[azure] UBUNTU: SAUCE: vmbus-rdma: add minor host OS version to modules
diff mbox

Message ID 1501003621-9478-1-git-send-email-marcelo.cerri@canonical.com
State New
Headers show

Commit Message

Marcelo Henrique Cerri July 25, 2017, 5:27 p.m. UTC
BugLink: http://bugs.launchpad.net/bugs/1701744

Azure host OS has major and minor version numbers. Rename the following
modules:

drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142/vmbus-rdma-142.ko
drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-144/vmbus-rdma-144.ko

To:

drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142.0/vmbus-rdma-142.0.ko
drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-144.0/vmbus-rdma-144.0.ko

Signed-off-by: Marcelo Henrique Cerri <marcelo.cerri@canonical.com>
---
 drivers/infiniband/hw/vmbus-rdma/Makefile          |    4 +-
 .../hw/vmbus-rdma/vmbus-rdma-142.0/COPYING         |  339 +++
 .../hw/vmbus-rdma/vmbus-rdma-142.0/Makefile        |    3 +
 .../hw/vmbus-rdma/vmbus-rdma-142.0/hvnd_addr.c     |  136 +
 .../hw/vmbus-rdma/vmbus-rdma-142.0/mx_abi.h        |  232 ++
 .../hw/vmbus-rdma/vmbus-rdma-142.0/provider.c      | 2961 +++++++++++++++++++
 .../hw/vmbus-rdma/vmbus-rdma-142.0/user.h          |  107 +
 .../hw/vmbus-rdma/vmbus-rdma-142.0/vmbus_rdma.c    | 3074 ++++++++++++++++++++
 .../hw/vmbus-rdma/vmbus-rdma-142.0/vmbus_rdma.h    | 2202 ++++++++++++++
 .../hw/vmbus-rdma/vmbus-rdma-142/COPYING           |  339 ---
 .../hw/vmbus-rdma/vmbus-rdma-142/Makefile          |    3 -
 .../hw/vmbus-rdma/vmbus-rdma-142/hvnd_addr.c       |  136 -
 .../hw/vmbus-rdma/vmbus-rdma-142/mx_abi.h          |  232 --
 .../hw/vmbus-rdma/vmbus-rdma-142/provider.c        | 2961 -------------------
 .../infiniband/hw/vmbus-rdma/vmbus-rdma-142/user.h |  107 -
 .../hw/vmbus-rdma/vmbus-rdma-142/vmbus_rdma.c      | 3074 --------------------
 .../hw/vmbus-rdma/vmbus-rdma-142/vmbus_rdma.h      | 2202 --------------
 .../hw/vmbus-rdma/vmbus-rdma-144.0/COPYING         |  339 +++
 .../hw/vmbus-rdma/vmbus-rdma-144.0/Makefile        |    3 +
 .../hw/vmbus-rdma/vmbus-rdma-144.0/hvnd_addr.c     |  136 +
 .../hw/vmbus-rdma/vmbus-rdma-144.0/mx_abi.h        |  232 ++
 .../hw/vmbus-rdma/vmbus-rdma-144.0/provider.c      | 2961 +++++++++++++++++++
 .../hw/vmbus-rdma/vmbus-rdma-144.0/user.h          |  107 +
 .../hw/vmbus-rdma/vmbus-rdma-144.0/vmbus_rdma.c    | 3074 ++++++++++++++++++++
 .../hw/vmbus-rdma/vmbus-rdma-144.0/vmbus_rdma.h    | 2202 ++++++++++++++
 .../hw/vmbus-rdma/vmbus-rdma-144/COPYING           |  339 ---
 .../hw/vmbus-rdma/vmbus-rdma-144/Makefile          |    3 -
 .../hw/vmbus-rdma/vmbus-rdma-144/hvnd_addr.c       |  136 -
 .../hw/vmbus-rdma/vmbus-rdma-144/mx_abi.h          |  232 --
 .../hw/vmbus-rdma/vmbus-rdma-144/provider.c        | 2961 -------------------
 .../infiniband/hw/vmbus-rdma/vmbus-rdma-144/user.h |  107 -
 .../hw/vmbus-rdma/vmbus-rdma-144/vmbus_rdma.c      | 3074 --------------------
 .../hw/vmbus-rdma/vmbus-rdma-144/vmbus_rdma.h      | 2202 --------------
 33 files changed, 18110 insertions(+), 18110 deletions(-)
 create mode 100644 drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142.0/COPYING
 create mode 100644 drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142.0/Makefile
 create mode 100644 drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142.0/hvnd_addr.c
 create mode 100644 drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142.0/mx_abi.h
 create mode 100644 drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142.0/provider.c
 create mode 100644 drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142.0/user.h
 create mode 100644 drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142.0/vmbus_rdma.c
 create mode 100644 drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142.0/vmbus_rdma.h
 delete mode 100644 drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142/COPYING
 delete mode 100644 drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142/Makefile
 delete mode 100644 drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142/hvnd_addr.c
 delete mode 100644 drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142/mx_abi.h
 delete mode 100644 drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142/provider.c
 delete mode 100644 drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142/user.h
 delete mode 100644 drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142/vmbus_rdma.c
 delete mode 100644 drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142/vmbus_rdma.h
 create mode 100644 drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-144.0/COPYING
 create mode 100644 drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-144.0/Makefile
 create mode 100644 drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-144.0/hvnd_addr.c
 create mode 100644 drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-144.0/mx_abi.h
 create mode 100644 drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-144.0/provider.c
 create mode 100644 drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-144.0/user.h
 create mode 100644 drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-144.0/vmbus_rdma.c
 create mode 100644 drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-144.0/vmbus_rdma.h
 delete mode 100644 drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-144/COPYING
 delete mode 100644 drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-144/Makefile
 delete mode 100644 drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-144/hvnd_addr.c
 delete mode 100644 drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-144/mx_abi.h
 delete mode 100644 drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-144/provider.c
 delete mode 100644 drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-144/user.h
 delete mode 100644 drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-144/vmbus_rdma.c
 delete mode 100644 drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-144/vmbus_rdma.h

Comments

Stefan Bader July 27, 2017, 2:42 p.m. UTC | #1
On 25.07.2017 19:27, Marcelo Henrique Cerri wrote:
> BugLink: http://bugs.launchpad.net/bugs/1701744
> 
> Azure host OS has major and minor version numbers. Rename the following
> modules:
> 
> drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142/vmbus-rdma-142.ko
> drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-144/vmbus-rdma-144.ko
> 
> To:
> 
> drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142.0/vmbus-rdma-142.0.ko
> drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-144.0/vmbus-rdma-144.0.ko
> 
> Signed-off-by: Marcelo Henrique Cerri <marcelo.cerri@canonical.com>
Acked-by: Stefan Bader <stefan.bader@canonical.com>

> ---
>  drivers/infiniband/hw/vmbus-rdma/Makefile          |    4 +-
>  .../hw/vmbus-rdma/vmbus-rdma-142.0/COPYING         |  339 +++
>  .../hw/vmbus-rdma/vmbus-rdma-142.0/Makefile        |    3 +
>  .../hw/vmbus-rdma/vmbus-rdma-142.0/hvnd_addr.c     |  136 +
>  .../hw/vmbus-rdma/vmbus-rdma-142.0/mx_abi.h        |  232 ++
>  .../hw/vmbus-rdma/vmbus-rdma-142.0/provider.c      | 2961 +++++++++++++++++++
>  .../hw/vmbus-rdma/vmbus-rdma-142.0/user.h          |  107 +
>  .../hw/vmbus-rdma/vmbus-rdma-142.0/vmbus_rdma.c    | 3074 ++++++++++++++++++++
>  .../hw/vmbus-rdma/vmbus-rdma-142.0/vmbus_rdma.h    | 2202 ++++++++++++++
>  .../hw/vmbus-rdma/vmbus-rdma-142/COPYING           |  339 ---
>  .../hw/vmbus-rdma/vmbus-rdma-142/Makefile          |    3 -
>  .../hw/vmbus-rdma/vmbus-rdma-142/hvnd_addr.c       |  136 -
>  .../hw/vmbus-rdma/vmbus-rdma-142/mx_abi.h          |  232 --
>  .../hw/vmbus-rdma/vmbus-rdma-142/provider.c        | 2961 -------------------
>  .../infiniband/hw/vmbus-rdma/vmbus-rdma-142/user.h |  107 -
>  .../hw/vmbus-rdma/vmbus-rdma-142/vmbus_rdma.c      | 3074 --------------------
>  .../hw/vmbus-rdma/vmbus-rdma-142/vmbus_rdma.h      | 2202 --------------
>  .../hw/vmbus-rdma/vmbus-rdma-144.0/COPYING         |  339 +++
>  .../hw/vmbus-rdma/vmbus-rdma-144.0/Makefile        |    3 +
>  .../hw/vmbus-rdma/vmbus-rdma-144.0/hvnd_addr.c     |  136 +
>  .../hw/vmbus-rdma/vmbus-rdma-144.0/mx_abi.h        |  232 ++
>  .../hw/vmbus-rdma/vmbus-rdma-144.0/provider.c      | 2961 +++++++++++++++++++
>  .../hw/vmbus-rdma/vmbus-rdma-144.0/user.h          |  107 +
>  .../hw/vmbus-rdma/vmbus-rdma-144.0/vmbus_rdma.c    | 3074 ++++++++++++++++++++
>  .../hw/vmbus-rdma/vmbus-rdma-144.0/vmbus_rdma.h    | 2202 ++++++++++++++
>  .../hw/vmbus-rdma/vmbus-rdma-144/COPYING           |  339 ---
>  .../hw/vmbus-rdma/vmbus-rdma-144/Makefile          |    3 -
>  .../hw/vmbus-rdma/vmbus-rdma-144/hvnd_addr.c       |  136 -
>  .../hw/vmbus-rdma/vmbus-rdma-144/mx_abi.h          |  232 --
>  .../hw/vmbus-rdma/vmbus-rdma-144/provider.c        | 2961 -------------------
>  .../infiniband/hw/vmbus-rdma/vmbus-rdma-144/user.h |  107 -
>  .../hw/vmbus-rdma/vmbus-rdma-144/vmbus_rdma.c      | 3074 --------------------
>  .../hw/vmbus-rdma/vmbus-rdma-144/vmbus_rdma.h      | 2202 --------------
>  33 files changed, 18110 insertions(+), 18110 deletions(-)
>  create mode 100644 drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142.0/COPYING
>  create mode 100644 drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142.0/Makefile
>  create mode 100644 drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142.0/hvnd_addr.c
>  create mode 100644 drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142.0/mx_abi.h
>  create mode 100644 drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142.0/provider.c
>  create mode 100644 drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142.0/user.h
>  create mode 100644 drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142.0/vmbus_rdma.c
>  create mode 100644 drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142.0/vmbus_rdma.h
>  delete mode 100644 drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142/COPYING
>  delete mode 100644 drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142/Makefile
>  delete mode 100644 drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142/hvnd_addr.c
>  delete mode 100644 drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142/mx_abi.h
>  delete mode 100644 drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142/provider.c
>  delete mode 100644 drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142/user.h
>  delete mode 100644 drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142/vmbus_rdma.c
>  delete mode 100644 drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142/vmbus_rdma.h
>  create mode 100644 drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-144.0/COPYING
>  create mode 100644 drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-144.0/Makefile
>  create mode 100644 drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-144.0/hvnd_addr.c
>  create mode 100644 drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-144.0/mx_abi.h
>  create mode 100644 drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-144.0/provider.c
>  create mode 100644 drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-144.0/user.h
>  create mode 100644 drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-144.0/vmbus_rdma.c
>  create mode 100644 drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-144.0/vmbus_rdma.h
>  delete mode 100644 drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-144/COPYING
>  delete mode 100644 drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-144/Makefile
>  delete mode 100644 drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-144/hvnd_addr.c
>  delete mode 100644 drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-144/mx_abi.h
>  delete mode 100644 drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-144/provider.c
>  delete mode 100644 drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-144/user.h
>  delete mode 100644 drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-144/vmbus_rdma.c
>  delete mode 100644 drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-144/vmbus_rdma.h
> 
> diff --git a/drivers/infiniband/hw/vmbus-rdma/Makefile b/drivers/infiniband/hw/vmbus-rdma/Makefile
> index b6e900002e2f..9a0cb3cff61b 100644
> --- a/drivers/infiniband/hw/vmbus-rdma/Makefile
> +++ b/drivers/infiniband/hw/vmbus-rdma/Makefile
> @@ -1,2 +1,2 @@
> -obj-$(CONFIG_HYPERV_INFINIBAND_ND)      += vmbus-rdma-142/
> -obj-$(CONFIG_HYPERV_INFINIBAND_ND)      += vmbus-rdma-144/
> +obj-$(CONFIG_HYPERV_INFINIBAND_ND)      += vmbus-rdma-142.0/
> +obj-$(CONFIG_HYPERV_INFINIBAND_ND)      += vmbus-rdma-144.0/
> diff --git a/drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142.0/COPYING b/drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142.0/COPYING
> new file mode 100644
> index 000000000000..f0960c946b07
> --- /dev/null
> +++ b/drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142.0/COPYING
> @@ -0,0 +1,339 @@
> +
> +"This software program is licensed subject to the GNU General Public License
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> +
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> +
> +   If distribution of executable or object code is made by offering access
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> +   the source code from the same place counts as distribution of the source
> +   code, even though third parties are not compelled to copy the source
> +   along with the object code.
> +
> +4. You may not copy, modify, sublicense, or distribute the Program except as
> +   expressly provided under this License. Any attempt otherwise to copy,
> +   modify, sublicense or distribute the Program is void, and will
> +   automatically terminate your rights under this License. However, parties
> +   who have received copies, or rights, from you under this License will not
> +   have their licenses terminated so long as such parties remain in full
> +   compliance.
> +
> +5. You are not required to accept this License, since you have not signed
> +   it. However, nothing else grants you permission to modify or distribute
> +   the Program or its derivative works. These actions are prohibited by law
> +   if you do not accept this License. Therefore, by modifying or
> +   distributing the Program (or any work based on the Program), you
> +   indicate your acceptance of this License to do so, and all its terms and
> +   conditions for copying, distributing or modifying the Program or works
> +   based on it.
> +
> +6. Each time you redistribute the Program (or any work based on the
> +   Program), the recipient automatically receives a license from the
> +   original licensor to copy, distribute or modify the Program subject to
> +   these terms and conditions. You may not impose any further restrictions
> +   on the recipients' exercise of the rights granted herein. You are not
> +   responsible for enforcing compliance by third parties to this License.
> +
> +7. If, as a consequence of a court judgment or allegation of patent
> +   infringement or for any other reason (not limited to patent issues),
> +   conditions are imposed on you (whether by court order, agreement or
> +   otherwise) that contradict the conditions of this License, they do not
> +   excuse you from the conditions of this License. If you cannot distribute
> +   so as to satisfy simultaneously your obligations under this License and
> +   any other pertinent obligations, then as a consequence you may not
> +   distribute the Program at all. For example, if a patent license would
> +   not permit royalty-free redistribution of the Program by all those who
> +   receive copies directly or indirectly through you, then the only way you
> +   could satisfy both it and this License would be to refrain entirely from
> +   distribution of the Program.
> +
> +   If any portion of this section is held invalid or unenforceable under any
> +   particular circumstance, the balance of the section is intended to apply
> +   and the section as a whole is intended to apply in other circumstances.
> +
> +   It is not the purpose of this section to induce you to infringe any
> +   patents or other property right claims or to contest validity of any
> +   such claims; this section has the sole purpose of protecting the
> +   integrity of the free software distribution system, which is implemented
> +   by public license practices. Many people have made generous contributions
> +   to the wide range of software distributed through that system in
> +   reliance on consistent application of that system; it is up to the
> +   author/donor to decide if he or she is willing to distribute software
> +   through any other system and a licensee cannot impose that choice.
> +
> +   This section is intended to make thoroughly clear what is believed to be
> +   a consequence of the rest of this License.
> +
> +8. If the distribution and/or use of the Program is restricted in certain
> +   countries either by patents or by copyrighted interfaces, the original
> +   copyright holder who places the Program under this License may add an
> +   explicit geographical distribution limitation excluding those countries,
> +   so that distribution is permitted only in or among countries not thus
> +   excluded. In such case, this License incorporates the limitation as if
> +   written in the body of this License.
> +
> +9. The Free Software Foundation may publish revised and/or new versions of
> +   the General Public License from time to time. Such new versions will be
> +   similar in spirit to the present version, but may differ in detail to
> +   address new problems or concerns.
> +
> +   Each version is given a distinguishing version number. If the Program
> +   specifies a version number of this License which applies to it and "any
> +   later version", you have the option of following the terms and
> +   conditions either of that version or of any later version published by
> +   the Free Software Foundation. If the Program does not specify a version
> +   number of this License, you may choose any version ever published by the
> +   Free Software Foundation.
> +
> +10. If you wish to incorporate parts of the Program into other free programs
> +    whose distribution conditions are different, write to the author to ask
> +    for permission. For software which is copyrighted by the Free Software
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> +    exceptions for this. Our decision will be guided by the two goals of
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> +    of promoting the sharing and reuse of software generally.
> +
> +   NO WARRANTY
> +
> +11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
> +    FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
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> +    ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH
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> +    NECESSARY SERVICING, REPAIR OR CORRECTION.
> +
> +12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
> +    WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
> +    REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR
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> +    (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED
> +    INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF
> +    THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR
> +    OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
> +
> +END OF TERMS AND CONDITIONS
> +
> +How to Apply These Terms to Your New Programs
> +
> +If you develop a new program, and you want it to be of the greatest
> +possible use to the public, the best way to achieve this is to make it free
> +software which everyone can redistribute and change under these terms.
> +
> +To do so, attach the following notices to the program. It is safest to
> +attach them to the start of each source file to most effectively convey the
> +exclusion of warranty; and each file should have at least the "copyright"
> +line and a pointer to where the full notice is found.
> +
> +one line to give the program's name and an idea of what it does.
> +Copyright (C) yyyy  name of author
> +
> +This program is free software; you can redistribute it and/or modify it
> +under the terms of the GNU General Public License as published by the Free
> +Software Foundation; either version 2 of the License, or (at your option)
> +any later version.
> +
> +This program is distributed in the hope that it will be useful, but WITHOUT
> +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
> +FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
> +more details.
> +
> +You should have received a copy of the GNU General Public License along with
> +this program; if not, write to the Free Software Foundation, Inc., 59
> +Temple Place - Suite 330, Boston, MA  02111-1307, USA.
> +
> +Also add information on how to contact you by electronic and paper mail.
> +
> +If the program is interactive, make it output a short notice like this when
> +it starts in an interactive mode:
> +
> +Gnomovision version 69, Copyright (C) year name of author Gnomovision comes
> +with ABSOLUTELY NO WARRANTY; for details type 'show w'.  This is free
> +software, and you are welcome to redistribute it under certain conditions;
> +type 'show c' for details.
> +
> +The hypothetical commands 'show w' and 'show c' should show the appropriate
> +parts of the General Public License. Of course, the commands you use may be
> +called something other than 'show w' and 'show c'; they could even be
> +mouse-clicks or menu items--whatever suits your program.
> +
> +You should also get your employer (if you work as a programmer) or your
> +school, if any, to sign a "copyright disclaimer" for the program, if
> +necessary. Here is a sample; alter the names:
> +
> +Yoyodyne, Inc., hereby disclaims all copyright interest in the program
> +'Gnomovision' (which makes passes at compilers) written by James Hacker.
> +
> +signature of Ty Coon, 1 April 1989
> +Ty Coon, President of Vice
> +
> +This General Public License does not permit incorporating your program into
> +proprietary programs. If your program is a subroutine library, you may
> +consider it more useful to permit linking proprietary applications with the
> +library. If this is what you want to do, use the GNU Library General Public
> +License instead of this License.
> diff --git a/drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142.0/Makefile b/drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142.0/Makefile
> new file mode 100644
> index 000000000000..8fc23718bcf1
> --- /dev/null
> +++ b/drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142.0/Makefile
> @@ -0,0 +1,3 @@
> +obj-$(CONFIG_HYPERV_INFINIBAND_ND)	+= hv_network_direct_142.0.o
> +
> +hv_network_direct_142.0-y := provider.o vmbus_rdma.o hvnd_addr.o
> diff --git a/drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142.0/hvnd_addr.c b/drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142.0/hvnd_addr.c
> new file mode 100644
> index 000000000000..c8c2295b63af
> --- /dev/null
> +++ b/drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142.0/hvnd_addr.c
> @@ -0,0 +1,136 @@
> +/*
> + * Copyright (c) 2014, Microsoft Corporation.
> + *
> + * Author:
> + *   K. Y. Srinivasan <kys@microsoft.com>
> + *
> + * This program is free software; you can redistribute it and/or modify it
> + * under the terms of the GNU General Public License version 2 as published
> + * by the Free Software Foundation.
> + *
> + * This program is distributed in the hope that it will be useful, but
> + * WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
> + * NON INFRINGEMENT.  See the GNU General Public License for more
> + * details.
> + *
> + * Bug fixes/enhancements: Long Li <longli@microsoft.com>
> + */
> +
> +#include <linux/completion.h>
> +#include <linux/module.h>
> +#include <linux/errno.h>
> +#include <linux/hyperv.h>
> +#include <linux/efi.h>
> +#include <linux/slab.h>
> +#include <linux/cred.h>
> +#include <linux/sched.h>
> +#include <linux/types.h>
> +#include <linux/completion.h>
> +#include <linux/scatterlist.h>
> +#include <rdma/ib_umem.h>
> +#include <rdma/ib_addr.h>
> +
> +#include "vmbus_rdma.h"
> +
> +
> +#include <linux/semaphore.h>
> +#include <linux/fs.h>
> +#include <linux/nls.h>
> +#include <linux/workqueue.h>
> +#include <linux/cdev.h>
> +#include <linux/hyperv.h>
> +#include <linux/sched.h>
> +#include <linux/uaccess.h>
> +#include <linux/miscdevice.h>
> +#include <linux/hyperv.h>
> +
> +
> +int hvnd_get_outgoing_rdma_addr(struct hvnd_dev *nd_dev,
> +				struct hvnd_ucontext *uctx,
> +				union nd_sockaddr_inet *og_addr)
> +{
> +	int ret;
> +	/*
> +	 * Query the host and select the first address.
> +	 */
> +	struct pkt_query_addr_list pkt;
> +
> +	// KYS try to avoid having to zero everything
> +	memset(&pkt, 0, sizeof(pkt));
> +
> +	hvnd_init_hdr(&pkt.hdr,
> +		      (sizeof(pkt) -
> +		      sizeof(struct ndv_packet_hdr_control_1)),
> +		      uctx->create_pkt.handle.local,
> +		      uctx->create_pkt.handle.remote,
> +		      IOCTL_ND_ADAPTER_QUERY_ADDRESS_LIST, 0, 0, 0);
> +
> +	pkt.ioctl.in.version = ND_VERSION_1;
> +	pkt.ioctl.in.reserved = 0;
> +	pkt.ioctl.in.handle = uctx->adaptor_hdl;
> +
> +	ret = hvnd_send_ioctl_pkt(nd_dev, &pkt.hdr,
> +				  sizeof(pkt), (u64)&pkt);
> +
> +	if (ret)
> +		return ret;
> +
> +	/*
> +	 * Copy the address out.
> +	 */
> +
> +	memcpy(og_addr, &pkt.ioctl.out[0], sizeof(*og_addr));
> +	return 0;
> +
> +}
> +
> +static struct rdma_addr_client self;
> +
> +struct resolve_cb_context {
> +	struct rdma_dev_addr *addr;
> +	struct completion comp;
> +};
> +
> +void hvnd_addr_init(void)
> +{
> +	rdma_addr_register_client(&self);
> +}
> +
> +void hvnd_addr_deinit(void)
> +{
> +	rdma_addr_unregister_client(&self);
> +}
> +
> +static void resolve_cb(int status, struct sockaddr *src_addr,
> +	     struct rdma_dev_addr *addr, void *context)
> +{
> +	memcpy(((struct resolve_cb_context *)context)->addr, addr, sizeof(struct
> +				rdma_dev_addr));
> +	complete(&((struct resolve_cb_context *)context)->comp);
> +}
> +
> +int hvnd_get_neigh_mac_addr(struct sockaddr *local, struct sockaddr *remote,
> +			    char *mac_addr)
> +{
> +	struct rdma_dev_addr dev_addr;
> +	struct resolve_cb_context ctx;
> +	int ret;
> +
> +	memset(&dev_addr, 0, sizeof(dev_addr));
> +	dev_addr.net = &init_net;
> +	ctx.addr = &dev_addr;
> +	init_completion(&ctx.comp);
> +
> +	ret = rdma_resolve_ip(&self, local, remote, &dev_addr, 1000,
> +			      resolve_cb, &ctx);
> +
> +	if (ret) {
> +		hvnd_error("rdma_resolve_ip failed ret=%d\n", ret);
> +		return ret;
> +	}
> +
> +	wait_for_completion(&ctx.comp);
> +	memcpy(mac_addr, dev_addr.dst_dev_addr, ETH_ALEN);
> +	return ret;
> +}
> diff --git a/drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142.0/mx_abi.h b/drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142.0/mx_abi.h
> new file mode 100644
> index 000000000000..8f55cb408de0
> --- /dev/null
> +++ b/drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142.0/mx_abi.h
> @@ -0,0 +1,232 @@
> +/*
> + * Copyright (c) 2005 Topspin Communications.  All rights reserved.
> + * Copyright (c) 2005 Cisco Systems.  All rights reserved.
> + * Copyright (c) 2005 PathScale, Inc.  All rights reserved.
> + *
> + * This software is available to you under a choice of one of two
> + * licenses.  You may choose to be licensed under the terms of the GNU
> + * General Public License (GPL) Version 2, available from the file
> + * COPYING in the main directory of this source tree, or the
> + * OpenIB.org BSD license below:
> + *
> + *     Redistribution and use in source and binary forms, with or
> + *     without modification, are permitted provided that the following
> + *     conditions are met:
> + *
> + *      - Redistributions of source code must retain the above
> + *        copyright notice, this list of conditions and the following
> + *        disclaimer.
> + *
> + *      - Redistributions in binary form must reproduce the above
> + *        copyright notice, this list of conditions and the following
> + *        disclaimer in the documentation and/or other materials
> + *        provided with the distribution.
> + *
> + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
> + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
> + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
> + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
> + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
> + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
> + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
> + * SOFTWARE.
> + *
> + * KYS: made some modifications.
> + */
> +
> +#ifndef MX_ABI_H
> +#define MX_ABI_H
> +
> +
> +
> +/*
> + * Make sure that all structs defined in this file remain laid out so
> + * that they pack the same way on 32-bit and 64-bit architectures (to
> + * avoid incompatibility between 32-bit userspace and 64-bit kernels).
> + * Specifically:
> + *  - Do not use pointer types -- pass pointers in UINT64 instead.
> + *  - Make sure that any structure larger than 4 bytes is padded to a
> + *    multiple of 8 bytes.  Otherwise the structure size will be
> + *    different between 32-bit and 64-bit architectures.
> + */
> +
> +enum ibv_get_context_mappings {
> +	IBV_GET_CONTEXT_UAR,
> +	IBV_GET_CONTEXT_BF,
> +	IBV_GET_CONTEXT_MAPPING_MAX
> +};
> +
> +struct ibv_get_context_req {
> +
> +	union nd_mapping mappings[IBV_GET_CONTEXT_MAPPING_MAX];
> +};
> +
> +struct ibv_get_context_resp {
> +
> +	// mmap UAR and BF
> +	struct nd_mapping_result  mapping_results[IBV_GET_CONTEXT_MAPPING_MAX];
> +
> +	// mmap Blue Flame
> +	int bf_buf_size;
> +	int bf_offset;
> +
> +	// mlx4_query_device result
> +	int max_qp_wr;
> +	int max_sge;
> +	int max_cqe;
> +
> +	// general parameters
> +	u32 cqe_size;
> +	u32 vend_id;
> +	u16 dev_id;
> +	u16 bf_reg_size;
> +	u16 bf_regs_per_page;
> +	u16 reserved1;
> +
> +	// ibv_cmd_get_context result
> +	u32 qp_tab_size;
> +
> +	u32 reserved2;
> +};
> +
> +struct ibv_alloc_pd_resp {
> +	u64 pd_handle;
> +	u32 pdn;
> +	u32 reserved;
> +};
> +
> +struct ibv_reg_mr {
> +	u64 start;
> +	u64 length;
> +	u64 hca_va;
> +	u32 access_flags;
> +	u32 pdn;
> +	u64 pd_handle;
> +};
> +
> +struct ibv_reg_mr_resp {
> +	u64 mr_handle;
> +	u32 lkey;
> +	u32 rkey;
> +};
> +
> +
> +enum mlx4_ib_create_cq_mapping {
> +	MLX4_IB_CREATE_CQ_BUF,
> +	MLX4_IB_CREATE_CQ_DB,
> +	MLX4_IB_CREATE_CQ_ARM_SN,   // Windows specific
> +	MLX4_IB_CREATE_CQ_MAPPING_MAX
> +};
> +
> +#define MLX4_CQ_FLAGS_ARM_IN_KERNEL     1
> +
> +struct ibv_create_cq {
> +	union nd_mapping mappings[MLX4_IB_CREATE_CQ_MAPPING_MAX];
> +	u32  flags;
> +};
> +
> +struct ibv_create_cq_resp {
> +	struct nd_mapping_result mapping_results[MLX4_IB_CREATE_CQ_MAPPING_MAX];
> +	u32  cqn;
> +	u32  cqe;
> +};
> +
> +enum mlx4_ib_create_srq_mappings {
> +	MLX4_IB_CREATE_SRQ_BUF,
> +	MLX4_IB_CREATE_SRQ_DB,
> +	MLX4_IB_CREATE_SRQ_MAPPINGS_MAX
> +};
> +
> +struct ibv_create_srq {
> +	union nd_mapping mappings[MLX4_IB_CREATE_SRQ_MAPPINGS_MAX];
> +};
> +
> +struct ibv_create_srq_resp {
> +	struct nd_mapping_result mapping_results[MLX4_IB_CREATE_SRQ_MAPPINGS_MAX];
> +};
> +
> +enum mlx4_ib_create_qp_mappings {
> +	MLX4_IB_CREATE_QP_BUF,
> +	MLX4_IB_CREATE_QP_DB,
> +	MLX4_IB_CREATE_QP_MAPPINGS_MAX
> +};
> +
> +struct ibv_create_qp {
> +	union nd_mapping mappings[MLX4_IB_CREATE_QP_MAPPINGS_MAX];
> +	u8	log_sq_bb_count;
> +	u8	log_sq_stride;
> +	u8	sq_no_prefetch;
> +	u8	reserved;
> +};
> +
> +struct ibv_create_qp_resp {
> +	struct nd_mapping_result mapping_results[MLX4_IB_CREATE_QP_MAPPINGS_MAX];
> +	// struct ib_uverbs_create_qp_resp
> +	u64 qp_handle;
> +	u32 qpn;
> +	u32 max_send_wr;
> +	u32 max_recv_wr;
> +	u32 max_send_sge;
> +	u32 max_recv_sge;
> +	u32 max_inline_data;
> +};
> +
> +enum ibv_qp_attr_mask {
> +	IBV_QP_STATE			= 1 << 0,
> +	IBV_QP_CUR_STATE		= 1 << 1,
> +	IBV_QP_EN_SQD_ASYNC_NOTIFY	= 1 << 2,
> +	IBV_QP_ACCESS_FLAGS		= 1 << 3,
> +	IBV_QP_PKEY_INDEX		= 1 << 4,
> +	IBV_QP_PORT			= 1 << 5,
> +	IBV_QP_QKEY			= 1 << 6,
> +	IBV_QP_AV			= 1 << 7,
> +	IBV_QP_PATH_MTU			= 1 << 8,
> +	IBV_QP_TIMEOUT			= 1 << 9,
> +	IBV_QP_RETRY_CNT		= 1 << 10,
> +	IBV_QP_RNR_RETRY		= 1 << 11,
> +	IBV_QP_RQ_PSN			= 1 << 12,
> +	IBV_QP_MAX_QP_RD_ATOMIC		= 1 << 13,
> +	IBV_QP_ALT_PATH			= 1 << 14,
> +	IBV_QP_MIN_RNR_TIMER		= 1 << 15,
> +	IBV_QP_SQ_PSN			= 1 << 16,
> +	IBV_QP_MAX_DEST_RD_ATOMIC	= 1 << 17,
> +	IBV_QP_PATH_MIG_STATE		= 1 << 18,
> +	IBV_QP_CAP			= 1 << 19,
> +	IBV_QP_DEST_QPN			= 1 << 20
> +};
> +
> +enum ibv_qp_state {
> +	IBV_QPS_RESET,
> +	IBV_QPS_INIT,
> +	IBV_QPS_RTR,
> +	IBV_QPS_RTS,
> +	IBV_QPS_SQD,
> +	IBV_QPS_SQE,
> +	IBV_QPS_ERR
> +};
> +
> +
> +struct ibv_modify_qp_resp {
> +	enum ibv_qp_attr_mask attr_mask;
> +	u8 qp_state;
> +	u8 reserved[3];
> +};
> +
> +struct ibv_create_ah_resp {
> +	u64 start;
> +};
> +
> +/*
> + * Some mlx4 specific kernel definitions. Perhaps could be in
> + * separate file.
> + */
> +
> +struct mlx4_ib_user_db_page {
> +	struct list_head        list;
> +	struct ib_umem         *umem;
> +	unsigned long           user_virt;
> +	int                     refcnt;
> +};
> +
> +
> +#endif /* MX_ABI_H */
> diff --git a/drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142.0/provider.c b/drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142.0/provider.c
> new file mode 100644
> index 000000000000..7115cf769fe0
> --- /dev/null
> +++ b/drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142.0/provider.c
> @@ -0,0 +1,2961 @@
> +/*
> + * Copyright (c) 2014, Microsoft Corporation.
> + *
> + * Author:
> + *   K. Y. Srinivasan <kys@microsoft.com>
> + *
> + * This program is free software; you can redistribute it and/or modify it
> + * under the terms of the GNU General Public License version 2 as published
> + * by the Free Software Foundation.
> + *
> + * This program is distributed in the hope that it will be useful, but
> + * WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
> + * NON INFRINGEMENT.  See the GNU General Public License for more
> + * details.
> + *
> + * Bug fixes/enhancements: Long Li <longli@microsoft.com>
> + */
> +
> +#include <linux/module.h>
> +#include <linux/moduleparam.h>
> +#include <linux/device.h>
> +#include <linux/netdevice.h>
> +#include <linux/etherdevice.h>
> +#include <linux/delay.h>
> +#include <linux/errno.h>
> +#include <linux/list.h>
> +#include <linux/spinlock.h>
> +#include <linux/ethtool.h>
> +#include <linux/rtnetlink.h>
> +#include <linux/inetdevice.h>
> +#include <linux/io.h>
> +#include <linux/hyperv.h>
> +#include <linux/completion.h>
> +#include <rdma/iw_cm.h>
> +#include <rdma/ib_verbs.h>
> +#include <rdma/ib_smi.h>
> +#include <rdma/ib_umem.h>
> +#include <rdma/ib_user_verbs.h>
> +#include <rdma/rdma_cm.h>
> +#include <linux/proc_fs.h>
> +#include <linux/seq_file.h>
> +#include "vmbus_rdma.h"
> +
> +/*
> + * We are emulating mlx4. XXXKYS: May have to FIX.
> + */
> +#include "./user.h"
> +
> +static struct hvnd_dev *g_nd_dev; // the one and only one
> +
> +int hvnd_log_level = HVND_ERROR;
> +module_param(hvnd_log_level, int, 0644);
> +MODULE_PARM_DESC(hvnd_log_level,
> +	"Logging level, 0 - Error (default), 1 - Warning, 2 - Info, 3 - Debug.");
> +
> +static int disable_cq_notify = 1;
> +//static int disable_cq_notify = 0;
> +module_param(disable_cq_notify, int, 0644);
> +MODULE_PARM_DESC(disable_cq_notify,
> +	"Disable CQ notification, 0 - Enable, 1 - Disable (default).");
> +
> +enum {
> +	MLX4_USER_DEV_CAP_64B_CQE = 1L << 0
> +};
> +
> +#define HVND_NODE_DESC "vmbus-RDMA"
> +
> +#undef MLX4_IB_UVERBS_ABI_VERSION
> +#define MLX4_IB_UVERBS_ABI_VERSION             4
> +
> +struct mlx4_wqe_data_seg {
> +	__be32                  byte_count;
> +	__be32                  lkey;
> +	__be64                  addr;
> +};
> +
> +/* return value:
> + * true: ep is running
> + * false: ep is stopped
> + */
> +bool ep_add_work_pending(struct hvnd_ep_obj *ep_object)
> +{
> +	bool ret = true;
> +
> +	atomic_inc(&ep_object->nr_requests_pending);
> +	if (ep_object->stopping) {
> +		if (atomic_dec_and_test(&ep_object->nr_requests_pending))
> +			wake_up(&ep_object->wait_pending);
> +		ret = false;
> +	}
> +	return ret;
> +}
> +
> +void ep_del_work_pending(struct hvnd_ep_obj *ep_object)
> +{
> +	if (atomic_dec_and_test(&ep_object->nr_requests_pending))
> +		wake_up(&ep_object->wait_pending);
> +
> +	if (atomic_read(&ep_object->nr_requests_pending) < 0) {
> +		hvnd_error("ep_object->nr_requests_pending=%d type=%d cm_state=%d\n",
> +			   atomic_read(&ep_object->nr_requests_pending),
> +			   ep_object->type, ep_object->cm_state);
> +		dump_stack();
> +	}
> +}
> +
> +void ep_stop(struct hvnd_ep_obj *ep_object)
> +{
> +	if (!ep_object->stopping) {
> +		ep_object->stopping = true;
> +		hvnd_cancel_io(ep_object);
> +	}
> +
> +	if (atomic_read(&ep_object->nr_requests_pending) < 0) {
> +		hvnd_error("IO canceled, ep_object->nr_requests_pending=%d type=%d cm_state=%d\n",
> +			   atomic_read(&ep_object->nr_requests_pending),
> +			   ep_object->type, ep_object->cm_state);
> +		dump_stack();
> +	}
> +
> +	wait_event(ep_object->wait_pending,
> +		   !atomic_read(&ep_object->nr_requests_pending));
> +}
> +
> +static int vmbus_dma_map_sg(struct device *dev, struct scatterlist *sgl,
> +		int nents, enum dma_data_direction direction,
> +		unsigned long attrs)
> +{
> +	struct scatterlist *sg;
> +	u64 addr;
> +	int i;
> +	int ret = nents;
> +
> +	BUG_ON(!valid_dma_direction(direction));
> +
> +	for_each_sg(sgl, sg, nents, i) {
> +		addr = (u64) page_address(sg_page(sg));
> +		/* TODO: handle highmem pages */
> +		if (!addr) {
> +			ret = 0;
> +			break;
> +		}
> +		sg->dma_address = addr + sg->offset;
> +		sg->dma_length = sg->length;
> +	}
> +	return ret;
> +}
> +
> +static void vmbus_dma_unmap_sg(struct device *dev,
> +			 struct scatterlist *sg, int nents,
> +			 enum dma_data_direction direction, unsigned long attrs)
> +{
> +	BUG_ON(!valid_dma_direction(direction));
> +}
> +
> +
> +const struct dma_map_ops vmbus_dma_ops = {
> +	.map_sg = vmbus_dma_map_sg,
> +	.unmap_sg = vmbus_dma_unmap_sg,
> +};
> +
> +static int hvnd_get_incoming_connections(struct hvnd_ep_obj *listener,
> +					 struct hvnd_dev *nd_dev,
> +					 struct hvnd_ucontext *uctx);
> +
> +static struct hvnd_ep_obj *hvnd_setup_ep(struct iw_cm_id *cm_id, int ep_type,
> +					struct hvnd_dev *nd_dev,
> +					struct hvnd_ucontext *uctx);
> +
> +static void hvnd_deinit_ep(struct hvnd_ep_obj *ep)
> +{
> +	put_irp_handle(ep->nd_dev, ep->local_irp);
> +}
> +
> +static void hvnd_destroy_ep(struct hvnd_ep_obj *ep)
> +{
> +	hvnd_debug("canceling work for ep %p\n", ep);
> +	cancel_work_sync(&ep->wrk.work);
> +	hvnd_deinit_ep(ep);
> +	kfree(ep);
> +}
> +
> +
> +#define	UC(b)	(((int)b)&0xff)
> +char *debug_inet_ntoa(struct in_addr in, char *b)
> +{
> +	register char *p;
> +
> +	p = (char *)&in;
> +	(void)snprintf(b, 20,
> +	    "%d.%d.%d.%d", UC(p[0]), UC(p[1]), UC(p[2]), UC(p[3]));
> +	return b;
> +}
> +
> +void hvnd_process_events(struct work_struct *work);
> +
> +static int hvnd_init_ep(struct hvnd_ep_obj *ep_object,
> +			 struct iw_cm_id *cm_id, int ep_type,
> +			 struct hvnd_dev *nd_dev,
> +			 struct hvnd_ucontext *uctx)
> +{
> +	int ret;
> +
> +	ep_object->type = ep_type;
> +	ep_object->cm_id = cm_id;
> +	ep_object->nd_dev = nd_dev;
> +	ep_object->uctx = uctx;
> +
> +	ep_object->parent = NULL;
> +
> +	ep_object->wrk.callback_arg = ep_object;
> +	INIT_WORK(&ep_object->wrk.work, hvnd_process_events);
> +	INIT_LIST_HEAD(&ep_object->incoming_pkt_list);
> +	spin_lock_init(&ep_object->incoming_pkt_list_lock);
> +
> +	ep_object->stopping = false;
> +	atomic_set(&ep_object->nr_requests_pending, 0);
> +	init_waitqueue_head(&ep_object->wait_pending);
> +
> +	ret = get_irp_handle(nd_dev, &ep_object->local_irp, (void *)ep_object);
> +
> +	if (ret) {
> +		hvnd_error("get_irp_handle() failed: err: %d\n", ret);
> +		return ret;
> +	}
> +	return 0;
> +
> +}
> +
> +static int set_rq_size(struct hvnd_dev *dev, struct ib_qp_cap *cap,
> +			struct hvnd_qp *qp)
> +{
> +
> +	/* HW requires >= 1 RQ entry with >= 1 gather entry */
> +	if (!cap->max_recv_wr || !cap->max_recv_sge)
> +		return -EINVAL;
> +
> +	qp->rq_wqe_cnt   = roundup_pow_of_two(max(1U, cap->max_recv_wr));
> +	qp->rq_max_gs    = roundup_pow_of_two(max(1U, cap->max_recv_sge));
> +	qp->rq_wqe_shift = ilog2(
> +		qp->rq_max_gs * sizeof(struct mlx4_wqe_data_seg));
> +
> +
> +	return 0;
> +}
> +
> +static int set_user_sq_size(struct hvnd_dev *dev,
> +			    struct hvnd_qp *qp,
> +			    struct mlx4_ib_create_qp *ucmd)
> +{
> +	qp->sq_wqe_cnt   = 1 << ucmd->log_sq_bb_count;
> +	qp->sq_wqe_shift = ucmd->log_sq_stride;
> +
> +	qp->buf_size = (qp->rq_wqe_cnt << qp->rq_wqe_shift) +
> +			(qp->sq_wqe_cnt << qp->sq_wqe_shift);
> +
> +	return 0;
> +}
> +
> +static int hvnd_db_map_user(struct hvnd_ucontext *uctx, unsigned long virt,
> +				struct ib_umem **db_umem)
> +{
> +	struct mlx4_ib_user_db_page *page;
> +	int err = 0;
> +
> +	mutex_lock(&uctx->db_page_mutex);
> +
> +	list_for_each_entry(page, &uctx->db_page_list, list)
> +		if (page->user_virt == (virt & PAGE_MASK))
> +			goto found;
> +
> +	page = kmalloc(sizeof(*page), GFP_KERNEL);
> +	if (!page) {
> +		err = -ENOMEM;
> +		goto out;
> +	}
> +
> +	page->user_virt = (virt & PAGE_MASK);
> +	page->refcnt    = 0;
> +	page->umem      = ib_umem_get(&uctx->ibucontext, virt & PAGE_MASK,
> +				      PAGE_SIZE, 0, 0);
> +	if (IS_ERR(page->umem)) {
> +		hvnd_error("ib_umem_get failure\n");
> +		err = PTR_ERR(page->umem);
> +		kfree(page);
> +		goto out;
> +	}
> +
> +	list_add(&page->list, &uctx->db_page_list);
> +
> +found:
> +	++page->refcnt;
> +out:
> +	mutex_unlock(&uctx->db_page_mutex);
> +	if (!err)
> +		*db_umem = page->umem;
> +
> +	return err;
> +}
> +
> +static void hvnd_db_unmap_user(struct hvnd_ucontext *uctx, u64 db_addr)
> +{
> +	struct mlx4_ib_user_db_page *page;
> +
> +	mutex_lock(&uctx->db_page_mutex);
> +	list_for_each_entry(page, &uctx->db_page_list, list)
> +		if (page->user_virt == (db_addr & PAGE_MASK))
> +			goto found;
> +
> +found:
> +	if (!--page->refcnt) {
> +		list_del(&page->list);
> +		ib_umem_release(page->umem);
> +		kfree(page);
> +	}
> +
> +	mutex_unlock(&uctx->db_page_mutex);
> +}
> +
> +
> +static void debug_check(const char *func, int line)
> +{
> +	hvnd_debug("func is: %s; line is %d\n", func, line);
> +
> +	if (in_interrupt()) {
> +		hvnd_error("In interrupt func is: %s; line is %d\n",
> +			   func, line);
> +		return;
> +	}
> +}
> +
> +static struct ib_ah *hvnd_ah_create(struct ib_pd *pd,
> +				    struct ib_ah_attr *ah_attr,
> +				    struct ib_udata *udata)
> +{
> +	debug_check(__func__, __LINE__);
> +	return ERR_PTR(-ENOSYS);
> +}
> +
> +static int hvnd_ah_destroy(struct ib_ah *ah)
> +{
> +	debug_check(__func__, __LINE__);
> +	return -ENOSYS;
> +}
> +
> +static int hvnd_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
> +{
> +	debug_check(__func__, __LINE__);
> +	return -ENOSYS;
> +}
> +
> +static int hvnd_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
> +{
> +	debug_check(__func__, __LINE__);
> +	return -ENOSYS;
> +}
> +
> +static int hvnd_process_mad(struct ib_device *ibdev,
> +			    int mad_flags,
> +			    u8 port_num,
> +			    const struct ib_wc *in_wc,
> +			    const struct ib_grh *in_grh,
> +			    const struct ib_mad_hdr *in_mad,
> +			    size_t in_mad_size,
> +			    struct ib_mad_hdr *out_mad,
> +			    size_t *out_mad_size,
> +			    u16 *out_mad_pkey_index)
> +{
> +	debug_check(__func__, __LINE__);
> +	return -ENOSYS;
> +}
> +
> +void hvnd_acquire_uctx_ref(struct hvnd_ucontext *uctx)
> +{
> +	atomic_inc(&uctx->refcnt);
> +}
> +
> +void hvnd_drop_uctx_ref(struct hvnd_dev *nd_dev,
> +			struct hvnd_ucontext *uctx)
> +{
> +	if (atomic_dec_and_test(&uctx->refcnt)) {
> +		hvnd_debug("uctx ref cnt dropped it is %d\n",
> +			   atomic_read(&uctx->refcnt));
> +		hvnd_debug("About to close adaptor\n");
> +		hvnd_close_adaptor(nd_dev, uctx);
> +	} else
> +		hvnd_debug("uctx ref cnt dropped it is %d\n",
> +			   atomic_read(&uctx->refcnt));
> +}
> +
> +
> +static int hvnd_dealloc_ucontext(struct ib_ucontext *context)
> +{
> +	struct hvnd_dev *nd_dev;
> +	struct hvnd_ucontext *uctx;
> +
> +	uctx = to_nd_context(context);
> +	nd_dev = to_nd_dev(context->device);
> +
> +	hvnd_debug("calling %s\n", __func__);
> +
> +	hvnd_drop_uctx_ref(nd_dev, uctx);
> +
> +	return 0;
> +}
> +
> +static struct ib_ucontext *hvnd_alloc_ucontext(struct ib_device *ibdev,
> +					       struct ib_udata *udata)
> +{
> +	struct hvnd_dev *nd_dev = to_nd_dev(ibdev);
> +	struct hvnd_ucontext *uctx;
> +	struct mlx4_ib_alloc_ucontext_resp resp;
> +	struct ibv_get_context_resp *ctx_output;
> +	int ret;
> +
> +	if (!nd_dev->ib_active) {
> +		hvnd_error("ib device is not active, try again\n");
> +		return ERR_PTR(-EAGAIN);
> +	}
> +
> +	uctx = get_uctx(nd_dev, current_pid());
> +	if (uctx) {
> +		// it is already opened, just increase its reference count
> +		hvnd_acquire_uctx_ref(uctx);
> +	} else {
> +
> +		/*
> +		 * The Windows host expects the following to be done:
> +		 * 1. Successfully send struct ndv_pkt_hdr_create_1
> +		 * 2. INIT PROVIDER
> +		 * 3. Open Adapter
> +		 * Before we can complete this call.
> +		 */
> +
> +		uctx = kzalloc(sizeof(struct hvnd_ucontext), GFP_KERNEL);
> +		if (!uctx)
> +			return ERR_PTR(-ENOMEM);
> +
> +		atomic_set(&uctx->refcnt, 1);
> +		INIT_LIST_HEAD(&uctx->db_page_list);
> +		mutex_init(&uctx->db_page_mutex);
> +
> +		/*
> +		 * Stash away the context with the calling PID.
> +		 */
> +		ret = insert_handle(nd_dev, &nd_dev->uctxidr, uctx,
> +				    current_pid());
> +		if (ret) {
> +			hvnd_error("Uctx ID insertion failed; ret is %d\n",
> +				   ret);
> +			goto err1;
> +		}
> +
> +		hvnd_debug("Opening adaptor pid is %d\n", current_pid());
> +
> +		ret = hvnd_open_adaptor(nd_dev, uctx);
> +		if (ret) {
> +			hvnd_error("hvnd_open_adaptor failed ret=%d\n", ret);
> +			goto err1;
> +		}
> +
> +	}
> +
> +	/*
> +	 * Copy the response out.
> +	 */
> +	ctx_output = &uctx->o_adap_pkt.mappings.ctx_output;
> +	resp.dev_caps         =	MLX4_USER_DEV_CAP_64B_CQE;
> +	resp.qp_tab_size      = ctx_output->qp_tab_size;
> +	resp.bf_reg_size      = ctx_output->bf_reg_size;
> +	resp.bf_regs_per_page =	ctx_output->bf_regs_per_page;
> +	resp.cqe_size         =	ctx_output->cqe_size;
> +
> +	ret = ib_copy_to_udata(udata, &resp, sizeof(resp));
> +	if (ret) {
> +		hvnd_error("ib_copy_to_udata failed ret=%d\n", ret);
> +		goto err1;
> +	}
> +
> +	return &uctx->ibucontext;
> +
> +err1:
> +	kfree(uctx);
> +	return ERR_PTR(ret);
> +}
> +
> +static int hvnd_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
> +{
> +	struct hvnd_ucontext *uctx = to_nd_context(context);
> +
> +	if (vma->vm_end - vma->vm_start != PAGE_SIZE) {
> +		hvnd_error("vma not a page size, actual size=%lu\n",
> +			   vma->vm_end - vma->vm_start);
> +		return -EINVAL;
> +	}
> +
> +	if (vma->vm_pgoff == 0) {
> +		vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
> +
> +		if (io_remap_pfn_range(vma, vma->vm_start,
> +					(uctx->uar_base >> PAGE_SHIFT),
> +					PAGE_SIZE, vma->vm_page_prot)) {
> +			hvnd_error("io_remap_pfn_range failure\n");
> +			return -EAGAIN;
> +		}
> +	} else if (vma->vm_pgoff == 1 && uctx->bf_buf_size != 0) {
> +		vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
> +
> +		if (io_remap_pfn_range(vma, vma->vm_start,
> +					(uctx->uar_base >> PAGE_SHIFT) + 1,
> +					PAGE_SIZE, vma->vm_page_prot)) {
> +			hvnd_error("io_remap_pfn_range failure\n");
> +			return -EAGAIN;
> +		}
> +	} else {
> +		hvnd_error("check code\n");
> +		return -EINVAL;
> +	}
> +
> +	return 0;
> +}
> +
> +static int hvnd_deallocate_pd(struct ib_pd *pd)
> +{
> +
> +	struct hvnd_ucontext *uctx;
> +	struct hvnd_dev *nd_dev;
> +	struct hvnd_ib_pd *hvnd_pd;
> +	struct ib_ucontext *ibuctx = pd->uobject->context;
> +
> +	hvnd_pd = to_nd_pd(pd);
> +	nd_dev = to_nd_dev(pd->device);
> +	uctx = to_nd_context(ibuctx);
> +
> +	hvnd_free_handle(nd_dev, uctx, hvnd_pd->handle,
> +			 IOCTL_ND_PD_FREE);
> +
> +	hvnd_drop_uctx_ref(nd_dev, uctx);
> +	return 0;
> +}
> +
> +static struct ib_pd *hvnd_allocate_pd(struct ib_device *ibdev,
> +				      struct ib_ucontext *context,
> +				      struct ib_udata *udata)
> +{
> +	struct hvnd_ucontext *uctx;
> +	struct hvnd_dev *nd_dev;
> +	int ret;
> +	struct hvnd_ib_pd *hvnd_pd;
> +
> +	if (!context) {
> +		hvnd_error("kernel mode context not supported\n");
> +		return ERR_PTR(-EINVAL);
> +	}
> +
> +	hvnd_pd = kzalloc(sizeof(struct hvnd_ib_pd), GFP_KERNEL);
> +
> +	if (!hvnd_pd)
> +		return ERR_PTR(-ENOMEM);
> +
> +	uctx = to_nd_context(context);
> +	nd_dev = to_nd_dev(ibdev);
> +
> +	ret = hvnd_create_pd(uctx, nd_dev, hvnd_pd);
> +	if (ret) {
> +		hvnd_error("hvnd_create_pd failure ret=%d\n", ret);
> +		goto error_cr_pd;
> +	}
> +
> +	if (context) {
> +		if (ib_copy_to_udata(udata, &hvnd_pd->pdn, sizeof(__u32))) {
> +			hvnd_error("ib_copy_to_udata failure\n");
> +			ret = -EFAULT;
> +			goto error_fault;
> +		}
> +	}
> +
> +	hvnd_acquire_uctx_ref(uctx);
> +	return &hvnd_pd->ibpd;
> +
> +error_fault:
> +	hvnd_free_handle(nd_dev, uctx, hvnd_pd->handle,
> +			 IOCTL_ND_PD_FREE);
> +
> +error_cr_pd:
> +	kfree(hvnd_pd);
> +	return ERR_PTR(ret);
> +}
> +
> +static int hvnd_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
> +			   u16 *pkey)
> +{
> +	debug_check(__func__, __LINE__);
> +	*pkey = 0;
> +	return 0;
> +}
> +
> +static int hvnd_query_gid(struct ib_device *ibdev, u8 port, int index,
> +			  union ib_gid *gid)
> +{
> +	int ret;
> +	struct hvnd_dev *nd_dev = to_nd_dev(ibdev);
> +
> +	debug_check(__func__, __LINE__);
> +
> +	ret = wait_for_completion_timeout(&nd_dev->addr_set, 60*HZ);
> +	if (!ret)
> +		return -ETIMEDOUT;
> +
> +	memset(&(gid->raw[0]), 0, sizeof(gid->raw));
> +	memcpy(&(gid->raw[0]), nd_dev->mac_addr, 6);
> +	return 0;
> +}
> +
> +static int hvnd_query_device(struct ib_device *ibdev,
> +			     struct ib_device_attr *props,
> +			     struct ib_udata *udata)
> +{
> +	struct hvnd_dev *nd_dev = to_nd_dev(ibdev);
> +	struct adapter_info_v2 *adap_info;
> +
> +	if (!nd_dev->query_pkt_set) {
> +		hvnd_error("query packet not received yet\n");
> +		return 0;
> +	}
> +
> +	adap_info = &nd_dev->query_pkt.ioctl.ad_info;
> +
> +	memset(props, 0, sizeof(*props));
> +
> +	/*
> +	 * Copy the relevant properties out.
> +	 */
> +	props->fw_ver = 0;
> +	props->device_cap_flags    = 0;
> +	//props->device_cap_flags |= IB_DEVICE_BAD_PKEY_CNTR;
> +	//props->device_cap_flags |= IB_DEVICE_BAD_QKEY_CNTR;
> +	//props->device_cap_flags |= IB_DEVICE_XRC;
> +
> +	props->vendor_id           =  0x15b3;
> +	props->vendor_part_id      = adap_info->device_id;
> +
> +	props->max_mr_size         = ~0ull;
> +	props->page_size_cap       = PAGE_SIZE;
> +	props->max_qp              = 16384;
> +	props->max_qp_wr           = min(adap_info->max_recv_q_depth,
> +					 adap_info->max_initiator_q_depth);
> +
> +	props->max_sge             = min(adap_info->max_initiator_sge,
> +					 adap_info->max_recv_sge);
> +	props->max_cq              = 0x1FFFF;
> +	props->max_cqe             = adap_info->max_completion_q_depth;
> +	props->max_mr              = 16384;
> +	props->max_pd              = 16384;
> +
> +	props->max_qp_rd_atom      = adap_info->max_inbound_read_limit;
> +	props->max_qp_init_rd_atom = adap_info->max_outbound_read_limit;
> +	props->max_res_rd_atom     = props->max_qp_rd_atom * props->max_qp;
> +	props->max_srq             = 16384;
> +	props->max_srq_wr          = adap_info->max_recv_q_depth;
> +	props->max_srq_sge         = adap_info->max_recv_sge;
> +
> +	return 0;
> +}
> +
> +static int hvnd_query_port(struct ib_device *ibdev, u8 port,
> +			   struct ib_port_attr *props)
> +{
> +	memset(props, 0, sizeof(struct ib_port_attr));
> +
> +	props->max_mtu = IB_MTU_4096;
> +	props->active_mtu = IB_MTU_4096;
> +
> +	/*
> +	 * KYS: TBD need to base this on netdev.
> +	 */
> +	props->state = IB_PORT_ACTIVE;
> +
> +	props->port_cap_flags = IB_PORT_CM_SUP;
> +
> +	props->gid_tbl_len = 1;
> +	props->pkey_tbl_len = 1;
> +	props->active_width = 1;
> +	props->active_speed = IB_SPEED_DDR; //KYS: check
> +	props->max_msg_sz = -1;
> +
> +	return 0;
> +}
> +
> +static enum rdma_link_layer
> +hvnd_get_link_layer(struct ib_device *device, u8 port)
> +{
> +	return IB_LINK_LAYER_ETHERNET;
> +}
> +
> +static ssize_t hvnd_show_rev(struct device *dev, struct device_attribute *attr,
> +			char *buf)
> +{
> +	return 0;
> +}
> +
> +static ssize_t hvnd_show_fw_ver(struct device *dev,
> +				struct device_attribute *attr, char *buf)
> +{
> +	return 0;
> +}
> +
> +static ssize_t hvnd_show_hca(struct device *dev, struct device_attribute *attr,
> +			char *buf)
> +{
> +	return 0;
> +}
> +
> +static ssize_t hvnd_show_board(struct device *dev,
> +			       struct device_attribute *attr, char *buf)
> +{
> +	return 0;
> +}
> +
> +static int hvnd_get_port_immutable(struct ib_device *ibdev, u8 port_num,
> +				   struct ib_port_immutable *immutable)
> +{
> +	struct ib_port_attr attr;
> +	int err;
> +
> +	err = hvnd_query_port(ibdev, port_num, &attr);
> +	if (err)
> +		return err;
> +
> +	immutable->pkey_tbl_len = attr.pkey_tbl_len;
> +	immutable->gid_tbl_len = attr.gid_tbl_len;
> +	immutable->core_cap_flags = RDMA_CORE_PORT_IWARP;
> +
> +	return 0;
> +}
> +
> +static struct ib_qp *hvnd_ib_create_qp(struct ib_pd *pd,
> +				       struct ib_qp_init_attr *attrs,
> +				       struct ib_udata *udata)
> +{
> +	struct hvnd_ucontext *uctx;
> +	struct hvnd_dev *nd_dev;
> +	struct mlx4_ib_create_qp ucmd;
> +	struct hvnd_qp *qp;
> +	int ret = 0;
> +	struct hvnd_ib_pd *hvnd_pd = to_nd_pd(pd);
> +	struct hvnd_cq *send_cq = to_nd_cq(attrs->send_cq);
> +	struct hvnd_cq *recv_cq = to_nd_cq(attrs->recv_cq);
> +
> +	uctx = get_uctx_from_pd(pd);
> +	nd_dev = to_nd_dev(pd->device);
> +
> +	if (attrs->qp_type != IB_QPT_RC) {
> +		hvnd_error("attrs->qp_type=%d not IB_QPT_RC\n", attrs->qp_type);
> +		return ERR_PTR(-EINVAL);
> +	}
> +
> +	qp = kzalloc(sizeof(*qp), GFP_KERNEL);
> +	if (!qp) {
> +		ret = -ENOMEM;
> +		goto err_done;
> +	}
> +
> +	qp->uctx = uctx;
> +
> +	if (ib_copy_from_udata(&ucmd, udata, sizeof(ucmd))) {
> +		hvnd_error("ib_copy_from_udata failed\n");
> +		ret = -EFAULT;
> +		goto err_ucpy;
> +	}
> +
> +	qp->qp_buf = (void *)ucmd.buf_addr;
> +	qp->db_addr = (void *)ucmd.db_addr;
> +	qp->log_sq_bb_count = ucmd.log_sq_bb_count;
> +	qp->log_sq_stride = ucmd.log_sq_stride;
> +	qp->sq_no_prefetch = ucmd.sq_no_prefetch;
> +	qp->port = attrs->port_num;
> +
> +	init_waitqueue_head(&qp->wait);
> +	atomic_set(&qp->refcnt, 1);
> +
> +	qp->recv_cq = recv_cq;
> +	qp->send_cq = send_cq;
> +	qp->nd_dev = nd_dev;
> +
> +	qp->receive_cq_handle = recv_cq->cq_handle;
> +	qp->initiator_cq_handle = send_cq->cq_handle;
> +	qp->pd_handle = hvnd_pd->handle;
> +	qp->cq_notify = false;
> +
> +	qp->ibqp.qp_num = attrs->qp_type == IB_QPT_SMI ? 0 : 1;
> +
> +	qp->max_inline_data = attrs->cap.max_inline_data;
> +
> +	qp->initiator_q_depth = attrs->cap.max_send_wr;
> +	qp->initiator_request_sge = attrs->cap.max_send_sge;
> +
> +
> +	qp->receive_q_depth = attrs->cap.max_recv_wr;
> +	qp->receive_request_sge = attrs->cap.max_recv_sge;
> +
> +	set_rq_size(nd_dev, &attrs->cap, qp);
> +
> +	set_user_sq_size(nd_dev, qp, &ucmd);
> +
> +	qp->umem = ib_umem_get(&uctx->ibucontext, ucmd.buf_addr,
> +				qp->buf_size, 0, 0);
> +	if (IS_ERR(qp->umem)) {
> +		ret = PTR_ERR(qp->umem);
> +		hvnd_error("ib_umem_get failed ret=%d\n", ret);
> +		goto err_ucpy;
> +	}
> +
> +	ret =  hvnd_db_map_user(uctx, ucmd.db_addr, &qp->db_umem);
> +
> +	if (ret) {
> +		hvnd_error("hvnd_db_map_user failed ret=%d\n", ret);
> +		goto err_db_map;
> +	}
> +
> +	ret = hvnd_create_qp(nd_dev, uctx, qp);
> +
> +	if (ret) {
> +		hvnd_error("hvnd_create_qp failed ret=%d\n", ret);
> +		goto err_qp;
> +	}
> +
> +	hvnd_acquire_uctx_ref(uctx);
> +
> +	qp->ibqp.qp_num = qp->qpn;
> +	qp->ibqp.qp_type = IB_QPT_RC;
> +
> +
> +	return &qp->ibqp;
> +
> +err_qp:
> +	hvnd_db_unmap_user(uctx, ucmd.db_addr);
> +
> +err_db_map:
> +	ib_umem_release(qp->umem);
> +
> +err_ucpy:
> +	kfree(qp);
> +err_done:
> +	return ERR_PTR(ret);
> +}
> +
> +static int hvnd_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
> +			     int attr_mask, struct ib_udata *udata)
> +{
> +	struct hvnd_qp *qp = to_nd_qp(ibqp);
> +	struct hvnd_dev *nd_dev = to_nd_dev(ibqp->device);
> +	enum ib_qp_state cur_state, new_state;
> +	int ret = 0;
> +
> +	if (attr != NULL) {
> +		cur_state = (attr_mask & IB_QP_CUR_STATE)
> +			? attr->cur_qp_state : qp->qp_state;
> +		new_state = (attr_mask & IB_QP_STATE)
> +			? attr->qp_state : cur_state;
> +
> +		hvnd_debug("qp->qp_state is %d new state is %d\n",
> +			   qp->qp_state, new_state);
> +		hvnd_debug("current qp state is %d\n", cur_state);
> +		if (attr_mask & IB_QP_STATE) {
> +			/* Ensure the state is valid */
> +			if (attr->qp_state < 0 || attr->qp_state > IB_QPS_ERR) {
> +				hvnd_error("incorrect qp state attr->qp_state=%d\n",
> +					   attr->qp_state);
> +				return -EINVAL;
> +			}
> +
> +			if (qp->qp_state != new_state) {
> +				qp->qp_state = new_state;
> +				/*
> +				 * The only state transition supported is the
> +				 * transition to error state.
> +				 */
> +				switch (new_state) {
> +				case IB_QPS_ERR:
> +				case IB_QPS_SQD:
> +					ret = hvnd_flush_qp(nd_dev, qp->uctx,
> +							    qp);
> +
> +					if (ret)
> +						hvnd_error("hvnd_flush_qp failed ret=%d\n", ret);
> +
> +					// immediately notify the upper layer
> +					// on disconnection
> +					if (!ret && qp->connector)
> +						hvnd_process_notify_disconnect(
> +							qp->connector,
> +							STATUS_SUCCESS);
> +
> +					return ret;
> +
> +				default:
> +					break;
> +				}
> +			}
> +		}
> +	}
> +	return 0;
> +}
> +
> +
> +static int hvnd_ib_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
> +		     int attr_mask, struct ib_qp_init_attr *init_attr)
> +{
> +	struct hvnd_qp *qp = to_nd_qp(ibqp);
> +
> +	memset(attr, 0, sizeof(*attr));
> +	memset(init_attr, 0, sizeof(*init_attr));
> +
> +	attr->qp_state = qp->qp_state;
> +
> +	init_attr->cap.max_send_wr = qp->max_send_wr;
> +	init_attr->cap.max_recv_wr = qp->max_recv_wr;
> +
> +	init_attr->cap.max_send_sge = qp->max_send_sge;
> +	init_attr->cap.max_recv_sge = qp->max_recv_sge;
> +	init_attr->cap.max_inline_data = qp->max_inline_data;
> +
> +	init_attr->sq_sig_type = IB_SIGNAL_ALL_WR;
> +
> +	return 0;
> +}
> +
> +static void hvnd_refuse_connection(struct hvnd_ep_obj *connector, int status);
> +static int hvnd_destroy_qp(struct ib_qp *ib_qp)
> +{
> +	int ret;
> +	struct hvnd_qp *qp = to_nd_qp(ib_qp);
> +	struct hvnd_dev *nd_dev = to_nd_dev(ib_qp->device);
> +	u64 jiffies;
> +
> +	if (!qp->connector) {
> +		hvnd_warn("error: connector is NULL; skip destroying connector\n");
> +		goto free_qp;
> +	}
> +
> +	/*
> +	 * should we flush the qp first on ctrl-C?,
> +	 * no need to disconnect on abrupt shutdown?
> +	 */
> +	if (qp->qp_state != IB_QPS_ERR && qp->qp_state != IB_QPS_SQD) {
> +		hvnd_warn("qp_state=%d, doing abrupt disconnect\n",
> +			  qp->qp_state);
> +		hvnd_flush_qp(nd_dev, qp->uctx, qp);
> +
> +		ep_stop(qp->connector);
> +
> +		// now no pending activity is possible on the connector
> +
> +		switch (qp->connector->cm_state) {
> +
> +		case hvnd_cm_idle:
> +		case hvnd_cm_connect_reply_refused:
> +		case hvnd_cm_connect_request_sent:
> +		case hvnd_cm_close_sent:
> +			hvnd_warn("cm_state = %d not doing anything\n",
> +				  qp->connector->cm_state);
> +			break;
> +
> +		case hvnd_cm_connect_received:
> +			hvnd_warn("cm_state = %d refusing pending connection request\n",
> +				  qp->connector->cm_state);
> +			hvnd_refuse_connection(qp->connector, -ECONNREFUSED);
> +			break;
> +
> +		case hvnd_cm_connect_reply_sent:
> +		case hvnd_cm_established_sent:
> +		case hvnd_cm_accept_sent:
> +			hvnd_warn("cm_state = %d notifying disconnect on existing connection\n",
> +				  qp->connector->cm_state);
> +			hvnd_process_notify_disconnect(qp->connector,
> +						       STATUS_CANCELLED);
> +			break;
> +
> +		default:
> +			hvnd_error("unknown cm_state = %d\n",
> +				   qp->connector->cm_state);
> +
> +		}
> +		goto free_connector;
> +	} else {
> +		hvnd_debug("qp_state=%d, doing normal disconnect\n",
> +			   qp->qp_state);
> +	}
> +
> +	if (!ep_add_work_pending(qp->connector))
> +		goto free_connector;
> +
> +	init_completion(&qp->connector->disconnect_event);
> +
> +	/*
> +	 * First issue a disconnect on the connector.
> +	 */
> +
> +	hvnd_debug("calling hvnd_connector_disconnect\n");
> +	ret = hvnd_connector_disconnect(nd_dev, qp->uctx,
> +					qp->connector->ep_handle,
> +					qp->connector);
> +	if (ret) {
> +		ep_del_work_pending(qp->connector);
> +		hvnd_error("disconnect: retval is %d\n", ret);
> +		ep_stop(qp->connector);
> +		goto free_connector;
> +	}
> +	/*
> +	 * Now wait for the disconnect.
> +	 */
> +	jiffies = get_jiffies_64();
> +	wait_for_completion(&qp->connector->disconnect_event);
> +	hvnd_debug("Completed disconnect connector=%p jiffies=%llu\n",
> +		   qp->connector, get_jiffies_64() - jiffies);
> +
> +	/*
> +	 * Now free up the connector and drop the reference on uctx.
> +	 */
> +
> +	ep_stop(qp->connector);
> +
> +free_connector:
> +	hvnd_debug("destroying connector handle: %p\n",
> +		   (void *) qp->connector->ep_handle);
> +	hvnd_free_handle(nd_dev, qp->uctx,
> +			 qp->connector->ep_handle,
> +			 IOCTL_ND_CONNECTOR_FREE);
> +
> +	hvnd_drop_uctx_ref(nd_dev, qp->uctx);
> +	hvnd_destroy_ep(qp->connector);
> +	qp->connector = NULL;
> +free_qp:
> +	atomic_dec(&qp->refcnt);
> +	hvnd_debug("Waiting for the ref cnt to go to 0\n");
> +
> +	wait_event(qp->wait, !atomic_read(&qp->refcnt));
> +
> +	hvnd_debug("About to destroy qp\n");
> +	hvnd_db_unmap_user(qp->uctx, (u64)qp->db_addr);
> +	ib_umem_release(qp->umem);
> +
> +	hvnd_debug("About to free qp\n");
> +	ret = hvnd_free_qp(nd_dev, qp->uctx, qp);
> +
> +	if (ret == 0) {
> +		hvnd_drop_uctx_ref(nd_dev, qp->uctx);
> +		kfree(qp);
> +	} else {
> +		hvnd_error("free qp failed: ret is %d\n", ret);
> +	}
> +
> +	return ret;
> +}
> +
> +static struct ib_cq *hvnd_ib_create_cq(struct ib_device *ibdev,
> +				       const struct ib_cq_init_attr *attr,
> +				       struct ib_ucontext *ib_context,
> +				       struct ib_udata *udata)
> +{
> +	struct hvnd_ucontext *uctx;
> +	struct hvnd_dev *nd_dev;
> +	struct mlx4_ib_create_cq ucmd;
> +	struct hvnd_cq *cq;
> +	int ret = 0;
> +	int entries = attr->cqe;
> +
> +	uctx = to_nd_context(ib_context);
> +	nd_dev = to_nd_dev(ibdev);
> +
> +	if (entries < 1 || entries > uctx->max_cqe) {
> +		hvnd_error("incorrct entries=%d\n", entries);
> +		ret = -EINVAL;
> +		goto err_done;
> +	}
> +
> +	cq = kzalloc(sizeof(*cq), GFP_KERNEL);
> +	if (!cq) {
> +		ret = -ENOMEM;
> +		goto err_done;
> +	}
> +
> +	entries      = roundup_pow_of_two(entries + 1);
> +	cq->ibcq.cqe = entries - 1;
> +	cq->entries = entries;
> +	cq->uctx = uctx;
> +
> +	if (ib_copy_from_udata(&ucmd, udata, sizeof(ucmd))) {
> +		hvnd_error("ib_copy_from_udata failed\n");
> +		ret = -EFAULT;
> +		goto err_ucpy;
> +	}
> +
> +	cq->cq_buf = (void *)ucmd.buf_addr;
> +	cq->db_addr = (void *)ucmd.db_addr;
> +	cq->arm_sn = 0;
> +
> +	/*
> +	 * Initialize the IRP state. Need to have a separate irp state
> +	 * for CQ; for now share it with Listener/connector.
> +	 */
> +	ret = hvnd_init_ep(&cq->ep_object, NULL, ND_CQ, nd_dev, uctx);
> +
> +	if (ret) {
> +		hvnd_error("hvnd_init_ep failed ret=%d\n", ret);
> +		goto  err_ucpy;
> +	}
> +
> +	cq->ep_object.cq = cq;
> +	cq->monitor = true;
> +
> +	cq->umem = ib_umem_get(ib_context, ucmd.buf_addr,
> +				(entries * uctx->cqe_size),
> +				IB_ACCESS_LOCAL_WRITE, 1);
> +	if (IS_ERR(cq->umem)) {
> +		ret = IS_ERR(cq->umem);
> +		hvnd_error("ib_umem_get failed ret=%d\n", ret);
> +		goto err_ucpy;
> +	}
> +
> +	ret =  hvnd_db_map_user(uctx, ucmd.db_addr, &cq->db_umem);
> +
> +	if (ret) {
> +		hvnd_error("hvnd_db_map_user failed ret=%d\n", ret);
> +		goto err_db_map;
> +	}
> +
> +	ret = hvnd_create_cq(nd_dev, uctx, cq);
> +
> +	if (ret) {
> +		hvnd_error("hvnd_create_cq failed ret=%d\n", ret);
> +		goto err_cq;
> +	}
> +
> +	cq->ep_object.ep_handle = cq->cq_handle;
> +
> +	if (ib_copy_to_udata(udata, &cq->cqn, sizeof(__u32))) {
> +		hvnd_error("ib_copy_to_udata failed\n");
> +		ret = -EFAULT;
> +		goto err_ucpy_out;
> +	}
> +
> +	if (!disable_cq_notify) {
> +
> +		if (!ep_add_work_pending(&cq->ep_object))
> +			goto err_ucpy_out;
> +
> +		ret = hvnd_notify_cq(nd_dev, cq, ND_CQ_NOTIFY_ANY,
> +			     (u64)&cq->ep_object);
> +
> +		if (ret) {
> +			ep_del_work_pending(&cq->ep_object);
> +			hvnd_error("hvnd_notify_cq failed ret=%d\n", ret);
> +			goto err_ucpy_out;
> +		}
> +	}
> +
> +	hvnd_acquire_uctx_ref(uctx);
> +
> +	return &cq->ibcq;
> +
> +err_ucpy_out:
> +	hvnd_destroy_cq(nd_dev, cq);
> +
> +err_cq:
> +	hvnd_db_unmap_user(uctx, ucmd.db_addr);
> +
> +err_db_map:
> +	ib_umem_release(cq->umem);
> +
> +err_ucpy:
> +	kfree(cq);
> +err_done:
> +	return ERR_PTR(ret);
> +}
> +
> +static struct ib_qp *hvnd_get_qp(struct ib_device *dev, int qpn)
> +{
> +	struct hvnd_dev *nd_dev;
> +	struct hvnd_qp *qp = NULL;
> +
> +	nd_dev = to_nd_dev(dev);
> +	qp = get_qpp(nd_dev, qpn);
> +	return qp ?  &qp->ibqp : NULL;
> +}
> +
> +static int hvnd_ib_destroy_cq(struct ib_cq *ib_cq)
> +{
> +	struct hvnd_ucontext *uctx;
> +	struct hvnd_dev *nd_dev;
> +	struct hvnd_cq *cq;
> +
> +	cq = to_nd_cq(ib_cq);
> +	uctx = cq->uctx;
> +	nd_dev = to_nd_dev(uctx->ibucontext.device);
> +
> +	cq->monitor = false;
> +
> +//	hvnd_cancel_io(&cq->ep_object);
> +	ep_stop(&cq->ep_object);
> +
> +	hvnd_deinit_ep(&cq->ep_object);
> +
> +	hvnd_db_unmap_user(uctx, (u64)cq->db_addr);
> +	ib_umem_release(cq->umem);
> +
> +	hvnd_destroy_cq(nd_dev, cq);
> +
> +	hvnd_drop_uctx_ref(nd_dev, uctx);
> +	kfree(cq);
> +
> +	return 0;
> +}
> +
> +static int hvnd_resize_cq(struct ib_cq *cq, int cqe, struct ib_udata *udata)
> +{
> +	/*
> +	 * NDDirect does not support resizing CQ.
> +	 */
> +	hvnd_info("check code\n");
> +	return -ENOSYS;
> +}
> +
> +static int hvnd_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc)
> +{
> +	hvnd_info("check code\n");
> +	return 0;
> +}
> +
> +static struct ib_mr *hvnd_get_dma_mr(struct ib_pd *pd, int acc)
> +{
> +	hvnd_info("check code\n");
> +	return NULL;
> +}
> +
> +static void debug_dump_umem(struct ib_umem *umem)
> +{
> +#ifdef HVND_MEM_DEBUG
> +	struct ib_umem_chunk *chunk;
> +	struct scatterlist *sg;
> +	int len, j, entry;
> +	int shift = ffs(umem->page_size) - 1;
> +
> +	hvnd_debug("umem=%p\n", umem);
> +	hvnd_debug("context=%p length=%lu offset=%d page_size=%d writable=%d hugetlb=%d\n",
> +		umem->context,
> +		umem->length,
> +		umem->offset,
> +		umem->page_size,
> +		umem->writable,
> +		umem->hugetlb);
> +
> +	list_for_each_entry(chunk, &umem->chunk_list, list) {
> +		hvnd_debug("chunk->nmap=%d\n", chunk->nmap);
> +		for (j = 0; j < chunk->nmap; ++j) {
> +			sg = &chunk->page_list[j];
> +			hvnd_debug("sg_dma_len=%d sg_dma_address=%llx\n",
> +				   sg_dma_len(sg), sg_dma_address(sg));
> +			hvnd_debug("page_link=%lx offset=%u length=%u\n",
> +				   sg->page_link, sg->offset, sg->length);
> +			len = sg_dma_len(&chunk->page_list[j]) >> shift;
> +			for_each_sg(&chunk->page_list[j], sg, len, entry) {
> +				hvnd_debug("PFN=%lu\n",
> +					   page_to_pfn(sg_page(sg)));
> +			}
> +		}
> +	}
> +#endif
> +}
> +
> +
> +static struct ib_mr *hvnd_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
> +				      u64 virt, int acc, struct ib_udata *udata)
> +{
> +	int err = 0;
> +	struct hvnd_ib_pd *hvndpd = to_nd_pd(pd);
> +	struct hvnd_mr *mr;
> +
> +	mr = kmalloc(sizeof(*mr), GFP_KERNEL);
> +	if (!mr)
> +		return ERR_PTR(-ENOMEM);
> +	mr->pd = hvndpd;
> +
> +	mr->umem = ib_umem_get(pd->uobject->context, start, length, acc, 0);
> +	if (IS_ERR(mr->umem)) {
> +		err = PTR_ERR(mr->umem);
> +		hvnd_error("ib_umem_get failed ret=%d\n", err);
> +		kfree(mr);
> +		return ERR_PTR(err);
> +	}
> +
> +	debug_dump_umem(mr->umem);
> +
> +	mr->start = start;
> +	mr->length = length;
> +	mr->virt = virt;
> +	mr->acc = acc;
> +
> +	hvnd_debug("start=%llx length=%llx virt=%llx acc=%d\n",
> +		   start, length, virt, acc);
> +
> +	/*
> +	 * First create a memory region.
> +	 */
> +	err = hvnd_cr_mr(to_nd_dev(pd->device),
> +			to_nd_context(pd->uobject->context), hvndpd->handle,
> +			&mr->mr_handle);
> +	if (err) {
> +		hvnd_error("cr_mr failed; ret is %d\n", err);
> +		goto err;
> +	}
> +
> +	err =  hvnd_mr_register(to_nd_dev(pd->device),
> +				to_nd_context(pd->uobject->context), mr);
> +
> +	if (err)
> +		goto err0;
> +
> +	hvnd_acquire_uctx_ref(to_nd_context(pd->uobject->context));
> +
> +	return &mr->ibmr;
> +
> +err0:
> +	hvnd_free_mr(to_nd_dev(pd->device),
> +		to_nd_context(pd->uobject->context), mr->mr_handle);
> +err:
> +	ib_umem_release(mr->umem);
> +	kfree(mr);
> +	return ERR_PTR(err);
> +}
> +
> +
> +
> +static int hvnd_dereg_mr(struct ib_mr *ib_mr)
> +{
> +	int ret;
> +	struct hvnd_mr *mr = to_nd_mr(ib_mr);
> +	struct hvnd_ucontext *uctx = to_nd_context(ib_mr->pd->uobject->context);
> +	struct hvnd_dev *nd_dev = to_nd_dev(ib_mr->device);
> +
> +
> +	hvnd_debug("dereg_mr entering\n");
> +
> +	ret = hvnd_deregister_mr(nd_dev, uctx, mr->mr_handle);
> +
> +	if (ret) {
> +		hvnd_error("hvnd_deregister_mr() failed: %x\n", ret);
> +		return ret;
> +	}
> +	/*
> +	 * Now free up the memory region.
> +	 */
> +
> +	ret = hvnd_free_mr(nd_dev, uctx, mr->mr_handle);
> +	if (ret) {
> +		hvnd_error("hvnd_free_mr() failed: %x\n", ret);
> +		return ret;
> +	}
> +
> +	ib_umem_release(mr->umem);
> +
> +	hvnd_drop_uctx_ref(nd_dev, uctx);
> +	kfree(mr);
> +
> +	hvnd_debug("dereg_mr done\n");
> +	return 0;
> +}
> +
> +static struct ib_mw *hvnd_alloc_mw(struct ib_pd *pd, enum ib_mw_type type,
> +				   struct ib_udata *udata)
> +{
> +	hvnd_info("check code\n");
> +	return NULL;
> +}
> +
> +static int hvnd_dealloc_mw(struct ib_mw *mw)
> +{
> +	debug_check(__func__, __LINE__);
> +	return 0;
> +}
> +
> +static int hvnd_arm_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags flags)
> +{
> +	struct hvnd_ucontext *uctx;
> +	struct hvnd_dev *nd_dev;
> +	struct hvnd_cq *cq;
> +
> +	cq = to_nd_cq(ibcq);
> +	uctx = cq->uctx;
> +	nd_dev = to_nd_dev(uctx->ibucontext.device);
> +
> +
> +	debug_check(__func__, __LINE__);
> +
> +	return 0;
> +}
> +
> +static int hvnd_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
> +			  struct ib_send_wr **bad_wr)
> +{
> +	debug_check(__func__, __LINE__);
> +	return 0;
> +}
> +
> +int hvnd_post_receive(struct ib_qp *ibqp, struct ib_recv_wr *wr,
> +		      struct ib_recv_wr **bad_wr)
> +{
> +	debug_check(__func__, __LINE__);
> +	return 0;
> +}
> +
> +static int hvnd_resolve_addr(struct sockaddr_in *laddr,
> +			     struct sockaddr_in *raddr,
> +			     struct if_physical_addr *phys_addrstruct)
> +{
> +	int ret;
> +
> +	phys_addrstruct->length = ETH_ALEN;
> +	ret = hvnd_get_neigh_mac_addr((struct sockaddr *)laddr,
> +					(struct sockaddr *)raddr,
> +					phys_addrstruct->addr);
> +
> +	hvnd_debug("Dest MAC is %pM\n", phys_addrstruct->addr);
> +	return ret;
> +}
> +
> +static int hvnd_connect(struct iw_cm_id *cm_id,
> +			struct iw_cm_conn_param *conn_param)
> +{
> +	int ret = 0;
> +	struct hvnd_dev *nd_dev;
> +	struct hvnd_ep_obj  *ep_object;
> +	struct sockaddr_in *raddr = (struct sockaddr_in *)&cm_id->remote_addr;
> +	struct sockaddr_in *laddr = (struct sockaddr_in *)&cm_id->local_addr;
> +	struct hvnd_qp *qp;
> +	struct if_physical_addr phys_addrstruct;
> +	union nd_sockaddr_inet dest_addr;
> +	u64 connector_handle;
> +	union nd_sockaddr_inet addr;
> +	char addr_buf[50];
> +
> +	if (cm_id->remote_addr.ss_family != AF_INET) {
> +		hvnd_error("cm_id->remote_addr.ss_family=%d not AF_INET\n",
> +			   cm_id->remote_addr.ss_family);
> +		return -ENOSYS;
> +	}
> +
> +	qp = get_qpp(to_nd_dev(cm_id->device), conn_param->qpn);
> +
> +	if (!qp) {
> +		hvnd_error("failed to find qp conn_param->qpn=%d\n",
> +			   conn_param->qpn);
> +		return -EINVAL;
> +	}
> +
> +	cm_id->provider_data = qp;
> +	cm_id->add_ref(cm_id);
> +	qp->cm_id = cm_id;
> +
> +	/*
> +	 * Set the read/write limits.
> +	 * Can we change the limits on a created QP? Luke?
> +	 */
> +	nd_dev = to_nd_dev(cm_id->device);
> +	ep_object = hvnd_setup_ep(cm_id, ND_CONNECTOR, nd_dev, qp->uctx);
> +	hvnd_debug("active connection: local irp is %d\n",
> +		   ep_object->local_irp);
> +	if (!ep_object) {
> +		hvnd_error("hvnd_setup_ep failure\n");
> +		ret = -ENOMEM;
> +		goto err_limit;
> +	}
> +
> +	ret = hvnd_cr_connector(nd_dev, qp->uctx,
> +				&connector_handle);
> +
> +	if (ret) {
> +		hvnd_error("hvnd_cr_connector failure ret=%d\n", ret);
> +		goto err_cr_connector;
> +	}
> +
> +	hvnd_acquire_uctx_ref(qp->uctx);
> +	ep_object->ep_handle = connector_handle;
> +	ep_object->incoming = false;
> +	qp->connector = ep_object;
> +
> +	/*
> +	 * Bind the local address to the connector.
> +	 */
> +	hvnd_debug("Connect local address is %s\n",
> +		   debug_inet_ntoa(laddr->sin_addr, addr_buf));
> +
> +	memcpy(&addr.ipv4, laddr, sizeof(struct sockaddr_in));
> +	hvnd_debug("CONNECT AF %d port %d addr %s\n",
> +		   addr.ipv4.sin_family, addr.ipv4.sin_port,
> +		   debug_inet_ntoa(addr.ipv4.sin_addr, addr_buf));
> +
> +	ret = hvnd_bind_connector(nd_dev, qp->uctx,
> +				connector_handle,
> +				&addr);
> +
> +	if (ret) {
> +		hvnd_error("hvnd_bind_connector failed ret=%d\n", ret);
> +		goto err_bind_connector;
> +	}
> +
> +	ret = hvnd_resolve_addr(laddr, raddr, &phys_addrstruct);
> +	if (ret) {
> +		hvnd_error("hvnd_resolve_addr failed ret=%d\n", ret);
> +		goto err_bind_connector;
> +	}
> +
> +	memcpy(&dest_addr.ipv4, raddr, sizeof(struct sockaddr_in));
> +
> +
> +
> +	/*
> +	 * Now attempt to connect.
> +	 */
> +
> +	hvnd_debug("About to initiate connection\n");
> +
> +	if (!ep_add_work_pending(ep_object))
> +		goto err_bind_connector;
> +
> +	ep_object->cm_state = hvnd_cm_connect_received;
> +	ret = hvnd_connector_connect(nd_dev, qp->uctx,
> +					ep_object->ep_handle,
> +					conn_param->ird, conn_param->ord,
> +					conn_param->private_data_len,
> +					(u8 *)conn_param->private_data,
> +					qp->qp_handle,
> +					&phys_addrstruct, &dest_addr,
> +					ep_object);
> +
> +	if (ret == 0)
> +		return 0;
> +
> +	ep_object->cm_state = hvnd_cm_idle;
> +	ep_del_work_pending(ep_object);
> +	hvnd_error("hvnd_connector_connect failed ret=%d\n", ret);
> +
> +err_bind_connector:
> +	qp->connector = NULL;
> +	hvnd_free_connector(nd_dev, qp->uctx,
> +			    connector_handle);
> +	hvnd_drop_uctx_ref(nd_dev, qp->uctx);
> +
> +err_cr_connector:
> +	kfree(ep_object);
> +
> +err_limit:
> +	cm_id->provider_data = NULL;
> +	qp->cm_id = NULL;
> +	cm_id->rem_ref(cm_id);
> +	return ret;
> +}
> +
> +static int hvnd_accept_cr(struct iw_cm_id *cm_id,
> +			  struct iw_cm_conn_param *conn_param)
> +{
> +	int ret = 0;
> +	struct hvnd_dev *nd_dev;
> +	struct hvnd_qp *qp;
> +	struct hvnd_ep_obj *connector;
> +	enum ibv_qp_state new_qp_state;
> +
> +	hvnd_debug("Accepting connection - PASSIVE\n");
> +	nd_dev = to_nd_dev(cm_id->device);
> +	qp = get_qpp(to_nd_dev(cm_id->device), conn_param->qpn);
> +
> +	if (!qp) {
> +		hvnd_error("get_qpp failed conn_param->qpn=%d\n",
> +			   conn_param->qpn);
> +		return -EINVAL;
> +	}
> +
> +
> +	connector = (struct hvnd_ep_obj *)cm_id->provider_data;
> +	qp->connector = connector;
> +
> +	if (connector == NULL) {
> +		hvnd_error("NULL connector!\n");
> +		return -EINVAL;
> +	}
> +	hvnd_debug("connector's cm_id is %p caller cm_id=%p\n",
> +		   connector->cm_id, cm_id);
> +
> +	connector->cq = qp->recv_cq;
> +
> +
> +	/*
> +	 * Setup state for the accepted connection.
> +	 */
> +	cm_id->add_ref(cm_id);
> +	connector->cm_id = cm_id;
> +	if (conn_param == NULL) {
> +		hvnd_error("NULL conn_param!\n");
> +		return -EINVAL;
> +	}
> +
> +	connector->ord = conn_param->ord;
> +	connector->ird = conn_param->ird;
> +
> +	if (!ep_add_work_pending(connector))
> +		goto error;
> +
> +	init_completion(&connector->connector_accept_event);
> +
> +	ret = hvnd_connector_accept(nd_dev, qp->uctx, connector->ep_handle,
> +				    qp->qp_handle, conn_param->ird,
> +				    conn_param->ord,
> +				    conn_param->private_data_len,
> +				    conn_param->private_data,
> +				    &new_qp_state, connector);
> +
> +	if (ret) {
> +		ep_del_work_pending(connector);
> +		hvnd_error("connector accept failed\n");
> +		goto error;
> +	}
> +
> +	wait_for_completion(&connector->connector_accept_event);
> +	ret = connector->connector_accept_status;
> +
> +	if (ret) {
> +		hvnd_error("connector_accept failed status=%x\n", ret);
> +		ret = -EIO;
> +		goto error;
> +	}
> +
> +	hvnd_debug("Passive Connection Accepted; new qp state is %d\n",
> +		   new_qp_state);
> +	connector->cm_state = hvnd_cm_accept_sent;
> +	return 0;
> +
> +error:
> +	ep_stop(connector);
> +	connector->cm_id = NULL;
> +	connector->cm_state = hvnd_cm_idle;
> +
> +	qp->connector = NULL;
> +	cm_id->rem_ref(cm_id);
> +
> +	return ret;
> +}
> +
> +static int hvnd_reject_cr(struct iw_cm_id *cm_id, const void *pdata,
> +			  u8 pdata_len)
> +{
> +	debug_check(__func__, __LINE__);
> +	return 0;
> +}
> +
> +void hvnd_process_disconnect(struct hvnd_ep_obj *ep_object, int status)
> +{
> +	struct iw_cm_event cm_event;
> +
> +	switch (status) {
> +	case STATUS_SUCCESS:
> +	case STATUS_CANCELLED:
> +		break;
> +
> +	default:
> +		hvnd_warn("disconnect complete failed: status:%d\n", status);
> +	}
> +
> +
> +	hvnd_debug("active disconnect processed\n");
> +	memset(&cm_event, 0, sizeof(cm_event));
> +
> +	complete(&ep_object->disconnect_event);
> +}
> +
> +
> +void hvnd_process_notify_disconnect(struct hvnd_ep_obj *ep_object, int status)
> +{
> +	struct iw_cm_event cm_event;
> +
> +	// make sure we only disconnect once
> +	if (atomic_xchg(&ep_object->disconnect_notified, 1))
> +		return;
> +
> +	/*
> +	 * Turn off CQ monitoring.
> +	 */
> +	if (ep_object->cq)
> +		ep_object->cq->monitor = false;
> +
> +	switch (ep_object->cm_state) {
> +	case hvnd_cm_connect_reply_sent:
> +	case hvnd_cm_established_sent:
> +	case hvnd_cm_accept_sent:
> +		break;
> +
> +	default:
> +		hvnd_error("unexpected cm_state=%d\n", ep_object->cm_state);
> +		return;
> +	}
> +
> +	switch (status) {
> +	case STATUS_SUCCESS:
> +	case STATUS_CANCELLED:
> +	case STATUS_DISCONNECTED:
> +		break;
> +
> +	default:
> +		hvnd_warn("notify disconnect complete failed: status:%d\n",
> +			  status);
> +	}
> +
> +	hvnd_debug("passive disconnect notified\n");
> +	memset(&cm_event, 0, sizeof(cm_event));
> +
> +	/*
> +	 * Other end disconnected.
> +	 * Connection has been disconnected;
> +	 * notify the cm layer.
> +	 */
> +	cm_event.status = -ECONNRESET;
> +	cm_event.event = IW_CM_EVENT_CLOSE;
> +
> +	if ((ep_object->cm_id) &&
> +	    (ep_object->cm_id->event_handler)) {
> +
> +		ep_object->cm_id->event_handler(ep_object->cm_id, &cm_event);
> +
> +		ep_object->cm_id->rem_ref(ep_object->cm_id);
> +		ep_object->cm_state = hvnd_cm_close_sent;
> +	}
> +}
> +
> +void hvnd_process_connector_accept(struct hvnd_ep_obj *ep_object, int status)
> +{
> +	struct iw_cm_event cm_event;
> +	int ret;
> +
> +	/*
> +	 * This is the problem area the return status may be:
> +	 * 1: 0xc00000b5 (3221225653) - {Device Timeout} The specified I/O
> +	 *    operation on %hs was not completed before the time-out period
> +	 *    expired
> +	 * 2: NTSTATUS 0xc0000241 (3221226049) - The transport connection was
> +	 *    aborted by the local system.
> +	 * If we do nothing here, iwcm will wait for IW_CM_EVENT_ESTABLISHED
> +	 * forever, and unable to clean shutdown need to fail the call earlier
> +	 * on accept.
> +	 */
> +
> +	ep_object->connector_accept_status = status;
> +
> +	if (status) {
> +		hvnd_error("Connector accept failed; status is %x\n", status);
> +		complete(&ep_object->connector_accept_event);
> +		return;
> +	}
> +
> +	memset(&cm_event, 0, sizeof(cm_event));
> +	cm_event.event = IW_CM_EVENT_ESTABLISHED;
> +	cm_event.ird = ep_object->ird;
> +	cm_event.ord = ep_object->ord;
> +	cm_event.provider_data = (void *)ep_object;
> +
> +	/*
> +	 * We have successfully passively accepted the
> +	 * incoming connection.
> +	 */
> +
> +	hvnd_debug("Passive connection accepted!!\n");
> +	if ((ep_object->cm_id) &&
> +	    (ep_object->cm_id->event_handler)) {
> +		ep_object->cm_id->event_handler(ep_object->cm_id, &cm_event);
> +		ep_object->cm_state = hvnd_cm_established_sent;
> +	}
> +
> +	complete(&ep_object->connector_accept_event);
> +
> +	/*
> +	 * Request notification if the other end
> +	 * were to disconnect.
> +	 */
> +	if (!ep_add_work_pending(ep_object))
> +		return;
> +
> +	ret = hvnd_connector_notify_disconnect(ep_object->nd_dev,
> +						   ep_object->uctx,
> +						   ep_object->ep_handle,
> +						   ep_object);
> +
> +	if (ret) {
> +		ep_del_work_pending(ep_object);
> +		hvnd_error("Connector notify disconnect failed; ret: %d\n",
> +			   ret);
> +	}
> +}
> +
> +
> +void hvnd_process_cq_event_pending(struct hvnd_ep_obj *ep_object,
> +					 int status)
> +{
> +
> +	struct ib_cq *ibcq;
> +	struct hvnd_cq *cq;
> +
> +	cq = ep_object->cq;
> +	ibcq = &ep_object->cq->ibcq;
> +
> +	if (!cq->monitor)
> +		return;
> +
> +	// call the previous CQ complete
> +	if ((status == STATUS_PENDING) && cq->upcall_pending &&
> +	    ibcq->comp_handler) {
> +		ibcq->comp_handler(ibcq, ibcq->cq_context);
> +		cq->upcall_pending = false;
> +		hvnd_debug("CQ comp_handler called arm_sn=%d\n", cq->arm_sn);
> +	}
> +
> +	if ((status != STATUS_PENDING) && ibcq->comp_handler &&
> +	    ibcq->cq_context) {
> +		ibcq->comp_handler(ibcq, ibcq->cq_context);
> +		hvnd_error("CQ comp_handler called status=%x\n", status);
> +	}
> +}
> +
> +void hvnd_process_cq_event_complete(struct hvnd_ep_obj *ep_object,
> +					 int status)
> +{
> +	struct ib_cq *ibcq;
> +	struct hvnd_cq *cq;
> +	int ret;
> +
> +	cq = ep_object->cq;
> +	ibcq = &ep_object->cq->ibcq;
> +
> +	// call hte previous CQ complete
> +	if (cq->upcall_pending && ibcq->comp_handler) {
> +		ibcq->comp_handler(ibcq, ibcq->cq_context);
> +		cq->upcall_pending = false;
> +		hvnd_debug("CQ comp_handler called arm_sn=%d\n", cq->arm_sn);
> +	}
> +
> +	cq->upcall_pending = true;
> +	if (!ep_add_work_pending(ep_object))
> +		return;
> +
> +	ret = hvnd_notify_cq(ep_object->nd_dev,
> +			ep_object->cq,
> +			ND_CQ_NOTIFY_ANY,
> +			(u64)ep_object);
> +
> +	if (ret) {
> +		ep_del_work_pending(ep_object);
> +//		hvnd_manage_io_state(ep_object, true);
> +		hvnd_error("hvnd_notify_cq failed ret=%d\n", ret);
> +	}
> +
> +	if ((status != 0) && (status != STATUS_CANCELLED)) {
> +		if (ibcq->event_handler) {
> +			struct ib_event event;
> +
> +			event.device = ibcq->device;
> +			event.event = IB_EVENT_CQ_ERR;
> +			event.element.cq = ibcq;
> +			ibcq->event_handler(&event, ibcq->cq_context);
> +
> +			hvnd_warn("CQ event_handler called status=%x\n",
> +				  status);
> +		}
> +	}
> +}
> +
> +int init_cm_event(struct hvnd_ep_obj *ep_object, struct iw_cm_event *cm_event,
> +		  int event)
> +{
> +	struct sockaddr_in *laddr = (struct sockaddr_in *)&cm_event->local_addr;
> +	struct sockaddr_in *raddr = (struct sockaddr_in *)&cm_event->remote_addr;
> +	struct nd_read_limits rd_limits;
> +	union nd_sockaddr_inet local_addr;
> +	union nd_sockaddr_inet remote_addr;
> +	int ret;
> +
> +	/*
> +	 * Now get the local address.
> +	 */
> +	ret = hvnd_connector_get_local_addr(ep_object->nd_dev,
> +					    ep_object->uctx,
> +					    ep_object->ep_handle,
> +					    &local_addr);
> +
> +	if (ret) {
> +		hvnd_error("Connector get addr failed; ret: %d\n", ret);
> +		return ret;
> +	}
> +	/*
> +	 * Now get the remote address.
> +	 */
> +	ret = hvnd_connector_get_peer_addr(ep_object->nd_dev,
> +					   ep_object->uctx,
> +					   ep_object->ep_handle,
> +					   &remote_addr);
> +
> +	if (ret) {
> +		hvnd_error("Connector get peer addr failed; ret: %d\n", ret);
> +		return ret;
> +	}
> +
> +	/*
> +	 * Get other connection parameters.
> +	 */
> +
> +	ret = hvnd_connector_get_rd_limits(ep_object->nd_dev,
> +					   ep_object->uctx,
> +					   ep_object->ep_handle,
> +					   &rd_limits);
> +
> +	if (ret) {
> +		hvnd_error("Connector rd limits failed; ret: %d\n", ret);
> +		return ret;
> +	}
> +
> +	/*
> +	 * XXXKYS: Luke: What about the length of the priv data?
> +	 */
> +	ret = hvnd_connector_get_priv_data(ep_object->nd_dev,
> +					   ep_object->uctx,
> +					   ep_object->ep_handle,
> +					   ep_object->priv_data);
> +
> +	if (ret) {
> +		hvnd_error("Connector get priv data failed; ret: %d\n", ret);
> +		return ret;
> +	}
> +	/*
> +	 * Initialize CM structure.
> +	 */
> +	laddr->sin_addr.s_addr = local_addr.ipv4.sin_addr.s_addr;
> +	hvnd_debug("Local addr is %d\n", laddr->sin_addr.s_addr);
> +	laddr->sin_port = local_addr.ipv4.sin_port;
> +	laddr->sin_family = AF_INET;
> +
> +	raddr->sin_addr.s_addr = remote_addr.ipv4.sin_addr.s_addr;
> +	hvnd_debug("Remote addr is %d\n", raddr->sin_addr.s_addr);
> +	raddr->sin_port = remote_addr.ipv4.sin_port;
> +	raddr->sin_family = AF_INET;
> +
> +	// KYS; LUke: is it always 148 bytes?
> +	cm_event->private_data_len = MAX_PRIVATE_DATA_LEN;
> +	cm_event->private_data = ep_object->priv_data;
> +
> +	cm_event->ird = rd_limits.inbound;
> +	cm_event->ord = rd_limits.outbound;
> +	cm_event->event = event;
> +
> +	ep_object->ird = cm_event->ird;
> +	ep_object->ord = cm_event->ord;
> +
> +	return 0;
> +}
> +
> +static void hvnd_refuse_connection(struct hvnd_ep_obj *connector, int status)
> +{
> +	struct iw_cm_event cm_event;
> +
> +	memset(&cm_event, 0, sizeof(cm_event));
> +
> +	cm_event.event = IW_CM_EVENT_CONNECT_REPLY;
> +	cm_event.status = status;
> +
> +	hvnd_debug("returning status %d on connector %p\n", status, connector);
> +
> +	if (connector->cm_id && connector->cm_id->event_handler) {
> +		connector->cm_id->event_handler(connector->cm_id, &cm_event);
> +		connector->cm_id->rem_ref(connector->cm_id);
> +		connector->cm_state = hvnd_cm_connect_reply_refused;
> +	}
> +}
> +
> +void hvnd_process_events(struct work_struct *work)
> +{
> +	struct hvnd_work *wrk;
> +	struct nd_read_limits rd_limits;
> +	struct hvnd_ep_obj *ep_object;
> +	struct hvnd_ep_obj *parent;
> +	struct iw_cm_event cm_event;
> +	struct sockaddr_in *laddr = (struct sockaddr_in *)&cm_event.local_addr;
> +	struct sockaddr_in *raddr = (struct sockaddr_in *)&cm_event.remote_addr;
> +	struct ndv_packet_hdr_control_1 *ctrl_hdr;
> +	union nd_sockaddr_inet local_addr;
> +	union nd_sockaddr_inet remote_addr;
> +	struct pkt_nd_get_connection_listener *connection_pkt;
> +	struct iw_cm_id *cm_id = NULL;
> +	int status;
> +	int ioctl;
> +	int ret;
> +	char priv_data[MAX_PRIVATE_DATA_LEN];
> +	enum ibv_qp_state new_qp_state;
> +	struct incoming_pkt *incoming_pkt;
> +	unsigned long flags;
> +
> +	memset(&cm_event, 0, sizeof(cm_event));
> +	memset(&priv_data, 0, MAX_PRIVATE_DATA_LEN);
> +
> +
> +	wrk = container_of(work, struct hvnd_work, work);
> +
> +	/*
> +	 * Now call into the connection manager.
> +	 */
> +	ep_object = (struct hvnd_ep_obj *)wrk->callback_arg;
> +	parent = ep_object->parent;
> +
> +process_next:
> +	incoming_pkt = NULL;
> +	spin_lock_irqsave(&ep_object->incoming_pkt_list_lock, flags);
> +	if (!list_empty(&ep_object->incoming_pkt_list)) {
> +		incoming_pkt = list_first_entry(&ep_object->incoming_pkt_list,
> +						struct incoming_pkt,
> +						list_entry);
> +		list_del(&incoming_pkt->list_entry);
> +	}
> +	spin_unlock_irqrestore(&ep_object->incoming_pkt_list_lock, flags);
> +	if (incoming_pkt == NULL)
> +		return;
> +
> +	ctrl_hdr = (struct ndv_packet_hdr_control_1 *)incoming_pkt->pkt;
> +	status = ctrl_hdr->io_status;
> +	ioctl = ctrl_hdr->io_cntrl_code;
> +
> +	hvnd_debug("Process Events IOCTL is: %s; iostatus failure: %x in work queue\n",
> +		   hvnd_get_op_name(ioctl), status);
> +
> +	if (status != 0) {
> +		bool log_error = true;
> +
> +		if (ioctl == IOCTL_ND_CONNECTOR_NOTIFY_DISCONNECT &&
> +		    status == STATUS_DISCONNECTED) // expected
> +			log_error = false;
> +
> +		if (log_error)
> +			hvnd_warn("Process Events IOCTL is: %s; iostatus failure: %x\n",
> +				  hvnd_get_op_name(ioctl), status);
> +	}
> +
> +	cm_event.status = status;
> +
> +	switch (ep_object->type) {
> +	case ND_CONNECTOR:
> +		switch (ioctl) {
> +		case IOCTL_ND_LISTENER_GET_CONNECTION_REQUEST:
> +
> +			if (ep_object->parent != NULL) {
> +
> +				// Do nothing with this connection request if
> +				// listener is stopping
> +				if (!ep_add_work_pending(ep_object->parent))
> +					break;
> +
> +				cm_id = ep_object->parent->cm_id; //Listener
> +			}
> +
> +			connection_pkt = (struct pkt_nd_get_connection_listener *) ctrl_hdr;
> +
> +			if ((status == 0) || (status == STATUS_CANCELLED)) {
> +				hvnd_get_incoming_connections(ep_object->parent,
> +					ep_object->parent->nd_dev,
> +					ep_object->uctx);
> +			}
> +
> +			if (status)
> +				goto get_connection_request_done;
> +
> +			/*
> +			 * Now get the local address.
> +			 */
> +			ret = hvnd_connector_get_local_addr(ep_object->nd_dev,
> +						     ep_object->uctx,
> +						     ep_object->ep_handle,
> +						     &local_addr);
> +
> +			if (ret) {
> +				hvnd_error("Connector get addr failed; ret: %d\n",
> +					   ret);
> +				goto get_connection_request_done;
> +			}
> +			/*
> +			 * Now get the remote address.
> +			 */
> +			ret = hvnd_connector_get_peer_addr(ep_object->nd_dev,
> +						     ep_object->uctx,
> +						     ep_object->ep_handle,
> +						     &remote_addr);
> +
> +			if (ret) {
> +				hvnd_error("Connector get peer addr failed; ret: %d\n",
> +					   ret);
> +				goto get_connection_request_done;
> +			}
> +			/*
> +			 * Get other connection parameters.
> +			 */
> +
> +			ret = hvnd_connector_get_rd_limits(ep_object->nd_dev,
> +							   ep_object->uctx,
> +							   ep_object->ep_handle,
> +							   &rd_limits);
> +
> +			if (ret) {
> +				hvnd_error("Connector rd imits failed; ret: %d\n",
> +					   ret);
> +				goto get_connection_request_done;
> +			}
> +
> +			/*
> +			 * XXXKYS: Luke: What about the length of the priv data?
> +			 */
> +			ret = hvnd_connector_get_priv_data(
> +				ep_object->nd_dev, ep_object->uctx,
> +				ep_object->ep_handle, ep_object->priv_data);
> +
> +			if (ret) {
> +				hvnd_error("Connector get priv data failed; ret: %d\n",
> +					   ret);
> +				goto get_connection_request_done;
> +			}
> +
> +			cm_event.event = IW_CM_EVENT_CONNECT_REQUEST;
> +			cm_event.provider_data = (void *)ep_object;
> +
> +			laddr->sin_addr.s_addr = local_addr.ipv4.sin_addr.s_addr;
> +			hvnd_debug("Local addr is %d\n",
> +				   laddr->sin_addr.s_addr);
> +			laddr->sin_port = local_addr.ipv4.sin_port;
> +			laddr->sin_family = AF_INET;
> +
> +			raddr->sin_addr.s_addr = remote_addr.ipv4.sin_addr.s_addr;
> +			hvnd_debug("Remote addr is %d\n",
> +				   raddr->sin_addr.s_addr);
> +			raddr->sin_port = remote_addr.ipv4.sin_port;
> +			raddr->sin_family = AF_INET;
> +
> +			// KYS; LUke: is it always 148 bytes?
> +			cm_event.private_data_len = MAX_PRIVATE_DATA_LEN;
> +			cm_event.private_data = ep_object->priv_data;
> +
> +			cm_event.ird = rd_limits.inbound;
> +			cm_event.ord = rd_limits.outbound;
> +
> +			ep_object->ird = cm_event.ird;
> +			ep_object->ord = cm_event.ord;
> +
> +
> +			if ((cm_id != NULL) && cm_id->event_handler) {
> +				cm_id->event_handler(cm_id, &cm_event);
> +				ep_object->cm_state = hvnd_cm_connect_request_sent;
> +			}
> +
> +get_connection_request_done:
> +			if (ep_object->parent != NULL)
> +				ep_del_work_pending(ep_object->parent);
> +			break;
> +
> +		case IOCTL_ND_CONNECTOR_CONNECT:
> +
> +			cm_event.event = IW_CM_EVENT_CONNECT_REPLY;
> +			if (status == STATUS_TIMEOUT &&
> +			    ep_object->connector_connect_retry < 3) {
> +				//TIMEOUT retry
> +
> +				if (!ep_add_work_pending(ep_object))
> +					goto refuse_connection;
> +
> +				hvnd_warn("Connector connect timed out, reconnecting... retry count: %d\n",
> +					  ep_object->connector_connect_retry);
> +				ep_object->connector_connect_retry++;
> +				ret = hvnd_send_ioctl_pkt(ep_object->nd_dev,
> +					&ep_object->connector_connect_pkt.hdr,
> +					sizeof(ep_object->connector_connect_pkt),
> +					(u64)&ep_object->connector_connect_pkt);
> +
> +				if (ret) {
> +					hvnd_error("Connector on time out failed: %d\n",
> +						   ret);
> +					ep_del_work_pending(ep_object);
> +					goto refuse_connection;
> +				}
> +				break;
> +			}
> +
> +refuse_connection:
> +			if (status) {
> +				cm_event.status = -ECONNREFUSED;
> +				if (status == STATUS_TIMEOUT)
> +					cm_event.status = -ETIMEDOUT;
> +
> +				hvnd_refuse_connection(ep_object,
> +						       cm_event.status);
> +				break;
> +			}
> +
> +			hvnd_debug("ACTIVE Connection ACCEPTED\n");
> +			ret = init_cm_event(ep_object, &cm_event,
> +					    IW_CM_EVENT_CONNECT_REPLY);
> +			if (ret) {
> +				hvnd_error("init_cm_event failed ret=%d\n",
> +					   ret);
> +				goto process_done;
> +			}
> +
> +			ret = hvnd_connector_complete_connect(ep_object->nd_dev,
> +						ep_object->uctx,
> +						ep_object->ep_handle,
> +						&new_qp_state);
> +			if (ret) {
> +				hvnd_error("connector_complete failed\n");
> +				goto process_done;
> +			}
> +
> +			cm_event.provider_data = (void *)ep_object;
> +
> +			if ((ep_object->cm_id) &&
> +				(ep_object->cm_id->event_handler)) {
> +				ep_object->cm_id->event_handler(
> +					ep_object->cm_id, &cm_event);
> +				ep_object->cm_state = hvnd_cm_connect_reply_sent;
> +			}
> +			/*
> +			 * Rquest notification if the other end
> +			 * were to disconnect.
> +			 */
> +			if (!ep_add_work_pending(ep_object))
> +				goto process_done;
> +
> +			ret = hvnd_connector_notify_disconnect(
> +				ep_object->nd_dev, ep_object->uctx,
> +				ep_object->ep_handle, ep_object);
> +
> +			if (ret) {
> +				ep_del_work_pending(ep_object);
> +				hvnd_error("Connector notify disconnect failed; ret: %d\n",
> +					   ret);
> +			}
> +
> +			break;
> +
> +		case IOCTL_ND_CONNECTOR_NOTIFY_DISCONNECT:
> +			hvnd_process_notify_disconnect(ep_object, status);
> +			break;
> +
> +
> +		default:
> +			hvnd_error("Unknown Connector IOCTL\n");
> +			break;
> +		}
> +		break;
> +	default:
> +		hvnd_error("Unknown endpoint object\n");
> +		break;
> +	}
> +process_done:
> +	kfree(incoming_pkt);
> +	ep_del_work_pending(ep_object);
> +
> +	goto process_next;
> +}
> +
> +
> +static struct hvnd_ep_obj *hvnd_setup_ep(struct iw_cm_id *cm_id, int ep_type,
> +					struct hvnd_dev *nd_dev,
> +					struct hvnd_ucontext *uctx)
> +{
> +	struct hvnd_ep_obj *ep_object;
> +	int ret;
> +
> +	ep_object = kzalloc(sizeof(struct hvnd_ep_obj), GFP_KERNEL);
> +
> +	if (!ep_object)
> +		return NULL;
> +
> +	ret = hvnd_init_ep(ep_object, cm_id, ep_type, nd_dev, uctx);
> +
> +	if (ret) {
> +		hvnd_error("hvnd_init_ep failed ret=%d\n", ret);
> +		kfree(ep_object);
> +		return NULL;
> +	}
> +
> +	return ep_object;
> +}
> +
> +/*
> + * return value:
> + * true: I/O state is stopped, we should not do upcall
> + * flase: I/O state is running and normal
> + */
> +#if 0
> +static bool hvnd_manage_io_state(struct hvnd_ep_obj *ep, bool failure)
> +{
> +	unsigned long flags;
> +
> +	spin_lock_irqsave(&ep->ep_lk, flags);
> +	if (ep->to_be_destroyed) {
> +		hvnd_warn("ep being destroyed\n");
> +		if (ep->io_outstanding) {
> +			hvnd_warn("ep being destroyed i/O pending waking up on %p\n",
> +				  &ep->block_event);
> +			complete(&ep->block_event);
> +			ep->io_outstanding = false;
> +		}
> +		spin_unlock_irqrestore(&ep->ep_lk, flags);
> +		return true;
> +	}
> +	if (!failure)
> +		ep->io_outstanding = true;
> +	spin_unlock_irqrestore(&ep->ep_lk, flags);
> +	return false;
> +}
> +#endif
> +
> +static int hvnd_get_incoming_connections(struct hvnd_ep_obj *listener,
> +					 struct hvnd_dev *nd_dev,
> +					 struct hvnd_ucontext *uctx)
> +{
> +	struct hvnd_ep_obj *connector;
> +	u64 connector_handle;
> +	int ret;
> +
> +	/*
> +	 * First handle the protocol for
> +	 * destruction - outstanding I/O.
> +	 */
> +
> +//	if (hvnd_manage_io_state(listener, false))
> +//		return 0;
> +	/*
> +	 * Create a connector.
> +	 */
> +	connector = hvnd_setup_ep(listener->cm_id, ND_CONNECTOR, nd_dev, uctx);
> +	if (!connector) {
> +		hvnd_error("hvnd_setup_ep failed\n");
> +		ret = -ENOMEM;
> +		goto con_alloc_err;
> +	}
> +
> +	ret = hvnd_cr_connector(nd_dev, uctx,
> +				&connector_handle);
> +	if (ret) {
> +		hvnd_error("hvnd_cr_connector failed ret=%d\n", ret);
> +		goto con_cr_err;
> +	}
> +
> +	/*
> +	 * Now get a connection if one is pending.
> +	 */
> +	connector->ep_handle = connector_handle;
> +	connector->parent = listener;
> +
> +	if (!ep_add_work_pending(connector))
> +		goto get_connection_err;
> +
> +	ret = hvnd_get_connection_listener(nd_dev, uctx,
> +					listener->ep_handle,
> +					connector_handle,
> +					(u64)connector);
> +
> +	if (ret) {
> +		hvnd_debug("listener_get_connection failed\n");
> +		ep_del_work_pending(connector);
> +		goto get_connection_err;
> +	}
> +
> +	hvnd_acquire_uctx_ref(uctx);
> +	listener->outstanding_handle = connector_handle;
> +	listener->outstanding_ep = connector;
> +	hvnd_debug("outstanding handle is %p\n", (void *)connector_handle);
> +	return 0;
> +
> +get_connection_err:
> +	hvnd_free_handle(nd_dev, uctx,
> +			connector_handle,
> +			IOCTL_ND_CONNECTOR_FREE);
> +
> +con_cr_err:
> +	kfree(connector);
> +con_alloc_err:
> +//	hvnd_manage_io_state(listener, true);
> +	return ret;
> +}
> +
> +static int hvnd_create_listen(struct iw_cm_id *cm_id, int backlog)
> +{
> +	int ret = 0;
> +	struct hvnd_dev *nd_dev;
> +	struct hvnd_ucontext *uctx;
> +	struct hvnd_ep_obj *ep_object;
> +	union nd_sockaddr_inet addr;
> +	union nd_sockaddr_inet local_addr;
> +	u64 listener_handle;
> +	struct sockaddr_in *laddr = (struct sockaddr_in *)&cm_id->local_addr;
> +	union nd_sockaddr_inet og_addr;
> +
> +
> +	nd_dev = to_nd_dev(cm_id->device);
> +	uctx = get_uctx(nd_dev, current_pid());
> +	hvnd_debug("uctx is %p; pid is %d\n", uctx, current_pid());
> +
> +	if (cm_id->local_addr.ss_family != AF_INET) {
> +		hvnd_error("cm_id->local_addr.ss_family =%d not AF_INET\n",
> +			   cm_id->local_addr.ss_family);
> +		return -ENOSYS;
> +	}
> +
> +	/*
> +	 * If the local address is LOOPBACK or INADDR_ANY, get an an address
> +	 * to bind the listener. For now, just get the first address
> +	 * available.
> +	 */
> +
> +	if (IN_LOOPBACK(ntohl(laddr->sin_addr.s_addr)) ||
> +		(laddr->sin_addr.s_addr == INADDR_ANY)) {
> +
> +		hvnd_debug("need to get an address\n");
> +		ret = hvnd_get_outgoing_rdma_addr(nd_dev, uctx, &og_addr);
> +
> +		if (ret) {
> +			hvnd_error("failed to get the og address\n");
> +			return ret;
> +		}
> +
> +		laddr->sin_addr.s_addr = og_addr.ipv4.sin_addr.s_addr;
> +	}
> +
> +	cm_id->add_ref(cm_id);
> +
> +	ep_object = hvnd_setup_ep(cm_id, ND_LISTENER, nd_dev, uctx);
> +
> +	if (!ep_object) {
> +		hvnd_error("hvnd_setup_ep returned NULL\n");
> +		goto alloc_err;
> +	}
> +
> +	ret = hvnd_cr_listener(nd_dev, uctx,
> +				&listener_handle);
> +	if (ret) {
> +		hvnd_error("hvnd_cr_listener failed ret=%d\n", ret);
> +		goto cr_err;
> +	}
> +
> +	ep_object->ep_handle = listener_handle;
> +
> +	cm_id->provider_data = ep_object;
> +
> +	/*
> +	 * Now bind the listener.
> +	 * IPV4 support only.
> +	 */
> +	memcpy(&addr.ipv4, laddr, sizeof(struct sockaddr_in));
> +
> +	ret = hvnd_bind_listener(nd_dev, uctx,
> +				listener_handle,
> +				&addr);
> +	if (ret) {
> +		hvnd_error("hvnd_bind_listener failed ret=%d\n", ret);
> +		goto bind_err;
> +	}
> +
> +	/*
> +	 * Now get the local address.
> +	 */
> +	ret = hvnd_get_addr_listener(nd_dev, uctx,
> +					listener_handle,
> +					&local_addr);
> +	if (ret) {
> +		hvnd_error("hvnd_get_addr_listener failed ret=%d\n", ret);
> +		goto bind_err;
> +	}
> +
> +	/*
> +	 * Now put the listener in the listen mode.
> +	 */
> +
> +	ret = hvnd_listen_listener(nd_dev, uctx,
> +				listener_handle,
> +				backlog);
> +
> +	if (ret) {
> +		hvnd_error("hvnd_listen_listener failed ret=%d\n", ret);
> +		goto bind_err;
> +	}
> +
> +
> +	/*
> +	 * Now get a pending connection if one is pending.
> +	 */
> +	ret = hvnd_get_incoming_connections(ep_object, nd_dev, uctx);
> +	if (ret) {
> +		hvnd_error("hvnd_get_incoming_connections failed ret=%d\n",
> +			   ret);
> +		goto bind_err;
> +	}
> +
> +	hvnd_acquire_uctx_ref(uctx);
> +	hvnd_debug("cm_id=%p\n", cm_id);
> +	return 0;
> +
> +bind_err:
> +	hvnd_free_handle(nd_dev, uctx,
> +			listener_handle,
> +			IOCTL_ND_LISTENER_FREE);
> +cr_err:
> +	kfree(ep_object);
> +alloc_err:
> +	cm_id->provider_data = NULL;
> +	cm_id->rem_ref(cm_id);
> +	return ret;
> +}
> +
> +static int hvnd_destroy_listen(struct iw_cm_id *cm_id)
> +{
> +	struct hvnd_dev *nd_dev;
> +	struct hvnd_ucontext *uctx;
> +	struct hvnd_ep_obj *ep_object;
> +
> +	nd_dev = to_nd_dev(cm_id->device);
> +
> +	ep_object = (struct hvnd_ep_obj *)cm_id->provider_data;
> +
> +	hvnd_debug("uctx is %p\n", ep_object->uctx);
> +	hvnd_debug("Destroying Listener cm_id=%p\n", cm_id);
> +	uctx = ep_object->uctx;
> +
> +	// make sure there is nothing in progress on this ep
> +	ep_stop(ep_object);
> +
> +	hvnd_free_handle(nd_dev, uctx,
> +			ep_object->ep_handle,
> +			IOCTL_ND_LISTENER_FREE);
> +
> +	/*
> +	 * We may have an ouststanding connector for
> +	 * incoming connection requests; clean it up.
> +	 */
> +
> +	if (ep_object->outstanding_handle != 0) {
> +
> +		// make sure there is nothing in progress on this ep
> +		ep_stop(ep_object->outstanding_ep);
> +
> +		hvnd_free_handle(nd_dev, uctx,
> +				ep_object->outstanding_handle,
> +				IOCTL_ND_CONNECTOR_FREE);
> +
> +
> +		hvnd_drop_uctx_ref(nd_dev, uctx);
> +		hvnd_destroy_ep(ep_object->outstanding_ep);
> +	}
> +
> +	/*
> +	 * Now everything should have stopped
> +	 */
> +
> +	cm_id->rem_ref(cm_id);
> +	hvnd_destroy_ep(ep_object);
> +	cm_id->provider_data = NULL;
> +	hvnd_drop_uctx_ref(nd_dev, uctx);
> +
> +	hvnd_debug("cm_id=%p\n", cm_id);
> +	return 0;
> +}
> +
> +static void hvnd_qp_add_ref(struct ib_qp *ibqp)
> +{
> +	struct hvnd_qp *qp = to_nd_qp(ibqp);
> +
> +	atomic_inc(&qp->refcnt);
> +}
> +
> +void hvnd_qp_rem_ref(struct ib_qp *ibqp)
> +{
> +	struct hvnd_qp *qp = to_nd_qp(ibqp);
> +
> +	if (atomic_dec_and_test(&qp->refcnt))
> +		wake_up(&qp->wait);
> +}
> +
> +static DEVICE_ATTR(hw_rev, 0444, hvnd_show_rev, NULL);
> +static DEVICE_ATTR(fw_ver, 0444, hvnd_show_fw_ver, NULL);
> +static DEVICE_ATTR(hca_type, 0444, hvnd_show_hca, NULL);
> +static DEVICE_ATTR(board_id, 0444, hvnd_show_board, NULL);
> +
> +static struct device_attribute *hvnd_class_attributes[] = {
> +	&dev_attr_hw_rev,
> +	&dev_attr_fw_ver,
> +	&dev_attr_hca_type,
> +	&dev_attr_board_id,
> +};
> +
> +int hvnd_register_device(struct hvnd_dev *dev, char *ip_addr, char *mac_addr)
> +{
> +	int ret;
> +
> +	dev->ibdev.owner = THIS_MODULE;
> +	dev->device_cap_flags = IB_DEVICE_LOCAL_DMA_LKEY | IB_DEVICE_MEM_WINDOW;
> +	dev->ibdev.local_dma_lkey = 0;
> +	dev->ibdev.uverbs_cmd_mask =
> +	    (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
> +	    (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
> +	    (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
> +	    (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
> +	    (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
> +	    (1ull << IB_USER_VERBS_CMD_REG_MR) |
> +	    (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
> +	    (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
> +	    (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
> +	    (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
> +	    (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) |
> +	    (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
> +	    (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
> +	    (1ull << IB_USER_VERBS_CMD_QUERY_QP) |
> +	    (1ull << IB_USER_VERBS_CMD_POLL_CQ) |
> +	    (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
> +	    (1ull << IB_USER_VERBS_CMD_POST_SEND) |
> +	    (1ull << IB_USER_VERBS_CMD_POST_RECV);
> +	dev->ibdev.node_type = RDMA_NODE_RNIC;
> +	memcpy(dev->ibdev.node_desc, HVND_NODE_DESC, sizeof(HVND_NODE_DESC));
> +	memcpy(&dev->ibdev.node_guid, mac_addr, 6);
> +	dev->ibdev.phys_port_cnt = 1; //dev->nports;
> +	dev->ibdev.num_comp_vectors = 1;
> +	dev->ibdev.query_device = hvnd_query_device;
> +	dev->ibdev.query_port = hvnd_query_port;
> +	dev->ibdev.get_link_layer = hvnd_get_link_layer;
> +	dev->ibdev.query_pkey = hvnd_query_pkey;
> +	dev->ibdev.query_gid = hvnd_query_gid;
> +	dev->ibdev.alloc_ucontext = hvnd_alloc_ucontext;
> +	dev->ibdev.dealloc_ucontext = hvnd_dealloc_ucontext;
> +	dev->ibdev.mmap = hvnd_mmap;
> +	dev->ibdev.alloc_pd = hvnd_allocate_pd;
> +	dev->ibdev.dealloc_pd = hvnd_deallocate_pd;
> +	dev->ibdev.create_ah = hvnd_ah_create;
> +	dev->ibdev.destroy_ah = hvnd_ah_destroy;
> +	dev->ibdev.create_qp = hvnd_ib_create_qp;
> +	dev->ibdev.modify_qp = hvnd_ib_modify_qp;
> +	dev->ibdev.query_qp = hvnd_ib_query_qp;
> +	dev->ibdev.destroy_qp = hvnd_destroy_qp;
> +	dev->ibdev.create_cq = hvnd_ib_create_cq;
> +	dev->ibdev.destroy_cq = hvnd_ib_destroy_cq;
> +	dev->ibdev.resize_cq = hvnd_resize_cq;
> +	dev->ibdev.poll_cq = hvnd_poll_cq;
> +	dev->ibdev.get_dma_mr = hvnd_get_dma_mr;
> +	dev->ibdev.reg_user_mr = hvnd_reg_user_mr;
> +	dev->ibdev.dereg_mr = hvnd_dereg_mr;
> +	dev->ibdev.alloc_mw = hvnd_alloc_mw;
> +	dev->ibdev.dealloc_mw = hvnd_dealloc_mw;
> +	dev->ibdev.attach_mcast = hvnd_multicast_attach;
> +	dev->ibdev.detach_mcast = hvnd_multicast_detach;
> +	dev->ibdev.process_mad = hvnd_process_mad;
> +	dev->ibdev.req_notify_cq = hvnd_arm_cq;
> +	dev->ibdev.post_send = hvnd_post_send;
> +	dev->ibdev.post_recv = hvnd_post_receive;
> +	dev->ibdev.uverbs_abi_ver = MLX4_IB_UVERBS_ABI_VERSION;
> +
> +	dev->ibdev.get_port_immutable = hvnd_get_port_immutable;
> +
> +	//DMA ops for mapping all possible addresses
> +	dev->ibdev.dev.parent = &(dev->hvdev->device);
> +	dev->ibdev.dev.dma_ops = &vmbus_dma_ops;
> +	dev->ibdev.dev.dma_mask = (u64 *) DMA_BIT_MASK(64);
> +	dev->ibdev.dev.coherent_dma_mask = DMA_BIT_MASK(64);
> +
> +	dev->ibdev.iwcm = kmalloc(sizeof(struct iw_cm_verbs), GFP_KERNEL);
> +	if (!dev->ibdev.iwcm)
> +		return -ENOMEM;
> +
> +	dev->ibdev.iwcm->connect = hvnd_connect;
> +	dev->ibdev.iwcm->accept = hvnd_accept_cr;
> +	dev->ibdev.iwcm->reject = hvnd_reject_cr;
> +	dev->ibdev.iwcm->create_listen = hvnd_create_listen;
> +	dev->ibdev.iwcm->destroy_listen = hvnd_destroy_listen;
> +	dev->ibdev.iwcm->add_ref = hvnd_qp_add_ref;
> +	dev->ibdev.iwcm->rem_ref = hvnd_qp_rem_ref;
> +	dev->ibdev.iwcm->get_qp = hvnd_get_qp;
> +
> +	strlcpy(dev->ibdev.name, "mlx4_%d", IB_DEVICE_NAME_MAX);
> +	ret = ib_register_device(&dev->ibdev, NULL);
> +	if (ret) {
> +		hvnd_error("ib_register_device failed ret=%d\n", ret);
> +		goto bail1;
> +	}
> +
> +#if 0
> +	for (i = 0; i < ARRAY_SIZE(hvnd_class_attributes); ++i) {
> +		ret = device_create_file(&dev->ibdev.dev,
> +					 hvnd_class_attributes[i]);
> +		if (ret) {
> +			hvnd_error("device_create_file failed ret=%d\n", ret);
> +			goto bail2;
> +		}
> +	}
> +#endif
> +
> +	dev->ib_active = true;
> +	return 0;
> +//bail2:
> +//	ib_unregister_device(&dev->ibdev);
> +bail1:
> +	kfree(dev->ibdev.iwcm);
> +	return ret;
> +}
> +
> +void hvnd_unregister_device(struct hvnd_dev *dev)
> +{
> +	int i;
> +
> +	for (i = 0; i < ARRAY_SIZE(hvnd_class_attributes); ++i)
> +		device_remove_file(&dev->ibdev.dev,
> +				   hvnd_class_attributes[i]);
> +	ib_unregister_device(&dev->ibdev);
> +	kfree(dev->ibdev.iwcm);
> +	ib_dealloc_device((struct ib_device *)dev);
> +}
> +
> +static int hvnd_try_bind_nic(unsigned char *mac, __be32 ip)
> +{
> +	int ret;
> +	struct hvnd_dev *nd_dev = g_nd_dev;
> +
> +	mutex_lock(&nd_dev->bind_mutex);
> +	if (nd_dev->bind_complete) {
> +		mutex_unlock(&nd_dev->bind_mutex);
> +		return 1;
> +	}
> +
> +	memcpy(nd_dev->mac_addr, mac, 6);
> +	*(__be32 *)(nd_dev->ip_addr) = ip;
> +
> +	/*
> +	 * Bind the NIC.
> +	 */
> +	hvnd_info("trying to bind to IP %pI4 MAC %pM\n",
> +		  nd_dev->ip_addr, nd_dev->mac_addr);
> +	ret = hvnd_bind_nic(nd_dev, false, nd_dev->ip_addr, nd_dev->mac_addr);
> +	if (ret || nd_dev->bind_pkt.pkt_hdr.status) {
> +		mutex_unlock(&nd_dev->bind_mutex);
> +		return 1;
> +	}
> +
> +	/* if we reach here, this means bind_nic is a success */
> +	hvnd_error("successfully bound to IP %pI4 MAC %pM\n",
> +		   nd_dev->ip_addr, nd_dev->mac_addr);
> +	complete(&nd_dev->addr_set);
> +	nd_dev->bind_complete = 1;
> +	mutex_unlock(&nd_dev->bind_mutex);
> +
> +	ret = hvnd_register_device(nd_dev, nd_dev->ip_addr, nd_dev->mac_addr);
> +
> +	if (!ret)
> +		return 0;
> +
> +	hvnd_error("hvnd_register_device failed ret=%d\n", ret);
> +
> +	/* roll back all allocated resources on error */
> +	iounmap(nd_dev->mmio_virt);
> +	release_resource(&nd_dev->mmio_resource);
> +
> +	vmbus_close(nd_dev->hvdev->channel);
> +	ib_dealloc_device((struct ib_device *)nd_dev);
> +
> +	return 1;
> +}
> +
> +static void hvnd_inetaddr_event_up(unsigned long event, struct in_ifaddr *ifa)
> +{
> +	hvnd_try_bind_nic(ifa->ifa_dev->dev->dev_addr, ifa->ifa_address);
> +}
> +
> +static int hvnd_inetaddr_event(struct notifier_block *notifier,
> +			       unsigned long event, void *ptr)
> +{
> +	struct in_ifaddr *ifa = ptr;
> +
> +	switch (event) {
> +	case NETDEV_UP:
> +		hvnd_inetaddr_event_up(event, ifa);
> +		break;
> +	default:
> +		hvnd_debug("Received inetaddr event %lu\n", event);
> +	}
> +
> +	return NOTIFY_DONE;
> +}
> +
> +static struct notifier_block hvnd_inetaddr_notifier = {
> +	.notifier_call = hvnd_inetaddr_event,
> +};
> +
> +static int start_bind_nic(void)
> +{
> +	struct net_device *dev;
> +	struct in_device *idev;
> +	struct in_ifaddr *ifa;
> +
> +	register_inetaddr_notifier(&hvnd_inetaddr_notifier);
> +
> +	rtnl_lock();
> +	for_each_netdev(&init_net, dev) {
> +		idev = in_dev_get(dev);
> +		if (!idev)
> +			continue;
> +		for (ifa = (idev)->ifa_list;
> +		     ifa && !(ifa->ifa_flags&IFA_F_SECONDARY);
> +		     ifa = ifa->ifa_next) {
> +			hvnd_try_bind_nic(dev->dev_addr, ifa->ifa_address);
> +		}
> +	}
> +	rtnl_unlock();
> +
> +	return 0;
> +}
> +
> +static int hvnd_probe(struct hv_device *dev,
> +		      const struct hv_vmbus_device_id *dev_id)
> +{
> +	struct hvnd_dev *nd_dev;
> +	int ret = 0;
> +
> +	hvnd_debug("hvnd starting\n");
> +
> +	nd_dev = (struct hvnd_dev *)ib_alloc_device(sizeof(struct hvnd_dev));
> +	if (!nd_dev) {
> +		ret = -ENOMEM;
> +		goto err_out0;
> +	}
> +
> +	nd_dev->hvdev = dev;
> +	/*
> +	 * We are going to masquerade as MLX4 device;
> +	 * Set the vendor and device ID accordingly.
> +	 */
> +	dev->vendor_id = 0x15b3; //Mellanox
> +	dev->device_id = 0x1003; //Mellanox HCA
> +	INIT_LIST_HEAD(&nd_dev->listentry);
> +	spin_lock_init(&nd_dev->uctxt_lk);
> +	nd_dev->ib_active = false;
> +
> +	/*
> +	 * Initialize the state for the id table.
> +	 */
> +	spin_lock_init(&nd_dev->id_lock);
> +	idr_init(&nd_dev->cqidr);
> +	idr_init(&nd_dev->qpidr);
> +	idr_init(&nd_dev->mmidr);
> +	idr_init(&nd_dev->irpidr);
> +	idr_init(&nd_dev->uctxidr);
> +
> +	atomic_set(&nd_dev->open_cnt, 0);
> +
> +	sema_init(&nd_dev->query_pkt_sem, 1);
> +
> +	ret = vmbus_open(dev->channel, HVND_RING_SZ, HVND_RING_SZ, NULL, 0,
> +			 hvnd_callback, dev);
> +
> +	if (ret) {
> +		hvnd_error("vmbus_open failed ret=%d\n", ret);
> +		goto err_out1;
> +	}
> +
> +	hv_set_drvdata(dev, nd_dev);
> +
> +	ret = hvnd_negotiate_version(nd_dev);
> +
> +	if (ret) {
> +		hvnd_error("hvnd_negotiate_version failed ret=%d\n", ret);
> +		goto err_out2;
> +	}
> +
> +	/*
> +	 * Register resources with the host.
> +	 */
> +	ret = hvnd_init_resources(nd_dev);
> +	if (ret) {
> +		hvnd_error("hvnd_init_resources failed ret=%d\n", ret);
> +		goto err_out2;
> +	}
> +
> +	/*
> +	 * Try to bind every NIC to ND channel,
> +	 * ND host will only return success for the correct one
> +	 */
> +	nd_dev->bind_complete = 0;
> +	mutex_init(&nd_dev->bind_mutex);
> +	init_completion(&nd_dev->addr_set);
> +
> +	g_nd_dev = nd_dev;
> +	start_bind_nic();
> +
> +	return 0;
> +
> +err_out2:
> +	vmbus_close(dev->channel);
> +
> +err_out1:
> +	ib_dealloc_device((struct ib_device *)nd_dev);
> +
> +err_out0:
> +	return ret;
> +}
> +
> +static int hvnd_remove(struct hv_device *dev)
> +{
> +	struct hvnd_dev *nd_dev = hv_get_drvdata(dev);
> +
> +	unregister_inetaddr_notifier(&hvnd_inetaddr_notifier);
> +	hvnd_bind_nic(nd_dev, true, nd_dev->ip_addr, nd_dev->mac_addr);
> +	hvnd_unregister_device(nd_dev);
> +	vmbus_close(dev->channel);
> +	iounmap(nd_dev->mmio_virt);
> +	release_resource(&nd_dev->mmio_resource);
> +	return 0;
> +}
> +
> +static const struct hv_vmbus_device_id id_table[] = {
> +	/* VMBUS RDMA class guid */
> +	/* 8c2eaf3d-32a7-4b09-ab99-bd1f1c86b501 */
> +	{ HV_ND_GUID, },
> +	{ },
> +};
> +
> +MODULE_DEVICE_TABLE(vmbus, id_table);
> +
> +static  struct hv_driver hvnd_drv = {
> +	.name = "hv_guest_rdma",
> +	.id_table = id_table,
> +	.probe =  hvnd_probe,
> +	.remove =  hvnd_remove,
> +};
> +
> +
> +static int __init init_hvnd_drv(void)
> +{
> +
> +	pr_info("Registered HyperV networkDirect Driver\n");
> +	hvnd_addr_init();
> +	return vmbus_driver_register(&hvnd_drv);
> +}
> +
> +static void exit_hvnd_drv(void)
> +{
> +	pr_info("De-Registered HyperV networkDirect Driver\n");
> +	hvnd_addr_deinit();
> +	vmbus_driver_unregister(&hvnd_drv);
> +}
> +
> +
> +module_init(init_hvnd_drv);
> +module_exit(exit_hvnd_drv);
> +
> +MODULE_DESCRIPTION("Hyper-V NetworkDirect Driver");
> +MODULE_LICENSE("GPL");
> +MODULE_VERSION("4.1.3");
> diff --git a/drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142.0/user.h b/drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142.0/user.h
> new file mode 100644
> index 000000000000..07e6769ef43b
> --- /dev/null
> +++ b/drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142.0/user.h
> @@ -0,0 +1,107 @@
> +/*
> + * Copyright (c) 2007 Cisco Systems, Inc. All rights reserved.
> + * Copyright (c) 2007, 2008 Mellanox Technologies. All rights reserved.
> + *
> + * This software is available to you under a choice of one of two
> + * licenses.  You may choose to be licensed under the terms of the GNU
> + * General Public License (GPL) Version 2, available from the file
> + * COPYING in the main directory of this source tree, or the
> + * OpenIB.org BSD license below:
> + *
> + *     Redistribution and use in source and binary forms, with or
> + *     without modification, are permitted provided that the following
> + *     conditions are met:
> + *
> + *      - Redistributions of source code must retain the above
> + *        copyright notice, this list of conditions and the following
> + *        disclaimer.
> + *
> + *      - Redistributions in binary form must reproduce the above
> + *        copyright notice, this list of conditions and the following
> + *        disclaimer in the documentation and/or other materials
> + *        provided with the distribution.
> + *
> + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
> + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
> + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
> + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
> + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
> + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
> + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
> + * SOFTWARE.
> + */
> +
> +#ifndef MLX4_IB_USER_H
> +#define MLX4_IB_USER_H
> +
> +#include <linux/types.h>
> +
> +/*
> + * Increment this value if any changes that break userspace ABI
> + * compatibility are made.
> + */
> +
> +#define MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION	3
> +#define MLX4_IB_UVERBS_ABI_VERSION		4
> +
> +/*
> + * Make sure that all structs defined in this file remain laid out so
> + * that they pack the same way on 32-bit and 64-bit architectures (to
> + * avoid incompatibility between 32-bit userspace and 64-bit kernels).
> + * In particular do not use pointer types -- pass pointers in __u64
> + * instead.
> + */
> +
> +struct mlx4_ib_alloc_ucontext_resp_v3 {
> +	__u32	qp_tab_size;
> +	__u16	bf_reg_size;
> +	__u16	bf_regs_per_page;
> +};
> +
> +struct mlx4_ib_alloc_ucontext_resp {
> +	__u32	dev_caps;
> +	__u32	qp_tab_size;
> +	__u16	bf_reg_size;
> +	__u16	bf_regs_per_page;
> +	__u32	cqe_size;
> +};
> +
> +struct mlx4_ib_alloc_pd_resp {
> +	__u32	pdn;
> +	__u32	reserved;
> +};
> +
> +struct mlx4_ib_create_cq {
> +	__u64	buf_addr;
> +	__u64	db_addr;
> +};
> +
> +struct mlx4_ib_create_cq_resp {
> +	__u32	cqn;
> +	__u32	reserved;
> +};
> +
> +struct mlx4_ib_resize_cq {
> +	__u64	buf_addr;
> +};
> +
> +struct mlx4_ib_create_srq {
> +	__u64	buf_addr;
> +	__u64	db_addr;
> +};
> +
> +struct mlx4_ib_create_srq_resp {
> +	__u32	srqn;
> +	__u32	reserved;
> +};
> +
> +struct mlx4_ib_create_qp {
> +	__u64	buf_addr;
> +	__u64	db_addr;
> +	__u8	log_sq_bb_count;
> +	__u8	log_sq_stride;
> +	__u8	sq_no_prefetch;
> +	__u8	reserved[5];
> +};
> +
> +#endif /* MLX4_IB_USER_H */
> diff --git a/drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142.0/vmbus_rdma.c b/drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142.0/vmbus_rdma.c
> new file mode 100644
> index 000000000000..daf68dcccb1b
> --- /dev/null
> +++ b/drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142.0/vmbus_rdma.c
> @@ -0,0 +1,3074 @@
> +/*
> + * Copyright (c) 2014, Microsoft Corporation.
> + *
> + * Author:
> + *   K. Y. Srinivasan <kys@microsoft.com>
> + *
> + * This program is free software; you can redistribute it and/or modify it
> + * under the terms of the GNU General Public License version 2 as published
> + * by the Free Software Foundation.
> + *
> + * This program is distributed in the hope that it will be useful, but
> + * WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
> + * NON INFRINGEMENT.  See the GNU General Public License for more
> + * details.
> + *
> + * Bug fixes/enhancements: Long Li <longli@microsoft.com>
> + */
> +
> +#include <linux/completion.h>
> +#include <linux/module.h>
> +#include <linux/errno.h>
> +#include <linux/hyperv.h>
> +#include <linux/efi.h>
> +#include <linux/slab.h>
> +#include <linux/cred.h>
> +#include <linux/sched.h>
> +#include <linux/types.h>
> +#include <linux/scatterlist.h>
> +#include <rdma/ib_umem.h>
> +#include <rdma/ib_user_verbs.h>
> +#include <asm-generic/delay.h>
> +
> +#include "vmbus_rdma.h"
> +
> +/*
> + * We only have a single rdma device on the host;
> + * have a single receive buffer.
> + */
> +
> +
> +static char hvnd_recv_buffer[PAGE_SIZE * 4];
> +
> +static atomic_t irp_local_hdl;
> +
> +char *hvnd_get_op_name(int ioctl)
> +{
> +	switch (ioctl) {
> +	case IOCTL_ND_PROVIDER_INIT:
> +		return "IOCTL_ND_PROVIDER_INIT\n";
> +	case IOCTL_ND_PROVIDER_BIND_FILE:
> +		return "IOCTL_ND_PROVIDER_BIND_FILE\n";
> +	case IOCTL_ND_ADAPTER_OPEN:
> +		return "IOCTL_ND_ADAPTER_OPEN\n";
> +
> +	case IOCTL_ND_ADAPTER_CLOSE:
> +		return "IOCTL_ND_ADAPTER_CLOSE\n";
> +
> +	case IOCTL_ND_ADAPTER_QUERY:
> +		return "IOCTL_ND_ADAPTER_QUERY\n";
> +
> +	case IOCTL_ND_PD_CREATE:
> +		return "IOCTL_ND_PD_CREATE\n";
> +
> +	case IOCTL_ND_PD_FREE:
> +		return "IOCTL_ND_PD_FREE\n";
> +
> +	case IOCTL_ND_CQ_CREATE:
> +		return "IOCTL_ND_CQ_CREATE\n";
> +
> +	case IOCTL_ND_CQ_FREE:
> +		return "IOCTL_ND_CQ_FREE\n";
> +	case IOCTL_ND_CQ_CANCEL_IO:
> +		return "IOCTL_ND_CQ_CANCEL_IO\n";
> +	case IOCTL_ND_CQ_GET_AFFINITY:
> +		return "IOCTL_ND_CQ_GET_AAFINITY\n";
> +	case IOCTL_ND_CQ_MODIFY:
> +		return "IOCTL_ND_CQ_MODIFY\n";
> +
> +	case IOCTL_ND_CQ_NOTIFY:
> +		return "IOCTL_ND_CQ_NOTIFY\n";
> +
> +
> +	case IOCTL_ND_LISTENER_CREATE:
> +		return "IOCTL_ND_LISTENER_CREATE\n";
> +
> +	case IOCTL_ND_LISTENER_FREE:
> +		return "IOCTL_ND_LISTENER_FREE\n";
> +
> +	case IOCTL_ND_QP_FREE:
> +		return "IOCTL_ND_QP_FREE\n";
> +
> +	case IOCTL_ND_CONNECTOR_CANCEL_IO:
> +		return "IOCTL_ND_CONNECTOR_CANCEL_IO\n";
> +
> +	case IOCTL_ND_LISTENER_CANCEL_IO:
> +		return "IOCTL_ND_LISTENER_CANCEL_IO\n";
> +
> +	case IOCTL_ND_LISTENER_BIND:
> +		return "IOCTL_ND_LISTENER_BIND\n";
> +
> +	case IOCTL_ND_LISTENER_LISTEN:
> +		return "IOCTL_ND_LISTENER_LISTEN\n";
> +
> +	case IOCTL_ND_LISTENER_GET_ADDRESS:
> +		return "IOCTL_ND_LISTENER_GET_ADDRESS\n";
> +
> +	case IOCTL_ND_LISTENER_GET_CONNECTION_REQUEST:
> +		return "IOCTL_ND_LISTENER_GET_CONNECTION_REQUEST\n";
> +
> +
> +
> +	case IOCTL_ND_CONNECTOR_CREATE:
> +		return "IOCTL_ND_CONNECTOR_CREATE\n";
> +
> +	case IOCTL_ND_CONNECTOR_FREE:
> +		return "IOCTL_ND_CONNECTOR_FREE\n";
> +
> +	case IOCTL_ND_CONNECTOR_BIND:
> +		return "IOCTL_ND_CONNECTOR_BIND\n";
> +
> +	// KYS: ALERT: ASYNCH Operation
> +	case IOCTL_ND_CONNECTOR_CONNECT:
> +		return "IOCTL_ND_CONNECTOR_CONNECT\n";
> +
> +	case IOCTL_ND_CONNECTOR_COMPLETE_CONNECT:
> +		return "IOCTL_ND_CONNECTOR_COMPLETE_CONNECT\n";
> +
> +	// KYS: ALERT: ASYNCH Operation
> +	case IOCTL_ND_CONNECTOR_ACCEPT:
> +		return "IOCTL_ND_CONNECTOR_ACCEPT\n";
> +
> +	case IOCTL_ND_CONNECTOR_REJECT:
> +		return "IOCTL_ND_CONNECTOR_REJECT\n";
> +
> +	case IOCTL_ND_CONNECTOR_GET_READ_LIMITS:
> +		return "IOCTL_ND_CONNECTOR_GET_READ_LIMITS\n";
> +
> +	case IOCTL_ND_CONNECTOR_GET_PRIVATE_DATA:
> +		return "IOCTL_ND_CONNECTOR_GET_PRIVATE_DATA\n";
> +
> +	case IOCTL_ND_CONNECTOR_GET_PEER_ADDRESS:
> +		return "IOCTL_ND_CONNECTOR_GET_PEER_ADDRESS\n";
> +
> +	case IOCTL_ND_CONNECTOR_GET_ADDRESS:
> +		return "IOCTL_ND_CONNECTOR_GET_ADDRESS\n";
> +
> +	// KYS: ALERT: ASYNCH Operation
> +	case IOCTL_ND_CONNECTOR_NOTIFY_DISCONNECT:
> +		return "IOCTL_ND_CONNECTOR_NOTIFY_DISCONNECT\n";
> +
> +	// KYS: ALERT: ASYNCH Operation
> +	case IOCTL_ND_CONNECTOR_DISCONNECT:
> +		return "IOCTL_ND_CONNECTOR_DISCONNECT\n";
> +
> +
> +
> +	case IOCTL_ND_QP_CREATE:
> +		return "IOCTL_ND_QP_CREATE\n";
> +
> +	case IOCTL_ND_MR_CREATE:
> +		return "IOCTL_ND_MR_CREATE\n";
> +
> +	case IOCTL_ND_MR_FREE:
> +		return "IOCTL_ND_MR_FREE\n";
> +	case IOCTL_ND_MR_REGISTER:
> +		return "IOCTL_ND_MR_REGISTER\n";
> +	case IOCTL_ND_MR_DEREGISTER:
> +		return "IOCTL_ND_MR_DEREGISTER\n";
> +	case IOCTL_ND_MR_CANCEL_IO:
> +		return "IOCTL_ND_MR_CANCEL_IO\n";
> +	case IOCTL_ND_ADAPTER_QUERY_ADDRESS_LIST:
> +		return "IOCTL_ND_ADAPTER_QUERY_ADDRESS_LIST\n";
> +	case IOCTL_ND_QP_FLUSH:
> +		return "IOCTL_ND_QP_FLUSH\n";
> +
> +	default:
> +		return "Unknown IOCTL\n";
> +	}
> +}
> +int get_irp_handle(struct hvnd_dev *nd_dev, u32 *local, void *irp_ctx)
> +{
> +	unsigned int local_handle;
> +	int ret;
> +
> +	local_handle = atomic_inc_return(&irp_local_hdl);
> +	*local = local_handle;
> +
> +	/*
> +	 * Now asssociate the local handle with the pointer.
> +	 */
> +	ret = insert_handle(nd_dev, &nd_dev->irpidr, irp_ctx, local_handle);
> +	hvnd_debug("irp_ctx=%p local_handle=%u\n", irp_ctx, local_handle);
> +
> +	if (ret) {
> +		hvnd_error("insert_handle failed ret=%d\n", ret);
> +		return ret;
> +	}
> +
> +	return 0;
> +}
> +
> +void put_irp_handle(struct hvnd_dev *nd_dev, u32 irp)
> +{
> +	remove_handle(nd_dev, &nd_dev->irpidr, irp);
> +
> +}
> +
> +static void init_pfn(u64 *pfn, void *addr, u32 length)
> +{
> +	int i;
> +	u32 offset = offset_in_page(addr);
> +	u32 num_pfn = DIV_ROUND_UP(offset + length, PAGE_SIZE);
> +
> +	for (i = 0; i < num_pfn; i++)
> +		pfn[i] = virt_to_phys((u8 *)addr +
> +				      (PAGE_SIZE * i)) >> PAGE_SHIFT;
> +}
> +
> +
> +static void user_va_init_pfn(u64 *pfn, struct ib_umem *umem)
> +{
> +	int entry;
> +	struct scatterlist *sg;
> +	int i = 0;
> +
> +	for_each_sg(umem->sg_head.sgl, sg, umem->nmap, entry) {
> +		pfn[i++] = page_to_pfn(sg_page(sg));
> +	}
> +}
> +
> +static u32 get_local_handle(void *p)
> +{
> +	u64 val = (unsigned long)p;
> +
> +	return (u32)val;
> +}
> +
> +static int hvnd_send_pg_buffer(struct hvnd_dev *nd_dev,
> +				struct vmbus_packet_mpb_array *desc,
> +				u32 desc_size,
> +				void *buffer,
> +				u32 bufferlen, u64 cookie)
> +{
> +	int ret;
> +	int t;
> +	struct hvnd_cookie hvnd_cookie;
> +
> +	hvnd_cookie.pkt = (void *)cookie;
> +	init_completion(&hvnd_cookie.host_event);
> +
> +	ret = vmbus_sendpacket_mpb_desc(nd_dev->hvdev->channel,
> +					desc,
> +					desc_size,
> +					buffer, bufferlen,
> +					(u64)(&hvnd_cookie));
> +
> +	if (ret) {
> +		hvnd_error("vmbus_sendpacket_mpb_desc failed ret=%d\n", ret);
> +		goto err;
> +	}
> +
> +	t = wait_for_completion_timeout(&hvnd_cookie.host_event, 500*HZ);
> +
> +	if (t == 0) {
> +		hvnd_error("wait_for_completion_timeout timed out\n");
> +		ret = -ETIMEDOUT;
> +	}
> +
> +err:
> +	return ret;
> +}
> +
> +static int hvnd_send_packet(struct hvnd_dev *nd_dev, void *buffer,
> +			    u32 bufferlen, u64 cookie, bool block)
> +{
> +	int ret;
> +	int t;
> +	struct hvnd_cookie hvnd_cookie;
> +
> +	hvnd_cookie.pkt = (void *)cookie;
> +	init_completion(&hvnd_cookie.host_event);
> +
> +	ret = vmbus_sendpacket(nd_dev->hvdev->channel, buffer, bufferlen,
> +			       (u64)(&hvnd_cookie), VM_PKT_DATA_INBAND,
> +			       VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED);
> +
> +	if (ret) {
> +		hvnd_error("vmbus_send pkt failed: %d\n", ret);
> +		goto err;
> +	}
> +
> +	if (!block)
> +		return ret;
> +
> +	t = wait_for_completion_timeout(&hvnd_cookie.host_event, 500*HZ);
> +
> +	if (t == 0) {
> +		hvnd_error("wait_for_completion_timeout timed out\n");
> +		ret = -ETIMEDOUT;
> +	}
> +
> +err:
> +	return ret;
> +}
> +
> +static int  hvnd_send_pgbuf_ioctl_pkt(struct hvnd_dev *nd_dev,
> +				struct vmbus_packet_mpb_array *desc,
> +				u32 desc_size,
> +				struct ndv_packet_hdr_control_1 *hdr,
> +				u32 pkt_size, u64 cookie)
> +{
> +	int ret;
> +	int ioctl;
> +
> +	ioctl = hdr->io_cntrl_code;
> +
> +
> +	ret = hvnd_send_pg_buffer(nd_dev, desc, desc_size,
> +				hdr, pkt_size, cookie);
> +
> +	if (ret)
> +		return ret;
> +
> +	if (hdr->pkt_hdr.status != 0) {
> +		hvnd_error("IOCTL: %s failed; status is %x\n",
> +			hvnd_get_op_name(ioctl),
> +			hdr->pkt_hdr.status);
> +		return -EINVAL;
> +	}
> +
> +	switch (hdr->io_status) {
> +	case STATUS_SUCCESS:
> +	case STATUS_PENDING:
> +		return 0;
> +
> +	default:
> +		hvnd_error("IOCTL: %s failed io status is %x\n",
> +			   hvnd_get_op_name(ioctl), hdr->io_status);
> +		return  -EINVAL;
> +	}
> +}
> +
> +int  hvnd_send_ioctl_pkt(struct hvnd_dev *nd_dev,
> +				struct ndv_packet_hdr_control_1 *hdr,
> +				u32 pkt_size, u64 cookie)
> +{
> +	int ret;
> +	int ioctl;
> +	bool block;
> +
> +	block = (hdr->irp_handle.val64 == 0) ? true : false;
> +
> +
> +	ioctl = hdr->io_cntrl_code;
> +
> +	ret = hvnd_send_packet(nd_dev, hdr, pkt_size, cookie, block);
> +
> +	if (ret)
> +		return ret;
> +
> +	if (!block)
> +		return ret;
> +
> +	if (hdr->pkt_hdr.status != 0) {
> +		hvnd_error("IOCTL: %s failed; status is %x\n",
> +			   hvnd_get_op_name(ioctl), hdr->pkt_hdr.status);
> +		return -EINVAL;
> +	}
> +
> +	switch (hdr->io_status) {
> +	case STATUS_SUCCESS:
> +	case STATUS_PENDING:
> +		return 0;
> +
> +	default:
> +		hvnd_warn("IOCTL: %s failed io status is %x\n",
> +			  hvnd_get_op_name(ioctl), hdr->io_status);
> +		return -EINVAL;
> +	}
> +}
> +
> +void hvnd_init_hdr(struct ndv_packet_hdr_control_1 *hdr,
> +			  u32 data_sz, u32 local, u32 remote,
> +			  u32 ioctl_code,
> +			  u32 ext_data_sz, u32 ext_data_offset,
> +			  u64 irp_handle)
> +
> +{
> +	int pkt_type;
> +
> +	pkt_type = NDV_PKT_ID1_CONTROL;
> +	NDV_ADD_PACKET_OPTION(pkt_type, NDV_PACKET_OPTIONS_REQUIRES_PASSIVE);
> +	hdr->pkt_hdr.packet_type = pkt_type;
> +	hdr->pkt_hdr.hdr_sz = sizeof(struct ndv_packet_hdr_control_1);
> +	hdr->pkt_hdr.data_sz = data_sz;
> +
> +	hdr->pkt_hdr.status = 0;
> +
> +	hdr->file_handle.local = local;
> +	hdr->file_handle.remote = remote;
> +	hdr->irp_handle.val64 = irp_handle;
> +
> +	hdr->io_cntrl_code = ioctl_code;
> +	hdr->output_buf_sz = data_sz - ext_data_sz;
> +	hdr->input_buf_sz = data_sz - ext_data_sz;
> +
> +	hdr->input_output_buf_offset = 0;
> +
> +	hdr->extended_data.size = ext_data_sz;
> +	hdr->extended_data.offset = ext_data_offset;
> +}
> +
> +
> +int hvnd_create_file(struct hvnd_dev *nd_dev, void  *uctx,
> +		     struct ndv_pkt_hdr_create_1 *create, u32 file_flags)
> +{
> +	int ret;
> +	int pkt_type;
> +
> +
> +	pkt_type = NDV_PKT_ID1_CREATE;
> +	NDV_ADD_PACKET_OPTION(pkt_type, NDV_PACKET_OPTIONS_REQUIRES_PASSIVE);
> +	create->pkt_hdr.packet_type = pkt_type;
> +	create->pkt_hdr.hdr_sz = sizeof(struct ndv_pkt_hdr_create_1);
> +	create->pkt_hdr.data_sz = 0;
> +
> +	create->handle.local = get_local_handle(uctx);
> +	create->access_mask = STANDARD_RIGHTS_ALL;
> +	create->open_options = OPEN_EXISTING;
> +	create->file_attributes = FILE_ATTRIBUTE_NORMAL | file_flags;
> +	create->share_access = FILE_SHARE_ALL;
> +
> +	ret = hvnd_send_packet(nd_dev, create,
> +			       sizeof(struct ndv_pkt_hdr_create_1),
> +			       (unsigned long)create, true);
> +	return ret;
> +}
> +
> +int hvnd_cleanup_file(struct hvnd_dev *nd_dev, u32 local, u32 remote)
> +{
> +	int ret;
> +	int pkt_type;
> +	struct ndv_pkt_hdr_cleanup_1 cleanup_pkt;
> +
> +
> +	pkt_type = NDV_PKT_ID1_CLEANUP;
> +	NDV_ADD_PACKET_OPTION(pkt_type, NDV_PACKET_OPTIONS_REQUIRES_PASSIVE);
> +
> +	cleanup_pkt.pkt_hdr.packet_type = pkt_type;
> +	cleanup_pkt.pkt_hdr.hdr_sz = sizeof(struct ndv_pkt_hdr_create_1);
> +	cleanup_pkt.pkt_hdr.data_sz = 0;
> +
> +	cleanup_pkt.handle.local = local;
> +	cleanup_pkt.handle.remote = remote;
> +
> +	ret = hvnd_send_packet(nd_dev, &cleanup_pkt,
> +			       sizeof(struct ndv_pkt_hdr_create_1),
> +			       (unsigned long)&cleanup_pkt, true);
> +	return ret;
> +}
> +
> +
> +static int  hvnd_do_ioctl(struct hvnd_dev *nd_dev, u32 ioctl,
> +		     struct pkt_nd_provider_ioctl *pkt,
> +		     union ndv_context_handle *hdr_handle,
> +		     struct nd_handle  *ioctl_handle,
> +		     u8 *buf, u32 buf_len, bool c_in, bool c_out, u64 irp_val)
> +{
> +	int ret;
> +	int pkt_type;
> +
> +	pkt_type = NDV_PKT_ID1_CONTROL;
> +	NDV_ADD_PACKET_OPTION(pkt_type, NDV_PACKET_OPTIONS_REQUIRES_PASSIVE);
> +
> +	pkt->hdr.pkt_hdr.packet_type = pkt_type;
> +	pkt->hdr.pkt_hdr.hdr_sz = sizeof(struct ndv_packet_hdr_control_1);
> +	pkt->hdr.pkt_hdr.data_sz = (sizeof(struct pkt_nd_provider_ioctl) -
> +				    sizeof(struct ndv_packet_hdr_control_1));
> +
> +	pkt->hdr.file_handle.local = hdr_handle->local;
> +	pkt->hdr.file_handle.remote = hdr_handle->remote;
> +	hvnd_debug("create handle local: %x remote: %x\n",
> +		   hdr_handle->local, hdr_handle->remote);
> +
> +	pkt->hdr.irp_handle.val64 = irp_val;
> +
> +	pkt->hdr.io_cntrl_code = ioctl;
> +	pkt->hdr.output_buf_sz = sizeof(struct nd_ioctl);
> +	pkt->hdr.input_buf_sz = sizeof(struct nd_ioctl);
> +	pkt->hdr.input_output_buf_offset = 0;
> +	memset(&pkt->ioctl.handle, 0, sizeof(struct nd_handle));
> +	pkt->ioctl.handle.version = ND_VERSION_1;
> +
> +	switch (ioctl) {
> +	case IOCTL_ND_PROVIDER_BIND_FILE:
> +		pkt->ioctl.handle.handle = ioctl_handle->handle;
> +		break;
> +	default:
> +		break;
> +	};
> +
> +	/*
> +	 * Copy the input buffer, if needed.
> +	 */
> +
> +	if (c_in && (buf != NULL))
> +		memcpy(pkt->ioctl.raw_buffer, buf, buf_len);
> +
> +	ret = hvnd_send_packet(nd_dev, pkt,
> +			       sizeof(struct pkt_nd_provider_ioctl),
> +			       (unsigned long)pkt, true);
> +
> +	if (ret)
> +		return ret;
> +
> +	if (c_out && (buf != NULL))
> +		memcpy(buf, pkt->ioctl.raw_buffer, buf_len);
> +
> +	return ret;
> +}
> +
> +static int idr_callback(int id, void *p, void *data)
> +{
> +	if (p == data)
> +		return id;
> +	return 0;
> +}
> +
> +void remove_uctx(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx)
> +{
> +	int pid = current_pid();
> +	unsigned long flags;
> +	int id;
> +
> +	if (get_uctx(nd_dev, pid) == uctx)
> +		remove_handle(nd_dev, &nd_dev->uctxidr, pid);
> +	else {
> +		hvnd_warn("uctx %p not found on pid %d, doing a idr search\n",
> +			  uctx, current_pid());
> +
> +		spin_lock_irqsave(&nd_dev->id_lock, flags);
> +		id = idr_for_each(&nd_dev->uctxidr, idr_callback, uctx);
> +		spin_unlock_irqrestore(&nd_dev->id_lock, flags);
> +
> +		if (id)
> +			remove_handle(nd_dev, &nd_dev->uctxidr, id);
> +		else {
> +			hvnd_error("uctx %p not found in idr table\n", uctx);
> +			return;
> +		}
> +	}
> +
> +	kfree(uctx);
> +}
> +
> +int hvnd_close_adaptor(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx)
> +{
> +	int ret;
> +
> +	/*
> +	 * First close the adaptor.
> +	 */
> +
> +	ret = hvnd_free_handle(nd_dev, uctx,
> +				uctx->adaptor_hdl,
> +				IOCTL_ND_ADAPTER_CLOSE);
> +
> +	if (ret)
> +		hvnd_error("Adaptor close failed; ret is %x\n", ret);
> +
> +	/*
> +	 * Now close the two files we created.
> +	 */
> +
> +	ret = hvnd_cleanup_file(nd_dev, uctx->file_handle_ovl.local,
> +				uctx->file_handle_ovl.remote);
> +
> +	if (ret)
> +		hvnd_error("file cleanup failed; ret is %x\n", ret);
> +
> +	ret = hvnd_cleanup_file(nd_dev, uctx->file_handle.local,
> +				uctx->file_handle.remote);
> +
> +	if (ret)
> +		hvnd_error("File cleanup failed; ret is %x\n", ret);
> +
> +	/*
> +	 * Remove the uctx from the ID table.
> +	 */
> +	remove_uctx(nd_dev, uctx);
> +
> +	return 0;
> +}
> +
> +int hvnd_open_adaptor(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx)
> +{
> +	int ret;
> +	struct pkt_nd_provider_ioctl *pr_init = &uctx->pr_init_pkt;
> +	int pkt_type;
> +	struct nd_handle ioctl_handle;
> +	struct pkt_nd_open_adapter *pr_o_adap = &uctx->o_adap_pkt;
> +
> +	ret = hvnd_create_file(nd_dev, uctx, &uctx->create_pkt, 0);
> +	if (ret) {
> +		hvnd_error("hvnd_create_file failed ret=%d\n", ret);
> +		goto error_cr;
> +	}
> +
> +	if (uctx->create_pkt.pkt_hdr.status != 0) {
> +		hvnd_error("create File failed; status is %d\n",
> +			uctx->create_pkt.pkt_hdr.status);
> +		ret = -EINVAL;
> +		goto error_cr;
> +	}
> +
> +	uctx->file_handle.local = uctx->create_pkt.handle.local;
> +	uctx->file_handle.remote = uctx->create_pkt.handle.remote;
> +	hvnd_debug("INITIALIZE PROVIDER\n");
> +	/*
> +	 * Now Initialize the Provider.
> +	 */
> +	ioctl_handle.handle = 0;
> +	ret = hvnd_do_ioctl(nd_dev, IOCTL_ND_PROVIDER_INIT, pr_init,
> +			    &uctx->create_pkt.handle,
> +			    &ioctl_handle, NULL, 0, false, false, 0);
> +
> +	if (ret) {
> +		ret = -EINVAL;
> +		goto error_pr_init;
> +	}
> +
> +	if (pr_init->hdr.pkt_hdr.status != 0) {
> +		hvnd_error("Provider INIT failed; status is %d\n",
> +			pr_init->hdr.pkt_hdr.status);
> +		ret = -EINVAL;
> +		goto error_pr_init;
> +	}
> +
> +	if (pr_init->hdr.io_status != 0) {
> +		hvnd_error("Provider INIT failed; io status is %d\n",
> +			pr_init->hdr.io_status);
> +		ret = -EINVAL;
> +		goto error_pr_init;
> +	}
> +
> +	/*
> +	 * Now create the overlap file.
> +	 */
> +
> +	hvnd_debug("CREATE OVERLAP FILE\n");
> +	ret = hvnd_create_file(nd_dev, uctx, &uctx->create_pkt_ovl,
> +			       FILE_FLAG_OVERLAPPED);
> +	if (ret) {
> +		hvnd_error("hvnd_create_file failed ret=%d\n", ret);
> +		goto error_pr_init;
> +	}
> +
> +	if (uctx->create_pkt_ovl.pkt_hdr.status != 0) {
> +		hvnd_error("create Overlap File failed; status is %d\n",
> +			uctx->create_pkt_ovl.pkt_hdr.status);
> +		ret = -EINVAL;
> +		goto error_pr_init;
> +	}
> +	uctx->file_handle_ovl.local = uctx->create_pkt_ovl.handle.local;
> +	uctx->file_handle_ovl.remote = uctx->create_pkt_ovl.handle.remote;
> +
> +	/*
> +	 * Now bind the two file handles together.
> +	 */
> +
> +	hvnd_debug("BIND FILE IOCTL remote handle: %d local handle: %d\n",
> +		uctx->create_pkt_ovl.handle.remote,
> +		uctx->create_pkt_ovl.handle.local);
> +
> +	ioctl_handle.handle = uctx->create_pkt_ovl.handle.val64;
> +	ret = hvnd_do_ioctl(nd_dev, IOCTL_ND_PROVIDER_BIND_FILE, pr_init,
> +			    &uctx->create_pkt.handle,
> +			    &ioctl_handle, NULL, 0, false, false, 0);
> +
> +	if (ret) {
> +		ret = -EINVAL;
> +		goto error_file_bind;
> +	}
> +	if (pr_init->hdr.pkt_hdr.status != 0) {
> +		hvnd_error("Provider File bind failed; status is %d\n",
> +			pr_init->hdr.pkt_hdr.status);
> +		ret = -EINVAL;
> +		goto error_file_bind;
> +	}
> +	if (pr_init->hdr.io_status != 0) {
> +		hvnd_error("Provider INIT failed; io status is %d\n",
> +			pr_init->hdr.io_status);
> +		ret = -EINVAL;
> +		goto error_file_bind;
> +	}
> +
> +	/*
> +	 * Now open the adaptor.
> +	 */
> +
> +	hvnd_debug("OPENING THE ADAPTOR\n");
> +
> +	pkt_type = NDV_PKT_ID1_CONTROL;
> +	NDV_ADD_PACKET_OPTION(pkt_type, NDV_PACKET_OPTIONS_REQUIRES_PASSIVE);
> +	pr_o_adap->hdr.pkt_hdr.packet_type = pkt_type;
> +	pr_o_adap->hdr.pkt_hdr.hdr_sz = sizeof(struct ndv_packet_hdr_control_1);
> +	pr_o_adap->hdr.pkt_hdr.data_sz = sizeof(struct pkt_nd_open_adapter) -
> +		sizeof(struct ndv_packet_hdr_control_1);
> +
> +	pr_o_adap->hdr.pkt_hdr.status = 0;
> +
> +	hvnd_debug("hdr sz is %d\n", pr_o_adap->hdr.pkt_hdr.hdr_sz);
> +	hvnd_debug("data sz is %d\n", pr_o_adap->hdr.pkt_hdr.data_sz);
> +
> +	pr_o_adap->hdr.file_handle.local = uctx->create_pkt.handle.local;
> +	pr_o_adap->hdr.file_handle.remote = uctx->create_pkt.handle.remote;
> +	hvnd_debug("create handle local is %x\n",
> +		   uctx->create_pkt.handle.local);
> +	hvnd_debug("create handle remote is %x\n",
> +		   uctx->create_pkt.handle.remote);
> +	pr_o_adap->hdr.irp_handle.val64 = 0;
> +
> +	pr_o_adap->hdr.io_cntrl_code = IOCTL_ND_ADAPTER_OPEN;
> +	pr_o_adap->hdr.output_buf_sz = pr_o_adap->hdr.pkt_hdr.data_sz -
> +		sizeof(struct extended_data_oad);
> +	pr_o_adap->hdr.input_buf_sz = pr_o_adap->hdr.pkt_hdr.data_sz -
> +		sizeof(struct extended_data_oad);
> +
> +	hvnd_debug("output buf sz is %d\n", pr_o_adap->hdr.output_buf_sz);
> +	hvnd_debug("input buf sz is %d\n", pr_o_adap->hdr.input_buf_sz);
> +	hvnd_debug("packet size is %d\n",
> +		   (int)sizeof(struct pkt_nd_open_adapter));
> +
> +	pr_o_adap->hdr.input_output_buf_offset = 0;
> +
> +
> +	pr_o_adap->hdr.extended_data.size = sizeof(struct extended_data_oad);
> +	pr_o_adap->hdr.extended_data.offset =
> +		offsetof(struct pkt_nd_open_adapter, ext_data) -
> +		sizeof(struct ndv_packet_hdr_control_1);
> +
> +	hvnd_debug("size of the extended data size: %d\n",
> +		   (int)sizeof(struct extended_data_oad));
> +	hvnd_debug("offset of extended data: %d\n",
> +		   pr_o_adap->hdr.extended_data.offset);
> +
> +	/*
> +	 * Now fill out the ioctl section.
> +	 */
> +
> +	pr_o_adap->ioctl.input.version = ND_VERSION_1;
> +	pr_o_adap->ioctl.input.ce_mapping_cnt =
> +		RTL_NUMBER_OF(pr_o_adap->mappings.ctx_input.mappings);
> +
> +	hvnd_debug("ce_mapping cnt is %d\n",
> +		   pr_o_adap->ioctl.input.ce_mapping_cnt);
> +
> +	pr_o_adap->ioctl.input.cb_mapping_offset = sizeof(union oad_ioctl);
> +	hvnd_debug("cb_mapping offset is %d\n",
> +		   pr_o_adap->ioctl.input.cb_mapping_offset);
> +	pr_o_adap->ioctl.input.adapter_id = (u64)nd_dev;
> +
> +	pr_o_adap->mappings.ctx_input.mappings[IBV_GET_CONTEXT_UAR].map_type = ND_MAP_IOSPACE;
> +	pr_o_adap->mappings.ctx_input.mappings[IBV_GET_CONTEXT_UAR].map_io_space.cache_type = ND_NON_CACHED;
> +	pr_o_adap->mappings.ctx_input.mappings[IBV_GET_CONTEXT_UAR].map_io_space.cb_length = 4096;
> +
> +	pr_o_adap->mappings.ctx_input.mappings[IBV_GET_CONTEXT_BF].map_type  = ND_MAP_IOSPACE;
> +	pr_o_adap->mappings.ctx_input.mappings[IBV_GET_CONTEXT_BF].map_io_space.cache_type = ND_WRITE_COMBINED;
> +	pr_o_adap->mappings.ctx_input.mappings[IBV_GET_CONTEXT_BF].map_io_space.cb_length = 4096;
> +
> +	/*
> +	 * Fill in the extended data.
> +	 */
> +	pr_o_adap->ext_data.cnt = IBV_GET_CONTEXT_MAPPING_MAX;
> +
> +	ret = hvnd_send_packet(nd_dev, pr_o_adap,
> +			       sizeof(struct pkt_nd_open_adapter),
> +			       (unsigned long)pr_o_adap, true);
> +	if (ret) {
> +		ret = -EINVAL;
> +		goto error_file_bind;
> +	}
> +
> +	if (pr_o_adap->hdr.pkt_hdr.status != 0) {
> +		hvnd_error("Open adaptor failed; status is %d\n",
> +			pr_o_adap->hdr.pkt_hdr.status);
> +		ret = -EINVAL;
> +		goto error_file_bind;
> +	}
> +
> +	if (pr_o_adap->hdr.io_status != 0) {
> +		hvnd_error("Open adaptor failed;io status is %d\n",
> +			pr_o_adap->hdr.io_status);
> +		ret = -EINVAL;
> +		goto error_file_bind;
> +	}
> +
> +	/*
> +	 * Copy the necessary response from the host.
> +	 */
> +
> +	uctx->adaptor_hdl = pr_o_adap->ioctl.resrc_desc.handle;
> +
> +
> +	hvnd_debug("adaptor handle: %p\n", (void *)uctx->adaptor_hdl);
> +
> +	uctx->uar_base =
> +	pr_o_adap->mappings.ctx_output.mapping_results[IBV_GET_CONTEXT_UAR].info;
> +	hvnd_debug("uar base: %p\n", (void *)uctx->uar_base);
> +
> +	uctx->bf_base =
> +	pr_o_adap->mappings.ctx_output.mapping_results[IBV_GET_CONTEXT_BF].info;
> +	hvnd_debug("bf base: %p\n", (void *)uctx->bf_base);
> +
> +	uctx->bf_buf_size =
> +	pr_o_adap->mappings.ctx_output.bf_buf_size;
> +	hvnd_debug("bf buf size: %d\n", uctx->bf_buf_size);
> +
> +	uctx->bf_offset =
> +	pr_o_adap->mappings.ctx_output.bf_offset;
> +	hvnd_debug("bf offset: %d\n", uctx->bf_offset);
> +
> +	uctx->cqe_size =
> +	pr_o_adap->mappings.ctx_output.cqe_size;
> +	hvnd_debug("cqe size: %d\n", uctx->cqe_size);
> +
> +	uctx->max_qp_wr =
> +	pr_o_adap->mappings.ctx_output.max_qp_wr;
> +	hvnd_debug("max qp wr: %d\n", uctx->max_qp_wr);
> +
> +	uctx->max_sge =
> +	pr_o_adap->mappings.ctx_output.max_sge;
> +	hvnd_debug("max sge: %d\n", uctx->max_sge);
> +
> +	uctx->max_cqe =
> +	pr_o_adap->mappings.ctx_output.max_cqe;
> +	hvnd_debug("max cqe: %d\n", uctx->max_cqe);
> +
> +	uctx->num_qps =
> +	pr_o_adap->mappings.ctx_output.qp_tab_size;
> +	hvnd_debug("num qps: %d\n", uctx->num_qps);
> +
> +	/*
> +	 * Now query the adaptor and stash away the adaptor info.
> +	 */
> +
> +	ret = hvnd_query_adaptor(nd_dev, uctx);
> +	if (ret) {
> +		hvnd_error("Query Adaptor failed; ret is %d\n", ret);
> +		goto query_err;
> +	}
> +
> +	return ret;
> +
> +query_err:
> +	hvnd_free_handle(nd_dev, uctx,
> +			uctx->adaptor_hdl,
> +			IOCTL_ND_ADAPTER_CLOSE);
> +
> +	hvnd_error("Open Adaptor Failed!!\n");
> +
> +error_file_bind:
> +	hvnd_cleanup_file(nd_dev, uctx->file_handle_ovl.local,
> +			uctx->file_handle_ovl.remote);
> +
> +error_pr_init:
> +	hvnd_cleanup_file(nd_dev, uctx->file_handle.local,
> +			uctx->file_handle.remote);
> +
> +error_cr:
> +	if (get_uctx(nd_dev, current_pid()) != NULL)
> +		remove_handle(nd_dev, &nd_dev->uctxidr, current_pid());
> +
> +	return ret;
> +}
> +
> +int hvnd_create_cq(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
> +		   struct hvnd_cq *cq)
> +{
> +	int ret;
> +	struct pkt_nd_create_cq *pkt;
> +	int num_pfn, num_db_pfn, num_sn_pfn;
> +	int cq_pkt_size;
> +	unsigned int cq_buf_size, offset;
> +	u32 ext_data_sz;
> +	u32 ext_data_offset;
> +
> +	/*
> +	 * Now create CQ.
> +	 * First compute the number of PFNs we need to accomodate:
> +	 * One each for door bell and arm_sn and pages in cq buffer.
> +	 */
> +	cq_buf_size = (cq->entries * uctx->cqe_size);
> +	offset = offset_in_page(cq->cq_buf);
> +	num_pfn = DIV_ROUND_UP(offset + cq_buf_size, PAGE_SIZE);
> +
> +	offset = offset_in_page(cq->db_addr);
> +	num_db_pfn = DIV_ROUND_UP(offset + 8, PAGE_SIZE);
> +
> +	offset = offset_in_page(&cq->arm_sn);
> +	num_sn_pfn = DIV_ROUND_UP(offset + 4, PAGE_SIZE);
> +
> +	cq_pkt_size = sizeof(struct pkt_nd_create_cq) +
> +		(num_pfn  * sizeof(u64));
> +
> +	ext_data_sz = sizeof(struct create_cq_ext_data) +
> +		(num_pfn * sizeof(u64));
> +	ext_data_offset = offsetof(struct pkt_nd_create_cq, ext_data) -
> +		sizeof(struct ndv_packet_hdr_control_1);
> +
> +	hvnd_debug("CREATE CQ, num user addr pfns is %d\n", num_pfn);
> +	hvnd_debug("CREATE CQ, num db pfns is %d\n", num_db_pfn);
> +
> +	pkt = kzalloc(cq_pkt_size, GFP_KERNEL);
> +
> +	if (!pkt)
> +		return -ENOMEM;
> +
> +	hvnd_init_hdr(&pkt->hdr,
> +			(cq_pkt_size -
> +			sizeof(struct ndv_packet_hdr_control_1)),
> +			uctx->create_pkt.handle.local,
> +			uctx->create_pkt.handle.remote,
> +			IOCTL_ND_CQ_CREATE,
> +			ext_data_sz,
> +			ext_data_offset,
> +			0);
> +
> +	/*
> +	 * Now fill out the ioctl section.
> +	 */
> +
> +	pkt->ioctl.input.version = ND_VERSION_1;
> +	pkt->ioctl.input.queue_depth = cq->entries;
> +	pkt->ioctl.input.ce_mapping_cnt = MLX4_IB_CREATE_CQ_MAPPING_MAX;
> +	pkt->ioctl.input.cb_mapping_offset = sizeof(union create_cq_ioctl);
> +
> +	hvnd_debug("ce_mapping cnt is %d\n",  pkt->ioctl.input.ce_mapping_cnt);
> +	hvnd_debug("cb_mapping offset is %d\n",
> +		   pkt->ioctl.input.cb_mapping_offset);
> +
> +	pkt->ioctl.input.adapter_handle = uctx->adaptor_hdl;
> +	pkt->ioctl.input.affinity.mask = 0;
> +	pkt->ioctl.input.affinity.group = -1;
> +
> +	// 0 for usermode CQ arming
> +	pkt->mappings.cq_in.flags = 0;
> +
> +	pkt->mappings.cq_in.mappings[MLX4_IB_CREATE_CQ_BUF].map_memory.map_type = ND_MAP_MEMORY;
> +	pkt->mappings.cq_in.mappings[MLX4_IB_CREATE_CQ_BUF].map_memory.access_type = ND_MODIFY_ACCESS;
> +	pkt->mappings.cq_in.mappings[MLX4_IB_CREATE_CQ_BUF].map_memory.address = (u64)cq->cq_buf;
> +	pkt->mappings.cq_in.mappings[MLX4_IB_CREATE_CQ_BUF].map_memory.cb_length = (cq->entries * uctx->cqe_size);
> +
> +	pkt->mappings.cq_in.mappings[MLX4_IB_CREATE_CQ_DB].map_memory.map_type = ND_MAP_MEMORY_COALLESCE;
> +	pkt->mappings.cq_in.mappings[MLX4_IB_CREATE_CQ_DB].map_memory.access_type = ND_WRITE_ACCESS;
> +	pkt->mappings.cq_in.mappings[MLX4_IB_CREATE_CQ_DB].map_memory.address = (u64)cq->db_addr;
> +	pkt->mappings.cq_in.mappings[MLX4_IB_CREATE_CQ_DB].map_memory.cb_length = 8; //size of two ints
> +
> +
> +	pkt->mappings.cq_in.mappings[MLX4_IB_CREATE_CQ_ARM_SN].map_memory.map_type = ND_MAP_MEMORY;
> +	pkt->mappings.cq_in.mappings[MLX4_IB_CREATE_CQ_ARM_SN].map_memory.access_type = ND_MODIFY_ACCESS;
> +	pkt->mappings.cq_in.mappings[MLX4_IB_CREATE_CQ_ARM_SN].map_memory.address = (u64)&cq->arm_sn;
> +	pkt->mappings.cq_in.mappings[MLX4_IB_CREATE_CQ_ARM_SN].map_memory.cb_length = 4; //size of one int
> +	/*
> +	 * Fill in the extended data.
> +	 */
> +
> +	pkt->ext_data.cnt = 3;
> +	pkt->ext_data.fields[MLX4_IB_CREATE_CQ_BUF].size = (sizeof(struct gpa_range) + (num_pfn * sizeof(u64)));
> +	pkt->ext_data.fields[MLX4_IB_CREATE_CQ_BUF].offset = offsetof(struct create_cq_ext_data, cqbuf_gpa);
> +
> +	pkt->ext_data.fields[MLX4_IB_CREATE_CQ_DB].size = sizeof(struct cq_db_gpa);
> +	pkt->ext_data.fields[MLX4_IB_CREATE_CQ_DB].offset = offsetof(struct create_cq_ext_data, db_gpa);
> +
> +	pkt->ext_data.fields[MLX4_IB_CREATE_CQ_ARM_SN].size = sizeof(struct cq_db_gpa);
> +	pkt->ext_data.fields[MLX4_IB_CREATE_CQ_ARM_SN].offset = offsetof(struct create_cq_ext_data, sn_gpa);
> +
> +	/*
> +	 * Fill up the gpa range for cq buffer.
> +	 */
> +
> +	pkt->ext_data.db_gpa.byte_count = 8;
> +	pkt->ext_data.db_gpa.byte_offset = offset_in_page(cq->db_addr);
> +	user_va_init_pfn(&pkt->ext_data.db_gpa.pfn_array[0], cq->db_umem);
> +
> +	pkt->ext_data.sn_gpa.byte_count = 4;
> +	pkt->ext_data.sn_gpa.byte_offset = offset_in_page(&cq->arm_sn);
> +	init_pfn(&pkt->ext_data.sn_gpa.pfn_array[0],
> +		 &cq->arm_sn,
> +		 4);
> +
> +	pkt->ext_data.cqbuf_gpa.byte_count = (cq->entries * uctx->cqe_size);
> +	pkt->ext_data.cqbuf_gpa.byte_offset = offset_in_page(cq->cq_buf);
> +	user_va_init_pfn(&pkt->ext_data.cqbuf_gpa.pfn_array[0], cq->umem);
> +
> +	ret = hvnd_send_ioctl_pkt(nd_dev, &pkt->hdr, cq_pkt_size, (u64)pkt);
> +
> +	if (ret)
> +		goto cr_cq_err;
> +
> +	/*
> +	 * Copy the necessary response from the host.
> +	 */
> +	cq->cqn = pkt->mappings.cq_resp.cqn;
> +	cq->cqe = pkt->mappings.cq_resp.cqe;
> +	cq->cq_handle = pkt->ioctl.resrc_desc.handle;
> +
> +	ret = insert_handle(nd_dev, &nd_dev->cqidr, cq, cq->cqn);
> +
> +	if (ret)
> +		goto cr_cq_err;
> +	hvnd_debug("CQ create after success cqn is %d\n", cq->cqn);
> +	hvnd_debug("CQ create after success cqe is %d\n", cq->cqe);
> +	hvnd_debug("CQ create after success cq handle is %p\n",
> +		   (void *)cq->cq_handle);
> +
> +cr_cq_err:
> +	kfree(pkt);
> +	return ret;
> +}
> +
> +int hvnd_destroy_cq(struct hvnd_dev *nd_dev, struct hvnd_cq *cq)
> +{
> +	struct pkt_nd_free_cq free_cq_pkt;
> +	int ret;
> +
> +	// KYS try to avoid having to zero everything
> +	memset(&free_cq_pkt, 0, sizeof(free_cq_pkt));
> +	hvnd_init_hdr(&free_cq_pkt.hdr,
> +		      sizeof(struct pkt_nd_free_cq) -
> +		      sizeof(struct ndv_packet_hdr_control_1),
> +		      cq->uctx->create_pkt.handle.local,
> +		      cq->uctx->create_pkt.handle.remote,
> +		      IOCTL_ND_CQ_FREE, 0, 0, 0);
> +
> +	/*
> +	 * Now fill in the ioctl section.
> +	 */
> +	free_cq_pkt.ioctl.in.version = ND_VERSION_1;
> +	free_cq_pkt.ioctl.in.handle = cq->cq_handle;
> +
> +	ret = hvnd_send_ioctl_pkt(nd_dev, &free_cq_pkt.hdr,
> +			       sizeof(struct pkt_nd_free_cq),
> +			       (u64)&free_cq_pkt);
> +
> +	if (ret)
> +		goto free_cq_err;
> +
> +	remove_handle(nd_dev, &nd_dev->cqidr, cq->cqn);
> +
> +	return 0;
> +
> +free_cq_err:
> +	return ret;
> +}
> +
> +
> +int hvnd_notify_cq(struct hvnd_dev *nd_dev, struct hvnd_cq *cq,
> +		   u32 notify_type, u64 irp_handle)
> +{
> +	struct pkt_nd_notify_cq notify_cq_pkt;
> +	int ret;
> +	union ndv_context_handle irp_fhandle;
> +
> +	irp_fhandle.local = cq->ep_object.local_irp;
> +
> +	// KYS try to avoid having to zero everything
> +	memset(&notify_cq_pkt, 0, sizeof(notify_cq_pkt));
> +	hvnd_init_hdr(&notify_cq_pkt.hdr,
> +		      sizeof(struct pkt_nd_notify_cq) -
> +		      sizeof(struct ndv_packet_hdr_control_1),
> +		      cq->uctx->create_pkt.handle.local,
> +		      cq->uctx->create_pkt.handle.remote,
> +		      IOCTL_ND_CQ_NOTIFY, 0, 0, irp_fhandle.val64);
> +
> +	/*
> +	 * Now fill in the ioctl section.
> +	 */
> +	notify_cq_pkt.ioctl.in.version = ND_VERSION_1;
> +	notify_cq_pkt.ioctl.in.cq_handle = cq->cq_handle;
> +	notify_cq_pkt.ioctl.in.type = notify_type;
> +
> +
> +	ret = hvnd_send_ioctl_pkt(nd_dev, &notify_cq_pkt.hdr,
> +			       sizeof(struct pkt_nd_notify_cq),
> +			       (u64)&notify_cq_pkt);
> +
> +	return ret;
> +}
> +
> +/*
> + * Memory region operations.
> + */
> +int hvnd_cr_mr(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
> +		u64 pd_handle, u64 *mr_handle)
> +{
> +	struct pkt_nd_create_mr pkt;
> +	int ret;
> +
> +	// KYS try to avoid having to zero everything
> +	memset(&pkt, 0, sizeof(pkt));
> +	hvnd_init_hdr(&pkt.hdr,
> +		      sizeof(pkt) -
> +		      sizeof(struct ndv_packet_hdr_control_1),
> +		      uctx->create_pkt.handle.local,
> +		      uctx->create_pkt.handle.remote,
> +		      IOCTL_ND_MR_CREATE, 0, 0, 0);
> +
> +	/*
> +	 * Now fill in the ioctl section.
> +	 */
> +	pkt.ioctl.in.version = ND_VERSION_1;
> +	pkt.ioctl.in.handle = pd_handle;
> +	hvnd_debug("PD handle is %p\n", (void *)pd_handle);
> +	pkt.ioctl.in.reserved = 0;
> +
> +	ret = hvnd_send_ioctl_pkt(nd_dev, &pkt.hdr, sizeof(pkt), (u64)&pkt);
> +
> +	if (ret)
> +		goto err;
> +
> +	/*
> +	 * Copy the  handle.
> +	 */
> +	hvnd_debug("mr handle is %p\n", (void *)pkt.ioctl.out);
> +	*mr_handle = pkt.ioctl.out;
> +
> +	return 0;
> +
> +err:
> +	hvnd_error("create mr failed: %d\n", ret);
> +	return ret;
> +
> +}
> +
> +int hvnd_free_mr(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
> +		 u64 handle)
> +{
> +	return hvnd_free_handle(nd_dev, uctx, handle, IOCTL_ND_MR_FREE);
> +}
> +
> +int hvnd_deregister_mr(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
> +			u64 handle)
> +{
> +	struct pkt_nd_deregister_mr pkt;
> +	int ret;
> +
> +	// KYS try to avoid having to zero everything
> +	memset(&pkt, 0, sizeof(pkt));
> +	hvnd_init_hdr(&pkt.hdr,
> +		      sizeof(pkt) -
> +		      sizeof(struct ndv_packet_hdr_control_1),
> +		      uctx->create_pkt.handle.local,
> +		      uctx->create_pkt.handle.remote,
> +		      IOCTL_ND_MR_DEREGISTER, 0, 0, 0);
> +
> +	/*
> +	 * Now fill in the ioctl section.
> +	 */
> +	pkt.ioctl.in.version = ND_VERSION_1;
> +	pkt.ioctl.in.handle = handle;
> +	pkt.ioctl.in.reserved = 0;
> +
> +	ret = hvnd_send_ioctl_pkt(nd_dev, &pkt.hdr, sizeof(pkt), (u64)&pkt);
> +
> +	if (ret)
> +		goto err;
> +
> +	return 0;
> +
> +err:
> +	hvnd_error("de-register mr failed: %d\n", ret);
> +	return ret;
> +
> +}
> +
> +static inline u32 hvnd_convert_access(int acc)
> +{
> +	return (acc & IB_ACCESS_REMOTE_WRITE ? ND_MR_FLAG_ALLOW_REMOTE_WRITE : 0) |
> +	    (acc & IB_ACCESS_REMOTE_READ ? ND_MR_FLAG_ALLOW_REMOTE_READ : 0) |
> +	    (acc & IB_ACCESS_LOCAL_WRITE ? ND_MR_FLAG_ALLOW_LOCAL_WRITE : 0);
> +}
> +
> +
> +int hvnd_mr_register(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
> +		     struct hvnd_mr *mr)
> +{
> +	struct pkt_nd_register_mr pkt;
> +	int ret;
> +	struct hv_mpb_array *pb;
> +	struct vmbus_packet_mpb_array *tpb;
> +	int sz_leaf;
> +	int num_pgs;
> +	int i = 0;
> +	int ext_data_sz;
> +	u32 acc_flags;
> +	u32 desc_size;
> +	int pkt_type;
> +
> +	/*
> +	 * The user address is passed in via a two level structure.
> +	 * An Array of struct hv_page_buffer will be used to describe
> +	 * the user memory. The pages containing this array will be descibed
> +	 * in another array of struct hv_page_buffer. We pass this seconed level
> +	 * array to the host.
> +	 */
> +
> +	hvnd_debug("ib_umem_page_count(mr->umem)=%d\n",
> +		   ib_umem_page_count(mr->umem));
> +
> +	sz_leaf = ib_umem_page_count(mr->umem) * sizeof(u64) +
> +		sizeof(struct hv_mpb_array);
> +
> +	pb = (struct hv_mpb_array *) __get_free_pages(GFP_KERNEL|__GFP_ZERO,
> +						      get_order(sz_leaf));
> +
> +	if (pb == NULL)
> +		return -ENOMEM;
> +	/*
> +	 * Allocate an array of hv_page_buffer to describe the first level.
> +	 */
> +	num_pgs = DIV_ROUND_UP(sz_leaf, PAGE_SIZE);
> +	hvnd_debug("num pages in the top array is %d\n", num_pgs);
> +
> +	desc_size = (num_pgs * sizeof(u64) +
> +			sizeof(struct vmbus_packet_mpb_array));
> +	tpb = (struct vmbus_packet_mpb_array *)
> +		__get_free_pages(GFP_KERNEL|__GFP_ZERO, get_order(desc_size));
> +
> +	if (tpb == NULL) {
> +		free_pages((unsigned long)pb, get_order(sz_leaf));
> +		return -ENOMEM;
> +	}
> +
> +	hvnd_debug("sz leaf: %d; pgs in top %d\n", sz_leaf, num_pgs);
> +
> +	/*
> +	 * Now fill the leaf level array.
> +	 */
> +	pb->len = mr->length;
> +	pb->offset = offset_in_page(mr->start);
> +	user_va_init_pfn(pb->pfn_array, mr->umem);
> +
> +	/*
> +	 * Now fill out the top level array.
> +	 */
> +	for (i = 0; i < num_pgs; i++) {
> +		tpb->range.pfn_array[i] = virt_to_phys(
> +			(u8 *)pb + (PAGE_SIZE * i)) >> PAGE_SHIFT;
> +		hvnd_debug("virtual address = %p\n",
> +			   (u8 *)pb + (PAGE_SIZE * i));
> +		hvnd_debug("physical address = %llx\n",
> +			   virt_to_phys((u8 *)pb + (PAGE_SIZE * i)));
> +		hvnd_debug("tpb->range.pfn_array[%d]=%llx\n", i,
> +			   tpb->range.pfn_array[i]);
> +	}
> +
> +	tpb->range.offset = 8;
> +	tpb->range.len = ib_umem_page_count(mr->umem) * sizeof(u64);
> +
> +	// KYS try to avoid having to zero everything
> +	memset(&pkt, 0, sizeof(pkt));
> +	ext_data_sz = (ib_umem_page_count(mr->umem) * sizeof(u64));
> +	acc_flags = ND_MR_FLAG_DO_NOT_SECURE_VM | hvnd_convert_access(mr->acc);
> +	hvnd_debug("memory register access flags are: %x\n", acc_flags);
> +
> +	hvnd_init_hdr(&pkt.hdr,
> +		      sizeof(pkt) -
> +		      sizeof(struct ndv_packet_hdr_control_1),
> +		      uctx->create_pkt.handle.local,
> +		      uctx->create_pkt.handle.remote,
> +		      IOCTL_ND_MR_REGISTER, 0, 0, 0);
> +
> +	/*
> +	 * The memory registration call uses a different mechanism to pass
> +	 * pfn information.
> +	 */
> +
> +	pkt_type = pkt.hdr.pkt_hdr.packet_type;
> +	NDV_ADD_PACKET_OPTION(pkt_type, NDV_PACKET_OPTION_EXTERNAL_DATA);
> +	pkt.hdr.pkt_hdr.packet_type = pkt_type;
> +
> +	pkt.hdr.extended_data.size = ext_data_sz;
> +	pkt.hdr.extended_data.offset = 0;
> +	/*
> +	 * Now fill out the ioctl.
> +	 */
> +
> +	pkt.ioctl.in.header.version = ND_VERSION_1;
> +	pkt.ioctl.in.header.flags = acc_flags;
> +	pkt.ioctl.in.header.cb_length = mr->length;
> +	pkt.ioctl.in.header.target_addr = mr->virt;
> +	pkt.ioctl.in.header.mr_handle = mr->mr_handle;
> +	pkt.ioctl.in.address = mr->virt;
> +
> +	/*
> +	 * Now send the packet to the host.
> +	 */
> +
> +	ret = hvnd_send_pgbuf_ioctl_pkt(nd_dev,
> +					tpb, desc_size,
> +					&pkt.hdr,
> +					sizeof(pkt),
> +					(unsigned long)&pkt);
> +
> +	if (ret)
> +		goto err;
> +
> +	hvnd_info("MR REGISTRATION SUCCESS\n");
> +	/*
> +	 * Copy the mr registration data.
> +	 */
> +	hvnd_debug("mr registration lkey %x\n", pkt.ioctl.out.lkey);
> +	hvnd_debug("mr registration rkey %x\n", pkt.ioctl.out.rkey);
> +
> +	mr->mr_lkey = pkt.ioctl.out.lkey;
> +	mr->mr_rkey = pkt.ioctl.out.rkey;
> +
> +	mr->ibmr.lkey = mr->mr_lkey;
> +	mr->ibmr.rkey = be32_to_cpu(mr->mr_rkey);
> +	hvnd_debug("ibmr registration lkey %x\n", mr->ibmr.lkey);
> +	hvnd_debug("ibmr registration rkey  %x\n", mr->ibmr.rkey);
> +
> +	free_pages((unsigned long)pb, get_order(sz_leaf));
> +	free_pages((unsigned long)tpb, get_order(desc_size));
> +
> +	return 0;
> +
> +err:
> +	free_pages((unsigned long)pb, get_order(sz_leaf));
> +	free_pages((unsigned long)tpb, get_order(desc_size));
> +
> +	hvnd_error("mr register failed: %d\n", ret);
> +	return ret;
> +}
> +
> +/*
> + * Listener operations.
> + */
> +int hvnd_cr_listener(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
> +		     u64 *listener_handle)
> +{
> +	struct pkt_nd_cr_listener pkt;
> +	int ret;
> +
> +	// KYS try to avoid having to zero everything
> +	memset(&pkt, 0, sizeof(pkt));
> +	hvnd_init_hdr(&pkt.hdr,
> +		      sizeof(pkt) -
> +		      sizeof(struct ndv_packet_hdr_control_1),
> +		      uctx->create_pkt.handle.local,
> +		      uctx->create_pkt.handle.remote,
> +		      IOCTL_ND_LISTENER_CREATE, 0, 0, 0);
> +
> +	/*
> +	 * Now fill in the ioctl section.
> +	 */
> +	pkt.ioctl.in.hdr.version = ND_VERSION_1;
> +	pkt.ioctl.in.hdr.handle = uctx->adaptor_hdl;
> +	hvnd_debug("Adaptor handle is %p\n", (void *)uctx->adaptor_hdl);
> +	pkt.ioctl.in.hdr.reserved = 0;
> +	pkt.ioctl.in.to_semantics = false;
> +
> +	ret = hvnd_send_ioctl_pkt(nd_dev, &pkt.hdr, sizeof(pkt), (u64)&pkt);
> +
> +	if (ret)
> +		goto err;
> +
> +	/*
> +	 * Copy the listener handle.
> +	 */
> +	hvnd_debug("listener handle is %p\n", (void *)pkt.ioctl.out);
> +	*listener_handle = pkt.ioctl.out;
> +
> +	return 0;
> +
> +err:
> +	hvnd_error("create listener failed: ret=%d uctx=%p adaptor handle=%llu\n",
> +		   ret, uctx, uctx->adaptor_hdl);
> +	return ret;
> +
> +}
> +
> +int hvnd_free_listener(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
> +			u64 listener_handle)
> +{
> +	struct pkt_nd_free_listener pkt;
> +	int ret;
> +
> +	// KYS try to avoid having to zero everything
> +	memset(&pkt, 0, sizeof(pkt));
> +	hvnd_init_hdr(&pkt.hdr,
> +		      sizeof(pkt) -
> +		      sizeof(struct ndv_packet_hdr_control_1),
> +		      uctx->create_pkt.handle.local,
> +		      uctx->create_pkt.handle.remote,
> +		      IOCTL_ND_LISTENER_FREE, 0, 0, 0);
> +
> +	/*
> +	 * Now fill in the ioctl section.
> +	 */
> +	pkt.ioctl.in.version = ND_VERSION_1;
> +	pkt.ioctl.in.handle = listener_handle;
> +
> +	ret = hvnd_send_ioctl_pkt(nd_dev, &pkt.hdr, sizeof(pkt), (u64)&pkt);
> +
> +	if (ret)
> +		goto err;
> +
> +	return 0;
> +
> +err:
> +	hvnd_error("free listener failed: %d\n", ret);
> +	return ret;
> +}
> +
> +int hvnd_bind_listener(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
> +			u64 listener_handle, union nd_sockaddr_inet *addr)
> +{
> +	struct pkt_nd_bind_listener pkt;
> +	kuid_t uid = current_uid();
> +	int ret;
> +
> +	// KYS try to avoid having to zero everything
> +	memset(&pkt, 0, sizeof(pkt));
> +	hvnd_init_hdr(&pkt.hdr,
> +		      sizeof(pkt) -
> +		      sizeof(struct ndv_packet_hdr_control_1),
> +		      uctx->create_pkt.handle.local,
> +		      uctx->create_pkt.handle.remote,
> +		      IOCTL_ND_LISTENER_BIND, 0, 0, 0);
> +
> +	/*
> +	 * Now fill in the ioctl section.
> +	 */
> +	pkt.ioctl.in.hdr.version = ND_VERSION_1;
> +	pkt.ioctl.in.hdr.handle = listener_handle;
> +	pkt.ioctl.in.hdr.reserved = 0;
> +
> +	pkt.ioctl.in.authentication_id = (u32)uid.val;
> +	pkt.ioctl.in.is_admin = false;
> +
> +	memcpy(&pkt.ioctl.in.hdr.address, addr, sizeof(*addr));
> +
> +	ret = hvnd_send_ioctl_pkt(nd_dev, &pkt.hdr, sizeof(pkt), (u64)&pkt);
> +
> +	if (ret)
> +		goto err;
> +
> +	return 0;
> +
> +err:
> +	hvnd_error("bind listener failed: %d\n", ret);
> +	return ret;
> +}
> +
> +int hvnd_listen_listener(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
> +			u64 listener_handle, u32 backlog)
> +{
> +	struct pkt_nd_listen_listener pkt;
> +	int ret;
> +
> +	// KYS try to avoid having to zero everything
> +	memset(&pkt, 0, sizeof(pkt));
> +	hvnd_init_hdr(&pkt.hdr,
> +		      sizeof(pkt) -
> +		      sizeof(struct ndv_packet_hdr_control_1),
> +		      uctx->create_pkt.handle.local,
> +		      uctx->create_pkt.handle.remote,
> +		      IOCTL_ND_LISTENER_LISTEN, 0, 0, 0);
> +
> +	/*
> +	 * Now fill in the ioctl section.
> +	 */
> +	pkt.ioctl.in.version = ND_VERSION_1;
> +	pkt.ioctl.in.listener_handle = listener_handle;
> +	pkt.ioctl.in.back_log = backlog;
> +
> +
> +	ret = hvnd_send_ioctl_pkt(nd_dev, &pkt.hdr, sizeof(pkt), (u64)&pkt);
> +
> +	if (ret)
> +		goto err;
> +
> +	return 0;
> +
> +err:
> +	hvnd_error("listen listener failed: %d\n", ret);
> +	return ret;
> +}
> +
> +int hvnd_get_addr_listener(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
> +			u64 listener_handle, union nd_sockaddr_inet *addr)
> +{
> +	struct pkt_nd_get_addr_listener pkt;
> +	int ret;
> +
> +	// KYS try to avoid having to zero everything
> +	memset(&pkt, 0, sizeof(pkt));
> +	hvnd_init_hdr(&pkt.hdr,
> +		      sizeof(pkt) -
> +		      sizeof(struct ndv_packet_hdr_control_1),
> +		      uctx->create_pkt.handle.local,
> +		      uctx->create_pkt.handle.remote,
> +		      IOCTL_ND_LISTENER_GET_ADDRESS, 0, 0, 0);
> +
> +	/*
> +	 * Now fill in the ioctl section.
> +	 */
> +	pkt.ioctl.in.version = ND_VERSION_1;
> +	pkt.ioctl.in.handle = listener_handle;
> +
> +
> +	ret = hvnd_send_ioctl_pkt(nd_dev, &pkt.hdr, sizeof(pkt), (u64)&pkt);
> +
> +	if (ret)
> +		goto err;
> +
> +	/*
> +	 * Copy the adddress.
> +	 */
> +
> +	memcpy(addr, &pkt.ioctl.out, sizeof(union nd_sockaddr_inet));
> +
> +	return 0;
> +
> +err:
> +	hvnd_error("listen listener failed: %d\n", ret);
> +	return ret;
> +}
> +
> +int hvnd_get_connection_listener(struct hvnd_dev *nd_dev,
> +				 struct hvnd_ucontext *uctx,
> +				 u64 listener_handle, u64 connector_handle,
> +				 u64 irp_handle)
> +{
> +	struct pkt_nd_get_connection_listener pkt;
> +	int ret;
> +	union ndv_context_handle irp_fhandle;
> +
> +	ret = get_irp_handle(nd_dev, &irp_fhandle.local, (void *)irp_handle);
> +
> +	if (ret) {
> +		hvnd_error("get_irp_handle() failed: err: %d\n", ret);
> +		return ret;
> +	}
> +
> +	// KYS try to avoid having to zero everything
> +	memset(&pkt, 0, sizeof(pkt));
> +	hvnd_init_hdr(&pkt.hdr,
> +		      sizeof(pkt) -
> +		      sizeof(struct ndv_packet_hdr_control_1),
> +		      uctx->create_pkt.handle.local,
> +		      uctx->create_pkt.handle.remote,
> +		      IOCTL_ND_LISTENER_GET_CONNECTION_REQUEST, 0, 0,
> +		      irp_fhandle.val64);
> +
> +	/*
> +	 * Now fill in the ioctl section.
> +	 */
> +	pkt.ioctl.in.version = ND_VERSION_1;
> +	pkt.ioctl.in.listener_handle = listener_handle;
> +	pkt.ioctl.in.connector_handle = connector_handle;
> +
> +
> +	ret = hvnd_send_ioctl_pkt(nd_dev, &pkt.hdr, sizeof(pkt), (u64)&pkt);
> +
> +	if (ret)
> +		goto err;
> +
> +	return 0;
> +
> +err:
> +	hvnd_error("get connection listener failed: %d\n", ret);
> +	return ret;
> +}
> +
> +/*
> + * Connector APIs.
> + */
> +
> +int hvnd_cr_connector(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
> +		     u64 *connector_handle)
> +{
> +	struct pkt_nd_cr_connector pkt;
> +	int ret;
> +
> +	// KYS try to avoid having to zero everything
> +	memset(&pkt, 0, sizeof(pkt));
> +	hvnd_init_hdr(&pkt.hdr,
> +		      sizeof(struct pkt_nd_cr_listener) -
> +		      sizeof(struct ndv_packet_hdr_control_1),
> +		      uctx->create_pkt.handle.local,
> +		      uctx->create_pkt.handle.remote,
> +		      IOCTL_ND_CONNECTOR_CREATE, 0, 0, 0);
> +
> +	/*
> +	 * Now fill in the ioctl section.
> +	 */
> +	pkt.ioctl.in.hdr.version = ND_VERSION_1;
> +	pkt.ioctl.in.hdr.handle = uctx->adaptor_hdl;
> +	pkt.ioctl.in.to_semantics = false;
> +
> +	ret = hvnd_send_ioctl_pkt(nd_dev, &pkt.hdr, sizeof(pkt), (u64)&pkt);
> +
> +	if (ret)
> +		goto err;
> +
> +	/*
> +	 * Copy the listener handle.
> +	 */
> +	hvnd_debug("connector handle is %p\n", (void *)pkt.ioctl.out);
> +	*connector_handle = pkt.ioctl.out;
> +
> +	return 0;
> +
> +err:
> +	return ret;
> +}
> +
> +int hvnd_free_connector(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
> +			u64 handle)
> +{
> +	struct pkt_nd_free_connector pkt;
> +	int ret;
> +
> +	// KYS try to avoid having to zero everything
> +	memset(&pkt, 0, sizeof(pkt));
> +	hvnd_init_hdr(&pkt.hdr,
> +		      sizeof(pkt) -
> +		      sizeof(struct ndv_packet_hdr_control_1),
> +		      uctx->create_pkt.handle.local,
> +		      uctx->create_pkt.handle.remote,
> +		      IOCTL_ND_CONNECTOR_FREE, 0, 0, 0);
> +
> +	/*
> +	 * Now fill in the ioctl section.
> +	 */
> +	pkt.ioctl.in.version = ND_VERSION_1;
> +	pkt.ioctl.in.handle = handle;
> +
> +	ret = hvnd_send_ioctl_pkt(nd_dev, &pkt.hdr, sizeof(pkt), (u64)&pkt);
> +
> +	if (ret)
> +		goto err;
> +
> +	return 0;
> +
> +err:
> +	return ret;
> +}
> +
> +int hvnd_bind_connector(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
> +			u64 handle, union nd_sockaddr_inet *addr)
> +{
> +	struct pkt_nd_bind_connector pkt;
> +	int ret;
> +	kuid_t uid = current_uid();
> +
> +	// KYS try to avoid having to zero everything
> +	memset(&pkt, 0, sizeof(pkt));
> +	hvnd_init_hdr(&pkt.hdr,
> +		      sizeof(pkt) -
> +		      sizeof(struct ndv_packet_hdr_control_1),
> +		      uctx->create_pkt.handle.local,
> +		      uctx->create_pkt.handle.remote,
> +		      IOCTL_ND_CONNECTOR_BIND, 0, 0, 0);
> +
> +	/*
> +	 * Now fill in the ioctl section.
> +	 */
> +	pkt.ioctl.in.hdr.version = ND_VERSION_1;
> +	pkt.ioctl.in.hdr.handle = handle;
> +
> +	memcpy(&pkt.ioctl.in.hdr.address, addr, sizeof(*addr));
> +
> +	pkt.ioctl.in.authentication_id = (u32)uid.val;
> +	pkt.ioctl.in.is_admin = false;
> +
> +
> +	ret = hvnd_send_ioctl_pkt(nd_dev, &pkt.hdr, sizeof(pkt), (u64)&pkt);
> +
> +	if (ret)
> +		goto err;
> +
> +	return 0;
> +
> +err:
> +	return ret;
> +}
> +
> +int hvnd_connector_connect(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
> +			u64 connector_handle, u32 in_rd_limit, u32 out_rd_limit,
> +			u32 priv_data_length, const u8 *priv_data,
> +			u64 qp_handle, struct if_physical_addr *phys_addr,
> +			union nd_sockaddr_inet *dest_addr,
> +			struct hvnd_ep_obj *ep)
> +{
> +	struct pkt_nd_connector_connect *pkt = &ep->connector_connect_pkt;
> +	int ret;
> +	union ndv_context_handle irp_fhandle;
> +
> +	hvnd_debug("local irp is %d\n", ep->local_irp);
> +	irp_fhandle.local = ep->local_irp;
> +
> +	if (priv_data_length > MAX_PRIVATE_DATA_LEN) {
> +		hvnd_error("priv_data_length=%d\n", priv_data_length);
> +		return -EINVAL;
> +	}
> +
> +	// KYS try to avoid having to zero everything
> +	memset(pkt, 0, sizeof(*pkt));
> +	hvnd_init_hdr(&pkt->hdr,
> +		      sizeof(*pkt) -
> +		      sizeof(struct ndv_packet_hdr_control_1),
> +		      uctx->create_pkt.handle.local,
> +		      uctx->create_pkt.handle.remote,
> +		      IOCTL_ND_CONNECTOR_CONNECT, 0, 0, irp_fhandle.val64);
> +
> +	/*
> +	 * Now fill in the ioctl section.
> +	 */
> +	pkt->ioctl.in.hdr.version = ND_VERSION_1;
> +	pkt->ioctl.in.hdr.connector_handle = connector_handle;
> +	pkt->ioctl.in.hdr.read_limits.inbound = in_rd_limit;
> +	pkt->ioctl.in.hdr.read_limits.outbound = out_rd_limit;
> +	pkt->ioctl.in.hdr.cb_private_data_length = priv_data_length;
> +	pkt->ioctl.in.hdr.cb_private_data_offset =
> +		offsetof(union connector_connect_ioctl, in.priv_data);
> +	pkt->ioctl.in.hdr.qp_handle = qp_handle;
> +
> +	memcpy(&pkt->ioctl.in.hdr.phys_addr, phys_addr,
> +		sizeof(struct if_physical_addr));
> +
> +	/*
> +	 * Luke's code does not copy the ip address.
> +	 */
> +	memcpy(&pkt->ioctl.in.hdr.destination_address, dest_addr,
> +		sizeof(union nd_sockaddr_inet));
> +
> +	pkt->ioctl.in.retry_cnt = 7;
> +	pkt->ioctl.in.rnr_retry_cnt = 7;
> +	memcpy(pkt->ioctl.in.priv_data, priv_data, priv_data_length);
> +
> +	ret = hvnd_send_ioctl_pkt(nd_dev, &pkt->hdr, sizeof(*pkt), (u64)pkt);
> +
> +	if (ret)
> +		goto err;
> +
> +	return 0;
> +
> +err:
> +	return ret;
> +}
> +
> +int hvnd_connector_complete_connect(struct hvnd_dev *nd_dev,
> +				    struct hvnd_ucontext *uctx,
> +				    u64 connector_handle,
> +				    enum ibv_qp_state *qp_state)
> +{
> +	struct pkt_nd_connector_connect_complete pkt;
> +	int ret;
> +
> +	// KYS try to avoid having to zero everything
> +	memset(&pkt, 0, sizeof(pkt));
> +	hvnd_init_hdr(&pkt.hdr,
> +		      sizeof(pkt) -
> +		      sizeof(struct ndv_packet_hdr_control_1),
> +		      uctx->create_pkt.handle.local,
> +		      uctx->create_pkt.handle.remote,
> +		      IOCTL_ND_CONNECTOR_COMPLETE_CONNECT, 0, 0, 0);
> +
> +	/*
> +	 * Now fill in the ioctl section.
> +	 */
> +	pkt.ioctl.in.hdr.version = ND_VERSION_1;
> +	pkt.ioctl.in.hdr.handle = connector_handle;
> +	pkt.ioctl.in.rnr_nak_to = 0;
> +
> +	ret = hvnd_send_ioctl_pkt(nd_dev, &pkt.hdr, sizeof(pkt), (u64)&pkt);
> +
> +	if (ret)
> +		goto err;
> +
> +	*qp_state = pkt.ioctl.out.state;
> +	return 0;
> +
> +err:
> +	return ret;
> +}
> +
> +int hvnd_connector_accept(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
> +			u64 connector_handle,
> +			u64 qp_handle,
> +			u32 in_rd_limit, u32 out_rd_limit,
> +			u32 priv_data_length, const u8 *priv_data,
> +			enum ibv_qp_state *qp_state, struct hvnd_ep_obj *ep)
> +{
> +	struct pkt_nd_connector_accept pkt;
> +	int ret;
> +	union ndv_context_handle irp_fhandle;
> +
> +	irp_fhandle.local = ep->local_irp;
> +
> +	if (priv_data_length > MAX_PRIVATE_DATA_LEN) {
> +		hvnd_error("priv_data_length=%d\n", priv_data_length);
> +		return -EINVAL;
> +	}
> +
> +	// KYS try to avoid having to zero everything
> +	memset(&pkt, 0, sizeof(pkt));
> +	hvnd_init_hdr(&pkt.hdr,
> +		      sizeof(pkt) -
> +		      sizeof(struct ndv_packet_hdr_control_1),
> +		      uctx->create_pkt.handle.local,
> +		      uctx->create_pkt.handle.remote,
> +		      IOCTL_ND_CONNECTOR_ACCEPT, 0, 0, irp_fhandle.val64);
> +
> +	/*
> +	 * Now fill in the ioctl section.
> +	 */
> +	pkt.ioctl.in.hdr.version = ND_VERSION_1;
> +	pkt.ioctl.in.hdr.reserved = 0;
> +	pkt.ioctl.in.hdr.read_limits.inbound = in_rd_limit;
> +	pkt.ioctl.in.hdr.read_limits.outbound = out_rd_limit;
> +	pkt.ioctl.in.hdr.cb_private_data_length = priv_data_length;
> +
> +	pkt.ioctl.in.hdr.cb_private_data_offset =
> +		offsetof(struct connector_accept_in, private_data);
> +
> +	pkt.ioctl.in.hdr.connector_handle = connector_handle;
> +	pkt.ioctl.in.hdr.qp_handle = qp_handle;
> +
> +	pkt.ioctl.in.rnr_nak_to = 0;
> +	pkt.ioctl.in.rnr_retry_cnt = 7;
> +
> +
> +	memcpy(pkt.ioctl.in.private_data, priv_data, priv_data_length);
> +
> +	ret = hvnd_send_ioctl_pkt(nd_dev, &pkt.hdr, sizeof(pkt), (u64)&pkt);
> +
> +	if (ret)
> +		goto err;
> +
> +	*qp_state = pkt.ioctl.out.state;
> +	return 0;
> +
> +err:
> +	return ret;
> +}
> +
> +int hvnd_connector_reject(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
> +			u64 connector_handle,
> +			u32 priv_data_length, u8 *priv_data,
> +			enum ibv_qp_state *qp_state)
> +{
> +	struct pkt_nd_connector_reject pkt;
> +	int ret;
> +
> +	if (priv_data_length > MAX_PRIVATE_DATA_LEN) {
> +		hvnd_error("priv_data_length=%d\n", priv_data_length);
> +		return -EINVAL;
> +	}
> +
> +	// KYS try to avoid having to zero everything
> +	memset(&pkt, 0, sizeof(pkt));
> +	hvnd_init_hdr(&pkt.hdr,
> +		      sizeof(pkt) -
> +		      sizeof(struct ndv_packet_hdr_control_1),
> +		      uctx->create_pkt.handle.local,
> +		      uctx->create_pkt.handle.remote,
> +		      IOCTL_ND_CONNECTOR_REJECT, 0, 0, 0);
> +
> +	/*
> +	 * Now fill in the ioctl section.
> +	 */
> +	pkt.ioctl.in.hdr.version = ND_VERSION_1;
> +	pkt.ioctl.in.hdr.reserved = 0;
> +	pkt.ioctl.in.hdr.cb_private_data_length = priv_data_length;
> +
> +	pkt.ioctl.in.hdr.cb_private_data_offset =
> +		offsetof(struct connector_reject_in, private_data);
> +
> +	pkt.ioctl.in.hdr.connector_handle = connector_handle;
> +
> +	memcpy(pkt.ioctl.in.private_data, priv_data, priv_data_length);
> +
> +	ret = hvnd_send_ioctl_pkt(nd_dev, &pkt.hdr, sizeof(pkt), (u64)&pkt);
> +
> +	if (ret)
> +		goto err;
> +
> +	*qp_state = pkt.ioctl.out.state;
> +	return 0;
> +
> +err:
> +	return ret;
> +}
> +
> +int hvnd_connector_get_rd_limits(struct hvnd_dev *nd_dev,
> +			struct hvnd_ucontext *uctx,
> +			u64 connector_handle,
> +			struct nd_read_limits *rd_limits)
> +{
> +	struct pkt_nd_connector_get_rd_limits pkt;
> +	int ret;
> +
> +
> +	// KYS try to avoid having to zero everything
> +	memset(&pkt, 0, sizeof(pkt));
> +	hvnd_init_hdr(&pkt.hdr,
> +		      sizeof(pkt) -
> +		      sizeof(struct ndv_packet_hdr_control_1),
> +		      uctx->create_pkt.handle.local,
> +		      uctx->create_pkt.handle.remote,
> +		      IOCTL_ND_CONNECTOR_GET_READ_LIMITS, 0, 0, 0);
> +
> +	/*
> +	 * Now fill in the ioctl section.
> +	 */
> +	pkt.ioctl.in.in.version = ND_VERSION_1;
> +	pkt.ioctl.in.in.reserved = 0;
> +	pkt.ioctl.in.in.handle = connector_handle;
> +
> +	ret = hvnd_send_ioctl_pkt(nd_dev, &pkt.hdr, sizeof(pkt), (u64)&pkt);
> +
> +	if (ret)
> +		goto err;
> +
> +	*rd_limits = pkt.ioctl.out.out;
> +	return 0;
> +
> +err:
> +	return ret;
> +}
> +
> +int hvnd_connector_get_priv_data(struct hvnd_dev *nd_dev,
> +			struct hvnd_ucontext *uctx,
> +			u64 connector_handle,
> +			u8 *priv_data)
> +{
> +	struct pkt_nd_connector_get_priv_data pkt;
> +	int ret;
> +
> +
> +	// KYS try to avoid having to zero everything
> +	memset(&pkt, 0, sizeof(pkt));
> +	hvnd_init_hdr(&pkt.hdr,
> +		      sizeof(pkt) -
> +		      sizeof(struct ndv_packet_hdr_control_1),
> +		      uctx->create_pkt.handle.local,
> +		      uctx->create_pkt.handle.remote,
> +		      IOCTL_ND_CONNECTOR_GET_PRIVATE_DATA, 0, 0, 0);
> +
> +	/*
> +	 * Now fill in the ioctl section.
> +	 */
> +	pkt.ioctl.in.version = ND_VERSION_1;
> +	pkt.ioctl.in.reserved = 0;
> +	pkt.ioctl.in.handle = connector_handle;
> +
> +	ret = hvnd_send_ioctl_pkt(nd_dev, &pkt.hdr, sizeof(pkt), (u64)&pkt);
> +
> +	if (ret)
> +		goto err;
> +
> +	memcpy(priv_data, pkt.ioctl.out, MAX_PRIVATE_DATA_LEN);
> +	return 0;
> +
> +err:
> +	return ret;
> +}
> +
> +int hvnd_connector_get_peer_addr(struct hvnd_dev *nd_dev,
> +			struct hvnd_ucontext *uctx,
> +			u64 connector_handle,
> +			union nd_sockaddr_inet *peer_addr)
> +{
> +	struct pkt_nd_connector_get_peer_addr pkt;
> +	int ret;
> +
> +
> +	// KYS try to avoid having to zero everything
> +	memset(&pkt, 0, sizeof(pkt));
> +	hvnd_init_hdr(&pkt.hdr,
> +		      sizeof(pkt) -
> +		      sizeof(struct ndv_packet_hdr_control_1),
> +		      uctx->create_pkt.handle.local,
> +		      uctx->create_pkt.handle.remote,
> +		      IOCTL_ND_CONNECTOR_GET_PEER_ADDRESS, 0, 0, 0);
> +
> +	/*
> +	 * Now fill in the ioctl section.
> +	 */
> +	pkt.ioctl.in.version = ND_VERSION_1;
> +	pkt.ioctl.in.reserved = 0;
> +	pkt.ioctl.in.handle = connector_handle;
> +
> +	ret = hvnd_send_ioctl_pkt(nd_dev, &pkt.hdr, sizeof(pkt), (u64)&pkt);
> +
> +	if (ret)
> +		goto err;
> +
> +	memcpy(peer_addr, &pkt.ioctl.out, sizeof(union nd_sockaddr_inet));
> +	return 0;
> +
> +err:
> +	return ret;
> +}
> +
> +int hvnd_connector_get_local_addr(struct hvnd_dev *nd_dev,
> +			struct hvnd_ucontext *uctx,
> +			u64 connector_handle,
> +			union nd_sockaddr_inet *addr)
> +{
> +	struct pkt_nd_connector_get_addr pkt;
> +	int ret;
> +
> +	// KYS try to avoid having to zero everything
> +	memset(&pkt, 0, sizeof(pkt));
> +	hvnd_init_hdr(&pkt.hdr,
> +		      sizeof(pkt) -
> +		      sizeof(struct ndv_packet_hdr_control_1),
> +		      uctx->create_pkt.handle.local,
> +		      uctx->create_pkt.handle.remote,
> +		      IOCTL_ND_CONNECTOR_GET_ADDRESS, 0, 0, 0);
> +
> +	/*
> +	 * Now fill in the ioctl section.
> +	 */
> +	pkt.ioctl.in.version = ND_VERSION_1;
> +	pkt.ioctl.in.reserved = 0;
> +	pkt.ioctl.in.handle = connector_handle;
> +
> +	ret = hvnd_send_ioctl_pkt(nd_dev, &pkt.hdr, sizeof(pkt), (u64)&pkt);
> +
> +	if (ret)
> +		goto err;
> +
> +	memcpy(addr, &pkt.ioctl.out, sizeof(union nd_sockaddr_inet));
> +	return 0;
> +
> +err:
> +	return ret;
> +}
> +
> +
> +int hvnd_connector_notify_disconnect(struct hvnd_dev *nd_dev,
> +			struct hvnd_ucontext *uctx,
> +			u64 connector_handle, struct hvnd_ep_obj *ep)
> +{
> +	struct pkt_nd_connector_notify_disconnect pkt;
> +	int ret;
> +	union ndv_context_handle irp_fhandle;
> +
> +	irp_fhandle .local = ep->local_irp;
> +
> +	hvnd_init_hdr(&pkt.hdr,
> +		      sizeof(pkt) -
> +		      sizeof(struct ndv_packet_hdr_control_1),
> +		      uctx->create_pkt.handle.local,
> +		      uctx->create_pkt.handle.remote,
> +		      IOCTL_ND_CONNECTOR_NOTIFY_DISCONNECT, 0, 0,
> +		      irp_fhandle.val64);
> +
> +	/*
> +	 * Now fill in the ioctl section.
> +	 */
> +	pkt.ioctl.in.version = ND_VERSION_1;
> +	pkt.ioctl.in.reserved = 0;
> +	pkt.ioctl.in.handle = connector_handle;
> +
> +	ret = hvnd_send_ioctl_pkt(nd_dev, &pkt.hdr, sizeof(pkt), (u64)&pkt);
> +
> +	if (ret)
> +		goto err;
> +
> +	return 0;
> +
> +err:
> +	return ret;
> +}
> +
> +
> +//ASYNCH call
> +int hvnd_connector_disconnect(struct hvnd_dev *nd_dev,
> +			struct hvnd_ucontext *uctx,
> +			u64 connector_handle, struct hvnd_ep_obj *ep)
> +{
> +	struct pkt_nd_connector_disconnect pkt;
> +	int ret;
> +	union ndv_context_handle irp_fhandle;
> +
> +	irp_fhandle.local = ep->local_irp;
> +
> +
> +	hvnd_init_hdr(&pkt.hdr,
> +		      sizeof(pkt) -
> +		      sizeof(struct ndv_packet_hdr_control_1),
> +		      uctx->create_pkt.handle.local,
> +		      uctx->create_pkt.handle.remote,
> +		      IOCTL_ND_CONNECTOR_DISCONNECT, 0, 0, irp_fhandle.val64);
> +
> +	/*
> +	 * Now fill in the ioctl section.
> +	 */
> +	pkt.ioctl.in.version = ND_VERSION_1;
> +	pkt.ioctl.in.reserved = 0;
> +	pkt.ioctl.in.handle = connector_handle;
> +
> +	ret = hvnd_send_ioctl_pkt(nd_dev, &pkt.hdr, sizeof(pkt), (u64)&pkt);
> +
> +	if (ret)
> +		goto err;
> +
> +	return 0;
> +
> +err:
> +	return ret;
> +}
> +
> +/*
> + * QP operations.
> + */
> +int hvnd_create_qp(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
> +		   struct hvnd_qp *qp)
> +{
> +	int ret;
> +	struct pkt_nd_create_qp *pkt;
> +	int num_pfn, num_db_pfn;
> +	int qp_pkt_size;
> +	unsigned int  offset;
> +	u32 ext_data_offset;
> +	u32 ext_data_size;
> +
> +	/*
> +	 * Now create QP.
> +	 * First compute the number of PFNs we need to accomodate:
> +	 * One each for door bell and arm_sn and pages in cq buffer.
> +	 */
> +	offset = offset_in_page(qp->qp_buf);
> +	num_pfn = DIV_ROUND_UP(offset + qp->buf_size, PAGE_SIZE);
> +
> +	offset = offset_in_page(qp->db_addr);
> +	num_db_pfn = DIV_ROUND_UP(offset + 4, PAGE_SIZE);
> +
> +	qp_pkt_size = sizeof(struct pkt_nd_create_qp) +
> +		(num_pfn  * sizeof(u64));
> +
> +	hvnd_debug("CREATE QP, num pfns is %d\n", num_pfn);
> +	hvnd_debug("CREATE QP, num DB pfns is %d\n", num_db_pfn);
> +
> +	pkt = kzalloc(qp_pkt_size, GFP_KERNEL);
> +
> +	if (!pkt)
> +		return -ENOMEM;
> +
> +	hvnd_debug("offset of nd_create_qp is %d\n",
> +		(int)offsetof(struct pkt_nd_create_qp, ioctl.input));
> +
> +	ext_data_offset = offsetof(struct pkt_nd_create_qp, ext_data) -
> +				sizeof(struct ndv_packet_hdr_control_1);
> +
> +	ext_data_size = sizeof(struct create_qp_ext_data) +
> +		(num_pfn  * sizeof(u64));
> +
> +	hvnd_init_hdr(&pkt->hdr,
> +		      qp_pkt_size -
> +		      sizeof(struct ndv_packet_hdr_control_1),
> +		      uctx->create_pkt.handle.local,
> +		      uctx->create_pkt.handle.remote,
> +		      IOCTL_ND_QP_CREATE,
> +		      ext_data_size,
> +		      ext_data_offset,
> +		      0);
> +
> +	/*
> +	 * Now fill out the ioctl section.
> +	 */
> +
> +	pkt->ioctl.input.hdr.version = ND_VERSION_1;
> +
> +	if (qp->max_inline_data > nd_dev->query_pkt.ioctl.ad_info.inline_request_threshold)
> +		qp->max_inline_data = nd_dev->query_pkt.ioctl.ad_info.inline_request_threshold;
> +	pkt->ioctl.input.hdr.cb_max_inline_data = qp->max_inline_data;
> +
> +	hvnd_debug("pkt->ioctl.input.hdr.cb_max_inline_data=%d\n",
> +		   pkt->ioctl.input.hdr.cb_max_inline_data);
> +
> +	pkt->ioctl.input.hdr.ce_mapping_cnt = MLX4_IB_CREATE_QP_MAPPINGS_MAX;
> +	pkt->ioctl.input.hdr.cb_mapping_offset = sizeof(union create_qp_ioctl);
> +
> +	pkt->ioctl.input.hdr.initiator_queue_depth = qp->initiator_q_depth;
> +	pkt->ioctl.input.hdr.max_initiator_request_sge =
> +		qp->initiator_request_sge;
> +
> +	hvnd_debug("recv cq handle is %p\n", (void *)qp->receive_cq_handle);
> +	hvnd_debug("send cq handle is %p\n", (void *)qp->initiator_cq_handle);
> +	hvnd_debug("pd handle is %p\n", (void *)qp->pd_handle);
> +	pkt->ioctl.input.hdr.receive_cq_handle = qp->receive_cq_handle;
> +	pkt->ioctl.input.hdr.initiator_cq_handle = qp->initiator_cq_handle;
> +	pkt->ioctl.input.hdr.pd_handle = qp->pd_handle;
> +
> +
> +	hvnd_debug("ce_mapping cnt is %d\n",
> +		   pkt->ioctl.input.hdr.ce_mapping_cnt);
> +	hvnd_debug("cb_mapping offset is %d\n",
> +		   pkt->ioctl.input.hdr.cb_mapping_offset);
> +
> +	pkt->ioctl.input.receive_queue_depth = qp->receive_q_depth;
> +	pkt->ioctl.input.max_receive_request_sge = qp->receive_request_sge;
> +
> +
> +	pkt->mappings.qp_in.mappings[MLX4_IB_CREATE_QP_BUF].map_memory.map_type = ND_MAP_MEMORY;
> +	pkt->mappings.qp_in.mappings[MLX4_IB_CREATE_QP_BUF].map_memory.access_type = ND_MODIFY_ACCESS;
> +	pkt->mappings.qp_in.mappings[MLX4_IB_CREATE_QP_BUF].map_memory.address = (u64)qp->qp_buf;
> +	pkt->mappings.qp_in.mappings[MLX4_IB_CREATE_QP_BUF].map_memory.cb_length = qp->buf_size;
> +
> +	pkt->mappings.qp_in.mappings[MLX4_IB_CREATE_QP_DB].map_memory.map_type = ND_MAP_MEMORY_COALLESCE;
> +	pkt->mappings.qp_in.mappings[MLX4_IB_CREATE_QP_DB].map_memory.access_type = ND_WRITE_ACCESS;
> +	pkt->mappings.qp_in.mappings[MLX4_IB_CREATE_QP_DB].map_memory.address = (u64)qp->db_addr;
> +	pkt->mappings.qp_in.mappings[MLX4_IB_CREATE_QP_DB].map_memory.cb_length = 4;
> +
> +	pkt->mappings.qp_in.log_sq_bb_count = qp->log_sq_bb_count;
> +	pkt->mappings.qp_in.log_sq_stride = qp->log_sq_stride;
> +	pkt->mappings.qp_in.sq_no_prefetch = qp->sq_no_prefetch;
> +
> +
> +	/*
> +	 * Fill in the extended data.
> +	 */
> +
> +	pkt->ext_data.cnt = 2;
> +	pkt->ext_data.fields[MLX4_IB_CREATE_QP_BUF].size =
> +		sizeof(struct gpa_range) + (num_pfn * sizeof(u64));
> +	pkt->ext_data.fields[MLX4_IB_CREATE_QP_BUF].offset =
> +		offsetof(struct create_qp_ext_data, qpbuf_gpa);
> +
> +	pkt->ext_data.fields[MLX4_IB_CREATE_QP_DB].size =
> +		sizeof(struct qp_db_gpa);
> +	pkt->ext_data.fields[MLX4_IB_CREATE_QP_DB].offset =
> +		offsetof(struct create_qp_ext_data, db_gpa);
> +
> +	/*
> +	 * Fill up the gpa range for qp  buffer.
> +	 */
> +
> +	pkt->ext_data.db_gpa.byte_count = 4; // KYS 8 or 16?
> +	pkt->ext_data.db_gpa.byte_offset = offset_in_page(qp->db_addr);
> +	user_va_init_pfn(&pkt->ext_data.db_gpa.pfn_array[0], qp->db_umem);
> +
> +	pkt->ext_data.qpbuf_gpa.byte_count = qp->buf_size;
> +	pkt->ext_data.qpbuf_gpa.byte_offset = offset_in_page(qp->qp_buf);
> +	user_va_init_pfn(&pkt->ext_data.qpbuf_gpa.pfn_array[0], qp->umem);
> +
> +	ret = hvnd_send_ioctl_pkt(nd_dev, &pkt->hdr, qp_pkt_size, (u64)pkt);
> +
> +	if (ret)
> +		goto cr_qp_err;
> +
> +	/*
> +	 * Copy the necessary response from the host.
> +	 */
> +	qp->qp_handle = pkt->ioctl.resrc_desc.handle;
> +
> +	qp->qpn = pkt->mappings.qp_resp.qpn;
> +	qp->max_send_wr = pkt->mappings.qp_resp.max_send_wr;
> +	qp->max_recv_wr = pkt->mappings.qp_resp.max_recv_wr;
> +	qp->max_send_sge = pkt->mappings.qp_resp.max_send_sge;
> +	qp->max_recv_sge = pkt->mappings.qp_resp.max_recv_sge;
> +
> +
> +	hvnd_debug("qp->max_send_wr=%d max_recv_wr=%d max_send_sge=%d max_recv_sge=%d max_inline_data=%d\n",
> +		   qp->max_send_wr, qp->max_recv_wr, qp->max_send_sge,
> +		   qp->max_recv_sge, qp->max_inline_data);
> +
> +	ret = insert_handle(nd_dev, &nd_dev->qpidr, qp, qp->qpn);
> +
> +	if (ret)
> +		goto cr_qp_err;
> +
> +	hvnd_debug("QP create after success qpn:%d qp:%p handle:%llu\n",
> +		   qp->qpn, qp, qp->qp_handle);
> +
> +cr_qp_err:
> +	kfree(pkt);
> +	return ret;
> +}
> +
> +int hvnd_free_qp(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
> +		 struct hvnd_qp *qp)
> +{
> +	int ret;
> +
> +	ret = hvnd_free_handle(nd_dev, uctx, qp->qp_handle, IOCTL_ND_QP_FREE);
> +	if (ret == 0)
> +		remove_handle(nd_dev, &nd_dev->qpidr, qp->qpn);
> +	return ret;
> +}
> +
> +int hvnd_flush_qp(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
> +		  struct hvnd_qp *qp)
> +{
> +	struct pkt_nd_flush_qp pkt;
> +	int ret;
> +
> +	// KYS try to avoid having to zero everything
> +	memset(&pkt, 0, sizeof(pkt));
> +	hvnd_init_hdr(&pkt.hdr,
> +		      sizeof(pkt) -
> +		      sizeof(struct ndv_packet_hdr_control_1),
> +		      uctx->create_pkt.handle.local,
> +		      uctx->create_pkt.handle.remote,
> +		      IOCTL_ND_QP_FLUSH, 0, 0, 0);
> +
> +	/*
> +	 * Now fill in the ioctl section.
> +	 */
> +	pkt.ioctl.in.version = ND_VERSION_1;
> +	pkt.ioctl.in.reserved = 0;
> +	pkt.ioctl.in.handle = qp->qp_handle;
> +
> +	ret = hvnd_send_ioctl_pkt(nd_dev, &pkt.hdr, sizeof(pkt), (u64)&pkt);
> +
> +	if (ret)
> +		goto err;
> +
> +	return 0;
> +
> +err:
> +	return ret;
> +}
> +
> +
> +int hvnd_bind_nic(struct hvnd_dev *nd_dev, bool un_bind, char *ip_addr,
> +		  char *mac_addr)
> +{
> +	int ret;
> +	int pkt_type = NDV_PKT_ID1_BIND;
> +
> +	/*
> +	 * Send the bind information over to the host.
> +	 * For now, we will have a single ip and MAC address that we
> +	 * will deal with. Down the road we will need to expand support
> +	 * for multiple IP and MAC addresses and also deal with changing
> +	 * IP addresses.
> +	 */
> +
> +	NDV_ADD_PACKET_OPTION(pkt_type, NDV_PACKET_OPTIONS_REQUIRES_PASSIVE);
> +	hvnd_debug("bind packet type is %d ID:%d\n",
> +		   pkt_type, NDV_PACKET_TYPE_ID(pkt_type));
> +	nd_dev->bind_pkt.pkt_hdr.packet_type = pkt_type;
> +
> +	nd_dev->bind_pkt.pkt_hdr.hdr_sz = sizeof(struct ndv_pkt_hdr_bind_1);
> +	hvnd_debug("bind packet size is %d\n",
> +		   (int)sizeof(struct ndv_pkt_hdr_bind_1));
> +	nd_dev->bind_pkt.pkt_hdr.data_sz = 0;
> +	nd_dev->bind_pkt.unbind = un_bind;
> +	nd_dev->bind_pkt.ip_address.address_family = AF_INET;
> +	nd_dev->bind_pkt.ip_address.ipv4.sin_family = AF_INET;
> +	nd_dev->bind_pkt.ip_address.ipv4.sin_port = 0;
> +	nd_dev->bind_pkt.ip_address.ipv4.sin_addr.s_addr = *(unsigned int *)ip_addr;
> +
> +	nd_dev->bind_pkt.phys_addr.length = ETH_ALEN;
> +	memcpy(nd_dev->bind_pkt.phys_addr.addr, mac_addr, ETH_ALEN);
> +
> +	/*
> +	 * This is the adapter handle; needs to be unique for each
> +	 * MAC, ip address tuple.
> +	 */
> +	nd_dev->bind_pkt.guest_id = (u64)nd_dev;
> +
> +	ret = hvnd_send_packet(nd_dev, &nd_dev->bind_pkt,
> +				sizeof(struct ndv_pkt_hdr_bind_1),
> +				(u64)NULL,
> +				true);
> +	return ret;
> +}
> +
> +int hvnd_init_resources(struct hvnd_dev *nd_dev)
> +{
> +	unsigned long mmio_sz;
> +	struct resource *resrc;
> +	int ret = -ENOMEM;
> +
> +	resrc = &iomem_resource;
> +
> +	mmio_sz = nd_dev->hvdev->channel->offermsg.offer.mmio_megabytes *
> +		1024 * 1024;
> +	nd_dev->mmio_sz = mmio_sz;
> +	nd_dev->mmio_resource.name = KBUILD_MODNAME;
> +	nd_dev->mmio_resource.flags = IORESOURCE_MEM | IORESOURCE_BUSY;
> +
> +	ret = allocate_resource(resrc, &nd_dev->mmio_resource,
> +				mmio_sz, 0, -1, mmio_sz, NULL, NULL);
> +
> +	if (ret) {
> +		hvnd_error("Unable to allocate mmio resources\n");
> +		return ret;
> +	}
> +	hvnd_debug("MMIO start is %p\n", (void *)nd_dev->mmio_resource.start);
> +
> +	/*
> +	 * Send the mmio information over to the host.
> +	 */
> +	nd_dev->resources.pkt_hdr.packet_type = NDV_PKT_ID1_INIT_RESOURCES;
> +	nd_dev->resources.pkt_hdr.hdr_sz = sizeof(union ndv_packet_hdr);
> +	nd_dev->resources.pkt_hdr.data_sz = 0;
> +
> +	nd_dev->resources.io_space_sz_mb = mmio_sz;
> +	nd_dev->resources.io_space_start = nd_dev->mmio_resource.start;
> +
> +	ret = hvnd_send_packet(nd_dev, &nd_dev->resources,
> +				sizeof(struct ndv_pkt_hdr_init_resources_1),
> +				(u64)NULL,
> +				true);
> +	return ret;
> +}
> +
> +int hvnd_query_adaptor(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx)
> +{
> +	struct pkt_nd_query_adaptor *pkt;
> +	int ret;
> +	int pkt_type;
> +	struct ib_device_attr *props = &nd_dev->ibdev.attrs;
> +	struct adapter_info_v2 *adap_info = &nd_dev->query_pkt.ioctl.ad_info;
> +
> +	hvnd_debug("Performing Adapter query nd_dev=%p\n", nd_dev);
> +
> +	// check if there is a need to do query
> +	if (nd_dev->query_pkt_set)
> +		return 0;
> +
> +	// need a lock, multiple process can call this at the same time
> +
> +	down(&nd_dev->query_pkt_sem);
> +	if (nd_dev->query_pkt_set) {
> +		up(&nd_dev->query_pkt_sem);
> +		return 0;
> +	}
> +
> +	/*
> +	 * Now query the adaptor.
> +	 */
> +
> +	pkt = &nd_dev->query_pkt;
> +
> +	pkt_type = NDV_PKT_ID1_CONTROL;
> +	NDV_ADD_PACKET_OPTION(pkt_type, NDV_PACKET_OPTIONS_REQUIRES_PASSIVE);
> +
> +	pkt->hdr.pkt_hdr.packet_type = pkt_type;
> +	pkt->hdr.pkt_hdr.hdr_sz = sizeof(struct ndv_packet_hdr_control_1);
> +	pkt->hdr.pkt_hdr.data_sz = sizeof(struct pkt_nd_query_adaptor) -
> +				   sizeof(struct ndv_packet_hdr_control_1);
> +
> +
> +	pkt->hdr.file_handle.local = uctx->file_handle.local;
> +	pkt->hdr.file_handle.remote = uctx->file_handle.remote;
> +
> +	pkt->hdr.irp_handle.val64 = 0;
> +
> +	pkt->hdr.io_cntrl_code = IOCTL_ND_ADAPTER_QUERY;
> +	pkt->hdr.output_buf_sz = sizeof(struct nd_adap_query_ioctl);
> +	pkt->hdr.input_buf_sz = sizeof(struct nd_adap_query_ioctl);
> +	pkt->hdr.input_output_buf_offset = 0;
> +	memset(&pkt->ioctl.ad_q, 0, sizeof(struct nd_adap_query_ioctl));
> +
> +	pkt->ioctl.ad_q.version = ND_VERSION_1;
> +	pkt->ioctl.ad_q.info_version = ND_VERSION_2;
> +	pkt->ioctl.ad_q.adapter_handle = uctx->adaptor_hdl;
> +
> +	ret = hvnd_send_packet(nd_dev, pkt,
> +				sizeof(struct pkt_nd_query_adaptor),
> +				(unsigned long)pkt, true);
> +
> +	hvnd_debug("pkt->ioctl.ad_info.inline_request_threshold=%d\n",
> +		   pkt->ioctl.ad_info.inline_request_threshold);
> +	nd_dev->query_pkt_set = true;
> +
> +	// how about host returning PENDING
> +	up(&nd_dev->query_pkt_sem);
> +
> +	if (ret)
> +		return ret;
> +
> +	hvnd_debug("Query Adaptor Succeeded\n");
> +
> +	/*
> +	 * Cache the relevant properties out.
> +	 */
> +	props->fw_ver = 0;
> +	props->device_cap_flags    = 0;
> +	props->vendor_id           =  0x15b3;
> +	props->vendor_part_id      = adap_info->device_id;
> +	props->max_mr_size         = ~0ull;
> +	props->page_size_cap       = PAGE_SIZE;
> +	props->max_qp              = 16384;
> +	props->max_qp_wr           = min(adap_info->max_recv_q_depth,
> +					 adap_info->max_initiator_q_depth);
> +	props->max_sge             = min(adap_info->max_initiator_sge,
> +					 adap_info->max_recv_sge);
> +	props->max_cq              = 0x1FFFF;
> +	props->max_cqe             = adap_info->max_completion_q_depth;
> +	props->max_mr              = 16384;
> +	props->max_pd              = 16384;
> +	props->max_qp_rd_atom      = adap_info->max_inbound_read_limit;
> +	props->max_qp_init_rd_atom = adap_info->max_outbound_read_limit;
> +	props->max_res_rd_atom     = props->max_qp_rd_atom * props->max_qp;
> +	props->max_srq             = 16384;
> +	props->max_srq_wr          = adap_info->max_recv_q_depth;
> +	props->max_srq_sge         = adap_info->max_recv_sge;
> +	return 0;
> +}
> +
> +
> +int  hvnd_create_pd(struct hvnd_ucontext *uctx, struct hvnd_dev *nd_dev,
> +		    struct hvnd_ib_pd *hvnd_pd)
> +{
> +	struct pkt_nd_pd_create *pkt = &uctx->pd_cr_pkt;
> +	int ret;
> +	int pkt_type;
> +
> +	hvnd_debug("Create Protection Domain\n");
> +
> +	pkt_type = NDV_PKT_ID1_CONTROL;
> +	NDV_ADD_PACKET_OPTION(pkt_type, NDV_PACKET_OPTIONS_REQUIRES_PASSIVE);
> +
> +	pkt->hdr.pkt_hdr.packet_type = pkt_type;
> +	pkt->hdr.pkt_hdr.hdr_sz = sizeof(struct ndv_packet_hdr_control_1);
> +	pkt->hdr.pkt_hdr.data_sz = sizeof(struct pkt_nd_pd_create) -
> +				   sizeof(struct ndv_packet_hdr_control_1);
> +
> +	hvnd_debug("pdcreate packet size: %d\n",
> +		   (int)sizeof(struct pkt_nd_pd_create));
> +	hvnd_debug("pdcreate hdr size: %d\n",
> +		   (int)sizeof(struct ndv_packet_hdr_control_1));
> +	hvnd_debug("pdcreate data size: %d\n", pkt->hdr.pkt_hdr.data_sz);
> +
> +	pkt->hdr.file_handle.local = uctx->create_pkt.handle.local;
> +	pkt->hdr.file_handle.remote = uctx->create_pkt.handle.remote;
> +
> +	hvnd_debug("create pd uctx is %p\n", uctx);
> +	hvnd_debug("create pd local file is %d\n",
> +		   uctx->create_pkt.handle.local);
> +	hvnd_debug("create pd local file is %d\n",
> +		   uctx->create_pkt.handle.remote);
> +
> +	pkt->hdr.irp_handle.val64 = 0;
> +	pkt->hdr.io_cntrl_code = IOCTL_ND_PD_CREATE;
> +
> +	pkt->hdr.output_buf_sz = sizeof(struct nd_create_pd_ioctl);
> +	pkt->hdr.input_buf_sz =  sizeof(struct nd_create_pd_ioctl);
> +	pkt->hdr.input_output_buf_offset = 0;
> +
> +	hvnd_debug("output/input buf size: %d\n", pkt->hdr.output_buf_sz);
> +
> +	/*
> +	 * Fill the ioctl section.
> +	 */
> +	pkt->ioctl.in.version = ND_VERSION_1;
> +	pkt->ioctl.in.reserved = 0;
> +	pkt->ioctl.in.handle = uctx->adaptor_hdl;
> +
> +
> +	ret = hvnd_send_packet(nd_dev, pkt,
> +				sizeof(struct pkt_nd_pd_create),
> +				(unsigned long)pkt, true);
> +
> +	if (ret)
> +		return ret;
> +
> +	if (pkt->hdr.pkt_hdr.status != 0) {
> +		hvnd_error("Create PD failed; status is %d\n",
> +			pkt->hdr.pkt_hdr.status);
> +		return -EINVAL;
> +	}
> +	if (pkt->hdr.io_status != 0) {
> +		hvnd_error("Create PD failed;io status is %d\n",
> +			pkt->hdr.io_status);
> +		return -EINVAL;
> +	}
> +
> +	hvnd_debug("Create PD Succeeded\n");
> +
> +	hvnd_debug("pd_handle is %p\n", (void *)pkt->ioctl.resp.pd_handle);
> +	hvnd_debug("pdn is %d\n", (int)pkt->ioctl.resp.pdn);
> +
> +	hvnd_pd->pdn = pkt->ioctl.resp.pdn;
> +	hvnd_pd->handle = pkt->ioctl.out_handle;
> +
> +	return 0;
> +}
> +
> +int hvnd_cancel_io(struct hvnd_ep_obj *ep_object)
> +{
> +	struct pkt_nd_cancel_io pkt;
> +	int ret;
> +	u32 ioctl;
> +
> +	switch (ep_object->type) {
> +	case ND_LISTENER:
> +		hvnd_debug("LISTENER I/O Cancelled\n");
> +		ioctl = IOCTL_ND_LISTENER_CANCEL_IO;
> +		break;
> +	case ND_CONNECTOR:
> +		hvnd_debug("CONNECTOR I/O Cancelled\n");
> +		ioctl = IOCTL_ND_CONNECTOR_CANCEL_IO;
> +		break;
> +	case ND_MR:
> +		hvnd_debug("MR I/O Cancelled\n");
> +		ioctl = IOCTL_ND_MR_CANCEL_IO;
> +		break;
> +	case ND_CQ:
> +		hvnd_debug("CQ I/O Cancelled\n");
> +		ioctl = IOCTL_ND_CQ_CANCEL_IO;
> +		break;
> +	default:
> +		hvnd_error("UNKNOWN object type\n");
> +		return -EINVAL;
> +	}
> +
> +	// KYS try to avoid having to zero everything
> +	memset(&pkt, 0, sizeof(pkt));
> +	hvnd_init_hdr(&pkt.hdr,
> +		      sizeof(pkt) -
> +		      sizeof(struct ndv_packet_hdr_control_1),
> +		      ep_object->uctx->create_pkt.handle.local,
> +		      ep_object->uctx->create_pkt.handle.remote,
> +		      ioctl, 0, 0, 0);
> +
> +	/*
> +	 * Now fill in the ioctl section.
> +	 */
> +	pkt.ioctl.in.version = ND_VERSION_1;
> +	pkt.ioctl.in.reserved = 0;
> +	pkt.ioctl.in.handle = ep_object->ep_handle;
> +	hvnd_debug("cancel io handle is %p\n", (void *)ep_object->ep_handle);
> +
> +	ret = hvnd_send_ioctl_pkt(ep_object->nd_dev, &pkt.hdr,
> +				sizeof(pkt),
> +				(u64)&pkt);
> +
> +	if (ret)
> +		goto err;
> +
> +	/*
> +	 * Now that we have cancelled all I/Os,
> +	 */
> +
> +	return 0;
> +
> +err:
> +	hvnd_error("cancel I/O operation failed\n");
> +	return ret;
> +}
> +
> +
> +int hvnd_free_handle(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
> +			u64 handle, u32 ioctl)
> +{
> +	struct pkt_nd_free_handle pkt;
> +	int ret;
> +
> +	hvnd_debug("Freeing handle ioctl is %s; handle is %p\n",
> +		hvnd_get_op_name(ioctl), (void *)handle);
> +
> +	hvnd_debug("uctx is %p\n", uctx);
> +	hvnd_debug("nd_dev is %p\n", nd_dev);
> +
> +	// KYS try to avoid having to zero everything
> +	memset(&pkt, 0, sizeof(pkt));
> +	hvnd_init_hdr(&pkt.hdr,
> +		      sizeof(pkt) -
> +		      sizeof(struct ndv_packet_hdr_control_1),
> +		      uctx->create_pkt.handle.local,
> +		      uctx->create_pkt.handle.remote,
> +		      ioctl, 0, 0, 0);
> +
> +	/*
> +	 * Now fill in the ioctl section.
> +	 */
> +	pkt.ioctl.in.version = ND_VERSION_1;
> +	pkt.ioctl.in.reserved = 0;
> +	pkt.ioctl.in.handle = handle;
> +
> +	ret = hvnd_send_ioctl_pkt(nd_dev, &pkt.hdr, sizeof(pkt), (u64)&pkt);
> +
> +	if (ret)
> +		goto err;
> +
> +	return 0;
> +
> +err:
> +	hvnd_error("%s: ret=%d\n", __func__, ret);
> +	return ret;
> +}
> +
> +int hvnd_negotiate_version(struct hvnd_dev *nd_dev)
> +{
> +	union ndv_packet_init *pkt = &nd_dev->init_pkt;
> +	int ret;
> +
> +	nd_dev->negotiated_version = NDV_PROTOCOL_VAERSION_INVALID;
> +
> +	pkt->packet_type = NDV_PACKET_TYPE_INIT;
> +	pkt->protocol_version = NDV_PROTOCOL_VERSION_CURRENT;
> +	pkt->flags = 0; // KYS are the flags 0?
> +
> +	ret = hvnd_send_packet(nd_dev, pkt,
> +			       sizeof(union ndv_packet_init), (u64)NULL, true);
> +
> +	return ret;
> +}
> +
> +void hvnd_callback(void *context)
> +{
> +	struct hv_device *dev = context;
> +	struct hvnd_dev *nd_dev = hv_get_drvdata(dev);
> +	int copy_sz = 0;
> +	struct ndv_packet_hdr_control_1 *ctrl_hdr;
> +	union ndv_packet_init *pkt_init;
> +	u32 recvlen;
> +	u32 local_irp;
> +	u64 requestid;
> +	u32 *pkt_type;
> +	u32 pkt_id;
> +	struct hvnd_ep_obj *ep_object;
> +	struct incoming_pkt *incoming_pkt; /* Used only for asynch calls */
> +	char *incoming_pkt_start;
> +	struct vmpacket_descriptor *desc;
> +	int status;
> +	struct hvnd_cookie *hvnd_cookie;
> +	unsigned long flags;
> +
> +	vmbus_recvpacket_raw(dev->channel, hvnd_recv_buffer,
> +			 (PAGE_SIZE * 4), &recvlen, &requestid);
> +
> +	if (recvlen <= 0)
> +		return;
> +
> +	desc = (struct vmpacket_descriptor *)hvnd_recv_buffer;
> +	incoming_pkt_start = hvnd_recv_buffer + (desc->offset8 << 3);
> +	recvlen -= desc->offset8 << 3;
> +
> +	pkt_type = (u32 *)incoming_pkt_start;
> +	pkt_id = *pkt_type;
> +	if (pkt_id != NDV_PACKET_TYPE_INIT)
> +		pkt_id = NDV_PACKET_TYPE_ID(pkt_id);
> +
> +	switch (pkt_id) {
> +	case NDV_PACKET_TYPE_INIT:
> +		/*
> +		 * Host is responding to our init packet.
> +		 */
> +		pkt_init = (union ndv_packet_init *)incoming_pkt_start;
> +		nd_dev->negotiated_version = pkt_init->protocol_version;
> +		copy_sz = 0;
> +		break;
> +
> +	case NDV_PKT_ID1_INIT_RESOURCES:
> +		copy_sz = 0;
> +		break;
> +
> +	case NDV_PKT_ID1_BIND:
> +		nd_dev->bind_pkt.pkt_hdr.status =
> +			((union ndv_packet_hdr *) incoming_pkt_start)->status;
> +		copy_sz = 0;
> +		break;
> +
> +	case NDV_PKT_ID1_COMPLETE:
> +		ctrl_hdr = (struct ndv_packet_hdr_control_1 *)incoming_pkt_start;
> +		status = ctrl_hdr->io_status;
> +
> +		local_irp = ctrl_hdr->irp_handle.local;
> +		ep_object = (struct hvnd_ep_obj *)map_irp_to_ctx(nd_dev,
> +								 local_irp);
> +
> +		if (!ep_object) {
> +			hvnd_error("irp could not be mapped; irp is %d ioctl is %s",
> +				local_irp,
> +				hvnd_get_op_name(ctrl_hdr->io_cntrl_code));
> +			goto complete;
> +		}
> +
> +		if (ctrl_hdr->io_cntrl_code != IOCTL_ND_CQ_NOTIFY)
> +			hvnd_debug("completion packet; iostatus is %x, ioctl is %s",
> +				   ctrl_hdr->io_status,
> +				   hvnd_get_op_name(ctrl_hdr->io_cntrl_code));
> +
> +		switch (ctrl_hdr->io_cntrl_code) {
> +
> +		case IOCTL_ND_CQ_NOTIFY:
> +			hvnd_process_cq_event_complete(ep_object, status);
> +
> +			ep_del_work_pending(ep_object);
> +			goto complete;
> +
> +		case IOCTL_ND_CONNECTOR_ACCEPT:
> +
> +			hvnd_process_connector_accept(ep_object, status);
> +
> +			ep_del_work_pending(ep_object);
> +			goto complete;
> +
> +		case IOCTL_ND_CONNECTOR_DISCONNECT:
> +			hvnd_debug("disconnected: ep opj is %p; status: %d\n",
> +				   ep_object, status);
> +			hvnd_process_disconnect(ep_object, status);
> +
> +			ep_del_work_pending(ep_object);
> +			goto complete;
> +
> +		default:
> +			break;
> +		}
> +
> +		/*
> +		 * This is the completion notification;
> +		 * the IRP cookie is the state through which
> +		 * we will invoke the callback.
> +		 */
> +		incoming_pkt = kmalloc(recvlen + sizeof(struct incoming_pkt),
> +				       GFP_ATOMIC);
> +		if (incoming_pkt == NULL) {
> +			hvnd_error("Could not alloc memory in callback\n");
> +			ep_del_work_pending(ep_object);
> +			goto complete;
> +		}
> +		memcpy(incoming_pkt->pkt, incoming_pkt_start, recvlen);
> +
> +		spin_lock_irqsave(&ep_object->incoming_pkt_list_lock, flags);
> +		list_add_tail(&incoming_pkt->list_entry,
> +			      &ep_object->incoming_pkt_list);
> +		spin_unlock_irqrestore(&ep_object->incoming_pkt_list_lock,
> +				       flags);
> +
> +		schedule_work(&ep_object->wrk.work);
> +
> +		goto complete;
> +
> +	case NDV_PKT_ID1_CREATE:
> +		copy_sz = sizeof(struct ndv_pkt_hdr_create_1);
> +		break;
> +
> +	case NDV_PKT_ID1_CLEANUP:
> +		copy_sz = sizeof(struct ndv_pkt_hdr_cleanup_1);
> +		break;
> +
> +	case NDV_PKT_ID1_CONTROL:
> +		ctrl_hdr = (struct ndv_packet_hdr_control_1 *)incoming_pkt_start;
> +		status = ctrl_hdr->io_status;
> +
> +		if (ctrl_hdr->io_cntrl_code != IOCTL_ND_CQ_NOTIFY)
> +			hvnd_debug("packet; iostatus is %x ioctl is %s",
> +				ctrl_hdr->io_status, hvnd_get_op_name(ctrl_hdr->io_cntrl_code));
> +
> +		switch (ctrl_hdr->io_cntrl_code) {
> +
> +		case IOCTL_ND_PROVIDER_INIT:
> +			copy_sz = sizeof(struct pkt_nd_provider_ioctl);
> +			break;
> +
> +		case IOCTL_ND_PROVIDER_BIND_FILE:
> +			copy_sz = sizeof(struct pkt_nd_provider_ioctl);
> +			break;
> +
> +		case IOCTL_ND_ADAPTER_OPEN:
> +			copy_sz = sizeof(struct pkt_nd_open_adapter);
> +			break;
> +
> +		case IOCTL_ND_ADAPTER_CLOSE:
> +			copy_sz = sizeof(struct pkt_nd_free_handle);
> +			break;
> +
> +		case IOCTL_ND_ADAPTER_QUERY:
> +			copy_sz = sizeof(struct pkt_nd_query_adaptor);
> +			break;
> +
> +		case IOCTL_ND_PD_CREATE:
> +			copy_sz = sizeof(struct pkt_nd_pd_create);
> +			break;
> +
> +		case IOCTL_ND_PD_FREE:
> +			copy_sz = sizeof(struct pkt_nd_free_handle);
> +			break;
> +
> +		case IOCTL_ND_CQ_CREATE:
> +			copy_sz = sizeof(struct pkt_nd_create_cq);
> +			break;
> +
> +		case IOCTL_ND_CQ_FREE:
> +			copy_sz = sizeof(struct pkt_nd_free_cq);
> +			break;
> +
> +		case IOCTL_ND_CQ_NOTIFY: //FIXME check ep stop state
> +			local_irp = ctrl_hdr->irp_handle.local;
> +			ep_object = (struct hvnd_ep_obj *)
> +				map_irp_to_ctx(nd_dev, local_irp);
> +			if (!ep_object) {
> +				hvnd_error("irp could not be mapped\n");
> +				goto complete;
> +				return;
> +			}
> +			copy_sz = sizeof(struct pkt_nd_notify_cq);
> +			hvnd_process_cq_event_pending(ep_object, status);
> +			goto complete;
> +			return;
> +
> +		case IOCTL_ND_LISTENER_CREATE:
> +			copy_sz = sizeof(struct pkt_nd_cr_listener);
> +			break;
> +
> +		case IOCTL_ND_LISTENER_FREE:
> +			copy_sz = sizeof(struct pkt_nd_free_listener);
> +			break;
> +
> +		case IOCTL_ND_QP_FREE:
> +			copy_sz = sizeof(struct pkt_nd_free_handle);
> +			break;
> +
> +		case IOCTL_ND_CONNECTOR_CANCEL_IO:
> +		case IOCTL_ND_MR_CANCEL_IO:
> +		case IOCTL_ND_CQ_CANCEL_IO:
> +		case IOCTL_ND_LISTENER_CANCEL_IO:
> +			copy_sz = sizeof(struct pkt_nd_cancel_io);
> +			break;
> +
> +		case IOCTL_ND_LISTENER_BIND:
> +			copy_sz = sizeof(struct pkt_nd_bind_listener);
> +			break;
> +
> +		case IOCTL_ND_LISTENER_LISTEN:
> +			copy_sz = sizeof(struct pkt_nd_listen_listener);
> +			break;
> +
> +		case IOCTL_ND_LISTENER_GET_ADDRESS:
> +			copy_sz = sizeof(struct pkt_nd_get_addr_listener);
> +			break;
> +
> +		case IOCTL_ND_LISTENER_GET_CONNECTION_REQUEST:
> +			copy_sz = sizeof(struct pkt_nd_get_connection_listener);
> +			goto complete; // non-block
> +
> +		case IOCTL_ND_CONNECTOR_CREATE:
> +			copy_sz = sizeof(struct pkt_nd_cr_connector);
> +			break;
> +
> +		case IOCTL_ND_CONNECTOR_FREE:
> +			copy_sz = sizeof(struct pkt_nd_free_connector);
> +			break;
> +
> +		case IOCTL_ND_CONNECTOR_BIND:
> +			copy_sz = sizeof(struct pkt_nd_free_connector);
> +			break;
> +
> +		// KYS: ALERT: ASYNCH Operation
> +		case IOCTL_ND_CONNECTOR_CONNECT:
> +			copy_sz = sizeof(struct pkt_nd_connector_connect);
> +			goto complete; //non-block
> +
> +		case IOCTL_ND_CONNECTOR_COMPLETE_CONNECT:
> +			copy_sz = sizeof(struct pkt_nd_connector_connect_complete);
> +			break;
> +
> +		// KYS: ALERT: ASYNCH Operation
> +		case IOCTL_ND_CONNECTOR_ACCEPT:
> +			copy_sz = sizeof(struct pkt_nd_connector_accept);
> +			goto complete; //non-block
> +
> +		case IOCTL_ND_CONNECTOR_REJECT:
> +			copy_sz = sizeof(struct pkt_nd_connector_reject);
> +			break;
> +
> +		case IOCTL_ND_CONNECTOR_GET_READ_LIMITS:
> +			copy_sz = sizeof(struct pkt_nd_connector_get_rd_limits);
> +			break;
> +
> +		case IOCTL_ND_CONNECTOR_GET_PRIVATE_DATA:
> +			copy_sz = sizeof(struct pkt_nd_connector_get_priv_data);
> +			break;
> +
> +		case IOCTL_ND_CONNECTOR_GET_PEER_ADDRESS:
> +			copy_sz = sizeof(struct pkt_nd_connector_get_peer_addr);
> +			break;
> +
> +		case IOCTL_ND_CONNECTOR_GET_ADDRESS:
> +			copy_sz = sizeof(struct pkt_nd_connector_get_addr);
> +			break;
> +
> +		// KYS: ALERT: ASYNCH Operation
> +		case IOCTL_ND_CONNECTOR_NOTIFY_DISCONNECT:
> +			copy_sz = sizeof(struct pkt_nd_connector_notify_disconnect);
> +			goto complete; //non-block
> +
> +		// KYS: ALERT: ASYNCH Operation
> +		case IOCTL_ND_CONNECTOR_DISCONNECT:
> +			hvnd_debug("IOCTL_ND_CONNECTOR_DISCONNECT\n");
> +			copy_sz = sizeof(struct pkt_nd_connector_notify_disconnect);
> +			goto complete; // non-block
> +
> +		case IOCTL_ND_QP_CREATE:
> +			copy_sz = sizeof(struct pkt_nd_create_qp);
> +			break;
> +
> +		case IOCTL_ND_MR_CREATE:
> +			copy_sz = sizeof(struct pkt_nd_create_mr);
> +			break;
> +
> +		case IOCTL_ND_MR_FREE:
> +			copy_sz = sizeof(struct pkt_nd_free_handle);
> +			break;
> +
> +		case IOCTL_ND_MR_REGISTER:
> +			copy_sz = sizeof(struct pkt_nd_register_mr);
> +			break;
> +
> +		case IOCTL_ND_MR_DEREGISTER:
> +			copy_sz = sizeof(struct pkt_nd_deregister_mr);
> +			break;
> +
> +		case IOCTL_ND_ADAPTER_QUERY_ADDRESS_LIST:
> +			copy_sz = sizeof(struct pkt_query_addr_list);
> +			break;
> +
> +		case IOCTL_ND_QP_FLUSH:
> +			copy_sz = sizeof(struct pkt_nd_flush_qp);
> +			break;
> +
> +		default:
> +			hvnd_warn("Got unknown ioctl: %d\n",
> +				ctrl_hdr->io_cntrl_code);
> +			copy_sz = 0;
> +			break;
> +		}
> +
> +		break;
> +	default:
> +		hvnd_warn("Got an unknown packet type %d\n", *pkt_type);
> +		break;
> +	}
> +
> +	hvnd_cookie = (struct hvnd_cookie *)requestid;
> +	memcpy(hvnd_cookie->pkt, incoming_pkt_start, copy_sz);
> +	complete(&hvnd_cookie->host_event);
> +
> +complete:
> +	/* send out ioctl completion patcket */
> +	if (desc->flags & VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED) {
> +		int retry = 5;
> +
> +		while (true) {
> +			int ret;
> +
> +			ret = vmbus_sendpacket(dev->channel, NULL, 0,
> +					       requestid, VM_PKT_COMP, 0);
> +			if (ret == 0) {
> +				break;
> +			} else if (ret == -EAGAIN) {
> +				if (--retry == 0) {
> +					hvnd_error("give up retrying send completion packet\n");
> +					break;
> +				}
> +				hvnd_warn("retrying send completion packet\n");
> +				udelay(100);
> +			} else {
> +				hvnd_error("unable to send completion packet ret=%d\n",
> +					   ret);
> +				break;
> +			}
> +		}
> +	}
> +
> +}
> diff --git a/drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142.0/vmbus_rdma.h b/drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142.0/vmbus_rdma.h
> new file mode 100644
> index 000000000000..78e534fa8748
> --- /dev/null
> +++ b/drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142.0/vmbus_rdma.h
> @@ -0,0 +1,2202 @@
> +/*
> + * Copyright (c) 2014, Microsoft Corporation.
> + *
> + * Author:
> + *   K. Y. Srinivasan <kys@microsoft.com>
> + *
> + * This program is free software; you can redistribute it and/or modify it
> + * under the terms of the GNU General Public License version 2 as published
> + * by the Free Software Foundation.
> + *
> + * This program is distributed in the hope that it will be useful, but
> + * WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
> + * NON INFRINGEMENT.  See the GNU General Public License for more
> + * details.
> + *
> + * Bug fixes/enhancements: Long Li <longli@microsoft.com>
> + */
> +
> +
> +#ifndef _VMBUS_RDMA_H
> +#define _VMBUS_RDMA_H
> +
> +
> +#include <linux/in.h>
> +#include <linux/in6.h>
> +#include <rdma/ib_verbs.h>
> +#include <linux/idr.h>
> +#include <linux/if_ether.h>
> +
> +/* NetworkDirect version Numbers.
> + */
> +#define ND_VERSION_1    0x1
> +#define ND_VERSION_2    0x20000
> +
> +#ifndef NDVER
> +#define NDVER      ND_VERSION_2
> +#endif
> +
> +#define ND_ADAPTER_FLAG_IN_ORDER_DMA_SUPPORTED              0x00000001
> +#define ND_ADAPTER_FLAG_CQ_INTERRUPT_MODERATION_SUPPORTED   0x00000004
> +#define ND_ADAPTER_FLAG_MULTI_ENGINE_SUPPORTED              0x00000008
> +#define ND_ADAPTER_FLAG_CQ_RESIZE_SUPPORTED                 0x00000100
> +#define ND_ADAPTER_FLAG_LOOPBACK_CONNECTIONS_SUPPORTED      0x00010000
> +
> +#define ND_CQ_NOTIFY_ERRORS                                 0
> +#define ND_CQ_NOTIFY_ANY                                    1
> +#define ND_CQ_NOTIFY_SOLICITED                              2
> +
> +#define ND_MR_FLAG_ALLOW_LOCAL_WRITE                        0x00000001
> +#define ND_MR_FLAG_ALLOW_REMOTE_READ                        0x00000002
> +#define ND_MR_FLAG_ALLOW_REMOTE_WRITE                       0x00000005
> +#define ND_MR_FLAG_RDMA_READ_SINK                           0x00000008
> +#define ND_MR_FLAG_DO_NOT_SECURE_VM                         0x80000000
> +
> +#define ND_OP_FLAG_SILENT_SUCCESS                           0x00000001
> +#define ND_OP_FLAG_READ_FENCE                               0x00000002
> +#define ND_OP_FLAG_SEND_AND_SOLICIT_EVENT                   0x00000004
> +#define ND_OP_FLAG_ALLOW_READ                               0x00000008
> +#define ND_OP_FLAG_ALLOW_WRITE                              0x00000010
> +
> +#if NDVER >= ND_VERSION_2
> +#define ND_OP_FLAG_INLINE                                   0x00000020
> +#endif
> +
> +#define ND_AF_INET6	23
> +#define IF_MAX_ADDR_LENGTH 32
> +
> +struct group_affinity {
> +	u64 mask; //KYS: usually 0
> +	u16 group; // KYS usually -1
> +	u16 reserved[3];
> +};
> +
> +struct if_physical_addr {
> +	u16 length;
> +	u8 addr[IF_MAX_ADDR_LENGTH];
> +};
> +
> +struct adapter_info_v2 {
> +	u32 info_version;
> +	u16 vendor_id;
> +	u16 device_id;
> +	u64 adapter_id;
> +	size_t max_registration_size;
> +	size_t max_window_size;
> +	u32 max_initiator_sge;
> +	u32 max_recv_sge;
> +	u32 max_read_sge;
> +	u32 max_transfer_length;
> +	u32 max_inline_data_size;
> +	u32 max_inbound_read_limit;
> +	u32 max_outbound_read_limit;
> +	u32 max_recv_q_depth;
> +	u32 max_initiator_q_depth;
> +	u32 max_shared_recv_q_depth;
> +	u32 max_completion_q_depth;
> +	u32 inline_request_threshold;
> +	u32 large_request_threshold;
> +	u32 max_caller_data;
> +	u32 max_callee_data;
> +	u32 adapter_flags;
> +} __packed;
> +
> +struct nd2_adapter_info_32 { //KYS: Check what this is
> +	u32 info_version;
> +	u16 vendor_id;
> +	u16 devic_id;
> +	u64 adapter_id;
> +	u32 max_registration_size;
> +	u32 max_window_size;
> +	u32 max_initiator_sge;
> +	u32 max_recv_sge;
> +	u32 max_read_sge;
> +	u32 max_transfer_length;
> +	u32 max_inline_data_size;
> +	u32 max_inbound_read_limit;
> +	u32 max_outbound_read_limit;
> +	u32 max_recv_q_depth;
> +	u32 max_initiator_q_depth;
> +	u32 max_shared_recv_q_depth;
> +	u32 max_completion_q_depth;
> +	u32 inline_request_threshold;
> +	u32 large_request_threshold;
> +	u32 max_caller_data;
> +	u32 max_callee_data;
> +	u32 adapter_flags;
> +} __packed;
> +
> +enum nd2_request_type {
> +	ND2_RT_RECEIVE,
> +	ND2_RT_SEND,
> +	ND2_RT_BIND,
> +	ND2_RT_INVALIDATE,
> +	ND2_RT_READ,
> +	ND2_RT_WRITE
> +};
> +
> +struct nd2_result {
> +	u32 status;
> +	u32 bytes_transferred;
> +	void *qp_ctx;
> +	void *request_ctx;
> +	enum nd2_request_type request_type;
> +} __packed;
> +
> +struct nd2_sge {
> +	void *buffer;
> +	u32 buffer_length;
> +	u32 mr_token;
> +} __packed;
> +
> +/*
> + * The communication with the host via ioctls using VMBUS
> + * as the transport.
> + */
> +
> +#define ND_IOCTL_VERSION    1
> +
> +enum nd_mapping_type {
> +	ND_MAP_IOSPACE,
> +	ND_MAP_MEMORY,
> +	ND_MAP_MEMORY_COALLESCE,
> +	ND_MAP_PAGES,
> +	ND_MAP_PAGES_COALLESCE,
> +	ND_UNMAP_IOSPACE,
> +	ND_UNMAP_MEMORY,
> +	ND_MAX_MAP_TYPE
> +};
> +
> +enum nd_caching_type {
> +	ND_NON_CACHED = 0,
> +	ND_CACHED,
> +	ND_WRITE_COMBINED,
> +	ND_MAX_CACHE_TYPE
> +};
> +
> +enum nd_aceess_type {
> +	ND_READ_ACCESS = 0,
> +	ND_WRITE_ACCESS,
> +	ND_MODIFY_ACCESS
> +};
> +
> +struct nd_map_io_space {
> +	enum nd_mapping_type map_type;
> +	enum nd_caching_type cache_type;
> +	u32 cb_length;
> +};
> +
> +struct nd_map_memory {
> +	enum nd_mapping_type map_type;
> +	enum nd_aceess_type access_type;
> +	u64 address;
> +	u32 cb_length;
> +};
> +
> +struct nd_mapping_id {
> +	enum nd_mapping_type map_type;
> +	u64 id;
> +};
> +
> +struct ndk_map_pages {
> +	struct nd_map_memory header;
> +	u32 page_offset;
> +};
> +
> +union nd_mapping {
> +	enum nd_mapping_type map_type;
> +	struct nd_map_io_space map_io_space;
> +	struct nd_map_memory map_memory;
> +	struct nd_mapping_id mapping_id;
> +	struct ndk_map_pages map_pages;
> +};
> +
> +struct nd_mapping_result {
> +	u64 id;
> +	u64 info;
> +};
> +
> +struct nd_resource_descriptor {
> +	u64 handle;
> +	u32 ce_mapping_results;
> +	u32 cb_mapping_results_offset;
> +};
> +
> +struct nd_handle {
> +	u32 version;
> +	u32 reserved;
> +	u64 handle;
> +};
> +
> +union nd_sockaddr_inet {
> +	struct sockaddr_in ipv4;
> +	struct sockaddr_in6 ipv6;
> +	u16 address_family; //KYS how is this supposed to work?
> +};
> +
> +struct nd_address_element {
> +	union nd_sockaddr_inet addr;
> +	char mac_addr[ETH_ALEN];
> +};
> +
> +struct nd_resolve_address {
> +	u32 version;
> +	u32 reserved;
> +	union nd_sockaddr_inet address;
> +};
> +
> +struct nd_open_adapter {
> +	u32 version;
> +	u32 reserved;
> +	u32 ce_mapping_cnt;
> +	u32 cb_mapping_offset;
> +	u64 adapter_id;
> +};
> +
> +struct nd_adapter_query {
> +	u32 version;
> +	u32 info_version;
> +	u64 adapter_handle;
> +};
> +
> +struct nd_create_cq {
> +	u32 version;
> +	u32 queue_depth;
> +	u32 ce_mapping_cnt;
> +	u32 cb_mapping_offset;
> +	u64 adapter_handle;
> +	struct group_affinity affinity;
> +};
> +
> +struct nd_create_srq {
> +	u32 version;
> +	u32 queue_depth;
> +	u32 ce_mapping_cnt;
> +	u32 cb_mapping_offset;
> +	u32 max_request_sge;
> +	u32 notify_threshold;
> +	u64 pd_handle;
> +	struct group_affinity affinity;
> +};
> +
> +struct nd_create_qp_hdr {
> +	u32 version;
> +	u32 cb_max_inline_data;
> +	u32 ce_mapping_cnt;
> +	u32 cb_mapping_offset; //KYS: what is this prefix - ce/cb
> +	u32 initiator_queue_depth;
> +	u32 max_initiator_request_sge;
> +	u64 receive_cq_handle;
> +	u64 initiator_cq_handle;
> +	u64 pd_handle;
> +};
> +
> +struct nd_create_qp {
> +	struct nd_create_qp_hdr hdr;
> +	u32 receive_queue_depth;
> +	u32 max_receive_request_sge;
> +};
> +
> +struct nd_create_qp_with_srq {
> +	struct nd_create_qp_hdr header;
> +	u64 srq_handle;
> +};
> +
> +struct nd_srq_modify {
> +	u32 version;
> +	u32 queue_depth;
> +	u32 ce_mapping_cnt;
> +	u32 cb_mapping_offset;
> +	u32 notify_threshold;
> +	u32 reserved;
> +	u64 srq_handle;
> +};
> +
> +struct nd_cq_modify {
> +	u32 version;
> +	u32 queue_depth;
> +	u32 ce_mapping_count;
> +	u32 cb_mappings_offset;
> +	u64 cq_handle;
> +};
> +
> +struct nd_cq_notify {
> +	u32 version;
> +	u32 type;
> +	u64 cq_handle;
> +};
> +
> +struct nd_mr_register_hdr {
> +	u32 version;
> +	u32 flags;
> +	u64 cb_length;
> +	u64 target_addr;
> +	u64 mr_handle;
> +};
> +
> +struct nd_mr_register {
> +	struct nd_mr_register_hdr header;
> +	u64 address;
> +};
> +
> +struct nd_bind {
> +	u32 version;
> +	u32 reserved;
> +	u64 handle;
> +	union nd_sockaddr_inet address;
> +};
> +
> +struct nd_read_limits {
> +	u32 inbound;
> +	u32 outbound;
> +};
> +
> +struct nd_connect {
> +	u32 version;
> +	u32 reserved;
> +	struct nd_read_limits read_limits;
> +	u32 cb_private_data_length;
> +	u32 cb_private_data_offset;
> +	u64 connector_handle;
> +	u64 qp_handle;
> +	union nd_sockaddr_inet destination_address;
> +	struct if_physical_addr phys_addr;
> +};
> +
> +struct nd_accept {
> +	u32 version;
> +	u32 reserved;
> +	struct nd_read_limits read_limits;
> +	u32 cb_private_data_length;
> +	u32 cb_private_data_offset;
> +	u64 connector_handle;
> +	u64 qp_handle;
> +};
> +
> +struct nd_reject {
> +	u32 version;
> +	u32 reserved;
> +	u32 cb_private_data_length;
> +	u32 cb_private_data_offset;
> +	u64 connector_handle;
> +};
> +
> +struct nd_listen {
> +	u32 version;
> +	u32 back_log;
> +	u64 listener_handle;
> +};
> +
> +struct nd_get_connection_request {
> +	u32 version;
> +	u32 reserved;
> +	u64 listener_handle;
> +	u64 connector_handle;
> +};
> +
> +enum ndv_mmio_type {
> +	ND_PARTITION_KERNEL_VIRTUAL,
> +	ND_PARTITION_SYSTEM_PHYSICAL,
> +	ND_PARTITION_GUEST_PHYSICAL,
> +	ND_MAXIMUM_MMIO_TYPE
> +};
> +
> +struct ndv_resolve_adapter_id {
> +	u32 version;
> +	struct if_physical_addr phys_addr;
> +};
> +
> +struct ndv_partition_create {
> +	u32 version;
> +	enum ndv_mmio_type mmio_type;
> +	u64 adapter_id;
> +	u64 xmit_cap;
> +};
> +
> +struct ndv_partition_bind_luid {
> +	u32 version;
> +	u32 reserved;
> +	u64 partition_handle;
> +	struct if_physical_addr phys_addr;
> +	//IF_LUID luid; //KYS?
> +};
> +
> +struct ndv_partition_bind_address {
> +	u32 version;
> +	u32 reserved;
> +	u64 partition_handle;
> +	union nd_sockaddr_inet address;
> +	struct if_physical_addr guest_phys_addr;
> +	struct if_physical_addr phys_addr;
> +};
> +
> +struct ndk_mr_register {
> +	struct nd_mr_register_hdr hdr;
> +	u32 cb_logical_page_addresses_offset;
> +};
> +
> +struct ndk_bind {
> +	struct nd_bind hdr;
> +	u64 authentication_id;
> +	bool is_admin;
> +};
> +
> +#define FDN 0x12
> +#define METHOD_BUFFERED 0x0
> +#define FAA 0x0
> +
> +#define CTL_CODE( DeviceType, Function, Method, Access ) ( \
> +	((DeviceType) << 16) | ((Access) << 14) | ((Function) << 2) | (Method) \
> +)
> +
> +#define ND_FUNCTION(r_, i_)    ((r_) << 6 | (i_))
> +#define IOCTL_ND(r_, i_) \
> +		 CTL_CODE( FDN, ND_FUNCTION((r_), (i_)), METHOD_BUFFERED, FAA )
> +
> +#define ND_FUNCTION_FROM_CTL_CODE(ctrlCode_)     ((ctrlCode_ >> 2) & 0xFFF)
> +#define ND_RESOURCE_FROM_CTL_CODE(ctrlCode_)     (ND_FUNCTION_FROM_CTL_CODE(ctrlCode_) >> 6)
> +#define ND_OPERATION_FROM_CTRL_CODE(ctrlCode_)   (ND_FUNCTION_FROM_CTL_CODE(ctrlCode_) & 0x3F)
> +
> +#define ND_DOS_DEVICE_NAME L"\\DosDevices\\Global\\NetworkDirect"
> +#define ND_WIN32_DEVICE_NAME L"\\\\.\\NetworkDirect"
> +
> +enum nd_resource_type {
> +	ND_PROVIDER = 0,
> +	ND_ADAPTER,
> +	ND_PD,
> +	ND_CQ,
> +	ND_MR,
> +	ND_MW,
> +	ND_SRQ,
> +	ND_CONNECTOR,
> +	ND_LISTENER,
> +	ND_QP,
> +	ND_VIRTUAL_PARTITION,
> +	ND_RESOURCE_TYPE_COUNT
> +};
> +
> +#define ND_OPERATION_COUNT 14
> +
> +#define IOCTL_ND_PROVIDER(i_)		IOCTL_ND(ND_PROVIDER, i_)
> +#define IOCTL_ND_ADAPTER(i_)		IOCTL_ND(ND_ADAPTER, i_)
> +#define IOCTL_ND_PD(i_)			IOCTL_ND(ND_PD, i_)
> +#define IOCTL_ND_CQ(i_)			IOCTL_ND(ND_CQ, i_)
> +#define IOCTL_ND_MR(i_)			IOCTL_ND(ND_MR, i_)
> +#define IOCTL_ND_MW(i_)			IOCTL_ND(ND_MW, i_)
> +#define IOCTL_ND_SRQ(i_)		IOCTL_ND(ND_SRQ, i_)
> +#define IOCTL_ND_CONNECTOR(i_)		IOCTL_ND(ND_CONNECTOR, i_)
> +#define IOCTL_ND_LISTENER(i_)		IOCTL_ND(ND_LISTENER, i_)
> +#define IOCTL_ND_QP(i_)			IOCTL_ND(ND_QP, i_)
> +#define IOCTL_ND_VIRTUAL_PARTITION(i_)	IOCTL_ND(ND_VIRTUAL_PARTITION, i_)
> +
> +/* Provider IOCTLs */
> +#define IOCTL_ND_PROVIDER_INIT				IOCTL_ND_PROVIDER( 0 )
> +#define IOCTL_ND_PROVIDER_BIND_FILE			IOCTL_ND_PROVIDER( 1 )
> +#define IOCTL_ND_PROVIDER_QUERY_ADDRESS_LIST		IOCTL_ND_PROVIDER( 2 )
> +#define IOCTL_ND_PROVIDER_RESOLVE_ADDRESS		IOCTL_ND_PROVIDER( 3 )
> +#define IOCTL_ND_PROVIDER_MAX_OPERATION			4
> +
> +/* Adapter IOCTLs */
> +#define IOCTL_ND_ADAPTER_OPEN				IOCTL_ND_ADAPTER( 0 )
> +#define IOCTL_ND_ADAPTER_CLOSE				IOCTL_ND_ADAPTER( 1 )
> +#define IOCTL_ND_ADAPTER_QUERY				IOCTL_ND_ADAPTER( 2 )
> +#define IOCTL_ND_ADAPTER_QUERY_ADDRESS_LIST		IOCTL_ND_ADAPTER( 3 )
> +#define IOCTL_ND_ADAPTER_MAX_OPERATION			4
> +
> +/* Protection Domain IOCTLs */
> +#define IOCTL_ND_PD_CREATE				IOCTL_ND_PD( 0 )
> +#define IOCTL_ND_PD_FREE				IOCTL_ND_PD( 1 )
> +#define IOCTL_ND_PD_MAX_OPERATION			2
> +
> +/* Completion Queue IOCTLs */
> +#define IOCTL_ND_CQ_CREATE				IOCTL_ND_CQ( 0 )
> +#define IOCTL_ND_CQ_FREE				IOCTL_ND_CQ( 1 )
> +#define IOCTL_ND_CQ_CANCEL_IO				IOCTL_ND_CQ( 2 )
> +#define IOCTL_ND_CQ_GET_AFFINITY			IOCTL_ND_CQ( 3 )
> +#define IOCTL_ND_CQ_MODIFY				IOCTL_ND_CQ( 4 )
> +#define IOCTL_ND_CQ_NOTIFY				IOCTL_ND_CQ( 5 )
> +#define IOCTL_ND_CQ_MAX_OPERATION			6
> +
> +/* Memory Region IOCTLs */
> +#define IOCTL_ND_MR_CREATE				IOCTL_ND_MR( 0 )
> +#define IOCTL_ND_MR_FREE				IOCTL_ND_MR( 1 )
> +#define IOCTL_ND_MR_CANCEL_IO				IOCTL_ND_MR( 2 )
> +#define IOCTL_ND_MR_REGISTER				IOCTL_ND_MR( 3 )
> +#define IOCTL_ND_MR_DEREGISTER				IOCTL_ND_MR( 4 )
> +#define IOCTL_NDK_MR_REGISTER				IOCTL_ND_MR( 5 )
> +#define IOCTL_ND_MR_MAX_OPERATION			6
> +
> +/* Memory Window IOCTLs */
> +#define IOCTL_ND_MW_CREATE				IOCTL_ND_MW( 0 )
> +#define IOCTL_ND_MW_FREE				IOCTL_ND_MW( 1 )
> +#define IOCTL_ND_MW_MAX_OPERATION			2
> +
> +/* Shared Receive Queue IOCTLs */
> +#define IOCTL_ND_SRQ_CREATE				IOCTL_ND_SRQ( 0 )
> +#define IOCTL_ND_SRQ_FREE				IOCTL_ND_SRQ( 1 )
> +#define IOCTL_ND_SRQ_CANCEL_IO				IOCTL_ND_SRQ( 2 )
> +#define IOCTL_ND_SRQ_GET_AFFINITY			IOCTL_ND_SRQ( 3 )
> +#define IOCTL_ND_SRQ_MODIFY				IOCTL_ND_SRQ( 4 )
> +#define IOCTL_ND_SRQ_NOTIFY				IOCTL_ND_SRQ( 5 )
> +#define IOCTL_ND_SRQ_MAX_OPERATION			6
> +
> +/* Connector IOCTLs */
> +#define IOCTL_ND_CONNECTOR_CREATE			IOCTL_ND_CONNECTOR( 0 )
> +#define IOCTL_ND_CONNECTOR_FREE				IOCTL_ND_CONNECTOR( 1 )
> +#define IOCTL_ND_CONNECTOR_CANCEL_IO			IOCTL_ND_CONNECTOR( 2 )
> +#define IOCTL_ND_CONNECTOR_BIND				IOCTL_ND_CONNECTOR( 3 )
> +#define IOCTL_ND_CONNECTOR_CONNECT			IOCTL_ND_CONNECTOR( 4 )
> +#define IOCTL_ND_CONNECTOR_COMPLETE_CONNECT		IOCTL_ND_CONNECTOR( 5 )
> +#define IOCTL_ND_CONNECTOR_ACCEPT			IOCTL_ND_CONNECTOR( 6 )
> +#define IOCTL_ND_CONNECTOR_REJECT			IOCTL_ND_CONNECTOR( 7 )
> +#define IOCTL_ND_CONNECTOR_GET_READ_LIMITS		IOCTL_ND_CONNECTOR( 8 )
> +#define IOCTL_ND_CONNECTOR_GET_PRIVATE_DATA		IOCTL_ND_CONNECTOR( 9 )
> +#define IOCTL_ND_CONNECTOR_GET_PEER_ADDRESS		IOCTL_ND_CONNECTOR( 10 )
> +#define IOCTL_ND_CONNECTOR_GET_ADDRESS			IOCTL_ND_CONNECTOR( 11 )
> +#define IOCTL_ND_CONNECTOR_NOTIFY_DISCONNECT		IOCTL_ND_CONNECTOR( 12 )
> +#define IOCTL_ND_CONNECTOR_DISCONNECT			IOCTL_ND_CONNECTOR( 13 )
> +#define IOCTL_ND_CONNECTOR_MAX_OPERATION		14
> +
> +/* Listener IOCTLs */
> +#define IOCTL_ND_LISTENER_CREATE			IOCTL_ND_LISTENER( 0 )
> +#define IOCTL_ND_LISTENER_FREE				IOCTL_ND_LISTENER( 1 )
> +#define IOCTL_ND_LISTENER_CANCEL_IO			IOCTL_ND_LISTENER( 2 )
> +#define IOCTL_ND_LISTENER_BIND				IOCTL_ND_LISTENER( 3 )
> +#define IOCTL_ND_LISTENER_LISTEN			IOCTL_ND_LISTENER( 4 )
> +#define IOCTL_ND_LISTENER_GET_ADDRESS			IOCTL_ND_LISTENER( 5 )
> +#define IOCTL_ND_LISTENER_GET_CONNECTION_REQUEST	IOCTL_ND_LISTENER( 6 )
> +#define IOCTL_ND_LISTENER_MAX_OPERATION			7
> +
> +/* Queue Pair IOCTLs */
> +#define IOCTL_ND_QP_CREATE				IOCTL_ND_QP( 0 )
> +#define IOCTL_ND_QP_CREATE_WITH_SRQ			IOCTL_ND_QP( 1 )
> +#define IOCTL_ND_QP_FREE				IOCTL_ND_QP( 2 )
> +#define IOCTL_ND_QP_FLUSH				IOCTL_ND_QP( 3 )
> +#define IOCTL_ND_QP_MAX_OPERATION			4
> +
> +/* Kernel-mode only IOCTLs (IRP_MJ_INTERNAL_DEVICE_CONTROL) */
> +#define IOCTL_NDV_PARTITION_RESOLVE_ADAPTER_ID	IOCTL_ND_VIRTUAL_PARTITION( 0 )
> +#define IOCTL_NDV_PARTITION_CREATE		IOCTL_ND_VIRTUAL_PARTITION( 1 )
> +#define IOCTL_NDV_PARTITION_FREE		IOCTL_ND_VIRTUAL_PARTITION( 2 )
> +#define IOCTL_NDV_PARTITION_BIND		IOCTL_ND_VIRTUAL_PARTITION( 3 )
> +#define IOCTL_NDV_PARTITION_UNBIND		IOCTL_ND_VIRTUAL_PARTITION( 4 )
> +#define IOCTL_NDV_PARTITION_BIND_LUID		IOCTL_ND_VIRTUAL_PARTITION( 5 )
> +#define IOCTL_NDV_PARTITION_MAX_OPERATION	6
> +
> +
> +#define MB_SHIFT 20
> +
> +
> +/* Ringbuffer size for the channel */
> +#define NDV_NUM_PAGES_IN_RING_BUFFER 64
> +
> +#define NDV_MAX_PACKETS_PER_RECEIVE 8
> +
> +#define NDV_MAX_PACKET_COUNT    16304
> +
> +#define NDV_MAX_NUM_OUTSTANDING_RECEIVED_PACKETS (16304)
> +#define NDV_MAX_HANDLE_TABLE_SIZE (16304)
> +#define NDV_HOST_MAX_HANDLE_TABLE_SIZE (NDV_MAX_HANDLE_TABLE_SIZE * 16)
> +
> +
> +#define NDV_MAX_MAPPINGS 4
> +
> +#define NDV_STATE_NONE			0x00000000
> +#define NDV_STATE_CREATED		0x00000001
> +#define NDV_STATE_CONNECTING		0x00000002
> +#define NDV_STATE_INITIALIZING		0x00000003
> +#define NDV_STATE_OPERATIONAL		0xEFFFFFFF
> +#define NDV_STATE_FAILED		0xFFFFFFFF
> +
> +
> +#define NDV_MAX_PRIVATE_DATA_SIZE 64
> +#define NDV_MAX_IOCTL_SIZE        256
> +
> +/* max size of buffer for vector of ND_MAPPING */
> +#define NDV_MAX_MAPPING_BUFFER_SIZE \
> +	(NDV_MAX_MAPPINGS * sizeof(union nd_mapping))
> +
> +/* max expected ioctl buffer size from users */
> +#define NDV_MAX_IOCTL_BUFFER_SIZE \
> +	(NDV_MAX_IOCTL_SIZE + \
> +	NDV_MAX_MAPPING_BUFFER_SIZE + \
> +	NDV_MAX_PRIVATE_DATA_SIZE)
> +
> +/*  max PFN array for inline buffers */
> +#define NDV_MAX_INLINE_PFN_ARRAY_LENGTH 32
> +
> +/* Field header size for inline buffer */
> +#define NDV_MAX_MAPPING_PACKET_FILED_BUFFER_SIZE \
> +	(NDV_MAX_MAPPINGS * sizeof(NDV_PACKET_FIELD))
> +
> +/* Max for a single field */
> +
> +#define NDV_MAX_SINGLE_MAPPING_FIELD  ( sizeof(GPA_RANGE) + \
> +	(sizeof(PFN_NUMBER) * NDV_MAX_INLINE_PFN_ARRAY_LENGTH))
> +
> +/* Max for all inine data */
> +
> +#define NDV_MAX_MAPPING_DATA_SIZE (NDV_MAX_MAPPING_PACKET_FILED_BUFFER_SIZE + \
> +	(NDV_MAX_MAPPINGS * NDV_MAX_SINGLE_MAPPING_FIELD))
> +
> +
> +#define NDV_MAX_PACKET_HEADER_SIZE 256
> +
> +#define NDV_MAX_PACKET_SIZE    (NDV_MAX_PACKET_HEADER_SIZE + \
> +				NDV_MAX_IOCTL_BUFFER_SIZE + \
> +				NDV_MAX_MAPPING_DATA_SIZE)
> +
> +/* Well known message type INIT is defined for the channel
> + * not for the protocol.
> + */
> +
> +#define NDV_PACKET_TYPE_INIT  0xFFFFFFFF
> +
> +/* Invalid protocol version to to identify uninitialized channels */
> +
> +#define NDV_PROTOCOL_VERSION_INVALID  0xFFFFFFFF
> +
> +/* Flags that control the bahavior of packet handling */
> +
> +enum ndv_packet_options {
> +	NDV_PACKET_OPTION_NONE = 0x00,
> +
> +	/* Indicates that the ExternalDataMdl parameter is expectected to be
> +	 * passed and must be handled in the reciever.  This call must be
> +	 * handled specially to ensure that the MDL can be created correctly.
> +	 */
> +	NDV_PACKET_OPTION_EXTERNAL_DATA = 0x01,
> +
> +	/* Inicates that the reciever must execution the handler at passive. */
> +	NDV_PACKET_OPTIONS_REQUIRES_PASSIVE = 0x02,
> +
> +	/* Indicates that the sender does not expect and is not waiting for a
> +	 * response packet.
> +	 */
> +	NDV_PACKET_OPTIONS_POST = 0x04,
> +};
> +
> +#define NDV_PACKET_TYPE(id_, opt_) \
> +	(((opt_)<<24) | (id_))
> +
> +#define NDV_PACKET_TYPE_OPTIONS(type_) \
> +	(((type_) >> 24) & 0xFF)
> +
> +#define NDV_PACKET_TYPE_ID(type_) \
> +	((type_) & 0xFFFFFF) \
> +
> +#define NDV_ADD_PACKET_OPTION(type_, opt_) \
> +	(type_) |= (opt_<<24)
> +
> +/* The header value sent on all packets */
> +union ndv_packet_hdr {
> +
> +	struct {
> +		/* The type of packet.
> +		 * This value should be created with the NDV_PACKET_TYPE macro
> +		 * to include all packet options within the packet type.
> +		 */
> +		u32 packet_type;
> +		/* The size of the entire fixed message structure that exists
> +		 * before the data. This must be >= sizeof(NDV_PACKET_HEADER)
> +		 */
> +		u32 hdr_sz;
> +		/* This size of the data that follows the message
> +		 * data_sz + hdr_sz size gives the total size of
> +		 * the buffer that is used.
> +		 */
> +		u32 data_sz;
> +		/* The status code used to indicate success or failure.
> +		 * It is only used in completions and during responses.
> +		 */
> +		u32 status; //KYS: NTSTATUS?
> +	};
> +
> +	u64 padding[2]; //KYS: why?
> +};
> +
> +
> +/* The core INIT packet.  This message is defined in the channel
> + * not in the protocol.  This message should never change size
> + * or behavior, as it could impact compatibility in the future.
> + * This packet is used to negotiate the protocol version, so chaning
> + * this size could break backward compat.
> + */
> +
> +union ndv_packet_init {
> +	struct {
> +		u32 packet_type;
> +		u32 protocol_version;
> +		u32 flags;
> +	};
> +	u64 padding[2];
> +}  __packed;
> +
> +#define NDV_PACKET_INIT_SIZE 16
> +
> +/* Data packing flags used for accessing the dynamic fields inside a packet */
> +#define NDV_DATA_PACKING_2 0x1
> +#define NDV_DATA_PACKING_4 0x3
> +#define NDV_DATA_PACKING_8 0x7
> +
> +
> +#define NDV_PROTOCOL_VERSION_1        0x0100
> +#define NDV_PROTOCOL_VERSION_CURRENT  NDV_PROTOCOL_VERSION_1
> +#define NDV_PROTOCOL_VERSION_COUNT    1
> +
> +struct ndv_pkt_field {
> +	u32 size;
> +	u32 offset;
> +};
> +
> +enum ndv_pkt_id {
> +	NDV_PKT_UNKNOWN = 0,
> +	/* Version 1 Message ID's */
> +	NDV_PKT_ID1_BIND,
> +	NDV_PKT_ID1_CREATE,
> +	NDV_PKT_ID1_CLEANUP,
> +	NDV_PKT_ID1_CANCEL,
> +	NDV_PKT_ID1_CONTROL,
> +	NDV_PKT_ID1_COMPLETE,
> +	NDV_PKT_ID1_INIT_RESOURCES,
> +};
> +
> +/* The guest will send this as the first messages just after init
> + * The resources are reserved per channel.
> + */
> +
> +struct ndv_pkt_hdr_init_resources_1 {
> +
> +	union ndv_packet_hdr    pkt_hdr;
> +	u16 io_space_sz_mb;
> +	u64 io_space_start;
> +
> +};
> +
> +
> +
> +/* The guest will send this packet to the host after channel init
> + * to query support for the adapters that are registered.
> + */
> +
> +struct ndv_pkt_hdr_bind_1 {
> +	union ndv_packet_hdr    pkt_hdr;
> +	bool unbind;
> +	union nd_sockaddr_inet ip_address;
> +	struct if_physical_addr phys_addr;
> +	u64 guest_id;
> +};
> +
> +union ndv_context_handle {
> +	u64 val64;
> +	struct {
> +		u32 local;
> +		u32 remote;
> +	};
> +};
> +
> +struct ndv_pkt_hdr_create_1 {
> +	union ndv_packet_hdr    pkt_hdr;
> +
> +	/* Identifies the object used to track this file handle on both
> +	 * the guest and the host.  When sent from the guest, it will contain
> +	 * the guest handle.  On success, the host will populate and return
> +	 * it's handle value as well.
> +	 */
> +
> +	union ndv_context_handle handle;
> +
> +	/* The parameters sent to the CreateFile call */
> +	u32  access_mask;
> +	u32 open_options;
> +
> +	u16 file_attributes; //KYS: This field must be 64 bit aligned
> +
> +	u16 share_access; //KYS
> +
> +	u32 kys_padding; //KYS
> +
> +	u16  ea_length; //KYS; needs to be 64 bit aligned; what is ea length - unused
> +};
> +
> +
> +struct ndv_pkt_hdr_cleanup_1 {
> +	union ndv_packet_hdr    pkt_hdr;
> +
> +	/* Identifies the object used to track this file handle on both
> +	 * the guest and the host.  When sent from the guest, it will contain
> +	 * the both the guest and host handle values.  The host will use this
> +	 * value to cleanup its resource, then update its portion of the handle
> +	 * to NDV_HANDLE_NULL before returning the data back to the guest.
> +	 */
> +	union ndv_context_handle handle;
> +};
> +
> +struct ndv_pkt_hdr_cancel_1 {
> +	union ndv_packet_hdr    pkt_hdr;
> +	union ndv_context_handle file_handle;
> +	union ndv_context_handle irp_handle;
> +};
> +
> +struct ndv_bind_port_info {
> +	//LUID authentication_id; //KYS: LUID?
> +	bool is_admin;
> +};
> +
> +struct ndv_extended_data_flds {
> +	union {
> +		u32 field_count;
> +		u64 padding;
> +	};
> +
> +	//struct ndv_pkt_field fields[ANYSIZE_ARRAY]; //KYS?
> +};
> +
> +
> +struct ndv_packet_hdr_control_1 {
> +	union ndv_packet_hdr    pkt_hdr;
> +	/* Identifies the object used to track this file handle on both
> +	 * the guest and the host.  This should always have both guest
> +	 * and host handle values inside it.
> +	 */
> +
> +	union ndv_context_handle file_handle;
> +
> +	/* The handle information for the allocated irp context object.
> +	 * This information is used when the host/guest starts the cancelation
> +	 */
> +	union ndv_context_handle irp_handle;
> +
> +	/* The input data describing in the IO control parameters */
> +
> +	u32 io_cntrl_code;
> +	u32 output_buf_sz;
> +	u32 input_buf_sz;
> +	u32 input_output_buf_offset;
> +
> +	/* These are used in the return message to indicate the status of the IO
> +	 * operation and the amount of data written to the output buffer.
> +	 */
> +	u32 io_status; //KYS: NTSTATUS?
> +	u32 bytes_returned;
> +
> +	/* This contains the field information for additional data that is sent
> +	 * with the packet that is IOCTL specific.
> +	 */
> +
> +	struct ndv_pkt_field extended_data;
> +};
> +
> +/*
> + * Include MLX specific defines.
> + */
> +
> +#include "mx_abi.h"
> +
> +/* Driver specific state.
> + */
> +
> +/*
> + * We need to have host open a file; some
> + * Windows constants for open.
> + */
> +#define STANDARD_RIGHTS_ALL   (0x001F0000L)
> +#define FILE_ATTRIBUTE_NORMAL (0x80)
> +#define FILE_SHARE_READ	 (0x00000001)
> +#define FILE_SHARE_WRITE (0x00000002)
> +#define FILE_SHARE_DELETE (0x00000004)
> +#define FILE_FLAG_OVERLAPPED (0x40000000)
> +#define FILE_SHARE_ALL (FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE)
> +#define CREATE_ALWAYS (2)
> +#define OPEN_EXISTING (3)
> +
> +#define RTL_NUMBER_OF(_x) \
> +		sizeof(_x)/sizeof(_x[0])
> +/*
> + * The context structure tracks the open state.
> + */
> +
> +/*
> + * Packet layout for open adaptor.
> + */
> +
> +/*
> + * Packet for querying the address list.
> + */
> +
> +union query_addr_list_ioctl {
> +	struct nd_handle in;
> +	union nd_sockaddr_inet out[16]; //KYS a max of 16 addresses
> +};
> +
> +struct pkt_query_addr_list {
> +	struct ndv_packet_hdr_control_1 hdr;
> +	union query_addr_list_ioctl ioctl;
> +	unsigned long activity_id;
> +};
> +
> +
> +struct pkt_fld {
> +	u32 size;
> +	u32 offset;
> +};
> +
> +struct fld_data {
> +	union {
> +		u64 padding;
> +	};
> +};
> +
> +struct extended_data_oad {
> +	union {
> +		u32 cnt;
> +		u64 padding;
> +	};
> +	/* offsets are from start of extended data struct
> +	 * and should start on 8 byte boundary
> +	 */
> +	struct pkt_fld fields[IBV_GET_CONTEXT_MAPPING_MAX];
> +};
> +
> +union oad_ioctl {
> +	struct nd_open_adapter input;
> +	struct nd_resource_descriptor resrc_desc;
> +};
> +
> +union oad_mappings {
> +	struct ibv_get_context_req ctx_input;
> +	struct ibv_get_context_resp ctx_output;
> +};
> +
> +struct pkt_nd_open_adapter {
> +	struct ndv_packet_hdr_control_1 hdr;
> +
> +	union oad_ioctl ioctl;
> +	union oad_mappings mappings;
> +
> +	/*
> +	 * Extended data.
> +	 */
> +	struct extended_data_oad ext_data;
> +};
> +
> +/*
> + * Create CQ IOCTL.
> + */
> +
> +struct cq_db_gpa {
> +	u32 byte_count;
> +	u32 byte_offset;
> +	u64 pfn_array[2];
> +};
> +
> +struct cq_sn_gpa {
> +	u32 byte_count;
> +	u32 byte_offset;
> +	u64 pfn_array[2];
> +};
> +
> +struct create_cq_ext_data {
> +	union {
> +		u32 cnt;
> +		u64 padding;
> +	};
> +	/* offsets are from start of extended data struct
> +	 * and should start on 8 byte boundary
> +	 */
> +	struct pkt_fld fields[MLX4_IB_CREATE_CQ_MAPPING_MAX];
> +	struct cq_db_gpa db_gpa;
> +	struct cq_sn_gpa sn_gpa;
> +	struct gpa_range cqbuf_gpa;
> +};
> +
> +union create_cq_ioctl {
> +	struct nd_create_cq input;
> +	struct nd_resource_descriptor resrc_desc;
> +};
> +
> +union create_cq_mappings {
> +	struct ibv_create_cq cq_in;
> +	struct ibv_create_cq_resp cq_resp;
> +};
> +
> +struct pkt_nd_create_cq {
> +	struct ndv_packet_hdr_control_1 hdr;
> +
> +	union create_cq_ioctl ioctl;
> +	union create_cq_mappings mappings;
> +
> +	/*
> +	 * Extended data.
> +	 */
> +	struct create_cq_ext_data ext_data;
> +};
> +
> +/*
> + * IOCTL to free CQ.
> + */
> +struct free_cq_ioctl {
> +	struct nd_handle in;
> +};
> +
> +struct pkt_nd_free_cq {
> +	struct ndv_packet_hdr_control_1 hdr;
> +
> +	struct  free_cq_ioctl ioctl;
> +};
> +
> +
> +/*
> + * IOCTL to QUERY CQ - CQ NOTIFY
> + */
> +
> +struct notify_cq_ioctl {
> +	struct nd_cq_notify in;
> +};
> +
> +struct pkt_nd_notify_cq {
> +	struct ndv_packet_hdr_control_1 hdr;
> +	struct notify_cq_ioctl ioctl;
> +};
> +
> +/*
> + * IOCTL to Create a listner
> + */
> +
> +struct nd_ep_create {
> +	struct nd_handle hdr;
> +	bool to_semantics;
> +	unsigned long activity_id;
> +};
> +
> +union listener_cr_ioctl {
> +	struct nd_ep_create in;
> +	u64  out;
> +};
> +
> +struct pkt_nd_cr_listener {
> +	struct ndv_packet_hdr_control_1 hdr;
> +	union listener_cr_ioctl ioctl;
> +};
> +
> +/*
> + * IOCTL to free listener.
> + */
> +
> +struct listener_free_ioctl {
> +	struct nd_handle in;
> +};
> +
> +struct pkt_nd_free_listener {
> +	struct ndv_packet_hdr_control_1 hdr;
> +	struct listener_free_ioctl ioctl;
> +};
> +
> +/*
> + * IOCTL for listener cancel IO.
> + */
> +struct listener_cancelio_ioctl {
> +	struct nd_handle in;
> +};
> +
> +struct pkt_nd_cancelio_listener {
> +	struct ndv_packet_hdr_control_1 hdr;
> +	struct listener_cancelio_ioctl ioctl;
> +};
> +
> +/*
> + * IOCTL for LISTENER BIND
> + */
> +
> +union listener_bind_ioctl {
> +	struct ndk_bind  in;
> +};
> +
> +struct pkt_nd_bind_listener {
> +	struct ndv_packet_hdr_control_1 hdr;
> +	union listener_bind_ioctl ioctl;
> +};
> +
> +/*
> + * After the listener is bound, enable
> + * listening.
> + */
> +
> +union listener_listen_ioctl {
> +	struct nd_listen  in;
> +};
> +
> +struct pkt_nd_listen_listener {
> +	struct ndv_packet_hdr_control_1 hdr;
> +	union listener_listen_ioctl ioctl;
> +};
> +
> +/*
> + * IOCTL for getting the adddress from listener.
> + *
> + */
> +
> +union listener_get_addr_ioctl {
> +	struct nd_handle  in;
> +	union nd_sockaddr_inet out;
> +};
> +
> +struct pkt_nd_get_addr_listener {
> +	struct ndv_packet_hdr_control_1 hdr;
> +	union listener_get_addr_ioctl ioctl;
> +};
> +
> +/*
> + * IOCTL to get a connection from a listener.
> + */
> +
> +union listener_get_connection_ioctl {
> +	struct nd_get_connection_request  in;
> +	union nd_sockaddr_inet out;
> +};
> +
> +struct pkt_nd_get_connection_listener {
> +	struct ndv_packet_hdr_control_1 hdr;
> +	union listener_get_connection_ioctl ioctl;
> +};
> +
> +
> +/*
> + * Connector IOCTLs
> + */
> +
> +/*
> + * IOCTL to create connector.
> + */
> +
> +union connector_cr_ioctl { //KYS should this be a union or struct?
> +	struct nd_ep_create in;
> +	u64  out;
> +};
> +
> +struct pkt_nd_cr_connector {
> +	struct ndv_packet_hdr_control_1 hdr;
> +	union connector_cr_ioctl ioctl; //KYS: union or struct
> +};
> +
> +/*
> + * IOCTL to free connector.
> + */
> +
> +struct connector_free_ioctl {
> +	struct nd_handle in;
> +};
> +
> +struct pkt_nd_free_connector {
> +	struct ndv_packet_hdr_control_1 hdr;
> +	struct connector_free_ioctl ioctl;
> +};
> +
> +/*
> + * IOCTL to cancel I/O on a connector.
> + */
> +
> +struct connector_cancelio_ioctl {
> +	struct nd_handle in;
> +};
> +
> +struct pkt_nd_cancelio_connector {
> +	struct ndv_packet_hdr_control_1 hdr;
> +	struct connector_cancelio_ioctl ioctl;
> +};
> +
> +/*
> + * IOCTL to Bind an address to the connector.
> + */
> +
> +union connector_bind_ioctl {
> +	struct ndk_bind  in;
> +};
> +
> +struct pkt_nd_bind_connector {
> +	struct ndv_packet_hdr_control_1 hdr;
> +	union connector_bind_ioctl ioctl;
> +};
> +
> +/*
> + * IOCTL to connect a connector.
> + */
> +
> +struct connector_connect_in {
> +	struct nd_connect hdr;
> +	u8 retry_cnt;
> +	u8 rnr_retry_cnt;
> +	u8 priv_data[56];
> +	unsigned long activity_id;
> +};
> +
> +union connector_connect_ioctl {
> +	struct connector_connect_in in;
> +};
> +
> +struct pkt_nd_connector_connect {
> +	struct ndv_packet_hdr_control_1 hdr;
> +	union connector_connect_ioctl ioctl;
> +};
> +
> +/*
> + * IOCTL for connector complete connect
> + */
> +
> +struct complete_connect_in {
> +	struct nd_handle hdr;
> +	u8 rnr_nak_to;
> +	unsigned long activity_id;
> +};
> +
> +struct complete_connect_out {
> +	enum ibv_qp_state state;
> +};
> +
> +union connector_complete_connect_ioctl {
> +	struct complete_connect_in in;
> +	struct complete_connect_out out;
> +};
> +
> +struct pkt_nd_connector_connect_complete {
> +	struct ndv_packet_hdr_control_1 hdr;
> +	union connector_complete_connect_ioctl ioctl;
> +};
> +
> +
> +#define MAX_PRIVATE_DATA_LEN	148
> +
> +/*
> + * IOCTL for connector accept.
> + */
> +
> +struct connector_accept_in {
> +	struct nd_accept hdr;
> +	u8 rnr_retry_cnt;
> +	u8 rnr_nak_to;
> +	u8 private_data[MAX_PRIVATE_DATA_LEN];
> +	unsigned long activity_id;
> +};
> +
> +struct connector_accept_out {
> +	enum ibv_qp_state state;
> +};
> +
> +union connector_accept_ioctl {
> +	struct connector_accept_in in;
> +	struct connector_accept_out out;
> +};
> +
> +struct pkt_nd_connector_accept {
> +	struct ndv_packet_hdr_control_1 hdr;
> +	union connector_accept_ioctl ioctl;
> +};
> +
> +/*
> + * IOCTL for connector to reject a connection.
> + */
> +
> +struct connector_reject_in {
> +	struct nd_reject hdr;
> +	u8 private_data[MAX_PRIVATE_DATA_LEN];
> +};
> +
> +struct connector_reject_out {
> +	enum ibv_qp_state state;
> +};
> +
> +union connector_reject_ioctl {
> +	struct connector_reject_in in;
> +	struct connector_reject_out out;
> +};
> +
> +struct pkt_nd_connector_reject {
> +	struct ndv_packet_hdr_control_1 hdr;
> +	union connector_reject_ioctl ioctl;
> +};
> +
> +/*
> + * IOCTL to get connector read limits.
> + */
> +
> +struct connector_get_rd_limits_in {
> +	struct nd_handle in;
> +};
> +
> +struct connector_get_rd_limits_out {
> +	struct nd_read_limits out;
> +};
> +
> +union connector_get_rd_limits_ioctl {
> +	struct connector_get_rd_limits_in in;
> +	struct connector_get_rd_limits_out out;
> +};
> +
> +struct pkt_nd_connector_get_rd_limits {
> +	struct ndv_packet_hdr_control_1 hdr;
> +	union connector_get_rd_limits_ioctl ioctl;
> +};
> +
> +/*
> + * IOCTL to get connector private data.
> + */
> +union connector_get_priv_data_ioctl {
> +	struct nd_handle in;
> +	u8 out[MAX_PRIVATE_DATA_LEN];
> +};
> +
> +struct pkt_nd_connector_get_priv_data {
> +	struct ndv_packet_hdr_control_1 hdr;
> +	union connector_get_priv_data_ioctl ioctl;
> +};
> +
> +
> +/*
> + * IOCTL get peer address.
> + */
> +
> +union connector_get_peer_addr_ioctl {
> +	struct nd_handle in;
> +	union nd_sockaddr_inet out;
> +};
> +
> +struct pkt_nd_connector_get_peer_addr {
> +	struct ndv_packet_hdr_control_1 hdr;
> +	union connector_get_peer_addr_ioctl ioctl;
> +};
> +
> +/*
> + * IOCTL to get connector address.
> + */
> +
> +union connector_get_addr_ioctl {
> +	struct nd_handle in;
> +	union nd_sockaddr_inet out;
> +};
> +
> +struct pkt_nd_connector_get_addr {
> +	struct ndv_packet_hdr_control_1 hdr;
> +	union connector_get_addr_ioctl ioctl;
> +};
> +
> +/*
> + * IOCTL for disconnect notification.
> + */
> +
> +union connector_notify_disconnect_ioctl {
> +	struct nd_handle in;
> +};
> +
> +struct pkt_nd_connector_notify_disconnect {
> +	struct ndv_packet_hdr_control_1 hdr;
> +	union connector_notify_disconnect_ioctl ioctl;
> +};
> +
> +union connector_disconnect_ioctl {
> +	struct nd_handle in;
> +};
> +
> +struct pkt_nd_connector_disconnect {
> +	struct ndv_packet_hdr_control_1 hdr;
> +	union connector_notify_disconnect_ioctl ioctl;
> +};
> +
> +/*
> + * IOCTLs for QP operations.
> + */
> +
> +/*
> + * Create qp IOCTL.
> + */
> +
> +struct qp_db_gpa {
> +	u32 byte_count;
> +	u32 byte_offset;
> +	u64 pfn_array[1];
> +};
> +
> +struct create_qp_ext_data {
> +	union {
> +		u32 cnt;
> +		u64 padding;
> +	};
> +	/* offsets are from start of extended data struct
> +	 * and should start on 8 byte boundary
> +	 */
> +	struct pkt_fld fields[MLX4_IB_CREATE_QP_MAPPINGS_MAX];
> +	struct qp_db_gpa db_gpa;
> +	struct gpa_range qpbuf_gpa;
> +};
> +
> +union create_qp_ioctl {
> +	struct nd_create_qp input;
> +	struct nd_resource_descriptor resrc_desc;
> +};
> +
> +union create_qp_mappings {
> +	struct ibv_create_qp qp_in;
> +	struct ibv_create_qp_resp qp_resp;
> +};
> +
> +struct pkt_nd_create_qp {
> +	struct ndv_packet_hdr_control_1 hdr;
> +
> +	union create_qp_ioctl ioctl;
> +	union create_qp_mappings mappings;
> +
> +	/*
> +	 * Extended data.
> +	 */
> +	struct create_qp_ext_data ext_data;
> +};
> +
> +/*
> + * IOCTL to flush a QP.
> + */
> +struct flush_qp_ioctl {
> +	struct nd_handle in;
> +	enum ibv_qp_state out;
> +};
> +
> +struct pkt_nd_flush_qp {
> +	struct ndv_packet_hdr_control_1 hdr;
> +	struct flush_qp_ioctl ioctl;
> +};
> +
> +/*
> + * Memory Region IOCTLS
> + */
> +union create_mr_ioctl {
> +	struct nd_handle in;
> +	u64 out;
> +};
> +
> +struct pkt_nd_create_mr {
> +	struct ndv_packet_hdr_control_1 hdr;
> +	union create_mr_ioctl ioctl;
> +};
> +
> +struct mr_out {
> +	u32 lkey;
> +	u32 rkey;
> +	unsigned long activity_id;
> +};
> +
> +
> +union register_mr_ioctl {
> +	struct nd_mr_register in;
> +	struct mr_out out;
> +};
> +
> +struct pkt_nd_register_mr {
> +	struct ndv_packet_hdr_control_1 hdr;
> +	union  register_mr_ioctl ioctl;
> +};
> +
> +struct deregister_mr_ioctl {
> +	struct nd_handle in;
> +};
> +
> +struct pkt_nd_deregister_mr {
> +	struct ndv_packet_hdr_control_1 hdr;
> +	struct deregister_mr_ioctl ioctl;
> +};
> +
> +/*
> + * IOCTL to disconnect connector
> + */
> +
> +/*
> + * Create PD IOCTL.
> + */
> +struct nd_create_pd_ioctl {
> +	union {
> +		struct nd_handle in;
> +		u64 out_handle;
> +	};
> +	struct ibv_alloc_pd_resp resp;
> +};
> +
> +struct pkt_nd_pd_create {
> +	struct ndv_packet_hdr_control_1 hdr;
> +	struct nd_create_pd_ioctl ioctl;
> +};
> +
> +/*
> + * Free Handle. Check the layout with Luke.
> + *
> + */
> +struct free_handle_ioctl {
> +	struct nd_handle in;
> +};
> +
> +struct pkt_nd_free_handle {
> +	struct ndv_packet_hdr_control_1 hdr;
> +	struct free_handle_ioctl ioctl;
> +};
> +
> +/*
> + * Cancel I/O.
> + */
> +
> +struct cancel_io_ioctl {
> +	struct nd_handle in;
> +};
> +
> +struct pkt_nd_cancel_io {
> +	struct ndv_packet_hdr_control_1 hdr;
> +	struct cancel_io_ioctl ioctl;
> +};
> +
> +/*
> + * Connector states:
> + */
> +
> +enum connector_state {
> +	HVND_CON_INCOMING,
> +	HVND_CON_INCOMING_ESTABLISHED,
> +	HVND_CON_INCOMING_REJECTED,
> +	HVND_CON_OUTGOING_REQUEST
> +};
> +
> +
> +/*
> + * Adaptor query IOCTL.
> + */
> +struct nd_adap_query_ioctl {
> +	union {
> +		struct nd_adapter_query ad_q;
> +		struct adapter_info_v2 ad_info;
> +	};
> +};
> +
> +struct pkt_nd_query_adaptor {
> +	struct ndv_packet_hdr_control_1 hdr;
> +	struct nd_adap_query_ioctl ioctl;
> +};
> +
> +struct  nd_ioctl {
> +	union {
> +		struct nd_handle handle;
> +		u8 raw_buffer[NDV_MAX_IOCTL_BUFFER_SIZE];
> +	};
> +};
> +
> +struct pkt_nd_provider_ioctl {
> +	struct ndv_packet_hdr_control_1 hdr;
> +	struct nd_ioctl ioctl;
> +};
> +
> +struct hvnd_ib_pd {
> +	struct ib_pd ibpd;
> +	u32	pdn;
> +	u64	handle;
> +};
> +
> +struct hvnd_work {
> +	struct work_struct work;
> +	void *callback_arg;
> +};
> +
> +struct hvnd_disconnect_work {
> +	struct work_struct work;
> +	int status;
> +	void *callback_arg;
> +};
> +
> +/*
> +struct hvnd_delayed_work {
> +	struct delayed_work work;
> +	void *callback_arg;
> +};
> +*/
> +
> +enum hvnd_cm_state {
> +	hvnd_cm_idle = 0,
> +	hvnd_cm_connect_reply_sent, 	//active
> +	hvnd_cm_connect_reply_refused,
> +	hvnd_cm_connect_received,	//active
> +	hvnd_cm_connect_request_sent,	//passive
> +	hvnd_cm_accept_sent,
> +	hvnd_cm_close_sent,
> +	hvnd_cm_established_sent,
> +};
> +
> +struct incoming_pkt {
> +	struct list_head list_entry;
> +	char pkt[0];
> +};
> +
> +struct hvnd_ep_obj {
> +/*
> +	spinlock_t ep_lk;
> +	bool to_be_destroyed;
> +	bool io_outstanding;
> +
> +	wait_queue_head_t wait;
> +	bool stopped;
> +	atomic_t process_refcnt; // how many NDV_PKT_ID1_COMPLETE packets we are currently processing
> +*/
> +	bool stopping;
> +	wait_queue_head_t wait_pending;
> +	atomic_t nr_requests_pending;
> +
> +	enum nd_resource_type type;
> +	enum connector_state state; //KYS need to look at locking
> +	struct iw_cm_id *cm_id;
> +	enum hvnd_cm_state cm_state;
> +	struct completion block_event;
> +	struct completion disconnect_event;
> +	struct completion connector_accept_event;
> +	int connector_accept_status;
> +	u64 ep_handle;
> +	spinlock_t      incoming_pkt_list_lock;
> +	struct list_head incoming_pkt_list;
> +	struct hvnd_ep_obj *parent;
> +	struct hvnd_dev *nd_dev;
> +	struct hvnd_ucontext *uctx;
> +	struct hvnd_work wrk;
> +	struct hvnd_cq *cq;
> +	u8 ord;
> +	u8 ird;
> +	char priv_data[MAX_PRIVATE_DATA_LEN];
> +	bool incoming;
> +	atomic_t disconnect_notified;
> +	u64 outstanding_handle;
> +	u32 local_irp;
> +	struct hvnd_ep_obj *outstanding_ep;
> +	struct pkt_nd_connector_connect connector_connect_pkt;
> +	int connector_connect_retry;
> +};
> +
> +struct hvnd_ucontext {
> +	struct ib_ucontext      ibucontext;
> +	struct list_head listentry;
> +	struct ndv_pkt_hdr_create_1 create_pkt;
> +	struct ndv_pkt_hdr_create_1 create_pkt_ovl; /* Overlap handle */
> +	struct pkt_nd_provider_ioctl pr_init_pkt;
> +	union ndv_context_handle file_handle;
> +	union ndv_context_handle file_handle_ovl;
> +
> +	struct pkt_nd_open_adapter o_adap_pkt;
> +
> +	u64 adaptor_hdl;
> +
> +	/*
> +	 * Protection domain state.
> +	 */
> +	struct pkt_nd_pd_create pd_cr_pkt;
> +
> +	u64 uar_base;
> +	u64 bf_base;
> +	u32 bf_buf_size;
> +	u32 bf_offset;
> +	u32 cqe_size;
> +	u32 max_qp_wr;
> +	u32 max_sge;
> +	u32 max_cqe;
> +	u32 num_qps;
> +
> +	/*
> +	 * State to manage dorbell pages:
> +	 */
> +	struct list_head        db_page_list;
> +	struct mutex            db_page_mutex;
> +
> +	atomic_t refcnt;
> +
> +};
> +
> +struct hvnd_dev {
> +	struct ib_device ibdev;
> +	struct hv_device *hvdev;
> +	u32 device_cap_flags;
> +	unsigned char nports;
> +	bool ib_active;
> +
> +	/* State to manage interaction with the host.
> +	 */
> +
> +	spinlock_t uctxt_lk;
> +	struct list_head listentry;
> +
> +	unsigned long mmio_sz;
> +	unsigned long mmio_start_addr;
> +	struct resource mmio_resource;
> +	void *mmio_virt;
> +
> +	unsigned long negotiated_version;
> +	union ndv_packet_init init_pkt;
> +	struct ndv_pkt_hdr_init_resources_1 resources;
> +	struct ndv_pkt_hdr_bind_1 bind_pkt;
> +
> +	struct ndv_pkt_hdr_create_1 global_create_pkt;
> +	union ndv_context_handle global_file_handle;
> +
> +	struct semaphore query_pkt_sem;
> +	bool query_pkt_set;
> +	struct pkt_nd_query_adaptor query_pkt;
> +
> +	/*
> +	 * ID tables.
> +	 */
> +	spinlock_t id_lock;
> +
> +	struct idr cqidr;
> +	struct idr qpidr;
> +	struct idr mmidr;
> +	struct idr irpidr;
> +	struct idr uctxidr;
> +	atomic_t open_cnt;
> +
> +	char ip_addr[4];
> +	char mac_addr[6];
> +	struct completion addr_set;
> +	int bind_complete;
> +	struct mutex bind_mutex;
> +};
> +
> +struct hvnd_cq {
> +	struct ib_cq ibcq;
> +	void *cq_buf;
> +	void *db_addr;
> +	u32 arm_sn;
> +	u32 entries;
> +
> +	u32 cqn;
> +	u32 cqe;
> +	u64 cq_handle;
> +
> +	struct ib_umem         *umem;
> +	struct ib_umem	*db_umem;
> +	struct mlx4_ib_user_db_page user_db_page;
> +	struct hvnd_ucontext *uctx;
> +	struct hvnd_ep_obj ep_object; //KYS need to clean this up; have a cq irp state
> +	bool monitor;
> +	bool upcall_pending;
> +};
> +
> +struct hvnd_qp {
> +	struct ib_qp ibqp;
> +	void *qp_buf;
> +	void *db_addr;
> +	u32  buf_size;
> +	u8   port;
> +	struct hvnd_dev *nd_dev;
> +
> +	__u8    log_sq_bb_count;
> +	__u8    log_sq_stride;
> +	__u8    sq_no_prefetch;
> +
> +	int rq_wqe_cnt;
> +	int rq_wqe_shift;
> +	int rq_max_gs;
> +
> +	int sq_wqe_cnt;
> +	int sq_wqe_shift;
> +	int sq_max_gs;
> +
> +	u32 max_inline_data;
> +
> +	u32 initiator_q_depth;
> +	u32 initiator_request_sge;
> +
> +	u32 receive_q_depth;
> +	u32 receive_request_sge;
> +
> +	struct hvnd_cq *recv_cq;
> +	struct hvnd_cq *send_cq;
> +
> +	u64 receive_cq_handle;
> +	u64 initiator_cq_handle;
> +	u64 pd_handle;
> +
> +	u64 qp_handle;
> +	u32 qpn;
> +	u32 max_send_wr;
> +	u32 max_recv_wr;
> +	u32 max_send_sge;
> +	u32 max_recv_sge;
> +
> +	struct ib_umem         *umem;
> +	struct ib_umem	*db_umem;
> +	struct mlx4_ib_user_db_page user_db_page;
> +	struct hvnd_ucontext *uctx;
> +	struct iw_cm_id *cm_id;
> +
> +	/*
> +	 * Current QP state; need to look at locking.
> +	 * XXXKYS
> +	 */
> +	enum ib_qp_state qp_state;
> +	bool cq_notify;
> +	wait_queue_head_t wait;
> +	atomic_t refcnt;
> +	struct hvnd_ep_obj *connector;
> +};
> +
> +struct hvnd_mr {
> +	struct ib_mr ibmr;
> +	struct hvnd_ib_pd *pd;
> +	struct ib_umem *umem;
> +	u64 start;
> +	u64 length;
> +	u64 virt;
> +	int acc;
> +	u64 mr_handle;
> +	u32 mr_lkey;
> +	u32 mr_rkey;
> +};
> +
> +struct hvnd_cookie {
> +	struct completion host_event;
> +	void *pkt;
> +};
> +
> +/*
> + * Definitions to retrieve the IP address.
> + */
> +
> +#define HVND_CURRENT_VERSION 0
> +
> +struct hvnd_ipaddr_tuple {
> +	char mac_address[ETH_ALEN];
> +	struct sockaddr addr;
> +};
> +
> +struct hvnd_msg {
> +	int status;
> +	struct hvnd_ipaddr_tuple ip_tuple;
> +};
> +
> +static inline struct hvnd_ib_pd *to_nd_pd(struct ib_pd *pd)
> +{
> +	return container_of(pd, struct hvnd_ib_pd, ibpd);
> +}
> +
> +static inline struct hvnd_dev *to_nd_dev(struct ib_device *ibdev)
> +{
> +	return container_of(ibdev, struct hvnd_dev, ibdev);
> +}
> +
> +static inline struct hvnd_cq *to_nd_cq(struct ib_cq *ibcq)
> +{
> +	return container_of(ibcq, struct hvnd_cq, ibcq);
> +}
> +
> +static inline struct hvnd_qp *to_nd_qp(struct ib_qp *ibqp)
> +{
> +	return container_of(ibqp, struct hvnd_qp, ibqp);
> +}
> +
> +static inline struct hvnd_ucontext *to_nd_context(struct ib_ucontext *ibucontext)
> +{
> +	return container_of(ibucontext, struct hvnd_ucontext, ibucontext);
> +}
> +
> +static inline struct hvnd_ucontext *get_uctx_from_pd(struct ib_pd *pd)
> +{
> +	return to_nd_context(pd->uobject->context);
> +}
> +
> +static inline struct hvnd_mr *to_nd_mr(struct ib_mr *ibmr)
> +{
> +	return container_of(ibmr, struct hvnd_mr, ibmr);
> +}
> +/*
> + * ID management.
> + */
> +
> +static inline int insert_handle(struct hvnd_dev *dev, struct idr *idr,
> +				void *handle, u32 id)
> +{
> +	int ret;
> +	unsigned long flags;
> +
> +	idr_preload(GFP_KERNEL);
> +	spin_lock_irqsave(&dev->id_lock, flags);
> +
> +	ret = idr_alloc(idr, handle, id, id + 1, GFP_ATOMIC);
> +
> +	spin_unlock_irqrestore(&dev->id_lock, flags);
> +	idr_preload_end();
> +
> +	BUG_ON(ret == -ENOSPC);
> +	return ret < 0 ? ret : 0;
> +}
> +
> +static inline void remove_handle(struct hvnd_dev *dev, struct idr *idr, u32 id)
> +{
> +	unsigned long flags;
> +
> +	spin_lock_irqsave(&dev->id_lock, flags);
> +	idr_remove(idr, id);
> +	spin_unlock_irqrestore(&dev->id_lock, flags);
> +}
> +
> +static inline struct hvnd_cq *get_cqp(struct hvnd_dev *dev, u32 cqid)
> +{
> +	struct hvnd_cq *cqp;
> +	unsigned long flags;
> +
> +	spin_lock_irqsave(&dev->id_lock, flags);
> +	cqp =  idr_find(&dev->cqidr, cqid);
> +	spin_unlock_irqrestore(&dev->id_lock, flags);
> +
> +	return cqp;
> +}
> +
> +static inline struct hvnd_qp *get_qpp(struct hvnd_dev *dev, u32 qpid)
> +{
> +	struct hvnd_qp *qpp;
> +	unsigned long flags;
> +
> +	spin_lock_irqsave(&dev->id_lock, flags);
> +	qpp = idr_find(&dev->qpidr, qpid);
> +	spin_unlock_irqrestore(&dev->id_lock, flags);
> +
> +	return qpp;
> +}
> +
> +static inline struct hvnd_ucontext *get_uctx(struct hvnd_dev *dev, u32 pid)
> +{
> +	struct hvnd_ucontext *uctx;
> +	unsigned long flags;
> +
> +	spin_lock_irqsave(&dev->id_lock, flags);
> +	uctx = idr_find(&dev->uctxidr, pid);
> +	spin_unlock_irqrestore(&dev->id_lock, flags);
> +
> +	return uctx;
> +}
> +
> +
> +static inline void *map_irp_to_ctx(struct hvnd_dev *nd_dev, u32 irp)
> +{
> +	void *ctx;
> +	unsigned long flags;
> +
> +	spin_lock_irqsave(&nd_dev->id_lock, flags);
> +	ctx = idr_find(&nd_dev->irpidr, irp);
> +	spin_unlock_irqrestore(&nd_dev->id_lock, flags);
> +
> +	return ctx;
> +}
> +
> +
> +
> +void hvnd_callback(void *context);
> +int hvnd_negotiate_version(struct hvnd_dev *nd_dev);
> +int hvnd_init_resources(struct hvnd_dev *nd_dev);
> +int hvnd_bind_nic(struct hvnd_dev *nd_dev, bool un_bind, char *ip_addr, char *mac_addr);
> +int hvnd_open_adaptor(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx);
> +int hvnd_close_adaptor(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx);
> +int hvnd_query_adaptor(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx);
> +int  hvnd_create_pd(struct hvnd_ucontext *uctx, struct hvnd_dev *nd_dev,
> +		    struct hvnd_ib_pd *hvnd_pd);
> +
> +/*
> + * CQ operations.
> + */
> +int hvnd_create_cq(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
> +		   struct hvnd_cq *cq);
> +int hvnd_destroy_cq(struct hvnd_dev *nd_dev, struct hvnd_cq *cq);
> +int hvnd_notify_cq(struct hvnd_dev *nd_dev, struct hvnd_cq *cq,
> +		   u32 notify_type, u64 irp_handle);
> +
> +/*
> + * QP operations.
> + */
> +int hvnd_create_qp(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
> +		   struct hvnd_qp *qp);
> +
> +int hvnd_free_qp(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
> +		 struct hvnd_qp *qp);
> +
> +int hvnd_flush_qp(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
> +		 struct hvnd_qp *qp);
> +
> +/*
> + * MR operations.
> + */
> +
> +int hvnd_cr_mr(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
> +		u64 pd_handle, u64 *mr_handle);
> +
> +int hvnd_free_mr(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
> +			u64 handle);
> +
> +int hvnd_mr_register(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
> +		     struct hvnd_mr *mr);
> +int hvnd_deregister_mr(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
> +			u64 handle);
> +
> +/*
> + * Listner operations
> + */
> +int hvnd_cr_listener(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx, u64 *handle);
> +
> +
> +int hvnd_free_listener(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
> +			u64 listener_handle);
> +
> +int hvnd_bind_listener(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
> +			u64 listener_handle, union nd_sockaddr_inet *addr);
> +
> +int hvnd_listen_listener(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
> +			u64 listener_handle, u32 backlog);
> +
> +int hvnd_get_addr_listener(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
> +			u64 listener_handle, union nd_sockaddr_inet *addr);
> +
> +int hvnd_get_connection_listener(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
> +			u64 listener_handle, u64 connector_handle,
> +			u64 irp_handle);
> +
> +/*
> + * Connector operations.
> + */
> +int hvnd_cr_connector(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
> +			u64 *connector_handle);
> +
> +int hvnd_free_connector(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
> +			u64 handle);
> +
> +int hvnd_cancelio_connector(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
> +			u64 handle);
> +int hvnd_bind_connector(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
> +			u64 handle, union nd_sockaddr_inet *addr);
> +
> +int hvnd_connector_connect(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
> +			u64 connector_handle, u32 in_rd_limit, u32 out_rd_limit,
> +			u32 priv_data_length, const u8 *priv_data,
> +			u64 qp_handle, struct if_physical_addr *phys_addr,
> +			union nd_sockaddr_inet *dest_addr, struct hvnd_ep_obj *ep);
> +
> +int hvnd_connector_complete_connect(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
> +			u64 connector_handle,  enum ibv_qp_state *qp_state);
> +
> +int hvnd_connector_accept(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
> +			u64 connector_handle,
> +			u64 qp_handle,
> +			u32 in_rd_limit, u32 out_rd_limit,
> +			u32 priv_data_length, const u8 *priv_data,
> +			enum ibv_qp_state *qp_state, struct hvnd_ep_obj *ep);
> +
> +int hvnd_connector_reject(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
> +			u64 connector_handle,
> +			u32 priv_data_length, u8 *priv_data,
> +			enum ibv_qp_state *qp_state);
> +
> +int hvnd_connector_get_rd_limits(struct hvnd_dev *nd_dev,
> +			struct hvnd_ucontext *uctx,
> +			u64 connector_handle,
> +			struct nd_read_limits *rd_limits);
> +
> +int hvnd_connector_get_priv_data(struct hvnd_dev *nd_dev,
> +			struct hvnd_ucontext *uctx,
> +			u64 connector_handle,
> +			u8 *priv_data);
> +
> +int hvnd_connector_get_peer_addr(struct hvnd_dev *nd_dev,
> +			struct hvnd_ucontext *uctx,
> +			u64 connector_handle,
> +			union nd_sockaddr_inet *peer_addr);
> +
> +int hvnd_connector_get_local_addr(struct hvnd_dev *nd_dev,
> +			struct hvnd_ucontext *uctx,
> +			u64 connector_handle,
> +			union nd_sockaddr_inet *local_addr);
> +
> +int hvnd_connector_notify_disconnect(struct hvnd_dev *nd_dev,
> +			struct hvnd_ucontext *uctx,
> +			u64 connector_handle, struct hvnd_ep_obj *ep);
> +
> +
> +int hvnd_connector_disconnect(struct hvnd_dev *nd_dev,
> +			struct hvnd_ucontext *uctx,
> +			u64 connector_handle, struct hvnd_ep_obj *ep);
> +
> +int hvnd_free_handle(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
> +			u64 handle, u32 ioctl);
> +
> +int hvnd_cancel_io(struct hvnd_ep_obj *ep_object);
> +
> +char *hvnd_get_op_name(int ioctl);
> +
> +void hvnd_acquire_uctx_ref(struct hvnd_ucontext *uctx);
> +void hvnd_drop_uctx_ref(struct hvnd_dev *nd_dev,struct hvnd_ucontext *uctx);
> +void hvnd_process_events(struct work_struct *work);
> +
> +void hvnd_process_cq_event_pending(struct hvnd_ep_obj *ep, int status);
> +void hvnd_process_cq_event_complete(struct hvnd_ep_obj *ep, int status);
> +void hvnd_process_connector_accept(struct hvnd_ep_obj *ep_object, int status);
> +void hvnd_process_notify_disconnect(struct hvnd_ep_obj *ep_object, int status);
> +void hvnd_process_disconnect(struct hvnd_ep_obj *ep_object, int status);
> +
> +void put_irp_handle(struct hvnd_dev *nd_dev, u32 irp);
> +int get_irp_handle(struct hvnd_dev *nd_dev, u32 *local, void *irp_ctx);
> +
> +void hvnd_init_hdr(struct ndv_packet_hdr_control_1 *hdr,
> +			  u32 data_sz, u32 local, u32 remote,
> +			  u32 ioctl_code,
> +			  u32 ext_data_sz, u32 ext_data_offset,
> +			  u64 irp_handle);
> +
> +int  hvnd_send_ioctl_pkt(struct hvnd_dev *nd_dev,
> +				struct ndv_packet_hdr_control_1 *hdr,
> +				u32 pkt_size, u64 cookie);
> +
> +int hvnd_get_outgoing_rdma_addr(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
> +				union nd_sockaddr_inet *og_addr);
> +
> +int hvnd_get_neigh_mac_addr(struct sockaddr *local, struct sockaddr *remote, char *mac_addr);
> +
> +void hvnd_addr_init(void);
> +
> +void hvnd_addr_deinit(void);
> +
> +bool ep_add_work_pending(struct hvnd_ep_obj *ep_object);
> +void ep_del_work_pending(struct hvnd_ep_obj *ep_object);
> +void ep_stop(struct hvnd_ep_obj *ep_object);
> +
> +#define current_pid()           (current->pid)
> +/*
> + * NT STATUS defines.
> + */
> +
> +#define STATUS_SUCCESS 0x0
> +#define STATUS_PENDING 0x00000103
> +#define STATUS_CANCELLED 0xC0000120
> +#define STATUS_DISCONNECTED 0xC000020C
> +#define STATUS_TIMEOUT 0xC00000B5
> +
> +void inc_ioctl_counter_request(unsigned ioctl);
> +void inc_ioctl_counter_response(unsigned ioctl);
> +
> +#define NDV_PROTOCOL_VAERSION_INVALID -1
> +#define NDV_PACKET_INIT_SIZE 16 /* Size of the INIT packet */
> +
> +#define HVND_RING_SZ (PAGE_SIZE * 64)
> +
> +/* logging levels */
> +#define HVND_ERROR 0
> +#define HVND_WARN 1
> +#define HVND_INFO 2
> +#define HVND_DEBUG 3
> +
> +extern int hvnd_log_level;
> +
> +#define hvnd_error(fmt, args...)	hvnd_log(HVND_ERROR, fmt, ##args)
> +#define hvnd_warn(fmt, args...)		hvnd_log(HVND_WARN, fmt, ##args)
> +#define hvnd_info(fmt, args...)		hvnd_log(HVND_INFO, fmt, ##args)
> +#define hvnd_debug(fmt, args...)	hvnd_log(HVND_DEBUG, fmt, ##args)
> +
> +#define hvnd_log(level, fmt, args...) \
> +do { \
> +	if (unlikely(hvnd_log_level >= (level))) \
> +		printk(KERN_ERR "hvnd %s[%u]: " fmt, __func__, __LINE__, ##args); \
> +} while (0)
> +
> +#endif /* _VMBUS_RDMA_H */
> diff --git a/drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142/COPYING b/drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142/COPYING
> deleted file mode 100644
> index f0960c946b07..000000000000
> --- a/drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142/COPYING
> +++ /dev/null
> @@ -1,339 +0,0 @@
> -
> -"This software program is licensed subject to the GNU General Public License
> -(GPL). Version 2, June 1991, available at
> -<http://www.fsf.org/copyleft/gpl.html>"
> -
> -GNU General Public License
> -
> -Version 2, June 1991
> -
> -Copyright (C) 1989, 1991 Free Software Foundation, Inc.
> -51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
> -
> -Everyone is permitted to copy and distribute verbatim copies of this license
> -document, but changing it is not allowed.
> -
> -Preamble
> -
> -The licenses for most software are designed to take away your freedom to
> -share and change it. By contrast, the GNU General Public License is intended
> -to guarantee your freedom to share and change free software--to make sure
> -the software is free for all its users. This General Public License applies
> -to most of the Free Software Foundation's software and to any other program
> -whose authors commit to using it. (Some other Free Software Foundation
> -software is covered by the GNU Library General Public License instead.) You
> -can apply it to your programs, too.
> -
> -When we speak of free software, we are referring to freedom, not price. Our
> -General Public Licenses are designed to make sure that you have the freedom
> -to distribute copies of free software (and charge for this service if you
> -wish), that you receive source code or can get it if you want it, that you
> -can change the software or use pieces of it in new free programs; and that
> -you know you can do these things.
> -
> -To protect your rights, we need to make restrictions that forbid anyone to
> -deny you these rights or to ask you to surrender the rights. These
> -restrictions translate to certain responsibilities for you if you distribute
> -copies of the software, or if you modify it.
> -
> -For example, if you distribute copies of such a program, whether gratis or
> -for a fee, you must give the recipients all the rights that you have. You
> -must make sure that they, too, receive or can get the source code. And you
> -must show them these terms so they know their rights.
> -
> -We protect your rights with two steps: (1) copyright the software, and (2)
> -offer you this license which gives you legal permission to copy, distribute
> -and/or modify the software.
> -
> -Also, for each author's protection and ours, we want to make certain that
> -everyone understands that there is no warranty for this free software. If
> -the software is modified by someone else and passed on, we want its
> -recipients to know that what they have is not the original, so that any
> -problems introduced by others will not reflect on the original authors'
> -reputations.
> -
> -Finally, any free program is threatened constantly by software patents. We
> -wish to avoid the danger that redistributors of a free program will
> -individually obtain patent licenses, in effect making the program
> -proprietary. To prevent this, we have made it clear that any patent must be
> -licensed for everyone's free use or not licensed at all.
> -
> -The precise terms and conditions for copying, distribution and modification
> -follow.
> -
> -TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
> -
> -0. This License applies to any program or other work which contains a notice
> -   placed by the copyright holder saying it may be distributed under the
> -   terms of this General Public License. The "Program", below, refers to any
> -   such program or work, and a "work based on the Program" means either the
> -   Program or any derivative work under copyright law: that is to say, a
> -   work containing the Program or a portion of it, either verbatim or with
> -   modifications and/or translated into another language. (Hereinafter,
> -   translation is included without limitation in the term "modification".)
> -   Each licensee is addressed as "you".
> -
> -   Activities other than copying, distribution and modification are not
> -   covered by this License; they are outside its scope. The act of running
> -   the Program is not restricted, and the output from the Program is covered
> -   only if its contents constitute a work based on the Program (independent
> -   of having been made by running the Program). Whether that is true depends
> -   on what the Program does.
> -
> -1. You may copy and distribute verbatim copies of the Program's source code
> -   as you receive it, in any medium, provided that you conspicuously and
> -   appropriately publish on each copy an appropriate copyright notice and
> -   disclaimer of warranty; keep intact all the notices that refer to this
> -   License and to the absence of any warranty; and give any other recipients
> -   of the Program a copy of this License along with the Program.
> -
> -   You may charge a fee for the physical act of transferring a copy, and you
> -   may at your option offer warranty protection in exchange for a fee.
> -
> -2. You may modify your copy or copies of the Program or any portion of it,
> -   thus forming a work based on the Program, and copy and distribute such
> -   modifications or work under the terms of Section 1 above, provided that
> -   you also meet all of these conditions:
> -
> -   * a) You must cause the modified files to carry prominent notices stating
> -        that you changed the files and the date of any change.
> -
> -   * b) You must cause any work that you distribute or publish, that in
> -        whole or in part contains or is derived from the Program or any part
> -        thereof, to be licensed as a whole at no charge to all third parties
> -        under the terms of this License.
> -
> -   * c) If the modified program normally reads commands interactively when
> -        run, you must cause it, when started running for such interactive
> -        use in the most ordinary way, to print or display an announcement
> -        including an appropriate copyright notice and a notice that there is
> -        no warranty (or else, saying that you provide a warranty) and that
> -        users may redistribute the program under these conditions, and
> -        telling the user how to view a copy of this License. (Exception: if
> -        the Program itself is interactive but does not normally print such
> -        an announcement, your work based on the Program is not required to
> -        print an announcement.)
> -
> -   These requirements apply to the modified work as a whole. If identifiable
> -   sections of that work are not derived from the Program, and can be
> -   reasonably considered independent and separate works in themselves, then
> -   this License, and its terms, do not apply to those sections when you
> -   distribute them as separate works. But when you distribute the same
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> -   distribution of the whole must be on the terms of this License, whose
> -   permissions for other licensees extend to the entire whole, and thus to
> -   each and every part regardless of who wrote it.
> -
> -   Thus, it is not the intent of this section to claim rights or contest
> -   your rights to work written entirely by you; rather, the intent is to
> -   exercise the right to control the distribution of derivative or
> -   collective works based on the Program.
> -
> -   In addition, mere aggregation of another work not based on the Program
> -   with the Program (or with a work based on the Program) on a volume of a
> -   storage or distribution medium does not bring the other work under the
> -   scope of this License.
> -
> -3. You may copy and distribute the Program (or a work based on it, under
> -   Section 2) in object code or executable form under the terms of Sections
> -   1 and 2 above provided that you also do one of the following:
> -
> -   * a) Accompany it with the complete corresponding machine-readable source
> -        code, which must be distributed under the terms of Sections 1 and 2
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> -Copyright (C) yyyy  name of author
> -
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> -under the terms of the GNU General Public License as published by the Free
> -Software Foundation; either version 2 of the License, or (at your option)
> -any later version.
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> -ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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> -it starts in an interactive mode:
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> -Gnomovision version 69, Copyright (C) year name of author Gnomovision comes
> -with ABSOLUTELY NO WARRANTY; for details type 'show w'.  This is free
> -software, and you are welcome to redistribute it under certain conditions;
> -type 'show c' for details.
> -
> -The hypothetical commands 'show w' and 'show c' should show the appropriate
> -parts of the General Public License. Of course, the commands you use may be
> -called something other than 'show w' and 'show c'; they could even be
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> -
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> -necessary. Here is a sample; alter the names:
> -
> -Yoyodyne, Inc., hereby disclaims all copyright interest in the program
> -'Gnomovision' (which makes passes at compilers) written by James Hacker.
> -
> -signature of Ty Coon, 1 April 1989
> -Ty Coon, President of Vice
> -
> -This General Public License does not permit incorporating your program into
> -proprietary programs. If your program is a subroutine library, you may
> -consider it more useful to permit linking proprietary applications with the
> -library. If this is what you want to do, use the GNU Library General Public
> -License instead of this License.
> diff --git a/drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142/Makefile b/drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142/Makefile
> deleted file mode 100644
> index 0373d95341c1..000000000000
> --- a/drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142/Makefile
> +++ /dev/null
> @@ -1,3 +0,0 @@
> -obj-$(CONFIG_HYPERV_INFINIBAND_ND)	+= hv_network_direct_142.o
> -
> -hv_network_direct_142-y := provider.o vmbus_rdma.o hvnd_addr.o
> diff --git a/drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142/hvnd_addr.c b/drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142/hvnd_addr.c
> deleted file mode 100644
> index c8c2295b63af..000000000000
> --- a/drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142/hvnd_addr.c
> +++ /dev/null
> @@ -1,136 +0,0 @@
> -/*
> - * Copyright (c) 2014, Microsoft Corporation.
> - *
> - * Author:
> - *   K. Y. Srinivasan <kys@microsoft.com>
> - *
> - * This program is free software; you can redistribute it and/or modify it
> - * under the terms of the GNU General Public License version 2 as published
> - * by the Free Software Foundation.
> - *
> - * This program is distributed in the hope that it will be useful, but
> - * WITHOUT ANY WARRANTY; without even the implied warranty of
> - * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
> - * NON INFRINGEMENT.  See the GNU General Public License for more
> - * details.
> - *
> - * Bug fixes/enhancements: Long Li <longli@microsoft.com>
> - */
> -
> -#include <linux/completion.h>
> -#include <linux/module.h>
> -#include <linux/errno.h>
> -#include <linux/hyperv.h>
> -#include <linux/efi.h>
> -#include <linux/slab.h>
> -#include <linux/cred.h>
> -#include <linux/sched.h>
> -#include <linux/types.h>
> -#include <linux/completion.h>
> -#include <linux/scatterlist.h>
> -#include <rdma/ib_umem.h>
> -#include <rdma/ib_addr.h>
> -
> -#include "vmbus_rdma.h"
> -
> -
> -#include <linux/semaphore.h>
> -#include <linux/fs.h>
> -#include <linux/nls.h>
> -#include <linux/workqueue.h>
> -#include <linux/cdev.h>
> -#include <linux/hyperv.h>
> -#include <linux/sched.h>
> -#include <linux/uaccess.h>
> -#include <linux/miscdevice.h>
> -#include <linux/hyperv.h>
> -
> -
> -int hvnd_get_outgoing_rdma_addr(struct hvnd_dev *nd_dev,
> -				struct hvnd_ucontext *uctx,
> -				union nd_sockaddr_inet *og_addr)
> -{
> -	int ret;
> -	/*
> -	 * Query the host and select the first address.
> -	 */
> -	struct pkt_query_addr_list pkt;
> -
> -	// KYS try to avoid having to zero everything
> -	memset(&pkt, 0, sizeof(pkt));
> -
> -	hvnd_init_hdr(&pkt.hdr,
> -		      (sizeof(pkt) -
> -		      sizeof(struct ndv_packet_hdr_control_1)),
> -		      uctx->create_pkt.handle.local,
> -		      uctx->create_pkt.handle.remote,
> -		      IOCTL_ND_ADAPTER_QUERY_ADDRESS_LIST, 0, 0, 0);
> -
> -	pkt.ioctl.in.version = ND_VERSION_1;
> -	pkt.ioctl.in.reserved = 0;
> -	pkt.ioctl.in.handle = uctx->adaptor_hdl;
> -
> -	ret = hvnd_send_ioctl_pkt(nd_dev, &pkt.hdr,
> -				  sizeof(pkt), (u64)&pkt);
> -
> -	if (ret)
> -		return ret;
> -
> -	/*
> -	 * Copy the address out.
> -	 */
> -
> -	memcpy(og_addr, &pkt.ioctl.out[0], sizeof(*og_addr));
> -	return 0;
> -
> -}
> -
> -static struct rdma_addr_client self;
> -
> -struct resolve_cb_context {
> -	struct rdma_dev_addr *addr;
> -	struct completion comp;
> -};
> -
> -void hvnd_addr_init(void)
> -{
> -	rdma_addr_register_client(&self);
> -}
> -
> -void hvnd_addr_deinit(void)
> -{
> -	rdma_addr_unregister_client(&self);
> -}
> -
> -static void resolve_cb(int status, struct sockaddr *src_addr,
> -	     struct rdma_dev_addr *addr, void *context)
> -{
> -	memcpy(((struct resolve_cb_context *)context)->addr, addr, sizeof(struct
> -				rdma_dev_addr));
> -	complete(&((struct resolve_cb_context *)context)->comp);
> -}
> -
> -int hvnd_get_neigh_mac_addr(struct sockaddr *local, struct sockaddr *remote,
> -			    char *mac_addr)
> -{
> -	struct rdma_dev_addr dev_addr;
> -	struct resolve_cb_context ctx;
> -	int ret;
> -
> -	memset(&dev_addr, 0, sizeof(dev_addr));
> -	dev_addr.net = &init_net;
> -	ctx.addr = &dev_addr;
> -	init_completion(&ctx.comp);
> -
> -	ret = rdma_resolve_ip(&self, local, remote, &dev_addr, 1000,
> -			      resolve_cb, &ctx);
> -
> -	if (ret) {
> -		hvnd_error("rdma_resolve_ip failed ret=%d\n", ret);
> -		return ret;
> -	}
> -
> -	wait_for_completion(&ctx.comp);
> -	memcpy(mac_addr, dev_addr.dst_dev_addr, ETH_ALEN);
> -	return ret;
> -}
> diff --git a/drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142/mx_abi.h b/drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142/mx_abi.h
> deleted file mode 100644
> index 8f55cb408de0..000000000000
> --- a/drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142/mx_abi.h
> +++ /dev/null
> @@ -1,232 +0,0 @@
> -/*
> - * Copyright (c) 2005 Topspin Communications.  All rights reserved.
> - * Copyright (c) 2005 Cisco Systems.  All rights reserved.
> - * Copyright (c) 2005 PathScale, Inc.  All rights reserved.
> - *
> - * This software is available to you under a choice of one of two
> - * licenses.  You may choose to be licensed under the terms of the GNU
> - * General Public License (GPL) Version 2, available from the file
> - * COPYING in the main directory of this source tree, or the
> - * OpenIB.org BSD license below:
> - *
> - *     Redistribution and use in source and binary forms, with or
> - *     without modification, are permitted provided that the following
> - *     conditions are met:
> - *
> - *      - Redistributions of source code must retain the above
> - *        copyright notice, this list of conditions and the following
> - *        disclaimer.
> - *
> - *      - Redistributions in binary form must reproduce the above
> - *        copyright notice, this list of conditions and the following
> - *        disclaimer in the documentation and/or other materials
> - *        provided with the distribution.
> - *
> - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
> - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
> - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
> - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
> - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
> - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
> - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
> - * SOFTWARE.
> - *
> - * KYS: made some modifications.
> - */
> -
> -#ifndef MX_ABI_H
> -#define MX_ABI_H
> -
> -
> -
> -/*
> - * Make sure that all structs defined in this file remain laid out so
> - * that they pack the same way on 32-bit and 64-bit architectures (to
> - * avoid incompatibility between 32-bit userspace and 64-bit kernels).
> - * Specifically:
> - *  - Do not use pointer types -- pass pointers in UINT64 instead.
> - *  - Make sure that any structure larger than 4 bytes is padded to a
> - *    multiple of 8 bytes.  Otherwise the structure size will be
> - *    different between 32-bit and 64-bit architectures.
> - */
> -
> -enum ibv_get_context_mappings {
> -	IBV_GET_CONTEXT_UAR,
> -	IBV_GET_CONTEXT_BF,
> -	IBV_GET_CONTEXT_MAPPING_MAX
> -};
> -
> -struct ibv_get_context_req {
> -
> -	union nd_mapping mappings[IBV_GET_CONTEXT_MAPPING_MAX];
> -};
> -
> -struct ibv_get_context_resp {
> -
> -	// mmap UAR and BF
> -	struct nd_mapping_result  mapping_results[IBV_GET_CONTEXT_MAPPING_MAX];
> -
> -	// mmap Blue Flame
> -	int bf_buf_size;
> -	int bf_offset;
> -
> -	// mlx4_query_device result
> -	int max_qp_wr;
> -	int max_sge;
> -	int max_cqe;
> -
> -	// general parameters
> -	u32 cqe_size;
> -	u32 vend_id;
> -	u16 dev_id;
> -	u16 bf_reg_size;
> -	u16 bf_regs_per_page;
> -	u16 reserved1;
> -
> -	// ibv_cmd_get_context result
> -	u32 qp_tab_size;
> -
> -	u32 reserved2;
> -};
> -
> -struct ibv_alloc_pd_resp {
> -	u64 pd_handle;
> -	u32 pdn;
> -	u32 reserved;
> -};
> -
> -struct ibv_reg_mr {
> -	u64 start;
> -	u64 length;
> -	u64 hca_va;
> -	u32 access_flags;
> -	u32 pdn;
> -	u64 pd_handle;
> -};
> -
> -struct ibv_reg_mr_resp {
> -	u64 mr_handle;
> -	u32 lkey;
> -	u32 rkey;
> -};
> -
> -
> -enum mlx4_ib_create_cq_mapping {
> -	MLX4_IB_CREATE_CQ_BUF,
> -	MLX4_IB_CREATE_CQ_DB,
> -	MLX4_IB_CREATE_CQ_ARM_SN,   // Windows specific
> -	MLX4_IB_CREATE_CQ_MAPPING_MAX
> -};
> -
> -#define MLX4_CQ_FLAGS_ARM_IN_KERNEL     1
> -
> -struct ibv_create_cq {
> -	union nd_mapping mappings[MLX4_IB_CREATE_CQ_MAPPING_MAX];
> -	u32  flags;
> -};
> -
> -struct ibv_create_cq_resp {
> -	struct nd_mapping_result mapping_results[MLX4_IB_CREATE_CQ_MAPPING_MAX];
> -	u32  cqn;
> -	u32  cqe;
> -};
> -
> -enum mlx4_ib_create_srq_mappings {
> -	MLX4_IB_CREATE_SRQ_BUF,
> -	MLX4_IB_CREATE_SRQ_DB,
> -	MLX4_IB_CREATE_SRQ_MAPPINGS_MAX
> -};
> -
> -struct ibv_create_srq {
> -	union nd_mapping mappings[MLX4_IB_CREATE_SRQ_MAPPINGS_MAX];
> -};
> -
> -struct ibv_create_srq_resp {
> -	struct nd_mapping_result mapping_results[MLX4_IB_CREATE_SRQ_MAPPINGS_MAX];
> -};
> -
> -enum mlx4_ib_create_qp_mappings {
> -	MLX4_IB_CREATE_QP_BUF,
> -	MLX4_IB_CREATE_QP_DB,
> -	MLX4_IB_CREATE_QP_MAPPINGS_MAX
> -};
> -
> -struct ibv_create_qp {
> -	union nd_mapping mappings[MLX4_IB_CREATE_QP_MAPPINGS_MAX];
> -	u8	log_sq_bb_count;
> -	u8	log_sq_stride;
> -	u8	sq_no_prefetch;
> -	u8	reserved;
> -};
> -
> -struct ibv_create_qp_resp {
> -	struct nd_mapping_result mapping_results[MLX4_IB_CREATE_QP_MAPPINGS_MAX];
> -	// struct ib_uverbs_create_qp_resp
> -	u64 qp_handle;
> -	u32 qpn;
> -	u32 max_send_wr;
> -	u32 max_recv_wr;
> -	u32 max_send_sge;
> -	u32 max_recv_sge;
> -	u32 max_inline_data;
> -};
> -
> -enum ibv_qp_attr_mask {
> -	IBV_QP_STATE			= 1 << 0,
> -	IBV_QP_CUR_STATE		= 1 << 1,
> -	IBV_QP_EN_SQD_ASYNC_NOTIFY	= 1 << 2,
> -	IBV_QP_ACCESS_FLAGS		= 1 << 3,
> -	IBV_QP_PKEY_INDEX		= 1 << 4,
> -	IBV_QP_PORT			= 1 << 5,
> -	IBV_QP_QKEY			= 1 << 6,
> -	IBV_QP_AV			= 1 << 7,
> -	IBV_QP_PATH_MTU			= 1 << 8,
> -	IBV_QP_TIMEOUT			= 1 << 9,
> -	IBV_QP_RETRY_CNT		= 1 << 10,
> -	IBV_QP_RNR_RETRY		= 1 << 11,
> -	IBV_QP_RQ_PSN			= 1 << 12,
> -	IBV_QP_MAX_QP_RD_ATOMIC		= 1 << 13,
> -	IBV_QP_ALT_PATH			= 1 << 14,
> -	IBV_QP_MIN_RNR_TIMER		= 1 << 15,
> -	IBV_QP_SQ_PSN			= 1 << 16,
> -	IBV_QP_MAX_DEST_RD_ATOMIC	= 1 << 17,
> -	IBV_QP_PATH_MIG_STATE		= 1 << 18,
> -	IBV_QP_CAP			= 1 << 19,
> -	IBV_QP_DEST_QPN			= 1 << 20
> -};
> -
> -enum ibv_qp_state {
> -	IBV_QPS_RESET,
> -	IBV_QPS_INIT,
> -	IBV_QPS_RTR,
> -	IBV_QPS_RTS,
> -	IBV_QPS_SQD,
> -	IBV_QPS_SQE,
> -	IBV_QPS_ERR
> -};
> -
> -
> -struct ibv_modify_qp_resp {
> -	enum ibv_qp_attr_mask attr_mask;
> -	u8 qp_state;
> -	u8 reserved[3];
> -};
> -
> -struct ibv_create_ah_resp {
> -	u64 start;
> -};
> -
> -/*
> - * Some mlx4 specific kernel definitions. Perhaps could be in
> - * separate file.
> - */
> -
> -struct mlx4_ib_user_db_page {
> -	struct list_head        list;
> -	struct ib_umem         *umem;
> -	unsigned long           user_virt;
> -	int                     refcnt;
> -};
> -
> -
> -#endif /* MX_ABI_H */
> diff --git a/drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142/provider.c b/drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142/provider.c
> deleted file mode 100644
> index 7115cf769fe0..000000000000
> --- a/drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142/provider.c
> +++ /dev/null
> @@ -1,2961 +0,0 @@
> -/*
> - * Copyright (c) 2014, Microsoft Corporation.
> - *
> - * Author:
> - *   K. Y. Srinivasan <kys@microsoft.com>
> - *
> - * This program is free software; you can redistribute it and/or modify it
> - * under the terms of the GNU General Public License version 2 as published
> - * by the Free Software Foundation.
> - *
> - * This program is distributed in the hope that it will be useful, but
> - * WITHOUT ANY WARRANTY; without even the implied warranty of
> - * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
> - * NON INFRINGEMENT.  See the GNU General Public License for more
> - * details.
> - *
> - * Bug fixes/enhancements: Long Li <longli@microsoft.com>
> - */
> -
> -#include <linux/module.h>
> -#include <linux/moduleparam.h>
> -#include <linux/device.h>
> -#include <linux/netdevice.h>
> -#include <linux/etherdevice.h>
> -#include <linux/delay.h>
> -#include <linux/errno.h>
> -#include <linux/list.h>
> -#include <linux/spinlock.h>
> -#include <linux/ethtool.h>
> -#include <linux/rtnetlink.h>
> -#include <linux/inetdevice.h>
> -#include <linux/io.h>
> -#include <linux/hyperv.h>
> -#include <linux/completion.h>
> -#include <rdma/iw_cm.h>
> -#include <rdma/ib_verbs.h>
> -#include <rdma/ib_smi.h>
> -#include <rdma/ib_umem.h>
> -#include <rdma/ib_user_verbs.h>
> -#include <rdma/rdma_cm.h>
> -#include <linux/proc_fs.h>
> -#include <linux/seq_file.h>
> -#include "vmbus_rdma.h"
> -
> -/*
> - * We are emulating mlx4. XXXKYS: May have to FIX.
> - */
> -#include "./user.h"
> -
> -static struct hvnd_dev *g_nd_dev; // the one and only one
> -
> -int hvnd_log_level = HVND_ERROR;
> -module_param(hvnd_log_level, int, 0644);
> -MODULE_PARM_DESC(hvnd_log_level,
> -	"Logging level, 0 - Error (default), 1 - Warning, 2 - Info, 3 - Debug.");
> -
> -static int disable_cq_notify = 1;
> -//static int disable_cq_notify = 0;
> -module_param(disable_cq_notify, int, 0644);
> -MODULE_PARM_DESC(disable_cq_notify,
> -	"Disable CQ notification, 0 - Enable, 1 - Disable (default).");
> -
> -enum {
> -	MLX4_USER_DEV_CAP_64B_CQE = 1L << 0
> -};
> -
> -#define HVND_NODE_DESC "vmbus-RDMA"
> -
> -#undef MLX4_IB_UVERBS_ABI_VERSION
> -#define MLX4_IB_UVERBS_ABI_VERSION             4
> -
> -struct mlx4_wqe_data_seg {
> -	__be32                  byte_count;
> -	__be32                  lkey;
> -	__be64                  addr;
> -};
> -
> -/* return value:
> - * true: ep is running
> - * false: ep is stopped
> - */
> -bool ep_add_work_pending(struct hvnd_ep_obj *ep_object)
> -{
> -	bool ret = true;
> -
> -	atomic_inc(&ep_object->nr_requests_pending);
> -	if (ep_object->stopping) {
> -		if (atomic_dec_and_test(&ep_object->nr_requests_pending))
> -			wake_up(&ep_object->wait_pending);
> -		ret = false;
> -	}
> -	return ret;
> -}
> -
> -void ep_del_work_pending(struct hvnd_ep_obj *ep_object)
> -{
> -	if (atomic_dec_and_test(&ep_object->nr_requests_pending))
> -		wake_up(&ep_object->wait_pending);
> -
> -	if (atomic_read(&ep_object->nr_requests_pending) < 0) {
> -		hvnd_error("ep_object->nr_requests_pending=%d type=%d cm_state=%d\n",
> -			   atomic_read(&ep_object->nr_requests_pending),
> -			   ep_object->type, ep_object->cm_state);
> -		dump_stack();
> -	}
> -}
> -
> -void ep_stop(struct hvnd_ep_obj *ep_object)
> -{
> -	if (!ep_object->stopping) {
> -		ep_object->stopping = true;
> -		hvnd_cancel_io(ep_object);
> -	}
> -
> -	if (atomic_read(&ep_object->nr_requests_pending) < 0) {
> -		hvnd_error("IO canceled, ep_object->nr_requests_pending=%d type=%d cm_state=%d\n",
> -			   atomic_read(&ep_object->nr_requests_pending),
> -			   ep_object->type, ep_object->cm_state);
> -		dump_stack();
> -	}
> -
> -	wait_event(ep_object->wait_pending,
> -		   !atomic_read(&ep_object->nr_requests_pending));
> -}
> -
> -static int vmbus_dma_map_sg(struct device *dev, struct scatterlist *sgl,
> -		int nents, enum dma_data_direction direction,
> -		unsigned long attrs)
> -{
> -	struct scatterlist *sg;
> -	u64 addr;
> -	int i;
> -	int ret = nents;
> -
> -	BUG_ON(!valid_dma_direction(direction));
> -
> -	for_each_sg(sgl, sg, nents, i) {
> -		addr = (u64) page_address(sg_page(sg));
> -		/* TODO: handle highmem pages */
> -		if (!addr) {
> -			ret = 0;
> -			break;
> -		}
> -		sg->dma_address = addr + sg->offset;
> -		sg->dma_length = sg->length;
> -	}
> -	return ret;
> -}
> -
> -static void vmbus_dma_unmap_sg(struct device *dev,
> -			 struct scatterlist *sg, int nents,
> -			 enum dma_data_direction direction, unsigned long attrs)
> -{
> -	BUG_ON(!valid_dma_direction(direction));
> -}
> -
> -
> -const struct dma_map_ops vmbus_dma_ops = {
> -	.map_sg = vmbus_dma_map_sg,
> -	.unmap_sg = vmbus_dma_unmap_sg,
> -};
> -
> -static int hvnd_get_incoming_connections(struct hvnd_ep_obj *listener,
> -					 struct hvnd_dev *nd_dev,
> -					 struct hvnd_ucontext *uctx);
> -
> -static struct hvnd_ep_obj *hvnd_setup_ep(struct iw_cm_id *cm_id, int ep_type,
> -					struct hvnd_dev *nd_dev,
> -					struct hvnd_ucontext *uctx);
> -
> -static void hvnd_deinit_ep(struct hvnd_ep_obj *ep)
> -{
> -	put_irp_handle(ep->nd_dev, ep->local_irp);
> -}
> -
> -static void hvnd_destroy_ep(struct hvnd_ep_obj *ep)
> -{
> -	hvnd_debug("canceling work for ep %p\n", ep);
> -	cancel_work_sync(&ep->wrk.work);
> -	hvnd_deinit_ep(ep);
> -	kfree(ep);
> -}
> -
> -
> -#define	UC(b)	(((int)b)&0xff)
> -char *debug_inet_ntoa(struct in_addr in, char *b)
> -{
> -	register char *p;
> -
> -	p = (char *)&in;
> -	(void)snprintf(b, 20,
> -	    "%d.%d.%d.%d", UC(p[0]), UC(p[1]), UC(p[2]), UC(p[3]));
> -	return b;
> -}
> -
> -void hvnd_process_events(struct work_struct *work);
> -
> -static int hvnd_init_ep(struct hvnd_ep_obj *ep_object,
> -			 struct iw_cm_id *cm_id, int ep_type,
> -			 struct hvnd_dev *nd_dev,
> -			 struct hvnd_ucontext *uctx)
> -{
> -	int ret;
> -
> -	ep_object->type = ep_type;
> -	ep_object->cm_id = cm_id;
> -	ep_object->nd_dev = nd_dev;
> -	ep_object->uctx = uctx;
> -
> -	ep_object->parent = NULL;
> -
> -	ep_object->wrk.callback_arg = ep_object;
> -	INIT_WORK(&ep_object->wrk.work, hvnd_process_events);
> -	INIT_LIST_HEAD(&ep_object->incoming_pkt_list);
> -	spin_lock_init(&ep_object->incoming_pkt_list_lock);
> -
> -	ep_object->stopping = false;
> -	atomic_set(&ep_object->nr_requests_pending, 0);
> -	init_waitqueue_head(&ep_object->wait_pending);
> -
> -	ret = get_irp_handle(nd_dev, &ep_object->local_irp, (void *)ep_object);
> -
> -	if (ret) {
> -		hvnd_error("get_irp_handle() failed: err: %d\n", ret);
> -		return ret;
> -	}
> -	return 0;
> -
> -}
> -
> -static int set_rq_size(struct hvnd_dev *dev, struct ib_qp_cap *cap,
> -			struct hvnd_qp *qp)
> -{
> -
> -	/* HW requires >= 1 RQ entry with >= 1 gather entry */
> -	if (!cap->max_recv_wr || !cap->max_recv_sge)
> -		return -EINVAL;
> -
> -	qp->rq_wqe_cnt   = roundup_pow_of_two(max(1U, cap->max_recv_wr));
> -	qp->rq_max_gs    = roundup_pow_of_two(max(1U, cap->max_recv_sge));
> -	qp->rq_wqe_shift = ilog2(
> -		qp->rq_max_gs * sizeof(struct mlx4_wqe_data_seg));
> -
> -
> -	return 0;
> -}
> -
> -static int set_user_sq_size(struct hvnd_dev *dev,
> -			    struct hvnd_qp *qp,
> -			    struct mlx4_ib_create_qp *ucmd)
> -{
> -	qp->sq_wqe_cnt   = 1 << ucmd->log_sq_bb_count;
> -	qp->sq_wqe_shift = ucmd->log_sq_stride;
> -
> -	qp->buf_size = (qp->rq_wqe_cnt << qp->rq_wqe_shift) +
> -			(qp->sq_wqe_cnt << qp->sq_wqe_shift);
> -
> -	return 0;
> -}
> -
> -static int hvnd_db_map_user(struct hvnd_ucontext *uctx, unsigned long virt,
> -				struct ib_umem **db_umem)
> -{
> -	struct mlx4_ib_user_db_page *page;
> -	int err = 0;
> -
> -	mutex_lock(&uctx->db_page_mutex);
> -
> -	list_for_each_entry(page, &uctx->db_page_list, list)
> -		if (page->user_virt == (virt & PAGE_MASK))
> -			goto found;
> -
> -	page = kmalloc(sizeof(*page), GFP_KERNEL);
> -	if (!page) {
> -		err = -ENOMEM;
> -		goto out;
> -	}
> -
> -	page->user_virt = (virt & PAGE_MASK);
> -	page->refcnt    = 0;
> -	page->umem      = ib_umem_get(&uctx->ibucontext, virt & PAGE_MASK,
> -				      PAGE_SIZE, 0, 0);
> -	if (IS_ERR(page->umem)) {
> -		hvnd_error("ib_umem_get failure\n");
> -		err = PTR_ERR(page->umem);
> -		kfree(page);
> -		goto out;
> -	}
> -
> -	list_add(&page->list, &uctx->db_page_list);
> -
> -found:
> -	++page->refcnt;
> -out:
> -	mutex_unlock(&uctx->db_page_mutex);
> -	if (!err)
> -		*db_umem = page->umem;
> -
> -	return err;
> -}
> -
> -static void hvnd_db_unmap_user(struct hvnd_ucontext *uctx, u64 db_addr)
> -{
> -	struct mlx4_ib_user_db_page *page;
> -
> -	mutex_lock(&uctx->db_page_mutex);
> -	list_for_each_entry(page, &uctx->db_page_list, list)
> -		if (page->user_virt == (db_addr & PAGE_MASK))
> -			goto found;
> -
> -found:
> -	if (!--page->refcnt) {
> -		list_del(&page->list);
> -		ib_umem_release(page->umem);
> -		kfree(page);
> -	}
> -
> -	mutex_unlock(&uctx->db_page_mutex);
> -}
> -
> -
> -static void debug_check(const char *func, int line)
> -{
> -	hvnd_debug("func is: %s; line is %d\n", func, line);
> -
> -	if (in_interrupt()) {
> -		hvnd_error("In interrupt func is: %s; line is %d\n",
> -			   func, line);
> -		return;
> -	}
> -}
> -
> -static struct ib_ah *hvnd_ah_create(struct ib_pd *pd,
> -				    struct ib_ah_attr *ah_attr,
> -				    struct ib_udata *udata)
> -{
> -	debug_check(__func__, __LINE__);
> -	return ERR_PTR(-ENOSYS);
> -}
> -
> -static int hvnd_ah_destroy(struct ib_ah *ah)
> -{
> -	debug_check(__func__, __LINE__);
> -	return -ENOSYS;
> -}
> -
> -static int hvnd_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
> -{
> -	debug_check(__func__, __LINE__);
> -	return -ENOSYS;
> -}
> -
> -static int hvnd_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
> -{
> -	debug_check(__func__, __LINE__);
> -	return -ENOSYS;
> -}
> -
> -static int hvnd_process_mad(struct ib_device *ibdev,
> -			    int mad_flags,
> -			    u8 port_num,
> -			    const struct ib_wc *in_wc,
> -			    const struct ib_grh *in_grh,
> -			    const struct ib_mad_hdr *in_mad,
> -			    size_t in_mad_size,
> -			    struct ib_mad_hdr *out_mad,
> -			    size_t *out_mad_size,
> -			    u16 *out_mad_pkey_index)
> -{
> -	debug_check(__func__, __LINE__);
> -	return -ENOSYS;
> -}
> -
> -void hvnd_acquire_uctx_ref(struct hvnd_ucontext *uctx)
> -{
> -	atomic_inc(&uctx->refcnt);
> -}
> -
> -void hvnd_drop_uctx_ref(struct hvnd_dev *nd_dev,
> -			struct hvnd_ucontext *uctx)
> -{
> -	if (atomic_dec_and_test(&uctx->refcnt)) {
> -		hvnd_debug("uctx ref cnt dropped it is %d\n",
> -			   atomic_read(&uctx->refcnt));
> -		hvnd_debug("About to close adaptor\n");
> -		hvnd_close_adaptor(nd_dev, uctx);
> -	} else
> -		hvnd_debug("uctx ref cnt dropped it is %d\n",
> -			   atomic_read(&uctx->refcnt));
> -}
> -
> -
> -static int hvnd_dealloc_ucontext(struct ib_ucontext *context)
> -{
> -	struct hvnd_dev *nd_dev;
> -	struct hvnd_ucontext *uctx;
> -
> -	uctx = to_nd_context(context);
> -	nd_dev = to_nd_dev(context->device);
> -
> -	hvnd_debug("calling %s\n", __func__);
> -
> -	hvnd_drop_uctx_ref(nd_dev, uctx);
> -
> -	return 0;
> -}
> -
> -static struct ib_ucontext *hvnd_alloc_ucontext(struct ib_device *ibdev,
> -					       struct ib_udata *udata)
> -{
> -	struct hvnd_dev *nd_dev = to_nd_dev(ibdev);
> -	struct hvnd_ucontext *uctx;
> -	struct mlx4_ib_alloc_ucontext_resp resp;
> -	struct ibv_get_context_resp *ctx_output;
> -	int ret;
> -
> -	if (!nd_dev->ib_active) {
> -		hvnd_error("ib device is not active, try again\n");
> -		return ERR_PTR(-EAGAIN);
> -	}
> -
> -	uctx = get_uctx(nd_dev, current_pid());
> -	if (uctx) {
> -		// it is already opened, just increase its reference count
> -		hvnd_acquire_uctx_ref(uctx);
> -	} else {
> -
> -		/*
> -		 * The Windows host expects the following to be done:
> -		 * 1. Successfully send struct ndv_pkt_hdr_create_1
> -		 * 2. INIT PROVIDER
> -		 * 3. Open Adapter
> -		 * Before we can complete this call.
> -		 */
> -
> -		uctx = kzalloc(sizeof(struct hvnd_ucontext), GFP_KERNEL);
> -		if (!uctx)
> -			return ERR_PTR(-ENOMEM);
> -
> -		atomic_set(&uctx->refcnt, 1);
> -		INIT_LIST_HEAD(&uctx->db_page_list);
> -		mutex_init(&uctx->db_page_mutex);
> -
> -		/*
> -		 * Stash away the context with the calling PID.
> -		 */
> -		ret = insert_handle(nd_dev, &nd_dev->uctxidr, uctx,
> -				    current_pid());
> -		if (ret) {
> -			hvnd_error("Uctx ID insertion failed; ret is %d\n",
> -				   ret);
> -			goto err1;
> -		}
> -
> -		hvnd_debug("Opening adaptor pid is %d\n", current_pid());
> -
> -		ret = hvnd_open_adaptor(nd_dev, uctx);
> -		if (ret) {
> -			hvnd_error("hvnd_open_adaptor failed ret=%d\n", ret);
> -			goto err1;
> -		}
> -
> -	}
> -
> -	/*
> -	 * Copy the response out.
> -	 */
> -	ctx_output = &uctx->o_adap_pkt.mappings.ctx_output;
> -	resp.dev_caps         =	MLX4_USER_DEV_CAP_64B_CQE;
> -	resp.qp_tab_size      = ctx_output->qp_tab_size;
> -	resp.bf_reg_size      = ctx_output->bf_reg_size;
> -	resp.bf_regs_per_page =	ctx_output->bf_regs_per_page;
> -	resp.cqe_size         =	ctx_output->cqe_size;
> -
> -	ret = ib_copy_to_udata(udata, &resp, sizeof(resp));
> -	if (ret) {
> -		hvnd_error("ib_copy_to_udata failed ret=%d\n", ret);
> -		goto err1;
> -	}
> -
> -	return &uctx->ibucontext;
> -
> -err1:
> -	kfree(uctx);
> -	return ERR_PTR(ret);
> -}
> -
> -static int hvnd_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
> -{
> -	struct hvnd_ucontext *uctx = to_nd_context(context);
> -
> -	if (vma->vm_end - vma->vm_start != PAGE_SIZE) {
> -		hvnd_error("vma not a page size, actual size=%lu\n",
> -			   vma->vm_end - vma->vm_start);
> -		return -EINVAL;
> -	}
> -
> -	if (vma->vm_pgoff == 0) {
> -		vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
> -
> -		if (io_remap_pfn_range(vma, vma->vm_start,
> -					(uctx->uar_base >> PAGE_SHIFT),
> -					PAGE_SIZE, vma->vm_page_prot)) {
> -			hvnd_error("io_remap_pfn_range failure\n");
> -			return -EAGAIN;
> -		}
> -	} else if (vma->vm_pgoff == 1 && uctx->bf_buf_size != 0) {
> -		vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
> -
> -		if (io_remap_pfn_range(vma, vma->vm_start,
> -					(uctx->uar_base >> PAGE_SHIFT) + 1,
> -					PAGE_SIZE, vma->vm_page_prot)) {
> -			hvnd_error("io_remap_pfn_range failure\n");
> -			return -EAGAIN;
> -		}
> -	} else {
> -		hvnd_error("check code\n");
> -		return -EINVAL;
> -	}
> -
> -	return 0;
> -}
> -
> -static int hvnd_deallocate_pd(struct ib_pd *pd)
> -{
> -
> -	struct hvnd_ucontext *uctx;
> -	struct hvnd_dev *nd_dev;
> -	struct hvnd_ib_pd *hvnd_pd;
> -	struct ib_ucontext *ibuctx = pd->uobject->context;
> -
> -	hvnd_pd = to_nd_pd(pd);
> -	nd_dev = to_nd_dev(pd->device);
> -	uctx = to_nd_context(ibuctx);
> -
> -	hvnd_free_handle(nd_dev, uctx, hvnd_pd->handle,
> -			 IOCTL_ND_PD_FREE);
> -
> -	hvnd_drop_uctx_ref(nd_dev, uctx);
> -	return 0;
> -}
> -
> -static struct ib_pd *hvnd_allocate_pd(struct ib_device *ibdev,
> -				      struct ib_ucontext *context,
> -				      struct ib_udata *udata)
> -{
> -	struct hvnd_ucontext *uctx;
> -	struct hvnd_dev *nd_dev;
> -	int ret;
> -	struct hvnd_ib_pd *hvnd_pd;
> -
> -	if (!context) {
> -		hvnd_error("kernel mode context not supported\n");
> -		return ERR_PTR(-EINVAL);
> -	}
> -
> -	hvnd_pd = kzalloc(sizeof(struct hvnd_ib_pd), GFP_KERNEL);
> -
> -	if (!hvnd_pd)
> -		return ERR_PTR(-ENOMEM);
> -
> -	uctx = to_nd_context(context);
> -	nd_dev = to_nd_dev(ibdev);
> -
> -	ret = hvnd_create_pd(uctx, nd_dev, hvnd_pd);
> -	if (ret) {
> -		hvnd_error("hvnd_create_pd failure ret=%d\n", ret);
> -		goto error_cr_pd;
> -	}
> -
> -	if (context) {
> -		if (ib_copy_to_udata(udata, &hvnd_pd->pdn, sizeof(__u32))) {
> -			hvnd_error("ib_copy_to_udata failure\n");
> -			ret = -EFAULT;
> -			goto error_fault;
> -		}
> -	}
> -
> -	hvnd_acquire_uctx_ref(uctx);
> -	return &hvnd_pd->ibpd;
> -
> -error_fault:
> -	hvnd_free_handle(nd_dev, uctx, hvnd_pd->handle,
> -			 IOCTL_ND_PD_FREE);
> -
> -error_cr_pd:
> -	kfree(hvnd_pd);
> -	return ERR_PTR(ret);
> -}
> -
> -static int hvnd_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
> -			   u16 *pkey)
> -{
> -	debug_check(__func__, __LINE__);
> -	*pkey = 0;
> -	return 0;
> -}
> -
> -static int hvnd_query_gid(struct ib_device *ibdev, u8 port, int index,
> -			  union ib_gid *gid)
> -{
> -	int ret;
> -	struct hvnd_dev *nd_dev = to_nd_dev(ibdev);
> -
> -	debug_check(__func__, __LINE__);
> -
> -	ret = wait_for_completion_timeout(&nd_dev->addr_set, 60*HZ);
> -	if (!ret)
> -		return -ETIMEDOUT;
> -
> -	memset(&(gid->raw[0]), 0, sizeof(gid->raw));
> -	memcpy(&(gid->raw[0]), nd_dev->mac_addr, 6);
> -	return 0;
> -}
> -
> -static int hvnd_query_device(struct ib_device *ibdev,
> -			     struct ib_device_attr *props,
> -			     struct ib_udata *udata)
> -{
> -	struct hvnd_dev *nd_dev = to_nd_dev(ibdev);
> -	struct adapter_info_v2 *adap_info;
> -
> -	if (!nd_dev->query_pkt_set) {
> -		hvnd_error("query packet not received yet\n");
> -		return 0;
> -	}
> -
> -	adap_info = &nd_dev->query_pkt.ioctl.ad_info;
> -
> -	memset(props, 0, sizeof(*props));
> -
> -	/*
> -	 * Copy the relevant properties out.
> -	 */
> -	props->fw_ver = 0;
> -	props->device_cap_flags    = 0;
> -	//props->device_cap_flags |= IB_DEVICE_BAD_PKEY_CNTR;
> -	//props->device_cap_flags |= IB_DEVICE_BAD_QKEY_CNTR;
> -	//props->device_cap_flags |= IB_DEVICE_XRC;
> -
> -	props->vendor_id           =  0x15b3;
> -	props->vendor_part_id      = adap_info->device_id;
> -
> -	props->max_mr_size         = ~0ull;
> -	props->page_size_cap       = PAGE_SIZE;
> -	props->max_qp              = 16384;
> -	props->max_qp_wr           = min(adap_info->max_recv_q_depth,
> -					 adap_info->max_initiator_q_depth);
> -
> -	props->max_sge             = min(adap_info->max_initiator_sge,
> -					 adap_info->max_recv_sge);
> -	props->max_cq              = 0x1FFFF;
> -	props->max_cqe             = adap_info->max_completion_q_depth;
> -	props->max_mr              = 16384;
> -	props->max_pd              = 16384;
> -
> -	props->max_qp_rd_atom      = adap_info->max_inbound_read_limit;
> -	props->max_qp_init_rd_atom = adap_info->max_outbound_read_limit;
> -	props->max_res_rd_atom     = props->max_qp_rd_atom * props->max_qp;
> -	props->max_srq             = 16384;
> -	props->max_srq_wr          = adap_info->max_recv_q_depth;
> -	props->max_srq_sge         = adap_info->max_recv_sge;
> -
> -	return 0;
> -}
> -
> -static int hvnd_query_port(struct ib_device *ibdev, u8 port,
> -			   struct ib_port_attr *props)
> -{
> -	memset(props, 0, sizeof(struct ib_port_attr));
> -
> -	props->max_mtu = IB_MTU_4096;
> -	props->active_mtu = IB_MTU_4096;
> -
> -	/*
> -	 * KYS: TBD need to base this on netdev.
> -	 */
> -	props->state = IB_PORT_ACTIVE;
> -
> -	props->port_cap_flags = IB_PORT_CM_SUP;
> -
> -	props->gid_tbl_len = 1;
> -	props->pkey_tbl_len = 1;
> -	props->active_width = 1;
> -	props->active_speed = IB_SPEED_DDR; //KYS: check
> -	props->max_msg_sz = -1;
> -
> -	return 0;
> -}
> -
> -static enum rdma_link_layer
> -hvnd_get_link_layer(struct ib_device *device, u8 port)
> -{
> -	return IB_LINK_LAYER_ETHERNET;
> -}
> -
> -static ssize_t hvnd_show_rev(struct device *dev, struct device_attribute *attr,
> -			char *buf)
> -{
> -	return 0;
> -}
> -
> -static ssize_t hvnd_show_fw_ver(struct device *dev,
> -				struct device_attribute *attr, char *buf)
> -{
> -	return 0;
> -}
> -
> -static ssize_t hvnd_show_hca(struct device *dev, struct device_attribute *attr,
> -			char *buf)
> -{
> -	return 0;
> -}
> -
> -static ssize_t hvnd_show_board(struct device *dev,
> -			       struct device_attribute *attr, char *buf)
> -{
> -	return 0;
> -}
> -
> -static int hvnd_get_port_immutable(struct ib_device *ibdev, u8 port_num,
> -				   struct ib_port_immutable *immutable)
> -{
> -	struct ib_port_attr attr;
> -	int err;
> -
> -	err = hvnd_query_port(ibdev, port_num, &attr);
> -	if (err)
> -		return err;
> -
> -	immutable->pkey_tbl_len = attr.pkey_tbl_len;
> -	immutable->gid_tbl_len = attr.gid_tbl_len;
> -	immutable->core_cap_flags = RDMA_CORE_PORT_IWARP;
> -
> -	return 0;
> -}
> -
> -static struct ib_qp *hvnd_ib_create_qp(struct ib_pd *pd,
> -				       struct ib_qp_init_attr *attrs,
> -				       struct ib_udata *udata)
> -{
> -	struct hvnd_ucontext *uctx;
> -	struct hvnd_dev *nd_dev;
> -	struct mlx4_ib_create_qp ucmd;
> -	struct hvnd_qp *qp;
> -	int ret = 0;
> -	struct hvnd_ib_pd *hvnd_pd = to_nd_pd(pd);
> -	struct hvnd_cq *send_cq = to_nd_cq(attrs->send_cq);
> -	struct hvnd_cq *recv_cq = to_nd_cq(attrs->recv_cq);
> -
> -	uctx = get_uctx_from_pd(pd);
> -	nd_dev = to_nd_dev(pd->device);
> -
> -	if (attrs->qp_type != IB_QPT_RC) {
> -		hvnd_error("attrs->qp_type=%d not IB_QPT_RC\n", attrs->qp_type);
> -		return ERR_PTR(-EINVAL);
> -	}
> -
> -	qp = kzalloc(sizeof(*qp), GFP_KERNEL);
> -	if (!qp) {
> -		ret = -ENOMEM;
> -		goto err_done;
> -	}
> -
> -	qp->uctx = uctx;
> -
> -	if (ib_copy_from_udata(&ucmd, udata, sizeof(ucmd))) {
> -		hvnd_error("ib_copy_from_udata failed\n");
> -		ret = -EFAULT;
> -		goto err_ucpy;
> -	}
> -
> -	qp->qp_buf = (void *)ucmd.buf_addr;
> -	qp->db_addr = (void *)ucmd.db_addr;
> -	qp->log_sq_bb_count = ucmd.log_sq_bb_count;
> -	qp->log_sq_stride = ucmd.log_sq_stride;
> -	qp->sq_no_prefetch = ucmd.sq_no_prefetch;
> -	qp->port = attrs->port_num;
> -
> -	init_waitqueue_head(&qp->wait);
> -	atomic_set(&qp->refcnt, 1);
> -
> -	qp->recv_cq = recv_cq;
> -	qp->send_cq = send_cq;
> -	qp->nd_dev = nd_dev;
> -
> -	qp->receive_cq_handle = recv_cq->cq_handle;
> -	qp->initiator_cq_handle = send_cq->cq_handle;
> -	qp->pd_handle = hvnd_pd->handle;
> -	qp->cq_notify = false;
> -
> -	qp->ibqp.qp_num = attrs->qp_type == IB_QPT_SMI ? 0 : 1;
> -
> -	qp->max_inline_data = attrs->cap.max_inline_data;
> -
> -	qp->initiator_q_depth = attrs->cap.max_send_wr;
> -	qp->initiator_request_sge = attrs->cap.max_send_sge;
> -
> -
> -	qp->receive_q_depth = attrs->cap.max_recv_wr;
> -	qp->receive_request_sge = attrs->cap.max_recv_sge;
> -
> -	set_rq_size(nd_dev, &attrs->cap, qp);
> -
> -	set_user_sq_size(nd_dev, qp, &ucmd);
> -
> -	qp->umem = ib_umem_get(&uctx->ibucontext, ucmd.buf_addr,
> -				qp->buf_size, 0, 0);
> -	if (IS_ERR(qp->umem)) {
> -		ret = PTR_ERR(qp->umem);
> -		hvnd_error("ib_umem_get failed ret=%d\n", ret);
> -		goto err_ucpy;
> -	}
> -
> -	ret =  hvnd_db_map_user(uctx, ucmd.db_addr, &qp->db_umem);
> -
> -	if (ret) {
> -		hvnd_error("hvnd_db_map_user failed ret=%d\n", ret);
> -		goto err_db_map;
> -	}
> -
> -	ret = hvnd_create_qp(nd_dev, uctx, qp);
> -
> -	if (ret) {
> -		hvnd_error("hvnd_create_qp failed ret=%d\n", ret);
> -		goto err_qp;
> -	}
> -
> -	hvnd_acquire_uctx_ref(uctx);
> -
> -	qp->ibqp.qp_num = qp->qpn;
> -	qp->ibqp.qp_type = IB_QPT_RC;
> -
> -
> -	return &qp->ibqp;
> -
> -err_qp:
> -	hvnd_db_unmap_user(uctx, ucmd.db_addr);
> -
> -err_db_map:
> -	ib_umem_release(qp->umem);
> -
> -err_ucpy:
> -	kfree(qp);
> -err_done:
> -	return ERR_PTR(ret);
> -}
> -
> -static int hvnd_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
> -			     int attr_mask, struct ib_udata *udata)
> -{
> -	struct hvnd_qp *qp = to_nd_qp(ibqp);
> -	struct hvnd_dev *nd_dev = to_nd_dev(ibqp->device);
> -	enum ib_qp_state cur_state, new_state;
> -	int ret = 0;
> -
> -	if (attr != NULL) {
> -		cur_state = (attr_mask & IB_QP_CUR_STATE)
> -			? attr->cur_qp_state : qp->qp_state;
> -		new_state = (attr_mask & IB_QP_STATE)
> -			? attr->qp_state : cur_state;
> -
> -		hvnd_debug("qp->qp_state is %d new state is %d\n",
> -			   qp->qp_state, new_state);
> -		hvnd_debug("current qp state is %d\n", cur_state);
> -		if (attr_mask & IB_QP_STATE) {
> -			/* Ensure the state is valid */
> -			if (attr->qp_state < 0 || attr->qp_state > IB_QPS_ERR) {
> -				hvnd_error("incorrect qp state attr->qp_state=%d\n",
> -					   attr->qp_state);
> -				return -EINVAL;
> -			}
> -
> -			if (qp->qp_state != new_state) {
> -				qp->qp_state = new_state;
> -				/*
> -				 * The only state transition supported is the
> -				 * transition to error state.
> -				 */
> -				switch (new_state) {
> -				case IB_QPS_ERR:
> -				case IB_QPS_SQD:
> -					ret = hvnd_flush_qp(nd_dev, qp->uctx,
> -							    qp);
> -
> -					if (ret)
> -						hvnd_error("hvnd_flush_qp failed ret=%d\n", ret);
> -
> -					// immediately notify the upper layer
> -					// on disconnection
> -					if (!ret && qp->connector)
> -						hvnd_process_notify_disconnect(
> -							qp->connector,
> -							STATUS_SUCCESS);
> -
> -					return ret;
> -
> -				default:
> -					break;
> -				}
> -			}
> -		}
> -	}
> -	return 0;
> -}
> -
> -
> -static int hvnd_ib_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
> -		     int attr_mask, struct ib_qp_init_attr *init_attr)
> -{
> -	struct hvnd_qp *qp = to_nd_qp(ibqp);
> -
> -	memset(attr, 0, sizeof(*attr));
> -	memset(init_attr, 0, sizeof(*init_attr));
> -
> -	attr->qp_state = qp->qp_state;
> -
> -	init_attr->cap.max_send_wr = qp->max_send_wr;
> -	init_attr->cap.max_recv_wr = qp->max_recv_wr;
> -
> -	init_attr->cap.max_send_sge = qp->max_send_sge;
> -	init_attr->cap.max_recv_sge = qp->max_recv_sge;
> -	init_attr->cap.max_inline_data = qp->max_inline_data;
> -
> -	init_attr->sq_sig_type = IB_SIGNAL_ALL_WR;
> -
> -	return 0;
> -}
> -
> -static void hvnd_refuse_connection(struct hvnd_ep_obj *connector, int status);
> -static int hvnd_destroy_qp(struct ib_qp *ib_qp)
> -{
> -	int ret;
> -	struct hvnd_qp *qp = to_nd_qp(ib_qp);
> -	struct hvnd_dev *nd_dev = to_nd_dev(ib_qp->device);
> -	u64 jiffies;
> -
> -	if (!qp->connector) {
> -		hvnd_warn("error: connector is NULL; skip destroying connector\n");
> -		goto free_qp;
> -	}
> -
> -	/*
> -	 * should we flush the qp first on ctrl-C?,
> -	 * no need to disconnect on abrupt shutdown?
> -	 */
> -	if (qp->qp_state != IB_QPS_ERR && qp->qp_state != IB_QPS_SQD) {
> -		hvnd_warn("qp_state=%d, doing abrupt disconnect\n",
> -			  qp->qp_state);
> -		hvnd_flush_qp(nd_dev, qp->uctx, qp);
> -
> -		ep_stop(qp->connector);
> -
> -		// now no pending activity is possible on the connector
> -
> -		switch (qp->connector->cm_state) {
> -
> -		case hvnd_cm_idle:
> -		case hvnd_cm_connect_reply_refused:
> -		case hvnd_cm_connect_request_sent:
> -		case hvnd_cm_close_sent:
> -			hvnd_warn("cm_state = %d not doing anything\n",
> -				  qp->connector->cm_state);
> -			break;
> -
> -		case hvnd_cm_connect_received:
> -			hvnd_warn("cm_state = %d refusing pending connection request\n",
> -				  qp->connector->cm_state);
> -			hvnd_refuse_connection(qp->connector, -ECONNREFUSED);
> -			break;
> -
> -		case hvnd_cm_connect_reply_sent:
> -		case hvnd_cm_established_sent:
> -		case hvnd_cm_accept_sent:
> -			hvnd_warn("cm_state = %d notifying disconnect on existing connection\n",
> -				  qp->connector->cm_state);
> -			hvnd_process_notify_disconnect(qp->connector,
> -						       STATUS_CANCELLED);
> -			break;
> -
> -		default:
> -			hvnd_error("unknown cm_state = %d\n",
> -				   qp->connector->cm_state);
> -
> -		}
> -		goto free_connector;
> -	} else {
> -		hvnd_debug("qp_state=%d, doing normal disconnect\n",
> -			   qp->qp_state);
> -	}
> -
> -	if (!ep_add_work_pending(qp->connector))
> -		goto free_connector;
> -
> -	init_completion(&qp->connector->disconnect_event);
> -
> -	/*
> -	 * First issue a disconnect on the connector.
> -	 */
> -
> -	hvnd_debug("calling hvnd_connector_disconnect\n");
> -	ret = hvnd_connector_disconnect(nd_dev, qp->uctx,
> -					qp->connector->ep_handle,
> -					qp->connector);
> -	if (ret) {
> -		ep_del_work_pending(qp->connector);
> -		hvnd_error("disconnect: retval is %d\n", ret);
> -		ep_stop(qp->connector);
> -		goto free_connector;
> -	}
> -	/*
> -	 * Now wait for the disconnect.
> -	 */
> -	jiffies = get_jiffies_64();
> -	wait_for_completion(&qp->connector->disconnect_event);
> -	hvnd_debug("Completed disconnect connector=%p jiffies=%llu\n",
> -		   qp->connector, get_jiffies_64() - jiffies);
> -
> -	/*
> -	 * Now free up the connector and drop the reference on uctx.
> -	 */
> -
> -	ep_stop(qp->connector);
> -
> -free_connector:
> -	hvnd_debug("destroying connector handle: %p\n",
> -		   (void *) qp->connector->ep_handle);
> -	hvnd_free_handle(nd_dev, qp->uctx,
> -			 qp->connector->ep_handle,
> -			 IOCTL_ND_CONNECTOR_FREE);
> -
> -	hvnd_drop_uctx_ref(nd_dev, qp->uctx);
> -	hvnd_destroy_ep(qp->connector);
> -	qp->connector = NULL;
> -free_qp:
> -	atomic_dec(&qp->refcnt);
> -	hvnd_debug("Waiting for the ref cnt to go to 0\n");
> -
> -	wait_event(qp->wait, !atomic_read(&qp->refcnt));
> -
> -	hvnd_debug("About to destroy qp\n");
> -	hvnd_db_unmap_user(qp->uctx, (u64)qp->db_addr);
> -	ib_umem_release(qp->umem);
> -
> -	hvnd_debug("About to free qp\n");
> -	ret = hvnd_free_qp(nd_dev, qp->uctx, qp);
> -
> -	if (ret == 0) {
> -		hvnd_drop_uctx_ref(nd_dev, qp->uctx);
> -		kfree(qp);
> -	} else {
> -		hvnd_error("free qp failed: ret is %d\n", ret);
> -	}
> -
> -	return ret;
> -}
> -
> -static struct ib_cq *hvnd_ib_create_cq(struct ib_device *ibdev,
> -				       const struct ib_cq_init_attr *attr,
> -				       struct ib_ucontext *ib_context,
> -				       struct ib_udata *udata)
> -{
> -	struct hvnd_ucontext *uctx;
> -	struct hvnd_dev *nd_dev;
> -	struct mlx4_ib_create_cq ucmd;
> -	struct hvnd_cq *cq;
> -	int ret = 0;
> -	int entries = attr->cqe;
> -
> -	uctx = to_nd_context(ib_context);
> -	nd_dev = to_nd_dev(ibdev);
> -
> -	if (entries < 1 || entries > uctx->max_cqe) {
> -		hvnd_error("incorrct entries=%d\n", entries);
> -		ret = -EINVAL;
> -		goto err_done;
> -	}
> -
> -	cq = kzalloc(sizeof(*cq), GFP_KERNEL);
> -	if (!cq) {
> -		ret = -ENOMEM;
> -		goto err_done;
> -	}
> -
> -	entries      = roundup_pow_of_two(entries + 1);
> -	cq->ibcq.cqe = entries - 1;
> -	cq->entries = entries;
> -	cq->uctx = uctx;
> -
> -	if (ib_copy_from_udata(&ucmd, udata, sizeof(ucmd))) {
> -		hvnd_error("ib_copy_from_udata failed\n");
> -		ret = -EFAULT;
> -		goto err_ucpy;
> -	}
> -
> -	cq->cq_buf = (void *)ucmd.buf_addr;
> -	cq->db_addr = (void *)ucmd.db_addr;
> -	cq->arm_sn = 0;
> -
> -	/*
> -	 * Initialize the IRP state. Need to have a separate irp state
> -	 * for CQ; for now share it with Listener/connector.
> -	 */
> -	ret = hvnd_init_ep(&cq->ep_object, NULL, ND_CQ, nd_dev, uctx);
> -
> -	if (ret) {
> -		hvnd_error("hvnd_init_ep failed ret=%d\n", ret);
> -		goto  err_ucpy;
> -	}
> -
> -	cq->ep_object.cq = cq;
> -	cq->monitor = true;
> -
> -	cq->umem = ib_umem_get(ib_context, ucmd.buf_addr,
> -				(entries * uctx->cqe_size),
> -				IB_ACCESS_LOCAL_WRITE, 1);
> -	if (IS_ERR(cq->umem)) {
> -		ret = IS_ERR(cq->umem);
> -		hvnd_error("ib_umem_get failed ret=%d\n", ret);
> -		goto err_ucpy;
> -	}
> -
> -	ret =  hvnd_db_map_user(uctx, ucmd.db_addr, &cq->db_umem);
> -
> -	if (ret) {
> -		hvnd_error("hvnd_db_map_user failed ret=%d\n", ret);
> -		goto err_db_map;
> -	}
> -
> -	ret = hvnd_create_cq(nd_dev, uctx, cq);
> -
> -	if (ret) {
> -		hvnd_error("hvnd_create_cq failed ret=%d\n", ret);
> -		goto err_cq;
> -	}
> -
> -	cq->ep_object.ep_handle = cq->cq_handle;
> -
> -	if (ib_copy_to_udata(udata, &cq->cqn, sizeof(__u32))) {
> -		hvnd_error("ib_copy_to_udata failed\n");
> -		ret = -EFAULT;
> -		goto err_ucpy_out;
> -	}
> -
> -	if (!disable_cq_notify) {
> -
> -		if (!ep_add_work_pending(&cq->ep_object))
> -			goto err_ucpy_out;
> -
> -		ret = hvnd_notify_cq(nd_dev, cq, ND_CQ_NOTIFY_ANY,
> -			     (u64)&cq->ep_object);
> -
> -		if (ret) {
> -			ep_del_work_pending(&cq->ep_object);
> -			hvnd_error("hvnd_notify_cq failed ret=%d\n", ret);
> -			goto err_ucpy_out;
> -		}
> -	}
> -
> -	hvnd_acquire_uctx_ref(uctx);
> -
> -	return &cq->ibcq;
> -
> -err_ucpy_out:
> -	hvnd_destroy_cq(nd_dev, cq);
> -
> -err_cq:
> -	hvnd_db_unmap_user(uctx, ucmd.db_addr);
> -
> -err_db_map:
> -	ib_umem_release(cq->umem);
> -
> -err_ucpy:
> -	kfree(cq);
> -err_done:
> -	return ERR_PTR(ret);
> -}
> -
> -static struct ib_qp *hvnd_get_qp(struct ib_device *dev, int qpn)
> -{
> -	struct hvnd_dev *nd_dev;
> -	struct hvnd_qp *qp = NULL;
> -
> -	nd_dev = to_nd_dev(dev);
> -	qp = get_qpp(nd_dev, qpn);
> -	return qp ?  &qp->ibqp : NULL;
> -}
> -
> -static int hvnd_ib_destroy_cq(struct ib_cq *ib_cq)
> -{
> -	struct hvnd_ucontext *uctx;
> -	struct hvnd_dev *nd_dev;
> -	struct hvnd_cq *cq;
> -
> -	cq = to_nd_cq(ib_cq);
> -	uctx = cq->uctx;
> -	nd_dev = to_nd_dev(uctx->ibucontext.device);
> -
> -	cq->monitor = false;
> -
> -//	hvnd_cancel_io(&cq->ep_object);
> -	ep_stop(&cq->ep_object);
> -
> -	hvnd_deinit_ep(&cq->ep_object);
> -
> -	hvnd_db_unmap_user(uctx, (u64)cq->db_addr);
> -	ib_umem_release(cq->umem);
> -
> -	hvnd_destroy_cq(nd_dev, cq);
> -
> -	hvnd_drop_uctx_ref(nd_dev, uctx);
> -	kfree(cq);
> -
> -	return 0;
> -}
> -
> -static int hvnd_resize_cq(struct ib_cq *cq, int cqe, struct ib_udata *udata)
> -{
> -	/*
> -	 * NDDirect does not support resizing CQ.
> -	 */
> -	hvnd_info("check code\n");
> -	return -ENOSYS;
> -}
> -
> -static int hvnd_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc)
> -{
> -	hvnd_info("check code\n");
> -	return 0;
> -}
> -
> -static struct ib_mr *hvnd_get_dma_mr(struct ib_pd *pd, int acc)
> -{
> -	hvnd_info("check code\n");
> -	return NULL;
> -}
> -
> -static void debug_dump_umem(struct ib_umem *umem)
> -{
> -#ifdef HVND_MEM_DEBUG
> -	struct ib_umem_chunk *chunk;
> -	struct scatterlist *sg;
> -	int len, j, entry;
> -	int shift = ffs(umem->page_size) - 1;
> -
> -	hvnd_debug("umem=%p\n", umem);
> -	hvnd_debug("context=%p length=%lu offset=%d page_size=%d writable=%d hugetlb=%d\n",
> -		umem->context,
> -		umem->length,
> -		umem->offset,
> -		umem->page_size,
> -		umem->writable,
> -		umem->hugetlb);
> -
> -	list_for_each_entry(chunk, &umem->chunk_list, list) {
> -		hvnd_debug("chunk->nmap=%d\n", chunk->nmap);
> -		for (j = 0; j < chunk->nmap; ++j) {
> -			sg = &chunk->page_list[j];
> -			hvnd_debug("sg_dma_len=%d sg_dma_address=%llx\n",
> -				   sg_dma_len(sg), sg_dma_address(sg));
> -			hvnd_debug("page_link=%lx offset=%u length=%u\n",
> -				   sg->page_link, sg->offset, sg->length);
> -			len = sg_dma_len(&chunk->page_list[j]) >> shift;
> -			for_each_sg(&chunk->page_list[j], sg, len, entry) {
> -				hvnd_debug("PFN=%lu\n",
> -					   page_to_pfn(sg_page(sg)));
> -			}
> -		}
> -	}
> -#endif
> -}
> -
> -
> -static struct ib_mr *hvnd_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
> -				      u64 virt, int acc, struct ib_udata *udata)
> -{
> -	int err = 0;
> -	struct hvnd_ib_pd *hvndpd = to_nd_pd(pd);
> -	struct hvnd_mr *mr;
> -
> -	mr = kmalloc(sizeof(*mr), GFP_KERNEL);
> -	if (!mr)
> -		return ERR_PTR(-ENOMEM);
> -	mr->pd = hvndpd;
> -
> -	mr->umem = ib_umem_get(pd->uobject->context, start, length, acc, 0);
> -	if (IS_ERR(mr->umem)) {
> -		err = PTR_ERR(mr->umem);
> -		hvnd_error("ib_umem_get failed ret=%d\n", err);
> -		kfree(mr);
> -		return ERR_PTR(err);
> -	}
> -
> -	debug_dump_umem(mr->umem);
> -
> -	mr->start = start;
> -	mr->length = length;
> -	mr->virt = virt;
> -	mr->acc = acc;
> -
> -	hvnd_debug("start=%llx length=%llx virt=%llx acc=%d\n",
> -		   start, length, virt, acc);
> -
> -	/*
> -	 * First create a memory region.
> -	 */
> -	err = hvnd_cr_mr(to_nd_dev(pd->device),
> -			to_nd_context(pd->uobject->context), hvndpd->handle,
> -			&mr->mr_handle);
> -	if (err) {
> -		hvnd_error("cr_mr failed; ret is %d\n", err);
> -		goto err;
> -	}
> -
> -	err =  hvnd_mr_register(to_nd_dev(pd->device),
> -				to_nd_context(pd->uobject->context), mr);
> -
> -	if (err)
> -		goto err0;
> -
> -	hvnd_acquire_uctx_ref(to_nd_context(pd->uobject->context));
> -
> -	return &mr->ibmr;
> -
> -err0:
> -	hvnd_free_mr(to_nd_dev(pd->device),
> -		to_nd_context(pd->uobject->context), mr->mr_handle);
> -err:
> -	ib_umem_release(mr->umem);
> -	kfree(mr);
> -	return ERR_PTR(err);
> -}
> -
> -
> -
> -static int hvnd_dereg_mr(struct ib_mr *ib_mr)
> -{
> -	int ret;
> -	struct hvnd_mr *mr = to_nd_mr(ib_mr);
> -	struct hvnd_ucontext *uctx = to_nd_context(ib_mr->pd->uobject->context);
> -	struct hvnd_dev *nd_dev = to_nd_dev(ib_mr->device);
> -
> -
> -	hvnd_debug("dereg_mr entering\n");
> -
> -	ret = hvnd_deregister_mr(nd_dev, uctx, mr->mr_handle);
> -
> -	if (ret) {
> -		hvnd_error("hvnd_deregister_mr() failed: %x\n", ret);
> -		return ret;
> -	}
> -	/*
> -	 * Now free up the memory region.
> -	 */
> -
> -	ret = hvnd_free_mr(nd_dev, uctx, mr->mr_handle);
> -	if (ret) {
> -		hvnd_error("hvnd_free_mr() failed: %x\n", ret);
> -		return ret;
> -	}
> -
> -	ib_umem_release(mr->umem);
> -
> -	hvnd_drop_uctx_ref(nd_dev, uctx);
> -	kfree(mr);
> -
> -	hvnd_debug("dereg_mr done\n");
> -	return 0;
> -}
> -
> -static struct ib_mw *hvnd_alloc_mw(struct ib_pd *pd, enum ib_mw_type type,
> -				   struct ib_udata *udata)
> -{
> -	hvnd_info("check code\n");
> -	return NULL;
> -}
> -
> -static int hvnd_dealloc_mw(struct ib_mw *mw)
> -{
> -	debug_check(__func__, __LINE__);
> -	return 0;
> -}
> -
> -static int hvnd_arm_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags flags)
> -{
> -	struct hvnd_ucontext *uctx;
> -	struct hvnd_dev *nd_dev;
> -	struct hvnd_cq *cq;
> -
> -	cq = to_nd_cq(ibcq);
> -	uctx = cq->uctx;
> -	nd_dev = to_nd_dev(uctx->ibucontext.device);
> -
> -
> -	debug_check(__func__, __LINE__);
> -
> -	return 0;
> -}
> -
> -static int hvnd_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
> -			  struct ib_send_wr **bad_wr)
> -{
> -	debug_check(__func__, __LINE__);
> -	return 0;
> -}
> -
> -int hvnd_post_receive(struct ib_qp *ibqp, struct ib_recv_wr *wr,
> -		      struct ib_recv_wr **bad_wr)
> -{
> -	debug_check(__func__, __LINE__);
> -	return 0;
> -}
> -
> -static int hvnd_resolve_addr(struct sockaddr_in *laddr,
> -			     struct sockaddr_in *raddr,
> -			     struct if_physical_addr *phys_addrstruct)
> -{
> -	int ret;
> -
> -	phys_addrstruct->length = ETH_ALEN;
> -	ret = hvnd_get_neigh_mac_addr((struct sockaddr *)laddr,
> -					(struct sockaddr *)raddr,
> -					phys_addrstruct->addr);
> -
> -	hvnd_debug("Dest MAC is %pM\n", phys_addrstruct->addr);
> -	return ret;
> -}
> -
> -static int hvnd_connect(struct iw_cm_id *cm_id,
> -			struct iw_cm_conn_param *conn_param)
> -{
> -	int ret = 0;
> -	struct hvnd_dev *nd_dev;
> -	struct hvnd_ep_obj  *ep_object;
> -	struct sockaddr_in *raddr = (struct sockaddr_in *)&cm_id->remote_addr;
> -	struct sockaddr_in *laddr = (struct sockaddr_in *)&cm_id->local_addr;
> -	struct hvnd_qp *qp;
> -	struct if_physical_addr phys_addrstruct;
> -	union nd_sockaddr_inet dest_addr;
> -	u64 connector_handle;
> -	union nd_sockaddr_inet addr;
> -	char addr_buf[50];
> -
> -	if (cm_id->remote_addr.ss_family != AF_INET) {
> -		hvnd_error("cm_id->remote_addr.ss_family=%d not AF_INET\n",
> -			   cm_id->remote_addr.ss_family);
> -		return -ENOSYS;
> -	}
> -
> -	qp = get_qpp(to_nd_dev(cm_id->device), conn_param->qpn);
> -
> -	if (!qp) {
> -		hvnd_error("failed to find qp conn_param->qpn=%d\n",
> -			   conn_param->qpn);
> -		return -EINVAL;
> -	}
> -
> -	cm_id->provider_data = qp;
> -	cm_id->add_ref(cm_id);
> -	qp->cm_id = cm_id;
> -
> -	/*
> -	 * Set the read/write limits.
> -	 * Can we change the limits on a created QP? Luke?
> -	 */
> -	nd_dev = to_nd_dev(cm_id->device);
> -	ep_object = hvnd_setup_ep(cm_id, ND_CONNECTOR, nd_dev, qp->uctx);
> -	hvnd_debug("active connection: local irp is %d\n",
> -		   ep_object->local_irp);
> -	if (!ep_object) {
> -		hvnd_error("hvnd_setup_ep failure\n");
> -		ret = -ENOMEM;
> -		goto err_limit;
> -	}
> -
> -	ret = hvnd_cr_connector(nd_dev, qp->uctx,
> -				&connector_handle);
> -
> -	if (ret) {
> -		hvnd_error("hvnd_cr_connector failure ret=%d\n", ret);
> -		goto err_cr_connector;
> -	}
> -
> -	hvnd_acquire_uctx_ref(qp->uctx);
> -	ep_object->ep_handle = connector_handle;
> -	ep_object->incoming = false;
> -	qp->connector = ep_object;
> -
> -	/*
> -	 * Bind the local address to the connector.
> -	 */
> -	hvnd_debug("Connect local address is %s\n",
> -		   debug_inet_ntoa(laddr->sin_addr, addr_buf));
> -
> -	memcpy(&addr.ipv4, laddr, sizeof(struct sockaddr_in));
> -	hvnd_debug("CONNECT AF %d port %d addr %s\n",
> -		   addr.ipv4.sin_family, addr.ipv4.sin_port,
> -		   debug_inet_ntoa(addr.ipv4.sin_addr, addr_buf));
> -
> -	ret = hvnd_bind_connector(nd_dev, qp->uctx,
> -				connector_handle,
> -				&addr);
> -
> -	if (ret) {
> -		hvnd_error("hvnd_bind_connector failed ret=%d\n", ret);
> -		goto err_bind_connector;
> -	}
> -
> -	ret = hvnd_resolve_addr(laddr, raddr, &phys_addrstruct);
> -	if (ret) {
> -		hvnd_error("hvnd_resolve_addr failed ret=%d\n", ret);
> -		goto err_bind_connector;
> -	}
> -
> -	memcpy(&dest_addr.ipv4, raddr, sizeof(struct sockaddr_in));
> -
> -
> -
> -	/*
> -	 * Now attempt to connect.
> -	 */
> -
> -	hvnd_debug("About to initiate connection\n");
> -
> -	if (!ep_add_work_pending(ep_object))
> -		goto err_bind_connector;
> -
> -	ep_object->cm_state = hvnd_cm_connect_received;
> -	ret = hvnd_connector_connect(nd_dev, qp->uctx,
> -					ep_object->ep_handle,
> -					conn_param->ird, conn_param->ord,
> -					conn_param->private_data_len,
> -					(u8 *)conn_param->private_data,
> -					qp->qp_handle,
> -					&phys_addrstruct, &dest_addr,
> -					ep_object);
> -
> -	if (ret == 0)
> -		return 0;
> -
> -	ep_object->cm_state = hvnd_cm_idle;
> -	ep_del_work_pending(ep_object);
> -	hvnd_error("hvnd_connector_connect failed ret=%d\n", ret);
> -
> -err_bind_connector:
> -	qp->connector = NULL;
> -	hvnd_free_connector(nd_dev, qp->uctx,
> -			    connector_handle);
> -	hvnd_drop_uctx_ref(nd_dev, qp->uctx);
> -
> -err_cr_connector:
> -	kfree(ep_object);
> -
> -err_limit:
> -	cm_id->provider_data = NULL;
> -	qp->cm_id = NULL;
> -	cm_id->rem_ref(cm_id);
> -	return ret;
> -}
> -
> -static int hvnd_accept_cr(struct iw_cm_id *cm_id,
> -			  struct iw_cm_conn_param *conn_param)
> -{
> -	int ret = 0;
> -	struct hvnd_dev *nd_dev;
> -	struct hvnd_qp *qp;
> -	struct hvnd_ep_obj *connector;
> -	enum ibv_qp_state new_qp_state;
> -
> -	hvnd_debug("Accepting connection - PASSIVE\n");
> -	nd_dev = to_nd_dev(cm_id->device);
> -	qp = get_qpp(to_nd_dev(cm_id->device), conn_param->qpn);
> -
> -	if (!qp) {
> -		hvnd_error("get_qpp failed conn_param->qpn=%d\n",
> -			   conn_param->qpn);
> -		return -EINVAL;
> -	}
> -
> -
> -	connector = (struct hvnd_ep_obj *)cm_id->provider_data;
> -	qp->connector = connector;
> -
> -	if (connector == NULL) {
> -		hvnd_error("NULL connector!\n");
> -		return -EINVAL;
> -	}
> -	hvnd_debug("connector's cm_id is %p caller cm_id=%p\n",
> -		   connector->cm_id, cm_id);
> -
> -	connector->cq = qp->recv_cq;
> -
> -
> -	/*
> -	 * Setup state for the accepted connection.
> -	 */
> -	cm_id->add_ref(cm_id);
> -	connector->cm_id = cm_id;
> -	if (conn_param == NULL) {
> -		hvnd_error("NULL conn_param!\n");
> -		return -EINVAL;
> -	}
> -
> -	connector->ord = conn_param->ord;
> -	connector->ird = conn_param->ird;
> -
> -	if (!ep_add_work_pending(connector))
> -		goto error;
> -
> -	init_completion(&connector->connector_accept_event);
> -
> -	ret = hvnd_connector_accept(nd_dev, qp->uctx, connector->ep_handle,
> -				    qp->qp_handle, conn_param->ird,
> -				    conn_param->ord,
> -				    conn_param->private_data_len,
> -				    conn_param->private_data,
> -				    &new_qp_state, connector);
> -
> -	if (ret) {
> -		ep_del_work_pending(connector);
> -		hvnd_error("connector accept failed\n");
> -		goto error;
> -	}
> -
> -	wait_for_completion(&connector->connector_accept_event);
> -	ret = connector->connector_accept_status;
> -
> -	if (ret) {
> -		hvnd_error("connector_accept failed status=%x\n", ret);
> -		ret = -EIO;
> -		goto error;
> -	}
> -
> -	hvnd_debug("Passive Connection Accepted; new qp state is %d\n",
> -		   new_qp_state);
> -	connector->cm_state = hvnd_cm_accept_sent;
> -	return 0;
> -
> -error:
> -	ep_stop(connector);
> -	connector->cm_id = NULL;
> -	connector->cm_state = hvnd_cm_idle;
> -
> -	qp->connector = NULL;
> -	cm_id->rem_ref(cm_id);
> -
> -	return ret;
> -}
> -
> -static int hvnd_reject_cr(struct iw_cm_id *cm_id, const void *pdata,
> -			  u8 pdata_len)
> -{
> -	debug_check(__func__, __LINE__);
> -	return 0;
> -}
> -
> -void hvnd_process_disconnect(struct hvnd_ep_obj *ep_object, int status)
> -{
> -	struct iw_cm_event cm_event;
> -
> -	switch (status) {
> -	case STATUS_SUCCESS:
> -	case STATUS_CANCELLED:
> -		break;
> -
> -	default:
> -		hvnd_warn("disconnect complete failed: status:%d\n", status);
> -	}
> -
> -
> -	hvnd_debug("active disconnect processed\n");
> -	memset(&cm_event, 0, sizeof(cm_event));
> -
> -	complete(&ep_object->disconnect_event);
> -}
> -
> -
> -void hvnd_process_notify_disconnect(struct hvnd_ep_obj *ep_object, int status)
> -{
> -	struct iw_cm_event cm_event;
> -
> -	// make sure we only disconnect once
> -	if (atomic_xchg(&ep_object->disconnect_notified, 1))
> -		return;
> -
> -	/*
> -	 * Turn off CQ monitoring.
> -	 */
> -	if (ep_object->cq)
> -		ep_object->cq->monitor = false;
> -
> -	switch (ep_object->cm_state) {
> -	case hvnd_cm_connect_reply_sent:
> -	case hvnd_cm_established_sent:
> -	case hvnd_cm_accept_sent:
> -		break;
> -
> -	default:
> -		hvnd_error("unexpected cm_state=%d\n", ep_object->cm_state);
> -		return;
> -	}
> -
> -	switch (status) {
> -	case STATUS_SUCCESS:
> -	case STATUS_CANCELLED:
> -	case STATUS_DISCONNECTED:
> -		break;
> -
> -	default:
> -		hvnd_warn("notify disconnect complete failed: status:%d\n",
> -			  status);
> -	}
> -
> -	hvnd_debug("passive disconnect notified\n");
> -	memset(&cm_event, 0, sizeof(cm_event));
> -
> -	/*
> -	 * Other end disconnected.
> -	 * Connection has been disconnected;
> -	 * notify the cm layer.
> -	 */
> -	cm_event.status = -ECONNRESET;
> -	cm_event.event = IW_CM_EVENT_CLOSE;
> -
> -	if ((ep_object->cm_id) &&
> -	    (ep_object->cm_id->event_handler)) {
> -
> -		ep_object->cm_id->event_handler(ep_object->cm_id, &cm_event);
> -
> -		ep_object->cm_id->rem_ref(ep_object->cm_id);
> -		ep_object->cm_state = hvnd_cm_close_sent;
> -	}
> -}
> -
> -void hvnd_process_connector_accept(struct hvnd_ep_obj *ep_object, int status)
> -{
> -	struct iw_cm_event cm_event;
> -	int ret;
> -
> -	/*
> -	 * This is the problem area the return status may be:
> -	 * 1: 0xc00000b5 (3221225653) - {Device Timeout} The specified I/O
> -	 *    operation on %hs was not completed before the time-out period
> -	 *    expired
> -	 * 2: NTSTATUS 0xc0000241 (3221226049) - The transport connection was
> -	 *    aborted by the local system.
> -	 * If we do nothing here, iwcm will wait for IW_CM_EVENT_ESTABLISHED
> -	 * forever, and unable to clean shutdown need to fail the call earlier
> -	 * on accept.
> -	 */
> -
> -	ep_object->connector_accept_status = status;
> -
> -	if (status) {
> -		hvnd_error("Connector accept failed; status is %x\n", status);
> -		complete(&ep_object->connector_accept_event);
> -		return;
> -	}
> -
> -	memset(&cm_event, 0, sizeof(cm_event));
> -	cm_event.event = IW_CM_EVENT_ESTABLISHED;
> -	cm_event.ird = ep_object->ird;
> -	cm_event.ord = ep_object->ord;
> -	cm_event.provider_data = (void *)ep_object;
> -
> -	/*
> -	 * We have successfully passively accepted the
> -	 * incoming connection.
> -	 */
> -
> -	hvnd_debug("Passive connection accepted!!\n");
> -	if ((ep_object->cm_id) &&
> -	    (ep_object->cm_id->event_handler)) {
> -		ep_object->cm_id->event_handler(ep_object->cm_id, &cm_event);
> -		ep_object->cm_state = hvnd_cm_established_sent;
> -	}
> -
> -	complete(&ep_object->connector_accept_event);
> -
> -	/*
> -	 * Request notification if the other end
> -	 * were to disconnect.
> -	 */
> -	if (!ep_add_work_pending(ep_object))
> -		return;
> -
> -	ret = hvnd_connector_notify_disconnect(ep_object->nd_dev,
> -						   ep_object->uctx,
> -						   ep_object->ep_handle,
> -						   ep_object);
> -
> -	if (ret) {
> -		ep_del_work_pending(ep_object);
> -		hvnd_error("Connector notify disconnect failed; ret: %d\n",
> -			   ret);
> -	}
> -}
> -
> -
> -void hvnd_process_cq_event_pending(struct hvnd_ep_obj *ep_object,
> -					 int status)
> -{
> -
> -	struct ib_cq *ibcq;
> -	struct hvnd_cq *cq;
> -
> -	cq = ep_object->cq;
> -	ibcq = &ep_object->cq->ibcq;
> -
> -	if (!cq->monitor)
> -		return;
> -
> -	// call the previous CQ complete
> -	if ((status == STATUS_PENDING) && cq->upcall_pending &&
> -	    ibcq->comp_handler) {
> -		ibcq->comp_handler(ibcq, ibcq->cq_context);
> -		cq->upcall_pending = false;
> -		hvnd_debug("CQ comp_handler called arm_sn=%d\n", cq->arm_sn);
> -	}
> -
> -	if ((status != STATUS_PENDING) && ibcq->comp_handler &&
> -	    ibcq->cq_context) {
> -		ibcq->comp_handler(ibcq, ibcq->cq_context);
> -		hvnd_error("CQ comp_handler called status=%x\n", status);
> -	}
> -}
> -
> -void hvnd_process_cq_event_complete(struct hvnd_ep_obj *ep_object,
> -					 int status)
> -{
> -	struct ib_cq *ibcq;
> -	struct hvnd_cq *cq;
> -	int ret;
> -
> -	cq = ep_object->cq;
> -	ibcq = &ep_object->cq->ibcq;
> -
> -	// call hte previous CQ complete
> -	if (cq->upcall_pending && ibcq->comp_handler) {
> -		ibcq->comp_handler(ibcq, ibcq->cq_context);
> -		cq->upcall_pending = false;
> -		hvnd_debug("CQ comp_handler called arm_sn=%d\n", cq->arm_sn);
> -	}
> -
> -	cq->upcall_pending = true;
> -	if (!ep_add_work_pending(ep_object))
> -		return;
> -
> -	ret = hvnd_notify_cq(ep_object->nd_dev,
> -			ep_object->cq,
> -			ND_CQ_NOTIFY_ANY,
> -			(u64)ep_object);
> -
> -	if (ret) {
> -		ep_del_work_pending(ep_object);
> -//		hvnd_manage_io_state(ep_object, true);
> -		hvnd_error("hvnd_notify_cq failed ret=%d\n", ret);
> -	}
> -
> -	if ((status != 0) && (status != STATUS_CANCELLED)) {
> -		if (ibcq->event_handler) {
> -			struct ib_event event;
> -
> -			event.device = ibcq->device;
> -			event.event = IB_EVENT_CQ_ERR;
> -			event.element.cq = ibcq;
> -			ibcq->event_handler(&event, ibcq->cq_context);
> -
> -			hvnd_warn("CQ event_handler called status=%x\n",
> -				  status);
> -		}
> -	}
> -}
> -
> -int init_cm_event(struct hvnd_ep_obj *ep_object, struct iw_cm_event *cm_event,
> -		  int event)
> -{
> -	struct sockaddr_in *laddr = (struct sockaddr_in *)&cm_event->local_addr;
> -	struct sockaddr_in *raddr = (struct sockaddr_in *)&cm_event->remote_addr;
> -	struct nd_read_limits rd_limits;
> -	union nd_sockaddr_inet local_addr;
> -	union nd_sockaddr_inet remote_addr;
> -	int ret;
> -
> -	/*
> -	 * Now get the local address.
> -	 */
> -	ret = hvnd_connector_get_local_addr(ep_object->nd_dev,
> -					    ep_object->uctx,
> -					    ep_object->ep_handle,
> -					    &local_addr);
> -
> -	if (ret) {
> -		hvnd_error("Connector get addr failed; ret: %d\n", ret);
> -		return ret;
> -	}
> -	/*
> -	 * Now get the remote address.
> -	 */
> -	ret = hvnd_connector_get_peer_addr(ep_object->nd_dev,
> -					   ep_object->uctx,
> -					   ep_object->ep_handle,
> -					   &remote_addr);
> -
> -	if (ret) {
> -		hvnd_error("Connector get peer addr failed; ret: %d\n", ret);
> -		return ret;
> -	}
> -
> -	/*
> -	 * Get other connection parameters.
> -	 */
> -
> -	ret = hvnd_connector_get_rd_limits(ep_object->nd_dev,
> -					   ep_object->uctx,
> -					   ep_object->ep_handle,
> -					   &rd_limits);
> -
> -	if (ret) {
> -		hvnd_error("Connector rd limits failed; ret: %d\n", ret);
> -		return ret;
> -	}
> -
> -	/*
> -	 * XXXKYS: Luke: What about the length of the priv data?
> -	 */
> -	ret = hvnd_connector_get_priv_data(ep_object->nd_dev,
> -					   ep_object->uctx,
> -					   ep_object->ep_handle,
> -					   ep_object->priv_data);
> -
> -	if (ret) {
> -		hvnd_error("Connector get priv data failed; ret: %d\n", ret);
> -		return ret;
> -	}
> -	/*
> -	 * Initialize CM structure.
> -	 */
> -	laddr->sin_addr.s_addr = local_addr.ipv4.sin_addr.s_addr;
> -	hvnd_debug("Local addr is %d\n", laddr->sin_addr.s_addr);
> -	laddr->sin_port = local_addr.ipv4.sin_port;
> -	laddr->sin_family = AF_INET;
> -
> -	raddr->sin_addr.s_addr = remote_addr.ipv4.sin_addr.s_addr;
> -	hvnd_debug("Remote addr is %d\n", raddr->sin_addr.s_addr);
> -	raddr->sin_port = remote_addr.ipv4.sin_port;
> -	raddr->sin_family = AF_INET;
> -
> -	// KYS; LUke: is it always 148 bytes?
> -	cm_event->private_data_len = MAX_PRIVATE_DATA_LEN;
> -	cm_event->private_data = ep_object->priv_data;
> -
> -	cm_event->ird = rd_limits.inbound;
> -	cm_event->ord = rd_limits.outbound;
> -	cm_event->event = event;
> -
> -	ep_object->ird = cm_event->ird;
> -	ep_object->ord = cm_event->ord;
> -
> -	return 0;
> -}
> -
> -static void hvnd_refuse_connection(struct hvnd_ep_obj *connector, int status)
> -{
> -	struct iw_cm_event cm_event;
> -
> -	memset(&cm_event, 0, sizeof(cm_event));
> -
> -	cm_event.event = IW_CM_EVENT_CONNECT_REPLY;
> -	cm_event.status = status;
> -
> -	hvnd_debug("returning status %d on connector %p\n", status, connector);
> -
> -	if (connector->cm_id && connector->cm_id->event_handler) {
> -		connector->cm_id->event_handler(connector->cm_id, &cm_event);
> -		connector->cm_id->rem_ref(connector->cm_id);
> -		connector->cm_state = hvnd_cm_connect_reply_refused;
> -	}
> -}
> -
> -void hvnd_process_events(struct work_struct *work)
> -{
> -	struct hvnd_work *wrk;
> -	struct nd_read_limits rd_limits;
> -	struct hvnd_ep_obj *ep_object;
> -	struct hvnd_ep_obj *parent;
> -	struct iw_cm_event cm_event;
> -	struct sockaddr_in *laddr = (struct sockaddr_in *)&cm_event.local_addr;
> -	struct sockaddr_in *raddr = (struct sockaddr_in *)&cm_event.remote_addr;
> -	struct ndv_packet_hdr_control_1 *ctrl_hdr;
> -	union nd_sockaddr_inet local_addr;
> -	union nd_sockaddr_inet remote_addr;
> -	struct pkt_nd_get_connection_listener *connection_pkt;
> -	struct iw_cm_id *cm_id = NULL;
> -	int status;
> -	int ioctl;
> -	int ret;
> -	char priv_data[MAX_PRIVATE_DATA_LEN];
> -	enum ibv_qp_state new_qp_state;
> -	struct incoming_pkt *incoming_pkt;
> -	unsigned long flags;
> -
> -	memset(&cm_event, 0, sizeof(cm_event));
> -	memset(&priv_data, 0, MAX_PRIVATE_DATA_LEN);
> -
> -
> -	wrk = container_of(work, struct hvnd_work, work);
> -
> -	/*
> -	 * Now call into the connection manager.
> -	 */
> -	ep_object = (struct hvnd_ep_obj *)wrk->callback_arg;
> -	parent = ep_object->parent;
> -
> -process_next:
> -	incoming_pkt = NULL;
> -	spin_lock_irqsave(&ep_object->incoming_pkt_list_lock, flags);
> -	if (!list_empty(&ep_object->incoming_pkt_list)) {
> -		incoming_pkt = list_first_entry(&ep_object->incoming_pkt_list,
> -						struct incoming_pkt,
> -						list_entry);
> -		list_del(&incoming_pkt->list_entry);
> -	}
> -	spin_unlock_irqrestore(&ep_object->incoming_pkt_list_lock, flags);
> -	if (incoming_pkt == NULL)
> -		return;
> -
> -	ctrl_hdr = (struct ndv_packet_hdr_control_1 *)incoming_pkt->pkt;
> -	status = ctrl_hdr->io_status;
> -	ioctl = ctrl_hdr->io_cntrl_code;
> -
> -	hvnd_debug("Process Events IOCTL is: %s; iostatus failure: %x in work queue\n",
> -		   hvnd_get_op_name(ioctl), status);
> -
> -	if (status != 0) {
> -		bool log_error = true;
> -
> -		if (ioctl == IOCTL_ND_CONNECTOR_NOTIFY_DISCONNECT &&
> -		    status == STATUS_DISCONNECTED) // expected
> -			log_error = false;
> -
> -		if (log_error)
> -			hvnd_warn("Process Events IOCTL is: %s; iostatus failure: %x\n",
> -				  hvnd_get_op_name(ioctl), status);
> -	}
> -
> -	cm_event.status = status;
> -
> -	switch (ep_object->type) {
> -	case ND_CONNECTOR:
> -		switch (ioctl) {
> -		case IOCTL_ND_LISTENER_GET_CONNECTION_REQUEST:
> -
> -			if (ep_object->parent != NULL) {
> -
> -				// Do nothing with this connection request if
> -				// listener is stopping
> -				if (!ep_add_work_pending(ep_object->parent))
> -					break;
> -
> -				cm_id = ep_object->parent->cm_id; //Listener
> -			}
> -
> -			connection_pkt = (struct pkt_nd_get_connection_listener *) ctrl_hdr;
> -
> -			if ((status == 0) || (status == STATUS_CANCELLED)) {
> -				hvnd_get_incoming_connections(ep_object->parent,
> -					ep_object->parent->nd_dev,
> -					ep_object->uctx);
> -			}
> -
> -			if (status)
> -				goto get_connection_request_done;
> -
> -			/*
> -			 * Now get the local address.
> -			 */
> -			ret = hvnd_connector_get_local_addr(ep_object->nd_dev,
> -						     ep_object->uctx,
> -						     ep_object->ep_handle,
> -						     &local_addr);
> -
> -			if (ret) {
> -				hvnd_error("Connector get addr failed; ret: %d\n",
> -					   ret);
> -				goto get_connection_request_done;
> -			}
> -			/*
> -			 * Now get the remote address.
> -			 */
> -			ret = hvnd_connector_get_peer_addr(ep_object->nd_dev,
> -						     ep_object->uctx,
> -						     ep_object->ep_handle,
> -						     &remote_addr);
> -
> -			if (ret) {
> -				hvnd_error("Connector get peer addr failed; ret: %d\n",
> -					   ret);
> -				goto get_connection_request_done;
> -			}
> -			/*
> -			 * Get other connection parameters.
> -			 */
> -
> -			ret = hvnd_connector_get_rd_limits(ep_object->nd_dev,
> -							   ep_object->uctx,
> -							   ep_object->ep_handle,
> -							   &rd_limits);
> -
> -			if (ret) {
> -				hvnd_error("Connector rd imits failed; ret: %d\n",
> -					   ret);
> -				goto get_connection_request_done;
> -			}
> -
> -			/*
> -			 * XXXKYS: Luke: What about the length of the priv data?
> -			 */
> -			ret = hvnd_connector_get_priv_data(
> -				ep_object->nd_dev, ep_object->uctx,
> -				ep_object->ep_handle, ep_object->priv_data);
> -
> -			if (ret) {
> -				hvnd_error("Connector get priv data failed; ret: %d\n",
> -					   ret);
> -				goto get_connection_request_done;
> -			}
> -
> -			cm_event.event = IW_CM_EVENT_CONNECT_REQUEST;
> -			cm_event.provider_data = (void *)ep_object;
> -
> -			laddr->sin_addr.s_addr = local_addr.ipv4.sin_addr.s_addr;
> -			hvnd_debug("Local addr is %d\n",
> -				   laddr->sin_addr.s_addr);
> -			laddr->sin_port = local_addr.ipv4.sin_port;
> -			laddr->sin_family = AF_INET;
> -
> -			raddr->sin_addr.s_addr = remote_addr.ipv4.sin_addr.s_addr;
> -			hvnd_debug("Remote addr is %d\n",
> -				   raddr->sin_addr.s_addr);
> -			raddr->sin_port = remote_addr.ipv4.sin_port;
> -			raddr->sin_family = AF_INET;
> -
> -			// KYS; LUke: is it always 148 bytes?
> -			cm_event.private_data_len = MAX_PRIVATE_DATA_LEN;
> -			cm_event.private_data = ep_object->priv_data;
> -
> -			cm_event.ird = rd_limits.inbound;
> -			cm_event.ord = rd_limits.outbound;
> -
> -			ep_object->ird = cm_event.ird;
> -			ep_object->ord = cm_event.ord;
> -
> -
> -			if ((cm_id != NULL) && cm_id->event_handler) {
> -				cm_id->event_handler(cm_id, &cm_event);
> -				ep_object->cm_state = hvnd_cm_connect_request_sent;
> -			}
> -
> -get_connection_request_done:
> -			if (ep_object->parent != NULL)
> -				ep_del_work_pending(ep_object->parent);
> -			break;
> -
> -		case IOCTL_ND_CONNECTOR_CONNECT:
> -
> -			cm_event.event = IW_CM_EVENT_CONNECT_REPLY;
> -			if (status == STATUS_TIMEOUT &&
> -			    ep_object->connector_connect_retry < 3) {
> -				//TIMEOUT retry
> -
> -				if (!ep_add_work_pending(ep_object))
> -					goto refuse_connection;
> -
> -				hvnd_warn("Connector connect timed out, reconnecting... retry count: %d\n",
> -					  ep_object->connector_connect_retry);
> -				ep_object->connector_connect_retry++;
> -				ret = hvnd_send_ioctl_pkt(ep_object->nd_dev,
> -					&ep_object->connector_connect_pkt.hdr,
> -					sizeof(ep_object->connector_connect_pkt),
> -					(u64)&ep_object->connector_connect_pkt);
> -
> -				if (ret) {
> -					hvnd_error("Connector on time out failed: %d\n",
> -						   ret);
> -					ep_del_work_pending(ep_object);
> -					goto refuse_connection;
> -				}
> -				break;
> -			}
> -
> -refuse_connection:
> -			if (status) {
> -				cm_event.status = -ECONNREFUSED;
> -				if (status == STATUS_TIMEOUT)
> -					cm_event.status = -ETIMEDOUT;
> -
> -				hvnd_refuse_connection(ep_object,
> -						       cm_event.status);
> -				break;
> -			}
> -
> -			hvnd_debug("ACTIVE Connection ACCEPTED\n");
> -			ret = init_cm_event(ep_object, &cm_event,
> -					    IW_CM_EVENT_CONNECT_REPLY);
> -			if (ret) {
> -				hvnd_error("init_cm_event failed ret=%d\n",
> -					   ret);
> -				goto process_done;
> -			}
> -
> -			ret = hvnd_connector_complete_connect(ep_object->nd_dev,
> -						ep_object->uctx,
> -						ep_object->ep_handle,
> -						&new_qp_state);
> -			if (ret) {
> -				hvnd_error("connector_complete failed\n");
> -				goto process_done;
> -			}
> -
> -			cm_event.provider_data = (void *)ep_object;
> -
> -			if ((ep_object->cm_id) &&
> -				(ep_object->cm_id->event_handler)) {
> -				ep_object->cm_id->event_handler(
> -					ep_object->cm_id, &cm_event);
> -				ep_object->cm_state = hvnd_cm_connect_reply_sent;
> -			}
> -			/*
> -			 * Rquest notification if the other end
> -			 * were to disconnect.
> -			 */
> -			if (!ep_add_work_pending(ep_object))
> -				goto process_done;
> -
> -			ret = hvnd_connector_notify_disconnect(
> -				ep_object->nd_dev, ep_object->uctx,
> -				ep_object->ep_handle, ep_object);
> -
> -			if (ret) {
> -				ep_del_work_pending(ep_object);
> -				hvnd_error("Connector notify disconnect failed; ret: %d\n",
> -					   ret);
> -			}
> -
> -			break;
> -
> -		case IOCTL_ND_CONNECTOR_NOTIFY_DISCONNECT:
> -			hvnd_process_notify_disconnect(ep_object, status);
> -			break;
> -
> -
> -		default:
> -			hvnd_error("Unknown Connector IOCTL\n");
> -			break;
> -		}
> -		break;
> -	default:
> -		hvnd_error("Unknown endpoint object\n");
> -		break;
> -	}
> -process_done:
> -	kfree(incoming_pkt);
> -	ep_del_work_pending(ep_object);
> -
> -	goto process_next;
> -}
> -
> -
> -static struct hvnd_ep_obj *hvnd_setup_ep(struct iw_cm_id *cm_id, int ep_type,
> -					struct hvnd_dev *nd_dev,
> -					struct hvnd_ucontext *uctx)
> -{
> -	struct hvnd_ep_obj *ep_object;
> -	int ret;
> -
> -	ep_object = kzalloc(sizeof(struct hvnd_ep_obj), GFP_KERNEL);
> -
> -	if (!ep_object)
> -		return NULL;
> -
> -	ret = hvnd_init_ep(ep_object, cm_id, ep_type, nd_dev, uctx);
> -
> -	if (ret) {
> -		hvnd_error("hvnd_init_ep failed ret=%d\n", ret);
> -		kfree(ep_object);
> -		return NULL;
> -	}
> -
> -	return ep_object;
> -}
> -
> -/*
> - * return value:
> - * true: I/O state is stopped, we should not do upcall
> - * flase: I/O state is running and normal
> - */
> -#if 0
> -static bool hvnd_manage_io_state(struct hvnd_ep_obj *ep, bool failure)
> -{
> -	unsigned long flags;
> -
> -	spin_lock_irqsave(&ep->ep_lk, flags);
> -	if (ep->to_be_destroyed) {
> -		hvnd_warn("ep being destroyed\n");
> -		if (ep->io_outstanding) {
> -			hvnd_warn("ep being destroyed i/O pending waking up on %p\n",
> -				  &ep->block_event);
> -			complete(&ep->block_event);
> -			ep->io_outstanding = false;
> -		}
> -		spin_unlock_irqrestore(&ep->ep_lk, flags);
> -		return true;
> -	}
> -	if (!failure)
> -		ep->io_outstanding = true;
> -	spin_unlock_irqrestore(&ep->ep_lk, flags);
> -	return false;
> -}
> -#endif
> -
> -static int hvnd_get_incoming_connections(struct hvnd_ep_obj *listener,
> -					 struct hvnd_dev *nd_dev,
> -					 struct hvnd_ucontext *uctx)
> -{
> -	struct hvnd_ep_obj *connector;
> -	u64 connector_handle;
> -	int ret;
> -
> -	/*
> -	 * First handle the protocol for
> -	 * destruction - outstanding I/O.
> -	 */
> -
> -//	if (hvnd_manage_io_state(listener, false))
> -//		return 0;
> -	/*
> -	 * Create a connector.
> -	 */
> -	connector = hvnd_setup_ep(listener->cm_id, ND_CONNECTOR, nd_dev, uctx);
> -	if (!connector) {
> -		hvnd_error("hvnd_setup_ep failed\n");
> -		ret = -ENOMEM;
> -		goto con_alloc_err;
> -	}
> -
> -	ret = hvnd_cr_connector(nd_dev, uctx,
> -				&connector_handle);
> -	if (ret) {
> -		hvnd_error("hvnd_cr_connector failed ret=%d\n", ret);
> -		goto con_cr_err;
> -	}
> -
> -	/*
> -	 * Now get a connection if one is pending.
> -	 */
> -	connector->ep_handle = connector_handle;
> -	connector->parent = listener;
> -
> -	if (!ep_add_work_pending(connector))
> -		goto get_connection_err;
> -
> -	ret = hvnd_get_connection_listener(nd_dev, uctx,
> -					listener->ep_handle,
> -					connector_handle,
> -					(u64)connector);
> -
> -	if (ret) {
> -		hvnd_debug("listener_get_connection failed\n");
> -		ep_del_work_pending(connector);
> -		goto get_connection_err;
> -	}
> -
> -	hvnd_acquire_uctx_ref(uctx);
> -	listener->outstanding_handle = connector_handle;
> -	listener->outstanding_ep = connector;
> -	hvnd_debug("outstanding handle is %p\n", (void *)connector_handle);
> -	return 0;
> -
> -get_connection_err:
> -	hvnd_free_handle(nd_dev, uctx,
> -			connector_handle,
> -			IOCTL_ND_CONNECTOR_FREE);
> -
> -con_cr_err:
> -	kfree(connector);
> -con_alloc_err:
> -//	hvnd_manage_io_state(listener, true);
> -	return ret;
> -}
> -
> -static int hvnd_create_listen(struct iw_cm_id *cm_id, int backlog)
> -{
> -	int ret = 0;
> -	struct hvnd_dev *nd_dev;
> -	struct hvnd_ucontext *uctx;
> -	struct hvnd_ep_obj *ep_object;
> -	union nd_sockaddr_inet addr;
> -	union nd_sockaddr_inet local_addr;
> -	u64 listener_handle;
> -	struct sockaddr_in *laddr = (struct sockaddr_in *)&cm_id->local_addr;
> -	union nd_sockaddr_inet og_addr;
> -
> -
> -	nd_dev = to_nd_dev(cm_id->device);
> -	uctx = get_uctx(nd_dev, current_pid());
> -	hvnd_debug("uctx is %p; pid is %d\n", uctx, current_pid());
> -
> -	if (cm_id->local_addr.ss_family != AF_INET) {
> -		hvnd_error("cm_id->local_addr.ss_family =%d not AF_INET\n",
> -			   cm_id->local_addr.ss_family);
> -		return -ENOSYS;
> -	}
> -
> -	/*
> -	 * If the local address is LOOPBACK or INADDR_ANY, get an an address
> -	 * to bind the listener. For now, just get the first address
> -	 * available.
> -	 */
> -
> -	if (IN_LOOPBACK(ntohl(laddr->sin_addr.s_addr)) ||
> -		(laddr->sin_addr.s_addr == INADDR_ANY)) {
> -
> -		hvnd_debug("need to get an address\n");
> -		ret = hvnd_get_outgoing_rdma_addr(nd_dev, uctx, &og_addr);
> -
> -		if (ret) {
> -			hvnd_error("failed to get the og address\n");
> -			return ret;
> -		}
> -
> -		laddr->sin_addr.s_addr = og_addr.ipv4.sin_addr.s_addr;
> -	}
> -
> -	cm_id->add_ref(cm_id);
> -
> -	ep_object = hvnd_setup_ep(cm_id, ND_LISTENER, nd_dev, uctx);
> -
> -	if (!ep_object) {
> -		hvnd_error("hvnd_setup_ep returned NULL\n");
> -		goto alloc_err;
> -	}
> -
> -	ret = hvnd_cr_listener(nd_dev, uctx,
> -				&listener_handle);
> -	if (ret) {
> -		hvnd_error("hvnd_cr_listener failed ret=%d\n", ret);
> -		goto cr_err;
> -	}
> -
> -	ep_object->ep_handle = listener_handle;
> -
> -	cm_id->provider_data = ep_object;
> -
> -	/*
> -	 * Now bind the listener.
> -	 * IPV4 support only.
> -	 */
> -	memcpy(&addr.ipv4, laddr, sizeof(struct sockaddr_in));
> -
> -	ret = hvnd_bind_listener(nd_dev, uctx,
> -				listener_handle,
> -				&addr);
> -	if (ret) {
> -		hvnd_error("hvnd_bind_listener failed ret=%d\n", ret);
> -		goto bind_err;
> -	}
> -
> -	/*
> -	 * Now get the local address.
> -	 */
> -	ret = hvnd_get_addr_listener(nd_dev, uctx,
> -					listener_handle,
> -					&local_addr);
> -	if (ret) {
> -		hvnd_error("hvnd_get_addr_listener failed ret=%d\n", ret);
> -		goto bind_err;
> -	}
> -
> -	/*
> -	 * Now put the listener in the listen mode.
> -	 */
> -
> -	ret = hvnd_listen_listener(nd_dev, uctx,
> -				listener_handle,
> -				backlog);
> -
> -	if (ret) {
> -		hvnd_error("hvnd_listen_listener failed ret=%d\n", ret);
> -		goto bind_err;
> -	}
> -
> -
> -	/*
> -	 * Now get a pending connection if one is pending.
> -	 */
> -	ret = hvnd_get_incoming_connections(ep_object, nd_dev, uctx);
> -	if (ret) {
> -		hvnd_error("hvnd_get_incoming_connections failed ret=%d\n",
> -			   ret);
> -		goto bind_err;
> -	}
> -
> -	hvnd_acquire_uctx_ref(uctx);
> -	hvnd_debug("cm_id=%p\n", cm_id);
> -	return 0;
> -
> -bind_err:
> -	hvnd_free_handle(nd_dev, uctx,
> -			listener_handle,
> -			IOCTL_ND_LISTENER_FREE);
> -cr_err:
> -	kfree(ep_object);
> -alloc_err:
> -	cm_id->provider_data = NULL;
> -	cm_id->rem_ref(cm_id);
> -	return ret;
> -}
> -
> -static int hvnd_destroy_listen(struct iw_cm_id *cm_id)
> -{
> -	struct hvnd_dev *nd_dev;
> -	struct hvnd_ucontext *uctx;
> -	struct hvnd_ep_obj *ep_object;
> -
> -	nd_dev = to_nd_dev(cm_id->device);
> -
> -	ep_object = (struct hvnd_ep_obj *)cm_id->provider_data;
> -
> -	hvnd_debug("uctx is %p\n", ep_object->uctx);
> -	hvnd_debug("Destroying Listener cm_id=%p\n", cm_id);
> -	uctx = ep_object->uctx;
> -
> -	// make sure there is nothing in progress on this ep
> -	ep_stop(ep_object);
> -
> -	hvnd_free_handle(nd_dev, uctx,
> -			ep_object->ep_handle,
> -			IOCTL_ND_LISTENER_FREE);
> -
> -	/*
> -	 * We may have an ouststanding connector for
> -	 * incoming connection requests; clean it up.
> -	 */
> -
> -	if (ep_object->outstanding_handle != 0) {
> -
> -		// make sure there is nothing in progress on this ep
> -		ep_stop(ep_object->outstanding_ep);
> -
> -		hvnd_free_handle(nd_dev, uctx,
> -				ep_object->outstanding_handle,
> -				IOCTL_ND_CONNECTOR_FREE);
> -
> -
> -		hvnd_drop_uctx_ref(nd_dev, uctx);
> -		hvnd_destroy_ep(ep_object->outstanding_ep);
> -	}
> -
> -	/*
> -	 * Now everything should have stopped
> -	 */
> -
> -	cm_id->rem_ref(cm_id);
> -	hvnd_destroy_ep(ep_object);
> -	cm_id->provider_data = NULL;
> -	hvnd_drop_uctx_ref(nd_dev, uctx);
> -
> -	hvnd_debug("cm_id=%p\n", cm_id);
> -	return 0;
> -}
> -
> -static void hvnd_qp_add_ref(struct ib_qp *ibqp)
> -{
> -	struct hvnd_qp *qp = to_nd_qp(ibqp);
> -
> -	atomic_inc(&qp->refcnt);
> -}
> -
> -void hvnd_qp_rem_ref(struct ib_qp *ibqp)
> -{
> -	struct hvnd_qp *qp = to_nd_qp(ibqp);
> -
> -	if (atomic_dec_and_test(&qp->refcnt))
> -		wake_up(&qp->wait);
> -}
> -
> -static DEVICE_ATTR(hw_rev, 0444, hvnd_show_rev, NULL);
> -static DEVICE_ATTR(fw_ver, 0444, hvnd_show_fw_ver, NULL);
> -static DEVICE_ATTR(hca_type, 0444, hvnd_show_hca, NULL);
> -static DEVICE_ATTR(board_id, 0444, hvnd_show_board, NULL);
> -
> -static struct device_attribute *hvnd_class_attributes[] = {
> -	&dev_attr_hw_rev,
> -	&dev_attr_fw_ver,
> -	&dev_attr_hca_type,
> -	&dev_attr_board_id,
> -};
> -
> -int hvnd_register_device(struct hvnd_dev *dev, char *ip_addr, char *mac_addr)
> -{
> -	int ret;
> -
> -	dev->ibdev.owner = THIS_MODULE;
> -	dev->device_cap_flags = IB_DEVICE_LOCAL_DMA_LKEY | IB_DEVICE_MEM_WINDOW;
> -	dev->ibdev.local_dma_lkey = 0;
> -	dev->ibdev.uverbs_cmd_mask =
> -	    (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
> -	    (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
> -	    (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
> -	    (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
> -	    (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
> -	    (1ull << IB_USER_VERBS_CMD_REG_MR) |
> -	    (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
> -	    (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
> -	    (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
> -	    (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
> -	    (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) |
> -	    (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
> -	    (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
> -	    (1ull << IB_USER_VERBS_CMD_QUERY_QP) |
> -	    (1ull << IB_USER_VERBS_CMD_POLL_CQ) |
> -	    (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
> -	    (1ull << IB_USER_VERBS_CMD_POST_SEND) |
> -	    (1ull << IB_USER_VERBS_CMD_POST_RECV);
> -	dev->ibdev.node_type = RDMA_NODE_RNIC;
> -	memcpy(dev->ibdev.node_desc, HVND_NODE_DESC, sizeof(HVND_NODE_DESC));
> -	memcpy(&dev->ibdev.node_guid, mac_addr, 6);
> -	dev->ibdev.phys_port_cnt = 1; //dev->nports;
> -	dev->ibdev.num_comp_vectors = 1;
> -	dev->ibdev.query_device = hvnd_query_device;
> -	dev->ibdev.query_port = hvnd_query_port;
> -	dev->ibdev.get_link_layer = hvnd_get_link_layer;
> -	dev->ibdev.query_pkey = hvnd_query_pkey;
> -	dev->ibdev.query_gid = hvnd_query_gid;
> -	dev->ibdev.alloc_ucontext = hvnd_alloc_ucontext;
> -	dev->ibdev.dealloc_ucontext = hvnd_dealloc_ucontext;
> -	dev->ibdev.mmap = hvnd_mmap;
> -	dev->ibdev.alloc_pd = hvnd_allocate_pd;
> -	dev->ibdev.dealloc_pd = hvnd_deallocate_pd;
> -	dev->ibdev.create_ah = hvnd_ah_create;
> -	dev->ibdev.destroy_ah = hvnd_ah_destroy;
> -	dev->ibdev.create_qp = hvnd_ib_create_qp;
> -	dev->ibdev.modify_qp = hvnd_ib_modify_qp;
> -	dev->ibdev.query_qp = hvnd_ib_query_qp;
> -	dev->ibdev.destroy_qp = hvnd_destroy_qp;
> -	dev->ibdev.create_cq = hvnd_ib_create_cq;
> -	dev->ibdev.destroy_cq = hvnd_ib_destroy_cq;
> -	dev->ibdev.resize_cq = hvnd_resize_cq;
> -	dev->ibdev.poll_cq = hvnd_poll_cq;
> -	dev->ibdev.get_dma_mr = hvnd_get_dma_mr;
> -	dev->ibdev.reg_user_mr = hvnd_reg_user_mr;
> -	dev->ibdev.dereg_mr = hvnd_dereg_mr;
> -	dev->ibdev.alloc_mw = hvnd_alloc_mw;
> -	dev->ibdev.dealloc_mw = hvnd_dealloc_mw;
> -	dev->ibdev.attach_mcast = hvnd_multicast_attach;
> -	dev->ibdev.detach_mcast = hvnd_multicast_detach;
> -	dev->ibdev.process_mad = hvnd_process_mad;
> -	dev->ibdev.req_notify_cq = hvnd_arm_cq;
> -	dev->ibdev.post_send = hvnd_post_send;
> -	dev->ibdev.post_recv = hvnd_post_receive;
> -	dev->ibdev.uverbs_abi_ver = MLX4_IB_UVERBS_ABI_VERSION;
> -
> -	dev->ibdev.get_port_immutable = hvnd_get_port_immutable;
> -
> -	//DMA ops for mapping all possible addresses
> -	dev->ibdev.dev.parent = &(dev->hvdev->device);
> -	dev->ibdev.dev.dma_ops = &vmbus_dma_ops;
> -	dev->ibdev.dev.dma_mask = (u64 *) DMA_BIT_MASK(64);
> -	dev->ibdev.dev.coherent_dma_mask = DMA_BIT_MASK(64);
> -
> -	dev->ibdev.iwcm = kmalloc(sizeof(struct iw_cm_verbs), GFP_KERNEL);
> -	if (!dev->ibdev.iwcm)
> -		return -ENOMEM;
> -
> -	dev->ibdev.iwcm->connect = hvnd_connect;
> -	dev->ibdev.iwcm->accept = hvnd_accept_cr;
> -	dev->ibdev.iwcm->reject = hvnd_reject_cr;
> -	dev->ibdev.iwcm->create_listen = hvnd_create_listen;
> -	dev->ibdev.iwcm->destroy_listen = hvnd_destroy_listen;
> -	dev->ibdev.iwcm->add_ref = hvnd_qp_add_ref;
> -	dev->ibdev.iwcm->rem_ref = hvnd_qp_rem_ref;
> -	dev->ibdev.iwcm->get_qp = hvnd_get_qp;
> -
> -	strlcpy(dev->ibdev.name, "mlx4_%d", IB_DEVICE_NAME_MAX);
> -	ret = ib_register_device(&dev->ibdev, NULL);
> -	if (ret) {
> -		hvnd_error("ib_register_device failed ret=%d\n", ret);
> -		goto bail1;
> -	}
> -
> -#if 0
> -	for (i = 0; i < ARRAY_SIZE(hvnd_class_attributes); ++i) {
> -		ret = device_create_file(&dev->ibdev.dev,
> -					 hvnd_class_attributes[i]);
> -		if (ret) {
> -			hvnd_error("device_create_file failed ret=%d\n", ret);
> -			goto bail2;
> -		}
> -	}
> -#endif
> -
> -	dev->ib_active = true;
> -	return 0;
> -//bail2:
> -//	ib_unregister_device(&dev->ibdev);
> -bail1:
> -	kfree(dev->ibdev.iwcm);
> -	return ret;
> -}
> -
> -void hvnd_unregister_device(struct hvnd_dev *dev)
> -{
> -	int i;
> -
> -	for (i = 0; i < ARRAY_SIZE(hvnd_class_attributes); ++i)
> -		device_remove_file(&dev->ibdev.dev,
> -				   hvnd_class_attributes[i]);
> -	ib_unregister_device(&dev->ibdev);
> -	kfree(dev->ibdev.iwcm);
> -	ib_dealloc_device((struct ib_device *)dev);
> -}
> -
> -static int hvnd_try_bind_nic(unsigned char *mac, __be32 ip)
> -{
> -	int ret;
> -	struct hvnd_dev *nd_dev = g_nd_dev;
> -
> -	mutex_lock(&nd_dev->bind_mutex);
> -	if (nd_dev->bind_complete) {
> -		mutex_unlock(&nd_dev->bind_mutex);
> -		return 1;
> -	}
> -
> -	memcpy(nd_dev->mac_addr, mac, 6);
> -	*(__be32 *)(nd_dev->ip_addr) = ip;
> -
> -	/*
> -	 * Bind the NIC.
> -	 */
> -	hvnd_info("trying to bind to IP %pI4 MAC %pM\n",
> -		  nd_dev->ip_addr, nd_dev->mac_addr);
> -	ret = hvnd_bind_nic(nd_dev, false, nd_dev->ip_addr, nd_dev->mac_addr);
> -	if (ret || nd_dev->bind_pkt.pkt_hdr.status) {
> -		mutex_unlock(&nd_dev->bind_mutex);
> -		return 1;
> -	}
> -
> -	/* if we reach here, this means bind_nic is a success */
> -	hvnd_error("successfully bound to IP %pI4 MAC %pM\n",
> -		   nd_dev->ip_addr, nd_dev->mac_addr);
> -	complete(&nd_dev->addr_set);
> -	nd_dev->bind_complete = 1;
> -	mutex_unlock(&nd_dev->bind_mutex);
> -
> -	ret = hvnd_register_device(nd_dev, nd_dev->ip_addr, nd_dev->mac_addr);
> -
> -	if (!ret)
> -		return 0;
> -
> -	hvnd_error("hvnd_register_device failed ret=%d\n", ret);
> -
> -	/* roll back all allocated resources on error */
> -	iounmap(nd_dev->mmio_virt);
> -	release_resource(&nd_dev->mmio_resource);
> -
> -	vmbus_close(nd_dev->hvdev->channel);
> -	ib_dealloc_device((struct ib_device *)nd_dev);
> -
> -	return 1;
> -}
> -
> -static void hvnd_inetaddr_event_up(unsigned long event, struct in_ifaddr *ifa)
> -{
> -	hvnd_try_bind_nic(ifa->ifa_dev->dev->dev_addr, ifa->ifa_address);
> -}
> -
> -static int hvnd_inetaddr_event(struct notifier_block *notifier,
> -			       unsigned long event, void *ptr)
> -{
> -	struct in_ifaddr *ifa = ptr;
> -
> -	switch (event) {
> -	case NETDEV_UP:
> -		hvnd_inetaddr_event_up(event, ifa);
> -		break;
> -	default:
> -		hvnd_debug("Received inetaddr event %lu\n", event);
> -	}
> -
> -	return NOTIFY_DONE;
> -}
> -
> -static struct notifier_block hvnd_inetaddr_notifier = {
> -	.notifier_call = hvnd_inetaddr_event,
> -};
> -
> -static int start_bind_nic(void)
> -{
> -	struct net_device *dev;
> -	struct in_device *idev;
> -	struct in_ifaddr *ifa;
> -
> -	register_inetaddr_notifier(&hvnd_inetaddr_notifier);
> -
> -	rtnl_lock();
> -	for_each_netdev(&init_net, dev) {
> -		idev = in_dev_get(dev);
> -		if (!idev)
> -			continue;
> -		for (ifa = (idev)->ifa_list;
> -		     ifa && !(ifa->ifa_flags&IFA_F_SECONDARY);
> -		     ifa = ifa->ifa_next) {
> -			hvnd_try_bind_nic(dev->dev_addr, ifa->ifa_address);
> -		}
> -	}
> -	rtnl_unlock();
> -
> -	return 0;
> -}
> -
> -static int hvnd_probe(struct hv_device *dev,
> -		      const struct hv_vmbus_device_id *dev_id)
> -{
> -	struct hvnd_dev *nd_dev;
> -	int ret = 0;
> -
> -	hvnd_debug("hvnd starting\n");
> -
> -	nd_dev = (struct hvnd_dev *)ib_alloc_device(sizeof(struct hvnd_dev));
> -	if (!nd_dev) {
> -		ret = -ENOMEM;
> -		goto err_out0;
> -	}
> -
> -	nd_dev->hvdev = dev;
> -	/*
> -	 * We are going to masquerade as MLX4 device;
> -	 * Set the vendor and device ID accordingly.
> -	 */
> -	dev->vendor_id = 0x15b3; //Mellanox
> -	dev->device_id = 0x1003; //Mellanox HCA
> -	INIT_LIST_HEAD(&nd_dev->listentry);
> -	spin_lock_init(&nd_dev->uctxt_lk);
> -	nd_dev->ib_active = false;
> -
> -	/*
> -	 * Initialize the state for the id table.
> -	 */
> -	spin_lock_init(&nd_dev->id_lock);
> -	idr_init(&nd_dev->cqidr);
> -	idr_init(&nd_dev->qpidr);
> -	idr_init(&nd_dev->mmidr);
> -	idr_init(&nd_dev->irpidr);
> -	idr_init(&nd_dev->uctxidr);
> -
> -	atomic_set(&nd_dev->open_cnt, 0);
> -
> -	sema_init(&nd_dev->query_pkt_sem, 1);
> -
> -	ret = vmbus_open(dev->channel, HVND_RING_SZ, HVND_RING_SZ, NULL, 0,
> -			 hvnd_callback, dev);
> -
> -	if (ret) {
> -		hvnd_error("vmbus_open failed ret=%d\n", ret);
> -		goto err_out1;
> -	}
> -
> -	hv_set_drvdata(dev, nd_dev);
> -
> -	ret = hvnd_negotiate_version(nd_dev);
> -
> -	if (ret) {
> -		hvnd_error("hvnd_negotiate_version failed ret=%d\n", ret);
> -		goto err_out2;
> -	}
> -
> -	/*
> -	 * Register resources with the host.
> -	 */
> -	ret = hvnd_init_resources(nd_dev);
> -	if (ret) {
> -		hvnd_error("hvnd_init_resources failed ret=%d\n", ret);
> -		goto err_out2;
> -	}
> -
> -	/*
> -	 * Try to bind every NIC to ND channel,
> -	 * ND host will only return success for the correct one
> -	 */
> -	nd_dev->bind_complete = 0;
> -	mutex_init(&nd_dev->bind_mutex);
> -	init_completion(&nd_dev->addr_set);
> -
> -	g_nd_dev = nd_dev;
> -	start_bind_nic();
> -
> -	return 0;
> -
> -err_out2:
> -	vmbus_close(dev->channel);
> -
> -err_out1:
> -	ib_dealloc_device((struct ib_device *)nd_dev);
> -
> -err_out0:
> -	return ret;
> -}
> -
> -static int hvnd_remove(struct hv_device *dev)
> -{
> -	struct hvnd_dev *nd_dev = hv_get_drvdata(dev);
> -
> -	unregister_inetaddr_notifier(&hvnd_inetaddr_notifier);
> -	hvnd_bind_nic(nd_dev, true, nd_dev->ip_addr, nd_dev->mac_addr);
> -	hvnd_unregister_device(nd_dev);
> -	vmbus_close(dev->channel);
> -	iounmap(nd_dev->mmio_virt);
> -	release_resource(&nd_dev->mmio_resource);
> -	return 0;
> -}
> -
> -static const struct hv_vmbus_device_id id_table[] = {
> -	/* VMBUS RDMA class guid */
> -	/* 8c2eaf3d-32a7-4b09-ab99-bd1f1c86b501 */
> -	{ HV_ND_GUID, },
> -	{ },
> -};
> -
> -MODULE_DEVICE_TABLE(vmbus, id_table);
> -
> -static  struct hv_driver hvnd_drv = {
> -	.name = "hv_guest_rdma",
> -	.id_table = id_table,
> -	.probe =  hvnd_probe,
> -	.remove =  hvnd_remove,
> -};
> -
> -
> -static int __init init_hvnd_drv(void)
> -{
> -
> -	pr_info("Registered HyperV networkDirect Driver\n");
> -	hvnd_addr_init();
> -	return vmbus_driver_register(&hvnd_drv);
> -}
> -
> -static void exit_hvnd_drv(void)
> -{
> -	pr_info("De-Registered HyperV networkDirect Driver\n");
> -	hvnd_addr_deinit();
> -	vmbus_driver_unregister(&hvnd_drv);
> -}
> -
> -
> -module_init(init_hvnd_drv);
> -module_exit(exit_hvnd_drv);
> -
> -MODULE_DESCRIPTION("Hyper-V NetworkDirect Driver");
> -MODULE_LICENSE("GPL");
> -MODULE_VERSION("4.1.3");
> diff --git a/drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142/user.h b/drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142/user.h
> deleted file mode 100644
> index 07e6769ef43b..000000000000
> --- a/drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142/user.h
> +++ /dev/null
> @@ -1,107 +0,0 @@
> -/*
> - * Copyright (c) 2007 Cisco Systems, Inc. All rights reserved.
> - * Copyright (c) 2007, 2008 Mellanox Technologies. All rights reserved.
> - *
> - * This software is available to you under a choice of one of two
> - * licenses.  You may choose to be licensed under the terms of the GNU
> - * General Public License (GPL) Version 2, available from the file
> - * COPYING in the main directory of this source tree, or the
> - * OpenIB.org BSD license below:
> - *
> - *     Redistribution and use in source and binary forms, with or
> - *     without modification, are permitted provided that the following
> - *     conditions are met:
> - *
> - *      - Redistributions of source code must retain the above
> - *        copyright notice, this list of conditions and the following
> - *        disclaimer.
> - *
> - *      - Redistributions in binary form must reproduce the above
> - *        copyright notice, this list of conditions and the following
> - *        disclaimer in the documentation and/or other materials
> - *        provided with the distribution.
> - *
> - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
> - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
> - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
> - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
> - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
> - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
> - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
> - * SOFTWARE.
> - */
> -
> -#ifndef MLX4_IB_USER_H
> -#define MLX4_IB_USER_H
> -
> -#include <linux/types.h>
> -
> -/*
> - * Increment this value if any changes that break userspace ABI
> - * compatibility are made.
> - */
> -
> -#define MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION	3
> -#define MLX4_IB_UVERBS_ABI_VERSION		4
> -
> -/*
> - * Make sure that all structs defined in this file remain laid out so
> - * that they pack the same way on 32-bit and 64-bit architectures (to
> - * avoid incompatibility between 32-bit userspace and 64-bit kernels).
> - * In particular do not use pointer types -- pass pointers in __u64
> - * instead.
> - */
> -
> -struct mlx4_ib_alloc_ucontext_resp_v3 {
> -	__u32	qp_tab_size;
> -	__u16	bf_reg_size;
> -	__u16	bf_regs_per_page;
> -};
> -
> -struct mlx4_ib_alloc_ucontext_resp {
> -	__u32	dev_caps;
> -	__u32	qp_tab_size;
> -	__u16	bf_reg_size;
> -	__u16	bf_regs_per_page;
> -	__u32	cqe_size;
> -};
> -
> -struct mlx4_ib_alloc_pd_resp {
> -	__u32	pdn;
> -	__u32	reserved;
> -};
> -
> -struct mlx4_ib_create_cq {
> -	__u64	buf_addr;
> -	__u64	db_addr;
> -};
> -
> -struct mlx4_ib_create_cq_resp {
> -	__u32	cqn;
> -	__u32	reserved;
> -};
> -
> -struct mlx4_ib_resize_cq {
> -	__u64	buf_addr;
> -};
> -
> -struct mlx4_ib_create_srq {
> -	__u64	buf_addr;
> -	__u64	db_addr;
> -};
> -
> -struct mlx4_ib_create_srq_resp {
> -	__u32	srqn;
> -	__u32	reserved;
> -};
> -
> -struct mlx4_ib_create_qp {
> -	__u64	buf_addr;
> -	__u64	db_addr;
> -	__u8	log_sq_bb_count;
> -	__u8	log_sq_stride;
> -	__u8	sq_no_prefetch;
> -	__u8	reserved[5];
> -};
> -
> -#endif /* MLX4_IB_USER_H */
> diff --git a/drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142/vmbus_rdma.c b/drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142/vmbus_rdma.c
> deleted file mode 100644
> index daf68dcccb1b..000000000000
> --- a/drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142/vmbus_rdma.c
> +++ /dev/null
> @@ -1,3074 +0,0 @@
> -/*
> - * Copyright (c) 2014, Microsoft Corporation.
> - *
> - * Author:
> - *   K. Y. Srinivasan <kys@microsoft.com>
> - *
> - * This program is free software; you can redistribute it and/or modify it
> - * under the terms of the GNU General Public License version 2 as published
> - * by the Free Software Foundation.
> - *
> - * This program is distributed in the hope that it will be useful, but
> - * WITHOUT ANY WARRANTY; without even the implied warranty of
> - * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
> - * NON INFRINGEMENT.  See the GNU General Public License for more
> - * details.
> - *
> - * Bug fixes/enhancements: Long Li <longli@microsoft.com>
> - */
> -
> -#include <linux/completion.h>
> -#include <linux/module.h>
> -#include <linux/errno.h>
> -#include <linux/hyperv.h>
> -#include <linux/efi.h>
> -#include <linux/slab.h>
> -#include <linux/cred.h>
> -#include <linux/sched.h>
> -#include <linux/types.h>
> -#include <linux/scatterlist.h>
> -#include <rdma/ib_umem.h>
> -#include <rdma/ib_user_verbs.h>
> -#include <asm-generic/delay.h>
> -
> -#include "vmbus_rdma.h"
> -
> -/*
> - * We only have a single rdma device on the host;
> - * have a single receive buffer.
> - */
> -
> -
> -static char hvnd_recv_buffer[PAGE_SIZE * 4];
> -
> -static atomic_t irp_local_hdl;
> -
> -char *hvnd_get_op_name(int ioctl)
> -{
> -	switch (ioctl) {
> -	case IOCTL_ND_PROVIDER_INIT:
> -		return "IOCTL_ND_PROVIDER_INIT\n";
> -	case IOCTL_ND_PROVIDER_BIND_FILE:
> -		return "IOCTL_ND_PROVIDER_BIND_FILE\n";
> -	case IOCTL_ND_ADAPTER_OPEN:
> -		return "IOCTL_ND_ADAPTER_OPEN\n";
> -
> -	case IOCTL_ND_ADAPTER_CLOSE:
> -		return "IOCTL_ND_ADAPTER_CLOSE\n";
> -
> -	case IOCTL_ND_ADAPTER_QUERY:
> -		return "IOCTL_ND_ADAPTER_QUERY\n";
> -
> -	case IOCTL_ND_PD_CREATE:
> -		return "IOCTL_ND_PD_CREATE\n";
> -
> -	case IOCTL_ND_PD_FREE:
> -		return "IOCTL_ND_PD_FREE\n";
> -
> -	case IOCTL_ND_CQ_CREATE:
> -		return "IOCTL_ND_CQ_CREATE\n";
> -
> -	case IOCTL_ND_CQ_FREE:
> -		return "IOCTL_ND_CQ_FREE\n";
> -	case IOCTL_ND_CQ_CANCEL_IO:
> -		return "IOCTL_ND_CQ_CANCEL_IO\n";
> -	case IOCTL_ND_CQ_GET_AFFINITY:
> -		return "IOCTL_ND_CQ_GET_AAFINITY\n";
> -	case IOCTL_ND_CQ_MODIFY:
> -		return "IOCTL_ND_CQ_MODIFY\n";
> -
> -	case IOCTL_ND_CQ_NOTIFY:
> -		return "IOCTL_ND_CQ_NOTIFY\n";
> -
> -
> -	case IOCTL_ND_LISTENER_CREATE:
> -		return "IOCTL_ND_LISTENER_CREATE\n";
> -
> -	case IOCTL_ND_LISTENER_FREE:
> -		return "IOCTL_ND_LISTENER_FREE\n";
> -
> -	case IOCTL_ND_QP_FREE:
> -		return "IOCTL_ND_QP_FREE\n";
> -
> -	case IOCTL_ND_CONNECTOR_CANCEL_IO:
> -		return "IOCTL_ND_CONNECTOR_CANCEL_IO\n";
> -
> -	case IOCTL_ND_LISTENER_CANCEL_IO:
> -		return "IOCTL_ND_LISTENER_CANCEL_IO\n";
> -
> -	case IOCTL_ND_LISTENER_BIND:
> -		return "IOCTL_ND_LISTENER_BIND\n";
> -
> -	case IOCTL_ND_LISTENER_LISTEN:
> -		return "IOCTL_ND_LISTENER_LISTEN\n";
> -
> -	case IOCTL_ND_LISTENER_GET_ADDRESS:
> -		return "IOCTL_ND_LISTENER_GET_ADDRESS\n";
> -
> -	case IOCTL_ND_LISTENER_GET_CONNECTION_REQUEST:
> -		return "IOCTL_ND_LISTENER_GET_CONNECTION_REQUEST\n";
> -
> -
> -
> -	case IOCTL_ND_CONNECTOR_CREATE:
> -		return "IOCTL_ND_CONNECTOR_CREATE\n";
> -
> -	case IOCTL_ND_CONNECTOR_FREE:
> -		return "IOCTL_ND_CONNECTOR_FREE\n";
> -
> -	case IOCTL_ND_CONNECTOR_BIND:
> -		return "IOCTL_ND_CONNECTOR_BIND\n";
> -
> -	// KYS: ALERT: ASYNCH Operation
> -	case IOCTL_ND_CONNECTOR_CONNECT:
> -		return "IOCTL_ND_CONNECTOR_CONNECT\n";
> -
> -	case IOCTL_ND_CONNECTOR_COMPLETE_CONNECT:
> -		return "IOCTL_ND_CONNECTOR_COMPLETE_CONNECT\n";
> -
> -	// KYS: ALERT: ASYNCH Operation
> -	case IOCTL_ND_CONNECTOR_ACCEPT:
> -		return "IOCTL_ND_CONNECTOR_ACCEPT\n";
> -
> -	case IOCTL_ND_CONNECTOR_REJECT:
> -		return "IOCTL_ND_CONNECTOR_REJECT\n";
> -
> -	case IOCTL_ND_CONNECTOR_GET_READ_LIMITS:
> -		return "IOCTL_ND_CONNECTOR_GET_READ_LIMITS\n";
> -
> -	case IOCTL_ND_CONNECTOR_GET_PRIVATE_DATA:
> -		return "IOCTL_ND_CONNECTOR_GET_PRIVATE_DATA\n";
> -
> -	case IOCTL_ND_CONNECTOR_GET_PEER_ADDRESS:
> -		return "IOCTL_ND_CONNECTOR_GET_PEER_ADDRESS\n";
> -
> -	case IOCTL_ND_CONNECTOR_GET_ADDRESS:
> -		return "IOCTL_ND_CONNECTOR_GET_ADDRESS\n";
> -
> -	// KYS: ALERT: ASYNCH Operation
> -	case IOCTL_ND_CONNECTOR_NOTIFY_DISCONNECT:
> -		return "IOCTL_ND_CONNECTOR_NOTIFY_DISCONNECT\n";
> -
> -	// KYS: ALERT: ASYNCH Operation
> -	case IOCTL_ND_CONNECTOR_DISCONNECT:
> -		return "IOCTL_ND_CONNECTOR_DISCONNECT\n";
> -
> -
> -
> -	case IOCTL_ND_QP_CREATE:
> -		return "IOCTL_ND_QP_CREATE\n";
> -
> -	case IOCTL_ND_MR_CREATE:
> -		return "IOCTL_ND_MR_CREATE\n";
> -
> -	case IOCTL_ND_MR_FREE:
> -		return "IOCTL_ND_MR_FREE\n";
> -	case IOCTL_ND_MR_REGISTER:
> -		return "IOCTL_ND_MR_REGISTER\n";
> -	case IOCTL_ND_MR_DEREGISTER:
> -		return "IOCTL_ND_MR_DEREGISTER\n";
> -	case IOCTL_ND_MR_CANCEL_IO:
> -		return "IOCTL_ND_MR_CANCEL_IO\n";
> -	case IOCTL_ND_ADAPTER_QUERY_ADDRESS_LIST:
> -		return "IOCTL_ND_ADAPTER_QUERY_ADDRESS_LIST\n";
> -	case IOCTL_ND_QP_FLUSH:
> -		return "IOCTL_ND_QP_FLUSH\n";
> -
> -	default:
> -		return "Unknown IOCTL\n";
> -	}
> -}
> -int get_irp_handle(struct hvnd_dev *nd_dev, u32 *local, void *irp_ctx)
> -{
> -	unsigned int local_handle;
> -	int ret;
> -
> -	local_handle = atomic_inc_return(&irp_local_hdl);
> -	*local = local_handle;
> -
> -	/*
> -	 * Now asssociate the local handle with the pointer.
> -	 */
> -	ret = insert_handle(nd_dev, &nd_dev->irpidr, irp_ctx, local_handle);
> -	hvnd_debug("irp_ctx=%p local_handle=%u\n", irp_ctx, local_handle);
> -
> -	if (ret) {
> -		hvnd_error("insert_handle failed ret=%d\n", ret);
> -		return ret;
> -	}
> -
> -	return 0;
> -}
> -
> -void put_irp_handle(struct hvnd_dev *nd_dev, u32 irp)
> -{
> -	remove_handle(nd_dev, &nd_dev->irpidr, irp);
> -
> -}
> -
> -static void init_pfn(u64 *pfn, void *addr, u32 length)
> -{
> -	int i;
> -	u32 offset = offset_in_page(addr);
> -	u32 num_pfn = DIV_ROUND_UP(offset + length, PAGE_SIZE);
> -
> -	for (i = 0; i < num_pfn; i++)
> -		pfn[i] = virt_to_phys((u8 *)addr +
> -				      (PAGE_SIZE * i)) >> PAGE_SHIFT;
> -}
> -
> -
> -static void user_va_init_pfn(u64 *pfn, struct ib_umem *umem)
> -{
> -	int entry;
> -	struct scatterlist *sg;
> -	int i = 0;
> -
> -	for_each_sg(umem->sg_head.sgl, sg, umem->nmap, entry) {
> -		pfn[i++] = page_to_pfn(sg_page(sg));
> -	}
> -}
> -
> -static u32 get_local_handle(void *p)
> -{
> -	u64 val = (unsigned long)p;
> -
> -	return (u32)val;
> -}
> -
> -static int hvnd_send_pg_buffer(struct hvnd_dev *nd_dev,
> -				struct vmbus_packet_mpb_array *desc,
> -				u32 desc_size,
> -				void *buffer,
> -				u32 bufferlen, u64 cookie)
> -{
> -	int ret;
> -	int t;
> -	struct hvnd_cookie hvnd_cookie;
> -
> -	hvnd_cookie.pkt = (void *)cookie;
> -	init_completion(&hvnd_cookie.host_event);
> -
> -	ret = vmbus_sendpacket_mpb_desc(nd_dev->hvdev->channel,
> -					desc,
> -					desc_size,
> -					buffer, bufferlen,
> -					(u64)(&hvnd_cookie));
> -
> -	if (ret) {
> -		hvnd_error("vmbus_sendpacket_mpb_desc failed ret=%d\n", ret);
> -		goto err;
> -	}
> -
> -	t = wait_for_completion_timeout(&hvnd_cookie.host_event, 500*HZ);
> -
> -	if (t == 0) {
> -		hvnd_error("wait_for_completion_timeout timed out\n");
> -		ret = -ETIMEDOUT;
> -	}
> -
> -err:
> -	return ret;
> -}
> -
> -static int hvnd_send_packet(struct hvnd_dev *nd_dev, void *buffer,
> -			    u32 bufferlen, u64 cookie, bool block)
> -{
> -	int ret;
> -	int t;
> -	struct hvnd_cookie hvnd_cookie;
> -
> -	hvnd_cookie.pkt = (void *)cookie;
> -	init_completion(&hvnd_cookie.host_event);
> -
> -	ret = vmbus_sendpacket(nd_dev->hvdev->channel, buffer, bufferlen,
> -			       (u64)(&hvnd_cookie), VM_PKT_DATA_INBAND,
> -			       VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED);
> -
> -	if (ret) {
> -		hvnd_error("vmbus_send pkt failed: %d\n", ret);
> -		goto err;
> -	}
> -
> -	if (!block)
> -		return ret;
> -
> -	t = wait_for_completion_timeout(&hvnd_cookie.host_event, 500*HZ);
> -
> -	if (t == 0) {
> -		hvnd_error("wait_for_completion_timeout timed out\n");
> -		ret = -ETIMEDOUT;
> -	}
> -
> -err:
> -	return ret;
> -}
> -
> -static int  hvnd_send_pgbuf_ioctl_pkt(struct hvnd_dev *nd_dev,
> -				struct vmbus_packet_mpb_array *desc,
> -				u32 desc_size,
> -				struct ndv_packet_hdr_control_1 *hdr,
> -				u32 pkt_size, u64 cookie)
> -{
> -	int ret;
> -	int ioctl;
> -
> -	ioctl = hdr->io_cntrl_code;
> -
> -
> -	ret = hvnd_send_pg_buffer(nd_dev, desc, desc_size,
> -				hdr, pkt_size, cookie);
> -
> -	if (ret)
> -		return ret;
> -
> -	if (hdr->pkt_hdr.status != 0) {
> -		hvnd_error("IOCTL: %s failed; status is %x\n",
> -			hvnd_get_op_name(ioctl),
> -			hdr->pkt_hdr.status);
> -		return -EINVAL;
> -	}
> -
> -	switch (hdr->io_status) {
> -	case STATUS_SUCCESS:
> -	case STATUS_PENDING:
> -		return 0;
> -
> -	default:
> -		hvnd_error("IOCTL: %s failed io status is %x\n",
> -			   hvnd_get_op_name(ioctl), hdr->io_status);
> -		return  -EINVAL;
> -	}
> -}
> -
> -int  hvnd_send_ioctl_pkt(struct hvnd_dev *nd_dev,
> -				struct ndv_packet_hdr_control_1 *hdr,
> -				u32 pkt_size, u64 cookie)
> -{
> -	int ret;
> -	int ioctl;
> -	bool block;
> -
> -	block = (hdr->irp_handle.val64 == 0) ? true : false;
> -
> -
> -	ioctl = hdr->io_cntrl_code;
> -
> -	ret = hvnd_send_packet(nd_dev, hdr, pkt_size, cookie, block);
> -
> -	if (ret)
> -		return ret;
> -
> -	if (!block)
> -		return ret;
> -
> -	if (hdr->pkt_hdr.status != 0) {
> -		hvnd_error("IOCTL: %s failed; status is %x\n",
> -			   hvnd_get_op_name(ioctl), hdr->pkt_hdr.status);
> -		return -EINVAL;
> -	}
> -
> -	switch (hdr->io_status) {
> -	case STATUS_SUCCESS:
> -	case STATUS_PENDING:
> -		return 0;
> -
> -	default:
> -		hvnd_warn("IOCTL: %s failed io status is %x\n",
> -			  hvnd_get_op_name(ioctl), hdr->io_status);
> -		return -EINVAL;
> -	}
> -}
> -
> -void hvnd_init_hdr(struct ndv_packet_hdr_control_1 *hdr,
> -			  u32 data_sz, u32 local, u32 remote,
> -			  u32 ioctl_code,
> -			  u32 ext_data_sz, u32 ext_data_offset,
> -			  u64 irp_handle)
> -
> -{
> -	int pkt_type;
> -
> -	pkt_type = NDV_PKT_ID1_CONTROL;
> -	NDV_ADD_PACKET_OPTION(pkt_type, NDV_PACKET_OPTIONS_REQUIRES_PASSIVE);
> -	hdr->pkt_hdr.packet_type = pkt_type;
> -	hdr->pkt_hdr.hdr_sz = sizeof(struct ndv_packet_hdr_control_1);
> -	hdr->pkt_hdr.data_sz = data_sz;
> -
> -	hdr->pkt_hdr.status = 0;
> -
> -	hdr->file_handle.local = local;
> -	hdr->file_handle.remote = remote;
> -	hdr->irp_handle.val64 = irp_handle;
> -
> -	hdr->io_cntrl_code = ioctl_code;
> -	hdr->output_buf_sz = data_sz - ext_data_sz;
> -	hdr->input_buf_sz = data_sz - ext_data_sz;
> -
> -	hdr->input_output_buf_offset = 0;
> -
> -	hdr->extended_data.size = ext_data_sz;
> -	hdr->extended_data.offset = ext_data_offset;
> -}
> -
> -
> -int hvnd_create_file(struct hvnd_dev *nd_dev, void  *uctx,
> -		     struct ndv_pkt_hdr_create_1 *create, u32 file_flags)
> -{
> -	int ret;
> -	int pkt_type;
> -
> -
> -	pkt_type = NDV_PKT_ID1_CREATE;
> -	NDV_ADD_PACKET_OPTION(pkt_type, NDV_PACKET_OPTIONS_REQUIRES_PASSIVE);
> -	create->pkt_hdr.packet_type = pkt_type;
> -	create->pkt_hdr.hdr_sz = sizeof(struct ndv_pkt_hdr_create_1);
> -	create->pkt_hdr.data_sz = 0;
> -
> -	create->handle.local = get_local_handle(uctx);
> -	create->access_mask = STANDARD_RIGHTS_ALL;
> -	create->open_options = OPEN_EXISTING;
> -	create->file_attributes = FILE_ATTRIBUTE_NORMAL | file_flags;
> -	create->share_access = FILE_SHARE_ALL;
> -
> -	ret = hvnd_send_packet(nd_dev, create,
> -			       sizeof(struct ndv_pkt_hdr_create_1),
> -			       (unsigned long)create, true);
> -	return ret;
> -}
> -
> -int hvnd_cleanup_file(struct hvnd_dev *nd_dev, u32 local, u32 remote)
> -{
> -	int ret;
> -	int pkt_type;
> -	struct ndv_pkt_hdr_cleanup_1 cleanup_pkt;
> -
> -
> -	pkt_type = NDV_PKT_ID1_CLEANUP;
> -	NDV_ADD_PACKET_OPTION(pkt_type, NDV_PACKET_OPTIONS_REQUIRES_PASSIVE);
> -
> -	cleanup_pkt.pkt_hdr.packet_type = pkt_type;
> -	cleanup_pkt.pkt_hdr.hdr_sz = sizeof(struct ndv_pkt_hdr_create_1);
> -	cleanup_pkt.pkt_hdr.data_sz = 0;
> -
> -	cleanup_pkt.handle.local = local;
> -	cleanup_pkt.handle.remote = remote;
> -
> -	ret = hvnd_send_packet(nd_dev, &cleanup_pkt,
> -			       sizeof(struct ndv_pkt_hdr_create_1),
> -			       (unsigned long)&cleanup_pkt, true);
> -	return ret;
> -}
> -
> -
> -static int  hvnd_do_ioctl(struct hvnd_dev *nd_dev, u32 ioctl,
> -		     struct pkt_nd_provider_ioctl *pkt,
> -		     union ndv_context_handle *hdr_handle,
> -		     struct nd_handle  *ioctl_handle,
> -		     u8 *buf, u32 buf_len, bool c_in, bool c_out, u64 irp_val)
> -{
> -	int ret;
> -	int pkt_type;
> -
> -	pkt_type = NDV_PKT_ID1_CONTROL;
> -	NDV_ADD_PACKET_OPTION(pkt_type, NDV_PACKET_OPTIONS_REQUIRES_PASSIVE);
> -
> -	pkt->hdr.pkt_hdr.packet_type = pkt_type;
> -	pkt->hdr.pkt_hdr.hdr_sz = sizeof(struct ndv_packet_hdr_control_1);
> -	pkt->hdr.pkt_hdr.data_sz = (sizeof(struct pkt_nd_provider_ioctl) -
> -				    sizeof(struct ndv_packet_hdr_control_1));
> -
> -	pkt->hdr.file_handle.local = hdr_handle->local;
> -	pkt->hdr.file_handle.remote = hdr_handle->remote;
> -	hvnd_debug("create handle local: %x remote: %x\n",
> -		   hdr_handle->local, hdr_handle->remote);
> -
> -	pkt->hdr.irp_handle.val64 = irp_val;
> -
> -	pkt->hdr.io_cntrl_code = ioctl;
> -	pkt->hdr.output_buf_sz = sizeof(struct nd_ioctl);
> -	pkt->hdr.input_buf_sz = sizeof(struct nd_ioctl);
> -	pkt->hdr.input_output_buf_offset = 0;
> -	memset(&pkt->ioctl.handle, 0, sizeof(struct nd_handle));
> -	pkt->ioctl.handle.version = ND_VERSION_1;
> -
> -	switch (ioctl) {
> -	case IOCTL_ND_PROVIDER_BIND_FILE:
> -		pkt->ioctl.handle.handle = ioctl_handle->handle;
> -		break;
> -	default:
> -		break;
> -	};
> -
> -	/*
> -	 * Copy the input buffer, if needed.
> -	 */
> -
> -	if (c_in && (buf != NULL))
> -		memcpy(pkt->ioctl.raw_buffer, buf, buf_len);
> -
> -	ret = hvnd_send_packet(nd_dev, pkt,
> -			       sizeof(struct pkt_nd_provider_ioctl),
> -			       (unsigned long)pkt, true);
> -
> -	if (ret)
> -		return ret;
> -
> -	if (c_out && (buf != NULL))
> -		memcpy(buf, pkt->ioctl.raw_buffer, buf_len);
> -
> -	return ret;
> -}
> -
> -static int idr_callback(int id, void *p, void *data)
> -{
> -	if (p == data)
> -		return id;
> -	return 0;
> -}
> -
> -void remove_uctx(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx)
> -{
> -	int pid = current_pid();
> -	unsigned long flags;
> -	int id;
> -
> -	if (get_uctx(nd_dev, pid) == uctx)
> -		remove_handle(nd_dev, &nd_dev->uctxidr, pid);
> -	else {
> -		hvnd_warn("uctx %p not found on pid %d, doing a idr search\n",
> -			  uctx, current_pid());
> -
> -		spin_lock_irqsave(&nd_dev->id_lock, flags);
> -		id = idr_for_each(&nd_dev->uctxidr, idr_callback, uctx);
> -		spin_unlock_irqrestore(&nd_dev->id_lock, flags);
> -
> -		if (id)
> -			remove_handle(nd_dev, &nd_dev->uctxidr, id);
> -		else {
> -			hvnd_error("uctx %p not found in idr table\n", uctx);
> -			return;
> -		}
> -	}
> -
> -	kfree(uctx);
> -}
> -
> -int hvnd_close_adaptor(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx)
> -{
> -	int ret;
> -
> -	/*
> -	 * First close the adaptor.
> -	 */
> -
> -	ret = hvnd_free_handle(nd_dev, uctx,
> -				uctx->adaptor_hdl,
> -				IOCTL_ND_ADAPTER_CLOSE);
> -
> -	if (ret)
> -		hvnd_error("Adaptor close failed; ret is %x\n", ret);
> -
> -	/*
> -	 * Now close the two files we created.
> -	 */
> -
> -	ret = hvnd_cleanup_file(nd_dev, uctx->file_handle_ovl.local,
> -				uctx->file_handle_ovl.remote);
> -
> -	if (ret)
> -		hvnd_error("file cleanup failed; ret is %x\n", ret);
> -
> -	ret = hvnd_cleanup_file(nd_dev, uctx->file_handle.local,
> -				uctx->file_handle.remote);
> -
> -	if (ret)
> -		hvnd_error("File cleanup failed; ret is %x\n", ret);
> -
> -	/*
> -	 * Remove the uctx from the ID table.
> -	 */
> -	remove_uctx(nd_dev, uctx);
> -
> -	return 0;
> -}
> -
> -int hvnd_open_adaptor(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx)
> -{
> -	int ret;
> -	struct pkt_nd_provider_ioctl *pr_init = &uctx->pr_init_pkt;
> -	int pkt_type;
> -	struct nd_handle ioctl_handle;
> -	struct pkt_nd_open_adapter *pr_o_adap = &uctx->o_adap_pkt;
> -
> -	ret = hvnd_create_file(nd_dev, uctx, &uctx->create_pkt, 0);
> -	if (ret) {
> -		hvnd_error("hvnd_create_file failed ret=%d\n", ret);
> -		goto error_cr;
> -	}
> -
> -	if (uctx->create_pkt.pkt_hdr.status != 0) {
> -		hvnd_error("create File failed; status is %d\n",
> -			uctx->create_pkt.pkt_hdr.status);
> -		ret = -EINVAL;
> -		goto error_cr;
> -	}
> -
> -	uctx->file_handle.local = uctx->create_pkt.handle.local;
> -	uctx->file_handle.remote = uctx->create_pkt.handle.remote;
> -	hvnd_debug("INITIALIZE PROVIDER\n");
> -	/*
> -	 * Now Initialize the Provider.
> -	 */
> -	ioctl_handle.handle = 0;
> -	ret = hvnd_do_ioctl(nd_dev, IOCTL_ND_PROVIDER_INIT, pr_init,
> -			    &uctx->create_pkt.handle,
> -			    &ioctl_handle, NULL, 0, false, false, 0);
> -
> -	if (ret) {
> -		ret = -EINVAL;
> -		goto error_pr_init;
> -	}
> -
> -	if (pr_init->hdr.pkt_hdr.status != 0) {
> -		hvnd_error("Provider INIT failed; status is %d\n",
> -			pr_init->hdr.pkt_hdr.status);
> -		ret = -EINVAL;
> -		goto error_pr_init;
> -	}
> -
> -	if (pr_init->hdr.io_status != 0) {
> -		hvnd_error("Provider INIT failed; io status is %d\n",
> -			pr_init->hdr.io_status);
> -		ret = -EINVAL;
> -		goto error_pr_init;
> -	}
> -
> -	/*
> -	 * Now create the overlap file.
> -	 */
> -
> -	hvnd_debug("CREATE OVERLAP FILE\n");
> -	ret = hvnd_create_file(nd_dev, uctx, &uctx->create_pkt_ovl,
> -			       FILE_FLAG_OVERLAPPED);
> -	if (ret) {
> -		hvnd_error("hvnd_create_file failed ret=%d\n", ret);
> -		goto error_pr_init;
> -	}
> -
> -	if (uctx->create_pkt_ovl.pkt_hdr.status != 0) {
> -		hvnd_error("create Overlap File failed; status is %d\n",
> -			uctx->create_pkt_ovl.pkt_hdr.status);
> -		ret = -EINVAL;
> -		goto error_pr_init;
> -	}
> -	uctx->file_handle_ovl.local = uctx->create_pkt_ovl.handle.local;
> -	uctx->file_handle_ovl.remote = uctx->create_pkt_ovl.handle.remote;
> -
> -	/*
> -	 * Now bind the two file handles together.
> -	 */
> -
> -	hvnd_debug("BIND FILE IOCTL remote handle: %d local handle: %d\n",
> -		uctx->create_pkt_ovl.handle.remote,
> -		uctx->create_pkt_ovl.handle.local);
> -
> -	ioctl_handle.handle = uctx->create_pkt_ovl.handle.val64;
> -	ret = hvnd_do_ioctl(nd_dev, IOCTL_ND_PROVIDER_BIND_FILE, pr_init,
> -			    &uctx->create_pkt.handle,
> -			    &ioctl_handle, NULL, 0, false, false, 0);
> -
> -	if (ret) {
> -		ret = -EINVAL;
> -		goto error_file_bind;
> -	}
> -	if (pr_init->hdr.pkt_hdr.status != 0) {
> -		hvnd_error("Provider File bind failed; status is %d\n",
> -			pr_init->hdr.pkt_hdr.status);
> -		ret = -EINVAL;
> -		goto error_file_bind;
> -	}
> -	if (pr_init->hdr.io_status != 0) {
> -		hvnd_error("Provider INIT failed; io status is %d\n",
> -			pr_init->hdr.io_status);
> -		ret = -EINVAL;
> -		goto error_file_bind;
> -	}
> -
> -	/*
> -	 * Now open the adaptor.
> -	 */
> -
> -	hvnd_debug("OPENING THE ADAPTOR\n");
> -
> -	pkt_type = NDV_PKT_ID1_CONTROL;
> -	NDV_ADD_PACKET_OPTION(pkt_type, NDV_PACKET_OPTIONS_REQUIRES_PASSIVE);
> -	pr_o_adap->hdr.pkt_hdr.packet_type = pkt_type;
> -	pr_o_adap->hdr.pkt_hdr.hdr_sz = sizeof(struct ndv_packet_hdr_control_1);
> -	pr_o_adap->hdr.pkt_hdr.data_sz = sizeof(struct pkt_nd_open_adapter) -
> -		sizeof(struct ndv_packet_hdr_control_1);
> -
> -	pr_o_adap->hdr.pkt_hdr.status = 0;
> -
> -	hvnd_debug("hdr sz is %d\n", pr_o_adap->hdr.pkt_hdr.hdr_sz);
> -	hvnd_debug("data sz is %d\n", pr_o_adap->hdr.pkt_hdr.data_sz);
> -
> -	pr_o_adap->hdr.file_handle.local = uctx->create_pkt.handle.local;
> -	pr_o_adap->hdr.file_handle.remote = uctx->create_pkt.handle.remote;
> -	hvnd_debug("create handle local is %x\n",
> -		   uctx->create_pkt.handle.local);
> -	hvnd_debug("create handle remote is %x\n",
> -		   uctx->create_pkt.handle.remote);
> -	pr_o_adap->hdr.irp_handle.val64 = 0;
> -
> -	pr_o_adap->hdr.io_cntrl_code = IOCTL_ND_ADAPTER_OPEN;
> -	pr_o_adap->hdr.output_buf_sz = pr_o_adap->hdr.pkt_hdr.data_sz -
> -		sizeof(struct extended_data_oad);
> -	pr_o_adap->hdr.input_buf_sz = pr_o_adap->hdr.pkt_hdr.data_sz -
> -		sizeof(struct extended_data_oad);
> -
> -	hvnd_debug("output buf sz is %d\n", pr_o_adap->hdr.output_buf_sz);
> -	hvnd_debug("input buf sz is %d\n", pr_o_adap->hdr.input_buf_sz);
> -	hvnd_debug("packet size is %d\n",
> -		   (int)sizeof(struct pkt_nd_open_adapter));
> -
> -	pr_o_adap->hdr.input_output_buf_offset = 0;
> -
> -
> -	pr_o_adap->hdr.extended_data.size = sizeof(struct extended_data_oad);
> -	pr_o_adap->hdr.extended_data.offset =
> -		offsetof(struct pkt_nd_open_adapter, ext_data) -
> -		sizeof(struct ndv_packet_hdr_control_1);
> -
> -	hvnd_debug("size of the extended data size: %d\n",
> -		   (int)sizeof(struct extended_data_oad));
> -	hvnd_debug("offset of extended data: %d\n",
> -		   pr_o_adap->hdr.extended_data.offset);
> -
> -	/*
> -	 * Now fill out the ioctl section.
> -	 */
> -
> -	pr_o_adap->ioctl.input.version = ND_VERSION_1;
> -	pr_o_adap->ioctl.input.ce_mapping_cnt =
> -		RTL_NUMBER_OF(pr_o_adap->mappings.ctx_input.mappings);
> -
> -	hvnd_debug("ce_mapping cnt is %d\n",
> -		   pr_o_adap->ioctl.input.ce_mapping_cnt);
> -
> -	pr_o_adap->ioctl.input.cb_mapping_offset = sizeof(union oad_ioctl);
> -	hvnd_debug("cb_mapping offset is %d\n",
> -		   pr_o_adap->ioctl.input.cb_mapping_offset);
> -	pr_o_adap->ioctl.input.adapter_id = (u64)nd_dev;
> -
> -	pr_o_adap->mappings.ctx_input.mappings[IBV_GET_CONTEXT_UAR].map_type = ND_MAP_IOSPACE;
> -	pr_o_adap->mappings.ctx_input.mappings[IBV_GET_CONTEXT_UAR].map_io_space.cache_type = ND_NON_CACHED;
> -	pr_o_adap->mappings.ctx_input.mappings[IBV_GET_CONTEXT_UAR].map_io_space.cb_length = 4096;
> -
> -	pr_o_adap->mappings.ctx_input.mappings[IBV_GET_CONTEXT_BF].map_type  = ND_MAP_IOSPACE;
> -	pr_o_adap->mappings.ctx_input.mappings[IBV_GET_CONTEXT_BF].map_io_space.cache_type = ND_WRITE_COMBINED;
> -	pr_o_adap->mappings.ctx_input.mappings[IBV_GET_CONTEXT_BF].map_io_space.cb_length = 4096;
> -
> -	/*
> -	 * Fill in the extended data.
> -	 */
> -	pr_o_adap->ext_data.cnt = IBV_GET_CONTEXT_MAPPING_MAX;
> -
> -	ret = hvnd_send_packet(nd_dev, pr_o_adap,
> -			       sizeof(struct pkt_nd_open_adapter),
> -			       (unsigned long)pr_o_adap, true);
> -	if (ret) {
> -		ret = -EINVAL;
> -		goto error_file_bind;
> -	}
> -
> -	if (pr_o_adap->hdr.pkt_hdr.status != 0) {
> -		hvnd_error("Open adaptor failed; status is %d\n",
> -			pr_o_adap->hdr.pkt_hdr.status);
> -		ret = -EINVAL;
> -		goto error_file_bind;
> -	}
> -
> -	if (pr_o_adap->hdr.io_status != 0) {
> -		hvnd_error("Open adaptor failed;io status is %d\n",
> -			pr_o_adap->hdr.io_status);
> -		ret = -EINVAL;
> -		goto error_file_bind;
> -	}
> -
> -	/*
> -	 * Copy the necessary response from the host.
> -	 */
> -
> -	uctx->adaptor_hdl = pr_o_adap->ioctl.resrc_desc.handle;
> -
> -
> -	hvnd_debug("adaptor handle: %p\n", (void *)uctx->adaptor_hdl);
> -
> -	uctx->uar_base =
> -	pr_o_adap->mappings.ctx_output.mapping_results[IBV_GET_CONTEXT_UAR].info;
> -	hvnd_debug("uar base: %p\n", (void *)uctx->uar_base);
> -
> -	uctx->bf_base =
> -	pr_o_adap->mappings.ctx_output.mapping_results[IBV_GET_CONTEXT_BF].info;
> -	hvnd_debug("bf base: %p\n", (void *)uctx->bf_base);
> -
> -	uctx->bf_buf_size =
> -	pr_o_adap->mappings.ctx_output.bf_buf_size;
> -	hvnd_debug("bf buf size: %d\n", uctx->bf_buf_size);
> -
> -	uctx->bf_offset =
> -	pr_o_adap->mappings.ctx_output.bf_offset;
> -	hvnd_debug("bf offset: %d\n", uctx->bf_offset);
> -
> -	uctx->cqe_size =
> -	pr_o_adap->mappings.ctx_output.cqe_size;
> -	hvnd_debug("cqe size: %d\n", uctx->cqe_size);
> -
> -	uctx->max_qp_wr =
> -	pr_o_adap->mappings.ctx_output.max_qp_wr;
> -	hvnd_debug("max qp wr: %d\n", uctx->max_qp_wr);
> -
> -	uctx->max_sge =
> -	pr_o_adap->mappings.ctx_output.max_sge;
> -	hvnd_debug("max sge: %d\n", uctx->max_sge);
> -
> -	uctx->max_cqe =
> -	pr_o_adap->mappings.ctx_output.max_cqe;
> -	hvnd_debug("max cqe: %d\n", uctx->max_cqe);
> -
> -	uctx->num_qps =
> -	pr_o_adap->mappings.ctx_output.qp_tab_size;
> -	hvnd_debug("num qps: %d\n", uctx->num_qps);
> -
> -	/*
> -	 * Now query the adaptor and stash away the adaptor info.
> -	 */
> -
> -	ret = hvnd_query_adaptor(nd_dev, uctx);
> -	if (ret) {
> -		hvnd_error("Query Adaptor failed; ret is %d\n", ret);
> -		goto query_err;
> -	}
> -
> -	return ret;
> -
> -query_err:
> -	hvnd_free_handle(nd_dev, uctx,
> -			uctx->adaptor_hdl,
> -			IOCTL_ND_ADAPTER_CLOSE);
> -
> -	hvnd_error("Open Adaptor Failed!!\n");
> -
> -error_file_bind:
> -	hvnd_cleanup_file(nd_dev, uctx->file_handle_ovl.local,
> -			uctx->file_handle_ovl.remote);
> -
> -error_pr_init:
> -	hvnd_cleanup_file(nd_dev, uctx->file_handle.local,
> -			uctx->file_handle.remote);
> -
> -error_cr:
> -	if (get_uctx(nd_dev, current_pid()) != NULL)
> -		remove_handle(nd_dev, &nd_dev->uctxidr, current_pid());
> -
> -	return ret;
> -}
> -
> -int hvnd_create_cq(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
> -		   struct hvnd_cq *cq)
> -{
> -	int ret;
> -	struct pkt_nd_create_cq *pkt;
> -	int num_pfn, num_db_pfn, num_sn_pfn;
> -	int cq_pkt_size;
> -	unsigned int cq_buf_size, offset;
> -	u32 ext_data_sz;
> -	u32 ext_data_offset;
> -
> -	/*
> -	 * Now create CQ.
> -	 * First compute the number of PFNs we need to accomodate:
> -	 * One each for door bell and arm_sn and pages in cq buffer.
> -	 */
> -	cq_buf_size = (cq->entries * uctx->cqe_size);
> -	offset = offset_in_page(cq->cq_buf);
> -	num_pfn = DIV_ROUND_UP(offset + cq_buf_size, PAGE_SIZE);
> -
> -	offset = offset_in_page(cq->db_addr);
> -	num_db_pfn = DIV_ROUND_UP(offset + 8, PAGE_SIZE);
> -
> -	offset = offset_in_page(&cq->arm_sn);
> -	num_sn_pfn = DIV_ROUND_UP(offset + 4, PAGE_SIZE);
> -
> -	cq_pkt_size = sizeof(struct pkt_nd_create_cq) +
> -		(num_pfn  * sizeof(u64));
> -
> -	ext_data_sz = sizeof(struct create_cq_ext_data) +
> -		(num_pfn * sizeof(u64));
> -	ext_data_offset = offsetof(struct pkt_nd_create_cq, ext_data) -
> -		sizeof(struct ndv_packet_hdr_control_1);
> -
> -	hvnd_debug("CREATE CQ, num user addr pfns is %d\n", num_pfn);
> -	hvnd_debug("CREATE CQ, num db pfns is %d\n", num_db_pfn);
> -
> -	pkt = kzalloc(cq_pkt_size, GFP_KERNEL);
> -
> -	if (!pkt)
> -		return -ENOMEM;
> -
> -	hvnd_init_hdr(&pkt->hdr,
> -			(cq_pkt_size -
> -			sizeof(struct ndv_packet_hdr_control_1)),
> -			uctx->create_pkt.handle.local,
> -			uctx->create_pkt.handle.remote,
> -			IOCTL_ND_CQ_CREATE,
> -			ext_data_sz,
> -			ext_data_offset,
> -			0);
> -
> -	/*
> -	 * Now fill out the ioctl section.
> -	 */
> -
> -	pkt->ioctl.input.version = ND_VERSION_1;
> -	pkt->ioctl.input.queue_depth = cq->entries;
> -	pkt->ioctl.input.ce_mapping_cnt = MLX4_IB_CREATE_CQ_MAPPING_MAX;
> -	pkt->ioctl.input.cb_mapping_offset = sizeof(union create_cq_ioctl);
> -
> -	hvnd_debug("ce_mapping cnt is %d\n",  pkt->ioctl.input.ce_mapping_cnt);
> -	hvnd_debug("cb_mapping offset is %d\n",
> -		   pkt->ioctl.input.cb_mapping_offset);
> -
> -	pkt->ioctl.input.adapter_handle = uctx->adaptor_hdl;
> -	pkt->ioctl.input.affinity.mask = 0;
> -	pkt->ioctl.input.affinity.group = -1;
> -
> -	// 0 for usermode CQ arming
> -	pkt->mappings.cq_in.flags = 0;
> -
> -	pkt->mappings.cq_in.mappings[MLX4_IB_CREATE_CQ_BUF].map_memory.map_type = ND_MAP_MEMORY;
> -	pkt->mappings.cq_in.mappings[MLX4_IB_CREATE_CQ_BUF].map_memory.access_type = ND_MODIFY_ACCESS;
> -	pkt->mappings.cq_in.mappings[MLX4_IB_CREATE_CQ_BUF].map_memory.address = (u64)cq->cq_buf;
> -	pkt->mappings.cq_in.mappings[MLX4_IB_CREATE_CQ_BUF].map_memory.cb_length = (cq->entries * uctx->cqe_size);
> -
> -	pkt->mappings.cq_in.mappings[MLX4_IB_CREATE_CQ_DB].map_memory.map_type = ND_MAP_MEMORY_COALLESCE;
> -	pkt->mappings.cq_in.mappings[MLX4_IB_CREATE_CQ_DB].map_memory.access_type = ND_WRITE_ACCESS;
> -	pkt->mappings.cq_in.mappings[MLX4_IB_CREATE_CQ_DB].map_memory.address = (u64)cq->db_addr;
> -	pkt->mappings.cq_in.mappings[MLX4_IB_CREATE_CQ_DB].map_memory.cb_length = 8; //size of two ints
> -
> -
> -	pkt->mappings.cq_in.mappings[MLX4_IB_CREATE_CQ_ARM_SN].map_memory.map_type = ND_MAP_MEMORY;
> -	pkt->mappings.cq_in.mappings[MLX4_IB_CREATE_CQ_ARM_SN].map_memory.access_type = ND_MODIFY_ACCESS;
> -	pkt->mappings.cq_in.mappings[MLX4_IB_CREATE_CQ_ARM_SN].map_memory.address = (u64)&cq->arm_sn;
> -	pkt->mappings.cq_in.mappings[MLX4_IB_CREATE_CQ_ARM_SN].map_memory.cb_length = 4; //size of one int
> -	/*
> -	 * Fill in the extended data.
> -	 */
> -
> -	pkt->ext_data.cnt = 3;
> -	pkt->ext_data.fields[MLX4_IB_CREATE_CQ_BUF].size = (sizeof(struct gpa_range) + (num_pfn * sizeof(u64)));
> -	pkt->ext_data.fields[MLX4_IB_CREATE_CQ_BUF].offset = offsetof(struct create_cq_ext_data, cqbuf_gpa);
> -
> -	pkt->ext_data.fields[MLX4_IB_CREATE_CQ_DB].size = sizeof(struct cq_db_gpa);
> -	pkt->ext_data.fields[MLX4_IB_CREATE_CQ_DB].offset = offsetof(struct create_cq_ext_data, db_gpa);
> -
> -	pkt->ext_data.fields[MLX4_IB_CREATE_CQ_ARM_SN].size = sizeof(struct cq_db_gpa);
> -	pkt->ext_data.fields[MLX4_IB_CREATE_CQ_ARM_SN].offset = offsetof(struct create_cq_ext_data, sn_gpa);
> -
> -	/*
> -	 * Fill up the gpa range for cq buffer.
> -	 */
> -
> -	pkt->ext_data.db_gpa.byte_count = 8;
> -	pkt->ext_data.db_gpa.byte_offset = offset_in_page(cq->db_addr);
> -	user_va_init_pfn(&pkt->ext_data.db_gpa.pfn_array[0], cq->db_umem);
> -
> -	pkt->ext_data.sn_gpa.byte_count = 4;
> -	pkt->ext_data.sn_gpa.byte_offset = offset_in_page(&cq->arm_sn);
> -	init_pfn(&pkt->ext_data.sn_gpa.pfn_array[0],
> -		 &cq->arm_sn,
> -		 4);
> -
> -	pkt->ext_data.cqbuf_gpa.byte_count = (cq->entries * uctx->cqe_size);
> -	pkt->ext_data.cqbuf_gpa.byte_offset = offset_in_page(cq->cq_buf);
> -	user_va_init_pfn(&pkt->ext_data.cqbuf_gpa.pfn_array[0], cq->umem);
> -
> -	ret = hvnd_send_ioctl_pkt(nd_dev, &pkt->hdr, cq_pkt_size, (u64)pkt);
> -
> -	if (ret)
> -		goto cr_cq_err;
> -
> -	/*
> -	 * Copy the necessary response from the host.
> -	 */
> -	cq->cqn = pkt->mappings.cq_resp.cqn;
> -	cq->cqe = pkt->mappings.cq_resp.cqe;
> -	cq->cq_handle = pkt->ioctl.resrc_desc.handle;
> -
> -	ret = insert_handle(nd_dev, &nd_dev->cqidr, cq, cq->cqn);
> -
> -	if (ret)
> -		goto cr_cq_err;
> -	hvnd_debug("CQ create after success cqn is %d\n", cq->cqn);
> -	hvnd_debug("CQ create after success cqe is %d\n", cq->cqe);
> -	hvnd_debug("CQ create after success cq handle is %p\n",
> -		   (void *)cq->cq_handle);
> -
> -cr_cq_err:
> -	kfree(pkt);
> -	return ret;
> -}
> -
> -int hvnd_destroy_cq(struct hvnd_dev *nd_dev, struct hvnd_cq *cq)
> -{
> -	struct pkt_nd_free_cq free_cq_pkt;
> -	int ret;
> -
> -	// KYS try to avoid having to zero everything
> -	memset(&free_cq_pkt, 0, sizeof(free_cq_pkt));
> -	hvnd_init_hdr(&free_cq_pkt.hdr,
> -		      sizeof(struct pkt_nd_free_cq) -
> -		      sizeof(struct ndv_packet_hdr_control_1),
> -		      cq->uctx->create_pkt.handle.local,
> -		      cq->uctx->create_pkt.handle.remote,
> -		      IOCTL_ND_CQ_FREE, 0, 0, 0);
> -
> -	/*
> -	 * Now fill in the ioctl section.
> -	 */
> -	free_cq_pkt.ioctl.in.version = ND_VERSION_1;
> -	free_cq_pkt.ioctl.in.handle = cq->cq_handle;
> -
> -	ret = hvnd_send_ioctl_pkt(nd_dev, &free_cq_pkt.hdr,
> -			       sizeof(struct pkt_nd_free_cq),
> -			       (u64)&free_cq_pkt);
> -
> -	if (ret)
> -		goto free_cq_err;
> -
> -	remove_handle(nd_dev, &nd_dev->cqidr, cq->cqn);
> -
> -	return 0;
> -
> -free_cq_err:
> -	return ret;
> -}
> -
> -
> -int hvnd_notify_cq(struct hvnd_dev *nd_dev, struct hvnd_cq *cq,
> -		   u32 notify_type, u64 irp_handle)
> -{
> -	struct pkt_nd_notify_cq notify_cq_pkt;
> -	int ret;
> -	union ndv_context_handle irp_fhandle;
> -
> -	irp_fhandle.local = cq->ep_object.local_irp;
> -
> -	// KYS try to avoid having to zero everything
> -	memset(&notify_cq_pkt, 0, sizeof(notify_cq_pkt));
> -	hvnd_init_hdr(&notify_cq_pkt.hdr,
> -		      sizeof(struct pkt_nd_notify_cq) -
> -		      sizeof(struct ndv_packet_hdr_control_1),
> -		      cq->uctx->create_pkt.handle.local,
> -		      cq->uctx->create_pkt.handle.remote,
> -		      IOCTL_ND_CQ_NOTIFY, 0, 0, irp_fhandle.val64);
> -
> -	/*
> -	 * Now fill in the ioctl section.
> -	 */
> -	notify_cq_pkt.ioctl.in.version = ND_VERSION_1;
> -	notify_cq_pkt.ioctl.in.cq_handle = cq->cq_handle;
> -	notify_cq_pkt.ioctl.in.type = notify_type;
> -
> -
> -	ret = hvnd_send_ioctl_pkt(nd_dev, &notify_cq_pkt.hdr,
> -			       sizeof(struct pkt_nd_notify_cq),
> -			       (u64)&notify_cq_pkt);
> -
> -	return ret;
> -}
> -
> -/*
> - * Memory region operations.
> - */
> -int hvnd_cr_mr(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
> -		u64 pd_handle, u64 *mr_handle)
> -{
> -	struct pkt_nd_create_mr pkt;
> -	int ret;
> -
> -	// KYS try to avoid having to zero everything
> -	memset(&pkt, 0, sizeof(pkt));
> -	hvnd_init_hdr(&pkt.hdr,
> -		      sizeof(pkt) -
> -		      sizeof(struct ndv_packet_hdr_control_1),
> -		      uctx->create_pkt.handle.local,
> -		      uctx->create_pkt.handle.remote,
> -		      IOCTL_ND_MR_CREATE, 0, 0, 0);
> -
> -	/*
> -	 * Now fill in the ioctl section.
> -	 */
> -	pkt.ioctl.in.version = ND_VERSION_1;
> -	pkt.ioctl.in.handle = pd_handle;
> -	hvnd_debug("PD handle is %p\n", (void *)pd_handle);
> -	pkt.ioctl.in.reserved = 0;
> -
> -	ret = hvnd_send_ioctl_pkt(nd_dev, &pkt.hdr, sizeof(pkt), (u64)&pkt);
> -
> -	if (ret)
> -		goto err;
> -
> -	/*
> -	 * Copy the  handle.
> -	 */
> -	hvnd_debug("mr handle is %p\n", (void *)pkt.ioctl.out);
> -	*mr_handle = pkt.ioctl.out;
> -
> -	return 0;
> -
> -err:
> -	hvnd_error("create mr failed: %d\n", ret);
> -	return ret;
> -
> -}
> -
> -int hvnd_free_mr(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
> -		 u64 handle)
> -{
> -	return hvnd_free_handle(nd_dev, uctx, handle, IOCTL_ND_MR_FREE);
> -}
> -
> -int hvnd_deregister_mr(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
> -			u64 handle)
> -{
> -	struct pkt_nd_deregister_mr pkt;
> -	int ret;
> -
> -	// KYS try to avoid having to zero everything
> -	memset(&pkt, 0, sizeof(pkt));
> -	hvnd_init_hdr(&pkt.hdr,
> -		      sizeof(pkt) -
> -		      sizeof(struct ndv_packet_hdr_control_1),
> -		      uctx->create_pkt.handle.local,
> -		      uctx->create_pkt.handle.remote,
> -		      IOCTL_ND_MR_DEREGISTER, 0, 0, 0);
> -
> -	/*
> -	 * Now fill in the ioctl section.
> -	 */
> -	pkt.ioctl.in.version = ND_VERSION_1;
> -	pkt.ioctl.in.handle = handle;
> -	pkt.ioctl.in.reserved = 0;
> -
> -	ret = hvnd_send_ioctl_pkt(nd_dev, &pkt.hdr, sizeof(pkt), (u64)&pkt);
> -
> -	if (ret)
> -		goto err;
> -
> -	return 0;
> -
> -err:
> -	hvnd_error("de-register mr failed: %d\n", ret);
> -	return ret;
> -
> -}
> -
> -static inline u32 hvnd_convert_access(int acc)
> -{
> -	return (acc & IB_ACCESS_REMOTE_WRITE ? ND_MR_FLAG_ALLOW_REMOTE_WRITE : 0) |
> -	    (acc & IB_ACCESS_REMOTE_READ ? ND_MR_FLAG_ALLOW_REMOTE_READ : 0) |
> -	    (acc & IB_ACCESS_LOCAL_WRITE ? ND_MR_FLAG_ALLOW_LOCAL_WRITE : 0);
> -}
> -
> -
> -int hvnd_mr_register(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
> -		     struct hvnd_mr *mr)
> -{
> -	struct pkt_nd_register_mr pkt;
> -	int ret;
> -	struct hv_mpb_array *pb;
> -	struct vmbus_packet_mpb_array *tpb;
> -	int sz_leaf;
> -	int num_pgs;
> -	int i = 0;
> -	int ext_data_sz;
> -	u32 acc_flags;
> -	u32 desc_size;
> -	int pkt_type;
> -
> -	/*
> -	 * The user address is passed in via a two level structure.
> -	 * An Array of struct hv_page_buffer will be used to describe
> -	 * the user memory. The pages containing this array will be descibed
> -	 * in another array of struct hv_page_buffer. We pass this seconed level
> -	 * array to the host.
> -	 */
> -
> -	hvnd_debug("ib_umem_page_count(mr->umem)=%d\n",
> -		   ib_umem_page_count(mr->umem));
> -
> -	sz_leaf = ib_umem_page_count(mr->umem) * sizeof(u64) +
> -		sizeof(struct hv_mpb_array);
> -
> -	pb = (struct hv_mpb_array *) __get_free_pages(GFP_KERNEL|__GFP_ZERO,
> -						      get_order(sz_leaf));
> -
> -	if (pb == NULL)
> -		return -ENOMEM;
> -	/*
> -	 * Allocate an array of hv_page_buffer to describe the first level.
> -	 */
> -	num_pgs = DIV_ROUND_UP(sz_leaf, PAGE_SIZE);
> -	hvnd_debug("num pages in the top array is %d\n", num_pgs);
> -
> -	desc_size = (num_pgs * sizeof(u64) +
> -			sizeof(struct vmbus_packet_mpb_array));
> -	tpb = (struct vmbus_packet_mpb_array *)
> -		__get_free_pages(GFP_KERNEL|__GFP_ZERO, get_order(desc_size));
> -
> -	if (tpb == NULL) {
> -		free_pages((unsigned long)pb, get_order(sz_leaf));
> -		return -ENOMEM;
> -	}
> -
> -	hvnd_debug("sz leaf: %d; pgs in top %d\n", sz_leaf, num_pgs);
> -
> -	/*
> -	 * Now fill the leaf level array.
> -	 */
> -	pb->len = mr->length;
> -	pb->offset = offset_in_page(mr->start);
> -	user_va_init_pfn(pb->pfn_array, mr->umem);
> -
> -	/*
> -	 * Now fill out the top level array.
> -	 */
> -	for (i = 0; i < num_pgs; i++) {
> -		tpb->range.pfn_array[i] = virt_to_phys(
> -			(u8 *)pb + (PAGE_SIZE * i)) >> PAGE_SHIFT;
> -		hvnd_debug("virtual address = %p\n",
> -			   (u8 *)pb + (PAGE_SIZE * i));
> -		hvnd_debug("physical address = %llx\n",
> -			   virt_to_phys((u8 *)pb + (PAGE_SIZE * i)));
> -		hvnd_debug("tpb->range.pfn_array[%d]=%llx\n", i,
> -			   tpb->range.pfn_array[i]);
> -	}
> -
> -	tpb->range.offset = 8;
> -	tpb->range.len = ib_umem_page_count(mr->umem) * sizeof(u64);
> -
> -	// KYS try to avoid having to zero everything
> -	memset(&pkt, 0, sizeof(pkt));
> -	ext_data_sz = (ib_umem_page_count(mr->umem) * sizeof(u64));
> -	acc_flags = ND_MR_FLAG_DO_NOT_SECURE_VM | hvnd_convert_access(mr->acc);
> -	hvnd_debug("memory register access flags are: %x\n", acc_flags);
> -
> -	hvnd_init_hdr(&pkt.hdr,
> -		      sizeof(pkt) -
> -		      sizeof(struct ndv_packet_hdr_control_1),
> -		      uctx->create_pkt.handle.local,
> -		      uctx->create_pkt.handle.remote,
> -		      IOCTL_ND_MR_REGISTER, 0, 0, 0);
> -
> -	/*
> -	 * The memory registration call uses a different mechanism to pass
> -	 * pfn information.
> -	 */
> -
> -	pkt_type = pkt.hdr.pkt_hdr.packet_type;
> -	NDV_ADD_PACKET_OPTION(pkt_type, NDV_PACKET_OPTION_EXTERNAL_DATA);
> -	pkt.hdr.pkt_hdr.packet_type = pkt_type;
> -
> -	pkt.hdr.extended_data.size = ext_data_sz;
> -	pkt.hdr.extended_data.offset = 0;
> -	/*
> -	 * Now fill out the ioctl.
> -	 */
> -
> -	pkt.ioctl.in.header.version = ND_VERSION_1;
> -	pkt.ioctl.in.header.flags = acc_flags;
> -	pkt.ioctl.in.header.cb_length = mr->length;
> -	pkt.ioctl.in.header.target_addr = mr->virt;
> -	pkt.ioctl.in.header.mr_handle = mr->mr_handle;
> -	pkt.ioctl.in.address = mr->virt;
> -
> -	/*
> -	 * Now send the packet to the host.
> -	 */
> -
> -	ret = hvnd_send_pgbuf_ioctl_pkt(nd_dev,
> -					tpb, desc_size,
> -					&pkt.hdr,
> -					sizeof(pkt),
> -					(unsigned long)&pkt);
> -
> -	if (ret)
> -		goto err;
> -
> -	hvnd_info("MR REGISTRATION SUCCESS\n");
> -	/*
> -	 * Copy the mr registration data.
> -	 */
> -	hvnd_debug("mr registration lkey %x\n", pkt.ioctl.out.lkey);
> -	hvnd_debug("mr registration rkey %x\n", pkt.ioctl.out.rkey);
> -
> -	mr->mr_lkey = pkt.ioctl.out.lkey;
> -	mr->mr_rkey = pkt.ioctl.out.rkey;
> -
> -	mr->ibmr.lkey = mr->mr_lkey;
> -	mr->ibmr.rkey = be32_to_cpu(mr->mr_rkey);
> -	hvnd_debug("ibmr registration lkey %x\n", mr->ibmr.lkey);
> -	hvnd_debug("ibmr registration rkey  %x\n", mr->ibmr.rkey);
> -
> -	free_pages((unsigned long)pb, get_order(sz_leaf));
> -	free_pages((unsigned long)tpb, get_order(desc_size));
> -
> -	return 0;
> -
> -err:
> -	free_pages((unsigned long)pb, get_order(sz_leaf));
> -	free_pages((unsigned long)tpb, get_order(desc_size));
> -
> -	hvnd_error("mr register failed: %d\n", ret);
> -	return ret;
> -}
> -
> -/*
> - * Listener operations.
> - */
> -int hvnd_cr_listener(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
> -		     u64 *listener_handle)
> -{
> -	struct pkt_nd_cr_listener pkt;
> -	int ret;
> -
> -	// KYS try to avoid having to zero everything
> -	memset(&pkt, 0, sizeof(pkt));
> -	hvnd_init_hdr(&pkt.hdr,
> -		      sizeof(pkt) -
> -		      sizeof(struct ndv_packet_hdr_control_1),
> -		      uctx->create_pkt.handle.local,
> -		      uctx->create_pkt.handle.remote,
> -		      IOCTL_ND_LISTENER_CREATE, 0, 0, 0);
> -
> -	/*
> -	 * Now fill in the ioctl section.
> -	 */
> -	pkt.ioctl.in.hdr.version = ND_VERSION_1;
> -	pkt.ioctl.in.hdr.handle = uctx->adaptor_hdl;
> -	hvnd_debug("Adaptor handle is %p\n", (void *)uctx->adaptor_hdl);
> -	pkt.ioctl.in.hdr.reserved = 0;
> -	pkt.ioctl.in.to_semantics = false;
> -
> -	ret = hvnd_send_ioctl_pkt(nd_dev, &pkt.hdr, sizeof(pkt), (u64)&pkt);
> -
> -	if (ret)
> -		goto err;
> -
> -	/*
> -	 * Copy the listener handle.
> -	 */
> -	hvnd_debug("listener handle is %p\n", (void *)pkt.ioctl.out);
> -	*listener_handle = pkt.ioctl.out;
> -
> -	return 0;
> -
> -err:
> -	hvnd_error("create listener failed: ret=%d uctx=%p adaptor handle=%llu\n",
> -		   ret, uctx, uctx->adaptor_hdl);
> -	return ret;
> -
> -}
> -
> -int hvnd_free_listener(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
> -			u64 listener_handle)
> -{
> -	struct pkt_nd_free_listener pkt;
> -	int ret;
> -
> -	// KYS try to avoid having to zero everything
> -	memset(&pkt, 0, sizeof(pkt));
> -	hvnd_init_hdr(&pkt.hdr,
> -		      sizeof(pkt) -
> -		      sizeof(struct ndv_packet_hdr_control_1),
> -		      uctx->create_pkt.handle.local,
> -		      uctx->create_pkt.handle.remote,
> -		      IOCTL_ND_LISTENER_FREE, 0, 0, 0);
> -
> -	/*
> -	 * Now fill in the ioctl section.
> -	 */
> -	pkt.ioctl.in.version = ND_VERSION_1;
> -	pkt.ioctl.in.handle = listener_handle;
> -
> -	ret = hvnd_send_ioctl_pkt(nd_dev, &pkt.hdr, sizeof(pkt), (u64)&pkt);
> -
> -	if (ret)
> -		goto err;
> -
> -	return 0;
> -
> -err:
> -	hvnd_error("free listener failed: %d\n", ret);
> -	return ret;
> -}
> -
> -int hvnd_bind_listener(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
> -			u64 listener_handle, union nd_sockaddr_inet *addr)
> -{
> -	struct pkt_nd_bind_listener pkt;
> -	kuid_t uid = current_uid();
> -	int ret;
> -
> -	// KYS try to avoid having to zero everything
> -	memset(&pkt, 0, sizeof(pkt));
> -	hvnd_init_hdr(&pkt.hdr,
> -		      sizeof(pkt) -
> -		      sizeof(struct ndv_packet_hdr_control_1),
> -		      uctx->create_pkt.handle.local,
> -		      uctx->create_pkt.handle.remote,
> -		      IOCTL_ND_LISTENER_BIND, 0, 0, 0);
> -
> -	/*
> -	 * Now fill in the ioctl section.
> -	 */
> -	pkt.ioctl.in.hdr.version = ND_VERSION_1;
> -	pkt.ioctl.in.hdr.handle = listener_handle;
> -	pkt.ioctl.in.hdr.reserved = 0;
> -
> -	pkt.ioctl.in.authentication_id = (u32)uid.val;
> -	pkt.ioctl.in.is_admin = false;
> -
> -	memcpy(&pkt.ioctl.in.hdr.address, addr, sizeof(*addr));
> -
> -	ret = hvnd_send_ioctl_pkt(nd_dev, &pkt.hdr, sizeof(pkt), (u64)&pkt);
> -
> -	if (ret)
> -		goto err;
> -
> -	return 0;
> -
> -err:
> -	hvnd_error("bind listener failed: %d\n", ret);
> -	return ret;
> -}
> -
> -int hvnd_listen_listener(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
> -			u64 listener_handle, u32 backlog)
> -{
> -	struct pkt_nd_listen_listener pkt;
> -	int ret;
> -
> -	// KYS try to avoid having to zero everything
> -	memset(&pkt, 0, sizeof(pkt));
> -	hvnd_init_hdr(&pkt.hdr,
> -		      sizeof(pkt) -
> -		      sizeof(struct ndv_packet_hdr_control_1),
> -		      uctx->create_pkt.handle.local,
> -		      uctx->create_pkt.handle.remote,
> -		      IOCTL_ND_LISTENER_LISTEN, 0, 0, 0);
> -
> -	/*
> -	 * Now fill in the ioctl section.
> -	 */
> -	pkt.ioctl.in.version = ND_VERSION_1;
> -	pkt.ioctl.in.listener_handle = listener_handle;
> -	pkt.ioctl.in.back_log = backlog;
> -
> -
> -	ret = hvnd_send_ioctl_pkt(nd_dev, &pkt.hdr, sizeof(pkt), (u64)&pkt);
> -
> -	if (ret)
> -		goto err;
> -
> -	return 0;
> -
> -err:
> -	hvnd_error("listen listener failed: %d\n", ret);
> -	return ret;
> -}
> -
> -int hvnd_get_addr_listener(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
> -			u64 listener_handle, union nd_sockaddr_inet *addr)
> -{
> -	struct pkt_nd_get_addr_listener pkt;
> -	int ret;
> -
> -	// KYS try to avoid having to zero everything
> -	memset(&pkt, 0, sizeof(pkt));
> -	hvnd_init_hdr(&pkt.hdr,
> -		      sizeof(pkt) -
> -		      sizeof(struct ndv_packet_hdr_control_1),
> -		      uctx->create_pkt.handle.local,
> -		      uctx->create_pkt.handle.remote,
> -		      IOCTL_ND_LISTENER_GET_ADDRESS, 0, 0, 0);
> -
> -	/*
> -	 * Now fill in the ioctl section.
> -	 */
> -	pkt.ioctl.in.version = ND_VERSION_1;
> -	pkt.ioctl.in.handle = listener_handle;
> -
> -
> -	ret = hvnd_send_ioctl_pkt(nd_dev, &pkt.hdr, sizeof(pkt), (u64)&pkt);
> -
> -	if (ret)
> -		goto err;
> -
> -	/*
> -	 * Copy the adddress.
> -	 */
> -
> -	memcpy(addr, &pkt.ioctl.out, sizeof(union nd_sockaddr_inet));
> -
> -	return 0;
> -
> -err:
> -	hvnd_error("listen listener failed: %d\n", ret);
> -	return ret;
> -}
> -
> -int hvnd_get_connection_listener(struct hvnd_dev *nd_dev,
> -				 struct hvnd_ucontext *uctx,
> -				 u64 listener_handle, u64 connector_handle,
> -				 u64 irp_handle)
> -{
> -	struct pkt_nd_get_connection_listener pkt;
> -	int ret;
> -	union ndv_context_handle irp_fhandle;
> -
> -	ret = get_irp_handle(nd_dev, &irp_fhandle.local, (void *)irp_handle);
> -
> -	if (ret) {
> -		hvnd_error("get_irp_handle() failed: err: %d\n", ret);
> -		return ret;
> -	}
> -
> -	// KYS try to avoid having to zero everything
> -	memset(&pkt, 0, sizeof(pkt));
> -	hvnd_init_hdr(&pkt.hdr,
> -		      sizeof(pkt) -
> -		      sizeof(struct ndv_packet_hdr_control_1),
> -		      uctx->create_pkt.handle.local,
> -		      uctx->create_pkt.handle.remote,
> -		      IOCTL_ND_LISTENER_GET_CONNECTION_REQUEST, 0, 0,
> -		      irp_fhandle.val64);
> -
> -	/*
> -	 * Now fill in the ioctl section.
> -	 */
> -	pkt.ioctl.in.version = ND_VERSION_1;
> -	pkt.ioctl.in.listener_handle = listener_handle;
> -	pkt.ioctl.in.connector_handle = connector_handle;
> -
> -
> -	ret = hvnd_send_ioctl_pkt(nd_dev, &pkt.hdr, sizeof(pkt), (u64)&pkt);
> -
> -	if (ret)
> -		goto err;
> -
> -	return 0;
> -
> -err:
> -	hvnd_error("get connection listener failed: %d\n", ret);
> -	return ret;
> -}
> -
> -/*
> - * Connector APIs.
> - */
> -
> -int hvnd_cr_connector(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
> -		     u64 *connector_handle)
> -{
> -	struct pkt_nd_cr_connector pkt;
> -	int ret;
> -
> -	// KYS try to avoid having to zero everything
> -	memset(&pkt, 0, sizeof(pkt));
> -	hvnd_init_hdr(&pkt.hdr,
> -		      sizeof(struct pkt_nd_cr_listener) -
> -		      sizeof(struct ndv_packet_hdr_control_1),
> -		      uctx->create_pkt.handle.local,
> -		      uctx->create_pkt.handle.remote,
> -		      IOCTL_ND_CONNECTOR_CREATE, 0, 0, 0);
> -
> -	/*
> -	 * Now fill in the ioctl section.
> -	 */
> -	pkt.ioctl.in.hdr.version = ND_VERSION_1;
> -	pkt.ioctl.in.hdr.handle = uctx->adaptor_hdl;
> -	pkt.ioctl.in.to_semantics = false;
> -
> -	ret = hvnd_send_ioctl_pkt(nd_dev, &pkt.hdr, sizeof(pkt), (u64)&pkt);
> -
> -	if (ret)
> -		goto err;
> -
> -	/*
> -	 * Copy the listener handle.
> -	 */
> -	hvnd_debug("connector handle is %p\n", (void *)pkt.ioctl.out);
> -	*connector_handle = pkt.ioctl.out;
> -
> -	return 0;
> -
> -err:
> -	return ret;
> -}
> -
> -int hvnd_free_connector(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
> -			u64 handle)
> -{
> -	struct pkt_nd_free_connector pkt;
> -	int ret;
> -
> -	// KYS try to avoid having to zero everything
> -	memset(&pkt, 0, sizeof(pkt));
> -	hvnd_init_hdr(&pkt.hdr,
> -		      sizeof(pkt) -
> -		      sizeof(struct ndv_packet_hdr_control_1),
> -		      uctx->create_pkt.handle.local,
> -		      uctx->create_pkt.handle.remote,
> -		      IOCTL_ND_CONNECTOR_FREE, 0, 0, 0);
> -
> -	/*
> -	 * Now fill in the ioctl section.
> -	 */
> -	pkt.ioctl.in.version = ND_VERSION_1;
> -	pkt.ioctl.in.handle = handle;
> -
> -	ret = hvnd_send_ioctl_pkt(nd_dev, &pkt.hdr, sizeof(pkt), (u64)&pkt);
> -
> -	if (ret)
> -		goto err;
> -
> -	return 0;
> -
> -err:
> -	return ret;
> -}
> -
> -int hvnd_bind_connector(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
> -			u64 handle, union nd_sockaddr_inet *addr)
> -{
> -	struct pkt_nd_bind_connector pkt;
> -	int ret;
> -	kuid_t uid = current_uid();
> -
> -	// KYS try to avoid having to zero everything
> -	memset(&pkt, 0, sizeof(pkt));
> -	hvnd_init_hdr(&pkt.hdr,
> -		      sizeof(pkt) -
> -		      sizeof(struct ndv_packet_hdr_control_1),
> -		      uctx->create_pkt.handle.local,
> -		      uctx->create_pkt.handle.remote,
> -		      IOCTL_ND_CONNECTOR_BIND, 0, 0, 0);
> -
> -	/*
> -	 * Now fill in the ioctl section.
> -	 */
> -	pkt.ioctl.in.hdr.version = ND_VERSION_1;
> -	pkt.ioctl.in.hdr.handle = handle;
> -
> -	memcpy(&pkt.ioctl.in.hdr.address, addr, sizeof(*addr));
> -
> -	pkt.ioctl.in.authentication_id = (u32)uid.val;
> -	pkt.ioctl.in.is_admin = false;
> -
> -
> -	ret = hvnd_send_ioctl_pkt(nd_dev, &pkt.hdr, sizeof(pkt), (u64)&pkt);
> -
> -	if (ret)
> -		goto err;
> -
> -	return 0;
> -
> -err:
> -	return ret;
> -}
> -
> -int hvnd_connector_connect(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
> -			u64 connector_handle, u32 in_rd_limit, u32 out_rd_limit,
> -			u32 priv_data_length, const u8 *priv_data,
> -			u64 qp_handle, struct if_physical_addr *phys_addr,
> -			union nd_sockaddr_inet *dest_addr,
> -			struct hvnd_ep_obj *ep)
> -{
> -	struct pkt_nd_connector_connect *pkt = &ep->connector_connect_pkt;
> -	int ret;
> -	union ndv_context_handle irp_fhandle;
> -
> -	hvnd_debug("local irp is %d\n", ep->local_irp);
> -	irp_fhandle.local = ep->local_irp;
> -
> -	if (priv_data_length > MAX_PRIVATE_DATA_LEN) {
> -		hvnd_error("priv_data_length=%d\n", priv_data_length);
> -		return -EINVAL;
> -	}
> -
> -	// KYS try to avoid having to zero everything
> -	memset(pkt, 0, sizeof(*pkt));
> -	hvnd_init_hdr(&pkt->hdr,
> -		      sizeof(*pkt) -
> -		      sizeof(struct ndv_packet_hdr_control_1),
> -		      uctx->create_pkt.handle.local,
> -		      uctx->create_pkt.handle.remote,
> -		      IOCTL_ND_CONNECTOR_CONNECT, 0, 0, irp_fhandle.val64);
> -
> -	/*
> -	 * Now fill in the ioctl section.
> -	 */
> -	pkt->ioctl.in.hdr.version = ND_VERSION_1;
> -	pkt->ioctl.in.hdr.connector_handle = connector_handle;
> -	pkt->ioctl.in.hdr.read_limits.inbound = in_rd_limit;
> -	pkt->ioctl.in.hdr.read_limits.outbound = out_rd_limit;
> -	pkt->ioctl.in.hdr.cb_private_data_length = priv_data_length;
> -	pkt->ioctl.in.hdr.cb_private_data_offset =
> -		offsetof(union connector_connect_ioctl, in.priv_data);
> -	pkt->ioctl.in.hdr.qp_handle = qp_handle;
> -
> -	memcpy(&pkt->ioctl.in.hdr.phys_addr, phys_addr,
> -		sizeof(struct if_physical_addr));
> -
> -	/*
> -	 * Luke's code does not copy the ip address.
> -	 */
> -	memcpy(&pkt->ioctl.in.hdr.destination_address, dest_addr,
> -		sizeof(union nd_sockaddr_inet));
> -
> -	pkt->ioctl.in.retry_cnt = 7;
> -	pkt->ioctl.in.rnr_retry_cnt = 7;
> -	memcpy(pkt->ioctl.in.priv_data, priv_data, priv_data_length);
> -
> -	ret = hvnd_send_ioctl_pkt(nd_dev, &pkt->hdr, sizeof(*pkt), (u64)pkt);
> -
> -	if (ret)
> -		goto err;
> -
> -	return 0;
> -
> -err:
> -	return ret;
> -}
> -
> -int hvnd_connector_complete_connect(struct hvnd_dev *nd_dev,
> -				    struct hvnd_ucontext *uctx,
> -				    u64 connector_handle,
> -				    enum ibv_qp_state *qp_state)
> -{
> -	struct pkt_nd_connector_connect_complete pkt;
> -	int ret;
> -
> -	// KYS try to avoid having to zero everything
> -	memset(&pkt, 0, sizeof(pkt));
> -	hvnd_init_hdr(&pkt.hdr,
> -		      sizeof(pkt) -
> -		      sizeof(struct ndv_packet_hdr_control_1),
> -		      uctx->create_pkt.handle.local,
> -		      uctx->create_pkt.handle.remote,
> -		      IOCTL_ND_CONNECTOR_COMPLETE_CONNECT, 0, 0, 0);
> -
> -	/*
> -	 * Now fill in the ioctl section.
> -	 */
> -	pkt.ioctl.in.hdr.version = ND_VERSION_1;
> -	pkt.ioctl.in.hdr.handle = connector_handle;
> -	pkt.ioctl.in.rnr_nak_to = 0;
> -
> -	ret = hvnd_send_ioctl_pkt(nd_dev, &pkt.hdr, sizeof(pkt), (u64)&pkt);
> -
> -	if (ret)
> -		goto err;
> -
> -	*qp_state = pkt.ioctl.out.state;
> -	return 0;
> -
> -err:
> -	return ret;
> -}
> -
> -int hvnd_connector_accept(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
> -			u64 connector_handle,
> -			u64 qp_handle,
> -			u32 in_rd_limit, u32 out_rd_limit,
> -			u32 priv_data_length, const u8 *priv_data,
> -			enum ibv_qp_state *qp_state, struct hvnd_ep_obj *ep)
> -{
> -	struct pkt_nd_connector_accept pkt;
> -	int ret;
> -	union ndv_context_handle irp_fhandle;
> -
> -	irp_fhandle.local = ep->local_irp;
> -
> -	if (priv_data_length > MAX_PRIVATE_DATA_LEN) {
> -		hvnd_error("priv_data_length=%d\n", priv_data_length);
> -		return -EINVAL;
> -	}
> -
> -	// KYS try to avoid having to zero everything
> -	memset(&pkt, 0, sizeof(pkt));
> -	hvnd_init_hdr(&pkt.hdr,
> -		      sizeof(pkt) -
> -		      sizeof(struct ndv_packet_hdr_control_1),
> -		      uctx->create_pkt.handle.local,
> -		      uctx->create_pkt.handle.remote,
> -		      IOCTL_ND_CONNECTOR_ACCEPT, 0, 0, irp_fhandle.val64);
> -
> -	/*
> -	 * Now fill in the ioctl section.
> -	 */
> -	pkt.ioctl.in.hdr.version = ND_VERSION_1;
> -	pkt.ioctl.in.hdr.reserved = 0;
> -	pkt.ioctl.in.hdr.read_limits.inbound = in_rd_limit;
> -	pkt.ioctl.in.hdr.read_limits.outbound = out_rd_limit;
> -	pkt.ioctl.in.hdr.cb_private_data_length = priv_data_length;
> -
> -	pkt.ioctl.in.hdr.cb_private_data_offset =
> -		offsetof(struct connector_accept_in, private_data);
> -
> -	pkt.ioctl.in.hdr.connector_handle = connector_handle;
> -	pkt.ioctl.in.hdr.qp_handle = qp_handle;
> -
> -	pkt.ioctl.in.rnr_nak_to = 0;
> -	pkt.ioctl.in.rnr_retry_cnt = 7;
> -
> -
> -	memcpy(pkt.ioctl.in.private_data, priv_data, priv_data_length);
> -
> -	ret = hvnd_send_ioctl_pkt(nd_dev, &pkt.hdr, sizeof(pkt), (u64)&pkt);
> -
> -	if (ret)
> -		goto err;
> -
> -	*qp_state = pkt.ioctl.out.state;
> -	return 0;
> -
> -err:
> -	return ret;
> -}
> -
> -int hvnd_connector_reject(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
> -			u64 connector_handle,
> -			u32 priv_data_length, u8 *priv_data,
> -			enum ibv_qp_state *qp_state)
> -{
> -	struct pkt_nd_connector_reject pkt;
> -	int ret;
> -
> -	if (priv_data_length > MAX_PRIVATE_DATA_LEN) {
> -		hvnd_error("priv_data_length=%d\n", priv_data_length);
> -		return -EINVAL;
> -	}
> -
> -	// KYS try to avoid having to zero everything
> -	memset(&pkt, 0, sizeof(pkt));
> -	hvnd_init_hdr(&pkt.hdr,
> -		      sizeof(pkt) -
> -		      sizeof(struct ndv_packet_hdr_control_1),
> -		      uctx->create_pkt.handle.local,
> -		      uctx->create_pkt.handle.remote,
> -		      IOCTL_ND_CONNECTOR_REJECT, 0, 0, 0);
> -
> -	/*
> -	 * Now fill in the ioctl section.
> -	 */
> -	pkt.ioctl.in.hdr.version = ND_VERSION_1;
> -	pkt.ioctl.in.hdr.reserved = 0;
> -	pkt.ioctl.in.hdr.cb_private_data_length = priv_data_length;
> -
> -	pkt.ioctl.in.hdr.cb_private_data_offset =
> -		offsetof(struct connector_reject_in, private_data);
> -
> -	pkt.ioctl.in.hdr.connector_handle = connector_handle;
> -
> -	memcpy(pkt.ioctl.in.private_data, priv_data, priv_data_length);
> -
> -	ret = hvnd_send_ioctl_pkt(nd_dev, &pkt.hdr, sizeof(pkt), (u64)&pkt);
> -
> -	if (ret)
> -		goto err;
> -
> -	*qp_state = pkt.ioctl.out.state;
> -	return 0;
> -
> -err:
> -	return ret;
> -}
> -
> -int hvnd_connector_get_rd_limits(struct hvnd_dev *nd_dev,
> -			struct hvnd_ucontext *uctx,
> -			u64 connector_handle,
> -			struct nd_read_limits *rd_limits)
> -{
> -	struct pkt_nd_connector_get_rd_limits pkt;
> -	int ret;
> -
> -
> -	// KYS try to avoid having to zero everything
> -	memset(&pkt, 0, sizeof(pkt));
> -	hvnd_init_hdr(&pkt.hdr,
> -		      sizeof(pkt) -
> -		      sizeof(struct ndv_packet_hdr_control_1),
> -		      uctx->create_pkt.handle.local,
> -		      uctx->create_pkt.handle.remote,
> -		      IOCTL_ND_CONNECTOR_GET_READ_LIMITS, 0, 0, 0);
> -
> -	/*
> -	 * Now fill in the ioctl section.
> -	 */
> -	pkt.ioctl.in.in.version = ND_VERSION_1;
> -	pkt.ioctl.in.in.reserved = 0;
> -	pkt.ioctl.in.in.handle = connector_handle;
> -
> -	ret = hvnd_send_ioctl_pkt(nd_dev, &pkt.hdr, sizeof(pkt), (u64)&pkt);
> -
> -	if (ret)
> -		goto err;
> -
> -	*rd_limits = pkt.ioctl.out.out;
> -	return 0;
> -
> -err:
> -	return ret;
> -}
> -
> -int hvnd_connector_get_priv_data(struct hvnd_dev *nd_dev,
> -			struct hvnd_ucontext *uctx,
> -			u64 connector_handle,
> -			u8 *priv_data)
> -{
> -	struct pkt_nd_connector_get_priv_data pkt;
> -	int ret;
> -
> -
> -	// KYS try to avoid having to zero everything
> -	memset(&pkt, 0, sizeof(pkt));
> -	hvnd_init_hdr(&pkt.hdr,
> -		      sizeof(pkt) -
> -		      sizeof(struct ndv_packet_hdr_control_1),
> -		      uctx->create_pkt.handle.local,
> -		      uctx->create_pkt.handle.remote,
> -		      IOCTL_ND_CONNECTOR_GET_PRIVATE_DATA, 0, 0, 0);
> -
> -	/*
> -	 * Now fill in the ioctl section.
> -	 */
> -	pkt.ioctl.in.version = ND_VERSION_1;
> -	pkt.ioctl.in.reserved = 0;
> -	pkt.ioctl.in.handle = connector_handle;
> -
> -	ret = hvnd_send_ioctl_pkt(nd_dev, &pkt.hdr, sizeof(pkt), (u64)&pkt);
> -
> -	if (ret)
> -		goto err;
> -
> -	memcpy(priv_data, pkt.ioctl.out, MAX_PRIVATE_DATA_LEN);
> -	return 0;
> -
> -err:
> -	return ret;
> -}
> -
> -int hvnd_connector_get_peer_addr(struct hvnd_dev *nd_dev,
> -			struct hvnd_ucontext *uctx,
> -			u64 connector_handle,
> -			union nd_sockaddr_inet *peer_addr)
> -{
> -	struct pkt_nd_connector_get_peer_addr pkt;
> -	int ret;
> -
> -
> -	// KYS try to avoid having to zero everything
> -	memset(&pkt, 0, sizeof(pkt));
> -	hvnd_init_hdr(&pkt.hdr,
> -		      sizeof(pkt) -
> -		      sizeof(struct ndv_packet_hdr_control_1),
> -		      uctx->create_pkt.handle.local,
> -		      uctx->create_pkt.handle.remote,
> -		      IOCTL_ND_CONNECTOR_GET_PEER_ADDRESS, 0, 0, 0);
> -
> -	/*
> -	 * Now fill in the ioctl section.
> -	 */
> -	pkt.ioctl.in.version = ND_VERSION_1;
> -	pkt.ioctl.in.reserved = 0;
> -	pkt.ioctl.in.handle = connector_handle;
> -
> -	ret = hvnd_send_ioctl_pkt(nd_dev, &pkt.hdr, sizeof(pkt), (u64)&pkt);
> -
> -	if (ret)
> -		goto err;
> -
> -	memcpy(peer_addr, &pkt.ioctl.out, sizeof(union nd_sockaddr_inet));
> -	return 0;
> -
> -err:
> -	return ret;
> -}
> -
> -int hvnd_connector_get_local_addr(struct hvnd_dev *nd_dev,
> -			struct hvnd_ucontext *uctx,
> -			u64 connector_handle,
> -			union nd_sockaddr_inet *addr)
> -{
> -	struct pkt_nd_connector_get_addr pkt;
> -	int ret;
> -
> -	// KYS try to avoid having to zero everything
> -	memset(&pkt, 0, sizeof(pkt));
> -	hvnd_init_hdr(&pkt.hdr,
> -		      sizeof(pkt) -
> -		      sizeof(struct ndv_packet_hdr_control_1),
> -		      uctx->create_pkt.handle.local,
> -		      uctx->create_pkt.handle.remote,
> -		      IOCTL_ND_CONNECTOR_GET_ADDRESS, 0, 0, 0);
> -
> -	/*
> -	 * Now fill in the ioctl section.
> -	 */
> -	pkt.ioctl.in.version = ND_VERSION_1;
> -	pkt.ioctl.in.reserved = 0;
> -	pkt.ioctl.in.handle = connector_handle;
> -
> -	ret = hvnd_send_ioctl_pkt(nd_dev, &pkt.hdr, sizeof(pkt), (u64)&pkt);
> -
> -	if (ret)
> -		goto err;
> -
> -	memcpy(addr, &pkt.ioctl.out, sizeof(union nd_sockaddr_inet));
> -	return 0;
> -
> -err:
> -	return ret;
> -}
> -
> -
> -int hvnd_connector_notify_disconnect(struct hvnd_dev *nd_dev,
> -			struct hvnd_ucontext *uctx,
> -			u64 connector_handle, struct hvnd_ep_obj *ep)
> -{
> -	struct pkt_nd_connector_notify_disconnect pkt;
> -	int ret;
> -	union ndv_context_handle irp_fhandle;
> -
> -	irp_fhandle .local = ep->local_irp;
> -
> -	hvnd_init_hdr(&pkt.hdr,
> -		      sizeof(pkt) -
> -		      sizeof(struct ndv_packet_hdr_control_1),
> -		      uctx->create_pkt.handle.local,
> -		      uctx->create_pkt.handle.remote,
> -		      IOCTL_ND_CONNECTOR_NOTIFY_DISCONNECT, 0, 0,
> -		      irp_fhandle.val64);
> -
> -	/*
> -	 * Now fill in the ioctl section.
> -	 */
> -	pkt.ioctl.in.version = ND_VERSION_1;
> -	pkt.ioctl.in.reserved = 0;
> -	pkt.ioctl.in.handle = connector_handle;
> -
> -	ret = hvnd_send_ioctl_pkt(nd_dev, &pkt.hdr, sizeof(pkt), (u64)&pkt);
> -
> -	if (ret)
> -		goto err;
> -
> -	return 0;
> -
> -err:
> -	return ret;
> -}
> -
> -
> -//ASYNCH call
> -int hvnd_connector_disconnect(struct hvnd_dev *nd_dev,
> -			struct hvnd_ucontext *uctx,
> -			u64 connector_handle, struct hvnd_ep_obj *ep)
> -{
> -	struct pkt_nd_connector_disconnect pkt;
> -	int ret;
> -	union ndv_context_handle irp_fhandle;
> -
> -	irp_fhandle.local = ep->local_irp;
> -
> -
> -	hvnd_init_hdr(&pkt.hdr,
> -		      sizeof(pkt) -
> -		      sizeof(struct ndv_packet_hdr_control_1),
> -		      uctx->create_pkt.handle.local,
> -		      uctx->create_pkt.handle.remote,
> -		      IOCTL_ND_CONNECTOR_DISCONNECT, 0, 0, irp_fhandle.val64);
> -
> -	/*
> -	 * Now fill in the ioctl section.
> -	 */
> -	pkt.ioctl.in.version = ND_VERSION_1;
> -	pkt.ioctl.in.reserved = 0;
> -	pkt.ioctl.in.handle = connector_handle;
> -
> -	ret = hvnd_send_ioctl_pkt(nd_dev, &pkt.hdr, sizeof(pkt), (u64)&pkt);
> -
> -	if (ret)
> -		goto err;
> -
> -	return 0;
> -
> -err:
> -	return ret;
> -}
> -
> -/*
> - * QP operations.
> - */
> -int hvnd_create_qp(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
> -		   struct hvnd_qp *qp)
> -{
> -	int ret;
> -	struct pkt_nd_create_qp *pkt;
> -	int num_pfn, num_db_pfn;
> -	int qp_pkt_size;
> -	unsigned int  offset;
> -	u32 ext_data_offset;
> -	u32 ext_data_size;
> -
> -	/*
> -	 * Now create QP.
> -	 * First compute the number of PFNs we need to accomodate:
> -	 * One each for door bell and arm_sn and pages in cq buffer.
> -	 */
> -	offset = offset_in_page(qp->qp_buf);
> -	num_pfn = DIV_ROUND_UP(offset + qp->buf_size, PAGE_SIZE);
> -
> -	offset = offset_in_page(qp->db_addr);
> -	num_db_pfn = DIV_ROUND_UP(offset + 4, PAGE_SIZE);
> -
> -	qp_pkt_size = sizeof(struct pkt_nd_create_qp) +
> -		(num_pfn  * sizeof(u64));
> -
> -	hvnd_debug("CREATE QP, num pfns is %d\n", num_pfn);
> -	hvnd_debug("CREATE QP, num DB pfns is %d\n", num_db_pfn);
> -
> -	pkt = kzalloc(qp_pkt_size, GFP_KERNEL);
> -
> -	if (!pkt)
> -		return -ENOMEM;
> -
> -	hvnd_debug("offset of nd_create_qp is %d\n",
> -		(int)offsetof(struct pkt_nd_create_qp, ioctl.input));
> -
> -	ext_data_offset = offsetof(struct pkt_nd_create_qp, ext_data) -
> -				sizeof(struct ndv_packet_hdr_control_1);
> -
> -	ext_data_size = sizeof(struct create_qp_ext_data) +
> -		(num_pfn  * sizeof(u64));
> -
> -	hvnd_init_hdr(&pkt->hdr,
> -		      qp_pkt_size -
> -		      sizeof(struct ndv_packet_hdr_control_1),
> -		      uctx->create_pkt.handle.local,
> -		      uctx->create_pkt.handle.remote,
> -		      IOCTL_ND_QP_CREATE,
> -		      ext_data_size,
> -		      ext_data_offset,
> -		      0);
> -
> -	/*
> -	 * Now fill out the ioctl section.
> -	 */
> -
> -	pkt->ioctl.input.hdr.version = ND_VERSION_1;
> -
> -	if (qp->max_inline_data > nd_dev->query_pkt.ioctl.ad_info.inline_request_threshold)
> -		qp->max_inline_data = nd_dev->query_pkt.ioctl.ad_info.inline_request_threshold;
> -	pkt->ioctl.input.hdr.cb_max_inline_data = qp->max_inline_data;
> -
> -	hvnd_debug("pkt->ioctl.input.hdr.cb_max_inline_data=%d\n",
> -		   pkt->ioctl.input.hdr.cb_max_inline_data);
> -
> -	pkt->ioctl.input.hdr.ce_mapping_cnt = MLX4_IB_CREATE_QP_MAPPINGS_MAX;
> -	pkt->ioctl.input.hdr.cb_mapping_offset = sizeof(union create_qp_ioctl);
> -
> -	pkt->ioctl.input.hdr.initiator_queue_depth = qp->initiator_q_depth;
> -	pkt->ioctl.input.hdr.max_initiator_request_sge =
> -		qp->initiator_request_sge;
> -
> -	hvnd_debug("recv cq handle is %p\n", (void *)qp->receive_cq_handle);
> -	hvnd_debug("send cq handle is %p\n", (void *)qp->initiator_cq_handle);
> -	hvnd_debug("pd handle is %p\n", (void *)qp->pd_handle);
> -	pkt->ioctl.input.hdr.receive_cq_handle = qp->receive_cq_handle;
> -	pkt->ioctl.input.hdr.initiator_cq_handle = qp->initiator_cq_handle;
> -	pkt->ioctl.input.hdr.pd_handle = qp->pd_handle;
> -
> -
> -	hvnd_debug("ce_mapping cnt is %d\n",
> -		   pkt->ioctl.input.hdr.ce_mapping_cnt);
> -	hvnd_debug("cb_mapping offset is %d\n",
> -		   pkt->ioctl.input.hdr.cb_mapping_offset);
> -
> -	pkt->ioctl.input.receive_queue_depth = qp->receive_q_depth;
> -	pkt->ioctl.input.max_receive_request_sge = qp->receive_request_sge;
> -
> -
> -	pkt->mappings.qp_in.mappings[MLX4_IB_CREATE_QP_BUF].map_memory.map_type = ND_MAP_MEMORY;
> -	pkt->mappings.qp_in.mappings[MLX4_IB_CREATE_QP_BUF].map_memory.access_type = ND_MODIFY_ACCESS;
> -	pkt->mappings.qp_in.mappings[MLX4_IB_CREATE_QP_BUF].map_memory.address = (u64)qp->qp_buf;
> -	pkt->mappings.qp_in.mappings[MLX4_IB_CREATE_QP_BUF].map_memory.cb_length = qp->buf_size;
> -
> -	pkt->mappings.qp_in.mappings[MLX4_IB_CREATE_QP_DB].map_memory.map_type = ND_MAP_MEMORY_COALLESCE;
> -	pkt->mappings.qp_in.mappings[MLX4_IB_CREATE_QP_DB].map_memory.access_type = ND_WRITE_ACCESS;
> -	pkt->mappings.qp_in.mappings[MLX4_IB_CREATE_QP_DB].map_memory.address = (u64)qp->db_addr;
> -	pkt->mappings.qp_in.mappings[MLX4_IB_CREATE_QP_DB].map_memory.cb_length = 4;
> -
> -	pkt->mappings.qp_in.log_sq_bb_count = qp->log_sq_bb_count;
> -	pkt->mappings.qp_in.log_sq_stride = qp->log_sq_stride;
> -	pkt->mappings.qp_in.sq_no_prefetch = qp->sq_no_prefetch;
> -
> -
> -	/*
> -	 * Fill in the extended data.
> -	 */
> -
> -	pkt->ext_data.cnt = 2;
> -	pkt->ext_data.fields[MLX4_IB_CREATE_QP_BUF].size =
> -		sizeof(struct gpa_range) + (num_pfn * sizeof(u64));
> -	pkt->ext_data.fields[MLX4_IB_CREATE_QP_BUF].offset =
> -		offsetof(struct create_qp_ext_data, qpbuf_gpa);
> -
> -	pkt->ext_data.fields[MLX4_IB_CREATE_QP_DB].size =
> -		sizeof(struct qp_db_gpa);
> -	pkt->ext_data.fields[MLX4_IB_CREATE_QP_DB].offset =
> -		offsetof(struct create_qp_ext_data, db_gpa);
> -
> -	/*
> -	 * Fill up the gpa range for qp  buffer.
> -	 */
> -
> -	pkt->ext_data.db_gpa.byte_count = 4; // KYS 8 or 16?
> -	pkt->ext_data.db_gpa.byte_offset = offset_in_page(qp->db_addr);
> -	user_va_init_pfn(&pkt->ext_data.db_gpa.pfn_array[0], qp->db_umem);
> -
> -	pkt->ext_data.qpbuf_gpa.byte_count = qp->buf_size;
> -	pkt->ext_data.qpbuf_gpa.byte_offset = offset_in_page(qp->qp_buf);
> -	user_va_init_pfn(&pkt->ext_data.qpbuf_gpa.pfn_array[0], qp->umem);
> -
> -	ret = hvnd_send_ioctl_pkt(nd_dev, &pkt->hdr, qp_pkt_size, (u64)pkt);
> -
> -	if (ret)
> -		goto cr_qp_err;
> -
> -	/*
> -	 * Copy the necessary response from the host.
> -	 */
> -	qp->qp_handle = pkt->ioctl.resrc_desc.handle;
> -
> -	qp->qpn = pkt->mappings.qp_resp.qpn;
> -	qp->max_send_wr = pkt->mappings.qp_resp.max_send_wr;
> -	qp->max_recv_wr = pkt->mappings.qp_resp.max_recv_wr;
> -	qp->max_send_sge = pkt->mappings.qp_resp.max_send_sge;
> -	qp->max_recv_sge = pkt->mappings.qp_resp.max_recv_sge;
> -
> -
> -	hvnd_debug("qp->max_send_wr=%d max_recv_wr=%d max_send_sge=%d max_recv_sge=%d max_inline_data=%d\n",
> -		   qp->max_send_wr, qp->max_recv_wr, qp->max_send_sge,
> -		   qp->max_recv_sge, qp->max_inline_data);
> -
> -	ret = insert_handle(nd_dev, &nd_dev->qpidr, qp, qp->qpn);
> -
> -	if (ret)
> -		goto cr_qp_err;
> -
> -	hvnd_debug("QP create after success qpn:%d qp:%p handle:%llu\n",
> -		   qp->qpn, qp, qp->qp_handle);
> -
> -cr_qp_err:
> -	kfree(pkt);
> -	return ret;
> -}
> -
> -int hvnd_free_qp(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
> -		 struct hvnd_qp *qp)
> -{
> -	int ret;
> -
> -	ret = hvnd_free_handle(nd_dev, uctx, qp->qp_handle, IOCTL_ND_QP_FREE);
> -	if (ret == 0)
> -		remove_handle(nd_dev, &nd_dev->qpidr, qp->qpn);
> -	return ret;
> -}
> -
> -int hvnd_flush_qp(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
> -		  struct hvnd_qp *qp)
> -{
> -	struct pkt_nd_flush_qp pkt;
> -	int ret;
> -
> -	// KYS try to avoid having to zero everything
> -	memset(&pkt, 0, sizeof(pkt));
> -	hvnd_init_hdr(&pkt.hdr,
> -		      sizeof(pkt) -
> -		      sizeof(struct ndv_packet_hdr_control_1),
> -		      uctx->create_pkt.handle.local,
> -		      uctx->create_pkt.handle.remote,
> -		      IOCTL_ND_QP_FLUSH, 0, 0, 0);
> -
> -	/*
> -	 * Now fill in the ioctl section.
> -	 */
> -	pkt.ioctl.in.version = ND_VERSION_1;
> -	pkt.ioctl.in.reserved = 0;
> -	pkt.ioctl.in.handle = qp->qp_handle;
> -
> -	ret = hvnd_send_ioctl_pkt(nd_dev, &pkt.hdr, sizeof(pkt), (u64)&pkt);
> -
> -	if (ret)
> -		goto err;
> -
> -	return 0;
> -
> -err:
> -	return ret;
> -}
> -
> -
> -int hvnd_bind_nic(struct hvnd_dev *nd_dev, bool un_bind, char *ip_addr,
> -		  char *mac_addr)
> -{
> -	int ret;
> -	int pkt_type = NDV_PKT_ID1_BIND;
> -
> -	/*
> -	 * Send the bind information over to the host.
> -	 * For now, we will have a single ip and MAC address that we
> -	 * will deal with. Down the road we will need to expand support
> -	 * for multiple IP and MAC addresses and also deal with changing
> -	 * IP addresses.
> -	 */
> -
> -	NDV_ADD_PACKET_OPTION(pkt_type, NDV_PACKET_OPTIONS_REQUIRES_PASSIVE);
> -	hvnd_debug("bind packet type is %d ID:%d\n",
> -		   pkt_type, NDV_PACKET_TYPE_ID(pkt_type));
> -	nd_dev->bind_pkt.pkt_hdr.packet_type = pkt_type;
> -
> -	nd_dev->bind_pkt.pkt_hdr.hdr_sz = sizeof(struct ndv_pkt_hdr_bind_1);
> -	hvnd_debug("bind packet size is %d\n",
> -		   (int)sizeof(struct ndv_pkt_hdr_bind_1));
> -	nd_dev->bind_pkt.pkt_hdr.data_sz = 0;
> -	nd_dev->bind_pkt.unbind = un_bind;
> -	nd_dev->bind_pkt.ip_address.address_family = AF_INET;
> -	nd_dev->bind_pkt.ip_address.ipv4.sin_family = AF_INET;
> -	nd_dev->bind_pkt.ip_address.ipv4.sin_port = 0;
> -	nd_dev->bind_pkt.ip_address.ipv4.sin_addr.s_addr = *(unsigned int *)ip_addr;
> -
> -	nd_dev->bind_pkt.phys_addr.length = ETH_ALEN;
> -	memcpy(nd_dev->bind_pkt.phys_addr.addr, mac_addr, ETH_ALEN);
> -
> -	/*
> -	 * This is the adapter handle; needs to be unique for each
> -	 * MAC, ip address tuple.
> -	 */
> -	nd_dev->bind_pkt.guest_id = (u64)nd_dev;
> -
> -	ret = hvnd_send_packet(nd_dev, &nd_dev->bind_pkt,
> -				sizeof(struct ndv_pkt_hdr_bind_1),
> -				(u64)NULL,
> -				true);
> -	return ret;
> -}
> -
> -int hvnd_init_resources(struct hvnd_dev *nd_dev)
> -{
> -	unsigned long mmio_sz;
> -	struct resource *resrc;
> -	int ret = -ENOMEM;
> -
> -	resrc = &iomem_resource;
> -
> -	mmio_sz = nd_dev->hvdev->channel->offermsg.offer.mmio_megabytes *
> -		1024 * 1024;
> -	nd_dev->mmio_sz = mmio_sz;
> -	nd_dev->mmio_resource.name = KBUILD_MODNAME;
> -	nd_dev->mmio_resource.flags = IORESOURCE_MEM | IORESOURCE_BUSY;
> -
> -	ret = allocate_resource(resrc, &nd_dev->mmio_resource,
> -				mmio_sz, 0, -1, mmio_sz, NULL, NULL);
> -
> -	if (ret) {
> -		hvnd_error("Unable to allocate mmio resources\n");
> -		return ret;
> -	}
> -	hvnd_debug("MMIO start is %p\n", (void *)nd_dev->mmio_resource.start);
> -
> -	/*
> -	 * Send the mmio information over to the host.
> -	 */
> -	nd_dev->resources.pkt_hdr.packet_type = NDV_PKT_ID1_INIT_RESOURCES;
> -	nd_dev->resources.pkt_hdr.hdr_sz = sizeof(union ndv_packet_hdr);
> -	nd_dev->resources.pkt_hdr.data_sz = 0;
> -
> -	nd_dev->resources.io_space_sz_mb = mmio_sz;
> -	nd_dev->resources.io_space_start = nd_dev->mmio_resource.start;
> -
> -	ret = hvnd_send_packet(nd_dev, &nd_dev->resources,
> -				sizeof(struct ndv_pkt_hdr_init_resources_1),
> -				(u64)NULL,
> -				true);
> -	return ret;
> -}
> -
> -int hvnd_query_adaptor(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx)
> -{
> -	struct pkt_nd_query_adaptor *pkt;
> -	int ret;
> -	int pkt_type;
> -	struct ib_device_attr *props = &nd_dev->ibdev.attrs;
> -	struct adapter_info_v2 *adap_info = &nd_dev->query_pkt.ioctl.ad_info;
> -
> -	hvnd_debug("Performing Adapter query nd_dev=%p\n", nd_dev);
> -
> -	// check if there is a need to do query
> -	if (nd_dev->query_pkt_set)
> -		return 0;
> -
> -	// need a lock, multiple process can call this at the same time
> -
> -	down(&nd_dev->query_pkt_sem);
> -	if (nd_dev->query_pkt_set) {
> -		up(&nd_dev->query_pkt_sem);
> -		return 0;
> -	}
> -
> -	/*
> -	 * Now query the adaptor.
> -	 */
> -
> -	pkt = &nd_dev->query_pkt;
> -
> -	pkt_type = NDV_PKT_ID1_CONTROL;
> -	NDV_ADD_PACKET_OPTION(pkt_type, NDV_PACKET_OPTIONS_REQUIRES_PASSIVE);
> -
> -	pkt->hdr.pkt_hdr.packet_type = pkt_type;
> -	pkt->hdr.pkt_hdr.hdr_sz = sizeof(struct ndv_packet_hdr_control_1);
> -	pkt->hdr.pkt_hdr.data_sz = sizeof(struct pkt_nd_query_adaptor) -
> -				   sizeof(struct ndv_packet_hdr_control_1);
> -
> -
> -	pkt->hdr.file_handle.local = uctx->file_handle.local;
> -	pkt->hdr.file_handle.remote = uctx->file_handle.remote;
> -
> -	pkt->hdr.irp_handle.val64 = 0;
> -
> -	pkt->hdr.io_cntrl_code = IOCTL_ND_ADAPTER_QUERY;
> -	pkt->hdr.output_buf_sz = sizeof(struct nd_adap_query_ioctl);
> -	pkt->hdr.input_buf_sz = sizeof(struct nd_adap_query_ioctl);
> -	pkt->hdr.input_output_buf_offset = 0;
> -	memset(&pkt->ioctl.ad_q, 0, sizeof(struct nd_adap_query_ioctl));
> -
> -	pkt->ioctl.ad_q.version = ND_VERSION_1;
> -	pkt->ioctl.ad_q.info_version = ND_VERSION_2;
> -	pkt->ioctl.ad_q.adapter_handle = uctx->adaptor_hdl;
> -
> -	ret = hvnd_send_packet(nd_dev, pkt,
> -				sizeof(struct pkt_nd_query_adaptor),
> -				(unsigned long)pkt, true);
> -
> -	hvnd_debug("pkt->ioctl.ad_info.inline_request_threshold=%d\n",
> -		   pkt->ioctl.ad_info.inline_request_threshold);
> -	nd_dev->query_pkt_set = true;
> -
> -	// how about host returning PENDING
> -	up(&nd_dev->query_pkt_sem);
> -
> -	if (ret)
> -		return ret;
> -
> -	hvnd_debug("Query Adaptor Succeeded\n");
> -
> -	/*
> -	 * Cache the relevant properties out.
> -	 */
> -	props->fw_ver = 0;
> -	props->device_cap_flags    = 0;
> -	props->vendor_id           =  0x15b3;
> -	props->vendor_part_id      = adap_info->device_id;
> -	props->max_mr_size         = ~0ull;
> -	props->page_size_cap       = PAGE_SIZE;
> -	props->max_qp              = 16384;
> -	props->max_qp_wr           = min(adap_info->max_recv_q_depth,
> -					 adap_info->max_initiator_q_depth);
> -	props->max_sge             = min(adap_info->max_initiator_sge,
> -					 adap_info->max_recv_sge);
> -	props->max_cq              = 0x1FFFF;
> -	props->max_cqe             = adap_info->max_completion_q_depth;
> -	props->max_mr              = 16384;
> -	props->max_pd              = 16384;
> -	props->max_qp_rd_atom      = adap_info->max_inbound_read_limit;
> -	props->max_qp_init_rd_atom = adap_info->max_outbound_read_limit;
> -	props->max_res_rd_atom     = props->max_qp_rd_atom * props->max_qp;
> -	props->max_srq             = 16384;
> -	props->max_srq_wr          = adap_info->max_recv_q_depth;
> -	props->max_srq_sge         = adap_info->max_recv_sge;
> -	return 0;
> -}
> -
> -
> -int  hvnd_create_pd(struct hvnd_ucontext *uctx, struct hvnd_dev *nd_dev,
> -		    struct hvnd_ib_pd *hvnd_pd)
> -{
> -	struct pkt_nd_pd_create *pkt = &uctx->pd_cr_pkt;
> -	int ret;
> -	int pkt_type;
> -
> -	hvnd_debug("Create Protection Domain\n");
> -
> -	pkt_type = NDV_PKT_ID1_CONTROL;
> -	NDV_ADD_PACKET_OPTION(pkt_type, NDV_PACKET_OPTIONS_REQUIRES_PASSIVE);
> -
> -	pkt->hdr.pkt_hdr.packet_type = pkt_type;
> -	pkt->hdr.pkt_hdr.hdr_sz = sizeof(struct ndv_packet_hdr_control_1);
> -	pkt->hdr.pkt_hdr.data_sz = sizeof(struct pkt_nd_pd_create) -
> -				   sizeof(struct ndv_packet_hdr_control_1);
> -
> -	hvnd_debug("pdcreate packet size: %d\n",
> -		   (int)sizeof(struct pkt_nd_pd_create));
> -	hvnd_debug("pdcreate hdr size: %d\n",
> -		   (int)sizeof(struct ndv_packet_hdr_control_1));
> -	hvnd_debug("pdcreate data size: %d\n", pkt->hdr.pkt_hdr.data_sz);
> -
> -	pkt->hdr.file_handle.local = uctx->create_pkt.handle.local;
> -	pkt->hdr.file_handle.remote = uctx->create_pkt.handle.remote;
> -
> -	hvnd_debug("create pd uctx is %p\n", uctx);
> -	hvnd_debug("create pd local file is %d\n",
> -		   uctx->create_pkt.handle.local);
> -	hvnd_debug("create pd local file is %d\n",
> -		   uctx->create_pkt.handle.remote);
> -
> -	pkt->hdr.irp_handle.val64 = 0;
> -	pkt->hdr.io_cntrl_code = IOCTL_ND_PD_CREATE;
> -
> -	pkt->hdr.output_buf_sz = sizeof(struct nd_create_pd_ioctl);
> -	pkt->hdr.input_buf_sz =  sizeof(struct nd_create_pd_ioctl);
> -	pkt->hdr.input_output_buf_offset = 0;
> -
> -	hvnd_debug("output/input buf size: %d\n", pkt->hdr.output_buf_sz);
> -
> -	/*
> -	 * Fill the ioctl section.
> -	 */
> -	pkt->ioctl.in.version = ND_VERSION_1;
> -	pkt->ioctl.in.reserved = 0;
> -	pkt->ioctl.in.handle = uctx->adaptor_hdl;
> -
> -
> -	ret = hvnd_send_packet(nd_dev, pkt,
> -				sizeof(struct pkt_nd_pd_create),
> -				(unsigned long)pkt, true);
> -
> -	if (ret)
> -		return ret;
> -
> -	if (pkt->hdr.pkt_hdr.status != 0) {
> -		hvnd_error("Create PD failed; status is %d\n",
> -			pkt->hdr.pkt_hdr.status);
> -		return -EINVAL;
> -	}
> -	if (pkt->hdr.io_status != 0) {
> -		hvnd_error("Create PD failed;io status is %d\n",
> -			pkt->hdr.io_status);
> -		return -EINVAL;
> -	}
> -
> -	hvnd_debug("Create PD Succeeded\n");
> -
> -	hvnd_debug("pd_handle is %p\n", (void *)pkt->ioctl.resp.pd_handle);
> -	hvnd_debug("pdn is %d\n", (int)pkt->ioctl.resp.pdn);
> -
> -	hvnd_pd->pdn = pkt->ioctl.resp.pdn;
> -	hvnd_pd->handle = pkt->ioctl.out_handle;
> -
> -	return 0;
> -}
> -
> -int hvnd_cancel_io(struct hvnd_ep_obj *ep_object)
> -{
> -	struct pkt_nd_cancel_io pkt;
> -	int ret;
> -	u32 ioctl;
> -
> -	switch (ep_object->type) {
> -	case ND_LISTENER:
> -		hvnd_debug("LISTENER I/O Cancelled\n");
> -		ioctl = IOCTL_ND_LISTENER_CANCEL_IO;
> -		break;
> -	case ND_CONNECTOR:
> -		hvnd_debug("CONNECTOR I/O Cancelled\n");
> -		ioctl = IOCTL_ND_CONNECTOR_CANCEL_IO;
> -		break;
> -	case ND_MR:
> -		hvnd_debug("MR I/O Cancelled\n");
> -		ioctl = IOCTL_ND_MR_CANCEL_IO;
> -		break;
> -	case ND_CQ:
> -		hvnd_debug("CQ I/O Cancelled\n");
> -		ioctl = IOCTL_ND_CQ_CANCEL_IO;
> -		break;
> -	default:
> -		hvnd_error("UNKNOWN object type\n");
> -		return -EINVAL;
> -	}
> -
> -	// KYS try to avoid having to zero everything
> -	memset(&pkt, 0, sizeof(pkt));
> -	hvnd_init_hdr(&pkt.hdr,
> -		      sizeof(pkt) -
> -		      sizeof(struct ndv_packet_hdr_control_1),
> -		      ep_object->uctx->create_pkt.handle.local,
> -		      ep_object->uctx->create_pkt.handle.remote,
> -		      ioctl, 0, 0, 0);
> -
> -	/*
> -	 * Now fill in the ioctl section.
> -	 */
> -	pkt.ioctl.in.version = ND_VERSION_1;
> -	pkt.ioctl.in.reserved = 0;
> -	pkt.ioctl.in.handle = ep_object->ep_handle;
> -	hvnd_debug("cancel io handle is %p\n", (void *)ep_object->ep_handle);
> -
> -	ret = hvnd_send_ioctl_pkt(ep_object->nd_dev, &pkt.hdr,
> -				sizeof(pkt),
> -				(u64)&pkt);
> -
> -	if (ret)
> -		goto err;
> -
> -	/*
> -	 * Now that we have cancelled all I/Os,
> -	 */
> -
> -	return 0;
> -
> -err:
> -	hvnd_error("cancel I/O operation failed\n");
> -	return ret;
> -}
> -
> -
> -int hvnd_free_handle(struct hvnd_dev *nd_dev, struct hvnd_ucontext *uctx,
> -			u64 handle, u32 ioctl)
> -{
> -	struct pkt_nd_free_handle pkt;
> -	int ret;
> -
> -	hvnd_debug("Freeing handle ioctl is %s; handle is %p\n",
> -		hvnd_get_op_name(ioctl), (void *)handle);
> -
> -	hvnd_debug("uctx is %p\n", uctx);
> -	hvnd_debug("nd_dev is %p\n", nd_dev);
> -
> -	// KYS try to avoid having to zero everything
> -	memset(&pkt, 0, sizeof(pkt));
> -	hvnd_init_hdr(&pkt.hdr,
> -		      sizeof(pkt) -
> -		      sizeof(struct ndv_packet_hdr_control_1),
> -		      uctx->create_pkt.handle.local,
> -		      uctx->create_pkt.handle.remote,
> -		      ioctl, 0, 0, 0);
> -
> -	/*
> -	 * Now fill in the ioctl section.
> -	 */
> -	pkt.ioctl.in.version = ND_VERSION_1;
> -	pkt.ioctl.in.reserved = 0;
> -	pkt.ioctl.in.handle = handle;
> -
> -	ret = hvnd_send_ioctl_pkt(nd_dev, &pkt.hdr, sizeof(pkt), (u64)&pkt);
> -
> -	if (ret)
> -		goto err;
> -
> -	return 0;
> -
> -err:
> -	hvnd_error("%s: ret=%d\n", __func__, ret);
> -	return ret;
> -}
> -
> -int hvnd_negotiate_version(struct hvnd_dev *nd_dev)
> -{
> -	union ndv_packet_init *pkt = &nd_dev->init_pkt;
> -	int ret;
> -
> -	nd_dev->negotiated_version = NDV_PROTOCOL_VAERSION_INVALID;
> -
> -	pkt->packet_type = NDV_PACKET_TYPE_INIT;
> -	pkt->protocol_version = NDV_PROTOCOL_VERSION_CURRENT;
> -	pkt->flags = 0; // KYS are the flags 0?
> -
> -	ret = hvnd_send_packet(nd_dev, pkt,
> -			       sizeof(union ndv_packet_init), (u64)NULL, true);
> -
> -	return ret;
> -}
> -
> -void hvnd_callback(void *context)
> -{
> -	struct hv_device *dev = context;
> -	struct hvnd_dev *nd_dev = hv_get_drvdata(dev);
> -	int copy_sz = 0;
> -	struct ndv_packet_hdr_control_1 *ctrl_hdr;
> -	union ndv_packet_init *pkt_init;
> -	u32 recvlen;
> -	u32 local_irp;
> -	u64 requestid;
> -	u32 *pkt_type;
> -	u32 pkt_id;
> -	struct hvnd_ep_obj *ep_object;
> -	struct incoming_pkt *incoming_pkt; /* Used only for asynch calls */
> -	char *incoming_pkt_start;
> -	struct vmpacket_descriptor *desc;
> -	int status;
> -	struct hvnd_cookie *hvnd_cookie;
> -	unsigned long flags;
> -
> -	vmbus_recvpacket_raw(dev->channel, hvnd_recv_buffer,
> -			 (PAGE_SIZE * 4), &recvlen, &requestid);
> -
> -	if (recvlen <= 0)
> -		return;
> -
> -	desc = (struct vmpacket_descriptor *)hvnd_recv_buffer;
> -	incoming_pkt_start = hvnd_recv_buffer + (desc->offset8 << 3);
> -	recvlen -= desc->offset8 << 3;
> -
> -	pkt_type = (u32 *)incoming_pkt_start;
> -	pkt_id = *pkt_type;
> -	if (pkt_id != NDV_PACKET_TYPE_INIT)
> -		pkt_id = NDV_PACKET_TYPE_ID(pkt_id);
> -
> -	switch (pkt_id) {
> -	case NDV_PACKET_TYPE_INIT:
> -		/*
> -		 * Host is responding to our init packet.
> -		 */
> -		pkt_init = (union ndv_packet_init *)incoming_pkt_start;
> -		nd_dev->negotiated_version = pkt_init->protocol_version;
> -		copy_sz = 0;
> -		break;
> -
> -	case NDV_PKT_ID1_INIT_RESOURCES:
> -		copy_sz = 0;
> -		break;
> -
> -	case NDV_PKT_ID1_BIND:
> -		nd_dev->bind_pkt.pkt_hdr.status =
> -			((union ndv_packet_hdr *) incoming_pkt_start)->status;
> -		copy_sz = 0;
> -		break;
> -
> -	case NDV_PKT_ID1_COMPLETE:
> -		ctrl_hdr = (struct ndv_packet_hdr_control_1 *)incoming_pkt_start;
> -		status = ctrl_hdr->io_status;
> -
> -		local_irp = ctrl_hdr->irp_handle.local;
> -		ep_object = (struct hvnd_ep_obj *)map_irp_to_ctx(nd_dev,
> -								 local_irp);
> -
> -		if (!ep_object) {
> -			hvnd_error("irp could not be mapped; irp is %d ioctl is %s",
> -				local_irp,
> -				hvnd_get_op_name(ctrl_hdr->io_cntrl_code));
> -			goto complete;
> -		}
> -
> -		if (ctrl_hdr->io_cntrl_code != IOCTL_ND_CQ_NOTIFY)
> -			hvnd_debug("completion packet; iostatus is %x, ioctl is %s",
> -				   ctrl_hdr->io_status,
> -				   hvnd_get_op_name(ctrl_hdr->io_cntrl_code));
> -
> -		switch (ctrl_hdr->io_cntrl_code) {
> -
> -		case IOCTL_ND_CQ_NOTIFY:
> -			hvnd_process_cq_event_complete(ep_object, status);
> -
> -			ep_del_work_pending(ep_object);
> -			goto complete;
> -
> -		case IOCTL_ND_CONNECTOR_ACCEPT:
> -
> -			hvnd_process_connector_accept(ep_object, status);
> -
> -			ep_del_work_pending(ep_object);
> -			goto complete;
> -
> -		case IOCTL_ND_CONNECTOR_DISCONNECT:
> -			hvnd_debug("disconnected: ep opj is %p; status: %d\n",
> -				   ep_object, status);
> -			hvnd_process_disconnect(ep_object, status);
> -
> -			ep_del_work_pending(ep_object);
> -			goto complete;
> -
> -		default:
> -			break;
> -		}
> -
> -		/*
> -		 * This is the completion notification;
> -		 * the IRP cookie is the state through which
> -		 * we will invoke the callback.
> -		 */
> -		incoming_pkt = kmalloc(recvlen + sizeof(struct incoming_pkt),
> -				       GFP_ATOMIC);
> -		if (incoming_pkt == NULL) {
> -			hvnd_error("Could not alloc memory in callback\n");
> -			ep_del_work_pending(ep_object);
> -			goto complete;
> -		}
> -		memcpy(incoming_pkt->pkt, incoming_pkt_start, recvlen);
> -
> -		spin_lock_irqsave(&ep_object->incoming_pkt_list_lock, flags);
> -		list_add_tail(&incoming_pkt->list_entry,
> -			      &ep_object->incoming_pkt_list);
> -		spin_unlock_irqrestore(&ep_object->incoming_pkt_list_lock,
> -				       flags);
> -
> -		schedule_work(&ep_object->wrk.work);
> -
> -		goto complete;
> -
> -	case NDV_PKT_ID1_CREATE:
> -		copy_sz = sizeof(struct ndv_pkt_hdr_create_1);
> -		break;
> -
> -	case NDV_PKT_ID1_CLEANUP:
> -		copy_sz = sizeof(struct ndv_pkt_hdr_cleanup_1);
> -		break;
> -
> -	case NDV_PKT_ID1_CONTROL:
> -		ctrl_hdr = (struct ndv_packet_hdr_control_1 *)incoming_pkt_start;
> -		status = ctrl_hdr->io_status;
> -
> -		if (ctrl_hdr->io_cntrl_code != IOCTL_ND_CQ_NOTIFY)
> -			hvnd_debug("packet; iostatus is %x ioctl is %s",
> -				ctrl_hdr->io_status, hvnd_get_op_name(ctrl_hdr->io_cntrl_code));
> -
> -		switch (ctrl_hdr->io_cntrl_code) {
> -
> -		case IOCTL_ND_PROVIDER_INIT:
> -			copy_sz = sizeof(struct pkt_nd_provider_ioctl);
> -			break;
> -
> -		case IOCTL_ND_PROVIDER_BIND_FILE:
> -			copy_sz = sizeof(struct pkt_nd_provider_ioctl);
> -			break;
> -
> -		case IOCTL_ND_ADAPTER_OPEN:
> -			copy_sz = sizeof(struct pkt_nd_open_adapter);
> -			break;
> -
> -		case IOCTL_ND_ADAPTER_CLOSE:
> -			copy_sz = sizeof(struct pkt_nd_free_handle);
> -			break;
> -
> -		case IOCTL_ND_ADAPTER_QUERY:
> -			copy_sz = sizeof(struct pkt_nd_query_adaptor);
> -			break;
> -
> -		case IOCTL_ND_PD_CREATE:
> -			copy_sz = sizeof(struct pkt_nd_pd_create);
> -			break;
> -
> -		case IOCTL_ND_PD_FREE:
> -			copy_sz = sizeof(struct pkt_nd_free_handle);
> -			break;
> -
> -		case IOCTL_ND_CQ_CREATE:
> -			copy_sz = sizeof(struct pkt_nd_create_cq);
> -			break;
> -
> -		case IOCTL_ND_CQ_FREE:
> -			copy_sz = sizeof(struct pkt_nd_free_cq);
> -			break;
> -
> -		case IOCTL_ND_CQ_NOTIFY: //FIXME check ep stop state
> -			local_irp = ctrl_hdr->irp_handle.local;
> -			ep_object = (struct hvnd_ep_obj *)
> -				map_irp_to_ctx(nd_dev, local_irp);
> -			if (!ep_object) {
> -				hvnd_error("irp could not be mapped\n");
> -				goto complete;
> -				return;
> -			}
> -			copy_sz = sizeof(struct pkt_nd_notify_cq);
> -			hvnd_process_cq_event_pending(ep_object, status);
> -			goto complete;
> -			return;
> -
> -		case IOCTL_ND_LISTENER_CREATE:
> -			copy_sz = sizeof(struct pkt_nd_cr_listener);
> -			break;
> -
> -		case IOCTL_ND_LISTENER_FREE:
> -			copy_sz = sizeof(struct pkt_nd_free_listener);
> -			break;
> -
> -		case IOCTL_ND_QP_FREE:
> -			copy_sz = sizeof(struct pkt_nd_free_handle);
> -			break;
> -
> -		case IOCTL_ND_CONNECTOR_CANCEL_IO:
> -		case IOCTL_ND_MR_CANCEL_IO:
> -		case IOCTL_ND_CQ_CANCEL_IO:
> -		case IOCTL_ND_LISTENER_CANCEL_IO:
> -			copy_sz = sizeof(struct pkt_nd_cancel_io);
> -			break;
> -
> -		case IOCTL_ND_LISTENER_BIND:
> -			copy_sz = sizeof(struct pkt_nd_bind_listener);
> -			break;
> -
> -		case IOCTL_ND_LISTENER_LISTEN:
> -			copy_sz = sizeof(struct pkt_nd_listen_listener);
> -			break;
> -
> -		case IOCTL_ND_LISTENER_GET_ADDRESS:
> -			copy_sz = sizeof(struct pkt_nd_get_addr_listener);
> -			break;
> -
> -		case IOCTL_ND_LISTENER_GET_CONNECTION_REQUEST:
> -			copy_sz = sizeof(struct pkt_nd_get_connection_listener);
> -			goto complete; // non-block
> -
> -		case IOCTL_ND_CONNECTOR_CREATE:
> -			copy_sz = sizeof(struct pkt_nd_cr_connector);
> -			break;
> -
> -		case IOCTL_ND_CONNECTOR_FREE:
> -			copy_sz = sizeof(struct pkt_nd_free_connector);
> -			break;
> -
> -		case IOCTL_ND_CONNECTOR_BIND:
> -			copy_sz = sizeof(struct pkt_nd_free_connector);
> -			break;
> -
> -		// KYS: ALERT: ASYNCH Operation
> -		case IOCTL_ND_CONNECTOR_CONNECT:
> -			copy_sz = sizeof(struct pkt_nd_connector_connect);
> -			goto complete; //non-block
> -
> -		case IOCTL_ND_CONNECTOR_COMPLETE_CONNECT:
> -			copy_sz = sizeof(struct pkt_nd_connector_connect_complete);
> -			break;
> -
> -		// KYS: ALERT: ASYNCH Operation
> -		case IOCTL_ND_CONNECTOR_ACCEPT:
> -			copy_sz = sizeof(struct pkt_nd_connector_accept);
> -			goto complete; //non-block
> -
> -		case IOCTL_ND_CONNECTOR_REJECT:
> -			copy_sz = sizeof(struct pkt_nd_connector_reject);
> -			break;
> -
> -		case IOCTL_ND_CONNECTOR_GET_READ_LIMITS:
> -			copy_sz = sizeof(struct pkt_nd_connector_get_rd_limits);
> -			break;
> -
> -		case IOCTL_ND_CONNECTOR_GET_PRIVATE_DATA:
> -			copy_sz = sizeof(struct pkt_nd_connector_get_priv_data);
> -			break;
> -
> -		case IOCTL_ND_CONNECTOR_GET_PEER_ADDRESS:
> -			copy_sz = sizeof(struct pkt_nd_connector_get_peer_addr);
> -			break;
> -
> -		case IOCTL_ND_CONNECTOR_GET_ADDRESS:
> -			copy_sz = sizeof(struct pkt_nd_connector_get_addr);
> -			break;
> -
> -		// KYS: ALERT: ASYNCH Operation
> -		case IOCTL_ND_CONNECTOR_NOTIFY_DISCONNECT:
> -			copy_sz = sizeof(struct pkt_nd_connector_notify_disconnect);
> -			goto complete; //non-block
> -
> -		// KYS: ALERT: ASYNCH Operation
> -		case IOCTL_ND_CONNECTOR_DISCONNECT:
> -			hvnd_debug("IOCTL_ND_CONNECTOR_DISCONNECT\n");
> -			copy_sz = sizeof(struct pkt_nd_connector_notify_disconnect);
> -			goto complete; // non-block
> -
> -		case IOCTL_ND_QP_CREATE:
> -			copy_sz = sizeof(struct pkt_nd_create_qp);
> -			break;
> -
> -		case IOCTL_ND_MR_CREATE:
> -			copy_sz = sizeof(struct pkt_nd_create_mr);
> -			break;
> -
> -		case IOCTL_ND_MR_FREE:
> -			copy_sz = sizeof(struct pkt_nd_free_handle);
> -			break;
> -
> -		case IOCTL_ND_MR_REGISTER:
> -			copy_sz = sizeof(struct pkt_nd_register_mr);
> -			break;
> -
> -		case IOCTL_ND_MR_DEREGISTER:
> -			copy_sz = sizeof(struct pkt_nd_deregister_mr);
> -			break;
> -
> -		case IOCTL_ND_ADAPTER_QUERY_ADDRESS_LIST:
> -			copy_sz = sizeof(struct pkt_query_addr_list);
> -			break;
> -
> -		case IOCTL_ND_QP_FLUSH:
> -			copy_sz = sizeof(struct pkt_nd_flush_qp);
> -			break;
> -
> -		default:
> -			hvnd_warn("Got unknown ioctl: %d\n",
> -				ctrl_hdr->io_cntrl_code);
> -			copy_sz = 0;
> -			break;
> -		}
> -
> -		break;
> -	default:
> -		hvnd_warn("Got an unknown packet type %d\n", *pkt_type);
> -		break;
> -	}
> -
> -	hvnd_cookie = (struct hvnd_cookie *)requestid;
> -	memcpy(hvnd_cookie->pkt, incoming_pkt_start, copy_sz);
> -	complete(&hvnd_cookie->host_event);
> -
> -complete:
> -	/* send out ioctl completion patcket */
> -	if (desc->flags & VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED) {
> -		int retry = 5;
> -
> -		while (true) {
> -			int ret;
> -
> -			ret = vmbus_sendpacket(dev->channel, NULL, 0,
> -					       requestid, VM_PKT_COMP, 0);
> -			if (ret == 0) {
> -				break;
> -			} else if (ret == -EAGAIN) {
> -				if (--retry == 0) {
> -					hvnd_error("give up retrying send completion packet\n");
> -					break;
> -				}
> -				hvnd_warn("retrying send completion packet\n");
> -				udelay(100);
> -			} else {
> -				hvnd_error("unable to send completion packet ret=%d\n",
> -					   ret);
> -				break;
> -			}
> -		}
> -	}
> -
> -}
> diff --git a/drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142/vmbus_rdma.h b/drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142/vmbus_rdma.h
> deleted file mode 100644
> index 78e534fa8748..000000000000
> --- a/drivers/infiniband/hw/vmbus-rdma/vmbus-rdma-142/vmbus_rdma.h
> +++ /dev/null
> @@ -1,2202 +0,0 @@
> -/*
> - * Copyright (c) 2014, Microsoft Corporation.
> - *
> - * Author:
> - *   K. Y. Srinivasan <kys@microsoft.com>
> - *
> - * This program is free software; you can redistribute it and/or modify it
> - * under the terms of the GNU General Public License version 2 as published
> - * by the Free Software Foundation.
> - *
> - * This program is distributed in the hope that it will be useful, but
> - * WITHOUT ANY WARRANTY; without even the implied warranty of
> - * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
> - * NON INFRINGEMENT.  See the GNU General Public License for more
> - * details.
> - *
> - * Bug fixes/enhancements: Long Li <longli@microsoft.com>
> - */
> -
> -
> -#ifndef _VMBUS_RDMA_H
> -#define _VMBUS_RDMA_H
> -
> -
> -#include <linux/in.h>
> -#include <linux/in6.h>
> -#include <rdma/ib_verbs.h>
> -#include <linux/idr.h>
> -#include <linux/if_ether.h>
> -
> -/* NetworkDirect version Numbers.
> - */
> -#define ND_VERSION_1    0x1
> -#define ND_VERSION_2    0x20000
> -
> -#ifndef NDVER
> -#define NDVER      ND_VERSION_2
> -#endif
> -
> -#define ND_ADAPTER_FLAG_IN_ORDER_DMA_SUPPORTED              0x00000001
> -#define ND_ADAPTER_FLAG_CQ_INTERRUPT_MODERATION_SUPPORTED   0x00000004
> -#define ND_ADAPTER_FLAG_MULTI_ENGINE_SUPPORTED              0x00000008
> -#define ND_ADAPTER_FLAG_CQ_RESIZE_SUPPORTED                 0x00000100
> -#define ND_ADAPTER_FLAG_LOOPBACK_CONNECTIONS_SUPPORTED      0x00010000
> -
> -#define ND_CQ_NOTIFY_ERRORS                                 0
> -#define ND_CQ_NOTIFY_ANY                                    1
> -#define ND_CQ_NOTIFY_SOLICITED                              2
> -
> -#define ND_MR_FLAG_ALLOW_LOCAL_WRITE                        0x00000001
> -#define ND_MR_FLAG_ALLOW_REMOTE_READ                        0x00000002
> -#define ND_MR_FLAG_ALLOW_REMOTE_WRITE                       0x00000005
> -#define ND_MR_FLAG_RDMA_READ_SINK                           0x00000008
> -#define ND_MR_FLAG_DO_NOT_SECURE_VM                         0x80000000
> -
> -#define ND_OP_FLAG_SILENT_SUCCESS                           0x00000001
> -#define ND_OP_FLAG_READ_FENCE                               0x00000002
> -#define ND_OP_FLAG_SEND_AND_SOLICIT_EVENT                   0x00000004
> -#define ND_OP_FLAG_ALLOW_READ                               0x00000008
> -#define ND_OP_FLAG_ALLOW_WRITE                              0x00000010
> -
> -#if NDVER >= ND_VERSION_2
> -#define ND_OP_FLAG_INLINE                                   0x00000020
> -#endif
> -
> -#define ND_AF_INET6	23
> -#define IF_MAX_ADDR_LENGTH 32
> -
> -struct group_affinity {
> -	u64 mask; //KYS: usually 0
> -	u16 group; // KYS usually -1
> -	u16 reserved[3];
> -};
> -
> -struct if_physical_addr {
> -	u16 length;
> -	u8 addr[IF_MAX_ADDR_LENGTH];
> -};
> -
> -struct adapter_info_v2 {
> -	u32 info_version;
> -	u16 vendor_id;
> -	u16 device_id;
> -	u64 adapter_id;
> -	size_t max_registration_size;
> -	size_t max_window_size;
> -	u32 max_initiator_sge;
> -	u32 max_recv_sge;
> -	u32 max_read_sge;
> -	u32 max_transfer_length;
> -	u32 max_inline_data_size;
> -	u32 max_inbound_read_limit;
> -	u32 max_outbound_read_limit;
> -	u32 max_recv_q_depth;
> -	u32 max_initiator_q_depth;
> -	u32 max_shared_recv_q_depth;
> -	u32 max_completion_q_depth;
> -	u32 inline_request_threshold;
> -	u32 large_request_threshold;
> -	u32 max_caller_data;
> -	u32 max_callee_data;
> -	u32 adapter_flags;
> -} __packed;
> -
> -struct nd2_adapter_info_32 { //KYS: Check what this is
> -	u32 info_version;
> -	u16 vendor_id;
> -	u16 devic_id;
> -	u64 adapter_id;
> -	u32 max_registration_size;
> -	u32 max_window_size;
> -	u32 max_initiator_sge;
> -	u32 max_recv_sge;
> -	u32 max_read_sge;
> -	u32 max_transfer_length;
> -	u32 max_inline_data_size;
> -	u32 max_inbound_read_limit;
> -	u32 max_outbound_read_limit;
> -	u32 max_recv_q_depth;
> -	u32 max_initiator_q_depth;
> -	u32 max_shared_recv_q_depth;
> -	u32 max_completion_q_depth;
> -	u32 inline_request_threshold;
> -	u32 large_request_threshold;
> -	u32 max_caller_data;
> -	u32 max_callee_data;
> -	u32 adapter_flags;
> -} __packed;
> -
> -enum nd2_request_type {
> -	ND2_RT_RECEIVE,
> -	ND2_RT_SEND,
> -	ND2_RT_BIND,
> -	ND2_RT_INVALIDATE,
> -	ND2_RT_READ,
> -	ND2_RT_WRITE
> -};
> -
> -struct nd2_result {
> -	u32 status;
> -	u32 bytes_transferred;
> -	void *qp_ctx;
> -	void *request_ctx;
> -	enum nd2_request_type request_type;
> -} __packed;
> -
> -struct nd2_sge {
> -	void *buffer;
> -	u32 buffer_length;
> -	u32 mr_token;
> -} __packed;
> -
> -/*
> - * The communication with the host via ioctls using VMBUS
> - * as the transport.
> - */
> -
> -#define ND_IOCTL_VERSION    1
> -
> -enum nd_mapping_type {
> -	ND_MAP_IOSPACE,
> -	ND_MAP_MEMORY,
> -	ND_MAP_MEMORY_COALLESCE,
> -	ND_MAP_PAGES,
> -	ND_MAP_PAGES_COALLESCE,
> -	ND_UNMAP_IOSPACE,
> -	ND_UNMAP_MEMORY,
> -	ND_MAX_MAP_TYPE
> -};
> -
> -enum nd_caching_type {
> -	ND_NON_CACHED = 0,
> -	ND_CACHED,
> -	ND_WRITE_COMBINED,
> -	ND_MAX_CACHE_TYPE
> -};
> -
> -enum nd_aceess_type {
> -	ND_READ_ACCESS = 0,
> -	ND_WRITE_ACCESS,
> -	ND_MODIFY_ACCESS
> -};
> -
> -struct nd_map_io_space {
> -	enum nd_mapping_type map_type;
> -	enum nd_caching_type cache_type;
> -	u32 cb_length;
> -};
> -
> -struct nd_map_memory {
> -	enum nd_mapping_type map_type;
> -	enum nd_aceess_type access_type;
> -	u64 address;
> -	u32 cb_length;
> -};
> -
> -struct nd_mapping_id {
> -	enum nd_mapping_type map_type;
> -	u64 id;
> -};
> -
> -struct ndk_map_pages {
> -	struct nd_map_memory header;
> -	u32 page_offset;
> -};
> -
> -union nd_mapping {
> -	enum nd_mapping_type map_type;
> -	struct nd_map_io_space map_io_space;
> -	struct nd_map_memory map_memory;
> -	struct nd_mapping_id mapping_id;
> -	struct ndk_map_pages map_pages;
> -};
> -
> -struct nd_mapping_result {
> -	u64 id;
> -	u64 info;
> -};
> -
> -struct nd_resource_descriptor {
> -	u64 handle;
> -	u32 ce_mapping_results;
> -	u32 cb_mapping_results_offset;
> -};
> -
> -struct nd_handle {
> -	u32 version;
> -	u32 reserved;
> -	u64 handle;
> -};
> -
> -union nd_sockaddr_inet {
> -	struct sockaddr_in ipv4;
> -	struct sockaddr_in6 ipv6;
> -	u16 address_family; //KYS how is this supposed to work?
> -};
> -
> -struct nd_address_element {
> -	union nd_sockaddr_inet addr;
> -	char mac_addr[ETH_ALEN];
> -};
> -
> -struct nd_resolve_address {
> -	u32 version;
> -	u32 reserved;
> -	union nd_sockaddr_inet address;
> -};
> -
> -struct nd_open_adapter {
> -	u32 version;
> -	u32 reserved;
> -	u32 ce_mapping_cnt;
> -	u32 cb_mapping_offset;
> -	u64 adapter_id;
> -};
> -
> -struct nd_adapter_query {
> -	u32 version;
> -	u32 info_version;
> -	u64 adapter_handle;
> -};
> -
> -struct nd_create_cq {
> -	u32 version;
> -	u32 queue_depth;
> -	u32 ce_mapping_cnt;
> -	u32 cb_mapping_offset;
> -	u64 adapter_handle;
> -	struct group_affinity affinity;
> -};
> -
> -struct nd_create_srq {
> -	u32 version;
> -	u32 queue_depth;
> -	u32 ce_mapping_cnt;
> -	u32 cb_mapping_offset;
> -	u32 max_request_sge;
> -	u32 notify_threshold;
> -	u64 pd_handle;
> -	struct group_affinity affinity;
> -};
> -
> -struct nd_create_qp_hdr {
> -	u32 version;
> -	u32 cb_max_inline_data;
> -	u32 ce_mapping_cnt;
> -	u32 cb_mapping_offset; //KYS: what is this prefix - ce/cb
> -	u32 initiator_queue_depth;
> -	u32 max_initiator_request_sge;
> -	u64 receive_cq_handle;
> -	u64 initiator_cq_handle;
> -	u64 pd_handle;
> -};
> -
> -struct nd_create_qp {
> -	struct nd_create_qp_hdr hdr;
> -	u32 receive_queue_depth;
> -	u32 max_receive_request_sge;
> -};
> -
> -struct nd_create_qp_with_srq {
> -	struct nd_create_qp_hdr header;
> -	u64 srq_handle;
> -};
> -
> -struct nd_srq_modify {
> -	u32 version;
> -	u32 queue_depth;
> -	u32 ce_mapping_cnt;
> -	u32 cb_mapping_offset;
> -	u32 notify_threshold;
> -	u32 reserved;
> -	u64 srq_handle;
> -};
> -
> -struct nd_cq_modify {
> -	u32 version;
> -	u32 queue_depth;
> -	u32 ce_mapping_count;
> -	u32 cb_mappings_offset;
> -	u64 cq_handle;
> -};
> -
> -struct nd_cq_notify {
> -	u32 version;
> -	u32 type;
> -	u64 cq_handle;
> -};
> -
> -struct nd_mr_register_hdr {
> -	u32 version;
> -	u32 flags;
> -	u64 cb_length;
> -	u64 target_addr;
> -	u64 mr_handle;
> -};
> -
> -struct nd_mr_register {
> -	struct nd_mr_register_hdr header;
> -	u64 address;
> -};
> -
> -struct nd_bind {
> -	u32 version;
> -	u32 reserved;
> -	u64 handle;
> -	union nd_sockaddr_inet address;
> -};
> -
> -struct nd_read_limits {
> -	u32 inbound;
> -	u32 outbound;
> -};
> -
> -struct nd_connect {
> -	u32 version;
> -	u32 reserved;
> -	struct nd_read_limits read_limits;
> -	u32 cb_private_data_length;
> -	u32 cb_private_data_offset;
> -	u64 connector_handle;
> -	u64 qp_handle;
> -	union nd_sockaddr_inet destination_address;
> -	struct if_physical_addr phys_addr;
> -};
> -
> -struct nd_accept {
> -	u32 version;
> -	u32 reserved;
> -	struct nd_read_limits read_limits;
> -	u32 cb_private_data_length;
> -	u32 cb_private_data_offset;
> -	u64 connector_handle;
> -	u64 qp_handle;
> -};
> -
> -struct nd_reject {
> -	u32 version;
> -	u32 reserved;
> -	u32 cb_private_data_length;
> -	u32 cb_private_data_offset;
> -	u64 connector_handle;
> -};
> -
> -struct nd_listen {
> -	u32 version;
> -	u32 back_log;
> -	u64 listener_handle;
> -};
> -
> -struct nd_get_connection_request {
> -	u32 version;
> -	u32 reserved;
> -	u64 listener_handle;
> -	u64 connector_handle;
> -};
> -
> -enum ndv_mmio_type {
> -	ND_PARTITION_KERNEL_VIRTUAL,
> -	ND_PARTITION_SYSTEM_PHYSICAL,
> -	ND_PARTITION_GUEST_PHYSICAL,
> -	ND_MAXIMUM_MMIO_TYPE
> -};
> -
> -struct ndv_resolve_adapter_id {
> -	u32 version;
> -	struct if_physical_addr phys_addr;
> -};
> -
> -struct ndv_partition_create {
> -	u32 version;
> -	enum ndv_mmio_type mmio_type;
> -	u64 adapter_id;
> -	u64 xmit_cap;
> -};
> -
> -struct ndv_partition_bind_luid {
> -	u32 version;
> -	u32 reserved;
> -	u64 partition_handle;
> -	struct if_physical_addr phys_addr;
> -	//IF_LUID luid; //KYS?
> -};
> -
> -struct ndv_partition_bind_address {
> -	u32 version;
> -	u32 reserved;
> -	u64 partition_handle;
> -	union nd_sockaddr_inet address;
> -	struct if_physical_addr guest_phys_addr;
> -	struct if_physical_addr phys_addr;
> -};
> -
> -struct ndk_mr_register {
> -	struct nd_mr_register_hdr hdr;
> -	u32 cb_logical_page_addresses_offset;
> -};
> -
> -struct ndk_bind {
> -	struct nd_bind hdr;
> -	u64 authentication_id;
> -	bool is_admin;
> -};
> -
> -#define FDN 0x12
> -#define METHOD_BUFFERED 0x0
> -#define FAA 0x0
> -
> -#define CTL_CODE( DeviceType, Function, Method, Access ) ( \
> -	((DeviceType) << 16) | ((Access) << 14) | ((Function) << 2) | (Method) \
> -)
> -
> -#define ND_FUNCTION(r_, i_)    ((r_) << 6 | (i_))
> -#define IOCTL_ND(r_, i_) \
> -		 CTL_CODE( FDN, ND_FUNCTION((r_), (i_)), METHOD_BUFFERED, FAA )
> -
> -#define ND_FUNCTION_FROM_CTL_CODE(ctrlCode_)     ((ctrlCode_ >> 2) & 0xFFF)
> -#define ND_RESOURCE_FROM_CTL_CODE(ctrlCode_)     (ND_FUNCTION_FROM_CTL_CODE(ctrlCode_) >> 6)
> -#define ND_OPERATION_FROM_CTRL_CODE(ctrlCode_)   (ND_FUNCTION_FROM_CTL_CODE(ctrlCode_) & 0x3F)
> -
> -#define ND_DOS_DEVICE_NAME L"\\DosDevices\\Global\\NetworkDirect"
> -#define ND_WIN32_DEVICE_NAME L"\\\\.\\NetworkDirect"
> -
> -enum nd_resource_type {
> -	ND_PROVIDER = 0,
> -	ND_ADAPTER,
> -	ND_PD,
> -	ND_CQ,
> -	ND_MR,
> -	ND_MW,
> -	ND_SRQ,
> -	ND_CONNECTOR,
> -	ND_LISTENER,
> -	ND_QP,
> -	ND_VIRTUAL_PARTITION,
> -	ND_RESOURCE_TYPE_COUNT
> -};
> -
> -#define ND_OPERATION_COUNT 14
> -
> -#define IOCTL_ND_PROVIDER(i_)		IOCTL_ND(ND_PROVIDER, i_)
> -#define IOCTL_ND_ADAPTER(i_)		IOCTL_ND(ND_ADAPTER, i_)
> -#define IOCTL_ND_PD(i_)			IOCTL_ND(ND_PD, i_)
> -#define IOCTL_ND_CQ(i_)			IOCTL_ND(ND_CQ, i_)
> -#define IOCTL_ND_MR(i_)			IOCTL_ND(ND_MR, i_)
> -#define IOCTL_ND_MW(i_)			IOCTL_ND(ND_MW, i_)
> -#define IOCTL_ND_SRQ(i_)		IOCTL_ND(ND_SRQ, i_)
> -#define IOCTL_ND_CONNECTOR(i_)		IOCTL_ND(ND_CONNECTOR, i_)
> -#define IOCTL_ND_LISTENER(i_)		IOCTL_ND(ND_LISTENER, i_)
> -#define IOCTL_ND_QP(i_)			IOCTL_ND(ND_QP, i_)
> -#define IOCTL_ND_VIRTUAL_PARTITION(i_)	IOCTL_ND(ND_VIRTUAL_PARTITION, i_)
> -
> -/* Provider IOCTLs */
> -#define IOCTL_ND_PROVIDER_INIT				IOCTL_ND_PROVIDER( 0 )
> -#define IOCTL_ND_PROVIDER_BIND_FILE			IOCTL_ND_PROVIDER( 1 )
> -#define IOCTL_ND_PROVIDER_QUERY_ADDRESS_LIST		IOCTL_ND_PROVIDER( 2 )
> -#define IOCTL_ND_PROVIDER_RESOLVE_ADDRESS		IOCTL_ND_PROVIDER( 3 )
> -#define IOCTL_ND_PROVIDER_MAX_OPERATION			4
> -
> -/* Adapter IOCTLs */
> -#define IOCTL_ND_ADAPTER_OPEN				IOCTL_ND_ADAPTER( 0 )
> -#define IOCTL_ND_ADAPTER_CLOSE				IOCTL_ND_ADAPTER( 1 )
> -#define IOCTL_ND_ADAPTER_QUERY				IOCTL_ND_ADAPTER( 2 )
> -#define IOCTL_ND_ADAPTER_QUERY_ADDRESS_LIST		IOCTL_ND_ADAPTER( 3 )
> -#define IOCTL_ND_ADAPTER_MAX_OPERATION			4
> -
> -/* Protection Domain IOCTLs */
> -#define IOCTL_ND_PD_CREATE				IOCTL_ND_PD( 0 )
> -#define IOCTL_ND_PD_FREE				IOCTL_ND_PD( 1 )
> -#define IOCTL_ND_PD_MAX_OPERATION			2
> -
> -/* Completion Queue IOCTLs */
> -#define IOCTL_ND_CQ_CREATE				IOCTL_ND_CQ( 0 )
> -#define IOCTL_ND_CQ_FREE				IOCTL_ND_CQ( 1 )
> -#define IOCTL_ND_CQ_CANCEL_IO				IOCTL_ND_CQ( 2 )
> -#define IOCTL_ND_CQ_GET_AFFINITY			IOCTL_ND_CQ( 3 )
> -#define IOCTL_ND_CQ_MODIFY				IOCTL_ND_CQ( 4 )
> -#define IOCTL_ND_CQ_NOTIFY				IOCTL_ND_CQ( 5 )
> -#define IOCTL_ND_CQ_MAX_OPERATION			6
> -
> -/* Memory Region IOCTLs */
> -#define IOCTL_ND_MR_CREATE				IOCTL_ND_MR( 0 )
> -#define IOCTL_ND_MR_FREE				IOCTL_ND_MR( 1 )
> -#define IOCTL_ND_MR_CANCEL_IO				IOCTL_ND_MR( 2 )
> -#define IOCTL_ND_MR_REGISTER				IOCTL_ND_MR( 3 )
> -#define IOCTL_ND_MR_DEREGISTER				IOCTL_ND_MR( 4 )
> -#define IOCTL_NDK_MR_REGISTER				IOCTL_ND_MR( 5 )
> -#define IOCTL_ND_MR_MAX_OPERATION			6
> -
> -/* Memory Window IOCTLs */
> -#define IOCTL_ND_MW_CREATE				IOCTL_ND_MW( 0 )
> -#define IOCTL_ND_MW_FREE				IOCTL_ND_MW( 1 )
> -#define IOCTL_ND_MW_MAX_OPERATION			2
> -
> -/* Shared Receive Queue IOCTLs */
> -#define IOCTL_ND_SRQ_CREATE				IOCTL_ND_SRQ( 0 )
> -#define IOCTL_ND_SRQ_FREE				IOCTL_ND_SRQ( 1 )
> -#define IOCTL_ND_SRQ_CANCEL_IO				IOCTL_ND_SRQ( 2 )
> -#define IOCTL_ND_SRQ_GET_AFFINITY			IOCTL_ND_SRQ( 3 )
> -#define IOCTL_ND_SRQ_MODIFY				IOCTL_ND_SRQ( 4 )
> -#define IOCTL_ND_SRQ_NOTIFY				IOCTL_ND_SRQ( 5 )
> -#define IOCTL_ND_SRQ_MAX_OPERATION			6
> -
> -/* Connector IOCTLs */
> -#define IOCTL_ND_CONNECTOR_CREATE			IOCTL_ND_CONNECTOR( 0 )
> -#define IOCTL_ND_CONNECTOR_FREE				IOCTL_ND_CONNECTOR( 1 )
> -#define IOCTL_ND_CONNECTOR_CANCEL_IO			IOCTL_ND_CONNECTOR( 2 )
> -#define IOCTL_ND_CONNECTOR_BIND				IOCTL_ND_CONNECTOR( 3 )
> -#define IOCTL_ND_CONNECTOR_CONNECT			IOCTL_ND_CONNECTOR( 4 )
> -#define IOCTL_ND_CONNECTOR_COMPLETE_CONNECT		IOCTL_ND_CONNECTOR( 5 )
> -#define IOCTL_ND_CONNECTOR_ACCEPT			IOCTL_ND_CONNECTOR( 6 )
> -#define IOCTL_ND_CONNECTOR_REJECT			IOCTL_ND_CONNECTOR( 7 )
> -#define IOCTL_ND_CONNECTOR_GET_READ_LIMITS		IOCTL_ND_CONNECTOR( 8 )
> -#define IOCTL_ND_CONNECTOR_GET_PRIVATE_DATA		IOCTL_ND_CONNECTOR( 9 )
> -#define IOCTL_ND_CONNECTOR_GET_PEER_ADDRESS		IOCTL_ND_CONNECTOR( 10 )
> -#define IOCTL_ND_CONNECTOR_GET_ADDRESS			IOCTL_ND_CONNECTOR( 11 )
> -#define IOCTL_ND_CONNECTOR_NOTIFY_DISCONNECT		IOCTL_ND_CONNECTOR( 12 )
> -#define IOCTL_ND_CONNECTOR_DISCONNECT			IOCTL_ND_CONNECTOR( 13 )
> -#define IOCTL_ND_CONNECTOR_MAX_OPERATION		14
> -
> -/* Listener IOCTLs */
> -#define IOCTL_ND_LISTENER_CREATE			IOCTL_ND_LISTENER( 0 )
> -#define IOCTL_ND_LISTENER_FREE				IOCTL_ND_LISTENER( 1 )
> -#define IOCTL_ND_LISTENER_CANCEL_IO			IOCTL_ND_LISTENER( 2 )
> -#define IOCTL_ND_LISTENER_BIND				IOCTL_ND_LISTENER( 3 )
> -#define IOCTL_ND_LISTENER_LISTEN			IOCTL_ND_LISTENER( 4 )
> -#define IOCTL_ND_LISTENER_GET_ADDRESS			IOCTL_ND_LISTENER( 5 )
> -#define IOCTL_ND_LISTENER_GET_CONNECTION_REQUEST	IOCTL_ND_LISTENER( 6 )
> -#define IOCTL_ND_LISTENER_MAX_OPERATION			7
> -
> -/* Queue Pair IOCTLs */
> -#define IOCTL_ND_QP_CREATE				IOCTL_ND_QP( 0 )
> -#define IOCTL_ND_QP_CREATE_WITH_SRQ			IOCTL_ND_QP( 1 )
> -#define IOCTL_ND_QP_FREE				IOCTL_ND_QP( 2 )
> -#define IOCTL_ND_QP_FLUSH				IOCTL_ND_QP( 3 )
> -#define IOCTL_ND_QP_MAX_OPERATION			4
> -
> -/* Kernel-mode only IOCTLs (IRP_MJ_INTERNAL_DEVICE_CONTROL) */
> -#define IOCTL_NDV_PARTITION_RESOLVE_ADAPTER_ID	IOCTL_ND_VIRTUAL_PARTITION( 0 )
> -#define IOCTL_NDV_PARTITION_CREATE		IOCTL_ND_VIRTUAL_PARTITION( 1 )
> -#define IOCTL_NDV_PARTITION_FREE		IOCTL_ND_VIRTUAL_PARTITION( 2 )
> -#define IOCTL_NDV_PARTITION_BIND		IOCTL_ND_VIRTUAL_PARTITION( 3 )
> -#define IOCTL_NDV_PARTITION_UNBIND		IOCTL_ND_VIRTUAL_PARTITION( 4 )
> -#define IOCTL_NDV_PARTITION_BIND_LUID		IOCTL_ND_VIRTUAL_PARTITION( 5 )
> -#define IOCTL_NDV_PARTITION_MAX_OPERATION	6
> -
> -
> -#define MB_SHIFT 20
> -
> -
> -/* Ringbuffer size for the channel */
> -#define NDV_NUM_PAGES_IN_RING_BUFFER 64
> -
> -#define NDV_MAX_PACKETS_PER_RECEIVE 8
> -
> -#define NDV_MAX_PACKET_COUNT    16304
> -
> -#define NDV_MAX_NUM_OUTSTANDING_RECEIVED_PACKETS (16304)
> -#define NDV_MAX_HANDLE_TABLE_SIZE (16304)
> -#define NDV_HOST_MAX_HANDLE_TABLE_SIZE (NDV_MAX_HANDLE_TABLE_SIZE * 16)
> -
> -
> -#define NDV_MAX_MAPPINGS 4
> -
> -#define NDV_STATE_NONE			0x00000000
> -#define NDV_STATE_CREATED		0x00000001
> -#define NDV_STATE_CONNECTING		0x00000002
> -#define NDV_STATE_INITIALIZING		0x00000003
> -#define NDV_STATE_OPERATIONAL		0xEFFFFFFF
> -#define NDV_STATE_FAILED		0xFFFFFFFF
> -
> -
> -#define NDV_MAX_PRIVATE_DATA_SIZE 64
> -#define NDV_MAX_IOCTL_SIZE        256
> -
> -/* max size of buffer for vector of ND_MAPPING */
> -#define NDV_MAX_MAPPING_BUFFER_SIZE \
> -	(NDV_MAX_MAPPINGS * sizeof(union nd_mapping))
> -
> -/* max expected ioctl buffer size from users */
> -#define NDV_MAX_IOCTL_BUFFER_SIZE \
> -	(NDV_MAX_IOCTL_SIZE + \
> -	NDV_MAX_MAPPING_BUFFER_SIZE + \
> -	NDV_MAX_PRIVATE_DATA_SIZE)
> -
> -/*  max PFN array for inline buffers */
> -#define NDV_MAX_INLINE_PFN_ARRAY_LENGTH 32
> -
> -/* Field header size for inline buffer */
> -#define NDV_MAX_MAPPING_PACKET_FILED_BUFFER_SIZE \
> -	(NDV_MAX_MAPPINGS * sizeof(NDV_PACKET_FIELD))
> -
> -/* Max for a single field */
> -
> -#define NDV_MAX_SINGLE_MAPPING_FIELD  ( sizeof(GPA_RANGE) + \
> -	(sizeof(PFN_NUMBER) * NDV_MAX_INLINE_PFN_ARRAY_LENGTH))
> -
> -/* Max for all inine data */
> -
> -#define NDV_MAX_MAPPING_DATA_SIZE (NDV_MAX_MAPPING_PACKET_FILED_BUFFER_SIZE + \
> -	(NDV_MAX_MAPPINGS * NDV_MAX_SINGLE_MAPPING_FIELD))
> -
> -
> -#define NDV_MAX_PACKET_HEADER_SIZE 256
> -
> -#define NDV_MAX_PACKET_SIZE    (NDV_MAX_PACKET_HEADER_SIZE + \
> -				NDV_MAX_IOCTL_BUFFER_SIZE + \
> -				NDV_MAX_MAPPING_DATA_SIZE)
> -
> -/* Well known message type INIT is defined for the channel
> - * not for the protocol.
> - */
> -
> -#define NDV_PACKET_TYPE_INIT  0xFFFFFFFF
> -
> -/* Invalid protocol version to to identify uninitialized channels */
> -
> -#define NDV_PROTOCOL_VERSION_INVALID  0xFFFFFFFF
> -
> -/* Flags that control the bahavior of packet handling */
> -
> -enum ndv_packet_options {
> -	NDV_PACKET_OPTION_NONE = 0x00,
> -
> -	/* Indicates that the ExternalDataMdl parameter is expectected to be
> -	 * passed and must be handled in the reciever.  This call must be
> -	 * handled specially to ensure that the MDL can be created correctly.
> -	 */
> -	NDV_PACKET_OPTION_EXTERNAL_DATA = 0x01,
> -
> -	/* Inicates that the reciever must execution the handler at passive. */
> -	NDV_PACKET_OPTIONS_REQUIRES_PASSIVE = 0x02,
> -
> -	/* Indicates that the sender does not expect and is not waiting for a
> -	 * response packet.
> -	 */
> -	NDV_PACKET_OPTIONS_POST = 0x04,
> -};
> -
> -#define NDV_PACKET_TYPE(id_, opt_) \
> -	(((opt_)<<24) | (id_))
> -
> -#define NDV_PACKET_TYPE_OPTIONS(type_) \
> -	(((type_) >> 24) & 0xFF)
> -
> -#define NDV_PACKET_TYPE_ID(type_) \
> -	((type_) & 0xFFFFFF) \
> -
> -#define NDV_ADD_PACKET_OPTION(type_, opt_) \
> -	(type_) |= (opt_<<24)
> -
> -/* The header value sent on all packets */
> -union ndv_packet_hdr {
> -
> -	struct {
> -		/* The type of packet.
> -		 * This value should be created with the NDV_PACKET_TYPE macro
> -		 * to include all packet options within the packet type.
> -		 */
> -		u32 packet_type;
> -		/* The size of the entire fixed message structure that exists
> -		 * before the data. This must be >= sizeof(NDV_PACKET_HEADER)
> -		 */
> -		u32 hdr_sz;
> -		/* This size of the data that follows the message
> -		 * data_sz + hdr_sz size gives the total size of
> -		 * the buffer that is used.
> -		 */
> -		u32 data_sz;
> -		/* The status code used to indicate success or failure.
> -		 * It is only used in completions and during responses.
> -		 */
> -		u32 status; //KYS: NTSTATUS?
> -	};
> -
> -	u64 padding[2]; //KYS: why?
> -};
> -
> -
> -/* The core INIT packet.  This message is defined in the channel
> - * not in the protocol.  This message should never change size
> - * or behavior, as it could impact compatibility in the future.
> - * This packet is used to negotiate the protocol version, so chaning
> - * this size could break backward compat.
> - */
> -
> -union ndv_packet_init {
> -	struct {
> -		u32 packet_type;
> -		u32 protocol_version;
> -		u32 flags;
> -	};
> -	u64 padding[2];
> -}  __packed;
> -
> -#define NDV_PACKET_INIT_SIZE 16
> -
> -/* Data packing flags used for accessing the dynamic fields inside a packet */
> -#define NDV_DATA_PACKING_2 0x1
> -#define NDV_DATA_PACKING_4 0x3
> -#define NDV_DATA_PACKING_8 0x7
> -
> -
> -#define NDV_PROTOCOL_VERSION_1        0x0100
> -#define NDV_PROTOCOL_VERSION_CURRENT  NDV_PROTOCOL_VERSION_1
> -#define NDV_PROTOCOL_VERSION_COUNT    1
> -
> -struct ndv_pkt_field {
> -	u32 size;
> -	u32 offset;
> -};
> -
> -enum ndv_pkt_id {
> -	NDV_PKT_UNKNOWN = 0,
> -	/* Version 1 Message ID's */
> -	NDV_PKT_ID1_BIND,
> -	NDV_PKT_ID1_CREATE,
> -	NDV_PKT_ID1_CLEANUP,
> -	NDV_PKT_ID1_CANCEL,
> -	NDV_PKT_ID1_CONTROL,
> -	NDV_PKT_ID1_COMPLETE,
> -	NDV_PKT_ID1_INIT_RESOURCES,
> -};
> -
> -/* The guest will send this as the first messages just after init
> - * The resources are reserved per channel.
> - */
> -
> -struct ndv_pkt_hdr_init_resources_1 {
> -
> -	union ndv_packet_hdr    pkt_hdr;
> -	u16 io_space_sz_mb;
> -	u64 io_space_start;
> -
> -};
> -
> -
> -
> -/* The guest will send this packet to the host after channel init
> - * to query support for the adapters that are registered.
> - */
> -
> -struct ndv_pkt_hdr_bind_1 {
> -	union ndv_packet_hdr    pkt_hdr;
> -	bool unbind;
> -	union nd_sockaddr_inet ip_address;
> -	struct if_physical_addr phys_addr;
> -	u64 guest_id;
> -};
> -
> -union ndv_context_handle {
> -	u64 val64;
> -	struct {
> -		u32 local;
> -		u32 remote;
> -	};
> -};
> -
> -struct ndv_pkt_hdr_create_1 {
> -	union ndv_packet_hdr    pkt_hdr;
> -
> -	/* Identifies the object used to track this file handle on both
> -	 * the guest and the host.  When sent from the guest, it will contain
> -	 * the guest handle.  On success, the host will populate and return
> -	 * it's handle value as well.
> -	 */
> -
> -	union ndv_context_handle handle;
> -
> -	/* The parameters sent to the CreateFile call */
> -	u32  access_mask;
> -	u32 open_options;
> -
> -	u16 file_attributes; //KYS: This field must be 64 bit aligned
> -
> -	u16 share_access; //KYS
> -
> -	u32 kys_padding; //KYS
> -
> -	u16  ea_length; //KYS; needs to be 64 bit aligned; what is ea length - unused
> -};
> -
> -
> -struct ndv_pkt_hdr_cleanup_1 {
> -	union ndv_packet_hdr    pkt_hdr;
> -
> -	/* Identifies the object used to track this file handle on both
> -	 * the guest and the host.  When sent from the guest, it will contain
> -	 * the both the guest and host handle values.  The host will use this
> -	 * value to cleanup its resource, then update its portion of the handle
> -	 * to NDV_HANDLE_NULL before returning the data back to the guest.
> -	 */
> -	union ndv_context_handle handle;
> -};
> -
> -struct ndv_pkt_hdr_cancel_1 {
> -	union ndv_packet_hdr    pkt_hdr;
> -	union ndv_context_handle file_handle;
> -	union ndv_context_handle irp_handle;
> -};
> -
> -struct ndv_bind_port_info {
> -	//LUID authentication_id; //KYS: LUID?
> -	bool is_admin;
> -};
> -
> -struct ndv_extended_data_flds {
> -	union {
> -		u32 field_count;
> -		u64 padding;
> -	};
> -
> -	//struct ndv_pkt_field fields[ANYSIZE_ARRAY]; //KYS?
> -};
> -
> -
> -struct ndv_packet_hdr_control_1 {
> -	union ndv_packet_hdr    pkt_hdr;
> -	/* Identifies the object used to track this file handle on both
> -	 * the guest and the host.  This should always have both guest
> -	 * and host handle values inside it.
> -	 */
> -
> -	union ndv_context_handle file_handle;
> -
> -	/* The handle information for the allocated irp context object.
> -	 * This information is used when the host/guest starts the cancelation
> -	 */
> -	union ndv_context_handle irp_handle;
> -
> -	/* The input data describing in the IO control parameters */
> -
> -	u32 io_cntrl_code;
> -	u32 output_buf_sz;
> -	u32 input_buf_sz;
> -	u32 input_output_buf_offset;
> -
> -	/* These are used in the return message to indicate the status of the IO
> -	 * operation and the amount of data written to the output buffer.
> -	 */
> -	u32 io_status; //KYS: NTSTATUS?
> -	u32 bytes_returned;
> -
> -	/* This contains the field information for additional data that is sent
> -	 * with the packet that is IOCTL specific.
> -	 */
> -
> -	struct ndv_pkt_field extended_data;
> -};
> -
> -/*
> - * Include MLX specific defines.
> - */
> -
> -#include "mx_abi.h"
> -
> -/* Driver specific state.
> - */
> -
> -/*
> - * We need to have host open a file; some
> - * Windows constants for open.
> - */
> -#define STANDARD_RIGHTS_ALL   (0x001F0000L)
> -#define FILE_ATTRIBUTE_NORMAL (0x80)
> -#define FILE_SHARE_READ	 (0x00000001)
> -#define FILE_SHARE_WRITE (0x00000002)
> -#define FILE_SHARE_DELETE (0x00000004)
> -#define FILE_FLAG_OVERLAPPED (0x40000000)
> -#define FILE_SHARE_ALL (FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE)
> -#define CREATE_ALWAYS (2)
> -#define OPEN_EXISTING (3)
> -
> -#define RTL_NUMBER_OF(_x) \
> -		sizeof(_x)/sizeof(_x[0])
> -/*
> - * The context structure tracks the open state.
> - */
> -
> -/*
> - * Packet layout for open adaptor.
> - */
> -
> -/*
> - * Packet for querying the address list.
> - */
> -
> -union query_addr_list_ioctl {
> -	struct nd_handle in;
> -	union nd_sockaddr_inet out[16]; //KYS a max of 16 addresses
> -};
> -
> -struct pkt_query_addr_list {
> -	struct ndv_packet_hdr_control_1 hdr;
> -	union query_addr_list_ioctl ioctl;
> -	unsigned long activity_id;
> -};
> -
> -
> -struct pkt_fld {
> -	u32 size;
> -	u32 offset;
> -};
> -
> -struct fld_data {
> -	union {
> -		u64 padding;
> -	};
> -};
> -
> -struct extended_data_oad {
> -	union {
> -		u32 cnt;
> -		u64 padding;
> -	};
> -	/* offsets are from start of extended data struct
> -	 * and should start on 8 byte boundary
> -	 */
> -	struct pkt_fld fields[IBV_GET_CONTEXT_MAPPING_MAX];
> -};
> -
> -union oad_ioctl {
> -	struct nd_open_adapter input;
> -	struct nd_resource_descriptor resrc_desc;
> -};
> -
> -union oad_mappings {
> -	struct ibv_get_context_req ctx_input;
> -	struct ibv_get_context_resp ctx_output;
> -};
> -
> -struct pkt_nd_open_adapter {
> -	struct ndv_packet_hdr_control_1 hdr;
> -
> -	union oad_ioctl ioctl;
> -	union oad_mappings mappings;
> -
> -	/*
> -	 * Extended data.
> -	 */
> -	struct extended_data_oad ext_data;
> -};
> -
> -/*
> - * Create CQ IOCTL.
> - */
> -
> -struct cq_db_gpa {
> -	u32 byte_count;
> -	u32 byte_offset;
> -	u64 pfn_array[2];
> -};
> -
> -struct cq_sn_gpa {
> -	u32 byte_count;
> -	u32 byte_offset;
> -	u64 pfn_array[2];
> -};
> -
> -struct create_cq_ext_data {
> -	union {
> -		u32 cnt;
> -		u64 padding;
> -	};
> -	/* offsets are from start of extended data struct
> -	 * and should start on 8 byte boundary
> -	 */
> -	struct pkt_fld fields[MLX4_IB_CREATE_CQ_MAPPING_MAX];
> -	struct cq_db_gpa db_gpa;
> -	struct cq_sn_gpa sn_gpa;
> -	struct gpa_range cqbuf_gpa;
> -};
> -
> -union create_cq_ioctl {
> -	struct nd_create_cq input;
> -	struct nd_resource_descriptor resrc_desc;
> -};
> -
> -union create_cq_mappings {
> -	struct ibv_create_cq cq_in;
> -	struct ibv_create_cq_resp cq_resp;
> -};
> -
> -struct pkt_nd_create_cq {