| Message ID | c6751a0126ef4d3d1ce75e596ccf9cebd9757052.1285385607.git.xiaohui.xin@intel.com |
|---|---|
| State | RFC, archived |
| Delegated to: | David Miller |
| Headers | show |
On Sat, 2010-09-25 at 12:27 +0800, xiaohui.xin@intel.com wrote: > From: Xin Xiaohui <xiaohui.xin@intel.com> > > Signed-off-by: Xin Xiaohui <xiaohui.xin@intel.com> > Signed-off-by: Zhao Yu <yzhao81new@gmail.com> > Reviewed-by: Jeff Dike <jdike@linux.intel.com> > --- > include/linux/netdevice.h | 22 +++++++++++++++++++++- > 1 files changed, 21 insertions(+), 1 deletions(-) > > diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h > index fa8b476..ba582e1 100644 > --- a/include/linux/netdevice.h > +++ b/include/linux/netdevice.h > @@ -530,6 +530,25 @@ struct netdev_queue { > unsigned long tx_dropped; > } ____cacheline_aligned_in_smp; > > +/* Add a structure in structure net_device, the new field is > + * named as mp_port. It's for mediate passthru (zero-copy). That belongs in the commit message. > + * It contains the capability for the net device driver, > + * a socket, and an external buffer creator, external means > + * skb buffer belongs to the device may not be allocated from > + * kernel space. Who sets which fields in this structure? Can you make this a kernel-doc comment specifying the use of each field? Ben. > + */ > +struct mpassthru_port { > + int hdr_len; > + int data_len; > + int npages; > + unsigned flags; > + struct socket *sock; > + int vnet_hlen; > + struct skb_ext_page *(*ctor)(struct mpassthru_port *, > + struct sk_buff *, int); > + struct skb_ext_page *(*hash)(struct net_device *, > + struct page *); > +}; > > /* > * This structure defines the management hooks for network devices. > @@ -952,7 +971,8 @@ struct net_device { > struct macvlan_port *macvlan_port; > /* GARP */ > struct garp_port *garp_port; > - > + /* mpassthru */ > + struct mpassthru_port *mp_port; > /* class/net/name entry */ > struct device dev; > /* space for optional device, statistics, and wireless sysfs groups */
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index fa8b476..ba582e1 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -530,6 +530,25 @@ struct netdev_queue { unsigned long tx_dropped; } ____cacheline_aligned_in_smp; +/* Add a structure in structure net_device, the new field is + * named as mp_port. It's for mediate passthru (zero-copy). + * It contains the capability for the net device driver, + * a socket, and an external buffer creator, external means + * skb buffer belongs to the device may not be allocated from + * kernel space. + */ +struct mpassthru_port { + int hdr_len; + int data_len; + int npages; + unsigned flags; + struct socket *sock; + int vnet_hlen; + struct skb_ext_page *(*ctor)(struct mpassthru_port *, + struct sk_buff *, int); + struct skb_ext_page *(*hash)(struct net_device *, + struct page *); +}; /* * This structure defines the management hooks for network devices. @@ -952,7 +971,8 @@ struct net_device { struct macvlan_port *macvlan_port; /* GARP */ struct garp_port *garp_port; - + /* mpassthru */ + struct mpassthru_port *mp_port; /* class/net/name entry */ struct device dev; /* space for optional device, statistics, and wireless sysfs groups */