[03/21] cifs: add resp_buf_size to the mid_q_entry structure

and get rid of some more calls to get_rfc1002_length()

Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
---
 fs/cifs/cifsglob.h      | 1 +
 fs/cifs/connect.c       | 1 +
 fs/cifs/smb2transport.c | 2 +-
 fs/cifs/transport.c     | 2 +-
 4 files changed, 4 insertions(+), 2 deletions(-)

2018-04-09 1:06 GMT-07:00 Ronnie Sahlberg <lsahlber@redhat.com>:
> and get rid of some more calls to get_rfc1002_length()
>
> Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
> ---
>  fs/cifs/cifsglob.h      | 1 +
>  fs/cifs/connect.c       | 1 +
>  fs/cifs/smb2transport.c | 2 +-
>  fs/cifs/transport.c     | 2 +-
>  4 files changed, 4 insertions(+), 2 deletions(-)
>
> diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
> index 92ba96fae09e..0bdcadda762d 100644
> --- a/fs/cifs/cifsglob.h
> +++ b/fs/cifs/cifsglob.h
> @@ -1375,6 +1375,7 @@ struct mid_q_entry {
>         mid_handle_t *handle; /* call handle mid callback */
>         void *callback_data;      /* general purpose pointer for callback */
>         void *resp_buf;         /* pointer to received SMB header */
> +       unsigned int resp_buf_size;
>         int mid_state;  /* wish this were enum but can not pass to wait_event */
>         unsigned int mid_flags;
>         __le16 command;         /* smb command code */
> diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
> index 48012a0addf1..e8830f076a7f 100644
> --- a/fs/cifs/connect.c
> +++ b/fs/cifs/connect.c
> @@ -928,6 +928,7 @@ cifs_demultiplex_thread(void *p)
>
>                 server->lstrp = jiffies;
>                 if (mid_entry != NULL) {
> +                       mid_entry->resp_buf_size = server->pdu_size;
>                         if ((mid_entry->mid_flags & MID_WAIT_CANCELLED) &&
>                              mid_entry->mid_state == MID_RESPONSE_RECEIVED &&
>                                         server->ops->handle_cancelled_mid)
> diff --git a/fs/cifs/smb2transport.c b/fs/cifs/smb2transport.c
> index bf49cb73b9e6..8806f3f76c1d 100644
> --- a/fs/cifs/smb2transport.c
> +++ b/fs/cifs/smb2transport.c
> @@ -604,7 +604,7 @@ int
>  smb2_check_receive(struct mid_q_entry *mid, struct TCP_Server_Info *server,
>                    bool log_error)
>  {
> -       unsigned int len = get_rfc1002_length(mid->resp_buf);
> +       unsigned int len = mid->resp_buf_size;
>         struct kvec iov[2];
>         struct smb_rqst rqst = { .rq_iov = iov,
>                                  .rq_nvec = 2 };
> diff --git a/fs/cifs/transport.c b/fs/cifs/transport.c
> index 279718dcb2ed..8f6f25918229 100644
> --- a/fs/cifs/transport.c
> +++ b/fs/cifs/transport.c
> @@ -790,7 +790,7 @@ cifs_send_recv(const unsigned int xid, struct cifs_ses *ses,
>
>         buf = (char *)midQ->resp_buf;
>         resp_iov->iov_base = buf;
> -       resp_iov->iov_len = get_rfc1002_length(buf) +
> +       resp_iov->iov_len = midQ->resp_buf_size +
>                 ses->server->vals->header_preamble_size;
>         if (midQ->large_buf)
>                 *resp_buf_type = CIFS_LARGE_BUFFER;
> --
> 2.13.3
>
> --
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Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>

--
Best regards,
Pavel Shilovsky
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