diff options
| author | Yi Zou <yi.zou@intel.com> | 2009-02-27 23:07:10 +0100 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@HansenPartnership.com> | 2009-03-13 21:14:33 +0100 |
| commit | 276d68142b7b676594ab8739355c27e9e5b3d41d (patch) | |
| tree | 6c341ba366c900f2bef253d13b117da1c278ee3f /drivers/scsi/libfc/fc_fcp.c | |
| parent | [SCSI] fcoe, libfc: check offload features from LLD through netdev (diff) | |
| download | linux-276d68142b7b676594ab8739355c27e9e5b3d41d.tar.xz linux-276d68142b7b676594ab8739355c27e9e5b3d41d.zip | |
[SCSI] libfc: use lso_max for sequence offload
Make sure for large send is supported by LLD in outgoing FCP data, we are only
sending the lso_max a time in one single large send, since that is what
supported by LLD.
Signed-off-by: Yi Zou <yi.zou@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Diffstat (limited to 'drivers/scsi/libfc/fc_fcp.c')
| -rw-r--r-- | drivers/scsi/libfc/fc_fcp.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/scsi/libfc/fc_fcp.c b/drivers/scsi/libfc/fc_fcp.c index a070e5712439..48adb89d911a 100644 --- a/drivers/scsi/libfc/fc_fcp.c +++ b/drivers/scsi/libfc/fc_fcp.c @@ -435,7 +435,13 @@ static int fc_fcp_send_data(struct fc_fcp_pkt *fsp, struct fc_seq *seq, * burst length (t_blen) to seq_blen, otherwise set t_blen * to max FC frame payload previously set in fsp->max_payload. */ - t_blen = lp->seq_offload ? seq_blen : fsp->max_payload; + t_blen = fsp->max_payload; + if (lp->seq_offload) { + t_blen = min(seq_blen, (size_t)lp->lso_max); + FC_DEBUG_FCP("fsp=%p:lso:blen=%zx lso_max=0x%x t_blen=%zx\n", + fsp, seq_blen, lp->lso_max, t_blen); + } + WARN_ON(t_blen < FC_MIN_MAX_PAYLOAD); if (t_blen > 512) t_blen &= ~(512 - 1); /* round down to block size */ |