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| author | Yi Zou <yi.zou@intel.com> | 2012-07-06 10:40:31 -0700 |
|---|---|---|
| committer | James Bottomley <JBottomley@Parallels.com> | 2012-07-20 08:58:56 +0100 |
| commit | a752359f2b0a291c5f229e883842e4b30c698387 (patch) | |
| tree | 6ead324702ca37a69af584be38f31e6d5ecb9f83 /drivers/scsi/libfc | |
| parent | ac166d2fbd2d0c295454bcee7b3c930cb96e72cc (diff) | |
| download | blackbird-op-linux-a752359f2b0a291c5f229e883842e4b30c698387.tar.gz blackbird-op-linux-a752359f2b0a291c5f229e883842e4b30c698387.zip | |
[SCSI] libfc: fix sending REC after FCP_RESP is received
This is exposed in the case the FCP_DATA frames somehow got lost and fc_fcp got
the FCP_RSP, in fc_fcp_recv_resp(), since xfer_len is less than the expected_len
it resets the the timer to wait to 2 more jiffies in case the data frames are
already queued locally. However, for target does not support REC, it would just
send RJT w/ ELS_RJT_UNSUP. The rec response handler thus only clears the rport
flag for not doing REC later, but does not do fcp_io_complete() on the
associated fsp.
The fix is just check status of FCP_RSP being received already, i.e. using the
FC_SRB_RCV_STATUS flag, in fc_fcp_timeout before start sending REC. We should
have waited long enough if there is truely data frames queued locally.
Signed-off-by: Yi Zou <yi.zou@intel.com>
Tested-by: Ross Brattain <ross.b.brattain@intel.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Diffstat (limited to 'drivers/scsi/libfc')
| -rw-r--r-- | drivers/scsi/libfc/fc_fcp.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/scsi/libfc/fc_fcp.c b/drivers/scsi/libfc/fc_fcp.c index 3c96e9300d00..14243fa5f8e8 100644 --- a/drivers/scsi/libfc/fc_fcp.c +++ b/drivers/scsi/libfc/fc_fcp.c @@ -1380,10 +1380,10 @@ static void fc_fcp_timeout(unsigned long data) fsp->state |= FC_SRB_FCP_PROCESSING_TMO; - if (rpriv->flags & FC_RP_FLAGS_REC_SUPPORTED) - fc_fcp_rec(fsp); - else if (fsp->state & FC_SRB_RCV_STATUS) + if (fsp->state & FC_SRB_RCV_STATUS) fc_fcp_complete_locked(fsp); + else if (rpriv->flags & FC_RP_FLAGS_REC_SUPPORTED) + fc_fcp_rec(fsp); else fc_fcp_recovery(fsp, FC_TIMED_OUT); fsp->state &= ~FC_SRB_FCP_PROCESSING_TMO; |
