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| author |   Yi Zou <yi.zou@intel.com> | 2009-10-21 16:27:12 -0700 |
|---|---|---|
| committer |   James Bottomley <James.Bottomley@suse.de> | 2009-12-04 12:00:27 -0600 |
| commit | 4347fa66878e079766258bc0d077c350cb31a799 (patch) | |
| tree | fce5fee754b75169e6983914a077a1732932ad75 /drivers/scsi/libfc/fc_exch.c | |
| parent | [SCSI] libfc: Remove unused fc_lport pointer from fc_fcp_pkt_abort (diff) | |
| download | wireguard-linux-4347fa66878e079766258bc0d077c350cb31a799.tar.xz wireguard-linux-4347fa66878e079766258bc0d077c350cb31a799.zip | |
[SCSI] libfc: Fix wrong scsi return status under FC_DATA_UNDRUN
This bug is exposed when there is a link flap in LLD. Particularly, when it
happens right after a SCSI write command is sent out, no FCP_DATA is sent,
causing fsp->status_code to be set as FC_DATA_UNDRUN in fc_fcp_complete_locked
even no SCSI status is received. Consequently, fc_io_compl treats this as DID_OK.
This results in SCSI returning successful to the initial I/O request even
there is no DATA actually sent. Particularly, if you run an I/O tool w/ data
verification on, the read back for verification is gonna fail.
This is fixed here by checking when FC_DATA_UNDRUN happens, SCSI status is
received w/ FC_SRB_RCV_STATUS set in fsp->state.
Signed-off-by: Yi Zou <yi.zou@intel.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Diffstat (limited to 'drivers/scsi/libfc/fc_exch.c')
0 files changed, 0 insertions, 0 deletions