diff options
| author | Satish Kharat <satishkh@cisco.com> | 2016-03-18 11:22:50 -0700 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2016-04-11 16:57:09 -0400 |
| commit | 1b6ac5e3ff354652ca59240e1ba8b2d22539df07 (patch) | |
| tree | 0db370df3cab25a11c960d365b6eb7756e111c20 | |
| parent | a36f5dd07dd9098d43d1137ec7a2d6b92aa6d591 (diff) | |
| download | blackbird-op-linux-1b6ac5e3ff354652ca59240e1ba8b2d22539df07.tar.gz blackbird-op-linux-1b6ac5e3ff354652ca59240e1ba8b2d22539df07.zip | |
fnic: Using rport->dd_data to check rport online instead of rport_lookup.
When issuing I/O we check if rport is online through libfc
rport_lookup() function which needs to be protected by mutex lock that
cannot acquired in I/O context. The change is to use midlayer remote
port s dd_data which is preserved until its devloss timeout and no
protection is required. The the scsi_cmnd error code is expected to be
in the left 16 bits of the result field. Changed to correct this. Fnic
driver version changed from 1.6.0.20 to 1.6.0.21
Signed-off-by: Satish Kharat <satishkh@cisco.com>
Signed-off-by: Sesidhar Baddela <sebaddel@cisco.com>
Reviewed-by: Ewan Milne <emilne@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
| -rw-r--r-- | drivers/scsi/fnic/fnic.h | 2 | ||||
| -rw-r--r-- | drivers/scsi/fnic/fnic_scsi.c | 20 |
2 files changed, 12 insertions, 10 deletions
diff --git a/drivers/scsi/fnic/fnic.h b/drivers/scsi/fnic/fnic.h index 1023eaea17f3..9ddc9200e0a4 100644 --- a/drivers/scsi/fnic/fnic.h +++ b/drivers/scsi/fnic/fnic.h @@ -39,7 +39,7 @@ #define DRV_NAME "fnic" #define DRV_DESCRIPTION "Cisco FCoE HBA Driver" -#define DRV_VERSION "1.6.0.20" +#define DRV_VERSION "1.6.0.21" #define PFX DRV_NAME ": " #define DFX DRV_NAME "%d: " diff --git a/drivers/scsi/fnic/fnic_scsi.c b/drivers/scsi/fnic/fnic_scsi.c index 588ffd9a33d6..d9fd2f841585 100644 --- a/drivers/scsi/fnic/fnic_scsi.c +++ b/drivers/scsi/fnic/fnic_scsi.c @@ -439,7 +439,6 @@ static int fnic_queuecommand_lck(struct scsi_cmnd *sc, void (*done)(struct scsi_ int sg_count = 0; unsigned long flags = 0; unsigned long ptr; - struct fc_rport_priv *rdata; spinlock_t *io_lock = NULL; int io_lock_acquired = 0; @@ -455,14 +454,17 @@ static int fnic_queuecommand_lck(struct scsi_cmnd *sc, void (*done)(struct scsi_ return 0; } - rdata = lp->tt.rport_lookup(lp, rport->port_id); - if (!rdata || (rdata->rp_state == RPORT_ST_DELETE)) { - FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, - "returning IO as rport is removed\n"); - atomic64_inc(&fnic_stats->misc_stats.rport_not_ready); - sc->result = DID_NO_CONNECT; - done(sc); - return 0; + if (rport) { + struct fc_rport_libfc_priv *rp = rport->dd_data; + + if (!rp || rp->rp_state != RPORT_ST_READY) { + FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, + "returning DID_NO_CONNECT for IO as rport is removed\n"); + atomic64_inc(&fnic_stats->misc_stats.rport_not_ready); + sc->result = DID_NO_CONNECT<<16; + done(sc); + return 0; + } } if (lp->state != LPORT_ST_READY || !(lp->link_up)) |
