diff options
| author | Quinn Tran <quinn.tran@qlogic.com> | 2014-09-25 06:14:55 -0400 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2014-09-25 14:25:07 +0200 |
| commit | 33e7997755936ba92516c6ad69cd012c2e7d4dbb (patch) | |
| tree | 226806ebe455794fe94a4ac3bf8a4130197ed6f1 /drivers/scsi/qla2xxx/qla_os.c | |
| parent | f2ea653fd448b814dd92b6554ede85abd9e22d9f (diff) | |
qla2xxx: Add support for QFull throttling and Term Exchange retry
Through the qla target code, the qlt_send_term_exchange() routine
is used in various different places to cleanup an exchange. For the
case of IOCB request queue is full, the exchange is left unhandled/
dangling. Existing code does not have re-try logic to cleanup the
exchange. This patch add retry logic to cleanup the exchange before
letting new commands through.
For the case of FW running out of exchanges, driver need to reply
SAM_STAT_BUSY to the initiators. This patch add a pending queue
for the busy reply in case IOCB queue is unable to handle the cmd.
Cc: <stable@vger.kernel.org>
Signed-off-by: Quinn Tran <quinn.tran@qlogic.com>
Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'drivers/scsi/qla2xxx/qla_os.c')
| -rw-r--r-- | drivers/scsi/qla2xxx/qla_os.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c index 34e56e2faa0e..dabd25429c58 100644 --- a/drivers/scsi/qla2xxx/qla_os.c +++ b/drivers/scsi/qla2xxx/qla_os.c @@ -2398,6 +2398,8 @@ qla2x00_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) "Memory allocated for ha=%p.\n", ha); ha->pdev = pdev; ha->tgt.enable_class_2 = ql2xenableclass2; + INIT_LIST_HEAD(&ha->tgt.q_full_list); + spin_lock_init(&ha->tgt.q_full_lock); /* Clear our data area */ ha->bars = bars; |