diff mbox series

[16/30] lpfc: Fix io lost on host resets

Message ID 20190312233033.32670-17-jsmart2021@gmail.com (mailing list archive)
State Accepted
Headers show
Series lpfc updates for 12.2.0.1 | expand

Commit Message

James Smart March 12, 2019, 11:30 p.m. UTC 
If the driver undergoes repeated host resets it starts losing
exchange structures and eventually returns SCSI_MLQUEUE_HOST_BUSY
and does not recover. The offline path is not reclaiming the
outstanding ios on the fcp pring txcmplq before calling
lpfc_destroy_multixripool, which causes the txmcplq to be reinit
and the resources lost.

Flush the fcp rings before destroying the multixripools.

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
---
 drivers/scsi/lpfc/lpfc_init.c | 7 +++++++
 1 file changed, 7 insertions(+)
diff mbox series

Patch

diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c
index 440b631c2155..212adc9d2c56 100644
--- a/drivers/scsi/lpfc/lpfc_init.c
+++ b/drivers/scsi/lpfc/lpfc_init.c
@@ -3250,6 +3250,13 @@  void lpfc_destroy_multixri_pools(struct lpfc_hba *phba)
 	if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME)
 		lpfc_destroy_expedite_pool(phba);
 
+	if (!(phba->pport->load_flag & FC_UNLOADING)) {
+		lpfc_sli_flush_fcp_rings(phba);
+
+		if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME)
+			lpfc_sli_flush_nvme_rings(phba);
+	}
+
 	hwq_count = phba->cfg_hdw_queue;
 
 	for (i = 0; i < hwq_count; i++) {