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authorJames Smart <jsmart2021@gmail.com>2019-03-12 16:30:19 -0700
committerMartin K. Petersen <martin.petersen@oracle.com>2019-03-19 13:15:09 -0400
commitc66a91974634bfdf9d8e8736219d3b27621fa704 (patch)
treefde56d7651dbcae59f64bdc9f731601c9b678ab5 /drivers/scsi/lpfc
parente8869f5b0a7273fcf20ef99066fd8129e58ba5b7 (diff)
scsi: lpfc: Fix io lost on host resets
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> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/lpfc')
-rw-r--r--drivers/scsi/lpfc/lpfc_init.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c
index 05fbb4765d70..e3ff07f342dc 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++) {