lkml.org 
[lkml]   [2019]   [May]   [29]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    From
    Subject[PATCH 5.1 364/405] scsi: lpfc: Fix io lost on host resets
    Date
    [ Upstream commit c66a91974634bfdf9d8e8736219d3b27621fa704 ]

    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>
    Signed-off-by: Sasha Levin <sashal@kernel.org>
    ---
    drivers/scsi/lpfc/lpfc_init.c | 7 +++++++
    1 file changed, 7 insertions(+)

    diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c
    index 7fcdaed3fa945..89a0c2bdb6a15 100644
    --- a/drivers/scsi/lpfc/lpfc_init.c
    +++ b/drivers/scsi/lpfc/lpfc_init.c
    @@ -3245,6 +3245,13 @@ 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++) {
    --
    2.20.1


    \
     
     \ /
      Last update: 2019-05-30 06:21    [W:4.040 / U:1.480 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site