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| author | James Smart <jsmart2021@gmail.com> | 2021-05-14 22:55:55 +0300 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2021-05-22 06:23:28 +0300 |
| commit | 04c1d9c50ae32d6efd0b71024b3829051821c7a2 (patch) | |
| tree | 551608aebbb29950fb93879a673ed23a9b4f1cec /drivers/scsi/lpfc/lpfc_sli.h | |
| parent | fe83e3b9b422ac8ece2359c7b7290efe7f0335a2 (diff) | |
| download | linux-04c1d9c50ae32d6efd0b71024b3829051821c7a2.tar.xz | |
scsi: lpfc: Ignore GID-FT response that may be received after a link flip
When a link bounce happens, there is a possibility that responses to
requests posted prior to the link bounce could be received. This is
problematic as the counter to track reglogin completion after link up can
become out of sync with the real state.
As there is no reason to process a request made in a prior link up context,
eliminate all the disturbance by tagging the request with the event_tag
maintained by the SLI Port for the link. The event_tag will change on every
link state transition. As long as the tag matches the current event_tag,
the response can be processed. If it doesn't match, just discard the
response.
Link: https://lore.kernel.org/r/20210514195559.119853-8-jsmart2021@gmail.com
Co-developed-by: Justin Tee <justin.tee@broadcom.com>
Signed-off-by: Justin Tee <justin.tee@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/lpfc_sli.h')
| -rw-r--r-- | drivers/scsi/lpfc/lpfc_sli.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/scsi/lpfc/lpfc_sli.h b/drivers/scsi/lpfc/lpfc_sli.h index 4f6936014ff5..e40da1a7ff77 100644 --- a/drivers/scsi/lpfc/lpfc_sli.h +++ b/drivers/scsi/lpfc/lpfc_sli.h @@ -1,7 +1,7 @@ /******************************************************************* * This file is part of the Emulex Linux Device Driver for * * Fibre Channel Host Bus Adapters. * - * Copyright (C) 2017-2020 Broadcom. All Rights Reserved. The term * + * Copyright (C) 2017-2021 Broadcom. All Rights Reserved. The term * * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries. * * Copyright (C) 2004-2016 Emulex. All rights reserved. * * EMULEX and SLI are trademarks of Emulex. * @@ -106,6 +106,7 @@ struct lpfc_iocbq { void *context1; /* caller context information */ void *context2; /* caller context information */ void *context3; /* caller context information */ + uint32_t event_tag; /* LA Event tag */ union { wait_queue_head_t *wait_queue; struct lpfc_iocbq *rsp_iocb; |