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| author | Saurav Kashyap <skashyap@marvell.com> | 2020-08-07 04:06:56 -0700 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2020-08-20 21:41:52 -0400 |
| commit | 3079285bd73c0b3ea2528298cda7db77f9ea7eb7 (patch) | |
| tree | cceae245bb88bffb7f2ac8432b52c596579a3b74 /drivers/scsi/qedf | |
| parent | 22ddec31b0d424c997a49e8b3a5dfc2f2c827363 (diff) | |
| download | linux-3079285bd73c0b3ea2528298cda7db77f9ea7eb7.tar.gz | |
scsi: qedf: Fix race between ELS completion and flushing ELS request
Fix race between ELS completion and flushing ELS request. Link: https://lore.kernel.org/r/20200807110656.19965-8-jhasan@marvell.com Signed-off-by: Saurav Kashyap <skashyap@marvell.com> Signed-off-by: Javed Hasan <jhasan@marvell.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/qedf')
| -rw-r--r-- | drivers/scsi/qedf/qedf_els.c | 14 | ||||
| -rw-r--r-- | drivers/scsi/qedf/qedf_io.c | 2 |
2 files changed, 16 insertions, 0 deletions
diff --git a/drivers/scsi/qedf/qedf_els.c b/drivers/scsi/qedf/qedf_els.c index e2e80ea0656f..6cb8c9b40850 100644 --- a/drivers/scsi/qedf/qedf_els.c +++ b/drivers/scsi/qedf/qedf_els.c @@ -143,6 +143,7 @@ void qedf_process_els_compl(struct qedf_ctx *qedf, struct fcoe_cqe *cqe, struct qedf_ioreq *els_req) { struct fcoe_cqe_midpath_info *mp_info; + struct qedf_rport *fcport; QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS, "Entered with xid = 0x%x" " cmd_type = %d.\n", els_req->xid, els_req->cmd_type); @@ -156,6 +157,19 @@ void qedf_process_els_compl(struct qedf_ctx *qedf, struct fcoe_cqe *cqe, return; } + fcport = els_req->fcport; + + /* When flush is active, + * let the cmds be completed from the cleanup context + */ + if (test_bit(QEDF_RPORT_IN_TARGET_RESET, &fcport->flags) || + test_bit(QEDF_RPORT_IN_LUN_RESET, &fcport->flags)) { + QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_IO, + "Dropping ELS completion xid=0x%x as fcport is flushing", + els_req->xid); + return; + } + clear_bit(QEDF_CMD_OUTSTANDING, &els_req->flags); /* Kill the ELS timer */ diff --git a/drivers/scsi/qedf/qedf_io.c b/drivers/scsi/qedf/qedf_io.c index 7969f3aa8b61..86c8afb9a4eb 100644 --- a/drivers/scsi/qedf/qedf_io.c +++ b/drivers/scsi/qedf/qedf_io.c @@ -1562,6 +1562,8 @@ static void qedf_flush_els_req(struct qedf_ctx *qedf, */ els_req->event = QEDF_IOREQ_EV_ELS_FLUSH; + clear_bit(QEDF_CMD_OUTSTANDING, &els_req->flags); + /* Cancel the timer */ cancel_delayed_work_sync(&els_req->timeout_work); |