From: Anastasia Kovaleva <a.kovaleva@xxxxxxxxx> [ Upstream commit fcb16d9a8ecf1e9bfced0fc654ea4e2caa7517f4 ] In a case when the initiator in P2P mode by some circumstances does not send PRLI, the target, in a case when the target port's WWPN is less than initiator's, changes the discovery state in DSC_GNL. When gnl completes it sends PRLI to the initiator. Usually the initiator in P2P mode always sends PRLI. We caught this issue on Linux stable v5.4.6 https://www.spinics.net/lists/stable/msg458515.html. Fix this particular corner case in the behaviour of the P2P mod target login state machine. Link: https://lore.kernel.org/r/20210422153414.4022-1-a.kovaleva@xxxxxxxxx Fixes: a9ed06d4e640 ("scsi: qla2xxx: Allow PLOGI in target mode") Reviewed-by: Roman Bolshakov <r.bolshakov@xxxxxxxxx> Reviewed-by: Himanshu Madhani <himanshu.madhani@xxxxxxxxxx> Signed-off-by: Anastasia Kovaleva <a.kovaleva@xxxxxxxxx> Signed-off-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> --- drivers/scsi/qla2xxx/qla_init.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c index 52e8b555bd1d..6faf34fa6220 100644 --- a/drivers/scsi/qla2xxx/qla_init.c +++ b/drivers/scsi/qla2xxx/qla_init.c @@ -1190,6 +1190,9 @@ static int qla24xx_post_prli_work(struct scsi_qla_host *vha, fc_port_t *fcport) { struct qla_work_evt *e; + if (vha->host->active_mode == MODE_TARGET) + return QLA_FUNCTION_FAILED; + e = qla2x00_alloc_work(vha, QLA_EVT_PRLI); if (!e) return QLA_FUNCTION_FAILED; -- 2.30.2
