From caebe51bcfeb4676793f622538e4f1f5bbfcd77f Mon Sep 17 00:00:00 2001 From: Gleb Chesnokov Date: Fri, 25 Mar 2022 16:51:12 +0300 Subject: [PATCH] qla2x00t-32gbit: Fix hang due to session stuck User experienced device lost. The log shows Get port data base command was queued up, failed, and requeued again. Every time it is requeued, it set the FCF_ASYNC_ACTIVE. This prevents any recovery code from occurring because driver thinks a recovery is in progress for this session. In essence, this session is hung. The reason it gets into this place is the session deletion got in front of this call due to link perturbation. Break the requeue cycle and exit. The session deletion code will trigger a session relogin. Link: https://lore.kernel.org/r/20220310092604.22950-8-njavali@marvell.com Fixes: 726b85487067 ("qla2xxx: Add framework for async fabric discovery") Cc: stable@vger.kernel.org Reviewed-by: Himanshu Madhani Signed-off-by: Quinn Tran Signed-off-by: Nilesh Javali Signed-off-by: Martin K. Petersen [ commit c02aada06d19 upstream ] --- qla2x00t-32gbit/qla_def.h | 4 ++++ qla2x00t-32gbit/qla_init.c | 19 +++++++++++++++++-- 2 files changed, 21 insertions(+), 2 deletions(-) diff --git a/qla2x00t-32gbit/qla_def.h b/qla2x00t-32gbit/qla_def.h index cfdf24909..e839817c3 100644 --- a/qla2x00t-32gbit/qla_def.h +++ b/qla2x00t-32gbit/qla_def.h @@ -5484,4 +5484,8 @@ struct ql_vnd_tgt_stats_resp { #include "qla_gbl.h" #include "qla_dbg.h" #include "qla_inline.h" + +#define IS_SESSION_DELETED(_fcport) (_fcport->disc_state == DSC_DELETE_PEND || \ + _fcport->disc_state == DSC_DELETED) + #endif diff --git a/qla2x00t-32gbit/qla_init.c b/qla2x00t-32gbit/qla_init.c index 78216b3c0..1eda8f3d0 100644 --- a/qla2x00t-32gbit/qla_init.c +++ b/qla2x00t-32gbit/qla_init.c @@ -575,6 +575,14 @@ qla2x00_async_adisc(struct scsi_qla_host *vha, fc_port_t *fcport, struct srb_iocb *lio; int rval = QLA_FUNCTION_FAILED; + if (IS_SESSION_DELETED(fcport)) { + ql_log(ql_log_warn, vha, 0xffff, + "%s: %8phC is being delete - not sending command.\n", + __func__, fcport->port_name); + fcport->flags &= ~FCF_ASYNC_ACTIVE; + return rval; + } + if (!vha->flags.online || (fcport->flags & FCF_ASYNC_SENT)) return rval; @@ -1338,8 +1346,15 @@ int qla24xx_async_gpdb(struct scsi_qla_host *vha, fc_port_t *fcport, u8 opt) struct port_database_24xx *pd; struct qla_hw_data *ha = vha->hw; - if (!vha->flags.online || (fcport->flags & FCF_ASYNC_SENT) || - fcport->loop_id == FC_NO_LOOP_ID) { + if (IS_SESSION_DELETED(fcport)) { + ql_log(ql_log_warn, vha, 0xffff, + "%s: %8phC is being delete - not sending command.\n", + __func__, fcport->port_name); + fcport->flags &= ~FCF_ASYNC_ACTIVE; + return rval; + } + + if (!vha->flags.online || fcport->flags & FCF_ASYNC_SENT) { ql_log(ql_log_warn, vha, 0xffff, "%s: %8phC online %d flags %x - not sending command.\n", __func__, fcport->port_name, vha->flags.online, fcport->flags);