From: Quinn Tran qutran@marvell.com
[ Upstream commit 91f6f5fbe87ba834133fcc61d34881cb8ec9e518 ]
On ipsec start by remote port, target port may use RSCN to trigger initiator to relogin. If driver is already in the process of a relogin, then ignore the RSCN and allow the current relogin to continue. This reduces thrashing of the connection.
Link: https://lore.kernel.org/r/20211026115412.27691-10-njavali@marvell.com Reviewed-by: Himanshu Madhani himanshu.madhani@oracle.com Signed-off-by: Quinn Tran qutran@marvell.com Signed-off-by: Nilesh Javali njavali@marvell.com Signed-off-by: Martin K. Petersen martin.petersen@oracle.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/scsi/qla2xxx/qla_attr.c | 7 ++++++- drivers/scsi/qla2xxx/qla_edif.h | 4 ++++ drivers/scsi/qla2xxx/qla_init.c | 24 ++++++++++++++++++++++-- 3 files changed, 32 insertions(+), 3 deletions(-)
diff --git a/drivers/scsi/qla2xxx/qla_attr.c b/drivers/scsi/qla2xxx/qla_attr.c index d3534e7f2d21..bd4ebc1b5c1e 100644 --- a/drivers/scsi/qla2xxx/qla_attr.c +++ b/drivers/scsi/qla2xxx/qla_attr.c @@ -2754,7 +2754,12 @@ qla2x00_terminate_rport_io(struct fc_rport *rport) if (fcport->loop_id != FC_NO_LOOP_ID) fcport->logout_on_delete = 1;
- qlt_schedule_sess_for_deletion(fcport); + if (!EDIF_NEGOTIATION_PENDING(fcport)) { + ql_dbg(ql_dbg_disc, fcport->vha, 0x911e, + "%s %d schedule session deletion\n", __func__, + __LINE__); + qlt_schedule_sess_for_deletion(fcport); + } } else { qla2x00_port_logout(fcport->vha, fcport); } diff --git a/drivers/scsi/qla2xxx/qla_edif.h b/drivers/scsi/qla2xxx/qla_edif.h index 32800bfb32a3..2517005fb08c 100644 --- a/drivers/scsi/qla2xxx/qla_edif.h +++ b/drivers/scsi/qla2xxx/qla_edif.h @@ -133,4 +133,8 @@ struct enode { _s->disc_state == DSC_DELETED || \ !_s->edif.app_sess_online))
+#define EDIF_NEGOTIATION_PENDING(_fcport) \ + ((_fcport->vha.e_dbell.db_flags & EDB_ACTIVE) && \ + (_fcport->disc_state == DSC_LOGIN_AUTH_PEND)) + #endif /* __QLA_EDIF_H */ diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c index be150fc76dba..09ddaa8cb653 100644 --- a/drivers/scsi/qla2xxx/qla_init.c +++ b/drivers/scsi/qla2xxx/qla_init.c @@ -1825,8 +1825,28 @@ void qla2x00_handle_rscn(scsi_qla_host_t *vha, struct event_arg *ea) fcport->d_id.b24, fcport->port_name); return; } - fcport->scan_needed = 1; - fcport->rscn_gen++; + + if (vha->hw->flags.edif_enabled && vha->e_dbell.db_flags & EDB_ACTIVE) { + /* + * On ipsec start by remote port, Target port + * may use RSCN to trigger initiator to + * relogin. If driver is already in the + * process of a relogin, then ignore the RSCN + * and allow the current relogin to continue. + * This reduces thrashing of the connection. + */ + if (atomic_read(&fcport->state) == FCS_ONLINE) { + /* + * If state = online, then set scan_needed=1 to do relogin. + * Otherwise we're already in the middle of a relogin + */ + fcport->scan_needed = 1; + fcport->rscn_gen++; + } + } else { + fcport->scan_needed = 1; + fcport->rscn_gen++; + } } break; case RSCN_AREA_ADDR: