scsi: qla2xxx: ensure async flags are reset correctly

hreinecke · martinkpetersen · commit fa83e65885b9 · 2018-03-01T20:16:51.000-05:00
The fcport flags FCF_ASYNC_ACTIVE and FCF_ASYNC_SENT are used to throttle the state machine, so we need to ensure to always set and unset them correctly. Not doing so will lead to the state machine getting confused and no login attempt into remote ports. Cc: Quinn Tran <quinn.tran@cavium.com> Cc: Himanshu Madhani <himanshu.madhani@cavium.com> Fixes: 3dbec59 ("scsi: qla2xxx: Prevent multiple active discovery commands per session") Signed-off-by: Hannes Reinecke <hare@suse.com> Acked-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
diff --git a/drivers/scsi/qla2xxx/qla_gs.c b/drivers/scsi/qla2xxx/qla_gs.c
@@ -3179,6 +3179,7 @@ int qla24xx_async_gidpn(scsi_qla_host_t *vha, fc_port_t *fcport)
 	sp->free(sp);
 	fcport->flags &= ~FCF_ASYNC_SENT;
 done:
+	fcport->flags &= ~FCF_ASYNC_ACTIVE;
 	return rval;
 }
 
@@ -3370,6 +3371,7 @@ int qla24xx_async_gpsc(scsi_qla_host_t *vha, fc_port_t *fcport)
 	sp->free(sp);
 	fcport->flags &= ~FCF_ASYNC_SENT;
 done:
+	fcport->flags &= ~FCF_ASYNC_ACTIVE;
 	return rval;
 }
 
diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c
@@ -213,6 +213,7 @@ qla2x00_async_login(struct scsi_qla_host *vha, fc_port_t *fcport,
 	sp->free(sp);
 	fcport->flags &= ~FCF_ASYNC_SENT;
 done:
+	fcport->flags &= ~FCF_ASYNC_ACTIVE;
 	return rval;
 }
 
@@ -263,14 +264,15 @@ qla2x00_async_logout(struct scsi_qla_host *vha, fc_port_t *fcport)
 done_free_sp:
 	sp->free(sp);
 done:
-	fcport->flags &= ~FCF_ASYNC_SENT;
+	fcport->flags &= ~(FCF_ASYNC_SENT | FCF_ASYNC_ACTIVE);
 	return rval;
 }
 
 void
 qla2x00_async_prlo_done(struct scsi_qla_host *vha, fc_port_t *fcport,
     uint16_t *data)
 {
+	fcport->flags &= ~FCF_ASYNC_ACTIVE;
 	/* Don't re-login in target mode */
 	if (!fcport->tgt_session)
 		qla2x00_mark_device_lost(vha, fcport, 1, 0);
@@ -284,6 +286,7 @@ qla2x00_async_prlo_sp_done(void *s, int res)
 	struct srb_iocb *lio = &sp->u.iocb_cmd;
 	struct scsi_qla_host *vha = sp->vha;
 
+	sp->fcport->flags &= ~FCF_ASYNC_ACTIVE;
 	if (!test_bit(UNLOADING, &vha->dpc_flags))
 		qla2x00_post_async_prlo_done_work(sp->fcport->vha, sp->fcport,
 		    lio->u.logio.data);
@@ -322,6 +325,7 @@ qla2x00_async_prlo(struct scsi_qla_host *vha, fc_port_t *fcport)
 done_free_sp:
 	sp->free(sp);
 done:
+	fcport->flags &= ~FCF_ASYNC_ACTIVE;
 	return rval;
 }
 
@@ -375,6 +379,8 @@ qla2x00_async_adisc_sp_done(void *ptr, int res)
 	    "Async done-%s res %x %8phC\n",
 	    sp->name, res, sp->fcport->port_name);
 
+	sp->fcport->flags &= ~FCF_ASYNC_SENT;
+
 	memset(&ea, 0, sizeof(ea));
 	ea.event = FCME_ADISC_DONE;
 	ea.rc = res;
@@ -425,7 +431,7 @@ qla2x00_async_adisc(struct scsi_qla_host *vha, fc_port_t *fcport,
 done_free_sp:
 	sp->free(sp);
 done:
-	fcport->flags &= ~FCF_ASYNC_SENT;
+	fcport->flags &= ~(FCF_ASYNC_SENT | FCF_ASYNC_ACTIVE);
 	qla2x00_post_async_adisc_work(vha, fcport, data);
 	return rval;
 }
@@ -1799,21 +1805,22 @@ qla2x00_async_logout_done(struct scsi_qla_host *vha, fc_port_t *fcport,
 	qla2x00_mark_device_lost(vha, fcport, 1, 0);
 	qlt_logo_completion_handler(fcport, data[0]);
 	fcport->login_gen++;
+	fcport->flags &= ~FCF_ASYNC_ACTIVE;
 	return;
 }
 
 void
 qla2x00_async_adisc_done(struct scsi_qla_host *vha, fc_port_t *fcport,
     uint16_t *data)
 {
+	fcport->flags &= ~(FCF_ASYNC_SENT | FCF_ASYNC_ACTIVE);
 	if (data[0] == MBS_COMMAND_COMPLETE) {
 		qla2x00_update_fcport(vha, fcport);
 
 		return;
 	}
 
 	/* Retry login. */
-	fcport->flags &= ~FCF_ASYNC_SENT;
 	if (data[1] & QLA_LOGIO_LOGIN_RETRIED)
 		set_bit(RELOGIN_NEEDED, &vha->dpc_flags);
 	else

Original file line number	Diff line number	Diff line change
`@@ -3179,6 +3179,7 @@ int qla24xx_async_gidpn(scsi_qla_host_t vha, fc_port_t fcport)`
`3179`	`3179`	`sp->free(sp);`
`3180`	`3180`	`fcport->flags &= ~FCF_ASYNC_SENT;`
`3181`	`3181`	`done:`
	`3182`	`+ fcport->flags &= ~FCF_ASYNC_ACTIVE;`
`3182`	`3183`	`return rval;`
`3183`	`3184`	`}`
`3184`	`3185`
`@@ -3370,6 +3371,7 @@ int qla24xx_async_gpsc(scsi_qla_host_t vha, fc_port_t fcport)`
`3370`	`3371`	`sp->free(sp);`
`3371`	`3372`	`fcport->flags &= ~FCF_ASYNC_SENT;`
`3372`	`3373`	`done:`
	`3374`	`+ fcport->flags &= ~FCF_ASYNC_ACTIVE;`
`3373`	`3375`	`return rval;`
`3374`	`3376`	`}`
`3375`	`3377`