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scsi: qla2xxx: ensure async flags are reset correctly 

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: 3dbec59bdf ("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>
This commit is contained in:
Hannes Reinecke 2018-02-22 09:49:37 +01:00 committed by Martin K. Petersen
parent 07ea4b6026
commit fa83e65885
2 changed files with 12 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/scsi/qla2xxx/qla_gs.c
View File

@ -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;
}

13
drivers/scsi/qla2xxx/qla_init.c
View File

@ -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;
}
@ -263,7 +264,7 @@ 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;
}
@ -271,6 +272,7 @@ 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;
}
@ -1799,6 +1805,7 @@ 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;
}
@ -1806,6 +1813,7 @@ 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);
@ -1813,7 +1821,6 @@ qla2x00_async_adisc_done(struct scsi_qla_host *vha, fc_port_t *fcport,
}
/* Retry login. */
fcport->flags &= ~FCF_ASYNC_SENT;
if (data[1] & QLA_LOGIO_LOGIN_RETRIED)
set_bit(RELOGIN_NEEDED, &vha->dpc_flags);
else