qla2xxx: Add framework for async fabric discovery
Currently code performs a full scan of the fabric for
every RSCN. Its an expensive process in a noisy large SAN.
This patch optimizes expensive fabric discovery process by
scanning switch for the affected port when RSCN is received.
Currently Initiator Mode code makes login/logout decision without
knowledge of target mode. This causes driver and firmware to go
out-of-sync. This framework synchronizes both initiator mode
personality and target mode personality in making login/logout
decision.
This patch adds following capabilities in the driver
- Send Notification Acknowledgement asynchronously.
- Update session/fcport state asynchronously.
- Create a session or fcport struct asynchronously.
- Send GNL asynchronously. The command will ask FW to
provide a list of FC Port entries FW knows about.
- Send GPDB asynchronously. The command will ask FW to
provide detail data of an FC Port FW knows about or
perform ADISC to verify the state of the session.
- Send GPNID asynchronously. The command will ask switch
to provide WWPN for provided NPort ID.
- Send GPSC asynchronously. The command will ask switch
to provide registered port speed for provided WWPN.
- Send GIDPN asynchronously. The command will ask the
switch to provide Nport ID for provided WWPN.
- In driver unload path, schedule all session for deletion
and wait for deletion to complete before allowing driver
unload to proceed.
Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
[ bvanassche: fixed spelling in patch description ]
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
diff --git a/drivers/scsi/qla2xxx/qla_inline.h b/drivers/scsi/qla2xxx/qla_inline.h
index 44e4045..647828b 100644
--- a/drivers/scsi/qla2xxx/qla_inline.h
+++ b/drivers/scsi/qla2xxx/qla_inline.h
@@ -166,8 +166,8 @@ qla2x00_set_fcport_state(fc_port_t *fcport, int state)
/* Don't print state transitions during initial allocation of fcport */
if (old_state && old_state != state) {
ql_dbg(ql_dbg_disc, fcport->vha, 0x207d,
- "FCPort state transitioned from %s to %s - "
- "portid=%02x%02x%02x.\n",
+ "FCPort %8phC state transitioned from %s to %s - "
+ "portid=%02x%02x%02x.\n", fcport->port_name,
port_state_str[old_state], port_state_str[state],
fcport->d_id.b.domain, fcport->d_id.b.area,
fcport->d_id.b.al_pa);
@@ -263,6 +263,7 @@ qla2x00_get_sp(scsi_qla_host_t *vha, fc_port_t *fcport, gfp_t flag)
memset(sp, 0, sizeof(*sp));
sp->fcport = fcport;
sp->iocbs = 1;
+ sp->vha = vha;
done:
if (!sp)
QLA_VHA_MARK_NOT_BUSY(vha);
@@ -285,7 +286,7 @@ qla2x00_init_timer(srb_t *sp, unsigned long tmo)
sp->u.iocb_cmd.timer.function = qla2x00_sp_timeout;
add_timer(&sp->u.iocb_cmd.timer);
sp->free = qla2x00_sp_free;
- if ((IS_QLAFX00(sp->fcport->vha->hw)) &&
+ if ((IS_QLAFX00(((scsi_qla_host_t *)sp->vha)->hw)) &&
(sp->type == SRB_FXIOCB_DCMD))
init_completion(&sp->u.iocb_cmd.u.fxiocb.fxiocb_comp);
if (sp->type == SRB_ELS_DCMD)