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[SCSI] fc transport: restore missing dev_loss_tmo callback to LLDD 

When we reworked the transport for the rport lifetimes, in cases where the
rport was reused as a container for tgt id bindings, we inadvertantly
removed the callback to the driver indicating that dev_loss_tmo had fired.

This patch restores that functionality.

Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
This commit is contained in:
James Smart 2009-01-05 12:14:18 -05:00 committed by James Bottomley
parent 58607b30fc
commit 4be98c0ca3
2 changed files with 20 additions and 2 deletions
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21
drivers/scsi/scsi_transport_fc.c
View File

@ -2407,8 +2407,12 @@ fc_rport_final_delete(struct work_struct *work)
/*
* Notify the driver that the rport is now dead. The LLDD will
* also guarantee that any communication to the rport is terminated
*
* Avoid this call if we already called it when we preserved the
* rport for the binding.
*/
if (i->f->dev_loss_tmo_callbk)
if (!(rport->flags & FC_RPORT_DEVLOSS_CALLBK_DONE) &&
(i->f->dev_loss_tmo_callbk))
i->f->dev_loss_tmo_callbk(rport);
transport_remove_device(dev);
@ -2647,7 +2651,8 @@ fc_remote_port_add(struct Scsi_Host *shost, int channel,
spin_lock_irqsave(shost->host_lock, flags);
rport->flags &= ~(FC_RPORT_FAST_FAIL_TIMEDOUT |
FC_RPORT_DEVLOSS_PENDING);
FC_RPORT_DEVLOSS_PENDING |
FC_RPORT_DEVLOSS_CALLBK_DONE);
/* if target, initiate a scan */
if (rport->scsi_target_id != -1) {
@ -2944,6 +2949,7 @@ fc_timeout_deleted_rport(struct work_struct *work)
struct fc_rport *rport =
container_of(work, struct fc_rport, dev_loss_work.work);
struct Scsi_Host *shost = rport_to_shost(rport);
struct fc_internal *i = to_fc_internal(shost->transportt);
struct fc_host_attrs *fc_host = shost_to_fc_host(shost);
unsigned long flags;
@ -3011,6 +3017,7 @@ fc_timeout_deleted_rport(struct work_struct *work)
rport->roles = FC_PORT_ROLE_UNKNOWN;
rport->port_state = FC_PORTSTATE_NOTPRESENT;
rport->flags &= ~FC_RPORT_FAST_FAIL_TIMEDOUT;
rport->flags |= FC_RPORT_DEVLOSS_CALLBK_DONE;
/*
* Pre-emptively kill I/O rather than waiting for the work queue
@ -3046,8 +3053,18 @@ fc_timeout_deleted_rport(struct work_struct *work)
* all attached scsi devices.
*/
fc_queue_work(shost, &rport->stgt_delete_work);
/*
* Notify the driver that the rport is now dead. The LLDD will
* also guarantee that any communication to the rport is terminated
*
* Note: we set the CALLBK_DONE flag above to correspond
*/
if (i->f->dev_loss_tmo_callbk)
i->f->dev_loss_tmo_callbk(rport);
}
/**
* fc_timeout_fail_rport_io - Timeout handler for a fast io failing on a disconnected SCSI target.
* @work: rport to terminate io on.

1
include/scsi/scsi_transport_fc.h
View File

@ -358,6 +358,7 @@ struct fc_rport { /* aka fc_starget_attrs */
#define FC_RPORT_DEVLOSS_PENDING 0x01
#define FC_RPORT_SCAN_PENDING 0x02
#define FC_RPORT_FAST_FAIL_TIMEDOUT 0x04
#define FC_RPORT_DEVLOSS_CALLBK_DONE 0x08
#define dev_to_rport(d) \
container_of(d, struct fc_rport, dev)