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authorBrian King <brking@linux.vnet.ibm.com>2008-12-18 09:26:51 -0600
committerJames Bottomley <James.Bottomley@HansenPartnership.com>2008-12-29 11:24:34 -0600
commitd2131b33c7e07c2905ee2f2321cc4dae1928c483 (patch)
tree9f1dfb9ab936ca7963f93106cb2eaf6c03f26850
parent87b5c328c7e32ab9075086f990001bffb7b19550 (diff)
[SCSI] ibmvfc: Improve async event handling
While doing various error injection testing, such as cable pulls and target moves, some issues were observed in handling these events. This patch improves the way these events are handled by increasing the delay waiting for the fabric to settle and also changes the behavior of Link Up to break the CRQ to ensure everything gets cleaned up properly on the VIOS. Signed-off-by: Brian King <brking@linux.vnet.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
-rw-r--r--drivers/scsi/ibmvscsi/ibmvfc.c10
-rw-r--r--drivers/scsi/ibmvscsi/ibmvfc.h2
2 files changed, 7 insertions, 5 deletions
diff --git a/drivers/scsi/ibmvscsi/ibmvfc.c b/drivers/scsi/ibmvscsi/ibmvfc.c
index a401e938a87..44f202f3310 100644
--- a/drivers/scsi/ibmvscsi/ibmvfc.c
+++ b/drivers/scsi/ibmvscsi/ibmvfc.c
@@ -2156,15 +2156,17 @@ static void ibmvfc_handle_async(struct ibmvfc_async_crq *crq,
case IBMVFC_AE_LINK_UP:
case IBMVFC_AE_RESUME:
vhost->events_to_log |= IBMVFC_AE_LINKUP;
- ibmvfc_init_host(vhost, 1);
+ vhost->delay_init = 1;
+ __ibmvfc_reset_host(vhost);
break;
case IBMVFC_AE_SCN_FABRIC:
+ case IBMVFC_AE_SCN_DOMAIN:
vhost->events_to_log |= IBMVFC_AE_RSCN;
- ibmvfc_init_host(vhost, 1);
+ vhost->delay_init = 1;
+ __ibmvfc_reset_host(vhost);
break;
case IBMVFC_AE_SCN_NPORT:
case IBMVFC_AE_SCN_GROUP:
- case IBMVFC_AE_SCN_DOMAIN:
vhost->events_to_log |= IBMVFC_AE_RSCN;
case IBMVFC_AE_ELS_LOGO:
case IBMVFC_AE_ELS_PRLO:
@@ -3619,7 +3621,7 @@ static void ibmvfc_do_work(struct ibmvfc_host *vhost)
if (vhost->delay_init) {
vhost->delay_init = 0;
spin_unlock_irqrestore(vhost->host->host_lock, flags);
- ssleep(5);
+ ssleep(15);
return;
} else
vhost->job_step(vhost);
diff --git a/drivers/scsi/ibmvscsi/ibmvfc.h b/drivers/scsi/ibmvscsi/ibmvfc.h
index cf02216dc8d..babdf3db59d 100644
--- a/drivers/scsi/ibmvscsi/ibmvfc.h
+++ b/drivers/scsi/ibmvscsi/ibmvfc.h
@@ -33,7 +33,7 @@
#define IBMVFC_DRIVER_DATE "(November 14, 2008)"
#define IBMVFC_DEFAULT_TIMEOUT 15
-#define IBMVFC_INIT_TIMEOUT 30
+#define IBMVFC_INIT_TIMEOUT 120
#define IBMVFC_MAX_REQUESTS_DEFAULT 100
#define IBMVFC_DEBUG 0