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authorBrian King <brking@linux.vnet.ibm.com>2009-02-04 16:13:12 -0600
committerJames Bottomley <James.Bottomley@HansenPartnership.com>2009-02-10 11:15:18 -0500
commit0883e3b3a85b5860b7729f1279a52e95b87dea97 (patch)
treeb31b0b01588b2927799861bf7a2c7032f7607c6b /drivers/scsi/ibmvscsi
parentd4b17a20f30faf0debbc225bfbf98dba4e351c4d (diff)
[SCSI] ibmvfc: Fix rport relogin
The ibmvfc driver has a bug in its SCN handling. If it receives an ELS event such asn an N-Port SCN event or an unsolicited PLOGI, or any other SCN event which causes ibmvfc_reinit_host to be called, it is possible that we will call fc_remote_port_add for a target that already has an rport added, which can result in duplicate rports getting created for the same targets. Fix this by calling fc_remote_port_rolechg in this scenario instead to report any possible role change that may have occurred. Signed-off-by: Brian King <brking@linux.vnet.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Diffstat (limited to 'drivers/scsi/ibmvscsi')
-rw-r--r--drivers/scsi/ibmvscsi/ibmvfc.c12
1 files changed, 11 insertions, 1 deletions
diff --git a/drivers/scsi/ibmvscsi/ibmvfc.c b/drivers/scsi/ibmvscsi/ibmvfc.c
index 41226e3a741..ed1e728763a 100644
--- a/drivers/scsi/ibmvscsi/ibmvfc.c
+++ b/drivers/scsi/ibmvscsi/ibmvfc.c
@@ -3263,6 +3263,7 @@ static int ibmvfc_alloc_target(struct ibmvfc_host *vhost, u64 scsi_id)
return -ENOMEM;
}
+ memset(tgt, 0, sizeof(*tgt));
tgt->scsi_id = scsi_id;
tgt->new_scsi_id = scsi_id;
tgt->vhost = vhost;
@@ -3573,9 +3574,18 @@ static void ibmvfc_log_ae(struct ibmvfc_host *vhost, int events)
static void ibmvfc_tgt_add_rport(struct ibmvfc_target *tgt)
{
struct ibmvfc_host *vhost = tgt->vhost;
- struct fc_rport *rport;
+ struct fc_rport *rport = tgt->rport;
unsigned long flags;
+ if (rport) {
+ tgt_dbg(tgt, "Setting rport roles\n");
+ fc_remote_port_rolechg(rport, tgt->ids.roles);
+ spin_lock_irqsave(vhost->host->host_lock, flags);
+ ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE);
+ spin_unlock_irqrestore(vhost->host->host_lock, flags);
+ return;
+ }
+
tgt_dbg(tgt, "Adding rport\n");
rport = fc_remote_port_add(vhost->host, 0, &tgt->ids);
spin_lock_irqsave(vhost->host->host_lock, flags);