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authorVasu Dev <vasu.dev@intel.com>2009-12-10 09:59:31 -0800
committerJames Bottomley <James.Bottomley@suse.de>2009-12-12 16:30:34 -0600
commit55a66d3c1e57f7e3e554d6ec8011e840f3802f20 (patch)
treeb13e6446ce4d397e5c7d774bf942a2563e1248e5 /drivers/scsi/libfc/fc_lport.c
parentc1ecb90a66c5afc7cc5c9349f9c3714eef4a5cfb (diff)
[SCSI] fcoe, libfc: adds enable/disable for fcoe interface
This is to allow fcoemon util to enable or disable a fcoe interface according to DCB link state change. Adds sysfs module param enable and disable for this and also updates existing other module param description to be consistent and more accurate since older description had double "fcoe" word with less meaningful netdev reference to user space. Adds code to ignore redundant fc_lport_enter_reset handling for a already disabled fcoe interface by checking LPORT_ST_DISABLED or LPORT_ST_LOGO states, this also prevents lport state transition on link flap on a disabled interface. Above changes required lport state transition to get out of disabled or logo state on call to fc_fabric_login. Signed-off-by: Vasu Dev <vasu.dev@intel.com> Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Diffstat (limited to 'drivers/scsi/libfc/fc_lport.c')
-rw-r--r--drivers/scsi/libfc/fc_lport.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/scsi/libfc/fc_lport.c b/drivers/scsi/libfc/fc_lport.c
index 74338c83ad0a..0b165024a219 100644
--- a/drivers/scsi/libfc/fc_lport.c
+++ b/drivers/scsi/libfc/fc_lport.c
@@ -537,7 +537,9 @@ int fc_fabric_login(struct fc_lport *lport)
int rc = -1;
mutex_lock(&lport->lp_mutex);
- if (lport->state == LPORT_ST_DISABLED) {
+ if (lport->state == LPORT_ST_DISABLED ||
+ lport->state == LPORT_ST_LOGO) {
+ fc_lport_state_enter(lport, LPORT_ST_RESET);
fc_lport_enter_reset(lport);
rc = 0;
}
@@ -967,6 +969,9 @@ static void fc_lport_enter_reset(struct fc_lport *lport)
FC_LPORT_DBG(lport, "Entered RESET state from %s state\n",
fc_lport_state(lport));
+ if (lport->state == LPORT_ST_DISABLED || lport->state == LPORT_ST_LOGO)
+ return;
+
if (lport->vport) {
if (lport->link_up)
fc_vport_set_state(lport->vport, FC_VPORT_INITIALIZING);