Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-15 08:31:55 +00:00
Code Issues Packages Projects Releases Wiki Activity

[SCSI] libfc: stop login after fabric logoff

Browse Source 
When removing the fcoe module, several lports were being shut down
through fc_lport_fabric_logoff().

Occasionally, one would enter reset state before fc_lport_destroy()
was called, and since link_up was still true, it would log back in.

If we just clear link_up earlier, then we wouldn't be accepting LOGO
requests from other initiators while we are shutting down.

Fix by changing the LOGO response handler to enter DISABLED instead
of RESET.  Add an fc_lport_enter_disabled() function which does
what fc_lport_enter_reset() did, except it doesn't proceed to FLOGI state.

Move the code that was common between fc_lport_enter_reset() and
fc_lport_enter_disabled() into a new fc_lport_reset_locked() function.

Signed-off-by: Joe Eykholt <jeykholt@cisco.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
This commit is contained in:
Joe Eykholt 2009-07-29 17:04:27 -07:00 committed by James Bottomley
parent b1d9fd5574
commit 1190d92581
1 changed files with 34 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

42
drivers/scsi/libfc/fc_lport.c
View File

@ -930,19 +930,14 @@ int fc_lport_reset(struct fc_lport *lport)
EXPORT_SYMBOL(fc_lport_reset);
/**
* fc_rport_enter_reset() - Reset the local port
* fc_lport_reset_locked() - Reset the local port
* @lport: Fibre Channel local port to be reset
*
* Locking Note: The lport lock is expected to be held before calling
* this routine.
*/
static void fc_lport_enter_reset(struct fc_lport *lport)
static void fc_lport_reset_locked(struct fc_lport *lport)
{
FC_LPORT_DBG(lport, "Entered RESET state from %s state\n",
fc_lport_state(lport));
fc_lport_state_enter(lport, LPORT_ST_RESET);
if (lport->dns_rp)
lport->tt.rport_logoff(lport->dns_rp);
@ -956,11 +951,42 @@ static void fc_lport_enter_reset(struct fc_lport *lport)
lport->tt.exch_mgr_reset(lport, 0, 0);
fc_host_fabric_name(lport->host) = 0;
fc_host_port_id(lport->host) = 0;
}
/**
* fc_lport_enter_reset() - Reset the local port
* @lport: Fibre Channel local port to be reset
*
* Locking Note: The lport lock is expected to be held before calling
* this routine.
*/
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));
fc_lport_state_enter(lport, LPORT_ST_RESET);
fc_lport_reset_locked(lport);
if (lport->link_up)
fc_lport_enter_flogi(lport);
}
/**
* fc_lport_enter_disabled() - disable the local port
* @lport: Fibre Channel local port to be reset
*
* Locking Note: The lport lock is expected to be held before calling
* this routine.
*/
static void fc_lport_enter_disabled(struct fc_lport *lport)
{
FC_LPORT_DBG(lport, "Entered disabled state from %s state\n",
fc_lport_state(lport));
fc_lport_state_enter(lport, LPORT_ST_DISABLED);
fc_lport_reset_locked(lport);
}
/**
* fc_lport_error() - Handler for any errors
* @lport: The fc_lport object
@ -1382,7 +1408,7 @@ static void fc_lport_logo_resp(struct fc_seq *sp, struct fc_frame *fp,
op = fc_frame_payload_op(fp);
if (op == ELS_LS_ACC)
fc_lport_enter_reset(lport);
fc_lport_enter_disabled(lport);
else
fc_lport_error(lport, fp);