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scsi: libfc: reset exchange manager during LOGO handling 

FC-LS mandates that we should invalidate all sequences before sending a
LOGO. And we should set the event to RPORT_EV_STOP when a LOGO request
has been received to signal that all exchanges are terminated.

Signed-off-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Chad Dupuis <chad.dupuis@qlogic.com>
Tested-by: Chad Dupuis <chad.dupuis@qlogic.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Hannes Reinecke 2016-08-05 14:55:02 +02:00 committed by Martin K. Petersen
parent d391966a03
commit 649eb86938
1 changed files with 13 additions and 1 deletions
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14
drivers/scsi/libfc/fc_rport.c
View File

@ -457,6 +457,9 @@ static void fc_rport_enter_delete(struct fc_rport_priv *rdata,
*/
static int fc_rport_logoff(struct fc_rport_priv *rdata)
{
struct fc_lport *lport = rdata->local_port;
u32 port_id = rdata->ids.port_id;
mutex_lock(&rdata->rp_mutex);
FC_RPORT_DBG(rdata, "Remove port\n");
@ -466,6 +469,15 @@ static int fc_rport_logoff(struct fc_rport_priv *rdata)
FC_RPORT_DBG(rdata, "Port in Delete state, not removing\n");
goto out;
}
/*
* FC-LS states:
* To explicitly Logout, the initiating Nx_Port shall terminate
* other open Sequences that it initiated with the destination
* Nx_Port prior to performing Logout.
*/
lport->tt.exch_mgr_reset(lport, 0, port_id);
lport->tt.exch_mgr_reset(lport, port_id, 0);
fc_rport_enter_logo(rdata);
/*
@ -1923,7 +1935,7 @@ static void fc_rport_recv_logo_req(struct fc_lport *lport, struct fc_frame *fp)
FC_RPORT_DBG(rdata, "Received LOGO request while in state %s\n",
fc_rport_state(rdata));
fc_rport_enter_delete(rdata, RPORT_EV_LOGO);
fc_rport_enter_delete(rdata, RPORT_EV_STOP);
mutex_unlock(&rdata->rp_mutex);
kref_put(&rdata->kref, rdata->local_port->tt.rport_destroy);
} else