On 04/30/15 18:08, Doug Ledford wrote:
On Thu, 2015-04-30 at 10:58 +0200, Bart Van Assche wrote:
@@ -2367,7 +2368,7 @@ static int srp_cm_handler(struct ib_cm_id *cm_id, struct
ib_cm_event *event)
case IB_CM_DREQ_RECEIVED:
shost_printk(KERN_WARNING, target->scsi_host,
PFX "DREQ received - connection closed\n");
- srp_change_conn_state(target, false);
+ ch->connected = false;
So, in this patch, you modify disconnect to set srp_change_conn_state()
to false for the target, then loop through all the channels sending
cm_dreq's, and on the receiving side, you modify the cm_dreq handler to
set each channel to false. However, once you get to 0 channels open,
shouldn't you then set the target state to false too just to keep things
consistent?
Hello Doug,
What is not visible in this patch but only in the ib_srp.c source code
is that the first received DREQ initiates a reconnect (the queue_work()
call below):
case IB_CM_DREQ_RECEIVED:
shost_printk(KERN_WARNING, target->scsi_host,
PFX "DREQ received - connection closed\n");
ch->connected = false;
if (ib_send_cm_drep(cm_id, NULL, 0))
shost_printk(KERN_ERR, target->scsi_host,
PFX "Sending CM DREP failed\n");
queue_work(system_long_wq, &target->tl_err_work);
break;
That should be sufficient to restore communication after a DREQ has been
received.
Bart.
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