/*
* iser_conn_destroy()
* Tear down an initiator or target connection.
*/
static void
iser_conn_destroy(idm_conn_t *ic)
{
iser_conn_t *iser_conn;
iser_conn = (iser_conn_t *)ic->ic_transport_private;
iser_internal_conn_destroy(iser_conn);
ic->ic_transport_private = NULL;
}
/*
* Handle EVENT FAILURE
*/
static ibt_cm_status_t
iser_handle_cm_event_failure(ibt_cm_event_t *evp)
{
iser_chan_t *chan;
chan = (iser_chan_t *)ibt_get_chan_private(evp->cm_channel);
ISER_LOG(CE_NOTE, "iser_handle_cm_event_failure: chan (0x%p): "
"code: %d msg: %d reason: %d", (void *)chan,
evp->cm_event.failed.cf_code, evp->cm_event.failed.cf_msg,
evp->cm_event.failed.cf_reason);
if ((evp->cm_channel == NULL) || (chan == NULL)) {
/* channel not established yet */
return (IBT_CM_ACCEPT);
}
if ((evp->cm_event.failed.cf_code != IBT_CM_FAILURE_STALE) &&
(evp->cm_event.failed.cf_msg == IBT_CM_FAILURE_REQ)) {
/*
* This end is active, just ignore, ibt_open_rc_channel()
* caller will take care of cleanup.
*/
return (IBT_CM_ACCEPT);
}
/* handle depending upon our connection state */
mutex_enter(&chan->ic_conn->ic_lock);
switch (chan->ic_conn->ic_stage) {
case ISER_CONN_STAGE_UNDEFINED:
case ISER_CONN_STAGE_CLOSED:
/* do nothing, just drop the lock */
mutex_exit(&chan->ic_conn->ic_lock);
break;
case ISER_CONN_STAGE_ALLOCATED:
/*
* We blew up or were offlined during connection
* establishment. Teardown the iSER conn and chan
* handles.
*/
mutex_exit(&chan->ic_conn->ic_lock);
iser_internal_conn_destroy(chan->ic_conn);
break;
case ISER_CONN_STAGE_IC_DISCONNECTED:
case ISER_CONN_STAGE_IC_FREED:
case ISER_CONN_STAGE_CLOSING:
/* update to CLOSED, then drop the lock */
chan->ic_conn->ic_stage = ISER_CONN_STAGE_CLOSED;
mutex_exit(&chan->ic_conn->ic_lock);
break;
case ISER_CONN_STAGE_IC_CONNECTED:
case ISER_CONN_STAGE_HELLO_SENT:
case ISER_CONN_STAGE_HELLO_SENT_FAIL:
case ISER_CONN_STAGE_HELLO_WAIT:
case ISER_CONN_STAGE_HELLO_RCV:
case ISER_CONN_STAGE_HELLO_RCV_FAIL:
case ISER_CONN_STAGE_HELLOREPLY_SENT:
case ISER_CONN_STAGE_HELLOREPLY_SENT_FAIL:
case ISER_CONN_STAGE_HELLOREPLY_RCV:
case ISER_CONN_STAGE_HELLOREPLY_RCV_FAIL:
case ISER_CONN_STAGE_LOGGED_IN:
/* fail the transport and move the conn to CLOSING */
idm_conn_event(chan->ic_conn->ic_idmc, CE_TRANSPORT_FAIL,
IDM_STATUS_FAIL);
chan->ic_conn->ic_stage = ISER_CONN_STAGE_CLOSING;
mutex_exit(&chan->ic_conn->ic_lock);
break;
default:
mutex_exit(&chan->ic_conn->ic_lock);
ASSERT(0);
}
/* accept the event */
return (IBT_CM_ACCEPT);
}
static ibt_cm_status_t
iser_handle_cm_conn_closed(ibt_cm_event_t *evp)
{
iser_chan_t *chan;
chan = (iser_chan_t *)ibt_get_chan_private(evp->cm_channel);
ISER_LOG(CE_NOTE, "iser_handle_cm_conn_closed: chan (0x%p) "
"reason (0x%x)", (void *)chan, evp->cm_event.closed);
switch (evp->cm_event.closed) {
case IBT_CM_CLOSED_DREP_RCVD: /* we requested a disconnect */
case IBT_CM_CLOSED_ALREADY: /* duplicate close */
/* ignore these */
return (IBT_CM_ACCEPT);
case IBT_CM_CLOSED_DREQ_RCVD: /* request to close the channel */
case IBT_CM_CLOSED_REJ_RCVD: /* reject after conn establishment */
case IBT_CM_CLOSED_DREQ_TIMEOUT: /* our close request timed out */
case IBT_CM_CLOSED_DUP: /* duplicate close request */
case IBT_CM_CLOSED_ABORT: /* aborted connection establishment */
case IBT_CM_CLOSED_STALE: /* stale / unref connection */
/* handle these depending upon our connection state */
mutex_enter(&chan->ic_conn->ic_lock);
switch (chan->ic_conn->ic_stage) {
case ISER_CONN_STAGE_UNDEFINED:
case ISER_CONN_STAGE_CLOSED:
/* do nothing, just drop the lock */
mutex_exit(&chan->ic_conn->ic_lock);
break;
case ISER_CONN_STAGE_ALLOCATED:
/*
* We blew up or were offlined during connection
* establishment. Teardown the iSER conn and chan
* handles.
*/
mutex_exit(&chan->ic_conn->ic_lock);
iser_internal_conn_destroy(chan->ic_conn);
break;
case ISER_CONN_STAGE_IC_DISCONNECTED:
case ISER_CONN_STAGE_IC_FREED:
case ISER_CONN_STAGE_CLOSING:
/* we're down, set CLOSED */
chan->ic_conn->ic_stage = ISER_CONN_STAGE_CLOSED;
mutex_exit(&chan->ic_conn->ic_lock);
break;
case ISER_CONN_STAGE_IC_CONNECTED:
case ISER_CONN_STAGE_HELLO_SENT:
case ISER_CONN_STAGE_HELLO_SENT_FAIL:
case ISER_CONN_STAGE_HELLO_WAIT:
case ISER_CONN_STAGE_HELLO_RCV:
case ISER_CONN_STAGE_HELLO_RCV_FAIL:
case ISER_CONN_STAGE_HELLOREPLY_SENT:
case ISER_CONN_STAGE_HELLOREPLY_SENT_FAIL:
case ISER_CONN_STAGE_HELLOREPLY_RCV:
case ISER_CONN_STAGE_HELLOREPLY_RCV_FAIL:
case ISER_CONN_STAGE_LOGGED_IN:
/* for all other stages, fail the transport */
idm_conn_event(chan->ic_conn->ic_idmc,
CE_TRANSPORT_FAIL, IDM_STATUS_FAIL);
chan->ic_conn->ic_stage = ISER_CONN_STAGE_CLOSING;
mutex_exit(&chan->ic_conn->ic_lock);
break;
default:
mutex_exit(&chan->ic_conn->ic_lock);
ASSERT(0);
}
/* accept the event */
return (IBT_CM_ACCEPT);
default:
/* unknown event */
ISER_LOG(CE_NOTE, "iser_handle_cm_conn_closed: unknown closed "
"event: (0x%x)", evp->cm_event.closed);
return (IBT_CM_REJECT);
}
}
