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iser-target: Handle DEVICE_REMOVAL event on network portal listener correctly

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In this case the cm_id->context is the isert_np, and the cm_id->qp
is NULL, so use that to distinct the cases.

Since we don't expect any other events on this cm_id we can
just return -1 for explicit termination of the cm_id by the
cma layer.

Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Cc: <stable@vger.kernel.org> # 3.10+
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
This commit is contained in:
Sagi Grimberg 2014-10-28 13:45:03 -07:00 committed by Nicholas Bellinger
parent f57915cfa5
commit 3b726ae2de
1 changed files with 19 additions and 10 deletions
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29
drivers/infiniband/ulp/isert/ib_isert.c
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@ -806,14 +806,25 @@ wake_up:
complete(&isert_conn->conn_wait);
}
static void
static int
isert_disconnected_handler(struct rdma_cm_id *cma_id, bool disconnect)
{
struct isert_conn *isert_conn = (struct isert_conn *)cma_id->context;
struct isert_conn *isert_conn;
if (!cma_id->qp) {
struct isert_np *isert_np = cma_id->context;
isert_np->np_cm_id = NULL;
return -1;
}
isert_conn = (struct isert_conn *)cma_id->context;
isert_conn->disconnect = disconnect;
INIT_WORK(&isert_conn->conn_logout_work, isert_disconnect_work);
schedule_work(&isert_conn->conn_logout_work);
return 0;
}
static int
@ -828,6 +839,9 @@ isert_cma_handler(struct rdma_cm_id *cma_id, struct rdma_cm_event *event)
switch (event->event) {
case RDMA_CM_EVENT_CONNECT_REQUEST:
ret = isert_connect_request(cma_id, event);
if (ret)
pr_err("isert_cma_handler failed RDMA_CM_EVENT: 0x%08x %d\n",
event->event, ret);
break;
case RDMA_CM_EVENT_ESTABLISHED:
isert_connected_handler(cma_id);
@ -837,7 +851,7 @@ isert_cma_handler(struct rdma_cm_id *cma_id, struct rdma_cm_event *event)
case RDMA_CM_EVENT_DEVICE_REMOVAL: /* FALLTHRU */
disconnect = true;
case RDMA_CM_EVENT_TIMEWAIT_EXIT: /* FALLTHRU */
isert_disconnected_handler(cma_id, disconnect);
ret = isert_disconnected_handler(cma_id, disconnect);
break;
case RDMA_CM_EVENT_CONNECT_ERROR:
default:
@ -845,12 +859,6 @@ isert_cma_handler(struct rdma_cm_id *cma_id, struct rdma_cm_event *event)
break;
}
if (ret != 0) {
pr_err("isert_cma_handler failed RDMA_CM_EVENT: 0x%08x %d\n",
event->event, ret);
dump_stack();
}
return ret;
}
@ -3193,7 +3201,8 @@ isert_free_np(struct iscsi_np *np)
{
struct isert_np *isert_np = (struct isert_np *)np->np_context;
rdma_destroy_id(isert_np->np_cm_id);
if (isert_np->np_cm_id)
rdma_destroy_id(isert_np->np_cm_id);
np->np_context = NULL;
kfree(isert_np);