RDMA/cxgb4: Connect_request_upcall fixes
When processing an MPA Start Request, if the listening endpoint is
DEAD, then abort the connection.
If the IWCM returns an error, then we must abort the connection and
release resources. Also abort_connection() should not post a CLOSE
event, so clean that up too.
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
diff --git a/drivers/infiniband/hw/cxgb4/cm.c b/drivers/infiniband/hw/cxgb4/cm.c
index 773d010..6bfef31 100644
--- a/drivers/infiniband/hw/cxgb4/cm.c
+++ b/drivers/infiniband/hw/cxgb4/cm.c
@@ -968,13 +968,14 @@
return 0;
}
-static void close_complete_upcall(struct c4iw_ep *ep)
+static void close_complete_upcall(struct c4iw_ep *ep, int status)
{
struct iw_cm_event event;
PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
memset(&event, 0, sizeof(event));
event.event = IW_CM_EVENT_CLOSE;
+ event.status = status;
if (ep->com.cm_id) {
PDBG("close complete delivered ep %p cm_id %p tid %u\n",
ep, ep->com.cm_id, ep->hwtid);
@@ -988,7 +989,6 @@
static int abort_connection(struct c4iw_ep *ep, struct sk_buff *skb, gfp_t gfp)
{
PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
- close_complete_upcall(ep);
state_set(&ep->com, ABORTING);
set_bit(ABORT_CONN, &ep->com.history);
return send_abort(ep, skb, gfp);
@@ -1067,9 +1067,10 @@
}
}
-static void connect_request_upcall(struct c4iw_ep *ep)
+static int connect_request_upcall(struct c4iw_ep *ep)
{
struct iw_cm_event event;
+ int ret;
PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
memset(&event, 0, sizeof(event));
@@ -1094,15 +1095,14 @@
event.private_data_len = ep->plen;
event.private_data = ep->mpa_pkt + sizeof(struct mpa_message);
}
- if (state_read(&ep->parent_ep->com) != DEAD) {
- c4iw_get_ep(&ep->com);
- ep->parent_ep->com.cm_id->event_handler(
- ep->parent_ep->com.cm_id,
- &event);
- }
+ c4iw_get_ep(&ep->com);
+ ret = ep->parent_ep->com.cm_id->event_handler(ep->parent_ep->com.cm_id,
+ &event);
+ if (ret)
+ c4iw_put_ep(&ep->com);
set_bit(CONNREQ_UPCALL, &ep->com.history);
c4iw_put_ep(&ep->parent_ep->com);
- ep->parent_ep = NULL;
+ return ret;
}
static void established_upcall(struct c4iw_ep *ep)
@@ -1401,7 +1401,6 @@
return;
PDBG("%s enter (%s line %u)\n", __func__, __FILE__, __LINE__);
- stop_ep_timer(ep);
mpa = (struct mpa_message *) ep->mpa_pkt;
/*
@@ -1494,9 +1493,17 @@
ep->mpa_attr.p2p_type);
state_set(&ep->com, MPA_REQ_RCVD);
+ stop_ep_timer(ep);
/* drive upcall */
- connect_request_upcall(ep);
+ mutex_lock(&ep->parent_ep->com.mutex);
+ if (ep->parent_ep->com.state != DEAD) {
+ if (connect_request_upcall(ep))
+ abort_connection(ep, skb, GFP_KERNEL);
+ } else {
+ abort_connection(ep, skb, GFP_KERNEL);
+ }
+ mutex_unlock(&ep->parent_ep->com.mutex);
return;
}
@@ -2247,7 +2254,7 @@
c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp,
C4IW_QP_ATTR_NEXT_STATE, &attrs, 1);
}
- close_complete_upcall(ep);
+ close_complete_upcall(ep, 0);
__state_set(&ep->com, DEAD);
release = 1;
disconnect = 0;
@@ -2426,7 +2433,7 @@
C4IW_QP_ATTR_NEXT_STATE,
&attrs, 1);
}
- close_complete_upcall(ep);
+ close_complete_upcall(ep, 0);
__state_set(&ep->com, DEAD);
release = 1;
break;
@@ -2981,7 +2988,7 @@
rdev = &ep->com.dev->rdev;
if (c4iw_fatal_error(rdev)) {
fatal = 1;
- close_complete_upcall(ep);
+ close_complete_upcall(ep, -EIO);
ep->com.state = DEAD;
}
switch (ep->com.state) {
@@ -3023,7 +3030,7 @@
if (close) {
if (abrupt) {
set_bit(EP_DISC_ABORT, &ep->com.history);
- close_complete_upcall(ep);
+ close_complete_upcall(ep, -ECONNRESET);
ret = send_abort(ep, NULL, gfp);
} else {
set_bit(EP_DISC_CLOSE, &ep->com.history);
@@ -3435,6 +3442,7 @@
&attrs, 1);
}
__state_set(&ep->com, ABORTING);
+ close_complete_upcall(ep, -ETIMEDOUT);
break;
default:
WARN(1, "%s unexpected state ep %p tid %u state %u\n",