IB/cma: Add debug messages to error flows
Print debug messages to the kernel log to add more
information about RDMA_CM events that indicate an error.
Signed-off-by: Moni Shoua <monis@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
diff --git a/drivers/infiniband/core/cma.c b/drivers/infiniband/core/cma.c
index a14a18c..37e4644 100644
--- a/drivers/infiniband/core/cma.c
+++ b/drivers/infiniband/core/cma.c
@@ -1693,6 +1693,7 @@ static int cma_rep_recv(struct rdma_id_private *id_priv)
return 0;
reject:
+ pr_debug_ratelimited("RDMA CM: CONNECT_ERROR: failed to handle reply. status %d\n", ret);
cma_modify_qp_err(id_priv);
ib_send_cm_rej(id_priv->cm_id.ib, IB_CM_REJ_CONSUMER_DEFINED,
NULL, 0, NULL, 0);
@@ -1764,6 +1765,8 @@ static int cma_ib_handler(struct ib_cm_id *cm_id, struct ib_cm_event *ib_event)
/* ignore event */
goto out;
case IB_CM_REJ_RECEIVED:
+ pr_debug_ratelimited("RDMA CM: REJECTED: %s\n", rdma_reject_msg(&id_priv->id,
+ ib_event->param.rej_rcvd.reason));
cma_modify_qp_err(id_priv);
event.status = ib_event->param.rej_rcvd.reason;
event.event = RDMA_CM_EVENT_REJECTED;
@@ -2289,6 +2292,8 @@ static void cma_query_handler(int status, struct ib_sa_path_rec *path_rec,
work->new_state = RDMA_CM_ADDR_RESOLVED;
work->event.event = RDMA_CM_EVENT_ROUTE_ERROR;
work->event.status = status;
+ pr_debug_ratelimited("RDMA CM: ROUTE_ERROR: failed to query path. status %d\n",
+ status);
}
queue_work(cma_wq, &work->work);
@@ -2724,8 +2729,14 @@ static void addr_handler(int status, struct sockaddr *src_addr,
goto out;
memcpy(cma_src_addr(id_priv), src_addr, rdma_addr_size(src_addr));
- if (!status && !id_priv->cma_dev)
+ if (!status && !id_priv->cma_dev) {
status = cma_acquire_dev(id_priv, NULL);
+ if (status)
+ pr_debug_ratelimited("RDMA CM: ADDR_ERROR: failed to acquire device. status %d\n",
+ status);
+ } else {
+ pr_debug_ratelimited("RDMA CM: ADDR_ERROR: failed to resolve IP. status %d\n", status);
+ }
if (status) {
if (!cma_comp_exch(id_priv, RDMA_CM_ADDR_RESOLVED,
@@ -3311,10 +3322,13 @@ static int cma_sidr_rep_handler(struct ib_cm_id *cm_id,
if (rep->status != IB_SIDR_SUCCESS) {
event.event = RDMA_CM_EVENT_UNREACHABLE;
event.status = ib_event->param.sidr_rep_rcvd.status;
+ pr_debug_ratelimited("RDMA CM: UNREACHABLE: bad SIDR reply. status %d\n",
+ event.status);
break;
}
ret = cma_set_qkey(id_priv, rep->qkey);
if (ret) {
+ pr_debug_ratelimited("RDMA CM: ADDR_ERROR: failed to set qkey. status %d\n", ret);
event.event = RDMA_CM_EVENT_ADDR_ERROR;
event.status = ret;
break;
@@ -3763,10 +3777,17 @@ static int cma_ib_mc_handler(int status, struct ib_sa_multicast *multicast)
if (!status)
status = cma_set_qkey(id_priv, be32_to_cpu(multicast->rec.qkey));
+ else
+ pr_debug_ratelimited("RDMA CM: MULTICAST_ERROR: failed to join multicast. status %d\n",
+ status);
mutex_lock(&id_priv->qp_mutex);
- if (!status && id_priv->id.qp)
+ if (!status && id_priv->id.qp) {
status = ib_attach_mcast(id_priv->id.qp, &multicast->rec.mgid,
be16_to_cpu(multicast->rec.mlid));
+ if (!status)
+ pr_debug_ratelimited("RDMA CM: MULTICAST_ERROR: failed to attach QP. status %d\n",
+ status);
+ }
mutex_unlock(&id_priv->qp_mutex);
memset(&event, 0, sizeof event);