On 2017/3/13 14:32, Leon Romanovsky wrote:
On Mon, Mar 13, 2017 at 01:43:45AM -0400, Zhu Yanjun wrote:
When rdma_accept fails, rdma_reject is called in it. As such, it is
not necessary to execute rdma_reject again.
It is not always correct, according to the code, rdma_accept can fail
and will return EINVAL and skip calling to rdma_reject.
Sure. When -EINVAL is returned, By this function cma_comp(id_priv,
RDMA_CM_CONNECT), the connection
is lost. As such, it does not matter whether sending rdma_reject or not.
Zhu Yanjun
3725 int rdma_accept(struct rdma_cm_id *id, struct rdma_conn_param *conn_param)
3726 {
3727 struct rdma_id_private *id_priv;
3728 int ret;
3729
3730 id_priv = container_of(id, struct rdma_id_private, id);
3731
3732 id_priv->owner = task_pid_nr(current);
3733
3734 if (!cma_comp(id_priv, RDMA_CM_CONNECT))
3735 return -EINVAL;
3736
Cc: Joe Jin <joe.jin@xxxxxxxxxx>
Cc: Junxiao Bi <junxiao.bi@xxxxxxxxxx>
Acked-by: Santosh Shilimkar <santosh.shilimkar@xxxxxxxxxx>
Signed-off-by: Zhu Yanjun <yanjun.zhu@xxxxxxxxxx>
---
net/rds/ib_cm.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/net/rds/ib_cm.c b/net/rds/ib_cm.c
index ce3775a..4b9405c 100644
--- a/net/rds/ib_cm.c
+++ b/net/rds/ib_cm.c
@@ -677,9 +677,8 @@ int rds_ib_cm_handle_connect(struct rdma_cm_id *cm_id,
event->param.conn.initiator_depth);
/* rdma_accept() calls rdma_reject() internally if it fails */
- err = rdma_accept(cm_id, &conn_param);
- if (err)
- rds_ib_conn_error(conn, "rdma_accept failed (%d)\n", err);
+ if (rdma_accept(cm_id, &conn_param))
+ rds_ib_conn_error(conn, "rdma_accept failed\n");
out:
if (conn)
--
2.7.4
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