RDMA/rtrs: RDMA_RXE requires more number of WR

When using rdma_rxe, post_one_recv() returns ENOMEM error due to the full
recv queue.  This patch increase the number of WR for receive queue to
support all devices.

Link: https://lore.kernel.org/r/20210614090337.29557-4-jinpu.wang@ionos.com
Signed-off-by: Md Haris Iqbal <haris.iqbal@cloud.ionos.com>
Signed-off-by: Jack Wang <jinpu.wang@cloud.ionos.com>
Signed-off-by: Gioh Kim <gi-oh.kim@ionos.com>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>

diff --git a/drivers/infiniband/ulp/rtrs/rtrs-clt.c b/drivers/infiniband/ulp/rtrs/rtrs-clt.c
index cd53edddfe1f7714a67a885e4b5ade203cfe85bb..acf0fde410c389ab8d80900510ac638a717edcf6 100644 (file)
--- a/drivers/infiniband/ulp/rtrs/rtrs-clt.c
+++ b/drivers/infiniband/ulp/rtrs/rtrs-clt.c
@@ -1579,10 +1579,11 @@ static int create_con_cq_qp(struct rtrs_clt_con *con)
        lockdep_assert_held(&con->con_mutex);
        if (con->c.cid == 0) {
                /*
-                * One completion for each receive and two for each send
-                * (send request + registration)
+                * Two (request + registration) completion for send
+                * Two for recv if always_invalidate is set on server
+                * or one for recv.
                 * + 2 for drain and heartbeat
-                * in case qp gets into error state
+                * in case qp gets into error state.
                 */
                max_send_wr = SERVICE_CON_QUEUE_DEPTH * 2 + 2;
                max_recv_wr = SERVICE_CON_QUEUE_DEPTH * 2 + 2;

diff --git a/drivers/infiniband/ulp/rtrs/rtrs-srv.c b/drivers/infiniband/ulp/rtrs/rtrs-srv.c
index 04ec3080e9b583124363e637ead135fc4ebf2046..bb73f7762a87c755a52d19aab06fba67b6229034 100644 (file)
--- a/drivers/infiniband/ulp/rtrs/rtrs-srv.c
+++ b/drivers/infiniband/ulp/rtrs/rtrs-srv.c
@@ -1656,7 +1656,7 @@ static int create_con(struct rtrs_srv_sess *sess,
                 * + 2 for drain and heartbeat
                 */
                max_send_wr = SERVICE_CON_QUEUE_DEPTH * 2 + 2;
-               max_recv_wr = SERVICE_CON_QUEUE_DEPTH + 2;
+               max_recv_wr = SERVICE_CON_QUEUE_DEPTH * 2 + 2;
                cq_size = max_send_wr + max_recv_wr;
        } else {
                /*