RDMA/iwcm: Set initiator depth and responder resources to device max values

Set the initiator depth and responder resources to the device max
values for new connect request events in the iWARP connection manager.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

1 files changed, 10 insertions, 0 deletions

diff --git a/drivers/infiniband/core/cma.c b/drivers/infiniband/core/cma.c
index 0751697ef984..5a80e74731c8 100644
--- a/drivers/infiniband/core/cma.c
+++ b/drivers/infiniband/core/cma.c
@@ -1262,6 +1262,7 @@ static int iw_conn_req_handler(struct iw_cm_id *cm_id,
         struct net_device *dev = NULL;
         struct rdma_cm_event event;
         int ret;
+        struct ib_device_attr attr;
 
         listen_id = cm_id->context;
         if (cma_disable_remove(listen_id, CMA_LISTEN))
@@ -1311,10 +1312,19 @@ static int iw_conn_req_handler(struct iw_cm_id *cm_id,
         sin = (struct sockaddr_in *) &new_cm_id->route.addr.dst_addr;
         *sin = iw_event->remote_addr;
 
+        ret = ib_query_device(conn_id->id.device, &attr);
+        if (ret) {
+                cma_enable_remove(conn_id);
+                rdma_destroy_id(new_cm_id);
+                goto out;
+        }
+
         memset(&event, 0, sizeof event);
         event.event = RDMA_CM_EVENT_CONNECT_REQUEST;
         event.param.conn.private_data = iw_event->private_data;
         event.param.conn.private_data_len = iw_event->private_data_len;
+        event.param.conn.initiator_depth = attr.max_qp_init_rd_atom;
+        event.param.conn.responder_resources = attr.max_qp_rd_atom;
         ret = conn_id->id.event_handler(&conn_id->id, &event);
         if (ret) {
                 /* User wants to destroy the CM ID */