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>

diff --git a/drivers/infiniband/core/cma.c b/drivers/infiniband/core/cma.c
index 0751697..5a80e74 100644 (file)
--- 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 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))
 
        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;
 
        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;
        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 */
        ret = conn_id->id.event_handler(&conn_id->id, &event);
        if (ret) {
                /* User wants to destroy the CM ID */