RDMA/ucma: Copy iWARP route information on queries

For iWARP rdma_cm ids, the "route" information is the L2 src and
next hop addresses.

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

diff --git a/drivers/infiniband/core/ucma.c b/drivers/infiniband/core/ucma.c
index ca12acf..ec1e9da 100644 (file)
--- a/drivers/infiniband/core/ucma.c
+++ b/drivers/infiniband/core/ucma.c
@@ -636,6 +636,16 @@ static void ucma_copy_iboe_route(struct rdma_ucm_query_route_resp *resp,
        }
 }
 
+static void ucma_copy_iw_route(struct rdma_ucm_query_route_resp *resp,
+                              struct rdma_route *route)
+{
+       struct rdma_dev_addr *dev_addr;
+
+       dev_addr = &route->addr.dev_addr;
+       rdma_addr_get_dgid(dev_addr, (union ib_gid *) &resp->ib_route[0].dgid);
+       rdma_addr_get_sgid(dev_addr, (union ib_gid *) &resp->ib_route[0].sgid);
+}
+
 static ssize_t ucma_query_route(struct ucma_file *file,
                                const char __user *inbuf,
                                int in_len, int out_len)
@@ -670,8 +680,10 @@ static ssize_t ucma_query_route(struct ucma_file *file,
 
        resp.node_guid = (__force __u64) ctx->cm_id->device->node_guid;
        resp.port_num = ctx->cm_id->port_num;
-       if (rdma_node_get_transport(ctx->cm_id->device->node_type) == RDMA_TRANSPORT_IB) {
-               switch (rdma_port_get_link_layer(ctx->cm_id->device, ctx->cm_id->port_num)) {
+       switch (rdma_node_get_transport(ctx->cm_id->device->node_type)) {
+       case RDMA_TRANSPORT_IB:
+               switch (rdma_port_get_link_layer(ctx->cm_id->device,
+                       ctx->cm_id->port_num)) {
                case IB_LINK_LAYER_INFINIBAND:
                        ucma_copy_ib_route(&resp, &ctx->cm_id->route);
                        break;
@@ -681,6 +693,12 @@ static ssize_t ucma_query_route(struct ucma_file *file,
                default:
                        break;
                }
+               break;
+       case RDMA_TRANSPORT_IWARP:
+               ucma_copy_iw_route(&resp, &ctx->cm_id->route);
+               break;
+       default:
+               break;
        }
 
 out: