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>

1 files changed, 20 insertions, 2 deletions

diff --git a/drivers/infiniband/core/ucma.c b/drivers/infiniband/core/ucma.c
index ca12acf38379..ec1e9da1488b 100644
--- 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: