UCP/CORE: Add rc_gda transport to alias list of ib

src/ucp/core/ucp_context.c

@@ -713,7 +713,7 @@ static ucp_tl_alias_t ucp_tl_aliases[] = {
   { "shm",   { "posix", "sysv", "xpmem", "knem", "cma", NULL } },
   { "ib",    { "rc_verbs", "ud_verbs", "rc_mlx5", "ud_mlx5", "dc_mlx5",
                "gga_mlx5", UCP_TL_AUX("ud_mlx5"), UCP_TL_AUX("ud_verbs"),
-               "srd", NULL } },
+               "srd", "rc_gda", NULL } },
   { "ud_v",  { "ud_verbs", NULL } },
   { "ud_x",  { "ud_mlx5", NULL } },
   { "ud",    { "ud_mlx5", "ud_verbs", NULL } },

src/ucp/core/ucp_context.h

@@ -286,7 +286,7 @@ typedef struct ucp_tl_resource_desc {
  */
 typedef struct ucp_tl_alias {
     const char                    *alias;   /* Alias name */
-    const char*                   tls[10];   /* Transports which are selected by the alias */
+    const char*                   tls[11];  /* Transports which are selected by the alias */
 } ucp_tl_alias_t;
 
 

src/uct/ib/mlx5/gdaki/gdaki.c

@@ -1,5 +1,5 @@
 /**
- * Copyright (c) NVIDIA CORPORATION & AFFILIATES, 2025. ALL RIGHTS RESERVED.
+ * Copyright (c) NVIDIA CORPORATION & AFFILIATES, 2025-2026. ALL RIGHTS RESERVED.
  *
  * See file LICENSE for terms.
  */
@@ -10,6 +10,7 @@
 
 #include "gdaki.h"
 
+#include <ucs/sys/sock.h>
 #include <ucs/time/time.h>
 #include <ucs/datastruct/string_buffer.h>
 #include <ucs/algorithm/qsort_r.h>
@@ -142,6 +143,7 @@ static int uct_gdaki_check_umem_dmabuf(const uct_ib_md_t *md)
 
     mlx5dv_devx_umem_dereg(umem);
 out_free:
+    ucs_close_fd(&dmabuf.fd);
     cuMemFree(buff);
 out_ctx_pop:
     UCT_CUDADRV_FUNC_LOG_WARN(cuCtxPopCurrent(NULL));
@@ -201,8 +203,12 @@ static struct mlx5dv_devx_umem *
 uct_rc_gdaki_umem_reg(const uct_ib_md_t *md, struct ibv_context *ibv_context,
                       void *address, size_t length, uint64_t pgsz_bitmap)
 {
+    uct_cuda_copy_md_dmabuf_t dmabuf   = {
+        .fd     = UCT_DMABUF_FD_INVALID,
+        .offset = 0
+    };
     struct mlx5dv_devx_umem_in umem_in = {};
-    uct_cuda_copy_md_dmabuf_t dmabuf UCS_V_UNUSED;
+    struct mlx5dv_devx_umem *umem;
 
     umem_in.addr        = address;
     umem_in.size        = length;
@@ -216,7 +222,9 @@ uct_rc_gdaki_umem_reg(const uct_ib_md_t *md, struct ibv_context *ibv_context,
     }
 #endif
 
-    return mlx5dv_devx_umem_reg_ex(ibv_context, &umem_in);
+    umem = mlx5dv_devx_umem_reg_ex(ibv_context, &umem_in);
+    ucs_close_fd(&dmabuf.fd);
+    return umem;
 }
 
 static UCS_CLASS_INIT_FUNC(uct_rc_gdaki_ep_t, const uct_ep_params_t *params)
@@ -712,6 +720,7 @@ static ucs_status_t uct_rc_gdaki_reg_mr(const uct_ib_md_t *md, void *address,
 {
     uct_md_mem_reg_params_t params;
     uct_cuda_copy_md_dmabuf_t dmabuf;
+    ucs_status_t status;
 
     params.field_mask    = UCT_MD_MEM_REG_FIELD_FLAGS |
                            UCT_MD_MEM_REG_FIELD_DMABUF_FD |
@@ -721,8 +730,10 @@ static ucs_status_t uct_rc_gdaki_reg_mr(const uct_ib_md_t *md, void *address,
     params.dmabuf_fd     = dmabuf.fd;
     params.dmabuf_offset = dmabuf.offset;
 
-    return uct_ib_reg_mr(md, address, length, &params, UCT_IB_MEM_ACCESS_FLAGS,
-                         NULL, mr_p);
+    status = uct_ib_reg_mr(md, address, length, &params,
+                           UCT_IB_MEM_ACCESS_FLAGS, NULL, mr_p);
+    ucs_close_fd(&dmabuf.fd);
+    return status;
 }
 
 static UCS_CLASS_INIT_FUNC(uct_rc_gdaki_iface_t, uct_md_h tl_md,

test/gtest/ucp/test_ucp_wireup.cc

@@ -1787,11 +1787,11 @@ class test_ucp_address_v2 : public test_ucp_wireup {
         UCS_STATIC_BITMAP_FOR_EACH_BIT(rsc_index, &context->tl_bitmap) {
             auto wiface = ucp_worker_iface(worker, rsc_index);
 
-            /* Compare resources by device and transport */
-            if ((context->tl_rscs[rsc_index].tl_name_csum ==
+            /* Compare resources by md_index, transport name, and device */
+            if ((context->tl_rscs[rsc_index].md_index == ae->md_index) &&
+                (context->tl_rscs[rsc_index].tl_name_csum ==
                  ae->tl_name_csum) &&
                 uct_iface_is_reachable_v2(wiface->iface, &params)) {
-                EXPECT_EQ(ae->md_index, context->tl_rscs[rsc_index].md_index);
                 return &wiface->attr;
             }
         }