UCT/CUDA: Restore IMEX channels path macro

Author: shachar hasson

src/uct/cuda/cuda_ipc/cuda_ipc_iface.c

@@ -27,6 +27,9 @@
 #include <pthread.h>
 #include <unistd.h>
 
+#define UCT_CUDA_IPC_IMEX_CHANNELS_PATH \
+    "/dev/nvidia-caps-imex-channels"
+
 typedef enum {
     UCT_CUDA_IPC_DEVICE_ADDR_FLAG_MNNVL  = UCS_BIT(0),
     UCT_CUDA_IPC_DEVICE_ADDR_FLAG_FABRIC = UCS_BIT(1)
@@ -100,7 +103,7 @@ uct_cuda_ipc_iface_check_imex_channel_cb(const struct dirent *entry, void *arg)
     }
 
     ucs_snprintf_safe(path, sizeof(path), "%s/%s",
-                      "/dev/nvidia-caps-imex-channels", entry->d_name);
+                      UCT_CUDA_IPC_IMEX_CHANNELS_PATH, entry->d_name);
     if (access(path, R_OK | W_OK) == 0) {
         *found = 1;
     }
@@ -123,7 +126,7 @@ static int uct_cuda_ipc_iface_fabric_supported(void)
         return 0;
     }
 
-    if (ucs_sys_readdir("/dev/nvidia-caps-imex-channels",
+    if (ucs_sys_readdir(UCT_CUDA_IPC_IMEX_CHANNELS_PATH,
                         uct_cuda_ipc_iface_check_imex_channel_cb,
                         &fabric_supported) != UCS_OK) {
         return 0;