The directory /var/tmp may not be writable in a container's
read-only mode. To address this issue, use the DPDK runtime
directory as an alternative when /var/tmp is not writable.
Cc: bi...@nvidia.com
Cc: dsosnow...@nvidia.com
Cc: step...@networkplumber.org
Cc: julien.meun...@nokia.com
Signed-off-by: Yang Ming <ming.1.y...@nokia-sbell.com>
---
drivers/net/mlx5/linux/mlx5_socket.c | 23 ++++++++++++++++++-----
1 file changed, 18 insertions(+), 5 deletions(-)
diff --git a/drivers/net/mlx5/linux/mlx5_socket.c
b/drivers/net/mlx5/linux/mlx5_socket.c
index 6ce0e59643..270a105f1d 100644
--- a/drivers/net/mlx5/linux/mlx5_socket.c
+++ b/drivers/net/mlx5/linux/mlx5_socket.c
@@ -20,7 +20,8 @@
/* PMD socket service for tools. */
-#define MLX5_SOCKET_PATH "/var/tmp/dpdk_net_mlx5_%d"
+#define MLX5_SOCKET_DPATH "/var/tmp"
+#define MLX5_SOCKET_FNAME "dpdk_net_mlx5"
#define MLX5_ALL_PORT_IDS 0xffff
int server_socket = -1; /* Unix socket for primary process. */
@@ -177,8 +178,13 @@ mlx5_pmd_socket_init(void)
ret = fcntl(server_socket, F_SETFL, flags | O_NONBLOCK);
if (ret < 0)
goto close;
- snprintf(sun.sun_path, sizeof(sun.sun_path), MLX5_SOCKET_PATH,
- getpid());
+
+ if (access(MLX5_SOCKET_DPATH, W_OK) == 0)
+ snprintf(sun.sun_path, sizeof(sun.sun_path), "%s/%s_%d",
+ MLX5_SOCKET_DPATH, MLX5_SOCKET_FNAME, getpid());
+ else
+ snprintf(sun.sun_path, sizeof(sun.sun_path), "%s/%s_%d",
+ rte_eal_get_runtime_dir(), MLX5_SOCKET_FNAME,
getpid());
remove(sun.sun_path);
ret = bind(server_socket, (const struct sockaddr *)&sun, sizeof(sun));
if (ret < 0) {
@@ -223,6 +229,13 @@ mlx5_pmd_socket_uninit(void)
mlx5_pmd_socket_handle, NULL);
claim_zero(close(server_socket));
server_socket = -1;
- MKSTR(path, MLX5_SOCKET_PATH, getpid());
- claim_zero(remove(path));
+ if (access(MLX5_SOCKET_DPATH, W_OK) == 0) {
+ MKSTR(path, "%s/%s_%d", MLX5_SOCKET_DPATH, MLX5_SOCKET_FNAME,
+ getpid());
+ claim_zero(remove(path));
+ } else {
+ MKSTR(path2, "%s/%s_%d", rte_eal_get_runtime_dir(),
MLX5_SOCKET_FNAME,
+ getpid());
+ claim_zero(remove(path2));
+ }
}
--
2.34.1
