[ovs-dev] [PATCH] linux: Assume it is local if no API is available.

[Flavio Leitner]

If the 'openvswitch' kernel module is not loaded, the API is not
available and the userspace will keep retrying. This approach is
not ideal for the netdev datapath type.

This patch disables network netns support if the error code returned
indicates that the API is not available.

Reported-by: Eelco Chaudron <echaudro at redhat.com>
Signed-off-by: Flavio Leitner <fbl at redhat.com>
---
 lib/netdev-linux.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/lib/netdev-linux.c b/lib/netdev-linux.c
index d2b79e569..10c1e4386 100644
--- a/lib/netdev-linux.c
+++ b/lib/netdev-linux.c
@@ -586,7 +586,11 @@ netdev_linux_netnsid_update__(struct netdev_linux *netdev)
     int error;
 
     error = dpif_netlink_vport_get(netdev_get_name(&netdev->up), &reply, &buf);
-    if (error) {
+    if (error == ENOENT) {
+        /* Assume it is local if there is no API */
+        netnsid_set_local(&netdev->netnsid);
+        return error;
+    } else if (error) {
         netnsid_unset(&netdev->netnsid);
         return error;
     }
-- 
2.14.3