netlink plugin: Don't fail if `IFLA_STATS' doesn't exist for an interface.

Hopefully this fixes problems on my WRT ;)

diff --git a/src/netlink.c b/src/netlink.c
index 8c883f6..22afdc7 100644 (file)
--- a/src/netlink.c
+++ b/src/netlink.c
@@ -237,10 +237,6 @@ static int link_filter (const struct sockaddr_nl *sa,
     return (-1);
   }
 
-  if (attrs[IFLA_STATS] == NULL)
-    return (-1);
-  stats = RTA_DATA (attrs[IFLA_STATS]);
-
   if (attrs[IFLA_IFNAME] == NULL)
   {
     ERROR ("netlink plugin: link_filter: attrs[IFLA_IFNAME] == NULL");
@@ -273,6 +269,13 @@ static int link_filter (const struct sockaddr_nl *sa,
     iflist[msg->ifi_index] = strdup (dev);
   }
 
+  if (attrs[IFLA_STATS] == NULL)
+  {
+    DEBUG ("netlink plugin: link_filter: No statistics for interface %s.", dev);
+    return (0);
+  }
+  stats = RTA_DATA (attrs[IFLA_STATS]);
+
   if (check_ignorelist (dev, "interface", NULL) == 0)
   {
     submit_two (dev, "if_octets", NULL, stats->rx_bytes, stats->tx_bytes);