tipc: reset bearer if device carrier not ok

If we detect that under lying carrier detects errors and goes down,
we reset the bearer.

Signed-off-by: Parthasarathy Bhuvaragan <parthasarathy.bhuvaragan@ericsson.com>
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/tipc/bearer.c b/net/tipc/bearer.c
index 418f03d..645c160 100644 (file)
--- a/net/tipc/bearer.c
+++ b/net/tipc/bearer.c
@@ -609,16 +609,18 @@ static int tipc_l2_device_event(struct notifier_block *nb, unsigned long evt,
 
        switch (evt) {
        case NETDEV_CHANGE:
-               if (netif_carrier_ok(dev))
+               if (netif_carrier_ok(dev) && netif_oper_up(dev)) {
+                       test_and_set_bit_lock(0, &b->up);
                        break;
-               /* else: fall through */
-       case NETDEV_UP:
-               test_and_set_bit_lock(0, &b->up);
-               break;
+               }
+               /* fall through */
        case NETDEV_GOING_DOWN:
                clear_bit_unlock(0, &b->up);
                tipc_reset_bearer(net, b);
                break;
+       case NETDEV_UP:
+               test_and_set_bit_lock(0, &b->up);
+               break;
        case NETDEV_CHANGEMTU:
                if (tipc_mtu_bad(dev, 0)) {
                        bearer_disable(net, b);