diff options
| author | Al Viro <viro@zeniv.linux.org.uk> | 2016-12-16 16:21:05 -0500 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2016-12-16 16:21:05 -0500 |
| commit | 3c55d6bcfe8163ff2b5636b4aabe3caa3f5d95f4 (patch) | |
| tree | 3229c2de6e95352751d1c9e05dcd2925a3212beb /net/tipc/bearer.c | |
| parent | 4da00fd1b948b408f76488c4e506af748be5fce8 (diff) | |
| parent | 29ac8e856cb3694e004037de595dec4ec53d42f2 (diff) | |
Merge remote-tracking branch 'djwong/ocfs2-vfs-reflink-6' into for-linus
Diffstat (limited to 'net/tipc/bearer.c')
| -rw-r--r-- | net/tipc/bearer.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/net/tipc/bearer.c b/net/tipc/bearer.c index 975dbeb60ab0..52d74760fb68 100644 --- a/net/tipc/bearer.c +++ b/net/tipc/bearer.c @@ -421,6 +421,10 @@ int tipc_enable_l2_media(struct net *net, struct tipc_bearer *b, dev = dev_get_by_name(net, driver_name); if (!dev) return -ENODEV; + if (tipc_mtu_bad(dev, 0)) { + dev_put(dev); + return -EINVAL; + } /* Associate TIPC bearer with L2 bearer */ rcu_assign_pointer(b->media_ptr, dev); @@ -610,8 +614,6 @@ static int tipc_l2_device_event(struct notifier_block *nb, unsigned long evt, if (!b) return NOTIFY_DONE; - b->mtu = dev->mtu; - switch (evt) { case NETDEV_CHANGE: if (netif_carrier_ok(dev)) @@ -624,6 +626,11 @@ static int tipc_l2_device_event(struct notifier_block *nb, unsigned long evt, tipc_reset_bearer(net, b); break; case NETDEV_CHANGEMTU: + if (tipc_mtu_bad(dev, 0)) { + bearer_disable(net, b); + break; + } + b->mtu = dev->mtu; tipc_reset_bearer(net, b); break; case NETDEV_CHANGEADDR: |