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| author |   David S. Miller <davem@davemloft.net> | 2016-07-23 19:31:37 -0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-07-24 00:53:32 -0400 |
| commit | de0ba9a0d8909996f9e293d311c2cc459fa77d67 (patch) | |
| tree | 199214afc477824bf431d11d08834ff7555c994b /net/8021q/vlan_dev.c | |
| parent | Merge branch 'macsec-gro' (diff) | |
| parent | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net (diff) | |
| download | linux-dev-de0ba9a0d8909996f9e293d311c2cc459fa77d67.tar.xz linux-dev-de0ba9a0d8909996f9e293d311c2cc459fa77d67.zip | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Just several instances of overlapping changes.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/8021q/vlan_dev.c')
| -rw-r--r-- | net/8021q/vlan_dev.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/net/8021q/vlan_dev.c b/net/8021q/vlan_dev.c index c8f422c90856..fbfacd51aa34 100644 --- a/net/8021q/vlan_dev.c +++ b/net/8021q/vlan_dev.c @@ -146,10 +146,12 @@ static netdev_tx_t vlan_dev_hard_start_xmit(struct sk_buff *skb, static int vlan_dev_change_mtu(struct net_device *dev, int new_mtu) { - /* TODO: gotta make sure the underlying layer can handle it, - * maybe an IFF_VLAN_CAPABLE flag for devices? - */ - if (vlan_dev_priv(dev)->real_dev->mtu < new_mtu) + struct net_device *real_dev = vlan_dev_priv(dev)->real_dev; + unsigned int max_mtu = real_dev->mtu; + + if (netif_reduces_vlan_mtu(real_dev)) + max_mtu -= VLAN_HLEN; + if (max_mtu < new_mtu) return -ERANGE; dev->mtu = new_mtu; |