vlan: allow TSO setting on vlan interfaces
authorEric Dumazet <eric.dumazet@gmail.com>
Fri, 9 Jul 2010 06:12:21 +0000 (23:12 -0700)
committerDavid S. Miller <davem@davemloft.net>
Fri, 9 Jul 2010 06:12:21 +0000 (23:12 -0700)
commita204b48ed4dc31acf61090e530430ce3272b6aab
tree1c7615f3483720a79b83f03bc4d14f2dad622744
parentdd4ba83dc1becbb3bb383851381c10c372e47247
vlan: allow TSO setting on vlan interfaces

When we need to shape traffic using low speeds, we need to
disable tso on network interface :

ethtool -K eth0.2240 tso off

It seems vlan interfaces miss the set_tso() ethtool method.

Before enabling TSO, we must check real device supports
TSO for VLAN-tagged packets and enables TSO.

Note that a TSO change on real device propagates TSO setting
on all vlans, even if admin selected a different TSO setting.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/8021q/vlan_dev.c