diff options
| author | Fernando Luis Vazquez Cao <fernando@oss.ntt.co.jp> | 2014-02-18 21:20:09 +0900 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-02-20 02:15:38 -0500 |
| commit | 6671b2240c54585d4afb5286a29f1569fe5e40a8 (patch) | |
| tree | 79c4280715571a77b08b5946dbac2a2ad0fe1c4a /net/ipv4/ip_tunnel.c | |
| parent | 8d0d21f4053c07714802cbe8b1fe26913ec296cc (diff) | |
tun: remove bogus hardware vlan acceleration flags from vlan_features
Even though only the outer vlan tag can be HW accelerated in the transmission
path, in the TUN/TAP driver vlan_features mirrors hw_features, which happens
to have the NETIF_F_HW_VLAN_?TAG_TX flags set. Because of this, during packet
tranmisssion through a stacked vlan device dev_hard_start_xmit, (incorrectly)
assuming that the vlan device supports hardware vlan acceleration, does not
add the vlan header to the skb payload and the inner vlan tags are lost
(vlan_tci contains the outer vlan tag when userspace reads the packet from
the tap device).
Signed-off-by: Fernando Luis Vazquez Cao <fernando@oss.ntt.co.jp>
Signed-off-by: Toshiaki Makita <makita.toshiaki@lab.ntt.co.jp>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/ip_tunnel.c')
0 files changed, 0 insertions, 0 deletions