]> pilppa.com Git - linux-2.6-omap-h63xx.git/commit
virtio_net: Fix MAX_PACKET_LEN to support 802.1Q VLANs
authorAlex Williamson <alex.williamson@hp.com>
Mon, 26 Jan 2009 02:06:26 +0000 (18:06 -0800)
committerDavid S. Miller <davem@davemloft.net>
Mon, 26 Jan 2009 02:06:26 +0000 (18:06 -0800)
commite918085aaff34086e265f825dd469926b1aec4a4
treecdd8c27d63026efb387ce585dd738b299f9f3479
parent801599b0cd4c026a18fb9fce436eae4459f799a6
virtio_net: Fix MAX_PACKET_LEN to support 802.1Q VLANs

802.1Q expanded the maximum ethernet frame size by 4 bytes for the
VLAN tag.  We're not taking this into account in virtio_net, which
means the buffers we provide to the backend in the virtqueue RX ring
aren't big enough to hold a full MTU VLAN packet.  For QEMU/KVM,
this results in the backend exiting with a packet truncation error.

Signed-off-by: Alex Williamson <alex.williamson@hp.com>
Acked-by: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/virtio_net.c