diff options
| author | Alex Williamson <alex.williamson@hp.com> | 2009-02-04 09:02:50 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-02-04 16:35:13 -0800 |
| commit | 0bde95690d65653e420d04856c5d5783155c747c (patch) | |
| tree | 480f2e23d6d5cf39af1bc86e209dd2cc68695301 /include/linux | |
| parent | f565a7c259d71cc186753653d978c646d2354b36 (diff) | |
virtio_net: Add support for VLAN filtering in the hypervisor
VLAN filtering allows the hypervisor to drop packets from VLANs
that we're not a part of, further reducing the number of extraneous
packets recieved. This makes use of the VLAN virtqueue command class.
The CTRL_VLAN feature bit tells us whether the backend supports VLAN
filtering.
Signed-off-by: Alex Williamson <alex.williamson@hp.com>
Acked-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/virtio_net.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/include/linux/virtio_net.h b/include/linux/virtio_net.h index ba82b653cac..242348bb376 100644 --- a/include/linux/virtio_net.h +++ b/include/linux/virtio_net.h @@ -25,6 +25,7 @@ #define VIRTIO_NET_F_STATUS 16 /* virtio_net_config.status available */ #define VIRTIO_NET_F_CTRL_VQ 17 /* Control channel available */ #define VIRTIO_NET_F_CTRL_RX 18 /* Control channel RX mode support */ +#define VIRTIO_NET_F_CTRL_VLAN 19 /* Control channel VLAN filtering */ #define VIRTIO_NET_S_LINK_UP 1 /* Link is up */ @@ -111,4 +112,17 @@ struct virtio_net_ctrl_mac { #define VIRTIO_NET_CTRL_MAC 1 #define VIRTIO_NET_CTRL_MAC_TABLE_SET 0 +/* + * Control VLAN filtering + * + * The VLAN filter table is controlled via a simple ADD/DEL interface. + * VLAN IDs not added may be filterd by the hypervisor. Del is the + * opposite of add. Both commands expect an out entry containing a 2 + * byte VLAN ID. VLAN filterting is available with the + * VIRTIO_NET_F_CTRL_VLAN feature bit. + */ +#define VIRTIO_NET_CTRL_VLAN 2 + #define VIRTIO_NET_CTRL_VLAN_ADD 0 + #define VIRTIO_NET_CTRL_VLAN_DEL 1 + #endif /* _LINUX_VIRTIO_NET_H */ |