diff options
| author | Alex Williamson <alex.williamson@hp.com> | 2009-02-04 09:02:45 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-02-04 16:35:13 -0800 |
| commit | f565a7c259d71cc186753653d978c646d2354b36 (patch) | |
| tree | 67eac82cc9043d80e77c2627b3de862da1cca439 /include | |
| parent | 2af7698e2dd698d452ab9d63a9ca5956bbe8fc3b (diff) | |
virtio_net: Add a MAC filter table
Make use of the MAC control virtqueue class to support a MAC
filter table. The filter table is managed by the hypervisor.
We consider the table to be available if the CTRL_RX feature
bit is set. We leave it to the hypervisor to manage the table
and enable promiscuous or all-multi mode as necessary depending
on the resources available to it.
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')
| -rw-r--r-- | include/linux/virtio_net.h | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/include/linux/virtio_net.h b/include/linux/virtio_net.h index 63b2461a40f..ba82b653cac 100644 --- a/include/linux/virtio_net.h +++ b/include/linux/virtio_net.h @@ -88,4 +88,27 @@ typedef __u8 virtio_net_ctrl_ack; #define VIRTIO_NET_CTRL_RX_PROMISC 0 #define VIRTIO_NET_CTRL_RX_ALLMULTI 1 +/* + * Control the MAC filter table. + * + * The MAC filter table is managed by the hypervisor, the guest should + * assume the size is infinite. Filtering should be considered + * non-perfect, ie. based on hypervisor resources, the guest may + * received packets from sources not specified in the filter list. + * + * In addition to the class/cmd header, the TABLE_SET command requires + * two out scatterlists. Each contains a 4 byte count of entries followed + * by a concatenated byte stream of the ETH_ALEN MAC addresses. The + * first sg list contains unicast addresses, the second is for multicast. + * This functionality is present if the VIRTIO_NET_F_CTRL_RX feature + * is available. + */ +struct virtio_net_ctrl_mac { + __u32 entries; + __u8 macs[][ETH_ALEN]; +} __attribute__((packed)); + +#define VIRTIO_NET_CTRL_MAC 1 + #define VIRTIO_NET_CTRL_MAC_TABLE_SET 0 + #endif /* _LINUX_VIRTIO_NET_H */ |