diff options
| author | aliguori <aliguori@c046a42c-6fe2-441c-8c8c-71466251a162> | 2009-02-05 22:36:28 +0000 |
|---|---|---|
| committer | aliguori <aliguori@c046a42c-6fe2-441c-8c8c-71466251a162> | 2009-02-05 22:36:28 +0000 |
| commit | b6503ed9b8815ecfb82fe9faba28936365321248 (patch) | |
| tree | fcd2f7c0b3102723e7595cc9215bd913f8524103 /hw/virtio-net.h | |
| parent | 3831ab2094f6b573617b0f53b663bba1f036dc45 (diff) | |
qemu:virtio-net: Add additional MACs via a filter table (Alex Williamson)
Create a filter table and allow the guest to populate it with the
MAC class control commands. We manage the size and usage of the
filter table including enabling promiscuous and all-multi modes
as necessary. The guest should therefore assume the table is
infinite. Eventually this might allow us to bind directly to a
hardware NIC and manipulate a physical MAC filter.
The specifics of the TABLE_SET command are documented in
virtio-net.h. Separate buffers in the same command are used
for unicaste and multicast addresses for priority and
sychronization. With this we can export the VIRTIO_NET_F_CTRL_RX
feature bit.
Signed-off-by: Alex Williamson <alex.williamson@hp.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6539 c046a42c-6fe2-441c-8c8c-71466251a162
Diffstat (limited to 'hw/virtio-net.h')
| -rw-r--r-- | hw/virtio-net.h | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/hw/virtio-net.h b/hw/virtio-net.h index ce8e4b48f0..291fa9da57 100644 --- a/hw/virtio-net.h +++ b/hw/virtio-net.h @@ -113,4 +113,26 @@ typedef uint8_t virtio_net_ctrl_ack; #define VIRTIO_NET_CTRL_RX_MODE_PROMISC 0 #define VIRTIO_NET_CTRL_RX_MODE_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 { + uint32_t entries; + uint8_t macs[][ETH_ALEN]; +}; +#define VIRTIO_NET_CTRL_MAC 1 + #define VIRTIO_NET_CTRL_MAC_TABLE_SET 0 + #endif |