| Rusty Russell | 296f96f | 2007-10-22 11:03:37 +1000 | [diff] [blame] | 1 | #ifndef _LINUX_VIRTIO_NET_H |
| 2 | #define _LINUX_VIRTIO_NET_H |
| 3 | #include <linux/virtio_config.h> |
| 4 | |
| 5 | /* The ID for virtio_net */ |
| 6 | #define VIRTIO_ID_NET 1 |
| 7 | |
| 8 | /* The bitmap of config for virtio net */ |
| 9 | #define VIRTIO_CONFIG_NET_F 0x40 |
| 10 | #define VIRTIO_NET_F_NO_CSUM 0 |
| 11 | #define VIRTIO_NET_F_TSO4 1 |
| 12 | #define VIRTIO_NET_F_UFO 2 |
| 13 | #define VIRTIO_NET_F_TSO4_ECN 3 |
| 14 | #define VIRTIO_NET_F_TSO6 4 |
| 15 | |
| 16 | /* The config defining mac address. */ |
| 17 | #define VIRTIO_CONFIG_NET_MAC_F 0x41 |
| 18 | |
| 19 | /* This is the first element of the scatter-gather list. If you don't |
| 20 | * specify GSO or CSUM features, you can simply ignore the header. */ |
| 21 | struct virtio_net_hdr |
| 22 | { |
| 23 | #define VIRTIO_NET_HDR_F_NEEDS_CSUM 1 // Use csum_start, csum_offset |
| 24 | __u8 flags; |
| 25 | #define VIRTIO_NET_HDR_GSO_NONE 0 // Not a GSO frame |
| 26 | #define VIRTIO_NET_HDR_GSO_TCPV4 1 // GSO frame, IPv4 TCP (TSO) |
| 27 | /* FIXME: Do we need this? If they said they can handle ECN, do they care? */ |
| 28 | #define VIRTIO_NET_HDR_GSO_TCPV4_ECN 2 // GSO frame, IPv4 TCP w/ ECN |
| 29 | #define VIRTIO_NET_HDR_GSO_UDP 3 // GSO frame, IPv4 UDP (UFO) |
| 30 | #define VIRTIO_NET_HDR_GSO_TCPV6 4 // GSO frame, IPv6 TCP |
| 31 | __u8 gso_type; |
| 32 | __u16 gso_size; |
| 33 | __u16 csum_start; |
| 34 | __u16 csum_offset; |
| 35 | }; |
| 36 | #endif /* _LINUX_VIRTIO_NET_H */ |