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virtio: remove unused id field from struct virtio_blk_outhdr
[mirror_ubuntu-zesty-kernel.git] / include / linux / virtio_net.h
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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
a586d4f6 8/* The feature bitmap for virtio net */
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9#define VIRTIO_NET_F_NO_CSUM 0
10#define VIRTIO_NET_F_TSO4 1
11#define VIRTIO_NET_F_UFO 2
12#define VIRTIO_NET_F_TSO4_ECN 3
13#define VIRTIO_NET_F_TSO6 4
a586d4f6 14#define VIRTIO_NET_F_MAC 5
296f96fc 15
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16struct virtio_net_config
17{
18 /* The config defining mac address (if VIRTIO_NET_F_MAC) */
19 __u8 mac[6];
20} __attribute__((packed));
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21
22/* This is the first element of the scatter-gather list. If you don't
23 * specify GSO or CSUM features, you can simply ignore the header. */
24struct virtio_net_hdr
25{
26#define VIRTIO_NET_HDR_F_NEEDS_CSUM 1 // Use csum_start, csum_offset
27 __u8 flags;
28#define VIRTIO_NET_HDR_GSO_NONE 0 // Not a GSO frame
29#define VIRTIO_NET_HDR_GSO_TCPV4 1 // GSO frame, IPv4 TCP (TSO)
30/* FIXME: Do we need this? If they said they can handle ECN, do they care? */
31#define VIRTIO_NET_HDR_GSO_TCPV4_ECN 2 // GSO frame, IPv4 TCP w/ ECN
32#define VIRTIO_NET_HDR_GSO_UDP 3 // GSO frame, IPv4 UDP (UFO)
33#define VIRTIO_NET_HDR_GSO_TCPV6 4 // GSO frame, IPv6 TCP
34 __u8 gso_type;
35 __u16 gso_size;
36 __u16 csum_start;
37 __u16 csum_offset;
38};
39#endif /* _LINUX_VIRTIO_NET_H */