diff options
Diffstat (limited to 'include/linux/virtio_net.h')
| -rw-r--r-- | include/linux/virtio_net.h | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/include/linux/virtio_net.h b/include/linux/virtio_net.h new file mode 100644 index 00000000000..ae469ae55d3 --- /dev/null +++ b/include/linux/virtio_net.h @@ -0,0 +1,36 @@ +#ifndef _LINUX_VIRTIO_NET_H +#define _LINUX_VIRTIO_NET_H +#include <linux/virtio_config.h> + +/* The ID for virtio_net */ +#define VIRTIO_ID_NET 1 + +/* The bitmap of config for virtio net */ +#define VIRTIO_CONFIG_NET_F 0x40 +#define VIRTIO_NET_F_NO_CSUM 0 +#define VIRTIO_NET_F_TSO4 1 +#define VIRTIO_NET_F_UFO 2 +#define VIRTIO_NET_F_TSO4_ECN 3 +#define VIRTIO_NET_F_TSO6 4 + +/* The config defining mac address. */ +#define VIRTIO_CONFIG_NET_MAC_F 0x41 + +/* This is the first element of the scatter-gather list. If you don't + * specify GSO or CSUM features, you can simply ignore the header. */ +struct virtio_net_hdr +{ +#define VIRTIO_NET_HDR_F_NEEDS_CSUM 1 // Use csum_start, csum_offset + __u8 flags; +#define VIRTIO_NET_HDR_GSO_NONE 0 // Not a GSO frame +#define VIRTIO_NET_HDR_GSO_TCPV4 1 // GSO frame, IPv4 TCP (TSO) +/* FIXME: Do we need this? If they said they can handle ECN, do they care? */ +#define VIRTIO_NET_HDR_GSO_TCPV4_ECN 2 // GSO frame, IPv4 TCP w/ ECN +#define VIRTIO_NET_HDR_GSO_UDP 3 // GSO frame, IPv4 UDP (UFO) +#define VIRTIO_NET_HDR_GSO_TCPV6 4 // GSO frame, IPv6 TCP + __u8 gso_type; + __u16 gso_size; + __u16 csum_start; + __u16 csum_offset; +}; +#endif /* _LINUX_VIRTIO_NET_H */ |