diff options
author | fishsoupisgood <github@madingley.org> | 2019-04-29 01:17:54 +0100 |
---|---|---|
committer | fishsoupisgood <github@madingley.org> | 2019-05-27 03:43:43 +0100 |
commit | 3f2546b2ef55b661fd8dd69682b38992225e86f6 (patch) | |
tree | 65ca85f13617aee1dce474596800950f266a456c /roms/ipxe/src/drivers/net/virtio-net.h | |
download | qemu-master.tar.gz qemu-master.tar.bz2 qemu-master.zip |
Diffstat (limited to 'roms/ipxe/src/drivers/net/virtio-net.h')
-rw-r--r-- | roms/ipxe/src/drivers/net/virtio-net.h | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/roms/ipxe/src/drivers/net/virtio-net.h b/roms/ipxe/src/drivers/net/virtio-net.h new file mode 100644 index 00000000..3abef28e --- /dev/null +++ b/roms/ipxe/src/drivers/net/virtio-net.h @@ -0,0 +1,44 @@ +#ifndef _VIRTIO_NET_H_ +# define _VIRTIO_NET_H_ + +/* The feature bitmap for virtio net */ +#define VIRTIO_NET_F_CSUM 0 /* Host handles pkts w/ partial csum */ +#define VIRTIO_NET_F_GUEST_CSUM 1 /* Guest handles pkts w/ partial csum */ +#define VIRTIO_NET_F_MAC 5 /* Host has given MAC address. */ +#define VIRTIO_NET_F_GSO 6 /* Host handles pkts w/ any GSO type */ +#define VIRTIO_NET_F_GUEST_TSO4 7 /* Guest can handle TSOv4 in. */ +#define VIRTIO_NET_F_GUEST_TSO6 8 /* Guest can handle TSOv6 in. */ +#define VIRTIO_NET_F_GUEST_ECN 9 /* Guest can handle TSO[6] w/ ECN in. */ +#define VIRTIO_NET_F_GUEST_UFO 10 /* Guest can handle UFO in. */ +#define VIRTIO_NET_F_HOST_TSO4 11 /* Host can handle TSOv4 in. */ +#define VIRTIO_NET_F_HOST_TSO6 12 /* Host can handle TSOv6 in. */ +#define VIRTIO_NET_F_HOST_ECN 13 /* Host can handle TSO[6] w/ ECN in. */ +#define VIRTIO_NET_F_HOST_UFO 14 /* Host can handle UFO in. */ + +struct virtio_net_config +{ + /* The config defining mac address (if VIRTIO_NET_F_MAC) */ + u8 mac[6]; +} __attribute__((packed)); + +/* 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 + uint8_t 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 +#define VIRTIO_NET_HDR_GSO_ECN 0x80 // TCP has ECN set + uint8_t gso_type; + uint16_t hdr_len; + uint16_t gso_size; + uint16_t csum_start; + uint16_t csum_offset; +}; +#endif /* _VIRTIO_NET_H_ */ |