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usr.sbin/bhyve/net_backends.h

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/* /*
* Network device capabilities taken from the VirtIO standard. * Network device capabilities taken from the VirtIO standard.
* Despite the name, these capabilities can be used by different frontents * Despite the name, these capabilities can be used by different frontents
* (virtio-net, ptnet) and supported by different backends (netmap, tap, ...). * (virtio-net, ptnet) and supported by different backends (netmap, tap, ...).
*/ */
#define VIRTIO_NET_F_CSUM (1 << 0) /* host handles partial cksum */ #define VIRTIO_NET_F_CSUM (1 << 0) /* host handles partial cksum */
#define VIRTIO_NET_F_GUEST_CSUM (1 << 1) /* guest handles partial cksum */ #define VIRTIO_NET_F_GUEST_CSUM (1 << 1) /* guest handles partial cksum */
#define VIRTIO_NET_F_MTU (1 << 3) /* initial MTU advice */
#define VIRTIO_NET_F_MAC (1 << 5) /* host supplies MAC */ #define VIRTIO_NET_F_MAC (1 << 5) /* host supplies MAC */
#define VIRTIO_NET_F_GSO_DEPREC (1 << 6) /* deprecated: host handles GSO */ #define VIRTIO_NET_F_GSO_DEPREC (1 << 6) /* deprecated: host handles GSO */
#define VIRTIO_NET_F_GUEST_TSO4 (1 << 7) /* guest can rcv TSOv4 */ #define VIRTIO_NET_F_GUEST_TSO4 (1 << 7) /* guest can rcv TSOv4 */
#define VIRTIO_NET_F_GUEST_TSO6 (1 << 8) /* guest can rcv TSOv6 */ #define VIRTIO_NET_F_GUEST_TSO6 (1 << 8) /* guest can rcv TSOv6 */
#define VIRTIO_NET_F_GUEST_ECN (1 << 9) /* guest can rcv TSO with ECN */ #define VIRTIO_NET_F_GUEST_ECN (1 << 9) /* guest can rcv TSO with ECN */
#define VIRTIO_NET_F_GUEST_UFO (1 << 10) /* guest can rcv UFO */ #define VIRTIO_NET_F_GUEST_UFO (1 << 10) /* guest can rcv UFO */
#define VIRTIO_NET_F_HOST_TSO4 (1 << 11) /* host can rcv TSOv4 */ #define VIRTIO_NET_F_HOST_TSO4 (1 << 11) /* host can rcv TSOv4 */
#define VIRTIO_NET_F_HOST_TSO6 (1 << 12) /* host can rcv TSOv6 */ #define VIRTIO_NET_F_HOST_TSO6 (1 << 12) /* host can rcv TSOv6 */
#define VIRTIO_NET_F_HOST_ECN (1 << 13) /* host can rcv TSO with ECN */ #define VIRTIO_NET_F_HOST_ECN (1 << 13) /* host can rcv TSO with ECN */
#define VIRTIO_NET_F_HOST_UFO (1 << 14) /* host can rcv UFO */ #define VIRTIO_NET_F_HOST_UFO (1 << 14) /* host can rcv UFO */
#define VIRTIO_NET_F_MRG_RXBUF (1 << 15) /* host can merge RX buffers */ #define VIRTIO_NET_F_MRG_RXBUF (1 << 15) /* host can merge RX buffers */
#define VIRTIO_NET_F_STATUS (1 << 16) /* config status field available */ #define VIRTIO_NET_F_STATUS (1 << 16) /* config status field available */
#define VIRTIO_NET_F_CTRL_VQ (1 << 17) /* control channel available */ #define VIRTIO_NET_F_CTRL_VQ (1 << 17) /* control channel available */
#define VIRTIO_NET_F_CTRL_RX (1 << 18) /* control channel RX mode support */ #define VIRTIO_NET_F_CTRL_RX (1 << 18) /* control channel RX mode support */
#define VIRTIO_NET_F_CTRL_VLAN (1 << 19) /* control channel VLAN filtering */ #define VIRTIO_NET_F_CTRL_VLAN (1 << 19) /* control channel VLAN filtering */
#define VIRTIO_NET_F_GUEST_ANNOUNCE \ #define VIRTIO_NET_F_GUEST_ANNOUNCE \
(1 << 21) /* guest can send gratuitous pkts */ (1 << 21) /* guest can send gratuitous pkts */
#define VIRTIO_NET_F_MQ (1 << 22) /* host supports multiple VQ pairs */
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/* /*
* Fixed network header size * Fixed network header size
*/ */
struct virtio_net_rxhdr { struct virtio_net_rxhdr {
uint8_t vrh_flags; uint8_t vrh_flags;
uint8_t vrh_gso_type; uint8_t vrh_gso_type;
uint16_t vrh_hdr_len; uint16_t vrh_hdr_len;
uint16_t vrh_gso_size; uint16_t vrh_gso_size;
uint16_t vrh_csum_start; uint16_t vrh_csum_start;
uint16_t vrh_csum_offset; uint16_t vrh_csum_offset;
uint16_t vrh_bufs; uint16_t vrh_bufs;
} __packed; } __packed;
#endif /* __NET_BACKENDS_H__ */ #endif /* __NET_BACKENDS_H__ */