Return to virtio-net.h CVS log

Up to [Qemu by Fabrice Bellard] / qemu / roms / ipxe / src / drivers / net

Annotation of qemu/roms/ipxe/src/drivers/net/virtio-net.h, revision 1.1.1.1

1.1       root        1: #ifndef _VIRTIO_NET_H_
                      2: # define _VIRTIO_NET_H_
                      3: 
                      4: /* The feature bitmap for virtio net */
                      5: #define VIRTIO_NET_F_CSUM       0       /* Host handles pkts w/ partial csum */
                      6: #define VIRTIO_NET_F_GUEST_CSUM 1       /* Guest handles pkts w/ partial csum */
                      7: #define VIRTIO_NET_F_MAC        5       /* Host has given MAC address. */
                      8: #define VIRTIO_NET_F_GSO        6       /* Host handles pkts w/ any GSO type */
                      9: #define VIRTIO_NET_F_GUEST_TSO4 7       /* Guest can handle TSOv4 in. */
                     10: #define VIRTIO_NET_F_GUEST_TSO6 8       /* Guest can handle TSOv6 in. */
                     11: #define VIRTIO_NET_F_GUEST_ECN  9       /* Guest can handle TSO[6] w/ ECN in. */
                     12: #define VIRTIO_NET_F_GUEST_UFO  10      /* Guest can handle UFO in. */
                     13: #define VIRTIO_NET_F_HOST_TSO4  11      /* Host can handle TSOv4 in. */
                     14: #define VIRTIO_NET_F_HOST_TSO6  12      /* Host can handle TSOv6 in. */
                     15: #define VIRTIO_NET_F_HOST_ECN   13      /* Host can handle TSO[6] w/ ECN in. */
                     16: #define VIRTIO_NET_F_HOST_UFO   14      /* Host can handle UFO in. */
                     17: 
                     18: struct virtio_net_config
                     19: {
                     20:    /* The config defining mac address (if VIRTIO_NET_F_MAC) */
                     21:    u8 mac[6];
                     22: } __attribute__((packed));
                     23: 
                     24: /* This is the first element of the scatter-gather list.  If you don't
                     25:  * specify GSO or CSUM features, you can simply ignore the header. */
                     26: 
                     27: struct virtio_net_hdr
                     28: {
                     29: #define VIRTIO_NET_HDR_F_NEEDS_CSUM     1       // Use csum_start, csum_offset
                     30:    uint8_t flags;
                     31: #define VIRTIO_NET_HDR_GSO_NONE         0       // Not a GSO frame
                     32: #define VIRTIO_NET_HDR_GSO_TCPV4        1       // GSO frame, IPv4 TCP (TSO)
                     33: /* FIXME: Do we need this?  If they said they can handle ECN, do they care? */
                     34: #define VIRTIO_NET_HDR_GSO_TCPV4_ECN    2       // GSO frame, IPv4 TCP w/ ECN
                     35: #define VIRTIO_NET_HDR_GSO_UDP          3       // GSO frame, IPv4 UDP (UFO)
                     36: #define VIRTIO_NET_HDR_GSO_TCPV6        4       // GSO frame, IPv6 TCP
                     37: #define VIRTIO_NET_HDR_GSO_ECN          0x80    // TCP has ECN set
                     38:    uint8_t gso_type;
                     39:    uint16_t hdr_len;
                     40:    uint16_t gso_size;
                     41:    uint16_t csum_start;
                     42:    uint16_t csum_offset;
                     43: };
                     44: #endif /* _VIRTIO_NET_H_ */

This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.