const struct net_device_ops mlx5e_netdev_ops = {
        .ndo_open                = mlx5e_open,
        .ndo_stop                = mlx5e_close,
        .ndo_start_xmit          = mlx5e_xmit,
        .ndo_setup_tc            = mlx5e_setup_tc,
        .ndo_select_queue        = mlx5e_select_queue,
        .ndo_get_stats64         = mlx5e_get_stats,
        .ndo_set_rx_mode         = mlx5e_set_rx_mode,
        .ndo_set_mac_address     = mlx5e_set_mac,
        .ndo_vlan_rx_add_vid     = mlx5e_vlan_rx_add_vid,
        .ndo_vlan_rx_kill_vid    = mlx5e_vlan_rx_kill_vid,
        .ndo_set_features        = mlx5e_set_features,
        .ndo_fix_features        = mlx5e_fix_features,
        .ndo_change_mtu          = mlx5e_change_nic_mtu,
        .ndo_do_ioctl            = mlx5e_ioctl,
        .ndo_set_tx_maxrate      = mlx5e_set_tx_maxrate,
        .ndo_udp_tunnel_add      = mlx5e_add_vxlan_port,
        .ndo_udp_tunnel_del      = mlx5e_del_vxlan_port,
        .ndo_features_check      = mlx5e_features_check,
        .ndo_tx_timeout          = mlx5e_tx_timeout,
        .ndo_bpf                 = mlx5e_xdp,
        .ndo_xdp_xmit            = mlx5e_xdp_xmit,
        .ndo_xsk_wakeup          = mlx5e_xsk_wakeup,
#ifdef CONFIG_MLX5_EN_ARFS
        .ndo_rx_flow_steer       = mlx5e_rx_flow_steer,
#endif
#ifdef CONFIG_MLX5_ESWITCH
        .ndo_bridge_setlink      = mlx5e_bridge_setlink,
        .ndo_bridge_getlink      = mlx5e_bridge_getlink,

        /* SRIOV E-Switch NDOs */
        .ndo_set_vf_mac          = mlx5e_set_vf_mac,
        .ndo_set_vf_vlan         = mlx5e_set_vf_vlan,
        .ndo_set_vf_spoofchk     = mlx5e_set_vf_spoofchk,
        .ndo_set_vf_trust        = mlx5e_set_vf_trust,
        .ndo_set_vf_rate         = mlx5e_set_vf_rate,
        .ndo_get_vf_config       = mlx5e_get_vf_config,
        .ndo_set_vf_link_state   = mlx5e_set_vf_link_state,
        .ndo_get_vf_stats        = mlx5e_get_vf_stats,
#endif
};

 

UDP隧道Offload

对于支持UDP隧道（VXLAN/GENEVE）Offloading功能的物理网卡，其通过标志位NETDEV_UDP_TUNNEL_PUSH_INFO/NETDEV_UDP_TUNNEL_DROP_INFO进行表示。函数udp_tunnel_push_rx_port与udp_tunnel_drop_rx_port用于设置和取消网卡的Offloading功能。

 

 

void udp_tunnel_push_rx_port(struct net_device *dev, struct socket *sock,
                 unsigned short type)
{
    struct sock *sk = sock->sk;
    struct udp_tunnel_info ti;
    if (!dev->netdev_ops->ndo_udp_tunnel_add ||
        !(dev->features & NETIF_F_RX_UDP_TUNNEL_PORT))
        return;
    ti.type = type;
    ti.sa_family = sk->sk_family;
    ti.port = inet_sk(sk)->inet_sport;
    dev->netdev_ops->ndo_udp_tunnel_add(dev, &ti);
}
EXPORT_SYMBOL_GPL(udp_tunnel_push_rx_port);
void udp_tunnel_drop_rx_port(struct net_device *dev, struct socket *sock,
                 unsigned short type)
{
    struct sock *sk = sock->sk;
    struct udp_tunnel_info ti;
    if (!dev->netdev_ops->ndo_udp_tunnel_del ||
        !(dev->features & NETIF_F_RX_UDP_TUNNEL_PORT))
        return;
    ti.type = type;
    ti.sa_family = sk->sk_family;
    ti.port = inet_sk(sk)->inet_sport;
    dev->netdev_ops->ndo_udp_tunnel_del(dev, &ti);
}