ESP RSS support for NVIDIA Mellanox ConnectX-6 Ethernet Adapter Cards

[高钧浩]

Hi borisp, saeedm

     I have seen mlx5 driver in 5.12.0-rc4 kernel, then find that
mlx5e_set_rss_hash_opt only support tcp4/udp4/tcp6/udp6. So mlx5
kernel driver doesn't support esp4 rss? Then do you have any plan to
support esp4 or other latest mlx5 driver have supported esp4? Then
does NVIDIA Mellanox ConnectX-6 Ethernet Adapter Cards support esp4
rss in hardware?

static int mlx5e_set_rss_hash_opt(struct mlx5e_priv *priv,
                 struct ethtool_rxnfc *nfc)
{
    int inlen = MLX5_ST_SZ_BYTES(modify_tir_in);
    enum mlx5e_traffic_types tt;
    u8 rx_hash_field = 0;
    void *in;
    tt = flow_type_to_traffic_type(nfc->flow_type);
    if (tt == MLX5E_NUM_INDIR_TIRS)
        return -EINVAL;
    /* RSS does not support anything other than hashing to queues
     * on src IP, dest IP, TCP/UDP src port and TCP/UDP dest
     * port.
     */
    if (nfc->flow_type != TCP_V4_FLOW &&
      nfc->flow_type != TCP_V6_FLOW &&
      nfc->flow_type != UDP_V4_FLOW &&
      nfc->flow_type != UDP_V6_FLOW)
        return -EOPNOTSUPP;

Best Regards,
Junhao