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Implement SIOCGIFRSSKEY and SIOCGIFRSSHASH and mlx5en(4).

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MFC after: 1 week
Sponsored by: Mellanox Technologies // NVIDIA Networking
This commit is contained in:
Hans Petter Selasky 2021-01-08 12:12:02 +01:00
parent 480570dbb3
commit a00718e1df
1 changed files with 51 additions and 11 deletions
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62
sys/dev/mlx5/mlx5_en/mlx5_en_main.c
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@ -2756,6 +2756,31 @@ mlx5e_close_rqt(struct mlx5e_priv *priv)
mlx5_cmd_exec(priv->mdev, in, sizeof(in), out, sizeof(out));
}
#define MLX5E_RSS_KEY_SIZE (10 * 4) /* bytes */
static void
mlx5e_get_rss_key(void *key_ptr)
{
#ifdef RSS
rss_getkey(key_ptr);
#else
static const u32 rsskey[] = {
cpu_to_be32(0xD181C62C),
cpu_to_be32(0xF7F4DB5B),
cpu_to_be32(0x1983A2FC),
cpu_to_be32(0x943E1ADB),
cpu_to_be32(0xD9389E6B),
cpu_to_be32(0xD1039C2C),
cpu_to_be32(0xA74499AD),
cpu_to_be32(0x593D56D9),
cpu_to_be32(0xF3253C06),
cpu_to_be32(0x2ADC1FFC),
};
CTASSERT(sizeof(rsskey) == MLX5E_RSS_KEY_SIZE);
memcpy(key_ptr, rsskey, MLX5E_RSS_KEY_SIZE);
#endif
}
static void
mlx5e_build_tir_ctx(struct mlx5e_priv *priv, u32 * tirc, int tt)
{
@ -2807,26 +2832,19 @@ mlx5e_build_tir_ctx(struct mlx5e_priv *priv, u32 * tirc, int tt)
MLX5_SET(tirc, tirc, rx_hash_fn,
MLX5_TIRC_RX_HASH_FN_HASH_TOEPLITZ);
hkey = (__be32 *) MLX5_ADDR_OF(tirc, tirc, rx_hash_toeplitz_key);
CTASSERT(MLX5_FLD_SZ_BYTES(tirc, rx_hash_toeplitz_key) >=
MLX5E_RSS_KEY_SIZE);
#ifdef RSS
/*
* The FreeBSD RSS implementation does currently not
* support symmetric Toeplitz hashes:
*/
MLX5_SET(tirc, tirc, rx_hash_symmetric, 0);
rss_getkey((uint8_t *)hkey);
#else
MLX5_SET(tirc, tirc, rx_hash_symmetric, 1);
hkey[0] = cpu_to_be32(0xD181C62C);
hkey[1] = cpu_to_be32(0xF7F4DB5B);
hkey[2] = cpu_to_be32(0x1983A2FC);
hkey[3] = cpu_to_be32(0x943E1ADB);
hkey[4] = cpu_to_be32(0xD9389E6B);
hkey[5] = cpu_to_be32(0xD1039C2C);
hkey[6] = cpu_to_be32(0xA74499AD);
hkey[7] = cpu_to_be32(0x593D56D9);
hkey[8] = cpu_to_be32(0xF3253C06);
hkey[9] = cpu_to_be32(0x2ADC1FFC);
#endif
mlx5e_get_rss_key(hkey);
break;
}
@ -3259,6 +3277,8 @@ mlx5e_ioctl(struct ifnet *ifp, u_long command, caddr_t data)
struct ifreq *ifr;
struct ifdownreason *ifdr;
struct ifi2creq i2c;
struct ifrsskey *ifrk;
struct ifrsshash *ifrh;
int error = 0;
int mask = 0;
int size_read = 0;
@ -3541,6 +3561,26 @@ mlx5e_ioctl(struct ifnet *ifp, u_long command, caddr_t data)
ifdr->ifdr_reason = IFDR_REASON_MSG;
break;
case SIOCGIFRSSKEY:
ifrk = (struct ifrsskey *)data;
ifrk->ifrk_func = RSS_FUNC_TOEPLITZ;
ifrk->ifrk_keylen = MLX5E_RSS_KEY_SIZE;
CTASSERT(sizeof(ifrk->ifrk_key) >= MLX5E_RSS_KEY_SIZE);
mlx5e_get_rss_key(ifrk->ifrk_key);
break;
case SIOCGIFRSSHASH:
ifrh = (struct ifrsshash *)data;
ifrh->ifrh_func = RSS_FUNC_TOEPLITZ;
ifrh->ifrh_types =
RSS_TYPE_IPV4 |
RSS_TYPE_TCP_IPV4 |
RSS_TYPE_UDP_IPV4 |
RSS_TYPE_IPV6 |
RSS_TYPE_TCP_IPV6 |
RSS_TYPE_UDP_IPV6;
break;
default:
error = ether_ioctl(ifp, command, data);
break;