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mlx4_en: Adding rxhash support

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Moving to Toeplitz function in RSS calculation.
Reporting rxhash in skb.

Signed-off-by: Yevgeny Petrilin <yevgenyp@mellanox.co.il>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Yevgeny Petrilin 2011-10-18 01:51:24 +00:00 committed by David S. Miller
parent 3b61008d88
commit ad86107f7b
2 changed files with 13 additions and 1 deletions
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2
drivers/net/ethernet/mellanox/mlx4/en_netdev.c
View File

@ -1084,7 +1084,7 @@ int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port,
dev->vlan_features = dev->hw_features;
dev->hw_features |= NETIF_F_RXCSUM;
dev->hw_features |= NETIF_F_RXCSUM | NETIF_F_RXHASH;
dev->features = dev->hw_features | NETIF_F_HIGHDMA |
NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX |
NETIF_F_HW_VLAN_FILTER;

12
drivers/net/ethernet/mellanox/mlx4/en_rx.c
View File

@ -618,6 +618,9 @@ int mlx4_en_process_rx_cq(struct net_device *dev, struct mlx4_en_cq *cq, int bud
__vlan_hwaccel_put_tag(gro_skb, vid);
}
if (dev->features & NETIF_F_RXHASH)
gro_skb->rxhash = be32_to_cpu(cqe->immed_rss_invalid);
skb_record_rx_queue(gro_skb, cq->ring);
napi_gro_frags(&cq->napi);
@ -651,6 +654,9 @@ int mlx4_en_process_rx_cq(struct net_device *dev, struct mlx4_en_cq *cq, int bud
skb->protocol = eth_type_trans(skb, dev);
skb_record_rx_queue(skb, cq->ring);
if (dev->features & NETIF_F_RXHASH)
skb->rxhash = be32_to_cpu(cqe->immed_rss_invalid);
if (be32_to_cpu(cqe->vlan_my_qpn) &
MLX4_CQE_VLAN_PRESENT_MASK)
__vlan_hwaccel_put_tag(skb, be16_to_cpu(cqe->sl_vid));
@ -834,6 +840,9 @@ int mlx4_en_config_rss_steer(struct mlx4_en_priv *priv)
int i, qpn;
int err = 0;
int good_qps = 0;
static const u32 rsskey[10] = { 0xD181C62C, 0xF7F4DB5B, 0x1983A2FC,
0x943E1ADB, 0xD9389E6B, 0xD1039C2C, 0xA74499AD,
0x593D56D9, 0xF3253C06, 0x2ADC1FFC};
en_dbg(DRV, priv, "Configuring rss steering\n");
err = mlx4_qp_reserve_range(mdev->dev, priv->rx_ring_num,
@ -871,6 +880,9 @@ int mlx4_en_config_rss_steer(struct mlx4_en_priv *priv)
(rss_map->base_qpn));
rss_context->default_qpn = cpu_to_be32(rss_map->base_qpn);
rss_context->flags = rss_mask;
rss_context->hash_fn = 1;
for (i = 0; i < 10; i++)
rss_context->rss_key[i] = rsskey[i];
if (priv->mdev->profile.udp_rss)
rss_context->base_qpn_udp = rss_context->default_qpn;