diff options
| author | Saeed Mahameed <saeedm@mellanox.com> | 2017-06-15 14:35:32 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-06-16 05:53:22 +0300 |
| commit | 4931c6ef04b4eb6f726def76f845c10d1bb7057d (patch) | |
| tree | 98cbf8b933e86828cceabfad8f3f5479e0cefd29 /drivers/net/ethernet/mellanox/mlx4/en_netdev.c | |
| parent | cf97050d547281edc5b813b501d5888c60f23bb2 (diff) | |
| download | linux-4931c6ef04b4eb6f726def76f845c10d1bb7057d.tar.xz | |
net/mlx4_en: Optimized single ring steering
Avoid touching RX QP RSS context when loading with only
one RX ring, to allow optimized A0 RX steering.
Enable by:
- loading mlx4_core with module param: log_num_mgm_entry_size = -6.
- then: ethtool -L <interface> rx 1
Performance tests:
Tested on ConnectX3Pro, Intel(R) Xeon(R) CPU E5-2680 v3 @ 2.50GHz
XDP_DROP packet rate:
-------------------------------------
| Before | After | Gain |
IPv4 | 20.5 Mpps | 28.1 Mpps | 37% |
IPv6 | 18.4 Mpps | 28.1 Mpps | 53% |
-------------------------------------
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Cc: kernel-team@fb.com
Cc: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlx4/en_netdev.c')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx4/en_netdev.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c index c1de75fc399a..51ce111b719e 100644 --- a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c +++ b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c @@ -596,6 +596,8 @@ static int mlx4_en_get_qp(struct mlx4_en_priv *priv) return err; } + en_info(priv, "Steering Mode %d\n", dev->caps.steering_mode); + if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) { int base_qpn = mlx4_get_base_qpn(dev, priv->port); *qpn = base_qpn + index; @@ -1010,7 +1012,7 @@ static void mlx4_en_do_multicast(struct mlx4_en_priv *priv, memcpy(&mc_list[10], mclist->addr, ETH_ALEN); mc_list[5] = priv->port; err = mlx4_multicast_detach(mdev->dev, - &priv->rss_map.indir_qp, + priv->rss_map.indir_qp, mc_list, MLX4_PROT_ETH, mclist->reg_id); @@ -1032,7 +1034,7 @@ static void mlx4_en_do_multicast(struct mlx4_en_priv *priv, /* needed for B0 steering support */ mc_list[5] = priv->port; err = mlx4_multicast_attach(mdev->dev, - &priv->rss_map.indir_qp, + priv->rss_map.indir_qp, mc_list, priv->port, 0, MLX4_PROT_ETH, @@ -1742,7 +1744,7 @@ int mlx4_en_start_port(struct net_device *dev) /* Attach rx QP to bradcast address */ eth_broadcast_addr(&mc_list[10]); mc_list[5] = priv->port; /* needed for B0 steering support */ - if (mlx4_multicast_attach(mdev->dev, &priv->rss_map.indir_qp, mc_list, + if (mlx4_multicast_attach(mdev->dev, priv->rss_map.indir_qp, mc_list, priv->port, 0, MLX4_PROT_ETH, &priv->broadcast_id)) mlx4_warn(mdev, "Failed Attaching Broadcast\n"); @@ -1866,12 +1868,12 @@ void mlx4_en_stop_port(struct net_device *dev, int detach) /* Detach All multicasts */ eth_broadcast_addr(&mc_list[10]); mc_list[5] = priv->port; /* needed for B0 steering support */ - mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp, mc_list, + mlx4_multicast_detach(mdev->dev, priv->rss_map.indir_qp, mc_list, MLX4_PROT_ETH, priv->broadcast_id); list_for_each_entry(mclist, &priv->curr_list, list) { memcpy(&mc_list[10], mclist->addr, ETH_ALEN); mc_list[5] = priv->port; - mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp, + mlx4_multicast_detach(mdev->dev, priv->rss_map.indir_qp, mc_list, MLX4_PROT_ETH, mclist->reg_id); if (mclist->tunnel_reg_id) mlx4_flow_detach(mdev->dev, mclist->tunnel_reg_id); |