diff options
| author | Saeed Mahameed | 2016-05-10 23:29:16 +0200 |
|---|---|---|
| committer | David S. Miller | 2016-05-12 01:42:39 +0200 |
| commit | b797a684b0ddeb6f78193c9b1bfae6bd824ec01a (patch) | |
| tree | 2edb95f99b366a5cda5dbacacae0fc5a703cf203 /drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c | |
| parent | net/mlx5e: Expand WQE stride when CQE compression is enabled (diff) | |
| download | kernel-qcow2-linux-b797a684b0ddeb6f78193c9b1bfae6bd824ec01a.tar.gz kernel-qcow2-linux-b797a684b0ddeb6f78193c9b1bfae6bd824ec01a.tar.xz kernel-qcow2-linux-b797a684b0ddeb6f78193c9b1bfae6bd824ec01a.zip | |
net/mlx5e: Enable CQE compression when PCI is slower than link
We turn the feature ON, only for servers with PCI BW < MAX LINK BW, as it
helps reducing PCI pressure on weak PCI slots, but it adds some software
overhead.
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c b/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c index 534d99e2f9c8..fc7dcc03b1de 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c @@ -613,6 +613,25 @@ static u32 ptys2ethtool_supported_port(u32 eth_proto_cap) return 0; } +int mlx5e_get_max_linkspeed(struct mlx5_core_dev *mdev, u32 *speed) +{ + u32 max_speed = 0; + u32 proto_cap; + int err; + int i; + + err = mlx5_query_port_proto_cap(mdev, &proto_cap, MLX5_PTYS_EN); + if (err) + return err; + + for (i = 0; i < MLX5E_LINK_MODES_NUMBER; ++i) + if (proto_cap & MLX5E_PROT_MASK(i)) + max_speed = max(max_speed, ptys2ethtool_table[i].speed); + + *speed = max_speed; + return 0; +} + static void get_speed_duplex(struct net_device *netdev, u32 eth_proto_oper, struct ethtool_cmd *cmd) |