diff options
| author | Amir Vadai <amirv@mellanox.com> | 2014-07-08 12:28:12 +0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-07-09 07:00:49 +0400 |
| commit | fbc6daf19745b372c0d909e5d74ab02e42b70e51 (patch) | |
| tree | 261af07430baed5f056fde747f73e9f9879bf02c /drivers/net/ethernet/mellanox/mlx4/en_netdev.c | |
| parent | 0b0302449110ca5ca4350458ed57b971fcb78ec1 (diff) | |
| download | linux-fbc6daf19745b372c0d909e5d74ab02e42b70e51.tar.xz | |
net/mlx4_en: Ignore budget on TX napi polling
It is recommended that TX work not count against the quota.
The cost of TX packet liberation is a minute percentage of what it costs to
process an RX frame. Furthermore, that SKB freeing makes memory available for
other paths in the stack.
Give the TX a larger budget and be more aggressive about cleaning up the Tx
descriptors this budget could be changed using ethtool:
$ ethtool -C eth1 tx-frames-irq <budget>
Signed-off-by: Amir Vadai <amirv@mellanox.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 | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c index e94d96f0ef55..7345c43b019e 100644 --- a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c +++ b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c @@ -2473,6 +2473,7 @@ int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port, MLX4_WQE_CTRL_SOLICITED); priv->num_tx_rings_p_up = mdev->profile.num_tx_rings_p_up; priv->tx_ring_num = prof->tx_ring_num; + priv->tx_work_limit = MLX4_EN_DEFAULT_TX_WORK; priv->tx_ring = kzalloc(sizeof(struct mlx4_en_tx_ring *) * MAX_TX_RINGS, GFP_KERNEL); |