mlx4_en: Added Ethtool support for TX Interrupt coalescing
Signed-off-by: Yevgeny Petrilin <yevgenyp@mellanox.co.il>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c b/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c
index e15a1fb..72901ce 100644
--- a/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c
@@ -359,8 +359,8 @@
{
struct mlx4_en_priv *priv = netdev_priv(dev);
- coal->tx_coalesce_usecs = 0;
- coal->tx_max_coalesced_frames = 0;
+ coal->tx_coalesce_usecs = priv->tx_usecs;
+ coal->tx_max_coalesced_frames = priv->tx_frames;
coal->rx_coalesce_usecs = priv->rx_usecs;
coal->rx_max_coalesced_frames = priv->rx_frames;
@@ -388,6 +388,21 @@
MLX4_EN_RX_COAL_TIME :
coal->rx_coalesce_usecs;
+ /* Setting TX coalescing parameters */
+ if (coal->tx_coalesce_usecs != priv->tx_usecs ||
+ coal->tx_max_coalesced_frames != priv->tx_frames) {
+ priv->tx_usecs = coal->tx_coalesce_usecs;
+ priv->tx_frames = coal->tx_max_coalesced_frames;
+ for (i = 0; i < priv->tx_ring_num; i++) {
+ priv->tx_cq[i].moder_cnt = priv->tx_frames;
+ priv->tx_cq[i].moder_time = priv->tx_usecs;
+ if (mlx4_en_set_cq_moder(priv, &priv->tx_cq[i])) {
+ en_warn(priv, "Failed changing moderation "
+ "for TX cq %d\n", i);
+ }
+ }
+ }
+
/* Set adaptive coalescing params */
priv->pkt_rate_low = coal->pkt_rate_low;
priv->rx_usecs_low = coal->rx_coalesce_usecs_low;