diff options
| author | Gal Pressman <galp@mellanox.com> | 2017-01-11 14:32:26 +0200 |
|---|---|---|
| committer | Saeed Mahameed <saeedm@mellanox.com> | 2017-01-29 23:29:32 +0200 |
| commit | 1d3398facd08a7fd4202f269317a95668eb880b9 (patch) | |
| tree | a19e3d7f906e024711ccf35004f702d1cc460d4a /drivers/net/ethernet/mellanox | |
| parent | 3e621b19b0bb1f5bea34f1fbc5fb5629191eda2b (diff) | |
| download | linux-1d3398facd08a7fd4202f269317a95668eb880b9.tar.gz linux-1d3398facd08a7fd4202f269317a95668eb880b9.tar.xz | |
net/mlx5e: Modify TIRs hash only when it's needed
We don't need to modify our TIRs unless the user requested a change in
the hash function/key, for example when changing indirection only.
Tested:
# Modify TIRs hash is needed
ethtool -X ethX hkey <new key>
ethtool -X ethX hfunc <new func>
# Modify TIRs hash is not needed
ethtool -X ethX equal <new indirection table>
All cases are verified with TCP Multi-Stream traffic over IPv4 & IPv6.
Fixes: bdfc028de1b3 ("net/mlx5e: Fix ethtool RX hash func configuration change")
Signed-off-by: Gal Pressman <galp@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Diffstat (limited to 'drivers/net/ethernet/mellanox')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c | 18 |
1 files changed, 13 insertions, 5 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c b/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c index ffbdf9ee5a9b..6f4eb34259f0 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c @@ -996,6 +996,7 @@ static int mlx5e_set_rxfh(struct net_device *dev, const u32 *indir, { struct mlx5e_priv *priv = netdev_priv(dev); int inlen = MLX5_ST_SZ_BYTES(modify_tir_in); + bool hash_changed = false; void *in; if ((hfunc != ETH_RSS_HASH_NO_CHANGE) && @@ -1017,14 +1018,21 @@ static int mlx5e_set_rxfh(struct net_device *dev, const u32 *indir, mlx5e_redirect_rqt(priv, rqtn, MLX5E_INDIR_RQT_SIZE, 0); } - if (key) + if (hfunc != ETH_RSS_HASH_NO_CHANGE && + hfunc != priv->params.rss_hfunc) { + priv->params.rss_hfunc = hfunc; + hash_changed = true; + } + + if (key) { memcpy(priv->params.toeplitz_hash_key, key, sizeof(priv->params.toeplitz_hash_key)); + hash_changed = hash_changed || + priv->params.rss_hfunc == ETH_RSS_HASH_TOP; + } - if (hfunc != ETH_RSS_HASH_NO_CHANGE) - priv->params.rss_hfunc = hfunc; - - mlx5e_modify_tirs_hash(priv, in, inlen); + if (hash_changed) + mlx5e_modify_tirs_hash(priv, in, inlen); mutex_unlock(&priv->state_lock); |