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authorAya Levin <ayal@mellanox.com>2020-05-17 12:45:52 +0300
committerSaeed Mahameed <saeedm@mellanox.com>2020-06-12 01:37:57 +0300
commit5f1572e6178e47c3ace55ced187d93240952c9cd (patch)
tree929da6fda0078dab81a4d7b0e640aeb5db360144 /drivers/net
parent36d45fb9d2fdf348d778bfe73f0427db1c6f9bc7 (diff)
downloadlinux-5f1572e6178e47c3ace55ced187d93240952c9cd.tar.xz
net/mlx5e: Fix ethtool hfunc configuration change
Changing RX hash function requires rearranging of RQT internal indexes, the user isn't exposed to such changes and these changes do not affect the user configured indirection table. Rebuild RQ table on hfunc change. Fixes: bdfc028de1b3 ("net/mlx5e: Fix ethtool RX hash func configuration change") Signed-off-by: Aya Levin <ayal@mellanox.com> Reviewed-by: Tariq Toukan <tariqt@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Diffstat (limited to 'drivers/net')
-rw-r--r--drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c41
1 files changed, 22 insertions, 19 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c b/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c
index 3ef2525e8de9..ec5658bbe3c5 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c
@@ -1173,7 +1173,8 @@ int mlx5e_set_rxfh(struct net_device *dev, const u32 *indir,
struct mlx5e_priv *priv = netdev_priv(dev);
struct mlx5e_rss_params *rss = &priv->rss_params;
int inlen = MLX5_ST_SZ_BYTES(modify_tir_in);
- bool hash_changed = false;
+ bool refresh_tirs = false;
+ bool refresh_rqt = false;
void *in;
if ((hfunc != ETH_RSS_HASH_NO_CHANGE) &&
@@ -1189,36 +1190,38 @@ int mlx5e_set_rxfh(struct net_device *dev, const u32 *indir,
if (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != rss->hfunc) {
rss->hfunc = hfunc;
- hash_changed = true;
+ refresh_rqt = true;
+ refresh_tirs = true;
}
if (indir) {
memcpy(rss->indirection_rqt, indir,
sizeof(rss->indirection_rqt));
-
- if (test_bit(MLX5E_STATE_OPENED, &priv->state)) {
- u32 rqtn = priv->indir_rqt.rqtn;
- struct mlx5e_redirect_rqt_param rrp = {
- .is_rss = true,
- {
- .rss = {
- .hfunc = rss->hfunc,
- .channels = &priv->channels,
- },
- },
- };
-
- mlx5e_redirect_rqt(priv, rqtn, MLX5E_INDIR_RQT_SIZE, rrp);
- }
+ refresh_rqt = true;
}
if (key) {
memcpy(rss->toeplitz_hash_key, key,
sizeof(rss->toeplitz_hash_key));
- hash_changed = hash_changed || rss->hfunc == ETH_RSS_HASH_TOP;
+ refresh_tirs = refresh_tirs || rss->hfunc == ETH_RSS_HASH_TOP;
+ }
+
+ if (refresh_rqt && test_bit(MLX5E_STATE_OPENED, &priv->state)) {
+ struct mlx5e_redirect_rqt_param rrp = {
+ .is_rss = true,
+ {
+ .rss = {
+ .hfunc = rss->hfunc,
+ .channels = &priv->channels,
+ },
+ },
+ };
+ u32 rqtn = priv->indir_rqt.rqtn;
+
+ mlx5e_redirect_rqt(priv, rqtn, MLX5E_INDIR_RQT_SIZE, rrp);
}
- if (hash_changed)
+ if (refresh_tirs)
mlx5e_modify_tirs_hash(priv, in);
mutex_unlock(&priv->state_lock);