This is a note to let you know that I've just added the patch titled
net/mlx5e: Correctly report errors for ethtool rx flows
to the 4.19-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
net-mlx5e-correctly-report-errors-for-ethtool-rx-flo.patch
and it can be found in the queue-4.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 6293d367e45158dcbe908acc2800d00bb3f9786c
Author: Cosmin Ratiu <cratiu@xxxxxxxxxx>
Date: Thu Aug 8 17:41:05 2024 +0300
net/mlx5e: Correctly report errors for ethtool rx flows
[ Upstream commit cbc796be1779c4dbc9a482c7233995e2a8b6bfb3 ]
Previously, an ethtool rx flow with no attrs would not be added to the
NIC as it has no rules to configure the hw with, but it would be
reported as successful to the caller (return code 0). This is confusing
for the user as ethtool then reports "Added rule $num", but no rule was
actually added.
This change corrects that by instead reporting these wrong rules as
-EINVAL.
Fixes: b29c61dac3a2 ("net/mlx5e: Ethtool steering flow validation refactoring")
Signed-off-by: Cosmin Ratiu <cratiu@xxxxxxxxxx>
Reviewed-by: Saeed Mahameed <saeedm@xxxxxxxxxx>
Reviewed-by: Dragos Tatulea <dtatulea@xxxxxxxxxx>
Signed-off-by: Tariq Toukan <tariqt@xxxxxxxxxx>
Link: https://patch.msgid.link/20240808144107.2095424-5-tariqt@xxxxxxxxxx
Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_fs_ethtool.c b/drivers/net/ethernet/mellanox/mlx5/core/en_fs_ethtool.c
index 41cde926cdab6..48ae9c201af46 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_fs_ethtool.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_fs_ethtool.c
@@ -689,7 +689,7 @@ mlx5e_ethtool_flow_replace(struct mlx5e_priv *priv,
if (num_tuples <= 0) {
netdev_warn(priv->netdev, "%s: flow is not valid %d\n",
__func__, num_tuples);
- return num_tuples;
+ return num_tuples < 0 ? num_tuples : -EINVAL;
}
eth_ft = get_flow_table(priv, fs, num_tuples);
