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Subject[PATCH 5.4 32/37] net/mlx5e: ethtool, Fix analysis of speed setting
Date
From: Aya Levin <ayal@mellanox.com>

[ Upstream commit 3d7cadae51f1b7f28358e36d0a1ce3f0ae2eee60 ]

When setting speed to 100G via ethtool (AN is set to off), only 25G*4 is
configured while the user, who has an advanced HW which supports
extended PTYS, expects also 50G*2 to be configured.
With this patch, when extended PTYS mode is available, configure
PTYS via extended fields.

Fixes: 4b95840a6ced ("net/mlx5e: Fix matching of speed to PRM link modes")
Signed-off-by: Aya Levin <ayal@mellanox.com>
Reviewed-by: Eran Ben Elisha <eranbe@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c | 13 +++----------
1 file changed, 3 insertions(+), 10 deletions(-)

--- a/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c
@@ -1027,18 +1027,11 @@ static bool ext_link_mode_requested(cons
return bitmap_intersects(modes, adver, __ETHTOOL_LINK_MODE_MASK_NBITS);
}

-static bool ext_speed_requested(u32 speed)
-{
-#define MLX5E_MAX_PTYS_LEGACY_SPEED 100000
- return !!(speed > MLX5E_MAX_PTYS_LEGACY_SPEED);
-}
-
-static bool ext_requested(u8 autoneg, const unsigned long *adver, u32 speed)
+static bool ext_requested(u8 autoneg, const unsigned long *adver, bool ext_supported)
{
bool ext_link_mode = ext_link_mode_requested(adver);
- bool ext_speed = ext_speed_requested(speed);

- return autoneg == AUTONEG_ENABLE ? ext_link_mode : ext_speed;
+ return autoneg == AUTONEG_ENABLE ? ext_link_mode : ext_supported;
}

int mlx5e_ethtool_set_link_ksettings(struct mlx5e_priv *priv,
@@ -1065,8 +1058,8 @@ int mlx5e_ethtool_set_link_ksettings(str
autoneg = link_ksettings->base.autoneg;
speed = link_ksettings->base.speed;

- ext = ext_requested(autoneg, adver, speed),
ext_supported = MLX5_CAP_PCAM_FEATURE(mdev, ptys_extended_ethernet);
+ ext = ext_requested(autoneg, adver, ext_supported);
if (!ext_supported && ext)
return -EOPNOTSUPP;


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