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Subject[PATCH 4.19 006/142] net/mlx4_core: Correctly set PFC param if global pause is turned off.
Date
4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Tarick Bedeir <tarick@google.com>

[ Upstream commit bd5122cd1e0644d8bd8dd84517c932773e999766 ]

rx_ppp and tx_ppp can be set between 0 and 255, so don't clamp to 1.

Fixes: 6e8814ceb7e8 ("net/mlx4_en: Fix mixed PFC and Global pause user control requests")
Signed-off-by: Tarick Bedeir <tarick@google.com>
Reviewed-by: Eran Ben Elisha <eranbe@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/ethernet/mellanox/mlx4/en_ethtool.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c
@@ -1084,8 +1084,8 @@ static int mlx4_en_set_pauseparam(struct

tx_pause = !!(pause->tx_pause);
rx_pause = !!(pause->rx_pause);
- rx_ppp = priv->prof->rx_ppp && !(tx_pause || rx_pause);
- tx_ppp = priv->prof->tx_ppp && !(tx_pause || rx_pause);
+ rx_ppp = (tx_pause || rx_pause) ? 0 : priv->prof->rx_ppp;
+ tx_ppp = (tx_pause || rx_pause) ? 0 : priv->prof->tx_ppp;

err = mlx4_SET_PORT_general(mdev->dev, priv->port,
priv->rx_skb_size + ETH_FCS_LEN,

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