5.4-stable review patch. If anyone has any objections, please let me know.
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From: Alexei Lazar alazar@nvidia.com
[ Upstream commit aca0c31af61e0d5cf1675a0cbd29460b95ae693c ]
The local Xoff value is being set before the firmware (FW) update. In case of a failure where the FW is not updated with the new value, there is no fallback to the previous value. Update the local Xoff value after the FW has been successfully set.
Fixes: 0696d60853d5 ("net/mlx5e: Receive buffer configuration") Signed-off-by: Alexei Lazar alazar@nvidia.com Reviewed-by: Tariq Toukan tariqt@nvidia.com Reviewed-by: Dragos Tatulea dtatulea@nvidia.com Signed-off-by: Mark Bloch mbloch@nvidia.com Link: https://patch.msgid.link/20250825143435.598584-12-mbloch@nvidia.com Signed-off-by: Jakub Kicinski kuba@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/ethernet/mellanox/mlx5/core/en/port_buffer.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/port_buffer.c b/drivers/net/ethernet/mellanox/mlx5/core/en/port_buffer.c index 99c7cdd0404a5..44d3d6826f696 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en/port_buffer.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en/port_buffer.c @@ -341,7 +341,6 @@ int mlx5e_port_manual_buffer_config(struct mlx5e_priv *priv, if (err) return err; } - priv->dcbx.xoff = xoff;
/* Apply the settings */ if (update_buffer) { @@ -350,6 +349,8 @@ int mlx5e_port_manual_buffer_config(struct mlx5e_priv *priv, return err; }
+ priv->dcbx.xoff = xoff; + if (update_prio2buffer) err = mlx5e_port_set_priority2buffer(priv->mdev, prio2buffer);