Patch "net/mlx4_en: Count HW buffer overrun only once" has been added to the 4.4-stable tree

This is a note to let you know that I've just added the patch titled

net/mlx4_en: Count HW buffer overrun only once

to the 4.4-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-mlx4_en-count-hw-buffer-overrun-only-once.patch
and it can be found in the queue-4.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Amir Vadai <[email protected]>
Date: Wed, 17 Feb 2016 17:24:22 +0200
Subject: net/mlx4_en: Count HW buffer overrun only once

From: Amir Vadai <[email protected]>

[ Upstream commit 281e8b2fdf8e4ef366b899453cae50e09b577ada ]

RdropOvflw counts overrun of HW buffer, therefore should be used for rx_fifo_errors only.

Currently RdropOvflw counter is mistakenly also set into rx_missed_errors and rx_over_errors too, which makes the device total dropped packets accounting to show wrong results.

Fix that. Use it for rx_fifo_errors only.

---
 drivers/net/ethernet/mellanox/mlx4/en_port.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

@@ -238,11 +238,11 @@ int mlx4_en_DUMP_ETH_STATS(struct mlx4_e
 	stats->collisions = 0;
 	stats->rx_dropped = be32_to_cpu(mlx4_en_stats->RDROP);
 	stats->rx_length_errors = be32_to_cpu(mlx4_en_stats->RdropLength);
-	stats->rx_over_errors = be32_to_cpu(mlx4_en_stats->RdropOvflw);
+	stats->rx_over_errors = 0;
 	stats->rx_crc_errors = be32_to_cpu(mlx4_en_stats->RCRC);
 	stats->rx_frame_errors = 0;
 	stats->rx_fifo_errors = be32_to_cpu(mlx4_en_stats->RdropOvflw);
-	stats->rx_missed_errors = be32_to_cpu(mlx4_en_stats->RdropOvflw);
+	stats->rx_missed_errors = 0;
 	stats->tx_aborted_errors = 0;
 	stats->tx_carrier_errors = 0;
 	stats->tx_fifo_errors = 0;

Patches currently in stable-queue which might be from [email protected] are

queue-4.4/net-mlx4_en-count-hw-buffer-overrun-only-once.patch