From: Aharon Landau <aharonl@mellanox.com>
Date: Mon, 16 Dec 2019 12:50:13 +0200
Subject: net/mlx5e: Add discard counters per priority
Patch-mainline: v5.6-rc1
Git-commit: 827a8cb2dd2b72848652b2a425bba3262808ff44
References: jsc#SLE-8464
Add counters that count (per priority) the number of received
packets that dropped due to lack of buffers on a physical port. If
this counter is increasing, it implies that the adapter is
congested and cannot absorb the traffic coming from the network.
Signed-off-by: Aharon Landau <aharonl@mellanox.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
drivers/net/ethernet/mellanox/mlx5/core/en_stats.c | 1 +
include/linux/mlx5/mlx5_ifc.h | 4 +++-
2 files changed, 4 insertions(+), 1 deletion(-)
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_stats.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_stats.c
@@ -1133,6 +1133,7 @@ static void mlx5e_grp_per_port_buffer_co
static const struct counter_desc pport_per_prio_traffic_stats_desc[] = {
{ "rx_prio%d_bytes", PPORT_PER_PRIO_OFF(rx_octets) },
{ "rx_prio%d_packets", PPORT_PER_PRIO_OFF(rx_frames) },
+ { "rx_prio%d_discards", PPORT_PER_PRIO_OFF(rx_discards) },
{ "tx_prio%d_bytes", PPORT_PER_PRIO_OFF(tx_octets) },
{ "tx_prio%d_packets", PPORT_PER_PRIO_OFF(tx_frames) },
};
--- a/include/linux/mlx5/mlx5_ifc.h
+++ b/include/linux/mlx5/mlx5_ifc.h
@@ -2180,7 +2180,9 @@ struct mlx5_ifc_eth_per_prio_grp_data_la
u8 rx_pause_transition_low[0x20];
- u8 reserved_at_3c0[0x40];
+ u8 rx_discards_high[0x20];
+
+ u8 rx_discards_low[0x20];
u8 device_stall_minor_watermark_cnt_high[0x20];