From 121fcdc84d8240d4dfe1f737befd5814b12623ee Mon Sep 17 00:00:00 2001 From: Gal Pressman Date: Sun, 24 Apr 2016 22:51:50 +0300 Subject: [PATCH] net/mlx5e: Add link down events counter Expose link_down_events counter through ethtool -S. This counter is read from PPort statistics, then proccessed and stored as a special handling software counter. This counter is stored along software counters since it is the only PPort counter that it's size is not 64 bits. Signed-off-by: Gal Pressman Signed-off-by: Saeed Mahameed Signed-off-by: David S. Miller --- drivers/net/ethernet/mellanox/mlx5/core/en_main.c | 10 +++++++++- drivers/net/ethernet/mellanox/mlx5/core/en_stats.h | 5 +++++ include/linux/mlx5/device.h | 1 + 3 files changed, 15 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c index ef66ba6..61e261c 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c @@ -135,6 +135,10 @@ static void mlx5e_update_sw_counters(struct mlx5e_priv *priv) s->tx_csum_offload = s->tx_packets - tx_offload_none - s->tx_csum_inner; s->rx_csum_good = s->rx_packets - s->rx_csum_none - s->rx_csum_sw; + + s->link_down_events = MLX5_GET(ppcnt_reg, + priv->stats.pport.phy_counters, + counter_set.phys_layer_cntrs.link_down_events); } static void mlx5e_update_vport_counters(struct mlx5e_priv *priv) @@ -183,6 +187,10 @@ static void mlx5e_update_pport_counters(struct mlx5e_priv *priv) MLX5_SET(ppcnt_reg, in, grp, MLX5_RFC_2819_COUNTERS_GROUP); mlx5_core_access_reg(mdev, in, sz, out, sz, MLX5_REG_PPCNT, 0, 0); + out = pstats->phy_counters; + MLX5_SET(ppcnt_reg, in, grp, MLX5_PHYSICAL_LAYER_COUNTERS_GROUP); + mlx5_core_access_reg(mdev, in, sz, out, sz, MLX5_REG_PPCNT, 0, 0); + MLX5_SET(ppcnt_reg, in, grp, MLX5_PER_PRIORITY_COUNTERS_GROUP); for (prio = 0; prio < NUM_PPORT_PRIO; prio++) { out = pstats->per_prio_counters[prio]; @@ -208,10 +216,10 @@ static void mlx5e_update_q_counter(struct mlx5e_priv *priv) void mlx5e_update_stats(struct mlx5e_priv *priv) { - mlx5e_update_sw_counters(priv); mlx5e_update_q_counter(priv); mlx5e_update_vport_counters(priv); mlx5e_update_pport_counters(priv); + mlx5e_update_sw_counters(priv); } static void mlx5e_update_stats_work(struct work_struct *work) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_stats.h b/drivers/net/ethernet/mellanox/mlx5/core/en_stats.h index de27eea..7cd8cb4 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_stats.h +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_stats.h @@ -71,6 +71,9 @@ struct mlx5e_sw_stats { u64 rx_mpwqe_filler; u64 rx_mpwqe_frag; u64 rx_buff_alloc_err; + + /* Special handling counters */ + u64 link_down_events; }; static const struct counter_desc sw_stats_desc[] = { @@ -96,6 +99,7 @@ static const struct counter_desc sw_stats_desc[] = { { MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, rx_mpwqe_filler) }, { MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, rx_mpwqe_frag) }, { MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, rx_buff_alloc_err) }, + { MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, link_down_events) }, }; struct mlx5e_qcounter_stats { @@ -178,6 +182,7 @@ struct mlx5e_pport_stats { __be64 RFC_2863_counters[MLX5_ST_SZ_QW(ppcnt_reg)]; __be64 RFC_2819_counters[MLX5_ST_SZ_QW(ppcnt_reg)]; __be64 per_prio_counters[NUM_PPORT_PRIO][MLX5_ST_SZ_QW(ppcnt_reg)]; + __be64 phy_counters[MLX5_ST_SZ_QW(ppcnt_reg)]; }; static const struct counter_desc pport_802_3_stats_desc[] = { diff --git a/include/linux/mlx5/device.h b/include/linux/mlx5/device.h index 8be44ca..942bcca 100644 --- a/include/linux/mlx5/device.h +++ b/include/linux/mlx5/device.h @@ -1369,6 +1369,7 @@ enum { MLX5_ETHERNET_EXTENDED_COUNTERS_GROUP = 0x5, MLX5_PER_PRIORITY_COUNTERS_GROUP = 0x10, MLX5_PER_TRAFFIC_CLASS_COUNTERS_GROUP = 0x11, + MLX5_PHYSICAL_LAYER_COUNTERS_GROUP = 0x12, MLX5_INFINIBAND_PORT_COUNTERS_GROUP = 0x20, }; -- 2.7.4