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net/mlx5e: Expose flow control counters to ethtool

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Just like per prio counters, the global flow counters are queried from
per priority counters register.
Global flow control counters are stored in priority 0 PFC counters.

Signed-off-by: Gal Pressman <galp@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Gal Pressman 2016-07-04 17:23:12 +03:00 committed by David S. Miller
parent fe6b9bd9eb
commit e989d5a532
2 changed files with 38 additions and 8 deletions
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35
drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c
View File

@ -139,6 +139,18 @@ static unsigned long mlx5e_query_pfc_combined(struct mlx5e_priv *priv)
return err ? 0 : pfc_en_tx | pfc_en_rx;
}
static bool mlx5e_query_global_pause_combined(struct mlx5e_priv *priv)
{
struct mlx5_core_dev *mdev = priv->mdev;
u32 rx_pause;
u32 tx_pause;
int err;
err = mlx5_query_port_pause(mdev, &rx_pause, &tx_pause);
return err ? false : rx_pause | tx_pause;
}
#define MLX5E_NUM_Q_CNTRS(priv) (NUM_Q_COUNTERS * (!!priv->q_counter))
#define MLX5E_NUM_RQ_STATS(priv) \
(NUM_RQ_STATS * priv->params.num_channels * \
@ -147,8 +159,8 @@ static unsigned long mlx5e_query_pfc_combined(struct mlx5e_priv *priv)
(NUM_SQ_STATS * priv->params.num_channels * priv->params.num_tc * \
test_bit(MLX5E_STATE_OPENED, &priv->state))
#define MLX5E_NUM_PFC_COUNTERS(priv) \
(hweight8(mlx5e_query_pfc_combined(priv)) * \
NUM_PPORT_PER_PRIO_PFC_COUNTERS)
((mlx5e_query_global_pause_combined(priv) + hweight8(mlx5e_query_pfc_combined(priv))) * \
NUM_PPORT_PER_PRIO_PFC_COUNTERS)
static int mlx5e_get_sset_count(struct net_device *dev, int sset)
{
@ -210,8 +222,18 @@ static void mlx5e_fill_stats_strings(struct mlx5e_priv *priv, uint8_t *data)
pfc_combined = mlx5e_query_pfc_combined(priv);
for_each_set_bit(prio, &pfc_combined, NUM_PPORT_PRIO) {
for (i = 0; i < NUM_PPORT_PER_PRIO_PFC_COUNTERS; i++) {
char pfc_string[ETH_GSTRING_LEN];
snprintf(pfc_string, sizeof(pfc_string), "prio%d", prio);
sprintf(data + (idx++) * ETH_GSTRING_LEN,
pport_per_prio_pfc_stats_desc[i].format, prio);
pport_per_prio_pfc_stats_desc[i].format, pfc_string);
}
}
if (mlx5e_query_global_pause_combined(priv)) {
for (i = 0; i < NUM_PPORT_PER_PRIO_PFC_COUNTERS; i++) {
sprintf(data + (idx++) * ETH_GSTRING_LEN,
pport_per_prio_pfc_stats_desc[i].format, "global");
}
}
@ -306,6 +328,13 @@ static void mlx5e_get_ethtool_stats(struct net_device *dev,
}
}
if (mlx5e_query_global_pause_combined(priv)) {
for (i = 0; i < NUM_PPORT_PER_PRIO_PFC_COUNTERS; i++) {
data[idx++] = MLX5E_READ_CTR64_BE(&priv->stats.pport.per_prio_counters[0],
pport_per_prio_pfc_stats_desc, 0);
}
}
if (!test_bit(MLX5E_STATE_OPENED, &priv->state))
return;

11
drivers/net/ethernet/mellanox/mlx5/core/en_stats.h
View File

@ -254,11 +254,12 @@ static const struct counter_desc pport_per_prio_traffic_stats_desc[] = {
};
static const struct counter_desc pport_per_prio_pfc_stats_desc[] = {
{ "rx_prio%d_pause", PPORT_PER_PRIO_OFF(rx_pause) },
{ "rx_prio%d_pause_duration", PPORT_PER_PRIO_OFF(rx_pause_duration) },
{ "tx_prio%d_pause", PPORT_PER_PRIO_OFF(tx_pause) },
{ "tx_prio%d_pause_duration", PPORT_PER_PRIO_OFF(tx_pause_duration) },
{ "rx_prio%d_pause_transition", PPORT_PER_PRIO_OFF(rx_pause_transition) },
/* %s is "global" or "prio{i}" */
{ "rx_%s_pause", PPORT_PER_PRIO_OFF(rx_pause) },
{ "rx_%s_pause_duration", PPORT_PER_PRIO_OFF(rx_pause_duration) },
{ "tx_%s_pause", PPORT_PER_PRIO_OFF(tx_pause) },
{ "tx_%s_pause_duration", PPORT_PER_PRIO_OFF(tx_pause_duration) },
{ "rx_%s_pause_transition", PPORT_PER_PRIO_OFF(rx_pause_transition) },
};
struct mlx5e_rq_stats {