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net/mlx5e: Add PCIe outbound stalls counters

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outbound_pci_stalled_rd - The percentage of time within the last second
that the NIC had outbound non-posted read requests but could not perform
the operation due to insufficient non-posted credits.

outbound_pci_stalled_wr - The percentage of time within the
last second that the NIC had outbound posted writes requests but could
not perform the operation due to insufficient posted credits.

outbound_pci_stalled_rd_events - The number of events where
outbound_pci_stalled_rd was above the threshold.

outbound_pci_stalled_wr_events - The number of events where
outbound_pci_stalled_wr was above the threshold.

Signed-off-by: Gal Pressman <galp@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
This commit is contained in:
Gal Pressman 2017-06-15 18:29:32 +03:00 committed by Saeed Mahameed
parent 5405fa26c2
commit 73e90646a2
2 changed files with 20 additions and 1 deletions
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8
drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c
View File

@ -246,6 +246,10 @@ static void mlx5e_fill_stats_strings(struct mlx5e_priv *priv, uint8_t *data)
strcpy(data + (idx++) * ETH_GSTRING_LEN,
pcie_perf_stats_desc[i].format);
for (i = 0; i < NUM_PCIE_PERF_STALL_COUNTERS(priv); i++)
strcpy(data + (idx++) * ETH_GSTRING_LEN,
pcie_perf_stall_stats_desc[i].format);
for (prio = 0; prio < NUM_PPORT_PRIO; prio++) {
for (i = 0; i < NUM_PPORT_PER_PRIO_TRAFFIC_COUNTERS; i++)
sprintf(data + (idx++) * ETH_GSTRING_LEN,
@ -377,6 +381,10 @@ void mlx5e_ethtool_get_ethtool_stats(struct mlx5e_priv *priv,
data[idx++] = MLX5E_READ_CTR32_BE(&priv->stats.pcie.pcie_perf_counters,
pcie_perf_stats_desc, i);
for (i = 0; i < NUM_PCIE_PERF_STALL_COUNTERS(priv); i++)
data[idx++] = MLX5E_READ_CTR32_BE(&priv->stats.pcie.pcie_perf_counters,
pcie_perf_stall_stats_desc, i);
for (prio = 0; prio < NUM_PPORT_PRIO; prio++) {
for (i = 0; i < NUM_PPORT_PER_PRIO_TRAFFIC_COUNTERS; i++)
data[idx++] = MLX5E_READ_CTR64_BE(&priv->stats.pport.per_prio_counters[prio],

13
drivers/net/ethernet/mellanox/mlx5/core/en_stats.h
View File

@ -305,6 +305,13 @@ static const struct counter_desc pcie_perf_stats_desc[] = {
{ "tx_pci_signal_integrity", PCIE_PERF_OFF(tx_errors) },
};
static const struct counter_desc pcie_perf_stall_stats_desc[] = {
{ "outbound_pci_stalled_rd", PCIE_PERF_OFF(outbound_stalled_reads) },
{ "outbound_pci_stalled_wr", PCIE_PERF_OFF(outbound_stalled_writes) },
{ "outbound_pci_stalled_rd_events", PCIE_PERF_OFF(outbound_stalled_reads_events) },
{ "outbound_pci_stalled_wr_events", PCIE_PERF_OFF(outbound_stalled_writes_events) },
};
struct mlx5e_rq_stats {
u64 packets;
u64 bytes;
@ -397,6 +404,9 @@ static const struct counter_desc sq_stats_desc[] = {
#define NUM_PCIE_PERF_COUNTERS(priv) \
(ARRAY_SIZE(pcie_perf_stats_desc) * \
MLX5_CAP_MCAM_FEATURE((priv)->mdev, pcie_performance_group))
#define NUM_PCIE_PERF_STALL_COUNTERS(priv) \
(ARRAY_SIZE(pcie_perf_stall_stats_desc) * \
MLX5_CAP_MCAM_FEATURE((priv)->mdev, pcie_outbound_stalled))
#define NUM_PPORT_PER_PRIO_TRAFFIC_COUNTERS \
ARRAY_SIZE(pport_per_prio_traffic_stats_desc)
#define NUM_PPORT_PER_PRIO_PFC_COUNTERS \
@ -407,7 +417,8 @@ static const struct counter_desc sq_stats_desc[] = {
NUM_PPORT_PHY_STATISTICAL_COUNTERS(priv) + \
NUM_PPORT_PER_PRIO_TRAFFIC_COUNTERS * \
NUM_PPORT_PRIO)
#define NUM_PCIE_COUNTERS(priv) NUM_PCIE_PERF_COUNTERS(priv)
#define NUM_PCIE_COUNTERS(priv) (NUM_PCIE_PERF_COUNTERS(priv) + \
NUM_PCIE_PERF_STALL_COUNTERS(priv))
#define NUM_RQ_STATS ARRAY_SIZE(rq_stats_desc)
#define NUM_SQ_STATS ARRAY_SIZE(sq_stats_desc)