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net/mlx5e: Add interface down dropped packets statistics

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Added the following packets drop counter:
Rx interface down dropped packets - counts packets which were received
while the ETH interface was down.
This counter will be shown on ethtool as a new counter called
rx_if_down_packets.

The implementation allocates a q_counter for drop rq which gets all the
received traffic while the interface is down.

Signed-off-by: Moshe Shemesh <moshe@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
This commit is contained in:
Moshe Shemesh 2018-02-08 15:09:57 +02:00 committed by Saeed Mahameed
parent aaabd0783b
commit 7cbaf9a3ea
4 changed files with 69 additions and 29 deletions
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3
drivers/net/ethernet/mellanox/mlx5/core/en.h
View File

@ -781,7 +781,8 @@ struct mlx5e_priv {
struct net_device *netdev;
struct mlx5e_stats stats;
struct hwtstamp_config tstamp;
u16 q_counter;
u16 q_counter;
u16 drop_rq_q_counter;
#ifdef CONFIG_MLX5_CORE_EN_DCB
struct mlx5e_dcbx dcbx;
#endif

46
drivers/net/ethernet/mellanox/mlx5/core/en_main.c
View File

@ -615,8 +615,7 @@ static int mlx5e_create_rq(struct mlx5e_rq *rq,
static int mlx5e_modify_rq_state(struct mlx5e_rq *rq, int curr_state,
int next_state)
{
struct mlx5e_channel *c = rq->channel;
struct mlx5_core_dev *mdev = c->mdev;
struct mlx5_core_dev *mdev = rq->mdev;
void *in;
void *rqc;
@ -1768,14 +1767,16 @@ static void mlx5e_build_rq_param(struct mlx5e_priv *priv,
param->wq.linear = 1;
}
static void mlx5e_build_drop_rq_param(struct mlx5_core_dev *mdev,
static void mlx5e_build_drop_rq_param(struct mlx5e_priv *priv,
struct mlx5e_rq_param *param)
{
struct mlx5_core_dev *mdev = priv->mdev;
void *rqc = param->rqc;
void *wq = MLX5_ADDR_OF(rqc, rqc, wq);
MLX5_SET(wq, wq, wq_type, MLX5_WQ_TYPE_LINKED_LIST);
MLX5_SET(wq, wq, log_wq_stride, ilog2(sizeof(struct mlx5e_rx_wqe)));
MLX5_SET(rqc, rqc, counter_set_id, priv->drop_rq_q_counter);
param->wq.buf_numa_node = dev_to_node(&mdev->pdev->dev);
}
@ -2643,15 +2644,16 @@ static int mlx5e_alloc_drop_cq(struct mlx5_core_dev *mdev,
return mlx5e_alloc_cq_common(mdev, param, cq);
}
static int mlx5e_open_drop_rq(struct mlx5_core_dev *mdev,
static int mlx5e_open_drop_rq(struct mlx5e_priv *priv,
struct mlx5e_rq *drop_rq)
{
struct mlx5_core_dev *mdev = priv->mdev;
struct mlx5e_cq_param cq_param = {};
struct mlx5e_rq_param rq_param = {};
struct mlx5e_cq *cq = &drop_rq->cq;
int err;
mlx5e_build_drop_rq_param(mdev, &rq_param);
mlx5e_build_drop_rq_param(priv, &rq_param);
err = mlx5e_alloc_drop_cq(mdev, cq, &cq_param);
if (err)
@ -2669,6 +2671,10 @@ static int mlx5e_open_drop_rq(struct mlx5_core_dev *mdev,
if (err)
goto err_free_rq;
err = mlx5e_modify_rq_state(drop_rq, MLX5_RQC_STATE_RST, MLX5_RQC_STATE_RDY);
if (err)
mlx5_core_warn(priv->mdev, "modify_rq_state failed, rx_if_down_packets won't be counted %d\n", err);
return 0;
err_free_rq:
@ -4183,7 +4189,7 @@ static void mlx5e_build_nic_netdev(struct net_device *netdev)
mlx5e_ipsec_build_netdev(priv);
}
static void mlx5e_create_q_counter(struct mlx5e_priv *priv)
static void mlx5e_create_q_counters(struct mlx5e_priv *priv)
{
struct mlx5_core_dev *mdev = priv->mdev;
int err;
@ -4193,14 +4199,21 @@ static void mlx5e_create_q_counter(struct mlx5e_priv *priv)
mlx5_core_warn(mdev, "alloc queue counter failed, %d\n", err);
priv->q_counter = 0;
}
err = mlx5_core_alloc_q_counter(mdev, &priv->drop_rq_q_counter);
if (err) {
mlx5_core_warn(mdev, "alloc drop RQ counter failed, %d\n", err);
priv->drop_rq_q_counter = 0;
}
}
static void mlx5e_destroy_q_counter(struct mlx5e_priv *priv)
static void mlx5e_destroy_q_counters(struct mlx5e_priv *priv)
{
if (!priv->q_counter)
return;
if (priv->q_counter)
mlx5_core_dealloc_q_counter(priv->mdev, priv->q_counter);
mlx5_core_dealloc_q_counter(priv->mdev, priv->q_counter);
if (priv->drop_rq_q_counter)
mlx5_core_dealloc_q_counter(priv->mdev, priv->drop_rq_q_counter);
}
static void mlx5e_nic_init(struct mlx5_core_dev *mdev,
@ -4439,18 +4452,18 @@ int mlx5e_attach_netdev(struct mlx5e_priv *priv)
if (err)
goto out;
err = mlx5e_open_drop_rq(mdev, &priv->drop_rq);
mlx5e_create_q_counters(priv);
err = mlx5e_open_drop_rq(priv, &priv->drop_rq);
if (err) {
mlx5_core_err(mdev, "open drop rq failed, %d\n", err);
goto err_cleanup_tx;
goto err_destroy_q_counters;
}
err = profile->init_rx(priv);
if (err)
goto err_close_drop_rq;
mlx5e_create_q_counter(priv);
if (profile->enable)
profile->enable(priv);
@ -4459,7 +4472,8 @@ int mlx5e_attach_netdev(struct mlx5e_priv *priv)
err_close_drop_rq:
mlx5e_close_drop_rq(&priv->drop_rq);
err_cleanup_tx:
err_destroy_q_counters:
mlx5e_destroy_q_counters(priv);
profile->cleanup_tx(priv);
out:
@ -4476,9 +4490,9 @@ void mlx5e_detach_netdev(struct mlx5e_priv *priv)
profile->disable(priv);
flush_workqueue(priv->wq);
mlx5e_destroy_q_counter(priv);
profile->cleanup_rx(priv);
mlx5e_close_drop_rq(&priv->drop_rq);
mlx5e_destroy_q_counters(priv);
profile->cleanup_tx(priv);
cancel_delayed_work_sync(&priv->update_stats_work);
}

48
drivers/net/ethernet/mellanox/mlx5/core/en_stats.c
View File

@ -170,11 +170,24 @@ static const struct counter_desc q_stats_desc[] = {
{ MLX5E_DECLARE_STAT(struct mlx5e_qcounter_stats, rx_out_of_buffer) },
};
static const struct counter_desc drop_rq_stats_desc[] = {
{ MLX5E_DECLARE_STAT(struct mlx5e_qcounter_stats, rx_if_down_packets) },
};
#define NUM_Q_COUNTERS ARRAY_SIZE(q_stats_desc)
#define NUM_DROP_RQ_COUNTERS ARRAY_SIZE(drop_rq_stats_desc)
static int mlx5e_grp_q_get_num_stats(struct mlx5e_priv *priv)
{
return priv->q_counter ? NUM_Q_COUNTERS : 0;
int num_stats = 0;
if (priv->q_counter)
num_stats += NUM_Q_COUNTERS;
if (priv->drop_rq_q_counter)
num_stats += NUM_DROP_RQ_COUNTERS;
return num_stats;
}
static int mlx5e_grp_q_fill_strings(struct mlx5e_priv *priv, u8 *data, int idx)
@ -182,7 +195,13 @@ static int mlx5e_grp_q_fill_strings(struct mlx5e_priv *priv, u8 *data, int idx)
int i;
for (i = 0; i < NUM_Q_COUNTERS && priv->q_counter; i++)
strcpy(data + (idx++) * ETH_GSTRING_LEN, q_stats_desc[i].format);
strcpy(data + (idx++) * ETH_GSTRING_LEN,
q_stats_desc[i].format);
for (i = 0; i < NUM_DROP_RQ_COUNTERS && priv->drop_rq_q_counter; i++)
strcpy(data + (idx++) * ETH_GSTRING_LEN,
drop_rq_stats_desc[i].format);
return idx;
}
@ -191,7 +210,11 @@ static int mlx5e_grp_q_fill_stats(struct mlx5e_priv *priv, u64 *data, int idx)
int i;
for (i = 0; i < NUM_Q_COUNTERS && priv->q_counter; i++)
data[idx++] = MLX5E_READ_CTR32_CPU(&priv->stats.qcnt, q_stats_desc, i);
data[idx++] = MLX5E_READ_CTR32_CPU(&priv->stats.qcnt,
q_stats_desc, i);
for (i = 0; i < NUM_DROP_RQ_COUNTERS && priv->drop_rq_q_counter; i++)
data[idx++] = MLX5E_READ_CTR32_CPU(&priv->stats.qcnt,
drop_rq_stats_desc, i);
return idx;
}
@ -199,16 +222,17 @@ static void mlx5e_grp_q_update_stats(struct mlx5e_priv *priv)
{
struct mlx5e_qcounter_stats *qcnt = &priv->stats.qcnt;
u32 out[MLX5_ST_SZ_DW(query_q_counter_out)];
int err;
if (!priv->q_counter)
return;
err = mlx5_core_query_q_counter(priv->mdev, priv->q_counter, 0, out, sizeof(out));
if (err)
return;
qcnt->rx_out_of_buffer = MLX5_GET(query_q_counter_out, out, out_of_buffer);
if (priv->q_counter &&
!mlx5_core_query_q_counter(priv->mdev, priv->q_counter, 0, out,
sizeof(out)))
qcnt->rx_out_of_buffer = MLX5_GET(query_q_counter_out,
out, out_of_buffer);
if (priv->drop_rq_q_counter &&
!mlx5_core_query_q_counter(priv->mdev, priv->drop_rq_q_counter, 0,
out, sizeof(out)))
qcnt->rx_if_down_packets = MLX5_GET(query_q_counter_out, out,
out_of_buffer);
}
#define VNIC_ENV_OFF(c) MLX5_BYTE_OFF(query_vnic_env_out, c)

1
drivers/net/ethernet/mellanox/mlx5/core/en_stats.h
View File

@ -97,6 +97,7 @@ struct mlx5e_sw_stats {
struct mlx5e_qcounter_stats {
u32 rx_out_of_buffer;
u32 rx_if_down_packets;
};
struct mlx5e_vnic_env_stats {