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net/mlx5e: Present SW stats when state is not opened

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The driver can present all SW stats even when the state not opened.
Fixed get strings, count and stats to support it.

In addition, fix tc2txq to hold a static mapping which doesn't depend on
the amount of open channels, and cannot have the same value on two
different cells  while moving between configurations.
Example:
- OOB 16 channels
- Change to 2 channels, 8 TCs
- tc2txq[15][0] == tc2txq[1][7] == 15
This will cause multiple appearances of the same TX index in statistics
output.

Fixes: 76c3810bade3 ("net/mlx5e: Avoid reset netdev stats on configuration changes")
Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
This commit is contained in:
Eran Ben Elisha 2018-05-29 10:54:47 +03:00 committed by Saeed Mahameed
parent c90262f846
commit 8bfaf07f78
2 changed files with 13 additions and 16 deletions
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19
drivers/net/ethernet/mellanox/mlx5/core/en_main.c
View File

@ -2633,16 +2633,22 @@ static void mlx5e_netdev_set_tcs(struct net_device *netdev)
netdev_set_tc_queue(netdev, tc, nch, 0);
}
static void mlx5e_build_channels_tx_maps(struct mlx5e_priv *priv)
static void mlx5e_build_tc2txq_maps(struct mlx5e_priv *priv)
{
int max_nch = priv->profile->max_nch(priv->mdev);
int i, tc;
for (i = 0; i < max_nch; i++)
for (tc = 0; tc < priv->profile->max_tc; tc++)
priv->channel_tc2txq[i][tc] = i + tc * max_nch;
}
static void mlx5e_build_tx2sq_maps(struct mlx5e_priv *priv)
{
struct mlx5e_channel *c;
struct mlx5e_txqsq *sq;
int i, tc;
for (i = 0; i < priv->profile->max_nch(priv->mdev); i++)
for (tc = 0; tc < priv->profile->max_tc; tc++)
priv->channel_tc2txq[i][tc] = i + tc * priv->channels.num;
for (i = 0; i < priv->channels.num; i++) {
c = priv->channels.c[i];
for (tc = 0; tc < c->num_tc; tc++) {
@ -2661,7 +2667,7 @@ void mlx5e_activate_priv_channels(struct mlx5e_priv *priv)
netif_set_real_num_tx_queues(netdev, num_txqs);
netif_set_real_num_rx_queues(netdev, priv->channels.num);
mlx5e_build_channels_tx_maps(priv);
mlx5e_build_tx2sq_maps(priv);
mlx5e_activate_channels(&priv->channels);
write_lock(&priv->stats_lock);
priv->channels_active = true;
@ -4446,6 +4452,7 @@ static void mlx5e_nic_init(struct mlx5_core_dev *mdev,
if (err)
mlx5_core_err(mdev, "TLS initialization failed, %d\n", err);
mlx5e_build_nic_netdev(netdev);
mlx5e_build_tc2txq_maps(priv);
mlx5e_vxlan_init(priv);
}

10
drivers/net/ethernet/mellanox/mlx5/core/en_stats.c
View File

@ -1161,9 +1161,6 @@ static int mlx5e_grp_channels_get_num_stats(struct mlx5e_priv *priv)
{
int max_nch = priv->profile->max_nch(priv->mdev);
if (!test_bit(MLX5E_STATE_OPENED, &priv->state))
return 0;
return (NUM_RQ_STATS * max_nch) +
(NUM_CH_STATS * max_nch) +
(NUM_SQ_STATS * max_nch * priv->max_opened_tc);
@ -1175,9 +1172,6 @@ static int mlx5e_grp_channels_fill_strings(struct mlx5e_priv *priv, u8 *data,
int max_nch = priv->profile->max_nch(priv->mdev);
int i, j, tc;
if (!test_bit(MLX5E_STATE_OPENED, &priv->state))
return idx;
for (i = 0; i < max_nch; i++)
for (j = 0; j < NUM_CH_STATS; j++)
sprintf(data + (idx++) * ETH_GSTRING_LEN,
@ -1187,7 +1181,6 @@ static int mlx5e_grp_channels_fill_strings(struct mlx5e_priv *priv, u8 *data,
for (j = 0; j < NUM_RQ_STATS; j++)
sprintf(data + (idx++) * ETH_GSTRING_LEN, rq_stats_desc[j].format, i);
/* priv->channel_tc2txq[i][tc] is valid only when device is open */
for (tc = 0; tc < priv->max_opened_tc; tc++)
for (i = 0; i < max_nch; i++)
for (j = 0; j < NUM_SQ_STATS; j++)
@ -1204,9 +1197,6 @@ static int mlx5e_grp_channels_fill_stats(struct mlx5e_priv *priv, u64 *data,
int max_nch = priv->profile->max_nch(priv->mdev);
int i, j, tc;
if (!test_bit(MLX5E_STATE_OPENED, &priv->state))
return idx;
for (i = 0; i < max_nch; i++)
for (j = 0; j < NUM_CH_STATS; j++)
data[idx++] =