diff options
| author |   Shalom Lagziel <shaloml@mellanox.com> | 2018-02-12 17:43:07 +0200 |
|---|---|---|
| committer |   Saeed Mahameed <saeedm@mellanox.com> | 2018-05-25 14:11:01 -0700 |
| commit | 868a01a27d80a59e719f0c369d1b26b923fc7674 (patch) | |
| tree | aefd1c9fa55e565eac83f94251da3cb1d16d3fe9 /drivers/net/ethernet/mellanox/mlx5/core/en_stats.c | |
| parent | net/mlx5e: Move phy link down events counter out of SW stats (diff) | |
| download | linux-dev-868a01a27d80a59e719f0c369d1b26b923fc7674.tar.xz linux-dev-868a01a27d80a59e719f0c369d1b26b923fc7674.zip | |
net/mlx5e: Introducing new statistics rwlock
Introduce a new read/write lock that will protect statistics gathering from
netdev channels configuration changes.
e.g. when channels are being replaced (increase/decrease number of rings)
prevent statistic gathering (ndo_get_stats64) to read the statistics of
in-active channels (channels that are being closed).
Plus update channels software statistics on the fly when calling
ndo_get_stats64, and remove it from stats periodic work.
Fixes: 9218b44dcc05 ("net/mlx5e: Statistics handling refactoring")
Signed-off-by: Shalom Lagziel <shaloml@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlx5/core/en_stats.c')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx5/core/en_stats.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_stats.c b/drivers/net/ethernet/mellanox/mlx5/core/en_stats.c index 973939ed8bb5..323f2af4200b 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_stats.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_stats.c @@ -108,7 +108,7 @@ static int mlx5e_grp_sw_fill_stats(struct mlx5e_priv *priv, u64 *data, int idx) return idx; } -static void mlx5e_grp_sw_update_stats(struct mlx5e_priv *priv) +void mlx5e_grp_sw_update_stats(struct mlx5e_priv *priv) { struct mlx5e_sw_stats temp, *s = &temp; struct mlx5e_rq_stats *rq_stats; @@ -117,6 +117,9 @@ static void mlx5e_grp_sw_update_stats(struct mlx5e_priv *priv) int i, j; memset(s, 0, sizeof(*s)); + read_lock(&priv->stats_lock); + if (!priv->channels_active) + goto out; for (i = 0; i < priv->channels.num; i++) { struct mlx5e_channel *c = priv->channels.c[i]; @@ -175,6 +178,8 @@ static void mlx5e_grp_sw_update_stats(struct mlx5e_priv *priv) } memcpy(&priv->stats.sw, s, sizeof(*s)); +out: + read_unlock(&priv->stats_lock); } static const struct counter_desc q_stats_desc[] = { @@ -1224,7 +1229,6 @@ const struct mlx5e_stats_grp mlx5e_stats_grps[] = { .get_num_stats = mlx5e_grp_sw_get_num_stats, .fill_strings = mlx5e_grp_sw_fill_strings, .fill_stats = mlx5e_grp_sw_fill_stats, - .update_stats_mask = MLX5E_NDO_UPDATE_STATS, .update_stats = mlx5e_grp_sw_update_stats, }, { |