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mlx4: add pause frame stats

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Check if the pause stats are reported by HW by checking the bitmap.
Calculation is based on the order of strings in main_strings from
ethtool -S. Hopefully the semantics of these stats match the standard..

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Reviewed-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jakub Kicinski 2020-09-14 17:11:59 -07:00 • committed by David S. Miller
parent 098d9ed9ef
commit 12d342fea1
2 changed files with 31 additions and 0 deletions
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19
drivers/net/ethernet/mellanox/mlx4/en_ethtool.c
View file

@ -1106,6 +1106,24 @@ static int mlx4_en_set_pauseparam(struct net_device *dev,
return err;
}
static void mlx4_en_get_pause_stats(struct net_device *dev,
struct ethtool_pause_stats *stats)
{
struct mlx4_en_priv *priv = netdev_priv(dev);
struct bitmap_iterator it;
bitmap_iterator_init(&it, priv->stats_bitmap.bitmap, NUM_ALL_STATS);
spin_lock_bh(&priv->stats_lock);
if (test_bit(FLOW_PRIORITY_STATS_IDX_TX_FRAMES,
priv->stats_bitmap.bitmap))
stats->tx_pause_frames = priv->tx_flowstats.tx_pause;
if (test_bit(FLOW_PRIORITY_STATS_IDX_RX_FRAMES,
priv->stats_bitmap.bitmap))
stats->rx_pause_frames = priv->rx_flowstats.rx_pause;
spin_unlock_bh(&priv->stats_lock);
}
static void mlx4_en_get_pauseparam(struct net_device *dev,
struct ethtool_pauseparam *pause)
{
@ -2138,6 +2156,7 @@ const struct ethtool_ops mlx4_en_ethtool_ops = {
.set_msglevel = mlx4_en_set_msglevel,
.get_coalesce = mlx4_en_get_coalesce,
.set_coalesce = mlx4_en_set_coalesce,
.get_pause_stats = mlx4_en_get_pause_stats,
.get_pauseparam = mlx4_en_get_pauseparam,
.set_pauseparam = mlx4_en_set_pauseparam,
.get_ringparam = mlx4_en_get_ringparam,

12
drivers/net/ethernet/mellanox/mlx4/mlx4_stats.h
View file

@ -84,6 +84,11 @@ struct mlx4_en_flow_stats_rx {
MLX4_NUM_PRIORITIES)
};
#define FLOW_PRIORITY_STATS_IDX_RX_FRAMES (NUM_MAIN_STATS + \
NUM_PORT_STATS + \
NUM_PF_STATS + \
NUM_FLOW_PRIORITY_STATS_RX)
struct mlx4_en_flow_stats_tx {
u64 tx_pause;
u64 tx_pause_duration;
@ -93,6 +98,13 @@ struct mlx4_en_flow_stats_tx {
MLX4_NUM_PRIORITIES)
};
#define FLOW_PRIORITY_STATS_IDX_TX_FRAMES (NUM_MAIN_STATS + \
NUM_PORT_STATS + \
NUM_PF_STATS + \
NUM_FLOW_PRIORITY_STATS_RX + \
NUM_FLOW_STATS_RX + \
NUM_FLOW_PRIORITY_STATS_TX)
#define NUM_FLOW_STATS (NUM_FLOW_STATS_RX + NUM_FLOW_STATS_TX + \
NUM_FLOW_PRIORITY_STATS_TX + \
NUM_FLOW_PRIORITY_STATS_RX)