[dpdk-dev] [PATCH] net/mlx5: cleanup the allocation of the buffer used for the ethtool stats
Thierry Herbelot
thierry.herbelot at 6wind.com
Fri Nov 17 14:51:34 CET 2017
Simplify the computation for the needed size:
- exact size for the structure header,
- exact size for a number of 64-bit counters.
Fixes: a4193ae3bc4f ('net/mlx5: support extended statistics')
Signed-off-by: Thierry Herbelot <thierry.herbelot at 6wind.com>
---
drivers/net/mlx5/mlx5_stats.c | 8 +++-----
1 file changed, 3 insertions(+), 5 deletions(-)
diff --git a/drivers/net/mlx5/mlx5_stats.c b/drivers/net/mlx5/mlx5_stats.c
index 5e225d3740d2..2427585f71ca 100644
--- a/drivers/net/mlx5/mlx5_stats.c
+++ b/drivers/net/mlx5/mlx5_stats.c
@@ -143,11 +143,9 @@ priv_read_dev_counters(struct priv *priv, uint64_t *stats)
struct mlx5_xstats_ctrl *xstats_ctrl = &priv->xstats_ctrl;
unsigned int i;
struct ifreq ifr;
- unsigned int stats_sz = (xstats_ctrl->stats_n * sizeof(uint64_t)) +
- sizeof(struct ethtool_stats);
- struct ethtool_stats et_stats[(stats_sz + (
- sizeof(struct ethtool_stats) - 1)) /
- sizeof(struct ethtool_stats)];
+ unsigned int stats_sz = xstats_ctrl->stats_n * sizeof(uint64_t);
+ unsigned char et_stat_buf[sizeof(struct ethtool_stats) + stats_sz];
+ struct ethtool_stats *et_stats = (struct ethtool_stats *)et_stat_buf;
et_stats->cmd = ETHTOOL_GSTATS;
et_stats->n_stats = xstats_ctrl->stats_n;
--
2.11.0
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