diff options
| author |   Eran Ben Elisha <eranbe@mellanox.com> | 2015-06-15 17:58:58 +0300 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2015-06-15 17:23:01 -0700 |
| commit | 47d8417f5914012c794684f651213ffae1b91619 (patch) | |
| tree | 7be5039f8dcfde0e3efe72e3b967316c7d5f9a58 /drivers/net/ethernet/mellanox/mlx4/main.c | |
| parent | net/mlx4_core: Reset counters data when freed (diff) | |
| download | linux-dev-47d8417f5914012c794684f651213ffae1b91619.tar.xz linux-dev-47d8417f5914012c794684f651213ffae1b91619.zip | |
net/mlx4_core: Add sink counter
Reserve the last valid counter index for "sink" counter, when a
new counter cannot be allocated, the driver will use this counter.
In order to avoid allocating this counter on any other flow, fix the
indices bitmap allocation range, and reserve the sink counter index.
Add macro for the sink counter index and replace all appearences of the
index with the macro.
Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com>
Signed-off-by: Hadar Hen Zion <hadarh@mellanox.com>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlx4/main.c')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx4/main.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx4/main.c b/drivers/net/ethernet/mellanox/mlx4/main.c index 1072dc1054dd..2bf54687f9fb 100644 --- a/drivers/net/ethernet/mellanox/mlx4/main.c +++ b/drivers/net/ethernet/mellanox/mlx4/main.c @@ -479,7 +479,7 @@ static int mlx4_dev_cap(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap) } } - dev->caps.max_counters = 1 << ilog2(dev_cap->max_counters); + dev->caps.max_counters = dev_cap->max_counters; dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW] = dev_cap->reserved_qps; dev->caps.reserved_qps_cnt[MLX4_QP_REGION_ETH_ADDR] = @@ -2193,13 +2193,16 @@ err_free_icm: static int mlx4_init_counters_table(struct mlx4_dev *dev) { struct mlx4_priv *priv = mlx4_priv(dev); - int nent; + int nent_pow2; if (!(dev->caps.flags & MLX4_DEV_CAP_FLAG_COUNTERS)) return -ENOENT; - nent = dev->caps.max_counters; - return mlx4_bitmap_init(&priv->counters_bitmap, nent, nent - 1, 0, 0); + nent_pow2 = roundup_pow_of_two(dev->caps.max_counters); + /* reserve last counter index for sink counter */ + return mlx4_bitmap_init(&priv->counters_bitmap, nent_pow2, + nent_pow2 - 1, 0, + nent_pow2 - dev->caps.max_counters + 1); } static void mlx4_cleanup_counters_table(struct mlx4_dev *dev) |