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| author | Gustavo A. R. Silva <gustavoars@kernel.org> | 2020-07-30 01:58:03 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-07-31 03:38:23 +0300 |
| commit | 10470c0d7e921a46e126ff8f8a3b60fdb944b3d0 (patch) | |
| tree | 2b78e6f8026b019a0a267a4476dc0c7f703e87e3 /drivers/net/ethernet | |
| parent | b04e55d641c0d8c6b7305b9cfc7d000f2d305849 (diff) | |
| download | linux-10470c0d7e921a46e126ff8f8a3b60fdb944b3d0.tar.xz | |
mlxsw: spectrum_cnt: Use flex_array_size() helper in memcpy()
Make use of the flex_array_size() helper to calculate the size of a
flexible array member within an enclosing structure.
This helper offers defense-in-depth against potential integer
overflows, while at the same time makes it explicitly clear that
we are dealing witha flexible array member.
Also, remove unnecessary pointer identifier sub_pool.
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Tested-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlxsw/spectrum_cnt.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_cnt.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_cnt.c index 7974982533b5..b65b93a2b9bc 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_cnt.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_cnt.c @@ -121,7 +121,6 @@ int mlxsw_sp_counter_pool_init(struct mlxsw_sp *mlxsw_sp) { unsigned int sub_pools_count = ARRAY_SIZE(mlxsw_sp_counter_sub_pools); struct devlink *devlink = priv_to_devlink(mlxsw_sp->core); - struct mlxsw_sp_counter_sub_pool *sub_pool; struct mlxsw_sp_counter_pool *pool; unsigned int map_size; int err; @@ -131,9 +130,9 @@ int mlxsw_sp_counter_pool_init(struct mlxsw_sp *mlxsw_sp) if (!pool) return -ENOMEM; mlxsw_sp->counter_pool = pool; - memcpy(pool->sub_pools, mlxsw_sp_counter_sub_pools, - sub_pools_count * sizeof(*sub_pool)); pool->sub_pools_count = sub_pools_count; + memcpy(pool->sub_pools, mlxsw_sp_counter_sub_pools, + flex_array_size(pool, sub_pools, pool->sub_pools_count)); spin_lock_init(&pool->counter_pool_lock); atomic_set(&pool->active_entries_count, 0); |