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net/mlx5: IPsec, Fix coverity issue

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The cited commit introduced the following coverity issue at functions
mlx5_fpga_is_ipsec_device() and mlx5_fpga_ipsec_release_sa_ctx():
- bit_and_with_zero:
  accel_xfrm->attrs.action & MLX5_ACCEL_ESP_ACTION_DECRYPT is always 0.

As MLX5_ACCEL_ESP_ACTION_DECRYPT is not a bitwise flag and was wrongly
used with bitwise operation, the above expression is always zero value
as MLX5_ACCEL_ESP_ACTION_DECRYPT is zero.

Fix by using "==" comparison operator instead.

Fixes: 7dfee4b1d7 ("net/mlx5: IPsec, Refactor SA handle creation and destruction")
Signed-off-by: Raed Salem <raeds@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
This commit is contained in:
Raed Salem 2020-04-22 09:19:08 +03:00 committed by Saeed Mahameed
parent a6b1b93605
commit 72d3fef161
1 changed files with 2 additions and 2 deletions
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4
drivers/net/ethernet/mellanox/mlx5/core/fpga/ipsec.c
View File

@ -708,7 +708,7 @@ void *mlx5_fpga_ipsec_create_sa_ctx(struct mlx5_core_dev *mdev,
goto exists;
}
if (accel_xfrm->attrs.action & MLX5_ACCEL_ESP_ACTION_DECRYPT) {
if (accel_xfrm->attrs.action == MLX5_ACCEL_ESP_ACTION_DECRYPT) {
err = ida_simple_get(&fipsec->halloc, 1, 0, GFP_KERNEL);
if (err < 0) {
context = ERR_PTR(err);
@ -759,7 +759,7 @@ void *mlx5_fpga_ipsec_create_sa_ctx(struct mlx5_core_dev *mdev,
rhash_sa));
unlock_hash:
mutex_unlock(&fipsec->sa_hash_lock);
if (accel_xfrm->attrs.action & MLX5_ACCEL_ESP_ACTION_DECRYPT)
if (accel_xfrm->attrs.action == MLX5_ACCEL_ESP_ACTION_DECRYPT)
ida_simple_remove(&fipsec->halloc, sa_ctx->sa_handle);
exists:
mutex_unlock(&fpga_xfrm->lock);