Commit 2ea36e2e authored by Leon Romanovsky's avatar Leon Romanovsky Committed by Saeed Mahameed
Browse files

net/mlx5: Remove useless validity check



All callers build xfrm attributes with help of mlx5e_ipsec_build_accel_xfrm_attrs()
function that ensure validity of attributes. There is no need to recheck
them again.

Reviewed-by: default avatarRaed Salem <raeds@nvidia.com>
Signed-off-by: default avatarLeon Romanovsky <leonro@nvidia.com>
Signed-off-by: default avatarSaeed Mahameed <saeedm@nvidia.com>
parent c674df97
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+0 −44
Original line number Diff line number Diff line
@@ -62,55 +62,11 @@ u32 mlx5_ipsec_device_caps(struct mlx5_core_dev *mdev)
}
EXPORT_SYMBOL_GPL(mlx5_ipsec_device_caps);

static int
mlx5_ipsec_offload_esp_validate_xfrm_attrs(struct mlx5_core_dev *mdev,
					   const struct mlx5_accel_esp_xfrm_attrs *attrs)
{
	if (attrs->replay_type != MLX5_ACCEL_ESP_REPLAY_NONE) {
		mlx5_core_err(mdev, "Cannot offload xfrm states with anti replay (replay_type = %d)\n",
			      attrs->replay_type);
		return -EOPNOTSUPP;
	}

	if (attrs->keymat_type != MLX5_ACCEL_ESP_KEYMAT_AES_GCM) {
		mlx5_core_err(mdev, "Only aes gcm keymat is supported (keymat_type = %d)\n",
			      attrs->keymat_type);
		return -EOPNOTSUPP;
	}

	if (attrs->keymat.aes_gcm.iv_algo !=
	    MLX5_ACCEL_ESP_AES_GCM_IV_ALGO_SEQ) {
		mlx5_core_err(mdev, "Only iv sequence algo is supported (iv_algo = %d)\n",
			      attrs->keymat.aes_gcm.iv_algo);
		return -EOPNOTSUPP;
	}

	if (attrs->keymat.aes_gcm.key_len != 128 &&
	    attrs->keymat.aes_gcm.key_len != 256) {
		mlx5_core_err(mdev, "Cannot offload xfrm states with key length other than 128/256 bit (key length = %d)\n",
			      attrs->keymat.aes_gcm.key_len);
		return -EOPNOTSUPP;
	}

	if ((attrs->flags & MLX5_ACCEL_ESP_FLAGS_ESN_TRIGGERED) &&
	    !MLX5_CAP_IPSEC(mdev, ipsec_esn)) {
		mlx5_core_err(mdev, "Cannot offload xfrm states with ESN triggered\n");
		return -EOPNOTSUPP;
	}

	return 0;
}

static struct mlx5_accel_esp_xfrm *
mlx5_ipsec_offload_esp_create_xfrm(struct mlx5_core_dev *mdev,
				   const struct mlx5_accel_esp_xfrm_attrs *attrs)
{
	struct mlx5_ipsec_esp_xfrm *mxfrm;
	int err = 0;

	err = mlx5_ipsec_offload_esp_validate_xfrm_attrs(mdev, attrs);
	if (err)
		return ERR_PTR(err);

	mxfrm = kzalloc(sizeof(*mxfrm), GFP_KERNEL);
	if (!mxfrm)
+0 −10
Original line number Diff line number Diff line
@@ -36,10 +36,6 @@

#include <linux/mlx5/driver.h>

enum mlx5_accel_esp_aes_gcm_keymat_iv_algo {
	MLX5_ACCEL_ESP_AES_GCM_IV_ALGO_SEQ,
};

enum mlx5_accel_esp_flags {
	MLX5_ACCEL_ESP_FLAGS_TUNNEL            = 0,    /* Default */
	MLX5_ACCEL_ESP_FLAGS_TRANSPORT         = 1UL << 0,
@@ -57,14 +53,9 @@ enum mlx5_accel_esp_keymats {
	MLX5_ACCEL_ESP_KEYMAT_AES_GCM,
};

enum mlx5_accel_esp_replay {
	MLX5_ACCEL_ESP_REPLAY_NONE,
	MLX5_ACCEL_ESP_REPLAY_BMP,
};

struct aes_gcm_keymat {
	u64   seq_iv;
	enum mlx5_accel_esp_aes_gcm_keymat_iv_algo iv_algo;

	u32   salt;
	u32   icv_len;
@@ -81,7 +72,6 @@ struct mlx5_accel_esp_xfrm_attrs {
	u32   tfc_pad;
	u32   flags;
	u32   sa_handle;
	enum mlx5_accel_esp_replay replay_type;
	union {
		struct {
			u32 size;