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net/mlx5e: kTLS, Use kernel API to extract private offload context 

Modify the implementation of the private kTLS TX HW offload context
getter and setter, so it uses the kernel API functions, instead of
a local shadow structure.
A single BUILD_BUG_ON check is sufficient, remove the duplicate.

Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Reviewed-by: Maxim Mikityanskiy <maximmi@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
This commit is contained in:
Tariq Toukan 2020-05-28 10:04:03 +03:00 committed by Saeed Mahameed
parent 7d0d0d86ec
commit df8d866770
1 changed files with 9 additions and 19 deletions
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28
drivers/net/ethernet/mellanox/mlx5/core/en_accel/ktls_tx.c
View File

@ -56,37 +56,26 @@ struct mlx5e_ktls_offload_context_tx {
bool ctx_post_pending;
};
struct mlx5e_ktls_offload_context_tx_shadow {
struct tls_offload_context_tx tx_ctx;
struct mlx5e_ktls_offload_context_tx *priv_tx;
};
static void
mlx5e_set_ktls_tx_priv_ctx(struct tls_context *tls_ctx,
struct mlx5e_ktls_offload_context_tx *priv_tx)
{
struct tls_offload_context_tx *tx_ctx = tls_offload_ctx_tx(tls_ctx);
struct mlx5e_ktls_offload_context_tx_shadow *shadow;
struct mlx5e_ktls_offload_context_tx **ctx =
__tls_driver_ctx(tls_ctx, TLS_OFFLOAD_CTX_DIR_TX);
BUILD_BUG_ON(sizeof(*shadow) > TLS_OFFLOAD_CONTEXT_SIZE_TX);
BUILD_BUG_ON(sizeof(struct mlx5e_ktls_offload_context_tx *) >
TLS_OFFLOAD_CONTEXT_SIZE_TX);
shadow = (struct mlx5e_ktls_offload_context_tx_shadow *)tx_ctx;
shadow->priv_tx = priv_tx;
priv_tx->tx_ctx = tx_ctx;
*ctx = priv_tx;
}
static struct mlx5e_ktls_offload_context_tx *
mlx5e_get_ktls_tx_priv_ctx(struct tls_context *tls_ctx)
{
struct tls_offload_context_tx *tx_ctx = tls_offload_ctx_tx(tls_ctx);
struct mlx5e_ktls_offload_context_tx_shadow *shadow;
struct mlx5e_ktls_offload_context_tx **ctx =
__tls_driver_ctx(tls_ctx, TLS_OFFLOAD_CTX_DIR_TX);
BUILD_BUG_ON(sizeof(*shadow) > TLS_OFFLOAD_CONTEXT_SIZE_TX);
shadow = (struct mlx5e_ktls_offload_context_tx_shadow *)tx_ctx;
return shadow->priv_tx;
return *ctx;
}
int mlx5e_ktls_add_tx(struct net_device *netdev, struct sock *sk,
@ -113,6 +102,7 @@ int mlx5e_ktls_add_tx(struct net_device *netdev, struct sock *sk,
priv_tx->expected_seq = start_offload_tcp_sn;
priv_tx->crypto_info =
*(struct tls12_crypto_info_aes_gcm_128 *)crypto_info;
priv_tx->tx_ctx = tls_offload_ctx_tx(tls_ctx);
mlx5e_set_ktls_tx_priv_ctx(tls_ctx, priv_tx);