drivers/net/ethernet/mellanox/mlx5/core/en_accel/ktls.h

   1 /* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
   2 /* Copyright (c) 2019 Mellanox Technologies. */
   3
   4 #ifndef __MLX5E_KTLS_H__
   5 #define __MLX5E_KTLS_H__
   6
   7 #include "en.h"
   8
   9 #ifdef CONFIG_MLX5_EN_TLS
  10 #include <net/tls.h>
  11 #include "accel/tls.h"
  12
  13 #define MLX5E_KTLS_STATIC_UMR_WQE_SZ \
  14         (sizeof(struct mlx5e_umr_wqe) + MLX5_ST_SZ_BYTES(tls_static_params))
  15 #define MLX5E_KTLS_STATIC_WQEBBS \
  16         (DIV_ROUND_UP(MLX5E_KTLS_STATIC_UMR_WQE_SZ, MLX5_SEND_WQE_BB))
  17
  18 #define MLX5E_KTLS_PROGRESS_WQE_SZ \
  19         (sizeof(struct mlx5e_tx_wqe) + MLX5_ST_SZ_BYTES(tls_progress_params))
  20 #define MLX5E_KTLS_PROGRESS_WQEBBS \
  21         (DIV_ROUND_UP(MLX5E_KTLS_PROGRESS_WQE_SZ, MLX5_SEND_WQE_BB))
  22 #define MLX5E_KTLS_MAX_DUMP_WQEBBS 2
  23
  24 enum {
  25         MLX5E_TLS_PROGRESS_PARAMS_AUTH_STATE_NO_OFFLOAD     = 0,
  26         MLX5E_TLS_PROGRESS_PARAMS_AUTH_STATE_OFFLOAD        = 1,
  27         MLX5E_TLS_PROGRESS_PARAMS_AUTH_STATE_AUTHENTICATION = 2,
  28 };
  29
  30 enum {
  31         MLX5E_TLS_PROGRESS_PARAMS_RECORD_TRACKER_STATE_START     = 0,
  32         MLX5E_TLS_PROGRESS_PARAMS_RECORD_TRACKER_STATE_SEARCHING = 1,
  33         MLX5E_TLS_PROGRESS_PARAMS_RECORD_TRACKER_STATE_TRACKING  = 2,
  34 };
  35
  36 struct mlx5e_ktls_offload_context_tx {
  37         struct tls_offload_context_tx *tx_ctx;
  38         struct tls_crypto_info *crypto_info;
  39         u32 expected_seq;
  40         u32 tisn;
  41         u32 key_id;
  42         bool ctx_post_pending;
  43 };
  44
  45 struct mlx5e_ktls_offload_context_tx_shadow {
  46         struct tls_offload_context_tx         tx_ctx;
  47         struct mlx5e_ktls_offload_context_tx *priv_tx;
  48 };
  49
  50 static inline void
  51 mlx5e_set_ktls_tx_priv_ctx(struct tls_context *tls_ctx,
  52                            struct mlx5e_ktls_offload_context_tx *priv_tx)
  53 {
  54         struct tls_offload_context_tx *tx_ctx = tls_offload_ctx_tx(tls_ctx);
  55         struct mlx5e_ktls_offload_context_tx_shadow *shadow;
  56
  57         BUILD_BUG_ON(sizeof(*shadow) > TLS_OFFLOAD_CONTEXT_SIZE_TX);
  58
  59         shadow = (struct mlx5e_ktls_offload_context_tx_shadow *)tx_ctx;
  60
  61         shadow->priv_tx = priv_tx;
  62         priv_tx->tx_ctx = tx_ctx;
  63 }
  64
  65 static inline struct mlx5e_ktls_offload_context_tx *
  66 mlx5e_get_ktls_tx_priv_ctx(struct tls_context *tls_ctx)
  67 {
  68         struct tls_offload_context_tx *tx_ctx = tls_offload_ctx_tx(tls_ctx);
  69         struct mlx5e_ktls_offload_context_tx_shadow *shadow;
  70
  71         BUILD_BUG_ON(sizeof(*shadow) > TLS_OFFLOAD_CONTEXT_SIZE_TX);
  72
  73         shadow = (struct mlx5e_ktls_offload_context_tx_shadow *)tx_ctx;
  74
  75         return shadow->priv_tx;
  76 }
  77
  78 void mlx5e_ktls_build_netdev(struct mlx5e_priv *priv);
  79 void mlx5e_ktls_tx_offload_set_pending(struct mlx5e_ktls_offload_context_tx *priv_tx);
  80
  81 struct sk_buff *mlx5e_ktls_handle_tx_skb(struct net_device *netdev,
  82                                          struct mlx5e_txqsq *sq,
  83                                          struct sk_buff *skb,
  84                                          struct mlx5e_tx_wqe **wqe, u16 *pi);
  85 void mlx5e_ktls_tx_handle_resync_dump_comp(struct mlx5e_txqsq *sq,
  86                                            struct mlx5e_tx_wqe_info *wi,
  87                                            struct mlx5e_sq_dma *dma);
  88
  89 #else
  90
  91 static inline void mlx5e_ktls_build_netdev(struct mlx5e_priv *priv)
  92 {
  93 }
  94
  95 #endif
  96
  97 #endif /* __MLX5E_TLS_H__ */