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 <linux/tls.h> 8 #include <net/tls.h> 9 #include "en.h" 10 11 #ifdef CONFIG_MLX5_EN_TLS 12 int mlx5_ktls_create_key(struct mlx5_core_dev *mdev, 13 struct tls_crypto_info *crypto_info, 14 u32 *p_key_id); 15 void mlx5_ktls_destroy_key(struct mlx5_core_dev *mdev, u32 key_id); 16 17 static inline bool mlx5e_is_ktls_device(struct mlx5_core_dev *mdev) 18 { 19 if (is_kdump_kernel()) 20 return false; 21 22 if (!MLX5_CAP_GEN(mdev, tls_tx) && !MLX5_CAP_GEN(mdev, tls_rx)) 23 return false; 24 25 if (!MLX5_CAP_GEN(mdev, log_max_dek)) 26 return false; 27 28 return MLX5_CAP_TLS(mdev, tls_1_2_aes_gcm_128); 29 } 30 31 static inline bool mlx5e_ktls_type_check(struct mlx5_core_dev *mdev, 32 struct tls_crypto_info *crypto_info) 33 { 34 switch (crypto_info->cipher_type) { 35 case TLS_CIPHER_AES_GCM_128: 36 if (crypto_info->version == TLS_1_2_VERSION) 37 return MLX5_CAP_TLS(mdev, tls_1_2_aes_gcm_128); 38 break; 39 } 40 41 return false; 42 } 43 44 void mlx5e_ktls_build_netdev(struct mlx5e_priv *priv); 45 int mlx5e_ktls_init_rx(struct mlx5e_priv *priv); 46 void mlx5e_ktls_cleanup_rx(struct mlx5e_priv *priv); 47 int mlx5e_ktls_set_feature_rx(struct net_device *netdev, bool enable); 48 struct mlx5e_ktls_resync_resp * 49 mlx5e_ktls_rx_resync_create_resp_list(void); 50 void mlx5e_ktls_rx_resync_destroy_resp_list(struct mlx5e_ktls_resync_resp *resp_list); 51 52 static inline bool mlx5e_is_ktls_tx(struct mlx5_core_dev *mdev) 53 { 54 return !is_kdump_kernel() && MLX5_CAP_GEN(mdev, tls_tx); 55 } 56 57 static inline bool mlx5e_is_ktls_rx(struct mlx5_core_dev *mdev) 58 { 59 return !is_kdump_kernel() && MLX5_CAP_GEN(mdev, tls_rx); 60 } 61 62 struct mlx5e_tls_sw_stats { 63 atomic64_t tx_tls_ctx; 64 atomic64_t tx_tls_del; 65 atomic64_t rx_tls_ctx; 66 atomic64_t rx_tls_del; 67 }; 68 69 struct mlx5e_tls { 70 struct mlx5e_tls_sw_stats sw_stats; 71 struct workqueue_struct *rx_wq; 72 }; 73 74 int mlx5e_ktls_init(struct mlx5e_priv *priv); 75 void mlx5e_ktls_cleanup(struct mlx5e_priv *priv); 76 77 int mlx5e_ktls_get_count(struct mlx5e_priv *priv); 78 int mlx5e_ktls_get_strings(struct mlx5e_priv *priv, uint8_t *data); 79 int mlx5e_ktls_get_stats(struct mlx5e_priv *priv, u64 *data); 80 81 #else 82 static inline void mlx5e_ktls_build_netdev(struct mlx5e_priv *priv) 83 { 84 } 85 86 static inline int mlx5e_ktls_init_rx(struct mlx5e_priv *priv) 87 { 88 return 0; 89 } 90 91 static inline void mlx5e_ktls_cleanup_rx(struct mlx5e_priv *priv) 92 { 93 } 94 95 static inline int mlx5e_ktls_set_feature_rx(struct net_device *netdev, bool enable) 96 { 97 netdev_warn(netdev, "kTLS is not supported\n"); 98 return -EOPNOTSUPP; 99 } 100 101 static inline struct mlx5e_ktls_resync_resp * 102 mlx5e_ktls_rx_resync_create_resp_list(void) 103 { 104 return ERR_PTR(-EOPNOTSUPP); 105 } 106 107 static inline void 108 mlx5e_ktls_rx_resync_destroy_resp_list(struct mlx5e_ktls_resync_resp *resp_list) {} 109 110 static inline bool mlx5e_is_ktls_rx(struct mlx5_core_dev *mdev) 111 { 112 return false; 113 } 114 115 static inline int mlx5e_ktls_init(struct mlx5e_priv *priv) { return 0; } 116 static inline void mlx5e_ktls_cleanup(struct mlx5e_priv *priv) { } 117 static inline int mlx5e_ktls_get_count(struct mlx5e_priv *priv) { return 0; } 118 static inline int mlx5e_ktls_get_strings(struct mlx5e_priv *priv, uint8_t *data) 119 { 120 return 0; 121 } 122 123 static inline int mlx5e_ktls_get_stats(struct mlx5e_priv *priv, u64 *data) 124 { 125 return 0; 126 } 127 #endif 128 129 #endif /* __MLX5E_TLS_H__ */ 130