1 /* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */ 2 /* Copyright (c) 2022, NVIDIA CORPORATION & AFFILIATES. All rights reserved. */ 3 4 #ifndef __MLX5_MACSEC_STEERING_H__ 5 #define __MLX5_MACSEC_STEERING_H__ 6 7 #ifdef CONFIG_MLX5_MACSEC 8 9 /* Bit31 - 30: MACsec marker, Bit15-0: MACsec id */ 10 #define MLX5_MACEC_RX_FS_ID_MAX USHRT_MAX /* Must be power of two */ 11 #define MLX5_MACSEC_RX_FS_ID_MASK MLX5_MACEC_RX_FS_ID_MAX 12 #define MLX5_MACSEC_METADATA_MARKER(metadata) ((((metadata) >> 30) & 0x3) == 0x1) 13 #define MLX5_MACSEC_RX_METADAT_HANDLE(metadata) ((metadata) & MLX5_MACSEC_RX_FS_ID_MASK) 14 15 /* MACsec TX flow steering */ 16 #define MLX5_ETH_WQE_FT_META_MACSEC_MASK \ 17 (MLX5_ETH_WQE_FT_META_MACSEC | MLX5_ETH_WQE_FT_META_MACSEC_FS_ID_MASK) 18 #define MLX5_ETH_WQE_FT_META_MACSEC_SHIFT MLX5_ETH_WQE_FT_META_SHIFT 19 20 /* MACsec fs_id handling for steering */ 21 #define mlx5_macsec_fs_set_tx_fs_id(fs_id) \ 22 (((MLX5_ETH_WQE_FT_META_MACSEC) >> MLX5_ETH_WQE_FT_META_MACSEC_SHIFT) \ 23 | ((fs_id) << 2)) 24 25 #define MLX5_MACSEC_TX_METADATA(fs_id) \ 26 (mlx5_macsec_fs_set_tx_fs_id(fs_id) << \ 27 MLX5_ETH_WQE_FT_META_MACSEC_SHIFT) 28 29 /* MACsec fs_id uses 4 bits, supports up to 16 interfaces */ 30 #define MLX5_MACSEC_NUM_OF_SUPPORTED_INTERFACES 16 31 32 struct mlx5_macsec_fs; 33 union mlx5_macsec_rule; 34 35 struct mlx5_macsec_rule_attrs { 36 sci_t sci; 37 u32 macsec_obj_id; 38 u8 assoc_num; 39 int action; 40 }; 41 42 struct mlx5_macsec_stats { 43 u64 macsec_rx_pkts; 44 u64 macsec_rx_bytes; 45 u64 macsec_rx_pkts_drop; 46 u64 macsec_rx_bytes_drop; 47 u64 macsec_tx_pkts; 48 u64 macsec_tx_bytes; 49 u64 macsec_tx_pkts_drop; 50 u64 macsec_tx_bytes_drop; 51 }; 52 53 enum mlx5_macsec_action { 54 MLX5_ACCEL_MACSEC_ACTION_ENCRYPT, 55 MLX5_ACCEL_MACSEC_ACTION_DECRYPT, 56 }; 57 58 void mlx5_macsec_fs_cleanup(struct mlx5_macsec_fs *macsec_fs); 59 60 struct mlx5_macsec_fs * 61 mlx5_macsec_fs_init(struct mlx5_core_dev *mdev); 62 63 union mlx5_macsec_rule * 64 mlx5_macsec_fs_add_rule(struct mlx5_macsec_fs *macsec_fs, 65 const struct macsec_context *ctx, 66 struct mlx5_macsec_rule_attrs *attrs, 67 u32 *sa_fs_id); 68 69 void mlx5_macsec_fs_del_rule(struct mlx5_macsec_fs *macsec_fs, 70 union mlx5_macsec_rule *macsec_rule, 71 int action, void *macdev, u32 sa_fs_id); 72 73 void mlx5_macsec_fs_get_stats_fill(struct mlx5_macsec_fs *macsec_fs, void *macsec_stats); 74 struct mlx5_macsec_stats *mlx5_macsec_fs_get_stats(struct mlx5_macsec_fs *macsec_fs); 75 u32 mlx5_macsec_fs_get_fs_id_from_hashtable(struct mlx5_macsec_fs *macsec_fs, sci_t *sci); 76 77 #endif 78 79 #endif /* __MLX5_MACSEC_STEERING_H__ */ 80