1 /* SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause) */ 2 /* 3 * Copyright (c) 2018 Mellanox Technologies. All rights reserved. 4 */ 5 6 #ifndef _MLX5_ESWITCH_ 7 #define _MLX5_ESWITCH_ 8 9 #include <linux/mlx5/driver.h> 10 #include <net/devlink.h> 11 12 #define MLX5_ESWITCH_MANAGER(mdev) MLX5_CAP_GEN(mdev, eswitch_manager) 13 14 enum { 15 MLX5_ESWITCH_NONE, 16 MLX5_ESWITCH_LEGACY, 17 MLX5_ESWITCH_OFFLOADS 18 }; 19 20 enum { 21 REP_ETH, 22 REP_IB, 23 NUM_REP_TYPES, 24 }; 25 26 enum { 27 REP_UNREGISTERED, 28 REP_REGISTERED, 29 REP_LOADED, 30 }; 31 32 enum mlx5_switchdev_event { 33 MLX5_SWITCHDEV_EVENT_PAIR, 34 MLX5_SWITCHDEV_EVENT_UNPAIR, 35 }; 36 37 struct mlx5_eswitch_rep; 38 struct mlx5_eswitch_rep_ops { 39 int (*load)(struct mlx5_core_dev *dev, struct mlx5_eswitch_rep *rep); 40 void (*unload)(struct mlx5_eswitch_rep *rep); 41 void *(*get_proto_dev)(struct mlx5_eswitch_rep *rep); 42 int (*event)(struct mlx5_eswitch *esw, 43 struct mlx5_eswitch_rep *rep, 44 enum mlx5_switchdev_event event, 45 void *data); 46 }; 47 48 struct mlx5_eswitch_rep_data { 49 void *priv; 50 atomic_t state; 51 }; 52 53 struct mlx5_eswitch_rep { 54 struct mlx5_eswitch_rep_data rep_data[NUM_REP_TYPES]; 55 u16 vport; 56 u16 vlan; 57 /* Only IB rep is using vport_index */ 58 u16 vport_index; 59 u32 vlan_refcount; 60 struct mlx5_eswitch *esw; 61 }; 62 63 void mlx5_eswitch_register_vport_reps(struct mlx5_eswitch *esw, 64 const struct mlx5_eswitch_rep_ops *ops, 65 u8 rep_type); 66 void mlx5_eswitch_unregister_vport_reps(struct mlx5_eswitch *esw, u8 rep_type); 67 void *mlx5_eswitch_get_proto_dev(struct mlx5_eswitch *esw, 68 u16 vport_num, 69 u8 rep_type); 70 struct mlx5_eswitch_rep *mlx5_eswitch_vport_rep(struct mlx5_eswitch *esw, 71 u16 vport_num); 72 void *mlx5_eswitch_uplink_get_proto_dev(struct mlx5_eswitch *esw, u8 rep_type); 73 struct mlx5_flow_handle * 74 mlx5_eswitch_add_send_to_vport_rule(struct mlx5_eswitch *on_esw, 75 struct mlx5_eswitch *from_esw, 76 struct mlx5_eswitch_rep *rep, u32 sqn); 77 78 #ifdef CONFIG_MLX5_ESWITCH 79 enum devlink_eswitch_encap_mode 80 mlx5_eswitch_get_encap_mode(const struct mlx5_core_dev *dev); 81 82 bool mlx5_eswitch_reg_c1_loopback_enabled(const struct mlx5_eswitch *esw); 83 bool mlx5_eswitch_vport_match_metadata_enabled(const struct mlx5_eswitch *esw); 84 85 /* Reg C0 usage: 86 * Reg C0 = < ESW_PFNUM_BITS(4) | ESW_VPORT BITS(12) | ESW_REG_C0_OBJ(16) > 87 * 88 * Highest 4 bits of the reg c0 is the PF_NUM (range 0-15), 12 bits of 89 * unique non-zero vport id (range 1-4095). The rest (lowest 16 bits) is left 90 * for user data objects managed by a common mapping context. 91 * PFNUM + VPORT comprise the SOURCE_PORT matching. 92 */ 93 #define ESW_VPORT_BITS 12 94 #define ESW_PFNUM_BITS 4 95 #define ESW_SOURCE_PORT_METADATA_BITS (ESW_PFNUM_BITS + ESW_VPORT_BITS) 96 #define ESW_SOURCE_PORT_METADATA_OFFSET (32 - ESW_SOURCE_PORT_METADATA_BITS) 97 #define ESW_REG_C0_USER_DATA_METADATA_BITS (32 - ESW_SOURCE_PORT_METADATA_BITS) 98 #define ESW_REG_C0_USER_DATA_METADATA_MASK GENMASK(ESW_REG_C0_USER_DATA_METADATA_BITS - 1, 0) 99 100 static inline u32 mlx5_eswitch_get_vport_metadata_mask(void) 101 { 102 return GENMASK(31, 32 - ESW_SOURCE_PORT_METADATA_BITS); 103 } 104 105 u32 mlx5_eswitch_get_vport_metadata_for_match(struct mlx5_eswitch *esw, 106 u16 vport_num); 107 u32 mlx5_eswitch_get_vport_metadata_for_set(struct mlx5_eswitch *esw, 108 u16 vport_num); 109 110 /* Reg C1 usage: 111 * Reg C1 = < Reserved(1) | ESW_TUN_ID(12) | ESW_TUN_OPTS(11) | ESW_ZONE_ID(8) > 112 * 113 * Highest bit is reserved for other offloads as marker bit, next 12 bits of reg c1 114 * is the encapsulation tunnel id, next 11 bits is encapsulation tunnel options, 115 * and the lowest 8 bits are used for zone id. 116 * 117 * Zone id is used to restore CT flow when packet misses on chain. 118 * 119 * Tunnel id and options are used together to restore the tunnel info metadata 120 * on miss and to support inner header rewrite by means of implicit chain 0 121 * flows. 122 */ 123 #define ESW_RESERVED_BITS 1 124 #define ESW_ZONE_ID_BITS 8 125 #define ESW_TUN_OPTS_BITS 11 126 #define ESW_TUN_ID_BITS 12 127 #define ESW_TUN_OPTS_OFFSET ESW_ZONE_ID_BITS 128 #define ESW_TUN_OFFSET ESW_TUN_OPTS_OFFSET 129 #define ESW_ZONE_ID_MASK GENMASK(ESW_ZONE_ID_BITS - 1, 0) 130 #define ESW_TUN_OPTS_MASK GENMASK(31 - ESW_TUN_ID_BITS - ESW_RESERVED_BITS, ESW_TUN_OPTS_OFFSET) 131 #define ESW_TUN_MASK GENMASK(31 - ESW_RESERVED_BITS, ESW_TUN_OFFSET) 132 #define ESW_TUN_ID_SLOW_TABLE_GOTO_VPORT 0 /* 0 is not a valid tunnel id */ 133 /* 0x7FF is a reserved mapping */ 134 #define ESW_TUN_OPTS_SLOW_TABLE_GOTO_VPORT GENMASK(ESW_TUN_OPTS_BITS - 1, 0) 135 #define ESW_TUN_SLOW_TABLE_GOTO_VPORT ((ESW_TUN_ID_SLOW_TABLE_GOTO_VPORT << ESW_TUN_OPTS_BITS) | \ 136 ESW_TUN_OPTS_SLOW_TABLE_GOTO_VPORT) 137 #define ESW_TUN_SLOW_TABLE_GOTO_VPORT_MARK ESW_TUN_OPTS_MASK 138 139 u8 mlx5_eswitch_mode(struct mlx5_core_dev *dev); 140 u16 mlx5_eswitch_get_total_vports(const struct mlx5_core_dev *dev); 141 struct mlx5_core_dev *mlx5_eswitch_get_core_dev(struct mlx5_eswitch *esw); 142 143 #else /* CONFIG_MLX5_ESWITCH */ 144 145 static inline u8 mlx5_eswitch_mode(struct mlx5_core_dev *dev) 146 { 147 return MLX5_ESWITCH_NONE; 148 } 149 150 static inline enum devlink_eswitch_encap_mode 151 mlx5_eswitch_get_encap_mode(const struct mlx5_core_dev *dev) 152 { 153 return DEVLINK_ESWITCH_ENCAP_MODE_NONE; 154 } 155 156 static inline bool 157 mlx5_eswitch_reg_c1_loopback_enabled(const struct mlx5_eswitch *esw) 158 { 159 return false; 160 }; 161 162 static inline bool 163 mlx5_eswitch_vport_match_metadata_enabled(const struct mlx5_eswitch *esw) 164 { 165 return false; 166 }; 167 168 static inline u32 169 mlx5_eswitch_get_vport_metadata_for_match(struct mlx5_eswitch *esw, u16 vport_num) 170 { 171 return 0; 172 }; 173 174 static inline u32 175 mlx5_eswitch_get_vport_metadata_mask(void) 176 { 177 return 0; 178 } 179 180 static inline u16 mlx5_eswitch_get_total_vports(const struct mlx5_core_dev *dev) 181 { 182 return 0; 183 } 184 185 static inline struct mlx5_core_dev *mlx5_eswitch_get_core_dev(struct mlx5_eswitch *esw) 186 { 187 return NULL; 188 } 189 190 #endif /* CONFIG_MLX5_ESWITCH */ 191 192 static inline bool is_mdev_switchdev_mode(struct mlx5_core_dev *dev) 193 { 194 return mlx5_eswitch_mode(dev) == MLX5_ESWITCH_OFFLOADS; 195 } 196 197 #endif 198