1 /* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */ 2 /* Copyright (c) 2021 Mellanox Technologies. */ 3 4 #ifndef __MLX5_EN_TC_PRIV_H__ 5 #define __MLX5_EN_TC_PRIV_H__ 6 7 #include "en_tc.h" 8 #include "en/tc/act/act.h" 9 10 #define MLX5E_TC_FLOW_BASE (MLX5E_TC_FLAG_LAST_EXPORTED_BIT + 1) 11 12 #define MLX5E_TC_MAX_SPLITS 1 13 14 #define mlx5e_nic_chains(priv) ((priv)->fs.tc.chains) 15 16 enum { 17 MLX5E_TC_FLOW_FLAG_INGRESS = MLX5E_TC_FLAG_INGRESS_BIT, 18 MLX5E_TC_FLOW_FLAG_EGRESS = MLX5E_TC_FLAG_EGRESS_BIT, 19 MLX5E_TC_FLOW_FLAG_ESWITCH = MLX5E_TC_FLAG_ESW_OFFLOAD_BIT, 20 MLX5E_TC_FLOW_FLAG_FT = MLX5E_TC_FLAG_FT_OFFLOAD_BIT, 21 MLX5E_TC_FLOW_FLAG_NIC = MLX5E_TC_FLAG_NIC_OFFLOAD_BIT, 22 MLX5E_TC_FLOW_FLAG_OFFLOADED = MLX5E_TC_FLOW_BASE, 23 MLX5E_TC_FLOW_FLAG_HAIRPIN = MLX5E_TC_FLOW_BASE + 1, 24 MLX5E_TC_FLOW_FLAG_HAIRPIN_RSS = MLX5E_TC_FLOW_BASE + 2, 25 MLX5E_TC_FLOW_FLAG_SLOW = MLX5E_TC_FLOW_BASE + 3, 26 MLX5E_TC_FLOW_FLAG_DUP = MLX5E_TC_FLOW_BASE + 4, 27 MLX5E_TC_FLOW_FLAG_NOT_READY = MLX5E_TC_FLOW_BASE + 5, 28 MLX5E_TC_FLOW_FLAG_DELETED = MLX5E_TC_FLOW_BASE + 6, 29 MLX5E_TC_FLOW_FLAG_CT = MLX5E_TC_FLOW_BASE + 7, 30 MLX5E_TC_FLOW_FLAG_L3_TO_L2_DECAP = MLX5E_TC_FLOW_BASE + 8, 31 MLX5E_TC_FLOW_FLAG_TUN_RX = MLX5E_TC_FLOW_BASE + 9, 32 MLX5E_TC_FLOW_FLAG_FAILED = MLX5E_TC_FLOW_BASE + 10, 33 MLX5E_TC_FLOW_FLAG_SAMPLE = MLX5E_TC_FLOW_BASE + 11, 34 }; 35 36 struct mlx5e_tc_flow_parse_attr { 37 const struct ip_tunnel_info *tun_info[MLX5_MAX_FLOW_FWD_VPORTS]; 38 struct net_device *filter_dev; 39 struct mlx5_flow_spec spec; 40 struct mlx5e_tc_mod_hdr_acts mod_hdr_acts; 41 int mirred_ifindex[MLX5_MAX_FLOW_FWD_VPORTS]; 42 struct ethhdr eth; 43 struct mlx5e_tc_act_parse_state parse_state; 44 }; 45 46 /* Helper struct for accessing a struct containing list_head array. 47 * Containing struct 48 * |- Helper array 49 * [0] Helper item 0 50 * |- list_head item 0 51 * |- index (0) 52 * [1] Helper item 1 53 * |- list_head item 1 54 * |- index (1) 55 * To access the containing struct from one of the list_head items: 56 * 1. Get the helper item from the list_head item using 57 * helper item = 58 * container_of(list_head item, helper struct type, list_head field) 59 * 2. Get the contining struct from the helper item and its index in the array: 60 * containing struct = 61 * container_of(helper item, containing struct type, helper field[index]) 62 */ 63 struct encap_flow_item { 64 struct mlx5e_encap_entry *e; /* attached encap instance */ 65 struct list_head list; 66 int index; 67 }; 68 69 struct encap_route_flow_item { 70 struct mlx5e_route_entry *r; /* attached route instance */ 71 int index; 72 }; 73 74 struct mlx5e_tc_flow { 75 struct rhash_head node; 76 struct mlx5e_priv *priv; 77 u64 cookie; 78 unsigned long flags; 79 struct mlx5_flow_handle *rule[MLX5E_TC_MAX_SPLITS + 1]; 80 81 /* flows sharing the same reformat object - currently mpls decap */ 82 struct list_head l3_to_l2_reformat; 83 struct mlx5e_decap_entry *decap_reformat; 84 85 /* flows sharing same route entry */ 86 struct list_head decap_routes; 87 struct mlx5e_route_entry *decap_route; 88 struct encap_route_flow_item encap_routes[MLX5_MAX_FLOW_FWD_VPORTS]; 89 90 /* Flow can be associated with multiple encap IDs. 91 * The number of encaps is bounded by the number of supported 92 * destinations. 93 */ 94 struct encap_flow_item encaps[MLX5_MAX_FLOW_FWD_VPORTS]; 95 struct mlx5e_tc_flow *peer_flow; 96 struct mlx5e_mod_hdr_handle *mh; /* attached mod header instance */ 97 struct mlx5e_hairpin_entry *hpe; /* attached hairpin instance */ 98 struct list_head hairpin; /* flows sharing the same hairpin */ 99 struct list_head peer; /* flows with peer flow */ 100 struct list_head unready; /* flows not ready to be offloaded (e.g 101 * due to missing route) 102 */ 103 struct net_device *orig_dev; /* netdev adding flow first */ 104 int tmp_entry_index; 105 struct list_head tmp_list; /* temporary flow list used by neigh update */ 106 refcount_t refcnt; 107 struct rcu_head rcu_head; 108 struct completion init_done; 109 struct completion del_hw_done; 110 int tunnel_id; /* the mapped tunnel id of this flow */ 111 struct mlx5_flow_attr *attr; 112 }; 113 114 u8 mlx5e_tc_get_ip_version(struct mlx5_flow_spec *spec, bool outer); 115 116 struct mlx5_flow_handle * 117 mlx5e_tc_offload_fdb_rules(struct mlx5_eswitch *esw, 118 struct mlx5e_tc_flow *flow, 119 struct mlx5_flow_spec *spec, 120 struct mlx5_flow_attr *attr); 121 122 bool mlx5e_is_eswitch_flow(struct mlx5e_tc_flow *flow); 123 bool mlx5e_is_ft_flow(struct mlx5e_tc_flow *flow); 124 bool mlx5e_is_offloaded_flow(struct mlx5e_tc_flow *flow); 125 int mlx5e_get_flow_namespace(struct mlx5e_tc_flow *flow); 126 bool mlx5e_same_hw_devs(struct mlx5e_priv *priv, struct mlx5e_priv *peer_priv); 127 128 static inline void __flow_flag_set(struct mlx5e_tc_flow *flow, unsigned long flag) 129 { 130 /* Complete all memory stores before setting bit. */ 131 smp_mb__before_atomic(); 132 set_bit(flag, &flow->flags); 133 } 134 135 #define flow_flag_set(flow, flag) __flow_flag_set(flow, MLX5E_TC_FLOW_FLAG_##flag) 136 137 static inline bool __flow_flag_test_and_set(struct mlx5e_tc_flow *flow, 138 unsigned long flag) 139 { 140 /* test_and_set_bit() provides all necessary barriers */ 141 return test_and_set_bit(flag, &flow->flags); 142 } 143 144 #define flow_flag_test_and_set(flow, flag) \ 145 __flow_flag_test_and_set(flow, \ 146 MLX5E_TC_FLOW_FLAG_##flag) 147 148 static inline void __flow_flag_clear(struct mlx5e_tc_flow *flow, unsigned long flag) 149 { 150 /* Complete all memory stores before clearing bit. */ 151 smp_mb__before_atomic(); 152 clear_bit(flag, &flow->flags); 153 } 154 155 #define flow_flag_clear(flow, flag) __flow_flag_clear(flow, \ 156 MLX5E_TC_FLOW_FLAG_##flag) 157 158 static inline bool __flow_flag_test(struct mlx5e_tc_flow *flow, unsigned long flag) 159 { 160 bool ret = test_bit(flag, &flow->flags); 161 162 /* Read fields of flow structure only after checking flags. */ 163 smp_mb__after_atomic(); 164 return ret; 165 } 166 167 #define flow_flag_test(flow, flag) __flow_flag_test(flow, \ 168 MLX5E_TC_FLOW_FLAG_##flag) 169 170 void mlx5e_tc_unoffload_from_slow_path(struct mlx5_eswitch *esw, 171 struct mlx5e_tc_flow *flow); 172 struct mlx5_flow_handle * 173 mlx5e_tc_offload_to_slow_path(struct mlx5_eswitch *esw, 174 struct mlx5e_tc_flow *flow, 175 struct mlx5_flow_spec *spec); 176 void mlx5e_tc_unoffload_fdb_rules(struct mlx5_eswitch *esw, 177 struct mlx5e_tc_flow *flow, 178 struct mlx5_flow_attr *attr); 179 180 struct mlx5e_tc_flow *mlx5e_flow_get(struct mlx5e_tc_flow *flow); 181 void mlx5e_flow_put(struct mlx5e_priv *priv, struct mlx5e_tc_flow *flow); 182 183 struct mlx5_fc *mlx5e_tc_get_counter(struct mlx5e_tc_flow *flow); 184 185 struct mlx5e_tc_int_port_priv * 186 mlx5e_get_int_port_priv(struct mlx5e_priv *priv); 187 188 void *mlx5e_get_match_headers_value(u32 flags, struct mlx5_flow_spec *spec); 189 void *mlx5e_get_match_headers_criteria(u32 flags, struct mlx5_flow_spec *spec); 190 191 #endif /* __MLX5_EN_TC_PRIV_H__ */ 192