1 /* SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 */ 2 /* Copyright (c) 2017-2018 Mellanox Technologies. All rights reserved */ 3 4 #ifndef _MLXSW_ROUTER_H_ 5 #define _MLXSW_ROUTER_H_ 6 7 #include "spectrum.h" 8 #include "reg.h" 9 10 struct mlxsw_sp_router_nve_decap { 11 u32 ul_tb_id; 12 u32 tunnel_index; 13 enum mlxsw_sp_l3proto ul_proto; 14 union mlxsw_sp_l3addr ul_sip; 15 u8 valid:1; 16 }; 17 18 struct mlxsw_sp_fib_entry_op_ctx { 19 u8 bulk_ok:1, /* Indicate to the low-level op it is ok to bulk 20 * the actual entry with the one that is the next 21 * in queue. 22 */ 23 initialized:1; /* Bit that the low-level op sets in case 24 * the context priv is initialized. 25 */ 26 struct list_head fib_entry_priv_list; 27 unsigned long event; 28 unsigned long ll_priv[]; 29 }; 30 31 static inline void 32 mlxsw_sp_fib_entry_op_ctx_clear(struct mlxsw_sp_fib_entry_op_ctx *op_ctx) 33 { 34 WARN_ON_ONCE(!list_empty(&op_ctx->fib_entry_priv_list)); 35 memset(op_ctx, 0, sizeof(*op_ctx)); 36 INIT_LIST_HEAD(&op_ctx->fib_entry_priv_list); 37 } 38 39 struct mlxsw_sp_router { 40 struct mlxsw_sp *mlxsw_sp; 41 struct mlxsw_sp_rif **rifs; 42 struct mlxsw_sp_vr *vrs; 43 struct rhashtable neigh_ht; 44 struct rhashtable nexthop_group_ht; 45 struct rhashtable nexthop_ht; 46 struct list_head nexthop_list; 47 struct { 48 /* One tree for each protocol: IPv4 and IPv6 */ 49 struct mlxsw_sp_lpm_tree *proto_trees[2]; 50 struct mlxsw_sp_lpm_tree *trees; 51 unsigned int tree_count; 52 } lpm; 53 struct { 54 struct delayed_work dw; 55 unsigned long interval; /* ms */ 56 } neighs_update; 57 struct delayed_work nexthop_probe_dw; 58 #define MLXSW_SP_UNRESOLVED_NH_PROBE_INTERVAL 5000 /* ms */ 59 struct list_head nexthop_neighs_list; 60 struct list_head ipip_list; 61 bool aborted; 62 struct notifier_block nexthop_nb; 63 struct notifier_block fib_nb; 64 struct notifier_block netevent_nb; 65 struct notifier_block inetaddr_nb; 66 struct notifier_block inet6addr_nb; 67 const struct mlxsw_sp_rif_ops **rif_ops_arr; 68 const struct mlxsw_sp_ipip_ops **ipip_ops_arr; 69 u32 adj_discard_index; 70 bool adj_discard_index_valid; 71 struct mlxsw_sp_router_nve_decap nve_decap_config; 72 struct mutex lock; /* Protects shared router resources */ 73 struct work_struct fib_event_work; 74 struct list_head fib_event_queue; 75 spinlock_t fib_event_queue_lock; /* Protects fib event queue list */ 76 /* One set of ops for each protocol: IPv4 and IPv6 */ 77 const struct mlxsw_sp_router_ll_ops *proto_ll_ops[MLXSW_SP_L3_PROTO_MAX]; 78 struct mlxsw_sp_fib_entry_op_ctx *ll_op_ctx; 79 u16 lb_rif_index; 80 struct mlxsw_sp_router_xm *xm; 81 }; 82 83 struct mlxsw_sp_fib_entry_priv { 84 refcount_t refcnt; 85 struct list_head list; /* Member in op_ctx->fib_entry_priv_list */ 86 unsigned long priv[]; 87 }; 88 89 enum mlxsw_sp_fib_entry_op { 90 MLXSW_SP_FIB_ENTRY_OP_WRITE, 91 MLXSW_SP_FIB_ENTRY_OP_UPDATE, 92 MLXSW_SP_FIB_ENTRY_OP_DELETE, 93 }; 94 95 /* Low-level router ops. Basically this is to handle the different 96 * register sets to work with ordinary and XM trees and FIB entries. 97 */ 98 struct mlxsw_sp_router_ll_ops { 99 int (*init)(struct mlxsw_sp *mlxsw_sp, u16 vr_id, 100 enum mlxsw_sp_l3proto proto); 101 int (*ralta_write)(struct mlxsw_sp *mlxsw_sp, char *xralta_pl); 102 int (*ralst_write)(struct mlxsw_sp *mlxsw_sp, char *xralst_pl); 103 int (*raltb_write)(struct mlxsw_sp *mlxsw_sp, char *xraltb_pl); 104 size_t fib_entry_op_ctx_size; 105 size_t fib_entry_priv_size; 106 void (*fib_entry_pack)(struct mlxsw_sp_fib_entry_op_ctx *op_ctx, 107 enum mlxsw_sp_l3proto proto, enum mlxsw_sp_fib_entry_op op, 108 u16 virtual_router, u8 prefix_len, unsigned char *addr, 109 struct mlxsw_sp_fib_entry_priv *priv); 110 void (*fib_entry_act_remote_pack)(struct mlxsw_sp_fib_entry_op_ctx *op_ctx, 111 enum mlxsw_reg_ralue_trap_action trap_action, 112 u16 trap_id, u32 adjacency_index, u16 ecmp_size); 113 void (*fib_entry_act_local_pack)(struct mlxsw_sp_fib_entry_op_ctx *op_ctx, 114 enum mlxsw_reg_ralue_trap_action trap_action, 115 u16 trap_id, u16 local_erif); 116 void (*fib_entry_act_ip2me_pack)(struct mlxsw_sp_fib_entry_op_ctx *op_ctx); 117 void (*fib_entry_act_ip2me_tun_pack)(struct mlxsw_sp_fib_entry_op_ctx *op_ctx, 118 u32 tunnel_ptr); 119 int (*fib_entry_commit)(struct mlxsw_sp *mlxsw_sp, 120 struct mlxsw_sp_fib_entry_op_ctx *op_ctx, 121 bool *postponed_for_bulk); 122 bool (*fib_entry_is_committed)(struct mlxsw_sp_fib_entry_priv *priv); 123 }; 124 125 struct mlxsw_sp_rif_ipip_lb; 126 struct mlxsw_sp_rif_ipip_lb_config { 127 enum mlxsw_reg_ritr_loopback_ipip_type lb_ipipt; 128 u32 okey; 129 enum mlxsw_sp_l3proto ul_protocol; /* Underlay. */ 130 union mlxsw_sp_l3addr saddr; 131 }; 132 133 enum mlxsw_sp_rif_counter_dir { 134 MLXSW_SP_RIF_COUNTER_INGRESS, 135 MLXSW_SP_RIF_COUNTER_EGRESS, 136 }; 137 138 struct mlxsw_sp_neigh_entry; 139 struct mlxsw_sp_nexthop; 140 struct mlxsw_sp_ipip_entry; 141 142 struct mlxsw_sp_rif *mlxsw_sp_rif_by_index(const struct mlxsw_sp *mlxsw_sp, 143 u16 rif_index); 144 u16 mlxsw_sp_rif_index(const struct mlxsw_sp_rif *rif); 145 u16 mlxsw_sp_ipip_lb_rif_index(const struct mlxsw_sp_rif_ipip_lb *rif); 146 u16 mlxsw_sp_ipip_lb_ul_vr_id(const struct mlxsw_sp_rif_ipip_lb *rif); 147 u16 mlxsw_sp_ipip_lb_ul_rif_id(const struct mlxsw_sp_rif_ipip_lb *lb_rif); 148 u32 mlxsw_sp_ipip_dev_ul_tb_id(const struct net_device *ol_dev); 149 int mlxsw_sp_rif_dev_ifindex(const struct mlxsw_sp_rif *rif); 150 const struct net_device *mlxsw_sp_rif_dev(const struct mlxsw_sp_rif *rif); 151 int mlxsw_sp_rif_counter_value_get(struct mlxsw_sp *mlxsw_sp, 152 struct mlxsw_sp_rif *rif, 153 enum mlxsw_sp_rif_counter_dir dir, 154 u64 *cnt); 155 void mlxsw_sp_rif_counter_free(struct mlxsw_sp *mlxsw_sp, 156 struct mlxsw_sp_rif *rif, 157 enum mlxsw_sp_rif_counter_dir dir); 158 int mlxsw_sp_rif_counter_alloc(struct mlxsw_sp *mlxsw_sp, 159 struct mlxsw_sp_rif *rif, 160 enum mlxsw_sp_rif_counter_dir dir); 161 struct mlxsw_sp_neigh_entry * 162 mlxsw_sp_rif_neigh_next(struct mlxsw_sp_rif *rif, 163 struct mlxsw_sp_neigh_entry *neigh_entry); 164 int mlxsw_sp_neigh_entry_type(struct mlxsw_sp_neigh_entry *neigh_entry); 165 unsigned char * 166 mlxsw_sp_neigh_entry_ha(struct mlxsw_sp_neigh_entry *neigh_entry); 167 u32 mlxsw_sp_neigh4_entry_dip(struct mlxsw_sp_neigh_entry *neigh_entry); 168 struct in6_addr * 169 mlxsw_sp_neigh6_entry_dip(struct mlxsw_sp_neigh_entry *neigh_entry); 170 171 #define mlxsw_sp_rif_neigh_for_each(neigh_entry, rif) \ 172 for (neigh_entry = mlxsw_sp_rif_neigh_next(rif, NULL); neigh_entry; \ 173 neigh_entry = mlxsw_sp_rif_neigh_next(rif, neigh_entry)) 174 int mlxsw_sp_neigh_counter_get(struct mlxsw_sp *mlxsw_sp, 175 struct mlxsw_sp_neigh_entry *neigh_entry, 176 u64 *p_counter); 177 void 178 mlxsw_sp_neigh_entry_counter_update(struct mlxsw_sp *mlxsw_sp, 179 struct mlxsw_sp_neigh_entry *neigh_entry, 180 bool adding); 181 bool mlxsw_sp_neigh_ipv6_ignore(struct mlxsw_sp_neigh_entry *neigh_entry); 182 int __mlxsw_sp_ipip_entry_update_tunnel(struct mlxsw_sp *mlxsw_sp, 183 struct mlxsw_sp_ipip_entry *ipip_entry, 184 bool recreate_loopback, 185 bool keep_encap, 186 bool update_nexthops, 187 struct netlink_ext_ack *extack); 188 void mlxsw_sp_ipip_entry_demote_tunnel(struct mlxsw_sp *mlxsw_sp, 189 struct mlxsw_sp_ipip_entry *ipip_entry); 190 bool 191 mlxsw_sp_ipip_demote_tunnel_by_saddr(struct mlxsw_sp *mlxsw_sp, 192 enum mlxsw_sp_l3proto ul_proto, 193 union mlxsw_sp_l3addr saddr, 194 u32 ul_tb_id, 195 const struct mlxsw_sp_ipip_entry *except); 196 struct mlxsw_sp_nexthop *mlxsw_sp_nexthop_next(struct mlxsw_sp_router *router, 197 struct mlxsw_sp_nexthop *nh); 198 bool mlxsw_sp_nexthop_offload(struct mlxsw_sp_nexthop *nh); 199 unsigned char *mlxsw_sp_nexthop_ha(struct mlxsw_sp_nexthop *nh); 200 int mlxsw_sp_nexthop_indexes(struct mlxsw_sp_nexthop *nh, u32 *p_adj_index, 201 u32 *p_adj_size, u32 *p_adj_hash_index); 202 struct mlxsw_sp_rif *mlxsw_sp_nexthop_rif(struct mlxsw_sp_nexthop *nh); 203 bool mlxsw_sp_nexthop_group_has_ipip(struct mlxsw_sp_nexthop *nh); 204 bool mlxsw_sp_nexthop_is_discard(const struct mlxsw_sp_nexthop *nh); 205 #define mlxsw_sp_nexthop_for_each(nh, router) \ 206 for (nh = mlxsw_sp_nexthop_next(router, NULL); nh; \ 207 nh = mlxsw_sp_nexthop_next(router, nh)) 208 int mlxsw_sp_nexthop_counter_get(struct mlxsw_sp *mlxsw_sp, 209 struct mlxsw_sp_nexthop *nh, u64 *p_counter); 210 int mlxsw_sp_nexthop_update(struct mlxsw_sp *mlxsw_sp, u32 adj_index, 211 struct mlxsw_sp_nexthop *nh); 212 void mlxsw_sp_nexthop_counter_alloc(struct mlxsw_sp *mlxsw_sp, 213 struct mlxsw_sp_nexthop *nh); 214 void mlxsw_sp_nexthop_counter_free(struct mlxsw_sp *mlxsw_sp, 215 struct mlxsw_sp_nexthop *nh); 216 217 static inline bool mlxsw_sp_l3addr_eq(const union mlxsw_sp_l3addr *addr1, 218 const union mlxsw_sp_l3addr *addr2) 219 { 220 return !memcmp(addr1, addr2, sizeof(*addr1)); 221 } 222 223 int mlxsw_sp_ipip_ecn_encap_init(struct mlxsw_sp *mlxsw_sp); 224 int mlxsw_sp_ipip_ecn_decap_init(struct mlxsw_sp *mlxsw_sp); 225 226 extern const struct mlxsw_sp_router_ll_ops mlxsw_sp_router_ll_xm_ops; 227 228 int mlxsw_sp_router_xm_init(struct mlxsw_sp *mlxsw_sp); 229 void mlxsw_sp_router_xm_fini(struct mlxsw_sp *mlxsw_sp); 230 bool mlxsw_sp_router_xm_ipv4_is_supported(const struct mlxsw_sp *mlxsw_sp); 231 232 #endif /* _MLXSW_ROUTER_H_*/ 233