1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 3 * include/net/switchdev.h - Switch device API 4 * Copyright (c) 2014-2015 Jiri Pirko <jiri@resnulli.us> 5 * Copyright (c) 2014-2015 Scott Feldman <sfeldma@gmail.com> 6 */ 7 #ifndef _LINUX_SWITCHDEV_H_ 8 #define _LINUX_SWITCHDEV_H_ 9 10 #include <linux/netdevice.h> 11 #include <linux/notifier.h> 12 #include <linux/list.h> 13 #include <net/ip_fib.h> 14 15 #define SWITCHDEV_F_NO_RECURSE BIT(0) 16 #define SWITCHDEV_F_SKIP_EOPNOTSUPP BIT(1) 17 #define SWITCHDEV_F_DEFER BIT(2) 18 19 struct switchdev_trans { 20 bool ph_prepare; 21 }; 22 23 static inline bool switchdev_trans_ph_prepare(struct switchdev_trans *trans) 24 { 25 return trans && trans->ph_prepare; 26 } 27 28 static inline bool switchdev_trans_ph_commit(struct switchdev_trans *trans) 29 { 30 return trans && !trans->ph_prepare; 31 } 32 33 enum switchdev_attr_id { 34 SWITCHDEV_ATTR_ID_UNDEFINED, 35 SWITCHDEV_ATTR_ID_PORT_STP_STATE, 36 SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS, 37 SWITCHDEV_ATTR_ID_PORT_PRE_BRIDGE_FLAGS, 38 SWITCHDEV_ATTR_ID_PORT_MROUTER, 39 SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME, 40 SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING, 41 SWITCHDEV_ATTR_ID_BRIDGE_MC_DISABLED, 42 SWITCHDEV_ATTR_ID_BRIDGE_MROUTER, 43 #if IS_ENABLED(CONFIG_BRIDGE_MRP) 44 SWITCHDEV_ATTR_ID_MRP_PORT_STATE, 45 SWITCHDEV_ATTR_ID_MRP_PORT_ROLE, 46 #endif 47 }; 48 49 struct switchdev_attr { 50 struct net_device *orig_dev; 51 enum switchdev_attr_id id; 52 u32 flags; 53 void *complete_priv; 54 void (*complete)(struct net_device *dev, int err, void *priv); 55 union { 56 u8 stp_state; /* PORT_STP_STATE */ 57 unsigned long brport_flags; /* PORT_{PRE}_BRIDGE_FLAGS */ 58 bool mrouter; /* PORT_MROUTER */ 59 clock_t ageing_time; /* BRIDGE_AGEING_TIME */ 60 bool vlan_filtering; /* BRIDGE_VLAN_FILTERING */ 61 bool mc_disabled; /* MC_DISABLED */ 62 #if IS_ENABLED(CONFIG_BRIDGE_MRP) 63 u8 mrp_port_state; /* MRP_PORT_STATE */ 64 u8 mrp_port_role; /* MRP_PORT_ROLE */ 65 #endif 66 } u; 67 }; 68 69 enum switchdev_obj_id { 70 SWITCHDEV_OBJ_ID_UNDEFINED, 71 SWITCHDEV_OBJ_ID_PORT_VLAN, 72 SWITCHDEV_OBJ_ID_PORT_MDB, 73 SWITCHDEV_OBJ_ID_HOST_MDB, 74 #if IS_ENABLED(CONFIG_BRIDGE_MRP) 75 SWITCHDEV_OBJ_ID_MRP, 76 SWITCHDEV_OBJ_ID_RING_TEST_MRP, 77 SWITCHDEV_OBJ_ID_RING_ROLE_MRP, 78 SWITCHDEV_OBJ_ID_RING_STATE_MRP, 79 SWITCHDEV_OBJ_ID_IN_TEST_MRP, 80 SWITCHDEV_OBJ_ID_IN_ROLE_MRP, 81 SWITCHDEV_OBJ_ID_IN_STATE_MRP, 82 83 #endif 84 }; 85 86 struct switchdev_obj { 87 struct net_device *orig_dev; 88 enum switchdev_obj_id id; 89 u32 flags; 90 void *complete_priv; 91 void (*complete)(struct net_device *dev, int err, void *priv); 92 }; 93 94 /* SWITCHDEV_OBJ_ID_PORT_VLAN */ 95 struct switchdev_obj_port_vlan { 96 struct switchdev_obj obj; 97 u16 flags; 98 u16 vid_begin; 99 u16 vid_end; 100 }; 101 102 #define SWITCHDEV_OBJ_PORT_VLAN(OBJ) \ 103 container_of((OBJ), struct switchdev_obj_port_vlan, obj) 104 105 /* SWITCHDEV_OBJ_ID_PORT_MDB */ 106 struct switchdev_obj_port_mdb { 107 struct switchdev_obj obj; 108 unsigned char addr[ETH_ALEN]; 109 u16 vid; 110 }; 111 112 #define SWITCHDEV_OBJ_PORT_MDB(OBJ) \ 113 container_of((OBJ), struct switchdev_obj_port_mdb, obj) 114 115 116 #if IS_ENABLED(CONFIG_BRIDGE_MRP) 117 /* SWITCHDEV_OBJ_ID_MRP */ 118 struct switchdev_obj_mrp { 119 struct switchdev_obj obj; 120 struct net_device *p_port; 121 struct net_device *s_port; 122 u32 ring_id; 123 u16 prio; 124 }; 125 126 #define SWITCHDEV_OBJ_MRP(OBJ) \ 127 container_of((OBJ), struct switchdev_obj_mrp, obj) 128 129 /* SWITCHDEV_OBJ_ID_RING_TEST_MRP */ 130 struct switchdev_obj_ring_test_mrp { 131 struct switchdev_obj obj; 132 /* The value is in us and a value of 0 represents to stop */ 133 u32 interval; 134 u8 max_miss; 135 u32 ring_id; 136 u32 period; 137 bool monitor; 138 }; 139 140 #define SWITCHDEV_OBJ_RING_TEST_MRP(OBJ) \ 141 container_of((OBJ), struct switchdev_obj_ring_test_mrp, obj) 142 143 /* SWICHDEV_OBJ_ID_RING_ROLE_MRP */ 144 struct switchdev_obj_ring_role_mrp { 145 struct switchdev_obj obj; 146 u8 ring_role; 147 u32 ring_id; 148 }; 149 150 #define SWITCHDEV_OBJ_RING_ROLE_MRP(OBJ) \ 151 container_of((OBJ), struct switchdev_obj_ring_role_mrp, obj) 152 153 struct switchdev_obj_ring_state_mrp { 154 struct switchdev_obj obj; 155 u8 ring_state; 156 u32 ring_id; 157 }; 158 159 #define SWITCHDEV_OBJ_RING_STATE_MRP(OBJ) \ 160 container_of((OBJ), struct switchdev_obj_ring_state_mrp, obj) 161 162 /* SWITCHDEV_OBJ_ID_IN_TEST_MRP */ 163 struct switchdev_obj_in_test_mrp { 164 struct switchdev_obj obj; 165 /* The value is in us and a value of 0 represents to stop */ 166 u32 interval; 167 u32 in_id; 168 u32 period; 169 u8 max_miss; 170 }; 171 172 #define SWITCHDEV_OBJ_IN_TEST_MRP(OBJ) \ 173 container_of((OBJ), struct switchdev_obj_in_test_mrp, obj) 174 175 /* SWICHDEV_OBJ_ID_IN_ROLE_MRP */ 176 struct switchdev_obj_in_role_mrp { 177 struct switchdev_obj obj; 178 struct net_device *i_port; 179 u32 ring_id; 180 u16 in_id; 181 u8 in_role; 182 }; 183 184 #define SWITCHDEV_OBJ_IN_ROLE_MRP(OBJ) \ 185 container_of((OBJ), struct switchdev_obj_in_role_mrp, obj) 186 187 struct switchdev_obj_in_state_mrp { 188 struct switchdev_obj obj; 189 u32 in_id; 190 u8 in_state; 191 }; 192 193 #define SWITCHDEV_OBJ_IN_STATE_MRP(OBJ) \ 194 container_of((OBJ), struct switchdev_obj_in_state_mrp, obj) 195 196 #endif 197 198 typedef int switchdev_obj_dump_cb_t(struct switchdev_obj *obj); 199 200 enum switchdev_notifier_type { 201 SWITCHDEV_FDB_ADD_TO_BRIDGE = 1, 202 SWITCHDEV_FDB_DEL_TO_BRIDGE, 203 SWITCHDEV_FDB_ADD_TO_DEVICE, 204 SWITCHDEV_FDB_DEL_TO_DEVICE, 205 SWITCHDEV_FDB_OFFLOADED, 206 SWITCHDEV_FDB_FLUSH_TO_BRIDGE, 207 208 SWITCHDEV_PORT_OBJ_ADD, /* Blocking. */ 209 SWITCHDEV_PORT_OBJ_DEL, /* Blocking. */ 210 SWITCHDEV_PORT_ATTR_SET, /* May be blocking . */ 211 212 SWITCHDEV_VXLAN_FDB_ADD_TO_BRIDGE, 213 SWITCHDEV_VXLAN_FDB_DEL_TO_BRIDGE, 214 SWITCHDEV_VXLAN_FDB_ADD_TO_DEVICE, 215 SWITCHDEV_VXLAN_FDB_DEL_TO_DEVICE, 216 SWITCHDEV_VXLAN_FDB_OFFLOADED, 217 }; 218 219 struct switchdev_notifier_info { 220 struct net_device *dev; 221 struct netlink_ext_ack *extack; 222 }; 223 224 struct switchdev_notifier_fdb_info { 225 struct switchdev_notifier_info info; /* must be first */ 226 const unsigned char *addr; 227 u16 vid; 228 u8 added_by_user:1, 229 offloaded:1; 230 }; 231 232 struct switchdev_notifier_port_obj_info { 233 struct switchdev_notifier_info info; /* must be first */ 234 const struct switchdev_obj *obj; 235 struct switchdev_trans *trans; 236 bool handled; 237 }; 238 239 struct switchdev_notifier_port_attr_info { 240 struct switchdev_notifier_info info; /* must be first */ 241 const struct switchdev_attr *attr; 242 struct switchdev_trans *trans; 243 bool handled; 244 }; 245 246 static inline struct net_device * 247 switchdev_notifier_info_to_dev(const struct switchdev_notifier_info *info) 248 { 249 return info->dev; 250 } 251 252 static inline struct netlink_ext_ack * 253 switchdev_notifier_info_to_extack(const struct switchdev_notifier_info *info) 254 { 255 return info->extack; 256 } 257 258 #ifdef CONFIG_NET_SWITCHDEV 259 260 void switchdev_deferred_process(void); 261 int switchdev_port_attr_set(struct net_device *dev, 262 const struct switchdev_attr *attr); 263 int switchdev_port_obj_add(struct net_device *dev, 264 const struct switchdev_obj *obj, 265 struct netlink_ext_ack *extack); 266 int switchdev_port_obj_del(struct net_device *dev, 267 const struct switchdev_obj *obj); 268 269 int register_switchdev_notifier(struct notifier_block *nb); 270 int unregister_switchdev_notifier(struct notifier_block *nb); 271 int call_switchdev_notifiers(unsigned long val, struct net_device *dev, 272 struct switchdev_notifier_info *info, 273 struct netlink_ext_ack *extack); 274 275 int register_switchdev_blocking_notifier(struct notifier_block *nb); 276 int unregister_switchdev_blocking_notifier(struct notifier_block *nb); 277 int call_switchdev_blocking_notifiers(unsigned long val, struct net_device *dev, 278 struct switchdev_notifier_info *info, 279 struct netlink_ext_ack *extack); 280 281 void switchdev_port_fwd_mark_set(struct net_device *dev, 282 struct net_device *group_dev, 283 bool joining); 284 285 int switchdev_handle_port_obj_add(struct net_device *dev, 286 struct switchdev_notifier_port_obj_info *port_obj_info, 287 bool (*check_cb)(const struct net_device *dev), 288 int (*add_cb)(struct net_device *dev, 289 const struct switchdev_obj *obj, 290 struct switchdev_trans *trans, 291 struct netlink_ext_ack *extack)); 292 int switchdev_handle_port_obj_del(struct net_device *dev, 293 struct switchdev_notifier_port_obj_info *port_obj_info, 294 bool (*check_cb)(const struct net_device *dev), 295 int (*del_cb)(struct net_device *dev, 296 const struct switchdev_obj *obj)); 297 298 int switchdev_handle_port_attr_set(struct net_device *dev, 299 struct switchdev_notifier_port_attr_info *port_attr_info, 300 bool (*check_cb)(const struct net_device *dev), 301 int (*set_cb)(struct net_device *dev, 302 const struct switchdev_attr *attr, 303 struct switchdev_trans *trans)); 304 #else 305 306 static inline void switchdev_deferred_process(void) 307 { 308 } 309 310 static inline int switchdev_port_attr_set(struct net_device *dev, 311 const struct switchdev_attr *attr) 312 { 313 return -EOPNOTSUPP; 314 } 315 316 static inline int switchdev_port_obj_add(struct net_device *dev, 317 const struct switchdev_obj *obj, 318 struct netlink_ext_ack *extack) 319 { 320 return -EOPNOTSUPP; 321 } 322 323 static inline int switchdev_port_obj_del(struct net_device *dev, 324 const struct switchdev_obj *obj) 325 { 326 return -EOPNOTSUPP; 327 } 328 329 static inline int register_switchdev_notifier(struct notifier_block *nb) 330 { 331 return 0; 332 } 333 334 static inline int unregister_switchdev_notifier(struct notifier_block *nb) 335 { 336 return 0; 337 } 338 339 static inline int call_switchdev_notifiers(unsigned long val, 340 struct net_device *dev, 341 struct switchdev_notifier_info *info, 342 struct netlink_ext_ack *extack) 343 { 344 return NOTIFY_DONE; 345 } 346 347 static inline int 348 register_switchdev_blocking_notifier(struct notifier_block *nb) 349 { 350 return 0; 351 } 352 353 static inline int 354 unregister_switchdev_blocking_notifier(struct notifier_block *nb) 355 { 356 return 0; 357 } 358 359 static inline int 360 call_switchdev_blocking_notifiers(unsigned long val, 361 struct net_device *dev, 362 struct switchdev_notifier_info *info, 363 struct netlink_ext_ack *extack) 364 { 365 return NOTIFY_DONE; 366 } 367 368 static inline int 369 switchdev_handle_port_obj_add(struct net_device *dev, 370 struct switchdev_notifier_port_obj_info *port_obj_info, 371 bool (*check_cb)(const struct net_device *dev), 372 int (*add_cb)(struct net_device *dev, 373 const struct switchdev_obj *obj, 374 struct switchdev_trans *trans, 375 struct netlink_ext_ack *extack)) 376 { 377 return 0; 378 } 379 380 static inline int 381 switchdev_handle_port_obj_del(struct net_device *dev, 382 struct switchdev_notifier_port_obj_info *port_obj_info, 383 bool (*check_cb)(const struct net_device *dev), 384 int (*del_cb)(struct net_device *dev, 385 const struct switchdev_obj *obj)) 386 { 387 return 0; 388 } 389 390 static inline int 391 switchdev_handle_port_attr_set(struct net_device *dev, 392 struct switchdev_notifier_port_attr_info *port_attr_info, 393 bool (*check_cb)(const struct net_device *dev), 394 int (*set_cb)(struct net_device *dev, 395 const struct switchdev_attr *attr, 396 struct switchdev_trans *trans)) 397 { 398 return 0; 399 } 400 #endif 401 402 #endif /* _LINUX_SWITCHDEV_H_ */ 403