1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 3 * Linux ethernet bridge 4 * 5 * Authors: 6 * Lennert Buytenhek <buytenh@gnu.org> 7 */ 8 9 #ifndef _BR_PRIVATE_H 10 #define _BR_PRIVATE_H 11 12 #include <linux/netdevice.h> 13 #include <linux/if_bridge.h> 14 #include <linux/netpoll.h> 15 #include <linux/u64_stats_sync.h> 16 #include <net/route.h> 17 #include <net/ip6_fib.h> 18 #include <linux/if_vlan.h> 19 #include <linux/rhashtable.h> 20 #include <linux/refcount.h> 21 22 #define BR_HASH_BITS 8 23 #define BR_HASH_SIZE (1 << BR_HASH_BITS) 24 25 #define BR_HOLD_TIME (1*HZ) 26 27 #define BR_PORT_BITS 10 28 #define BR_MAX_PORTS (1<<BR_PORT_BITS) 29 30 #define BR_MULTICAST_DEFAULT_HASH_MAX 4096 31 32 #define BR_HWDOM_MAX BITS_PER_LONG 33 34 #define BR_VERSION "2.3" 35 36 /* Control of forwarding link local multicast */ 37 #define BR_GROUPFWD_DEFAULT 0 38 /* Don't allow forwarding of control protocols like STP, MAC PAUSE and LACP */ 39 enum { 40 BR_GROUPFWD_STP = BIT(0), 41 BR_GROUPFWD_MACPAUSE = BIT(1), 42 BR_GROUPFWD_LACP = BIT(2), 43 }; 44 45 #define BR_GROUPFWD_RESTRICTED (BR_GROUPFWD_STP | BR_GROUPFWD_MACPAUSE | \ 46 BR_GROUPFWD_LACP) 47 /* The Nearest Customer Bridge Group Address, 01-80-C2-00-00-[00,0B,0C,0D,0F] */ 48 #define BR_GROUPFWD_8021AD 0xB801u 49 50 /* Path to usermode spanning tree program */ 51 #define BR_STP_PROG "/sbin/bridge-stp" 52 53 #define BR_FDB_NOTIFY_SETTABLE_BITS (FDB_NOTIFY_BIT | FDB_NOTIFY_INACTIVE_BIT) 54 55 typedef struct bridge_id bridge_id; 56 typedef struct mac_addr mac_addr; 57 typedef __u16 port_id; 58 59 struct bridge_id { 60 unsigned char prio[2]; 61 unsigned char addr[ETH_ALEN]; 62 }; 63 64 struct mac_addr { 65 unsigned char addr[ETH_ALEN]; 66 }; 67 68 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 69 /* our own querier */ 70 struct bridge_mcast_own_query { 71 struct timer_list timer; 72 u32 startup_sent; 73 }; 74 75 /* other querier */ 76 struct bridge_mcast_other_query { 77 struct timer_list timer; 78 unsigned long delay_time; 79 }; 80 81 /* selected querier */ 82 struct bridge_mcast_querier { 83 struct br_ip addr; 84 struct net_bridge_port __rcu *port; 85 }; 86 87 /* IGMP/MLD statistics */ 88 struct bridge_mcast_stats { 89 struct br_mcast_stats mstats; 90 struct u64_stats_sync syncp; 91 }; 92 #endif 93 94 /* net_bridge_mcast_port must be always defined due to forwarding stubs */ 95 struct net_bridge_mcast_port { 96 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 97 struct net_bridge_port *port; 98 struct net_bridge_vlan *vlan; 99 100 struct bridge_mcast_own_query ip4_own_query; 101 struct timer_list ip4_mc_router_timer; 102 struct hlist_node ip4_rlist; 103 #if IS_ENABLED(CONFIG_IPV6) 104 struct bridge_mcast_own_query ip6_own_query; 105 struct timer_list ip6_mc_router_timer; 106 struct hlist_node ip6_rlist; 107 #endif /* IS_ENABLED(CONFIG_IPV6) */ 108 unsigned char multicast_router; 109 #endif /* CONFIG_BRIDGE_IGMP_SNOOPING */ 110 }; 111 112 /* net_bridge_mcast must be always defined due to forwarding stubs */ 113 struct net_bridge_mcast { 114 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 115 struct net_bridge *br; 116 struct net_bridge_vlan *vlan; 117 118 u32 multicast_last_member_count; 119 u32 multicast_startup_query_count; 120 121 u8 multicast_igmp_version; 122 u8 multicast_router; 123 #if IS_ENABLED(CONFIG_IPV6) 124 u8 multicast_mld_version; 125 #endif 126 unsigned long multicast_last_member_interval; 127 unsigned long multicast_membership_interval; 128 unsigned long multicast_querier_interval; 129 unsigned long multicast_query_interval; 130 unsigned long multicast_query_response_interval; 131 unsigned long multicast_startup_query_interval; 132 struct hlist_head ip4_mc_router_list; 133 struct timer_list ip4_mc_router_timer; 134 struct bridge_mcast_other_query ip4_other_query; 135 struct bridge_mcast_own_query ip4_own_query; 136 struct bridge_mcast_querier ip4_querier; 137 #if IS_ENABLED(CONFIG_IPV6) 138 struct hlist_head ip6_mc_router_list; 139 struct timer_list ip6_mc_router_timer; 140 struct bridge_mcast_other_query ip6_other_query; 141 struct bridge_mcast_own_query ip6_own_query; 142 struct bridge_mcast_querier ip6_querier; 143 #endif /* IS_ENABLED(CONFIG_IPV6) */ 144 #endif /* CONFIG_BRIDGE_IGMP_SNOOPING */ 145 }; 146 147 struct br_tunnel_info { 148 __be64 tunnel_id; 149 struct metadata_dst __rcu *tunnel_dst; 150 }; 151 152 /* private vlan flags */ 153 enum { 154 BR_VLFLAG_PER_PORT_STATS = BIT(0), 155 BR_VLFLAG_ADDED_BY_SWITCHDEV = BIT(1), 156 BR_VLFLAG_MCAST_ENABLED = BIT(2), 157 BR_VLFLAG_GLOBAL_MCAST_ENABLED = BIT(3), 158 }; 159 160 /** 161 * struct net_bridge_vlan - per-vlan entry 162 * 163 * @vnode: rhashtable member 164 * @vid: VLAN id 165 * @flags: bridge vlan flags 166 * @priv_flags: private (in-kernel) bridge vlan flags 167 * @state: STP state (e.g. blocking, learning, forwarding) 168 * @stats: per-cpu VLAN statistics 169 * @br: if MASTER flag set, this points to a bridge struct 170 * @port: if MASTER flag unset, this points to a port struct 171 * @refcnt: if MASTER flag set, this is bumped for each port referencing it 172 * @brvlan: if MASTER flag unset, this points to the global per-VLAN context 173 * for this VLAN entry 174 * @br_mcast_ctx: if MASTER flag set, this is the global vlan multicast context 175 * @port_mcast_ctx: if MASTER flag unset, this is the per-port/vlan multicast 176 * context 177 * @vlist: sorted list of VLAN entries 178 * @rcu: used for entry destruction 179 * 180 * This structure is shared between the global per-VLAN entries contained in 181 * the bridge rhashtable and the local per-port per-VLAN entries contained in 182 * the port's rhashtable. The union entries should be interpreted depending on 183 * the entry flags that are set. 184 */ 185 struct net_bridge_vlan { 186 struct rhash_head vnode; 187 struct rhash_head tnode; 188 u16 vid; 189 u16 flags; 190 u16 priv_flags; 191 u8 state; 192 struct pcpu_sw_netstats __percpu *stats; 193 union { 194 struct net_bridge *br; 195 struct net_bridge_port *port; 196 }; 197 union { 198 refcount_t refcnt; 199 struct net_bridge_vlan *brvlan; 200 }; 201 202 struct br_tunnel_info tinfo; 203 204 union { 205 struct net_bridge_mcast br_mcast_ctx; 206 struct net_bridge_mcast_port port_mcast_ctx; 207 }; 208 209 struct list_head vlist; 210 211 struct rcu_head rcu; 212 }; 213 214 /** 215 * struct net_bridge_vlan_group 216 * 217 * @vlan_hash: VLAN entry rhashtable 218 * @vlan_list: sorted VLAN entry list 219 * @num_vlans: number of total VLAN entries 220 * @pvid: PVID VLAN id 221 * @pvid_state: PVID's STP state (e.g. forwarding, learning, blocking) 222 * 223 * IMPORTANT: Be careful when checking if there're VLAN entries using list 224 * primitives because the bridge can have entries in its list which 225 * are just for global context but not for filtering, i.e. they have 226 * the master flag set but not the brentry flag. If you have to check 227 * if there're "real" entries in the bridge please test @num_vlans 228 */ 229 struct net_bridge_vlan_group { 230 struct rhashtable vlan_hash; 231 struct rhashtable tunnel_hash; 232 struct list_head vlan_list; 233 u16 num_vlans; 234 u16 pvid; 235 u8 pvid_state; 236 }; 237 238 /* bridge fdb flags */ 239 enum { 240 BR_FDB_LOCAL, 241 BR_FDB_STATIC, 242 BR_FDB_STICKY, 243 BR_FDB_ADDED_BY_USER, 244 BR_FDB_ADDED_BY_EXT_LEARN, 245 BR_FDB_OFFLOADED, 246 BR_FDB_NOTIFY, 247 BR_FDB_NOTIFY_INACTIVE 248 }; 249 250 struct net_bridge_fdb_key { 251 mac_addr addr; 252 u16 vlan_id; 253 }; 254 255 struct net_bridge_fdb_entry { 256 struct rhash_head rhnode; 257 struct net_bridge_port *dst; 258 259 struct net_bridge_fdb_key key; 260 struct hlist_node fdb_node; 261 unsigned long flags; 262 263 /* write-heavy members should not affect lookups */ 264 unsigned long updated ____cacheline_aligned_in_smp; 265 unsigned long used; 266 267 struct rcu_head rcu; 268 }; 269 270 #define MDB_PG_FLAGS_PERMANENT BIT(0) 271 #define MDB_PG_FLAGS_OFFLOAD BIT(1) 272 #define MDB_PG_FLAGS_FAST_LEAVE BIT(2) 273 #define MDB_PG_FLAGS_STAR_EXCL BIT(3) 274 #define MDB_PG_FLAGS_BLOCKED BIT(4) 275 276 #define PG_SRC_ENT_LIMIT 32 277 278 #define BR_SGRP_F_DELETE BIT(0) 279 #define BR_SGRP_F_SEND BIT(1) 280 #define BR_SGRP_F_INSTALLED BIT(2) 281 282 struct net_bridge_mcast_gc { 283 struct hlist_node gc_node; 284 void (*destroy)(struct net_bridge_mcast_gc *gc); 285 }; 286 287 struct net_bridge_group_src { 288 struct hlist_node node; 289 290 struct br_ip addr; 291 struct net_bridge_port_group *pg; 292 u8 flags; 293 u8 src_query_rexmit_cnt; 294 struct timer_list timer; 295 296 struct net_bridge *br; 297 struct net_bridge_mcast_gc mcast_gc; 298 struct rcu_head rcu; 299 }; 300 301 struct net_bridge_port_group_sg_key { 302 struct net_bridge_port *port; 303 struct br_ip addr; 304 }; 305 306 struct net_bridge_port_group { 307 struct net_bridge_port_group __rcu *next; 308 struct net_bridge_port_group_sg_key key; 309 unsigned char eth_addr[ETH_ALEN] __aligned(2); 310 unsigned char flags; 311 unsigned char filter_mode; 312 unsigned char grp_query_rexmit_cnt; 313 unsigned char rt_protocol; 314 315 struct hlist_head src_list; 316 unsigned int src_ents; 317 struct timer_list timer; 318 struct timer_list rexmit_timer; 319 struct hlist_node mglist; 320 struct rb_root eht_set_tree; 321 struct rb_root eht_host_tree; 322 323 struct rhash_head rhnode; 324 struct net_bridge_mcast_gc mcast_gc; 325 struct rcu_head rcu; 326 }; 327 328 struct net_bridge_mdb_entry { 329 struct rhash_head rhnode; 330 struct net_bridge *br; 331 struct net_bridge_port_group __rcu *ports; 332 struct br_ip addr; 333 bool host_joined; 334 335 struct timer_list timer; 336 struct hlist_node mdb_node; 337 338 struct net_bridge_mcast_gc mcast_gc; 339 struct rcu_head rcu; 340 }; 341 342 struct net_bridge_port { 343 struct net_bridge *br; 344 struct net_device *dev; 345 struct list_head list; 346 347 unsigned long flags; 348 #ifdef CONFIG_BRIDGE_VLAN_FILTERING 349 struct net_bridge_vlan_group __rcu *vlgrp; 350 #endif 351 struct net_bridge_port __rcu *backup_port; 352 353 /* STP */ 354 u8 priority; 355 u8 state; 356 u16 port_no; 357 unsigned char topology_change_ack; 358 unsigned char config_pending; 359 port_id port_id; 360 port_id designated_port; 361 bridge_id designated_root; 362 bridge_id designated_bridge; 363 u32 path_cost; 364 u32 designated_cost; 365 unsigned long designated_age; 366 367 struct timer_list forward_delay_timer; 368 struct timer_list hold_timer; 369 struct timer_list message_age_timer; 370 struct kobject kobj; 371 struct rcu_head rcu; 372 373 struct net_bridge_mcast_port multicast_ctx; 374 375 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 376 struct bridge_mcast_stats __percpu *mcast_stats; 377 378 u32 multicast_eht_hosts_limit; 379 u32 multicast_eht_hosts_cnt; 380 struct hlist_head mglist; 381 #endif 382 383 #ifdef CONFIG_SYSFS 384 char sysfs_name[IFNAMSIZ]; 385 #endif 386 387 #ifdef CONFIG_NET_POLL_CONTROLLER 388 struct netpoll *np; 389 #endif 390 #ifdef CONFIG_NET_SWITCHDEV 391 /* Identifier used to group ports that share the same switchdev 392 * hardware domain. 393 */ 394 int hwdom; 395 int offload_count; 396 struct netdev_phys_item_id ppid; 397 #endif 398 u16 group_fwd_mask; 399 u16 backup_redirected_cnt; 400 401 struct bridge_stp_xstats stp_xstats; 402 }; 403 404 #define kobj_to_brport(obj) container_of(obj, struct net_bridge_port, kobj) 405 406 #define br_auto_port(p) ((p)->flags & BR_AUTO_MASK) 407 #define br_promisc_port(p) ((p)->flags & BR_PROMISC) 408 409 static inline struct net_bridge_port *br_port_get_rcu(const struct net_device *dev) 410 { 411 return rcu_dereference(dev->rx_handler_data); 412 } 413 414 static inline struct net_bridge_port *br_port_get_rtnl(const struct net_device *dev) 415 { 416 return netif_is_bridge_port(dev) ? 417 rtnl_dereference(dev->rx_handler_data) : NULL; 418 } 419 420 static inline struct net_bridge_port *br_port_get_rtnl_rcu(const struct net_device *dev) 421 { 422 return netif_is_bridge_port(dev) ? 423 rcu_dereference_rtnl(dev->rx_handler_data) : NULL; 424 } 425 426 enum net_bridge_opts { 427 BROPT_VLAN_ENABLED, 428 BROPT_VLAN_STATS_ENABLED, 429 BROPT_NF_CALL_IPTABLES, 430 BROPT_NF_CALL_IP6TABLES, 431 BROPT_NF_CALL_ARPTABLES, 432 BROPT_GROUP_ADDR_SET, 433 BROPT_MULTICAST_ENABLED, 434 BROPT_MULTICAST_QUERIER, 435 BROPT_MULTICAST_QUERY_USE_IFADDR, 436 BROPT_MULTICAST_STATS_ENABLED, 437 BROPT_HAS_IPV6_ADDR, 438 BROPT_NEIGH_SUPPRESS_ENABLED, 439 BROPT_MTU_SET_BY_USER, 440 BROPT_VLAN_STATS_PER_PORT, 441 BROPT_NO_LL_LEARN, 442 BROPT_VLAN_BRIDGE_BINDING, 443 BROPT_MCAST_VLAN_SNOOPING_ENABLED, 444 }; 445 446 struct net_bridge { 447 spinlock_t lock; 448 spinlock_t hash_lock; 449 struct hlist_head frame_type_list; 450 struct net_device *dev; 451 unsigned long options; 452 /* These fields are accessed on each packet */ 453 #ifdef CONFIG_BRIDGE_VLAN_FILTERING 454 __be16 vlan_proto; 455 u16 default_pvid; 456 struct net_bridge_vlan_group __rcu *vlgrp; 457 #endif 458 459 struct rhashtable fdb_hash_tbl; 460 struct list_head port_list; 461 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER) 462 union { 463 struct rtable fake_rtable; 464 struct rt6_info fake_rt6_info; 465 }; 466 #endif 467 u16 group_fwd_mask; 468 u16 group_fwd_mask_required; 469 470 /* STP */ 471 bridge_id designated_root; 472 bridge_id bridge_id; 473 unsigned char topology_change; 474 unsigned char topology_change_detected; 475 u16 root_port; 476 unsigned long max_age; 477 unsigned long hello_time; 478 unsigned long forward_delay; 479 unsigned long ageing_time; 480 unsigned long bridge_max_age; 481 unsigned long bridge_hello_time; 482 unsigned long bridge_forward_delay; 483 unsigned long bridge_ageing_time; 484 u32 root_path_cost; 485 486 u8 group_addr[ETH_ALEN]; 487 488 enum { 489 BR_NO_STP, /* no spanning tree */ 490 BR_KERNEL_STP, /* old STP in kernel */ 491 BR_USER_STP, /* new RSTP in userspace */ 492 } stp_enabled; 493 494 struct net_bridge_mcast multicast_ctx; 495 496 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 497 struct bridge_mcast_stats __percpu *mcast_stats; 498 499 u32 hash_max; 500 501 spinlock_t multicast_lock; 502 503 struct rhashtable mdb_hash_tbl; 504 struct rhashtable sg_port_tbl; 505 506 struct hlist_head mcast_gc_list; 507 struct hlist_head mdb_list; 508 509 struct work_struct mcast_gc_work; 510 #endif 511 512 struct timer_list hello_timer; 513 struct timer_list tcn_timer; 514 struct timer_list topology_change_timer; 515 struct delayed_work gc_work; 516 struct kobject *ifobj; 517 u32 auto_cnt; 518 519 #ifdef CONFIG_NET_SWITCHDEV 520 /* Counter used to make sure that hardware domains get unique 521 * identifiers in case a bridge spans multiple switchdev instances. 522 */ 523 int last_hwdom; 524 /* Bit mask of hardware domain numbers in use */ 525 unsigned long busy_hwdoms; 526 #endif 527 struct hlist_head fdb_list; 528 529 #if IS_ENABLED(CONFIG_BRIDGE_MRP) 530 struct hlist_head mrp_list; 531 #endif 532 #if IS_ENABLED(CONFIG_BRIDGE_CFM) 533 struct hlist_head mep_list; 534 #endif 535 }; 536 537 struct br_input_skb_cb { 538 struct net_device *brdev; 539 540 u16 frag_max_size; 541 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 542 u8 igmp; 543 u8 mrouters_only:1; 544 #endif 545 u8 proxyarp_replied:1; 546 u8 src_port_isolated:1; 547 #ifdef CONFIG_BRIDGE_VLAN_FILTERING 548 u8 vlan_filtered:1; 549 #endif 550 #ifdef CONFIG_NETFILTER_FAMILY_BRIDGE 551 u8 br_netfilter_broute:1; 552 #endif 553 554 #ifdef CONFIG_NET_SWITCHDEV 555 /* The switchdev hardware domain from which this packet was received. 556 * If skb->offload_fwd_mark was set, then this packet was already 557 * forwarded by hardware to the other ports in the source hardware 558 * domain, otherwise it wasn't. 559 */ 560 int src_hwdom; 561 #endif 562 }; 563 564 #define BR_INPUT_SKB_CB(__skb) ((struct br_input_skb_cb *)(__skb)->cb) 565 566 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 567 # define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (BR_INPUT_SKB_CB(__skb)->mrouters_only) 568 #else 569 # define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (0) 570 #endif 571 572 #define br_printk(level, br, format, args...) \ 573 printk(level "%s: " format, (br)->dev->name, ##args) 574 575 #define br_err(__br, format, args...) \ 576 br_printk(KERN_ERR, __br, format, ##args) 577 #define br_warn(__br, format, args...) \ 578 br_printk(KERN_WARNING, __br, format, ##args) 579 #define br_notice(__br, format, args...) \ 580 br_printk(KERN_NOTICE, __br, format, ##args) 581 #define br_info(__br, format, args...) \ 582 br_printk(KERN_INFO, __br, format, ##args) 583 584 #define br_debug(br, format, args...) \ 585 pr_debug("%s: " format, (br)->dev->name, ##args) 586 587 /* called under bridge lock */ 588 static inline int br_is_root_bridge(const struct net_bridge *br) 589 { 590 return !memcmp(&br->bridge_id, &br->designated_root, 8); 591 } 592 593 /* check if a VLAN entry is global */ 594 static inline bool br_vlan_is_master(const struct net_bridge_vlan *v) 595 { 596 return v->flags & BRIDGE_VLAN_INFO_MASTER; 597 } 598 599 /* check if a VLAN entry is used by the bridge */ 600 static inline bool br_vlan_is_brentry(const struct net_bridge_vlan *v) 601 { 602 return v->flags & BRIDGE_VLAN_INFO_BRENTRY; 603 } 604 605 /* check if we should use the vlan entry, returns false if it's only context */ 606 static inline bool br_vlan_should_use(const struct net_bridge_vlan *v) 607 { 608 if (br_vlan_is_master(v)) { 609 if (br_vlan_is_brentry(v)) 610 return true; 611 else 612 return false; 613 } 614 615 return true; 616 } 617 618 static inline bool nbp_state_should_learn(const struct net_bridge_port *p) 619 { 620 return p->state == BR_STATE_LEARNING || p->state == BR_STATE_FORWARDING; 621 } 622 623 static inline bool br_vlan_valid_id(u16 vid, struct netlink_ext_ack *extack) 624 { 625 bool ret = vid > 0 && vid < VLAN_VID_MASK; 626 627 if (!ret) 628 NL_SET_ERR_MSG_MOD(extack, "Vlan id is invalid"); 629 630 return ret; 631 } 632 633 static inline bool br_vlan_valid_range(const struct bridge_vlan_info *cur, 634 const struct bridge_vlan_info *last, 635 struct netlink_ext_ack *extack) 636 { 637 /* pvid flag is not allowed in ranges */ 638 if (cur->flags & BRIDGE_VLAN_INFO_PVID) { 639 NL_SET_ERR_MSG_MOD(extack, "Pvid isn't allowed in a range"); 640 return false; 641 } 642 643 /* when cur is the range end, check if: 644 * - it has range start flag 645 * - range ids are invalid (end is equal to or before start) 646 */ 647 if (last) { 648 if (cur->flags & BRIDGE_VLAN_INFO_RANGE_BEGIN) { 649 NL_SET_ERR_MSG_MOD(extack, "Found a new vlan range start while processing one"); 650 return false; 651 } else if (!(cur->flags & BRIDGE_VLAN_INFO_RANGE_END)) { 652 NL_SET_ERR_MSG_MOD(extack, "Vlan range end flag is missing"); 653 return false; 654 } else if (cur->vid <= last->vid) { 655 NL_SET_ERR_MSG_MOD(extack, "End vlan id is less than or equal to start vlan id"); 656 return false; 657 } 658 } 659 660 /* check for required range flags */ 661 if (!(cur->flags & (BRIDGE_VLAN_INFO_RANGE_BEGIN | 662 BRIDGE_VLAN_INFO_RANGE_END))) { 663 NL_SET_ERR_MSG_MOD(extack, "Both vlan range flags are missing"); 664 return false; 665 } 666 667 return true; 668 } 669 670 static inline int br_afspec_cmd_to_rtm(int cmd) 671 { 672 switch (cmd) { 673 case RTM_SETLINK: 674 return RTM_NEWVLAN; 675 case RTM_DELLINK: 676 return RTM_DELVLAN; 677 } 678 679 return 0; 680 } 681 682 static inline int br_opt_get(const struct net_bridge *br, 683 enum net_bridge_opts opt) 684 { 685 return test_bit(opt, &br->options); 686 } 687 688 int br_boolopt_toggle(struct net_bridge *br, enum br_boolopt_id opt, bool on, 689 struct netlink_ext_ack *extack); 690 int br_boolopt_get(const struct net_bridge *br, enum br_boolopt_id opt); 691 int br_boolopt_multi_toggle(struct net_bridge *br, 692 struct br_boolopt_multi *bm, 693 struct netlink_ext_ack *extack); 694 void br_boolopt_multi_get(const struct net_bridge *br, 695 struct br_boolopt_multi *bm); 696 void br_opt_toggle(struct net_bridge *br, enum net_bridge_opts opt, bool on); 697 698 /* br_device.c */ 699 void br_dev_setup(struct net_device *dev); 700 void br_dev_delete(struct net_device *dev, struct list_head *list); 701 netdev_tx_t br_dev_xmit(struct sk_buff *skb, struct net_device *dev); 702 #ifdef CONFIG_NET_POLL_CONTROLLER 703 static inline void br_netpoll_send_skb(const struct net_bridge_port *p, 704 struct sk_buff *skb) 705 { 706 netpoll_send_skb(p->np, skb); 707 } 708 709 int br_netpoll_enable(struct net_bridge_port *p); 710 void br_netpoll_disable(struct net_bridge_port *p); 711 #else 712 static inline void br_netpoll_send_skb(const struct net_bridge_port *p, 713 struct sk_buff *skb) 714 { 715 } 716 717 static inline int br_netpoll_enable(struct net_bridge_port *p) 718 { 719 return 0; 720 } 721 722 static inline void br_netpoll_disable(struct net_bridge_port *p) 723 { 724 } 725 #endif 726 727 /* br_fdb.c */ 728 int br_fdb_init(void); 729 void br_fdb_fini(void); 730 int br_fdb_hash_init(struct net_bridge *br); 731 void br_fdb_hash_fini(struct net_bridge *br); 732 void br_fdb_flush(struct net_bridge *br); 733 void br_fdb_find_delete_local(struct net_bridge *br, 734 const struct net_bridge_port *p, 735 const unsigned char *addr, u16 vid); 736 void br_fdb_changeaddr(struct net_bridge_port *p, const unsigned char *newaddr); 737 void br_fdb_change_mac_address(struct net_bridge *br, const u8 *newaddr); 738 void br_fdb_cleanup(struct work_struct *work); 739 void br_fdb_delete_by_port(struct net_bridge *br, 740 const struct net_bridge_port *p, u16 vid, int do_all); 741 struct net_bridge_fdb_entry *br_fdb_find_rcu(struct net_bridge *br, 742 const unsigned char *addr, 743 __u16 vid); 744 int br_fdb_test_addr(struct net_device *dev, unsigned char *addr); 745 int br_fdb_fillbuf(struct net_bridge *br, void *buf, unsigned long count, 746 unsigned long off); 747 int br_fdb_insert(struct net_bridge *br, struct net_bridge_port *source, 748 const unsigned char *addr, u16 vid); 749 void br_fdb_update(struct net_bridge *br, struct net_bridge_port *source, 750 const unsigned char *addr, u16 vid, unsigned long flags); 751 752 int br_fdb_delete(struct ndmsg *ndm, struct nlattr *tb[], 753 struct net_device *dev, const unsigned char *addr, u16 vid); 754 int br_fdb_add(struct ndmsg *nlh, struct nlattr *tb[], struct net_device *dev, 755 const unsigned char *addr, u16 vid, u16 nlh_flags, 756 struct netlink_ext_ack *extack); 757 int br_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb, 758 struct net_device *dev, struct net_device *fdev, int *idx); 759 int br_fdb_get(struct sk_buff *skb, struct nlattr *tb[], struct net_device *dev, 760 const unsigned char *addr, u16 vid, u32 portid, u32 seq, 761 struct netlink_ext_ack *extack); 762 int br_fdb_sync_static(struct net_bridge *br, struct net_bridge_port *p); 763 void br_fdb_unsync_static(struct net_bridge *br, struct net_bridge_port *p); 764 int br_fdb_external_learn_add(struct net_bridge *br, struct net_bridge_port *p, 765 const unsigned char *addr, u16 vid, 766 bool swdev_notify); 767 int br_fdb_external_learn_del(struct net_bridge *br, struct net_bridge_port *p, 768 const unsigned char *addr, u16 vid, 769 bool swdev_notify); 770 void br_fdb_offloaded_set(struct net_bridge *br, struct net_bridge_port *p, 771 const unsigned char *addr, u16 vid, bool offloaded); 772 int br_fdb_replay(const struct net_device *br_dev, const struct net_device *dev, 773 const void *ctx, bool adding, struct notifier_block *nb); 774 775 /* br_forward.c */ 776 enum br_pkt_type { 777 BR_PKT_UNICAST, 778 BR_PKT_MULTICAST, 779 BR_PKT_BROADCAST 780 }; 781 int br_dev_queue_push_xmit(struct net *net, struct sock *sk, struct sk_buff *skb); 782 void br_forward(const struct net_bridge_port *to, struct sk_buff *skb, 783 bool local_rcv, bool local_orig); 784 int br_forward_finish(struct net *net, struct sock *sk, struct sk_buff *skb); 785 void br_flood(struct net_bridge *br, struct sk_buff *skb, 786 enum br_pkt_type pkt_type, bool local_rcv, bool local_orig); 787 788 /* return true if both source port and dest port are isolated */ 789 static inline bool br_skb_isolated(const struct net_bridge_port *to, 790 const struct sk_buff *skb) 791 { 792 return BR_INPUT_SKB_CB(skb)->src_port_isolated && 793 (to->flags & BR_ISOLATED); 794 } 795 796 /* br_if.c */ 797 void br_port_carrier_check(struct net_bridge_port *p, bool *notified); 798 int br_add_bridge(struct net *net, const char *name); 799 int br_del_bridge(struct net *net, const char *name); 800 int br_add_if(struct net_bridge *br, struct net_device *dev, 801 struct netlink_ext_ack *extack); 802 int br_del_if(struct net_bridge *br, struct net_device *dev); 803 void br_mtu_auto_adjust(struct net_bridge *br); 804 netdev_features_t br_features_recompute(struct net_bridge *br, 805 netdev_features_t features); 806 void br_port_flags_change(struct net_bridge_port *port, unsigned long mask); 807 void br_manage_promisc(struct net_bridge *br); 808 int nbp_backup_change(struct net_bridge_port *p, struct net_device *backup_dev); 809 810 /* br_input.c */ 811 int br_handle_frame_finish(struct net *net, struct sock *sk, struct sk_buff *skb); 812 rx_handler_func_t *br_get_rx_handler(const struct net_device *dev); 813 814 struct br_frame_type { 815 __be16 type; 816 int (*frame_handler)(struct net_bridge_port *port, 817 struct sk_buff *skb); 818 struct hlist_node list; 819 }; 820 821 void br_add_frame(struct net_bridge *br, struct br_frame_type *ft); 822 void br_del_frame(struct net_bridge *br, struct br_frame_type *ft); 823 824 static inline bool br_rx_handler_check_rcu(const struct net_device *dev) 825 { 826 return rcu_dereference(dev->rx_handler) == br_get_rx_handler(dev); 827 } 828 829 static inline bool br_rx_handler_check_rtnl(const struct net_device *dev) 830 { 831 return rcu_dereference_rtnl(dev->rx_handler) == br_get_rx_handler(dev); 832 } 833 834 static inline struct net_bridge_port *br_port_get_check_rcu(const struct net_device *dev) 835 { 836 return br_rx_handler_check_rcu(dev) ? br_port_get_rcu(dev) : NULL; 837 } 838 839 static inline struct net_bridge_port * 840 br_port_get_check_rtnl(const struct net_device *dev) 841 { 842 return br_rx_handler_check_rtnl(dev) ? br_port_get_rtnl_rcu(dev) : NULL; 843 } 844 845 /* br_ioctl.c */ 846 int br_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); 847 int br_ioctl_deviceless_stub(struct net *net, unsigned int cmd, 848 void __user *arg); 849 850 /* br_multicast.c */ 851 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 852 int br_multicast_rcv(struct net_bridge_mcast **brmctx, 853 struct net_bridge_mcast_port **pmctx, 854 struct net_bridge_vlan *vlan, 855 struct sk_buff *skb, u16 vid); 856 struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge_mcast *brmctx, 857 struct sk_buff *skb, u16 vid); 858 int br_multicast_add_port(struct net_bridge_port *port); 859 void br_multicast_del_port(struct net_bridge_port *port); 860 void br_multicast_enable_port(struct net_bridge_port *port); 861 void br_multicast_disable_port(struct net_bridge_port *port); 862 void br_multicast_init(struct net_bridge *br); 863 void br_multicast_join_snoopers(struct net_bridge *br); 864 void br_multicast_leave_snoopers(struct net_bridge *br); 865 void br_multicast_open(struct net_bridge *br); 866 void br_multicast_stop(struct net_bridge *br); 867 void br_multicast_dev_del(struct net_bridge *br); 868 void br_multicast_flood(struct net_bridge_mdb_entry *mdst, struct sk_buff *skb, 869 struct net_bridge_mcast *brmctx, 870 bool local_rcv, bool local_orig); 871 int br_multicast_set_router(struct net_bridge *br, unsigned long val); 872 int br_multicast_set_port_router(struct net_bridge_port *p, unsigned long val); 873 int br_multicast_toggle(struct net_bridge *br, unsigned long val, 874 struct netlink_ext_ack *extack); 875 int br_multicast_set_querier(struct net_bridge *br, unsigned long val); 876 int br_multicast_set_hash_max(struct net_bridge *br, unsigned long val); 877 int br_multicast_set_igmp_version(struct net_bridge *br, unsigned long val); 878 #if IS_ENABLED(CONFIG_IPV6) 879 int br_multicast_set_mld_version(struct net_bridge *br, unsigned long val); 880 #endif 881 struct net_bridge_mdb_entry * 882 br_mdb_ip_get(struct net_bridge *br, struct br_ip *dst); 883 struct net_bridge_mdb_entry * 884 br_multicast_new_group(struct net_bridge *br, struct br_ip *group); 885 struct net_bridge_port_group * 886 br_multicast_new_port_group(struct net_bridge_port *port, struct br_ip *group, 887 struct net_bridge_port_group __rcu *next, 888 unsigned char flags, const unsigned char *src, 889 u8 filter_mode, u8 rt_protocol); 890 int br_mdb_hash_init(struct net_bridge *br); 891 void br_mdb_hash_fini(struct net_bridge *br); 892 void br_mdb_notify(struct net_device *dev, struct net_bridge_mdb_entry *mp, 893 struct net_bridge_port_group *pg, int type); 894 void br_rtr_notify(struct net_device *dev, struct net_bridge_mcast_port *pmctx, 895 int type); 896 void br_multicast_del_pg(struct net_bridge_mdb_entry *mp, 897 struct net_bridge_port_group *pg, 898 struct net_bridge_port_group __rcu **pp); 899 void br_multicast_count(struct net_bridge *br, 900 const struct net_bridge_port *p, 901 const struct sk_buff *skb, u8 type, u8 dir); 902 int br_multicast_init_stats(struct net_bridge *br); 903 void br_multicast_uninit_stats(struct net_bridge *br); 904 void br_multicast_get_stats(const struct net_bridge *br, 905 const struct net_bridge_port *p, 906 struct br_mcast_stats *dest); 907 void br_mdb_init(void); 908 void br_mdb_uninit(void); 909 void br_multicast_host_join(const struct net_bridge_mcast *brmctx, 910 struct net_bridge_mdb_entry *mp, bool notify); 911 void br_multicast_host_leave(struct net_bridge_mdb_entry *mp, bool notify); 912 void br_multicast_star_g_handle_mode(struct net_bridge_port_group *pg, 913 u8 filter_mode); 914 void br_multicast_sg_add_exclude_ports(struct net_bridge_mdb_entry *star_mp, 915 struct net_bridge_port_group *sg); 916 struct net_bridge_group_src * 917 br_multicast_find_group_src(struct net_bridge_port_group *pg, struct br_ip *ip); 918 void br_multicast_del_group_src(struct net_bridge_group_src *src, 919 bool fastleave); 920 void br_multicast_ctx_init(struct net_bridge *br, 921 struct net_bridge_vlan *vlan, 922 struct net_bridge_mcast *brmctx); 923 void br_multicast_ctx_deinit(struct net_bridge_mcast *brmctx); 924 void br_multicast_port_ctx_init(struct net_bridge_port *port, 925 struct net_bridge_vlan *vlan, 926 struct net_bridge_mcast_port *pmctx); 927 void br_multicast_port_ctx_deinit(struct net_bridge_mcast_port *pmctx); 928 void br_multicast_toggle_one_vlan(struct net_bridge_vlan *vlan, bool on); 929 void br_multicast_toggle_vlan(struct net_bridge_vlan *vlan, bool on); 930 int br_multicast_toggle_vlan_snooping(struct net_bridge *br, bool on, 931 struct netlink_ext_ack *extack); 932 bool br_multicast_toggle_global_vlan(struct net_bridge_vlan *vlan, bool on); 933 934 int br_mdb_replay(struct net_device *br_dev, struct net_device *dev, 935 const void *ctx, bool adding, struct notifier_block *nb, 936 struct netlink_ext_ack *extack); 937 938 static inline bool br_group_is_l2(const struct br_ip *group) 939 { 940 return group->proto == 0; 941 } 942 943 #define mlock_dereference(X, br) \ 944 rcu_dereference_protected(X, lockdep_is_held(&br->multicast_lock)) 945 946 static inline struct hlist_node * 947 br_multicast_get_first_rport_node(struct net_bridge_mcast *brmctx, 948 struct sk_buff *skb) 949 { 950 #if IS_ENABLED(CONFIG_IPV6) 951 if (skb->protocol == htons(ETH_P_IPV6)) 952 return rcu_dereference(hlist_first_rcu(&brmctx->ip6_mc_router_list)); 953 #endif 954 return rcu_dereference(hlist_first_rcu(&brmctx->ip4_mc_router_list)); 955 } 956 957 static inline struct net_bridge_port * 958 br_multicast_rport_from_node_skb(struct hlist_node *rp, struct sk_buff *skb) 959 { 960 struct net_bridge_mcast_port *mctx; 961 962 #if IS_ENABLED(CONFIG_IPV6) 963 if (skb->protocol == htons(ETH_P_IPV6)) 964 mctx = hlist_entry_safe(rp, struct net_bridge_mcast_port, 965 ip6_rlist); 966 else 967 #endif 968 mctx = hlist_entry_safe(rp, struct net_bridge_mcast_port, 969 ip4_rlist); 970 971 if (mctx) 972 return mctx->port; 973 else 974 return NULL; 975 } 976 977 static inline bool br_ip4_multicast_is_router(struct net_bridge_mcast *brmctx) 978 { 979 return timer_pending(&brmctx->ip4_mc_router_timer); 980 } 981 982 static inline bool br_ip6_multicast_is_router(struct net_bridge_mcast *brmctx) 983 { 984 #if IS_ENABLED(CONFIG_IPV6) 985 return timer_pending(&brmctx->ip6_mc_router_timer); 986 #else 987 return false; 988 #endif 989 } 990 991 static inline bool 992 br_multicast_is_router(struct net_bridge_mcast *brmctx, struct sk_buff *skb) 993 { 994 switch (brmctx->multicast_router) { 995 case MDB_RTR_TYPE_PERM: 996 return true; 997 case MDB_RTR_TYPE_TEMP_QUERY: 998 if (skb) { 999 if (skb->protocol == htons(ETH_P_IP)) 1000 return br_ip4_multicast_is_router(brmctx); 1001 else if (skb->protocol == htons(ETH_P_IPV6)) 1002 return br_ip6_multicast_is_router(brmctx); 1003 } else { 1004 return br_ip4_multicast_is_router(brmctx) || 1005 br_ip6_multicast_is_router(brmctx); 1006 } 1007 fallthrough; 1008 default: 1009 return false; 1010 } 1011 } 1012 1013 static inline bool 1014 __br_multicast_querier_exists(struct net_bridge_mcast *brmctx, 1015 struct bridge_mcast_other_query *querier, 1016 const bool is_ipv6) 1017 { 1018 bool own_querier_enabled; 1019 1020 if (br_opt_get(brmctx->br, BROPT_MULTICAST_QUERIER)) { 1021 if (is_ipv6 && !br_opt_get(brmctx->br, BROPT_HAS_IPV6_ADDR)) 1022 own_querier_enabled = false; 1023 else 1024 own_querier_enabled = true; 1025 } else { 1026 own_querier_enabled = false; 1027 } 1028 1029 return time_is_before_jiffies(querier->delay_time) && 1030 (own_querier_enabled || timer_pending(&querier->timer)); 1031 } 1032 1033 static inline bool br_multicast_querier_exists(struct net_bridge_mcast *brmctx, 1034 struct ethhdr *eth, 1035 const struct net_bridge_mdb_entry *mdb) 1036 { 1037 switch (eth->h_proto) { 1038 case (htons(ETH_P_IP)): 1039 return __br_multicast_querier_exists(brmctx, 1040 &brmctx->ip4_other_query, false); 1041 #if IS_ENABLED(CONFIG_IPV6) 1042 case (htons(ETH_P_IPV6)): 1043 return __br_multicast_querier_exists(brmctx, 1044 &brmctx->ip6_other_query, true); 1045 #endif 1046 default: 1047 return !!mdb && br_group_is_l2(&mdb->addr); 1048 } 1049 } 1050 1051 static inline bool br_multicast_is_star_g(const struct br_ip *ip) 1052 { 1053 switch (ip->proto) { 1054 case htons(ETH_P_IP): 1055 return ipv4_is_zeronet(ip->src.ip4); 1056 #if IS_ENABLED(CONFIG_IPV6) 1057 case htons(ETH_P_IPV6): 1058 return ipv6_addr_any(&ip->src.ip6); 1059 #endif 1060 default: 1061 return false; 1062 } 1063 } 1064 1065 static inline bool 1066 br_multicast_should_handle_mode(const struct net_bridge_mcast *brmctx, 1067 __be16 proto) 1068 { 1069 switch (proto) { 1070 case htons(ETH_P_IP): 1071 return !!(brmctx->multicast_igmp_version == 3); 1072 #if IS_ENABLED(CONFIG_IPV6) 1073 case htons(ETH_P_IPV6): 1074 return !!(brmctx->multicast_mld_version == 2); 1075 #endif 1076 default: 1077 return false; 1078 } 1079 } 1080 1081 static inline int br_multicast_igmp_type(const struct sk_buff *skb) 1082 { 1083 return BR_INPUT_SKB_CB(skb)->igmp; 1084 } 1085 1086 static inline unsigned long br_multicast_lmqt(const struct net_bridge_mcast *brmctx) 1087 { 1088 return brmctx->multicast_last_member_interval * 1089 brmctx->multicast_last_member_count; 1090 } 1091 1092 static inline unsigned long br_multicast_gmi(const struct net_bridge_mcast *brmctx) 1093 { 1094 /* use the RFC default of 2 for QRV */ 1095 return 2 * brmctx->multicast_query_interval + 1096 brmctx->multicast_query_response_interval; 1097 } 1098 1099 static inline bool 1100 br_multicast_ctx_is_vlan(const struct net_bridge_mcast *brmctx) 1101 { 1102 return !!brmctx->vlan; 1103 } 1104 1105 static inline bool 1106 br_multicast_port_ctx_is_vlan(const struct net_bridge_mcast_port *pmctx) 1107 { 1108 return !!pmctx->vlan; 1109 } 1110 1111 static inline struct net_bridge_mcast * 1112 br_multicast_port_ctx_get_global(const struct net_bridge_mcast_port *pmctx) 1113 { 1114 if (!br_multicast_port_ctx_is_vlan(pmctx)) 1115 return &pmctx->port->br->multicast_ctx; 1116 else 1117 return &pmctx->vlan->brvlan->br_mcast_ctx; 1118 } 1119 1120 static inline bool 1121 br_multicast_ctx_vlan_global_disabled(const struct net_bridge_mcast *brmctx) 1122 { 1123 return br_opt_get(brmctx->br, BROPT_MCAST_VLAN_SNOOPING_ENABLED) && 1124 br_multicast_ctx_is_vlan(brmctx) && 1125 !(brmctx->vlan->priv_flags & BR_VLFLAG_GLOBAL_MCAST_ENABLED); 1126 } 1127 1128 static inline bool 1129 br_multicast_ctx_vlan_disabled(const struct net_bridge_mcast *brmctx) 1130 { 1131 return br_multicast_ctx_is_vlan(brmctx) && 1132 !(brmctx->vlan->priv_flags & BR_VLFLAG_MCAST_ENABLED); 1133 } 1134 1135 static inline bool 1136 br_multicast_port_ctx_vlan_disabled(const struct net_bridge_mcast_port *pmctx) 1137 { 1138 return br_multicast_port_ctx_is_vlan(pmctx) && 1139 !(pmctx->vlan->priv_flags & BR_VLFLAG_MCAST_ENABLED); 1140 } 1141 1142 static inline bool 1143 br_multicast_port_ctx_state_disabled(const struct net_bridge_mcast_port *pmctx) 1144 { 1145 return pmctx->port->state == BR_STATE_DISABLED || 1146 (br_multicast_port_ctx_is_vlan(pmctx) && 1147 (br_multicast_port_ctx_vlan_disabled(pmctx) || 1148 pmctx->vlan->state == BR_STATE_DISABLED)); 1149 } 1150 1151 static inline bool 1152 br_multicast_port_ctx_state_stopped(const struct net_bridge_mcast_port *pmctx) 1153 { 1154 return br_multicast_port_ctx_state_disabled(pmctx) || 1155 pmctx->port->state == BR_STATE_BLOCKING || 1156 (br_multicast_port_ctx_is_vlan(pmctx) && 1157 pmctx->vlan->state == BR_STATE_BLOCKING); 1158 } 1159 #else 1160 static inline int br_multicast_rcv(struct net_bridge_mcast **brmctx, 1161 struct net_bridge_mcast_port **pmctx, 1162 struct net_bridge_vlan *vlan, 1163 struct sk_buff *skb, 1164 u16 vid) 1165 { 1166 return 0; 1167 } 1168 1169 static inline struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge_mcast *brmctx, 1170 struct sk_buff *skb, u16 vid) 1171 { 1172 return NULL; 1173 } 1174 1175 static inline int br_multicast_add_port(struct net_bridge_port *port) 1176 { 1177 return 0; 1178 } 1179 1180 static inline void br_multicast_del_port(struct net_bridge_port *port) 1181 { 1182 } 1183 1184 static inline void br_multicast_enable_port(struct net_bridge_port *port) 1185 { 1186 } 1187 1188 static inline void br_multicast_disable_port(struct net_bridge_port *port) 1189 { 1190 } 1191 1192 static inline void br_multicast_init(struct net_bridge *br) 1193 { 1194 } 1195 1196 static inline void br_multicast_join_snoopers(struct net_bridge *br) 1197 { 1198 } 1199 1200 static inline void br_multicast_leave_snoopers(struct net_bridge *br) 1201 { 1202 } 1203 1204 static inline void br_multicast_open(struct net_bridge *br) 1205 { 1206 } 1207 1208 static inline void br_multicast_stop(struct net_bridge *br) 1209 { 1210 } 1211 1212 static inline void br_multicast_dev_del(struct net_bridge *br) 1213 { 1214 } 1215 1216 static inline void br_multicast_flood(struct net_bridge_mdb_entry *mdst, 1217 struct sk_buff *skb, 1218 struct net_bridge_mcast *brmctx, 1219 bool local_rcv, bool local_orig) 1220 { 1221 } 1222 1223 static inline bool br_multicast_is_router(struct net_bridge_mcast *brmctx, 1224 struct sk_buff *skb) 1225 { 1226 return false; 1227 } 1228 1229 static inline bool br_multicast_querier_exists(struct net_bridge_mcast *brmctx, 1230 struct ethhdr *eth, 1231 const struct net_bridge_mdb_entry *mdb) 1232 { 1233 return false; 1234 } 1235 1236 static inline void br_mdb_init(void) 1237 { 1238 } 1239 1240 static inline void br_mdb_uninit(void) 1241 { 1242 } 1243 1244 static inline int br_mdb_hash_init(struct net_bridge *br) 1245 { 1246 return 0; 1247 } 1248 1249 static inline void br_mdb_hash_fini(struct net_bridge *br) 1250 { 1251 } 1252 1253 static inline void br_multicast_count(struct net_bridge *br, 1254 const struct net_bridge_port *p, 1255 const struct sk_buff *skb, 1256 u8 type, u8 dir) 1257 { 1258 } 1259 1260 static inline int br_multicast_init_stats(struct net_bridge *br) 1261 { 1262 return 0; 1263 } 1264 1265 static inline void br_multicast_uninit_stats(struct net_bridge *br) 1266 { 1267 } 1268 1269 static inline int br_multicast_igmp_type(const struct sk_buff *skb) 1270 { 1271 return 0; 1272 } 1273 1274 static inline void br_multicast_ctx_init(struct net_bridge *br, 1275 struct net_bridge_vlan *vlan, 1276 struct net_bridge_mcast *brmctx) 1277 { 1278 } 1279 1280 static inline void br_multicast_ctx_deinit(struct net_bridge_mcast *brmctx) 1281 { 1282 } 1283 1284 static inline void br_multicast_port_ctx_init(struct net_bridge_port *port, 1285 struct net_bridge_vlan *vlan, 1286 struct net_bridge_mcast_port *pmctx) 1287 { 1288 } 1289 1290 static inline void br_multicast_port_ctx_deinit(struct net_bridge_mcast_port *pmctx) 1291 { 1292 } 1293 1294 static inline void br_multicast_toggle_one_vlan(struct net_bridge_vlan *vlan, 1295 bool on) 1296 { 1297 } 1298 1299 static inline void br_multicast_toggle_vlan(struct net_bridge_vlan *vlan, 1300 bool on) 1301 { 1302 } 1303 1304 static inline int br_multicast_toggle_vlan_snooping(struct net_bridge *br, 1305 bool on, 1306 struct netlink_ext_ack *extack) 1307 { 1308 return -EOPNOTSUPP; 1309 } 1310 1311 static inline bool br_multicast_toggle_global_vlan(struct net_bridge_vlan *vlan, 1312 bool on) 1313 { 1314 return false; 1315 } 1316 1317 static inline int br_mdb_replay(struct net_device *br_dev, 1318 struct net_device *dev, const void *ctx, 1319 bool adding, struct notifier_block *nb, 1320 struct netlink_ext_ack *extack) 1321 { 1322 return -EOPNOTSUPP; 1323 } 1324 #endif 1325 1326 /* br_vlan.c */ 1327 #ifdef CONFIG_BRIDGE_VLAN_FILTERING 1328 bool br_allowed_ingress(const struct net_bridge *br, 1329 struct net_bridge_vlan_group *vg, struct sk_buff *skb, 1330 u16 *vid, u8 *state, 1331 struct net_bridge_vlan **vlan); 1332 bool br_allowed_egress(struct net_bridge_vlan_group *vg, 1333 const struct sk_buff *skb); 1334 bool br_should_learn(struct net_bridge_port *p, struct sk_buff *skb, u16 *vid); 1335 struct sk_buff *br_handle_vlan(struct net_bridge *br, 1336 const struct net_bridge_port *port, 1337 struct net_bridge_vlan_group *vg, 1338 struct sk_buff *skb); 1339 int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags, 1340 bool *changed, struct netlink_ext_ack *extack); 1341 int br_vlan_delete(struct net_bridge *br, u16 vid); 1342 void br_vlan_flush(struct net_bridge *br); 1343 struct net_bridge_vlan *br_vlan_find(struct net_bridge_vlan_group *vg, u16 vid); 1344 void br_recalculate_fwd_mask(struct net_bridge *br); 1345 int br_vlan_filter_toggle(struct net_bridge *br, unsigned long val, 1346 struct netlink_ext_ack *extack); 1347 int __br_vlan_set_proto(struct net_bridge *br, __be16 proto, 1348 struct netlink_ext_ack *extack); 1349 int br_vlan_set_proto(struct net_bridge *br, unsigned long val, 1350 struct netlink_ext_ack *extack); 1351 int br_vlan_set_stats(struct net_bridge *br, unsigned long val); 1352 int br_vlan_set_stats_per_port(struct net_bridge *br, unsigned long val); 1353 int br_vlan_init(struct net_bridge *br); 1354 int br_vlan_set_default_pvid(struct net_bridge *br, unsigned long val, 1355 struct netlink_ext_ack *extack); 1356 int __br_vlan_set_default_pvid(struct net_bridge *br, u16 pvid, 1357 struct netlink_ext_ack *extack); 1358 int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags, 1359 bool *changed, struct netlink_ext_ack *extack); 1360 int nbp_vlan_delete(struct net_bridge_port *port, u16 vid); 1361 void nbp_vlan_flush(struct net_bridge_port *port); 1362 int nbp_vlan_init(struct net_bridge_port *port, struct netlink_ext_ack *extack); 1363 int nbp_get_num_vlan_infos(struct net_bridge_port *p, u32 filter_mask); 1364 void br_vlan_get_stats(const struct net_bridge_vlan *v, 1365 struct pcpu_sw_netstats *stats); 1366 void br_vlan_port_event(struct net_bridge_port *p, unsigned long event); 1367 int br_vlan_bridge_event(struct net_device *dev, unsigned long event, 1368 void *ptr); 1369 void br_vlan_rtnl_init(void); 1370 void br_vlan_rtnl_uninit(void); 1371 void br_vlan_notify(const struct net_bridge *br, 1372 const struct net_bridge_port *p, 1373 u16 vid, u16 vid_range, 1374 int cmd); 1375 int br_vlan_replay(struct net_device *br_dev, struct net_device *dev, 1376 const void *ctx, bool adding, struct notifier_block *nb, 1377 struct netlink_ext_ack *extack); 1378 bool br_vlan_can_enter_range(const struct net_bridge_vlan *v_curr, 1379 const struct net_bridge_vlan *range_end); 1380 1381 void br_vlan_fill_forward_path_pvid(struct net_bridge *br, 1382 struct net_device_path_ctx *ctx, 1383 struct net_device_path *path); 1384 int br_vlan_fill_forward_path_mode(struct net_bridge *br, 1385 struct net_bridge_port *dst, 1386 struct net_device_path *path); 1387 1388 static inline struct net_bridge_vlan_group *br_vlan_group( 1389 const struct net_bridge *br) 1390 { 1391 return rtnl_dereference(br->vlgrp); 1392 } 1393 1394 static inline struct net_bridge_vlan_group *nbp_vlan_group( 1395 const struct net_bridge_port *p) 1396 { 1397 return rtnl_dereference(p->vlgrp); 1398 } 1399 1400 static inline struct net_bridge_vlan_group *br_vlan_group_rcu( 1401 const struct net_bridge *br) 1402 { 1403 return rcu_dereference(br->vlgrp); 1404 } 1405 1406 static inline struct net_bridge_vlan_group *nbp_vlan_group_rcu( 1407 const struct net_bridge_port *p) 1408 { 1409 return rcu_dereference(p->vlgrp); 1410 } 1411 1412 /* Since bridge now depends on 8021Q module, but the time bridge sees the 1413 * skb, the vlan tag will always be present if the frame was tagged. 1414 */ 1415 static inline int br_vlan_get_tag(const struct sk_buff *skb, u16 *vid) 1416 { 1417 int err = 0; 1418 1419 if (skb_vlan_tag_present(skb)) { 1420 *vid = skb_vlan_tag_get_id(skb); 1421 } else { 1422 *vid = 0; 1423 err = -EINVAL; 1424 } 1425 1426 return err; 1427 } 1428 1429 static inline u16 br_get_pvid(const struct net_bridge_vlan_group *vg) 1430 { 1431 if (!vg) 1432 return 0; 1433 1434 smp_rmb(); 1435 return vg->pvid; 1436 } 1437 1438 static inline u16 br_vlan_flags(const struct net_bridge_vlan *v, u16 pvid) 1439 { 1440 return v->vid == pvid ? v->flags | BRIDGE_VLAN_INFO_PVID : v->flags; 1441 } 1442 #else 1443 static inline bool br_allowed_ingress(const struct net_bridge *br, 1444 struct net_bridge_vlan_group *vg, 1445 struct sk_buff *skb, 1446 u16 *vid, u8 *state, 1447 struct net_bridge_vlan **vlan) 1448 1449 { 1450 *vlan = NULL; 1451 return true; 1452 } 1453 1454 static inline bool br_allowed_egress(struct net_bridge_vlan_group *vg, 1455 const struct sk_buff *skb) 1456 { 1457 return true; 1458 } 1459 1460 static inline bool br_should_learn(struct net_bridge_port *p, 1461 struct sk_buff *skb, u16 *vid) 1462 { 1463 return true; 1464 } 1465 1466 static inline struct sk_buff *br_handle_vlan(struct net_bridge *br, 1467 const struct net_bridge_port *port, 1468 struct net_bridge_vlan_group *vg, 1469 struct sk_buff *skb) 1470 { 1471 return skb; 1472 } 1473 1474 static inline int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags, 1475 bool *changed, struct netlink_ext_ack *extack) 1476 { 1477 *changed = false; 1478 return -EOPNOTSUPP; 1479 } 1480 1481 static inline int br_vlan_delete(struct net_bridge *br, u16 vid) 1482 { 1483 return -EOPNOTSUPP; 1484 } 1485 1486 static inline void br_vlan_flush(struct net_bridge *br) 1487 { 1488 } 1489 1490 static inline void br_recalculate_fwd_mask(struct net_bridge *br) 1491 { 1492 } 1493 1494 static inline int br_vlan_init(struct net_bridge *br) 1495 { 1496 return 0; 1497 } 1498 1499 static inline int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags, 1500 bool *changed, struct netlink_ext_ack *extack) 1501 { 1502 *changed = false; 1503 return -EOPNOTSUPP; 1504 } 1505 1506 static inline int nbp_vlan_delete(struct net_bridge_port *port, u16 vid) 1507 { 1508 return -EOPNOTSUPP; 1509 } 1510 1511 static inline void nbp_vlan_flush(struct net_bridge_port *port) 1512 { 1513 } 1514 1515 static inline struct net_bridge_vlan *br_vlan_find(struct net_bridge_vlan_group *vg, 1516 u16 vid) 1517 { 1518 return NULL; 1519 } 1520 1521 static inline int nbp_vlan_init(struct net_bridge_port *port, 1522 struct netlink_ext_ack *extack) 1523 { 1524 return 0; 1525 } 1526 1527 static inline u16 br_vlan_get_tag(const struct sk_buff *skb, u16 *tag) 1528 { 1529 return 0; 1530 } 1531 1532 static inline u16 br_get_pvid(const struct net_bridge_vlan_group *vg) 1533 { 1534 return 0; 1535 } 1536 1537 static inline int br_vlan_filter_toggle(struct net_bridge *br, 1538 unsigned long val, 1539 struct netlink_ext_ack *extack) 1540 { 1541 return -EOPNOTSUPP; 1542 } 1543 1544 static inline int nbp_get_num_vlan_infos(struct net_bridge_port *p, 1545 u32 filter_mask) 1546 { 1547 return 0; 1548 } 1549 1550 static inline void br_vlan_fill_forward_path_pvid(struct net_bridge *br, 1551 struct net_device_path_ctx *ctx, 1552 struct net_device_path *path) 1553 { 1554 } 1555 1556 static inline int br_vlan_fill_forward_path_mode(struct net_bridge *br, 1557 struct net_bridge_port *dst, 1558 struct net_device_path *path) 1559 { 1560 return 0; 1561 } 1562 1563 static inline struct net_bridge_vlan_group *br_vlan_group( 1564 const struct net_bridge *br) 1565 { 1566 return NULL; 1567 } 1568 1569 static inline struct net_bridge_vlan_group *nbp_vlan_group( 1570 const struct net_bridge_port *p) 1571 { 1572 return NULL; 1573 } 1574 1575 static inline struct net_bridge_vlan_group *br_vlan_group_rcu( 1576 const struct net_bridge *br) 1577 { 1578 return NULL; 1579 } 1580 1581 static inline struct net_bridge_vlan_group *nbp_vlan_group_rcu( 1582 const struct net_bridge_port *p) 1583 { 1584 return NULL; 1585 } 1586 1587 static inline void br_vlan_get_stats(const struct net_bridge_vlan *v, 1588 struct pcpu_sw_netstats *stats) 1589 { 1590 } 1591 1592 static inline void br_vlan_port_event(struct net_bridge_port *p, 1593 unsigned long event) 1594 { 1595 } 1596 1597 static inline int br_vlan_bridge_event(struct net_device *dev, 1598 unsigned long event, void *ptr) 1599 { 1600 return 0; 1601 } 1602 1603 static inline void br_vlan_rtnl_init(void) 1604 { 1605 } 1606 1607 static inline void br_vlan_rtnl_uninit(void) 1608 { 1609 } 1610 1611 static inline void br_vlan_notify(const struct net_bridge *br, 1612 const struct net_bridge_port *p, 1613 u16 vid, u16 vid_range, 1614 int cmd) 1615 { 1616 } 1617 1618 static inline bool br_vlan_can_enter_range(const struct net_bridge_vlan *v_curr, 1619 const struct net_bridge_vlan *range_end) 1620 { 1621 return true; 1622 } 1623 1624 static inline int br_vlan_replay(struct net_device *br_dev, 1625 struct net_device *dev, const void *ctx, 1626 bool adding, struct notifier_block *nb, 1627 struct netlink_ext_ack *extack) 1628 { 1629 return -EOPNOTSUPP; 1630 } 1631 #endif 1632 1633 /* br_vlan_options.c */ 1634 #ifdef CONFIG_BRIDGE_VLAN_FILTERING 1635 bool br_vlan_opts_eq_range(const struct net_bridge_vlan *v_curr, 1636 const struct net_bridge_vlan *range_end); 1637 bool br_vlan_opts_fill(struct sk_buff *skb, const struct net_bridge_vlan *v); 1638 size_t br_vlan_opts_nl_size(void); 1639 int br_vlan_process_options(const struct net_bridge *br, 1640 const struct net_bridge_port *p, 1641 struct net_bridge_vlan *range_start, 1642 struct net_bridge_vlan *range_end, 1643 struct nlattr **tb, 1644 struct netlink_ext_ack *extack); 1645 int br_vlan_rtm_process_global_options(struct net_device *dev, 1646 const struct nlattr *attr, 1647 int cmd, 1648 struct netlink_ext_ack *extack); 1649 bool br_vlan_global_opts_can_enter_range(const struct net_bridge_vlan *v_curr, 1650 const struct net_bridge_vlan *r_end); 1651 bool br_vlan_global_opts_fill(struct sk_buff *skb, u16 vid, u16 vid_range, 1652 const struct net_bridge_vlan *v_opts); 1653 1654 /* vlan state manipulation helpers using *_ONCE to annotate lock-free access */ 1655 static inline u8 br_vlan_get_state(const struct net_bridge_vlan *v) 1656 { 1657 return READ_ONCE(v->state); 1658 } 1659 1660 static inline void br_vlan_set_state(struct net_bridge_vlan *v, u8 state) 1661 { 1662 WRITE_ONCE(v->state, state); 1663 } 1664 1665 static inline u8 br_vlan_get_pvid_state(const struct net_bridge_vlan_group *vg) 1666 { 1667 return READ_ONCE(vg->pvid_state); 1668 } 1669 1670 static inline void br_vlan_set_pvid_state(struct net_bridge_vlan_group *vg, 1671 u8 state) 1672 { 1673 WRITE_ONCE(vg->pvid_state, state); 1674 } 1675 1676 /* learn_allow is true at ingress and false at egress */ 1677 static inline bool br_vlan_state_allowed(u8 state, bool learn_allow) 1678 { 1679 switch (state) { 1680 case BR_STATE_LEARNING: 1681 return learn_allow; 1682 case BR_STATE_FORWARDING: 1683 return true; 1684 default: 1685 return false; 1686 } 1687 } 1688 #endif 1689 1690 struct nf_br_ops { 1691 int (*br_dev_xmit_hook)(struct sk_buff *skb); 1692 }; 1693 extern const struct nf_br_ops __rcu *nf_br_ops; 1694 1695 /* br_netfilter.c */ 1696 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER) 1697 int br_nf_core_init(void); 1698 void br_nf_core_fini(void); 1699 void br_netfilter_rtable_init(struct net_bridge *); 1700 #else 1701 static inline int br_nf_core_init(void) { return 0; } 1702 static inline void br_nf_core_fini(void) {} 1703 #define br_netfilter_rtable_init(x) 1704 #endif 1705 1706 /* br_stp.c */ 1707 void br_set_state(struct net_bridge_port *p, unsigned int state); 1708 struct net_bridge_port *br_get_port(struct net_bridge *br, u16 port_no); 1709 void br_init_port(struct net_bridge_port *p); 1710 void br_become_designated_port(struct net_bridge_port *p); 1711 1712 void __br_set_forward_delay(struct net_bridge *br, unsigned long t); 1713 int br_set_forward_delay(struct net_bridge *br, unsigned long x); 1714 int br_set_hello_time(struct net_bridge *br, unsigned long x); 1715 int br_set_max_age(struct net_bridge *br, unsigned long x); 1716 int __set_ageing_time(struct net_device *dev, unsigned long t); 1717 int br_set_ageing_time(struct net_bridge *br, clock_t ageing_time); 1718 1719 1720 /* br_stp_if.c */ 1721 void br_stp_enable_bridge(struct net_bridge *br); 1722 void br_stp_disable_bridge(struct net_bridge *br); 1723 int br_stp_set_enabled(struct net_bridge *br, unsigned long val, 1724 struct netlink_ext_ack *extack); 1725 void br_stp_enable_port(struct net_bridge_port *p); 1726 void br_stp_disable_port(struct net_bridge_port *p); 1727 bool br_stp_recalculate_bridge_id(struct net_bridge *br); 1728 void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *a); 1729 void br_stp_set_bridge_priority(struct net_bridge *br, u16 newprio); 1730 int br_stp_set_port_priority(struct net_bridge_port *p, unsigned long newprio); 1731 int br_stp_set_path_cost(struct net_bridge_port *p, unsigned long path_cost); 1732 ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id); 1733 1734 /* br_stp_bpdu.c */ 1735 struct stp_proto; 1736 void br_stp_rcv(const struct stp_proto *proto, struct sk_buff *skb, 1737 struct net_device *dev); 1738 1739 /* br_stp_timer.c */ 1740 void br_stp_timer_init(struct net_bridge *br); 1741 void br_stp_port_timer_init(struct net_bridge_port *p); 1742 unsigned long br_timer_value(const struct timer_list *timer); 1743 1744 /* br.c */ 1745 #if IS_ENABLED(CONFIG_ATM_LANE) 1746 extern int (*br_fdb_test_addr_hook)(struct net_device *dev, unsigned char *addr); 1747 #endif 1748 1749 /* br_mrp.c */ 1750 #if IS_ENABLED(CONFIG_BRIDGE_MRP) 1751 int br_mrp_parse(struct net_bridge *br, struct net_bridge_port *p, 1752 struct nlattr *attr, int cmd, struct netlink_ext_ack *extack); 1753 bool br_mrp_enabled(struct net_bridge *br); 1754 void br_mrp_port_del(struct net_bridge *br, struct net_bridge_port *p); 1755 int br_mrp_fill_info(struct sk_buff *skb, struct net_bridge *br); 1756 #else 1757 static inline int br_mrp_parse(struct net_bridge *br, struct net_bridge_port *p, 1758 struct nlattr *attr, int cmd, 1759 struct netlink_ext_ack *extack) 1760 { 1761 return -EOPNOTSUPP; 1762 } 1763 1764 static inline bool br_mrp_enabled(struct net_bridge *br) 1765 { 1766 return false; 1767 } 1768 1769 static inline void br_mrp_port_del(struct net_bridge *br, 1770 struct net_bridge_port *p) 1771 { 1772 } 1773 1774 static inline int br_mrp_fill_info(struct sk_buff *skb, struct net_bridge *br) 1775 { 1776 return 0; 1777 } 1778 1779 #endif 1780 1781 /* br_cfm.c */ 1782 #if IS_ENABLED(CONFIG_BRIDGE_CFM) 1783 int br_cfm_parse(struct net_bridge *br, struct net_bridge_port *p, 1784 struct nlattr *attr, int cmd, struct netlink_ext_ack *extack); 1785 bool br_cfm_created(struct net_bridge *br); 1786 void br_cfm_port_del(struct net_bridge *br, struct net_bridge_port *p); 1787 int br_cfm_config_fill_info(struct sk_buff *skb, struct net_bridge *br); 1788 int br_cfm_status_fill_info(struct sk_buff *skb, 1789 struct net_bridge *br, 1790 bool getlink); 1791 int br_cfm_mep_count(struct net_bridge *br, u32 *count); 1792 int br_cfm_peer_mep_count(struct net_bridge *br, u32 *count); 1793 #else 1794 static inline int br_cfm_parse(struct net_bridge *br, struct net_bridge_port *p, 1795 struct nlattr *attr, int cmd, 1796 struct netlink_ext_ack *extack) 1797 { 1798 return -EOPNOTSUPP; 1799 } 1800 1801 static inline bool br_cfm_created(struct net_bridge *br) 1802 { 1803 return false; 1804 } 1805 1806 static inline void br_cfm_port_del(struct net_bridge *br, 1807 struct net_bridge_port *p) 1808 { 1809 } 1810 1811 static inline int br_cfm_config_fill_info(struct sk_buff *skb, struct net_bridge *br) 1812 { 1813 return -EOPNOTSUPP; 1814 } 1815 1816 static inline int br_cfm_status_fill_info(struct sk_buff *skb, 1817 struct net_bridge *br, 1818 bool getlink) 1819 { 1820 return -EOPNOTSUPP; 1821 } 1822 1823 static inline int br_cfm_mep_count(struct net_bridge *br, u32 *count) 1824 { 1825 return -EOPNOTSUPP; 1826 } 1827 1828 static inline int br_cfm_peer_mep_count(struct net_bridge *br, u32 *count) 1829 { 1830 return -EOPNOTSUPP; 1831 } 1832 #endif 1833 1834 /* br_netlink.c */ 1835 extern struct rtnl_link_ops br_link_ops; 1836 int br_netlink_init(void); 1837 void br_netlink_fini(void); 1838 void br_ifinfo_notify(int event, const struct net_bridge *br, 1839 const struct net_bridge_port *port); 1840 void br_info_notify(int event, const struct net_bridge *br, 1841 const struct net_bridge_port *port, u32 filter); 1842 int br_setlink(struct net_device *dev, struct nlmsghdr *nlmsg, u16 flags, 1843 struct netlink_ext_ack *extack); 1844 int br_dellink(struct net_device *dev, struct nlmsghdr *nlmsg, u16 flags); 1845 int br_getlink(struct sk_buff *skb, u32 pid, u32 seq, struct net_device *dev, 1846 u32 filter_mask, int nlflags); 1847 int br_process_vlan_info(struct net_bridge *br, 1848 struct net_bridge_port *p, int cmd, 1849 struct bridge_vlan_info *vinfo_curr, 1850 struct bridge_vlan_info **vinfo_last, 1851 bool *changed, 1852 struct netlink_ext_ack *extack); 1853 1854 #ifdef CONFIG_SYSFS 1855 /* br_sysfs_if.c */ 1856 extern const struct sysfs_ops brport_sysfs_ops; 1857 int br_sysfs_addif(struct net_bridge_port *p); 1858 int br_sysfs_renameif(struct net_bridge_port *p); 1859 1860 /* br_sysfs_br.c */ 1861 int br_sysfs_addbr(struct net_device *dev); 1862 void br_sysfs_delbr(struct net_device *dev); 1863 1864 #else 1865 1866 static inline int br_sysfs_addif(struct net_bridge_port *p) { return 0; } 1867 static inline int br_sysfs_renameif(struct net_bridge_port *p) { return 0; } 1868 static inline int br_sysfs_addbr(struct net_device *dev) { return 0; } 1869 static inline void br_sysfs_delbr(struct net_device *dev) { return; } 1870 #endif /* CONFIG_SYSFS */ 1871 1872 /* br_switchdev.c */ 1873 #ifdef CONFIG_NET_SWITCHDEV 1874 void nbp_switchdev_frame_mark(const struct net_bridge_port *p, 1875 struct sk_buff *skb); 1876 bool nbp_switchdev_allowed_egress(const struct net_bridge_port *p, 1877 const struct sk_buff *skb); 1878 int br_switchdev_set_port_flag(struct net_bridge_port *p, 1879 unsigned long flags, 1880 unsigned long mask, 1881 struct netlink_ext_ack *extack); 1882 void br_switchdev_fdb_notify(struct net_bridge *br, 1883 const struct net_bridge_fdb_entry *fdb, int type); 1884 int br_switchdev_port_vlan_add(struct net_device *dev, u16 vid, u16 flags, 1885 struct netlink_ext_ack *extack); 1886 int br_switchdev_port_vlan_del(struct net_device *dev, u16 vid); 1887 void br_switchdev_init(struct net_bridge *br); 1888 1889 static inline void br_switchdev_frame_unmark(struct sk_buff *skb) 1890 { 1891 skb->offload_fwd_mark = 0; 1892 } 1893 #else 1894 static inline void nbp_switchdev_frame_mark(const struct net_bridge_port *p, 1895 struct sk_buff *skb) 1896 { 1897 } 1898 1899 static inline bool nbp_switchdev_allowed_egress(const struct net_bridge_port *p, 1900 const struct sk_buff *skb) 1901 { 1902 return true; 1903 } 1904 1905 static inline int br_switchdev_set_port_flag(struct net_bridge_port *p, 1906 unsigned long flags, 1907 unsigned long mask, 1908 struct netlink_ext_ack *extack) 1909 { 1910 return 0; 1911 } 1912 1913 static inline int br_switchdev_port_vlan_add(struct net_device *dev, 1914 u16 vid, u16 flags, 1915 struct netlink_ext_ack *extack) 1916 { 1917 return -EOPNOTSUPP; 1918 } 1919 1920 static inline int br_switchdev_port_vlan_del(struct net_device *dev, u16 vid) 1921 { 1922 return -EOPNOTSUPP; 1923 } 1924 1925 static inline void 1926 br_switchdev_fdb_notify(struct net_bridge *br, 1927 const struct net_bridge_fdb_entry *fdb, int type) 1928 { 1929 } 1930 1931 static inline void br_switchdev_frame_unmark(struct sk_buff *skb) 1932 { 1933 } 1934 1935 static inline void br_switchdev_init(struct net_bridge *br) 1936 { 1937 } 1938 1939 #endif /* CONFIG_NET_SWITCHDEV */ 1940 1941 /* br_arp_nd_proxy.c */ 1942 void br_recalculate_neigh_suppress_enabled(struct net_bridge *br); 1943 void br_do_proxy_suppress_arp(struct sk_buff *skb, struct net_bridge *br, 1944 u16 vid, struct net_bridge_port *p); 1945 void br_do_suppress_nd(struct sk_buff *skb, struct net_bridge *br, 1946 u16 vid, struct net_bridge_port *p, struct nd_msg *msg); 1947 struct nd_msg *br_is_nd_neigh_msg(struct sk_buff *skb, struct nd_msg *m); 1948 #endif 1949