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 #define BR_MULTICAST_QUERY_INTVL_MIN msecs_to_jiffies(1000) 32 #define BR_MULTICAST_STARTUP_QUERY_INTVL_MIN BR_MULTICAST_QUERY_INTVL_MIN 33 34 #define BR_HWDOM_MAX BITS_PER_LONG 35 36 #define BR_VERSION "2.3" 37 38 /* Control of forwarding link local multicast */ 39 #define BR_GROUPFWD_DEFAULT 0 40 /* Don't allow forwarding of control protocols like STP, MAC PAUSE and LACP */ 41 enum { 42 BR_GROUPFWD_STP = BIT(0), 43 BR_GROUPFWD_MACPAUSE = BIT(1), 44 BR_GROUPFWD_LACP = BIT(2), 45 }; 46 47 #define BR_GROUPFWD_RESTRICTED (BR_GROUPFWD_STP | BR_GROUPFWD_MACPAUSE | \ 48 BR_GROUPFWD_LACP) 49 /* The Nearest Customer Bridge Group Address, 01-80-C2-00-00-[00,0B,0C,0D,0F] */ 50 #define BR_GROUPFWD_8021AD 0xB801u 51 52 /* Path to usermode spanning tree program */ 53 #define BR_STP_PROG "/sbin/bridge-stp" 54 55 #define BR_FDB_NOTIFY_SETTABLE_BITS (FDB_NOTIFY_BIT | FDB_NOTIFY_INACTIVE_BIT) 56 57 typedef struct bridge_id bridge_id; 58 typedef struct mac_addr mac_addr; 59 typedef __u16 port_id; 60 61 struct bridge_id { 62 unsigned char prio[2]; 63 unsigned char addr[ETH_ALEN]; 64 }; 65 66 struct mac_addr { 67 unsigned char addr[ETH_ALEN]; 68 }; 69 70 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 71 /* our own querier */ 72 struct bridge_mcast_own_query { 73 struct timer_list timer; 74 u32 startup_sent; 75 }; 76 77 /* other querier */ 78 struct bridge_mcast_other_query { 79 struct timer_list timer; 80 unsigned long delay_time; 81 }; 82 83 /* selected querier */ 84 struct bridge_mcast_querier { 85 struct br_ip addr; 86 int port_ifidx; 87 seqcount_spinlock_t seq; 88 }; 89 90 /* IGMP/MLD statistics */ 91 struct bridge_mcast_stats { 92 struct br_mcast_stats mstats; 93 struct u64_stats_sync syncp; 94 }; 95 #endif 96 97 /* net_bridge_mcast_port must be always defined due to forwarding stubs */ 98 struct net_bridge_mcast_port { 99 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 100 struct net_bridge_port *port; 101 struct net_bridge_vlan *vlan; 102 103 struct bridge_mcast_own_query ip4_own_query; 104 struct timer_list ip4_mc_router_timer; 105 struct hlist_node ip4_rlist; 106 #if IS_ENABLED(CONFIG_IPV6) 107 struct bridge_mcast_own_query ip6_own_query; 108 struct timer_list ip6_mc_router_timer; 109 struct hlist_node ip6_rlist; 110 #endif /* IS_ENABLED(CONFIG_IPV6) */ 111 unsigned char multicast_router; 112 #endif /* CONFIG_BRIDGE_IGMP_SNOOPING */ 113 }; 114 115 /* net_bridge_mcast must be always defined due to forwarding stubs */ 116 struct net_bridge_mcast { 117 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 118 struct net_bridge *br; 119 struct net_bridge_vlan *vlan; 120 121 u32 multicast_last_member_count; 122 u32 multicast_startup_query_count; 123 124 u8 multicast_querier; 125 u8 multicast_igmp_version; 126 u8 multicast_router; 127 #if IS_ENABLED(CONFIG_IPV6) 128 u8 multicast_mld_version; 129 #endif 130 unsigned long multicast_last_member_interval; 131 unsigned long multicast_membership_interval; 132 unsigned long multicast_querier_interval; 133 unsigned long multicast_query_interval; 134 unsigned long multicast_query_response_interval; 135 unsigned long multicast_startup_query_interval; 136 struct hlist_head ip4_mc_router_list; 137 struct timer_list ip4_mc_router_timer; 138 struct bridge_mcast_other_query ip4_other_query; 139 struct bridge_mcast_own_query ip4_own_query; 140 struct bridge_mcast_querier ip4_querier; 141 #if IS_ENABLED(CONFIG_IPV6) 142 struct hlist_head ip6_mc_router_list; 143 struct timer_list ip6_mc_router_timer; 144 struct bridge_mcast_other_query ip6_other_query; 145 struct bridge_mcast_own_query ip6_own_query; 146 struct bridge_mcast_querier ip6_querier; 147 #endif /* IS_ENABLED(CONFIG_IPV6) */ 148 #endif /* CONFIG_BRIDGE_IGMP_SNOOPING */ 149 }; 150 151 struct br_tunnel_info { 152 __be64 tunnel_id; 153 struct metadata_dst __rcu *tunnel_dst; 154 }; 155 156 /* private vlan flags */ 157 enum { 158 BR_VLFLAG_PER_PORT_STATS = BIT(0), 159 BR_VLFLAG_ADDED_BY_SWITCHDEV = BIT(1), 160 BR_VLFLAG_MCAST_ENABLED = BIT(2), 161 BR_VLFLAG_GLOBAL_MCAST_ENABLED = BIT(3), 162 }; 163 164 /** 165 * struct net_bridge_vlan - per-vlan entry 166 * 167 * @vnode: rhashtable member 168 * @vid: VLAN id 169 * @flags: bridge vlan flags 170 * @priv_flags: private (in-kernel) bridge vlan flags 171 * @state: STP state (e.g. blocking, learning, forwarding) 172 * @stats: per-cpu VLAN statistics 173 * @br: if MASTER flag set, this points to a bridge struct 174 * @port: if MASTER flag unset, this points to a port struct 175 * @refcnt: if MASTER flag set, this is bumped for each port referencing it 176 * @brvlan: if MASTER flag unset, this points to the global per-VLAN context 177 * for this VLAN entry 178 * @br_mcast_ctx: if MASTER flag set, this is the global vlan multicast context 179 * @port_mcast_ctx: if MASTER flag unset, this is the per-port/vlan multicast 180 * context 181 * @vlist: sorted list of VLAN entries 182 * @rcu: used for entry destruction 183 * 184 * This structure is shared between the global per-VLAN entries contained in 185 * the bridge rhashtable and the local per-port per-VLAN entries contained in 186 * the port's rhashtable. The union entries should be interpreted depending on 187 * the entry flags that are set. 188 */ 189 struct net_bridge_vlan { 190 struct rhash_head vnode; 191 struct rhash_head tnode; 192 u16 vid; 193 u16 flags; 194 u16 priv_flags; 195 u8 state; 196 struct pcpu_sw_netstats __percpu *stats; 197 union { 198 struct net_bridge *br; 199 struct net_bridge_port *port; 200 }; 201 union { 202 refcount_t refcnt; 203 struct net_bridge_vlan *brvlan; 204 }; 205 206 struct br_tunnel_info tinfo; 207 208 union { 209 struct net_bridge_mcast br_mcast_ctx; 210 struct net_bridge_mcast_port port_mcast_ctx; 211 }; 212 213 struct list_head vlist; 214 215 struct rcu_head rcu; 216 }; 217 218 /** 219 * struct net_bridge_vlan_group 220 * 221 * @vlan_hash: VLAN entry rhashtable 222 * @vlan_list: sorted VLAN entry list 223 * @num_vlans: number of total VLAN entries 224 * @pvid: PVID VLAN id 225 * @pvid_state: PVID's STP state (e.g. forwarding, learning, blocking) 226 * 227 * IMPORTANT: Be careful when checking if there're VLAN entries using list 228 * primitives because the bridge can have entries in its list which 229 * are just for global context but not for filtering, i.e. they have 230 * the master flag set but not the brentry flag. If you have to check 231 * if there're "real" entries in the bridge please test @num_vlans 232 */ 233 struct net_bridge_vlan_group { 234 struct rhashtable vlan_hash; 235 struct rhashtable tunnel_hash; 236 struct list_head vlan_list; 237 u16 num_vlans; 238 u16 pvid; 239 u8 pvid_state; 240 }; 241 242 /* bridge fdb flags */ 243 enum { 244 BR_FDB_LOCAL, 245 BR_FDB_STATIC, 246 BR_FDB_STICKY, 247 BR_FDB_ADDED_BY_USER, 248 BR_FDB_ADDED_BY_EXT_LEARN, 249 BR_FDB_OFFLOADED, 250 BR_FDB_NOTIFY, 251 BR_FDB_NOTIFY_INACTIVE 252 }; 253 254 struct net_bridge_fdb_key { 255 mac_addr addr; 256 u16 vlan_id; 257 }; 258 259 struct net_bridge_fdb_entry { 260 struct rhash_head rhnode; 261 struct net_bridge_port *dst; 262 263 struct net_bridge_fdb_key key; 264 struct hlist_node fdb_node; 265 unsigned long flags; 266 267 /* write-heavy members should not affect lookups */ 268 unsigned long updated ____cacheline_aligned_in_smp; 269 unsigned long used; 270 271 struct rcu_head rcu; 272 }; 273 274 #define MDB_PG_FLAGS_PERMANENT BIT(0) 275 #define MDB_PG_FLAGS_OFFLOAD BIT(1) 276 #define MDB_PG_FLAGS_FAST_LEAVE BIT(2) 277 #define MDB_PG_FLAGS_STAR_EXCL BIT(3) 278 #define MDB_PG_FLAGS_BLOCKED BIT(4) 279 280 #define PG_SRC_ENT_LIMIT 32 281 282 #define BR_SGRP_F_DELETE BIT(0) 283 #define BR_SGRP_F_SEND BIT(1) 284 #define BR_SGRP_F_INSTALLED BIT(2) 285 286 struct net_bridge_mcast_gc { 287 struct hlist_node gc_node; 288 void (*destroy)(struct net_bridge_mcast_gc *gc); 289 }; 290 291 struct net_bridge_group_src { 292 struct hlist_node node; 293 294 struct br_ip addr; 295 struct net_bridge_port_group *pg; 296 u8 flags; 297 u8 src_query_rexmit_cnt; 298 struct timer_list timer; 299 300 struct net_bridge *br; 301 struct net_bridge_mcast_gc mcast_gc; 302 struct rcu_head rcu; 303 }; 304 305 struct net_bridge_port_group_sg_key { 306 struct net_bridge_port *port; 307 struct br_ip addr; 308 }; 309 310 struct net_bridge_port_group { 311 struct net_bridge_port_group __rcu *next; 312 struct net_bridge_port_group_sg_key key; 313 unsigned char eth_addr[ETH_ALEN] __aligned(2); 314 unsigned char flags; 315 unsigned char filter_mode; 316 unsigned char grp_query_rexmit_cnt; 317 unsigned char rt_protocol; 318 319 struct hlist_head src_list; 320 unsigned int src_ents; 321 struct timer_list timer; 322 struct timer_list rexmit_timer; 323 struct hlist_node mglist; 324 struct rb_root eht_set_tree; 325 struct rb_root eht_host_tree; 326 327 struct rhash_head rhnode; 328 struct net_bridge_mcast_gc mcast_gc; 329 struct rcu_head rcu; 330 }; 331 332 struct net_bridge_mdb_entry { 333 struct rhash_head rhnode; 334 struct net_bridge *br; 335 struct net_bridge_port_group __rcu *ports; 336 struct br_ip addr; 337 bool host_joined; 338 339 struct timer_list timer; 340 struct hlist_node mdb_node; 341 342 struct net_bridge_mcast_gc mcast_gc; 343 struct rcu_head rcu; 344 }; 345 346 struct net_bridge_port { 347 struct net_bridge *br; 348 struct net_device *dev; 349 struct list_head list; 350 351 unsigned long flags; 352 #ifdef CONFIG_BRIDGE_VLAN_FILTERING 353 struct net_bridge_vlan_group __rcu *vlgrp; 354 #endif 355 struct net_bridge_port __rcu *backup_port; 356 357 /* STP */ 358 u8 priority; 359 u8 state; 360 u16 port_no; 361 unsigned char topology_change_ack; 362 unsigned char config_pending; 363 port_id port_id; 364 port_id designated_port; 365 bridge_id designated_root; 366 bridge_id designated_bridge; 367 u32 path_cost; 368 u32 designated_cost; 369 unsigned long designated_age; 370 371 struct timer_list forward_delay_timer; 372 struct timer_list hold_timer; 373 struct timer_list message_age_timer; 374 struct kobject kobj; 375 struct rcu_head rcu; 376 377 struct net_bridge_mcast_port multicast_ctx; 378 379 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 380 struct bridge_mcast_stats __percpu *mcast_stats; 381 382 u32 multicast_eht_hosts_limit; 383 u32 multicast_eht_hosts_cnt; 384 struct hlist_head mglist; 385 #endif 386 387 #ifdef CONFIG_SYSFS 388 char sysfs_name[IFNAMSIZ]; 389 #endif 390 391 #ifdef CONFIG_NET_POLL_CONTROLLER 392 struct netpoll *np; 393 #endif 394 #ifdef CONFIG_NET_SWITCHDEV 395 /* Identifier used to group ports that share the same switchdev 396 * hardware domain. 397 */ 398 int hwdom; 399 int offload_count; 400 struct netdev_phys_item_id ppid; 401 #endif 402 u16 group_fwd_mask; 403 u16 backup_redirected_cnt; 404 405 struct bridge_stp_xstats stp_xstats; 406 }; 407 408 #define kobj_to_brport(obj) container_of(obj, struct net_bridge_port, kobj) 409 410 #define br_auto_port(p) ((p)->flags & BR_AUTO_MASK) 411 #define br_promisc_port(p) ((p)->flags & BR_PROMISC) 412 413 static inline struct net_bridge_port *br_port_get_rcu(const struct net_device *dev) 414 { 415 return rcu_dereference(dev->rx_handler_data); 416 } 417 418 static inline struct net_bridge_port *br_port_get_rtnl(const struct net_device *dev) 419 { 420 return netif_is_bridge_port(dev) ? 421 rtnl_dereference(dev->rx_handler_data) : NULL; 422 } 423 424 static inline struct net_bridge_port *br_port_get_rtnl_rcu(const struct net_device *dev) 425 { 426 return netif_is_bridge_port(dev) ? 427 rcu_dereference_rtnl(dev->rx_handler_data) : NULL; 428 } 429 430 enum net_bridge_opts { 431 BROPT_VLAN_ENABLED, 432 BROPT_VLAN_STATS_ENABLED, 433 BROPT_NF_CALL_IPTABLES, 434 BROPT_NF_CALL_IP6TABLES, 435 BROPT_NF_CALL_ARPTABLES, 436 BROPT_GROUP_ADDR_SET, 437 BROPT_MULTICAST_ENABLED, 438 BROPT_MULTICAST_QUERY_USE_IFADDR, 439 BROPT_MULTICAST_STATS_ENABLED, 440 BROPT_HAS_IPV6_ADDR, 441 BROPT_NEIGH_SUPPRESS_ENABLED, 442 BROPT_MTU_SET_BY_USER, 443 BROPT_VLAN_STATS_PER_PORT, 444 BROPT_NO_LL_LEARN, 445 BROPT_VLAN_BRIDGE_BINDING, 446 BROPT_MCAST_VLAN_SNOOPING_ENABLED, 447 }; 448 449 struct net_bridge { 450 spinlock_t lock; 451 spinlock_t hash_lock; 452 struct hlist_head frame_type_list; 453 struct net_device *dev; 454 unsigned long options; 455 /* These fields are accessed on each packet */ 456 #ifdef CONFIG_BRIDGE_VLAN_FILTERING 457 __be16 vlan_proto; 458 u16 default_pvid; 459 struct net_bridge_vlan_group __rcu *vlgrp; 460 #endif 461 462 struct rhashtable fdb_hash_tbl; 463 struct list_head port_list; 464 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER) 465 union { 466 struct rtable fake_rtable; 467 struct rt6_info fake_rt6_info; 468 }; 469 #endif 470 u16 group_fwd_mask; 471 u16 group_fwd_mask_required; 472 473 /* STP */ 474 bridge_id designated_root; 475 bridge_id bridge_id; 476 unsigned char topology_change; 477 unsigned char topology_change_detected; 478 u16 root_port; 479 unsigned long max_age; 480 unsigned long hello_time; 481 unsigned long forward_delay; 482 unsigned long ageing_time; 483 unsigned long bridge_max_age; 484 unsigned long bridge_hello_time; 485 unsigned long bridge_forward_delay; 486 unsigned long bridge_ageing_time; 487 u32 root_path_cost; 488 489 u8 group_addr[ETH_ALEN]; 490 491 enum { 492 BR_NO_STP, /* no spanning tree */ 493 BR_KERNEL_STP, /* old STP in kernel */ 494 BR_USER_STP, /* new RSTP in userspace */ 495 } stp_enabled; 496 497 struct net_bridge_mcast multicast_ctx; 498 499 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 500 struct bridge_mcast_stats __percpu *mcast_stats; 501 502 u32 hash_max; 503 504 spinlock_t multicast_lock; 505 506 struct rhashtable mdb_hash_tbl; 507 struct rhashtable sg_port_tbl; 508 509 struct hlist_head mcast_gc_list; 510 struct hlist_head mdb_list; 511 512 struct work_struct mcast_gc_work; 513 #endif 514 515 struct timer_list hello_timer; 516 struct timer_list tcn_timer; 517 struct timer_list topology_change_timer; 518 struct delayed_work gc_work; 519 struct kobject *ifobj; 520 u32 auto_cnt; 521 522 #ifdef CONFIG_NET_SWITCHDEV 523 /* Counter used to make sure that hardware domains get unique 524 * identifiers in case a bridge spans multiple switchdev instances. 525 */ 526 int last_hwdom; 527 /* Bit mask of hardware domain numbers in use */ 528 unsigned long busy_hwdoms; 529 #endif 530 struct hlist_head fdb_list; 531 532 #if IS_ENABLED(CONFIG_BRIDGE_MRP) 533 struct hlist_head mrp_list; 534 #endif 535 #if IS_ENABLED(CONFIG_BRIDGE_CFM) 536 struct hlist_head mep_list; 537 #endif 538 }; 539 540 struct br_input_skb_cb { 541 struct net_device *brdev; 542 543 u16 frag_max_size; 544 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 545 u8 igmp; 546 u8 mrouters_only:1; 547 #endif 548 u8 proxyarp_replied:1; 549 u8 src_port_isolated:1; 550 #ifdef CONFIG_BRIDGE_VLAN_FILTERING 551 u8 vlan_filtered:1; 552 #endif 553 #ifdef CONFIG_NETFILTER_FAMILY_BRIDGE 554 u8 br_netfilter_broute:1; 555 #endif 556 557 #ifdef CONFIG_NET_SWITCHDEV 558 /* Set if TX data plane offloading is used towards at least one 559 * hardware domain. 560 */ 561 u8 tx_fwd_offload:1; 562 /* The switchdev hardware domain from which this packet was received. 563 * If skb->offload_fwd_mark was set, then this packet was already 564 * forwarded by hardware to the other ports in the source hardware 565 * domain, otherwise it wasn't. 566 */ 567 int src_hwdom; 568 /* Bit mask of hardware domains towards this packet has already been 569 * transmitted using the TX data plane offload. 570 */ 571 unsigned long fwd_hwdoms; 572 #endif 573 }; 574 575 #define BR_INPUT_SKB_CB(__skb) ((struct br_input_skb_cb *)(__skb)->cb) 576 577 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 578 # define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (BR_INPUT_SKB_CB(__skb)->mrouters_only) 579 #else 580 # define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (0) 581 #endif 582 583 #define br_printk(level, br, format, args...) \ 584 printk(level "%s: " format, (br)->dev->name, ##args) 585 586 #define br_err(__br, format, args...) \ 587 br_printk(KERN_ERR, __br, format, ##args) 588 #define br_warn(__br, format, args...) \ 589 br_printk(KERN_WARNING, __br, format, ##args) 590 #define br_notice(__br, format, args...) \ 591 br_printk(KERN_NOTICE, __br, format, ##args) 592 #define br_info(__br, format, args...) \ 593 br_printk(KERN_INFO, __br, format, ##args) 594 595 #define br_debug(br, format, args...) \ 596 pr_debug("%s: " format, (br)->dev->name, ##args) 597 598 /* called under bridge lock */ 599 static inline int br_is_root_bridge(const struct net_bridge *br) 600 { 601 return !memcmp(&br->bridge_id, &br->designated_root, 8); 602 } 603 604 /* check if a VLAN entry is global */ 605 static inline bool br_vlan_is_master(const struct net_bridge_vlan *v) 606 { 607 return v->flags & BRIDGE_VLAN_INFO_MASTER; 608 } 609 610 /* check if a VLAN entry is used by the bridge */ 611 static inline bool br_vlan_is_brentry(const struct net_bridge_vlan *v) 612 { 613 return v->flags & BRIDGE_VLAN_INFO_BRENTRY; 614 } 615 616 /* check if we should use the vlan entry, returns false if it's only context */ 617 static inline bool br_vlan_should_use(const struct net_bridge_vlan *v) 618 { 619 if (br_vlan_is_master(v)) { 620 if (br_vlan_is_brentry(v)) 621 return true; 622 else 623 return false; 624 } 625 626 return true; 627 } 628 629 static inline bool nbp_state_should_learn(const struct net_bridge_port *p) 630 { 631 return p->state == BR_STATE_LEARNING || p->state == BR_STATE_FORWARDING; 632 } 633 634 static inline bool br_vlan_valid_id(u16 vid, struct netlink_ext_ack *extack) 635 { 636 bool ret = vid > 0 && vid < VLAN_VID_MASK; 637 638 if (!ret) 639 NL_SET_ERR_MSG_MOD(extack, "Vlan id is invalid"); 640 641 return ret; 642 } 643 644 static inline bool br_vlan_valid_range(const struct bridge_vlan_info *cur, 645 const struct bridge_vlan_info *last, 646 struct netlink_ext_ack *extack) 647 { 648 /* pvid flag is not allowed in ranges */ 649 if (cur->flags & BRIDGE_VLAN_INFO_PVID) { 650 NL_SET_ERR_MSG_MOD(extack, "Pvid isn't allowed in a range"); 651 return false; 652 } 653 654 /* when cur is the range end, check if: 655 * - it has range start flag 656 * - range ids are invalid (end is equal to or before start) 657 */ 658 if (last) { 659 if (cur->flags & BRIDGE_VLAN_INFO_RANGE_BEGIN) { 660 NL_SET_ERR_MSG_MOD(extack, "Found a new vlan range start while processing one"); 661 return false; 662 } else if (!(cur->flags & BRIDGE_VLAN_INFO_RANGE_END)) { 663 NL_SET_ERR_MSG_MOD(extack, "Vlan range end flag is missing"); 664 return false; 665 } else if (cur->vid <= last->vid) { 666 NL_SET_ERR_MSG_MOD(extack, "End vlan id is less than or equal to start vlan id"); 667 return false; 668 } 669 } 670 671 /* check for required range flags */ 672 if (!(cur->flags & (BRIDGE_VLAN_INFO_RANGE_BEGIN | 673 BRIDGE_VLAN_INFO_RANGE_END))) { 674 NL_SET_ERR_MSG_MOD(extack, "Both vlan range flags are missing"); 675 return false; 676 } 677 678 return true; 679 } 680 681 static inline u8 br_vlan_multicast_router(const struct net_bridge_vlan *v) 682 { 683 u8 mcast_router = MDB_RTR_TYPE_DISABLED; 684 685 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 686 if (!br_vlan_is_master(v)) 687 mcast_router = v->port_mcast_ctx.multicast_router; 688 else 689 mcast_router = v->br_mcast_ctx.multicast_router; 690 #endif 691 692 return mcast_router; 693 } 694 695 static inline int br_afspec_cmd_to_rtm(int cmd) 696 { 697 switch (cmd) { 698 case RTM_SETLINK: 699 return RTM_NEWVLAN; 700 case RTM_DELLINK: 701 return RTM_DELVLAN; 702 } 703 704 return 0; 705 } 706 707 static inline int br_opt_get(const struct net_bridge *br, 708 enum net_bridge_opts opt) 709 { 710 return test_bit(opt, &br->options); 711 } 712 713 int br_boolopt_toggle(struct net_bridge *br, enum br_boolopt_id opt, bool on, 714 struct netlink_ext_ack *extack); 715 int br_boolopt_get(const struct net_bridge *br, enum br_boolopt_id opt); 716 int br_boolopt_multi_toggle(struct net_bridge *br, 717 struct br_boolopt_multi *bm, 718 struct netlink_ext_ack *extack); 719 void br_boolopt_multi_get(const struct net_bridge *br, 720 struct br_boolopt_multi *bm); 721 void br_opt_toggle(struct net_bridge *br, enum net_bridge_opts opt, bool on); 722 723 /* br_device.c */ 724 void br_dev_setup(struct net_device *dev); 725 void br_dev_delete(struct net_device *dev, struct list_head *list); 726 netdev_tx_t br_dev_xmit(struct sk_buff *skb, struct net_device *dev); 727 #ifdef CONFIG_NET_POLL_CONTROLLER 728 static inline void br_netpoll_send_skb(const struct net_bridge_port *p, 729 struct sk_buff *skb) 730 { 731 netpoll_send_skb(p->np, skb); 732 } 733 734 int br_netpoll_enable(struct net_bridge_port *p); 735 void br_netpoll_disable(struct net_bridge_port *p); 736 #else 737 static inline void br_netpoll_send_skb(const struct net_bridge_port *p, 738 struct sk_buff *skb) 739 { 740 } 741 742 static inline int br_netpoll_enable(struct net_bridge_port *p) 743 { 744 return 0; 745 } 746 747 static inline void br_netpoll_disable(struct net_bridge_port *p) 748 { 749 } 750 #endif 751 752 /* br_fdb.c */ 753 int br_fdb_init(void); 754 void br_fdb_fini(void); 755 int br_fdb_hash_init(struct net_bridge *br); 756 void br_fdb_hash_fini(struct net_bridge *br); 757 void br_fdb_flush(struct net_bridge *br); 758 void br_fdb_find_delete_local(struct net_bridge *br, 759 const struct net_bridge_port *p, 760 const unsigned char *addr, u16 vid); 761 void br_fdb_changeaddr(struct net_bridge_port *p, const unsigned char *newaddr); 762 void br_fdb_change_mac_address(struct net_bridge *br, const u8 *newaddr); 763 void br_fdb_cleanup(struct work_struct *work); 764 void br_fdb_delete_by_port(struct net_bridge *br, 765 const struct net_bridge_port *p, u16 vid, int do_all); 766 struct net_bridge_fdb_entry *br_fdb_find_rcu(struct net_bridge *br, 767 const unsigned char *addr, 768 __u16 vid); 769 int br_fdb_test_addr(struct net_device *dev, unsigned char *addr); 770 int br_fdb_fillbuf(struct net_bridge *br, void *buf, unsigned long count, 771 unsigned long off); 772 int br_fdb_add_local(struct net_bridge *br, struct net_bridge_port *source, 773 const unsigned char *addr, u16 vid); 774 void br_fdb_update(struct net_bridge *br, struct net_bridge_port *source, 775 const unsigned char *addr, u16 vid, unsigned long flags); 776 777 int br_fdb_delete(struct ndmsg *ndm, struct nlattr *tb[], 778 struct net_device *dev, const unsigned char *addr, u16 vid); 779 int br_fdb_add(struct ndmsg *nlh, struct nlattr *tb[], struct net_device *dev, 780 const unsigned char *addr, u16 vid, u16 nlh_flags, 781 struct netlink_ext_ack *extack); 782 int br_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb, 783 struct net_device *dev, struct net_device *fdev, int *idx); 784 int br_fdb_get(struct sk_buff *skb, struct nlattr *tb[], struct net_device *dev, 785 const unsigned char *addr, u16 vid, u32 portid, u32 seq, 786 struct netlink_ext_ack *extack); 787 int br_fdb_sync_static(struct net_bridge *br, struct net_bridge_port *p); 788 void br_fdb_unsync_static(struct net_bridge *br, struct net_bridge_port *p); 789 int br_fdb_external_learn_add(struct net_bridge *br, struct net_bridge_port *p, 790 const unsigned char *addr, u16 vid, 791 bool swdev_notify); 792 int br_fdb_external_learn_del(struct net_bridge *br, struct net_bridge_port *p, 793 const unsigned char *addr, u16 vid, 794 bool swdev_notify); 795 void br_fdb_offloaded_set(struct net_bridge *br, struct net_bridge_port *p, 796 const unsigned char *addr, u16 vid, bool offloaded); 797 798 /* br_forward.c */ 799 enum br_pkt_type { 800 BR_PKT_UNICAST, 801 BR_PKT_MULTICAST, 802 BR_PKT_BROADCAST 803 }; 804 int br_dev_queue_push_xmit(struct net *net, struct sock *sk, struct sk_buff *skb); 805 void br_forward(const struct net_bridge_port *to, struct sk_buff *skb, 806 bool local_rcv, bool local_orig); 807 int br_forward_finish(struct net *net, struct sock *sk, struct sk_buff *skb); 808 void br_flood(struct net_bridge *br, struct sk_buff *skb, 809 enum br_pkt_type pkt_type, bool local_rcv, bool local_orig); 810 811 /* return true if both source port and dest port are isolated */ 812 static inline bool br_skb_isolated(const struct net_bridge_port *to, 813 const struct sk_buff *skb) 814 { 815 return BR_INPUT_SKB_CB(skb)->src_port_isolated && 816 (to->flags & BR_ISOLATED); 817 } 818 819 /* br_if.c */ 820 void br_port_carrier_check(struct net_bridge_port *p, bool *notified); 821 int br_add_bridge(struct net *net, const char *name); 822 int br_del_bridge(struct net *net, const char *name); 823 int br_add_if(struct net_bridge *br, struct net_device *dev, 824 struct netlink_ext_ack *extack); 825 int br_del_if(struct net_bridge *br, struct net_device *dev); 826 void br_mtu_auto_adjust(struct net_bridge *br); 827 netdev_features_t br_features_recompute(struct net_bridge *br, 828 netdev_features_t features); 829 void br_port_flags_change(struct net_bridge_port *port, unsigned long mask); 830 void br_manage_promisc(struct net_bridge *br); 831 int nbp_backup_change(struct net_bridge_port *p, struct net_device *backup_dev); 832 833 /* br_input.c */ 834 int br_handle_frame_finish(struct net *net, struct sock *sk, struct sk_buff *skb); 835 rx_handler_func_t *br_get_rx_handler(const struct net_device *dev); 836 837 struct br_frame_type { 838 __be16 type; 839 int (*frame_handler)(struct net_bridge_port *port, 840 struct sk_buff *skb); 841 struct hlist_node list; 842 }; 843 844 void br_add_frame(struct net_bridge *br, struct br_frame_type *ft); 845 void br_del_frame(struct net_bridge *br, struct br_frame_type *ft); 846 847 static inline bool br_rx_handler_check_rcu(const struct net_device *dev) 848 { 849 return rcu_dereference(dev->rx_handler) == br_get_rx_handler(dev); 850 } 851 852 static inline bool br_rx_handler_check_rtnl(const struct net_device *dev) 853 { 854 return rcu_dereference_rtnl(dev->rx_handler) == br_get_rx_handler(dev); 855 } 856 857 static inline struct net_bridge_port *br_port_get_check_rcu(const struct net_device *dev) 858 { 859 return br_rx_handler_check_rcu(dev) ? br_port_get_rcu(dev) : NULL; 860 } 861 862 static inline struct net_bridge_port * 863 br_port_get_check_rtnl(const struct net_device *dev) 864 { 865 return br_rx_handler_check_rtnl(dev) ? br_port_get_rtnl_rcu(dev) : NULL; 866 } 867 868 /* br_ioctl.c */ 869 int br_dev_siocdevprivate(struct net_device *dev, struct ifreq *rq, 870 void __user *data, int cmd); 871 int br_ioctl_stub(struct net *net, struct net_bridge *br, unsigned int cmd, 872 struct ifreq *ifr, void __user *uarg); 873 874 /* br_multicast.c */ 875 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 876 int br_multicast_rcv(struct net_bridge_mcast **brmctx, 877 struct net_bridge_mcast_port **pmctx, 878 struct net_bridge_vlan *vlan, 879 struct sk_buff *skb, u16 vid); 880 struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge_mcast *brmctx, 881 struct sk_buff *skb, u16 vid); 882 int br_multicast_add_port(struct net_bridge_port *port); 883 void br_multicast_del_port(struct net_bridge_port *port); 884 void br_multicast_enable_port(struct net_bridge_port *port); 885 void br_multicast_disable_port(struct net_bridge_port *port); 886 void br_multicast_init(struct net_bridge *br); 887 void br_multicast_join_snoopers(struct net_bridge *br); 888 void br_multicast_leave_snoopers(struct net_bridge *br); 889 void br_multicast_open(struct net_bridge *br); 890 void br_multicast_stop(struct net_bridge *br); 891 void br_multicast_dev_del(struct net_bridge *br); 892 void br_multicast_flood(struct net_bridge_mdb_entry *mdst, struct sk_buff *skb, 893 struct net_bridge_mcast *brmctx, 894 bool local_rcv, bool local_orig); 895 int br_multicast_set_router(struct net_bridge_mcast *brmctx, unsigned long val); 896 int br_multicast_set_port_router(struct net_bridge_mcast_port *pmctx, 897 unsigned long val); 898 int br_multicast_set_vlan_router(struct net_bridge_vlan *v, u8 mcast_router); 899 int br_multicast_toggle(struct net_bridge *br, unsigned long val, 900 struct netlink_ext_ack *extack); 901 int br_multicast_set_querier(struct net_bridge_mcast *brmctx, unsigned long val); 902 int br_multicast_set_hash_max(struct net_bridge *br, unsigned long val); 903 int br_multicast_set_igmp_version(struct net_bridge_mcast *brmctx, 904 unsigned long val); 905 #if IS_ENABLED(CONFIG_IPV6) 906 int br_multicast_set_mld_version(struct net_bridge_mcast *brmctx, 907 unsigned long val); 908 #endif 909 struct net_bridge_mdb_entry * 910 br_mdb_ip_get(struct net_bridge *br, struct br_ip *dst); 911 struct net_bridge_mdb_entry * 912 br_multicast_new_group(struct net_bridge *br, struct br_ip *group); 913 struct net_bridge_port_group * 914 br_multicast_new_port_group(struct net_bridge_port *port, struct br_ip *group, 915 struct net_bridge_port_group __rcu *next, 916 unsigned char flags, const unsigned char *src, 917 u8 filter_mode, u8 rt_protocol); 918 int br_mdb_hash_init(struct net_bridge *br); 919 void br_mdb_hash_fini(struct net_bridge *br); 920 void br_mdb_notify(struct net_device *dev, struct net_bridge_mdb_entry *mp, 921 struct net_bridge_port_group *pg, int type); 922 void br_rtr_notify(struct net_device *dev, struct net_bridge_mcast_port *pmctx, 923 int type); 924 void br_multicast_del_pg(struct net_bridge_mdb_entry *mp, 925 struct net_bridge_port_group *pg, 926 struct net_bridge_port_group __rcu **pp); 927 void br_multicast_count(struct net_bridge *br, 928 const struct net_bridge_port *p, 929 const struct sk_buff *skb, u8 type, u8 dir); 930 int br_multicast_init_stats(struct net_bridge *br); 931 void br_multicast_uninit_stats(struct net_bridge *br); 932 void br_multicast_get_stats(const struct net_bridge *br, 933 const struct net_bridge_port *p, 934 struct br_mcast_stats *dest); 935 void br_mdb_init(void); 936 void br_mdb_uninit(void); 937 void br_multicast_host_join(const struct net_bridge_mcast *brmctx, 938 struct net_bridge_mdb_entry *mp, bool notify); 939 void br_multicast_host_leave(struct net_bridge_mdb_entry *mp, bool notify); 940 void br_multicast_star_g_handle_mode(struct net_bridge_port_group *pg, 941 u8 filter_mode); 942 void br_multicast_sg_add_exclude_ports(struct net_bridge_mdb_entry *star_mp, 943 struct net_bridge_port_group *sg); 944 struct net_bridge_group_src * 945 br_multicast_find_group_src(struct net_bridge_port_group *pg, struct br_ip *ip); 946 void br_multicast_del_group_src(struct net_bridge_group_src *src, 947 bool fastleave); 948 void br_multicast_ctx_init(struct net_bridge *br, 949 struct net_bridge_vlan *vlan, 950 struct net_bridge_mcast *brmctx); 951 void br_multicast_ctx_deinit(struct net_bridge_mcast *brmctx); 952 void br_multicast_port_ctx_init(struct net_bridge_port *port, 953 struct net_bridge_vlan *vlan, 954 struct net_bridge_mcast_port *pmctx); 955 void br_multicast_port_ctx_deinit(struct net_bridge_mcast_port *pmctx); 956 void br_multicast_toggle_one_vlan(struct net_bridge_vlan *vlan, bool on); 957 int br_multicast_toggle_vlan_snooping(struct net_bridge *br, bool on, 958 struct netlink_ext_ack *extack); 959 bool br_multicast_toggle_global_vlan(struct net_bridge_vlan *vlan, bool on); 960 961 int br_rports_fill_info(struct sk_buff *skb, 962 const struct net_bridge_mcast *brmctx); 963 int br_multicast_dump_querier_state(struct sk_buff *skb, 964 const struct net_bridge_mcast *brmctx, 965 int nest_attr); 966 size_t br_multicast_querier_state_size(void); 967 size_t br_rports_size(const struct net_bridge_mcast *brmctx); 968 void br_multicast_set_query_intvl(struct net_bridge_mcast *brmctx, 969 unsigned long val); 970 void br_multicast_set_startup_query_intvl(struct net_bridge_mcast *brmctx, 971 unsigned long val); 972 973 static inline bool br_group_is_l2(const struct br_ip *group) 974 { 975 return group->proto == 0; 976 } 977 978 #define mlock_dereference(X, br) \ 979 rcu_dereference_protected(X, lockdep_is_held(&br->multicast_lock)) 980 981 static inline struct hlist_node * 982 br_multicast_get_first_rport_node(struct net_bridge_mcast *brmctx, 983 struct sk_buff *skb) 984 { 985 #if IS_ENABLED(CONFIG_IPV6) 986 if (skb->protocol == htons(ETH_P_IPV6)) 987 return rcu_dereference(hlist_first_rcu(&brmctx->ip6_mc_router_list)); 988 #endif 989 return rcu_dereference(hlist_first_rcu(&brmctx->ip4_mc_router_list)); 990 } 991 992 static inline struct net_bridge_port * 993 br_multicast_rport_from_node_skb(struct hlist_node *rp, struct sk_buff *skb) 994 { 995 struct net_bridge_mcast_port *mctx; 996 997 #if IS_ENABLED(CONFIG_IPV6) 998 if (skb->protocol == htons(ETH_P_IPV6)) 999 mctx = hlist_entry_safe(rp, struct net_bridge_mcast_port, 1000 ip6_rlist); 1001 else 1002 #endif 1003 mctx = hlist_entry_safe(rp, struct net_bridge_mcast_port, 1004 ip4_rlist); 1005 1006 if (mctx) 1007 return mctx->port; 1008 else 1009 return NULL; 1010 } 1011 1012 static inline bool br_ip4_multicast_is_router(struct net_bridge_mcast *brmctx) 1013 { 1014 return timer_pending(&brmctx->ip4_mc_router_timer); 1015 } 1016 1017 static inline bool br_ip6_multicast_is_router(struct net_bridge_mcast *brmctx) 1018 { 1019 #if IS_ENABLED(CONFIG_IPV6) 1020 return timer_pending(&brmctx->ip6_mc_router_timer); 1021 #else 1022 return false; 1023 #endif 1024 } 1025 1026 static inline bool 1027 br_multicast_is_router(struct net_bridge_mcast *brmctx, struct sk_buff *skb) 1028 { 1029 switch (brmctx->multicast_router) { 1030 case MDB_RTR_TYPE_PERM: 1031 return true; 1032 case MDB_RTR_TYPE_TEMP_QUERY: 1033 if (skb) { 1034 if (skb->protocol == htons(ETH_P_IP)) 1035 return br_ip4_multicast_is_router(brmctx); 1036 else if (skb->protocol == htons(ETH_P_IPV6)) 1037 return br_ip6_multicast_is_router(brmctx); 1038 } else { 1039 return br_ip4_multicast_is_router(brmctx) || 1040 br_ip6_multicast_is_router(brmctx); 1041 } 1042 fallthrough; 1043 default: 1044 return false; 1045 } 1046 } 1047 1048 static inline bool 1049 __br_multicast_querier_exists(struct net_bridge_mcast *brmctx, 1050 struct bridge_mcast_other_query *querier, 1051 const bool is_ipv6) 1052 { 1053 bool own_querier_enabled; 1054 1055 if (brmctx->multicast_querier) { 1056 if (is_ipv6 && !br_opt_get(brmctx->br, BROPT_HAS_IPV6_ADDR)) 1057 own_querier_enabled = false; 1058 else 1059 own_querier_enabled = true; 1060 } else { 1061 own_querier_enabled = false; 1062 } 1063 1064 return time_is_before_jiffies(querier->delay_time) && 1065 (own_querier_enabled || timer_pending(&querier->timer)); 1066 } 1067 1068 static inline bool br_multicast_querier_exists(struct net_bridge_mcast *brmctx, 1069 struct ethhdr *eth, 1070 const struct net_bridge_mdb_entry *mdb) 1071 { 1072 switch (eth->h_proto) { 1073 case (htons(ETH_P_IP)): 1074 return __br_multicast_querier_exists(brmctx, 1075 &brmctx->ip4_other_query, false); 1076 #if IS_ENABLED(CONFIG_IPV6) 1077 case (htons(ETH_P_IPV6)): 1078 return __br_multicast_querier_exists(brmctx, 1079 &brmctx->ip6_other_query, true); 1080 #endif 1081 default: 1082 return !!mdb && br_group_is_l2(&mdb->addr); 1083 } 1084 } 1085 1086 static inline bool br_multicast_is_star_g(const struct br_ip *ip) 1087 { 1088 switch (ip->proto) { 1089 case htons(ETH_P_IP): 1090 return ipv4_is_zeronet(ip->src.ip4); 1091 #if IS_ENABLED(CONFIG_IPV6) 1092 case htons(ETH_P_IPV6): 1093 return ipv6_addr_any(&ip->src.ip6); 1094 #endif 1095 default: 1096 return false; 1097 } 1098 } 1099 1100 static inline bool 1101 br_multicast_should_handle_mode(const struct net_bridge_mcast *brmctx, 1102 __be16 proto) 1103 { 1104 switch (proto) { 1105 case htons(ETH_P_IP): 1106 return !!(brmctx->multicast_igmp_version == 3); 1107 #if IS_ENABLED(CONFIG_IPV6) 1108 case htons(ETH_P_IPV6): 1109 return !!(brmctx->multicast_mld_version == 2); 1110 #endif 1111 default: 1112 return false; 1113 } 1114 } 1115 1116 static inline int br_multicast_igmp_type(const struct sk_buff *skb) 1117 { 1118 return BR_INPUT_SKB_CB(skb)->igmp; 1119 } 1120 1121 static inline unsigned long br_multicast_lmqt(const struct net_bridge_mcast *brmctx) 1122 { 1123 return brmctx->multicast_last_member_interval * 1124 brmctx->multicast_last_member_count; 1125 } 1126 1127 static inline unsigned long br_multicast_gmi(const struct net_bridge_mcast *brmctx) 1128 { 1129 return brmctx->multicast_membership_interval; 1130 } 1131 1132 static inline bool 1133 br_multicast_ctx_is_vlan(const struct net_bridge_mcast *brmctx) 1134 { 1135 return !!brmctx->vlan; 1136 } 1137 1138 static inline bool 1139 br_multicast_port_ctx_is_vlan(const struct net_bridge_mcast_port *pmctx) 1140 { 1141 return !!pmctx->vlan; 1142 } 1143 1144 static inline struct net_bridge_mcast * 1145 br_multicast_port_ctx_get_global(const struct net_bridge_mcast_port *pmctx) 1146 { 1147 if (!br_multicast_port_ctx_is_vlan(pmctx)) 1148 return &pmctx->port->br->multicast_ctx; 1149 else 1150 return &pmctx->vlan->brvlan->br_mcast_ctx; 1151 } 1152 1153 static inline bool 1154 br_multicast_ctx_vlan_global_disabled(const struct net_bridge_mcast *brmctx) 1155 { 1156 return br_multicast_ctx_is_vlan(brmctx) && 1157 (!br_opt_get(brmctx->br, BROPT_MCAST_VLAN_SNOOPING_ENABLED) || 1158 !(brmctx->vlan->priv_flags & BR_VLFLAG_GLOBAL_MCAST_ENABLED)); 1159 } 1160 1161 static inline bool 1162 br_multicast_ctx_vlan_disabled(const struct net_bridge_mcast *brmctx) 1163 { 1164 return br_multicast_ctx_is_vlan(brmctx) && 1165 !(brmctx->vlan->priv_flags & BR_VLFLAG_MCAST_ENABLED); 1166 } 1167 1168 static inline bool 1169 br_multicast_port_ctx_vlan_disabled(const struct net_bridge_mcast_port *pmctx) 1170 { 1171 return br_multicast_port_ctx_is_vlan(pmctx) && 1172 !(pmctx->vlan->priv_flags & BR_VLFLAG_MCAST_ENABLED); 1173 } 1174 1175 static inline bool 1176 br_multicast_port_ctx_state_disabled(const struct net_bridge_mcast_port *pmctx) 1177 { 1178 return pmctx->port->state == BR_STATE_DISABLED || 1179 (br_multicast_port_ctx_is_vlan(pmctx) && 1180 (br_multicast_port_ctx_vlan_disabled(pmctx) || 1181 pmctx->vlan->state == BR_STATE_DISABLED)); 1182 } 1183 1184 static inline bool 1185 br_multicast_port_ctx_state_stopped(const struct net_bridge_mcast_port *pmctx) 1186 { 1187 return br_multicast_port_ctx_state_disabled(pmctx) || 1188 pmctx->port->state == BR_STATE_BLOCKING || 1189 (br_multicast_port_ctx_is_vlan(pmctx) && 1190 pmctx->vlan->state == BR_STATE_BLOCKING); 1191 } 1192 1193 static inline bool 1194 br_rports_have_mc_router(const struct net_bridge_mcast *brmctx) 1195 { 1196 #if IS_ENABLED(CONFIG_IPV6) 1197 return !hlist_empty(&brmctx->ip4_mc_router_list) || 1198 !hlist_empty(&brmctx->ip6_mc_router_list); 1199 #else 1200 return !hlist_empty(&brmctx->ip4_mc_router_list); 1201 #endif 1202 } 1203 1204 static inline bool 1205 br_multicast_ctx_options_equal(const struct net_bridge_mcast *brmctx1, 1206 const struct net_bridge_mcast *brmctx2) 1207 { 1208 return brmctx1->multicast_igmp_version == 1209 brmctx2->multicast_igmp_version && 1210 brmctx1->multicast_last_member_count == 1211 brmctx2->multicast_last_member_count && 1212 brmctx1->multicast_startup_query_count == 1213 brmctx2->multicast_startup_query_count && 1214 brmctx1->multicast_last_member_interval == 1215 brmctx2->multicast_last_member_interval && 1216 brmctx1->multicast_membership_interval == 1217 brmctx2->multicast_membership_interval && 1218 brmctx1->multicast_querier_interval == 1219 brmctx2->multicast_querier_interval && 1220 brmctx1->multicast_query_interval == 1221 brmctx2->multicast_query_interval && 1222 brmctx1->multicast_query_response_interval == 1223 brmctx2->multicast_query_response_interval && 1224 brmctx1->multicast_startup_query_interval == 1225 brmctx2->multicast_startup_query_interval && 1226 brmctx1->multicast_querier == brmctx2->multicast_querier && 1227 brmctx1->multicast_router == brmctx2->multicast_router && 1228 !br_rports_have_mc_router(brmctx1) && 1229 !br_rports_have_mc_router(brmctx2) && 1230 #if IS_ENABLED(CONFIG_IPV6) 1231 brmctx1->multicast_mld_version == 1232 brmctx2->multicast_mld_version && 1233 #endif 1234 true; 1235 } 1236 1237 static inline bool 1238 br_multicast_ctx_matches_vlan_snooping(const struct net_bridge_mcast *brmctx) 1239 { 1240 bool vlan_snooping_enabled; 1241 1242 vlan_snooping_enabled = !!br_opt_get(brmctx->br, 1243 BROPT_MCAST_VLAN_SNOOPING_ENABLED); 1244 1245 return !!(vlan_snooping_enabled == br_multicast_ctx_is_vlan(brmctx)); 1246 } 1247 #else 1248 static inline int br_multicast_rcv(struct net_bridge_mcast **brmctx, 1249 struct net_bridge_mcast_port **pmctx, 1250 struct net_bridge_vlan *vlan, 1251 struct sk_buff *skb, 1252 u16 vid) 1253 { 1254 return 0; 1255 } 1256 1257 static inline struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge_mcast *brmctx, 1258 struct sk_buff *skb, u16 vid) 1259 { 1260 return NULL; 1261 } 1262 1263 static inline int br_multicast_add_port(struct net_bridge_port *port) 1264 { 1265 return 0; 1266 } 1267 1268 static inline void br_multicast_del_port(struct net_bridge_port *port) 1269 { 1270 } 1271 1272 static inline void br_multicast_enable_port(struct net_bridge_port *port) 1273 { 1274 } 1275 1276 static inline void br_multicast_disable_port(struct net_bridge_port *port) 1277 { 1278 } 1279 1280 static inline void br_multicast_init(struct net_bridge *br) 1281 { 1282 } 1283 1284 static inline void br_multicast_join_snoopers(struct net_bridge *br) 1285 { 1286 } 1287 1288 static inline void br_multicast_leave_snoopers(struct net_bridge *br) 1289 { 1290 } 1291 1292 static inline void br_multicast_open(struct net_bridge *br) 1293 { 1294 } 1295 1296 static inline void br_multicast_stop(struct net_bridge *br) 1297 { 1298 } 1299 1300 static inline void br_multicast_dev_del(struct net_bridge *br) 1301 { 1302 } 1303 1304 static inline void br_multicast_flood(struct net_bridge_mdb_entry *mdst, 1305 struct sk_buff *skb, 1306 struct net_bridge_mcast *brmctx, 1307 bool local_rcv, bool local_orig) 1308 { 1309 } 1310 1311 static inline bool br_multicast_is_router(struct net_bridge_mcast *brmctx, 1312 struct sk_buff *skb) 1313 { 1314 return false; 1315 } 1316 1317 static inline bool br_multicast_querier_exists(struct net_bridge_mcast *brmctx, 1318 struct ethhdr *eth, 1319 const struct net_bridge_mdb_entry *mdb) 1320 { 1321 return false; 1322 } 1323 1324 static inline void br_mdb_init(void) 1325 { 1326 } 1327 1328 static inline void br_mdb_uninit(void) 1329 { 1330 } 1331 1332 static inline int br_mdb_hash_init(struct net_bridge *br) 1333 { 1334 return 0; 1335 } 1336 1337 static inline void br_mdb_hash_fini(struct net_bridge *br) 1338 { 1339 } 1340 1341 static inline void br_multicast_count(struct net_bridge *br, 1342 const struct net_bridge_port *p, 1343 const struct sk_buff *skb, 1344 u8 type, u8 dir) 1345 { 1346 } 1347 1348 static inline int br_multicast_init_stats(struct net_bridge *br) 1349 { 1350 return 0; 1351 } 1352 1353 static inline void br_multicast_uninit_stats(struct net_bridge *br) 1354 { 1355 } 1356 1357 static inline int br_multicast_igmp_type(const struct sk_buff *skb) 1358 { 1359 return 0; 1360 } 1361 1362 static inline void br_multicast_ctx_init(struct net_bridge *br, 1363 struct net_bridge_vlan *vlan, 1364 struct net_bridge_mcast *brmctx) 1365 { 1366 } 1367 1368 static inline void br_multicast_ctx_deinit(struct net_bridge_mcast *brmctx) 1369 { 1370 } 1371 1372 static inline void br_multicast_port_ctx_init(struct net_bridge_port *port, 1373 struct net_bridge_vlan *vlan, 1374 struct net_bridge_mcast_port *pmctx) 1375 { 1376 } 1377 1378 static inline void br_multicast_port_ctx_deinit(struct net_bridge_mcast_port *pmctx) 1379 { 1380 } 1381 1382 static inline void br_multicast_toggle_one_vlan(struct net_bridge_vlan *vlan, 1383 bool on) 1384 { 1385 } 1386 1387 static inline int br_multicast_toggle_vlan_snooping(struct net_bridge *br, 1388 bool on, 1389 struct netlink_ext_ack *extack) 1390 { 1391 return -EOPNOTSUPP; 1392 } 1393 1394 static inline bool br_multicast_toggle_global_vlan(struct net_bridge_vlan *vlan, 1395 bool on) 1396 { 1397 return false; 1398 } 1399 1400 static inline bool 1401 br_multicast_ctx_options_equal(const struct net_bridge_mcast *brmctx1, 1402 const struct net_bridge_mcast *brmctx2) 1403 { 1404 return true; 1405 } 1406 #endif 1407 1408 /* br_vlan.c */ 1409 #ifdef CONFIG_BRIDGE_VLAN_FILTERING 1410 bool br_allowed_ingress(const struct net_bridge *br, 1411 struct net_bridge_vlan_group *vg, struct sk_buff *skb, 1412 u16 *vid, u8 *state, 1413 struct net_bridge_vlan **vlan); 1414 bool br_allowed_egress(struct net_bridge_vlan_group *vg, 1415 const struct sk_buff *skb); 1416 bool br_should_learn(struct net_bridge_port *p, struct sk_buff *skb, u16 *vid); 1417 struct sk_buff *br_handle_vlan(struct net_bridge *br, 1418 const struct net_bridge_port *port, 1419 struct net_bridge_vlan_group *vg, 1420 struct sk_buff *skb); 1421 int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags, 1422 bool *changed, struct netlink_ext_ack *extack); 1423 int br_vlan_delete(struct net_bridge *br, u16 vid); 1424 void br_vlan_flush(struct net_bridge *br); 1425 struct net_bridge_vlan *br_vlan_find(struct net_bridge_vlan_group *vg, u16 vid); 1426 void br_recalculate_fwd_mask(struct net_bridge *br); 1427 int br_vlan_filter_toggle(struct net_bridge *br, unsigned long val, 1428 struct netlink_ext_ack *extack); 1429 int __br_vlan_set_proto(struct net_bridge *br, __be16 proto, 1430 struct netlink_ext_ack *extack); 1431 int br_vlan_set_proto(struct net_bridge *br, unsigned long val, 1432 struct netlink_ext_ack *extack); 1433 int br_vlan_set_stats(struct net_bridge *br, unsigned long val); 1434 int br_vlan_set_stats_per_port(struct net_bridge *br, unsigned long val); 1435 int br_vlan_init(struct net_bridge *br); 1436 int br_vlan_set_default_pvid(struct net_bridge *br, unsigned long val, 1437 struct netlink_ext_ack *extack); 1438 int __br_vlan_set_default_pvid(struct net_bridge *br, u16 pvid, 1439 struct netlink_ext_ack *extack); 1440 int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags, 1441 bool *changed, struct netlink_ext_ack *extack); 1442 int nbp_vlan_delete(struct net_bridge_port *port, u16 vid); 1443 void nbp_vlan_flush(struct net_bridge_port *port); 1444 int nbp_vlan_init(struct net_bridge_port *port, struct netlink_ext_ack *extack); 1445 int nbp_get_num_vlan_infos(struct net_bridge_port *p, u32 filter_mask); 1446 void br_vlan_get_stats(const struct net_bridge_vlan *v, 1447 struct pcpu_sw_netstats *stats); 1448 void br_vlan_port_event(struct net_bridge_port *p, unsigned long event); 1449 int br_vlan_bridge_event(struct net_device *dev, unsigned long event, 1450 void *ptr); 1451 void br_vlan_rtnl_init(void); 1452 void br_vlan_rtnl_uninit(void); 1453 void br_vlan_notify(const struct net_bridge *br, 1454 const struct net_bridge_port *p, 1455 u16 vid, u16 vid_range, 1456 int cmd); 1457 bool br_vlan_can_enter_range(const struct net_bridge_vlan *v_curr, 1458 const struct net_bridge_vlan *range_end); 1459 1460 void br_vlan_fill_forward_path_pvid(struct net_bridge *br, 1461 struct net_device_path_ctx *ctx, 1462 struct net_device_path *path); 1463 int br_vlan_fill_forward_path_mode(struct net_bridge *br, 1464 struct net_bridge_port *dst, 1465 struct net_device_path *path); 1466 1467 static inline struct net_bridge_vlan_group *br_vlan_group( 1468 const struct net_bridge *br) 1469 { 1470 return rtnl_dereference(br->vlgrp); 1471 } 1472 1473 static inline struct net_bridge_vlan_group *nbp_vlan_group( 1474 const struct net_bridge_port *p) 1475 { 1476 return rtnl_dereference(p->vlgrp); 1477 } 1478 1479 static inline struct net_bridge_vlan_group *br_vlan_group_rcu( 1480 const struct net_bridge *br) 1481 { 1482 return rcu_dereference(br->vlgrp); 1483 } 1484 1485 static inline struct net_bridge_vlan_group *nbp_vlan_group_rcu( 1486 const struct net_bridge_port *p) 1487 { 1488 return rcu_dereference(p->vlgrp); 1489 } 1490 1491 /* Since bridge now depends on 8021Q module, but the time bridge sees the 1492 * skb, the vlan tag will always be present if the frame was tagged. 1493 */ 1494 static inline int br_vlan_get_tag(const struct sk_buff *skb, u16 *vid) 1495 { 1496 int err = 0; 1497 1498 if (skb_vlan_tag_present(skb)) { 1499 *vid = skb_vlan_tag_get_id(skb); 1500 } else { 1501 *vid = 0; 1502 err = -EINVAL; 1503 } 1504 1505 return err; 1506 } 1507 1508 static inline u16 br_get_pvid(const struct net_bridge_vlan_group *vg) 1509 { 1510 if (!vg) 1511 return 0; 1512 1513 smp_rmb(); 1514 return vg->pvid; 1515 } 1516 1517 static inline u16 br_vlan_flags(const struct net_bridge_vlan *v, u16 pvid) 1518 { 1519 return v->vid == pvid ? v->flags | BRIDGE_VLAN_INFO_PVID : v->flags; 1520 } 1521 #else 1522 static inline bool br_allowed_ingress(const struct net_bridge *br, 1523 struct net_bridge_vlan_group *vg, 1524 struct sk_buff *skb, 1525 u16 *vid, u8 *state, 1526 struct net_bridge_vlan **vlan) 1527 1528 { 1529 *vlan = NULL; 1530 return true; 1531 } 1532 1533 static inline bool br_allowed_egress(struct net_bridge_vlan_group *vg, 1534 const struct sk_buff *skb) 1535 { 1536 return true; 1537 } 1538 1539 static inline bool br_should_learn(struct net_bridge_port *p, 1540 struct sk_buff *skb, u16 *vid) 1541 { 1542 return true; 1543 } 1544 1545 static inline struct sk_buff *br_handle_vlan(struct net_bridge *br, 1546 const struct net_bridge_port *port, 1547 struct net_bridge_vlan_group *vg, 1548 struct sk_buff *skb) 1549 { 1550 return skb; 1551 } 1552 1553 static inline int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags, 1554 bool *changed, struct netlink_ext_ack *extack) 1555 { 1556 *changed = false; 1557 return -EOPNOTSUPP; 1558 } 1559 1560 static inline int br_vlan_delete(struct net_bridge *br, u16 vid) 1561 { 1562 return -EOPNOTSUPP; 1563 } 1564 1565 static inline void br_vlan_flush(struct net_bridge *br) 1566 { 1567 } 1568 1569 static inline void br_recalculate_fwd_mask(struct net_bridge *br) 1570 { 1571 } 1572 1573 static inline int br_vlan_init(struct net_bridge *br) 1574 { 1575 return 0; 1576 } 1577 1578 static inline int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags, 1579 bool *changed, struct netlink_ext_ack *extack) 1580 { 1581 *changed = false; 1582 return -EOPNOTSUPP; 1583 } 1584 1585 static inline int nbp_vlan_delete(struct net_bridge_port *port, u16 vid) 1586 { 1587 return -EOPNOTSUPP; 1588 } 1589 1590 static inline void nbp_vlan_flush(struct net_bridge_port *port) 1591 { 1592 } 1593 1594 static inline struct net_bridge_vlan *br_vlan_find(struct net_bridge_vlan_group *vg, 1595 u16 vid) 1596 { 1597 return NULL; 1598 } 1599 1600 static inline int nbp_vlan_init(struct net_bridge_port *port, 1601 struct netlink_ext_ack *extack) 1602 { 1603 return 0; 1604 } 1605 1606 static inline u16 br_vlan_get_tag(const struct sk_buff *skb, u16 *tag) 1607 { 1608 return 0; 1609 } 1610 1611 static inline u16 br_get_pvid(const struct net_bridge_vlan_group *vg) 1612 { 1613 return 0; 1614 } 1615 1616 static inline int br_vlan_filter_toggle(struct net_bridge *br, 1617 unsigned long val, 1618 struct netlink_ext_ack *extack) 1619 { 1620 return -EOPNOTSUPP; 1621 } 1622 1623 static inline int nbp_get_num_vlan_infos(struct net_bridge_port *p, 1624 u32 filter_mask) 1625 { 1626 return 0; 1627 } 1628 1629 static inline void br_vlan_fill_forward_path_pvid(struct net_bridge *br, 1630 struct net_device_path_ctx *ctx, 1631 struct net_device_path *path) 1632 { 1633 } 1634 1635 static inline int br_vlan_fill_forward_path_mode(struct net_bridge *br, 1636 struct net_bridge_port *dst, 1637 struct net_device_path *path) 1638 { 1639 return 0; 1640 } 1641 1642 static inline struct net_bridge_vlan_group *br_vlan_group( 1643 const struct net_bridge *br) 1644 { 1645 return NULL; 1646 } 1647 1648 static inline struct net_bridge_vlan_group *nbp_vlan_group( 1649 const struct net_bridge_port *p) 1650 { 1651 return NULL; 1652 } 1653 1654 static inline struct net_bridge_vlan_group *br_vlan_group_rcu( 1655 const struct net_bridge *br) 1656 { 1657 return NULL; 1658 } 1659 1660 static inline struct net_bridge_vlan_group *nbp_vlan_group_rcu( 1661 const struct net_bridge_port *p) 1662 { 1663 return NULL; 1664 } 1665 1666 static inline void br_vlan_get_stats(const struct net_bridge_vlan *v, 1667 struct pcpu_sw_netstats *stats) 1668 { 1669 } 1670 1671 static inline void br_vlan_port_event(struct net_bridge_port *p, 1672 unsigned long event) 1673 { 1674 } 1675 1676 static inline int br_vlan_bridge_event(struct net_device *dev, 1677 unsigned long event, void *ptr) 1678 { 1679 return 0; 1680 } 1681 1682 static inline void br_vlan_rtnl_init(void) 1683 { 1684 } 1685 1686 static inline void br_vlan_rtnl_uninit(void) 1687 { 1688 } 1689 1690 static inline void br_vlan_notify(const struct net_bridge *br, 1691 const struct net_bridge_port *p, 1692 u16 vid, u16 vid_range, 1693 int cmd) 1694 { 1695 } 1696 1697 static inline bool br_vlan_can_enter_range(const struct net_bridge_vlan *v_curr, 1698 const struct net_bridge_vlan *range_end) 1699 { 1700 return true; 1701 } 1702 1703 static inline u16 br_vlan_flags(const struct net_bridge_vlan *v, u16 pvid) 1704 { 1705 return 0; 1706 } 1707 1708 #endif 1709 1710 /* br_vlan_options.c */ 1711 #ifdef CONFIG_BRIDGE_VLAN_FILTERING 1712 bool br_vlan_opts_eq_range(const struct net_bridge_vlan *v_curr, 1713 const struct net_bridge_vlan *range_end); 1714 bool br_vlan_opts_fill(struct sk_buff *skb, const struct net_bridge_vlan *v); 1715 size_t br_vlan_opts_nl_size(void); 1716 int br_vlan_process_options(const struct net_bridge *br, 1717 const struct net_bridge_port *p, 1718 struct net_bridge_vlan *range_start, 1719 struct net_bridge_vlan *range_end, 1720 struct nlattr **tb, 1721 struct netlink_ext_ack *extack); 1722 int br_vlan_rtm_process_global_options(struct net_device *dev, 1723 const struct nlattr *attr, 1724 int cmd, 1725 struct netlink_ext_ack *extack); 1726 bool br_vlan_global_opts_can_enter_range(const struct net_bridge_vlan *v_curr, 1727 const struct net_bridge_vlan *r_end); 1728 bool br_vlan_global_opts_fill(struct sk_buff *skb, u16 vid, u16 vid_range, 1729 const struct net_bridge_vlan *v_opts); 1730 1731 /* vlan state manipulation helpers using *_ONCE to annotate lock-free access */ 1732 static inline u8 br_vlan_get_state(const struct net_bridge_vlan *v) 1733 { 1734 return READ_ONCE(v->state); 1735 } 1736 1737 static inline void br_vlan_set_state(struct net_bridge_vlan *v, u8 state) 1738 { 1739 WRITE_ONCE(v->state, state); 1740 } 1741 1742 static inline u8 br_vlan_get_pvid_state(const struct net_bridge_vlan_group *vg) 1743 { 1744 return READ_ONCE(vg->pvid_state); 1745 } 1746 1747 static inline void br_vlan_set_pvid_state(struct net_bridge_vlan_group *vg, 1748 u8 state) 1749 { 1750 WRITE_ONCE(vg->pvid_state, state); 1751 } 1752 1753 /* learn_allow is true at ingress and false at egress */ 1754 static inline bool br_vlan_state_allowed(u8 state, bool learn_allow) 1755 { 1756 switch (state) { 1757 case BR_STATE_LEARNING: 1758 return learn_allow; 1759 case BR_STATE_FORWARDING: 1760 return true; 1761 default: 1762 return false; 1763 } 1764 } 1765 #endif 1766 1767 struct nf_br_ops { 1768 int (*br_dev_xmit_hook)(struct sk_buff *skb); 1769 }; 1770 extern const struct nf_br_ops __rcu *nf_br_ops; 1771 1772 /* br_netfilter.c */ 1773 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER) 1774 int br_nf_core_init(void); 1775 void br_nf_core_fini(void); 1776 void br_netfilter_rtable_init(struct net_bridge *); 1777 #else 1778 static inline int br_nf_core_init(void) { return 0; } 1779 static inline void br_nf_core_fini(void) {} 1780 #define br_netfilter_rtable_init(x) 1781 #endif 1782 1783 /* br_stp.c */ 1784 void br_set_state(struct net_bridge_port *p, unsigned int state); 1785 struct net_bridge_port *br_get_port(struct net_bridge *br, u16 port_no); 1786 void br_init_port(struct net_bridge_port *p); 1787 void br_become_designated_port(struct net_bridge_port *p); 1788 1789 void __br_set_forward_delay(struct net_bridge *br, unsigned long t); 1790 int br_set_forward_delay(struct net_bridge *br, unsigned long x); 1791 int br_set_hello_time(struct net_bridge *br, unsigned long x); 1792 int br_set_max_age(struct net_bridge *br, unsigned long x); 1793 int __set_ageing_time(struct net_device *dev, unsigned long t); 1794 int br_set_ageing_time(struct net_bridge *br, clock_t ageing_time); 1795 1796 1797 /* br_stp_if.c */ 1798 void br_stp_enable_bridge(struct net_bridge *br); 1799 void br_stp_disable_bridge(struct net_bridge *br); 1800 int br_stp_set_enabled(struct net_bridge *br, unsigned long val, 1801 struct netlink_ext_ack *extack); 1802 void br_stp_enable_port(struct net_bridge_port *p); 1803 void br_stp_disable_port(struct net_bridge_port *p); 1804 bool br_stp_recalculate_bridge_id(struct net_bridge *br); 1805 void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *a); 1806 void br_stp_set_bridge_priority(struct net_bridge *br, u16 newprio); 1807 int br_stp_set_port_priority(struct net_bridge_port *p, unsigned long newprio); 1808 int br_stp_set_path_cost(struct net_bridge_port *p, unsigned long path_cost); 1809 ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id); 1810 1811 /* br_stp_bpdu.c */ 1812 struct stp_proto; 1813 void br_stp_rcv(const struct stp_proto *proto, struct sk_buff *skb, 1814 struct net_device *dev); 1815 1816 /* br_stp_timer.c */ 1817 void br_stp_timer_init(struct net_bridge *br); 1818 void br_stp_port_timer_init(struct net_bridge_port *p); 1819 unsigned long br_timer_value(const struct timer_list *timer); 1820 1821 /* br.c */ 1822 #if IS_ENABLED(CONFIG_ATM_LANE) 1823 extern int (*br_fdb_test_addr_hook)(struct net_device *dev, unsigned char *addr); 1824 #endif 1825 1826 /* br_mrp.c */ 1827 #if IS_ENABLED(CONFIG_BRIDGE_MRP) 1828 int br_mrp_parse(struct net_bridge *br, struct net_bridge_port *p, 1829 struct nlattr *attr, int cmd, struct netlink_ext_ack *extack); 1830 bool br_mrp_enabled(struct net_bridge *br); 1831 void br_mrp_port_del(struct net_bridge *br, struct net_bridge_port *p); 1832 int br_mrp_fill_info(struct sk_buff *skb, struct net_bridge *br); 1833 #else 1834 static inline int br_mrp_parse(struct net_bridge *br, struct net_bridge_port *p, 1835 struct nlattr *attr, int cmd, 1836 struct netlink_ext_ack *extack) 1837 { 1838 return -EOPNOTSUPP; 1839 } 1840 1841 static inline bool br_mrp_enabled(struct net_bridge *br) 1842 { 1843 return false; 1844 } 1845 1846 static inline void br_mrp_port_del(struct net_bridge *br, 1847 struct net_bridge_port *p) 1848 { 1849 } 1850 1851 static inline int br_mrp_fill_info(struct sk_buff *skb, struct net_bridge *br) 1852 { 1853 return 0; 1854 } 1855 1856 #endif 1857 1858 /* br_cfm.c */ 1859 #if IS_ENABLED(CONFIG_BRIDGE_CFM) 1860 int br_cfm_parse(struct net_bridge *br, struct net_bridge_port *p, 1861 struct nlattr *attr, int cmd, struct netlink_ext_ack *extack); 1862 bool br_cfm_created(struct net_bridge *br); 1863 void br_cfm_port_del(struct net_bridge *br, struct net_bridge_port *p); 1864 int br_cfm_config_fill_info(struct sk_buff *skb, struct net_bridge *br); 1865 int br_cfm_status_fill_info(struct sk_buff *skb, 1866 struct net_bridge *br, 1867 bool getlink); 1868 int br_cfm_mep_count(struct net_bridge *br, u32 *count); 1869 int br_cfm_peer_mep_count(struct net_bridge *br, u32 *count); 1870 #else 1871 static inline int br_cfm_parse(struct net_bridge *br, struct net_bridge_port *p, 1872 struct nlattr *attr, int cmd, 1873 struct netlink_ext_ack *extack) 1874 { 1875 return -EOPNOTSUPP; 1876 } 1877 1878 static inline bool br_cfm_created(struct net_bridge *br) 1879 { 1880 return false; 1881 } 1882 1883 static inline void br_cfm_port_del(struct net_bridge *br, 1884 struct net_bridge_port *p) 1885 { 1886 } 1887 1888 static inline int br_cfm_config_fill_info(struct sk_buff *skb, struct net_bridge *br) 1889 { 1890 return -EOPNOTSUPP; 1891 } 1892 1893 static inline int br_cfm_status_fill_info(struct sk_buff *skb, 1894 struct net_bridge *br, 1895 bool getlink) 1896 { 1897 return -EOPNOTSUPP; 1898 } 1899 1900 static inline int br_cfm_mep_count(struct net_bridge *br, u32 *count) 1901 { 1902 *count = 0; 1903 return -EOPNOTSUPP; 1904 } 1905 1906 static inline int br_cfm_peer_mep_count(struct net_bridge *br, u32 *count) 1907 { 1908 *count = 0; 1909 return -EOPNOTSUPP; 1910 } 1911 #endif 1912 1913 /* br_netlink.c */ 1914 extern struct rtnl_link_ops br_link_ops; 1915 int br_netlink_init(void); 1916 void br_netlink_fini(void); 1917 void br_ifinfo_notify(int event, const struct net_bridge *br, 1918 const struct net_bridge_port *port); 1919 void br_info_notify(int event, const struct net_bridge *br, 1920 const struct net_bridge_port *port, u32 filter); 1921 int br_setlink(struct net_device *dev, struct nlmsghdr *nlmsg, u16 flags, 1922 struct netlink_ext_ack *extack); 1923 int br_dellink(struct net_device *dev, struct nlmsghdr *nlmsg, u16 flags); 1924 int br_getlink(struct sk_buff *skb, u32 pid, u32 seq, struct net_device *dev, 1925 u32 filter_mask, int nlflags); 1926 int br_process_vlan_info(struct net_bridge *br, 1927 struct net_bridge_port *p, int cmd, 1928 struct bridge_vlan_info *vinfo_curr, 1929 struct bridge_vlan_info **vinfo_last, 1930 bool *changed, 1931 struct netlink_ext_ack *extack); 1932 1933 #ifdef CONFIG_SYSFS 1934 /* br_sysfs_if.c */ 1935 extern const struct sysfs_ops brport_sysfs_ops; 1936 int br_sysfs_addif(struct net_bridge_port *p); 1937 int br_sysfs_renameif(struct net_bridge_port *p); 1938 1939 /* br_sysfs_br.c */ 1940 int br_sysfs_addbr(struct net_device *dev); 1941 void br_sysfs_delbr(struct net_device *dev); 1942 1943 #else 1944 1945 static inline int br_sysfs_addif(struct net_bridge_port *p) { return 0; } 1946 static inline int br_sysfs_renameif(struct net_bridge_port *p) { return 0; } 1947 static inline int br_sysfs_addbr(struct net_device *dev) { return 0; } 1948 static inline void br_sysfs_delbr(struct net_device *dev) { return; } 1949 #endif /* CONFIG_SYSFS */ 1950 1951 /* br_switchdev.c */ 1952 #ifdef CONFIG_NET_SWITCHDEV 1953 int br_switchdev_port_offload(struct net_bridge_port *p, 1954 struct net_device *dev, const void *ctx, 1955 struct notifier_block *atomic_nb, 1956 struct notifier_block *blocking_nb, 1957 bool tx_fwd_offload, 1958 struct netlink_ext_ack *extack); 1959 1960 void br_switchdev_port_unoffload(struct net_bridge_port *p, const void *ctx, 1961 struct notifier_block *atomic_nb, 1962 struct notifier_block *blocking_nb); 1963 1964 bool br_switchdev_frame_uses_tx_fwd_offload(struct sk_buff *skb); 1965 1966 void br_switchdev_frame_set_offload_fwd_mark(struct sk_buff *skb); 1967 1968 void nbp_switchdev_frame_mark_tx_fwd_offload(const struct net_bridge_port *p, 1969 struct sk_buff *skb); 1970 void nbp_switchdev_frame_mark_tx_fwd_to_hwdom(const struct net_bridge_port *p, 1971 struct sk_buff *skb); 1972 void nbp_switchdev_frame_mark(const struct net_bridge_port *p, 1973 struct sk_buff *skb); 1974 bool nbp_switchdev_allowed_egress(const struct net_bridge_port *p, 1975 const struct sk_buff *skb); 1976 int br_switchdev_set_port_flag(struct net_bridge_port *p, 1977 unsigned long flags, 1978 unsigned long mask, 1979 struct netlink_ext_ack *extack); 1980 void br_switchdev_fdb_notify(struct net_bridge *br, 1981 const struct net_bridge_fdb_entry *fdb, int type); 1982 void br_switchdev_mdb_notify(struct net_device *dev, 1983 struct net_bridge_mdb_entry *mp, 1984 struct net_bridge_port_group *pg, 1985 int type); 1986 int br_switchdev_port_vlan_add(struct net_device *dev, u16 vid, u16 flags, 1987 struct netlink_ext_ack *extack); 1988 int br_switchdev_port_vlan_del(struct net_device *dev, u16 vid); 1989 void br_switchdev_init(struct net_bridge *br); 1990 1991 static inline void br_switchdev_frame_unmark(struct sk_buff *skb) 1992 { 1993 skb->offload_fwd_mark = 0; 1994 } 1995 #else 1996 static inline int 1997 br_switchdev_port_offload(struct net_bridge_port *p, 1998 struct net_device *dev, const void *ctx, 1999 struct notifier_block *atomic_nb, 2000 struct notifier_block *blocking_nb, 2001 bool tx_fwd_offload, 2002 struct netlink_ext_ack *extack) 2003 { 2004 return -EOPNOTSUPP; 2005 } 2006 2007 static inline void 2008 br_switchdev_port_unoffload(struct net_bridge_port *p, const void *ctx, 2009 struct notifier_block *atomic_nb, 2010 struct notifier_block *blocking_nb) 2011 { 2012 } 2013 2014 static inline bool br_switchdev_frame_uses_tx_fwd_offload(struct sk_buff *skb) 2015 { 2016 return false; 2017 } 2018 2019 static inline void br_switchdev_frame_set_offload_fwd_mark(struct sk_buff *skb) 2020 { 2021 } 2022 2023 static inline void 2024 nbp_switchdev_frame_mark_tx_fwd_offload(const struct net_bridge_port *p, 2025 struct sk_buff *skb) 2026 { 2027 } 2028 2029 static inline void 2030 nbp_switchdev_frame_mark_tx_fwd_to_hwdom(const struct net_bridge_port *p, 2031 struct sk_buff *skb) 2032 { 2033 } 2034 2035 static inline void nbp_switchdev_frame_mark(const struct net_bridge_port *p, 2036 struct sk_buff *skb) 2037 { 2038 } 2039 2040 static inline bool nbp_switchdev_allowed_egress(const struct net_bridge_port *p, 2041 const struct sk_buff *skb) 2042 { 2043 return true; 2044 } 2045 2046 static inline int br_switchdev_set_port_flag(struct net_bridge_port *p, 2047 unsigned long flags, 2048 unsigned long mask, 2049 struct netlink_ext_ack *extack) 2050 { 2051 return 0; 2052 } 2053 2054 static inline int br_switchdev_port_vlan_add(struct net_device *dev, 2055 u16 vid, u16 flags, 2056 struct netlink_ext_ack *extack) 2057 { 2058 return -EOPNOTSUPP; 2059 } 2060 2061 static inline int br_switchdev_port_vlan_del(struct net_device *dev, u16 vid) 2062 { 2063 return -EOPNOTSUPP; 2064 } 2065 2066 static inline void 2067 br_switchdev_fdb_notify(struct net_bridge *br, 2068 const struct net_bridge_fdb_entry *fdb, int type) 2069 { 2070 } 2071 2072 static inline void br_switchdev_mdb_notify(struct net_device *dev, 2073 struct net_bridge_mdb_entry *mp, 2074 struct net_bridge_port_group *pg, 2075 int type) 2076 { 2077 } 2078 2079 static inline void br_switchdev_frame_unmark(struct sk_buff *skb) 2080 { 2081 } 2082 2083 static inline void br_switchdev_init(struct net_bridge *br) 2084 { 2085 } 2086 2087 #endif /* CONFIG_NET_SWITCHDEV */ 2088 2089 /* br_arp_nd_proxy.c */ 2090 void br_recalculate_neigh_suppress_enabled(struct net_bridge *br); 2091 void br_do_proxy_suppress_arp(struct sk_buff *skb, struct net_bridge *br, 2092 u16 vid, struct net_bridge_port *p); 2093 void br_do_suppress_nd(struct sk_buff *skb, struct net_bridge *br, 2094 u16 vid, struct net_bridge_port *p, struct nd_msg *msg); 2095 struct nd_msg *br_is_nd_neigh_msg(struct sk_buff *skb, struct nd_msg *m); 2096 #endif 2097