| 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 2 | /* Copyright (C) 2007-2019 B.A.T.M.A.N. contributors: |
| 3 | * |
| 4 | * Marek Lindner, Simon Wunderlich |
| 5 | */ |
| 6 | |
| 7 | #ifndef _NET_BATMAN_ADV_TYPES_H_ |
| 8 | #define _NET_BATMAN_ADV_TYPES_H_ |
| 9 | |
| 10 | #ifndef _NET_BATMAN_ADV_MAIN_H_ |
| 11 | #error only "main.h" can be included directly |
| 12 | #endif |
| 13 | |
| 14 | #include <linux/average.h> |
| 15 | #include <linux/bitops.h> |
| 16 | #include <linux/compiler.h> |
| 17 | #include <linux/if_ether.h> |
| 18 | #include <linux/kref.h> |
| 19 | #include <linux/netdevice.h> |
| 20 | #include <linux/netlink.h> |
| 21 | #include <linux/sched.h> /* for linux/wait.h */ |
| 22 | #include <linux/spinlock.h> |
| 23 | #include <linux/types.h> |
| 24 | #include <linux/wait.h> |
| 25 | #include <linux/workqueue.h> |
| 26 | #include <uapi/linux/batadv_packet.h> |
| 27 | #include <uapi/linux/batman_adv.h> |
| 28 | |
| 29 | struct seq_file; |
| 30 | |
| 31 | #ifdef CONFIG_BATMAN_ADV_DAT |
| 32 | |
| 33 | /** |
| 34 | * typedef batadv_dat_addr_t - type used for all DHT addresses |
| 35 | * |
| 36 | * If it is changed, BATADV_DAT_ADDR_MAX is changed as well. |
| 37 | * |
| 38 | * *Please be careful: batadv_dat_addr_t must be UNSIGNED* |
| 39 | */ |
| 40 | typedef u16 batadv_dat_addr_t; |
| 41 | |
| 42 | #endif /* CONFIG_BATMAN_ADV_DAT */ |
| 43 | |
| 44 | /** |
| 45 | * enum batadv_dhcp_recipient - dhcp destination |
| 46 | */ |
| 47 | enum batadv_dhcp_recipient { |
| 48 | /** @BATADV_DHCP_NO: packet is not a dhcp message */ |
| 49 | BATADV_DHCP_NO = 0, |
| 50 | |
| 51 | /** @BATADV_DHCP_TO_SERVER: dhcp message is directed to a server */ |
| 52 | BATADV_DHCP_TO_SERVER, |
| 53 | |
| 54 | /** @BATADV_DHCP_TO_CLIENT: dhcp message is directed to a client */ |
| 55 | BATADV_DHCP_TO_CLIENT, |
| 56 | }; |
| 57 | |
| 58 | /** |
| 59 | * BATADV_TT_REMOTE_MASK - bitmask selecting the flags that are sent over the |
| 60 | * wire only |
| 61 | */ |
| 62 | #define BATADV_TT_REMOTE_MASK 0x00FF |
| 63 | |
| 64 | /** |
| 65 | * BATADV_TT_SYNC_MASK - bitmask of the flags that need to be kept in sync |
| 66 | * among the nodes. These flags are used to compute the global/local CRC |
| 67 | */ |
| 68 | #define BATADV_TT_SYNC_MASK 0x00F0 |
| 69 | |
| 70 | /** |
| 71 | * struct batadv_hard_iface_bat_iv - per hard-interface B.A.T.M.A.N. IV data |
| 72 | */ |
| 73 | struct batadv_hard_iface_bat_iv { |
| 74 | /** @ogm_buff: buffer holding the OGM packet */ |
| 75 | unsigned char *ogm_buff; |
| 76 | |
| 77 | /** @ogm_buff_len: length of the OGM packet buffer */ |
| 78 | int ogm_buff_len; |
| 79 | |
| 80 | /** @ogm_seqno: OGM sequence number - used to identify each OGM */ |
| 81 | atomic_t ogm_seqno; |
| 82 | }; |
| 83 | |
| 84 | /** |
| 85 | * enum batadv_v_hard_iface_flags - interface flags useful to B.A.T.M.A.N. V |
| 86 | */ |
| 87 | enum batadv_v_hard_iface_flags { |
| 88 | /** |
| 89 | * @BATADV_FULL_DUPLEX: tells if the connection over this link is |
| 90 | * full-duplex |
| 91 | */ |
| 92 | BATADV_FULL_DUPLEX = BIT(0), |
| 93 | |
| 94 | /** |
| 95 | * @BATADV_WARNING_DEFAULT: tells whether we have warned the user that |
| 96 | * no throughput data is available for this interface and that default |
| 97 | * values are assumed. |
| 98 | */ |
| 99 | BATADV_WARNING_DEFAULT = BIT(1), |
| 100 | }; |
| 101 | |
| 102 | /** |
| 103 | * struct batadv_hard_iface_bat_v - per hard-interface B.A.T.M.A.N. V data |
| 104 | */ |
| 105 | struct batadv_hard_iface_bat_v { |
| 106 | /** @elp_interval: time interval between two ELP transmissions */ |
| 107 | atomic_t elp_interval; |
| 108 | |
| 109 | /** @elp_seqno: current ELP sequence number */ |
| 110 | atomic_t elp_seqno; |
| 111 | |
| 112 | /** @elp_skb: base skb containing the ELP message to send */ |
| 113 | struct sk_buff *elp_skb; |
| 114 | |
| 115 | /** @elp_wq: workqueue used to schedule ELP transmissions */ |
| 116 | struct delayed_work elp_wq; |
| 117 | |
| 118 | /** |
| 119 | * @throughput_override: throughput override to disable link |
| 120 | * auto-detection |
| 121 | */ |
| 122 | atomic_t throughput_override; |
| 123 | |
| 124 | /** @flags: interface specific flags */ |
| 125 | u8 flags; |
| 126 | }; |
| 127 | |
| 128 | /** |
| 129 | * enum batadv_hard_iface_wifi_flags - Flags describing the wifi configuration |
| 130 | * of a batadv_hard_iface |
| 131 | */ |
| 132 | enum batadv_hard_iface_wifi_flags { |
| 133 | /** @BATADV_HARDIF_WIFI_WEXT_DIRECT: it is a wext wifi device */ |
| 134 | BATADV_HARDIF_WIFI_WEXT_DIRECT = BIT(0), |
| 135 | |
| 136 | /** @BATADV_HARDIF_WIFI_CFG80211_DIRECT: it is a cfg80211 wifi device */ |
| 137 | BATADV_HARDIF_WIFI_CFG80211_DIRECT = BIT(1), |
| 138 | |
| 139 | /** |
| 140 | * @BATADV_HARDIF_WIFI_WEXT_INDIRECT: link device is a wext wifi device |
| 141 | */ |
| 142 | BATADV_HARDIF_WIFI_WEXT_INDIRECT = BIT(2), |
| 143 | |
| 144 | /** |
| 145 | * @BATADV_HARDIF_WIFI_CFG80211_INDIRECT: link device is a cfg80211 wifi |
| 146 | * device |
| 147 | */ |
| 148 | BATADV_HARDIF_WIFI_CFG80211_INDIRECT = BIT(3), |
| 149 | }; |
| 150 | |
| 151 | /** |
| 152 | * struct batadv_hard_iface - network device known to batman-adv |
| 153 | */ |
| 154 | struct batadv_hard_iface { |
| 155 | /** @list: list node for batadv_hardif_list */ |
| 156 | struct list_head list; |
| 157 | |
| 158 | /** @if_status: status of the interface for batman-adv */ |
| 159 | char if_status; |
| 160 | |
| 161 | /** |
| 162 | * @num_bcasts: number of payload re-broadcasts on this interface (ARQ) |
| 163 | */ |
| 164 | u8 num_bcasts; |
| 165 | |
| 166 | /** |
| 167 | * @wifi_flags: flags whether this is (directly or indirectly) a wifi |
| 168 | * interface |
| 169 | */ |
| 170 | u32 wifi_flags; |
| 171 | |
| 172 | /** @net_dev: pointer to the net_device */ |
| 173 | struct net_device *net_dev; |
| 174 | |
| 175 | /** @hardif_obj: kobject of the per interface sysfs "mesh" directory */ |
| 176 | struct kobject *hardif_obj; |
| 177 | |
| 178 | /** @refcount: number of contexts the object is used */ |
| 179 | struct kref refcount; |
| 180 | |
| 181 | /** |
| 182 | * @batman_adv_ptype: packet type describing packets that should be |
| 183 | * processed by batman-adv for this interface |
| 184 | */ |
| 185 | struct packet_type batman_adv_ptype; |
| 186 | |
| 187 | /** |
| 188 | * @soft_iface: the batman-adv interface which uses this network |
| 189 | * interface |
| 190 | */ |
| 191 | struct net_device *soft_iface; |
| 192 | |
| 193 | /** @rcu: struct used for freeing in an RCU-safe manner */ |
| 194 | struct rcu_head rcu; |
| 195 | |
| 196 | /** @bat_iv: per hard-interface B.A.T.M.A.N. IV data */ |
| 197 | struct batadv_hard_iface_bat_iv bat_iv; |
| 198 | |
| 199 | #ifdef CONFIG_BATMAN_ADV_BATMAN_V |
| 200 | /** @bat_v: per hard-interface B.A.T.M.A.N. V data */ |
| 201 | struct batadv_hard_iface_bat_v bat_v; |
| 202 | #endif |
| 203 | |
| 204 | #ifdef CONFIG_BATMAN_ADV_DEBUGFS |
| 205 | /** |
| 206 | * @debug_dir: dentry for nc subdir in batman-adv directory in debugfs |
| 207 | */ |
| 208 | struct dentry *debug_dir; |
| 209 | #endif |
| 210 | |
| 211 | /** |
| 212 | * @neigh_list: list of unique single hop neighbors via this interface |
| 213 | */ |
| 214 | struct hlist_head neigh_list; |
| 215 | |
| 216 | /** @neigh_list_lock: lock protecting neigh_list */ |
| 217 | spinlock_t neigh_list_lock; |
| 218 | }; |
| 219 | |
| 220 | /** |
| 221 | * struct batadv_orig_ifinfo - B.A.T.M.A.N. IV private orig_ifinfo members |
| 222 | */ |
| 223 | struct batadv_orig_ifinfo_bat_iv { |
| 224 | /** |
| 225 | * @bcast_own: bitfield which counts the number of our OGMs this |
| 226 | * orig_node rebroadcasted "back" to us (relative to last_real_seqno) |
| 227 | */ |
| 228 | DECLARE_BITMAP(bcast_own, BATADV_TQ_LOCAL_WINDOW_SIZE); |
| 229 | |
| 230 | /** @bcast_own_sum: sum of bcast_own */ |
| 231 | u8 bcast_own_sum; |
| 232 | }; |
| 233 | |
| 234 | /** |
| 235 | * struct batadv_orig_ifinfo - originator info per outgoing interface |
| 236 | */ |
| 237 | struct batadv_orig_ifinfo { |
| 238 | /** @list: list node for &batadv_orig_node.ifinfo_list */ |
| 239 | struct hlist_node list; |
| 240 | |
| 241 | /** @if_outgoing: pointer to outgoing hard-interface */ |
| 242 | struct batadv_hard_iface *if_outgoing; |
| 243 | |
| 244 | /** @router: router that should be used to reach this originator */ |
| 245 | struct batadv_neigh_node __rcu *router; |
| 246 | |
| 247 | /** @last_real_seqno: last and best known sequence number */ |
| 248 | u32 last_real_seqno; |
| 249 | |
| 250 | /** @last_ttl: ttl of last received packet */ |
| 251 | u8 last_ttl; |
| 252 | |
| 253 | /** @last_seqno_forwarded: seqno of the OGM which was forwarded last */ |
| 254 | u32 last_seqno_forwarded; |
| 255 | |
| 256 | /** @batman_seqno_reset: time when the batman seqno window was reset */ |
| 257 | unsigned long batman_seqno_reset; |
| 258 | |
| 259 | /** @bat_iv: B.A.T.M.A.N. IV private structure */ |
| 260 | struct batadv_orig_ifinfo_bat_iv bat_iv; |
| 261 | |
| 262 | /** @refcount: number of contexts the object is used */ |
| 263 | struct kref refcount; |
| 264 | |
| 265 | /** @rcu: struct used for freeing in an RCU-safe manner */ |
| 266 | struct rcu_head rcu; |
| 267 | }; |
| 268 | |
| 269 | /** |
| 270 | * struct batadv_frag_table_entry - head in the fragment buffer table |
| 271 | */ |
| 272 | struct batadv_frag_table_entry { |
| 273 | /** @fragment_list: head of list with fragments */ |
| 274 | struct hlist_head fragment_list; |
| 275 | |
| 276 | /** @lock: lock to protect the list of fragments */ |
| 277 | spinlock_t lock; |
| 278 | |
| 279 | /** @timestamp: time (jiffie) of last received fragment */ |
| 280 | unsigned long timestamp; |
| 281 | |
| 282 | /** @seqno: sequence number of the fragments in the list */ |
| 283 | u16 seqno; |
| 284 | |
| 285 | /** @size: accumulated size of packets in list */ |
| 286 | u16 size; |
| 287 | |
| 288 | /** @total_size: expected size of the assembled packet */ |
| 289 | u16 total_size; |
| 290 | }; |
| 291 | |
| 292 | /** |
| 293 | * struct batadv_frag_list_entry - entry in a list of fragments |
| 294 | */ |
| 295 | struct batadv_frag_list_entry { |
| 296 | /** @list: list node information */ |
| 297 | struct hlist_node list; |
| 298 | |
| 299 | /** @skb: fragment */ |
| 300 | struct sk_buff *skb; |
| 301 | |
| 302 | /** @no: fragment number in the set */ |
| 303 | u8 no; |
| 304 | }; |
| 305 | |
| 306 | /** |
| 307 | * struct batadv_vlan_tt - VLAN specific TT attributes |
| 308 | */ |
| 309 | struct batadv_vlan_tt { |
| 310 | /** @crc: CRC32 checksum of the entries belonging to this vlan */ |
| 311 | u32 crc; |
| 312 | |
| 313 | /** @num_entries: number of TT entries for this VLAN */ |
| 314 | atomic_t num_entries; |
| 315 | }; |
| 316 | |
| 317 | /** |
| 318 | * struct batadv_orig_node_vlan - VLAN specific data per orig_node |
| 319 | */ |
| 320 | struct batadv_orig_node_vlan { |
| 321 | /** @vid: the VLAN identifier */ |
| 322 | unsigned short vid; |
| 323 | |
| 324 | /** @tt: VLAN specific TT attributes */ |
| 325 | struct batadv_vlan_tt tt; |
| 326 | |
| 327 | /** @list: list node for &batadv_orig_node.vlan_list */ |
| 328 | struct hlist_node list; |
| 329 | |
| 330 | /** |
| 331 | * @refcount: number of context where this object is currently in use |
| 332 | */ |
| 333 | struct kref refcount; |
| 334 | |
| 335 | /** @rcu: struct used for freeing in a RCU-safe manner */ |
| 336 | struct rcu_head rcu; |
| 337 | }; |
| 338 | |
| 339 | /** |
| 340 | * struct batadv_orig_bat_iv - B.A.T.M.A.N. IV private orig_node members |
| 341 | */ |
| 342 | struct batadv_orig_bat_iv { |
| 343 | /** |
| 344 | * @ogm_cnt_lock: lock protecting &batadv_orig_ifinfo_bat_iv.bcast_own, |
| 345 | * &batadv_orig_ifinfo_bat_iv.bcast_own_sum, |
| 346 | * &batadv_neigh_ifinfo_bat_iv.bat_iv.real_bits and |
| 347 | * &batadv_neigh_ifinfo_bat_iv.real_packet_count |
| 348 | */ |
| 349 | spinlock_t ogm_cnt_lock; |
| 350 | }; |
| 351 | |
| 352 | /** |
| 353 | * struct batadv_orig_node - structure for orig_list maintaining nodes of mesh |
| 354 | */ |
| 355 | struct batadv_orig_node { |
| 356 | /** @orig: originator ethernet address */ |
| 357 | u8 orig[ETH_ALEN]; |
| 358 | |
| 359 | /** @ifinfo_list: list for routers per outgoing interface */ |
| 360 | struct hlist_head ifinfo_list; |
| 361 | |
| 362 | /** |
| 363 | * @last_bonding_candidate: pointer to last ifinfo of last used router |
| 364 | */ |
| 365 | struct batadv_orig_ifinfo *last_bonding_candidate; |
| 366 | |
| 367 | #ifdef CONFIG_BATMAN_ADV_DAT |
| 368 | /** @dat_addr: address of the orig node in the distributed hash */ |
| 369 | batadv_dat_addr_t dat_addr; |
| 370 | #endif |
| 371 | |
| 372 | /** @last_seen: time when last packet from this node was received */ |
| 373 | unsigned long last_seen; |
| 374 | |
| 375 | /** |
| 376 | * @bcast_seqno_reset: time when the broadcast seqno window was reset |
| 377 | */ |
| 378 | unsigned long bcast_seqno_reset; |
| 379 | |
| 380 | #ifdef CONFIG_BATMAN_ADV_MCAST |
| 381 | /** |
| 382 | * @mcast_handler_lock: synchronizes mcast-capability and -flag changes |
| 383 | */ |
| 384 | spinlock_t mcast_handler_lock; |
| 385 | |
| 386 | /** @mcast_flags: multicast flags announced by the orig node */ |
| 387 | u8 mcast_flags; |
| 388 | |
| 389 | /** |
| 390 | * @mcast_want_all_unsnoopables_node: a list node for the |
| 391 | * mcast.want_all_unsnoopables list |
| 392 | */ |
| 393 | struct hlist_node mcast_want_all_unsnoopables_node; |
| 394 | |
| 395 | /** |
| 396 | * @mcast_want_all_ipv4_node: a list node for the mcast.want_all_ipv4 |
| 397 | * list |
| 398 | */ |
| 399 | struct hlist_node mcast_want_all_ipv4_node; |
| 400 | /** |
| 401 | * @mcast_want_all_ipv6_node: a list node for the mcast.want_all_ipv6 |
| 402 | * list |
| 403 | */ |
| 404 | struct hlist_node mcast_want_all_ipv6_node; |
| 405 | #endif |
| 406 | |
| 407 | /** @capabilities: announced capabilities of this originator */ |
| 408 | unsigned long capabilities; |
| 409 | |
| 410 | /** |
| 411 | * @capa_initialized: bitfield to remember whether a capability was |
| 412 | * initialized |
| 413 | */ |
| 414 | unsigned long capa_initialized; |
| 415 | |
| 416 | /** @last_ttvn: last seen translation table version number */ |
| 417 | atomic_t last_ttvn; |
| 418 | |
| 419 | /** @tt_buff: last tt changeset this node received from the orig node */ |
| 420 | unsigned char *tt_buff; |
| 421 | |
| 422 | /** |
| 423 | * @tt_buff_len: length of the last tt changeset this node received |
| 424 | * from the orig node |
| 425 | */ |
| 426 | s16 tt_buff_len; |
| 427 | |
| 428 | /** @tt_buff_lock: lock that protects tt_buff and tt_buff_len */ |
| 429 | spinlock_t tt_buff_lock; |
| 430 | |
| 431 | /** |
| 432 | * @tt_lock: prevents from updating the table while reading it. Table |
| 433 | * update is made up by two operations (data structure update and |
| 434 | * metdata -CRC/TTVN-recalculation) and they have to be executed |
| 435 | * atomically in order to avoid another thread to read the |
| 436 | * table/metadata between those. |
| 437 | */ |
| 438 | spinlock_t tt_lock; |
| 439 | |
| 440 | /** |
| 441 | * @bcast_bits: bitfield containing the info which payload broadcast |
| 442 | * originated from this orig node this host already has seen (relative |
| 443 | * to last_bcast_seqno) |
| 444 | */ |
| 445 | DECLARE_BITMAP(bcast_bits, BATADV_TQ_LOCAL_WINDOW_SIZE); |
| 446 | |
| 447 | /** |
| 448 | * @last_bcast_seqno: last broadcast sequence number received by this |
| 449 | * host |
| 450 | */ |
| 451 | u32 last_bcast_seqno; |
| 452 | |
| 453 | /** |
| 454 | * @neigh_list: list of potential next hop neighbor towards this orig |
| 455 | * node |
| 456 | */ |
| 457 | struct hlist_head neigh_list; |
| 458 | |
| 459 | /** |
| 460 | * @neigh_list_lock: lock protecting neigh_list, ifinfo_list, |
| 461 | * last_bonding_candidate and router |
| 462 | */ |
| 463 | spinlock_t neigh_list_lock; |
| 464 | |
| 465 | /** @hash_entry: hlist node for &batadv_priv.orig_hash */ |
| 466 | struct hlist_node hash_entry; |
| 467 | |
| 468 | /** @bat_priv: pointer to soft_iface this orig node belongs to */ |
| 469 | struct batadv_priv *bat_priv; |
| 470 | |
| 471 | /** @bcast_seqno_lock: lock protecting bcast_bits & last_bcast_seqno */ |
| 472 | spinlock_t bcast_seqno_lock; |
| 473 | |
| 474 | /** @refcount: number of contexts the object is used */ |
| 475 | struct kref refcount; |
| 476 | |
| 477 | /** @rcu: struct used for freeing in an RCU-safe manner */ |
| 478 | struct rcu_head rcu; |
| 479 | |
| 480 | #ifdef CONFIG_BATMAN_ADV_NC |
| 481 | /** @in_coding_list: list of nodes this orig can hear */ |
| 482 | struct list_head in_coding_list; |
| 483 | |
| 484 | /** @out_coding_list: list of nodes that can hear this orig */ |
| 485 | struct list_head out_coding_list; |
| 486 | |
| 487 | /** @in_coding_list_lock: protects in_coding_list */ |
| 488 | spinlock_t in_coding_list_lock; |
| 489 | |
| 490 | /** @out_coding_list_lock: protects out_coding_list */ |
| 491 | spinlock_t out_coding_list_lock; |
| 492 | #endif |
| 493 | |
| 494 | /** @fragments: array with heads for fragment chains */ |
| 495 | struct batadv_frag_table_entry fragments[BATADV_FRAG_BUFFER_COUNT]; |
| 496 | |
| 497 | /** |
| 498 | * @vlan_list: a list of orig_node_vlan structs, one per VLAN served by |
| 499 | * the originator represented by this object |
| 500 | */ |
| 501 | struct hlist_head vlan_list; |
| 502 | |
| 503 | /** @vlan_list_lock: lock protecting vlan_list */ |
| 504 | spinlock_t vlan_list_lock; |
| 505 | |
| 506 | /** @bat_iv: B.A.T.M.A.N. IV private structure */ |
| 507 | struct batadv_orig_bat_iv bat_iv; |
| 508 | }; |
| 509 | |
| 510 | /** |
| 511 | * enum batadv_orig_capabilities - orig node capabilities |
| 512 | */ |
| 513 | enum batadv_orig_capabilities { |
| 514 | /** |
| 515 | * @BATADV_ORIG_CAPA_HAS_DAT: orig node has distributed arp table |
| 516 | * enabled |
| 517 | */ |
| 518 | BATADV_ORIG_CAPA_HAS_DAT, |
| 519 | |
| 520 | /** @BATADV_ORIG_CAPA_HAS_NC: orig node has network coding enabled */ |
| 521 | BATADV_ORIG_CAPA_HAS_NC, |
| 522 | |
| 523 | /** @BATADV_ORIG_CAPA_HAS_TT: orig node has tt capability */ |
| 524 | BATADV_ORIG_CAPA_HAS_TT, |
| 525 | |
| 526 | /** |
| 527 | * @BATADV_ORIG_CAPA_HAS_MCAST: orig node has some multicast capability |
| 528 | * (= orig node announces a tvlv of type BATADV_TVLV_MCAST) |
| 529 | */ |
| 530 | BATADV_ORIG_CAPA_HAS_MCAST, |
| 531 | }; |
| 532 | |
| 533 | /** |
| 534 | * struct batadv_gw_node - structure for orig nodes announcing gw capabilities |
| 535 | */ |
| 536 | struct batadv_gw_node { |
| 537 | /** @list: list node for &batadv_priv_gw.list */ |
| 538 | struct hlist_node list; |
| 539 | |
| 540 | /** @orig_node: pointer to corresponding orig node */ |
| 541 | struct batadv_orig_node *orig_node; |
| 542 | |
| 543 | /** @bandwidth_down: advertised uplink download bandwidth */ |
| 544 | u32 bandwidth_down; |
| 545 | |
| 546 | /** @bandwidth_up: advertised uplink upload bandwidth */ |
| 547 | u32 bandwidth_up; |
| 548 | |
| 549 | /** @refcount: number of contexts the object is used */ |
| 550 | struct kref refcount; |
| 551 | |
| 552 | /** @rcu: struct used for freeing in an RCU-safe manner */ |
| 553 | struct rcu_head rcu; |
| 554 | }; |
| 555 | |
| 556 | DECLARE_EWMA(throughput, 10, 8) |
| 557 | |
| 558 | /** |
| 559 | * struct batadv_hardif_neigh_node_bat_v - B.A.T.M.A.N. V private neighbor |
| 560 | * information |
| 561 | */ |
| 562 | struct batadv_hardif_neigh_node_bat_v { |
| 563 | /** @throughput: ewma link throughput towards this neighbor */ |
| 564 | struct ewma_throughput throughput; |
| 565 | |
| 566 | /** @elp_interval: time interval between two ELP transmissions */ |
| 567 | u32 elp_interval; |
| 568 | |
| 569 | /** @elp_latest_seqno: latest and best known ELP sequence number */ |
| 570 | u32 elp_latest_seqno; |
| 571 | |
| 572 | /** |
| 573 | * @last_unicast_tx: when the last unicast packet has been sent to this |
| 574 | * neighbor |
| 575 | */ |
| 576 | unsigned long last_unicast_tx; |
| 577 | |
| 578 | /** @metric_work: work queue callback item for metric update */ |
| 579 | struct work_struct metric_work; |
| 580 | }; |
| 581 | |
| 582 | /** |
| 583 | * struct batadv_hardif_neigh_node - unique neighbor per hard-interface |
| 584 | */ |
| 585 | struct batadv_hardif_neigh_node { |
| 586 | /** @list: list node for &batadv_hard_iface.neigh_list */ |
| 587 | struct hlist_node list; |
| 588 | |
| 589 | /** @addr: the MAC address of the neighboring interface */ |
| 590 | u8 addr[ETH_ALEN]; |
| 591 | |
| 592 | /** |
| 593 | * @orig: the address of the originator this neighbor node belongs to |
| 594 | */ |
| 595 | u8 orig[ETH_ALEN]; |
| 596 | |
| 597 | /** @if_incoming: pointer to incoming hard-interface */ |
| 598 | struct batadv_hard_iface *if_incoming; |
| 599 | |
| 600 | /** @last_seen: when last packet via this neighbor was received */ |
| 601 | unsigned long last_seen; |
| 602 | |
| 603 | #ifdef CONFIG_BATMAN_ADV_BATMAN_V |
| 604 | /** @bat_v: B.A.T.M.A.N. V private data */ |
| 605 | struct batadv_hardif_neigh_node_bat_v bat_v; |
| 606 | #endif |
| 607 | |
| 608 | /** @refcount: number of contexts the object is used */ |
| 609 | struct kref refcount; |
| 610 | |
| 611 | /** @rcu: struct used for freeing in a RCU-safe manner */ |
| 612 | struct rcu_head rcu; |
| 613 | }; |
| 614 | |
| 615 | /** |
| 616 | * struct batadv_neigh_node - structure for single hops neighbors |
| 617 | */ |
| 618 | struct batadv_neigh_node { |
| 619 | /** @list: list node for &batadv_orig_node.neigh_list */ |
| 620 | struct hlist_node list; |
| 621 | |
| 622 | /** @orig_node: pointer to corresponding orig_node */ |
| 623 | struct batadv_orig_node *orig_node; |
| 624 | |
| 625 | /** @addr: the MAC address of the neighboring interface */ |
| 626 | u8 addr[ETH_ALEN]; |
| 627 | |
| 628 | /** @ifinfo_list: list for routing metrics per outgoing interface */ |
| 629 | struct hlist_head ifinfo_list; |
| 630 | |
| 631 | /** @ifinfo_lock: lock protecting ifinfo_list and its members */ |
| 632 | spinlock_t ifinfo_lock; |
| 633 | |
| 634 | /** @if_incoming: pointer to incoming hard-interface */ |
| 635 | struct batadv_hard_iface *if_incoming; |
| 636 | |
| 637 | /** @last_seen: when last packet via this neighbor was received */ |
| 638 | unsigned long last_seen; |
| 639 | |
| 640 | /** @hardif_neigh: hardif_neigh of this neighbor */ |
| 641 | struct batadv_hardif_neigh_node *hardif_neigh; |
| 642 | |
| 643 | /** @refcount: number of contexts the object is used */ |
| 644 | struct kref refcount; |
| 645 | |
| 646 | /** @rcu: struct used for freeing in an RCU-safe manner */ |
| 647 | struct rcu_head rcu; |
| 648 | }; |
| 649 | |
| 650 | /** |
| 651 | * struct batadv_neigh_ifinfo_bat_iv - neighbor information per outgoing |
| 652 | * interface for B.A.T.M.A.N. IV |
| 653 | */ |
| 654 | struct batadv_neigh_ifinfo_bat_iv { |
| 655 | /** @tq_recv: ring buffer of received TQ values from this neigh node */ |
| 656 | u8 tq_recv[BATADV_TQ_GLOBAL_WINDOW_SIZE]; |
| 657 | |
| 658 | /** @tq_index: ring buffer index */ |
| 659 | u8 tq_index; |
| 660 | |
| 661 | /** |
| 662 | * @tq_avg: averaged tq of all tq values in the ring buffer (tq_recv) |
| 663 | */ |
| 664 | u8 tq_avg; |
| 665 | |
| 666 | /** |
| 667 | * @real_bits: bitfield containing the number of OGMs received from this |
| 668 | * neigh node (relative to orig_node->last_real_seqno) |
| 669 | */ |
| 670 | DECLARE_BITMAP(real_bits, BATADV_TQ_LOCAL_WINDOW_SIZE); |
| 671 | |
| 672 | /** @real_packet_count: counted result of real_bits */ |
| 673 | u8 real_packet_count; |
| 674 | }; |
| 675 | |
| 676 | /** |
| 677 | * struct batadv_neigh_ifinfo_bat_v - neighbor information per outgoing |
| 678 | * interface for B.A.T.M.A.N. V |
| 679 | */ |
| 680 | struct batadv_neigh_ifinfo_bat_v { |
| 681 | /** |
| 682 | * @throughput: last throughput metric received from originator via this |
| 683 | * neigh |
| 684 | */ |
| 685 | u32 throughput; |
| 686 | |
| 687 | /** @last_seqno: last sequence number known for this neighbor */ |
| 688 | u32 last_seqno; |
| 689 | }; |
| 690 | |
| 691 | /** |
| 692 | * struct batadv_neigh_ifinfo - neighbor information per outgoing interface |
| 693 | */ |
| 694 | struct batadv_neigh_ifinfo { |
| 695 | /** @list: list node for &batadv_neigh_node.ifinfo_list */ |
| 696 | struct hlist_node list; |
| 697 | |
| 698 | /** @if_outgoing: pointer to outgoing hard-interface */ |
| 699 | struct batadv_hard_iface *if_outgoing; |
| 700 | |
| 701 | /** @bat_iv: B.A.T.M.A.N. IV private structure */ |
| 702 | struct batadv_neigh_ifinfo_bat_iv bat_iv; |
| 703 | |
| 704 | #ifdef CONFIG_BATMAN_ADV_BATMAN_V |
| 705 | /** @bat_v: B.A.T.M.A.N. V private data */ |
| 706 | struct batadv_neigh_ifinfo_bat_v bat_v; |
| 707 | #endif |
| 708 | |
| 709 | /** @last_ttl: last received ttl from this neigh node */ |
| 710 | u8 last_ttl; |
| 711 | |
| 712 | /** @refcount: number of contexts the object is used */ |
| 713 | struct kref refcount; |
| 714 | |
| 715 | /** @rcu: struct used for freeing in a RCU-safe manner */ |
| 716 | struct rcu_head rcu; |
| 717 | }; |
| 718 | |
| 719 | #ifdef CONFIG_BATMAN_ADV_BLA |
| 720 | |
| 721 | /** |
| 722 | * struct batadv_bcast_duplist_entry - structure for LAN broadcast suppression |
| 723 | */ |
| 724 | struct batadv_bcast_duplist_entry { |
| 725 | /** @orig: mac address of orig node orginating the broadcast */ |
| 726 | u8 orig[ETH_ALEN]; |
| 727 | |
| 728 | /** @crc: crc32 checksum of broadcast payload */ |
| 729 | __be32 crc; |
| 730 | |
| 731 | /** @entrytime: time when the broadcast packet was received */ |
| 732 | unsigned long entrytime; |
| 733 | }; |
| 734 | #endif |
| 735 | |
| 736 | /** |
| 737 | * enum batadv_counters - indices for traffic counters |
| 738 | */ |
| 739 | enum batadv_counters { |
| 740 | /** @BATADV_CNT_TX: transmitted payload traffic packet counter */ |
| 741 | BATADV_CNT_TX, |
| 742 | |
| 743 | /** @BATADV_CNT_TX_BYTES: transmitted payload traffic bytes counter */ |
| 744 | BATADV_CNT_TX_BYTES, |
| 745 | |
| 746 | /** |
| 747 | * @BATADV_CNT_TX_DROPPED: dropped transmission payload traffic packet |
| 748 | * counter |
| 749 | */ |
| 750 | BATADV_CNT_TX_DROPPED, |
| 751 | |
| 752 | /** @BATADV_CNT_RX: received payload traffic packet counter */ |
| 753 | BATADV_CNT_RX, |
| 754 | |
| 755 | /** @BATADV_CNT_RX_BYTES: received payload traffic bytes counter */ |
| 756 | BATADV_CNT_RX_BYTES, |
| 757 | |
| 758 | /** @BATADV_CNT_FORWARD: forwarded payload traffic packet counter */ |
| 759 | BATADV_CNT_FORWARD, |
| 760 | |
| 761 | /** |
| 762 | * @BATADV_CNT_FORWARD_BYTES: forwarded payload traffic bytes counter |
| 763 | */ |
| 764 | BATADV_CNT_FORWARD_BYTES, |
| 765 | |
| 766 | /** |
| 767 | * @BATADV_CNT_MGMT_TX: transmitted routing protocol traffic packet |
| 768 | * counter |
| 769 | */ |
| 770 | BATADV_CNT_MGMT_TX, |
| 771 | |
| 772 | /** |
| 773 | * @BATADV_CNT_MGMT_TX_BYTES: transmitted routing protocol traffic bytes |
| 774 | * counter |
| 775 | */ |
| 776 | BATADV_CNT_MGMT_TX_BYTES, |
| 777 | |
| 778 | /** |
| 779 | * @BATADV_CNT_MGMT_RX: received routing protocol traffic packet counter |
| 780 | */ |
| 781 | BATADV_CNT_MGMT_RX, |
| 782 | |
| 783 | /** |
| 784 | * @BATADV_CNT_MGMT_RX_BYTES: received routing protocol traffic bytes |
| 785 | * counter |
| 786 | */ |
| 787 | BATADV_CNT_MGMT_RX_BYTES, |
| 788 | |
| 789 | /** @BATADV_CNT_FRAG_TX: transmitted fragment traffic packet counter */ |
| 790 | BATADV_CNT_FRAG_TX, |
| 791 | |
| 792 | /** |
| 793 | * @BATADV_CNT_FRAG_TX_BYTES: transmitted fragment traffic bytes counter |
| 794 | */ |
| 795 | BATADV_CNT_FRAG_TX_BYTES, |
| 796 | |
| 797 | /** @BATADV_CNT_FRAG_RX: received fragment traffic packet counter */ |
| 798 | BATADV_CNT_FRAG_RX, |
| 799 | |
| 800 | /** |
| 801 | * @BATADV_CNT_FRAG_RX_BYTES: received fragment traffic bytes counter |
| 802 | */ |
| 803 | BATADV_CNT_FRAG_RX_BYTES, |
| 804 | |
| 805 | /** @BATADV_CNT_FRAG_FWD: forwarded fragment traffic packet counter */ |
| 806 | BATADV_CNT_FRAG_FWD, |
| 807 | |
| 808 | /** |
| 809 | * @BATADV_CNT_FRAG_FWD_BYTES: forwarded fragment traffic bytes counter |
| 810 | */ |
| 811 | BATADV_CNT_FRAG_FWD_BYTES, |
| 812 | |
| 813 | /** |
| 814 | * @BATADV_CNT_TT_REQUEST_TX: transmitted tt req traffic packet counter |
| 815 | */ |
| 816 | BATADV_CNT_TT_REQUEST_TX, |
| 817 | |
| 818 | /** @BATADV_CNT_TT_REQUEST_RX: received tt req traffic packet counter */ |
| 819 | BATADV_CNT_TT_REQUEST_RX, |
| 820 | |
| 821 | /** |
| 822 | * @BATADV_CNT_TT_RESPONSE_TX: transmitted tt resp traffic packet |
| 823 | * counter |
| 824 | */ |
| 825 | BATADV_CNT_TT_RESPONSE_TX, |
| 826 | |
| 827 | /** |
| 828 | * @BATADV_CNT_TT_RESPONSE_RX: received tt resp traffic packet counter |
| 829 | */ |
| 830 | BATADV_CNT_TT_RESPONSE_RX, |
| 831 | |
| 832 | /** |
| 833 | * @BATADV_CNT_TT_ROAM_ADV_TX: transmitted tt roam traffic packet |
| 834 | * counter |
| 835 | */ |
| 836 | BATADV_CNT_TT_ROAM_ADV_TX, |
| 837 | |
| 838 | /** |
| 839 | * @BATADV_CNT_TT_ROAM_ADV_RX: received tt roam traffic packet counter |
| 840 | */ |
| 841 | BATADV_CNT_TT_ROAM_ADV_RX, |
| 842 | |
| 843 | #ifdef CONFIG_BATMAN_ADV_DAT |
| 844 | /** |
| 845 | * @BATADV_CNT_DAT_GET_TX: transmitted dht GET traffic packet counter |
| 846 | */ |
| 847 | BATADV_CNT_DAT_GET_TX, |
| 848 | |
| 849 | /** @BATADV_CNT_DAT_GET_RX: received dht GET traffic packet counter */ |
| 850 | BATADV_CNT_DAT_GET_RX, |
| 851 | |
| 852 | /** |
| 853 | * @BATADV_CNT_DAT_PUT_TX: transmitted dht PUT traffic packet counter |
| 854 | */ |
| 855 | BATADV_CNT_DAT_PUT_TX, |
| 856 | |
| 857 | /** @BATADV_CNT_DAT_PUT_RX: received dht PUT traffic packet counter */ |
| 858 | BATADV_CNT_DAT_PUT_RX, |
| 859 | |
| 860 | /** |
| 861 | * @BATADV_CNT_DAT_CACHED_REPLY_TX: transmitted dat cache reply traffic |
| 862 | * packet counter |
| 863 | */ |
| 864 | BATADV_CNT_DAT_CACHED_REPLY_TX, |
| 865 | #endif |
| 866 | |
| 867 | #ifdef CONFIG_BATMAN_ADV_NC |
| 868 | /** |
| 869 | * @BATADV_CNT_NC_CODE: transmitted nc-combined traffic packet counter |
| 870 | */ |
| 871 | BATADV_CNT_NC_CODE, |
| 872 | |
| 873 | /** |
| 874 | * @BATADV_CNT_NC_CODE_BYTES: transmitted nc-combined traffic bytes |
| 875 | * counter |
| 876 | */ |
| 877 | BATADV_CNT_NC_CODE_BYTES, |
| 878 | |
| 879 | /** |
| 880 | * @BATADV_CNT_NC_RECODE: transmitted nc-recombined traffic packet |
| 881 | * counter |
| 882 | */ |
| 883 | BATADV_CNT_NC_RECODE, |
| 884 | |
| 885 | /** |
| 886 | * @BATADV_CNT_NC_RECODE_BYTES: transmitted nc-recombined traffic bytes |
| 887 | * counter |
| 888 | */ |
| 889 | BATADV_CNT_NC_RECODE_BYTES, |
| 890 | |
| 891 | /** |
| 892 | * @BATADV_CNT_NC_BUFFER: counter for packets buffered for later nc |
| 893 | * decoding |
| 894 | */ |
| 895 | BATADV_CNT_NC_BUFFER, |
| 896 | |
| 897 | /** |
| 898 | * @BATADV_CNT_NC_DECODE: received and nc-decoded traffic packet counter |
| 899 | */ |
| 900 | BATADV_CNT_NC_DECODE, |
| 901 | |
| 902 | /** |
| 903 | * @BATADV_CNT_NC_DECODE_BYTES: received and nc-decoded traffic bytes |
| 904 | * counter |
| 905 | */ |
| 906 | BATADV_CNT_NC_DECODE_BYTES, |
| 907 | |
| 908 | /** |
| 909 | * @BATADV_CNT_NC_DECODE_FAILED: received and decode-failed traffic |
| 910 | * packet counter |
| 911 | */ |
| 912 | BATADV_CNT_NC_DECODE_FAILED, |
| 913 | |
| 914 | /** |
| 915 | * @BATADV_CNT_NC_SNIFFED: counter for nc-decoded packets received in |
| 916 | * promisc mode. |
| 917 | */ |
| 918 | BATADV_CNT_NC_SNIFFED, |
| 919 | #endif |
| 920 | |
| 921 | /** @BATADV_CNT_NUM: number of traffic counters */ |
| 922 | BATADV_CNT_NUM, |
| 923 | }; |
| 924 | |
| 925 | /** |
| 926 | * struct batadv_priv_tt - per mesh interface translation table data |
| 927 | */ |
| 928 | struct batadv_priv_tt { |
| 929 | /** @vn: translation table version number */ |
| 930 | atomic_t vn; |
| 931 | |
| 932 | /** |
| 933 | * @ogm_append_cnt: counter of number of OGMs containing the local tt |
| 934 | * diff |
| 935 | */ |
| 936 | atomic_t ogm_append_cnt; |
| 937 | |
| 938 | /** @local_changes: changes registered in an originator interval */ |
| 939 | atomic_t local_changes; |
| 940 | |
| 941 | /** |
| 942 | * @changes_list: tracks tt local changes within an originator interval |
| 943 | */ |
| 944 | struct list_head changes_list; |
| 945 | |
| 946 | /** @local_hash: local translation table hash table */ |
| 947 | struct batadv_hashtable *local_hash; |
| 948 | |
| 949 | /** @global_hash: global translation table hash table */ |
| 950 | struct batadv_hashtable *global_hash; |
| 951 | |
| 952 | /** @req_list: list of pending & unanswered tt_requests */ |
| 953 | struct hlist_head req_list; |
| 954 | |
| 955 | /** |
| 956 | * @roam_list: list of the last roaming events of each client limiting |
| 957 | * the number of roaming events to avoid route flapping |
| 958 | */ |
| 959 | struct list_head roam_list; |
| 960 | |
| 961 | /** @changes_list_lock: lock protecting changes_list */ |
| 962 | spinlock_t changes_list_lock; |
| 963 | |
| 964 | /** @req_list_lock: lock protecting req_list */ |
| 965 | spinlock_t req_list_lock; |
| 966 | |
| 967 | /** @roam_list_lock: lock protecting roam_list */ |
| 968 | spinlock_t roam_list_lock; |
| 969 | |
| 970 | /** @last_changeset: last tt changeset this host has generated */ |
| 971 | unsigned char *last_changeset; |
| 972 | |
| 973 | /** |
| 974 | * @last_changeset_len: length of last tt changeset this host has |
| 975 | * generated |
| 976 | */ |
| 977 | s16 last_changeset_len; |
| 978 | |
| 979 | /** |
| 980 | * @last_changeset_lock: lock protecting last_changeset & |
| 981 | * last_changeset_len |
| 982 | */ |
| 983 | spinlock_t last_changeset_lock; |
| 984 | |
| 985 | /** |
| 986 | * @commit_lock: prevents from executing a local TT commit while reading |
| 987 | * the local table. The local TT commit is made up by two operations |
| 988 | * (data structure update and metdata -CRC/TTVN- recalculation) and |
| 989 | * they have to be executed atomically in order to avoid another thread |
| 990 | * to read the table/metadata between those. |
| 991 | */ |
| 992 | spinlock_t commit_lock; |
| 993 | |
| 994 | /** @work: work queue callback item for translation table purging */ |
| 995 | struct delayed_work work; |
| 996 | }; |
| 997 | |
| 998 | #ifdef CONFIG_BATMAN_ADV_BLA |
| 999 | |
| 1000 | /** |
| 1001 | * struct batadv_priv_bla - per mesh interface bridge loope avoidance data |
| 1002 | */ |
| 1003 | struct batadv_priv_bla { |
| 1004 | /** @num_requests: number of bla requests in flight */ |
| 1005 | atomic_t num_requests; |
| 1006 | |
| 1007 | /** |
| 1008 | * @claim_hash: hash table containing mesh nodes this host has claimed |
| 1009 | */ |
| 1010 | struct batadv_hashtable *claim_hash; |
| 1011 | |
| 1012 | /** |
| 1013 | * @backbone_hash: hash table containing all detected backbone gateways |
| 1014 | */ |
| 1015 | struct batadv_hashtable *backbone_hash; |
| 1016 | |
| 1017 | /** @loopdetect_addr: MAC address used for own loopdetection frames */ |
| 1018 | u8 loopdetect_addr[ETH_ALEN]; |
| 1019 | |
| 1020 | /** |
| 1021 | * @loopdetect_lasttime: time when the loopdetection frames were sent |
| 1022 | */ |
| 1023 | unsigned long loopdetect_lasttime; |
| 1024 | |
| 1025 | /** |
| 1026 | * @loopdetect_next: how many periods to wait for the next loopdetect |
| 1027 | * process |
| 1028 | */ |
| 1029 | atomic_t loopdetect_next; |
| 1030 | |
| 1031 | /** |
| 1032 | * @bcast_duplist: recently received broadcast packets array (for |
| 1033 | * broadcast duplicate suppression) |
| 1034 | */ |
| 1035 | struct batadv_bcast_duplist_entry bcast_duplist[BATADV_DUPLIST_SIZE]; |
| 1036 | |
| 1037 | /** |
| 1038 | * @bcast_duplist_curr: index of last broadcast packet added to |
| 1039 | * bcast_duplist |
| 1040 | */ |
| 1041 | int bcast_duplist_curr; |
| 1042 | |
| 1043 | /** |
| 1044 | * @bcast_duplist_lock: lock protecting bcast_duplist & |
| 1045 | * bcast_duplist_curr |
| 1046 | */ |
| 1047 | spinlock_t bcast_duplist_lock; |
| 1048 | |
| 1049 | /** @claim_dest: local claim data (e.g. claim group) */ |
| 1050 | struct batadv_bla_claim_dst claim_dest; |
| 1051 | |
| 1052 | /** @work: work queue callback item for cleanups & bla announcements */ |
| 1053 | struct delayed_work work; |
| 1054 | }; |
| 1055 | #endif |
| 1056 | |
| 1057 | #ifdef CONFIG_BATMAN_ADV_DEBUG |
| 1058 | |
| 1059 | /** |
| 1060 | * struct batadv_priv_debug_log - debug logging data |
| 1061 | */ |
| 1062 | struct batadv_priv_debug_log { |
| 1063 | /** @log_buff: buffer holding the logs (ring bufer) */ |
| 1064 | char log_buff[BATADV_LOG_BUF_LEN]; |
| 1065 | |
| 1066 | /** @log_start: index of next character to read */ |
| 1067 | unsigned long log_start; |
| 1068 | |
| 1069 | /** @log_end: index of next character to write */ |
| 1070 | unsigned long log_end; |
| 1071 | |
| 1072 | /** @lock: lock protecting log_buff, log_start & log_end */ |
| 1073 | spinlock_t lock; |
| 1074 | |
| 1075 | /** @queue_wait: log reader's wait queue */ |
| 1076 | wait_queue_head_t queue_wait; |
| 1077 | }; |
| 1078 | #endif |
| 1079 | |
| 1080 | /** |
| 1081 | * struct batadv_priv_gw - per mesh interface gateway data |
| 1082 | */ |
| 1083 | struct batadv_priv_gw { |
| 1084 | /** @gateway_list: list of available gateway nodes */ |
| 1085 | struct hlist_head gateway_list; |
| 1086 | |
| 1087 | /** @list_lock: lock protecting gateway_list, curr_gw, generation */ |
| 1088 | spinlock_t list_lock; |
| 1089 | |
| 1090 | /** @curr_gw: pointer to currently selected gateway node */ |
| 1091 | struct batadv_gw_node __rcu *curr_gw; |
| 1092 | |
| 1093 | /** @generation: current (generation) sequence number */ |
| 1094 | unsigned int generation; |
| 1095 | |
| 1096 | /** |
| 1097 | * @mode: gateway operation: off, client or server (see batadv_gw_modes) |
| 1098 | */ |
| 1099 | atomic_t mode; |
| 1100 | |
| 1101 | /** @sel_class: gateway selection class (applies if gw_mode client) */ |
| 1102 | atomic_t sel_class; |
| 1103 | |
| 1104 | /** |
| 1105 | * @bandwidth_down: advertised uplink download bandwidth (if gw_mode |
| 1106 | * server) |
| 1107 | */ |
| 1108 | atomic_t bandwidth_down; |
| 1109 | |
| 1110 | /** |
| 1111 | * @bandwidth_up: advertised uplink upload bandwidth (if gw_mode server) |
| 1112 | */ |
| 1113 | atomic_t bandwidth_up; |
| 1114 | |
| 1115 | /** @reselect: bool indicating a gateway re-selection is in progress */ |
| 1116 | atomic_t reselect; |
| 1117 | }; |
| 1118 | |
| 1119 | /** |
| 1120 | * struct batadv_priv_tvlv - per mesh interface tvlv data |
| 1121 | */ |
| 1122 | struct batadv_priv_tvlv { |
| 1123 | /** |
| 1124 | * @container_list: list of registered tvlv containers to be sent with |
| 1125 | * each OGM |
| 1126 | */ |
| 1127 | struct hlist_head container_list; |
| 1128 | |
| 1129 | /** @handler_list: list of the various tvlv content handlers */ |
| 1130 | struct hlist_head handler_list; |
| 1131 | |
| 1132 | /** @container_list_lock: protects tvlv container list access */ |
| 1133 | spinlock_t container_list_lock; |
| 1134 | |
| 1135 | /** @handler_list_lock: protects handler list access */ |
| 1136 | spinlock_t handler_list_lock; |
| 1137 | }; |
| 1138 | |
| 1139 | #ifdef CONFIG_BATMAN_ADV_DAT |
| 1140 | |
| 1141 | /** |
| 1142 | * struct batadv_priv_dat - per mesh interface DAT private data |
| 1143 | */ |
| 1144 | struct batadv_priv_dat { |
| 1145 | /** @addr: node DAT address */ |
| 1146 | batadv_dat_addr_t addr; |
| 1147 | |
| 1148 | /** @hash: hashtable representing the local ARP cache */ |
| 1149 | struct batadv_hashtable *hash; |
| 1150 | |
| 1151 | /** @work: work queue callback item for cache purging */ |
| 1152 | struct delayed_work work; |
| 1153 | }; |
| 1154 | #endif |
| 1155 | |
| 1156 | #ifdef CONFIG_BATMAN_ADV_MCAST |
| 1157 | /** |
| 1158 | * struct batadv_mcast_querier_state - IGMP/MLD querier state when bridged |
| 1159 | */ |
| 1160 | struct batadv_mcast_querier_state { |
| 1161 | /** @exists: whether a querier exists in the mesh */ |
| 1162 | unsigned char exists:1; |
| 1163 | |
| 1164 | /** |
| 1165 | * @shadowing: if a querier exists, whether it is potentially shadowing |
| 1166 | * multicast listeners (i.e. querier is behind our own bridge segment) |
| 1167 | */ |
| 1168 | unsigned char shadowing:1; |
| 1169 | }; |
| 1170 | |
| 1171 | /** |
| 1172 | * struct batadv_priv_mcast - per mesh interface mcast data |
| 1173 | */ |
| 1174 | struct batadv_priv_mcast { |
| 1175 | /** |
| 1176 | * @mla_list: list of multicast addresses we are currently announcing |
| 1177 | * via TT |
| 1178 | */ |
| 1179 | struct hlist_head mla_list; /* see __batadv_mcast_mla_update() */ |
| 1180 | |
| 1181 | /** |
| 1182 | * @want_all_unsnoopables_list: a list of orig_nodes wanting all |
| 1183 | * unsnoopable multicast traffic |
| 1184 | */ |
| 1185 | struct hlist_head want_all_unsnoopables_list; |
| 1186 | |
| 1187 | /** |
| 1188 | * @want_all_ipv4_list: a list of orig_nodes wanting all IPv4 multicast |
| 1189 | * traffic |
| 1190 | */ |
| 1191 | struct hlist_head want_all_ipv4_list; |
| 1192 | |
| 1193 | /** |
| 1194 | * @want_all_ipv6_list: a list of orig_nodes wanting all IPv6 multicast |
| 1195 | * traffic |
| 1196 | */ |
| 1197 | struct hlist_head want_all_ipv6_list; |
| 1198 | |
| 1199 | /** @querier_ipv4: the current state of an IGMP querier in the mesh */ |
| 1200 | struct batadv_mcast_querier_state querier_ipv4; |
| 1201 | |
| 1202 | /** @querier_ipv6: the current state of an MLD querier in the mesh */ |
| 1203 | struct batadv_mcast_querier_state querier_ipv6; |
| 1204 | |
| 1205 | /** @flags: the flags we have last sent in our mcast tvlv */ |
| 1206 | u8 flags; |
| 1207 | |
| 1208 | /** @enabled: whether the multicast tvlv is currently enabled */ |
| 1209 | unsigned char enabled:1; |
| 1210 | |
| 1211 | /** @bridged: whether the soft interface has a bridge on top */ |
| 1212 | unsigned char bridged:1; |
| 1213 | |
| 1214 | /** |
| 1215 | * @mla_lock: a lock protecting mla_list and mla_flags |
| 1216 | */ |
| 1217 | spinlock_t mla_lock; |
| 1218 | |
| 1219 | /** |
| 1220 | * @num_want_all_unsnoopables: number of nodes wanting unsnoopable IP |
| 1221 | * traffic |
| 1222 | */ |
| 1223 | atomic_t num_want_all_unsnoopables; |
| 1224 | |
| 1225 | /** @num_want_all_ipv4: counter for items in want_all_ipv4_list */ |
| 1226 | atomic_t num_want_all_ipv4; |
| 1227 | |
| 1228 | /** @num_want_all_ipv6: counter for items in want_all_ipv6_list */ |
| 1229 | atomic_t num_want_all_ipv6; |
| 1230 | |
| 1231 | /** |
| 1232 | * @want_lists_lock: lock for protecting modifications to mcasts |
| 1233 | * want_all_{unsnoopables,ipv4,ipv6}_list (traversals are rcu-locked) |
| 1234 | */ |
| 1235 | spinlock_t want_lists_lock; |
| 1236 | |
| 1237 | /** @work: work queue callback item for multicast TT and TVLV updates */ |
| 1238 | struct delayed_work work; |
| 1239 | }; |
| 1240 | #endif |
| 1241 | |
| 1242 | /** |
| 1243 | * struct batadv_priv_nc - per mesh interface network coding private data |
| 1244 | */ |
| 1245 | struct batadv_priv_nc { |
| 1246 | /** @work: work queue callback item for cleanup */ |
| 1247 | struct delayed_work work; |
| 1248 | |
| 1249 | #ifdef CONFIG_BATMAN_ADV_DEBUGFS |
| 1250 | /** |
| 1251 | * @debug_dir: dentry for nc subdir in batman-adv directory in debugfs |
| 1252 | */ |
| 1253 | struct dentry *debug_dir; |
| 1254 | #endif |
| 1255 | |
| 1256 | /** |
| 1257 | * @min_tq: only consider neighbors for encoding if neigh_tq > min_tq |
| 1258 | */ |
| 1259 | u8 min_tq; |
| 1260 | |
| 1261 | /** |
| 1262 | * @max_fwd_delay: maximum packet forward delay to allow coding of |
| 1263 | * packets |
| 1264 | */ |
| 1265 | u32 max_fwd_delay; |
| 1266 | |
| 1267 | /** |
| 1268 | * @max_buffer_time: buffer time for sniffed packets used to decoding |
| 1269 | */ |
| 1270 | u32 max_buffer_time; |
| 1271 | |
| 1272 | /** |
| 1273 | * @timestamp_fwd_flush: timestamp of last forward packet queue flush |
| 1274 | */ |
| 1275 | unsigned long timestamp_fwd_flush; |
| 1276 | |
| 1277 | /** |
| 1278 | * @timestamp_sniffed_purge: timestamp of last sniffed packet queue |
| 1279 | * purge |
| 1280 | */ |
| 1281 | unsigned long timestamp_sniffed_purge; |
| 1282 | |
| 1283 | /** |
| 1284 | * @coding_hash: Hash table used to buffer skbs while waiting for |
| 1285 | * another incoming skb to code it with. Skbs are added to the buffer |
| 1286 | * just before being forwarded in routing.c |
| 1287 | */ |
| 1288 | struct batadv_hashtable *coding_hash; |
| 1289 | |
| 1290 | /** |
| 1291 | * @decoding_hash: Hash table used to buffer skbs that might be needed |
| 1292 | * to decode a received coded skb. The buffer is used for 1) skbs |
| 1293 | * arriving on the soft-interface; 2) skbs overheard on the |
| 1294 | * hard-interface; and 3) skbs forwarded by batman-adv. |
| 1295 | */ |
| 1296 | struct batadv_hashtable *decoding_hash; |
| 1297 | }; |
| 1298 | |
| 1299 | /** |
| 1300 | * struct batadv_tp_unacked - unacked packet meta-information |
| 1301 | * |
| 1302 | * This struct is supposed to represent a buffer unacked packet. However, since |
| 1303 | * the purpose of the TP meter is to count the traffic only, there is no need to |
| 1304 | * store the entire sk_buff, the starting offset and the length are enough |
| 1305 | */ |
| 1306 | struct batadv_tp_unacked { |
| 1307 | /** @seqno: seqno of the unacked packet */ |
| 1308 | u32 seqno; |
| 1309 | |
| 1310 | /** @len: length of the packet */ |
| 1311 | u16 len; |
| 1312 | |
| 1313 | /** @list: list node for &batadv_tp_vars.unacked_list */ |
| 1314 | struct list_head list; |
| 1315 | }; |
| 1316 | |
| 1317 | /** |
| 1318 | * enum batadv_tp_meter_role - Modus in tp meter session |
| 1319 | */ |
| 1320 | enum batadv_tp_meter_role { |
| 1321 | /** @BATADV_TP_RECEIVER: Initialized as receiver */ |
| 1322 | BATADV_TP_RECEIVER, |
| 1323 | |
| 1324 | /** @BATADV_TP_SENDER: Initialized as sender */ |
| 1325 | BATADV_TP_SENDER |
| 1326 | }; |
| 1327 | |
| 1328 | /** |
| 1329 | * struct batadv_tp_vars - tp meter private variables per session |
| 1330 | */ |
| 1331 | struct batadv_tp_vars { |
| 1332 | /** @list: list node for &bat_priv.tp_list */ |
| 1333 | struct hlist_node list; |
| 1334 | |
| 1335 | /** @timer: timer for ack (receiver) and retry (sender) */ |
| 1336 | struct timer_list timer; |
| 1337 | |
| 1338 | /** @bat_priv: pointer to the mesh object */ |
| 1339 | struct batadv_priv *bat_priv; |
| 1340 | |
| 1341 | /** @start_time: start time in jiffies */ |
| 1342 | unsigned long start_time; |
| 1343 | |
| 1344 | /** @other_end: mac address of remote */ |
| 1345 | u8 other_end[ETH_ALEN]; |
| 1346 | |
| 1347 | /** @role: receiver/sender modi */ |
| 1348 | enum batadv_tp_meter_role role; |
| 1349 | |
| 1350 | /** @sending: sending binary semaphore: 1 if sending, 0 is not */ |
| 1351 | atomic_t sending; |
| 1352 | |
| 1353 | /** @reason: reason for a stopped session */ |
| 1354 | enum batadv_tp_meter_reason reason; |
| 1355 | |
| 1356 | /** @finish_work: work item for the finishing procedure */ |
| 1357 | struct delayed_work finish_work; |
| 1358 | |
| 1359 | /** @test_length: test length in milliseconds */ |
| 1360 | u32 test_length; |
| 1361 | |
| 1362 | /** @session: TP session identifier */ |
| 1363 | u8 session[2]; |
| 1364 | |
| 1365 | /** @icmp_uid: local ICMP "socket" index */ |
| 1366 | u8 icmp_uid; |
| 1367 | |
| 1368 | /* sender variables */ |
| 1369 | |
| 1370 | /** @dec_cwnd: decimal part of the cwnd used during linear growth */ |
| 1371 | u16 dec_cwnd; |
| 1372 | |
| 1373 | /** @cwnd: current size of the congestion window */ |
| 1374 | u32 cwnd; |
| 1375 | |
| 1376 | /** @cwnd_lock: lock do protect @cwnd & @dec_cwnd */ |
| 1377 | spinlock_t cwnd_lock; |
| 1378 | |
| 1379 | /** |
| 1380 | * @ss_threshold: Slow Start threshold. Once cwnd exceeds this value the |
| 1381 | * connection switches to the Congestion Avoidance state |
| 1382 | */ |
| 1383 | u32 ss_threshold; |
| 1384 | |
| 1385 | /** @last_acked: last acked byte */ |
| 1386 | atomic_t last_acked; |
| 1387 | |
| 1388 | /** @last_sent: last sent byte, not yet acked */ |
| 1389 | u32 last_sent; |
| 1390 | |
| 1391 | /** @tot_sent: amount of data sent/ACKed so far */ |
| 1392 | atomic64_t tot_sent; |
| 1393 | |
| 1394 | /** @dup_acks: duplicate ACKs counter */ |
| 1395 | atomic_t dup_acks; |
| 1396 | |
| 1397 | /** @fast_recovery: true if in Fast Recovery mode */ |
| 1398 | unsigned char fast_recovery:1; |
| 1399 | |
| 1400 | /** @recover: last sent seqno when entering Fast Recovery */ |
| 1401 | u32 recover; |
| 1402 | |
| 1403 | /** @rto: sender timeout */ |
| 1404 | u32 rto; |
| 1405 | |
| 1406 | /** @srtt: smoothed RTT scaled by 2^3 */ |
| 1407 | u32 srtt; |
| 1408 | |
| 1409 | /** @rttvar: RTT variation scaled by 2^2 */ |
| 1410 | u32 rttvar; |
| 1411 | |
| 1412 | /** |
| 1413 | * @more_bytes: waiting queue anchor when waiting for more ack/retry |
| 1414 | * timeout |
| 1415 | */ |
| 1416 | wait_queue_head_t more_bytes; |
| 1417 | |
| 1418 | /** @prerandom_offset: offset inside the prerandom buffer */ |
| 1419 | u32 prerandom_offset; |
| 1420 | |
| 1421 | /** @prerandom_lock: spinlock protecting access to prerandom_offset */ |
| 1422 | spinlock_t prerandom_lock; |
| 1423 | |
| 1424 | /* receiver variables */ |
| 1425 | |
| 1426 | /** @last_recv: last in-order received packet */ |
| 1427 | u32 last_recv; |
| 1428 | |
| 1429 | /** @unacked_list: list of unacked packets (meta-info only) */ |
| 1430 | struct list_head unacked_list; |
| 1431 | |
| 1432 | /** @unacked_lock: protect unacked_list */ |
| 1433 | spinlock_t unacked_lock; |
| 1434 | |
| 1435 | /** @last_recv_time: time time (jiffies) a msg was received */ |
| 1436 | unsigned long last_recv_time; |
| 1437 | |
| 1438 | /** @refcount: number of context where the object is used */ |
| 1439 | struct kref refcount; |
| 1440 | |
| 1441 | /** @rcu: struct used for freeing in an RCU-safe manner */ |
| 1442 | struct rcu_head rcu; |
| 1443 | }; |
| 1444 | |
| 1445 | /** |
| 1446 | * struct batadv_softif_vlan - per VLAN attributes set |
| 1447 | */ |
| 1448 | struct batadv_softif_vlan { |
| 1449 | /** @bat_priv: pointer to the mesh object */ |
| 1450 | struct batadv_priv *bat_priv; |
| 1451 | |
| 1452 | /** @vid: VLAN identifier */ |
| 1453 | unsigned short vid; |
| 1454 | |
| 1455 | /** @kobj: kobject for sysfs vlan subdirectory */ |
| 1456 | struct kobject *kobj; |
| 1457 | |
| 1458 | /** @ap_isolation: AP isolation state */ |
| 1459 | atomic_t ap_isolation; /* boolean */ |
| 1460 | |
| 1461 | /** @tt: TT private attributes (VLAN specific) */ |
| 1462 | struct batadv_vlan_tt tt; |
| 1463 | |
| 1464 | /** @list: list node for &bat_priv.softif_vlan_list */ |
| 1465 | struct hlist_node list; |
| 1466 | |
| 1467 | /** |
| 1468 | * @refcount: number of context where this object is currently in use |
| 1469 | */ |
| 1470 | struct kref refcount; |
| 1471 | |
| 1472 | /** @rcu: struct used for freeing in a RCU-safe manner */ |
| 1473 | struct rcu_head rcu; |
| 1474 | }; |
| 1475 | |
| 1476 | /** |
| 1477 | * struct batadv_priv_bat_v - B.A.T.M.A.N. V per soft-interface private data |
| 1478 | */ |
| 1479 | struct batadv_priv_bat_v { |
| 1480 | /** @ogm_buff: buffer holding the OGM packet */ |
| 1481 | unsigned char *ogm_buff; |
| 1482 | |
| 1483 | /** @ogm_buff_len: length of the OGM packet buffer */ |
| 1484 | int ogm_buff_len; |
| 1485 | |
| 1486 | /** @ogm_seqno: OGM sequence number - used to identify each OGM */ |
| 1487 | atomic_t ogm_seqno; |
| 1488 | |
| 1489 | /** @ogm_wq: workqueue used to schedule OGM transmissions */ |
| 1490 | struct delayed_work ogm_wq; |
| 1491 | }; |
| 1492 | |
| 1493 | /** |
| 1494 | * struct batadv_priv - per mesh interface data |
| 1495 | */ |
| 1496 | struct batadv_priv { |
| 1497 | /** |
| 1498 | * @mesh_state: current status of the mesh |
| 1499 | * (inactive/active/deactivating) |
| 1500 | */ |
| 1501 | atomic_t mesh_state; |
| 1502 | |
| 1503 | /** @soft_iface: net device which holds this struct as private data */ |
| 1504 | struct net_device *soft_iface; |
| 1505 | |
| 1506 | /** |
| 1507 | * @bat_counters: mesh internal traffic statistic counters (see |
| 1508 | * batadv_counters) |
| 1509 | */ |
| 1510 | u64 __percpu *bat_counters; /* Per cpu counters */ |
| 1511 | |
| 1512 | /** |
| 1513 | * @aggregated_ogms: bool indicating whether OGM aggregation is enabled |
| 1514 | */ |
| 1515 | atomic_t aggregated_ogms; |
| 1516 | |
| 1517 | /** @bonding: bool indicating whether traffic bonding is enabled */ |
| 1518 | atomic_t bonding; |
| 1519 | |
| 1520 | /** |
| 1521 | * @fragmentation: bool indicating whether traffic fragmentation is |
| 1522 | * enabled |
| 1523 | */ |
| 1524 | atomic_t fragmentation; |
| 1525 | |
| 1526 | /** |
| 1527 | * @packet_size_max: max packet size that can be transmitted via |
| 1528 | * multiple fragmented skbs or a single frame if fragmentation is |
| 1529 | * disabled |
| 1530 | */ |
| 1531 | atomic_t packet_size_max; |
| 1532 | |
| 1533 | /** |
| 1534 | * @frag_seqno: incremental counter to identify chains of egress |
| 1535 | * fragments |
| 1536 | */ |
| 1537 | atomic_t frag_seqno; |
| 1538 | |
| 1539 | #ifdef CONFIG_BATMAN_ADV_BLA |
| 1540 | /** |
| 1541 | * @bridge_loop_avoidance: bool indicating whether bridge loop |
| 1542 | * avoidance is enabled |
| 1543 | */ |
| 1544 | atomic_t bridge_loop_avoidance; |
| 1545 | #endif |
| 1546 | |
| 1547 | #ifdef CONFIG_BATMAN_ADV_DAT |
| 1548 | /** |
| 1549 | * @distributed_arp_table: bool indicating whether distributed ARP table |
| 1550 | * is enabled |
| 1551 | */ |
| 1552 | atomic_t distributed_arp_table; |
| 1553 | #endif |
| 1554 | |
| 1555 | #ifdef CONFIG_BATMAN_ADV_MCAST |
| 1556 | /** |
| 1557 | * @multicast_mode: Enable or disable multicast optimizations on this |
| 1558 | * node's sender/originating side |
| 1559 | */ |
| 1560 | atomic_t multicast_mode; |
| 1561 | |
| 1562 | /** |
| 1563 | * @multicast_fanout: Maximum number of packet copies to generate for a |
| 1564 | * multicast-to-unicast conversion |
| 1565 | */ |
| 1566 | atomic_t multicast_fanout; |
| 1567 | #endif |
| 1568 | |
| 1569 | /** @orig_interval: OGM broadcast interval in milliseconds */ |
| 1570 | atomic_t orig_interval; |
| 1571 | |
| 1572 | /** |
| 1573 | * @hop_penalty: penalty which will be applied to an OGM's tq-field on |
| 1574 | * every hop |
| 1575 | */ |
| 1576 | atomic_t hop_penalty; |
| 1577 | |
| 1578 | #ifdef CONFIG_BATMAN_ADV_DEBUG |
| 1579 | /** @log_level: configured log level (see batadv_dbg_level) */ |
| 1580 | atomic_t log_level; |
| 1581 | #endif |
| 1582 | |
| 1583 | /** |
| 1584 | * @isolation_mark: the skb->mark value used to match packets for AP |
| 1585 | * isolation |
| 1586 | */ |
| 1587 | u32 isolation_mark; |
| 1588 | |
| 1589 | /** |
| 1590 | * @isolation_mark_mask: bitmask identifying the bits in skb->mark to be |
| 1591 | * used for the isolation mark |
| 1592 | */ |
| 1593 | u32 isolation_mark_mask; |
| 1594 | |
| 1595 | /** @bcast_seqno: last sent broadcast packet sequence number */ |
| 1596 | atomic_t bcast_seqno; |
| 1597 | |
| 1598 | /** |
| 1599 | * @bcast_queue_left: number of remaining buffered broadcast packet |
| 1600 | * slots |
| 1601 | */ |
| 1602 | atomic_t bcast_queue_left; |
| 1603 | |
| 1604 | /** @batman_queue_left: number of remaining OGM packet slots */ |
| 1605 | atomic_t batman_queue_left; |
| 1606 | |
| 1607 | /** @mesh_obj: kobject for sysfs mesh subdirectory */ |
| 1608 | struct kobject *mesh_obj; |
| 1609 | |
| 1610 | #ifdef CONFIG_BATMAN_ADV_DEBUGFS |
| 1611 | /** @debug_dir: dentry for debugfs batman-adv subdirectory */ |
| 1612 | struct dentry *debug_dir; |
| 1613 | #endif |
| 1614 | |
| 1615 | /** @forw_bat_list: list of aggregated OGMs that will be forwarded */ |
| 1616 | struct hlist_head forw_bat_list; |
| 1617 | |
| 1618 | /** |
| 1619 | * @forw_bcast_list: list of broadcast packets that will be |
| 1620 | * rebroadcasted |
| 1621 | */ |
| 1622 | struct hlist_head forw_bcast_list; |
| 1623 | |
| 1624 | /** @tp_list: list of tp sessions */ |
| 1625 | struct hlist_head tp_list; |
| 1626 | |
| 1627 | /** @tp_num: number of currently active tp sessions */ |
| 1628 | struct batadv_hashtable *orig_hash; |
| 1629 | |
| 1630 | /** @orig_hash: hash table containing mesh participants (orig nodes) */ |
| 1631 | spinlock_t forw_bat_list_lock; |
| 1632 | |
| 1633 | /** @forw_bat_list_lock: lock protecting forw_bat_list */ |
| 1634 | spinlock_t forw_bcast_list_lock; |
| 1635 | |
| 1636 | /** @forw_bcast_list_lock: lock protecting forw_bcast_list */ |
| 1637 | spinlock_t tp_list_lock; |
| 1638 | |
| 1639 | /** @tp_list_lock: spinlock protecting @tp_list */ |
| 1640 | atomic_t tp_num; |
| 1641 | |
| 1642 | /** @orig_work: work queue callback item for orig node purging */ |
| 1643 | struct delayed_work orig_work; |
| 1644 | |
| 1645 | /** |
| 1646 | * @primary_if: one of the hard-interfaces assigned to this mesh |
| 1647 | * interface becomes the primary interface |
| 1648 | */ |
| 1649 | struct batadv_hard_iface __rcu *primary_if; /* rcu protected pointer */ |
| 1650 | |
| 1651 | /** @algo_ops: routing algorithm used by this mesh interface */ |
| 1652 | struct batadv_algo_ops *algo_ops; |
| 1653 | |
| 1654 | /** |
| 1655 | * @softif_vlan_list: a list of softif_vlan structs, one per VLAN |
| 1656 | * created on top of the mesh interface represented by this object |
| 1657 | */ |
| 1658 | struct hlist_head softif_vlan_list; |
| 1659 | |
| 1660 | /** @softif_vlan_list_lock: lock protecting softif_vlan_list */ |
| 1661 | spinlock_t softif_vlan_list_lock; |
| 1662 | |
| 1663 | #ifdef CONFIG_BATMAN_ADV_BLA |
| 1664 | /** @bla: bridge loope avoidance data */ |
| 1665 | struct batadv_priv_bla bla; |
| 1666 | #endif |
| 1667 | |
| 1668 | #ifdef CONFIG_BATMAN_ADV_DEBUG |
| 1669 | /** @debug_log: holding debug logging relevant data */ |
| 1670 | struct batadv_priv_debug_log *debug_log; |
| 1671 | #endif |
| 1672 | |
| 1673 | /** @gw: gateway data */ |
| 1674 | struct batadv_priv_gw gw; |
| 1675 | |
| 1676 | /** @tt: translation table data */ |
| 1677 | struct batadv_priv_tt tt; |
| 1678 | |
| 1679 | /** @tvlv: type-version-length-value data */ |
| 1680 | struct batadv_priv_tvlv tvlv; |
| 1681 | |
| 1682 | #ifdef CONFIG_BATMAN_ADV_DAT |
| 1683 | /** @dat: distributed arp table data */ |
| 1684 | struct batadv_priv_dat dat; |
| 1685 | #endif |
| 1686 | |
| 1687 | #ifdef CONFIG_BATMAN_ADV_MCAST |
| 1688 | /** @mcast: multicast data */ |
| 1689 | struct batadv_priv_mcast mcast; |
| 1690 | #endif |
| 1691 | |
| 1692 | #ifdef CONFIG_BATMAN_ADV_NC |
| 1693 | /** |
| 1694 | * @network_coding: bool indicating whether network coding is enabled |
| 1695 | */ |
| 1696 | atomic_t network_coding; |
| 1697 | |
| 1698 | /** @nc: network coding data */ |
| 1699 | struct batadv_priv_nc nc; |
| 1700 | #endif /* CONFIG_BATMAN_ADV_NC */ |
| 1701 | |
| 1702 | #ifdef CONFIG_BATMAN_ADV_BATMAN_V |
| 1703 | /** @bat_v: B.A.T.M.A.N. V per soft-interface private data */ |
| 1704 | struct batadv_priv_bat_v bat_v; |
| 1705 | #endif |
| 1706 | }; |
| 1707 | |
| 1708 | /** |
| 1709 | * struct batadv_socket_client - layer2 icmp socket client data |
| 1710 | */ |
| 1711 | struct batadv_socket_client { |
| 1712 | /** |
| 1713 | * @queue_list: packet queue for packets destined for this socket client |
| 1714 | */ |
| 1715 | struct list_head queue_list; |
| 1716 | |
| 1717 | /** @queue_len: number of packets in the packet queue (queue_list) */ |
| 1718 | unsigned int queue_len; |
| 1719 | |
| 1720 | /** @index: socket client's index in the batadv_socket_client_hash */ |
| 1721 | unsigned char index; |
| 1722 | |
| 1723 | /** @lock: lock protecting queue_list, queue_len & index */ |
| 1724 | spinlock_t lock; |
| 1725 | |
| 1726 | /** @queue_wait: socket client's wait queue */ |
| 1727 | wait_queue_head_t queue_wait; |
| 1728 | |
| 1729 | /** @bat_priv: pointer to soft_iface this client belongs to */ |
| 1730 | struct batadv_priv *bat_priv; |
| 1731 | }; |
| 1732 | |
| 1733 | /** |
| 1734 | * struct batadv_socket_packet - layer2 icmp packet for socket client |
| 1735 | */ |
| 1736 | struct batadv_socket_packet { |
| 1737 | /** @list: list node for &batadv_socket_client.queue_list */ |
| 1738 | struct list_head list; |
| 1739 | |
| 1740 | /** @icmp_len: size of the layer2 icmp packet */ |
| 1741 | size_t icmp_len; |
| 1742 | |
| 1743 | /** @icmp_packet: layer2 icmp packet */ |
| 1744 | u8 icmp_packet[BATADV_ICMP_MAX_PACKET_SIZE]; |
| 1745 | }; |
| 1746 | |
| 1747 | #ifdef CONFIG_BATMAN_ADV_BLA |
| 1748 | |
| 1749 | /** |
| 1750 | * struct batadv_bla_backbone_gw - batman-adv gateway bridged into the LAN |
| 1751 | */ |
| 1752 | struct batadv_bla_backbone_gw { |
| 1753 | /** |
| 1754 | * @orig: originator address of backbone node (mac address of primary |
| 1755 | * iface) |
| 1756 | */ |
| 1757 | u8 orig[ETH_ALEN]; |
| 1758 | |
| 1759 | /** @vid: vlan id this gateway was detected on */ |
| 1760 | unsigned short vid; |
| 1761 | |
| 1762 | /** @hash_entry: hlist node for &batadv_priv_bla.backbone_hash */ |
| 1763 | struct hlist_node hash_entry; |
| 1764 | |
| 1765 | /** @bat_priv: pointer to soft_iface this backbone gateway belongs to */ |
| 1766 | struct batadv_priv *bat_priv; |
| 1767 | |
| 1768 | /** @lasttime: last time we heard of this backbone gw */ |
| 1769 | unsigned long lasttime; |
| 1770 | |
| 1771 | /** |
| 1772 | * @wait_periods: grace time for bridge forward delays and bla group |
| 1773 | * forming at bootup phase - no bcast traffic is formwared until it has |
| 1774 | * elapsed |
| 1775 | */ |
| 1776 | atomic_t wait_periods; |
| 1777 | |
| 1778 | /** |
| 1779 | * @request_sent: if this bool is set to true we are out of sync with |
| 1780 | * this backbone gateway - no bcast traffic is formwared until the |
| 1781 | * situation was resolved |
| 1782 | */ |
| 1783 | atomic_t request_sent; |
| 1784 | |
| 1785 | /** @crc: crc16 checksum over all claims */ |
| 1786 | u16 crc; |
| 1787 | |
| 1788 | /** @crc_lock: lock protecting crc */ |
| 1789 | spinlock_t crc_lock; |
| 1790 | |
| 1791 | /** @report_work: work struct for reporting detected loops */ |
| 1792 | struct work_struct report_work; |
| 1793 | |
| 1794 | /** @refcount: number of contexts the object is used */ |
| 1795 | struct kref refcount; |
| 1796 | |
| 1797 | /** @rcu: struct used for freeing in an RCU-safe manner */ |
| 1798 | struct rcu_head rcu; |
| 1799 | }; |
| 1800 | |
| 1801 | /** |
| 1802 | * struct batadv_bla_claim - claimed non-mesh client structure |
| 1803 | */ |
| 1804 | struct batadv_bla_claim { |
| 1805 | /** @addr: mac address of claimed non-mesh client */ |
| 1806 | u8 addr[ETH_ALEN]; |
| 1807 | |
| 1808 | /** @vid: vlan id this client was detected on */ |
| 1809 | unsigned short vid; |
| 1810 | |
| 1811 | /** @backbone_gw: pointer to backbone gw claiming this client */ |
| 1812 | struct batadv_bla_backbone_gw *backbone_gw; |
| 1813 | |
| 1814 | /** @backbone_lock: lock protecting backbone_gw pointer */ |
| 1815 | spinlock_t backbone_lock; |
| 1816 | |
| 1817 | /** @lasttime: last time we heard of claim (locals only) */ |
| 1818 | unsigned long lasttime; |
| 1819 | |
| 1820 | /** @hash_entry: hlist node for &batadv_priv_bla.claim_hash */ |
| 1821 | struct hlist_node hash_entry; |
| 1822 | |
| 1823 | /** @refcount: number of contexts the object is used */ |
| 1824 | struct rcu_head rcu; |
| 1825 | |
| 1826 | /** @rcu: struct used for freeing in an RCU-safe manner */ |
| 1827 | struct kref refcount; |
| 1828 | }; |
| 1829 | #endif |
| 1830 | |
| 1831 | /** |
| 1832 | * struct batadv_tt_common_entry - tt local & tt global common data |
| 1833 | */ |
| 1834 | struct batadv_tt_common_entry { |
| 1835 | /** @addr: mac address of non-mesh client */ |
| 1836 | u8 addr[ETH_ALEN]; |
| 1837 | |
| 1838 | /** @vid: VLAN identifier */ |
| 1839 | unsigned short vid; |
| 1840 | |
| 1841 | /** |
| 1842 | * @hash_entry: hlist node for &batadv_priv_tt.local_hash or for |
| 1843 | * &batadv_priv_tt.global_hash |
| 1844 | */ |
| 1845 | struct hlist_node hash_entry; |
| 1846 | |
| 1847 | /** @flags: various state handling flags (see batadv_tt_client_flags) */ |
| 1848 | u16 flags; |
| 1849 | |
| 1850 | /** @added_at: timestamp used for purging stale tt common entries */ |
| 1851 | unsigned long added_at; |
| 1852 | |
| 1853 | /** @refcount: number of contexts the object is used */ |
| 1854 | struct kref refcount; |
| 1855 | |
| 1856 | /** @rcu: struct used for freeing in an RCU-safe manner */ |
| 1857 | struct rcu_head rcu; |
| 1858 | }; |
| 1859 | |
| 1860 | /** |
| 1861 | * struct batadv_tt_local_entry - translation table local entry data |
| 1862 | */ |
| 1863 | struct batadv_tt_local_entry { |
| 1864 | /** @common: general translation table data */ |
| 1865 | struct batadv_tt_common_entry common; |
| 1866 | |
| 1867 | /** @last_seen: timestamp used for purging stale tt local entries */ |
| 1868 | unsigned long last_seen; |
| 1869 | |
| 1870 | /** @vlan: soft-interface vlan of the entry */ |
| 1871 | struct batadv_softif_vlan *vlan; |
| 1872 | }; |
| 1873 | |
| 1874 | /** |
| 1875 | * struct batadv_tt_global_entry - translation table global entry data |
| 1876 | */ |
| 1877 | struct batadv_tt_global_entry { |
| 1878 | /** @common: general translation table data */ |
| 1879 | struct batadv_tt_common_entry common; |
| 1880 | |
| 1881 | /** @orig_list: list of orig nodes announcing this non-mesh client */ |
| 1882 | struct hlist_head orig_list; |
| 1883 | |
| 1884 | /** @orig_list_count: number of items in the orig_list */ |
| 1885 | atomic_t orig_list_count; |
| 1886 | |
| 1887 | /** @list_lock: lock protecting orig_list */ |
| 1888 | spinlock_t list_lock; |
| 1889 | |
| 1890 | /** @roam_at: time at which TT_GLOBAL_ROAM was set */ |
| 1891 | unsigned long roam_at; |
| 1892 | }; |
| 1893 | |
| 1894 | /** |
| 1895 | * struct batadv_tt_orig_list_entry - orig node announcing a non-mesh client |
| 1896 | */ |
| 1897 | struct batadv_tt_orig_list_entry { |
| 1898 | /** @orig_node: pointer to orig node announcing this non-mesh client */ |
| 1899 | struct batadv_orig_node *orig_node; |
| 1900 | |
| 1901 | /** |
| 1902 | * @ttvn: translation table version number which added the non-mesh |
| 1903 | * client |
| 1904 | */ |
| 1905 | u8 ttvn; |
| 1906 | |
| 1907 | /** @flags: per orig entry TT sync flags */ |
| 1908 | u8 flags; |
| 1909 | |
| 1910 | /** @list: list node for &batadv_tt_global_entry.orig_list */ |
| 1911 | struct hlist_node list; |
| 1912 | |
| 1913 | /** @refcount: number of contexts the object is used */ |
| 1914 | struct kref refcount; |
| 1915 | |
| 1916 | /** @rcu: struct used for freeing in an RCU-safe manner */ |
| 1917 | struct rcu_head rcu; |
| 1918 | }; |
| 1919 | |
| 1920 | /** |
| 1921 | * struct batadv_tt_change_node - structure for tt changes occurred |
| 1922 | */ |
| 1923 | struct batadv_tt_change_node { |
| 1924 | /** @list: list node for &batadv_priv_tt.changes_list */ |
| 1925 | struct list_head list; |
| 1926 | |
| 1927 | /** @change: holds the actual translation table diff data */ |
| 1928 | struct batadv_tvlv_tt_change change; |
| 1929 | }; |
| 1930 | |
| 1931 | /** |
| 1932 | * struct batadv_tt_req_node - data to keep track of the tt requests in flight |
| 1933 | */ |
| 1934 | struct batadv_tt_req_node { |
| 1935 | /** |
| 1936 | * @addr: mac address address of the originator this request was sent to |
| 1937 | */ |
| 1938 | u8 addr[ETH_ALEN]; |
| 1939 | |
| 1940 | /** @issued_at: timestamp used for purging stale tt requests */ |
| 1941 | unsigned long issued_at; |
| 1942 | |
| 1943 | /** @refcount: number of contexts the object is used by */ |
| 1944 | struct kref refcount; |
| 1945 | |
| 1946 | /** @list: list node for &batadv_priv_tt.req_list */ |
| 1947 | struct hlist_node list; |
| 1948 | }; |
| 1949 | |
| 1950 | /** |
| 1951 | * struct batadv_tt_roam_node - roaming client data |
| 1952 | */ |
| 1953 | struct batadv_tt_roam_node { |
| 1954 | /** @addr: mac address of the client in the roaming phase */ |
| 1955 | u8 addr[ETH_ALEN]; |
| 1956 | |
| 1957 | /** |
| 1958 | * @counter: number of allowed roaming events per client within a single |
| 1959 | * OGM interval (changes are committed with each OGM) |
| 1960 | */ |
| 1961 | atomic_t counter; |
| 1962 | |
| 1963 | /** |
| 1964 | * @first_time: timestamp used for purging stale roaming node entries |
| 1965 | */ |
| 1966 | unsigned long first_time; |
| 1967 | |
| 1968 | /** @list: list node for &batadv_priv_tt.roam_list */ |
| 1969 | struct list_head list; |
| 1970 | }; |
| 1971 | |
| 1972 | /** |
| 1973 | * struct batadv_nc_node - network coding node |
| 1974 | */ |
| 1975 | struct batadv_nc_node { |
| 1976 | /** @list: next and prev pointer for the list handling */ |
| 1977 | struct list_head list; |
| 1978 | |
| 1979 | /** @addr: the node's mac address */ |
| 1980 | u8 addr[ETH_ALEN]; |
| 1981 | |
| 1982 | /** @refcount: number of contexts the object is used by */ |
| 1983 | struct kref refcount; |
| 1984 | |
| 1985 | /** @rcu: struct used for freeing in an RCU-safe manner */ |
| 1986 | struct rcu_head rcu; |
| 1987 | |
| 1988 | /** @orig_node: pointer to corresponding orig node struct */ |
| 1989 | struct batadv_orig_node *orig_node; |
| 1990 | |
| 1991 | /** @last_seen: timestamp of last ogm received from this node */ |
| 1992 | unsigned long last_seen; |
| 1993 | }; |
| 1994 | |
| 1995 | /** |
| 1996 | * struct batadv_nc_path - network coding path |
| 1997 | */ |
| 1998 | struct batadv_nc_path { |
| 1999 | /** @hash_entry: next and prev pointer for the list handling */ |
| 2000 | struct hlist_node hash_entry; |
| 2001 | |
| 2002 | /** @rcu: struct used for freeing in an RCU-safe manner */ |
| 2003 | struct rcu_head rcu; |
| 2004 | |
| 2005 | /** @refcount: number of contexts the object is used by */ |
| 2006 | struct kref refcount; |
| 2007 | |
| 2008 | /** @packet_list: list of buffered packets for this path */ |
| 2009 | struct list_head packet_list; |
| 2010 | |
| 2011 | /** @packet_list_lock: access lock for packet list */ |
| 2012 | spinlock_t packet_list_lock; |
| 2013 | |
| 2014 | /** @next_hop: next hop (destination) of path */ |
| 2015 | u8 next_hop[ETH_ALEN]; |
| 2016 | |
| 2017 | /** @prev_hop: previous hop (source) of path */ |
| 2018 | u8 prev_hop[ETH_ALEN]; |
| 2019 | |
| 2020 | /** @last_valid: timestamp for last validation of path */ |
| 2021 | unsigned long last_valid; |
| 2022 | }; |
| 2023 | |
| 2024 | /** |
| 2025 | * struct batadv_nc_packet - network coding packet used when coding and |
| 2026 | * decoding packets |
| 2027 | */ |
| 2028 | struct batadv_nc_packet { |
| 2029 | /** @list: next and prev pointer for the list handling */ |
| 2030 | struct list_head list; |
| 2031 | |
| 2032 | /** @packet_id: crc32 checksum of skb data */ |
| 2033 | __be32 packet_id; |
| 2034 | |
| 2035 | /** |
| 2036 | * @timestamp: field containing the info when the packet was added to |
| 2037 | * path |
| 2038 | */ |
| 2039 | unsigned long timestamp; |
| 2040 | |
| 2041 | /** @neigh_node: pointer to original next hop neighbor of skb */ |
| 2042 | struct batadv_neigh_node *neigh_node; |
| 2043 | |
| 2044 | /** @skb: skb which can be encoded or used for decoding */ |
| 2045 | struct sk_buff *skb; |
| 2046 | |
| 2047 | /** @nc_path: pointer to path this nc packet is attached to */ |
| 2048 | struct batadv_nc_path *nc_path; |
| 2049 | }; |
| 2050 | |
| 2051 | /** |
| 2052 | * struct batadv_skb_cb - control buffer structure used to store private data |
| 2053 | * relevant to batman-adv in the skb->cb buffer in skbs. |
| 2054 | */ |
| 2055 | struct batadv_skb_cb { |
| 2056 | /** |
| 2057 | * @decoded: Marks a skb as decoded, which is checked when searching for |
| 2058 | * coding opportunities in network-coding.c |
| 2059 | */ |
| 2060 | unsigned char decoded:1; |
| 2061 | |
| 2062 | /** @num_bcasts: Counter for broadcast packet retransmissions */ |
| 2063 | unsigned char num_bcasts; |
| 2064 | }; |
| 2065 | |
| 2066 | /** |
| 2067 | * struct batadv_forw_packet - structure for bcast packets to be sent/forwarded |
| 2068 | */ |
| 2069 | struct batadv_forw_packet { |
| 2070 | /** |
| 2071 | * @list: list node for &batadv_priv.forw.bcast_list and |
| 2072 | * &batadv_priv.forw.bat_list |
| 2073 | */ |
| 2074 | struct hlist_node list; |
| 2075 | |
| 2076 | /** @cleanup_list: list node for purging functions */ |
| 2077 | struct hlist_node cleanup_list; |
| 2078 | |
| 2079 | /** @send_time: execution time for delayed_work (packet sending) */ |
| 2080 | unsigned long send_time; |
| 2081 | |
| 2082 | /** |
| 2083 | * @own: bool for locally generated packets (local OGMs are re-scheduled |
| 2084 | * after sending) |
| 2085 | */ |
| 2086 | u8 own; |
| 2087 | |
| 2088 | /** @skb: bcast packet's skb buffer */ |
| 2089 | struct sk_buff *skb; |
| 2090 | |
| 2091 | /** @packet_len: size of aggregated OGM packet inside the skb buffer */ |
| 2092 | u16 packet_len; |
| 2093 | |
| 2094 | /** @direct_link_flags: direct link flags for aggregated OGM packets */ |
| 2095 | u32 direct_link_flags; |
| 2096 | |
| 2097 | /** @num_packets: counter for aggregated OGMv1 packets */ |
| 2098 | u8 num_packets; |
| 2099 | |
| 2100 | /** @delayed_work: work queue callback item for packet sending */ |
| 2101 | struct delayed_work delayed_work; |
| 2102 | |
| 2103 | /** |
| 2104 | * @if_incoming: pointer to incoming hard-iface or primary iface if |
| 2105 | * locally generated packet |
| 2106 | */ |
| 2107 | struct batadv_hard_iface *if_incoming; |
| 2108 | |
| 2109 | /** |
| 2110 | * @if_outgoing: packet where the packet should be sent to, or NULL if |
| 2111 | * unspecified |
| 2112 | */ |
| 2113 | struct batadv_hard_iface *if_outgoing; |
| 2114 | |
| 2115 | /** @queue_left: The queue (counter) this packet was applied to */ |
| 2116 | atomic_t *queue_left; |
| 2117 | }; |
| 2118 | |
| 2119 | /** |
| 2120 | * struct batadv_algo_iface_ops - mesh algorithm callbacks (interface specific) |
| 2121 | */ |
| 2122 | struct batadv_algo_iface_ops { |
| 2123 | /** |
| 2124 | * @activate: start routing mechanisms when hard-interface is brought up |
| 2125 | * (optional) |
| 2126 | */ |
| 2127 | void (*activate)(struct batadv_hard_iface *hard_iface); |
| 2128 | |
| 2129 | /** @enable: init routing info when hard-interface is enabled */ |
| 2130 | int (*enable)(struct batadv_hard_iface *hard_iface); |
| 2131 | |
| 2132 | /** @disable: de-init routing info when hard-interface is disabled */ |
| 2133 | void (*disable)(struct batadv_hard_iface *hard_iface); |
| 2134 | |
| 2135 | /** |
| 2136 | * @update_mac: (re-)init mac addresses of the protocol information |
| 2137 | * belonging to this hard-interface |
| 2138 | */ |
| 2139 | void (*update_mac)(struct batadv_hard_iface *hard_iface); |
| 2140 | |
| 2141 | /** @primary_set: called when primary interface is selected / changed */ |
| 2142 | void (*primary_set)(struct batadv_hard_iface *hard_iface); |
| 2143 | }; |
| 2144 | |
| 2145 | /** |
| 2146 | * struct batadv_algo_neigh_ops - mesh algorithm callbacks (neighbour specific) |
| 2147 | */ |
| 2148 | struct batadv_algo_neigh_ops { |
| 2149 | /** @hardif_init: called on creation of single hop entry (optional) */ |
| 2150 | void (*hardif_init)(struct batadv_hardif_neigh_node *neigh); |
| 2151 | |
| 2152 | /** |
| 2153 | * @cmp: compare the metrics of two neighbors for their respective |
| 2154 | * outgoing interfaces |
| 2155 | */ |
| 2156 | int (*cmp)(struct batadv_neigh_node *neigh1, |
| 2157 | struct batadv_hard_iface *if_outgoing1, |
| 2158 | struct batadv_neigh_node *neigh2, |
| 2159 | struct batadv_hard_iface *if_outgoing2); |
| 2160 | |
| 2161 | /** |
| 2162 | * @is_similar_or_better: check if neigh1 is equally similar or better |
| 2163 | * than neigh2 for their respective outgoing interface from the metric |
| 2164 | * prospective |
| 2165 | */ |
| 2166 | bool (*is_similar_or_better)(struct batadv_neigh_node *neigh1, |
| 2167 | struct batadv_hard_iface *if_outgoing1, |
| 2168 | struct batadv_neigh_node *neigh2, |
| 2169 | struct batadv_hard_iface *if_outgoing2); |
| 2170 | |
| 2171 | #ifdef CONFIG_BATMAN_ADV_DEBUGFS |
| 2172 | /** @print: print the single hop neighbor list (optional) */ |
| 2173 | void (*print)(struct batadv_priv *priv, struct seq_file *seq); |
| 2174 | #endif |
| 2175 | |
| 2176 | /** @dump: dump neighbors to a netlink socket (optional) */ |
| 2177 | void (*dump)(struct sk_buff *msg, struct netlink_callback *cb, |
| 2178 | struct batadv_priv *priv, |
| 2179 | struct batadv_hard_iface *hard_iface); |
| 2180 | }; |
| 2181 | |
| 2182 | /** |
| 2183 | * struct batadv_algo_orig_ops - mesh algorithm callbacks (originator specific) |
| 2184 | */ |
| 2185 | struct batadv_algo_orig_ops { |
| 2186 | #ifdef CONFIG_BATMAN_ADV_DEBUGFS |
| 2187 | /** @print: print the originator table (optional) */ |
| 2188 | void (*print)(struct batadv_priv *priv, struct seq_file *seq, |
| 2189 | struct batadv_hard_iface *hard_iface); |
| 2190 | #endif |
| 2191 | |
| 2192 | /** @dump: dump originators to a netlink socket (optional) */ |
| 2193 | void (*dump)(struct sk_buff *msg, struct netlink_callback *cb, |
| 2194 | struct batadv_priv *priv, |
| 2195 | struct batadv_hard_iface *hard_iface); |
| 2196 | }; |
| 2197 | |
| 2198 | /** |
| 2199 | * struct batadv_algo_gw_ops - mesh algorithm callbacks (GW specific) |
| 2200 | */ |
| 2201 | struct batadv_algo_gw_ops { |
| 2202 | /** @init_sel_class: initialize GW selection class (optional) */ |
| 2203 | void (*init_sel_class)(struct batadv_priv *bat_priv); |
| 2204 | |
| 2205 | /** |
| 2206 | * @store_sel_class: parse and stores a new GW selection class |
| 2207 | * (optional) |
| 2208 | */ |
| 2209 | ssize_t (*store_sel_class)(struct batadv_priv *bat_priv, char *buff, |
| 2210 | size_t count); |
| 2211 | |
| 2212 | /** @show_sel_class: prints the current GW selection class (optional) */ |
| 2213 | ssize_t (*show_sel_class)(struct batadv_priv *bat_priv, char *buff); |
| 2214 | |
| 2215 | /** |
| 2216 | * @get_best_gw_node: select the best GW from the list of available |
| 2217 | * nodes (optional) |
| 2218 | */ |
| 2219 | struct batadv_gw_node *(*get_best_gw_node) |
| 2220 | (struct batadv_priv *bat_priv); |
| 2221 | |
| 2222 | /** |
| 2223 | * @is_eligible: check if a newly discovered GW is a potential candidate |
| 2224 | * for the election as best GW (optional) |
| 2225 | */ |
| 2226 | bool (*is_eligible)(struct batadv_priv *bat_priv, |
| 2227 | struct batadv_orig_node *curr_gw_orig, |
| 2228 | struct batadv_orig_node *orig_node); |
| 2229 | |
| 2230 | #ifdef CONFIG_BATMAN_ADV_DEBUGFS |
| 2231 | /** @print: print the gateway table (optional) */ |
| 2232 | void (*print)(struct batadv_priv *bat_priv, struct seq_file *seq); |
| 2233 | #endif |
| 2234 | |
| 2235 | /** @dump: dump gateways to a netlink socket (optional) */ |
| 2236 | void (*dump)(struct sk_buff *msg, struct netlink_callback *cb, |
| 2237 | struct batadv_priv *priv); |
| 2238 | }; |
| 2239 | |
| 2240 | /** |
| 2241 | * struct batadv_algo_ops - mesh algorithm callbacks |
| 2242 | */ |
| 2243 | struct batadv_algo_ops { |
| 2244 | /** @list: list node for the batadv_algo_list */ |
| 2245 | struct hlist_node list; |
| 2246 | |
| 2247 | /** @name: name of the algorithm */ |
| 2248 | char *name; |
| 2249 | |
| 2250 | /** @iface: callbacks related to interface handling */ |
| 2251 | struct batadv_algo_iface_ops iface; |
| 2252 | |
| 2253 | /** @neigh: callbacks related to neighbors handling */ |
| 2254 | struct batadv_algo_neigh_ops neigh; |
| 2255 | |
| 2256 | /** @orig: callbacks related to originators handling */ |
| 2257 | struct batadv_algo_orig_ops orig; |
| 2258 | |
| 2259 | /** @gw: callbacks related to GW mode */ |
| 2260 | struct batadv_algo_gw_ops gw; |
| 2261 | }; |
| 2262 | |
| 2263 | /** |
| 2264 | * struct batadv_dat_entry - it is a single entry of batman-adv ARP backend. It |
| 2265 | * is used to stored ARP entries needed for the global DAT cache |
| 2266 | */ |
| 2267 | struct batadv_dat_entry { |
| 2268 | /** @ip: the IPv4 corresponding to this DAT/ARP entry */ |
| 2269 | __be32 ip; |
| 2270 | |
| 2271 | /** @mac_addr: the MAC address associated to the stored IPv4 */ |
| 2272 | u8 mac_addr[ETH_ALEN]; |
| 2273 | |
| 2274 | /** @vid: the vlan ID associated to this entry */ |
| 2275 | unsigned short vid; |
| 2276 | |
| 2277 | /** |
| 2278 | * @last_update: time in jiffies when this entry was refreshed last time |
| 2279 | */ |
| 2280 | unsigned long last_update; |
| 2281 | |
| 2282 | /** @hash_entry: hlist node for &batadv_priv_dat.hash */ |
| 2283 | struct hlist_node hash_entry; |
| 2284 | |
| 2285 | /** @refcount: number of contexts the object is used */ |
| 2286 | struct kref refcount; |
| 2287 | |
| 2288 | /** @rcu: struct used for freeing in an RCU-safe manner */ |
| 2289 | struct rcu_head rcu; |
| 2290 | }; |
| 2291 | |
| 2292 | /** |
| 2293 | * struct batadv_hw_addr - a list entry for a MAC address |
| 2294 | */ |
| 2295 | struct batadv_hw_addr { |
| 2296 | /** @list: list node for the linking of entries */ |
| 2297 | struct hlist_node list; |
| 2298 | |
| 2299 | /** @addr: the MAC address of this list entry */ |
| 2300 | unsigned char addr[ETH_ALEN]; |
| 2301 | }; |
| 2302 | |
| 2303 | /** |
| 2304 | * struct batadv_dat_candidate - candidate destination for DAT operations |
| 2305 | */ |
| 2306 | struct batadv_dat_candidate { |
| 2307 | /** |
| 2308 | * @type: the type of the selected candidate. It can one of the |
| 2309 | * following: |
| 2310 | * - BATADV_DAT_CANDIDATE_NOT_FOUND |
| 2311 | * - BATADV_DAT_CANDIDATE_ORIG |
| 2312 | */ |
| 2313 | int type; |
| 2314 | |
| 2315 | /** |
| 2316 | * @orig_node: if type is BATADV_DAT_CANDIDATE_ORIG this field points to |
| 2317 | * the corresponding originator node structure |
| 2318 | */ |
| 2319 | struct batadv_orig_node *orig_node; |
| 2320 | }; |
| 2321 | |
| 2322 | /** |
| 2323 | * struct batadv_tvlv_container - container for tvlv appended to OGMs |
| 2324 | */ |
| 2325 | struct batadv_tvlv_container { |
| 2326 | /** @list: hlist node for &batadv_priv_tvlv.container_list */ |
| 2327 | struct hlist_node list; |
| 2328 | |
| 2329 | /** @tvlv_hdr: tvlv header information needed to construct the tvlv */ |
| 2330 | struct batadv_tvlv_hdr tvlv_hdr; |
| 2331 | |
| 2332 | /** @refcount: number of contexts the object is used */ |
| 2333 | struct kref refcount; |
| 2334 | }; |
| 2335 | |
| 2336 | /** |
| 2337 | * struct batadv_tvlv_handler - handler for specific tvlv type and version |
| 2338 | */ |
| 2339 | struct batadv_tvlv_handler { |
| 2340 | /** @list: hlist node for &batadv_priv_tvlv.handler_list */ |
| 2341 | struct hlist_node list; |
| 2342 | |
| 2343 | /** |
| 2344 | * @ogm_handler: handler callback which is given the tvlv payload to |
| 2345 | * process on incoming OGM packets |
| 2346 | */ |
| 2347 | void (*ogm_handler)(struct batadv_priv *bat_priv, |
| 2348 | struct batadv_orig_node *orig, |
| 2349 | u8 flags, void *tvlv_value, u16 tvlv_value_len); |
| 2350 | |
| 2351 | /** |
| 2352 | * @unicast_handler: handler callback which is given the tvlv payload to |
| 2353 | * process on incoming unicast tvlv packets |
| 2354 | */ |
| 2355 | int (*unicast_handler)(struct batadv_priv *bat_priv, |
| 2356 | u8 *src, u8 *dst, |
| 2357 | void *tvlv_value, u16 tvlv_value_len); |
| 2358 | |
| 2359 | /** @type: tvlv type this handler feels responsible for */ |
| 2360 | u8 type; |
| 2361 | |
| 2362 | /** @version: tvlv version this handler feels responsible for */ |
| 2363 | u8 version; |
| 2364 | |
| 2365 | /** @flags: tvlv handler flags */ |
| 2366 | u8 flags; |
| 2367 | |
| 2368 | /** @refcount: number of contexts the object is used */ |
| 2369 | struct kref refcount; |
| 2370 | |
| 2371 | /** @rcu: struct used for freeing in an RCU-safe manner */ |
| 2372 | struct rcu_head rcu; |
| 2373 | }; |
| 2374 | |
| 2375 | /** |
| 2376 | * enum batadv_tvlv_handler_flags - tvlv handler flags definitions |
| 2377 | */ |
| 2378 | enum batadv_tvlv_handler_flags { |
| 2379 | /** |
| 2380 | * @BATADV_TVLV_HANDLER_OGM_CIFNOTFND: tvlv ogm processing function |
| 2381 | * will call this handler even if its type was not found (with no data) |
| 2382 | */ |
| 2383 | BATADV_TVLV_HANDLER_OGM_CIFNOTFND = BIT(1), |
| 2384 | |
| 2385 | /** |
| 2386 | * @BATADV_TVLV_HANDLER_OGM_CALLED: interval tvlv handling flag - the |
| 2387 | * API marks a handler as being called, so it won't be called if the |
| 2388 | * BATADV_TVLV_HANDLER_OGM_CIFNOTFND flag was set |
| 2389 | */ |
| 2390 | BATADV_TVLV_HANDLER_OGM_CALLED = BIT(2), |
| 2391 | }; |
| 2392 | |
| 2393 | /** |
| 2394 | * struct batadv_store_mesh_work - Work queue item to detach add/del interface |
| 2395 | * from sysfs locks |
| 2396 | */ |
| 2397 | struct batadv_store_mesh_work { |
| 2398 | /** |
| 2399 | * @net_dev: netdevice to add/remove to/from batman-adv soft-interface |
| 2400 | */ |
| 2401 | struct net_device *net_dev; |
| 2402 | |
| 2403 | /** @soft_iface_name: name of soft-interface to modify */ |
| 2404 | char soft_iface_name[IFNAMSIZ]; |
| 2405 | |
| 2406 | /** @work: work queue item */ |
| 2407 | struct work_struct work; |
| 2408 | }; |
| 2409 | |
| 2410 | #endif /* _NET_BATMAN_ADV_TYPES_H_ */ |