1 /* Copyright (C) 2007-2013 B.A.T.M.A.N. contributors:
3 * Marek Lindner, Simon Wunderlich
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of version 2 of the GNU General Public
7 * License as published by the Free Software Foundation.
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
20 #ifndef _NET_BATMAN_ADV_TYPES_H_
21 #define _NET_BATMAN_ADV_TYPES_H_
25 #include <linux/kernel.h>
27 #ifdef CONFIG_BATMAN_ADV_DAT
29 /* batadv_dat_addr_t is the type used for all DHT addresses. If it is changed,
30 * BATADV_DAT_ADDR_MAX is changed as well.
32 * *Please be careful: batadv_dat_addr_t must be UNSIGNED*
34 #define batadv_dat_addr_t uint16_t
36 #endif /* CONFIG_BATMAN_ADV_DAT */
39 * struct batadv_hard_iface_bat_iv - per hard interface B.A.T.M.A.N. IV data
40 * @ogm_buff: buffer holding the OGM packet
41 * @ogm_buff_len: length of the OGM packet buffer
42 * @ogm_seqno: OGM sequence number - used to identify each OGM
44 struct batadv_hard_iface_bat_iv {
45 unsigned char *ogm_buff;
51 * struct batadv_hard_iface - network device known to batman-adv
52 * @list: list node for batadv_hardif_list
53 * @if_num: identificator of the interface
54 * @if_status: status of the interface for batman-adv
55 * @net_dev: pointer to the net_device
56 * @num_bcasts: number of payload re-broadcasts on this interface (ARQ)
57 * @hardif_obj: kobject of the per interface sysfs "mesh" directory
58 * @refcount: number of contexts the object is used
59 * @batman_adv_ptype: packet type describing packets that should be processed by
60 * batman-adv for this interface
61 * @soft_iface: the batman-adv interface which uses this network interface
62 * @rcu: struct used for freeing in an RCU-safe manner
63 * @bat_iv: BATMAN IV specific per hard interface data
64 * @cleanup_work: work queue callback item for hard interface deinit
66 struct batadv_hard_iface {
67 struct list_head list;
70 struct net_device *net_dev;
72 struct kobject *hardif_obj;
74 struct packet_type batman_adv_ptype;
75 struct net_device *soft_iface;
77 struct batadv_hard_iface_bat_iv bat_iv;
78 struct work_struct cleanup_work;
82 * struct batadv_frag_table_entry - head in the fragment buffer table
83 * @head: head of list with fragments
84 * @lock: lock to protect the list of fragments
85 * @timestamp: time (jiffie) of last received fragment
86 * @seqno: sequence number of the fragments in the list
87 * @size: accumulated size of packets in list
89 struct batadv_frag_table_entry {
90 struct hlist_head head;
91 spinlock_t lock; /* protects head */
92 unsigned long timestamp;
98 * struct batadv_frag_list_entry - entry in a list of fragments
99 * @list: list node information
101 * @no: fragment number in the set
103 struct batadv_frag_list_entry {
104 struct hlist_node list;
110 * struct batadv_orig_node - structure for orig_list maintaining nodes of mesh
111 * @orig: originator ethernet address
112 * @primary_addr: hosts primary interface address
113 * @router: router that should be used to reach this originator
114 * @batadv_dat_addr_t: address of the orig node in the distributed hash
115 * @bcast_own: bitfield containing the number of our OGMs this orig_node
116 * rebroadcasted "back" to us (relative to last_real_seqno)
117 * @bcast_own_sum: counted result of bcast_own
118 * @last_seen: time when last packet from this node was received
119 * @bcast_seqno_reset: time when the broadcast seqno window was reset
120 * @batman_seqno_reset: time when the batman seqno window was reset
121 * @capabilities: announced capabilities of this originator
122 * @last_ttvn: last seen translation table version number
123 * @tt_crc: CRC of the translation table
124 * @tt_buff: last tt changeset this node received from the orig node
125 * @tt_buff_len: length of the last tt changeset this node received from the
127 * @tt_buff_lock: lock that protects tt_buff and tt_buff_len
128 * @tt_size: number of global TT entries announced by the orig node
129 * @tt_initialised: bool keeping track of whether or not this node have received
130 * any translation table information from the orig node yet
131 * @last_real_seqno: last and best known sequence number
132 * @last_ttl: ttl of last received packet
133 * @bcast_bits: bitfield containing the info which payload broadcast originated
134 * from this orig node this host already has seen (relative to
136 * @last_bcast_seqno: last broadcast sequence number received by this host
137 * @neigh_list: list of potential next hop neighbor towards this orig node
138 * @neigh_list_lock: lock protecting neigh_list, router and bonding_list
139 * @hash_entry: hlist node for batadv_priv::orig_hash
140 * @bat_priv: pointer to soft_iface this orig node belongs to
141 * @ogm_cnt_lock: lock protecting bcast_own, bcast_own_sum,
142 * neigh_node->real_bits & neigh_node->real_packet_count
143 * @bcast_seqno_lock: lock protecting bcast_bits & last_bcast_seqno
144 * @bond_candidates: how many candidates are available
145 * @bond_list: list of bonding candidates
146 * @refcount: number of contexts the object is used
147 * @rcu: struct used for freeing in an RCU-safe manner
148 * @in_coding_list: list of nodes this orig can hear
149 * @out_coding_list: list of nodes that can hear this orig
150 * @in_coding_list_lock: protects in_coding_list
151 * @out_coding_list_lock: protects out_coding_list
152 * @fragments: array with heads for fragment chains
154 struct batadv_orig_node {
155 uint8_t orig[ETH_ALEN];
156 uint8_t primary_addr[ETH_ALEN];
157 struct batadv_neigh_node __rcu *router; /* rcu protected pointer */
158 #ifdef CONFIG_BATMAN_ADV_DAT
159 batadv_dat_addr_t dat_addr;
161 unsigned long *bcast_own;
162 uint8_t *bcast_own_sum;
163 unsigned long last_seen;
164 unsigned long bcast_seqno_reset;
165 unsigned long batman_seqno_reset;
166 uint8_t capabilities;
169 unsigned char *tt_buff;
171 spinlock_t tt_buff_lock; /* protects tt_buff & tt_buff_len */
174 uint32_t last_real_seqno;
176 DECLARE_BITMAP(bcast_bits, BATADV_TQ_LOCAL_WINDOW_SIZE);
177 uint32_t last_bcast_seqno;
178 struct hlist_head neigh_list;
179 /* neigh_list_lock protects: neigh_list, router & bonding_list */
180 spinlock_t neigh_list_lock;
181 struct hlist_node hash_entry;
182 struct batadv_priv *bat_priv;
183 /* ogm_cnt_lock protects: bcast_own, bcast_own_sum,
184 * neigh_node->real_bits & neigh_node->real_packet_count
186 spinlock_t ogm_cnt_lock;
187 /* bcast_seqno_lock protects: bcast_bits & last_bcast_seqno */
188 spinlock_t bcast_seqno_lock;
189 atomic_t bond_candidates;
190 struct list_head bond_list;
193 #ifdef CONFIG_BATMAN_ADV_NC
194 struct list_head in_coding_list;
195 struct list_head out_coding_list;
196 spinlock_t in_coding_list_lock; /* Protects in_coding_list */
197 spinlock_t out_coding_list_lock; /* Protects out_coding_list */
199 struct batadv_frag_table_entry fragments[BATADV_FRAG_BUFFER_COUNT];
203 * enum batadv_orig_capabilities - orig node capabilities
204 * @BATADV_ORIG_CAPA_HAS_DAT: orig node has distributed arp table enabled
205 * @BATADV_ORIG_CAPA_HAS_NC: orig node has network coding enabled
207 enum batadv_orig_capabilities {
208 BATADV_ORIG_CAPA_HAS_DAT = BIT(0),
209 BATADV_ORIG_CAPA_HAS_NC = BIT(1),
213 * struct batadv_gw_node - structure for orig nodes announcing gw capabilities
214 * @list: list node for batadv_priv_gw::list
215 * @orig_node: pointer to corresponding orig node
216 * @bandwidth_down: advertised uplink download bandwidth
217 * @bandwidth_up: advertised uplink upload bandwidth
218 * @deleted: this struct is scheduled for deletion
219 * @refcount: number of contexts the object is used
220 * @rcu: struct used for freeing in an RCU-safe manner
222 struct batadv_gw_node {
223 struct hlist_node list;
224 struct batadv_orig_node *orig_node;
225 uint32_t bandwidth_down;
226 uint32_t bandwidth_up;
227 unsigned long deleted;
233 * struct batadv_neigh_node - structure for single hop neighbors
234 * @list: list node for batadv_orig_node::neigh_list
235 * @addr: mac address of neigh node
236 * @tq_recv: ring buffer of received TQ values from this neigh node
237 * @tq_index: ring buffer index
238 * @tq_avg: averaged tq of all tq values in the ring buffer (tq_recv)
239 * @last_ttl: last received ttl from this neigh node
240 * @bonding_list: list node for batadv_orig_node::bond_list
241 * @last_seen: when last packet via this neighbor was received
242 * @real_bits: bitfield containing the number of OGMs received from this neigh
243 * node (relative to orig_node->last_real_seqno)
244 * @real_packet_count: counted result of real_bits
245 * @orig_node: pointer to corresponding orig_node
246 * @if_incoming: pointer to incoming hard interface
247 * @lq_update_lock: lock protecting tq_recv & tq_index
248 * @refcount: number of contexts the object is used
249 * @rcu: struct used for freeing in an RCU-safe manner
251 struct batadv_neigh_node {
252 struct hlist_node list;
253 uint8_t addr[ETH_ALEN];
254 uint8_t tq_recv[BATADV_TQ_GLOBAL_WINDOW_SIZE];
258 struct list_head bonding_list;
259 unsigned long last_seen;
260 DECLARE_BITMAP(real_bits, BATADV_TQ_LOCAL_WINDOW_SIZE);
261 uint8_t real_packet_count;
262 struct batadv_orig_node *orig_node;
263 struct batadv_hard_iface *if_incoming;
264 spinlock_t lq_update_lock; /* protects tq_recv & tq_index */
270 * struct batadv_bcast_duplist_entry - structure for LAN broadcast suppression
271 * @orig[ETH_ALEN]: mac address of orig node orginating the broadcast
272 * @crc: crc32 checksum of broadcast payload
273 * @entrytime: time when the broadcast packet was received
275 #ifdef CONFIG_BATMAN_ADV_BLA
276 struct batadv_bcast_duplist_entry {
277 uint8_t orig[ETH_ALEN];
279 unsigned long entrytime;
284 * enum batadv_counters - indices for traffic counters
285 * @BATADV_CNT_TX: transmitted payload traffic packet counter
286 * @BATADV_CNT_TX_BYTES: transmitted payload traffic bytes counter
287 * @BATADV_CNT_TX_DROPPED: dropped transmission payload traffic packet counter
288 * @BATADV_CNT_RX: received payload traffic packet counter
289 * @BATADV_CNT_RX_BYTES: received payload traffic bytes counter
290 * @BATADV_CNT_FORWARD: forwarded payload traffic packet counter
291 * @BATADV_CNT_FORWARD_BYTES: forwarded payload traffic bytes counter
292 * @BATADV_CNT_MGMT_TX: transmitted routing protocol traffic packet counter
293 * @BATADV_CNT_MGMT_TX_BYTES: transmitted routing protocol traffic bytes counter
294 * @BATADV_CNT_MGMT_RX: received routing protocol traffic packet counter
295 * @BATADV_CNT_MGMT_RX_BYTES: received routing protocol traffic bytes counter
296 * @BATADV_CNT_FRAG_TX: transmitted fragment traffic packet counter
297 * @BATADV_CNT_FRAG_TX_BYTES: transmitted fragment traffic bytes counter
298 * @BATADV_CNT_FRAG_RX: received fragment traffic packet counter
299 * @BATADV_CNT_FRAG_RX_BYTES: received fragment traffic bytes counter
300 * @BATADV_CNT_FRAG_FWD: forwarded fragment traffic packet counter
301 * @BATADV_CNT_FRAG_FWD_BYTES: forwarded fragment traffic bytes counter
302 * @BATADV_CNT_TT_REQUEST_TX: transmitted tt req traffic packet counter
303 * @BATADV_CNT_TT_REQUEST_RX: received tt req traffic packet counter
304 * @BATADV_CNT_TT_RESPONSE_TX: transmitted tt resp traffic packet counter
305 * @BATADV_CNT_TT_RESPONSE_RX: received tt resp traffic packet counter
306 * @BATADV_CNT_TT_ROAM_ADV_TX: transmitted tt roam traffic packet counter
307 * @BATADV_CNT_TT_ROAM_ADV_RX: received tt roam traffic packet counter
308 * @BATADV_CNT_DAT_GET_TX: transmitted dht GET traffic packet counter
309 * @BATADV_CNT_DAT_GET_RX: received dht GET traffic packet counter
310 * @BATADV_CNT_DAT_PUT_TX: transmitted dht PUT traffic packet counter
311 * @BATADV_CNT_DAT_PUT_RX: received dht PUT traffic packet counter
312 * @BATADV_CNT_DAT_CACHED_REPLY_TX: transmitted dat cache reply traffic packet
314 * @BATADV_CNT_NC_CODE: transmitted nc-combined traffic packet counter
315 * @BATADV_CNT_NC_CODE_BYTES: transmitted nc-combined traffic bytes counter
316 * @BATADV_CNT_NC_RECODE: transmitted nc-recombined traffic packet counter
317 * @BATADV_CNT_NC_RECODE_BYTES: transmitted nc-recombined traffic bytes counter
318 * @BATADV_CNT_NC_BUFFER: counter for packets buffered for later nc decoding
319 * @BATADV_CNT_NC_DECODE: received and nc-decoded traffic packet counter
320 * @BATADV_CNT_NC_DECODE_BYTES: received and nc-decoded traffic bytes counter
321 * @BATADV_CNT_NC_DECODE_FAILED: received and decode-failed traffic packet
323 * @BATADV_CNT_NC_SNIFFED: counter for nc-decoded packets received in promisc
325 * @BATADV_CNT_NUM: number of traffic counters
327 enum batadv_counters {
330 BATADV_CNT_TX_DROPPED,
334 BATADV_CNT_FORWARD_BYTES,
336 BATADV_CNT_MGMT_TX_BYTES,
338 BATADV_CNT_MGMT_RX_BYTES,
340 BATADV_CNT_FRAG_TX_BYTES,
342 BATADV_CNT_FRAG_RX_BYTES,
344 BATADV_CNT_FRAG_FWD_BYTES,
345 BATADV_CNT_TT_REQUEST_TX,
346 BATADV_CNT_TT_REQUEST_RX,
347 BATADV_CNT_TT_RESPONSE_TX,
348 BATADV_CNT_TT_RESPONSE_RX,
349 BATADV_CNT_TT_ROAM_ADV_TX,
350 BATADV_CNT_TT_ROAM_ADV_RX,
351 #ifdef CONFIG_BATMAN_ADV_DAT
352 BATADV_CNT_DAT_GET_TX,
353 BATADV_CNT_DAT_GET_RX,
354 BATADV_CNT_DAT_PUT_TX,
355 BATADV_CNT_DAT_PUT_RX,
356 BATADV_CNT_DAT_CACHED_REPLY_TX,
358 #ifdef CONFIG_BATMAN_ADV_NC
360 BATADV_CNT_NC_CODE_BYTES,
361 BATADV_CNT_NC_RECODE,
362 BATADV_CNT_NC_RECODE_BYTES,
363 BATADV_CNT_NC_BUFFER,
364 BATADV_CNT_NC_DECODE,
365 BATADV_CNT_NC_DECODE_BYTES,
366 BATADV_CNT_NC_DECODE_FAILED,
367 BATADV_CNT_NC_SNIFFED,
373 * struct batadv_priv_tt - per mesh interface translation table data
374 * @vn: translation table version number
375 * @ogm_append_cnt: counter of number of OGMs containing the local tt diff
376 * @local_changes: changes registered in an originator interval
377 * @changes_list: tracks tt local changes within an originator interval
378 * @local_hash: local translation table hash table
379 * @global_hash: global translation table hash table
380 * @req_list: list of pending & unanswered tt_requests
381 * @roam_list: list of the last roaming events of each client limiting the
382 * number of roaming events to avoid route flapping
383 * @changes_list_lock: lock protecting changes_list
384 * @req_list_lock: lock protecting req_list
385 * @roam_list_lock: lock protecting roam_list
386 * @local_entry_num: number of entries in the local hash table
387 * @local_crc: Checksum of the local table, recomputed before sending a new OGM
388 * @last_changeset: last tt changeset this host has generated
389 * @last_changeset_len: length of last tt changeset this host has generated
390 * @last_changeset_lock: lock protecting last_changeset & last_changeset_len
391 * @work: work queue callback item for translation table purging
393 struct batadv_priv_tt {
395 atomic_t ogm_append_cnt;
396 atomic_t local_changes;
397 struct list_head changes_list;
398 struct batadv_hashtable *local_hash;
399 struct batadv_hashtable *global_hash;
400 struct list_head req_list;
401 struct list_head roam_list;
402 spinlock_t changes_list_lock; /* protects changes */
403 spinlock_t req_list_lock; /* protects req_list */
404 spinlock_t roam_list_lock; /* protects roam_list */
405 atomic_t local_entry_num;
407 unsigned char *last_changeset;
408 int16_t last_changeset_len;
409 /* protects last_changeset & last_changeset_len */
410 spinlock_t last_changeset_lock;
411 struct delayed_work work;
415 * struct batadv_priv_bla - per mesh interface bridge loope avoidance data
416 * @num_requests; number of bla requests in flight
417 * @claim_hash: hash table containing mesh nodes this host has claimed
418 * @backbone_hash: hash table containing all detected backbone gateways
419 * @bcast_duplist: recently received broadcast packets array (for broadcast
420 * duplicate suppression)
421 * @bcast_duplist_curr: index of last broadcast packet added to bcast_duplist
422 * @bcast_duplist_lock: lock protecting bcast_duplist & bcast_duplist_curr
423 * @claim_dest: local claim data (e.g. claim group)
424 * @work: work queue callback item for cleanups & bla announcements
426 #ifdef CONFIG_BATMAN_ADV_BLA
427 struct batadv_priv_bla {
428 atomic_t num_requests;
429 struct batadv_hashtable *claim_hash;
430 struct batadv_hashtable *backbone_hash;
431 struct batadv_bcast_duplist_entry bcast_duplist[BATADV_DUPLIST_SIZE];
432 int bcast_duplist_curr;
433 /* protects bcast_duplist & bcast_duplist_curr */
434 spinlock_t bcast_duplist_lock;
435 struct batadv_bla_claim_dst claim_dest;
436 struct delayed_work work;
441 * struct batadv_debug_log - debug logging data
442 * @log_buff: buffer holding the logs (ring bufer)
443 * @log_start: index of next character to read
444 * @log_end: index of next character to write
445 * @lock: lock protecting log_buff, log_start & log_end
446 * @queue_wait: log reader's wait queue
448 #ifdef CONFIG_BATMAN_ADV_DEBUG
449 struct batadv_priv_debug_log {
450 char log_buff[BATADV_LOG_BUF_LEN];
451 unsigned long log_start;
452 unsigned long log_end;
453 spinlock_t lock; /* protects log_buff, log_start and log_end */
454 wait_queue_head_t queue_wait;
459 * struct batadv_priv_gw - per mesh interface gateway data
460 * @list: list of available gateway nodes
461 * @list_lock: lock protecting gw_list & curr_gw
462 * @curr_gw: pointer to currently selected gateway node
463 * @bandwidth_down: advertised uplink download bandwidth (if gw_mode server)
464 * @bandwidth_up: advertised uplink upload bandwidth (if gw_mode server)
465 * @reselect: bool indicating a gateway re-selection is in progress
467 struct batadv_priv_gw {
468 struct hlist_head list;
469 spinlock_t list_lock; /* protects gw_list & curr_gw */
470 struct batadv_gw_node __rcu *curr_gw; /* rcu protected pointer */
471 atomic_t bandwidth_down;
472 atomic_t bandwidth_up;
477 * struct batadv_priv_tvlv - per mesh interface tvlv data
478 * @container_list: list of registered tvlv containers to be sent with each OGM
479 * @handler_list: list of the various tvlv content handlers
480 * @container_list_lock: protects tvlv container list access
481 * @handler_list_lock: protects handler list access
483 struct batadv_priv_tvlv {
484 struct hlist_head container_list;
485 struct hlist_head handler_list;
486 spinlock_t container_list_lock; /* protects container_list */
487 spinlock_t handler_list_lock; /* protects handler_list */
491 * struct batadv_priv_dat - per mesh interface DAT private data
492 * @addr: node DAT address
493 * @hash: hashtable representing the local ARP cache
494 * @work: work queue callback item for cache purging
496 #ifdef CONFIG_BATMAN_ADV_DAT
497 struct batadv_priv_dat {
498 batadv_dat_addr_t addr;
499 struct batadv_hashtable *hash;
500 struct delayed_work work;
505 * struct batadv_priv_nc - per mesh interface network coding private data
506 * @work: work queue callback item for cleanup
507 * @debug_dir: dentry for nc subdir in batman-adv directory in debugfs
508 * @min_tq: only consider neighbors for encoding if neigh_tq > min_tq
509 * @max_fwd_delay: maximum packet forward delay to allow coding of packets
510 * @max_buffer_time: buffer time for sniffed packets used to decoding
511 * @timestamp_fwd_flush: timestamp of last forward packet queue flush
512 * @timestamp_sniffed_purge: timestamp of last sniffed packet queue purge
513 * @coding_hash: Hash table used to buffer skbs while waiting for another
514 * incoming skb to code it with. Skbs are added to the buffer just before being
515 * forwarded in routing.c
516 * @decoding_hash: Hash table used to buffer skbs that might be needed to decode
517 * a received coded skb. The buffer is used for 1) skbs arriving on the
518 * soft-interface; 2) skbs overheard on the hard-interface; and 3) skbs
519 * forwarded by batman-adv.
521 struct batadv_priv_nc {
522 struct delayed_work work;
523 struct dentry *debug_dir;
527 unsigned long timestamp_fwd_flush;
528 unsigned long timestamp_sniffed_purge;
529 struct batadv_hashtable *coding_hash;
530 struct batadv_hashtable *decoding_hash;
534 * struct batadv_softif_vlan - per VLAN attributes set
535 * @vid: VLAN identifier
536 * @kobj: kobject for sysfs vlan subdirectory
537 * @ap_isolation: AP isolation state
538 * @list: list node for bat_priv::softif_vlan_list
539 * @refcount: number of context where this object is currently in use
540 * @rcu: struct used for freeing in a RCU-safe manner
542 struct batadv_softif_vlan {
544 struct kobject *kobj;
545 atomic_t ap_isolation; /* boolean */
546 struct hlist_node list;
552 * struct batadv_priv - per mesh interface data
553 * @mesh_state: current status of the mesh (inactive/active/deactivating)
554 * @soft_iface: net device which holds this struct as private data
555 * @stats: structure holding the data for the ndo_get_stats() call
556 * @bat_counters: mesh internal traffic statistic counters (see batadv_counters)
557 * @aggregated_ogms: bool indicating whether OGM aggregation is enabled
558 * @bonding: bool indicating whether traffic bonding is enabled
559 * @fragmentation: bool indicating whether traffic fragmentation is enabled
560 * @frag_seqno: incremental counter to identify chains of egress fragments
561 * @bridge_loop_avoidance: bool indicating whether bridge loop avoidance is
563 * @distributed_arp_table: bool indicating whether distributed ARP table is
565 * @gw_mode: gateway operation: off, client or server (see batadv_gw_modes)
566 * @gw_sel_class: gateway selection class (applies if gw_mode client)
567 * @orig_interval: OGM broadcast interval in milliseconds
568 * @hop_penalty: penalty which will be applied to an OGM's tq-field on every hop
569 * @log_level: configured log level (see batadv_dbg_level)
570 * @bcast_seqno: last sent broadcast packet sequence number
571 * @bcast_queue_left: number of remaining buffered broadcast packet slots
572 * @batman_queue_left: number of remaining OGM packet slots
573 * @num_ifaces: number of interfaces assigned to this mesh interface
574 * @mesh_obj: kobject for sysfs mesh subdirectory
575 * @debug_dir: dentry for debugfs batman-adv subdirectory
576 * @forw_bat_list: list of aggregated OGMs that will be forwarded
577 * @forw_bcast_list: list of broadcast packets that will be rebroadcasted
578 * @orig_hash: hash table containing mesh participants (orig nodes)
579 * @forw_bat_list_lock: lock protecting forw_bat_list
580 * @forw_bcast_list_lock: lock protecting forw_bcast_list
581 * @orig_work: work queue callback item for orig node purging
582 * @cleanup_work: work queue callback item for soft interface deinit
583 * @primary_if: one of the hard interfaces assigned to this mesh interface
584 * becomes the primary interface
585 * @bat_algo_ops: routing algorithm used by this mesh interface
586 * @softif_vlan_list: a list of softif_vlan structs, one per VLAN created on top
587 * of the mesh interface represented by this object
588 * @softif_vlan_list_lock: lock protecting softif_vlan_list
589 * @bla: bridge loope avoidance data
590 * @debug_log: holding debug logging relevant data
592 * @tt: translation table data
593 * @tvlv: type-version-length-value data
594 * @dat: distributed arp table data
595 * @network_coding: bool indicating whether network coding is enabled
596 * @batadv_priv_nc: network coding data
600 struct net_device *soft_iface;
601 struct net_device_stats stats;
602 uint64_t __percpu *bat_counters; /* Per cpu counters */
603 atomic_t aggregated_ogms;
605 atomic_t fragmentation;
607 #ifdef CONFIG_BATMAN_ADV_BLA
608 atomic_t bridge_loop_avoidance;
610 #ifdef CONFIG_BATMAN_ADV_DAT
611 atomic_t distributed_arp_table;
614 atomic_t gw_sel_class;
615 atomic_t orig_interval;
616 atomic_t hop_penalty;
617 #ifdef CONFIG_BATMAN_ADV_DEBUG
620 atomic_t bcast_seqno;
621 atomic_t bcast_queue_left;
622 atomic_t batman_queue_left;
624 struct kobject *mesh_obj;
625 struct dentry *debug_dir;
626 struct hlist_head forw_bat_list;
627 struct hlist_head forw_bcast_list;
628 struct batadv_hashtable *orig_hash;
629 spinlock_t forw_bat_list_lock; /* protects forw_bat_list */
630 spinlock_t forw_bcast_list_lock; /* protects forw_bcast_list */
631 struct delayed_work orig_work;
632 struct work_struct cleanup_work;
633 struct batadv_hard_iface __rcu *primary_if; /* rcu protected pointer */
634 struct batadv_algo_ops *bat_algo_ops;
635 struct hlist_head softif_vlan_list;
636 spinlock_t softif_vlan_list_lock; /* protects softif_vlan_list */
637 #ifdef CONFIG_BATMAN_ADV_BLA
638 struct batadv_priv_bla bla;
640 #ifdef CONFIG_BATMAN_ADV_DEBUG
641 struct batadv_priv_debug_log *debug_log;
643 struct batadv_priv_gw gw;
644 struct batadv_priv_tt tt;
645 struct batadv_priv_tvlv tvlv;
646 #ifdef CONFIG_BATMAN_ADV_DAT
647 struct batadv_priv_dat dat;
649 #ifdef CONFIG_BATMAN_ADV_NC
650 atomic_t network_coding;
651 struct batadv_priv_nc nc;
652 #endif /* CONFIG_BATMAN_ADV_NC */
656 * struct batadv_socket_client - layer2 icmp socket client data
657 * @queue_list: packet queue for packets destined for this socket client
658 * @queue_len: number of packets in the packet queue (queue_list)
659 * @index: socket client's index in the batadv_socket_client_hash
660 * @lock: lock protecting queue_list, queue_len & index
661 * @queue_wait: socket client's wait queue
662 * @bat_priv: pointer to soft_iface this client belongs to
664 struct batadv_socket_client {
665 struct list_head queue_list;
666 unsigned int queue_len;
668 spinlock_t lock; /* protects queue_list, queue_len & index */
669 wait_queue_head_t queue_wait;
670 struct batadv_priv *bat_priv;
674 * struct batadv_socket_packet - layer2 icmp packet for socket client
675 * @list: list node for batadv_socket_client::queue_list
676 * @icmp_len: size of the layer2 icmp packet
677 * @icmp_packet: layer2 icmp packet
679 struct batadv_socket_packet {
680 struct list_head list;
682 struct batadv_icmp_packet_rr icmp_packet;
686 * struct batadv_bla_backbone_gw - batman-adv gateway bridged into the LAN
687 * @orig: originator address of backbone node (mac address of primary iface)
688 * @vid: vlan id this gateway was detected on
689 * @hash_entry: hlist node for batadv_priv_bla::backbone_hash
690 * @bat_priv: pointer to soft_iface this backbone gateway belongs to
691 * @lasttime: last time we heard of this backbone gw
692 * @wait_periods: grace time for bridge forward delays and bla group forming at
693 * bootup phase - no bcast traffic is formwared until it has elapsed
694 * @request_sent: if this bool is set to true we are out of sync with this
695 * backbone gateway - no bcast traffic is formwared until the situation was
697 * @crc: crc16 checksum over all claims
698 * @refcount: number of contexts the object is used
699 * @rcu: struct used for freeing in an RCU-safe manner
701 #ifdef CONFIG_BATMAN_ADV_BLA
702 struct batadv_bla_backbone_gw {
703 uint8_t orig[ETH_ALEN];
705 struct hlist_node hash_entry;
706 struct batadv_priv *bat_priv;
707 unsigned long lasttime;
708 atomic_t wait_periods;
709 atomic_t request_sent;
716 * struct batadv_bla_claim - claimed non-mesh client structure
717 * @addr: mac address of claimed non-mesh client
718 * @vid: vlan id this client was detected on
719 * @batadv_bla_backbone_gw: pointer to backbone gw claiming this client
720 * @lasttime: last time we heard of claim (locals only)
721 * @hash_entry: hlist node for batadv_priv_bla::claim_hash
722 * @refcount: number of contexts the object is used
723 * @rcu: struct used for freeing in an RCU-safe manner
725 struct batadv_bla_claim {
726 uint8_t addr[ETH_ALEN];
728 struct batadv_bla_backbone_gw *backbone_gw;
729 unsigned long lasttime;
730 struct hlist_node hash_entry;
737 * struct batadv_tt_common_entry - tt local & tt global common data
738 * @addr: mac address of non-mesh client
739 * @vid: VLAN identifier
740 * @hash_entry: hlist node for batadv_priv_tt::local_hash or for
741 * batadv_priv_tt::global_hash
742 * @flags: various state handling flags (see batadv_tt_client_flags)
743 * @added_at: timestamp used for purging stale tt common entries
744 * @refcount: number of contexts the object is used
745 * @rcu: struct used for freeing in an RCU-safe manner
747 struct batadv_tt_common_entry {
748 uint8_t addr[ETH_ALEN];
750 struct hlist_node hash_entry;
752 unsigned long added_at;
758 * struct batadv_tt_local_entry - translation table local entry data
759 * @common: general translation table data
760 * @last_seen: timestamp used for purging stale tt local entries
762 struct batadv_tt_local_entry {
763 struct batadv_tt_common_entry common;
764 unsigned long last_seen;
768 * struct batadv_tt_global_entry - translation table global entry data
769 * @common: general translation table data
770 * @orig_list: list of orig nodes announcing this non-mesh client
771 * @list_lock: lock protecting orig_list
772 * @roam_at: time at which TT_GLOBAL_ROAM was set
774 struct batadv_tt_global_entry {
775 struct batadv_tt_common_entry common;
776 struct hlist_head orig_list;
777 spinlock_t list_lock; /* protects orig_list */
778 unsigned long roam_at;
782 * struct batadv_tt_orig_list_entry - orig node announcing a non-mesh client
783 * @orig_node: pointer to orig node announcing this non-mesh client
784 * @ttvn: translation table version number which added the non-mesh client
785 * @list: list node for batadv_tt_global_entry::orig_list
786 * @refcount: number of contexts the object is used
787 * @rcu: struct used for freeing in an RCU-safe manner
789 struct batadv_tt_orig_list_entry {
790 struct batadv_orig_node *orig_node;
792 struct hlist_node list;
798 * struct batadv_tt_change_node - structure for tt changes occured
799 * @list: list node for batadv_priv_tt::changes_list
800 * @change: holds the actual translation table diff data
802 struct batadv_tt_change_node {
803 struct list_head list;
804 struct batadv_tvlv_tt_change change;
808 * struct batadv_tt_req_node - data to keep track of the tt requests in flight
809 * @addr: mac address address of the originator this request was sent to
810 * @issued_at: timestamp used for purging stale tt requests
811 * @list: list node for batadv_priv_tt::req_list
813 struct batadv_tt_req_node {
814 uint8_t addr[ETH_ALEN];
815 unsigned long issued_at;
816 struct list_head list;
820 * struct batadv_tt_roam_node - roaming client data
821 * @addr: mac address of the client in the roaming phase
822 * @counter: number of allowed roaming events per client within a single
823 * OGM interval (changes are committed with each OGM)
824 * @first_time: timestamp used for purging stale roaming node entries
825 * @list: list node for batadv_priv_tt::roam_list
827 struct batadv_tt_roam_node {
828 uint8_t addr[ETH_ALEN];
830 unsigned long first_time;
831 struct list_head list;
835 * struct batadv_nc_node - network coding node
836 * @list: next and prev pointer for the list handling
837 * @addr: the node's mac address
838 * @refcount: number of contexts the object is used by
839 * @rcu: struct used for freeing in an RCU-safe manner
840 * @orig_node: pointer to corresponding orig node struct
841 * @last_seen: timestamp of last ogm received from this node
843 struct batadv_nc_node {
844 struct list_head list;
845 uint8_t addr[ETH_ALEN];
848 struct batadv_orig_node *orig_node;
849 unsigned long last_seen;
853 * struct batadv_nc_path - network coding path
854 * @hash_entry: next and prev pointer for the list handling
855 * @rcu: struct used for freeing in an RCU-safe manner
856 * @refcount: number of contexts the object is used by
857 * @packet_list: list of buffered packets for this path
858 * @packet_list_lock: access lock for packet list
859 * @next_hop: next hop (destination) of path
860 * @prev_hop: previous hop (source) of path
861 * @last_valid: timestamp for last validation of path
863 struct batadv_nc_path {
864 struct hlist_node hash_entry;
867 struct list_head packet_list;
868 spinlock_t packet_list_lock; /* Protects packet_list */
869 uint8_t next_hop[ETH_ALEN];
870 uint8_t prev_hop[ETH_ALEN];
871 unsigned long last_valid;
875 * struct batadv_nc_packet - network coding packet used when coding and
877 * @list: next and prev pointer for the list handling
878 * @packet_id: crc32 checksum of skb data
879 * @timestamp: field containing the info when the packet was added to path
880 * @neigh_node: pointer to original next hop neighbor of skb
881 * @skb: skb which can be encoded or used for decoding
882 * @nc_path: pointer to path this nc packet is attached to
884 struct batadv_nc_packet {
885 struct list_head list;
887 unsigned long timestamp;
888 struct batadv_neigh_node *neigh_node;
890 struct batadv_nc_path *nc_path;
894 * batadv_skb_cb - control buffer structure used to store private data relevant
895 * to batman-adv in the skb->cb buffer in skbs.
896 * @decoded: Marks a skb as decoded, which is checked when searching for coding
897 * opportunities in network-coding.c
899 struct batadv_skb_cb {
904 * struct batadv_forw_packet - structure for bcast packets to be sent/forwarded
905 * @list: list node for batadv_socket_client::queue_list
906 * @send_time: execution time for delayed_work (packet sending)
907 * @own: bool for locally generated packets (local OGMs are re-scheduled after
909 * @skb: bcast packet's skb buffer
910 * @packet_len: size of aggregated OGM packet inside the skb buffer
911 * @direct_link_flags: direct link flags for aggregated OGM packets
912 * @num_packets: counter for bcast packet retransmission
913 * @delayed_work: work queue callback item for packet sending
914 * @if_incoming: pointer incoming hard-iface or primary iface if locally
917 struct batadv_forw_packet {
918 struct hlist_node list;
919 unsigned long send_time;
923 uint32_t direct_link_flags;
925 struct delayed_work delayed_work;
926 struct batadv_hard_iface *if_incoming;
930 * struct batadv_algo_ops - mesh algorithm callbacks
931 * @list: list node for the batadv_algo_list
932 * @name: name of the algorithm
933 * @bat_iface_enable: init routing info when hard-interface is enabled
934 * @bat_iface_disable: de-init routing info when hard-interface is disabled
935 * @bat_iface_update_mac: (re-)init mac addresses of the protocol information
936 * belonging to this hard-interface
937 * @bat_primary_iface_set: called when primary interface is selected / changed
938 * @bat_ogm_schedule: prepare a new outgoing OGM for the send queue
939 * @bat_ogm_emit: send scheduled OGM
941 struct batadv_algo_ops {
942 struct hlist_node list;
944 int (*bat_iface_enable)(struct batadv_hard_iface *hard_iface);
945 void (*bat_iface_disable)(struct batadv_hard_iface *hard_iface);
946 void (*bat_iface_update_mac)(struct batadv_hard_iface *hard_iface);
947 void (*bat_primary_iface_set)(struct batadv_hard_iface *hard_iface);
948 void (*bat_ogm_schedule)(struct batadv_hard_iface *hard_iface);
949 void (*bat_ogm_emit)(struct batadv_forw_packet *forw_packet);
953 * struct batadv_dat_entry - it is a single entry of batman-adv ARP backend. It
954 * is used to stored ARP entries needed for the global DAT cache
955 * @ip: the IPv4 corresponding to this DAT/ARP entry
956 * @mac_addr: the MAC address associated to the stored IPv4
957 * @vid: the vlan ID associated to this entry
958 * @last_update: time in jiffies when this entry was refreshed last time
959 * @hash_entry: hlist node for batadv_priv_dat::hash
960 * @refcount: number of contexts the object is used
961 * @rcu: struct used for freeing in an RCU-safe manner
963 struct batadv_dat_entry {
965 uint8_t mac_addr[ETH_ALEN];
967 unsigned long last_update;
968 struct hlist_node hash_entry;
974 * struct batadv_dat_candidate - candidate destination for DAT operations
975 * @type: the type of the selected candidate. It can one of the following:
976 * - BATADV_DAT_CANDIDATE_NOT_FOUND
977 * - BATADV_DAT_CANDIDATE_ORIG
978 * @orig_node: if type is BATADV_DAT_CANDIDATE_ORIG this field points to the
979 * corresponding originator node structure
981 struct batadv_dat_candidate {
983 struct batadv_orig_node *orig_node;
987 * struct batadv_tvlv_container - container for tvlv appended to OGMs
988 * @list: hlist node for batadv_priv_tvlv::container_list
989 * @tvlv_hdr: tvlv header information needed to construct the tvlv
990 * @value_len: length of the buffer following this struct which contains
991 * the actual tvlv payload
992 * @refcount: number of contexts the object is used
994 struct batadv_tvlv_container {
995 struct hlist_node list;
996 struct batadv_tvlv_hdr tvlv_hdr;
1001 * struct batadv_tvlv_handler - handler for specific tvlv type and version
1002 * @list: hlist node for batadv_priv_tvlv::handler_list
1003 * @ogm_handler: handler callback which is given the tvlv payload to process on
1004 * incoming OGM packets
1005 * @unicast_handler: handler callback which is given the tvlv payload to process
1006 * on incoming unicast tvlv packets
1007 * @type: tvlv type this handler feels responsible for
1008 * @version: tvlv version this handler feels responsible for
1009 * @flags: tvlv handler flags
1010 * @refcount: number of contexts the object is used
1011 * @rcu: struct used for freeing in an RCU-safe manner
1013 struct batadv_tvlv_handler {
1014 struct hlist_node list;
1015 void (*ogm_handler)(struct batadv_priv *bat_priv,
1016 struct batadv_orig_node *orig,
1018 void *tvlv_value, uint16_t tvlv_value_len);
1019 int (*unicast_handler)(struct batadv_priv *bat_priv,
1020 uint8_t *src, uint8_t *dst,
1021 void *tvlv_value, uint16_t tvlv_value_len);
1026 struct rcu_head rcu;
1030 * enum batadv_tvlv_handler_flags - tvlv handler flags definitions
1031 * @BATADV_TVLV_HANDLER_OGM_CIFNOTFND: tvlv ogm processing function will call
1032 * this handler even if its type was not found (with no data)
1033 * @BATADV_TVLV_HANDLER_OGM_CALLED: interval tvlv handling flag - the API marks
1034 * a handler as being called, so it won't be called if the
1035 * BATADV_TVLV_HANDLER_OGM_CIFNOTFND flag was set
1037 enum batadv_tvlv_handler_flags {
1038 BATADV_TVLV_HANDLER_OGM_CIFNOTFND = BIT(1),
1039 BATADV_TVLV_HANDLER_OGM_CALLED = BIT(2),
1042 #endif /* _NET_BATMAN_ADV_TYPES_H_ */