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>
28 * Maximum overhead for the encapsulation for a payload packet
30 #define BATADV_HEADER_LEN \
31 (ETH_HLEN + max(sizeof(struct batadv_unicast_packet), \
32 sizeof(struct batadv_bcast_packet)))
34 #ifdef CONFIG_BATMAN_ADV_DAT
36 /* batadv_dat_addr_t is the type used for all DHT addresses. If it is changed,
37 * BATADV_DAT_ADDR_MAX is changed as well.
39 * *Please be careful: batadv_dat_addr_t must be UNSIGNED*
41 #define batadv_dat_addr_t uint16_t
43 #endif /* CONFIG_BATMAN_ADV_DAT */
46 * struct batadv_hard_iface_bat_iv - per hard interface B.A.T.M.A.N. IV data
47 * @ogm_buff: buffer holding the OGM packet
48 * @ogm_buff_len: length of the OGM packet buffer
49 * @ogm_seqno: OGM sequence number - used to identify each OGM
51 struct batadv_hard_iface_bat_iv {
52 unsigned char *ogm_buff;
58 * struct batadv_hard_iface - network device known to batman-adv
59 * @list: list node for batadv_hardif_list
60 * @if_num: identificator of the interface
61 * @if_status: status of the interface for batman-adv
62 * @net_dev: pointer to the net_device
63 * @num_bcasts: number of payload re-broadcasts on this interface (ARQ)
64 * @hardif_obj: kobject of the per interface sysfs "mesh" directory
65 * @refcount: number of contexts the object is used
66 * @batman_adv_ptype: packet type describing packets that should be processed by
67 * batman-adv for this interface
68 * @soft_iface: the batman-adv interface which uses this network interface
69 * @rcu: struct used for freeing in an RCU-safe manner
70 * @bat_iv: BATMAN IV specific per hard interface data
71 * @cleanup_work: work queue callback item for hard interface deinit
73 struct batadv_hard_iface {
74 struct list_head list;
77 struct net_device *net_dev;
79 struct kobject *hardif_obj;
81 struct packet_type batman_adv_ptype;
82 struct net_device *soft_iface;
84 struct batadv_hard_iface_bat_iv bat_iv;
85 struct work_struct cleanup_work;
89 * struct batadv_frag_table_entry - head in the fragment buffer table
90 * @head: head of list with fragments
91 * @lock: lock to protect the list of fragments
92 * @timestamp: time (jiffie) of last received fragment
93 * @seqno: sequence number of the fragments in the list
94 * @size: accumulated size of packets in list
96 struct batadv_frag_table_entry {
97 struct hlist_head head;
98 spinlock_t lock; /* protects head */
99 unsigned long timestamp;
105 * struct batadv_frag_list_entry - entry in a list of fragments
106 * @list: list node information
108 * @no: fragment number in the set
110 struct batadv_frag_list_entry {
111 struct hlist_node list;
117 * struct batadv_orig_node - structure for orig_list maintaining nodes of mesh
118 * @orig: originator ethernet address
119 * @primary_addr: hosts primary interface address
120 * @router: router that should be used to reach this originator
121 * @batadv_dat_addr_t: address of the orig node in the distributed hash
122 * @bcast_own: bitfield containing the number of our OGMs this orig_node
123 * rebroadcasted "back" to us (relative to last_real_seqno)
124 * @bcast_own_sum: counted result of bcast_own
125 * @last_seen: time when last packet from this node was received
126 * @bcast_seqno_reset: time when the broadcast seqno window was reset
127 * @batman_seqno_reset: time when the batman seqno window was reset
128 * @capabilities: announced capabilities of this originator
129 * @last_ttvn: last seen translation table version number
130 * @tt_crc: CRC of the translation table
131 * @tt_buff: last tt changeset this node received from the orig node
132 * @tt_buff_len: length of the last tt changeset this node received from the
134 * @tt_buff_lock: lock that protects tt_buff and tt_buff_len
135 * @tt_size: number of global TT entries announced by the orig node
136 * @tt_initialised: bool keeping track of whether or not this node have received
137 * any translation table information from the orig node yet
138 * @last_real_seqno: last and best known sequence number
139 * @last_ttl: ttl of last received packet
140 * @bcast_bits: bitfield containing the info which payload broadcast originated
141 * from this orig node this host already has seen (relative to
143 * @last_bcast_seqno: last broadcast sequence number received by this host
144 * @neigh_list: list of potential next hop neighbor towards this orig node
145 * @neigh_list_lock: lock protecting neigh_list, router and bonding_list
146 * @hash_entry: hlist node for batadv_priv::orig_hash
147 * @bat_priv: pointer to soft_iface this orig node belongs to
148 * @ogm_cnt_lock: lock protecting bcast_own, bcast_own_sum,
149 * neigh_node->real_bits & neigh_node->real_packet_count
150 * @bcast_seqno_lock: lock protecting bcast_bits & last_bcast_seqno
151 * @bond_candidates: how many candidates are available
152 * @bond_list: list of bonding candidates
153 * @refcount: number of contexts the object is used
154 * @rcu: struct used for freeing in an RCU-safe manner
155 * @in_coding_list: list of nodes this orig can hear
156 * @out_coding_list: list of nodes that can hear this orig
157 * @in_coding_list_lock: protects in_coding_list
158 * @out_coding_list_lock: protects out_coding_list
159 * @fragments: array with heads for fragment chains
161 struct batadv_orig_node {
162 uint8_t orig[ETH_ALEN];
163 uint8_t primary_addr[ETH_ALEN];
164 struct batadv_neigh_node __rcu *router; /* rcu protected pointer */
165 #ifdef CONFIG_BATMAN_ADV_DAT
166 batadv_dat_addr_t dat_addr;
168 unsigned long *bcast_own;
169 uint8_t *bcast_own_sum;
170 unsigned long last_seen;
171 unsigned long bcast_seqno_reset;
172 unsigned long batman_seqno_reset;
173 uint8_t capabilities;
176 unsigned char *tt_buff;
178 spinlock_t tt_buff_lock; /* protects tt_buff & tt_buff_len */
181 uint32_t last_real_seqno;
183 DECLARE_BITMAP(bcast_bits, BATADV_TQ_LOCAL_WINDOW_SIZE);
184 uint32_t last_bcast_seqno;
185 struct hlist_head neigh_list;
186 /* neigh_list_lock protects: neigh_list, router & bonding_list */
187 spinlock_t neigh_list_lock;
188 struct hlist_node hash_entry;
189 struct batadv_priv *bat_priv;
190 /* ogm_cnt_lock protects: bcast_own, bcast_own_sum,
191 * neigh_node->real_bits & neigh_node->real_packet_count
193 spinlock_t ogm_cnt_lock;
194 /* bcast_seqno_lock protects: bcast_bits & last_bcast_seqno */
195 spinlock_t bcast_seqno_lock;
196 atomic_t bond_candidates;
197 struct list_head bond_list;
200 #ifdef CONFIG_BATMAN_ADV_NC
201 struct list_head in_coding_list;
202 struct list_head out_coding_list;
203 spinlock_t in_coding_list_lock; /* Protects in_coding_list */
204 spinlock_t out_coding_list_lock; /* Protects out_coding_list */
206 struct batadv_frag_table_entry fragments[BATADV_FRAG_BUFFER_COUNT];
210 * enum batadv_orig_capabilities - orig node capabilities
211 * @BATADV_ORIG_CAPA_HAS_DAT: orig node has distributed arp table enabled
212 * @BATADV_ORIG_CAPA_HAS_NC: orig node has network coding enabled
214 enum batadv_orig_capabilities {
215 BATADV_ORIG_CAPA_HAS_DAT = BIT(0),
216 BATADV_ORIG_CAPA_HAS_NC = BIT(1),
220 * struct batadv_gw_node - structure for orig nodes announcing gw capabilities
221 * @list: list node for batadv_priv_gw::list
222 * @orig_node: pointer to corresponding orig node
223 * @bandwidth_down: advertised uplink download bandwidth
224 * @bandwidth_up: advertised uplink upload bandwidth
225 * @deleted: this struct is scheduled for deletion
226 * @refcount: number of contexts the object is used
227 * @rcu: struct used for freeing in an RCU-safe manner
229 struct batadv_gw_node {
230 struct hlist_node list;
231 struct batadv_orig_node *orig_node;
232 uint32_t bandwidth_down;
233 uint32_t bandwidth_up;
234 unsigned long deleted;
240 * struct batadv_neigh_node - structure for single hop neighbors
241 * @list: list node for batadv_orig_node::neigh_list
242 * @addr: mac address of neigh node
243 * @tq_recv: ring buffer of received TQ values from this neigh node
244 * @tq_index: ring buffer index
245 * @tq_avg: averaged tq of all tq values in the ring buffer (tq_recv)
246 * @last_ttl: last received ttl from this neigh node
247 * @bonding_list: list node for batadv_orig_node::bond_list
248 * @last_seen: when last packet via this neighbor was received
249 * @real_bits: bitfield containing the number of OGMs received from this neigh
250 * node (relative to orig_node->last_real_seqno)
251 * @real_packet_count: counted result of real_bits
252 * @orig_node: pointer to corresponding orig_node
253 * @if_incoming: pointer to incoming hard interface
254 * @lq_update_lock: lock protecting tq_recv & tq_index
255 * @refcount: number of contexts the object is used
256 * @rcu: struct used for freeing in an RCU-safe manner
258 struct batadv_neigh_node {
259 struct hlist_node list;
260 uint8_t addr[ETH_ALEN];
261 uint8_t tq_recv[BATADV_TQ_GLOBAL_WINDOW_SIZE];
265 struct list_head bonding_list;
266 unsigned long last_seen;
267 DECLARE_BITMAP(real_bits, BATADV_TQ_LOCAL_WINDOW_SIZE);
268 uint8_t real_packet_count;
269 struct batadv_orig_node *orig_node;
270 struct batadv_hard_iface *if_incoming;
271 spinlock_t lq_update_lock; /* protects tq_recv & tq_index */
277 * struct batadv_bcast_duplist_entry - structure for LAN broadcast suppression
278 * @orig[ETH_ALEN]: mac address of orig node orginating the broadcast
279 * @crc: crc32 checksum of broadcast payload
280 * @entrytime: time when the broadcast packet was received
282 #ifdef CONFIG_BATMAN_ADV_BLA
283 struct batadv_bcast_duplist_entry {
284 uint8_t orig[ETH_ALEN];
286 unsigned long entrytime;
291 * enum batadv_counters - indices for traffic counters
292 * @BATADV_CNT_TX: transmitted payload traffic packet counter
293 * @BATADV_CNT_TX_BYTES: transmitted payload traffic bytes counter
294 * @BATADV_CNT_TX_DROPPED: dropped transmission payload traffic packet counter
295 * @BATADV_CNT_RX: received payload traffic packet counter
296 * @BATADV_CNT_RX_BYTES: received payload traffic bytes counter
297 * @BATADV_CNT_FORWARD: forwarded payload traffic packet counter
298 * @BATADV_CNT_FORWARD_BYTES: forwarded payload traffic bytes counter
299 * @BATADV_CNT_MGMT_TX: transmitted routing protocol traffic packet counter
300 * @BATADV_CNT_MGMT_TX_BYTES: transmitted routing protocol traffic bytes counter
301 * @BATADV_CNT_MGMT_RX: received routing protocol traffic packet counter
302 * @BATADV_CNT_MGMT_RX_BYTES: received routing protocol traffic bytes counter
303 * @BATADV_CNT_FRAG_RX: received fragment traffic packet counter
304 * @BATADV_CNT_FRAG_RX_BYTES: received fragment traffic bytes counter
305 * @BATADV_CNT_FRAG_FWD: forwarded fragment traffic packet counter
306 * @BATADV_CNT_FRAG_FWD_BYTES: forwarded fragment traffic bytes counter
307 * @BATADV_CNT_TT_REQUEST_TX: transmitted tt req traffic packet counter
308 * @BATADV_CNT_TT_REQUEST_RX: received tt req traffic packet counter
309 * @BATADV_CNT_TT_RESPONSE_TX: transmitted tt resp traffic packet counter
310 * @BATADV_CNT_TT_RESPONSE_RX: received tt resp traffic packet counter
311 * @BATADV_CNT_TT_ROAM_ADV_TX: transmitted tt roam traffic packet counter
312 * @BATADV_CNT_TT_ROAM_ADV_RX: received tt roam traffic packet counter
313 * @BATADV_CNT_DAT_GET_TX: transmitted dht GET traffic packet counter
314 * @BATADV_CNT_DAT_GET_RX: received dht GET traffic packet counter
315 * @BATADV_CNT_DAT_PUT_TX: transmitted dht PUT traffic packet counter
316 * @BATADV_CNT_DAT_PUT_RX: received dht PUT traffic packet counter
317 * @BATADV_CNT_DAT_CACHED_REPLY_TX: transmitted dat cache reply traffic packet
319 * @BATADV_CNT_NC_CODE: transmitted nc-combined traffic packet counter
320 * @BATADV_CNT_NC_CODE_BYTES: transmitted nc-combined traffic bytes counter
321 * @BATADV_CNT_NC_RECODE: transmitted nc-recombined traffic packet counter
322 * @BATADV_CNT_NC_RECODE_BYTES: transmitted nc-recombined traffic bytes counter
323 * @BATADV_CNT_NC_BUFFER: counter for packets buffered for later nc decoding
324 * @BATADV_CNT_NC_DECODE: received and nc-decoded traffic packet counter
325 * @BATADV_CNT_NC_DECODE_BYTES: received and nc-decoded traffic bytes counter
326 * @BATADV_CNT_NC_DECODE_FAILED: received and decode-failed traffic packet
328 * @BATADV_CNT_NC_SNIFFED: counter for nc-decoded packets received in promisc
330 * @BATADV_CNT_NUM: number of traffic counters
332 enum batadv_counters {
335 BATADV_CNT_TX_DROPPED,
339 BATADV_CNT_FORWARD_BYTES,
341 BATADV_CNT_MGMT_TX_BYTES,
343 BATADV_CNT_MGMT_RX_BYTES,
345 BATADV_CNT_FRAG_RX_BYTES,
347 BATADV_CNT_FRAG_FWD_BYTES,
348 BATADV_CNT_TT_REQUEST_TX,
349 BATADV_CNT_TT_REQUEST_RX,
350 BATADV_CNT_TT_RESPONSE_TX,
351 BATADV_CNT_TT_RESPONSE_RX,
352 BATADV_CNT_TT_ROAM_ADV_TX,
353 BATADV_CNT_TT_ROAM_ADV_RX,
354 #ifdef CONFIG_BATMAN_ADV_DAT
355 BATADV_CNT_DAT_GET_TX,
356 BATADV_CNT_DAT_GET_RX,
357 BATADV_CNT_DAT_PUT_TX,
358 BATADV_CNT_DAT_PUT_RX,
359 BATADV_CNT_DAT_CACHED_REPLY_TX,
361 #ifdef CONFIG_BATMAN_ADV_NC
363 BATADV_CNT_NC_CODE_BYTES,
364 BATADV_CNT_NC_RECODE,
365 BATADV_CNT_NC_RECODE_BYTES,
366 BATADV_CNT_NC_BUFFER,
367 BATADV_CNT_NC_DECODE,
368 BATADV_CNT_NC_DECODE_BYTES,
369 BATADV_CNT_NC_DECODE_FAILED,
370 BATADV_CNT_NC_SNIFFED,
376 * struct batadv_priv_tt - per mesh interface translation table data
377 * @vn: translation table version number
378 * @ogm_append_cnt: counter of number of OGMs containing the local tt diff
379 * @local_changes: changes registered in an originator interval
380 * @changes_list: tracks tt local changes within an originator interval
381 * @local_hash: local translation table hash table
382 * @global_hash: global translation table hash table
383 * @req_list: list of pending & unanswered tt_requests
384 * @roam_list: list of the last roaming events of each client limiting the
385 * number of roaming events to avoid route flapping
386 * @changes_list_lock: lock protecting changes_list
387 * @req_list_lock: lock protecting req_list
388 * @roam_list_lock: lock protecting roam_list
389 * @local_entry_num: number of entries in the local hash table
390 * @local_crc: Checksum of the local table, recomputed before sending a new OGM
391 * @last_changeset: last tt changeset this host has generated
392 * @last_changeset_len: length of last tt changeset this host has generated
393 * @last_changeset_lock: lock protecting last_changeset & last_changeset_len
394 * @work: work queue callback item for translation table purging
396 struct batadv_priv_tt {
398 atomic_t ogm_append_cnt;
399 atomic_t local_changes;
400 struct list_head changes_list;
401 struct batadv_hashtable *local_hash;
402 struct batadv_hashtable *global_hash;
403 struct list_head req_list;
404 struct list_head roam_list;
405 spinlock_t changes_list_lock; /* protects changes */
406 spinlock_t req_list_lock; /* protects req_list */
407 spinlock_t roam_list_lock; /* protects roam_list */
408 atomic_t local_entry_num;
410 unsigned char *last_changeset;
411 int16_t last_changeset_len;
412 /* protects last_changeset & last_changeset_len */
413 spinlock_t last_changeset_lock;
414 struct delayed_work work;
418 * struct batadv_priv_bla - per mesh interface bridge loope avoidance data
419 * @num_requests; number of bla requests in flight
420 * @claim_hash: hash table containing mesh nodes this host has claimed
421 * @backbone_hash: hash table containing all detected backbone gateways
422 * @bcast_duplist: recently received broadcast packets array (for broadcast
423 * duplicate suppression)
424 * @bcast_duplist_curr: index of last broadcast packet added to bcast_duplist
425 * @bcast_duplist_lock: lock protecting bcast_duplist & bcast_duplist_curr
426 * @claim_dest: local claim data (e.g. claim group)
427 * @work: work queue callback item for cleanups & bla announcements
429 #ifdef CONFIG_BATMAN_ADV_BLA
430 struct batadv_priv_bla {
431 atomic_t num_requests;
432 struct batadv_hashtable *claim_hash;
433 struct batadv_hashtable *backbone_hash;
434 struct batadv_bcast_duplist_entry bcast_duplist[BATADV_DUPLIST_SIZE];
435 int bcast_duplist_curr;
436 /* protects bcast_duplist & bcast_duplist_curr */
437 spinlock_t bcast_duplist_lock;
438 struct batadv_bla_claim_dst claim_dest;
439 struct delayed_work work;
444 * struct batadv_debug_log - debug logging data
445 * @log_buff: buffer holding the logs (ring bufer)
446 * @log_start: index of next character to read
447 * @log_end: index of next character to write
448 * @lock: lock protecting log_buff, log_start & log_end
449 * @queue_wait: log reader's wait queue
451 #ifdef CONFIG_BATMAN_ADV_DEBUG
452 struct batadv_priv_debug_log {
453 char log_buff[BATADV_LOG_BUF_LEN];
454 unsigned long log_start;
455 unsigned long log_end;
456 spinlock_t lock; /* protects log_buff, log_start and log_end */
457 wait_queue_head_t queue_wait;
462 * struct batadv_priv_gw - per mesh interface gateway data
463 * @list: list of available gateway nodes
464 * @list_lock: lock protecting gw_list & curr_gw
465 * @curr_gw: pointer to currently selected gateway node
466 * @bandwidth_down: advertised uplink download bandwidth (if gw_mode server)
467 * @bandwidth_up: advertised uplink upload bandwidth (if gw_mode server)
468 * @reselect: bool indicating a gateway re-selection is in progress
470 struct batadv_priv_gw {
471 struct hlist_head list;
472 spinlock_t list_lock; /* protects gw_list & curr_gw */
473 struct batadv_gw_node __rcu *curr_gw; /* rcu protected pointer */
474 atomic_t bandwidth_down;
475 atomic_t bandwidth_up;
480 * struct batadv_priv_tvlv - per mesh interface tvlv data
481 * @container_list: list of registered tvlv containers to be sent with each OGM
482 * @handler_list: list of the various tvlv content handlers
483 * @container_list_lock: protects tvlv container list access
484 * @handler_list_lock: protects handler list access
486 struct batadv_priv_tvlv {
487 struct hlist_head container_list;
488 struct hlist_head handler_list;
489 spinlock_t container_list_lock; /* protects container_list */
490 spinlock_t handler_list_lock; /* protects handler_list */
494 * struct batadv_priv_dat - per mesh interface DAT private data
495 * @addr: node DAT address
496 * @hash: hashtable representing the local ARP cache
497 * @work: work queue callback item for cache purging
499 #ifdef CONFIG_BATMAN_ADV_DAT
500 struct batadv_priv_dat {
501 batadv_dat_addr_t addr;
502 struct batadv_hashtable *hash;
503 struct delayed_work work;
508 * struct batadv_priv_nc - per mesh interface network coding private data
509 * @work: work queue callback item for cleanup
510 * @debug_dir: dentry for nc subdir in batman-adv directory in debugfs
511 * @min_tq: only consider neighbors for encoding if neigh_tq > min_tq
512 * @max_fwd_delay: maximum packet forward delay to allow coding of packets
513 * @max_buffer_time: buffer time for sniffed packets used to decoding
514 * @timestamp_fwd_flush: timestamp of last forward packet queue flush
515 * @timestamp_sniffed_purge: timestamp of last sniffed packet queue purge
516 * @coding_hash: Hash table used to buffer skbs while waiting for another
517 * incoming skb to code it with. Skbs are added to the buffer just before being
518 * forwarded in routing.c
519 * @decoding_hash: Hash table used to buffer skbs that might be needed to decode
520 * a received coded skb. The buffer is used for 1) skbs arriving on the
521 * soft-interface; 2) skbs overheard on the hard-interface; and 3) skbs
522 * forwarded by batman-adv.
524 struct batadv_priv_nc {
525 struct delayed_work work;
526 struct dentry *debug_dir;
530 unsigned long timestamp_fwd_flush;
531 unsigned long timestamp_sniffed_purge;
532 struct batadv_hashtable *coding_hash;
533 struct batadv_hashtable *decoding_hash;
537 * struct batadv_priv - per mesh interface data
538 * @mesh_state: current status of the mesh (inactive/active/deactivating)
539 * @soft_iface: net device which holds this struct as private data
540 * @stats: structure holding the data for the ndo_get_stats() call
541 * @bat_counters: mesh internal traffic statistic counters (see batadv_counters)
542 * @aggregated_ogms: bool indicating whether OGM aggregation is enabled
543 * @bonding: bool indicating whether traffic bonding is enabled
544 * @fragmentation: bool indicating whether traffic fragmentation is enabled
545 * @ap_isolation: bool indicating whether ap isolation is enabled
546 * @bridge_loop_avoidance: bool indicating whether bridge loop avoidance is
548 * @distributed_arp_table: bool indicating whether distributed ARP table is
550 * @gw_mode: gateway operation: off, client or server (see batadv_gw_modes)
551 * @gw_sel_class: gateway selection class (applies if gw_mode client)
552 * @orig_interval: OGM broadcast interval in milliseconds
553 * @hop_penalty: penalty which will be applied to an OGM's tq-field on every hop
554 * @log_level: configured log level (see batadv_dbg_level)
555 * @bcast_seqno: last sent broadcast packet sequence number
556 * @bcast_queue_left: number of remaining buffered broadcast packet slots
557 * @batman_queue_left: number of remaining OGM packet slots
558 * @num_ifaces: number of interfaces assigned to this mesh interface
559 * @mesh_obj: kobject for sysfs mesh subdirectory
560 * @debug_dir: dentry for debugfs batman-adv subdirectory
561 * @forw_bat_list: list of aggregated OGMs that will be forwarded
562 * @forw_bcast_list: list of broadcast packets that will be rebroadcasted
563 * @orig_hash: hash table containing mesh participants (orig nodes)
564 * @forw_bat_list_lock: lock protecting forw_bat_list
565 * @forw_bcast_list_lock: lock protecting forw_bcast_list
566 * @orig_work: work queue callback item for orig node purging
567 * @cleanup_work: work queue callback item for soft interface deinit
568 * @primary_if: one of the hard interfaces assigned to this mesh interface
569 * becomes the primary interface
570 * @bat_algo_ops: routing algorithm used by this mesh interface
571 * @bla: bridge loope avoidance data
572 * @debug_log: holding debug logging relevant data
574 * @tt: translation table data
575 * @tvlv: type-version-length-value data
576 * @dat: distributed arp table data
577 * @network_coding: bool indicating whether network coding is enabled
578 * @batadv_priv_nc: network coding data
582 struct net_device *soft_iface;
583 struct net_device_stats stats;
584 uint64_t __percpu *bat_counters; /* Per cpu counters */
585 atomic_t aggregated_ogms;
587 atomic_t fragmentation;
588 atomic_t ap_isolation;
589 #ifdef CONFIG_BATMAN_ADV_BLA
590 atomic_t bridge_loop_avoidance;
592 #ifdef CONFIG_BATMAN_ADV_DAT
593 atomic_t distributed_arp_table;
596 atomic_t gw_sel_class;
597 atomic_t orig_interval;
598 atomic_t hop_penalty;
599 #ifdef CONFIG_BATMAN_ADV_DEBUG
602 atomic_t bcast_seqno;
603 atomic_t bcast_queue_left;
604 atomic_t batman_queue_left;
606 struct kobject *mesh_obj;
607 struct dentry *debug_dir;
608 struct hlist_head forw_bat_list;
609 struct hlist_head forw_bcast_list;
610 struct batadv_hashtable *orig_hash;
611 spinlock_t forw_bat_list_lock; /* protects forw_bat_list */
612 spinlock_t forw_bcast_list_lock; /* protects forw_bcast_list */
613 struct delayed_work orig_work;
614 struct work_struct cleanup_work;
615 struct batadv_hard_iface __rcu *primary_if; /* rcu protected pointer */
616 struct batadv_algo_ops *bat_algo_ops;
617 #ifdef CONFIG_BATMAN_ADV_BLA
618 struct batadv_priv_bla bla;
620 #ifdef CONFIG_BATMAN_ADV_DEBUG
621 struct batadv_priv_debug_log *debug_log;
623 struct batadv_priv_gw gw;
624 struct batadv_priv_tt tt;
625 struct batadv_priv_tvlv tvlv;
626 #ifdef CONFIG_BATMAN_ADV_DAT
627 struct batadv_priv_dat dat;
629 #ifdef CONFIG_BATMAN_ADV_NC
630 atomic_t network_coding;
631 struct batadv_priv_nc nc;
632 #endif /* CONFIG_BATMAN_ADV_NC */
636 * struct batadv_socket_client - layer2 icmp socket client data
637 * @queue_list: packet queue for packets destined for this socket client
638 * @queue_len: number of packets in the packet queue (queue_list)
639 * @index: socket client's index in the batadv_socket_client_hash
640 * @lock: lock protecting queue_list, queue_len & index
641 * @queue_wait: socket client's wait queue
642 * @bat_priv: pointer to soft_iface this client belongs to
644 struct batadv_socket_client {
645 struct list_head queue_list;
646 unsigned int queue_len;
648 spinlock_t lock; /* protects queue_list, queue_len & index */
649 wait_queue_head_t queue_wait;
650 struct batadv_priv *bat_priv;
654 * struct batadv_socket_packet - layer2 icmp packet for socket client
655 * @list: list node for batadv_socket_client::queue_list
656 * @icmp_len: size of the layer2 icmp packet
657 * @icmp_packet: layer2 icmp packet
659 struct batadv_socket_packet {
660 struct list_head list;
662 struct batadv_icmp_packet_rr icmp_packet;
666 * struct batadv_bla_backbone_gw - batman-adv gateway bridged into the LAN
667 * @orig: originator address of backbone node (mac address of primary iface)
668 * @vid: vlan id this gateway was detected on
669 * @hash_entry: hlist node for batadv_priv_bla::backbone_hash
670 * @bat_priv: pointer to soft_iface this backbone gateway belongs to
671 * @lasttime: last time we heard of this backbone gw
672 * @wait_periods: grace time for bridge forward delays and bla group forming at
673 * bootup phase - no bcast traffic is formwared until it has elapsed
674 * @request_sent: if this bool is set to true we are out of sync with this
675 * backbone gateway - no bcast traffic is formwared until the situation was
677 * @crc: crc16 checksum over all claims
678 * @refcount: number of contexts the object is used
679 * @rcu: struct used for freeing in an RCU-safe manner
681 #ifdef CONFIG_BATMAN_ADV_BLA
682 struct batadv_bla_backbone_gw {
683 uint8_t orig[ETH_ALEN];
685 struct hlist_node hash_entry;
686 struct batadv_priv *bat_priv;
687 unsigned long lasttime;
688 atomic_t wait_periods;
689 atomic_t request_sent;
696 * struct batadv_bla_claim - claimed non-mesh client structure
697 * @addr: mac address of claimed non-mesh client
698 * @vid: vlan id this client was detected on
699 * @batadv_bla_backbone_gw: pointer to backbone gw claiming this client
700 * @lasttime: last time we heard of claim (locals only)
701 * @hash_entry: hlist node for batadv_priv_bla::claim_hash
702 * @refcount: number of contexts the object is used
703 * @rcu: struct used for freeing in an RCU-safe manner
705 struct batadv_bla_claim {
706 uint8_t addr[ETH_ALEN];
708 struct batadv_bla_backbone_gw *backbone_gw;
709 unsigned long lasttime;
710 struct hlist_node hash_entry;
717 * struct batadv_tt_common_entry - tt local & tt global common data
718 * @addr: mac address of non-mesh client
719 * @hash_entry: hlist node for batadv_priv_tt::local_hash or for
720 * batadv_priv_tt::global_hash
721 * @flags: various state handling flags (see batadv_tt_client_flags)
722 * @added_at: timestamp used for purging stale tt common entries
723 * @refcount: number of contexts the object is used
724 * @rcu: struct used for freeing in an RCU-safe manner
726 struct batadv_tt_common_entry {
727 uint8_t addr[ETH_ALEN];
728 struct hlist_node hash_entry;
730 unsigned long added_at;
736 * struct batadv_tt_local_entry - translation table local entry data
737 * @common: general translation table data
738 * @last_seen: timestamp used for purging stale tt local entries
740 struct batadv_tt_local_entry {
741 struct batadv_tt_common_entry common;
742 unsigned long last_seen;
746 * struct batadv_tt_global_entry - translation table global entry data
747 * @common: general translation table data
748 * @orig_list: list of orig nodes announcing this non-mesh client
749 * @list_lock: lock protecting orig_list
750 * @roam_at: time at which TT_GLOBAL_ROAM was set
752 struct batadv_tt_global_entry {
753 struct batadv_tt_common_entry common;
754 struct hlist_head orig_list;
755 spinlock_t list_lock; /* protects orig_list */
756 unsigned long roam_at;
760 * struct batadv_tt_orig_list_entry - orig node announcing a non-mesh client
761 * @orig_node: pointer to orig node announcing this non-mesh client
762 * @ttvn: translation table version number which added the non-mesh client
763 * @list: list node for batadv_tt_global_entry::orig_list
764 * @refcount: number of contexts the object is used
765 * @rcu: struct used for freeing in an RCU-safe manner
767 struct batadv_tt_orig_list_entry {
768 struct batadv_orig_node *orig_node;
770 struct hlist_node list;
776 * struct batadv_tt_change_node - structure for tt changes occured
777 * @list: list node for batadv_priv_tt::changes_list
778 * @change: holds the actual translation table diff data
780 struct batadv_tt_change_node {
781 struct list_head list;
782 struct batadv_tvlv_tt_change change;
786 * struct batadv_tt_req_node - data to keep track of the tt requests in flight
787 * @addr: mac address address of the originator this request was sent to
788 * @issued_at: timestamp used for purging stale tt requests
789 * @list: list node for batadv_priv_tt::req_list
791 struct batadv_tt_req_node {
792 uint8_t addr[ETH_ALEN];
793 unsigned long issued_at;
794 struct list_head list;
798 * struct batadv_tt_roam_node - roaming client data
799 * @addr: mac address of the client in the roaming phase
800 * @counter: number of allowed roaming events per client within a single
801 * OGM interval (changes are committed with each OGM)
802 * @first_time: timestamp used for purging stale roaming node entries
803 * @list: list node for batadv_priv_tt::roam_list
805 struct batadv_tt_roam_node {
806 uint8_t addr[ETH_ALEN];
808 unsigned long first_time;
809 struct list_head list;
813 * struct batadv_nc_node - network coding node
814 * @list: next and prev pointer for the list handling
815 * @addr: the node's mac address
816 * @refcount: number of contexts the object is used by
817 * @rcu: struct used for freeing in an RCU-safe manner
818 * @orig_node: pointer to corresponding orig node struct
819 * @last_seen: timestamp of last ogm received from this node
821 struct batadv_nc_node {
822 struct list_head list;
823 uint8_t addr[ETH_ALEN];
826 struct batadv_orig_node *orig_node;
827 unsigned long last_seen;
831 * struct batadv_nc_path - network coding path
832 * @hash_entry: next and prev pointer for the list handling
833 * @rcu: struct used for freeing in an RCU-safe manner
834 * @refcount: number of contexts the object is used by
835 * @packet_list: list of buffered packets for this path
836 * @packet_list_lock: access lock for packet list
837 * @next_hop: next hop (destination) of path
838 * @prev_hop: previous hop (source) of path
839 * @last_valid: timestamp for last validation of path
841 struct batadv_nc_path {
842 struct hlist_node hash_entry;
845 struct list_head packet_list;
846 spinlock_t packet_list_lock; /* Protects packet_list */
847 uint8_t next_hop[ETH_ALEN];
848 uint8_t prev_hop[ETH_ALEN];
849 unsigned long last_valid;
853 * struct batadv_nc_packet - network coding packet used when coding and
855 * @list: next and prev pointer for the list handling
856 * @packet_id: crc32 checksum of skb data
857 * @timestamp: field containing the info when the packet was added to path
858 * @neigh_node: pointer to original next hop neighbor of skb
859 * @skb: skb which can be encoded or used for decoding
860 * @nc_path: pointer to path this nc packet is attached to
862 struct batadv_nc_packet {
863 struct list_head list;
865 unsigned long timestamp;
866 struct batadv_neigh_node *neigh_node;
868 struct batadv_nc_path *nc_path;
872 * batadv_skb_cb - control buffer structure used to store private data relevant
873 * to batman-adv in the skb->cb buffer in skbs.
874 * @decoded: Marks a skb as decoded, which is checked when searching for coding
875 * opportunities in network-coding.c
877 struct batadv_skb_cb {
882 * struct batadv_forw_packet - structure for bcast packets to be sent/forwarded
883 * @list: list node for batadv_socket_client::queue_list
884 * @send_time: execution time for delayed_work (packet sending)
885 * @own: bool for locally generated packets (local OGMs are re-scheduled after
887 * @skb: bcast packet's skb buffer
888 * @packet_len: size of aggregated OGM packet inside the skb buffer
889 * @direct_link_flags: direct link flags for aggregated OGM packets
890 * @num_packets: counter for bcast packet retransmission
891 * @delayed_work: work queue callback item for packet sending
892 * @if_incoming: pointer incoming hard-iface or primary iface if locally
895 struct batadv_forw_packet {
896 struct hlist_node list;
897 unsigned long send_time;
901 uint32_t direct_link_flags;
903 struct delayed_work delayed_work;
904 struct batadv_hard_iface *if_incoming;
908 * struct batadv_algo_ops - mesh algorithm callbacks
909 * @list: list node for the batadv_algo_list
910 * @name: name of the algorithm
911 * @bat_iface_enable: init routing info when hard-interface is enabled
912 * @bat_iface_disable: de-init routing info when hard-interface is disabled
913 * @bat_iface_update_mac: (re-)init mac addresses of the protocol information
914 * belonging to this hard-interface
915 * @bat_primary_iface_set: called when primary interface is selected / changed
916 * @bat_ogm_schedule: prepare a new outgoing OGM for the send queue
917 * @bat_ogm_emit: send scheduled OGM
919 struct batadv_algo_ops {
920 struct hlist_node list;
922 int (*bat_iface_enable)(struct batadv_hard_iface *hard_iface);
923 void (*bat_iface_disable)(struct batadv_hard_iface *hard_iface);
924 void (*bat_iface_update_mac)(struct batadv_hard_iface *hard_iface);
925 void (*bat_primary_iface_set)(struct batadv_hard_iface *hard_iface);
926 void (*bat_ogm_schedule)(struct batadv_hard_iface *hard_iface);
927 void (*bat_ogm_emit)(struct batadv_forw_packet *forw_packet);
931 * struct batadv_dat_entry - it is a single entry of batman-adv ARP backend. It
932 * is used to stored ARP entries needed for the global DAT cache
933 * @ip: the IPv4 corresponding to this DAT/ARP entry
934 * @mac_addr: the MAC address associated to the stored IPv4
935 * @last_update: time in jiffies when this entry was refreshed last time
936 * @hash_entry: hlist node for batadv_priv_dat::hash
937 * @refcount: number of contexts the object is used
938 * @rcu: struct used for freeing in an RCU-safe manner
940 struct batadv_dat_entry {
942 uint8_t mac_addr[ETH_ALEN];
943 unsigned long last_update;
944 struct hlist_node hash_entry;
950 * struct batadv_dat_candidate - candidate destination for DAT operations
951 * @type: the type of the selected candidate. It can one of the following:
952 * - BATADV_DAT_CANDIDATE_NOT_FOUND
953 * - BATADV_DAT_CANDIDATE_ORIG
954 * @orig_node: if type is BATADV_DAT_CANDIDATE_ORIG this field points to the
955 * corresponding originator node structure
957 struct batadv_dat_candidate {
959 struct batadv_orig_node *orig_node;
963 * struct batadv_tvlv_container - container for tvlv appended to OGMs
964 * @list: hlist node for batadv_priv_tvlv::container_list
965 * @tvlv_hdr: tvlv header information needed to construct the tvlv
966 * @value_len: length of the buffer following this struct which contains
967 * the actual tvlv payload
968 * @refcount: number of contexts the object is used
970 struct batadv_tvlv_container {
971 struct hlist_node list;
972 struct batadv_tvlv_hdr tvlv_hdr;
977 * struct batadv_tvlv_handler - handler for specific tvlv type and version
978 * @list: hlist node for batadv_priv_tvlv::handler_list
979 * @ogm_handler: handler callback which is given the tvlv payload to process on
980 * incoming OGM packets
981 * @unicast_handler: handler callback which is given the tvlv payload to process
982 * on incoming unicast tvlv packets
983 * @type: tvlv type this handler feels responsible for
984 * @version: tvlv version this handler feels responsible for
985 * @flags: tvlv handler flags
986 * @refcount: number of contexts the object is used
987 * @rcu: struct used for freeing in an RCU-safe manner
989 struct batadv_tvlv_handler {
990 struct hlist_node list;
991 void (*ogm_handler)(struct batadv_priv *bat_priv,
992 struct batadv_orig_node *orig,
994 void *tvlv_value, uint16_t tvlv_value_len);
995 int (*unicast_handler)(struct batadv_priv *bat_priv,
996 uint8_t *src, uint8_t *dst,
997 void *tvlv_value, uint16_t tvlv_value_len);
1002 struct rcu_head rcu;
1006 * enum batadv_tvlv_handler_flags - tvlv handler flags definitions
1007 * @BATADV_TVLV_HANDLER_OGM_CIFNOTFND: tvlv ogm processing function will call
1008 * this handler even if its type was not found (with no data)
1009 * @BATADV_TVLV_HANDLER_OGM_CALLED: interval tvlv handling flag - the API marks
1010 * a handler as being called, so it won't be called if the
1011 * BATADV_TVLV_HANDLER_OGM_CIFNOTFND flag was set
1013 enum batadv_tvlv_handler_flags {
1014 BATADV_TVLV_HANDLER_OGM_CIFNOTFND = BIT(1),
1015 BATADV_TVLV_HANDLER_OGM_CALLED = BIT(2),
1018 #endif /* _NET_BATMAN_ADV_TYPES_H_ */