1 /* Copyright (C) 2007-2015 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, see <http://www.gnu.org/licenses/>.
18 #ifndef _NET_BATMAN_ADV_TYPES_H_
19 #define _NET_BATMAN_ADV_TYPES_H_
21 #ifndef _NET_BATMAN_ADV_MAIN_H_
22 #error only "main.h" can be included directly
25 #include <linux/bitops.h>
26 #include <linux/compiler.h>
27 #include <linux/if_ether.h>
28 #include <linux/netdevice.h>
29 #include <linux/sched.h> /* for linux/wait.h */
30 #include <linux/spinlock.h>
31 #include <linux/types.h>
32 #include <linux/wait.h>
33 #include <linux/workqueue.h>
39 #ifdef CONFIG_BATMAN_ADV_DAT
42 * batadv_dat_addr_t - it is the type used for all DHT addresses. If it is
43 * changed, BATADV_DAT_ADDR_MAX is changed as well.
45 * *Please be careful: batadv_dat_addr_t must be UNSIGNED*
47 #define batadv_dat_addr_t u16
49 #endif /* CONFIG_BATMAN_ADV_DAT */
52 * enum batadv_dhcp_recipient - dhcp destination
53 * @BATADV_DHCP_NO: packet is not a dhcp message
54 * @BATADV_DHCP_TO_SERVER: dhcp message is directed to a server
55 * @BATADV_DHCP_TO_CLIENT: dhcp message is directed to a client
57 enum batadv_dhcp_recipient
{
59 BATADV_DHCP_TO_SERVER
,
60 BATADV_DHCP_TO_CLIENT
,
64 * BATADV_TT_REMOTE_MASK - bitmask selecting the flags that are sent over the
67 #define BATADV_TT_REMOTE_MASK 0x00FF
70 * BATADV_TT_SYNC_MASK - bitmask of the flags that need to be kept in sync
71 * among the nodes. These flags are used to compute the global/local CRC
73 #define BATADV_TT_SYNC_MASK 0x00F0
76 * struct batadv_hard_iface_bat_iv - per hard interface B.A.T.M.A.N. IV data
77 * @ogm_buff: buffer holding the OGM packet
78 * @ogm_buff_len: length of the OGM packet buffer
79 * @ogm_seqno: OGM sequence number - used to identify each OGM
81 struct batadv_hard_iface_bat_iv
{
82 unsigned char *ogm_buff
;
88 * struct batadv_hard_iface - network device known to batman-adv
89 * @list: list node for batadv_hardif_list
90 * @if_num: identificator of the interface
91 * @if_status: status of the interface for batman-adv
92 * @net_dev: pointer to the net_device
93 * @num_bcasts: number of payload re-broadcasts on this interface (ARQ)
94 * @hardif_obj: kobject of the per interface sysfs "mesh" directory
95 * @refcount: number of contexts the object is used
96 * @batman_adv_ptype: packet type describing packets that should be processed by
97 * batman-adv for this interface
98 * @soft_iface: the batman-adv interface which uses this network interface
99 * @rcu: struct used for freeing in an RCU-safe manner
100 * @bat_iv: BATMAN IV specific per hard interface data
101 * @cleanup_work: work queue callback item for hard interface deinit
102 * @debug_dir: dentry for nc subdir in batman-adv directory in debugfs
103 * @neigh_list: list of unique single hop neighbors via this interface
104 * @neigh_list_lock: lock protecting neigh_list
106 struct batadv_hard_iface
{
107 struct list_head list
;
110 struct net_device
*net_dev
;
112 struct kobject
*hardif_obj
;
114 struct packet_type batman_adv_ptype
;
115 struct net_device
*soft_iface
;
117 struct batadv_hard_iface_bat_iv bat_iv
;
118 struct work_struct cleanup_work
;
119 struct dentry
*debug_dir
;
120 struct hlist_head neigh_list
;
121 /* neigh_list_lock protects: neigh_list */
122 spinlock_t neigh_list_lock
;
126 * struct batadv_orig_ifinfo - originator info per outgoing interface
127 * @list: list node for orig_node::ifinfo_list
128 * @if_outgoing: pointer to outgoing hard interface
129 * @router: router that should be used to reach this originator
130 * @last_real_seqno: last and best known sequence number
131 * @last_ttl: ttl of last received packet
132 * @batman_seqno_reset: time when the batman seqno window was reset
133 * @refcount: number of contexts the object is used
134 * @rcu: struct used for freeing in an RCU-safe manner
136 struct batadv_orig_ifinfo
{
137 struct hlist_node list
;
138 struct batadv_hard_iface
*if_outgoing
;
139 struct batadv_neigh_node __rcu
*router
; /* rcu protected pointer */
142 unsigned long batman_seqno_reset
;
148 * struct batadv_frag_table_entry - head in the fragment buffer table
149 * @head: head of list with fragments
150 * @lock: lock to protect the list of fragments
151 * @timestamp: time (jiffie) of last received fragment
152 * @seqno: sequence number of the fragments in the list
153 * @size: accumulated size of packets in list
154 * @total_size: expected size of the assembled packet
156 struct batadv_frag_table_entry
{
157 struct hlist_head head
;
158 spinlock_t lock
; /* protects head */
159 unsigned long timestamp
;
166 * struct batadv_frag_list_entry - entry in a list of fragments
167 * @list: list node information
169 * @no: fragment number in the set
171 struct batadv_frag_list_entry
{
172 struct hlist_node list
;
178 * struct batadv_vlan_tt - VLAN specific TT attributes
179 * @crc: CRC32 checksum of the entries belonging to this vlan
180 * @num_entries: number of TT entries for this VLAN
182 struct batadv_vlan_tt
{
184 atomic_t num_entries
;
188 * struct batadv_orig_node_vlan - VLAN specific data per orig_node
189 * @vid: the VLAN identifier
190 * @tt: VLAN specific TT attributes
191 * @list: list node for orig_node::vlan_list
192 * @refcount: number of context where this object is currently in use
193 * @rcu: struct used for freeing in a RCU-safe manner
195 struct batadv_orig_node_vlan
{
197 struct batadv_vlan_tt tt
;
198 struct hlist_node list
;
204 * struct batadv_orig_bat_iv - B.A.T.M.A.N. IV private orig_node members
205 * @bcast_own: set of bitfields (one per hard interface) where each one counts
206 * the number of our OGMs this orig_node rebroadcasted "back" to us (relative
207 * to last_real_seqno). Every bitfield is BATADV_TQ_LOCAL_WINDOW_SIZE bits long.
208 * @bcast_own_sum: sum of bcast_own
209 * @ogm_cnt_lock: lock protecting bcast_own, bcast_own_sum,
210 * neigh_node->bat_iv.real_bits & neigh_node->bat_iv.real_packet_count
212 struct batadv_orig_bat_iv
{
213 unsigned long *bcast_own
;
215 /* ogm_cnt_lock protects: bcast_own, bcast_own_sum,
216 * neigh_node->bat_iv.real_bits & neigh_node->bat_iv.real_packet_count
218 spinlock_t ogm_cnt_lock
;
222 * struct batadv_orig_node - structure for orig_list maintaining nodes of mesh
223 * @orig: originator ethernet address
224 * @ifinfo_list: list for routers per outgoing interface
225 * @last_bonding_candidate: pointer to last ifinfo of last used router
226 * @batadv_dat_addr_t: address of the orig node in the distributed hash
227 * @last_seen: time when last packet from this node was received
228 * @bcast_seqno_reset: time when the broadcast seqno window was reset
229 * @mcast_handler_lock: synchronizes mcast-capability and -flag changes
230 * @mcast_flags: multicast flags announced by the orig node
231 * @mcast_want_all_unsnoop_node: a list node for the
232 * mcast.want_all_unsnoopables list
233 * @mcast_want_all_ipv4_node: a list node for the mcast.want_all_ipv4 list
234 * @mcast_want_all_ipv6_node: a list node for the mcast.want_all_ipv6 list
235 * @capabilities: announced capabilities of this originator
236 * @capa_initialized: bitfield to remember whether a capability was initialized
237 * @last_ttvn: last seen translation table version number
238 * @tt_buff: last tt changeset this node received from the orig node
239 * @tt_buff_len: length of the last tt changeset this node received from the
241 * @tt_buff_lock: lock that protects tt_buff and tt_buff_len
242 * @tt_lock: prevents from updating the table while reading it. Table update is
243 * made up by two operations (data structure update and metdata -CRC/TTVN-
244 * recalculation) and they have to be executed atomically in order to avoid
245 * another thread to read the table/metadata between those.
246 * @bcast_bits: bitfield containing the info which payload broadcast originated
247 * from this orig node this host already has seen (relative to
249 * @last_bcast_seqno: last broadcast sequence number received by this host
250 * @neigh_list: list of potential next hop neighbor towards this orig node
251 * @neigh_list_lock: lock protecting neigh_list and router
252 * @hash_entry: hlist node for batadv_priv::orig_hash
253 * @bat_priv: pointer to soft_iface this orig node belongs to
254 * @bcast_seqno_lock: lock protecting bcast_bits & last_bcast_seqno
255 * @refcount: number of contexts the object is used
256 * @rcu: struct used for freeing in an RCU-safe manner
257 * @in_coding_list: list of nodes this orig can hear
258 * @out_coding_list: list of nodes that can hear this orig
259 * @in_coding_list_lock: protects in_coding_list
260 * @out_coding_list_lock: protects out_coding_list
261 * @fragments: array with heads for fragment chains
262 * @vlan_list: a list of orig_node_vlan structs, one per VLAN served by the
263 * originator represented by this object
264 * @vlan_list_lock: lock protecting vlan_list
265 * @bat_iv: B.A.T.M.A.N. IV private structure
267 struct batadv_orig_node
{
269 struct hlist_head ifinfo_list
;
270 struct batadv_orig_ifinfo
*last_bonding_candidate
;
271 #ifdef CONFIG_BATMAN_ADV_DAT
272 batadv_dat_addr_t dat_addr
;
274 unsigned long last_seen
;
275 unsigned long bcast_seqno_reset
;
276 #ifdef CONFIG_BATMAN_ADV_MCAST
277 /* synchronizes mcast tvlv specific orig changes */
278 spinlock_t mcast_handler_lock
;
280 struct hlist_node mcast_want_all_unsnoopables_node
;
281 struct hlist_node mcast_want_all_ipv4_node
;
282 struct hlist_node mcast_want_all_ipv6_node
;
284 unsigned long capabilities
;
285 unsigned long capa_initialized
;
287 unsigned char *tt_buff
;
289 spinlock_t tt_buff_lock
; /* protects tt_buff & tt_buff_len */
290 /* prevents from changing the table while reading it */
292 DECLARE_BITMAP(bcast_bits
, BATADV_TQ_LOCAL_WINDOW_SIZE
);
293 u32 last_bcast_seqno
;
294 struct hlist_head neigh_list
;
295 /* neigh_list_lock protects: neigh_list and router */
296 spinlock_t neigh_list_lock
;
297 struct hlist_node hash_entry
;
298 struct batadv_priv
*bat_priv
;
299 /* bcast_seqno_lock protects: bcast_bits & last_bcast_seqno */
300 spinlock_t bcast_seqno_lock
;
303 #ifdef CONFIG_BATMAN_ADV_NC
304 struct list_head in_coding_list
;
305 struct list_head out_coding_list
;
306 spinlock_t in_coding_list_lock
; /* Protects in_coding_list */
307 spinlock_t out_coding_list_lock
; /* Protects out_coding_list */
309 struct batadv_frag_table_entry fragments
[BATADV_FRAG_BUFFER_COUNT
];
310 struct hlist_head vlan_list
;
311 spinlock_t vlan_list_lock
; /* protects vlan_list */
312 struct batadv_orig_bat_iv bat_iv
;
316 * enum batadv_orig_capabilities - orig node capabilities
317 * @BATADV_ORIG_CAPA_HAS_DAT: orig node has distributed arp table enabled
318 * @BATADV_ORIG_CAPA_HAS_NC: orig node has network coding enabled
319 * @BATADV_ORIG_CAPA_HAS_TT: orig node has tt capability
320 * @BATADV_ORIG_CAPA_HAS_MCAST: orig node has some multicast capability
321 * (= orig node announces a tvlv of type BATADV_TVLV_MCAST)
323 enum batadv_orig_capabilities
{
324 BATADV_ORIG_CAPA_HAS_DAT
,
325 BATADV_ORIG_CAPA_HAS_NC
,
326 BATADV_ORIG_CAPA_HAS_TT
,
327 BATADV_ORIG_CAPA_HAS_MCAST
,
331 * struct batadv_gw_node - structure for orig nodes announcing gw capabilities
332 * @list: list node for batadv_priv_gw::list
333 * @orig_node: pointer to corresponding orig node
334 * @bandwidth_down: advertised uplink download bandwidth
335 * @bandwidth_up: advertised uplink upload bandwidth
336 * @refcount: number of contexts the object is used
337 * @rcu: struct used for freeing in an RCU-safe manner
339 struct batadv_gw_node
{
340 struct hlist_node list
;
341 struct batadv_orig_node
*orig_node
;
349 * batadv_hardif_neigh_node - unique neighbor per hard interface
350 * @list: list node for batadv_hard_iface::neigh_list
351 * @addr: the MAC address of the neighboring interface
352 * @if_incoming: pointer to incoming hard interface
353 * @refcount: number of contexts the object is used
354 * @rcu: struct used for freeing in a RCU-safe manner
356 struct batadv_hardif_neigh_node
{
357 struct hlist_node list
;
359 struct batadv_hard_iface
*if_incoming
;
360 unsigned long last_seen
;
366 * struct batadv_neigh_node - structure for single hops neighbors
367 * @list: list node for batadv_orig_node::neigh_list
368 * @orig_node: pointer to corresponding orig_node
369 * @addr: the MAC address of the neighboring interface
370 * @ifinfo_list: list for routing metrics per outgoing interface
371 * @ifinfo_lock: lock protecting private ifinfo members and list
372 * @if_incoming: pointer to incoming hard interface
373 * @last_seen: when last packet via this neighbor was received
374 * @last_ttl: last received ttl from this neigh node
375 * @rcu: struct used for freeing in an RCU-safe manner
376 * @bat_iv: B.A.T.M.A.N. IV private structure
378 struct batadv_neigh_node
{
379 struct hlist_node list
;
380 struct batadv_orig_node
*orig_node
;
382 struct hlist_head ifinfo_list
;
383 spinlock_t ifinfo_lock
; /* protects ifinfo_list and its members */
384 struct batadv_hard_iface
*if_incoming
;
385 unsigned long last_seen
;
391 * struct batadv_neigh_ifinfo_bat_iv - neighbor information per outgoing
392 * interface for BATMAN IV
393 * @tq_recv: ring buffer of received TQ values from this neigh node
394 * @tq_index: ring buffer index
395 * @tq_avg: averaged tq of all tq values in the ring buffer (tq_recv)
396 * @real_bits: bitfield containing the number of OGMs received from this neigh
397 * node (relative to orig_node->last_real_seqno)
398 * @real_packet_count: counted result of real_bits
400 struct batadv_neigh_ifinfo_bat_iv
{
401 u8 tq_recv
[BATADV_TQ_GLOBAL_WINDOW_SIZE
];
404 DECLARE_BITMAP(real_bits
, BATADV_TQ_LOCAL_WINDOW_SIZE
);
405 u8 real_packet_count
;
409 * struct batadv_neigh_ifinfo - neighbor information per outgoing interface
410 * @list: list node for batadv_neigh_node::ifinfo_list
411 * @if_outgoing: pointer to outgoing hard interface
412 * @bat_iv: B.A.T.M.A.N. IV private structure
413 * @last_ttl: last received ttl from this neigh node
414 * @refcount: number of contexts the object is used
415 * @rcu: struct used for freeing in a RCU-safe manner
417 struct batadv_neigh_ifinfo
{
418 struct hlist_node list
;
419 struct batadv_hard_iface
*if_outgoing
;
420 struct batadv_neigh_ifinfo_bat_iv bat_iv
;
427 * struct batadv_bcast_duplist_entry - structure for LAN broadcast suppression
428 * @orig[ETH_ALEN]: mac address of orig node orginating the broadcast
429 * @crc: crc32 checksum of broadcast payload
430 * @entrytime: time when the broadcast packet was received
432 #ifdef CONFIG_BATMAN_ADV_BLA
433 struct batadv_bcast_duplist_entry
{
436 unsigned long entrytime
;
441 * enum batadv_counters - indices for traffic counters
442 * @BATADV_CNT_TX: transmitted payload traffic packet counter
443 * @BATADV_CNT_TX_BYTES: transmitted payload traffic bytes counter
444 * @BATADV_CNT_TX_DROPPED: dropped transmission payload traffic packet counter
445 * @BATADV_CNT_RX: received payload traffic packet counter
446 * @BATADV_CNT_RX_BYTES: received payload traffic bytes counter
447 * @BATADV_CNT_FORWARD: forwarded payload traffic packet counter
448 * @BATADV_CNT_FORWARD_BYTES: forwarded payload traffic bytes counter
449 * @BATADV_CNT_MGMT_TX: transmitted routing protocol traffic packet counter
450 * @BATADV_CNT_MGMT_TX_BYTES: transmitted routing protocol traffic bytes counter
451 * @BATADV_CNT_MGMT_RX: received routing protocol traffic packet counter
452 * @BATADV_CNT_MGMT_RX_BYTES: received routing protocol traffic bytes counter
453 * @BATADV_CNT_FRAG_TX: transmitted fragment traffic packet counter
454 * @BATADV_CNT_FRAG_TX_BYTES: transmitted fragment traffic bytes counter
455 * @BATADV_CNT_FRAG_RX: received fragment traffic packet counter
456 * @BATADV_CNT_FRAG_RX_BYTES: received fragment traffic bytes counter
457 * @BATADV_CNT_FRAG_FWD: forwarded fragment traffic packet counter
458 * @BATADV_CNT_FRAG_FWD_BYTES: forwarded fragment traffic bytes counter
459 * @BATADV_CNT_TT_REQUEST_TX: transmitted tt req traffic packet counter
460 * @BATADV_CNT_TT_REQUEST_RX: received tt req traffic packet counter
461 * @BATADV_CNT_TT_RESPONSE_TX: transmitted tt resp traffic packet counter
462 * @BATADV_CNT_TT_RESPONSE_RX: received tt resp traffic packet counter
463 * @BATADV_CNT_TT_ROAM_ADV_TX: transmitted tt roam traffic packet counter
464 * @BATADV_CNT_TT_ROAM_ADV_RX: received tt roam traffic packet counter
465 * @BATADV_CNT_DAT_GET_TX: transmitted dht GET traffic packet counter
466 * @BATADV_CNT_DAT_GET_RX: received dht GET traffic packet counter
467 * @BATADV_CNT_DAT_PUT_TX: transmitted dht PUT traffic packet counter
468 * @BATADV_CNT_DAT_PUT_RX: received dht PUT traffic packet counter
469 * @BATADV_CNT_DAT_CACHED_REPLY_TX: transmitted dat cache reply traffic packet
471 * @BATADV_CNT_NC_CODE: transmitted nc-combined traffic packet counter
472 * @BATADV_CNT_NC_CODE_BYTES: transmitted nc-combined traffic bytes counter
473 * @BATADV_CNT_NC_RECODE: transmitted nc-recombined traffic packet counter
474 * @BATADV_CNT_NC_RECODE_BYTES: transmitted nc-recombined traffic bytes counter
475 * @BATADV_CNT_NC_BUFFER: counter for packets buffered for later nc decoding
476 * @BATADV_CNT_NC_DECODE: received and nc-decoded traffic packet counter
477 * @BATADV_CNT_NC_DECODE_BYTES: received and nc-decoded traffic bytes counter
478 * @BATADV_CNT_NC_DECODE_FAILED: received and decode-failed traffic packet
480 * @BATADV_CNT_NC_SNIFFED: counter for nc-decoded packets received in promisc
482 * @BATADV_CNT_NUM: number of traffic counters
484 enum batadv_counters
{
487 BATADV_CNT_TX_DROPPED
,
491 BATADV_CNT_FORWARD_BYTES
,
493 BATADV_CNT_MGMT_TX_BYTES
,
495 BATADV_CNT_MGMT_RX_BYTES
,
497 BATADV_CNT_FRAG_TX_BYTES
,
499 BATADV_CNT_FRAG_RX_BYTES
,
501 BATADV_CNT_FRAG_FWD_BYTES
,
502 BATADV_CNT_TT_REQUEST_TX
,
503 BATADV_CNT_TT_REQUEST_RX
,
504 BATADV_CNT_TT_RESPONSE_TX
,
505 BATADV_CNT_TT_RESPONSE_RX
,
506 BATADV_CNT_TT_ROAM_ADV_TX
,
507 BATADV_CNT_TT_ROAM_ADV_RX
,
508 #ifdef CONFIG_BATMAN_ADV_DAT
509 BATADV_CNT_DAT_GET_TX
,
510 BATADV_CNT_DAT_GET_RX
,
511 BATADV_CNT_DAT_PUT_TX
,
512 BATADV_CNT_DAT_PUT_RX
,
513 BATADV_CNT_DAT_CACHED_REPLY_TX
,
515 #ifdef CONFIG_BATMAN_ADV_NC
517 BATADV_CNT_NC_CODE_BYTES
,
518 BATADV_CNT_NC_RECODE
,
519 BATADV_CNT_NC_RECODE_BYTES
,
520 BATADV_CNT_NC_BUFFER
,
521 BATADV_CNT_NC_DECODE
,
522 BATADV_CNT_NC_DECODE_BYTES
,
523 BATADV_CNT_NC_DECODE_FAILED
,
524 BATADV_CNT_NC_SNIFFED
,
530 * struct batadv_priv_tt - per mesh interface translation table data
531 * @vn: translation table version number
532 * @ogm_append_cnt: counter of number of OGMs containing the local tt diff
533 * @local_changes: changes registered in an originator interval
534 * @changes_list: tracks tt local changes within an originator interval
535 * @local_hash: local translation table hash table
536 * @global_hash: global translation table hash table
537 * @req_list: list of pending & unanswered tt_requests
538 * @roam_list: list of the last roaming events of each client limiting the
539 * number of roaming events to avoid route flapping
540 * @changes_list_lock: lock protecting changes_list
541 * @req_list_lock: lock protecting req_list
542 * @roam_list_lock: lock protecting roam_list
543 * @last_changeset: last tt changeset this host has generated
544 * @last_changeset_len: length of last tt changeset this host has generated
545 * @last_changeset_lock: lock protecting last_changeset & last_changeset_len
546 * @commit_lock: prevents from executing a local TT commit while reading the
547 * local table. The local TT commit is made up by two operations (data
548 * structure update and metdata -CRC/TTVN- recalculation) and they have to be
549 * executed atomically in order to avoid another thread to read the
550 * table/metadata between those.
551 * @work: work queue callback item for translation table purging
553 struct batadv_priv_tt
{
555 atomic_t ogm_append_cnt
;
556 atomic_t local_changes
;
557 struct list_head changes_list
;
558 struct batadv_hashtable
*local_hash
;
559 struct batadv_hashtable
*global_hash
;
560 struct hlist_head req_list
;
561 struct list_head roam_list
;
562 spinlock_t changes_list_lock
; /* protects changes */
563 spinlock_t req_list_lock
; /* protects req_list */
564 spinlock_t roam_list_lock
; /* protects roam_list */
565 unsigned char *last_changeset
;
566 s16 last_changeset_len
;
567 /* protects last_changeset & last_changeset_len */
568 spinlock_t last_changeset_lock
;
569 /* prevents from executing a commit while reading the table */
570 spinlock_t commit_lock
;
571 struct delayed_work work
;
575 * struct batadv_priv_bla - per mesh interface bridge loope avoidance data
576 * @num_requests; number of bla requests in flight
577 * @claim_hash: hash table containing mesh nodes this host has claimed
578 * @backbone_hash: hash table containing all detected backbone gateways
579 * @bcast_duplist: recently received broadcast packets array (for broadcast
580 * duplicate suppression)
581 * @bcast_duplist_curr: index of last broadcast packet added to bcast_duplist
582 * @bcast_duplist_lock: lock protecting bcast_duplist & bcast_duplist_curr
583 * @claim_dest: local claim data (e.g. claim group)
584 * @work: work queue callback item for cleanups & bla announcements
586 #ifdef CONFIG_BATMAN_ADV_BLA
587 struct batadv_priv_bla
{
588 atomic_t num_requests
;
589 struct batadv_hashtable
*claim_hash
;
590 struct batadv_hashtable
*backbone_hash
;
591 struct batadv_bcast_duplist_entry bcast_duplist
[BATADV_DUPLIST_SIZE
];
592 int bcast_duplist_curr
;
593 /* protects bcast_duplist & bcast_duplist_curr */
594 spinlock_t bcast_duplist_lock
;
595 struct batadv_bla_claim_dst claim_dest
;
596 struct delayed_work work
;
601 * struct batadv_priv_debug_log - debug logging data
602 * @log_buff: buffer holding the logs (ring bufer)
603 * @log_start: index of next character to read
604 * @log_end: index of next character to write
605 * @lock: lock protecting log_buff, log_start & log_end
606 * @queue_wait: log reader's wait queue
608 #ifdef CONFIG_BATMAN_ADV_DEBUG
609 struct batadv_priv_debug_log
{
610 char log_buff
[BATADV_LOG_BUF_LEN
];
611 unsigned long log_start
;
612 unsigned long log_end
;
613 spinlock_t lock
; /* protects log_buff, log_start and log_end */
614 wait_queue_head_t queue_wait
;
619 * struct batadv_priv_gw - per mesh interface gateway data
620 * @list: list of available gateway nodes
621 * @list_lock: lock protecting gw_list & curr_gw
622 * @curr_gw: pointer to currently selected gateway node
623 * @bandwidth_down: advertised uplink download bandwidth (if gw_mode server)
624 * @bandwidth_up: advertised uplink upload bandwidth (if gw_mode server)
625 * @reselect: bool indicating a gateway re-selection is in progress
627 struct batadv_priv_gw
{
628 struct hlist_head list
;
629 spinlock_t list_lock
; /* protects gw_list & curr_gw */
630 struct batadv_gw_node __rcu
*curr_gw
; /* rcu protected pointer */
631 atomic_t bandwidth_down
;
632 atomic_t bandwidth_up
;
637 * struct batadv_priv_tvlv - per mesh interface tvlv data
638 * @container_list: list of registered tvlv containers to be sent with each OGM
639 * @handler_list: list of the various tvlv content handlers
640 * @container_list_lock: protects tvlv container list access
641 * @handler_list_lock: protects handler list access
643 struct batadv_priv_tvlv
{
644 struct hlist_head container_list
;
645 struct hlist_head handler_list
;
646 spinlock_t container_list_lock
; /* protects container_list */
647 spinlock_t handler_list_lock
; /* protects handler_list */
651 * struct batadv_priv_dat - per mesh interface DAT private data
652 * @addr: node DAT address
653 * @hash: hashtable representing the local ARP cache
654 * @work: work queue callback item for cache purging
656 #ifdef CONFIG_BATMAN_ADV_DAT
657 struct batadv_priv_dat
{
658 batadv_dat_addr_t addr
;
659 struct batadv_hashtable
*hash
;
660 struct delayed_work work
;
664 #ifdef CONFIG_BATMAN_ADV_MCAST
666 * struct batadv_priv_mcast - per mesh interface mcast data
667 * @mla_list: list of multicast addresses we are currently announcing via TT
668 * @want_all_unsnoopables_list: a list of orig_nodes wanting all unsnoopable
670 * @want_all_ipv4_list: a list of orig_nodes wanting all IPv4 multicast traffic
671 * @want_all_ipv6_list: a list of orig_nodes wanting all IPv6 multicast traffic
672 * @flags: the flags we have last sent in our mcast tvlv
673 * @enabled: whether the multicast tvlv is currently enabled
674 * @num_disabled: number of nodes that have no mcast tvlv
675 * @num_want_all_unsnoopables: number of nodes wanting unsnoopable IP traffic
676 * @num_want_all_ipv4: counter for items in want_all_ipv4_list
677 * @num_want_all_ipv6: counter for items in want_all_ipv6_list
678 * @want_lists_lock: lock for protecting modifications to mcast want lists
679 * (traversals are rcu-locked)
681 struct batadv_priv_mcast
{
682 struct hlist_head mla_list
;
683 struct hlist_head want_all_unsnoopables_list
;
684 struct hlist_head want_all_ipv4_list
;
685 struct hlist_head want_all_ipv6_list
;
688 atomic_t num_disabled
;
689 atomic_t num_want_all_unsnoopables
;
690 atomic_t num_want_all_ipv4
;
691 atomic_t num_want_all_ipv6
;
692 /* protects want_all_{unsnoopables,ipv4,ipv6}_list */
693 spinlock_t want_lists_lock
;
698 * struct batadv_priv_nc - per mesh interface network coding private data
699 * @work: work queue callback item for cleanup
700 * @debug_dir: dentry for nc subdir in batman-adv directory in debugfs
701 * @min_tq: only consider neighbors for encoding if neigh_tq > min_tq
702 * @max_fwd_delay: maximum packet forward delay to allow coding of packets
703 * @max_buffer_time: buffer time for sniffed packets used to decoding
704 * @timestamp_fwd_flush: timestamp of last forward packet queue flush
705 * @timestamp_sniffed_purge: timestamp of last sniffed packet queue purge
706 * @coding_hash: Hash table used to buffer skbs while waiting for another
707 * incoming skb to code it with. Skbs are added to the buffer just before being
708 * forwarded in routing.c
709 * @decoding_hash: Hash table used to buffer skbs that might be needed to decode
710 * a received coded skb. The buffer is used for 1) skbs arriving on the
711 * soft-interface; 2) skbs overheard on the hard-interface; and 3) skbs
712 * forwarded by batman-adv.
714 struct batadv_priv_nc
{
715 struct delayed_work work
;
716 struct dentry
*debug_dir
;
720 unsigned long timestamp_fwd_flush
;
721 unsigned long timestamp_sniffed_purge
;
722 struct batadv_hashtable
*coding_hash
;
723 struct batadv_hashtable
*decoding_hash
;
727 * struct batadv_softif_vlan - per VLAN attributes set
728 * @bat_priv: pointer to the mesh object
729 * @vid: VLAN identifier
730 * @kobj: kobject for sysfs vlan subdirectory
731 * @ap_isolation: AP isolation state
732 * @tt: TT private attributes (VLAN specific)
733 * @list: list node for bat_priv::softif_vlan_list
734 * @refcount: number of context where this object is currently in use
735 * @rcu: struct used for freeing in a RCU-safe manner
737 struct batadv_softif_vlan
{
738 struct batadv_priv
*bat_priv
;
740 struct kobject
*kobj
;
741 atomic_t ap_isolation
; /* boolean */
742 struct batadv_vlan_tt tt
;
743 struct hlist_node list
;
749 * struct batadv_priv - per mesh interface data
750 * @mesh_state: current status of the mesh (inactive/active/deactivating)
751 * @soft_iface: net device which holds this struct as private data
752 * @stats: structure holding the data for the ndo_get_stats() call
753 * @bat_counters: mesh internal traffic statistic counters (see batadv_counters)
754 * @aggregated_ogms: bool indicating whether OGM aggregation is enabled
755 * @bonding: bool indicating whether traffic bonding is enabled
756 * @fragmentation: bool indicating whether traffic fragmentation is enabled
757 * @packet_size_max: max packet size that can be transmitted via
758 * multiple fragmented skbs or a single frame if fragmentation is disabled
759 * @frag_seqno: incremental counter to identify chains of egress fragments
760 * @bridge_loop_avoidance: bool indicating whether bridge loop avoidance is
762 * @distributed_arp_table: bool indicating whether distributed ARP table is
764 * @multicast_mode: Enable or disable multicast optimizations on this node's
765 * sender/originating side
766 * @gw_mode: gateway operation: off, client or server (see batadv_gw_modes)
767 * @gw_sel_class: gateway selection class (applies if gw_mode client)
768 * @orig_interval: OGM broadcast interval in milliseconds
769 * @hop_penalty: penalty which will be applied to an OGM's tq-field on every hop
770 * @log_level: configured log level (see batadv_dbg_level)
771 * @bcast_seqno: last sent broadcast packet sequence number
772 * @bcast_queue_left: number of remaining buffered broadcast packet slots
773 * @batman_queue_left: number of remaining OGM packet slots
774 * @num_ifaces: number of interfaces assigned to this mesh interface
775 * @mesh_obj: kobject for sysfs mesh subdirectory
776 * @debug_dir: dentry for debugfs batman-adv subdirectory
777 * @forw_bat_list: list of aggregated OGMs that will be forwarded
778 * @forw_bcast_list: list of broadcast packets that will be rebroadcasted
779 * @orig_hash: hash table containing mesh participants (orig nodes)
780 * @forw_bat_list_lock: lock protecting forw_bat_list
781 * @forw_bcast_list_lock: lock protecting forw_bcast_list
782 * @orig_work: work queue callback item for orig node purging
783 * @cleanup_work: work queue callback item for soft interface deinit
784 * @primary_if: one of the hard interfaces assigned to this mesh interface
785 * becomes the primary interface
786 * @bat_algo_ops: routing algorithm used by this mesh interface
787 * @softif_vlan_list: a list of softif_vlan structs, one per VLAN created on top
788 * of the mesh interface represented by this object
789 * @softif_vlan_list_lock: lock protecting softif_vlan_list
790 * @bla: bridge loope avoidance data
791 * @debug_log: holding debug logging relevant data
793 * @tt: translation table data
794 * @tvlv: type-version-length-value data
795 * @dat: distributed arp table data
796 * @mcast: multicast data
797 * @network_coding: bool indicating whether network coding is enabled
798 * @batadv_priv_nc: network coding data
802 struct net_device
*soft_iface
;
803 struct net_device_stats stats
;
804 u64 __percpu
*bat_counters
; /* Per cpu counters */
805 atomic_t aggregated_ogms
;
807 atomic_t fragmentation
;
808 atomic_t packet_size_max
;
810 #ifdef CONFIG_BATMAN_ADV_BLA
811 atomic_t bridge_loop_avoidance
;
813 #ifdef CONFIG_BATMAN_ADV_DAT
814 atomic_t distributed_arp_table
;
816 #ifdef CONFIG_BATMAN_ADV_MCAST
817 atomic_t multicast_mode
;
820 atomic_t gw_sel_class
;
821 atomic_t orig_interval
;
822 atomic_t hop_penalty
;
823 #ifdef CONFIG_BATMAN_ADV_DEBUG
827 u32 isolation_mark_mask
;
828 atomic_t bcast_seqno
;
829 atomic_t bcast_queue_left
;
830 atomic_t batman_queue_left
;
832 struct kobject
*mesh_obj
;
833 struct dentry
*debug_dir
;
834 struct hlist_head forw_bat_list
;
835 struct hlist_head forw_bcast_list
;
836 struct batadv_hashtable
*orig_hash
;
837 spinlock_t forw_bat_list_lock
; /* protects forw_bat_list */
838 spinlock_t forw_bcast_list_lock
; /* protects forw_bcast_list */
839 struct delayed_work orig_work
;
840 struct work_struct cleanup_work
;
841 struct batadv_hard_iface __rcu
*primary_if
; /* rcu protected pointer */
842 struct batadv_algo_ops
*bat_algo_ops
;
843 struct hlist_head softif_vlan_list
;
844 spinlock_t softif_vlan_list_lock
; /* protects softif_vlan_list */
845 #ifdef CONFIG_BATMAN_ADV_BLA
846 struct batadv_priv_bla bla
;
848 #ifdef CONFIG_BATMAN_ADV_DEBUG
849 struct batadv_priv_debug_log
*debug_log
;
851 struct batadv_priv_gw gw
;
852 struct batadv_priv_tt tt
;
853 struct batadv_priv_tvlv tvlv
;
854 #ifdef CONFIG_BATMAN_ADV_DAT
855 struct batadv_priv_dat dat
;
857 #ifdef CONFIG_BATMAN_ADV_MCAST
858 struct batadv_priv_mcast mcast
;
860 #ifdef CONFIG_BATMAN_ADV_NC
861 atomic_t network_coding
;
862 struct batadv_priv_nc nc
;
863 #endif /* CONFIG_BATMAN_ADV_NC */
867 * struct batadv_socket_client - layer2 icmp socket client data
868 * @queue_list: packet queue for packets destined for this socket client
869 * @queue_len: number of packets in the packet queue (queue_list)
870 * @index: socket client's index in the batadv_socket_client_hash
871 * @lock: lock protecting queue_list, queue_len & index
872 * @queue_wait: socket client's wait queue
873 * @bat_priv: pointer to soft_iface this client belongs to
875 struct batadv_socket_client
{
876 struct list_head queue_list
;
877 unsigned int queue_len
;
879 spinlock_t lock
; /* protects queue_list, queue_len & index */
880 wait_queue_head_t queue_wait
;
881 struct batadv_priv
*bat_priv
;
885 * struct batadv_socket_packet - layer2 icmp packet for socket client
886 * @list: list node for batadv_socket_client::queue_list
887 * @icmp_len: size of the layer2 icmp packet
888 * @icmp_packet: layer2 icmp packet
890 struct batadv_socket_packet
{
891 struct list_head list
;
893 u8 icmp_packet
[BATADV_ICMP_MAX_PACKET_SIZE
];
897 * struct batadv_bla_backbone_gw - batman-adv gateway bridged into the LAN
898 * @orig: originator address of backbone node (mac address of primary iface)
899 * @vid: vlan id this gateway was detected on
900 * @hash_entry: hlist node for batadv_priv_bla::backbone_hash
901 * @bat_priv: pointer to soft_iface this backbone gateway belongs to
902 * @lasttime: last time we heard of this backbone gw
903 * @wait_periods: grace time for bridge forward delays and bla group forming at
904 * bootup phase - no bcast traffic is formwared until it has elapsed
905 * @request_sent: if this bool is set to true we are out of sync with this
906 * backbone gateway - no bcast traffic is formwared until the situation was
908 * @crc: crc16 checksum over all claims
909 * @refcount: number of contexts the object is used
910 * @rcu: struct used for freeing in an RCU-safe manner
912 #ifdef CONFIG_BATMAN_ADV_BLA
913 struct batadv_bla_backbone_gw
{
916 struct hlist_node hash_entry
;
917 struct batadv_priv
*bat_priv
;
918 unsigned long lasttime
;
919 atomic_t wait_periods
;
920 atomic_t request_sent
;
927 * struct batadv_bla_claim - claimed non-mesh client structure
928 * @addr: mac address of claimed non-mesh client
929 * @vid: vlan id this client was detected on
930 * @batadv_bla_backbone_gw: pointer to backbone gw claiming this client
931 * @lasttime: last time we heard of claim (locals only)
932 * @hash_entry: hlist node for batadv_priv_bla::claim_hash
933 * @refcount: number of contexts the object is used
934 * @rcu: struct used for freeing in an RCU-safe manner
936 struct batadv_bla_claim
{
939 struct batadv_bla_backbone_gw
*backbone_gw
;
940 unsigned long lasttime
;
941 struct hlist_node hash_entry
;
948 * struct batadv_tt_common_entry - tt local & tt global common data
949 * @addr: mac address of non-mesh client
950 * @vid: VLAN identifier
951 * @hash_entry: hlist node for batadv_priv_tt::local_hash or for
952 * batadv_priv_tt::global_hash
953 * @flags: various state handling flags (see batadv_tt_client_flags)
954 * @added_at: timestamp used for purging stale tt common entries
955 * @refcount: number of contexts the object is used
956 * @rcu: struct used for freeing in an RCU-safe manner
958 struct batadv_tt_common_entry
{
961 struct hlist_node hash_entry
;
963 unsigned long added_at
;
969 * struct batadv_tt_local_entry - translation table local entry data
970 * @common: general translation table data
971 * @last_seen: timestamp used for purging stale tt local entries
973 struct batadv_tt_local_entry
{
974 struct batadv_tt_common_entry common
;
975 unsigned long last_seen
;
979 * struct batadv_tt_global_entry - translation table global entry data
980 * @common: general translation table data
981 * @orig_list: list of orig nodes announcing this non-mesh client
982 * @orig_list_count: number of items in the orig_list
983 * @list_lock: lock protecting orig_list
984 * @roam_at: time at which TT_GLOBAL_ROAM was set
986 struct batadv_tt_global_entry
{
987 struct batadv_tt_common_entry common
;
988 struct hlist_head orig_list
;
989 atomic_t orig_list_count
;
990 spinlock_t list_lock
; /* protects orig_list */
991 unsigned long roam_at
;
995 * struct batadv_tt_orig_list_entry - orig node announcing a non-mesh client
996 * @orig_node: pointer to orig node announcing this non-mesh client
997 * @ttvn: translation table version number which added the non-mesh client
998 * @list: list node for batadv_tt_global_entry::orig_list
999 * @refcount: number of contexts the object is used
1000 * @rcu: struct used for freeing in an RCU-safe manner
1002 struct batadv_tt_orig_list_entry
{
1003 struct batadv_orig_node
*orig_node
;
1005 struct hlist_node list
;
1007 struct rcu_head rcu
;
1011 * struct batadv_tt_change_node - structure for tt changes occurred
1012 * @list: list node for batadv_priv_tt::changes_list
1013 * @change: holds the actual translation table diff data
1015 struct batadv_tt_change_node
{
1016 struct list_head list
;
1017 struct batadv_tvlv_tt_change change
;
1021 * struct batadv_tt_req_node - data to keep track of the tt requests in flight
1022 * @addr: mac address address of the originator this request was sent to
1023 * @issued_at: timestamp used for purging stale tt requests
1024 * @list: list node for batadv_priv_tt::req_list
1026 struct batadv_tt_req_node
{
1028 unsigned long issued_at
;
1029 struct hlist_node list
;
1033 * struct batadv_tt_roam_node - roaming client data
1034 * @addr: mac address of the client in the roaming phase
1035 * @counter: number of allowed roaming events per client within a single
1036 * OGM interval (changes are committed with each OGM)
1037 * @first_time: timestamp used for purging stale roaming node entries
1038 * @list: list node for batadv_priv_tt::roam_list
1040 struct batadv_tt_roam_node
{
1043 unsigned long first_time
;
1044 struct list_head list
;
1048 * struct batadv_nc_node - network coding node
1049 * @list: next and prev pointer for the list handling
1050 * @addr: the node's mac address
1051 * @refcount: number of contexts the object is used by
1052 * @rcu: struct used for freeing in an RCU-safe manner
1053 * @orig_node: pointer to corresponding orig node struct
1054 * @last_seen: timestamp of last ogm received from this node
1056 struct batadv_nc_node
{
1057 struct list_head list
;
1060 struct rcu_head rcu
;
1061 struct batadv_orig_node
*orig_node
;
1062 unsigned long last_seen
;
1066 * struct batadv_nc_path - network coding path
1067 * @hash_entry: next and prev pointer for the list handling
1068 * @rcu: struct used for freeing in an RCU-safe manner
1069 * @refcount: number of contexts the object is used by
1070 * @packet_list: list of buffered packets for this path
1071 * @packet_list_lock: access lock for packet list
1072 * @next_hop: next hop (destination) of path
1073 * @prev_hop: previous hop (source) of path
1074 * @last_valid: timestamp for last validation of path
1076 struct batadv_nc_path
{
1077 struct hlist_node hash_entry
;
1078 struct rcu_head rcu
;
1080 struct list_head packet_list
;
1081 spinlock_t packet_list_lock
; /* Protects packet_list */
1082 u8 next_hop
[ETH_ALEN
];
1083 u8 prev_hop
[ETH_ALEN
];
1084 unsigned long last_valid
;
1088 * struct batadv_nc_packet - network coding packet used when coding and
1090 * @list: next and prev pointer for the list handling
1091 * @packet_id: crc32 checksum of skb data
1092 * @timestamp: field containing the info when the packet was added to path
1093 * @neigh_node: pointer to original next hop neighbor of skb
1094 * @skb: skb which can be encoded or used for decoding
1095 * @nc_path: pointer to path this nc packet is attached to
1097 struct batadv_nc_packet
{
1098 struct list_head list
;
1100 unsigned long timestamp
;
1101 struct batadv_neigh_node
*neigh_node
;
1102 struct sk_buff
*skb
;
1103 struct batadv_nc_path
*nc_path
;
1107 * struct batadv_skb_cb - control buffer structure used to store private data
1108 * relevant to batman-adv in the skb->cb buffer in skbs.
1109 * @decoded: Marks a skb as decoded, which is checked when searching for coding
1110 * opportunities in network-coding.c
1112 struct batadv_skb_cb
{
1117 * struct batadv_forw_packet - structure for bcast packets to be sent/forwarded
1118 * @list: list node for batadv_socket_client::queue_list
1119 * @send_time: execution time for delayed_work (packet sending)
1120 * @own: bool for locally generated packets (local OGMs are re-scheduled after
1122 * @skb: bcast packet's skb buffer
1123 * @packet_len: size of aggregated OGM packet inside the skb buffer
1124 * @direct_link_flags: direct link flags for aggregated OGM packets
1125 * @num_packets: counter for bcast packet retransmission
1126 * @delayed_work: work queue callback item for packet sending
1127 * @if_incoming: pointer to incoming hard-iface or primary iface if
1128 * locally generated packet
1129 * @if_outgoing: packet where the packet should be sent to, or NULL if
1132 struct batadv_forw_packet
{
1133 struct hlist_node list
;
1134 unsigned long send_time
;
1136 struct sk_buff
*skb
;
1138 u32 direct_link_flags
;
1140 struct delayed_work delayed_work
;
1141 struct batadv_hard_iface
*if_incoming
;
1142 struct batadv_hard_iface
*if_outgoing
;
1146 * struct batadv_algo_ops - mesh algorithm callbacks
1147 * @list: list node for the batadv_algo_list
1148 * @name: name of the algorithm
1149 * @bat_iface_enable: init routing info when hard-interface is enabled
1150 * @bat_iface_disable: de-init routing info when hard-interface is disabled
1151 * @bat_iface_update_mac: (re-)init mac addresses of the protocol information
1152 * belonging to this hard-interface
1153 * @bat_primary_iface_set: called when primary interface is selected / changed
1154 * @bat_ogm_schedule: prepare a new outgoing OGM for the send queue
1155 * @bat_ogm_emit: send scheduled OGM
1156 * @bat_hardif_neigh_init: called on creation of single hop entry
1157 * @bat_neigh_cmp: compare the metrics of two neighbors for their respective
1158 * outgoing interfaces
1159 * @bat_neigh_is_equiv_or_better: check if neigh1 is equally good or better
1160 * than neigh2 for their respective outgoing interface from the metric
1162 * @bat_neigh_print: print the single hop neighbor list (optional)
1163 * @bat_neigh_free: free the resources allocated by the routing algorithm for a
1165 * @bat_orig_print: print the originator table (optional)
1166 * @bat_orig_free: free the resources allocated by the routing algorithm for an
1168 * @bat_orig_add_if: ask the routing algorithm to apply the needed changes to
1169 * the orig_node due to a new hard-interface being added into the mesh
1170 * @bat_orig_del_if: ask the routing algorithm to apply the needed changes to
1171 * the orig_node due to an hard-interface being removed from the mesh
1173 struct batadv_algo_ops
{
1174 struct hlist_node list
;
1176 int (*bat_iface_enable
)(struct batadv_hard_iface
*hard_iface
);
1177 void (*bat_iface_disable
)(struct batadv_hard_iface
*hard_iface
);
1178 void (*bat_iface_update_mac
)(struct batadv_hard_iface
*hard_iface
);
1179 void (*bat_primary_iface_set
)(struct batadv_hard_iface
*hard_iface
);
1180 void (*bat_ogm_schedule
)(struct batadv_hard_iface
*hard_iface
);
1181 void (*bat_ogm_emit
)(struct batadv_forw_packet
*forw_packet
);
1182 /* neigh_node handling API */
1183 void (*bat_hardif_neigh_init
)(struct batadv_hardif_neigh_node
*neigh
);
1184 int (*bat_neigh_cmp
)(struct batadv_neigh_node
*neigh1
,
1185 struct batadv_hard_iface
*if_outgoing1
,
1186 struct batadv_neigh_node
*neigh2
,
1187 struct batadv_hard_iface
*if_outgoing2
);
1188 bool (*bat_neigh_is_equiv_or_better
)
1189 (struct batadv_neigh_node
*neigh1
,
1190 struct batadv_hard_iface
*if_outgoing1
,
1191 struct batadv_neigh_node
*neigh2
,
1192 struct batadv_hard_iface
*if_outgoing2
);
1193 void (*bat_neigh_print
)(struct batadv_priv
*priv
, struct seq_file
*seq
);
1194 void (*bat_neigh_free
)(struct batadv_neigh_node
*neigh
);
1195 /* orig_node handling API */
1196 void (*bat_orig_print
)(struct batadv_priv
*priv
, struct seq_file
*seq
,
1197 struct batadv_hard_iface
*hard_iface
);
1198 void (*bat_orig_free
)(struct batadv_orig_node
*orig_node
);
1199 int (*bat_orig_add_if
)(struct batadv_orig_node
*orig_node
,
1201 int (*bat_orig_del_if
)(struct batadv_orig_node
*orig_node
,
1202 int max_if_num
, int del_if_num
);
1206 * struct batadv_dat_entry - it is a single entry of batman-adv ARP backend. It
1207 * is used to stored ARP entries needed for the global DAT cache
1208 * @ip: the IPv4 corresponding to this DAT/ARP entry
1209 * @mac_addr: the MAC address associated to the stored IPv4
1210 * @vid: the vlan ID associated to this entry
1211 * @last_update: time in jiffies when this entry was refreshed last time
1212 * @hash_entry: hlist node for batadv_priv_dat::hash
1213 * @refcount: number of contexts the object is used
1214 * @rcu: struct used for freeing in an RCU-safe manner
1216 struct batadv_dat_entry
{
1218 u8 mac_addr
[ETH_ALEN
];
1220 unsigned long last_update
;
1221 struct hlist_node hash_entry
;
1223 struct rcu_head rcu
;
1227 * struct batadv_hw_addr - a list entry for a MAC address
1228 * @list: list node for the linking of entries
1229 * @addr: the MAC address of this list entry
1231 struct batadv_hw_addr
{
1232 struct hlist_node list
;
1233 unsigned char addr
[ETH_ALEN
];
1237 * struct batadv_dat_candidate - candidate destination for DAT operations
1238 * @type: the type of the selected candidate. It can one of the following:
1239 * - BATADV_DAT_CANDIDATE_NOT_FOUND
1240 * - BATADV_DAT_CANDIDATE_ORIG
1241 * @orig_node: if type is BATADV_DAT_CANDIDATE_ORIG this field points to the
1242 * corresponding originator node structure
1244 struct batadv_dat_candidate
{
1246 struct batadv_orig_node
*orig_node
;
1250 * struct batadv_tvlv_container - container for tvlv appended to OGMs
1251 * @list: hlist node for batadv_priv_tvlv::container_list
1252 * @tvlv_hdr: tvlv header information needed to construct the tvlv
1253 * @value_len: length of the buffer following this struct which contains
1254 * the actual tvlv payload
1255 * @refcount: number of contexts the object is used
1257 struct batadv_tvlv_container
{
1258 struct hlist_node list
;
1259 struct batadv_tvlv_hdr tvlv_hdr
;
1264 * struct batadv_tvlv_handler - handler for specific tvlv type and version
1265 * @list: hlist node for batadv_priv_tvlv::handler_list
1266 * @ogm_handler: handler callback which is given the tvlv payload to process on
1267 * incoming OGM packets
1268 * @unicast_handler: handler callback which is given the tvlv payload to process
1269 * on incoming unicast tvlv packets
1270 * @type: tvlv type this handler feels responsible for
1271 * @version: tvlv version this handler feels responsible for
1272 * @flags: tvlv handler flags
1273 * @refcount: number of contexts the object is used
1274 * @rcu: struct used for freeing in an RCU-safe manner
1276 struct batadv_tvlv_handler
{
1277 struct hlist_node list
;
1278 void (*ogm_handler
)(struct batadv_priv
*bat_priv
,
1279 struct batadv_orig_node
*orig
,
1280 u8 flags
, void *tvlv_value
, u16 tvlv_value_len
);
1281 int (*unicast_handler
)(struct batadv_priv
*bat_priv
,
1283 void *tvlv_value
, u16 tvlv_value_len
);
1288 struct rcu_head rcu
;
1292 * enum batadv_tvlv_handler_flags - tvlv handler flags definitions
1293 * @BATADV_TVLV_HANDLER_OGM_CIFNOTFND: tvlv ogm processing function will call
1294 * this handler even if its type was not found (with no data)
1295 * @BATADV_TVLV_HANDLER_OGM_CALLED: interval tvlv handling flag - the API marks
1296 * a handler as being called, so it won't be called if the
1297 * BATADV_TVLV_HANDLER_OGM_CIFNOTFND flag was set
1299 enum batadv_tvlv_handler_flags
{
1300 BATADV_TVLV_HANDLER_OGM_CIFNOTFND
= BIT(1),
1301 BATADV_TVLV_HANDLER_OGM_CALLED
= BIT(2),
1304 #endif /* _NET_BATMAN_ADV_TYPES_H_ */