1 /* Copyright (C) 2007-2017 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/average.h>
26 #include <linux/bitops.h>
27 #include <linux/compiler.h>
28 #include <linux/if_ether.h>
29 #include <linux/kref.h>
30 #include <linux/mutex.h>
31 #include <linux/netdevice.h>
32 #include <linux/netlink.h>
33 #include <linux/sched.h> /* for linux/wait.h */
34 #include <linux/spinlock.h>
35 #include <linux/types.h>
36 #include <linux/wait.h>
37 #include <linux/workqueue.h>
38 #include <uapi/linux/batman_adv.h>
44 #ifdef CONFIG_BATMAN_ADV_DAT
47 * batadv_dat_addr_t - it is the type used for all DHT addresses. If it is
48 * changed, BATADV_DAT_ADDR_MAX is changed as well.
50 * *Please be careful: batadv_dat_addr_t must be UNSIGNED*
52 #define batadv_dat_addr_t u16
54 #endif /* CONFIG_BATMAN_ADV_DAT */
57 * enum batadv_dhcp_recipient - dhcp destination
58 * @BATADV_DHCP_NO: packet is not a dhcp message
59 * @BATADV_DHCP_TO_SERVER: dhcp message is directed to a server
60 * @BATADV_DHCP_TO_CLIENT: dhcp message is directed to a client
62 enum batadv_dhcp_recipient {
64 BATADV_DHCP_TO_SERVER,
65 BATADV_DHCP_TO_CLIENT,
69 * BATADV_TT_REMOTE_MASK - bitmask selecting the flags that are sent over the
72 #define BATADV_TT_REMOTE_MASK 0x00FF
75 * BATADV_TT_SYNC_MASK - bitmask of the flags that need to be kept in sync
76 * among the nodes. These flags are used to compute the global/local CRC
78 #define BATADV_TT_SYNC_MASK 0x00F0
81 * struct batadv_hard_iface_bat_iv - per hard-interface B.A.T.M.A.N. IV data
82 * @ogm_buff: buffer holding the OGM packet
83 * @ogm_buff_len: length of the OGM packet buffer
84 * @ogm_seqno: OGM sequence number - used to identify each OGM
85 * @ogm_buff_mutex: lock protecting ogm_buff and ogm_buff_len
87 struct batadv_hard_iface_bat_iv {
88 unsigned char *ogm_buff;
91 struct mutex ogm_buff_mutex;
95 * enum batadv_v_hard_iface_flags - interface flags useful to B.A.T.M.A.N. V
96 * @BATADV_FULL_DUPLEX: tells if the connection over this link is full-duplex
97 * @BATADV_WARNING_DEFAULT: tells whether we have warned the user that no
98 * throughput data is available for this interface and that default values are
101 enum batadv_v_hard_iface_flags {
102 BATADV_FULL_DUPLEX = BIT(0),
103 BATADV_WARNING_DEFAULT = BIT(1),
107 * struct batadv_hard_iface_bat_v - per hard-interface B.A.T.M.A.N. V data
108 * @elp_interval: time interval between two ELP transmissions
109 * @elp_seqno: current ELP sequence number
110 * @elp_skb: base skb containing the ELP message to send
111 * @elp_wq: workqueue used to schedule ELP transmissions
112 * @throughput_override: throughput override to disable link auto-detection
113 * @flags: interface specific flags
115 struct batadv_hard_iface_bat_v {
116 atomic_t elp_interval;
118 struct sk_buff *elp_skb;
119 struct delayed_work elp_wq;
120 atomic_t throughput_override;
125 * enum batadv_hard_iface_wifi_flags - Flags describing the wifi configuration
126 * of a batadv_hard_iface
127 * @BATADV_HARDIF_WIFI_WEXT_DIRECT: it is a wext wifi device
128 * @BATADV_HARDIF_WIFI_CFG80211_DIRECT: it is a cfg80211 wifi device
129 * @BATADV_HARDIF_WIFI_WEXT_INDIRECT: link device is a wext wifi device
130 * @BATADV_HARDIF_WIFI_CFG80211_INDIRECT: link device is a cfg80211 wifi device
132 enum batadv_hard_iface_wifi_flags {
133 BATADV_HARDIF_WIFI_WEXT_DIRECT = BIT(0),
134 BATADV_HARDIF_WIFI_CFG80211_DIRECT = BIT(1),
135 BATADV_HARDIF_WIFI_WEXT_INDIRECT = BIT(2),
136 BATADV_HARDIF_WIFI_CFG80211_INDIRECT = BIT(3),
140 * struct batadv_hard_iface - network device known to batman-adv
141 * @list: list node for batadv_hardif_list
142 * @if_num: identificator of the interface
143 * @if_status: status of the interface for batman-adv
144 * @num_bcasts: number of payload re-broadcasts on this interface (ARQ)
145 * @wifi_flags: flags whether this is (directly or indirectly) a wifi interface
146 * @net_dev: pointer to the net_device
147 * @hardif_obj: kobject of the per interface sysfs "mesh" directory
148 * @refcount: number of contexts the object is used
149 * @batman_adv_ptype: packet type describing packets that should be processed by
150 * batman-adv for this interface
151 * @soft_iface: the batman-adv interface which uses this network interface
152 * @rcu: struct used for freeing in an RCU-safe manner
153 * @bat_iv: per hard-interface B.A.T.M.A.N. IV data
154 * @bat_v: per hard-interface B.A.T.M.A.N. V data
155 * @debug_dir: dentry for nc subdir in batman-adv directory in debugfs
156 * @neigh_list: list of unique single hop neighbors via this interface
157 * @neigh_list_lock: lock protecting neigh_list
159 struct batadv_hard_iface {
160 struct list_head list;
165 struct net_device *net_dev;
166 struct kobject *hardif_obj;
167 struct kref refcount;
168 struct packet_type batman_adv_ptype;
169 struct net_device *soft_iface;
171 struct batadv_hard_iface_bat_iv bat_iv;
172 #ifdef CONFIG_BATMAN_ADV_BATMAN_V
173 struct batadv_hard_iface_bat_v bat_v;
175 struct dentry *debug_dir;
176 struct hlist_head neigh_list;
177 /* neigh_list_lock protects: neigh_list */
178 spinlock_t neigh_list_lock;
182 * struct batadv_orig_ifinfo - originator info per outgoing interface
183 * @list: list node for orig_node::ifinfo_list
184 * @if_outgoing: pointer to outgoing hard-interface
185 * @router: router that should be used to reach this originator
186 * @last_real_seqno: last and best known sequence number
187 * @last_ttl: ttl of last received packet
188 * @last_seqno_forwarded: seqno of the OGM which was forwarded last
189 * @batman_seqno_reset: time when the batman seqno window was reset
190 * @refcount: number of contexts the object is used
191 * @rcu: struct used for freeing in an RCU-safe manner
193 struct batadv_orig_ifinfo {
194 struct hlist_node list;
195 struct batadv_hard_iface *if_outgoing;
196 struct batadv_neigh_node __rcu *router; /* rcu protected pointer */
199 u32 last_seqno_forwarded;
200 unsigned long batman_seqno_reset;
201 struct kref refcount;
206 * struct batadv_frag_table_entry - head in the fragment buffer table
207 * @fragment_list: head of list with fragments
208 * @lock: lock to protect the list of fragments
209 * @timestamp: time (jiffie) of last received fragment
210 * @seqno: sequence number of the fragments in the list
211 * @size: accumulated size of packets in list
212 * @total_size: expected size of the assembled packet
214 struct batadv_frag_table_entry {
215 struct hlist_head fragment_list;
216 spinlock_t lock; /* protects fragment_list */
217 unsigned long timestamp;
224 * struct batadv_frag_list_entry - entry in a list of fragments
225 * @list: list node information
227 * @no: fragment number in the set
229 struct batadv_frag_list_entry {
230 struct hlist_node list;
236 * struct batadv_vlan_tt - VLAN specific TT attributes
237 * @crc: CRC32 checksum of the entries belonging to this vlan
238 * @num_entries: number of TT entries for this VLAN
240 struct batadv_vlan_tt {
242 atomic_t num_entries;
246 * struct batadv_orig_node_vlan - VLAN specific data per orig_node
247 * @vid: the VLAN identifier
248 * @tt: VLAN specific TT attributes
249 * @list: list node for orig_node::vlan_list
250 * @refcount: number of context where this object is currently in use
251 * @rcu: struct used for freeing in a RCU-safe manner
253 struct batadv_orig_node_vlan {
255 struct batadv_vlan_tt tt;
256 struct hlist_node list;
257 struct kref refcount;
262 * struct batadv_orig_bat_iv - B.A.T.M.A.N. IV private orig_node members
263 * @bcast_own: set of bitfields (one per hard-interface) where each one counts
264 * the number of our OGMs this orig_node rebroadcasted "back" to us (relative
265 * to last_real_seqno). Every bitfield is BATADV_TQ_LOCAL_WINDOW_SIZE bits long.
266 * @bcast_own_sum: sum of bcast_own
267 * @ogm_cnt_lock: lock protecting bcast_own, bcast_own_sum,
268 * neigh_node->bat_iv.real_bits & neigh_node->bat_iv.real_packet_count
270 struct batadv_orig_bat_iv {
271 unsigned long *bcast_own;
273 /* ogm_cnt_lock protects: bcast_own, bcast_own_sum,
274 * neigh_node->bat_iv.real_bits & neigh_node->bat_iv.real_packet_count
276 spinlock_t ogm_cnt_lock;
280 * struct batadv_orig_node - structure for orig_list maintaining nodes of mesh
281 * @orig: originator ethernet address
282 * @ifinfo_list: list for routers per outgoing interface
283 * @last_bonding_candidate: pointer to last ifinfo of last used router
284 * @dat_addr: address of the orig node in the distributed hash
285 * @last_seen: time when last packet from this node was received
286 * @bcast_seqno_reset: time when the broadcast seqno window was reset
287 * @mcast_handler_lock: synchronizes mcast-capability and -flag changes
288 * @mcast_flags: multicast flags announced by the orig node
289 * @mcast_want_all_unsnoopables_node: a list node for the
290 * mcast.want_all_unsnoopables list
291 * @mcast_want_all_ipv4_node: a list node for the mcast.want_all_ipv4 list
292 * @mcast_want_all_ipv6_node: a list node for the mcast.want_all_ipv6 list
293 * @capabilities: announced capabilities of this originator
294 * @capa_initialized: bitfield to remember whether a capability was initialized
295 * @last_ttvn: last seen translation table version number
296 * @tt_buff: last tt changeset this node received from the orig node
297 * @tt_buff_len: length of the last tt changeset this node received from the
299 * @tt_buff_lock: lock that protects tt_buff and tt_buff_len
300 * @tt_lock: prevents from updating the table while reading it. Table update is
301 * made up by two operations (data structure update and metdata -CRC/TTVN-
302 * recalculation) and they have to be executed atomically in order to avoid
303 * another thread to read the table/metadata between those.
304 * @bcast_bits: bitfield containing the info which payload broadcast originated
305 * from this orig node this host already has seen (relative to
307 * @last_bcast_seqno: last broadcast sequence number received by this host
308 * @neigh_list: list of potential next hop neighbor towards this orig node
309 * @neigh_list_lock: lock protecting neigh_list and router
310 * @hash_entry: hlist node for batadv_priv::orig_hash
311 * @bat_priv: pointer to soft_iface this orig node belongs to
312 * @bcast_seqno_lock: lock protecting bcast_bits & last_bcast_seqno
313 * @refcount: number of contexts the object is used
314 * @rcu: struct used for freeing in an RCU-safe manner
315 * @in_coding_list: list of nodes this orig can hear
316 * @out_coding_list: list of nodes that can hear this orig
317 * @in_coding_list_lock: protects in_coding_list
318 * @out_coding_list_lock: protects out_coding_list
319 * @fragments: array with heads for fragment chains
320 * @vlan_list: a list of orig_node_vlan structs, one per VLAN served by the
321 * originator represented by this object
322 * @vlan_list_lock: lock protecting vlan_list
323 * @bat_iv: B.A.T.M.A.N. IV private structure
325 struct batadv_orig_node {
327 struct hlist_head ifinfo_list;
328 struct batadv_orig_ifinfo *last_bonding_candidate;
329 #ifdef CONFIG_BATMAN_ADV_DAT
330 batadv_dat_addr_t dat_addr;
332 unsigned long last_seen;
333 unsigned long bcast_seqno_reset;
334 #ifdef CONFIG_BATMAN_ADV_MCAST
335 /* synchronizes mcast tvlv specific orig changes */
336 spinlock_t mcast_handler_lock;
338 struct hlist_node mcast_want_all_unsnoopables_node;
339 struct hlist_node mcast_want_all_ipv4_node;
340 struct hlist_node mcast_want_all_ipv6_node;
342 unsigned long capabilities;
343 unsigned long capa_initialized;
345 unsigned char *tt_buff;
347 spinlock_t tt_buff_lock; /* protects tt_buff & tt_buff_len */
348 /* prevents from changing the table while reading it */
350 DECLARE_BITMAP(bcast_bits, BATADV_TQ_LOCAL_WINDOW_SIZE);
351 u32 last_bcast_seqno;
352 struct hlist_head neigh_list;
353 /* neigh_list_lock protects: neigh_list, ifinfo_list,
354 * last_bonding_candidate and router
356 spinlock_t neigh_list_lock;
357 struct hlist_node hash_entry;
358 struct batadv_priv *bat_priv;
359 /* bcast_seqno_lock protects: bcast_bits & last_bcast_seqno */
360 spinlock_t bcast_seqno_lock;
361 struct kref refcount;
363 #ifdef CONFIG_BATMAN_ADV_NC
364 struct list_head in_coding_list;
365 struct list_head out_coding_list;
366 spinlock_t in_coding_list_lock; /* Protects in_coding_list */
367 spinlock_t out_coding_list_lock; /* Protects out_coding_list */
369 struct batadv_frag_table_entry fragments[BATADV_FRAG_BUFFER_COUNT];
370 struct hlist_head vlan_list;
371 spinlock_t vlan_list_lock; /* protects vlan_list */
372 struct batadv_orig_bat_iv bat_iv;
376 * enum batadv_orig_capabilities - orig node capabilities
377 * @BATADV_ORIG_CAPA_HAS_DAT: orig node has distributed arp table enabled
378 * @BATADV_ORIG_CAPA_HAS_NC: orig node has network coding enabled
379 * @BATADV_ORIG_CAPA_HAS_TT: orig node has tt capability
380 * @BATADV_ORIG_CAPA_HAS_MCAST: orig node has some multicast capability
381 * (= orig node announces a tvlv of type BATADV_TVLV_MCAST)
383 enum batadv_orig_capabilities {
384 BATADV_ORIG_CAPA_HAS_DAT,
385 BATADV_ORIG_CAPA_HAS_NC,
386 BATADV_ORIG_CAPA_HAS_TT,
387 BATADV_ORIG_CAPA_HAS_MCAST,
391 * struct batadv_gw_node - structure for orig nodes announcing gw capabilities
392 * @list: list node for batadv_priv_gw::list
393 * @orig_node: pointer to corresponding orig node
394 * @bandwidth_down: advertised uplink download bandwidth
395 * @bandwidth_up: advertised uplink upload bandwidth
396 * @refcount: number of contexts the object is used
397 * @rcu: struct used for freeing in an RCU-safe manner
399 struct batadv_gw_node {
400 struct hlist_node list;
401 struct batadv_orig_node *orig_node;
404 struct kref refcount;
408 DECLARE_EWMA(throughput, 10, 8)
411 * struct batadv_hardif_neigh_node_bat_v - B.A.T.M.A.N. V private neighbor
413 * @throughput: ewma link throughput towards this neighbor
414 * @elp_interval: time interval between two ELP transmissions
415 * @elp_latest_seqno: latest and best known ELP sequence number
416 * @last_unicast_tx: when the last unicast packet has been sent to this neighbor
417 * @metric_work: work queue callback item for metric update
419 struct batadv_hardif_neigh_node_bat_v {
420 struct ewma_throughput throughput;
422 u32 elp_latest_seqno;
423 unsigned long last_unicast_tx;
424 struct work_struct metric_work;
428 * struct batadv_hardif_neigh_node - unique neighbor per hard-interface
429 * @list: list node for batadv_hard_iface::neigh_list
430 * @addr: the MAC address of the neighboring interface
431 * @orig: the address of the originator this neighbor node belongs to
432 * @if_incoming: pointer to incoming hard-interface
433 * @last_seen: when last packet via this neighbor was received
434 * @bat_v: B.A.T.M.A.N. V private data
435 * @refcount: number of contexts the object is used
436 * @rcu: struct used for freeing in a RCU-safe manner
438 struct batadv_hardif_neigh_node {
439 struct hlist_node list;
442 struct batadv_hard_iface *if_incoming;
443 unsigned long last_seen;
444 #ifdef CONFIG_BATMAN_ADV_BATMAN_V
445 struct batadv_hardif_neigh_node_bat_v bat_v;
447 struct kref refcount;
452 * struct batadv_neigh_node - structure for single hops neighbors
453 * @list: list node for batadv_orig_node::neigh_list
454 * @orig_node: pointer to corresponding orig_node
455 * @addr: the MAC address of the neighboring interface
456 * @ifinfo_list: list for routing metrics per outgoing interface
457 * @ifinfo_lock: lock protecting private ifinfo members and list
458 * @if_incoming: pointer to incoming hard-interface
459 * @last_seen: when last packet via this neighbor was received
460 * @hardif_neigh: hardif_neigh of this neighbor
461 * @refcount: number of contexts the object is used
462 * @rcu: struct used for freeing in an RCU-safe manner
464 struct batadv_neigh_node {
465 struct hlist_node list;
466 struct batadv_orig_node *orig_node;
468 struct hlist_head ifinfo_list;
469 spinlock_t ifinfo_lock; /* protects ifinfo_list and its members */
470 struct batadv_hard_iface *if_incoming;
471 unsigned long last_seen;
472 struct batadv_hardif_neigh_node *hardif_neigh;
473 struct kref refcount;
478 * struct batadv_neigh_ifinfo_bat_iv - neighbor information per outgoing
479 * interface for B.A.T.M.A.N. IV
480 * @tq_recv: ring buffer of received TQ values from this neigh node
481 * @tq_index: ring buffer index
482 * @tq_avg: averaged tq of all tq values in the ring buffer (tq_recv)
483 * @real_bits: bitfield containing the number of OGMs received from this neigh
484 * node (relative to orig_node->last_real_seqno)
485 * @real_packet_count: counted result of real_bits
487 struct batadv_neigh_ifinfo_bat_iv {
488 u8 tq_recv[BATADV_TQ_GLOBAL_WINDOW_SIZE];
491 DECLARE_BITMAP(real_bits, BATADV_TQ_LOCAL_WINDOW_SIZE);
492 u8 real_packet_count;
496 * struct batadv_neigh_ifinfo_bat_v - neighbor information per outgoing
497 * interface for B.A.T.M.A.N. V
498 * @throughput: last throughput metric received from originator via this neigh
499 * @last_seqno: last sequence number known for this neighbor
501 struct batadv_neigh_ifinfo_bat_v {
507 * struct batadv_neigh_ifinfo - neighbor information per outgoing interface
508 * @list: list node for batadv_neigh_node::ifinfo_list
509 * @if_outgoing: pointer to outgoing hard-interface
510 * @bat_iv: B.A.T.M.A.N. IV private structure
511 * @bat_v: B.A.T.M.A.N. V private data
512 * @last_ttl: last received ttl from this neigh node
513 * @refcount: number of contexts the object is used
514 * @rcu: struct used for freeing in a RCU-safe manner
516 struct batadv_neigh_ifinfo {
517 struct hlist_node list;
518 struct batadv_hard_iface *if_outgoing;
519 struct batadv_neigh_ifinfo_bat_iv bat_iv;
520 #ifdef CONFIG_BATMAN_ADV_BATMAN_V
521 struct batadv_neigh_ifinfo_bat_v bat_v;
524 struct kref refcount;
528 #ifdef CONFIG_BATMAN_ADV_BLA
531 * struct batadv_bcast_duplist_entry - structure for LAN broadcast suppression
532 * @orig: mac address of orig node orginating the broadcast
533 * @crc: crc32 checksum of broadcast payload
534 * @entrytime: time when the broadcast packet was received
536 struct batadv_bcast_duplist_entry {
539 unsigned long entrytime;
544 * enum batadv_counters - indices for traffic counters
545 * @BATADV_CNT_TX: transmitted payload traffic packet counter
546 * @BATADV_CNT_TX_BYTES: transmitted payload traffic bytes counter
547 * @BATADV_CNT_TX_DROPPED: dropped transmission payload traffic packet counter
548 * @BATADV_CNT_RX: received payload traffic packet counter
549 * @BATADV_CNT_RX_BYTES: received payload traffic bytes counter
550 * @BATADV_CNT_FORWARD: forwarded payload traffic packet counter
551 * @BATADV_CNT_FORWARD_BYTES: forwarded payload traffic bytes counter
552 * @BATADV_CNT_MGMT_TX: transmitted routing protocol traffic packet counter
553 * @BATADV_CNT_MGMT_TX_BYTES: transmitted routing protocol traffic bytes counter
554 * @BATADV_CNT_MGMT_RX: received routing protocol traffic packet counter
555 * @BATADV_CNT_MGMT_RX_BYTES: received routing protocol traffic bytes counter
556 * @BATADV_CNT_FRAG_TX: transmitted fragment traffic packet counter
557 * @BATADV_CNT_FRAG_TX_BYTES: transmitted fragment traffic bytes counter
558 * @BATADV_CNT_FRAG_RX: received fragment traffic packet counter
559 * @BATADV_CNT_FRAG_RX_BYTES: received fragment traffic bytes counter
560 * @BATADV_CNT_FRAG_FWD: forwarded fragment traffic packet counter
561 * @BATADV_CNT_FRAG_FWD_BYTES: forwarded fragment traffic bytes counter
562 * @BATADV_CNT_TT_REQUEST_TX: transmitted tt req traffic packet counter
563 * @BATADV_CNT_TT_REQUEST_RX: received tt req traffic packet counter
564 * @BATADV_CNT_TT_RESPONSE_TX: transmitted tt resp traffic packet counter
565 * @BATADV_CNT_TT_RESPONSE_RX: received tt resp traffic packet counter
566 * @BATADV_CNT_TT_ROAM_ADV_TX: transmitted tt roam traffic packet counter
567 * @BATADV_CNT_TT_ROAM_ADV_RX: received tt roam traffic packet counter
568 * @BATADV_CNT_DAT_GET_TX: transmitted dht GET traffic packet counter
569 * @BATADV_CNT_DAT_GET_RX: received dht GET traffic packet counter
570 * @BATADV_CNT_DAT_PUT_TX: transmitted dht PUT traffic packet counter
571 * @BATADV_CNT_DAT_PUT_RX: received dht PUT traffic packet counter
572 * @BATADV_CNT_DAT_CACHED_REPLY_TX: transmitted dat cache reply traffic packet
574 * @BATADV_CNT_NC_CODE: transmitted nc-combined traffic packet counter
575 * @BATADV_CNT_NC_CODE_BYTES: transmitted nc-combined traffic bytes counter
576 * @BATADV_CNT_NC_RECODE: transmitted nc-recombined traffic packet counter
577 * @BATADV_CNT_NC_RECODE_BYTES: transmitted nc-recombined traffic bytes counter
578 * @BATADV_CNT_NC_BUFFER: counter for packets buffered for later nc decoding
579 * @BATADV_CNT_NC_DECODE: received and nc-decoded traffic packet counter
580 * @BATADV_CNT_NC_DECODE_BYTES: received and nc-decoded traffic bytes counter
581 * @BATADV_CNT_NC_DECODE_FAILED: received and decode-failed traffic packet
583 * @BATADV_CNT_NC_SNIFFED: counter for nc-decoded packets received in promisc
585 * @BATADV_CNT_NUM: number of traffic counters
587 enum batadv_counters {
590 BATADV_CNT_TX_DROPPED,
594 BATADV_CNT_FORWARD_BYTES,
596 BATADV_CNT_MGMT_TX_BYTES,
598 BATADV_CNT_MGMT_RX_BYTES,
600 BATADV_CNT_FRAG_TX_BYTES,
602 BATADV_CNT_FRAG_RX_BYTES,
604 BATADV_CNT_FRAG_FWD_BYTES,
605 BATADV_CNT_TT_REQUEST_TX,
606 BATADV_CNT_TT_REQUEST_RX,
607 BATADV_CNT_TT_RESPONSE_TX,
608 BATADV_CNT_TT_RESPONSE_RX,
609 BATADV_CNT_TT_ROAM_ADV_TX,
610 BATADV_CNT_TT_ROAM_ADV_RX,
611 #ifdef CONFIG_BATMAN_ADV_DAT
612 BATADV_CNT_DAT_GET_TX,
613 BATADV_CNT_DAT_GET_RX,
614 BATADV_CNT_DAT_PUT_TX,
615 BATADV_CNT_DAT_PUT_RX,
616 BATADV_CNT_DAT_CACHED_REPLY_TX,
618 #ifdef CONFIG_BATMAN_ADV_NC
620 BATADV_CNT_NC_CODE_BYTES,
621 BATADV_CNT_NC_RECODE,
622 BATADV_CNT_NC_RECODE_BYTES,
623 BATADV_CNT_NC_BUFFER,
624 BATADV_CNT_NC_DECODE,
625 BATADV_CNT_NC_DECODE_BYTES,
626 BATADV_CNT_NC_DECODE_FAILED,
627 BATADV_CNT_NC_SNIFFED,
633 * struct batadv_priv_tt - per mesh interface translation table data
634 * @vn: translation table version number
635 * @ogm_append_cnt: counter of number of OGMs containing the local tt diff
636 * @local_changes: changes registered in an originator interval
637 * @changes_list: tracks tt local changes within an originator interval
638 * @local_hash: local translation table hash table
639 * @global_hash: global translation table hash table
640 * @req_list: list of pending & unanswered tt_requests
641 * @roam_list: list of the last roaming events of each client limiting the
642 * number of roaming events to avoid route flapping
643 * @changes_list_lock: lock protecting changes_list
644 * @req_list_lock: lock protecting req_list
645 * @roam_list_lock: lock protecting roam_list
646 * @last_changeset: last tt changeset this host has generated
647 * @last_changeset_len: length of last tt changeset this host has generated
648 * @last_changeset_lock: lock protecting last_changeset & last_changeset_len
649 * @commit_lock: prevents from executing a local TT commit while reading the
650 * local table. The local TT commit is made up by two operations (data
651 * structure update and metdata -CRC/TTVN- recalculation) and they have to be
652 * executed atomically in order to avoid another thread to read the
653 * table/metadata between those.
654 * @work: work queue callback item for translation table purging
656 struct batadv_priv_tt {
658 atomic_t ogm_append_cnt;
659 atomic_t local_changes;
660 struct list_head changes_list;
661 struct batadv_hashtable *local_hash;
662 struct batadv_hashtable *global_hash;
663 struct hlist_head req_list;
664 struct list_head roam_list;
665 spinlock_t changes_list_lock; /* protects changes */
666 spinlock_t req_list_lock; /* protects req_list */
667 spinlock_t roam_list_lock; /* protects roam_list */
668 unsigned char *last_changeset;
669 s16 last_changeset_len;
670 /* protects last_changeset & last_changeset_len */
671 spinlock_t last_changeset_lock;
672 /* prevents from executing a commit while reading the table */
673 spinlock_t commit_lock;
674 struct delayed_work work;
677 #ifdef CONFIG_BATMAN_ADV_BLA
680 * struct batadv_priv_bla - per mesh interface bridge loope avoidance data
681 * @num_requests: number of bla requests in flight
682 * @claim_hash: hash table containing mesh nodes this host has claimed
683 * @backbone_hash: hash table containing all detected backbone gateways
684 * @loopdetect_addr: MAC address used for own loopdetection frames
685 * @loopdetect_lasttime: time when the loopdetection frames were sent
686 * @loopdetect_next: how many periods to wait for the next loopdetect process
687 * @bcast_duplist: recently received broadcast packets array (for broadcast
688 * duplicate suppression)
689 * @bcast_duplist_curr: index of last broadcast packet added to bcast_duplist
690 * @bcast_duplist_lock: lock protecting bcast_duplist & bcast_duplist_curr
691 * @claim_dest: local claim data (e.g. claim group)
692 * @work: work queue callback item for cleanups & bla announcements
694 struct batadv_priv_bla {
695 atomic_t num_requests;
696 struct batadv_hashtable *claim_hash;
697 struct batadv_hashtable *backbone_hash;
698 u8 loopdetect_addr[ETH_ALEN];
699 unsigned long loopdetect_lasttime;
700 atomic_t loopdetect_next;
701 struct batadv_bcast_duplist_entry bcast_duplist[BATADV_DUPLIST_SIZE];
702 int bcast_duplist_curr;
703 /* protects bcast_duplist & bcast_duplist_curr */
704 spinlock_t bcast_duplist_lock;
705 struct batadv_bla_claim_dst claim_dest;
706 struct delayed_work work;
710 #ifdef CONFIG_BATMAN_ADV_DEBUG
713 * struct batadv_priv_debug_log - debug logging data
714 * @log_buff: buffer holding the logs (ring bufer)
715 * @log_start: index of next character to read
716 * @log_end: index of next character to write
717 * @lock: lock protecting log_buff, log_start & log_end
718 * @queue_wait: log reader's wait queue
720 struct batadv_priv_debug_log {
721 char log_buff[BATADV_LOG_BUF_LEN];
722 unsigned long log_start;
723 unsigned long log_end;
724 spinlock_t lock; /* protects log_buff, log_start and log_end */
725 wait_queue_head_t queue_wait;
730 * struct batadv_priv_gw - per mesh interface gateway data
731 * @gateway_list: list of available gateway nodes
732 * @list_lock: lock protecting gateway_list & curr_gw
733 * @curr_gw: pointer to currently selected gateway node
734 * @mode: gateway operation: off, client or server (see batadv_gw_modes)
735 * @sel_class: gateway selection class (applies if gw_mode client)
736 * @bandwidth_down: advertised uplink download bandwidth (if gw_mode server)
737 * @bandwidth_up: advertised uplink upload bandwidth (if gw_mode server)
738 * @reselect: bool indicating a gateway re-selection is in progress
740 struct batadv_priv_gw {
741 struct hlist_head gateway_list;
742 spinlock_t list_lock; /* protects gateway_list & curr_gw */
743 struct batadv_gw_node __rcu *curr_gw; /* rcu protected pointer */
746 atomic_t bandwidth_down;
747 atomic_t bandwidth_up;
752 * struct batadv_priv_tvlv - per mesh interface tvlv data
753 * @container_list: list of registered tvlv containers to be sent with each OGM
754 * @handler_list: list of the various tvlv content handlers
755 * @container_list_lock: protects tvlv container list access
756 * @handler_list_lock: protects handler list access
758 struct batadv_priv_tvlv {
759 struct hlist_head container_list;
760 struct hlist_head handler_list;
761 spinlock_t container_list_lock; /* protects container_list */
762 spinlock_t handler_list_lock; /* protects handler_list */
765 #ifdef CONFIG_BATMAN_ADV_DAT
768 * struct batadv_priv_dat - per mesh interface DAT private data
769 * @addr: node DAT address
770 * @hash: hashtable representing the local ARP cache
771 * @work: work queue callback item for cache purging
773 struct batadv_priv_dat {
774 batadv_dat_addr_t addr;
775 struct batadv_hashtable *hash;
776 struct delayed_work work;
780 #ifdef CONFIG_BATMAN_ADV_MCAST
782 * struct batadv_mcast_querier_state - IGMP/MLD querier state when bridged
783 * @exists: whether a querier exists in the mesh
784 * @shadowing: if a querier exists, whether it is potentially shadowing
785 * multicast listeners (i.e. querier is behind our own bridge segment)
787 struct batadv_mcast_querier_state {
793 * struct batadv_priv_mcast - per mesh interface mcast data
794 * @mla_list: list of multicast addresses we are currently announcing via TT
795 * @want_all_unsnoopables_list: a list of orig_nodes wanting all unsnoopable
797 * @want_all_ipv4_list: a list of orig_nodes wanting all IPv4 multicast traffic
798 * @want_all_ipv6_list: a list of orig_nodes wanting all IPv6 multicast traffic
799 * @querier_ipv4: the current state of an IGMP querier in the mesh
800 * @querier_ipv6: the current state of an MLD querier in the mesh
801 * @flags: the flags we have last sent in our mcast tvlv
802 * @enabled: whether the multicast tvlv is currently enabled
803 * @bridged: whether the soft interface has a bridge on top
804 * @mla_lock: a lock protecting mla_list and mla_flags
805 * @num_disabled: number of nodes that have no mcast tvlv
806 * @num_want_all_unsnoopables: number of nodes wanting unsnoopable IP traffic
807 * @num_want_all_ipv4: counter for items in want_all_ipv4_list
808 * @num_want_all_ipv6: counter for items in want_all_ipv6_list
809 * @want_lists_lock: lock for protecting modifications to mcast want lists
810 * (traversals are rcu-locked)
811 * @work: work queue callback item for multicast TT and TVLV updates
813 struct batadv_priv_mcast {
814 struct hlist_head mla_list; /* see __batadv_mcast_mla_update() */
815 struct hlist_head want_all_unsnoopables_list;
816 struct hlist_head want_all_ipv4_list;
817 struct hlist_head want_all_ipv6_list;
818 struct batadv_mcast_querier_state querier_ipv4;
819 struct batadv_mcast_querier_state querier_ipv6;
824 atomic_t num_disabled;
825 atomic_t num_want_all_unsnoopables;
826 atomic_t num_want_all_ipv4;
827 atomic_t num_want_all_ipv6;
828 /* protects want_all_{unsnoopables,ipv4,ipv6}_list */
829 spinlock_t want_lists_lock;
830 struct delayed_work work;
835 * struct batadv_priv_nc - per mesh interface network coding private data
836 * @work: work queue callback item for cleanup
837 * @debug_dir: dentry for nc subdir in batman-adv directory in debugfs
838 * @min_tq: only consider neighbors for encoding if neigh_tq > min_tq
839 * @max_fwd_delay: maximum packet forward delay to allow coding of packets
840 * @max_buffer_time: buffer time for sniffed packets used to decoding
841 * @timestamp_fwd_flush: timestamp of last forward packet queue flush
842 * @timestamp_sniffed_purge: timestamp of last sniffed packet queue purge
843 * @coding_hash: Hash table used to buffer skbs while waiting for another
844 * incoming skb to code it with. Skbs are added to the buffer just before being
845 * forwarded in routing.c
846 * @decoding_hash: Hash table used to buffer skbs that might be needed to decode
847 * a received coded skb. The buffer is used for 1) skbs arriving on the
848 * soft-interface; 2) skbs overheard on the hard-interface; and 3) skbs
849 * forwarded by batman-adv.
851 struct batadv_priv_nc {
852 struct delayed_work work;
853 struct dentry *debug_dir;
857 unsigned long timestamp_fwd_flush;
858 unsigned long timestamp_sniffed_purge;
859 struct batadv_hashtable *coding_hash;
860 struct batadv_hashtable *decoding_hash;
864 * struct batadv_tp_unacked - unacked packet meta-information
865 * @seqno: seqno of the unacked packet
866 * @len: length of the packet
867 * @list: list node for batadv_tp_vars::unacked_list
869 * This struct is supposed to represent a buffer unacked packet. However, since
870 * the purpose of the TP meter is to count the traffic only, there is no need to
871 * store the entire sk_buff, the starting offset and the length are enough
873 struct batadv_tp_unacked {
876 struct list_head list;
880 * enum batadv_tp_meter_role - Modus in tp meter session
881 * @BATADV_TP_RECEIVER: Initialized as receiver
882 * @BATADV_TP_SENDER: Initialized as sender
884 enum batadv_tp_meter_role {
890 * struct batadv_tp_vars - tp meter private variables per session
891 * @list: list node for bat_priv::tp_list
892 * @timer: timer for ack (receiver) and retry (sender)
893 * @bat_priv: pointer to the mesh object
894 * @start_time: start time in jiffies
895 * @other_end: mac address of remote
896 * @role: receiver/sender modi
897 * @sending: sending binary semaphore: 1 if sending, 0 is not
898 * @reason: reason for a stopped session
899 * @finish_work: work item for the finishing procedure
900 * @test_length: test length in milliseconds
901 * @session: TP session identifier
902 * @icmp_uid: local ICMP "socket" index
903 * @dec_cwnd: decimal part of the cwnd used during linear growth
904 * @cwnd: current size of the congestion window
905 * @cwnd_lock: lock do protect @cwnd & @dec_cwnd
906 * @ss_threshold: Slow Start threshold. Once cwnd exceeds this value the
907 * connection switches to the Congestion Avoidance state
908 * @last_acked: last acked byte
909 * @last_sent: last sent byte, not yet acked
910 * @tot_sent: amount of data sent/ACKed so far
911 * @dup_acks: duplicate ACKs counter
912 * @fast_recovery: true if in Fast Recovery mode
913 * @recover: last sent seqno when entering Fast Recovery
914 * @rto: sender timeout
915 * @srtt: smoothed RTT scaled by 2^3
916 * @rttvar: RTT variation scaled by 2^2
917 * @more_bytes: waiting queue anchor when waiting for more ack/retry timeout
918 * @prerandom_offset: offset inside the prerandom buffer
919 * @prerandom_lock: spinlock protecting access to prerandom_offset
920 * @last_recv: last in-order received packet
921 * @unacked_list: list of unacked packets (meta-info only)
922 * @unacked_lock: protect unacked_list
923 * @last_recv_time: time time (jiffies) a msg was received
924 * @refcount: number of context where the object is used
925 * @rcu: struct used for freeing in an RCU-safe manner
927 struct batadv_tp_vars {
928 struct hlist_node list;
929 struct timer_list timer;
930 struct batadv_priv *bat_priv;
931 unsigned long start_time;
932 u8 other_end[ETH_ALEN];
933 enum batadv_tp_meter_role role;
935 enum batadv_tp_meter_reason reason;
936 struct delayed_work finish_work;
941 /* sender variables */
944 spinlock_t cwnd_lock; /* Protects cwnd & dec_cwnd */
955 wait_queue_head_t more_bytes;
956 u32 prerandom_offset;
957 spinlock_t prerandom_lock; /* Protects prerandom_offset */
959 /* receiver variables */
961 struct list_head unacked_list;
962 spinlock_t unacked_lock; /* Protects unacked_list */
963 unsigned long last_recv_time;
964 struct kref refcount;
969 * struct batadv_softif_vlan - per VLAN attributes set
970 * @bat_priv: pointer to the mesh object
971 * @vid: VLAN identifier
972 * @kobj: kobject for sysfs vlan subdirectory
973 * @ap_isolation: AP isolation state
974 * @tt: TT private attributes (VLAN specific)
975 * @list: list node for bat_priv::softif_vlan_list
976 * @refcount: number of context where this object is currently in use
977 * @rcu: struct used for freeing in a RCU-safe manner
979 struct batadv_softif_vlan {
980 struct batadv_priv *bat_priv;
982 struct kobject *kobj;
983 atomic_t ap_isolation; /* boolean */
984 struct batadv_vlan_tt tt;
985 struct hlist_node list;
986 struct kref refcount;
991 * struct batadv_priv_bat_v - B.A.T.M.A.N. V per soft-interface private data
992 * @ogm_buff: buffer holding the OGM packet
993 * @ogm_buff_len: length of the OGM packet buffer
994 * @ogm_seqno: OGM sequence number - used to identify each OGM
995 * @ogm_buff_mutex: lock protecting ogm_buff and ogm_buff_len
996 * @ogm_wq: workqueue used to schedule OGM transmissions
998 struct batadv_priv_bat_v {
999 unsigned char *ogm_buff;
1002 struct mutex ogm_buff_mutex;
1003 struct delayed_work ogm_wq;
1007 * struct batadv_priv - per mesh interface data
1008 * @mesh_state: current status of the mesh (inactive/active/deactivating)
1009 * @soft_iface: net device which holds this struct as private data
1010 * @bat_counters: mesh internal traffic statistic counters (see batadv_counters)
1011 * @aggregated_ogms: bool indicating whether OGM aggregation is enabled
1012 * @bonding: bool indicating whether traffic bonding is enabled
1013 * @fragmentation: bool indicating whether traffic fragmentation is enabled
1014 * @packet_size_max: max packet size that can be transmitted via
1015 * multiple fragmented skbs or a single frame if fragmentation is disabled
1016 * @frag_seqno: incremental counter to identify chains of egress fragments
1017 * @bridge_loop_avoidance: bool indicating whether bridge loop avoidance is
1019 * @distributed_arp_table: bool indicating whether distributed ARP table is
1021 * @multicast_mode: Enable or disable multicast optimizations on this node's
1022 * sender/originating side
1023 * @orig_interval: OGM broadcast interval in milliseconds
1024 * @hop_penalty: penalty which will be applied to an OGM's tq-field on every hop
1025 * @log_level: configured log level (see batadv_dbg_level)
1026 * @isolation_mark: the skb->mark value used to match packets for AP isolation
1027 * @isolation_mark_mask: bitmask identifying the bits in skb->mark to be used
1028 * for the isolation mark
1029 * @bcast_seqno: last sent broadcast packet sequence number
1030 * @bcast_queue_left: number of remaining buffered broadcast packet slots
1031 * @batman_queue_left: number of remaining OGM packet slots
1032 * @num_ifaces: number of interfaces assigned to this mesh interface
1033 * @mesh_obj: kobject for sysfs mesh subdirectory
1034 * @debug_dir: dentry for debugfs batman-adv subdirectory
1035 * @forw_bat_list: list of aggregated OGMs that will be forwarded
1036 * @forw_bcast_list: list of broadcast packets that will be rebroadcasted
1037 * @tp_list: list of tp sessions
1038 * @tp_num: number of currently active tp sessions
1039 * @orig_hash: hash table containing mesh participants (orig nodes)
1040 * @forw_bat_list_lock: lock protecting forw_bat_list
1041 * @forw_bcast_list_lock: lock protecting forw_bcast_list
1042 * @tp_list_lock: spinlock protecting @tp_list
1043 * @orig_work: work queue callback item for orig node purging
1044 * @primary_if: one of the hard-interfaces assigned to this mesh interface
1045 * becomes the primary interface
1046 * @algo_ops: routing algorithm used by this mesh interface
1047 * @softif_vlan_list: a list of softif_vlan structs, one per VLAN created on top
1048 * of the mesh interface represented by this object
1049 * @softif_vlan_list_lock: lock protecting softif_vlan_list
1050 * @bla: bridge loope avoidance data
1051 * @debug_log: holding debug logging relevant data
1053 * @tt: translation table data
1054 * @tvlv: type-version-length-value data
1055 * @dat: distributed arp table data
1056 * @mcast: multicast data
1057 * @network_coding: bool indicating whether network coding is enabled
1058 * @nc: network coding data
1059 * @bat_v: B.A.T.M.A.N. V per soft-interface private data
1061 struct batadv_priv {
1062 atomic_t mesh_state;
1063 struct net_device *soft_iface;
1064 u64 __percpu *bat_counters; /* Per cpu counters */
1065 atomic_t aggregated_ogms;
1067 atomic_t fragmentation;
1068 atomic_t packet_size_max;
1069 atomic_t frag_seqno;
1070 #ifdef CONFIG_BATMAN_ADV_BLA
1071 atomic_t bridge_loop_avoidance;
1073 #ifdef CONFIG_BATMAN_ADV_DAT
1074 atomic_t distributed_arp_table;
1076 #ifdef CONFIG_BATMAN_ADV_MCAST
1077 atomic_t multicast_mode;
1079 atomic_t orig_interval;
1080 atomic_t hop_penalty;
1081 #ifdef CONFIG_BATMAN_ADV_DEBUG
1085 u32 isolation_mark_mask;
1086 atomic_t bcast_seqno;
1087 atomic_t bcast_queue_left;
1088 atomic_t batman_queue_left;
1089 unsigned int num_ifaces;
1090 struct kobject *mesh_obj;
1091 struct dentry *debug_dir;
1092 struct hlist_head forw_bat_list;
1093 struct hlist_head forw_bcast_list;
1094 struct hlist_head tp_list;
1095 struct batadv_hashtable *orig_hash;
1096 spinlock_t forw_bat_list_lock; /* protects forw_bat_list */
1097 spinlock_t forw_bcast_list_lock; /* protects forw_bcast_list */
1098 spinlock_t tp_list_lock; /* protects tp_list */
1100 struct delayed_work orig_work;
1101 struct batadv_hard_iface __rcu *primary_if; /* rcu protected pointer */
1102 struct batadv_algo_ops *algo_ops;
1103 struct hlist_head softif_vlan_list;
1104 spinlock_t softif_vlan_list_lock; /* protects softif_vlan_list */
1105 #ifdef CONFIG_BATMAN_ADV_BLA
1106 struct batadv_priv_bla bla;
1108 #ifdef CONFIG_BATMAN_ADV_DEBUG
1109 struct batadv_priv_debug_log *debug_log;
1111 struct batadv_priv_gw gw;
1112 struct batadv_priv_tt tt;
1113 struct batadv_priv_tvlv tvlv;
1114 #ifdef CONFIG_BATMAN_ADV_DAT
1115 struct batadv_priv_dat dat;
1117 #ifdef CONFIG_BATMAN_ADV_MCAST
1118 struct batadv_priv_mcast mcast;
1120 #ifdef CONFIG_BATMAN_ADV_NC
1121 atomic_t network_coding;
1122 struct batadv_priv_nc nc;
1123 #endif /* CONFIG_BATMAN_ADV_NC */
1124 #ifdef CONFIG_BATMAN_ADV_BATMAN_V
1125 struct batadv_priv_bat_v bat_v;
1130 * struct batadv_socket_client - layer2 icmp socket client data
1131 * @queue_list: packet queue for packets destined for this socket client
1132 * @queue_len: number of packets in the packet queue (queue_list)
1133 * @index: socket client's index in the batadv_socket_client_hash
1134 * @lock: lock protecting queue_list, queue_len & index
1135 * @queue_wait: socket client's wait queue
1136 * @bat_priv: pointer to soft_iface this client belongs to
1138 struct batadv_socket_client {
1139 struct list_head queue_list;
1140 unsigned int queue_len;
1141 unsigned char index;
1142 spinlock_t lock; /* protects queue_list, queue_len & index */
1143 wait_queue_head_t queue_wait;
1144 struct batadv_priv *bat_priv;
1148 * struct batadv_socket_packet - layer2 icmp packet for socket client
1149 * @list: list node for batadv_socket_client::queue_list
1150 * @icmp_len: size of the layer2 icmp packet
1151 * @icmp_packet: layer2 icmp packet
1153 struct batadv_socket_packet {
1154 struct list_head list;
1156 u8 icmp_packet[BATADV_ICMP_MAX_PACKET_SIZE];
1159 #ifdef CONFIG_BATMAN_ADV_BLA
1162 * struct batadv_bla_backbone_gw - batman-adv gateway bridged into the LAN
1163 * @orig: originator address of backbone node (mac address of primary iface)
1164 * @vid: vlan id this gateway was detected on
1165 * @hash_entry: hlist node for batadv_priv_bla::backbone_hash
1166 * @bat_priv: pointer to soft_iface this backbone gateway belongs to
1167 * @lasttime: last time we heard of this backbone gw
1168 * @wait_periods: grace time for bridge forward delays and bla group forming at
1169 * bootup phase - no bcast traffic is formwared until it has elapsed
1170 * @request_sent: if this bool is set to true we are out of sync with this
1171 * backbone gateway - no bcast traffic is formwared until the situation was
1173 * @crc: crc16 checksum over all claims
1174 * @crc_lock: lock protecting crc
1175 * @report_work: work struct for reporting detected loops
1176 * @refcount: number of contexts the object is used
1177 * @rcu: struct used for freeing in an RCU-safe manner
1179 struct batadv_bla_backbone_gw {
1182 struct hlist_node hash_entry;
1183 struct batadv_priv *bat_priv;
1184 unsigned long lasttime;
1185 atomic_t wait_periods;
1186 atomic_t request_sent;
1188 spinlock_t crc_lock; /* protects crc */
1189 struct work_struct report_work;
1190 struct kref refcount;
1191 struct rcu_head rcu;
1195 * struct batadv_bla_claim - claimed non-mesh client structure
1196 * @addr: mac address of claimed non-mesh client
1197 * @vid: vlan id this client was detected on
1198 * @backbone_gw: pointer to backbone gw claiming this client
1199 * @backbone_lock: lock protecting backbone_gw pointer
1200 * @lasttime: last time we heard of claim (locals only)
1201 * @hash_entry: hlist node for batadv_priv_bla::claim_hash
1202 * @refcount: number of contexts the object is used
1203 * @rcu: struct used for freeing in an RCU-safe manner
1205 struct batadv_bla_claim {
1208 struct batadv_bla_backbone_gw *backbone_gw;
1209 spinlock_t backbone_lock; /* protects backbone_gw */
1210 unsigned long lasttime;
1211 struct hlist_node hash_entry;
1212 struct rcu_head rcu;
1213 struct kref refcount;
1218 * struct batadv_tt_common_entry - tt local & tt global common data
1219 * @addr: mac address of non-mesh client
1220 * @vid: VLAN identifier
1221 * @hash_entry: hlist node for batadv_priv_tt::local_hash or for
1222 * batadv_priv_tt::global_hash
1223 * @flags: various state handling flags (see batadv_tt_client_flags)
1224 * @added_at: timestamp used for purging stale tt common entries
1225 * @refcount: number of contexts the object is used
1226 * @rcu: struct used for freeing in an RCU-safe manner
1228 struct batadv_tt_common_entry {
1231 struct hlist_node hash_entry;
1233 unsigned long added_at;
1234 struct kref refcount;
1235 struct rcu_head rcu;
1239 * struct batadv_tt_local_entry - translation table local entry data
1240 * @common: general translation table data
1241 * @last_seen: timestamp used for purging stale tt local entries
1242 * @vlan: soft-interface vlan of the entry
1244 struct batadv_tt_local_entry {
1245 struct batadv_tt_common_entry common;
1246 unsigned long last_seen;
1247 struct batadv_softif_vlan *vlan;
1251 * struct batadv_tt_global_entry - translation table global entry data
1252 * @common: general translation table data
1253 * @orig_list: list of orig nodes announcing this non-mesh client
1254 * @orig_list_count: number of items in the orig_list
1255 * @list_lock: lock protecting orig_list
1256 * @roam_at: time at which TT_GLOBAL_ROAM was set
1258 struct batadv_tt_global_entry {
1259 struct batadv_tt_common_entry common;
1260 struct hlist_head orig_list;
1261 atomic_t orig_list_count;
1262 spinlock_t list_lock; /* protects orig_list */
1263 unsigned long roam_at;
1267 * struct batadv_tt_orig_list_entry - orig node announcing a non-mesh client
1268 * @orig_node: pointer to orig node announcing this non-mesh client
1269 * @ttvn: translation table version number which added the non-mesh client
1270 * @flags: per orig entry TT sync flags
1271 * @list: list node for batadv_tt_global_entry::orig_list
1272 * @refcount: number of contexts the object is used
1273 * @rcu: struct used for freeing in an RCU-safe manner
1275 struct batadv_tt_orig_list_entry {
1276 struct batadv_orig_node *orig_node;
1279 struct hlist_node list;
1280 struct kref refcount;
1281 struct rcu_head rcu;
1285 * struct batadv_tt_change_node - structure for tt changes occurred
1286 * @list: list node for batadv_priv_tt::changes_list
1287 * @change: holds the actual translation table diff data
1289 struct batadv_tt_change_node {
1290 struct list_head list;
1291 struct batadv_tvlv_tt_change change;
1295 * struct batadv_tt_req_node - data to keep track of the tt requests in flight
1296 * @addr: mac address address of the originator this request was sent to
1297 * @issued_at: timestamp used for purging stale tt requests
1298 * @refcount: number of contexts the object is used by
1299 * @list: list node for batadv_priv_tt::req_list
1301 struct batadv_tt_req_node {
1303 unsigned long issued_at;
1304 struct kref refcount;
1305 struct hlist_node list;
1309 * struct batadv_tt_roam_node - roaming client data
1310 * @addr: mac address of the client in the roaming phase
1311 * @counter: number of allowed roaming events per client within a single
1312 * OGM interval (changes are committed with each OGM)
1313 * @first_time: timestamp used for purging stale roaming node entries
1314 * @list: list node for batadv_priv_tt::roam_list
1316 struct batadv_tt_roam_node {
1319 unsigned long first_time;
1320 struct list_head list;
1324 * struct batadv_nc_node - network coding node
1325 * @list: next and prev pointer for the list handling
1326 * @addr: the node's mac address
1327 * @refcount: number of contexts the object is used by
1328 * @rcu: struct used for freeing in an RCU-safe manner
1329 * @orig_node: pointer to corresponding orig node struct
1330 * @last_seen: timestamp of last ogm received from this node
1332 struct batadv_nc_node {
1333 struct list_head list;
1335 struct kref refcount;
1336 struct rcu_head rcu;
1337 struct batadv_orig_node *orig_node;
1338 unsigned long last_seen;
1342 * struct batadv_nc_path - network coding path
1343 * @hash_entry: next and prev pointer for the list handling
1344 * @rcu: struct used for freeing in an RCU-safe manner
1345 * @refcount: number of contexts the object is used by
1346 * @packet_list: list of buffered packets for this path
1347 * @packet_list_lock: access lock for packet list
1348 * @next_hop: next hop (destination) of path
1349 * @prev_hop: previous hop (source) of path
1350 * @last_valid: timestamp for last validation of path
1352 struct batadv_nc_path {
1353 struct hlist_node hash_entry;
1354 struct rcu_head rcu;
1355 struct kref refcount;
1356 struct list_head packet_list;
1357 spinlock_t packet_list_lock; /* Protects packet_list */
1358 u8 next_hop[ETH_ALEN];
1359 u8 prev_hop[ETH_ALEN];
1360 unsigned long last_valid;
1364 * struct batadv_nc_packet - network coding packet used when coding and
1366 * @list: next and prev pointer for the list handling
1367 * @packet_id: crc32 checksum of skb data
1368 * @timestamp: field containing the info when the packet was added to path
1369 * @neigh_node: pointer to original next hop neighbor of skb
1370 * @skb: skb which can be encoded or used for decoding
1371 * @nc_path: pointer to path this nc packet is attached to
1373 struct batadv_nc_packet {
1374 struct list_head list;
1376 unsigned long timestamp;
1377 struct batadv_neigh_node *neigh_node;
1378 struct sk_buff *skb;
1379 struct batadv_nc_path *nc_path;
1383 * struct batadv_skb_cb - control buffer structure used to store private data
1384 * relevant to batman-adv in the skb->cb buffer in skbs.
1385 * @decoded: Marks a skb as decoded, which is checked when searching for coding
1386 * opportunities in network-coding.c
1387 * @num_bcasts: Counter for broadcast packet retransmissions
1389 struct batadv_skb_cb {
1391 unsigned int num_bcasts;
1395 * struct batadv_forw_packet - structure for bcast packets to be sent/forwarded
1396 * @list: list node for batadv_priv::forw_{bat,bcast}_list
1397 * @cleanup_list: list node for purging functions
1398 * @send_time: execution time for delayed_work (packet sending)
1399 * @own: bool for locally generated packets (local OGMs are re-scheduled after
1401 * @skb: bcast packet's skb buffer
1402 * @packet_len: size of aggregated OGM packet inside the skb buffer
1403 * @direct_link_flags: direct link flags for aggregated OGM packets
1404 * @num_packets: counter for aggregated OGMv1 packets
1405 * @delayed_work: work queue callback item for packet sending
1406 * @if_incoming: pointer to incoming hard-iface or primary iface if
1407 * locally generated packet
1408 * @if_outgoing: packet where the packet should be sent to, or NULL if
1410 * @queue_left: The queue (counter) this packet was applied to
1412 struct batadv_forw_packet {
1413 struct hlist_node list;
1414 struct hlist_node cleanup_list;
1415 unsigned long send_time;
1417 struct sk_buff *skb;
1419 u32 direct_link_flags;
1421 struct delayed_work delayed_work;
1422 struct batadv_hard_iface *if_incoming;
1423 struct batadv_hard_iface *if_outgoing;
1424 atomic_t *queue_left;
1428 * struct batadv_algo_iface_ops - mesh algorithm callbacks (interface specific)
1429 * @activate: start routing mechanisms when hard-interface is brought up
1431 * @enable: init routing info when hard-interface is enabled
1432 * @enabled: notification when hard-interface was enabled (optional)
1433 * @disable: de-init routing info when hard-interface is disabled
1434 * @update_mac: (re-)init mac addresses of the protocol information
1435 * belonging to this hard-interface
1436 * @primary_set: called when primary interface is selected / changed
1438 struct batadv_algo_iface_ops {
1439 void (*activate)(struct batadv_hard_iface *hard_iface);
1440 int (*enable)(struct batadv_hard_iface *hard_iface);
1441 void (*enabled)(struct batadv_hard_iface *hard_iface);
1442 void (*disable)(struct batadv_hard_iface *hard_iface);
1443 void (*update_mac)(struct batadv_hard_iface *hard_iface);
1444 void (*primary_set)(struct batadv_hard_iface *hard_iface);
1448 * struct batadv_algo_neigh_ops - mesh algorithm callbacks (neighbour specific)
1449 * @hardif_init: called on creation of single hop entry
1451 * @cmp: compare the metrics of two neighbors for their respective outgoing
1453 * @is_similar_or_better: check if neigh1 is equally similar or better than
1454 * neigh2 for their respective outgoing interface from the metric prospective
1455 * @print: print the single hop neighbor list (optional)
1456 * @dump: dump neighbors to a netlink socket (optional)
1458 struct batadv_algo_neigh_ops {
1459 void (*hardif_init)(struct batadv_hardif_neigh_node *neigh);
1460 int (*cmp)(struct batadv_neigh_node *neigh1,
1461 struct batadv_hard_iface *if_outgoing1,
1462 struct batadv_neigh_node *neigh2,
1463 struct batadv_hard_iface *if_outgoing2);
1464 bool (*is_similar_or_better)(struct batadv_neigh_node *neigh1,
1465 struct batadv_hard_iface *if_outgoing1,
1466 struct batadv_neigh_node *neigh2,
1467 struct batadv_hard_iface *if_outgoing2);
1468 #ifdef CONFIG_BATMAN_ADV_DEBUGFS
1469 void (*print)(struct batadv_priv *priv, struct seq_file *seq);
1471 void (*dump)(struct sk_buff *msg, struct netlink_callback *cb,
1472 struct batadv_priv *priv,
1473 struct batadv_hard_iface *hard_iface);
1477 * struct batadv_algo_orig_ops - mesh algorithm callbacks (originator specific)
1478 * @free: free the resources allocated by the routing algorithm for an orig_node
1480 * @add_if: ask the routing algorithm to apply the needed changes to the
1481 * orig_node due to a new hard-interface being added into the mesh (optional)
1482 * @del_if: ask the routing algorithm to apply the needed changes to the
1483 * orig_node due to an hard-interface being removed from the mesh (optional)
1484 * @print: print the originator table (optional)
1485 * @dump: dump originators to a netlink socket (optional)
1487 struct batadv_algo_orig_ops {
1488 void (*free)(struct batadv_orig_node *orig_node);
1489 int (*add_if)(struct batadv_orig_node *orig_node,
1490 unsigned int max_if_num);
1491 int (*del_if)(struct batadv_orig_node *orig_node,
1492 unsigned int max_if_num, unsigned int del_if_num);
1493 #ifdef CONFIG_BATMAN_ADV_DEBUGFS
1494 void (*print)(struct batadv_priv *priv, struct seq_file *seq,
1495 struct batadv_hard_iface *hard_iface);
1497 void (*dump)(struct sk_buff *msg, struct netlink_callback *cb,
1498 struct batadv_priv *priv,
1499 struct batadv_hard_iface *hard_iface);
1503 * struct batadv_algo_gw_ops - mesh algorithm callbacks (GW specific)
1504 * @init_sel_class: initialize GW selection class (optional)
1505 * @store_sel_class: parse and stores a new GW selection class (optional)
1506 * @show_sel_class: prints the current GW selection class (optional)
1507 * @get_best_gw_node: select the best GW from the list of available nodes
1509 * @is_eligible: check if a newly discovered GW is a potential candidate for
1510 * the election as best GW (optional)
1511 * @print: print the gateway table (optional)
1512 * @dump: dump gateways to a netlink socket (optional)
1514 struct batadv_algo_gw_ops {
1515 void (*init_sel_class)(struct batadv_priv *bat_priv);
1516 ssize_t (*store_sel_class)(struct batadv_priv *bat_priv, char *buff,
1518 ssize_t (*show_sel_class)(struct batadv_priv *bat_priv, char *buff);
1519 struct batadv_gw_node *(*get_best_gw_node)
1520 (struct batadv_priv *bat_priv);
1521 bool (*is_eligible)(struct batadv_priv *bat_priv,
1522 struct batadv_orig_node *curr_gw_orig,
1523 struct batadv_orig_node *orig_node);
1524 #ifdef CONFIG_BATMAN_ADV_DEBUGFS
1525 void (*print)(struct batadv_priv *bat_priv, struct seq_file *seq);
1527 void (*dump)(struct sk_buff *msg, struct netlink_callback *cb,
1528 struct batadv_priv *priv);
1532 * struct batadv_algo_ops - mesh algorithm callbacks
1533 * @list: list node for the batadv_algo_list
1534 * @name: name of the algorithm
1535 * @iface: callbacks related to interface handling
1536 * @neigh: callbacks related to neighbors handling
1537 * @orig: callbacks related to originators handling
1538 * @gw: callbacks related to GW mode
1540 struct batadv_algo_ops {
1541 struct hlist_node list;
1543 struct batadv_algo_iface_ops iface;
1544 struct batadv_algo_neigh_ops neigh;
1545 struct batadv_algo_orig_ops orig;
1546 struct batadv_algo_gw_ops gw;
1550 * struct batadv_dat_entry - it is a single entry of batman-adv ARP backend. It
1551 * is used to stored ARP entries needed for the global DAT cache
1552 * @ip: the IPv4 corresponding to this DAT/ARP entry
1553 * @mac_addr: the MAC address associated to the stored IPv4
1554 * @vid: the vlan ID associated to this entry
1555 * @last_update: time in jiffies when this entry was refreshed last time
1556 * @hash_entry: hlist node for batadv_priv_dat::hash
1557 * @refcount: number of contexts the object is used
1558 * @rcu: struct used for freeing in an RCU-safe manner
1560 struct batadv_dat_entry {
1562 u8 mac_addr[ETH_ALEN];
1564 unsigned long last_update;
1565 struct hlist_node hash_entry;
1566 struct kref refcount;
1567 struct rcu_head rcu;
1571 * struct batadv_hw_addr - a list entry for a MAC address
1572 * @list: list node for the linking of entries
1573 * @addr: the MAC address of this list entry
1575 struct batadv_hw_addr {
1576 struct hlist_node list;
1577 unsigned char addr[ETH_ALEN];
1581 * struct batadv_dat_candidate - candidate destination for DAT operations
1582 * @type: the type of the selected candidate. It can one of the following:
1583 * - BATADV_DAT_CANDIDATE_NOT_FOUND
1584 * - BATADV_DAT_CANDIDATE_ORIG
1585 * @orig_node: if type is BATADV_DAT_CANDIDATE_ORIG this field points to the
1586 * corresponding originator node structure
1588 struct batadv_dat_candidate {
1590 struct batadv_orig_node *orig_node;
1594 * struct batadv_tvlv_container - container for tvlv appended to OGMs
1595 * @list: hlist node for batadv_priv_tvlv::container_list
1596 * @tvlv_hdr: tvlv header information needed to construct the tvlv
1597 * @refcount: number of contexts the object is used
1599 struct batadv_tvlv_container {
1600 struct hlist_node list;
1601 struct batadv_tvlv_hdr tvlv_hdr;
1602 struct kref refcount;
1606 * struct batadv_tvlv_handler - handler for specific tvlv type and version
1607 * @list: hlist node for batadv_priv_tvlv::handler_list
1608 * @ogm_handler: handler callback which is given the tvlv payload to process on
1609 * incoming OGM packets
1610 * @unicast_handler: handler callback which is given the tvlv payload to process
1611 * on incoming unicast tvlv packets
1612 * @type: tvlv type this handler feels responsible for
1613 * @version: tvlv version this handler feels responsible for
1614 * @flags: tvlv handler flags
1615 * @refcount: number of contexts the object is used
1616 * @rcu: struct used for freeing in an RCU-safe manner
1618 struct batadv_tvlv_handler {
1619 struct hlist_node list;
1620 void (*ogm_handler)(struct batadv_priv *bat_priv,
1621 struct batadv_orig_node *orig,
1622 u8 flags, void *tvlv_value, u16 tvlv_value_len);
1623 int (*unicast_handler)(struct batadv_priv *bat_priv,
1625 void *tvlv_value, u16 tvlv_value_len);
1629 struct kref refcount;
1630 struct rcu_head rcu;
1634 * enum batadv_tvlv_handler_flags - tvlv handler flags definitions
1635 * @BATADV_TVLV_HANDLER_OGM_CIFNOTFND: tvlv ogm processing function will call
1636 * this handler even if its type was not found (with no data)
1637 * @BATADV_TVLV_HANDLER_OGM_CALLED: interval tvlv handling flag - the API marks
1638 * a handler as being called, so it won't be called if the
1639 * BATADV_TVLV_HANDLER_OGM_CIFNOTFND flag was set
1641 enum batadv_tvlv_handler_flags {
1642 BATADV_TVLV_HANDLER_OGM_CIFNOTFND = BIT(1),
1643 BATADV_TVLV_HANDLER_OGM_CALLED = BIT(2),
1647 * struct batadv_store_mesh_work - Work queue item to detach add/del interface
1649 * @net_dev: netdevice to add/remove to/from batman-adv soft-interface
1650 * @soft_iface_name: name of soft-interface to modify
1651 * @work: work queue item
1653 struct batadv_store_mesh_work {
1654 struct net_device *net_dev;
1655 char soft_iface_name[IFNAMSIZ];
1656 struct work_struct work;
1659 #endif /* _NET_BATMAN_ADV_TYPES_H_ */