1 /* SPDX-License-Identifier: GPL-2.0 */
2 /* Copyright (C) B.A.T.M.A.N. contributors:
4 * Marek Lindner, Simon Wunderlich
7 #ifndef _NET_BATMAN_ADV_TYPES_H_
8 #define _NET_BATMAN_ADV_TYPES_H_
10 #ifndef _NET_BATMAN_ADV_MAIN_H_
11 #error only "main.h" can be included directly
14 #include <linux/average.h>
15 #include <linux/bitops.h>
16 #include <linux/compiler.h>
18 #include <linux/if_ether.h>
19 #include <linux/kref.h>
20 #include <linux/mutex.h>
21 #include <linux/netdevice.h>
22 #include <linux/netlink.h>
23 #include <linux/sched.h> /* for linux/wait.h */
24 #include <linux/skbuff.h>
25 #include <linux/spinlock.h>
26 #include <linux/timer.h>
27 #include <linux/types.h>
28 #include <linux/wait.h>
29 #include <linux/workqueue.h>
30 #include <uapi/linux/batadv_packet.h>
31 #include <uapi/linux/batman_adv.h>
33 #ifdef CONFIG_BATMAN_ADV_DAT
36 * typedef batadv_dat_addr_t - type used for all DHT addresses
38 * If it is changed, BATADV_DAT_ADDR_MAX is changed as well.
40 * *Please be careful: batadv_dat_addr_t must be UNSIGNED*
42 typedef u16 batadv_dat_addr_t;
44 #endif /* CONFIG_BATMAN_ADV_DAT */
47 * enum batadv_dhcp_recipient - dhcp destination
49 enum batadv_dhcp_recipient {
50 /** @BATADV_DHCP_NO: packet is not a dhcp message */
53 /** @BATADV_DHCP_TO_SERVER: dhcp message is directed to a server */
54 BATADV_DHCP_TO_SERVER,
56 /** @BATADV_DHCP_TO_CLIENT: dhcp message is directed to a client */
57 BATADV_DHCP_TO_CLIENT,
61 * BATADV_TT_REMOTE_MASK - bitmask selecting the flags that are sent over the
64 #define BATADV_TT_REMOTE_MASK 0x00FF
67 * BATADV_TT_SYNC_MASK - bitmask of the flags that need to be kept in sync
68 * among the nodes. These flags are used to compute the global/local CRC
70 #define BATADV_TT_SYNC_MASK 0x00F0
73 * struct batadv_hard_iface_bat_iv - per hard-interface B.A.T.M.A.N. IV data
75 struct batadv_hard_iface_bat_iv {
76 /** @ogm_buff: buffer holding the OGM packet */
77 unsigned char *ogm_buff;
79 /** @ogm_buff_len: length of the OGM packet buffer */
82 /** @ogm_seqno: OGM sequence number - used to identify each OGM */
85 /** @ogm_buff_mutex: lock protecting ogm_buff and ogm_buff_len */
86 struct mutex ogm_buff_mutex;
90 * enum batadv_v_hard_iface_flags - interface flags useful to B.A.T.M.A.N. V
92 enum batadv_v_hard_iface_flags {
94 * @BATADV_FULL_DUPLEX: tells if the connection over this link is
97 BATADV_FULL_DUPLEX = BIT(0),
100 * @BATADV_WARNING_DEFAULT: tells whether we have warned the user that
101 * no throughput data is available for this interface and that default
102 * values are assumed.
104 BATADV_WARNING_DEFAULT = BIT(1),
108 * struct batadv_hard_iface_bat_v - per hard-interface B.A.T.M.A.N. V data
110 struct batadv_hard_iface_bat_v {
111 /** @elp_interval: time interval between two ELP transmissions */
112 atomic_t elp_interval;
114 /** @elp_seqno: current ELP sequence number */
117 /** @elp_skb: base skb containing the ELP message to send */
118 struct sk_buff *elp_skb;
120 /** @elp_wq: workqueue used to schedule ELP transmissions */
121 struct delayed_work elp_wq;
123 /** @aggr_wq: workqueue used to transmit queued OGM packets */
124 struct delayed_work aggr_wq;
126 /** @aggr_list: queue for to be aggregated OGM packets */
127 struct sk_buff_head aggr_list;
129 /** @aggr_len: size of the OGM aggregate (excluding ethernet header) */
130 unsigned int aggr_len;
133 * @throughput_override: throughput override to disable link
136 atomic_t throughput_override;
138 /** @flags: interface specific flags */
143 * enum batadv_hard_iface_wifi_flags - Flags describing the wifi configuration
144 * of a batadv_hard_iface
146 enum batadv_hard_iface_wifi_flags {
147 /** @BATADV_HARDIF_WIFI_WEXT_DIRECT: it is a wext wifi device */
148 BATADV_HARDIF_WIFI_WEXT_DIRECT = BIT(0),
150 /** @BATADV_HARDIF_WIFI_CFG80211_DIRECT: it is a cfg80211 wifi device */
151 BATADV_HARDIF_WIFI_CFG80211_DIRECT = BIT(1),
154 * @BATADV_HARDIF_WIFI_WEXT_INDIRECT: link device is a wext wifi device
156 BATADV_HARDIF_WIFI_WEXT_INDIRECT = BIT(2),
159 * @BATADV_HARDIF_WIFI_CFG80211_INDIRECT: link device is a cfg80211 wifi
162 BATADV_HARDIF_WIFI_CFG80211_INDIRECT = BIT(3),
166 * struct batadv_hard_iface - network device known to batman-adv
168 struct batadv_hard_iface {
169 /** @list: list node for batadv_hardif_list */
170 struct list_head list;
172 /** @if_status: status of the interface for batman-adv */
176 * @num_bcasts: number of payload re-broadcasts on this interface (ARQ)
181 * @wifi_flags: flags whether this is (directly or indirectly) a wifi
186 /** @net_dev: pointer to the net_device */
187 struct net_device *net_dev;
189 /** @refcount: number of contexts the object is used */
190 struct kref refcount;
193 * @batman_adv_ptype: packet type describing packets that should be
194 * processed by batman-adv for this interface
196 struct packet_type batman_adv_ptype;
199 * @soft_iface: the batman-adv interface which uses this network
202 struct net_device *soft_iface;
204 /** @rcu: struct used for freeing in an RCU-safe manner */
208 * @hop_penalty: penalty which will be applied to the tq-field
209 * of an OGM received via this interface
211 atomic_t hop_penalty;
213 /** @bat_iv: per hard-interface B.A.T.M.A.N. IV data */
214 struct batadv_hard_iface_bat_iv bat_iv;
216 #ifdef CONFIG_BATMAN_ADV_BATMAN_V
217 /** @bat_v: per hard-interface B.A.T.M.A.N. V data */
218 struct batadv_hard_iface_bat_v bat_v;
222 * @neigh_list: list of unique single hop neighbors via this interface
224 struct hlist_head neigh_list;
226 /** @neigh_list_lock: lock protecting neigh_list */
227 spinlock_t neigh_list_lock;
231 * struct batadv_orig_ifinfo_bat_iv - B.A.T.M.A.N. IV private orig_ifinfo
234 struct batadv_orig_ifinfo_bat_iv {
236 * @bcast_own: bitfield which counts the number of our OGMs this
237 * orig_node rebroadcasted "back" to us (relative to last_real_seqno)
239 DECLARE_BITMAP(bcast_own, BATADV_TQ_LOCAL_WINDOW_SIZE);
241 /** @bcast_own_sum: sum of bcast_own */
246 * struct batadv_orig_ifinfo - originator info per outgoing interface
248 struct batadv_orig_ifinfo {
249 /** @list: list node for &batadv_orig_node.ifinfo_list */
250 struct hlist_node list;
252 /** @if_outgoing: pointer to outgoing hard-interface */
253 struct batadv_hard_iface *if_outgoing;
255 /** @router: router that should be used to reach this originator */
256 struct batadv_neigh_node __rcu *router;
258 /** @last_real_seqno: last and best known sequence number */
261 /** @last_ttl: ttl of last received packet */
264 /** @last_seqno_forwarded: seqno of the OGM which was forwarded last */
265 u32 last_seqno_forwarded;
267 /** @batman_seqno_reset: time when the batman seqno window was reset */
268 unsigned long batman_seqno_reset;
270 /** @bat_iv: B.A.T.M.A.N. IV private structure */
271 struct batadv_orig_ifinfo_bat_iv bat_iv;
273 /** @refcount: number of contexts the object is used */
274 struct kref refcount;
276 /** @rcu: struct used for freeing in an RCU-safe manner */
281 * struct batadv_frag_table_entry - head in the fragment buffer table
283 struct batadv_frag_table_entry {
284 /** @fragment_list: head of list with fragments */
285 struct hlist_head fragment_list;
287 /** @lock: lock to protect the list of fragments */
290 /** @timestamp: time (jiffy) of last received fragment */
291 unsigned long timestamp;
293 /** @seqno: sequence number of the fragments in the list */
296 /** @size: accumulated size of packets in list */
299 /** @total_size: expected size of the assembled packet */
304 * struct batadv_frag_list_entry - entry in a list of fragments
306 struct batadv_frag_list_entry {
307 /** @list: list node information */
308 struct hlist_node list;
310 /** @skb: fragment */
313 /** @no: fragment number in the set */
318 * struct batadv_vlan_tt - VLAN specific TT attributes
320 struct batadv_vlan_tt {
321 /** @crc: CRC32 checksum of the entries belonging to this vlan */
324 /** @num_entries: number of TT entries for this VLAN */
325 atomic_t num_entries;
329 * struct batadv_orig_node_vlan - VLAN specific data per orig_node
331 struct batadv_orig_node_vlan {
332 /** @vid: the VLAN identifier */
335 /** @tt: VLAN specific TT attributes */
336 struct batadv_vlan_tt tt;
338 /** @list: list node for &batadv_orig_node.vlan_list */
339 struct hlist_node list;
342 * @refcount: number of context where this object is currently in use
344 struct kref refcount;
346 /** @rcu: struct used for freeing in a RCU-safe manner */
351 * struct batadv_orig_bat_iv - B.A.T.M.A.N. IV private orig_node members
353 struct batadv_orig_bat_iv {
355 * @ogm_cnt_lock: lock protecting &batadv_orig_ifinfo_bat_iv.bcast_own,
356 * &batadv_orig_ifinfo_bat_iv.bcast_own_sum,
357 * &batadv_neigh_ifinfo_bat_iv.bat_iv.real_bits and
358 * &batadv_neigh_ifinfo_bat_iv.real_packet_count
360 spinlock_t ogm_cnt_lock;
364 * struct batadv_orig_node - structure for orig_list maintaining nodes of mesh
366 struct batadv_orig_node {
367 /** @orig: originator ethernet address */
370 /** @ifinfo_list: list for routers per outgoing interface */
371 struct hlist_head ifinfo_list;
374 * @last_bonding_candidate: pointer to last ifinfo of last used router
376 struct batadv_orig_ifinfo *last_bonding_candidate;
378 #ifdef CONFIG_BATMAN_ADV_DAT
379 /** @dat_addr: address of the orig node in the distributed hash */
380 batadv_dat_addr_t dat_addr;
383 /** @last_seen: time when last packet from this node was received */
384 unsigned long last_seen;
387 * @bcast_seqno_reset: time when the broadcast seqno window was reset
389 unsigned long bcast_seqno_reset;
391 #ifdef CONFIG_BATMAN_ADV_MCAST
393 * @mcast_handler_lock: synchronizes mcast-capability and -flag changes
395 spinlock_t mcast_handler_lock;
397 /** @mcast_flags: multicast flags announced by the orig node */
401 * @mcast_want_all_unsnoopables_node: a list node for the
402 * mcast.want_all_unsnoopables list
404 struct hlist_node mcast_want_all_unsnoopables_node;
407 * @mcast_want_all_ipv4_node: a list node for the mcast.want_all_ipv4
410 struct hlist_node mcast_want_all_ipv4_node;
412 * @mcast_want_all_ipv6_node: a list node for the mcast.want_all_ipv6
415 struct hlist_node mcast_want_all_ipv6_node;
418 * @mcast_want_all_rtr4_node: a list node for the mcast.want_all_rtr4
421 struct hlist_node mcast_want_all_rtr4_node;
423 * @mcast_want_all_rtr6_node: a list node for the mcast.want_all_rtr6
426 struct hlist_node mcast_want_all_rtr6_node;
429 /** @capabilities: announced capabilities of this originator */
430 unsigned long capabilities;
433 * @capa_initialized: bitfield to remember whether a capability was
436 unsigned long capa_initialized;
438 /** @last_ttvn: last seen translation table version number */
441 /** @tt_buff: last tt changeset this node received from the orig node */
442 unsigned char *tt_buff;
445 * @tt_buff_len: length of the last tt changeset this node received
450 /** @tt_buff_lock: lock that protects tt_buff and tt_buff_len */
451 spinlock_t tt_buff_lock;
454 * @tt_lock: avoids concurrent read from and write to the table. Table
455 * update is made up of two operations (data structure update and
456 * metadata -CRC/TTVN-recalculation) and they have to be executed
457 * atomically in order to avoid another thread to read the
458 * table/metadata between those.
463 * @bcast_bits: bitfield containing the info which payload broadcast
464 * originated from this orig node this host already has seen (relative
465 * to last_bcast_seqno)
467 DECLARE_BITMAP(bcast_bits, BATADV_TQ_LOCAL_WINDOW_SIZE);
470 * @last_bcast_seqno: last broadcast sequence number received by this
473 u32 last_bcast_seqno;
476 * @neigh_list: list of potential next hop neighbor towards this orig
479 struct hlist_head neigh_list;
482 * @neigh_list_lock: lock protecting neigh_list, ifinfo_list,
483 * last_bonding_candidate and router
485 spinlock_t neigh_list_lock;
487 /** @hash_entry: hlist node for &batadv_priv.orig_hash */
488 struct hlist_node hash_entry;
490 /** @bat_priv: pointer to soft_iface this orig node belongs to */
491 struct batadv_priv *bat_priv;
493 /** @bcast_seqno_lock: lock protecting bcast_bits & last_bcast_seqno */
494 spinlock_t bcast_seqno_lock;
496 /** @refcount: number of contexts the object is used */
497 struct kref refcount;
499 /** @rcu: struct used for freeing in an RCU-safe manner */
502 #ifdef CONFIG_BATMAN_ADV_NC
503 /** @in_coding_list: list of nodes this orig can hear */
504 struct list_head in_coding_list;
506 /** @out_coding_list: list of nodes that can hear this orig */
507 struct list_head out_coding_list;
509 /** @in_coding_list_lock: protects in_coding_list */
510 spinlock_t in_coding_list_lock;
512 /** @out_coding_list_lock: protects out_coding_list */
513 spinlock_t out_coding_list_lock;
516 /** @fragments: array with heads for fragment chains */
517 struct batadv_frag_table_entry fragments[BATADV_FRAG_BUFFER_COUNT];
520 * @vlan_list: a list of orig_node_vlan structs, one per VLAN served by
521 * the originator represented by this object
523 struct hlist_head vlan_list;
525 /** @vlan_list_lock: lock protecting vlan_list */
526 spinlock_t vlan_list_lock;
528 /** @bat_iv: B.A.T.M.A.N. IV private structure */
529 struct batadv_orig_bat_iv bat_iv;
533 * enum batadv_orig_capabilities - orig node capabilities
535 enum batadv_orig_capabilities {
537 * @BATADV_ORIG_CAPA_HAS_DAT: orig node has distributed arp table
540 BATADV_ORIG_CAPA_HAS_DAT,
542 /** @BATADV_ORIG_CAPA_HAS_NC: orig node has network coding enabled */
543 BATADV_ORIG_CAPA_HAS_NC,
545 /** @BATADV_ORIG_CAPA_HAS_TT: orig node has tt capability */
546 BATADV_ORIG_CAPA_HAS_TT,
549 * @BATADV_ORIG_CAPA_HAS_MCAST: orig node has some multicast capability
550 * (= orig node announces a tvlv of type BATADV_TVLV_MCAST)
552 BATADV_ORIG_CAPA_HAS_MCAST,
556 * struct batadv_gw_node - structure for orig nodes announcing gw capabilities
558 struct batadv_gw_node {
559 /** @list: list node for &batadv_priv_gw.list */
560 struct hlist_node list;
562 /** @orig_node: pointer to corresponding orig node */
563 struct batadv_orig_node *orig_node;
565 /** @bandwidth_down: advertised uplink download bandwidth */
568 /** @bandwidth_up: advertised uplink upload bandwidth */
571 /** @refcount: number of contexts the object is used */
572 struct kref refcount;
574 /** @rcu: struct used for freeing in an RCU-safe manner */
578 DECLARE_EWMA(throughput, 10, 8)
581 * struct batadv_hardif_neigh_node_bat_v - B.A.T.M.A.N. V private neighbor
584 struct batadv_hardif_neigh_node_bat_v {
585 /** @throughput: ewma link throughput towards this neighbor */
586 struct ewma_throughput throughput;
588 /** @elp_interval: time interval between two ELP transmissions */
591 /** @elp_latest_seqno: latest and best known ELP sequence number */
592 u32 elp_latest_seqno;
595 * @last_unicast_tx: when the last unicast packet has been sent to this
598 unsigned long last_unicast_tx;
602 * struct batadv_hardif_neigh_node - unique neighbor per hard-interface
604 struct batadv_hardif_neigh_node {
605 /** @list: list node for &batadv_hard_iface.neigh_list */
606 struct hlist_node list;
608 /** @addr: the MAC address of the neighboring interface */
612 * @orig: the address of the originator this neighbor node belongs to
616 /** @if_incoming: pointer to incoming hard-interface */
617 struct batadv_hard_iface *if_incoming;
619 /** @last_seen: when last packet via this neighbor was received */
620 unsigned long last_seen;
622 #ifdef CONFIG_BATMAN_ADV_BATMAN_V
623 /** @bat_v: B.A.T.M.A.N. V private data */
624 struct batadv_hardif_neigh_node_bat_v bat_v;
627 /** @refcount: number of contexts the object is used */
628 struct kref refcount;
630 /** @rcu: struct used for freeing in a RCU-safe manner */
635 * struct batadv_neigh_node - structure for single hops neighbors
637 struct batadv_neigh_node {
638 /** @list: list node for &batadv_orig_node.neigh_list */
639 struct hlist_node list;
641 /** @orig_node: pointer to corresponding orig_node */
642 struct batadv_orig_node *orig_node;
644 /** @addr: the MAC address of the neighboring interface */
647 /** @ifinfo_list: list for routing metrics per outgoing interface */
648 struct hlist_head ifinfo_list;
650 /** @ifinfo_lock: lock protecting ifinfo_list and its members */
651 spinlock_t ifinfo_lock;
653 /** @if_incoming: pointer to incoming hard-interface */
654 struct batadv_hard_iface *if_incoming;
656 /** @last_seen: when last packet via this neighbor was received */
657 unsigned long last_seen;
659 /** @hardif_neigh: hardif_neigh of this neighbor */
660 struct batadv_hardif_neigh_node *hardif_neigh;
662 /** @refcount: number of contexts the object is used */
663 struct kref refcount;
665 /** @rcu: struct used for freeing in an RCU-safe manner */
670 * struct batadv_neigh_ifinfo_bat_iv - neighbor information per outgoing
671 * interface for B.A.T.M.A.N. IV
673 struct batadv_neigh_ifinfo_bat_iv {
674 /** @tq_recv: ring buffer of received TQ values from this neigh node */
675 u8 tq_recv[BATADV_TQ_GLOBAL_WINDOW_SIZE];
677 /** @tq_index: ring buffer index */
681 * @tq_avg: averaged tq of all tq values in the ring buffer (tq_recv)
686 * @real_bits: bitfield containing the number of OGMs received from this
687 * neigh node (relative to orig_node->last_real_seqno)
689 DECLARE_BITMAP(real_bits, BATADV_TQ_LOCAL_WINDOW_SIZE);
691 /** @real_packet_count: counted result of real_bits */
692 u8 real_packet_count;
696 * struct batadv_neigh_ifinfo_bat_v - neighbor information per outgoing
697 * interface for B.A.T.M.A.N. V
699 struct batadv_neigh_ifinfo_bat_v {
701 * @throughput: last throughput metric received from originator via this
706 /** @last_seqno: last sequence number known for this neighbor */
711 * struct batadv_neigh_ifinfo - neighbor information per outgoing interface
713 struct batadv_neigh_ifinfo {
714 /** @list: list node for &batadv_neigh_node.ifinfo_list */
715 struct hlist_node list;
717 /** @if_outgoing: pointer to outgoing hard-interface */
718 struct batadv_hard_iface *if_outgoing;
720 /** @bat_iv: B.A.T.M.A.N. IV private structure */
721 struct batadv_neigh_ifinfo_bat_iv bat_iv;
723 #ifdef CONFIG_BATMAN_ADV_BATMAN_V
724 /** @bat_v: B.A.T.M.A.N. V private data */
725 struct batadv_neigh_ifinfo_bat_v bat_v;
728 /** @last_ttl: last received ttl from this neigh node */
731 /** @refcount: number of contexts the object is used */
732 struct kref refcount;
734 /** @rcu: struct used for freeing in a RCU-safe manner */
738 #ifdef CONFIG_BATMAN_ADV_BLA
741 * struct batadv_bcast_duplist_entry - structure for LAN broadcast suppression
743 struct batadv_bcast_duplist_entry {
744 /** @orig: mac address of orig node originating the broadcast */
747 /** @crc: crc32 checksum of broadcast payload */
750 /** @entrytime: time when the broadcast packet was received */
751 unsigned long entrytime;
756 * enum batadv_counters - indices for traffic counters
758 enum batadv_counters {
759 /** @BATADV_CNT_TX: transmitted payload traffic packet counter */
762 /** @BATADV_CNT_TX_BYTES: transmitted payload traffic bytes counter */
766 * @BATADV_CNT_TX_DROPPED: dropped transmission payload traffic packet
769 BATADV_CNT_TX_DROPPED,
771 /** @BATADV_CNT_RX: received payload traffic packet counter */
774 /** @BATADV_CNT_RX_BYTES: received payload traffic bytes counter */
777 /** @BATADV_CNT_FORWARD: forwarded payload traffic packet counter */
781 * @BATADV_CNT_FORWARD_BYTES: forwarded payload traffic bytes counter
783 BATADV_CNT_FORWARD_BYTES,
786 * @BATADV_CNT_MGMT_TX: transmitted routing protocol traffic packet
792 * @BATADV_CNT_MGMT_TX_BYTES: transmitted routing protocol traffic bytes
795 BATADV_CNT_MGMT_TX_BYTES,
798 * @BATADV_CNT_MGMT_RX: received routing protocol traffic packet counter
803 * @BATADV_CNT_MGMT_RX_BYTES: received routing protocol traffic bytes
806 BATADV_CNT_MGMT_RX_BYTES,
808 /** @BATADV_CNT_FRAG_TX: transmitted fragment traffic packet counter */
812 * @BATADV_CNT_FRAG_TX_BYTES: transmitted fragment traffic bytes counter
814 BATADV_CNT_FRAG_TX_BYTES,
816 /** @BATADV_CNT_FRAG_RX: received fragment traffic packet counter */
820 * @BATADV_CNT_FRAG_RX_BYTES: received fragment traffic bytes counter
822 BATADV_CNT_FRAG_RX_BYTES,
824 /** @BATADV_CNT_FRAG_FWD: forwarded fragment traffic packet counter */
828 * @BATADV_CNT_FRAG_FWD_BYTES: forwarded fragment traffic bytes counter
830 BATADV_CNT_FRAG_FWD_BYTES,
833 * @BATADV_CNT_TT_REQUEST_TX: transmitted tt req traffic packet counter
835 BATADV_CNT_TT_REQUEST_TX,
837 /** @BATADV_CNT_TT_REQUEST_RX: received tt req traffic packet counter */
838 BATADV_CNT_TT_REQUEST_RX,
841 * @BATADV_CNT_TT_RESPONSE_TX: transmitted tt resp traffic packet
844 BATADV_CNT_TT_RESPONSE_TX,
847 * @BATADV_CNT_TT_RESPONSE_RX: received tt resp traffic packet counter
849 BATADV_CNT_TT_RESPONSE_RX,
852 * @BATADV_CNT_TT_ROAM_ADV_TX: transmitted tt roam traffic packet
855 BATADV_CNT_TT_ROAM_ADV_TX,
858 * @BATADV_CNT_TT_ROAM_ADV_RX: received tt roam traffic packet counter
860 BATADV_CNT_TT_ROAM_ADV_RX,
862 #ifdef CONFIG_BATMAN_ADV_MCAST
864 * @BATADV_CNT_MCAST_TX: transmitted batman-adv multicast packets
870 * @BATADV_CNT_MCAST_TX_BYTES: transmitted batman-adv multicast packets
873 BATADV_CNT_MCAST_TX_BYTES,
876 * @BATADV_CNT_MCAST_TX_LOCAL: counter for multicast packets which
877 * were locally encapsulated and transmitted as batman-adv multicast
880 BATADV_CNT_MCAST_TX_LOCAL,
883 * @BATADV_CNT_MCAST_TX_LOCAL_BYTES: bytes counter for multicast packets
884 * which were locally encapsulated and transmitted as batman-adv
887 BATADV_CNT_MCAST_TX_LOCAL_BYTES,
890 * @BATADV_CNT_MCAST_RX: received batman-adv multicast packet counter
895 * @BATADV_CNT_MCAST_RX_BYTES: received batman-adv multicast packet
898 BATADV_CNT_MCAST_RX_BYTES,
901 * @BATADV_CNT_MCAST_RX_LOCAL: counter for received batman-adv multicast
902 * packets which were forwarded to the local soft interface
904 BATADV_CNT_MCAST_RX_LOCAL,
907 * @BATADV_CNT_MCAST_RX_LOCAL_BYTES: bytes counter for received
908 * batman-adv multicast packets which were forwarded to the local soft
911 BATADV_CNT_MCAST_RX_LOCAL_BYTES,
914 * @BATADV_CNT_MCAST_FWD: counter for received batman-adv multicast
915 * packets which were forwarded to other, neighboring nodes
917 BATADV_CNT_MCAST_FWD,
920 * @BATADV_CNT_MCAST_FWD_BYTES: bytes counter for received batman-adv
921 * multicast packets which were forwarded to other, neighboring nodes
923 BATADV_CNT_MCAST_FWD_BYTES,
926 #ifdef CONFIG_BATMAN_ADV_DAT
928 * @BATADV_CNT_DAT_GET_TX: transmitted dht GET traffic packet counter
930 BATADV_CNT_DAT_GET_TX,
932 /** @BATADV_CNT_DAT_GET_RX: received dht GET traffic packet counter */
933 BATADV_CNT_DAT_GET_RX,
936 * @BATADV_CNT_DAT_PUT_TX: transmitted dht PUT traffic packet counter
938 BATADV_CNT_DAT_PUT_TX,
940 /** @BATADV_CNT_DAT_PUT_RX: received dht PUT traffic packet counter */
941 BATADV_CNT_DAT_PUT_RX,
944 * @BATADV_CNT_DAT_CACHED_REPLY_TX: transmitted dat cache reply traffic
947 BATADV_CNT_DAT_CACHED_REPLY_TX,
950 #ifdef CONFIG_BATMAN_ADV_NC
952 * @BATADV_CNT_NC_CODE: transmitted nc-combined traffic packet counter
957 * @BATADV_CNT_NC_CODE_BYTES: transmitted nc-combined traffic bytes
960 BATADV_CNT_NC_CODE_BYTES,
963 * @BATADV_CNT_NC_RECODE: transmitted nc-recombined traffic packet
966 BATADV_CNT_NC_RECODE,
969 * @BATADV_CNT_NC_RECODE_BYTES: transmitted nc-recombined traffic bytes
972 BATADV_CNT_NC_RECODE_BYTES,
975 * @BATADV_CNT_NC_BUFFER: counter for packets buffered for later nc
978 BATADV_CNT_NC_BUFFER,
981 * @BATADV_CNT_NC_DECODE: received and nc-decoded traffic packet counter
983 BATADV_CNT_NC_DECODE,
986 * @BATADV_CNT_NC_DECODE_BYTES: received and nc-decoded traffic bytes
989 BATADV_CNT_NC_DECODE_BYTES,
992 * @BATADV_CNT_NC_DECODE_FAILED: received and decode-failed traffic
995 BATADV_CNT_NC_DECODE_FAILED,
998 * @BATADV_CNT_NC_SNIFFED: counter for nc-decoded packets received in
1001 BATADV_CNT_NC_SNIFFED,
1004 /** @BATADV_CNT_NUM: number of traffic counters */
1009 * struct batadv_priv_tt - per mesh interface translation table data
1011 struct batadv_priv_tt {
1012 /** @vn: translation table version number */
1016 * @ogm_append_cnt: counter of number of OGMs containing the local tt
1019 atomic_t ogm_append_cnt;
1021 /** @local_changes: changes registered in an originator interval */
1022 size_t local_changes;
1025 * @changes_list: tracks tt local changes within an originator interval
1027 struct list_head changes_list;
1029 /** @local_hash: local translation table hash table */
1030 struct batadv_hashtable *local_hash;
1032 /** @global_hash: global translation table hash table */
1033 struct batadv_hashtable *global_hash;
1035 /** @req_list: list of pending & unanswered tt_requests */
1036 struct hlist_head req_list;
1039 * @roam_list: list of the last roaming events of each client limiting
1040 * the number of roaming events to avoid route flapping
1042 struct list_head roam_list;
1044 /** @changes_list_lock: lock protecting changes_list & local_changes */
1045 spinlock_t changes_list_lock;
1047 /** @req_list_lock: lock protecting req_list */
1048 spinlock_t req_list_lock;
1050 /** @roam_list_lock: lock protecting roam_list */
1051 spinlock_t roam_list_lock;
1053 /** @last_changeset: last tt changeset this host has generated */
1054 unsigned char *last_changeset;
1057 * @last_changeset_len: length of last tt changeset this host has
1060 s16 last_changeset_len;
1063 * @last_changeset_lock: lock protecting last_changeset &
1064 * last_changeset_len
1066 spinlock_t last_changeset_lock;
1069 * @commit_lock: prevents from executing a local TT commit while reading
1070 * the local table. The local TT commit is made up of two operations
1071 * (data structure update and metadata -CRC/TTVN- recalculation) and
1072 * they have to be executed atomically in order to avoid another thread
1073 * to read the table/metadata between those.
1075 spinlock_t commit_lock;
1077 /** @work: work queue callback item for translation table purging */
1078 struct delayed_work work;
1081 #ifdef CONFIG_BATMAN_ADV_BLA
1084 * struct batadv_priv_bla - per mesh interface bridge loop avoidance data
1086 struct batadv_priv_bla {
1087 /** @num_requests: number of bla requests in flight */
1088 atomic_t num_requests;
1091 * @claim_hash: hash table containing mesh nodes this host has claimed
1093 struct batadv_hashtable *claim_hash;
1096 * @backbone_hash: hash table containing all detected backbone gateways
1098 struct batadv_hashtable *backbone_hash;
1100 /** @loopdetect_addr: MAC address used for own loopdetection frames */
1101 u8 loopdetect_addr[ETH_ALEN];
1104 * @loopdetect_lasttime: time when the loopdetection frames were sent
1106 unsigned long loopdetect_lasttime;
1109 * @loopdetect_next: how many periods to wait for the next loopdetect
1112 atomic_t loopdetect_next;
1115 * @bcast_duplist: recently received broadcast packets array (for
1116 * broadcast duplicate suppression)
1118 struct batadv_bcast_duplist_entry bcast_duplist[BATADV_DUPLIST_SIZE];
1121 * @bcast_duplist_curr: index of last broadcast packet added to
1124 int bcast_duplist_curr;
1127 * @bcast_duplist_lock: lock protecting bcast_duplist &
1128 * bcast_duplist_curr
1130 spinlock_t bcast_duplist_lock;
1132 /** @claim_dest: local claim data (e.g. claim group) */
1133 struct batadv_bla_claim_dst claim_dest;
1135 /** @work: work queue callback item for cleanups & bla announcements */
1136 struct delayed_work work;
1140 #ifdef CONFIG_BATMAN_ADV_DEBUG
1143 * struct batadv_priv_debug_log - debug logging data
1145 struct batadv_priv_debug_log {
1146 /** @log_buff: buffer holding the logs (ring buffer) */
1147 char log_buff[BATADV_LOG_BUF_LEN];
1149 /** @log_start: index of next character to read */
1150 unsigned long log_start;
1152 /** @log_end: index of next character to write */
1153 unsigned long log_end;
1155 /** @lock: lock protecting log_buff, log_start & log_end */
1158 /** @queue_wait: log reader's wait queue */
1159 wait_queue_head_t queue_wait;
1164 * struct batadv_priv_gw - per mesh interface gateway data
1166 struct batadv_priv_gw {
1167 /** @gateway_list: list of available gateway nodes */
1168 struct hlist_head gateway_list;
1170 /** @list_lock: lock protecting gateway_list, curr_gw, generation */
1171 spinlock_t list_lock;
1173 /** @curr_gw: pointer to currently selected gateway node */
1174 struct batadv_gw_node __rcu *curr_gw;
1176 /** @generation: current (generation) sequence number */
1177 unsigned int generation;
1180 * @mode: gateway operation: off, client or server (see batadv_gw_modes)
1184 /** @sel_class: gateway selection class (applies if gw_mode client) */
1188 * @bandwidth_down: advertised uplink download bandwidth (if gw_mode
1191 atomic_t bandwidth_down;
1194 * @bandwidth_up: advertised uplink upload bandwidth (if gw_mode server)
1196 atomic_t bandwidth_up;
1198 /** @reselect: bool indicating a gateway re-selection is in progress */
1203 * struct batadv_priv_tvlv - per mesh interface tvlv data
1205 struct batadv_priv_tvlv {
1207 * @container_list: list of registered tvlv containers to be sent with
1210 struct hlist_head container_list;
1212 /** @handler_list: list of the various tvlv content handlers */
1213 struct hlist_head handler_list;
1215 /** @container_list_lock: protects tvlv container list access */
1216 spinlock_t container_list_lock;
1218 /** @handler_list_lock: protects handler list access */
1219 spinlock_t handler_list_lock;
1222 #ifdef CONFIG_BATMAN_ADV_DAT
1225 * struct batadv_priv_dat - per mesh interface DAT private data
1227 struct batadv_priv_dat {
1228 /** @addr: node DAT address */
1229 batadv_dat_addr_t addr;
1231 /** @hash: hashtable representing the local ARP cache */
1232 struct batadv_hashtable *hash;
1234 /** @work: work queue callback item for cache purging */
1235 struct delayed_work work;
1239 #ifdef CONFIG_BATMAN_ADV_MCAST
1241 * struct batadv_mcast_querier_state - IGMP/MLD querier state when bridged
1243 struct batadv_mcast_querier_state {
1244 /** @exists: whether a querier exists in the mesh */
1245 unsigned char exists:1;
1248 * @shadowing: if a querier exists, whether it is potentially shadowing
1249 * multicast listeners (i.e. querier is behind our own bridge segment)
1251 unsigned char shadowing:1;
1255 * struct batadv_mcast_mla_flags - flags for the querier, bridge and tvlv state
1257 struct batadv_mcast_mla_flags {
1258 /** @querier_ipv4: the current state of an IGMP querier in the mesh */
1259 struct batadv_mcast_querier_state querier_ipv4;
1261 /** @querier_ipv6: the current state of an MLD querier in the mesh */
1262 struct batadv_mcast_querier_state querier_ipv6;
1264 /** @enabled: whether the multicast tvlv is currently enabled */
1265 unsigned char enabled:1;
1267 /** @bridged: whether the soft interface has a bridge on top */
1268 unsigned char bridged:1;
1270 /** @tvlv_flags: the flags we have last sent in our mcast tvlv */
1275 * struct batadv_priv_mcast - per mesh interface mcast data
1277 struct batadv_priv_mcast {
1279 * @mla_list: list of multicast addresses we are currently announcing
1282 struct hlist_head mla_list; /* see __batadv_mcast_mla_update() */
1285 * @want_all_unsnoopables_list: a list of orig_nodes wanting all
1286 * unsnoopable multicast traffic
1288 struct hlist_head want_all_unsnoopables_list;
1291 * @want_all_ipv4_list: a list of orig_nodes wanting all IPv4 multicast
1294 struct hlist_head want_all_ipv4_list;
1297 * @want_all_ipv6_list: a list of orig_nodes wanting all IPv6 multicast
1300 struct hlist_head want_all_ipv6_list;
1303 * @want_all_rtr4_list: a list of orig_nodes wanting all routable IPv4
1306 struct hlist_head want_all_rtr4_list;
1309 * @want_all_rtr6_list: a list of orig_nodes wanting all routable IPv6
1312 struct hlist_head want_all_rtr6_list;
1315 * @mla_flags: flags for the querier, bridge and tvlv state
1317 struct batadv_mcast_mla_flags mla_flags;
1320 * @mla_lock: a lock protecting mla_list and mla_flags
1322 spinlock_t mla_lock;
1325 * @num_want_all_unsnoopables: number of nodes wanting unsnoopable IP
1328 atomic_t num_want_all_unsnoopables;
1330 /** @num_want_all_ipv4: counter for items in want_all_ipv4_list */
1331 atomic_t num_want_all_ipv4;
1333 /** @num_want_all_ipv6: counter for items in want_all_ipv6_list */
1334 atomic_t num_want_all_ipv6;
1336 /** @num_want_all_rtr4: counter for items in want_all_rtr4_list */
1337 atomic_t num_want_all_rtr4;
1339 /** @num_want_all_rtr6: counter for items in want_all_rtr6_list */
1340 atomic_t num_want_all_rtr6;
1343 * @num_no_mc_ptype_capa: counter for number of nodes without the
1344 * BATADV_MCAST_HAVE_MC_PTYPE_CAPA flag
1346 atomic_t num_no_mc_ptype_capa;
1349 * @want_lists_lock: lock for protecting modifications to mcasts
1350 * want_all_{unsnoopables,ipv4,ipv6}_list (traversals are rcu-locked)
1352 spinlock_t want_lists_lock;
1354 /** @work: work queue callback item for multicast TT and TVLV updates */
1355 struct delayed_work work;
1360 * struct batadv_priv_nc - per mesh interface network coding private data
1362 struct batadv_priv_nc {
1363 /** @work: work queue callback item for cleanup */
1364 struct delayed_work work;
1367 * @min_tq: only consider neighbors for encoding if neigh_tq > min_tq
1372 * @max_fwd_delay: maximum packet forward delay to allow coding of
1378 * @max_buffer_time: buffer time for sniffed packets used to decoding
1380 u32 max_buffer_time;
1383 * @timestamp_fwd_flush: timestamp of last forward packet queue flush
1385 unsigned long timestamp_fwd_flush;
1388 * @timestamp_sniffed_purge: timestamp of last sniffed packet queue
1391 unsigned long timestamp_sniffed_purge;
1394 * @coding_hash: Hash table used to buffer skbs while waiting for
1395 * another incoming skb to code it with. Skbs are added to the buffer
1396 * just before being forwarded in routing.c
1398 struct batadv_hashtable *coding_hash;
1401 * @decoding_hash: Hash table used to buffer skbs that might be needed
1402 * to decode a received coded skb. The buffer is used for 1) skbs
1403 * arriving on the soft-interface; 2) skbs overheard on the
1404 * hard-interface; and 3) skbs forwarded by batman-adv.
1406 struct batadv_hashtable *decoding_hash;
1410 * struct batadv_tp_unacked - unacked packet meta-information
1412 * This struct is supposed to represent a buffer unacked packet. However, since
1413 * the purpose of the TP meter is to count the traffic only, there is no need to
1414 * store the entire sk_buff, the starting offset and the length are enough
1416 struct batadv_tp_unacked {
1417 /** @seqno: seqno of the unacked packet */
1420 /** @len: length of the packet */
1423 /** @list: list node for &batadv_tp_vars.unacked_list */
1424 struct list_head list;
1428 * enum batadv_tp_meter_role - Modus in tp meter session
1430 enum batadv_tp_meter_role {
1431 /** @BATADV_TP_RECEIVER: Initialized as receiver */
1434 /** @BATADV_TP_SENDER: Initialized as sender */
1439 * struct batadv_tp_vars - tp meter private variables per session
1441 struct batadv_tp_vars {
1442 /** @list: list node for &bat_priv.tp_list */
1443 struct hlist_node list;
1445 /** @timer: timer for ack (receiver) and retry (sender) */
1446 struct timer_list timer;
1448 /** @bat_priv: pointer to the mesh object */
1449 struct batadv_priv *bat_priv;
1451 /** @start_time: start time in jiffies */
1452 unsigned long start_time;
1454 /** @other_end: mac address of remote */
1455 u8 other_end[ETH_ALEN];
1457 /** @role: receiver/sender modi */
1458 enum batadv_tp_meter_role role;
1460 /** @sending: sending binary semaphore: 1 if sending, 0 is not */
1463 /** @reason: reason for a stopped session */
1464 enum batadv_tp_meter_reason reason;
1466 /** @finish_work: work item for the finishing procedure */
1467 struct delayed_work finish_work;
1469 /** @test_length: test length in milliseconds */
1472 /** @session: TP session identifier */
1475 /** @icmp_uid: local ICMP "socket" index */
1478 /* sender variables */
1480 /** @dec_cwnd: decimal part of the cwnd used during linear growth */
1483 /** @cwnd: current size of the congestion window */
1486 /** @cwnd_lock: lock do protect @cwnd & @dec_cwnd */
1487 spinlock_t cwnd_lock;
1490 * @ss_threshold: Slow Start threshold. Once cwnd exceeds this value the
1491 * connection switches to the Congestion Avoidance state
1495 /** @last_acked: last acked byte */
1496 atomic_t last_acked;
1498 /** @last_sent: last sent byte, not yet acked */
1501 /** @tot_sent: amount of data sent/ACKed so far */
1502 atomic64_t tot_sent;
1504 /** @dup_acks: duplicate ACKs counter */
1507 /** @fast_recovery: true if in Fast Recovery mode */
1508 unsigned char fast_recovery:1;
1510 /** @recover: last sent seqno when entering Fast Recovery */
1513 /** @rto: sender timeout */
1516 /** @srtt: smoothed RTT scaled by 2^3 */
1519 /** @rttvar: RTT variation scaled by 2^2 */
1523 * @more_bytes: waiting queue anchor when waiting for more ack/retry
1526 wait_queue_head_t more_bytes;
1528 /** @prerandom_offset: offset inside the prerandom buffer */
1529 u32 prerandom_offset;
1531 /** @prerandom_lock: spinlock protecting access to prerandom_offset */
1532 spinlock_t prerandom_lock;
1534 /* receiver variables */
1536 /** @last_recv: last in-order received packet */
1539 /** @unacked_list: list of unacked packets (meta-info only) */
1540 struct list_head unacked_list;
1542 /** @unacked_lock: protect unacked_list */
1543 spinlock_t unacked_lock;
1545 /** @last_recv_time: time (jiffies) a msg was received */
1546 unsigned long last_recv_time;
1548 /** @refcount: number of context where the object is used */
1549 struct kref refcount;
1551 /** @rcu: struct used for freeing in an RCU-safe manner */
1552 struct rcu_head rcu;
1556 * struct batadv_softif_vlan - per VLAN attributes set
1558 struct batadv_softif_vlan {
1559 /** @bat_priv: pointer to the mesh object */
1560 struct batadv_priv *bat_priv;
1562 /** @vid: VLAN identifier */
1565 /** @ap_isolation: AP isolation state */
1566 atomic_t ap_isolation; /* boolean */
1568 /** @tt: TT private attributes (VLAN specific) */
1569 struct batadv_vlan_tt tt;
1571 /** @list: list node for &bat_priv.softif_vlan_list */
1572 struct hlist_node list;
1575 * @refcount: number of context where this object is currently in use
1577 struct kref refcount;
1579 /** @rcu: struct used for freeing in a RCU-safe manner */
1580 struct rcu_head rcu;
1584 * struct batadv_priv_bat_v - B.A.T.M.A.N. V per soft-interface private data
1586 struct batadv_priv_bat_v {
1587 /** @ogm_buff: buffer holding the OGM packet */
1588 unsigned char *ogm_buff;
1590 /** @ogm_buff_len: length of the OGM packet buffer */
1593 /** @ogm_seqno: OGM sequence number - used to identify each OGM */
1596 /** @ogm_buff_mutex: lock protecting ogm_buff and ogm_buff_len */
1597 struct mutex ogm_buff_mutex;
1599 /** @ogm_wq: workqueue used to schedule OGM transmissions */
1600 struct delayed_work ogm_wq;
1604 * struct batadv_priv - per mesh interface data
1606 struct batadv_priv {
1608 * @mesh_state: current status of the mesh
1609 * (inactive/active/deactivating)
1611 atomic_t mesh_state;
1613 /** @soft_iface: net device which holds this struct as private data */
1614 struct net_device *soft_iface;
1617 * @mtu_set_by_user: MTU was set once by user
1618 * protected by rtnl_lock
1620 int mtu_set_by_user;
1623 * @bat_counters: mesh internal traffic statistic counters (see
1626 u64 __percpu *bat_counters; /* Per cpu counters */
1629 * @aggregated_ogms: bool indicating whether OGM aggregation is enabled
1631 atomic_t aggregated_ogms;
1633 /** @bonding: bool indicating whether traffic bonding is enabled */
1637 * @fragmentation: bool indicating whether traffic fragmentation is
1640 atomic_t fragmentation;
1643 * @packet_size_max: max packet size that can be transmitted via
1644 * multiple fragmented skbs or a single frame if fragmentation is
1647 atomic_t packet_size_max;
1650 * @frag_seqno: incremental counter to identify chains of egress
1653 atomic_t frag_seqno;
1655 #ifdef CONFIG_BATMAN_ADV_BLA
1657 * @bridge_loop_avoidance: bool indicating whether bridge loop
1658 * avoidance is enabled
1660 atomic_t bridge_loop_avoidance;
1663 #ifdef CONFIG_BATMAN_ADV_DAT
1665 * @distributed_arp_table: bool indicating whether distributed ARP table
1668 atomic_t distributed_arp_table;
1671 #ifdef CONFIG_BATMAN_ADV_MCAST
1673 * @multicast_mode: Enable or disable multicast optimizations on this
1674 * node's sender/originating side
1676 atomic_t multicast_mode;
1679 * @multicast_fanout: Maximum number of packet copies to generate for a
1680 * multicast-to-unicast conversion
1682 atomic_t multicast_fanout;
1685 /** @orig_interval: OGM broadcast interval in milliseconds */
1686 atomic_t orig_interval;
1689 * @hop_penalty: penalty which will be applied to an OGM's tq-field on
1692 atomic_t hop_penalty;
1694 #ifdef CONFIG_BATMAN_ADV_DEBUG
1695 /** @log_level: configured log level (see batadv_dbg_level) */
1700 * @isolation_mark: the skb->mark value used to match packets for AP
1706 * @isolation_mark_mask: bitmask identifying the bits in skb->mark to be
1707 * used for the isolation mark
1709 u32 isolation_mark_mask;
1711 /** @bcast_seqno: last sent broadcast packet sequence number */
1712 atomic_t bcast_seqno;
1715 * @bcast_queue_left: number of remaining buffered broadcast packet
1718 atomic_t bcast_queue_left;
1720 /** @batman_queue_left: number of remaining OGM packet slots */
1721 atomic_t batman_queue_left;
1723 /** @forw_bat_list: list of aggregated OGMs that will be forwarded */
1724 struct hlist_head forw_bat_list;
1727 * @forw_bcast_list: list of broadcast packets that will be
1730 struct hlist_head forw_bcast_list;
1732 /** @tp_list: list of tp sessions */
1733 struct hlist_head tp_list;
1735 /** @orig_hash: hash table containing mesh participants (orig nodes) */
1736 struct batadv_hashtable *orig_hash;
1738 /** @forw_bat_list_lock: lock protecting forw_bat_list */
1739 spinlock_t forw_bat_list_lock;
1741 /** @forw_bcast_list_lock: lock protecting forw_bcast_list */
1742 spinlock_t forw_bcast_list_lock;
1744 /** @tp_list_lock: spinlock protecting @tp_list */
1745 spinlock_t tp_list_lock;
1747 /** @tp_num: number of currently active tp sessions */
1750 /** @orig_work: work queue callback item for orig node purging */
1751 struct delayed_work orig_work;
1754 * @primary_if: one of the hard-interfaces assigned to this mesh
1755 * interface becomes the primary interface
1757 struct batadv_hard_iface __rcu *primary_if; /* rcu protected pointer */
1759 /** @algo_ops: routing algorithm used by this mesh interface */
1760 struct batadv_algo_ops *algo_ops;
1763 * @softif_vlan_list: a list of softif_vlan structs, one per VLAN
1764 * created on top of the mesh interface represented by this object
1766 struct hlist_head softif_vlan_list;
1768 /** @softif_vlan_list_lock: lock protecting softif_vlan_list */
1769 spinlock_t softif_vlan_list_lock;
1771 #ifdef CONFIG_BATMAN_ADV_BLA
1772 /** @bla: bridge loop avoidance data */
1773 struct batadv_priv_bla bla;
1776 #ifdef CONFIG_BATMAN_ADV_DEBUG
1777 /** @debug_log: holding debug logging relevant data */
1778 struct batadv_priv_debug_log *debug_log;
1781 /** @gw: gateway data */
1782 struct batadv_priv_gw gw;
1784 /** @tt: translation table data */
1785 struct batadv_priv_tt tt;
1787 /** @tvlv: type-version-length-value data */
1788 struct batadv_priv_tvlv tvlv;
1790 #ifdef CONFIG_BATMAN_ADV_DAT
1791 /** @dat: distributed arp table data */
1792 struct batadv_priv_dat dat;
1795 #ifdef CONFIG_BATMAN_ADV_MCAST
1796 /** @mcast: multicast data */
1797 struct batadv_priv_mcast mcast;
1800 #ifdef CONFIG_BATMAN_ADV_NC
1802 * @network_coding: bool indicating whether network coding is enabled
1804 atomic_t network_coding;
1806 /** @nc: network coding data */
1807 struct batadv_priv_nc nc;
1808 #endif /* CONFIG_BATMAN_ADV_NC */
1810 #ifdef CONFIG_BATMAN_ADV_BATMAN_V
1811 /** @bat_v: B.A.T.M.A.N. V per soft-interface private data */
1812 struct batadv_priv_bat_v bat_v;
1816 #ifdef CONFIG_BATMAN_ADV_BLA
1819 * struct batadv_bla_backbone_gw - batman-adv gateway bridged into the LAN
1821 struct batadv_bla_backbone_gw {
1823 * @orig: originator address of backbone node (mac address of primary
1828 /** @vid: vlan id this gateway was detected on */
1831 /** @hash_entry: hlist node for &batadv_priv_bla.backbone_hash */
1832 struct hlist_node hash_entry;
1834 /** @bat_priv: pointer to soft_iface this backbone gateway belongs to */
1835 struct batadv_priv *bat_priv;
1837 /** @lasttime: last time we heard of this backbone gw */
1838 unsigned long lasttime;
1841 * @wait_periods: grace time for bridge forward delays and bla group
1842 * forming at bootup phase - no bcast traffic is formwared until it has
1845 atomic_t wait_periods;
1848 * @request_sent: if this bool is set to true we are out of sync with
1849 * this backbone gateway - no bcast traffic is formwared until the
1850 * situation was resolved
1852 atomic_t request_sent;
1854 /** @crc: crc16 checksum over all claims */
1857 /** @crc_lock: lock protecting crc */
1858 spinlock_t crc_lock;
1860 /** @report_work: work struct for reporting detected loops */
1861 struct work_struct report_work;
1863 /** @refcount: number of contexts the object is used */
1864 struct kref refcount;
1866 /** @rcu: struct used for freeing in an RCU-safe manner */
1867 struct rcu_head rcu;
1871 * struct batadv_bla_claim - claimed non-mesh client structure
1873 struct batadv_bla_claim {
1874 /** @addr: mac address of claimed non-mesh client */
1877 /** @vid: vlan id this client was detected on */
1880 /** @backbone_gw: pointer to backbone gw claiming this client */
1881 struct batadv_bla_backbone_gw *backbone_gw;
1883 /** @backbone_lock: lock protecting backbone_gw pointer */
1884 spinlock_t backbone_lock;
1886 /** @lasttime: last time we heard of claim (locals only) */
1887 unsigned long lasttime;
1889 /** @hash_entry: hlist node for &batadv_priv_bla.claim_hash */
1890 struct hlist_node hash_entry;
1892 /** @refcount: number of contexts the object is used */
1893 struct rcu_head rcu;
1895 /** @rcu: struct used for freeing in an RCU-safe manner */
1896 struct kref refcount;
1901 * struct batadv_tt_common_entry - tt local & tt global common data
1903 struct batadv_tt_common_entry {
1904 /** @addr: mac address of non-mesh client */
1907 /** @vid: VLAN identifier */
1911 * @hash_entry: hlist node for &batadv_priv_tt.local_hash or for
1912 * &batadv_priv_tt.global_hash
1914 struct hlist_node hash_entry;
1916 /** @flags: various state handling flags (see batadv_tt_client_flags) */
1919 /** @added_at: timestamp used for purging stale tt common entries */
1920 unsigned long added_at;
1922 /** @refcount: number of contexts the object is used */
1923 struct kref refcount;
1925 /** @rcu: struct used for freeing in an RCU-safe manner */
1926 struct rcu_head rcu;
1930 * struct batadv_tt_local_entry - translation table local entry data
1932 struct batadv_tt_local_entry {
1933 /** @common: general translation table data */
1934 struct batadv_tt_common_entry common;
1936 /** @last_seen: timestamp used for purging stale tt local entries */
1937 unsigned long last_seen;
1939 /** @vlan: soft-interface vlan of the entry */
1940 struct batadv_softif_vlan *vlan;
1944 * struct batadv_tt_global_entry - translation table global entry data
1946 struct batadv_tt_global_entry {
1947 /** @common: general translation table data */
1948 struct batadv_tt_common_entry common;
1950 /** @orig_list: list of orig nodes announcing this non-mesh client */
1951 struct hlist_head orig_list;
1953 /** @orig_list_count: number of items in the orig_list */
1954 atomic_t orig_list_count;
1956 /** @list_lock: lock protecting orig_list */
1957 spinlock_t list_lock;
1959 /** @roam_at: time at which TT_GLOBAL_ROAM was set */
1960 unsigned long roam_at;
1964 * struct batadv_tt_orig_list_entry - orig node announcing a non-mesh client
1966 struct batadv_tt_orig_list_entry {
1967 /** @orig_node: pointer to orig node announcing this non-mesh client */
1968 struct batadv_orig_node *orig_node;
1971 * @ttvn: translation table version number which added the non-mesh
1976 /** @flags: per orig entry TT sync flags */
1979 /** @list: list node for &batadv_tt_global_entry.orig_list */
1980 struct hlist_node list;
1982 /** @refcount: number of contexts the object is used */
1983 struct kref refcount;
1985 /** @rcu: struct used for freeing in an RCU-safe manner */
1986 struct rcu_head rcu;
1990 * struct batadv_tt_change_node - structure for tt changes occurred
1992 struct batadv_tt_change_node {
1993 /** @list: list node for &batadv_priv_tt.changes_list */
1994 struct list_head list;
1996 /** @change: holds the actual translation table diff data */
1997 struct batadv_tvlv_tt_change change;
2001 * struct batadv_tt_req_node - data to keep track of the tt requests in flight
2003 struct batadv_tt_req_node {
2005 * @addr: mac address of the originator this request was sent to
2009 /** @issued_at: timestamp used for purging stale tt requests */
2010 unsigned long issued_at;
2012 /** @refcount: number of contexts the object is used by */
2013 struct kref refcount;
2015 /** @list: list node for &batadv_priv_tt.req_list */
2016 struct hlist_node list;
2020 * struct batadv_tt_roam_node - roaming client data
2022 struct batadv_tt_roam_node {
2023 /** @addr: mac address of the client in the roaming phase */
2027 * @counter: number of allowed roaming events per client within a single
2028 * OGM interval (changes are committed with each OGM)
2033 * @first_time: timestamp used for purging stale roaming node entries
2035 unsigned long first_time;
2037 /** @list: list node for &batadv_priv_tt.roam_list */
2038 struct list_head list;
2042 * struct batadv_nc_node - network coding node
2044 struct batadv_nc_node {
2045 /** @list: next and prev pointer for the list handling */
2046 struct list_head list;
2048 /** @addr: the node's mac address */
2051 /** @refcount: number of contexts the object is used by */
2052 struct kref refcount;
2054 /** @rcu: struct used for freeing in an RCU-safe manner */
2055 struct rcu_head rcu;
2057 /** @orig_node: pointer to corresponding orig node struct */
2058 struct batadv_orig_node *orig_node;
2060 /** @last_seen: timestamp of last ogm received from this node */
2061 unsigned long last_seen;
2065 * struct batadv_nc_path - network coding path
2067 struct batadv_nc_path {
2068 /** @hash_entry: next and prev pointer for the list handling */
2069 struct hlist_node hash_entry;
2071 /** @rcu: struct used for freeing in an RCU-safe manner */
2072 struct rcu_head rcu;
2074 /** @refcount: number of contexts the object is used by */
2075 struct kref refcount;
2077 /** @packet_list: list of buffered packets for this path */
2078 struct list_head packet_list;
2080 /** @packet_list_lock: access lock for packet list */
2081 spinlock_t packet_list_lock;
2083 /** @next_hop: next hop (destination) of path */
2084 u8 next_hop[ETH_ALEN];
2086 /** @prev_hop: previous hop (source) of path */
2087 u8 prev_hop[ETH_ALEN];
2089 /** @last_valid: timestamp for last validation of path */
2090 unsigned long last_valid;
2094 * struct batadv_nc_packet - network coding packet used when coding and
2097 struct batadv_nc_packet {
2098 /** @list: next and prev pointer for the list handling */
2099 struct list_head list;
2101 /** @packet_id: crc32 checksum of skb data */
2105 * @timestamp: field containing the info when the packet was added to
2108 unsigned long timestamp;
2110 /** @neigh_node: pointer to original next hop neighbor of skb */
2111 struct batadv_neigh_node *neigh_node;
2113 /** @skb: skb which can be encoded or used for decoding */
2114 struct sk_buff *skb;
2116 /** @nc_path: pointer to path this nc packet is attached to */
2117 struct batadv_nc_path *nc_path;
2121 * struct batadv_skb_cb - control buffer structure used to store private data
2122 * relevant to batman-adv in the skb->cb buffer in skbs.
2124 struct batadv_skb_cb {
2126 * @decoded: Marks a skb as decoded, which is checked when searching for
2127 * coding opportunities in network-coding.c
2129 unsigned char decoded:1;
2131 /** @num_bcasts: Counter for broadcast packet retransmissions */
2132 unsigned char num_bcasts;
2136 * struct batadv_forw_packet - structure for bcast packets to be sent/forwarded
2138 struct batadv_forw_packet {
2140 * @list: list node for &batadv_priv.forw.bcast_list and
2141 * &batadv_priv.forw.bat_list
2143 struct hlist_node list;
2145 /** @cleanup_list: list node for purging functions */
2146 struct hlist_node cleanup_list;
2148 /** @send_time: execution time for delayed_work (packet sending) */
2149 unsigned long send_time;
2152 * @own: bool for locally generated packets (local OGMs are re-scheduled
2157 /** @skb: bcast packet's skb buffer */
2158 struct sk_buff *skb;
2160 /** @packet_len: size of aggregated OGM packet inside the skb buffer */
2163 /** @direct_link_flags: direct link flags for aggregated OGM packets */
2164 u32 direct_link_flags;
2166 /** @num_packets: counter for aggregated OGMv1 packets */
2169 /** @delayed_work: work queue callback item for packet sending */
2170 struct delayed_work delayed_work;
2173 * @if_incoming: pointer to incoming hard-iface or primary iface if
2174 * locally generated packet
2176 struct batadv_hard_iface *if_incoming;
2179 * @if_outgoing: packet where the packet should be sent to, or NULL if
2182 struct batadv_hard_iface *if_outgoing;
2184 /** @queue_left: The queue (counter) this packet was applied to */
2185 atomic_t *queue_left;
2189 * struct batadv_algo_iface_ops - mesh algorithm callbacks (interface specific)
2191 struct batadv_algo_iface_ops {
2193 * @activate: start routing mechanisms when hard-interface is brought up
2196 void (*activate)(struct batadv_hard_iface *hard_iface);
2198 /** @enable: init routing info when hard-interface is enabled */
2199 int (*enable)(struct batadv_hard_iface *hard_iface);
2201 /** @enabled: notification when hard-interface was enabled (optional) */
2202 void (*enabled)(struct batadv_hard_iface *hard_iface);
2204 /** @disable: de-init routing info when hard-interface is disabled */
2205 void (*disable)(struct batadv_hard_iface *hard_iface);
2208 * @update_mac: (re-)init mac addresses of the protocol information
2209 * belonging to this hard-interface
2211 void (*update_mac)(struct batadv_hard_iface *hard_iface);
2213 /** @primary_set: called when primary interface is selected / changed */
2214 void (*primary_set)(struct batadv_hard_iface *hard_iface);
2218 * struct batadv_algo_neigh_ops - mesh algorithm callbacks (neighbour specific)
2220 struct batadv_algo_neigh_ops {
2221 /** @hardif_init: called on creation of single hop entry (optional) */
2222 void (*hardif_init)(struct batadv_hardif_neigh_node *neigh);
2225 * @cmp: compare the metrics of two neighbors for their respective
2226 * outgoing interfaces
2228 int (*cmp)(struct batadv_neigh_node *neigh1,
2229 struct batadv_hard_iface *if_outgoing1,
2230 struct batadv_neigh_node *neigh2,
2231 struct batadv_hard_iface *if_outgoing2);
2234 * @is_similar_or_better: check if neigh1 is equally similar or better
2235 * than neigh2 for their respective outgoing interface from the metric
2238 bool (*is_similar_or_better)(struct batadv_neigh_node *neigh1,
2239 struct batadv_hard_iface *if_outgoing1,
2240 struct batadv_neigh_node *neigh2,
2241 struct batadv_hard_iface *if_outgoing2);
2243 /** @dump: dump neighbors to a netlink socket (optional) */
2244 void (*dump)(struct sk_buff *msg, struct netlink_callback *cb,
2245 struct batadv_priv *priv,
2246 struct batadv_hard_iface *hard_iface);
2250 * struct batadv_algo_orig_ops - mesh algorithm callbacks (originator specific)
2252 struct batadv_algo_orig_ops {
2253 /** @dump: dump originators to a netlink socket (optional) */
2254 void (*dump)(struct sk_buff *msg, struct netlink_callback *cb,
2255 struct batadv_priv *priv,
2256 struct batadv_hard_iface *hard_iface);
2260 * struct batadv_algo_gw_ops - mesh algorithm callbacks (GW specific)
2262 struct batadv_algo_gw_ops {
2263 /** @init_sel_class: initialize GW selection class (optional) */
2264 void (*init_sel_class)(struct batadv_priv *bat_priv);
2267 * @sel_class_max: maximum allowed GW selection class
2272 * @get_best_gw_node: select the best GW from the list of available
2275 struct batadv_gw_node *(*get_best_gw_node)
2276 (struct batadv_priv *bat_priv);
2279 * @is_eligible: check if a newly discovered GW is a potential candidate
2280 * for the election as best GW (optional)
2282 bool (*is_eligible)(struct batadv_priv *bat_priv,
2283 struct batadv_orig_node *curr_gw_orig,
2284 struct batadv_orig_node *orig_node);
2286 /** @dump: dump gateways to a netlink socket (optional) */
2287 void (*dump)(struct sk_buff *msg, struct netlink_callback *cb,
2288 struct batadv_priv *priv);
2292 * struct batadv_algo_ops - mesh algorithm callbacks
2294 struct batadv_algo_ops {
2295 /** @list: list node for the batadv_algo_list */
2296 struct hlist_node list;
2298 /** @name: name of the algorithm */
2301 /** @iface: callbacks related to interface handling */
2302 struct batadv_algo_iface_ops iface;
2304 /** @neigh: callbacks related to neighbors handling */
2305 struct batadv_algo_neigh_ops neigh;
2307 /** @orig: callbacks related to originators handling */
2308 struct batadv_algo_orig_ops orig;
2310 /** @gw: callbacks related to GW mode */
2311 struct batadv_algo_gw_ops gw;
2315 * struct batadv_dat_entry - it is a single entry of batman-adv ARP backend. It
2316 * is used to stored ARP entries needed for the global DAT cache
2318 struct batadv_dat_entry {
2319 /** @ip: the IPv4 corresponding to this DAT/ARP entry */
2322 /** @mac_addr: the MAC address associated to the stored IPv4 */
2323 u8 mac_addr[ETH_ALEN];
2325 /** @vid: the vlan ID associated to this entry */
2329 * @last_update: time in jiffies when this entry was refreshed last time
2331 unsigned long last_update;
2333 /** @hash_entry: hlist node for &batadv_priv_dat.hash */
2334 struct hlist_node hash_entry;
2336 /** @refcount: number of contexts the object is used */
2337 struct kref refcount;
2339 /** @rcu: struct used for freeing in an RCU-safe manner */
2340 struct rcu_head rcu;
2344 * struct batadv_hw_addr - a list entry for a MAC address
2346 struct batadv_hw_addr {
2347 /** @list: list node for the linking of entries */
2348 struct hlist_node list;
2350 /** @addr: the MAC address of this list entry */
2351 unsigned char addr[ETH_ALEN];
2355 * struct batadv_dat_candidate - candidate destination for DAT operations
2357 struct batadv_dat_candidate {
2359 * @type: the type of the selected candidate. It can one of the
2361 * - BATADV_DAT_CANDIDATE_NOT_FOUND
2362 * - BATADV_DAT_CANDIDATE_ORIG
2367 * @orig_node: if type is BATADV_DAT_CANDIDATE_ORIG this field points to
2368 * the corresponding originator node structure
2370 struct batadv_orig_node *orig_node;
2374 * struct batadv_tvlv_container - container for tvlv appended to OGMs
2376 struct batadv_tvlv_container {
2377 /** @list: hlist node for &batadv_priv_tvlv.container_list */
2378 struct hlist_node list;
2380 /** @tvlv_hdr: tvlv header information needed to construct the tvlv */
2381 struct batadv_tvlv_hdr tvlv_hdr;
2383 /** @refcount: number of contexts the object is used */
2384 struct kref refcount;
2388 * struct batadv_tvlv_handler - handler for specific tvlv type and version
2390 struct batadv_tvlv_handler {
2391 /** @list: hlist node for &batadv_priv_tvlv.handler_list */
2392 struct hlist_node list;
2395 * @ogm_handler: handler callback which is given the tvlv payload to
2396 * process on incoming OGM packets
2398 void (*ogm_handler)(struct batadv_priv *bat_priv,
2399 struct batadv_orig_node *orig,
2400 u8 flags, void *tvlv_value, u16 tvlv_value_len);
2403 * @unicast_handler: handler callback which is given the tvlv payload to
2404 * process on incoming unicast tvlv packets
2406 int (*unicast_handler)(struct batadv_priv *bat_priv,
2408 void *tvlv_value, u16 tvlv_value_len);
2411 * @mcast_handler: handler callback which is given the tvlv payload to
2412 * process on incoming mcast packet
2414 int (*mcast_handler)(struct batadv_priv *bat_priv, struct sk_buff *skb);
2416 /** @type: tvlv type this handler feels responsible for */
2419 /** @version: tvlv version this handler feels responsible for */
2422 /** @flags: tvlv handler flags */
2425 /** @refcount: number of contexts the object is used */
2426 struct kref refcount;
2428 /** @rcu: struct used for freeing in an RCU-safe manner */
2429 struct rcu_head rcu;
2433 * enum batadv_tvlv_handler_flags - tvlv handler flags definitions
2435 enum batadv_tvlv_handler_flags {
2437 * @BATADV_TVLV_HANDLER_OGM_CIFNOTFND: tvlv ogm processing function
2438 * will call this handler even if its type was not found (with no data)
2440 BATADV_TVLV_HANDLER_OGM_CIFNOTFND = BIT(1),
2443 * @BATADV_TVLV_HANDLER_OGM_CALLED: interval tvlv handling flag - the
2444 * API marks a handler as being called, so it won't be called if the
2445 * BATADV_TVLV_HANDLER_OGM_CIFNOTFND flag was set
2447 BATADV_TVLV_HANDLER_OGM_CALLED = BIT(2),
2450 #endif /* _NET_BATMAN_ADV_TYPES_H_ */