1 /* SPDX-License-Identifier: GPL-2.0 */
2 /* Copyright (C) 2007-2018 B.A.T.M.A.N. contributors:
4 * Marek Lindner, Simon Wunderlich
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of version 2 of the GNU General Public
8 * License as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, see <http://www.gnu.org/licenses/>.
19 #ifndef _NET_BATMAN_ADV_TYPES_H_
20 #define _NET_BATMAN_ADV_TYPES_H_
22 #ifndef _NET_BATMAN_ADV_MAIN_H_
23 #error only "main.h" can be included directly
26 #include <linux/average.h>
27 #include <linux/bitops.h>
28 #include <linux/compiler.h>
29 #include <linux/if_ether.h>
30 #include <linux/kref.h>
31 #include <linux/mutex.h>
32 #include <linux/netdevice.h>
33 #include <linux/netlink.h>
34 #include <linux/sched.h> /* for linux/wait.h */
35 #include <linux/spinlock.h>
36 #include <linux/types.h>
37 #include <linux/wait.h>
38 #include <linux/workqueue.h>
39 #include <uapi/linux/batadv_packet.h>
40 #include <uapi/linux/batman_adv.h>
44 #ifdef CONFIG_BATMAN_ADV_DAT
47 * typedef batadv_dat_addr_t - type used for all DHT addresses
49 * If it is changed, BATADV_DAT_ADDR_MAX is changed as well.
51 * *Please be careful: batadv_dat_addr_t must be UNSIGNED*
53 typedef u16 batadv_dat_addr_t;
55 #endif /* CONFIG_BATMAN_ADV_DAT */
58 * enum batadv_dhcp_recipient - dhcp destination
60 enum batadv_dhcp_recipient {
61 /** @BATADV_DHCP_NO: packet is not a dhcp message */
64 /** @BATADV_DHCP_TO_SERVER: dhcp message is directed to a server */
65 BATADV_DHCP_TO_SERVER,
67 /** @BATADV_DHCP_TO_CLIENT: dhcp message is directed to a client */
68 BATADV_DHCP_TO_CLIENT,
72 * BATADV_TT_REMOTE_MASK - bitmask selecting the flags that are sent over the
75 #define BATADV_TT_REMOTE_MASK 0x00FF
78 * BATADV_TT_SYNC_MASK - bitmask of the flags that need to be kept in sync
79 * among the nodes. These flags are used to compute the global/local CRC
81 #define BATADV_TT_SYNC_MASK 0x00F0
84 * struct batadv_hard_iface_bat_iv - per hard-interface B.A.T.M.A.N. IV data
86 struct batadv_hard_iface_bat_iv {
87 /** @ogm_buff: buffer holding the OGM packet */
88 unsigned char *ogm_buff;
90 /** @ogm_buff_len: length of the OGM packet buffer */
93 /** @ogm_seqno: OGM sequence number - used to identify each OGM */
96 /** @ogm_buff_mutex: lock protecting ogm_buff and ogm_buff_len */
97 struct mutex ogm_buff_mutex;
101 * enum batadv_v_hard_iface_flags - interface flags useful to B.A.T.M.A.N. V
103 enum batadv_v_hard_iface_flags {
105 * @BATADV_FULL_DUPLEX: tells if the connection over this link is
108 BATADV_FULL_DUPLEX = BIT(0),
111 * @BATADV_WARNING_DEFAULT: tells whether we have warned the user that
112 * no throughput data is available for this interface and that default
113 * values are assumed.
115 BATADV_WARNING_DEFAULT = BIT(1),
119 * struct batadv_hard_iface_bat_v - per hard-interface B.A.T.M.A.N. V data
121 struct batadv_hard_iface_bat_v {
122 /** @elp_interval: time interval between two ELP transmissions */
123 atomic_t elp_interval;
125 /** @elp_seqno: current ELP sequence number */
128 /** @elp_skb: base skb containing the ELP message to send */
129 struct sk_buff *elp_skb;
131 /** @elp_wq: workqueue used to schedule ELP transmissions */
132 struct delayed_work elp_wq;
135 * @throughput_override: throughput override to disable link
138 atomic_t throughput_override;
140 /** @flags: interface specific flags */
145 * enum batadv_hard_iface_wifi_flags - Flags describing the wifi configuration
146 * of a batadv_hard_iface
148 enum batadv_hard_iface_wifi_flags {
149 /** @BATADV_HARDIF_WIFI_WEXT_DIRECT: it is a wext wifi device */
150 BATADV_HARDIF_WIFI_WEXT_DIRECT = BIT(0),
152 /** @BATADV_HARDIF_WIFI_CFG80211_DIRECT: it is a cfg80211 wifi device */
153 BATADV_HARDIF_WIFI_CFG80211_DIRECT = BIT(1),
156 * @BATADV_HARDIF_WIFI_WEXT_INDIRECT: link device is a wext wifi device
158 BATADV_HARDIF_WIFI_WEXT_INDIRECT = BIT(2),
161 * @BATADV_HARDIF_WIFI_CFG80211_INDIRECT: link device is a cfg80211 wifi
164 BATADV_HARDIF_WIFI_CFG80211_INDIRECT = BIT(3),
168 * struct batadv_hard_iface - network device known to batman-adv
170 struct batadv_hard_iface {
171 /** @list: list node for batadv_hardif_list */
172 struct list_head list;
174 /** @if_num: identificator of the interface */
177 /** @if_status: status of the interface for batman-adv */
181 * @num_bcasts: number of payload re-broadcasts on this interface (ARQ)
186 * @wifi_flags: flags whether this is (directly or indirectly) a wifi
191 /** @net_dev: pointer to the net_device */
192 struct net_device *net_dev;
194 /** @hardif_obj: kobject of the per interface sysfs "mesh" directory */
195 struct kobject *hardif_obj;
197 /** @refcount: number of contexts the object is used */
198 struct kref refcount;
201 * @batman_adv_ptype: packet type describing packets that should be
202 * processed by batman-adv for this interface
204 struct packet_type batman_adv_ptype;
207 * @soft_iface: the batman-adv interface which uses this network
210 struct net_device *soft_iface;
212 /** @rcu: struct used for freeing in an RCU-safe manner */
215 /** @bat_iv: per hard-interface B.A.T.M.A.N. IV data */
216 struct batadv_hard_iface_bat_iv bat_iv;
218 #ifdef CONFIG_BATMAN_ADV_BATMAN_V
219 /** @bat_v: per hard-interface B.A.T.M.A.N. V data */
220 struct batadv_hard_iface_bat_v bat_v;
223 #ifdef CONFIG_BATMAN_ADV_DEBUGFS
225 * @debug_dir: dentry for nc subdir in batman-adv directory in debugfs
227 struct dentry *debug_dir;
231 * @neigh_list: list of unique single hop neighbors via this interface
233 struct hlist_head neigh_list;
235 /** @neigh_list_lock: lock protecting neigh_list */
236 spinlock_t neigh_list_lock;
240 * struct batadv_orig_ifinfo - originator info per outgoing interface
242 struct batadv_orig_ifinfo {
243 /** @list: list node for &batadv_orig_node.ifinfo_list */
244 struct hlist_node list;
246 /** @if_outgoing: pointer to outgoing hard-interface */
247 struct batadv_hard_iface *if_outgoing;
249 /** @router: router that should be used to reach this originator */
250 struct batadv_neigh_node __rcu *router;
252 /** @last_real_seqno: last and best known sequence number */
255 /** @last_ttl: ttl of last received packet */
258 /** @last_seqno_forwarded: seqno of the OGM which was forwarded last */
259 u32 last_seqno_forwarded;
261 /** @batman_seqno_reset: time when the batman seqno window was reset */
262 unsigned long batman_seqno_reset;
264 /** @refcount: number of contexts the object is used */
265 struct kref refcount;
267 /** @rcu: struct used for freeing in an RCU-safe manner */
272 * struct batadv_frag_table_entry - head in the fragment buffer table
274 struct batadv_frag_table_entry {
275 /** @fragment_list: head of list with fragments */
276 struct hlist_head fragment_list;
278 /** @lock: lock to protect the list of fragments */
281 /** @timestamp: time (jiffie) of last received fragment */
282 unsigned long timestamp;
284 /** @seqno: sequence number of the fragments in the list */
287 /** @size: accumulated size of packets in list */
290 /** @total_size: expected size of the assembled packet */
295 * struct batadv_frag_list_entry - entry in a list of fragments
297 struct batadv_frag_list_entry {
298 /** @list: list node information */
299 struct hlist_node list;
301 /** @skb: fragment */
304 /** @no: fragment number in the set */
309 * struct batadv_vlan_tt - VLAN specific TT attributes
311 struct batadv_vlan_tt {
312 /** @crc: CRC32 checksum of the entries belonging to this vlan */
315 /** @num_entries: number of TT entries for this VLAN */
316 atomic_t num_entries;
320 * struct batadv_orig_node_vlan - VLAN specific data per orig_node
322 struct batadv_orig_node_vlan {
323 /** @vid: the VLAN identifier */
326 /** @tt: VLAN specific TT attributes */
327 struct batadv_vlan_tt tt;
329 /** @list: list node for &batadv_orig_node.vlan_list */
330 struct hlist_node list;
333 * @refcount: number of context where this object is currently in use
335 struct kref refcount;
337 /** @rcu: struct used for freeing in a RCU-safe manner */
342 * struct batadv_orig_bat_iv - B.A.T.M.A.N. IV private orig_node members
344 struct batadv_orig_bat_iv {
346 * @bcast_own: set of bitfields (one per hard-interface) where each one
347 * counts the number of our OGMs this orig_node rebroadcasted "back" to
348 * us (relative to last_real_seqno). Every bitfield is
349 * BATADV_TQ_LOCAL_WINDOW_SIZE bits long.
351 unsigned long *bcast_own;
353 /** @bcast_own_sum: sum of bcast_own */
357 * @ogm_cnt_lock: lock protecting bcast_own, bcast_own_sum,
358 * neigh_node->bat_iv.real_bits & neigh_node->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 /** @capabilities: announced capabilities of this originator */
419 unsigned long capabilities;
422 * @capa_initialized: bitfield to remember whether a capability was
425 unsigned long capa_initialized;
427 /** @last_ttvn: last seen translation table version number */
430 /** @tt_buff: last tt changeset this node received from the orig node */
431 unsigned char *tt_buff;
434 * @tt_buff_len: length of the last tt changeset this node received
439 /** @tt_buff_lock: lock that protects tt_buff and tt_buff_len */
440 spinlock_t tt_buff_lock;
443 * @tt_lock: prevents from updating the table while reading it. Table
444 * update is made up by two operations (data structure update and
445 * metdata -CRC/TTVN-recalculation) and they have to be executed
446 * atomically in order to avoid another thread to read the
447 * table/metadata between those.
452 * @bcast_bits: bitfield containing the info which payload broadcast
453 * originated from this orig node this host already has seen (relative
454 * to last_bcast_seqno)
456 DECLARE_BITMAP(bcast_bits, BATADV_TQ_LOCAL_WINDOW_SIZE);
459 * @last_bcast_seqno: last broadcast sequence number received by this
462 u32 last_bcast_seqno;
465 * @neigh_list: list of potential next hop neighbor towards this orig
468 struct hlist_head neigh_list;
471 * @neigh_list_lock: lock protecting neigh_list, ifinfo_list,
472 * last_bonding_candidate and router
474 spinlock_t neigh_list_lock;
476 /** @hash_entry: hlist node for &batadv_priv.orig_hash */
477 struct hlist_node hash_entry;
479 /** @bat_priv: pointer to soft_iface this orig node belongs to */
480 struct batadv_priv *bat_priv;
482 /** @bcast_seqno_lock: lock protecting bcast_bits & last_bcast_seqno */
483 spinlock_t bcast_seqno_lock;
485 /** @refcount: number of contexts the object is used */
486 struct kref refcount;
488 /** @rcu: struct used for freeing in an RCU-safe manner */
491 #ifdef CONFIG_BATMAN_ADV_NC
492 /** @in_coding_list: list of nodes this orig can hear */
493 struct list_head in_coding_list;
495 /** @out_coding_list: list of nodes that can hear this orig */
496 struct list_head out_coding_list;
498 /** @in_coding_list_lock: protects in_coding_list */
499 spinlock_t in_coding_list_lock;
501 /** @out_coding_list_lock: protects out_coding_list */
502 spinlock_t out_coding_list_lock;
505 /** @fragments: array with heads for fragment chains */
506 struct batadv_frag_table_entry fragments[BATADV_FRAG_BUFFER_COUNT];
509 * @vlan_list: a list of orig_node_vlan structs, one per VLAN served by
510 * the originator represented by this object
512 struct hlist_head vlan_list;
514 /** @vlan_list_lock: lock protecting vlan_list */
515 spinlock_t vlan_list_lock;
517 /** @bat_iv: B.A.T.M.A.N. IV private structure */
518 struct batadv_orig_bat_iv bat_iv;
522 * enum batadv_orig_capabilities - orig node capabilities
524 enum batadv_orig_capabilities {
526 * @BATADV_ORIG_CAPA_HAS_DAT: orig node has distributed arp table
529 BATADV_ORIG_CAPA_HAS_DAT,
531 /** @BATADV_ORIG_CAPA_HAS_NC: orig node has network coding enabled */
532 BATADV_ORIG_CAPA_HAS_NC,
534 /** @BATADV_ORIG_CAPA_HAS_TT: orig node has tt capability */
535 BATADV_ORIG_CAPA_HAS_TT,
538 * @BATADV_ORIG_CAPA_HAS_MCAST: orig node has some multicast capability
539 * (= orig node announces a tvlv of type BATADV_TVLV_MCAST)
541 BATADV_ORIG_CAPA_HAS_MCAST,
545 * struct batadv_gw_node - structure for orig nodes announcing gw capabilities
547 struct batadv_gw_node {
548 /** @list: list node for &batadv_priv_gw.list */
549 struct hlist_node list;
551 /** @orig_node: pointer to corresponding orig node */
552 struct batadv_orig_node *orig_node;
554 /** @bandwidth_down: advertised uplink download bandwidth */
557 /** @bandwidth_up: advertised uplink upload bandwidth */
560 /** @refcount: number of contexts the object is used */
561 struct kref refcount;
563 /** @rcu: struct used for freeing in an RCU-safe manner */
567 DECLARE_EWMA(throughput, 10, 8)
570 * struct batadv_hardif_neigh_node_bat_v - B.A.T.M.A.N. V private neighbor
573 struct batadv_hardif_neigh_node_bat_v {
574 /** @throughput: ewma link throughput towards this neighbor */
575 struct ewma_throughput throughput;
577 /** @elp_interval: time interval between two ELP transmissions */
580 /** @elp_latest_seqno: latest and best known ELP sequence number */
581 u32 elp_latest_seqno;
584 * @last_unicast_tx: when the last unicast packet has been sent to this
587 unsigned long last_unicast_tx;
589 /** @metric_work: work queue callback item for metric update */
590 struct work_struct metric_work;
594 * struct batadv_hardif_neigh_node - unique neighbor per hard-interface
596 struct batadv_hardif_neigh_node {
597 /** @list: list node for &batadv_hard_iface.neigh_list */
598 struct hlist_node list;
600 /** @addr: the MAC address of the neighboring interface */
604 * @orig: the address of the originator this neighbor node belongs to
608 /** @if_incoming: pointer to incoming hard-interface */
609 struct batadv_hard_iface *if_incoming;
611 /** @last_seen: when last packet via this neighbor was received */
612 unsigned long last_seen;
614 #ifdef CONFIG_BATMAN_ADV_BATMAN_V
615 /** @bat_v: B.A.T.M.A.N. V private data */
616 struct batadv_hardif_neigh_node_bat_v bat_v;
619 /** @refcount: number of contexts the object is used */
620 struct kref refcount;
622 /** @rcu: struct used for freeing in a RCU-safe manner */
627 * struct batadv_neigh_node - structure for single hops neighbors
629 struct batadv_neigh_node {
630 /** @list: list node for &batadv_orig_node.neigh_list */
631 struct hlist_node list;
633 /** @orig_node: pointer to corresponding orig_node */
634 struct batadv_orig_node *orig_node;
636 /** @addr: the MAC address of the neighboring interface */
639 /** @ifinfo_list: list for routing metrics per outgoing interface */
640 struct hlist_head ifinfo_list;
642 /** @ifinfo_lock: lock protecting ifinfo_list and its members */
643 spinlock_t ifinfo_lock;
645 /** @if_incoming: pointer to incoming hard-interface */
646 struct batadv_hard_iface *if_incoming;
648 /** @last_seen: when last packet via this neighbor was received */
649 unsigned long last_seen;
651 /** @hardif_neigh: hardif_neigh of this neighbor */
652 struct batadv_hardif_neigh_node *hardif_neigh;
654 /** @refcount: number of contexts the object is used */
655 struct kref refcount;
657 /** @rcu: struct used for freeing in an RCU-safe manner */
662 * struct batadv_neigh_ifinfo_bat_iv - neighbor information per outgoing
663 * interface for B.A.T.M.A.N. IV
665 struct batadv_neigh_ifinfo_bat_iv {
666 /** @tq_recv: ring buffer of received TQ values from this neigh node */
667 u8 tq_recv[BATADV_TQ_GLOBAL_WINDOW_SIZE];
669 /** @tq_index: ring buffer index */
673 * @tq_avg: averaged tq of all tq values in the ring buffer (tq_recv)
678 * @real_bits: bitfield containing the number of OGMs received from this
679 * neigh node (relative to orig_node->last_real_seqno)
681 DECLARE_BITMAP(real_bits, BATADV_TQ_LOCAL_WINDOW_SIZE);
683 /** @real_packet_count: counted result of real_bits */
684 u8 real_packet_count;
688 * struct batadv_neigh_ifinfo_bat_v - neighbor information per outgoing
689 * interface for B.A.T.M.A.N. V
691 struct batadv_neigh_ifinfo_bat_v {
693 * @throughput: last throughput metric received from originator via this
698 /** @last_seqno: last sequence number known for this neighbor */
703 * struct batadv_neigh_ifinfo - neighbor information per outgoing interface
705 struct batadv_neigh_ifinfo {
706 /** @list: list node for &batadv_neigh_node.ifinfo_list */
707 struct hlist_node list;
709 /** @if_outgoing: pointer to outgoing hard-interface */
710 struct batadv_hard_iface *if_outgoing;
712 /** @bat_iv: B.A.T.M.A.N. IV private structure */
713 struct batadv_neigh_ifinfo_bat_iv bat_iv;
715 #ifdef CONFIG_BATMAN_ADV_BATMAN_V
716 /** @bat_v: B.A.T.M.A.N. V private data */
717 struct batadv_neigh_ifinfo_bat_v bat_v;
720 /** @last_ttl: last received ttl from this neigh node */
723 /** @refcount: number of contexts the object is used */
724 struct kref refcount;
726 /** @rcu: struct used for freeing in a RCU-safe manner */
730 #ifdef CONFIG_BATMAN_ADV_BLA
733 * struct batadv_bcast_duplist_entry - structure for LAN broadcast suppression
735 struct batadv_bcast_duplist_entry {
736 /** @orig: mac address of orig node orginating the broadcast */
739 /** @crc: crc32 checksum of broadcast payload */
742 /** @entrytime: time when the broadcast packet was received */
743 unsigned long entrytime;
748 * enum batadv_counters - indices for traffic counters
750 enum batadv_counters {
751 /** @BATADV_CNT_TX: transmitted payload traffic packet counter */
754 /** @BATADV_CNT_TX_BYTES: transmitted payload traffic bytes counter */
758 * @BATADV_CNT_TX_DROPPED: dropped transmission payload traffic packet
761 BATADV_CNT_TX_DROPPED,
763 /** @BATADV_CNT_RX: received payload traffic packet counter */
766 /** @BATADV_CNT_RX_BYTES: received payload traffic bytes counter */
769 /** @BATADV_CNT_FORWARD: forwarded payload traffic packet counter */
773 * @BATADV_CNT_FORWARD_BYTES: forwarded payload traffic bytes counter
775 BATADV_CNT_FORWARD_BYTES,
778 * @BATADV_CNT_MGMT_TX: transmitted routing protocol traffic packet
784 * @BATADV_CNT_MGMT_TX_BYTES: transmitted routing protocol traffic bytes
787 BATADV_CNT_MGMT_TX_BYTES,
790 * @BATADV_CNT_MGMT_RX: received routing protocol traffic packet counter
795 * @BATADV_CNT_MGMT_RX_BYTES: received routing protocol traffic bytes
798 BATADV_CNT_MGMT_RX_BYTES,
800 /** @BATADV_CNT_FRAG_TX: transmitted fragment traffic packet counter */
804 * @BATADV_CNT_FRAG_TX_BYTES: transmitted fragment traffic bytes counter
806 BATADV_CNT_FRAG_TX_BYTES,
808 /** @BATADV_CNT_FRAG_RX: received fragment traffic packet counter */
812 * @BATADV_CNT_FRAG_RX_BYTES: received fragment traffic bytes counter
814 BATADV_CNT_FRAG_RX_BYTES,
816 /** @BATADV_CNT_FRAG_FWD: forwarded fragment traffic packet counter */
820 * @BATADV_CNT_FRAG_FWD_BYTES: forwarded fragment traffic bytes counter
822 BATADV_CNT_FRAG_FWD_BYTES,
825 * @BATADV_CNT_TT_REQUEST_TX: transmitted tt req traffic packet counter
827 BATADV_CNT_TT_REQUEST_TX,
829 /** @BATADV_CNT_TT_REQUEST_RX: received tt req traffic packet counter */
830 BATADV_CNT_TT_REQUEST_RX,
833 * @BATADV_CNT_TT_RESPONSE_TX: transmitted tt resp traffic packet
836 BATADV_CNT_TT_RESPONSE_TX,
839 * @BATADV_CNT_TT_RESPONSE_RX: received tt resp traffic packet counter
841 BATADV_CNT_TT_RESPONSE_RX,
844 * @BATADV_CNT_TT_ROAM_ADV_TX: transmitted tt roam traffic packet
847 BATADV_CNT_TT_ROAM_ADV_TX,
850 * @BATADV_CNT_TT_ROAM_ADV_RX: received tt roam traffic packet counter
852 BATADV_CNT_TT_ROAM_ADV_RX,
854 #ifdef CONFIG_BATMAN_ADV_DAT
856 * @BATADV_CNT_DAT_GET_TX: transmitted dht GET traffic packet counter
858 BATADV_CNT_DAT_GET_TX,
860 /** @BATADV_CNT_DAT_GET_RX: received dht GET traffic packet counter */
861 BATADV_CNT_DAT_GET_RX,
864 * @BATADV_CNT_DAT_PUT_TX: transmitted dht PUT traffic packet counter
866 BATADV_CNT_DAT_PUT_TX,
868 /** @BATADV_CNT_DAT_PUT_RX: received dht PUT traffic packet counter */
869 BATADV_CNT_DAT_PUT_RX,
872 * @BATADV_CNT_DAT_CACHED_REPLY_TX: transmitted dat cache reply traffic
875 BATADV_CNT_DAT_CACHED_REPLY_TX,
878 #ifdef CONFIG_BATMAN_ADV_NC
880 * @BATADV_CNT_NC_CODE: transmitted nc-combined traffic packet counter
885 * @BATADV_CNT_NC_CODE_BYTES: transmitted nc-combined traffic bytes
888 BATADV_CNT_NC_CODE_BYTES,
891 * @BATADV_CNT_NC_RECODE: transmitted nc-recombined traffic packet
894 BATADV_CNT_NC_RECODE,
897 * @BATADV_CNT_NC_RECODE_BYTES: transmitted nc-recombined traffic bytes
900 BATADV_CNT_NC_RECODE_BYTES,
903 * @BATADV_CNT_NC_BUFFER: counter for packets buffered for later nc
906 BATADV_CNT_NC_BUFFER,
909 * @BATADV_CNT_NC_DECODE: received and nc-decoded traffic packet counter
911 BATADV_CNT_NC_DECODE,
914 * @BATADV_CNT_NC_DECODE_BYTES: received and nc-decoded traffic bytes
917 BATADV_CNT_NC_DECODE_BYTES,
920 * @BATADV_CNT_NC_DECODE_FAILED: received and decode-failed traffic
923 BATADV_CNT_NC_DECODE_FAILED,
926 * @BATADV_CNT_NC_SNIFFED: counter for nc-decoded packets received in
929 BATADV_CNT_NC_SNIFFED,
932 /** @BATADV_CNT_NUM: number of traffic counters */
937 * struct batadv_priv_tt - per mesh interface translation table data
939 struct batadv_priv_tt {
940 /** @vn: translation table version number */
944 * @ogm_append_cnt: counter of number of OGMs containing the local tt
947 atomic_t ogm_append_cnt;
949 /** @local_changes: changes registered in an originator interval */
950 atomic_t local_changes;
953 * @changes_list: tracks tt local changes within an originator interval
955 struct list_head changes_list;
957 /** @local_hash: local translation table hash table */
958 struct batadv_hashtable *local_hash;
960 /** @global_hash: global translation table hash table */
961 struct batadv_hashtable *global_hash;
963 /** @req_list: list of pending & unanswered tt_requests */
964 struct hlist_head req_list;
967 * @roam_list: list of the last roaming events of each client limiting
968 * the number of roaming events to avoid route flapping
970 struct list_head roam_list;
972 /** @changes_list_lock: lock protecting changes_list */
973 spinlock_t changes_list_lock;
975 /** @req_list_lock: lock protecting req_list */
976 spinlock_t req_list_lock;
978 /** @roam_list_lock: lock protecting roam_list */
979 spinlock_t roam_list_lock;
981 /** @last_changeset: last tt changeset this host has generated */
982 unsigned char *last_changeset;
985 * @last_changeset_len: length of last tt changeset this host has
988 s16 last_changeset_len;
991 * @last_changeset_lock: lock protecting last_changeset &
994 spinlock_t last_changeset_lock;
997 * @commit_lock: prevents from executing a local TT commit while reading
998 * the local table. The local TT commit is made up by two operations
999 * (data structure update and metdata -CRC/TTVN- recalculation) and
1000 * they have to be executed atomically in order to avoid another thread
1001 * to read the table/metadata between those.
1003 spinlock_t commit_lock;
1005 /** @work: work queue callback item for translation table purging */
1006 struct delayed_work work;
1009 #ifdef CONFIG_BATMAN_ADV_BLA
1012 * struct batadv_priv_bla - per mesh interface bridge loope avoidance data
1014 struct batadv_priv_bla {
1015 /** @num_requests: number of bla requests in flight */
1016 atomic_t num_requests;
1019 * @claim_hash: hash table containing mesh nodes this host has claimed
1021 struct batadv_hashtable *claim_hash;
1024 * @backbone_hash: hash table containing all detected backbone gateways
1026 struct batadv_hashtable *backbone_hash;
1028 /** @loopdetect_addr: MAC address used for own loopdetection frames */
1029 u8 loopdetect_addr[ETH_ALEN];
1032 * @loopdetect_lasttime: time when the loopdetection frames were sent
1034 unsigned long loopdetect_lasttime;
1037 * @loopdetect_next: how many periods to wait for the next loopdetect
1040 atomic_t loopdetect_next;
1043 * @bcast_duplist: recently received broadcast packets array (for
1044 * broadcast duplicate suppression)
1046 struct batadv_bcast_duplist_entry bcast_duplist[BATADV_DUPLIST_SIZE];
1049 * @bcast_duplist_curr: index of last broadcast packet added to
1052 int bcast_duplist_curr;
1055 * @bcast_duplist_lock: lock protecting bcast_duplist &
1056 * bcast_duplist_curr
1058 spinlock_t bcast_duplist_lock;
1060 /** @claim_dest: local claim data (e.g. claim group) */
1061 struct batadv_bla_claim_dst claim_dest;
1063 /** @work: work queue callback item for cleanups & bla announcements */
1064 struct delayed_work work;
1068 #ifdef CONFIG_BATMAN_ADV_DEBUG
1071 * struct batadv_priv_debug_log - debug logging data
1073 struct batadv_priv_debug_log {
1074 /** @log_buff: buffer holding the logs (ring bufer) */
1075 char log_buff[BATADV_LOG_BUF_LEN];
1077 /** @log_start: index of next character to read */
1078 unsigned long log_start;
1080 /** @log_end: index of next character to write */
1081 unsigned long log_end;
1083 /** @lock: lock protecting log_buff, log_start & log_end */
1086 /** @queue_wait: log reader's wait queue */
1087 wait_queue_head_t queue_wait;
1092 * struct batadv_priv_gw - per mesh interface gateway data
1094 struct batadv_priv_gw {
1095 /** @gateway_list: list of available gateway nodes */
1096 struct hlist_head gateway_list;
1098 /** @list_lock: lock protecting gateway_list & curr_gw */
1099 spinlock_t list_lock;
1101 /** @curr_gw: pointer to currently selected gateway node */
1102 struct batadv_gw_node __rcu *curr_gw;
1105 * @mode: gateway operation: off, client or server (see batadv_gw_modes)
1109 /** @sel_class: gateway selection class (applies if gw_mode client) */
1113 * @bandwidth_down: advertised uplink download bandwidth (if gw_mode
1116 atomic_t bandwidth_down;
1119 * @bandwidth_up: advertised uplink upload bandwidth (if gw_mode server)
1121 atomic_t bandwidth_up;
1123 /** @reselect: bool indicating a gateway re-selection is in progress */
1128 * struct batadv_priv_tvlv - per mesh interface tvlv data
1130 struct batadv_priv_tvlv {
1132 * @container_list: list of registered tvlv containers to be sent with
1135 struct hlist_head container_list;
1137 /** @handler_list: list of the various tvlv content handlers */
1138 struct hlist_head handler_list;
1140 /** @container_list_lock: protects tvlv container list access */
1141 spinlock_t container_list_lock;
1143 /** @handler_list_lock: protects handler list access */
1144 spinlock_t handler_list_lock;
1147 #ifdef CONFIG_BATMAN_ADV_DAT
1150 * struct batadv_priv_dat - per mesh interface DAT private data
1152 struct batadv_priv_dat {
1153 /** @addr: node DAT address */
1154 batadv_dat_addr_t addr;
1156 /** @hash: hashtable representing the local ARP cache */
1157 struct batadv_hashtable *hash;
1159 /** @work: work queue callback item for cache purging */
1160 struct delayed_work work;
1164 #ifdef CONFIG_BATMAN_ADV_MCAST
1166 * struct batadv_mcast_querier_state - IGMP/MLD querier state when bridged
1168 struct batadv_mcast_querier_state {
1169 /** @exists: whether a querier exists in the mesh */
1170 unsigned char exists:1;
1173 * @shadowing: if a querier exists, whether it is potentially shadowing
1174 * multicast listeners (i.e. querier is behind our own bridge segment)
1176 unsigned char shadowing:1;
1180 * struct batadv_priv_mcast - per mesh interface mcast data
1182 struct batadv_priv_mcast {
1184 * @mla_list: list of multicast addresses we are currently announcing
1187 struct hlist_head mla_list; /* see __batadv_mcast_mla_update() */
1190 * @want_all_unsnoopables_list: a list of orig_nodes wanting all
1191 * unsnoopable multicast traffic
1193 struct hlist_head want_all_unsnoopables_list;
1196 * @want_all_ipv4_list: a list of orig_nodes wanting all IPv4 multicast
1199 struct hlist_head want_all_ipv4_list;
1202 * @want_all_ipv6_list: a list of orig_nodes wanting all IPv6 multicast
1205 struct hlist_head want_all_ipv6_list;
1207 /** @querier_ipv4: the current state of an IGMP querier in the mesh */
1208 struct batadv_mcast_querier_state querier_ipv4;
1210 /** @querier_ipv6: the current state of an MLD querier in the mesh */
1211 struct batadv_mcast_querier_state querier_ipv6;
1213 /** @flags: the flags we have last sent in our mcast tvlv */
1216 /** @enabled: whether the multicast tvlv is currently enabled */
1217 unsigned char enabled:1;
1219 /** @bridged: whether the soft interface has a bridge on top */
1220 unsigned char bridged:1;
1223 * @mla_lock: a lock protecting mla_list and mla_flags
1225 spinlock_t mla_lock;
1228 * @num_want_all_unsnoopables: number of nodes wanting unsnoopable IP
1231 atomic_t num_want_all_unsnoopables;
1233 /** @num_want_all_ipv4: counter for items in want_all_ipv4_list */
1234 atomic_t num_want_all_ipv4;
1236 /** @num_want_all_ipv6: counter for items in want_all_ipv6_list */
1237 atomic_t num_want_all_ipv6;
1240 * @want_lists_lock: lock for protecting modifications to mcasts
1241 * want_all_{unsnoopables,ipv4,ipv6}_list (traversals are rcu-locked)
1243 spinlock_t want_lists_lock;
1245 /** @work: work queue callback item for multicast TT and TVLV updates */
1246 struct delayed_work work;
1251 * struct batadv_priv_nc - per mesh interface network coding private data
1253 struct batadv_priv_nc {
1254 /** @work: work queue callback item for cleanup */
1255 struct delayed_work work;
1257 #ifdef CONFIG_BATMAN_ADV_DEBUGFS
1259 * @debug_dir: dentry for nc subdir in batman-adv directory in debugfs
1261 struct dentry *debug_dir;
1265 * @min_tq: only consider neighbors for encoding if neigh_tq > min_tq
1270 * @max_fwd_delay: maximum packet forward delay to allow coding of
1276 * @max_buffer_time: buffer time for sniffed packets used to decoding
1278 u32 max_buffer_time;
1281 * @timestamp_fwd_flush: timestamp of last forward packet queue flush
1283 unsigned long timestamp_fwd_flush;
1286 * @timestamp_sniffed_purge: timestamp of last sniffed packet queue
1289 unsigned long timestamp_sniffed_purge;
1292 * @coding_hash: Hash table used to buffer skbs while waiting for
1293 * another incoming skb to code it with. Skbs are added to the buffer
1294 * just before being forwarded in routing.c
1296 struct batadv_hashtable *coding_hash;
1299 * @decoding_hash: Hash table used to buffer skbs that might be needed
1300 * to decode a received coded skb. The buffer is used for 1) skbs
1301 * arriving on the soft-interface; 2) skbs overheard on the
1302 * hard-interface; and 3) skbs forwarded by batman-adv.
1304 struct batadv_hashtable *decoding_hash;
1308 * struct batadv_tp_unacked - unacked packet meta-information
1310 * This struct is supposed to represent a buffer unacked packet. However, since
1311 * the purpose of the TP meter is to count the traffic only, there is no need to
1312 * store the entire sk_buff, the starting offset and the length are enough
1314 struct batadv_tp_unacked {
1315 /** @seqno: seqno of the unacked packet */
1318 /** @len: length of the packet */
1321 /** @list: list node for &batadv_tp_vars.unacked_list */
1322 struct list_head list;
1326 * enum batadv_tp_meter_role - Modus in tp meter session
1328 enum batadv_tp_meter_role {
1329 /** @BATADV_TP_RECEIVER: Initialized as receiver */
1332 /** @BATADV_TP_SENDER: Initialized as sender */
1337 * struct batadv_tp_vars - tp meter private variables per session
1339 struct batadv_tp_vars {
1340 /** @list: list node for &bat_priv.tp_list */
1341 struct hlist_node list;
1343 /** @timer: timer for ack (receiver) and retry (sender) */
1344 struct timer_list timer;
1346 /** @bat_priv: pointer to the mesh object */
1347 struct batadv_priv *bat_priv;
1349 /** @start_time: start time in jiffies */
1350 unsigned long start_time;
1352 /** @other_end: mac address of remote */
1353 u8 other_end[ETH_ALEN];
1355 /** @role: receiver/sender modi */
1356 enum batadv_tp_meter_role role;
1358 /** @sending: sending binary semaphore: 1 if sending, 0 is not */
1361 /** @reason: reason for a stopped session */
1362 enum batadv_tp_meter_reason reason;
1364 /** @finish_work: work item for the finishing procedure */
1365 struct delayed_work finish_work;
1367 /** @test_length: test length in milliseconds */
1370 /** @session: TP session identifier */
1373 /** @icmp_uid: local ICMP "socket" index */
1376 /* sender variables */
1378 /** @dec_cwnd: decimal part of the cwnd used during linear growth */
1381 /** @cwnd: current size of the congestion window */
1384 /** @cwnd_lock: lock do protect @cwnd & @dec_cwnd */
1385 spinlock_t cwnd_lock;
1388 * @ss_threshold: Slow Start threshold. Once cwnd exceeds this value the
1389 * connection switches to the Congestion Avoidance state
1393 /** @last_acked: last acked byte */
1394 atomic_t last_acked;
1396 /** @last_sent: last sent byte, not yet acked */
1399 /** @tot_sent: amount of data sent/ACKed so far */
1400 atomic64_t tot_sent;
1402 /** @dup_acks: duplicate ACKs counter */
1405 /** @fast_recovery: true if in Fast Recovery mode */
1406 unsigned char fast_recovery:1;
1408 /** @recover: last sent seqno when entering Fast Recovery */
1411 /** @rto: sender timeout */
1414 /** @srtt: smoothed RTT scaled by 2^3 */
1417 /** @rttvar: RTT variation scaled by 2^2 */
1421 * @more_bytes: waiting queue anchor when waiting for more ack/retry
1424 wait_queue_head_t more_bytes;
1426 /** @prerandom_offset: offset inside the prerandom buffer */
1427 u32 prerandom_offset;
1429 /** @prerandom_lock: spinlock protecting access to prerandom_offset */
1430 spinlock_t prerandom_lock;
1432 /* receiver variables */
1434 /** @last_recv: last in-order received packet */
1437 /** @unacked_list: list of unacked packets (meta-info only) */
1438 struct list_head unacked_list;
1440 /** @unacked_lock: protect unacked_list */
1441 spinlock_t unacked_lock;
1443 /** @last_recv_time: time time (jiffies) a msg was received */
1444 unsigned long last_recv_time;
1446 /** @refcount: number of context where the object is used */
1447 struct kref refcount;
1449 /** @rcu: struct used for freeing in an RCU-safe manner */
1450 struct rcu_head rcu;
1454 * struct batadv_softif_vlan - per VLAN attributes set
1456 struct batadv_softif_vlan {
1457 /** @bat_priv: pointer to the mesh object */
1458 struct batadv_priv *bat_priv;
1460 /** @vid: VLAN identifier */
1463 /** @kobj: kobject for sysfs vlan subdirectory */
1464 struct kobject *kobj;
1466 /** @ap_isolation: AP isolation state */
1467 atomic_t ap_isolation; /* boolean */
1469 /** @tt: TT private attributes (VLAN specific) */
1470 struct batadv_vlan_tt tt;
1472 /** @list: list node for &bat_priv.softif_vlan_list */
1473 struct hlist_node list;
1476 * @refcount: number of context where this object is currently in use
1478 struct kref refcount;
1480 /** @rcu: struct used for freeing in a RCU-safe manner */
1481 struct rcu_head rcu;
1485 * struct batadv_priv_bat_v - B.A.T.M.A.N. V per soft-interface private data
1487 struct batadv_priv_bat_v {
1488 /** @ogm_buff: buffer holding the OGM packet */
1489 unsigned char *ogm_buff;
1491 /** @ogm_buff_len: length of the OGM packet buffer */
1494 /** @ogm_seqno: OGM sequence number - used to identify each OGM */
1497 /** @ogm_buff_mutex: lock protecting ogm_buff and ogm_buff_len */
1498 struct mutex ogm_buff_mutex;
1500 /** @ogm_wq: workqueue used to schedule OGM transmissions */
1501 struct delayed_work ogm_wq;
1505 * struct batadv_priv - per mesh interface data
1507 struct batadv_priv {
1509 * @mesh_state: current status of the mesh
1510 * (inactive/active/deactivating)
1512 atomic_t mesh_state;
1514 /** @soft_iface: net device which holds this struct as private data */
1515 struct net_device *soft_iface;
1518 * @bat_counters: mesh internal traffic statistic counters (see
1521 u64 __percpu *bat_counters; /* Per cpu counters */
1524 * @aggregated_ogms: bool indicating whether OGM aggregation is enabled
1526 atomic_t aggregated_ogms;
1528 /** @bonding: bool indicating whether traffic bonding is enabled */
1532 * @fragmentation: bool indicating whether traffic fragmentation is
1535 atomic_t fragmentation;
1538 * @packet_size_max: max packet size that can be transmitted via
1539 * multiple fragmented skbs or a single frame if fragmentation is
1542 atomic_t packet_size_max;
1545 * @frag_seqno: incremental counter to identify chains of egress
1548 atomic_t frag_seqno;
1550 #ifdef CONFIG_BATMAN_ADV_BLA
1552 * @bridge_loop_avoidance: bool indicating whether bridge loop
1553 * avoidance is enabled
1555 atomic_t bridge_loop_avoidance;
1558 #ifdef CONFIG_BATMAN_ADV_DAT
1560 * @distributed_arp_table: bool indicating whether distributed ARP table
1563 atomic_t distributed_arp_table;
1566 #ifdef CONFIG_BATMAN_ADV_MCAST
1568 * @multicast_mode: Enable or disable multicast optimizations on this
1569 * node's sender/originating side
1571 atomic_t multicast_mode;
1574 /** @orig_interval: OGM broadcast interval in milliseconds */
1575 atomic_t orig_interval;
1578 * @hop_penalty: penalty which will be applied to an OGM's tq-field on
1581 atomic_t hop_penalty;
1583 #ifdef CONFIG_BATMAN_ADV_DEBUG
1584 /** @log_level: configured log level (see batadv_dbg_level) */
1589 * @isolation_mark: the skb->mark value used to match packets for AP
1595 * @isolation_mark_mask: bitmask identifying the bits in skb->mark to be
1596 * used for the isolation mark
1598 u32 isolation_mark_mask;
1600 /** @bcast_seqno: last sent broadcast packet sequence number */
1601 atomic_t bcast_seqno;
1604 * @bcast_queue_left: number of remaining buffered broadcast packet
1607 atomic_t bcast_queue_left;
1609 /** @batman_queue_left: number of remaining OGM packet slots */
1610 atomic_t batman_queue_left;
1612 /** @num_ifaces: number of interfaces assigned to this mesh interface */
1613 unsigned int num_ifaces;
1615 /** @mesh_obj: kobject for sysfs mesh subdirectory */
1616 struct kobject *mesh_obj;
1618 #ifdef CONFIG_BATMAN_ADV_DEBUGFS
1619 /** @debug_dir: dentry for debugfs batman-adv subdirectory */
1620 struct dentry *debug_dir;
1623 /** @forw_bat_list: list of aggregated OGMs that will be forwarded */
1624 struct hlist_head forw_bat_list;
1627 * @forw_bcast_list: list of broadcast packets that will be
1630 struct hlist_head forw_bcast_list;
1632 /** @tp_list: list of tp sessions */
1633 struct hlist_head tp_list;
1635 /** @tp_num: number of currently active tp sessions */
1636 struct batadv_hashtable *orig_hash;
1638 /** @orig_hash: hash table containing mesh participants (orig nodes) */
1639 spinlock_t forw_bat_list_lock;
1641 /** @forw_bat_list_lock: lock protecting forw_bat_list */
1642 spinlock_t forw_bcast_list_lock;
1644 /** @forw_bcast_list_lock: lock protecting forw_bcast_list */
1645 spinlock_t tp_list_lock;
1647 /** @tp_list_lock: spinlock protecting @tp_list */
1650 /** @orig_work: work queue callback item for orig node purging */
1651 struct delayed_work orig_work;
1654 * @primary_if: one of the hard-interfaces assigned to this mesh
1655 * interface becomes the primary interface
1657 struct batadv_hard_iface __rcu *primary_if; /* rcu protected pointer */
1659 /** @algo_ops: routing algorithm used by this mesh interface */
1660 struct batadv_algo_ops *algo_ops;
1663 * @softif_vlan_list: a list of softif_vlan structs, one per VLAN
1664 * created on top of the mesh interface represented by this object
1666 struct hlist_head softif_vlan_list;
1668 /** @softif_vlan_list_lock: lock protecting softif_vlan_list */
1669 spinlock_t softif_vlan_list_lock;
1671 #ifdef CONFIG_BATMAN_ADV_BLA
1672 /** @bla: bridge loope avoidance data */
1673 struct batadv_priv_bla bla;
1676 #ifdef CONFIG_BATMAN_ADV_DEBUG
1677 /** @debug_log: holding debug logging relevant data */
1678 struct batadv_priv_debug_log *debug_log;
1681 /** @gw: gateway data */
1682 struct batadv_priv_gw gw;
1684 /** @tt: translation table data */
1685 struct batadv_priv_tt tt;
1687 /** @tvlv: type-version-length-value data */
1688 struct batadv_priv_tvlv tvlv;
1690 #ifdef CONFIG_BATMAN_ADV_DAT
1691 /** @dat: distributed arp table data */
1692 struct batadv_priv_dat dat;
1695 #ifdef CONFIG_BATMAN_ADV_MCAST
1696 /** @mcast: multicast data */
1697 struct batadv_priv_mcast mcast;
1700 #ifdef CONFIG_BATMAN_ADV_NC
1702 * @network_coding: bool indicating whether network coding is enabled
1704 atomic_t network_coding;
1706 /** @nc: network coding data */
1707 struct batadv_priv_nc nc;
1708 #endif /* CONFIG_BATMAN_ADV_NC */
1710 #ifdef CONFIG_BATMAN_ADV_BATMAN_V
1711 /** @bat_v: B.A.T.M.A.N. V per soft-interface private data */
1712 struct batadv_priv_bat_v bat_v;
1717 * struct batadv_socket_client - layer2 icmp socket client data
1719 struct batadv_socket_client {
1721 * @queue_list: packet queue for packets destined for this socket client
1723 struct list_head queue_list;
1725 /** @queue_len: number of packets in the packet queue (queue_list) */
1726 unsigned int queue_len;
1728 /** @index: socket client's index in the batadv_socket_client_hash */
1729 unsigned char index;
1731 /** @lock: lock protecting queue_list, queue_len & index */
1734 /** @queue_wait: socket client's wait queue */
1735 wait_queue_head_t queue_wait;
1737 /** @bat_priv: pointer to soft_iface this client belongs to */
1738 struct batadv_priv *bat_priv;
1742 * struct batadv_socket_packet - layer2 icmp packet for socket client
1744 struct batadv_socket_packet {
1745 /** @list: list node for &batadv_socket_client.queue_list */
1746 struct list_head list;
1748 /** @icmp_len: size of the layer2 icmp packet */
1751 /** @icmp_packet: layer2 icmp packet */
1752 u8 icmp_packet[BATADV_ICMP_MAX_PACKET_SIZE];
1755 #ifdef CONFIG_BATMAN_ADV_BLA
1758 * struct batadv_bla_backbone_gw - batman-adv gateway bridged into the LAN
1760 struct batadv_bla_backbone_gw {
1762 * @orig: originator address of backbone node (mac address of primary
1767 /** @vid: vlan id this gateway was detected on */
1770 /** @hash_entry: hlist node for &batadv_priv_bla.backbone_hash */
1771 struct hlist_node hash_entry;
1773 /** @bat_priv: pointer to soft_iface this backbone gateway belongs to */
1774 struct batadv_priv *bat_priv;
1776 /** @lasttime: last time we heard of this backbone gw */
1777 unsigned long lasttime;
1780 * @wait_periods: grace time for bridge forward delays and bla group
1781 * forming at bootup phase - no bcast traffic is formwared until it has
1784 atomic_t wait_periods;
1787 * @request_sent: if this bool is set to true we are out of sync with
1788 * this backbone gateway - no bcast traffic is formwared until the
1789 * situation was resolved
1791 atomic_t request_sent;
1793 /** @crc: crc16 checksum over all claims */
1796 /** @crc_lock: lock protecting crc */
1797 spinlock_t crc_lock;
1799 /** @report_work: work struct for reporting detected loops */
1800 struct work_struct report_work;
1802 /** @refcount: number of contexts the object is used */
1803 struct kref refcount;
1805 /** @rcu: struct used for freeing in an RCU-safe manner */
1806 struct rcu_head rcu;
1810 * struct batadv_bla_claim - claimed non-mesh client structure
1812 struct batadv_bla_claim {
1813 /** @addr: mac address of claimed non-mesh client */
1816 /** @vid: vlan id this client was detected on */
1819 /** @backbone_gw: pointer to backbone gw claiming this client */
1820 struct batadv_bla_backbone_gw *backbone_gw;
1822 /** @backbone_lock: lock protecting backbone_gw pointer */
1823 spinlock_t backbone_lock;
1825 /** @lasttime: last time we heard of claim (locals only) */
1826 unsigned long lasttime;
1828 /** @hash_entry: hlist node for &batadv_priv_bla.claim_hash */
1829 struct hlist_node hash_entry;
1831 /** @refcount: number of contexts the object is used */
1832 struct rcu_head rcu;
1834 /** @rcu: struct used for freeing in an RCU-safe manner */
1835 struct kref refcount;
1840 * struct batadv_tt_common_entry - tt local & tt global common data
1842 struct batadv_tt_common_entry {
1843 /** @addr: mac address of non-mesh client */
1846 /** @vid: VLAN identifier */
1850 * @hash_entry: hlist node for &batadv_priv_tt.local_hash or for
1851 * &batadv_priv_tt.global_hash
1853 struct hlist_node hash_entry;
1855 /** @flags: various state handling flags (see batadv_tt_client_flags) */
1858 /** @added_at: timestamp used for purging stale tt common entries */
1859 unsigned long added_at;
1861 /** @refcount: number of contexts the object is used */
1862 struct kref refcount;
1864 /** @rcu: struct used for freeing in an RCU-safe manner */
1865 struct rcu_head rcu;
1869 * struct batadv_tt_local_entry - translation table local entry data
1871 struct batadv_tt_local_entry {
1872 /** @common: general translation table data */
1873 struct batadv_tt_common_entry common;
1875 /** @last_seen: timestamp used for purging stale tt local entries */
1876 unsigned long last_seen;
1878 /** @vlan: soft-interface vlan of the entry */
1879 struct batadv_softif_vlan *vlan;
1883 * struct batadv_tt_global_entry - translation table global entry data
1885 struct batadv_tt_global_entry {
1886 /** @common: general translation table data */
1887 struct batadv_tt_common_entry common;
1889 /** @orig_list: list of orig nodes announcing this non-mesh client */
1890 struct hlist_head orig_list;
1892 /** @orig_list_count: number of items in the orig_list */
1893 atomic_t orig_list_count;
1895 /** @list_lock: lock protecting orig_list */
1896 spinlock_t list_lock;
1898 /** @roam_at: time at which TT_GLOBAL_ROAM was set */
1899 unsigned long roam_at;
1903 * struct batadv_tt_orig_list_entry - orig node announcing a non-mesh client
1905 struct batadv_tt_orig_list_entry {
1906 /** @orig_node: pointer to orig node announcing this non-mesh client */
1907 struct batadv_orig_node *orig_node;
1910 * @ttvn: translation table version number which added the non-mesh
1915 /** @flags: per orig entry TT sync flags */
1918 /** @list: list node for &batadv_tt_global_entry.orig_list */
1919 struct hlist_node list;
1921 /** @refcount: number of contexts the object is used */
1922 struct kref refcount;
1924 /** @rcu: struct used for freeing in an RCU-safe manner */
1925 struct rcu_head rcu;
1929 * struct batadv_tt_change_node - structure for tt changes occurred
1931 struct batadv_tt_change_node {
1932 /** @list: list node for &batadv_priv_tt.changes_list */
1933 struct list_head list;
1935 /** @change: holds the actual translation table diff data */
1936 struct batadv_tvlv_tt_change change;
1940 * struct batadv_tt_req_node - data to keep track of the tt requests in flight
1942 struct batadv_tt_req_node {
1944 * @addr: mac address address of the originator this request was sent to
1948 /** @issued_at: timestamp used for purging stale tt requests */
1949 unsigned long issued_at;
1951 /** @refcount: number of contexts the object is used by */
1952 struct kref refcount;
1954 /** @list: list node for &batadv_priv_tt.req_list */
1955 struct hlist_node list;
1959 * struct batadv_tt_roam_node - roaming client data
1961 struct batadv_tt_roam_node {
1962 /** @addr: mac address of the client in the roaming phase */
1966 * @counter: number of allowed roaming events per client within a single
1967 * OGM interval (changes are committed with each OGM)
1972 * @first_time: timestamp used for purging stale roaming node entries
1974 unsigned long first_time;
1976 /** @list: list node for &batadv_priv_tt.roam_list */
1977 struct list_head list;
1981 * struct batadv_nc_node - network coding node
1983 struct batadv_nc_node {
1984 /** @list: next and prev pointer for the list handling */
1985 struct list_head list;
1987 /** @addr: the node's mac address */
1990 /** @refcount: number of contexts the object is used by */
1991 struct kref refcount;
1993 /** @rcu: struct used for freeing in an RCU-safe manner */
1994 struct rcu_head rcu;
1996 /** @orig_node: pointer to corresponding orig node struct */
1997 struct batadv_orig_node *orig_node;
1999 /** @last_seen: timestamp of last ogm received from this node */
2000 unsigned long last_seen;
2004 * struct batadv_nc_path - network coding path
2006 struct batadv_nc_path {
2007 /** @hash_entry: next and prev pointer for the list handling */
2008 struct hlist_node hash_entry;
2010 /** @rcu: struct used for freeing in an RCU-safe manner */
2011 struct rcu_head rcu;
2013 /** @refcount: number of contexts the object is used by */
2014 struct kref refcount;
2016 /** @packet_list: list of buffered packets for this path */
2017 struct list_head packet_list;
2019 /** @packet_list_lock: access lock for packet list */
2020 spinlock_t packet_list_lock;
2022 /** @next_hop: next hop (destination) of path */
2023 u8 next_hop[ETH_ALEN];
2025 /** @prev_hop: previous hop (source) of path */
2026 u8 prev_hop[ETH_ALEN];
2028 /** @last_valid: timestamp for last validation of path */
2029 unsigned long last_valid;
2033 * struct batadv_nc_packet - network coding packet used when coding and
2036 struct batadv_nc_packet {
2037 /** @list: next and prev pointer for the list handling */
2038 struct list_head list;
2040 /** @packet_id: crc32 checksum of skb data */
2044 * @timestamp: field containing the info when the packet was added to
2047 unsigned long timestamp;
2049 /** @neigh_node: pointer to original next hop neighbor of skb */
2050 struct batadv_neigh_node *neigh_node;
2052 /** @skb: skb which can be encoded or used for decoding */
2053 struct sk_buff *skb;
2055 /** @nc_path: pointer to path this nc packet is attached to */
2056 struct batadv_nc_path *nc_path;
2060 * struct batadv_skb_cb - control buffer structure used to store private data
2061 * relevant to batman-adv in the skb->cb buffer in skbs.
2063 struct batadv_skb_cb {
2065 * @decoded: Marks a skb as decoded, which is checked when searching for
2066 * coding opportunities in network-coding.c
2068 unsigned char decoded:1;
2070 /** @num_bcasts: Counter for broadcast packet retransmissions */
2071 unsigned char num_bcasts;
2075 * struct batadv_forw_packet - structure for bcast packets to be sent/forwarded
2077 struct batadv_forw_packet {
2079 * @list: list node for &batadv_priv.forw.bcast_list and
2080 * &batadv_priv.forw.bat_list
2082 struct hlist_node list;
2084 /** @cleanup_list: list node for purging functions */
2085 struct hlist_node cleanup_list;
2087 /** @send_time: execution time for delayed_work (packet sending) */
2088 unsigned long send_time;
2091 * @own: bool for locally generated packets (local OGMs are re-scheduled
2096 /** @skb: bcast packet's skb buffer */
2097 struct sk_buff *skb;
2099 /** @packet_len: size of aggregated OGM packet inside the skb buffer */
2102 /** @direct_link_flags: direct link flags for aggregated OGM packets */
2103 u32 direct_link_flags;
2105 /** @num_packets: counter for aggregated OGMv1 packets */
2108 /** @delayed_work: work queue callback item for packet sending */
2109 struct delayed_work delayed_work;
2112 * @if_incoming: pointer to incoming hard-iface or primary iface if
2113 * locally generated packet
2115 struct batadv_hard_iface *if_incoming;
2118 * @if_outgoing: packet where the packet should be sent to, or NULL if
2121 struct batadv_hard_iface *if_outgoing;
2123 /** @queue_left: The queue (counter) this packet was applied to */
2124 atomic_t *queue_left;
2128 * struct batadv_algo_iface_ops - mesh algorithm callbacks (interface specific)
2130 struct batadv_algo_iface_ops {
2132 * @activate: start routing mechanisms when hard-interface is brought up
2135 void (*activate)(struct batadv_hard_iface *hard_iface);
2137 /** @enable: init routing info when hard-interface is enabled */
2138 int (*enable)(struct batadv_hard_iface *hard_iface);
2140 /** @enabled: notification when hard-interface was enabled (optional) */
2141 void (*enabled)(struct batadv_hard_iface *hard_iface);
2143 /** @disable: de-init routing info when hard-interface is disabled */
2144 void (*disable)(struct batadv_hard_iface *hard_iface);
2147 * @update_mac: (re-)init mac addresses of the protocol information
2148 * belonging to this hard-interface
2150 void (*update_mac)(struct batadv_hard_iface *hard_iface);
2152 /** @primary_set: called when primary interface is selected / changed */
2153 void (*primary_set)(struct batadv_hard_iface *hard_iface);
2157 * struct batadv_algo_neigh_ops - mesh algorithm callbacks (neighbour specific)
2159 struct batadv_algo_neigh_ops {
2160 /** @hardif_init: called on creation of single hop entry (optional) */
2161 void (*hardif_init)(struct batadv_hardif_neigh_node *neigh);
2164 * @cmp: compare the metrics of two neighbors for their respective
2165 * outgoing interfaces
2167 int (*cmp)(struct batadv_neigh_node *neigh1,
2168 struct batadv_hard_iface *if_outgoing1,
2169 struct batadv_neigh_node *neigh2,
2170 struct batadv_hard_iface *if_outgoing2);
2173 * @is_similar_or_better: check if neigh1 is equally similar or better
2174 * than neigh2 for their respective outgoing interface from the metric
2177 bool (*is_similar_or_better)(struct batadv_neigh_node *neigh1,
2178 struct batadv_hard_iface *if_outgoing1,
2179 struct batadv_neigh_node *neigh2,
2180 struct batadv_hard_iface *if_outgoing2);
2182 #ifdef CONFIG_BATMAN_ADV_DEBUGFS
2183 /** @print: print the single hop neighbor list (optional) */
2184 void (*print)(struct batadv_priv *priv, struct seq_file *seq);
2187 /** @dump: dump neighbors to a netlink socket (optional) */
2188 void (*dump)(struct sk_buff *msg, struct netlink_callback *cb,
2189 struct batadv_priv *priv,
2190 struct batadv_hard_iface *hard_iface);
2194 * struct batadv_algo_orig_ops - mesh algorithm callbacks (originator specific)
2196 struct batadv_algo_orig_ops {
2198 * @free: free the resources allocated by the routing algorithm for an
2199 * orig_node object (optional)
2201 void (*free)(struct batadv_orig_node *orig_node);
2204 * @add_if: ask the routing algorithm to apply the needed changes to the
2205 * orig_node due to a new hard-interface being added into the mesh
2208 int (*add_if)(struct batadv_orig_node *orig_node,
2209 unsigned int max_if_num);
2212 * @del_if: ask the routing algorithm to apply the needed changes to the
2213 * orig_node due to an hard-interface being removed from the mesh
2216 int (*del_if)(struct batadv_orig_node *orig_node,
2217 unsigned int max_if_num, unsigned int del_if_num);
2219 #ifdef CONFIG_BATMAN_ADV_DEBUGFS
2220 /** @print: print the originator table (optional) */
2221 void (*print)(struct batadv_priv *priv, struct seq_file *seq,
2222 struct batadv_hard_iface *hard_iface);
2225 /** @dump: dump originators to a netlink socket (optional) */
2226 void (*dump)(struct sk_buff *msg, struct netlink_callback *cb,
2227 struct batadv_priv *priv,
2228 struct batadv_hard_iface *hard_iface);
2232 * struct batadv_algo_gw_ops - mesh algorithm callbacks (GW specific)
2234 struct batadv_algo_gw_ops {
2235 /** @init_sel_class: initialize GW selection class (optional) */
2236 void (*init_sel_class)(struct batadv_priv *bat_priv);
2239 * @store_sel_class: parse and stores a new GW selection class
2242 ssize_t (*store_sel_class)(struct batadv_priv *bat_priv, char *buff,
2245 /** @show_sel_class: prints the current GW selection class (optional) */
2246 ssize_t (*show_sel_class)(struct batadv_priv *bat_priv, char *buff);
2249 * @get_best_gw_node: select the best GW from the list of available
2252 struct batadv_gw_node *(*get_best_gw_node)
2253 (struct batadv_priv *bat_priv);
2256 * @is_eligible: check if a newly discovered GW is a potential candidate
2257 * for the election as best GW (optional)
2259 bool (*is_eligible)(struct batadv_priv *bat_priv,
2260 struct batadv_orig_node *curr_gw_orig,
2261 struct batadv_orig_node *orig_node);
2263 #ifdef CONFIG_BATMAN_ADV_DEBUGFS
2264 /** @print: print the gateway table (optional) */
2265 void (*print)(struct batadv_priv *bat_priv, struct seq_file *seq);
2268 /** @dump: dump gateways to a netlink socket (optional) */
2269 void (*dump)(struct sk_buff *msg, struct netlink_callback *cb,
2270 struct batadv_priv *priv);
2274 * struct batadv_algo_ops - mesh algorithm callbacks
2276 struct batadv_algo_ops {
2277 /** @list: list node for the batadv_algo_list */
2278 struct hlist_node list;
2280 /** @name: name of the algorithm */
2283 /** @iface: callbacks related to interface handling */
2284 struct batadv_algo_iface_ops iface;
2286 /** @neigh: callbacks related to neighbors handling */
2287 struct batadv_algo_neigh_ops neigh;
2289 /** @orig: callbacks related to originators handling */
2290 struct batadv_algo_orig_ops orig;
2292 /** @gw: callbacks related to GW mode */
2293 struct batadv_algo_gw_ops gw;
2297 * struct batadv_dat_entry - it is a single entry of batman-adv ARP backend. It
2298 * is used to stored ARP entries needed for the global DAT cache
2300 struct batadv_dat_entry {
2301 /** @ip: the IPv4 corresponding to this DAT/ARP entry */
2304 /** @mac_addr: the MAC address associated to the stored IPv4 */
2305 u8 mac_addr[ETH_ALEN];
2307 /** @vid: the vlan ID associated to this entry */
2311 * @last_update: time in jiffies when this entry was refreshed last time
2313 unsigned long last_update;
2315 /** @hash_entry: hlist node for &batadv_priv_dat.hash */
2316 struct hlist_node hash_entry;
2318 /** @refcount: number of contexts the object is used */
2319 struct kref refcount;
2321 /** @rcu: struct used for freeing in an RCU-safe manner */
2322 struct rcu_head rcu;
2326 * struct batadv_hw_addr - a list entry for a MAC address
2328 struct batadv_hw_addr {
2329 /** @list: list node for the linking of entries */
2330 struct hlist_node list;
2332 /** @addr: the MAC address of this list entry */
2333 unsigned char addr[ETH_ALEN];
2337 * struct batadv_dat_candidate - candidate destination for DAT operations
2339 struct batadv_dat_candidate {
2341 * @type: the type of the selected candidate. It can one of the
2343 * - BATADV_DAT_CANDIDATE_NOT_FOUND
2344 * - BATADV_DAT_CANDIDATE_ORIG
2349 * @orig_node: if type is BATADV_DAT_CANDIDATE_ORIG this field points to
2350 * the corresponding originator node structure
2352 struct batadv_orig_node *orig_node;
2356 * struct batadv_tvlv_container - container for tvlv appended to OGMs
2358 struct batadv_tvlv_container {
2359 /** @list: hlist node for &batadv_priv_tvlv.container_list */
2360 struct hlist_node list;
2362 /** @tvlv_hdr: tvlv header information needed to construct the tvlv */
2363 struct batadv_tvlv_hdr tvlv_hdr;
2365 /** @refcount: number of contexts the object is used */
2366 struct kref refcount;
2370 * struct batadv_tvlv_handler - handler for specific tvlv type and version
2372 struct batadv_tvlv_handler {
2373 /** @list: hlist node for &batadv_priv_tvlv.handler_list */
2374 struct hlist_node list;
2377 * @ogm_handler: handler callback which is given the tvlv payload to
2378 * process on incoming OGM packets
2380 void (*ogm_handler)(struct batadv_priv *bat_priv,
2381 struct batadv_orig_node *orig,
2382 u8 flags, void *tvlv_value, u16 tvlv_value_len);
2385 * @unicast_handler: handler callback which is given the tvlv payload to
2386 * process on incoming unicast tvlv packets
2388 int (*unicast_handler)(struct batadv_priv *bat_priv,
2390 void *tvlv_value, u16 tvlv_value_len);
2392 /** @type: tvlv type this handler feels responsible for */
2395 /** @version: tvlv version this handler feels responsible for */
2398 /** @flags: tvlv handler flags */
2401 /** @refcount: number of contexts the object is used */
2402 struct kref refcount;
2404 /** @rcu: struct used for freeing in an RCU-safe manner */
2405 struct rcu_head rcu;
2409 * enum batadv_tvlv_handler_flags - tvlv handler flags definitions
2411 enum batadv_tvlv_handler_flags {
2413 * @BATADV_TVLV_HANDLER_OGM_CIFNOTFND: tvlv ogm processing function
2414 * will call this handler even if its type was not found (with no data)
2416 BATADV_TVLV_HANDLER_OGM_CIFNOTFND = BIT(1),
2419 * @BATADV_TVLV_HANDLER_OGM_CALLED: interval tvlv handling flag - the
2420 * API marks a handler as being called, so it won't be called if the
2421 * BATADV_TVLV_HANDLER_OGM_CIFNOTFND flag was set
2423 BATADV_TVLV_HANDLER_OGM_CALLED = BIT(2),
2427 * struct batadv_store_mesh_work - Work queue item to detach add/del interface
2430 struct batadv_store_mesh_work {
2432 * @net_dev: netdevice to add/remove to/from batman-adv soft-interface
2434 struct net_device *net_dev;
2436 /** @soft_iface_name: name of soft-interface to modify */
2437 char soft_iface_name[IFNAMSIZ];
2439 /** @work: work queue item */
2440 struct work_struct work;
2443 #endif /* _NET_BATMAN_ADV_TYPES_H_ */