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/netdevice.h>
32 #include <linux/netlink.h>
33 #include <linux/sched.h> /* for linux/wait.h */
34 #include <linux/spinlock.h>
35 #include <linux/types.h>
36 #include <linux/wait.h>
37 #include <linux/workqueue.h>
38 #include <uapi/linux/batadv_packet.h>
39 #include <uapi/linux/batman_adv.h>
43 #ifdef CONFIG_BATMAN_ADV_DAT
46 * typedef batadv_dat_addr_t - type used for all DHT addresses
48 * If it is changed, BATADV_DAT_ADDR_MAX is changed as well.
50 * *Please be careful: batadv_dat_addr_t must be UNSIGNED*
52 typedef u16 batadv_dat_addr_t;
54 #endif /* CONFIG_BATMAN_ADV_DAT */
57 * enum batadv_dhcp_recipient - dhcp destination
59 enum batadv_dhcp_recipient {
60 /** @BATADV_DHCP_NO: packet is not a dhcp message */
63 /** @BATADV_DHCP_TO_SERVER: dhcp message is directed to a server */
64 BATADV_DHCP_TO_SERVER,
66 /** @BATADV_DHCP_TO_CLIENT: dhcp message is directed to a client */
67 BATADV_DHCP_TO_CLIENT,
71 * BATADV_TT_REMOTE_MASK - bitmask selecting the flags that are sent over the
74 #define BATADV_TT_REMOTE_MASK 0x00FF
77 * BATADV_TT_SYNC_MASK - bitmask of the flags that need to be kept in sync
78 * among the nodes. These flags are used to compute the global/local CRC
80 #define BATADV_TT_SYNC_MASK 0x00F0
83 * struct batadv_hard_iface_bat_iv - per hard-interface B.A.T.M.A.N. IV data
85 struct batadv_hard_iface_bat_iv {
86 /** @ogm_buff: buffer holding the OGM packet */
87 unsigned char *ogm_buff;
89 /** @ogm_buff_len: length of the OGM packet buffer */
92 /** @ogm_seqno: OGM sequence number - used to identify each OGM */
97 * enum batadv_v_hard_iface_flags - interface flags useful to B.A.T.M.A.N. V
99 enum batadv_v_hard_iface_flags {
101 * @BATADV_FULL_DUPLEX: tells if the connection over this link is
104 BATADV_FULL_DUPLEX = BIT(0),
107 * @BATADV_WARNING_DEFAULT: tells whether we have warned the user that
108 * no throughput data is available for this interface and that default
109 * values are assumed.
111 BATADV_WARNING_DEFAULT = BIT(1),
115 * struct batadv_hard_iface_bat_v - per hard-interface B.A.T.M.A.N. V data
117 struct batadv_hard_iface_bat_v {
118 /** @elp_interval: time interval between two ELP transmissions */
119 atomic_t elp_interval;
121 /** @elp_seqno: current ELP sequence number */
124 /** @elp_skb: base skb containing the ELP message to send */
125 struct sk_buff *elp_skb;
127 /** @elp_wq: workqueue used to schedule ELP transmissions */
128 struct delayed_work elp_wq;
131 * @throughput_override: throughput override to disable link
134 atomic_t throughput_override;
136 /** @flags: interface specific flags */
141 * enum batadv_hard_iface_wifi_flags - Flags describing the wifi configuration
142 * of a batadv_hard_iface
144 enum batadv_hard_iface_wifi_flags {
145 /** @BATADV_HARDIF_WIFI_WEXT_DIRECT: it is a wext wifi device */
146 BATADV_HARDIF_WIFI_WEXT_DIRECT = BIT(0),
148 /** @BATADV_HARDIF_WIFI_CFG80211_DIRECT: it is a cfg80211 wifi device */
149 BATADV_HARDIF_WIFI_CFG80211_DIRECT = BIT(1),
152 * @BATADV_HARDIF_WIFI_WEXT_INDIRECT: link device is a wext wifi device
154 BATADV_HARDIF_WIFI_WEXT_INDIRECT = BIT(2),
157 * @BATADV_HARDIF_WIFI_CFG80211_INDIRECT: link device is a cfg80211 wifi
160 BATADV_HARDIF_WIFI_CFG80211_INDIRECT = BIT(3),
164 * struct batadv_hard_iface - network device known to batman-adv
166 struct batadv_hard_iface {
167 /** @list: list node for batadv_hardif_list */
168 struct list_head list;
170 /** @if_status: status of the interface for batman-adv */
174 * @num_bcasts: number of payload re-broadcasts on this interface (ARQ)
179 * @wifi_flags: flags whether this is (directly or indirectly) a wifi
184 /** @net_dev: pointer to the net_device */
185 struct net_device *net_dev;
187 /** @hardif_obj: kobject of the per interface sysfs "mesh" directory */
188 struct kobject *hardif_obj;
190 /** @refcount: number of contexts the object is used */
191 struct kref refcount;
194 * @batman_adv_ptype: packet type describing packets that should be
195 * processed by batman-adv for this interface
197 struct packet_type batman_adv_ptype;
200 * @soft_iface: the batman-adv interface which uses this network
203 struct net_device *soft_iface;
205 /** @rcu: struct used for freeing in an RCU-safe manner */
208 /** @bat_iv: per hard-interface B.A.T.M.A.N. IV data */
209 struct batadv_hard_iface_bat_iv bat_iv;
211 #ifdef CONFIG_BATMAN_ADV_BATMAN_V
212 /** @bat_v: per hard-interface B.A.T.M.A.N. V data */
213 struct batadv_hard_iface_bat_v bat_v;
216 #ifdef CONFIG_BATMAN_ADV_DEBUGFS
218 * @debug_dir: dentry for nc subdir in batman-adv directory in debugfs
220 struct dentry *debug_dir;
224 * @neigh_list: list of unique single hop neighbors via this interface
226 struct hlist_head neigh_list;
228 /** @neigh_list_lock: lock protecting neigh_list */
229 spinlock_t neigh_list_lock;
233 * struct batadv_orig_ifinfo - B.A.T.M.A.N. IV private orig_ifinfo members
235 struct batadv_orig_ifinfo_bat_iv {
237 * @bcast_own: bitfield which counts the number of our OGMs this
238 * orig_node rebroadcasted "back" to us (relative to last_real_seqno)
240 DECLARE_BITMAP(bcast_own, BATADV_TQ_LOCAL_WINDOW_SIZE);
242 /** @bcast_own_sum: sum of bcast_own */
247 * struct batadv_orig_ifinfo - originator info per outgoing interface
249 struct batadv_orig_ifinfo {
250 /** @list: list node for &batadv_orig_node.ifinfo_list */
251 struct hlist_node list;
253 /** @if_outgoing: pointer to outgoing hard-interface */
254 struct batadv_hard_iface *if_outgoing;
256 /** @router: router that should be used to reach this originator */
257 struct batadv_neigh_node __rcu *router;
259 /** @last_real_seqno: last and best known sequence number */
262 /** @last_ttl: ttl of last received packet */
265 /** @last_seqno_forwarded: seqno of the OGM which was forwarded last */
266 u32 last_seqno_forwarded;
268 /** @batman_seqno_reset: time when the batman seqno window was reset */
269 unsigned long batman_seqno_reset;
271 /** @bat_iv: B.A.T.M.A.N. IV private structure */
272 struct batadv_orig_ifinfo_bat_iv bat_iv;
274 /** @refcount: number of contexts the object is used */
275 struct kref refcount;
277 /** @rcu: struct used for freeing in an RCU-safe manner */
282 * struct batadv_frag_table_entry - head in the fragment buffer table
284 struct batadv_frag_table_entry {
285 /** @fragment_list: head of list with fragments */
286 struct hlist_head fragment_list;
288 /** @lock: lock to protect the list of fragments */
291 /** @timestamp: time (jiffie) of last received fragment */
292 unsigned long timestamp;
294 /** @seqno: sequence number of the fragments in the list */
297 /** @size: accumulated size of packets in list */
300 /** @total_size: expected size of the assembled packet */
305 * struct batadv_frag_list_entry - entry in a list of fragments
307 struct batadv_frag_list_entry {
308 /** @list: list node information */
309 struct hlist_node list;
311 /** @skb: fragment */
314 /** @no: fragment number in the set */
319 * struct batadv_vlan_tt - VLAN specific TT attributes
321 struct batadv_vlan_tt {
322 /** @crc: CRC32 checksum of the entries belonging to this vlan */
325 /** @num_entries: number of TT entries for this VLAN */
326 atomic_t num_entries;
330 * struct batadv_orig_node_vlan - VLAN specific data per orig_node
332 struct batadv_orig_node_vlan {
333 /** @vid: the VLAN identifier */
336 /** @tt: VLAN specific TT attributes */
337 struct batadv_vlan_tt tt;
339 /** @list: list node for &batadv_orig_node.vlan_list */
340 struct hlist_node list;
343 * @refcount: number of context where this object is currently in use
345 struct kref refcount;
347 /** @rcu: struct used for freeing in a RCU-safe manner */
352 * struct batadv_orig_bat_iv - B.A.T.M.A.N. IV private orig_node members
354 struct batadv_orig_bat_iv {
356 * @ogm_cnt_lock: lock protecting &batadv_orig_ifinfo_bat_iv.bcast_own,
357 * &batadv_orig_ifinfo_bat_iv.bcast_own_sum,
358 * &batadv_neigh_ifinfo_bat_iv.bat_iv.real_bits and
359 * &batadv_neigh_ifinfo_bat_iv.real_packet_count
361 spinlock_t ogm_cnt_lock;
365 * struct batadv_orig_node - structure for orig_list maintaining nodes of mesh
367 struct batadv_orig_node {
368 /** @orig: originator ethernet address */
371 /** @ifinfo_list: list for routers per outgoing interface */
372 struct hlist_head ifinfo_list;
375 * @last_bonding_candidate: pointer to last ifinfo of last used router
377 struct batadv_orig_ifinfo *last_bonding_candidate;
379 #ifdef CONFIG_BATMAN_ADV_DAT
380 /** @dat_addr: address of the orig node in the distributed hash */
381 batadv_dat_addr_t dat_addr;
384 /** @last_seen: time when last packet from this node was received */
385 unsigned long last_seen;
388 * @bcast_seqno_reset: time when the broadcast seqno window was reset
390 unsigned long bcast_seqno_reset;
392 #ifdef CONFIG_BATMAN_ADV_MCAST
394 * @mcast_handler_lock: synchronizes mcast-capability and -flag changes
396 spinlock_t mcast_handler_lock;
398 /** @mcast_flags: multicast flags announced by the orig node */
402 * @mcast_want_all_unsnoopables_node: a list node for the
403 * mcast.want_all_unsnoopables list
405 struct hlist_node mcast_want_all_unsnoopables_node;
408 * @mcast_want_all_ipv4_node: a list node for the mcast.want_all_ipv4
411 struct hlist_node mcast_want_all_ipv4_node;
413 * @mcast_want_all_ipv6_node: a list node for the mcast.want_all_ipv6
416 struct hlist_node mcast_want_all_ipv6_node;
419 /** @capabilities: announced capabilities of this originator */
420 unsigned long capabilities;
423 * @capa_initialized: bitfield to remember whether a capability was
426 unsigned long capa_initialized;
428 /** @last_ttvn: last seen translation table version number */
431 /** @tt_buff: last tt changeset this node received from the orig node */
432 unsigned char *tt_buff;
435 * @tt_buff_len: length of the last tt changeset this node received
440 /** @tt_buff_lock: lock that protects tt_buff and tt_buff_len */
441 spinlock_t tt_buff_lock;
444 * @tt_lock: prevents from updating the table while reading it. Table
445 * update is made up by two operations (data structure update and
446 * metdata -CRC/TTVN-recalculation) and they have to be executed
447 * atomically in order to avoid another thread to read the
448 * table/metadata between those.
453 * @bcast_bits: bitfield containing the info which payload broadcast
454 * originated from this orig node this host already has seen (relative
455 * to last_bcast_seqno)
457 DECLARE_BITMAP(bcast_bits, BATADV_TQ_LOCAL_WINDOW_SIZE);
460 * @last_bcast_seqno: last broadcast sequence number received by this
463 u32 last_bcast_seqno;
466 * @neigh_list: list of potential next hop neighbor towards this orig
469 struct hlist_head neigh_list;
472 * @neigh_list_lock: lock protecting neigh_list, ifinfo_list,
473 * last_bonding_candidate and router
475 spinlock_t neigh_list_lock;
477 /** @hash_entry: hlist node for &batadv_priv.orig_hash */
478 struct hlist_node hash_entry;
480 /** @bat_priv: pointer to soft_iface this orig node belongs to */
481 struct batadv_priv *bat_priv;
483 /** @bcast_seqno_lock: lock protecting bcast_bits & last_bcast_seqno */
484 spinlock_t bcast_seqno_lock;
486 /** @refcount: number of contexts the object is used */
487 struct kref refcount;
489 /** @rcu: struct used for freeing in an RCU-safe manner */
492 #ifdef CONFIG_BATMAN_ADV_NC
493 /** @in_coding_list: list of nodes this orig can hear */
494 struct list_head in_coding_list;
496 /** @out_coding_list: list of nodes that can hear this orig */
497 struct list_head out_coding_list;
499 /** @in_coding_list_lock: protects in_coding_list */
500 spinlock_t in_coding_list_lock;
502 /** @out_coding_list_lock: protects out_coding_list */
503 spinlock_t out_coding_list_lock;
506 /** @fragments: array with heads for fragment chains */
507 struct batadv_frag_table_entry fragments[BATADV_FRAG_BUFFER_COUNT];
510 * @vlan_list: a list of orig_node_vlan structs, one per VLAN served by
511 * the originator represented by this object
513 struct hlist_head vlan_list;
515 /** @vlan_list_lock: lock protecting vlan_list */
516 spinlock_t vlan_list_lock;
518 /** @bat_iv: B.A.T.M.A.N. IV private structure */
519 struct batadv_orig_bat_iv bat_iv;
523 * enum batadv_orig_capabilities - orig node capabilities
525 enum batadv_orig_capabilities {
527 * @BATADV_ORIG_CAPA_HAS_DAT: orig node has distributed arp table
530 BATADV_ORIG_CAPA_HAS_DAT,
532 /** @BATADV_ORIG_CAPA_HAS_NC: orig node has network coding enabled */
533 BATADV_ORIG_CAPA_HAS_NC,
535 /** @BATADV_ORIG_CAPA_HAS_TT: orig node has tt capability */
536 BATADV_ORIG_CAPA_HAS_TT,
539 * @BATADV_ORIG_CAPA_HAS_MCAST: orig node has some multicast capability
540 * (= orig node announces a tvlv of type BATADV_TVLV_MCAST)
542 BATADV_ORIG_CAPA_HAS_MCAST,
546 * struct batadv_gw_node - structure for orig nodes announcing gw capabilities
548 struct batadv_gw_node {
549 /** @list: list node for &batadv_priv_gw.list */
550 struct hlist_node list;
552 /** @orig_node: pointer to corresponding orig node */
553 struct batadv_orig_node *orig_node;
555 /** @bandwidth_down: advertised uplink download bandwidth */
558 /** @bandwidth_up: advertised uplink upload bandwidth */
561 /** @refcount: number of contexts the object is used */
562 struct kref refcount;
564 /** @rcu: struct used for freeing in an RCU-safe manner */
568 DECLARE_EWMA(throughput, 10, 8)
571 * struct batadv_hardif_neigh_node_bat_v - B.A.T.M.A.N. V private neighbor
574 struct batadv_hardif_neigh_node_bat_v {
575 /** @throughput: ewma link throughput towards this neighbor */
576 struct ewma_throughput throughput;
578 /** @elp_interval: time interval between two ELP transmissions */
581 /** @elp_latest_seqno: latest and best known ELP sequence number */
582 u32 elp_latest_seqno;
585 * @last_unicast_tx: when the last unicast packet has been sent to this
588 unsigned long last_unicast_tx;
590 /** @metric_work: work queue callback item for metric update */
591 struct work_struct metric_work;
595 * struct batadv_hardif_neigh_node - unique neighbor per hard-interface
597 struct batadv_hardif_neigh_node {
598 /** @list: list node for &batadv_hard_iface.neigh_list */
599 struct hlist_node list;
601 /** @addr: the MAC address of the neighboring interface */
605 * @orig: the address of the originator this neighbor node belongs to
609 /** @if_incoming: pointer to incoming hard-interface */
610 struct batadv_hard_iface *if_incoming;
612 /** @last_seen: when last packet via this neighbor was received */
613 unsigned long last_seen;
615 #ifdef CONFIG_BATMAN_ADV_BATMAN_V
616 /** @bat_v: B.A.T.M.A.N. V private data */
617 struct batadv_hardif_neigh_node_bat_v bat_v;
620 /** @refcount: number of contexts the object is used */
621 struct kref refcount;
623 /** @rcu: struct used for freeing in a RCU-safe manner */
628 * struct batadv_neigh_node - structure for single hops neighbors
630 struct batadv_neigh_node {
631 /** @list: list node for &batadv_orig_node.neigh_list */
632 struct hlist_node list;
634 /** @orig_node: pointer to corresponding orig_node */
635 struct batadv_orig_node *orig_node;
637 /** @addr: the MAC address of the neighboring interface */
640 /** @ifinfo_list: list for routing metrics per outgoing interface */
641 struct hlist_head ifinfo_list;
643 /** @ifinfo_lock: lock protecting ifinfo_list and its members */
644 spinlock_t ifinfo_lock;
646 /** @if_incoming: pointer to incoming hard-interface */
647 struct batadv_hard_iface *if_incoming;
649 /** @last_seen: when last packet via this neighbor was received */
650 unsigned long last_seen;
652 /** @hardif_neigh: hardif_neigh of this neighbor */
653 struct batadv_hardif_neigh_node *hardif_neigh;
655 /** @refcount: number of contexts the object is used */
656 struct kref refcount;
658 /** @rcu: struct used for freeing in an RCU-safe manner */
663 * struct batadv_neigh_ifinfo_bat_iv - neighbor information per outgoing
664 * interface for B.A.T.M.A.N. IV
666 struct batadv_neigh_ifinfo_bat_iv {
667 /** @tq_recv: ring buffer of received TQ values from this neigh node */
668 u8 tq_recv[BATADV_TQ_GLOBAL_WINDOW_SIZE];
670 /** @tq_index: ring buffer index */
674 * @tq_avg: averaged tq of all tq values in the ring buffer (tq_recv)
679 * @real_bits: bitfield containing the number of OGMs received from this
680 * neigh node (relative to orig_node->last_real_seqno)
682 DECLARE_BITMAP(real_bits, BATADV_TQ_LOCAL_WINDOW_SIZE);
684 /** @real_packet_count: counted result of real_bits */
685 u8 real_packet_count;
689 * struct batadv_neigh_ifinfo_bat_v - neighbor information per outgoing
690 * interface for B.A.T.M.A.N. V
692 struct batadv_neigh_ifinfo_bat_v {
694 * @throughput: last throughput metric received from originator via this
699 /** @last_seqno: last sequence number known for this neighbor */
704 * struct batadv_neigh_ifinfo - neighbor information per outgoing interface
706 struct batadv_neigh_ifinfo {
707 /** @list: list node for &batadv_neigh_node.ifinfo_list */
708 struct hlist_node list;
710 /** @if_outgoing: pointer to outgoing hard-interface */
711 struct batadv_hard_iface *if_outgoing;
713 /** @bat_iv: B.A.T.M.A.N. IV private structure */
714 struct batadv_neigh_ifinfo_bat_iv bat_iv;
716 #ifdef CONFIG_BATMAN_ADV_BATMAN_V
717 /** @bat_v: B.A.T.M.A.N. V private data */
718 struct batadv_neigh_ifinfo_bat_v bat_v;
721 /** @last_ttl: last received ttl from this neigh node */
724 /** @refcount: number of contexts the object is used */
725 struct kref refcount;
727 /** @rcu: struct used for freeing in a RCU-safe manner */
731 #ifdef CONFIG_BATMAN_ADV_BLA
734 * struct batadv_bcast_duplist_entry - structure for LAN broadcast suppression
736 struct batadv_bcast_duplist_entry {
737 /** @orig: mac address of orig node orginating the broadcast */
740 /** @crc: crc32 checksum of broadcast payload */
743 /** @entrytime: time when the broadcast packet was received */
744 unsigned long entrytime;
749 * enum batadv_counters - indices for traffic counters
751 enum batadv_counters {
752 /** @BATADV_CNT_TX: transmitted payload traffic packet counter */
755 /** @BATADV_CNT_TX_BYTES: transmitted payload traffic bytes counter */
759 * @BATADV_CNT_TX_DROPPED: dropped transmission payload traffic packet
762 BATADV_CNT_TX_DROPPED,
764 /** @BATADV_CNT_RX: received payload traffic packet counter */
767 /** @BATADV_CNT_RX_BYTES: received payload traffic bytes counter */
770 /** @BATADV_CNT_FORWARD: forwarded payload traffic packet counter */
774 * @BATADV_CNT_FORWARD_BYTES: forwarded payload traffic bytes counter
776 BATADV_CNT_FORWARD_BYTES,
779 * @BATADV_CNT_MGMT_TX: transmitted routing protocol traffic packet
785 * @BATADV_CNT_MGMT_TX_BYTES: transmitted routing protocol traffic bytes
788 BATADV_CNT_MGMT_TX_BYTES,
791 * @BATADV_CNT_MGMT_RX: received routing protocol traffic packet counter
796 * @BATADV_CNT_MGMT_RX_BYTES: received routing protocol traffic bytes
799 BATADV_CNT_MGMT_RX_BYTES,
801 /** @BATADV_CNT_FRAG_TX: transmitted fragment traffic packet counter */
805 * @BATADV_CNT_FRAG_TX_BYTES: transmitted fragment traffic bytes counter
807 BATADV_CNT_FRAG_TX_BYTES,
809 /** @BATADV_CNT_FRAG_RX: received fragment traffic packet counter */
813 * @BATADV_CNT_FRAG_RX_BYTES: received fragment traffic bytes counter
815 BATADV_CNT_FRAG_RX_BYTES,
817 /** @BATADV_CNT_FRAG_FWD: forwarded fragment traffic packet counter */
821 * @BATADV_CNT_FRAG_FWD_BYTES: forwarded fragment traffic bytes counter
823 BATADV_CNT_FRAG_FWD_BYTES,
826 * @BATADV_CNT_TT_REQUEST_TX: transmitted tt req traffic packet counter
828 BATADV_CNT_TT_REQUEST_TX,
830 /** @BATADV_CNT_TT_REQUEST_RX: received tt req traffic packet counter */
831 BATADV_CNT_TT_REQUEST_RX,
834 * @BATADV_CNT_TT_RESPONSE_TX: transmitted tt resp traffic packet
837 BATADV_CNT_TT_RESPONSE_TX,
840 * @BATADV_CNT_TT_RESPONSE_RX: received tt resp traffic packet counter
842 BATADV_CNT_TT_RESPONSE_RX,
845 * @BATADV_CNT_TT_ROAM_ADV_TX: transmitted tt roam traffic packet
848 BATADV_CNT_TT_ROAM_ADV_TX,
851 * @BATADV_CNT_TT_ROAM_ADV_RX: received tt roam traffic packet counter
853 BATADV_CNT_TT_ROAM_ADV_RX,
855 #ifdef CONFIG_BATMAN_ADV_DAT
857 * @BATADV_CNT_DAT_GET_TX: transmitted dht GET traffic packet counter
859 BATADV_CNT_DAT_GET_TX,
861 /** @BATADV_CNT_DAT_GET_RX: received dht GET traffic packet counter */
862 BATADV_CNT_DAT_GET_RX,
865 * @BATADV_CNT_DAT_PUT_TX: transmitted dht PUT traffic packet counter
867 BATADV_CNT_DAT_PUT_TX,
869 /** @BATADV_CNT_DAT_PUT_RX: received dht PUT traffic packet counter */
870 BATADV_CNT_DAT_PUT_RX,
873 * @BATADV_CNT_DAT_CACHED_REPLY_TX: transmitted dat cache reply traffic
876 BATADV_CNT_DAT_CACHED_REPLY_TX,
879 #ifdef CONFIG_BATMAN_ADV_NC
881 * @BATADV_CNT_NC_CODE: transmitted nc-combined traffic packet counter
886 * @BATADV_CNT_NC_CODE_BYTES: transmitted nc-combined traffic bytes
889 BATADV_CNT_NC_CODE_BYTES,
892 * @BATADV_CNT_NC_RECODE: transmitted nc-recombined traffic packet
895 BATADV_CNT_NC_RECODE,
898 * @BATADV_CNT_NC_RECODE_BYTES: transmitted nc-recombined traffic bytes
901 BATADV_CNT_NC_RECODE_BYTES,
904 * @BATADV_CNT_NC_BUFFER: counter for packets buffered for later nc
907 BATADV_CNT_NC_BUFFER,
910 * @BATADV_CNT_NC_DECODE: received and nc-decoded traffic packet counter
912 BATADV_CNT_NC_DECODE,
915 * @BATADV_CNT_NC_DECODE_BYTES: received and nc-decoded traffic bytes
918 BATADV_CNT_NC_DECODE_BYTES,
921 * @BATADV_CNT_NC_DECODE_FAILED: received and decode-failed traffic
924 BATADV_CNT_NC_DECODE_FAILED,
927 * @BATADV_CNT_NC_SNIFFED: counter for nc-decoded packets received in
930 BATADV_CNT_NC_SNIFFED,
933 /** @BATADV_CNT_NUM: number of traffic counters */
938 * struct batadv_priv_tt - per mesh interface translation table data
940 struct batadv_priv_tt {
941 /** @vn: translation table version number */
945 * @ogm_append_cnt: counter of number of OGMs containing the local tt
948 atomic_t ogm_append_cnt;
950 /** @local_changes: changes registered in an originator interval */
951 atomic_t local_changes;
954 * @changes_list: tracks tt local changes within an originator interval
956 struct list_head changes_list;
958 /** @local_hash: local translation table hash table */
959 struct batadv_hashtable *local_hash;
961 /** @global_hash: global translation table hash table */
962 struct batadv_hashtable *global_hash;
964 /** @req_list: list of pending & unanswered tt_requests */
965 struct hlist_head req_list;
968 * @roam_list: list of the last roaming events of each client limiting
969 * the number of roaming events to avoid route flapping
971 struct list_head roam_list;
973 /** @changes_list_lock: lock protecting changes_list */
974 spinlock_t changes_list_lock;
976 /** @req_list_lock: lock protecting req_list */
977 spinlock_t req_list_lock;
979 /** @roam_list_lock: lock protecting roam_list */
980 spinlock_t roam_list_lock;
982 /** @last_changeset: last tt changeset this host has generated */
983 unsigned char *last_changeset;
986 * @last_changeset_len: length of last tt changeset this host has
989 s16 last_changeset_len;
992 * @last_changeset_lock: lock protecting last_changeset &
995 spinlock_t last_changeset_lock;
998 * @commit_lock: prevents from executing a local TT commit while reading
999 * the local table. The local TT commit is made up by two operations
1000 * (data structure update and metdata -CRC/TTVN- recalculation) and
1001 * they have to be executed atomically in order to avoid another thread
1002 * to read the table/metadata between those.
1004 spinlock_t commit_lock;
1006 /** @work: work queue callback item for translation table purging */
1007 struct delayed_work work;
1010 #ifdef CONFIG_BATMAN_ADV_BLA
1013 * struct batadv_priv_bla - per mesh interface bridge loope avoidance data
1015 struct batadv_priv_bla {
1016 /** @num_requests: number of bla requests in flight */
1017 atomic_t num_requests;
1020 * @claim_hash: hash table containing mesh nodes this host has claimed
1022 struct batadv_hashtable *claim_hash;
1025 * @backbone_hash: hash table containing all detected backbone gateways
1027 struct batadv_hashtable *backbone_hash;
1029 /** @loopdetect_addr: MAC address used for own loopdetection frames */
1030 u8 loopdetect_addr[ETH_ALEN];
1033 * @loopdetect_lasttime: time when the loopdetection frames were sent
1035 unsigned long loopdetect_lasttime;
1038 * @loopdetect_next: how many periods to wait for the next loopdetect
1041 atomic_t loopdetect_next;
1044 * @bcast_duplist: recently received broadcast packets array (for
1045 * broadcast duplicate suppression)
1047 struct batadv_bcast_duplist_entry bcast_duplist[BATADV_DUPLIST_SIZE];
1050 * @bcast_duplist_curr: index of last broadcast packet added to
1053 int bcast_duplist_curr;
1056 * @bcast_duplist_lock: lock protecting bcast_duplist &
1057 * bcast_duplist_curr
1059 spinlock_t bcast_duplist_lock;
1061 /** @claim_dest: local claim data (e.g. claim group) */
1062 struct batadv_bla_claim_dst claim_dest;
1064 /** @work: work queue callback item for cleanups & bla announcements */
1065 struct delayed_work work;
1069 #ifdef CONFIG_BATMAN_ADV_DEBUG
1072 * struct batadv_priv_debug_log - debug logging data
1074 struct batadv_priv_debug_log {
1075 /** @log_buff: buffer holding the logs (ring bufer) */
1076 char log_buff[BATADV_LOG_BUF_LEN];
1078 /** @log_start: index of next character to read */
1079 unsigned long log_start;
1081 /** @log_end: index of next character to write */
1082 unsigned long log_end;
1084 /** @lock: lock protecting log_buff, log_start & log_end */
1087 /** @queue_wait: log reader's wait queue */
1088 wait_queue_head_t queue_wait;
1093 * struct batadv_priv_gw - per mesh interface gateway data
1095 struct batadv_priv_gw {
1096 /** @gateway_list: list of available gateway nodes */
1097 struct hlist_head gateway_list;
1099 /** @list_lock: lock protecting gateway_list & curr_gw */
1100 spinlock_t list_lock;
1102 /** @curr_gw: pointer to currently selected gateway node */
1103 struct batadv_gw_node __rcu *curr_gw;
1106 * @mode: gateway operation: off, client or server (see batadv_gw_modes)
1110 /** @sel_class: gateway selection class (applies if gw_mode client) */
1114 * @bandwidth_down: advertised uplink download bandwidth (if gw_mode
1117 atomic_t bandwidth_down;
1120 * @bandwidth_up: advertised uplink upload bandwidth (if gw_mode server)
1122 atomic_t bandwidth_up;
1124 /** @reselect: bool indicating a gateway re-selection is in progress */
1129 * struct batadv_priv_tvlv - per mesh interface tvlv data
1131 struct batadv_priv_tvlv {
1133 * @container_list: list of registered tvlv containers to be sent with
1136 struct hlist_head container_list;
1138 /** @handler_list: list of the various tvlv content handlers */
1139 struct hlist_head handler_list;
1141 /** @container_list_lock: protects tvlv container list access */
1142 spinlock_t container_list_lock;
1144 /** @handler_list_lock: protects handler list access */
1145 spinlock_t handler_list_lock;
1148 #ifdef CONFIG_BATMAN_ADV_DAT
1151 * struct batadv_priv_dat - per mesh interface DAT private data
1153 struct batadv_priv_dat {
1154 /** @addr: node DAT address */
1155 batadv_dat_addr_t addr;
1157 /** @hash: hashtable representing the local ARP cache */
1158 struct batadv_hashtable *hash;
1160 /** @work: work queue callback item for cache purging */
1161 struct delayed_work work;
1165 #ifdef CONFIG_BATMAN_ADV_MCAST
1167 * struct batadv_mcast_querier_state - IGMP/MLD querier state when bridged
1169 struct batadv_mcast_querier_state {
1170 /** @exists: whether a querier exists in the mesh */
1171 unsigned char exists:1;
1174 * @shadowing: if a querier exists, whether it is potentially shadowing
1175 * multicast listeners (i.e. querier is behind our own bridge segment)
1177 unsigned char shadowing:1;
1181 * struct batadv_priv_mcast - per mesh interface mcast data
1183 struct batadv_priv_mcast {
1185 * @mla_list: list of multicast addresses we are currently announcing
1188 struct hlist_head mla_list; /* see __batadv_mcast_mla_update() */
1191 * @want_all_unsnoopables_list: a list of orig_nodes wanting all
1192 * unsnoopable multicast traffic
1194 struct hlist_head want_all_unsnoopables_list;
1197 * @want_all_ipv4_list: a list of orig_nodes wanting all IPv4 multicast
1200 struct hlist_head want_all_ipv4_list;
1203 * @want_all_ipv6_list: a list of orig_nodes wanting all IPv6 multicast
1206 struct hlist_head want_all_ipv6_list;
1208 /** @querier_ipv4: the current state of an IGMP querier in the mesh */
1209 struct batadv_mcast_querier_state querier_ipv4;
1211 /** @querier_ipv6: the current state of an MLD querier in the mesh */
1212 struct batadv_mcast_querier_state querier_ipv6;
1214 /** @flags: the flags we have last sent in our mcast tvlv */
1217 /** @enabled: whether the multicast tvlv is currently enabled */
1218 unsigned char enabled:1;
1220 /** @bridged: whether the soft interface has a bridge on top */
1221 unsigned char bridged:1;
1224 * @num_want_all_unsnoopables: number of nodes wanting unsnoopable IP
1227 atomic_t num_want_all_unsnoopables;
1229 /** @num_want_all_ipv4: counter for items in want_all_ipv4_list */
1230 atomic_t num_want_all_ipv4;
1232 /** @num_want_all_ipv6: counter for items in want_all_ipv6_list */
1233 atomic_t num_want_all_ipv6;
1236 * @want_lists_lock: lock for protecting modifications to mcasts
1237 * want_all_{unsnoopables,ipv4,ipv6}_list (traversals are rcu-locked)
1239 spinlock_t want_lists_lock;
1241 /** @work: work queue callback item for multicast TT and TVLV updates */
1242 struct delayed_work work;
1247 * struct batadv_priv_nc - per mesh interface network coding private data
1249 struct batadv_priv_nc {
1250 /** @work: work queue callback item for cleanup */
1251 struct delayed_work work;
1253 #ifdef CONFIG_BATMAN_ADV_DEBUGFS
1255 * @debug_dir: dentry for nc subdir in batman-adv directory in debugfs
1257 struct dentry *debug_dir;
1261 * @min_tq: only consider neighbors for encoding if neigh_tq > min_tq
1266 * @max_fwd_delay: maximum packet forward delay to allow coding of
1272 * @max_buffer_time: buffer time for sniffed packets used to decoding
1274 u32 max_buffer_time;
1277 * @timestamp_fwd_flush: timestamp of last forward packet queue flush
1279 unsigned long timestamp_fwd_flush;
1282 * @timestamp_sniffed_purge: timestamp of last sniffed packet queue
1285 unsigned long timestamp_sniffed_purge;
1288 * @coding_hash: Hash table used to buffer skbs while waiting for
1289 * another incoming skb to code it with. Skbs are added to the buffer
1290 * just before being forwarded in routing.c
1292 struct batadv_hashtable *coding_hash;
1295 * @decoding_hash: Hash table used to buffer skbs that might be needed
1296 * to decode a received coded skb. The buffer is used for 1) skbs
1297 * arriving on the soft-interface; 2) skbs overheard on the
1298 * hard-interface; and 3) skbs forwarded by batman-adv.
1300 struct batadv_hashtable *decoding_hash;
1304 * struct batadv_tp_unacked - unacked packet meta-information
1306 * This struct is supposed to represent a buffer unacked packet. However, since
1307 * the purpose of the TP meter is to count the traffic only, there is no need to
1308 * store the entire sk_buff, the starting offset and the length are enough
1310 struct batadv_tp_unacked {
1311 /** @seqno: seqno of the unacked packet */
1314 /** @len: length of the packet */
1317 /** @list: list node for &batadv_tp_vars.unacked_list */
1318 struct list_head list;
1322 * enum batadv_tp_meter_role - Modus in tp meter session
1324 enum batadv_tp_meter_role {
1325 /** @BATADV_TP_RECEIVER: Initialized as receiver */
1328 /** @BATADV_TP_SENDER: Initialized as sender */
1333 * struct batadv_tp_vars - tp meter private variables per session
1335 struct batadv_tp_vars {
1336 /** @list: list node for &bat_priv.tp_list */
1337 struct hlist_node list;
1339 /** @timer: timer for ack (receiver) and retry (sender) */
1340 struct timer_list timer;
1342 /** @bat_priv: pointer to the mesh object */
1343 struct batadv_priv *bat_priv;
1345 /** @start_time: start time in jiffies */
1346 unsigned long start_time;
1348 /** @other_end: mac address of remote */
1349 u8 other_end[ETH_ALEN];
1351 /** @role: receiver/sender modi */
1352 enum batadv_tp_meter_role role;
1354 /** @sending: sending binary semaphore: 1 if sending, 0 is not */
1357 /** @reason: reason for a stopped session */
1358 enum batadv_tp_meter_reason reason;
1360 /** @finish_work: work item for the finishing procedure */
1361 struct delayed_work finish_work;
1363 /** @test_length: test length in milliseconds */
1366 /** @session: TP session identifier */
1369 /** @icmp_uid: local ICMP "socket" index */
1372 /* sender variables */
1374 /** @dec_cwnd: decimal part of the cwnd used during linear growth */
1377 /** @cwnd: current size of the congestion window */
1380 /** @cwnd_lock: lock do protect @cwnd & @dec_cwnd */
1381 spinlock_t cwnd_lock;
1384 * @ss_threshold: Slow Start threshold. Once cwnd exceeds this value the
1385 * connection switches to the Congestion Avoidance state
1389 /** @last_acked: last acked byte */
1390 atomic_t last_acked;
1392 /** @last_sent: last sent byte, not yet acked */
1395 /** @tot_sent: amount of data sent/ACKed so far */
1396 atomic64_t tot_sent;
1398 /** @dup_acks: duplicate ACKs counter */
1401 /** @fast_recovery: true if in Fast Recovery mode */
1402 unsigned char fast_recovery:1;
1404 /** @recover: last sent seqno when entering Fast Recovery */
1407 /** @rto: sender timeout */
1410 /** @srtt: smoothed RTT scaled by 2^3 */
1413 /** @rttvar: RTT variation scaled by 2^2 */
1417 * @more_bytes: waiting queue anchor when waiting for more ack/retry
1420 wait_queue_head_t more_bytes;
1422 /** @prerandom_offset: offset inside the prerandom buffer */
1423 u32 prerandom_offset;
1425 /** @prerandom_lock: spinlock protecting access to prerandom_offset */
1426 spinlock_t prerandom_lock;
1428 /* receiver variables */
1430 /** @last_recv: last in-order received packet */
1433 /** @unacked_list: list of unacked packets (meta-info only) */
1434 struct list_head unacked_list;
1436 /** @unacked_lock: protect unacked_list */
1437 spinlock_t unacked_lock;
1439 /** @last_recv_time: time time (jiffies) a msg was received */
1440 unsigned long last_recv_time;
1442 /** @refcount: number of context where the object is used */
1443 struct kref refcount;
1445 /** @rcu: struct used for freeing in an RCU-safe manner */
1446 struct rcu_head rcu;
1450 * struct batadv_softif_vlan - per VLAN attributes set
1452 struct batadv_softif_vlan {
1453 /** @bat_priv: pointer to the mesh object */
1454 struct batadv_priv *bat_priv;
1456 /** @vid: VLAN identifier */
1459 /** @kobj: kobject for sysfs vlan subdirectory */
1460 struct kobject *kobj;
1462 /** @ap_isolation: AP isolation state */
1463 atomic_t ap_isolation; /* boolean */
1465 /** @tt: TT private attributes (VLAN specific) */
1466 struct batadv_vlan_tt tt;
1468 /** @list: list node for &bat_priv.softif_vlan_list */
1469 struct hlist_node list;
1472 * @refcount: number of context where this object is currently in use
1474 struct kref refcount;
1476 /** @rcu: struct used for freeing in a RCU-safe manner */
1477 struct rcu_head rcu;
1481 * struct batadv_priv_bat_v - B.A.T.M.A.N. V per soft-interface private data
1483 struct batadv_priv_bat_v {
1484 /** @ogm_buff: buffer holding the OGM packet */
1485 unsigned char *ogm_buff;
1487 /** @ogm_buff_len: length of the OGM packet buffer */
1490 /** @ogm_seqno: OGM sequence number - used to identify each OGM */
1493 /** @ogm_wq: workqueue used to schedule OGM transmissions */
1494 struct delayed_work ogm_wq;
1498 * struct batadv_priv - per mesh interface data
1500 struct batadv_priv {
1502 * @mesh_state: current status of the mesh
1503 * (inactive/active/deactivating)
1505 atomic_t mesh_state;
1507 /** @soft_iface: net device which holds this struct as private data */
1508 struct net_device *soft_iface;
1511 * @bat_counters: mesh internal traffic statistic counters (see
1514 u64 __percpu *bat_counters; /* Per cpu counters */
1517 * @aggregated_ogms: bool indicating whether OGM aggregation is enabled
1519 atomic_t aggregated_ogms;
1521 /** @bonding: bool indicating whether traffic bonding is enabled */
1525 * @fragmentation: bool indicating whether traffic fragmentation is
1528 atomic_t fragmentation;
1531 * @packet_size_max: max packet size that can be transmitted via
1532 * multiple fragmented skbs or a single frame if fragmentation is
1535 atomic_t packet_size_max;
1538 * @frag_seqno: incremental counter to identify chains of egress
1541 atomic_t frag_seqno;
1543 #ifdef CONFIG_BATMAN_ADV_BLA
1545 * @bridge_loop_avoidance: bool indicating whether bridge loop
1546 * avoidance is enabled
1548 atomic_t bridge_loop_avoidance;
1551 #ifdef CONFIG_BATMAN_ADV_DAT
1553 * @distributed_arp_table: bool indicating whether distributed ARP table
1556 atomic_t distributed_arp_table;
1559 #ifdef CONFIG_BATMAN_ADV_MCAST
1561 * @multicast_mode: Enable or disable multicast optimizations on this
1562 * node's sender/originating side
1564 atomic_t multicast_mode;
1567 /** @orig_interval: OGM broadcast interval in milliseconds */
1568 atomic_t orig_interval;
1571 * @hop_penalty: penalty which will be applied to an OGM's tq-field on
1574 atomic_t hop_penalty;
1576 #ifdef CONFIG_BATMAN_ADV_DEBUG
1577 /** @log_level: configured log level (see batadv_dbg_level) */
1582 * @isolation_mark: the skb->mark value used to match packets for AP
1588 * @isolation_mark_mask: bitmask identifying the bits in skb->mark to be
1589 * used for the isolation mark
1591 u32 isolation_mark_mask;
1593 /** @bcast_seqno: last sent broadcast packet sequence number */
1594 atomic_t bcast_seqno;
1597 * @bcast_queue_left: number of remaining buffered broadcast packet
1600 atomic_t bcast_queue_left;
1602 /** @batman_queue_left: number of remaining OGM packet slots */
1603 atomic_t batman_queue_left;
1605 /** @mesh_obj: kobject for sysfs mesh subdirectory */
1606 struct kobject *mesh_obj;
1608 #ifdef CONFIG_BATMAN_ADV_DEBUGFS
1609 /** @debug_dir: dentry for debugfs batman-adv subdirectory */
1610 struct dentry *debug_dir;
1613 /** @forw_bat_list: list of aggregated OGMs that will be forwarded */
1614 struct hlist_head forw_bat_list;
1617 * @forw_bcast_list: list of broadcast packets that will be
1620 struct hlist_head forw_bcast_list;
1622 /** @tp_list: list of tp sessions */
1623 struct hlist_head tp_list;
1625 /** @tp_num: number of currently active tp sessions */
1626 struct batadv_hashtable *orig_hash;
1628 /** @orig_hash: hash table containing mesh participants (orig nodes) */
1629 spinlock_t forw_bat_list_lock;
1631 /** @forw_bat_list_lock: lock protecting forw_bat_list */
1632 spinlock_t forw_bcast_list_lock;
1634 /** @forw_bcast_list_lock: lock protecting forw_bcast_list */
1635 spinlock_t tp_list_lock;
1637 /** @tp_list_lock: spinlock protecting @tp_list */
1640 /** @orig_work: work queue callback item for orig node purging */
1641 struct delayed_work orig_work;
1644 * @primary_if: one of the hard-interfaces assigned to this mesh
1645 * interface becomes the primary interface
1647 struct batadv_hard_iface __rcu *primary_if; /* rcu protected pointer */
1649 /** @algo_ops: routing algorithm used by this mesh interface */
1650 struct batadv_algo_ops *algo_ops;
1653 * @softif_vlan_list: a list of softif_vlan structs, one per VLAN
1654 * created on top of the mesh interface represented by this object
1656 struct hlist_head softif_vlan_list;
1658 /** @softif_vlan_list_lock: lock protecting softif_vlan_list */
1659 spinlock_t softif_vlan_list_lock;
1661 #ifdef CONFIG_BATMAN_ADV_BLA
1662 /** @bla: bridge loope avoidance data */
1663 struct batadv_priv_bla bla;
1666 #ifdef CONFIG_BATMAN_ADV_DEBUG
1667 /** @debug_log: holding debug logging relevant data */
1668 struct batadv_priv_debug_log *debug_log;
1671 /** @gw: gateway data */
1672 struct batadv_priv_gw gw;
1674 /** @tt: translation table data */
1675 struct batadv_priv_tt tt;
1677 /** @tvlv: type-version-length-value data */
1678 struct batadv_priv_tvlv tvlv;
1680 #ifdef CONFIG_BATMAN_ADV_DAT
1681 /** @dat: distributed arp table data */
1682 struct batadv_priv_dat dat;
1685 #ifdef CONFIG_BATMAN_ADV_MCAST
1686 /** @mcast: multicast data */
1687 struct batadv_priv_mcast mcast;
1690 #ifdef CONFIG_BATMAN_ADV_NC
1692 * @network_coding: bool indicating whether network coding is enabled
1694 atomic_t network_coding;
1696 /** @nc: network coding data */
1697 struct batadv_priv_nc nc;
1698 #endif /* CONFIG_BATMAN_ADV_NC */
1700 #ifdef CONFIG_BATMAN_ADV_BATMAN_V
1701 /** @bat_v: B.A.T.M.A.N. V per soft-interface private data */
1702 struct batadv_priv_bat_v bat_v;
1707 * struct batadv_socket_client - layer2 icmp socket client data
1709 struct batadv_socket_client {
1711 * @queue_list: packet queue for packets destined for this socket client
1713 struct list_head queue_list;
1715 /** @queue_len: number of packets in the packet queue (queue_list) */
1716 unsigned int queue_len;
1718 /** @index: socket client's index in the batadv_socket_client_hash */
1719 unsigned char index;
1721 /** @lock: lock protecting queue_list, queue_len & index */
1724 /** @queue_wait: socket client's wait queue */
1725 wait_queue_head_t queue_wait;
1727 /** @bat_priv: pointer to soft_iface this client belongs to */
1728 struct batadv_priv *bat_priv;
1732 * struct batadv_socket_packet - layer2 icmp packet for socket client
1734 struct batadv_socket_packet {
1735 /** @list: list node for &batadv_socket_client.queue_list */
1736 struct list_head list;
1738 /** @icmp_len: size of the layer2 icmp packet */
1741 /** @icmp_packet: layer2 icmp packet */
1742 u8 icmp_packet[BATADV_ICMP_MAX_PACKET_SIZE];
1745 #ifdef CONFIG_BATMAN_ADV_BLA
1748 * struct batadv_bla_backbone_gw - batman-adv gateway bridged into the LAN
1750 struct batadv_bla_backbone_gw {
1752 * @orig: originator address of backbone node (mac address of primary
1757 /** @vid: vlan id this gateway was detected on */
1760 /** @hash_entry: hlist node for &batadv_priv_bla.backbone_hash */
1761 struct hlist_node hash_entry;
1763 /** @bat_priv: pointer to soft_iface this backbone gateway belongs to */
1764 struct batadv_priv *bat_priv;
1766 /** @lasttime: last time we heard of this backbone gw */
1767 unsigned long lasttime;
1770 * @wait_periods: grace time for bridge forward delays and bla group
1771 * forming at bootup phase - no bcast traffic is formwared until it has
1774 atomic_t wait_periods;
1777 * @request_sent: if this bool is set to true we are out of sync with
1778 * this backbone gateway - no bcast traffic is formwared until the
1779 * situation was resolved
1781 atomic_t request_sent;
1783 /** @crc: crc16 checksum over all claims */
1786 /** @crc_lock: lock protecting crc */
1787 spinlock_t crc_lock;
1789 /** @report_work: work struct for reporting detected loops */
1790 struct work_struct report_work;
1792 /** @refcount: number of contexts the object is used */
1793 struct kref refcount;
1795 /** @rcu: struct used for freeing in an RCU-safe manner */
1796 struct rcu_head rcu;
1800 * struct batadv_bla_claim - claimed non-mesh client structure
1802 struct batadv_bla_claim {
1803 /** @addr: mac address of claimed non-mesh client */
1806 /** @vid: vlan id this client was detected on */
1809 /** @backbone_gw: pointer to backbone gw claiming this client */
1810 struct batadv_bla_backbone_gw *backbone_gw;
1812 /** @backbone_lock: lock protecting backbone_gw pointer */
1813 spinlock_t backbone_lock;
1815 /** @lasttime: last time we heard of claim (locals only) */
1816 unsigned long lasttime;
1818 /** @hash_entry: hlist node for &batadv_priv_bla.claim_hash */
1819 struct hlist_node hash_entry;
1821 /** @refcount: number of contexts the object is used */
1822 struct rcu_head rcu;
1824 /** @rcu: struct used for freeing in an RCU-safe manner */
1825 struct kref refcount;
1830 * struct batadv_tt_common_entry - tt local & tt global common data
1832 struct batadv_tt_common_entry {
1833 /** @addr: mac address of non-mesh client */
1836 /** @vid: VLAN identifier */
1840 * @hash_entry: hlist node for &batadv_priv_tt.local_hash or for
1841 * &batadv_priv_tt.global_hash
1843 struct hlist_node hash_entry;
1845 /** @flags: various state handling flags (see batadv_tt_client_flags) */
1848 /** @added_at: timestamp used for purging stale tt common entries */
1849 unsigned long added_at;
1851 /** @refcount: number of contexts the object is used */
1852 struct kref refcount;
1854 /** @rcu: struct used for freeing in an RCU-safe manner */
1855 struct rcu_head rcu;
1859 * struct batadv_tt_local_entry - translation table local entry data
1861 struct batadv_tt_local_entry {
1862 /** @common: general translation table data */
1863 struct batadv_tt_common_entry common;
1865 /** @last_seen: timestamp used for purging stale tt local entries */
1866 unsigned long last_seen;
1868 /** @vlan: soft-interface vlan of the entry */
1869 struct batadv_softif_vlan *vlan;
1873 * struct batadv_tt_global_entry - translation table global entry data
1875 struct batadv_tt_global_entry {
1876 /** @common: general translation table data */
1877 struct batadv_tt_common_entry common;
1879 /** @orig_list: list of orig nodes announcing this non-mesh client */
1880 struct hlist_head orig_list;
1882 /** @orig_list_count: number of items in the orig_list */
1883 atomic_t orig_list_count;
1885 /** @list_lock: lock protecting orig_list */
1886 spinlock_t list_lock;
1888 /** @roam_at: time at which TT_GLOBAL_ROAM was set */
1889 unsigned long roam_at;
1893 * struct batadv_tt_orig_list_entry - orig node announcing a non-mesh client
1895 struct batadv_tt_orig_list_entry {
1896 /** @orig_node: pointer to orig node announcing this non-mesh client */
1897 struct batadv_orig_node *orig_node;
1900 * @ttvn: translation table version number which added the non-mesh
1905 /** @flags: per orig entry TT sync flags */
1908 /** @list: list node for &batadv_tt_global_entry.orig_list */
1909 struct hlist_node list;
1911 /** @refcount: number of contexts the object is used */
1912 struct kref refcount;
1914 /** @rcu: struct used for freeing in an RCU-safe manner */
1915 struct rcu_head rcu;
1919 * struct batadv_tt_change_node - structure for tt changes occurred
1921 struct batadv_tt_change_node {
1922 /** @list: list node for &batadv_priv_tt.changes_list */
1923 struct list_head list;
1925 /** @change: holds the actual translation table diff data */
1926 struct batadv_tvlv_tt_change change;
1930 * struct batadv_tt_req_node - data to keep track of the tt requests in flight
1932 struct batadv_tt_req_node {
1934 * @addr: mac address address of the originator this request was sent to
1938 /** @issued_at: timestamp used for purging stale tt requests */
1939 unsigned long issued_at;
1941 /** @refcount: number of contexts the object is used by */
1942 struct kref refcount;
1944 /** @list: list node for &batadv_priv_tt.req_list */
1945 struct hlist_node list;
1949 * struct batadv_tt_roam_node - roaming client data
1951 struct batadv_tt_roam_node {
1952 /** @addr: mac address of the client in the roaming phase */
1956 * @counter: number of allowed roaming events per client within a single
1957 * OGM interval (changes are committed with each OGM)
1962 * @first_time: timestamp used for purging stale roaming node entries
1964 unsigned long first_time;
1966 /** @list: list node for &batadv_priv_tt.roam_list */
1967 struct list_head list;
1971 * struct batadv_nc_node - network coding node
1973 struct batadv_nc_node {
1974 /** @list: next and prev pointer for the list handling */
1975 struct list_head list;
1977 /** @addr: the node's mac address */
1980 /** @refcount: number of contexts the object is used by */
1981 struct kref refcount;
1983 /** @rcu: struct used for freeing in an RCU-safe manner */
1984 struct rcu_head rcu;
1986 /** @orig_node: pointer to corresponding orig node struct */
1987 struct batadv_orig_node *orig_node;
1989 /** @last_seen: timestamp of last ogm received from this node */
1990 unsigned long last_seen;
1994 * struct batadv_nc_path - network coding path
1996 struct batadv_nc_path {
1997 /** @hash_entry: next and prev pointer for the list handling */
1998 struct hlist_node hash_entry;
2000 /** @rcu: struct used for freeing in an RCU-safe manner */
2001 struct rcu_head rcu;
2003 /** @refcount: number of contexts the object is used by */
2004 struct kref refcount;
2006 /** @packet_list: list of buffered packets for this path */
2007 struct list_head packet_list;
2009 /** @packet_list_lock: access lock for packet list */
2010 spinlock_t packet_list_lock;
2012 /** @next_hop: next hop (destination) of path */
2013 u8 next_hop[ETH_ALEN];
2015 /** @prev_hop: previous hop (source) of path */
2016 u8 prev_hop[ETH_ALEN];
2018 /** @last_valid: timestamp for last validation of path */
2019 unsigned long last_valid;
2023 * struct batadv_nc_packet - network coding packet used when coding and
2026 struct batadv_nc_packet {
2027 /** @list: next and prev pointer for the list handling */
2028 struct list_head list;
2030 /** @packet_id: crc32 checksum of skb data */
2034 * @timestamp: field containing the info when the packet was added to
2037 unsigned long timestamp;
2039 /** @neigh_node: pointer to original next hop neighbor of skb */
2040 struct batadv_neigh_node *neigh_node;
2042 /** @skb: skb which can be encoded or used for decoding */
2043 struct sk_buff *skb;
2045 /** @nc_path: pointer to path this nc packet is attached to */
2046 struct batadv_nc_path *nc_path;
2050 * struct batadv_skb_cb - control buffer structure used to store private data
2051 * relevant to batman-adv in the skb->cb buffer in skbs.
2053 struct batadv_skb_cb {
2055 * @decoded: Marks a skb as decoded, which is checked when searching for
2056 * coding opportunities in network-coding.c
2058 unsigned char decoded:1;
2060 /** @num_bcasts: Counter for broadcast packet retransmissions */
2061 unsigned char num_bcasts;
2065 * struct batadv_forw_packet - structure for bcast packets to be sent/forwarded
2067 struct batadv_forw_packet {
2069 * @list: list node for &batadv_priv.forw.bcast_list and
2070 * &batadv_priv.forw.bat_list
2072 struct hlist_node list;
2074 /** @cleanup_list: list node for purging functions */
2075 struct hlist_node cleanup_list;
2077 /** @send_time: execution time for delayed_work (packet sending) */
2078 unsigned long send_time;
2081 * @own: bool for locally generated packets (local OGMs are re-scheduled
2086 /** @skb: bcast packet's skb buffer */
2087 struct sk_buff *skb;
2089 /** @packet_len: size of aggregated OGM packet inside the skb buffer */
2092 /** @direct_link_flags: direct link flags for aggregated OGM packets */
2093 u32 direct_link_flags;
2095 /** @num_packets: counter for aggregated OGMv1 packets */
2098 /** @delayed_work: work queue callback item for packet sending */
2099 struct delayed_work delayed_work;
2102 * @if_incoming: pointer to incoming hard-iface or primary iface if
2103 * locally generated packet
2105 struct batadv_hard_iface *if_incoming;
2108 * @if_outgoing: packet where the packet should be sent to, or NULL if
2111 struct batadv_hard_iface *if_outgoing;
2113 /** @queue_left: The queue (counter) this packet was applied to */
2114 atomic_t *queue_left;
2118 * struct batadv_algo_iface_ops - mesh algorithm callbacks (interface specific)
2120 struct batadv_algo_iface_ops {
2122 * @activate: start routing mechanisms when hard-interface is brought up
2125 void (*activate)(struct batadv_hard_iface *hard_iface);
2127 /** @enable: init routing info when hard-interface is enabled */
2128 int (*enable)(struct batadv_hard_iface *hard_iface);
2130 /** @disable: de-init routing info when hard-interface is disabled */
2131 void (*disable)(struct batadv_hard_iface *hard_iface);
2134 * @update_mac: (re-)init mac addresses of the protocol information
2135 * belonging to this hard-interface
2137 void (*update_mac)(struct batadv_hard_iface *hard_iface);
2139 /** @primary_set: called when primary interface is selected / changed */
2140 void (*primary_set)(struct batadv_hard_iface *hard_iface);
2144 * struct batadv_algo_neigh_ops - mesh algorithm callbacks (neighbour specific)
2146 struct batadv_algo_neigh_ops {
2147 /** @hardif_init: called on creation of single hop entry (optional) */
2148 void (*hardif_init)(struct batadv_hardif_neigh_node *neigh);
2151 * @cmp: compare the metrics of two neighbors for their respective
2152 * outgoing interfaces
2154 int (*cmp)(struct batadv_neigh_node *neigh1,
2155 struct batadv_hard_iface *if_outgoing1,
2156 struct batadv_neigh_node *neigh2,
2157 struct batadv_hard_iface *if_outgoing2);
2160 * @is_similar_or_better: check if neigh1 is equally similar or better
2161 * than neigh2 for their respective outgoing interface from the metric
2164 bool (*is_similar_or_better)(struct batadv_neigh_node *neigh1,
2165 struct batadv_hard_iface *if_outgoing1,
2166 struct batadv_neigh_node *neigh2,
2167 struct batadv_hard_iface *if_outgoing2);
2169 #ifdef CONFIG_BATMAN_ADV_DEBUGFS
2170 /** @print: print the single hop neighbor list (optional) */
2171 void (*print)(struct batadv_priv *priv, struct seq_file *seq);
2174 /** @dump: dump neighbors to a netlink socket (optional) */
2175 void (*dump)(struct sk_buff *msg, struct netlink_callback *cb,
2176 struct batadv_priv *priv,
2177 struct batadv_hard_iface *hard_iface);
2181 * struct batadv_algo_orig_ops - mesh algorithm callbacks (originator specific)
2183 struct batadv_algo_orig_ops {
2184 #ifdef CONFIG_BATMAN_ADV_DEBUGFS
2185 /** @print: print the originator table (optional) */
2186 void (*print)(struct batadv_priv *priv, struct seq_file *seq,
2187 struct batadv_hard_iface *hard_iface);
2190 /** @dump: dump originators to a netlink socket (optional) */
2191 void (*dump)(struct sk_buff *msg, struct netlink_callback *cb,
2192 struct batadv_priv *priv,
2193 struct batadv_hard_iface *hard_iface);
2197 * struct batadv_algo_gw_ops - mesh algorithm callbacks (GW specific)
2199 struct batadv_algo_gw_ops {
2200 /** @init_sel_class: initialize GW selection class (optional) */
2201 void (*init_sel_class)(struct batadv_priv *bat_priv);
2204 * @store_sel_class: parse and stores a new GW selection class
2207 ssize_t (*store_sel_class)(struct batadv_priv *bat_priv, char *buff,
2210 /** @show_sel_class: prints the current GW selection class (optional) */
2211 ssize_t (*show_sel_class)(struct batadv_priv *bat_priv, char *buff);
2214 * @get_best_gw_node: select the best GW from the list of available
2217 struct batadv_gw_node *(*get_best_gw_node)
2218 (struct batadv_priv *bat_priv);
2221 * @is_eligible: check if a newly discovered GW is a potential candidate
2222 * for the election as best GW (optional)
2224 bool (*is_eligible)(struct batadv_priv *bat_priv,
2225 struct batadv_orig_node *curr_gw_orig,
2226 struct batadv_orig_node *orig_node);
2228 #ifdef CONFIG_BATMAN_ADV_DEBUGFS
2229 /** @print: print the gateway table (optional) */
2230 void (*print)(struct batadv_priv *bat_priv, struct seq_file *seq);
2233 /** @dump: dump gateways to a netlink socket (optional) */
2234 void (*dump)(struct sk_buff *msg, struct netlink_callback *cb,
2235 struct batadv_priv *priv);
2239 * struct batadv_algo_ops - mesh algorithm callbacks
2241 struct batadv_algo_ops {
2242 /** @list: list node for the batadv_algo_list */
2243 struct hlist_node list;
2245 /** @name: name of the algorithm */
2248 /** @iface: callbacks related to interface handling */
2249 struct batadv_algo_iface_ops iface;
2251 /** @neigh: callbacks related to neighbors handling */
2252 struct batadv_algo_neigh_ops neigh;
2254 /** @orig: callbacks related to originators handling */
2255 struct batadv_algo_orig_ops orig;
2257 /** @gw: callbacks related to GW mode */
2258 struct batadv_algo_gw_ops gw;
2262 * struct batadv_dat_entry - it is a single entry of batman-adv ARP backend. It
2263 * is used to stored ARP entries needed for the global DAT cache
2265 struct batadv_dat_entry {
2266 /** @ip: the IPv4 corresponding to this DAT/ARP entry */
2269 /** @mac_addr: the MAC address associated to the stored IPv4 */
2270 u8 mac_addr[ETH_ALEN];
2272 /** @vid: the vlan ID associated to this entry */
2276 * @last_update: time in jiffies when this entry was refreshed last time
2278 unsigned long last_update;
2280 /** @hash_entry: hlist node for &batadv_priv_dat.hash */
2281 struct hlist_node hash_entry;
2283 /** @refcount: number of contexts the object is used */
2284 struct kref refcount;
2286 /** @rcu: struct used for freeing in an RCU-safe manner */
2287 struct rcu_head rcu;
2291 * struct batadv_hw_addr - a list entry for a MAC address
2293 struct batadv_hw_addr {
2294 /** @list: list node for the linking of entries */
2295 struct hlist_node list;
2297 /** @addr: the MAC address of this list entry */
2298 unsigned char addr[ETH_ALEN];
2302 * struct batadv_dat_candidate - candidate destination for DAT operations
2304 struct batadv_dat_candidate {
2306 * @type: the type of the selected candidate. It can one of the
2308 * - BATADV_DAT_CANDIDATE_NOT_FOUND
2309 * - BATADV_DAT_CANDIDATE_ORIG
2314 * @orig_node: if type is BATADV_DAT_CANDIDATE_ORIG this field points to
2315 * the corresponding originator node structure
2317 struct batadv_orig_node *orig_node;
2321 * struct batadv_tvlv_container - container for tvlv appended to OGMs
2323 struct batadv_tvlv_container {
2324 /** @list: hlist node for &batadv_priv_tvlv.container_list */
2325 struct hlist_node list;
2327 /** @tvlv_hdr: tvlv header information needed to construct the tvlv */
2328 struct batadv_tvlv_hdr tvlv_hdr;
2330 /** @refcount: number of contexts the object is used */
2331 struct kref refcount;
2335 * struct batadv_tvlv_handler - handler for specific tvlv type and version
2337 struct batadv_tvlv_handler {
2338 /** @list: hlist node for &batadv_priv_tvlv.handler_list */
2339 struct hlist_node list;
2342 * @ogm_handler: handler callback which is given the tvlv payload to
2343 * process on incoming OGM packets
2345 void (*ogm_handler)(struct batadv_priv *bat_priv,
2346 struct batadv_orig_node *orig,
2347 u8 flags, void *tvlv_value, u16 tvlv_value_len);
2350 * @unicast_handler: handler callback which is given the tvlv payload to
2351 * process on incoming unicast tvlv packets
2353 int (*unicast_handler)(struct batadv_priv *bat_priv,
2355 void *tvlv_value, u16 tvlv_value_len);
2357 /** @type: tvlv type this handler feels responsible for */
2360 /** @version: tvlv version this handler feels responsible for */
2363 /** @flags: tvlv handler flags */
2366 /** @refcount: number of contexts the object is used */
2367 struct kref refcount;
2369 /** @rcu: struct used for freeing in an RCU-safe manner */
2370 struct rcu_head rcu;
2374 * enum batadv_tvlv_handler_flags - tvlv handler flags definitions
2376 enum batadv_tvlv_handler_flags {
2378 * @BATADV_TVLV_HANDLER_OGM_CIFNOTFND: tvlv ogm processing function
2379 * will call this handler even if its type was not found (with no data)
2381 BATADV_TVLV_HANDLER_OGM_CIFNOTFND = BIT(1),
2384 * @BATADV_TVLV_HANDLER_OGM_CALLED: interval tvlv handling flag - the
2385 * API marks a handler as being called, so it won't be called if the
2386 * BATADV_TVLV_HANDLER_OGM_CIFNOTFND flag was set
2388 BATADV_TVLV_HANDLER_OGM_CALLED = BIT(2),
2392 * struct batadv_store_mesh_work - Work queue item to detach add/del interface
2395 struct batadv_store_mesh_work {
2397 * @net_dev: netdevice to add/remove to/from batman-adv soft-interface
2399 struct net_device *net_dev;
2401 /** @soft_iface_name: name of soft-interface to modify */
2402 char soft_iface_name[IFNAMSIZ];
2404 /** @work: work queue item */
2405 struct work_struct work;
2408 #endif /* _NET_BATMAN_ADV_TYPES_H_ */