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Sven Eckelmann9f6446c2015-04-23 13:16:35 +02001/* Copyright (C) 2007-2015 B.A.T.M.A.N. contributors:
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +00002 *
3 * Marek Lindner, Simon Wunderlich
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of version 2 of the GNU General Public
7 * License as published by the Free Software Foundation.
8 *
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
Antonio Quartulliebf38fb2013-11-03 20:40:48 +010015 * along with this program; if not, see <http://www.gnu.org/licenses/>.
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +000016 */
17
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +000018#ifndef _NET_BATMAN_ADV_TYPES_H_
19#define _NET_BATMAN_ADV_TYPES_H_
20
Sven Eckelmann1e2c2a42015-04-17 19:40:28 +020021#ifndef _NET_BATMAN_ADV_MAIN_H_
22#error only "main.h" can be included directly
23#endif
24
25#include <linux/bitops.h>
26#include <linux/compiler.h>
27#include <linux/if_ether.h>
28#include <linux/netdevice.h>
29#include <linux/sched.h> /* for linux/wait.h */
30#include <linux/spinlock.h>
31#include <linux/types.h>
32#include <linux/wait.h>
33#include <linux/workqueue.h>
34
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +000035#include "packet.h"
Sven Eckelmann1e2c2a42015-04-17 19:40:28 +020036
37struct seq_file;
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +000038
Antonio Quartulli17224472011-11-06 12:23:55 +010039#ifdef CONFIG_BATMAN_ADV_DAT
40
Antonio Quartulli151dcb32014-02-22 17:02:38 +010041/**
42 * batadv_dat_addr_t - it is the type used for all DHT addresses. If it is
43 * changed, BATADV_DAT_ADDR_MAX is changed as well.
Antonio Quartulli785ea112011-11-23 11:35:44 +010044 *
45 * *Please be careful: batadv_dat_addr_t must be UNSIGNED*
46 */
Sven Eckelmann6b5e9712015-05-26 18:34:26 +020047#define batadv_dat_addr_t u16
Antonio Quartulli785ea112011-11-23 11:35:44 +010048
Antonio Quartulli17224472011-11-06 12:23:55 +010049#endif /* CONFIG_BATMAN_ADV_DAT */
50
Marek Lindner14511512012-08-02 17:20:26 +020051/**
Antonio Quartulli6c413b12013-11-05 19:31:08 +010052 * enum batadv_dhcp_recipient - dhcp destination
53 * @BATADV_DHCP_NO: packet is not a dhcp message
54 * @BATADV_DHCP_TO_SERVER: dhcp message is directed to a server
55 * @BATADV_DHCP_TO_CLIENT: dhcp message is directed to a client
56 */
57enum batadv_dhcp_recipient {
58 BATADV_DHCP_NO = 0,
59 BATADV_DHCP_TO_SERVER,
60 BATADV_DHCP_TO_CLIENT,
61};
62
63/**
Antonio Quartulli3c4f7ab2013-10-13 02:50:19 +020064 * BATADV_TT_REMOTE_MASK - bitmask selecting the flags that are sent over the
65 * wire only
66 */
67#define BATADV_TT_REMOTE_MASK 0x00FF
68
69/**
Antonio Quartulli0eb015682013-10-13 02:50:20 +020070 * BATADV_TT_SYNC_MASK - bitmask of the flags that need to be kept in sync
71 * among the nodes. These flags are used to compute the global/local CRC
72 */
73#define BATADV_TT_SYNC_MASK 0x00F0
74
75/**
Marek Lindner14511512012-08-02 17:20:26 +020076 * struct batadv_hard_iface_bat_iv - per hard interface B.A.T.M.A.N. IV data
77 * @ogm_buff: buffer holding the OGM packet
78 * @ogm_buff_len: length of the OGM packet buffer
79 * @ogm_seqno: OGM sequence number - used to identify each OGM
80 */
81struct batadv_hard_iface_bat_iv {
82 unsigned char *ogm_buff;
83 int ogm_buff_len;
84 atomic_t ogm_seqno;
85};
86
Marek Lindner88a32c92012-12-25 21:45:12 +080087/**
88 * struct batadv_hard_iface - network device known to batman-adv
89 * @list: list node for batadv_hardif_list
90 * @if_num: identificator of the interface
91 * @if_status: status of the interface for batman-adv
92 * @net_dev: pointer to the net_device
Matthias Schiffercaf65bf2013-03-09 23:14:23 +010093 * @num_bcasts: number of payload re-broadcasts on this interface (ARQ)
Marek Lindner88a32c92012-12-25 21:45:12 +080094 * @hardif_obj: kobject of the per interface sysfs "mesh" directory
95 * @refcount: number of contexts the object is used
96 * @batman_adv_ptype: packet type describing packets that should be processed by
97 * batman-adv for this interface
98 * @soft_iface: the batman-adv interface which uses this network interface
99 * @rcu: struct used for freeing in an RCU-safe manner
100 * @bat_iv: BATMAN IV specific per hard interface data
Simon Wunderlich5bc44dc2013-01-11 10:19:51 +0100101 * @cleanup_work: work queue callback item for hard interface deinit
Simon Wunderlich5bc7c1e2013-11-21 14:16:12 +0100102 * @debug_dir: dentry for nc subdir in batman-adv directory in debugfs
Marek Lindner88a32c92012-12-25 21:45:12 +0800103 */
Sven Eckelmann56303d32012-06-05 22:31:31 +0200104struct batadv_hard_iface {
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000105 struct list_head list;
Sven Eckelmann6b5e9712015-05-26 18:34:26 +0200106 s16 if_num;
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000107 char if_status;
108 struct net_device *net_dev;
Sven Eckelmann6b5e9712015-05-26 18:34:26 +0200109 u8 num_bcasts;
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000110 struct kobject *hardif_obj;
Marek Lindnered75ccb2011-02-10 14:33:51 +0000111 atomic_t refcount;
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000112 struct packet_type batman_adv_ptype;
113 struct net_device *soft_iface;
114 struct rcu_head rcu;
Marek Lindner14511512012-08-02 17:20:26 +0200115 struct batadv_hard_iface_bat_iv bat_iv;
Simon Wunderlich5bc44dc2013-01-11 10:19:51 +0100116 struct work_struct cleanup_work;
Simon Wunderlich5bc7c1e2013-11-21 14:16:12 +0100117 struct dentry *debug_dir;
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000118};
119
Ben Hutchings2c530402012-07-10 10:55:09 +0000120/**
Simon Wunderlich7351a4822013-11-13 19:14:47 +0100121 * struct batadv_orig_ifinfo - originator info per outgoing interface
122 * @list: list node for orig_node::ifinfo_list
123 * @if_outgoing: pointer to outgoing hard interface
124 * @router: router that should be used to reach this originator
125 * @last_real_seqno: last and best known sequence number
126 * @last_ttl: ttl of last received packet
127 * @batman_seqno_reset: time when the batman seqno window was reset
128 * @refcount: number of contexts the object is used
129 * @rcu: struct used for freeing in an RCU-safe manner
130 */
131struct batadv_orig_ifinfo {
132 struct hlist_node list;
133 struct batadv_hard_iface *if_outgoing;
134 struct batadv_neigh_node __rcu *router; /* rcu protected pointer */
Sven Eckelmann6b5e9712015-05-26 18:34:26 +0200135 u32 last_real_seqno;
136 u8 last_ttl;
Simon Wunderlich7351a4822013-11-13 19:14:47 +0100137 unsigned long batman_seqno_reset;
138 atomic_t refcount;
139 struct rcu_head rcu;
140};
141
142/**
Martin Hundebøll610bfc6bc2013-05-23 16:53:02 +0200143 * struct batadv_frag_table_entry - head in the fragment buffer table
144 * @head: head of list with fragments
145 * @lock: lock to protect the list of fragments
146 * @timestamp: time (jiffie) of last received fragment
147 * @seqno: sequence number of the fragments in the list
148 * @size: accumulated size of packets in list
Sven Eckelmann53e77142014-12-01 10:37:27 +0100149 * @total_size: expected size of the assembled packet
Martin Hundebøll610bfc6bc2013-05-23 16:53:02 +0200150 */
151struct batadv_frag_table_entry {
152 struct hlist_head head;
153 spinlock_t lock; /* protects head */
154 unsigned long timestamp;
Sven Eckelmann6b5e9712015-05-26 18:34:26 +0200155 u16 seqno;
156 u16 size;
157 u16 total_size;
Martin Hundebøll610bfc6bc2013-05-23 16:53:02 +0200158};
159
160/**
161 * struct batadv_frag_list_entry - entry in a list of fragments
162 * @list: list node information
163 * @skb: fragment
164 * @no: fragment number in the set
165 */
166struct batadv_frag_list_entry {
167 struct hlist_node list;
168 struct sk_buff *skb;
Sven Eckelmann6b5e9712015-05-26 18:34:26 +0200169 u8 no;
Martin Hundebøll610bfc6bc2013-05-23 16:53:02 +0200170};
171
172/**
Antonio Quartulli7ea7b4a2013-07-30 22:16:25 +0200173 * struct batadv_vlan_tt - VLAN specific TT attributes
174 * @crc: CRC32 checksum of the entries belonging to this vlan
175 * @num_entries: number of TT entries for this VLAN
176 */
177struct batadv_vlan_tt {
Sven Eckelmann6b5e9712015-05-26 18:34:26 +0200178 u32 crc;
Antonio Quartulli7ea7b4a2013-07-30 22:16:25 +0200179 atomic_t num_entries;
180};
181
182/**
Simon Wunderlich1a321b02014-01-24 22:16:25 +0100183 * struct batadv_orig_node_vlan - VLAN specific data per orig_node
Antonio Quartulli7ea7b4a2013-07-30 22:16:25 +0200184 * @vid: the VLAN identifier
185 * @tt: VLAN specific TT attributes
186 * @list: list node for orig_node::vlan_list
187 * @refcount: number of context where this object is currently in use
188 * @rcu: struct used for freeing in a RCU-safe manner
189 */
190struct batadv_orig_node_vlan {
191 unsigned short vid;
192 struct batadv_vlan_tt tt;
Marek Lindnerd0fa4f32015-06-22 00:30:22 +0800193 struct hlist_node list;
Antonio Quartulli7ea7b4a2013-07-30 22:16:25 +0200194 atomic_t refcount;
195 struct rcu_head rcu;
196};
197
198/**
Antonio Quartullibbad0a52013-09-02 12:15:02 +0200199 * struct batadv_orig_bat_iv - B.A.T.M.A.N. IV private orig_node members
Markus Pargmann21102622014-12-26 12:41:37 +0100200 * @bcast_own: set of bitfields (one per hard interface) where each one counts
201 * the number of our OGMs this orig_node rebroadcasted "back" to us (relative
202 * to last_real_seqno). Every bitfield is BATADV_TQ_LOCAL_WINDOW_SIZE bits long.
203 * @bcast_own_sum: sum of bcast_own
Antonio Quartullibbad0a52013-09-02 12:15:02 +0200204 * @ogm_cnt_lock: lock protecting bcast_own, bcast_own_sum,
205 * neigh_node->bat_iv.real_bits & neigh_node->bat_iv.real_packet_count
206 */
207struct batadv_orig_bat_iv {
208 unsigned long *bcast_own;
Sven Eckelmann6b5e9712015-05-26 18:34:26 +0200209 u8 *bcast_own_sum;
Antonio Quartullibbad0a52013-09-02 12:15:02 +0200210 /* ogm_cnt_lock protects: bcast_own, bcast_own_sum,
211 * neigh_node->bat_iv.real_bits & neigh_node->bat_iv.real_packet_count
212 */
213 spinlock_t ogm_cnt_lock;
214};
215
216/**
Marek Lindnerb6d0ab72012-12-25 17:03:19 +0800217 * struct batadv_orig_node - structure for orig_list maintaining nodes of mesh
Marek Lindner88a32c92012-12-25 21:45:12 +0800218 * @orig: originator ethernet address
Simon Wunderlich7351a4822013-11-13 19:14:47 +0100219 * @ifinfo_list: list for routers per outgoing interface
Simon Wunderlichf3b3d902013-11-13 19:14:50 +0100220 * @last_bonding_candidate: pointer to last ifinfo of last used router
Marek Lindner88a32c92012-12-25 21:45:12 +0800221 * @batadv_dat_addr_t: address of the orig node in the distributed hash
Marek Lindner88a32c92012-12-25 21:45:12 +0800222 * @last_seen: time when last packet from this node was received
Marek Lindnerb6d0ab72012-12-25 17:03:19 +0800223 * @bcast_seqno_reset: time when the broadcast seqno window was reset
Linus Lüssing8a4023c2015-06-16 17:10:26 +0200224 * @mcast_handler_lock: synchronizes mcast-capability and -flag changes
Linus Lüssing60432d72014-02-15 17:47:51 +0100225 * @mcast_flags: multicast flags announced by the orig node
Linus Lüssingab498862014-02-15 17:47:53 +0100226 * @mcast_want_all_unsnoop_node: a list node for the
227 * mcast.want_all_unsnoopables list
Linus Lüssing4c8755d2014-02-15 17:47:54 +0100228 * @mcast_want_all_ipv4_node: a list node for the mcast.want_all_ipv4 list
229 * @mcast_want_all_ipv6_node: a list node for the mcast.want_all_ipv6 list
Marek Lindner17cf0ea2013-04-23 21:39:59 +0800230 * @capabilities: announced capabilities of this originator
Linus Lüssinge17931d2014-02-15 17:47:50 +0100231 * @capa_initialized: bitfield to remember whether a capability was initialized
Marek Lindner88a32c92012-12-25 21:45:12 +0800232 * @last_ttvn: last seen translation table version number
Marek Lindner88a32c92012-12-25 21:45:12 +0800233 * @tt_buff: last tt changeset this node received from the orig node
234 * @tt_buff_len: length of the last tt changeset this node received from the
235 * orig node
236 * @tt_buff_lock: lock that protects tt_buff and tt_buff_len
Antonio Quartullia70a9aa2013-07-30 22:16:24 +0200237 * @tt_lock: prevents from updating the table while reading it. Table update is
238 * made up by two operations (data structure update and metdata -CRC/TTVN-
239 * recalculation) and they have to be executed atomically in order to avoid
240 * another thread to read the table/metadata between those.
Marek Lindner88a32c92012-12-25 21:45:12 +0800241 * @bcast_bits: bitfield containing the info which payload broadcast originated
242 * from this orig node this host already has seen (relative to
243 * last_bcast_seqno)
Marek Lindnerb6d0ab72012-12-25 17:03:19 +0800244 * @last_bcast_seqno: last broadcast sequence number received by this host
Marek Lindner88a32c92012-12-25 21:45:12 +0800245 * @neigh_list: list of potential next hop neighbor towards this orig node
Simon Wunderlichf6c8b712013-11-13 19:14:45 +0100246 * @neigh_list_lock: lock protecting neigh_list and router
Marek Lindner88a32c92012-12-25 21:45:12 +0800247 * @hash_entry: hlist node for batadv_priv::orig_hash
248 * @bat_priv: pointer to soft_iface this orig node belongs to
Marek Lindner88a32c92012-12-25 21:45:12 +0800249 * @bcast_seqno_lock: lock protecting bcast_bits & last_bcast_seqno
Marek Lindner88a32c92012-12-25 21:45:12 +0800250 * @refcount: number of contexts the object is used
251 * @rcu: struct used for freeing in an RCU-safe manner
Martin Hundebølld56b1702013-01-25 11:12:39 +0100252 * @in_coding_list: list of nodes this orig can hear
253 * @out_coding_list: list of nodes that can hear this orig
254 * @in_coding_list_lock: protects in_coding_list
255 * @out_coding_list_lock: protects out_coding_list
Martin Hundebøll610bfc6bc2013-05-23 16:53:02 +0200256 * @fragments: array with heads for fragment chains
Antonio Quartulli7ea7b4a2013-07-30 22:16:25 +0200257 * @vlan_list: a list of orig_node_vlan structs, one per VLAN served by the
258 * originator represented by this object
259 * @vlan_list_lock: lock protecting vlan_list
Antonio Quartullibbad0a52013-09-02 12:15:02 +0200260 * @bat_iv: B.A.T.M.A.N. IV private structure
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000261 */
Sven Eckelmann56303d32012-06-05 22:31:31 +0200262struct batadv_orig_node {
Sven Eckelmann6b5e9712015-05-26 18:34:26 +0200263 u8 orig[ETH_ALEN];
Simon Wunderlich7351a4822013-11-13 19:14:47 +0100264 struct hlist_head ifinfo_list;
Simon Wunderlichf3b3d902013-11-13 19:14:50 +0100265 struct batadv_orig_ifinfo *last_bonding_candidate;
Antonio Quartulli17224472011-11-06 12:23:55 +0100266#ifdef CONFIG_BATMAN_ADV_DAT
Antonio Quartulli785ea112011-11-23 11:35:44 +0100267 batadv_dat_addr_t dat_addr;
Antonio Quartulli17224472011-11-06 12:23:55 +0100268#endif
Marek Lindnerd7b2a972012-03-01 15:35:19 +0800269 unsigned long last_seen;
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000270 unsigned long bcast_seqno_reset;
Linus Lüssing60432d72014-02-15 17:47:51 +0100271#ifdef CONFIG_BATMAN_ADV_MCAST
Linus Lüssing8a4023c2015-06-16 17:10:26 +0200272 /* synchronizes mcast tvlv specific orig changes */
273 spinlock_t mcast_handler_lock;
Sven Eckelmann6b5e9712015-05-26 18:34:26 +0200274 u8 mcast_flags;
Linus Lüssingab498862014-02-15 17:47:53 +0100275 struct hlist_node mcast_want_all_unsnoopables_node;
Linus Lüssing4c8755d2014-02-15 17:47:54 +0100276 struct hlist_node mcast_want_all_ipv4_node;
277 struct hlist_node mcast_want_all_ipv6_node;
Linus Lüssing60432d72014-02-15 17:47:51 +0100278#endif
Linus Lüssing65d7d4602015-06-16 17:10:22 +0200279 unsigned long capabilities;
Linus Lüssingac4eebd2015-06-16 17:10:24 +0200280 unsigned long capa_initialized;
Marek Lindner88a32c92012-12-25 21:45:12 +0800281 atomic_t last_ttvn;
Antonio Quartulli2dafb492011-05-05 08:42:45 +0200282 unsigned char *tt_buff;
Sven Eckelmann6b5e9712015-05-26 18:34:26 +0200283 s16 tt_buff_len;
Marek Lindner88a32c92012-12-25 21:45:12 +0800284 spinlock_t tt_buff_lock; /* protects tt_buff & tt_buff_len */
Antonio Quartullia70a9aa2013-07-30 22:16:24 +0200285 /* prevents from changing the table while reading it */
286 spinlock_t tt_lock;
Sven Eckelmann42d0b042012-06-03 22:19:17 +0200287 DECLARE_BITMAP(bcast_bits, BATADV_TQ_LOCAL_WINDOW_SIZE);
Sven Eckelmann6b5e9712015-05-26 18:34:26 +0200288 u32 last_bcast_seqno;
Marek Lindner9591a792010-12-12 21:57:11 +0000289 struct hlist_head neigh_list;
Simon Wunderlichf6c8b712013-11-13 19:14:45 +0100290 /* neigh_list_lock protects: neigh_list and router */
Marek Lindner88a32c92012-12-25 21:45:12 +0800291 spinlock_t neigh_list_lock;
Marek Lindner7aadf882011-02-18 12:28:09 +0000292 struct hlist_node hash_entry;
Sven Eckelmann56303d32012-06-05 22:31:31 +0200293 struct batadv_priv *bat_priv;
Marek Lindner88a32c92012-12-25 21:45:12 +0800294 /* bcast_seqno_lock protects: bcast_bits & last_bcast_seqno */
Sven Eckelmann6e215fd2011-05-08 12:45:45 +0200295 spinlock_t bcast_seqno_lock;
Marek Lindner88a32c92012-12-25 21:45:12 +0800296 atomic_t refcount;
297 struct rcu_head rcu;
Martin Hundebølld56b1702013-01-25 11:12:39 +0100298#ifdef CONFIG_BATMAN_ADV_NC
299 struct list_head in_coding_list;
300 struct list_head out_coding_list;
301 spinlock_t in_coding_list_lock; /* Protects in_coding_list */
302 spinlock_t out_coding_list_lock; /* Protects out_coding_list */
303#endif
Martin Hundebøll610bfc6bc2013-05-23 16:53:02 +0200304 struct batadv_frag_table_entry fragments[BATADV_FRAG_BUFFER_COUNT];
Marek Lindnerd0fa4f32015-06-22 00:30:22 +0800305 struct hlist_head vlan_list;
Antonio Quartulli7ea7b4a2013-07-30 22:16:25 +0200306 spinlock_t vlan_list_lock; /* protects vlan_list */
Antonio Quartullibbad0a52013-09-02 12:15:02 +0200307 struct batadv_orig_bat_iv bat_iv;
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000308};
309
Marek Lindner88a32c92012-12-25 21:45:12 +0800310/**
Marek Lindner17cf0ea2013-04-23 21:39:59 +0800311 * enum batadv_orig_capabilities - orig node capabilities
312 * @BATADV_ORIG_CAPA_HAS_DAT: orig node has distributed arp table enabled
Marek Lindner3f4841f2013-04-23 21:40:00 +0800313 * @BATADV_ORIG_CAPA_HAS_NC: orig node has network coding enabled
Linus Lüssinge17931d2014-02-15 17:47:50 +0100314 * @BATADV_ORIG_CAPA_HAS_TT: orig node has tt capability
Linus Lüssing60432d72014-02-15 17:47:51 +0100315 * @BATADV_ORIG_CAPA_HAS_MCAST: orig node has some multicast capability
316 * (= orig node announces a tvlv of type BATADV_TVLV_MCAST)
Marek Lindner17cf0ea2013-04-23 21:39:59 +0800317 */
318enum batadv_orig_capabilities {
Linus Lüssing65d7d4602015-06-16 17:10:22 +0200319 BATADV_ORIG_CAPA_HAS_DAT,
Linus Lüssing46354692015-06-16 17:10:23 +0200320 BATADV_ORIG_CAPA_HAS_NC,
Linus Lüssingac4eebd2015-06-16 17:10:24 +0200321 BATADV_ORIG_CAPA_HAS_TT,
Linus Lüssing9c936e32015-06-16 17:10:25 +0200322 BATADV_ORIG_CAPA_HAS_MCAST,
Marek Lindner17cf0ea2013-04-23 21:39:59 +0800323};
324
325/**
Marek Lindner88a32c92012-12-25 21:45:12 +0800326 * struct batadv_gw_node - structure for orig nodes announcing gw capabilities
327 * @list: list node for batadv_priv_gw::list
328 * @orig_node: pointer to corresponding orig node
Marek Lindner414254e2013-04-23 21:39:58 +0800329 * @bandwidth_down: advertised uplink download bandwidth
330 * @bandwidth_up: advertised uplink upload bandwidth
Marek Lindner88a32c92012-12-25 21:45:12 +0800331 * @refcount: number of contexts the object is used
332 * @rcu: struct used for freeing in an RCU-safe manner
333 */
Sven Eckelmann56303d32012-06-05 22:31:31 +0200334struct batadv_gw_node {
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000335 struct hlist_node list;
Sven Eckelmann56303d32012-06-05 22:31:31 +0200336 struct batadv_orig_node *orig_node;
Sven Eckelmann6b5e9712015-05-26 18:34:26 +0200337 u32 bandwidth_down;
338 u32 bandwidth_up;
Marek Lindner25b6d3c2011-02-10 14:33:49 +0000339 atomic_t refcount;
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000340 struct rcu_head rcu;
341};
342
Marek Lindner88a32c92012-12-25 21:45:12 +0800343/**
Antonio Quartulli0538f7592013-09-02 12:15:01 +0200344 * struct batadv_neigh_node - structure for single hops neighbors
345 * @list: list node for batadv_orig_node::neigh_list
346 * @orig_node: pointer to corresponding orig_node
347 * @addr: the MAC address of the neighboring interface
Simon Wunderlich89652332013-11-13 19:14:46 +0100348 * @ifinfo_list: list for routing metrics per outgoing interface
349 * @ifinfo_lock: lock protecting private ifinfo members and list
Antonio Quartulli0538f7592013-09-02 12:15:01 +0200350 * @if_incoming: pointer to incoming hard interface
351 * @last_seen: when last packet via this neighbor was received
352 * @last_ttl: last received ttl from this neigh node
Antonio Quartulli0538f7592013-09-02 12:15:01 +0200353 * @rcu: struct used for freeing in an RCU-safe manner
354 * @bat_iv: B.A.T.M.A.N. IV private structure
355 */
356struct batadv_neigh_node {
357 struct hlist_node list;
358 struct batadv_orig_node *orig_node;
Sven Eckelmann6b5e9712015-05-26 18:34:26 +0200359 u8 addr[ETH_ALEN];
Simon Wunderlich89652332013-11-13 19:14:46 +0100360 struct hlist_head ifinfo_list;
361 spinlock_t ifinfo_lock; /* protects ifinfo_list and its members */
Antonio Quartulli0538f7592013-09-02 12:15:01 +0200362 struct batadv_hard_iface *if_incoming;
363 unsigned long last_seen;
Simon Wunderlich89652332013-11-13 19:14:46 +0100364 atomic_t refcount;
365 struct rcu_head rcu;
366};
367
Simon Wunderlich1b371d12014-01-15 21:17:54 +0100368/**
Simon Wunderlich1a321b02014-01-24 22:16:25 +0100369 * struct batadv_neigh_ifinfo_bat_iv - neighbor information per outgoing
Simon Wunderlich89652332013-11-13 19:14:46 +0100370 * interface for BATMAN IV
371 * @tq_recv: ring buffer of received TQ values from this neigh node
372 * @tq_index: ring buffer index
373 * @tq_avg: averaged tq of all tq values in the ring buffer (tq_recv)
374 * @real_bits: bitfield containing the number of OGMs received from this neigh
375 * node (relative to orig_node->last_real_seqno)
376 * @real_packet_count: counted result of real_bits
377 */
378struct batadv_neigh_ifinfo_bat_iv {
Sven Eckelmann6b5e9712015-05-26 18:34:26 +0200379 u8 tq_recv[BATADV_TQ_GLOBAL_WINDOW_SIZE];
380 u8 tq_index;
381 u8 tq_avg;
Simon Wunderlich89652332013-11-13 19:14:46 +0100382 DECLARE_BITMAP(real_bits, BATADV_TQ_LOCAL_WINDOW_SIZE);
Sven Eckelmann6b5e9712015-05-26 18:34:26 +0200383 u8 real_packet_count;
Simon Wunderlich89652332013-11-13 19:14:46 +0100384};
385
Simon Wunderlich1b371d12014-01-15 21:17:54 +0100386/**
387 * struct batadv_neigh_ifinfo - neighbor information per outgoing interface
Simon Wunderlich89652332013-11-13 19:14:46 +0100388 * @list: list node for batadv_neigh_node::ifinfo_list
389 * @if_outgoing: pointer to outgoing hard interface
390 * @bat_iv: B.A.T.M.A.N. IV private structure
391 * @last_ttl: last received ttl from this neigh node
392 * @refcount: number of contexts the object is used
393 * @rcu: struct used for freeing in a RCU-safe manner
394 */
395struct batadv_neigh_ifinfo {
396 struct hlist_node list;
397 struct batadv_hard_iface *if_outgoing;
398 struct batadv_neigh_ifinfo_bat_iv bat_iv;
Sven Eckelmann6b5e9712015-05-26 18:34:26 +0200399 u8 last_ttl;
Marek Lindner88a32c92012-12-25 21:45:12 +0800400 atomic_t refcount;
401 struct rcu_head rcu;
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000402};
403
Marek Lindner88a32c92012-12-25 21:45:12 +0800404/**
405 * struct batadv_bcast_duplist_entry - structure for LAN broadcast suppression
406 * @orig[ETH_ALEN]: mac address of orig node orginating the broadcast
407 * @crc: crc32 checksum of broadcast payload
408 * @entrytime: time when the broadcast packet was received
409 */
Simon Wunderlich7a5cc242012-01-22 20:00:27 +0100410#ifdef CONFIG_BATMAN_ADV_BLA
Sven Eckelmann56303d32012-06-05 22:31:31 +0200411struct batadv_bcast_duplist_entry {
Sven Eckelmann6b5e9712015-05-26 18:34:26 +0200412 u8 orig[ETH_ALEN];
Simon Wunderlich004e86f2012-10-18 13:47:42 +0200413 __be32 crc;
Simon Wunderlichfe2da6f2012-01-22 20:00:24 +0100414 unsigned long entrytime;
415};
Simon Wunderlich7a5cc242012-01-22 20:00:27 +0100416#endif
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000417
Marek Lindner88a32c92012-12-25 21:45:12 +0800418/**
419 * enum batadv_counters - indices for traffic counters
420 * @BATADV_CNT_TX: transmitted payload traffic packet counter
421 * @BATADV_CNT_TX_BYTES: transmitted payload traffic bytes counter
422 * @BATADV_CNT_TX_DROPPED: dropped transmission payload traffic packet counter
423 * @BATADV_CNT_RX: received payload traffic packet counter
424 * @BATADV_CNT_RX_BYTES: received payload traffic bytes counter
425 * @BATADV_CNT_FORWARD: forwarded payload traffic packet counter
426 * @BATADV_CNT_FORWARD_BYTES: forwarded payload traffic bytes counter
427 * @BATADV_CNT_MGMT_TX: transmitted routing protocol traffic packet counter
428 * @BATADV_CNT_MGMT_TX_BYTES: transmitted routing protocol traffic bytes counter
429 * @BATADV_CNT_MGMT_RX: received routing protocol traffic packet counter
430 * @BATADV_CNT_MGMT_RX_BYTES: received routing protocol traffic bytes counter
Martin Hundebøllee75ed82013-05-23 16:53:03 +0200431 * @BATADV_CNT_FRAG_TX: transmitted fragment traffic packet counter
432 * @BATADV_CNT_FRAG_TX_BYTES: transmitted fragment traffic bytes counter
Martin Hundebøll610bfc6bc2013-05-23 16:53:02 +0200433 * @BATADV_CNT_FRAG_RX: received fragment traffic packet counter
434 * @BATADV_CNT_FRAG_RX_BYTES: received fragment traffic bytes counter
435 * @BATADV_CNT_FRAG_FWD: forwarded fragment traffic packet counter
436 * @BATADV_CNT_FRAG_FWD_BYTES: forwarded fragment traffic bytes counter
Marek Lindner88a32c92012-12-25 21:45:12 +0800437 * @BATADV_CNT_TT_REQUEST_TX: transmitted tt req traffic packet counter
438 * @BATADV_CNT_TT_REQUEST_RX: received tt req traffic packet counter
439 * @BATADV_CNT_TT_RESPONSE_TX: transmitted tt resp traffic packet counter
440 * @BATADV_CNT_TT_RESPONSE_RX: received tt resp traffic packet counter
441 * @BATADV_CNT_TT_ROAM_ADV_TX: transmitted tt roam traffic packet counter
442 * @BATADV_CNT_TT_ROAM_ADV_RX: received tt roam traffic packet counter
443 * @BATADV_CNT_DAT_GET_TX: transmitted dht GET traffic packet counter
444 * @BATADV_CNT_DAT_GET_RX: received dht GET traffic packet counter
445 * @BATADV_CNT_DAT_PUT_TX: transmitted dht PUT traffic packet counter
446 * @BATADV_CNT_DAT_PUT_RX: received dht PUT traffic packet counter
447 * @BATADV_CNT_DAT_CACHED_REPLY_TX: transmitted dat cache reply traffic packet
448 * counter
Martin Hundebøll3c12de92013-01-25 11:12:41 +0100449 * @BATADV_CNT_NC_CODE: transmitted nc-combined traffic packet counter
450 * @BATADV_CNT_NC_CODE_BYTES: transmitted nc-combined traffic bytes counter
451 * @BATADV_CNT_NC_RECODE: transmitted nc-recombined traffic packet counter
452 * @BATADV_CNT_NC_RECODE_BYTES: transmitted nc-recombined traffic bytes counter
Martin Hundebøll612d2b42013-01-25 11:12:42 +0100453 * @BATADV_CNT_NC_BUFFER: counter for packets buffered for later nc decoding
Martin Hundebøll2df52782013-01-25 11:12:43 +0100454 * @BATADV_CNT_NC_DECODE: received and nc-decoded traffic packet counter
455 * @BATADV_CNT_NC_DECODE_BYTES: received and nc-decoded traffic bytes counter
456 * @BATADV_CNT_NC_DECODE_FAILED: received and decode-failed traffic packet
457 * counter
458 * @BATADV_CNT_NC_SNIFFED: counter for nc-decoded packets received in promisc
459 * mode.
Marek Lindner88a32c92012-12-25 21:45:12 +0800460 * @BATADV_CNT_NUM: number of traffic counters
461 */
Sven Eckelmannd69909d2012-06-03 22:19:20 +0200462enum batadv_counters {
Marek Lindner1c9b0552012-06-23 11:47:53 +0200463 BATADV_CNT_TX,
464 BATADV_CNT_TX_BYTES,
465 BATADV_CNT_TX_DROPPED,
466 BATADV_CNT_RX,
467 BATADV_CNT_RX_BYTES,
Sven Eckelmannd69909d2012-06-03 22:19:20 +0200468 BATADV_CNT_FORWARD,
469 BATADV_CNT_FORWARD_BYTES,
470 BATADV_CNT_MGMT_TX,
471 BATADV_CNT_MGMT_TX_BYTES,
472 BATADV_CNT_MGMT_RX,
473 BATADV_CNT_MGMT_RX_BYTES,
Martin Hundebøllee75ed82013-05-23 16:53:03 +0200474 BATADV_CNT_FRAG_TX,
475 BATADV_CNT_FRAG_TX_BYTES,
Martin Hundebøll610bfc6bc2013-05-23 16:53:02 +0200476 BATADV_CNT_FRAG_RX,
477 BATADV_CNT_FRAG_RX_BYTES,
478 BATADV_CNT_FRAG_FWD,
479 BATADV_CNT_FRAG_FWD_BYTES,
Sven Eckelmannd69909d2012-06-03 22:19:20 +0200480 BATADV_CNT_TT_REQUEST_TX,
481 BATADV_CNT_TT_REQUEST_RX,
482 BATADV_CNT_TT_RESPONSE_TX,
483 BATADV_CNT_TT_RESPONSE_RX,
484 BATADV_CNT_TT_ROAM_ADV_TX,
485 BATADV_CNT_TT_ROAM_ADV_RX,
Martin Hundebøll4046b242012-04-20 17:02:45 +0200486#ifdef CONFIG_BATMAN_ADV_DAT
487 BATADV_CNT_DAT_GET_TX,
488 BATADV_CNT_DAT_GET_RX,
489 BATADV_CNT_DAT_PUT_TX,
490 BATADV_CNT_DAT_PUT_RX,
491 BATADV_CNT_DAT_CACHED_REPLY_TX,
492#endif
Martin Hundebøll3c12de92013-01-25 11:12:41 +0100493#ifdef CONFIG_BATMAN_ADV_NC
494 BATADV_CNT_NC_CODE,
495 BATADV_CNT_NC_CODE_BYTES,
496 BATADV_CNT_NC_RECODE,
497 BATADV_CNT_NC_RECODE_BYTES,
Martin Hundebøll612d2b42013-01-25 11:12:42 +0100498 BATADV_CNT_NC_BUFFER,
Martin Hundebøll2df52782013-01-25 11:12:43 +0100499 BATADV_CNT_NC_DECODE,
500 BATADV_CNT_NC_DECODE_BYTES,
501 BATADV_CNT_NC_DECODE_FAILED,
502 BATADV_CNT_NC_SNIFFED,
Martin Hundebøll3c12de92013-01-25 11:12:41 +0100503#endif
Sven Eckelmannd69909d2012-06-03 22:19:20 +0200504 BATADV_CNT_NUM,
Martin Hundebøllf8214862012-04-20 17:02:45 +0200505};
506
Sven Eckelmann807736f2012-07-15 22:26:51 +0200507/**
508 * struct batadv_priv_tt - per mesh interface translation table data
509 * @vn: translation table version number
Marek Lindner88a32c92012-12-25 21:45:12 +0800510 * @ogm_append_cnt: counter of number of OGMs containing the local tt diff
Sven Eckelmann807736f2012-07-15 22:26:51 +0200511 * @local_changes: changes registered in an originator interval
Sven Eckelmann807736f2012-07-15 22:26:51 +0200512 * @changes_list: tracks tt local changes within an originator interval
Marek Lindner88a32c92012-12-25 21:45:12 +0800513 * @local_hash: local translation table hash table
514 * @global_hash: global translation table hash table
515 * @req_list: list of pending & unanswered tt_requests
516 * @roam_list: list of the last roaming events of each client limiting the
517 * number of roaming events to avoid route flapping
518 * @changes_list_lock: lock protecting changes_list
519 * @req_list_lock: lock protecting req_list
520 * @roam_list_lock: lock protecting roam_list
Marek Lindner88a32c92012-12-25 21:45:12 +0800521 * @last_changeset: last tt changeset this host has generated
522 * @last_changeset_len: length of last tt changeset this host has generated
523 * @last_changeset_lock: lock protecting last_changeset & last_changeset_len
Antonio Quartullia70a9aa2013-07-30 22:16:24 +0200524 * @commit_lock: prevents from executing a local TT commit while reading the
525 * local table. The local TT commit is made up by two operations (data
526 * structure update and metdata -CRC/TTVN- recalculation) and they have to be
527 * executed atomically in order to avoid another thread to read the
528 * table/metadata between those.
Marek Lindner88a32c92012-12-25 21:45:12 +0800529 * @work: work queue callback item for translation table purging
Sven Eckelmann807736f2012-07-15 22:26:51 +0200530 */
531struct batadv_priv_tt {
532 atomic_t vn;
533 atomic_t ogm_append_cnt;
534 atomic_t local_changes;
Sven Eckelmann807736f2012-07-15 22:26:51 +0200535 struct list_head changes_list;
536 struct batadv_hashtable *local_hash;
537 struct batadv_hashtable *global_hash;
Marek Lindner7c26a532015-06-28 22:16:06 +0800538 struct hlist_head req_list;
Sven Eckelmann807736f2012-07-15 22:26:51 +0200539 struct list_head roam_list;
540 spinlock_t changes_list_lock; /* protects changes */
541 spinlock_t req_list_lock; /* protects req_list */
542 spinlock_t roam_list_lock; /* protects roam_list */
Sven Eckelmann807736f2012-07-15 22:26:51 +0200543 unsigned char *last_changeset;
Sven Eckelmann6b5e9712015-05-26 18:34:26 +0200544 s16 last_changeset_len;
Marek Lindner88a32c92012-12-25 21:45:12 +0800545 /* protects last_changeset & last_changeset_len */
546 spinlock_t last_changeset_lock;
Antonio Quartullia70a9aa2013-07-30 22:16:24 +0200547 /* prevents from executing a commit while reading the table */
548 spinlock_t commit_lock;
Sven Eckelmann807736f2012-07-15 22:26:51 +0200549 struct delayed_work work;
550};
551
Marek Lindner88a32c92012-12-25 21:45:12 +0800552/**
553 * struct batadv_priv_bla - per mesh interface bridge loope avoidance data
554 * @num_requests; number of bla requests in flight
555 * @claim_hash: hash table containing mesh nodes this host has claimed
556 * @backbone_hash: hash table containing all detected backbone gateways
557 * @bcast_duplist: recently received broadcast packets array (for broadcast
558 * duplicate suppression)
559 * @bcast_duplist_curr: index of last broadcast packet added to bcast_duplist
560 * @bcast_duplist_lock: lock protecting bcast_duplist & bcast_duplist_curr
561 * @claim_dest: local claim data (e.g. claim group)
562 * @work: work queue callback item for cleanups & bla announcements
563 */
Sven Eckelmann807736f2012-07-15 22:26:51 +0200564#ifdef CONFIG_BATMAN_ADV_BLA
565struct batadv_priv_bla {
Marek Lindner88a32c92012-12-25 21:45:12 +0800566 atomic_t num_requests;
Sven Eckelmann807736f2012-07-15 22:26:51 +0200567 struct batadv_hashtable *claim_hash;
568 struct batadv_hashtable *backbone_hash;
569 struct batadv_bcast_duplist_entry bcast_duplist[BATADV_DUPLIST_SIZE];
570 int bcast_duplist_curr;
Marek Lindner88a32c92012-12-25 21:45:12 +0800571 /* protects bcast_duplist & bcast_duplist_curr */
Linus Lüssing7dac7b72012-10-17 14:53:05 +0200572 spinlock_t bcast_duplist_lock;
Sven Eckelmann807736f2012-07-15 22:26:51 +0200573 struct batadv_bla_claim_dst claim_dest;
574 struct delayed_work work;
575};
576#endif
577
Marek Lindner88a32c92012-12-25 21:45:12 +0800578/**
Simon Wunderlich1a321b02014-01-24 22:16:25 +0100579 * struct batadv_priv_debug_log - debug logging data
Marek Lindner88a32c92012-12-25 21:45:12 +0800580 * @log_buff: buffer holding the logs (ring bufer)
581 * @log_start: index of next character to read
582 * @log_end: index of next character to write
583 * @lock: lock protecting log_buff, log_start & log_end
584 * @queue_wait: log reader's wait queue
585 */
Marek Lindner0abf5d82012-12-25 17:03:20 +0800586#ifdef CONFIG_BATMAN_ADV_DEBUG
587struct batadv_priv_debug_log {
588 char log_buff[BATADV_LOG_BUF_LEN];
589 unsigned long log_start;
590 unsigned long log_end;
591 spinlock_t lock; /* protects log_buff, log_start and log_end */
592 wait_queue_head_t queue_wait;
593};
594#endif
595
Marek Lindner88a32c92012-12-25 21:45:12 +0800596/**
597 * struct batadv_priv_gw - per mesh interface gateway data
598 * @list: list of available gateway nodes
599 * @list_lock: lock protecting gw_list & curr_gw
600 * @curr_gw: pointer to currently selected gateway node
Marek Lindner414254e2013-04-23 21:39:58 +0800601 * @bandwidth_down: advertised uplink download bandwidth (if gw_mode server)
602 * @bandwidth_up: advertised uplink upload bandwidth (if gw_mode server)
Marek Lindner88a32c92012-12-25 21:45:12 +0800603 * @reselect: bool indicating a gateway re-selection is in progress
604 */
Sven Eckelmann807736f2012-07-15 22:26:51 +0200605struct batadv_priv_gw {
606 struct hlist_head list;
Marek Lindner88a32c92012-12-25 21:45:12 +0800607 spinlock_t list_lock; /* protects gw_list & curr_gw */
Sven Eckelmann807736f2012-07-15 22:26:51 +0200608 struct batadv_gw_node __rcu *curr_gw; /* rcu protected pointer */
Marek Lindner414254e2013-04-23 21:39:58 +0800609 atomic_t bandwidth_down;
610 atomic_t bandwidth_up;
Sven Eckelmann807736f2012-07-15 22:26:51 +0200611 atomic_t reselect;
612};
613
Marek Lindner88a32c92012-12-25 21:45:12 +0800614/**
Marek Lindneref261572013-04-23 21:39:57 +0800615 * struct batadv_priv_tvlv - per mesh interface tvlv data
616 * @container_list: list of registered tvlv containers to be sent with each OGM
617 * @handler_list: list of the various tvlv content handlers
618 * @container_list_lock: protects tvlv container list access
619 * @handler_list_lock: protects handler list access
620 */
621struct batadv_priv_tvlv {
622 struct hlist_head container_list;
623 struct hlist_head handler_list;
624 spinlock_t container_list_lock; /* protects container_list */
625 spinlock_t handler_list_lock; /* protects handler_list */
626};
627
628/**
Antonio Quartulli785ea112011-11-23 11:35:44 +0100629 * struct batadv_priv_dat - per mesh interface DAT private data
630 * @addr: node DAT address
Antonio Quartulli2f1dfbe2012-06-30 20:01:19 +0200631 * @hash: hashtable representing the local ARP cache
632 * @work: work queue callback item for cache purging
Antonio Quartulli785ea112011-11-23 11:35:44 +0100633 */
Antonio Quartulli17224472011-11-06 12:23:55 +0100634#ifdef CONFIG_BATMAN_ADV_DAT
Antonio Quartulli785ea112011-11-23 11:35:44 +0100635struct batadv_priv_dat {
636 batadv_dat_addr_t addr;
Antonio Quartulli2f1dfbe2012-06-30 20:01:19 +0200637 struct batadv_hashtable *hash;
638 struct delayed_work work;
Antonio Quartulli785ea112011-11-23 11:35:44 +0100639};
Antonio Quartulli17224472011-11-06 12:23:55 +0100640#endif
Antonio Quartulli785ea112011-11-23 11:35:44 +0100641
Linus Lüssingc5caf4e2014-02-15 17:47:49 +0100642#ifdef CONFIG_BATMAN_ADV_MCAST
643/**
644 * struct batadv_priv_mcast - per mesh interface mcast data
645 * @mla_list: list of multicast addresses we are currently announcing via TT
Linus Lüssingab498862014-02-15 17:47:53 +0100646 * @want_all_unsnoopables_list: a list of orig_nodes wanting all unsnoopable
647 * multicast traffic
Linus Lüssing4c8755d2014-02-15 17:47:54 +0100648 * @want_all_ipv4_list: a list of orig_nodes wanting all IPv4 multicast traffic
649 * @want_all_ipv6_list: a list of orig_nodes wanting all IPv6 multicast traffic
Linus Lüssing60432d72014-02-15 17:47:51 +0100650 * @flags: the flags we have last sent in our mcast tvlv
651 * @enabled: whether the multicast tvlv is currently enabled
652 * @num_disabled: number of nodes that have no mcast tvlv
Linus Lüssingab498862014-02-15 17:47:53 +0100653 * @num_want_all_unsnoopables: number of nodes wanting unsnoopable IP traffic
Linus Lüssing4c8755d2014-02-15 17:47:54 +0100654 * @num_want_all_ipv4: counter for items in want_all_ipv4_list
655 * @num_want_all_ipv6: counter for items in want_all_ipv6_list
Linus Lüssingab498862014-02-15 17:47:53 +0100656 * @want_lists_lock: lock for protecting modifications to mcast want lists
657 * (traversals are rcu-locked)
Linus Lüssingc5caf4e2014-02-15 17:47:49 +0100658 */
659struct batadv_priv_mcast {
660 struct hlist_head mla_list;
Linus Lüssingab498862014-02-15 17:47:53 +0100661 struct hlist_head want_all_unsnoopables_list;
Linus Lüssing4c8755d2014-02-15 17:47:54 +0100662 struct hlist_head want_all_ipv4_list;
663 struct hlist_head want_all_ipv6_list;
Sven Eckelmann6b5e9712015-05-26 18:34:26 +0200664 u8 flags;
Linus Lüssing60432d72014-02-15 17:47:51 +0100665 bool enabled;
666 atomic_t num_disabled;
Linus Lüssingab498862014-02-15 17:47:53 +0100667 atomic_t num_want_all_unsnoopables;
Linus Lüssing4c8755d2014-02-15 17:47:54 +0100668 atomic_t num_want_all_ipv4;
669 atomic_t num_want_all_ipv6;
670 /* protects want_all_{unsnoopables,ipv4,ipv6}_list */
Linus Lüssingab498862014-02-15 17:47:53 +0100671 spinlock_t want_lists_lock;
Linus Lüssingc5caf4e2014-02-15 17:47:49 +0100672};
673#endif
674
Marek Lindner88a32c92012-12-25 21:45:12 +0800675/**
Martin Hundebølld353d8d2013-01-25 11:12:38 +0100676 * struct batadv_priv_nc - per mesh interface network coding private data
677 * @work: work queue callback item for cleanup
Martin Hundebølld56b1702013-01-25 11:12:39 +0100678 * @debug_dir: dentry for nc subdir in batman-adv directory in debugfs
679 * @min_tq: only consider neighbors for encoding if neigh_tq > min_tq
Martin Hundebøll95332472013-01-25 11:12:40 +0100680 * @max_fwd_delay: maximum packet forward delay to allow coding of packets
Martin Hundebøll612d2b42013-01-25 11:12:42 +0100681 * @max_buffer_time: buffer time for sniffed packets used to decoding
Martin Hundebøll95332472013-01-25 11:12:40 +0100682 * @timestamp_fwd_flush: timestamp of last forward packet queue flush
Martin Hundebøll612d2b42013-01-25 11:12:42 +0100683 * @timestamp_sniffed_purge: timestamp of last sniffed packet queue purge
Martin Hundebøll95332472013-01-25 11:12:40 +0100684 * @coding_hash: Hash table used to buffer skbs while waiting for another
685 * incoming skb to code it with. Skbs are added to the buffer just before being
686 * forwarded in routing.c
Martin Hundebøll612d2b42013-01-25 11:12:42 +0100687 * @decoding_hash: Hash table used to buffer skbs that might be needed to decode
688 * a received coded skb. The buffer is used for 1) skbs arriving on the
689 * soft-interface; 2) skbs overheard on the hard-interface; and 3) skbs
690 * forwarded by batman-adv.
Martin Hundebølld353d8d2013-01-25 11:12:38 +0100691 */
692struct batadv_priv_nc {
693 struct delayed_work work;
Martin Hundebølld56b1702013-01-25 11:12:39 +0100694 struct dentry *debug_dir;
695 u8 min_tq;
Martin Hundebøll95332472013-01-25 11:12:40 +0100696 u32 max_fwd_delay;
Martin Hundebøll612d2b42013-01-25 11:12:42 +0100697 u32 max_buffer_time;
Martin Hundebøll95332472013-01-25 11:12:40 +0100698 unsigned long timestamp_fwd_flush;
Martin Hundebøll612d2b42013-01-25 11:12:42 +0100699 unsigned long timestamp_sniffed_purge;
Martin Hundebøll95332472013-01-25 11:12:40 +0100700 struct batadv_hashtable *coding_hash;
Martin Hundebøll612d2b42013-01-25 11:12:42 +0100701 struct batadv_hashtable *decoding_hash;
Martin Hundebølld353d8d2013-01-25 11:12:38 +0100702};
703
704/**
Antonio Quartulli5d2c05b2013-07-02 11:04:34 +0200705 * struct batadv_softif_vlan - per VLAN attributes set
Antonio Quartulli35df3b22014-05-08 17:13:15 +0200706 * @bat_priv: pointer to the mesh object
Antonio Quartulli5d2c05b2013-07-02 11:04:34 +0200707 * @vid: VLAN identifier
708 * @kobj: kobject for sysfs vlan subdirectory
Antonio Quartullib8cbd812013-07-02 11:04:36 +0200709 * @ap_isolation: AP isolation state
Antonio Quartulli7ea7b4a2013-07-30 22:16:25 +0200710 * @tt: TT private attributes (VLAN specific)
Antonio Quartulli5d2c05b2013-07-02 11:04:34 +0200711 * @list: list node for bat_priv::softif_vlan_list
712 * @refcount: number of context where this object is currently in use
713 * @rcu: struct used for freeing in a RCU-safe manner
714 */
715struct batadv_softif_vlan {
Antonio Quartulli35df3b22014-05-08 17:13:15 +0200716 struct batadv_priv *bat_priv;
Antonio Quartulli5d2c05b2013-07-02 11:04:34 +0200717 unsigned short vid;
718 struct kobject *kobj;
Antonio Quartullib8cbd812013-07-02 11:04:36 +0200719 atomic_t ap_isolation; /* boolean */
Antonio Quartulli7ea7b4a2013-07-30 22:16:25 +0200720 struct batadv_vlan_tt tt;
Antonio Quartulli5d2c05b2013-07-02 11:04:34 +0200721 struct hlist_node list;
722 atomic_t refcount;
723 struct rcu_head rcu;
724};
725
726/**
Marek Lindner88a32c92012-12-25 21:45:12 +0800727 * struct batadv_priv - per mesh interface data
728 * @mesh_state: current status of the mesh (inactive/active/deactivating)
Simon Wunderlich5bc44dc2013-01-11 10:19:51 +0100729 * @soft_iface: net device which holds this struct as private data
Marek Lindner88a32c92012-12-25 21:45:12 +0800730 * @stats: structure holding the data for the ndo_get_stats() call
731 * @bat_counters: mesh internal traffic statistic counters (see batadv_counters)
732 * @aggregated_ogms: bool indicating whether OGM aggregation is enabled
733 * @bonding: bool indicating whether traffic bonding is enabled
734 * @fragmentation: bool indicating whether traffic fragmentation is enabled
Marek Lindnera19d3d82013-05-27 15:33:25 +0800735 * @packet_size_max: max packet size that can be transmitted via
736 * multiple fragmented skbs or a single frame if fragmentation is disabled
Martin Hundebøllee75ed82013-05-23 16:53:03 +0200737 * @frag_seqno: incremental counter to identify chains of egress fragments
Marek Lindner88a32c92012-12-25 21:45:12 +0800738 * @bridge_loop_avoidance: bool indicating whether bridge loop avoidance is
739 * enabled
740 * @distributed_arp_table: bool indicating whether distributed ARP table is
741 * enabled
Linus Lüssing1d8ab8d2014-02-15 17:47:52 +0100742 * @multicast_mode: Enable or disable multicast optimizations on this node's
743 * sender/originating side
Marek Lindner88a32c92012-12-25 21:45:12 +0800744 * @gw_mode: gateway operation: off, client or server (see batadv_gw_modes)
745 * @gw_sel_class: gateway selection class (applies if gw_mode client)
Marek Lindner88a32c92012-12-25 21:45:12 +0800746 * @orig_interval: OGM broadcast interval in milliseconds
747 * @hop_penalty: penalty which will be applied to an OGM's tq-field on every hop
748 * @log_level: configured log level (see batadv_dbg_level)
749 * @bcast_seqno: last sent broadcast packet sequence number
750 * @bcast_queue_left: number of remaining buffered broadcast packet slots
751 * @batman_queue_left: number of remaining OGM packet slots
752 * @num_ifaces: number of interfaces assigned to this mesh interface
753 * @mesh_obj: kobject for sysfs mesh subdirectory
754 * @debug_dir: dentry for debugfs batman-adv subdirectory
755 * @forw_bat_list: list of aggregated OGMs that will be forwarded
756 * @forw_bcast_list: list of broadcast packets that will be rebroadcasted
757 * @orig_hash: hash table containing mesh participants (orig nodes)
758 * @forw_bat_list_lock: lock protecting forw_bat_list
759 * @forw_bcast_list_lock: lock protecting forw_bcast_list
760 * @orig_work: work queue callback item for orig node purging
Simon Wunderlich5bc44dc2013-01-11 10:19:51 +0100761 * @cleanup_work: work queue callback item for soft interface deinit
Marek Lindner88a32c92012-12-25 21:45:12 +0800762 * @primary_if: one of the hard interfaces assigned to this mesh interface
763 * becomes the primary interface
764 * @bat_algo_ops: routing algorithm used by this mesh interface
Antonio Quartulli5d2c05b2013-07-02 11:04:34 +0200765 * @softif_vlan_list: a list of softif_vlan structs, one per VLAN created on top
766 * of the mesh interface represented by this object
767 * @softif_vlan_list_lock: lock protecting softif_vlan_list
Marek Lindner88a32c92012-12-25 21:45:12 +0800768 * @bla: bridge loope avoidance data
769 * @debug_log: holding debug logging relevant data
770 * @gw: gateway data
771 * @tt: translation table data
Marek Lindneref261572013-04-23 21:39:57 +0800772 * @tvlv: type-version-length-value data
Marek Lindner88a32c92012-12-25 21:45:12 +0800773 * @dat: distributed arp table data
Linus Lüssingc5caf4e2014-02-15 17:47:49 +0100774 * @mcast: multicast data
Martin Hundebølld353d8d2013-01-25 11:12:38 +0100775 * @network_coding: bool indicating whether network coding is enabled
776 * @batadv_priv_nc: network coding data
Marek Lindner88a32c92012-12-25 21:45:12 +0800777 */
Sven Eckelmann56303d32012-06-05 22:31:31 +0200778struct batadv_priv {
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000779 atomic_t mesh_state;
Simon Wunderlich5bc44dc2013-01-11 10:19:51 +0100780 struct net_device *soft_iface;
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000781 struct net_device_stats stats;
Sven Eckelmann6b5e9712015-05-26 18:34:26 +0200782 u64 __percpu *bat_counters; /* Per cpu counters */
Marek Lindner88a32c92012-12-25 21:45:12 +0800783 atomic_t aggregated_ogms;
784 atomic_t bonding;
785 atomic_t fragmentation;
Marek Lindnera19d3d82013-05-27 15:33:25 +0800786 atomic_t packet_size_max;
Martin Hundebøllee75ed82013-05-23 16:53:03 +0200787 atomic_t frag_seqno;
Antonio Quartullifa706552012-11-26 01:27:29 +0100788#ifdef CONFIG_BATMAN_ADV_BLA
Marek Lindner88a32c92012-12-25 21:45:12 +0800789 atomic_t bridge_loop_avoidance;
Antonio Quartullifa706552012-11-26 01:27:29 +0100790#endif
Antonio Quartulli33af49a2012-08-08 18:50:57 +0200791#ifdef CONFIG_BATMAN_ADV_DAT
Marek Lindner88a32c92012-12-25 21:45:12 +0800792 atomic_t distributed_arp_table;
Antonio Quartulli33af49a2012-08-08 18:50:57 +0200793#endif
Linus Lüssing1d8ab8d2014-02-15 17:47:52 +0100794#ifdef CONFIG_BATMAN_ADV_MCAST
795 atomic_t multicast_mode;
796#endif
Marek Lindner88a32c92012-12-25 21:45:12 +0800797 atomic_t gw_mode;
798 atomic_t gw_sel_class;
Marek Lindner88a32c92012-12-25 21:45:12 +0800799 atomic_t orig_interval;
800 atomic_t hop_penalty;
Marek Lindner0c430d02012-12-16 13:53:15 +0800801#ifdef CONFIG_BATMAN_ADV_DEBUG
Marek Lindner88a32c92012-12-25 21:45:12 +0800802 atomic_t log_level;
Marek Lindner0c430d02012-12-16 13:53:15 +0800803#endif
Sven Eckelmann6b5e9712015-05-26 18:34:26 +0200804 u32 isolation_mark;
805 u32 isolation_mark_mask;
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000806 atomic_t bcast_seqno;
807 atomic_t bcast_queue_left;
808 atomic_t batman_queue_left;
809 char num_ifaces;
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000810 struct kobject *mesh_obj;
811 struct dentry *debug_dir;
812 struct hlist_head forw_bat_list;
813 struct hlist_head forw_bcast_list;
Sven Eckelmann5bf74e92012-06-05 22:31:28 +0200814 struct batadv_hashtable *orig_hash;
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000815 spinlock_t forw_bat_list_lock; /* protects forw_bat_list */
Antonio Quartullia7528f82012-09-02 19:00:38 +0200816 spinlock_t forw_bcast_list_lock; /* protects forw_bcast_list */
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000817 struct delayed_work orig_work;
Simon Wunderlich5bc44dc2013-01-11 10:19:51 +0100818 struct work_struct cleanup_work;
Sven Eckelmann56303d32012-06-05 22:31:31 +0200819 struct batadv_hard_iface __rcu *primary_if; /* rcu protected pointer */
Sven Eckelmann56303d32012-06-05 22:31:31 +0200820 struct batadv_algo_ops *bat_algo_ops;
Antonio Quartulli5d2c05b2013-07-02 11:04:34 +0200821 struct hlist_head softif_vlan_list;
822 spinlock_t softif_vlan_list_lock; /* protects softif_vlan_list */
Sven Eckelmann807736f2012-07-15 22:26:51 +0200823#ifdef CONFIG_BATMAN_ADV_BLA
824 struct batadv_priv_bla bla;
825#endif
Marek Lindner0abf5d82012-12-25 17:03:20 +0800826#ifdef CONFIG_BATMAN_ADV_DEBUG
827 struct batadv_priv_debug_log *debug_log;
828#endif
Sven Eckelmann807736f2012-07-15 22:26:51 +0200829 struct batadv_priv_gw gw;
830 struct batadv_priv_tt tt;
Marek Lindneref261572013-04-23 21:39:57 +0800831 struct batadv_priv_tvlv tvlv;
Antonio Quartulli17224472011-11-06 12:23:55 +0100832#ifdef CONFIG_BATMAN_ADV_DAT
Antonio Quartulli785ea112011-11-23 11:35:44 +0100833 struct batadv_priv_dat dat;
Antonio Quartulli17224472011-11-06 12:23:55 +0100834#endif
Linus Lüssingc5caf4e2014-02-15 17:47:49 +0100835#ifdef CONFIG_BATMAN_ADV_MCAST
836 struct batadv_priv_mcast mcast;
837#endif
Martin Hundebølld353d8d2013-01-25 11:12:38 +0100838#ifdef CONFIG_BATMAN_ADV_NC
839 atomic_t network_coding;
840 struct batadv_priv_nc nc;
841#endif /* CONFIG_BATMAN_ADV_NC */
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000842};
843
Marek Lindner88a32c92012-12-25 21:45:12 +0800844/**
845 * struct batadv_socket_client - layer2 icmp socket client data
846 * @queue_list: packet queue for packets destined for this socket client
847 * @queue_len: number of packets in the packet queue (queue_list)
848 * @index: socket client's index in the batadv_socket_client_hash
849 * @lock: lock protecting queue_list, queue_len & index
850 * @queue_wait: socket client's wait queue
851 * @bat_priv: pointer to soft_iface this client belongs to
852 */
Sven Eckelmann56303d32012-06-05 22:31:31 +0200853struct batadv_socket_client {
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000854 struct list_head queue_list;
855 unsigned int queue_len;
856 unsigned char index;
Marek Lindner88a32c92012-12-25 21:45:12 +0800857 spinlock_t lock; /* protects queue_list, queue_len & index */
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000858 wait_queue_head_t queue_wait;
Sven Eckelmann56303d32012-06-05 22:31:31 +0200859 struct batadv_priv *bat_priv;
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000860};
861
Marek Lindner88a32c92012-12-25 21:45:12 +0800862/**
863 * struct batadv_socket_packet - layer2 icmp packet for socket client
864 * @list: list node for batadv_socket_client::queue_list
865 * @icmp_len: size of the layer2 icmp packet
866 * @icmp_packet: layer2 icmp packet
867 */
Sven Eckelmann56303d32012-06-05 22:31:31 +0200868struct batadv_socket_packet {
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000869 struct list_head list;
870 size_t icmp_len;
Sven Eckelmann6b5e9712015-05-26 18:34:26 +0200871 u8 icmp_packet[BATADV_ICMP_MAX_PACKET_SIZE];
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000872};
873
Marek Lindner88a32c92012-12-25 21:45:12 +0800874/**
875 * struct batadv_bla_backbone_gw - batman-adv gateway bridged into the LAN
876 * @orig: originator address of backbone node (mac address of primary iface)
877 * @vid: vlan id this gateway was detected on
878 * @hash_entry: hlist node for batadv_priv_bla::backbone_hash
879 * @bat_priv: pointer to soft_iface this backbone gateway belongs to
880 * @lasttime: last time we heard of this backbone gw
881 * @wait_periods: grace time for bridge forward delays and bla group forming at
882 * bootup phase - no bcast traffic is formwared until it has elapsed
883 * @request_sent: if this bool is set to true we are out of sync with this
884 * backbone gateway - no bcast traffic is formwared until the situation was
885 * resolved
886 * @crc: crc16 checksum over all claims
887 * @refcount: number of contexts the object is used
888 * @rcu: struct used for freeing in an RCU-safe manner
889 */
Marek Lindner2006fea2012-12-25 17:03:21 +0800890#ifdef CONFIG_BATMAN_ADV_BLA
Marek Lindnerbae98772012-12-25 17:03:24 +0800891struct batadv_bla_backbone_gw {
Sven Eckelmann6b5e9712015-05-26 18:34:26 +0200892 u8 orig[ETH_ALEN];
Antonio Quartullieb2deb62013-04-19 18:07:00 +0200893 unsigned short vid;
Marek Lindner2006fea2012-12-25 17:03:21 +0800894 struct hlist_node hash_entry;
895 struct batadv_priv *bat_priv;
Marek Lindner88a32c92012-12-25 21:45:12 +0800896 unsigned long lasttime;
Marek Lindner2006fea2012-12-25 17:03:21 +0800897 atomic_t wait_periods;
898 atomic_t request_sent;
Sven Eckelmann6b5e9712015-05-26 18:34:26 +0200899 u16 crc;
Marek Lindner2006fea2012-12-25 17:03:21 +0800900 atomic_t refcount;
901 struct rcu_head rcu;
Marek Lindner2006fea2012-12-25 17:03:21 +0800902};
903
Marek Lindner88a32c92012-12-25 21:45:12 +0800904/**
905 * struct batadv_bla_claim - claimed non-mesh client structure
906 * @addr: mac address of claimed non-mesh client
907 * @vid: vlan id this client was detected on
908 * @batadv_bla_backbone_gw: pointer to backbone gw claiming this client
909 * @lasttime: last time we heard of claim (locals only)
910 * @hash_entry: hlist node for batadv_priv_bla::claim_hash
911 * @refcount: number of contexts the object is used
912 * @rcu: struct used for freeing in an RCU-safe manner
913 */
Marek Lindner712bbfe42012-12-25 17:03:25 +0800914struct batadv_bla_claim {
Sven Eckelmann6b5e9712015-05-26 18:34:26 +0200915 u8 addr[ETH_ALEN];
Antonio Quartullieb2deb62013-04-19 18:07:00 +0200916 unsigned short vid;
Marek Lindnerbae98772012-12-25 17:03:24 +0800917 struct batadv_bla_backbone_gw *backbone_gw;
Marek Lindner88a32c92012-12-25 21:45:12 +0800918 unsigned long lasttime;
919 struct hlist_node hash_entry;
Marek Lindner2006fea2012-12-25 17:03:21 +0800920 struct rcu_head rcu;
921 atomic_t refcount;
Marek Lindner2006fea2012-12-25 17:03:21 +0800922};
923#endif
924
Marek Lindner88a32c92012-12-25 21:45:12 +0800925/**
926 * struct batadv_tt_common_entry - tt local & tt global common data
927 * @addr: mac address of non-mesh client
Antonio Quartullic018ad32013-06-04 12:11:39 +0200928 * @vid: VLAN identifier
Marek Lindner88a32c92012-12-25 21:45:12 +0800929 * @hash_entry: hlist node for batadv_priv_tt::local_hash or for
930 * batadv_priv_tt::global_hash
931 * @flags: various state handling flags (see batadv_tt_client_flags)
932 * @added_at: timestamp used for purging stale tt common entries
933 * @refcount: number of contexts the object is used
934 * @rcu: struct used for freeing in an RCU-safe manner
935 */
Sven Eckelmann56303d32012-06-05 22:31:31 +0200936struct batadv_tt_common_entry {
Sven Eckelmann6b5e9712015-05-26 18:34:26 +0200937 u8 addr[ETH_ALEN];
Antonio Quartullic018ad32013-06-04 12:11:39 +0200938 unsigned short vid;
Antonio Quartulli93840ac2011-10-22 00:55:39 +0200939 struct hlist_node hash_entry;
Sven Eckelmann6b5e9712015-05-26 18:34:26 +0200940 u16 flags;
Antonio Quartulli30cfd02b2012-07-05 23:38:29 +0200941 unsigned long added_at;
Antonio Quartulli7683fdc2011-04-27 14:28:07 +0200942 atomic_t refcount;
943 struct rcu_head rcu;
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000944};
945
Marek Lindner88a32c92012-12-25 21:45:12 +0800946/**
947 * struct batadv_tt_local_entry - translation table local entry data
948 * @common: general translation table data
949 * @last_seen: timestamp used for purging stale tt local entries
950 */
Sven Eckelmann56303d32012-06-05 22:31:31 +0200951struct batadv_tt_local_entry {
952 struct batadv_tt_common_entry common;
Antonio Quartulli48100ba2011-10-30 12:17:33 +0100953 unsigned long last_seen;
954};
955
Marek Lindner88a32c92012-12-25 21:45:12 +0800956/**
957 * struct batadv_tt_global_entry - translation table global entry data
958 * @common: general translation table data
959 * @orig_list: list of orig nodes announcing this non-mesh client
Linus Lüssing1d8ab8d2014-02-15 17:47:52 +0100960 * @orig_list_count: number of items in the orig_list
Marek Lindner88a32c92012-12-25 21:45:12 +0800961 * @list_lock: lock protecting orig_list
962 * @roam_at: time at which TT_GLOBAL_ROAM was set
963 */
Sven Eckelmann56303d32012-06-05 22:31:31 +0200964struct batadv_tt_global_entry {
965 struct batadv_tt_common_entry common;
Simon Wunderlichdb08e6e2011-10-22 20:12:51 +0200966 struct hlist_head orig_list;
Linus Lüssing1d8ab8d2014-02-15 17:47:52 +0100967 atomic_t orig_list_count;
Marek Lindner88a32c92012-12-25 21:45:12 +0800968 spinlock_t list_lock; /* protects orig_list */
969 unsigned long roam_at;
Simon Wunderlichdb08e6e2011-10-22 20:12:51 +0200970};
971
Marek Lindner88a32c92012-12-25 21:45:12 +0800972/**
973 * struct batadv_tt_orig_list_entry - orig node announcing a non-mesh client
974 * @orig_node: pointer to orig node announcing this non-mesh client
975 * @ttvn: translation table version number which added the non-mesh client
976 * @list: list node for batadv_tt_global_entry::orig_list
977 * @refcount: number of contexts the object is used
978 * @rcu: struct used for freeing in an RCU-safe manner
979 */
Sven Eckelmann56303d32012-06-05 22:31:31 +0200980struct batadv_tt_orig_list_entry {
981 struct batadv_orig_node *orig_node;
Sven Eckelmann6b5e9712015-05-26 18:34:26 +0200982 u8 ttvn;
Marek Lindner88a32c92012-12-25 21:45:12 +0800983 struct hlist_node list;
Antonio Quartullid657e622012-07-01 14:09:12 +0200984 atomic_t refcount;
Simon Wunderlichdb08e6e2011-10-22 20:12:51 +0200985 struct rcu_head rcu;
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000986};
987
Marek Lindner88a32c92012-12-25 21:45:12 +0800988/**
Antonio Quartulli3f687852014-11-02 11:29:56 +0100989 * struct batadv_tt_change_node - structure for tt changes occurred
Marek Lindner88a32c92012-12-25 21:45:12 +0800990 * @list: list node for batadv_priv_tt::changes_list
991 * @change: holds the actual translation table diff data
992 */
Sven Eckelmann56303d32012-06-05 22:31:31 +0200993struct batadv_tt_change_node {
Antonio Quartullia73105b2011-04-27 14:27:44 +0200994 struct list_head list;
Marek Lindnere1bf0c12013-04-23 21:40:01 +0800995 struct batadv_tvlv_tt_change change;
Antonio Quartullia73105b2011-04-27 14:27:44 +0200996};
997
Marek Lindner88a32c92012-12-25 21:45:12 +0800998/**
999 * struct batadv_tt_req_node - data to keep track of the tt requests in flight
1000 * @addr: mac address address of the originator this request was sent to
1001 * @issued_at: timestamp used for purging stale tt requests
1002 * @list: list node for batadv_priv_tt::req_list
1003 */
Sven Eckelmann56303d32012-06-05 22:31:31 +02001004struct batadv_tt_req_node {
Sven Eckelmann6b5e9712015-05-26 18:34:26 +02001005 u8 addr[ETH_ALEN];
Antonio Quartullia73105b2011-04-27 14:27:44 +02001006 unsigned long issued_at;
Marek Lindner7c26a532015-06-28 22:16:06 +08001007 struct hlist_node list;
Antonio Quartullia73105b2011-04-27 14:27:44 +02001008};
1009
Marek Lindner88a32c92012-12-25 21:45:12 +08001010/**
1011 * struct batadv_tt_roam_node - roaming client data
1012 * @addr: mac address of the client in the roaming phase
1013 * @counter: number of allowed roaming events per client within a single
1014 * OGM interval (changes are committed with each OGM)
1015 * @first_time: timestamp used for purging stale roaming node entries
1016 * @list: list node for batadv_priv_tt::roam_list
1017 */
Sven Eckelmann56303d32012-06-05 22:31:31 +02001018struct batadv_tt_roam_node {
Sven Eckelmann6b5e9712015-05-26 18:34:26 +02001019 u8 addr[ETH_ALEN];
Antonio Quartullicc47f662011-04-27 14:27:57 +02001020 atomic_t counter;
1021 unsigned long first_time;
1022 struct list_head list;
1023};
1024
Marek Lindner88a32c92012-12-25 21:45:12 +08001025/**
Martin Hundebølld56b1702013-01-25 11:12:39 +01001026 * struct batadv_nc_node - network coding node
1027 * @list: next and prev pointer for the list handling
1028 * @addr: the node's mac address
1029 * @refcount: number of contexts the object is used by
1030 * @rcu: struct used for freeing in an RCU-safe manner
1031 * @orig_node: pointer to corresponding orig node struct
1032 * @last_seen: timestamp of last ogm received from this node
1033 */
1034struct batadv_nc_node {
1035 struct list_head list;
Sven Eckelmann6b5e9712015-05-26 18:34:26 +02001036 u8 addr[ETH_ALEN];
Martin Hundebølld56b1702013-01-25 11:12:39 +01001037 atomic_t refcount;
1038 struct rcu_head rcu;
1039 struct batadv_orig_node *orig_node;
1040 unsigned long last_seen;
1041};
1042
1043/**
Martin Hundebøll95332472013-01-25 11:12:40 +01001044 * struct batadv_nc_path - network coding path
1045 * @hash_entry: next and prev pointer for the list handling
1046 * @rcu: struct used for freeing in an RCU-safe manner
1047 * @refcount: number of contexts the object is used by
1048 * @packet_list: list of buffered packets for this path
1049 * @packet_list_lock: access lock for packet list
1050 * @next_hop: next hop (destination) of path
1051 * @prev_hop: previous hop (source) of path
1052 * @last_valid: timestamp for last validation of path
1053 */
1054struct batadv_nc_path {
1055 struct hlist_node hash_entry;
1056 struct rcu_head rcu;
1057 atomic_t refcount;
1058 struct list_head packet_list;
1059 spinlock_t packet_list_lock; /* Protects packet_list */
Sven Eckelmann6b5e9712015-05-26 18:34:26 +02001060 u8 next_hop[ETH_ALEN];
1061 u8 prev_hop[ETH_ALEN];
Martin Hundebøll95332472013-01-25 11:12:40 +01001062 unsigned long last_valid;
1063};
1064
1065/**
1066 * struct batadv_nc_packet - network coding packet used when coding and
1067 * decoding packets
1068 * @list: next and prev pointer for the list handling
1069 * @packet_id: crc32 checksum of skb data
1070 * @timestamp: field containing the info when the packet was added to path
1071 * @neigh_node: pointer to original next hop neighbor of skb
1072 * @skb: skb which can be encoded or used for decoding
1073 * @nc_path: pointer to path this nc packet is attached to
1074 */
1075struct batadv_nc_packet {
1076 struct list_head list;
1077 __be32 packet_id;
1078 unsigned long timestamp;
1079 struct batadv_neigh_node *neigh_node;
1080 struct sk_buff *skb;
1081 struct batadv_nc_path *nc_path;
1082};
1083
1084/**
Simon Wunderlich1a321b02014-01-24 22:16:25 +01001085 * struct batadv_skb_cb - control buffer structure used to store private data
1086 * relevant to batman-adv in the skb->cb buffer in skbs.
Martin Hundebøll3c12de92013-01-25 11:12:41 +01001087 * @decoded: Marks a skb as decoded, which is checked when searching for coding
1088 * opportunities in network-coding.c
1089 */
1090struct batadv_skb_cb {
1091 bool decoded;
1092};
1093
1094/**
Marek Lindner88a32c92012-12-25 21:45:12 +08001095 * struct batadv_forw_packet - structure for bcast packets to be sent/forwarded
1096 * @list: list node for batadv_socket_client::queue_list
1097 * @send_time: execution time for delayed_work (packet sending)
1098 * @own: bool for locally generated packets (local OGMs are re-scheduled after
1099 * sending)
1100 * @skb: bcast packet's skb buffer
1101 * @packet_len: size of aggregated OGM packet inside the skb buffer
1102 * @direct_link_flags: direct link flags for aggregated OGM packets
1103 * @num_packets: counter for bcast packet retransmission
1104 * @delayed_work: work queue callback item for packet sending
Simon Wunderlichef0a9372013-11-13 19:14:49 +01001105 * @if_incoming: pointer to incoming hard-iface or primary iface if
1106 * locally generated packet
1107 * @if_outgoing: packet where the packet should be sent to, or NULL if
1108 * unspecified
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +00001109 */
Sven Eckelmann56303d32012-06-05 22:31:31 +02001110struct batadv_forw_packet {
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +00001111 struct hlist_node list;
1112 unsigned long send_time;
Sven Eckelmann6b5e9712015-05-26 18:34:26 +02001113 u8 own;
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +00001114 struct sk_buff *skb;
Sven Eckelmann6b5e9712015-05-26 18:34:26 +02001115 u16 packet_len;
1116 u32 direct_link_flags;
1117 u8 num_packets;
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +00001118 struct delayed_work delayed_work;
Sven Eckelmann56303d32012-06-05 22:31:31 +02001119 struct batadv_hard_iface *if_incoming;
Simon Wunderlichef0a9372013-11-13 19:14:49 +01001120 struct batadv_hard_iface *if_outgoing;
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +00001121};
1122
Marek Lindner88a32c92012-12-25 21:45:12 +08001123/**
Marek Lindner88a32c92012-12-25 21:45:12 +08001124 * struct batadv_algo_ops - mesh algorithm callbacks
1125 * @list: list node for the batadv_algo_list
1126 * @name: name of the algorithm
1127 * @bat_iface_enable: init routing info when hard-interface is enabled
1128 * @bat_iface_disable: de-init routing info when hard-interface is disabled
1129 * @bat_iface_update_mac: (re-)init mac addresses of the protocol information
1130 * belonging to this hard-interface
1131 * @bat_primary_iface_set: called when primary interface is selected / changed
1132 * @bat_ogm_schedule: prepare a new outgoing OGM for the send queue
1133 * @bat_ogm_emit: send scheduled OGM
Simon Wunderlich89652332013-11-13 19:14:46 +01001134 * @bat_neigh_cmp: compare the metrics of two neighbors for their respective
1135 * outgoing interfaces
1136 * @bat_neigh_is_equiv_or_better: check if neigh1 is equally good or better
1137 * than neigh2 for their respective outgoing interface from the metric
1138 * prospective
Antonio Quartullibcef1f32015-03-01 00:50:17 +08001139 * @bat_neigh_free: free the resources allocated by the routing algorithm for a
1140 * neigh_node object
Antonio Quartulli737a2a222013-09-02 12:15:03 +02001141 * @bat_orig_print: print the originator table (optional)
Antonio Quartullid0015fd2013-09-03 11:10:23 +02001142 * @bat_orig_free: free the resources allocated by the routing algorithm for an
1143 * orig_node object
1144 * @bat_orig_add_if: ask the routing algorithm to apply the needed changes to
1145 * the orig_node due to a new hard-interface being added into the mesh
1146 * @bat_orig_del_if: ask the routing algorithm to apply the needed changes to
1147 * the orig_node due to an hard-interface being removed from the mesh
Marek Lindner88a32c92012-12-25 21:45:12 +08001148 */
Sven Eckelmann56303d32012-06-05 22:31:31 +02001149struct batadv_algo_ops {
Marek Lindner1c280472011-11-28 17:40:17 +08001150 struct hlist_node list;
1151 char *name;
Sven Eckelmann56303d32012-06-05 22:31:31 +02001152 int (*bat_iface_enable)(struct batadv_hard_iface *hard_iface);
Sven Eckelmann56303d32012-06-05 22:31:31 +02001153 void (*bat_iface_disable)(struct batadv_hard_iface *hard_iface);
Sven Eckelmann56303d32012-06-05 22:31:31 +02001154 void (*bat_iface_update_mac)(struct batadv_hard_iface *hard_iface);
Sven Eckelmann56303d32012-06-05 22:31:31 +02001155 void (*bat_primary_iface_set)(struct batadv_hard_iface *hard_iface);
Sven Eckelmann56303d32012-06-05 22:31:31 +02001156 void (*bat_ogm_schedule)(struct batadv_hard_iface *hard_iface);
Sven Eckelmann56303d32012-06-05 22:31:31 +02001157 void (*bat_ogm_emit)(struct batadv_forw_packet *forw_packet);
Antonio Quartullibcef1f32015-03-01 00:50:17 +08001158 /* neigh_node handling API */
Antonio Quartullia3285a82013-09-02 12:15:04 +02001159 int (*bat_neigh_cmp)(struct batadv_neigh_node *neigh1,
Simon Wunderlich89652332013-11-13 19:14:46 +01001160 struct batadv_hard_iface *if_outgoing1,
1161 struct batadv_neigh_node *neigh2,
1162 struct batadv_hard_iface *if_outgoing2);
1163 bool (*bat_neigh_is_equiv_or_better)
1164 (struct batadv_neigh_node *neigh1,
1165 struct batadv_hard_iface *if_outgoing1,
1166 struct batadv_neigh_node *neigh2,
1167 struct batadv_hard_iface *if_outgoing2);
Antonio Quartullibcef1f32015-03-01 00:50:17 +08001168 void (*bat_neigh_free)(struct batadv_neigh_node *neigh);
Antonio Quartulli737a2a222013-09-02 12:15:03 +02001169 /* orig_node handling API */
Simon Wunderlichcb1c92e2013-11-21 11:52:16 +01001170 void (*bat_orig_print)(struct batadv_priv *priv, struct seq_file *seq,
1171 struct batadv_hard_iface *hard_iface);
Antonio Quartullid0015fd2013-09-03 11:10:23 +02001172 void (*bat_orig_free)(struct batadv_orig_node *orig_node);
1173 int (*bat_orig_add_if)(struct batadv_orig_node *orig_node,
1174 int max_if_num);
1175 int (*bat_orig_del_if)(struct batadv_orig_node *orig_node,
1176 int max_if_num, int del_if_num);
Marek Lindner1c280472011-11-28 17:40:17 +08001177};
1178
Antonio Quartulli785ea112011-11-23 11:35:44 +01001179/**
Antonio Quartulli2f1dfbe2012-06-30 20:01:19 +02001180 * struct batadv_dat_entry - it is a single entry of batman-adv ARP backend. It
1181 * is used to stored ARP entries needed for the global DAT cache
1182 * @ip: the IPv4 corresponding to this DAT/ARP entry
1183 * @mac_addr: the MAC address associated to the stored IPv4
Antonio Quartullibe1db4f2013-06-04 12:11:43 +02001184 * @vid: the vlan ID associated to this entry
Antonio Quartulli2f1dfbe2012-06-30 20:01:19 +02001185 * @last_update: time in jiffies when this entry was refreshed last time
1186 * @hash_entry: hlist node for batadv_priv_dat::hash
1187 * @refcount: number of contexts the object is used
1188 * @rcu: struct used for freeing in an RCU-safe manner
1189 */
1190struct batadv_dat_entry {
1191 __be32 ip;
Sven Eckelmann6b5e9712015-05-26 18:34:26 +02001192 u8 mac_addr[ETH_ALEN];
Antonio Quartullibe1db4f2013-06-04 12:11:43 +02001193 unsigned short vid;
Antonio Quartulli2f1dfbe2012-06-30 20:01:19 +02001194 unsigned long last_update;
1195 struct hlist_node hash_entry;
1196 atomic_t refcount;
1197 struct rcu_head rcu;
1198};
1199
1200/**
Linus Lüssingc5caf4e2014-02-15 17:47:49 +01001201 * struct batadv_hw_addr - a list entry for a MAC address
1202 * @list: list node for the linking of entries
1203 * @addr: the MAC address of this list entry
1204 */
1205struct batadv_hw_addr {
1206 struct hlist_node list;
1207 unsigned char addr[ETH_ALEN];
1208};
1209
1210/**
Antonio Quartulli785ea112011-11-23 11:35:44 +01001211 * struct batadv_dat_candidate - candidate destination for DAT operations
1212 * @type: the type of the selected candidate. It can one of the following:
1213 * - BATADV_DAT_CANDIDATE_NOT_FOUND
1214 * - BATADV_DAT_CANDIDATE_ORIG
1215 * @orig_node: if type is BATADV_DAT_CANDIDATE_ORIG this field points to the
1216 * corresponding originator node structure
1217 */
1218struct batadv_dat_candidate {
1219 int type;
1220 struct batadv_orig_node *orig_node;
1221};
1222
Marek Lindneref261572013-04-23 21:39:57 +08001223/**
1224 * struct batadv_tvlv_container - container for tvlv appended to OGMs
1225 * @list: hlist node for batadv_priv_tvlv::container_list
1226 * @tvlv_hdr: tvlv header information needed to construct the tvlv
1227 * @value_len: length of the buffer following this struct which contains
1228 * the actual tvlv payload
1229 * @refcount: number of contexts the object is used
1230 */
1231struct batadv_tvlv_container {
1232 struct hlist_node list;
1233 struct batadv_tvlv_hdr tvlv_hdr;
1234 atomic_t refcount;
1235};
1236
1237/**
1238 * struct batadv_tvlv_handler - handler for specific tvlv type and version
1239 * @list: hlist node for batadv_priv_tvlv::handler_list
1240 * @ogm_handler: handler callback which is given the tvlv payload to process on
1241 * incoming OGM packets
1242 * @unicast_handler: handler callback which is given the tvlv payload to process
1243 * on incoming unicast tvlv packets
1244 * @type: tvlv type this handler feels responsible for
1245 * @version: tvlv version this handler feels responsible for
1246 * @flags: tvlv handler flags
1247 * @refcount: number of contexts the object is used
1248 * @rcu: struct used for freeing in an RCU-safe manner
1249 */
1250struct batadv_tvlv_handler {
1251 struct hlist_node list;
1252 void (*ogm_handler)(struct batadv_priv *bat_priv,
1253 struct batadv_orig_node *orig,
Sven Eckelmann6b5e9712015-05-26 18:34:26 +02001254 u8 flags, void *tvlv_value, u16 tvlv_value_len);
Marek Lindneref261572013-04-23 21:39:57 +08001255 int (*unicast_handler)(struct batadv_priv *bat_priv,
Sven Eckelmann6b5e9712015-05-26 18:34:26 +02001256 u8 *src, u8 *dst,
1257 void *tvlv_value, u16 tvlv_value_len);
1258 u8 type;
1259 u8 version;
1260 u8 flags;
Marek Lindneref261572013-04-23 21:39:57 +08001261 atomic_t refcount;
1262 struct rcu_head rcu;
1263};
1264
1265/**
1266 * enum batadv_tvlv_handler_flags - tvlv handler flags definitions
1267 * @BATADV_TVLV_HANDLER_OGM_CIFNOTFND: tvlv ogm processing function will call
1268 * this handler even if its type was not found (with no data)
1269 * @BATADV_TVLV_HANDLER_OGM_CALLED: interval tvlv handling flag - the API marks
1270 * a handler as being called, so it won't be called if the
1271 * BATADV_TVLV_HANDLER_OGM_CIFNOTFND flag was set
1272 */
1273enum batadv_tvlv_handler_flags {
1274 BATADV_TVLV_HANDLER_OGM_CIFNOTFND = BIT(1),
1275 BATADV_TVLV_HANDLER_OGM_CALLED = BIT(2),
1276};
1277
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +00001278#endif /* _NET_BATMAN_ADV_TYPES_H_ */