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Sven Eckelmannac79cbb2017-01-01 00:00:00 +01001/* Copyright (C) 2007-2017 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
18#ifndef _NET_BATMAN_ADV_MAIN_H_
19#define _NET_BATMAN_ADV_MAIN_H_
20
Marek Lindnerbc58eee2013-10-12 22:10:03 +080021#define BATADV_DRIVER_AUTHOR "Marek Lindner <mareklindner@neomailbox.ch>, " \
Simon Wunderlichc679ff82013-10-10 23:59:10 +020022 "Simon Wunderlich <sw@simonwunderlich.de>"
Sven Eckelmann42d0b042012-06-03 22:19:17 +020023#define BATADV_DRIVER_DESC "B.A.T.M.A.N. advanced"
24#define BATADV_DRIVER_DEVICE "batman-adv"
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +000025
Sven Eckelmann42d0b042012-06-03 22:19:17 +020026#ifndef BATADV_SOURCE_VERSION
Simon Wunderlichb96a8982017-02-28 17:25:12 +010027#define BATADV_SOURCE_VERSION "2017.1"
Sven Eckelmann44c43492011-07-05 10:42:51 +020028#endif
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +000029
30/* B.A.T.M.A.N. parameters */
31
Sven Eckelmann42d0b042012-06-03 22:19:17 +020032#define BATADV_TQ_MAX_VALUE 255
Antonio Quartulli0da00352016-01-16 16:40:12 +080033#define BATADV_THROUGHPUT_MAX_VALUE 0xFFFFFFFF
Sven Eckelmann42d0b042012-06-03 22:19:17 +020034#define BATADV_JITTER 20
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +000035
Sven Eckelmann9cfc7bd2012-05-12 02:09:43 +020036/* Time To Live of broadcast messages */
Sven Eckelmann42d0b042012-06-03 22:19:17 +020037#define BATADV_TTL 50
Sven Eckelmann6e215fd2011-05-08 12:45:45 +020038
Simon Wunderlich81f02682015-11-23 19:57:22 +010039/* maximum sequence number age of broadcast messages */
40#define BATADV_BCAST_MAX_AGE 64
41
Sven Eckelmann6e215fd2011-05-08 12:45:45 +020042/* purge originators after time in seconds if no valid packet comes in
Sven Eckelmann42d0b042012-06-03 22:19:17 +020043 * -> TODO: check influence on BATADV_TQ_LOCAL_WINDOW_SIZE
Sven Eckelmann9cfc7bd2012-05-12 02:09:43 +020044 */
Sven Eckelmann42d0b042012-06-03 22:19:17 +020045#define BATADV_PURGE_TIMEOUT 200000 /* 200 seconds */
Antonio Quartulli7cf4d522012-11-08 22:16:15 +010046#define BATADV_TT_LOCAL_TIMEOUT 600000 /* in milliseconds */
Antonio Quartullia51fb9b2012-07-01 19:07:31 +020047#define BATADV_TT_CLIENT_ROAM_TIMEOUT 600000 /* in milliseconds */
Antonio Quartulli30cfd022012-07-05 23:38:29 +020048#define BATADV_TT_CLIENT_TEMP_TIMEOUT 600000 /* in milliseconds */
Antonio Quartulli72414442012-12-25 13:14:37 +010049#define BATADV_TT_WORK_PERIOD 5000 /* 5 seconds */
50#define BATADV_ORIG_WORK_PERIOD 1000 /* 1 second */
Linus Lüssingcbebd362016-08-06 22:23:16 +020051#define BATADV_MCAST_WORK_PERIOD 500 /* 0.5 seconds */
Marek Lindnerfc1f8692015-02-18 22:19:20 +080052#define BATADV_DAT_ENTRY_TIMEOUT (5 * 60000) /* 5 mins in milliseconds */
Antonio Quartulli015758d2011-07-09 17:52:13 +020053/* sliding packet range of received originator messages in sequence numbers
Sven Eckelmann9cfc7bd2012-05-12 02:09:43 +020054 * (should be a multiple of our word size)
55 */
Sven Eckelmann42d0b042012-06-03 22:19:17 +020056#define BATADV_TQ_LOCAL_WINDOW_SIZE 64
Antonio Quartullia51fb9b2012-07-01 19:07:31 +020057/* milliseconds we have to keep pending tt_req */
Sven Eckelmann42d0b042012-06-03 22:19:17 +020058#define BATADV_TT_REQUEST_TIMEOUT 3000
Antonio Quartullia73105b2011-04-27 14:27:44 +020059
Sven Eckelmann42d0b042012-06-03 22:19:17 +020060#define BATADV_TQ_GLOBAL_WINDOW_SIZE 5
61#define BATADV_TQ_LOCAL_BIDRECT_SEND_MINIMUM 1
62#define BATADV_TQ_LOCAL_BIDRECT_RECV_MINIMUM 1
63#define BATADV_TQ_TOTAL_BIDRECT_LIMIT 1
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +000064
Linus Luessing162bd642016-01-16 16:40:10 +080065/* B.A.T.M.A.N. V */
Antonio Quartullic8334842015-11-10 18:50:51 +010066#define BATADV_THROUGHPUT_DEFAULT_VALUE 10 /* 1 Mbps */
Antonio Quartulli8d2d4992015-11-10 18:51:22 +010067#define BATADV_ELP_PROBES_PER_NODE 2
68#define BATADV_ELP_MIN_PROBE_SIZE 200 /* bytes */
69#define BATADV_ELP_PROBE_MAX_TX_DIFF 100 /* milliseconds */
Linus Luessing162bd642016-01-16 16:40:10 +080070#define BATADV_ELP_MAX_AGE 64
Antonio Quartulli93231582016-01-16 16:40:13 +080071#define BATADV_OGM_MAX_ORIGDIFF 5
72#define BATADV_OGM_MAX_AGE 64
Linus Luessing162bd642016-01-16 16:40:10 +080073
Sven Eckelmann42d0b042012-06-03 22:19:17 +020074/* number of OGMs sent with the last tt diff */
75#define BATADV_TT_OGM_APPEND_MAX 3
Antonio Quartullia73105b2011-04-27 14:27:44 +020076
Sven Eckelmann9cfc7bd2012-05-12 02:09:43 +020077/* Time in which a client can roam at most ROAMING_MAX_COUNT times in
Antonio Quartullia51fb9b2012-07-01 19:07:31 +020078 * milliseconds
Sven Eckelmann9cfc7bd2012-05-12 02:09:43 +020079 */
Sven Eckelmann42d0b042012-06-03 22:19:17 +020080#define BATADV_ROAMING_MAX_TIME 20000
81#define BATADV_ROAMING_MAX_COUNT 5
Antonio Quartullicc47f662011-04-27 14:27:57 +020082
Sven Eckelmann42d0b042012-06-03 22:19:17 +020083#define BATADV_NO_FLAGS 0
Marek Lindnerecbd5322011-06-09 17:13:09 +020084
Sven Eckelmann42d0b042012-06-03 22:19:17 +020085#define BATADV_NULL_IFINDEX 0 /* dummy ifindex used to avoid iface checks */
Antonio Quartullibc279082011-07-07 15:35:35 +020086
Antonio Quartulli9464d072013-11-16 12:03:48 +010087#define BATADV_NO_MARK 0
88
Simon Wunderlich89652332013-11-13 19:14:46 +010089/* default interface for multi interface operation. The default interface is
90 * used for communication which originated locally (i.e. is not forwarded)
91 * or where special forwarding is not desired/necessary.
92 */
93#define BATADV_IF_DEFAULT ((struct batadv_hard_iface *)NULL)
94
Sven Eckelmann42d0b042012-06-03 22:19:17 +020095#define BATADV_NUM_WORDS BITS_TO_LONGS(BATADV_TQ_LOCAL_WINDOW_SIZE)
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +000096
Sven Eckelmann42d0b042012-06-03 22:19:17 +020097#define BATADV_LOG_BUF_LEN 8192 /* has to be a power of 2 */
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +000098
Matthias Schiffercaf65bf2013-03-09 23:14:23 +010099/* number of packets to send for broadcasts on different interface types */
100#define BATADV_NUM_BCASTS_DEFAULT 1
101#define BATADV_NUM_BCASTS_WIRELESS 3
102#define BATADV_NUM_BCASTS_MAX 3
103
Antonio Quartulli33a3bb42016-05-05 13:09:43 +0200104/* length of the single packet used by the TP meter */
105#define BATADV_TP_PACKET_LEN ETH_DATA_LEN
106
Antonio Quartullic384ea32011-06-26 03:37:18 +0200107/* msecs after which an ARP_REQUEST is sent in broadcast as fallback */
108#define ARP_REQ_DELAY 250
Antonio Quartulli785ea112011-11-23 11:35:44 +0100109/* numbers of originator to contact for any PUT/GET DHT operation */
110#define BATADV_DAT_CANDIDATES_NUM 3
111
Martin Hundebølla0e28772014-07-15 09:41:08 +0200112/* BATADV_TQ_SIMILARITY_THRESHOLD - TQ points that a secondary metric can differ
113 * at most from the primary one in order to be still considered acceptable
Antonio Quartullic43c9812013-09-02 12:15:05 +0200114 */
115#define BATADV_TQ_SIMILARITY_THRESHOLD 50
116
Sven Eckelmann6e215fd2011-05-08 12:45:45 +0200117/* should not be bigger than 512 bytes or change the size of
Sven Eckelmann9cfc7bd2012-05-12 02:09:43 +0200118 * forw_packet->direct_link_flags
119 */
Sven Eckelmann42d0b042012-06-03 22:19:17 +0200120#define BATADV_MAX_AGGREGATION_BYTES 512
121#define BATADV_MAX_AGGREGATION_MS 100
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000122
Sven Eckelmann42d0b042012-06-03 22:19:17 +0200123#define BATADV_BLA_PERIOD_LENGTH 10000 /* 10 seconds */
Simon Wunderliche1544f32015-11-09 16:20:53 +0100124#define BATADV_BLA_BACKBONE_TIMEOUT (BATADV_BLA_PERIOD_LENGTH * 6)
Sven Eckelmann42d0b042012-06-03 22:19:17 +0200125#define BATADV_BLA_CLAIM_TIMEOUT (BATADV_BLA_PERIOD_LENGTH * 10)
Simon Wunderlich28709872012-09-13 18:18:46 +0200126#define BATADV_BLA_WAIT_PERIODS 3
Simon Wunderlichcd9c7bf2016-03-12 10:49:33 +0100127#define BATADV_BLA_LOOPDETECT_PERIODS 6
128#define BATADV_BLA_LOOPDETECT_TIMEOUT 3000 /* 3 seconds */
Simon Wunderlichfe2da6f2012-01-22 20:00:24 +0100129
Sven Eckelmann42d0b042012-06-03 22:19:17 +0200130#define BATADV_DUPLIST_SIZE 16
131#define BATADV_DUPLIST_TIMEOUT 500 /* 500 ms */
Sven Eckelmann6e215fd2011-05-08 12:45:45 +0200132/* don't reset again within 30 seconds */
Sven Eckelmann42d0b042012-06-03 22:19:17 +0200133#define BATADV_RESET_PROTECTION_MS 30000
134#define BATADV_EXPECTED_SEQNO_RANGE 65536
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000135
Martin Hundebølld56b1702013-01-25 11:12:39 +0100136#define BATADV_NC_NODE_TIMEOUT 10000 /* Milliseconds */
137
Antonio Quartulli33a3bb42016-05-05 13:09:43 +0200138/**
139 * BATADV_TP_MAX_NUM - maximum number of simultaneously active tp sessions
140 */
141#define BATADV_TP_MAX_NUM 5
142
Sven Eckelmann39c75a52012-06-03 22:19:22 +0200143enum batadv_mesh_state {
144 BATADV_MESH_INACTIVE,
145 BATADV_MESH_ACTIVE,
146 BATADV_MESH_DEACTIVATING,
Sven Eckelmanne8958db2011-06-04 11:26:00 +0200147};
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000148
Sven Eckelmann42d0b042012-06-03 22:19:17 +0200149#define BATADV_BCAST_QUEUE_LEN 256
150#define BATADV_BATMAN_QUEUE_LEN 256
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000151
Sven Eckelmann39c75a52012-06-03 22:19:22 +0200152enum batadv_uev_action {
153 BATADV_UEV_ADD = 0,
154 BATADV_UEV_DEL,
155 BATADV_UEV_CHANGE,
Simon Wunderlichcd9c7bf2016-03-12 10:49:33 +0100156 BATADV_UEV_LOOPDETECT,
Antonio Quartullic6bda682011-04-26 18:26:01 +0200157};
158
Sven Eckelmann39c75a52012-06-03 22:19:22 +0200159enum batadv_uev_type {
160 BATADV_UEV_GW = 0,
Simon Wunderlichcd9c7bf2016-03-12 10:49:33 +0100161 BATADV_UEV_BLA,
Antonio Quartullic6bda682011-04-26 18:26:01 +0200162};
163
Sven Eckelmann42d0b042012-06-03 22:19:17 +0200164#define BATADV_GW_THRESHOLD 50
Antonio Quartulli43676ab2011-04-26 21:31:45 +0200165
Martin Hundebøll610bfc6bc2013-05-23 16:53:02 +0200166/* Number of fragment chains for each orig_node */
167#define BATADV_FRAG_BUFFER_COUNT 8
168/* Maximum number of fragments for one packet */
169#define BATADV_FRAG_MAX_FRAGMENTS 16
170/* Maxumim size of each fragment */
171#define BATADV_FRAG_MAX_FRAG_SIZE 1400
172/* Time to keep fragments while waiting for rest of the fragments */
173#define BATADV_FRAG_TIMEOUT 10000
174
Antonio Quartulli785ea112011-11-23 11:35:44 +0100175#define BATADV_DAT_CANDIDATE_NOT_FOUND 0
176#define BATADV_DAT_CANDIDATE_ORIG 1
177
Sven Eckelmann21a12362012-03-07 09:07:46 +0100178/* Debug Messages */
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000179#ifdef pr_fmt
180#undef pr_fmt
181#endif
Sven Eckelmann6e215fd2011-05-08 12:45:45 +0200182/* Append 'batman-adv: ' before kernel messages */
183#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000184
Sven Eckelmann21a12362012-03-07 09:07:46 +0100185/* Kernel headers */
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000186
Sven Eckelmann1e2c2a42015-04-17 19:40:28 +0200187#include <linux/bitops.h> /* for packet.h */
188#include <linux/compiler.h>
Sven Eckelmann1e2c2a42015-04-17 19:40:28 +0200189#include <linux/etherdevice.h>
190#include <linux/if_ether.h> /* for packet.h */
Sven Eckelmannfcafa5e2016-05-15 11:07:42 +0200191#include <linux/if_vlan.h>
192#include <linux/jiffies.h>
Sven Eckelmannfcafa5e2016-05-15 11:07:42 +0200193#include <linux/percpu.h>
Sven Eckelmann1e2c2a42015-04-17 19:40:28 +0200194#include <linux/types.h>
Antonio Quartulli16052782013-06-04 12:11:41 +0200195
Sven Eckelmannf7a2bd62017-02-22 17:16:42 +0100196#include "packet.h"
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000197#include "types.h"
198
Sven Eckelmannba412082016-05-15 23:48:31 +0200199struct net_device;
200struct packet_type;
Sven Eckelmann1e2c2a42015-04-17 19:40:28 +0200201struct seq_file;
202struct sk_buff;
203
Sven Eckelmannf7a2bd62017-02-22 17:16:42 +0100204/**
205 * batadv_print_vid - return printable version of vid information
206 * @vid: the VLAN identifier
207 *
208 * Return: -1 when no VLAN is used, VLAN id otherwise
209 */
210static inline int batadv_print_vid(unsigned short vid)
211{
212 if (vid & BATADV_VLAN_HAS_TAG)
213 return (int)(vid & VLAN_VID_MASK);
214 else
215 return -1;
216}
Antonio Quartullieb2deb62013-04-19 18:07:00 +0200217
Sven Eckelmann3193e8f2012-05-12 02:09:42 +0200218extern struct list_head batadv_hardif_list;
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000219
Sven Eckelmann3193e8f2012-05-12 02:09:42 +0200220extern unsigned char batadv_broadcast_addr[];
221extern struct workqueue_struct *batadv_event_workqueue;
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000222
Sven Eckelmann3193e8f2012-05-12 02:09:42 +0200223int batadv_mesh_init(struct net_device *soft_iface);
224void batadv_mesh_free(struct net_device *soft_iface);
Sven Eckelmann6b5e9712015-05-26 18:34:26 +0200225bool batadv_is_my_mac(struct batadv_priv *bat_priv, const u8 *addr);
Marek Lindner30da63a2012-08-03 17:15:46 +0200226struct batadv_hard_iface *
227batadv_seq_print_text_primary_if_get(struct seq_file *seq);
Marek Lindner411d6ed2013-05-08 13:31:59 +0800228int batadv_max_header_len(void);
Simon Wunderlichc54f38c92013-07-29 17:56:44 +0200229void batadv_skb_set_priority(struct sk_buff *skb, int offset);
Sven Eckelmann3193e8f2012-05-12 02:09:42 +0200230int batadv_batman_skb_recv(struct sk_buff *skb, struct net_device *dev,
231 struct packet_type *ptype,
232 struct net_device *orig_dev);
Sven Eckelmann56303d32012-06-05 22:31:31 +0200233int
Sven Eckelmann6b5e9712015-05-26 18:34:26 +0200234batadv_recv_handler_register(u8 packet_type,
Sven Eckelmann56303d32012-06-05 22:31:31 +0200235 int (*recv_handler)(struct sk_buff *,
236 struct batadv_hard_iface *));
Sven Eckelmann6b5e9712015-05-26 18:34:26 +0200237void batadv_recv_handler_unregister(u8 packet_type);
Sven Eckelmann95a066d2012-10-17 21:10:39 +0200238__be32 batadv_skb_crc32(struct sk_buff *skb, u8 *payload_ptr);
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000239
Antonio Quartulli0aca86c2012-08-27 11:45:37 +0200240/**
Sven Eckelmann62fe7102015-09-15 19:00:48 +0200241 * batadv_compare_eth - Compare two not u16 aligned Ethernet addresses
Sven Eckelmann7afcbbe2015-10-31 12:29:29 +0100242 * @data1: Pointer to a six-byte array containing the Ethernet address
243 * @data2: Pointer other six-byte array containing the Ethernet address
Marek Lindner39901e72011-02-18 12:28:08 +0000244 *
Joe Perchesc3923b72013-09-01 15:45:08 -0700245 * note: can't use ether_addr_equal() as it requires aligned memory
Sven Eckelmann62fe7102015-09-15 19:00:48 +0200246 *
Sven Eckelmann4b426b12016-02-22 21:02:39 +0100247 * Return: true if they are the same ethernet addr
Marek Lindner39901e72011-02-18 12:28:08 +0000248 */
Markus Pargmannf2d5cf22014-12-26 12:41:39 +0100249static inline bool batadv_compare_eth(const void *data1, const void *data2)
Marek Lindner39901e72011-02-18 12:28:08 +0000250{
Joe Perchesd9cd4fe52013-12-06 14:39:46 -0800251 return ether_addr_equal_unaligned(data1, data2);
Marek Lindner39901e72011-02-18 12:28:08 +0000252}
253
Ben Hutchings2c530402012-07-10 10:55:09 +0000254/**
Antonio Quartulli6d030de2016-03-11 16:36:19 +0100255 * batadv_has_timed_out - compares current time (jiffies) and timestamp +
256 * timeout
Martin Hundebølla04ccd52011-12-08 13:32:41 +0100257 * @timestamp: base value to compare with (in jiffies)
258 * @timeout: added to base value before comparing (in milliseconds)
259 *
Sven Eckelmann62fe7102015-09-15 19:00:48 +0200260 * Return: true if current time is after timestamp + timeout
Martin Hundebølla04ccd52011-12-08 13:32:41 +0100261 */
Sven Eckelmann1eda58b2012-05-12 13:48:58 +0200262static inline bool batadv_has_timed_out(unsigned long timestamp,
263 unsigned int timeout)
Martin Hundebølla04ccd52011-12-08 13:32:41 +0100264{
265 return time_is_before_jiffies(timestamp + msecs_to_jiffies(timeout));
266}
Sven Eckelmann747e4222011-05-14 23:14:50 +0200267
Sven Eckelmann3e348192012-05-16 20:23:22 +0200268#define batadv_atomic_dec_not_zero(v) atomic_add_unless((v), -1, 0)
Antonio Quartulli5f657ec2011-04-20 09:52:56 +0200269
Antonio Quartullif5d33d32011-05-18 09:20:50 +0200270/* Returns the smallest signed integer in two's complement with the sizeof x */
Sven Eckelmann3e348192012-05-16 20:23:22 +0200271#define batadv_smallest_signed_int(x) (1u << (7u + 8u * (sizeof(x) - 1u)))
Antonio Quartullif5d33d32011-05-18 09:20:50 +0200272
273/* Checks if a sequence number x is a predecessor/successor of y.
274 * they handle overflows/underflows and can correctly check for a
275 * predecessor/successor unless the variable sequence number has grown by
276 * more then 2**(bitwidth(x)-1)-1.
Sven Eckelmann6b5e9712015-05-26 18:34:26 +0200277 * This means that for a u8 with the maximum value 255, it would think:
Antonio Quartullif5d33d32011-05-18 09:20:50 +0200278 * - when adding nothing - it is neither a predecessor nor a successor
279 * - before adding more than 127 to the starting value - it is a predecessor,
280 * - when adding 128 - it is neither a predecessor nor a successor,
Sven Eckelmann9cfc7bd2012-05-12 02:09:43 +0200281 * - after adding more than 127 to the starting value - it is a successor
282 */
Antonio Quartulli9687a312014-09-01 14:37:26 +0200283#define batadv_seq_before(x, y) ({typeof(x)_d1 = (x); \
284 typeof(y)_d2 = (y); \
285 typeof(x)_dummy = (_d1 - _d2); \
286 (void)(&_d1 == &_d2); \
Sven Eckelmann3e348192012-05-16 20:23:22 +0200287 _dummy > batadv_smallest_signed_int(_dummy); })
288#define batadv_seq_after(x, y) batadv_seq_before(y, x)
Antonio Quartullif5d33d32011-05-18 09:20:50 +0200289
Martin Hundebøllf8214862012-04-20 17:02:45 +0200290/* Stop preemption on local cpu while incrementing the counter */
Sven Eckelmann56303d32012-06-05 22:31:31 +0200291static inline void batadv_add_counter(struct batadv_priv *bat_priv, size_t idx,
Martin Hundebøllf8214862012-04-20 17:02:45 +0200292 size_t count)
293{
Shan Wei56917442012-11-13 09:53:26 +0800294 this_cpu_add(bat_priv->bat_counters[idx], count);
Martin Hundebøllf8214862012-04-20 17:02:45 +0200295}
296
297#define batadv_inc_counter(b, i) batadv_add_counter(b, i, 1)
298
Martin Hundebøll3c12de92013-01-25 11:12:41 +0100299/* Define a macro to reach the control buffer of the skb. The members of the
300 * control buffer are defined in struct batadv_skb_cb in types.h.
301 * The macro is inspired by the similar macro TCP_SKB_CB() in tcp.h.
302 */
303#define BATADV_SKB_CB(__skb) ((struct batadv_skb_cb *)&((__skb)->cb[0]))
304
Antonio Quartullic018ad32013-06-04 12:11:39 +0200305unsigned short batadv_get_vid(struct sk_buff *skb, size_t header_len);
Antonio Quartullieceb22a2013-11-16 12:03:51 +0100306bool batadv_vlan_ap_isola_get(struct batadv_priv *bat_priv, unsigned short vid);
Marek Lindneref261572013-04-23 21:39:57 +0800307
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000308#endif /* _NET_BATMAN_ADV_MAIN_H_ */