1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
|
/*
* Copyright (C) 2007-2011 B.A.T.M.A.N. contributors:
*
* Marek Lindner, Simon Wunderlich
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of version 2 of the GNU General Public
* License as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA
*
*/
#ifndef _NET_BATMAN_ADV_MAIN_H_
#define _NET_BATMAN_ADV_MAIN_H_
#define DRIVER_AUTHOR "Marek Lindner <lindner_marek@yahoo.de>, " \
"Simon Wunderlich <siwu@hrz.tu-chemnitz.de>"
#define DRIVER_DESC "B.A.T.M.A.N. advanced"
#define DRIVER_DEVICE "batman-adv"
#ifndef SOURCE_VERSION
#define SOURCE_VERSION "2011.3.0"
#endif
/* B.A.T.M.A.N. parameters */
#define TQ_MAX_VALUE 255
#define JITTER 20
/* Time To Live of broadcast messages */
#define TTL 50
/* purge originators after time in seconds if no valid packet comes in
* -> TODO: check influence on TQ_LOCAL_WINDOW_SIZE */
#define PURGE_TIMEOUT 200
#define TT_LOCAL_TIMEOUT 3600 /* in seconds */
#define TT_CLIENT_ROAM_TIMEOUT 600
/* sliding packet range of received originator messages in squence numbers
* (should be a multiple of our word size) */
#define TQ_LOCAL_WINDOW_SIZE 64
#define TT_REQUEST_TIMEOUT 3 /* seconds we have to keep pending tt_req */
#define TQ_GLOBAL_WINDOW_SIZE 5
#define TQ_LOCAL_BIDRECT_SEND_MINIMUM 1
#define TQ_LOCAL_BIDRECT_RECV_MINIMUM 1
#define TQ_TOTAL_BIDRECT_LIMIT 1
#define TT_OGM_APPEND_MAX 3 /* number of OGMs sent with the last tt diff */
#define ROAMING_MAX_TIME 20 /* Time in which a client can roam at most
* ROAMING_MAX_COUNT times */
#define ROAMING_MAX_COUNT 5
#define NO_FLAGS 0
#define NUM_WORDS (TQ_LOCAL_WINDOW_SIZE / WORD_BIT_SIZE)
#define LOG_BUF_LEN 8192 /* has to be a power of 2 */
#define VIS_INTERVAL 5000 /* 5 seconds */
/* how much worse secondary interfaces may be to be considered as bonding
* candidates */
#define BONDING_TQ_THRESHOLD 50
/* should not be bigger than 512 bytes or change the size of
* forw_packet->direct_link_flags */
#define MAX_AGGREGATION_BYTES 512
#define MAX_AGGREGATION_MS 100
#define SOFTIF_NEIGH_TIMEOUT 180000 /* 3 minutes */
/* don't reset again within 30 seconds */
#define RESET_PROTECTION_MS 30000
#define EXPECTED_SEQNO_RANGE 65536
enum mesh_state {
MESH_INACTIVE,
MESH_ACTIVE,
MESH_DEACTIVATING
};
#define BCAST_QUEUE_LEN 256
#define BATMAN_QUEUE_LEN 256
enum uev_action {
UEV_ADD = 0,
UEV_DEL,
UEV_CHANGE
};
enum uev_type {
UEV_GW = 0
};
#define GW_THRESHOLD 50
/*
* Debug Messages
*/
#ifdef pr_fmt
#undef pr_fmt
#endif
/* Append 'batman-adv: ' before kernel messages */
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
/* all messages related to routing / flooding / broadcasting / etc */
enum dbg_level {
DBG_BATMAN = 1 << 0,
DBG_ROUTES = 1 << 1, /* route added / changed / deleted */
DBG_TT = 1 << 2, /* translation table operations */
DBG_ALL = 7
};
/*
* Vis
*/
/*
* Kernel headers
*/
#include <linux/mutex.h> /* mutex */
#include <linux/module.h> /* needed by all modules */
#include <linux/netdevice.h> /* netdevice */
#include <linux/etherdevice.h> /* ethernet address classifaction */
#include <linux/if_ether.h> /* ethernet header */
#include <linux/poll.h> /* poll_table */
#include <linux/kthread.h> /* kernel threads */
#include <linux/pkt_sched.h> /* schedule types */
#include <linux/workqueue.h> /* workqueue */
#include <linux/slab.h>
#include <net/sock.h> /* struct sock */
#include <linux/jiffies.h>
#include <linux/seq_file.h>
#include "types.h"
extern struct list_head hardif_list;
extern unsigned char broadcast_addr[];
extern struct workqueue_struct *bat_event_workqueue;
int mesh_init(struct net_device *soft_iface);
void mesh_free(struct net_device *soft_iface);
void inc_module_count(void);
void dec_module_count(void);
int is_my_mac(const uint8_t *addr);
#ifdef CONFIG_BATMAN_ADV_DEBUG
int debug_log(struct bat_priv *bat_priv, const char *fmt, ...) __printf(2, 3);
#define bat_dbg(type, bat_priv, fmt, arg...) \
do { \
if (atomic_read(&bat_priv->log_level) & type) \
debug_log(bat_priv, fmt, ## arg); \
} \
while (0)
#else /* !CONFIG_BATMAN_ADV_DEBUG */
__printf(3, 4)
static inline void bat_dbg(int type __always_unused,
struct bat_priv *bat_priv __always_unused,
const char *fmt __always_unused, ...)
{
}
#endif
#define bat_info(net_dev, fmt, arg...) \
do { \
struct net_device *_netdev = (net_dev); \
struct bat_priv *_batpriv = netdev_priv(_netdev); \
bat_dbg(DBG_ALL, _batpriv, fmt, ## arg); \
pr_info("%s: " fmt, _netdev->name, ## arg); \
} while (0)
#define bat_err(net_dev, fmt, arg...) \
do { \
struct net_device *_netdev = (net_dev); \
struct bat_priv *_batpriv = netdev_priv(_netdev); \
bat_dbg(DBG_ALL, _batpriv, fmt, ## arg); \
pr_err("%s: " fmt, _netdev->name, ## arg); \
} while (0)
/**
* returns 1 if they are the same ethernet addr
*
* note: can't use compare_ether_addr() as it requires aligned memory
*/
static inline int compare_eth(const void *data1, const void *data2)
{
return (memcmp(data1, data2, ETH_ALEN) == 0 ? 1 : 0);
}
#define atomic_dec_not_zero(v) atomic_add_unless((v), -1, 0)
/* Returns the smallest signed integer in two's complement with the sizeof x */
#define smallest_signed_int(x) (1u << (7u + 8u * (sizeof(x) - 1u)))
/* Checks if a sequence number x is a predecessor/successor of y.
* they handle overflows/underflows and can correctly check for a
* predecessor/successor unless the variable sequence number has grown by
* more then 2**(bitwidth(x)-1)-1.
* This means that for a uint8_t with the maximum value 255, it would think:
* - when adding nothing - it is neither a predecessor nor a successor
* - before adding more than 127 to the starting value - it is a predecessor,
* - when adding 128 - it is neither a predecessor nor a successor,
* - after adding more than 127 to the starting value - it is a successor */
#define seq_before(x, y) ({typeof(x) _d1 = (x); \
typeof(y) _d2 = (y); \
typeof(x) _dummy = (_d1 - _d2); \
(void) (&_d1 == &_d2); \
_dummy > smallest_signed_int(_dummy); })
#define seq_after(x, y) seq_before(y, x)
#endif /* _NET_BATMAN_ADV_MAIN_H_ */
|
