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20#ifndef _NET_BATMAN_ADV_MAIN_H_
21#define _NET_BATMAN_ADV_MAIN_H_
22
23#define BATADV_DRIVER_AUTHOR "Marek Lindner <mareklindner@neomailbox.ch>, " \
24 "Simon Wunderlich <sw@simonwunderlich.de>"
25#define BATADV_DRIVER_DESC "B.A.T.M.A.N. advanced"
26#define BATADV_DRIVER_DEVICE "batman-adv"
27
28#ifndef BATADV_SOURCE_VERSION
29#define BATADV_SOURCE_VERSION "2013.5.0"
30#endif
31
32
33
34#define BATADV_TQ_MAX_VALUE 255
35#define BATADV_JITTER 20
36
37
38#define BATADV_TTL 50
39
40
41
42
43#define BATADV_PURGE_TIMEOUT 200000
44#define BATADV_TT_LOCAL_TIMEOUT 600000
45#define BATADV_TT_CLIENT_ROAM_TIMEOUT 600000
46#define BATADV_TT_CLIENT_TEMP_TIMEOUT 600000
47#define BATADV_TT_WORK_PERIOD 5000
48#define BATADV_ORIG_WORK_PERIOD 1000
49#define BATADV_DAT_ENTRY_TIMEOUT (5*60000)
50
51
52
53#define BATADV_TQ_LOCAL_WINDOW_SIZE 64
54
55#define BATADV_TT_REQUEST_TIMEOUT 3000
56
57#define BATADV_TQ_GLOBAL_WINDOW_SIZE 5
58#define BATADV_TQ_LOCAL_BIDRECT_SEND_MINIMUM 1
59#define BATADV_TQ_LOCAL_BIDRECT_RECV_MINIMUM 1
60#define BATADV_TQ_TOTAL_BIDRECT_LIMIT 1
61
62
63#define BATADV_TT_OGM_APPEND_MAX 3
64
65
66
67
68#define BATADV_ROAMING_MAX_TIME 20000
69#define BATADV_ROAMING_MAX_COUNT 5
70
71#define BATADV_NO_FLAGS 0
72
73#define BATADV_NULL_IFINDEX 0
74
75#define BATADV_NUM_WORDS BITS_TO_LONGS(BATADV_TQ_LOCAL_WINDOW_SIZE)
76
77#define BATADV_LOG_BUF_LEN 8192
78
79
80#define BATADV_NUM_BCASTS_DEFAULT 1
81#define BATADV_NUM_BCASTS_WIRELESS 3
82#define BATADV_NUM_BCASTS_MAX 3
83
84
85#define ARP_REQ_DELAY 250
86
87#define BATADV_DAT_CANDIDATES_NUM 3
88
89
90
91
92
93#define BATADV_TQ_SIMILARITY_THRESHOLD 50
94
95
96
97
98#define BATADV_BONDING_TQ_THRESHOLD 50
99
100
101
102
103#define BATADV_MAX_AGGREGATION_BYTES 512
104#define BATADV_MAX_AGGREGATION_MS 100
105
106#define BATADV_BLA_PERIOD_LENGTH 10000
107#define BATADV_BLA_BACKBONE_TIMEOUT (BATADV_BLA_PERIOD_LENGTH * 3)
108#define BATADV_BLA_CLAIM_TIMEOUT (BATADV_BLA_PERIOD_LENGTH * 10)
109#define BATADV_BLA_WAIT_PERIODS 3
110
111#define BATADV_DUPLIST_SIZE 16
112#define BATADV_DUPLIST_TIMEOUT 500
113
114#define BATADV_RESET_PROTECTION_MS 30000
115#define BATADV_EXPECTED_SEQNO_RANGE 65536
116
117#define BATADV_NC_NODE_TIMEOUT 10000
118
119enum batadv_mesh_state {
120 BATADV_MESH_INACTIVE,
121 BATADV_MESH_ACTIVE,
122 BATADV_MESH_DEACTIVATING,
123};
124
125#define BATADV_BCAST_QUEUE_LEN 256
126#define BATADV_BATMAN_QUEUE_LEN 256
127
128enum batadv_uev_action {
129 BATADV_UEV_ADD = 0,
130 BATADV_UEV_DEL,
131 BATADV_UEV_CHANGE,
132};
133
134enum batadv_uev_type {
135 BATADV_UEV_GW = 0,
136};
137
138#define BATADV_GW_THRESHOLD 50
139
140
141#define BATADV_FRAG_BUFFER_COUNT 8
142
143#define BATADV_FRAG_MAX_FRAGMENTS 16
144
145#define BATADV_FRAG_MAX_FRAG_SIZE 1400
146
147#define BATADV_FRAG_TIMEOUT 10000
148
149#define BATADV_DAT_CANDIDATE_NOT_FOUND 0
150#define BATADV_DAT_CANDIDATE_ORIG 1
151
152
153#ifdef pr_fmt
154#undef pr_fmt
155#endif
156
157#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
158
159
160
161#include <linux/mutex.h>
162#include <linux/module.h>
163#include <linux/netdevice.h>
164#include <linux/etherdevice.h>
165#include <linux/if_ether.h>
166#include <linux/poll.h>
167#include <linux/kthread.h>
168#include <linux/pkt_sched.h>
169#include <linux/workqueue.h>
170#include <linux/percpu.h>
171#include <linux/slab.h>
172#include <net/sock.h>
173#include <net/rtnetlink.h>
174#include <linux/jiffies.h>
175#include <linux/seq_file.h>
176#include <linux/if_vlan.h>
177
178#include "types.h"
179
180#define BATADV_PRINT_VID(vid) (vid & BATADV_VLAN_HAS_TAG ? \
181 (int)(vid & VLAN_VID_MASK) : -1)
182
183extern char batadv_routing_algo[];
184extern struct list_head batadv_hardif_list;
185
186extern unsigned char batadv_broadcast_addr[];
187extern struct workqueue_struct *batadv_event_workqueue;
188
189int batadv_mesh_init(struct net_device *soft_iface);
190void batadv_mesh_free(struct net_device *soft_iface);
191int batadv_is_my_mac(struct batadv_priv *bat_priv, const uint8_t *addr);
192struct batadv_hard_iface *
193batadv_seq_print_text_primary_if_get(struct seq_file *seq);
194int batadv_max_header_len(void);
195void batadv_skb_set_priority(struct sk_buff *skb, int offset);
196int batadv_batman_skb_recv(struct sk_buff *skb, struct net_device *dev,
197 struct packet_type *ptype,
198 struct net_device *orig_dev);
199int
200batadv_recv_handler_register(uint8_t packet_type,
201 int (*recv_handler)(struct sk_buff *,
202 struct batadv_hard_iface *));
203void batadv_recv_handler_unregister(uint8_t packet_type);
204int batadv_algo_register(struct batadv_algo_ops *bat_algo_ops);
205int batadv_algo_select(struct batadv_priv *bat_priv, char *name);
206int batadv_algo_seq_print_text(struct seq_file *seq, void *offset);
207__be32 batadv_skb_crc32(struct sk_buff *skb, u8 *payload_ptr);
208
209
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217
218
219enum batadv_dbg_level {
220 BATADV_DBG_BATMAN = BIT(0),
221 BATADV_DBG_ROUTES = BIT(1),
222 BATADV_DBG_TT = BIT(2),
223 BATADV_DBG_BLA = BIT(3),
224 BATADV_DBG_DAT = BIT(4),
225 BATADV_DBG_NC = BIT(5),
226 BATADV_DBG_ALL = 63,
227};
228
229#ifdef CONFIG_BATMAN_ADV_DEBUG
230int batadv_debug_log(struct batadv_priv *bat_priv, const char *fmt, ...)
231__printf(2, 3);
232
233#define batadv_dbg(type, bat_priv, fmt, arg...) \
234 do { \
235 if (atomic_read(&bat_priv->log_level) & type) \
236 batadv_debug_log(bat_priv, fmt, ## arg);\
237 } \
238 while (0)
239#else
240__printf(3, 4)
241static inline void batadv_dbg(int type __always_unused,
242 struct batadv_priv *bat_priv __always_unused,
243 const char *fmt __always_unused, ...)
244{
245}
246#endif
247
248#define batadv_info(net_dev, fmt, arg...) \
249 do { \
250 struct net_device *_netdev = (net_dev); \
251 struct batadv_priv *_batpriv = netdev_priv(_netdev); \
252 batadv_dbg(BATADV_DBG_ALL, _batpriv, fmt, ## arg); \
253 pr_info("%s: " fmt, _netdev->name, ## arg); \
254 } while (0)
255#define batadv_err(net_dev, fmt, arg...) \
256 do { \
257 struct net_device *_netdev = (net_dev); \
258 struct batadv_priv *_batpriv = netdev_priv(_netdev); \
259 batadv_dbg(BATADV_DBG_ALL, _batpriv, fmt, ## arg); \
260 pr_err("%s: " fmt, _netdev->name, ## arg); \
261 } while (0)
262
263
264
265
266
267static inline int batadv_compare_eth(const void *data1, const void *data2)
268{
269 return (memcmp(data1, data2, ETH_ALEN) == 0 ? 1 : 0);
270}
271
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277
278
279static inline bool batadv_has_timed_out(unsigned long timestamp,
280 unsigned int timeout)
281{
282 return time_is_before_jiffies(timestamp + msecs_to_jiffies(timeout));
283}
284
285#define batadv_atomic_dec_not_zero(v) atomic_add_unless((v), -1, 0)
286
287
288#define batadv_smallest_signed_int(x) (1u << (7u + 8u * (sizeof(x) - 1u)))
289
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298
299
300#define batadv_seq_before(x, y) ({typeof(x) _d1 = (x); \
301 typeof(y) _d2 = (y); \
302 typeof(x) _dummy = (_d1 - _d2); \
303 (void) (&_d1 == &_d2); \
304 _dummy > batadv_smallest_signed_int(_dummy); })
305#define batadv_seq_after(x, y) batadv_seq_before(y, x)
306
307
308static inline void batadv_add_counter(struct batadv_priv *bat_priv, size_t idx,
309 size_t count)
310{
311 this_cpu_add(bat_priv->bat_counters[idx], count);
312}
313
314#define batadv_inc_counter(b, i) batadv_add_counter(b, i, 1)
315
316
317static inline uint64_t batadv_sum_counter(struct batadv_priv *bat_priv,
318 size_t idx)
319{
320 uint64_t *counters, sum = 0;
321 int cpu;
322
323 for_each_possible_cpu(cpu) {
324 counters = per_cpu_ptr(bat_priv->bat_counters, cpu);
325 sum += counters[idx];
326 }
327
328 return sum;
329}
330
331
332
333
334
335#define BATADV_SKB_CB(__skb) ((struct batadv_skb_cb *)&((__skb)->cb[0]))
336
337void batadv_tvlv_container_register(struct batadv_priv *bat_priv,
338 uint8_t type, uint8_t version,
339 void *tvlv_value, uint16_t tvlv_value_len);
340uint16_t batadv_tvlv_container_ogm_append(struct batadv_priv *bat_priv,
341 unsigned char **packet_buff,
342 int *packet_buff_len,
343 int packet_min_len);
344void batadv_tvlv_ogm_receive(struct batadv_priv *bat_priv,
345 struct batadv_ogm_packet *batadv_ogm_packet,
346 struct batadv_orig_node *orig_node);
347void batadv_tvlv_container_unregister(struct batadv_priv *bat_priv,
348 uint8_t type, uint8_t version);
349
350void batadv_tvlv_handler_register(struct batadv_priv *bat_priv,
351 void (*optr)(struct batadv_priv *bat_priv,
352 struct batadv_orig_node *orig,
353 uint8_t flags,
354 void *tvlv_value,
355 uint16_t tvlv_value_len),
356 int (*uptr)(struct batadv_priv *bat_priv,
357 uint8_t *src, uint8_t *dst,
358 void *tvlv_value,
359 uint16_t tvlv_value_len),
360 uint8_t type, uint8_t version, uint8_t flags);
361void batadv_tvlv_handler_unregister(struct batadv_priv *bat_priv,
362 uint8_t type, uint8_t version);
363int batadv_tvlv_containers_process(struct batadv_priv *bat_priv,
364 bool ogm_source,
365 struct batadv_orig_node *orig_node,
366 uint8_t *src, uint8_t *dst,
367 void *tvlv_buff, uint16_t tvlv_buff_len);
368void batadv_tvlv_unicast_send(struct batadv_priv *bat_priv, uint8_t *src,
369 uint8_t *dst, uint8_t type, uint8_t version,
370 void *tvlv_value, uint16_t tvlv_value_len);
371unsigned short batadv_get_vid(struct sk_buff *skb, size_t header_len);
372
373#endif
374