summaryrefslogtreecommitdiff
path: root/net/batman-adv/types.h
blob: fab70e8b16eec08ae8301850768b3691a035652b (plain)
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
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
/*
 * 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_TYPES_H_
#define _NET_BATMAN_ADV_TYPES_H_

#include "packet.h"
#include "bitarray.h"

#define BAT_HEADER_LEN (sizeof(struct ethhdr) + \
	((sizeof(struct unicast_packet) > sizeof(struct bcast_packet) ? \
	 sizeof(struct unicast_packet) : \
	 sizeof(struct bcast_packet))))


struct hard_iface {
	struct list_head list;
	int16_t if_num;
	char if_status;
	struct net_device *net_dev;
	atomic_t seqno;
	atomic_t frag_seqno;
	unsigned char *packet_buff;
	int packet_len;
	struct kobject *hardif_obj;
	atomic_t refcount;
	struct packet_type batman_adv_ptype;
	struct net_device *soft_iface;
	struct rcu_head rcu;
};

/**
 *	orig_node - structure for orig_list maintaining nodes of mesh
 *	@primary_addr: hosts primary interface address
 *	@last_valid: when last packet from this node was received
 *	@bcast_seqno_reset: time when the broadcast seqno window was reset
 *	@batman_seqno_reset: time when the batman seqno window was reset
 *	@gw_flags: flags related to gateway class
 *	@flags: for now only VIS_SERVER flag
 *	@last_real_seqno: last and best known squence number
 *	@last_ttl: ttl of last received packet
 *	@last_bcast_seqno: last broadcast sequence number received by this host
 *
 *	@candidates: how many candidates are available
 *	@selected: next bonding candidate
 */
struct orig_node {
	uint8_t orig[ETH_ALEN];
	uint8_t primary_addr[ETH_ALEN];
	struct neigh_node __rcu *router; /* rcu protected pointer */
	unsigned long *bcast_own;
	uint8_t *bcast_own_sum;
	unsigned long last_valid;
	unsigned long bcast_seqno_reset;
	unsigned long batman_seqno_reset;
	uint8_t gw_flags;
	uint8_t flags;
	unsigned char *tt_buff;
	int16_t tt_buff_len;
	uint32_t last_real_seqno;
	uint8_t last_ttl;
	unsigned long bcast_bits[NUM_WORDS];
	uint32_t last_bcast_seqno;
	struct hlist_head neigh_list;
	struct list_head frag_list;
	spinlock_t neigh_list_lock; /* protects neigh_list and router */
	atomic_t refcount;
	struct rcu_head rcu;
	struct hlist_node hash_entry;
	struct bat_priv *bat_priv;
	unsigned long last_frag_packet;
	/* ogm_cnt_lock protects: bcast_own, bcast_own_sum,
	 * neigh_node->real_bits, neigh_node->real_packet_count */
	spinlock_t ogm_cnt_lock;
	/* bcast_seqno_lock protects bcast_bits, last_bcast_seqno */
	spinlock_t bcast_seqno_lock;
	atomic_t bond_candidates;
	struct list_head bond_list;
};

struct gw_node {
	struct hlist_node list;
	struct orig_node *orig_node;
	unsigned long deleted;
	atomic_t refcount;
	struct rcu_head rcu;
};

/**
 *	neigh_node
 *	@last_valid: when last packet via this neighbor was received
 */
struct neigh_node {
	struct hlist_node list;
	uint8_t addr[ETH_ALEN];
	uint8_t real_packet_count;
	uint8_t tq_recv[TQ_GLOBAL_WINDOW_SIZE];
	uint8_t tq_index;
	uint8_t tq_avg;
	uint8_t last_ttl;
	struct list_head bonding_list;
	unsigned long last_valid;
	unsigned long real_bits[NUM_WORDS];
	atomic_t refcount;
	struct rcu_head rcu;
	struct orig_node *orig_node;
	struct hard_iface *if_incoming;
	spinlock_t tq_lock;	/* protects: tq_recv, tq_index */
};


struct bat_priv {
	atomic_t mesh_state;
	struct net_device_stats stats;
	atomic_t aggregated_ogms;	/* boolean */
	atomic_t bonding;		/* boolean */
	atomic_t fragmentation;		/* boolean */
	atomic_t vis_mode;		/* VIS_TYPE_* */
	atomic_t gw_mode;		/* GW_MODE_* */
	atomic_t gw_sel_class;		/* uint */
	atomic_t gw_bandwidth;		/* gw bandwidth */
	atomic_t orig_interval;		/* uint */
	atomic_t hop_penalty;		/* uint */
	atomic_t log_level;		/* uint */
	atomic_t bcast_seqno;
	atomic_t bcast_queue_left;
	atomic_t batman_queue_left;
	char num_ifaces;
	struct debug_log *debug_log;
	struct kobject *mesh_obj;
	struct dentry *debug_dir;
	struct hlist_head forw_bat_list;
	struct hlist_head forw_bcast_list;
	struct hlist_head gw_list;
	struct hlist_head softif_neigh_vids;
	struct list_head vis_send_list;
	struct hashtable_t *orig_hash;
	struct hashtable_t *tt_local_hash;
	struct hashtable_t *tt_global_hash;
	struct hashtable_t *vis_hash;
	spinlock_t forw_bat_list_lock; /* protects forw_bat_list */
	spinlock_t forw_bcast_list_lock; /* protects  */
	spinlock_t tt_lhash_lock; /* protects tt_local_hash */
	spinlock_t tt_ghash_lock; /* protects tt_global_hash */
	spinlock_t gw_list_lock; /* protects gw_list and curr_gw */
	spinlock_t vis_hash_lock; /* protects vis_hash */
	spinlock_t vis_list_lock; /* protects vis_info::recv_list */
	spinlock_t softif_neigh_lock; /* protects soft-interface neigh list */
	spinlock_t softif_neigh_vid_lock; /* protects soft-interface vid list */
	int16_t num_local_tt;
	atomic_t tt_local_changed;
	struct delayed_work tt_work;
	struct delayed_work orig_work;
	struct delayed_work vis_work;
	struct gw_node __rcu *curr_gw;  /* rcu protected pointer */
	struct hard_iface __rcu *primary_if;  /* rcu protected pointer */
	struct vis_info *my_vis_info;
};

struct socket_client {
	struct list_head queue_list;
	unsigned int queue_len;
	unsigned char index;
	spinlock_t lock; /* protects queue_list, queue_len, index */
	wait_queue_head_t queue_wait;
	struct bat_priv *bat_priv;
};

struct socket_packet {
	struct list_head list;
	size_t icmp_len;
	struct icmp_packet_rr icmp_packet;
};

struct tt_local_entry {
	uint8_t addr[ETH_ALEN];
	unsigned long last_seen;
	char never_purge;
	struct hlist_node hash_entry;
};

struct tt_global_entry {
	uint8_t addr[ETH_ALEN];
	struct orig_node *orig_node;
	struct hlist_node hash_entry;
};

/**
 *	forw_packet - structure for forw_list maintaining packets to be
 *	              send/forwarded
 */
struct forw_packet {
	struct hlist_node list;
	unsigned long send_time;
	uint8_t own;
	struct sk_buff *skb;
	uint16_t packet_len;
	uint32_t direct_link_flags;
	uint8_t num_packets;
	struct delayed_work delayed_work;
	struct hard_iface *if_incoming;
};

/* While scanning for vis-entries of a particular vis-originator
 * this list collects its interfaces to create a subgraph/cluster
 * out of them later
 */
struct if_list_entry {
	uint8_t addr[ETH_ALEN];
	bool primary;
	struct hlist_node list;
};

struct debug_log {
	char log_buff[LOG_BUF_LEN];
	unsigned long log_start;
	unsigned long log_end;
	spinlock_t lock; /* protects log_buff, log_start and log_end */
	wait_queue_head_t queue_wait;
};

struct frag_packet_list_entry {
	struct list_head list;
	uint16_t seqno;
	struct sk_buff *skb;
};

struct vis_info {
	unsigned long       first_seen;
	struct list_head    recv_list;
			    /* list of server-neighbors we received a vis-packet
			     * from.  we should not reply to them. */
	struct list_head send_list;
	struct kref refcount;
	struct hlist_node hash_entry;
	struct bat_priv *bat_priv;
	/* this packet might be part of the vis send queue. */
	struct sk_buff *skb_packet;
	/* vis_info may follow here*/
} __packed;

struct vis_info_entry {
	uint8_t  src[ETH_ALEN];
	uint8_t  dest[ETH_ALEN];
	uint8_t  quality;	/* quality = 0 client */
} __packed;

struct recvlist_node {
	struct list_head list;
	uint8_t mac[ETH_ALEN];
};

struct softif_neigh_vid {
	struct hlist_node list;
	struct bat_priv *bat_priv;
	short vid;
	atomic_t refcount;
	struct softif_neigh __rcu *softif_neigh;
	struct rcu_head rcu;
	struct hlist_head softif_neigh_list;
};

struct softif_neigh {
	struct hlist_node list;
	uint8_t addr[ETH_ALEN];
	unsigned long last_seen;
	atomic_t refcount;
	struct rcu_head rcu;
};

#endif /* _NET_BATMAN_ADV_TYPES_H_ */