1 /* $NetBSD: btpand.h,v 1.1 2008/08/17 13:20:57 plunky Exp $ */
2
3 /*-
4 * Copyright (c) 2008 Iain Hibbert
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28 /* $FreeBSD: stable/9/usr.sbin/bluetooth/btpand/btpand.h 188013 2009-02-02 18:08:22Z emax $ */
29
30 #include <sys/types.h>
31 #include <sys/queue.h>
32 #include <sys/socket.h>
33
34 #include <net/if.h>
35 #include <net/ethernet.h>
36
37 #include <assert.h>
38 #include <bluetooth.h>
39 #include <stdbool.h>
40 #include <stdlib.h>
41 #include <string.h>
42 #include <syslog.h>
43
44 #include "event.h"
45
46 #ifndef __arraycount
47 #define __arraycount(__x) (int)(sizeof((__x)) / sizeof((__x)[0]))
48 #endif
49
50 #ifndef L2CAP_PSM_INVALID
51 #define L2CAP_PSM_INVALID(psm) (((psm) & 0x0101) != 0x0001)
52 #endif
53
54 #ifndef L2CAP_PSM_BNEP
55 #define L2CAP_PSM_BNEP 15
56 #endif
57
58 typedef struct channel channel_t;
59 typedef struct pfilter pfilter_t;
60 typedef struct mfilter mfilter_t;
61 typedef struct packet packet_t;
62 typedef struct pkthdr pkthdr_t;
63 typedef struct pktlist pktlist_t;
64 typedef struct exthdr exthdr_t;
65 typedef struct extlist extlist_t;
66
67 LIST_HEAD(chlist, channel);
68 STAILQ_HEAD(extlist, exthdr);
69 STAILQ_HEAD(pktlist, pkthdr);
70
71 enum channel_state {
72 CHANNEL_CLOSED,
73 CHANNEL_WAIT_CONNECT_REQ,
74 CHANNEL_WAIT_CONNECT_RSP,
75 CHANNEL_OPEN,
76 };
77
78 #define CHANNEL_MAXQLEN 128
79
80 /* BNEP or tap channel */
81 struct channel {
82 enum channel_state state;
83 bool oactive;
84
85 uint8_t laddr[ETHER_ADDR_LEN];
86 uint8_t raddr[ETHER_ADDR_LEN];
87 size_t mru;
88 size_t mtu;
89
90 int npfilter;
91 pfilter_t * pfilter;
92
93 int nmfilter;
94 mfilter_t * mfilter;
95
96 pktlist_t pktlist;
97 int qlen;
98
99 int fd;
100 struct event rd_ev;
101 struct event wr_ev;
102 uint8_t * sendbuf;
103
104 bool (*send)(channel_t *, packet_t *);
105 bool (*recv)(packet_t *);
106
107 int tick;
108
109 struct pidfh *pfh;
110
111 int refcnt;
112 LIST_ENTRY(channel) next;
113 };
114
115 /* network protocol type filter */
116 struct pfilter {
117 uint16_t start;
118 uint16_t end;
119 };
120
121 /* multicast address filter */
122 struct mfilter {
123 uint8_t start[ETHER_ADDR_LEN];
124 uint8_t end[ETHER_ADDR_LEN];
125 };
126
127 /* packet data buffer */
128 struct packet {
129 channel_t * chan; /* source channel */
130 uint8_t * dst; /* dest address */
131 uint8_t * src; /* source address */
132 uint8_t * type; /* protocol type */
133 uint8_t * ptr; /* data pointer */
134 size_t len; /* data length */
135 int refcnt; /* reference count */
136 extlist_t extlist;/* extension headers */
137 uint8_t buf[0]; /* data starts here */
138 };
139
140 /* extension header */
141 struct exthdr {
142 STAILQ_ENTRY(exthdr) next;
143 uint8_t * ptr;
144 uint8_t len;
145 };
146
147 /* packet header */
148 struct pkthdr {
149 STAILQ_ENTRY(pkthdr) next;
150 packet_t * data;
151 };
152
153 /* global variables */
154 extern const char * control_path;
155 extern const char * service_name;
156 extern const char * interface_name;
157 extern bdaddr_t local_bdaddr;
158 extern bdaddr_t remote_bdaddr;
159 extern uint16_t l2cap_psm;
160 extern int l2cap_mode;
161 extern uint16_t service_class;
162 extern int server_limit;
163
164 /*
165 * Bluetooth addresses are stored the other way around than
166 * Ethernet addresses even though they are of the same family
167 */
168 static inline void
b2eaddr(void * dst,bdaddr_t * src)169 b2eaddr(void *dst, bdaddr_t *src)
170 {
171 uint8_t *d = dst;
172 int i;
173
174 for (i = 0; i < ETHER_ADDR_LEN; i++)
175 d[i] = src->b[ETHER_ADDR_LEN - i - 1];
176 }
177
178 #define log_err(fmt, args...) syslog(LOG_ERR, fmt , ##args)
179 #define log_info(fmt, args...) syslog(LOG_INFO, fmt , ##args)
180 #define log_notice(fmt, args...) syslog(LOG_NOTICE, fmt , ##args)
181 #define log_debug(fmt, args...) syslog(LOG_DEBUG, "%s: " fmt, __func__ , ##args)
182
183 /* bnep.c */
184 bool bnep_send(channel_t *, packet_t *);
185 bool bnep_recv(packet_t *);
186 void bnep_send_control(channel_t *, uint8_t, ...);
187
188 /* channel.c */
189 void channel_init(void);
190 channel_t * channel_alloc(void);
191 bool channel_open(channel_t *, int);
192 void channel_close(channel_t *);
193 void channel_free(channel_t *);
194 void channel_timeout(channel_t *, int);
195 void channel_put(channel_t *, packet_t *);
196
197 /* client.c */
198 void client_init(void);
199
200 /* packet.c */
201 packet_t * packet_alloc(channel_t *);
202 void packet_free(packet_t *);
203 void packet_adj(packet_t *, size_t);
204 pkthdr_t * pkthdr_alloc(packet_t *);
205 void pkthdr_free(pkthdr_t *);
206
207 /* server.c */
208 void server_init(void);
209 void server_update(int);
210
211 /* tap.c */
212 void tap_init(void);
213