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 /* $FreeBSD$ */ 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 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