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 58typedef struct channel channel_t; 59typedef struct pfilter pfilter_t; 60typedef struct mfilter mfilter_t; 61typedef struct packet packet_t; 62typedef struct pkthdr pkthdr_t; 63typedef struct pktlist pktlist_t; 64typedef struct exthdr exthdr_t; 65typedef struct extlist extlist_t; 66 67LIST_HEAD(chlist, channel); 68STAILQ_HEAD(extlist, exthdr); 69STAILQ_HEAD(pktlist, pkthdr); 70 71enum 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 */ 81struct 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 */ 116struct pfilter { 117 uint16_t start; 118 uint16_t end; 119}; 120 121/* multicast address filter */ 122struct mfilter { 123 uint8_t start[ETHER_ADDR_LEN]; 124 uint8_t end[ETHER_ADDR_LEN]; 125}; 126 127/* packet data buffer */ 128struct 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 */ 141struct exthdr { 142 STAILQ_ENTRY(exthdr) next; 143 uint8_t * ptr; 144 uint8_t len; 145}; 146 147/* packet header */ 148struct pkthdr { 149 STAILQ_ENTRY(pkthdr) next; 150 packet_t * data; 151}; 152 153/* global variables */ 154extern const char * control_path; 155extern const char * service_name; 156extern const char * interface_name; 157extern bdaddr_t local_bdaddr; 158extern bdaddr_t remote_bdaddr; 159extern uint16_t l2cap_psm; 160extern int l2cap_mode; 161extern uint16_t service_class; 162extern 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 */ 168static inline void 169b2eaddr(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 */ 184bool bnep_send(channel_t *, packet_t *); 185bool bnep_recv(packet_t *); 186void bnep_send_control(channel_t *, uint8_t, ...); 187 188/* channel.c */ 189void channel_init(void); 190channel_t * channel_alloc(void); 191bool channel_open(channel_t *, int); 192void channel_close(channel_t *); 193void channel_free(channel_t *); 194void channel_timeout(channel_t *, int); 195void channel_put(channel_t *, packet_t *); 196 197/* client.c */ 198void client_init(void); 199 200/* packet.c */ 201packet_t * packet_alloc(channel_t *); 202void packet_free(packet_t *); 203void packet_adj(packet_t *, size_t); 204pkthdr_t * pkthdr_alloc(packet_t *); 205void pkthdr_free(pkthdr_t *); 206 207/* server.c */ 208void server_init(void); 209void server_update(int); 210 211/* tap.c */ 212void tap_init(void); 213