/* $NetBSD: btpand.h,v 1.5 2016/10/04 21:40:31 joerg Exp $ */
/*-
* Copyright (c) 2008-2009 Iain Hibbert
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/types.h>
#include <sys/queue.h>
#include <net/if.h>
#include <net/if_ether.h>
#include <assert.h>
#include <bluetooth.h>
#include <event.h>
#include <stdbool.h>
#include <stdlib.h>
#include <string.h>
#include <syslog.h>
typedef struct channel channel_t;
typedef struct pfilter pfilter_t;
typedef struct mfilter mfilter_t;
typedef struct packet packet_t;
typedef struct pkthdr pkthdr_t;
typedef struct pktlist pktlist_t;
typedef struct exthdr exthdr_t;
typedef struct extlist extlist_t;
LIST_HEAD(chlist, channel);
STAILQ_HEAD(extlist, exthdr);
STAILQ_HEAD(pktlist, pkthdr);
enum channel_state {
CHANNEL_CLOSED,
CHANNEL_WAIT_CONNECT_REQ,
CHANNEL_WAIT_CONNECT_RSP,
CHANNEL_OPEN
};
#define CHANNEL_MAXQLEN 128
/* BNEP or tap channel */
struct channel {
enum channel_state state;
bool oactive;
uint8_t laddr[ETHER_ADDR_LEN];
uint8_t raddr[ETHER_ADDR_LEN];
size_t mru;
size_t mtu;
int npfilter;
pfilter_t * pfilter;
int nmfilter;
mfilter_t * mfilter;
pktlist_t pktlist;
int qlen;
int fd;
struct event rd_ev;
struct event wr_ev;
uint8_t * sendbuf;
bool (*send)(channel_t *, packet_t *);
bool (*recv)(packet_t *);
void (*down)(channel_t *);
int tick;
int refcnt;
LIST_ENTRY(channel) next;
};
/* network protocol type filter */
struct pfilter {
uint16_t start;
uint16_t end;
};
/* multicast address filter */
struct mfilter {
uint8_t start[ETHER_ADDR_LEN];
uint8_t end[ETHER_ADDR_LEN];
};
/* packet data buffer */
struct packet {
channel_t * chan; /* source channel */
uint8_t * dst; /* dest address */
uint8_t * src; /* source address */
uint8_t * type; /* protocol type */
uint8_t * ptr; /* data pointer */
size_t len; /* data length */
int refcnt; /* reference count */
extlist_t extlist;/* extension headers */
uint8_t buf[0]; /* data starts here */
};
/* extension header */
struct exthdr {
STAILQ_ENTRY(exthdr) next;
uint8_t * ptr;
uint8_t len;
};
/* packet header */
struct pkthdr {
STAILQ_ENTRY(pkthdr) next;
packet_t * data;
};
/* global variables */
extern const char * control_path;
extern const char * service_type;
extern const char * service_name;
extern const char * service_desc;
extern const char * interface_name;
extern bdaddr_t local_bdaddr;
extern bdaddr_t remote_bdaddr;
extern uint16_t l2cap_psm;
extern int l2cap_mode;
extern uint16_t service_class;
extern int server_limit;
/*
* Bluetooth addresses are stored the other way around than
* Ethernet addresses even though they are of the same family
*/
static inline void
b2eaddr(void *dst, bdaddr_t *src)
{
uint8_t *d = dst;
int i;
for (i = 0; i < ETHER_ADDR_LEN; i++)
d[i] = src->b[ETHER_ADDR_LEN - i - 1];
}
#define log_err(fmt, args...) syslog(LOG_ERR, fmt , ##args)
#define log_info(fmt, args...) syslog(LOG_INFO, fmt , ##args)
#define log_notice(fmt, args...) syslog(LOG_NOTICE, fmt , ##args)
#define log_debug(fmt, args...) syslog(LOG_DEBUG, "%s: " fmt, __func__ , ##args)
/* bnep.c */
bool bnep_send(channel_t *, packet_t *);
bool bnep_recv(packet_t *);
void bnep_send_control(channel_t *, int, ...);
/* channel.c */
void channel_init(void);
channel_t * channel_alloc(void);
bool channel_open(channel_t *, int);
void channel_close(channel_t *);
void channel_free(channel_t *);
void channel_timeout(channel_t *, int);
void channel_put(channel_t *, packet_t *);
/* client.c */
void client_init(void);
/* packet.c */
packet_t * packet_alloc(channel_t *);
void packet_free(packet_t *);
void packet_adj(packet_t *, size_t);
pkthdr_t * pkthdr_alloc(packet_t *);
void pkthdr_free(pkthdr_t *);
/* server.c */
void server_init(void);
/* tap.c */
void tap_init(void);
