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| Current File : //sys/netgraph/bluetooth/l2cap/ng_l2cap_var.h |
/*
* ng_l2cap_var.h
*/
/*-
* Copyright (c) 2001 Maksim Yevmenkin <m_evmenkin@yahoo.com>
* 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 AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
*
* $Id: ng_l2cap_var.h,v 1.2 2003/04/28 21:44:59 max Exp $
* $FreeBSD: release/9.1.0/sys/netgraph/bluetooth/l2cap/ng_l2cap_var.h 139823 2005-01-07 01:45:51Z imp $
*/
#ifndef _NETGRAPH_L2CAP_VAR_H_
#define _NETGRAPH_L2CAP_VAR_H_
/* MALLOC decalation */
#ifdef NG_SEPARATE_MALLOC
MALLOC_DECLARE(M_NETGRAPH_L2CAP);
#else
#define M_NETGRAPH_L2CAP M_NETGRAPH
#endif /* NG_SEPARATE_MALLOC */
/* Debug */
#define NG_L2CAP_ALERT if (l2cap->debug >= NG_L2CAP_ALERT_LEVEL) printf
#define NG_L2CAP_ERR if (l2cap->debug >= NG_L2CAP_ERR_LEVEL) printf
#define NG_L2CAP_WARN if (l2cap->debug >= NG_L2CAP_WARN_LEVEL) printf
#define NG_L2CAP_INFO if (l2cap->debug >= NG_L2CAP_INFO_LEVEL) printf
/* Wrapper around m_pullup */
#define NG_L2CAP_M_PULLUP(m, s) \
do { \
if ((m)->m_len < (s)) \
(m) = m_pullup((m), (s)); \
if ((m) == NULL) \
NG_L2CAP_ALERT("%s: %s - m_pullup(%zd) failed\n", \
__func__, NG_NODE_NAME(l2cap->node), (s)); \
} while (0)
/*
* L2CAP signaling command ident's are assigned relative to the connection,
* because there is only one signaling channel (cid == 0x01) for every
* connection. So up to 254 (0xff - 0x01) L2CAP commands can be pending at the
* same time for the same connection.
*/
#define NG_L2CAP_NULL_IDENT 0x00 /* DO NOT USE THIS IDENT */
#define NG_L2CAP_FIRST_IDENT 0x01 /* dynamically alloc. (start) */
#define NG_L2CAP_LAST_IDENT 0xff /* dynamically alloc. (end) */
/*
* L2CAP (Node private)
*/
struct ng_l2cap_con;
struct ng_l2cap_chan;
typedef struct ng_l2cap {
node_p node; /* node ptr */
ng_l2cap_node_debug_ep debug; /* debug level */
ng_l2cap_node_flags_ep flags; /* L2CAP node flags */
ng_l2cap_node_auto_discon_ep discon_timo; /* auto discon. timeout */
u_int16_t pkt_size; /* max. ACL packet size */
u_int16_t num_pkts; /* out queue size */
bdaddr_t bdaddr; /* unit BDADDR */
hook_p hci; /* HCI downstream hook */
hook_p l2c; /* L2CAP upstream hook */
hook_p ctl; /* control hook */
LIST_HEAD(, ng_l2cap_con) con_list; /* ACL connections */
u_int16_t cid; /* last allocated CID */
LIST_HEAD(, ng_l2cap_chan) chan_list; /* L2CAP channels */
} ng_l2cap_t;
typedef ng_l2cap_t * ng_l2cap_p;
/*
* L2CAP connection descriptor
*/
struct ng_l2cap_cmd;
typedef struct ng_l2cap_con {
ng_l2cap_p l2cap; /* pointer to L2CAP */
u_int16_t state; /* ACL connection state */
u_int16_t flags; /* ACL connection flags */
int32_t refcnt; /* reference count */
bdaddr_t remote; /* remote unit address */
u_int16_t con_handle; /* ACL connection handle */
struct callout con_timo; /* connection timeout */
u_int8_t ident; /* last allocated ident */
TAILQ_HEAD(, ng_l2cap_cmd) cmd_list; /* pending L2CAP cmds */
struct mbuf *tx_pkt; /* xmitted L2CAP packet */
int pending; /* num. of pending pkts */
struct mbuf *rx_pkt; /* received L2CAP packet */
int rx_pkt_len; /* packet len. so far */
LIST_ENTRY(ng_l2cap_con) next; /* link */
} ng_l2cap_con_t;
typedef ng_l2cap_con_t * ng_l2cap_con_p;
/*
* L2CAP channel descriptor
*/
typedef struct ng_l2cap_chan {
ng_l2cap_con_p con; /* pointer to connection */
u_int16_t state; /* channel state */
u_int8_t cfg_state; /* configuration state */
#define NG_L2CAP_CFG_IN (1 << 0) /* incoming cfg path done */
#define NG_L2CAP_CFG_OUT (1 << 1) /* outgoing cfg path done */
#define NG_L2CAP_CFG_BOTH (NG_L2CAP_CFG_IN|NG_L2CAP_CFG_OUT)
u_int8_t ident; /* last L2CAP req. ident */
u_int16_t psm; /* channel PSM */
u_int16_t scid; /* source channel ID */
u_int16_t dcid; /* destination channel ID */
u_int16_t imtu; /* incoming channel MTU */
ng_l2cap_flow_t iflow; /* incoming flow control */
u_int16_t omtu; /* outgoing channel MTU */
ng_l2cap_flow_t oflow; /* outgoing flow control */
u_int16_t flush_timo; /* flush timeout */
u_int16_t link_timo; /* link timeout */
LIST_ENTRY(ng_l2cap_chan) next; /* link */
} ng_l2cap_chan_t;
typedef ng_l2cap_chan_t * ng_l2cap_chan_p;
/*
* L2CAP command descriptor
*/
typedef struct ng_l2cap_cmd {
ng_l2cap_con_p con; /* L2CAP connection */
ng_l2cap_chan_p ch; /* L2CAP channel */
u_int16_t flags; /* command flags */
#define NG_L2CAP_CMD_PENDING (1 << 0) /* command is pending */
u_int8_t code; /* L2CAP command opcode */
u_int8_t ident; /* L2CAP command ident */
u_int32_t token; /* L2CA message token */
struct callout timo; /* RTX/ERTX timeout */
struct mbuf *aux; /* optional data */
TAILQ_ENTRY(ng_l2cap_cmd) next; /* link */
} ng_l2cap_cmd_t;
typedef ng_l2cap_cmd_t * ng_l2cap_cmd_p;
#endif /* ndef _NETGRAPH_L2CAP_VAR_H_ */