6 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
8 * Copyright (c) 2001 Maksim Yevmenkin <m_evmenkin@yahoo.com>
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * $Id: ng_l2cap_var.h,v 1.2 2003/04/28 21:44:59 max Exp $
36 #ifndef _NETGRAPH_L2CAP_VAR_H_
37 #define _NETGRAPH_L2CAP_VAR_H_
39 /* MALLOC decalation */
40 #ifdef NG_SEPARATE_MALLOC
41 MALLOC_DECLARE(M_NETGRAPH_L2CAP);
43 #define M_NETGRAPH_L2CAP M_NETGRAPH
44 #endif /* NG_SEPARATE_MALLOC */
47 #define NG_L2CAP_ALERT if (l2cap->debug >= NG_L2CAP_ALERT_LEVEL) printf
48 #define NG_L2CAP_ERR if (l2cap->debug >= NG_L2CAP_ERR_LEVEL) printf
49 #define NG_L2CAP_WARN if (l2cap->debug >= NG_L2CAP_WARN_LEVEL) printf
50 #define NG_L2CAP_INFO if (l2cap->debug >= NG_L2CAP_INFO_LEVEL) printf
52 /* Wrapper around m_pullup */
53 #define NG_L2CAP_M_PULLUP(m, s) \
55 if ((m)->m_len < (s)) \
56 (m) = m_pullup((m), (s)); \
58 NG_L2CAP_ALERT("%s: %s - m_pullup(%zd) failed\n", \
59 __func__, NG_NODE_NAME(l2cap->node), (s)); \
63 * L2CAP signaling command ident's are assigned relative to the connection,
64 * because there is only one signaling channel (cid == 0x01) for every
65 * connection. So up to 254 (0xff - 0x01) L2CAP commands can be pending at the
66 * same time for the same connection.
69 #define NG_L2CAP_NULL_IDENT 0x00 /* DO NOT USE THIS IDENT */
70 #define NG_L2CAP_FIRST_IDENT 0x01 /* dynamically alloc. (start) */
71 #define NG_L2CAP_LAST_IDENT 0xff /* dynamically alloc. (end) */
74 * L2CAP (Node private)
80 typedef struct ng_l2cap {
81 node_p node; /* node ptr */
83 ng_l2cap_node_debug_ep debug; /* debug level */
84 ng_l2cap_node_flags_ep flags; /* L2CAP node flags */
85 ng_l2cap_node_auto_discon_ep discon_timo; /* auto discon. timeout */
87 u_int16_t pkt_size; /* max. ACL packet size */
88 u_int16_t num_pkts; /* out queue size */
89 bdaddr_t bdaddr; /* unit BDADDR */
91 hook_p hci; /* HCI downstream hook */
92 hook_p l2c; /* L2CAP upstream hook */
93 hook_p ctl; /* control hook */
95 LIST_HEAD(, ng_l2cap_con) con_list; /* ACL connections */
97 u_int16_t cid; /* last allocated CID */
98 u_int16_t lecid; /* last allocated CID for LE */
100 LIST_HEAD(, ng_l2cap_chan) chan_list; /* L2CAP channels */
102 typedef ng_l2cap_t * ng_l2cap_p;
105 * L2CAP connection descriptor
110 typedef struct ng_l2cap_con {
111 ng_l2cap_p l2cap; /* pointer to L2CAP */
113 u_int16_t state; /* ACL connection state */
114 u_int16_t flags; /* ACL connection flags */
116 int32_t refcnt; /* reference count */
118 bdaddr_t remote; /* remote unit address */
119 u_int16_t con_handle; /* ACL connection handle */
120 struct callout con_timo; /* connection timeout */
122 u_int8_t ident; /* last allocated ident */
126 TAILQ_HEAD(, ng_l2cap_cmd) cmd_list; /* pending L2CAP cmds */
128 struct mbuf *tx_pkt; /* xmitted L2CAP packet */
129 int pending; /* num. of pending pkts */
131 struct mbuf *rx_pkt; /* received L2CAP packet */
132 int rx_pkt_len; /* packet len. so far */
134 LIST_ENTRY(ng_l2cap_con) next; /* link */
136 typedef ng_l2cap_con_t * ng_l2cap_con_p;
139 * L2CAP channel descriptor
142 typedef struct ng_l2cap_chan {
143 ng_l2cap_con_p con; /* pointer to connection */
145 u_int16_t state; /* channel state */
147 u_int8_t cfg_state; /* configuration state */
148 #define NG_L2CAP_CFG_IN (1 << 0) /* incoming cfg path done */
149 #define NG_L2CAP_CFG_OUT (1 << 1) /* outgoing cfg path done */
150 #define NG_L2CAP_CFG_BOTH (NG_L2CAP_CFG_IN|NG_L2CAP_CFG_OUT)
152 u_int8_t ident; /* last L2CAP req. ident */
154 u_int16_t psm; /* channel PSM */
155 u_int16_t scid; /* source channel ID */
156 u_int16_t dcid; /* destination channel ID */
159 u_int16_t imtu; /* incoming channel MTU */
160 ng_l2cap_flow_t iflow; /* incoming flow control */
162 u_int16_t omtu; /* outgoing channel MTU */
163 ng_l2cap_flow_t oflow; /* outgoing flow control */
165 u_int16_t flush_timo; /* flush timeout */
166 u_int16_t link_timo; /* link timeout */
168 LIST_ENTRY(ng_l2cap_chan) next; /* link */
170 typedef ng_l2cap_chan_t * ng_l2cap_chan_p;
173 * L2CAP command descriptor
176 typedef struct ng_l2cap_cmd {
177 ng_l2cap_con_p con; /* L2CAP connection */
178 ng_l2cap_chan_p ch; /* L2CAP channel */
180 u_int16_t flags; /* command flags */
181 #define NG_L2CAP_CMD_PENDING (1 << 0) /* command is pending */
183 u_int8_t code; /* L2CAP command opcode */
184 u_int8_t ident; /* L2CAP command ident */
185 u_int32_t token; /* L2CA message token */
187 struct callout timo; /* RTX/ERTX timeout */
189 struct mbuf *aux; /* optional data */
191 TAILQ_ENTRY(ng_l2cap_cmd) next; /* link */
193 typedef ng_l2cap_cmd_t * ng_l2cap_cmd_p;
195 #endif /* ndef _NETGRAPH_L2CAP_VAR_H_ */