Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/netgraph/bluetooth/l2cap/ng_l2cap_var.h
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1 /* 2 * ng_l2cap_var.h 3 */ 4 5 /*- 6 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 7 * 8 * Copyright (c) 2001 Maksim Yevmenkin <m_evmenkin@yahoo.com> 9 * All rights reserved. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 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. 19 * 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 30 * SUCH DAMAGE. 31 * 32 * $Id: ng_l2cap_var.h,v 1.2 2003/04/28 21:44:59 max Exp $ 33 * $FreeBSD$ 34 */ 35 36 #ifndef _NETGRAPH_L2CAP_VAR_H_ 37 #define _NETGRAPH_L2CAP_VAR_H_ 38 39 /* MALLOC decalation */ 40 #ifdef NG_SEPARATE_MALLOC 41 MALLOC_DECLARE(M_NETGRAPH_L2CAP); 42 #else 43 #define M_NETGRAPH_L2CAP M_NETGRAPH 44 #endif /* NG_SEPARATE_MALLOC */ 45 46 /* Debug */ 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 51 52 /* Wrapper around m_pullup */ 53 #define NG_L2CAP_M_PULLUP(m, s) \ 54 do { \ 55 if ((m)->m_len < (s)) \ 56 (m) = m_pullup((m), (s)); \ 57 if ((m) == NULL) \ 58 NG_L2CAP_ALERT("%s: %s - m_pullup(%zd) failed\n", \ 59 __func__, NG_NODE_NAME(l2cap->node), (s)); \ 60 } while (0) 61 62 /* 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. 67 */ 68 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) */ 72 73 /* 74 * L2CAP (Node private) 75 */ 76 77 struct ng_l2cap_con; 78 struct ng_l2cap_chan; 79 80 typedef struct ng_l2cap { 81 node_p node; /* node ptr */ 82 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 */ 86 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 */ 90 91 hook_p hci; /* HCI downstream hook */ 92 hook_p l2c; /* L2CAP upstream hook */ 93 hook_p ctl; /* control hook */ 94 95 LIST_HEAD(, ng_l2cap_con) con_list; /* ACL connections */ 96 97 u_int16_t cid; /* last allocated CID */ 98 u_int16_t lecid; /* last allocated CID for LE */ 99 100 LIST_HEAD(, ng_l2cap_chan) chan_list; /* L2CAP channels */ 101 } ng_l2cap_t; 102 typedef ng_l2cap_t * ng_l2cap_p; 103 104 /* 105 * L2CAP connection descriptor 106 */ 107 108 struct ng_l2cap_cmd; 109 110 typedef struct ng_l2cap_con { 111 ng_l2cap_p l2cap; /* pointer to L2CAP */ 112 113 u_int16_t state; /* ACL connection state */ 114 u_int16_t flags; /* ACL connection flags */ 115 116 int32_t refcnt; /* reference count */ 117 118 bdaddr_t remote; /* remote unit address */ 119 u_int16_t con_handle; /* ACL connection handle */ 120 struct callout con_timo; /* connection timeout */ 121 122 u_int8_t ident; /* last allocated ident */ 123 uint8_t linktype; 124 uint8_t encryption; 125 126 TAILQ_HEAD(, ng_l2cap_cmd) cmd_list; /* pending L2CAP cmds */ 127 128 struct mbuf *tx_pkt; /* xmitted L2CAP packet */ 129 int pending; /* num. of pending pkts */ 130 131 struct mbuf *rx_pkt; /* received L2CAP packet */ 132 int rx_pkt_len; /* packet len. so far */ 133 134 LIST_ENTRY(ng_l2cap_con) next; /* link */ 135 } ng_l2cap_con_t; 136 typedef ng_l2cap_con_t * ng_l2cap_con_p; 137 138 /* 139 * L2CAP channel descriptor 140 */ 141 142 typedef struct ng_l2cap_chan { 143 ng_l2cap_con_p con; /* pointer to connection */ 144 145 u_int16_t state; /* channel state */ 146 147 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) 151 152 u_int8_t ident; /* last L2CAP req. ident */ 153 154 u_int16_t psm; /* channel PSM */ 155 u_int16_t scid; /* source channel ID */ 156 u_int16_t dcid; /* destination channel ID */ 157 158 uint16_t idtype; 159 u_int16_t imtu; /* incoming channel MTU */ 160 ng_l2cap_flow_t iflow; /* incoming flow control */ 161 162 u_int16_t omtu; /* outgoing channel MTU */ 163 ng_l2cap_flow_t oflow; /* outgoing flow control */ 164 165 u_int16_t flush_timo; /* flush timeout */ 166 u_int16_t link_timo; /* link timeout */ 167 168 LIST_ENTRY(ng_l2cap_chan) next; /* link */ 169 } ng_l2cap_chan_t; 170 typedef ng_l2cap_chan_t * ng_l2cap_chan_p; 171 172 /* 173 * L2CAP command descriptor 174 */ 175 176 typedef struct ng_l2cap_cmd { 177 ng_l2cap_con_p con; /* L2CAP connection */ 178 ng_l2cap_chan_p ch; /* L2CAP channel */ 179 180 u_int16_t flags; /* command flags */ 181 #define NG_L2CAP_CMD_PENDING (1 << 0) /* command is pending */ 182 183 u_int8_t code; /* L2CAP command opcode */ 184 u_int8_t ident; /* L2CAP command ident */ 185 u_int32_t token; /* L2CA message token */ 186 187 struct callout timo; /* RTX/ERTX timeout */ 188 189 struct mbuf *aux; /* optional data */ 190 191 TAILQ_ENTRY(ng_l2cap_cmd) next; /* link */ 192 } ng_l2cap_cmd_t; 193 typedef ng_l2cap_cmd_t * ng_l2cap_cmd_p; 194 195 #endif /* ndef _NETGRAPH_L2CAP_VAR_H_ */
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