1 /* 2 * ng_l2cap_var.h 3 */ 4 5 /*- 6 * SPDX-License-Identifier: BSD-2-Clause 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 */ 34 35 #ifndef _NETGRAPH_L2CAP_VAR_H_ 36 #define _NETGRAPH_L2CAP_VAR_H_ 37 38 /* MALLOC decalation */ 39 #ifdef NG_SEPARATE_MALLOC 40 MALLOC_DECLARE(M_NETGRAPH_L2CAP); 41 #else 42 #define M_NETGRAPH_L2CAP M_NETGRAPH 43 #endif /* NG_SEPARATE_MALLOC */ 44 45 /* Debug */ 46 #define NG_L2CAP_ALERT if (l2cap->debug >= NG_L2CAP_ALERT_LEVEL) printf 47 #define NG_L2CAP_ERR if (l2cap->debug >= NG_L2CAP_ERR_LEVEL) printf 48 #define NG_L2CAP_WARN if (l2cap->debug >= NG_L2CAP_WARN_LEVEL) printf 49 #define NG_L2CAP_INFO if (l2cap->debug >= NG_L2CAP_INFO_LEVEL) printf 50 51 /* Wrapper around m_pullup */ 52 #define NG_L2CAP_M_PULLUP(m, s) \ 53 do { \ 54 if ((m)->m_len < (s)) \ 55 (m) = m_pullup((m), (s)); \ 56 if ((m) == NULL) \ 57 NG_L2CAP_ALERT("%s: %s - m_pullup(%zd) failed\n", \ 58 __func__, NG_NODE_NAME(l2cap->node), (s)); \ 59 } while (0) 60 61 /* 62 * L2CAP signaling command ident's are assigned relative to the connection, 63 * because there is only one signaling channel (cid == 0x01) for every 64 * connection. So up to 254 (0xff - 0x01) L2CAP commands can be pending at the 65 * same time for the same connection. 66 */ 67 68 #define NG_L2CAP_NULL_IDENT 0x00 /* DO NOT USE THIS IDENT */ 69 #define NG_L2CAP_FIRST_IDENT 0x01 /* dynamically alloc. (start) */ 70 #define NG_L2CAP_LAST_IDENT 0xff /* dynamically alloc. (end) */ 71 72 /* 73 * L2CAP (Node private) 74 */ 75 76 struct ng_l2cap_con; 77 struct ng_l2cap_chan; 78 79 typedef struct ng_l2cap { 80 node_p node; /* node ptr */ 81 82 ng_l2cap_node_debug_ep debug; /* debug level */ 83 ng_l2cap_node_flags_ep flags; /* L2CAP node flags */ 84 ng_l2cap_node_auto_discon_ep discon_timo; /* auto discon. timeout */ 85 86 u_int16_t pkt_size; /* max. ACL packet size */ 87 u_int16_t num_pkts; /* out queue size */ 88 bdaddr_t bdaddr; /* unit BDADDR */ 89 90 hook_p hci; /* HCI downstream hook */ 91 hook_p l2c; /* L2CAP upstream hook */ 92 hook_p ctl; /* control hook */ 93 94 LIST_HEAD(, ng_l2cap_con) con_list; /* ACL connections */ 95 96 u_int16_t cid; /* last allocated CID */ 97 u_int16_t lecid; /* last allocated CID for LE */ 98 99 LIST_HEAD(, ng_l2cap_chan) chan_list; /* L2CAP channels */ 100 } ng_l2cap_t; 101 typedef ng_l2cap_t * ng_l2cap_p; 102 103 /* 104 * L2CAP connection descriptor 105 */ 106 107 struct ng_l2cap_cmd; 108 109 typedef struct ng_l2cap_con { 110 ng_l2cap_p l2cap; /* pointer to L2CAP */ 111 112 u_int16_t state; /* ACL connection state */ 113 u_int16_t flags; /* ACL connection flags */ 114 115 int32_t refcnt; /* reference count */ 116 117 bdaddr_t remote; /* remote unit address */ 118 u_int16_t con_handle; /* ACL connection handle */ 119 struct callout con_timo; /* connection timeout */ 120 121 u_int8_t ident; /* last allocated ident */ 122 uint8_t linktype; 123 uint8_t encryption; 124 125 TAILQ_HEAD(, ng_l2cap_cmd) cmd_list; /* pending L2CAP cmds */ 126 127 struct mbuf *tx_pkt; /* xmitted L2CAP packet */ 128 int pending; /* num. of pending pkts */ 129 130 struct mbuf *rx_pkt; /* received L2CAP packet */ 131 int rx_pkt_len; /* packet len. so far */ 132 133 LIST_ENTRY(ng_l2cap_con) next; /* link */ 134 } ng_l2cap_con_t; 135 typedef ng_l2cap_con_t * ng_l2cap_con_p; 136 137 /* 138 * L2CAP channel descriptor 139 */ 140 141 typedef struct ng_l2cap_chan { 142 ng_l2cap_con_p con; /* pointer to connection */ 143 144 u_int16_t state; /* channel state */ 145 146 u_int8_t cfg_state; /* configuration state */ 147 #define NG_L2CAP_CFG_IN (1 << 0) /* incoming cfg path done */ 148 #define NG_L2CAP_CFG_OUT (1 << 1) /* outgoing cfg path done */ 149 #define NG_L2CAP_CFG_BOTH (NG_L2CAP_CFG_IN|NG_L2CAP_CFG_OUT) 150 151 u_int8_t ident; /* last L2CAP req. ident */ 152 153 u_int16_t psm; /* channel PSM */ 154 u_int16_t scid; /* source channel ID */ 155 u_int16_t dcid; /* destination channel ID */ 156 157 uint16_t idtype; 158 u_int16_t imtu; /* incoming channel MTU */ 159 ng_l2cap_flow_t iflow; /* incoming flow control */ 160 161 u_int16_t omtu; /* outgoing channel MTU */ 162 ng_l2cap_flow_t oflow; /* outgoing flow control */ 163 164 u_int16_t flush_timo; /* flush timeout */ 165 u_int16_t link_timo; /* link timeout */ 166 167 LIST_ENTRY(ng_l2cap_chan) next; /* link */ 168 } ng_l2cap_chan_t; 169 typedef ng_l2cap_chan_t * ng_l2cap_chan_p; 170 171 /* 172 * L2CAP command descriptor 173 */ 174 175 typedef struct ng_l2cap_cmd { 176 ng_l2cap_con_p con; /* L2CAP connection */ 177 ng_l2cap_chan_p ch; /* L2CAP channel */ 178 179 u_int16_t flags; /* command flags */ 180 #define NG_L2CAP_CMD_PENDING (1 << 0) /* command is pending */ 181 182 u_int8_t code; /* L2CAP command opcode */ 183 u_int8_t ident; /* L2CAP command ident */ 184 u_int32_t token; /* L2CA message token */ 185 186 struct callout timo; /* RTX/ERTX timeout */ 187 188 struct mbuf *aux; /* optional data */ 189 190 TAILQ_ENTRY(ng_l2cap_cmd) next; /* link */ 191 } ng_l2cap_cmd_t; 192 typedef ng_l2cap_cmd_t * ng_l2cap_cmd_p; 193 194 #endif /* ndef _NETGRAPH_L2CAP_VAR_H_ */ 195