1 /* 2 * ng_l2cap_var.h 3 * 4 * Copyright (c) 2001 Maksim Yevmenkin <m_evmenkin@yahoo.com> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 * $Id: ng_l2cap_var.h,v 1.2 2003/04/28 21:44:59 max Exp $ 29 * $FreeBSD$ 30 */ 31 32 #ifndef _NETGRAPH_L2CAP_VAR_H_ 33 #define _NETGRAPH_L2CAP_VAR_H_ 1 34 35 /* MALLOC decalation */ 36 #ifdef NG_SEPARATE_MALLOC 37 MALLOC_DECLARE(M_NETGRAPH_L2CAP); 38 #else 39 #define M_NETGRAPH_L2CAP M_NETGRAPH 40 #endif /* NG_SEPARATE_MALLOC */ 41 42 /* Debug */ 43 #define NG_L2CAP_ALERT if (l2cap->debug >= NG_L2CAP_ALERT_LEVEL) printf 44 #define NG_L2CAP_ERR if (l2cap->debug >= NG_L2CAP_ERR_LEVEL) printf 45 #define NG_L2CAP_WARN if (l2cap->debug >= NG_L2CAP_WARN_LEVEL) printf 46 #define NG_L2CAP_INFO if (l2cap->debug >= NG_L2CAP_INFO_LEVEL) printf 47 48 /* Wrapper around m_pullup */ 49 #define NG_L2CAP_M_PULLUP(m, s) \ 50 do { \ 51 if ((m)->m_len < (s)) \ 52 (m) = m_pullup((m), (s)); \ 53 if ((m) == NULL) \ 54 NG_L2CAP_ALERT("%s: %s - m_pullup(%d) failed\n", \ 55 __func__, NG_NODE_NAME(l2cap->node), (s)); \ 56 } while (0) 57 58 /* 59 * L2CAP signaling command ident's are assigned relative to the connection, 60 * because there is only one signaling channel (cid == 0x01) for every 61 * connection. So up to 254 (0xff - 0x01) L2CAP commands can be pending at the 62 * same time for the same connection. 63 */ 64 65 #define NG_L2CAP_NULL_IDENT 0x00 /* DO NOT USE THIS IDENT */ 66 #define NG_L2CAP_FIRST_IDENT 0x01 /* dynamically alloc. (start) */ 67 #define NG_L2CAP_LAST_IDENT 0xff /* dynamically alloc. (end) */ 68 69 /* 70 * L2CAP (Node private) 71 */ 72 73 struct ng_l2cap_con; 74 struct ng_l2cap_chan; 75 76 typedef struct ng_l2cap { 77 node_p node; /* node ptr */ 78 79 ng_l2cap_node_debug_ep debug; /* debug level */ 80 ng_l2cap_node_flags_ep flags; /* L2CAP node flags */ 81 ng_l2cap_node_auto_discon_ep discon_timo; /* auto discon. timeout */ 82 83 u_int16_t pkt_size; /* max. ACL packet size */ 84 u_int16_t num_pkts; /* out queue size */ 85 bdaddr_t bdaddr; /* unit BDADDR */ 86 87 hook_p hci; /* HCI downstream hook */ 88 hook_p l2c; /* L2CAP upstream hook */ 89 hook_p ctl; /* control hook */ 90 91 LIST_HEAD(, ng_l2cap_con) con_list; /* ACL connections */ 92 93 u_int16_t cid; /* last allocated CID */ 94 LIST_HEAD(, ng_l2cap_chan) chan_list; /* L2CAP channels */ 95 } ng_l2cap_t; 96 typedef ng_l2cap_t * ng_l2cap_p; 97 98 /* 99 * L2CAP connection descriptor 100 */ 101 102 struct ng_l2cap_cmd; 103 104 typedef struct ng_l2cap_con { 105 ng_l2cap_p l2cap; /* pointer to L2CAP */ 106 107 u_int16_t state; /* ACL connection state */ 108 u_int16_t flags; /* ACL connection flags */ 109 110 int32_t refcnt; /* reference count */ 111 112 bdaddr_t remote; /* remote unit address */ 113 u_int16_t con_handle; /* ACL connection handle */ 114 struct callout_handle con_timo; /* connection timeout */ 115 116 u_int8_t ident; /* last allocated ident */ 117 TAILQ_HEAD(, ng_l2cap_cmd) cmd_list; /* pending L2CAP cmds */ 118 119 struct mbuf *tx_pkt; /* xmitted L2CAP packet */ 120 int pending; /* num. of pending pkts */ 121 122 struct mbuf *rx_pkt; /* received L2CAP packet */ 123 int rx_pkt_len; /* packet len. so far */ 124 125 LIST_ENTRY(ng_l2cap_con) next; /* link */ 126 } ng_l2cap_con_t; 127 typedef ng_l2cap_con_t * ng_l2cap_con_p; 128 129 /* 130 * L2CAP channel descriptor 131 */ 132 133 typedef struct ng_l2cap_chan { 134 ng_l2cap_con_p con; /* pointer to connection */ 135 136 u_int16_t state; /* channel state */ 137 138 u_int8_t cfg_state; /* configuration state */ 139 #define NG_L2CAP_CFG_IN (1 << 0) /* incoming cfg path done */ 140 #define NG_L2CAP_CFG_OUT (1 << 1) /* outgoing cfg path done */ 141 #define NG_L2CAP_CFG_BOTH (NG_L2CAP_CFG_IN|NG_L2CAP_CFG_OUT) 142 143 u_int8_t ident; /* last L2CAP req. ident */ 144 145 u_int16_t psm; /* channel PSM */ 146 u_int16_t scid; /* source channel ID */ 147 u_int16_t dcid; /* destination channel ID */ 148 149 u_int16_t imtu; /* incoming channel MTU */ 150 ng_l2cap_flow_t iflow; /* incoming flow control */ 151 152 u_int16_t omtu; /* outgoing channel MTU */ 153 ng_l2cap_flow_t oflow; /* outgoing flow control */ 154 155 u_int16_t flush_timo; /* flush timeout */ 156 u_int16_t link_timo; /* link timeout */ 157 158 LIST_ENTRY(ng_l2cap_chan) next; /* link */ 159 } ng_l2cap_chan_t; 160 typedef ng_l2cap_chan_t * ng_l2cap_chan_p; 161 162 /* 163 * L2CAP command descriptor 164 */ 165 166 typedef struct ng_l2cap_cmd { 167 ng_l2cap_con_p con; /* L2CAP connection */ 168 ng_l2cap_chan_p ch; /* L2CAP channel */ 169 170 u_int16_t flags; /* command flags */ 171 #define NG_L2CAP_CMD_PENDING (1 << 0) /* command is pending */ 172 173 u_int8_t code; /* L2CAP command opcode */ 174 u_int8_t ident; /* L2CAP command ident */ 175 u_int32_t token; /* L2CA message token */ 176 177 struct callout_handle timo; /* RTX/ERTX timeout */ 178 179 struct mbuf *aux; /* optional data */ 180 181 TAILQ_ENTRY(ng_l2cap_cmd) next; /* link */ 182 } ng_l2cap_cmd_t; 183 typedef ng_l2cap_cmd_t * ng_l2cap_cmd_p; 184 185 #endif /* ndef _NETGRAPH_L2CAP_VAR_H_ */ 186 187