1 /* 2 * ng_l2cap_var.h 3 */ 4 5 /*- 6 * Copyright (c) 2001 Maksim Yevmenkin <m_evmenkin@yahoo.com> 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 * 30 * $Id: ng_l2cap_var.h,v 1.2 2003/04/28 21:44:59 max Exp $ 31 * $FreeBSD: src/sys/netgraph/bluetooth/l2cap/ng_l2cap_var.h,v 1.6 2005/01/07 01:45:43 imp Exp $ 32 */ 33 34 #ifndef _NETGRAPH_L2CAP_VAR_H_ 35 #define _NETGRAPH_L2CAP_VAR_H_ 36 37 /* MALLOC decalation */ 38 #ifdef NG_SEPARATE_MALLOC 39 MALLOC_DECLARE(M_NETGRAPH_L2CAP); 40 #else 41 #define M_NETGRAPH_L2CAP M_NETGRAPH 42 #endif /* NG_SEPARATE_MALLOC */ 43 44 /* Debug */ 45 #define NG_L2CAP_ALERT if (l2cap->debug >= NG_L2CAP_ALERT_LEVEL) kprintf 46 #define NG_L2CAP_ERR if (l2cap->debug >= NG_L2CAP_ERR_LEVEL) kprintf 47 #define NG_L2CAP_WARN if (l2cap->debug >= NG_L2CAP_WARN_LEVEL) kprintf 48 #define NG_L2CAP_INFO if (l2cap->debug >= NG_L2CAP_INFO_LEVEL) kprintf 49 50 /* Wrapper around m_pullup */ 51 #define NG_L2CAP_M_PULLUP(m, s) \ 52 do { \ 53 if ((m)->m_len < (s)) \ 54 (m) = m_pullup((m), (s)); \ 55 if ((m) == NULL) \ 56 NG_L2CAP_ALERT("%s: %s - m_pullup(%zd) failed\n", \ 57 __func__, NG_NODE_NAME(l2cap->node), (s)); \ 58 } while (0) 59 60 /* 61 * L2CAP signaling command ident's are assigned relative to the connection, 62 * because there is only one signaling channel (cid == 0x01) for every 63 * connection. So up to 254 (0xff - 0x01) L2CAP commands can be pending at the 64 * same time for the same connection. 65 */ 66 67 #define NG_L2CAP_NULL_IDENT 0x00 /* DO NOT USE THIS IDENT */ 68 #define NG_L2CAP_FIRST_IDENT 0x01 /* dynamically alloc. (start) */ 69 #define NG_L2CAP_LAST_IDENT 0xff /* dynamically alloc. (end) */ 70 71 /* 72 * L2CAP (Node private) 73 */ 74 75 struct ng_l2cap_con; 76 struct ng_l2cap_chan; 77 78 typedef struct ng_l2cap { 79 node_p node; /* node ptr */ 80 81 ng_l2cap_node_debug_ep debug; /* debug level */ 82 ng_l2cap_node_flags_ep flags; /* L2CAP node flags */ 83 ng_l2cap_node_auto_discon_ep discon_timo; /* auto discon. timeout */ 84 85 u_int16_t pkt_size; /* max. ACL packet size */ 86 u_int16_t num_pkts; /* out queue size */ 87 bdaddr_t bdaddr; /* unit BDADDR */ 88 89 hook_p hci; /* HCI downstream hook */ 90 hook_p l2c; /* L2CAP upstream hook */ 91 hook_p ctl; /* control hook */ 92 93 LIST_HEAD(, ng_l2cap_con) con_list; /* ACL connections */ 94 95 u_int16_t cid; /* last allocated CID */ 96 LIST_HEAD(, ng_l2cap_chan) chan_list; /* L2CAP channels */ 97 } ng_l2cap_t; 98 typedef ng_l2cap_t * ng_l2cap_p; 99 100 /* 101 * L2CAP connection descriptor 102 */ 103 104 struct ng_l2cap_cmd; 105 106 typedef struct ng_l2cap_con { 107 ng_l2cap_p l2cap; /* pointer to L2CAP */ 108 109 u_int16_t state; /* ACL connection state */ 110 u_int16_t flags; /* ACL connection flags */ 111 112 int32_t refcnt; /* reference count */ 113 114 bdaddr_t remote; /* remote unit address */ 115 u_int16_t con_handle; /* ACL connection handle */ 116 struct callout con_timo; /* connection timeout */ 117 118 u_int8_t ident; /* last allocated ident */ 119 TAILQ_HEAD(, ng_l2cap_cmd) cmd_list; /* pending L2CAP cmds */ 120 121 struct mbuf *tx_pkt; /* xmitted L2CAP packet */ 122 int pending; /* num. of pending pkts */ 123 124 struct mbuf *rx_pkt; /* received L2CAP packet */ 125 int rx_pkt_len; /* packet len. so far */ 126 127 LIST_ENTRY(ng_l2cap_con) next; /* link */ 128 } ng_l2cap_con_t; 129 typedef ng_l2cap_con_t * ng_l2cap_con_p; 130 131 /* 132 * L2CAP channel descriptor 133 */ 134 135 typedef struct ng_l2cap_chan { 136 ng_l2cap_con_p con; /* pointer to connection */ 137 138 u_int16_t state; /* channel state */ 139 140 u_int8_t cfg_state; /* configuration state */ 141 #define NG_L2CAP_CFG_IN (1 << 0) /* incoming cfg path done */ 142 #define NG_L2CAP_CFG_OUT (1 << 1) /* outgoing cfg path done */ 143 #define NG_L2CAP_CFG_BOTH (NG_L2CAP_CFG_IN|NG_L2CAP_CFG_OUT) 144 145 u_int8_t ident; /* last L2CAP req. ident */ 146 147 u_int16_t psm; /* channel PSM */ 148 u_int16_t scid; /* source channel ID */ 149 u_int16_t dcid; /* destination channel ID */ 150 151 u_int16_t imtu; /* incoming channel MTU */ 152 ng_l2cap_flow_t iflow; /* incoming flow control */ 153 154 u_int16_t omtu; /* outgoing channel MTU */ 155 ng_l2cap_flow_t oflow; /* outgoing flow control */ 156 157 u_int16_t flush_timo; /* flush timeout */ 158 u_int16_t link_timo; /* link timeout */ 159 160 LIST_ENTRY(ng_l2cap_chan) next; /* link */ 161 } ng_l2cap_chan_t; 162 typedef ng_l2cap_chan_t * ng_l2cap_chan_p; 163 164 /* 165 * L2CAP command descriptor 166 */ 167 168 typedef struct ng_l2cap_cmd { 169 ng_l2cap_con_p con; /* L2CAP connection */ 170 ng_l2cap_chan_p ch; /* L2CAP channel */ 171 172 u_int16_t flags; /* command flags */ 173 #define NG_L2CAP_CMD_PENDING (1 << 0) /* command is pending */ 174 175 u_int8_t code; /* L2CAP command opcode */ 176 u_int8_t ident; /* L2CAP command ident */ 177 u_int32_t token; /* L2CA message token */ 178 179 struct callout timo; /* RTX/ERTX timeout */ 180 181 struct mbuf *aux; /* optional data */ 182 183 TAILQ_ENTRY(ng_l2cap_cmd) next; /* link */ 184 } ng_l2cap_cmd_t; 185 typedef ng_l2cap_cmd_t * ng_l2cap_cmd_p; 186 187 #endif /* ndef _NETGRAPH_L2CAP_VAR_H_ */ 188 189