1 /* 2 BlueZ - Bluetooth protocol stack for Linux 3 Copyright (C) 2000-2001 Qualcomm Incorporated 4 5 Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com> 6 7 This program is free software; you can redistribute it and/or modify 8 it under the terms of the GNU General Public License version 2 as 9 published by the Free Software Foundation; 10 11 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 12 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 13 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. 14 IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY 15 CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES 16 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 17 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 18 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 19 20 ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, 21 COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS 22 SOFTWARE IS DISCLAIMED. 23 */ 24 25 #ifndef __L2CAP_H 26 #define __L2CAP_H 27 28 /* L2CAP defaults */ 29 #define L2CAP_DEFAULT_MTU 672 30 #define L2CAP_DEFAULT_FLUSH_TO 0xFFFF 31 32 #define L2CAP_CONN_TIMEOUT (HZ * 40) 33 34 /* L2CAP socket address */ 35 struct sockaddr_l2 { 36 sa_family_t l2_family; 37 unsigned short l2_psm; 38 bdaddr_t l2_bdaddr; 39 }; 40 41 /* L2CAP socket options */ 42 #define L2CAP_OPTIONS 0x01 43 struct l2cap_options { 44 __u16 omtu; 45 __u16 imtu; 46 __u16 flush_to; 47 __u8 mode; 48 }; 49 50 #define L2CAP_CONNINFO 0x02 51 struct l2cap_conninfo { 52 __u16 hci_handle; 53 __u8 dev_class[3]; 54 }; 55 56 #define L2CAP_LM 0x03 57 #define L2CAP_LM_MASTER 0x0001 58 #define L2CAP_LM_AUTH 0x0002 59 #define L2CAP_LM_ENCRYPT 0x0004 60 #define L2CAP_LM_TRUSTED 0x0008 61 #define L2CAP_LM_RELIABLE 0x0010 62 #define L2CAP_LM_SECURE 0x0020 63 64 /* L2CAP command codes */ 65 #define L2CAP_COMMAND_REJ 0x01 66 #define L2CAP_CONN_REQ 0x02 67 #define L2CAP_CONN_RSP 0x03 68 #define L2CAP_CONF_REQ 0x04 69 #define L2CAP_CONF_RSP 0x05 70 #define L2CAP_DISCONN_REQ 0x06 71 #define L2CAP_DISCONN_RSP 0x07 72 #define L2CAP_ECHO_REQ 0x08 73 #define L2CAP_ECHO_RSP 0x09 74 #define L2CAP_INFO_REQ 0x0a 75 #define L2CAP_INFO_RSP 0x0b 76 77 /* L2CAP structures */ 78 struct l2cap_hdr { 79 __u16 len; 80 __u16 cid; 81 } __attribute__ ((packed)); 82 #define L2CAP_HDR_SIZE 4 83 84 struct l2cap_cmd_hdr { 85 __u8 code; 86 __u8 ident; 87 __u16 len; 88 } __attribute__ ((packed)); 89 #define L2CAP_CMD_HDR_SIZE 4 90 91 struct l2cap_cmd_rej { 92 __u16 reason; 93 } __attribute__ ((packed)); 94 95 struct l2cap_conn_req { 96 __u16 psm; 97 __u16 scid; 98 } __attribute__ ((packed)); 99 100 struct l2cap_conn_rsp { 101 __u16 dcid; 102 __u16 scid; 103 __u16 result; 104 __u16 status; 105 } __attribute__ ((packed)); 106 107 /* connect result */ 108 #define L2CAP_CR_SUCCESS 0x0000 109 #define L2CAP_CR_PEND 0x0001 110 #define L2CAP_CR_BAD_PSM 0x0002 111 #define L2CAP_CR_SEC_BLOCK 0x0003 112 #define L2CAP_CR_NO_MEM 0x0004 113 114 /* connect status */ 115 #define L2CAP_CS_NO_INFO 0x0000 116 #define L2CAP_CS_AUTHEN_PEND 0x0001 117 #define L2CAP_CS_AUTHOR_PEND 0x0002 118 119 struct l2cap_conf_req { 120 __u16 dcid; 121 __u16 flags; 122 __u8 data[0]; 123 } __attribute__ ((packed)); 124 125 struct l2cap_conf_rsp { 126 __u16 scid; 127 __u16 flags; 128 __u16 result; 129 __u8 data[0]; 130 } __attribute__ ((packed)); 131 132 #define L2CAP_CONF_SUCCESS 0x00 133 #define L2CAP_CONF_UNACCEPT 0x01 134 135 struct l2cap_conf_opt { 136 __u8 type; 137 __u8 len; 138 __u8 val[0]; 139 } __attribute__ ((packed)); 140 #define L2CAP_CONF_OPT_SIZE 2 141 142 #define L2CAP_CONF_MTU 0x01 143 #define L2CAP_CONF_FLUSH_TO 0x02 144 #define L2CAP_CONF_QOS 0x03 145 #define L2CAP_CONF_RFC 0x04 146 147 #define L2CAP_CONF_MAX_SIZE 22 148 149 struct l2cap_disconn_req { 150 __u16 dcid; 151 __u16 scid; 152 } __attribute__ ((packed)); 153 154 struct l2cap_disconn_rsp { 155 __u16 dcid; 156 __u16 scid; 157 } __attribute__ ((packed)); 158 159 struct l2cap_info_req { 160 __u16 type; 161 __u8 data[0]; 162 } __attribute__ ((packed)); 163 164 struct l2cap_info_rsp { 165 __u16 type; 166 __u16 result; 167 __u8 data[0]; 168 } __attribute__ ((packed)); 169 170 /* info type */ 171 #define L2CAP_IT_CL_MTU 0x0001 172 #define L2CAP_IT_FEAT_MASK 0x0002 173 174 /* info result */ 175 #define L2CAP_IR_SUCCESS 0x0000 176 #define L2CAP_IR_NOTSUPP 0x0001 177 178 /* ----- L2CAP connections ----- */ 179 struct l2cap_chan_list { 180 struct sock *head; 181 rwlock_t lock; 182 long num; 183 }; 184 185 struct l2cap_conn { 186 struct hci_conn *hcon; 187 188 bdaddr_t *dst; 189 bdaddr_t *src; 190 191 unsigned int mtu; 192 193 spinlock_t lock; 194 195 struct sk_buff *rx_skb; 196 __u32 rx_len; 197 __u8 rx_ident; 198 __u8 tx_ident; 199 200 struct l2cap_chan_list chan_list; 201 }; 202 203 /* ----- L2CAP channel and socket info ----- */ 204 #define l2cap_pi(sk) ((struct l2cap_pinfo *) sk) 205 206 struct l2cap_pinfo { 207 struct bt_sock bt; 208 __u16 psm; 209 __u16 dcid; 210 __u16 scid; 211 212 __u16 imtu; 213 __u16 omtu; 214 __u16 flush_to; 215 216 __u32 link_mode; 217 218 __u8 conf_state; 219 __u8 conf_retry; 220 __u16 conf_mtu; 221 222 __u8 ident; 223 224 __u16 sport; 225 226 struct l2cap_conn *conn; 227 struct sock *next_c; 228 struct sock *prev_c; 229 }; 230 231 #define L2CAP_CONF_REQ_SENT 0x01 232 #define L2CAP_CONF_INPUT_DONE 0x02 233 #define L2CAP_CONF_OUTPUT_DONE 0x04 234 #define L2CAP_CONF_MAX_RETRIES 2 235 236 void l2cap_load(void); 237 238 #endif /* __L2CAP_H */ 239