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 (40000) /* 40 seconds */ 33 #define L2CAP_INFO_TIMEOUT (4000) /* 4 seconds */ 34 35 /* L2CAP socket address */ 36 struct sockaddr_l2 { 37 sa_family_t l2_family; 38 __le16 l2_psm; 39 bdaddr_t l2_bdaddr; 40 __le16 l2_cid; 41 }; 42 43 /* L2CAP socket options */ 44 #define L2CAP_OPTIONS 0x01 45 struct l2cap_options { 46 __u16 omtu; 47 __u16 imtu; 48 __u16 flush_to; 49 __u8 mode; 50 }; 51 52 #define L2CAP_CONNINFO 0x02 53 struct l2cap_conninfo { 54 __u16 hci_handle; 55 __u8 dev_class[3]; 56 }; 57 58 #define L2CAP_LM 0x03 59 #define L2CAP_LM_MASTER 0x0001 60 #define L2CAP_LM_AUTH 0x0002 61 #define L2CAP_LM_ENCRYPT 0x0004 62 #define L2CAP_LM_TRUSTED 0x0008 63 #define L2CAP_LM_RELIABLE 0x0010 64 #define L2CAP_LM_SECURE 0x0020 65 66 /* L2CAP command codes */ 67 #define L2CAP_COMMAND_REJ 0x01 68 #define L2CAP_CONN_REQ 0x02 69 #define L2CAP_CONN_RSP 0x03 70 #define L2CAP_CONF_REQ 0x04 71 #define L2CAP_CONF_RSP 0x05 72 #define L2CAP_DISCONN_REQ 0x06 73 #define L2CAP_DISCONN_RSP 0x07 74 #define L2CAP_ECHO_REQ 0x08 75 #define L2CAP_ECHO_RSP 0x09 76 #define L2CAP_INFO_REQ 0x0a 77 #define L2CAP_INFO_RSP 0x0b 78 79 /* L2CAP structures */ 80 struct l2cap_hdr { 81 __le16 len; 82 __le16 cid; 83 } __attribute__ ((packed)); 84 #define L2CAP_HDR_SIZE 4 85 86 struct l2cap_cmd_hdr { 87 __u8 code; 88 __u8 ident; 89 __le16 len; 90 } __attribute__ ((packed)); 91 #define L2CAP_CMD_HDR_SIZE 4 92 93 struct l2cap_cmd_rej { 94 __le16 reason; 95 } __attribute__ ((packed)); 96 97 struct l2cap_conn_req { 98 __le16 psm; 99 __le16 scid; 100 } __attribute__ ((packed)); 101 102 struct l2cap_conn_rsp { 103 __le16 dcid; 104 __le16 scid; 105 __le16 result; 106 __le16 status; 107 } __attribute__ ((packed)); 108 109 /* connect result */ 110 #define L2CAP_CR_SUCCESS 0x0000 111 #define L2CAP_CR_PEND 0x0001 112 #define L2CAP_CR_BAD_PSM 0x0002 113 #define L2CAP_CR_SEC_BLOCK 0x0003 114 #define L2CAP_CR_NO_MEM 0x0004 115 116 /* connect status */ 117 #define L2CAP_CS_NO_INFO 0x0000 118 #define L2CAP_CS_AUTHEN_PEND 0x0001 119 #define L2CAP_CS_AUTHOR_PEND 0x0002 120 121 struct l2cap_conf_req { 122 __le16 dcid; 123 __le16 flags; 124 __u8 data[0]; 125 } __attribute__ ((packed)); 126 127 struct l2cap_conf_rsp { 128 __le16 scid; 129 __le16 flags; 130 __le16 result; 131 __u8 data[0]; 132 } __attribute__ ((packed)); 133 134 #define L2CAP_CONF_SUCCESS 0x0000 135 #define L2CAP_CONF_UNACCEPT 0x0001 136 #define L2CAP_CONF_REJECT 0x0002 137 #define L2CAP_CONF_UNKNOWN 0x0003 138 139 struct l2cap_conf_opt { 140 __u8 type; 141 __u8 len; 142 __u8 val[0]; 143 } __attribute__ ((packed)); 144 #define L2CAP_CONF_OPT_SIZE 2 145 146 #define L2CAP_CONF_MTU 0x01 147 #define L2CAP_CONF_FLUSH_TO 0x02 148 #define L2CAP_CONF_QOS 0x03 149 #define L2CAP_CONF_RFC 0x04 150 151 #define L2CAP_CONF_MAX_SIZE 22 152 153 struct l2cap_conf_rfc { 154 __u8 mode; 155 __u8 txwin_size; 156 __u8 max_transmit; 157 __le16 retrans_timeout; 158 __le16 monitor_timeout; 159 __le16 max_pdu_size; 160 } __attribute__ ((packed)); 161 162 #define L2CAP_MODE_BASIC 0x00 163 #define L2CAP_MODE_RETRANS 0x01 164 #define L2CAP_MODE_FLOWCTL 0x02 165 166 struct l2cap_disconn_req { 167 __le16 dcid; 168 __le16 scid; 169 } __attribute__ ((packed)); 170 171 struct l2cap_disconn_rsp { 172 __le16 dcid; 173 __le16 scid; 174 } __attribute__ ((packed)); 175 176 struct l2cap_info_req { 177 __le16 type; 178 } __attribute__ ((packed)); 179 180 struct l2cap_info_rsp { 181 __le16 type; 182 __le16 result; 183 __u8 data[0]; 184 } __attribute__ ((packed)); 185 186 /* info type */ 187 #define L2CAP_IT_CL_MTU 0x0001 188 #define L2CAP_IT_FEAT_MASK 0x0002 189 #define L2CAP_IT_FIXED_CHAN 0x0003 190 191 /* info result */ 192 #define L2CAP_IR_SUCCESS 0x0000 193 #define L2CAP_IR_NOTSUPP 0x0001 194 195 /* ----- L2CAP connections ----- */ 196 struct l2cap_chan_list { 197 struct sock *head; 198 rwlock_t lock; 199 long num; 200 }; 201 202 struct l2cap_conn { 203 struct hci_conn *hcon; 204 205 bdaddr_t *dst; 206 bdaddr_t *src; 207 208 unsigned int mtu; 209 210 __u32 feat_mask; 211 212 __u8 info_state; 213 __u8 info_ident; 214 215 struct timer_list info_timer; 216 217 spinlock_t lock; 218 219 struct sk_buff *rx_skb; 220 __u32 rx_len; 221 __u8 rx_ident; 222 __u8 tx_ident; 223 224 __u8 disc_reason; 225 226 struct l2cap_chan_list chan_list; 227 }; 228 229 #define L2CAP_INFO_CL_MTU_REQ_SENT 0x01 230 #define L2CAP_INFO_FEAT_MASK_REQ_SENT 0x04 231 #define L2CAP_INFO_FEAT_MASK_REQ_DONE 0x08 232 233 /* ----- L2CAP channel and socket info ----- */ 234 #define l2cap_pi(sk) ((struct l2cap_pinfo *) sk) 235 236 struct l2cap_pinfo { 237 struct bt_sock bt; 238 __le16 psm; 239 __u16 dcid; 240 __u16 scid; 241 242 __u16 imtu; 243 __u16 omtu; 244 __u16 flush_to; 245 __u8 sec_level; 246 __u8 role_switch; 247 __u8 force_reliable; 248 249 __u8 conf_req[64]; 250 __u8 conf_len; 251 __u8 conf_state; 252 __u8 conf_retry; 253 254 __u8 ident; 255 256 __le16 sport; 257 258 struct l2cap_conn *conn; 259 struct sock *next_c; 260 struct sock *prev_c; 261 }; 262 263 #define L2CAP_CONF_REQ_SENT 0x01 264 #define L2CAP_CONF_INPUT_DONE 0x02 265 #define L2CAP_CONF_OUTPUT_DONE 0x04 266 #define L2CAP_CONF_CONNECT_PEND 0x80 267 268 #define L2CAP_CONF_MAX_RETRIES 2 269 270 void l2cap_load(void); 271 272 #endif /* __L2CAP_H */ 273