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