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 __le16 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 __le16 len; 80 __le16 cid; 81 } __attribute__ ((packed)); 82 #define L2CAP_HDR_SIZE 4 83 84 struct l2cap_cmd_hdr { 85 __u8 code; 86 __u8 ident; 87 __le16 len; 88 } __attribute__ ((packed)); 89 #define L2CAP_CMD_HDR_SIZE 4 90 91 struct l2cap_cmd_rej { 92 __le16 reason; 93 } __attribute__ ((packed)); 94 95 struct l2cap_conn_req { 96 __le16 psm; 97 __le16 scid; 98 } __attribute__ ((packed)); 99 100 struct l2cap_conn_rsp { 101 __le16 dcid; 102 __le16 scid; 103 __le16 result; 104 __le16 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 __le16 dcid; 121 __le16 flags; 122 __u8 data[0]; 123 } __attribute__ ((packed)); 124 125 struct l2cap_conf_rsp { 126 __le16 scid; 127 __le16 flags; 128 __le16 result; 129 __u8 data[0]; 130 } __attribute__ ((packed)); 131 132 #define L2CAP_CONF_SUCCESS 0x0000 133 #define L2CAP_CONF_UNACCEPT 0x0001 134 #define L2CAP_CONF_REJECT 0x0002 135 #define L2CAP_CONF_UNKNOWN 0x0003 136 137 struct l2cap_conf_opt { 138 __u8 type; 139 __u8 len; 140 __u8 val[0]; 141 } __attribute__ ((packed)); 142 #define L2CAP_CONF_OPT_SIZE 2 143 144 #define L2CAP_CONF_MTU 0x01 145 #define L2CAP_CONF_FLUSH_TO 0x02 146 #define L2CAP_CONF_QOS 0x03 147 #define L2CAP_CONF_RFC 0x04 148 149 #define L2CAP_CONF_MAX_SIZE 22 150 151 struct l2cap_disconn_req { 152 __le16 dcid; 153 __le16 scid; 154 } __attribute__ ((packed)); 155 156 struct l2cap_disconn_rsp { 157 __le16 dcid; 158 __le16 scid; 159 } __attribute__ ((packed)); 160 161 struct l2cap_info_req { 162 __le16 type; 163 __u8 data[0]; 164 } __attribute__ ((packed)); 165 166 struct l2cap_info_rsp { 167 __le16 type; 168 __le16 result; 169 __u8 data[0]; 170 } __attribute__ ((packed)); 171 172 /* info type */ 173 #define L2CAP_IT_CL_MTU 0x0001 174 #define L2CAP_IT_FEAT_MASK 0x0002 175 176 /* info result */ 177 #define L2CAP_IR_SUCCESS 0x0000 178 #define L2CAP_IR_NOTSUPP 0x0001 179 180 /* ----- L2CAP connections ----- */ 181 struct l2cap_chan_list { 182 struct sock *head; 183 rwlock_t lock; 184 long num; 185 }; 186 187 struct l2cap_conn { 188 struct hci_conn *hcon; 189 190 bdaddr_t *dst; 191 bdaddr_t *src; 192 193 unsigned int mtu; 194 195 spinlock_t lock; 196 197 struct sk_buff *rx_skb; 198 __u32 rx_len; 199 __u8 rx_ident; 200 __u8 tx_ident; 201 202 struct l2cap_chan_list chan_list; 203 }; 204 205 /* ----- L2CAP channel and socket info ----- */ 206 #define l2cap_pi(sk) ((struct l2cap_pinfo *) sk) 207 208 struct l2cap_pinfo { 209 struct bt_sock bt; 210 __le16 psm; 211 __u16 dcid; 212 __u16 scid; 213 214 __u16 imtu; 215 __u16 omtu; 216 __u16 flush_to; 217 218 __u32 link_mode; 219 220 __u8 conf_req[64]; 221 __u8 conf_len; 222 __u8 conf_state; 223 __u8 conf_retry; 224 __u16 conf_mtu; 225 226 __u8 ident; 227 228 __le16 sport; 229 230 struct l2cap_conn *conn; 231 struct sock *next_c; 232 struct sock *prev_c; 233 }; 234 235 #define L2CAP_CONF_REQ_SENT 0x01 236 #define L2CAP_CONF_INPUT_DONE 0x02 237 #define L2CAP_CONF_OUTPUT_DONE 0x04 238 #define L2CAP_CONF_MAX_RETRIES 2 239 240 void l2cap_load(void); 241 242 #endif /* __L2CAP_H */ 243