/* * Copyright (C) 2000-2001 Qualcomm Incorporated * Copyright (C) 2009-2010 Gustavo F. Padovan * Copyright (C) 2010 Google Inc. * Written 2000,2001 by Maxim Krasnyansky * * (Intentionally left out Linux Kernel license notice, see below.) * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. * IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY * CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. * * ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, * COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS * SOFTWARE IS DISCLAIMED. * * **************************************************************************************** * **************************************************************************************** * **************************************************************************************** * * Copyright (c) 2020 Gothel Software e.K. * Copyright (c) 2020 ZAFENA AB * * Permission is hereby granted, free of charge, to any person obtaining * a copy of this software and associated documentation files (the * "Software"), to deal in the Software without restriction, including * without limitation the rights to use, copy, modify, merge, publish, * distribute, sublicense, and/or sell copies of the Software, and to * permit persons to whom the Software is furnished to do so, subject to * the following conditions: * * The above copyright notice and this permission notice shall be * included in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. * * **************************************************************************************** * **************************************************************************************** * **************************************************************************************** * * This file imports certain information from Linux Kernel's BlueZ protocol stack, * originating from Qualcomm's sources under MIT license. * This information enables the use of certain kernel services via system calls. * Therefore, the license of this file has been aligned with this project. * * Notice Qualcomm's original MIT license of the respective files. * * Also notice Linus Torvalds's Linux Kernel license exception regarding kernel syscalls (ioctl): * * and therefor . * * Given the syscall usage and original file's MIT license, * we assume the following SPDX-License-Identifier should be declared: * "SPDX-License-Identifier: (GPL-2.0 WITH Linux-syscall-note) AND MIT" * * See file COPYING in the root folder of this project for more details. * * Original sources: * linux-kernel 4.19 include/net/bluetooth/l2cap.h (git head d8edd9ed156a1a840f1b1c2dbbf458684d6eea6e). * * Original copyright: * BlueZ - Bluetooth protocol stack for Linux * Copyright (C) 2000-2001 Qualcomm Incorporated * Copyright (C) 2009-2010 Gustavo F. Padovan * Copyright (C) 2010 Google Inc. * Written 2000,2001 by Maxim Krasnyansky */ #ifndef L2CAP_IOCTL_HPP_ #define L2CAP_IOCTL_HPP_ #include "BTAddress.hpp" #include "linux_kernel_types.hpp" /** * BT Core Spec v5.2: Vol 3, Part A: BT Logical Link Control and Adaption Protocol (L2CAP) */ extern "C" { #include #include } /* extern "C" */ /** * Information from include/net/bluetooth/l2cap.h * Mixed with own comments. */ /* L2CAP defaults */ #define L2CAP_DEFAULT_MTU 672 #define L2CAP_DEFAULT_MIN_MTU 48 #define L2CAP_DEFAULT_FLUSH_TO 0xFFFF #define L2CAP_EFS_DEFAULT_FLUSH_TO 0xFFFFFFFF #define L2CAP_DEFAULT_TX_WINDOW 63 #define L2CAP_DEFAULT_EXT_WINDOW 0x3FFF #define L2CAP_DEFAULT_MAX_TX 3 #define L2CAP_DEFAULT_RETRANS_TO 2000 /* 2 seconds */ #define L2CAP_DEFAULT_MONITOR_TO 12000 /* 12 seconds */ #define L2CAP_DEFAULT_MAX_PDU_SIZE 1492 /* Sized for AMP packet */ #define L2CAP_DEFAULT_ACK_TO 200 #define L2CAP_DEFAULT_MAX_SDU_SIZE 0xFFFF #define L2CAP_DEFAULT_SDU_ITIME 0xFFFFFFFF #define L2CAP_DEFAULT_ACC_LAT 0xFFFFFFFF #define L2CAP_BREDR_MAX_PAYLOAD 1019 /* 3-DH5 packet */ #define L2CAP_LE_MIN_MTU 23 /** * L2CAP socket address *

* BT Core Spec v5.2: Vol 3, Part A: 4.2 L2CAP_CONNECTION_REQ *

*/ struct sockaddr_l2 { sa_family_t l2_family; /** Protocol Service Multiplexers */ __le16 l2_psm; bdaddr_t l2_bdaddr; /** Channel ID */ __le16 l2_cid; __u8 l2_bdaddr_type; }; /* L2CAP socket options */ #define L2CAP_OPTIONS 0x01 struct l2cap_options { __u16 omtu; __u16 imtu; __u16 flush_to; __u8 mode; __u8 fcs; __u8 max_tx; __u16 txwin_size; }; #define L2CAP_CONNINFO 0x02 struct l2cap_conninfo { __u16 hci_handle; __u8 dev_class[3]; }; #define L2CAP_LM 0x03 #define L2CAP_LM_MASTER 0x0001 #define L2CAP_LM_AUTH 0x0002 #define L2CAP_LM_ENCRYPT 0x0004 #define L2CAP_LM_TRUSTED 0x0008 #define L2CAP_LM_RELIABLE 0x0010 #define L2CAP_LM_SECURE 0x0020 #define L2CAP_LM_FIPS 0x0040 /* L2CAP command codes */ #define L2CAP_COMMAND_REJ 0x01 #define L2CAP_CONN_REQ 0x02 #define L2CAP_CONN_RSP 0x03 #define L2CAP_CONF_REQ 0x04 #define L2CAP_CONF_RSP 0x05 #define L2CAP_DISCONN_REQ 0x06 #define L2CAP_DISCONN_RSP 0x07 #define L2CAP_ECHO_REQ 0x08 #define L2CAP_ECHO_RSP 0x09 #define L2CAP_INFO_REQ 0x0a #define L2CAP_INFO_RSP 0x0b #define L2CAP_CREATE_CHAN_REQ 0x0c #define L2CAP_CREATE_CHAN_RSP 0x0d #define L2CAP_MOVE_CHAN_REQ 0x0e #define L2CAP_MOVE_CHAN_RSP 0x0f #define L2CAP_MOVE_CHAN_CFM 0x10 #define L2CAP_MOVE_CHAN_CFM_RSP 0x11 #define L2CAP_CONN_PARAM_UPDATE_REQ 0x12 #define L2CAP_CONN_PARAM_UPDATE_RSP 0x13 #define L2CAP_LE_CONN_REQ 0x14 #define L2CAP_LE_CONN_RSP 0x15 #define L2CAP_LE_CREDITS 0x16 /* L2CAP extended feature mask */ #define L2CAP_FEAT_FLOWCTL 0x00000001 #define L2CAP_FEAT_RETRANS 0x00000002 #define L2CAP_FEAT_BIDIR_QOS 0x00000004 #define L2CAP_FEAT_ERTM 0x00000008 #define L2CAP_FEAT_STREAMING 0x00000010 #define L2CAP_FEAT_FCS 0x00000020 #define L2CAP_FEAT_EXT_FLOW 0x00000040 #define L2CAP_FEAT_FIXED_CHAN 0x00000080 #define L2CAP_FEAT_EXT_WINDOW 0x00000100 #define L2CAP_FEAT_UCD 0x00000200 /* L2CAP checksum option */ #define L2CAP_FCS_NONE 0x00 #define L2CAP_FCS_CRC16 0x01 /* L2CAP fixed channels */ #define L2CAP_FC_SIG_BREDR 0x02 #define L2CAP_FC_CONNLESS 0x04 #define L2CAP_FC_A2MP 0x08 #define L2CAP_FC_ATT 0x10 #define L2CAP_FC_SIG_LE 0x20 #define L2CAP_FC_SMP_LE 0x40 #define L2CAP_FC_SMP_BREDR 0x80 /* L2CAP Control Field bit masks */ #define L2CAP_CTRL_SAR 0xC000 #define L2CAP_CTRL_REQSEQ 0x3F00 #define L2CAP_CTRL_TXSEQ 0x007E #define L2CAP_CTRL_SUPERVISE 0x000C #define L2CAP_CTRL_RETRANS 0x0080 #define L2CAP_CTRL_FINAL 0x0080 #define L2CAP_CTRL_POLL 0x0010 #define L2CAP_CTRL_FRAME_TYPE 0x0001 /* I- or S-Frame */ #define L2CAP_CTRL_TXSEQ_SHIFT 1 #define L2CAP_CTRL_SUPER_SHIFT 2 #define L2CAP_CTRL_POLL_SHIFT 4 #define L2CAP_CTRL_FINAL_SHIFT 7 #define L2CAP_CTRL_REQSEQ_SHIFT 8 #define L2CAP_CTRL_SAR_SHIFT 14 /* L2CAP Extended Control Field bit mask */ #define L2CAP_EXT_CTRL_TXSEQ 0xFFFC0000 #define L2CAP_EXT_CTRL_SAR 0x00030000 #define L2CAP_EXT_CTRL_SUPERVISE 0x00030000 #define L2CAP_EXT_CTRL_REQSEQ 0x0000FFFC #define L2CAP_EXT_CTRL_POLL 0x00040000 #define L2CAP_EXT_CTRL_FINAL 0x00000002 #define L2CAP_EXT_CTRL_FRAME_TYPE 0x00000001 /* I- or S-Frame */ #define L2CAP_EXT_CTRL_FINAL_SHIFT 1 #define L2CAP_EXT_CTRL_REQSEQ_SHIFT 2 #define L2CAP_EXT_CTRL_SAR_SHIFT 16 #define L2CAP_EXT_CTRL_SUPER_SHIFT 16 #define L2CAP_EXT_CTRL_POLL_SHIFT 18 #define L2CAP_EXT_CTRL_TXSEQ_SHIFT 18 /* L2CAP Supervisory Function */ #define L2CAP_SUPER_RR 0x00 #define L2CAP_SUPER_REJ 0x01 #define L2CAP_SUPER_RNR 0x02 #define L2CAP_SUPER_SREJ 0x03 /* L2CAP Segmentation and Reassembly */ #define L2CAP_SAR_UNSEGMENTED 0x00 #define L2CAP_SAR_START 0x01 #define L2CAP_SAR_END 0x02 #define L2CAP_SAR_CONTINUE 0x03 /* L2CAP Command rej. reasons */ #define L2CAP_REJ_NOT_UNDERSTOOD 0x0000 #define L2CAP_REJ_MTU_EXCEEDED 0x0001 #define L2CAP_REJ_INVALID_CID 0x0002 /* L2CAP structures */ struct l2cap_hdr { __le16 len; __le16 cid; } __packed; #define L2CAP_HDR_SIZE 4 #define L2CAP_ENH_HDR_SIZE 6 #define L2CAP_EXT_HDR_SIZE 8 #define L2CAP_FCS_SIZE 2 #define L2CAP_SDULEN_SIZE 2 #define L2CAP_PSMLEN_SIZE 2 #define L2CAP_ENH_CTRL_SIZE 2 #define L2CAP_EXT_CTRL_SIZE 4 struct l2cap_cmd_hdr { __u8 code; __u8 ident; __le16 len; } __packed; #define L2CAP_CMD_HDR_SIZE 4 struct l2cap_cmd_rej_unk { __le16 reason; } __packed; struct l2cap_cmd_rej_mtu { __le16 reason; __le16 max_mtu; } __packed; struct l2cap_cmd_rej_cid { __le16 reason; __le16 scid; __le16 dcid; } __packed; struct l2cap_conn_req { __le16 psm; __le16 scid; } __packed; struct l2cap_conn_rsp { __le16 dcid; __le16 scid; __le16 result; __le16 status; } __packed; /* protocol/service multiplexer (PSM) */ #if 0 /* BTIoctl.hpp */ #define L2CAP_PSM_SDP 0x0001 #define L2CAP_PSM_RFCOMM 0x0003 #define L2CAP_PSM_3DSP 0x0021 #define L2CAP_PSM_IPSP 0x0023 /* 6LoWPAN */ #define L2CAP_PSM_DYN_START 0x1001 #define L2CAP_PSM_DYN_END 0xffff #define L2CAP_PSM_AUTO_END 0x10ff #define L2CAP_PSM_LE_DYN_START 0x0080 #define L2CAP_PSM_LE_DYN_END 0x00ff /* channel identifier */ #define L2CAP_CID_SIGNALING 0x0001 #define L2CAP_CID_CONN_LESS 0x0002 #define L2CAP_CID_A2MP 0x0003 #define L2CAP_CID_ATT 0x0004 #define L2CAP_CID_LE_SIGNALING 0x0005 #define L2CAP_CID_SMP 0x0006 #define L2CAP_CID_SMP_BREDR 0x0007 #define L2CAP_CID_DYN_START 0x0040 #define L2CAP_CID_DYN_END 0xffff #define L2CAP_CID_LE_DYN_END 0x007f #endif /* BTIoctl.hpp */ /* connect/create channel results */ #define L2CAP_CR_SUCCESS 0x0000 #define L2CAP_CR_PEND 0x0001 #define L2CAP_CR_BAD_PSM 0x0002 #define L2CAP_CR_SEC_BLOCK 0x0003 #define L2CAP_CR_NO_MEM 0x0004 #define L2CAP_CR_BAD_AMP 0x0005 #define L2CAP_CR_AUTHENTICATION 0x0005 #define L2CAP_CR_AUTHORIZATION 0x0006 #define L2CAP_CR_BAD_KEY_SIZE 0x0007 #define L2CAP_CR_ENCRYPTION 0x0008 #define L2CAP_CR_INVALID_SCID 0x0009 #define L2CAP_CR_SCID_IN_USE 0x000A /* connect/create channel status */ #define L2CAP_CS_NO_INFO 0x0000 #define L2CAP_CS_AUTHEN_PEND 0x0001 #define L2CAP_CS_AUTHOR_PEND 0x0002 struct l2cap_conf_req { __le16 dcid; __le16 flags; __u8 data[0]; } __packed; struct l2cap_conf_rsp { __le16 scid; __le16 flags; __le16 result; __u8 data[0]; } __packed; #define L2CAP_CONF_SUCCESS 0x0000 #define L2CAP_CONF_UNACCEPT 0x0001 #define L2CAP_CONF_REJECT 0x0002 #define L2CAP_CONF_UNKNOWN 0x0003 #define L2CAP_CONF_PENDING 0x0004 #define L2CAP_CONF_EFS_REJECT 0x0005 /* configuration req/rsp continuation flag */ #define L2CAP_CONF_FLAG_CONTINUATION 0x0001 struct l2cap_conf_opt { __u8 type; __u8 len; __u8 val[0]; } __packed; #define L2CAP_CONF_OPT_SIZE 2 #define L2CAP_CONF_HINT 0x80 #define L2CAP_CONF_MASK 0x7f #define L2CAP_CONF_MTU 0x01 #define L2CAP_CONF_FLUSH_TO 0x02 #define L2CAP_CONF_QOS 0x03 #define L2CAP_CONF_RFC 0x04 #define L2CAP_CONF_FCS 0x05 #define L2CAP_CONF_EFS 0x06 #define L2CAP_CONF_EWS 0x07 #define L2CAP_CONF_MAX_SIZE 22 struct l2cap_conf_rfc { __u8 mode; __u8 txwin_size; __u8 max_transmit; __le16 retrans_timeout; __le16 monitor_timeout; __le16 max_pdu_size; } __packed; #define L2CAP_MODE_BASIC 0x00 #define L2CAP_MODE_RETRANS 0x01 #define L2CAP_MODE_FLOWCTL 0x02 #define L2CAP_MODE_ERTM 0x03 #define L2CAP_MODE_STREAMING 0x04 /* Unlike the above this one doesn't actually map to anything that would * ever be sent over the air. Therefore, use a value that's unlikely to * ever be used in the BR/EDR configuration phase. */ #define L2CAP_MODE_LE_FLOWCTL 0x80 struct l2cap_conf_efs { __u8 id; __u8 stype; __le16 msdu; __le32 sdu_itime; __le32 acc_lat; __le32 flush_to; } __packed; #define L2CAP_SERV_NOTRAFIC 0x00 #define L2CAP_SERV_BESTEFFORT 0x01 #define L2CAP_SERV_GUARANTEED 0x02 #define L2CAP_BESTEFFORT_ID 0x01 struct l2cap_disconn_req { __le16 dcid; __le16 scid; } __packed; struct l2cap_disconn_rsp { __le16 dcid; __le16 scid; } __packed; struct l2cap_info_req { __le16 type; } __packed; struct l2cap_info_rsp { __le16 type; __le16 result; __u8 data[0]; } __packed; struct l2cap_create_chan_req { __le16 psm; __le16 scid; __u8 amp_id; } __packed; struct l2cap_create_chan_rsp { __le16 dcid; __le16 scid; __le16 result; __le16 status; } __packed; struct l2cap_move_chan_req { __le16 icid; __u8 dest_amp_id; } __packed; struct l2cap_move_chan_rsp { __le16 icid; __le16 result; } __packed; #define L2CAP_MR_SUCCESS 0x0000 #define L2CAP_MR_PEND 0x0001 #define L2CAP_MR_BAD_ID 0x0002 #define L2CAP_MR_SAME_ID 0x0003 #define L2CAP_MR_NOT_SUPP 0x0004 #define L2CAP_MR_COLLISION 0x0005 #define L2CAP_MR_NOT_ALLOWED 0x0006 struct l2cap_move_chan_cfm { __le16 icid; __le16 result; } __packed; #define L2CAP_MC_CONFIRMED 0x0000 #define L2CAP_MC_UNCONFIRMED 0x0001 struct l2cap_move_chan_cfm_rsp { __le16 icid; } __packed; /* info type */ #define L2CAP_IT_CL_MTU 0x0001 #define L2CAP_IT_FEAT_MASK 0x0002 #define L2CAP_IT_FIXED_CHAN 0x0003 /* info result */ #define L2CAP_IR_SUCCESS 0x0000 #define L2CAP_IR_NOTSUPP 0x0001 struct l2cap_conn_param_update_req { __le16 min; __le16 max; __le16 latency; __le16 to_multiplier; } __packed; struct l2cap_conn_param_update_rsp { __le16 result; } __packed; /* Connection Parameters result */ #define L2CAP_CONN_PARAM_ACCEPTED 0x0000 #define L2CAP_CONN_PARAM_REJECTED 0x0001 #define L2CAP_LE_MAX_CREDITS 10 #define L2CAP_LE_DEFAULT_MPS 230 struct l2cap_le_conn_req { __le16 psm; __le16 scid; __le16 mtu; __le16 mps; __le16 credits; } __packed; struct l2cap_le_conn_rsp { __le16 dcid; __le16 mtu; __le16 mps; __le16 credits; __le16 result; } __packed; struct l2cap_le_credits { __le16 cid; __le16 credits; } __packed; #endif /* L2CAP_IOCTL_HPP_ */