/* att.h - Attribute protocol handling */ /* * Copyright (c) 2015 Intel Corporation * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * 1) Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * * 2) Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * * 3) Neither the name of Intel Corporation nor the names of its contributors * may be used to endorse or promote products derived from this software without * specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #define BT_ATT_DEFAULT_LE_MTU 23 #define BT_ATT_MAX_LE_MTU 517 struct bt_att_hdr { uint8_t code; } PACK_STRUCT; /* Error codes for Error response PDU */ #define BT_ATT_ERR_INVALID_HANDLE 0x01 #define BT_ATT_ERR_READ_NOT_PERMITTED 0x02 #define BT_ATT_ERR_WRITE_NOT_PERMITTED 0x03 #define BT_ATT_ERR_INVALID_PDU 0x04 #define BT_ATT_ERR_AUTHENTICATION 0x05 #define BT_ATT_ERR_NOT_SUPPORTED 0x06 #define BT_ATT_ERR_INVALID_OFFSET 0x07 #define BT_ATT_ERR_AUTHORIZATION 0x08 #define BT_ATT_ERR_PREPARE_QUEUE_FULL 0x09 #define BT_ATT_ERR_ATTRIBUTE_NOT_FOUND 0x0a #define BT_ATT_ERR_ATTRIBUTE_NOT_LONG 0x0b #define BT_ATT_ERR_ENCRYPTION_KEY_SIZE 0x0c #define BT_ATT_ERR_INVALID_ATTRIBUTE_LEN 0x0d #define BT_ATT_ERR_UNLIKELY 0x0e #define BT_ATT_ERR_INSUFFICIENT_ENCRYPTION 0x0f #define BT_ATT_ERR_UNSUPPORTED_GROUP_TYPE 0x10 #define BT_ATT_ERR_INSUFFICIENT_RESOURCES 0x11 #define BT_ATT_OP_ERROR_RSP 0x01 struct bt_att_error_rsp { uint8_t request; uint16_t handle; uint8_t error; } PACK_STRUCT; #define BT_ATT_OP_MTU_REQ 0x02 struct bt_att_exchange_mtu_req { uint16_t mtu; } PACK_STRUCT; #define BT_ATT_OP_MTU_RSP 0x03 struct bt_att_exchange_mtu_rsp { uint16_t mtu; } PACK_STRUCT; /* Find Information Request */ #define BT_ATT_OP_FIND_INFO_REQ 0x04 struct bt_att_find_info_req { uint16_t start_handle; uint16_t end_handle; } PACK_STRUCT; /* Format field values for BT_ATT_OP_FIND_INFO_RSP */ #define BT_ATT_INFO_16 0x01 #define BT_ATT_INFO_128 0x02 struct bt_att_info_16 { uint16_t handle; uint16_t uuid; } PACK_STRUCT; struct bt_att_info_128 { uint16_t handle; uint8_t uuid[16]; } PACK_STRUCT; /* Find Information Response */ #define BT_ATT_OP_FIND_INFO_RSP 0x05 struct bt_att_find_info_rsp { uint8_t format; uint8_t info[0]; } PACK_STRUCT; /* Find By Type Value Request */ #define BT_ATT_OP_FIND_TYPE_REQ 0x06 struct bt_att_find_type_req { uint16_t start_handle; uint16_t end_handle; uint16_t type; uint8_t value[0]; } PACK_STRUCT; struct bt_att_handle_group { uint16_t start_handle; uint16_t end_handle; } PACK_STRUCT; /* Find By Type Value Response */ #define BT_ATT_OP_FIND_TYPE_RSP 0x07 struct bt_att_find_type_rsp { struct bt_att_handle_group list[0]; } PACK_STRUCT; #define BT_UUID_16 0x00 #define BT_UUID_128 0x01 /* TODO: Move UUID to its own file */ struct bt_uuid { uint8_t type; union { uint16_t u16; uint8_t u128[16]; }; }; /* Read By Type Request */ #define BT_ATT_OP_READ_TYPE_REQ 0x08 struct bt_att_read_type_req { uint16_t start_handle; uint16_t end_handle; uint8_t uuid[0]; } PACK_STRUCT; struct bt_att_data { uint16_t handle; uint8_t value[0]; } PACK_STRUCT; /* Read By Type Response */ #define BT_ATT_OP_READ_TYPE_RSP 0x09 struct bt_att_read_type_rsp { uint8_t len; struct bt_att_data data[0]; } PACK_STRUCT; /* Read Request */ #define BT_ATT_OP_READ_REQ 0x0a struct bt_att_read_req { uint16_t handle; } PACK_STRUCT; /* Read Response */ #define BT_ATT_OP_READ_RSP 0x0b struct bt_att_read_rsp { uint8_t value[0]; } PACK_STRUCT; /* Read Blob Request */ #define BT_ATT_OP_READ_BLOB_REQ 0x0c struct bt_att_read_blob_req { uint16_t handle; uint16_t offset; } PACK_STRUCT; /* Read Blob Response */ #define BT_ATT_OP_READ_BLOB_RSP 0x0d struct bt_att_read_blob_rsp { uint8_t value[0]; } PACK_STRUCT; /* Read Multiple Request */ #define BT_ATT_OP_READ_MULT_REQ 0x0e struct bt_att_read_mult_req { uint16_t handle1; uint16_t handle2; uint16_t handles[0]; } PACK_STRUCT; /* Read Multiple Respose */ #define BT_ATT_OP_READ_MULT_RSP 0x0f struct bt_att_read_mult_rsp { uint8_t value[0]; } PACK_STRUCT; /* Read by Group Type Request */ #define BT_ATT_OP_READ_GROUP_REQ 0x10 struct bt_att_read_group_req { uint16_t start_handle; uint16_t end_handle; uint8_t uuid[0]; } PACK_STRUCT; struct bt_att_group_data { uint16_t start_handle; uint16_t end_handle; uint8_t value[0]; } PACK_STRUCT; /* Read by Group Type Response */ #define BT_ATT_OP_READ_GROUP_RSP 0x11 struct bt_att_read_group_rsp { uint8_t len; struct bt_att_group_data data[0]; } PACK_STRUCT; /* Write Request */ #define BT_ATT_OP_WRITE_REQ 0x12 struct bt_att_write_req { uint16_t handle; uint8_t value[0]; } PACK_STRUCT; /* Write Response */ #define BT_ATT_OP_WRITE_RSP 0x13 /* Prepare Write Request */ #define BT_ATT_OP_PREPARE_WRITE_REQ 0x16 struct bt_att_prepare_write_req { uint16_t handle; uint16_t offset; uint8_t value[0]; } PACK_STRUCT; /* Prepare Write Respond */ #define BT_ATT_OP_PREPARE_WRITE_RSP 0x17 struct bt_att_prepare_write_rsp { uint16_t handle; uint16_t offset; uint8_t value[0]; } PACK_STRUCT; /* Execute Write Request */ #define BT_ATT_FLAG_CANCEL 0x00 #define BT_ATT_FLAG_EXEC 0x01 #define BT_ATT_OP_EXEC_WRITE_REQ 0x18 struct bt_att_exec_write_req { uint8_t flags; } PACK_STRUCT; /* Execute Write Response */ #define BT_ATT_OP_EXEC_WRITE_RSP 0x19 /* Handle Value Notification */ #define BT_ATT_OP_NOTIFY 0x1b struct bt_att_notify { uint16_t handle; uint8_t value[0]; } PACK_STRUCT; /* Handle Value Indication */ #define BT_ATT_OP_INDICATE 0x1d struct bt_att_indicate { uint16_t handle; uint8_t value[0]; } PACK_STRUCT; /* Handle Value Confirm */ #define BT_ATT_OP_CONFIRM 0x1f struct bt_att_signature { uint8_t value[12]; } PACK_STRUCT; /* Write Command */ #define BT_ATT_OP_WRITE_CMD 0x52 struct bt_att_write_cmd { uint16_t handle; uint8_t value[0]; } PACK_STRUCT; /* Signed Write Command */ #define BT_ATT_OP_SIGNED_WRITE_CMD 0xd2 struct bt_att_signed_write_req { uint16_t handle; uint8_t value[0]; } PACK_STRUCT; void bt_att_recv(struct bt_conn *conn, struct bt_buf *buf); struct bt_buf *bt_att_create_pdu(struct bt_conn *conn, uint8_t op, size_t len);