1 /* SPDX-License-Identifier: GPL-2.0 */
3 * BlueZ - Bluetooth protocol stack for Linux
5 * Copyright (C) 2021 Intel Corporation
8 void eir_create(struct hci_dev *hdev, u8 *data);
10 u8 eir_create_adv_data(struct hci_dev *hdev, u8 instance, u8 *ptr);
11 u8 eir_create_scan_rsp(struct hci_dev *hdev, u8 instance, u8 *ptr);
13 u8 eir_append_local_name(struct hci_dev *hdev, u8 *eir, u8 ad_len);
14 u8 eir_append_appearance(struct hci_dev *hdev, u8 *ptr, u8 ad_len);
16 static inline u16 eir_append_data(u8 *eir, u16 eir_len, u8 type,
17 u8 *data, u8 data_len)
19 eir[eir_len++] = sizeof(type) + data_len;
20 eir[eir_len++] = type;
21 memcpy(&eir[eir_len], data, data_len);
27 static inline u16 eir_append_le16(u8 *eir, u16 eir_len, u8 type, u16 data)
29 eir[eir_len++] = sizeof(type) + sizeof(data);
30 eir[eir_len++] = type;
31 put_unaligned_le16(data, &eir[eir_len]);
32 eir_len += sizeof(data);
37 static inline void *eir_get_data(u8 *eir, size_t eir_len, u8 type,
45 while (parsed < eir_len - 1) {
46 u8 field_len = eir[0];
51 parsed += field_len + 1;
61 /* Zero length data */
66 *data_len = field_len - 1;