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1 | /* | |
2 | BlueZ - Bluetooth protocol stack for Linux | |
3 | Copyright (C) 2014 Intel Corporation | |
4 | ||
5 | This program is free software; you can redistribute it and/or modify | |
6 | it under the terms of the GNU General Public License version 2 as | |
7 | published by the Free Software Foundation; | |
8 | ||
9 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS | |
10 | OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
11 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. | |
12 | IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY | |
13 | CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES | |
14 | WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
15 | ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
16 | OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | |
17 | ||
18 | ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, | |
19 | COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS | |
20 | SOFTWARE IS DISCLAIMED. | |
21 | */ | |
22 | ||
23 | #include <asm/unaligned.h> | |
24 | ||
25 | #define hci_req_sync_lock(hdev) mutex_lock(&hdev->req_lock) | |
26 | #define hci_req_sync_unlock(hdev) mutex_unlock(&hdev->req_lock) | |
27 | ||
28 | struct hci_request { | |
29 | struct hci_dev *hdev; | |
30 | struct sk_buff_head cmd_q; | |
31 | ||
32 | /* If something goes wrong when building the HCI request, the error | |
33 | * value is stored in this field. | |
34 | */ | |
35 | int err; | |
36 | }; | |
37 | ||
38 | void hci_req_init(struct hci_request *req, struct hci_dev *hdev); | |
39 | int hci_req_run(struct hci_request *req, hci_req_complete_t complete); | |
40 | int hci_req_run_skb(struct hci_request *req, hci_req_complete_skb_t complete); | |
41 | void hci_req_add(struct hci_request *req, u16 opcode, u32 plen, | |
42 | const void *param); | |
43 | void hci_req_add_ev(struct hci_request *req, u16 opcode, u32 plen, | |
44 | const void *param, u8 event); | |
45 | void hci_req_cmd_complete(struct hci_dev *hdev, u16 opcode, u8 status, | |
46 | hci_req_complete_t *req_complete, | |
47 | hci_req_complete_skb_t *req_complete_skb); | |
48 | ||
49 | int hci_req_sync(struct hci_dev *hdev, int (*req)(struct hci_request *req, | |
50 | unsigned long opt), | |
51 | unsigned long opt, u32 timeout, u8 *hci_status); | |
52 | int __hci_req_sync(struct hci_dev *hdev, int (*func)(struct hci_request *req, | |
53 | unsigned long opt), | |
54 | unsigned long opt, u32 timeout, u8 *hci_status); | |
55 | void hci_req_sync_cancel(struct hci_dev *hdev, int err); | |
56 | ||
57 | struct sk_buff *hci_prepare_cmd(struct hci_dev *hdev, u16 opcode, u32 plen, | |
58 | const void *param); | |
59 | ||
60 | int __hci_req_hci_power_on(struct hci_dev *hdev); | |
61 | ||
62 | void __hci_req_write_fast_connectable(struct hci_request *req, bool enable); | |
63 | void __hci_req_update_name(struct hci_request *req); | |
64 | void __hci_req_update_eir(struct hci_request *req); | |
65 | ||
66 | void hci_req_add_le_scan_disable(struct hci_request *req); | |
67 | void hci_req_add_le_passive_scan(struct hci_request *req); | |
68 | ||
69 | void hci_req_reenable_advertising(struct hci_dev *hdev); | |
70 | void __hci_req_enable_advertising(struct hci_request *req); | |
71 | void __hci_req_disable_advertising(struct hci_request *req); | |
72 | void __hci_req_update_adv_data(struct hci_request *req, u8 instance); | |
73 | int hci_req_update_adv_data(struct hci_dev *hdev, u8 instance); | |
74 | void __hci_req_update_scan_rsp_data(struct hci_request *req, u8 instance); | |
75 | ||
76 | int __hci_req_schedule_adv_instance(struct hci_request *req, u8 instance, | |
77 | bool force); | |
78 | void hci_req_clear_adv_instance(struct hci_dev *hdev, struct sock *sk, | |
79 | struct hci_request *req, u8 instance, | |
80 | bool force); | |
81 | ||
82 | void __hci_req_update_class(struct hci_request *req); | |
83 | ||
84 | /* Returns true if HCI commands were queued */ | |
85 | bool hci_req_stop_discovery(struct hci_request *req); | |
86 | ||
87 | static inline void hci_req_update_scan(struct hci_dev *hdev) | |
88 | { | |
89 | queue_work(hdev->req_workqueue, &hdev->scan_update); | |
90 | } | |
91 | ||
92 | void __hci_req_update_scan(struct hci_request *req); | |
93 | ||
94 | int hci_update_random_address(struct hci_request *req, bool require_privacy, | |
95 | bool use_rpa, u8 *own_addr_type); | |
96 | ||
97 | int hci_abort_conn(struct hci_conn *conn, u8 reason); | |
98 | void __hci_abort_conn(struct hci_request *req, struct hci_conn *conn, | |
99 | u8 reason); | |
100 | ||
101 | static inline void hci_update_background_scan(struct hci_dev *hdev) | |
102 | { | |
103 | queue_work(hdev->req_workqueue, &hdev->bg_scan_update); | |
104 | } | |
105 | ||
106 | void hci_request_setup(struct hci_dev *hdev); | |
107 | void hci_request_cancel_all(struct hci_dev *hdev); | |
108 | ||
109 | u8 append_local_name(struct hci_dev *hdev, u8 *ptr, u8 ad_len); | |
110 | ||
111 | static inline u16 eir_append_data(u8 *eir, u16 eir_len, u8 type, | |
112 | u8 *data, u8 data_len) | |
113 | { | |
114 | eir[eir_len++] = sizeof(type) + data_len; | |
115 | eir[eir_len++] = type; | |
116 | memcpy(&eir[eir_len], data, data_len); | |
117 | eir_len += data_len; | |
118 | ||
119 | return eir_len; | |
120 | } | |
121 | ||
122 | static inline u16 eir_append_le16(u8 *eir, u16 eir_len, u8 type, u16 data) | |
123 | { | |
124 | eir[eir_len++] = sizeof(type) + sizeof(data); | |
125 | eir[eir_len++] = type; | |
126 | put_unaligned_le16(data, &eir[eir_len]); | |
127 | eir_len += sizeof(data); | |
128 | ||
129 | return eir_len; | |
130 | } |