1 // SPDX-License-Identifier: GPL-2.0-only
2
3 /*
4 * Copyright (C) 2020 Google Corporation
5 */
6
7 #include <net/bluetooth/bluetooth.h>
8 #include <net/bluetooth/hci_core.h>
9 #include <net/bluetooth/mgmt.h>
10
11 #include "mgmt_util.h"
12 #include "mgmt_config.h"
13
14 #define HDEV_PARAM_U16(_param_name_) \
15 struct {\
16 struct mgmt_tlv entry; \
17 __le16 value; \
18 } __packed _param_name_
19
20 #define HDEV_PARAM_U8(_param_name_) \
21 struct {\
22 struct mgmt_tlv entry; \
23 __u8 value; \
24 } __packed _param_name_
25
26 #define TLV_SET_U16(_param_code_, _param_name_) \
27 { \
28 { cpu_to_le16(_param_code_), sizeof(__u16) }, \
29 cpu_to_le16(hdev->_param_name_) \
30 }
31
32 #define TLV_SET_U8(_param_code_, _param_name_) \
33 { \
34 { cpu_to_le16(_param_code_), sizeof(__u8) }, \
35 hdev->_param_name_ \
36 }
37
38 #define TLV_SET_U16_JIFFIES_TO_MSECS(_param_code_, _param_name_) \
39 { \
40 { cpu_to_le16(_param_code_), sizeof(__u16) }, \
41 cpu_to_le16(jiffies_to_msecs(hdev->_param_name_)) \
42 }
43
read_def_system_config(struct sock * sk,struct hci_dev * hdev,void * data,u16 data_len)44 int read_def_system_config(struct sock *sk, struct hci_dev *hdev, void *data,
45 u16 data_len)
46 {
47 int ret;
48 struct mgmt_rp_read_def_system_config {
49 /* Please see mgmt-api.txt for documentation of these values */
50 HDEV_PARAM_U16(def_page_scan_type);
51 HDEV_PARAM_U16(def_page_scan_int);
52 HDEV_PARAM_U16(def_page_scan_window);
53 HDEV_PARAM_U16(def_inq_scan_type);
54 HDEV_PARAM_U16(def_inq_scan_int);
55 HDEV_PARAM_U16(def_inq_scan_window);
56 HDEV_PARAM_U16(def_br_lsto);
57 HDEV_PARAM_U16(def_page_timeout);
58 HDEV_PARAM_U16(sniff_min_interval);
59 HDEV_PARAM_U16(sniff_max_interval);
60 HDEV_PARAM_U16(le_adv_min_interval);
61 HDEV_PARAM_U16(le_adv_max_interval);
62 HDEV_PARAM_U16(def_multi_adv_rotation_duration);
63 HDEV_PARAM_U16(le_scan_interval);
64 HDEV_PARAM_U16(le_scan_window);
65 HDEV_PARAM_U16(le_scan_int_suspend);
66 HDEV_PARAM_U16(le_scan_window_suspend);
67 HDEV_PARAM_U16(le_scan_int_discovery);
68 HDEV_PARAM_U16(le_scan_window_discovery);
69 HDEV_PARAM_U16(le_scan_int_adv_monitor);
70 HDEV_PARAM_U16(le_scan_window_adv_monitor);
71 HDEV_PARAM_U16(le_scan_int_connect);
72 HDEV_PARAM_U16(le_scan_window_connect);
73 HDEV_PARAM_U16(le_conn_min_interval);
74 HDEV_PARAM_U16(le_conn_max_interval);
75 HDEV_PARAM_U16(le_conn_latency);
76 HDEV_PARAM_U16(le_supv_timeout);
77 HDEV_PARAM_U16(def_le_autoconnect_timeout);
78 HDEV_PARAM_U16(advmon_allowlist_duration);
79 HDEV_PARAM_U16(advmon_no_filter_duration);
80 HDEV_PARAM_U8(enable_advmon_interleave_scan);
81 } __packed rp = {
82 TLV_SET_U16(0x0000, def_page_scan_type),
83 TLV_SET_U16(0x0001, def_page_scan_int),
84 TLV_SET_U16(0x0002, def_page_scan_window),
85 TLV_SET_U16(0x0003, def_inq_scan_type),
86 TLV_SET_U16(0x0004, def_inq_scan_int),
87 TLV_SET_U16(0x0005, def_inq_scan_window),
88 TLV_SET_U16(0x0006, def_br_lsto),
89 TLV_SET_U16(0x0007, def_page_timeout),
90 TLV_SET_U16(0x0008, sniff_min_interval),
91 TLV_SET_U16(0x0009, sniff_max_interval),
92 TLV_SET_U16(0x000a, le_adv_min_interval),
93 TLV_SET_U16(0x000b, le_adv_max_interval),
94 TLV_SET_U16(0x000c, def_multi_adv_rotation_duration),
95 TLV_SET_U16(0x000d, le_scan_interval),
96 TLV_SET_U16(0x000e, le_scan_window),
97 TLV_SET_U16(0x000f, le_scan_int_suspend),
98 TLV_SET_U16(0x0010, le_scan_window_suspend),
99 TLV_SET_U16(0x0011, le_scan_int_discovery),
100 TLV_SET_U16(0x0012, le_scan_window_discovery),
101 TLV_SET_U16(0x0013, le_scan_int_adv_monitor),
102 TLV_SET_U16(0x0014, le_scan_window_adv_monitor),
103 TLV_SET_U16(0x0015, le_scan_int_connect),
104 TLV_SET_U16(0x0016, le_scan_window_connect),
105 TLV_SET_U16(0x0017, le_conn_min_interval),
106 TLV_SET_U16(0x0018, le_conn_max_interval),
107 TLV_SET_U16(0x0019, le_conn_latency),
108 TLV_SET_U16(0x001a, le_supv_timeout),
109 TLV_SET_U16_JIFFIES_TO_MSECS(0x001b,
110 def_le_autoconnect_timeout),
111 TLV_SET_U16(0x001d, advmon_allowlist_duration),
112 TLV_SET_U16(0x001e, advmon_no_filter_duration),
113 TLV_SET_U8(0x001f, enable_advmon_interleave_scan),
114 };
115
116 bt_dev_dbg(hdev, "sock %p", sk);
117
118 ret = mgmt_cmd_complete(sk, hdev->id,
119 MGMT_OP_READ_DEF_SYSTEM_CONFIG,
120 0, &rp, sizeof(rp));
121 return ret;
122 }
123
124 #define TO_TLV(x) ((struct mgmt_tlv *)(x))
125 #define TLV_GET_LE16(tlv) le16_to_cpu(*((__le16 *)(TO_TLV(tlv)->value)))
126 #define TLV_GET_U8(tlv) (*((__u8 *)(TO_TLV(tlv)->value)))
127
set_def_system_config(struct sock * sk,struct hci_dev * hdev,void * data,u16 data_len)128 int set_def_system_config(struct sock *sk, struct hci_dev *hdev, void *data,
129 u16 data_len)
130 {
131 u16 buffer_left = data_len;
132 u8 *buffer = data;
133
134 if (buffer_left < sizeof(struct mgmt_tlv)) {
135 return mgmt_cmd_status(sk, hdev->id,
136 MGMT_OP_SET_DEF_SYSTEM_CONFIG,
137 MGMT_STATUS_INVALID_PARAMS);
138 }
139
140 /* First pass to validate the tlv */
141 while (buffer_left >= sizeof(struct mgmt_tlv)) {
142 const u8 len = TO_TLV(buffer)->length;
143 size_t exp_type_len;
144 const u16 exp_len = sizeof(struct mgmt_tlv) +
145 len;
146 const u16 type = le16_to_cpu(TO_TLV(buffer)->type);
147
148 if (buffer_left < exp_len) {
149 bt_dev_warn(hdev, "invalid len left %u, exp >= %u",
150 buffer_left, exp_len);
151
152 return mgmt_cmd_status(sk, hdev->id,
153 MGMT_OP_SET_DEF_SYSTEM_CONFIG,
154 MGMT_STATUS_INVALID_PARAMS);
155 }
156
157 /* Please see mgmt-api.txt for documentation of these values */
158 switch (type) {
159 case 0x0000:
160 case 0x0001:
161 case 0x0002:
162 case 0x0003:
163 case 0x0004:
164 case 0x0005:
165 case 0x0006:
166 case 0x0007:
167 case 0x0008:
168 case 0x0009:
169 case 0x000a:
170 case 0x000b:
171 case 0x000c:
172 case 0x000d:
173 case 0x000e:
174 case 0x000f:
175 case 0x0010:
176 case 0x0011:
177 case 0x0012:
178 case 0x0013:
179 case 0x0014:
180 case 0x0015:
181 case 0x0016:
182 case 0x0017:
183 case 0x0018:
184 case 0x0019:
185 case 0x001a:
186 case 0x001b:
187 case 0x001d:
188 case 0x001e:
189 exp_type_len = sizeof(u16);
190 break;
191 case 0x001f:
192 exp_type_len = sizeof(u8);
193 break;
194 default:
195 exp_type_len = 0;
196 bt_dev_warn(hdev, "unsupported parameter %u", type);
197 break;
198 }
199
200 if (exp_type_len && len != exp_type_len) {
201 bt_dev_warn(hdev, "invalid length %d, exp %zu for type %u",
202 len, exp_type_len, type);
203
204 return mgmt_cmd_status(sk, hdev->id,
205 MGMT_OP_SET_DEF_SYSTEM_CONFIG,
206 MGMT_STATUS_INVALID_PARAMS);
207 }
208
209 buffer_left -= exp_len;
210 buffer += exp_len;
211 }
212
213 buffer_left = data_len;
214 buffer = data;
215 while (buffer_left >= sizeof(struct mgmt_tlv)) {
216 const u8 len = TO_TLV(buffer)->length;
217 const u16 exp_len = sizeof(struct mgmt_tlv) +
218 len;
219 const u16 type = le16_to_cpu(TO_TLV(buffer)->type);
220
221 switch (type) {
222 case 0x0000:
223 hdev->def_page_scan_type = TLV_GET_LE16(buffer);
224 break;
225 case 0x0001:
226 hdev->def_page_scan_int = TLV_GET_LE16(buffer);
227 break;
228 case 0x0002:
229 hdev->def_page_scan_window = TLV_GET_LE16(buffer);
230 break;
231 case 0x0003:
232 hdev->def_inq_scan_type = TLV_GET_LE16(buffer);
233 break;
234 case 0x0004:
235 hdev->def_inq_scan_int = TLV_GET_LE16(buffer);
236 break;
237 case 0x0005:
238 hdev->def_inq_scan_window = TLV_GET_LE16(buffer);
239 break;
240 case 0x0006:
241 hdev->def_br_lsto = TLV_GET_LE16(buffer);
242 break;
243 case 0x0007:
244 hdev->def_page_timeout = TLV_GET_LE16(buffer);
245 break;
246 case 0x0008:
247 hdev->sniff_min_interval = TLV_GET_LE16(buffer);
248 break;
249 case 0x0009:
250 hdev->sniff_max_interval = TLV_GET_LE16(buffer);
251 break;
252 case 0x000a:
253 hdev->le_adv_min_interval = TLV_GET_LE16(buffer);
254 break;
255 case 0x000b:
256 hdev->le_adv_max_interval = TLV_GET_LE16(buffer);
257 break;
258 case 0x000c:
259 hdev->def_multi_adv_rotation_duration =
260 TLV_GET_LE16(buffer);
261 break;
262 case 0x000d:
263 hdev->le_scan_interval = TLV_GET_LE16(buffer);
264 break;
265 case 0x000e:
266 hdev->le_scan_window = TLV_GET_LE16(buffer);
267 break;
268 case 0x000f:
269 hdev->le_scan_int_suspend = TLV_GET_LE16(buffer);
270 break;
271 case 0x0010:
272 hdev->le_scan_window_suspend = TLV_GET_LE16(buffer);
273 break;
274 case 0x0011:
275 hdev->le_scan_int_discovery = TLV_GET_LE16(buffer);
276 break;
277 case 0x00012:
278 hdev->le_scan_window_discovery = TLV_GET_LE16(buffer);
279 break;
280 case 0x00013:
281 hdev->le_scan_int_adv_monitor = TLV_GET_LE16(buffer);
282 break;
283 case 0x00014:
284 hdev->le_scan_window_adv_monitor = TLV_GET_LE16(buffer);
285 break;
286 case 0x00015:
287 hdev->le_scan_int_connect = TLV_GET_LE16(buffer);
288 break;
289 case 0x00016:
290 hdev->le_scan_window_connect = TLV_GET_LE16(buffer);
291 break;
292 case 0x00017:
293 hdev->le_conn_min_interval = TLV_GET_LE16(buffer);
294 break;
295 case 0x00018:
296 hdev->le_conn_max_interval = TLV_GET_LE16(buffer);
297 break;
298 case 0x00019:
299 hdev->le_conn_latency = TLV_GET_LE16(buffer);
300 break;
301 case 0x0001a:
302 hdev->le_supv_timeout = TLV_GET_LE16(buffer);
303 break;
304 case 0x0001b:
305 hdev->def_le_autoconnect_timeout =
306 msecs_to_jiffies(TLV_GET_LE16(buffer));
307 break;
308 case 0x0001d:
309 hdev->advmon_allowlist_duration = TLV_GET_LE16(buffer);
310 break;
311 case 0x0001e:
312 hdev->advmon_no_filter_duration = TLV_GET_LE16(buffer);
313 break;
314 case 0x0001f:
315 hdev->enable_advmon_interleave_scan = TLV_GET_U8(buffer);
316 break;
317 default:
318 bt_dev_warn(hdev, "unsupported parameter %u", type);
319 break;
320 }
321
322 buffer_left -= exp_len;
323 buffer += exp_len;
324 }
325
326 return mgmt_cmd_complete(sk, hdev->id,
327 MGMT_OP_SET_DEF_SYSTEM_CONFIG, 0, NULL, 0);
328 }
329
read_def_runtime_config(struct sock * sk,struct hci_dev * hdev,void * data,u16 data_len)330 int read_def_runtime_config(struct sock *sk, struct hci_dev *hdev, void *data,
331 u16 data_len)
332 {
333 bt_dev_dbg(hdev, "sock %p", sk);
334
335 return mgmt_cmd_complete(sk, hdev->id,
336 MGMT_OP_READ_DEF_RUNTIME_CONFIG, 0, NULL, 0);
337 }
338
set_def_runtime_config(struct sock * sk,struct hci_dev * hdev,void * data,u16 data_len)339 int set_def_runtime_config(struct sock *sk, struct hci_dev *hdev, void *data,
340 u16 data_len)
341 {
342 bt_dev_dbg(hdev, "sock %p", sk);
343
344 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_DEF_SYSTEM_CONFIG,
345 MGMT_STATUS_INVALID_PARAMS);
346 }
347
