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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_code_, _param_name_) \
15{ \
16 { cpu_to_le16(_param_code_), sizeof(__u16) }, \
17 { cpu_to_le16(hdev->_param_name_) } \
18}
19
20#define HDEV_PARAM_U16_JIFFIES_TO_MSECS(_param_code_, _param_name_) \
21{ \
22 { cpu_to_le16(_param_code_), sizeof(__u16) }, \
23 { cpu_to_le16(jiffies_to_msecs(hdev->_param_name_)) } \
24}
25
26int read_def_system_config(struct sock *sk, struct hci_dev *hdev, void *data,
27 u16 data_len)
28{
29 struct {
30 struct mgmt_tlv entry;
31 union {
32 /* This is a simplification for now since all values
33 * are 16 bits. In the future, this code may need
34 * refactoring to account for variable length values
35 * and properly calculate the required buffer size.
36 */
37 __le16 value;
38 };
39 } __packed params[] = {
40 /* Please see mgmt-api.txt for documentation of these values */
41 HDEV_PARAM_U16(0x0000, def_page_scan_type),
42 HDEV_PARAM_U16(0x0001, def_page_scan_int),
43 HDEV_PARAM_U16(0x0002, def_page_scan_window),
44 HDEV_PARAM_U16(0x0003, def_inq_scan_type),
45 HDEV_PARAM_U16(0x0004, def_inq_scan_int),
46 HDEV_PARAM_U16(0x0005, def_inq_scan_window),
47 HDEV_PARAM_U16(0x0006, def_br_lsto),
48 HDEV_PARAM_U16(0x0007, def_page_timeout),
49 HDEV_PARAM_U16(0x0008, sniff_min_interval),
50 HDEV_PARAM_U16(0x0009, sniff_max_interval),
51 HDEV_PARAM_U16(0x000a, le_adv_min_interval),
52 HDEV_PARAM_U16(0x000b, le_adv_max_interval),
53 HDEV_PARAM_U16(0x000c, def_multi_adv_rotation_duration),
54 HDEV_PARAM_U16(0x000d, le_scan_interval),
55 HDEV_PARAM_U16(0x000e, le_scan_window),
56 HDEV_PARAM_U16(0x000f, le_scan_int_suspend),
57 HDEV_PARAM_U16(0x0010, le_scan_window_suspend),
58 HDEV_PARAM_U16(0x0011, le_scan_int_discovery),
59 HDEV_PARAM_U16(0x0012, le_scan_window_discovery),
60 HDEV_PARAM_U16(0x0013, le_scan_int_adv_monitor),
61 HDEV_PARAM_U16(0x0014, le_scan_window_adv_monitor),
62 HDEV_PARAM_U16(0x0015, le_scan_int_connect),
63 HDEV_PARAM_U16(0x0016, le_scan_window_connect),
64 HDEV_PARAM_U16(0x0017, le_conn_min_interval),
65 HDEV_PARAM_U16(0x0018, le_conn_max_interval),
66 HDEV_PARAM_U16(0x0019, le_conn_latency),
67 HDEV_PARAM_U16(0x001a, le_supv_timeout),
68 HDEV_PARAM_U16_JIFFIES_TO_MSECS(0x001b,
69 def_le_autoconnect_timeout),
70 };
71 struct mgmt_rp_read_def_system_config *rp = (void *)params;
72
73 bt_dev_dbg(hdev, "sock %p", sk);
74
75 return mgmt_cmd_complete(sk, hdev->id,
76 MGMT_OP_READ_DEF_SYSTEM_CONFIG,
77 0, rp, sizeof(params));
78}
79
80#define TO_TLV(x) ((struct mgmt_tlv *)(x))
81#define TLV_GET_LE16(tlv) le16_to_cpu(*((__le16 *)(TO_TLV(tlv)->value)))
82
83int set_def_system_config(struct sock *sk, struct hci_dev *hdev, void *data,
84 u16 data_len)
85{
86 u16 buffer_left = data_len;
87 u8 *buffer = data;
88
89 if (buffer_left < sizeof(struct mgmt_tlv)) {
90 return mgmt_cmd_status(sk, hdev->id,
91 MGMT_OP_SET_DEF_SYSTEM_CONFIG,
92 MGMT_STATUS_INVALID_PARAMS);
93 }
94
95 /* First pass to validate the tlv */
96 while (buffer_left >= sizeof(struct mgmt_tlv)) {
97 const u8 len = TO_TLV(buffer)->length;
98 const u16 exp_len = sizeof(struct mgmt_tlv) +
99 len;
100 const u16 type = le16_to_cpu(TO_TLV(buffer)->type);
101
102 if (buffer_left < exp_len) {
103 bt_dev_warn(hdev, "invalid len left %d, exp >= %d",
104 buffer_left, exp_len);
105
106 return mgmt_cmd_status(sk, hdev->id,
107 MGMT_OP_SET_DEF_SYSTEM_CONFIG,
108 MGMT_STATUS_INVALID_PARAMS);
109 }
110
111 /* Please see mgmt-api.txt for documentation of these values */
112 switch (type) {
113 case 0x0000:
114 case 0x0001:
115 case 0x0002:
116 case 0x0003:
117 case 0x0004:
118 case 0x0005:
119 case 0x0006:
120 case 0x0007:
121 case 0x0008:
122 case 0x0009:
123 case 0x000a:
124 case 0x000b:
125 case 0x000c:
126 case 0x000d:
127 case 0x000e:
128 case 0x000f:
129 case 0x0010:
130 case 0x0011:
131 case 0x0012:
132 case 0x0013:
133 case 0x0014:
134 case 0x0015:
135 case 0x0016:
136 case 0x0017:
137 case 0x0018:
138 case 0x0019:
139 case 0x001a:
140 case 0x001b:
141 if (len != sizeof(u16)) {
142 bt_dev_warn(hdev, "invalid length %d, exp %zu for type %d",
143 len, sizeof(u16), type);
144
145 return mgmt_cmd_status(sk, hdev->id,
146 MGMT_OP_SET_DEF_SYSTEM_CONFIG,
147 MGMT_STATUS_INVALID_PARAMS);
148 }
149 break;
150 default:
151 bt_dev_warn(hdev, "unsupported parameter %u", type);
152 break;
153 }
154
155 buffer_left -= exp_len;
156 buffer += exp_len;
157 }
158
159 buffer_left = data_len;
160 buffer = data;
161 while (buffer_left >= sizeof(struct mgmt_tlv)) {
162 const u8 len = TO_TLV(buffer)->length;
163 const u16 exp_len = sizeof(struct mgmt_tlv) +
164 len;
165 const u16 type = le16_to_cpu(TO_TLV(buffer)->type);
166
167 switch (type) {
168 case 0x0000:
169 hdev->def_page_scan_type = TLV_GET_LE16(buffer);
170 break;
171 case 0x0001:
172 hdev->def_page_scan_int = TLV_GET_LE16(buffer);
173 break;
174 case 0x0002:
175 hdev->def_page_scan_window = TLV_GET_LE16(buffer);
176 break;
177 case 0x0003:
178 hdev->def_inq_scan_type = TLV_GET_LE16(buffer);
179 break;
180 case 0x0004:
181 hdev->def_inq_scan_int = TLV_GET_LE16(buffer);
182 break;
183 case 0x0005:
184 hdev->def_inq_scan_window = TLV_GET_LE16(buffer);
185 break;
186 case 0x0006:
187 hdev->def_br_lsto = TLV_GET_LE16(buffer);
188 break;
189 case 0x0007:
190 hdev->def_page_timeout = TLV_GET_LE16(buffer);
191 break;
192 case 0x0008:
193 hdev->sniff_min_interval = TLV_GET_LE16(buffer);
194 break;
195 case 0x0009:
196 hdev->sniff_max_interval = TLV_GET_LE16(buffer);
197 break;
198 case 0x000a:
199 hdev->le_adv_min_interval = TLV_GET_LE16(buffer);
200 break;
201 case 0x000b:
202 hdev->le_adv_max_interval = TLV_GET_LE16(buffer);
203 break;
204 case 0x000c:
205 hdev->def_multi_adv_rotation_duration =
206 TLV_GET_LE16(buffer);
207 break;
208 case 0x000d:
209 hdev->le_scan_interval = TLV_GET_LE16(buffer);
210 break;
211 case 0x000e:
212 hdev->le_scan_window = TLV_GET_LE16(buffer);
213 break;
214 case 0x000f:
215 hdev->le_scan_int_suspend = TLV_GET_LE16(buffer);
216 break;
217 case 0x0010:
218 hdev->le_scan_window_suspend = TLV_GET_LE16(buffer);
219 break;
220 case 0x0011:
221 hdev->le_scan_int_discovery = TLV_GET_LE16(buffer);
222 break;
223 case 0x00012:
224 hdev->le_scan_window_discovery = TLV_GET_LE16(buffer);
225 break;
226 case 0x00013:
227 hdev->le_scan_int_adv_monitor = TLV_GET_LE16(buffer);
228 break;
229 case 0x00014:
230 hdev->le_scan_window_adv_monitor = TLV_GET_LE16(buffer);
231 break;
232 case 0x00015:
233 hdev->le_scan_int_connect = TLV_GET_LE16(buffer);
234 break;
235 case 0x00016:
236 hdev->le_scan_window_connect = TLV_GET_LE16(buffer);
237 break;
238 case 0x00017:
239 hdev->le_conn_min_interval = TLV_GET_LE16(buffer);
240 break;
241 case 0x00018:
242 hdev->le_conn_max_interval = TLV_GET_LE16(buffer);
243 break;
244 case 0x00019:
245 hdev->le_conn_latency = TLV_GET_LE16(buffer);
246 break;
247 case 0x0001a:
248 hdev->le_supv_timeout = TLV_GET_LE16(buffer);
249 break;
250 case 0x0001b:
251 hdev->def_le_autoconnect_timeout =
252 msecs_to_jiffies(TLV_GET_LE16(buffer));
253 break;
254 default:
255 bt_dev_warn(hdev, "unsupported parameter %u", type);
256 break;
257 }
258
259 buffer_left -= exp_len;
260 buffer += exp_len;
261 }
262
263 return mgmt_cmd_complete(sk, hdev->id,
264 MGMT_OP_SET_DEF_SYSTEM_CONFIG, 0, NULL, 0);
265}
266
267int read_def_runtime_config(struct sock *sk, struct hci_dev *hdev, void *data,
268 u16 data_len)
269{
270 bt_dev_dbg(hdev, "sock %p", sk);
271
272 return mgmt_cmd_complete(sk, hdev->id,
273 MGMT_OP_READ_DEF_RUNTIME_CONFIG, 0, NULL, 0);
274}
275
276int set_def_runtime_config(struct sock *sk, struct hci_dev *hdev, void *data,
277 u16 data_len)
278{
279 bt_dev_dbg(hdev, "sock %p", sk);
280
281 return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_DEF_SYSTEM_CONFIG,
282 MGMT_STATUS_INVALID_PARAMS);
283}