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 26 int 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 83 int 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 } 266 267 int 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 } 275 276 int 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 } 284