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