1 2 #include "wifi_hal.h" 3 #include "gscan.h" 4 5 #ifndef __WIFI_HAL_RTT_H__ 6 #define __WIFI_HAL_RTT_H__ 7 8 /* Ranging status */ 9 typedef enum { 10 RTT_STATUS_SUCCESS = 0, 11 RTT_STATUS_FAILURE = 1, // general failure status 12 RTT_STATUS_FAIL_NO_RSP = 2, // target STA does not respond to request 13 RTT_STATUS_FAIL_REJECTED = 3, // request rejected. Applies to 2-sided RTT only 14 RTT_STATUS_FAIL_NOT_SCHEDULED_YET = 4, 15 RTT_STATUS_FAIL_TM_TIMEOUT = 5, // timing measurement times out 16 RTT_STATUS_FAIL_AP_ON_DIFF_CHANNEL = 6, // Target on different channel, cannot range 17 RTT_STATUS_FAIL_NO_CAPABILITY = 7, // ranging not supported 18 RTT_STATUS_ABORTED = 8, // request aborted for unknown reason 19 RTT_STATUS_FAIL_INVALID_TS = 9, // Invalid T1-T4 timestamp 20 RTT_STATUS_FAIL_PROTOCOL = 10, // 11mc protocol failed 21 RTT_STATUS_FAIL_SCHEDULE = 11, // request could not be scheduled 22 RTT_STATUS_FAIL_BUSY_TRY_LATER = 12, // responder cannot collaborate at time of request 23 RTT_STATUS_INVALID_REQ = 13, // bad request args 24 RTT_STATUS_NO_WIFI = 14, // WiFi not enabled 25 RTT_STATUS_FAIL_FTM_PARAM_OVERRIDE = 15, // Responder overrides param info, cannot range with new params 26 RTT_STATUS_NAN_RANGING_PROTOCOL_FAILURE =16, //Negotiation failure 27 RTT_STATUS_NAN_RANGING_CONCURRENCY_NOT_SUPPORTED=17, //concurrency not supported (NDP+RTT) 28 } wifi_rtt_status; 29 30 /* RTT peer type */ 31 typedef enum { 32 RTT_PEER_AP = 0x1, 33 RTT_PEER_STA = 0x2, 34 RTT_PEER_P2P_GO = 0x3, 35 RTT_PEER_P2P_CLIENT = 0x4, 36 RTT_PEER_NAN = 0x5 37 } rtt_peer_type; 38 39 /* RTT Measurement Bandwidth */ 40 typedef enum { 41 WIFI_RTT_BW_5 = 0x01, 42 WIFI_RTT_BW_10 = 0x02, 43 WIFI_RTT_BW_20 = 0x04, 44 WIFI_RTT_BW_40 = 0x08, 45 WIFI_RTT_BW_80 = 0x10, 46 WIFI_RTT_BW_160 = 0x20 47 } wifi_rtt_bw; 48 49 /* RTT Measurement Preamble */ 50 typedef enum { 51 WIFI_RTT_PREAMBLE_LEGACY = 0x1, 52 WIFI_RTT_PREAMBLE_HT = 0x2, 53 WIFI_RTT_PREAMBLE_VHT = 0x4, 54 WIFI_RTT_PREAMBLE_HE = 0x8 55 } wifi_rtt_preamble; 56 57 /* RTT Type */ 58 typedef enum { 59 RTT_TYPE_1_SIDED = 0x1, 60 RTT_TYPE_2_SIDED = 0x2, 61 } wifi_rtt_type; 62 63 /* RTT configuration */ 64 typedef struct { 65 mac_addr addr; // peer device mac address 66 wifi_rtt_type type; // 1-sided or 2-sided RTT 67 rtt_peer_type peer; // optional - peer device hint (STA, P2P, AP) 68 wifi_channel_info channel; // Required for STA-AP mode, optional for P2P, NBD etc. 69 unsigned burst_period; // Time interval between bursts (units: 100 ms). 70 // Applies to 1-sided and 2-sided RTT multi-burst requests. 71 // Range: 0-31, 0: no preference by initiator (2-sided RTT) 72 unsigned num_burst; // Total number of RTT bursts to be executed. It will be 73 // specified in the same way as the parameter "Number of 74 // Burst Exponent" found in the FTM frame format. It 75 // applies to both: 1-sided RTT and 2-sided RTT. Valid 76 // values are 0 to 15 as defined in 802.11mc std. 77 // 0 means single shot 78 // The implication of this parameter on the maximum 79 // number of RTT results is the following: 80 // for 1-sided RTT: max num of RTT results = (2^num_burst)*(num_frames_per_burst) 81 // for 2-sided RTT: max num of RTT results = (2^num_burst)*(num_frames_per_burst - 1) 82 unsigned num_frames_per_burst; // num of frames per burst. 83 // Minimum value = 1, Maximum value = 31 84 // For 2-sided this equals the number of FTM frames 85 // to be attempted in a single burst. This also 86 // equals the number of FTM frames that the 87 // initiator will request that the responder send 88 // in a single frame. 89 unsigned num_retries_per_rtt_frame; // number of retries for a failed RTT frame. Applies 90 // to 1-sided RTT only. Minimum value = 0, Maximum value = 3 91 92 //following fields are only valid for 2-side RTT 93 unsigned num_retries_per_ftmr; // Maximum number of retries that the initiator can 94 // retry an FTMR frame. 95 // Minimum value = 0, Maximum value = 3 96 byte LCI_request; // 1: request LCI, 0: do not request LCI 97 byte LCR_request; // 1: request LCR, 0: do not request LCR 98 unsigned burst_duration; // Applies to 1-sided and 2-sided RTT. Valid values will 99 // be 2-11 and 15 as specified by the 802.11mc std for 100 // the FTM parameter burst duration. In a multi-burst 101 // request, if responder overrides with larger value, 102 // the initiator will return failure. In a single-burst 103 // request if responder overrides with larger value, 104 // the initiator will sent TMR_STOP to terminate RTT 105 // at the end of the burst_duration it requested. 106 wifi_rtt_preamble preamble; // RTT preamble to be used in the RTT frames 107 wifi_rtt_bw bw; // RTT BW to be used in the RTT frames 108 } wifi_rtt_config; 109 110 /* RTT results */ 111 typedef struct { 112 mac_addr addr; // device mac address 113 unsigned burst_num; // burst number in a multi-burst request 114 unsigned measurement_number; // Total RTT measurement frames attempted 115 unsigned success_number; // Total successful RTT measurement frames 116 byte number_per_burst_peer; // Maximum number of "FTM frames per burst" supported by 117 // the responder STA. Applies to 2-sided RTT only. 118 // If reponder overrides with larger value: 119 // - for single-burst request initiator will truncate the 120 // larger value and send a TMR_STOP after receiving as 121 // many frames as originally requested. 122 // - for multi-burst request, initiator will return 123 // failure right away. 124 wifi_rtt_status status; // ranging status 125 byte retry_after_duration; // When status == RTT_STATUS_FAIL_BUSY_TRY_LATER, 126 // this will be the time provided by the responder as to 127 // when the request can be tried again. Applies to 2-sided 128 // RTT only. In sec, 1-31sec. 129 wifi_rtt_type type; // RTT type 130 wifi_rssi rssi; // average rssi in 0.5 dB steps e.g. 143 implies -71.5 dB 131 wifi_rssi rssi_spread; // rssi spread in 0.5 dB steps e.g. 5 implies 2.5 dB spread (optional) 132 wifi_rate tx_rate; // 1-sided RTT: TX rate of RTT frame. 133 // 2-sided RTT: TX rate of initiator's Ack in response to FTM frame. 134 wifi_rate rx_rate; // 1-sided RTT: TX rate of Ack from other side. 135 // 2-sided RTT: TX rate of FTM frame coming from responder. 136 wifi_timespan rtt; // round trip time in picoseconds 137 wifi_timespan rtt_sd; // rtt standard deviation in picoseconds 138 wifi_timespan rtt_spread; // difference between max and min rtt times recorded in picoseconds 139 int distance_mm; // distance in mm (optional) 140 int distance_sd_mm; // standard deviation in mm (optional) 141 int distance_spread_mm; // difference between max and min distance recorded in mm (optional) 142 wifi_timestamp ts; // time of the measurement (in microseconds since boot) 143 int burst_duration; // in ms, actual time taken by the FW to finish one burst 144 // measurement. Applies to 1-sided and 2-sided RTT. 145 int negotiated_burst_num; // Number of bursts allowed by the responder. Applies 146 // to 2-sided RTT only. 147 wifi_information_element *LCI; // for 11mc only 148 wifi_information_element *LCR; // for 11mc only 149 } wifi_rtt_result; 150 151 /* RTT result callback */ 152 typedef struct { 153 void (*on_rtt_results) (wifi_request_id id, unsigned num_results, wifi_rtt_result *rtt_result[]); 154 } wifi_rtt_event_handler; 155 156 /* API to request RTT measurement */ 157 wifi_error wifi_rtt_range_request(wifi_request_id id, wifi_interface_handle iface, 158 unsigned num_rtt_config, wifi_rtt_config rtt_config[], wifi_rtt_event_handler handler); 159 160 /* API to cancel RTT measurements */ 161 wifi_error wifi_rtt_range_cancel(wifi_request_id id, wifi_interface_handle iface, 162 unsigned num_devices, mac_addr addr[]); 163 164 /* NBD ranging channel map */ 165 typedef struct { 166 wifi_channel availablity[32]; // specifies the channel map for each of the 16 TU windows 167 // frequency of 0 => unspecified; which means firmware is 168 // free to do whatever it wants in this window. 169 } wifi_channel_map; 170 171 /* API to start publishing the channel map on responder device in a NBD cluster. 172 Responder device will take this request and schedule broadcasting the channel map 173 in a NBD ranging attribute in a SDF. DE will automatically remove the ranging 174 attribute from the OTA queue after number of DW specified by num_dw 175 where Each DW is 512 TUs apart */ 176 wifi_error wifi_rtt_channel_map_set(wifi_request_id id, 177 wifi_interface_handle iface, wifi_channel_map *params, unsigned num_dw); 178 179 /* API to clear the channel map on the responder device in a NBD cluster. 180 Responder device will cancel future ranging channel request, starting from “next” 181 DW interval and will also stop broadcasting NBD ranging attribute in SDF */ 182 wifi_error wifi_rtt_channel_map_clear(wifi_request_id id, wifi_interface_handle iface); 183 184 // Preamble definition for bit mask used in wifi_rtt_capabilities 185 #define PREAMBLE_LEGACY 0x1 186 #define PREAMBLE_HT 0x2 187 #define PREAMBLE_VHT 0x4 188 #define PREAMBLE_HE 0x8 189 190 // BW definition for bit mask used in wifi_rtt_capabilities 191 #define BW_5_SUPPORT 0x1 192 #define BW_10_SUPPORT 0x2 193 #define BW_20_SUPPORT 0x4 194 #define BW_40_SUPPORT 0x8 195 #define BW_80_SUPPORT 0x10 196 #define BW_160_SUPPORT 0x20 197 198 /* RTT Capabilities */ 199 typedef struct { 200 byte rtt_one_sided_supported; // if 1-sided rtt data collection is supported 201 byte rtt_ftm_supported; // if ftm rtt data collection is supported 202 byte lci_support; // if initiator supports LCI request. Applies to 2-sided RTT 203 byte lcr_support; // if initiator supports LCR request. Applies to 2-sided RTT 204 byte preamble_support; // bit mask indicates what preamble is supported by initiator 205 byte bw_support; // bit mask indicates what BW is supported by initiator 206 byte responder_supported; // if 11mc responder mode is supported 207 byte mc_version; // draft 11mc spec version supported by chip. For instance, 208 // version 4.0 should be 40 and version 4.3 should be 43 etc. 209 } wifi_rtt_capabilities; 210 211 /* RTT capabilities of the device */ 212 wifi_error wifi_get_rtt_capabilities(wifi_interface_handle iface, wifi_rtt_capabilities *capabilities); 213 214 /* debugging definitions */ 215 enum { 216 RTT_DEBUG_DISABLE, 217 RTT_DEBUG_LOG, 218 RTT_DEBUG_PROTO, 219 RTT_DEBUG_BURST, 220 RTT_DEBUG_ACCURACY, 221 RTT_DEBUG_LOGDETAIL 222 }; //rtt debug type 223 224 enum { 225 RTT_DEBUG_FORMAT_TXT, 226 RTT_DEBUG_FORMAT_BINARY 227 }; //rtt debug format 228 229 typedef struct rtt_debug { 230 unsigned version; 231 unsigned len; // total length of after len field 232 unsigned type; // rtt debug type 233 unsigned format; //rtt debug format 234 char dbuf[0]; // debug content 235 } rtt_debug_t; 236 237 /* set configuration for debug */ 238 wifi_error wifi_rtt_debug_cfg(wifi_interface_handle h, unsigned rtt_dbg_type, char *cfgbuf, unsigned cfg_buf_size); 239 /* get the debug information */ 240 wifi_error wifi_rtt_debug_get(wifi_interface_handle h, rtt_debug_t **debugbuf); 241 /* free the debug buffer */ 242 wifi_error wifi_rtt_debug_free(wifi_interface_handle h, rtt_debug_t *debugbuf); 243 244 /* API for setting LCI/LCR information to be provided to a requestor */ 245 typedef enum { 246 WIFI_MOTION_NOT_EXPECTED = 0, // Not expected to change location 247 WIFI_MOTION_EXPECTED = 1, // Expected to change location 248 WIFI_MOTION_UNKNOWN = 2, // Movement pattern unknown 249 } wifi_motion_pattern; 250 251 typedef struct { 252 long latitude; // latitude in degrees * 2^25 , 2's complement 253 long longitude; // latitude in degrees * 2^25 , 2's complement 254 int altitude; // Altitude in units of 1/256 m 255 byte latitude_unc; // As defined in Section 2.3.2 of IETF RFC 6225 256 byte longitude_unc; // As defined in Section 2.3.2 of IETF RFC 6225 257 byte altitude_unc; // As defined in Section 2.4.5 from IETF RFC 6225: 258 259 //Following element for configuring the Z subelement 260 wifi_motion_pattern motion_pattern; 261 int floor; // floor in units of 1/16th of floor. 0x80000000 if unknown. 262 int height_above_floor; // in units of 1/64 m 263 int height_unc; // in units of 1/64 m. 0 if unknown 264 } wifi_lci_information; 265 266 typedef struct { 267 char country_code[2]; // country code 268 int length; // length of the info field 269 char civic_info[256]; // Civic info to be copied in FTM frame 270 } wifi_lcr_information; 271 272 // API to configure the LCI. Used in RTT Responder mode only 273 wifi_error wifi_set_lci(wifi_request_id id, wifi_interface_handle iface, 274 wifi_lci_information *lci); 275 276 // API to configure the LCR. Used in RTT Responder mode only. 277 wifi_error wifi_set_lcr(wifi_request_id id, wifi_interface_handle iface, 278 wifi_lcr_information *lcr); 279 280 /** 281 * RTT Responder information 282 */ 283 typedef struct { 284 wifi_channel_info channel; 285 wifi_rtt_preamble preamble; 286 } wifi_rtt_responder; 287 288 /** 289 * Get RTT responder information e.g. WiFi channel to enable responder on. 290 */ 291 wifi_error wifi_rtt_get_responder_info(wifi_interface_handle iface, 292 wifi_rtt_responder *responder_info); 293 294 /** 295 * Enable RTT responder mode. 296 * channel_hint - hint of the channel information where RTT responder should be enabled on. 297 * max_duration_seconds - timeout of responder mode. 298 * channel_used - channel used for RTT responder, NULL if responder is not enabled. 299 */ 300 wifi_error wifi_enable_responder(wifi_request_id id, wifi_interface_handle iface, 301 wifi_channel_info channel_hint, unsigned max_duration_seconds, 302 wifi_rtt_responder *responder_info); 303 304 /** 305 * Disable RTT responder mode. 306 */ 307 wifi_error wifi_disable_responder(wifi_request_id id, wifi_interface_handle iface); 308 309 #endif 310