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