#include "wifi_hal.h" #include "gscan.h" #ifndef __WIFI_HAL_RTT_H__ #define __WIFI_HAL_RTT_H__ /* channel operating width */ /* Ranging status */ typedef enum { RTT_STATUS_SUCCESS, RTT_STATUS_FAILURE, RTT_STATUS_FAIL_NO_RSP, RTT_STATUS_FAIL_INVALID_TS, // Invalid T1-T4 timestamp RTT_STATUS_FAIL_PROTOCOL, // 11mc protocol failed RTT_STATUS_FAIL_REJECTED, RTT_STATUS_FAIL_NOT_SCHEDULED_YET, RTT_STATUS_FAIL_SCHEDULE, // schedule failed RTT_STATUS_FAIL_TM_TIMEOUT, RTT_STATUS_FAIL_AP_ON_DIFF_CHANNEL, RTT_STATUS_FAIL_NO_CAPABILITY, RTT_STATUS_FAIL_BUSY_TRY_LATER, //2 side RTT if other side temporarily busy RTT_STATUS_ABORTED } wifi_rtt_status; /* RTT Type */ typedef enum { RTT_TYPE_INVALID, RTT_TYPE_1_SIDED, RTT_TYPE_2_SIDED, RTT_TYPE_AUTO, // Two sided if remote supports; one sided otherwise } wifi_rtt_type; /* RTT configuration */ typedef struct { mac_addr addr; // peer device mac address wifi_rtt_type type; // optional - rtt type hint. // RTT_TYPE_AUTO implies best effort wifi_peer_type peer; // optional - peer device hint (STA, P2P, AP) wifi_channel_info channel; // Required for STA-AP mode, optional for P2P, NBD etc. unsigned interval; // interval between RTT burst (unit ms). // Only valid when multi_burst = 1 unsigned num_burst; // total number of RTT bursts, 1 means single shot unsigned num_frames_per_burst; // num of frames in each RTT burst // for single side, measurement result num = frame number // for 2 side RTT, measurement result num = frame number - 1 unsigned num_retries_per_measurement_frame; // retry time for RTT MEASUREMENT frame //following fields are only valid for 2 side RTT unsigned num_retries_per_ftmr; byte LCI_request; // request LCI or not byte LCR_request; // request LCR or not unsigned burst_timeout; // unit of 250 us byte preamble; // 0- Legacy,1- HT, 2-VHT byte bw; //5, 10, 20, 40, 80,160 } wifi_rtt_config; /* RTT results*/ typedef struct { mac_addr addr; // device mac address unsigned burst_num; // # of burst inside a multi-burst request unsigned measurement_number; // total RTT measurement Frames unsigned success_number; // total successful RTT measurement Frames byte number_per_burst_peer; //Max number of FTM numbers per burst the other side support, //11mc only wifi_rtt_status status; // ranging status byte retry_after_duration; // in s , 11mc only, only for RTT_STATUS_FAIL_BUSY_TRY_LATER, 1-31s wifi_rtt_type type; // RTT type wifi_rssi rssi; // average rssi in 0.5 dB steps e.g. 143 implies -71.5 dB wifi_rssi rssi_spread; // rssi spread in 0.5 dB steps e.g. 5 implies 2.5 dB spread (optional) wifi_rate tx_rate; // TX rate wifi_rate rx_rate; // Rx rate wifi_timespan rtt; // round trip time in 0.1 nanoseconds wifi_timespan rtt_sd; // rtt standard deviation in 0.1 nanoseconds wifi_timespan rtt_spread; // difference between max and min rtt times recorded int distance; // distance in cm (optional) int distance_sd; // standard deviation in cm (optional) int distance_spread; // difference between max and min distance recorded (optional) wifi_timestamp ts; // time of the measurement (in microseconds since boot) int burst_duration; // in ms, How long the FW time is to finish one burst measurement wifi_information_element LCI; // for 11mc only, optional wifi_information_element LCR; // for 11mc only, optional } wifi_rtt_result; /* RTT result callback */ typedef struct { void (*on_rtt_results) (wifi_request_id id, unsigned num_results, wifi_rtt_result rtt_result[]); } wifi_rtt_event_handler; /* API to request RTT measurement */ wifi_error wifi_rtt_range_request(wifi_request_id id, wifi_interface_handle iface, unsigned num_rtt_config, wifi_rtt_config rtt_config[], wifi_rtt_event_handler handler); /* API to cancel RTT measurements */ wifi_error wifi_rtt_range_cancel(wifi_request_id id, wifi_interface_handle iface, unsigned num_devices, mac_addr addr[]); /* NBD ranging channel map */ typedef struct { wifi_channel availablity[32]; // specifies the channel map for each of the 16 TU windows // frequency of 0 => unspecified; which means firmware is // free to do whatever it wants in this window. } wifi_channel_map; /* API to start publishing the channel map on responder device in a NBD cluster. Responder device will take this request and schedule broadcasting the channel map in a NBD ranging attribute in a SDF. DE will automatically remove the ranging attribute from the OTA queue after number of DW specified by num_dw where Each DW is 512 TUs apart */ wifi_error wifi_rtt_channel_map_set(wifi_request_id id, wifi_interface_handle iface, wifi_channel_map *params, unsigned num_dw); /* API to clear the channel map on the responder device in a NBD cluster. Responder device will cancel future ranging channel request, starting from “next” DW interval and will also stop broadcasting NBD ranging attribute in SDF */ wifi_error wifi_rtt_channel_map_clear(wifi_request_id id, wifi_interface_handle iface); #define PREAMBLE_LEGACY 0x1 #define PREAMBLE_HT 0x2 #define PREAMBLE_VHT 0x4 #define BW_5_SUPPORT 0x1 #define BW_10_SUPPORT 0x2 #define BW_20_SUPPORT 0x4 #define BW_40_SUPPORT 0x8 #define BW_80_SUPPORT 0x10 #define BW_160_SUPPORT 0x20 /* RTT Capabilities */ typedef struct { byte rtt_one_sided_supported; // if 1-sided rtt data collection is supported byte rtt_ftm_supported; // if ftm rtt data collection is supported byte lci_support; byte lcr_support; byte preamble_support; //bit mask indicate what preamble is supported byte bw_support; //bit mask indicate what BW is supported } wifi_rtt_capabilities; /* RTT capabilities of the device */ wifi_error wifi_get_rtt_capabilities(wifi_interface_handle iface, wifi_rtt_capabilities *capabilities); /* debugging definitions */ enum { RTT_DEBUG_DISABLE, RTT_DEBUG_LOG, RTT_DEBUG_PROTO, RTT_DEBUG_BURST, RTT_DEBUG_ACCURACY, RTT_DEBUG_LOGDETAIL }; //rtt debug type enum { RTT_DEBUG_FORMAT_TXT, RTT_DEBUG_FORMAT_BINARY }; //rtt debug format typedef struct rtt_debug { unsigned version; unsigned len; // total length of after len field unsigned type; // rtt debug type unsigned format; //rtt debug format char dbuf[0]; // debug content } rtt_debug_t; /* set configuration for debug */ wifi_error wifi_rtt_debug_cfg(wifi_interface_handle h, unsigned rtt_dbg_type, char *cfgbuf, u32 cfg_buf_size); /* get the debug information */ wifi_error wifi_rtt_debug_get(wifi_interface_handle h, rtt_debug_t **debugbuf); /* free the debug buffer */ wifi_error wifi_rtt_debug_free(wifi_interface_handle h, rtt_debug_t *debugbuf); #endif