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#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
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