STRUCT IWL_TOF_RANGE_RSP_AP_ENTRY_NTFY_V4(9)

💖 struct iwl_tof_range_rsp_ap_entry_ntfy_v4(9) 💖

okay so bestie, this is a Kernel API Manual page — yes, another one — and it's all about struct iwl_tof_range_rsp_ap_entry_ntfy_v4. Cute name, I know. The manual name is struct iwl_...ntry_ntfy_v4(9) because apparently even doc generators get tired of typing the whole thing 💀. Anyway. Let's get into it.

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✨ NAME ✨

struct iwl_tof_range_rsp_ap_entry_ntfy_v4 — literally just: AP parameters (response). That's the vibe. 🎀

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🌸 SYNOPSIS 🌸

Here's the whole struct, character for character, no cap, don't touch it:

struct iwl_tof_range_rsp_ap_entry_ntfy_v4 {
    u8 bssid[ETH_ALEN];
    u8 measure_status;
    u8 measure_bw;
    __le32 rtt;
    __le32 rtt_variance;
    __le32 rtt_spread;
    s8 rssi;
    u8 rssi_spread;
    u8 last_burst;
    u8 refusal_period;
    __le32 timestamp;
    __le32 start_tsf;
    __le32 rx_rate_n_flags;
    __le32 tx_rate_n_flags;
    __le32 t2t3_initiator;
    __le32 t1t4_responder;
    __le16 common_calib;
    __le16 specific_calib;
    __le32 papd_calib_output;
};

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🦋 Members 🦋

okay so here's the field-by-field breakdown, and I'm gonna be so real with you, every single one is here 👑

• bssid — the BSSID of the AP. its little name tag 🏷️
• measure_status — the current AP's measurement status, and it's one of enum iwl_tof_entry_status. iykyk.
• measure_bw — the current AP Bandwidth, and the mapping is 0 = 20MHz, 1 = 40MHz, 2 = 80MHz. slay, we love a numbered list.
• rtt — The Round Trip Time that it took for the last measurement for the current AP [pSec]. picoseconds, bestie, we're measuring everything.
• rtt_variance — The Variance of the RTT values measured for the current AP.
• rtt_spread — The Difference between the maximum and the minimum RTT values measured for the current AP in the current session [pSec].
• rssi — RSSI as uploaded in the Channel Estimation notification.
• rssi_spread — The Difference between the maximum and the minimum RSSI values measured for the current AP in the current session.
• last_burst — 1 if no more FTM sessions are scheduled for this responder. like, we're done here, bye 💅
• refusal_period — refusal period in case of IWL_TOF_ENTRY_RESPONDER_CANNOT_COLABORATE [sec]. (yes, COLABORATE — one L — that's how it's spelled in the original and I'm not fixing it 🙈)
• timestamp — The GP2 Clock [usec] where the Channel Estimation notification was uploaded by the LMAC.
• start_tsf — measurement start time in TSF of the mac specified in the range request.
• rx_rate_n_flags — rate and flags of the last FTM frame received from this responder.
• tx_rate_n_flags — rate and flags of the last ack sent to this responder.
• t2t3_initiator — as calculated from the algo in the initiator. main character math ⭐
• t1t4_responder — as calculated from the algo in the responder. supporting cast math 🫶
• common_calib — Calib val that was used in for this AP measurement. (again — "used in for" — verbatim, not me, don't come for me 😭)
• specific_calib — val that was used in for this AP measurement.
• papd_calib_output — The result of the tof papd calibration that was injected into the algorithm. injected, like a truth bomb 💉

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🌈 SEE ALSO 🌈

the friend group. the whole crew. everyone shows up:

• Kernel file ./drivers/net/wireless/intel/iwlwifi/fw/api/location.h
• enum iwl_location_subcmd_ids(9)
• enum iwl_location_frame_format(9)
• enum iwl_location_bw(9)
• enum iwl_location_format_bw(9)
• struct iwl_tof_config_cmd(9)
• enum iwl_tof_bandwidth(9)
• enum iwl_tof_responder_cmd_valid_field(9)
• enum iwl_tof_responder_cfg_flags(9)
• struct iwl_tof_responder_config_cmd_v6(9)
• struct iwl_tof_responder_config_cmd_v7(9)
• struct iwl_tof_responder_config_cmd_v8(9)
• struct iwl_tof_responder_config_cmd_v9(9)
• struct iwl_tof_responder_config_cmd(9)
• struct iwl_tof_responder_dyn_config_cmd_v2(9)
• enum iwl_responder_dyn_cfg_valid_flags(9)
• struct iwl_tof_responder_dyn_config_cmd(9)
• struct iwl_tof_range_req_ext_cmd(9)
• enum iwl_tof_location_query(9)
• enum iwl_initiator_ap_flags(9)
• struct iwl_tof_range_req_ap_entry_v3(9)
• struct iwl_tof_range_req_ap_entry_v4(9)
• enum iwl_location_cipher(9)
• struct iwl_tof_range_req_ap_entry_v6(9)
• struct iwl_tof_range_req_ap_entry_v7(9)
• struct iwl_tof_range_req_ap_entry_v8(9)
• struct iwl_tof_range_req_ap_entry_v9(9)
• struct iwl_tof_range_req_ap_entry(9)
• enum iwl_tof_response_mode(9)
• enum iwl_tof_initiator_flags(9)
• struct iwl_tof_range_req_cmd_v5(9)
• struct iwl_tof_range_req_cmd_v7(9)
• struct iwl_tof_range_req_cmd_v8(9)
• struct iwl_tof_range_req_cmd_v9(9)
• struct iwl_tof_range_req_cmd_v11(9)
• struct iwl_tof_range_req_cmd_v12(9)
• struct iwl_tof_range_req_cmd_v13(9)
• struct iwl_tof_range_req_cmd(9)
• enum iwl_tof_entry_status(9)
• struct iwl_tof_range_rsp_ap_entry_ntfy_v3(9)
• struct iwl_tof_range_rsp_ap_entry_ntfy_v5(9)
• struct iwl_tof_range_rsp_ap_entry_ntfy_v7(9)
• struct iwl_tof_range_rsp_ap_entry_ntfy(9)
• enum iwl_tof_response_status(9)
• struct iwl_tof_range_rsp_ntfy_v5(9)
• struct iwl_tof_range_rsp_ntfy_v6(9)
• struct iwl_tof_range_rsp_ntfy_v7(9)
• struct iwl_tof_range_rsp_ntfy_v9(9)
• struct iwl_tof_range_rsp_ntfy(9)
• struct iwl_tof_mcsi_notif(9)
• struct iwl_tof_range_abort_cmd(9)
• struct iwl_ftm_responder_stats(9)

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bestie real talk: this page came from ./drivers/net/wireless/intel/i... with the date October 2026, and the header/footer both say struct iwl_...ntry_ntfy_v4(9). that's the whole source situation, mwah 💜

and that's the page!! you now know more about AP range response entries than like 99% of people. iconic. go take a nap, you earned it 🧚💖