STRUCT ATH_HW_RADAR_CONF(9)

💖 struct ath_hw_radar_conf(9) 💖

okay so bestie, welcome to the Kernel API Manual entry for struct ath_hw_radar_conf — yes it's a nine, yes it's a struct, yes it's the radar detection initialization parameters and yes we're gonna get through it together 🫶

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✨ NAME ✨

struct ath_hw_radar_conf — the radar detection initialization parameters. literally the little settings bundle that tells the hardware how to spot radar pulses. no cap.

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🌸 SYNOPSIS 🌸

struct ath_hw_radar_conf {
    unsigned int pulse_inband;
    unsigned int pulse_inband_step;
    unsigned int pulse_height;
    unsigned int pulse_rssi;
    unsigned int pulse_maxlen;
    unsigned int radar_rssi;
    unsigned int radar_inband;
    int fir_power;
    bool ext_channel;
 };

she's giving struct, she's giving fields, she's giving bool in the last slot 💅 (also yes, there's a little extra space before that closing brace in the original — I'm not touching it, character for character, periodt)

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🎀 Members 🎀

okay this is the main character section, every field gets its moment:

• pulse_inband — threshold for checking the ratio of in-band power to total power for short radar pulses, measured in half dB steps. iykyk, it's a ratio check and the units are half dB steps, don't forget the half 🙈
• pulse_inband_step — threshold for checking an in-band power to total power ratio increase for short radar pulses, also in half dB steps. note the glow-up: this one is about the ratio going up, not just the ratio itself ✨
• pulse_height — threshold for detecting the beginning of a short radar pulse, in dB step. this is the "oop, something's starting" field 👀
• pulse_rssi — threshold for detecting if a short radar pulse is gone, in dB step. the "okay she left" field 💀
• pulse_maxlen — maximum pulse length, in 0.8 us steps. yes, 0.8 us steps, that's the unit, keep it 💖
• radar_rssi — RSSI threshold for starting long radar detection, in dB steps. long-pulse era begins here 🔥
• radar_inband — threshold for checking the ratio of in-band power to total power for long radar pulses, in half dB steps. long pulses get their own ratio check, iconic 🌈
• fir_power — threshold for detecting the end of a long radar pulse, in dB. note: plain dB here, not dB steps, not half dB steps — different unit, don't mix them up bestie 🍓
• ext_channel — enable extension channel radar detection. it's a bool, it's on or off, she's simple and she's slaying 👑

⚠️ quick vibe check: the units are all over the place on purpose — half dB steps, dB step, dB steps, plain dB, and 0.8 us steps. copy them exactly, don't "normalize" them, that's not the move 😭

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🦋 SEE ALSO 🦋

• Kernel file ./drivers/net/wireless/ath/ath9k/hw.h struct
• ath_hw_private_ops(9)
• struct ath_spec_scan(9)
• struct ath_hw_ops(9)

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and that's the whole page, bestie, you ate that 💅

🌸✨ sign-off time ✨🌸 this lil gem lives over in ./drivers/net/wireless/ath/ath9k, dated October 2026, and the page itself is struct ath_hw_radar_conf(9). go forth and detect radar responsibly 🧚‍♀️💜