STRUCT ATH_RX_STATS(9)

💅 struct ath_rx_stats — RX Statistics 💅

okay so this is a page from the Kernel API Manual, and today's main character is struct ath_rx_stats — the receipt-keeping era of your wireless driver's receive path 🧾✨ she literally counts everything that comes in the door, the good, the bad, and the CRC-cursed. no cap.

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✨ SYNOPSIS ✨

bestie, here's the whole vibe, verbatim, do not touch:

struct ath_rx_stats {
    u32 rx_pkts_all;
    u32 rx_bytes_all;
    u32 crc_err;
    u32 decrypt_crc_err;
    u32 phy_err;
    u32 mic_err;
    u32 pre_delim_crc_err;
    u32 post_delim_crc_err;
    u32 decrypt_busy_err;
    u32 phy_err_stats[ATH9K_PHYERR_MAX];
    u32 rx_len_err;
    u32 rx_oom_err;
    u32 rx_rate_err;
    u32 rx_too_many_frags_err;
    u32 rx_beacons;
    u32 rx_frags;
    u32 rx_spectral;
    u32 rx_spectral_sample_good;
    u32 rx_spectral_sample_err;
};

like, nineteen-ish u32 counters and one very glamorous array. she's giving "spreadsheet but make it wifi" 📊💖

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🎀 Members 🎀

okay so each of these fields is a little counter bestie, let me walk you through them one at a time 🌸

• rx_pkts_all — No. of total frames received, including ones that may have had errors. she counts everybody, even the messy ones 🙈
• rx_bytes_all — No. of total bytes received, including ones that may have had errors. same energy, but in bytes 🔢
• crc_err — No. of frames with incorrect CRC value 💀 the checksum said no
• decrypt_crc_err — No. of frames whose CRC check failed after decryption process completed 🔐😭 the decryption finished and then the CRC was like "actually no"
• phy_err — No. of frames whose reception failed because the PHY encountered an error ⚡ the physical layer had a whole moment
• mic_err — No. of frames with incorrect TKIP MIC verification failure 🎤 (not that kind of mic, but honestly equally dramatic)
• pre_delim_crc_err — Pre-Frame delimiter CRC error detections 🚩 caught before the frame delimiter
• post_delim_crc_err — Post-Frame delimiter CRC error detections 🚩 caught after the frame delimiter
• decrypt_busy_err — Decryption interruptions counter ⏸️ the decryptor got interrupted, rude
• phy_err_stats — Individual PHY error statistics 📈 one stat per error type, sized ATH9K_PHYERR_MAX, very thorough of her
• rx_len_err — No. of frames discarded due to bad length. 📏 thrown out for being the wrong size
• rx_oom_err — No. of frames dropped due to OOM issues. 🫠 out of memory, out of luck
• rx_rate_err — No. of frames dropped due to rate errors. 💨 dropped over rate drama
• rx_too_many_frags_err — Frames dropped due to too-many-frags received. 🧩 just so many fragments, bestie
• rx_beacons — No. of beacons received. 🔦 lighthouse-core
• rx_frags — No. of rx-fragements received. 🧩 (yes, that's how the original spells "fragements" — we keep the facts, we keep the typo, we don't touch it, periodt 💅)
• rx_spectral — No of spectral packets received. 🌈 (also verbatim: "No of", no period, iconic)
• rx_spectral_sample_good — No. of good spectral samples ✨ the samples that ATE
• rx_spectral_sample_err — No. of good spectral samples 😭🫶 yes, the original says "good" here too — that's literally what's written, so that's literally what you get. no editing, no notes, we report exactly what the page says.

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🔍 SEE ALSO 🔍

if you wanna go read the source (and honestly, slay), check out this kernel file:

./drivers/net/wireless/ath/ath9k/common-debug.h

that's the one. go be nosy, iykyk 💜

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🦋 Sign-off 🦋

this little beauty lives over in ./drivers/net/wireless/ath/ath9k, and the page itself is dated October 2026 — so yeah, future-flavoured documentation, very forward-thinking of her 👑✨ go count some frames bestie, ily, bye 🫶💖