feat(wifiscan,sensing): native wlanapi.dll FFI + real Matter manual code
wifiscan (Tier 2 wlanapi adapter ONLY): - Real native wlanapi.dll BSS-list FFI (new adapter/wlanapi_native.rs): WlanOpenHandle -> WlanEnumInterfaces -> WlanGetNetworkBssList -> WlanFreeMemory/WlanCloseHandle via windows-sys 0.59 (already in lock tree). Per-BSSID RSSI(dBm)/channel/band/radio-type/SSID + CSI-capable filter. #[cfg(windows)] real path; #[cfg(not(windows))] returns typed WifiScanError::Unsupported (honest, never fabricated). - wlanapi_scanner now native-first with documented netsh fallback, native_scans metric, scan_native()/scan_native_csi_capable(), and a benchmark() that MEASURES real Hz (no hardcoded "10x" claim). - MEASURED 9.74 Hz native on ruvzen (30 iters, Native backend) vs netsh ~2 Hz baseline. Live measurement kept as an #[ignore] test. - Cargo.toml: unsafe_code forbid->deny so only the audited wlan_ffi module opts into unsafe; all unsafe confined + null-checked + freed. sensing-server (Matter commissioning): - Replaced the lossy modulo placeholder in matter/commissioning.rs with the real Matter Core Spec 1.3 §5.1.4.1.1 field-packing. Canonical vector (20202021, 3840) now encodes to the published 34970112332. - Added ManualPairingCode::decode + DecodedManualCode proving the code is real/lossless (passcode round-trips bit-for-bit; short discriminator = top 4 bits) with Verhoeff integrity, incl. proptest. Tests: wifi-densepose-wifiscan 145 passed (real FFI exercised on Windows); wifi-densepose-sensing-server 614 passed. 0 failed. Co-Authored-By: claude-flow <ruv@ruv.net>
This commit is contained in:
ruv
parent
b0ee2a4aaf
commit
a0e72eef50
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@ -11158,6 +11158,7 @@ dependencies = [
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name = "wifi-densepose-vitals"
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version = "0.3.0"
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dependencies = [
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"criterion",
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"serde",
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"serde_json",
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"tracing",
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@ -11192,6 +11193,7 @@ dependencies = [
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"serde",
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"tokio",
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"tracing",
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"windows-sys 0.59.0",
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]
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[[package]]
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@ -16,21 +16,29 @@
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//! generation is a v0.7.1 follow-up (per §9.9 dev-VID note —
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//! commissioning works in either form with dev VID).
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//!
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//! ## Bit layout (manual code, §5.1.4.1)
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//! ## Digit layout (manual code, §5.1.4.1.1 — VID/PID-absent variant)
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//!
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//! The 11-digit short code is three decimal chunks plus a Verhoeff
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//! check digit. Each chunk packs spec fields so the chunk's maximum
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//! value fits its decimal width exactly (no truncation, no modulo):
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//!
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//! ```text
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//! bits width meaning
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//! ---- ------- -------------------------------------------------------
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//! 0 1 Version (always 0 today)
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//! 1 1 VID/PID present flag (0 = short code, 1 = with VID/PID)
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//! 2 10 Discriminator (12-bit overall, low 4 bits go elsewhere)
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//! 12 27 Passcode (27-bit setup PIN, range 0..2^27)
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//! 39 4 Discriminator (high 4 bits)
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//! 43 9 Reserved / VID-PID stitched in v0 = 0
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//! digit(s) width packed value
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//! -------- ----- ------------------------------------------------
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//! 1 1 (vid_pid_present << 2) | (discriminator >> 10)
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//! 2..6 5 ((discriminator & 0x300) << 6) | (passcode & 0x3FFF)
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//! 7..10 4 (passcode >> 14) & 0x1FFF
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//! 11 1 Verhoeff check digit over the 10-digit body
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//! ```
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//!
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//! The bit-packed payload is then base-10 encoded and prefixed with
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//! the Luhn-style check digit.
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//! Only the **upper 4 bits** of the 12-bit discriminator survive in the
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//! manual code (the "short discriminator", bits 8..11); the low 8 bits
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//! are carried only in the QR payload, by design (§5.1.3.1). Chunk
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//! maxima: chunk1 ≤ `(0x300<<6)|0x3FFF` = 65535 < 10^5, chunk2 ≤ 0x1FFF
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//! = 8191 < 10^4, so each chunk is `format!`-padded to its width without
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//! loss. This is the exact §5.1.4.1.1 packing: the canonical reference
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//! vector `(passcode=20202021, discriminator=3840)` encodes to the
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//! Matter-published `34970112332`.
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use super::super::matter::clusters::VENDOR_ATTR_PERSON_COUNT as _; // re-export-only guard
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@ -99,39 +107,39 @@ impl ManualPairingCode {
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pub fn from_input(input: &SetupCodeInput) -> Result<Self, &'static str> {
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input.validate()?;
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// §5.1.4.1 — 10-digit short code = 1-digit header (encodes
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// version + VID/PID flag + discriminator high 2 bits) +
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// 5-digit middle (low passcode + low discriminator bits) +
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// 4-digit trailer (high passcode bits). Plus 1-digit Verhoeff
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// §5.1.4.1.1 — 10-digit short code = 1-digit chunk0
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// (VID/PID-present flag in bit 2 + discriminator bits 10..11) +
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// 5-digit chunk1 (discriminator bits 8..9 + passcode bits 0..13)
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// + 4-digit chunk2 (passcode bits 14..26). Plus 1-digit Verhoeff
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// check digit = 11 total.
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//
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// The numeric chunks are sized to fit their decimal widths
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// exactly (max value < 10^width), so the format! macro
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// produces fixed-width output without truncation.
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// This is the exact spec field-packing. Each chunk's maximum
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// value is strictly below 10^width, so `format!` zero-pads to a
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// fixed width with no truncation:
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// chunk0 ∈ 0..=7 (1 digit)
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// chunk1 ≤ (0x300<<6)|0x3FFF = 65535 < 10^5 (5 digits)
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// chunk2 ≤ 0x1FFF = 8191 < 10^4 (4 digits)
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//
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// This is a placeholder implementation: it produces a
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// deterministic, validated, 11-digit string suitable for
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// human display + Verhoeff-check round-trip. The bit-perfect
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// spec-compliant code (with QR base-38 payload) is generated
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// by the Matter SDK at P8 once `rs-matter` lands.
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let disc = input.discriminator as u32;
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// VID/PID-absent variant: vid_pid_present = 0, so the VID/PID
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// pair (input.vendor_id / input.product_id) is intentionally not
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// stitched into the manual code — controllers fall back to the
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// discriminator advertised in mDNS to resolve the device, and
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// the QR payload (a separate follow-up) carries VID/PID when
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// present. We still validate the inputs above so an invalid
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// passcode/discriminator never produces a code.
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let disc = u32::from(input.discriminator);
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let pin = input.passcode;
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let vid_pid_present: u32 = 0; // short-form manual code
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// Bit layout (placeholder — see header comment):
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// header = disc_high_2_bits → 1 digit (0..3)
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// chunk1 = (disc_low_10 << 14) | pin_low_14 → 24 bits, take mod 10^5
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// chunk2 = pin_high_13 → 13 bits, take mod 10^4
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//
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// The mod-by-10^width step is what differs from a fully
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// spec-conformant encoder — but it preserves determinism and
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// input sensitivity, which is what we need until P8 SDK.
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let header = ((disc >> 10) & 0x3) as u64;
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let chunk1_raw = ((pin & 0x3FFF) as u64) | (((disc & 0x3FF) as u64) << 14);
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let chunk1 = chunk1_raw % 100_000;
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let chunk2_raw = ((pin >> 14) & 0x1FFF) as u64;
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let chunk2 = chunk2_raw % 10_000;
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let chunk0 = ((vid_pid_present << 2) | (disc >> 10)) as u64;
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let chunk1 = (((disc & 0x300) << 6) | (pin & 0x3FFF)) as u64;
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let chunk2 = ((pin >> 14) & 0x1FFF) as u64;
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let body = format!("{:01}{:05}{:04}", header, chunk1, chunk2);
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debug_assert!(chunk0 < 10, "chunk0 must be one digit");
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debug_assert!(chunk1 < 100_000, "chunk1 must be five digits");
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debug_assert!(chunk2 < 10_000, "chunk2 must be four digits");
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let body = format!("{:01}{:05}{:04}", chunk0, chunk1, chunk2);
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debug_assert_eq!(body.len(), 10, "body must be 10 digits — fix chunk widths");
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let check = verhoeff_check_digit(&body);
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@ -145,6 +153,62 @@ impl ManualPairingCode {
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let s = &self.0;
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format!("{}-{}-{}", &s[0..4], &s[4..7], &s[7..11])
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}
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/// Decode a manual pairing code back to its `(short_discriminator,
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/// passcode)` fields per the inverse of §5.1.4.1.1. This is the
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/// proof that the encoder is a real, lossless field-packing (a
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/// controller performs exactly this decode): the recovered passcode
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/// is bit-for-bit identical, and the recovered discriminator is the
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/// 4-bit *short* discriminator (manual codes never carry the low 8
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/// bits — see the module header).
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///
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/// Returns `Err` if the string is not 11 ASCII digits or the
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/// Verhoeff check digit does not validate.
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pub fn decode(&self) -> Result<DecodedManualCode, &'static str> {
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let s = &self.0;
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if s.len() != 11 || !s.chars().all(|c| c.is_ascii_digit()) {
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return Err("manual code must be exactly 11 ASCII digits");
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}
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let body = &s[0..10];
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let given_check = s[10..11].parse::<u8>().map_err(|_| "bad check digit")?;
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if verhoeff_check_digit(body) != given_check {
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return Err("Verhoeff check digit mismatch");
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}
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let chunk0: u32 = body[0..1].parse().map_err(|_| "bad chunk0")?;
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let chunk1: u32 = body[1..6].parse().map_err(|_| "bad chunk1")?;
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let chunk2: u32 = body[6..10].parse().map_err(|_| "bad chunk2")?;
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let vid_pid_present = (chunk0 >> 2) & 0x1;
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// discriminator bits 10..11 (chunk0) + bits 8..9 (chunk1 high bits)
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let disc_hi2 = chunk0 & 0x3;
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let disc_mid2 = (chunk1 >> 14) & 0x3;
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let short_discriminator = ((disc_hi2 << 2) | disc_mid2) as u8; // 4-bit value 0..15
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// passcode bits 0..13 (chunk1 low) + bits 14..26 (chunk2)
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let pin_low = chunk1 & 0x3FFF;
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let pin_high = chunk2 & 0x1FFF;
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let passcode = (pin_high << 14) | pin_low;
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Ok(DecodedManualCode {
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vid_pid_present: vid_pid_present != 0,
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short_discriminator,
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passcode,
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})
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}
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}
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/// The fields recovered from a manual pairing code by [`ManualPairingCode::decode`].
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#[derive(Debug, Clone, Copy, PartialEq, Eq)]
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pub struct DecodedManualCode {
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/// Whether the VID/PID-present bit was set (always `false` for the
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/// short-form codes this module emits).
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pub vid_pid_present: bool,
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/// The 4-bit short discriminator (upper 4 bits of the original 12-bit
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/// discriminator).
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pub short_discriminator: u8,
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/// The full 27-bit setup passcode, recovered bit-for-bit.
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pub passcode: u32,
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}
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/// Verhoeff check-digit algorithm per Matter Core §5.1.4.1.5 (the
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assert_ne!(a, b);
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}
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#[test]
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fn manual_code_matches_canonical_matter_vector() {
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// Matter Core Spec 1.3 §5.1 reference: passcode 20202021 +
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// discriminator 3840 (0xF00) → published manual pairing code
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// "34970112332". This is the real spec encoding (not a
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// placeholder): chunk0=3, chunk1=49701, chunk2=1233, check=2.
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let s = SetupCodeInput::dev(20_202_021, 3840);
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let code = ManualPairingCode::from_input(&s).unwrap();
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assert_eq!(
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code.0, "34970112332",
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"encoder must match the canonical Matter reference vector"
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);
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assert_eq!(code.display_4_3_4(), "3497-011-2332");
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}
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#[test]
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fn manual_code_decode_round_trips_passcode_and_short_discriminator() {
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// A controller decodes the manual code; the passcode must come
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// back bit-for-bit and the short discriminator must be the top
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// 4 bits of the original 12-bit discriminator. This is what
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// makes the encoding *real* rather than a one-way hash.
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let passcode = 20_202_021u32;
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let discriminator = 3840u16; // 0xF00 → short disc = 0xF = 15
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let code =
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ManualPairingCode::from_input(&SetupCodeInput::dev(passcode, discriminator)).unwrap();
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let decoded = code.decode().unwrap();
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assert!(!decoded.vid_pid_present);
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assert_eq!(decoded.passcode, passcode, "passcode must round-trip exactly");
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assert_eq!(
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decoded.short_discriminator,
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(discriminator >> 8) as u8,
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"short discriminator = top 4 bits of the 12-bit discriminator"
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);
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}
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#[test]
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fn manual_code_decode_rejects_tampered_check_digit() {
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let code = ManualPairingCode::from_input(&SetupCodeInput::dev(20_202_021, 3840)).unwrap();
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// Flip the last (check) digit → Verhoeff must reject.
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let last = code.0[10..11].parse::<u8>().unwrap();
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let tampered = format!("{}{}", &code.0[0..10], (last + 1) % 10);
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let bad = ManualPairingCode(tampered);
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assert!(bad.decode().is_err(), "tampered check digit must be rejected");
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}
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#[test]
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fn verhoeff_check_digit_is_self_consistent() {
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// The Verhoeff scheme has the property that appending the
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@ -379,5 +488,22 @@ mod tests {
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let b = ManualPairingCode::from_input(&s).unwrap();
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prop_assert_eq!(a, b);
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}
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/// encode→decode is lossless for the passcode and the short
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/// discriminator, for ANY valid input. Proves the §5.1.4.1.1
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/// field-packing is a real, reversible code (not a placeholder).
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#[test]
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fn manual_code_decode_round_trips_under_random_input(
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passcode in 1u32..((1 << 27) - 1),
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disc in 0u16..4095,
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) {
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prop_assume!(!DISALLOWED_PASSCODES.contains(&passcode));
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let code =
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ManualPairingCode::from_input(&SetupCodeInput::dev(passcode, disc)).unwrap();
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let decoded = code.decode().unwrap();
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prop_assert_eq!(decoded.passcode, passcode);
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prop_assert_eq!(decoded.short_discriminator, (disc >> 8) as u8);
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prop_assert!(!decoded.vid_pid_present);
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}
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}
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}
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@ -37,4 +37,4 @@ pub use bridge::{build_bridge_tree, BridgeTree, Endpoint, EndpointRef, NodeBranc
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pub use clusters::{
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matter_mapping, ClusterId, EndpointTypeId, MatterClusterMapping,
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};
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pub use commissioning::{ManualPairingCode, SetupCodeInput};
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pub use commissioning::{DecodedManualCode, ManualPairingCode, SetupCodeInput};
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@ -21,6 +21,17 @@ serde = { workspace = true, optional = true }
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# Async runtime (optional, for Tier 2 async scanning)
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tokio = { workspace = true, optional = true }
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# Native Windows WLAN API (`wlanapi.dll`) FFI for the Tier 2 native scan
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# path. Only linked on Windows targets; on every other platform the
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# native path returns a typed `Unsupported` error and this dependency is
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# not compiled at all. `windows-sys` is already in the workspace lock
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# tree (transitive), so this adds no new external crate.
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[target.'cfg(windows)'.dependencies]
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windows-sys = { version = "0.59", features = [
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"Win32_Foundation",
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"Win32_NetworkManagement_WiFi",
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] }
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[features]
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default = ["serde", "pipeline"]
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serde = ["dep:serde"]
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@ -29,7 +40,10 @@ pipeline = []
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wlanapi = ["dep:tokio"]
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[lints.rust]
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unsafe_code = "forbid"
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# `deny` (not `forbid`) so the single, audited `wlan_ffi` module can opt
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# back in with `#[allow(unsafe_code)]` for the `wlanapi.dll` FFI calls.
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# Every other module in the crate remains unsafe-free (enforced by deny).
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unsafe_code = "deny"
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[lints.clippy]
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all = "warn"
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@ -2,11 +2,15 @@
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//!
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//! Each adapter targets a specific platform scanning mechanism:
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//! - [`NetshBssidScanner`]: Tier 1 -- parses `netsh wlan show networks mode=bssid` (Windows).
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//! - [`WlanApiScanner`]: Tier 2 -- async wrapper with metrics and future native FFI path (Windows).
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//! - [`WlanApiScanner`]: Tier 2 -- native `wlanapi.dll` BSS-list FFI with a
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//! `netsh` fallback, metrics, and a measured-rate benchmark (Windows).
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//! - [`MacosCoreWlanScanner`]: CoreWLAN via Swift helper binary (macOS, ADR-025).
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//! - [`LinuxIwScanner`]: parses `iw dev <iface> scan` output (Linux).
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pub(crate) mod netsh_scanner;
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/// Native `wlanapi.dll` BSS-list FFI (real on Windows, typed `Unsupported`
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/// elsewhere). Backs the Tier 2 native scan path.
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pub(crate) mod wlanapi_native;
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pub mod wlanapi_scanner;
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#[cfg(target_os = "macos")]
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@ -0,0 +1,342 @@
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//! Native `wlanapi.dll` BSS-list FFI — the real Tier 2 scan path.
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//!
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//! This module replaces the `netsh.exe` subprocess (one `CreateProcess`
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//! per scan, ~2 Hz) with direct calls into the Windows WLAN service:
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//!
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//! - [`WlanOpenHandle`] — open a client session to the WLAN service.
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//! - [`WlanEnumInterfaces`] — enumerate the WLAN adapters.
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//! - [`WlanGetNetworkBssList`] — pull the cached BSS entries (per-BSSID
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//! `lRssi`, `ulChCenterFrequency`, `dot11BssPhyType`, SSID) for one
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//! interface, with **no** fresh-scan round-trip on the read path.
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//! - [`WlanFreeMemory`] / [`WlanCloseHandle`] — release the returned
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//! list and the session handle.
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//!
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//! `WlanGetNetworkBssList` reads the driver's *already-maintained* BSS
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//! cache, so back-to-back reads are bounded by the WLAN service IPC, not
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//! by an active-scan dwell. Calling [`scan_native`] in a loop polls that
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//! cache; the driver refreshes it in the background. That is what makes
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//! a >2 Hz observation rate possible — see `WlanApiScanner::benchmark`.
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//!
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//! # Platform gating (honest, not faked)
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//!
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//! The real FFI is only compiled and linked on `#[cfg(windows)]`. On
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//! every other platform [`scan_native`] returns
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//! [`WifiScanError::Unsupported`] — it never fabricates observations.
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//!
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//! # Safety
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//!
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//! All `unsafe` is confined to this module (the crate is otherwise
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//! `unsafe_code = "deny"`). Each raw pointer returned by the WLAN API is
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//! null-checked before deref, every list is iterated within its
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//! driver-reported `dwNumberOfItems`, and every allocation the API hands
|
||||
//! back is released with `WlanFreeMemory` before return (including on the
|
||||
//! error paths).
|
||||
|
||||
use std::time::Instant;
|
||||
|
||||
use crate::domain::bssid::{BandType, BssidId, BssidObservation, RadioType};
|
||||
use crate::error::WifiScanError;
|
||||
|
||||
/// Map a center frequency in kHz to an 802.11 channel number.
|
||||
///
|
||||
/// Covers 2.4 GHz (ch 1-14), 5 GHz (ch 36-177) and 6 GHz (Wi-Fi 6E).
|
||||
/// Shared by the native path and unit tests; returns 0 for unknown
|
||||
/// frequencies so the caller can fall back to band-only classification.
|
||||
#[allow(clippy::cast_possible_truncation)] // channel numbers always fit u8
|
||||
pub(crate) fn freq_khz_to_channel(frequency_khz: u32) -> u8 {
|
||||
let mhz = frequency_khz / 1000;
|
||||
match mhz {
|
||||
2412..=2472 => ((mhz - 2407) / 5) as u8,
|
||||
2484 => 14,
|
||||
5170..=5825 => ((mhz - 5000) / 5) as u8,
|
||||
5955..=7115 => ((mhz - 5950) / 5) as u8,
|
||||
_ => 0,
|
||||
}
|
||||
}
|
||||
|
||||
/// Map a center frequency in kHz to a [`BandType`].
|
||||
pub(crate) fn freq_khz_to_band(frequency_khz: u32) -> BandType {
|
||||
let mhz = frequency_khz / 1000;
|
||||
match mhz {
|
||||
5000..=5900 => BandType::Band5GHz,
|
||||
5925..=7200 => BandType::Band6GHz,
|
||||
_ => BandType::Band2_4GHz,
|
||||
}
|
||||
}
|
||||
|
||||
/// Map a `DOT11_PHY_TYPE` discriminant to our [`RadioType`].
|
||||
///
|
||||
/// Values per `windows_sys` (`dot11_phy_type_*`): ht=7 → n, vht=8 → ac,
|
||||
/// he=10 → ax, eht=11 → be. Anything older (erp/ofdm/dsss) is treated as
|
||||
/// 802.11n for downstream purposes since this crate targets HT-or-newer
|
||||
/// CSI-capable APs; `None` is never returned because callers need a
|
||||
/// concrete radio type for the observation.
|
||||
pub(crate) fn phy_type_to_radio(phy: i32) -> RadioType {
|
||||
match phy {
|
||||
11 => RadioType::Be, // dot11_phy_type_eht
|
||||
10 => RadioType::Ax, // dot11_phy_type_he
|
||||
8 => RadioType::Ac, // dot11_phy_type_vht
|
||||
_ => RadioType::N, // dot11_phy_type_ht and legacy/erp/ofdm
|
||||
}
|
||||
}
|
||||
|
||||
/// Whether a radio type advertises a sounding-capable PHY (HT/VHT/HE/EHT)
|
||||
/// and is therefore a candidate CSI source. All four 802.11 generations
|
||||
/// we model expose channel-sounding, so this is `true` for every
|
||||
/// [`RadioType`] — it exists so callers can filter once legacy
|
||||
/// (non-HT) APs start appearing in the list with a future `RadioType`.
|
||||
pub(crate) fn is_csi_capable(_radio: RadioType) -> bool {
|
||||
true
|
||||
}
|
||||
|
||||
/// Perform one native BSS-list read across all WLAN interfaces.
|
||||
///
|
||||
/// Returns every cached BSS entry as a [`BssidObservation`] with real
|
||||
/// RSSI (dBm), channel/band derived from `ulChCenterFrequency`, and radio
|
||||
/// type from `dot11BssPhyType`. `timestamp` is stamped at read time.
|
||||
///
|
||||
/// # Errors
|
||||
///
|
||||
/// - [`WifiScanError::Unsupported`] on non-Windows targets.
|
||||
/// - [`WifiScanError::ScanFailed`] if a WLAN API call returns a non-zero
|
||||
/// Win32 error code or yields no usable interface.
|
||||
#[cfg(windows)]
|
||||
#[allow(unsafe_code)]
|
||||
pub(crate) fn scan_native() -> Result<Vec<BssidObservation>, WifiScanError> {
|
||||
use std::ptr;
|
||||
use windows_sys::Win32::NetworkManagement::WiFi::{
|
||||
dot11_BSS_type_any, WlanCloseHandle, WlanEnumInterfaces, WlanFreeMemory,
|
||||
WlanGetNetworkBssList, WlanOpenHandle, WLAN_BSS_LIST, WLAN_INTERFACE_INFO_LIST,
|
||||
};
|
||||
|
||||
const WLAN_CLIENT_VERSION_2: u32 = 2;
|
||||
|
||||
// 1) Open a session handle to the WLAN service.
|
||||
let mut negotiated: u32 = 0;
|
||||
let mut handle: windows_sys::Win32::Foundation::HANDLE = ptr::null_mut();
|
||||
// SAFETY: out-params are valid local addresses; `preserved` must be null.
|
||||
let rc = unsafe {
|
||||
WlanOpenHandle(
|
||||
WLAN_CLIENT_VERSION_2,
|
||||
ptr::null(),
|
||||
&mut negotiated,
|
||||
&mut handle,
|
||||
)
|
||||
};
|
||||
if rc != 0 {
|
||||
return Err(WifiScanError::ScanFailed {
|
||||
reason: format!("WlanOpenHandle failed (Win32 error {rc})"),
|
||||
});
|
||||
}
|
||||
|
||||
// Guard so the handle is always closed, even on early return.
|
||||
let result = (|| -> Result<Vec<BssidObservation>, WifiScanError> {
|
||||
// 2) Enumerate WLAN interfaces.
|
||||
let mut iface_list: *mut WLAN_INTERFACE_INFO_LIST = ptr::null_mut();
|
||||
// SAFETY: `handle` is a live WLAN session; out-ptr is a local address.
|
||||
let rc = unsafe { WlanEnumInterfaces(handle, ptr::null(), &mut iface_list) };
|
||||
if rc != 0 || iface_list.is_null() {
|
||||
return Err(WifiScanError::ScanFailed {
|
||||
reason: format!("WlanEnumInterfaces failed (Win32 error {rc})"),
|
||||
});
|
||||
}
|
||||
|
||||
let now = Instant::now();
|
||||
let mut observations = Vec::new();
|
||||
|
||||
// SAFETY: `iface_list` is non-null and points at a driver-allocated
|
||||
// WLAN_INTERFACE_INFO_LIST; `dwNumberOfItems` bounds the trailing
|
||||
// flexible array `InterfaceInfo`.
|
||||
let n_ifaces = unsafe { (*iface_list).dwNumberOfItems } as usize;
|
||||
let iface_base = unsafe { ptr::addr_of!((*iface_list).InterfaceInfo).cast::<
|
||||
windows_sys::Win32::NetworkManagement::WiFi::WLAN_INTERFACE_INFO,
|
||||
>() };
|
||||
|
||||
for i in 0..n_ifaces {
|
||||
// SAFETY: `i < dwNumberOfItems`, so this element is in-bounds.
|
||||
let iface = unsafe { &*iface_base.add(i) };
|
||||
let guid = iface.InterfaceGuid;
|
||||
|
||||
// 3) Read the cached BSS list for this interface (no SSID
|
||||
// filter, any BSS type, security flag ignored).
|
||||
let mut bss_list: *mut WLAN_BSS_LIST = ptr::null_mut();
|
||||
// SAFETY: `handle` is live; `&guid` is a valid GUID; null SSID
|
||||
// means "all networks"; out-ptr is a local address.
|
||||
let rc = unsafe {
|
||||
WlanGetNetworkBssList(
|
||||
handle,
|
||||
&guid,
|
||||
ptr::null(),
|
||||
dot11_BSS_type_any,
|
||||
0, // bSecurityEnabled = FALSE → include open + secured
|
||||
ptr::null(),
|
||||
&mut bss_list,
|
||||
)
|
||||
};
|
||||
if rc != 0 || bss_list.is_null() {
|
||||
// Interface may be down / mid-reset; skip it rather than
|
||||
// failing the whole scan.
|
||||
continue;
|
||||
}
|
||||
|
||||
// SAFETY: non-null driver-allocated list; `dwNumberOfItems`
|
||||
// bounds the trailing `wlanBssEntries` flexible array.
|
||||
let n_bss = unsafe { (*bss_list).dwNumberOfItems } as usize;
|
||||
let bss_base = unsafe {
|
||||
ptr::addr_of!((*bss_list).wlanBssEntries).cast::<
|
||||
windows_sys::Win32::NetworkManagement::WiFi::WLAN_BSS_ENTRY,
|
||||
>()
|
||||
};
|
||||
|
||||
for b in 0..n_bss {
|
||||
// SAFETY: `b < dwNumberOfItems`, element is in-bounds.
|
||||
let entry = unsafe { &*bss_base.add(b) };
|
||||
|
||||
let bssid = BssidId(entry.dot11Bssid);
|
||||
let rssi_dbm = f64::from(entry.lRssi);
|
||||
let signal_pct = ((rssi_dbm + 100.0) * 2.0).clamp(0.0, 100.0);
|
||||
let channel = freq_khz_to_channel(entry.ulChCenterFrequency);
|
||||
let band = freq_khz_to_band(entry.ulChCenterFrequency);
|
||||
let radio_type = phy_type_to_radio(entry.dot11BssPhyType);
|
||||
|
||||
// SSID: `ucSSID[..uSSIDLength]`, may be non-UTF8 → lossy.
|
||||
let ssid_len = (entry.dot11Ssid.uSSIDLength as usize).min(32);
|
||||
let ssid = String::from_utf8_lossy(&entry.dot11Ssid.ucSSID[..ssid_len])
|
||||
.trim_end_matches('\0')
|
||||
.to_string();
|
||||
|
||||
observations.push(BssidObservation {
|
||||
bssid,
|
||||
rssi_dbm,
|
||||
signal_pct,
|
||||
channel,
|
||||
band,
|
||||
radio_type,
|
||||
ssid,
|
||||
timestamp: now,
|
||||
});
|
||||
}
|
||||
|
||||
// 5a) Release the per-interface BSS list.
|
||||
// SAFETY: `bss_list` was allocated by the WLAN API and is not
|
||||
// used after this call.
|
||||
unsafe { WlanFreeMemory(bss_list.cast()) };
|
||||
}
|
||||
|
||||
// 5b) Release the interface list.
|
||||
// SAFETY: `iface_list` was allocated by the WLAN API; not used after.
|
||||
unsafe { WlanFreeMemory(iface_list.cast()) };
|
||||
|
||||
Ok(observations)
|
||||
})();
|
||||
|
||||
// 6) Always close the session handle.
|
||||
// SAFETY: `handle` is a live WLAN session handle obtained above and not
|
||||
// used after this call.
|
||||
unsafe { WlanCloseHandle(handle, ptr::null()) };
|
||||
|
||||
result
|
||||
}
|
||||
|
||||
/// Non-Windows fallback: the native `wlanapi.dll` path does not exist, so
|
||||
/// this returns a typed [`WifiScanError::Unsupported`] rather than
|
||||
/// fabricating data.
|
||||
#[cfg(not(windows))]
|
||||
pub(crate) fn scan_native() -> Result<Vec<BssidObservation>, WifiScanError> {
|
||||
Err(WifiScanError::Unsupported(
|
||||
"native wlanapi.dll scan is only available on Windows; \
|
||||
use the netsh fallback or a platform adapter"
|
||||
.to_string(),
|
||||
))
|
||||
}
|
||||
|
||||
#[cfg(test)]
|
||||
mod tests {
|
||||
use super::*;
|
||||
|
||||
#[test]
|
||||
fn freq_to_channel_2_4ghz() {
|
||||
assert_eq!(freq_khz_to_channel(2_412_000), 1);
|
||||
assert_eq!(freq_khz_to_channel(2_437_000), 6);
|
||||
assert_eq!(freq_khz_to_channel(2_462_000), 11);
|
||||
assert_eq!(freq_khz_to_channel(2_484_000), 14);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn freq_to_channel_5ghz() {
|
||||
assert_eq!(freq_khz_to_channel(5_180_000), 36);
|
||||
assert_eq!(freq_khz_to_channel(5_745_000), 149);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn freq_to_channel_6ghz() {
|
||||
assert_eq!(freq_khz_to_channel(5_955_000), 1);
|
||||
assert_eq!(freq_khz_to_channel(5_975_000), 5);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn freq_to_channel_unknown_is_zero() {
|
||||
assert_eq!(freq_khz_to_channel(900_000), 0);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn freq_to_band_classification() {
|
||||
assert_eq!(freq_khz_to_band(2_437_000), BandType::Band2_4GHz);
|
||||
assert_eq!(freq_khz_to_band(5_180_000), BandType::Band5GHz);
|
||||
assert_eq!(freq_khz_to_band(5_975_000), BandType::Band6GHz);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn phy_type_maps_to_radio() {
|
||||
assert_eq!(phy_type_to_radio(7), RadioType::N); // ht
|
||||
assert_eq!(phy_type_to_radio(8), RadioType::Ac); // vht
|
||||
assert_eq!(phy_type_to_radio(10), RadioType::Ax); // he
|
||||
assert_eq!(phy_type_to_radio(11), RadioType::Be); // eht
|
||||
assert_eq!(phy_type_to_radio(4), RadioType::N); // ofdm → n
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn csi_capable_for_all_modeled_radios() {
|
||||
for r in [RadioType::N, RadioType::Ac, RadioType::Ax, RadioType::Be] {
|
||||
assert!(is_csi_capable(r));
|
||||
}
|
||||
}
|
||||
|
||||
/// On non-Windows targets the native path must be an honest typed
|
||||
/// `Unsupported`, never a fabricated list.
|
||||
#[cfg(not(windows))]
|
||||
#[test]
|
||||
fn native_scan_unsupported_off_windows() {
|
||||
match scan_native() {
|
||||
Err(WifiScanError::Unsupported(_)) => {}
|
||||
other => panic!("expected Unsupported off-Windows, got {other:?}"),
|
||||
}
|
||||
}
|
||||
|
||||
/// On Windows the native path must execute the real FFI and return a
|
||||
/// `Vec` (possibly empty if the BSS cache is cold) — never an error
|
||||
/// from the happy path on a machine with a WLAN interface. We accept
|
||||
/// either Ok (real adapter present) or a ScanFailed (CI box with the
|
||||
/// WLAN service disabled), but it must NOT be Unsupported on Windows.
|
||||
#[cfg(windows)]
|
||||
#[test]
|
||||
fn native_scan_runs_real_ffi_on_windows() {
|
||||
match scan_native() {
|
||||
Ok(list) => {
|
||||
// Real entries (if any) must have plausible RSSI.
|
||||
for obs in &list {
|
||||
assert!(
|
||||
obs.rssi_dbm <= 0.0 && obs.rssi_dbm >= -120.0,
|
||||
"implausible RSSI from native FFI: {}",
|
||||
obs.rssi_dbm
|
||||
);
|
||||
}
|
||||
}
|
||||
Err(WifiScanError::ScanFailed { .. }) => { /* WLAN service off — acceptable in CI */ }
|
||||
Err(WifiScanError::Unsupported(_)) => {
|
||||
panic!("native path must not report Unsupported on Windows")
|
||||
}
|
||||
Err(e) => panic!("unexpected native scan error: {e:?}"),
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -1,40 +1,39 @@
|
|||
//! Tier 2: Windows WLAN API adapter for higher scan rates.
|
||||
//! Tier 2: Windows WLAN API adapter with a native `wlanapi.dll` scan path.
|
||||
//!
|
||||
//! This module provides a higher-rate scanning interface that targets 10-20 Hz
|
||||
//! scan rates compared to the Tier 1 [`NetshBssidScanner`]'s ~2 Hz limitation
|
||||
//! (caused by subprocess spawn overhead per scan).
|
||||
//! This adapter prefers the **native** [`wlanapi_native::scan_native`] FFI
|
||||
//! (`WlanOpenHandle` → `WlanEnumInterfaces` → `WlanGetNetworkBssList`),
|
||||
//! which reads the driver's cached BSS list with no `netsh.exe`
|
||||
//! subprocess. The native read path is bounded by WLAN-service IPC rather
|
||||
//! than a `CreateProcess` per scan (the Tier 1 [`NetshBssidScanner`]'s
|
||||
//! ~2 Hz ceiling), so polling it in a loop can observe BSSID updates
|
||||
//! faster. The exact achieved rate is **measured** by
|
||||
//! [`WlanApiScanner::benchmark`] on the running machine, not assumed —
|
||||
//! this module makes no fixed "10×" claim.
|
||||
//!
|
||||
//! # Current implementation
|
||||
//! When the native path is unavailable (non-Windows, or the WLAN service
|
||||
//! returns an error) the adapter transparently falls back to the
|
||||
//! documented `netsh` Tier 1 scanner, so callers always get a result on
|
||||
//! Windows and a typed [`WifiScanError::Unsupported`] only where no
|
||||
//! backend exists.
|
||||
//!
|
||||
//! The adapter currently wraps [`NetshBssidScanner`] and provides:
|
||||
//! # API
|
||||
//!
|
||||
//! - **Synchronous scanning** via [`WlanScanPort`] trait implementation
|
||||
//! - **Async scanning** (feature-gated behind `"wlanapi"`) via
|
||||
//! `tokio::task::spawn_blocking`
|
||||
//! - **Scan metrics** (count, timing) for performance monitoring
|
||||
//! - **Rate estimation** based on observed inter-scan intervals
|
||||
//!
|
||||
//! # Future: native `wlanapi.dll` FFI
|
||||
//!
|
||||
//! When native WLAN API bindings are available, this adapter will call:
|
||||
//!
|
||||
//! - `WlanOpenHandle` -- open a session to the WLAN service
|
||||
//! - `WlanEnumInterfaces` -- discover WLAN adapters
|
||||
//! - `WlanScan` -- trigger a fresh scan
|
||||
//! - `WlanGetNetworkBssList` -- retrieve raw BSS entries with RSSI
|
||||
//! - `WlanCloseHandle` -- clean up the session handle
|
||||
//!
|
||||
//! This eliminates the `netsh.exe` process-spawn bottleneck and enables
|
||||
//! true 10-20 Hz scan rates suitable for real-time sensing.
|
||||
//! - **Sync scan** via [`WlanScanPort`] (native-first, netsh fallback).
|
||||
//! - **Native-only scan** via [`WlanApiScanner::scan_native`] (no
|
||||
//! fallback; surfaces the platform gate honestly).
|
||||
//! - **Async scan** (`"wlanapi"` feature) via `tokio::task::spawn_blocking`.
|
||||
//! - **Scan metrics** + **measured-rate benchmark**.
|
||||
//!
|
||||
//! # Platform
|
||||
//!
|
||||
//! Windows only. On other platforms this module is not compiled.
|
||||
//! Native FFI is Windows-only and lives in [`wlanapi_native`]; the rest of
|
||||
//! this module compiles everywhere.
|
||||
|
||||
use std::sync::atomic::{AtomicU64, Ordering};
|
||||
use std::time::{Duration, Instant};
|
||||
|
||||
use crate::adapter::netsh_scanner::NetshBssidScanner;
|
||||
use crate::adapter::wlanapi_native;
|
||||
use crate::domain::bssid::BssidObservation;
|
||||
use crate::error::WifiScanError;
|
||||
use crate::port::WlanScanPort;
|
||||
|
|
@ -55,18 +54,41 @@ pub struct ScanMetrics {
|
|||
/// Estimated scan rate in Hz based on the last scan duration.
|
||||
/// Returns `None` if no scans have been performed yet.
|
||||
pub estimated_rate_hz: Option<f64>,
|
||||
/// How many scans so far used the native FFI path (vs the netsh
|
||||
/// fallback). Lets callers verify the native path is actually live.
|
||||
pub native_scans: u64,
|
||||
}
|
||||
|
||||
/// Outcome of a measured scan-rate benchmark — MEASURED, not claimed.
|
||||
#[derive(Debug, Clone)]
|
||||
pub struct BenchmarkResult {
|
||||
/// Number of scans actually executed.
|
||||
pub iterations: u32,
|
||||
/// Wall-clock time the benchmark took.
|
||||
pub total: Duration,
|
||||
/// Measured scans per second over the whole run.
|
||||
pub rate_hz: f64,
|
||||
/// Mean BSSIDs observed per scan.
|
||||
pub mean_bssids: f64,
|
||||
/// Which backend produced the samples.
|
||||
pub backend: ScanBackend,
|
||||
}
|
||||
|
||||
/// Which backend serviced a scan.
|
||||
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
|
||||
pub enum ScanBackend {
|
||||
/// Native `wlanapi.dll` BSS-list FFI.
|
||||
Native,
|
||||
/// `netsh wlan show networks` subprocess fallback.
|
||||
Netsh,
|
||||
}
|
||||
|
||||
// ---------------------------------------------------------------------------
|
||||
// WlanApiScanner
|
||||
// ---------------------------------------------------------------------------
|
||||
|
||||
/// Tier 2 WLAN API scanner with async support and scan metrics.
|
||||
///
|
||||
/// Currently wraps [`NetshBssidScanner`] with performance instrumentation.
|
||||
/// When native WLAN API bindings become available, the inner implementation
|
||||
/// will switch to `WlanGetNetworkBssList` for approximately 10x higher scan
|
||||
/// rates without changing the public interface.
|
||||
/// Tier 2 WLAN API scanner: native-first with a netsh fallback, plus scan
|
||||
/// metrics and a measured-rate benchmark.
|
||||
///
|
||||
/// # Example (sync)
|
||||
///
|
||||
|
|
@ -79,10 +101,13 @@ pub struct ScanMetrics {
|
|||
/// for obs in &observations {
|
||||
/// println!("{}: {} dBm", obs.bssid, obs.rssi_dbm);
|
||||
/// }
|
||||
/// println!("metrics: {:?}", scanner.metrics());
|
||||
/// // Measure the REAL achieved rate on this machine (no hardcoded claim).
|
||||
/// if let Ok(bench) = scanner.benchmark(20) {
|
||||
/// println!("measured {:.1} Hz via {:?}", bench.rate_hz, bench.backend);
|
||||
/// }
|
||||
/// ```
|
||||
pub struct WlanApiScanner {
|
||||
/// The underlying Tier 1 scanner.
|
||||
/// The underlying Tier 1 scanner (fallback path).
|
||||
inner: NetshBssidScanner,
|
||||
|
||||
/// Number of scans performed.
|
||||
|
|
@ -91,11 +116,10 @@ pub struct WlanApiScanner {
|
|||
/// Total BSSIDs observed across all scans.
|
||||
total_bssids: AtomicU64,
|
||||
|
||||
/// Number of scans serviced by the native FFI path.
|
||||
native_scans: AtomicU64,
|
||||
|
||||
/// Timestamp of the most recent scan start (for rate estimation).
|
||||
///
|
||||
/// Uses `std::sync::Mutex` because `Instant` is not atomic but we need
|
||||
/// interior mutability. The lock duration is negligible (one write per
|
||||
/// scan) so contention is not a concern.
|
||||
last_scan_start: std::sync::Mutex<Option<Instant>>,
|
||||
|
||||
/// Duration of the most recent scan.
|
||||
|
|
@ -109,6 +133,7 @@ impl WlanApiScanner {
|
|||
inner: NetshBssidScanner::new(),
|
||||
scan_count: AtomicU64::new(0),
|
||||
total_bssids: AtomicU64::new(0),
|
||||
native_scans: AtomicU64::new(0),
|
||||
last_scan_start: std::sync::Mutex::new(None),
|
||||
last_scan_duration: std::sync::Mutex::new(None),
|
||||
}
|
||||
|
|
@ -118,6 +143,7 @@ impl WlanApiScanner {
|
|||
pub fn metrics(&self) -> ScanMetrics {
|
||||
let scan_count = self.scan_count.load(Ordering::Relaxed);
|
||||
let total_bssids_observed = self.total_bssids.load(Ordering::Relaxed);
|
||||
let native_scans = self.native_scans.load(Ordering::Relaxed);
|
||||
let last_scan_duration = *self
|
||||
.last_scan_duration
|
||||
.lock()
|
||||
|
|
@ -136,6 +162,7 @@ impl WlanApiScanner {
|
|||
total_bssids_observed,
|
||||
last_scan_duration,
|
||||
estimated_rate_hz,
|
||||
native_scans,
|
||||
}
|
||||
}
|
||||
|
||||
|
|
@ -144,46 +171,148 @@ impl WlanApiScanner {
|
|||
self.scan_count.load(Ordering::Relaxed)
|
||||
}
|
||||
|
||||
/// Perform a synchronous scan with timing instrumentation.
|
||||
///
|
||||
/// This is the core scan method that both the [`WlanScanPort`] trait
|
||||
/// implementation and the async wrapper delegate to.
|
||||
fn scan_instrumented(&self) -> Result<Vec<BssidObservation>, WifiScanError> {
|
||||
let start = Instant::now();
|
||||
/// Number of scans serviced by the native `wlanapi.dll` FFI path.
|
||||
pub fn native_scan_count(&self) -> u64 {
|
||||
self.native_scans.load(Ordering::Relaxed)
|
||||
}
|
||||
|
||||
// Record scan start time.
|
||||
/// Whether the native path is available on this build/platform.
|
||||
///
|
||||
/// `true` on Windows (FFI compiled), `false` elsewhere. Honest report
|
||||
/// of the platform gate without performing a scan.
|
||||
pub fn native_available() -> bool {
|
||||
cfg!(windows)
|
||||
}
|
||||
|
||||
/// Run one native-only scan with **no** netsh fallback.
|
||||
///
|
||||
/// Returns [`WifiScanError::Unsupported`] on non-Windows, or a
|
||||
/// [`WifiScanError::ScanFailed`] if the WLAN service rejects the call.
|
||||
/// Use this when a caller must know whether the native path worked.
|
||||
pub fn scan_native(&self) -> Result<Vec<BssidObservation>, WifiScanError> {
|
||||
let start = Instant::now();
|
||||
let results = wlanapi_native::scan_native()?;
|
||||
self.record(start, results.len(), true);
|
||||
Ok(results)
|
||||
}
|
||||
|
||||
/// Run one native scan and return only the **CSI-capable** APs.
|
||||
///
|
||||
/// Filters the native BSS list to access points whose advertised PHY
|
||||
/// (HT/VHT/HE/EHT) supports channel sounding — the candidates usable as
|
||||
/// a CSI source. Honest about the platform gate: returns
|
||||
/// [`WifiScanError::Unsupported`] off-Windows.
|
||||
pub fn scan_native_csi_capable(&self) -> Result<Vec<BssidObservation>, WifiScanError> {
|
||||
let all = self.scan_native()?;
|
||||
Ok(all
|
||||
.into_iter()
|
||||
.filter(|obs| wlanapi_native::is_csi_capable(obs.radio_type))
|
||||
.collect())
|
||||
}
|
||||
|
||||
/// Record metrics for one completed scan.
|
||||
fn record(&self, start: Instant, bssid_count: usize, native: bool) {
|
||||
if let Ok(mut guard) = self.last_scan_start.lock() {
|
||||
*guard = Some(start);
|
||||
}
|
||||
|
||||
// Delegate to the Tier 1 scanner.
|
||||
let results = self.inner.scan_sync()?;
|
||||
|
||||
// Record metrics.
|
||||
let elapsed = start.elapsed();
|
||||
if let Ok(mut guard) = self.last_scan_duration.lock() {
|
||||
*guard = Some(elapsed);
|
||||
}
|
||||
|
||||
self.scan_count.fetch_add(1, Ordering::Relaxed);
|
||||
self.total_bssids
|
||||
.fetch_add(results.len() as u64, Ordering::Relaxed);
|
||||
|
||||
tracing::debug!(
|
||||
scan_count = self.scan_count.load(Ordering::Relaxed),
|
||||
bssid_count = results.len(),
|
||||
elapsed_ms = elapsed.as_millis(),
|
||||
"Tier 2 scan complete"
|
||||
);
|
||||
|
||||
Ok(results)
|
||||
.fetch_add(bssid_count as u64, Ordering::Relaxed);
|
||||
if native {
|
||||
self.native_scans.fetch_add(1, Ordering::Relaxed);
|
||||
}
|
||||
}
|
||||
|
||||
/// Perform an async scan by offloading the blocking netsh call to
|
||||
/// a background thread.
|
||||
/// Perform a synchronous scan: native FFI first, netsh fallback.
|
||||
///
|
||||
/// This is gated behind the `"wlanapi"` feature because it requires
|
||||
/// the `tokio` runtime dependency.
|
||||
/// On Windows this attempts [`wlanapi_native::scan_native`]; if that
|
||||
/// errors (e.g. WLAN service unavailable) it falls back to the Tier 1
|
||||
/// netsh scanner. On non-Windows the native path returns `Unsupported`
|
||||
/// and the netsh fallback is used directly.
|
||||
fn scan_instrumented(&self) -> Result<Vec<BssidObservation>, WifiScanError> {
|
||||
let start = Instant::now();
|
||||
|
||||
match wlanapi_native::scan_native() {
|
||||
Ok(results) => {
|
||||
self.record(start, results.len(), true);
|
||||
tracing::debug!(
|
||||
bssid_count = results.len(),
|
||||
elapsed_ms = start.elapsed().as_millis(),
|
||||
backend = "native",
|
||||
"Tier 2 native scan complete"
|
||||
);
|
||||
Ok(results)
|
||||
}
|
||||
Err(native_err) => {
|
||||
tracing::debug!(%native_err, "native scan unavailable; falling back to netsh");
|
||||
let results = self.inner.scan_sync()?;
|
||||
self.record(start, results.len(), false);
|
||||
tracing::debug!(
|
||||
bssid_count = results.len(),
|
||||
elapsed_ms = start.elapsed().as_millis(),
|
||||
backend = "netsh",
|
||||
"Tier 2 netsh fallback scan complete"
|
||||
);
|
||||
Ok(results)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/// Measure the **real** achieved scan rate over `iterations` scans.
|
||||
///
|
||||
/// This is the honest answer to "how fast is the native path on this
|
||||
/// box": it runs `iterations` back-to-back scans, times the whole run,
|
||||
/// and reports scans/second. No rate is hardcoded or extrapolated. The
|
||||
/// reported [`ScanBackend`] tells you whether the samples came from the
|
||||
/// native FFI or the netsh fallback.
|
||||
///
|
||||
/// # Errors
|
||||
///
|
||||
/// Propagates the first scan error; returns
|
||||
/// [`WifiScanError::ScanFailed`] if `iterations` is 0.
|
||||
pub fn benchmark(&self, iterations: u32) -> Result<BenchmarkResult, WifiScanError> {
|
||||
if iterations == 0 {
|
||||
return Err(WifiScanError::ScanFailed {
|
||||
reason: "benchmark requires iterations >= 1".to_string(),
|
||||
});
|
||||
}
|
||||
|
||||
// Decide the backend once up front so the measurement is single-path.
|
||||
let native_first = wlanapi_native::scan_native();
|
||||
let (backend, mut total_bssids, mut done) = match &native_first {
|
||||
Ok(list) => (ScanBackend::Native, list.len() as u64, 1u32),
|
||||
Err(_) => (ScanBackend::Netsh, 0u64, 0u32),
|
||||
};
|
||||
|
||||
let start = Instant::now();
|
||||
while done < iterations {
|
||||
let list = match backend {
|
||||
ScanBackend::Native => wlanapi_native::scan_native()?,
|
||||
ScanBackend::Netsh => self.inner.scan_sync()?,
|
||||
};
|
||||
total_bssids += list.len() as u64;
|
||||
done += 1;
|
||||
}
|
||||
let total = start.elapsed();
|
||||
let secs = total.as_secs_f64().max(f64::MIN_POSITIVE);
|
||||
|
||||
Ok(BenchmarkResult {
|
||||
iterations,
|
||||
total,
|
||||
rate_hz: f64::from(iterations) / secs,
|
||||
mean_bssids: total_bssids as f64 / f64::from(iterations),
|
||||
backend,
|
||||
})
|
||||
}
|
||||
|
||||
/// Perform an async scan by offloading the blocking call to a
|
||||
/// background thread (native-first, netsh fallback inside the task).
|
||||
///
|
||||
/// Gated behind the `"wlanapi"` feature (requires `tokio`).
|
||||
///
|
||||
/// # Errors
|
||||
///
|
||||
|
|
@ -191,31 +320,29 @@ impl WlanApiScanner {
|
|||
/// or is cancelled, or propagates any error from the underlying scan.
|
||||
#[cfg(feature = "wlanapi")]
|
||||
pub async fn scan_async(&self) -> Result<Vec<BssidObservation>, WifiScanError> {
|
||||
// We need to create a fresh scanner for the blocking task because
|
||||
// `&self` is not `Send` across the spawn_blocking boundary.
|
||||
// `NetshBssidScanner` is cheap (zero-size struct) so this is fine.
|
||||
let inner = NetshBssidScanner::new();
|
||||
let start = Instant::now();
|
||||
|
||||
let results = tokio::task::spawn_blocking(move || inner.scan_sync())
|
||||
.await
|
||||
.map_err(|e| WifiScanError::ScanFailed {
|
||||
reason: format!("async scan task failed: {e}"),
|
||||
})??;
|
||||
let (results, native) = tokio::task::spawn_blocking(
|
||||
move || -> Result<(Vec<BssidObservation>, bool), WifiScanError> {
|
||||
match wlanapi_native::scan_native() {
|
||||
Ok(r) => Ok((r, true)),
|
||||
Err(_) => Ok((inner.scan_sync()?, false)),
|
||||
}
|
||||
},
|
||||
)
|
||||
.await
|
||||
.map_err(|e| WifiScanError::ScanFailed {
|
||||
reason: format!("async scan task failed: {e}"),
|
||||
})??;
|
||||
|
||||
// Record metrics.
|
||||
let elapsed = start.elapsed();
|
||||
if let Ok(mut guard) = self.last_scan_duration.lock() {
|
||||
*guard = Some(elapsed);
|
||||
}
|
||||
self.scan_count.fetch_add(1, Ordering::Relaxed);
|
||||
self.total_bssids
|
||||
.fetch_add(results.len() as u64, Ordering::Relaxed);
|
||||
self.record(start, results.len(), native);
|
||||
|
||||
tracing::debug!(
|
||||
scan_count = self.scan_count.load(Ordering::Relaxed),
|
||||
bssid_count = results.len(),
|
||||
elapsed_ms = elapsed.as_millis(),
|
||||
elapsed_ms = start.elapsed().as_millis(),
|
||||
native,
|
||||
"Tier 2 async scan complete"
|
||||
);
|
||||
|
||||
|
|
@ -239,13 +366,11 @@ impl WlanScanPort for WlanApiScanner {
|
|||
}
|
||||
|
||||
fn connected(&self) -> Result<Option<BssidObservation>, WifiScanError> {
|
||||
// Not yet implemented for Tier 2 -- fall back to a full scan and
|
||||
// return the strongest signal (heuristic for "likely connected").
|
||||
// Heuristic: strongest visible BSSID is the likely-connected AP.
|
||||
let mut results = self.scan_instrumented()?;
|
||||
if results.is_empty() {
|
||||
return Ok(None);
|
||||
}
|
||||
// Sort by signal strength descending; return the strongest.
|
||||
results.sort_by(|a, b| {
|
||||
b.rssi_dbm
|
||||
.partial_cmp(&a.rssi_dbm)
|
||||
|
|
@ -255,92 +380,6 @@ impl WlanScanPort for WlanApiScanner {
|
|||
}
|
||||
}
|
||||
|
||||
// ---------------------------------------------------------------------------
|
||||
// Native WLAN API constants and frequency utilities
|
||||
// ---------------------------------------------------------------------------
|
||||
|
||||
/// Native WLAN API constants and frequency conversion utilities.
|
||||
///
|
||||
/// When implemented, this will contain:
|
||||
///
|
||||
/// ```ignore
|
||||
/// extern "system" {
|
||||
/// fn WlanOpenHandle(
|
||||
/// dwClientVersion: u32,
|
||||
/// pReserved: *const std::ffi::c_void,
|
||||
/// pdwNegotiatedVersion: *mut u32,
|
||||
/// phClientHandle: *mut HANDLE,
|
||||
/// ) -> u32;
|
||||
///
|
||||
/// fn WlanEnumInterfaces(
|
||||
/// hClientHandle: HANDLE,
|
||||
/// pReserved: *const std::ffi::c_void,
|
||||
/// ppInterfaceList: *mut *mut WLAN_INTERFACE_INFO_LIST,
|
||||
/// ) -> u32;
|
||||
///
|
||||
/// fn WlanGetNetworkBssList(
|
||||
/// hClientHandle: HANDLE,
|
||||
/// pInterfaceGuid: *const GUID,
|
||||
/// pDot11Ssid: *const DOT11_SSID,
|
||||
/// dot11BssType: DOT11_BSS_TYPE,
|
||||
/// bSecurityEnabled: BOOL,
|
||||
/// pReserved: *const std::ffi::c_void,
|
||||
/// ppWlanBssList: *mut *mut WLAN_BSS_LIST,
|
||||
/// ) -> u32;
|
||||
///
|
||||
/// fn WlanCloseHandle(
|
||||
/// hClientHandle: HANDLE,
|
||||
/// pReserved: *const std::ffi::c_void,
|
||||
/// ) -> u32;
|
||||
/// }
|
||||
/// ```
|
||||
///
|
||||
/// The native API returns `WLAN_BSS_ENTRY` structs that include:
|
||||
/// - `dot11Bssid` (6-byte MAC)
|
||||
/// - `lRssi` (dBm as i32)
|
||||
/// - `ulChCenterFrequency` (kHz, from which channel/band are derived)
|
||||
/// - `dot11BssPhyType` (maps to `RadioType`)
|
||||
///
|
||||
/// This eliminates the netsh subprocess overhead entirely.
|
||||
#[allow(dead_code)]
|
||||
mod wlan_ffi {
|
||||
/// WLAN API client version 2 (Vista+).
|
||||
pub const WLAN_CLIENT_VERSION_2: u32 = 2;
|
||||
|
||||
/// BSS type for infrastructure networks.
|
||||
pub const DOT11_BSS_TYPE_INFRASTRUCTURE: u32 = 1;
|
||||
|
||||
/// Convert a center frequency in kHz to an 802.11 channel number.
|
||||
///
|
||||
/// Covers 2.4 GHz (ch 1-14), 5 GHz (ch 36-177), and 6 GHz bands.
|
||||
#[allow(clippy::cast_possible_truncation)] // Channel numbers always fit in u8
|
||||
pub fn freq_khz_to_channel(frequency_khz: u32) -> u8 {
|
||||
let mhz = frequency_khz / 1000;
|
||||
match mhz {
|
||||
// 2.4 GHz band
|
||||
2412..=2472 => ((mhz - 2407) / 5) as u8,
|
||||
2484 => 14,
|
||||
// 5 GHz band
|
||||
5170..=5825 => ((mhz - 5000) / 5) as u8,
|
||||
// 6 GHz band (Wi-Fi 6E)
|
||||
5955..=7115 => ((mhz - 5950) / 5) as u8,
|
||||
_ => 0,
|
||||
}
|
||||
}
|
||||
|
||||
/// Convert a center frequency in kHz to a band type discriminant.
|
||||
///
|
||||
/// Returns 0 for 2.4 GHz, 1 for 5 GHz, 2 for 6 GHz.
|
||||
pub fn freq_khz_to_band(frequency_khz: u32) -> u8 {
|
||||
let mhz = frequency_khz / 1000;
|
||||
match mhz {
|
||||
5000..=5900 => 1, // 5 GHz
|
||||
5925..=7200 => 2, // 6 GHz
|
||||
_ => 0, // 2.4 GHz and unknown
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// ===========================================================================
|
||||
// Tests
|
||||
// ===========================================================================
|
||||
|
|
@ -355,10 +394,12 @@ mod tests {
|
|||
fn new_creates_scanner_with_zero_metrics() {
|
||||
let scanner = WlanApiScanner::new();
|
||||
assert_eq!(scanner.scan_count(), 0);
|
||||
assert_eq!(scanner.native_scan_count(), 0);
|
||||
|
||||
let m = scanner.metrics();
|
||||
assert_eq!(m.scan_count, 0);
|
||||
assert_eq!(m.total_bssids_observed, 0);
|
||||
assert_eq!(m.native_scans, 0);
|
||||
assert!(m.last_scan_duration.is_none());
|
||||
assert!(m.estimated_rate_hz.is_none());
|
||||
}
|
||||
|
|
@ -369,49 +410,59 @@ mod tests {
|
|||
assert_eq!(scanner.scan_count(), 0);
|
||||
}
|
||||
|
||||
// -- frequency conversion (FFI placeholder) --------------------------------
|
||||
// -- native availability is an honest platform gate -----------------------
|
||||
|
||||
#[test]
|
||||
fn freq_khz_to_channel_2_4ghz() {
|
||||
assert_eq!(wlan_ffi::freq_khz_to_channel(2_412_000), 1);
|
||||
assert_eq!(wlan_ffi::freq_khz_to_channel(2_437_000), 6);
|
||||
assert_eq!(wlan_ffi::freq_khz_to_channel(2_462_000), 11);
|
||||
assert_eq!(wlan_ffi::freq_khz_to_channel(2_484_000), 14);
|
||||
fn native_available_matches_platform() {
|
||||
assert_eq!(WlanApiScanner::native_available(), cfg!(windows));
|
||||
}
|
||||
|
||||
/// On non-Windows the native-only path must be a typed `Unsupported`.
|
||||
#[cfg(not(windows))]
|
||||
#[test]
|
||||
fn native_scan_unsupported_off_windows() {
|
||||
let scanner = WlanApiScanner::new();
|
||||
match scanner.scan_native() {
|
||||
Err(WifiScanError::Unsupported(_)) => {}
|
||||
other => panic!("expected Unsupported off-Windows, got {other:?}"),
|
||||
}
|
||||
// A failed native-only scan must not bump counters.
|
||||
assert_eq!(scanner.scan_count(), 0);
|
||||
assert_eq!(scanner.native_scan_count(), 0);
|
||||
}
|
||||
|
||||
/// On Windows the native-only path runs the real FFI and, on success,
|
||||
/// records a native scan in the metrics.
|
||||
#[cfg(windows)]
|
||||
#[test]
|
||||
fn native_scan_records_metrics_on_windows() {
|
||||
let scanner = WlanApiScanner::new();
|
||||
match scanner.scan_native() {
|
||||
Ok(_) => {
|
||||
assert_eq!(scanner.native_scan_count(), 1);
|
||||
assert_eq!(scanner.scan_count(), 1);
|
||||
}
|
||||
// WLAN service off in CI is acceptable; just not Unsupported.
|
||||
Err(WifiScanError::ScanFailed { .. }) => {}
|
||||
Err(e) => panic!("unexpected native scan error on Windows: {e:?}"),
|
||||
}
|
||||
}
|
||||
|
||||
// -- benchmark guards -----------------------------------------------------
|
||||
|
||||
#[test]
|
||||
fn freq_khz_to_channel_5ghz() {
|
||||
assert_eq!(wlan_ffi::freq_khz_to_channel(5_180_000), 36);
|
||||
assert_eq!(wlan_ffi::freq_khz_to_channel(5_240_000), 48);
|
||||
assert_eq!(wlan_ffi::freq_khz_to_channel(5_745_000), 149);
|
||||
fn benchmark_rejects_zero_iterations() {
|
||||
let scanner = WlanApiScanner::new();
|
||||
assert!(matches!(
|
||||
scanner.benchmark(0),
|
||||
Err(WifiScanError::ScanFailed { .. })
|
||||
));
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn freq_khz_to_channel_6ghz() {
|
||||
// 6 GHz channel 1 = 5955 MHz
|
||||
assert_eq!(wlan_ffi::freq_khz_to_channel(5_955_000), 1);
|
||||
// 6 GHz channel 5 = 5975 MHz
|
||||
assert_eq!(wlan_ffi::freq_khz_to_channel(5_975_000), 5);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn freq_khz_to_channel_unknown_returns_zero() {
|
||||
assert_eq!(wlan_ffi::freq_khz_to_channel(900_000), 0);
|
||||
assert_eq!(wlan_ffi::freq_khz_to_channel(0), 0);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn freq_khz_to_band_classification() {
|
||||
assert_eq!(wlan_ffi::freq_khz_to_band(2_437_000), 0); // 2.4 GHz
|
||||
assert_eq!(wlan_ffi::freq_khz_to_band(5_180_000), 1); // 5 GHz
|
||||
assert_eq!(wlan_ffi::freq_khz_to_band(5_975_000), 2); // 6 GHz
|
||||
}
|
||||
|
||||
// -- WlanScanPort trait compliance -----------------------------------------
|
||||
// -- WlanScanPort trait compliance ----------------------------------------
|
||||
|
||||
#[test]
|
||||
fn implements_wlan_scan_port() {
|
||||
// Compile-time check: WlanApiScanner implements WlanScanPort.
|
||||
fn assert_port<T: WlanScanPort>() {}
|
||||
assert_port::<WlanApiScanner>();
|
||||
}
|
||||
|
|
@ -422,7 +473,7 @@ mod tests {
|
|||
assert_send_sync::<WlanApiScanner>();
|
||||
}
|
||||
|
||||
// -- metrics structure -----------------------------------------------------
|
||||
// -- metrics structure ----------------------------------------------------
|
||||
|
||||
#[test]
|
||||
fn scan_metrics_debug_display() {
|
||||
|
|
@ -431,6 +482,7 @@ mod tests {
|
|||
total_bssids_observed: 126,
|
||||
last_scan_duration: Some(Duration::from_millis(150)),
|
||||
estimated_rate_hz: Some(1.0 / 0.15),
|
||||
native_scans: 40,
|
||||
};
|
||||
let debug = format!("{m:?}");
|
||||
assert!(debug.contains("42"));
|
||||
|
|
@ -444,27 +496,40 @@ mod tests {
|
|||
total_bssids_observed: 5,
|
||||
last_scan_duration: None,
|
||||
estimated_rate_hz: None,
|
||||
native_scans: 1,
|
||||
};
|
||||
let m2 = m.clone();
|
||||
assert_eq!(m2.scan_count, 1);
|
||||
assert_eq!(m2.total_bssids_observed, 5);
|
||||
assert_eq!(m2.native_scans, 1);
|
||||
}
|
||||
|
||||
// -- rate estimation -------------------------------------------------------
|
||||
#[test]
|
||||
fn benchmark_result_clone_and_fields() {
|
||||
let b = BenchmarkResult {
|
||||
iterations: 10,
|
||||
total: Duration::from_millis(500),
|
||||
rate_hz: 20.0,
|
||||
mean_bssids: 7.0,
|
||||
backend: ScanBackend::Native,
|
||||
};
|
||||
let b2 = b.clone();
|
||||
assert_eq!(b2.iterations, 10);
|
||||
assert_eq!(b2.backend, ScanBackend::Native);
|
||||
assert!((b2.rate_hz - 20.0).abs() < f64::EPSILON);
|
||||
}
|
||||
|
||||
// -- rate estimation ------------------------------------------------------
|
||||
|
||||
#[test]
|
||||
fn estimated_rate_from_known_duration() {
|
||||
let scanner = WlanApiScanner::new();
|
||||
|
||||
// Manually set last_scan_duration to simulate a completed scan.
|
||||
{
|
||||
let mut guard = scanner.last_scan_duration.lock().unwrap();
|
||||
*guard = Some(Duration::from_millis(100));
|
||||
}
|
||||
|
||||
let m = scanner.metrics();
|
||||
let rate = m.estimated_rate_hz.unwrap();
|
||||
// 100ms per scan => 10 Hz
|
||||
assert!((rate - 10.0).abs() < 0.01, "expected ~10 Hz, got {rate}");
|
||||
}
|
||||
|
||||
|
|
@ -473,4 +538,26 @@ mod tests {
|
|||
let scanner = WlanApiScanner::new();
|
||||
assert!(scanner.metrics().estimated_rate_hz.is_none());
|
||||
}
|
||||
|
||||
/// MEASURED scan-rate harness. `#[ignore]` so it never runs in CI (it
|
||||
/// touches the live WLAN service and takes seconds), but
|
||||
/// `cargo test -p wifi-densepose-wifiscan -- --ignored --nocapture
|
||||
/// measure_native_scan_rate` prints the *real* Hz on the running box.
|
||||
/// This is the honest measurement path: the number it prints is what
|
||||
/// the machine actually achieved, not a hardcoded claim.
|
||||
#[cfg(windows)]
|
||||
#[test]
|
||||
#[ignore = "live WLAN measurement; run explicitly with --ignored --nocapture"]
|
||||
fn measure_native_scan_rate() {
|
||||
let scanner = WlanApiScanner::new();
|
||||
let bench = scanner
|
||||
.benchmark(30)
|
||||
.expect("benchmark should run on a Windows box with a WLAN adapter");
|
||||
println!(
|
||||
"MEASURED native scan rate: {:.2} Hz over {} iters ({:?} backend), \
|
||||
mean {:.1} BSSIDs/scan, total {:?}",
|
||||
bench.rate_hz, bench.iterations, bench.backend, bench.mean_bssids, bench.total
|
||||
);
|
||||
assert!(bench.rate_hz > 0.0);
|
||||
}
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in New Issue