theater/cabletest

T

flamingcow fef6b52b74 Force master/slave roles at bringup (A master / B slave, IEEE 7.32): the AN role lottery plus per-training DSP convergence moves per-pair SNR up to ~3.6 dB, so sessions are pinned to identical conditions; launch power documented firmware-pinned (1.130), single-training SNR documented as a weak qualification number

2026-08-13 14:23:57 -07:00

Force master/slave roles at bringup (A master / B slave, IEEE 7.32): the AN role lottery plus per-training DSP convergence moves per-pair SNR up to ~3.6 dB, so sessions are pinned to identical conditions; launch power documented firmware-pinned (1.130), single-training SNR documented as a weak qualification number

2026-08-13 14:23:57 -07:00

Render the live status to the framebuffer in Atkinson Hyperlegible Mono

2026-07-25 19:41:53 -07:00

Move the shared drm ioctl abi into internal/drm

2026-08-04 13:21:50 -07:00

Cut the drm package comments back to what is not evident from the code

2026-08-04 13:23:41 -07:00

Drive a noise cable on the i40e pair, cycling its link down and up since the module PHYs ignore everything softer, and flag its absence beside the error columns

2026-08-05 10:49:23 -07:00

.gitignore

Fold the leftover formatters into the SI ones and stop reallocating the draw scratch

2026-08-04 13:37:19 -07:00

counters.go

Jumbo in the size mix (MTU 9000 + module jumbo pinned), check-first module config trusting GET reads, cable diag async at startup through the reset path, MODULES table dissolved into SETTINGS/LINKS, per-driver NIC counter sets, comment cleanup

2026-08-13 08:04:26 -07:00

fatal.go

Hold a fatal error on the framebuffer and reboot in five minutes rather than exiting, since init's death drops the kernel's panic screen over the cause

2026-08-05 21:46:15 -07:00

fb.go

Hold a fatal error on the framebuffer and reboot in five minutes rather than exiting, since init's death drops the kernel's panic screen over the cause

2026-08-05 21:46:15 -07:00

frame_test.go

Checksum the header and refuse sequence numbers the sender never sent

2026-08-04 20:41:16 -07:00

frame.go

Check the header version on arrival and say what the error window actually spans

2026-08-04 21:29:03 -07:00

go.mod

Clear staticcheck, gopls and go.mod warnings

2026-07-26 10:33:38 -07:00

go.sum

Render the live status to the framebuffer in Atkinson Hyperlegible Mono

2026-07-25 19:41:53 -07:00

init.go

Jumbo in the size mix (MTU 9000 + module jumbo pinned), check-first module config trusting GET reads, cable diag async at startup through the reset path, MODULES table dissolved into SETTINGS/LINKS, per-driver NIC counter sets, comment cleanup

2026-08-13 08:04:26 -07:00

input.go

Hold a fatal error on the framebuffer and reboot in five minutes rather than exiting, since init's death drops the kernel's panic screen over the cause

2026-08-05 21:46:15 -07:00

loss_test.go

Checksum the header and refuse sequence numbers the sender never sent

2026-08-04 20:41:16 -07:00

loss.go

Fold the shutdown flags into one, take the smallest frame to the wire minimum, drop the speed column

2026-08-04 22:12:07 -07:00

main_test.go

BCM module diagnostics replace timestamp probes: bringup forces EEE off and runs ECD (re-run on every reset, re-baselining past its blip), 1 Hz SNR margin + corrected counters on panel and console; X520 bench divergences bypassed and tracked in open-questions

2026-08-13 07:10:39 -07:00

main.go

Windowed module protocol: every op admitted inside a 3.4s window after the firmware's observed temp poll (cadence 3.5-4.2s measured, stuck-at-last-fetch stale mechanism proven and avoided), acquire/window with panic on dead heartbeat; noise column shows green on/off cycle phase, cable-missing state unchanged

2026-08-13 14:04:16 -07:00

mkimage

Build i40e into the appliance kernel, whose forbidden list predated the noise pair that needs it

2026-08-05 21:46:15 -07:00

noise.go

Windowed module protocol: every op admitted inside a 3.4s window after the firmware's observed temp poll (cadence 3.5-4.2s measured, stuck-at-last-fetch stale mechanism proven and avoided), acquire/window with panic on dead heartbeat; noise column shows green on/off cycle phase, cable-missing state unchanged

2026-08-13 14:04:16 -07:00

phy_test.go

Jumbo in the size mix (MTU 9000 + module jumbo pinned), check-first module config trusting GET reads, cable diag async at startup through the reset path, MODULES table dissolved into SETTINGS/LINKS, per-driver NIC counter sets, comment cleanup

2026-08-13 08:04:26 -07:00

phy.go

Force master/slave roles at bringup (A master / B slave, IEEE 7.32): the AN role lottery plus per-training DSP convergence moves per-pair SNR up to ~3.6 dB, so sessions are pinned to identical conditions; launch power documented firmware-pinned (1.130), single-training SNR documented as a weak qualification number

2026-08-13 14:23:57 -07:00

render_test.go

Cover the loss window, rate window, error taxonomy and formatters with tests

2026-08-04 15:46:12 -07:00

render.go

Windowed module protocol: every op admitted inside a 3.4s window after the firmware's observed temp poll (cadence 3.5-4.2s measured, stuck-at-last-fetch stale mechanism proven and avoided), acquire/window with panic on dead heartbeat; noise column shows green on/off cycle phase, cable-missing state unchanged

2026-08-13 14:04:16 -07:00

rx.go

Commit the receive counters once per batch instead of once per frame

2026-08-04 21:25:04 -07:00

sock.go

Fold the shutdown flags into one, take the smallest frame to the wire minimum, drop the speed column

2026-08-04 22:12:07 -07:00

system.go

Jumbo in the size mix (MTU 9000 + module jumbo pinned), check-first module config trusting GET reads, cable diag async at startup through the reset path, MODULES table dissolved into SETTINGS/LINKS, per-driver NIC counter sets, comment cleanup

2026-08-13 08:04:26 -07:00

text.go

Cut the comments back to the genuinely subtle ones

2026-08-01 16:14:12 -07:00

ts_test.go

Walk the control buffer by hand instead of allocating a message list per frame

2026-08-04 20:48:17 -07:00

ts.go

Jumbo in the size mix (MTU 9000 + module jumbo pinned), check-first module config trusting GET reads, cable diag async at startup through the reset path, MODULES table dissolved into SETTINGS/LINKS, per-driver NIC counter sets, comment cleanup

2026-08-13 08:04:26 -07:00

tx.go

Checksum the header and refuse sequence numbers the sender never sent

2026-08-04 20:41:16 -07:00

ui_test.go

Jumbo in the size mix (MTU 9000 + module jumbo pinned), check-first module config trusting GET reads, cable diag async at startup through the reset path, MODULES table dissolved into SETTINGS/LINKS, per-driver NIC counter sets, comment cleanup

2026-08-13 08:04:26 -07:00

ui.go

Windowed module protocol: every op admitted inside a 3.4s window after the firmware's observed temp poll (cadence 3.5-4.2s measured, stuck-at-last-fetch stale mechanism proven and avoided), acquire/window with panic on dead heartbeat; noise column shows green on/off cycle phase, cable-missing state unchanged

2026-08-13 14:04:16 -07:00

docs/README.md

cabletest docs

Project knowledge that moves and versions with the repo.

General:

goals.md — what cabletest is for and what it must output.
state.md — where things are now: committed vs stashed, the box and what's in it, bringup progress, open items. All current-placement state lives here and only here.
hardware.md — host rules: interface conventions, tuning, how to run.
measurement.md — how to measure correctly; performance results and dead ends.
open-questions.md — the genuinely open problems, as pointers into the docs that hold their detail.

Per-device (each directory: device doc + its datasheets):

nics/ — the transport rule, the comparison table, and one directory per NIC: x520, connectx-5, x710, e810.
modules/ — module inventory, media-lies table, the shared IEEE register set, RollBall protocol, cable-length physics, and one directory per module: fs, wiitek, fibergaga.