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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

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flamingcow
2026-08-05 10:49:23 -07:00
parent 88f4f7da80
commit 2fcab83756
5 changed files with 335 additions and 32 deletions
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ui.go
+15 -9
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@@ -267,8 +267,9 @@ func (d *display) chipH() int { return d.grid.lineH + 2*chipPadY }
func (d *display) countChipH() int { return d.chipH() + d.gridB.lineH + pairGap }
// The error chips plus the noise cable's, which shares their row grid.
func (d *display) chipsH() int {
return gridRows(len(errRows))*(d.chipH()+chipGap) - chipGap
return gridRows(len(errRows)+1)*(d.chipH()+chipGap) - chipGap
}
func (d *display) countsH() int {
@@ -277,8 +278,8 @@ func (d *display) countsH() int {
// Outlined by drawing the border colour and sinking a smaller well of
// background into it, so both curves get the same antialiasing.
func (d *display) chipAt(i, x, w, y, h int, c rgb) (int, int, int) {
cx, cw := gridCell(i, len(errRows), x, w)
func (d *display) chipAt(i, n, x, w, y, h int, c rgb) (int, int, int) {
cx, cw := gridCell(i, n, x, w)
cy := y + (i/gridCols)*(h+chipGap)
d.fb.roundRect(cx, cy, cw, h, chipRadius, c)
@@ -288,13 +289,18 @@ func (d *display) chipAt(i, x, w, y, h int, c rgb) (int, int, int) {
}
// Whether rather than how many: over a window this short a count changes faster
// than it can be read.
func (d *display) errChips(x, w, y int, e errs) int {
// than it can be read. The noise chip rides along at the end, presence rather
// than health: red is the cable missing, not the cable failing.
func (d *display) errChips(x, w, y int, e errs, noiseMissing uint64) int {
n := len(errRows) + 1
for i, r := range errRows {
c := errColor(r.get(e))
cx, cw, cy := d.chipAt(i, x, w, y, d.chipH(), c)
cx, cw, cy := d.chipAt(i, n, x, w, y, d.chipH(), c)
d.centerIn(d.grid, cx, cw, cy+chipPadY, r.label, c)
}
c := errColor(noiseMissing)
cx, cw, cy := d.chipAt(len(errRows), n, x, w, y, d.chipH(), c)
d.centerIn(d.grid, cx, cw, cy+chipPadY, "noise", c)
return y + d.chipsH()
}
@@ -302,7 +308,7 @@ func (d *display) errCounts(x, w, y int, e errs) int {
for i, r := range errRows {
n := r.get(e)
c := errColor(n)
cx, cw, cy := d.chipAt(i, x, w, y, d.countChipH(), c)
cx, cw, cy := d.chipAt(i, len(errRows), x, w, y, d.countChipH(), c)
ty := d.centerIn(d.gridB, cx, cw, cy+chipPadY, scaleCount(n), c)
d.centerIn(d.grid, cx, cw, ty, r.label, c)
}
@@ -329,7 +335,7 @@ func errColor(n uint64) rgb {
return uiRed
}
func (d *display) render(v view, elapsed time.Duration, cable string) error {
func (d *display) render(v view, elapsed time.Duration, cable string, noiseMissing uint64) error {
fb := d.fb
fb.fill(uiBg)
@@ -338,7 +344,7 @@ func (d *display) render(v view, elapsed time.Duration, cable string) error {
{scaleSI(v.rxGbps * 1e9), "bits/s", uiFg},
{scaleSI(v.rxPPS), "packets/s", uiFg},
})
d.errChips(x, w, d.nowYs[1], v.window)
d.errChips(x, w, d.nowYs[1], v.window, noiseMissing)
x, w = d.panel(d.sincePanel, v.since)
d.stats(d.gridB, x, w, d.sinceYs[0], []statCell{