Rack: ConnectX-3 SFP+ cards in the ZimaBoards' PCIe slots; correct NIC mapping

From the rack photo, each ZimaBoard has a single-port ConnectX-3 lying flat
in its side PCIe slot with a DAC attached. Front drawing "ZimaBoard 832 +
ConnectX-3" draws the card beside the board at scale: PCB at board height,
heatsink, SFP+ cage with the DAC and pull tab, and a Gandalf link mark for
the card's interface.

The jacks were lit in NIC name order, which put the ConnectX-3 (enp1s0, PCI
bus 1) on the left RJ45. The onboard ports are enp2s0 (left) and enp3s0
(right); the PCIe card is enp1s0.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

README.md

@@ -150,9 +150,11 @@ The rack front, drawn from the rack units set on cutsheet items, top first.
   and facing.
 - **Shelves to scale**: a shelf draws its contents left to right by **Position on shelf**, at true scale
   (a 19" panel is 482.6 mm). Gear with a drawing, such as the IceWhale ZimaBoard 832 (traced from
-  IceWhale's labelled photo of its port end), shows its real ports: each RJ45's link light follows the
-  host's physical NICs in name order (first NIC on the left jack), and the status glow follows the
-  host. Anything else is a labelled box.
+  IceWhale's labelled photo of its port end), shows its real ports: the onboard RJ45 link lights follow
+  enp2s0 (left) and enp3s0 (right), and the status glow follows the host. The "ZimaBoard 832 +
+  ConnectX-3" drawing adds the single-port SFP+ card lying flat in the side PCIe slot, as in the rack,
+  with a DAC attached; its round dot is Gandalf's link mark for enp1s0 (the slot is PCI bus 1), not an
+  LED on the card. Anything else is a labelled box.
 - **Racks**: admins name a rack and set its height with **Rack settings** on the page, and add more with
   **+ Rack** (a tab per rack). Renaming a rack moves its items; an empty rack can be deleted. Each item
   has a rack (empty means the first). Until a rack is saved, racks come from config:

cutsheet.py

@@ -38,6 +38,7 @@ CHASSIS = {
     'sliger-cx4712': 'Sliger CX4712 4U (10-bay)',
     'rosewill-rsv-l4500u': 'Rosewill RSV-L4500U 4U (15-bay)',
     'zimaboard-832': 'IceWhale ZimaBoard 832 (shelf gear)',
+    'zimaboard-832-cx3': 'IceWhale ZimaBoard 832 + ConnectX-3 SFP+ in PCIe (shelf gear)',
     'server-1u': 'Generic 1U server',
     'server-2u': 'Generic 2U server',
     'server-4u': 'Generic 4U server',

static/fronts.js

@@ -172,10 +172,18 @@ function zimaUsb(x, y) {
     ${Array.from({ length: 5 }, (_, i) => `<rect class="zb-usb-pin" x="${x + 50 + i * 24}" y="${y + 46}" width="10" height="4"/>`).join('')}`;
 }
 
+// Which NIC is which on a ZimaBoard: the onboard Realtek GbE ports enumerate on PCI buses 2 and 3
+// (enp2s0 left jack, enp3s0 right), and a card in the PCIe slot on bus 1 (enp1s0, enp1s0d1).
+const ZIMA_NICS = { rj45: ['enp2s0', 'enp3s0'], slot: /^enp1s0/ };
+
+function zimaNic(ctx, name) {
+  const n = (ctx.interfaces || []).find(i => i.name === name);
+  return n ? n.up : ctx.status === 'up';
+}
+
 function zimaFront(ctx) {
-  // ctx: { status, interfaces: [{name, up}] } - one RJ45 per NIC, left to right
-  const nics = ctx.interfaces || [];
-  const link = i => (nics[i] ? nics[i].up : ctx.status === 'up');
+  // ctx: { status, interfaces: [{name, up}] }
+  const link = i => zimaNic(ctx, ZIMA_NICS.rj45[i]);
   const on = ctx.status === 'up' || ctx.status === 'degraded';
   const pads = [60, 105, 420, 470, 640, 700, 790, 835]
     .map(x => `<rect class="zb-pad" x="${x}" y="309" width="12" height="7"/>`).join('');
@@ -199,10 +207,47 @@ function zimaFront(ctx) {
     <circle class="zb-dc-pin" cx="744" cy="242" r="8"/>`;
 }
 
+// A Mellanox ConnectX-3 single-port SFP+ card (MCX311A) in the ZimaBoard's side PCIe slot, lying flat
+// beside the board as in the rack photo (wiki.lotusguild.org/zimaboards.jpg): its front edge is about
+// 54 mm (572 px at the ZimaBoard photo's 10.59 px/mm), PCB at the board's PCB height, heatsink on the
+// chip, and the SFP+ cage toward the board with a DAC plugged in and its pull tab hanging down.
+// The round dot on the cage is Gandalf's link mark (like the cutsheet marks), not an LED on the card.
+const CX3_PX = 572;
+
+function cx3Card(up) {
+  return `
+    <rect class="cx-part" x="40" y="314" width="70" height="22" rx="2"/>
+    <rect class="cx-part" x="150" y="314" width="40" height="16" rx="2"/>
+    <rect class="cx-part" x="250" y="314" width="90" height="26" rx="2"/>
+    <rect class="cx-pcb" x="0" y="296" width="${CX3_PX}" height="18" rx="2"/>
+    <rect class="cx-pcb-edge" x="0" y="296" width="${CX3_PX}" height="4"/>
+    <rect class="cx-heatsink" x="110" y="232" width="210" height="64" rx="3"/>
+    ${Array.from({ length: 9 }, (_, i) => `<rect class="cx-fin" x="${120 + i * 22}" y="232" width="9" height="64"/>`).join('')}
+    <rect class="cx-cage" x="380" y="190" width="150" height="106" rx="4"/>
+    <rect class="cx-cage-lip" x="380" y="190" width="150" height="10" rx="3"/>
+    <rect class="cx-plug" x="392" y="206" width="126" height="80" rx="5"/>
+    <rect class="cx-boot" x="410" y="220" width="90" height="52" rx="10"/>
+    <circle class="cx-cable" cx="455" cy="246" r="20"/>
+    <path class="cx-tab" d="M441 286 V392 Q441 404 455 404 Q469 404 469 392 V286"/>
+    <circle class="cx-link" cx="520" cy="200" r="13" style="fill:${up ? '#3ad16b' : '#e0312b'}"><title>Gandalf: SFP+ link ${up ? 'up' : 'down'}</title></circle>`;
+}
+
+function zimaCx3Front(ctx) {
+  return `${cx3Card(zimaNic(ctx, (ctx.interfaces || []).map(i => i.name).find(n => ZIMA_NICS.slot.test(n)) || 'enp1s0'))}
+    <g transform="translate(${CX3_PX} 0)">${zimaFront(ctx)}</g>`;
+}
+
+const ZIMA_SPECS = 'Intel Celeron N3450, 8GB LPDDR4, 32GB eMMC, 2x GbE, 2x USB 3.0, 2x SATA, PCIe 2.0 x4, 6W';
+
 const SHELF_GEAR = {
   'zimaboard-832': {
     label: 'IceWhale ZimaBoard 832', mm: ZIMA.mm, width: ZIMA.width, height: ZIMA.height, draw: zimaFront,
-    specs: 'Intel Celeron N3450, 8GB LPDDR4, 32GB eMMC, 2x GbE, 2x USB 3.0, 2x SATA, PCIe 2.0 x4, 6W',
+    specs: ZIMA_SPECS,
+  },
+  'zimaboard-832-cx3': {
+    label: 'IceWhale ZimaBoard 832 + ConnectX-3 SFP+', mm: ZIMA.mm * (ZIMA.width + CX3_PX) / ZIMA.width,
+    width: ZIMA.width + CX3_PX, height: ZIMA.height, draw: zimaCx3Front,
+    specs: `${ZIMA_SPECS}; Mellanox ConnectX-3 10G SFP+ (enp1s0) in the PCIe slot, DAC attached`,
   },
 };
 

static/style.css

@@ -1617,3 +1617,15 @@ body.fp-marks-off .fp-svg .fp-mark { display: none; }
 .zb-dc-face { fill: #2b2b2b; }
 .zb-dc-ring { fill: #4b4b4b; }
 .zb-dc-pin { fill: #c9a43a; }
+.cx-pcb { fill: #1d6b43; }
+.cx-pcb-edge { fill: #2f8a5a; }
+.cx-part { fill: #26292d; }
+.cx-heatsink { fill: #18191b; }
+.cx-fin { fill: #2c2e31; }
+.cx-cage { fill: #c8cbcf; stroke: #85898f; stroke-width: 3; }
+.cx-cage-lip { fill: #dde0e3; }
+.cx-plug { fill: #2b2e33; }
+.cx-boot { fill: #1b1d20; }
+.cx-cable { fill: #0e0f10; }
+.cx-tab { fill: none; stroke: #c9ccd0; stroke-width: 9; stroke-linejoin: round; }
+.cx-link { stroke: #101418; stroke-width: 3; }