Document ARP - Value 5

[LSantha]

Concept: ARP (Address Resolution Protocol)

Value: 5 (Critical - Fundamental network protocol)

What it is: IPv4 to hardware address resolution with cache

Key files:

• net/src/net/org/jnode/net/arp/ARPNetworkLayer.java
• net/src/net/org/jnode/net/arp/ARPCache.java

Bridges: Network layer, IPv4, Device drivers

---

Documentation Requirements

For Value 5 (Critical):

1. Update ALL 4 sections of the index (index.md):

   • Pages Table: Add new page in alphabetical order
   • Concepts → Pages: Add the page name. Also add discovered Technical Terms (e.g., "ARP cache", "MAC resolution")
   • Source Path → Pages: Map net/src/net/org/jnode/net/arp/ to the new page
   • Task Routing: Add to relevant developer task categories with meaningful routing ideas (1-3 entries)

2. Update Glossary: Add 1-sentence definition for any new project-specific term

3. Broader Search: Search for related "Helper", "Manager", "Layout", or "Constants" classes (e.g., ARP packet formats, timer management)

Skill Reference

Use update-wiki skill for wiki maintenance workflow

---

Related Concepts (from index.md)

• [[Network-Stack]]
• [[Network-Stack]] (IPv4 mentioned)

[LSantha]

/oc Please proceed with this task.

[opencode-agent]

Done. Created the ARP spoke page at https://github.com/LSantha/jnode_ai/wiki/ARP covering:

• ARP cache (ARPCache, ARPCacheEntry) with 10-minute TTL
• Packet processing (ARPHeader, ARPOperation enum: ARP_REQUEST, ARP_REPLY, RARP_REQUEST, RARP_REPLY)
• getHardwareAddress() lookup loop with 1500ms request throttling
• Bug: ARPOperation.getType() always returns the first enum value

Updated index.md (all 4 tables), Glossary.md (ARP cache entry), and linked from [[Network-Stack]]. Issue #99 closed.

opencode session  |  github run

[LSantha]

/oc Please proceed with this task.

[opencode-agent]

The task is already complete. The wiki was updated in a prior session with:

• .wiki/ARP.md - Full documentation covering ARP cache (10-min TTL), packet processing, getHardwareAddress(), and the getType() bug
• .wiki/index.md - Updated in all 4 sections (Pages Table, Concepts→Pages, Source Path→Pages, Task Routing)
• .wiki/Glossary.md - Added "ARP cache" definition

No further action needed.

opencode session  |  github run