Add 10 Phase 6 tests for the AVTP audio data path:
- IEC61883 and AAF packet structure layout validation
- 802.1Q frame header construction
- PDU size calculations for various audio configurations
- Ringbuffer audio data round-trip integrity
- Ringbuffer wrap-around with multiple PDU-sized writes
- IEC61883 receive simulation (packet → ringbuffer)
- IEC61883 transmit PDU construction and field verification
- Ringbuffer overrun detection
- Sequence number and DBC counter wrapping
These tests validate the AVTP packet formats and audio data path
logic without requiring hardware, AF_PACKET sockets, or CLOCK_TAI.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Add 12 Phase 5 tests for the AECP/AEM entity model:
- READ_DESCRIPTOR for existing and non-existent descriptors
- AECP packet filtering (wrong EtherType, wrong subtype)
- Unsupported AECP message types (ADDRESS_ACCESS, etc.)
- Unimplemented AEM commands (REBOOT, etc.)
- ACQUIRE_ENTITY and LOCK_ENTITY for legacy mode
- Milan ENTITY_AVAILABLE, LOCK_ENTITY (lock/contention/unlock)
- Milan LOCK_ENTITY for non-entity descriptors
- Milan ACQUIRE_ENTITY returns NOT_SUPPORTED
- Milan READ_DESCRIPTOR
Also adds Milan test server helper with properly sized entity
descriptor for lock state, and AECP/AEM packet builder utility.
Updates avb-bugs.md with 3 new bugs found (bugs #6-#8).
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Add a test suite for the AVB (Audio Video Bridging) protocol stack that
runs entirely in software, requiring no hardware, root privileges, or
running PipeWire daemon.
The loopback transport (avb-transport-loopback.h) replaces raw AF_PACKET
sockets with in-memory packet capture, using a synthetic MAC address and
eventfd for protocol handlers that need a valid fd.
Test utilities (test-avb-utils.h) provide helpers for creating test
servers, injecting packets, advancing time, and building ADP packets.
Tests cover:
- ADP entity available/departing/discover/timeout
- MRP attribute lifecycle (create, begin, join)
- Milan v1.2 mode server creation
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
