net_mana: adding test of RX CQE error handling

[erfrimod]

Adding a test to validate that net_mana handles RX CQE errors. QueueStats rx_errors should be incremented. QueueStates rx_packets should not increase. net_mana already has a test to validate proper TX CQE error handline. Ex: test_lso_segment_coalescing_only_header()

Adding a test_hooks feature to GDMA to allow the new test to modify BNic emulator behavior to return CQE_RX_ERR_DISABLED_QUEUE.

[Copilot]

Pull request overview

Adds coverage to ensure net_mana treats RX completion errors as errors (increments rx_errors without incrementing rx_packets) by introducing a GDMA BNIC-emulator test hook to inject a specific RX CQE error type.

Changes:

• Added a new net_mana async test validating RX CQE error handling behavior and resulting queue stats.
• Introduced a test_hooks feature in gdma and enabled it for net_mana dev-dependencies.
• Extended GDMA BNIC definitions/emulator to support and inject CQE_RX_ERR_DISABLED_QUEUE under the test_hooks feature.

Reviewed changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
vm/devices/net/net_mana/src/test.rs	Adds test_rx_error_handling to verify RX error CQE impacts on QueueStats.
vm/devices/net/net_mana/Cargo.toml	Enables gdma test_hooks feature for tests.
vm/devices/net/gdma_defs/src/bnic.rs	Adds the CQE_RX_ERR_DISABLED_QUEUE CQE type constant.
vm/devices/net/gdma/src/bnic.rs	Injects an RX error CQE via a feature-gated test hook in the BNIC emulator.
vm/devices/net/gdma/Cargo.toml	Defines the test_hooks crate feature (default off).