net_mana: downgrading invalid OOB traces from ERROR to WARN (#2163)

[erfrimod]

Not a clean cherry-pick due to changes in tracing WQE handling in net_mana/src/lib.rs

Backport of #2163

[Copilot]

Pull Request Overview

This PR downgrades invalid out-of-band (OOB) TX completion traces from ERROR to WARN level in the MANA network device driver. The change improves handling of invalid OOB metadata errors by treating them as non-critical warnings since they typically occur due to encapsulation and only affect individual packets.

• Adds CQE_TX_INVALID_OOB error type handling with WARN-level tracing instead of ERROR
• Introduces dynamic tracing level support with new event_ratelimited macros
• Adds comprehensive queue statistics reporting and testing infrastructure

Reviewed Changes

Copilot reviewed 7 out of 8 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
vm/devices/net/net_mana/src/lib.rs	Main changes - adds CQE_TX_INVALID_OOB handling, implements BackendQueueStats trait, refactors tracing functions, and adds comprehensive test coverage
vm/devices/net/net_backend/src/lib.rs	Defines BackendQueueStats trait for standardized queue statistics reporting
vm/devices/net/gdma/src/bnic.rs	Adds LSO validation logic with error completion posting for improved packet handling
support/tracelimit/src/lib.rs	Implements dynamic tracing level macros for runtime log level determination
vm/devices/net/net_mana/Cargo.toml	Adds inspect_counters dependency for statistics support
vm/devices/net/net_backend/Cargo.toml	Adds inspect_counters dependency
vm/devices/net/gdma/Cargo.toml	Adds tracelimit dependency for error logging