|SUCCESS| net/mlx5: fix mini CQE compression format log

[dpdklab at iol.unh.edu]

Test-Label: ai-code-review
Test-Status: SUCCESS
https://dpdk.org/patch/171821

_AI Code Review_

=== Patch Review: series.patch (via Claude) ===
Review date: 2026-10-22

# DPDK Patch Review

## Analysis

This patch modifies a debug log message in the mlx5 PMD to improve diagnostic information about mini CQE compression format. The changes are minimal and focused on enhancing observability.

### Changes Made
1. Added Rx queue index (`rxq->idx`) to the log message
2. Changed format specifier from `%d` to `%u` for the format value
3. Expanded the log to show both the actually-used format (`rxq_data->mcqe_format`) and the configured format (`priv->config.cqe_comp_fmt`)

### Review Against Guidelines

**Correctness:**
- No resource allocations, deallocations, or control flow changes
- No potential for use-after-free, leaks, or race conditions
- The accessed fields (`port_id`, `rxq->idx`, `rxq_data->mcqe_format`, `priv->config.cqe_comp_fmt`) are all within structures that are valid at this point in the code

**Code Style:**
- Line length after the change is approximately 105 characters, which slightly exceeds the 100-character guideline but is within acceptable tolerance for log messages
- Format specifier change from `%d` to `%u` is appropriate given that format values are unsigned
- String formatting follows DPDK conventions

**API and Documentation:**
- This is an internal debugging change only
- No public API modifications
- No ABI changes
- The Fixes tag and stable backport tag are appropriate for a logging improvement

**Process:**
- Properly tagged with `Fixes:` and `Cc: stable at dpdk.org`
- Has maintainer acknowledgment (`Acked-by:`)

### Observations

The patch improves debuggability by logging the actual format in use alongside the configured format, which can help diagnose cases where hardware capabilities differ from configuration. The addition of the queue index makes it easier to correlate log messages with specific queue operations.

No issues found.

Review-Result: CLEAN