consomme: improve tracing for TCP connections and DNS request handling

[damanm24]

Currently TCP traces do not include the four-tuple as part of the message body. This makes diagnosing TCP related issues difficult since it's impossible to associate tracing messages with the connection. DNS request handling has a similar issue, where requests do not have a unique id associated with them - making it difficult to track the request handling flow throughout consommé.

The changes in this PR should make it easier to debug issues in CI related to TCP and/or DNS.

[github-actions]

⚠️ Unsafe Code Detected

This PR modifies files containing unsafe Rust code. Extra scrutiny is required during review.

For more on why we check whole files, instead of just diffs, check out the Rustonomicon

[Copilot]

Pull request overview

This PR improves debuggability of net_consomme by enriching tracing for TCP connections (adding the 4-tuple) and by introducing a per-DNS-query identifier that can be propagated into backend tracing (notably on Windows), making it easier to correlate logs in CI.

Changes:

• Include TCP source/destination socket addresses in trace_tcp_packet output and add additional TCP/DNS-handler trace points.
• Refactor DnsFlow to store src/dst as SocketAddr (instead of IP+port fields), simplifying logging and call sites.
• Add a monotonically increasing query_id in DnsResolver and pass it into DNS backend implementations for correlation.

Reviewed changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
vm/devices/net/net_consomme/consomme/src/udp.rs	Switch UDP DNS flow tracking to SocketAddr and update response logging/packet construction accordingly.
vm/devices/net/net_consomme/consomme/src/tcp.rs	Add 4-tuple to TCP packet tracing and enrich TCP/DNS-handler traces with src/dst.
vm/devices/net/net_consomme/consomme/src/dns_resolver/mod.rs	Refactor DnsFlow to SocketAddr and add query_id generation/plumbing through the DnsBackend trait.
vm/devices/net/net_consomme/consomme/src/dns_resolver/unix/mod.rs	Thread query_id into the Unix DNS backend internal request dispatch.
vm/devices/net/net_consomme/consomme/src/dns_resolver/windows/mod.rs	Thread query_id into Windows DNS backend, add tracing, and rename slab key tracking for pending requests.
vm/devices/net/net_consomme/consomme/src/dns_resolver/dns_tcp.rs	Update TCP DNS handler tracing to include src/dst and adapt to the new backend query_id parameter.

[Copilot]

Pull request overview

Copilot reviewed 6 out of 6 changed files in this pull request and generated 2 comments.