Description
Add per-interface statistics (rx/tx bytes, packets, errors, drops, missed) via netlink RTM_GETSTATS / IFLA_STATS64.
Acceptance criteria
- Retrieve per-interface stats via RTM_GETSTATS netlink message
- Expose IFLA_STATS64 counters : rx/tx bytes, packets, errors, drops, missed, multicast
- Stats accessible via Interface class
- Both polling and event-based update modes supported
Description
Add per-interface statistics (rx/tx bytes, packets, errors, drops, missed) via netlink RTM_GETSTATS / IFLA_STATS64.
Acceptance criteria