Red Bear OS
ff66b96266
observer: packet capture facility (tcpdump-like) via netcfg
Adds packet observer with ring buffer (256 packets default):
- Observer::capture(packet) hooks into forwarding/output paths
- AtomicBool enable/disable toggle (no capture overhead when off)
- capture/count: live stats (total captured, buffered, enabled)
- capture/read: drain hex dump of buffered packets
- capture/enable|disable: toggle capture on/off
Usage:
echo > /scheme/netcfg/capture/enable # start capture
cat /scheme/netcfg/capture/read # dump captured packets (hex)
cat /scheme/netcfg/capture/count # stats
echo > /scheme/netcfg/capture/disable # stop
Mirrors Linux AF_PACKET + tcpdump facility.