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xdp
5 posts64 BFD sessions at 10ms saturate FRR bfdd's core; XDP handles it at 0 flaps
FRR's bfdd saturates one core at 64 BFD sessions while an XDP fast path carries the same load at 751ns/packet with zero flaps; three FRR bugs merged upstream.
XDP BFD Integrates with Stock FRR, Eliminates Flaps Under Stress
XDP-based BFD now integrates with stock FRR bfdd, cutting flaps to zero under stress and uncovering upstream FRR and kernel bugs along the way.
bfdd vs XDP-based BFD Fast Path Under CPU Stress: 44 vs 0 Flaps
Under CPU stress, FRR's bfdd flapped 44 times in 120 seconds while an XDP-based BFD fast path stayed at zero flaps, matching line-card-level reliability.
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commitbrief.comPFL Reimagines OpenBSD's pf Firewall as a Linux eBPF/XDP Dataplane
pfSense's creator built PFL, porting OpenBSD's pf firewall language onto Linux XDP. Here's how stateful filtering and NAT survive the eBPF verifier's strict constraints.
Differential Testing Exposes Native vs Generic XDP Behavior Gaps
An open-source differential harness compares native vs generic XDP frame bytes and verdicts, with a reproducible virtio/veth baseline on Linux 6.8.