Commit Graph

3 Commits (0d76d7d21c951872433de708839025c8dfb304b3)

Author SHA1 Message Date
Jordan Whited a93173b56a
cmd/xdpderper,derp/xdp: implement mode that drops STUN packets (#12527)
This is useful during maintenance as a method for shedding home client
load.

Updates tailscale/corp#20689

Signed-off-by: Jordan Whited <jordan@tailscale.com>
4 months ago
Jordan Whited 315f3d5df1
derp/xdp: fix handling of zero value UDP checksums (#12510)
validate_udp_checksum was previously indeterminate (not zero) at
declaration, and IPv4 zero value UDP checksum packets were being passed
to the kernel.

Updates tailscale/corp#20689

Signed-off-by: Jordan Whited <jordan@tailscale.com>
4 months ago
Jordan Whited 65888d95c9
derp/xdp,cmd/xdpderper: initial skeleton (#12390)
This commit introduces a userspace program for managing an experimental
eBPF XDP STUN server program. derp/xdp contains the eBPF pseudo-C along
with a Go pkg for loading it and exporting its metrics.
cmd/xdpderper is a package main user of derp/xdp.

Updates tailscale/corp#20689

Signed-off-by: Jordan Whited <jordan@tailscale.com>
5 months ago