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go.mod,wgengine/netstack: use cubic congestion control, bump gvisor

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Cubic performs better than Reno in higher BDP scenarios, and enables the
use of the hystart++ implementation contributed by Coder. This improves
throughput on higher BDP links with a much faster ramp.

gVisor is bumped as well for some fixes related to send queue processing
and RTT tracking.

Updates #9707
Updates #10408
Updates #12393
Updates tailscale/corp#24483
Updates tailscale/corp#25169

Signed-off-by: James Tucker <james@tailscale.com>
This commit is contained in:
James Tucker
2025-02-06 10:45:45 -08:00
committed by James Tucker
parent 4903d6c80b
commit e113b106a6
5 changed files with 10 additions and 5 deletions
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5
wgengine/netstack/netstack.go
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@@ -326,6 +326,11 @@ func Create(logf logger.Logf, tundev *tstun.Wrapper, e wgengine.Engine, mc *magi
if tcpipErr != nil {
return nil, fmt.Errorf("could not disable TCP RACK: %v", tcpipErr)
}
cubicOpt := tcpip.CongestionControlOption("cubic")
tcpipErr = ipstack.SetTransportProtocolOption(tcp.ProtocolNumber, &cubicOpt)
if tcpipErr != nil {
return nil, fmt.Errorf("could not set cubic congestion control: %v", tcpipErr)
}
err := setTCPBufSizes(ipstack)
if err != nil {
return nil, err