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Certain device drivers (e.g. vxlan, geneve) do not properly handle coalesced UDP packets later in the stack, resulting in packet loss. Updates #11026 Signed-off-by: Jordan Whited <jordan@tailscale.com>
20 lines
365 B
Go
20 lines
365 B
Go
// Copyright (c) Tailscale Inc & AUTHORS
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// SPDX-License-Identifier: BSD-3-Clause
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package tstun
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import (
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"github.com/tailscale/wireguard-go/tun"
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"tailscale.com/envknob"
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)
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func setLinkFeatures(dev tun.Device) error {
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if envknob.Bool("TS_TUN_DISABLE_UDP_GRO") {
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linuxDev, ok := dev.(tun.LinuxDevice)
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if ok {
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linuxDev.DisableUDPGRO()
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}
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}
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return nil
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}
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