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net/tstun: probe TCP GRO (#13376)

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Disable TCP & UDP GRO if the probe fails.

torvalds/linux@e269d79c7d broke virtio_net
TCP & UDP GRO causing GRO writes to return EINVAL. The bug was then
resolved later in
torvalds/linux@89add40066. The offending
commit was pulled into various LTS releases.

Updates #13041

Signed-off-by: Jordan Whited <jordan@tailscale.com>
This commit is contained in:
Jordan Whited
2024-09-05 09:59:31 -07:00
committed by GitHub
parent 7dcf65a10a
commit 7aa766ee65
7 changed files with 87 additions and 32 deletions
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3
net/tstun/tun.go
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@@ -53,9 +53,6 @@ func New(logf logger.Logf, tunName string) (tun.Device, string, error) {
dev.Close()
return nil, "", err
}
if err := setLinkFeatures(dev); err != nil {
logf("setting link features: %v", err)
}
if err := setLinkAttrs(dev); err != nil {
logf("setting link attributes: %v", err)
}