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control/controlknobs,tailcfg,wgengine/magicsock: deprecate NodeAttrDisableMagicSockCryptoRouting (#16818)

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Peer Relay is dependent on crypto routing, therefore crypto routing is
now mandatory.

Updates tailscale/corp#20732
Updates tailscale/corp#31083

Signed-off-by: Jordan Whited <jordan@tailscale.com>
This commit is contained in:
Jordan Whited
2025-08-11 09:04:03 -07:00
committed by GitHub
parent 71d51eb8db
commit d122f0350e
3 changed files with 5 additions and 13 deletions
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6
wgengine/magicsock/magicsock.go
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@@ -1842,12 +1842,6 @@ func (c *Conn) receiveIP(b []byte, ipp netip.AddrPort, cache *epAddrEndpointCach
de, ok := c.peerMap.endpointForEpAddr(src)
c.mu.Unlock()
if !ok {
if c.controlKnobs != nil && c.controlKnobs.DisableCryptorouting.Load() {
// Note: UDP relay is dependent on cryptorouting enablement. We
// only update Geneve-encapsulated [epAddr]s in the [peerMap]
// via [lazyEndpoint].
return nil, 0, false, false
}
// TODO(jwhited): reuse [lazyEndpoint] across calls to receiveIP()
// for the same batch & [epAddr] src.
return &lazyEndpoint{c: c, src: src}, size, isGeneveEncap, true