mirror of https://github.com/tailscale/tailscale/
cmd/tailscaled: start implementing ts_omit_netstack
Baby steps. This permits building without much of gvisor, but not all of it. Updates #17283 Change-Id: I8433146e259918cc901fe86b4ea29be22075b32c Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>pull/17296/head
Brad Fitzpatrick
2 months ago
committed by
Brad Fitzpatrick
parent
b3ae1cb0cc
commit
f715ee2be9
@ -0,0 +1,75 @@
|
||||
// Copyright (c) Tailscale Inc & AUTHORS
|
||||
// SPDX-License-Identifier: BSD-3-Clause
|
||||
|
||||
//go:build !ts_omit_netstack
|
||||
|
||||
package main
|
||||
|
||||
import (
|
||||
"context"
|
||||
"expvar"
|
||||
"net"
|
||||
"net/netip"
|
||||
|
||||
"tailscale.com/tsd"
|
||||
"tailscale.com/types/logger"
|
||||
"tailscale.com/wgengine/netstack"
|
||||
)
|
||||
|
||||
func init() {
|
||||
hookNewNetstack.Set(newNetstack)
|
||||
}
|
||||
|
||||
func newNetstack(logf logger.Logf, sys *tsd.System, onlyNetstack bool) (tsd.NetstackImpl, error) {
|
||||
ns, err := netstack.Create(logf,
|
||||
sys.Tun.Get(),
|
||||
sys.Engine.Get(),
|
||||
sys.MagicSock.Get(),
|
||||
sys.Dialer.Get(),
|
||||
sys.DNSManager.Get(),
|
||||
sys.ProxyMapper(),
|
||||
)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
// Only register debug info if we have a debug mux
|
||||
if debugMux != nil {
|
||||
expvar.Publish("netstack", ns.ExpVar())
|
||||
}
|
||||
|
||||
sys.Set(ns)
|
||||
ns.ProcessLocalIPs = onlyNetstack
|
||||
ns.ProcessSubnets = onlyNetstack || handleSubnetsInNetstack()
|
||||
|
||||
dialer := sys.Dialer.Get() // must be set by caller already
|
||||
|
||||
if onlyNetstack {
|
||||
e := sys.Engine.Get()
|
||||
dialer.UseNetstackForIP = func(ip netip.Addr) bool {
|
||||
_, ok := e.PeerForIP(ip)
|
||||
return ok
|
||||
}
|
||||
dialer.NetstackDialTCP = func(ctx context.Context, dst netip.AddrPort) (net.Conn, error) {
|
||||
// Note: don't just return ns.DialContextTCP or we'll return
|
||||
// *gonet.TCPConn(nil) instead of a nil interface which trips up
|
||||
// callers.
|
||||
tcpConn, err := ns.DialContextTCP(ctx, dst)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
return tcpConn, nil
|
||||
}
|
||||
dialer.NetstackDialUDP = func(ctx context.Context, dst netip.AddrPort) (net.Conn, error) {
|
||||
// Note: don't just return ns.DialContextUDP or we'll return
|
||||
// *gonet.UDPConn(nil) instead of a nil interface which trips up
|
||||
// callers.
|
||||
udpConn, err := ns.DialContextUDP(ctx, dst)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
return udpConn, nil
|
||||
}
|
||||
}
|
||||
|
||||
return ns, nil
|
||||
}
|
||||
@ -0,0 +1,10 @@
|
||||
// Copyright (c) Tailscale Inc & AUTHORS
|
||||
// SPDX-License-Identifier: BSD-3-Clause
|
||||
|
||||
//go:build ts_omit_netstack
|
||||
|
||||
package gro
|
||||
|
||||
func RXChecksumOffload(any) any {
|
||||
panic("unreachable")
|
||||
}
|
||||
Loading…
Reference in New Issue