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>main
Brad Fitzpatrick
7 months ago
committed by
Brad Fitzpatrick
parent
b3ae1cb0cc
commit
f715ee2be9
@ -0,0 +1,75 @@ |
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// Copyright (c) Tailscale Inc & AUTHORS
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// SPDX-License-Identifier: BSD-3-Clause
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//go:build !ts_omit_netstack
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package main |
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import ( |
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"context" |
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"expvar" |
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"net" |
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"net/netip" |
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"tailscale.com/tsd" |
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"tailscale.com/types/logger" |
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"tailscale.com/wgengine/netstack" |
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) |
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func init() { |
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hookNewNetstack.Set(newNetstack) |
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} |
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func newNetstack(logf logger.Logf, sys *tsd.System, onlyNetstack bool) (tsd.NetstackImpl, error) { |
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ns, err := netstack.Create(logf, |
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sys.Tun.Get(), |
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sys.Engine.Get(), |
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sys.MagicSock.Get(), |
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sys.Dialer.Get(), |
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sys.DNSManager.Get(), |
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sys.ProxyMapper(), |
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) |
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if err != nil { |
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return nil, err |
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} |
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// Only register debug info if we have a debug mux
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if debugMux != nil { |
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expvar.Publish("netstack", ns.ExpVar()) |
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} |
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sys.Set(ns) |
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ns.ProcessLocalIPs = onlyNetstack |
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ns.ProcessSubnets = onlyNetstack || handleSubnetsInNetstack() |
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dialer := sys.Dialer.Get() // must be set by caller already
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if onlyNetstack { |
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e := sys.Engine.Get() |
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dialer.UseNetstackForIP = func(ip netip.Addr) bool { |
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_, ok := e.PeerForIP(ip) |
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return ok |
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} |
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dialer.NetstackDialTCP = func(ctx context.Context, dst netip.AddrPort) (net.Conn, error) { |
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// Note: don't just return ns.DialContextTCP or we'll return
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// *gonet.TCPConn(nil) instead of a nil interface which trips up
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// callers.
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tcpConn, err := ns.DialContextTCP(ctx, dst) |
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if err != nil { |
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return nil, err |
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} |
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return tcpConn, nil |
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} |
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dialer.NetstackDialUDP = func(ctx context.Context, dst netip.AddrPort) (net.Conn, error) { |
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// Note: don't just return ns.DialContextUDP or we'll return
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// *gonet.UDPConn(nil) instead of a nil interface which trips up
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// callers.
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udpConn, err := ns.DialContextUDP(ctx, dst) |
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if err != nil { |
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return nil, err |
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} |
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return udpConn, nil |
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} |
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} |
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return ns, nil |
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} |
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@ -0,0 +1,10 @@ |
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// Copyright (c) Tailscale Inc & AUTHORS
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// SPDX-License-Identifier: BSD-3-Clause
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//go:build ts_omit_netstack
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package gro |
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func RXChecksumOffload(any) any { |
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panic("unreachable") |
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} |
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