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Revert "wgengine/netstack: update gvisor to remove 64-bit only limitation"

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Breaks our corp repo due to gRPC dependency hell.

This reverts commit d42f8b7f9a.
This commit is contained in:
David Anderson
2021-03-16 15:36:06 -07:00
parent e0f2796b43
commit 84aba349d9
5 changed files with 96 additions and 230 deletions
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7
wgengine/netstack/netstack.go
View File

@@ -2,6 +2,9 @@
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// netstack doesn't build on 32-bit machines (https://github.com/google/gvisor/issues/5241)
// +build amd64 arm64 ppc64le riscv64 s390x
// Package netstack wires up gVisor's netstack into Tailscale.
package netstack
@@ -190,7 +193,7 @@ func (ns *Impl) updateIPs(nm *netmap.NetworkMap) {
}
}
for ip := range ipsToBeAdded {
var err tcpip.Error
var err *tcpip.Error
if ip.To4() == "" {
err = ns.ipstack.AddAddress(nicID, ipv6.ProtocolNumber, ip)
} else {
@@ -285,7 +288,7 @@ func (ns *Impl) injectOutbound() {
full := make([]byte, 0, pkt.Size())
full = append(full, hdrNetwork.View()...)
full = append(full, hdrTransport.View()...)
full = append(full, pkt.Data().AsRange().AsView()...)
full = append(full, pkt.Data.ToView()...)
if debugNetstack {
ns.logf("[v2] packet Write out: % x", full)
}

37
wgengine/netstack/netstack_32bit.go Normal file
View File

@@ -0,0 +1,37 @@
// Copyright (c) 2020 Tailscale Inc & AUTHORS All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// netstack doesn't build on 32-bit machines (https://github.com/google/gvisor/issues/5241)
// +build !amd64,!arm64,!ppc64le,!riscv64,!s390x
package netstack
import (
"context"
"errors"
"net"
"inet.af/netaddr"
"tailscale.com/types/logger"
"tailscale.com/types/netmap"
"tailscale.com/wgengine"
"tailscale.com/wgengine/magicsock"
"tailscale.com/wgengine/tstun"
)
type Impl struct{}
func (*Impl) Start() error { panic("noimpl") }
func (*Impl) DialContextTCP(ctx context.Context, addr string) (net.Conn, error) { panic("noimpl") }
type DNSMap map[string]netaddr.IP
func (m DNSMap) Resolve(ctx context.Context, addr string) (netaddr.IPPort, error) { panic("noimpl") }
func DNSMapFromNetworkMap(nm *netmap.NetworkMap) DNSMap { return nil }
func Create(logf logger.Logf, tundev *tstun.TUN, e wgengine.Engine, mc *magicsock.Conn) (*Impl, error) {
return nil, errors.New("netstack is not supported on 32-bit platforms for now; see https://github.com/google/gvisor/issues/5241")
}