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Merge pull request #504 from neilalexander/netlink

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Use new netlink library (fixes #493)
This commit is contained in:
Neil Alexander 2019-08-14 19:59:30 +01:00 committed by GitHub
commit 2cec5bf108
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3 changed files with 12 additions and 24 deletions
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2
go.mod
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@ -8,6 +8,8 @@ require (
github.com/kardianos/minwinsvc v0.0.0-20151122163309-cad6b2b879b0
github.com/mitchellh/mapstructure v1.1.2
github.com/songgao/packets v0.0.0-20160404182456-549a10cd4091
github.com/vishvananda/netlink v1.0.0
github.com/vishvananda/netns v0.0.0-20190625233234-7109fa855b0f // indirect
github.com/yggdrasil-network/water v0.0.0-20190812103929-c83fe40250f8
golang.org/x/crypto v0.0.0-20190701094942-4def268fd1a4
golang.org/x/net v0.0.0-20190724013045-ca1201d0de80

4
go.sum
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@ -12,6 +12,10 @@ github.com/mitchellh/mapstructure v1.1.2 h1:fmNYVwqnSfB9mZU6OS2O6GsXM+wcskZDuKQz
github.com/mitchellh/mapstructure v1.1.2/go.mod h1:FVVH3fgwuzCH5S8UJGiWEs2h04kUh9fWfEaFds41c1Y=
github.com/songgao/packets v0.0.0-20160404182456-549a10cd4091 h1:1zN6ImoqhSJhN8hGXFaJlSC8msLmIbX8bFqOfWLKw0w=
github.com/songgao/packets v0.0.0-20160404182456-549a10cd4091/go.mod h1:N20Z5Y8oye9a7HmytmZ+tr8Q2vlP0tAHP13kTHzwvQY=
github.com/vishvananda/netlink v1.0.0 h1:bqNY2lgheFIu1meHUFSH3d7vG93AFyqg3oGbJCOJgSM=
github.com/vishvananda/netlink v1.0.0/go.mod h1:+SR5DhBJrl6ZM7CoCKvpw5BKroDKQ+PJqOg65H/2ktk=
github.com/vishvananda/netns v0.0.0-20190625233234-7109fa855b0f h1:nBX3nTcmxEtHSERBJaIo1Qa26VwRaopnZmfDQUXsF4I=
github.com/vishvananda/netns v0.0.0-20190625233234-7109fa855b0f/go.mod h1:ZjcWmFBXmLKZu9Nxj3WKYEafiSqer2rnvPr0en9UNpI=
github.com/yggdrasil-network/water v0.0.0-20180615095340-f732c88f34ae h1:MYCANF1kehCG6x6G+/9txLfq6n3lS5Vp0Mxn1hdiBAc=
github.com/yggdrasil-network/water v0.0.0-20180615095340-f732c88f34ae/go.mod h1:R0SBCsugm+Sf1katgTb2t7GXMm+nRIv43tM4VDZbaOs=
github.com/yggdrasil-network/water v0.0.0-20190719211521-a76871ea954b/go.mod h1:R0SBCsugm+Sf1katgTb2t7GXMm+nRIv43tM4VDZbaOs=

30
src/tuntap/tun_linux.go
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@ -5,11 +5,7 @@ package tuntap
// The linux platform specific tun parts
import (
"errors"
"fmt"
"net"
"github.com/docker/libcontainer/netlink"
"github.com/vishvananda/netlink"
water "github.com/yggdrasil-network/water"
)
@ -51,35 +47,21 @@ func (tun *TunAdapter) setup(ifname string, iftapmode bool, addr string, mtu int
// to exist on the system, but this will fail if Netlink is not present in the
// kernel (it nearly always is).
func (tun *TunAdapter) setupAddress(addr string) error {
// Set address
var netIF *net.Interface
ifces, err := net.Interfaces()
nladdr, err := netlink.ParseAddr(addr)
if err != nil {
return err
}
for _, ifce := range ifces {
if ifce.Name == tun.iface.Name() {
var newIF = ifce
netIF = &newIF // Don't point inside ifces, it's apparently unsafe?...
}
}
if netIF == nil {
return errors.New(fmt.Sprintf("Failed to find interface: %s", tun.iface.Name()))
}
ip, ipNet, err := net.ParseCIDR(addr)
nlintf, err := netlink.LinkByName(tun.iface.Name())
if err != nil {
return err
}
err = netlink.NetworkLinkAddIp(netIF, ip, ipNet)
if err != nil {
if err := netlink.AddrAdd(nlintf, nladdr); err != nil {
return err
}
err = netlink.NetworkSetMTU(netIF, tun.mtu)
if err != nil {
if err := netlink.LinkSetMTU(nlintf, tun.mtu); err != nil {
return err
}
netlink.NetworkLinkUp(netIF)
if err != nil {
if err := netlink.LinkSetUp(nlintf); err != nil {
return err
}
return nil