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Merge pull request #29 from Arceliar/netlink

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Linux: use netlink instead of ip
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Neil Alexander 2018-03-04 10:47:34 +00:00 committed by GitHub
commit a92e6c2588
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1 changed files with 27 additions and 18 deletions
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45
src/yggdrasil/tun_linux.go
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@ -3,12 +3,14 @@ package yggdrasil
// The linux platform specific tun parts
// It depends on iproute2 being installed to set things on the tun device
import "errors"
import "fmt"
import "os/exec"
import "strings"
import "net"
import water "github.com/neilalexander/water"
import "github.com/docker/libcontainer/netlink"
func getDefaults() tunDefaultParameters {
return tunDefaultParameters{
maximumIfMTU: 65535,
@ -39,26 +41,33 @@ func (tun *tunDevice) setup(ifname string, iftapmode bool, addr string, mtu int)
func (tun *tunDevice) setupAddress(addr string) error {
// Set address
cmd := exec.Command("ip", "-f", "inet6",
"addr", "add", addr,
"dev", tun.iface.Name())
tun.core.log.Printf("ip command: %v", strings.Join(cmd.Args, " "))
output, err := cmd.CombinedOutput()
var netIF *net.Interface
ifces, err := net.Interfaces()
if err != nil {
tun.core.log.Printf("Linux ip failed: %v.", err)
tun.core.log.Println(string(output))
return err
}
// Set MTU and bring device up
cmd = exec.Command("ip", "link", "set",
"dev", tun.iface.Name(),
"mtu", fmt.Sprintf("%d", tun.mtu),
"up")
tun.core.log.Printf("ip command: %v", strings.Join(cmd.Args, " "))
output, err = cmd.CombinedOutput()
for _, ifce := range ifces {
if ifce.Name == tun.iface.Name() {
netIF = &ifce
}
}
if netIF == nil {
return errors.New(fmt.Sprintf("Failed to find interface: %s", tun.iface.Name()))
}
ip, ipNet, err := net.ParseCIDR(addr)
if err != nil {
return err
}
err = netlink.NetworkLinkAddIp(netIF, ip, ipNet)
if err != nil {
return err
}
err = netlink.NetworkSetMTU(netIF, tun.mtu)
if err != nil {
return err
}
netlink.NetworkLinkUp(netIF)
if err != nil {
tun.core.log.Printf("Linux ip failed: %v.", err)
tun.core.log.Println(string(output))
return err
}
return nil