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Add LinkSetHardwareAddr

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Signed-off-by: Dave Tucker <dave@dtucker.co.uk>
This commit is contained in:
Dave Tucker 2015-01-31 20:05:11 +00:00
parent 085dc47dcc
commit f9a4246807
2 changed files with 42 additions and 0 deletions
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21
link_linux.go
View File

@ -101,6 +101,27 @@ func LinkSetName(link Link, name string) error {
return err
}
// LinkSetHardwareAddr sets the hardware address of the link device.
// Equivalent to: `ip link set $link address $hwaddr`
func LinkSetHardwareAddr(link Link, hwaddr net.HardwareAddr) error {
base := link.Attrs()
ensureIndex(base)
req := nl.NewNetlinkRequest(syscall.RTM_SETLINK, syscall.NLM_F_ACK)
msg := nl.NewIfInfomsg(syscall.AF_UNSPEC)
msg.Type = syscall.RTM_SETLINK
msg.Flags = syscall.NLM_F_REQUEST
msg.Index = int32(base.Index)
msg.Change = nl.DEFAULT_CHANGE
req.AddData(msg)
data := nl.NewRtAttr(syscall.IFLA_ADDRESS, []byte(hwaddr))
req.AddData(data)
_, err := req.Execute(syscall.NETLINK_ROUTE, 0)
return err
}
// LinkSetMaster sets the master of the link device.
// Equivalent to: `ip link set $link master $master`
func LinkSetMaster(link Link, master *Bridge) error {

21
link_test.go
View File

@ -1,6 +1,8 @@
package netlink
import (
"bytes"
"net"
"testing"
"github.com/vishvananda/netns"
@ -437,4 +439,23 @@ func TestLinkSet(t *testing.T) {
if link.Attrs().MTU != 1400 {
t.Fatal("MTU not changed!")
}
addr, err := net.ParseMAC("00:12:34:56:78:AB")
if err != nil {
t.Fatal(err)
}
err = LinkSetHardwareAddr(link, addr)
if err != nil {
t.Fatal(err)
}
link, err = LinkByName("bar")
if err != nil {
t.Fatal(err)
}
if !bytes.Equal(link.Attrs().HardwareAddr, addr) {
t.Fatalf("hardware address not changed!")
}
}