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Add LinkModify support

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Signed-off-by: Daniel Gollub <dgollub@att.com>
This commit is contained in:
Daniel Gollub 2020-04-30 13:12:23 +02:00 committed by Alessandro Boch
parent 564132f787
commit 12f2829c35
2 changed files with 40 additions and 0 deletions
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9
link_linux.go
View File

@ -1058,6 +1058,10 @@ func (h *Handle) LinkAdd(link Link) error {
return h.linkModify(link, unix.NLM_F_CREATE|unix.NLM_F_EXCL|unix.NLM_F_ACK)
}
func (h *Handle) LinkModify(link Link) error {
return h.linkModify(link, unix.NLM_F_REQUEST|unix.NLM_F_ACK)
}
func (h *Handle) linkModify(link Link, flags int) error {
// TODO: support extra data for macvlan
base := link.Attrs()
@ -1203,6 +1207,11 @@ func (h *Handle) linkModify(link Link, flags int) error {
nameData := nl.NewRtAttr(unix.IFLA_IFNAME, nl.ZeroTerminated(base.Name))
req.AddData(nameData)
if base.Alias != "" {
alias := nl.NewRtAttr(unix.IFLA_IFALIAS, []byte(base.Alias))
req.AddData(alias)
}
if base.MTU > 0 {
mtu := nl.NewRtAttr(unix.IFLA_MTU, nl.Uint32Attr(uint32(base.MTU)))
req.AddData(mtu)

31
link_test.go
View File

@ -523,6 +523,37 @@ func TestLinkAddDelDummyWithGroup(t *testing.T) {
testLinkAddDel(t, &Dummy{LinkAttrs{Name: "foo", Group: 42}})
}
func TestLinkModify(t *testing.T) {
tearDown := setUpNetlinkTest(t)
defer tearDown()
linkName := "foo"
originalMTU := 1500
updatedMTU := 1442
link := &Dummy{LinkAttrs{Name: linkName, MTU: originalMTU}}
base := link.Attrs()
if err := LinkAdd(link); err != nil {
t.Fatal(err)
}
link.MTU = updatedMTU
if err := pkgHandle.LinkModify(link); err != nil {
t.Fatal(err)
}
result, err := LinkByName(linkName)
if err != nil {
t.Fatal(err)
}
rBase := result.Attrs()
if rBase.MTU != updatedMTU {
t.Fatalf("MTU is %d, should be %d", rBase.MTU, base.MTU)
}
}
func TestLinkAddDelIfb(t *testing.T) {
tearDown := setUpNetlinkTest(t)
defer tearDown()