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Add support for IFLA_GSO_* 

IFLA_GSO_MAX_SIZE - maximum GSO segment size
IFLA_GSO_MAX_SEGS - maximum number of GSO segments

Signed-off-by: Andrei Vagin <avagin@google.com>
This commit is contained in:
Andrei Vagin 2019-03-12 12:34:31 -07:00 committed by Alessandro Boch
parent aa950f24b9
commit adb577d4a4
3 changed files with 46 additions and 0 deletions
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2
link.go
View File

@ -41,6 +41,8 @@ type LinkAttrs struct {
NetNsID int
NumTxQueues int
NumRxQueues int
GSOMaxSize uint32
GSOMaxSegs uint32
Vfs []VfInfo // virtual functions available on link
}

14
link_linux.go
View File

@ -1118,6 +1118,16 @@ func (h *Handle) linkModify(link Link, flags int) error {
req.AddData(rxqueues)
}
if base.GSOMaxSegs > 0 {
gsoAttr := nl.NewRtAttr(unix.IFLA_GSO_MAX_SEGS, nl.Uint32Attr(base.GSOMaxSegs))
req.AddData(gsoAttr)
}
if base.GSOMaxSize > 0 {
gsoAttr := nl.NewRtAttr(unix.IFLA_GSO_MAX_SIZE, nl.Uint32Attr(base.GSOMaxSize))
req.AddData(gsoAttr)
}
if base.Namespace != nil {
var attr *nl.RtAttr
switch ns := base.Namespace.(type) {
@ -1537,6 +1547,10 @@ func LinkDeserialize(hdr *unix.NlMsghdr, m []byte) (Link, error) {
base.OperState = LinkOperState(uint8(attr.Value[0]))
case unix.IFLA_LINK_NETNSID:
base.NetNsID = int(native.Uint32(attr.Value[0:4]))
case unix.IFLA_GSO_MAX_SIZE:
base.GSOMaxSize = native.Uint32(attr.Value[0:4])
case unix.IFLA_GSO_MAX_SEGS:
base.GSOMaxSegs = native.Uint32(attr.Value[0:4])
case unix.IFLA_VFINFO_LIST:
data, err := nl.ParseRouteAttr(attr.Value)
if err != nil {

30
link_test.go
View File

@ -694,6 +694,36 @@ func TestLinkAddVethWithZeroTxQLen(t *testing.T) {
}
}
func TestLinkAddDelDummyWithGSO(t *testing.T) {
const (
gsoMaxSegs = 16
gsoMaxSize = 1 << 14
)
minKernelRequired(t, 4, 16)
tearDown := setUpNetlinkTest(t)
defer tearDown()
dummy := &Dummy{LinkAttrs: LinkAttrs{Name: "foo", GSOMaxSize: gsoMaxSize, GSOMaxSegs: gsoMaxSegs}}
if err := LinkAdd(dummy); err != nil {
t.Fatal(err)
}
link, err := LinkByName("foo")
if err != nil {
t.Fatal(err)
}
dummy, ok := link.(*Dummy)
if !ok {
t.Fatalf("unexpected link type: %T", link)
}
if dummy.GSOMaxSize != gsoMaxSize {
t.Fatalf("GSOMaxSize is %d, should be %d", dummy.GSOMaxSize, gsoMaxSize)
}
if dummy.GSOMaxSegs != gsoMaxSegs {
t.Fatalf("GSOMaxSeg is %d, should be %d", dummy.GSOMaxSegs, gsoMaxSegs)
}
}
func TestLinkAddDummyWithTxQLen(t *testing.T) {
tearDown := setUpNetlinkTest(t)
defer tearDown()