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Add ipvtap link support

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ipvtap is a similar link type as ipvlan with tap interface.

This patch enables it just like macvtap.

Signed-off-by: Wei Yang <richard.weiyang@gmail.com>
This commit is contained in:
Wei Yang
2020-11-23 14:49:14 +08:00
committed by Alessandro Boch
parent 66ddd91f7d
commit aa68aabe05
2 changed files with 33 additions and 0 deletions
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13
link.go
View File

@@ -456,6 +456,19 @@ func (ipvlan *IPVlan) Type() string {
return "ipvlan" return "ipvlan"
} }
// IPVtap - IPVtap is a virtual interfaces based on ipvlan
type IPVtap struct {
IPVlan
}
func (ipvtap *IPVtap) Attrs() *LinkAttrs {
return &ipvtap.LinkAttrs
}
func (ipvtap IPVtap) Type() string {
return "ipvtap"
}
// VlanProtocol type // VlanProtocol type
type VlanProtocol int type VlanProtocol int

20
link_linux.go
View File

@@ -1409,6 +1409,10 @@ func (h *Handle) linkModify(link Link, flags int) error {
data := linkInfo.AddRtAttr(nl.IFLA_INFO_DATA, nil) data := linkInfo.AddRtAttr(nl.IFLA_INFO_DATA, nil)
data.AddRtAttr(nl.IFLA_IPVLAN_MODE, nl.Uint16Attr(uint16(link.Mode))) data.AddRtAttr(nl.IFLA_IPVLAN_MODE, nl.Uint16Attr(uint16(link.Mode)))
data.AddRtAttr(nl.IFLA_IPVLAN_FLAG, nl.Uint16Attr(uint16(link.Flag))) data.AddRtAttr(nl.IFLA_IPVLAN_FLAG, nl.Uint16Attr(uint16(link.Flag)))
case *IPVtap:
data := linkInfo.AddRtAttr(nl.IFLA_INFO_DATA, nil)
data.AddRtAttr(nl.IFLA_IPVLAN_MODE, nl.Uint16Attr(uint16(link.Mode)))
data.AddRtAttr(nl.IFLA_IPVLAN_FLAG, nl.Uint16Attr(uint16(link.Flag)))
case *Macvlan: case *Macvlan:
if link.Mode != MACVLAN_MODE_DEFAULT { if link.Mode != MACVLAN_MODE_DEFAULT {
data := linkInfo.AddRtAttr(nl.IFLA_INFO_DATA, nil) data := linkInfo.AddRtAttr(nl.IFLA_INFO_DATA, nil)
@@ -1680,6 +1684,8 @@ func LinkDeserialize(hdr *unix.NlMsghdr, m []byte) (Link, error) {
link = &Bond{} link = &Bond{}
case "ipvlan": case "ipvlan":
link = &IPVlan{} link = &IPVlan{}
case "ipvtap":
link = &IPVtap{}
case "macvlan": case "macvlan":
link = &Macvlan{} link = &Macvlan{}
case "macvtap": case "macvtap":
@@ -1731,6 +1737,8 @@ func LinkDeserialize(hdr *unix.NlMsghdr, m []byte) (Link, error) {
parseBondData(link, data) parseBondData(link, data)
case "ipvlan": case "ipvlan":
parseIPVlanData(link, data) parseIPVlanData(link, data)
case "ipvtap":
parseIPVtapData(link, data)
case "macvlan": case "macvlan":
parseMacvlanData(link, data) parseMacvlanData(link, data)
case "macvtap": case "macvtap":
@@ -2416,6 +2424,18 @@ func parseIPVlanData(link Link, data []syscall.NetlinkRouteAttr) {
} }
} }
func parseIPVtapData(link Link, data []syscall.NetlinkRouteAttr) {
ipv := link.(*IPVtap)
for _, datum := range data {
switch datum.Attr.Type {
case nl.IFLA_IPVLAN_MODE:
ipv.Mode = IPVlanMode(native.Uint32(datum.Value[0:4]))
case nl.IFLA_IPVLAN_FLAG:
ipv.Flag = IPVlanFlag(native.Uint32(datum.Value[0:4]))
}
}
}
func parseMacvtapData(link Link, data []syscall.NetlinkRouteAttr) { func parseMacvtapData(link Link, data []syscall.NetlinkRouteAttr) {
macv := link.(*Macvtap) macv := link.(*Macvtap)
parseMacvlanData(&macv.Macvlan, data) parseMacvlanData(&macv.Macvlan, data)