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Add route get iif option #623

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merged 1 commit into from
May 8, 2021
Merged

Add route get iif option #623

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16 changes: 16 additions & 0 deletions route_linux.go
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Original file line number Diff line number Diff line change
Expand Up @@ -1150,6 +1150,7 @@ func deserializeRoute(m []byte) (Route, error) {
// RouteGetOptions contains a set of options to use with
// RouteGetWithOptions
type RouteGetOptions struct {
Iif string
VrfName string
SrcAddr net.IP
}
Expand Down Expand Up @@ -1207,6 +1208,21 @@ func (h *Handle) RouteGetWithOptions(destination net.IP, options *RouteGetOption
req.AddData(nl.NewRtAttr(unix.RTA_OIF, b))
}

if len(options.Iif) > 0 {
link, err := LinkByName(options.Iif)
if err != nil {
return nil, err
}

var (
b = make([]byte, 4)
native = nl.NativeEndian()
)
native.PutUint32(b, uint32(link.Attrs().Index))

req.AddData(nl.NewRtAttr(unix.RTA_IIF, b))
}

if options.SrcAddr != nil {
var srcAddr []byte
if family == FAMILY_V4 {
Expand Down