Add route get iif option

vishvananda · Mar 29, 2021 · 666a814 · 666a814
1 parent 0a32cff
commit 666a814
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Showing 3 changed files with 22 additions and 2 deletions.
diff --git a/go.mod b/go.mod
@@ -3,6 +3,6 @@ module github.com/vishvananda/netlink
 go 1.12
 
 require (
-	github.com/vishvananda/netns v0.0.0-20200728191858-db3c7e526aae
-	golang.org/x/sys v0.0.0-20200728102440-3e129f6d46b1
+	github.com/vishvananda/netns v0.0.0-20210104183010-2eb08e3e575f
+	golang.org/x/sys v0.0.0-20210308170721-88b6017d0656
 )
diff --git a/go.sum b/go.sum
@@ -1,6 +1,10 @@
 github.com/vishvananda/netns v0.0.0-20200728191858-db3c7e526aae h1:4hwBBUfQCFe3Cym0ZtKyq7L16eZUtYKs+BaHDN6mAns=
 github.com/vishvananda/netns v0.0.0-20200728191858-db3c7e526aae/go.mod h1:DD4vA1DwXk04H54A1oHXtwZmA0grkVMdPxx/VGLCah0=
+github.com/vishvananda/netns v0.0.0-20210104183010-2eb08e3e575f h1:p4VB7kIXpOQvVn1ZaTIVp+3vuYAXFe3OJEvjbUYJLaA=
+github.com/vishvananda/netns v0.0.0-20210104183010-2eb08e3e575f/go.mod h1:DD4vA1DwXk04H54A1oHXtwZmA0grkVMdPxx/VGLCah0=
 golang.org/x/sys v0.0.0-20200217220822-9197077df867 h1:JoRuNIf+rpHl+VhScRQQvzbHed86tKkqwPMV34T8myw=
 golang.org/x/sys v0.0.0-20200217220822-9197077df867/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200728102440-3e129f6d46b1 h1:sIky/MyNRSHTrdxfsiUSS4WIAMvInbeXljJz+jDjeYE=
 golang.org/x/sys v0.0.0-20200728102440-3e129f6d46b1/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20210308170721-88b6017d0656 h1:FuBaiPCiXkq4v+JY5JEGPU/HwEZwpVyDbu/KBz9fU+4=
+golang.org/x/sys v0.0.0-20210308170721-88b6017d0656/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
diff --git a/route_linux.go b/route_linux.go
@@ -1151,6 +1151,7 @@ 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
 }
@@ -1208,6 +1209,21 @@ 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 {