netlink/route_test.go

1341 lines
28 KiB
Go

// +build linux
package netlink
import (
"net"
"strconv"
"testing"
"time"
"github.com/vishvananda/netlink/nl"
"github.com/vishvananda/netns"
"golang.org/x/sys/unix"
)
func TestRouteAddDel(t *testing.T) {
tearDown := setUpNetlinkTest(t)
defer tearDown()
// get loopback interface
link, err := LinkByName("lo")
if err != nil {
t.Fatal(err)
}
// bring the interface up
if err := LinkSetUp(link); err != nil {
t.Fatal(err)
}
// add a gateway route
dst := &net.IPNet{
IP: net.IPv4(192, 168, 0, 0),
Mask: net.CIDRMask(24, 32),
}
ip := net.IPv4(127, 1, 1, 1)
route := Route{LinkIndex: link.Attrs().Index, Dst: dst, Src: ip}
if err := RouteAdd(&route); err != nil {
t.Fatal(err)
}
routes, err := RouteList(link, FAMILY_V4)
if err != nil {
t.Fatal(err)
}
if len(routes) != 1 {
t.Fatal("Route not added properly")
}
dstIP := net.IPv4(192, 168, 0, 42)
routeToDstIP, err := RouteGet(dstIP)
if err != nil {
t.Fatal(err)
}
if len(routeToDstIP) == 0 {
t.Fatal("Default route not present")
}
if err := RouteDel(&route); err != nil {
t.Fatal(err)
}
routes, err = RouteList(link, FAMILY_V4)
if err != nil {
t.Fatal(err)
}
if len(routes) != 0 {
t.Fatal("Route not removed properly")
}
}
func TestRoute6AddDel(t *testing.T) {
tearDown := setUpNetlinkTest(t)
defer tearDown()
// create dummy interface
// IPv6 route added to loopback interface will be unreachable
la := NewLinkAttrs()
la.Name = "dummy_route6"
la.TxQLen = 1500
dummy := &Dummy{LinkAttrs: la}
if err := LinkAdd(dummy); err != nil {
t.Fatal(err)
}
// get dummy interface
link, err := LinkByName("dummy_route6")
if err != nil {
t.Fatal(err)
}
// bring the interface up
if err := LinkSetUp(link); err != nil {
t.Fatal(err)
}
// remember number of routes before adding
// typically one route (fe80::/64) will be created when dummy_route6 is created
routes, err := RouteList(link, FAMILY_V6)
if err != nil {
t.Fatal(err)
}
nroutes := len(routes)
// add a gateway route
dst := &net.IPNet{
IP: net.ParseIP("2001:db8::0"),
Mask: net.CIDRMask(64, 128),
}
route := Route{LinkIndex: link.Attrs().Index, Dst: dst}
if err := RouteAdd(&route); err != nil {
t.Fatal(err)
}
routes, err = RouteList(link, FAMILY_V6)
if err != nil {
t.Fatal(err)
}
if len(routes) != nroutes+1 {
t.Fatal("Route not added properly")
}
dstIP := net.ParseIP("2001:db8::1")
routeToDstIP, err := RouteGet(dstIP)
if err != nil {
t.Fatal(err)
}
// cleanup route and dummy interface created for the test
if len(routeToDstIP) == 0 {
t.Fatal("Route not present")
}
if err := RouteDel(&route); err != nil {
t.Fatal(err)
}
routes, err = RouteList(link, FAMILY_V6)
if err != nil {
t.Fatal(err)
}
if len(routes) != nroutes {
t.Fatal("Route not removed properly")
}
if err := LinkDel(link); err != nil {
t.Fatal(err)
}
}
func TestRouteReplace(t *testing.T) {
tearDown := setUpNetlinkTest(t)
defer tearDown()
// get loopback interface
link, err := LinkByName("lo")
if err != nil {
t.Fatal(err)
}
// bring the interface up
if err := LinkSetUp(link); err != nil {
t.Fatal(err)
}
// add a gateway route
dst := &net.IPNet{
IP: net.IPv4(192, 168, 0, 0),
Mask: net.CIDRMask(24, 32),
}
ip := net.IPv4(127, 1, 1, 1)
route := Route{LinkIndex: link.Attrs().Index, Dst: dst, Src: ip}
if err := RouteAdd(&route); err != nil {
t.Fatal(err)
}
routes, err := RouteList(link, FAMILY_V4)
if err != nil {
t.Fatal(err)
}
if len(routes) != 1 {
t.Fatal("Route not added properly")
}
ip = net.IPv4(127, 1, 1, 2)
route = Route{LinkIndex: link.Attrs().Index, Dst: dst, Src: ip}
if err := RouteReplace(&route); err != nil {
t.Fatal(err)
}
routes, err = RouteList(link, FAMILY_V4)
if err != nil {
t.Fatal(err)
}
if len(routes) != 1 || !routes[0].Src.Equal(ip) {
t.Fatal("Route not replaced properly")
}
if err := RouteDel(&route); err != nil {
t.Fatal(err)
}
routes, err = RouteList(link, FAMILY_V4)
if err != nil {
t.Fatal(err)
}
if len(routes) != 0 {
t.Fatal("Route not removed properly")
}
}
func TestRouteAddIncomplete(t *testing.T) {
tearDown := setUpNetlinkTest(t)
defer tearDown()
// get loopback interface
link, err := LinkByName("lo")
if err != nil {
t.Fatal(err)
}
// bring the interface up
if err = LinkSetUp(link); err != nil {
t.Fatal(err)
}
route := Route{LinkIndex: link.Attrs().Index}
if err := RouteAdd(&route); err == nil {
t.Fatal("Adding incomplete route should fail")
}
}
func expectRouteUpdate(ch <-chan RouteUpdate, t uint16, dst net.IP) bool {
for {
timeout := time.After(time.Minute)
select {
case update := <-ch:
if update.Type == t &&
update.Route.Dst != nil &&
update.Route.Dst.IP.Equal(dst) {
return true
}
case <-timeout:
return false
}
}
}
func TestRouteSubscribe(t *testing.T) {
tearDown := setUpNetlinkTest(t)
defer tearDown()
ch := make(chan RouteUpdate)
done := make(chan struct{})
defer close(done)
if err := RouteSubscribe(ch, done); err != nil {
t.Fatal(err)
}
// get loopback interface
link, err := LinkByName("lo")
if err != nil {
t.Fatal(err)
}
// bring the interface up
if err = LinkSetUp(link); err != nil {
t.Fatal(err)
}
// add a gateway route
dst := &net.IPNet{
IP: net.IPv4(192, 168, 0, 0),
Mask: net.CIDRMask(24, 32),
}
ip := net.IPv4(127, 1, 1, 1)
route := Route{LinkIndex: link.Attrs().Index, Dst: dst, Src: ip}
if err := RouteAdd(&route); err != nil {
t.Fatal(err)
}
if !expectRouteUpdate(ch, unix.RTM_NEWROUTE, dst.IP) {
t.Fatal("Add update not received as expected")
}
if err := RouteDel(&route); err != nil {
t.Fatal(err)
}
if !expectRouteUpdate(ch, unix.RTM_DELROUTE, dst.IP) {
t.Fatal("Del update not received as expected")
}
}
func TestRouteSubscribeWithOptions(t *testing.T) {
tearDown := setUpNetlinkTest(t)
defer tearDown()
ch := make(chan RouteUpdate)
done := make(chan struct{})
defer close(done)
var lastError error
defer func() {
if lastError != nil {
t.Fatalf("Fatal error received during subscription: %v", lastError)
}
}()
if err := RouteSubscribeWithOptions(ch, done, RouteSubscribeOptions{
ErrorCallback: func(err error) {
lastError = err
},
}); err != nil {
t.Fatal(err)
}
// get loopback interface
link, err := LinkByName("lo")
if err != nil {
t.Fatal(err)
}
// bring the interface up
if err = LinkSetUp(link); err != nil {
t.Fatal(err)
}
// add a gateway route
dst := &net.IPNet{
IP: net.IPv4(192, 168, 0, 0),
Mask: net.CIDRMask(24, 32),
}
ip := net.IPv4(127, 1, 1, 1)
route := Route{LinkIndex: link.Attrs().Index, Dst: dst, Src: ip}
if err := RouteAdd(&route); err != nil {
t.Fatal(err)
}
if !expectRouteUpdate(ch, unix.RTM_NEWROUTE, dst.IP) {
t.Fatal("Add update not received as expected")
}
}
func TestRouteSubscribeAt(t *testing.T) {
skipUnlessRoot(t)
// Create an handle on a custom netns
newNs, err := netns.New()
if err != nil {
t.Fatal(err)
}
defer newNs.Close()
nh, err := NewHandleAt(newNs)
if err != nil {
t.Fatal(err)
}
defer nh.Delete()
// Subscribe for Route events on the custom netns
ch := make(chan RouteUpdate)
done := make(chan struct{})
defer close(done)
if err := RouteSubscribeAt(newNs, ch, done); err != nil {
t.Fatal(err)
}
// get loopback interface
link, err := nh.LinkByName("lo")
if err != nil {
t.Fatal(err)
}
// bring the interface up
if err = nh.LinkSetUp(link); err != nil {
t.Fatal(err)
}
// add a gateway route
dst := &net.IPNet{
IP: net.IPv4(192, 169, 0, 0),
Mask: net.CIDRMask(24, 32),
}
ip := net.IPv4(127, 100, 1, 1)
route := Route{LinkIndex: link.Attrs().Index, Dst: dst, Src: ip}
if err := nh.RouteAdd(&route); err != nil {
t.Fatal(err)
}
if !expectRouteUpdate(ch, unix.RTM_NEWROUTE, dst.IP) {
t.Fatal("Add update not received as expected")
}
if err := nh.RouteDel(&route); err != nil {
t.Fatal(err)
}
if !expectRouteUpdate(ch, unix.RTM_DELROUTE, dst.IP) {
t.Fatal("Del update not received as expected")
}
}
func TestRouteSubscribeListExisting(t *testing.T) {
skipUnlessRoot(t)
// Create an handle on a custom netns
newNs, err := netns.New()
if err != nil {
t.Fatal(err)
}
defer newNs.Close()
nh, err := NewHandleAt(newNs)
if err != nil {
t.Fatal(err)
}
defer nh.Delete()
// get loopback interface
link, err := nh.LinkByName("lo")
if err != nil {
t.Fatal(err)
}
// bring the interface up
if err = nh.LinkSetUp(link); err != nil {
t.Fatal(err)
}
// add a gateway route before subscribing
dst10 := &net.IPNet{
IP: net.IPv4(10, 10, 10, 0),
Mask: net.CIDRMask(24, 32),
}
ip := net.IPv4(127, 100, 1, 1)
route10 := Route{LinkIndex: link.Attrs().Index, Dst: dst10, Src: ip}
if err := nh.RouteAdd(&route10); err != nil {
t.Fatal(err)
}
// Subscribe for Route events including existing routes
ch := make(chan RouteUpdate)
done := make(chan struct{})
defer close(done)
if err := RouteSubscribeWithOptions(ch, done, RouteSubscribeOptions{
Namespace: &newNs,
ListExisting: true},
); err != nil {
t.Fatal(err)
}
if !expectRouteUpdate(ch, unix.RTM_NEWROUTE, dst10.IP) {
t.Fatal("Existing add update not received as expected")
}
// add a gateway route
dst := &net.IPNet{
IP: net.IPv4(192, 169, 0, 0),
Mask: net.CIDRMask(24, 32),
}
route := Route{LinkIndex: link.Attrs().Index, Dst: dst, Src: ip}
if err := nh.RouteAdd(&route); err != nil {
t.Fatal(err)
}
if !expectRouteUpdate(ch, unix.RTM_NEWROUTE, dst.IP) {
t.Fatal("Add update not received as expected")
}
if err := nh.RouteDel(&route); err != nil {
t.Fatal(err)
}
if !expectRouteUpdate(ch, unix.RTM_DELROUTE, dst.IP) {
t.Fatal("Del update not received as expected")
}
if err := nh.RouteDel(&route10); err != nil {
t.Fatal(err)
}
if !expectRouteUpdate(ch, unix.RTM_DELROUTE, dst10.IP) {
t.Fatal("Del update not received as expected")
}
}
func TestRouteFilterAllTables(t *testing.T) {
tearDown := setUpNetlinkTest(t)
defer tearDown()
// get loopback interface
link, err := LinkByName("lo")
if err != nil {
t.Fatal(err)
}
// bring the interface up
if err = LinkSetUp(link); err != nil {
t.Fatal(err)
}
// add a gateway route
dst := &net.IPNet{
IP: net.IPv4(1, 1, 1, 1),
Mask: net.CIDRMask(32, 32),
}
tables := []int{1000, 1001, 1002}
src := net.IPv4(127, 3, 3, 3)
for _, table := range tables {
route := Route{
LinkIndex: link.Attrs().Index,
Dst: dst,
Src: src,
Scope: unix.RT_SCOPE_LINK,
Priority: 13,
Table: table,
Type: unix.RTN_UNICAST,
Tos: 14,
Hoplimit: 100,
}
if err := RouteAdd(&route); err != nil {
t.Fatal(err)
}
}
routes, err := RouteListFiltered(FAMILY_V4, &Route{
Dst: dst,
Src: src,
Scope: unix.RT_SCOPE_LINK,
Table: unix.RT_TABLE_UNSPEC,
Type: unix.RTN_UNICAST,
Tos: 14,
Hoplimit: 100,
}, RT_FILTER_DST|RT_FILTER_SRC|RT_FILTER_SCOPE|RT_FILTER_TABLE|RT_FILTER_TYPE|RT_FILTER_TOS|RT_FILTER_HOPLIMIT)
if err != nil {
t.Fatal(err)
}
if len(routes) != 3 {
t.Fatal("Routes not added properly")
}
for _, route := range routes {
if route.Scope != unix.RT_SCOPE_LINK {
t.Fatal("Invalid Scope. Route not added properly")
}
if route.Priority != 13 {
t.Fatal("Invalid Priority. Route not added properly")
}
if !tableIDIn(tables, route.Table) {
t.Fatalf("Invalid Table %d. Route not added properly", route.Table)
}
if route.Type != unix.RTN_UNICAST {
t.Fatal("Invalid Type. Route not added properly")
}
if route.Tos != 14 {
t.Fatal("Invalid Tos. Route not added properly")
}
if route.Hoplimit != 100 {
t.Fatal("Invalid Hoplimit. Route not added properly")
}
}
}
func tableIDIn(ids []int, id int) bool {
for _, v := range ids {
if v == id {
return true
}
}
return false
}
func TestRouteExtraFields(t *testing.T) {
tearDown := setUpNetlinkTest(t)
defer tearDown()
// get loopback interface
link, err := LinkByName("lo")
if err != nil {
t.Fatal(err)
}
// bring the interface up
if err = LinkSetUp(link); err != nil {
t.Fatal(err)
}
// add a gateway route
dst := &net.IPNet{
IP: net.IPv4(1, 1, 1, 1),
Mask: net.CIDRMask(32, 32),
}
src := net.IPv4(127, 3, 3, 3)
route := Route{
LinkIndex: link.Attrs().Index,
Dst: dst,
Src: src,
Scope: unix.RT_SCOPE_LINK,
Priority: 13,
Table: unix.RT_TABLE_MAIN,
Type: unix.RTN_UNICAST,
Tos: 14,
Hoplimit: 100,
}
if err := RouteAdd(&route); err != nil {
t.Fatal(err)
}
routes, err := RouteListFiltered(FAMILY_V4, &Route{
Dst: dst,
Src: src,
Scope: unix.RT_SCOPE_LINK,
Table: unix.RT_TABLE_MAIN,
Type: unix.RTN_UNICAST,
Tos: 14,
Hoplimit: 100,
}, RT_FILTER_DST|RT_FILTER_SRC|RT_FILTER_SCOPE|RT_FILTER_TABLE|RT_FILTER_TYPE|RT_FILTER_TOS|RT_FILTER_HOPLIMIT)
if err != nil {
t.Fatal(err)
}
if len(routes) != 1 {
t.Fatal("Route not added properly")
}
if routes[0].Scope != unix.RT_SCOPE_LINK {
t.Fatal("Invalid Scope. Route not added properly")
}
if routes[0].Priority != 13 {
t.Fatal("Invalid Priority. Route not added properly")
}
if routes[0].Table != unix.RT_TABLE_MAIN {
t.Fatal("Invalid Scope. Route not added properly")
}
if routes[0].Type != unix.RTN_UNICAST {
t.Fatal("Invalid Type. Route not added properly")
}
if routes[0].Tos != 14 {
t.Fatal("Invalid Tos. Route not added properly")
}
if routes[0].Hoplimit != 100 {
t.Fatal("Invalid Hoplimit. Route not added properly")
}
}
func TestRouteMultiPath(t *testing.T) {
tearDown := setUpNetlinkTest(t)
defer tearDown()
// get loopback interface
link, err := LinkByName("lo")
if err != nil {
t.Fatal(err)
}
// bring the interface up
if err = LinkSetUp(link); err != nil {
t.Fatal(err)
}
// add a gateway route
dst := &net.IPNet{
IP: net.IPv4(192, 168, 0, 0),
Mask: net.CIDRMask(24, 32),
}
idx := link.Attrs().Index
route := Route{Dst: dst, MultiPath: []*NexthopInfo{{LinkIndex: idx}, {LinkIndex: idx}}}
if err := RouteAdd(&route); err != nil {
t.Fatal(err)
}
routes, err := RouteList(nil, FAMILY_V4)
if err != nil {
t.Fatal(err)
}
if len(routes) != 1 {
t.Fatal("MultiPath Route not added properly")
}
if len(routes[0].MultiPath) != 2 {
t.Fatal("MultiPath Route not added properly")
}
}
func TestFilterDefaultRoute(t *testing.T) {
tearDown := setUpNetlinkTest(t)
defer tearDown()
// get loopback interface
link, err := LinkByName("lo")
if err != nil {
t.Fatal(err)
}
// bring the interface up
if err = LinkSetUp(link); err != nil {
t.Fatal(err)
}
address := &Addr{
IPNet: &net.IPNet{
IP: net.IPv4(127, 0, 0, 2),
Mask: net.CIDRMask(24, 32),
},
}
if err = AddrAdd(link, address); err != nil {
t.Fatal(err)
}
// Add default route
gw := net.IPv4(127, 0, 0, 2)
defaultRoute := Route{
Dst: nil,
Gw: gw,
}
if err := RouteAdd(&defaultRoute); err != nil {
t.Fatal(err)
}
// add an extra route
dst := &net.IPNet{
IP: net.IPv4(192, 168, 0, 0),
Mask: net.CIDRMask(24, 32),
}
extraRoute := Route{
Dst: dst,
Gw: gw,
}
if err := RouteAdd(&extraRoute); err != nil {
t.Fatal(err)
}
var filterTests = []struct {
filter *Route
mask uint64
expected net.IP
}{
{
&Route{Dst: nil},
RT_FILTER_DST,
gw,
},
{
&Route{Dst: dst},
RT_FILTER_DST,
gw,
},
}
for _, f := range filterTests {
routes, err := RouteListFiltered(FAMILY_V4, f.filter, f.mask)
if err != nil {
t.Fatal(err)
}
if len(routes) != 1 {
t.Fatal("Route not filtered properly")
}
if !routes[0].Gw.Equal(gw) {
t.Fatal("Unexpected Gateway")
}
}
}
func TestMPLSRouteAddDel(t *testing.T) {
tearDown := setUpMPLSNetlinkTest(t)
defer tearDown()
// get loopback interface
link, err := LinkByName("lo")
if err != nil {
t.Fatal(err)
}
// bring the interface up
if err := LinkSetUp(link); err != nil {
t.Fatal(err)
}
mplsDst := 100
route := Route{
LinkIndex: link.Attrs().Index,
MPLSDst: &mplsDst,
NewDst: &MPLSDestination{
Labels: []int{200, 300},
},
}
if err := RouteAdd(&route); err != nil {
t.Fatal(err)
}
routes, err := RouteList(link, FAMILY_MPLS)
if err != nil {
t.Fatal(err)
}
if len(routes) != 1 {
t.Fatal("Route not added properly")
}
if err := RouteDel(&route); err != nil {
t.Fatal(err)
}
routes, err = RouteList(link, FAMILY_MPLS)
if err != nil {
t.Fatal(err)
}
if len(routes) != 0 {
t.Fatal("Route not removed properly")
}
}
func TestRouteEqual(t *testing.T) {
mplsDst := 100
seg6encap := &SEG6Encap{Mode: nl.SEG6_IPTUN_MODE_ENCAP}
seg6encap.Segments = []net.IP{net.ParseIP("fc00:a000::11")}
cases := []Route{
{
Dst: nil,
Gw: net.IPv4(1, 1, 1, 1),
},
{
LinkIndex: 20,
Dst: nil,
Gw: net.IPv4(1, 1, 1, 1),
},
{
ILinkIndex: 21,
LinkIndex: 20,
Dst: nil,
Gw: net.IPv4(1, 1, 1, 1),
},
{
LinkIndex: 20,
Dst: nil,
Protocol: 20,
Gw: net.IPv4(1, 1, 1, 1),
},
{
LinkIndex: 20,
Dst: nil,
Priority: 20,
Gw: net.IPv4(1, 1, 1, 1),
},
{
LinkIndex: 20,
Dst: nil,
Type: 20,
Gw: net.IPv4(1, 1, 1, 1),
},
{
LinkIndex: 20,
Dst: nil,
Table: 200,
Gw: net.IPv4(1, 1, 1, 1),
},
{
LinkIndex: 20,
Dst: nil,
Tos: 1,
Gw: net.IPv4(1, 1, 1, 1),
},
{
LinkIndex: 20,
Dst: nil,
Hoplimit: 1,
Gw: net.IPv4(1, 1, 1, 1),
},
{
LinkIndex: 20,
Dst: nil,
Flags: int(FLAG_ONLINK),
Gw: net.IPv4(1, 1, 1, 1),
},
{
LinkIndex: 10,
Dst: &net.IPNet{
IP: net.IPv4(192, 168, 0, 0),
Mask: net.CIDRMask(24, 32),
},
Src: net.IPv4(127, 1, 1, 1),
},
{
LinkIndex: 10,
Scope: unix.RT_SCOPE_LINK,
Dst: &net.IPNet{
IP: net.IPv4(192, 168, 0, 0),
Mask: net.CIDRMask(24, 32),
},
Src: net.IPv4(127, 1, 1, 1),
},
{
LinkIndex: 3,
Dst: &net.IPNet{
IP: net.IPv4(1, 1, 1, 1),
Mask: net.CIDRMask(32, 32),
},
Src: net.IPv4(127, 3, 3, 3),
Scope: unix.RT_SCOPE_LINK,
Priority: 13,
Table: unix.RT_TABLE_MAIN,
Type: unix.RTN_UNICAST,
Tos: 14,
},
{
LinkIndex: 3,
Dst: &net.IPNet{
IP: net.IPv4(1, 1, 1, 1),
Mask: net.CIDRMask(32, 32),
},
Src: net.IPv4(127, 3, 3, 3),
Scope: unix.RT_SCOPE_LINK,
Priority: 13,
Table: unix.RT_TABLE_MAIN,
Type: unix.RTN_UNICAST,
Hoplimit: 100,
},
{
LinkIndex: 10,
MPLSDst: &mplsDst,
NewDst: &MPLSDestination{
Labels: []int{200, 300},
},
},
{
Dst: nil,
Gw: net.IPv4(1, 1, 1, 1),
Encap: &MPLSEncap{
Labels: []int{100},
},
},
{
LinkIndex: 10,
Dst: &net.IPNet{
IP: net.IPv4(10, 0, 0, 102),
Mask: net.CIDRMask(32, 32),
},
Encap: seg6encap,
},
{
Dst: nil,
MultiPath: []*NexthopInfo{{LinkIndex: 10}, {LinkIndex: 20}},
},
{
Dst: nil,
MultiPath: []*NexthopInfo{{
LinkIndex: 10,
Gw: net.IPv4(1, 1, 1, 1),
}, {LinkIndex: 20}},
},
{
Dst: nil,
MultiPath: []*NexthopInfo{{
LinkIndex: 10,
Gw: net.IPv4(1, 1, 1, 1),
Encap: &MPLSEncap{
Labels: []int{100},
},
}, {LinkIndex: 20}},
},
{
Dst: nil,
MultiPath: []*NexthopInfo{{
LinkIndex: 10,
NewDst: &MPLSDestination{
Labels: []int{200, 300},
},
}, {LinkIndex: 20}},
},
{
Dst: nil,
MultiPath: []*NexthopInfo{{
LinkIndex: 10,
Encap: seg6encap,
}, {LinkIndex: 20}},
},
}
for i1 := range cases {
for i2 := range cases {
got := cases[i1].Equal(cases[i2])
expected := i1 == i2
if got != expected {
t.Errorf("Equal(%q,%q) == %s but expected %s",
cases[i1], cases[i2],
strconv.FormatBool(got),
strconv.FormatBool(expected))
}
}
}
}
func TestIPNetEqual(t *testing.T) {
cases := []string{
"1.1.1.1/24", "1.1.1.0/24", "1.1.1.1/32",
"0.0.0.0/0", "0.0.0.0/14",
"2001:db8::/32", "2001:db8::/128",
"2001:db8::caff/32", "2001:db8::caff/128",
"",
}
for _, c1 := range cases {
var n1 *net.IPNet
if c1 != "" {
var i1 net.IP
var err1 error
i1, n1, err1 = net.ParseCIDR(c1)
if err1 != nil {
panic(err1)
}
n1.IP = i1
}
for _, c2 := range cases {
var n2 *net.IPNet
if c2 != "" {
var i2 net.IP
var err2 error
i2, n2, err2 = net.ParseCIDR(c2)
if err2 != nil {
panic(err2)
}
n2.IP = i2
}
got := ipNetEqual(n1, n2)
expected := c1 == c2
if got != expected {
t.Errorf("IPNetEqual(%q,%q) == %s but expected %s",
c1, c2,
strconv.FormatBool(got),
strconv.FormatBool(expected))
}
}
}
}
func TestSEG6LocalEqual(t *testing.T) {
// Different attributes exists in different Actions. For example, Action
// SEG6_LOCAL_ACTION_END_X has In6Addr, SEG6_LOCAL_ACTION_END_T has Table etc.
segs := []net.IP{net.ParseIP("fc00:a000::11")}
// set flags for each actions.
var flags_end [nl.SEG6_LOCAL_MAX]bool
flags_end[nl.SEG6_LOCAL_ACTION] = true
var flags_end_x [nl.SEG6_LOCAL_MAX]bool
flags_end_x[nl.SEG6_LOCAL_ACTION] = true
flags_end_x[nl.SEG6_LOCAL_NH6] = true
var flags_end_t [nl.SEG6_LOCAL_MAX]bool
flags_end_t[nl.SEG6_LOCAL_ACTION] = true
flags_end_t[nl.SEG6_LOCAL_TABLE] = true
var flags_end_dx2 [nl.SEG6_LOCAL_MAX]bool
flags_end_dx2[nl.SEG6_LOCAL_ACTION] = true
flags_end_dx2[nl.SEG6_LOCAL_OIF] = true
var flags_end_dx6 [nl.SEG6_LOCAL_MAX]bool
flags_end_dx6[nl.SEG6_LOCAL_ACTION] = true
flags_end_dx6[nl.SEG6_LOCAL_NH6] = true
var flags_end_dx4 [nl.SEG6_LOCAL_MAX]bool
flags_end_dx4[nl.SEG6_LOCAL_ACTION] = true
flags_end_dx4[nl.SEG6_LOCAL_NH4] = true
var flags_end_dt6 [nl.SEG6_LOCAL_MAX]bool
flags_end_dt6[nl.SEG6_LOCAL_ACTION] = true
flags_end_dt6[nl.SEG6_LOCAL_TABLE] = true
var flags_end_dt4 [nl.SEG6_LOCAL_MAX]bool
flags_end_dt4[nl.SEG6_LOCAL_ACTION] = true
flags_end_dt4[nl.SEG6_LOCAL_TABLE] = true
var flags_end_b6 [nl.SEG6_LOCAL_MAX]bool
flags_end_b6[nl.SEG6_LOCAL_ACTION] = true
flags_end_b6[nl.SEG6_LOCAL_SRH] = true
var flags_end_b6_encaps [nl.SEG6_LOCAL_MAX]bool
flags_end_b6_encaps[nl.SEG6_LOCAL_ACTION] = true
flags_end_b6_encaps[nl.SEG6_LOCAL_SRH] = true
cases := []SEG6LocalEncap{
{
Flags: flags_end,
Action: nl.SEG6_LOCAL_ACTION_END,
},
{
Flags: flags_end_x,
Action: nl.SEG6_LOCAL_ACTION_END_X,
In6Addr: net.ParseIP("2001:db8::1"),
},
{
Flags: flags_end_t,
Action: nl.SEG6_LOCAL_ACTION_END_T,
Table: 10,
},
{
Flags: flags_end_dx2,
Action: nl.SEG6_LOCAL_ACTION_END_DX2,
Oif: 20,
},
{
Flags: flags_end_dx6,
Action: nl.SEG6_LOCAL_ACTION_END_DX6,
In6Addr: net.ParseIP("2001:db8::1"),
},
{
Flags: flags_end_dx4,
Action: nl.SEG6_LOCAL_ACTION_END_DX4,
InAddr: net.IPv4(192, 168, 10, 10),
},
{
Flags: flags_end_dt6,
Action: nl.SEG6_LOCAL_ACTION_END_DT6,
Table: 30,
},
{
Flags: flags_end_dt4,
Action: nl.SEG6_LOCAL_ACTION_END_DT4,
Table: 40,
},
{
Flags: flags_end_b6,
Action: nl.SEG6_LOCAL_ACTION_END_B6,
Segments: segs,
},
{
Flags: flags_end_b6_encaps,
Action: nl.SEG6_LOCAL_ACTION_END_B6_ENCAPS,
Segments: segs,
},
}
for i1 := range cases {
for i2 := range cases {
got := cases[i1].Equal(&cases[i2])
expected := i1 == i2
if got != expected {
t.Errorf("Equal(%v,%v) == %s but expected %s",
cases[i1], cases[i2],
strconv.FormatBool(got),
strconv.FormatBool(expected))
}
}
}
}
func TestSEG6RouteAddDel(t *testing.T) {
// add/del routes with LWTUNNEL_SEG6 to/from loopback interface.
// Test both seg6 modes: encap (IPv4) & inline (IPv6).
tearDown := setUpSEG6NetlinkTest(t)
defer tearDown()
// get loopback interface and bring it up
link, err := LinkByName("lo")
if err != nil {
t.Fatal(err)
}
if err := LinkSetUp(link); err != nil {
t.Fatal(err)
}
dst1 := &net.IPNet{ // INLINE mode must be IPv6 route
IP: net.ParseIP("2001:db8::1"),
Mask: net.CIDRMask(128, 128),
}
dst2 := &net.IPNet{
IP: net.IPv4(10, 0, 0, 102),
Mask: net.CIDRMask(32, 32),
}
var s1, s2 []net.IP
s1 = append(s1, net.ParseIP("::")) // inline requires "::"
s1 = append(s1, net.ParseIP("fc00:a000::12"))
s1 = append(s1, net.ParseIP("fc00:a000::11"))
s2 = append(s2, net.ParseIP("fc00:a000::22"))
s2 = append(s2, net.ParseIP("fc00:a000::21"))
e1 := &SEG6Encap{Mode: nl.SEG6_IPTUN_MODE_INLINE}
e2 := &SEG6Encap{Mode: nl.SEG6_IPTUN_MODE_ENCAP}
e1.Segments = s1
e2.Segments = s2
route1 := Route{LinkIndex: link.Attrs().Index, Dst: dst1, Encap: e1}
route2 := Route{LinkIndex: link.Attrs().Index, Dst: dst2, Encap: e2}
// Add SEG6 routes
if err := RouteAdd(&route1); err != nil {
t.Fatal(err)
}
if err := RouteAdd(&route2); err != nil {
t.Fatal(err)
}
// SEG6_IPTUN_MODE_INLINE
routes, err := RouteList(link, FAMILY_V6)
if err != nil {
t.Fatal(err)
}
if len(routes) != 1 {
t.Fatal("SEG6 routes not added properly")
}
for _, route := range routes {
if route.Encap.Type() != nl.LWTUNNEL_ENCAP_SEG6 {
t.Fatal("Invalid Type. SEG6_IPTUN_MODE_INLINE routes not added properly")
}
}
// SEG6_IPTUN_MODE_ENCAP
routes, err = RouteList(link, FAMILY_V4)
if err != nil {
t.Fatal(err)
}
if len(routes) != 1 {
t.Fatal("SEG6 routes not added properly")
}
for _, route := range routes {
if route.Encap.Type() != nl.LWTUNNEL_ENCAP_SEG6 {
t.Fatal("Invalid Type. SEG6_IPTUN_MODE_ENCAP routes not added properly")
}
}
// Del (remove) SEG6 routes
if err := RouteDel(&route1); err != nil {
t.Fatal(err)
}
if err := RouteDel(&route2); err != nil {
t.Fatal(err)
}
routes, err = RouteList(link, FAMILY_V4)
if err != nil {
t.Fatal(err)
}
if len(routes) != 0 {
t.Fatal("SEG6 routes not removed properly")
}
}
// add/del routes with LWTUNNEL_ENCAP_SEG6_LOCAL to/from dummy interface.
func TestSEG6LocalRoute6AddDel(t *testing.T) {
minKernelRequired(t, 4, 14)
tearDown := setUpSEG6NetlinkTest(t)
defer tearDown()
// create dummy interface
// IPv6 route added to loopback interface will be unreachable
la := NewLinkAttrs()
la.Name = "dummy_route6"
la.TxQLen = 1500
dummy := &Dummy{LinkAttrs: la}
if err := LinkAdd(dummy); err != nil {
t.Fatal(err)
}
// get dummy interface and bring it up
link, err := LinkByName("dummy_route6")
if err != nil {
t.Fatal(err)
}
if err := LinkSetUp(link); err != nil {
t.Fatal(err)
}
dst1 := &net.IPNet{
IP: net.ParseIP("2001:db8::1"),
Mask: net.CIDRMask(128, 128),
}
// Create Route including Action SEG6_LOCAL_ACTION_END_B6.
// Could be any Action but thought better to have seg list.
var s1 []net.IP
s1 = append(s1, net.ParseIP("fc00:a000::12"))
s1 = append(s1, net.ParseIP("fc00:a000::11"))
var flags_end_b6_encaps [nl.SEG6_LOCAL_MAX]bool
flags_end_b6_encaps[nl.SEG6_LOCAL_ACTION] = true
flags_end_b6_encaps[nl.SEG6_LOCAL_SRH] = true
e1 := &SEG6LocalEncap{
Flags: flags_end_b6_encaps,
Action: nl.SEG6_LOCAL_ACTION_END_B6,
Segments: s1,
}
route1 := Route{LinkIndex: link.Attrs().Index, Dst: dst1, Encap: e1}
// Add SEG6Local routes
if err := RouteAdd(&route1); err != nil {
t.Fatal(err)
}
// typically one route (fe80::/64) will be created when dummy_route6 is created.
// Thus you cannot use RouteList() to find the route entry just added.
// Lookup route and confirm it's SEG6Local route just added.
routesFound, err := RouteGet(dst1.IP)
if err != nil {
t.Fatal(err)
}
if len(routesFound) != 1 { // should only find 1 route entry
t.Fatal("SEG6Local route not added correctly")
}
if !e1.Equal(routesFound[0].Encap) {
t.Fatal("Encap does not match the original SEG6LocalEncap")
}
// Del SEG6Local routes
if err := RouteDel(&route1); err != nil {
t.Fatal(err)
}
// Confirm route is deleted.
routesFound, err = RouteGet(dst1.IP)
if err == nil {
t.Fatal("SEG6Local route still exists.")
}
// cleanup dummy interface created for the test
if err := LinkDel(link); err != nil {
t.Fatal(err)
}
}
func TestMTURouteAddDel(t *testing.T) {
_, err := RouteList(nil, FAMILY_V4)
if err != nil {
t.Fatal(err)
}
tearDown := setUpNetlinkTest(t)
defer tearDown()
// get loopback interface
link, err := LinkByName("lo")
if err != nil {
t.Fatal(err)
}
// bring the interface up
if err := LinkSetUp(link); err != nil {
t.Fatal(err)
}
// add a gateway route
dst := &net.IPNet{
IP: net.IPv4(192, 168, 0, 0),
Mask: net.CIDRMask(24, 32),
}
route := Route{LinkIndex: link.Attrs().Index, Dst: dst, MTU: 500}
if err := RouteAdd(&route); err != nil {
t.Fatal(err)
}
routes, err := RouteList(link, FAMILY_V4)
if err != nil {
t.Fatal(err)
}
if len(routes) != 1 {
t.Fatal("Route not added properly")
}
if route.MTU != routes[0].MTU {
t.Fatal("Route mtu not set properly")
}
if err := RouteDel(&route); err != nil {
t.Fatal(err)
}
routes, err = RouteList(link, FAMILY_V4)
if err != nil {
t.Fatal(err)
}
if len(routes) != 0 {
t.Fatal("Route not removed properly")
}
}