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Do not forward link-local packets

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As per RFC 3927 section 7 and RFC 4291 section 2.5.6.

Test: forward_test.TestMulticastForwarding
PiperOrigin-RevId: 367519336
This commit is contained in:
Ghanan Gowripalan
2021-04-08 15:30:53 -07:00
committed by gVisor bot
parent 5ac79e1545
commit 091badcb9c
9 changed files with 340 additions and 17 deletions
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pkg/tcpip/tests/utils/utils.go
+2 -6
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@@ -48,10 +48,6 @@ const (
LinkAddr4 = tcpip.LinkAddress("\x02\x03\x03\x04\x05\x09")
)
const (
ttl = 255
)
// Common IP addresses used by tests.
var (
Ipv4Addr = tcpip.AddressWithPrefix{
@@ -322,7 +318,7 @@ func SetupRoutedStacks(t *testing.T, host1Stack, routerStack, host2Stack *stack.
// RxICMPv4EchoRequest constructs and injects an ICMPv4 echo request packet on
// the provided endpoint.
func RxICMPv4EchoRequest(e *channel.Endpoint, src, dst tcpip.Address) {
func RxICMPv4EchoRequest(e *channel.Endpoint, src, dst tcpip.Address, ttl uint8) {
totalLen := header.IPv4MinimumSize + header.ICMPv4MinimumSize
hdr := buffer.NewPrependable(totalLen)
pkt := header.ICMPv4(hdr.Prepend(header.ICMPv4MinimumSize))
@@ -347,7 +343,7 @@ func RxICMPv4EchoRequest(e *channel.Endpoint, src, dst tcpip.Address) {
// RxICMPv6EchoRequest constructs and injects an ICMPv6 echo request packet on
// the provided endpoint.
func RxICMPv6EchoRequest(e *channel.Endpoint, src, dst tcpip.Address) {
func RxICMPv6EchoRequest(e *channel.Endpoint, src, dst tcpip.Address, ttl uint8) {
totalLen := header.IPv6MinimumSize + header.ICMPv6MinimumSize
hdr := buffer.NewPrependable(totalLen)
pkt := header.ICMPv6(hdr.Prepend(header.ICMPv6MinimumSize))