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-rw-r--r--pkg/tcpip/stack/stack_test.go164
1 files changed, 117 insertions, 47 deletions
diff --git a/pkg/tcpip/stack/stack_test.go b/pkg/tcpip/stack/stack_test.go
index 457990945..68dcd9e61 100644
--- a/pkg/tcpip/stack/stack_test.go
+++ b/pkg/tcpip/stack/stack_test.go
@@ -2726,8 +2726,16 @@ func TestIPv6SourceAddressSelectionScopeAndSameAddress(t *testing.T) {
uniqueLocalAddr2 = tcpip.Address("\xfd\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02")
globalAddr1 = tcpip.Address("\xa0\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01")
globalAddr2 = tcpip.Address("\xa0\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02")
- nicID = 1
- lifetimeSeconds = 9999
+ globalAddr3 = tcpip.Address("\xa0\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x03")
+ ipv4MappedIPv6Addr1 = tcpip.Address("\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xff\xff\x00\x00\x00\x01")
+ ipv4MappedIPv6Addr2 = tcpip.Address("\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xff\xff\x00\x00\x00\x02")
+ toredoAddr1 = tcpip.Address("\x20\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01")
+ toredoAddr2 = tcpip.Address("\x20\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02")
+ ipv6ToIPv4Addr1 = tcpip.Address("\x20\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01")
+ ipv6ToIPv4Addr2 = tcpip.Address("\x20\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02")
+
+ nicID = 1
+ lifetimeSeconds = 9999
)
prefix1, _, stableGlobalAddr1 := prefixSubnetAddr(0, linkAddr1)
@@ -2744,139 +2752,191 @@ func TestIPv6SourceAddressSelectionScopeAndSameAddress(t *testing.T) {
slaacPrefixForTempAddrBeforeNICAddrAdd tcpip.AddressWithPrefix
nicAddrs []tcpip.Address
slaacPrefixForTempAddrAfterNICAddrAdd tcpip.AddressWithPrefix
- connectAddr tcpip.Address
+ remoteAddr tcpip.Address
expectedLocalAddr tcpip.Address
}{
- // Test Rule 1 of RFC 6724 section 5.
+ // Test Rule 1 of RFC 6724 section 5 (prefer same address).
{
name: "Same Global most preferred (last address)",
- nicAddrs: []tcpip.Address{linkLocalAddr1, uniqueLocalAddr1, globalAddr1},
- connectAddr: globalAddr1,
+ nicAddrs: []tcpip.Address{linkLocalAddr1, globalAddr1},
+ remoteAddr: globalAddr1,
expectedLocalAddr: globalAddr1,
},
{
name: "Same Global most preferred (first address)",
- nicAddrs: []tcpip.Address{globalAddr1, linkLocalAddr1, uniqueLocalAddr1},
- connectAddr: globalAddr1,
+ nicAddrs: []tcpip.Address{globalAddr1, uniqueLocalAddr1},
+ remoteAddr: globalAddr1,
expectedLocalAddr: globalAddr1,
},
{
name: "Same Link Local most preferred (last address)",
- nicAddrs: []tcpip.Address{globalAddr1, uniqueLocalAddr1, linkLocalAddr1},
- connectAddr: linkLocalAddr1,
+ nicAddrs: []tcpip.Address{globalAddr1, linkLocalAddr1},
+ remoteAddr: linkLocalAddr1,
expectedLocalAddr: linkLocalAddr1,
},
{
name: "Same Link Local most preferred (first address)",
- nicAddrs: []tcpip.Address{linkLocalAddr1, uniqueLocalAddr1, globalAddr1},
- connectAddr: linkLocalAddr1,
+ nicAddrs: []tcpip.Address{linkLocalAddr1, globalAddr1},
+ remoteAddr: linkLocalAddr1,
expectedLocalAddr: linkLocalAddr1,
},
{
name: "Same Unique Local most preferred (last address)",
- nicAddrs: []tcpip.Address{uniqueLocalAddr1, globalAddr1, linkLocalAddr1},
- connectAddr: uniqueLocalAddr1,
+ nicAddrs: []tcpip.Address{uniqueLocalAddr1, globalAddr1},
+ remoteAddr: uniqueLocalAddr1,
expectedLocalAddr: uniqueLocalAddr1,
},
{
name: "Same Unique Local most preferred (first address)",
- nicAddrs: []tcpip.Address{globalAddr1, linkLocalAddr1, uniqueLocalAddr1},
- connectAddr: uniqueLocalAddr1,
+ nicAddrs: []tcpip.Address{globalAddr1, uniqueLocalAddr1},
+ remoteAddr: uniqueLocalAddr1,
expectedLocalAddr: uniqueLocalAddr1,
},
- // Test Rule 2 of RFC 6724 section 5.
+ // Test Rule 2 of RFC 6724 section 5 (prefer appropriate scope).
{
name: "Global most preferred (last address)",
- nicAddrs: []tcpip.Address{linkLocalAddr1, uniqueLocalAddr1, globalAddr1},
- connectAddr: globalAddr2,
+ nicAddrs: []tcpip.Address{linkLocalAddr1, globalAddr1},
+ remoteAddr: globalAddr2,
expectedLocalAddr: globalAddr1,
},
{
name: "Global most preferred (first address)",
- nicAddrs: []tcpip.Address{globalAddr1, linkLocalAddr1, uniqueLocalAddr1},
- connectAddr: globalAddr2,
+ nicAddrs: []tcpip.Address{globalAddr1, linkLocalAddr1},
+ remoteAddr: globalAddr2,
expectedLocalAddr: globalAddr1,
},
{
name: "Link Local most preferred (last address)",
- nicAddrs: []tcpip.Address{globalAddr1, uniqueLocalAddr1, linkLocalAddr1},
- connectAddr: linkLocalAddr2,
+ nicAddrs: []tcpip.Address{globalAddr1, linkLocalAddr1},
+ remoteAddr: linkLocalAddr2,
expectedLocalAddr: linkLocalAddr1,
},
{
name: "Link Local most preferred (first address)",
- nicAddrs: []tcpip.Address{linkLocalAddr1, uniqueLocalAddr1, globalAddr1},
- connectAddr: linkLocalAddr2,
+ nicAddrs: []tcpip.Address{linkLocalAddr1, globalAddr1},
+ remoteAddr: linkLocalAddr2,
expectedLocalAddr: linkLocalAddr1,
},
{
name: "Link Local most preferred for link local multicast (last address)",
- nicAddrs: []tcpip.Address{globalAddr1, uniqueLocalAddr1, linkLocalAddr1},
- connectAddr: linkLocalMulticastAddr,
+ nicAddrs: []tcpip.Address{globalAddr1, linkLocalAddr1},
+ remoteAddr: linkLocalMulticastAddr,
expectedLocalAddr: linkLocalAddr1,
},
{
name: "Link Local most preferred for link local multicast (first address)",
- nicAddrs: []tcpip.Address{linkLocalAddr1, uniqueLocalAddr1, globalAddr1},
- connectAddr: linkLocalMulticastAddr,
+ nicAddrs: []tcpip.Address{linkLocalAddr1, globalAddr1},
+ remoteAddr: linkLocalMulticastAddr,
expectedLocalAddr: linkLocalAddr1,
},
+
+ // Test Rule 6 of 6724 section 5 (prefer matching label).
{
name: "Unique Local most preferred (last address)",
- nicAddrs: []tcpip.Address{uniqueLocalAddr1, globalAddr1, linkLocalAddr1},
- connectAddr: uniqueLocalAddr2,
+ nicAddrs: []tcpip.Address{uniqueLocalAddr1, globalAddr1, ipv4MappedIPv6Addr1, toredoAddr1, ipv6ToIPv4Addr1},
+ remoteAddr: uniqueLocalAddr2,
expectedLocalAddr: uniqueLocalAddr1,
},
{
name: "Unique Local most preferred (first address)",
- nicAddrs: []tcpip.Address{globalAddr1, linkLocalAddr1, uniqueLocalAddr1},
- connectAddr: uniqueLocalAddr2,
+ nicAddrs: []tcpip.Address{globalAddr1, ipv4MappedIPv6Addr1, toredoAddr1, ipv6ToIPv4Addr1, uniqueLocalAddr1},
+ remoteAddr: uniqueLocalAddr2,
expectedLocalAddr: uniqueLocalAddr1,
},
+ {
+ name: "Toredo most preferred (first address)",
+ nicAddrs: []tcpip.Address{toredoAddr1, uniqueLocalAddr1, globalAddr1, ipv4MappedIPv6Addr1, ipv6ToIPv4Addr1},
+ remoteAddr: toredoAddr2,
+ expectedLocalAddr: toredoAddr1,
+ },
+ {
+ name: "Toredo most preferred (last address)",
+ nicAddrs: []tcpip.Address{globalAddr1, ipv4MappedIPv6Addr1, ipv6ToIPv4Addr1, uniqueLocalAddr1, toredoAddr1},
+ remoteAddr: toredoAddr2,
+ expectedLocalAddr: toredoAddr1,
+ },
+ {
+ name: "6To4 most preferred (first address)",
+ nicAddrs: []tcpip.Address{ipv6ToIPv4Addr1, toredoAddr1, uniqueLocalAddr1, globalAddr1, ipv4MappedIPv6Addr1},
+ remoteAddr: ipv6ToIPv4Addr2,
+ expectedLocalAddr: ipv6ToIPv4Addr1,
+ },
+ {
+ name: "6To4 most preferred (last address)",
+ nicAddrs: []tcpip.Address{globalAddr1, ipv4MappedIPv6Addr1, uniqueLocalAddr1, toredoAddr1, ipv6ToIPv4Addr1},
+ remoteAddr: ipv6ToIPv4Addr2,
+ expectedLocalAddr: ipv6ToIPv4Addr1,
+ },
+ {
+ name: "IPv4 mapped IPv6 most preferred (first address)",
+ nicAddrs: []tcpip.Address{ipv4MappedIPv6Addr1, ipv6ToIPv4Addr1, toredoAddr1, uniqueLocalAddr1, globalAddr1},
+ remoteAddr: ipv4MappedIPv6Addr2,
+ expectedLocalAddr: ipv4MappedIPv6Addr1,
+ },
+ {
+ name: "IPv4 mapped IPv6 most preferred (last address)",
+ nicAddrs: []tcpip.Address{globalAddr1, ipv6ToIPv4Addr1, uniqueLocalAddr1, toredoAddr1, ipv4MappedIPv6Addr1},
+ remoteAddr: ipv4MappedIPv6Addr2,
+ expectedLocalAddr: ipv4MappedIPv6Addr1,
+ },
- // Test Rule 7 of RFC 6724 section 5.
+ // Test Rule 7 of RFC 6724 section 5 (prefer temporary addresses).
{
name: "Temp Global most preferred (last address)",
slaacPrefixForTempAddrBeforeNICAddrAdd: prefix1,
nicAddrs: []tcpip.Address{linkLocalAddr1, uniqueLocalAddr1, globalAddr1},
- connectAddr: globalAddr2,
+ remoteAddr: globalAddr2,
expectedLocalAddr: tempGlobalAddr1,
},
{
name: "Temp Global most preferred (first address)",
nicAddrs: []tcpip.Address{linkLocalAddr1, uniqueLocalAddr1, globalAddr1},
slaacPrefixForTempAddrAfterNICAddrAdd: prefix1,
- connectAddr: globalAddr2,
+ remoteAddr: globalAddr2,
expectedLocalAddr: tempGlobalAddr1,
},
+ // Test Rule 8 of RFC 6724 section 5 (use longest matching prefix).
+ {
+ name: "Longest prefix matched most preferred (first address)",
+ nicAddrs: []tcpip.Address{globalAddr2, globalAddr1},
+ remoteAddr: globalAddr3,
+ expectedLocalAddr: globalAddr2,
+ },
+ {
+ name: "Longest prefix matched most preferred (last address)",
+ nicAddrs: []tcpip.Address{globalAddr1, globalAddr2},
+ remoteAddr: globalAddr3,
+ expectedLocalAddr: globalAddr2,
+ },
+
// Test returning the endpoint that is closest to the front when
// candidate addresses are "equal" from the perspective of RFC 6724
// section 5.
{
name: "Unique Local for Global",
nicAddrs: []tcpip.Address{linkLocalAddr1, uniqueLocalAddr1, uniqueLocalAddr2},
- connectAddr: globalAddr2,
+ remoteAddr: globalAddr2,
expectedLocalAddr: uniqueLocalAddr1,
},
{
name: "Link Local for Global",
nicAddrs: []tcpip.Address{linkLocalAddr1, linkLocalAddr2},
- connectAddr: globalAddr2,
+ remoteAddr: globalAddr2,
expectedLocalAddr: linkLocalAddr1,
},
{
name: "Link Local for Unique Local",
nicAddrs: []tcpip.Address{linkLocalAddr1, linkLocalAddr2},
- connectAddr: uniqueLocalAddr2,
+ remoteAddr: uniqueLocalAddr2,
expectedLocalAddr: linkLocalAddr1,
},
{
name: "Temp Global for Global",
slaacPrefixForTempAddrBeforeNICAddrAdd: prefix1,
slaacPrefixForTempAddrAfterNICAddrAdd: prefix2,
- connectAddr: globalAddr1,
+ remoteAddr: globalAddr1,
expectedLocalAddr: tempGlobalAddr2,
},
}
@@ -2898,12 +2958,6 @@ func TestIPv6SourceAddressSelectionScopeAndSameAddress(t *testing.T) {
if err := s.CreateNIC(nicID, e); err != nil {
t.Fatalf("CreateNIC(%d, _) = %s", nicID, err)
}
- s.SetRouteTable([]tcpip.Route{{
- Destination: header.IPv6EmptySubnet,
- Gateway: llAddr3,
- NIC: nicID,
- }})
- s.AddLinkAddress(nicID, llAddr3, linkAddr3)
if test.slaacPrefixForTempAddrBeforeNICAddrAdd != (tcpip.AddressWithPrefix{}) {
e.InjectInbound(header.IPv6ProtocolNumber, raBufWithPI(llAddr3, 0, test.slaacPrefixForTempAddrBeforeNICAddrAdd, true, true, lifetimeSeconds, lifetimeSeconds))
@@ -2923,7 +2977,23 @@ func TestIPv6SourceAddressSelectionScopeAndSameAddress(t *testing.T) {
t.FailNow()
}
- if got := addrForNewConnectionTo(t, s, tcpip.FullAddress{Addr: test.connectAddr, NIC: nicID, Port: 1234}); got != test.expectedLocalAddr {
+ netEP, err := s.GetNetworkEndpoint(nicID, header.IPv6ProtocolNumber)
+ if err != nil {
+ t.Fatalf("s.GetNetworkEndpoint(%d, %d): %s", nicID, header.IPv6ProtocolNumber, err)
+ }
+
+ addressableEndpoint, ok := netEP.(stack.AddressableEndpoint)
+ if !ok {
+ t.Fatal("network endpoint is not addressable")
+ }
+
+ addressEP := addressableEndpoint.AcquireOutgoingPrimaryAddress(test.remoteAddr, false /* allowExpired */)
+ if addressEP == nil {
+ t.Fatal("expected a non-nil address endpoint")
+ }
+ defer addressEP.DecRef()
+
+ if got := addressEP.AddressWithPrefix().Address; got != test.expectedLocalAddr {
t.Errorf("got local address = %s, want = %s", got, test.expectedLocalAddr)
}
})
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-26 17:18:07 +0000