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-rw-r--r--pkg/tcpip/stack/transport_demuxer_test.go107
1 files changed, 86 insertions, 21 deletions
diff --git a/pkg/tcpip/stack/transport_demuxer_test.go b/pkg/tcpip/stack/transport_demuxer_test.go
index 75c119c99..c65b0c632 100644
--- a/pkg/tcpip/stack/transport_demuxer_test.go
+++ b/pkg/tcpip/stack/transport_demuxer_test.go
@@ -31,12 +31,14 @@ import (
)
const (
- stackV6Addr = "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01"
- testV6Addr = "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02"
+ testSrcAddrV6 = "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01"
+ testDstAddrV6 = "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02"
- stackAddr = "\x0a\x00\x00\x01"
- stackPort = 1234
- testPort = 4096
+ testSrcAddrV4 = "\x0a\x00\x00\x01"
+ testDstAddrV4 = "\x0a\x00\x00\x02"
+
+ testDstPort = 1234
+ testSrcPort = 4096
)
type testContext struct {
@@ -59,11 +61,11 @@ func newDualTestContextMultiNIC(t *testing.T, mtu uint32, linkEpIDs []tcpip.NICI
}
linkEps[linkEpID] = channelEp
- if err := s.AddAddress(linkEpID, ipv4.ProtocolNumber, stackAddr); err != nil {
+ if err := s.AddAddress(linkEpID, ipv4.ProtocolNumber, testDstAddrV4); err != nil {
t.Fatalf("AddAddress IPv4 failed: %s", err)
}
- if err := s.AddAddress(linkEpID, ipv6.ProtocolNumber, stackV6Addr); err != nil {
+ if err := s.AddAddress(linkEpID, ipv6.ProtocolNumber, testDstAddrV6); err != nil {
t.Fatalf("AddAddress IPv6 failed: %s", err)
}
}
@@ -91,6 +93,47 @@ func newPayload() []byte {
return b
}
+func (c *testContext) sendV4Packet(payload []byte, h *headers, linkEpID tcpip.NICID) {
+ buf := buffer.NewView(header.UDPMinimumSize + header.IPv4MinimumSize + len(payload))
+ payloadStart := len(buf) - len(payload)
+ copy(buf[payloadStart:], payload)
+
+ // Initialize the IP header.
+ ip := header.IPv4(buf)
+ ip.Encode(&header.IPv4Fields{
+ IHL: header.IPv4MinimumSize,
+ TOS: 0x80,
+ TotalLength: uint16(len(buf)),
+ TTL: 65,
+ Protocol: uint8(udp.ProtocolNumber),
+ SrcAddr: testSrcAddrV4,
+ DstAddr: testDstAddrV4,
+ })
+ ip.SetChecksum(^ip.CalculateChecksum())
+
+ // Initialize the UDP header.
+ u := header.UDP(buf[header.IPv4MinimumSize:])
+ u.Encode(&header.UDPFields{
+ SrcPort: h.srcPort,
+ DstPort: h.dstPort,
+ Length: uint16(header.UDPMinimumSize + len(payload)),
+ })
+
+ // Calculate the UDP pseudo-header checksum.
+ xsum := header.PseudoHeaderChecksum(udp.ProtocolNumber, testSrcAddrV4, testDstAddrV4, uint16(len(u)))
+
+ // Calculate the UDP checksum and set it.
+ xsum = header.Checksum(payload, xsum)
+ u.SetChecksum(^u.CalculateChecksum(xsum))
+
+ // Inject packet.
+ c.linkEps[linkEpID].InjectInbound(ipv4.ProtocolNumber, stack.PacketBuffer{
+ Data: buf.ToVectorisedView(),
+ NetworkHeader: buffer.View(ip),
+ TransportHeader: buffer.View(u),
+ })
+}
+
func (c *testContext) sendV6Packet(payload []byte, h *headers, linkEpID tcpip.NICID) {
// Allocate a buffer for data and headers.
buf := buffer.NewView(header.UDPMinimumSize + header.IPv6MinimumSize + len(payload))
@@ -102,8 +145,8 @@ func (c *testContext) sendV6Packet(payload []byte, h *headers, linkEpID tcpip.NI
PayloadLength: uint16(header.UDPMinimumSize + len(payload)),
NextHeader: uint8(udp.ProtocolNumber),
HopLimit: 65,
- SrcAddr: testV6Addr,
- DstAddr: stackV6Addr,
+ SrcAddr: testSrcAddrV6,
+ DstAddr: testDstAddrV6,
})
// Initialize the UDP header.
@@ -115,7 +158,7 @@ func (c *testContext) sendV6Packet(payload []byte, h *headers, linkEpID tcpip.NI
})
// Calculate the UDP pseudo-header checksum.
- xsum := header.PseudoHeaderChecksum(udp.ProtocolNumber, testV6Addr, stackV6Addr, uint16(len(u)))
+ xsum := header.PseudoHeaderChecksum(udp.ProtocolNumber, testSrcAddrV6, testDstAddrV6, uint16(len(u)))
// Calculate the UDP checksum and set it.
xsum = header.Checksum(payload, xsum)
@@ -123,7 +166,9 @@ func (c *testContext) sendV6Packet(payload []byte, h *headers, linkEpID tcpip.NI
// Inject packet.
c.linkEps[linkEpID].InjectInbound(ipv6.ProtocolNumber, stack.PacketBuffer{
- Data: buf.ToVectorisedView(),
+ Data: buf.ToVectorisedView(),
+ NetworkHeader: buffer.View(ip),
+ TransportHeader: buffer.View(u),
})
}
@@ -227,9 +272,12 @@ func TestBindToDeviceDistribution(t *testing.T) {
},
},
} {
- t.Run(test.name, func(t *testing.T) {
+ for protoName, netProtoNum := range map[string]tcpip.NetworkProtocolNumber{
+ "IPv4": ipv4.ProtocolNumber,
+ "IPv6": ipv6.ProtocolNumber,
+ } {
for device, wantDistribution := range test.wantDistributions {
- t.Run(string(device), func(t *testing.T) {
+ t.Run(test.name+protoName+string(device), func(t *testing.T) {
var devices []tcpip.NICID
for d := range test.wantDistributions {
devices = append(devices, d)
@@ -248,7 +296,7 @@ func TestBindToDeviceDistribution(t *testing.T) {
defer close(ch)
var err *tcpip.Error
- ep, err := c.s.NewEndpoint(udp.ProtocolNumber, ipv6.ProtocolNumber, &wq)
+ ep, err := c.s.NewEndpoint(udp.ProtocolNumber, netProtoNum, &wq)
if err != nil {
t.Fatalf("NewEndpoint failed: %s", err)
}
@@ -269,7 +317,17 @@ func TestBindToDeviceDistribution(t *testing.T) {
if err := ep.SetSockOpt(bindToDeviceOption); err != nil {
t.Fatalf("SetSockOpt(%#v) on endpoint %d failed: %s", bindToDeviceOption, i, err)
}
- if err := ep.Bind(tcpip.FullAddress{Addr: stackV6Addr, Port: stackPort}); err != nil {
+
+ var dstAddr tcpip.Address
+ switch netProtoNum {
+ case ipv4.ProtocolNumber:
+ dstAddr = testDstAddrV4
+ case ipv6.ProtocolNumber:
+ dstAddr = testDstAddrV6
+ default:
+ t.Fatalf("unexpected protocol number: %d", netProtoNum)
+ }
+ if err := ep.Bind(tcpip.FullAddress{Addr: dstAddr, Port: testDstPort}); err != nil {
t.Fatalf("ep.Bind(...) on endpoint %d failed: %s", i, err)
}
}
@@ -285,11 +343,18 @@ func TestBindToDeviceDistribution(t *testing.T) {
// Send a packet.
port := uint16(i % nports)
payload := newPayload()
- c.sendV6Packet(payload,
- &headers{
- srcPort: testPort + port,
- dstPort: stackPort},
- device)
+ hdrs := &headers{
+ srcPort: testSrcPort + port,
+ dstPort: testDstPort,
+ }
+ switch netProtoNum {
+ case ipv4.ProtocolNumber:
+ c.sendV4Packet(payload, hdrs, device)
+ case ipv6.ProtocolNumber:
+ c.sendV6Packet(payload, hdrs, device)
+ default:
+ t.Fatalf("unexpected protocol number: %d", netProtoNum)
+ }
ep := <-pollChannel
if _, _, err := ep.Read(nil); err != nil {
@@ -320,6 +385,6 @@ func TestBindToDeviceDistribution(t *testing.T) {
}
})
}
- })
+ }
}
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-16 12:53:29 +0000