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-rw-r--r--pkg/tcpip/network/ip_test.go40
-rw-r--r--pkg/tcpip/network/ipv4/ipv4.go14
-rw-r--r--pkg/tcpip/network/ipv6/icmp_test.go4
-rw-r--r--pkg/tcpip/network/ipv6/ipv6.go8
4 files changed, 45 insertions, 21 deletions
diff --git a/pkg/tcpip/network/ip_test.go b/pkg/tcpip/network/ip_test.go
index bd63e0289..771b9173a 100644
--- a/pkg/tcpip/network/ip_test.go
+++ b/pkg/tcpip/network/ip_test.go
@@ -88,6 +88,7 @@ type testObject struct {
dataCalls int
controlCalls int
+ rawCalls int
}
// checkValues verifies that the transport protocol, data contents, src & dst
@@ -148,6 +149,10 @@ func (t *testObject) DeliverTransportError(local, remote tcpip.Address, net tcpi
t.controlCalls++
}
+func (t *testObject) DeliverRawPacket(tcpip.TransportProtocolNumber, *stack.PacketBuffer) {
+ t.rawCalls++
+}
+
// Attach is only implemented to satisfy the LinkEndpoint interface.
func (*testObject) Attach(stack.NetworkDispatcher) {}
@@ -717,7 +722,10 @@ func TestReceive(t *testing.T) {
}
test.handlePacket(t, ep, &nic)
if nic.testObject.dataCalls != 1 {
- t.Errorf("Bad number of data calls: got %x, want 1", nic.testObject.dataCalls)
+ t.Errorf("Bad number of data calls: got %d, want 1", nic.testObject.dataCalls)
+ }
+ if nic.testObject.rawCalls != 1 {
+ t.Errorf("Bad number of raw calls: got %d, want 1", nic.testObject.rawCalls)
}
if got := stat.Value(); got != 1 {
t.Errorf("got s.Stats().IP.PacketsReceived.Value() = %d, want = 1", got)
@@ -968,7 +976,10 @@ func TestIPv4FragmentationReceive(t *testing.T) {
ep.HandlePacket(pkt)
if nic.testObject.dataCalls != 0 {
- t.Fatalf("Bad number of data calls: got %x, want 0", nic.testObject.dataCalls)
+ t.Fatalf("Bad number of data calls: got %d, want 0", nic.testObject.dataCalls)
+ }
+ if nic.testObject.rawCalls != 0 {
+ t.Errorf("Bad number of raw calls: got %d, want 0", nic.testObject.rawCalls)
}
// Send second segment.
@@ -977,7 +988,10 @@ func TestIPv4FragmentationReceive(t *testing.T) {
})
ep.HandlePacket(pkt)
if nic.testObject.dataCalls != 1 {
- t.Fatalf("Bad number of data calls: got %x, want 1", nic.testObject.dataCalls)
+ t.Fatalf("Bad number of data calls: got %d, want 1", nic.testObject.dataCalls)
+ }
+ if nic.testObject.rawCalls != 1 {
+ t.Errorf("Bad number of raw calls: got %d, want 1", nic.testObject.rawCalls)
}
}
@@ -1310,7 +1324,7 @@ func TestWriteHeaderIncludedPacket(t *testing.T) {
Protocol: transportProto,
TTL: ipv4.DefaultTTL,
SrcAddr: src,
- DstAddr: header.IPv4Any,
+ DstAddr: remoteIPv4Addr,
})
return hdr.View().ToVectorisedView()
},
@@ -1351,7 +1365,7 @@ func TestWriteHeaderIncludedPacket(t *testing.T) {
Protocol: transportProto,
TTL: ipv4.DefaultTTL,
SrcAddr: src,
- DstAddr: header.IPv4Any,
+ DstAddr: remoteIPv4Addr,
})
ip.SetHeaderLength(header.IPv4MinimumSize - 1)
return hdr.View().ToVectorisedView()
@@ -1370,7 +1384,7 @@ func TestWriteHeaderIncludedPacket(t *testing.T) {
Protocol: transportProto,
TTL: ipv4.DefaultTTL,
SrcAddr: src,
- DstAddr: header.IPv4Any,
+ DstAddr: remoteIPv4Addr,
})
return buffer.View(ip[:len(ip)-1]).ToVectorisedView()
},
@@ -1388,7 +1402,7 @@ func TestWriteHeaderIncludedPacket(t *testing.T) {
Protocol: transportProto,
TTL: ipv4.DefaultTTL,
SrcAddr: src,
- DstAddr: header.IPv4Any,
+ DstAddr: remoteIPv4Addr,
})
return buffer.View(ip).ToVectorisedView()
},
@@ -1430,7 +1444,7 @@ func TestWriteHeaderIncludedPacket(t *testing.T) {
Protocol: transportProto,
TTL: ipv4.DefaultTTL,
SrcAddr: src,
- DstAddr: header.IPv4Any,
+ DstAddr: remoteIPv4Addr,
Options: ipv4Options,
})
return hdr.View().ToVectorisedView()
@@ -1469,7 +1483,7 @@ func TestWriteHeaderIncludedPacket(t *testing.T) {
Protocol: transportProto,
TTL: ipv4.DefaultTTL,
SrcAddr: src,
- DstAddr: header.IPv4Any,
+ DstAddr: remoteIPv4Addr,
Options: ipv4Options,
})
vv := buffer.View(ip).ToVectorisedView()
@@ -1515,7 +1529,7 @@ func TestWriteHeaderIncludedPacket(t *testing.T) {
TransportProtocol: transportProto,
HopLimit: ipv6.DefaultTTL,
SrcAddr: src,
- DstAddr: header.IPv4Any,
+ DstAddr: remoteIPv6Addr,
})
return hdr.View().ToVectorisedView()
},
@@ -1560,7 +1574,7 @@ func TestWriteHeaderIncludedPacket(t *testing.T) {
TransportProtocol: tcpip.TransportProtocolNumber(header.IPv6FragmentExtHdrIdentifier),
HopLimit: ipv6.DefaultTTL,
SrcAddr: src,
- DstAddr: header.IPv4Any,
+ DstAddr: remoteIPv6Addr,
})
return hdr.View().ToVectorisedView()
},
@@ -1595,7 +1609,7 @@ func TestWriteHeaderIncludedPacket(t *testing.T) {
TransportProtocol: transportProto,
HopLimit: ipv6.DefaultTTL,
SrcAddr: src,
- DstAddr: header.IPv4Any,
+ DstAddr: remoteIPv6Addr,
})
return buffer.View(ip).ToVectorisedView()
},
@@ -1630,7 +1644,7 @@ func TestWriteHeaderIncludedPacket(t *testing.T) {
TransportProtocol: transportProto,
HopLimit: ipv6.DefaultTTL,
SrcAddr: src,
- DstAddr: header.IPv4Any,
+ DstAddr: remoteIPv4Addr,
})
return buffer.View(ip[:len(ip)-1]).ToVectorisedView()
},
diff --git a/pkg/tcpip/network/ipv4/ipv4.go b/pkg/tcpip/network/ipv4/ipv4.go
index f08b008ac..44c85bdb8 100644
--- a/pkg/tcpip/network/ipv4/ipv4.go
+++ b/pkg/tcpip/network/ipv4/ipv4.go
@@ -614,10 +614,6 @@ func (e *endpoint) WriteHeaderIncludedPacket(r *stack.Route, pkt *stack.PacketBu
ipH.SetSourceAddress(r.LocalAddress())
}
- // Set the destination. If the packet already included a destination, it will
- // be part of the route anyways.
- ipH.SetDestinationAddress(r.RemoteAddress())
-
// Set the packet ID when zero.
if ipH.ID() == 0 {
// RFC 6864 section 4.3 mandates uniqueness of ID values for
@@ -860,6 +856,13 @@ func (e *endpoint) handleLocalPacket(pkt *stack.PacketBuffer, canSkipRXChecksum
}
func (e *endpoint) handleValidatedPacket(h header.IPv4, pkt *stack.PacketBuffer, inNICName string) {
+ // Raw socket packets are delivered based solely on the transport protocol
+ // number. We only require that the packet be valid IPv4, and that they not
+ // be fragmented.
+ if !h.More() && h.FragmentOffset() == 0 {
+ e.dispatcher.DeliverRawPacket(h.TransportProtocol(), pkt)
+ }
+
pkt.NICID = e.nic.ID()
stats := e.stats
stats.ip.ValidPacketsReceived.Increment()
@@ -995,6 +998,9 @@ func (e *endpoint) handleValidatedPacket(h header.IPv4, pkt *stack.PacketBuffer,
// to do it here.
h.SetTotalLength(uint16(pkt.Data().Size() + len(h)))
h.SetFlagsFragmentOffset(0, 0)
+
+ // Now that the packet is reassembled, it can be sent to raw sockets.
+ e.dispatcher.DeliverRawPacket(h.TransportProtocol(), pkt)
}
stats.ip.PacketsDelivered.Increment()
diff --git a/pkg/tcpip/network/ipv6/icmp_test.go b/pkg/tcpip/network/ipv6/icmp_test.go
index c2e9544c1..7c2a3e56b 100644
--- a/pkg/tcpip/network/ipv6/icmp_test.go
+++ b/pkg/tcpip/network/ipv6/icmp_test.go
@@ -90,6 +90,10 @@ func (*stubDispatcher) DeliverTransportPacket(tcpip.TransportProtocolNumber, *st
return stack.TransportPacketHandled
}
+func (*stubDispatcher) DeliverRawPacket(tcpip.TransportProtocolNumber, *stack.PacketBuffer) {
+ // No-op.
+}
+
var _ stack.NetworkInterface = (*testInterface)(nil)
type testInterface struct {
diff --git a/pkg/tcpip/network/ipv6/ipv6.go b/pkg/tcpip/network/ipv6/ipv6.go
index 8c8fafcda..f5693defe 100644
--- a/pkg/tcpip/network/ipv6/ipv6.go
+++ b/pkg/tcpip/network/ipv6/ipv6.go
@@ -928,10 +928,6 @@ func (e *endpoint) WriteHeaderIncludedPacket(r *stack.Route, pkt *stack.PacketBu
ipH.SetSourceAddress(r.LocalAddress())
}
- // Set the destination. If the packet already included a destination, it will
- // be part of the route anyways.
- ipH.SetDestinationAddress(r.RemoteAddress())
-
// Populate the packet buffer's network header and don't allow an invalid
// packet to be sent.
//
@@ -1128,6 +1124,10 @@ func (e *endpoint) handleLocalPacket(pkt *stack.PacketBuffer, canSkipRXChecksum
}
func (e *endpoint) handleValidatedPacket(h header.IPv6, pkt *stack.PacketBuffer, inNICName string) {
+ // Raw socket packets are delivered based solely on the transport protocol
+ // number. We only require that the packet be valid IPv6.
+ e.dispatcher.DeliverRawPacket(h.TransportProtocol(), pkt)
+
pkt.NICID = e.nic.ID()
stats := e.stats.ip
stats.ValidPacketsReceived.Increment()
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-27 17:13:17 +0000