diff options
| author | Julian Elischer <jrelis@google.com> | 2020-09-30 13:03:15 -0700 |
|---|---|---|
| committer | gVisor bot <gvisor-bot@google.com> | 2020-09-30 13:05:14 -0700 |
| commit | 694d6ae32fbed0a62bc9d73f279db205815681e3 (patch) | |
| tree | 1e1379b0b9541eb68b61f397a18abdc04f990850 /pkg/tcpip/network/ipv4/ipv4.go | |
| parent | 3e450a991b844a6b45fc57e59bfb0030ba0d0f4c (diff) | |
Use the ICMP error response facility
Add code in IPv6 to send ICMP packets while processing extension headers.
Add some accounting in processing IPV6 Extension headers which
allows us to report meaningful information back in ICMP parameter
problem packets.
IPv4 also needs to send a message when an unsupported protocol
is requested.
Add some tests to generate both ipv4 and ipv6 packets with
various errors and check the responses.
Add some new checkers and cleanup some inconsistencies in
the messages in that file.
Add new error types for the ICMPv4/6 generators.
Fix a bug in the ICMPv4 generator that stopped it from generating
"Unknown protocol" messages.
Updates #2211
PiperOrigin-RevId: 334661716
Diffstat (limited to 'pkg/tcpip/network/ipv4/ipv4.go')
| -rw-r--r-- | pkg/tcpip/network/ipv4/ipv4.go | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/pkg/tcpip/network/ipv4/ipv4.go b/pkg/tcpip/network/ipv4/ipv4.go index ad7a767a4..34d3f8474 100644 --- a/pkg/tcpip/network/ipv4/ipv4.go +++ b/pkg/tcpip/network/ipv4/ipv4.go @@ -567,6 +567,12 @@ func (e *endpoint) HandlePacket(r *stack.Route, pkt *stack.PacketBuffer) { // (e.g., UDP) is unable to demultiplex the datagram but has no // protocol mechanism to inform the sender. _ = returnError(r, &icmpReasonPortUnreachable{}, pkt) + case stack.TransportPacketProtocolUnreachable: + // As per RFC: 1122 Section 3.2.2.1 + // A host SHOULD generate Destination Unreachable messages with code: + // 2 (Protocol Unreachable), when the designated transport protocol + // is not supported + _ = returnError(r, &icmpReasonProtoUnreachable{}, pkt) default: panic(fmt.Sprintf("unrecognized result from DeliverTransportPacket = %d", res)) } |