diff options
| author | Toshi Kikuchi <toshik@google.com> | 2020-09-12 23:19:34 -0700 |
|---|---|---|
| committer | gVisor bot <gvisor-bot@google.com> | 2020-09-12 23:21:27 -0700 |
| commit | b6ca96b9b9e71ba57653cf9d3ef0767771949378 (patch) | |
| tree | 1be79e4ee11876cfb1742b6514ab7dc70fc93c29 /pkg/tcpip/header/udp.go | |
| parent | 3ca73841d7ec1218cab21f7be2433f739be5d367 (diff) | |
Cap reassembled IPv6 packets at 65535 octets
IPv4 can accept 65536-octet reassembled packets.
Test:
- ipv4_test.TestInvalidFragments
- ipv4_test.TestReceiveFragments
- ipv6.TestInvalidIPv6Fragments
- ipv6.TestReceiveIPv6Fragments
Fixes #3770
PiperOrigin-RevId: 331382977
Diffstat (limited to 'pkg/tcpip/header/udp.go')
| -rw-r--r-- | pkg/tcpip/header/udp.go | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/pkg/tcpip/header/udp.go b/pkg/tcpip/header/udp.go index 9339d637f..98bdd29db 100644 --- a/pkg/tcpip/header/udp.go +++ b/pkg/tcpip/header/udp.go @@ -16,6 +16,7 @@ package header import ( "encoding/binary" + "math" "gvisor.dev/gvisor/pkg/tcpip" ) @@ -55,6 +56,10 @@ const ( // UDPMinimumSize is the minimum size of a valid UDP packet. UDPMinimumSize = 8 + // UDPMaximumSize is the maximum size of a valid UDP packet. The length field + // in the UDP header is 16 bits as per RFC 768. + UDPMaximumSize = math.MaxUint16 + // UDPProtocolNumber is UDP's transport protocol number. UDPProtocolNumber tcpip.TransportProtocolNumber = 17 ) |