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| author | Arthur Sfez <asfez@google.com> | 2020-12-02 14:09:40 -0800 |
|---|---|---|
| committer | gVisor bot <gvisor-bot@google.com> | 2020-12-02 14:12:01 -0800 |
| commit | 6a26930eeb717f758ea7ba555df06d9028b24ec8 (patch) | |
| tree | 49f3a27f5fbbe02cfe0dfad95d3a32e3036e03dc /pkg/tcpip/network/fragmentation/fragmentation.go | |
| parent | 24d6eb58e51be706ae66db31d027e2400307152f (diff) | |
Abandon reassembly of a packet if fragments overlap
However, receiving duplicated fragments will not cause reassembly to
fail. This is what Linux does too:
https://github.com/torvalds/linux/blob/38525c6/net/ipv4/inet_fragment.c#L355
PiperOrigin-RevId: 345309546
Diffstat (limited to 'pkg/tcpip/network/fragmentation/fragmentation.go')
| -rw-r--r-- | pkg/tcpip/network/fragmentation/fragmentation.go | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/pkg/tcpip/network/fragmentation/fragmentation.go b/pkg/tcpip/network/fragmentation/fragmentation.go index c75ca7d71..d31296a41 100644 --- a/pkg/tcpip/network/fragmentation/fragmentation.go +++ b/pkg/tcpip/network/fragmentation/fragmentation.go @@ -46,9 +46,13 @@ const ( ) var ( - // ErrInvalidArgs indicates to the caller that that an invalid argument was + // ErrInvalidArgs indicates to the caller that an invalid argument was // provided. ErrInvalidArgs = errors.New("invalid args") + + // ErrFragmentOverlap indicates that, during reassembly, a fragment overlaps + // with another one. + ErrFragmentOverlap = errors.New("overlapping fragments") ) // FragmentID is the identifier for a fragment. |