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| author | Toshi Kikuchi <toshik@google.com> | 2020-12-12 15:29:15 -0800 |
|---|---|---|
| committer | gVisor bot <gvisor-bot@google.com> | 2020-12-12 15:32:03 -0800 |
| commit | 08d36b6c630846c4d9d812c25966639513ecd211 (patch) | |
| tree | 808d9c9bf14337a6d4ab9755e2c6c81012d654b2 /pkg/tcpip/network/fragmentation/fragmentation.go | |
| parent | 4aef908c92c8530222fe547c154e2ee45a130b1b (diff) | |
Reduce the memory overhead in IP fragment management
- Deep-copy pkt.Data and hold it instead of shallow-copy (vv.Clone).
This allows the pkt's backing array, which includes the header portion,
to be freed.
- Remove fragHeap. The fragments are now held in holes struct instead.
- Stop reserving the initial capacity of holes slice.
PiperOrigin-RevId: 347198744
Diffstat (limited to 'pkg/tcpip/network/fragmentation/fragmentation.go')
| -rw-r--r-- | pkg/tcpip/network/fragmentation/fragmentation.go | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/pkg/tcpip/network/fragmentation/fragmentation.go b/pkg/tcpip/network/fragmentation/fragmentation.go index d31296a41..1af87d713 100644 --- a/pkg/tcpip/network/fragmentation/fragmentation.go +++ b/pkg/tcpip/network/fragmentation/fragmentation.go @@ -53,6 +53,10 @@ var ( // ErrFragmentOverlap indicates that, during reassembly, a fragment overlaps // with another one. ErrFragmentOverlap = errors.New("overlapping fragments") + + // ErrFragmentConflict indicates that, during reassembly, some fragments are + // in conflict with one another. + ErrFragmentConflict = errors.New("conflicting fragments") ) // FragmentID is the identifier for a fragment. |