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authorgVisor bot <gvisor-bot@google.com>2020-03-24 16:11:16 +0000
committergVisor bot <gvisor-bot@google.com>2020-03-24 16:11:16 +0000
commit277285086b0f8630bfacc155746a15684ea01548 (patch)
tree8a7bb7dca00e9506b8005370454ac4d1e0bfe11e /pkg/tcpip/stack/packet_buffer_state.go
parentf85e510e0beb51f7807c4a8129c6f9a9b4f916d2 (diff)
parent7e4073af12bed2c76bc5757ef3e5fbfba75308a0 (diff)
Merge release-20200219.0-220-g7e4073a (automated)
Diffstat (limited to 'pkg/tcpip/stack/packet_buffer_state.go')
-rwxr-xr-xpkg/tcpip/stack/packet_buffer_state.go26
1 files changed, 26 insertions, 0 deletions
diff --git a/pkg/tcpip/stack/packet_buffer_state.go b/pkg/tcpip/stack/packet_buffer_state.go
new file mode 100755
index 000000000..76602549e
--- /dev/null
+++ b/pkg/tcpip/stack/packet_buffer_state.go
@@ -0,0 +1,26 @@
+// Copyright 2019 The gVisor Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+package stack
+
+import "gvisor.dev/gvisor/pkg/tcpip/buffer"
+
+// beforeSave is invoked by stateify.
+func (pk *PacketBuffer) beforeSave() {
+ // Non-Data fields may be slices of the Data field. This causes
+ // problems for SR, so during save we make each header independent.
+ pk.Header = pk.Header.DeepCopy()
+ pk.LinkHeader = append(buffer.View(nil), pk.LinkHeader...)
+ pk.NetworkHeader = append(buffer.View(nil), pk.NetworkHeader...)
+ pk.TransportHeader = append(buffer.View(nil), pk.TransportHeader...)
+}