Add basic iptables structures to netstack.

Change-Id: Ib589906175a59dae315405a28f2d7f525ff8877f

1 files changed, 35 insertions, 0 deletions

diff --git a/pkg/tcpip/iptables/targets.go b/pkg/tcpip/iptables/targets.go
new file mode 100644
index 000000000..028978e3a
--- /dev/null
+++ b/pkg/tcpip/iptables/targets.go
@@ -0,0 +1,35 @@
+// 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 iptables
+
+import "gvisor.googlesource.com/gvisor/pkg/tcpip/buffer"
+
+// This file contains various Targets.
+
+// UnconditionalAcceptTarget accepts all packets.
+type UnconditionalAcceptTarget struct{}
+
+// Action implements Target.Action.
+func (_ UnconditionalAcceptTarget) Action(packet buffer.VectorisedView) (Verdict, string) {
+	return Accept, ""
+}
+
+// UnconditionalDropTarget denies all packets.
+type UnconditionalDropTarget struct{}
+
+// Action implements Target.Action.
+func (_ UnconditionalDropTarget) Action(packet buffer.VectorisedView) (Verdict, string) {
+	return Drop, ""
+}