Merge pull request #1528 from kevinGC:iptables-write

PiperOrigin-RevId: 289479774

1 files changed, 15 insertions, 1 deletions

diff --git a/pkg/tcpip/iptables/targets.go b/pkg/tcpip/iptables/targets.go
index 19a7f77e3..b94a4c941 100644
--- a/pkg/tcpip/iptables/targets.go
+++ b/pkg/tcpip/iptables/targets.go
@@ -16,7 +16,10 @@
 
 package iptables
 
-import "gvisor.dev/gvisor/pkg/tcpip/buffer"
+import (
+	"gvisor.dev/gvisor/pkg/log"
+	"gvisor.dev/gvisor/pkg/tcpip/buffer"
+)
 
 // UnconditionalAcceptTarget accepts all packets.
 type UnconditionalAcceptTarget struct{}
@@ -33,3 +36,14 @@ type UnconditionalDropTarget struct{}
 func (UnconditionalDropTarget) Action(packet buffer.VectorisedView) (Verdict, string) {
 	return Drop, ""
 }
+
+// ErrorTarget logs an error and drops the packet. It represents a target that
+// should be unreachable.
+type ErrorTarget struct{}
+
+// Action implements Target.Action.
+func (ErrorTarget) Action(packet buffer.VectorisedView) (Verdict, string) {
+	log.Warningf("ErrorTarget triggered.")
+	return Drop, ""
+
+}