Decrement TTL after IngressACL. (#449)

openconfig · Jul 12, 2024 · 2c43824 · 2c43824
1 parent 412064a
commit 2c43824
Showing 1 changed file with 7 additions and 6 deletions.
diff --git a/dataplane/saiserver/ports.go b/dataplane/saiserver/ports.go
@@ -91,12 +91,13 @@ func getPreIngressPipeline() []*fwdpb.ActionDesc {
 
 func getL3Pipeline() []*fwdpb.ActionDesc {
 	return []*fwdpb.ActionDesc{
-		fwdconfig.Action(fwdconfig.DecapAction(fwdpb.PacketHeaderId_PACKET_HEADER_ID_ETHERNET)).Build(), // Decap L2 header.
-		fwdconfig.Action(fwdconfig.LookupAction(IngressActionTable)).Build(),                            // Run ingress action.
-		fwdconfig.Action(fwdconfig.LookupAction(FIBSelectorTable)).Build(),                              // Lookup in FIB.
-		fwdconfig.Action(fwdconfig.EncapAction(fwdpb.PacketHeaderId_PACKET_HEADER_ID_ETHERNET)).Build(), // Encap L2 header.
-		fwdconfig.Action(fwdconfig.LookupAction(outputIfaceTable)).Build(),                              // Match interface to port
-		fwdconfig.Action(fwdconfig.LookupAction(NeighborTable)).Build(),                                 // Lookup in the neighbor table.
+		fwdconfig.Action(fwdconfig.DecapAction(fwdpb.PacketHeaderId_PACKET_HEADER_ID_ETHERNET)).Build(),                                                         // Decap L2 header.
+		fwdconfig.Action(fwdconfig.LookupAction(IngressActionTable)).Build(),                                                                                    // Run ingress action.
+		fwdconfig.Action(fwdconfig.UpdateAction(fwdpb.UpdateType_UPDATE_TYPE_DEC, fwdpb.PacketFieldNum_PACKET_FIELD_NUM_IP_HOP).WithValue([]byte{0x1})).Build(), // Decrement TTL.
+		fwdconfig.Action(fwdconfig.LookupAction(FIBSelectorTable)).Build(),                                                                                      // Lookup in FIB.
+		fwdconfig.Action(fwdconfig.EncapAction(fwdpb.PacketHeaderId_PACKET_HEADER_ID_ETHERNET)).Build(),                                                         // Encap L2 header.
+		fwdconfig.Action(fwdconfig.LookupAction(outputIfaceTable)).Build(),                                                                                      // Match interface to port
+		fwdconfig.Action(fwdconfig.LookupAction(NeighborTable)).Build(),                                                                                         // Lookup in the neighbor table.
 	}
 }