ip: reassembly - add a way to disable for forus

Add API to disable full reassembly of "forus" packets. Mark packets
passing through ip[4|6]-local nodes with a new buffer flag and check for
that flag in reassembly.

Enable IP6 "forus" full reassembly by default to be consistent with
existing IP4 setting.

Type: improvement
Change-Id: I7067792fcd4304182654237968e4c4d9293c6143
Signed-off-by: Klement Sekera <ksekera@cisco.com>
diff --git a/src/vnet/ip/reass/ip6_full_reass.h b/src/vnet/ip/reass/ip6_full_reass.h
index 546075b..f66cb67 100644
--- a/src/vnet/ip/reass/ip6_full_reass.h
+++ b/src/vnet/ip/reass/ip6_full_reass.h
@@ -46,6 +46,8 @@
 int ip6_full_reass_enable_disable_with_refcnt (u32 sw_if_index,
 					       int is_enable);
 
+void ip6_local_full_reass_enable_disable (int enable);
+int ip6_local_full_reass_enabled ();
 #endif /* __included_ip6_full_reass_h */
 
 /*