Revert "nat: static mappings in flow hash"

[vpp.git] / src / plugins / nat / lib / inlines.h

diff --git a/src/plugins/nat/lib/inlines.h b/src/plugins/nat/lib/inlines.h
index 46be64d..fe1f7dd 100644 (file)
--- a/src/plugins/nat/lib/inlines.h
+++ b/src/plugins/nat/lib/inlines.h
@@ -20,6 +20,37 @@
 
 #include <vnet/ip/icmp46_packet.h>
 
+always_inline nat_protocol_t
+ip_proto_to_nat_proto (u8 ip_proto)
+{
+  static const nat_protocol_t lookup_table[256] = {
+    [IP_PROTOCOL_TCP] = NAT_PROTOCOL_TCP,
+    [IP_PROTOCOL_UDP] = NAT_PROTOCOL_UDP,
+    [IP_PROTOCOL_ICMP] = NAT_PROTOCOL_ICMP,
+    [IP_PROTOCOL_ICMP6] = NAT_PROTOCOL_ICMP,
+  };
+
+  return lookup_table[ip_proto];
+}
+
+static_always_inline u8
+nat_proto_to_ip_proto (nat_protocol_t nat_proto)
+{
+  ASSERT (nat_proto <= NAT_PROTOCOL_ICMP);
+
+  static const u8 lookup_table[256] = {
+    [NAT_PROTOCOL_OTHER] = ~0,
+    [NAT_PROTOCOL_TCP] = IP_PROTOCOL_TCP,
+    [NAT_PROTOCOL_UDP] = IP_PROTOCOL_UDP,
+    [NAT_PROTOCOL_ICMP] = IP_PROTOCOL_ICMP,
+  };
+
+  ASSERT (NAT_PROTOCOL_OTHER == nat_proto || NAT_PROTOCOL_TCP == nat_proto
+         || NAT_PROTOCOL_UDP == nat_proto || NAT_PROTOCOL_ICMP == nat_proto);
+
+  return lookup_table[nat_proto];
+}
+
 static_always_inline u8
 icmp_type_is_error_message (u8 icmp_type)
 {