nat: Final NAT44 EI/ED split patch

This patch achieves complete separation of
endpoint-dependent and endpoint-independent IPv4 NAT
features. Some common stuff is also moved to NAT
library.

Type: refactor

Change-Id: I52468b7e2b5ac28958a2baf8e2ea01787322e801
Signed-off-by: Filip Varga <fivarga@cisco.com>

1 files changed, 59 insertions, 0 deletions

diff --git a/src/plugins/nat/lib/lib.c b/src/plugins/nat/lib/lib.c
new file mode 100644
index 00000000000..d2def2cc480
--- /dev/null
+++ b/src/plugins/nat/lib/lib.c
@@ -0,0 +1,59 @@
+/*
+ * Copyright (c) 2020 Cisco and/or its affiliates.
+ * 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.
+ */
+
+#include <nat/lib/lib.h>
+
+uword
+unformat_nat_protocol (unformat_input_t *input, va_list *args)
+{
+  u32 *r = va_arg (*args, u32 *);
+
+  if (0)
+    ;
+#define _(N, i, n, s) else if (unformat (input, s)) *r = NAT_PROTOCOL_##N;
+  foreach_nat_protocol
+#undef _
+    else return 0;
+  return 1;
+}
+
+u8 *
+format_nat_protocol (u8 *s, va_list *args)
+{
+  u32 i = va_arg (*args, u32);
+  u8 *t = 0;
+
+  switch (i)
+    {
+#define _(N, j, n, str)                                                       \
+  case NAT_PROTOCOL_##N:                                                      \
+    t = (u8 *) str;                                                           \
+    break;
+      foreach_nat_protocol
+#undef _
+	default : s = format (s, "unknown");
+      return s;
+    }
+  s = format (s, "%s", t);
+  return s;
+}
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */