nat: refactor and split fo EI/ED features

This patch is aimed at moving EI features out of NAT44
plugin & split of EI/ED functions.

Type: refactor

Change-Id: I63cf70a264ed2512708fe92665d64f04690783d0
Signed-off-by: Filip Varga <fivarga@cisco.com>

1 files changed, 51 insertions, 0 deletions

diff --git a/src/plugins/nat/nat44-ei/nat44_ei_inlines.h b/src/plugins/nat/nat44-ei/nat44_ei_inlines.h
new file mode 100644
index 00000000000..f7089ea0c21
--- /dev/null
+++ b/src/plugins/nat/nat44-ei/nat44_ei_inlines.h
@@ -0,0 +1,51 @@
+/*
+ * 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.
+ */
+
+#ifndef __included_nat44_ei_inlines_h__
+#define __included_nat44_ei_inlines_h__
+
+#include <nat/nat44-ei/nat44_ei_ha.h>
+
+static_always_inline u8
+nat44_ei_maximum_sessions_exceeded (snat_main_t *sm, u32 thread_index)
+{
+  if (pool_elts (sm->per_thread_data[thread_index].sessions) >=
+      sm->max_translations_per_thread)
+    return 1;
+  return 0;
+}
+
+always_inline void
+nat44_ei_session_update_counters (snat_session_t *s, f64 now, uword bytes,
+				  u32 thread_index)
+{
+  s->last_heard = now;
+  s->total_pkts++;
+  s->total_bytes += bytes;
+  nat_ha_sref (&s->out2in.addr, s->out2in.port, &s->ext_host_addr,
+	       s->ext_host_port, s->nat_proto, s->out2in.fib_index,
+	       s->total_pkts, s->total_bytes, thread_index,
+	       &s->ha_last_refreshed, now);
+}
+
+#endif /* __included_nat44_ei_inlines_h__ */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */