GBP Endpoint Learning

[vpp.git] / src / plugins / gbp / gbp_scanner.c

diff --git a/src/plugins/gbp/gbp_scanner.c b/src/plugins/gbp/gbp_scanner.c
new file mode 100644 (file)
index 0000000..a2d0c9a
--- /dev/null
+++ b/src/plugins/gbp/gbp_scanner.c
@@ -0,0 +1,104 @@
+/*
+ * gbp.h : Group Based Policy
+ *
+ * Copyright (c) 2018 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 <plugins/gbp/gbp_scanner.h>
+#include <plugins/gbp/gbp_endpoint.h>
+#include <plugins/gbp/gbp_vxlan.h>
+
+vlib_log_class_t gs_logger;
+
+#define GBP_SCANNER_DBG(...)                                      \
+    vlib_log_debug (gs_logger, __VA_ARGS__);
+
+static uword
+gbp_scanner (vlib_main_t * vm, vlib_node_runtime_t * rt, vlib_frame_t * f)
+{
+  uword event_type, *event_data = 0;
+  bool enabled = 0, do_scan = 0;
+
+  while (1)
+    {
+      do_scan = 0;
+
+      if (enabled)
+       {
+         /* scan every 'inactive threshold' seconds */
+         vlib_process_wait_for_event_or_clock (vm,
+                                               gbp_endpoint_scan_threshold
+                                               ());
+       }
+      else
+       vlib_process_wait_for_event (vm);
+
+      event_type = vlib_process_get_events (vm, &event_data);
+      vec_reset_length (event_data);
+
+      switch (event_type)
+       {
+       case ~0:
+         /* timer expired */
+         do_scan = 1;
+         break;
+
+       case GBP_ENDPOINT_SCAN_START:
+         enabled = 1;
+         break;
+
+       case GBP_ENDPOINT_SCAN_STOP:
+         enabled = 0;
+         break;
+
+       default:
+         ASSERT (0);
+       }
+
+      if (do_scan)
+       {
+         GBP_SCANNER_DBG ("start");
+         gbp_endpoint_scan (vm);
+         GBP_SCANNER_DBG ("stop");
+       }
+    }
+  return 0;
+}
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (gbp_scanner_node) = {
+    .function = gbp_scanner,
+    .type = VLIB_NODE_TYPE_PROCESS,
+    .name = "gbp-scanner",
+};
+/* *INDENT-ON* */
+
+
+static clib_error_t *
+gbp_scanner_init (vlib_main_t * vm)
+{
+  gs_logger = vlib_log_register_class ("gbp", "scan");
+
+  return (NULL);
+}
+
+VLIB_INIT_FUNCTION (gbp_scanner_init);
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */