IGMP improvements

- Enable/Disable an interface for IGMP
- improve logging
- refactor common code
- no orphaned timers
- IGMP state changes in main thread only
- Large groups split over multiple state-change reports
- SSM range configuration API.
- more tests

Change-Id: If5674f1044e7e97274a711f47807c9ba689d7b9a
Signed-off-by: Neale Ranns <nranns@cisco.com>

1 files changed, 88 insertions, 0 deletions

diff --git a/src/plugins/igmp/igmp_src.h b/src/plugins/igmp/igmp_src.h
new file mode 100644
index 00000000000..032066ec726
--- /dev/null
+++ b/src/plugins/igmp/igmp_src.h
@@ -0,0 +1,88 @@
+/*
+ *------------------------------------------------------------------
+ * 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.
+ *------------------------------------------------------------------
+ */
+
+#ifndef __IGMP_SOURCE_H__
+#define __IGMP_SOURCE_H__
+
+#include <igmp/igmp_types.h>
+
+/**
+ * IGMP Source timers
+ */
+typedef enum igmp_src_timer_t_
+{
+  /**
+   * On expiry the source has not been refreshed by a query
+   * and can now be reaped
+   */
+  IGMP_SRC_TIMER_EXP,
+} igmp_src_timer_t;
+
+#define IGMP_SRC_N_TIMERS (IGMP_SRC_TIMER_EXP + 1)
+
+/**
+ *  @brief IGMP source
+ *  The representation of a specified source address with in multicast group.
+ */
+typedef struct igmp_src_t_
+{
+  /**
+   * The source's key
+   */
+  igmp_key_t *key;
+
+  /**
+   * The liveness timer. Reset with each recieved report. on expiry
+   * the source is removed from the group.
+   */
+  u32 exp_timer;
+
+  /**
+   * The group this source is on
+   */
+  u32 group;
+
+  /**
+   * the mode that provided this source
+   */
+  igmp_mode_t mode;
+
+  /**
+   * Timers
+   */
+  u32 timers[IGMP_SRC_N_TIMERS];
+} igmp_src_t;
+
+extern void igmp_src_free (igmp_src_t * src);
+
+extern igmp_src_t *igmp_src_alloc (u32 group_index,
+				   const igmp_key_t * skey, igmp_mode_t mode);
+
+extern u32 igmp_src_index (igmp_src_t * src);
+
+extern void igmp_src_refresh (igmp_src_t * src);
+extern void igmp_src_blocked (igmp_src_t * src);
+
+#endif
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */