IGMP plugin

- host mode:
  igmp_listen - API to signal that the host has joined an (S,G)

- route mode:
  igmp_enable - API to enable the reception of host IGMP messages
  igmp_event - API to report the host join/leave from an (S,G)

Change-Id: Id180ec27dee617d33ab3088f5dcf6125d3aa9c8f
Signed-off-by: Jakub Grajciar <jgrajcia@cisco.com>

2 files changed, 36 insertions, 2 deletions

diff --git a/src/vnet/fib/fib_test.c b/src/vnet/fib/fib_test.c
index 8f7bba0369a..61ba9348fd8 100644
--- a/src/vnet/fib/fib_test.c
+++ b/src/vnet/fib/fib_test.c
@@ -40,6 +40,8 @@
 #include <vnet/fib/fib_node_list.h>
 #include <vnet/fib/fib_urpf_list.h>
 
+#include <vlib/unix/plugin.h>
+
 /*
  * Add debugs for passing tests
  */
@@ -827,7 +829,15 @@ fib_test_v4 (void)
      * table, and 4 path-lists in the v6 MFIB table
      */
 #define ENBR (5+5+2)
-#define PNBR (5+5+6)
+
+    u32 PNBR = 5+5+2+4;
+
+    /*
+     * if the IGMP plugin is loaded this adds two more entries to the v4 MFIB
+     */
+    if (vlib_get_plugin_symbol("igmp_plugin.so", "igmp_listen"))
+        PNBR += 2;
+
     FIB_TEST((0 == fib_path_list_db_size()),   "path list DB is empty");
     FIB_TEST((PNBR == fib_path_list_pool_size()), "path list pool size is %d",
 	     fib_path_list_pool_size());
@@ -4343,7 +4353,13 @@ fib_test_v6 (void)
      * All entries are special so no path-list sharing.
      */
 #define ENPS (5+4)
-#define PNPS (5+4+4)
+    u32 PNPS = (5+4+4);
+    /*
+     * if the IGMP plugin is loaded this adds two more entries to the v4 MFIB
+     */
+    if (vlib_get_plugin_symbol("igmp_plugin.so", "igmp_listen"))
+        PNPS += 2;
+
     FIB_TEST((0 == fib_path_list_db_size()),   "path list DB is empty");
     FIB_TEST((PNPS == fib_path_list_pool_size()), "path list pool size is %d",
 	     fib_path_list_pool_size());
diff --git a/src/vnet/ip/igmp_packet.h b/src/vnet/ip/igmp_packet.h
index 503259ece7c..a8e9db6d9ab 100644
--- a/src/vnet/ip/igmp_packet.h
+++ b/src/vnet/ip/igmp_packet.h
@@ -83,6 +83,24 @@ typedef struct
   ip4_address_t dst;
 } igmp_message_t;
 
+typedef struct
+{
+  /* type 0x11 (IGMPv3) */
+  igmp_header_t header;
+
+  ip4_address_t dst;
+
+  /* Reserved, Suppress Router-Side Processing flag and
+     Querier's Robustness Variable RRRRSQQQ. */
+  u8 resv_s_qrv;
+
+  /* Querier's Query Interval Code */
+  u8 qqi_code;
+
+  u16 n_src_addresses;
+  ip4_address_t src_addresses[0];
+} igmp_membership_query_v3_t;
+
 #define foreach_igmp_membership_group_v3_type	\
   _ (1, mode_is_filter_include)			\
   _ (2, mode_is_filter_exclude)			\