2007-09-19 Joel Sherrill <joel.sherrill@oarcorp.com>

	* ChangeLog, Makefile, README, init.c, listener.c, mcast.c,
	mcast_params.h, mcast_route.c, rootfs/etc/host.conf,
	rootfs/etc/hosts: New files.

1 files changed, 96 insertions, 0 deletions

diff --git a/mcast/mcast_route.c b/mcast/mcast_route.c
new file mode 100644
index 0000000..4d1df7a
--- /dev/null
+++ b/mcast/mcast_route.c
@@ -0,0 +1,96 @@
+/*
+ *  Based upon 
+ *    http://www.rtems.com/ml/rtems-users/2005/may/msg00022.html
+ */
+
+/*
+
+http://ntrg.cs.tcd.ie/undergrad/4ba2/multicast/antony/index.html
+
+Every IP multicast group has a group address. IP multicast provides only
+open groups: That is, it is not necessary to be a member of a group in
+order to send datagrams to the group.
+
+Multicast address are like IP addresses used for single hosts, and is
+written in the same way: A.B.C.D. Multicast addresses will never clash
+with host addresses because a portion of the IP address space is
+specifically reserved for multicast. This reserved range consists of
+addresses from 224.0.0.0 to 239.255.255.255. However, the multicast
+addresses from 224.0.0.0 to 224.0.0.255 are reserved for multicast
+routing information; Application programs should use multicast
+addresses outside this range.
+
+*/
+
+/*
+ * Trying to have same effect of this command:
+ *
+ * /sbin/route add -net 239.9.8.0  netmask 255.255.255.0 gw 10.4.10.19 dev eth0
+ */
+
+
+#include <rtems/rtems_bsdnet.h>
+#include <netinet/in.h>
+#include <sys/socket.h>
+#include <net/route.h>
+#include <arpa/inet.h>
+
+#include <stdio.h>
+#include <sys/errno.h>
+
+
+int add_mcast_route(
+  char *multi_address,
+  char *multi_netmask,
+  char *multi_gateway
+)
+{
+  int s;
+  struct sockaddr_in address;
+  struct sockaddr_in netmask;
+  struct sockaddr_in gateway;
+
+  memset(&address,0,sizeof(address));
+  address.sin_len = sizeof(address);
+  address.sin_family = AF_INET;
+  address.sin_addr.s_addr = inet_addr( multi_address );
+
+  memset(&netmask,0,sizeof(netmask));
+  netmask.sin_len = sizeof(netmask);
+  netmask.sin_family = AF_INET;
+  netmask.sin_addr.s_addr = inet_addr( multi_netmask );
+
+  memset(&gateway,0,sizeof(gateway));
+  gateway.sin_len = sizeof(gateway);
+  gateway.sin_family = AF_INET;
+  gateway.sin_addr.s_addr = inet_addr( multi_gateway );
+
+  s = rtems_bsdnet_rtrequest(
+    RTM_DELETE,
+    (struct sockaddr *)&address,
+    (struct sockaddr *)&gateway,
+    (struct sockaddr *)&netmask,
+    (RTF_GATEWAY | RTF_MULTICAST | RTF_STATIC),
+    NULL
+  );
+  if ( s == -1 ) {
+    fprintf( stderr, "RTM_DELETE failed errno=%d (%s)\n", 
+        errno, strerror(errno) );
+  }
+
+  s = rtems_bsdnet_rtrequest(
+    RTM_ADD,
+    (struct sockaddr *)&address,
+    (struct sockaddr *)&gateway,
+    (struct sockaddr *)&netmask,
+    (RTF_UP | RTF_GATEWAY | RTF_MULTICAST | RTF_STATIC),
+    NULL
+  );
+  if ( s == -1 ) {
+    fprintf( stderr, "RTM_ADD failed errno=%d (%s)\n", 
+        errno, strerror(errno) );
+    return -1;
+  }
+  fprintf( stderr, "Route added\n" );
+  return 0;
+}