pimd: Infrastructure to forward packet down (*,G) tree

When a register is received, forward the packet as appropriate.
This is the infrastructure to make this happen.

Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>

1 files changed, 19 insertions, 0 deletions

diff --git a/pimd/pim_rp.c b/pimd/pim_rp.c
index e7c03792c..929211cdd 100644
--- a/pimd/pim_rp.c
+++ b/pimd/pim_rp.c
@@ -39,10 +39,29 @@ static int i_am_rp = 0;
  */
 static int fd_rp = -1;
 
+void
+pim_rp_forward_packet (struct ip *ip_hdr)
+{
+  struct sockaddr_in sin;
+
+  sin.sin_family = AF_INET;
+  sin.sin_addr.s_addr = ip_hdr->ip_dst.s_addr;
+
+  zlog_debug ("Sending Packet");
+  if (sendto (fd_rp, ip_hdr, ntohs (ip_hdr->ip_len), 0, (struct sockaddr *)&sin, sizeof (struct sockaddr)) < 0)
+    {
+      zlog_debug ("Failure to send packet: %s", safe_strerror (errno));
+    }
+}
+
 static void
 pim_rp_create_socket (void)
 {
   fd_rp = pim_socket_raw (IPPROTO_RAW);
+
+  if (pim_socket_ip_hdr (fd_rp) != 0)
+    zlog_debug ("Unable to setup socket for ip hdr inclusion");
+
   if (pim_socket_bind (fd_rp, qpim_rp.source_nexthop.interface) != 0)
     zlog_debug ("Unable to Bind to a particular socket");
 }