lib, pimd, zebra: Allow pimd to ask the kernel about mroute info

When we need to lookup the mroute info for a route.  Allow
pimd to ask the kernel.

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

1 files changed, 66 insertions, 0 deletions

diff --git a/zebra/zebra_mroute.c b/zebra/zebra_mroute.c
new file mode 100644
index 000000000..8dddb4e50
--- /dev/null
+++ b/zebra/zebra_mroute.c
@@ -0,0 +1,66 @@
+/* zebra_mroute code
+ * Copyright (C) 2016 Cumulus Networks, Inc.
+ * Donald Sharp
+ *
+ * This file is part of Quagga
+ *
+ * Quagga is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2, or (at your option) any
+ * later version.
+ *
+ * Quagga is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GNU Zebra; see the file COPYING.  If not, write to the Free
+ * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.
+ */
+
+#include <zebra.h>
+
+#include "stream.h"
+#include "prefix.h"
+#include "vrf.h"
+#include "rib.h"
+
+#include "zebra/zserv.h"
+#include "zebra/zebra_vrf.h"
+#include "zebra/zebra_mroute.h"
+#include "zebra/rt_netlink.h"
+
+int
+zebra_ipmr_route_stats (struct zserv *client, int fd, u_short length, struct zebra_vrf *zvrf)
+{
+  struct mcast_route_data mroute;
+  struct stream *s;
+
+  char sbuf[40];
+  char gbuf[40];
+
+  memset (&mroute, 0, sizeof (mroute));
+  stream_get (&mroute.sg.src, client->ibuf, 4);
+  stream_get (&mroute.sg.grp, client->ibuf, 4);
+  mroute.ifindex = stream_getl (client->ibuf);
+
+  strcpy (sbuf, inet_ntoa (mroute.sg.src));
+  strcpy (gbuf, inet_ntoa (mroute.sg.grp));
+
+  netlink_get_ipmr_sg_stats (&mroute);
+
+  s = client->obuf;
+
+  stream_reset (s);
+
+  zserv_create_header (s, ZEBRA_IPMR_ROUTE_STATS, zvrf_id (zvrf));
+  stream_put_in_addr (s, &mroute.sg.src);
+  stream_put_in_addr (s, &mroute.sg.grp);
+  stream_put (s, &mroute.lastused, sizeof (mroute.lastused));
+
+  stream_putw_at (s, 0, stream_get_endp (s));
+  zebra_server_send_message (client);
+  return 0;
+}