gdhcp: Add IPv4 Link-Local support

IPv4 Link-Local negociation starts on gdhcp client failure.

1 files changed, 55 insertions, 0 deletions

diff --git a/gdhcp/ipv4ll.h b/gdhcp/ipv4ll.h
new file mode 100644
index 00000000..aaac33ed
--- /dev/null
+++ b/gdhcp/ipv4ll.h
@@ -0,0 +1,55 @@
+/*
+ *
+ *  IPV4 Local Link library with GLib integration
+ *
+ *  Copyright (C) 2009-2010  Aldebaran Robotics. All rights reserved.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2 as
+ *  published by the Free Software Foundation.
+ *
+ *  This program 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 this program; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ */
+
+#ifndef __G_IPV4LL_H
+#define __G_IPV4LL_H
+
+#include <glib.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* 169.254.0.0 */
+#define LINKLOCAL_ADDR 0xa9fe0000
+
+/* See RFC 3927 */
+#define PROBE_WAIT	     1
+#define PROBE_NUM	     3
+#define PROBE_MIN	     1
+#define PROBE_MAX	     2
+#define ANNOUNCE_WAIT	     2
+#define ANNOUNCE_NUM	     2
+#define ANNOUNCE_INTERVAL    2
+#define MAX_CONFLICTS	    10
+#define RATE_LIMIT_INTERVAL 60
+#define DEFEND_INTERVAL	    10
+
+uint32_t ipv4ll_random_ip(int seed);
+guint ipv4ll_random_delay_ms(guint secs);
+int ipv4ll_send_arp_packet(uint8_t* source_eth, uint32_t source_ip,
+		    uint32_t target_ip, int ifindex);
+int ipv4ll_arp_socket(int ifindex);
+
+#ifdef __cplusplus
+}
+#endif
+#endif	    /* !IPV4LL_H_ */