OctoClock firmware upgrade, added host driver

* OctoClock can communicate with UHD over Ethernet
* Can read NMEA strings from GPSDO and send to host
* Added multi_usrp_clock class for clock devices
* uhd::device can now filter to return only USRP devices or clock devices
* New OctoClock bootloader can accept firmware download over Ethernet
* Added octoclock_burn_eeprom,octoclock_firmware_burner utilities
* Added test_clock_synch example to show clock API

1 files changed, 33 insertions, 0 deletions

diff --git a/firmware/octoclock/lib/arp_cache.h b/firmware/octoclock/lib/arp_cache.h
new file mode 100644
index 000000000..38ac0a198
--- /dev/null
+++ b/firmware/octoclock/lib/arp_cache.h
@@ -0,0 +1,33 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2009-2011,2014 Ettus Research LLC
+ *
+ * This program 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 3 of the License, or
+ * (at your option) any later version.
+ *
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+#ifndef INCLUDED_ARP_CACHE_H
+#define INCLUDED_ARP_CACHE_H
+
+#include <lwip/ip_addr.h>
+#include <net/eth_mac_addr.h>
+#include <stdbool.h>
+
+void arp_cache_init(void);
+
+void arp_cache_update(const struct ip_addr *ip,
+		      const eth_mac_addr_t *mac);
+
+bool arp_cache_lookup_mac(const struct ip_addr *ip,
+			  eth_mac_addr_t *mac);
+
+#endif /* INCLUDED_ARP_CACHE_H */