aboutsummaryrefslogtreecommitdiffstats
path: root/firmware/octoclock/include/net
diff options
context:
space:
mode:
Diffstat (limited to 'firmware/octoclock/include/net')
-rw-r--r--firmware/octoclock/include/net/enc28j60.h299
-rw-r--r--firmware/octoclock/include/net/enc28j60conf.h49
-rw-r--r--firmware/octoclock/include/net/eth_hdr.h36
-rw-r--r--firmware/octoclock/include/net/eth_mac_addr.h31
-rw-r--r--firmware/octoclock/include/net/ethertype.h27
-rw-r--r--firmware/octoclock/include/net/if_arp.h153
-rw-r--r--firmware/octoclock/include/net/socket_address.h41
-rw-r--r--firmware/octoclock/include/net/udp_handlers.h34
8 files changed, 670 insertions, 0 deletions
diff --git a/firmware/octoclock/include/net/enc28j60.h b/firmware/octoclock/include/net/enc28j60.h
new file mode 100644
index 000000000..463303f3c
--- /dev/null
+++ b/firmware/octoclock/include/net/enc28j60.h
@@ -0,0 +1,299 @@
+/*! \file enc28j60.h \brief Microchip ENC28J60 Ethernet Interface Driver. */
+//*****************************************************************************
+//
+// File Name : 'enc28j60.h'
+// Title : Microchip ENC28J60 Ethernet Interface Driver
+// Author : Pascal Stang (c)2005
+// Created : 9/22/2005
+// Revised : 9/22/2005
+// Version : 0.1
+// Target MCU : Atmel AVR series
+// Editor Tabs : 4
+//
+/// \ingroup network
+/// \defgroup enc28j60 Microchip ENC28J60 Ethernet Interface Driver (enc28j60.c)
+/// \code #include "net/enc28j60.h" \endcode
+/// \par Overview
+/// This driver provides initialization and transmit/receive
+/// functions for the Microchip ENC28J60 10Mb Ethernet Controller and PHY.
+/// This chip is novel in that it is a full MAC+PHY interface all in a 28-pin
+/// chip, using an SPI interface to the host processor.
+///
+//
+//*****************************************************************************
+//@{
+
+#ifndef ENC28J60_H
+#define ENC28J60_H
+
+#include <avrlibdefs.h>
+
+#include "enc28j60conf.h"
+
+// ENC28J60 Control Registers
+// Control register definitions are a combination of address,
+// bank number, and Ethernet/MAC/PHY indicator bits.
+// - Register address (bits 0-4)
+// - Bank number (bits 5-6)
+// - MAC/PHY indicator (bit 7)
+#define ADDR_MASK 0x1F
+#define BANK_MASK 0x60
+#define SPRD_MASK 0x80
+// All-bank registers
+#define EIE 0x1B
+#define EIR 0x1C
+#define ESTAT 0x1D
+#define ECON2 0x1E
+#define ECON1 0x1F
+// Bank 0 registers
+#define ERDPTL (0x00|0x00)
+#define ERDPTH (0x01|0x00)
+#define EWRPTL (0x02|0x00)
+#define EWRPTH (0x03|0x00)
+#define ETXSTL (0x04|0x00)
+#define ETXSTH (0x05|0x00)
+#define ETXNDL (0x06|0x00)
+#define ETXNDH (0x07|0x00)
+#define ERXSTL (0x08|0x00)
+#define ERXSTH (0x09|0x00)
+#define ERXNDL (0x0A|0x00)
+#define ERXNDH (0x0B|0x00)
+#define ERXRDPTL (0x0C|0x00)
+#define ERXRDPTH (0x0D|0x00)
+#define ERXWRPTL (0x0E|0x00)
+#define ERXWRPTH (0x0F|0x00)
+#define EDMASTL (0x10|0x00)
+#define EDMASTH (0x11|0x00)
+#define EDMANDL (0x12|0x00)
+#define EDMANDH (0x13|0x00)
+#define EDMADSTL (0x14|0x00)
+#define EDMADSTH (0x15|0x00)
+#define EDMACSL (0x16|0x00)
+#define EDMACSH (0x17|0x00)
+// Bank 1 registers
+#define EHT0 (0x00|0x20)
+#define EHT1 (0x01|0x20)
+#define EHT2 (0x02|0x20)
+#define EHT3 (0x03|0x20)
+#define EHT4 (0x04|0x20)
+#define EHT5 (0x05|0x20)
+#define EHT6 (0x06|0x20)
+#define EHT7 (0x07|0x20)
+#define EPMM0 (0x08|0x20)
+#define EPMM1 (0x09|0x20)
+#define EPMM2 (0x0A|0x20)
+#define EPMM3 (0x0B|0x20)
+#define EPMM4 (0x0C|0x20)
+#define EPMM5 (0x0D|0x20)
+#define EPMM6 (0x0E|0x20)
+#define EPMM7 (0x0F|0x20)
+#define EPMCSL (0x10|0x20)
+#define EPMCSH (0x11|0x20)
+#define EPMOL (0x14|0x20)
+#define EPMOH (0x15|0x20)
+#define EWOLIE (0x16|0x20)
+#define EWOLIR (0x17|0x20)
+#define ERXFCON (0x18|0x20)
+#define EPKTCNT (0x19|0x20)
+// Bank 2 registers
+#define MACON1 (0x00|0x40|0x80)
+#define MACON2 (0x01|0x40|0x80)
+#define MACON3 (0x02|0x40|0x80)
+#define MACON4 (0x03|0x40|0x80)
+#define MABBIPG (0x04|0x40|0x80)
+#define MAIPGL (0x06|0x40|0x80)
+#define MAIPGH (0x07|0x40|0x80)
+#define MACLCON1 (0x08|0x40|0x80)
+#define MACLCON2 (0x09|0x40|0x80)
+#define MAMXFLL (0x0A|0x40|0x80)
+#define MAMXFLH (0x0B|0x40|0x80)
+#define MAPHSUP (0x0D|0x40|0x80)
+#define MICON (0x11|0x40|0x80)
+#define MICMD (0x12|0x40|0x80)
+#define MIREGADR (0x14|0x40|0x80)
+#define MIWRL (0x16|0x40|0x80)
+#define MIWRH (0x17|0x40|0x80)
+#define MIRDL (0x18|0x40|0x80)
+#define MIRDH (0x19|0x40|0x80)
+// Bank 3 registers
+#define MAADR1 (0x00|0x60|0x80)
+#define MAADR0 (0x01|0x60|0x80)
+#define MAADR3 (0x02|0x60|0x80)
+#define MAADR2 (0x03|0x60|0x80)
+#define MAADR5 (0x04|0x60|0x80)
+#define MAADR4 (0x05|0x60|0x80)
+#define EBSTSD (0x06|0x60)
+#define EBSTCON (0x07|0x60)
+#define EBSTCSL (0x08|0x60)
+#define EBSTCSH (0x09|0x60)
+#define MISTAT (0x0A|0x60|0x80)
+#define EREVID (0x12|0x60)
+#define ECOCON (0x15|0x60)
+#define EFLOCON (0x17|0x60)
+#define EPAUSL (0x18|0x60)
+#define EPAUSH (0x19|0x60)
+// PHY registers
+#define PHCON1 0x00
+#define PHSTAT1 0x01
+#define PHHID1 0x02
+#define PHHID2 0x03
+#define PHCON2 0x10
+#define PHSTAT2 0x11
+#define PHIE 0x12
+#define PHIR 0x13
+#define PHLCON 0x14
+
+// ENC28J60 EIE Register Bit Definitions
+#define EIE_INTIE 0x80
+#define EIE_PKTIE 0x40
+#define EIE_DMAIE 0x20
+#define EIE_LINKIE 0x10
+#define EIE_TXIE 0x08
+#define EIE_WOLIE 0x04
+#define EIE_TXERIE 0x02
+#define EIE_RXERIE 0x01
+// ENC28J60 EIR Register Bit Definitions
+#define EIR_PKTIF 0x40
+#define EIR_DMAIF 0x20
+#define EIR_LINKIF 0x10
+#define EIR_TXIF 0x08
+#define EIR_WOLIF 0x04
+#define EIR_TXERIF 0x02
+#define EIR_RXERIF 0x01
+// ENC28J60 ESTAT Register Bit Definitions
+#define ESTAT_INT 0x80
+#define ESTAT_LATECOL 0x10
+#define ESTAT_RXBUSY 0x04
+#define ESTAT_TXABRT 0x02
+#define ESTAT_CLKRDY 0x01
+// ENC28J60 ECON2 Register Bit Definitions
+#define ECON2_AUTOINC 0x80
+#define ECON2_PKTDEC 0x40
+#define ECON2_PWRSV 0x20
+#define ECON2_VRPS 0x08
+// ENC28J60 ECON1 Register Bit Definitions
+#define ECON1_TXRST 0x80
+#define ECON1_RXRST 0x40
+#define ECON1_DMAST 0x20
+#define ECON1_CSUMEN 0x10
+#define ECON1_TXRTS 0x08
+#define ECON1_RXEN 0x04
+#define ECON1_BSEL1 0x02
+#define ECON1_BSEL0 0x01
+// ENC28J60 MACON1 Register Bit Definitions
+#define MACON1_LOOPBK 0x10
+#define MACON1_TXPAUS 0x08
+#define MACON1_RXPAUS 0x04
+#define MACON1_PASSALL 0x02
+#define MACON1_MARXEN 0x01
+// ENC28J60 MACON2 Register Bit Definitions
+#define MACON2_MARST 0x80
+#define MACON2_RNDRST 0x40
+#define MACON2_MARXRST 0x08
+#define MACON2_RFUNRST 0x04
+#define MACON2_MATXRST 0x02
+#define MACON2_TFUNRST 0x01
+// ENC28J60 MACON3 Register Bit Definitions
+#define MACON3_PADCFG2 0x80
+#define MACON3_PADCFG1 0x40
+#define MACON3_PADCFG0 0x20
+#define MACON3_TXCRCEN 0x10
+#define MACON3_PHDRLEN 0x08
+#define MACON3_HFRMLEN 0x04
+#define MACON3_FRMLNEN 0x02
+#define MACON3_FULDPX 0x01
+// ENC28J60 MICMD Register Bit Definitions
+#define MICMD_MIISCAN 0x02
+#define MICMD_MIIRD 0x01
+// ENC28J60 MISTAT Register Bit Definitions
+#define MISTAT_NVALID 0x04
+#define MISTAT_SCAN 0x02
+#define MISTAT_BUSY 0x01
+// ENC28J60 PHY PHCON1 Register Bit Definitions
+#define PHCON1_PRST 0x8000
+#define PHCON1_PLOOPBK 0x4000
+#define PHCON1_PPWRSV 0x0800
+#define PHCON1_PDPXMD 0x0100
+// ENC28J60 PHY PHSTAT1 Register Bit Definitions
+#define PHSTAT1_PFDPX 0x1000
+#define PHSTAT1_PHDPX 0x0800
+#define PHSTAT1_LLSTAT 0x0004
+#define PHSTAT1_JBSTAT 0x0002
+// ENC28J60 PHY PHCON2 Register Bit Definitions
+#define PHCON2_FRCLINK 0x4000
+#define PHCON2_TXDIS 0x2000
+#define PHCON2_JABBER 0x0400
+#define PHCON2_HDLDIS 0x0100
+
+// ENC28J60 Packet Control Byte Bit Definitions
+#define PKTCTRL_PHUGEEN 0x08
+#define PKTCTRL_PPADEN 0x04
+#define PKTCTRL_PCRCEN 0x02
+#define PKTCTRL_POVERRIDE 0x01
+
+// SPI operation codes
+#define ENC28J60_READ_CTRL_REG 0x00
+#define ENC28J60_READ_BUF_MEM 0x3A
+#define ENC28J60_WRITE_CTRL_REG 0x40
+#define ENC28J60_WRITE_BUF_MEM 0x7A
+#define ENC28J60_BIT_FIELD_SET 0x80
+#define ENC28J60_BIT_FIELD_CLR 0xA0
+#define ENC28J60_SOFT_RESET 0xFF
+
+
+// buffer boundaries applied to internal 8K ram
+// entire available packet buffer space is allocated
+#define TXSTART_INIT 0x0000 // start TX buffer at 0
+#define RXSTART_INIT 0x0600 // give TX buffer space for one full ethernet frame (~1500 bytes)
+#define RXSTOP_INIT 0x1FFF // receive buffer gets the rest
+
+#define MAX_FRAMELEN 1518 // maximum ethernet frame length
+
+// Ethernet constants
+#define ETHERNET_MIN_PACKET_LENGTH 0x3C
+//#define ETHERNET_HEADER_LENGTH 0x0E
+
+// setup ports for I/O
+//void ax88796SetupPorts(void);
+
+//! do a ENC28J60 read operation
+u08 enc28j60ReadOp(u08 op, u08 address);
+//! do a ENC28J60 write operation
+void enc28j60WriteOp(u08 op, u08 address, u08 data);
+//! read the packet buffer memory
+void enc28j60ReadBuffer(u16 len, u08* data);
+//! write the packet buffer memory
+void enc28j60WriteBuffer(u16 len, u08* data);
+//! set the register bank for register at address
+void enc28j60SetBank(u08 address);
+//! read ax88796 register
+u08 enc28j60Read(u08 address);
+//! write ax88796 register
+void enc28j60Write(u08 address, u08 data);
+//! read a PHY register
+u16 enc28j60PhyRead(u08 address);
+//! write a PHY register
+void enc28j60PhyWrite(u08 address, u16 data);
+
+//! initialize the ethernet interface for transmit/receive
+void enc28j60Init(u08* macaddr);
+
+//! Packet transmit function.
+/// Sends a packet on the network. It is assumed that the packet is headed by a valid ethernet header.
+/// \param len Length of packet in bytes.
+/// \param packet Pointer to packet data.
+/// \param len2 Length of the secound packet in bytes, can be 0.
+/// \param packet2 Pointer to the secound packet data, can be NULL.
+void enc28j60PacketSend(unsigned int len1, unsigned char* packet1, unsigned int len2, unsigned char* packet2);
+
+//! Packet receive function.
+/// Gets a packet from the network receive buffer, if one is available.
+/// The packet will by headed by an ethernet header.
+/// \param maxlen The maximum acceptable length of a retrieved packet.
+/// \param buf Pointer to buffer.
+/// \return Packet length in bytes if a packet was retrieved, zero otherwise.
+unsigned int enc28j60PacketReceive(unsigned int maxlen, u08* buf);
+
+#endif
+//@}
+
diff --git a/firmware/octoclock/include/net/enc28j60conf.h b/firmware/octoclock/include/net/enc28j60conf.h
new file mode 100644
index 000000000..0acf5473c
--- /dev/null
+++ b/firmware/octoclock/include/net/enc28j60conf.h
@@ -0,0 +1,49 @@
+/*! \file enc28j60conf.h \brief Microchip ENC28J60 Ethernet Interface Driver Configuration. */
+//*****************************************************************************
+//
+// File Name : 'enc28j60conf.h'
+// Title : Microchip ENC28J60 Ethernet Interface Driver Configuration
+// Author : Pascal Stang
+// Created : 10/5/2004
+// Revised : 8/22/2005
+// Version : 0.1
+// Target MCU : Atmel AVR series
+// Editor Tabs : 4
+//
+// Description : This driver provides initialization and transmit/receive
+// functions for the ENC28J60 10Mb Ethernet Controller and PHY.
+//
+// This code is distributed under the GNU Public License
+// which can be found at http://www.gnu.org/licenses/gpl.txt
+//
+//*****************************************************************************
+
+#ifndef ENC28J60CONF_H
+#define ENC28J60CONF_H
+
+#include <stdint.h>
+typedef uint8_t u08;
+typedef uint16_t u16;
+typedef uint32_t u32;
+
+// ENC28J60 SPI port
+#define ENC28J60_SPI_PORT PORTB
+#define ENC28J60_SPI_DDR DDRB
+#define ENC28J60_SPI_SCK PORTB1
+#define ENC28J60_SPI_MOSI PORTB2
+#define ENC28J60_SPI_MISO PORTB3
+#define ENC28J60_SPI_SS PORTB0
+// ENC28J60 control port
+#define ENC28J60_CONTROL_PORT PORTB
+#define ENC28J60_CONTROL_DDR DDRB
+#define ENC28J60_CONTROL_CS PORTB0
+
+// MAC address for this interface
+#define ENC28J60_MAC0 '0'
+#define ENC28J60_MAC1 'F'
+#define ENC28J60_MAC2 'F'
+#define ENC28J60_MAC3 'I'
+#define ENC28J60_MAC4 'C'
+#define ENC28J60_MAC5 'E'
+
+#endif /* ENC28J60CONF_H */
diff --git a/firmware/octoclock/include/net/eth_hdr.h b/firmware/octoclock/include/net/eth_hdr.h
new file mode 100644
index 000000000..9d5356c66
--- /dev/null
+++ b/firmware/octoclock/include/net/eth_hdr.h
@@ -0,0 +1,36 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2009,2010,2014 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_ETH_HDR_H
+#define INCLUDED_ETH_HDR_H
+
+#include <compiler.h>
+#include <net/eth_mac_addr.h>
+
+#define ETH_HLEN 14
+
+/*!
+ * \brief Standard 14-byte ethernet header.
+ */
+
+typedef struct {
+ eth_mac_addr_t dst;
+ eth_mac_addr_t src;
+ uint16_t ethertype;
+} _AL2 eth_hdr_t;
+
+#endif /* INCLUDED_ETH_HDR_H */
diff --git a/firmware/octoclock/include/net/eth_mac_addr.h b/firmware/octoclock/include/net/eth_mac_addr.h
new file mode 100644
index 000000000..0c790aa4f
--- /dev/null
+++ b/firmware/octoclock/include/net/eth_mac_addr.h
@@ -0,0 +1,31 @@
+/*
+ * 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_ETH_MAC_ADDR_H
+#define INCLUDED_ETH_MAC_ADDR_H
+
+#include <stdint.h>
+
+// Ethernet MAC address
+
+#pragma pack(push,1)
+typedef struct {
+ uint8_t addr[6];
+} eth_mac_addr_t;
+#pragma pack(pop)
+
+#endif /* INCLUDED_ETH_MAC_ADDR_H */
diff --git a/firmware/octoclock/include/net/ethertype.h b/firmware/octoclock/include/net/ethertype.h
new file mode 100644
index 000000000..0cfab8d65
--- /dev/null
+++ b/firmware/octoclock/include/net/ethertype.h
@@ -0,0 +1,27 @@
+/* -*- 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_ETHERTYPE_H
+#define INCLUDED_ETHERTYPE_H
+
+// all we care about
+
+#define ETHERTYPE_IPV4 0x0800
+#define ETHERTYPE_ARP 0x0806
+
+
+#endif /* INCLUDED_ETHERTYPE_H */
diff --git a/firmware/octoclock/include/net/if_arp.h b/firmware/octoclock/include/net/if_arp.h
new file mode 100644
index 000000000..63519c4be
--- /dev/null
+++ b/firmware/octoclock/include/net/if_arp.h
@@ -0,0 +1,153 @@
+/*
+ * INET An implementation of the TCP/IP protocol suite for the LINUX
+ * operating system. INET is implemented using the BSD Socket
+ * interface as the means of communication with the user level.
+ *
+ * Global definitions for the ARP (RFC 826) protocol.
+ *
+ * Version: @(#)if_arp.h 1.0.1 04/16/93
+ *
+ * Authors: Original taken from Berkeley UNIX 4.3, (c) UCB 1986-1988
+ * Portions taken from the KA9Q/NOS (v2.00m PA0GRI) source.
+ * Ross Biro
+ * Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
+ * Florian La Roche,
+ * Jonathan Layes <layes@loran.com>
+ * Arnaldo Carvalho de Melo <acme@conectiva.com.br> ARPHRD_HWX25
+ *
+ * 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
+ * 2 of the License, or (at your option) any later version.
+ */
+#ifndef _LINUX_IF_ARP_H
+#define _LINUX_IF_ARP_H
+
+/* ARP protocol HARDWARE identifiers. */
+#define ARPHRD_NETROM 0 /* from KA9Q: NET/ROM pseudo */
+#define ARPHRD_ETHER 1 /* Ethernet 10Mbps */
+#define ARPHRD_EETHER 2 /* Experimental Ethernet */
+#define ARPHRD_AX25 3 /* AX.25 Level 2 */
+#define ARPHRD_PRONET 4 /* PROnet token ring */
+#define ARPHRD_CHAOS 5 /* Chaosnet */
+#define ARPHRD_IEEE802 6 /* IEEE 802.2 Ethernet/TR/TB */
+#define ARPHRD_ARCNET 7 /* ARCnet */
+#define ARPHRD_APPLETLK 8 /* APPLEtalk */
+#define ARPHRD_DLCI 15 /* Frame Relay DLCI */
+#define ARPHRD_ATM 19 /* ATM */
+#define ARPHRD_METRICOM 23 /* Metricom STRIP (new IANA id) */
+#define ARPHRD_IEEE1394 24 /* IEEE 1394 IPv4 - RFC 2734 */
+#define ARPHRD_EUI64 27 /* EUI-64 */
+#define ARPHRD_INFINIBAND 32 /* InfiniBand */
+
+/* Dummy types for non ARP hardware */
+#define ARPHRD_SLIP 256
+#define ARPHRD_CSLIP 257
+#define ARPHRD_SLIP6 258
+#define ARPHRD_CSLIP6 259
+#define ARPHRD_RSRVD 260 /* Notional KISS type */
+#define ARPHRD_ADAPT 264
+#define ARPHRD_ROSE 270
+#define ARPHRD_X25 271 /* CCITT X.25 */
+#define ARPHRD_HWX25 272 /* Boards with X.25 in firmware */
+#define ARPHRD_CAN 280 /* Controller Area Network */
+#define ARPHRD_PPP 512
+#define ARPHRD_CISCO 513 /* Cisco HDLC */
+#define ARPHRD_HDLC ARPHRD_CISCO
+#define ARPHRD_LAPB 516 /* LAPB */
+#define ARPHRD_DDCMP 517 /* Digital's DDCMP protocol */
+#define ARPHRD_RAWHDLC 518 /* Raw HDLC */
+
+#define ARPHRD_TUNNEL 768 /* IPIP tunnel */
+#define ARPHRD_TUNNEL6 769 /* IP6IP6 tunnel */
+#define ARPHRD_FRAD 770 /* Frame Relay Access Device */
+#define ARPHRD_SKIP 771 /* SKIP vif */
+#define ARPHRD_LOOPBACK 772 /* Loopback device */
+#define ARPHRD_LOCALTLK 773 /* Localtalk device */
+#define ARPHRD_FDDI 774 /* Fiber Distributed Data Interface */
+#define ARPHRD_BIF 775 /* AP1000 BIF */
+#define ARPHRD_SIT 776 /* sit0 device - IPv6-in-IPv4 */
+#define ARPHRD_IPDDP 777 /* IP over DDP tunneller */
+#define ARPHRD_IPGRE 778 /* GRE over IP */
+#define ARPHRD_PIMREG 779 /* PIMSM register interface */
+#define ARPHRD_HIPPI 780 /* High Performance Parallel Interface */
+#define ARPHRD_ASH 781 /* Nexus 64Mbps Ash */
+#define ARPHRD_ECONET 782 /* Acorn Econet */
+#define ARPHRD_IRDA 783 /* Linux-IrDA */
+/* ARP works differently on different FC media .. so */
+#define ARPHRD_FCPP 784 /* Point to point fibrechannel */
+#define ARPHRD_FCAL 785 /* Fibrechannel arbitrated loop */
+#define ARPHRD_FCPL 786 /* Fibrechannel public loop */
+#define ARPHRD_FCFABRIC 787 /* Fibrechannel fabric */
+ /* 787->799 reserved for fibrechannel media types */
+#define ARPHRD_IEEE802_TR 800 /* Magic type ident for TR */
+#define ARPHRD_IEEE80211 801 /* IEEE 802.11 */
+#define ARPHRD_IEEE80211_PRISM 802 /* IEEE 802.11 + Prism2 header */
+#define ARPHRD_IEEE80211_RADIOTAP 803 /* IEEE 802.11 + radiotap header */
+
+#define ARPHRD_VOID 0xFFFF /* Void type, nothing is known */
+#define ARPHRD_NONE 0xFFFE /* zero header length */
+
+/* ARP protocol opcodes. */
+#define ARPOP_REQUEST 1 /* ARP request */
+#define ARPOP_REPLY 2 /* ARP reply */
+#define ARPOP_RREQUEST 3 /* RARP request */
+#define ARPOP_RREPLY 4 /* RARP reply */
+#define ARPOP_InREQUEST 8 /* InARP request */
+#define ARPOP_InREPLY 9 /* InARP reply */
+#define ARPOP_NAK 10 /* (ATM)ARP NAK */
+
+
+/* ARP Flag values. */
+#define ATF_COM 0x02 /* completed entry (ha valid) */
+#define ATF_PERM 0x04 /* permanent entry */
+#define ATF_PUBL 0x08 /* publish entry */
+#define ATF_USETRAILERS 0x10 /* has requested trailers */
+#define ATF_NETMASK 0x20 /* want to use a netmask (only
+ for proxy entries) */
+#define ATF_DONTPUB 0x40 /* don't answer this addresses */
+
+typedef unsigned short __be16;
+
+/*
+ * This structure defines an ethernet arp header.
+ */
+struct arphdr
+{
+ __be16 ar_hrd; /* format of hardware address */
+ __be16 ar_pro; /* format of protocol address */
+ unsigned char ar_hln; /* length of hardware address */
+ unsigned char ar_pln; /* length of protocol address */
+ __be16 ar_op; /* ARP opcode (command) */
+
+#if 0
+ /*
+ * Ethernet looks like this : This bit is variable sized however...
+ */
+ unsigned char ar_sha[ETH_ALEN]; /* sender hardware address */
+ unsigned char ar_sip[4]; /* sender IP address */
+ unsigned char ar_tha[ETH_ALEN]; /* target hardware address */
+ unsigned char ar_tip[4]; /* target IP address */
+#endif
+
+};
+
+/*
+ * This structure defines an ethernet arp header.
+ */
+struct arp_eth_ipv4
+{
+ __be16 ar_hrd; /* format of hardware address */
+ __be16 ar_pro; /* format of protocol address */
+ unsigned char ar_hln; /* length of hardware address */
+ unsigned char ar_pln; /* length of protocol address */
+ __be16 ar_op; /* ARP opcode (command) */
+
+ unsigned char ar_sha[6]; /* sender hardware address */
+ unsigned char ar_sip[4]; /* sender IP address */
+ unsigned char ar_tha[6]; /* target hardware address */
+ unsigned char ar_tip[4]; /* target IP address */
+};
+
+
+#endif /* _LINUX_IF_ARP_H */
diff --git a/firmware/octoclock/include/net/socket_address.h b/firmware/octoclock/include/net/socket_address.h
new file mode 100644
index 000000000..9d4b4c5b3
--- /dev/null
+++ b/firmware/octoclock/include/net/socket_address.h
@@ -0,0 +1,41 @@
+/* -*- c -*- */
+/*
+ * Copyright 2010,2014 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_SOCKET_ADDRESS_H
+#define INCLUDED_SOCKET_ADDRESS_H
+
+#include <lwip/ip_addr.h>
+
+// port and address are in network byte order
+
+typedef struct socket_address {
+ unsigned short port;
+ struct ip_addr addr;
+} socket_address_t;
+
+static inline struct socket_address
+make_socket_address(struct ip_addr addr, int port)
+{
+ struct socket_address r;
+ r.port = port;
+ r.addr = addr;
+ return r;
+}
+
+
+
+#endif /* INCLUDED_SOCKET_ADDRESS_H */
diff --git a/firmware/octoclock/include/net/udp_handlers.h b/firmware/octoclock/include/net/udp_handlers.h
new file mode 100644
index 000000000..3abc26a24
--- /dev/null
+++ b/firmware/octoclock/include/net/udp_handlers.h
@@ -0,0 +1,34 @@
+/*
+ * Copyright 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 _NET_UDP_HANDLERS_H_
+#define _NET_UDP_HANDLERS_H_
+
+#include <network.h>
+#include <net/socket_address.h>
+
+void handle_udp_ctrl_packet(
+ struct socket_address src, struct socket_address dst,
+ unsigned char *payload, int payload_len
+);
+
+void handle_udp_gpsdo_packet(
+ struct socket_address src, struct socket_address dst,
+ unsigned char *payload, int payload_len
+);
+
+#endif /* _NET_UDP_HANDLERS_H */