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/*
* Copyright 2009-2012,2014 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_NETWORK_H
#define INCLUDED_NETWORK_H
#include <stdint.h>
#include <stddef.h>
#include <octoclock.h>
#include <net/socket_address.h>
#include <net/eth_mac_addr.h>
#include "octoclock/common.h"
/*
* Without its own HTON[LS] included in this build,
* some of lwIP's #defines do nothing.
* These are substitutions with our own HTON[LS].
*/
#define htons(n) (((((uint16_t)(n) & 0xFF)) << 8) | (((uint16_t)(n) & 0xFF00) >> 8))
#define ntohs(n) htons(n)
#define htonl(n) (((((uint32_t)(n) & 0xFF)) << 24) | \
((((uint32_t)(n) & 0xFF00)) << 8) | \
((((uint32_t)(n) & 0xFF0000)) >> 8) | \
((((uint32_t)(n) & 0xFF000000)) >> 24))
#define ntohl(n) htonl(n)
#define _IP(a,b,c,d) (((uint32_t)a << 24) | ((uint32_t)b << 16) | ((uint32_t)c << 8) | ((uint32_t)d << 0))
#define _IPH_V(hdr) (ntohs((hdr)->_v_hl_tos) >> 12)
#define _IPH_HL(hdr) ((ntohs((hdr)->_v_hl_tos) >> 8) & 0x0f)
#define _IPH_TOS(hdr) (ntohs((hdr)->_v_hl_tos) & 0xff)
#define _IPH_LEN(hdr) (ntohs((hdr)->_len))
#define _IPH_ID(hdr) (ntohs((hdr)->_id))
#define _IPH_OFFSET(hdr) (ntohs((hdr)->_offset))
#define _IPH_TTL(hdr) (ntohs((hdr)->_ttl_proto) >> 8)
#define _IPH_PROTO(hdr) (ntohs((hdr)->_ttl_proto) & 0xff)
#define _IPH_CHKSUM(hdr) (ntohs((hdr)->_chksum))
#define _IPH_VHLTOS_SET(hdr, v, hl, tos) (hdr)->_v_hl_tos = (htons(((v) << 12) | ((hl) << 8) | (tos)))
#define _IPH_LEN_SET(hdr, len) (hdr)->_len = (htons(len))
#define _IPH_ID_SET(hdr, id) (hdr)->_id = (id)
#define _IPH_OFFSET_SET(hdr, off) (hdr)->_offset = (off)
#define _IPH_TTL_SET(hdr, ttl) (hdr)->_ttl_proto = (htons(_IPH_PROTO(hdr) | ((u16_t)(ttl) << 8)))
#define _IPH_PROTO_SET(hdr, proto) (hdr)->_ttl_proto = (htons((proto) | (_IPH_TTL(hdr) << 8)))
#define _IPH_CHKSUM_SET(hdr, chksum) (hdr)->_chksum = (chksum)
// Global network values
eth_mac_addr_t octoclock_mac_addr;
struct ip_addr octoclock_ip_addr;
struct ip_addr octoclock_dr_addr;
struct ip_addr octoclock_netmask;
// Ethernet I/O buffers
uint8_t buf_in[512];
uint8_t buf_out[512];
// Default values loaded if EEPROM is incomplete
static const uint32_t blank_eeprom_ip = _IP(255,255,255,255);
static const uint32_t default_ip = _IP(192,168,10,3);
static const uint32_t default_dr = _IP(192,168,10,1);
static const uint32_t default_netmask = _IP(255,255,255,0);
static const uint8_t blank_eeprom_mac[6] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
static const uint8_t default_mac[6] = {0x00, 0x80, 0x2F, 0x11, 0x22, 0x33};
typedef void (*udp_receiver_t)(struct socket_address src, struct socket_address dst,
unsigned char *payload, int payload_len);
void init_udp_listeners(void);
void register_addrs(const eth_mac_addr_t *mac_addr, const struct ip_addr *ip_addr);
void register_udp_listener(int port, udp_receiver_t rcvr);
void send_udp_pkt(int src_port, struct socket_address dst,
const void *buf, size_t len);
void handle_eth_packet(size_t recv_len);
void network_init(void);
#endif /* INCLUDED_NETWORK_H */
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