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/* $NetBSD: net.h,v 1.27 2014/03/29 14:30:16 jakllsch Exp $ */
/*
* Copyright (c) 1993 Adam Glass
* Copyright (c) 1992 Regents of the University of California.
* All rights reserved.
*
* This software was developed by the Computer Systems Engineering group
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
* contributed to Berkeley.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Lawrence Berkeley Laboratory and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <net/if_ether.h> /* for ETHER_ADDR_LEN */
#include <netinet/in.h>
#include <netinet/in_systm.h>
#ifndef _KERNEL /* XXX - see <netinet/in.h> */
#undef __IPADDR
#define __IPADDR(x) htonl((u_int32_t)(x))
#endif
#ifdef _STANDALONE
#include <lib/libsa/iodesc.h>
#else
#include <iodesc.h>
#endif
#define BA { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }
/* Returns true if n_long's on the same net */
#define SAMENET(a1, a2, m) ((a1.s_addr & m) == (a2.s_addr & m))
#define MACPY(s, d) memcpy(d, s, ETHER_ADDR_LEN)
#define MAXTMO 20 /* seconds */
#define MINTMO 2 /* seconds */
#define FNAME_SIZE 128
#define IFNAME_SIZE 16
#define RECV_SIZE 1536 /* XXX delete this */
/*
* How much room to leave for headers in UDP packets:
* 14: struct ether_header
* 20: struct ip
* 8: struct udphdr
* That's 42 but let's pad it out to 48 bytes.
*/
#define ETHERNET_HEADER_SIZE 14
#define IP_HEADER_SIZE 20
#define UDP_HEADER_SIZE 8
#define UDP_TOTAL_HEADER_SIZE (ETHERNET_HEADER_SIZE + IP_HEADER_SIZE + UDP_HEADER_SIZE)
/*
* How much room to leave for headers in TCP packets:
* 14: struct ether_header
* 20: struct ip
* 20: struct tcphdr
*/
#define TCP_HEADER_SIZE 20
#define TCP_TOTAL_HEADER_SIZE (ETHERNET_HEADER_SIZE + IP_HEADER_SIZE + TCP_HEADER_SIZE)
extern u_char bcea[ETHER_ADDR_LEN];
extern char rootpath[FNAME_SIZE];
extern char bootfile[FNAME_SIZE];
extern char hostname[FNAME_SIZE];
/* All of these are in network order. */
extern struct in_addr myip;
extern struct in_addr rootip;
extern struct in_addr gateip;
extern n_long netmask;
extern int debug; /* defined in the machdep sources */
/* ARP/RevARP functions: */
u_char *arpwhohas(struct iodesc *, struct in_addr);
void arp_reply(struct iodesc *, void *);
int rarp_getipaddress(int);
/* Link functions: */
ssize_t sendether(struct iodesc *, void *, size_t, u_char *, int);
ssize_t readether(struct iodesc *, void *, size_t, saseconds_t, u_int16_t *);
ssize_t sendip __P((struct iodesc *, void *, size_t, u_int8_t));
ssize_t readip __P((struct iodesc *, void *, size_t, time_t, u_int8_t));
ssize_t sendudp(struct iodesc *, void *, size_t);
ssize_t readudp(struct iodesc *, void *, size_t, saseconds_t);
int tcp_connect __P((struct iodesc *));
ssize_t sendtcp __P((struct iodesc *, void *, size_t));
ssize_t readtcp __P((struct iodesc *, void *, size_t, time_t));
ssize_t sendrecv(struct iodesc *, ssize_t (*)(struct iodesc *, void *, size_t),
void *, size_t, ssize_t (*)(struct iodesc *, void *, size_t, saseconds_t),
void *, size_t);
/* Utilities: */
char *ether_sprintf(const u_char *);
int ip_cksum(const void *, size_t);
/* Machine-dependent functions: */
#ifdef _STANDALONE /* XXX for mount_nfs(8) SMALLPROG hack */
satime_t getsecs(void);
#endif
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