NetBSD/sys/arch/i386/stand/netboot/dev_net.c

201 lines
4.9 KiB
C

/* $NetBSD: dev_net.c,v 1.7 1997/09/17 18:50:24 drochner Exp $ */
/*
* Copyright (c) 1995 Gordon W. Ross
* All rights reserved.
* Copyright (c) 1996
* Matthias Drochner. All rights reserved.
*
* 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. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
* 4. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Gordon W. Ross
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*/
/*
* network device for libsa
* supports BOOTP, RARP and BOOTPARAM
*/
#include <sys/types.h>
#include <sys/socket.h>
#include <net/if.h>
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <lib/libsa/stand.h>
#include <lib/libsa/net.h>
#include <lib/libsa/bootparam.h>
#include <machine/stdarg.h>
#include <netif/netif_small.h>
#include "dev_net.h"
#ifdef SUPPORT_BOOTP
void bootp __P((int));
#endif
struct in_addr myip; /* init'ed as INADDR_ANY */
struct in_addr rootip, gateip;
n_long netmask;
char rootpath[FNAME_SIZE];
char bootfile[FNAME_SIZE];
char hostname[FNAME_SIZE]; /* our hostname */
int hostnamelen;
#ifdef SUPPORT_BOOTPARAM
char domainname[FNAME_SIZE]; /* our DNS domain, not used */
int domainnamelen;
#endif
u_char bcea[6] = BA;
static int netdev_sock = -1;
/*
* Called by devopen after it sets f->f_dev to our devsw entry.
* This opens the low-level device and sets f->f_devdata.
*/
int
net_open(struct open_file *f, ...)
{
int error = 0;
#ifdef NET_DEBUG
if (netdev_sock != -1)
panic("net_open");
#endif
/* Find network interface. */
if ((netdev_sock = netif_open()) < 0)
return (ENXIO);
#ifdef SUPPORT_BOOTP
printf("configure network...trying bootp\n");
/* Get boot info using BOOTP way. (RFC951, RFC1048) */
bootp(netdev_sock);
#endif
if (myip.s_addr != INADDR_ANY) { /* got bootp reply or
* manually set */
#ifdef TFTP_HACK
int num, i;
/* XXX (some) tftp servers don't like leading "/" */
for (num = 0; bootfile[num] == '/'; num++);
for (i = 0; bootfile[i] = bootfile[i + num]; i++);
#endif
printf("boot: client IP address: %s\n",
inet_ntoa(myip));
printf("boot: client name: %s\n", hostname);
} else {
#ifdef SUPPORT_RARP
/*
* no answer, Get boot info using RARP and Sun
* bootparams.
*/
printf("configure network...trying rarp\n");
/* Get our IP address. (rarp.c) */
if (rarp_getipaddress(netdev_sock)) {
error = EIO;
goto bad;
}
printf("boot: client IP address: %s\n",
inet_ntoa(myip));
#ifdef SUPPORT_BOOTPARAM
/* Get our hostname, server IP address. */
if (!bp_whoami(netdev_sock)) {
printf("boot: client name: %s\n", hostname);
/* Get the root pathname. */
bp_getfile(netdev_sock, "root", &rootip,
rootpath);
}
#else
/*
* else fallback: use rarp server address
*/
#endif
#else /* no SUPPORT_RARP */
error = EIO;
goto bad;
#endif
}
printf("boot: server: %s, rootpath: %s, bootfile: %s\n",
inet_ntoa(rootip), rootpath, bootfile);
f->f_devdata = &netdev_sock;
return (error);
bad:
printf("net_open failed\n");
netif_close(netdev_sock);
return (error);
}
int
net_close(f)
struct open_file *f;
{
#ifdef NET_DEBUG
if (netdev_sock == -1)
panic("net_close");
#endif
netif_close(netdev_sock);
netdev_sock = -1;
f->f_devdata = NULL;
return (0);
}
int
net_ioctl(f, c, d)
struct open_file *f;
u_long c;
void *d;
{
return EIO;
}
int
net_strategy(d, f, b, s, buf, r)
void *d;
int f;
daddr_t b;
size_t s;
void *buf;
size_t *r;
{
return EIO;
}