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/* $NetBSD: dev_net.c,v 1.3 2014/08/05 17:55:20 joerg Exp $ */
/*-
* Copyright (c) 2007 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Tohru Nishimura.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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 <sys/param.h>
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <lib/libsa/stand.h>
#include <lib/libsa/net.h>
#include <lib/libsa/bootp.h>
#include <lib/libsa/nfs.h>
#include <lib/libkern/libkern.h>
#include <machine/bootinfo.h>
#include "globals.h"
static int netdev_sock = -1;
static int netdev_opens;
int
net_open(struct open_file *f, ...)
{
va_list ap;
char *file, *proto;
int error;
extern struct btinfo_bootpath bi_path;
va_start(ap, f);
file = va_arg(ap, char *);
proto = va_arg(ap, char *);
va_end(ap);
if (netdev_opens > 0)
return 0;
if ((netdev_sock = netif_open(NULL)) < 0)
return ENXIO; /* never fails indeed */
error = 0;
bootp(netdev_sock); /* send DHCP request */
if (myip.s_addr == 0) {
error = ENOENT; /* IP address was not found */
goto bad;
}
if (file[0] != '\0')
snprintf(bootfile, sizeof(bootfile), "%s", file);
else if (bootfile[0] == '\0')
snprintf(bootfile, sizeof(bootfile), "netbsd");
if (strcmp(proto, "nfs") == 0
&& (error = nfs_mount(netdev_sock, rootip, rootpath)) != 0)
goto bad;
snprintf(bi_path.bootpath, sizeof(bi_path.bootpath), "%s", bootfile);
f->f_devdata = &netdev_sock;
netdev_opens++;
return 0;
bad:
netif_close(netdev_sock);
netdev_sock = -1;
return error;
}
int
net_close(struct open_file *f)
{
f->f_devdata = NULL;
if (--netdev_opens > 0)
return 0;
netif_close(netdev_sock);
netdev_sock = -1;
return 0;
}
int
net_strategy(void *devdata, int rw, daddr_t dblk, size_t size,
void *p, size_t *rsize)
{
return EIO;
}
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