/* $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;
}