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/* $OpenBSD: net.c,v 1.4 2003/10/16 04:30:09 drahn Exp $ */
/* $NetBSD: net.c,v 1.1 1997/04/16 20:29:18 thorpej Exp $ */
/*
* Copyright (C) 1995 Wolfgang Solfrank.
* Copyright (C) 1995 TooLs GmbH.
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by TooLs GmbH.
* 4. The name of TooLs GmbH may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``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 TOOLS GMBH 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.
*/
/*
* This module implements a "raw device" interface suitable for
* use by the stand-alone I/O library NFS code. This interface
* does not support any "block" access, and exists only for the
* purpose of initializing the network interface, getting boot
* parameters, and performing the NFS mount.
*
* At open time, this does:
*
* find interface - netif_open()
* BOOTP - bootp()
* RPC/mountd - nfs_mount()
*
* The root file handle from mountd is saved in a global
* for use by the NFS open code (NFS/lookup).
*
* Note: this is based in part on sys/arch/sparc/stand/net.c
*/
#include <sys/param.h>
#include <sys/socket.h>
#include <net/if.h>
#include <netinet/in.h>
#include <netinet/if_ether.h>
#include <netinet/in_systm.h>
#include <lib/libsa/stand.h>
#include <lib/libsa/net.h>
#include <lib/libsa/netif.h>
char rootpath[FNAME_SIZE];
static int netdev_sock = -1;
static int open_count;
/*
* 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 of_dev *op)
{
int error = 0;
/*
* On first open, do netif open, mount, etc.
*/
if (open_count == 0) {
/* Find network interface. */
if ((netdev_sock = netif_open(op)) < 0) {
error = errno;
goto bad;
}
if ((error = net_mountroot()) != 0)
goto bad;
}
open_count++;
bad:
if (netdev_sock >= 0 && open_count == 0) {
netif_close(netdev_sock);
netdev_sock = -1;
}
return error;
}
int
net_close(struct of_dev *op)
{
/*
* On last close, do netif close, etc.
*/
if (open_count > 0)
if (--open_count == 0) {
netif_close(netdev_sock);
netdev_sock = -1;
}
}
int
net_mountroot()
{
#ifdef DEBUG
printf("net_mountroot\n");
#endif
/*
* Get info for NFS boot: our IP address, out hostname,
* server IP address, and our root path on the server.
* We use BOOTP (RFC951, RFC1532) exclusively as mandated
* by PowerPC Reference Platform Specification I.4.2
*/
bootp(netdev_sock);
if (myip.s_addr == 0)
return ETIMEDOUT;
printf("Using IP address: %s\n", inet_ntoa(myip));
#ifdef DEBUG
printf("myip: %s (%s)", hostname, inet_ntoa(myip));
if (gateip.s_addr)
printf(", gateip: %s", inet_ntoa(gateip));
if (netmask)
printf(", netmask: %s", intoa(netmask));
printf("\n");
#endif
printf("root addr=%s path=%s\n", inet_ntoa(rootip), rootpath);
/*
* Get the NFS file handle (mount).
*/
if (nfs_mount(netdev_sock, rootip, rootpath) < 0)
return errno;
return 0;
}
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