155 lines
4.2 KiB
C
155 lines
4.2 KiB
C
/* $NetBSD: net.c,v 1.2 1999/05/07 16:19:28 drochner Exp $ */
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/*
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* Copyright (C) 1995 Wolfgang Solfrank.
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* Copyright (C) 1995 TooLs GmbH.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by TooLs GmbH.
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* 4. The name of TooLs GmbH may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* This module implements a "raw device" interface suitable for
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* use by the stand-alone I/O library NFS code. This interface
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* does not support any "block" access, and exists only for the
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* purpose of initializing the network interface, getting boot
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* parameters, and performing the NFS mount.
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*
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* At open time, this does:
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*
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* find interface - netif_open()
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* BOOTP - bootp()
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* RPC/mountd - nfs_mount()
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*
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* The root file handle from mountd is saved in a global
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* for use by the NFS open code (NFS/lookup).
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*
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* Note: this is based in part on sys/arch/sparc/stand/net.c
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*/
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#include <sys/param.h>
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#include <sys/socket.h>
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#include <net/if.h>
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#include <netinet/in.h>
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#include <netinet/in_systm.h>
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#include <lib/libsa/stand.h>
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#include <lib/libsa/net.h>
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#include <lib/libsa/netif.h>
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#include <lib/libkern/libkern.h>
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char rootpath[FNAME_SIZE];
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static int netdev_sock = -1;
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static int open_count;
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/*
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* Called by devopen after it sets f->f_dev to our devsw entry.
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* This opens the low-level device and sets f->f_devdata.
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*/
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int
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net_open(op)
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struct of_dev *op;
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{
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int error = 0;
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/*
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* On first open, do netif open, mount, etc.
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*/
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if (open_count == 0) {
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/* Find network interface. */
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if ((netdev_sock = netif_open(op)) < 0) {
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error = errno;
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goto bad;
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}
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if ((error = net_mountroot()) != 0)
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goto bad;
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}
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open_count++;
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bad:
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if (netdev_sock >= 0 && open_count == 0) {
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netif_close(netdev_sock);
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netdev_sock = -1;
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}
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return error;
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}
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int
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net_close(op)
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struct of_dev *op;
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{
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/*
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* On last close, do netif close, etc.
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*/
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if (open_count > 0)
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if (--open_count == 0) {
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netif_close(netdev_sock);
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netdev_sock = -1;
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}
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}
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int
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net_mountroot()
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{
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#ifdef DEBUG
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printf("net_mountroot\n");
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#endif
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/*
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* Get info for NFS boot: our IP address, out hostname,
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* server IP address, and our root path on the server.
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* We use BOOTP (RFC951, RFC1532) exclusively as mandated
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* by PowerPC Reference Platform Specification I.4.2
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*/
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bootp(netdev_sock);
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if (myip.s_addr == 0)
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return ETIMEDOUT;
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printf("Using IP address: %s\n", inet_ntoa(myip));
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#ifdef DEBUG
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printf("myip: %s (%s)", hostname, inet_ntoa(myip));
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if (gateip.s_addr)
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printf(", gateip: %s", inet_ntoa(gateip));
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if (netmask)
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printf(", netmask: %s", intoa(netmask));
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printf("\n");
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#endif
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printf("root addr=%s path=%s\n", inet_ntoa(rootip), rootpath);
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/*
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* Get the NFS file handle (mount).
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*/
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if (nfs_mount(netdev_sock, rootip, rootpath) < 0)
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return errno;
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return 0;
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}
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