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/* $OpenBSD: netio.c,v 1.5 2011/08/18 20:02:58 miod Exp $ */
/* $NetBSD: netio.c,v 1.5 1997/01/30 10:32:56 thorpej Exp $ */
/*
* Copyright (c) 1995, 1996 Jason R. Thorpe
* Copyright (c) 1995 Gordon W. Ross
* 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.
*/
/*
* 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()
* RARP for IP address - rarp_getipaddress()
* RPC/bootparams - callrpc(d, RPC_BOOTPARAMS, ...)
* RPC/mountd - nfs_mount(sock, ip, path)
*
* the root file handle from mountd is saved in a global
* for use by the NFS open code (NFS/lookup).
*/
#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 "samachdep.h"
#include <lib/libsa/net.h>
#include <lib/libsa/netif.h>
#include <lib/libsa/bootparam.h>
#include <lib/libsa/nfs.h>
extern int nfs_root_node[]; /* XXX - get from nfs_mount() */
/* Why be any different? */
#define SUN_BOOTPARAMS
#ifndef SUN_BOOTPARAMS
n_long netmask;
#endif
int netdev_sock = -1;
static int open_count;
int netclose(struct open_file *);
int netmountroot(struct open_file *, char *);
int netopen(struct open_file *, char *);
int netstrategy(void *, int, daddr32_t, size_t, void *, size_t *);
/*
* 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
netopen(struct open_file *f, char *devname)
{
int error = 0;
/* On first open, do netif open, mount, etc. */
if (open_count == 0) {
/* Find network interface. */
if ((netdev_sock = netif_open(devname)) < 0)
return (error=ENXIO);
if ((error = netmountroot(f, devname)) != 0)
return (error);
}
open_count++;
f->f_devdata = nfs_root_node;
return (error);
}
int
netclose(struct open_file *f)
{
/* On last close, do netif close, etc. */
if (open_count > 0)
if (--open_count == 0)
netif_close(netdev_sock);
f->f_devdata = NULL;
return (0);
}
int
netstrategy(void *devdata, int func, daddr32_t dblk, size_t size, void *v_buf,
size_t *rsize)
{
*rsize = size;
return EIO;
}
int
netmountroot(struct open_file *f, char *devname)
{
#ifdef DEBUG
printf("netmountroot: %s\n", devname);
#endif
/*
* Get info for NFS boot: our IP address, our hostname,
* server IP address, and our root path on the server.
* There are two ways to do this: The old, Sun way,
* and the more modern, BOOTP way. (RFC951, RFC1048)
*/
#ifdef SUN_BOOTPARAMS
/* Get boot info using RARP and Sun bootparams. */
/* Get our IP address. (rarp.c) */
if (rarp_getipaddress(netdev_sock) == -1)
return (errno);
printf("boot: client IP address: %s\n", inet_ntoa(myip));
/* Get our hostname, server IP address. */
if (bp_whoami(netdev_sock))
return (errno);
printf("boot: client name: %s\n", hostname);
/* Get the root pathname. */
if (bp_getfile(netdev_sock, "root", &rootip, rootpath))
return (errno);
#else
/* Get boot info using BOOTP way. (RFC951, RFC1048) */
bootp(netdev_sock);
printf("Using IP address: %s\n", inet_ntoa(myip));
printf("myip: %s (%s)", hostname, inet_ntoa(myip));
if (mask)
printf(", mask: %s", intoa(netmask));
printf("\n");
#endif /* SUN_BOOTPARAMS */
printf("root addr=%s path=%s\n", inet_ntoa(rootip), rootpath);
/* Get the NFS file handle (mount). */
return nfs_mount(netdev_sock, rootip, rootpath);
}
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