07b064e02e
Some of the stuff (e.g., rarpd, bootpd, dhcpd etc., libsa) still will only support Ethernet. Tcpdump itself should be ok, but libpcap needs lot of work. For the detailed change history, look at the commit log entries for the is-newarp branch.
160 lines
4.5 KiB
C
160 lines
4.5 KiB
C
/* $NetBSD: net.c,v 1.4 1997/03/15 18:10:43 is Exp $ */
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/*
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* Copyright (c) 1995 Gordon W. Ross
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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. The name of the author 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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* 4. 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 Gordon W. Ross
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF 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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* RARP for IP address - rarp_getipaddress()
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* RPC/bootparams - callrpc(d, RPC_BOOTPARAMS, ...)
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* RPC/mountd - nfs_mount(sock, ip, path)
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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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#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 "if_ether.h"
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#include <netinet/in_systm.h>
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#include "stand.h"
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#include "net.h"
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#include "netif.h"
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#include "bootparam.h"
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char rootpath[FNAME_SIZE];
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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(pd)
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struct promdata *pd;
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{
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int error = 0;
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/* On first open, do netif open, mount, etc. */
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if (open_count == 0) {
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/* Find network interface. */
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if ((netdev_sock = netif_open(pd)) < 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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return (error);
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}
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int
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net_close(pd)
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struct promdata *pd;
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{
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/* On last close, do netif close, etc. */
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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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}
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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, our hostname,
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* server IP address, and our root path on the server.
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* There are two ways to do this: The old, Sun way,
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* and the more modern, BOOTP way. (RFC951, RFC1048)
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*/
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#ifdef SUN_BOOTPARAMS
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/* Get boot info using RARP and Sun bootparams. */
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/* Get our IP address. (rarp.c) */
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if (rarp_getipaddress(netdev_sock) == -1)
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return errno;
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printf("boot: client IP address: %s\n", inet_ntoa(myip));
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/* Get our hostname, server IP address. */
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if (bp_whoami(netdev_sock))
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return (errno);
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printf("boot: client name: %s\n", hostname);
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/* Get the root pathname. */
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if (bp_getfile(netdev_sock, "root", &rootip, rootpath))
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return (errno);
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#else
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/* Get boot info using BOOTP way. (RFC951, RFC1048) */
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bootp(netdev_sock);
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printf("Using IP address: %s\n", inet_ntoa(myip));
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printf("myip: %s (%s)", hostname, inet_ntoa(myip));
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if (gateip)
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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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/* Get the NFS file handle (mount). */
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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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