2010-01-09 17:09:57 +00:00
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/* $NetBSD: dev_net.c,v 1.23 2008/04/28 20:24:06 martin Exp $ */
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1998-08-21 03:17:42 +00:00
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/*-
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* Copyright (c) 1997 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Gordon W. Ross.
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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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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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2003-08-25 23:30:41 +00:00
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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/*-
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1998-08-21 03:17:42 +00:00
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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 <machine/stdarg.h>
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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 <stand.h>
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2017-05-06 20:32:27 +00:00
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#include <stddef.h>
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1999-05-03 09:36:29 +00:00
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#include <string.h>
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1998-08-21 03:17:42 +00:00
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#include <net.h>
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#include <netif.h>
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2000-08-11 08:36:17 +00:00
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#include <bootp.h>
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1998-08-21 03:17:42 +00:00
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#include <bootparam.h>
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#include "dev_net.h"
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#include "bootstrap.h"
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2009-12-24 15:16:16 +00:00
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#ifdef NETIF_DEBUG
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1998-08-21 03:17:42 +00:00
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int debug = 0;
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2009-12-24 15:16:16 +00:00
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#endif
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1998-08-21 03:17:42 +00:00
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2010-01-09 21:23:39 +00:00
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static char *netdev_name;
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1998-08-21 03:17:42 +00:00
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static int netdev_sock = -1;
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static int netdev_opens;
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static int net_init(void);
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1999-09-01 09:11:14 +00:00
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static int net_open(struct open_file *, ...);
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1998-08-21 03:17:42 +00:00
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static int net_close(struct open_file *);
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2010-01-09 21:23:39 +00:00
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static void net_cleanup(void);
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2017-05-06 20:32:27 +00:00
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static int net_strategy(void *, int, daddr_t, size_t, char *, size_t *);
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2016-11-08 06:50:18 +00:00
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static int net_print(int);
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1998-08-21 03:17:42 +00:00
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static int net_getparams(int sock);
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struct devsw netdev = {
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2008-09-03 17:41:44 +00:00
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"net",
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DEVT_NET,
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net_init,
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net_strategy,
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net_open,
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net_close,
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noioctl,
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2010-01-09 21:23:39 +00:00
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net_print,
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net_cleanup
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1998-08-21 03:17:42 +00:00
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};
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2017-05-27 12:06:52 +00:00
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static struct uri_scheme {
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const char *scheme;
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int proto;
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} uri_schemes[] = {
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{ "tftp:/", NET_TFTP },
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{ "nfs:/", NET_NFS },
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};
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2009-12-24 15:16:16 +00:00
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static int
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1998-08-21 03:17:42 +00:00
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net_init(void)
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{
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2008-09-03 17:41:44 +00:00
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return (0);
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1998-08-21 03:17:42 +00:00
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}
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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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* This is declared with variable arguments...
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*/
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2009-12-24 15:16:16 +00:00
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static int
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1999-09-01 09:11:14 +00:00
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net_open(struct open_file *f, ...)
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1998-08-21 03:17:42 +00:00
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{
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2015-05-18 15:46:43 +00:00
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struct iodesc *d;
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2008-09-03 17:41:44 +00:00
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va_list args;
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char *devname; /* Device part of file name (or NULL). */
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int error = 0;
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va_start(args, f);
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devname = va_arg(args, char*);
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va_end(args);
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2010-01-09 21:23:39 +00:00
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/* Before opening another interface, close the previous one first. */
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if (netdev_sock >= 0 && strcmp(devname, netdev_name) != 0)
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net_cleanup();
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2008-09-03 17:41:44 +00:00
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/* On first open, do netif open, mount, etc. */
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if (netdev_opens == 0) {
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/* Find network interface. */
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if (netdev_sock < 0) {
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netdev_sock = netif_open(devname);
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if (netdev_sock < 0) {
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printf("net_open: netif_open() failed\n");
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return (ENXIO);
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}
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2010-01-09 21:23:39 +00:00
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netdev_name = strdup(devname);
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2009-12-24 15:16:16 +00:00
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#ifdef NETIF_DEBUG
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2008-09-03 17:41:44 +00:00
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if (debug)
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2009-12-24 15:16:16 +00:00
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printf("net_open: netif_open() succeeded\n");
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#endif
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2008-09-03 17:41:44 +00:00
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}
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2015-05-18 15:46:43 +00:00
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/*
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* If network params were not set by netif_open(), try to get
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* them via bootp, rarp, etc.
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*/
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2008-09-03 17:41:44 +00:00
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if (rootip.s_addr == 0) {
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/* Get root IP address, and path, etc. */
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error = net_getparams(netdev_sock);
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if (error) {
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1998-08-21 03:17:42 +00:00
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/* getparams makes its own noise */
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2010-01-09 21:23:39 +00:00
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free(netdev_name);
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2008-09-03 17:41:44 +00:00
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netif_close(netdev_sock);
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netdev_sock = -1;
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return (error);
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}
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}
|
2015-05-18 15:46:43 +00:00
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/*
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* Set the variables required by the kernel's nfs_diskless
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* mechanism. This is the minimum set of variables required to
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* mount a root filesystem without needing to obtain additional
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* info from bootp or other sources.
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*/
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d = socktodesc(netdev_sock);
|
2016-02-29 07:27:49 +00:00
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setenv("boot.netif.hwaddr", ether_sprintf(d->myea), 1);
|
2015-05-18 15:46:43 +00:00
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setenv("boot.netif.ip", inet_ntoa(myip), 1);
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setenv("boot.netif.netmask", intoa(netmask), 1);
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setenv("boot.netif.gateway", inet_ntoa(gateip), 1);
|
2016-08-31 13:16:40 +00:00
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setenv("boot.netif.server", inet_ntoa(rootip), 1);
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if (netproto == NET_TFTP) {
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setenv("boot.tftproot.server", inet_ntoa(rootip), 1);
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setenv("boot.tftproot.path", rootpath, 1);
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} else if (netproto == NET_NFS) {
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setenv("boot.nfsroot.server", inet_ntoa(rootip), 1);
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setenv("boot.nfsroot.path", rootpath, 1);
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}
|
2016-03-21 15:06:50 +00:00
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if (intf_mtu != 0) {
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char mtu[16];
|
2017-03-20 22:20:17 +00:00
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|
snprintf(mtu, sizeof(mtu), "%u", intf_mtu);
|
2016-03-21 15:06:50 +00:00
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setenv("boot.netif.mtu", mtu, 1);
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}
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|
1998-08-21 03:17:42 +00:00
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}
|
2008-09-03 17:41:44 +00:00
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netdev_opens++;
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return (error);
|
1998-08-21 03:17:42 +00:00
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}
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|
2009-12-24 15:16:16 +00:00
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static int
|
2008-09-03 17:41:44 +00:00
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net_close(struct open_file *f)
|
1998-08-21 03:17:42 +00:00
|
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{
|
2010-01-09 21:23:39 +00:00
|
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|
1998-08-21 03:17:42 +00:00
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#ifdef NETIF_DEBUG
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2008-09-03 17:41:44 +00:00
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if (debug)
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printf("net_close: opens=%d\n", netdev_opens);
|
1998-08-21 03:17:42 +00:00
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#endif
|
2010-01-09 21:23:39 +00:00
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return (0);
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}
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static void
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net_cleanup(void)
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{
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|
2008-09-03 17:41:44 +00:00
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if (netdev_sock >= 0) {
|
2009-12-24 15:16:16 +00:00
|
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|
#ifdef NETIF_DEBUG
|
2008-09-03 17:41:44 +00:00
|
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if (debug)
|
2010-01-09 21:23:39 +00:00
|
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|
printf("net_cleanup: calling netif_close()\n");
|
2009-12-24 15:16:16 +00:00
|
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|
#endif
|
2010-01-09 21:23:39 +00:00
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|
rootip.s_addr = 0;
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free(netdev_name);
|
2008-09-03 17:41:44 +00:00
|
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|
netif_close(netdev_sock);
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netdev_sock = -1;
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}
|
1998-08-21 03:17:42 +00:00
|
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}
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|
2009-12-24 15:16:16 +00:00
|
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static int
|
2017-05-06 20:32:27 +00:00
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|
net_strategy(void *devdata, int rw, daddr_t blk, size_t size, char *buf,
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|
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size_t *rsize)
|
1998-08-21 03:17:42 +00:00
|
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{
|
2008-09-03 17:41:44 +00:00
|
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return (EIO);
|
1998-08-21 03:17:42 +00:00
|
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|
}
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|
#define SUPPORT_BOOTP
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|
|
|
|
|
|
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/*
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|
|
|
* Get info for NFS boot: our IP address, our hostname,
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|
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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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|
* The default is to use the Sun bootparams RPC
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* (because that is what the kernel will do).
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* MD code can make try_bootp initialied data,
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* which will override this common definition.
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*/
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|
#ifdef SUPPORT_BOOTP
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int try_bootp = 1;
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#endif
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|
1999-09-01 09:11:14 +00:00
|
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|
extern n_long ip_convertaddr(char *p);
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|
|
|
1998-08-21 03:17:42 +00:00
|
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static int
|
2008-09-03 17:41:44 +00:00
|
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net_getparams(int sock)
|
1998-08-21 03:17:42 +00:00
|
|
|
{
|
2008-09-03 17:41:44 +00:00
|
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|
char buf[MAXHOSTNAMELEN];
|
2015-05-18 15:46:43 +00:00
|
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|
n_long rootaddr, smask;
|
1998-08-21 03:17:42 +00:00
|
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|
|
|
|
#ifdef SUPPORT_BOOTP
|
2008-09-03 17:41:44 +00:00
|
|
|
/*
|
|
|
|
* Try to get boot info using BOOTP. If we succeed, then
|
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|
|
* the server IP address, gateway, and root path will all
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|
|
* be initialized. If any remain uninitialized, we will
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|
|
|
* use RARP and RPC/bootparam (the Sun way) to get them.
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|
|
|
*/
|
2017-05-27 12:46:46 +00:00
|
|
|
if (try_bootp)
|
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|
|
bootp(sock);
|
2008-09-03 17:41:44 +00:00
|
|
|
if (myip.s_addr != 0)
|
|
|
|
goto exit;
|
2009-12-24 15:16:16 +00:00
|
|
|
#ifdef NETIF_DEBUG
|
2008-09-03 17:41:44 +00:00
|
|
|
if (debug)
|
|
|
|
printf("net_open: BOOTP failed, trying RARP/RPC...\n");
|
2009-12-24 15:16:16 +00:00
|
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|
#endif
|
1998-08-21 03:17:42 +00:00
|
|
|
#endif
|
|
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|
2008-09-03 17:41:44 +00:00
|
|
|
/*
|
|
|
|
* Use RARP to get our IP address. This also sets our
|
|
|
|
* netmask to the "natural" default for our address.
|
|
|
|
*/
|
|
|
|
if (rarp_getipaddress(sock)) {
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|
|
|
printf("net_open: RARP failed\n");
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|
|
|
return (EIO);
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|
|
|
}
|
|
|
|
printf("net_open: client addr: %s\n", inet_ntoa(myip));
|
1998-08-21 03:17:42 +00:00
|
|
|
|
2008-09-03 17:41:44 +00:00
|
|
|
/* Get our hostname, server IP address, gateway. */
|
|
|
|
if (bp_whoami(sock)) {
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|
|
|
printf("net_open: bootparam/whoami RPC failed\n");
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|
|
return (EIO);
|
|
|
|
}
|
2009-12-24 15:16:16 +00:00
|
|
|
#ifdef NETIF_DEBUG
|
2008-09-03 17:41:44 +00:00
|
|
|
if (debug)
|
|
|
|
printf("net_open: client name: %s\n", hostname);
|
2009-12-24 15:16:16 +00:00
|
|
|
#endif
|
2008-09-03 17:41:44 +00:00
|
|
|
|
|
|
|
/*
|
|
|
|
* Ignore the gateway from whoami (unreliable).
|
|
|
|
* Use the "gateway" parameter instead.
|
|
|
|
*/
|
|
|
|
smask = 0;
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|
|
|
gateip.s_addr = 0;
|
|
|
|
if (bp_getfile(sock, "gateway", &gateip, buf) == 0) {
|
|
|
|
/* Got it! Parse the netmask. */
|
|
|
|
smask = ip_convertaddr(buf);
|
|
|
|
}
|
|
|
|
if (smask) {
|
|
|
|
netmask = smask;
|
2009-12-24 15:16:16 +00:00
|
|
|
#ifdef NETIF_DEBUG
|
2008-09-03 17:41:44 +00:00
|
|
|
if (debug)
|
2009-12-24 15:16:16 +00:00
|
|
|
printf("net_open: subnet mask: %s\n", intoa(netmask));
|
|
|
|
#endif
|
2008-09-03 17:41:44 +00:00
|
|
|
}
|
2009-12-24 15:16:16 +00:00
|
|
|
#ifdef NETIF_DEBUG
|
2008-09-03 17:41:44 +00:00
|
|
|
if (gateip.s_addr && debug)
|
|
|
|
printf("net_open: net gateway: %s\n", inet_ntoa(gateip));
|
2009-12-24 15:16:16 +00:00
|
|
|
#endif
|
2008-09-03 17:41:44 +00:00
|
|
|
|
|
|
|
/* Get the root server and pathname. */
|
|
|
|
if (bp_getfile(sock, "root", &rootip, rootpath)) {
|
|
|
|
printf("net_open: bootparam/getfile RPC failed\n");
|
|
|
|
return (EIO);
|
|
|
|
}
|
|
|
|
exit:
|
2017-05-27 12:06:52 +00:00
|
|
|
if ((rootaddr = net_parse_rootpath()) != INADDR_NONE)
|
2015-05-18 15:46:43 +00:00
|
|
|
rootip.s_addr = rootaddr;
|
|
|
|
|
2009-12-24 15:16:16 +00:00
|
|
|
#ifdef NETIF_DEBUG
|
2008-09-03 17:41:44 +00:00
|
|
|
if (debug) {
|
|
|
|
printf("net_open: server addr: %s\n", inet_ntoa(rootip));
|
|
|
|
printf("net_open: server path: %s\n", rootpath);
|
|
|
|
}
|
2009-12-24 15:16:16 +00:00
|
|
|
#endif
|
2008-09-03 17:41:44 +00:00
|
|
|
|
|
|
|
return (0);
|
1998-08-21 03:17:42 +00:00
|
|
|
}
|
2000-11-10 06:37:43 +00:00
|
|
|
|
2016-11-08 06:50:18 +00:00
|
|
|
static int
|
2000-11-10 06:37:43 +00:00
|
|
|
net_print(int verbose)
|
|
|
|
{
|
2008-09-03 17:41:44 +00:00
|
|
|
struct netif_driver *drv;
|
|
|
|
int i, d, cnt;
|
2016-11-08 06:50:18 +00:00
|
|
|
int ret = 0;
|
2008-09-03 17:41:44 +00:00
|
|
|
|
2016-11-19 08:54:21 +00:00
|
|
|
if (netif_drivers[0] == NULL)
|
|
|
|
return (ret);
|
|
|
|
|
|
|
|
printf("%s devices:", netdev.dv_name);
|
|
|
|
if ((ret = pager_output("\n")) != 0)
|
|
|
|
return (ret);
|
|
|
|
|
2008-09-03 17:41:44 +00:00
|
|
|
cnt = 0;
|
|
|
|
for (d = 0; netif_drivers[d]; d++) {
|
|
|
|
drv = netif_drivers[d];
|
|
|
|
for (i = 0; i < drv->netif_nifs; i++) {
|
2016-11-19 08:54:21 +00:00
|
|
|
printf("\t%s%d:", netdev.dv_name, cnt++);
|
2016-11-08 06:50:18 +00:00
|
|
|
if (verbose) {
|
2008-09-03 17:41:44 +00:00
|
|
|
printf(" (%s%d)", drv->netif_bname,
|
|
|
|
drv->netif_ifs[i].dif_unit);
|
2016-11-08 06:50:18 +00:00
|
|
|
}
|
|
|
|
if ((ret = pager_output("\n")) != 0)
|
|
|
|
return (ret);
|
2008-09-03 17:41:44 +00:00
|
|
|
}
|
|
|
|
}
|
2016-11-08 06:50:18 +00:00
|
|
|
return (ret);
|
2000-11-10 06:37:43 +00:00
|
|
|
}
|
2015-05-18 15:46:43 +00:00
|
|
|
|
|
|
|
/*
|
2017-05-27 18:46:00 +00:00
|
|
|
* Parses the rootpath if present
|
|
|
|
*
|
|
|
|
* The rootpath format can be in the form
|
|
|
|
* <scheme>://ip/path
|
|
|
|
* <scheme>:/path
|
|
|
|
*
|
|
|
|
* For compatibility with previous behaviour it also accepts as an NFS scheme
|
|
|
|
* ip:/path
|
|
|
|
* /path
|
|
|
|
*
|
|
|
|
* If an ip is set it returns it in network byte order.
|
|
|
|
* The default scheme defined in the global netproto, if not set it defaults to
|
|
|
|
* NFS.
|
|
|
|
* It leaves just the pathname in the global rootpath.
|
2015-05-18 15:46:43 +00:00
|
|
|
*/
|
|
|
|
uint32_t
|
2017-11-22 10:04:09 +00:00
|
|
|
net_parse_rootpath(void)
|
2015-05-18 15:46:43 +00:00
|
|
|
{
|
2017-05-27 12:06:52 +00:00
|
|
|
n_long addr = htonl(INADDR_NONE);
|
|
|
|
size_t i;
|
|
|
|
char ip[FNAME_SIZE];
|
|
|
|
char *ptr, *val;
|
|
|
|
|
|
|
|
netproto = NET_NONE;
|
|
|
|
|
|
|
|
for (i = 0; i < nitems(uri_schemes); i++) {
|
|
|
|
if (strncmp(rootpath, uri_schemes[i].scheme,
|
|
|
|
strlen(uri_schemes[i].scheme)) != 0)
|
|
|
|
continue;
|
2015-05-18 15:46:43 +00:00
|
|
|
|
2017-05-27 12:06:52 +00:00
|
|
|
netproto = uri_schemes[i].proto;
|
|
|
|
break;
|
|
|
|
}
|
2017-05-22 20:11:40 +00:00
|
|
|
ptr = rootpath;
|
2017-05-27 12:06:52 +00:00
|
|
|
/* Fallback for compatibility mode */
|
|
|
|
if (netproto == NET_NONE) {
|
|
|
|
netproto = NET_NFS;
|
|
|
|
(void)strsep(&ptr, ":");
|
|
|
|
if (ptr != NULL) {
|
|
|
|
addr = inet_addr(rootpath);
|
|
|
|
bcopy(ptr, rootpath, strlen(ptr) + 1);
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
ptr += strlen(uri_schemes[i].scheme);
|
|
|
|
if (*ptr == '/') {
|
|
|
|
/* we are in the form <scheme>://, we do expect an ip */
|
|
|
|
ptr++;
|
|
|
|
/*
|
|
|
|
* XXX when http will be there we will need to check for
|
|
|
|
* a port, but right now we do not need it yet
|
|
|
|
*/
|
|
|
|
val = strchr(ptr, '/');
|
|
|
|
if (val != NULL) {
|
|
|
|
snprintf(ip, sizeof(ip), "%.*s",
|
2017-05-28 21:20:55 +00:00
|
|
|
(int)((uintptr_t)val - (uintptr_t)ptr),
|
|
|
|
ptr);
|
2017-05-27 12:06:52 +00:00
|
|
|
addr = inet_addr(ip);
|
|
|
|
bcopy(val, rootpath, strlen(val) + 1);
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
ptr--;
|
|
|
|
bcopy(ptr, rootpath, strlen(ptr) + 1);
|
|
|
|
}
|
2015-05-18 15:46:43 +00:00
|
|
|
}
|
2016-08-31 13:16:40 +00:00
|
|
|
|
2015-05-18 15:46:43 +00:00
|
|
|
return (addr);
|
|
|
|
}
|