net.c revision 1.1.2.2
1 1.1.2.2 nathanw /* $NetBSD: net.c,v 1.1.2.2 2002/02/28 04:11:59 nathanw Exp $ */ 2 1.1.2.2 nathanw 3 1.1.2.2 nathanw /* 4 1.1.2.2 nathanw * Copyright (C) 1995 Wolfgang Solfrank. 5 1.1.2.2 nathanw * Copyright (C) 1995 TooLs GmbH. 6 1.1.2.2 nathanw * All rights reserved. 7 1.1.2.2 nathanw * 8 1.1.2.2 nathanw * Redistribution and use in source and binary forms, with or without 9 1.1.2.2 nathanw * modification, are permitted provided that the following conditions 10 1.1.2.2 nathanw * are met: 11 1.1.2.2 nathanw * 1. Redistributions of source code must retain the above copyright 12 1.1.2.2 nathanw * notice, this list of conditions and the following disclaimer. 13 1.1.2.2 nathanw * 2. Redistributions in binary form must reproduce the above copyright 14 1.1.2.2 nathanw * notice, this list of conditions and the following disclaimer in the 15 1.1.2.2 nathanw * documentation and/or other materials provided with the distribution. 16 1.1.2.2 nathanw * 3. All advertising materials mentioning features or use of this software 17 1.1.2.2 nathanw * must display the following acknowledgement: 18 1.1.2.2 nathanw * This product includes software developed by TooLs GmbH. 19 1.1.2.2 nathanw * 4. The name of TooLs GmbH may not be used to endorse or promote products 20 1.1.2.2 nathanw * derived from this software without specific prior written permission. 21 1.1.2.2 nathanw * 22 1.1.2.2 nathanw * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR 23 1.1.2.2 nathanw * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 1.1.2.2 nathanw * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 1.1.2.2 nathanw * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 26 1.1.2.2 nathanw * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 27 1.1.2.2 nathanw * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 28 1.1.2.2 nathanw * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 29 1.1.2.2 nathanw * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 30 1.1.2.2 nathanw * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 31 1.1.2.2 nathanw * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 1.1.2.2 nathanw */ 33 1.1.2.2 nathanw 34 1.1.2.2 nathanw /* 35 1.1.2.2 nathanw * This module implements a "raw device" interface suitable for 36 1.1.2.2 nathanw * use by the stand-alone I/O library NFS code. This interface 37 1.1.2.2 nathanw * does not support any "block" access, and exists only for the 38 1.1.2.2 nathanw * purpose of initializing the network interface, getting boot 39 1.1.2.2 nathanw * parameters, and performing the NFS mount. 40 1.1.2.2 nathanw * 41 1.1.2.2 nathanw * At open time, this does: 42 1.1.2.2 nathanw * 43 1.1.2.2 nathanw * find interface - netif_open() 44 1.1.2.2 nathanw * BOOTP - bootp() 45 1.1.2.2 nathanw * RPC/mountd - nfs_mount() 46 1.1.2.2 nathanw * 47 1.1.2.2 nathanw * The root file handle from mountd is saved in a global 48 1.1.2.2 nathanw * for use by the NFS open code (NFS/lookup). 49 1.1.2.2 nathanw * 50 1.1.2.2 nathanw * Note: this is based in part on sys/arch/sparc/stand/net.c 51 1.1.2.2 nathanw */ 52 1.1.2.2 nathanw 53 1.1.2.2 nathanw #include <sys/param.h> 54 1.1.2.2 nathanw #include <sys/socket.h> 55 1.1.2.2 nathanw 56 1.1.2.2 nathanw #include <net/if.h> 57 1.1.2.2 nathanw #include <netinet/in.h> 58 1.1.2.2 nathanw #include <netinet/in_systm.h> 59 1.1.2.2 nathanw 60 1.1.2.2 nathanw #include <lib/libsa/stand.h> 61 1.1.2.2 nathanw #include <lib/libsa/net.h> 62 1.1.2.2 nathanw #include <lib/libsa/netif.h> 63 1.1.2.2 nathanw 64 1.1.2.2 nathanw #include <lib/libkern/libkern.h> 65 1.1.2.2 nathanw 66 1.1.2.2 nathanw char rootpath[FNAME_SIZE]; 67 1.1.2.2 nathanw 68 1.1.2.2 nathanw static int netdev_sock = -1; 69 1.1.2.2 nathanw static int open_count; 70 1.1.2.2 nathanw 71 1.1.2.2 nathanw /* 72 1.1.2.2 nathanw * Called by devopen after it sets f->f_dev to our devsw entry. 73 1.1.2.2 nathanw * This opens the low-level device and sets f->f_devdata. 74 1.1.2.2 nathanw */ 75 1.1.2.2 nathanw int 76 1.1.2.2 nathanw net_open(op) 77 1.1.2.2 nathanw struct of_dev *op; 78 1.1.2.2 nathanw { 79 1.1.2.2 nathanw int error = 0; 80 1.1.2.2 nathanw 81 1.1.2.2 nathanw /* 82 1.1.2.2 nathanw * On first open, do netif open, mount, etc. 83 1.1.2.2 nathanw */ 84 1.1.2.2 nathanw if (open_count == 0) { 85 1.1.2.2 nathanw /* Find network interface. */ 86 1.1.2.2 nathanw if ((netdev_sock = netif_open(op)) < 0) { 87 1.1.2.2 nathanw error = errno; 88 1.1.2.2 nathanw goto bad; 89 1.1.2.2 nathanw } 90 1.1.2.2 nathanw if ((error = net_mountroot()) != 0) 91 1.1.2.2 nathanw goto bad; 92 1.1.2.2 nathanw } 93 1.1.2.2 nathanw open_count++; 94 1.1.2.2 nathanw bad: 95 1.1.2.2 nathanw if (netdev_sock >= 0 && open_count == 0) { 96 1.1.2.2 nathanw netif_close(netdev_sock); 97 1.1.2.2 nathanw netdev_sock = -1; 98 1.1.2.2 nathanw } 99 1.1.2.2 nathanw return error; 100 1.1.2.2 nathanw } 101 1.1.2.2 nathanw 102 1.1.2.2 nathanw int 103 1.1.2.2 nathanw net_close(op) 104 1.1.2.2 nathanw struct of_dev *op; 105 1.1.2.2 nathanw { 106 1.1.2.2 nathanw /* 107 1.1.2.2 nathanw * On last close, do netif close, etc. 108 1.1.2.2 nathanw */ 109 1.1.2.2 nathanw if (open_count > 0) 110 1.1.2.2 nathanw if (--open_count == 0) { 111 1.1.2.2 nathanw netif_close(netdev_sock); 112 1.1.2.2 nathanw netdev_sock = -1; 113 1.1.2.2 nathanw } 114 1.1.2.2 nathanw } 115 1.1.2.2 nathanw 116 1.1.2.2 nathanw int 117 1.1.2.2 nathanw net_mountroot() 118 1.1.2.2 nathanw { 119 1.1.2.2 nathanw 120 1.1.2.2 nathanw #ifdef DEBUG 121 1.1.2.2 nathanw printf("net_mountroot\n"); 122 1.1.2.2 nathanw #endif 123 1.1.2.2 nathanw 124 1.1.2.2 nathanw /* 125 1.1.2.2 nathanw * Get info for NFS boot: our IP address, out hostname, 126 1.1.2.2 nathanw * server IP address, and our root path on the server. 127 1.1.2.2 nathanw * We use BOOTP (RFC951, RFC1532) exclusively as mandated 128 1.1.2.2 nathanw * by PowerPC Reference Platform Specification I.4.2 129 1.1.2.2 nathanw */ 130 1.1.2.2 nathanw 131 1.1.2.2 nathanw bootp(netdev_sock); 132 1.1.2.2 nathanw 133 1.1.2.2 nathanw if (myip.s_addr == 0) 134 1.1.2.2 nathanw return ETIMEDOUT; 135 1.1.2.2 nathanw 136 1.1.2.2 nathanw printf("Using IP address: %s\n", inet_ntoa(myip)); 137 1.1.2.2 nathanw 138 1.1.2.2 nathanw #ifdef DEBUG 139 1.1.2.2 nathanw printf("myip: %s (%s)", hostname, inet_ntoa(myip)); 140 1.1.2.2 nathanw if (gateip.s_addr) 141 1.1.2.2 nathanw printf(", gateip: %s", inet_ntoa(gateip)); 142 1.1.2.2 nathanw if (netmask) 143 1.1.2.2 nathanw printf(", netmask: %s", intoa(netmask)); 144 1.1.2.2 nathanw printf("\n"); 145 1.1.2.2 nathanw #endif 146 1.1.2.2 nathanw printf("root addr=%s path=%s\n", inet_ntoa(rootip), rootpath); 147 1.1.2.2 nathanw 148 1.1.2.2 nathanw /* 149 1.1.2.2 nathanw * Get the NFS file handle (mount). 150 1.1.2.2 nathanw */ 151 1.1.2.2 nathanw if (nfs_mount(netdev_sock, rootip, rootpath) < 0) 152 1.1.2.2 nathanw return errno; 153 1.1.2.2 nathanw return 0; 154 1.1.2.2 nathanw } 155
Indexes created Fri Oct 03 02:09:57 GMT 2025