Annotation of sys/arch/macppc/stand/net.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: net.c,v 1.4 2003/10/16 04:30:09 drahn Exp $ */
! 2: /* $NetBSD: net.c,v 1.1 1997/04/16 20:29:18 thorpej Exp $ */
! 3:
! 4: /*
! 5: * Copyright (C) 1995 Wolfgang Solfrank.
! 6: * Copyright (C) 1995 TooLs GmbH.
! 7: * All rights reserved.
! 8: *
! 9: * Redistribution and use in source and binary forms, with or without
! 10: * modification, are permitted provided that the following conditions
! 11: * are met:
! 12: * 1. Redistributions of source code must retain the above copyright
! 13: * notice, this list of conditions and the following disclaimer.
! 14: * 2. Redistributions in binary form must reproduce the above copyright
! 15: * notice, this list of conditions and the following disclaimer in the
! 16: * documentation and/or other materials provided with the distribution.
! 17: * 3. All advertising materials mentioning features or use of this software
! 18: * must display the following acknowledgement:
! 19: * This product includes software developed by TooLs GmbH.
! 20: * 4. The name of TooLs GmbH may not be used to endorse or promote products
! 21: * derived from this software without specific prior written permission.
! 22: *
! 23: * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
! 24: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
! 25: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
! 26: * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
! 27: * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
! 28: * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
! 29: * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
! 30: * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
! 31: * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
! 32: * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
! 33: */
! 34:
! 35: /*
! 36: * This module implements a "raw device" interface suitable for
! 37: * use by the stand-alone I/O library NFS code. This interface
! 38: * does not support any "block" access, and exists only for the
! 39: * purpose of initializing the network interface, getting boot
! 40: * parameters, and performing the NFS mount.
! 41: *
! 42: * At open time, this does:
! 43: *
! 44: * find interface - netif_open()
! 45: * BOOTP - bootp()
! 46: * RPC/mountd - nfs_mount()
! 47: *
! 48: * The root file handle from mountd is saved in a global
! 49: * for use by the NFS open code (NFS/lookup).
! 50: *
! 51: * Note: this is based in part on sys/arch/sparc/stand/net.c
! 52: */
! 53:
! 54: #include <sys/param.h>
! 55: #include <sys/socket.h>
! 56: #include <net/if.h>
! 57: #include <netinet/in.h>
! 58: #include <netinet/if_ether.h>
! 59: #include <netinet/in_systm.h>
! 60:
! 61: #include <lib/libsa/stand.h>
! 62: #include <lib/libsa/net.h>
! 63: #include <lib/libsa/netif.h>
! 64:
! 65: char rootpath[FNAME_SIZE];
! 66:
! 67: static int netdev_sock = -1;
! 68: static int open_count;
! 69:
! 70: /*
! 71: * Called by devopen after it sets f->f_dev to our devsw entry.
! 72: * This opens the low-level device and sets f->f_devdata.
! 73: */
! 74: int
! 75: net_open(struct of_dev *op)
! 76: {
! 77: int error = 0;
! 78:
! 79: /*
! 80: * On first open, do netif open, mount, etc.
! 81: */
! 82: if (open_count == 0) {
! 83: /* Find network interface. */
! 84: if ((netdev_sock = netif_open(op)) < 0) {
! 85: error = errno;
! 86: goto bad;
! 87: }
! 88: if ((error = net_mountroot()) != 0)
! 89: goto bad;
! 90: }
! 91: open_count++;
! 92: bad:
! 93: if (netdev_sock >= 0 && open_count == 0) {
! 94: netif_close(netdev_sock);
! 95: netdev_sock = -1;
! 96: }
! 97: return error;
! 98: }
! 99:
! 100: int
! 101: net_close(struct of_dev *op)
! 102: {
! 103: /*
! 104: * On last close, do netif close, etc.
! 105: */
! 106: if (open_count > 0)
! 107: if (--open_count == 0) {
! 108: netif_close(netdev_sock);
! 109: netdev_sock = -1;
! 110: }
! 111: }
! 112:
! 113: int
! 114: net_mountroot()
! 115: {
! 116:
! 117: #ifdef DEBUG
! 118: printf("net_mountroot\n");
! 119: #endif
! 120:
! 121: /*
! 122: * Get info for NFS boot: our IP address, out hostname,
! 123: * server IP address, and our root path on the server.
! 124: * We use BOOTP (RFC951, RFC1532) exclusively as mandated
! 125: * by PowerPC Reference Platform Specification I.4.2
! 126: */
! 127:
! 128: bootp(netdev_sock);
! 129:
! 130: if (myip.s_addr == 0)
! 131: return ETIMEDOUT;
! 132:
! 133: printf("Using IP address: %s\n", inet_ntoa(myip));
! 134:
! 135: #ifdef DEBUG
! 136: printf("myip: %s (%s)", hostname, inet_ntoa(myip));
! 137: if (gateip.s_addr)
! 138: printf(", gateip: %s", inet_ntoa(gateip));
! 139: if (netmask)
! 140: printf(", netmask: %s", intoa(netmask));
! 141: printf("\n");
! 142: #endif
! 143: printf("root addr=%s path=%s\n", inet_ntoa(rootip), rootpath);
! 144:
! 145: /*
! 146: * Get the NFS file handle (mount).
! 147: */
! 148: if (nfs_mount(netdev_sock, rootip, rootpath) < 0)
! 149: return errno;
! 150: return 0;
! 151: }
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