Annotation of sys/arch/mvme88k/stand/netboot/dev_net.c, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: dev_net.c,v 1.4 2006/05/16 22:52:09 miod Exp $ */
2:
3: /*
4: * Copyright (c) 1995 Gordon W. Ross
5: * All rights reserved.
6: *
7: * Redistribution and use in source and binary forms, with or without
8: * modification, are permitted provided that the following conditions
9: * are met:
10: * 1. Redistributions of source code must retain the above copyright
11: * notice, this list of conditions and the following disclaimer.
12: * 2. Redistributions in binary form must reproduce the above copyright
13: * notice, this list of conditions and the following disclaimer in the
14: * documentation and/or other materials provided with the distribution.
15: * 3. The name of the author may not be used to endorse or promote products
16: * derived from this software without specific prior written permission.
17: * 4. All advertising materials mentioning features or use of this software
18: * must display the following acknowledgement:
19: * This product includes software developed by Gordon W. Ross
20: *
21: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
22: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
23: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
24: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
25: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
26: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
27: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
28: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
30: * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31: */
32:
33: /*
34: * This module implements a "raw device" interface suitable for
35: * use by the stand-alone I/O library NFS code. This interface
36: * does not support any "block" access, and exists only for the
37: * purpose of initializing the network interface, getting boot
38: * parameters, and performing the NFS mount.
39: *
40: * At open time, this does:
41: *
42: * find interface - netif_open()
43: * RARP for IP address - rarp_getipaddress()
44: * RPC/bootparams - callrpc(d, RPC_BOOTPARAMS, ...)
45: * RPC/mountd - nfs_mount(sock, ip, path)
46: *
47: * the root file handle from mountd is saved in a global
48: * for use by the NFS open code (NFS/lookup).
49: */
50:
51: #include <sys/param.h>
52: #include <sys/socket.h>
53: #include <net/if.h>
54: #include <netinet/in.h>
55: #include <netinet/if_ether.h>
56: #include <netinet/in_systm.h>
57:
58: #include <machine/prom.h>
59:
60: #include "stand.h"
61: #include "libsa.h"
62: #include "net.h"
63: #include "netif.h"
64: #include "config.h"
65: #include "bootparam.h"
66: #include "nfs.h"
67:
68: extern int nfs_root_node[]; /* XXX - get from nfs_mount() */
69:
70: struct in_addr myip, rootip, gateip, mask;
71: char rootpath[FNAME_SIZE];
72:
73: int netdev_sock = -1;
74: static int open_count;
75:
76: int net_mountroot(struct open_file *, char *);
77:
78: /*
79: * Called by devopen after it sets f->f_dev to our devsw entry.
80: * This opens the low-level device and sets f->f_devdata.
81: */
82: int
83: net_open(f, devname)
84: struct open_file *f;
85: char *devname; /* Device part of file name (or NULL). */
86: {
87: int error = 0;
88:
89: /* On first open, do netif open, mount, etc. */
90: if (open_count == 0) {
91: /* Find network interface. */
92: if ((netdev_sock = netif_open(devname)) < 0)
93: return (error=ENXIO);
94: if ((error = net_mountroot(f, devname)) != 0)
95: return (error);
96: }
97: open_count++;
98: f->f_devdata = nfs_root_node;
99: return (error);
100: }
101:
102: int
103: net_close(f)
104: struct open_file *f;
105: {
106: /* On last close, do netif close, etc. */
107: if (open_count > 0)
108: if (--open_count == 0)
109: netif_close(netdev_sock);
110: f->f_devdata = NULL;
111: return (0);
112: }
113:
114: int
115: net_ioctl()
116: {
117: return EIO;
118: }
119:
120: int
121: net_strategy()
122: {
123: return EIO;
124: }
125:
126: int
127: net_mountroot(f, devname)
128: struct open_file *f;
129: char *devname; /* Device part of file name (or NULL). */
130: {
131: int error;
132:
133: #ifdef DEBUG
134: printf("net_mountroot: %s\n", devname);
135: #endif
136:
137: /*
138: * Get info for NFS boot: our IP address, our hostname,
139: * server IP address, and our root path on the server.
140: * There are two ways to do this: The old, Sun way,
141: * and the more modern, BOOTP way. (RFC951, RFC1048)
142: */
143:
144: #ifdef SUN_BOOTPARAMS
145: /* Get boot info using RARP and Sun bootparams. */
146:
147: /* Get our IP address. (rarp.c) */
148: if (rarp_getipaddress(netdev_sock) == -1)
149: return (EIO);
150: printf("boot: client IP address: %s\n", intoa(myip.s_addr));
151:
152: /* Get our hostname, server IP address. */
153: if (bp_whoami(netdev_sock))
154: return (EIO);
155: printf("boot: client name: %s\n", hostname);
156:
157: /* Get the root pathname. */
158: if (bp_getfile(netdev_sock, "root", &rootip, rootpath))
159: return (EIO);
160:
161: #else
162:
163: /* Get boot info using BOOTP way. (RFC951, RFC1048) */
164: bootp(netdev_sock);
165:
166: printf("Using IP address: %s\n", intoa(myip.s_addr));
167:
168: printf("myip: %s (%s)", hostname, intoa(myip));
169: if (gateip)
170: printf(", gateip: %s", intoa(gateip));
171: if (mask)
172: printf(", mask: %s", intoa(mask));
173: printf("\n");
174:
175: #endif
176:
177: printf("root addr=%s path=%s\n", intoa(rootip.s_addr), rootpath);
178:
179: /* Get the NFS file handle (mount). */
180: error = nfs_mount(netdev_sock, rootip, rootpath);
181:
182: return (error);
183: }
184:
185: /*
186: * machdep_common_ether: get ethernet address
187: */
188: void
189: machdep_common_ether(ether)
190: u_char *ether;
191: {
192: u_char *ea;
193:
194: ea = (u_char *) ETHER_ADDR_16X;
195:
196: if (ea[0] + ea[1] + ea[2] + ea[3] + ea[4] + ea[5] == 0)
197: panic("ERROR: ethernet address not set!");
198: ether[0] = ea[0];
199: ether[1] = ea[1];
200: ether[2] = ea[2];
201: ether[3] = ea[3];
202: ether[4] = ea[4];
203: ether[5] = ea[5];
204: }
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