Annotation of sys/arch/sparc64/stand/ofwboot/net.c, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: net.c,v 1.3 2002/03/14 01:26:46 millert Exp $ */
2: /* $NetBSD: net.c,v 1.1 2000/08/20 14:58:38 mrg 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:
57: #include <net/if.h>
58: #include <netinet/in.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:
66: static int net_mountroot_bootparams(void);
67: static int net_mountroot_bootp(void);
68:
69: char rootpath[FNAME_SIZE];
70:
71: static int netdev_sock = -1;
72: static int open_count;
73:
74: /*
75: * Called by devopen after it sets f->f_dev to our devsw entry.
76: * This opens the low-level device and sets f->f_devdata.
77: */
78: int
79: net_open(op)
80: struct of_dev *op;
81: {
82: int error = 0;
83:
84: /*
85: * On first open, do netif open, mount, etc.
86: */
87: if (open_count == 0) {
88: /* Find network interface. */
89: if ((netdev_sock = netif_open(op)) < 0) {
90: error = errno;
91: goto bad;
92: }
93: if ((error = net_mountroot()) != 0)
94: goto bad;
95: }
96: open_count++;
97: bad:
98: if (netdev_sock >= 0 && open_count == 0) {
99: netif_close(netdev_sock);
100: netdev_sock = -1;
101: }
102: return error;
103: }
104:
105: int
106: net_close(op)
107: struct of_dev *op;
108: {
109: /*
110: * On last close, do netif close, etc.
111: */
112: if (open_count > 0)
113: if (--open_count == 0) {
114: netif_close(netdev_sock);
115: netdev_sock = -1;
116: }
117: }
118:
119: int
120: net_mountroot_bootparams()
121: {
122: /* Get our IP address. (rarp.c) */
123: if (rarp_getipaddress(netdev_sock) == -1)
124: return (errno);
125:
126: printf("Using BOOTPARAMS protocol: ");
127: printf("ip address: %s", inet_ntoa(myip));
128:
129: /* Get our hostname, server IP address. */
130: if (bp_whoami(netdev_sock))
131: return (errno);
132:
133: printf(", hostname: %s\n", hostname);
134:
135: /* Get the root pathname. */
136: if (bp_getfile(netdev_sock, "root", &rootip, rootpath))
137: return (errno);
138:
139: return (0);
140: }
141:
142: int
143: net_mountroot_bootp()
144: {
145: bootp(netdev_sock);
146:
147: if (myip.s_addr == 0)
148: return(ENOENT);
149:
150: printf("Using BOOTP protocol: ");
151: printf("ip address: %s", inet_ntoa(myip));
152:
153: if (hostname[0])
154: printf(", hostname: %s", hostname);
155: if (netmask)
156: printf(", netmask: %s", intoa(netmask));
157: if (gateip.s_addr)
158: printf(", gateway: %s", inet_ntoa(gateip));
159: printf("\n");
160:
161: return (0);
162: }
163:
164: int
165: net_mountroot()
166: {
167: int error;
168:
169: #ifdef DEBUG
170: printf("net_mountroot\n");
171: #endif
172:
173: /*
174: * Get info for NFS boot: our IP address, our hostname,
175: * server IP address, and our root path on the server.
176: * There are two ways to do this: The old, Sun way,
177: * and the more modern, BOOTP way. (RFC951, RFC1048)
178: */
179:
180: /* Historically, we've used BOOTPARAMS, so try that first */
181: error = net_mountroot_bootparams();
182: if (error != 0)
183: /* Next, try BOOTP */
184: error = net_mountroot_bootp();
185: if (error != 0)
186: return (error);
187:
188: printf("root addr=%s path=%s\n", inet_ntoa(rootip), rootpath);
189:
190: /* Get the NFS file handle (mount). */
191: if (nfs_mount(netdev_sock, rootip, rootpath) != 0)
192: return (errno);
193:
194: return (0);
195: }
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