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1 | \ ========== Copyright Header Begin ========================================== |
2 | \ | |
3 | \ Hypervisor Software File: rarp.fth | |
4 | \ | |
5 | \ Copyright (c) 2006 Sun Microsystems, Inc. All Rights Reserved. | |
6 | \ | |
7 | \ - Do no alter or remove copyright notices | |
8 | \ | |
9 | \ - Redistribution and use of this software in source and binary forms, with | |
10 | \ or without modification, are permitted provided that the following | |
11 | \ conditions are met: | |
12 | \ | |
13 | \ - Redistribution of source code must retain the above copyright notice, | |
14 | \ this list of conditions and the following disclaimer. | |
15 | \ | |
16 | \ - Redistribution in binary form must reproduce the above copyright notice, | |
17 | \ this list of conditions and the following disclaimer in the | |
18 | \ documentation and/or other materials provided with the distribution. | |
19 | \ | |
20 | \ Neither the name of Sun Microsystems, Inc. or the names of contributors | |
21 | \ may be used to endorse or promote products derived from this software | |
22 | \ without specific prior written permission. | |
23 | \ | |
24 | \ This software is provided "AS IS," without a warranty of any kind. | |
25 | \ ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, | |
26 | \ INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A | |
27 | \ PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN | |
28 | \ MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR | |
29 | \ ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR | |
30 | \ DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN | |
31 | \ OR ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR | |
32 | \ FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE | |
33 | \ DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, | |
34 | \ ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF | |
35 | \ SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. | |
36 | \ | |
37 | \ You acknowledge that this software is not designed, licensed or | |
38 | \ intended for use in the design, construction, operation or maintenance of | |
39 | \ any nuclear facility. | |
40 | \ | |
41 | \ ========== Copyright Header End ============================================ | |
42 | id: @(#)rarp.fth 1.1 04/09/07 | |
43 | purpose: RARP support | |
44 | copyright: Copyright 2004 Sun Microsystems, Inc. All Rights Reserved | |
45 | copyright: Use is subject to license terms. | |
46 | ||
47 | \ RFC 903: Reverse Address Resolution Protocol | |
48 | ||
49 | headerless | |
50 | ||
51 | \ On receiving a RARP reply, add an ARP table translation for the responder | |
52 | \ as this may eliminate the need for a subsequent ARP request. It is legal | |
53 | \ for the responder to not fill in its IP address in RARP replies. | |
54 | ||
55 | : process-rarp-response ( pkt -- ) | |
56 | dup >arp-tpa my-ip-addr copy-ip-addr ( pkt ) | |
57 | dup >arp-spa inaddr-any? 0= if ( pkt ) | |
58 | dup >arp-spa over >arp-sha arp-add-entry ( pkt ) | |
59 | then drop ( ) | |
60 | ; | |
61 | ||
62 | \ Handle incoming RARP packets. | |
63 | : rarp-input ( pkt len -- ) | |
64 | over swap arp-packet-ok? if ( pkt ) | |
65 | dup >arp-op ntohw@ RARP_REPLY = if ( pkt ) | |
66 | dup >arp-tha if-hwaddr hwaddr= if ( pkt ) | |
67 | dup process-rarp-response ( pkt ) | |
68 | then ( pkt ) | |
69 | then ( pkt ) | |
70 | then ( pkt ) | |
71 | pkt-free ( pkt ) | |
72 | ; | |
73 | ['] rarp-input to (rarp-input) | |
74 | ||
75 | \ Broadcast RARP requests to obtain my IP address. Use exponential | |
76 | \ backoffs (with a maximum timeout of 32 seconds) between retries. | |
77 | ||
78 | /timer instance buffer: rarp-timer | |
79 | ||
80 | : rarp-backoff ( -- ) | |
81 | rarp-timer dup clear-timer 2* d# 32000 min set-timer | |
82 | ; | |
83 | ||
84 | : do-rarp ( -- ) | |
85 | rarp-timer d# 1000 set-timer | |
86 | begin my-ip-addr inaddr-any? while | |
87 | ." Requesting Internet Address for " if-hwaddr if-showaddr cr | |
88 | my-ip-addr if-hwaddr RARP_REQ RARP_TYPE send-arp/rarp-packet | |
89 | begin | |
90 | if-poll | |
91 | my-ip-addr inaddr-any? 0= rarp-timer timer-expired? or | |
92 | until | |
93 | rarp-backoff | |
94 | repeat | |
95 | ; | |
96 | ||
97 | headers |