1: /*
2: * Copyright (c) 1998 by the University of Southern California.
3: * All rights reserved.
4: *
5: * Permission to use, copy, modify, and distribute this software and
6: * its documentation in source and binary forms for lawful
7: * purposes and without fee is hereby granted, provided
8: * that the above copyright notice appear in all copies and that both
9: * the copyright notice and this permission notice appear in supporting
10: * documentation, and that any documentation, advertising materials,
11: * and other materials related to such distribution and use acknowledge
12: * that the software was developed by the University of Southern
13: * California and/or Information Sciences Institute.
14: * The name of the University of Southern California may not
15: * be used to endorse or promote products derived from this software
16: * without specific prior written permission.
17: *
18: * THE UNIVERSITY OF SOUTHERN CALIFORNIA DOES NOT MAKE ANY REPRESENTATIONS
19: * ABOUT THE SUITABILITY OF THIS SOFTWARE FOR ANY PURPOSE. THIS SOFTWARE IS
20: * PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES,
21: * INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
22: * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, TITLE, AND
23: * NON-INFRINGEMENT.
24: *
25: * IN NO EVENT SHALL USC, OR ANY OTHER CONTRIBUTOR BE LIABLE FOR ANY
26: * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES, WHETHER IN CONTRACT,
27: * TORT, OR OTHER FORM OF ACTION, ARISING OUT OF OR IN CONNECTION WITH,
28: * THE USE OR PERFORMANCE OF THIS SOFTWARE.
29: *
30: * Other copyrights might apply to parts of this software and are so
31: * noted when applicable.
32: */
33: /*
34: * Questions concerning this software should be directed to
35: * Pavlin Ivanov Radoslavov (pavlin@catarina.usc.edu)
36: *
37: * $Id: dvmrp_proto.c,v 1.1.1.1 2017/06/12 07:58:55 misho Exp $
38: */
39:
40: #include "defs.h"
41:
42:
43: /* TODO */
44: /*
45: * Process an incoming neighbor probe message.
46: */
47: void
48: dvmrp_accept_probe(src, dst, p, datalen, level)
49: u_int32 src;
50: u_int32 dst;
51: char *p;
52: int datalen;
53: u_int32 level;
54: {
55: return;
56: }
57:
58:
59: /* TODO */
60: /*
61: * Process an incoming route report message.
62: */
63: void
64: dvmrp_accept_report(src, dst, p, datalen, level)
65: u_int32 src;
66: u_int32 dst;
67: register char *p;
68: register int datalen;
69: u_int32 level;
70: {
71: return;
72: }
73:
74:
75: /* TODO */
76: void
77: dvmrp_accept_info_request(src, dst, p, datalen)
78: u_int32 src;
79: u_int32 dst;
80: u_char *p;
81: int datalen;
82: {
83: return;
84: }
85:
86:
87: /*
88: * Process an incoming info reply message.
89: */
90: void
91: dvmrp_accept_info_reply(src, dst, p, datalen)
92: u_int32 src;
93: u_int32 dst;
94: u_char *p;
95: int datalen;
96: {
97: IF_DEBUG(DEBUG_PKT)
98: log(LOG_DEBUG, 0, "ignoring spurious DVMRP info reply from %s to %s",
99: inet_fmt(src, s1), inet_fmt(dst, s2));
100: }
101:
102:
103: /*
104: * Process an incoming neighbor-list message.
105: */
106: void
107: dvmrp_accept_neighbors(src, dst, p, datalen, level)
108: u_int32 src;
109: u_int32 dst;
110: u_char *p;
111: int datalen;
112: u_int32 level;
113: {
114: log(LOG_INFO, 0, "ignoring spurious DVMRP neighbor list from %s to %s",
115: inet_fmt(src, s1), inet_fmt(dst, s2));
116: }
117:
118:
119: /*
120: * Process an incoming neighbor-list message.
121: */
122: void
123: dvmrp_accept_neighbors2(src, dst, p, datalen, level)
124: u_int32 src;
125: u_int32 dst;
126: u_char *p;
127: int datalen;
128: u_int32 level;
129: {
130: IF_DEBUG(DEBUG_PKT)
131: log(LOG_DEBUG, 0,
132: "ignoring spurious DVMRP neighbor list2 from %s to %s",
133: inet_fmt(src, s1), inet_fmt(dst, s2));
134: }
135:
136:
137: /* TODO */
138: /*
139: * Takes the prune message received and then strips it to
140: * determine the (src, grp) pair to be pruned.
141: *
142: * Adds the router to the (src, grp) entry then.
143: *
144: * Determines if further packets have to be sent down that vif
145: *
146: * Determines if a corresponding prune message has to be generated
147: */
148: void
149: dvmrp_accept_prune(src, dst, p, datalen)
150: u_int32 src;
151: u_int32 dst;
152: char *p;
153: int datalen;
154: {
155: return;
156: }
157:
158:
159: /* TODO */
160: /* determine the multicast group and src
161: *
162: * if it does, then determine if a prune was sent
163: * upstream.
164: * if prune sent upstream, send graft upstream and send
165: * ack downstream.
166: *
167: * if no prune sent upstream, change the forwarding bit
168: * for this interface and send ack downstream.
169: *
170: * if no entry exists for this group send ack downstream.
171: */
172: void
173: dvmrp_accept_graft(src, dst, p, datalen)
174: u_int32 src;
175: u_int32 dst;
176: char *p;
177: int datalen;
178: {
179: return;
180: }
181:
182:
183: /* TODO */
184: /*
185: * find out which group is involved first of all
186: * then determine if a graft was sent.
187: * if no graft sent, ignore the message
188: * if graft was sent and the ack is from the right
189: * source, remove the graft timer so that we don't
190: * have send a graft again
191: */
192: void
193: dvmrp_accept_g_ack(src, dst, p, datalen)
194: u_int32 src;
195: u_int32 dst;
196: char *p;
197: int datalen;
198: {
199: return;
200: }
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