Annotation of embedaddon/pimd/dvmrp_proto.c, revision 1.1.1.1
1.1 misho 1: /*
2: * Copyright (c) 1998-2001
3: * University of Southern California/Information Sciences Institute.
4: * All rights reserved.
5: *
6: * Redistribution and use in source and binary forms, with or without
7: * modification, are permitted provided that the following conditions
8: * are met:
9: * 1. Redistributions of source code must retain the above copyright
10: * notice, this list of conditions and the following disclaimer.
11: * 2. Redistributions in binary form must reproduce the above copyright
12: * notice, this list of conditions and the following disclaimer in the
13: * documentation and/or other materials provided with the distribution.
14: * 3. Neither the name of the project nor the names of its contributors
15: * may be used to endorse or promote products derived from this software
16: * without specific prior written permission.
17: *
18: * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
19: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21: * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
22: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28: * SUCH DAMAGE.
29: */
30: /*
31: * $Id: dvmrp_proto.c,v 1.10 2001/09/10 20:31:36 pavlin Exp $
32: */
33:
34:
35: #include "defs.h"
36:
37:
38: /* TODO */
39: /*
40: * Process an incoming neighbor probe message.
41: */
42: void
43: dvmrp_accept_probe(src, dst, p, datalen, level)
44: uint32_t src __attribute__((unused));
45: uint32_t dst __attribute__((unused));
46: uint8_t *p __attribute__((unused));
47: int datalen __attribute__((unused));
48: uint32_t level __attribute__((unused));
49: {
50: return;
51: }
52:
53:
54: /* TODO */
55: /*
56: * Process an incoming route report message.
57: */
58: void
59: dvmrp_accept_report(src, dst, p, datalen, level)
60: uint32_t src __attribute__((unused));
61: uint32_t dst __attribute__((unused));
62: uint8_t *p __attribute__((unused));
63: int datalen __attribute__((unused));
64: uint32_t level __attribute__((unused));
65: {
66: return;
67: }
68:
69:
70: /* TODO */
71: void
72: dvmrp_accept_info_request(src, dst, p, datalen)
73: uint32_t src __attribute__((unused));
74: uint32_t dst __attribute__((unused));
75: uint8_t *p __attribute__((unused));
76: int datalen __attribute__((unused));
77: {
78: return;
79: }
80:
81:
82: /*
83: * Process an incoming info reply message.
84: */
85: void
86: dvmrp_accept_info_reply(src, dst, p, datalen)
87: uint32_t src;
88: uint32_t dst;
89: uint8_t *p __attribute__((unused));
90: int datalen __attribute__((unused));
91: {
92: IF_DEBUG(DEBUG_PKT)
93: logit(LOG_DEBUG, 0, "ignoring spurious DVMRP info reply from %s to %s",
94: inet_fmt(src, s1, sizeof(s1)), inet_fmt(dst, s2, sizeof(s2)));
95: }
96:
97:
98: /*
99: * Process an incoming neighbor-list message.
100: */
101: void
102: dvmrp_accept_neighbors(src, dst, p, datalen, level)
103: uint32_t src;
104: uint32_t dst;
105: uint8_t *p __attribute__((unused));
106: int datalen __attribute__((unused));
107: uint32_t level __attribute__((unused));
108: {
109: logit(LOG_INFO, 0, "ignoring spurious DVMRP neighbor list from %s to %s",
110: inet_fmt(src, s1, sizeof(s1)), inet_fmt(dst, s2, sizeof(s2)));
111: }
112:
113:
114: /*
115: * Process an incoming neighbor-list message.
116: */
117: void
118: dvmrp_accept_neighbors2(src, dst, p, datalen, level)
119: uint32_t src;
120: uint32_t dst;
121: uint8_t *p __attribute__((unused));
122: int datalen __attribute__((unused));
123: uint32_t level __attribute__((unused));
124: {
125: IF_DEBUG(DEBUG_PKT)
126: logit(LOG_DEBUG, 0,
127: "ignoring spurious DVMRP neighbor list2 from %s to %s",
128: inet_fmt(src, s1, sizeof(s1)), inet_fmt(dst, s2, sizeof(s2)));
129: }
130:
131:
132: /* TODO */
133: /*
134: * Takes the prune message received and then strips it to
135: * determine the (src, grp) pair to be pruned.
136: *
137: * Adds the router to the (src, grp) entry then.
138: *
139: * Determines if further packets have to be sent down that vif
140: *
141: * Determines if a corresponding prune message has to be generated
142: */
143: void
144: dvmrp_accept_prune(src, dst, p, datalen)
145: uint32_t src __attribute__((unused));
146: uint32_t dst __attribute__((unused));
147: uint8_t *p __attribute__((unused));
148: int datalen __attribute__((unused));
149: {
150: return;
151: }
152:
153:
154: /* TODO */
155: /* determine the multicast group and src
156: *
157: * if it does, then determine if a prune was sent
158: * upstream.
159: * if prune sent upstream, send graft upstream and send
160: * ack downstream.
161: *
162: * if no prune sent upstream, change the forwarding bit
163: * for this interface and send ack downstream.
164: *
165: * if no entry exists for this group send ack downstream.
166: */
167: void
168: dvmrp_accept_graft(src, dst, p, datalen)
169: uint32_t src __attribute__((unused));
170: uint32_t dst __attribute__((unused));
171: uint8_t *p __attribute__((unused));
172: int datalen __attribute__((unused));
173: {
174: return;
175: }
176:
177:
178: /* TODO */
179: /*
180: * find out which group is involved first of all
181: * then determine if a graft was sent.
182: * if no graft sent, ignore the message
183: * if graft was sent and the ack is from the right
184: * source, remove the graft timer so that we don't
185: * have send a graft again
186: */
187: void
188: dvmrp_accept_g_ack(src, dst, p, datalen)
189: uint32_t src __attribute__((unused));
190: uint32_t dst __attribute__((unused));
191: uint8_t *p __attribute__((unused));
192: int datalen __attribute__((unused));
193: {
194: return;
195: }
196:
197: /**
198: * Local Variables:
199: * version-control: t
200: * indent-tabs-mode: t
201: * c-file-style: "ellemtel"
202: * c-basic-offset: 4
203: * End:
204: */
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