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6d2010ae | 1 | /* |
39236c6e | 2 | * Copyright (c) 2000-2013 Apple Inc. All rights reserved. |
6d2010ae A |
3 | * |
4 | * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ | |
39236c6e | 5 | * |
6d2010ae A |
6 | * This file contains Original Code and/or Modifications of Original Code |
7 | * as defined in and that are subject to the Apple Public Source License | |
8 | * Version 2.0 (the 'License'). You may not use this file except in | |
9 | * compliance with the License. The rights granted to you under the License | |
10 | * may not be used to create, or enable the creation or redistribution of, | |
11 | * unlawful or unlicensed copies of an Apple operating system, or to | |
12 | * circumvent, violate, or enable the circumvention or violation of, any | |
13 | * terms of an Apple operating system software license agreement. | |
39236c6e | 14 | * |
6d2010ae A |
15 | * Please obtain a copy of the License at |
16 | * http://www.opensource.apple.com/apsl/ and read it before using this file. | |
39236c6e | 17 | * |
6d2010ae A |
18 | * The Original Code and all software distributed under the License are |
19 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER | |
20 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, | |
21 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, | |
22 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. | |
23 | * Please see the License for the specific language governing rights and | |
24 | * limitations under the License. | |
39236c6e | 25 | * |
6d2010ae A |
26 | * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ |
27 | */ | |
28 | ||
1c79356b A |
29 | /* |
30 | * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. | |
31 | * All rights reserved. | |
32 | * | |
33 | * Redistribution and use in source and binary forms, with or without | |
34 | * modification, are permitted provided that the following conditions | |
35 | * are met: | |
36 | * 1. Redistributions of source code must retain the above copyright | |
37 | * notice, this list of conditions and the following disclaimer. | |
38 | * 2. Redistributions in binary form must reproduce the above copyright | |
39 | * notice, this list of conditions and the following disclaimer in the | |
40 | * documentation and/or other materials provided with the distribution. | |
41 | * 3. Neither the name of the project nor the names of its contributors | |
42 | * may be used to endorse or promote products derived from this software | |
43 | * without specific prior written permission. | |
44 | * | |
45 | * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND | |
46 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
47 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
48 | * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE | |
49 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
50 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
51 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
52 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
53 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
54 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
55 | * SUCH DAMAGE. | |
56 | */ | |
57 | ||
58 | #include <sys/param.h> | |
316670eb | 59 | #include <sys/mcache.h> |
1c79356b A |
60 | #include <sys/mbuf.h> |
61 | #include <sys/socket.h> | |
9bccf70c | 62 | #include <sys/queue.h> |
316670eb | 63 | #include <kern/debug.h> |
2d21ac55 | 64 | #include <string.h> |
1c79356b A |
65 | |
66 | #include <net/if.h> | |
2d21ac55 | 67 | #include <net/route.h> |
1c79356b A |
68 | |
69 | #include <netinet/in.h> | |
70 | #include <netinet6/in6_var.h> | |
71 | #include <netinet/ip6.h> | |
72 | #include <netinet6/ip6_var.h> | |
73 | ||
74 | #include <netinet/icmp6.h> | |
75 | ||
1c79356b | 76 | int |
6d2010ae | 77 | route6_input(struct mbuf **mp, int *offp, int proto) |
1c79356b | 78 | { |
6d2010ae | 79 | #pragma unused(proto) |
9bccf70c A |
80 | struct ip6_hdr *ip6; |
81 | struct mbuf *m = *mp; | |
82 | struct ip6_rthdr *rh; | |
1c79356b | 83 | int off = *offp, rhlen; |
39236c6e | 84 | #ifdef notyet |
2d21ac55 | 85 | struct ip6aux *ip6a; |
9bccf70c | 86 | |
2d21ac55 A |
87 | ip6a = ip6_findaux(m); |
88 | if (ip6a) { | |
9bccf70c A |
89 | /* XXX reject home-address option before rthdr */ |
90 | if (ip6a->ip6a_flags & IP6A_SWAP) { | |
91 | ip6stat.ip6s_badoptions++; | |
92 | m_freem(m); | |
93 | return IPPROTO_DONE; | |
94 | } | |
95 | } | |
39236c6e | 96 | #endif /* notyet */ |
1c79356b | 97 | |
91447636 | 98 | IP6_EXTHDR_CHECK(m, off, sizeof(*rh), return IPPROTO_DONE); |
316670eb A |
99 | |
100 | /* Expect 32-bit aligned data pointer on strict-align platforms */ | |
101 | MBUF_STRICT_DATA_ALIGNMENT_CHECK_32(m); | |
102 | ||
1c79356b A |
103 | ip6 = mtod(m, struct ip6_hdr *); |
104 | rh = (struct ip6_rthdr *)((caddr_t)ip6 + off); | |
1c79356b | 105 | |
9bccf70c | 106 | switch (rh->ip6r_type) { |
9bccf70c A |
107 | default: |
108 | /* unknown routing type */ | |
109 | if (rh->ip6r_segleft == 0) { | |
110 | rhlen = (rh->ip6r_len + 1) << 3; | |
111 | break; /* Final dst. Just ignore the header. */ | |
112 | } | |
113 | ip6stat.ip6s_badoptions++; | |
114 | icmp6_error(m, ICMP6_PARAM_PROB, ICMP6_PARAMPROB_HEADER, | |
39236c6e A |
115 | (caddr_t)&rh->ip6r_type - (caddr_t)ip6); |
116 | return (IPPROTO_DONE); | |
9bccf70c A |
117 | } |
118 | ||
1c79356b | 119 | *offp += rhlen; |
39236c6e | 120 | return (rh->ip6r_nxt); |
1c79356b | 121 | } |