| | 1 | /* |
| | 2 | * Copyright (c) 2000-2013 Apple Inc. All rights reserved. |
| | 3 | * |
| | 4 | * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ |
| | 5 | * |
| | 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. |
| | 14 | * |
| | 15 | * Please obtain a copy of the License at |
| | 16 | * http://www.opensource.apple.com/apsl/ and read it before using this file. |
| | 17 | * |
| | 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. |
| | 25 | * |
| | 26 | * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ |
| | 27 | */ |
| | 28 | |
| | 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> |
| | 59 | #include <sys/mcache.h> |
| | 60 | #include <sys/mbuf.h> |
| | 61 | #include <sys/socket.h> |
| | 62 | #include <sys/queue.h> |
| | 63 | #include <kern/debug.h> |
| | 64 | #include <string.h> |
| | 65 | |
| | 66 | #include <net/if.h> |
| | 67 | #include <net/route.h> |
| | 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 | |
| | 76 | int |
| | 77 | route6_input(struct mbuf **mp, int *offp, int proto) |
| | 78 | { |
| | 79 | #pragma unused(proto) |
| | 80 | struct ip6_hdr *ip6; |
| | 81 | struct mbuf *m = *mp; |
| | 82 | struct ip6_rthdr *rh; |
| | 83 | int off = *offp, rhlen; |
| | 84 | #ifdef notyet |
| | 85 | struct ip6aux *ip6a; |
| | 86 | |
| | 87 | ip6a = ip6_findaux(m); |
| | 88 | if (ip6a) { |
| | 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 | } |
| | 96 | #endif /* notyet */ |
| | 97 | |
| | 98 | IP6_EXTHDR_CHECK(m, off, sizeof(*rh), return IPPROTO_DONE); |
| | 99 | |
| | 100 | /* Expect 32-bit aligned data pointer on strict-align platforms */ |
| | 101 | MBUF_STRICT_DATA_ALIGNMENT_CHECK_32(m); |
| | 102 | |
| | 103 | ip6 = mtod(m, struct ip6_hdr *); |
| | 104 | rh = (struct ip6_rthdr *)((caddr_t)ip6 + off); |
| | 105 | |
| | 106 | switch (rh->ip6r_type) { |
| | 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, |
| | 115 | (caddr_t)&rh->ip6r_type - (caddr_t)ip6); |
| | 116 | return (IPPROTO_DONE); |
| | 117 | } |
| | 118 | |
| | 119 | *offp += rhlen; |
| | 120 | return (rh->ip6r_nxt); |
| | 121 | } |
projects / apple / xnu.git / blame_incremental