1/* $FreeBSD: head/sys/netinet6/dest6.c 78064 2001-06-11 12:39:29Z ume $ */ 2/* $KAME: dest6.c,v 1.27 2001/03/29 05:34:30 itojun Exp $ */ |
3 4/* 5 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: --- 19 unchanged lines hidden (view full) --- 30 * SUCH DAMAGE. 31 */ 32 33#include "opt_inet.h" 34#include "opt_inet6.h" 35 36#include <sys/param.h> 37#include <sys/systm.h> |
38#include <sys/malloc.h> |
39#include <sys/mbuf.h> 40#include <sys/domain.h> 41#include <sys/protosw.h> 42#include <sys/socket.h> 43#include <sys/errno.h> 44#include <sys/time.h> |
45#include <sys/kernel.h> |
46 47#include <net/if.h> 48#include <net/route.h> 49 50#include <netinet/in.h> 51#include <netinet/in_var.h> 52#include <netinet/ip6.h> 53#include <netinet6/ip6_var.h> 54#include <netinet/icmp6.h> 55 56/* 57 * Destination options header processing. 58 */ 59int 60dest6_input(mp, offp, proto) 61 struct mbuf **mp; 62 int *offp, proto; 63{ |
64 struct mbuf *m = *mp; |
65 int off = *offp, dstoptlen, optlen; 66 struct ip6_dest *dstopts; 67 u_int8_t *opt; |
68 struct ip6_hdr *ip6; |
69 |
70 ip6 = mtod(m, struct ip6_hdr *); 71 |
72 /* validation of the length of the header */ 73#ifndef PULLDOWN_TEST 74 IP6_EXTHDR_CHECK(m, off, sizeof(*dstopts), IPPROTO_DONE); 75 dstopts = (struct ip6_dest *)(mtod(m, caddr_t) + off); 76#else 77 IP6_EXTHDR_GET(dstopts, struct ip6_dest *, m, off, sizeof(*dstopts)); 78 if (dstopts == NULL) 79 return IPPROTO_DONE; --- 22 unchanged lines hidden (view full) --- 102 103 switch (*opt) { 104 case IP6OPT_PAD1: 105 optlen = 1; 106 break; 107 case IP6OPT_PADN: 108 optlen = *(opt + 1) + 2; 109 break; |
110 111 default: /* unknown option */ 112 optlen = ip6_unknown_opt(opt, m, 113 opt - mtod(m, u_int8_t *)); 114 if (optlen == -1) 115 return (IPPROTO_DONE); 116 optlen += 2; 117 break; |
118 } 119 } 120 121 *offp = off; |
122 return (dstopts->ip6d_nxt); |
123 124 bad: 125 m_freem(m); |
126 return (IPPROTO_DONE); |
127} |