| version 1.37.2.2, 2001/03/13 20:29:50 |
version 1.37.2.3, 2001/04/09 01:58:39 |
|
|
| /* $NetBSD$ */ |
/* $NetBSD$ */ |
| /* $KAME: ip6_input.c,v 1.183 2001/03/01 15:15:23 itojun Exp $ */ |
/* $KAME: ip6_input.c,v 1.188 2001/03/29 05:34:31 itojun Exp $ */ |
| |
|
| /* |
/* |
| * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. |
* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. |
|
|
| else |
else |
| ip6stat.ip6s_mext1++; |
ip6stat.ip6s_mext1++; |
| } else { |
} else { |
| |
#define M2MMAX (sizeof(ip6stat.ip6s_m2m)/sizeof(ip6stat.ip6s_m2m[0])) |
| if (m->m_next) { |
if (m->m_next) { |
| if (m->m_flags & M_LOOP) { |
if (m->m_flags & M_LOOP) { |
| ip6stat.ip6s_m2m[loif[0].if_index]++; /*XXX*/ |
ip6stat.ip6s_m2m[loif[0].if_index]++; /*XXX*/ |
| } else if (m->m_pkthdr.rcvif->if_index <= 31) |
} else if (m->m_pkthdr.rcvif->if_index < M2MMAX) |
| ip6stat.ip6s_m2m[m->m_pkthdr.rcvif->if_index]++; |
ip6stat.ip6s_m2m[m->m_pkthdr.rcvif->if_index]++; |
| else |
else |
| ip6stat.ip6s_m2m[0]++; |
ip6stat.ip6s_m2m[0]++; |
| } else |
} else |
| ip6stat.ip6s_m1++; |
ip6stat.ip6s_m1++; |
| |
#undef M2MMAX |
| } |
} |
| |
|
| in6_ifstat_inc(m->m_pkthdr.rcvif, ifs6_in_receive); |
in6_ifstat_inc(m->m_pkthdr.rcvif, ifs6_in_receive); |
|
|
| * Note that filters must _never_ set this flag, as another filter |
* Note that filters must _never_ set this flag, as another filter |
| * in the list may have previously cleared it. |
* in the list may have previously cleared it. |
| */ |
*/ |
| if (pfil_run_hooks(&inet6_pfil_hook, &m, m->m_pkthdr.rcvif, |
/* |
| PFIL_IN) != 0) |
* let ipfilter look at packet on the wire, |
| return; |
* not the decapsulated packet. |
| if (m == NULL) |
*/ |
| return; |
#ifdef IPSEC |
| ip6 = mtod(m, struct ip6_hdr *); |
if (!ipsec_gethist(m, NULL)) |
| |
#else |
| |
if (1) |
| |
#endif |
| |
{ |
| |
if (pfil_run_hooks(&inet6_pfil_hook, &m, m->m_pkthdr.rcvif, |
| |
PFIL_IN) != 0) |
| |
return; |
| |
if (m == NULL) |
| |
return; |
| |
ip6 = mtod(m, struct ip6_hdr *); |
| |
} |
| #endif /* PFIL_HOOKS */ |
#endif /* PFIL_HOOKS */ |
| |
|
| |
|
|
|
| } |
} |
| } |
} |
| |
|
| #ifndef FAKE_LOOPBACK_IF |
/* drop packets if interface ID portion is already filled */ |
| if ((m->m_pkthdr.rcvif->if_flags & IFF_LOOPBACK) == 0) |
if ((m->m_pkthdr.rcvif->if_flags & IFF_LOOPBACK) == 0) { |
| #else |
if (IN6_IS_SCOPE_LINKLOCAL(&ip6->ip6_src) && |
| if (1) |
ip6->ip6_src.s6_addr16[1]) { |
| #endif |
ip6stat.ip6s_badscope++; |
| { |
goto bad; |
| if (IN6_IS_SCOPE_LINKLOCAL(&ip6->ip6_src)) |
} |
| ip6->ip6_src.s6_addr16[1] |
if (IN6_IS_SCOPE_LINKLOCAL(&ip6->ip6_dst) && |
| = htons(m->m_pkthdr.rcvif->if_index); |
ip6->ip6_dst.s6_addr16[1]) { |
| if (IN6_IS_SCOPE_LINKLOCAL(&ip6->ip6_dst)) |
ip6stat.ip6s_badscope++; |
| ip6->ip6_dst.s6_addr16[1] |
goto bad; |
| = htons(m->m_pkthdr.rcvif->if_index); |
} |
| } |
} |
| |
|
| /* |
if (IN6_IS_SCOPE_LINKLOCAL(&ip6->ip6_src)) |
| * XXX we need this since we do not have "goto ours" hack route |
ip6->ip6_src.s6_addr16[1] |
| * for some of our ifaddrs on loopback interface. |
= htons(m->m_pkthdr.rcvif->if_index); |
| * we should correct it by changing in6_ifattach to install |
if (IN6_IS_SCOPE_LINKLOCAL(&ip6->ip6_dst)) |
| * "goto ours" hack route. |
ip6->ip6_dst.s6_addr16[1] |
| */ |
= htons(m->m_pkthdr.rcvif->if_index); |
| if ((m->m_pkthdr.rcvif->if_flags & IFF_LOOPBACK) != 0) { |
|
| if (IN6_IS_ADDR_LINKLOCAL(&ip6->ip6_dst)) { |
/* |
| ours = 1; |
* We use rt->rt_ifp to determine if the address is ours or not. |
| deliverifp = m->m_pkthdr.rcvif; |
* If rt_ifp is lo0, the address is ours. |
| goto hbhcheck; |
* The problem here is, rt->rt_ifp for fe80::%lo0/64 is set to lo0, |
| |
* so any address under fe80::%lo0/64 will be mistakenly considered |
| |
* local. The special case is supplied to handle the case properly |
| |
* by actually looking at interface addresses |
| |
* (using in6ifa_ifpwithaddr). |
| |
*/ |
| |
if ((m->m_pkthdr.rcvif->if_flags & IFF_LOOPBACK) != 0 && |
| |
IN6_IS_ADDR_LINKLOCAL(&ip6->ip6_dst)) { |
| |
if (!in6ifa_ifpwithaddr(m->m_pkthdr.rcvif, &ip6->ip6_dst)) { |
| |
icmp6_error(m, ICMP6_DST_UNREACH, |
| |
ICMP6_DST_UNREACH_ADDR, 0); |
| |
/* m is already freed */ |
| |
return; |
| } |
} |
| |
|
| |
ours = 1; |
| |
deliverifp = m->m_pkthdr.rcvif; |
| |
goto hbhcheck; |
| } |
} |
| |
|
| /* |
/* |
|
|
| ip6stat.ip6s_delivered++; |
ip6stat.ip6s_delivered++; |
| in6_ifstat_inc(deliverifp, ifs6_in_deliver); |
in6_ifstat_inc(deliverifp, ifs6_in_deliver); |
| nest = 0; |
nest = 0; |
| |
|
| while (nxt != IPPROTO_DONE) { |
while (nxt != IPPROTO_DONE) { |
| if (ip6_hdrnestlimit && (++nest > ip6_hdrnestlimit)) { |
if (ip6_hdrnestlimit && (++nest > ip6_hdrnestlimit)) { |
| ip6stat.ip6s_toomanyhdr++; |
ip6stat.ip6s_toomanyhdr++; |