| version 1.80, 2005/12/11 12:25:02 |
version 1.80.2.1, 2006/02/01 14:52:41 |
| Line 103 __KERNEL_RCSID(0, "$NetBSD$"); |
|
| Line 103 __KERNEL_RCSID(0, "$NetBSD$"); |
|
| #include <netinet6/ip6_var.h> |
#include <netinet6/ip6_var.h> |
| #include <netinet6/in6_pcb.h> |
#include <netinet6/in6_pcb.h> |
| #include <netinet/icmp6.h> |
#include <netinet/icmp6.h> |
| |
#include <netinet6/scope6_var.h> |
| #include <netinet6/in6_ifattach.h> |
#include <netinet6/in6_ifattach.h> |
| #include <netinet6/nd6.h> |
#include <netinet6/nd6.h> |
| |
|
| Line 139 struct pfil_head inet6_pfil_hook; |
|
| Line 140 struct pfil_head inet6_pfil_hook; |
|
| struct ip6stat ip6stat; |
struct ip6stat ip6stat; |
| |
|
| static void ip6_init2 __P((void *)); |
static void ip6_init2 __P((void *)); |
| |
static struct m_tag *ip6_setdstifaddr __P((struct mbuf *, struct in6_ifaddr *)); |
| |
|
| static int ip6_hopopts_input __P((u_int32_t *, u_int32_t *, struct mbuf **, int *)); |
static int ip6_hopopts_input __P((u_int32_t *, u_int32_t *, struct mbuf **, int *)); |
| static struct mbuf *ip6_pullexthdr __P((struct mbuf *, size_t, int)); |
static struct mbuf *ip6_pullexthdr __P((struct mbuf *, size_t, int)); |
|
|
| pr->pr_protocol && pr->pr_protocol != IPPROTO_RAW) |
pr->pr_protocol && pr->pr_protocol != IPPROTO_RAW) |
| ip6_protox[pr->pr_protocol] = pr - inet6sw; |
ip6_protox[pr->pr_protocol] = pr - inet6sw; |
| ip6intrq.ifq_maxlen = ip6qmaxlen; |
ip6intrq.ifq_maxlen = ip6qmaxlen; |
| |
scope6_init(); |
| |
addrsel_policy_init(); |
| nd6_init(); |
nd6_init(); |
| frag6_init(); |
frag6_init(); |
| |
|
|
|
| #endif |
#endif |
| |
|
| /* |
/* |
| |
* make sure we don't have onion peering information into m_tag. |
| |
*/ |
| |
ip6_delaux(m); |
| |
|
| |
/* |
| * mbuf statistics |
* mbuf statistics |
| */ |
*/ |
| if (m->m_flags & M_EXT) { |
if (m->m_flags & M_EXT) { |
|
|
| /* |
/* |
| * If the IPv6 header is not aligned, slurp it up into a new |
* If the IPv6 header is not aligned, slurp it up into a new |
| * mbuf with space for link headers, in the event we forward |
* mbuf with space for link headers, in the event we forward |
| * it. OTherwise, if it is aligned, make sure the entire base |
* it. Otherwise, if it is aligned, make sure the entire base |
| * IPv6 header is in the first mbuf of the chain. |
* IPv6 header is in the first mbuf of the chain. |
| */ |
*/ |
| if (IP6_HDR_ALIGNED_P(mtod(m, caddr_t)) == 0) { |
if (IP6_HDR_ALIGNED_P(mtod(m, caddr_t)) == 0) { |
|
|
| } |
} |
| #endif |
#endif |
| |
|
| if (IN6_IS_ADDR_LOOPBACK(&ip6->ip6_src) || |
/* |
| IN6_IS_ADDR_LOOPBACK(&ip6->ip6_dst)) { |
* Disambiguate address scope zones (if there is ambiguity). |
| if (m->m_pkthdr.rcvif->if_flags & IFF_LOOPBACK) { |
* We first make sure that the original source or destination address |
| ours = 1; |
* is not in our internal form for scoped addresses. Such addresses |
| deliverifp = m->m_pkthdr.rcvif; |
* are not necessarily invalid spec-wise, but we cannot accept them due |
| goto hbhcheck; |
* to the usage conflict. |
| } else { |
* in6_setscope() then also checks and rejects the cases where src or |
| ip6stat.ip6s_badscope++; |
* dst are the loopback address and the receiving interface |
| in6_ifstat_inc(m->m_pkthdr.rcvif, ifs6_in_addrerr); |
* is not loopback. |
| goto bad; |
*/ |
| } |
if (in6_clearscope(&ip6->ip6_src) || in6_clearscope(&ip6->ip6_dst)) { |
| } |
ip6stat.ip6s_badscope++; /* XXX */ |
| |
goto bad; |
| /* drop packets if interface ID portion is already filled */ |
|
| if ((m->m_pkthdr.rcvif->if_flags & IFF_LOOPBACK) == 0) { |
|
| if (IN6_IS_SCOPE_LINKLOCAL(&ip6->ip6_src) && |
|
| ip6->ip6_src.s6_addr16[1]) { |
|
| ip6stat.ip6s_badscope++; |
|
| goto bad; |
|
| } |
|
| if (IN6_IS_SCOPE_LINKLOCAL(&ip6->ip6_dst) && |
|
| ip6->ip6_dst.s6_addr16[1]) { |
|
| ip6stat.ip6s_badscope++; |
|
| goto bad; |
|
| } |
|
| } |
} |
| |
if (in6_setscope(&ip6->ip6_src, m->m_pkthdr.rcvif, NULL) || |
| if (IN6_IS_SCOPE_LINKLOCAL(&ip6->ip6_src)) |
in6_setscope(&ip6->ip6_dst, m->m_pkthdr.rcvif, NULL)) { |
| ip6->ip6_src.s6_addr16[1] |
ip6stat.ip6s_badscope++; |
| = htons(m->m_pkthdr.rcvif->if_index); |
goto bad; |
| if (IN6_IS_SCOPE_LINKLOCAL(&ip6->ip6_dst)) |
|
| ip6->ip6_dst.s6_addr16[1] |
|
| = htons(m->m_pkthdr.rcvif->if_index); |
|
| |
|
| /* |
|
| * We use rt->rt_ifp to determine if the address is ours or not. |
|
| * If rt_ifp is lo0, the address is ours. |
|
| * 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; |
|
| } |
} |
| |
|
| /* |
/* |
|
|
| |
|
| hbhcheck: |
hbhcheck: |
| /* |
/* |
| |
* record address information into m_tag, if we don't have one yet. |
| |
* note that we are unable to record it, if the address is not listed |
| |
* as our interface address (e.g. multicast addresses, addresses |
| |
* within FAITH prefixes and such). |
| |
*/ |
| |
if (deliverifp && !ip6_getdstifaddr(m)) { |
| |
struct in6_ifaddr *ia6; |
| |
|
| |
ia6 = in6_ifawithifp(deliverifp, &ip6->ip6_dst); |
| |
if (ia6) { |
| |
if (!ip6_setdstifaddr(m, ia6)) { |
| |
/* |
| |
* XXX maybe we should drop the packet here, |
| |
* as we could not provide enough information |
| |
* to the upper layers. |
| |
*/ |
| |
} |
| |
} |
| |
} |
| |
|
| |
/* |
| * Process Hop-by-Hop options header if it's contained. |
* Process Hop-by-Hop options header if it's contained. |
| * m may be modified in ip6_hopopts_input(). |
* m may be modified in ip6_hopopts_input(). |
| * If a JumboPayload option is included, plen will also be modified. |
* If a JumboPayload option is included, plen will also be modified. |
|
|
| } |
} |
| |
|
| /* |
/* |
| |
* set/grab in6_ifaddr correspond to IPv6 destination address. |
| |
*/ |
| |
static struct m_tag * |
| |
ip6_setdstifaddr(m, ia6) |
| |
struct mbuf *m; |
| |
struct in6_ifaddr *ia6; |
| |
{ |
| |
struct m_tag *mtag; |
| |
|
| |
mtag = ip6_addaux(m); |
| |
if (mtag) |
| |
((struct ip6aux *)(mtag + 1))->ip6a_dstia6 = ia6; |
| |
return mtag; /* NULL if failed to set */ |
| |
} |
| |
|
| |
struct in6_ifaddr * |
| |
ip6_getdstifaddr(m) |
| |
struct mbuf *m; |
| |
{ |
| |
struct m_tag *mtag; |
| |
|
| |
mtag = ip6_findaux(m); |
| |
if (mtag) |
| |
return ((struct ip6aux *)(mtag + 1))->ip6a_dstia6; |
| |
else |
| |
return NULL; |
| |
} |
| |
|
| |
/* |
| * Hop-by-Hop options header processing. If a valid jumbo payload option is |
* Hop-by-Hop options header processing. If a valid jumbo payload option is |
| * included, the real payload length will be stored in plenp. |
* included, the real payload length will be stored in plenp. |
| */ |
*/ |
| Line 1025 ip6_savecontrol(in6p, mp, ip6, m) |
|
| Line 1047 ip6_savecontrol(in6p, mp, ip6, m) |
|
| if ((in6p->in6p_flags & IN6P_PKTINFO) != 0) { |
if ((in6p->in6p_flags & IN6P_PKTINFO) != 0) { |
| struct in6_pktinfo pi6; |
struct in6_pktinfo pi6; |
| bcopy(&ip6->ip6_dst, &pi6.ipi6_addr, sizeof(struct in6_addr)); |
bcopy(&ip6->ip6_dst, &pi6.ipi6_addr, sizeof(struct in6_addr)); |
| if (IN6_IS_SCOPE_LINKLOCAL(&pi6.ipi6_addr)) |
in6_clearscope(&pi6.ipi6_addr); /* XXX */ |
| pi6.ipi6_addr.s6_addr16[1] = 0; |
|
| pi6.ipi6_ifindex = (m && m->m_pkthdr.rcvif) |
pi6.ipi6_ifindex = (m && m->m_pkthdr.rcvif) |
| ? m->m_pkthdr.rcvif->if_index |
? m->m_pkthdr.rcvif->if_index |
| : 0; |
: 0; |
| Line 1405 ip6_lasthdr(m, off, proto, nxtp) |
|
| Line 1426 ip6_lasthdr(m, off, proto, nxtp) |
|
| } |
} |
| } |
} |
| |
|
| |
struct m_tag * |
| |
ip6_addaux(m) |
| |
struct mbuf *m; |
| |
{ |
| |
struct m_tag *mtag; |
| |
|
| |
mtag = m_tag_find(m, PACKET_TAG_INET6, NULL); |
| |
if (!mtag) { |
| |
mtag = m_tag_get(PACKET_TAG_INET6, sizeof(struct ip6aux), |
| |
M_NOWAIT); |
| |
if (mtag) { |
| |
m_tag_prepend(m, mtag); |
| |
bzero(mtag + 1, sizeof(struct ip6aux)); |
| |
} |
| |
} |
| |
return mtag; |
| |
} |
| |
|
| |
struct m_tag * |
| |
ip6_findaux(m) |
| |
struct mbuf *m; |
| |
{ |
| |
struct m_tag *mtag; |
| |
|
| |
mtag = m_tag_find(m, PACKET_TAG_INET6, NULL); |
| |
return mtag; |
| |
} |
| |
|
| |
void |
| |
ip6_delaux(m) |
| |
struct mbuf *m; |
| |
{ |
| |
struct m_tag *mtag; |
| |
|
| |
mtag = m_tag_find(m, PACKET_TAG_INET6, NULL); |
| |
if (mtag) |
| |
m_tag_delete(m, mtag); |
| |
} |
| |
|
| /* |
/* |
| * System control for IP6 |
* System control for IP6 |
| */ |
*/ |
| Line 1648 SYSCTL_SETUP(sysctl_net_inet6_ip6_setup, |
|
| Line 1708 SYSCTL_SETUP(sysctl_net_inet6_ip6_setup, |
|
| NULL, 0, &ip6stat, sizeof(ip6stat), |
NULL, 0, &ip6stat, sizeof(ip6stat), |
| CTL_NET, PF_INET6, IPPROTO_IPV6, |
CTL_NET, PF_INET6, IPPROTO_IPV6, |
| IPV6CTL_STATS, CTL_EOL); |
IPV6CTL_STATS, CTL_EOL); |
| |
sysctl_createv(clog, 0, NULL, NULL, |
| |
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
| |
CTLTYPE_INT, "use_defaultzone", |
| |
SYSCTL_DESCR("Whether to use the default scope zones"), |
| |
NULL, 0, &ip6_use_defzone, 0, |
| |
CTL_NET, PF_INET6, IPPROTO_IPV6, |
| |
IPV6CTL_USE_DEFAULTZONE, CTL_EOL); |
| } |
} |