| version 1.1.2.3, 1999/11/30 13:35:53 |
version 1.2, 1999/07/01 08:12:55 |
|
|
| #endif |
#endif |
| #if (defined(__FreeBSD__) && __FreeBSD__ >= 3) || defined(__NetBSD__) |
#if (defined(__FreeBSD__) && __FreeBSD__ >= 3) || defined(__NetBSD__) |
| #include "opt_inet.h" |
#include "opt_inet.h" |
| #ifdef __NetBSD__ /*XXX*/ |
|
| #include "opt_ipsec.h" |
|
| #endif |
|
| #endif |
#endif |
| |
|
| #include <sys/param.h> |
#include <sys/param.h> |
|
|
| #include <sys/time.h> |
#include <sys/time.h> |
| #include <sys/kernel.h> |
#include <sys/kernel.h> |
| #include <sys/syslog.h> |
#include <sys/syslog.h> |
| #if !defined(__bsdi__) && !(defined(__FreeBSD__) && __FreeBSD__ < 3) |
#ifdef __NetBSD__ |
| #include <sys/proc.h> |
#include <sys/proc.h> |
| #endif |
#endif |
| |
|
|
|
| #include <net/netisr.h> |
#include <net/netisr.h> |
| |
|
| #include <netinet/in.h> |
#include <netinet/in.h> |
| #include <netinet/in_systm.h> |
|
| #ifdef INET |
|
| #include <netinet/ip.h> |
|
| #include <netinet/ip_icmp.h> |
|
| #endif /*INET*/ |
|
| #if (defined(__FreeBSD__) && __FreeBSD__ >= 3) || defined(__OpenBSD__) || (defined(__bsdi__) && _BSDI_VERSION >= 199802) |
|
| #include <netinet/in_pcb.h> |
|
| #endif |
|
| #include <netinet6/in6_var.h> |
#include <netinet6/in6_var.h> |
| |
#include <netinet/in_systm.h> |
| #include <netinet6/ip6.h> |
#include <netinet6/ip6.h> |
| #if !((defined(__FreeBSD__) && __FreeBSD__ >= 3) || defined(__OpenBSD__) || (defined(__bsdi__) && _BSDI_VERSION >= 199802)) |
#if !defined(__FreeBSD__) || __FreeBSD__ < 3 |
| #include <netinet6/in6_pcb.h> |
#include <netinet6/in6_pcb.h> |
| |
#else |
| |
#include <netinet/in_pcb.h> |
| #endif |
#endif |
| #include <netinet6/ip6_var.h> |
#include <netinet6/ip6_var.h> |
| #include <netinet6/icmp6.h> |
#include <netinet6/icmp6.h> |
| #include <netinet6/in6_ifattach.h> |
#include <netinet6/in6_ifattach.h> |
| #include <netinet6/nd6.h> |
#include <netinet6/nd6.h> |
| #include <netinet6/in6_prefix.h> |
|
| |
|
| #ifdef IPV6FIREWALL |
#ifdef INET |
| #include <netinet6/ip6_fw.h> |
#include <netinet/ip.h> |
| #endif |
#include <netinet/ip_icmp.h> |
| |
#endif /*INET*/ |
| #ifdef ALTQ |
|
| #include <netinet/altq_cdnr.h> |
|
| #endif |
|
| |
|
| #include <netinet6/ip6protosw.h> |
#include <netinet6/ip6protosw.h> |
| |
|
| /* we need it for NLOOP. */ |
/* we need it for NLOOP. */ |
| #ifndef __bsdi__ |
|
| #include "loop.h" |
#include "loop.h" |
| #endif |
|
| #include "faith.h" |
#include "faith.h" |
| |
|
| #include "gif.h" |
#include "gif.h" |
| #include "bpfilter.h" |
#include "bpfilter.h" |
| |
|
| #include <net/net_osdep.h> |
|
| |
|
| #ifdef __OpenBSD__ /*KAME IPSEC*/ |
|
| #undef IPSEC |
|
| #endif |
|
| |
|
| extern struct domain inet6domain; |
extern struct domain inet6domain; |
| extern struct ip6protosw inet6sw[]; |
extern struct ip6protosw inet6sw[]; |
| #if (defined(__bsdi__) && _BSDI_VERSION < 199802) || defined(__OpenBSD__) |
#ifdef __bsdi__ |
| extern struct ifnet loif; |
extern struct ifnet loif; |
| #endif |
#endif |
| #if defined(__bsdi__) && _BSDI_VERSION >= 199802 |
|
| extern struct ifnet *loifp; |
|
| #endif |
|
| |
|
| u_char ip6_protox[IPPROTO_MAX]; |
u_char ip6_protox[IPPROTO_MAX]; |
| static int ip6qmaxlen = IFQ_MAXLEN; |
static int ip6qmaxlen = IFQ_MAXLEN; |
| Line 155 struct ifqueue ip6intrq; |
|
| Line 132 struct ifqueue ip6intrq; |
|
| |
|
| #ifdef __NetBSD__ |
#ifdef __NetBSD__ |
| extern struct ifnet loif[NLOOP]; |
extern struct ifnet loif[NLOOP]; |
| #endif |
|
| int ip6_forward_srcrt; /* XXX */ |
int ip6_forward_srcrt; /* XXX */ |
| int ip6_sourcecheck; /* XXX */ |
int ip6_sourcecheck; /* XXX */ |
| int ip6_sourcecheck_interval; /* XXX */ |
int ip6_sourcecheck_interval; /* XXX */ |
| |
|
| #ifdef IPV6FIREWALL |
|
| /* firewall hooks */ |
|
| ip6_fw_chk_t *ip6_fw_chk_ptr; |
|
| ip6_fw_ctl_t *ip6_fw_ctl_ptr; |
|
| #endif |
#endif |
| |
|
| struct ip6stat ip6stat; |
struct ip6stat ip6stat; |
| |
|
| static void ip6_init2 __P((void *)); |
static void ip6_init2 __P((void *)); |
| |
|
| static int ip6_hopopts_input __P((u_int32_t *, u_int32_t *, struct mbuf **, int *)); |
static int ip6_hopopts_input __P((u_int32_t *, long *, struct mbuf **, int *)); |
| |
|
| #if defined(PTR) |
|
| extern int ip6_protocol_tr; |
|
| |
|
| int ptr_in6 __P((struct mbuf *, struct mbuf **)); |
|
| extern void ip_forward __P((struct mbuf *, int)); |
|
| #endif |
|
| |
|
| /* |
/* |
| * IP6 initialization: fill in IP6 protocol switch table. |
* IP6 initialization: fill in IP6 protocol switch table. |
|
|
| ip6intrq.ifq_maxlen = ip6qmaxlen; |
ip6intrq.ifq_maxlen = ip6qmaxlen; |
| nd6_init(); |
nd6_init(); |
| frag6_init(); |
frag6_init(); |
| #ifdef IPV6FIREWALL |
|
| ip6_fw_init(); |
|
| #endif |
|
| /* |
/* |
| * in many cases, random() here does NOT return random number |
* in many cases, random() here does NOT return random number |
| * as initialization during bootstrap time occur in fixed order. |
* as initialization during bootstrap time occur in fixed order. |
| */ |
*/ |
| microtime(&tv); |
microtime(&tv); |
| ip6_flow_seq = random() ^ tv.tv_usec; |
ip6_flow_seq = random() ^ tv.tv_usec; |
| |
in6_iflladdr = malloc(i, M_IFADDR, M_WAITOK); |
| |
bzero(in6_iflladdr, i); |
| |
|
| #ifndef __FreeBSD__ |
|
| ip6_init2((void *)0); |
ip6_init2((void *)0); |
| #endif |
|
| } |
} |
| |
|
| static void |
static void |
| ip6_init2(dummy) |
ip6_init2(dummy) |
| void *dummy; |
void *dummy; |
| { |
{ |
| #if !(defined(__bsdi__) || defined(__OpenBSD__)) |
|
| int i; |
int i; |
| #endif |
|
| int ret; |
|
| #if (defined(__bsdi__) && _BSDI_VERSION < 199802) || defined(__OpenBSD__) |
|
| struct ifnet *loifp = &loif; |
|
| #endif |
|
| |
|
| /* get EUI64 from somewhere */ |
|
| ret = in6_ifattach_getifid(NULL); |
|
| |
|
| /* |
/* |
| * to route local address of p2p link to loopback, |
* to route local address of p2p link to loopback, |
| * assign loopback address first. |
* assign loopback address first. |
| */ |
*/ |
| #if defined(__bsdi__) || defined(__OpenBSD__) |
|
| in6_ifattach(loifp, IN6_IFT_LOOP, NULL, 0); |
|
| #else |
|
| for (i = 0; i < NLOOP; i++) |
for (i = 0; i < NLOOP; i++) |
| in6_ifattach(&loif[i], IN6_IFT_LOOP, NULL, 0); |
in6_ifattach(&loif[i], IN6_IFT_LOOP, NULL, 0); |
| #endif |
|
| |
|
| /* attach pseudo interfaces */ |
/* get EUI64 from somewhere, attach pseudo interfaces */ |
| if (ret == 0) |
if (in6_ifattach_getifid(NULL) == 0) |
| in6_ifattach_p2p(); |
in6_ifattach_p2p(); |
| |
|
| /* nd6_timer_init */ |
/* nd6_timer_init */ |
| timeout(nd6_timer, (caddr_t)0, hz); |
timeout(nd6_timer, (caddr_t)0, hz); |
| /* router renumbering prefix list maintenance */ |
|
| timeout(in6_rr_timer, (caddr_t)0, hz); |
|
| } |
} |
| |
|
| #ifdef __FreeBSD__ |
#ifdef __FreeBSD__ |
|
|
| ip6_input(m) |
ip6_input(m) |
| struct mbuf *m; |
struct mbuf *m; |
| { |
{ |
| struct ip6_hdr *ip6; |
register struct ip6_hdr *ip6; |
| int off = sizeof(struct ip6_hdr), nest; |
int off = sizeof(struct ip6_hdr), nest; |
| u_int32_t plen; |
u_int32_t plen; |
| u_int32_t rtalert = ~0; |
long rtalert = -1; |
| int nxt, ours = 0; |
int nxt, ours = 0; |
| struct ifnet *deliverifp = NULL; |
|
| #if (defined(__bsdi__) && _BSDI_VERSION < 199802) || defined(__OpenBSD__) |
|
| struct ifnet *loifp = &loif; |
|
| #endif |
|
| |
|
| #ifdef IPSEC |
#ifdef IPSEC |
| /* |
/* |
|
|
| m->m_flags &= ~M_AUTHIPDGM; |
m->m_flags &= ~M_AUTHIPDGM; |
| } |
} |
| #endif |
#endif |
| |
|
| /* |
/* |
| * mbuf statistics by kazu |
* mbuf statistics by kazu |
| */ |
*/ |
|
|
| ip6stat.ip6s_mext1++; |
ip6stat.ip6s_mext1++; |
| } else { |
} else { |
| if (m->m_next) { |
if (m->m_next) { |
| if (m->m_flags & M_LOOP) { |
if (m->m_flags & M_LOOP) |
| #if defined(__bsdi__) || defined(__OpenBSD__) |
|
| ip6stat.ip6s_m2m[loifp->if_index]++; /*XXX*/ |
|
| #else |
|
| ip6stat.ip6s_m2m[loif[0].if_index]++; /*XXX*/ |
ip6stat.ip6s_m2m[loif[0].if_index]++; /*XXX*/ |
| #endif |
|
| } |
|
| else if (m->m_pkthdr.rcvif->if_index <= 31) |
else if (m->m_pkthdr.rcvif->if_index <= 31) |
| ip6stat.ip6s_m2m[m->m_pkthdr.rcvif->if_index]++; |
ip6stat.ip6s_m2m[m->m_pkthdr.rcvif->if_index]++; |
| else |
else |
|
|
| ip6stat.ip6s_m1++; |
ip6stat.ip6s_m1++; |
| } |
} |
| |
|
| in6_ifstat_inc(m->m_pkthdr.rcvif, ifs6_in_receive); |
|
| ip6stat.ip6s_total++; |
|
| |
|
| #ifndef PULLDOWN_TEST |
|
| /* XXX is the line really necessary? */ |
|
| IP6_EXTHDR_CHECK(m, 0, sizeof(struct ip6_hdr), /*nothing*/); |
IP6_EXTHDR_CHECK(m, 0, sizeof(struct ip6_hdr), /*nothing*/); |
| #endif |
|
| |
|
| if (m->m_len < sizeof(struct ip6_hdr)) { |
ip6stat.ip6s_total++; |
| struct ifnet *inifp; |
|
| inifp = m->m_pkthdr.rcvif; |
if (m->m_len < sizeof(struct ip6_hdr) && |
| if ((m = m_pullup(m, sizeof(struct ip6_hdr))) == 0) { |
(m = m_pullup(m, sizeof(struct ip6_hdr))) == 0) { |
| ip6stat.ip6s_toosmall++; |
ip6stat.ip6s_toosmall++; |
| in6_ifstat_inc(inifp, ifs6_in_hdrerr); |
return; |
| return; |
|
| } |
|
| } |
} |
| |
|
| ip6 = mtod(m, struct ip6_hdr *); |
ip6 = mtod(m, struct ip6_hdr *); |
| |
|
| if ((ip6->ip6_vfc & IPV6_VERSION_MASK) != IPV6_VERSION) { |
if ((ip6->ip6_vfc & IPV6_VERSION_MASK) != IPV6_VERSION) { |
| ip6stat.ip6s_badvers++; |
ip6stat.ip6s_badvers++; |
| in6_ifstat_inc(m->m_pkthdr.rcvif, ifs6_in_hdrerr); |
|
| goto bad; |
goto bad; |
| } |
} |
| |
|
| ip6stat.ip6s_nxthist[ip6->ip6_nxt]++; |
ip6stat.ip6s_nxthist[ip6->ip6_nxt]++; |
| |
|
| #ifdef IPV6FIREWALL |
|
| /* |
|
| * Check with the firewall... |
|
| */ |
|
| if (ip6_fw_chk_ptr) { |
|
| u_short port = 0; |
|
| /* If ipfw says divert, we have to just drop packet */ |
|
| /* use port as a dummy argument */ |
|
| if ((*ip6_fw_chk_ptr)(&ip6, NULL, &port, &m)) { |
|
| m_freem(m); |
|
| m = NULL; |
|
| } |
|
| if (!m) |
|
| return; |
|
| } |
|
| #endif |
|
| |
|
| #ifdef ALTQ |
|
| if (altq_input != NULL && (*altq_input)(m, AF_INET6) == 0) { |
|
| /* packet is dropped by traffic conditioner */ |
|
| return; |
|
| } |
|
| #endif |
|
| |
|
| /* |
/* |
| * Scope check |
* Scope check |
| */ |
*/ |
| if (IN6_IS_ADDR_MULTICAST(&ip6->ip6_src) || |
if (IN6_IS_ADDR_MULTICAST(&ip6->ip6_src) || |
| IN6_IS_ADDR_UNSPECIFIED(&ip6->ip6_dst)) { |
IN6_IS_ADDR_UNSPECIFIED(&ip6->ip6_dst)) { |
| ip6stat.ip6s_badscope++; |
ip6stat.ip6s_badscope++; |
| in6_ifstat_inc(m->m_pkthdr.rcvif, ifs6_in_addrerr); |
|
| goto bad; |
goto bad; |
| } |
} |
| if (IN6_IS_ADDR_LOOPBACK(&ip6->ip6_src) || |
if (IN6_IS_ADDR_LOOPBACK(&ip6->ip6_src) || |
| IN6_IS_ADDR_LOOPBACK(&ip6->ip6_dst)) { |
IN6_IS_ADDR_LOOPBACK(&ip6->ip6_dst)) { |
| if (m->m_pkthdr.rcvif->if_flags & IFF_LOOPBACK) { |
if (m->m_pkthdr.rcvif->if_flags & IFF_LOOPBACK) { |
| ours = 1; |
ours = 1; |
| deliverifp = m->m_pkthdr.rcvif; |
|
| goto hbhcheck; |
goto hbhcheck; |
| } else { |
} else { |
| ip6stat.ip6s_badscope++; |
ip6stat.ip6s_badscope++; |
| in6_ifstat_inc(m->m_pkthdr.rcvif, ifs6_in_addrerr); |
|
| goto bad; |
goto bad; |
| } |
} |
| } |
} |
|
|
| if (m->m_pkthdr.rcvif->if_flags & IFF_LOOPBACK) { |
if (m->m_pkthdr.rcvif->if_flags & IFF_LOOPBACK) { |
| if (IN6_IS_ADDR_LINKLOCAL(&ip6->ip6_dst)) { |
if (IN6_IS_ADDR_LINKLOCAL(&ip6->ip6_dst)) { |
| ours = 1; |
ours = 1; |
| deliverifp = m->m_pkthdr.rcvif; |
|
| goto hbhcheck; |
goto hbhcheck; |
| } |
} |
| } else { |
} else { |
|
|
| = htons(m->m_pkthdr.rcvif->if_index); |
= htons(m->m_pkthdr.rcvif->if_index); |
| } |
} |
| |
|
| #if defined(PTR) |
|
| /* |
|
| * |
|
| */ |
|
| if (ip6_protocol_tr) |
|
| { |
|
| struct mbuf *m1 = NULL; |
|
| |
|
| switch (ptr_in6(m, &m1)) |
|
| { |
|
| case IPPROTO_IP: goto mcastcheck; |
|
| case IPPROTO_IPV4: ip_forward(m1, 0); break; |
|
| case IPPROTO_IPV6: ip6_forward(m1, 0); break; |
|
| case IPPROTO_MAX: /* discard this packet */ |
|
| default: |
|
| } |
|
| |
|
| if (m != m1) |
|
| m_freem(m); |
|
| |
|
| return; |
|
| } |
|
| |
|
| mcastcheck: |
|
| #endif |
|
| |
|
| /* |
/* |
| * Multicast check |
* Multicast check |
| */ |
*/ |
| if (IN6_IS_ADDR_MULTICAST(&ip6->ip6_dst)) { |
if (IN6_IS_ADDR_MULTICAST(&ip6->ip6_dst)) { |
| struct in6_multi *in6m = 0; |
struct in6_multi *in6m = 0; |
| |
|
| in6_ifstat_inc(m->m_pkthdr.rcvif, ifs6_in_mcast); |
|
| /* |
/* |
| * See if we belong to the destination multicast group on the |
* See if we belong to the destination multicast group on the |
| * arrival interface. |
* arrival interface. |
|
|
| else if (!ip6_mrouter) { |
else if (!ip6_mrouter) { |
| ip6stat.ip6s_notmember++; |
ip6stat.ip6s_notmember++; |
| ip6stat.ip6s_cantforward++; |
ip6stat.ip6s_cantforward++; |
| in6_ifstat_inc(m->m_pkthdr.rcvif, ifs6_in_discard); |
|
| goto bad; |
goto bad; |
| } |
} |
| deliverifp = m->m_pkthdr.rcvif; |
|
| goto hbhcheck; |
goto hbhcheck; |
| } |
} |
| |
|
|
|
| IN6_ARE_ADDR_EQUAL(&ip6->ip6_dst, |
IN6_ARE_ADDR_EQUAL(&ip6->ip6_dst, |
| &rt6_key(ip6_forward_rt.ro_rt)->sin6_addr) && |
&rt6_key(ip6_forward_rt.ro_rt)->sin6_addr) && |
| #endif |
#endif |
| ip6_forward_rt.ro_rt->rt_ifp->if_type == IFT_LOOP) { |
#ifdef __bsdi__ |
| |
ip6_foward.rt.ro_rt->rt_ifp == &loif |
| |
#else |
| |
ip6_forward_rt.ro_rt->rt_ifp == &loif[0] |
| |
#endif |
| |
) { |
| struct in6_ifaddr *ia6 = |
struct in6_ifaddr *ia6 = |
| (struct in6_ifaddr *)ip6_forward_rt.ro_rt->rt_ifa; |
(struct in6_ifaddr *)ip6_forward_rt.ro_rt->rt_ifa; |
| /* packet to tentative address must not be received */ |
/* packet to tentative address must not be received */ |
|
|
| if (!(ia6->ia6_flags & IN6_IFF_NOTREADY)) { |
if (!(ia6->ia6_flags & IN6_IFF_NOTREADY)) { |
| /* this interface is ready */ |
/* this interface is ready */ |
| ours = 1; |
ours = 1; |
| deliverifp = ia6->ia_ifp; /* correct? */ |
|
| goto hbhcheck; |
goto hbhcheck; |
| } else { |
} else { |
| /* this interface is not ready, fall through */ |
/* this interface is not ready, fall through */ |
|
|
| && ip6_forward_rt.ro_rt->rt_ifp->if_type == IFT_FAITH) { |
&& ip6_forward_rt.ro_rt->rt_ifp->if_type == IFT_FAITH) { |
| /* XXX do we need more sanity checks? */ |
/* XXX do we need more sanity checks? */ |
| ours = 1; |
ours = 1; |
| deliverifp = ip6_forward_rt.ro_rt->rt_ifp; /*faith*/ |
|
| goto hbhcheck; |
goto hbhcheck; |
| } |
} |
| } |
} |
| #endif |
#endif |
| |
|
| #ifdef __OpenBSD__ |
|
| { |
|
| /* |
|
| * Last resort: check in6_ifaddr for incoming interface. |
|
| * The code is here until I update the "goto ours hack" code above |
|
| * working right. |
|
| */ |
|
| struct ifaddr *ifa; |
|
| for (ifa = m->m_pkthdr.rcvif->if_addrlist.tqh_first; |
|
| ifa; |
|
| ifa = ifa->ifa_list.tqe_next) { |
|
| if (ifa->ifa_addr == NULL) |
|
| continue; /* just for safety */ |
|
| if (ifa->ifa_addr->sa_family != AF_INET6) |
|
| continue; |
|
| if (IN6_ARE_ADDR_EQUAL(IFA_IN6(ifa), &ip6->ip6_dst)) { |
|
| ours = 1; |
|
| deliverifp = ifa->ifa_ifp; |
|
| goto hbhcheck; |
|
| } |
|
| } |
|
| } |
|
| #endif |
|
| /* |
/* |
| * Now there is no reason to process the packet if it's not our own |
* Now there is no reason to process the packet if it's not our own |
| * and we're not a router. |
* and we're not a router. |
| */ |
*/ |
| if (!ip6_forwarding) { |
if (!ip6_forwarding) { |
| ip6stat.ip6s_cantforward++; |
ip6stat.ip6s_cantforward++; |
| in6_ifstat_inc(m->m_pkthdr.rcvif, ifs6_in_discard); |
|
| goto bad; |
goto bad; |
| } |
} |
| |
|
|
|
| */ |
*/ |
| plen = (u_int32_t)ntohs(ip6->ip6_plen); |
plen = (u_int32_t)ntohs(ip6->ip6_plen); |
| if (ip6->ip6_nxt == IPPROTO_HOPOPTS) { |
if (ip6->ip6_nxt == IPPROTO_HOPOPTS) { |
| struct ip6_hbh *hbh; |
if (ip6_hopopts_input(&plen, &rtalert, &m, &off)) |
| |
|
| if (ip6_hopopts_input(&plen, &rtalert, &m, &off)) { |
|
| #if 0 /*touches NULL pointer*/ |
|
| in6_ifstat_inc(m->m_pkthdr.rcvif, ifs6_in_discard); |
|
| #endif |
|
| return; /* m have already been freed */ |
return; /* m have already been freed */ |
| } |
|
| /* adjust pointer */ |
/* adjust pointer */ |
| ip6 = mtod(m, struct ip6_hdr *); |
ip6 = mtod(m, struct ip6_hdr *); |
| #ifndef PULLDOWN_TEST |
nxt = ((struct ip6_hbh *)(ip6 + 1))->ip6h_nxt; |
| /* ip6_hopopts_input() ensures that mbuf is contiguous */ |
|
| hbh = (struct ip6_hbh *)(ip6 + 1); |
|
| #else |
|
| IP6_EXTHDR_GET(hbh, struct ip6_hbh *, m, sizeof(struct ip6_hdr), |
|
| sizeof(struct ip6_hbh)); |
|
| if (hbh == NULL) { |
|
| ip6stat.ip6s_tooshort++; |
|
| return; |
|
| } |
|
| #endif |
|
| nxt = hbh->ip6h_nxt; |
|
| |
|
| /* |
/* |
| * accept the packet if a router alert option is included |
* accept the packet if a router alert option is included |
| * and we act as an IPv6 router. |
* and we act as an IPv6 router. |
| */ |
*/ |
| if (rtalert != ~0 && ip6_forwarding) |
if (rtalert >= 0 && ip6_forwarding) |
| ours = 1; |
ours = 1; |
| } else |
} else |
| nxt = ip6->ip6_nxt; |
nxt = ip6->ip6_nxt; |
|
|
| */ |
*/ |
| if (m->m_pkthdr.len - sizeof(struct ip6_hdr) < plen) { |
if (m->m_pkthdr.len - sizeof(struct ip6_hdr) < plen) { |
| ip6stat.ip6s_tooshort++; |
ip6stat.ip6s_tooshort++; |
| in6_ifstat_inc(m->m_pkthdr.rcvif, ifs6_in_truncated); |
|
| goto bad; |
goto bad; |
| } |
} |
| if (m->m_pkthdr.len > sizeof(struct ip6_hdr) + plen) { |
if (m->m_pkthdr.len > sizeof(struct ip6_hdr) + plen) { |
|
|
| /* |
/* |
| * Tell launch routine the next header |
* Tell launch routine the next header |
| */ |
*/ |
| #if defined(__NetBSD__) && defined(IFA_STATS) |
|
| if (IFA_STATS && deliverifp != NULL) { |
|
| struct in6_ifaddr *ia6; |
|
| ip6 = mtod(m, struct ip6_hdr *); |
|
| ia6 = in6_ifawithifp(deliverifp, &ip6->ip6_dst); |
|
| if (ia6) |
|
| ia6->ia_ifa.ifa_data.ifad_inbytes += m->m_pkthdr.len; |
|
| } |
|
| #endif |
|
| ip6stat.ip6s_delivered++; |
ip6stat.ip6s_delivered++; |
| 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++; |
| goto bad; |
goto bad; |
| } |
} |
| |
|
| /* |
|
| * protection against faulty packet - there should be |
|
| * more sanity checks in header chain processing. |
|
| */ |
|
| if (m->m_pkthdr.len < off) { |
|
| ip6stat.ip6s_tooshort++; |
|
| in6_ifstat_inc(m->m_pkthdr.rcvif, ifs6_in_truncated); |
|
| goto bad; |
|
| } |
|
| |
|
| nxt = (*inet6sw[ip6_protox[nxt]].pr_input)(&m, &off, nxt); |
nxt = (*inet6sw[ip6_protox[nxt]].pr_input)(&m, &off, nxt); |
| } |
} |
| return; |
return; |
|
|
| static int |
static int |
| ip6_hopopts_input(plenp, rtalertp, mp, offp) |
ip6_hopopts_input(plenp, rtalertp, mp, offp) |
| u_int32_t *plenp; |
u_int32_t *plenp; |
| u_int32_t *rtalertp; /* XXX: should be stored more smart way */ |
long *rtalertp; /* XXX: should be stored more smart way */ |
| struct mbuf **mp; |
struct mbuf **mp; |
| int *offp; |
int *offp; |
| { |
{ |
| Line 724 ip6_hopopts_input(plenp, rtalertp, mp, o |
|
| Line 533 ip6_hopopts_input(plenp, rtalertp, mp, o |
|
| u_int8_t *opt; |
u_int8_t *opt; |
| |
|
| /* validation of the length of the header */ |
/* validation of the length of the header */ |
| #ifndef PULLDOWN_TEST |
|
| IP6_EXTHDR_CHECK(m, off, sizeof(*hbh), -1); |
IP6_EXTHDR_CHECK(m, off, sizeof(*hbh), -1); |
| hbh = (struct ip6_hbh *)(mtod(m, caddr_t) + off); |
hbh = (struct ip6_hbh *)(mtod(m, caddr_t) + off); |
| hbhlen = (hbh->ip6h_len + 1) << 3; |
hbhlen = (hbh->ip6h_len + 1) << 3; |
| |
|
| IP6_EXTHDR_CHECK(m, off, hbhlen, -1); |
IP6_EXTHDR_CHECK(m, off, hbhlen, -1); |
| hbh = (struct ip6_hbh *)(mtod(m, caddr_t) + off); |
hbh = (struct ip6_hbh *)(mtod(m, caddr_t) + off); |
| #else |
|
| IP6_EXTHDR_GET(hbh, struct ip6_hbh *, m, |
|
| sizeof(struct ip6_hdr), sizeof(struct ip6_hbh)); |
|
| if (hbh == NULL) { |
|
| ip6stat.ip6s_tooshort++; |
|
| return -1; |
|
| } |
|
| hbhlen = (hbh->ip6h_len + 1) << 3; |
|
| IP6_EXTHDR_GET(hbh, struct ip6_hbh *, m, sizeof(struct ip6_hdr), |
|
| hbhlen); |
|
| if (hbh == NULL) { |
|
| ip6stat.ip6s_tooshort++; |
|
| return -1; |
|
| } |
|
| #endif |
|
| off += hbhlen; |
off += hbhlen; |
| hbhlen -= sizeof(struct ip6_hbh); |
hbhlen -= sizeof(struct ip6_hbh); |
| opt = (u_int8_t *)hbh + sizeof(struct ip6_hbh); |
opt = (u_int8_t *)hbh + sizeof(struct ip6_hbh); |
| Line 770 ip6_process_hopopts(m, opthead, hbhlen, |
|
| Line 563 ip6_process_hopopts(m, opthead, hbhlen, |
|
| struct mbuf *m; |
struct mbuf *m; |
| u_int8_t *opthead; |
u_int8_t *opthead; |
| int hbhlen; |
int hbhlen; |
| u_int32_t *rtalertp; |
long *rtalertp; |
| u_int32_t *plenp; |
u_int32_t *plenp; |
| { |
{ |
| struct ip6_hdr *ip6; |
struct ip6_hdr *ip6; |
| Line 791 ip6_process_hopopts(m, opthead, hbhlen, |
|
| Line 584 ip6_process_hopopts(m, opthead, hbhlen, |
|
| optlen = *(opt + 1) + 2; |
optlen = *(opt + 1) + 2; |
| break; |
break; |
| case IP6OPT_RTALERT: |
case IP6OPT_RTALERT: |
| /* XXX may need check for alignment */ |
|
| if (hbhlen < IP6OPT_RTALERT_LEN) { |
if (hbhlen < IP6OPT_RTALERT_LEN) { |
| ip6stat.ip6s_toosmall++; |
ip6stat.ip6s_toosmall++; |
| goto bad; |
goto bad; |
| Line 805 ip6_process_hopopts(m, opthead, hbhlen, |
|
| Line 597 ip6_process_hopopts(m, opthead, hbhlen, |
|
| *rtalertp = ntohs(rtalert_val); |
*rtalertp = ntohs(rtalert_val); |
| break; |
break; |
| case IP6OPT_JUMBO: |
case IP6OPT_JUMBO: |
| /* XXX may need check for alignment */ |
|
| if (hbhlen < IP6OPT_JUMBO_LEN) { |
if (hbhlen < IP6OPT_JUMBO_LEN) { |
| ip6stat.ip6s_toosmall++; |
ip6stat.ip6s_toosmall++; |
| goto bad; |
goto bad; |
| Line 821 ip6_process_hopopts(m, opthead, hbhlen, |
|
| Line 612 ip6_process_hopopts(m, opthead, hbhlen, |
|
| * We can simply cast because of the alignment |
* We can simply cast because of the alignment |
| * requirement of the jumbo payload option. |
* requirement of the jumbo payload option. |
| */ |
*/ |
| #if 0 |
|
| *plenp = ntohl(*(u_int32_t *)(opt + 2)); |
*plenp = ntohl(*(u_int32_t *)(opt + 2)); |
| #else |
|
| bcopy(opt + 2, plenp, sizeof(*plenp)); |
|
| *plenp = htonl(*plenp); |
|
| #endif |
|
| if (*plenp <= IPV6_MAXPACKET) { |
if (*plenp <= IPV6_MAXPACKET) { |
| /* |
/* |
| * jumbo payload length must be larger |
* jumbo payload length must be larger |
| Line 919 ip6_unknown_opt(optp, m, off) |
|
| Line 705 ip6_unknown_opt(optp, m, off) |
|
| } |
} |
| |
|
| /* |
/* |
| * Create the "control" list for this pcb. |
* Create the "control" list for this pcb |
| * |
|
| * The routine will be called from upper layer handlers like tcp6_input(). |
|
| * Thus the routine assumes that the caller (tcp6_input) have already |
|
| * called IP6_EXTHDR_CHECK() and all the extension headers are located in the |
|
| * very first mbuf on the mbuf chain. |
|
| * We may want to add some infinite loop prevention or sanity checks for safety. |
|
| * (This applies only when you are using KAME mbuf chain restriction, i.e. |
|
| * you are using IP6_EXTHDR_CHECK() not m_pulldown()) |
|
| */ |
*/ |
| void |
void |
| ip6_savecontrol(in6p, mp, ip6, m) |
ip6_savecontrol(in6p, mp, ip6, m) |
| #if (defined(__FreeBSD__) && __FreeBSD__ >= 3) || defined(HAVE_NRL_INPCB) |
|
| register struct inpcb *in6p; |
|
| #else |
|
| register struct in6pcb *in6p; |
register struct in6pcb *in6p; |
| #endif |
|
| register struct mbuf **mp; |
register struct mbuf **mp; |
| register struct ip6_hdr *ip6; |
register struct ip6_hdr *ip6; |
| register struct mbuf *m; |
register struct mbuf *m; |
| { |
{ |
| #ifdef HAVE_NRL_INPCB |
#ifdef __NetBSD__ |
| # define in6p_flags inp_flags |
|
| #endif |
|
| #if defined(__NetBSD__) || (defined(__FreeBSD__) && __FreeBSD__ >= 3) |
|
| struct proc *p = curproc; /* XXX */ |
struct proc *p = curproc; /* XXX */ |
| #endif |
#endif |
| #ifdef __bsdi__ |
#ifdef __bsdi__ |
| # define sbcreatecontrol so_cmsg |
# define sbcreatecontrol so_cmsg |
| #endif |
#endif |
| int privileged; |
|
| |
|
| privileged = 0; |
|
| #if defined(__NetBSD__) || (defined(__FreeBSD__) && __FreeBSD__ >= 3) |
|
| if (p && !suser(p->p_ucred, &p->p_acflag)) |
|
| privileged++; |
|
| #else |
|
| #ifdef HAVE_NRL_INPCB |
|
| if ((in6p->inp_socket->so_state & SS_PRIV) != 0) |
|
| privileged++; |
|
| #else |
|
| if ((in6p->in6p_socket->so_state & SS_PRIV) != 0) |
|
| privileged++; |
|
| #endif |
|
| #endif |
|
| |
|
| #ifdef SO_TIMESTAMP |
|
| if (in6p->in6p_socket->so_options & SO_TIMESTAMP) { |
if (in6p->in6p_socket->so_options & SO_TIMESTAMP) { |
| struct timeval tv; |
struct timeval tv; |
| |
|
| Line 975 ip6_savecontrol(in6p, mp, ip6, m) |
|
| Line 730 ip6_savecontrol(in6p, mp, ip6, m) |
|
| if (*mp) |
if (*mp) |
| mp = &(*mp)->m_next; |
mp = &(*mp)->m_next; |
| } |
} |
| #endif |
|
| if (in6p->in6p_flags & IN6P_RECVDSTADDR) { |
if (in6p->in6p_flags & IN6P_RECVDSTADDR) { |
| *mp = sbcreatecontrol((caddr_t) &ip6->ip6_dst, |
*mp = sbcreatecontrol((caddr_t) &ip6->ip6_dst, |
| sizeof(struct in6_addr), IPV6_RECVDSTADDR, |
sizeof(struct in6_addr), IPV6_RECVDSTADDR, |
| Line 1023 ip6_savecontrol(in6p, mp, ip6, m) |
|
| Line 777 ip6_savecontrol(in6p, mp, ip6, m) |
|
| * be some hop-by-hop options which can be returned to normal user. |
* be some hop-by-hop options which can be returned to normal user. |
| * See RFC 2292 section 6. |
* See RFC 2292 section 6. |
| */ |
*/ |
| if ((in6p->in6p_flags & IN6P_HOPOPTS) && privileged) { |
if ((in6p->in6p_flags & IN6P_HOPOPTS) && |
| |
p && !suser(p->p_ucred, &p->p_acflag)) { |
| /* |
/* |
| * Check if a hop-by-hop options header is contatined in the |
* Check if a hop-by-hop options header is contatined in the |
| * received packet, and if so, store the options as ancillary |
* received packet, and if so, store the options as ancillary |
| Line 1033 ip6_savecontrol(in6p, mp, ip6, m) |
|
| Line 788 ip6_savecontrol(in6p, mp, ip6, m) |
|
| */ |
*/ |
| struct ip6_hdr *ip6 = mtod(m, struct ip6_hdr *); |
struct ip6_hdr *ip6 = mtod(m, struct ip6_hdr *); |
| if (ip6->ip6_nxt == IPPROTO_HOPOPTS) { |
if (ip6->ip6_nxt == IPPROTO_HOPOPTS) { |
| struct ip6_hbh *hbh; |
struct ip6_hbh *hbh = (struct ip6_hbh *)(ip6 + 1); |
| int hbhlen; |
|
| |
|
| #ifndef PULLDOWN_TEST |
|
| hbh = (struct ip6_hbh *)(ip6 + 1); |
|
| hbhlen = (hbh->ip6h_len + 1) << 3; |
|
| #else |
|
| IP6_EXTHDR_GET(hbh, struct ip6_hbh *, m, |
|
| sizeof(struct ip6_hdr), sizeof(struct ip6_hbh)); |
|
| if (hbh == NULL) { |
|
| ip6stat.ip6s_tooshort++; |
|
| return; |
|
| } |
|
| hbhlen = (hbh->ip6h_len + 1) << 3; |
|
| IP6_EXTHDR_GET(hbh, struct ip6_hbh *, m, |
|
| sizeof(struct ip6_hdr), hbhlen); |
|
| if (hbh == NULL) { |
|
| ip6stat.ip6s_tooshort++; |
|
| return; |
|
| } |
|
| #endif |
|
| |
|
| /* |
/* |
| * XXX: We copy whole the header even if a jumbo |
* XXX: We copy whole the header even if a jumbo |
| Line 1061 ip6_savecontrol(in6p, mp, ip6, m) |
|
| Line 796 ip6_savecontrol(in6p, mp, ip6, m) |
|
| * be removed before returning in the RFC 2292. |
* be removed before returning in the RFC 2292. |
| * But it's too painful operation... |
* But it's too painful operation... |
| */ |
*/ |
| *mp = sbcreatecontrol((caddr_t)hbh, hbhlen, |
*mp = sbcreatecontrol((caddr_t)hbh, |
| |
(hbh->ip6h_len + 1) << 3, |
| IPV6_HOPOPTS, IPPROTO_IPV6); |
IPV6_HOPOPTS, IPPROTO_IPV6); |
| if (*mp) |
if (*mp) |
| mp = &(*mp)->m_next; |
mp = &(*mp)->m_next; |
| Line 1081 ip6_savecontrol(in6p, mp, ip6, m) |
|
| Line 817 ip6_savecontrol(in6p, mp, ip6, m) |
|
| * the chain of ancillary data. |
* the chain of ancillary data. |
| */ |
*/ |
| while(1) { /* is explicit loop prevention necessary? */ |
while(1) { /* is explicit loop prevention necessary? */ |
| struct ip6_ext *ip6e; |
struct ip6_ext *ip6e = |
| int elen; |
(struct ip6_ext *)(mtod(m, caddr_t) + off); |
| |
|
| #ifndef PULLDOWN_TEST |
|
| ip6e = (struct ip6_ext *)(mtod(m, caddr_t) + off); |
|
| if (nxt == IPPROTO_AH) |
|
| elen = (ip6e->ip6e_len + 2) << 2; |
|
| else |
|
| elen = (ip6e->ip6e_len + 1) << 3; |
|
| #else |
|
| IP6_EXTHDR_GET(ip6e, struct ip6_ext *, m, off, |
|
| sizeof(struct ip6_ext)); |
|
| if (ip6e == NULL) { |
|
| ip6stat.ip6s_tooshort++; |
|
| return; |
|
| } |
|
| if (nxt == IPPROTO_AH) |
|
| elen = (ip6e->ip6e_len + 2) << 2; |
|
| else |
|
| elen = (ip6e->ip6e_len + 1) << 3; |
|
| IP6_EXTHDR_GET(ip6e, struct ip6_ext *, m, off, elen); |
|
| if (ip6e == NULL) { |
|
| ip6stat.ip6s_tooshort++; |
|
| return; |
|
| } |
|
| #endif |
|
| |
|
| switch(nxt) { |
switch(nxt) { |
| case IPPROTO_DSTOPTS: |
case IPPROTO_DSTOPTS: |
| Line 1118 ip6_savecontrol(in6p, mp, ip6, m) |
|
| Line 830 ip6_savecontrol(in6p, mp, ip6, m) |
|
| * the option. |
* the option. |
| * See the comments on IN6_HOPOPTS. |
* See the comments on IN6_HOPOPTS. |
| */ |
*/ |
| if (!privileged) |
if (!p || !suser(p->p_ucred, &p->p_acflag)) |
| break; |
break; |
| |
|
| *mp = sbcreatecontrol((caddr_t)ip6e, elen, |
*mp = sbcreatecontrol((caddr_t)ip6e, |
| |
(ip6e->ip6e_len + 1) << 3, |
| IPV6_DSTOPTS, |
IPV6_DSTOPTS, |
| IPPROTO_IPV6); |
IPPROTO_IPV6); |
| if (*mp) |
if (*mp) |
| Line 1132 ip6_savecontrol(in6p, mp, ip6, m) |
|
| Line 845 ip6_savecontrol(in6p, mp, ip6, m) |
|
| if (!in6p->in6p_flags & IN6P_RTHDR) |
if (!in6p->in6p_flags & IN6P_RTHDR) |
| break; |
break; |
| |
|
| *mp = sbcreatecontrol((caddr_t)ip6e, elen, |
*mp = sbcreatecontrol((caddr_t)ip6e, |
| |
(ip6e->ip6e_len + 1) << 3, |
| IPV6_RTHDR, |
IPV6_RTHDR, |
| IPPROTO_IPV6); |
IPPROTO_IPV6); |
| if (*mp) |
if (*mp) |
| Line 1155 ip6_savecontrol(in6p, mp, ip6, m) |
|
| Line 869 ip6_savecontrol(in6p, mp, ip6, m) |
|
| } |
} |
| |
|
| /* proceed with the next header. */ |
/* proceed with the next header. */ |
| off += elen; |
if (nxt == IPPROTO_AH) |
| |
off += (ip6e->ip6e_len + 2) << 2; |
| |
else |
| |
off += (ip6e->ip6e_len + 1) << 3; |
| nxt = ip6e->ip6e_nxt; |
nxt = ip6e->ip6e_nxt; |
| } |
} |
| loopend: |
loopend: |
| } |
} |
| if ((in6p->in6p_flags & IN6P_HOPOPTS) && privileged) { |
if ((in6p->in6p_flags & IN6P_HOPOPTS) |
| |
&& p && !suser(p->p_ucred, &p->p_acflag)) { |
| /* to be done */ |
/* to be done */ |
| } |
} |
| if ((in6p->in6p_flags & IN6P_DSTOPTS) && privileged) { |
if ((in6p->in6p_flags & IN6P_DSTOPTS) |
| |
&& p && !suser(p->p_ucred, &p->p_acflag)) { |
| /* to be done */ |
/* to be done */ |
| } |
} |
| /* IN6P_RTHDR - to be done */ |
/* IN6P_RTHDR - to be done */ |
| Line 1171 ip6_savecontrol(in6p, mp, ip6, m) |
|
| Line 890 ip6_savecontrol(in6p, mp, ip6, m) |
|
| #ifdef __bsdi__ |
#ifdef __bsdi__ |
| # undef sbcreatecontrol |
# undef sbcreatecontrol |
| #endif |
#endif |
| #ifdef __OpenBSD__ |
|
| # undef in6p_flags |
|
| #endif |
|
| } |
} |
| |
|
| /* |
/* |
| Line 1239 u_char inet6ctlerrmap[PRC_NCMDS] = { |
|
| Line 955 u_char inet6ctlerrmap[PRC_NCMDS] = { |
|
| ENOPROTOOPT |
ENOPROTOOPT |
| }; |
}; |
| |
|
| #if defined(__NetBSD__) || defined(__OpenBSD__) |
#ifdef __NetBSD__ |
| #include <vm/vm.h> |
#include <vm/vm.h> |
| #include <sys/sysctl.h> |
#include <sys/sysctl.h> |
| |
|
| Line 1293 ip6_sysctl(name, namelen, oldp, oldlenp, |
|
| Line 1009 ip6_sysctl(name, namelen, oldp, oldlenp, |
|
| &ip6_gif_hlim); |
&ip6_gif_hlim); |
| case IPV6CTL_KAME_VERSION: |
case IPV6CTL_KAME_VERSION: |
| return sysctl_rdstring(oldp, oldlenp, newp, __KAME_VERSION); |
return sysctl_rdstring(oldp, oldlenp, newp, __KAME_VERSION); |
| case IPV6CTL_USE_DEPRECATED: |
|
| return sysctl_int(oldp, oldlenp, newp, newlen, |
|
| &ip6_use_deprecated); |
|
| default: |
default: |
| return EOPNOTSUPP; |
return EOPNOTSUPP; |
| } |
} |
| /* NOTREACHED */ |
/* NOTREACHED */ |
| } |
} |
| #endif /* __NetBSD__ || __OpenBSD__ */ |
#endif /* __NetBSD__ */ |
| |
|
| #ifdef __bsdi__ |
|
| int *ip6_sysvars[] = IPV6CTL_VARS; |
|
| |
|
| int |
|
| ip6_sysctl(name, namelen, oldp, oldlenp, newp, newlen) |
|
| int *name; |
|
| u_int namelen; |
|
| void *oldp; |
|
| size_t *oldlenp; |
|
| void *newp; |
|
| size_t newlen; |
|
| { |
|
| if (name[0] >= IPV6CTL_MAXID) |
|
| return (EOPNOTSUPP); |
|
| |
|
| switch (name[0]) { |
|
| case IPV6CTL_STATS: |
|
| return sysctl_rdtrunc(oldp, oldlenp, newp, &ip6stat, |
|
| sizeof(ip6stat)); |
|
| case IPV6CTL_KAME_VERSION: |
|
| return sysctl_rdstring(oldp, oldlenp, newp, __KAME_VERSION); |
|
| default: |
|
| return (sysctl_int_arr(ip6_sysvars, name, namelen, |
|
| oldp, oldlenp, newp, newlen)); |
|
| } |
|
| } |
|
| #endif /* __bsdi__ */ |
|