version 1.1.2.1, 1999/06/28 06:37:05 |
version 1.9, 1999/12/13 15:17:22 |
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/* $NetBSD$ */ |
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/* |
/* |
* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. |
* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. |
* All rights reserved. |
* All rights reserved. |
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#endif |
#endif |
#if (defined(__FreeBSD__) && __FreeBSD__ >= 3) || defined(__NetBSD__) |
#if (defined(__FreeBSD__) && __FreeBSD__ >= 3) || defined(__NetBSD__) |
#include "opt_inet.h" |
#include "opt_inet.h" |
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#ifdef __NetBSD__ /*XXX*/ |
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#include "opt_ipsec.h" |
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#endif |
#endif |
#endif |
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#include <sys/param.h> |
#include <sys/param.h> |
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#include <sys/time.h> |
#include <sys/time.h> |
#include <sys/kernel.h> |
#include <sys/kernel.h> |
#include <sys/syslog.h> |
#include <sys/syslog.h> |
#ifdef __NetBSD__ |
#if !defined(__bsdi__) && !(defined(__FreeBSD__) && __FreeBSD__ < 3) |
#include <sys/proc.h> |
#include <sys/proc.h> |
#endif |
#endif |
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#include <net/netisr.h> |
#include <net/netisr.h> |
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#include <netinet/in.h> |
#include <netinet/in.h> |
#include <netinet6/in6_var.h> |
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#include <netinet/in_systm.h> |
#include <netinet/in_systm.h> |
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#ifdef INET |
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#include <netinet/ip.h> |
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#include <netinet/ip_icmp.h> |
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#endif /*INET*/ |
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#if (defined(__FreeBSD__) && __FreeBSD__ >= 3) || defined(__OpenBSD__) || (defined(__bsdi__) && _BSDI_VERSION >= 199802) |
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#include <netinet/in_pcb.h> |
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#endif |
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#include <netinet6/in6_var.h> |
#include <netinet6/ip6.h> |
#include <netinet6/ip6.h> |
#if !defined(__FreeBSD__) || __FreeBSD__ < 3 |
#if !((defined(__FreeBSD__) && __FreeBSD__ >= 3) || defined(__OpenBSD__) || (defined(__bsdi__) && _BSDI_VERSION >= 199802)) |
#include <netinet6/in6_pcb.h> |
#include <netinet6/in6_pcb.h> |
#else |
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#include <netinet/in_pcb.h> |
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#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> |
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#include <netinet6/in6_prefix.h> |
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#ifdef INET |
#ifdef IPV6FIREWALL |
#include <netinet/ip.h> |
#include <netinet6/ip6_fw.h> |
#include <netinet/ip_icmp.h> |
#endif |
#endif /*INET*/ |
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#include <netinet6/ip6protosw.h> |
#include <netinet6/ip6protosw.h> |
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/* we need it for NLOOP. */ |
/* we need it for NLOOP. */ |
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#ifndef __bsdi__ |
#include "loop.h" |
#include "loop.h" |
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#endif |
#include "faith.h" |
#include "faith.h" |
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#include "gif.h" |
#include "gif.h" |
#include "bpfilter.h" |
#include "bpfilter.h" |
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#include <net/net_osdep.h> |
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#ifdef __OpenBSD__ /*KAME IPSEC*/ |
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#undef IPSEC |
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#endif |
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extern struct domain inet6domain; |
extern struct domain inet6domain; |
extern struct ip6protosw inet6sw[]; |
extern struct ip6protosw inet6sw[]; |
#ifdef __bsdi__ |
#ifdef __bsdi__ |
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#if _BSDI_VERSION < 199802 |
extern struct ifnet loif; |
extern struct ifnet loif; |
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#else |
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extern struct ifnet *loifp; |
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#endif |
#endif |
#endif |
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u_char ip6_protox[IPPROTO_MAX]; |
u_char ip6_protox[IPPROTO_MAX]; |
Line 130 static int ip6qmaxlen = IFQ_MAXLEN; |
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Line 152 static int ip6qmaxlen = IFQ_MAXLEN; |
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struct in6_ifaddr *in6_ifaddr; |
struct in6_ifaddr *in6_ifaddr; |
struct ifqueue ip6intrq; |
struct ifqueue ip6intrq; |
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#ifdef __NetBSD__ |
#if defined(__NetBSD__) || defined(__OpenBSD__) |
extern struct ifnet loif[NLOOP]; |
extern struct ifnet loif[NLOOP]; |
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#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 */ |
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#ifdef IPV6FIREWALL |
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/* firewall hooks */ |
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ip6_fw_chk_t *ip6_fw_chk_ptr; |
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ip6_fw_ctl_t *ip6_fw_ctl_ptr; |
#endif |
#endif |
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struct ip6stat ip6stat; |
struct ip6stat ip6stat; |
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static void ip6_init2 __P((void *)); |
static void ip6_init2 __P((void *)); |
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static int ip6_hopopts_input __P((u_int32_t *, long *, struct mbuf **, int *)); |
static int ip6_hopopts_input __P((u_int32_t *, u_int32_t *, struct mbuf **, int *)); |
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#if defined(PTR) |
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extern int ip6_protocol_tr; |
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int ptr_in6 __P((struct mbuf *, struct mbuf **)); |
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extern void ip_forward __P((struct mbuf *, int)); |
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#endif |
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/* |
/* |
* IP6 initialization: fill in IP6 protocol switch table. |
* IP6 initialization: fill in IP6 protocol switch table. |
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ip6intrq.ifq_maxlen = ip6qmaxlen; |
ip6intrq.ifq_maxlen = ip6qmaxlen; |
nd6_init(); |
nd6_init(); |
frag6_init(); |
frag6_init(); |
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#ifdef IPV6FIREWALL |
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ip6_fw_init(); |
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#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); |
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bzero(in6_iflladdr, i); |
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#ifndef __FreeBSD__ |
ip6_init2((void *)0); |
ip6_init2((void *)0); |
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#endif |
} |
} |
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static void |
static void |
ip6_init2(dummy) |
ip6_init2(dummy) |
void *dummy; |
void *dummy; |
{ |
{ |
int i; |
int ret; |
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#if defined(__bsdi__) && _BSDI_VERSION < 199802 |
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struct ifnet *loifp = &loif; |
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#endif |
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/* get EUI64 from somewhere */ |
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ret = in6_ifattach_getifid(NULL); |
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/* |
/* |
* 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. |
*/ |
*/ |
for (i = 0; i < NLOOP; i++) |
#ifdef __bsdi__ |
in6_ifattach(&loif[i], IN6_IFT_LOOP, NULL, 0); |
in6_ifattach(loifp, IN6_IFT_LOOP, NULL, 0); |
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#else |
/* get EUI64 from somewhere, attach pseudo interfaces */ |
in6_ifattach(&loif[0], IN6_IFT_LOOP, NULL, 0); |
if (in6_ifattach_getifid(NULL) == 0) |
#endif |
in6_ifattach_p2p(); |
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/* nd6_timer_init */ |
/* nd6_timer_init */ |
timeout(nd6_timer, (caddr_t)0, hz); |
timeout(nd6_timer, (caddr_t)0, hz); |
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/* router renumbering prefix list maintenance */ |
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timeout(in6_rr_timer, (caddr_t)0, hz); |
} |
} |
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#ifdef __FreeBSD__ |
#ifdef __FreeBSD__ |
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ip6_input(m) |
ip6_input(m) |
struct mbuf *m; |
struct mbuf *m; |
{ |
{ |
register struct ip6_hdr *ip6; |
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; |
long rtalert = -1; |
u_int32_t rtalert = ~0; |
int nxt, ours = 0; |
int nxt, ours = 0; |
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struct ifnet *deliverifp = NULL; |
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#if defined(__bsdi__) && _BSDI_VERSION < 199802 |
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struct ifnet *loifp = &loif; |
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#endif |
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#ifdef IPSEC |
#ifdef IPSEC |
/* |
/* |
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m->m_flags &= ~M_AUTHIPDGM; |
m->m_flags &= ~M_AUTHIPDGM; |
} |
} |
#endif |
#endif |
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/* |
/* |
* mbuf statistics by kazu |
* mbuf statistics by kazu |
*/ |
*/ |
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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) { |
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#ifdef __bsdi__ |
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ip6stat.ip6s_m2m[loifp->if_index]++; /*XXX*/ |
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#else |
ip6stat.ip6s_m2m[loif[0].if_index]++; /*XXX*/ |
ip6stat.ip6s_m2m[loif[0].if_index]++; /*XXX*/ |
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#endif |
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} |
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 |
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ip6stat.ip6s_m1++; |
ip6stat.ip6s_m1++; |
} |
} |
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IP6_EXTHDR_CHECK(m, 0, sizeof(struct ip6_hdr), /*nothing*/); |
in6_ifstat_inc(m->m_pkthdr.rcvif, ifs6_in_receive); |
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ip6stat.ip6s_total++; |
ip6stat.ip6s_total++; |
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if (m->m_len < sizeof(struct ip6_hdr) && |
#ifndef PULLDOWN_TEST |
(m = m_pullup(m, sizeof(struct ip6_hdr))) == 0) { |
/* XXX is the line really necessary? */ |
ip6stat.ip6s_toosmall++; |
IP6_EXTHDR_CHECK(m, 0, sizeof(struct ip6_hdr), /*nothing*/); |
return; |
#endif |
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if (m->m_len < sizeof(struct ip6_hdr)) { |
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struct ifnet *inifp; |
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inifp = m->m_pkthdr.rcvif; |
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if ((m = m_pullup(m, sizeof(struct ip6_hdr))) == 0) { |
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ip6stat.ip6s_toosmall++; |
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in6_ifstat_inc(inifp, ifs6_in_hdrerr); |
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return; |
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} |
} |
} |
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ip6 = mtod(m, struct ip6_hdr *); |
ip6 = mtod(m, struct ip6_hdr *); |
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if ((ip6->ip6_vfc & IPV6_VERSION_MASK) != IPV6_VERSION) { |
if ((ip6->ip6_vfc & IPV6_VERSION_MASK) != IPV6_VERSION) { |
ip6stat.ip6s_badvers++; |
ip6stat.ip6s_badvers++; |
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in6_ifstat_inc(m->m_pkthdr.rcvif, ifs6_in_hdrerr); |
goto bad; |
goto bad; |
} |
} |
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ip6stat.ip6s_nxthist[ip6->ip6_nxt]++; |
ip6stat.ip6s_nxthist[ip6->ip6_nxt]++; |
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#ifdef IPV6FIREWALL |
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/* |
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* Check with the firewall... |
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*/ |
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if (ip6_fw_chk_ptr) { |
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u_short port = 0; |
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/* If ipfw says divert, we have to just drop packet */ |
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/* use port as a dummy argument */ |
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if ((*ip6_fw_chk_ptr)(&ip6, NULL, &port, &m)) { |
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m_freem(m); |
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m = NULL; |
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} |
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if (!m) |
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return; |
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} |
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#endif |
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/* |
/* |
* 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++; |
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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; |
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deliverifp = m->m_pkthdr.rcvif; |
goto hbhcheck; |
goto hbhcheck; |
} else { |
} else { |
ip6stat.ip6s_badscope++; |
ip6stat.ip6s_badscope++; |
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in6_ifstat_inc(m->m_pkthdr.rcvif, ifs6_in_addrerr); |
goto bad; |
goto bad; |
} |
} |
} |
} |
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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; |
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deliverifp = m->m_pkthdr.rcvif; |
goto hbhcheck; |
goto hbhcheck; |
} |
} |
} else { |
} else { |
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= htons(m->m_pkthdr.rcvif->if_index); |
= htons(m->m_pkthdr.rcvif->if_index); |
} |
} |
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#if defined(PTR) |
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/* |
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* |
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*/ |
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if (ip6_protocol_tr) |
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{ |
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struct mbuf *m1 = NULL; |
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switch (ptr_in6(m, &m1)) |
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{ |
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case IPPROTO_IP: goto mcastcheck; |
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case IPPROTO_IPV4: ip_forward(m1, 0); break; |
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case IPPROTO_IPV6: ip6_forward(m1, 0); break; |
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case IPPROTO_MAX: /* discard this packet */ |
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default: |
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} |
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if (m != m1) |
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m_freem(m); |
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return; |
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} |
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mcastcheck: |
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#endif |
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/* |
/* |
* 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; |
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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. |
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else if (!ip6_mrouter) { |
else if (!ip6_mrouter) { |
ip6stat.ip6s_notmember++; |
ip6stat.ip6s_notmember++; |
ip6stat.ip6s_cantforward++; |
ip6stat.ip6s_cantforward++; |
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in6_ifstat_inc(m->m_pkthdr.rcvif, ifs6_in_discard); |
goto bad; |
goto bad; |
} |
} |
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deliverifp = m->m_pkthdr.rcvif; |
goto hbhcheck; |
goto hbhcheck; |
} |
} |
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ip6_forward_rt.ro_dst.sin6_family = AF_INET6; |
ip6_forward_rt.ro_dst.sin6_family = AF_INET6; |
ip6_forward_rt.ro_dst.sin6_addr = ip6->ip6_dst; |
ip6_forward_rt.ro_dst.sin6_addr = ip6->ip6_dst; |
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#if defined(__bsdi__) || defined(__NetBSD__) |
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rtalloc((struct route *)&ip6_forward_rt); |
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#endif |
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#ifdef __FreeBSD__ |
#ifdef __FreeBSD__ |
rtalloc_ign((struct route *)&ip6_forward_rt, RTF_PRCLONING); |
rtalloc_ign((struct route *)&ip6_forward_rt, RTF_PRCLONING); |
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#else |
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rtalloc((struct route *)&ip6_forward_rt); |
#endif |
#endif |
} |
} |
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#ifdef RADISH |
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#define rt6_key(r) ((struct saocaddr_in6 *)((r)->rt_radish->rd_route)) |
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#else |
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#define rt6_key(r) ((struct sockaddr_in6 *)((r)->rt_nodes->rn_key)) |
#define rt6_key(r) ((struct sockaddr_in6 *)((r)->rt_nodes->rn_key)) |
#endif |
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/* |
/* |
* Accept the packet if the forwarding interface to the destination |
* Accept the packet if the forwarding interface to the destination |
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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 |
#ifdef __bsdi__ |
ip6_forward_rt.ro_rt->rt_ifp->if_type == IFT_LOOP) { |
ip6_foward.rt.ro_rt->rt_ifp == &loif |
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#else |
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ip6_forward_rt.ro_rt->rt_ifp == &loif[0] |
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#endif |
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) { |
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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 */ |
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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; |
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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 */ |
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&& 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; |
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deliverifp = ip6_forward_rt.ro_rt->rt_ifp; /*faith*/ |
goto hbhcheck; |
goto hbhcheck; |
} |
} |
} |
} |
#endif |
#endif |
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#if 0 |
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{ |
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/* |
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* Last resort: check in6_ifaddr for incoming interface. |
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* The code is here until I update the "goto ours hack" code above |
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* working right. |
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*/ |
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struct ifaddr *ifa; |
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for (ifa = m->m_pkthdr.rcvif->if_addrlist.tqh_first; |
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ifa; |
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ifa = ifa->ifa_list.tqe_next) { |
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if (ifa->ifa_addr == NULL) |
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continue; /* just for safety */ |
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if (ifa->ifa_addr->sa_family != AF_INET6) |
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continue; |
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if (IN6_ARE_ADDR_EQUAL(IFA_IN6(ifa), &ip6->ip6_dst)) { |
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ours = 1; |
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deliverifp = ifa->ifa_ifp; |
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goto hbhcheck; |
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} |
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} |
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} |
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#endif |
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/* |
/* |
* 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++; |
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in6_ifstat_inc(m->m_pkthdr.rcvif, ifs6_in_discard); |
goto bad; |
goto bad; |
} |
} |
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*/ |
*/ |
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) { |
if (ip6_hopopts_input(&plen, &rtalert, &m, &off)) |
struct ip6_hbh *hbh; |
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if (ip6_hopopts_input(&plen, &rtalert, &m, &off)) { |
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#if 0 /*touches NULL pointer*/ |
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in6_ifstat_inc(m->m_pkthdr.rcvif, ifs6_in_discard); |
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#endif |
return; /* m have already been freed */ |
return; /* m have already been freed */ |
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} |
/* adjust pointer */ |
/* adjust pointer */ |
ip6 = mtod(m, struct ip6_hdr *); |
ip6 = mtod(m, struct ip6_hdr *); |
nxt = ((struct ip6_hbh *)(ip6 + 1))->ip6h_nxt; |
#ifndef PULLDOWN_TEST |
|
/* 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; |
long *rtalertp; /* XXX: should be stored more smart way */ |
u_int32_t *rtalertp; /* XXX: should be stored more smart way */ |
struct mbuf **mp; |
struct mbuf **mp; |
int *offp; |
int *offp; |
{ |
{ |
Line 537 ip6_hopopts_input(plenp, rtalertp, mp, o |
|
Line 708 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 567 ip6_process_hopopts(m, opthead, hbhlen, |
|
Line 754 ip6_process_hopopts(m, opthead, hbhlen, |
|
struct mbuf *m; |
struct mbuf *m; |
u_int8_t *opthead; |
u_int8_t *opthead; |
int hbhlen; |
int hbhlen; |
long *rtalertp; |
u_int32_t *rtalertp; |
u_int32_t *plenp; |
u_int32_t *plenp; |
{ |
{ |
struct ip6_hdr *ip6; |
struct ip6_hdr *ip6; |
Line 588 ip6_process_hopopts(m, opthead, hbhlen, |
|
Line 775 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 601 ip6_process_hopopts(m, opthead, hbhlen, |
|
Line 789 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 616 ip6_process_hopopts(m, opthead, hbhlen, |
|
Line 805 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 709 ip6_unknown_opt(optp, m, off) |
|
Line 903 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 __NetBSD__ |
#ifdef HAVE_NRL_INPCB |
|
# 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 734 ip6_savecontrol(in6p, mp, ip6, m) |
|
Line 959 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 781 ip6_savecontrol(in6p, mp, ip6, m) |
|
Line 1007 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) && |
if ((in6p->in6p_flags & IN6P_HOPOPTS) && privileged) { |
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 792 ip6_savecontrol(in6p, mp, ip6, m) |
|
Line 1017 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 *)(ip6 + 1); |
struct ip6_hbh *hbh; |
|
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 800 ip6_savecontrol(in6p, mp, ip6, m) |
|
Line 1045 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, |
*mp = sbcreatecontrol((caddr_t)hbh, hbhlen, |
(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 821 ip6_savecontrol(in6p, mp, ip6, m) |
|
Line 1065 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; |
(struct ip6_ext *)(mtod(m, caddr_t) + off); |
int elen; |
|
|
|
#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 834 ip6_savecontrol(in6p, mp, ip6, m) |
|
Line 1102 ip6_savecontrol(in6p, mp, ip6, m) |
|
* the option. |
* the option. |
* See the comments on IN6_HOPOPTS. |
* See the comments on IN6_HOPOPTS. |
*/ |
*/ |
if (!p || !suser(p->p_ucred, &p->p_acflag)) |
if (!privileged) |
break; |
break; |
|
|
*mp = sbcreatecontrol((caddr_t)ip6e, |
*mp = sbcreatecontrol((caddr_t)ip6e, elen, |
(ip6e->ip6e_len + 1) << 3, |
|
IPV6_DSTOPTS, |
IPV6_DSTOPTS, |
IPPROTO_IPV6); |
IPPROTO_IPV6); |
if (*mp) |
if (*mp) |
Line 849 ip6_savecontrol(in6p, mp, ip6, m) |
|
Line 1116 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, |
*mp = sbcreatecontrol((caddr_t)ip6e, elen, |
(ip6e->ip6e_len + 1) << 3, |
|
IPV6_RTHDR, |
IPV6_RTHDR, |
IPPROTO_IPV6); |
IPPROTO_IPV6); |
if (*mp) |
if (*mp) |
Line 873 ip6_savecontrol(in6p, mp, ip6, m) |
|
Line 1139 ip6_savecontrol(in6p, mp, ip6, m) |
|
} |
} |
|
|
/* proceed with the next header. */ |
/* proceed with the next header. */ |
if (nxt == IPPROTO_AH) |
off += elen; |
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) |
if ((in6p->in6p_flags & IN6P_HOPOPTS) && privileged) { |
&& p && !suser(p->p_ucred, &p->p_acflag)) { |
|
/* to be done */ |
/* to be done */ |
} |
} |
if ((in6p->in6p_flags & IN6P_DSTOPTS) |
if ((in6p->in6p_flags & IN6P_DSTOPTS) && privileged) { |
&& 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 894 ip6_savecontrol(in6p, mp, ip6, m) |
|
Line 1155 ip6_savecontrol(in6p, mp, ip6, m) |
|
#ifdef __bsdi__ |
#ifdef __bsdi__ |
# undef sbcreatecontrol |
# undef sbcreatecontrol |
#endif |
#endif |
|
#ifdef __OpenBSD__ |
|
# undef in6p_flags |
|
#endif |
} |
} |
|
|
/* |
/* |
Line 959 u_char inet6ctlerrmap[PRC_NCMDS] = { |
|
Line 1223 u_char inet6ctlerrmap[PRC_NCMDS] = { |
|
ENOPROTOOPT |
ENOPROTOOPT |
}; |
}; |
|
|
#ifdef __NetBSD__ |
#if defined(__NetBSD__) || defined(__OpenBSD__) |
#include <vm/vm.h> |
#include <vm/vm.h> |
#include <sys/sysctl.h> |
#include <sys/sysctl.h> |
|
|
Line 1002 ip6_sysctl(name, namelen, oldp, oldlenp, |
|
Line 1266 ip6_sysctl(name, namelen, oldp, oldlenp, |
|
&ip6_hdrnestlimit); |
&ip6_hdrnestlimit); |
case IPV6CTL_DAD_COUNT: |
case IPV6CTL_DAD_COUNT: |
return sysctl_int(oldp, oldlenp, newp, newlen, &ip6_dad_count); |
return sysctl_int(oldp, oldlenp, newp, newlen, &ip6_dad_count); |
#ifdef MAPPED_ADDR_ENABLED |
|
case IPV6CTL_MAPPED_ADDR: |
|
return sysctl_int(oldp, oldlenp, newp, newlen, |
|
&ip6_mapped_addr); |
|
#endif /* MAPPED_ADDR_ENABLED */ |
|
case IPV6CTL_AUTO_FLOWLABEL: |
case IPV6CTL_AUTO_FLOWLABEL: |
return sysctl_int(oldp, oldlenp, newp, newlen, |
return sysctl_int(oldp, oldlenp, newp, newlen, |
&ip6_auto_flowlabel); |
&ip6_auto_flowlabel); |
Line 1018 ip6_sysctl(name, namelen, oldp, oldlenp, |
|
Line 1277 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__ */ |
#endif /* __NetBSD__ || __OpenBSD__ */ |
|
|
|
#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__ */ |