version 1.18, 2000/03/21 23:53:30 |
version 1.162, 2016/07/04 06:48:14 |
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/* $NetBSD$ */ |
/* $NetBSD$ */ |
/* $KAME: ip6_input.c,v 1.72 2000/03/21 09:23:19 itojun Exp $ */ |
/* $KAME: ip6_input.c,v 1.188 2001/03/29 05:34:31 itojun Exp $ */ |
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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. |
* |
* |
* Redistribution and use in source and binary forms, with or without |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* modification, are permitted provided that the following conditions |
* are met: |
* are met: |
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* 3. Neither the name of the project nor the names of its contributors |
* 3. Neither the name of the project nor the names of its contributors |
* may be used to endorse or promote products derived from this software |
* may be used to endorse or promote products derived from this software |
* without specific prior written permission. |
* without specific prior written permission. |
* |
* |
* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND |
* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND |
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* 2. Redistributions in binary form must reproduce the above copyright |
* 2. Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* documentation and/or other materials provided with the distribution. |
* 3. All advertising materials mentioning features or use of this software |
* 3. Neither the name of the University nor the names of its contributors |
* must display the following acknowledgement: |
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* This product includes software developed by the University of |
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* California, Berkeley and its contributors. |
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* 4. Neither the name of the University nor the names of its contributors |
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* may be used to endorse or promote products derived from this software |
* may be used to endorse or promote products derived from this software |
* without specific prior written permission. |
* without specific prior written permission. |
* |
* |
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* @(#)ip_input.c 8.2 (Berkeley) 1/4/94 |
* @(#)ip_input.c 8.2 (Berkeley) 1/4/94 |
*/ |
*/ |
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#include <sys/cdefs.h> |
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__KERNEL_RCSID(0, "$NetBSD$"); |
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#ifdef _KERNEL_OPT |
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#include "opt_gateway.h" |
#include "opt_inet.h" |
#include "opt_inet.h" |
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#include "opt_inet6.h" |
#include "opt_ipsec.h" |
#include "opt_ipsec.h" |
#include "opt_pfil_hooks.h" |
#include "opt_compat_netbsd.h" |
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#endif |
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#include <sys/param.h> |
#include <sys/param.h> |
#include <sys/systm.h> |
#include <sys/systm.h> |
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#include <sys/kernel.h> |
#include <sys/kernel.h> |
#include <sys/syslog.h> |
#include <sys/syslog.h> |
#include <sys/proc.h> |
#include <sys/proc.h> |
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#include <sys/sysctl.h> |
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#include <sys/cprng.h> |
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#include <net/if.h> |
#include <net/if.h> |
#include <net/if_types.h> |
#include <net/if_types.h> |
#include <net/if_dl.h> |
#include <net/if_dl.h> |
#include <net/route.h> |
#include <net/route.h> |
#include <net/netisr.h> |
#include <net/pktqueue.h> |
#ifdef PFIL_HOOKS |
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#include <net/pfil.h> |
#include <net/pfil.h> |
#endif |
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#include <netinet/in.h> |
#include <netinet/in.h> |
#include <netinet/in_systm.h> |
#include <netinet/in_systm.h> |
#ifdef INET |
#ifdef INET |
#include <netinet/ip.h> |
#include <netinet/ip.h> |
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#include <netinet/ip_var.h> |
#include <netinet/ip_icmp.h> |
#include <netinet/ip_icmp.h> |
#endif /*INET*/ |
#endif /* INET */ |
#include <netinet/ip6.h> |
#include <netinet/ip6.h> |
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#include <netinet/portalgo.h> |
#include <netinet6/in6_var.h> |
#include <netinet6/in6_var.h> |
#include <netinet6/ip6_var.h> |
#include <netinet6/ip6_var.h> |
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#include <netinet6/ip6_private.h> |
#include <netinet6/in6_pcb.h> |
#include <netinet6/in6_pcb.h> |
#include <netinet/icmp6.h> |
#include <netinet/icmp6.h> |
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#include <netinet6/scope6_var.h> |
#include <netinet6/in6_ifattach.h> |
#include <netinet6/in6_ifattach.h> |
#include <netinet6/nd6.h> |
#include <netinet6/nd6.h> |
#include <netinet6/in6_prefix.h> |
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#ifdef IPV6FIREWALL |
#ifdef IPSEC |
#include <netinet6/ip6_fw.h> |
#include <netipsec/ipsec.h> |
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#include <netipsec/ipsec6.h> |
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#include <netipsec/key.h> |
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#endif /* IPSEC */ |
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#ifdef COMPAT_50 |
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#include <compat/sys/time.h> |
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#include <compat/sys/socket.h> |
#endif |
#endif |
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#include <netinet6/ip6protosw.h> |
#include <netinet6/ip6protosw.h> |
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/* we need it for NLOOP. */ |
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#include "loop.h" |
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#include "faith.h" |
#include "faith.h" |
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#include "gif.h" |
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#include "bpfilter.h" |
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#include <net/net_osdep.h> |
#include <net/net_osdep.h> |
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extern struct domain inet6domain; |
extern struct domain inet6domain; |
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u_char ip6_protox[IPPROTO_MAX]; |
u_char ip6_protox[IPPROTO_MAX]; |
static int ip6qmaxlen = IFQ_MAXLEN; |
struct pslist_head in6_ifaddr_list; |
struct in6_ifaddr *in6_ifaddr; |
pktqueue_t *ip6_pktq __read_mostly; |
struct ifqueue ip6intrq; |
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extern struct ifnet loif[NLOOP]; |
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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 |
pfil_head_t *inet6_pfil_hook; |
/* 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; |
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#endif |
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struct ip6stat ip6stat; |
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static void ip6_init2 __P((void *)); |
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static int ip6_hopopts_input __P((u_int32_t *, u_int32_t *, struct mbuf **, int *)); |
percpu_t *ip6stat_percpu; |
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#ifdef PTR |
static void ip6_init2(void); |
extern int ip6_protocol_tr; |
static void ip6intr(void *); |
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static struct m_tag *ip6_setdstifaddr(struct mbuf *, const struct in6_ifaddr *); |
int ptr_in6 __P((struct mbuf *, struct mbuf **)); |
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extern void ip_forward __P((struct mbuf *, int)); |
static int ip6_process_hopopts(struct mbuf *, u_int8_t *, int, u_int32_t *, |
#endif |
u_int32_t *); |
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static struct mbuf *ip6_pullexthdr(struct mbuf *, size_t, int); |
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static void sysctl_net_inet6_ip6_setup(struct sysctllog **); |
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/* |
/* |
* IP6 initialization: fill in IP6 protocol switch table. |
* IP6 initialization: fill in IP6 protocol switch table. |
* All protocols not implemented in kernel go to raw IP6 protocol handler. |
* All protocols not implemented in kernel go to raw IP6 protocol handler. |
*/ |
*/ |
void |
void |
ip6_init() |
ip6_init(void) |
{ |
{ |
register struct ip6protosw *pr; |
const struct ip6protosw *pr; |
register int i; |
int i; |
struct timeval tv; |
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PSLIST_INIT(&in6_ifaddr_list); |
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pr = (struct ip6protosw *)pffindproto(PF_INET6, IPPROTO_RAW, SOCK_RAW); |
sysctl_net_inet6_ip6_setup(NULL); |
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pr = (const struct ip6protosw *)pffindproto(PF_INET6, IPPROTO_RAW, SOCK_RAW); |
if (pr == 0) |
if (pr == 0) |
panic("ip6_init"); |
panic("ip6_init"); |
for (i = 0; i < IPPROTO_MAX; i++) |
for (i = 0; i < IPPROTO_MAX; i++) |
ip6_protox[i] = pr - inet6sw; |
ip6_protox[i] = pr - inet6sw; |
for (pr = (struct ip6protosw *)inet6domain.dom_protosw; |
for (pr = (const struct ip6protosw *)inet6domain.dom_protosw; |
pr < (struct ip6protosw *)inet6domain.dom_protoswNPROTOSW; pr++) |
pr < (const struct ip6protosw *)inet6domain.dom_protoswNPROTOSW; pr++) |
if (pr->pr_domain->dom_family == PF_INET6 && |
if (pr->pr_domain->dom_family == PF_INET6 && |
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; |
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ip6_pktq = pktq_create(IFQ_MAXLEN, ip6intr, NULL); |
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KASSERT(ip6_pktq != NULL); |
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scope6_init(); |
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addrsel_policy_init(); |
nd6_init(); |
nd6_init(); |
frag6_init(); |
frag6_init(); |
#ifdef IPV6FIREWALL |
ip6_desync_factor = cprng_fast32() % MAX_TEMP_DESYNC_FACTOR; |
ip6_fw_init(); |
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ip6_init2(); |
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#ifdef GATEWAY |
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ip6flow_init(ip6_hashsize); |
#endif |
#endif |
/* |
/* Register our Packet Filter hook. */ |
* in many cases, random() here does NOT return random number |
inet6_pfil_hook = pfil_head_create(PFIL_TYPE_AF, (void *)AF_INET6); |
* as initialization during bootstrap time occur in fixed order. |
KASSERT(inet6_pfil_hook != NULL); |
*/ |
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microtime(&tv); |
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ip6_flow_seq = random() ^ tv.tv_usec; |
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ip6_init2((void *)0); |
ip6stat_percpu = percpu_alloc(sizeof(uint64_t) * IP6_NSTATS); |
} |
} |
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static void |
static void |
ip6_init2(dummy) |
ip6_init2(void) |
void *dummy; |
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{ |
{ |
int ret; |
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/* get EUI64 from somewhere */ |
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ret = in6_ifattach_getifid(NULL); |
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/* |
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* to route local address of p2p link to loopback, |
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* assign loopback address first. |
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*/ |
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in6_ifattach(&loif[0], IN6_IFT_LOOP, NULL, 0); |
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/* nd6_timer_init */ |
/* timer for regeneranation of temporary addresses randomize ID */ |
timeout(nd6_timer, (caddr_t)0, hz); |
callout_init(&in6_tmpaddrtimer_ch, CALLOUT_MPSAFE); |
/* router renumbering prefix list maintenance */ |
callout_reset(&in6_tmpaddrtimer_ch, |
timeout(in6_rr_timer, (caddr_t)0, hz); |
(ip6_temp_preferred_lifetime - ip6_desync_factor - |
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ip6_temp_regen_advance) * hz, |
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in6_tmpaddrtimer, NULL); |
} |
} |
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/* |
/* |
* IP6 input interrupt handling. Just pass the packet to ip6_input. |
* IP6 input interrupt handling. Just pass the packet to ip6_input. |
*/ |
*/ |
void |
static void |
ip6intr() |
ip6intr(void *arg __unused) |
{ |
{ |
int s; |
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struct mbuf *m; |
struct mbuf *m; |
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for (;;) { |
mutex_enter(softnet_lock); |
s = splimp(); |
while ((m = pktq_dequeue(ip6_pktq)) != NULL) { |
IF_DEQUEUE(&ip6intrq, m); |
struct psref psref; |
splx(s); |
struct ifnet *rcvif = m_get_rcvif_psref(m, &psref); |
if (m == 0) |
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return; |
if (rcvif == NULL) { |
ip6_input(m); |
m_freem(m); |
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continue; |
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} |
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/* |
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* Drop the packet if IPv6 is disabled on the interface. |
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*/ |
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if ((ND_IFINFO(rcvif)->flags & ND6_IFF_IFDISABLED)) { |
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m_put_rcvif_psref(rcvif, &psref); |
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m_freem(m); |
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continue; |
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} |
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ip6_input(m, rcvif); |
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m_put_rcvif_psref(rcvif, &psref); |
} |
} |
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mutex_exit(softnet_lock); |
} |
} |
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extern struct route_in6 ip6_forward_rt; |
extern struct route ip6_forward_rt; |
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void |
void |
ip6_input(m) |
ip6_input(struct mbuf *m, struct ifnet *rcvif) |
struct mbuf *m; |
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{ |
{ |
struct ip6_hdr *ip6; |
struct ip6_hdr *ip6; |
int off = sizeof(struct ip6_hdr), nest; |
int hit, off = sizeof(struct ip6_hdr), nest; |
u_int32_t plen; |
u_int32_t plen; |
u_int32_t rtalert = ~0; |
u_int32_t rtalert = ~0; |
int nxt, ours = 0; |
int nxt, ours = 0, rh_present = 0; |
struct ifnet *deliverifp = NULL; |
struct ifnet *deliverifp = NULL; |
#ifdef PFIL_HOOKS |
int srcrt = 0; |
struct packet_filter_hook *pfh; |
const struct rtentry *rt; |
struct mbuf *m0; |
union { |
int rv; |
struct sockaddr dst; |
#endif /* PFIL_HOOKS */ |
struct sockaddr_in6 dst6; |
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} u; |
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#ifdef IPSEC |
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/* |
/* |
* should the inner packet be considered authentic? |
* make sure we don't have onion peering information into m_tag. |
* see comment in ah4_input(). |
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*/ |
*/ |
if (m) { |
ip6_delaux(m); |
m->m_flags &= ~M_AUTHIPHDR; |
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m->m_flags &= ~M_AUTHIPDGM; |
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} |
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#endif |
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/* |
/* |
* mbuf statistics by kazu |
* mbuf statistics |
*/ |
*/ |
if (m->m_flags & M_EXT) { |
if (m->m_flags & M_EXT) { |
if (m->m_next) |
if (m->m_next) |
ip6stat.ip6s_mext2m++; |
IP6_STATINC(IP6_STAT_MEXT2M); |
else |
else |
ip6stat.ip6s_mext1++; |
IP6_STATINC(IP6_STAT_MEXT1); |
} else { |
} else { |
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#define M2MMAX 32 |
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*/ |
/*XXX*/ IP6_STATINC(IP6_STAT_M2M + lo0ifp->if_index); |
} |
else if (rcvif->if_index < M2MMAX) |
else if (m->m_pkthdr.rcvif->if_index <= 31) |
IP6_STATINC(IP6_STAT_M2M + rcvif->if_index); |
ip6stat.ip6s_m2m[m->m_pkthdr.rcvif->if_index]++; |
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else |
else |
ip6stat.ip6s_m2m[0]++; |
IP6_STATINC(IP6_STAT_M2M); |
} else |
} else |
ip6stat.ip6s_m1++; |
IP6_STATINC(IP6_STAT_M1); |
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#undef M2MMAX |
} |
} |
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in6_ifstat_inc(m->m_pkthdr.rcvif, ifs6_in_receive); |
in6_ifstat_inc(rcvif, ifs6_in_receive); |
ip6stat.ip6s_total++; |
IP6_STATINC(IP6_STAT_TOTAL); |
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#ifndef PULLDOWN_TEST |
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/* XXX is the line really necessary? */ |
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IP6_EXTHDR_CHECK(m, 0, sizeof(struct ip6_hdr), /*nothing*/); |
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#endif |
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if (m->m_len < sizeof(struct ip6_hdr)) { |
/* |
struct ifnet *inifp; |
* If the IPv6 header is not aligned, slurp it up into a new |
inifp = m->m_pkthdr.rcvif; |
* mbuf with space for link headers, in the event we forward |
if ((m = m_pullup(m, sizeof(struct ip6_hdr))) == 0) { |
* it. Otherwise, if it is aligned, make sure the entire base |
ip6stat.ip6s_toosmall++; |
* IPv6 header is in the first mbuf of the chain. |
in6_ifstat_inc(inifp, ifs6_in_hdrerr); |
*/ |
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if (IP6_HDR_ALIGNED_P(mtod(m, void *)) == 0) { |
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if ((m = m_copyup(m, sizeof(struct ip6_hdr), |
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(max_linkhdr + 3) & ~3)) == NULL) { |
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/* XXXJRT new stat, please */ |
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IP6_STATINC(IP6_STAT_TOOSMALL); |
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in6_ifstat_inc(rcvif, ifs6_in_hdrerr); |
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return; |
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} |
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} else if (__predict_false(m->m_len < sizeof(struct ip6_hdr))) { |
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if ((m = m_pullup(m, sizeof(struct ip6_hdr))) == NULL) { |
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IP6_STATINC(IP6_STAT_TOOSMALL); |
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in6_ifstat_inc(rcvif, ifs6_in_hdrerr); |
return; |
return; |
} |
} |
} |
} |
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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++; |
IP6_STATINC(IP6_STAT_BADVERS); |
in6_ifstat_inc(m->m_pkthdr.rcvif, ifs6_in_hdrerr); |
in6_ifstat_inc(rcvif, ifs6_in_hdrerr); |
goto bad; |
goto bad; |
} |
} |
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#ifdef PFIL_HOOKS |
/* |
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* Assume that we can create a fast-forward IP flow entry |
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* based on this packet. |
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*/ |
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m->m_flags |= M_CANFASTFWD; |
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/* |
/* |
* Run through list of hooks for input packets. If there are any |
* Run through list of hooks for input packets. If there are any |
* filters which require that additional packets in the flow are |
* filters which require that additional packets in the flow are |
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* 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. |
*/ |
*/ |
m0 = m; |
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pfh = pfil_hook_get(PFIL_IN, &inetsw[ip_protox[IPPROTO_IPV6]].pr_pfh); |
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for (; pfh; pfh = pfh->pfil_link.tqe_next) |
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if (pfh->pfil_func) { |
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rv = pfh->pfil_func(ip6, sizeof(*ip6), |
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m->m_pkthdr.rcvif, 0, &m0); |
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if (rv) |
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return; |
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m = m0; |
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if (m == NULL) |
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return; |
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ip6 = mtod(m, struct ip6_hdr *); |
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} |
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#endif /* PFIL_HOOKS */ |
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ip6stat.ip6s_nxthist[ip6->ip6_nxt]++; |
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#ifdef IPV6FIREWALL |
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/* |
/* |
* Check with the firewall... |
* let ipfilter look at packet on the wire, |
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* not the decapsulated packet. |
*/ |
*/ |
if (ip6_fw_chk_ptr) { |
#if defined(IPSEC) |
u_short port = 0; |
if (!ipsec_used || !ipsec_indone(m)) |
/* If ipfw says divert, we have to just drop packet */ |
#else |
/* use port as a dummy argument */ |
if (1) |
if ((*ip6_fw_chk_ptr)(&ip6, NULL, &port, &m)) { |
#endif |
m_freem(m); |
{ |
m = NULL; |
struct in6_addr odst; |
} |
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if (!m) |
odst = ip6->ip6_dst; |
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if (pfil_run_hooks(inet6_pfil_hook, &m, rcvif, PFIL_IN) != 0) |
return; |
return; |
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if (m == NULL) |
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return; |
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ip6 = mtod(m, struct ip6_hdr *); |
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srcrt = !IN6_ARE_ADDR_EQUAL(&odst, &ip6->ip6_dst); |
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} |
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IP6_STATINC(IP6_STAT_NXTHIST + ip6->ip6_nxt); |
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#ifdef ALTQ |
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if (altq_input != NULL && (*altq_input)(m, AF_INET6) == 0) { |
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/* packet is dropped by traffic conditioner */ |
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return; |
} |
} |
#endif |
#endif |
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/* |
/* |
* Scope check |
* Check against address spoofing/corruption. |
*/ |
*/ |
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++; |
/* |
in6_ifstat_inc(m->m_pkthdr.rcvif, ifs6_in_addrerr); |
* XXX: "badscope" is not very suitable for a multicast source. |
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*/ |
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IP6_STATINC(IP6_STAT_BADSCOPE); |
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in6_ifstat_inc(rcvif, ifs6_in_addrerr); |
goto bad; |
goto bad; |
} |
} |
/* |
/* |
* The following check is not documented in the spec. Malicious party |
* The following check is not documented in specs. A malicious |
* may be able to use IPv4 mapped addr to confuse tcp/udp stack and |
* party may be able to use IPv4 mapped addr to confuse tcp/udp stack |
* bypass security checks (act as if it was from 127.0.0.1 by using |
* and bypass security checks (act as if it was from 127.0.0.1 by using |
* IPv6 src ::ffff:127.0.0.1). Be cautious. |
* IPv6 src ::ffff:127.0.0.1). Be cautious. |
|
* |
|
* This check chokes if we are in an SIIT cloud. As none of BSDs |
|
* support IPv4-less kernel compilation, we cannot support SIIT |
|
* environment at all. So, it makes more sense for us to reject any |
|
* malicious packets for non-SIIT environment, than try to do a |
|
* partial support for SIIT environment. |
*/ |
*/ |
if (IN6_IS_ADDR_V4MAPPED(&ip6->ip6_src) || |
if (IN6_IS_ADDR_V4MAPPED(&ip6->ip6_src) || |
IN6_IS_ADDR_V4MAPPED(&ip6->ip6_dst)) { |
IN6_IS_ADDR_V4MAPPED(&ip6->ip6_dst)) { |
ip6stat.ip6s_badscope++; |
IP6_STATINC(IP6_STAT_BADSCOPE); |
in6_ifstat_inc(m->m_pkthdr.rcvif, ifs6_in_addrerr); |
in6_ifstat_inc(rcvif, ifs6_in_addrerr); |
goto bad; |
goto bad; |
} |
} |
#if 0 |
#if 0 |
|
|
*/ |
*/ |
if (IN6_IS_ADDR_V4COMPAT(&ip6->ip6_src) || |
if (IN6_IS_ADDR_V4COMPAT(&ip6->ip6_src) || |
IN6_IS_ADDR_V4COMPAT(&ip6->ip6_dst)) { |
IN6_IS_ADDR_V4COMPAT(&ip6->ip6_dst)) { |
ip6stat.ip6s_badscope++; |
IP6_STATINC(IP6_STAT_BADSCOPE); |
in6_ifstat_inc(m->m_pkthdr.rcvif, ifs6_in_addrerr); |
in6_ifstat_inc(rcvif, ifs6_in_addrerr); |
goto bad; |
goto bad; |
} |
} |
#endif |
#endif |
if (IN6_IS_ADDR_LOOPBACK(&ip6->ip6_src) || |
|
IN6_IS_ADDR_LOOPBACK(&ip6->ip6_dst)) { |
|
if (m->m_pkthdr.rcvif->if_flags & IFF_LOOPBACK) { |
|
ours = 1; |
|
deliverifp = m->m_pkthdr.rcvif; |
|
goto hbhcheck; |
|
} else { |
|
ip6stat.ip6s_badscope++; |
|
in6_ifstat_inc(m->m_pkthdr.rcvif, ifs6_in_addrerr); |
|
goto bad; |
|
} |
|
} |
|
|
|
if (m->m_pkthdr.rcvif->if_flags & IFF_LOOPBACK) { |
|
if (IN6_IS_ADDR_LINKLOCAL(&ip6->ip6_dst)) { |
|
ours = 1; |
|
deliverifp = m->m_pkthdr.rcvif; |
|
goto hbhcheck; |
|
} |
|
} else { |
|
if (IN6_IS_SCOPE_LINKLOCAL(&ip6->ip6_src)) |
|
ip6->ip6_src.s6_addr16[1] |
|
= htons(m->m_pkthdr.rcvif->if_index); |
|
if (IN6_IS_SCOPE_LINKLOCAL(&ip6->ip6_dst)) |
|
ip6->ip6_dst.s6_addr16[1] |
|
= htons(m->m_pkthdr.rcvif->if_index); |
|
} |
|
|
|
#ifdef PTR |
|
/* |
/* |
* |
* Disambiguate address scope zones (if there is ambiguity). |
|
* We first make sure that the original source or destination address |
|
* is not in our internal form for scoped addresses. Such addresses |
|
* are not necessarily invalid spec-wise, but we cannot accept them due |
|
* to the usage conflict. |
|
* in6_setscope() then also checks and rejects the cases where src or |
|
* dst are the loopback address and the receiving interface |
|
* is not loopback. |
*/ |
*/ |
if (ip6_protocol_tr) |
if (__predict_false( |
{ |
m_makewritable(&m, 0, sizeof(struct ip6_hdr), M_DONTWAIT))) |
struct mbuf *m1 = NULL; |
goto bad; |
|
ip6 = mtod(m, struct ip6_hdr *); |
switch (ptr_in6(m, &m1)) |
if (in6_clearscope(&ip6->ip6_src) || in6_clearscope(&ip6->ip6_dst)) { |
{ |
IP6_STATINC(IP6_STAT_BADSCOPE); /* XXX */ |
case IPPROTO_IP: goto mcastcheck; |
goto bad; |
case IPPROTO_IPV4: ip_forward(m1, 0); break; |
} |
case IPPROTO_IPV6: ip6_forward(m1, 0); break; |
if (in6_setscope(&ip6->ip6_src, rcvif, NULL) || |
case IPPROTO_MAX: /* discard this packet */ |
in6_setscope(&ip6->ip6_dst, rcvif, NULL)) { |
default: |
IP6_STATINC(IP6_STAT_BADSCOPE); |
} |
goto bad; |
|
|
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); |
in6_ifstat_inc(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. |
*/ |
*/ |
IN6_LOOKUP_MULTI(ip6->ip6_dst, m->m_pkthdr.rcvif, in6m); |
IN6_LOOKUP_MULTI(ip6->ip6_dst, rcvif, in6m); |
if (in6m) |
if (in6m) |
ours = 1; |
ours = 1; |
else if (!ip6_mrouter) { |
else if (!ip6_mrouter) { |
ip6stat.ip6s_notmember++; |
uint64_t *ip6s = IP6_STAT_GETREF(); |
ip6stat.ip6s_cantforward++; |
ip6s[IP6_STAT_NOTMEMBER]++; |
in6_ifstat_inc(m->m_pkthdr.rcvif, ifs6_in_discard); |
ip6s[IP6_STAT_CANTFORWARD]++; |
|
IP6_STAT_PUTREF(); |
|
in6_ifstat_inc(rcvif, ifs6_in_discard); |
goto bad; |
goto bad; |
} |
} |
deliverifp = m->m_pkthdr.rcvif; |
deliverifp = rcvif; |
goto hbhcheck; |
goto hbhcheck; |
} |
} |
|
|
|
sockaddr_in6_init(&u.dst6, &ip6->ip6_dst, 0, 0, 0); |
|
|
/* |
/* |
* Unicast check |
* Unicast check |
*/ |
*/ |
if (ip6_forward_rt.ro_rt == 0 || |
rt = rtcache_lookup2(&ip6_forward_rt, &u.dst, 1, &hit); |
!IN6_ARE_ADDR_EQUAL(&ip6->ip6_dst, |
if (hit) |
&ip6_forward_rt.ro_dst.sin6_addr)) { |
IP6_STATINC(IP6_STAT_FORWARD_CACHEHIT); |
if (ip6_forward_rt.ro_rt) { |
else |
RTFREE(ip6_forward_rt.ro_rt); |
IP6_STATINC(IP6_STAT_FORWARD_CACHEMISS); |
ip6_forward_rt.ro_rt = 0; |
|
} |
|
bzero(&ip6_forward_rt.ro_dst, sizeof(struct sockaddr_in6)); |
|
ip6_forward_rt.ro_dst.sin6_len = sizeof(struct sockaddr_in6); |
|
ip6_forward_rt.ro_dst.sin6_family = AF_INET6; |
|
ip6_forward_rt.ro_dst.sin6_addr = ip6->ip6_dst; |
|
|
|
rtalloc((struct route *)&ip6_forward_rt); |
|
} |
|
|
|
#define rt6_key(r) ((struct sockaddr_in6 *)((r)->rt_nodes->rn_key)) |
#define rt6_getkey(__rt) satocsin6(rt_getkey(__rt)) |
|
|
/* |
/* |
* Accept the packet if the forwarding interface to the destination |
* Accept the packet if the forwarding interface to the destination |
|
|
* But we think it's even useful in some situations, e.g. when using |
* But we think it's even useful in some situations, e.g. when using |
* a special daemon which wants to intercept the packet. |
* a special daemon which wants to intercept the packet. |
*/ |
*/ |
if (ip6_forward_rt.ro_rt && |
if (rt != NULL && |
(ip6_forward_rt.ro_rt->rt_flags & |
(rt->rt_flags & (RTF_HOST|RTF_GATEWAY)) == RTF_HOST && |
(RTF_HOST|RTF_GATEWAY)) == RTF_HOST && |
|
#if 0 |
#if 0 |
/* |
/* |
* The check below is redundant since the comparison of |
* The check below is redundant since the comparison of |
* the destination and the key of the rtentry has |
* the destination and the key of the rtentry has |
* already done through looking up the routing table. |
* already done through looking up the routing table. |
*/ |
*/ |
IN6_ARE_ADDR_EQUAL(&ip6->ip6_dst, |
IN6_ARE_ADDR_EQUAL(&ip6->ip6_dst, &rt6_getkey(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) { |
rt->rt_ifp->if_type == IFT_LOOP) { |
struct in6_ifaddr *ia6 = |
struct in6_ifaddr *ia6 = (struct in6_ifaddr *)rt->rt_ifa; |
(struct in6_ifaddr *)ip6_forward_rt.ro_rt->rt_ifa; |
|
/* packet to tentative address must not be received */ |
|
if (ia6->ia6_flags & IN6_IFF_ANYCAST) |
if (ia6->ia6_flags & IN6_IFF_ANYCAST) |
m->m_flags |= M_ANYCAST6; |
m->m_flags |= M_ANYCAST6; |
|
/* |
|
* packets to a tentative, duplicated, or somehow invalid |
|
* address must not be accepted. |
|
*/ |
if (!(ia6->ia6_flags & IN6_IFF_NOTREADY)) { |
if (!(ia6->ia6_flags & IN6_IFF_NOTREADY)) { |
/* this interface is ready */ |
/* this address is ready */ |
ours = 1; |
ours = 1; |
deliverifp = ia6->ia_ifp; /* correct? */ |
deliverifp = ia6->ia_ifp; /* correct? */ |
goto hbhcheck; |
goto hbhcheck; |
} else { |
} else { |
/* this interface is not ready, fall through */ |
/* address is not ready, so discard the packet. */ |
|
nd6log(LOG_INFO, "packet to an unready address %s->%s\n", |
|
ip6_sprintf(&ip6->ip6_src), |
|
ip6_sprintf(&ip6->ip6_dst)); |
|
|
|
goto bad; |
} |
} |
} |
} |
|
|
/* |
/* |
* FAITH(Firewall Aided Internet Translator) |
* FAITH (Firewall Aided Internet Translator) |
*/ |
*/ |
#if defined(NFAITH) && 0 < NFAITH |
#if defined(NFAITH) && 0 < NFAITH |
if (ip6_keepfaith) { |
if (ip6_keepfaith) { |
if (ip6_forward_rt.ro_rt && ip6_forward_rt.ro_rt->rt_ifp |
if (rt != NULL && rt->rt_ifp != NULL && |
&& ip6_forward_rt.ro_rt->rt_ifp->if_type == IFT_FAITH) { |
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*/ |
deliverifp = rt->rt_ifp; /* faith */ |
goto hbhcheck; |
goto hbhcheck; |
} |
} |
} |
} |
|
|
* working right. |
* working right. |
*/ |
*/ |
struct ifaddr *ifa; |
struct ifaddr *ifa; |
for (ifa = m->m_pkthdr.rcvif->if_addrlist.tqh_first; |
IFADDR_FOREACH(ifa, rcvif) { |
ifa; |
|
ifa = ifa->ifa_list.tqe_next) { |
|
if (ifa->ifa_addr == NULL) |
|
continue; /* just for safety */ |
|
if (ifa->ifa_addr->sa_family != AF_INET6) |
if (ifa->ifa_addr->sa_family != AF_INET6) |
continue; |
continue; |
if (IN6_ARE_ADDR_EQUAL(IFA_IN6(ifa), &ip6->ip6_dst)) { |
if (IN6_ARE_ADDR_EQUAL(IFA_IN6(ifa), &ip6->ip6_dst)) { |
|
|
* and we're not a router. |
* and we're not a router. |
*/ |
*/ |
if (!ip6_forwarding) { |
if (!ip6_forwarding) { |
ip6stat.ip6s_cantforward++; |
IP6_STATINC(IP6_STAT_CANTFORWARD); |
in6_ifstat_inc(m->m_pkthdr.rcvif, ifs6_in_discard); |
in6_ifstat_inc(rcvif, ifs6_in_discard); |
goto bad; |
goto bad; |
} |
} |
|
|
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) == NULL) { |
|
struct in6_ifaddr *ia6; |
|
|
|
ia6 = in6_ifawithifp(deliverifp, &ip6->ip6_dst); |
|
if (ia6 != NULL && ip6_setdstifaddr(m, ia6) == NULL) { |
|
/* |
|
* 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. |
|
|
|
|
if (ip6_hopopts_input(&plen, &rtalert, &m, &off)) { |
if (ip6_hopopts_input(&plen, &rtalert, &m, &off)) { |
#if 0 /*touches NULL pointer*/ |
#if 0 /*touches NULL pointer*/ |
in6_ifstat_inc(m->m_pkthdr.rcvif, ifs6_in_discard); |
in6_ifstat_inc(rcvif, ifs6_in_discard); |
#endif |
#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 |
|
/* ip6_hopopts_input() ensures that mbuf is contiguous */ |
/* |
hbh = (struct ip6_hbh *)(ip6 + 1); |
* if the payload length field is 0 and the next header field |
#else |
* indicates Hop-by-Hop Options header, then a Jumbo Payload |
|
* option MUST be included. |
|
*/ |
|
if (ip6->ip6_plen == 0 && plen == 0) { |
|
/* |
|
* Note that if a valid jumbo payload option is |
|
* contained, ip6_hopopts_input() must set a valid |
|
* (non-zero) payload length to the variable plen. |
|
*/ |
|
IP6_STATINC(IP6_STAT_BADOPTIONS); |
|
in6_ifstat_inc(rcvif, ifs6_in_discard); |
|
in6_ifstat_inc(rcvif, ifs6_in_hdrerr); |
|
icmp6_error(m, ICMP6_PARAM_PROB, |
|
ICMP6_PARAMPROB_HEADER, |
|
(char *)&ip6->ip6_plen - (char *)ip6); |
|
return; |
|
} |
IP6_EXTHDR_GET(hbh, struct ip6_hbh *, m, sizeof(struct ip6_hdr), |
IP6_EXTHDR_GET(hbh, struct ip6_hbh *, m, sizeof(struct ip6_hdr), |
sizeof(struct ip6_hbh)); |
sizeof(struct ip6_hbh)); |
if (hbh == NULL) { |
if (hbh == NULL) { |
ip6stat.ip6s_tooshort++; |
IP6_STATINC(IP6_STAT_TOOSHORT); |
return; |
return; |
} |
} |
#endif |
KASSERT(IP6_HDR_ALIGNED_P(hbh)); |
nxt = hbh->ip6h_nxt; |
nxt = hbh->ip6h_nxt; |
|
|
/* |
/* |
|
|
* Drop packet if shorter than we expect. |
* Drop packet if shorter than we expect. |
*/ |
*/ |
if (m->m_pkthdr.len - sizeof(struct ip6_hdr) < plen) { |
if (m->m_pkthdr.len - sizeof(struct ip6_hdr) < plen) { |
ip6stat.ip6s_tooshort++; |
IP6_STATINC(IP6_STAT_TOOSHORT); |
in6_ifstat_inc(m->m_pkthdr.rcvif, ifs6_in_truncated); |
in6_ifstat_inc(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) { |
|
|
* ip6_mforward() returns a non-zero value, the packet |
* ip6_mforward() returns a non-zero value, the packet |
* must be discarded, else it may be accepted below. |
* must be discarded, else it may be accepted below. |
*/ |
*/ |
if (ip6_mrouter && ip6_mforward(ip6, m->m_pkthdr.rcvif, m)) { |
if (ip6_mrouter && ip6_mforward(ip6, rcvif, m)) { |
ip6stat.ip6s_cantforward++; |
IP6_STATINC(IP6_STAT_CANTFORWARD); |
m_freem(m); |
m_freem(m); |
return; |
return; |
} |
} |
|
|
m_freem(m); |
m_freem(m); |
return; |
return; |
} |
} |
} |
} else if (!ours) { |
else if (!ours) { |
ip6_forward(m, srcrt); |
ip6_forward(m, 0); |
|
return; |
return; |
} |
} |
|
|
|
ip6 = mtod(m, struct ip6_hdr *); |
|
|
|
/* |
|
* Malicious party may be able to use IPv4 mapped addr to confuse |
|
* tcp/udp stack and bypass security checks (act as if it was from |
|
* 127.0.0.1 by using IPv6 src ::ffff:127.0.0.1). Be cautious. |
|
* |
|
* For SIIT end node behavior, you may want to disable the check. |
|
* However, you will become vulnerable to attacks using IPv4 mapped |
|
* source. |
|
*/ |
|
if (IN6_IS_ADDR_V4MAPPED(&ip6->ip6_src) || |
|
IN6_IS_ADDR_V4MAPPED(&ip6->ip6_dst)) { |
|
IP6_STATINC(IP6_STAT_BADSCOPE); |
|
in6_ifstat_inc(rcvif, ifs6_in_addrerr); |
|
goto bad; |
|
} |
|
|
/* |
/* |
* Tell launch routine the next header |
* Tell launch routine the next header |
*/ |
*/ |
#ifdef IFA_STATS |
#ifdef IFA_STATS |
if (IFA_STATS && deliverifp != NULL) { |
if (deliverifp != NULL) { |
struct in6_ifaddr *ia6; |
struct in6_ifaddr *ia6; |
ip6 = mtod(m, struct ip6_hdr *); |
|
ia6 = in6_ifawithifp(deliverifp, &ip6->ip6_dst); |
ia6 = in6_ifawithifp(deliverifp, &ip6->ip6_dst); |
if (ia6) |
if (ia6) |
ia6->ia_ifa.ifa_data.ifad_inbytes += m->m_pkthdr.len; |
ia6->ia_ifa.ifa_data.ifad_inbytes += m->m_pkthdr.len; |
} |
} |
#endif |
#endif |
ip6stat.ip6s_delivered++; |
IP6_STATINC(IP6_STAT_DELIVERED); |
in6_ifstat_inc(deliverifp, ifs6_in_deliver); |
in6_ifstat_inc(deliverifp, ifs6_in_deliver); |
nest = 0; |
nest = 0; |
|
|
|
rh_present = 0; |
while (nxt != IPPROTO_DONE) { |
while (nxt != IPPROTO_DONE) { |
if (ip6_hdrnestlimit && (++nest > ip6_hdrnestlimit)) { |
if (ip6_hdrnestlimit && (++nest > ip6_hdrnestlimit)) { |
ip6stat.ip6s_toomanyhdr++; |
IP6_STATINC(IP6_STAT_TOOMANYHDR); |
|
in6_ifstat_inc(rcvif, ifs6_in_hdrerr); |
goto bad; |
goto bad; |
} |
} |
|
|
|
|
* more sanity checks in header chain processing. |
* more sanity checks in header chain processing. |
*/ |
*/ |
if (m->m_pkthdr.len < off) { |
if (m->m_pkthdr.len < off) { |
ip6stat.ip6s_tooshort++; |
IP6_STATINC(IP6_STAT_TOOSHORT); |
in6_ifstat_inc(m->m_pkthdr.rcvif, ifs6_in_truncated); |
in6_ifstat_inc(rcvif, ifs6_in_truncated); |
goto bad; |
goto bad; |
} |
} |
|
|
|
if (nxt == IPPROTO_ROUTING) { |
|
if (rh_present++) { |
|
in6_ifstat_inc(rcvif, ifs6_in_hdrerr); |
|
IP6_STATINC(IP6_STAT_BADOPTIONS); |
|
goto bad; |
|
} |
|
} |
|
|
|
#ifdef IPSEC |
|
if (ipsec_used) { |
|
/* |
|
* enforce IPsec policy checking if we are seeing last |
|
* header. note that we do not visit this with |
|
* protocols with pcb layer code - like udp/tcp/raw ip. |
|
*/ |
|
if ((inet6sw[ip_protox[nxt]].pr_flags |
|
& PR_LASTHDR) != 0) { |
|
int error = ipsec6_input(m); |
|
if (error) |
|
goto bad; |
|
} |
|
} |
|
#endif /* IPSEC */ |
|
|
nxt = (*inet6sw[ip6_protox[nxt]].pr_input)(&m, &off, nxt); |
nxt = (*inet6sw[ip6_protox[nxt]].pr_input)(&m, &off, nxt); |
} |
} |
return; |
return; |
|
|
} |
} |
|
|
/* |
/* |
|
* set/grab in6_ifaddr correspond to IPv6 destination address. |
|
*/ |
|
static struct m_tag * |
|
ip6_setdstifaddr(struct mbuf *m, const struct in6_ifaddr *ia) |
|
{ |
|
struct m_tag *mtag; |
|
struct ip6aux *ip6a; |
|
|
|
mtag = ip6_addaux(m); |
|
if (mtag == NULL) |
|
return NULL; |
|
|
|
ip6a = (struct ip6aux *)(mtag + 1); |
|
if (in6_setscope(&ip6a->ip6a_src, ia->ia_ifp, &ip6a->ip6a_scope_id)) { |
|
IP6_STATINC(IP6_STAT_BADSCOPE); |
|
return NULL; |
|
} |
|
|
|
ip6a->ip6a_src = ia->ia_addr.sin6_addr; |
|
ip6a->ip6a_flags = ia->ia6_flags; |
|
return mtag; |
|
} |
|
|
|
const struct ip6aux * |
|
ip6_getdstifaddr(struct mbuf *m) |
|
{ |
|
struct m_tag *mtag; |
|
|
|
mtag = ip6_findaux(m); |
|
if (mtag != NULL) |
|
return (struct ip6aux *)(mtag + 1); |
|
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. |
|
* |
|
* rtalertp - XXX: should be stored more smart way |
*/ |
*/ |
static int |
int |
ip6_hopopts_input(plenp, rtalertp, mp, offp) |
ip6_hopopts_input(u_int32_t *plenp, u_int32_t *rtalertp, |
u_int32_t *plenp; |
struct mbuf **mp, int *offp) |
u_int32_t *rtalertp; /* XXX: should be stored more smart way */ |
|
struct mbuf **mp; |
|
int *offp; |
|
{ |
{ |
register struct mbuf *m = *mp; |
struct mbuf *m = *mp; |
int off = *offp, hbhlen; |
int off = *offp, hbhlen; |
struct ip6_hbh *hbh; |
struct ip6_hbh *hbh; |
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); |
|
hbh = (struct ip6_hbh *)(mtod(m, caddr_t) + off); |
|
hbhlen = (hbh->ip6h_len + 1) << 3; |
|
|
|
IP6_EXTHDR_CHECK(m, off, hbhlen, -1); |
|
hbh = (struct ip6_hbh *)(mtod(m, caddr_t) + off); |
|
#else |
|
IP6_EXTHDR_GET(hbh, struct ip6_hbh *, m, |
IP6_EXTHDR_GET(hbh, struct ip6_hbh *, m, |
sizeof(struct ip6_hdr), sizeof(struct ip6_hbh)); |
sizeof(struct ip6_hdr), sizeof(struct ip6_hbh)); |
if (hbh == NULL) { |
if (hbh == NULL) { |
ip6stat.ip6s_tooshort++; |
IP6_STATINC(IP6_STAT_TOOSHORT); |
return -1; |
return -1; |
} |
} |
hbhlen = (hbh->ip6h_len + 1) << 3; |
hbhlen = (hbh->ip6h_len + 1) << 3; |
IP6_EXTHDR_GET(hbh, struct ip6_hbh *, m, sizeof(struct ip6_hdr), |
IP6_EXTHDR_GET(hbh, struct ip6_hbh *, m, sizeof(struct ip6_hdr), |
hbhlen); |
hbhlen); |
if (hbh == NULL) { |
if (hbh == NULL) { |
ip6stat.ip6s_tooshort++; |
IP6_STATINC(IP6_STAT_TOOSHORT); |
return -1; |
return -1; |
} |
} |
#endif |
KASSERT(IP6_HDR_ALIGNED_P(hbh)); |
off += hbhlen; |
off += hbhlen; |
hbhlen -= sizeof(struct ip6_hbh); |
hbhlen -= sizeof(struct ip6_hbh); |
opt = (u_int8_t *)hbh + sizeof(struct ip6_hbh); |
|
|
|
if (ip6_process_hopopts(m, (u_int8_t *)hbh + sizeof(struct ip6_hbh), |
if (ip6_process_hopopts(m, (u_int8_t *)hbh + sizeof(struct ip6_hbh), |
hbhlen, rtalertp, plenp) < 0) |
hbhlen, rtalertp, plenp) < 0) |
return(-1); |
return (-1); |
|
|
*offp = off; |
*offp = off; |
*mp = m; |
*mp = m; |
return(0); |
return (0); |
} |
} |
|
|
/* |
/* |
Line 750 ip6_hopopts_input(plenp, rtalertp, mp, o |
|
Line 842 ip6_hopopts_input(plenp, rtalertp, mp, o |
|
* This function is separate from ip6_hopopts_input() in order to |
* This function is separate from ip6_hopopts_input() in order to |
* handle a case where the sending node itself process its hop-by-hop |
* handle a case where the sending node itself process its hop-by-hop |
* options header. In such a case, the function is called from ip6_output(). |
* options header. In such a case, the function is called from ip6_output(). |
|
* |
|
* The function assumes that hbh header is located right after the IPv6 header |
|
* (RFC2460 p7), opthead is pointer into data content in m, and opthead to |
|
* opthead + hbhlen is located in continuous memory region. |
*/ |
*/ |
int |
static int |
ip6_process_hopopts(m, opthead, hbhlen, rtalertp, plenp) |
ip6_process_hopopts(struct mbuf *m, u_int8_t *opthead, int hbhlen, |
struct mbuf *m; |
u_int32_t *rtalertp, u_int32_t *plenp) |
u_int8_t *opthead; |
|
int hbhlen; |
|
u_int32_t *rtalertp; |
|
u_int32_t *plenp; |
|
{ |
{ |
struct ip6_hdr *ip6; |
struct ip6_hdr *ip6; |
int optlen = 0; |
int optlen = 0; |
u_int8_t *opt = opthead; |
u_int8_t *opt = opthead; |
u_int16_t rtalert_val; |
u_int16_t rtalert_val; |
|
u_int32_t jumboplen; |
|
const int erroff = sizeof(struct ip6_hdr) + sizeof(struct ip6_hbh); |
|
|
for (; hbhlen > 0; hbhlen -= optlen, opt += optlen) { |
for (; hbhlen > 0; hbhlen -= optlen, opt += optlen) { |
switch(*opt) { |
switch (*opt) { |
case IP6OPT_PAD1: |
case IP6OPT_PAD1: |
optlen = 1; |
optlen = 1; |
break; |
break; |
case IP6OPT_PADN: |
case IP6OPT_PADN: |
if (hbhlen < IP6OPT_MINLEN) { |
if (hbhlen < IP6OPT_MINLEN) { |
ip6stat.ip6s_toosmall++; |
IP6_STATINC(IP6_STAT_TOOSMALL); |
goto bad; |
goto bad; |
} |
} |
optlen = *(opt + 1) + 2; |
optlen = *(opt + 1) + 2; |
break; |
break; |
case IP6OPT_RTALERT: |
case IP6OPT_RTALERT: |
/* XXX may need check for alignment */ |
/* XXX may need check for alignment */ |
if (hbhlen < IP6OPT_RTALERT_LEN) { |
if (hbhlen < IP6OPT_RTALERT_LEN) { |
ip6stat.ip6s_toosmall++; |
IP6_STATINC(IP6_STAT_TOOSMALL); |
goto bad; |
goto bad; |
} |
} |
if (*(opt + 1) != IP6OPT_RTALERT_LEN - 2) |
if (*(opt + 1) != IP6OPT_RTALERT_LEN - 2) { |
/* XXX: should we discard the packet? */ |
/* XXX stat */ |
log(LOG_ERR, "length of router alert opt is inconsitent(%d)", |
icmp6_error(m, ICMP6_PARAM_PROB, |
*(opt + 1)); |
ICMP6_PARAMPROB_HEADER, |
optlen = IP6OPT_RTALERT_LEN; |
erroff + opt + 1 - opthead); |
bcopy((caddr_t)(opt + 2), (caddr_t)&rtalert_val, 2); |
return (-1); |
*rtalertp = ntohs(rtalert_val); |
} |
break; |
optlen = IP6OPT_RTALERT_LEN; |
case IP6OPT_JUMBO: |
memcpy((void *)&rtalert_val, (void *)(opt + 2), 2); |
/* XXX may need check for alignment */ |
*rtalertp = ntohs(rtalert_val); |
if (hbhlen < IP6OPT_JUMBO_LEN) { |
break; |
ip6stat.ip6s_toosmall++; |
case IP6OPT_JUMBO: |
goto bad; |
/* XXX may need check for alignment */ |
} |
if (hbhlen < IP6OPT_JUMBO_LEN) { |
if (*(opt + 1) != IP6OPT_JUMBO_LEN - 2) |
IP6_STATINC(IP6_STAT_TOOSMALL); |
/* XXX: should we discard the packet? */ |
goto bad; |
log(LOG_ERR, "length of jumbopayload opt " |
} |
"is inconsistent(%d)", |
if (*(opt + 1) != IP6OPT_JUMBO_LEN - 2) { |
*(opt + 1)); |
/* XXX stat */ |
optlen = IP6OPT_JUMBO_LEN; |
icmp6_error(m, ICMP6_PARAM_PROB, |
|
ICMP6_PARAMPROB_HEADER, |
/* |
erroff + opt + 1 - opthead); |
* We can simply cast because of the alignment |
return (-1); |
* requirement of the jumbo payload option. |
} |
*/ |
optlen = IP6OPT_JUMBO_LEN; |
#if 0 |
|
*plenp = ntohl(*(u_int32_t *)(opt + 2)); |
/* |
#else |
* IPv6 packets that have non 0 payload length |
bcopy(opt + 2, plenp, sizeof(*plenp)); |
* must not contain a jumbo payload option. |
*plenp = htonl(*plenp); |
*/ |
|
ip6 = mtod(m, struct ip6_hdr *); |
|
if (ip6->ip6_plen) { |
|
IP6_STATINC(IP6_STAT_BADOPTIONS); |
|
icmp6_error(m, ICMP6_PARAM_PROB, |
|
ICMP6_PARAMPROB_HEADER, |
|
erroff + opt - opthead); |
|
return (-1); |
|
} |
|
|
|
/* |
|
* We may see jumbolen in unaligned location, so |
|
* we'd need to perform bcopy(). |
|
*/ |
|
memcpy(&jumboplen, opt + 2, sizeof(jumboplen)); |
|
jumboplen = (u_int32_t)htonl(jumboplen); |
|
|
|
#if 1 |
|
/* |
|
* if there are multiple jumbo payload options, |
|
* *plenp will be non-zero and the packet will be |
|
* rejected. |
|
* the behavior may need some debate in ipngwg - |
|
* multiple options does not make sense, however, |
|
* there's no explicit mention in specification. |
|
*/ |
|
if (*plenp != 0) { |
|
IP6_STATINC(IP6_STAT_BADOPTIONS); |
|
icmp6_error(m, ICMP6_PARAM_PROB, |
|
ICMP6_PARAMPROB_HEADER, |
|
erroff + opt + 2 - opthead); |
|
return (-1); |
|
} |
#endif |
#endif |
if (*plenp <= IPV6_MAXPACKET) { |
|
/* |
/* |
* jumbo payload length must be larger |
* jumbo payload length must be larger than 65535. |
* than 65535 |
*/ |
*/ |
if (jumboplen <= IPV6_MAXPACKET) { |
ip6stat.ip6s_badoptions++; |
IP6_STATINC(IP6_STAT_BADOPTIONS); |
icmp6_error(m, ICMP6_PARAM_PROB, |
icmp6_error(m, ICMP6_PARAM_PROB, |
ICMP6_PARAMPROB_HEADER, |
ICMP6_PARAMPROB_HEADER, |
sizeof(struct ip6_hdr) + |
erroff + opt + 2 - opthead); |
sizeof(struct ip6_hbh) + |
return (-1); |
opt + 2 - opthead); |
} |
return(-1); |
*plenp = jumboplen; |
} |
|
|
break; |
ip6 = mtod(m, struct ip6_hdr *); |
default: /* unknown option */ |
if (ip6->ip6_plen) { |
if (hbhlen < IP6OPT_MINLEN) { |
/* |
IP6_STATINC(IP6_STAT_TOOSMALL); |
* IPv6 packets that have non 0 payload length |
goto bad; |
* must not contain a jumbo paylod option. |
} |
*/ |
optlen = ip6_unknown_opt(opt, m, |
ip6stat.ip6s_badoptions++; |
erroff + opt - opthead); |
icmp6_error(m, ICMP6_PARAM_PROB, |
if (optlen == -1) |
ICMP6_PARAMPROB_HEADER, |
return (-1); |
sizeof(struct ip6_hdr) + |
optlen += 2; |
sizeof(struct ip6_hbh) + |
break; |
opt - opthead); |
|
return(-1); |
|
} |
|
break; |
|
default: /* unknown option */ |
|
if (hbhlen < IP6OPT_MINLEN) { |
|
ip6stat.ip6s_toosmall++; |
|
goto bad; |
|
} |
|
if ((optlen = ip6_unknown_opt(opt, m, |
|
sizeof(struct ip6_hdr) + |
|
sizeof(struct ip6_hbh) + |
|
opt - opthead)) == -1) |
|
return(-1); |
|
optlen += 2; |
|
break; |
|
} |
} |
} |
} |
|
|
return(0); |
return (0); |
|
|
bad: |
bad: |
m_freem(m); |
m_freem(m); |
return(-1); |
return (-1); |
} |
} |
|
|
/* |
/* |
Line 871 ip6_process_hopopts(m, opthead, hbhlen, |
|
Line 981 ip6_process_hopopts(m, opthead, hbhlen, |
|
* is not continuous in order to return an ICMPv6 error. |
* is not continuous in order to return an ICMPv6 error. |
*/ |
*/ |
int |
int |
ip6_unknown_opt(optp, m, off) |
ip6_unknown_opt(u_int8_t *optp, struct mbuf *m, int off) |
u_int8_t *optp; |
|
struct mbuf *m; |
|
int off; |
|
{ |
{ |
struct ip6_hdr *ip6; |
struct ip6_hdr *ip6; |
|
|
switch(IP6OPT_TYPE(*optp)) { |
switch (IP6OPT_TYPE(*optp)) { |
case IP6OPT_TYPE_SKIP: /* ignore the option */ |
case IP6OPT_TYPE_SKIP: /* ignore the option */ |
return((int)*(optp + 1)); |
return ((int)*(optp + 1)); |
case IP6OPT_TYPE_DISCARD: /* silently discard */ |
case IP6OPT_TYPE_DISCARD: /* silently discard */ |
m_freem(m); |
m_freem(m); |
return(-1); |
return (-1); |
case IP6OPT_TYPE_FORCEICMP: /* send ICMP even if multicasted */ |
case IP6OPT_TYPE_FORCEICMP: /* send ICMP even if multicasted */ |
ip6stat.ip6s_badoptions++; |
IP6_STATINC(IP6_STAT_BADOPTIONS); |
icmp6_error(m, ICMP6_PARAM_PROB, ICMP6_PARAMPROB_OPTION, off); |
icmp6_error(m, ICMP6_PARAM_PROB, ICMP6_PARAMPROB_OPTION, off); |
return(-1); |
return (-1); |
case IP6OPT_TYPE_ICMP: /* send ICMP if not multicasted */ |
case IP6OPT_TYPE_ICMP: /* send ICMP if not multicasted */ |
ip6stat.ip6s_badoptions++; |
IP6_STATINC(IP6_STAT_BADOPTIONS); |
ip6 = mtod(m, struct ip6_hdr *); |
ip6 = mtod(m, struct ip6_hdr *); |
if (IN6_IS_ADDR_MULTICAST(&ip6->ip6_dst) || |
if (IN6_IS_ADDR_MULTICAST(&ip6->ip6_dst) || |
(m->m_flags & (M_BCAST|M_MCAST))) |
(m->m_flags & (M_BCAST|M_MCAST))) |
m_freem(m); |
m_freem(m); |
else |
else |
icmp6_error(m, ICMP6_PARAM_PROB, |
icmp6_error(m, ICMP6_PARAM_PROB, |
ICMP6_PARAMPROB_OPTION, off); |
ICMP6_PARAMPROB_OPTION, off); |
return(-1); |
return (-1); |
} |
} |
|
|
m_freem(m); /* XXX: NOTREACHED */ |
m_freem(m); /* XXX: NOTREACHED */ |
return(-1); |
return (-1); |
} |
} |
|
|
/* |
/* |
Line 916 ip6_unknown_opt(optp, m, off) |
|
Line 1023 ip6_unknown_opt(optp, m, off) |
|
* you are using IP6_EXTHDR_CHECK() not m_pulldown()) |
* you are using IP6_EXTHDR_CHECK() not m_pulldown()) |
*/ |
*/ |
void |
void |
ip6_savecontrol(in6p, mp, ip6, m) |
ip6_savecontrol(struct in6pcb *in6p, struct mbuf **mp, |
register struct in6pcb *in6p; |
struct ip6_hdr *ip6, struct mbuf *m) |
register struct mbuf **mp; |
{ |
register struct ip6_hdr *ip6; |
#ifdef RFC2292 |
register struct mbuf *m; |
#define IS2292(x, y) ((in6p->in6p_flags & IN6P_RFC2292) ? (x) : (y)) |
{ |
#else |
struct proc *p = curproc; /* XXX */ |
#define IS2292(x, y) (y) |
int privileged; |
#endif |
|
|
privileged = 0; |
|
if (p && !suser(p->p_ucred, &p->p_acflag)) |
|
privileged++; |
|
|
|
#ifdef SO_TIMESTAMP |
if (in6p->in6p_socket->so_options & SO_TIMESTAMP |
if (in6p->in6p_socket->so_options & SO_TIMESTAMP) { |
#ifdef SO_OTIMESTAMP |
|
|| in6p->in6p_socket->so_options & SO_OTIMESTAMP |
|
#endif |
|
) { |
struct timeval tv; |
struct timeval tv; |
|
|
microtime(&tv); |
microtime(&tv); |
*mp = sbcreatecontrol((caddr_t) &tv, sizeof(tv), |
#ifdef SO_OTIMESTAMP |
SCM_TIMESTAMP, SOL_SOCKET); |
if (in6p->in6p_socket->so_options & SO_OTIMESTAMP) { |
if (*mp) |
struct timeval50 tv50; |
mp = &(*mp)->m_next; |
timeval_to_timeval50(&tv, &tv50); |
} |
*mp = sbcreatecontrol((void *) &tv50, sizeof(tv50), |
|
SCM_OTIMESTAMP, SOL_SOCKET); |
|
} else |
#endif |
#endif |
if (in6p->in6p_flags & IN6P_RECVDSTADDR) { |
*mp = sbcreatecontrol((void *) &tv, sizeof(tv), |
*mp = sbcreatecontrol((caddr_t) &ip6->ip6_dst, |
SCM_TIMESTAMP, SOL_SOCKET); |
sizeof(struct in6_addr), IPV6_RECVDSTADDR, |
|
IPPROTO_IPV6); |
|
if (*mp) |
if (*mp) |
mp = &(*mp)->m_next; |
mp = &(*mp)->m_next; |
} |
} |
|
|
#ifdef noyet |
/* some OSes call this logic with IPv4 packet, for SO_TIMESTAMP */ |
/* options were tossed above */ |
if ((ip6->ip6_vfc & IPV6_VERSION_MASK) != IPV6_VERSION) |
if (in6p->in6p_flags & IN6P_RECVOPTS) |
return; |
/* broken */ |
|
/* ip6_srcroute doesn't do what we want here, need to fix */ |
|
if (in6p->in6p_flags & IPV6P_RECVRETOPTS) |
|
/* broken */ |
|
#endif |
|
|
|
/* RFC 2292 sec. 5 */ |
/* RFC 2292 sec. 5 */ |
if (in6p->in6p_flags & IN6P_PKTINFO) { |
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)); |
|
if (IN6_IS_SCOPE_LINKLOCAL(&pi6.ipi6_addr)) |
memcpy(&pi6.ipi6_addr, &ip6->ip6_dst, sizeof(struct in6_addr)); |
pi6.ipi6_addr.s6_addr16[1] = 0; |
in6_clearscope(&pi6.ipi6_addr); /* XXX */ |
pi6.ipi6_ifindex = (m && m->m_pkthdr.rcvif) |
pi6.ipi6_ifindex = m->m_pkthdr.rcvif_index; |
? m->m_pkthdr.rcvif->if_index |
*mp = sbcreatecontrol((void *) &pi6, |
: 0; |
sizeof(struct in6_pktinfo), |
*mp = sbcreatecontrol((caddr_t) &pi6, |
IS2292(IPV6_2292PKTINFO, IPV6_PKTINFO), IPPROTO_IPV6); |
sizeof(struct in6_pktinfo), IPV6_PKTINFO, |
|
IPPROTO_IPV6); |
|
if (*mp) |
if (*mp) |
mp = &(*mp)->m_next; |
mp = &(*mp)->m_next; |
} |
} |
|
|
if (in6p->in6p_flags & IN6P_HOPLIMIT) { |
if (in6p->in6p_flags & IN6P_HOPLIMIT) { |
int hlim = ip6->ip6_hlim & 0xff; |
int hlim = ip6->ip6_hlim & 0xff; |
*mp = sbcreatecontrol((caddr_t) &hlim, |
|
sizeof(int), IPV6_HOPLIMIT, IPPROTO_IPV6); |
*mp = sbcreatecontrol((void *) &hlim, sizeof(int), |
|
IS2292(IPV6_2292HOPLIMIT, IPV6_HOPLIMIT), IPPROTO_IPV6); |
|
if (*mp) |
|
mp = &(*mp)->m_next; |
|
} |
|
|
|
if ((in6p->in6p_flags & IN6P_TCLASS) != 0) { |
|
u_int32_t flowinfo; |
|
int tclass; |
|
|
|
flowinfo = (u_int32_t)ntohl(ip6->ip6_flow & IPV6_FLOWINFO_MASK); |
|
flowinfo >>= 20; |
|
|
|
tclass = flowinfo & 0xff; |
|
*mp = sbcreatecontrol((void *)&tclass, sizeof(tclass), |
|
IPV6_TCLASS, IPPROTO_IPV6); |
|
|
if (*mp) |
if (*mp) |
mp = &(*mp)->m_next; |
mp = &(*mp)->m_next; |
} |
} |
/* IN6P_NEXTHOP - for outgoing packet only */ |
|
|
|
/* |
/* |
* IPV6_HOPOPTS socket option. We require super-user privilege |
* IPV6_HOPOPTS socket option. Recall that we required super-user |
* for the option, but it might be too strict, since there might |
* privilege for the option (see ip6_ctloutput), but it might be too |
* be some hop-by-hop options which can be returned to normal user. |
* strict, since there might be some hop-by-hop options which can be |
* See RFC 2292 section 6. |
* returned to normal user. |
|
* See also RFC3542 section 8 (or RFC2292 section 6). |
*/ |
*/ |
if ((in6p->in6p_flags & IN6P_HOPOPTS) && privileged) { |
if ((in6p->in6p_flags & IN6P_HOPOPTS) != 0) { |
/* |
/* |
* 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 995 ip6_savecontrol(in6p, mp, ip6, m) |
|
Line 1111 ip6_savecontrol(in6p, mp, ip6, m) |
|
* just after the IPv6 header, which fact is assured through |
* just after the IPv6 header, which fact is assured through |
* the IPv6 input processing. |
* the IPv6 input processing. |
*/ |
*/ |
struct ip6_hdr *ip6 = mtod(m, struct ip6_hdr *); |
struct ip6_hdr *xip6 = mtod(m, struct ip6_hdr *); |
if (ip6->ip6_nxt == IPPROTO_HOPOPTS) { |
if (xip6->ip6_nxt == IPPROTO_HOPOPTS) { |
struct ip6_hbh *hbh; |
struct ip6_hbh *hbh; |
int hbhlen; |
int hbhlen; |
|
struct mbuf *ext; |
|
|
#ifndef PULLDOWN_TEST |
ext = ip6_pullexthdr(m, sizeof(struct ip6_hdr), |
hbh = (struct ip6_hbh *)(ip6 + 1); |
xip6->ip6_nxt); |
hbhlen = (hbh->ip6h_len + 1) << 3; |
if (ext == NULL) { |
#else |
IP6_STATINC(IP6_STAT_TOOSHORT); |
IP6_EXTHDR_GET(hbh, struct ip6_hbh *, m, |
|
sizeof(struct ip6_hdr), sizeof(struct ip6_hbh)); |
|
if (hbh == NULL) { |
|
ip6stat.ip6s_tooshort++; |
|
return; |
return; |
} |
} |
|
hbh = mtod(ext, struct ip6_hbh *); |
hbhlen = (hbh->ip6h_len + 1) << 3; |
hbhlen = (hbh->ip6h_len + 1) << 3; |
IP6_EXTHDR_GET(hbh, struct ip6_hbh *, m, |
if (hbhlen != ext->m_len) { |
sizeof(struct ip6_hdr), hbhlen); |
m_freem(ext); |
if (hbh == NULL) { |
IP6_STATINC(IP6_STAT_TOOSHORT); |
ip6stat.ip6s_tooshort++; |
|
return; |
return; |
} |
} |
#endif |
|
|
|
/* |
/* |
* XXX: We copy whole the header even if a jumbo |
* XXX: We copy whole the header even if a jumbo |
* payload option is included, which option is to |
* payload option is included, which option is to |
* be removed before returning in the RFC 2292. |
* be removed before returning in the RFC 2292. |
* But it's too painful operation... |
* Note: this constraint is removed in RFC3542. |
*/ |
*/ |
*mp = sbcreatecontrol((caddr_t)hbh, hbhlen, |
*mp = sbcreatecontrol((void *)hbh, hbhlen, |
IPV6_HOPOPTS, IPPROTO_IPV6); |
IS2292(IPV6_2292HOPOPTS, IPV6_HOPOPTS), |
|
IPPROTO_IPV6); |
if (*mp) |
if (*mp) |
mp = &(*mp)->m_next; |
mp = &(*mp)->m_next; |
|
m_freem(ext); |
} |
} |
} |
} |
|
|
/* IPV6_DSTOPTS and IPV6_RTHDR socket options */ |
/* IPV6_DSTOPTS and IPV6_RTHDR socket options */ |
if (in6p->in6p_flags & (IN6P_DSTOPTS | IN6P_RTHDR)) { |
if (in6p->in6p_flags & (IN6P_DSTOPTS | IN6P_RTHDR)) { |
struct ip6_hdr *ip6 = mtod(m, struct ip6_hdr *); |
struct ip6_hdr *xip6 = mtod(m, struct ip6_hdr *); |
int nxt = ip6->ip6_nxt, off = sizeof(struct ip6_hdr);; |
int nxt = xip6->ip6_nxt, off = sizeof(struct ip6_hdr); |
|
|
/* |
/* |
* Search for destination options headers or routing |
* Search for destination options headers or routing |
Line 1044 ip6_savecontrol(in6p, mp, ip6, m) |
|
Line 1158 ip6_savecontrol(in6p, mp, ip6, m) |
|
* Note that the order of the headers remains in |
* Note that the order of the headers remains in |
* the chain of ancillary data. |
* the chain of ancillary data. |
*/ |
*/ |
while(1) { /* is explicit loop prevention necessary? */ |
for (;;) { /* is explicit loop prevention necessary? */ |
struct ip6_ext *ip6e; |
struct ip6_ext *ip6e = NULL; |
int elen; |
int elen; |
|
struct mbuf *ext = NULL; |
|
|
#ifndef PULLDOWN_TEST |
/* |
ip6e = (struct ip6_ext *)(mtod(m, caddr_t) + off); |
* if it is not an extension header, don't try to |
if (nxt == IPPROTO_AH) |
* pull it from the chain. |
elen = (ip6e->ip6e_len + 2) << 2; |
*/ |
else |
switch (nxt) { |
elen = (ip6e->ip6e_len + 1) << 3; |
case IPPROTO_DSTOPTS: |
#else |
case IPPROTO_ROUTING: |
IP6_EXTHDR_GET(ip6e, struct ip6_ext *, m, off, |
case IPPROTO_HOPOPTS: |
sizeof(struct ip6_ext)); |
case IPPROTO_AH: /* is it possible? */ |
if (ip6e == NULL) { |
break; |
ip6stat.ip6s_tooshort++; |
default: |
|
goto loopend; |
|
} |
|
|
|
ext = ip6_pullexthdr(m, off, nxt); |
|
if (ext == NULL) { |
|
IP6_STATINC(IP6_STAT_TOOSHORT); |
return; |
return; |
} |
} |
|
ip6e = mtod(ext, struct ip6_ext *); |
if (nxt == IPPROTO_AH) |
if (nxt == IPPROTO_AH) |
elen = (ip6e->ip6e_len + 2) << 2; |
elen = (ip6e->ip6e_len + 2) << 2; |
else |
else |
elen = (ip6e->ip6e_len + 1) << 3; |
elen = (ip6e->ip6e_len + 1) << 3; |
IP6_EXTHDR_GET(ip6e, struct ip6_ext *, m, off, elen); |
if (elen != ext->m_len) { |
if (ip6e == NULL) { |
m_freem(ext); |
ip6stat.ip6s_tooshort++; |
IP6_STATINC(IP6_STAT_TOOSHORT); |
return; |
return; |
} |
} |
#endif |
KASSERT(IP6_HDR_ALIGNED_P(ip6e)); |
|
|
|
switch (nxt) { |
|
case IPPROTO_DSTOPTS: |
|
if (!(in6p->in6p_flags & IN6P_DSTOPTS)) |
|
break; |
|
|
|
*mp = sbcreatecontrol((void *)ip6e, elen, |
|
IS2292(IPV6_2292DSTOPTS, IPV6_DSTOPTS), |
|
IPPROTO_IPV6); |
|
if (*mp) |
|
mp = &(*mp)->m_next; |
|
break; |
|
|
|
case IPPROTO_ROUTING: |
|
if (!(in6p->in6p_flags & IN6P_RTHDR)) |
|
break; |
|
|
|
*mp = sbcreatecontrol((void *)ip6e, elen, |
|
IS2292(IPV6_2292RTHDR, IPV6_RTHDR), |
|
IPPROTO_IPV6); |
|
if (*mp) |
|
mp = &(*mp)->m_next; |
|
break; |
|
|
|
case IPPROTO_HOPOPTS: |
|
case IPPROTO_AH: /* is it possible? */ |
|
break; |
|
|
|
default: |
|
/* |
|
* other cases have been filtered in the above. |
|
* none will visit this case. here we supply |
|
* the code just in case (nxt overwritten or |
|
* other cases). |
|
*/ |
|
m_freem(ext); |
|
goto loopend; |
|
|
switch(nxt) { |
|
case IPPROTO_DSTOPTS: |
|
if (!in6p->in6p_flags & IN6P_DSTOPTS) |
|
break; |
|
|
|
/* |
|
* We also require super-user privilege for |
|
* the option. |
|
* See the comments on IN6_HOPOPTS. |
|
*/ |
|
if (!privileged) |
|
break; |
|
|
|
*mp = sbcreatecontrol((caddr_t)ip6e, elen, |
|
IPV6_DSTOPTS, |
|
IPPROTO_IPV6); |
|
if (*mp) |
|
mp = &(*mp)->m_next; |
|
break; |
|
|
|
case IPPROTO_ROUTING: |
|
if (!in6p->in6p_flags & IN6P_RTHDR) |
|
break; |
|
|
|
*mp = sbcreatecontrol((caddr_t)ip6e, elen, |
|
IPV6_RTHDR, |
|
IPPROTO_IPV6); |
|
if (*mp) |
|
mp = &(*mp)->m_next; |
|
break; |
|
|
|
case IPPROTO_UDP: |
|
case IPPROTO_TCP: |
|
case IPPROTO_ICMPV6: |
|
default: |
|
/* |
|
* stop search if we encounter an upper |
|
* layer protocol headers. |
|
*/ |
|
goto loopend; |
|
|
|
case IPPROTO_HOPOPTS: |
|
case IPPROTO_AH: /* is it possible? */ |
|
break; |
|
} |
} |
|
|
/* proceed with the next header. */ |
/* proceed with the next header. */ |
off += elen; |
off += elen; |
nxt = ip6e->ip6e_nxt; |
nxt = ip6e->ip6e_nxt; |
|
ip6e = NULL; |
|
m_freem(ext); |
|
ext = NULL; |
} |
} |
loopend: |
loopend: |
|
; |
|
} |
|
} |
|
#undef IS2292 |
|
|
|
|
|
void |
|
ip6_notify_pmtu(struct in6pcb *in6p, const struct sockaddr_in6 *dst, |
|
uint32_t *mtu) |
|
{ |
|
struct socket *so; |
|
struct mbuf *m_mtu; |
|
struct ip6_mtuinfo mtuctl; |
|
|
|
so = in6p->in6p_socket; |
|
|
|
if (mtu == NULL) |
|
return; |
|
|
|
#ifdef DIAGNOSTIC |
|
if (so == NULL) /* I believe this is impossible */ |
|
panic("ip6_notify_pmtu: socket is NULL"); |
|
#endif |
|
|
|
memset(&mtuctl, 0, sizeof(mtuctl)); /* zero-clear for safety */ |
|
mtuctl.ip6m_mtu = *mtu; |
|
mtuctl.ip6m_addr = *dst; |
|
if (sa6_recoverscope(&mtuctl.ip6m_addr)) |
|
return; |
|
|
|
if ((m_mtu = sbcreatecontrol((void *)&mtuctl, sizeof(mtuctl), |
|
IPV6_PATHMTU, IPPROTO_IPV6)) == NULL) |
|
return; |
|
|
|
if (sbappendaddr(&so->so_rcv, (const struct sockaddr *)dst, NULL, m_mtu) |
|
== 0) { |
|
m_freem(m_mtu); |
|
/* XXX: should count statistics */ |
|
} else |
|
sorwakeup(so); |
|
|
|
return; |
|
} |
|
|
|
/* |
|
* pull single extension header from mbuf chain. returns single mbuf that |
|
* contains the result, or NULL on error. |
|
*/ |
|
static struct mbuf * |
|
ip6_pullexthdr(struct mbuf *m, size_t off, int nxt) |
|
{ |
|
struct ip6_ext ip6e; |
|
size_t elen; |
|
struct mbuf *n; |
|
|
|
#ifdef DIAGNOSTIC |
|
switch (nxt) { |
|
case IPPROTO_DSTOPTS: |
|
case IPPROTO_ROUTING: |
|
case IPPROTO_HOPOPTS: |
|
case IPPROTO_AH: /* is it possible? */ |
|
break; |
|
default: |
|
printf("ip6_pullexthdr: invalid nxt=%d\n", nxt); |
} |
} |
if ((in6p->in6p_flags & IN6P_HOPOPTS) && privileged) { |
#endif |
/* to be done */ |
|
|
m_copydata(m, off, sizeof(ip6e), (void *)&ip6e); |
|
if (nxt == IPPROTO_AH) |
|
elen = (ip6e.ip6e_len + 2) << 2; |
|
else |
|
elen = (ip6e.ip6e_len + 1) << 3; |
|
|
|
MGET(n, M_DONTWAIT, MT_DATA); |
|
if (n && elen >= MLEN) { |
|
MCLGET(n, M_DONTWAIT); |
|
if ((n->m_flags & M_EXT) == 0) { |
|
m_free(n); |
|
n = NULL; |
|
} |
} |
} |
if ((in6p->in6p_flags & IN6P_DSTOPTS) && privileged) { |
if (!n) |
/* to be done */ |
return NULL; |
|
|
|
n->m_len = 0; |
|
if (elen >= M_TRAILINGSPACE(n)) { |
|
m_free(n); |
|
return NULL; |
} |
} |
/* IN6P_RTHDR - to be done */ |
|
|
|
|
m_copydata(m, off, elen, mtod(n, void *)); |
|
n->m_len = elen; |
|
return n; |
} |
} |
|
|
/* |
/* |
Line 1146 ip6_savecontrol(in6p, mp, ip6, m) |
|
Line 1348 ip6_savecontrol(in6p, mp, ip6, m) |
|
* carefully. Moreover, it will not be used in the near future when |
* carefully. Moreover, it will not be used in the near future when |
* we develop `neater' mechanism to process extension headers. |
* we develop `neater' mechanism to process extension headers. |
*/ |
*/ |
char * |
u_int8_t * |
ip6_get_prevhdr(m, off) |
ip6_get_prevhdr(struct mbuf *m, int off) |
struct mbuf *m; |
|
int off; |
|
{ |
{ |
struct ip6_hdr *ip6 = mtod(m, struct ip6_hdr *); |
struct ip6_hdr *ip6 = mtod(m, struct ip6_hdr *); |
|
|
if (off == sizeof(struct ip6_hdr)) |
if (off == sizeof(struct ip6_hdr)) |
return(&ip6->ip6_nxt); |
return (&ip6->ip6_nxt); |
else { |
else { |
int len, nxt; |
int len, nxt; |
struct ip6_ext *ip6e = NULL; |
struct ip6_ext *ip6e = NULL; |
Line 1162 ip6_get_prevhdr(m, off) |
|
Line 1362 ip6_get_prevhdr(m, off) |
|
nxt = ip6->ip6_nxt; |
nxt = ip6->ip6_nxt; |
len = sizeof(struct ip6_hdr); |
len = sizeof(struct ip6_hdr); |
while (len < off) { |
while (len < off) { |
ip6e = (struct ip6_ext *)(mtod(m, caddr_t) + len); |
ip6e = (struct ip6_ext *)(mtod(m, char *) + len); |
|
|
switch(nxt) { |
switch (nxt) { |
case IPPROTO_FRAGMENT: |
case IPPROTO_FRAGMENT: |
len += sizeof(struct ip6_frag); |
len += sizeof(struct ip6_frag); |
break; |
break; |
Line 1178 ip6_get_prevhdr(m, off) |
|
Line 1378 ip6_get_prevhdr(m, off) |
|
nxt = ip6e->ip6e_nxt; |
nxt = ip6e->ip6e_nxt; |
} |
} |
if (ip6e) |
if (ip6e) |
return(&ip6e->ip6e_nxt); |
return (&ip6e->ip6e_nxt); |
else |
else |
return NULL; |
return NULL; |
} |
} |
Line 1188 ip6_get_prevhdr(m, off) |
|
Line 1388 ip6_get_prevhdr(m, off) |
|
* get next header offset. m will be retained. |
* get next header offset. m will be retained. |
*/ |
*/ |
int |
int |
ip6_nexthdr(m, off, proto, nxtp) |
ip6_nexthdr(struct mbuf *m, int off, int proto, int *nxtp) |
struct mbuf *m; |
|
int off; |
|
int proto; |
|
int *nxtp; |
|
{ |
{ |
struct ip6_hdr ip6; |
struct ip6_hdr ip6; |
struct ip6_ext ip6e; |
struct ip6_ext ip6e; |
Line 1206 ip6_nexthdr(m, off, proto, nxtp) |
|
Line 1402 ip6_nexthdr(m, off, proto, nxtp) |
|
|
|
switch (proto) { |
switch (proto) { |
case IPPROTO_IPV6: |
case IPPROTO_IPV6: |
|
/* do not chase beyond intermediate IPv6 headers */ |
|
if (off != 0) |
|
return -1; |
if (m->m_pkthdr.len < off + sizeof(ip6)) |
if (m->m_pkthdr.len < off + sizeof(ip6)) |
return -1; |
return -1; |
m_copydata(m, off, sizeof(ip6), (caddr_t)&ip6); |
m_copydata(m, off, sizeof(ip6), (void *)&ip6); |
if (nxtp) |
if (nxtp) |
*nxtp = ip6.ip6_nxt; |
*nxtp = ip6.ip6_nxt; |
off += sizeof(ip6); |
off += sizeof(ip6); |
Line 1221 ip6_nexthdr(m, off, proto, nxtp) |
|
Line 1420 ip6_nexthdr(m, off, proto, nxtp) |
|
*/ |
*/ |
if (m->m_pkthdr.len < off + sizeof(fh)) |
if (m->m_pkthdr.len < off + sizeof(fh)) |
return -1; |
return -1; |
m_copydata(m, off, sizeof(fh), (caddr_t)&fh); |
m_copydata(m, off, sizeof(fh), (void *)&fh); |
if ((ntohs(fh.ip6f_offlg) & IP6F_OFF_MASK) != 0) |
if ((fh.ip6f_offlg & IP6F_OFF_MASK) != 0) |
return -1; |
return -1; |
if (nxtp) |
if (nxtp) |
*nxtp = fh.ip6f_nxt; |
*nxtp = fh.ip6f_nxt; |
Line 1232 ip6_nexthdr(m, off, proto, nxtp) |
|
Line 1431 ip6_nexthdr(m, off, proto, nxtp) |
|
case IPPROTO_AH: |
case IPPROTO_AH: |
if (m->m_pkthdr.len < off + sizeof(ip6e)) |
if (m->m_pkthdr.len < off + sizeof(ip6e)) |
return -1; |
return -1; |
m_copydata(m, off, sizeof(ip6e), (caddr_t)&ip6e); |
m_copydata(m, off, sizeof(ip6e), (void *)&ip6e); |
if (nxtp) |
if (nxtp) |
*nxtp = ip6e.ip6e_nxt; |
*nxtp = ip6e.ip6e_nxt; |
off += (ip6e.ip6e_len + 2) << 2; |
off += (ip6e.ip6e_len + 2) << 2; |
|
if (m->m_pkthdr.len < off) |
|
return -1; |
return off; |
return off; |
|
|
case IPPROTO_HOPOPTS: |
case IPPROTO_HOPOPTS: |
Line 1243 ip6_nexthdr(m, off, proto, nxtp) |
|
Line 1444 ip6_nexthdr(m, off, proto, nxtp) |
|
case IPPROTO_DSTOPTS: |
case IPPROTO_DSTOPTS: |
if (m->m_pkthdr.len < off + sizeof(ip6e)) |
if (m->m_pkthdr.len < off + sizeof(ip6e)) |
return -1; |
return -1; |
m_copydata(m, off, sizeof(ip6e), (caddr_t)&ip6e); |
m_copydata(m, off, sizeof(ip6e), (void *)&ip6e); |
if (nxtp) |
if (nxtp) |
*nxtp = ip6e.ip6e_nxt; |
*nxtp = ip6e.ip6e_nxt; |
off += (ip6e.ip6e_len + 1) << 3; |
off += (ip6e.ip6e_len + 1) << 3; |
|
if (m->m_pkthdr.len < off) |
|
return -1; |
return off; |
return off; |
|
|
case IPPROTO_NONE: |
case IPPROTO_NONE: |
Line 1258 ip6_nexthdr(m, off, proto, nxtp) |
|
Line 1461 ip6_nexthdr(m, off, proto, nxtp) |
|
default: |
default: |
return -1; |
return -1; |
} |
} |
|
|
return -1; |
|
} |
} |
|
|
/* |
/* |
* get offset for the last header in the chain. m will be kept untainted. |
* get offset for the last header in the chain. m will be kept untainted. |
*/ |
*/ |
int |
int |
ip6_lasthdr(m, off, proto, nxtp) |
ip6_lasthdr(struct mbuf *m, int off, int proto, int *nxtp) |
struct mbuf *m; |
|
int off; |
|
int proto; |
|
int *nxtp; |
|
{ |
{ |
int newoff; |
int newoff; |
int nxt; |
int nxt; |
Line 1279 ip6_lasthdr(m, off, proto, nxtp) |
|
Line 1476 ip6_lasthdr(m, off, proto, nxtp) |
|
nxt = -1; |
nxt = -1; |
nxtp = &nxt; |
nxtp = &nxt; |
} |
} |
while (1) { |
for (;;) { |
newoff = ip6_nexthdr(m, off, proto, nxtp); |
newoff = ip6_nexthdr(m, off, proto, nxtp); |
if (newoff < 0) |
if (newoff < 0) |
return off; |
return off; |
Line 1293 ip6_lasthdr(m, off, proto, nxtp) |
|
Line 1490 ip6_lasthdr(m, off, proto, nxtp) |
|
} |
} |
} |
} |
|
|
|
struct m_tag * |
|
ip6_addaux(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); |
|
memset(mtag + 1, 0, sizeof(struct ip6aux)); |
|
} |
|
} |
|
return mtag; |
|
} |
|
|
|
struct m_tag * |
|
ip6_findaux(struct mbuf *m) |
|
{ |
|
struct m_tag *mtag; |
|
|
|
mtag = m_tag_find(m, PACKET_TAG_INET6, NULL); |
|
return mtag; |
|
} |
|
|
|
void |
|
ip6_delaux(struct mbuf *m) |
|
{ |
|
struct m_tag *mtag; |
|
|
|
mtag = m_tag_find(m, PACKET_TAG_INET6, NULL); |
|
if (mtag) |
|
m_tag_delete(m, mtag); |
|
} |
|
|
|
#ifdef GATEWAY |
|
/* |
|
* sysctl helper routine for net.inet.ip6.maxflows. Since |
|
* we could reduce this value, call ip6flow_reap(); |
|
*/ |
|
static int |
|
sysctl_net_inet6_ip6_maxflows(SYSCTLFN_ARGS) |
|
{ |
|
int error; |
|
|
|
error = sysctl_lookup(SYSCTLFN_CALL(rnode)); |
|
if (error || newp == NULL) |
|
return (error); |
|
|
|
mutex_enter(softnet_lock); |
|
KERNEL_LOCK(1, NULL); |
|
|
|
ip6flow_reap(0); |
|
|
|
KERNEL_UNLOCK_ONE(NULL); |
|
mutex_exit(softnet_lock); |
|
|
|
return (0); |
|
} |
|
|
|
static int |
|
sysctl_net_inet6_ip6_hashsize(SYSCTLFN_ARGS) |
|
{ |
|
int error, tmp; |
|
struct sysctlnode node; |
|
|
|
node = *rnode; |
|
tmp = ip6_hashsize; |
|
node.sysctl_data = &tmp; |
|
error = sysctl_lookup(SYSCTLFN_CALL(&node)); |
|
if (error || newp == NULL) |
|
return (error); |
|
|
|
if ((tmp & (tmp - 1)) == 0 && tmp != 0) { |
|
/* |
|
* Can only fail due to malloc() |
|
*/ |
|
mutex_enter(softnet_lock); |
|
KERNEL_LOCK(1, NULL); |
|
|
|
error = ip6flow_invalidate_all(tmp); |
|
|
|
KERNEL_UNLOCK_ONE(NULL); |
|
mutex_exit(softnet_lock); |
|
} else { |
|
/* |
|
* EINVAL if not a power of 2 |
|
*/ |
|
error = EINVAL; |
|
} |
|
|
|
return error; |
|
} |
|
#endif /* GATEWAY */ |
|
|
/* |
/* |
* System control for IP6 |
* System control for IP6 |
*/ |
*/ |
|
|
u_char inet6ctlerrmap[PRC_NCMDS] = { |
const u_char inet6ctlerrmap[PRC_NCMDS] = { |
0, 0, 0, 0, |
0, 0, 0, 0, |
0, EMSGSIZE, EHOSTDOWN, EHOSTUNREACH, |
0, EMSGSIZE, EHOSTDOWN, EHOSTUNREACH, |
EHOSTUNREACH, EHOSTUNREACH, ECONNREFUSED, ECONNREFUSED, |
EHOSTUNREACH, EHOSTUNREACH, ECONNREFUSED, ECONNREFUSED, |
Line 1306 u_char inet6ctlerrmap[PRC_NCMDS] = { |
|
Line 1599 u_char inet6ctlerrmap[PRC_NCMDS] = { |
|
ENOPROTOOPT |
ENOPROTOOPT |
}; |
}; |
|
|
#include <vm/vm.h> |
extern int sysctl_net_inet6_addrctlpolicy(SYSCTLFN_ARGS); |
#include <sys/sysctl.h> |
|
|
|
int |
static int |
ip6_sysctl(name, namelen, oldp, oldlenp, newp, newlen) |
sysctl_net_inet6_ip6_stats(SYSCTLFN_ARGS) |
int *name; |
{ |
u_int namelen; |
|
void *oldp; |
return (NETSTAT_SYSCTL(ip6stat_percpu, IP6_NSTATS)); |
size_t *oldlenp; |
} |
void *newp; |
|
size_t newlen; |
static void |
{ |
sysctl_net_inet6_ip6_setup(struct sysctllog **clog) |
/* All sysctl names at this level are terminal. */ |
{ |
if (namelen != 1) |
#ifdef RFC2292 |
return ENOTDIR; |
#define IS2292(x, y) ((in6p->in6p_flags & IN6P_RFC2292) ? (x) : (y)) |
|
#else |
switch (name[0]) { |
#define IS2292(x, y) (y) |
|
#endif |
case IPV6CTL_FORWARDING: |
|
return sysctl_int(oldp, oldlenp, newp, newlen, |
sysctl_createv(clog, 0, NULL, NULL, |
&ip6_forwarding); |
CTLFLAG_PERMANENT, |
case IPV6CTL_SENDREDIRECTS: |
CTLTYPE_NODE, "inet6", |
return sysctl_int(oldp, oldlenp, newp, newlen, |
SYSCTL_DESCR("PF_INET6 related settings"), |
&ip6_sendredirects); |
NULL, 0, NULL, 0, |
case IPV6CTL_DEFHLIM: |
CTL_NET, PF_INET6, CTL_EOL); |
return sysctl_int(oldp, oldlenp, newp, newlen, &ip6_defhlim); |
sysctl_createv(clog, 0, NULL, NULL, |
case IPV6CTL_MAXFRAGPACKETS: |
CTLFLAG_PERMANENT, |
return sysctl_int(oldp, oldlenp, newp, newlen, |
CTLTYPE_NODE, "ip6", |
&ip6_maxfragpackets); |
SYSCTL_DESCR("IPv6 related settings"), |
case IPV6CTL_ACCEPT_RTADV: |
NULL, 0, NULL, 0, |
return sysctl_int(oldp, oldlenp, newp, newlen, |
CTL_NET, PF_INET6, IPPROTO_IPV6, CTL_EOL); |
&ip6_accept_rtadv); |
|
case IPV6CTL_KEEPFAITH: |
sysctl_createv(clog, 0, NULL, NULL, |
return sysctl_int(oldp, oldlenp, newp, newlen, &ip6_keepfaith); |
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
case IPV6CTL_LOG_INTERVAL: |
CTLTYPE_INT, "forwarding", |
return sysctl_int(oldp, oldlenp, newp, newlen, |
SYSCTL_DESCR("Enable forwarding of INET6 datagrams"), |
&ip6_log_interval); |
NULL, 0, &ip6_forwarding, 0, |
case IPV6CTL_HDRNESTLIMIT: |
CTL_NET, PF_INET6, IPPROTO_IPV6, |
return sysctl_int(oldp, oldlenp, newp, newlen, |
IPV6CTL_FORWARDING, CTL_EOL); |
&ip6_hdrnestlimit); |
sysctl_createv(clog, 0, NULL, NULL, |
case IPV6CTL_DAD_COUNT: |
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
return sysctl_int(oldp, oldlenp, newp, newlen, &ip6_dad_count); |
CTLTYPE_INT, "redirect", |
case IPV6CTL_AUTO_FLOWLABEL: |
SYSCTL_DESCR("Enable sending of ICMPv6 redirect messages"), |
return sysctl_int(oldp, oldlenp, newp, newlen, |
NULL, 0, &ip6_sendredirects, 0, |
&ip6_auto_flowlabel); |
CTL_NET, PF_INET6, IPPROTO_IPV6, |
case IPV6CTL_DEFMCASTHLIM: |
IPV6CTL_SENDREDIRECTS, CTL_EOL); |
return sysctl_int(oldp, oldlenp, newp, newlen, |
sysctl_createv(clog, 0, NULL, NULL, |
&ip6_defmcasthlim); |
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
case IPV6CTL_GIF_HLIM: |
CTLTYPE_INT, "hlim", |
return sysctl_int(oldp, oldlenp, newp, newlen, |
SYSCTL_DESCR("Hop limit for an INET6 datagram"), |
&ip6_gif_hlim); |
NULL, 0, &ip6_defhlim, 0, |
case IPV6CTL_KAME_VERSION: |
CTL_NET, PF_INET6, IPPROTO_IPV6, |
return sysctl_rdstring(oldp, oldlenp, newp, __KAME_VERSION); |
IPV6CTL_DEFHLIM, CTL_EOL); |
case IPV6CTL_USE_DEPRECATED: |
#ifdef notyet |
return sysctl_int(oldp, oldlenp, newp, newlen, |
sysctl_createv(clog, 0, NULL, NULL, |
&ip6_use_deprecated); |
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
case IPV6CTL_RR_PRUNE: |
CTLTYPE_INT, "mtu", NULL, |
return sysctl_int(oldp, oldlenp, newp, newlen, &ip6_rr_prune); |
NULL, 0, &, 0, |
|
CTL_NET, PF_INET6, IPPROTO_IPV6, |
|
IPV6CTL_DEFMTU, CTL_EOL); |
|
#endif |
|
#ifdef __no_idea__ |
|
sysctl_createv(clog, 0, NULL, NULL, |
|
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
|
CTLTYPE_INT, "forwsrcrt", NULL, |
|
NULL, 0, &?, 0, |
|
CTL_NET, PF_INET6, IPPROTO_IPV6, |
|
IPV6CTL_FORWSRCRT, CTL_EOL); |
|
sysctl_createv(clog, 0, NULL, NULL, |
|
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
|
CTLTYPE_STRUCT, "mrtstats", NULL, |
|
NULL, 0, &?, sizeof(?), |
|
CTL_NET, PF_INET6, IPPROTO_IPV6, |
|
IPV6CTL_MRTSTATS, CTL_EOL); |
|
sysctl_createv(clog, 0, NULL, NULL, |
|
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
|
CTLTYPE_?, "mrtproto", NULL, |
|
NULL, 0, &?, sizeof(?), |
|
CTL_NET, PF_INET6, IPPROTO_IPV6, |
|
IPV6CTL_MRTPROTO, CTL_EOL); |
|
#endif |
|
sysctl_createv(clog, 0, NULL, NULL, |
|
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
|
CTLTYPE_INT, "maxfragpackets", |
|
SYSCTL_DESCR("Maximum number of fragments to buffer " |
|
"for reassembly"), |
|
NULL, 0, &ip6_maxfragpackets, 0, |
|
CTL_NET, PF_INET6, IPPROTO_IPV6, |
|
IPV6CTL_MAXFRAGPACKETS, CTL_EOL); |
|
#ifdef __no_idea__ |
|
sysctl_createv(clog, 0, NULL, NULL, |
|
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
|
CTLTYPE_INT, "sourcecheck", NULL, |
|
NULL, 0, &?, 0, |
|
CTL_NET, PF_INET6, IPPROTO_IPV6, |
|
IPV6CTL_SOURCECHECK, CTL_EOL); |
|
sysctl_createv(clog, 0, NULL, NULL, |
|
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
|
CTLTYPE_INT, "sourcecheck_logint", NULL, |
|
NULL, 0, &?, 0, |
|
CTL_NET, PF_INET6, IPPROTO_IPV6, |
|
IPV6CTL_SOURCECHECK_LOGINT, CTL_EOL); |
|
#endif |
|
sysctl_createv(clog, 0, NULL, NULL, |
|
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
|
CTLTYPE_INT, "accept_rtadv", |
|
SYSCTL_DESCR("Accept router advertisements"), |
|
NULL, 0, &ip6_accept_rtadv, 0, |
|
CTL_NET, PF_INET6, IPPROTO_IPV6, |
|
IPV6CTL_ACCEPT_RTADV, CTL_EOL); |
|
sysctl_createv(clog, 0, NULL, NULL, |
|
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
|
CTLTYPE_INT, "rtadv_maxroutes", |
|
SYSCTL_DESCR("Maximum number of routes accepted via router advertisements"), |
|
NULL, 0, &ip6_rtadv_maxroutes, 0, |
|
CTL_NET, PF_INET6, IPPROTO_IPV6, |
|
IPV6CTL_RTADV_MAXROUTES, CTL_EOL); |
|
sysctl_createv(clog, 0, NULL, NULL, |
|
CTLFLAG_PERMANENT, |
|
CTLTYPE_INT, "rtadv_numroutes", |
|
SYSCTL_DESCR("Current number of routes accepted via router advertisements"), |
|
NULL, 0, &nd6_numroutes, 0, |
|
CTL_NET, PF_INET6, IPPROTO_IPV6, |
|
IPV6CTL_RTADV_NUMROUTES, CTL_EOL); |
|
sysctl_createv(clog, 0, NULL, NULL, |
|
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
|
CTLTYPE_INT, "keepfaith", |
|
SYSCTL_DESCR("Activate faith interface"), |
|
NULL, 0, &ip6_keepfaith, 0, |
|
CTL_NET, PF_INET6, IPPROTO_IPV6, |
|
IPV6CTL_KEEPFAITH, CTL_EOL); |
|
sysctl_createv(clog, 0, NULL, NULL, |
|
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
|
CTLTYPE_INT, "log_interval", |
|
SYSCTL_DESCR("Minumum interval between logging " |
|
"unroutable packets"), |
|
NULL, 0, &ip6_log_interval, 0, |
|
CTL_NET, PF_INET6, IPPROTO_IPV6, |
|
IPV6CTL_LOG_INTERVAL, CTL_EOL); |
|
sysctl_createv(clog, 0, NULL, NULL, |
|
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
|
CTLTYPE_INT, "hdrnestlimit", |
|
SYSCTL_DESCR("Maximum number of nested IPv6 headers"), |
|
NULL, 0, &ip6_hdrnestlimit, 0, |
|
CTL_NET, PF_INET6, IPPROTO_IPV6, |
|
IPV6CTL_HDRNESTLIMIT, CTL_EOL); |
|
sysctl_createv(clog, 0, NULL, NULL, |
|
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
|
CTLTYPE_INT, "dad_count", |
|
SYSCTL_DESCR("Number of Duplicate Address Detection " |
|
"probes to send"), |
|
NULL, 0, &ip6_dad_count, 0, |
|
CTL_NET, PF_INET6, IPPROTO_IPV6, |
|
IPV6CTL_DAD_COUNT, CTL_EOL); |
|
sysctl_createv(clog, 0, NULL, NULL, |
|
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
|
CTLTYPE_INT, "auto_flowlabel", |
|
SYSCTL_DESCR("Assign random IPv6 flow labels"), |
|
NULL, 0, &ip6_auto_flowlabel, 0, |
|
CTL_NET, PF_INET6, IPPROTO_IPV6, |
|
IPV6CTL_AUTO_FLOWLABEL, CTL_EOL); |
|
sysctl_createv(clog, 0, NULL, NULL, |
|
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
|
CTLTYPE_INT, "defmcasthlim", |
|
SYSCTL_DESCR("Default multicast hop limit"), |
|
NULL, 0, &ip6_defmcasthlim, 0, |
|
CTL_NET, PF_INET6, IPPROTO_IPV6, |
|
IPV6CTL_DEFMCASTHLIM, CTL_EOL); |
|
sysctl_createv(clog, 0, NULL, NULL, |
|
CTLFLAG_PERMANENT, |
|
CTLTYPE_STRING, "kame_version", |
|
SYSCTL_DESCR("KAME Version"), |
|
NULL, 0, __UNCONST(__KAME_VERSION), 0, |
|
CTL_NET, PF_INET6, IPPROTO_IPV6, |
|
IPV6CTL_KAME_VERSION, CTL_EOL); |
|
sysctl_createv(clog, 0, NULL, NULL, |
|
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
|
CTLTYPE_INT, "use_deprecated", |
|
SYSCTL_DESCR("Allow use of deprecated addresses as " |
|
"source addresses"), |
|
NULL, 0, &ip6_use_deprecated, 0, |
|
CTL_NET, PF_INET6, IPPROTO_IPV6, |
|
IPV6CTL_USE_DEPRECATED, CTL_EOL); |
|
sysctl_createv(clog, 0, NULL, NULL, |
|
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
|
CTLTYPE_INT, "rr_prune", NULL, |
|
NULL, 0, &ip6_rr_prune, 0, |
|
CTL_NET, PF_INET6, IPPROTO_IPV6, |
|
IPV6CTL_RR_PRUNE, CTL_EOL); |
|
sysctl_createv(clog, 0, NULL, NULL, |
|
CTLFLAG_PERMANENT |
#ifndef INET6_BINDV6ONLY |
#ifndef INET6_BINDV6ONLY |
case IPV6CTL_BINDV6ONLY: |
|CTLFLAG_READWRITE, |
return sysctl_int(oldp, oldlenp, newp, newlen, |
|
&ip6_bindv6only); |
|
#endif |
#endif |
default: |
CTLTYPE_INT, "v6only", |
return EOPNOTSUPP; |
SYSCTL_DESCR("Disallow PF_INET6 sockets from connecting " |
} |
"to PF_INET sockets"), |
/* NOTREACHED */ |
NULL, 0, &ip6_v6only, 0, |
|
CTL_NET, PF_INET6, IPPROTO_IPV6, |
|
IPV6CTL_V6ONLY, CTL_EOL); |
|
sysctl_createv(clog, 0, NULL, NULL, |
|
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
|
CTLTYPE_INT, "anonportmin", |
|
SYSCTL_DESCR("Lowest ephemeral port number to assign"), |
|
sysctl_net_inet_ip_ports, 0, &ip6_anonportmin, 0, |
|
CTL_NET, PF_INET6, IPPROTO_IPV6, |
|
IPV6CTL_ANONPORTMIN, CTL_EOL); |
|
sysctl_createv(clog, 0, NULL, NULL, |
|
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
|
CTLTYPE_INT, "anonportmax", |
|
SYSCTL_DESCR("Highest ephemeral port number to assign"), |
|
sysctl_net_inet_ip_ports, 0, &ip6_anonportmax, 0, |
|
CTL_NET, PF_INET6, IPPROTO_IPV6, |
|
IPV6CTL_ANONPORTMAX, CTL_EOL); |
|
#ifndef IPNOPRIVPORTS |
|
sysctl_createv(clog, 0, NULL, NULL, |
|
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
|
CTLTYPE_INT, "lowportmin", |
|
SYSCTL_DESCR("Lowest privileged ephemeral port number " |
|
"to assign"), |
|
sysctl_net_inet_ip_ports, 0, &ip6_lowportmin, 0, |
|
CTL_NET, PF_INET6, IPPROTO_IPV6, |
|
IPV6CTL_LOWPORTMIN, CTL_EOL); |
|
sysctl_createv(clog, 0, NULL, NULL, |
|
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
|
CTLTYPE_INT, "lowportmax", |
|
SYSCTL_DESCR("Highest privileged ephemeral port number " |
|
"to assign"), |
|
sysctl_net_inet_ip_ports, 0, &ip6_lowportmax, 0, |
|
CTL_NET, PF_INET6, IPPROTO_IPV6, |
|
IPV6CTL_LOWPORTMAX, CTL_EOL); |
|
#endif /* IPNOPRIVPORTS */ |
|
sysctl_createv(clog, 0, NULL, NULL, |
|
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
|
CTLTYPE_INT, "auto_linklocal", |
|
SYSCTL_DESCR("Default value of per-interface flag for " |
|
"adding an IPv6 link-local address to " |
|
"interfaces when attached"), |
|
NULL, 0, &ip6_auto_linklocal, 0, |
|
CTL_NET, PF_INET6, IPPROTO_IPV6, |
|
IPV6CTL_AUTO_LINKLOCAL, CTL_EOL); |
|
sysctl_createv(clog, 0, NULL, NULL, |
|
CTLFLAG_PERMANENT|CTLFLAG_READONLY, |
|
CTLTYPE_STRUCT, "addctlpolicy", |
|
SYSCTL_DESCR("Return the current address control" |
|
" policy"), |
|
sysctl_net_inet6_addrctlpolicy, 0, NULL, 0, |
|
CTL_NET, PF_INET6, IPPROTO_IPV6, |
|
IPV6CTL_ADDRCTLPOLICY, CTL_EOL); |
|
sysctl_createv(clog, 0, NULL, NULL, |
|
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
|
CTLTYPE_INT, "use_tempaddr", |
|
SYSCTL_DESCR("Use temporary address"), |
|
NULL, 0, &ip6_use_tempaddr, 0, |
|
CTL_NET, PF_INET6, IPPROTO_IPV6, |
|
CTL_CREATE, CTL_EOL); |
|
sysctl_createv(clog, 0, NULL, NULL, |
|
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
|
CTLTYPE_INT, "prefer_tempaddr", |
|
SYSCTL_DESCR("Prefer temporary address as source " |
|
"address"), |
|
NULL, 0, &ip6_prefer_tempaddr, 0, |
|
CTL_NET, PF_INET6, IPPROTO_IPV6, |
|
CTL_CREATE, CTL_EOL); |
|
sysctl_createv(clog, 0, NULL, NULL, |
|
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
|
CTLTYPE_INT, "temppltime", |
|
SYSCTL_DESCR("preferred lifetime of a temporary address"), |
|
NULL, 0, &ip6_temp_preferred_lifetime, 0, |
|
CTL_NET, PF_INET6, IPPROTO_IPV6, |
|
CTL_CREATE, CTL_EOL); |
|
sysctl_createv(clog, 0, NULL, NULL, |
|
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
|
CTLTYPE_INT, "tempvltime", |
|
SYSCTL_DESCR("valid lifetime of a temporary address"), |
|
NULL, 0, &ip6_temp_valid_lifetime, 0, |
|
CTL_NET, PF_INET6, IPPROTO_IPV6, |
|
CTL_CREATE, CTL_EOL); |
|
sysctl_createv(clog, 0, NULL, NULL, |
|
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
|
CTLTYPE_INT, "maxfrags", |
|
SYSCTL_DESCR("Maximum fragments in reassembly queue"), |
|
NULL, 0, &ip6_maxfrags, 0, |
|
CTL_NET, PF_INET6, IPPROTO_IPV6, |
|
IPV6CTL_MAXFRAGS, CTL_EOL); |
|
sysctl_createv(clog, 0, NULL, NULL, |
|
CTLFLAG_PERMANENT, |
|
CTLTYPE_STRUCT, "stats", |
|
SYSCTL_DESCR("IPv6 statistics"), |
|
sysctl_net_inet6_ip6_stats, 0, NULL, 0, |
|
CTL_NET, PF_INET6, IPPROTO_IPV6, |
|
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); |
|
sysctl_createv(clog, 0, NULL, NULL, |
|
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
|
CTLTYPE_INT, "mcast_pmtu", |
|
SYSCTL_DESCR("Enable pMTU discovery for multicast packet"), |
|
NULL, 0, &ip6_mcast_pmtu, 0, |
|
CTL_NET, PF_INET6, IPPROTO_IPV6, |
|
CTL_CREATE, CTL_EOL); |
|
#ifdef GATEWAY |
|
sysctl_createv(clog, 0, NULL, NULL, |
|
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
|
CTLTYPE_INT, "maxflows", |
|
SYSCTL_DESCR("Number of flows for fast forwarding (IPv6)"), |
|
sysctl_net_inet6_ip6_maxflows, 0, &ip6_maxflows, 0, |
|
CTL_NET, PF_INET6, IPPROTO_IPV6, |
|
CTL_CREATE, CTL_EOL); |
|
sysctl_createv(clog, 0, NULL, NULL, |
|
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
|
CTLTYPE_INT, "hashsize", |
|
SYSCTL_DESCR("Size of hash table for fast forwarding (IPv6)"), |
|
sysctl_net_inet6_ip6_hashsize, 0, &ip6_hashsize, 0, |
|
CTL_NET, PF_INET6, IPPROTO_IPV6, |
|
CTL_CREATE, CTL_EOL); |
|
#endif |
|
/* anonportalgo RFC6056 subtree */ |
|
const struct sysctlnode *portalgo_node; |
|
sysctl_createv(clog, 0, NULL, &portalgo_node, |
|
CTLFLAG_PERMANENT, |
|
CTLTYPE_NODE, "anonportalgo", |
|
SYSCTL_DESCR("Anonymous port algorithm selection (RFC 6056)"), |
|
NULL, 0, NULL, 0, |
|
CTL_NET, PF_INET6, IPPROTO_IPV6, CTL_CREATE, CTL_EOL); |
|
sysctl_createv(clog, 0, &portalgo_node, NULL, |
|
CTLFLAG_PERMANENT, |
|
CTLTYPE_STRING, "available", |
|
SYSCTL_DESCR("available algorithms"), |
|
sysctl_portalgo_available, 0, NULL, PORTALGO_MAXLEN, |
|
CTL_CREATE, CTL_EOL); |
|
sysctl_createv(clog, 0, &portalgo_node, NULL, |
|
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
|
CTLTYPE_STRING, "selected", |
|
SYSCTL_DESCR("selected algorithm"), |
|
sysctl_portalgo_selected6, 0, NULL, PORTALGO_MAXLEN, |
|
CTL_CREATE, CTL_EOL); |
|
sysctl_createv(clog, 0, &portalgo_node, NULL, |
|
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
|
CTLTYPE_STRUCT, "reserve", |
|
SYSCTL_DESCR("bitmap of reserved ports"), |
|
sysctl_portalgo_reserve6, 0, NULL, 0, |
|
CTL_CREATE, CTL_EOL); |
|
sysctl_createv(clog, 0, NULL, NULL, |
|
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
|
CTLTYPE_INT, "neighborgcthresh", |
|
SYSCTL_DESCR("Maximum number of entries in neighbor" |
|
" cache"), |
|
NULL, 1, &ip6_neighborgcthresh, 0, |
|
CTL_NET, PF_INET6, IPPROTO_IPV6, |
|
CTL_CREATE, CTL_EOL); |
|
sysctl_createv(clog, 0, NULL, NULL, |
|
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
|
CTLTYPE_INT, "maxifprefixes", |
|
SYSCTL_DESCR("Maximum number of prefixes created by" |
|
" route advertisement per interface"), |
|
NULL, 1, &ip6_maxifprefixes, 0, |
|
CTL_NET, PF_INET6, IPPROTO_IPV6, |
|
CTL_CREATE, CTL_EOL); |
|
sysctl_createv(clog, 0, NULL, NULL, |
|
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
|
CTLTYPE_INT, "maxifdefrouters", |
|
SYSCTL_DESCR("Maximum number of default routers created" |
|
" by route advertisement per interface"), |
|
NULL, 1, &ip6_maxifdefrouters, 0, |
|
CTL_NET, PF_INET6, IPPROTO_IPV6, |
|
CTL_CREATE, CTL_EOL); |
|
sysctl_createv(clog, 0, NULL, NULL, |
|
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
|
CTLTYPE_INT, "maxdynroutes", |
|
SYSCTL_DESCR("Maximum number of routes created via" |
|
" redirect"), |
|
NULL, 1, &ip6_maxdynroutes, 0, |
|
CTL_NET, PF_INET6, IPPROTO_IPV6, |
|
CTL_CREATE, CTL_EOL); |
|
} |
|
|
|
void |
|
ip6_statinc(u_int stat) |
|
{ |
|
|
|
KASSERT(stat < IP6_NSTATS); |
|
IP6_STATINC(stat); |
} |
} |