version 1.52.2.1, 2002/05/30 13:52:32 |
version 1.104, 2007/05/05 21:23:50 |
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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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__KERNEL_RCSID(0, "$NetBSD$"); |
__KERNEL_RCSID(0, "$NetBSD$"); |
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#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_pfil_hooks.h" |
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Line 107 __KERNEL_RCSID(0, "$NetBSD$"); |
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Line 104 __KERNEL_RCSID(0, "$NetBSD$"); |
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#include <netinet6/ip6_var.h> |
#include <netinet6/ip6_var.h> |
#include <netinet6/in6_pcb.h> |
#include <netinet6/in6_pcb.h> |
#include <netinet/icmp6.h> |
#include <netinet/icmp6.h> |
|
#include <netinet6/scope6_var.h> |
#include <netinet6/in6_ifattach.h> |
#include <netinet6/in6_ifattach.h> |
#include <netinet6/nd6.h> |
#include <netinet6/nd6.h> |
#include <netinet6/in6_prefix.h> |
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|
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#ifdef IPSEC |
#ifdef IPSEC |
#include <netinet6/ipsec.h> |
#include <netinet6/ipsec.h> |
#endif |
#endif |
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|
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#ifdef FAST_IPSEC |
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#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 /* FAST_IPSEC */ |
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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" |
#include "gif.h" |
#include "gif.h" |
#include "bpfilter.h" |
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|
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#if NGIF > 0 |
#if NGIF > 0 |
#include <netinet6/in6_gif.h> |
#include <netinet6/in6_gif.h> |
Line 136 static int ip6qmaxlen = IFQ_MAXLEN; |
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Line 136 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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extern struct ifnet loif[NLOOP]; |
extern struct callout in6_tmpaddrtimer_ch; |
|
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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 */ |
Line 148 struct pfil_head inet6_pfil_hook; |
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Line 149 struct pfil_head inet6_pfil_hook; |
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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 struct m_tag *ip6_setdstifaddr __P((struct mbuf *, struct in6_ifaddr *)); |
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static int ip6_hopopts_input __P((u_int32_t *, u_int32_t *, struct mbuf **, int *)); |
static int ip6_hopopts_input __P((u_int32_t *, u_int32_t *, struct mbuf **, int *)); |
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static struct mbuf *ip6_pullexthdr __P((struct mbuf *, size_t, int)); |
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/* |
/* |
* IP6 initialization: fill in IP6 protocol switch table. |
* IP6 initialization: fill in IP6 protocol switch table. |
Line 158 static int ip6_hopopts_input __P((u_int3 |
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Line 161 static int ip6_hopopts_input __P((u_int3 |
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void |
void |
ip6_init() |
ip6_init() |
{ |
{ |
struct ip6protosw *pr; |
const struct ip6protosw *pr; |
int i; |
int i; |
|
|
pr = (struct ip6protosw *)pffindproto(PF_INET6, IPPROTO_RAW, SOCK_RAW); |
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; |
ip6intrq.ifq_maxlen = ip6qmaxlen; |
|
scope6_init(); |
|
addrsel_policy_init(); |
nd6_init(); |
nd6_init(); |
frag6_init(); |
frag6_init(); |
ip6_flow_seq = arc4random(); |
ip6_desync_factor = arc4random() % MAX_TEMP_DESYNC_FACTOR; |
|
|
ip6_init2((void *)0); |
ip6_init2((void *)0); |
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#ifdef GATEWAY |
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ip6flow_init(ip6_hashsize); |
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#endif |
|
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#ifdef PFIL_HOOKS |
#ifdef PFIL_HOOKS |
/* Register our Packet Filter hook. */ |
/* Register our Packet Filter hook. */ |
|
|
} |
} |
|
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static void |
static void |
ip6_init2(dummy) |
ip6_init2(void *dummy) |
void *dummy; |
|
{ |
{ |
/* |
|
* 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], NULL); |
|
|
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/* nd6_timer_init */ |
/* nd6_timer_init */ |
callout_init(&nd6_timer_ch); |
callout_init(&nd6_timer_ch); |
callout_reset(&nd6_timer_ch, hz, nd6_timer, NULL); |
callout_reset(&nd6_timer_ch, hz, nd6_timer, NULL); |
/* router renumbering prefix list maintenance */ |
|
callout_init(&in6_rr_timer_ch); |
/* timer for regeneranation of temporary addresses randomize ID */ |
callout_reset(&in6_rr_timer_ch, hz, in6_rr_timer, NULL); |
callout_init(&in6_tmpaddrtimer_ch); |
|
callout_reset(&in6_tmpaddrtimer_ch, |
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(ip6_temp_preferred_lifetime - ip6_desync_factor - |
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ip6_temp_regen_advance) * hz, |
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in6_tmpaddrtimer, NULL); |
} |
} |
|
|
/* |
/* |
|
|
splx(s); |
splx(s); |
if (m == 0) |
if (m == 0) |
return; |
return; |
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/* drop the packet if IPv6 operation is disabled on the IF */ |
|
if ((ND_IFINFO(m->m_pkthdr.rcvif)->flags & ND6_IFF_IFDISABLED)) { |
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m_freem(m); |
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return; |
|
} |
ip6_input(m); |
ip6_input(m); |
} |
} |
} |
} |
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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 mbuf *m; |
|
{ |
{ |
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; |
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; |
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int srcrt = 0; |
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const struct sockaddr_in6 *cdst; |
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#ifdef FAST_IPSEC |
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struct m_tag *mtag; |
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struct tdb_ident *tdbi; |
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struct secpolicy *sp; |
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int s, error; |
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#endif |
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#ifdef IPSEC |
#ifdef IPSEC |
/* |
/* |
|
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#endif |
#endif |
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/* |
/* |
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* make sure we don't have onion peering information into m_tag. |
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*/ |
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ip6_delaux(m); |
|
|
|
/* |
* mbuf statistics |
* mbuf statistics |
*/ |
*/ |
if (m->m_flags & M_EXT) { |
if (m->m_flags & M_EXT) { |
|
|
else |
else |
ip6stat.ip6s_mext1++; |
ip6stat.ip6s_mext1++; |
} else { |
} else { |
#define M2MMAX (sizeof(ip6stat.ip6s_m2m)/sizeof(ip6stat.ip6s_m2m[0])) |
#define M2MMAX __arraycount(ip6stat.ip6s_m2m) |
if (m->m_next) { |
if (m->m_next) { |
if (m->m_flags & M_LOOP) { |
if (m->m_flags & M_LOOP) { |
ip6stat.ip6s_m2m[loif[0].if_index]++; /* XXX */ |
ip6stat.ip6s_m2m[lo0ifp->if_index]++; /* XXX */ |
} else if (m->m_pkthdr.rcvif->if_index < M2MMAX) |
} else if (m->m_pkthdr.rcvif->if_index < M2MMAX) |
ip6stat.ip6s_m2m[m->m_pkthdr.rcvif->if_index]++; |
ip6stat.ip6s_m2m[m->m_pkthdr.rcvif->if_index]++; |
else |
else |
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in6_ifstat_inc(m->m_pkthdr.rcvif, ifs6_in_receive); |
in6_ifstat_inc(m->m_pkthdr.rcvif, ifs6_in_receive); |
ip6stat.ip6s_total++; |
ip6stat.ip6s_total++; |
|
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#ifndef PULLDOWN_TEST |
/* |
/* XXX is the line really necessary? */ |
* If the IPv6 header is not aligned, slurp it up into a new |
IP6_EXTHDR_CHECK(m, 0, sizeof(struct ip6_hdr), /*nothing*/); |
* mbuf with space for link headers, in the event we forward |
#endif |
* it. Otherwise, if it is aligned, make sure the entire base |
|
* IPv6 header is in the first mbuf of the chain. |
if (m->m_len < sizeof(struct ip6_hdr)) { |
*/ |
struct ifnet *inifp; |
if (IP6_HDR_ALIGNED_P(mtod(m, void *)) == 0) { |
inifp = m->m_pkthdr.rcvif; |
struct ifnet *inifp = m->m_pkthdr.rcvif; |
if ((m = m_pullup(m, sizeof(struct ip6_hdr))) == 0) { |
if ((m = m_copyup(m, sizeof(struct ip6_hdr), |
|
(max_linkhdr + 3) & ~3)) == NULL) { |
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/* XXXJRT new stat, please */ |
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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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} else if (__predict_false(m->m_len < sizeof(struct ip6_hdr))) { |
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struct ifnet *inifp = m->m_pkthdr.rcvif; |
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if ((m = m_pullup(m, sizeof(struct ip6_hdr))) == NULL) { |
ip6stat.ip6s_toosmall++; |
ip6stat.ip6s_toosmall++; |
in6_ifstat_inc(inifp, ifs6_in_hdrerr); |
in6_ifstat_inc(inifp, ifs6_in_hdrerr); |
return; |
return; |
|
|
goto bad; |
goto bad; |
} |
} |
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#if defined(IPSEC) |
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/* IPv6 fast forwarding is not compatible with IPsec. */ |
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m->m_flags &= ~M_CANFASTFWD; |
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#else |
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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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m->m_flags |= M_CANFASTFWD; |
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#endif |
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#ifdef PFIL_HOOKS |
#ifdef PFIL_HOOKS |
/* |
/* |
* Run through list of hooks for input packets. If there are any |
* Run through list of hooks for input packets. If there are any |
|
|
*/ |
*/ |
#ifdef IPSEC |
#ifdef IPSEC |
if (!ipsec_getnhist(m)) |
if (!ipsec_getnhist(m)) |
|
#elif defined(FAST_IPSEC) |
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if (!ipsec_indone(m)) |
#else |
#else |
if (1) |
if (1) |
#endif |
#endif |
{ |
{ |
|
struct in6_addr odst; |
|
|
|
odst = ip6->ip6_dst; |
if (pfil_run_hooks(&inet6_pfil_hook, &m, m->m_pkthdr.rcvif, |
if (pfil_run_hooks(&inet6_pfil_hook, &m, m->m_pkthdr.rcvif, |
PFIL_IN) != 0) |
PFIL_IN) != 0) |
return; |
return; |
if (m == NULL) |
if (m == NULL) |
return; |
return; |
ip6 = mtod(m, struct ip6_hdr *); |
ip6 = mtod(m, struct ip6_hdr *); |
|
srcrt = !IN6_ARE_ADDR_EQUAL(&odst, &ip6->ip6_dst); |
} |
} |
#endif /* PFIL_HOOKS */ |
#endif /* PFIL_HOOKS */ |
|
|
|
|
*/ |
*/ |
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)) { |
|
/* |
|
* XXX: "badscope" is not very suitable for a multicast source. |
|
*/ |
ip6stat.ip6s_badscope++; |
ip6stat.ip6s_badscope++; |
in6_ifstat_inc(m->m_pkthdr.rcvif, ifs6_in_addrerr); |
in6_ifstat_inc(m->m_pkthdr.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)) { |
* Disambiguate address scope zones (if there is ambiguity). |
if (m->m_pkthdr.rcvif->if_flags & IFF_LOOPBACK) { |
* We first make sure that the original source or destination address |
ours = 1; |
* is not in our internal form for scoped addresses. Such addresses |
deliverifp = m->m_pkthdr.rcvif; |
* are not necessarily invalid spec-wise, but we cannot accept them due |
goto hbhcheck; |
* to the usage conflict. |
} else { |
* in6_setscope() then also checks and rejects the cases where src or |
ip6stat.ip6s_badscope++; |
* dst are the loopback address and the receiving interface |
in6_ifstat_inc(m->m_pkthdr.rcvif, ifs6_in_addrerr); |
* is not loopback. |
goto bad; |
*/ |
} |
if (__predict_false( |
} |
m_makewritable(&m, 0, sizeof(struct ip6_hdr), M_DONTWAIT))) |
|
goto bad; |
/* drop packets if interface ID portion is already filled */ |
ip6 = mtod(m, struct ip6_hdr *); |
if ((m->m_pkthdr.rcvif->if_flags & IFF_LOOPBACK) == 0) { |
if (in6_clearscope(&ip6->ip6_src) || in6_clearscope(&ip6->ip6_dst)) { |
if (IN6_IS_SCOPE_LINKLOCAL(&ip6->ip6_src) && |
ip6stat.ip6s_badscope++; /* XXX */ |
ip6->ip6_src.s6_addr16[1]) { |
goto bad; |
ip6stat.ip6s_badscope++; |
|
goto bad; |
|
} |
|
if (IN6_IS_SCOPE_LINKLOCAL(&ip6->ip6_dst) && |
|
ip6->ip6_dst.s6_addr16[1]) { |
|
ip6stat.ip6s_badscope++; |
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goto bad; |
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} |
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} |
} |
|
if (in6_setscope(&ip6->ip6_src, m->m_pkthdr.rcvif, NULL) || |
if (IN6_IS_SCOPE_LINKLOCAL(&ip6->ip6_src)) |
in6_setscope(&ip6->ip6_dst, m->m_pkthdr.rcvif, NULL)) { |
ip6->ip6_src.s6_addr16[1] |
ip6stat.ip6s_badscope++; |
= htons(m->m_pkthdr.rcvif->if_index); |
goto bad; |
if (IN6_IS_SCOPE_LINKLOCAL(&ip6->ip6_dst)) |
|
ip6->ip6_dst.s6_addr16[1] |
|
= htons(m->m_pkthdr.rcvif->if_index); |
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|
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/* |
|
* We use rt->rt_ifp to determine if the address is ours or not. |
|
* If rt_ifp is lo0, the address is ours. |
|
* The problem here is, rt->rt_ifp for fe80::%lo0/64 is set to lo0, |
|
* so any address under fe80::%lo0/64 will be mistakenly considered |
|
* local. The special case is supplied to handle the case properly |
|
* by actually looking at interface addresses |
|
* (using in6ifa_ifpwithaddr). |
|
*/ |
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if ((m->m_pkthdr.rcvif->if_flags & IFF_LOOPBACK) != 0 && |
|
IN6_IS_ADDR_LINKLOCAL(&ip6->ip6_dst)) { |
|
if (!in6ifa_ifpwithaddr(m->m_pkthdr.rcvif, &ip6->ip6_dst)) { |
|
icmp6_error(m, ICMP6_DST_UNREACH, |
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ICMP6_DST_UNREACH_ADDR, 0); |
|
/* m is already freed */ |
|
return; |
|
} |
|
|
|
ours = 1; |
|
deliverifp = m->m_pkthdr.rcvif; |
|
goto hbhcheck; |
|
} |
} |
|
|
/* |
/* |
|
|
goto hbhcheck; |
goto hbhcheck; |
} |
} |
|
|
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cdst = satocsin6(rtcache_getdst(&ip6_forward_rt)); |
/* |
/* |
* Unicast check |
* Unicast check |
*/ |
*/ |
if (ip6_forward_rt.ro_rt != NULL && |
if (cdst == NULL) |
(ip6_forward_rt.ro_rt->rt_flags & RTF_UP) != 0 && |
; |
IN6_ARE_ADDR_EQUAL(&ip6->ip6_dst, |
else if (!IN6_ARE_ADDR_EQUAL(&ip6->ip6_dst, &cdst->sin6_addr)) |
&((struct sockaddr_in6 *)(&ip6_forward_rt.ro_dst))->sin6_addr)) |
rtcache_free(&ip6_forward_rt); |
|
else |
|
rtcache_check(&ip6_forward_rt); |
|
if (ip6_forward_rt.ro_rt != NULL) { |
|
/* XXX Revalidated route is accounted wrongly. */ |
ip6stat.ip6s_forward_cachehit++; |
ip6stat.ip6s_forward_cachehit++; |
else { |
} else { |
struct sockaddr_in6 *dst6; |
union { |
|
struct sockaddr dst; |
|
struct sockaddr_in6 dst6; |
|
} u; |
|
|
|
ip6stat.ip6s_forward_cachemiss++; |
|
|
if (ip6_forward_rt.ro_rt) { |
sockaddr_in6_init(&u.dst6, &ip6->ip6_dst, 0, 0, 0); |
/* route is down or destination is different */ |
rtcache_setdst(&ip6_forward_rt, &u.dst); |
ip6stat.ip6s_forward_cachemiss++; |
|
RTFREE(ip6_forward_rt.ro_rt); |
|
ip6_forward_rt.ro_rt = 0; |
|
} |
|
|
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bzero(&ip6_forward_rt.ro_dst, sizeof(struct sockaddr_in6)); |
|
dst6 = (struct sockaddr_in6 *)&ip6_forward_rt.ro_dst; |
|
dst6->sin6_len = sizeof(struct sockaddr_in6); |
|
dst6->sin6_family = AF_INET6; |
|
dst6->sin6_addr = ip6->ip6_dst; |
|
|
|
rtalloc((struct route *)&ip6_forward_rt); |
rtcache_init(&ip6_forward_rt); |
} |
} |
|
|
#define rt6_key(r) ((struct sockaddr_in6 *)((r)->rt_nodes->rn_key)) |
#define rt6_key(r) ((struct sockaddr_in6 *)((r)->rt_nodes->rn_key)) |
|
|
* 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 (ip6_forward_rt.ro_rt != NULL && |
(ip6_forward_rt.ro_rt->rt_flags & |
(ip6_forward_rt.ro_rt->rt_flags & |
(RTF_HOST|RTF_GATEWAY)) == RTF_HOST && |
(RTF_HOST|RTF_GATEWAY)) == RTF_HOST && |
|
!(ip6_forward_rt.ro_rt->rt_flags & RTF_CLONED) && |
#if 0 |
#if 0 |
/* |
/* |
* The check below is redundant since the comparison of |
* The check below is redundant since the comparison of |
|
|
* 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_key(ip6_forward_rt.ro_rt)->sin6_addr) && |
&rt6_key(ip6_forward_rt.ro_rt)->sin6_addr) && |
#endif |
#endif |
ip6_forward_rt.ro_rt->rt_ifp->if_type == IFT_LOOP) { |
ip6_forward_rt.ro_rt->rt_ifp->if_type == IFT_LOOP) { |
struct in6_ifaddr *ia6 = |
struct in6_ifaddr *ia6 = |
|
|
} |
} |
|
|
/* |
/* |
* 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 (ip6_forward_rt.ro_rt != NULL && |
&& ip6_forward_rt.ro_rt->rt_ifp->if_type == IFT_FAITH) { |
ip6_forward_rt.ro_rt->rt_ifp != NULL && |
|
ip6_forward_rt.ro_rt->rt_ifp->if_type == IFT_FAITH) { |
/* XXX do we need more sanity checks? */ |
/* XXX do we need more sanity checks? */ |
ours = 1; |
ours = 1; |
deliverifp = ip6_forward_rt.ro_rt->rt_ifp; /* faith */ |
deliverifp = ip6_forward_rt.ro_rt->rt_ifp; /* faith */ |
|
|
* working right. |
* working right. |
*/ |
*/ |
struct ifaddr *ifa; |
struct ifaddr *ifa; |
for (ifa = m->m_pkthdr.rcvif->if_addrlist.tqh_first; |
TAILQ_FOREACH(ifa, &m->m_pkthdr.rcvif->if_addrlist, ifa_list) { |
ifa; |
|
ifa = ifa->ifa_list.tqe_next) { |
|
if (ifa->ifa_addr == NULL) |
if (ifa->ifa_addr == NULL) |
continue; /* just for safety */ |
continue; /* just for safety */ |
if (ifa->ifa_addr->sa_family != AF_INET6) |
if (ifa->ifa_addr->sa_family != AF_INET6) |
|
|
|
|
hbhcheck: |
hbhcheck: |
/* |
/* |
|
* record address information into m_tag, if we don't have one yet. |
|
* note that we are unable to record it, if the address is not listed |
|
* as our interface address (e.g. multicast addresses, addresses |
|
* within FAITH prefixes and such). |
|
*/ |
|
if (deliverifp && !ip6_getdstifaddr(m)) { |
|
struct in6_ifaddr *ia6; |
|
|
|
ia6 = in6_ifawithifp(deliverifp, &ip6->ip6_dst); |
|
if (ia6) { |
|
if (!ip6_setdstifaddr(m, ia6)) { |
|
/* |
|
* XXX maybe we should drop the packet here, |
|
* as we could not provide enough information |
|
* to the upper layers. |
|
*/ |
|
} |
|
} |
|
} |
|
|
|
/* |
* Process Hop-by-Hop options header if it's contained. |
* Process Hop-by-Hop options header if it's contained. |
* m may be modified in ip6_hopopts_input(). |
* m may be modified in ip6_hopopts_input(). |
* If a JumboPayload option is included, plen will also be modified. |
* If a JumboPayload option is included, plen will also be modified. |
|
|
if (ip6->ip6_plen == 0 && plen == 0) { |
if (ip6->ip6_plen == 0 && plen == 0) { |
/* |
/* |
* Note that if a valid jumbo payload option is |
* Note that if a valid jumbo payload option is |
* contained, ip6_hoptops_input() must set a valid |
* contained, ip6_hopopts_input() must set a valid |
* (non-zero) payload length to the variable plen. |
* (non-zero) payload length to the variable plen. |
*/ |
*/ |
ip6stat.ip6s_badoptions++; |
ip6stat.ip6s_badoptions++; |
in6_ifstat_inc(m->m_pkthdr.rcvif, ifs6_in_discard); |
in6_ifstat_inc(m->m_pkthdr.rcvif, ifs6_in_discard); |
in6_ifstat_inc(m->m_pkthdr.rcvif, ifs6_in_hdrerr); |
in6_ifstat_inc(m->m_pkthdr.rcvif, ifs6_in_hdrerr); |
icmp6_error(m, ICMP6_PARAM_PROB, |
icmp6_error(m, ICMP6_PARAM_PROB, |
ICMP6_PARAMPROB_HEADER, |
ICMP6_PARAMPROB_HEADER, |
(caddr_t)&ip6->ip6_plen - (caddr_t)ip6); |
(char *)&ip6->ip6_plen - (char *)ip6); |
return; |
return; |
} |
} |
#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), |
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++; |
ip6stat.ip6s_tooshort++; |
return; |
return; |
} |
} |
#endif |
KASSERT(IP6_HDR_ALIGNED_P(hbh)); |
nxt = hbh->ip6h_nxt; |
nxt = hbh->ip6h_nxt; |
|
|
/* |
/* |
|
|
return; |
return; |
} |
} |
} else if (!ours) { |
} else if (!ours) { |
ip6_forward(m, 0); |
ip6_forward(m, srcrt); |
return; |
return; |
} |
} |
|
|
ip6 = mtod(m, struct ip6_hdr *); |
ip6 = mtod(m, struct ip6_hdr *); |
|
|
|
|
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++; |
ip6stat.ip6s_toomanyhdr++; |
|
in6_ifstat_inc(m->m_pkthdr.rcvif, ifs6_in_hdrerr); |
goto bad; |
goto bad; |
} |
} |
|
|
|
|
goto bad; |
goto bad; |
} |
} |
|
|
|
if (nxt == IPPROTO_ROUTING) { |
|
if (rh_present++) { |
|
in6_ifstat_inc(m->m_pkthdr.rcvif, |
|
ifs6_in_hdrerr); |
|
ip6stat.ip6s_badoptions++; |
|
goto bad; |
|
} |
|
} |
|
|
#ifdef IPSEC |
#ifdef IPSEC |
/* |
/* |
* enforce IPsec policy checking if we are seeing last header. |
* enforce IPsec policy checking if we are seeing last header. |
|
|
goto bad; |
goto bad; |
} |
} |
#endif |
#endif |
|
#ifdef FAST_IPSEC |
|
/* |
|
* 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) { |
|
/* |
|
* Check if the packet has already had IPsec processing |
|
* done. If so, then just pass it along. This tag gets |
|
* set during AH, ESP, etc. input handling, before the |
|
* packet is returned to the ip input queue for delivery. |
|
*/ |
|
mtag = m_tag_find(m, PACKET_TAG_IPSEC_IN_DONE, NULL); |
|
s = splsoftnet(); |
|
if (mtag != NULL) { |
|
tdbi = (struct tdb_ident *)(mtag + 1); |
|
sp = ipsec_getpolicy(tdbi, IPSEC_DIR_INBOUND); |
|
} else { |
|
sp = ipsec_getpolicybyaddr(m, IPSEC_DIR_INBOUND, |
|
IP_FORWARDING, &error); |
|
} |
|
if (sp != NULL) { |
|
/* |
|
* Check security policy against packet attributes. |
|
*/ |
|
error = ipsec_in_reject(sp, m); |
|
KEY_FREESP(&sp); |
|
} else { |
|
/* XXX error stat??? */ |
|
error = EINVAL; |
|
DPRINTF(("ip6_input: no SP, packet discarded\n"));/*XXX*/ |
|
goto bad; |
|
} |
|
splx(s); |
|
if (error) |
|
goto bad; |
|
} |
|
#endif /* FAST_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(m, ia6) |
|
struct mbuf *m; |
|
struct in6_ifaddr *ia6; |
|
{ |
|
struct m_tag *mtag; |
|
|
|
mtag = ip6_addaux(m); |
|
if (mtag) |
|
((struct ip6aux *)(mtag + 1))->ip6a_dstia6 = ia6; |
|
return mtag; /* NULL if failed to set */ |
|
} |
|
|
|
struct in6_ifaddr * |
|
ip6_getdstifaddr(m) |
|
struct mbuf *m; |
|
{ |
|
struct m_tag *mtag; |
|
|
|
mtag = ip6_findaux(m); |
|
if (mtag) |
|
return ((struct ip6aux *)(mtag + 1))->ip6a_dstia6; |
|
else |
|
return NULL; |
|
} |
|
|
|
/* |
* Hop-by-Hop options header processing. If a valid jumbo payload option is |
* Hop-by-Hop options header processing. If a valid jumbo payload option is |
* included, the real payload length will be stored in plenp. |
* included, the real payload length will be stored in plenp. |
*/ |
*/ |
Line 769 ip6_hopopts_input(plenp, rtalertp, mp, o |
|
Line 885 ip6_hopopts_input(plenp, rtalertp, mp, o |
|
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) { |
Line 793 ip6_hopopts_input(plenp, rtalertp, mp, o |
|
Line 900 ip6_hopopts_input(plenp, rtalertp, mp, o |
|
ip6stat.ip6s_tooshort++; |
ip6stat.ip6s_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 812 ip6_hopopts_input(plenp, rtalertp, mp, o |
|
Line 918 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 |
int |
ip6_process_hopopts(m, opthead, hbhlen, rtalertp, plenp) |
ip6_process_hopopts(m, opthead, hbhlen, rtalertp, plenp) |
Line 826 ip6_process_hopopts(m, opthead, hbhlen, |
|
Line 936 ip6_process_hopopts(m, opthead, hbhlen, |
|
u_int8_t *opt = opthead; |
u_int8_t *opt = opthead; |
u_int16_t rtalert_val; |
u_int16_t rtalert_val; |
u_int32_t jumboplen; |
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) { |
Line 846 ip6_process_hopopts(m, opthead, hbhlen, |
|
Line 957 ip6_process_hopopts(m, opthead, hbhlen, |
|
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, |
|
erroff + opt + 1 - opthead); |
|
return (-1); |
} |
} |
optlen = IP6OPT_RTALERT_LEN; |
optlen = IP6OPT_RTALERT_LEN; |
bcopy((caddr_t)(opt + 2), (caddr_t)&rtalert_val, 2); |
bcopy((void *)(opt + 2), (void *)&rtalert_val, 2); |
*rtalertp = ntohs(rtalert_val); |
*rtalertp = ntohs(rtalert_val); |
break; |
break; |
case IP6OPT_JUMBO: |
case IP6OPT_JUMBO: |
Line 861 ip6_process_hopopts(m, opthead, hbhlen, |
|
Line 974 ip6_process_hopopts(m, opthead, hbhlen, |
|
goto bad; |
goto bad; |
} |
} |
if (*(opt + 1) != IP6OPT_JUMBO_LEN - 2) { |
if (*(opt + 1) != IP6OPT_JUMBO_LEN - 2) { |
/* XXX: should we discard the packet? */ |
/* XXX stat */ |
log(LOG_ERR, "length of jumbopayload opt " |
icmp6_error(m, ICMP6_PARAM_PROB, |
"is inconsistent(%d)\n", |
ICMP6_PARAMPROB_HEADER, |
*(opt + 1)); |
erroff + opt + 1 - opthead); |
|
return (-1); |
} |
} |
optlen = IP6OPT_JUMBO_LEN; |
optlen = IP6OPT_JUMBO_LEN; |
|
|
Line 876 ip6_process_hopopts(m, opthead, hbhlen, |
|
Line 990 ip6_process_hopopts(m, opthead, hbhlen, |
|
if (ip6->ip6_plen) { |
if (ip6->ip6_plen) { |
ip6stat.ip6s_badoptions++; |
ip6stat.ip6s_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 - opthead); |
sizeof(struct ip6_hbh) + |
return (-1); |
opt - opthead); |
|
return(-1); |
|
} |
} |
|
|
/* |
/* |
Line 902 ip6_process_hopopts(m, opthead, hbhlen, |
|
Line 1014 ip6_process_hopopts(m, opthead, hbhlen, |
|
if (*plenp != 0) { |
if (*plenp != 0) { |
ip6stat.ip6s_badoptions++; |
ip6stat.ip6s_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); |
|
} |
} |
#endif |
#endif |
|
|
Line 916 ip6_process_hopopts(m, opthead, hbhlen, |
|
Line 1026 ip6_process_hopopts(m, opthead, hbhlen, |
|
if (jumboplen <= IPV6_MAXPACKET) { |
if (jumboplen <= IPV6_MAXPACKET) { |
ip6stat.ip6s_badoptions++; |
ip6stat.ip6s_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; |
*plenp = jumboplen; |
|
|
Line 930 ip6_process_hopopts(m, opthead, hbhlen, |
|
Line 1038 ip6_process_hopopts(m, opthead, hbhlen, |
|
ip6stat.ip6s_toosmall++; |
ip6stat.ip6s_toosmall++; |
goto bad; |
goto bad; |
} |
} |
if ((optlen = ip6_unknown_opt(opt, m, |
optlen = ip6_unknown_opt(opt, m, |
sizeof(struct ip6_hdr) + |
erroff + opt - opthead); |
sizeof(struct ip6_hbh) + |
if (optlen == -1) |
opt - opthead)) == -1) |
return (-1); |
return(-1); |
|
optlen += 2; |
optlen += 2; |
break; |
break; |
} |
} |
} |
} |
|
|
return(0); |
return (0); |
|
|
bad: |
bad: |
m_freem(m); |
m_freem(m); |
return(-1); |
return (-1); |
} |
} |
|
|
/* |
/* |
Line 963 ip6_unknown_opt(optp, m, off) |
|
Line 1070 ip6_unknown_opt(optp, m, off) |
|
|
|
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++; |
ip6stat.ip6s_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++; |
ip6stat.ip6s_badoptions++; |
ip6 = mtod(m, struct ip6_hdr *); |
ip6 = mtod(m, struct ip6_hdr *); |
Line 980 ip6_unknown_opt(optp, m, off) |
|
Line 1087 ip6_unknown_opt(optp, m, off) |
|
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 1005 ip6_savecontrol(in6p, mp, ip6, m) |
|
Line 1112 ip6_savecontrol(in6p, mp, ip6, m) |
|
struct ip6_hdr *ip6; |
struct ip6_hdr *ip6; |
struct mbuf *m; |
struct mbuf *m; |
{ |
{ |
struct proc *p = curproc; /* XXX */ |
#ifdef RFC2292 |
int privileged; |
#define IS2292(x, y) ((in6p->in6p_flags & IN6P_RFC2292) ? (x) : (y)) |
|
#else |
privileged = 0; |
#define IS2292(x, y) (y) |
if (p && !suser(p->p_ucred, &p->p_acflag)) |
#endif |
privileged++; |
|
|
|
#ifdef SO_TIMESTAMP |
#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; |
|
|
microtime(&tv); |
microtime(&tv); |
*mp = sbcreatecontrol((caddr_t) &tv, sizeof(tv), |
*mp = sbcreatecontrol((void *) &tv, sizeof(tv), |
SCM_TIMESTAMP, SOL_SOCKET); |
SCM_TIMESTAMP, SOL_SOCKET); |
if (*mp) |
if (*mp) |
mp = &(*mp)->m_next; |
mp = &(*mp)->m_next; |
} |
} |
#endif |
#endif |
if (in6p->in6p_flags & IN6P_RECVDSTADDR) { |
|
*mp = sbcreatecontrol((caddr_t) &ip6->ip6_dst, |
|
sizeof(struct in6_addr), IPV6_RECVDSTADDR, |
|
IPPROTO_IPV6); |
|
if (*mp) |
|
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) != 0) { |
if ((in6p->in6p_flags & IN6P_PKTINFO) != 0) { |
struct in6_pktinfo pi6; |
struct in6_pktinfo pi6; |
|
|
bcopy(&ip6->ip6_dst, &pi6.ipi6_addr, sizeof(struct in6_addr)); |
bcopy(&ip6->ip6_dst, &pi6.ipi6_addr, sizeof(struct in6_addr)); |
if (IN6_IS_SCOPE_LINKLOCAL(&pi6.ipi6_addr)) |
in6_clearscope(&pi6.ipi6_addr); /* XXX */ |
pi6.ipi6_addr.s6_addr16[1] = 0; |
pi6.ipi6_ifindex = m->m_pkthdr.rcvif ? |
pi6.ipi6_ifindex = (m && m->m_pkthdr.rcvif) |
m->m_pkthdr.rcvif->if_index : 0; |
? 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) != 0 && 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 1078 ip6_savecontrol(in6p, mp, ip6, m) |
|
Line 1188 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_EXTHDR_GET(hbh, struct ip6_hbh *, m, |
|
sizeof(struct ip6_hdr), sizeof(struct ip6_hbh)); |
|
if (hbh == NULL) { |
|
ip6stat.ip6s_tooshort++; |
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) { |
|
ip6stat.ip6s_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 1127 ip6_savecontrol(in6p, mp, ip6, m) |
|
Line 1235 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; |
|
default: |
|
goto loopend; |
|
} |
|
|
|
ext = ip6_pullexthdr(m, off, nxt); |
|
if (ext == NULL) { |
ip6stat.ip6s_tooshort++; |
ip6stat.ip6s_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++; |
ip6stat.ip6s_tooshort++; |
return; |
return; |
} |
} |
#endif |
KASSERT(IP6_HDR_ALIGNED_P(ip6e)); |
|
|
switch (nxt) { |
switch (nxt) { |
case IPPROTO_DSTOPTS: |
case IPPROTO_DSTOPTS: |
if (!in6p->in6p_flags & IN6P_DSTOPTS) |
if (!in6p->in6p_flags & IN6P_DSTOPTS) |
break; |
break; |
|
|
/* |
*mp = sbcreatecontrol((void *)ip6e, elen, |
* We also require super-user privilege for |
IS2292(IPV6_2292DSTOPTS, IPV6_DSTOPTS), |
* the option. |
IPPROTO_IPV6); |
* See the comments on IN6_HOPOPTS. |
|
*/ |
|
if (!privileged) |
|
break; |
|
|
|
*mp = sbcreatecontrol((caddr_t)ip6e, elen, |
|
IPV6_DSTOPTS, |
|
IPPROTO_IPV6); |
|
if (*mp) |
if (*mp) |
mp = &(*mp)->m_next; |
mp = &(*mp)->m_next; |
break; |
break; |
Line 1179 ip6_savecontrol(in6p, mp, ip6, m) |
|
Line 1287 ip6_savecontrol(in6p, mp, ip6, m) |
|
if (!in6p->in6p_flags & IN6P_RTHDR) |
if (!in6p->in6p_flags & IN6P_RTHDR) |
break; |
break; |
|
|
*mp = sbcreatecontrol((caddr_t)ip6e, elen, |
*mp = sbcreatecontrol((void *)ip6e, elen, |
IPV6_RTHDR, |
IS2292(IPV6_2292RTHDR, IPV6_RTHDR), |
IPPROTO_IPV6); |
IPPROTO_IPV6); |
if (*mp) |
if (*mp) |
mp = &(*mp)->m_next; |
mp = &(*mp)->m_next; |
break; |
break; |
|
|
case IPPROTO_UDP: |
case IPPROTO_HOPOPTS: |
case IPPROTO_TCP: |
case IPPROTO_AH: /* is it possible? */ |
case IPPROTO_ICMPV6: |
break; |
|
|
default: |
default: |
/* |
/* |
* stop search if we encounter an upper |
* other cases have been filtered in the above. |
* layer protocol headers. |
* none will visit this case. here we supply |
|
* the code just in case (nxt overwritten or |
|
* other cases). |
*/ |
*/ |
|
m_freem(ext); |
goto loopend; |
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: |
; |
; |
} |
} |
if ((in6p->in6p_flags & IN6P_HOPOPTS) && privileged) { |
} |
/* to be done */ |
#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(m, off, nxt) |
|
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_DSTOPTS) && 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 (!n) |
|
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 1230 ip6_savecontrol(in6p, mp, ip6, m) |
|
Line 1428 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(m, off) |
struct mbuf *m; |
struct mbuf *m; |
int off; |
int off; |
Line 1238 ip6_get_prevhdr(m, off) |
|
Line 1436 ip6_get_prevhdr(m, 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 1246 ip6_get_prevhdr(m, off) |
|
Line 1444 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: |
Line 1262 ip6_get_prevhdr(m, off) |
|
Line 1460 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 1290 ip6_nexthdr(m, off, proto, nxtp) |
|
Line 1488 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 1305 ip6_nexthdr(m, off, proto, nxtp) |
|
Line 1506 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 1316 ip6_nexthdr(m, off, proto, nxtp) |
|
Line 1517 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; |
Line 1329 ip6_nexthdr(m, off, proto, nxtp) |
|
Line 1530 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; |
Line 1346 ip6_nexthdr(m, off, proto, nxtp) |
|
Line 1547 ip6_nexthdr(m, off, proto, nxtp) |
|
default: |
default: |
return -1; |
return -1; |
} |
} |
|
|
return -1; |
|
} |
} |
|
|
/* |
/* |
Line 1367 ip6_lasthdr(m, off, proto, nxtp) |
|
Line 1566 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 1381 ip6_lasthdr(m, off, proto, nxtp) |
|
Line 1580 ip6_lasthdr(m, off, proto, nxtp) |
|
} |
} |
} |
} |
|
|
|
struct m_tag * |
|
ip6_addaux(m) |
|
struct mbuf *m; |
|
{ |
|
struct m_tag *mtag; |
|
|
|
mtag = m_tag_find(m, PACKET_TAG_INET6, NULL); |
|
if (!mtag) { |
|
mtag = m_tag_get(PACKET_TAG_INET6, sizeof(struct ip6aux), |
|
M_NOWAIT); |
|
if (mtag) { |
|
m_tag_prepend(m, mtag); |
|
bzero(mtag + 1, sizeof(struct ip6aux)); |
|
} |
|
} |
|
return mtag; |
|
} |
|
|
|
struct m_tag * |
|
ip6_findaux(m) |
|
struct mbuf *m; |
|
{ |
|
struct m_tag *mtag; |
|
|
|
mtag = m_tag_find(m, PACKET_TAG_INET6, NULL); |
|
return mtag; |
|
} |
|
|
|
void |
|
ip6_delaux(m) |
|
struct mbuf *m; |
|
{ |
|
struct m_tag *mtag; |
|
|
|
mtag = m_tag_find(m, PACKET_TAG_INET6, NULL); |
|
if (mtag) |
|
m_tag_delete(m, mtag); |
|
} |
|
|
|
#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 s; |
|
|
|
s = sysctl_lookup(SYSCTLFN_CALL(rnode)); |
|
if (s || newp == NULL) |
|
return (s); |
|
|
|
s = splsoftnet(); |
|
ip6flow_reap(0); |
|
splx(s); |
|
|
|
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() |
|
*/ |
|
if (ip6flow_invalidate_all(tmp)) |
|
return ENOMEM; |
|
} else { |
|
/* |
|
* EINVAL if not a power of 2 |
|
*/ |
|
return EINVAL; |
|
} |
|
|
|
return (0); |
|
} |
|
#endif /* GATEWAY */ |
|
|
|
static int |
|
sysctl_net_inet6_ip6_rht0(SYSCTLFN_ARGS) |
|
{ |
|
int error, tmp; |
|
struct sysctlnode node; |
|
|
|
node = *rnode; |
|
tmp = ip6_rht0; |
|
node.sysctl_data = &tmp; |
|
error = sysctl_lookup(SYSCTLFN_CALL(&node)); |
|
if (error || newp == NULL) |
|
return error; |
|
|
|
switch (tmp) { |
|
case -1: /* disable processing */ |
|
case 0: /* disable for host, enable for router */ |
|
case 1: /* enable for all */ |
|
break; |
|
default: |
|
return EINVAL; |
|
} |
|
ip6_rht0 = tmp; |
|
return 0; |
|
} |
|
|
/* |
/* |
* System control for IP6 |
* System control for IP6 |
*/ |
*/ |
Line 1394 u_char inet6ctlerrmap[PRC_NCMDS] = { |
|
Line 1708 u_char inet6ctlerrmap[PRC_NCMDS] = { |
|
ENOPROTOOPT |
ENOPROTOOPT |
}; |
}; |
|
|
int |
SYSCTL_SETUP(sysctl_net_inet6_ip6_setup, "sysctl net.inet6.ip6 subtree setup") |
ip6_sysctl(name, namelen, oldp, oldlenp, newp, newlen) |
|
int *name; |
|
u_int namelen; |
|
void *oldp; |
|
size_t *oldlenp; |
|
void *newp; |
|
size_t newlen; |
|
{ |
{ |
int old, error; |
#ifdef RFC2292 |
|
#define IS2292(x, y) ((in6p->in6p_flags & IN6P_RFC2292) ? (x) : (y)) |
/* All sysctl names at this level are terminal. */ |
|
if (namelen != 1) |
|
return ENOTDIR; |
|
|
|
switch (name[0]) { |
|
|
|
case IPV6CTL_FORWARDING: |
|
return sysctl_int(oldp, oldlenp, newp, newlen, |
|
&ip6_forwarding); |
|
case IPV6CTL_SENDREDIRECTS: |
|
return sysctl_int(oldp, oldlenp, newp, newlen, |
|
&ip6_sendredirects); |
|
case IPV6CTL_DEFHLIM: |
|
return sysctl_int(oldp, oldlenp, newp, newlen, &ip6_defhlim); |
|
case IPV6CTL_MAXFRAGPACKETS: |
|
return sysctl_int(oldp, oldlenp, newp, newlen, |
|
&ip6_maxfragpackets); |
|
case IPV6CTL_ACCEPT_RTADV: |
|
return sysctl_int(oldp, oldlenp, newp, newlen, |
|
&ip6_accept_rtadv); |
|
case IPV6CTL_KEEPFAITH: |
|
return sysctl_int(oldp, oldlenp, newp, newlen, &ip6_keepfaith); |
|
case IPV6CTL_LOG_INTERVAL: |
|
return sysctl_int(oldp, oldlenp, newp, newlen, |
|
&ip6_log_interval); |
|
case IPV6CTL_HDRNESTLIMIT: |
|
return sysctl_int(oldp, oldlenp, newp, newlen, |
|
&ip6_hdrnestlimit); |
|
case IPV6CTL_DAD_COUNT: |
|
return sysctl_int(oldp, oldlenp, newp, newlen, &ip6_dad_count); |
|
case IPV6CTL_AUTO_FLOWLABEL: |
|
return sysctl_int(oldp, oldlenp, newp, newlen, |
|
&ip6_auto_flowlabel); |
|
case IPV6CTL_DEFMCASTHLIM: |
|
return sysctl_int(oldp, oldlenp, newp, newlen, |
|
&ip6_defmcasthlim); |
|
#if NGIF > 0 |
|
case IPV6CTL_GIF_HLIM: |
|
return sysctl_int(oldp, oldlenp, newp, newlen, |
|
&ip6_gif_hlim); |
|
#endif |
|
case IPV6CTL_KAME_VERSION: |
|
return sysctl_rdstring(oldp, oldlenp, newp, __KAME_VERSION); |
|
case IPV6CTL_USE_DEPRECATED: |
|
return sysctl_int(oldp, oldlenp, newp, newlen, |
|
&ip6_use_deprecated); |
|
case IPV6CTL_RR_PRUNE: |
|
return sysctl_int(oldp, oldlenp, newp, newlen, &ip6_rr_prune); |
|
case IPV6CTL_V6ONLY: |
|
#ifdef INET6_BINDV6ONLY |
|
return sysctl_rdint(oldp, oldlenp, newp, ip6_v6only); |
|
#else |
#else |
return sysctl_int(oldp, oldlenp, newp, newlen, &ip6_v6only); |
#define IS2292(x, y) (y) |
#endif |
#endif |
case IPV6CTL_ANONPORTMIN: |
|
old = ip6_anonportmin; |
sysctl_createv(clog, 0, NULL, NULL, |
error = sysctl_int(oldp, oldlenp, newp, newlen, |
CTLFLAG_PERMANENT, |
&ip6_anonportmin); |
CTLTYPE_NODE, "net", NULL, |
if (ip6_anonportmin >= ip6_anonportmax || ip6_anonportmin < 0 || |
NULL, 0, NULL, 0, |
ip6_anonportmin > 65535 |
CTL_NET, CTL_EOL); |
#ifndef IPNOPRIVPORTS |
sysctl_createv(clog, 0, NULL, NULL, |
|| ip6_anonportmin < IPV6PORT_RESERVED |
CTLFLAG_PERMANENT, |
#endif |
CTLTYPE_NODE, "inet6", |
) { |
SYSCTL_DESCR("PF_INET6 related settings"), |
ip6_anonportmin = old; |
NULL, 0, NULL, 0, |
return (EINVAL); |
CTL_NET, PF_INET6, CTL_EOL); |
} |
sysctl_createv(clog, 0, NULL, NULL, |
return (error); |
CTLFLAG_PERMANENT, |
case IPV6CTL_ANONPORTMAX: |
CTLTYPE_NODE, "ip6", |
old = ip6_anonportmax; |
SYSCTL_DESCR("IPv6 related settings"), |
error = sysctl_int(oldp, oldlenp, newp, newlen, |
NULL, 0, NULL, 0, |
&ip6_anonportmax); |
CTL_NET, PF_INET6, IPPROTO_IPV6, CTL_EOL); |
if (ip6_anonportmin >= ip6_anonportmax || ip6_anonportmax < 0 || |
|
ip6_anonportmax > 65535 |
sysctl_createv(clog, 0, NULL, NULL, |
#ifndef IPNOPRIVPORTS |
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
|| ip6_anonportmax < IPV6PORT_RESERVED |
CTLTYPE_INT, "forwarding", |
#endif |
SYSCTL_DESCR("Enable forwarding of INET6 datagrams"), |
) { |
NULL, 0, &ip6_forwarding, 0, |
ip6_anonportmax = old; |
CTL_NET, PF_INET6, IPPROTO_IPV6, |
return (EINVAL); |
IPV6CTL_FORWARDING, CTL_EOL); |
} |
sysctl_createv(clog, 0, NULL, NULL, |
return (error); |
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
|
CTLTYPE_INT, "redirect", |
|
SYSCTL_DESCR("Enable sending of ICMPv6 redirect messages"), |
|
NULL, 0, &ip6_sendredirects, 0, |
|
CTL_NET, PF_INET6, IPPROTO_IPV6, |
|
IPV6CTL_SENDREDIRECTS, CTL_EOL); |
|
sysctl_createv(clog, 0, NULL, NULL, |
|
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
|
CTLTYPE_INT, "hlim", |
|
SYSCTL_DESCR("Hop limit for an INET6 datagram"), |
|
NULL, 0, &ip6_defhlim, 0, |
|
CTL_NET, PF_INET6, IPPROTO_IPV6, |
|
IPV6CTL_DEFHLIM, CTL_EOL); |
|
#ifdef notyet |
|
sysctl_createv(clog, 0, NULL, NULL, |
|
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
|
CTLTYPE_INT, "mtu", NULL, |
|
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, "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); |
|
#if NGIF > 0 |
|
sysctl_createv(clog, 0, NULL, NULL, |
|
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
|
CTLTYPE_INT, "gifhlim", |
|
SYSCTL_DESCR("Default hop limit for a gif tunnel datagram"), |
|
NULL, 0, &ip6_gif_hlim, 0, |
|
CTL_NET, PF_INET6, IPPROTO_IPV6, |
|
IPV6CTL_GIF_HLIM, CTL_EOL); |
|
#endif /* NGIF */ |
|
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 |
|
|CTLFLAG_READWRITE, |
|
#endif |
|
CTLTYPE_INT, "v6only", |
|
SYSCTL_DESCR("Disallow PF_INET6 sockets from connecting " |
|
"to PF_INET sockets"), |
|
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 |
#ifndef IPNOPRIVPORTS |
case IPV6CTL_LOWPORTMIN: |
sysctl_createv(clog, 0, NULL, NULL, |
old = ip6_lowportmin; |
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
error = sysctl_int(oldp, oldlenp, newp, newlen, |
CTLTYPE_INT, "lowportmin", |
&ip6_lowportmin); |
SYSCTL_DESCR("Lowest privileged ephemeral port number " |
if (ip6_lowportmin >= ip6_lowportmax || |
"to assign"), |
ip6_lowportmin > IPV6PORT_RESERVEDMAX || |
sysctl_net_inet_ip_ports, 0, &ip6_lowportmin, 0, |
ip6_lowportmin < IPV6PORT_RESERVEDMIN) { |
CTL_NET, PF_INET6, IPPROTO_IPV6, |
ip6_lowportmin = old; |
IPV6CTL_LOWPORTMIN, CTL_EOL); |
return (EINVAL); |
sysctl_createv(clog, 0, NULL, NULL, |
} |
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
return (error); |
CTLTYPE_INT, "lowportmax", |
case IPV6CTL_LOWPORTMAX: |
SYSCTL_DESCR("Highest privileged ephemeral port number " |
old = ip6_lowportmax; |
"to assign"), |
error = sysctl_int(oldp, oldlenp, newp, newlen, |
sysctl_net_inet_ip_ports, 0, &ip6_lowportmax, 0, |
&ip6_lowportmax); |
CTL_NET, PF_INET6, IPPROTO_IPV6, |
if (ip6_lowportmin >= ip6_lowportmax || |
IPV6CTL_LOWPORTMAX, CTL_EOL); |
ip6_lowportmax > IPV6PORT_RESERVEDMAX || |
#endif /* IPNOPRIVPORTS */ |
ip6_lowportmax < IPV6PORT_RESERVEDMIN) { |
sysctl_createv(clog, 0, NULL, NULL, |
ip6_lowportmax = old; |
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
return (EINVAL); |
CTLTYPE_INT, "use_tempaddr", |
} |
SYSCTL_DESCR("Use temporary address"), |
return (error); |
NULL, 0, &ip6_use_tempaddr, 0, |
#endif |
CTL_NET, PF_INET6, IPPROTO_IPV6, |
case IPV6CTL_MAXFRAGS: |
CTL_CREATE, CTL_EOL); |
return sysctl_int(oldp, oldlenp, newp, newlen, &ip6_maxfrags); |
sysctl_createv(clog, 0, NULL, NULL, |
default: |
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
return EOPNOTSUPP; |
CTLTYPE_INT, "temppltime", |
} |
SYSCTL_DESCR("preferred lifetime of a temporary address"), |
/* NOTREACHED */ |
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"), |
|
NULL, 0, &ip6stat, sizeof(ip6stat), |
|
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 |
|
sysctl_createv(clog, 0, NULL, NULL, |
|
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
|
CTLTYPE_INT, "rht0", |
|
SYSCTL_DESCR("Processing of routing header type 0 (IPv6)"), |
|
sysctl_net_inet6_ip6_rht0, 0, &ip6_rht0, 0, |
|
CTL_NET, PF_INET6, IPPROTO_IPV6, |
|
CTL_CREATE, CTL_EOL); |
} |
} |