version 1.83, 2006/03/05 23:47:08 |
version 1.90.2.1.2.2, 2007/09/23 21:36:35 |
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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 111 __KERNEL_RCSID(0, "$NetBSD$"); |
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Line 112 __KERNEL_RCSID(0, "$NetBSD$"); |
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#include <netinet6/ipsec.h> |
#include <netinet6/ipsec.h> |
#endif |
#endif |
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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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#include "faith.h" |
#include "faith.h" |
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} |
} |
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static void |
static void |
ip6_init2(dummy) |
ip6_init2(void *dummy) |
void *dummy; |
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{ |
{ |
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/* nd6_timer_init */ |
/* nd6_timer_init */ |
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int nxt, ours = 0; |
int nxt, ours = 0; |
struct ifnet *deliverifp = NULL; |
struct ifnet *deliverifp = NULL; |
int srcrt = 0; |
int srcrt = 0; |
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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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*/ |
*/ |
#ifdef IPSEC |
#ifdef IPSEC |
if (!ipsec_getnhist(m)) |
if (!ipsec_getnhist(m)) |
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#elif defined(FAST_IPSEC) |
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if (!ipsec_indone(m)) |
#else |
#else |
if (1) |
if (1) |
#endif |
#endif |
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* dst are the loopback address and the receiving interface |
* dst are the loopback address and the receiving interface |
* is not loopback. |
* is not loopback. |
*/ |
*/ |
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if (__predict_false( |
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m_makewritable(&m, 0, sizeof(struct ip6_hdr), M_DONTWAIT))) |
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goto bad; |
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ip6 = mtod(m, struct ip6_hdr *); |
if (in6_clearscope(&ip6->ip6_src) || in6_clearscope(&ip6->ip6_dst)) { |
if (in6_clearscope(&ip6->ip6_src) || in6_clearscope(&ip6->ip6_dst)) { |
ip6stat.ip6s_badscope++; /* XXX */ |
ip6stat.ip6s_badscope++; /* XXX */ |
goto bad; |
goto bad; |
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goto bad; |
goto bad; |
} |
} |
#endif |
#endif |
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#ifdef FAST_IPSEC |
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/* |
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* enforce IPsec policy checking if we are seeing last header. |
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* note that we do not visit this with protocols with pcb layer |
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* code - like udp/tcp/raw ip. |
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*/ |
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if ((inet6sw[ip_protox[nxt]].pr_flags & PR_LASTHDR) != 0) { |
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/* |
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* Check if the packet has already had IPsec processing |
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* done. If so, then just pass it along. This tag gets |
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* set during AH, ESP, etc. input handling, before the |
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* packet is returned to the ip input queue for delivery. |
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*/ |
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mtag = m_tag_find(m, PACKET_TAG_IPSEC_IN_DONE, NULL); |
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s = splsoftnet(); |
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if (mtag != NULL) { |
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tdbi = (struct tdb_ident *)(mtag + 1); |
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sp = ipsec_getpolicy(tdbi, IPSEC_DIR_INBOUND); |
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} else { |
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sp = ipsec_getpolicybyaddr(m, IPSEC_DIR_INBOUND, |
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IP_FORWARDING, &error); |
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} |
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if (sp != NULL) { |
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/* |
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* Check security policy against packet attributes. |
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*/ |
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error = ipsec_in_reject(sp, m); |
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KEY_FREESP(&sp); |
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} else { |
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/* XXX error stat??? */ |
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error = EINVAL; |
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DPRINTF(("ip6_input: no SP, packet discarded\n"));/*XXX*/ |
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} |
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splx(s); |
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if (error) |
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goto bad; |
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} |
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#endif /* FAST_IPSEC */ |
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nxt = (*inet6sw[ip6_protox[nxt]].pr_input)(&m, &off, nxt); |
nxt = (*inet6sw[ip6_protox[nxt]].pr_input)(&m, &off, nxt); |
} |
} |
Line 1030 ip6_savecontrol(in6p, mp, ip6, m) |
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Line 1087 ip6_savecontrol(in6p, mp, ip6, m) |
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struct ip6_hdr *ip6; |
struct ip6_hdr *ip6; |
struct mbuf *m; |
struct mbuf *m; |
{ |
{ |
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#ifdef RFC2292 |
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#define IS2292(x, y) ((in6p->in6p_flags & IN6P_RFC2292) ? (x) : (y)) |
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#else |
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#define IS2292(x, y) (y) |
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#endif |
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#ifdef SO_TIMESTAMP |
#ifdef SO_TIMESTAMP |
if (in6p->in6p_socket->so_options & SO_TIMESTAMP) { |
if (in6p->in6p_socket->so_options & SO_TIMESTAMP) { |
Line 1042 ip6_savecontrol(in6p, mp, ip6, m) |
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Line 1104 ip6_savecontrol(in6p, mp, ip6, m) |
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mp = &(*mp)->m_next; |
mp = &(*mp)->m_next; |
} |
} |
#endif |
#endif |
if (in6p->in6p_flags & IN6P_RECVDSTADDR) { |
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*mp = sbcreatecontrol((caddr_t) &ip6->ip6_dst, |
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sizeof(struct in6_addr), IPV6_RECVDSTADDR, IPPROTO_IPV6); |
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if (*mp) |
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mp = &(*mp)->m_next; |
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} |
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#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 */ |
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/* ip6_srcroute doesn't do what we want here, need to fix */ |
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if (in6p->in6p_flags & IPV6P_RECVRETOPTS) |
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/* broken */ |
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#endif |
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/* 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; |
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bcopy(&ip6->ip6_dst, &pi6.ipi6_addr, sizeof(struct in6_addr)); |
bcopy(&ip6->ip6_dst, &pi6.ipi6_addr, sizeof(struct in6_addr)); |
in6_clearscope(&pi6.ipi6_addr); /* XXX */ |
in6_clearscope(&pi6.ipi6_addr); /* XXX */ |
pi6.ipi6_ifindex = (m && m->m_pkthdr.rcvif) |
pi6.ipi6_ifindex = m->m_pkthdr.rcvif ? |
? m->m_pkthdr.rcvif->if_index |
m->m_pkthdr.rcvif->if_index : 0; |
: 0; |
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*mp = sbcreatecontrol((caddr_t) &pi6, |
*mp = sbcreatecontrol((caddr_t) &pi6, |
sizeof(struct in6_pktinfo), IPV6_PKTINFO, IPPROTO_IPV6); |
sizeof(struct in6_pktinfo), |
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IS2292(IPV6_2292PKTINFO, IPV6_PKTINFO), IPPROTO_IPV6); |
if (*mp) |
if (*mp) |
mp = &(*mp)->m_next; |
mp = &(*mp)->m_next; |
} |
} |
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if (in6p->in6p_flags & IN6P_HOPLIMIT) { |
if (in6p->in6p_flags & IN6P_HOPLIMIT) { |
int hlim = ip6->ip6_hlim & 0xff; |
int hlim = ip6->ip6_hlim & 0xff; |
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*mp = sbcreatecontrol((caddr_t) &hlim, sizeof(int), |
*mp = sbcreatecontrol((caddr_t) &hlim, sizeof(int), |
IPV6_HOPLIMIT, IPPROTO_IPV6); |
IS2292(IPV6_2292HOPLIMIT, IPV6_HOPLIMIT), IPPROTO_IPV6); |
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if (*mp) |
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mp = &(*mp)->m_next; |
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} |
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if ((in6p->in6p_flags & IN6P_TCLASS) != 0) { |
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u_int32_t flowinfo; |
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int tclass; |
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flowinfo = (u_int32_t)ntohl(ip6->ip6_flow & IPV6_FLOWINFO_MASK); |
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flowinfo >>= 20; |
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tclass = flowinfo & 0xff; |
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*mp = sbcreatecontrol((caddr_t)&tclass, sizeof(tclass), |
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IPV6_TCLASS, IPPROTO_IPV6); |
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if (*mp) |
if (*mp) |
mp = &(*mp)->m_next; |
mp = &(*mp)->m_next; |
} |
} |
/* IN6P_NEXTHOP - for outgoing packet only */ |
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/* |
/* |
* IPV6_HOPOPTS socket option. Recall that we required super-user |
* IPV6_HOPOPTS socket option. Recall that we required super-user |
* privilege for the option (see ip6_ctloutput), but it might be too |
* privilege for the option (see ip6_ctloutput), but it might be too |
* strict, since there might be some hop-by-hop options which can be |
* strict, since there might be some hop-by-hop options which can be |
* returned to normal user. |
* returned to normal user. |
* See also RFC 2292 section 6. |
* See also RFC3542 section 8 (or RFC2292 section 6). |
*/ |
*/ |
if ((in6p->in6p_flags & IN6P_HOPOPTS) != 0) { |
if ((in6p->in6p_flags & IN6P_HOPOPTS) != 0) { |
/* |
/* |
Line 1119 ip6_savecontrol(in6p, mp, ip6, m) |
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Line 1187 ip6_savecontrol(in6p, mp, ip6, m) |
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* 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((caddr_t)hbh, hbhlen, |
IPV6_HOPOPTS, IPPROTO_IPV6); |
IS2292(IPV6_2292HOPOPTS, IPV6_HOPOPTS), |
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IPPROTO_IPV6); |
if (*mp) |
if (*mp) |
mp = &(*mp)->m_next; |
mp = &(*mp)->m_next; |
m_freem(ext); |
m_freem(ext); |
Line 1141 ip6_savecontrol(in6p, mp, ip6, m) |
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Line 1210 ip6_savecontrol(in6p, mp, ip6, m) |
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* 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 = NULL; |
struct ip6_ext *ip6e = NULL; |
int elen; |
int elen; |
struct mbuf *ext = NULL; |
struct mbuf *ext = NULL; |
Line 1183 ip6_savecontrol(in6p, mp, ip6, m) |
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Line 1252 ip6_savecontrol(in6p, mp, ip6, m) |
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break; |
break; |
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*mp = sbcreatecontrol((caddr_t)ip6e, elen, |
*mp = sbcreatecontrol((caddr_t)ip6e, elen, |
IPV6_DSTOPTS, IPPROTO_IPV6); |
IS2292(IPV6_2292DSTOPTS, IPV6_DSTOPTS), |
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IPPROTO_IPV6); |
if (*mp) |
if (*mp) |
mp = &(*mp)->m_next; |
mp = &(*mp)->m_next; |
break; |
break; |
Line 1193 ip6_savecontrol(in6p, mp, ip6, m) |
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Line 1263 ip6_savecontrol(in6p, mp, ip6, m) |
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break; |
break; |
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*mp = sbcreatecontrol((caddr_t)ip6e, elen, |
*mp = sbcreatecontrol((caddr_t)ip6e, elen, |
IPV6_RTHDR, IPPROTO_IPV6); |
IS2292(IPV6_2292RTHDR, IPV6_RTHDR), |
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IPPROTO_IPV6); |
if (*mp) |
if (*mp) |
mp = &(*mp)->m_next; |
mp = &(*mp)->m_next; |
break; |
break; |
Line 1225 ip6_savecontrol(in6p, mp, ip6, m) |
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Line 1296 ip6_savecontrol(in6p, mp, ip6, m) |
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; |
; |
} |
} |
} |
} |
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#undef IS2292 |
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void |
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ip6_notify_pmtu(struct in6pcb *in6p, struct sockaddr_in6 *dst, uint32_t *mtu) |
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{ |
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struct socket *so; |
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struct mbuf *m_mtu; |
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struct ip6_mtuinfo mtuctl; |
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so = in6p->in6p_socket; |
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if (mtu == NULL) |
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return; |
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#ifdef DIAGNOSTIC |
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if (so == NULL) /* I believe this is impossible */ |
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panic("ip6_notify_pmtu: socket is NULL"); |
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#endif |
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memset(&mtuctl, 0, sizeof(mtuctl)); /* zero-clear for safety */ |
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mtuctl.ip6m_mtu = *mtu; |
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mtuctl.ip6m_addr = *dst; |
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if (sa6_recoverscope(&mtuctl.ip6m_addr)) |
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return; |
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if ((m_mtu = sbcreatecontrol((caddr_t)&mtuctl, sizeof(mtuctl), |
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IPV6_PATHMTU, IPPROTO_IPV6)) == NULL) |
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return; |
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if (sbappendaddr(&so->so_rcv, (struct sockaddr *)dst, NULL, m_mtu) |
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== 0) { |
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m_freem(m_mtu); |
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/* XXX: should count statistics */ |
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} else |
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sorwakeup(so); |
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return; |
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} |
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/* |
/* |
* pull single extension header from mbuf chain. returns single mbuf that |
* pull single extension header from mbuf chain. returns single mbuf that |
Line 1430 ip6_lasthdr(m, off, proto, nxtp) |
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Line 1540 ip6_lasthdr(m, off, proto, nxtp) |
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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; |
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m_tag_delete(m, mtag); |
m_tag_delete(m, mtag); |
} |
} |
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static int |
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sysctl_net_inet6_ip6_rht0(SYSCTLFN_ARGS) |
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{ |
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int error, tmp; |
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struct sysctlnode node; |
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node = *rnode; |
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tmp = ip6_rht0; |
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node.sysctl_data = &tmp; |
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error = sysctl_lookup(SYSCTLFN_CALL(&node)); |
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if (error || newp == NULL) |
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return error; |
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switch (tmp) { |
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case -1: /* disable processing */ |
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case 0: /* disable for host, enable for router */ |
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case 1: /* enable for all */ |
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break; |
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default: |
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return EINVAL; |
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} |
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ip6_rht0 = tmp; |
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return 0; |
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} |
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/* |
/* |
* System control for IP6 |
* System control for IP6 |
*/ |
*/ |
Line 1498 u_char inet6ctlerrmap[PRC_NCMDS] = { |
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Line 1633 u_char inet6ctlerrmap[PRC_NCMDS] = { |
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SYSCTL_SETUP(sysctl_net_inet6_ip6_setup, "sysctl net.inet6.ip6 subtree setup") |
SYSCTL_SETUP(sysctl_net_inet6_ip6_setup, "sysctl net.inet6.ip6 subtree setup") |
{ |
{ |
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#ifdef RFC2292 |
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#define IS2292(x, y) ((in6p->in6p_flags & IN6P_RFC2292) ? (x) : (y)) |
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#else |
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#define IS2292(x, y) (y) |
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#endif |
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sysctl_createv(clog, 0, NULL, NULL, |
sysctl_createv(clog, 0, NULL, NULL, |
CTLFLAG_PERMANENT, |
CTLFLAG_PERMANENT, |
Line 1761 SYSCTL_SETUP(sysctl_net_inet6_ip6_setup, |
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Line 1901 SYSCTL_SETUP(sysctl_net_inet6_ip6_setup, |
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NULL, 0, &ip6_mcast_pmtu, 0, |
NULL, 0, &ip6_mcast_pmtu, 0, |
CTL_NET, PF_INET6, IPPROTO_IPV6, |
CTL_NET, PF_INET6, IPPROTO_IPV6, |
CTL_CREATE, CTL_EOL); |
CTL_CREATE, CTL_EOL); |
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sysctl_createv(clog, 0, NULL, NULL, |
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CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
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CTLTYPE_INT, "rht0", |
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SYSCTL_DESCR("Processing of routing header type 0 (IPv6)"), |
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sysctl_net_inet6_ip6_rht0, 0, &ip6_rht0, 0, |
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CTL_NET, PF_INET6, IPPROTO_IPV6, |
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CTL_CREATE, CTL_EOL); |
} |
} |