version 1.302, 2012/06/25 15:28:39 |
version 1.302.2.2, 2013/06/23 06:20:25 |
Line 141 __KERNEL_RCSID(0, "$NetBSD$"); |
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Line 141 __KERNEL_RCSID(0, "$NetBSD$"); |
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#endif |
#endif |
#include <netinet/portalgo.h> |
#include <netinet/portalgo.h> |
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#ifdef FAST_IPSEC |
#ifdef IPSEC |
#include <netipsec/ipsec.h> |
#include <netipsec/ipsec.h> |
#include <netipsec/key.h> |
#endif |
#endif /* FAST_IPSEC*/ |
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#ifndef IPFORWARDING |
#ifndef IPFORWARDING |
#ifdef GATEWAY |
#ifdef GATEWAY |
Line 405 ip_input(struct mbuf *m) |
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Line 404 ip_input(struct mbuf *m) |
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int downmatch; |
int downmatch; |
int checkif; |
int checkif; |
int srcrt = 0; |
int srcrt = 0; |
#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 error, s; |
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#endif /* FAST_IPSEC */ |
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MCLAIM(m, &ip_rx_mowner); |
MCLAIM(m, &ip_rx_mowner); |
KASSERT((m->m_flags & M_PKTHDR) != 0); |
KASSERT((m->m_flags & M_PKTHDR) != 0); |
Line 550 ip_input(struct mbuf *m) |
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Line 543 ip_input(struct mbuf *m) |
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* let ipfilter look at packet on the wire, |
* let ipfilter look at packet on the wire, |
* not the decapsulated packet. |
* not the decapsulated packet. |
*/ |
*/ |
#if defined(FAST_IPSEC) |
#if defined(IPSEC) |
if (!ipsec_indone(m)) |
if (!ipsec_indone(m)) |
#else |
#else |
if (1) |
if (1) |
Line 732 ip_input(struct mbuf *m) |
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Line 725 ip_input(struct mbuf *m) |
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IP_STATINC(IP_STAT_CANTFORWARD); |
IP_STATINC(IP_STAT_CANTFORWARD); |
return; |
return; |
} |
} |
#ifdef FAST_IPSEC |
#ifdef IPSEC |
mtag = m_tag_find(m, PACKET_TAG_IPSEC_IN_DONE, NULL); |
/* Perform IPsec, if any. */ |
s = splsoftnet(); |
if (ipsec4_input(m, IP_FORWARDING | (ip_directedbcast ? |
if (mtag != NULL) { |
IP_ALLOWBROADCAST : 0)) != 0) { |
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) { /* NB: can happen if error */ |
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splx(s); |
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/*XXX error stat???*/ |
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DPRINTF(("ip_input: no SP for forwarding\n")); /*XXX*/ |
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goto bad; |
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} |
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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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splx(s); |
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if (error) { |
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IP_STATINC(IP_STAT_CANTFORWARD); |
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goto bad; |
goto bad; |
} |
} |
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#endif |
/* |
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* Peek at the outbound SP for this packet to determine if |
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* it's a Fast Forward candidate. |
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*/ |
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mtag = m_tag_find(m, PACKET_TAG_IPSEC_PENDING_TDB, NULL); |
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if (mtag != NULL) |
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m->m_flags &= ~M_CANFASTFWD; |
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else { |
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s = splsoftnet(); |
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sp = ipsec4_checkpolicy(m, IPSEC_DIR_OUTBOUND, |
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(IP_FORWARDING | |
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(ip_directedbcast ? IP_ALLOWBROADCAST : 0)), |
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&error, NULL); |
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if (sp != NULL) { |
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m->m_flags &= ~M_CANFASTFWD; |
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KEY_FREESP(&sp); |
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} |
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splx(s); |
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} |
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#endif /* FAST_IPSEC */ |
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ip_forward(m, srcrt); |
ip_forward(m, srcrt); |
} |
} |
return; |
return; |
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hlen = ip->ip_hl << 2; |
hlen = ip->ip_hl << 2; |
} |
} |
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#ifdef FAST_IPSEC |
#ifdef IPSEC |
/* |
/* |
* enforce IPsec policy checking if we are seeing last header. |
* Enforce IPsec policy checking if we are seeing last header. |
* note that we do not visit this with protocols with pcb layer |
* Note that we do not visit this with protocols with PCB layer |
* code - like udp/tcp/raw ip. |
* code - like UDP/TCP/raw IP. |
*/ |
*/ |
if ((inetsw[ip_protox[ip->ip_p]].pr_flags & PR_LASTHDR) != 0) { |
if ((inetsw[ip_protox[ip->ip_p]].pr_flags & PR_LASTHDR) != 0) { |
/* |
if (ipsec4_input(m, 0) != 0) { |
* 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(("ip_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; |
goto bad; |
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} |
} |
} |
#endif /* FAST_IPSEC */ |
#endif |
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/* |
/* |
* Switch out to protocol's input routine. |
* Switch out to protocol's input routine. |
Line 1422 ip_forward(struct mbuf *m, int srcrt) |
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Line 1347 ip_forward(struct mbuf *m, int srcrt) |
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if ((rt = rtcache_validate(&ipforward_rt)) != NULL) |
if ((rt = rtcache_validate(&ipforward_rt)) != NULL) |
destmtu = rt->rt_ifp->if_mtu; |
destmtu = rt->rt_ifp->if_mtu; |
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#ifdef IPSEC |
#if defined(FAST_IPSEC) |
(void)ipsec4_forward(mcopy, &destmtu); |
{ |
#endif |
/* |
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* If the packet is routed over IPsec tunnel, tell the |
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* originator the tunnel MTU. |
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* tunnel MTU = if MTU - sizeof(IP) - ESP/AH hdrsiz |
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* XXX quickhack!!! |
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*/ |
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struct secpolicy *sp; |
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int ipsecerror; |
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size_t ipsechdr; |
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struct route *ro; |
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sp = ipsec4_getpolicybyaddr(mcopy, |
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IPSEC_DIR_OUTBOUND, IP_FORWARDING, |
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&ipsecerror); |
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if (sp != NULL) { |
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/* count IPsec header size */ |
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ipsechdr = ipsec4_hdrsiz(mcopy, |
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IPSEC_DIR_OUTBOUND, NULL); |
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/* |
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* find the correct route for outer IPv4 |
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* header, compute tunnel MTU. |
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*/ |
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if (sp->req != NULL |
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&& sp->req->sav != NULL |
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&& sp->req->sav->sah != NULL) { |
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ro = &sp->req->sav->sah->sa_route; |
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rt = rtcache_validate(ro); |
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if (rt && rt->rt_ifp) { |
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destmtu = |
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rt->rt_rmx.rmx_mtu ? |
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rt->rt_rmx.rmx_mtu : |
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rt->rt_ifp->if_mtu; |
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destmtu -= ipsechdr; |
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} |
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} |
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KEY_FREESP(&sp); |
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} |
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} |
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#endif /*defined(FAST_IPSEC)*/ |
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IP_STATINC(IP_STAT_CANTFRAG); |
IP_STATINC(IP_STAT_CANTFRAG); |
break; |
break; |
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Line 1906 sysctl_net_inet_ip_setup(struct sysctllo |
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Line 1787 sysctl_net_inet_ip_setup(struct sysctllo |
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CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
CTLTYPE_STRING, "selected", |
CTLTYPE_STRING, "selected", |
SYSCTL_DESCR("selected algorithm"), |
SYSCTL_DESCR("selected algorithm"), |
sysctl_portalgo_selected, 0, NULL, PORTALGO_MAXLEN, |
sysctl_portalgo_selected4, 0, NULL, PORTALGO_MAXLEN, |
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CTL_CREATE, CTL_EOL); |
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sysctl_createv(clog, 0, &portalgo_node, NULL, |
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CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
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CTLTYPE_STRUCT, "reserve", |
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SYSCTL_DESCR("bitmap of reserved ports"), |
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sysctl_portalgo_reserve4, 0, NULL, 0, |
CTL_CREATE, CTL_EOL); |
CTL_CREATE, CTL_EOL); |
} |
} |
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