version 1.166, 2003/06/15 02:49:33 |
version 1.174, 2003/08/22 21:53:03 |
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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. |
* |
* |
Line 108 __KERNEL_RCSID(0, "$NetBSD$"); |
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Line 104 __KERNEL_RCSID(0, "$NetBSD$"); |
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#include "opt_pfil_hooks.h" |
#include "opt_pfil_hooks.h" |
#include "opt_ipsec.h" |
#include "opt_ipsec.h" |
#include "opt_mrouting.h" |
#include "opt_mrouting.h" |
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#include "opt_mbuftrace.h" |
#include "opt_inet_csum.h" |
#include "opt_inet_csum.h" |
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#include <sys/param.h> |
#include <sys/param.h> |
Line 150 __KERNEL_RCSID(0, "$NetBSD$"); |
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Line 147 __KERNEL_RCSID(0, "$NetBSD$"); |
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#include <netinet6/ipsec.h> |
#include <netinet6/ipsec.h> |
#include <netkey/key.h> |
#include <netkey/key.h> |
#endif |
#endif |
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#ifdef FAST_IPSEC |
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#include <netipsec/ipsec.h> |
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#include <netipsec/key.h> |
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#endif /* FAST_IPSEC*/ |
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#ifndef IPFORWARDING |
#ifndef IPFORWARDING |
#ifdef GATEWAY |
#ifdef GATEWAY |
Line 222 struct in_ifaddrhead in_ifaddr; |
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Line 223 struct in_ifaddrhead in_ifaddr; |
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struct in_ifaddrhashhead *in_ifaddrhashtbl; |
struct in_ifaddrhashhead *in_ifaddrhashtbl; |
u_long in_multihash; /* size of hash table - 1 */ |
u_long in_multihash; /* size of hash table - 1 */ |
int in_multientries; /* total number of addrs */ |
int in_multientries; /* total number of addrs */ |
struct in_multihead in_multi; |
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struct in_multihashhead *in_multihashtbl; |
struct in_multihashhead *in_multihashtbl; |
struct ifqueue ipintrq; |
struct ifqueue ipintrq; |
struct ipstat ipstat; |
struct ipstat ipstat; |
Line 432 ip_input(struct mbuf *m) |
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Line 432 ip_input(struct mbuf *m) |
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int hlen = 0, mff, len; |
int hlen = 0, mff, len; |
int downmatch; |
int downmatch; |
int checkif; |
int checkif; |
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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 /* FAST_IPSEC */ |
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MCLAIM(m, &ip_rx_mowner); |
MCLAIM(m, &ip_rx_mowner); |
#ifdef DIAGNOSTIC |
#ifdef DIAGNOSTIC |
Line 589 ip_input(struct mbuf *m) |
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Line 596 ip_input(struct mbuf *m) |
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if (1) |
if (1) |
#endif |
#endif |
{ |
{ |
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struct in_addr odst; |
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odst = ip->ip_dst; |
if (pfil_run_hooks(&inet_pfil_hook, &m, m->m_pkthdr.rcvif, |
if (pfil_run_hooks(&inet_pfil_hook, &m, m->m_pkthdr.rcvif, |
PFIL_IN) != 0) |
PFIL_IN) != 0) |
return; |
return; |
if (m == NULL) |
if (m == NULL) |
return; |
return; |
ip = mtod(m, struct ip *); |
ip = mtod(m, struct ip *); |
hlen = ip->ip_hl << 2; |
hlen = ip->ip_hl << 2; |
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srcrt = (odst.s_addr != ip->ip_dst.s_addr); |
} |
} |
#endif /* PFIL_HOOKS */ |
#endif /* PFIL_HOOKS */ |
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Line 761 ip_input(struct mbuf *m) |
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Line 772 ip_input(struct mbuf *m) |
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goto bad; |
goto bad; |
} |
} |
#endif |
#endif |
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#ifdef FAST_IPSEC |
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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) { /* 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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ip_forward(m, 0); |
/* |
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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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ipstat.ips_cantforward++; |
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goto bad; |
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} |
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#endif /* FAST_IPSEC */ |
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ip_forward(m, srcrt); |
} |
} |
return; |
return; |
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IPQ_UNLOCK(); |
IPQ_UNLOCK(); |
} |
} |
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#ifdef IPSEC |
#if defined(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 |
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goto bad; |
goto bad; |
} |
} |
#endif |
#endif |
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#if 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 ((inetsw[ip_protox[ip->ip_p]].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(("ip_input: no SP, packet discarded\n"));/*XXX*/ |
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goto bad; |
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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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/* |
/* |
* Switch out to protocol's input routine. |
* Switch out to protocol's input routine. |
Line 1565 ip_forward(m, srcrt) |
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Line 1643 ip_forward(m, srcrt) |
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struct mbuf *mcopy; |
struct mbuf *mcopy; |
n_long dest; |
n_long dest; |
struct ifnet *destifp; |
struct ifnet *destifp; |
#ifdef IPSEC |
#if defined(IPSEC) || defined(FAST_IPSEC) |
struct ifnet dummyifp; |
struct ifnet dummyifp; |
#endif |
#endif |
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Line 1663 ip_forward(m, srcrt) |
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Line 1741 ip_forward(m, srcrt) |
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(void)ipsec_setsocket(m, NULL); |
(void)ipsec_setsocket(m, NULL); |
#endif |
#endif |
error = ip_output(m, (struct mbuf *)0, &ipforward_rt, |
error = ip_output(m, (struct mbuf *)0, &ipforward_rt, |
(IP_FORWARDING | (ip_directedbcast ? IP_ALLOWBROADCAST : 0)), 0); |
(IP_FORWARDING | (ip_directedbcast ? IP_ALLOWBROADCAST : 0)), |
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(struct ip_moptions *)NULL, (struct socket *)NULL); |
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if (error) |
if (error) |
ipstat.ips_cantforward++; |
ipstat.ips_cantforward++; |
else { |
else { |
Line 1703 ip_forward(m, srcrt) |
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Line 1783 ip_forward(m, srcrt) |
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case EMSGSIZE: |
case EMSGSIZE: |
type = ICMP_UNREACH; |
type = ICMP_UNREACH; |
code = ICMP_UNREACH_NEEDFRAG; |
code = ICMP_UNREACH_NEEDFRAG; |
#ifndef IPSEC |
#if !defined(IPSEC) && !defined(FAST_IPSEC) |
if (ipforward_rt.ro_rt) |
if (ipforward_rt.ro_rt) |
destifp = ipforward_rt.ro_rt->rt_ifp; |
destifp = ipforward_rt.ro_rt->rt_ifp; |
#else |
#else |
Line 1720 ip_forward(m, srcrt) |
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Line 1800 ip_forward(m, srcrt) |
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struct route *ro; |
struct route *ro; |
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sp = ipsec4_getpolicybyaddr(mcopy, |
sp = ipsec4_getpolicybyaddr(mcopy, |
IPSEC_DIR_OUTBOUND, |
IPSEC_DIR_OUTBOUND, IP_FORWARDING, |
IP_FORWARDING, |
&ipsecerror); |
&ipsecerror); |
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if (sp == NULL) |
if (sp == NULL) |
destifp = ipforward_rt.ro_rt->rt_ifp; |
destifp = ipforward_rt.ro_rt->rt_ifp; |
else { |
else { |
/* count IPsec header size */ |
/* count IPsec header size */ |
ipsechdr = ipsec4_hdrsiz(mcopy, |
ipsechdr = ipsec4_hdrsiz(mcopy, |
IPSEC_DIR_OUTBOUND, |
IPSEC_DIR_OUTBOUND, NULL); |
NULL); |
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/* |
/* |
* find the correct route for outer IPv4 |
* find the correct route for outer IPv4 |
Line 1756 ip_forward(m, srcrt) |
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Line 1834 ip_forward(m, srcrt) |
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} |
} |
} |
} |
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#ifdef IPSEC |
key_freesp(sp); |
key_freesp(sp); |
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#else |
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KEY_FREESP(&sp); |
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#endif |
} |
} |
} |
} |
#endif /*IPSEC*/ |
#endif /*IPSEC*/ |