version 1.218, 2005/06/28 19:38:58 |
version 1.225, 2006/04/15 02:24:12 |
Line 279 static u_int ip_reass_ttl_decr(u_int tic |
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Line 279 static u_int ip_reass_ttl_decr(u_int tic |
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static void ip_reass_drophalf(void); |
static void ip_reass_drophalf(void); |
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static __inline int ipq_lock_try(void); |
static inline int ipq_lock_try(void); |
static __inline void ipq_unlock(void); |
static inline void ipq_unlock(void); |
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static __inline int |
static inline int |
ipq_lock_try(void) |
ipq_lock_try(void) |
{ |
{ |
int s; |
int s; |
Line 301 ipq_lock_try(void) |
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Line 301 ipq_lock_try(void) |
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return (1); |
return (1); |
} |
} |
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static __inline void |
static inline void |
ipq_unlock(void) |
ipq_unlock(void) |
{ |
{ |
int s; |
int s; |
Line 732 ip_input(struct mbuf *m) |
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Line 732 ip_input(struct mbuf *m) |
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} |
} |
if (ia != NULL) |
if (ia != NULL) |
goto ours; |
goto ours; |
if (m->m_pkthdr.rcvif->if_flags & IFF_BROADCAST) { |
if (m->m_pkthdr.rcvif && m->m_pkthdr.rcvif->if_flags & IFF_BROADCAST) { |
IFADDR_FOREACH(ifa, m->m_pkthdr.rcvif) { |
IFADDR_FOREACH(ifa, m->m_pkthdr.rcvif) { |
if (ifa->ifa_addr->sa_family != AF_INET) |
if (ifa->ifa_addr->sa_family != AF_INET) |
continue; |
continue; |
Line 1823 ip_forward(struct mbuf *m, int srcrt) |
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Line 1823 ip_forward(struct mbuf *m, int srcrt) |
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struct ip *ip = mtod(m, struct ip *); |
struct ip *ip = mtod(m, struct ip *); |
struct sockaddr_in *sin; |
struct sockaddr_in *sin; |
struct rtentry *rt; |
struct rtentry *rt; |
int error, type = 0, code = 0; |
int error, type = 0, code = 0, destmtu = 0; |
struct mbuf *mcopy; |
struct mbuf *mcopy; |
n_long dest; |
n_long dest; |
struct ifnet *destifp; |
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#if defined(IPSEC) || defined(FAST_IPSEC) |
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struct ifnet dummyifp; |
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#endif |
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/* |
/* |
* We are now in the output path. |
* We are now in the output path. |
Line 1843 ip_forward(struct mbuf *m, int srcrt) |
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Line 1839 ip_forward(struct mbuf *m, int srcrt) |
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dest = 0; |
dest = 0; |
#ifdef DIAGNOSTIC |
#ifdef DIAGNOSTIC |
if (ipprintfs) |
if (ipprintfs) { |
printf("forward: src %2.2x dst %2.2x ttl %x\n", |
printf("forward: src %s ", inet_ntoa(ip->ip_src)); |
ntohl(ip->ip_src.s_addr), |
printf("dst %s ttl %x\n", inet_ntoa(ip->ip_dst), ip->ip_ttl); |
ntohl(ip->ip_dst.s_addr), ip->ip_ttl); |
} |
#endif |
#endif |
if (m->m_flags & (M_BCAST|M_MCAST) || in_canforward(ip->ip_dst) == 0) { |
if (m->m_flags & (M_BCAST|M_MCAST) || in_canforward(ip->ip_dst) == 0) { |
ipstat.ips_cantforward++; |
ipstat.ips_cantforward++; |
Line 1857 ip_forward(struct mbuf *m, int srcrt) |
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Line 1853 ip_forward(struct mbuf *m, int srcrt) |
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icmp_error(m, ICMP_TIMXCEED, ICMP_TIMXCEED_INTRANS, dest, 0); |
icmp_error(m, ICMP_TIMXCEED, ICMP_TIMXCEED_INTRANS, dest, 0); |
return; |
return; |
} |
} |
ip->ip_ttl -= IPTTLDEC; |
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sin = satosin(&ipforward_rt.ro_dst); |
sin = satosin(&ipforward_rt.ro_dst); |
if ((rt = ipforward_rt.ro_rt) == 0 || |
if ((rt = ipforward_rt.ro_rt) == 0 || |
Line 1887 ip_forward(struct mbuf *m, int srcrt) |
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Line 1882 ip_forward(struct mbuf *m, int srcrt) |
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if (mcopy) |
if (mcopy) |
mcopy = m_pullup(mcopy, ip->ip_hl << 2); |
mcopy = m_pullup(mcopy, ip->ip_hl << 2); |
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ip->ip_ttl -= IPTTLDEC; |
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/* |
/* |
* If forwarding packet using same interface that it came in on, |
* If forwarding packet using same interface that it came in on, |
* perhaps should send a redirect to sender to shortcut a hop. |
* perhaps should send a redirect to sender to shortcut a hop. |
Line 1943 ip_forward(struct mbuf *m, int srcrt) |
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Line 1940 ip_forward(struct mbuf *m, int srcrt) |
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} |
} |
if (mcopy == NULL) |
if (mcopy == NULL) |
return; |
return; |
destifp = NULL; |
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switch (error) { |
switch (error) { |
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Line 1965 ip_forward(struct mbuf *m, int srcrt) |
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Line 1961 ip_forward(struct mbuf *m, int srcrt) |
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code = ICMP_UNREACH_NEEDFRAG; |
code = ICMP_UNREACH_NEEDFRAG; |
#if !defined(IPSEC) && !defined(FAST_IPSEC) |
#if !defined(IPSEC) && !defined(FAST_IPSEC) |
if (ipforward_rt.ro_rt) |
if (ipforward_rt.ro_rt) |
destifp = ipforward_rt.ro_rt->rt_ifp; |
destmtu = ipforward_rt.ro_rt->rt_ifp->if_mtu; |
#else |
#else |
/* |
/* |
* If the packet is routed over IPsec tunnel, tell the |
* If the packet is routed over IPsec tunnel, tell the |
Line 1984 ip_forward(struct mbuf *m, int srcrt) |
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Line 1980 ip_forward(struct mbuf *m, int srcrt) |
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&ipsecerror); |
&ipsecerror); |
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if (sp == NULL) |
if (sp == NULL) |
destifp = ipforward_rt.ro_rt->rt_ifp; |
destmtu = ipforward_rt.ro_rt->rt_ifp->if_mtu; |
else { |
else { |
/* count IPsec header size */ |
/* count IPsec header size */ |
ipsechdr = ipsec4_hdrsiz(mcopy, |
ipsechdr = ipsec4_hdrsiz(mcopy, |
Line 1993 ip_forward(struct mbuf *m, int srcrt) |
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Line 1989 ip_forward(struct mbuf *m, int srcrt) |
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/* |
/* |
* find the correct route for outer IPv4 |
* find the correct route for outer IPv4 |
* header, compute tunnel MTU. |
* header, compute tunnel MTU. |
* |
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* XXX BUG ALERT |
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* The "dummyifp" code relies upon the fact |
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* that icmp_error() touches only ifp->if_mtu. |
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*/ |
*/ |
/*XXX*/ |
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destifp = NULL; |
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if (sp->req != NULL |
if (sp->req != NULL |
&& sp->req->sav != NULL |
&& sp->req->sav != NULL |
&& sp->req->sav->sah != NULL) { |
&& sp->req->sav->sah != NULL) { |
ro = &sp->req->sav->sah->sa_route; |
ro = &sp->req->sav->sah->sa_route; |
if (ro->ro_rt && ro->ro_rt->rt_ifp) { |
if (ro->ro_rt && ro->ro_rt->rt_ifp) { |
dummyifp.if_mtu = |
destmtu = |
ro->ro_rt->rt_rmx.rmx_mtu ? |
ro->ro_rt->rt_rmx.rmx_mtu ? |
ro->ro_rt->rt_rmx.rmx_mtu : |
ro->ro_rt->rt_rmx.rmx_mtu : |
ro->ro_rt->rt_ifp->if_mtu; |
ro->ro_rt->rt_ifp->if_mtu; |
dummyifp.if_mtu -= ipsechdr; |
destmtu -= ipsechdr; |
destifp = &dummyifp; |
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} |
} |
} |
} |
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Line 2042 ip_forward(struct mbuf *m, int srcrt) |
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Line 2032 ip_forward(struct mbuf *m, int srcrt) |
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break; |
break; |
#endif |
#endif |
} |
} |
icmp_error(mcopy, type, code, dest, destifp); |
icmp_error(mcopy, type, code, dest, destmtu); |
} |
} |
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void |
void |
Line 2342 SYSCTL_SETUP(sysctl_net_inet_ip_setup, " |
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Line 2332 SYSCTL_SETUP(sysctl_net_inet_ip_setup, " |
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NULL, 0, &ip_do_loopback_cksum, 0, |
NULL, 0, &ip_do_loopback_cksum, 0, |
CTL_NET, PF_INET, IPPROTO_IP, |
CTL_NET, PF_INET, IPPROTO_IP, |
IPCTL_LOOPBACKCKSUM, CTL_EOL); |
IPCTL_LOOPBACKCKSUM, CTL_EOL); |
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sysctl_createv(clog, 0, NULL, NULL, |
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CTLFLAG_PERMANENT, |
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CTLTYPE_STRUCT, "stats", |
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SYSCTL_DESCR("IP statistics"), |
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NULL, 0, &ipstat, sizeof(ipstat), |
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CTL_NET, PF_INET, IPPROTO_IP, IPCTL_STATS, |
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CTL_EOL); |
} |
} |