version 1.218.2.1, 2006/06/21 15:11:01 |
version 1.218.2.3, 2007/02/26 09:11:44 |
Line 121 __KERNEL_RCSID(0, "$NetBSD$"); |
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Line 121 __KERNEL_RCSID(0, "$NetBSD$"); |
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#include <sys/kernel.h> |
#include <sys/kernel.h> |
#include <sys/pool.h> |
#include <sys/pool.h> |
#include <sys/sysctl.h> |
#include <sys/sysctl.h> |
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#include <sys/kauth.h> |
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#include <net/if.h> |
#include <net/if.h> |
#include <net/if_dl.h> |
#include <net/if_dl.h> |
Line 376 static struct ip_srcrt { |
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Line 377 static struct ip_srcrt { |
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static void save_rte(u_char *, struct in_addr); |
static void save_rte(u_char *, struct in_addr); |
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#ifdef MBUFTRACE |
#ifdef MBUFTRACE |
struct mowner ip_rx_mowner = { "internet", "rx" }; |
struct mowner ip_rx_mowner = MOWNER_INIT("internet", "rx"); |
struct mowner ip_tx_mowner = { "internet", "tx" }; |
struct mowner ip_tx_mowner = MOWNER_INIT("internet", "tx"); |
#endif |
#endif |
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/* |
/* |
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#endif /* MBUFTRACE */ |
#endif /* MBUFTRACE */ |
} |
} |
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struct sockaddr_in ipaddr = { sizeof(ipaddr), AF_INET }; |
struct sockaddr_in ipaddr = { |
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.sin_len = sizeof(ipaddr), |
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.sin_family = AF_INET, |
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}; |
struct route ipforward_rt; |
struct route ipforward_rt; |
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/* |
/* |
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int s; |
int s; |
struct mbuf *m; |
struct mbuf *m; |
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while (1) { |
while (!IF_IS_EMPTY(&ipintrq)) { |
s = splnet(); |
s = splnet(); |
IF_DEQUEUE(&ipintrq, m); |
IF_DEQUEUE(&ipintrq, m); |
splx(s); |
splx(s); |
Line 484 ip_input(struct mbuf *m) |
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Line 488 ip_input(struct mbuf *m) |
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int downmatch; |
int downmatch; |
int checkif; |
int checkif; |
int srcrt = 0; |
int srcrt = 0; |
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int s; |
u_int hash; |
u_int hash; |
#ifdef FAST_IPSEC |
#ifdef FAST_IPSEC |
struct m_tag *mtag; |
struct m_tag *mtag; |
struct tdb_ident *tdbi; |
struct tdb_ident *tdbi; |
struct secpolicy *sp; |
struct secpolicy *sp; |
int s, error; |
int error; |
#endif /* FAST_IPSEC */ |
#endif /* FAST_IPSEC */ |
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MCLAIM(m, &ip_rx_mowner); |
MCLAIM(m, &ip_rx_mowner); |
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*/ |
*/ |
if (mff || ip->ip_off != htons(0)) { |
if (mff || ip->ip_off != htons(0)) { |
ipstat.ips_fragments++; |
ipstat.ips_fragments++; |
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s = splvm(); |
ipqe = pool_get(&ipqent_pool, PR_NOWAIT); |
ipqe = pool_get(&ipqent_pool, PR_NOWAIT); |
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splx(s); |
if (ipqe == NULL) { |
if (ipqe == NULL) { |
ipstat.ips_rcvmemdrop++; |
ipstat.ips_rcvmemdrop++; |
IPQ_UNLOCK(); |
IPQ_UNLOCK(); |
Line 1051 ip_reass(struct ipqent *ipqe, struct ipq |
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Line 1058 ip_reass(struct ipqent *ipqe, struct ipq |
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struct ip *ip; |
struct ip *ip; |
struct mbuf *t; |
struct mbuf *t; |
int hlen = ipqe->ipqe_ip->ip_hl << 2; |
int hlen = ipqe->ipqe_ip->ip_hl << 2; |
int i, next; |
int i, next, s; |
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IPQ_LOCK_CHECK(); |
IPQ_LOCK_CHECK(); |
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Line 1156 ip_reass(struct ipqent *ipqe, struct ipq |
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Line 1163 ip_reass(struct ipqent *ipqe, struct ipq |
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nq = TAILQ_NEXT(q, ipqe_q); |
nq = TAILQ_NEXT(q, ipqe_q); |
m_freem(q->ipqe_m); |
m_freem(q->ipqe_m); |
TAILQ_REMOVE(&fp->ipq_fragq, q, ipqe_q); |
TAILQ_REMOVE(&fp->ipq_fragq, q, ipqe_q); |
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s = splvm(); |
pool_put(&ipqent_pool, q); |
pool_put(&ipqent_pool, q); |
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splx(s); |
fp->ipq_nfrags--; |
fp->ipq_nfrags--; |
ip_nfrags--; |
ip_nfrags--; |
} |
} |
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m->m_next = 0; |
m->m_next = 0; |
m_cat(m, t); |
m_cat(m, t); |
nq = TAILQ_NEXT(q, ipqe_q); |
nq = TAILQ_NEXT(q, ipqe_q); |
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s = splvm(); |
pool_put(&ipqent_pool, q); |
pool_put(&ipqent_pool, q); |
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splx(s); |
for (q = nq; q != NULL; q = nq) { |
for (q = nq; q != NULL; q = nq) { |
t = q->ipqe_m; |
t = q->ipqe_m; |
nq = TAILQ_NEXT(q, ipqe_q); |
nq = TAILQ_NEXT(q, ipqe_q); |
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s = splvm(); |
pool_put(&ipqent_pool, q); |
pool_put(&ipqent_pool, q); |
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splx(s); |
m_cat(m, t); |
m_cat(m, t); |
} |
} |
ip_nfrags -= fp->ipq_nfrags; |
ip_nfrags -= fp->ipq_nfrags; |
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ip_nfrags--; |
ip_nfrags--; |
ipstat.ips_fragdropped++; |
ipstat.ips_fragdropped++; |
m_freem(m); |
m_freem(m); |
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s = splvm(); |
pool_put(&ipqent_pool, ipqe); |
pool_put(&ipqent_pool, ipqe); |
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splx(s); |
return (0); |
return (0); |
} |
} |
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Line 1249 ip_freef(struct ipq *fp) |
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Line 1264 ip_freef(struct ipq *fp) |
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{ |
{ |
struct ipqent *q, *p; |
struct ipqent *q, *p; |
u_int nfrags = 0; |
u_int nfrags = 0; |
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int s; |
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IPQ_LOCK_CHECK(); |
IPQ_LOCK_CHECK(); |
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Line 1257 ip_freef(struct ipq *fp) |
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Line 1273 ip_freef(struct ipq *fp) |
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m_freem(q->ipqe_m); |
m_freem(q->ipqe_m); |
nfrags++; |
nfrags++; |
TAILQ_REMOVE(&fp->ipq_fragq, q, ipqe_q); |
TAILQ_REMOVE(&fp->ipq_fragq, q, ipqe_q); |
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s = splvm(); |
pool_put(&ipqent_pool, q); |
pool_put(&ipqent_pool, q); |
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splx(s); |
} |
} |
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if (nfrags != fp->ipq_nfrags) |
if (nfrags != fp->ipq_nfrags) |
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struct in_ifaddr * |
struct in_ifaddr * |
ip_rtaddr(struct in_addr dst) |
ip_rtaddr(struct in_addr dst) |
{ |
{ |
struct sockaddr_in *sin; |
if (!in_hosteq(dst, satocsin(rtcache_getdst(&ipforward_rt))->sin_addr)) |
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rtcache_free(&ipforward_rt); |
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else |
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rtcache_check(&ipforward_rt); |
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sin = satosin(&ipforward_rt.ro_dst); |
if (ipforward_rt.ro_rt == NULL) { |
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struct sockaddr_in *sin = satosin(&ipforward_rt.ro_dst); |
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if (ipforward_rt.ro_rt == 0 || !in_hosteq(dst, sin->sin_addr)) { |
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if (ipforward_rt.ro_rt) { |
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RTFREE(ipforward_rt.ro_rt); |
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ipforward_rt.ro_rt = 0; |
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} |
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sin->sin_family = AF_INET; |
sin->sin_family = AF_INET; |
sin->sin_len = sizeof(*sin); |
sin->sin_len = sizeof(*sin); |
sin->sin_addr = dst; |
sin->sin_addr = dst; |
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rtalloc(&ipforward_rt); |
rtcache_init(&ipforward_rt); |
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if (ipforward_rt.ro_rt == NULL) |
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return NULL; |
} |
} |
if (ipforward_rt.ro_rt == 0) |
return ifatoia(ipforward_rt.ro_rt->rt_ifa); |
return ((struct in_ifaddr *)0); |
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return (ifatoia(ipforward_rt.ro_rt->rt_ifa)); |
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} |
} |
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/* |
/* |
Line 1710 ip_srcroute(void) |
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Line 1727 ip_srcroute(void) |
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struct mbuf *m; |
struct mbuf *m; |
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if (ip_nhops == 0) |
if (ip_nhops == 0) |
return ((struct mbuf *)0); |
return NULL; |
m = m_get(M_DONTWAIT, MT_SOOPTS); |
m = m_get(M_DONTWAIT, MT_SOOPTS); |
if (m == 0) |
if (m == 0) |
return ((struct mbuf *)0); |
return NULL; |
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MCLAIM(m, &inetdomain.dom_mowner); |
MCLAIM(m, &inetdomain.dom_mowner); |
#define OPTSIZ (sizeof(ip_srcrt.nop) + sizeof(ip_srcrt.srcopt)) |
#define OPTSIZ (sizeof(ip_srcrt.nop) + sizeof(ip_srcrt.srcopt)) |
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ip_forward(struct mbuf *m, int srcrt) |
ip_forward(struct mbuf *m, int srcrt) |
{ |
{ |
struct ip *ip = mtod(m, struct ip *); |
struct ip *ip = mtod(m, struct ip *); |
struct sockaddr_in *sin; |
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struct rtentry *rt; |
struct rtentry *rt; |
int error, type = 0, code = 0, destmtu = 0; |
int error, type = 0, code = 0, destmtu = 0; |
struct mbuf *mcopy; |
struct mbuf *mcopy; |
Line 1854 ip_forward(struct mbuf *m, int srcrt) |
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Line 1870 ip_forward(struct mbuf *m, int srcrt) |
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return; |
return; |
} |
} |
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sin = satosin(&ipforward_rt.ro_dst); |
if (!in_hosteq(ip->ip_dst, |
if ((rt = ipforward_rt.ro_rt) == 0 || |
satocsin(rtcache_getdst(&ipforward_rt))->sin_addr)) |
!in_hosteq(ip->ip_dst, sin->sin_addr)) { |
rtcache_free(&ipforward_rt); |
if (ipforward_rt.ro_rt) { |
else |
RTFREE(ipforward_rt.ro_rt); |
rtcache_check(&ipforward_rt); |
ipforward_rt.ro_rt = 0; |
if (ipforward_rt.ro_rt == NULL) { |
} |
struct sockaddr_in *sin = satosin(&ipforward_rt.ro_dst); |
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sin->sin_family = AF_INET; |
sin->sin_family = AF_INET; |
sin->sin_len = sizeof(struct sockaddr_in); |
sin->sin_len = sizeof(*sin); |
sin->sin_addr = ip->ip_dst; |
sin->sin_addr = ip->ip_dst; |
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rtalloc(&ipforward_rt); |
rtcache_init(&ipforward_rt); |
if (ipforward_rt.ro_rt == 0) { |
if (ipforward_rt.ro_rt == NULL) { |
icmp_error(m, ICMP_UNREACH, ICMP_UNREACH_NET, dest, 0); |
icmp_error(m, ICMP_UNREACH, ICMP_UNREACH_NET, dest, 0); |
return; |
return; |
} |
} |
rt = ipforward_rt.ro_rt; |
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} |
} |
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rt = ipforward_rt.ro_rt; |
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/* |
/* |
* Save at most 68 bytes of the packet in case |
* Save at most 68 bytes of the packet in case |
Line 1917 ip_forward(struct mbuf *m, int srcrt) |
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Line 1934 ip_forward(struct mbuf *m, int srcrt) |
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} |
} |
} |
} |
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error = ip_output(m, (struct mbuf *)0, &ipforward_rt, |
error = ip_output(m, NULL, &ipforward_rt, |
(IP_FORWARDING | (ip_directedbcast ? IP_ALLOWBROADCAST : 0)), |
(IP_FORWARDING | (ip_directedbcast ? IP_ALLOWBROADCAST : 0)), |
(struct ip_moptions *)NULL, (struct socket *)NULL); |
(struct ip_moptions *)NULL, (struct socket *)NULL); |
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Line 1960 ip_forward(struct mbuf *m, int srcrt) |
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Line 1977 ip_forward(struct mbuf *m, int srcrt) |
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type = ICMP_UNREACH; |
type = ICMP_UNREACH; |
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 != NULL) |
destmtu = ipforward_rt.ro_rt->rt_ifp->if_mtu; |
destmtu = ipforward_rt.ro_rt->rt_ifp->if_mtu; |
#else |
#else |
/* |
/* |
Line 1969 ip_forward(struct mbuf *m, int srcrt) |
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Line 1986 ip_forward(struct mbuf *m, int srcrt) |
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* tunnel MTU = if MTU - sizeof(IP) - ESP/AH hdrsiz |
* tunnel MTU = if MTU - sizeof(IP) - ESP/AH hdrsiz |
* XXX quickhack!!! |
* XXX quickhack!!! |
*/ |
*/ |
if (ipforward_rt.ro_rt) { |
if (ipforward_rt.ro_rt != NULL) { |
struct secpolicy *sp; |
struct secpolicy *sp; |
int ipsecerror; |
int ipsecerror; |
size_t ipsechdr; |
size_t ipsechdr; |
Line 2093 ip_savecontrol(struct inpcb *inp, struct |
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Line 2110 ip_savecontrol(struct inpcb *inp, struct |
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} |
} |
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/* |
/* |
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* sysctl helper routine for net.inet.ip.forwsrcrt. |
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*/ |
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static int |
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sysctl_net_inet_ip_forwsrcrt(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 = ip_forwsrcrt; |
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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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if (kauth_authorize_network(l->l_cred, KAUTH_NETWORK_FORWSRCRT, |
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0, NULL, NULL, NULL)) |
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return (EPERM); |
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ip_forwsrcrt = tmp; |
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return (0); |
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} |
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/* |
* sysctl helper routine for net.inet.ip.mtudisctimeout. checks the |
* sysctl helper routine for net.inet.ip.mtudisctimeout. checks the |
* range of the new value and tweaks timers if it changes. |
* range of the new value and tweaks timers if it changes. |
*/ |
*/ |
Line 2193 SYSCTL_SETUP(sysctl_net_inet_ip_setup, " |
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Line 2235 SYSCTL_SETUP(sysctl_net_inet_ip_setup, " |
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IPCTL_DEFMTU, CTL_EOL); |
IPCTL_DEFMTU, CTL_EOL); |
#endif /* IPCTL_DEFMTU */ |
#endif /* IPCTL_DEFMTU */ |
sysctl_createv(clog, 0, NULL, NULL, |
sysctl_createv(clog, 0, NULL, NULL, |
CTLFLAG_PERMANENT|CTLFLAG_READONLY1, |
CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
CTLTYPE_INT, "forwsrcrt", |
CTLTYPE_INT, "forwsrcrt", |
SYSCTL_DESCR("Enable forwarding of source-routed " |
SYSCTL_DESCR("Enable forwarding of source-routed " |
"datagrams"), |
"datagrams"), |
NULL, 0, &ip_forwsrcrt, 0, |
sysctl_net_inet_ip_forwsrcrt, 0, &ip_forwsrcrt, 0, |
CTL_NET, PF_INET, IPPROTO_IP, |
CTL_NET, PF_INET, IPPROTO_IP, |
IPCTL_FORWSRCRT, CTL_EOL); |
IPCTL_FORWSRCRT, CTL_EOL); |
sysctl_createv(clog, 0, NULL, NULL, |
sysctl_createv(clog, 0, NULL, NULL, |