version 1.32, 1996/08/14 03:46:44 |
version 1.54, 1998/01/05 09:52:04 |
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#include <sys/domain.h> |
#include <sys/domain.h> |
#include <sys/protosw.h> |
#include <sys/protosw.h> |
#include <sys/socket.h> |
#include <sys/socket.h> |
|
#include <sys/socketvar.h> |
#include <sys/errno.h> |
#include <sys/errno.h> |
#include <sys/time.h> |
#include <sys/time.h> |
#include <sys/kernel.h> |
#include <sys/kernel.h> |
|
|
#include <sys/sysctl.h> |
#include <sys/sysctl.h> |
|
|
#include <net/if.h> |
#include <net/if.h> |
|
#include <net/if_dl.h> |
#include <net/route.h> |
#include <net/route.h> |
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#include <net/pfil.h> |
|
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#include <netinet/in.h> |
#include <netinet/in.h> |
#include <netinet/in_systm.h> |
#include <netinet/in_systm.h> |
|
|
#include <netinet/ip_var.h> |
#include <netinet/ip_var.h> |
#include <netinet/ip_icmp.h> |
#include <netinet/ip_icmp.h> |
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|
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/* XXX should really put this in libkern.h */ |
|
#define offsetof(type, member) ((size_t)(&((type *)0)->member)) |
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#ifndef IPFORWARDING |
#ifndef IPFORWARDING |
#ifdef GATEWAY |
#ifdef GATEWAY |
#define IPFORWARDING 1 /* forward IP packets not for us */ |
#define IPFORWARDING 1 /* forward IP packets not for us */ |
|
|
#define IPSENDREDIRECTS 1 |
#define IPSENDREDIRECTS 1 |
#endif |
#endif |
#ifndef IPFORWSRCRT |
#ifndef IPFORWSRCRT |
#define IPFORWSRCRT 1 /* allow source-routed packets */ |
#define IPFORWSRCRT 1 /* forward source-routed packets */ |
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#endif |
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#ifndef IPALLOWSRCRT |
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#define IPALLOWSRCRT 1 /* allow source-routed packets */ |
#endif |
#endif |
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#ifndef IPMTUDISC |
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#define IPMTUDISC 0 |
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#endif |
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/* |
/* |
* Note: DIRECTED_BROADCAST is handled this way so that previous |
* Note: DIRECTED_BROADCAST is handled this way so that previous |
* configuration using this option will Just Work. |
* configuration using this option will Just Work. |
Line 90 int ipsendredirects = IPSENDREDIRECTS; |
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Line 103 int ipsendredirects = IPSENDREDIRECTS; |
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int ip_defttl = IPDEFTTL; |
int ip_defttl = IPDEFTTL; |
int ip_forwsrcrt = IPFORWSRCRT; |
int ip_forwsrcrt = IPFORWSRCRT; |
int ip_directedbcast = IPDIRECTEDBCAST; |
int ip_directedbcast = IPDIRECTEDBCAST; |
|
int ip_allowsrcrt = IPALLOWSRCRT; |
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int ip_mtudisc = IPMTUDISC; |
#ifdef DIAGNOSTIC |
#ifdef DIAGNOSTIC |
int ipprintfs = 0; |
int ipprintfs = 0; |
#endif |
#endif |
Line 117 static struct ip_srcrt { |
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Line 132 static struct ip_srcrt { |
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} ip_srcrt; |
} ip_srcrt; |
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static void save_rte __P((u_char *, struct in_addr)); |
static void save_rte __P((u_char *, struct in_addr)); |
|
|
/* |
/* |
* IP initialization: fill in IP protocol switch table. |
* IP initialization: fill in IP protocol switch table. |
* All protocols not implemented in kernel go to raw IP protocol handler. |
* All protocols not implemented in kernel go to raw IP protocol handler. |
Line 153 struct route ipforward_rt; |
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Line 169 struct route ipforward_rt; |
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void |
void |
ipintr() |
ipintr() |
{ |
{ |
register struct ip *ip; |
register struct ip *ip = NULL; |
register struct mbuf *m; |
register struct mbuf *m; |
register struct ipq *fp; |
register struct ipq *fp; |
register struct in_ifaddr *ia; |
register struct in_ifaddr *ia; |
struct ipqent *ipqe; |
struct ipqent *ipqe; |
int hlen, mff, s; |
int hlen = 0, mff, len, s; |
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#ifdef PFIL_HOOKS |
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struct packet_filter_hook *pfh; |
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struct mbuf *m0; |
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int rv; |
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#endif /* PFIL_HOOKS */ |
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|
next: |
next: |
/* |
/* |
|
|
* Convert fields to host representation. |
* Convert fields to host representation. |
*/ |
*/ |
NTOHS(ip->ip_len); |
NTOHS(ip->ip_len); |
if (ip->ip_len < hlen) { |
|
ipstat.ips_badlen++; |
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goto bad; |
|
} |
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NTOHS(ip->ip_id); |
NTOHS(ip->ip_id); |
NTOHS(ip->ip_off); |
NTOHS(ip->ip_off); |
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len = ip->ip_len; |
|
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/* |
/* |
* Check that the amount of data in the buffers |
* Check that the amount of data in the buffers |
|
|
* Trim mbufs if longer than we expect. |
* Trim mbufs if longer than we expect. |
* Drop packet if shorter than we expect. |
* Drop packet if shorter than we expect. |
*/ |
*/ |
if (m->m_pkthdr.len < ip->ip_len) { |
if (m->m_pkthdr.len < len) { |
ipstat.ips_tooshort++; |
ipstat.ips_tooshort++; |
goto bad; |
goto bad; |
} |
} |
if (m->m_pkthdr.len > ip->ip_len) { |
if (m->m_pkthdr.len > len) { |
if (m->m_len == m->m_pkthdr.len) { |
if (m->m_len == m->m_pkthdr.len) { |
m->m_len = ip->ip_len; |
m->m_len = len; |
m->m_pkthdr.len = ip->ip_len; |
m->m_pkthdr.len = len; |
} else |
} else |
m_adj(m, ip->ip_len - m->m_pkthdr.len); |
m_adj(m, len - m->m_pkthdr.len); |
} |
} |
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#ifdef PFIL_HOOKS |
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/* |
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* Run through list of hooks for input packets. |
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*/ |
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m0 = m; |
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for (pfh = pfil_hook_get(PFIL_IN); pfh; pfh = pfh->pfil_link.le_next) |
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if (pfh->pfil_func) { |
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rv = pfh->pfil_func(ip, hlen, m->m_pkthdr.rcvif, 0, &m0); |
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if (rv) |
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goto next; |
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ip = mtod(m = m0, struct ip *); |
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} |
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#endif /* PFIL_HOOKS */ |
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/* |
/* |
* Process options and, if not destined for us, |
* Process options and, if not destined for us, |
* ship it on. ip_dooptions returns 1 when an |
* ship it on. ip_dooptions returns 1 when an |
|
|
* Check our list of addresses, to see if the packet is for us. |
* Check our list of addresses, to see if the packet is for us. |
*/ |
*/ |
for (ia = in_ifaddr.tqh_first; ia; ia = ia->ia_list.tqe_next) { |
for (ia = in_ifaddr.tqh_first; ia; ia = ia->ia_list.tqe_next) { |
if (ip->ip_dst.s_addr == ia->ia_addr.sin_addr.s_addr) |
if (in_hosteq(ip->ip_dst, ia->ia_addr.sin_addr)) |
goto ours; |
goto ours; |
if (((ip_directedbcast == 0) || (ip_directedbcast && |
if (((ip_directedbcast == 0) || (ip_directedbcast && |
ia->ia_ifp == m->m_pkthdr.rcvif)) && |
ia->ia_ifp == m->m_pkthdr.rcvif)) && |
(ia->ia_ifp->if_flags & IFF_BROADCAST)) { |
(ia->ia_ifp->if_flags & IFF_BROADCAST)) { |
if (ip->ip_dst.s_addr == ia->ia_broadaddr.sin_addr.s_addr || |
if (in_hosteq(ip->ip_dst, ia->ia_broadaddr.sin_addr) || |
ip->ip_dst.s_addr == ia->ia_netbroadcast.s_addr || |
in_hosteq(ip->ip_dst, ia->ia_netbroadcast) || |
/* |
/* |
* Look for all-0's host part (old broadcast addr), |
* Look for all-0's host part (old broadcast addr), |
* either for subnet or net. |
* either for subnet or net. |
|
|
ip->ip_dst.s_addr == ia->ia_net) |
ip->ip_dst.s_addr == ia->ia_net) |
goto ours; |
goto ours; |
} |
} |
|
/* |
|
* An interface with IP address zero accepts |
|
* all packets that arrive on that interface. |
|
*/ |
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if ((ia->ia_ifp == m->m_pkthdr.rcvif) && |
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in_nullhost(ia->ia_addr.sin_addr)) |
|
goto ours; |
} |
} |
if (IN_MULTICAST(ip->ip_dst.s_addr)) { |
if (IN_MULTICAST(ip->ip_dst.s_addr)) { |
struct in_multi *inm; |
struct in_multi *inm; |
|
|
goto ours; |
goto ours; |
} |
} |
if (ip->ip_dst.s_addr == INADDR_BROADCAST || |
if (ip->ip_dst.s_addr == INADDR_BROADCAST || |
ip->ip_dst.s_addr == INADDR_ANY) |
in_nullhost(ip->ip_dst)) |
goto ours; |
goto ours; |
|
|
/* |
/* |
|
|
* if the packet was previously fragmented, |
* if the packet was previously fragmented, |
* but it's not worth the time; just let them time out.) |
* but it's not worth the time; just let them time out.) |
*/ |
*/ |
if (ip->ip_off &~ IP_DF) { |
if (ip->ip_off & ~(IP_DF|IP_RF)) { |
if (m->m_flags & M_EXT) { /* XXX */ |
|
if ((m = m_pullup(m, sizeof (struct ip))) == 0) { |
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ipstat.ips_toosmall++; |
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goto next; |
|
} |
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ip = mtod(m, struct ip *); |
|
} |
|
/* |
/* |
* Look for queue of fragments |
* Look for queue of fragments |
* of this datagram. |
* of this datagram. |
*/ |
*/ |
for (fp = ipq.lh_first; fp != NULL; fp = fp->ipq_q.le_next) |
for (fp = ipq.lh_first; fp != NULL; fp = fp->ipq_q.le_next) |
if (ip->ip_id == fp->ipq_id && |
if (ip->ip_id == fp->ipq_id && |
ip->ip_src.s_addr == fp->ipq_src.s_addr && |
in_hosteq(ip->ip_src, fp->ipq_src) && |
ip->ip_dst.s_addr == fp->ipq_dst.s_addr && |
in_hosteq(ip->ip_dst, fp->ipq_dst) && |
ip->ip_p == fp->ipq_p) |
ip->ip_p == fp->ipq_p) |
goto found; |
goto found; |
fp = 0; |
fp = 0; |
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|
goto bad; |
goto bad; |
} |
} |
ipqe->ipqe_mff = mff; |
ipqe->ipqe_mff = mff; |
|
ipqe->ipqe_m = m; |
ipqe->ipqe_ip = ip; |
ipqe->ipqe_ip = ip; |
ip = ip_reass(ipqe, fp); |
m = ip_reass(ipqe, fp); |
if (ip == 0) |
if (m == 0) |
goto next; |
goto next; |
ipstat.ips_reassembled++; |
ipstat.ips_reassembled++; |
m = dtom(ip); |
ip = mtod(m, struct ip *); |
} else |
} else |
if (fp) |
if (fp) |
ip_freef(fp); |
ip_freef(fp); |
|
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* reassembly of this datagram already exists, then it |
* reassembly of this datagram already exists, then it |
* is given as fp; otherwise have to make a chain. |
* is given as fp; otherwise have to make a chain. |
*/ |
*/ |
struct ip * |
struct mbuf * |
ip_reass(ipqe, fp) |
ip_reass(ipqe, fp) |
register struct ipqent *ipqe; |
register struct ipqent *ipqe; |
register struct ipq *fp; |
register struct ipq *fp; |
{ |
{ |
register struct mbuf *m = dtom(ipqe->ipqe_ip); |
register struct mbuf *m = ipqe->ipqe_m; |
register struct ipqent *nq, *p, *q; |
register struct ipqent *nq, *p, *q; |
struct ip *ip; |
struct ip *ip; |
struct mbuf *t; |
struct mbuf *t; |
Line 451 ip_reass(ipqe, fp) |
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Line 484 ip_reass(ipqe, fp) |
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* If first fragment to arrive, create a reassembly queue. |
* If first fragment to arrive, create a reassembly queue. |
*/ |
*/ |
if (fp == 0) { |
if (fp == 0) { |
if ((t = m_get(M_DONTWAIT, MT_FTABLE)) == NULL) |
MALLOC(fp, struct ipq *, sizeof (struct ipq), |
|
M_FTABLE, M_NOWAIT); |
|
if (fp == NULL) |
goto dropfrag; |
goto dropfrag; |
fp = mtod(t, struct ipq *); |
|
LIST_INSERT_HEAD(&ipq, fp, ipq_q); |
LIST_INSERT_HEAD(&ipq, fp, ipq_q); |
fp->ipq_ttl = IPFRAGTTL; |
fp->ipq_ttl = IPFRAGTTL; |
fp->ipq_p = ipqe->ipqe_ip->ip_p; |
fp->ipq_p = ipqe->ipqe_ip->ip_p; |
Line 484 ip_reass(ipqe, fp) |
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Line 518 ip_reass(ipqe, fp) |
|
if (i > 0) { |
if (i > 0) { |
if (i >= ipqe->ipqe_ip->ip_len) |
if (i >= ipqe->ipqe_ip->ip_len) |
goto dropfrag; |
goto dropfrag; |
m_adj(dtom(ipqe->ipqe_ip), i); |
m_adj(ipqe->ipqe_m, i); |
ipqe->ipqe_ip->ip_off += i; |
ipqe->ipqe_ip->ip_off += i; |
ipqe->ipqe_ip->ip_len -= i; |
ipqe->ipqe_ip->ip_len -= i; |
} |
} |
Line 501 ip_reass(ipqe, fp) |
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Line 535 ip_reass(ipqe, fp) |
|
if (i < q->ipqe_ip->ip_len) { |
if (i < q->ipqe_ip->ip_len) { |
q->ipqe_ip->ip_len -= i; |
q->ipqe_ip->ip_len -= i; |
q->ipqe_ip->ip_off += i; |
q->ipqe_ip->ip_off += i; |
m_adj(dtom(q->ipqe_ip), i); |
m_adj(q->ipqe_m, i); |
break; |
break; |
} |
} |
nq = q->ipqe_q.le_next; |
nq = q->ipqe_q.le_next; |
m_freem(dtom(q->ipqe_ip)); |
m_freem(q->ipqe_m); |
LIST_REMOVE(q, ipqe_q); |
LIST_REMOVE(q, ipqe_q); |
FREE(q, M_IPQ); |
FREE(q, M_IPQ); |
} |
} |
|
|
return (0); |
return (0); |
|
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/* |
/* |
* Reassembly is complete; concatenate fragments. |
* Reassembly is complete. Check for a bogus message size and |
|
* concatenate fragments. |
*/ |
*/ |
q = fp->ipq_fragq.lh_first; |
q = fp->ipq_fragq.lh_first; |
ip = q->ipqe_ip; |
ip = q->ipqe_ip; |
m = dtom(q->ipqe_ip); |
if ((next + (ip->ip_hl << 2)) > IP_MAXPACKET) { |
|
ipstat.ips_toolong++; |
|
ip_freef(fp); |
|
return (0); |
|
} |
|
m = q->ipqe_m; |
t = m->m_next; |
t = m->m_next; |
m->m_next = 0; |
m->m_next = 0; |
m_cat(m, t); |
m_cat(m, t); |
nq = q->ipqe_q.le_next; |
nq = q->ipqe_q.le_next; |
FREE(q, M_IPQ); |
FREE(q, M_IPQ); |
for (q = nq; q != NULL; q = nq) { |
for (q = nq; q != NULL; q = nq) { |
t = dtom(q->ipqe_ip); |
t = q->ipqe_m; |
nq = q->ipqe_q.le_next; |
nq = q->ipqe_q.le_next; |
FREE(q, M_IPQ); |
FREE(q, M_IPQ); |
m_cat(m, t); |
m_cat(m, t); |
|
|
ip->ip_src = fp->ipq_src; |
ip->ip_src = fp->ipq_src; |
ip->ip_dst = fp->ipq_dst; |
ip->ip_dst = fp->ipq_dst; |
LIST_REMOVE(fp, ipq_q); |
LIST_REMOVE(fp, ipq_q); |
(void) m_free(dtom(fp)); |
FREE(fp, M_FTABLE); |
m->m_len += (ip->ip_hl << 2); |
m->m_len += (ip->ip_hl << 2); |
m->m_data -= (ip->ip_hl << 2); |
m->m_data -= (ip->ip_hl << 2); |
/* some debugging cruft by sklower, below, will go away soon */ |
/* some debugging cruft by sklower, below, will go away soon */ |
if (m->m_flags & M_PKTHDR) { /* XXX this should be done elsewhere */ |
if (m->m_flags & M_PKTHDR) { /* XXX this should be done elsewhere */ |
register int plen = 0; |
register int plen = 0; |
for (t = m; m; m = m->m_next) |
for (t = m; t; t = t->m_next) |
plen += m->m_len; |
plen += t->m_len; |
t->m_pkthdr.len = plen; |
m->m_pkthdr.len = plen; |
} |
} |
return (ip); |
return (m); |
|
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dropfrag: |
dropfrag: |
ipstat.ips_fragdropped++; |
ipstat.ips_fragdropped++; |
|
|
|
|
for (q = fp->ipq_fragq.lh_first; q != NULL; q = p) { |
for (q = fp->ipq_fragq.lh_first; q != NULL; q = p) { |
p = q->ipqe_q.le_next; |
p = q->ipqe_q.le_next; |
m_freem(dtom(q->ipqe_ip)); |
m_freem(q->ipqe_m); |
LIST_REMOVE(q, ipqe_q); |
LIST_REMOVE(q, ipqe_q); |
FREE(q, M_IPQ); |
FREE(q, M_IPQ); |
} |
} |
LIST_REMOVE(fp, ipq_q); |
LIST_REMOVE(fp, ipq_q); |
(void) m_free(dtom(fp)); |
FREE(fp, M_FTABLE); |
} |
} |
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/* |
/* |
|
|
*/ |
*/ |
case IPOPT_LSRR: |
case IPOPT_LSRR: |
case IPOPT_SSRR: |
case IPOPT_SSRR: |
|
if (ip_allowsrcrt == 0) { |
|
type = ICMP_UNREACH; |
|
code = ICMP_UNREACH_NET_PROHIB; |
|
goto bad; |
|
} |
if ((off = cp[IPOPT_OFFSET]) < IPOPT_MINOFF) { |
if ((off = cp[IPOPT_OFFSET]) < IPOPT_MINOFF) { |
code = &cp[IPOPT_OFFSET] - (u_char *)ip; |
code = &cp[IPOPT_OFFSET] - (u_char *)ip; |
goto bad; |
goto bad; |
|
|
|
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sin = satosin(&ipforward_rt.ro_dst); |
sin = satosin(&ipforward_rt.ro_dst); |
|
|
if (ipforward_rt.ro_rt == 0 || dst.s_addr != sin->sin_addr.s_addr) { |
if (ipforward_rt.ro_rt == 0 || !in_hosteq(dst, sin->sin_addr)) { |
if (ipforward_rt.ro_rt) { |
if (ipforward_rt.ro_rt) { |
RTFREE(ipforward_rt.ro_rt); |
RTFREE(ipforward_rt.ro_rt); |
ipforward_rt.ro_rt = 0; |
ipforward_rt.ro_rt = 0; |
Line 1016 ip_forward(m, srcrt) |
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Line 1061 ip_forward(m, srcrt) |
|
#ifdef DIAGNOSTIC |
#ifdef DIAGNOSTIC |
if (ipprintfs) |
if (ipprintfs) |
printf("forward: src %x dst %x ttl %x\n", |
printf("forward: src %x dst %x ttl %x\n", |
ip->ip_src.s_addr, ip->ip_dst.s_addr, ip->ip_ttl); |
ip->ip_src.s_addr, ip->ip_dst.s_addr, ip->ip_ttl); |
#endif |
#endif |
if (m->m_flags & M_BCAST || in_canforward(ip->ip_dst) == 0) { |
if (m->m_flags & M_BCAST || in_canforward(ip->ip_dst) == 0) { |
ipstat.ips_cantforward++; |
ipstat.ips_cantforward++; |
Line 1032 ip_forward(m, srcrt) |
|
Line 1077 ip_forward(m, srcrt) |
|
|
|
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 || |
ip->ip_dst.s_addr != sin->sin_addr.s_addr) { |
!in_hosteq(ip->ip_dst, sin->sin_addr)) { |
if (ipforward_rt.ro_rt) { |
if (ipforward_rt.ro_rt) { |
RTFREE(ipforward_rt.ro_rt); |
RTFREE(ipforward_rt.ro_rt); |
ipforward_rt.ro_rt = 0; |
ipforward_rt.ro_rt = 0; |
} |
} |
sin->sin_family = AF_INET; |
sin->sin_family = AF_INET; |
sin->sin_len = sizeof(*sin); |
sin->sin_len = sizeof(struct sockaddr_in); |
sin->sin_addr = ip->ip_dst; |
sin->sin_addr = ip->ip_dst; |
|
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rtalloc(&ipforward_rt); |
rtalloc(&ipforward_rt); |
Line 1050 ip_forward(m, srcrt) |
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Line 1095 ip_forward(m, srcrt) |
|
} |
} |
|
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/* |
/* |
* Save at most 64 bytes of the packet in case |
* Save at most 68 bytes of the packet in case |
* we need to generate an ICMP message to the src. |
* we need to generate an ICMP message to the src. |
*/ |
*/ |
mcopy = m_copy(m, 0, imin((int)ip->ip_len, 64)); |
mcopy = m_copy(m, 0, imin((int)ip->ip_len, 68)); |
|
|
/* |
/* |
* If forwarding packet using same interface that it came in on, |
* If forwarding packet using same interface that it came in on, |
Line 1065 ip_forward(m, srcrt) |
|
Line 1110 ip_forward(m, srcrt) |
|
*/ |
*/ |
if (rt->rt_ifp == m->m_pkthdr.rcvif && |
if (rt->rt_ifp == m->m_pkthdr.rcvif && |
(rt->rt_flags & (RTF_DYNAMIC|RTF_MODIFIED)) == 0 && |
(rt->rt_flags & (RTF_DYNAMIC|RTF_MODIFIED)) == 0 && |
satosin(rt_key(rt))->sin_addr.s_addr != 0 && |
!in_nullhost(satosin(rt_key(rt))->sin_addr) && |
ipsendredirects && !srcrt) { |
ipsendredirects && !srcrt) { |
if (rt->rt_ifa && |
if (rt->rt_ifa && |
(ip->ip_src.s_addr & ifatoia(rt->rt_ifa)->ia_subnetmask) == |
(ip->ip_src.s_addr & ifatoia(rt->rt_ifa)->ia_subnetmask) == |
Line 1079 ip_forward(m, srcrt) |
|
Line 1124 ip_forward(m, srcrt) |
|
code = ICMP_REDIRECT_HOST; |
code = ICMP_REDIRECT_HOST; |
#ifdef DIAGNOSTIC |
#ifdef DIAGNOSTIC |
if (ipprintfs) |
if (ipprintfs) |
printf("redirect (%d) to %x\n", code, (u_int32_t)dest); |
printf("redirect (%d) to %x\n", code, (u_int32_t)dest); |
#endif |
#endif |
} |
} |
} |
} |
Line 1133 ip_forward(m, srcrt) |
|
Line 1178 ip_forward(m, srcrt) |
|
icmp_error(mcopy, type, code, dest, destifp); |
icmp_error(mcopy, type, code, dest, destifp); |
} |
} |
|
|
|
void |
|
ip_savecontrol(inp, mp, ip, m) |
|
register struct inpcb *inp; |
|
register struct mbuf **mp; |
|
register struct ip *ip; |
|
register struct mbuf *m; |
|
{ |
|
|
|
if (inp->inp_socket->so_options & SO_TIMESTAMP) { |
|
struct timeval tv; |
|
|
|
microtime(&tv); |
|
*mp = sbcreatecontrol((caddr_t) &tv, sizeof(tv), |
|
SCM_TIMESTAMP, SOL_SOCKET); |
|
if (*mp) |
|
mp = &(*mp)->m_next; |
|
} |
|
if (inp->inp_flags & INP_RECVDSTADDR) { |
|
*mp = sbcreatecontrol((caddr_t) &ip->ip_dst, |
|
sizeof(struct in_addr), IP_RECVDSTADDR, IPPROTO_IP); |
|
if (*mp) |
|
mp = &(*mp)->m_next; |
|
} |
|
#ifdef notyet |
|
/* |
|
* XXX |
|
* Moving these out of udp_input() made them even more broken |
|
* than they already were. |
|
* - fenner@parc.xerox.com |
|
*/ |
|
/* options were tossed already */ |
|
if (inp->inp_flags & INP_RECVOPTS) { |
|
*mp = sbcreatecontrol((caddr_t) opts_deleted_above, |
|
sizeof(struct in_addr), IP_RECVOPTS, IPPROTO_IP); |
|
if (*mp) |
|
mp = &(*mp)->m_next; |
|
} |
|
/* ip_srcroute doesn't do what we want here, need to fix */ |
|
if (inp->inp_flags & INP_RECVRETOPTS) { |
|
*mp = sbcreatecontrol((caddr_t) ip_srcroute(), |
|
sizeof(struct in_addr), IP_RECVRETOPTS, IPPROTO_IP); |
|
if (*mp) |
|
mp = &(*mp)->m_next; |
|
} |
|
#endif |
|
if (inp->inp_flags & INP_RECVIF) { |
|
struct sockaddr_dl sdl; |
|
|
|
sdl.sdl_len = offsetof(struct sockaddr_dl, sdl_data[0]); |
|
sdl.sdl_family = AF_LINK; |
|
sdl.sdl_index = m->m_pkthdr.rcvif ? |
|
m->m_pkthdr.rcvif->if_index : 0; |
|
sdl.sdl_nlen = sdl.sdl_alen = sdl.sdl_slen = 0; |
|
*mp = sbcreatecontrol((caddr_t) &sdl, sdl.sdl_len, |
|
IP_RECVIF, IPPROTO_IP); |
|
if (*mp) |
|
mp = &(*mp)->m_next; |
|
} |
|
} |
|
|
int |
int |
ip_sysctl(name, namelen, oldp, oldlenp, newp, newlen) |
ip_sysctl(name, namelen, oldp, oldlenp, newp, newlen) |
int *name; |
int *name; |
Line 1142 ip_sysctl(name, namelen, oldp, oldlenp, |
|
Line 1247 ip_sysctl(name, namelen, oldp, oldlenp, |
|
void *newp; |
void *newp; |
size_t newlen; |
size_t newlen; |
{ |
{ |
|
extern int subnetsarelocal; |
|
|
|
int error, old; |
|
|
/* All sysctl names at this level are terminal. */ |
/* All sysctl names at this level are terminal. */ |
if (namelen != 1) |
if (namelen != 1) |
return (ENOTDIR); |
return (ENOTDIR); |
Line 1159 ip_sysctl(name, namelen, oldp, oldlenp, |
|
Line 1268 ip_sysctl(name, namelen, oldp, oldlenp, |
|
return (sysctl_int(oldp, oldlenp, newp, newlen, &ip_mtu)); |
return (sysctl_int(oldp, oldlenp, newp, newlen, &ip_mtu)); |
#endif |
#endif |
case IPCTL_FORWSRCRT: |
case IPCTL_FORWSRCRT: |
/* |
/* Don't allow this to change in a secure environment. */ |
* Don't allow this to change in a secure environment. |
|
*/ |
|
if (securelevel > 0) |
if (securelevel > 0) |
return (EPERM); |
return (sysctl_rdint(oldp, oldlenp, newp, |
return (sysctl_int(oldp, oldlenp, newp, newlen, |
ip_forwsrcrt)); |
&ip_forwsrcrt)); |
else |
|
return (sysctl_int(oldp, oldlenp, newp, newlen, |
|
&ip_forwsrcrt)); |
case IPCTL_DIRECTEDBCAST: |
case IPCTL_DIRECTEDBCAST: |
return (sysctl_int(oldp, oldlenp, newp, newlen, |
return (sysctl_int(oldp, oldlenp, newp, newlen, |
&ip_directedbcast)); |
&ip_directedbcast)); |
|
case IPCTL_ALLOWSRCRT: |
|
return (sysctl_int(oldp, oldlenp, newp, newlen, |
|
&ip_allowsrcrt)); |
|
case IPCTL_SUBNETSARELOCAL: |
|
return (sysctl_int(oldp, oldlenp, newp, newlen, |
|
&subnetsarelocal)); |
|
case IPCTL_MTUDISC: |
|
return (sysctl_int(oldp, oldlenp, newp, newlen, |
|
&ip_mtudisc)); |
|
case IPCTL_ANONPORTMIN: |
|
old = anonportmin; |
|
error = sysctl_int(oldp, oldlenp, newp, newlen, &anonportmin); |
|
if (anonportmin >= anonportmax || anonportmin > 65535 |
|
#ifndef IPNOPRIVPORTS |
|
|| anonportmin < IPPORT_RESERVED |
|
#endif |
|
) { |
|
anonportmin = old; |
|
return (EINVAL); |
|
} |
|
return (error); |
|
case IPCTL_ANONPORTMAX: |
|
old = anonportmax; |
|
error = sysctl_int(oldp, oldlenp, newp, newlen, &anonportmax); |
|
if (anonportmin >= anonportmax || anonportmax > 65535 |
|
#ifndef IPNOPRIVPORTS |
|
|| anonportmax < IPPORT_RESERVED |
|
#endif |
|
) { |
|
anonportmax = old; |
|
return (EINVAL); |
|
} |
|
return (error); |
default: |
default: |
return (EOPNOTSUPP); |
return (EOPNOTSUPP); |
} |
} |