version 1.37, 1996/09/21 19:44:33 |
version 1.53.2.4, 1998/11/15 19:18:13 |
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* @(#)ip_input.c 8.2 (Berkeley) 1/4/94 |
* @(#)ip_input.c 8.2 (Berkeley) 1/4/94 |
*/ |
*/ |
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|
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/*- |
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* Copyright (c) 1998 The NetBSD Foundation, Inc. |
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* All rights reserved. |
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* |
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* This code is derived from software contributed to The NetBSD Foundation |
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* by Public Access Networks Corporation ("Panix"). It was developed under |
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* contract to Panix by Eric Haszlakiewicz and Thor Lancelot Simon. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* 3. All advertising materials mentioning features or use of this software |
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* must display the following acknowledgement: |
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* This product includes software developed by the NetBSD |
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* Foundation, Inc. and its contributors. |
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* 4. Neither the name of The NetBSD Foundation nor the names of its |
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* contributors may be used to endorse or promote products derived |
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* from this software without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS |
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS |
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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* POSSIBILITY OF SUCH DAMAGE. |
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*/ |
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#include <sys/param.h> |
#include <sys/param.h> |
#include <sys/systm.h> |
#include <sys/systm.h> |
#include <sys/malloc.h> |
#include <sys/malloc.h> |
|
|
#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> |
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#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> |
|
|
#ifdef PFIL_HOOKS |
/* XXX should really put this in libkern.h */ |
#include <net/pfil.h> |
#define offsetof(type, member) ((size_t)(&((type *)0)->member)) |
#endif /* PFIL_HOOKS */ |
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|
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#ifndef IPFORWARDING |
#ifndef IPFORWARDING |
#ifdef GATEWAY |
#ifdef GATEWAY |
|
|
#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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#ifndef IPMTUDISCTIMEOUT |
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#define IPMTUDISCTIMEOUT (10 * 60) /* as per RFC 1191 */ |
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#endif |
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|
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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 94 int ipsendredirects = IPSENDREDIRECTS; |
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Line 144 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; |
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int ip_allowsrcrt = IPALLOWSRCRT; |
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int ip_mtudisc = IPMTUDISC; |
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u_int ip_mtudisc_timeout = IPMTUDISCTIMEOUT; |
#ifdef DIAGNOSTIC |
#ifdef DIAGNOSTIC |
int ipprintfs = 0; |
int ipprintfs = 0; |
#endif |
#endif |
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|
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struct rttimer_queue *ip_mtudisc_timeout_q = NULL; |
|
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extern struct domain inetdomain; |
extern struct domain inetdomain; |
extern struct protosw inetsw[]; |
extern struct protosw inetsw[]; |
u_char ip_protox[IPPROTO_MAX]; |
u_char ip_protox[IPPROTO_MAX]; |
int ipqmaxlen = IFQ_MAXLEN; |
int ipqmaxlen = IFQ_MAXLEN; |
struct in_ifaddrhead in_ifaddr; |
struct in_ifaddrhead in_ifaddr; |
|
struct in_ifaddrhashhead *in_ifaddrhashtbl; |
struct ifqueue ipintrq; |
struct ifqueue ipintrq; |
|
|
/* |
/* |
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|
ip_id = time.tv_sec & 0xffff; |
ip_id = time.tv_sec & 0xffff; |
ipintrq.ifq_maxlen = ipqmaxlen; |
ipintrq.ifq_maxlen = ipqmaxlen; |
TAILQ_INIT(&in_ifaddr); |
TAILQ_INIT(&in_ifaddr); |
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in_ifaddrhashtbl = |
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hashinit(IN_IFADDR_HASH_SIZE, M_IFADDR, &in_ifaddrhash); |
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if (ip_mtudisc != 0) |
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ip_mtudisc_timeout_q = |
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rt_timer_queue_create(ip_mtudisc_timeout); |
} |
} |
|
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struct sockaddr_in ipaddr = { sizeof(ipaddr), AF_INET }; |
struct sockaddr_in ipaddr = { sizeof(ipaddr), AF_INET }; |
|
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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; |
|
register struct ifaddr *ifa; |
struct ipqent *ipqe; |
struct ipqent *ipqe; |
int hlen = 0, mff, len, s; |
int hlen = 0, mff, len, s; |
#ifdef PFIL_HOOKS |
#ifdef PFIL_HOOKS |
struct packet_filter_hook *pfh; |
struct packet_filter_hook *pfh; |
struct mbuf *m0; |
struct mbuf *m0; |
|
int rv; |
#endif /* PFIL_HOOKS */ |
#endif /* PFIL_HOOKS */ |
|
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next: |
next: |
|
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* Run through list of hooks for input packets. |
* Run through list of hooks for input packets. |
*/ |
*/ |
m0 = m; |
m0 = m; |
for (pfh = pfil_hook_get(PFIL_IN); pfh; pfh = pfh->pfil_link.le_next) |
for (pfh = pfil_hook_get(PFIL_IN); pfh; pfh = pfh->pfil_link.tqe_next) |
if (pfh->pfil_func) { |
if (pfh->pfil_func) { |
if (pfh->pfil_func(ip, hlen, m->m_pkthdr.rcvif, 0, &m0)) |
rv = pfh->pfil_func(ip, hlen, m->m_pkthdr.rcvif, 0, &m0); |
goto bad; |
if (rv) |
ip = mtod(m = m0, struct ip *); |
goto next; |
|
m = m0; |
|
if (m == NULL) |
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goto next; |
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ip = mtod(m, struct ip *); |
} |
} |
#endif /* PFIL_HOOKS */ |
#endif /* PFIL_HOOKS */ |
|
|
|
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/* |
/* |
* 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) { |
INADDR_TO_IA(ip->ip_dst, ia); |
if (in_hosteq(ip->ip_dst, ia->ia_addr.sin_addr)) |
if (ia != NULL) goto ours; |
goto ours; |
if (m->m_pkthdr.rcvif->if_flags & IFF_BROADCAST) { |
if (((ip_directedbcast == 0) || (ip_directedbcast && |
for (ifa = m->m_pkthdr.rcvif->if_addrlist.tqh_first; |
ia->ia_ifp == m->m_pkthdr.rcvif)) && |
ifa != NULL; ifa = ifa->ifa_list.tqe_next) { |
(ia->ia_ifp->if_flags & IFF_BROADCAST)) { |
if (ifa->ifa_addr->sa_family != AF_INET) continue; |
|
ia = ifatoia(ifa); |
if (in_hosteq(ip->ip_dst, ia->ia_broadaddr.sin_addr) || |
if (in_hosteq(ip->ip_dst, ia->ia_broadaddr.sin_addr) || |
in_hosteq(ip->ip_dst, ia->ia_netbroadcast) || |
in_hosteq(ip->ip_dst, ia->ia_netbroadcast) || |
/* |
/* |
|
|
ip->ip_dst.s_addr == ia->ia_subnet || |
ip->ip_dst.s_addr == ia->ia_subnet || |
ip->ip_dst.s_addr == ia->ia_net) |
ip->ip_dst.s_addr == ia->ia_net) |
goto ours; |
goto ours; |
|
/* |
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* An interface with IP address zero accepts |
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* all packets that arrive on that interface. |
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*/ |
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if (in_nullhost(ia->ia_addr.sin_addr)) |
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goto ours; |
} |
} |
} |
} |
if (IN_MULTICAST(ip->ip_dst.s_addr)) { |
if (IN_MULTICAST(ip->ip_dst.s_addr)) { |
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* 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|IP_RF)) { |
if (ip->ip_off & ~(IP_DF|IP_RF)) { |
if (m->m_flags & M_EXT) { /* XXX */ |
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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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} |
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ip = mtod(m, struct ip *); |
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} |
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/* |
/* |
* Look for queue of fragments |
* Look for queue of fragments |
* of this datagram. |
* of this datagram. |
|
|
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 *); |
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hlen = ip->ip_hl << 2; |
} else |
} else |
if (fp) |
if (fp) |
ip_freef(fp); |
ip_freef(fp); |
|
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(*inetsw[ip_protox[ip->ip_p]].pr_input)(m, hlen); |
(*inetsw[ip_protox[ip->ip_p]].pr_input)(m, hlen); |
goto next; |
goto next; |
bad: |
bad: |
#ifdef PFIL_HOOKS |
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m0 = m; |
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for (pfh = pfil_hook_get(PFIL_BAD); pfh; pfh = pfh->pfil_link.le_next) |
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if (pfh->pfil_func) { |
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(void)pfh->pfil_func(ip, hlen, m->m_pkthdr.rcvif, 2, &m0); |
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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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m_freem(m); |
m_freem(m); |
goto next; |
goto next; |
} |
} |
|
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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 478 ip_reass(ipqe, fp) |
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Line 539 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 511 ip_reass(ipqe, fp) |
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Line 573 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 528 ip_reass(ipqe, fp) |
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Line 590 ip_reass(ipqe, fp) |
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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); |
} |
} |
|
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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); |
|
|
dropfrag: |
dropfrag: |
ipstat.ips_fragdropped++; |
ipstat.ips_fragdropped++; |
|
|
|
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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; |
Line 1160 ip_forward(m, srcrt) |
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Line 1233 ip_forward(m, srcrt) |
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icmp_error(mcopy, type, code, dest, destifp); |
icmp_error(mcopy, type, code, dest, destifp); |
} |
} |
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|
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void |
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ip_savecontrol(inp, mp, ip, m) |
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register struct inpcb *inp; |
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register struct mbuf **mp; |
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register struct ip *ip; |
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register struct mbuf *m; |
|
{ |
|
|
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if (inp->inp_socket->so_options & SO_TIMESTAMP) { |
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struct timeval tv; |
|
|
|
microtime(&tv); |
|
*mp = sbcreatecontrol((caddr_t) &tv, sizeof(tv), |
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SCM_TIMESTAMP, SOL_SOCKET); |
|
if (*mp) |
|
mp = &(*mp)->m_next; |
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} |
|
if (inp->inp_flags & INP_RECVDSTADDR) { |
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*mp = sbcreatecontrol((caddr_t) &ip->ip_dst, |
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sizeof(struct in_addr), IP_RECVDSTADDR, IPPROTO_IP); |
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if (*mp) |
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mp = &(*mp)->m_next; |
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} |
|
#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, |
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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 1169 ip_sysctl(name, namelen, oldp, oldlenp, |
|
Line 1302 ip_sysctl(name, namelen, oldp, oldlenp, |
|
void *newp; |
void *newp; |
size_t newlen; |
size_t newlen; |
{ |
{ |
|
extern int subnetsarelocal; |
|
int error; |
|
|
/* 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 1186 ip_sysctl(name, namelen, oldp, oldlenp, |
|
Line 1322 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: |
|
error = sysctl_int(oldp, oldlenp, newp, newlen, |
|
&ip_mtudisc); |
|
if (ip_mtudisc != 0 && ip_mtudisc_timeout_q == NULL) { |
|
ip_mtudisc_timeout_q = |
|
rt_timer_queue_create(ip_mtudisc_timeout); |
|
} else if (ip_mtudisc == 0 && ip_mtudisc_timeout_q != NULL) { |
|
rt_timer_queue_destroy(ip_mtudisc_timeout_q, TRUE); |
|
ip_mtudisc_timeout_q = NULL; |
|
} |
|
return error; |
|
case IPCTL_MTUDISCTIMEOUT: |
|
error = sysctl_int(oldp, oldlenp, newp, newlen, |
|
&ip_mtudisc_timeout); |
|
if (ip_mtudisc_timeout_q != NULL) |
|
rt_timer_queue_change(ip_mtudisc_timeout_q, |
|
ip_mtudisc_timeout); |
|
return (error); |
default: |
default: |
return (EOPNOTSUPP); |
return (EOPNOTSUPP); |
} |
} |