Please note that diffs are not public domain; they are subject to the copyright notices on the relevant files. =================================================================== RCS file: /ftp/cvs/cvsroot/src/sys/netinet/ip_input.c,v rcsdiff: /ftp/cvs/cvsroot/src/sys/netinet/ip_input.c,v: warning: Unknown phrases like `commitid ...;' are present. retrieving revision 1.170 retrieving revision 1.191 diff -u -p -r1.170 -r1.191 --- src/sys/netinet/ip_input.c 2003/07/03 05:03:53 1.170 +++ src/sys/netinet/ip_input.c 2003/12/07 01:18:26 1.191 @@ -1,4 +1,4 @@ -/* $NetBSD: ip_input.c,v 1.170 2003/07/03 05:03:53 itojun Exp $ */ +/* $NetBSD: ip_input.c,v 1.191 2003/12/07 01:18:26 jonathan Exp $ */ /* * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. @@ -78,11 +78,7 @@ * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. - * 3. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by the University of - * California, Berkeley and its contributors. - * 4. Neither the name of the University nor the names of its contributors + * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * @@ -102,8 +98,9 @@ */ #include -__KERNEL_RCSID(0, "$NetBSD: ip_input.c,v 1.170 2003/07/03 05:03:53 itojun Exp $"); +__KERNEL_RCSID(0, "$NetBSD: ip_input.c,v 1.191 2003/12/07 01:18:26 jonathan Exp $"); +#include "opt_inet.h" #include "opt_gateway.h" #include "opt_pfil_hooks.h" #include "opt_ipsec.h" @@ -151,6 +148,10 @@ __KERNEL_RCSID(0, "$NetBSD: ip_input.c,v #include #include #endif +#ifdef FAST_IPSEC +#include +#include +#endif /* FAST_IPSEC*/ #ifndef IPFORWARDING #ifdef GATEWAY @@ -197,6 +198,9 @@ int ip_mtudisc_timeout = IPMTUDISCTIMEOU #ifdef DIAGNOSTIC int ipprintfs = 0; #endif + +int ip_do_randomid = 0; + /* * XXX - Setting ip_checkinterface mostly implements the receive side of * the Strong ES model described in RFC 1122, but since the routing table @@ -219,21 +223,29 @@ extern struct domain inetdomain; int ipqmaxlen = IFQ_MAXLEN; u_long in_ifaddrhash; /* size of hash table - 1 */ int in_ifaddrentries; /* total number of addrs */ -struct in_ifaddrhead in_ifaddr; +struct in_ifaddrhead in_ifaddrhead; struct in_ifaddrhashhead *in_ifaddrhashtbl; u_long in_multihash; /* size of hash table - 1 */ int in_multientries; /* total number of addrs */ -struct in_multihead in_multi; struct in_multihashhead *in_multihashtbl; struct ifqueue ipintrq; struct ipstat ipstat; -u_int16_t ip_id; +uint16_t ip_id; #ifdef PFIL_HOOKS struct pfil_head inet_pfil_hook; #endif -struct ipqhead ipq; +/* IP datagram reassembly queues (hashed) */ +#define IPREASS_NHASH_LOG2 6 +#define IPREASS_NHASH (1 << IPREASS_NHASH_LOG2) +#define IPREASS_HMASK (IPREASS_NHASH - 1) +#define IPREASS_HASH(x,y) \ + (((((x) & 0xF) | ((((x) >> 8) & 0xF) << 4)) ^ (y)) & IPREASS_HMASK) +struct ipqhead ipq[IPREASS_NHASH]; +#ifdef notyet +static int nipq = 0; /* total # of reass queues */ +#endif int ipq_locked; int ip_nfragpackets = 0; int ip_maxfragpackets = 200; @@ -360,10 +372,12 @@ ip_init() if (pr->pr_domain->dom_family == PF_INET && pr->pr_protocol && pr->pr_protocol != IPPROTO_RAW) ip_protox[pr->pr_protocol] = pr - inetsw; - LIST_INIT(&ipq); - ip_id = time.tv_sec & 0xffff; + for (i = 0; i < IPREASS_NHASH; i++) + LIST_INIT(&ipq[i]); + + ip_id = time.tv_sec & 0xfffff; ipintrq.ifq_maxlen = ipqmaxlen; - TAILQ_INIT(&in_ifaddr); + TAILQ_INIT(&in_ifaddrhead); in_ifaddrhashtbl = hashinit(IN_IFADDR_HASH_SIZE, HASH_LIST, M_IFADDR, M_WAITOK, &in_ifaddrhash); in_multihashtbl = hashinit(IN_IFADDR_HASH_SIZE, HASH_LIST, M_IPMADDR, @@ -434,28 +448,25 @@ ip_input(struct mbuf *m) int downmatch; int checkif; int srcrt = 0; + u_int hash; +#ifdef FAST_IPSEC + struct m_tag *mtag; + struct tdb_ident *tdbi; + struct secpolicy *sp; + int s, error; +#endif /* FAST_IPSEC */ MCLAIM(m, &ip_rx_mowner); #ifdef DIAGNOSTIC if ((m->m_flags & M_PKTHDR) == 0) panic("ipintr no HDR"); #endif -#ifdef IPSEC - /* - * should the inner packet be considered authentic? - * see comment in ah4_input(). - */ - if (m) { - m->m_flags &= ~M_AUTHIPHDR; - m->m_flags &= ~M_AUTHIPDGM; - } -#endif /* * If no IP addresses have been set yet but the interfaces * are receiving, can't do anything with incoming packets yet. */ - if (TAILQ_FIRST(&in_ifaddr) == 0) + if (TAILQ_FIRST(&in_ifaddrhead) == 0) goto bad; ipstat.ips_total++; /* @@ -562,7 +573,7 @@ ip_input(struct mbuf *m) m_adj(m, len - m->m_pkthdr.len); } -#ifdef IPSEC +#if defined(IPSEC) || defined(FAST_IPSEC) /* ipflow (IP fast forwarding) is not compatible with IPsec. */ m->m_flags &= ~M_CANFASTFWD; #else @@ -587,6 +598,8 @@ ip_input(struct mbuf *m) */ #ifdef IPSEC if (!ipsec_getnhist(m)) +#elif defined(FAST_IPSEC) + if (!ipsec_indone(m)) #else if (1) #endif @@ -767,6 +780,34 @@ ip_input(struct mbuf *m) goto bad; } #endif +#ifdef FAST_IPSEC + mtag = m_tag_find(m, PACKET_TAG_IPSEC_IN_DONE, NULL); + s = splsoftnet(); + if (mtag != NULL) { + tdbi = (struct tdb_ident *)(mtag + 1); + sp = ipsec_getpolicy(tdbi, IPSEC_DIR_INBOUND); + } else { + sp = ipsec_getpolicybyaddr(m, IPSEC_DIR_INBOUND, + IP_FORWARDING, &error); + } + if (sp == NULL) { /* NB: can happen if error */ + splx(s); + /*XXX error stat???*/ + DPRINTF(("ip_input: no SP for forwarding\n")); /*XXX*/ + goto bad; + } + + /* + * Check security policy against packet attributes. + */ + error = ipsec_in_reject(sp, m); + KEY_FREESP(&sp); + splx(s); + if (error) { + ipstat.ips_cantforward++; + goto bad; + } +#endif /* FAST_IPSEC */ ip_forward(m, srcrt); } @@ -794,12 +835,17 @@ ours: * of this datagram. */ IPQ_LOCK(); - LIST_FOREACH(fp, &ipq, ipq_q) + hash = IPREASS_HASH(ip->ip_src.s_addr, ip->ip_id); + /* XXX LIST_FOREACH(fp, &ipq[hash], ipq_q) */ + for (fp = LIST_FIRST(&ipq[hash]); fp != NULL; + fp = LIST_NEXT(fp, ipq_q)) { if (ip->ip_id == fp->ipq_id && in_hosteq(ip->ip_src, fp->ipq_src) && in_hosteq(ip->ip_dst, fp->ipq_dst) && ip->ip_p == fp->ipq_p) goto found; + + } fp = 0; found: @@ -840,7 +886,7 @@ found: ipqe->ipqe_mff = mff; ipqe->ipqe_m = m; ipqe->ipqe_ip = ip; - m = ip_reass(ipqe, fp); + m = ip_reass(ipqe, fp, &ipq[hash]); if (m == 0) { IPQ_UNLOCK(); return; @@ -855,7 +901,7 @@ found: IPQ_UNLOCK(); } -#ifdef IPSEC +#if defined(IPSEC) /* * enforce IPsec policy checking if we are seeing last header. * note that we do not visit this with protocols with pcb layer @@ -867,6 +913,45 @@ found: goto bad; } #endif +#if FAST_IPSEC + /* + * enforce IPsec policy checking if we are seeing last header. + * note that we do not visit this with protocols with pcb layer + * code - like udp/tcp/raw ip. + */ + if ((inetsw[ip_protox[ip->ip_p]].pr_flags & PR_LASTHDR) != 0) { + /* + * Check if the packet has already had IPsec processing + * done. If so, then just pass it along. This tag gets + * set during AH, ESP, etc. input handling, before the + * packet is returned to the ip input queue for delivery. + */ + mtag = m_tag_find(m, PACKET_TAG_IPSEC_IN_DONE, NULL); + s = splsoftnet(); + if (mtag != NULL) { + tdbi = (struct tdb_ident *)(mtag + 1); + sp = ipsec_getpolicy(tdbi, IPSEC_DIR_INBOUND); + } else { + sp = ipsec_getpolicybyaddr(m, IPSEC_DIR_INBOUND, + IP_FORWARDING, &error); + } + if (sp != NULL) { + /* + * Check security policy against packet attributes. + */ + error = ipsec_in_reject(sp, m); + KEY_FREESP(&sp); + } else { + /* XXX error stat??? */ + error = EINVAL; +DPRINTF(("ip_input: no SP, packet discarded\n"));/*XXX*/ + goto bad; + } + splx(s); + if (error) + goto bad; + } +#endif /* FAST_IPSEC */ /* * Switch out to protocol's input routine. @@ -898,9 +983,10 @@ badcsum: * is given as fp; otherwise have to make a chain. */ struct mbuf * -ip_reass(ipqe, fp) +ip_reass(ipqe, fp, ipqhead) struct ipqent *ipqe; struct ipq *fp; + struct ipqhead *ipqhead; { struct mbuf *m = ipqe->ipqe_m; struct ipqent *nq, *p, *q; @@ -937,7 +1023,7 @@ ip_reass(ipqe, fp) M_FTABLE, M_NOWAIT); if (fp == NULL) goto dropfrag; - LIST_INSERT_HEAD(&ipq, fp, ipq_q); + LIST_INSERT_HEAD(ipqhead, fp, ipq_q); fp->ipq_ttl = IPFRAGTTL; fp->ipq_p = ipqe->ipqe_ip->ip_p; fp->ipq_id = ipqe->ipqe_ip->ip_id; @@ -1103,27 +1189,47 @@ ip_freef(fp) void ip_slowtimo() { + static u_int dropscanidx = 0; + u_int i; struct ipq *fp, *nfp; int s = splsoftnet(); IPQ_LOCK(); - for (fp = LIST_FIRST(&ipq); fp != NULL; fp = nfp) { - nfp = LIST_NEXT(fp, ipq_q); - if (--fp->ipq_ttl == 0) { - ipstat.ips_fragtimeout++; - ip_freef(fp); + for (i = 0; i < IPREASS_NHASH; i++) { + for (fp = LIST_FIRST(&ipq[i]); fp != NULL; fp = nfp) { + nfp = LIST_NEXT(fp, ipq_q); + if (--fp->ipq_ttl == 0) { + ipstat.ips_fragtimeout++; + ip_freef(fp); + } } } /* * If we are over the maximum number of fragments * (due to the limit being lowered), drain off - * enough to get down to the new limit. + * enough to get down to the new limit. Start draining + * from the reassembly hashqueue most recently drained. */ if (ip_maxfragpackets < 0) ; else { - while (ip_nfragpackets > ip_maxfragpackets && LIST_FIRST(&ipq)) - ip_freef(LIST_FIRST(&ipq)); + int wrapped = 0; + + i = dropscanidx; + while (ip_nfragpackets > ip_maxfragpackets && wrapped == 0) { + while (LIST_FIRST(&ipq[i]) != NULL) + ip_freef(LIST_FIRST(&ipq[i])); + if (++i >= IPREASS_NHASH) { + i = 0; + } + /* + * Dont scan forever even if fragment counters are + * wrong: stop after scanning entire reassembly queue. + */ + if (i == dropscanidx) + wrapped = 1; + } + dropscanidx = i; } IPQ_UNLOCK(); #ifdef GATEWAY @@ -1138,6 +1244,7 @@ ip_slowtimo() void ip_drain() { + int i; /* * We may be called from a device's interrupt context. If @@ -1146,9 +1253,14 @@ ip_drain() if (ipq_lock_try() == 0) return; - while (LIST_FIRST(&ipq) != NULL) { - ipstat.ips_fragdropped++; - ip_freef(LIST_FIRST(&ipq)); + for (i = 0; i < IPREASS_NHASH; i++) { + struct ipqhead *ipqh = &ipq[i]; + struct ipq *fp, *nfp; + for (fp = LIST_FIRST(ipqh); fp != NULL; fp = nfp) { + nfp = LIST_NEXT(fp, ipq_q); + ip_freef(fp); + ipstat.ips_fragdropped++; + } } IPQ_UNLOCK(); @@ -1571,7 +1683,7 @@ ip_forward(m, srcrt) struct mbuf *mcopy; n_long dest; struct ifnet *destifp; -#ifdef IPSEC +#if defined(IPSEC) || defined(FAST_IPSEC) struct ifnet dummyifp; #endif @@ -1664,12 +1776,10 @@ ip_forward(m, srcrt) } } -#ifdef IPSEC - /* Don't lookup socket in forwarding case */ - (void)ipsec_setsocket(m, NULL); -#endif error = ip_output(m, (struct mbuf *)0, &ipforward_rt, - (IP_FORWARDING | (ip_directedbcast ? IP_ALLOWBROADCAST : 0)), 0); + (IP_FORWARDING | (ip_directedbcast ? IP_ALLOWBROADCAST : 0)), + (struct ip_moptions *)NULL, (struct socket *)NULL); + if (error) ipstat.ips_cantforward++; else { @@ -1709,7 +1819,7 @@ ip_forward(m, srcrt) case EMSGSIZE: type = ICMP_UNREACH; code = ICMP_UNREACH_NEEDFRAG; -#ifndef IPSEC +#if !defined(IPSEC) && !defined(FAST_IPSEC) if (ipforward_rt.ro_rt) destifp = ipforward_rt.ro_rt->rt_ifp; #else @@ -1760,7 +1870,11 @@ ip_forward(m, srcrt) } } +#ifdef IPSEC key_freesp(sp); +#else + KEY_FREESP(&sp); +#endif } } #endif /*IPSEC*/ @@ -1847,158 +1961,184 @@ ip_savecontrol(inp, mp, ip, m) } } -int -ip_sysctl(name, namelen, oldp, oldlenp, newp, newlen) - int *name; - u_int namelen; - void *oldp; - size_t *oldlenp; - void *newp; - size_t newlen; +/* + * sysctl helper routine for net.inet.ip.mtudisctimeout. checks the + * range of the new value and tweaks timers if it changes. + */ +static int +sysctl_net_inet_ip_pmtudto(SYSCTLFN_ARGS) { - extern int subnetsarelocal, hostzeroisbroadcast; + int error, tmp; + struct sysctlnode node; - int error, old; - - /* All sysctl names at this level are terminal. */ - if (namelen != 1) - return (ENOTDIR); - - switch (name[0]) { - case IPCTL_FORWARDING: - return (sysctl_int(oldp, oldlenp, newp, newlen, &ipforwarding)); - case IPCTL_SENDREDIRECTS: - return (sysctl_int(oldp, oldlenp, newp, newlen, - &ipsendredirects)); - case IPCTL_DEFTTL: - return (sysctl_int(oldp, oldlenp, newp, newlen, &ip_defttl)); -#ifdef notyet - case IPCTL_DEFMTU: - return (sysctl_int(oldp, oldlenp, newp, newlen, &ip_mtu)); -#endif - case IPCTL_FORWSRCRT: - /* Don't allow this to change in a secure environment. */ - if (securelevel > 0) - return (sysctl_rdint(oldp, oldlenp, newp, - ip_forwsrcrt)); - else - return (sysctl_int(oldp, oldlenp, newp, newlen, - &ip_forwsrcrt)); - case IPCTL_DIRECTEDBCAST: - return (sysctl_int(oldp, oldlenp, newp, newlen, - &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 (error == 0 && ip_mtudisc == 0) - rt_timer_queue_remove_all(ip_mtudisc_timeout_q, TRUE); - return error; - case IPCTL_ANONPORTMIN: - old = anonportmin; - error = sysctl_int(oldp, oldlenp, newp, newlen, &anonportmin); - if (anonportmin >= anonportmax || anonportmin < 0 - || 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 < 0 - || anonportmax > 65535 -#ifndef IPNOPRIVPORTS - || anonportmax < IPPORT_RESERVED -#endif - ) { - anonportmax = old; - return (EINVAL); - } - return (error); - case IPCTL_MTUDISCTIMEOUT: - old = ip_mtudisc_timeout; - error = sysctl_int(oldp, oldlenp, newp, newlen, - &ip_mtudisc_timeout); - if (ip_mtudisc_timeout < 0) { - ip_mtudisc_timeout = old; - return (EINVAL); - } - if (error == 0) - rt_timer_queue_change(ip_mtudisc_timeout_q, - ip_mtudisc_timeout); + node = *rnode; + tmp = ip_mtudisc_timeout; + node.sysctl_data = &tmp; + error = sysctl_lookup(SYSCTLFN_CALL(&node)); + if (error || newp == NULL) return (error); + if (tmp < 0) + return (EINVAL); + + ip_mtudisc_timeout = tmp; + rt_timer_queue_change(ip_mtudisc_timeout_q, ip_mtudisc_timeout); + + return (0); +} + #ifdef GATEWAY - case IPCTL_MAXFLOWS: - { - int s; +/* + * sysctl helper routine for net.inet.ip.maxflows. apparently if + * maxflows is even looked up, we "reap flows". + */ +static int +sysctl_net_inet_ip_maxflows(SYSCTLFN_ARGS) +{ + int s; - error = sysctl_int(oldp, oldlenp, newp, newlen, - &ip_maxflows); - s = splsoftnet(); - ipflow_reap(0); - splx(s); - return (error); - } -#endif - case IPCTL_HOSTZEROBROADCAST: - return (sysctl_int(oldp, oldlenp, newp, newlen, - &hostzeroisbroadcast)); -#if NGIF > 0 - case IPCTL_GIF_TTL: - return (sysctl_int(oldp, oldlenp, newp, newlen, - &ip_gif_ttl)); -#endif + s = sysctl_lookup(SYSCTLFN_CALL(rnode)); + if (s) + return (s); + + s = splsoftnet(); + ipflow_reap(0); + splx(s); -#if NGRE > 0 - case IPCTL_GRE_TTL: - return (sysctl_int(oldp, oldlenp, newp, newlen, - &ip_gre_ttl)); -#endif + return (0); +} +#endif /* GATEWAY */ -#ifndef IPNOPRIVPORTS - case IPCTL_LOWPORTMIN: - old = lowportmin; - error = sysctl_int(oldp, oldlenp, newp, newlen, &lowportmin); - if (lowportmin >= lowportmax - || lowportmin > IPPORT_RESERVEDMAX - || lowportmin < IPPORT_RESERVEDMIN - ) { - lowportmin = old; - return (EINVAL); - } - return (error); - case IPCTL_LOWPORTMAX: - old = lowportmax; - error = sysctl_int(oldp, oldlenp, newp, newlen, &lowportmax); - if (lowportmin >= lowportmax - || lowportmax > IPPORT_RESERVEDMAX - || lowportmax < IPPORT_RESERVEDMIN - ) { - lowportmax = old; - return (EINVAL); - } - return (error); -#endif - case IPCTL_MAXFRAGPACKETS: - return (sysctl_int(oldp, oldlenp, newp, newlen, - &ip_maxfragpackets)); - - case IPCTL_CHECKINTERFACE: - return (sysctl_int(oldp, oldlenp, newp, newlen, - &ip_checkinterface)); - default: - return (EOPNOTSUPP); - } - /* NOTREACHED */ +SYSCTL_SETUP(sysctl_net_inet_ip_setup, "sysctl net.inet.ip subtree setup") +{ + extern int subnetsarelocal, hostzeroisbroadcast; + + sysctl_createv(SYSCTL_PERMANENT, + CTLTYPE_NODE, "net", NULL, + NULL, 0, NULL, 0, + CTL_NET, CTL_EOL); + sysctl_createv(SYSCTL_PERMANENT, + CTLTYPE_NODE, "inet", NULL, + NULL, 0, NULL, 0, + CTL_NET, PF_INET, CTL_EOL); + sysctl_createv(SYSCTL_PERMANENT, + CTLTYPE_NODE, "ip", NULL, + NULL, 0, NULL, 0, + CTL_NET, PF_INET, IPPROTO_IP, CTL_EOL); + + sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, + CTLTYPE_INT, "forwarding", NULL, + NULL, 0, &ipforwarding, 0, + CTL_NET, PF_INET, IPPROTO_IP, + IPCTL_FORWARDING, CTL_EOL); + sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, + CTLTYPE_INT, "redirect", NULL, + NULL, 0, &ipsendredirects, 0, + CTL_NET, PF_INET, IPPROTO_IP, + IPCTL_SENDREDIRECTS, CTL_EOL); + sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, + CTLTYPE_INT, "ttl", NULL, + NULL, 0, &ip_defttl, 0, + CTL_NET, PF_INET, IPPROTO_IP, + IPCTL_DEFTTL, CTL_EOL); +#ifdef IPCTL_DEFMTU + sysctl_createv(SYSCTL_PERMANENT /* |SYSCTL_READWRITE? */, + CTLTYPE_INT, "mtu", NULL, + NULL, 0, &ip_mtu, 0, + CTL_NET, PF_INET, IPPROTO_IP, + IPCTL_DEFMTU, CTL_EOL); +#endif /* IPCTL_DEFMTU */ + sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READONLY1, + CTLTYPE_INT, "forwsrcrt", NULL, + NULL, 0, &ip_forwsrcrt, 0, + CTL_NET, PF_INET, IPPROTO_IP, + IPCTL_FORWSRCRT, CTL_EOL); + sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, + CTLTYPE_INT, "directed-broadcast", NULL, + NULL, 0, &ip_directedbcast, 0, + CTL_NET, PF_INET, IPPROTO_IP, + IPCTL_DIRECTEDBCAST, CTL_EOL); + sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, + CTLTYPE_INT, "allowsrcrt", NULL, + NULL, 0, &ip_allowsrcrt, 0, + CTL_NET, PF_INET, IPPROTO_IP, + IPCTL_ALLOWSRCRT, CTL_EOL); + sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, + CTLTYPE_INT, "subnetsarelocal", NULL, + NULL, 0, &subnetsarelocal, 0, + CTL_NET, PF_INET, IPPROTO_IP, + IPCTL_SUBNETSARELOCAL, CTL_EOL); + sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, + CTLTYPE_INT, "mtudisc", NULL, + NULL, 0, &ip_mtudisc, 0, + CTL_NET, PF_INET, IPPROTO_IP, + IPCTL_MTUDISC, CTL_EOL); + sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, + CTLTYPE_INT, "anonportmin", NULL, + sysctl_net_inet_ip_ports, 0, &anonportmin, 0, + CTL_NET, PF_INET, IPPROTO_IP, + IPCTL_ANONPORTMIN, CTL_EOL); + sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, + CTLTYPE_INT, "anonportmax", NULL, + sysctl_net_inet_ip_ports, 0, &anonportmax, 0, + CTL_NET, PF_INET, IPPROTO_IP, + IPCTL_ANONPORTMAX, CTL_EOL); + sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, + CTLTYPE_INT, "mtudisctimeout", NULL, + sysctl_net_inet_ip_pmtudto, 0, &ip_mtudisc_timeout, 0, + CTL_NET, PF_INET, IPPROTO_IP, + IPCTL_MTUDISCTIMEOUT, CTL_EOL); +#ifdef GATEWAY + sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, + CTLTYPE_INT, "maxflows", NULL, + sysctl_net_inet_ip_maxflows, 0, &ip_maxflows, 0, + CTL_NET, PF_INET, IPPROTO_IP, + IPCTL_MAXFLOWS, CTL_EOL); +#endif /* GATEWAY */ + sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, + CTLTYPE_INT, "hostzerobroadcast", NULL, + NULL, 0, &hostzeroisbroadcast, 0, + CTL_NET, PF_INET, IPPROTO_IP, + IPCTL_HOSTZEROBROADCAST, CTL_EOL); +#if NGIF > 0 + sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, + CTLTYPE_INT, "gifttl", NULL, + NULL, 0, &ip_gif_ttl, 0, + CTL_NET, PF_INET, IPPROTO_IP, + IPCTL_GIF_TTL, CTL_EOL); +#endif /* NGIF */ +#ifndef IPNOPRIVPORTS + sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, + CTLTYPE_INT, "lowportmin", NULL, + sysctl_net_inet_ip_ports, 0, &lowportmin, 0, + CTL_NET, PF_INET, IPPROTO_IP, + IPCTL_LOWPORTMIN, CTL_EOL); + sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, + CTLTYPE_INT, "lowportmax", NULL, + sysctl_net_inet_ip_ports, 0, &lowportmax, 0, + CTL_NET, PF_INET, IPPROTO_IP, + IPCTL_LOWPORTMAX, CTL_EOL); +#endif /* IPNOPRIVPORTS */ + sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, + CTLTYPE_INT, "maxfragpackets", NULL, + NULL, 0, &ip_maxfragpackets, 0, + CTL_NET, PF_INET, IPPROTO_IP, + IPCTL_MAXFRAGPACKETS, CTL_EOL); +#if NGRE > 0 + sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, + CTLTYPE_INT, "grettl", NULL, + NULL, 0, &ip_gre_ttl, 0, + CTL_NET, PF_INET, IPPROTO_IP, + IPCTL_GRE_TTL, CTL_EOL); +#endif /* NGRE */ + sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, + CTLTYPE_INT, "checkinterface", NULL, + NULL, 0, &ip_checkinterface, 0, + CTL_NET, PF_INET, IPPROTO_IP, + IPCTL_CHECKINTERFACE, CTL_EOL); + sysctl_createv(SYSCTL_PERMANENT|SYSCTL_READWRITE, + CTLTYPE_INT, "random_id", NULL, + NULL, 0, &ip_do_randomid, 0, + CTL_NET, PF_INET, IPPROTO_IP, + IPCTL_RANDOMID, CTL_EOL); }