ipsec_netbsd.c

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    1 /*      $NetBSD: ipsec_netbsd.c,v 1.17.12.1 2007/05/24 19:13:11 pavel Exp $     */
    2 /*      $KAME: esp_input.c,v 1.60 2001/09/04 08:43:19 itojun Exp $      */
    3 /*      $KAME: ah_input.c,v 1.64 2001/09/04 08:43:19 itojun Exp $       */
    4 
    5 /*
    6  * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
    7  * All rights reserved.
    8  *
    9  * Redistribution and use in source and binary forms, with or without
   10  * modification, are permitted provided that the following conditions
   11  * are met:
   12  * 1. Redistributions of source code must retain the above copyright
   13  *    notice, this list of conditions and the following disclaimer.
   14  * 2. Redistributions in binary form must reproduce the above copyright
   15  *    notice, this list of conditions and the following disclaimer in the
   16  *    documentation and/or other materials provided with the distribution.
   17  * 3. Neither the name of the project nor the names of its contributors
   18  *    may be used to endorse or promote products derived from this software
   19  *    without specific prior written permission.
   20  *
   21  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
   22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
   25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   31  * SUCH DAMAGE.
   32  */
   33 
   34 #include <sys/cdefs.h>
   35 __KERNEL_RCSID(0, "$NetBSD: ipsec_netbsd.c,v 1.17.12.1 2007/05/24 19:13:11 pavel Exp $");
   36 
   37 #include "opt_inet.h"
   38 #include "opt_ipsec.h"
   39 
   40 #include <sys/param.h>
   41 #include <sys/systm.h>
   42 #include <sys/malloc.h>
   43 #include <sys/mbuf.h>
   44 #include <sys/domain.h>
   45 #include <sys/protosw.h>
   46 #include <sys/socket.h>
   47 #include <sys/errno.h>
   48 #include <sys/time.h>
   49 #include <sys/kernel.h>
   50 #include <sys/sysctl.h>
   51 
   52 #include <net/if.h>
   53 #include <net/route.h>
   54 #include <net/netisr.h>
   55 #include <machine/cpu.h>
   56 
   57 #include <netinet/in.h>
   58 #include <netinet/in_systm.h>
   59 #include <netinet/in_var.h>
   60 #include <netinet/ip.h>
   61 #include <netinet/ip_var.h>
   62 #include <netinet/ip_ecn.h>
   63 #include <netinet/ip_icmp.h>
   64 
   65 
   66 #include <netipsec/ipsec.h>
   67 #include <netipsec/ipsec_var.h>
   68 #include <netipsec/key.h>
   69 #include <netipsec/keydb.h>
   70 #include <netipsec/key_debug.h>
   71 #include <netipsec/ah.h>
   72 #include <netipsec/ah_var.h>
   73 #include <netipsec/esp.h>
   74 #include <netipsec/esp_var.h>
   75 #include <netipsec/ipip_var.h>
   76 #include <netipsec/ipcomp_var.h>
   77 
   78 #ifdef INET6
   79 #include <netipsec/ipsec6.h>
   80 #include <netinet6/ip6protosw.h>
   81 #include <netinet/icmp6.h>
   82 #endif
   83 
   84 #include <machine/stdarg.h>
   85 
   86 
   87 
   88 #include <netipsec/key.h>
   89 
   90 /* assumes that ip header and ah header are contiguous on mbuf */
   91 void *
   92 ah4_ctlinput(cmd, sa, v)
   93         int cmd;
   94         struct sockaddr *sa;
   95         void *v;
   96 {
   97         struct ip *ip = v;
   98         struct ah *ah;
   99         struct icmp *icp;
  100         struct secasvar *sav;
  101 
  102         if (sa->sa_family != AF_INET ||
  103                 sa->sa_len != sizeof(struct sockaddr_in))
  104                 return NULL;
  105         if ((unsigned)cmd >= PRC_NCMDS)
  106                 return NULL;
  107 #ifndef notyet
  108         /* jonathan@NetBSD.org: XXX FIXME */
  109         (void) ip; (void) ah; (void) icp; (void) sav;
  110 #else
  111         if (cmd == PRC_MSGSIZE && ip_mtudisc && ip && ip->ip_v == 4) {
  112                 /*
  113                  * Check to see if we have a valid SA corresponding to
  114                  * the address in the ICMP message payload.
  115                  */
  116                 ah = (struct ah *)((caddr_t)ip + (ip->ip_hl << 2));
  117                 if ((sav = key_allocsa(AF_INET,
  118                                            (caddr_t) &ip->ip_src,
  119                                            (caddr_t) &ip->ip_dst,
  120                                            IPPROTO_AH, ah->ah_spi)) == NULL)
  121                         return NULL;
  122                 if (sav->state != SADB_SASTATE_MATURE &&
  123                         sav->state != SADB_SASTATE_DYING) {
  124                         key_freesav(sav);
  125                         return NULL;
  126                 }
  127 
  128                 /* XXX Further validation? */
  129 
  130                 key_freesav(sav);
  131 
  132                 /*
  133                  * Now that we've validated that we are actually communicating
  134                  * with the host indicated in the ICMP message, locate the
  135                  * ICMP header, recalculate the new MTU, and create the
  136                  * corresponding routing entry.
  137                  */
  138                 icp = (struct icmp *)((caddr_t)ip -
  139                         offsetof(struct icmp, icmp_ip));
  140                 icmp_mtudisc(icp, ip->ip_dst);
  141 
  142                 return NULL;
  143         }
  144 #endif
  145 
  146         return NULL;
  147 }
  148 
  149 /* assumes that ip header and esp header are contiguous on mbuf */
  150 void *
  151 esp4_ctlinput(cmd, sa, v)
  152         int cmd;
  153         struct sockaddr *sa;
  154         void *v;
  155 {
  156         struct ip *ip = v;
  157         struct esp *esp;
  158         struct icmp *icp;
  159         struct secasvar *sav;
  160 
  161         if (sa->sa_family != AF_INET ||
  162             sa->sa_len != sizeof(struct sockaddr_in))
  163                 return NULL;
  164         if ((unsigned)cmd >= PRC_NCMDS)
  165                 return NULL;
  166 #ifndef notyet
  167         /* jonathan@NetBSD.org: XXX FIXME */
  168         (void) ip; (void) esp; (void) icp; (void) sav;
  169 #else
  170         if (cmd == PRC_MSGSIZE && ip_mtudisc && ip && ip->ip_v == 4) {
  171                 /*
  172                  * Check to see if we have a valid SA corresponding to
  173                  * the address in the ICMP message payload.
  174                  */
  175                 esp = (struct esp *)((caddr_t)ip + (ip->ip_hl << 2));
  176                 if ((sav = key_allocsa(AF_INET,
  177                                        (caddr_t) &ip->ip_src,
  178                                        (caddr_t) &ip->ip_dst,
  179                                        IPPROTO_ESP, esp->esp_spi)) == NULL)
  180                         return NULL;
  181                 if (sav->state != SADB_SASTATE_MATURE &&
  182                     sav->state != SADB_SASTATE_DYING) {
  183                         key_freesav(sav);
  184                         return NULL;
  185                 }
  186 
  187                 /* XXX Further validation? */
  188 
  189                 key_freesav(sav);
  190 
  191                 /*
  192                  * Now that we've validated that we are actually communicating
  193                  * with the host indicated in the ICMP message, locate the
  194                  * ICMP header, recalculate the new MTU, and create the
  195                  * corresponding routing entry.
  196                  */
  197                 icp = (struct icmp *)((caddr_t)ip -
  198                     offsetof(struct icmp, icmp_ip));
  199                 icmp_mtudisc(icp, ip->ip_dst);
  200 
  201                 return NULL;
  202         }
  203 #endif
  204 
  205         return NULL;
  206 }
  207 
  208 #ifdef INET6
  209 void
  210 ah6_ctlinput(cmd, sa, d)
  211        int cmd;
  212        struct sockaddr *sa;
  213        void *d;
  214 {
  215        const struct newah *ahp;
  216        struct newah ah;
  217        struct secasvar *sav;
  218        struct ip6_hdr *ip6;
  219        struct mbuf *m;
  220        struct ip6ctlparam *ip6cp = NULL;
  221        int off;
  222 
  223        if (sa->sa_family != AF_INET6 ||
  224            sa->sa_len != sizeof(struct sockaddr_in6))
  225                return;
  226        if ((unsigned)cmd >= PRC_NCMDS)
  227                return;
  228 
  229        /* if the parameter is from icmp6, decode it. */
  230        if (d != NULL) {
  231                ip6cp = (struct ip6ctlparam *)d;
  232                m = ip6cp->ip6c_m;
  233                ip6 = ip6cp->ip6c_ip6;
  234                off = ip6cp->ip6c_off;
  235        } else {
  236                m = NULL;
  237                ip6 = NULL;
  238                off = 0;
  239        }
  240 
  241        if (ip6) {
  242                /*
  243                 * XXX: We assume that when ip6 is non NULL,
  244                 * M and OFF are valid.
  245                 */
  246 
  247                /* check if we can safely examine src and dst ports */
  248                if (m->m_pkthdr.len < off + sizeof(ah))
  249                        return;
  250 
  251                if (m->m_len < off + sizeof(ah)) {
  252                        /*
  253                         * this should be rare case,
  254                         * so we compromise on this copy...
  255                         */
  256                        m_copydata(m, off, sizeof(ah), (caddr_t)&ah);
  257                        ahp = &ah;
  258                } else
  259                        ahp = (struct newah *)(mtod(m, caddr_t) + off);
  260 
  261                if (cmd == PRC_MSGSIZE) {
  262                        int valid = 0;
  263 
  264                        /*
  265                         * Check to see if we have a valid SA corresponding
  266                         * to the address in the ICMP message payload.
  267                         */
  268                        sav = KEY_ALLOCSA((union sockaddr_union*)sa,
  269                                          IPPROTO_AH, ahp->ah_spi);
  270 
  271                        if (sav) {
  272                                if (sav->state == SADB_SASTATE_MATURE ||
  273                                    sav->state == SADB_SASTATE_DYING)
  274                                        valid++;
  275                                KEY_FREESAV(&sav);
  276                        }
  277 
  278                        /* XXX Further validation? */
  279 
  280                        /*
  281                         * Depending on the value of "valid" and routing 
  282                         * table size (mtudisc_{hi,lo}wat), we will:
  283                         * - recalcurate the new MTU and create the
  284                         *   corresponding routing entry, or
  285                         * - ignore the MTU change notification.
  286                         */
  287                        icmp6_mtudisc_update((struct ip6ctlparam *)d,valid);
  288                }
  289 
  290                /* we normally notify single pcb here */
  291        } else {
  292                /* we normally notify any pcb here */
  293        }
  294 }
  295 
  296 
  297 
  298 void
  299 esp6_ctlinput(cmd, sa, d)
  300         int cmd;
  301         struct sockaddr *sa;
  302         void *d;
  303 {
  304         const struct newesp *espp;
  305         struct newesp esp;
  306         struct ip6ctlparam *ip6cp = NULL, ip6cp1;
  307         struct secasvar *sav;
  308         struct ip6_hdr *ip6;
  309         struct mbuf *m;
  310         int off;
  311         struct sockaddr_in6 *sa6_src, *sa6_dst;
  312 
  313         if (sa->sa_family != AF_INET6 ||
  314             sa->sa_len != sizeof(struct sockaddr_in6))
  315                 return;
  316         if ((unsigned)cmd >= PRC_NCMDS)
  317                 return;
  318 
  319         /* if the parameter is from icmp6, decode it. */
  320         if (d != NULL) {
  321                 ip6cp = (struct ip6ctlparam *)d;
  322                 m = ip6cp->ip6c_m;
  323                 ip6 = ip6cp->ip6c_ip6;
  324                 off = ip6cp->ip6c_off;
  325         } else {
  326                 m = NULL;
  327                 ip6 = NULL;
  328                 off = 0;
  329         }
  330 
  331         if (ip6) {
  332                 /*
  333                  * Notify the error to all possible sockets via pfctlinput2.
  334                  * Since the upper layer information (such as protocol type,
  335                  * source and destination ports) is embedded in the encrypted
  336                  * data and might have been cut, we can't directly call
  337                  * an upper layer ctlinput function. However, the pcbnotify
  338                  * function will consider source and destination addresses
  339                  * as well as the flow info value, and may be able to find
  340                  * some PCB that should be notified.
  341                  * Although pfctlinput2 will call esp6_ctlinput(), there is
  342                  * no possibility of an infinite loop of function calls,
  343                  * because we don't pass the inner IPv6 header.
  344                  */
  345                 bzero(&ip6cp1, sizeof(ip6cp1));
  346                 ip6cp1.ip6c_src = ip6cp->ip6c_src;
  347                 pfctlinput2(cmd, sa, (void *)&ip6cp1);
  348 
  349                 /*
  350                  * Then go to special cases that need ESP header information.
  351                  * XXX: We assume that when ip6 is non NULL,
  352                  * M and OFF are valid.
  353                  */
  354 
  355                 /* check if we can safely examine src and dst ports */
  356                 if (m->m_pkthdr.len < off + sizeof(esp))
  357                         return;
  358 
  359                 if (m->m_len < off + sizeof(esp)) {
  360                         /*
  361                          * this should be rare case,
  362                          * so we compromise on this copy...
  363                          */
  364                         m_copydata(m, off, sizeof(esp), (caddr_t)&esp);
  365                         espp = &esp;
  366                 } else
  367                         espp = (struct newesp*)(mtod(m, caddr_t) + off);
  368 
  369                 if (cmd == PRC_MSGSIZE) {
  370                         int valid = 0;
  371 
  372                         /*
  373                          * Check to see if we have a valid SA corresponding to
  374                          * the address in the ICMP message payload.
  375                          */
  376                         sa6_src = ip6cp->ip6c_src;
  377                         sa6_dst = (struct sockaddr_in6 *)sa;
  378 #ifdef KAME
  379                         sav = key_allocsa(AF_INET6,
  380                                           (caddr_t)&sa6_src->sin6_addr,
  381                                           (caddr_t)&sa6_dst->sin6_addr,
  382                                           IPPROTO_ESP, espp->esp_spi);
  383 #else
  384                         /* jonathan@NetBSD.org: XXX FIXME */
  385                         (void)sa6_src; (void)sa6_dst;
  386                         sav = KEY_ALLOCSA((union sockaddr_union*)sa,
  387                                           IPPROTO_ESP, espp->esp_spi);
  388 
  389 #endif
  390                         if (sav) {
  391                                 if (sav->state == SADB_SASTATE_MATURE ||
  392                                     sav->state == SADB_SASTATE_DYING)
  393                                         valid++;
  394                                 KEY_FREESAV(&sav);
  395                         }
  396 
  397                         /* XXX Further validation? */
  398 
  399                         /*
  400                          * Depending on the value of "valid" and routing table
  401                          * size (mtudisc_{hi,lo}wat), we will:
  402                          * - recalcurate the new MTU and create the
  403                          *   corresponding routing entry, or
  404                          * - ignore the MTU change notification.
  405                          */
  406                         icmp6_mtudisc_update((struct ip6ctlparam *)d, valid);
  407                 }
  408         } else {
  409                 /* we normally notify any pcb here */
  410         }
  411 }
  412 #endif /* INET6 */
  413 
  414 static int
  415 sysctl_fast_ipsec(SYSCTLFN_ARGS)
  416 {
  417         int error, t;
  418         struct sysctlnode node;
  419 
  420         node = *rnode;
  421         t = *(int*)rnode->sysctl_data;
  422         node.sysctl_data = &t;
  423         error = sysctl_lookup(SYSCTLFN_CALL(&node));
  424         if (error || newp == NULL)
  425                 return (error);
  426 
  427         switch (rnode->sysctl_num) {
  428         case IPSECCTL_DEF_ESP_TRANSLEV:
  429         case IPSECCTL_DEF_ESP_NETLEV:
  430         case IPSECCTL_DEF_AH_TRANSLEV:
  431         case IPSECCTL_DEF_AH_NETLEV:
  432                 if (t != IPSEC_LEVEL_USE &&
  433                     t != IPSEC_LEVEL_REQUIRE)
  434                         return (EINVAL);
  435                 ipsec_invalpcbcacheall();
  436                 break;
  437         case IPSECCTL_DEF_POLICY:
  438                 if (t != IPSEC_POLICY_DISCARD &&
  439                     t != IPSEC_POLICY_NONE)
  440                         return (EINVAL);
  441                 ipsec_invalpcbcacheall();
  442                 break;
  443         default:
  444                 return (EINVAL);
  445         }
  446 
  447         *(int*)rnode->sysctl_data = t;
  448 
  449         return (0);
  450 }
  451 
  452 #ifdef IPSEC_DEBUG
  453 static int
  454 sysctl_fast_ipsec_test(SYSCTLFN_ARGS)
  455 {
  456         int t, error;
  457         struct sysctlnode node;
  458 
  459         node = *rnode; 
  460         t = *(int*)rnode->sysctl_data;
  461         node.sysctl_data = &t;
  462         error = sysctl_lookup(SYSCTLFN_CALL(&node));
  463         if (error || newp == NULL)
  464                 return (error);
  465 
  466         if (t < 0 || t > 1)
  467                 return EINVAL;
  468 
  469         if (rnode->sysctl_data == &ipsec_replay)
  470                 printf("fast_ipsec: Anti-Replay service %s\n",
  471                     (t == 1) ? "deactivated" : "activated");
  472         else if (rnode->sysctl_data == &ipsec_integrity)
  473                  printf("fast_ipsec: HMAC corruption %s\n",
  474                      (t == 0) ? "deactivated" : "activated");
  475 
  476         *(int*)rnode->sysctl_data = t;
  477 
  478         return 0;
  479 }
  480 #endif
  481 
  482 /* XXX will need a different oid at parent */
  483 SYSCTL_SETUP(sysctl_net_inet_fast_ipsec_setup, "sysctl net.inet.ipsec subtree setup")
  484 {
  485         const struct sysctlnode *_ipsec;
  486         int ipproto_ipsec;
  487 
  488         sysctl_createv(clog, 0, NULL, NULL,
  489                        CTLFLAG_PERMANENT,
  490                        CTLTYPE_NODE, "net", NULL,
  491                        NULL, 0, NULL, 0,
  492                        CTL_NET, CTL_EOL);
  493         sysctl_createv(clog, 0, NULL, NULL,
  494                        CTLFLAG_PERMANENT,
  495                        CTLTYPE_NODE, "inet", NULL,
  496                        NULL, 0, NULL, 0,
  497                        CTL_NET, PF_INET, CTL_EOL);
  498 
  499         /*
  500          * in numerical order:
  501          *
  502          * net.inet.ipip:       CTL_NET.PF_INET.IPPROTO_IPIP
  503          * net.inet.esp:        CTL_NET.PF_INET.IPPROTO_ESP
  504          * net.inet.ah:         CTL_NET.PF_INET.IPPROTO_AH
  505          * net.inet.ipcomp:     CTL_NET.PF_INET.IPPROTO_IPCOMP
  506          * net.inet.ipsec:      CTL_NET.PF_INET.CTL_CREATE
  507          *
  508          * this creates separate trees by name, but maintains that the
  509          * ipsec name leads to all the old leaves.
  510          */
  511 
  512         /* create net.inet.ipip */
  513         sysctl_createv(clog, 0, NULL, NULL,
  514                        CTLFLAG_PERMANENT,
  515                        CTLTYPE_NODE, "ipip", NULL,
  516                        NULL, 0, NULL, 0,
  517                        CTL_NET, PF_INET, IPPROTO_IPIP, CTL_EOL);
  518         sysctl_createv(clog, 0, NULL, NULL,
  519                        CTLFLAG_PERMANENT|CTLFLAG_READONLY,
  520                        CTLTYPE_STRUCT, "ipip_stats", NULL,
  521                        NULL, 0, &ipipstat, sizeof(ipipstat),
  522                        CTL_NET, PF_INET, IPPROTO_IPIP,
  523                        CTL_CREATE, CTL_EOL);
  524 
  525         /* create net.inet.esp subtree under IPPROTO_ESP */
  526         sysctl_createv(clog, 0, NULL, NULL,
  527                        CTLFLAG_PERMANENT,
  528                        CTLTYPE_NODE, "esp", NULL,
  529                        NULL, 0, NULL, 0,
  530                        CTL_NET, PF_INET, IPPROTO_ESP, CTL_EOL);
  531         sysctl_createv(clog, 0, NULL, NULL,
  532                        CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
  533                        CTLTYPE_INT, "trans_deflev", NULL,
  534                        sysctl_fast_ipsec, 0, &ip4_esp_trans_deflev, 0,
  535                        CTL_NET, PF_INET, IPPROTO_ESP,
  536                        IPSECCTL_DEF_ESP_TRANSLEV, CTL_EOL);
  537         sysctl_createv(clog, 0, NULL, NULL,
  538                        CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
  539                        CTLTYPE_INT, "net_deflev", NULL,
  540                        sysctl_fast_ipsec, 0, &ip4_esp_net_deflev, 0,
  541                        CTL_NET, PF_INET, IPPROTO_ESP,
  542                        IPSECCTL_DEF_ESP_NETLEV, CTL_EOL);
  543         sysctl_createv(clog, 0, NULL, NULL,
  544                        CTLFLAG_PERMANENT|CTLFLAG_READONLY,
  545                        CTLTYPE_STRUCT, "esp_stats", NULL,
  546                        NULL, 0, &espstat, sizeof(espstat),
  547                        CTL_NET, PF_INET, IPPROTO_ESP,
  548                        CTL_CREATE, CTL_EOL);
  549 
  550         /* create net.inet.ah subtree under IPPROTO_AH */
  551         sysctl_createv(clog, 0, NULL, NULL,
  552                        CTLFLAG_PERMANENT,
  553                        CTLTYPE_NODE, "ah", NULL,
  554                        NULL, 0, NULL, 0,
  555                        CTL_NET, PF_INET, IPPROTO_AH, CTL_EOL);
  556         sysctl_createv(clog, 0, NULL, NULL,
  557                        CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
  558                        CTLTYPE_INT, "cleartos", NULL,
  559                        NULL, 0, &/*ip4_*/ah_cleartos, 0,
  560                        CTL_NET, PF_INET, IPPROTO_AH,
  561                        IPSECCTL_AH_CLEARTOS, CTL_EOL);
  562         sysctl_createv(clog, 0, NULL, NULL,
  563                        CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
  564                        CTLTYPE_INT, "offsetmask", NULL,
  565                        NULL, 0, &ip4_ah_offsetmask, 0,
  566                        CTL_NET, PF_INET, IPPROTO_AH,
  567                        IPSECCTL_AH_OFFSETMASK, CTL_EOL);
  568         sysctl_createv(clog, 0, NULL, NULL,
  569                        CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
  570                        CTLTYPE_INT, "trans_deflev", NULL,
  571                        sysctl_fast_ipsec, 0, &ip4_ah_trans_deflev, 0,
  572                        CTL_NET, PF_INET, IPPROTO_AH,
  573                        IPSECCTL_DEF_AH_TRANSLEV, CTL_EOL);
  574         sysctl_createv(clog, 0, NULL, NULL,
  575                        CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
  576                        CTLTYPE_INT, "net_deflev", NULL,
  577                        sysctl_fast_ipsec, 0, &ip4_ah_net_deflev, 0,
  578                        CTL_NET, PF_INET, IPPROTO_AH,
  579                        IPSECCTL_DEF_AH_NETLEV, CTL_EOL);
  580         sysctl_createv(clog, 0, NULL, NULL,
  581                        CTLFLAG_PERMANENT|CTLFLAG_READONLY,
  582                        CTLTYPE_STRUCT, "ah_stats", NULL,
  583                        NULL, 0, &ahstat, sizeof(ahstat),
  584                        CTL_NET, PF_INET, IPPROTO_AH,
  585                        CTL_CREATE, CTL_EOL);
  586 
  587         /* create net.inet.ipcomp */
  588         sysctl_createv(clog, 0, NULL, NULL,
  589                        CTLFLAG_PERMANENT,
  590                        CTLTYPE_NODE, "ipcomp", NULL,
  591                        NULL, 0, NULL, 0,
  592                        CTL_NET, PF_INET, IPPROTO_IPCOMP, CTL_EOL);
  593         sysctl_createv(clog, 0, NULL, NULL,
  594                        CTLFLAG_PERMANENT|CTLFLAG_READONLY,
  595                        CTLTYPE_STRUCT, "ipcomp_stats", NULL,
  596                        NULL, 0, &ipcompstat, sizeof(ipcompstat),
  597                        CTL_NET, PF_INET, IPPROTO_IPCOMP,
  598                        CTL_CREATE, CTL_EOL);
  599 
  600         /* create net.inet.ipsec subtree under dynamic oid */
  601         sysctl_createv(clog, 0, NULL, &_ipsec,
  602                        CTLFLAG_PERMANENT,
  603                        CTLTYPE_NODE, "ipsec", NULL,
  604                        NULL, 0, NULL, 0,
  605                        CTL_NET, PF_INET, CTL_CREATE, CTL_EOL);
  606         ipproto_ipsec = (_ipsec != NULL) ? _ipsec->sysctl_num : 0;
  607 
  608         sysctl_createv(clog, 0, NULL, NULL,
  609                        CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
  610                        CTLTYPE_INT, "def_policy", NULL,
  611                        sysctl_fast_ipsec, 0, &ip4_def_policy.policy, 0,
  612                        CTL_NET, PF_INET, ipproto_ipsec,
  613                        IPSECCTL_DEF_POLICY, CTL_EOL);
  614         sysctl_createv(clog, 0, NULL, NULL,
  615                        CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
  616                        CTLTYPE_INT, "esp_trans_deflev", NULL,
  617                        sysctl_fast_ipsec, 0, &ip4_esp_trans_deflev, 0,
  618                        CTL_NET, PF_INET, ipproto_ipsec,
  619                        IPSECCTL_DEF_ESP_TRANSLEV, CTL_EOL);
  620         sysctl_createv(clog, 0, NULL, NULL,
  621                        CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
  622                        CTLTYPE_INT, "esp_net_deflev", NULL,
  623                        sysctl_fast_ipsec, 0, &ip4_esp_net_deflev, 0,
  624                        CTL_NET, PF_INET, ipproto_ipsec,
  625                        IPSECCTL_DEF_ESP_NETLEV, CTL_EOL);
  626         sysctl_createv(clog, 0, NULL, NULL,
  627                        CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
  628                        CTLTYPE_INT, "ah_trans_deflev", NULL,
  629                        sysctl_fast_ipsec, 0, &ip4_ah_trans_deflev, 0,
  630                        CTL_NET, PF_INET, ipproto_ipsec,
  631                        IPSECCTL_DEF_AH_TRANSLEV, CTL_EOL);
  632         sysctl_createv(clog, 0, NULL, NULL,
  633                        CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
  634                        CTLTYPE_INT, "ah_net_deflev", NULL,
  635                        sysctl_fast_ipsec, 0, &ip4_ah_net_deflev, 0,
  636                        CTL_NET, PF_INET, ipproto_ipsec,
  637                        IPSECCTL_DEF_AH_NETLEV, CTL_EOL);
  638         sysctl_createv(clog, 0, NULL, NULL,
  639                        CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
  640                        CTLTYPE_INT, "ah_cleartos", NULL,
  641                        NULL, 0, &/*ip4_*/ah_cleartos, 0,
  642                        CTL_NET, PF_INET, ipproto_ipsec,
  643                        IPSECCTL_AH_CLEARTOS, CTL_EOL);
  644         sysctl_createv(clog, 0, NULL, NULL,
  645                        CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
  646                        CTLTYPE_INT, "ah_offsetmask", NULL,
  647                        NULL, 0, &ip4_ah_offsetmask, 0,
  648                        CTL_NET, PF_INET, ipproto_ipsec,
  649                        IPSECCTL_AH_OFFSETMASK, CTL_EOL);
  650         sysctl_createv(clog, 0, NULL, NULL,
  651                        CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
  652                        CTLTYPE_INT, "dfbit", NULL,
  653                        NULL, 0, &ip4_ipsec_dfbit, 0,
  654                        CTL_NET, PF_INET, ipproto_ipsec,
  655                        IPSECCTL_DFBIT, CTL_EOL);
  656         sysctl_createv(clog, 0, NULL, NULL,
  657                        CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
  658                        CTLTYPE_INT, "ecn", NULL,
  659                        NULL, 0, &ip4_ipsec_ecn, 0,
  660                        CTL_NET, PF_INET, ipproto_ipsec,
  661                        IPSECCTL_ECN, CTL_EOL);
  662         sysctl_createv(clog, 0, NULL, NULL,
  663                        CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
  664                        CTLTYPE_INT, "debug", NULL,
  665                        NULL, 0, &ipsec_debug, 0,
  666                        CTL_NET, PF_INET, ipproto_ipsec,
  667                        IPSECCTL_DEBUG, CTL_EOL);
  668         sysctl_createv(clog, 0, NULL, NULL,
  669                        CTLFLAG_PERMANENT|CTLFLAG_READONLY,
  670                        CTLTYPE_STRUCT, "ipsecstats", NULL,
  671                        NULL, 0, &ipsecstat, sizeof(ipsecstat),
  672                        CTL_NET, PF_INET, ipproto_ipsec,
  673                        CTL_CREATE, CTL_EOL);
  674 #ifdef IPSEC_DEBUG
  675         sysctl_createv(clog, 0, NULL, NULL,
  676                        CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
  677                        CTLTYPE_INT, "test_replay",
  678                        SYSCTL_DESCR("Emulate replay attack"),
  679                        sysctl_fast_ipsec_test, 0, &ipsec_replay, 0,
  680                        CTL_NET, PF_INET, ipproto_ipsec,
  681                        CTL_CREATE, CTL_EOL);
  682         sysctl_createv(clog, 0, NULL, NULL,
  683                        CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
  684                        CTLTYPE_INT, "test_integrity",
  685                        SYSCTL_DESCR("Emulate man-in-the-middle attack"),
  686                        sysctl_fast_ipsec_test, 0, &ipsec_integrity, 0,
  687                        CTL_NET, PF_INET, ipproto_ipsec,
  688                        CTL_CREATE, CTL_EOL);
  689 #endif
  690 }
  691 
  692 #ifdef INET6
  693 SYSCTL_SETUP(sysctl_net_inet6_fast_ipsec6_setup,
  694              "sysctl net.inet6.ipsec6 subtree setup")
  695 {
  696 
  697         sysctl_createv(clog, 0, NULL, NULL,
  698                        CTLFLAG_PERMANENT,
  699                        CTLTYPE_NODE, "net", NULL,
  700                        NULL, 0, NULL, 0,
  701                        CTL_NET, CTL_EOL);
  702         sysctl_createv(clog, 0, NULL, NULL,
  703                        CTLFLAG_PERMANENT,
  704                        CTLTYPE_NODE, "inet6", NULL,
  705                        NULL, 0, NULL, 0,
  706                        CTL_NET, PF_INET6, CTL_EOL);
  707         sysctl_createv(clog, 0, NULL, NULL,
  708                        CTLFLAG_PERMANENT,
  709                        CTLTYPE_NODE, "ipsec6",
  710                        SYSCTL_DESCR("IPv6 related IPSec settings"),
  711                        NULL, 0, NULL, 0,
  712                        CTL_NET, PF_INET6, IPPROTO_AH, CTL_EOL);
  713 
  714         sysctl_createv(clog, 0, NULL, NULL,
  715                        CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
  716                        CTLTYPE_STRUCT, "stats",
  717                        SYSCTL_DESCR("IPSec statistics and counters"),
  718                        NULL, 0, &ipsec6stat, sizeof(ipsec6stat),
  719                        CTL_NET, PF_INET6, IPPROTO_AH,
  720                        IPSECCTL_STATS, CTL_EOL);
  721         sysctl_createv(clog, 0, NULL, NULL,
  722                        CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
  723                        CTLTYPE_INT, "def_policy",
  724                        SYSCTL_DESCR("Default action for non-IPSec packets"),
  725                        sysctl_fast_ipsec, 0, &ip6_def_policy, 0,
  726                        CTL_NET, PF_INET6, IPPROTO_AH,
  727                        IPSECCTL_DEF_POLICY, CTL_EOL);
  728         sysctl_createv(clog, 0, NULL, NULL,
  729                        CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
  730                        CTLTYPE_INT, "esp_trans_deflev",
  731                        SYSCTL_DESCR("Default required security level for "
  732                                     "transport mode traffic"),
  733                        sysctl_fast_ipsec, 0, &ip6_esp_trans_deflev, 0,
  734                        CTL_NET, PF_INET6, IPPROTO_AH,
  735                        IPSECCTL_DEF_ESP_TRANSLEV, CTL_EOL);
  736         sysctl_createv(clog, 0, NULL, NULL,
  737                        CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
  738                        CTLTYPE_INT, "esp_net_deflev",
  739                        SYSCTL_DESCR("Default required security level for "
  740                                     "tunneled traffic"),
  741                        sysctl_fast_ipsec, 0, &ip6_esp_net_deflev, 0,
  742                        CTL_NET, PF_INET6, IPPROTO_AH,
  743                        IPSECCTL_DEF_ESP_NETLEV, CTL_EOL);
  744         sysctl_createv(clog, 0, NULL, NULL,
  745                        CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
  746                        CTLTYPE_INT, "ah_trans_deflev",
  747                        SYSCTL_DESCR("Default required security level for "
  748                                     "transport mode headers"),
  749                        sysctl_fast_ipsec, 0, &ip6_ah_trans_deflev, 0,
  750                        CTL_NET, PF_INET6, IPPROTO_AH,
  751                        IPSECCTL_DEF_AH_TRANSLEV, CTL_EOL);
  752         sysctl_createv(clog, 0, NULL, NULL,
  753                        CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
  754                        CTLTYPE_INT, "ah_net_deflev",
  755                        SYSCTL_DESCR("Default required security level for "
  756                                     "tunneled headers"),
  757                        sysctl_fast_ipsec, 0, &ip6_ah_net_deflev, 0,
  758                        CTL_NET, PF_INET6, IPPROTO_AH,
  759                        IPSECCTL_DEF_AH_NETLEV, CTL_EOL);
  760         sysctl_createv(clog, 0, NULL, NULL,
  761                        CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
  762                        CTLTYPE_INT, "ecn",
  763                        SYSCTL_DESCR("Behavior of ECN for tunneled traffic"),
  764                        NULL, 0, &ip6_ipsec_ecn, 0,
  765                        CTL_NET, PF_INET6, IPPROTO_AH,
  766                        IPSECCTL_ECN, CTL_EOL);
  767         sysctl_createv(clog, 0, NULL, NULL,
  768                        CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
  769                        CTLTYPE_INT, "debug",
  770                        SYSCTL_DESCR("Enable IPSec debugging output"),
  771                        NULL, 0, &ipsec_debug, 0,
  772                        CTL_NET, PF_INET6, IPPROTO_AH,
  773                        IPSECCTL_DEBUG, CTL_EOL);
  774 
  775         /*
  776          * "aliases" for the ipsec6 subtree
  777          */
  778         sysctl_createv(clog, 0, NULL, NULL,
  779                        CTLFLAG_PERMANENT|CTLFLAG_ALIAS,
  780                        CTLTYPE_NODE, "esp6", NULL,
  781                        NULL, IPPROTO_AH, NULL, 0,
  782                        CTL_NET, PF_INET6, IPPROTO_ESP, CTL_EOL);
  783         sysctl_createv(clog, 0, NULL, NULL,
  784                        CTLFLAG_PERMANENT|CTLFLAG_ALIAS,
  785                        CTLTYPE_NODE, "ipcomp6", NULL,
  786                        NULL, IPPROTO_AH, NULL, 0,
  787                        CTL_NET, PF_INET6, IPPROTO_IPCOMP, CTL_EOL);
  788         sysctl_createv(clog, 0, NULL, NULL,
  789                        CTLFLAG_PERMANENT|CTLFLAG_ALIAS,
  790                        CTLTYPE_NODE, "ah6", NULL,
  791                        NULL, IPPROTO_AH, NULL, 0,
  792                        CTL_NET, PF_INET6, CTL_CREATE, CTL_EOL);
  793 }
  794 #endif /* INET6 */
Cache object: fe038b3ea2fc792e12082821b992b997
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FreeBSD/Linux Kernel Cross Reference sys/netipsec/ipsec_netbsd.c

FreeBSD/Linux Kernel Cross Reference
sys/netipsec/ipsec_netbsd.c
