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Annotation of src/sys/netinet/raw_ip.c, Revision 1.161.2.1

1.161.2.1! bouyer      1: /*     $NetBSD: raw_ip.c,v 1.164 2017/04/20 08:46:07 ozaki-r Exp $     */
1.43      itojun      2:
                      3: /*
                      4:  * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
                      5:  * All rights reserved.
1.61      itojun      6:  *
1.43      itojun      7:  * Redistribution and use in source and binary forms, with or without
                      8:  * modification, are permitted provided that the following conditions
                      9:  * are met:
                     10:  * 1. Redistributions of source code must retain the above copyright
                     11:  *    notice, this list of conditions and the following disclaimer.
                     12:  * 2. Redistributions in binary form must reproduce the above copyright
                     13:  *    notice, this list of conditions and the following disclaimer in the
                     14:  *    documentation and/or other materials provided with the distribution.
                     15:  * 3. Neither the name of the project nor the names of its contributors
                     16:  *    may be used to endorse or promote products derived from this software
                     17:  *    without specific prior written permission.
1.61      itojun     18:  *
1.43      itojun     19:  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
                     20:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     21:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     22:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
                     23:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     24:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     25:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     26:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     27:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     28:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     29:  * SUCH DAMAGE.
                     30:  */
1.14      cgd        31:
1.1       cgd        32: /*
1.13      mycroft    33:  * Copyright (c) 1982, 1986, 1988, 1993
                     34:  *     The Regents of the University of California.  All rights reserved.
1.1       cgd        35:  *
                     36:  * Redistribution and use in source and binary forms, with or without
                     37:  * modification, are permitted provided that the following conditions
                     38:  * are met:
                     39:  * 1. Redistributions of source code must retain the above copyright
                     40:  *    notice, this list of conditions and the following disclaimer.
                     41:  * 2. Redistributions in binary form must reproduce the above copyright
                     42:  *    notice, this list of conditions and the following disclaimer in the
                     43:  *    documentation and/or other materials provided with the distribution.
1.71      agc        44:  * 3. Neither the name of the University nor the names of its contributors
1.1       cgd        45:  *    may be used to endorse or promote products derived from this software
                     46:  *    without specific prior written permission.
                     47:  *
                     48:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
                     49:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     50:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     51:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
                     52:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     53:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     54:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     55:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     56:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     57:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     58:  * SUCH DAMAGE.
                     59:  *
1.39      thorpej    60:  *     @(#)raw_ip.c    8.7 (Berkeley) 5/15/95
1.1       cgd        61:  */
1.59      lukem      62:
1.121     rmind      63: /*
                     64:  * Raw interface to IP protocol.
                     65:  */
                     66:
1.59      lukem      67: #include <sys/cdefs.h>
1.161.2.1! bouyer     68: __KERNEL_RCSID(0, "$NetBSD: raw_ip.c,v 1.164 2017/04/20 08:46:07 ozaki-r Exp $");
1.40      scottr     69:
1.153     pooka      70: #ifdef _KERNEL_OPT
1.78      jonathan   71: #include "opt_inet.h"
1.109     christos   72: #include "opt_compat_netbsd.h"
1.45      thorpej    73: #include "opt_ipsec.h"
1.40      scottr     74: #include "opt_mrouting.h"
1.161.2.1! bouyer     75: #include "opt_net_mpsafe.h"
1.153     pooka      76: #endif
1.1       cgd        77:
1.7       mycroft    78: #include <sys/param.h>
1.84      atatat     79: #include <sys/sysctl.h>
1.7       mycroft    80: #include <sys/mbuf.h>
                     81: #include <sys/socket.h>
                     82: #include <sys/protosw.h>
                     83: #include <sys/socketvar.h>
                     84: #include <sys/errno.h>
1.13      mycroft    85: #include <sys/systm.h>
1.26      mycroft    86: #include <sys/proc.h>
1.89      elad       87: #include <sys/kauth.h>
1.1       cgd        88:
1.7       mycroft    89: #include <net/if.h>
1.1       cgd        90:
1.7       mycroft    91: #include <netinet/in.h>
                     92: #include <netinet/in_systm.h>
                     93: #include <netinet/ip.h>
                     94: #include <netinet/ip_var.h>
1.105     thorpej    95: #include <netinet/ip_private.h>
1.13      mycroft    96: #include <netinet/ip_mroute.h>
1.44      darrenr    97: #include <netinet/ip_icmp.h>
1.7       mycroft    98: #include <netinet/in_pcb.h>
1.87      yamt       99: #include <netinet/in_proto.h>
1.24      christos  100: #include <netinet/in_var.h>
                    101:
1.116     christos  102: #ifdef IPSEC
1.72      jonathan  103: #include <netipsec/ipsec.h>
1.106     thorpej   104: #include <netipsec/ipsec_var.h>
                    105: #include <netipsec/ipsec_private.h>
1.116     christos  106: #endif /* IPSEC */
1.72      jonathan  107:
1.109     christos  108: #ifdef COMPAT_50
                    109: #include <compat/sys/socket.h>
                    110: #endif
                    111:
1.20      mycroft   112: struct inpcbtable rawcbtable;
1.30      pk        113:
1.82      perry     114: int     rip_pcbnotify(struct inpcbtable *, struct in_addr,
                    115:     struct in_addr, int, int, void (*)(struct inpcb *, int));
1.149     rtr       116: static int      rip_connect_pcb(struct inpcb *, struct sockaddr_in *);
1.139     rtr       117: static void     rip_disconnect1(struct inpcb *);
1.13      mycroft   118:
1.110     pooka     119: static void sysctl_net_inet_raw_setup(struct sysctllog **);
                    120:
1.13      mycroft   121: /*
                    122:  * Nominal space allocated to a raw ip socket.
                    123:  */
                    124: #define        RIPSNDQ         8192
                    125: #define        RIPRCVQ         8192
1.1       cgd       126:
1.121     rmind     127: static u_long          rip_sendspace = RIPSNDQ;
                    128: static u_long          rip_recvspace = RIPRCVQ;
                    129:
1.1       cgd       130: /*
                    131:  * Raw interface to IP protocol.
                    132:  */
1.13      mycroft   133:
                    134: /*
                    135:  * Initialize raw connection block q.
                    136:  */
                    137: void
1.83      perry     138: rip_init(void)
1.13      mycroft   139: {
                    140:
1.110     pooka     141:        sysctl_net_inet_raw_setup(NULL);
1.33      mycroft   142:        in_pcbinit(&rawcbtable, 1, 1);
1.13      mycroft   143: }
                    144:
1.100     dyoung    145: static void
                    146: rip_sbappendaddr(struct inpcb *last, struct ip *ip, const struct sockaddr *sa,
                    147:     int hlen, struct mbuf *opts, struct mbuf *n)
                    148: {
                    149:        if (last->inp_flags & INP_NOHEADER)
                    150:                m_adj(n, hlen);
1.109     christos  151:        if (last->inp_flags & INP_CONTROLOPTS
                    152: #ifdef SO_OTIMESTAMP
                    153:            || last->inp_socket->so_options & SO_OTIMESTAMP
                    154: #endif
                    155:            || last->inp_socket->so_options & SO_TIMESTAMP)
1.100     dyoung    156:                ip_savecontrol(last, &opts, ip, n);
                    157:        if (sbappendaddr(&last->inp_socket->so_rcv, sa, n, opts) == 0) {
                    158:                /* should notify about lost packet */
                    159:                m_freem(n);
                    160:                if (opts)
                    161:                        m_freem(opts);
                    162:        } else
                    163:                sorwakeup(last->inp_socket);
                    164: }
                    165:
1.1       cgd       166: /*
                    167:  * Setup generic address and protocol structures
                    168:  * for raw_input routine, then pass them along with
                    169:  * mbuf chain.
                    170:  */
1.9       mycroft   171: void
1.24      christos  172: rip_input(struct mbuf *m, ...)
1.1       cgd       173: {
1.100     dyoung    174:        int hlen, proto;
1.53      augustss  175:        struct ip *ip = mtod(m, struct ip *);
1.75      itojun    176:        struct inpcb_hdr *inph;
1.53      augustss  177:        struct inpcb *inp;
1.97      dyoung    178:        struct inpcb *last = NULL;
                    179:        struct mbuf *n, *opts = NULL;
1.32      mycroft   180:        struct sockaddr_in ripsrc;
1.43      itojun    181:        va_list ap;
                    182:
                    183:        va_start(ap, m);
1.64      simonb    184:        (void)va_arg(ap, int);          /* ignore value, advance ap */
1.43      itojun    185:        proto = va_arg(ap, int);
                    186:        va_end(ap);
1.1       cgd       187:
1.97      dyoung    188:        sockaddr_in_init(&ripsrc, &ip->ip_src, 0);
1.42      thorpej   189:
                    190:        /*
                    191:         * XXX Compatibility: programs using raw IP expect ip_len
1.62      itojun    192:         * XXX to have the header length subtracted, and in host order.
                    193:         * XXX ip_off is also expected to be host order.
1.42      thorpej   194:         */
1.100     dyoung    195:        hlen = ip->ip_hl << 2;
                    196:        ip->ip_len = ntohs(ip->ip_len) - hlen;
1.62      itojun    197:        NTOHS(ip->ip_off);
1.32      mycroft   198:
1.117     christos  199:        TAILQ_FOREACH(inph, &rawcbtable.inpt_queue, inph_queue) {
1.75      itojun    200:                inp = (struct inpcb *)inph;
                    201:                if (inp->inp_af != AF_INET)
                    202:                        continue;
1.43      itojun    203:                if (inp->inp_ip.ip_p && inp->inp_ip.ip_p != proto)
1.13      mycroft   204:                        continue;
1.32      mycroft   205:                if (!in_nullhost(inp->inp_laddr) &&
                    206:                    !in_hosteq(inp->inp_laddr, ip->ip_dst))
1.13      mycroft   207:                        continue;
1.32      mycroft   208:                if (!in_nullhost(inp->inp_faddr) &&
                    209:                    !in_hosteq(inp->inp_faddr, ip->ip_src))
1.13      mycroft   210:                        continue;
1.97      dyoung    211:                if (last == NULL)
                    212:                        ;
1.116     christos  213: #if defined(IPSEC)
1.97      dyoung    214:                /* check AH/ESP integrity. */
1.124     christos  215:                else if (ipsec_used &&
1.161.2.1! bouyer    216:                    ipsec4_in_reject(m, last)) {
1.106     thorpej   217:                        IPSEC_STATINC(IPSEC_STAT_IN_POLVIO);
1.97      dyoung    218:                        /* do not inject data to pcb */
                    219:                }
                    220: #endif /*IPSEC*/
1.99      dyoung    221:                else if ((n = m_copypacket(m, M_DONTWAIT)) != NULL) {
1.100     dyoung    222:                        rip_sbappendaddr(last, ip, sintosa(&ripsrc), hlen, opts,
                    223:                            n);
1.97      dyoung    224:                        opts = NULL;
1.13      mycroft   225:                }
1.36      thorpej   226:                last = inp;
1.13      mycroft   227:        }
1.116     christos  228: #if defined(IPSEC)
1.55      itojun    229:        /* check AH/ESP integrity. */
1.124     christos  230:        if (ipsec_used && last != NULL
1.161.2.1! bouyer    231:            && ipsec4_in_reject(m, last)) {
1.55      itojun    232:                m_freem(m);
1.106     thorpej   233:                IPSEC_STATINC(IPSEC_STAT_IN_POLVIO);
1.105     thorpej   234:                IP_STATDEC(IP_STAT_DELIVERED);
1.55      itojun    235:                /* do not inject data to pcb */
                    236:        } else
                    237: #endif /*IPSEC*/
1.100     dyoung    238:        if (last != NULL)
                    239:                rip_sbappendaddr(last, ip, sintosa(&ripsrc), hlen, opts, m);
1.156     riastrad  240:        else if (inetsw[ip_protox[ip->ip_p]].pr_input == rip_input) {
1.105     thorpej   241:                uint64_t *ips;
                    242:
1.97      dyoung    243:                icmp_error(m, ICMP_UNREACH, ICMP_UNREACH_PROTOCOL,
                    244:                    0, 0);
1.105     thorpej   245:                ips = IP_STAT_GETREF();
                    246:                ips[IP_STAT_NOPROTO]++;
                    247:                ips[IP_STAT_DELIVERED]--;
                    248:                IP_STAT_PUTREF();
1.97      dyoung    249:        } else
                    250:                m_freem(m);
1.43      itojun    251:        return;
1.60      itojun    252: }
                    253:
                    254: int
1.83      perry     255: rip_pcbnotify(struct inpcbtable *table,
                    256:     struct in_addr faddr, struct in_addr laddr, int proto, int errno,
                    257:     void (*notify)(struct inpcb *, int))
1.60      itojun    258: {
1.117     christos  259:        struct inpcb_hdr *inph, *ninph;
1.60      itojun    260:        int nmatch;
                    261:
                    262:        nmatch = 0;
1.117     christos  263:        TAILQ_FOREACH_SAFE(inph, &table->inpt_queue, inph_queue, ninph) {
                    264:                struct inpcb *inp = (struct inpcb *)inph;
1.75      itojun    265:                if (inp->inp_af != AF_INET)
                    266:                        continue;
1.60      itojun    267:                if (inp->inp_ip.ip_p && inp->inp_ip.ip_p != proto)
                    268:                        continue;
                    269:                if (in_hosteq(inp->inp_faddr, faddr) &&
                    270:                    in_hosteq(inp->inp_laddr, laddr)) {
                    271:                        (*notify)(inp, errno);
                    272:                        nmatch++;
                    273:                }
                    274:        }
                    275:
                    276:        return nmatch;
                    277: }
                    278:
                    279: void *
1.95      dyoung    280: rip_ctlinput(int cmd, const struct sockaddr *sa, void *v)
1.60      itojun    281: {
                    282:        struct ip *ip = v;
1.82      perry     283:        void (*notify)(struct inpcb *, int) = in_rtchange;
1.60      itojun    284:        int errno;
                    285:
                    286:        if (sa->sa_family != AF_INET ||
                    287:            sa->sa_len != sizeof(struct sockaddr_in))
                    288:                return NULL;
                    289:        if ((unsigned)cmd >= PRC_NCMDS)
                    290:                return NULL;
                    291:        errno = inetctlerrmap[cmd];
                    292:        if (PRC_IS_REDIRECT(cmd))
                    293:                notify = in_rtchange, ip = 0;
                    294:        else if (cmd == PRC_HOSTDEAD)
                    295:                ip = 0;
                    296:        else if (errno == 0)
                    297:                return NULL;
                    298:        if (ip) {
1.95      dyoung    299:                rip_pcbnotify(&rawcbtable, satocsin(sa)->sin_addr,
1.60      itojun    300:                    ip->ip_src, ip->ip_p, errno, notify);
                    301:
                    302:                /* XXX mapped address case */
                    303:        } else
1.95      dyoung    304:                in_pcbnotifyall(&rawcbtable, satocsin(sa)->sin_addr, errno,
1.60      itojun    305:                    notify);
                    306:        return NULL;
1.1       cgd       307: }
                    308:
                    309: /*
                    310:  * Generate IP header and pass packet to ip_output.
                    311:  * Tack on options user may have setup with control call.
                    312:  */
1.9       mycroft   313: int
1.154     riastrad  314: rip_output(struct mbuf *m, struct inpcb *inp)
1.24      christos  315: {
1.53      augustss  316:        struct ip *ip;
1.10      mycroft   317:        struct mbuf *opts;
1.24      christos  318:        int flags;
                    319:
1.27      mycroft   320:        flags =
1.37      matt      321:            (inp->inp_socket->so_options & SO_DONTROUTE) | IP_ALLOWBROADCAST
                    322:            | IP_RETURNMTU;
1.1       cgd       323:
                    324:        /*
                    325:         * If the user handed us a complete IP packet, use it.
                    326:         * Otherwise, allocate an mbuf for a header and fill it in.
                    327:         */
1.13      mycroft   328:        if ((inp->inp_flags & INP_HDRINCL) == 0) {
1.35      thorpej   329:                if ((m->m_pkthdr.len + sizeof(struct ip)) > IP_MAXPACKET) {
                    330:                        m_freem(m);
                    331:                        return (EMSGSIZE);
                    332:                }
1.68      itojun    333:                M_PREPEND(m, sizeof(struct ip), M_DONTWAIT);
                    334:                if (!m)
                    335:                        return (ENOBUFS);
1.1       cgd       336:                ip = mtod(m, struct ip *);
                    337:                ip->ip_tos = 0;
1.62      itojun    338:                ip->ip_off = htons(0);
1.13      mycroft   339:                ip->ip_p = inp->inp_ip.ip_p;
1.62      itojun    340:                ip->ip_len = htons(m->m_pkthdr.len);
1.13      mycroft   341:                ip->ip_src = inp->inp_laddr;
1.27      mycroft   342:                ip->ip_dst = inp->inp_faddr;
1.1       cgd       343:                ip->ip_ttl = MAXTTL;
1.13      mycroft   344:                opts = inp->inp_options;
                    345:        } else {
1.35      thorpej   346:                if (m->m_pkthdr.len > IP_MAXPACKET) {
                    347:                        m_freem(m);
                    348:                        return (EMSGSIZE);
                    349:                }
1.13      mycroft   350:                ip = mtod(m, struct ip *);
1.65      thorpej   351:
                    352:                /*
                    353:                 * If the mbuf is read-only, we need to allocate
                    354:                 * a new mbuf for the header, since we need to
                    355:                 * modify the header.
                    356:                 */
                    357:                if (M_READONLY(m)) {
                    358:                        int hlen = ip->ip_hl << 2;
                    359:
                    360:                        m = m_copyup(m, hlen, (max_linkhdr + 3) & ~3);
                    361:                        if (m == NULL)
                    362:                                return (ENOMEM);        /* XXX */
                    363:                        ip = mtod(m, struct ip *);
                    364:                }
                    365:
1.62      itojun    366:                /* XXX userland passes ip_len and ip_off in host order */
1.38      mycroft   367:                if (m->m_pkthdr.len != ip->ip_len) {
                    368:                        m_freem(m);
                    369:                        return (EINVAL);
                    370:                }
1.62      itojun    371:                HTONS(ip->ip_len);
                    372:                HTONS(ip->ip_off);
1.103     matt      373:                if (ip->ip_id != 0 || m->m_pkthdr.len < IP_MINFRAGSIZE)
                    374:                        flags |= IP_NOIPNEWID;
1.13      mycroft   375:                opts = NULL;
                    376:                /* XXX prevent ip_output from overwriting header fields */
                    377:                flags |= IP_RAWOUTPUT;
1.105     thorpej   378:                IP_STATINC(IP_STAT_RAWOUT);
1.1       cgd       379:        }
1.123     rmind     380:
                    381:        /*
                    382:         * IP output.  Note: if IP_RETURNMTU flag is set, the MTU size
                    383:         * will be stored in inp_errormtu.
                    384:         */
                    385:        return ip_output(m, opts, &inp->inp_route, flags, inp->inp_moptions,
1.161.2.1! bouyer    386:             inp);
1.1       cgd       387: }
                    388:
                    389: /*
                    390:  * Raw IP socket option processing.
                    391:  */
1.9       mycroft   392: int
1.108     plunky    393: rip_ctloutput(int op, struct socket *so, struct sockopt *sopt)
1.1       cgd       394: {
1.53      augustss  395:        struct inpcb *inp = sotoinpcb(so);
1.31      mycroft   396:        int error = 0;
1.108     plunky    397:        int optval;
1.1       cgd       398:
1.108     plunky    399:        if (sopt->sopt_level == SOL_SOCKET && sopt->sopt_name == SO_NOHEADER) {
1.100     dyoung    400:                if (op == PRCO_GETOPT) {
1.108     plunky    401:                        optval = (inp->inp_flags & INP_NOHEADER) ? 1 : 0;
                    402:                        error = sockopt_set(sopt, &optval, sizeof(optval));
                    403:                } else if (op == PRCO_SETOPT) {
                    404:                        error = sockopt_getint(sopt, &optval);
                    405:                        if (error)
                    406:                                goto out;
                    407:                        if (optval) {
                    408:                                inp->inp_flags &= ~INP_HDRINCL;
                    409:                                inp->inp_flags |= INP_NOHEADER;
                    410:                        } else
                    411:                                inp->inp_flags &= ~INP_NOHEADER;
                    412:                }
                    413:                goto out;
                    414:        } else if (sopt->sopt_level != IPPROTO_IP)
                    415:                return ip_ctloutput(op, so, sopt);
1.100     dyoung    416:
                    417:        switch (op) {
1.31      mycroft   418:
                    419:        case PRCO_SETOPT:
1.108     plunky    420:                switch (sopt->sopt_name) {
1.31      mycroft   421:                case IP_HDRINCL:
1.108     plunky    422:                        error = sockopt_getint(sopt, &optval);
                    423:                        if (error)
                    424:                                break;
                    425:                        if (optval)
1.100     dyoung    426:                                inp->inp_flags |= INP_HDRINCL;
                    427:                        else
                    428:                                inp->inp_flags &= ~INP_HDRINCL;
1.108     plunky    429:                        break;
1.31      mycroft   430:
                    431: #ifdef MROUTING
                    432:                case MRT_INIT:
                    433:                case MRT_DONE:
                    434:                case MRT_ADD_VIF:
                    435:                case MRT_DEL_VIF:
                    436:                case MRT_ADD_MFC:
                    437:                case MRT_DEL_MFC:
                    438:                case MRT_ASSERT:
1.81      manu      439:                case MRT_API_CONFIG:
                    440:                case MRT_ADD_BW_UPCALL:
                    441:                case MRT_DEL_BW_UPCALL:
1.108     plunky    442:                        error = ip_mrouter_set(so, sopt);
1.31      mycroft   443:                        break;
                    444: #endif
                    445:
                    446:                default:
1.108     plunky    447:                        error = ip_ctloutput(op, so, sopt);
1.31      mycroft   448:                        break;
1.13      mycroft   449:                }
                    450:                break;
1.1       cgd       451:
1.31      mycroft   452:        case PRCO_GETOPT:
1.108     plunky    453:                switch (sopt->sopt_name) {
1.31      mycroft   454:                case IP_HDRINCL:
1.108     plunky    455:                        optval = inp->inp_flags & INP_HDRINCL;
                    456:                        error = sockopt_set(sopt, &optval, sizeof(optval));
1.31      mycroft   457:                        break;
                    458:
1.6       hpeyerl   459: #ifdef MROUTING
1.31      mycroft   460:                case MRT_VERSION:
                    461:                case MRT_ASSERT:
1.81      manu      462:                case MRT_API_SUPPORT:
                    463:                case MRT_API_CONFIG:
1.108     plunky    464:                        error = ip_mrouter_get(so, sopt);
1.18      mycroft   465:                        break;
1.31      mycroft   466: #endif
                    467:
1.18      mycroft   468:                default:
1.108     plunky    469:                        error = ip_ctloutput(op, so, sopt);
1.18      mycroft   470:                        break;
                    471:                }
1.31      mycroft   472:                break;
1.1       cgd       473:        }
1.108     plunky    474:  out:
1.100     dyoung    475:        return error;
1.1       cgd       476: }
                    477:
1.27      mycroft   478: int
1.149     rtr       479: rip_connect_pcb(struct inpcb *inp, struct sockaddr_in *addr)
1.27      mycroft   480: {
                    481:
1.158     ozaki-r   482:        if (IFNET_READER_EMPTY())
1.27      mycroft   483:                return (EADDRNOTAVAIL);
1.115     joerg     484:        if (addr->sin_family != AF_INET)
1.27      mycroft   485:                return (EAFNOSUPPORT);
                    486:        inp->inp_faddr = addr->sin_addr;
                    487:        return (0);
                    488: }
                    489:
1.139     rtr       490: static void
                    491: rip_disconnect1(struct inpcb *inp)
1.27      mycroft   492: {
                    493:
1.32      mycroft   494:        inp->inp_faddr = zeroin_addr;
1.27      mycroft   495: }
                    496:
1.121     rmind     497: static int
                    498: rip_attach(struct socket *so, int proto)
                    499: {
                    500:        struct inpcb *inp;
                    501:        int error;
                    502:
                    503:        KASSERT(sotoinpcb(so) == NULL);
                    504:        sosetlock(so);
                    505:
                    506:        if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) {
                    507:                error = soreserve(so, rip_sendspace, rip_recvspace);
                    508:                if (error) {
                    509:                        return error;
                    510:                }
                    511:        }
                    512:
                    513:        error = in_pcballoc(so, &rawcbtable);
                    514:        if (error) {
                    515:                return error;
                    516:        }
                    517:        inp = sotoinpcb(so);
                    518:        inp->inp_ip.ip_p = proto;
                    519:        KASSERT(solocked(so));
                    520:
                    521:        return 0;
                    522: }
1.13      mycroft   523:
1.121     rmind     524: static void
                    525: rip_detach(struct socket *so)
1.1       cgd       526: {
1.53      augustss  527:        struct inpcb *inp;
1.121     rmind     528:
                    529:        KASSERT(solocked(so));
                    530:        inp = sotoinpcb(so);
                    531:        KASSERT(inp != NULL);
                    532:
1.13      mycroft   533: #ifdef MROUTING
1.6       hpeyerl   534:        extern struct socket *ip_mrouter;
1.121     rmind     535:        if (so == ip_mrouter) {
                    536:                ip_mrouter_done();
                    537:        }
1.6       hpeyerl   538: #endif
1.121     rmind     539:        in_pcbdetach(inp);
                    540: }
                    541:
1.125     rtr       542: static int
1.148     rtr       543: rip_accept(struct socket *so, struct sockaddr *nam)
1.133     rtr       544: {
                    545:        KASSERT(solocked(so));
                    546:
                    547:        panic("rip_accept");
1.136     rtr       548:
                    549:        return EOPNOTSUPP;
                    550: }
                    551:
                    552: static int
1.147     rtr       553: rip_bind(struct socket *so, struct sockaddr *nam, struct lwp *l)
1.136     rtr       554: {
                    555:        struct inpcb *inp = sotoinpcb(so);
1.147     rtr       556:        struct sockaddr_in *addr = (struct sockaddr_in *)nam;
1.136     rtr       557:        int error = 0;
1.159     ozaki-r   558:        int s, ss;
                    559:        struct ifaddr *ifa;
1.136     rtr       560:
                    561:        KASSERT(solocked(so));
                    562:        KASSERT(inp != NULL);
                    563:        KASSERT(nam != NULL);
                    564:
1.147     rtr       565:        if (addr->sin_len != sizeof(*addr))
                    566:                return EINVAL;
                    567:
1.136     rtr       568:        s = splsoftnet();
1.158     ozaki-r   569:        if (IFNET_READER_EMPTY()) {
1.136     rtr       570:                error = EADDRNOTAVAIL;
                    571:                goto release;
                    572:        }
                    573:        if (addr->sin_family != AF_INET) {
                    574:                error = EAFNOSUPPORT;
                    575:                goto release;
                    576:        }
1.159     ozaki-r   577:        ss = pserialize_read_enter();
                    578:        if ((ifa = ifa_ifwithaddr(sintosa(addr))) == NULL &&
1.151     roy       579:            !in_nullhost(addr->sin_addr))
                    580:        {
1.159     ozaki-r   581:                pserialize_read_exit(ss);
1.136     rtr       582:                error = EADDRNOTAVAIL;
                    583:                goto release;
                    584:        }
1.161     roy       585:         if (ifa && (ifatoia(ifa))->ia4_flags & IN6_IFF_DUPLICATED) {
1.159     ozaki-r   586:                pserialize_read_exit(ss);
1.151     roy       587:                error = EADDRNOTAVAIL;
                    588:                goto release;
                    589:        }
1.159     ozaki-r   590:        pserialize_read_exit(ss);
1.151     roy       591:
1.136     rtr       592:        inp->inp_laddr = addr->sin_addr;
                    593:
                    594: release:
                    595:        splx(s);
                    596:        return error;
                    597: }
                    598:
                    599: static int
1.142     rtr       600: rip_listen(struct socket *so, struct lwp *l)
1.136     rtr       601: {
                    602:        KASSERT(solocked(so));
                    603:
1.133     rtr       604:        return EOPNOTSUPP;
                    605: }
                    606:
                    607: static int
1.152     rtr       608: rip_connect(struct socket *so, struct sockaddr *nam, struct lwp *l)
1.137     rtr       609: {
                    610:        struct inpcb *inp = sotoinpcb(so);
                    611:        int error = 0;
                    612:        int s;
                    613:
                    614:        KASSERT(solocked(so));
                    615:        KASSERT(inp != NULL);
                    616:        KASSERT(nam != NULL);
                    617:
                    618:        s = splsoftnet();
1.152     rtr       619:        error = rip_connect_pcb(inp, (struct sockaddr_in *)nam);
1.137     rtr       620:        if (! error)
                    621:                soisconnected(so);
1.140     rtr       622:        splx(s);
1.137     rtr       623:
                    624:        return error;
                    625: }
                    626:
1.139     rtr       627: static int
1.145     rtr       628: rip_connect2(struct socket *so, struct socket *so2)
                    629: {
                    630:        KASSERT(solocked(so));
                    631:
                    632:        return EOPNOTSUPP;
                    633: }
                    634:
                    635: static int
1.139     rtr       636: rip_disconnect(struct socket *so)
                    637: {
                    638:        struct inpcb *inp = sotoinpcb(so);
1.140     rtr       639:        int s;
1.139     rtr       640:
                    641:        KASSERT(solocked(so));
                    642:        KASSERT(inp != NULL);
                    643:
1.140     rtr       644:        s = splsoftnet();
1.139     rtr       645:        soisdisconnected(so);
                    646:        rip_disconnect1(inp);
1.140     rtr       647:        splx(s);
                    648:
1.139     rtr       649:        return 0;
                    650: }
                    651:
                    652: static int
                    653: rip_shutdown(struct socket *so)
                    654: {
1.140     rtr       655:        int s;
                    656:
1.139     rtr       657:        KASSERT(solocked(so));
                    658:
                    659:        /*
                    660:         * Mark the connection as being incapable of further input.
                    661:         */
1.140     rtr       662:        s = splsoftnet();
1.139     rtr       663:        socantsendmore(so);
1.140     rtr       664:        splx(s);
                    665:
1.139     rtr       666:        return 0;
                    667: }
                    668:
                    669: static int
                    670: rip_abort(struct socket *so)
                    671: {
                    672:        KASSERT(solocked(so));
                    673:
                    674:        panic("rip_abort");
                    675:
                    676:        return EOPNOTSUPP;
                    677: }
1.137     rtr       678:
                    679: static int
1.127     rtr       680: rip_ioctl(struct socket *so, u_long cmd, void *nam, struct ifnet *ifp)
1.125     rtr       681: {
1.127     rtr       682:        return in_control(so, cmd, nam, ifp);
1.125     rtr       683: }
                    684:
1.128     rtr       685: static int
                    686: rip_stat(struct socket *so, struct stat *ub)
                    687: {
1.131     rtr       688:        KASSERT(solocked(so));
                    689:
1.130     rtr       690:        /* stat: don't bother with a blocksize. */
                    691:        return 0;
1.128     rtr       692: }
                    693:
1.132     rtr       694: static int
1.148     rtr       695: rip_peeraddr(struct socket *so, struct sockaddr *nam)
1.132     rtr       696: {
1.140     rtr       697:        int s;
                    698:
1.134     rtr       699:        KASSERT(solocked(so));
1.132     rtr       700:        KASSERT(sotoinpcb(so) != NULL);
                    701:        KASSERT(nam != NULL);
                    702:
1.140     rtr       703:        s = splsoftnet();
1.148     rtr       704:        in_setpeeraddr(sotoinpcb(so), (struct sockaddr_in *)nam);
1.140     rtr       705:        splx(s);
                    706:
1.132     rtr       707:        return 0;
                    708: }
                    709:
                    710: static int
1.148     rtr       711: rip_sockaddr(struct socket *so, struct sockaddr *nam)
1.132     rtr       712: {
1.140     rtr       713:        int s;
                    714:
1.134     rtr       715:        KASSERT(solocked(so));
1.132     rtr       716:        KASSERT(sotoinpcb(so) != NULL);
                    717:        KASSERT(nam != NULL);
                    718:
1.140     rtr       719:        s = splsoftnet();
1.148     rtr       720:        in_setsockaddr(sotoinpcb(so), (struct sockaddr_in *)nam);
1.140     rtr       721:        splx(s);
                    722:
1.132     rtr       723:        return 0;
                    724: }
                    725:
1.135     rtr       726: static int
1.144     rtr       727: rip_rcvd(struct socket *so, int flags, struct lwp *l)
                    728: {
                    729:        KASSERT(solocked(so));
                    730:
                    731:        return EOPNOTSUPP;
                    732: }
                    733:
                    734: static int
1.135     rtr       735: rip_recvoob(struct socket *so, struct mbuf *m, int flags)
                    736: {
                    737:        KASSERT(solocked(so));
                    738:
                    739:        return EOPNOTSUPP;
                    740: }
                    741:
                    742: static int
1.152     rtr       743: rip_send(struct socket *so, struct mbuf *m, struct sockaddr *nam,
1.143     rtr       744:     struct mbuf *control, struct lwp *l)
                    745: {
                    746:        struct inpcb *inp = sotoinpcb(so);
                    747:        int error = 0;
                    748:        int s;
                    749:
                    750:        KASSERT(solocked(so));
                    751:        KASSERT(inp != NULL);
                    752:        KASSERT(m != NULL);
                    753:
                    754:        /*
                    755:         * Ship a packet out.  The appropriate raw output
                    756:         * routine handles any massaging necessary.
                    757:         */
                    758:        if (control && control->m_len) {
                    759:                m_freem(control);
                    760:                m_freem(m);
                    761:                return EINVAL;
                    762:        }
                    763:
                    764:        s = splsoftnet();
                    765:        if (nam) {
                    766:                if ((so->so_state & SS_ISCONNECTED) != 0) {
                    767:                        error = EISCONN;
                    768:                        goto die;
                    769:                }
1.152     rtr       770:                error = rip_connect_pcb(inp, (struct sockaddr_in *)nam);
1.143     rtr       771:                if (error) {
                    772:                die:
                    773:                        m_freem(m);
                    774:                        splx(s);
                    775:                        return error;
                    776:                }
                    777:        } else {
                    778:                if ((so->so_state & SS_ISCONNECTED) == 0) {
                    779:                        error = ENOTCONN;
                    780:                        goto die;
                    781:                }
                    782:        }
                    783:        error = rip_output(m, inp);
                    784:        if (nam)
                    785:                rip_disconnect1(inp);
                    786:
                    787:        splx(s);
                    788:        return error;
                    789: }
                    790:
                    791: static int
1.135     rtr       792: rip_sendoob(struct socket *so, struct mbuf *m, struct mbuf *control)
                    793: {
                    794:        KASSERT(solocked(so));
                    795:
                    796:        m_freem(m);
                    797:        m_freem(control);
                    798:
                    799:        return EOPNOTSUPP;
                    800: }
                    801:
1.145     rtr       802: static int
                    803: rip_purgeif(struct socket *so, struct ifnet *ifp)
                    804: {
                    805:        int s;
                    806:
                    807:        s = splsoftnet();
                    808:        mutex_enter(softnet_lock);
                    809:        in_pcbpurgeif0(&rawcbtable, ifp);
1.161.2.1! bouyer    810: #ifdef NET_MPSAFE
        !           811:        mutex_exit(softnet_lock);
        !           812: #endif
1.145     rtr       813:        in_purgeif(ifp);
1.161.2.1! bouyer    814: #ifdef NET_MPSAFE
        !           815:        mutex_enter(softnet_lock);
        !           816: #endif
1.145     rtr       817:        in_pcbpurgeif(&rawcbtable, ifp);
                    818:        mutex_exit(softnet_lock);
                    819:        splx(s);
                    820:
                    821:        return 0;
                    822: }
                    823:
1.122     rmind     824: PR_WRAP_USRREQS(rip)
                    825: #define        rip_attach      rip_attach_wrapper
                    826: #define        rip_detach      rip_detach_wrapper
1.133     rtr       827: #define        rip_accept      rip_accept_wrapper
1.136     rtr       828: #define        rip_bind        rip_bind_wrapper
                    829: #define        rip_listen      rip_listen_wrapper
1.137     rtr       830: #define        rip_connect     rip_connect_wrapper
1.145     rtr       831: #define        rip_connect2    rip_connect2_wrapper
1.139     rtr       832: #define        rip_disconnect  rip_disconnect_wrapper
                    833: #define        rip_shutdown    rip_shutdown_wrapper
                    834: #define        rip_abort       rip_abort_wrapper
1.125     rtr       835: #define        rip_ioctl       rip_ioctl_wrapper
1.128     rtr       836: #define        rip_stat        rip_stat_wrapper
1.132     rtr       837: #define        rip_peeraddr    rip_peeraddr_wrapper
                    838: #define        rip_sockaddr    rip_sockaddr_wrapper
1.144     rtr       839: #define        rip_rcvd        rip_rcvd_wrapper
1.135     rtr       840: #define        rip_recvoob     rip_recvoob_wrapper
1.143     rtr       841: #define        rip_send        rip_send_wrapper
1.135     rtr       842: #define        rip_sendoob     rip_sendoob_wrapper
1.145     rtr       843: #define        rip_purgeif     rip_purgeif_wrapper
1.120     rmind     844:
                    845: const struct pr_usrreqs rip_usrreqs = {
1.121     rmind     846:        .pr_attach      = rip_attach,
                    847:        .pr_detach      = rip_detach,
1.133     rtr       848:        .pr_accept      = rip_accept,
1.136     rtr       849:        .pr_bind        = rip_bind,
                    850:        .pr_listen      = rip_listen,
1.137     rtr       851:        .pr_connect     = rip_connect,
1.145     rtr       852:        .pr_connect2    = rip_connect2,
1.139     rtr       853:        .pr_disconnect  = rip_disconnect,
                    854:        .pr_shutdown    = rip_shutdown,
                    855:        .pr_abort       = rip_abort,
1.125     rtr       856:        .pr_ioctl       = rip_ioctl,
1.128     rtr       857:        .pr_stat        = rip_stat,
1.132     rtr       858:        .pr_peeraddr    = rip_peeraddr,
                    859:        .pr_sockaddr    = rip_sockaddr,
1.144     rtr       860:        .pr_rcvd        = rip_rcvd,
1.135     rtr       861:        .pr_recvoob     = rip_recvoob,
1.143     rtr       862:        .pr_send        = rip_send,
1.135     rtr       863:        .pr_sendoob     = rip_sendoob,
1.145     rtr       864:        .pr_purgeif     = rip_purgeif,
1.120     rmind     865: };
                    866:
1.110     pooka     867: static void
                    868: sysctl_net_inet_raw_setup(struct sysctllog **clog)
1.84      atatat    869: {
                    870:
                    871:        sysctl_createv(clog, 0, NULL, NULL,
                    872:                       CTLFLAG_PERMANENT,
                    873:                       CTLTYPE_NODE, "inet", NULL,
                    874:                       NULL, 0, NULL, 0,
                    875:                       CTL_NET, PF_INET, CTL_EOL);
                    876:        sysctl_createv(clog, 0, NULL, NULL,
                    877:                       CTLFLAG_PERMANENT,
                    878:                       CTLTYPE_NODE, "raw",
                    879:                       SYSCTL_DESCR("Raw IPv4 settings"),
                    880:                       NULL, 0, NULL, 0,
                    881:                       CTL_NET, PF_INET, IPPROTO_RAW, CTL_EOL);
                    882:
                    883:        sysctl_createv(clog, 0, NULL, NULL,
                    884:                       CTLFLAG_PERMANENT,
1.86      atatat    885:                       CTLTYPE_STRUCT, "pcblist",
1.84      atatat    886:                       SYSCTL_DESCR("Raw IPv4 control block list"),
                    887:                       sysctl_inpcblist, 0, &rawcbtable, 0,
                    888:                       CTL_NET, PF_INET, IPPROTO_RAW,
                    889:                       CTL_CREATE, CTL_EOL);
                    890: }

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