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Annotation of src/sys/netinet/raw_ip.c, Revision 1.114.2.3

1.114.2.2  tls         1: /*     $NetBSD$        */
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:
1.114.2.3! tls        63: /*
        !            64:  * Raw interface to IP protocol.
        !            65:  */
        !            66:
1.59      lukem      67: #include <sys/cdefs.h>
1.114.2.2  tls        68: __KERNEL_RCSID(0, "$NetBSD$");
1.40      scottr     69:
1.78      jonathan   70: #include "opt_inet.h"
1.109     christos   71: #include "opt_compat_netbsd.h"
1.45      thorpej    72: #include "opt_ipsec.h"
1.40      scottr     73: #include "opt_mrouting.h"
1.1       cgd        74:
1.7       mycroft    75: #include <sys/param.h>
1.84      atatat     76: #include <sys/sysctl.h>
1.7       mycroft    77: #include <sys/malloc.h>
                     78: #include <sys/mbuf.h>
                     79: #include <sys/socket.h>
                     80: #include <sys/protosw.h>
                     81: #include <sys/socketvar.h>
                     82: #include <sys/errno.h>
1.13      mycroft    83: #include <sys/systm.h>
1.26      mycroft    84: #include <sys/proc.h>
1.89      elad       85: #include <sys/kauth.h>
1.1       cgd        86:
1.7       mycroft    87: #include <net/if.h>
                     88: #include <net/route.h>
1.1       cgd        89:
1.7       mycroft    90: #include <netinet/in.h>
                     91: #include <netinet/in_systm.h>
                     92: #include <netinet/ip.h>
                     93: #include <netinet/ip_var.h>
1.105     thorpej    94: #include <netinet/ip_private.h>
1.13      mycroft    95: #include <netinet/ip_mroute.h>
1.44      darrenr    96: #include <netinet/ip_icmp.h>
1.7       mycroft    97: #include <netinet/in_pcb.h>
1.87      yamt       98: #include <netinet/in_proto.h>
1.24      christos   99: #include <netinet/in_var.h>
                    100:
1.114.2.2  tls       101: #ifdef IPSEC
1.72      jonathan  102: #include <netipsec/ipsec.h>
1.106     thorpej   103: #include <netipsec/ipsec_var.h>
                    104: #include <netipsec/ipsec_private.h>
1.114.2.2  tls       105: #endif /* IPSEC */
1.72      jonathan  106:
1.109     christos  107: #ifdef COMPAT_50
                    108: #include <compat/sys/socket.h>
                    109: #endif
                    110:
1.20      mycroft   111: struct inpcbtable rawcbtable;
1.30      pk        112:
1.82      perry     113: int     rip_pcbnotify(struct inpcbtable *, struct in_addr,
                    114:     struct in_addr, int, int, void (*)(struct inpcb *, int));
1.114.2.3! tls       115: int     rip_connect_pcb(struct inpcb *, struct mbuf *);
        !           116: static void     rip_disconnect1(struct inpcb *);
1.13      mycroft   117:
1.110     pooka     118: static void sysctl_net_inet_raw_setup(struct sysctllog **);
                    119:
1.13      mycroft   120: /*
                    121:  * Nominal space allocated to a raw ip socket.
                    122:  */
                    123: #define        RIPSNDQ         8192
                    124: #define        RIPRCVQ         8192
1.1       cgd       125:
1.114.2.3! tls       126: static u_long          rip_sendspace = RIPSNDQ;
        !           127: static u_long          rip_recvspace = RIPRCVQ;
        !           128:
1.1       cgd       129: /*
                    130:  * Raw interface to IP protocol.
                    131:  */
1.13      mycroft   132:
                    133: /*
                    134:  * Initialize raw connection block q.
                    135:  */
                    136: void
1.83      perry     137: rip_init(void)
1.13      mycroft   138: {
                    139:
1.110     pooka     140:        sysctl_net_inet_raw_setup(NULL);
1.33      mycroft   141:        in_pcbinit(&rawcbtable, 1, 1);
1.13      mycroft   142: }
                    143:
1.100     dyoung    144: static void
                    145: rip_sbappendaddr(struct inpcb *last, struct ip *ip, const struct sockaddr *sa,
                    146:     int hlen, struct mbuf *opts, struct mbuf *n)
                    147: {
                    148:        if (last->inp_flags & INP_NOHEADER)
                    149:                m_adj(n, hlen);
1.109     christos  150:        if (last->inp_flags & INP_CONTROLOPTS
                    151: #ifdef SO_OTIMESTAMP
                    152:            || last->inp_socket->so_options & SO_OTIMESTAMP
                    153: #endif
                    154:            || last->inp_socket->so_options & SO_TIMESTAMP)
1.100     dyoung    155:                ip_savecontrol(last, &opts, ip, n);
                    156:        if (sbappendaddr(&last->inp_socket->so_rcv, sa, n, opts) == 0) {
                    157:                /* should notify about lost packet */
                    158:                m_freem(n);
                    159:                if (opts)
                    160:                        m_freem(opts);
                    161:        } else
                    162:                sorwakeup(last->inp_socket);
                    163: }
                    164:
1.1       cgd       165: /*
                    166:  * Setup generic address and protocol structures
                    167:  * for raw_input routine, then pass them along with
                    168:  * mbuf chain.
                    169:  */
1.9       mycroft   170: void
1.24      christos  171: rip_input(struct mbuf *m, ...)
1.1       cgd       172: {
1.100     dyoung    173:        int hlen, proto;
1.53      augustss  174:        struct ip *ip = mtod(m, struct ip *);
1.75      itojun    175:        struct inpcb_hdr *inph;
1.53      augustss  176:        struct inpcb *inp;
1.97      dyoung    177:        struct inpcb *last = NULL;
                    178:        struct mbuf *n, *opts = NULL;
1.32      mycroft   179:        struct sockaddr_in ripsrc;
1.43      itojun    180:        va_list ap;
                    181:
                    182:        va_start(ap, m);
1.64      simonb    183:        (void)va_arg(ap, int);          /* ignore value, advance ap */
1.43      itojun    184:        proto = va_arg(ap, int);
                    185:        va_end(ap);
1.1       cgd       186:
1.97      dyoung    187:        sockaddr_in_init(&ripsrc, &ip->ip_src, 0);
1.42      thorpej   188:
                    189:        /*
                    190:         * XXX Compatibility: programs using raw IP expect ip_len
1.62      itojun    191:         * XXX to have the header length subtracted, and in host order.
                    192:         * XXX ip_off is also expected to be host order.
1.42      thorpej   193:         */
1.100     dyoung    194:        hlen = ip->ip_hl << 2;
                    195:        ip->ip_len = ntohs(ip->ip_len) - hlen;
1.62      itojun    196:        NTOHS(ip->ip_off);
1.32      mycroft   197:
1.114.2.3! tls       198:        TAILQ_FOREACH(inph, &rawcbtable.inpt_queue, inph_queue) {
1.75      itojun    199:                inp = (struct inpcb *)inph;
                    200:                if (inp->inp_af != AF_INET)
                    201:                        continue;
1.43      itojun    202:                if (inp->inp_ip.ip_p && inp->inp_ip.ip_p != proto)
1.13      mycroft   203:                        continue;
1.32      mycroft   204:                if (!in_nullhost(inp->inp_laddr) &&
                    205:                    !in_hosteq(inp->inp_laddr, ip->ip_dst))
1.13      mycroft   206:                        continue;
1.32      mycroft   207:                if (!in_nullhost(inp->inp_faddr) &&
                    208:                    !in_hosteq(inp->inp_faddr, ip->ip_src))
1.13      mycroft   209:                        continue;
1.97      dyoung    210:                if (last == NULL)
                    211:                        ;
1.114.2.2  tls       212: #if defined(IPSEC)
1.97      dyoung    213:                /* check AH/ESP integrity. */
1.114.2.3! tls       214:                else if (ipsec_used &&
        !           215:                    ipsec4_in_reject_so(m, last->inp_socket)) {
1.106     thorpej   216:                        IPSEC_STATINC(IPSEC_STAT_IN_POLVIO);
1.97      dyoung    217:                        /* do not inject data to pcb */
                    218:                }
                    219: #endif /*IPSEC*/
1.99      dyoung    220:                else if ((n = m_copypacket(m, M_DONTWAIT)) != NULL) {
1.100     dyoung    221:                        rip_sbappendaddr(last, ip, sintosa(&ripsrc), hlen, opts,
                    222:                            n);
1.97      dyoung    223:                        opts = NULL;
1.13      mycroft   224:                }
1.36      thorpej   225:                last = inp;
1.13      mycroft   226:        }
1.114.2.2  tls       227: #if defined(IPSEC)
1.55      itojun    228:        /* check AH/ESP integrity. */
1.114.2.3! tls       229:        if (ipsec_used && last != NULL
        !           230:            && ipsec4_in_reject_so(m, last->inp_socket)) {
1.55      itojun    231:                m_freem(m);
1.106     thorpej   232:                IPSEC_STATINC(IPSEC_STAT_IN_POLVIO);
1.105     thorpej   233:                IP_STATDEC(IP_STAT_DELIVERED);
1.55      itojun    234:                /* do not inject data to pcb */
                    235:        } else
                    236: #endif /*IPSEC*/
1.100     dyoung    237:        if (last != NULL)
                    238:                rip_sbappendaddr(last, ip, sintosa(&ripsrc), hlen, opts, m);
                    239:        else if (inetsw[ip_protox[ip->ip_p]].pr_input == rip_input) {
1.105     thorpej   240:                uint64_t *ips;
                    241:
1.97      dyoung    242:                icmp_error(m, ICMP_UNREACH, ICMP_UNREACH_PROTOCOL,
                    243:                    0, 0);
1.105     thorpej   244:                ips = IP_STAT_GETREF();
                    245:                ips[IP_STAT_NOPROTO]++;
                    246:                ips[IP_STAT_DELIVERED]--;
                    247:                IP_STAT_PUTREF();
1.97      dyoung    248:        } else
                    249:                m_freem(m);
1.43      itojun    250:        return;
1.60      itojun    251: }
                    252:
                    253: int
1.83      perry     254: rip_pcbnotify(struct inpcbtable *table,
                    255:     struct in_addr faddr, struct in_addr laddr, int proto, int errno,
                    256:     void (*notify)(struct inpcb *, int))
1.60      itojun    257: {
1.114.2.3! tls       258:        struct inpcb_hdr *inph, *ninph;
1.60      itojun    259:        int nmatch;
                    260:
                    261:        nmatch = 0;
1.114.2.3! tls       262:        TAILQ_FOREACH_SAFE(inph, &table->inpt_queue, inph_queue, ninph) {
        !           263:                struct inpcb *inp = (struct inpcb *)inph;
1.75      itojun    264:                if (inp->inp_af != AF_INET)
                    265:                        continue;
1.60      itojun    266:                if (inp->inp_ip.ip_p && inp->inp_ip.ip_p != proto)
                    267:                        continue;
                    268:                if (in_hosteq(inp->inp_faddr, faddr) &&
                    269:                    in_hosteq(inp->inp_laddr, laddr)) {
                    270:                        (*notify)(inp, errno);
                    271:                        nmatch++;
                    272:                }
                    273:        }
                    274:
                    275:        return nmatch;
                    276: }
                    277:
                    278: void *
1.95      dyoung    279: rip_ctlinput(int cmd, const struct sockaddr *sa, void *v)
1.60      itojun    280: {
                    281:        struct ip *ip = v;
1.82      perry     282:        void (*notify)(struct inpcb *, int) = in_rtchange;
1.60      itojun    283:        int errno;
                    284:
                    285:        if (sa->sa_family != AF_INET ||
                    286:            sa->sa_len != sizeof(struct sockaddr_in))
                    287:                return NULL;
                    288:        if ((unsigned)cmd >= PRC_NCMDS)
                    289:                return NULL;
                    290:        errno = inetctlerrmap[cmd];
                    291:        if (PRC_IS_REDIRECT(cmd))
                    292:                notify = in_rtchange, ip = 0;
                    293:        else if (cmd == PRC_HOSTDEAD)
                    294:                ip = 0;
                    295:        else if (errno == 0)
                    296:                return NULL;
                    297:        if (ip) {
1.95      dyoung    298:                rip_pcbnotify(&rawcbtable, satocsin(sa)->sin_addr,
1.60      itojun    299:                    ip->ip_src, ip->ip_p, errno, notify);
                    300:
                    301:                /* XXX mapped address case */
                    302:        } else
1.95      dyoung    303:                in_pcbnotifyall(&rawcbtable, satocsin(sa)->sin_addr, errno,
1.60      itojun    304:                    notify);
                    305:        return NULL;
1.1       cgd       306: }
                    307:
                    308: /*
                    309:  * Generate IP header and pass packet to ip_output.
                    310:  * Tack on options user may have setup with control call.
                    311:  */
1.9       mycroft   312: int
1.24      christos  313: rip_output(struct mbuf *m, ...)
                    314: {
1.53      augustss  315:        struct inpcb *inp;
                    316:        struct ip *ip;
1.10      mycroft   317:        struct mbuf *opts;
1.24      christos  318:        int flags;
                    319:        va_list ap;
                    320:
                    321:        va_start(ap, m);
1.27      mycroft   322:        inp = va_arg(ap, struct inpcb *);
1.24      christos  323:        va_end(ap);
                    324:
1.27      mycroft   325:        flags =
1.37      matt      326:            (inp->inp_socket->so_options & SO_DONTROUTE) | IP_ALLOWBROADCAST
                    327:            | IP_RETURNMTU;
1.1       cgd       328:
                    329:        /*
                    330:         * If the user handed us a complete IP packet, use it.
                    331:         * Otherwise, allocate an mbuf for a header and fill it in.
                    332:         */
1.13      mycroft   333:        if ((inp->inp_flags & INP_HDRINCL) == 0) {
1.35      thorpej   334:                if ((m->m_pkthdr.len + sizeof(struct ip)) > IP_MAXPACKET) {
                    335:                        m_freem(m);
                    336:                        return (EMSGSIZE);
                    337:                }
1.68      itojun    338:                M_PREPEND(m, sizeof(struct ip), M_DONTWAIT);
                    339:                if (!m)
                    340:                        return (ENOBUFS);
1.1       cgd       341:                ip = mtod(m, struct ip *);
                    342:                ip->ip_tos = 0;
1.62      itojun    343:                ip->ip_off = htons(0);
1.13      mycroft   344:                ip->ip_p = inp->inp_ip.ip_p;
1.62      itojun    345:                ip->ip_len = htons(m->m_pkthdr.len);
1.13      mycroft   346:                ip->ip_src = inp->inp_laddr;
1.27      mycroft   347:                ip->ip_dst = inp->inp_faddr;
1.1       cgd       348:                ip->ip_ttl = MAXTTL;
1.13      mycroft   349:                opts = inp->inp_options;
                    350:        } else {
1.35      thorpej   351:                if (m->m_pkthdr.len > IP_MAXPACKET) {
                    352:                        m_freem(m);
                    353:                        return (EMSGSIZE);
                    354:                }
1.13      mycroft   355:                ip = mtod(m, struct ip *);
1.65      thorpej   356:
                    357:                /*
                    358:                 * If the mbuf is read-only, we need to allocate
                    359:                 * a new mbuf for the header, since we need to
                    360:                 * modify the header.
                    361:                 */
                    362:                if (M_READONLY(m)) {
                    363:                        int hlen = ip->ip_hl << 2;
                    364:
                    365:                        m = m_copyup(m, hlen, (max_linkhdr + 3) & ~3);
                    366:                        if (m == NULL)
                    367:                                return (ENOMEM);        /* XXX */
                    368:                        ip = mtod(m, struct ip *);
                    369:                }
                    370:
1.62      itojun    371:                /* XXX userland passes ip_len and ip_off in host order */
1.38      mycroft   372:                if (m->m_pkthdr.len != ip->ip_len) {
                    373:                        m_freem(m);
                    374:                        return (EINVAL);
                    375:                }
1.62      itojun    376:                HTONS(ip->ip_len);
                    377:                HTONS(ip->ip_off);
1.103     matt      378:                if (ip->ip_id != 0 || m->m_pkthdr.len < IP_MINFRAGSIZE)
                    379:                        flags |= IP_NOIPNEWID;
1.13      mycroft   380:                opts = NULL;
                    381:                /* XXX prevent ip_output from overwriting header fields */
                    382:                flags |= IP_RAWOUTPUT;
1.105     thorpej   383:                IP_STATINC(IP_STAT_RAWOUT);
1.1       cgd       384:        }
1.114.2.3! tls       385:
        !           386:        /*
        !           387:         * IP output.  Note: if IP_RETURNMTU flag is set, the MTU size
        !           388:         * will be stored in inp_errormtu.
        !           389:         */
        !           390:        return ip_output(m, opts, &inp->inp_route, flags, inp->inp_moptions,
        !           391:             inp->inp_socket);
1.1       cgd       392: }
                    393:
                    394: /*
                    395:  * Raw IP socket option processing.
                    396:  */
1.9       mycroft   397: int
1.108     plunky    398: rip_ctloutput(int op, struct socket *so, struct sockopt *sopt)
1.1       cgd       399: {
1.53      augustss  400:        struct inpcb *inp = sotoinpcb(so);
1.31      mycroft   401:        int error = 0;
1.108     plunky    402:        int optval;
1.1       cgd       403:
1.108     plunky    404:        if (sopt->sopt_level == SOL_SOCKET && sopt->sopt_name == SO_NOHEADER) {
1.100     dyoung    405:                if (op == PRCO_GETOPT) {
1.108     plunky    406:                        optval = (inp->inp_flags & INP_NOHEADER) ? 1 : 0;
                    407:                        error = sockopt_set(sopt, &optval, sizeof(optval));
                    408:                } else if (op == PRCO_SETOPT) {
                    409:                        error = sockopt_getint(sopt, &optval);
                    410:                        if (error)
                    411:                                goto out;
                    412:                        if (optval) {
                    413:                                inp->inp_flags &= ~INP_HDRINCL;
                    414:                                inp->inp_flags |= INP_NOHEADER;
                    415:                        } else
                    416:                                inp->inp_flags &= ~INP_NOHEADER;
                    417:                }
                    418:                goto out;
                    419:        } else if (sopt->sopt_level != IPPROTO_IP)
                    420:                return ip_ctloutput(op, so, sopt);
1.100     dyoung    421:
                    422:        switch (op) {
1.31      mycroft   423:
                    424:        case PRCO_SETOPT:
1.108     plunky    425:                switch (sopt->sopt_name) {
1.31      mycroft   426:                case IP_HDRINCL:
1.108     plunky    427:                        error = sockopt_getint(sopt, &optval);
                    428:                        if (error)
                    429:                                break;
                    430:                        if (optval)
1.100     dyoung    431:                                inp->inp_flags |= INP_HDRINCL;
                    432:                        else
                    433:                                inp->inp_flags &= ~INP_HDRINCL;
1.108     plunky    434:                        break;
1.31      mycroft   435:
                    436: #ifdef MROUTING
                    437:                case MRT_INIT:
                    438:                case MRT_DONE:
                    439:                case MRT_ADD_VIF:
                    440:                case MRT_DEL_VIF:
                    441:                case MRT_ADD_MFC:
                    442:                case MRT_DEL_MFC:
                    443:                case MRT_ASSERT:
1.81      manu      444:                case MRT_API_CONFIG:
                    445:                case MRT_ADD_BW_UPCALL:
                    446:                case MRT_DEL_BW_UPCALL:
1.108     plunky    447:                        error = ip_mrouter_set(so, sopt);
1.31      mycroft   448:                        break;
                    449: #endif
                    450:
                    451:                default:
1.108     plunky    452:                        error = ip_ctloutput(op, so, sopt);
1.31      mycroft   453:                        break;
1.13      mycroft   454:                }
                    455:                break;
1.1       cgd       456:
1.31      mycroft   457:        case PRCO_GETOPT:
1.108     plunky    458:                switch (sopt->sopt_name) {
1.31      mycroft   459:                case IP_HDRINCL:
1.108     plunky    460:                        optval = inp->inp_flags & INP_HDRINCL;
                    461:                        error = sockopt_set(sopt, &optval, sizeof(optval));
1.31      mycroft   462:                        break;
                    463:
1.6       hpeyerl   464: #ifdef MROUTING
1.31      mycroft   465:                case MRT_VERSION:
                    466:                case MRT_ASSERT:
1.81      manu      467:                case MRT_API_SUPPORT:
                    468:                case MRT_API_CONFIG:
1.108     plunky    469:                        error = ip_mrouter_get(so, sopt);
1.18      mycroft   470:                        break;
1.31      mycroft   471: #endif
                    472:
1.18      mycroft   473:                default:
1.108     plunky    474:                        error = ip_ctloutput(op, so, sopt);
1.18      mycroft   475:                        break;
                    476:                }
1.31      mycroft   477:                break;
1.1       cgd       478:        }
1.108     plunky    479:  out:
1.100     dyoung    480:        return error;
1.1       cgd       481: }
                    482:
1.27      mycroft   483: int
1.114.2.3! tls       484: rip_connect_pcb(struct inpcb *inp, struct mbuf *nam)
1.29      mycroft   485: {
                    486:        struct sockaddr_in *addr = mtod(nam, struct sockaddr_in *);
                    487:
                    488:        if (nam->m_len != sizeof(*addr))
                    489:                return (EINVAL);
1.114.2.3! tls       490:        if (IFNET_EMPTY())
1.29      mycroft   491:                return (EADDRNOTAVAIL);
1.114.2.1  tls       492:        if (addr->sin_family != AF_INET)
1.29      mycroft   493:                return (EAFNOSUPPORT);
1.114.2.3! tls       494:        inp->inp_faddr = addr->sin_addr;
1.29      mycroft   495:        return (0);
                    496: }
                    497:
1.114.2.3! tls       498: static void
        !           499: rip_disconnect1(struct inpcb *inp)
1.27      mycroft   500: {
                    501:
1.114.2.3! tls       502:        inp->inp_faddr = zeroin_addr;
1.27      mycroft   503: }
                    504:
1.114.2.3! tls       505: static int
        !           506: rip_attach(struct socket *so, int proto)
1.27      mycroft   507: {
1.114.2.3! tls       508:        struct inpcb *inp;
        !           509:        int error;
1.27      mycroft   510:
1.114.2.3! tls       511:        KASSERT(sotoinpcb(so) == NULL);
        !           512:        sosetlock(so);
1.27      mycroft   513:
1.114.2.3! tls       514:        if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) {
        !           515:                error = soreserve(so, rip_sendspace, rip_recvspace);
        !           516:                if (error) {
        !           517:                        return error;
        !           518:                }
        !           519:        }
1.13      mycroft   520:
1.114.2.3! tls       521:        error = in_pcballoc(so, &rawcbtable);
        !           522:        if (error) {
        !           523:                return error;
        !           524:        }
        !           525:        inp = sotoinpcb(so);
        !           526:        inp->inp_ip.ip_p = proto;
        !           527:        KASSERT(solocked(so));
        !           528:
        !           529:        return 0;
        !           530: }
        !           531:
        !           532: static void
        !           533: rip_detach(struct socket *so)
1.1       cgd       534: {
1.53      augustss  535:        struct inpcb *inp;
1.114.2.3! tls       536:
        !           537:        KASSERT(solocked(so));
        !           538:        inp = sotoinpcb(so);
        !           539:        KASSERT(inp != NULL);
        !           540:
1.13      mycroft   541: #ifdef MROUTING
1.6       hpeyerl   542:        extern struct socket *ip_mrouter;
1.114.2.3! tls       543:        if (so == ip_mrouter) {
        !           544:                ip_mrouter_done();
        !           545:        }
1.6       hpeyerl   546: #endif
1.114.2.3! tls       547:        in_pcbdetach(inp);
        !           548: }
1.27      mycroft   549:
1.114.2.3! tls       550: static int
        !           551: rip_accept(struct socket *so, struct mbuf *nam)
        !           552: {
        !           553:        KASSERT(solocked(so));
1.49      thorpej   554:
1.114.2.3! tls       555:        panic("rip_accept");
1.93      tls       556:
1.114.2.3! tls       557:        return EOPNOTSUPP;
        !           558: }
1.22      pk        559:
1.114.2.3! tls       560: static int
        !           561: rip_bind(struct socket *so, struct mbuf *nam, struct lwp *l)
        !           562: {
        !           563:        struct inpcb *inp = sotoinpcb(so);
        !           564:        struct sockaddr_in *addr;
        !           565:        int error = 0;
        !           566:        int s;
        !           567:
        !           568:        KASSERT(solocked(so));
        !           569:        KASSERT(inp != NULL);
        !           570:        KASSERT(nam != NULL);
        !           571:
        !           572:        s = splsoftnet();
        !           573:        addr = mtod(nam, struct sockaddr_in *);
        !           574:        if (nam->m_len != sizeof(*addr)) {
1.22      pk        575:                error = EINVAL;
                    576:                goto release;
                    577:        }
1.114.2.3! tls       578:        if (IFNET_EMPTY()) {
        !           579:                error = EADDRNOTAVAIL;
        !           580:                goto release;
        !           581:        }
        !           582:        if (addr->sin_family != AF_INET) {
        !           583:                error = EAFNOSUPPORT;
        !           584:                goto release;
        !           585:        }
        !           586:        if (!in_nullhost(addr->sin_addr) &&
        !           587:            ifa_ifwithaddr(sintosa(addr)) == 0) {
        !           588:                error = EADDRNOTAVAIL;
        !           589:                goto release;
        !           590:        }
        !           591:        inp->inp_laddr = addr->sin_addr;
1.22      pk        592:
1.114.2.3! tls       593: release:
        !           594:        splx(s);
        !           595:        return error;
        !           596: }
1.1       cgd       597:
1.114.2.3! tls       598: static int
        !           599: rip_listen(struct socket *so, struct lwp *l)
        !           600: {
        !           601:        KASSERT(solocked(so));
1.94      elad      602:
1.114.2.3! tls       603:        return EOPNOTSUPP;
        !           604: }
1.94      elad      605:
1.114.2.3! tls       606: static int
        !           607: rip_connect(struct socket *so, struct mbuf *nam, struct lwp *l)
        !           608: {
        !           609:        struct inpcb *inp = sotoinpcb(so);
        !           610:        int error = 0;
        !           611:        int s;
1.94      elad      612:
1.114.2.3! tls       613:        KASSERT(solocked(so));
        !           614:        KASSERT(inp != NULL);
        !           615:        KASSERT(nam != NULL);
1.1       cgd       616:
1.114.2.3! tls       617:        s = splsoftnet();
        !           618:        error = rip_connect_pcb(inp, nam);
        !           619:        if (! error)
        !           620:                soisconnected(so);
        !           621:        splx(s);
1.1       cgd       622:
1.114.2.3! tls       623:        return error;
        !           624: }
1.27      mycroft   625:
1.114.2.3! tls       626: static int
        !           627: rip_connect2(struct socket *so, struct socket *so2)
        !           628: {
        !           629:        KASSERT(solocked(so));
1.27      mycroft   630:
1.114.2.3! tls       631:        return EOPNOTSUPP;
        !           632: }
1.13      mycroft   633:
1.114.2.3! tls       634: static int
        !           635: rip_disconnect(struct socket *so)
        !           636: {
        !           637:        struct inpcb *inp = sotoinpcb(so);
        !           638:        int s;
1.13      mycroft   639:
1.114.2.3! tls       640:        KASSERT(solocked(so));
        !           641:        KASSERT(inp != NULL);
        !           642:
        !           643:        s = splsoftnet();
        !           644:        soisdisconnected(so);
        !           645:        rip_disconnect1(inp);
        !           646:        splx(s);
        !           647:
        !           648:        return 0;
        !           649: }
        !           650:
        !           651: static int
        !           652: rip_shutdown(struct socket *so)
        !           653: {
        !           654:        int s;
        !           655:
        !           656:        KASSERT(solocked(so));
1.27      mycroft   657:
1.13      mycroft   658:        /*
                    659:         * Mark the connection as being incapable of further input.
                    660:         */
1.114.2.3! tls       661:        s = splsoftnet();
        !           662:        socantsendmore(so);
        !           663:        splx(s);
1.13      mycroft   664:
1.114.2.3! tls       665:        return 0;
        !           666: }
        !           667:
        !           668: static int
        !           669: rip_abort(struct socket *so)
        !           670: {
        !           671:        KASSERT(solocked(so));
        !           672:
        !           673:        panic("rip_abort");
        !           674:
        !           675:        return EOPNOTSUPP;
        !           676: }
        !           677:
        !           678: static int
        !           679: rip_ioctl(struct socket *so, u_long cmd, void *nam, struct ifnet *ifp)
        !           680: {
        !           681:        return in_control(so, cmd, nam, ifp);
        !           682: }
        !           683:
        !           684: static int
        !           685: rip_stat(struct socket *so, struct stat *ub)
        !           686: {
        !           687:        KASSERT(solocked(so));
        !           688:
        !           689:        /* stat: don't bother with a blocksize. */
        !           690:        return 0;
        !           691: }
        !           692:
        !           693: static int
        !           694: rip_peeraddr(struct socket *so, struct mbuf *nam)
        !           695: {
        !           696:        int s;
        !           697:
        !           698:        KASSERT(solocked(so));
        !           699:        KASSERT(sotoinpcb(so) != NULL);
        !           700:        KASSERT(nam != NULL);
        !           701:
        !           702:        s = splsoftnet();
        !           703:        in_setpeeraddr(sotoinpcb(so), nam);
        !           704:        splx(s);
        !           705:
        !           706:        return 0;
        !           707: }
        !           708:
        !           709: static int
        !           710: rip_sockaddr(struct socket *so, struct mbuf *nam)
        !           711: {
        !           712:        int s;
        !           713:
        !           714:        KASSERT(solocked(so));
        !           715:        KASSERT(sotoinpcb(so) != NULL);
        !           716:        KASSERT(nam != NULL);
        !           717:
        !           718:        s = splsoftnet();
        !           719:        in_setsockaddr(sotoinpcb(so), nam);
        !           720:        splx(s);
        !           721:
        !           722:        return 0;
        !           723: }
        !           724:
        !           725: static int
        !           726: rip_rcvd(struct socket *so, int flags, struct lwp *l)
        !           727: {
        !           728:        KASSERT(solocked(so));
        !           729:
        !           730:        return EOPNOTSUPP;
        !           731: }
        !           732:
        !           733: static int
        !           734: rip_recvoob(struct socket *so, struct mbuf *m, int flags)
        !           735: {
        !           736:        KASSERT(solocked(so));
        !           737:
        !           738:        return EOPNOTSUPP;
        !           739: }
        !           740:
        !           741: static int
        !           742: rip_send(struct socket *so, struct mbuf *m, struct mbuf *nam,
        !           743:     struct mbuf *control, struct lwp *l)
        !           744: {
        !           745:        struct inpcb *inp = sotoinpcb(so);
        !           746:        int error = 0;
        !           747:        int s;
        !           748:
        !           749:        KASSERT(solocked(so));
        !           750:        KASSERT(inp != NULL);
        !           751:        KASSERT(m != NULL);
1.27      mycroft   752:
1.13      mycroft   753:        /*
                    754:         * Ship a packet out.  The appropriate raw output
                    755:         * routine handles any massaging necessary.
                    756:         */
1.114.2.3! tls       757:        if (control && control->m_len) {
        !           758:                m_freem(control);
        !           759:                m_freem(m);
        !           760:                return EINVAL;
        !           761:        }
        !           762:
        !           763:        s = splsoftnet();
        !           764:        if (nam) {
        !           765:                if ((so->so_state & SS_ISCONNECTED) != 0) {
        !           766:                        error = EISCONN;
        !           767:                        goto die;
        !           768:                }
        !           769:                error = rip_connect_pcb(inp, nam);
        !           770:                if (error) {
        !           771:                die:
1.28      mycroft   772:                        m_freem(m);
1.114.2.3! tls       773:                        splx(s);
        !           774:                        return error;
        !           775:                }
        !           776:        } else {
        !           777:                if ((so->so_state & SS_ISCONNECTED) == 0) {
        !           778:                        error = ENOTCONN;
        !           779:                        goto die;
1.28      mycroft   780:                }
                    781:        }
1.114.2.3! tls       782:        error = rip_output(m, inp);
        !           783:        if (nam)
        !           784:                rip_disconnect1(inp);
1.13      mycroft   785:
1.114.2.3! tls       786:        splx(s);
        !           787:        return error;
        !           788: }
1.27      mycroft   789:
1.114.2.3! tls       790: static int
        !           791: rip_sendoob(struct socket *so, struct mbuf *m, struct mbuf *control)
        !           792: {
        !           793:        KASSERT(solocked(so));
1.13      mycroft   794:
1.114.2.3! tls       795:        m_freem(m);
        !           796:        m_freem(control);
1.13      mycroft   797:
1.114.2.3! tls       798:        return EOPNOTSUPP;
        !           799: }
1.13      mycroft   800:
1.114.2.3! tls       801: static int
        !           802: rip_purgeif(struct socket *so, struct ifnet *ifp)
        !           803: {
        !           804:        int s;
1.27      mycroft   805:
1.114.2.3! tls       806:        s = splsoftnet();
        !           807:        mutex_enter(softnet_lock);
        !           808:        in_pcbpurgeif0(&rawcbtable, ifp);
        !           809:        in_purgeif(ifp);
        !           810:        in_pcbpurgeif(&rawcbtable, ifp);
        !           811:        mutex_exit(softnet_lock);
1.27      mycroft   812:        splx(s);
1.114.2.3! tls       813:
        !           814:        return 0;
1.1       cgd       815: }
1.84      atatat    816:
1.114.2.3! tls       817: int
        !           818: rip_usrreq(struct socket *so, int req, struct mbuf *m, struct mbuf *nam,
        !           819:     struct mbuf *control, struct lwp *l)
        !           820: {
        !           821:        KASSERT(req != PRU_ATTACH);
        !           822:        KASSERT(req != PRU_DETACH);
        !           823:        KASSERT(req != PRU_ACCEPT);
        !           824:        KASSERT(req != PRU_BIND);
        !           825:        KASSERT(req != PRU_LISTEN);
        !           826:        KASSERT(req != PRU_CONNECT);
        !           827:        KASSERT(req != PRU_CONNECT2);
        !           828:        KASSERT(req != PRU_DISCONNECT);
        !           829:        KASSERT(req != PRU_SHUTDOWN);
        !           830:        KASSERT(req != PRU_ABORT);
        !           831:        KASSERT(req != PRU_CONTROL);
        !           832:        KASSERT(req != PRU_SENSE);
        !           833:        KASSERT(req != PRU_PEERADDR);
        !           834:        KASSERT(req != PRU_SOCKADDR);
        !           835:        KASSERT(req != PRU_RCVD);
        !           836:        KASSERT(req != PRU_RCVOOB);
        !           837:        KASSERT(req != PRU_SEND);
        !           838:        KASSERT(req != PRU_SENDOOB);
        !           839:        KASSERT(req != PRU_PURGEIF);
        !           840:
        !           841:        KASSERT(solocked(so));
        !           842:
        !           843:        if (sotoinpcb(so) == NULL)
        !           844:                return EINVAL;
        !           845:
        !           846:        panic("rip_usrreq");
        !           847:
        !           848:        return 0;
        !           849: }
        !           850:
        !           851: PR_WRAP_USRREQS(rip)
        !           852: #define        rip_attach      rip_attach_wrapper
        !           853: #define        rip_detach      rip_detach_wrapper
        !           854: #define        rip_accept      rip_accept_wrapper
        !           855: #define        rip_bind        rip_bind_wrapper
        !           856: #define        rip_listen      rip_listen_wrapper
        !           857: #define        rip_connect     rip_connect_wrapper
        !           858: #define        rip_connect2    rip_connect2_wrapper
        !           859: #define        rip_disconnect  rip_disconnect_wrapper
        !           860: #define        rip_shutdown    rip_shutdown_wrapper
        !           861: #define        rip_abort       rip_abort_wrapper
        !           862: #define        rip_ioctl       rip_ioctl_wrapper
        !           863: #define        rip_stat        rip_stat_wrapper
        !           864: #define        rip_peeraddr    rip_peeraddr_wrapper
        !           865: #define        rip_sockaddr    rip_sockaddr_wrapper
        !           866: #define        rip_rcvd        rip_rcvd_wrapper
        !           867: #define        rip_recvoob     rip_recvoob_wrapper
        !           868: #define        rip_send        rip_send_wrapper
        !           869: #define        rip_sendoob     rip_sendoob_wrapper
        !           870: #define        rip_purgeif     rip_purgeif_wrapper
        !           871: #define        rip_usrreq      rip_usrreq_wrapper
        !           872:
        !           873: const struct pr_usrreqs rip_usrreqs = {
        !           874:        .pr_attach      = rip_attach,
        !           875:        .pr_detach      = rip_detach,
        !           876:        .pr_accept      = rip_accept,
        !           877:        .pr_bind        = rip_bind,
        !           878:        .pr_listen      = rip_listen,
        !           879:        .pr_connect     = rip_connect,
        !           880:        .pr_connect2    = rip_connect2,
        !           881:        .pr_disconnect  = rip_disconnect,
        !           882:        .pr_shutdown    = rip_shutdown,
        !           883:        .pr_abort       = rip_abort,
        !           884:        .pr_ioctl       = rip_ioctl,
        !           885:        .pr_stat        = rip_stat,
        !           886:        .pr_peeraddr    = rip_peeraddr,
        !           887:        .pr_sockaddr    = rip_sockaddr,
        !           888:        .pr_rcvd        = rip_rcvd,
        !           889:        .pr_recvoob     = rip_recvoob,
        !           890:        .pr_send        = rip_send,
        !           891:        .pr_sendoob     = rip_sendoob,
        !           892:        .pr_purgeif     = rip_purgeif,
        !           893:        .pr_generic     = rip_usrreq,
        !           894: };
        !           895:
1.110     pooka     896: static void
                    897: sysctl_net_inet_raw_setup(struct sysctllog **clog)
1.84      atatat    898: {
                    899:
                    900:        sysctl_createv(clog, 0, NULL, NULL,
                    901:                       CTLFLAG_PERMANENT,
                    902:                       CTLTYPE_NODE, "inet", NULL,
                    903:                       NULL, 0, NULL, 0,
                    904:                       CTL_NET, PF_INET, CTL_EOL);
                    905:        sysctl_createv(clog, 0, NULL, NULL,
                    906:                       CTLFLAG_PERMANENT,
                    907:                       CTLTYPE_NODE, "raw",
                    908:                       SYSCTL_DESCR("Raw IPv4 settings"),
                    909:                       NULL, 0, NULL, 0,
                    910:                       CTL_NET, PF_INET, IPPROTO_RAW, CTL_EOL);
                    911:
                    912:        sysctl_createv(clog, 0, NULL, NULL,
                    913:                       CTLFLAG_PERMANENT,
1.86      atatat    914:                       CTLTYPE_STRUCT, "pcblist",
1.84      atatat    915:                       SYSCTL_DESCR("Raw IPv4 control block list"),
                    916:                       sysctl_inpcblist, 0, &rawcbtable, 0,
                    917:                       CTL_NET, PF_INET, IPPROTO_RAW,
                    918:                       CTL_CREATE, CTL_EOL);
                    919: }

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