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Annotation of src/sys/netinet/raw_ip.c, Revision 1.51

1.51    ! darrenr     1: /*     $NetBSD: raw_ip.c,v 1.50 2000/02/02 23:28:09 thorpej Exp $      */
1.43      itojun      2:
                      3: /*
                      4:  * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
                      5:  * All rights reserved.
                      6:  *
                      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.
                     18:  *
                     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.
                     44:  * 3. All advertising materials mentioning features or use of this software
                     45:  *    must display the following acknowledgement:
                     46:  *     This product includes software developed by the University of
                     47:  *     California, Berkeley and its contributors.
                     48:  * 4. Neither the name of the University nor the names of its contributors
                     49:  *    may be used to endorse or promote products derived from this software
                     50:  *    without specific prior written permission.
                     51:  *
                     52:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
                     53:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     54:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     55:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
                     56:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     57:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     58:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     59:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     60:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     61:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     62:  * SUCH DAMAGE.
                     63:  *
1.39      thorpej    64:  *     @(#)raw_ip.c    8.7 (Berkeley) 5/15/95
1.1       cgd        65:  */
1.40      scottr     66:
1.45      thorpej    67: #include "opt_ipsec.h"
1.40      scottr     68: #include "opt_mrouting.h"
1.1       cgd        69:
1.7       mycroft    70: #include <sys/param.h>
                     71: #include <sys/malloc.h>
                     72: #include <sys/mbuf.h>
                     73: #include <sys/socket.h>
                     74: #include <sys/protosw.h>
                     75: #include <sys/socketvar.h>
                     76: #include <sys/errno.h>
1.13      mycroft    77: #include <sys/systm.h>
1.26      mycroft    78: #include <sys/proc.h>
1.1       cgd        79:
1.7       mycroft    80: #include <net/if.h>
                     81: #include <net/route.h>
1.1       cgd        82:
1.7       mycroft    83: #include <netinet/in.h>
                     84: #include <netinet/in_systm.h>
                     85: #include <netinet/ip.h>
                     86: #include <netinet/ip_var.h>
1.13      mycroft    87: #include <netinet/ip_mroute.h>
1.44      darrenr    88: #include <netinet/ip_icmp.h>
1.7       mycroft    89: #include <netinet/in_pcb.h>
1.24      christos   90: #include <netinet/in_var.h>
                     91:
                     92: #include <machine/stdarg.h>
1.13      mycroft    93:
1.43      itojun     94: #ifdef IPSEC
                     95: #include <netinet6/ipsec.h>
                     96: #endif /*IPSEC*/
                     97:
1.20      mycroft    98: struct inpcbtable rawcbtable;
1.30      pk         99:
                    100: int     rip_bind __P((struct inpcb *, struct mbuf *));
                    101: int     rip_connect __P((struct inpcb *, struct mbuf *));
                    102: void    rip_disconnect __P((struct inpcb *));
1.13      mycroft   103:
                    104: /*
                    105:  * Nominal space allocated to a raw ip socket.
                    106:  */
                    107: #define        RIPSNDQ         8192
                    108: #define        RIPRCVQ         8192
1.1       cgd       109:
                    110: /*
                    111:  * Raw interface to IP protocol.
                    112:  */
1.13      mycroft   113:
                    114: /*
                    115:  * Initialize raw connection block q.
                    116:  */
                    117: void
                    118: rip_init()
                    119: {
                    120:
1.33      mycroft   121:        in_pcbinit(&rawcbtable, 1, 1);
1.13      mycroft   122: }
                    123:
1.43      itojun    124: static struct  sockaddr_in ripsrc = { sizeof(ripsrc), AF_INET };
                    125:
1.1       cgd       126: /*
                    127:  * Setup generic address and protocol structures
                    128:  * for raw_input routine, then pass them along with
                    129:  * mbuf chain.
                    130:  */
1.9       mycroft   131: void
1.24      christos  132: #if __STDC__
                    133: rip_input(struct mbuf *m, ...)
                    134: #else
                    135: rip_input(m, va_alist)
1.1       cgd       136:        struct mbuf *m;
1.24      christos  137:        va_dcl
                    138: #endif
1.1       cgd       139: {
1.43      itojun    140:        int off, proto;
1.1       cgd       141:        register struct ip *ip = mtod(m, struct ip *);
1.13      mycroft   142:        register struct inpcb *inp;
1.36      thorpej   143:        struct inpcb *last = 0;
                    144:        struct mbuf *opts = 0;
1.32      mycroft   145:        struct sockaddr_in ripsrc;
1.43      itojun    146:        va_list ap;
                    147:
                    148:        va_start(ap, m);
                    149:        off = va_arg(ap, int);
                    150:        proto = va_arg(ap, int);
                    151:        va_end(ap);
1.1       cgd       152:
1.32      mycroft   153:        ripsrc.sin_family = AF_INET;
                    154:        ripsrc.sin_len = sizeof(struct sockaddr_in);
1.1       cgd       155:        ripsrc.sin_addr = ip->ip_src;
1.34      mycroft   156:        ripsrc.sin_port = 0;
                    157:        bzero((caddr_t)ripsrc.sin_zero, sizeof(ripsrc.sin_zero));
1.42      thorpej   158:
                    159:        /*
                    160:         * XXX Compatibility: programs using raw IP expect ip_len
                    161:         * XXX to have the header length subtracted.
                    162:         */
                    163:        ip->ip_len -= ip->ip_hl << 2;
1.32      mycroft   164:
1.21      cgd       165:        for (inp = rawcbtable.inpt_queue.cqh_first;
                    166:            inp != (struct inpcb *)&rawcbtable.inpt_queue;
                    167:            inp = inp->inp_queue.cqe_next) {
1.43      itojun    168:                if (inp->inp_ip.ip_p && inp->inp_ip.ip_p != proto)
1.13      mycroft   169:                        continue;
1.32      mycroft   170:                if (!in_nullhost(inp->inp_laddr) &&
                    171:                    !in_hosteq(inp->inp_laddr, ip->ip_dst))
1.13      mycroft   172:                        continue;
1.32      mycroft   173:                if (!in_nullhost(inp->inp_faddr) &&
                    174:                    !in_hosteq(inp->inp_faddr, ip->ip_src))
1.13      mycroft   175:                        continue;
                    176:                if (last) {
                    177:                        struct mbuf *n;
1.24      christos  178:                        if ((n = m_copy(m, 0, (int)M_COPYALL)) != NULL) {
1.36      thorpej   179:                                if (last->inp_flags & INP_CONTROLOPTS ||
                    180:                                    last->inp_socket->so_options & SO_TIMESTAMP)
                    181:                                        ip_savecontrol(last, &opts, ip, n);
                    182:                                if (sbappendaddr(&last->inp_socket->so_rcv,
                    183:                                    sintosa(&ripsrc), n, opts) == 0) {
1.13      mycroft   184:                                        /* should notify about lost packet */
                    185:                                        m_freem(n);
1.36      thorpej   186:                                        if (opts)
                    187:                                                m_freem(opts);
                    188:                                } else
                    189:                                        sorwakeup(last->inp_socket);
1.41      thorpej   190:                                opts = NULL;
1.13      mycroft   191:                        }
                    192:                }
1.36      thorpej   193:                last = inp;
1.13      mycroft   194:        }
                    195:        if (last) {
1.36      thorpej   196:                if (last->inp_flags & INP_CONTROLOPTS ||
                    197:                    last->inp_socket->so_options & SO_TIMESTAMP)
                    198:                        ip_savecontrol(last, &opts, ip, m);
                    199:                if (sbappendaddr(&last->inp_socket->so_rcv,
                    200:                    sintosa(&ripsrc), m, opts) == 0) {
1.13      mycroft   201:                        m_freem(m);
1.36      thorpej   202:                        if (opts)
                    203:                                m_freem(opts);
                    204:                } else
                    205:                        sorwakeup(last->inp_socket);
1.13      mycroft   206:        } else {
1.44      darrenr   207:                if (inetsw[ip_protox[ip->ip_p]].pr_input == rip_input) {
1.47      itojun    208:                        icmp_error(m, ICMP_UNREACH, ICMP_UNREACH_PROTOCOL,
                    209:                            0, 0);
1.44      darrenr   210:                        ipstat.ips_noproto++;
                    211:                        ipstat.ips_delivered--;
                    212:                } else
                    213:                        m_freem(m);
1.1       cgd       214:        }
1.43      itojun    215:        return;
1.1       cgd       216: }
                    217:
                    218: /*
                    219:  * Generate IP header and pass packet to ip_output.
                    220:  * Tack on options user may have setup with control call.
                    221:  */
1.9       mycroft   222: int
1.24      christos  223: #if __STDC__
                    224: rip_output(struct mbuf *m, ...)
                    225: #else
                    226: rip_output(m, va_alist)
                    227:        struct mbuf *m;
                    228:        va_dcl
                    229: #endif
                    230: {
1.27      mycroft   231:        register struct inpcb *inp;
1.1       cgd       232:        register struct ip *ip;
1.10      mycroft   233:        struct mbuf *opts;
1.24      christos  234:        int flags;
                    235:        va_list ap;
                    236:
                    237:        va_start(ap, m);
1.27      mycroft   238:        inp = va_arg(ap, struct inpcb *);
1.24      christos  239:        va_end(ap);
                    240:
1.27      mycroft   241:        flags =
1.37      matt      242:            (inp->inp_socket->so_options & SO_DONTROUTE) | IP_ALLOWBROADCAST
                    243:            | IP_RETURNMTU;
1.1       cgd       244:
                    245:        /*
                    246:         * If the user handed us a complete IP packet, use it.
                    247:         * Otherwise, allocate an mbuf for a header and fill it in.
                    248:         */
1.13      mycroft   249:        if ((inp->inp_flags & INP_HDRINCL) == 0) {
1.35      thorpej   250:                if ((m->m_pkthdr.len + sizeof(struct ip)) > IP_MAXPACKET) {
                    251:                        m_freem(m);
                    252:                        return (EMSGSIZE);
                    253:                }
1.1       cgd       254:                M_PREPEND(m, sizeof(struct ip), M_WAIT);
                    255:                ip = mtod(m, struct ip *);
                    256:                ip->ip_tos = 0;
                    257:                ip->ip_off = 0;
1.13      mycroft   258:                ip->ip_p = inp->inp_ip.ip_p;
1.1       cgd       259:                ip->ip_len = m->m_pkthdr.len;
1.13      mycroft   260:                ip->ip_src = inp->inp_laddr;
1.27      mycroft   261:                ip->ip_dst = inp->inp_faddr;
1.1       cgd       262:                ip->ip_ttl = MAXTTL;
1.13      mycroft   263:                opts = inp->inp_options;
                    264:        } else {
1.35      thorpej   265:                if (m->m_pkthdr.len > IP_MAXPACKET) {
                    266:                        m_freem(m);
                    267:                        return (EMSGSIZE);
                    268:                }
1.13      mycroft   269:                ip = mtod(m, struct ip *);
1.38      mycroft   270:                if (m->m_pkthdr.len != ip->ip_len) {
                    271:                        m_freem(m);
                    272:                        return (EINVAL);
                    273:                }
1.13      mycroft   274:                if (ip->ip_id == 0)
                    275:                        ip->ip_id = htons(ip_id++);
                    276:                opts = NULL;
                    277:                /* XXX prevent ip_output from overwriting header fields */
                    278:                flags |= IP_RAWOUTPUT;
                    279:                ipstat.ips_rawout++;
1.1       cgd       280:        }
1.43      itojun    281: #ifdef IPSEC
                    282:        m->m_pkthdr.rcvif = (struct ifnet *)inp->inp_socket;    /*XXX*/
                    283: #endif /*IPSEC*/
1.37      matt      284:        return (ip_output(m, opts, &inp->inp_route, flags, inp->inp_moptions, &inp->inp_errormtu));
1.1       cgd       285: }
                    286:
                    287: /*
                    288:  * Raw IP socket option processing.
                    289:  */
1.9       mycroft   290: int
1.1       cgd       291: rip_ctloutput(op, so, level, optname, m)
                    292:        int op;
                    293:        struct socket *so;
                    294:        int level, optname;
                    295:        struct mbuf **m;
                    296: {
1.13      mycroft   297:        register struct inpcb *inp = sotoinpcb(so);
1.31      mycroft   298:        int error = 0;
1.1       cgd       299:
1.15      mycroft   300:        if (level != IPPROTO_IP) {
1.31      mycroft   301:                error = ENOPROTOOPT;
                    302:                if (op == PRCO_SETOPT && *m != 0)
                    303:                        (void) m_free(*m);
                    304:        } else switch (op) {
                    305:
                    306:        case PRCO_SETOPT:
                    307:                switch (optname) {
                    308:                case IP_HDRINCL:
                    309:                        if (*m == 0 || (*m)->m_len < sizeof (int))
                    310:                                error = EINVAL;
                    311:                        else {
1.13      mycroft   312:                                if (*mtod(*m, int *))
                    313:                                        inp->inp_flags |= INP_HDRINCL;
                    314:                                else
                    315:                                        inp->inp_flags &= ~INP_HDRINCL;
                    316:                        }
1.31      mycroft   317:                        if (*m != 0)
                    318:                                (void) m_free(*m);
                    319:                        break;
                    320:
                    321: #ifdef MROUTING
                    322:                case MRT_INIT:
                    323:                case MRT_DONE:
                    324:                case MRT_ADD_VIF:
                    325:                case MRT_DEL_VIF:
                    326:                case MRT_ADD_MFC:
                    327:                case MRT_DEL_MFC:
                    328:                case MRT_ASSERT:
                    329:                        error = ip_mrouter_set(so, optname, m);
                    330:                        break;
                    331: #endif
                    332:
                    333:                default:
                    334:                        error = ip_ctloutput(op, so, level, optname, m);
                    335:                        break;
1.13      mycroft   336:                }
                    337:                break;
1.1       cgd       338:
1.31      mycroft   339:        case PRCO_GETOPT:
                    340:                switch (optname) {
                    341:                case IP_HDRINCL:
                    342:                        *m = m_get(M_WAIT, M_SOOPTS);
                    343:                        (*m)->m_len = sizeof (int);
                    344:                        *mtod(*m, int *) = inp->inp_flags & INP_HDRINCL ? 1 : 0;
                    345:                        break;
                    346:
1.6       hpeyerl   347: #ifdef MROUTING
1.31      mycroft   348:                case MRT_VERSION:
                    349:                case MRT_ASSERT:
                    350:                        error = ip_mrouter_get(so, optname, m);
1.18      mycroft   351:                        break;
1.31      mycroft   352: #endif
                    353:
1.18      mycroft   354:                default:
1.31      mycroft   355:                        error = ip_ctloutput(op, so, level, optname, m);
1.18      mycroft   356:                        break;
                    357:                }
1.31      mycroft   358:                break;
1.1       cgd       359:        }
1.31      mycroft   360:        return (error);
1.1       cgd       361: }
                    362:
1.27      mycroft   363: int
1.29      mycroft   364: rip_bind(inp, nam)
                    365:        struct inpcb *inp;
                    366:        struct mbuf *nam;
                    367: {
                    368:        struct sockaddr_in *addr = mtod(nam, struct sockaddr_in *);
                    369:
                    370:        if (nam->m_len != sizeof(*addr))
                    371:                return (EINVAL);
                    372:        if (ifnet.tqh_first == 0)
                    373:                return (EADDRNOTAVAIL);
                    374:        if (addr->sin_family != AF_INET &&
                    375:            addr->sin_family != AF_IMPLINK)
                    376:                return (EAFNOSUPPORT);
1.32      mycroft   377:        if (!in_nullhost(addr->sin_addr) &&
1.29      mycroft   378:            ifa_ifwithaddr(sintosa(addr)) == 0)
                    379:                return (EADDRNOTAVAIL);
                    380:        inp->inp_laddr = addr->sin_addr;
                    381:        return (0);
                    382: }
                    383:
                    384: int
1.27      mycroft   385: rip_connect(inp, nam)
                    386:        struct inpcb *inp;
                    387:        struct mbuf *nam;
                    388: {
                    389:        struct sockaddr_in *addr = mtod(nam, struct sockaddr_in *);
                    390:
                    391:        if (nam->m_len != sizeof(*addr))
                    392:                return (EINVAL);
                    393:        if (ifnet.tqh_first == 0)
                    394:                return (EADDRNOTAVAIL);
                    395:        if (addr->sin_family != AF_INET &&
                    396:            addr->sin_family != AF_IMPLINK)
                    397:                return (EAFNOSUPPORT);
                    398:        inp->inp_faddr = addr->sin_addr;
                    399:        return (0);
                    400: }
                    401:
                    402: void
                    403: rip_disconnect(inp)
                    404:        struct inpcb *inp;
                    405: {
                    406:
1.32      mycroft   407:        inp->inp_faddr = zeroin_addr;
1.27      mycroft   408: }
                    409:
1.13      mycroft   410: u_long rip_sendspace = RIPSNDQ;
                    411: u_long rip_recvspace = RIPRCVQ;
                    412:
1.1       cgd       413: /*ARGSUSED*/
1.9       mycroft   414: int
1.26      mycroft   415: rip_usrreq(so, req, m, nam, control, p)
1.1       cgd       416:        register struct socket *so;
                    417:        int req;
1.2       cgd       418:        struct mbuf *m, *nam, *control;
1.26      mycroft   419:        struct proc *p;
1.1       cgd       420: {
1.27      mycroft   421:        register struct inpcb *inp;
                    422:        int s;
1.1       cgd       423:        register int error = 0;
1.13      mycroft   424: #ifdef MROUTING
1.6       hpeyerl   425:        extern struct socket *ip_mrouter;
                    426: #endif
1.27      mycroft   427:
1.22      pk        428:        if (req == PRU_CONTROL)
                    429:                return (in_control(so, (long)m, (caddr_t)nam,
1.26      mycroft   430:                    (struct ifnet *)control, p));
1.49      thorpej   431:
1.50      thorpej   432:        if (req == PRU_PURGEIF) {
                    433:                in_purgeif((struct ifnet *)control);
                    434:                in_pcbpurgeif(&rawcbtable, (struct ifnet *)control);
1.49      thorpej   435:                return (0);
                    436:        }
1.22      pk        437:
1.27      mycroft   438:        s = splsoftnet();
                    439:        inp = sotoinpcb(so);
1.28      mycroft   440: #ifdef DIAGNOSTIC
                    441:        if (req != PRU_SEND && req != PRU_SENDOOB && control)
                    442:                panic("rip_usrreq: unexpected control mbuf");
                    443: #endif
1.27      mycroft   444:        if (inp == 0 && req != PRU_ATTACH) {
1.22      pk        445:                error = EINVAL;
                    446:                goto release;
                    447:        }
                    448:
1.1       cgd       449:        switch (req) {
                    450:
                    451:        case PRU_ATTACH:
1.27      mycroft   452:                if (inp != 0) {
                    453:                        error = EISCONN;
                    454:                        break;
                    455:                }
1.26      mycroft   456:                if (p == 0 || (error = suser(p->p_ucred, &p->p_acflag))) {
1.13      mycroft   457:                        error = EACCES;
                    458:                        break;
                    459:                }
1.27      mycroft   460:                if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) {
                    461:                        error = soreserve(so, rip_sendspace, rip_recvspace);
                    462:                        if (error)
                    463:                                break;
                    464:                }
                    465:                error = in_pcballoc(so, &rawcbtable);
                    466:                if (error)
1.13      mycroft   467:                        break;
1.27      mycroft   468:                inp = sotoinpcb(so);
1.17      cgd       469:                inp->inp_ip.ip_p = (long)nam;
1.43      itojun    470: #ifdef IPSEC
1.48      itojun    471:                error = ipsec_init_policy(so, &inp->inp_sp);
1.47      itojun    472:                if (error != 0) {
1.46      itojun    473:                        in_pcbdetach(inp);
1.47      itojun    474:                        break;
                    475:                }
1.43      itojun    476: #endif /*IPSEC*/
1.1       cgd       477:                break;
                    478:
                    479:        case PRU_DETACH:
1.13      mycroft   480: #ifdef MROUTING
1.6       hpeyerl   481:                if (so == ip_mrouter)
                    482:                        ip_mrouter_done();
                    483: #endif
1.13      mycroft   484:                in_pcbdetach(inp);
1.1       cgd       485:                break;
                    486:
                    487:        case PRU_BIND:
1.29      mycroft   488:                error = rip_bind(inp, nam);
1.27      mycroft   489:                break;
                    490:
                    491:        case PRU_LISTEN:
                    492:                error = EOPNOTSUPP;
                    493:                break;
                    494:
                    495:        case PRU_CONNECT:
                    496:                error = rip_connect(inp, nam);
                    497:                if (error)
1.13      mycroft   498:                        break;
1.1       cgd       499:                soisconnected(so);
1.13      mycroft   500:                break;
                    501:
                    502:        case PRU_CONNECT2:
                    503:                error = EOPNOTSUPP;
                    504:                break;
                    505:
1.27      mycroft   506:        case PRU_DISCONNECT:
                    507:                soisdisconnected(so);
                    508:                rip_disconnect(inp);
                    509:                break;
                    510:
1.13      mycroft   511:        /*
                    512:         * Mark the connection as being incapable of further input.
                    513:         */
                    514:        case PRU_SHUTDOWN:
                    515:                socantsendmore(so);
                    516:                break;
                    517:
1.27      mycroft   518:        case PRU_RCVD:
                    519:                error = EOPNOTSUPP;
                    520:                break;
                    521:
1.13      mycroft   522:        /*
                    523:         * Ship a packet out.  The appropriate raw output
                    524:         * routine handles any massaging necessary.
                    525:         */
                    526:        case PRU_SEND:
1.28      mycroft   527:                if (control && control->m_len) {
                    528:                        m_freem(control);
                    529:                        m_freem(m);
                    530:                        error = EINVAL;
                    531:                        break;
                    532:                }
                    533:        {
1.27      mycroft   534:                if (nam) {
                    535:                        if ((so->so_state & SS_ISCONNECTED) != 0) {
1.13      mycroft   536:                                error = EISCONN;
1.28      mycroft   537:                                goto die;
1.13      mycroft   538:                        }
1.27      mycroft   539:                        error = rip_connect(inp, nam);
                    540:                        if (error) {
1.28      mycroft   541:                        die:
1.27      mycroft   542:                                m_freem(m);
                    543:                                break;
                    544:                        }
1.13      mycroft   545:                } else {
1.27      mycroft   546:                        if ((so->so_state & SS_ISCONNECTED) == 0) {
1.13      mycroft   547:                                error = ENOTCONN;
1.28      mycroft   548:                                goto die;
1.13      mycroft   549:                        }
                    550:                }
1.27      mycroft   551:                error = rip_output(m, inp);
                    552:                if (nam)
                    553:                        rip_disconnect(inp);
1.28      mycroft   554:        }
1.13      mycroft   555:                break;
                    556:
                    557:        case PRU_SENSE:
                    558:                /*
                    559:                 * stat: don't bother with a blocksize.
                    560:                 */
1.27      mycroft   561:                splx(s);
1.1       cgd       562:                return (0);
1.13      mycroft   563:
                    564:        case PRU_RCVOOB:
1.27      mycroft   565:                error = EOPNOTSUPP;
                    566:                break;
                    567:
1.13      mycroft   568:        case PRU_SENDOOB:
1.28      mycroft   569:                m_freem(control);
1.27      mycroft   570:                m_freem(m);
1.13      mycroft   571:                error = EOPNOTSUPP;
                    572:                break;
                    573:
                    574:        case PRU_SOCKADDR:
                    575:                in_setsockaddr(inp, nam);
                    576:                break;
                    577:
                    578:        case PRU_PEERADDR:
                    579:                in_setpeeraddr(inp, nam);
                    580:                break;
                    581:
                    582:        default:
                    583:                panic("rip_usrreq");
1.1       cgd       584:        }
1.27      mycroft   585:
1.22      pk        586: release:
1.27      mycroft   587:        splx(s);
1.1       cgd       588:        return (error);
                    589: }

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