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Annotation of src/sys/netinet/raw_ip.c, Revision 1.46.8.1

1.46.8.1! wrstuden    1: /*     $NetBSD: raw_ip.c,v 1.47 1999/12/13 15:17:20 itojun 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:
1.44      darrenr    98: extern u_char ip_protox[];
                     99: extern struct  protosw inetsw[];
1.20      mycroft   100: struct inpcbtable rawcbtable;
1.30      pk        101:
                    102: int     rip_bind __P((struct inpcb *, struct mbuf *));
                    103: int     rip_connect __P((struct inpcb *, struct mbuf *));
                    104: void    rip_disconnect __P((struct inpcb *));
1.13      mycroft   105:
                    106: /*
                    107:  * Nominal space allocated to a raw ip socket.
                    108:  */
                    109: #define        RIPSNDQ         8192
                    110: #define        RIPRCVQ         8192
1.1       cgd       111:
                    112: /*
                    113:  * Raw interface to IP protocol.
                    114:  */
1.13      mycroft   115:
                    116: /*
                    117:  * Initialize raw connection block q.
                    118:  */
                    119: void
                    120: rip_init()
                    121: {
                    122:
1.33      mycroft   123:        in_pcbinit(&rawcbtable, 1, 1);
1.13      mycroft   124: }
                    125:
1.43      itojun    126: static struct  sockaddr_in ripsrc = { sizeof(ripsrc), AF_INET };
                    127:
1.1       cgd       128: /*
                    129:  * Setup generic address and protocol structures
                    130:  * for raw_input routine, then pass them along with
                    131:  * mbuf chain.
                    132:  */
1.9       mycroft   133: void
1.24      christos  134: #if __STDC__
                    135: rip_input(struct mbuf *m, ...)
                    136: #else
                    137: rip_input(m, va_alist)
1.1       cgd       138:        struct mbuf *m;
1.24      christos  139:        va_dcl
                    140: #endif
1.1       cgd       141: {
1.43      itojun    142:        int off, proto;
1.1       cgd       143:        register struct ip *ip = mtod(m, struct ip *);
1.13      mycroft   144:        register struct inpcb *inp;
1.36      thorpej   145:        struct inpcb *last = 0;
                    146:        struct mbuf *opts = 0;
1.32      mycroft   147:        struct sockaddr_in ripsrc;
1.43      itojun    148:        va_list ap;
                    149:
                    150:        va_start(ap, m);
                    151:        off = va_arg(ap, int);
                    152:        proto = va_arg(ap, int);
                    153:        va_end(ap);
1.1       cgd       154:
1.32      mycroft   155:        ripsrc.sin_family = AF_INET;
                    156:        ripsrc.sin_len = sizeof(struct sockaddr_in);
1.1       cgd       157:        ripsrc.sin_addr = ip->ip_src;
1.34      mycroft   158:        ripsrc.sin_port = 0;
                    159:        bzero((caddr_t)ripsrc.sin_zero, sizeof(ripsrc.sin_zero));
1.42      thorpej   160:
                    161:        /*
                    162:         * XXX Compatibility: programs using raw IP expect ip_len
                    163:         * XXX to have the header length subtracted.
                    164:         */
                    165:        ip->ip_len -= ip->ip_hl << 2;
1.32      mycroft   166:
1.21      cgd       167:        for (inp = rawcbtable.inpt_queue.cqh_first;
                    168:            inp != (struct inpcb *)&rawcbtable.inpt_queue;
                    169:            inp = inp->inp_queue.cqe_next) {
1.43      itojun    170:                if (inp->inp_ip.ip_p && inp->inp_ip.ip_p != proto)
1.13      mycroft   171:                        continue;
1.32      mycroft   172:                if (!in_nullhost(inp->inp_laddr) &&
                    173:                    !in_hosteq(inp->inp_laddr, ip->ip_dst))
1.13      mycroft   174:                        continue;
1.32      mycroft   175:                if (!in_nullhost(inp->inp_faddr) &&
                    176:                    !in_hosteq(inp->inp_faddr, ip->ip_src))
1.13      mycroft   177:                        continue;
                    178:                if (last) {
                    179:                        struct mbuf *n;
1.24      christos  180:                        if ((n = m_copy(m, 0, (int)M_COPYALL)) != NULL) {
1.36      thorpej   181:                                if (last->inp_flags & INP_CONTROLOPTS ||
                    182:                                    last->inp_socket->so_options & SO_TIMESTAMP)
                    183:                                        ip_savecontrol(last, &opts, ip, n);
                    184:                                if (sbappendaddr(&last->inp_socket->so_rcv,
                    185:                                    sintosa(&ripsrc), n, opts) == 0) {
1.13      mycroft   186:                                        /* should notify about lost packet */
                    187:                                        m_freem(n);
1.36      thorpej   188:                                        if (opts)
                    189:                                                m_freem(opts);
                    190:                                } else
                    191:                                        sorwakeup(last->inp_socket);
1.41      thorpej   192:                                opts = NULL;
1.13      mycroft   193:                        }
                    194:                }
1.36      thorpej   195:                last = inp;
1.13      mycroft   196:        }
                    197:        if (last) {
1.36      thorpej   198:                if (last->inp_flags & INP_CONTROLOPTS ||
                    199:                    last->inp_socket->so_options & SO_TIMESTAMP)
                    200:                        ip_savecontrol(last, &opts, ip, m);
                    201:                if (sbappendaddr(&last->inp_socket->so_rcv,
                    202:                    sintosa(&ripsrc), m, opts) == 0) {
1.13      mycroft   203:                        m_freem(m);
1.36      thorpej   204:                        if (opts)
                    205:                                m_freem(opts);
                    206:                } else
                    207:                        sorwakeup(last->inp_socket);
1.13      mycroft   208:        } else {
1.44      darrenr   209:                if (inetsw[ip_protox[ip->ip_p]].pr_input == rip_input) {
1.46.8.1! wrstuden  210:                        icmp_error(m, ICMP_UNREACH, ICMP_UNREACH_PROTOCOL,
        !           211:                            0, 0);
1.44      darrenr   212:                        ipstat.ips_noproto++;
                    213:                        ipstat.ips_delivered--;
                    214:                } else
                    215:                        m_freem(m);
1.1       cgd       216:        }
1.43      itojun    217:        return;
1.1       cgd       218: }
                    219:
                    220: /*
                    221:  * Generate IP header and pass packet to ip_output.
                    222:  * Tack on options user may have setup with control call.
                    223:  */
1.9       mycroft   224: int
1.24      christos  225: #if __STDC__
                    226: rip_output(struct mbuf *m, ...)
                    227: #else
                    228: rip_output(m, va_alist)
                    229:        struct mbuf *m;
                    230:        va_dcl
                    231: #endif
                    232: {
1.27      mycroft   233:        register struct inpcb *inp;
1.1       cgd       234:        register struct ip *ip;
1.10      mycroft   235:        struct mbuf *opts;
1.24      christos  236:        int flags;
                    237:        va_list ap;
                    238:
                    239:        va_start(ap, m);
1.27      mycroft   240:        inp = va_arg(ap, struct inpcb *);
1.24      christos  241:        va_end(ap);
                    242:
1.27      mycroft   243:        flags =
1.37      matt      244:            (inp->inp_socket->so_options & SO_DONTROUTE) | IP_ALLOWBROADCAST
                    245:            | IP_RETURNMTU;
1.1       cgd       246:
                    247:        /*
                    248:         * If the user handed us a complete IP packet, use it.
                    249:         * Otherwise, allocate an mbuf for a header and fill it in.
                    250:         */
1.13      mycroft   251:        if ((inp->inp_flags & INP_HDRINCL) == 0) {
1.35      thorpej   252:                if ((m->m_pkthdr.len + sizeof(struct ip)) > IP_MAXPACKET) {
                    253:                        m_freem(m);
                    254:                        return (EMSGSIZE);
                    255:                }
1.1       cgd       256:                M_PREPEND(m, sizeof(struct ip), M_WAIT);
                    257:                ip = mtod(m, struct ip *);
                    258:                ip->ip_tos = 0;
                    259:                ip->ip_off = 0;
1.13      mycroft   260:                ip->ip_p = inp->inp_ip.ip_p;
1.1       cgd       261:                ip->ip_len = m->m_pkthdr.len;
1.13      mycroft   262:                ip->ip_src = inp->inp_laddr;
1.27      mycroft   263:                ip->ip_dst = inp->inp_faddr;
1.1       cgd       264:                ip->ip_ttl = MAXTTL;
1.13      mycroft   265:                opts = inp->inp_options;
                    266:        } else {
1.35      thorpej   267:                if (m->m_pkthdr.len > IP_MAXPACKET) {
                    268:                        m_freem(m);
                    269:                        return (EMSGSIZE);
                    270:                }
1.13      mycroft   271:                ip = mtod(m, struct ip *);
1.38      mycroft   272:                if (m->m_pkthdr.len != ip->ip_len) {
                    273:                        m_freem(m);
                    274:                        return (EINVAL);
                    275:                }
1.13      mycroft   276:                if (ip->ip_id == 0)
                    277:                        ip->ip_id = htons(ip_id++);
                    278:                opts = NULL;
                    279:                /* XXX prevent ip_output from overwriting header fields */
                    280:                flags |= IP_RAWOUTPUT;
                    281:                ipstat.ips_rawout++;
1.1       cgd       282:        }
1.43      itojun    283: #ifdef IPSEC
                    284:        m->m_pkthdr.rcvif = (struct ifnet *)inp->inp_socket;    /*XXX*/
                    285: #endif /*IPSEC*/
1.37      matt      286:        return (ip_output(m, opts, &inp->inp_route, flags, inp->inp_moptions, &inp->inp_errormtu));
1.1       cgd       287: }
                    288:
                    289: /*
                    290:  * Raw IP socket option processing.
                    291:  */
1.9       mycroft   292: int
1.1       cgd       293: rip_ctloutput(op, so, level, optname, m)
                    294:        int op;
                    295:        struct socket *so;
                    296:        int level, optname;
                    297:        struct mbuf **m;
                    298: {
1.13      mycroft   299:        register struct inpcb *inp = sotoinpcb(so);
1.31      mycroft   300:        int error = 0;
1.1       cgd       301:
1.15      mycroft   302:        if (level != IPPROTO_IP) {
1.31      mycroft   303:                error = ENOPROTOOPT;
                    304:                if (op == PRCO_SETOPT && *m != 0)
                    305:                        (void) m_free(*m);
                    306:        } else switch (op) {
                    307:
                    308:        case PRCO_SETOPT:
                    309:                switch (optname) {
                    310:                case IP_HDRINCL:
                    311:                        if (*m == 0 || (*m)->m_len < sizeof (int))
                    312:                                error = EINVAL;
                    313:                        else {
1.13      mycroft   314:                                if (*mtod(*m, int *))
                    315:                                        inp->inp_flags |= INP_HDRINCL;
                    316:                                else
                    317:                                        inp->inp_flags &= ~INP_HDRINCL;
                    318:                        }
1.31      mycroft   319:                        if (*m != 0)
                    320:                                (void) m_free(*m);
                    321:                        break;
                    322:
                    323: #ifdef MROUTING
                    324:                case MRT_INIT:
                    325:                case MRT_DONE:
                    326:                case MRT_ADD_VIF:
                    327:                case MRT_DEL_VIF:
                    328:                case MRT_ADD_MFC:
                    329:                case MRT_DEL_MFC:
                    330:                case MRT_ASSERT:
                    331:                        error = ip_mrouter_set(so, optname, m);
                    332:                        break;
                    333: #endif
                    334:
                    335:                default:
                    336:                        error = ip_ctloutput(op, so, level, optname, m);
                    337:                        break;
1.13      mycroft   338:                }
                    339:                break;
1.1       cgd       340:
1.31      mycroft   341:        case PRCO_GETOPT:
                    342:                switch (optname) {
                    343:                case IP_HDRINCL:
                    344:                        *m = m_get(M_WAIT, M_SOOPTS);
                    345:                        (*m)->m_len = sizeof (int);
                    346:                        *mtod(*m, int *) = inp->inp_flags & INP_HDRINCL ? 1 : 0;
                    347:                        break;
                    348:
1.6       hpeyerl   349: #ifdef MROUTING
1.31      mycroft   350:                case MRT_VERSION:
                    351:                case MRT_ASSERT:
                    352:                        error = ip_mrouter_get(so, optname, m);
1.18      mycroft   353:                        break;
1.31      mycroft   354: #endif
                    355:
1.18      mycroft   356:                default:
1.31      mycroft   357:                        error = ip_ctloutput(op, so, level, optname, m);
1.18      mycroft   358:                        break;
                    359:                }
1.31      mycroft   360:                break;
1.1       cgd       361:        }
1.31      mycroft   362:        return (error);
1.1       cgd       363: }
                    364:
1.27      mycroft   365: int
1.29      mycroft   366: rip_bind(inp, nam)
                    367:        struct inpcb *inp;
                    368:        struct mbuf *nam;
                    369: {
                    370:        struct sockaddr_in *addr = mtod(nam, struct sockaddr_in *);
                    371:
                    372:        if (nam->m_len != sizeof(*addr))
                    373:                return (EINVAL);
                    374:        if (ifnet.tqh_first == 0)
                    375:                return (EADDRNOTAVAIL);
                    376:        if (addr->sin_family != AF_INET &&
                    377:            addr->sin_family != AF_IMPLINK)
                    378:                return (EAFNOSUPPORT);
1.32      mycroft   379:        if (!in_nullhost(addr->sin_addr) &&
1.29      mycroft   380:            ifa_ifwithaddr(sintosa(addr)) == 0)
                    381:                return (EADDRNOTAVAIL);
                    382:        inp->inp_laddr = addr->sin_addr;
                    383:        return (0);
                    384: }
                    385:
                    386: int
1.27      mycroft   387: rip_connect(inp, nam)
                    388:        struct inpcb *inp;
                    389:        struct mbuf *nam;
                    390: {
                    391:        struct sockaddr_in *addr = mtod(nam, struct sockaddr_in *);
                    392:
                    393:        if (nam->m_len != sizeof(*addr))
                    394:                return (EINVAL);
                    395:        if (ifnet.tqh_first == 0)
                    396:                return (EADDRNOTAVAIL);
                    397:        if (addr->sin_family != AF_INET &&
                    398:            addr->sin_family != AF_IMPLINK)
                    399:                return (EAFNOSUPPORT);
                    400:        inp->inp_faddr = addr->sin_addr;
                    401:        return (0);
                    402: }
                    403:
                    404: void
                    405: rip_disconnect(inp)
                    406:        struct inpcb *inp;
                    407: {
                    408:
1.32      mycroft   409:        inp->inp_faddr = zeroin_addr;
1.27      mycroft   410: }
                    411:
1.13      mycroft   412: u_long rip_sendspace = RIPSNDQ;
                    413: u_long rip_recvspace = RIPRCVQ;
                    414:
1.1       cgd       415: /*ARGSUSED*/
1.9       mycroft   416: int
1.26      mycroft   417: rip_usrreq(so, req, m, nam, control, p)
1.1       cgd       418:        register struct socket *so;
                    419:        int req;
1.2       cgd       420:        struct mbuf *m, *nam, *control;
1.26      mycroft   421:        struct proc *p;
1.1       cgd       422: {
1.27      mycroft   423:        register struct inpcb *inp;
                    424:        int s;
1.1       cgd       425:        register int error = 0;
1.13      mycroft   426: #ifdef MROUTING
1.6       hpeyerl   427:        extern struct socket *ip_mrouter;
                    428: #endif
1.27      mycroft   429:
1.22      pk        430:        if (req == PRU_CONTROL)
                    431:                return (in_control(so, (long)m, (caddr_t)nam,
1.26      mycroft   432:                    (struct ifnet *)control, p));
1.22      pk        433:
1.27      mycroft   434:        s = splsoftnet();
                    435:        inp = sotoinpcb(so);
1.28      mycroft   436: #ifdef DIAGNOSTIC
                    437:        if (req != PRU_SEND && req != PRU_SENDOOB && control)
                    438:                panic("rip_usrreq: unexpected control mbuf");
                    439: #endif
1.27      mycroft   440:        if (inp == 0 && req != PRU_ATTACH) {
1.22      pk        441:                error = EINVAL;
                    442:                goto release;
                    443:        }
                    444:
1.1       cgd       445:        switch (req) {
                    446:
                    447:        case PRU_ATTACH:
1.27      mycroft   448:                if (inp != 0) {
                    449:                        error = EISCONN;
                    450:                        break;
                    451:                }
1.26      mycroft   452:                if (p == 0 || (error = suser(p->p_ucred, &p->p_acflag))) {
1.13      mycroft   453:                        error = EACCES;
                    454:                        break;
                    455:                }
1.27      mycroft   456:                if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) {
                    457:                        error = soreserve(so, rip_sendspace, rip_recvspace);
                    458:                        if (error)
                    459:                                break;
                    460:                }
                    461:                error = in_pcballoc(so, &rawcbtable);
                    462:                if (error)
1.13      mycroft   463:                        break;
1.27      mycroft   464:                inp = sotoinpcb(so);
1.17      cgd       465:                inp->inp_ip.ip_p = (long)nam;
1.43      itojun    466: #ifdef IPSEC
1.46.8.1! wrstuden  467:                error = ipsec_init_policy(&inp->inp_sp);
        !           468:                if (error != 0) {
1.46      itojun    469:                        in_pcbdetach(inp);
1.46.8.1! wrstuden  470:                        break;
        !           471:                }
1.43      itojun    472: #endif /*IPSEC*/
1.1       cgd       473:                break;
                    474:
                    475:        case PRU_DETACH:
1.13      mycroft   476: #ifdef MROUTING
1.6       hpeyerl   477:                if (so == ip_mrouter)
                    478:                        ip_mrouter_done();
                    479: #endif
1.13      mycroft   480:                in_pcbdetach(inp);
1.1       cgd       481:                break;
                    482:
                    483:        case PRU_BIND:
1.29      mycroft   484:                error = rip_bind(inp, nam);
1.27      mycroft   485:                break;
                    486:
                    487:        case PRU_LISTEN:
                    488:                error = EOPNOTSUPP;
                    489:                break;
                    490:
                    491:        case PRU_CONNECT:
                    492:                error = rip_connect(inp, nam);
                    493:                if (error)
1.13      mycroft   494:                        break;
1.1       cgd       495:                soisconnected(so);
1.13      mycroft   496:                break;
                    497:
                    498:        case PRU_CONNECT2:
                    499:                error = EOPNOTSUPP;
                    500:                break;
                    501:
1.27      mycroft   502:        case PRU_DISCONNECT:
                    503:                soisdisconnected(so);
                    504:                rip_disconnect(inp);
                    505:                break;
                    506:
1.13      mycroft   507:        /*
                    508:         * Mark the connection as being incapable of further input.
                    509:         */
                    510:        case PRU_SHUTDOWN:
                    511:                socantsendmore(so);
                    512:                break;
                    513:
1.27      mycroft   514:        case PRU_RCVD:
                    515:                error = EOPNOTSUPP;
                    516:                break;
                    517:
1.13      mycroft   518:        /*
                    519:         * Ship a packet out.  The appropriate raw output
                    520:         * routine handles any massaging necessary.
                    521:         */
                    522:        case PRU_SEND:
1.28      mycroft   523:                if (control && control->m_len) {
                    524:                        m_freem(control);
                    525:                        m_freem(m);
                    526:                        error = EINVAL;
                    527:                        break;
                    528:                }
                    529:        {
1.27      mycroft   530:                if (nam) {
                    531:                        if ((so->so_state & SS_ISCONNECTED) != 0) {
1.13      mycroft   532:                                error = EISCONN;
1.28      mycroft   533:                                goto die;
1.13      mycroft   534:                        }
1.27      mycroft   535:                        error = rip_connect(inp, nam);
                    536:                        if (error) {
1.28      mycroft   537:                        die:
1.27      mycroft   538:                                m_freem(m);
                    539:                                break;
                    540:                        }
1.13      mycroft   541:                } else {
1.27      mycroft   542:                        if ((so->so_state & SS_ISCONNECTED) == 0) {
1.13      mycroft   543:                                error = ENOTCONN;
1.28      mycroft   544:                                goto die;
1.13      mycroft   545:                        }
                    546:                }
1.27      mycroft   547:                error = rip_output(m, inp);
                    548:                if (nam)
                    549:                        rip_disconnect(inp);
1.28      mycroft   550:        }
1.13      mycroft   551:                break;
                    552:
                    553:        case PRU_SENSE:
                    554:                /*
                    555:                 * stat: don't bother with a blocksize.
                    556:                 */
1.27      mycroft   557:                splx(s);
1.1       cgd       558:                return (0);
1.13      mycroft   559:
                    560:        case PRU_RCVOOB:
1.27      mycroft   561:                error = EOPNOTSUPP;
                    562:                break;
                    563:
1.13      mycroft   564:        case PRU_SENDOOB:
1.28      mycroft   565:                m_freem(control);
1.27      mycroft   566:                m_freem(m);
1.13      mycroft   567:                error = EOPNOTSUPP;
                    568:                break;
                    569:
                    570:        case PRU_SOCKADDR:
                    571:                in_setsockaddr(inp, nam);
                    572:                break;
                    573:
                    574:        case PRU_PEERADDR:
                    575:                in_setpeeraddr(inp, nam);
                    576:                break;
                    577:
                    578:        default:
                    579:                panic("rip_usrreq");
1.1       cgd       580:        }
1.27      mycroft   581:
1.22      pk        582: release:
1.27      mycroft   583:        splx(s);
1.1       cgd       584:        return (error);
                    585: }

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