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Annotation of src/sys/netinet/raw_ip.c, Revision 1.54

1.54    ! itojun      1: /*     $NetBSD: raw_ip.c,v 1.53 2000/03/30 13:25:04 augustss 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;
1.53      augustss  141:        struct ip *ip = mtod(m, struct ip *);
                    142:        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: {
1.53      augustss  231:        struct inpcb *inp;
                    232:        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
1.54    ! itojun    282:        if (ipsec_setsocket(m, inp->inp_socket) != 0) {
        !           283:                m_freem(m);
        !           284:                return ENOBUFS;
        !           285:        }
1.43      itojun    286: #endif /*IPSEC*/
1.37      matt      287:        return (ip_output(m, opts, &inp->inp_route, flags, inp->inp_moptions, &inp->inp_errormtu));
1.1       cgd       288: }
                    289:
                    290: /*
                    291:  * Raw IP socket option processing.
                    292:  */
1.9       mycroft   293: int
1.1       cgd       294: rip_ctloutput(op, so, level, optname, m)
                    295:        int op;
                    296:        struct socket *so;
                    297:        int level, optname;
                    298:        struct mbuf **m;
                    299: {
1.53      augustss  300:        struct inpcb *inp = sotoinpcb(so);
1.31      mycroft   301:        int error = 0;
1.1       cgd       302:
1.15      mycroft   303:        if (level != IPPROTO_IP) {
1.31      mycroft   304:                error = ENOPROTOOPT;
                    305:                if (op == PRCO_SETOPT && *m != 0)
                    306:                        (void) m_free(*m);
                    307:        } else switch (op) {
                    308:
                    309:        case PRCO_SETOPT:
                    310:                switch (optname) {
                    311:                case IP_HDRINCL:
                    312:                        if (*m == 0 || (*m)->m_len < sizeof (int))
                    313:                                error = EINVAL;
                    314:                        else {
1.13      mycroft   315:                                if (*mtod(*m, int *))
                    316:                                        inp->inp_flags |= INP_HDRINCL;
                    317:                                else
                    318:                                        inp->inp_flags &= ~INP_HDRINCL;
                    319:                        }
1.31      mycroft   320:                        if (*m != 0)
                    321:                                (void) m_free(*m);
                    322:                        break;
                    323:
                    324: #ifdef MROUTING
                    325:                case MRT_INIT:
                    326:                case MRT_DONE:
                    327:                case MRT_ADD_VIF:
                    328:                case MRT_DEL_VIF:
                    329:                case MRT_ADD_MFC:
                    330:                case MRT_DEL_MFC:
                    331:                case MRT_ASSERT:
                    332:                        error = ip_mrouter_set(so, optname, m);
                    333:                        break;
                    334: #endif
                    335:
                    336:                default:
                    337:                        error = ip_ctloutput(op, so, level, optname, m);
                    338:                        break;
1.13      mycroft   339:                }
                    340:                break;
1.1       cgd       341:
1.31      mycroft   342:        case PRCO_GETOPT:
                    343:                switch (optname) {
                    344:                case IP_HDRINCL:
                    345:                        *m = m_get(M_WAIT, M_SOOPTS);
                    346:                        (*m)->m_len = sizeof (int);
                    347:                        *mtod(*m, int *) = inp->inp_flags & INP_HDRINCL ? 1 : 0;
                    348:                        break;
                    349:
1.6       hpeyerl   350: #ifdef MROUTING
1.31      mycroft   351:                case MRT_VERSION:
                    352:                case MRT_ASSERT:
                    353:                        error = ip_mrouter_get(so, optname, m);
1.18      mycroft   354:                        break;
1.31      mycroft   355: #endif
                    356:
1.18      mycroft   357:                default:
1.31      mycroft   358:                        error = ip_ctloutput(op, so, level, optname, m);
1.18      mycroft   359:                        break;
                    360:                }
1.31      mycroft   361:                break;
1.1       cgd       362:        }
1.31      mycroft   363:        return (error);
1.1       cgd       364: }
                    365:
1.27      mycroft   366: int
1.29      mycroft   367: rip_bind(inp, nam)
                    368:        struct inpcb *inp;
                    369:        struct mbuf *nam;
                    370: {
                    371:        struct sockaddr_in *addr = mtod(nam, struct sockaddr_in *);
                    372:
                    373:        if (nam->m_len != sizeof(*addr))
                    374:                return (EINVAL);
                    375:        if (ifnet.tqh_first == 0)
                    376:                return (EADDRNOTAVAIL);
                    377:        if (addr->sin_family != AF_INET &&
                    378:            addr->sin_family != AF_IMPLINK)
                    379:                return (EAFNOSUPPORT);
1.32      mycroft   380:        if (!in_nullhost(addr->sin_addr) &&
1.29      mycroft   381:            ifa_ifwithaddr(sintosa(addr)) == 0)
                    382:                return (EADDRNOTAVAIL);
                    383:        inp->inp_laddr = addr->sin_addr;
                    384:        return (0);
                    385: }
                    386:
                    387: int
1.27      mycroft   388: rip_connect(inp, nam)
                    389:        struct inpcb *inp;
                    390:        struct mbuf *nam;
                    391: {
                    392:        struct sockaddr_in *addr = mtod(nam, struct sockaddr_in *);
                    393:
                    394:        if (nam->m_len != sizeof(*addr))
                    395:                return (EINVAL);
                    396:        if (ifnet.tqh_first == 0)
                    397:                return (EADDRNOTAVAIL);
                    398:        if (addr->sin_family != AF_INET &&
                    399:            addr->sin_family != AF_IMPLINK)
                    400:                return (EAFNOSUPPORT);
                    401:        inp->inp_faddr = addr->sin_addr;
                    402:        return (0);
                    403: }
                    404:
                    405: void
                    406: rip_disconnect(inp)
                    407:        struct inpcb *inp;
                    408: {
                    409:
1.32      mycroft   410:        inp->inp_faddr = zeroin_addr;
1.27      mycroft   411: }
                    412:
1.13      mycroft   413: u_long rip_sendspace = RIPSNDQ;
                    414: u_long rip_recvspace = RIPRCVQ;
                    415:
1.1       cgd       416: /*ARGSUSED*/
1.9       mycroft   417: int
1.26      mycroft   418: rip_usrreq(so, req, m, nam, control, p)
1.53      augustss  419:        struct socket *so;
1.1       cgd       420:        int req;
1.2       cgd       421:        struct mbuf *m, *nam, *control;
1.26      mycroft   422:        struct proc *p;
1.1       cgd       423: {
1.53      augustss  424:        struct inpcb *inp;
1.27      mycroft   425:        int s;
1.53      augustss  426:        int error = 0;
1.13      mycroft   427: #ifdef MROUTING
1.6       hpeyerl   428:        extern struct socket *ip_mrouter;
                    429: #endif
1.27      mycroft   430:
1.22      pk        431:        if (req == PRU_CONTROL)
                    432:                return (in_control(so, (long)m, (caddr_t)nam,
1.26      mycroft   433:                    (struct ifnet *)control, p));
1.49      thorpej   434:
1.50      thorpej   435:        if (req == PRU_PURGEIF) {
                    436:                in_purgeif((struct ifnet *)control);
                    437:                in_pcbpurgeif(&rawcbtable, (struct ifnet *)control);
1.49      thorpej   438:                return (0);
                    439:        }
1.22      pk        440:
1.27      mycroft   441:        s = splsoftnet();
                    442:        inp = sotoinpcb(so);
1.28      mycroft   443: #ifdef DIAGNOSTIC
                    444:        if (req != PRU_SEND && req != PRU_SENDOOB && control)
                    445:                panic("rip_usrreq: unexpected control mbuf");
                    446: #endif
1.27      mycroft   447:        if (inp == 0 && req != PRU_ATTACH) {
1.22      pk        448:                error = EINVAL;
                    449:                goto release;
                    450:        }
                    451:
1.1       cgd       452:        switch (req) {
                    453:
                    454:        case PRU_ATTACH:
1.27      mycroft   455:                if (inp != 0) {
                    456:                        error = EISCONN;
                    457:                        break;
                    458:                }
1.26      mycroft   459:                if (p == 0 || (error = suser(p->p_ucred, &p->p_acflag))) {
1.13      mycroft   460:                        error = EACCES;
                    461:                        break;
                    462:                }
1.27      mycroft   463:                if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) {
                    464:                        error = soreserve(so, rip_sendspace, rip_recvspace);
                    465:                        if (error)
                    466:                                break;
                    467:                }
                    468:                error = in_pcballoc(so, &rawcbtable);
                    469:                if (error)
1.13      mycroft   470:                        break;
1.27      mycroft   471:                inp = sotoinpcb(so);
1.17      cgd       472:                inp->inp_ip.ip_p = (long)nam;
1.43      itojun    473: #ifdef IPSEC
1.48      itojun    474:                error = ipsec_init_policy(so, &inp->inp_sp);
1.47      itojun    475:                if (error != 0) {
1.46      itojun    476:                        in_pcbdetach(inp);
1.47      itojun    477:                        break;
                    478:                }
1.43      itojun    479: #endif /*IPSEC*/
1.1       cgd       480:                break;
                    481:
                    482:        case PRU_DETACH:
1.13      mycroft   483: #ifdef MROUTING
1.6       hpeyerl   484:                if (so == ip_mrouter)
                    485:                        ip_mrouter_done();
                    486: #endif
1.13      mycroft   487:                in_pcbdetach(inp);
1.1       cgd       488:                break;
                    489:
                    490:        case PRU_BIND:
1.29      mycroft   491:                error = rip_bind(inp, nam);
1.27      mycroft   492:                break;
                    493:
                    494:        case PRU_LISTEN:
                    495:                error = EOPNOTSUPP;
                    496:                break;
                    497:
                    498:        case PRU_CONNECT:
                    499:                error = rip_connect(inp, nam);
                    500:                if (error)
1.13      mycroft   501:                        break;
1.1       cgd       502:                soisconnected(so);
1.13      mycroft   503:                break;
                    504:
                    505:        case PRU_CONNECT2:
                    506:                error = EOPNOTSUPP;
                    507:                break;
                    508:
1.27      mycroft   509:        case PRU_DISCONNECT:
                    510:                soisdisconnected(so);
                    511:                rip_disconnect(inp);
                    512:                break;
                    513:
1.13      mycroft   514:        /*
                    515:         * Mark the connection as being incapable of further input.
                    516:         */
                    517:        case PRU_SHUTDOWN:
                    518:                socantsendmore(so);
                    519:                break;
                    520:
1.27      mycroft   521:        case PRU_RCVD:
                    522:                error = EOPNOTSUPP;
                    523:                break;
                    524:
1.13      mycroft   525:        /*
                    526:         * Ship a packet out.  The appropriate raw output
                    527:         * routine handles any massaging necessary.
                    528:         */
                    529:        case PRU_SEND:
1.28      mycroft   530:                if (control && control->m_len) {
                    531:                        m_freem(control);
                    532:                        m_freem(m);
                    533:                        error = EINVAL;
                    534:                        break;
                    535:                }
                    536:        {
1.27      mycroft   537:                if (nam) {
                    538:                        if ((so->so_state & SS_ISCONNECTED) != 0) {
1.13      mycroft   539:                                error = EISCONN;
1.28      mycroft   540:                                goto die;
1.13      mycroft   541:                        }
1.27      mycroft   542:                        error = rip_connect(inp, nam);
                    543:                        if (error) {
1.28      mycroft   544:                        die:
1.27      mycroft   545:                                m_freem(m);
                    546:                                break;
                    547:                        }
1.13      mycroft   548:                } else {
1.27      mycroft   549:                        if ((so->so_state & SS_ISCONNECTED) == 0) {
1.13      mycroft   550:                                error = ENOTCONN;
1.28      mycroft   551:                                goto die;
1.13      mycroft   552:                        }
                    553:                }
1.27      mycroft   554:                error = rip_output(m, inp);
                    555:                if (nam)
                    556:                        rip_disconnect(inp);
1.28      mycroft   557:        }
1.13      mycroft   558:                break;
                    559:
                    560:        case PRU_SENSE:
                    561:                /*
                    562:                 * stat: don't bother with a blocksize.
                    563:                 */
1.27      mycroft   564:                splx(s);
1.1       cgd       565:                return (0);
1.13      mycroft   566:
                    567:        case PRU_RCVOOB:
1.27      mycroft   568:                error = EOPNOTSUPP;
                    569:                break;
                    570:
1.13      mycroft   571:        case PRU_SENDOOB:
1.28      mycroft   572:                m_freem(control);
1.27      mycroft   573:                m_freem(m);
1.13      mycroft   574:                error = EOPNOTSUPP;
                    575:                break;
                    576:
                    577:        case PRU_SOCKADDR:
                    578:                in_setsockaddr(inp, nam);
                    579:                break;
                    580:
                    581:        case PRU_PEERADDR:
                    582:                in_setpeeraddr(inp, nam);
                    583:                break;
                    584:
                    585:        default:
                    586:                panic("rip_usrreq");
1.1       cgd       587:        }
1.27      mycroft   588:
1.22      pk        589: release:
1.27      mycroft   590:        splx(s);
1.1       cgd       591:        return (error);
                    592: }

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