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Annotation of src/sys/netinet/raw_ip.c, Revision 1.42.6.3

1.42.6.3! itojun      1: /*     $NetBSD: raw_ip.c,v 1.42 1999/01/30 21:43:16 thorpej Exp $      */
1.42.6.2  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:
1.42.6.3! itojun     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>
1.7       mycroft    88: #include <netinet/in_pcb.h>
1.24      christos   89: #include <netinet/in_var.h>
                     90:
                     91: #include <machine/stdarg.h>
1.13      mycroft    92:
1.42.6.1  itojun     93: #ifdef IPSEC
                     94: #include <netinet6/ipsec.h>
                     95: #endif /*IPSEC*/
                     96:
1.20      mycroft    97: struct inpcbtable rawcbtable;
1.30      pk         98:
                     99: int     rip_bind __P((struct inpcb *, struct mbuf *));
                    100: int     rip_connect __P((struct inpcb *, struct mbuf *));
                    101: void    rip_disconnect __P((struct inpcb *));
1.13      mycroft   102:
                    103: /*
                    104:  * Nominal space allocated to a raw ip socket.
                    105:  */
                    106: #define        RIPSNDQ         8192
                    107: #define        RIPRCVQ         8192
1.1       cgd       108:
                    109: /*
                    110:  * Raw interface to IP protocol.
                    111:  */
1.13      mycroft   112:
                    113: /*
                    114:  * Initialize raw connection block q.
                    115:  */
                    116: void
                    117: rip_init()
                    118: {
                    119:
1.33      mycroft   120:        in_pcbinit(&rawcbtable, 1, 1);
1.13      mycroft   121: }
                    122:
1.42.6.1  itojun    123: static struct  sockaddr_in ripsrc = { sizeof(ripsrc), AF_INET };
                    124:
1.1       cgd       125: /*
                    126:  * Setup generic address and protocol structures
                    127:  * for raw_input routine, then pass them along with
                    128:  * mbuf chain.
                    129:  */
1.9       mycroft   130: void
1.24      christos  131: #if __STDC__
                    132: rip_input(struct mbuf *m, ...)
                    133: #else
                    134: rip_input(m, va_alist)
1.1       cgd       135:        struct mbuf *m;
1.24      christos  136:        va_dcl
                    137: #endif
1.1       cgd       138: {
1.42.6.1  itojun    139:        int off, proto;
1.1       cgd       140:        register struct ip *ip = mtod(m, struct ip *);
1.13      mycroft   141:        register struct inpcb *inp;
1.36      thorpej   142:        struct inpcb *last = 0;
                    143:        struct mbuf *opts = 0;
1.32      mycroft   144:        struct sockaddr_in ripsrc;
1.42.6.1  itojun    145:        va_list ap;
                    146:
                    147:        va_start(ap, m);
                    148:        off = va_arg(ap, int);
                    149:        proto = va_arg(ap, int);
                    150:        va_end(ap);
1.1       cgd       151:
1.32      mycroft   152:        ripsrc.sin_family = AF_INET;
                    153:        ripsrc.sin_len = sizeof(struct sockaddr_in);
1.1       cgd       154:        ripsrc.sin_addr = ip->ip_src;
1.34      mycroft   155:        ripsrc.sin_port = 0;
                    156:        bzero((caddr_t)ripsrc.sin_zero, sizeof(ripsrc.sin_zero));
1.42      thorpej   157:
                    158:        /*
                    159:         * XXX Compatibility: programs using raw IP expect ip_len
                    160:         * XXX to have the header length subtracted.
                    161:         */
                    162:        ip->ip_len -= ip->ip_hl << 2;
1.32      mycroft   163:
1.21      cgd       164:        for (inp = rawcbtable.inpt_queue.cqh_first;
                    165:            inp != (struct inpcb *)&rawcbtable.inpt_queue;
                    166:            inp = inp->inp_queue.cqe_next) {
1.42.6.1  itojun    167:                if (inp->inp_ip.ip_p && inp->inp_ip.ip_p != proto)
1.13      mycroft   168:                        continue;
1.32      mycroft   169:                if (!in_nullhost(inp->inp_laddr) &&
                    170:                    !in_hosteq(inp->inp_laddr, ip->ip_dst))
1.13      mycroft   171:                        continue;
1.32      mycroft   172:                if (!in_nullhost(inp->inp_faddr) &&
                    173:                    !in_hosteq(inp->inp_faddr, ip->ip_src))
1.13      mycroft   174:                        continue;
                    175:                if (last) {
                    176:                        struct mbuf *n;
1.24      christos  177:                        if ((n = m_copy(m, 0, (int)M_COPYALL)) != NULL) {
1.36      thorpej   178:                                if (last->inp_flags & INP_CONTROLOPTS ||
                    179:                                    last->inp_socket->so_options & SO_TIMESTAMP)
                    180:                                        ip_savecontrol(last, &opts, ip, n);
                    181:                                if (sbappendaddr(&last->inp_socket->so_rcv,
                    182:                                    sintosa(&ripsrc), n, opts) == 0) {
1.13      mycroft   183:                                        /* should notify about lost packet */
                    184:                                        m_freem(n);
1.36      thorpej   185:                                        if (opts)
                    186:                                                m_freem(opts);
                    187:                                } else
                    188:                                        sorwakeup(last->inp_socket);
1.41      thorpej   189:                                opts = NULL;
1.13      mycroft   190:                        }
                    191:                }
1.36      thorpej   192:                last = inp;
1.13      mycroft   193:        }
                    194:        if (last) {
1.36      thorpej   195:                if (last->inp_flags & INP_CONTROLOPTS ||
                    196:                    last->inp_socket->so_options & SO_TIMESTAMP)
                    197:                        ip_savecontrol(last, &opts, ip, m);
                    198:                if (sbappendaddr(&last->inp_socket->so_rcv,
                    199:                    sintosa(&ripsrc), m, opts) == 0) {
1.13      mycroft   200:                        m_freem(m);
1.36      thorpej   201:                        if (opts)
                    202:                                m_freem(opts);
                    203:                } else
                    204:                        sorwakeup(last->inp_socket);
1.13      mycroft   205:        } else {
                    206:                m_freem(m);
1.1       cgd       207:                ipstat.ips_noproto++;
                    208:                ipstat.ips_delivered--;
                    209:        }
1.42.6.1  itojun    210:        return;
1.1       cgd       211: }
                    212:
                    213: /*
                    214:  * Generate IP header and pass packet to ip_output.
                    215:  * Tack on options user may have setup with control call.
                    216:  */
1.9       mycroft   217: int
1.24      christos  218: #if __STDC__
                    219: rip_output(struct mbuf *m, ...)
                    220: #else
                    221: rip_output(m, va_alist)
                    222:        struct mbuf *m;
                    223:        va_dcl
                    224: #endif
                    225: {
1.27      mycroft   226:        register struct inpcb *inp;
1.1       cgd       227:        register struct ip *ip;
1.10      mycroft   228:        struct mbuf *opts;
1.24      christos  229:        int flags;
                    230:        va_list ap;
                    231:
                    232:        va_start(ap, m);
1.27      mycroft   233:        inp = va_arg(ap, struct inpcb *);
1.24      christos  234:        va_end(ap);
                    235:
1.27      mycroft   236:        flags =
1.37      matt      237:            (inp->inp_socket->so_options & SO_DONTROUTE) | IP_ALLOWBROADCAST
                    238:            | IP_RETURNMTU;
1.1       cgd       239:
                    240:        /*
                    241:         * If the user handed us a complete IP packet, use it.
                    242:         * Otherwise, allocate an mbuf for a header and fill it in.
                    243:         */
1.13      mycroft   244:        if ((inp->inp_flags & INP_HDRINCL) == 0) {
1.35      thorpej   245:                if ((m->m_pkthdr.len + sizeof(struct ip)) > IP_MAXPACKET) {
                    246:                        m_freem(m);
                    247:                        return (EMSGSIZE);
                    248:                }
1.1       cgd       249:                M_PREPEND(m, sizeof(struct ip), M_WAIT);
                    250:                ip = mtod(m, struct ip *);
                    251:                ip->ip_tos = 0;
                    252:                ip->ip_off = 0;
1.13      mycroft   253:                ip->ip_p = inp->inp_ip.ip_p;
1.1       cgd       254:                ip->ip_len = m->m_pkthdr.len;
1.13      mycroft   255:                ip->ip_src = inp->inp_laddr;
1.27      mycroft   256:                ip->ip_dst = inp->inp_faddr;
1.1       cgd       257:                ip->ip_ttl = MAXTTL;
1.13      mycroft   258:                opts = inp->inp_options;
                    259:        } else {
1.35      thorpej   260:                if (m->m_pkthdr.len > IP_MAXPACKET) {
                    261:                        m_freem(m);
                    262:                        return (EMSGSIZE);
                    263:                }
1.13      mycroft   264:                ip = mtod(m, struct ip *);
1.38      mycroft   265:                if (m->m_pkthdr.len != ip->ip_len) {
                    266:                        m_freem(m);
                    267:                        return (EINVAL);
                    268:                }
1.13      mycroft   269:                if (ip->ip_id == 0)
                    270:                        ip->ip_id = htons(ip_id++);
                    271:                opts = NULL;
                    272:                /* XXX prevent ip_output from overwriting header fields */
                    273:                flags |= IP_RAWOUTPUT;
                    274:                ipstat.ips_rawout++;
1.1       cgd       275:        }
1.42.6.1  itojun    276: #ifdef IPSEC
                    277:        m->m_pkthdr.rcvif = (struct ifnet *)inp->inp_socket;    /*XXX*/
                    278: #endif /*IPSEC*/
1.37      matt      279:        return (ip_output(m, opts, &inp->inp_route, flags, inp->inp_moptions, &inp->inp_errormtu));
1.1       cgd       280: }
                    281:
                    282: /*
                    283:  * Raw IP socket option processing.
                    284:  */
1.9       mycroft   285: int
1.1       cgd       286: rip_ctloutput(op, so, level, optname, m)
                    287:        int op;
                    288:        struct socket *so;
                    289:        int level, optname;
                    290:        struct mbuf **m;
                    291: {
1.13      mycroft   292:        register struct inpcb *inp = sotoinpcb(so);
1.31      mycroft   293:        int error = 0;
1.1       cgd       294:
1.15      mycroft   295:        if (level != IPPROTO_IP) {
1.31      mycroft   296:                error = ENOPROTOOPT;
                    297:                if (op == PRCO_SETOPT && *m != 0)
                    298:                        (void) m_free(*m);
                    299:        } else switch (op) {
                    300:
                    301:        case PRCO_SETOPT:
                    302:                switch (optname) {
                    303:                case IP_HDRINCL:
                    304:                        if (*m == 0 || (*m)->m_len < sizeof (int))
                    305:                                error = EINVAL;
                    306:                        else {
1.13      mycroft   307:                                if (*mtod(*m, int *))
                    308:                                        inp->inp_flags |= INP_HDRINCL;
                    309:                                else
                    310:                                        inp->inp_flags &= ~INP_HDRINCL;
                    311:                        }
1.31      mycroft   312:                        if (*m != 0)
                    313:                                (void) m_free(*m);
                    314:                        break;
                    315:
                    316: #ifdef MROUTING
                    317:                case MRT_INIT:
                    318:                case MRT_DONE:
                    319:                case MRT_ADD_VIF:
                    320:                case MRT_DEL_VIF:
                    321:                case MRT_ADD_MFC:
                    322:                case MRT_DEL_MFC:
                    323:                case MRT_ASSERT:
                    324:                        error = ip_mrouter_set(so, optname, m);
                    325:                        break;
                    326: #endif
                    327:
                    328:                default:
                    329:                        error = ip_ctloutput(op, so, level, optname, m);
                    330:                        break;
1.13      mycroft   331:                }
                    332:                break;
1.1       cgd       333:
1.31      mycroft   334:        case PRCO_GETOPT:
                    335:                switch (optname) {
                    336:                case IP_HDRINCL:
                    337:                        *m = m_get(M_WAIT, M_SOOPTS);
                    338:                        (*m)->m_len = sizeof (int);
                    339:                        *mtod(*m, int *) = inp->inp_flags & INP_HDRINCL ? 1 : 0;
                    340:                        break;
                    341:
1.6       hpeyerl   342: #ifdef MROUTING
1.31      mycroft   343:                case MRT_VERSION:
                    344:                case MRT_ASSERT:
                    345:                        error = ip_mrouter_get(so, optname, m);
1.18      mycroft   346:                        break;
1.31      mycroft   347: #endif
                    348:
1.18      mycroft   349:                default:
1.31      mycroft   350:                        error = ip_ctloutput(op, so, level, optname, m);
1.18      mycroft   351:                        break;
                    352:                }
1.31      mycroft   353:                break;
1.1       cgd       354:        }
1.31      mycroft   355:        return (error);
1.1       cgd       356: }
                    357:
1.27      mycroft   358: int
1.29      mycroft   359: rip_bind(inp, nam)
                    360:        struct inpcb *inp;
                    361:        struct mbuf *nam;
                    362: {
                    363:        struct sockaddr_in *addr = mtod(nam, struct sockaddr_in *);
                    364:
                    365:        if (nam->m_len != sizeof(*addr))
                    366:                return (EINVAL);
                    367:        if (ifnet.tqh_first == 0)
                    368:                return (EADDRNOTAVAIL);
                    369:        if (addr->sin_family != AF_INET &&
                    370:            addr->sin_family != AF_IMPLINK)
                    371:                return (EAFNOSUPPORT);
1.32      mycroft   372:        if (!in_nullhost(addr->sin_addr) &&
1.29      mycroft   373:            ifa_ifwithaddr(sintosa(addr)) == 0)
                    374:                return (EADDRNOTAVAIL);
                    375:        inp->inp_laddr = addr->sin_addr;
                    376:        return (0);
                    377: }
                    378:
                    379: int
1.27      mycroft   380: rip_connect(inp, nam)
                    381:        struct inpcb *inp;
                    382:        struct mbuf *nam;
                    383: {
                    384:        struct sockaddr_in *addr = mtod(nam, struct sockaddr_in *);
                    385:
                    386:        if (nam->m_len != sizeof(*addr))
                    387:                return (EINVAL);
                    388:        if (ifnet.tqh_first == 0)
                    389:                return (EADDRNOTAVAIL);
                    390:        if (addr->sin_family != AF_INET &&
                    391:            addr->sin_family != AF_IMPLINK)
                    392:                return (EAFNOSUPPORT);
                    393:        inp->inp_faddr = addr->sin_addr;
                    394:        return (0);
                    395: }
                    396:
                    397: void
                    398: rip_disconnect(inp)
                    399:        struct inpcb *inp;
                    400: {
                    401:
1.32      mycroft   402:        inp->inp_faddr = zeroin_addr;
1.27      mycroft   403: }
                    404:
1.13      mycroft   405: u_long rip_sendspace = RIPSNDQ;
                    406: u_long rip_recvspace = RIPRCVQ;
                    407:
1.1       cgd       408: /*ARGSUSED*/
1.9       mycroft   409: int
1.26      mycroft   410: rip_usrreq(so, req, m, nam, control, p)
1.1       cgd       411:        register struct socket *so;
                    412:        int req;
1.2       cgd       413:        struct mbuf *m, *nam, *control;
1.26      mycroft   414:        struct proc *p;
1.1       cgd       415: {
1.27      mycroft   416:        register struct inpcb *inp;
                    417:        int s;
1.1       cgd       418:        register int error = 0;
1.13      mycroft   419: #ifdef MROUTING
1.6       hpeyerl   420:        extern struct socket *ip_mrouter;
                    421: #endif
1.27      mycroft   422:
1.22      pk        423:        if (req == PRU_CONTROL)
                    424:                return (in_control(so, (long)m, (caddr_t)nam,
1.26      mycroft   425:                    (struct ifnet *)control, p));
1.22      pk        426:
1.27      mycroft   427:        s = splsoftnet();
                    428:        inp = sotoinpcb(so);
1.28      mycroft   429: #ifdef DIAGNOSTIC
                    430:        if (req != PRU_SEND && req != PRU_SENDOOB && control)
                    431:                panic("rip_usrreq: unexpected control mbuf");
                    432: #endif
1.27      mycroft   433:        if (inp == 0 && req != PRU_ATTACH) {
1.22      pk        434:                error = EINVAL;
                    435:                goto release;
                    436:        }
                    437:
1.1       cgd       438:        switch (req) {
                    439:
                    440:        case PRU_ATTACH:
1.27      mycroft   441:                if (inp != 0) {
                    442:                        error = EISCONN;
                    443:                        break;
                    444:                }
1.26      mycroft   445:                if (p == 0 || (error = suser(p->p_ucred, &p->p_acflag))) {
1.13      mycroft   446:                        error = EACCES;
                    447:                        break;
                    448:                }
1.27      mycroft   449:                if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) {
                    450:                        error = soreserve(so, rip_sendspace, rip_recvspace);
                    451:                        if (error)
                    452:                                break;
                    453:                }
                    454:                error = in_pcballoc(so, &rawcbtable);
                    455:                if (error)
1.13      mycroft   456:                        break;
1.27      mycroft   457:                inp = sotoinpcb(so);
1.17      cgd       458:                inp->inp_ip.ip_p = (long)nam;
1.42.6.1  itojun    459: #ifdef IPSEC
1.42.6.3! itojun    460:                error = ipsec_init_policy(so, &inp->inp_sp);
        !           461:                if (error != 0) {
        !           462:                        in_pcbdetach(inp);
        !           463:                        break;
        !           464:                }
1.42.6.1  itojun    465: #endif /*IPSEC*/
1.1       cgd       466:                break;
                    467:
                    468:        case PRU_DETACH:
1.13      mycroft   469: #ifdef MROUTING
1.6       hpeyerl   470:                if (so == ip_mrouter)
                    471:                        ip_mrouter_done();
                    472: #endif
1.13      mycroft   473:                in_pcbdetach(inp);
1.1       cgd       474:                break;
                    475:
                    476:        case PRU_BIND:
1.29      mycroft   477:                error = rip_bind(inp, nam);
1.27      mycroft   478:                break;
                    479:
                    480:        case PRU_LISTEN:
                    481:                error = EOPNOTSUPP;
                    482:                break;
                    483:
                    484:        case PRU_CONNECT:
                    485:                error = rip_connect(inp, nam);
                    486:                if (error)
1.13      mycroft   487:                        break;
1.1       cgd       488:                soisconnected(so);
1.13      mycroft   489:                break;
                    490:
                    491:        case PRU_CONNECT2:
                    492:                error = EOPNOTSUPP;
                    493:                break;
                    494:
1.27      mycroft   495:        case PRU_DISCONNECT:
                    496:                soisdisconnected(so);
                    497:                rip_disconnect(inp);
                    498:                break;
                    499:
1.13      mycroft   500:        /*
                    501:         * Mark the connection as being incapable of further input.
                    502:         */
                    503:        case PRU_SHUTDOWN:
                    504:                socantsendmore(so);
                    505:                break;
                    506:
1.27      mycroft   507:        case PRU_RCVD:
                    508:                error = EOPNOTSUPP;
                    509:                break;
                    510:
1.13      mycroft   511:        /*
                    512:         * Ship a packet out.  The appropriate raw output
                    513:         * routine handles any massaging necessary.
                    514:         */
                    515:        case PRU_SEND:
1.28      mycroft   516:                if (control && control->m_len) {
                    517:                        m_freem(control);
                    518:                        m_freem(m);
                    519:                        error = EINVAL;
                    520:                        break;
                    521:                }
                    522:        {
1.27      mycroft   523:                if (nam) {
                    524:                        if ((so->so_state & SS_ISCONNECTED) != 0) {
1.13      mycroft   525:                                error = EISCONN;
1.28      mycroft   526:                                goto die;
1.13      mycroft   527:                        }
1.27      mycroft   528:                        error = rip_connect(inp, nam);
                    529:                        if (error) {
1.28      mycroft   530:                        die:
1.27      mycroft   531:                                m_freem(m);
                    532:                                break;
                    533:                        }
1.13      mycroft   534:                } else {
1.27      mycroft   535:                        if ((so->so_state & SS_ISCONNECTED) == 0) {
1.13      mycroft   536:                                error = ENOTCONN;
1.28      mycroft   537:                                goto die;
1.13      mycroft   538:                        }
                    539:                }
1.27      mycroft   540:                error = rip_output(m, inp);
                    541:                if (nam)
                    542:                        rip_disconnect(inp);
1.28      mycroft   543:        }
1.13      mycroft   544:                break;
                    545:
                    546:        case PRU_SENSE:
                    547:                /*
                    548:                 * stat: don't bother with a blocksize.
                    549:                 */
1.27      mycroft   550:                splx(s);
1.1       cgd       551:                return (0);
1.13      mycroft   552:
                    553:        case PRU_RCVOOB:
1.27      mycroft   554:                error = EOPNOTSUPP;
                    555:                break;
                    556:
1.13      mycroft   557:        case PRU_SENDOOB:
1.28      mycroft   558:                m_freem(control);
1.27      mycroft   559:                m_freem(m);
1.13      mycroft   560:                error = EOPNOTSUPP;
                    561:                break;
                    562:
                    563:        case PRU_SOCKADDR:
                    564:                in_setsockaddr(inp, nam);
                    565:                break;
                    566:
                    567:        case PRU_PEERADDR:
                    568:                in_setpeeraddr(inp, nam);
                    569:                break;
                    570:
                    571:        default:
                    572:                panic("rip_usrreq");
1.1       cgd       573:        }
1.27      mycroft   574:
1.22      pk        575: release:
1.27      mycroft   576:        splx(s);
1.1       cgd       577:        return (error);
                    578: }

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