[BACK]Return to udp_usrreq.c CVS log [TXT][DIR] Up to [cvs.NetBSD.org] / src / sys / netinet

Annotation of src/sys/netinet/udp_usrreq.c, Revision 1.86

1.86    ! itojun      1: /*     $NetBSD: udp_usrreq.c,v 1.85 2001/10/15 09:51:15 itojun Exp $   */
1.48      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: /*
1.44      thorpej    33:  * Copyright (c) 1982, 1986, 1988, 1990, 1993, 1995
1.13      mycroft    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:  *
1.44      thorpej    64:  *     @(#)udp_usrreq.c        8.6 (Berkeley) 5/23/95
1.1       cgd        65:  */
1.50      thorpej    66:
1.77      soda       67: #include "opt_inet.h"
1.50      thorpej    68: #include "opt_ipsec.h"
1.78      thorpej    69: #include "opt_inet_csum.h"
1.64      ws         70: #include "opt_ipkdb.h"
1.1       cgd        71:
1.5       mycroft    72: #include <sys/param.h>
                     73: #include <sys/malloc.h>
                     74: #include <sys/mbuf.h>
                     75: #include <sys/protosw.h>
                     76: #include <sys/socket.h>
                     77: #include <sys/socketvar.h>
1.13      mycroft    78: #include <sys/errno.h>
1.5       mycroft    79: #include <sys/stat.h>
1.27      christos   80: #include <sys/systm.h>
                     81: #include <sys/proc.h>
1.53      itojun     82: #include <sys/domain.h>
1.27      christos   83:
1.67      mrg        84: #include <uvm/uvm_extern.h>
1.27      christos   85: #include <sys/sysctl.h>
1.1       cgd        86:
1.5       mycroft    87: #include <net/if.h>
                     88: #include <net/route.h>
1.1       cgd        89:
1.5       mycroft    90: #include <netinet/in.h>
                     91: #include <netinet/in_systm.h>
1.15      cgd        92: #include <netinet/in_var.h>
1.5       mycroft    93: #include <netinet/ip.h>
                     94: #include <netinet/in_pcb.h>
                     95: #include <netinet/ip_var.h>
                     96: #include <netinet/ip_icmp.h>
                     97: #include <netinet/udp.h>
                     98: #include <netinet/udp_var.h>
1.1       cgd        99:
1.53      itojun    100: #ifdef INET6
                    101: #include <netinet/ip6.h>
                    102: #include <netinet/icmp6.h>
                    103: #include <netinet6/ip6_var.h>
                    104: #include <netinet6/in6_pcb.h>
                    105: #include <netinet6/udp6_var.h>
                    106: #endif
                    107:
                    108: #ifdef PULLDOWN_TEST
                    109: #ifndef INET6
                    110: /* always need ip6.h for IP6_EXTHDR_GET */
                    111: #include <netinet/ip6.h>
                    112: #endif
                    113: #endif
                    114:
1.76      itojun    115: #include "faith.h"
                    116: #if defined(NFAITH) && NFAITH > 0
                    117: #include <net/if_faith.h>
                    118: #endif
                    119:
1.27      christos  120: #include <machine/stdarg.h>
                    121:
1.48      itojun    122: #ifdef IPSEC
                    123: #include <netinet6/ipsec.h>
                    124: #include <netkey/key.h>
                    125: #endif /*IPSEC*/
                    126:
1.64      ws        127: #ifdef IPKDB
                    128: #include <ipkdb/ipkdb.h>
                    129: #endif
                    130:
1.8       mycroft   131: /*
                    132:  * UDP protocol implementation.
                    133:  * Per RFC 768, August, 1980.
                    134:  */
                    135: #ifndef        COMPAT_42
                    136: int    udpcksum = 1;
                    137: #else
                    138: int    udpcksum = 0;           /* XXX */
                    139: #endif
                    140:
1.72      itojun    141: #ifdef INET
1.53      itojun    142: static void udp4_sendup __P((struct mbuf *, int, struct sockaddr *,
                    143:        struct socket *));
                    144: static int udp4_realinput __P((struct sockaddr_in *, struct sockaddr_in *,
                    145:        struct mbuf *, int));
1.72      itojun    146: #endif
1.53      itojun    147: #ifdef INET6
                    148: static void udp6_sendup __P((struct mbuf *, int, struct sockaddr *,
                    149:        struct socket *));
                    150: static int in6_mcmatch __P((struct in6pcb *, struct in6_addr *,
                    151:        struct ifnet *));
                    152: static int udp6_realinput __P((int, struct sockaddr_in6 *,
                    153:        struct sockaddr_in6 *, struct mbuf *, int));
                    154: #endif
1.72      itojun    155: #ifdef INET
1.13      mycroft   156: static void udp_notify __P((struct inpcb *, int));
1.72      itojun    157: #endif
1.7       mycroft   158:
1.26      mycroft   159: #ifndef UDBHASHSIZE
                    160: #define        UDBHASHSIZE     128
                    161: #endif
                    162: int    udbhashsize = UDBHASHSIZE;
                    163:
1.78      thorpej   164: #ifdef UDP_CSUM_COUNTERS
                    165: #include <sys/device.h>
                    166:
                    167: struct evcnt udp_hwcsum_bad = EVCNT_INITIALIZER(EVCNT_TYPE_MISC,
                    168:     NULL, "udp", "hwcsum bad");
                    169: struct evcnt udp_hwcsum_ok = EVCNT_INITIALIZER(EVCNT_TYPE_MISC,
                    170:     NULL, "udp", "hwcsum ok");
                    171: struct evcnt udp_hwcsum_data = EVCNT_INITIALIZER(EVCNT_TYPE_MISC,
                    172:     NULL, "udp", "hwcsum data");
                    173: struct evcnt udp_swcsum = EVCNT_INITIALIZER(EVCNT_TYPE_MISC,
                    174:     NULL, "udp", "swcsum");
                    175:
                    176: #define        UDP_CSUM_COUNTER_INCR(ev)       (ev)->ev_count++
                    177:
                    178: #else
                    179:
                    180: #define        UDP_CSUM_COUNTER_INCR(ev)       /* nothing */
                    181:
                    182: #endif /* UDP_CSUM_COUNTERS */
                    183:
1.7       mycroft   184: void
1.1       cgd       185: udp_init()
                    186: {
1.18      mycroft   187:
1.72      itojun    188: #ifdef INET
1.35      mycroft   189:        in_pcbinit(&udbtable, udbhashsize, udbhashsize);
1.72      itojun    190: #endif
1.78      thorpej   191:
                    192: #ifdef UDP_CSUM_COUNTERS
                    193:        evcnt_attach_static(&udp_hwcsum_bad);
                    194:        evcnt_attach_static(&udp_hwcsum_ok);
                    195:        evcnt_attach_static(&udp_hwcsum_data);
                    196:        evcnt_attach_static(&udp_swcsum);
                    197: #endif /* UDP_CSUM_COUNTERS */
1.1       cgd       198: }
                    199:
1.72      itojun    200: #ifdef INET
1.7       mycroft   201: void
1.27      christos  202: #if __STDC__
                    203: udp_input(struct mbuf *m, ...)
                    204: #else
                    205: udp_input(m, va_alist)
                    206:        struct mbuf *m;
                    207:        va_dcl
                    208: #endif
1.1       cgd       209: {
1.53      itojun    210:        va_list ap;
                    211:        struct sockaddr_in src, dst;
                    212:        struct ip *ip;
                    213:        struct udphdr *uh;
                    214:        int iphlen, proto;
                    215:        int len;
                    216:        int n;
                    217:
                    218:        va_start(ap, m);
                    219:        iphlen = va_arg(ap, int);
                    220:        proto = va_arg(ap, int);
                    221:        va_end(ap);
                    222:
                    223:        udpstat.udps_ipackets++;
                    224:
                    225: #ifndef PULLDOWN_TEST
                    226:        /*
                    227:         * Strip IP options, if any; should skip this,
                    228:         * make available to user, and use on returned packets,
                    229:         * but we don't yet have a way to check the checksum
                    230:         * with options still present.
                    231:         */
                    232:        if (iphlen > sizeof (struct ip)) {
                    233:                ip_stripoptions(m, (struct mbuf *)0);
                    234:                iphlen = sizeof(struct ip);
                    235:        }
                    236: #else
                    237:        /*
                    238:         * we may enable the above code if we save and pass IPv4 options
                    239:         * to the userland.
                    240:         */
                    241: #endif
                    242:
                    243:        /*
                    244:         * Get IP and UDP header together in first mbuf.
                    245:         */
                    246:        ip = mtod(m, struct ip *);
                    247: #ifndef PULLDOWN_TEST
                    248:        if (m->m_len < iphlen + sizeof(struct udphdr)) {
                    249:                if ((m = m_pullup(m, iphlen + sizeof(struct udphdr))) == 0) {
                    250:                        udpstat.udps_hdrops++;
                    251:                        return;
                    252:                }
                    253:                ip = mtod(m, struct ip *);
                    254:        }
                    255:        uh = (struct udphdr *)((caddr_t)ip + iphlen);
                    256: #else
                    257:        IP6_EXTHDR_GET(uh, struct udphdr *, m, iphlen, sizeof(struct udphdr));
                    258:        if (uh == NULL) {
                    259:                udpstat.udps_hdrops++;
                    260:                return;
                    261:        }
                    262: #endif
                    263:
1.57      itojun    264:        /* destination port of 0 is illegal, based on RFC768. */
                    265:        if (uh->uh_dport == 0)
                    266:                goto bad;
                    267:
1.53      itojun    268:        /*
                    269:         * Make mbuf data length reflect UDP length.
                    270:         * If not enough data to reflect UDP length, drop.
                    271:         */
                    272:        len = ntohs((u_int16_t)uh->uh_ulen);
                    273:        if (ip->ip_len != iphlen + len) {
1.70      sommerfe  274:                if (ip->ip_len < iphlen + len || len < sizeof(struct udphdr)) {
1.53      itojun    275:                        udpstat.udps_badlen++;
                    276:                        goto bad;
                    277:                }
                    278:                m_adj(m, iphlen + len - ip->ip_len);
                    279:        }
                    280:
                    281:        /*
                    282:         * Checksum extended UDP header and data.
                    283:         */
                    284:        if (uh->uh_sum) {
1.78      thorpej   285:                switch (m->m_pkthdr.csum_flags &
1.84      thorpej   286:                        ((m->m_pkthdr.rcvif->if_csum_flags_rx & M_CSUM_UDPv4) |
1.78      thorpej   287:                         M_CSUM_TCP_UDP_BAD | M_CSUM_DATA)) {
                    288:                case M_CSUM_UDPv4|M_CSUM_TCP_UDP_BAD:
                    289:                        UDP_CSUM_COUNTER_INCR(&udp_hwcsum_bad);
                    290:                        goto badcsum;
                    291:
                    292:                case M_CSUM_UDPv4|M_CSUM_DATA:
                    293:                        UDP_CSUM_COUNTER_INCR(&udp_hwcsum_data);
                    294:                        if ((m->m_pkthdr.csum_data ^ 0xffff) != 0)
                    295:                                goto badcsum;
                    296:                        break;
                    297:
                    298:                case M_CSUM_UDPv4:
                    299:                        /* Checksum was okay. */
                    300:                        UDP_CSUM_COUNTER_INCR(&udp_hwcsum_ok);
                    301:                        break;
                    302:
                    303:                default:
                    304:                        /* Need to compute it ourselves. */
                    305:                        UDP_CSUM_COUNTER_INCR(&udp_swcsum);
                    306:                        if (in4_cksum(m, IPPROTO_UDP, iphlen, len) != 0)
                    307:                                goto badcsum;
                    308:                        break;
1.53      itojun    309:                }
                    310:        }
                    311:
                    312:        /* construct source and dst sockaddrs. */
                    313:        bzero(&src, sizeof(src));
                    314:        src.sin_family = AF_INET;
                    315:        src.sin_len = sizeof(struct sockaddr_in);
                    316:        bcopy(&ip->ip_src, &src.sin_addr, sizeof(src.sin_addr));
                    317:        src.sin_port = uh->uh_sport;
                    318:        bzero(&dst, sizeof(dst));
                    319:        dst.sin_family = AF_INET;
                    320:        dst.sin_len = sizeof(struct sockaddr_in);
                    321:        bcopy(&ip->ip_dst, &dst.sin_addr, sizeof(dst.sin_addr));
                    322:        dst.sin_port = uh->uh_dport;
                    323:
                    324:        n = udp4_realinput(&src, &dst, m, iphlen);
                    325: #ifdef INET6
                    326:        if (IN_MULTICAST(ip->ip_dst.s_addr) || n == 0) {
                    327:                struct sockaddr_in6 src6, dst6;
                    328:
                    329:                bzero(&src6, sizeof(src6));
                    330:                src6.sin6_family = AF_INET6;
                    331:                src6.sin6_len = sizeof(struct sockaddr_in6);
                    332:                src6.sin6_addr.s6_addr[10] = src6.sin6_addr.s6_addr[11] = 0xff;
                    333:                bcopy(&ip->ip_src, &src6.sin6_addr.s6_addr[12],
                    334:                        sizeof(ip->ip_src));
                    335:                src6.sin6_port = uh->uh_sport;
                    336:                bzero(&dst6, sizeof(dst6));
                    337:                dst6.sin6_family = AF_INET6;
                    338:                dst6.sin6_len = sizeof(struct sockaddr_in6);
                    339:                dst6.sin6_addr.s6_addr[10] = dst6.sin6_addr.s6_addr[11] = 0xff;
                    340:                bcopy(&ip->ip_dst, &dst6.sin6_addr.s6_addr[12],
                    341:                        sizeof(ip->ip_dst));
                    342:                dst6.sin6_port = uh->uh_dport;
                    343:
                    344:                n += udp6_realinput(AF_INET, &src6, &dst6, m, iphlen);
                    345:        }
                    346: #endif
                    347:
                    348:        if (n == 0) {
                    349:                if (m->m_flags & (M_BCAST | M_MCAST)) {
                    350:                        udpstat.udps_noportbcast++;
                    351:                        goto bad;
                    352:                }
1.61      itojun    353:                udpstat.udps_noport++;
1.64      ws        354: #ifdef IPKDB
1.53      itojun    355:                if (checkipkdb(&ip->ip_src, uh->uh_sport, uh->uh_dport,
                    356:                                m, iphlen + sizeof(struct udphdr),
                    357:                                m->m_pkthdr.len - iphlen - sizeof(struct udphdr))) {
                    358:                        /*
                    359:                         * It was a debugger connect packet,
                    360:                         * just drop it now
                    361:                         */
                    362:                        goto bad;
                    363:                }
                    364: #endif
                    365:                icmp_error(m, ICMP_UNREACH, ICMP_UNREACH_PORT, 0, 0);
                    366:                m = NULL;
                    367:        }
                    368:
                    369: bad:
                    370:        if (m)
                    371:                m_freem(m);
1.78      thorpej   372:        return;
                    373:
                    374: badcsum:
                    375:        m_freem(m);
                    376:        udpstat.udps_badsum++;
1.53      itojun    377: }
1.72      itojun    378: #endif
1.53      itojun    379:
                    380: #ifdef INET6
                    381: int
                    382: udp6_input(mp, offp, proto)
                    383:        struct mbuf **mp;
                    384:        int *offp, proto;
                    385: {
                    386:        struct mbuf *m = *mp;
                    387:        int off = *offp;
                    388:        struct sockaddr_in6 src, dst;
                    389:        struct ip6_hdr *ip6;
                    390:        struct udphdr *uh;
                    391:        u_int32_t plen, ulen;
                    392:
1.76      itojun    393: #ifndef PULLDOWN_TEST
                    394:        IP6_EXTHDR_CHECK(m, off, sizeof(struct udphdr), IPPROTO_DONE);
                    395: #endif
                    396:        ip6 = mtod(m, struct ip6_hdr *);
                    397:
1.53      itojun    398: #if defined(NFAITH) && 0 < NFAITH
1.76      itojun    399:        if (faithprefix(&ip6->ip6_dst)) {
                    400:                /* send icmp6 host unreach? */
                    401:                m_freem(m);
                    402:                return IPPROTO_DONE;
1.53      itojun    403:        }
                    404: #endif
                    405:
                    406:        udp6stat.udp6s_ipackets++;
                    407:
                    408:        /* check for jumbogram is done in ip6_input.  we can trust pkthdr.len */
                    409:        plen = m->m_pkthdr.len - off;
                    410: #ifndef PULLDOWN_TEST
                    411:        uh = (struct udphdr *)((caddr_t)ip6 + off);
                    412: #else
                    413:        IP6_EXTHDR_GET(uh, struct udphdr *, m, off, sizeof(struct udphdr));
                    414:        if (uh == NULL) {
                    415:                ip6stat.ip6s_tooshort++;
                    416:                return IPPROTO_DONE;
                    417:        }
                    418: #endif
                    419:        ulen = ntohs((u_short)uh->uh_ulen);
1.69      itojun    420:        /*
                    421:         * RFC2675 section 4: jumbograms will have 0 in the UDP header field,
                    422:         * iff payload length > 0xffff.
                    423:         */
1.53      itojun    424:        if (ulen == 0 && plen > 0xffff)
                    425:                ulen = plen;
                    426:
                    427:        if (plen != ulen) {
                    428:                udp6stat.udp6s_badlen++;
1.54      itojun    429:                goto bad;
                    430:        }
                    431:
1.57      itojun    432:        /* destination port of 0 is illegal, based on RFC768. */
                    433:        if (uh->uh_dport == 0)
                    434:                goto bad;
                    435:
1.54      itojun    436:        /* Be proactive about malicious use of IPv4 mapped address */
                    437:        if (IN6_IS_ADDR_V4MAPPED(&ip6->ip6_src) ||
                    438:            IN6_IS_ADDR_V4MAPPED(&ip6->ip6_dst)) {
                    439:                /* XXX stat */
1.53      itojun    440:                goto bad;
                    441:        }
                    442:
                    443:        /*
                    444:         * Checksum extended UDP header and data.
                    445:         */
                    446:        if (uh->uh_sum == 0)
                    447:                udp6stat.udp6s_nosum++;
                    448:        else if (in6_cksum(m, IPPROTO_UDP, off, ulen) != 0) {
                    449:                udp6stat.udp6s_badsum++;
                    450:                goto bad;
                    451:        }
                    452:
                    453:        /*
                    454:         * Construct source and dst sockaddrs.
                    455:         * Note that ifindex (s6_addr16[1]) is already filled.
                    456:         */
                    457:        bzero(&src, sizeof(src));
                    458:        src.sin6_family = AF_INET6;
                    459:        src.sin6_len = sizeof(struct sockaddr_in6);
1.69      itojun    460:        /* KAME hack: recover scopeid */
                    461:        (void)in6_recoverscope(&src, &ip6->ip6_src, m->m_pkthdr.rcvif);
1.53      itojun    462:        src.sin6_port = uh->uh_sport;
                    463:        bzero(&dst, sizeof(dst));
                    464:        dst.sin6_family = AF_INET6;
                    465:        dst.sin6_len = sizeof(struct sockaddr_in6);
1.69      itojun    466:        /* KAME hack: recover scopeid */
                    467:        (void)in6_recoverscope(&dst, &ip6->ip6_dst, m->m_pkthdr.rcvif);
1.53      itojun    468:        dst.sin6_port = uh->uh_dport;
                    469:
                    470:        if (udp6_realinput(AF_INET6, &src, &dst, m, off) == 0) {
                    471:                if (m->m_flags & M_MCAST) {
                    472:                        udp6stat.udp6s_noportmcast++;
                    473:                        goto bad;
                    474:                }
1.61      itojun    475:                udp6stat.udp6s_noport++;
1.53      itojun    476:                icmp6_error(m, ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOPORT, 0);
                    477:                m = NULL;
                    478:        }
                    479:
                    480: bad:
                    481:        if (m)
                    482:                m_freem(m);
                    483:        return IPPROTO_DONE;
                    484: }
                    485: #endif
                    486:
1.72      itojun    487: #ifdef INET
1.53      itojun    488: static void
                    489: udp4_sendup(m, off, src, so)
                    490:        struct mbuf *m;
                    491:        int off;        /* offset of data portion */
                    492:        struct sockaddr *src;
                    493:        struct socket *so;
                    494: {
                    495:        struct mbuf *opts = NULL;
                    496:        struct mbuf *n;
                    497:        struct inpcb *inp = NULL;
                    498: #ifdef INET6
                    499:        struct in6pcb *in6p = NULL;
                    500: #endif
                    501:
                    502:        if (!so)
                    503:                return;
                    504:        switch (so->so_proto->pr_domain->dom_family) {
                    505:        case AF_INET:
                    506:                inp = sotoinpcb(so);
                    507:                break;
                    508: #ifdef INET6
                    509:        case AF_INET6:
                    510:                in6p = sotoin6pcb(so);
                    511:                break;
                    512: #endif
                    513:        default:
                    514:                return;
                    515:        }
                    516:
                    517: #ifdef IPSEC
                    518:        /* check AH/ESP integrity. */
                    519:        if (so != NULL && ipsec4_in_reject_so(m, so)) {
                    520:                ipsecstat.in_polvio++;
                    521:                return;
                    522:        }
                    523: #endif /*IPSEC*/
                    524:
                    525:        if ((n = m_copy(m, 0, M_COPYALL)) != NULL) {
                    526:                if (inp && (inp->inp_flags & INP_CONTROLOPTS
                    527:                         || so->so_options & SO_TIMESTAMP)) {
                    528:                        struct ip *ip = mtod(n, struct ip *);
                    529:                        ip_savecontrol(inp, &opts, ip, n);
                    530:                }
                    531:
                    532:                m_adj(n, off);
                    533:                if (sbappendaddr(&so->so_rcv, src, n,
                    534:                                opts) == 0) {
                    535:                        m_freem(n);
                    536:                        if (opts)
                    537:                                m_freem(opts);
1.81      enami     538:                        udpstat.udps_fullsock++;
1.53      itojun    539:                } else
                    540:                        sorwakeup(so);
                    541:        }
                    542: }
1.72      itojun    543: #endif
1.53      itojun    544:
                    545: #ifdef INET6
                    546: static void
                    547: udp6_sendup(m, off, src, so)
                    548:        struct mbuf *m;
                    549:        int off;        /* offset of data portion */
                    550:        struct sockaddr *src;
                    551:        struct socket *so;
                    552: {
                    553:        struct mbuf *opts = NULL;
                    554:        struct mbuf *n;
                    555:        struct in6pcb *in6p = NULL;
                    556:
                    557:        if (!so)
                    558:                return;
                    559:        if (so->so_proto->pr_domain->dom_family != AF_INET6)
                    560:                return;
                    561:        in6p = sotoin6pcb(so);
                    562:
                    563: #ifdef IPSEC
                    564:        /* check AH/ESP integrity. */
                    565:        if (so != NULL && ipsec6_in_reject_so(m, so)) {
                    566:                ipsec6stat.in_polvio++;
                    567:                return;
                    568:        }
                    569: #endif /*IPSEC*/
                    570:
                    571:        if ((n = m_copy(m, 0, M_COPYALL)) != NULL) {
                    572:                if (in6p && (in6p->in6p_flags & IN6P_CONTROLOPTS
                    573:                          || in6p->in6p_socket->so_options & SO_TIMESTAMP)) {
                    574:                        struct ip6_hdr *ip6 = mtod(n, struct ip6_hdr *);
                    575:                        ip6_savecontrol(in6p, &opts, ip6, n);
                    576:                }
                    577:
                    578:                m_adj(n, off);
                    579:                if (sbappendaddr(&so->so_rcv, src, n, opts) == 0) {
                    580:                        m_freem(n);
                    581:                        if (opts)
                    582:                                m_freem(opts);
                    583:                        udp6stat.udp6s_fullsock++;
                    584:                } else
                    585:                        sorwakeup(so);
                    586:        }
                    587: }
                    588: #endif
                    589:
1.72      itojun    590: #ifdef INET
1.53      itojun    591: static int
                    592: udp4_realinput(src, dst, m, off)
                    593:        struct sockaddr_in *src;
                    594:        struct sockaddr_in *dst;
                    595:        struct mbuf *m;
                    596:        int off;        /* offset of udphdr */
                    597: {
                    598:        u_int16_t *sport, *dport;
                    599:        int rcvcnt;
                    600:        struct in_addr *src4, *dst4;
                    601:        struct inpcb *inp;
                    602:
                    603:        rcvcnt = 0;
                    604:        off += sizeof(struct udphdr);   /* now, offset of payload */
                    605:
                    606:        if (src->sin_family != AF_INET || dst->sin_family != AF_INET)
                    607:                goto bad;
                    608:
                    609:        src4 = &src->sin_addr;
                    610:        sport = &src->sin_port;
                    611:        dst4 = &dst->sin_addr;
                    612:        dport = &dst->sin_port;
                    613:
1.73      itojun    614:        if (IN_MULTICAST(dst4->s_addr) ||
1.53      itojun    615:            in_broadcast(*dst4, m->m_pkthdr.rcvif)) {
                    616:                struct inpcb *last;
                    617:                /*
                    618:                 * Deliver a multicast or broadcast datagram to *all* sockets
                    619:                 * for which the local and remote addresses and ports match
                    620:                 * those of the incoming datagram.  This allows more than
                    621:                 * one process to receive multi/broadcasts on the same port.
                    622:                 * (This really ought to be done for unicast datagrams as
                    623:                 * well, but that would cause problems with existing
                    624:                 * applications that open both address-specific sockets and
                    625:                 * a wildcard socket listening to the same port -- they would
                    626:                 * end up receiving duplicates of every unicast datagram.
                    627:                 * Those applications open the multiple sockets to overcome an
                    628:                 * inadequacy of the UDP socket interface, but for backwards
                    629:                 * compatibility we avoid the problem here rather than
                    630:                 * fixing the interface.  Maybe 4.5BSD will remedy this?)
                    631:                 */
                    632:
                    633:                /*
                    634:                 * KAME note: usually we drop udpiphdr from mbuf here.
1.71      itojun    635:                 * we need udpiphdr for IPsec processing so we do that later.
1.53      itojun    636:                 */
                    637:                /*
                    638:                 * Locate pcb(s) for datagram.
                    639:                 */
                    640:                for (inp = udbtable.inpt_queue.cqh_first;
                    641:                    inp != (struct inpcb *)&udbtable.inpt_queue;
                    642:                    inp = inp->inp_queue.cqe_next) {
                    643:                        if (inp->inp_lport != *dport)
                    644:                                continue;
                    645:                        if (!in_nullhost(inp->inp_laddr)) {
                    646:                                if (!in_hosteq(inp->inp_laddr, *dst4))
                    647:                                        continue;
                    648:                        }
                    649:                        if (!in_nullhost(inp->inp_faddr)) {
                    650:                                if (!in_hosteq(inp->inp_faddr, *src4) ||
                    651:                                    inp->inp_fport != *sport)
                    652:                                        continue;
                    653:                        }
                    654:
                    655:                        last = inp;
                    656:                        udp4_sendup(m, off, (struct sockaddr *)src,
                    657:                                inp->inp_socket);
                    658:                        rcvcnt++;
                    659:
                    660:                        /*
                    661:                         * Don't look for additional matches if this one does
                    662:                         * not have either the SO_REUSEPORT or SO_REUSEADDR
                    663:                         * socket options set.  This heuristic avoids searching
                    664:                         * through all pcbs in the common case of a non-shared
                    665:                         * port.  It assumes that an application will never
                    666:                         * clear these options after setting them.
                    667:                         */
                    668:                        if ((inp->inp_socket->so_options &
                    669:                            (SO_REUSEPORT|SO_REUSEADDR)) == 0)
                    670:                                break;
                    671:                }
                    672:        } else {
                    673:                /*
                    674:                 * Locate pcb for datagram.
                    675:                 */
                    676:                inp = in_pcblookup_connect(&udbtable, *src4, *sport, *dst4, *dport);
                    677:                if (inp == 0) {
                    678:                        ++udpstat.udps_pcbhashmiss;
                    679:                        inp = in_pcblookup_bind(&udbtable, *dst4, *dport);
1.82      itojun    680:                        if (inp == 0)
1.53      itojun    681:                                return rcvcnt;
                    682:                }
                    683:
                    684:                udp4_sendup(m, off, (struct sockaddr *)src, inp->inp_socket);
                    685:                rcvcnt++;
                    686:        }
                    687:
                    688: bad:
                    689:        return rcvcnt;
                    690: }
1.72      itojun    691: #endif
1.53      itojun    692:
                    693: #ifdef INET6
                    694: static int
                    695: in6_mcmatch(in6p, ia6, ifp)
                    696:        struct in6pcb *in6p;
1.66      augustss  697:        struct in6_addr *ia6;
1.53      itojun    698:        struct ifnet *ifp;
                    699: {
                    700:        struct ip6_moptions *im6o = in6p->in6p_moptions;
                    701:        struct in6_multi_mship *imm;
                    702:
                    703:        if (im6o == NULL)
                    704:                return 0;
                    705:
                    706:        for (imm = im6o->im6o_memberships.lh_first; imm != NULL;
                    707:             imm = imm->i6mm_chain.le_next) {
                    708:                if ((ifp == NULL ||
                    709:                     imm->i6mm_maddr->in6m_ifp == ifp) &&
                    710:                    IN6_ARE_ADDR_EQUAL(&imm->i6mm_maddr->in6m_addr,
                    711:                                       ia6))
                    712:                        return 1;
                    713:        }
                    714:        return 0;
                    715: }
                    716:
                    717: static int
                    718: udp6_realinput(af, src, dst, m, off)
                    719:        int af;         /* af on packet */
                    720:        struct sockaddr_in6 *src;
                    721:        struct sockaddr_in6 *dst;
                    722:        struct mbuf *m;
                    723:        int off;        /* offset of udphdr */
                    724: {
1.79      itojun    725:        u_int16_t sport, dport;
1.53      itojun    726:        int rcvcnt;
1.79      itojun    727:        struct in6_addr src6, dst6;
                    728:        const struct in_addr *dst4;
1.53      itojun    729:        struct in6pcb *in6p;
                    730:
                    731:        rcvcnt = 0;
                    732:        off += sizeof(struct udphdr);   /* now, offset of payload */
                    733:
                    734:        if (af != AF_INET && af != AF_INET6)
                    735:                goto bad;
                    736:        if (src->sin6_family != AF_INET6 || dst->sin6_family != AF_INET6)
                    737:                goto bad;
                    738:
1.79      itojun    739:        in6_embedscope(&src6, src, NULL, NULL);
                    740:        sport = src->sin6_port;
                    741:        in6_embedscope(&dst6, dst, NULL, NULL);
                    742:        dport = dst->sin6_port;
1.74      itojun    743:        dst4 = (struct in_addr *)&dst->sin6_addr.s6_addr32[12];
1.53      itojun    744:
1.79      itojun    745:        if (IN6_IS_ADDR_MULTICAST(&dst6) ||
                    746:            (af == AF_INET && IN_MULTICAST(dst4->s_addr))) {
1.53      itojun    747:                struct in6pcb *last;
                    748:                /*
                    749:                 * Deliver a multicast or broadcast datagram to *all* sockets
                    750:                 * for which the local and remote addresses and ports match
                    751:                 * those of the incoming datagram.  This allows more than
                    752:                 * one process to receive multi/broadcasts on the same port.
                    753:                 * (This really ought to be done for unicast datagrams as
                    754:                 * well, but that would cause problems with existing
                    755:                 * applications that open both address-specific sockets and
                    756:                 * a wildcard socket listening to the same port -- they would
                    757:                 * end up receiving duplicates of every unicast datagram.
                    758:                 * Those applications open the multiple sockets to overcome an
                    759:                 * inadequacy of the UDP socket interface, but for backwards
                    760:                 * compatibility we avoid the problem here rather than
                    761:                 * fixing the interface.  Maybe 4.5BSD will remedy this?)
                    762:                 */
                    763:
                    764:                /*
                    765:                 * KAME note: usually we drop udpiphdr from mbuf here.
1.71      itojun    766:                 * we need udpiphdr for IPsec processing so we do that later.
1.53      itojun    767:                 */
                    768:                /*
                    769:                 * Locate pcb(s) for datagram.
                    770:                 */
                    771:                for (in6p = udb6.in6p_next; in6p != &udb6;
                    772:                     in6p = in6p->in6p_next) {
1.79      itojun    773:                        if (in6p->in6p_lport != dport)
1.53      itojun    774:                                continue;
                    775:                        if (!IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_laddr)) {
1.79      itojun    776:                                if (!IN6_ARE_ADDR_EQUAL(&in6p->in6p_laddr, &dst6) &&
                    777:                                    !in6_mcmatch(in6p, &dst6, m->m_pkthdr.rcvif))
1.53      itojun    778:                                        continue;
                    779:                        }
1.55      itojun    780:                        else {
1.79      itojun    781:                                if (IN6_IS_ADDR_V4MAPPED(&dst6) &&
1.85      itojun    782:                                    (in6p->in6p_flags & IN6P_IPV6_V6ONLY))
1.55      itojun    783:                                        continue;
                    784:                        }
1.53      itojun    785:                        if (!IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_faddr)) {
1.79      itojun    786:                                if (!IN6_ARE_ADDR_EQUAL(&in6p->in6p_faddr,
                    787:                                    &src6) || in6p->in6p_fport != sport)
1.53      itojun    788:                                        continue;
                    789:                        }
1.55      itojun    790:                        else {
1.79      itojun    791:                                if (IN6_IS_ADDR_V4MAPPED(&src6) &&
1.85      itojun    792:                                    (in6p->in6p_flags & IN6P_IPV6_V6ONLY))
1.55      itojun    793:                                        continue;
                    794:                        }
1.53      itojun    795:
                    796:                        last = in6p;
                    797:                        udp6_sendup(m, off, (struct sockaddr *)src,
                    798:                                in6p->in6p_socket);
                    799:                        rcvcnt++;
                    800:
                    801:                        /*
                    802:                         * Don't look for additional matches if this one does
                    803:                         * not have either the SO_REUSEPORT or SO_REUSEADDR
                    804:                         * socket options set.  This heuristic avoids searching
                    805:                         * through all pcbs in the common case of a non-shared
                    806:                         * port.  It assumes that an application will never
                    807:                         * clear these options after setting them.
                    808:                         */
                    809:                        if ((in6p->in6p_socket->so_options &
                    810:                            (SO_REUSEPORT|SO_REUSEADDR)) == 0)
                    811:                                break;
                    812:                }
                    813:        } else {
                    814:                /*
                    815:                 * Locate pcb for datagram.
                    816:                 */
1.79      itojun    817:                in6p = in6_pcblookup_connect(&udb6, &src6, sport,
                    818:                    &dst6, dport, 0);
1.53      itojun    819:                if (in6p == 0) {
                    820:                        ++udpstat.udps_pcbhashmiss;
1.79      itojun    821:                        in6p = in6_pcblookup_bind(&udb6, &dst6, dport, 0);
1.82      itojun    822:                        if (in6p == 0)
1.53      itojun    823:                                return rcvcnt;
                    824:                }
                    825:
                    826:                udp6_sendup(m, off, (struct sockaddr *)src, in6p->in6p_socket);
                    827:                rcvcnt++;
                    828:        }
                    829:
                    830: bad:
                    831:        return rcvcnt;
                    832: }
                    833: #endif
1.1       cgd       834:
1.72      itojun    835: #ifdef INET
1.1       cgd       836: /*
                    837:  * Notify a udp user of an asynchronous error;
                    838:  * just wake up so that he can collect error status.
                    839:  */
1.7       mycroft   840: static void
1.1       cgd       841: udp_notify(inp, errno)
1.66      augustss  842:        struct inpcb *inp;
1.7       mycroft   843:        int errno;
1.1       cgd       844: {
1.34      mycroft   845:
1.1       cgd       846:        inp->inp_socket->so_error = errno;
                    847:        sorwakeup(inp->inp_socket);
                    848:        sowwakeup(inp->inp_socket);
                    849: }
                    850:
1.27      christos  851: void *
                    852: udp_ctlinput(cmd, sa, v)
1.1       cgd       853:        int cmd;
                    854:        struct sockaddr *sa;
1.27      christos  855:        void *v;
1.1       cgd       856: {
1.66      augustss  857:        struct ip *ip = v;
                    858:        struct udphdr *uh;
1.18      mycroft   859:        void (*notify) __P((struct inpcb *, int)) = udp_notify;
1.21      mycroft   860:        int errno;
1.1       cgd       861:
1.53      itojun    862:        if (sa->sa_family != AF_INET
                    863:         || sa->sa_len != sizeof(struct sockaddr_in))
1.51      itojun    864:                return NULL;
1.20      mycroft   865:        if ((unsigned)cmd >= PRC_NCMDS)
1.27      christos  866:                return NULL;
1.20      mycroft   867:        errno = inetctlerrmap[cmd];
1.18      mycroft   868:        if (PRC_IS_REDIRECT(cmd))
1.19      mycroft   869:                notify = in_rtchange, ip = 0;
1.18      mycroft   870:        else if (cmd == PRC_HOSTDEAD)
1.19      mycroft   871:                ip = 0;
1.23      cgd       872:        else if (errno == 0)
1.27      christos  873:                return NULL;
1.19      mycroft   874:        if (ip) {
1.1       cgd       875:                uh = (struct udphdr *)((caddr_t)ip + (ip->ip_hl << 2));
1.34      mycroft   876:                in_pcbnotify(&udbtable, satosin(sa)->sin_addr, uh->uh_dport,
                    877:                    ip->ip_src, uh->uh_sport, errno, notify);
1.53      itojun    878:
                    879:                /* XXX mapped address case */
1.19      mycroft   880:        } else
1.34      mycroft   881:                in_pcbnotifyall(&udbtable, satosin(sa)->sin_addr, errno,
                    882:                    notify);
1.27      christos  883:        return NULL;
1.1       cgd       884: }
                    885:
1.7       mycroft   886: int
1.27      christos  887: #if __STDC__
                    888: udp_output(struct mbuf *m, ...)
                    889: #else
                    890: udp_output(m, va_alist)
                    891:        struct mbuf *m;
                    892:        va_dcl
                    893: #endif
                    894: {
1.66      augustss  895:        struct inpcb *inp;
                    896:        struct udpiphdr *ui;
                    897:        int len = m->m_pkthdr.len;
1.31      mycroft   898:        int error = 0;
1.27      christos  899:        va_list ap;
                    900:
                    901:        va_start(ap, m);
                    902:        inp = va_arg(ap, struct inpcb *);
                    903:        va_end(ap);
1.1       cgd       904:
                    905:        /*
                    906:         * Calculate data length and get a mbuf
                    907:         * for UDP and IP headers.
                    908:         */
1.13      mycroft   909:        M_PREPEND(m, sizeof(struct udpiphdr), M_DONTWAIT);
                    910:        if (m == 0) {
                    911:                error = ENOBUFS;
1.39      thorpej   912:                goto release;
                    913:        }
                    914:
                    915:        /*
                    916:         * Compute the packet length of the IP header, and
                    917:         * punt if the length looks bogus.
                    918:         */
                    919:        if ((len + sizeof(struct udpiphdr)) > IP_MAXPACKET) {
                    920:                error = EMSGSIZE;
1.13      mycroft   921:                goto release;
                    922:        }
1.1       cgd       923:
                    924:        /*
                    925:         * Fill in mbuf with extended UDP header
                    926:         * and addresses and length put into network format.
                    927:         */
                    928:        ui = mtod(m, struct udpiphdr *);
                    929:        ui->ui_pr = IPPROTO_UDP;
                    930:        ui->ui_src = inp->inp_laddr;
                    931:        ui->ui_dst = inp->inp_faddr;
                    932:        ui->ui_sport = inp->inp_lport;
                    933:        ui->ui_dport = inp->inp_fport;
1.78      thorpej   934:        ui->ui_ulen = htons((u_int16_t)len + sizeof(struct udphdr));
1.1       cgd       935:
                    936:        /*
1.78      thorpej   937:         * Set up checksum and output datagram.
1.1       cgd       938:         */
                    939:        if (udpcksum) {
1.78      thorpej   940:                /*
                    941:                 * XXX Cache pseudo-header checksum part for
                    942:                 * XXX "connected" UDP sockets.
                    943:                 */
                    944:                ui->ui_sum = in_cksum_phdr(ui->ui_src.s_addr,
                    945:                    ui->ui_dst.s_addr, htons((u_int16_t)len +
                    946:                    sizeof(struct udphdr) + IPPROTO_UDP));
                    947:                m->m_pkthdr.csum_flags = M_CSUM_UDPv4;
                    948:                m->m_pkthdr.csum_data = offsetof(struct udphdr, uh_sum);
                    949:        } else
                    950:                ui->ui_sum = 0;
1.1       cgd       951:        ((struct ip *)ui)->ip_len = sizeof (struct udpiphdr) + len;
                    952:        ((struct ip *)ui)->ip_ttl = inp->inp_ip.ip_ttl; /* XXX */
                    953:        ((struct ip *)ui)->ip_tos = inp->inp_ip.ip_tos; /* XXX */
                    954:        udpstat.udps_opackets++;
1.48      itojun    955:
                    956: #ifdef IPSEC
1.75      itojun    957:        if (ipsec_setsocket(m, inp->inp_socket) != 0) {
                    958:                error = ENOBUFS;
                    959:                goto release;
                    960:        }
1.48      itojun    961: #endif /*IPSEC*/
                    962:
1.31      mycroft   963:        return (ip_output(m, inp->inp_options, &inp->inp_route,
1.12      mycroft   964:            inp->inp_socket->so_options & (SO_DONTROUTE | SO_BROADCAST),
1.31      mycroft   965:            inp->inp_moptions));
1.1       cgd       966:
                    967: release:
                    968:        m_freem(m);
                    969:        return (error);
                    970: }
                    971:
1.42      thorpej   972: int    udp_sendspace = 9216;           /* really max datagram size */
                    973: int    udp_recvspace = 40 * (1024 + sizeof(struct sockaddr_in));
1.1       cgd       974:                                        /* 40 1K datagrams */
                    975:
                    976: /*ARGSUSED*/
1.7       mycroft   977: int
1.31      mycroft   978: udp_usrreq(so, req, m, nam, control, p)
1.1       cgd       979:        struct socket *so;
                    980:        int req;
1.31      mycroft   981:        struct mbuf *m, *nam, *control;
1.30      mycroft   982:        struct proc *p;
1.1       cgd       983: {
1.66      augustss  984:        struct inpcb *inp;
1.1       cgd       985:        int s;
1.66      augustss  986:        int error = 0;
1.1       cgd       987:
                    988:        if (req == PRU_CONTROL)
1.31      mycroft   989:                return (in_control(so, (long)m, (caddr_t)nam,
1.30      mycroft   990:                    (struct ifnet *)control, p));
1.59      thorpej   991:
1.60      thorpej   992:        if (req == PRU_PURGEIF) {
1.80      itojun    993:                in_pcbpurgeif0(&udbtable, (struct ifnet *)control);
1.60      thorpej   994:                in_purgeif((struct ifnet *)control);
                    995:                in_pcbpurgeif(&udbtable, (struct ifnet *)control);
1.59      thorpej   996:                return (0);
                    997:        }
1.31      mycroft   998:
                    999:        s = splsoftnet();
                   1000:        inp = sotoinpcb(so);
1.32      mycroft  1001: #ifdef DIAGNOSTIC
                   1002:        if (req != PRU_SEND && req != PRU_SENDOOB && control)
                   1003:                panic("udp_usrreq: unexpected control mbuf");
                   1004: #endif
1.31      mycroft  1005:        if (inp == 0 && req != PRU_ATTACH) {
                   1006:                error = EINVAL;
                   1007:                goto release;
                   1008:        }
                   1009:
1.1       cgd      1010:        /*
                   1011:         * Note: need to block udp_input while changing
                   1012:         * the udp pcb queue and/or pcb addresses.
                   1013:         */
                   1014:        switch (req) {
                   1015:
                   1016:        case PRU_ATTACH:
1.31      mycroft  1017:                if (inp != 0) {
                   1018:                        error = EISCONN;
1.1       cgd      1019:                        break;
                   1020:                }
1.31      mycroft  1021:                if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) {
                   1022:                        error = soreserve(so, udp_sendspace, udp_recvspace);
                   1023:                        if (error)
                   1024:                                break;
                   1025:                }
1.18      mycroft  1026:                error = in_pcballoc(so, &udbtable);
1.1       cgd      1027:                if (error)
                   1028:                        break;
1.31      mycroft  1029:                inp = sotoinpcb(so);
                   1030:                inp->inp_ip.ip_ttl = ip_defttl;
1.1       cgd      1031:                break;
                   1032:
                   1033:        case PRU_DETACH:
1.31      mycroft  1034:                in_pcbdetach(inp);
1.1       cgd      1035:                break;
                   1036:
                   1037:        case PRU_BIND:
1.31      mycroft  1038:                error = in_pcbbind(inp, nam, p);
1.1       cgd      1039:                break;
                   1040:
                   1041:        case PRU_LISTEN:
                   1042:                error = EOPNOTSUPP;
                   1043:                break;
                   1044:
                   1045:        case PRU_CONNECT:
1.31      mycroft  1046:                error = in_pcbconnect(inp, nam);
                   1047:                if (error)
1.1       cgd      1048:                        break;
1.31      mycroft  1049:                soisconnected(so);
1.1       cgd      1050:                break;
                   1051:
                   1052:        case PRU_CONNECT2:
                   1053:                error = EOPNOTSUPP;
                   1054:                break;
                   1055:
                   1056:        case PRU_DISCONNECT:
1.31      mycroft  1057:                /*soisdisconnected(so);*/
                   1058:                so->so_state &= ~SS_ISCONNECTED;        /* XXX */
1.1       cgd      1059:                in_pcbdisconnect(inp);
1.34      mycroft  1060:                inp->inp_laddr = zeroin_addr;           /* XXX */
1.35      mycroft  1061:                in_pcbstate(inp, INP_BOUND);            /* XXX */
1.1       cgd      1062:                break;
                   1063:
                   1064:        case PRU_SHUTDOWN:
                   1065:                socantsendmore(so);
                   1066:                break;
                   1067:
1.31      mycroft  1068:        case PRU_RCVD:
                   1069:                error = EOPNOTSUPP;
1.1       cgd      1070:                break;
                   1071:
1.31      mycroft  1072:        case PRU_SEND:
1.32      mycroft  1073:                if (control && control->m_len) {
                   1074:                        m_freem(control);
                   1075:                        m_freem(m);
                   1076:                        error = EINVAL;
                   1077:                        break;
                   1078:                }
1.31      mycroft  1079:        {
1.35      mycroft  1080:                struct in_addr laddr;                   /* XXX */
1.1       cgd      1081:
1.31      mycroft  1082:                if (nam) {
1.35      mycroft  1083:                        laddr = inp->inp_laddr;         /* XXX */
1.31      mycroft  1084:                        if ((so->so_state & SS_ISCONNECTED) != 0) {
                   1085:                                error = EISCONN;
1.32      mycroft  1086:                                goto die;
1.31      mycroft  1087:                        }
                   1088:                        error = in_pcbconnect(inp, nam);
1.32      mycroft  1089:                        if (error) {
                   1090:                        die:
                   1091:                                m_freem(m);
1.31      mycroft  1092:                                break;
1.32      mycroft  1093:                        }
1.31      mycroft  1094:                } else {
                   1095:                        if ((so->so_state & SS_ISCONNECTED) == 0) {
                   1096:                                error = ENOTCONN;
1.32      mycroft  1097:                                goto die;
1.31      mycroft  1098:                        }
                   1099:                }
1.33      mycroft  1100:                error = udp_output(m, inp);
1.31      mycroft  1101:                if (nam) {
                   1102:                        in_pcbdisconnect(inp);
1.35      mycroft  1103:                        inp->inp_laddr = laddr;         /* XXX */
                   1104:                        in_pcbstate(inp, INP_BOUND);    /* XXX */
1.31      mycroft  1105:                }
                   1106:        }
1.1       cgd      1107:                break;
                   1108:
                   1109:        case PRU_SENSE:
                   1110:                /*
                   1111:                 * stat: don't bother with a blocksize.
                   1112:                 */
1.31      mycroft  1113:                splx(s);
1.1       cgd      1114:                return (0);
                   1115:
1.31      mycroft  1116:        case PRU_RCVOOB:
                   1117:                error =  EOPNOTSUPP;
                   1118:                break;
                   1119:
1.1       cgd      1120:        case PRU_SENDOOB:
1.32      mycroft  1121:                m_freem(control);
1.31      mycroft  1122:                m_freem(m);
1.1       cgd      1123:                error =  EOPNOTSUPP;
                   1124:                break;
                   1125:
1.31      mycroft  1126:        case PRU_SOCKADDR:
                   1127:                in_setsockaddr(inp, nam);
                   1128:                break;
                   1129:
                   1130:        case PRU_PEERADDR:
                   1131:                in_setpeeraddr(inp, nam);
                   1132:                break;
1.1       cgd      1133:
                   1134:        default:
                   1135:                panic("udp_usrreq");
                   1136:        }
                   1137:
                   1138: release:
1.31      mycroft  1139:        splx(s);
1.1       cgd      1140:        return (error);
1.13      mycroft  1141: }
                   1142:
                   1143: /*
                   1144:  * Sysctl for udp variables.
                   1145:  */
1.27      christos 1146: int
1.13      mycroft  1147: udp_sysctl(name, namelen, oldp, oldlenp, newp, newlen)
                   1148:        int *name;
                   1149:        u_int namelen;
                   1150:        void *oldp;
                   1151:        size_t *oldlenp;
                   1152:        void *newp;
                   1153:        size_t newlen;
                   1154: {
                   1155:        /* All sysctl names at this level are terminal. */
                   1156:        if (namelen != 1)
                   1157:                return (ENOTDIR);
                   1158:
                   1159:        switch (name[0]) {
                   1160:        case UDPCTL_CHECKSUM:
                   1161:                return (sysctl_int(oldp, oldlenp, newp, newlen, &udpcksum));
1.42      thorpej  1162:        case UDPCTL_SENDSPACE:
                   1163:                return (sysctl_int(oldp, oldlenp, newp, newlen,
                   1164:                    &udp_sendspace));
                   1165:        case UDPCTL_RECVSPACE:
                   1166:                return (sysctl_int(oldp, oldlenp, newp, newlen,
                   1167:                    &udp_recvspace));
1.13      mycroft  1168:        default:
                   1169:                return (ENOPROTOOPT);
                   1170:        }
                   1171:        /* NOTREACHED */
1.1       cgd      1172: }
1.72      itojun   1173: #endif

CVSweb <webmaster@jp.NetBSD.org>