The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]

FreeBSD/Linux Kernel Cross Reference
sys/netiso/cltp_usrreq.c

Version: -  FREEBSD  -  FREEBSD-12-STABLE  -  FREEBSD-12-0  -  FREEBSD-11-STABLE  -  FREEBSD-11-2  -  FREEBSD-11-1  -  FREEBSD-11-0  -  FREEBSD-10-STABLE  -  FREEBSD-10-4  -  FREEBSD-10-3  -  FREEBSD-10-2  -  FREEBSD-10-1  -  FREEBSD-10-0  -  FREEBSD-9-STABLE  -  FREEBSD-9-3  -  FREEBSD-9-2  -  FREEBSD-9-1  -  FREEBSD-9-0  -  FREEBSD-8-STABLE  -  FREEBSD-8-4  -  FREEBSD-8-3  -  FREEBSD-8-2  -  FREEBSD-8-1  -  FREEBSD-8-0  -  FREEBSD-7-STABLE  -  FREEBSD-7-4  -  FREEBSD-7-3  -  FREEBSD-7-2  -  FREEBSD-7-1  -  FREEBSD-7-0  -  FREEBSD-6-STABLE  -  FREEBSD-6-4  -  FREEBSD-6-3  -  FREEBSD-6-2  -  FREEBSD-6-1  -  FREEBSD-6-0  -  FREEBSD-5-STABLE  -  FREEBSD-5-5  -  FREEBSD-5-4  -  FREEBSD-5-3  -  FREEBSD-5-2  -  FREEBSD-5-1  -  FREEBSD-5-0  -  FREEBSD-4-STABLE  -  FREEBSD-3-STABLE  -  FREEBSD22  -  linux-2.6  -  linux-2.4.22  -  MK83  -  MK84  -  PLAN9  -  DFBSD  -  NETBSD  -  NETBSD5  -  NETBSD4  -  NETBSD3  -  NETBSD20  -  OPENBSD  -  xnu-517  -  xnu-792  -  xnu-792.6.70  -  xnu-1228  -  xnu-1456.1.26  -  xnu-1699.24.8  -  xnu-2050.18.24  -  OPENSOLARIS  -  minix-3-1-1 
SearchContext: -  none  -  3  -  10 

    1 /*      $NetBSD: cltp_usrreq.c,v 1.34 2008/04/28 13:24:38 ad Exp $      */
    2 
    3 /*
    4  * Copyright (c) 1989, 1993
    5  *      The Regents of the University of California.  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 University 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 REGENTS 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 REGENTS 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  *
   31  *      @(#)cltp_usrreq.c       8.1 (Berkeley) 6/10/93
   32  */
   33 
   34 #include <sys/cdefs.h>
   35 __KERNEL_RCSID(0, "$NetBSD: cltp_usrreq.c,v 1.34 2008/04/28 13:24:38 ad Exp $");
   36 
   37 #ifndef CLTPOVAL_SRC            /* XXX -- till files gets changed */
   38 #include <sys/param.h>
   39 #include <sys/malloc.h>
   40 #include <sys/mbuf.h>
   41 #include <sys/protosw.h>
   42 #include <sys/socket.h>
   43 #include <sys/socketvar.h>
   44 #include <sys/errno.h>
   45 #include <sys/stat.h>
   46 #include <sys/systm.h>
   47 #include <sys/proc.h>
   48 
   49 #include <net/if.h>
   50 #include <net/route.h>
   51 
   52 #include <netiso/argo_debug.h>
   53 #include <netiso/iso.h>
   54 #include <netiso/iso_pcb.h>
   55 #include <netiso/iso_var.h>
   56 #include <netiso/clnp.h>
   57 #include <netiso/cltp_var.h>
   58 #include <netiso/tp_param.h>
   59 #include <netiso/tp_var.h>
   60 
   61 #include <machine/stdarg.h>
   62 #endif
   63 
   64 
   65 /*
   66  * CLTP protocol implementation.
   67  * Per ISO 8602, December, 1987.
   68  */
   69 void
   70 cltp_init()
   71 {
   72 
   73         cltb.isop_next = cltb.isop_prev = &cltb;
   74 }
   75 
   76 int cltp_cksum = 1;
   77 struct isopcb   cltb;
   78 struct cltpstat cltpstat;
   79 
   80 
   81 /* ARGUSED */
   82 void
   83 cltp_input(struct mbuf *m0, ...)
   84 {
   85         struct sockaddr *srcsa, *dstsa;
   86         u_int           cons_channel;
   87         struct isopcb *isop;
   88         struct mbuf *m = m0;
   89         struct mbuf *m_src = 0;
   90         u_char *up = mtod(m, u_char *);
   91         struct sockaddr_iso *src;
   92         int             len, hdrlen = *up + 1, dlen = 0;
   93         u_char         *uplim = up + hdrlen;
   94         void *        dtsap = NULL;
   95         va_list ap;
   96 
   97         va_start(ap, m0);
   98         srcsa = va_arg(ap, struct sockaddr *);
   99         dstsa = va_arg(ap, struct sockaddr *);
  100         cons_channel = va_arg(ap, int);
  101         va_end(ap);
  102         src = satosiso(srcsa);
  103 
  104         for (len = 0; m; m = m->m_next)
  105                 len += m->m_len;
  106         up += 2;                /* skip header */
  107         while (up < uplim)
  108                 switch (*up) {  /* process options */
  109                 case CLTPOVAL_SRC:
  110                         src->siso_tlen = up[1];
  111                         src->siso_len = up[1] +
  112                             ((const char *)TSEL(src) - (const char *)src);
  113                         if (src->siso_len < sizeof(*src))
  114                                 src->siso_len = sizeof(*src);
  115                         else if (src->siso_len > sizeof(*src)) {
  116                                 MGET(m_src, M_DONTWAIT, MT_SONAME);
  117                                 if (m_src == 0)
  118                                         goto bad;
  119                                 m_src->m_len = src->siso_len;
  120                                 src = mtod(m_src, struct sockaddr_iso *);
  121                                 bcopy((void *) srcsa, (void *) src, srcsa->sa_len);
  122                         }
  123                         memcpy(WRITABLE_TSEL(src), (char *)up + 2, up[1]);
  124                         up += 2 + src->siso_tlen;
  125                         continue;
  126 
  127                 case CLTPOVAL_DST:
  128                         dtsap = 2 + (char *)up;
  129                         dlen = up[1];
  130                         up += 2 + dlen;
  131                         continue;
  132 
  133                 case CLTPOVAL_CSM:
  134                         if (iso_check_csum(m0, len)) {
  135                                 cltpstat.cltps_badsum++;
  136                                 goto bad;
  137                         }
  138                         up += 4;
  139                         continue;
  140 
  141                 default:
  142                         printf("clts: unknown option (%x)\n", up[0]);
  143                         cltpstat.cltps_hdrops++;
  144                         goto bad;
  145                 }
  146         if (dlen == 0 || src->siso_tlen == 0)
  147                 goto bad;
  148         for (isop = cltb.isop_next;; isop = isop->isop_next) {
  149                 if (isop == &cltb) {
  150                         cltpstat.cltps_noport++;
  151                         goto bad;
  152                 }
  153                 if (isop->isop_laddr &&
  154                     bcmp(TSEL(isop->isop_laddr), dtsap, dlen) == 0)
  155                         break;
  156         }
  157         m = m0;
  158         m->m_len -= hdrlen;
  159         m->m_data += hdrlen;
  160         if (sbappendaddr(&isop->isop_socket->so_rcv, sisotosa(src), m,
  161                          (struct mbuf *) 0) == 0)
  162                 goto bad;
  163         cltpstat.cltps_ipackets++;
  164         sorwakeup(isop->isop_socket);
  165         m0 = 0;
  166 bad:
  167         if (src != satosiso(srcsa))
  168                 m_freem(m_src);
  169         if (m0)
  170                 m_freem(m0);
  171 }
  172 
  173 /*
  174  * Notify a cltp user of an asynchronous error;
  175  * just wake up so that he can collect error status.
  176  */
  177 void
  178 cltp_notify(isop)
  179         struct isopcb *isop;
  180 {
  181 
  182         sorwakeup(isop->isop_socket);
  183         sowwakeup(isop->isop_socket);
  184 }
  185 
  186 void
  187 cltp_ctlinput(
  188     int cmd,
  189     const struct sockaddr *sa,
  190     void *dummy)
  191 {
  192         const struct sockaddr_iso *siso;
  193 
  194         if ((unsigned)cmd >= PRC_NCMDS)
  195                 return;
  196         if (sa->sa_family != AF_ISO && sa->sa_family != AF_CCITT)
  197                 return;
  198         siso = satocsiso(sa);
  199         if (siso == 0 || siso->siso_nlen == 0)
  200                 return;
  201 
  202         switch (cmd) {
  203         case PRC_ROUTEDEAD:
  204         case PRC_REDIRECT_NET:
  205         case PRC_REDIRECT_HOST:
  206         case PRC_REDIRECT_TOSNET:
  207         case PRC_REDIRECT_TOSHOST:
  208                 iso_pcbnotify(&cltb, siso,
  209                               (int) isoctlerrmap[cmd], iso_rtchange);
  210                 break;
  211 
  212         default:
  213                 if (isoctlerrmap[cmd] == 0)
  214                         return; /* XXX */
  215                 iso_pcbnotify(&cltb, siso, (int) isoctlerrmap[cmd],
  216                               cltp_notify);
  217         }
  218 }
  219 
  220 int
  221 cltp_output(struct mbuf *m, ...)
  222 {
  223         struct isopcb *isop;
  224         int    len;
  225         struct sockaddr_iso *siso;
  226         int             hdrlen, error = 0, docsum;
  227         u_char *up;
  228         va_list ap;
  229 
  230         va_start(ap, m);
  231         isop = va_arg(ap, struct isopcb *);
  232         va_end(ap);
  233 
  234         if (isop->isop_laddr == 0 || isop->isop_faddr == 0) {
  235                 error = ENOTCONN;
  236                 goto bad;
  237         }
  238         /*
  239          * Calculate data length and get a mbuf for CLTP header.
  240          */
  241         hdrlen = 2 + 2 + isop->isop_laddr->siso_tlen
  242                 + 2 + isop->isop_faddr->siso_tlen;
  243         docsum = /* isop->isop_flags & CLNP_NO_CKSUM */ cltp_cksum;
  244         if (docsum)
  245                 hdrlen += 4;
  246         M_PREPEND(m, hdrlen, M_WAIT);
  247         len = m->m_pkthdr.len;
  248         /*
  249          * Fill in mbuf with extended CLTP header
  250          */
  251         up = mtod(m, u_char *);
  252         up[0] = hdrlen - 1;
  253         up[1] = UD_TPDU_type;
  254         up[2] = CLTPOVAL_SRC;
  255         up[3] = (siso = isop->isop_laddr)->siso_tlen;
  256         up += 4;
  257         bcopy(TSEL(siso), (void *) up, siso->siso_tlen);
  258         up += siso->siso_tlen;
  259         up[0] = CLTPOVAL_DST;
  260         up[1] = (siso = isop->isop_faddr)->siso_tlen;
  261         up += 2;
  262         bcopy(TSEL(siso), (void *) up, siso->siso_tlen);
  263         /*
  264          * Stuff checksum and output datagram.
  265          */
  266         if (docsum) {
  267                 up += siso->siso_tlen;
  268                 up[0] = CLTPOVAL_CSM;
  269                 up[1] = 2;
  270                 iso_gen_csum(m, 2 + up - mtod(m, u_char *), len);
  271         }
  272         cltpstat.cltps_opackets++;
  273         return (tpclnp_output(m, len, isop, !docsum));
  274 bad:
  275         m_freem(m);
  276         return (error);
  277 }
  278 
  279 u_long          cltp_sendspace = 9216;  /* really max datagram size */
  280 u_long          cltp_recvspace = 40 * (1024 + sizeof(struct sockaddr_iso));
  281 /* 40 1K datagrams */
  282 
  283 
  284 /* ARGSUSED */
  285 int
  286 cltp_usrreq(so, req, m, nam, control, l)
  287         struct socket *so;
  288         int req;
  289         struct mbuf *m, *nam, *control;
  290         struct lwp *l;
  291 {
  292         struct isopcb *isop;
  293         int s;
  294         int error = 0;
  295 
  296         if (req == PRU_CONTROL)
  297                 return (iso_control(so, (long)m, (void *)nam,
  298                     (struct ifnet *)control, l));
  299 
  300         if (req == PRU_PURGEIF) {
  301                 mutex_enter(softnet_lock);
  302                 iso_purgeif((struct ifnet *)control);
  303                 mutex_exit(softnet_lock);
  304                 return (0);
  305         }
  306 
  307         s = splsoftnet();
  308         isop = sotoisopcb(so);
  309 #ifdef DIAGNOSTIC
  310         if (req != PRU_SEND && req != PRU_SENDOOB && control)
  311                 panic("cltp_usrreq: unexpected control mbuf");
  312 #endif
  313         if (isop == 0 && req != PRU_ATTACH) {
  314                 error = EINVAL;
  315                 goto release;
  316         }
  317 
  318         switch (req) {
  319 
  320         case PRU_ATTACH:
  321                 sosetlock(so);
  322                 if (isop != 0) {
  323                         error = EISCONN;
  324                         break;
  325                 }
  326                 if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) {
  327                         error = soreserve(so, cltp_sendspace, cltp_recvspace);
  328                         if (error)
  329                                 break;
  330                 }
  331                 error = iso_pcballoc(so, &cltb);
  332                 if (error)
  333                         break;
  334                 break;
  335 
  336         case PRU_DETACH:
  337                 iso_pcbdetach(isop);
  338                 break;
  339 
  340         case PRU_BIND:
  341                 error = iso_pcbbind(isop, nam, l);
  342                 break;
  343 
  344         case PRU_LISTEN:
  345                 error = EOPNOTSUPP;
  346                 break;
  347 
  348         case PRU_CONNECT:
  349                 error = iso_pcbconnect(isop, nam, l);
  350                 if (error)
  351                         break;
  352                 soisconnected(so);
  353                 break;
  354 
  355         case PRU_CONNECT2:
  356                 error = EOPNOTSUPP;
  357                 break;
  358 
  359         case PRU_DISCONNECT:
  360                 soisdisconnected(so);
  361                 iso_pcbdisconnect(isop);
  362                 break;
  363 
  364         case PRU_SHUTDOWN:
  365                 socantsendmore(so);
  366                 break;
  367 
  368         case PRU_RCVD:
  369                 error = EOPNOTSUPP;
  370                 break;
  371 
  372         case PRU_SEND:
  373                 if (control && control->m_len) {
  374                         m_freem(control);
  375                         m_freem(m);
  376                         error = EINVAL;
  377                         break;
  378                 }
  379                 if (nam) {
  380                         if ((so->so_state & SS_ISCONNECTED) != 0) {
  381                                 error = EISCONN;
  382                                 goto die;
  383                         }
  384                         error = iso_pcbconnect(isop, nam, l);
  385                         if (error) {
  386                         die:
  387                                 m_freem(m);
  388                                 break;
  389                         }
  390                 } else {
  391                         if ((so->so_state & SS_ISCONNECTED) == 0) {
  392                                 error = ENOTCONN;
  393                                 goto die;
  394                         }
  395                 }
  396                 error = cltp_output(m, isop);
  397                 if (nam)
  398                         iso_pcbdisconnect(isop);
  399                 break;
  400 
  401         case PRU_SENSE:
  402                 /*
  403                  * stat: don't bother with a blocksize.
  404                  */
  405                 splx(s);
  406                 return (0);
  407 
  408         case PRU_RCVOOB:
  409                 error = EOPNOTSUPP;
  410                 break;
  411 
  412         case PRU_SENDOOB:
  413                 m_freem(control);
  414                 m_freem(m);
  415                 error = EOPNOTSUPP;
  416                 break;
  417 
  418         case PRU_SOCKADDR:
  419                 iso_getnetaddr(isop, nam, TP_LOCAL);
  420                 break;
  421 
  422         case PRU_PEERADDR:
  423                 iso_getnetaddr(isop, nam, TP_FOREIGN);
  424                 break;
  425 
  426         default:
  427                 panic("cltp_usrreq");
  428         }
  429 
  430 release:
  431         splx(s);
  432         return (error);
  433 }

Cache object: beee45a1a48bb6777963dc83be18e547


[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]


This page is part of the FreeBSD/Linux Linux Kernel Cross-Reference, and was automatically generated using a modified version of the LXR engine.