sys/netproto/natm/natm.c

   1 /*      $NetBSD: natm.c,v 1.5 1996/11/09 03:26:26 chuck Exp $   */
   2 /* $FreeBSD: src/sys/netnatm/natm.c,v 1.12 2000/02/13 03:32:03 peter Exp $ */
   3 /* $DragonFly: src/sys/netproto/natm/natm.c,v 1.31 2008/09/24 14:26:39 sephe Exp $ */
   4
   5 /*
   6  *
   7  * Copyright (c) 1996 Charles D. Cranor and Washington University.
   8  * All rights reserved.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  * 3. All advertising materials mentioning features or use of this software
  19  *    must display the following acknowledgement:
  20  *      This product includes software developed by Charles D. Cranor and
  21  *      Washington University.
  22  * 4. The name of the author may not be used to endorse or promote products
  23  *    derived from this software without specific prior written permission.
  24  *
  25  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  26  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  27  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  28  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  29  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  30  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  31  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  32  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  33  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  34  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  35  */
  36
  37 /*
  38  * natm.c: native mode ATM access (both aal0 and aal5).
  39  */
  40
  41 #include <sys/param.h>
  42 #include <sys/systm.h>
  43 #include <sys/kernel.h>
  44 #include <sys/proc.h>
  45 #include <sys/sockio.h>
  46 #include <sys/protosw.h>
  47 #include <sys/malloc.h>
  48 #include <sys/mbuf.h>
  49 #include <sys/socket.h>
  50 #include <sys/socketvar.h>
  51
  52 #include <sys/thread2.h>
  53 #include <sys/msgport2.h>
  54
  55 #include <net/if.h>
  56 #include <net/if_atm.h>
  57 #include <net/netisr.h>
  58
  59 #include <netinet/in.h>
  60
  61 #include "natm.h"
  62
  63 static u_long natm5_sendspace = 16*1024;
  64 static u_long natm5_recvspace = 16*1024;
  65
  66 static u_long natm0_sendspace = 16*1024;
  67 static u_long natm0_recvspace = 16*1024;
  68
  69 /*
  70  * user requests
  71  */
  72 #ifdef FREEBSD_USRREQS
  73 /*
  74  * FreeBSD new usrreqs supersedes pr_usrreq.
  75  */
  76 static int natm_usr_attach (struct socket *, int, struct pru_attach_info *);
  77 static int natm_usr_detach (struct socket *);
  78 static int natm_usr_connect (struct socket *, struct sockaddr *,
  79                                  struct thread *);
  80 static int natm_usr_disconnect (struct socket *);
  81 static int natm_usr_shutdown (struct socket *);
  82 static int natm_usr_send (struct socket *, int, struct mbuf *,
  83                               struct sockaddr *, struct mbuf *,
  84                               struct thread *);
  85 static int natm_usr_peeraddr (struct socket *, struct sockaddr **);
  86 static int natm_usr_control (struct socket *, u_long, caddr_t,
  87                                  struct ifnet *, struct thread *);
  88 static int natm_usr_abort (struct socket *);
  89 static int natm_usr_bind (struct socket *, struct sockaddr *,
  90                               struct thread *);
  91 static int natm_usr_sockaddr (struct socket *, struct sockaddr **);
  92
  93 static int
  94 natm_usr_attach(struct socket *so, int proto, struct pru_attach_info *ai)
  95 {
  96     struct natmpcb *npcb;
  97     int error = 0;
  98
  99     crit_enter();
 100     npcb = (struct natmpcb *) so->so_pcb;
 101
 102     if (npcb) {
 103         error = EISCONN;
 104         goto out;
 105     }
 106
 107     if (so->so_snd.ssb_hiwat == 0 || so->so_rcv.ssb_hiwat == 0) {
 108         if (proto == PROTO_NATMAAL5)
 109             error = soreserve(so, natm5_sendspace, natm5_recvspace,
 110                               ai->sb_rlimit);
 111         else
 112             error = soreserve(so, natm0_sendspace, natm0_recvspace,
 113                               ai->sb_rlimit);
 114         if (error)
 115           goto out;
 116     }
 117
 118     so->so_pcb = (caddr_t) (npcb = npcb_alloc(M_WAITOK));
 119     npcb->npcb_socket = so;
 120  out:
 121     crit_exit();
 122     return (error);
 123 }
 124
 125 static int
 126 natm_usr_detach(struct socket *so)
 127 {
 128     struct natmpcb *npcb;
 129     int error = 0;
 130
 131     crit_enter();
 132     npcb = (struct natmpcb *) so->so_pcb;
 133     if (npcb == NULL) {
 134         error = EINVAL;
 135         goto out;
 136     }
 137
 138     /*
 139      * we turn on 'drain' *before* we sofree.
 140      */
 141     npcb_free(npcb, NPCB_DESTROY);      /* drain */
 142     so->so_pcb = NULL;
 143     sofree(so);
 144  out:
 145     crit_exit();
 146     return (error);
 147 }
 148
 149 static int
 150 natm_usr_connect(struct socket *so, struct sockaddr *nam, struct thread *td)
 151 {
 152     struct natmpcb *npcb;
 153     struct sockaddr_natm *snatm;
 154     struct atm_pseudoioctl api;
 155     struct ifnet *ifp;
 156     int error = 0;
 157     int proto;
 158
 159     crit_enter();
 160     proto = so->so_proto->pr_protocol;
 161     npcb = (struct natmpcb *) so->so_pcb;
 162     if (npcb == NULL) {
 163         error = EINVAL;
 164         goto out;
 165     }
 166
 167     /*
 168      * validate nam and npcb
 169      */
 170
 171     snatm = (struct sockaddr_natm *)nam;
 172     if (snatm->snatm_len != sizeof(*snatm) ||
 173         (npcb->npcb_flags & NPCB_FREE) == 0) {
 174         error = EINVAL;
 175         goto out;
 176     }
 177     if (snatm->snatm_family != AF_NATM) {
 178         error = EAFNOSUPPORT;
 179         goto out;
 180     }
 181
 182     snatm->snatm_if[IFNAMSIZ-1] = '\0';  /* XXX ensure null termination
 183                                             since ifunit() uses strcmp */
 184
 185     /*
 186      * convert interface string to ifp, validate.
 187      */
 188
 189     ifp = ifunit(snatm->snatm_if);
 190     if (ifp == NULL || (ifp->if_flags & IFF_RUNNING) == 0) {
 191         error = ENXIO;
 192         goto out;
 193     }
 194     if (ifp->if_output != atm_output) {
 195         error = EAFNOSUPPORT;
 196         goto out;
 197     }
 198
 199     /*
 200      * register us with the NATM PCB layer
 201      */
 202
 203     if (npcb_add(npcb, ifp, snatm->snatm_vci, snatm->snatm_vpi) != npcb) {
 204         error = EADDRINUSE;
 205         goto out;
 206     }
 207
 208     /*
 209      * enable rx
 210      */
 211
 212     ATM_PH_FLAGS(&api.aph) = (proto == PROTO_NATMAAL5) ? ATM_PH_AAL5 : 0;
 213     ATM_PH_VPI(&api.aph) = npcb->npcb_vpi;
 214     ATM_PH_SETVCI(&api.aph, npcb->npcb_vci);
 215     api.rxhand = npcb;
 216     ifnet_serialize_all(ifp);
 217     if (ifp->if_ioctl == NULL ||
 218         ifp->if_ioctl(ifp, SIOCATMENA, (caddr_t) &api,
 219                       td->td_proc->p_ucred) != 0) {
 220         ifnet_deserialize_all(ifp);
 221         npcb_free(npcb, NPCB_REMOVE);
 222         error = EIO;
 223         goto out;
 224     }
 225     ifnet_deserialize_all(ifp);
 226
 227     soisconnected(so);
 228
 229  out:
 230     crit_exit();
 231     return (error);
 232 }
 233
 234 static int
 235 natm_usr_disconnect(struct socket *so)
 236 {
 237     struct natmpcb *npcb;
 238     struct atm_pseudoioctl api;
 239     struct ifnet *ifp;
 240     int error = 0;
 241
 242     crit_enter();
 243     npcb = (struct natmpcb *) so->so_pcb;
 244     if (npcb == NULL) {
 245         error = EINVAL;
 246         goto out;
 247     }
 248
 249     if ((npcb->npcb_flags & NPCB_CONNECTED) == 0) {
 250         kprintf("natm: disconnected check\n");
 251         error = EIO;
 252         goto out;
 253     }
 254     ifp = npcb->npcb_ifp;
 255
 256     /*
 257      * disable rx
 258      */
 259
 260     ATM_PH_FLAGS(&api.aph) = ATM_PH_AAL5;
 261     ATM_PH_VPI(&api.aph) = npcb->npcb_vpi;
 262     ATM_PH_SETVCI(&api.aph, npcb->npcb_vci);
 263     api.rxhand = npcb;
 264     if (ifp->if_ioctl != NULL) {
 265         ifnet_serialize_all(ifp);
 266         ifp->if_ioctl(ifp, SIOCATMDIS, (caddr_t) &api, NULL);
 267         ifnet_deserialize_all(ifp);
 268     }
 269
 270     npcb_free(npcb, NPCB_REMOVE);
 271     soisdisconnected(so);
 272
 273  out:
 274     crit_exit();
 275     return (error);
 276 }
 277
 278 static int
 279 natm_usr_shutdown(struct socket *so)
 280 {
 281     socantsendmore(so);
 282     return 0;
 283 }
 284
 285 static int
 286 natm_usr_send(struct socket *so, int flags, struct mbuf *m,
 287               struct sockaddr *nam, struct mbuf *control, struct thread *td)
 288 {
 289     struct natmpcb *npcb;
 290     struct atm_pseudohdr *aph;
 291     int error = 0;
 292     int proto = so->so_proto->pr_protocol;
 293
 294     crit_enter();
 295
 296     npcb = (struct natmpcb *) so->so_pcb;
 297     if (npcb == NULL) {
 298         error = EINVAL;
 299         goto out;
 300     }
 301
 302     if (control && control->m_len) {
 303         m_freem(control);
 304         m_freem(m);
 305         error = EINVAL;
 306         goto out;
 307     }
 308
 309     /*
 310      * send the data.   we must put an atm_pseudohdr on first
 311      */
 312
 313     M_PREPEND(m, sizeof(*aph), M_WAITOK);
 314     if (m == NULL) {
 315         error = ENOBUFS;
 316         goto out;
 317     }
 318     aph = mtod(m, struct atm_pseudohdr *);
 319     ATM_PH_VPI(aph) = npcb->npcb_vpi;
 320     ATM_PH_SETVCI(aph, npcb->npcb_vci);
 321     ATM_PH_FLAGS(aph) = (proto == PROTO_NATMAAL5) ? ATM_PH_AAL5 : 0;
 322
 323     error = atm_output(npcb->npcb_ifp, m, NULL, NULL);
 324
 325  out:
 326     crit_exit();
 327     return (error);
 328 }
 329
 330 static int
 331 natm_usr_peeraddr(struct socket *so, struct sockaddr **nam)
 332 {
 333     struct natmpcb *npcb;
 334     struct sockaddr_natm *snatm, ssnatm;
 335     int error = 0;
 336
 337     crit_enter();
 338     npcb = (struct natmpcb *) so->so_pcb;
 339     if (npcb == NULL) {
 340         error = EINVAL;
 341         goto out;
 342     }
 343
 344     snatm = &ssnatm;
 345     bzero(snatm, sizeof(*snatm));
 346     snatm->snatm_len = sizeof(*snatm);
 347     snatm->snatm_family = AF_NATM;
 348     strlcpy(snatm->snatm_if, npcb->npcb_ifp->if_xname,
 349         sizeof(snatm->snatm_if));
 350     snatm->snatm_vci = npcb->npcb_vci;
 351     snatm->snatm_vpi = npcb->npcb_vpi;
 352     *nam = dup_sockaddr((struct sockaddr *)snatm);
 353
 354  out:
 355     crit_exit();
 356     return (error);
 357 }
 358
 359 static int
 360 natm_usr_control(struct socket *so, u_long cmd, caddr_t arg,
 361                  struct ifnet *ifp, struct thread *td)
 362 {
 363     struct natmpcb *npcb;
 364     struct atm_rawioctl ario;
 365     int error = 0;
 366
 367     npcb = (struct natmpcb *) so->so_pcb;
 368     if (npcb == NULL) {
 369         error = EINVAL;
 370         goto out;
 371     }
 372
 373     /*
 374      * raw atm ioctl.   comes in as a SIOCRAWATM.   we convert it to
 375      * SIOCXRAWATM and pass it to the driver.
 376      */
 377     if (cmd == SIOCRAWATM) {
 378         if (npcb->npcb_ifp == NULL) {
 379             error = ENOTCONN;
 380             goto out;
 381         }
 382         ario.npcb = npcb;
 383         ario.rawvalue = *((int *)arg);
 384         ifnet_serialize_all(npcb->npcb_ifp);
 385         error = npcb->npcb_ifp->if_ioctl(npcb->npcb_ifp,
 386                                          SIOCXRAWATM, (caddr_t) &ario,
 387                                          td->td_proc->p_ucred);
 388         ifnet_deserialize_all(npcb->npcb_ifp);
 389         if (!error) {
 390             if (ario.rawvalue)
 391                 npcb->npcb_flags |= NPCB_RAW;
 392             else
 393                 npcb->npcb_flags &= ~(NPCB_RAW);
 394         }
 395     }
 396     else
 397         error = EOPNOTSUPP;
 398  out:
 399     return (error);
 400 }
 401
 402 static int
 403 natm_usr_abort(struct socket *so)
 404 {
 405     return natm_usr_shutdown(so);
 406 }
 407
 408 static int
 409 natm_usr_bind(struct socket *so, struct sockaddr *nam, struct thread *td)
 410 {
 411     return EOPNOTSUPP;
 412 }
 413
 414 static int
 415 natm_usr_sockaddr(struct socket *so, struct sockaddr **nam)
 416 {
 417     return EOPNOTSUPP;
 418 }
 419
 420 /* xxx - should be const */
 421 struct pr_usrreqs natm_usrreqs = {
 422         .pru_abort = natm_usr_abort,
 423         .pru_accept = pru_accept_notsupp,
 424         .pru_attach = natm_usr_attach,
 425         .pru_bind = natm_usr_bind,
 426         .pru_connect = natm_usr_connect,
 427         .pru_connect2 = pru_connect2_notsupp,
 428         .pru_control = natm_usr_control,
 429         .pru_detach = natm_usr_detach,
 430         .pru_disconnect = natm_usr_disconnect,
 431         .pru_listen = pru_listen_notsupp,
 432         .pru_peeraddr = natm_usr_peeraddr,
 433         .pru_rcvd = pru_rcvd_notsupp,
 434         .pru_rcvoob = pru_rcvoob_notsupp,
 435         .pru_send = natm_usr_send,
 436         .pru_sense = pru_sense_null,
 437         .pru_shutdown = natm_usr_shutdown,
 438         .pru_sockaddr = natm_usr_sockaddr,
 439         .pru_sosend = sosend,
 440         .pru_soreceive = soreceive,
 441         .pru_sopoll = sopoll
 442 };
 443
 444 #else  /* !FREEBSD_USRREQS */
 445
 446 #if defined(__NetBSD__) || defined(__OpenBSD__)
 447 int
 448 natm_usrreq(struct socket *so, int req, struct mbuf *m, struct mbuf *nam,
 449             struct mbuf *control, struct proc *p)
 450 #elif defined(__DragonFly__)
 451 int
 452 natm_usrreq(struct socket *so, int req, struct mbuf *m, struct mbuf *nam,
 453             struct mbuf *control)
 454 #endif
 455 {
 456   int error = 0;
 457   struct natmpcb *npcb;
 458   struct sockaddr_natm *snatm;
 459   struct atm_pseudoioctl api;
 460   struct atm_pseudohdr *aph;
 461   struct atm_rawioctl ario;
 462   struct ifnet *ifp;
 463   int proto = so->so_proto->pr_protocol;
 464
 465   crit_enter();
 466
 467   npcb = (struct natmpcb *) so->so_pcb;
 468
 469   if (npcb == NULL && req != PRU_ATTACH) {
 470     error = EINVAL;
 471     goto done;
 472   }
 473
 474
 475   switch (req) {
 476     case PRU_ATTACH:                    /* attach protocol to up */
 477
 478       if (npcb) {
 479         error = EISCONN;
 480         break;
 481       }
 482
 483       if (so->so_snd.ssb_hiwat == 0 || so->so_rcv.ssb_hiwat == 0) {
 484         if (proto == PROTO_NATMAAL5)
 485           error = soreserve(so, natm5_sendspace, natm5_recvspace);
 486         else
 487           error = soreserve(so, natm0_sendspace, natm0_recvspace);
 488         if (error)
 489           break;
 490       }
 491
 492       so->so_pcb = (caddr_t) (npcb = npcb_alloc(M_WAITOK));
 493       npcb->npcb_socket = so;
 494
 495       break;
 496
 497     case PRU_DETACH:                    /* detach protocol from up */
 498
 499       /*
 500        * we turn on 'drain' *before* we sofree.
 501        */
 502
 503       npcb_free(npcb, NPCB_DESTROY);    /* drain */
 504       so->so_pcb = NULL;
 505       sofree(so);
 506
 507       break;
 508
 509     case PRU_CONNECT:                   /* establish connection to peer */
 510
 511       /*
 512        * validate nam and npcb
 513        */
 514
 515       if (nam->m_len != sizeof(*snatm)) {
 516         error = EINVAL;
 517         break;
 518       }
 519       snatm = mtod(nam, struct sockaddr_natm *);
 520       if (snatm->snatm_len != sizeof(*snatm) ||
 521                 (npcb->npcb_flags & NPCB_FREE) == 0) {
 522         error = EINVAL;
 523         break;
 524       }
 525       if (snatm->snatm_family != AF_NATM) {
 526         error = EAFNOSUPPORT;
 527         break;
 528       }
 529
 530       snatm->snatm_if[IFNAMSIZ-1] = '\0';  /* XXX ensure null termination
 531                                                 since ifunit() uses strcmp */
 532
 533       /*
 534        * convert interface string to ifp, validate.
 535        */
 536
 537       ifp = ifunit(snatm->snatm_if);
 538       if (ifp == NULL || (ifp->if_flags & IFF_RUNNING) == 0) {
 539         error = ENXIO;
 540         break;
 541       }
 542       if (ifp->if_output != atm_output) {
 543         error = EAFNOSUPPORT;
 544         break;
 545       }
 546
 547
 548       /*
 549        * register us with the NATM PCB layer
 550        */
 551
 552       if (npcb_add(npcb, ifp, snatm->snatm_vci, snatm->snatm_vpi) != npcb) {
 553         error = EADDRINUSE;
 554         break;
 555       }
 556
 557       /*
 558        * enable rx
 559        */
 560
 561       ATM_PH_FLAGS(&api.aph) = (proto == PROTO_NATMAAL5) ? ATM_PH_AAL5 : 0;
 562       ATM_PH_VPI(&api.aph) = npcb->npcb_vpi;
 563       ATM_PH_SETVCI(&api.aph, npcb->npcb_vci);
 564       api.rxhand = npcb;
 565       ifnet_serialize_all(ifp);
 566       if (ifp->if_ioctl == NULL ||
 567           ifp->if_ioctl(ifp, SIOCATMENA, (caddr_t) &api, NULL) != 0) {
 568         ifnet_deserialize_all(ifp);
 569         npcb_free(npcb, NPCB_REMOVE);
 570         error = EIO;
 571         break;
 572       }
 573       ifnet_deserialize_all(ifp);
 574
 575       soisconnected(so);
 576
 577       break;
 578
 579     case PRU_DISCONNECT:                /* disconnect from peer */
 580
 581       if ((npcb->npcb_flags & NPCB_CONNECTED) == 0) {
 582         kprintf("natm: disconnected check\n");
 583         error = EIO;
 584         break;
 585       }
 586       ifp = npcb->npcb_ifp;
 587
 588       /*
 589        * disable rx
 590        */
 591
 592       ATM_PH_FLAGS(&api.aph) = ATM_PH_AAL5;
 593       ATM_PH_VPI(&api.aph) = npcb->npcb_vpi;
 594       ATM_PH_SETVCI(&api.aph, npcb->npcb_vci);
 595       api.rxhand = npcb;
 596       ifnet_serialize_all(ifp);
 597       if (ifp->if_ioctl != NULL)
 598           ifp->if_ioctl(ifp, SIOCATMDIS, (caddr_t) &api, NULL);
 599       ifnet_deserialize_all(ifp);
 600
 601       npcb_free(npcb, NPCB_REMOVE);
 602       soisdisconnected(so);
 603
 604       break;
 605
 606     case PRU_SHUTDOWN:                  /* won't send any more data */
 607       socantsendmore(so);
 608       break;
 609
 610     case PRU_SEND:                      /* send this data */
 611       if (control && control->m_len) {
 612         m_freem(control);
 613         m_freem(m);
 614         error = EINVAL;
 615         break;
 616       }
 617
 618       /*
 619        * send the data.   we must put an atm_pseudohdr on first
 620        */
 621
 622       M_PREPEND(m, sizeof(*aph), M_WAITOK);
 623       if (m == NULL) {
 624         error = ENOBUFS;
 625         break;
 626       }
 627       aph = mtod(m, struct atm_pseudohdr *);
 628       ATM_PH_VPI(aph) = npcb->npcb_vpi;
 629       ATM_PH_SETVCI(aph, npcb->npcb_vci);
 630       ATM_PH_FLAGS(aph) = (proto == PROTO_NATMAAL5) ? ATM_PH_AAL5 : 0;
 631
 632       error = atm_output(npcb->npcb_ifp, m, NULL, NULL);
 633
 634       break;
 635
 636     case PRU_SENSE:                     /* return status into m */
 637       /* return zero? */
 638       break;
 639
 640     case PRU_PEERADDR:                  /* fetch peer's address */
 641       snatm = mtod(nam, struct sockaddr_natm *);
 642       bzero(snatm, sizeof(*snatm));
 643       nam->m_len = snatm->snatm_len = sizeof(*snatm);
 644       snatm->snatm_family = AF_NATM;
 645 #if defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__)
 646       bcopy(npcb->npcb_ifp->if_xname, snatm->snatm_if, sizeof(snatm->snatm_if));
 647 #elif defined(__DragonFly__)
 648       ksnprintf(snatm->snatm_if, sizeof(snatm->snatm_if),
 649         "%s%d", npcb->npcb_ifp->if_name, npcb->npcb_ifp->if_unit);
 650 #endif
 651       snatm->snatm_vci = npcb->npcb_vci;
 652       snatm->snatm_vpi = npcb->npcb_vpi;
 653       break;
 654
 655     case PRU_CONTROL:                   /* control operations on protocol */
 656       /*
 657        * raw atm ioctl.   comes in as a SIOCRAWATM.   we convert it to
 658        * SIOCXRAWATM and pass it to the driver.
 659        */
 660       if ((u_long)m == SIOCRAWATM) {
 661         if (npcb->npcb_ifp == NULL) {
 662           error = ENOTCONN;
 663           break;
 664         }
 665         ario.npcb = npcb;
 666         ario.rawvalue = *((int *)nam);
 667         ifnet_serialize_all(npcb->npcb_ifp);
 668         error = npcb->npcb_ifp->if_ioctl(npcb->npcb_ifp, SIOCXRAWATM,
 669                                          (caddr_t) &ario, NULL);
 670         ifnet_deserialize_all(npcb->npcb_ifp);
 671         if (!error) {
 672           if (ario.rawvalue)
 673             npcb->npcb_flags |= NPCB_RAW;
 674           else
 675             npcb->npcb_flags &= ~(NPCB_RAW);
 676         }
 677
 678         break;
 679       }
 680
 681       error = EOPNOTSUPP;
 682       break;
 683
 684     case PRU_BIND:                      /* bind socket to address */
 685     case PRU_LISTEN:                    /* listen for connection */
 686     case PRU_ACCEPT:                    /* accept connection from peer */
 687     case PRU_CONNECT2:                  /* connect two sockets */
 688     case PRU_ABORT:                     /* abort (fast DISCONNECT, DETATCH) */
 689                                         /* (only happens if LISTEN socket) */
 690     case PRU_RCVD:                      /* have taken data; more room now */
 691     case PRU_FASTTIMO:                  /* 200ms timeout */
 692     case PRU_SLOWTIMO:                  /* 500ms timeout */
 693     case PRU_RCVOOB:                    /* retrieve out of band data */
 694     case PRU_SENDOOB:                   /* send out of band data */
 695     case PRU_PROTORCV:                  /* receive from below */
 696     case PRU_PROTOSEND:                 /* send to below */
 697     case PRU_SOCKADDR:                  /* fetch socket's address */
 698 #ifdef DIAGNOSTIC
 699       kprintf("natm: PRU #%d unsupported\n", req);
 700 #endif
 701       error = EOPNOTSUPP;
 702       break;
 703
 704     default: panic("natm usrreq");
 705   }
 706
 707 done:
 708   crit_exit();
 709   return(error);
 710 }
 711
 712 #endif  /* !FREEBSD_USRREQS */
 713
 714 /*
 715  * natm0_sysctl: not used, but here in case we want to add something
 716  * later...
 717  */
 718
 719 int
 720 natm0_sysctl(int *name, u_int namelen, void *oldp, size_t *oldlenp,
 721              void *newp, size_t newlen)
 722 {
 723   /* All sysctl names at this level are terminal. */
 724   if (namelen != 1)
 725     return (ENOTDIR);
 726   return (ENOPROTOOPT);
 727 }
 728
 729 /*
 730  * natm5_sysctl: not used, but here in case we want to add something
 731  * later...
 732  */
 733
 734 int
 735 natm5_sysctl(int *name, u_int namelen, void *oldp, size_t *oldlenp,
 736              void *newp, size_t newlen)
 737 {
 738   /* All sysctl names at this level are terminal. */
 739   if (namelen != 1)
 740     return (ENOTDIR);
 741   return (ENOPROTOOPT);
 742 }
 743
 744 static void natmintr(struct netmsg *);
 745
 746 #if defined(__DragonFly__)
 747 static void
 748 netisr_natm_setup(void *dummy __unused)
 749 {
 750         netisr_register(NETISR_NATM, cpu0_portfn, pktinfo_portfn_cpu0,
 751                         natmintr, NETISR_FLAG_NOTMPSAFE);
 752 }
 753 SYSINIT(natm_setup, SI_BOOT2_KLD, SI_ORDER_ANY, netisr_natm_setup, NULL);
 754 #endif
 755
 756 void
 757 natm_init(void)
 758 {
 759   LIST_INIT(&natm_pcbs);
 760
 761   netisr_register(NETISR_NATM, cpu0_portfn, pktinfo_portfn_cpu0,
 762                   natmintr, NETISR_FLAG_NOTMPSAFE);
 763 }
 764
 765 /*
 766  * natmintr: software interrupt
 767  *
 768  * note: we expect a socket pointer in rcvif rather than an interface
 769  * pointer.    we can get the interface pointer from the so's PCB if
 770  * we really need it.
 771  */
 772 static void
 773 natmintr(struct netmsg *msg)
 774 {
 775   struct mbuf *m = ((struct netmsg_packet *)msg)->nm_packet;
 776   struct socket *so;
 777   struct natmpcb *npcb;
 778
 779 #ifdef DIAGNOSTIC
 780   if ((m->m_flags & M_PKTHDR) == 0)
 781     panic("natmintr no HDR");
 782 #endif
 783
 784   npcb = (struct natmpcb *) m->m_pkthdr.rcvif; /* XXX: overloaded */
 785   so = npcb->npcb_socket;
 786
 787   crit_enter();
 788   npcb->npcb_inq--;
 789   crit_exit();
 790
 791   if (npcb->npcb_flags & NPCB_DRAIN) {
 792     m_freem(m);
 793     if (npcb->npcb_inq == 0)
 794       FREE(npcb, M_PCB);                        /* done! */
 795     goto out;
 796   }
 797
 798   if (npcb->npcb_flags & NPCB_FREE) {
 799     m_freem(m);                                 /* drop */
 800     goto out;
 801   }
 802
 803 #ifdef NEED_TO_RESTORE_IFP
 804   m->m_pkthdr.rcvif = npcb->npcb_ifp;
 805 #else
 806 #ifdef DIAGNOSTIC
 807 m->m_pkthdr.rcvif = NULL;       /* null it out to be safe */
 808 #endif
 809 #endif
 810
 811   if (ssb_space(&so->so_rcv) > m->m_pkthdr.len ||
 812      ((npcb->npcb_flags & NPCB_RAW) != 0 && so->so_rcv.ssb_cc < NPCB_RAWCC) ) {
 813 #ifdef NATM_STAT
 814     natm_sookcnt++;
 815     natm_sookbytes += m->m_pkthdr.len;
 816 #endif
 817     sbappendrecord(&so->so_rcv.sb, m);
 818     sorwakeup(so);
 819   } else {
 820 #ifdef NATM_STAT
 821     natm_sodropcnt++;
 822     natm_sodropbytes += m->m_pkthdr.len;
 823 #endif
 824     m_freem(m);
 825   }
 826 out:
 827   ;
 828   /* msg was embedded in the mbuf, do not reply! */
 829 }
 830