natm.c revision 28270
1/* $NetBSD: natm.c,v 1.5 1996/11/09 03:26:26 chuck Exp $ */ 2 3/* 4 * 5 * Copyright (c) 1996 Charles D. Cranor and Washington University. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by Charles D. Cranor and 19 * Washington University. 20 * 4. The name of the author may not be used to endorse or promote products 21 * derived from this software without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 24 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 25 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 26 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 27 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 28 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 29 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 30 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 31 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 32 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 33 */ 34 35/* 36 * natm.c: native mode ATM access (both aal0 and aal5). 37 */ 38 39#include <sys/param.h> 40#include <sys/systm.h> 41#include <sys/kernel.h> 42#include <sys/domain.h> 43#if defined(__FreeBSD__) 44#include <sys/sockio.h> 45#else 46#include <sys/ioctl.h> 47#endif 48#include <sys/proc.h> 49#include <sys/protosw.h> 50#include <sys/mbuf.h> 51#include <sys/socket.h> 52#include <sys/socketvar.h> 53 54#include <net/if.h> 55#include <net/if_atm.h> 56#include <net/netisr.h> 57#include <net/radix.h> 58#include <net/route.h> 59 60#include <netinet/in.h> 61 62#include <netnatm/natm.h> 63 64u_long natm5_sendspace = 16*1024; 65u_long natm5_recvspace = 16*1024; 66 67u_long natm0_sendspace = 16*1024; 68u_long natm0_recvspace = 16*1024; 69 70/* 71 * user requests 72 */ 73#ifdef FREEBSD_USRREQS 74/* 75 * FreeBSD new usrreqs supersedes pr_usrreq. 76 */ 77static int natm_usr_attach __P((struct socket *, int, struct proc *)); 78static int natm_usr_detach __P((struct socket *)); 79static int natm_usr_connect __P((struct socket *, struct sockaddr *, 80 struct proc *)); 81static int natm_usr_disconnect __P((struct socket *)); 82static int natm_usr_shutdown __P((struct socket *)); 83static int natm_usr_send __P((struct socket *, int, struct mbuf *, 84 struct sockaddr *, struct mbuf *, 85 struct proc *)); 86static int natm_usr_peeraddr __P((struct socket *, struct sockaddr **)); 87static int natm_usr_control __P((struct socket *, int, caddr_t, 88 struct ifnet *, struct proc *)); 89static int natm_usr_abort __P((struct socket *)); 90static int natm_usr_bind __P((struct socket *, struct sockaddr *, 91 struct proc *)); 92static int natm_usr_sockaddr __P((struct socket *, struct sockaddr **)); 93 94static int 95natm_usr_attach(struct socket *so, int proto, struct proc *p) 96{ 97 struct natmpcb *npcb; 98 int error = 0; 99 int s = SPLSOFTNET(); 100 101 npcb = (struct natmpcb *) so->so_pcb; 102 103 if (npcb) { 104 error = EISCONN; 105 goto out; 106 } 107 108 if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) { 109 if (proto == PROTO_NATMAAL5) 110 error = soreserve(so, natm5_sendspace, natm5_recvspace); 111 else 112 error = soreserve(so, natm0_sendspace, natm0_recvspace); 113 if (error) 114 goto out; 115 } 116 117 so->so_pcb = (caddr_t) (npcb = npcb_alloc(M_WAITOK)); 118 npcb->npcb_socket = so; 119 out: 120 splx(s); 121 return (error); 122} 123 124static int 125natm_usr_detach(struct socket *so) 126{ 127 struct natmpcb *npcb; 128 int error = 0; 129 int s = SPLSOFTNET(); 130 131 npcb = (struct natmpcb *) so->so_pcb; 132 if (npcb == NULL) { 133 error = EINVAL; 134 goto out; 135 } 136 137 /* 138 * we turn on 'drain' *before* we sofree. 139 */ 140 npcb_free(npcb, NPCB_DESTROY); /* drain */ 141 so->so_pcb = NULL; 142 sofree(so); 143 out: 144 splx(s); 145 return (error); 146} 147 148static int 149natm_usr_connect(struct socket *so, struct sockaddr *nam, struct proc *p) 150{ 151 struct natmpcb *npcb; 152 struct sockaddr_natm *snatm; 153 struct atm_pseudoioctl api; 154 struct atm_pseudohdr *aph; 155 struct ifnet *ifp; 156 int error = 0; 157 int s2, s = SPLSOFTNET(); 158 int proto = so->so_proto->pr_protocol; 159 160 npcb = (struct natmpcb *) so->so_pcb; 161 if (npcb == NULL) { 162 error = EINVAL; 163 goto out; 164 } 165 166 /* 167 * validate nam and npcb 168 */ 169 170 snatm = (struct sockaddr_natm *)nam; 171 if (snatm->snatm_len != sizeof(*snatm) || 172 (npcb->npcb_flags & NPCB_FREE) == 0) { 173 error = EINVAL; 174 goto out; 175 } 176 if (snatm->snatm_family != AF_NATM) { 177 error = EAFNOSUPPORT; 178 goto out; 179 } 180 181 snatm->snatm_if[IFNAMSIZ-1] = '\0'; /* XXX ensure null termination 182 since ifunit() uses strcmp */ 183 184 /* 185 * convert interface string to ifp, validate. 186 */ 187 188 ifp = ifunit(snatm->snatm_if); 189 if (ifp == NULL || (ifp->if_flags & IFF_RUNNING) == 0) { 190 error = ENXIO; 191 goto out; 192 } 193 if (ifp->if_output != atm_output) { 194 error = EAFNOSUPPORT; 195 goto out; 196 } 197 198 /* 199 * register us with the NATM PCB layer 200 */ 201 202 if (npcb_add(npcb, ifp, snatm->snatm_vci, snatm->snatm_vpi) != npcb) { 203 error = EADDRINUSE; 204 goto out; 205 } 206 207 /* 208 * enable rx 209 */ 210 211 ATM_PH_FLAGS(&api.aph) = (proto == PROTO_NATMAAL5) ? ATM_PH_AAL5 : 0; 212 ATM_PH_VPI(&api.aph) = npcb->npcb_vpi; 213 ATM_PH_SETVCI(&api.aph, npcb->npcb_vci); 214 api.rxhand = npcb; 215 s2 = splimp(); 216 if (ifp->if_ioctl == NULL || 217 ifp->if_ioctl(ifp, SIOCATMENA, (caddr_t) &api) != 0) { 218 splx(s2); 219 npcb_free(npcb, NPCB_REMOVE); 220 error = EIO; 221 goto out; 222 } 223 splx(s2); 224 225 soisconnected(so); 226 227 out: 228 splx(s); 229 return (error); 230} 231 232static int 233natm_usr_disconnect(struct socket *so) 234{ 235 struct natmpcb *npcb; 236 struct sockaddr_natm *snatm; 237 struct atm_pseudoioctl api; 238 struct atm_pseudohdr *aph; 239 struct ifnet *ifp; 240 int error = 0; 241 int s2, s = SPLSOFTNET(); 242 int proto = so->so_proto->pr_protocol; 243 244 npcb = (struct natmpcb *) so->so_pcb; 245 if (npcb == NULL) { 246 error = EINVAL; 247 goto out; 248 } 249 250 if ((npcb->npcb_flags & NPCB_CONNECTED) == 0) { 251 printf("natm: disconnected check\n"); 252 error = EIO; 253 goto out; 254 } 255 ifp = npcb->npcb_ifp; 256 257 /* 258 * disable rx 259 */ 260 261 ATM_PH_FLAGS(&api.aph) = ATM_PH_AAL5; 262 ATM_PH_VPI(&api.aph) = npcb->npcb_vpi; 263 ATM_PH_SETVCI(&api.aph, npcb->npcb_vci); 264 api.rxhand = npcb; 265 s2 = splimp(); 266 if (ifp->if_ioctl != NULL) 267 ifp->if_ioctl(ifp, SIOCATMDIS, (caddr_t) &api); 268 splx(s2); 269 270 npcb_free(npcb, NPCB_REMOVE); 271 soisdisconnected(so); 272 273 out: 274 splx(s); 275 return (error); 276} 277 278static int 279natm_usr_shutdown(struct socket *so) 280{ 281 socantsendmore(so); 282 return 0; 283} 284 285static int 286natm_usr_send(struct socket *so, int flags, struct mbuf *m, 287 struct sockaddr *nam, struct mbuf *control, struct proc *p) 288{ 289 struct natmpcb *npcb; 290 struct atm_pseudohdr *aph; 291 int error = 0; 292 int s = SPLSOFTNET(); 293 int proto = so->so_proto->pr_protocol; 294 295 npcb = (struct natmpcb *) so->so_pcb; 296 if (npcb == NULL) { 297 error = EINVAL; 298 goto out; 299 } 300 301 if (control && control->m_len) { 302 m_freem(control); 303 m_freem(m); 304 error = EINVAL; 305 goto out; 306 } 307 308 /* 309 * send the data. we must put an atm_pseudohdr on first 310 */ 311 312 M_PREPEND(m, sizeof(*aph), M_WAITOK); 313 if (m == NULL) { 314 error = ENOBUFS; 315 goto out; 316 } 317 aph = mtod(m, struct atm_pseudohdr *); 318 ATM_PH_VPI(aph) = npcb->npcb_vpi; 319 ATM_PH_SETVCI(aph, npcb->npcb_vci); 320 ATM_PH_FLAGS(aph) = (proto == PROTO_NATMAAL5) ? ATM_PH_AAL5 : 0; 321 322 error = atm_output(npcb->npcb_ifp, m, NULL, NULL); 323 324 out: 325 splx(s); 326 return (error); 327} 328 329static int 330natm_usr_peeraddr(struct socket *so, struct sockaddr **nam) 331{ 332 struct natmpcb *npcb; 333 struct sockaddr_natm *snatm, ssnatm; 334 int error = 0; 335 int s = SPLSOFTNET(); 336 337 npcb = (struct natmpcb *) so->so_pcb; 338 if (npcb == NULL) { 339 error = EINVAL; 340 goto out; 341 } 342 343 snatm = &ssnatm; 344 bzero(snatm, sizeof(*snatm)); 345 snatm->snatm_len = sizeof(*snatm); 346 snatm->snatm_family = AF_NATM; 347 sprintf(snatm->snatm_if, "%s%d", npcb->npcb_ifp->if_name, 348 npcb->npcb_ifp->if_unit); 349 snatm->snatm_vci = npcb->npcb_vci; 350 snatm->snatm_vpi = npcb->npcb_vpi; 351 *nam = dup_sockaddr((struct sockaddr *)snatm, 0); 352 353 out: 354 splx(s); 355 return (error); 356} 357 358static int 359natm_usr_control(struct socket *so, int cmd, caddr_t arg, 360 struct ifnet *ifp, struct proc *p) 361{ 362 struct natmpcb *npcb; 363 struct atm_rawioctl ario; 364 int error = 0; 365 int s = SPLSOFTNET(); 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 error = npcb->npcb_ifp->if_ioctl(npcb->npcb_ifp, 385 SIOCXRAWATM, (caddr_t) &ario); 386 if (!error) { 387 if (ario.rawvalue) 388 npcb->npcb_flags |= NPCB_RAW; 389 else 390 npcb->npcb_flags &= ~(NPCB_RAW); 391 } 392 } 393 else 394 error = EOPNOTSUPP; 395 396 out: 397 splx(s); 398 return (error); 399} 400 401static int 402natm_usr_abort(struct socket *so) 403{ 404 return natm_usr_shutdown(so); 405} 406 407static int 408natm_usr_bind(struct socket *so, struct sockaddr *nam, struct proc *p) 409{ 410 return EOPNOTSUPP; 411} 412 413static int 414natm_usr_sockaddr(struct socket *so, struct sockaddr **nam) 415{ 416 return EOPNOTSUPP; 417} 418 419/* xxx - should be const */ 420struct pr_usrreqs natm_usrreqs = { 421 natm_usr_abort, pru_accept_notsupp, natm_usr_attach, natm_usr_bind, 422 natm_usr_connect, pru_connect2_notsupp, natm_usr_control, 423 natm_usr_detach, natm_usr_disconnect, pru_listen_notsupp, 424 natm_usr_peeraddr, pru_rcvd_notsupp, pru_rcvoob_notsupp, 425 natm_usr_send, pru_sense_null, natm_usr_shutdown, 426 natm_usr_sockaddr, sosend, soreceive, soselect 427}; 428 429#else /* !FREEBSD_USRREQS */ 430 431#if defined(__NetBSD__) || defined(__OpenBSD__) 432int natm_usrreq(so, req, m, nam, control, p) 433#elif defined(__FreeBSD__) 434int natm_usrreq(so, req, m, nam, control) 435#endif 436 437struct socket *so; 438int req; 439struct mbuf *m, *nam, *control; 440#if defined(__NetBSD__) || defined(__OpenBSD__) 441struct proc *p; 442#endif 443 444{ 445 int error = 0, s, s2; 446 struct natmpcb *npcb; 447 struct sockaddr_natm *snatm; 448 struct atm_pseudoioctl api; 449 struct atm_pseudohdr *aph; 450 struct atm_rawioctl ario; 451 struct ifnet *ifp; 452 int proto = so->so_proto->pr_protocol; 453 454 s = SPLSOFTNET(); 455 456 npcb = (struct natmpcb *) so->so_pcb; 457 458 if (npcb == NULL && req != PRU_ATTACH) { 459 error = EINVAL; 460 goto done; 461 } 462 463 464 switch (req) { 465 case PRU_ATTACH: /* attach protocol to up */ 466 467 if (npcb) { 468 error = EISCONN; 469 break; 470 } 471 472 if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) { 473 if (proto == PROTO_NATMAAL5) 474 error = soreserve(so, natm5_sendspace, natm5_recvspace); 475 else 476 error = soreserve(so, natm0_sendspace, natm0_recvspace); 477 if (error) 478 break; 479 } 480 481 so->so_pcb = (caddr_t) (npcb = npcb_alloc(M_WAITOK)); 482 npcb->npcb_socket = so; 483 484 break; 485 486 case PRU_DETACH: /* detach protocol from up */ 487 488 /* 489 * we turn on 'drain' *before* we sofree. 490 */ 491 492 npcb_free(npcb, NPCB_DESTROY); /* drain */ 493 so->so_pcb = NULL; 494 sofree(so); 495 496 break; 497 498 case PRU_CONNECT: /* establish connection to peer */ 499 500 /* 501 * validate nam and npcb 502 */ 503 504 if (nam->m_len != sizeof(*snatm)) { 505 error = EINVAL; 506 break; 507 } 508 snatm = mtod(nam, struct sockaddr_natm *); 509 if (snatm->snatm_len != sizeof(*snatm) || 510 (npcb->npcb_flags & NPCB_FREE) == 0) { 511 error = EINVAL; 512 break; 513 } 514 if (snatm->snatm_family != AF_NATM) { 515 error = EAFNOSUPPORT; 516 break; 517 } 518 519 snatm->snatm_if[IFNAMSIZ-1] = '\0'; /* XXX ensure null termination 520 since ifunit() uses strcmp */ 521 522 /* 523 * convert interface string to ifp, validate. 524 */ 525 526 ifp = ifunit(snatm->snatm_if); 527 if (ifp == NULL || (ifp->if_flags & IFF_RUNNING) == 0) { 528 error = ENXIO; 529 break; 530 } 531 if (ifp->if_output != atm_output) { 532 error = EAFNOSUPPORT; 533 break; 534 } 535 536 537 /* 538 * register us with the NATM PCB layer 539 */ 540 541 if (npcb_add(npcb, ifp, snatm->snatm_vci, snatm->snatm_vpi) != npcb) { 542 error = EADDRINUSE; 543 break; 544 } 545 546 /* 547 * enable rx 548 */ 549 550 ATM_PH_FLAGS(&api.aph) = (proto == PROTO_NATMAAL5) ? ATM_PH_AAL5 : 0; 551 ATM_PH_VPI(&api.aph) = npcb->npcb_vpi; 552 ATM_PH_SETVCI(&api.aph, npcb->npcb_vci); 553 api.rxhand = npcb; 554 s2 = splimp(); 555 if (ifp->if_ioctl == NULL || 556 ifp->if_ioctl(ifp, SIOCATMENA, (caddr_t) &api) != 0) { 557 splx(s2); 558 npcb_free(npcb, NPCB_REMOVE); 559 error = EIO; 560 break; 561 } 562 splx(s2); 563 564 soisconnected(so); 565 566 break; 567 568 case PRU_DISCONNECT: /* disconnect from peer */ 569 570 if ((npcb->npcb_flags & NPCB_CONNECTED) == 0) { 571 printf("natm: disconnected check\n"); 572 error = EIO; 573 break; 574 } 575 ifp = npcb->npcb_ifp; 576 577 /* 578 * disable rx 579 */ 580 581 ATM_PH_FLAGS(&api.aph) = ATM_PH_AAL5; 582 ATM_PH_VPI(&api.aph) = npcb->npcb_vpi; 583 ATM_PH_SETVCI(&api.aph, npcb->npcb_vci); 584 api.rxhand = npcb; 585 s2 = splimp(); 586 if (ifp->if_ioctl != NULL) 587 ifp->if_ioctl(ifp, SIOCATMDIS, (caddr_t) &api); 588 splx(s2); 589 590 npcb_free(npcb, NPCB_REMOVE); 591 soisdisconnected(so); 592 593 break; 594 595 case PRU_SHUTDOWN: /* won't send any more data */ 596 socantsendmore(so); 597 break; 598 599 case PRU_SEND: /* send this data */ 600 if (control && control->m_len) { 601 m_freem(control); 602 m_freem(m); 603 error = EINVAL; 604 break; 605 } 606 607 /* 608 * send the data. we must put an atm_pseudohdr on first 609 */ 610 611 M_PREPEND(m, sizeof(*aph), M_WAITOK); 612 if (m == NULL) { 613 error = ENOBUFS; 614 break; 615 } 616 aph = mtod(m, struct atm_pseudohdr *); 617 ATM_PH_VPI(aph) = npcb->npcb_vpi; 618 ATM_PH_SETVCI(aph, npcb->npcb_vci); 619 ATM_PH_FLAGS(aph) = (proto == PROTO_NATMAAL5) ? ATM_PH_AAL5 : 0; 620 621 error = atm_output(npcb->npcb_ifp, m, NULL, NULL); 622 623 break; 624 625 case PRU_SENSE: /* return status into m */ 626 /* return zero? */ 627 break; 628 629 case PRU_PEERADDR: /* fetch peer's address */ 630 snatm = mtod(nam, struct sockaddr_natm *); 631 bzero(snatm, sizeof(*snatm)); 632 nam->m_len = snatm->snatm_len = sizeof(*snatm); 633 snatm->snatm_family = AF_NATM; 634#if defined(__NetBSD__) || defined(__OpenBSD__) 635 bcopy(npcb->npcb_ifp->if_xname, snatm->snatm_if, sizeof(snatm->snatm_if)); 636#elif defined(__FreeBSD__) 637 sprintf(snatm->snatm_if, "%s%d", npcb->npcb_ifp->if_name, 638 npcb->npcb_ifp->if_unit); 639#endif 640 snatm->snatm_vci = npcb->npcb_vci; 641 snatm->snatm_vpi = npcb->npcb_vpi; 642 break; 643 644 case PRU_CONTROL: /* control operations on protocol */ 645 /* 646 * raw atm ioctl. comes in as a SIOCRAWATM. we convert it to 647 * SIOCXRAWATM and pass it to the driver. 648 */ 649 if ((u_long)m == SIOCRAWATM) { 650 if (npcb->npcb_ifp == NULL) { 651 error = ENOTCONN; 652 break; 653 } 654 ario.npcb = npcb; 655 ario.rawvalue = *((int *)nam); 656 error = npcb->npcb_ifp->if_ioctl(npcb->npcb_ifp, 657 SIOCXRAWATM, (caddr_t) &ario); 658 if (!error) { 659 if (ario.rawvalue) 660 npcb->npcb_flags |= NPCB_RAW; 661 else 662 npcb->npcb_flags &= ~(NPCB_RAW); 663 } 664 665 break; 666 } 667 668 error = EOPNOTSUPP; 669 break; 670 671 case PRU_BIND: /* bind socket to address */ 672 case PRU_LISTEN: /* listen for connection */ 673 case PRU_ACCEPT: /* accept connection from peer */ 674 case PRU_CONNECT2: /* connect two sockets */ 675 case PRU_ABORT: /* abort (fast DISCONNECT, DETATCH) */ 676 /* (only happens if LISTEN socket) */ 677 case PRU_RCVD: /* have taken data; more room now */ 678 case PRU_FASTTIMO: /* 200ms timeout */ 679 case PRU_SLOWTIMO: /* 500ms timeout */ 680 case PRU_RCVOOB: /* retrieve out of band data */ 681 case PRU_SENDOOB: /* send out of band data */ 682 case PRU_PROTORCV: /* receive from below */ 683 case PRU_PROTOSEND: /* send to below */ 684 case PRU_SOCKADDR: /* fetch socket's address */ 685#ifdef DIAGNOSTIC 686 printf("natm: PRU #%d unsupported\n", req); 687#endif 688 error = EOPNOTSUPP; 689 break; 690 691 default: panic("natm usrreq"); 692 } 693 694done: 695 splx(s); 696 return(error); 697} 698 699#endif /* !FREEBSD_USRREQS */ 700 701/* 702 * natmintr: splsoftnet interrupt 703 * 704 * note: we expect a socket pointer in rcvif rather than an interface 705 * pointer. we can get the interface pointer from the so's PCB if 706 * we really need it. 707 */ 708 709void 710natmintr() 711 712{ 713 int s; 714 struct mbuf *m; 715 struct socket *so; 716 struct natmpcb *npcb; 717 718next: 719 s = splimp(); 720 IF_DEQUEUE(&natmintrq, m); 721 splx(s); 722 if (m == NULL) 723 return; 724 725#ifdef DIAGNOSTIC 726 if ((m->m_flags & M_PKTHDR) == 0) 727 panic("natmintr no HDR"); 728#endif 729 730 npcb = (struct natmpcb *) m->m_pkthdr.rcvif; /* XXX: overloaded */ 731 so = npcb->npcb_socket; 732 733 s = splimp(); /* could have atm devs @ different levels */ 734 npcb->npcb_inq--; 735 splx(s); 736 737 if (npcb->npcb_flags & NPCB_DRAIN) { 738 m_freem(m); 739 if (npcb->npcb_inq == 0) 740 FREE(npcb, M_PCB); /* done! */ 741 goto next; 742 } 743 744 if (npcb->npcb_flags & NPCB_FREE) { 745 m_freem(m); /* drop */ 746 goto next; 747 } 748 749#ifdef NEED_TO_RESTORE_IFP 750 m->m_pkthdr.rcvif = npcb->npcb_ifp; 751#else 752#ifdef DIAGNOSTIC 753m->m_pkthdr.rcvif = NULL; /* null it out to be safe */ 754#endif 755#endif 756 757 if (sbspace(&so->so_rcv) > m->m_pkthdr.len || 758 ((npcb->npcb_flags & NPCB_RAW) != 0 && so->so_rcv.sb_cc < NPCB_RAWCC) ) { 759#ifdef NATM_STAT 760 natm_sookcnt++; 761 natm_sookbytes += m->m_pkthdr.len; 762#endif 763 sbappendrecord(&so->so_rcv, m); 764 sorwakeup(so); 765 } else { 766#ifdef NATM_STAT 767 natm_sodropcnt++; 768 natm_sodropbytes += m->m_pkthdr.len; 769#endif 770 m_freem(m); 771 } 772 773 goto next; 774} 775 776#if defined(__FreeBSD__) 777NETISR_SET(NETISR_NATM, natmintr); 778#endif 779 780 781/* 782 * natm0_sysctl: not used, but here in case we want to add something 783 * later... 784 */ 785 786int natm0_sysctl(name, namelen, oldp, oldlenp, newp, newlen) 787 788int *name; 789u_int namelen; 790void *oldp; 791size_t *oldlenp; 792void *newp; 793size_t newlen; 794 795{ 796 /* All sysctl names at this level are terminal. */ 797 if (namelen != 1) 798 return (ENOTDIR); 799 return (ENOPROTOOPT); 800} 801 802/* 803 * natm5_sysctl: not used, but here in case we want to add something 804 * later... 805 */ 806 807int natm5_sysctl(name, namelen, oldp, oldlenp, newp, newlen) 808 809int *name; 810u_int namelen; 811void *oldp; 812size_t *oldlenp; 813void *newp; 814size_t newlen; 815 816{ 817 /* All sysctl names at this level are terminal. */ 818 if (namelen != 1) 819 return (ENOTDIR); 820 return (ENOPROTOOPT); 821} 822