FreeBSD/Linux Kernel Cross Reference
sys/netatm/atm_if.c
1 /*-
2 * ===================================
3 * HARP | Host ATM Research Platform
4 * ===================================
5 *
6 *
7 * This Host ATM Research Platform ("HARP") file (the "Software") is
8 * made available by Network Computing Services, Inc. ("NetworkCS")
9 * "AS IS". NetworkCS does not provide maintenance, improvements or
10 * support of any kind.
11 *
12 * NETWORKCS MAKES NO WARRANTIES OR REPRESENTATIONS, EXPRESS OR IMPLIED,
13 * INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY
14 * AND FITNESS FOR A PARTICULAR PURPOSE, AS TO ANY ELEMENT OF THE
15 * SOFTWARE OR ANY SUPPORT PROVIDED IN CONNECTION WITH THIS SOFTWARE.
16 * In no event shall NetworkCS be responsible for any damages, including
17 * but not limited to consequential damages, arising from or relating to
18 * any use of the Software or related support.
19 *
20 * Copyright 1994-1998 Network Computing Services, Inc.
21 *
22 * Copies of this Software may be made, however, the above copyright
23 * notice must be reproduced on all copies.
24 */
25
26 /*
27 * Core ATM Services
28 * -----------------
29 *
30 * ATM interface management
31 */
32
33 #include <sys/cdefs.h>
34 __FBSDID("$FreeBSD: releng/5.4/sys/netatm/atm_if.c 141090 2005-01-31 23:27:04Z imp $");
35
36 #include <sys/param.h>
37 #include <sys/systm.h>
38 #include <sys/malloc.h>
39 #include <sys/sockio.h>
40 #include <sys/socket.h>
41 #include <sys/socketvar.h>
42 #include <sys/syslog.h>
43 #include <net/if.h>
44 #include <net/if_types.h>
45 #include <net/if_dl.h>
46 #include <net/route.h>
47 #include <net/bpf.h>
48 #include <netinet/in.h>
49 #include <netinet/in_var.h>
50 #include <netatm/port.h>
51 #include <netatm/queue.h>
52 #include <netatm/atm.h>
53 #include <netatm/atm_sys.h>
54 #include <netatm/atm_sap.h>
55 #include <netatm/atm_cm.h>
56 #include <netatm/atm_if.h>
57 #include <netatm/atm_ioctl.h>
58 #include <netatm/atm_sigmgr.h>
59 #include <netatm/atm_stack.h>
60 #include <netatm/atm_pcb.h>
61 #include <netatm/atm_var.h>
62
63 /*
64 * Local functions
65 */
66 static int atm_physif_ioctl(int, caddr_t, caddr_t);
67 static int atm_if_ioctl(struct ifnet *, u_long, caddr_t);
68 static int atm_ifparse(const char *, char *, size_t, int *);
69
70 /*
71 * Local variables
72 */
73 static int (*atm_ifouttbl[AF_MAX+1])
74 (struct ifnet *, KBuffer *, struct sockaddr *)
75 = {NULL};
76
77
78 /*
79 * Register an ATM physical interface
80 *
81 * Each ATM device interface must register itself here upon completing
82 * its internal initialization. This applies to both linked and loaded
83 * device drivers. The interface must be registered before a signalling
84 * manager can be attached.
85 *
86 * Arguments:
87 * cup pointer to interface's common unit structure
88 * name pointer to device name string
89 * sdp pointer to interface's stack services
90 *
91 * Returns:
92 * 0 registration successful
93 * errno registration failed - reason indicated
94 *
95 */
96 int
97 atm_physif_register(cup, name, sdp)
98 Cmn_unit *cup;
99 const char *name;
100 struct stack_defn *sdp;
101 {
102 struct atm_pif *pip;
103 int s;
104
105 /*
106 * See if we need to be initialized
107 */
108 if (!atm_init)
109 atm_initialize();
110
111 /*
112 * Make sure we're not already registered
113 */
114 if (cup->cu_flags & CUF_REGISTER) {
115 return (EALREADY);
116 }
117
118 s = splnet();
119
120 /*
121 * Make sure an interface is only registered once
122 */
123 for (pip = atm_interface_head; pip != NULL; pip = pip->pif_next) {
124 if ((cup->cu_unit == pip->pif_unit) &&
125 (strcmp(name, pip->pif_name) == 0)) {
126 (void) splx(s);
127 return (EEXIST);
128 }
129 }
130
131 /*
132 * Fill in physical interface parameters
133 */
134 pip = &cup->cu_pif;
135 pip->pif_name = name;
136 pip->pif_unit = cup->cu_unit;
137 pip->pif_flags = PIF_UP;
138 pip->pif_services = sdp;
139 pip->pif_ioctl = atm_physif_ioctl;
140
141 /*
142 * Link in the interface and mark us registered
143 */
144 LINK2TAIL(pip, struct atm_pif, atm_interface_head, pif_next);
145 cup->cu_flags |= CUF_REGISTER;
146
147 (void) splx(s);
148 return (0);
149 }
150
151
152 /*
153 * De-register an ATM physical interface
154 *
155 * Each ATM interface must de-register itself before downing the interface.
156 * The interface's signalling manager will be detached and any network
157 * interface and VCC control blocks will be freed.
158 *
159 * Arguments:
160 * cup pointer to interface's common unit structure
161 *
162 * Returns:
163 * 0 de-registration successful
164 * errno de-registration failed - reason indicated
165 *
166 */
167 int
168 atm_physif_deregister(cup)
169 Cmn_unit *cup;
170 {
171 struct atm_pif *pip = (struct atm_pif *)&cup->cu_pif;
172 Cmn_vcc *cvp;
173 int err;
174 int s = splnet();
175
176 /*
177 * Detach and deregister, if needed
178 */
179 if ((cup->cu_flags & CUF_REGISTER)) {
180
181 /*
182 * Detach from signalling manager
183 */
184 if (pip->pif_sigmgr != NULL) {
185 err = atm_sigmgr_detach(pip);
186 if (err && (err != ENOENT)) {
187 (void) splx(s);
188 return (err);
189 }
190 }
191
192 /*
193 * Make sure signalling manager is detached
194 */
195 if (pip->pif_sigmgr != NULL) {
196 (void) splx(s);
197 return (EBUSY);
198 }
199
200 /*
201 * Unlink interface
202 */
203 UNLINK(pip, struct atm_pif, atm_interface_head, pif_next);
204
205 cup->cu_flags &= ~CUF_REGISTER;
206 }
207
208 /*
209 * Free all of our network interfaces
210 */
211 atm_physif_freenifs(pip, cup->cu_nif_zone);
212
213 /*
214 * Free unit's vcc information
215 */
216 cvp = cup->cu_vcc;
217 while (cvp) {
218 uma_zfree(cup->cu_vcc_zone, cvp);
219 cvp = cvp->cv_next;
220 }
221 cup->cu_vcc = (Cmn_vcc *)NULL;
222
223 (void) splx(s);
224
225 return (0);
226 }
227
228
229 /*
230 * Free all network interfaces on a physical interface
231 *
232 * Arguments
233 * pip pointer to physical interface structure
234 *
235 * Returns
236 * none
237 *
238 */
239 void
240 atm_physif_freenifs(pip, zone)
241 struct atm_pif *pip;
242 uma_zone_t zone;
243 {
244 struct atm_nif *nip = pip->pif_nif;
245 int s = splnet();
246
247 while ( nip )
248 {
249 /*
250 * atm_nif_detach zeros pointers - save so we can
251 * walk the chain.
252 */
253 struct atm_nif *nipp = nip->nif_pnext;
254
255 /*
256 * Clean up network i/f trails
257 */
258 atm_nif_detach(nip);
259 uma_zfree(zone, nip);
260 nip = nipp;
261 }
262 pip->pif_nif = (struct atm_nif *)NULL;
263
264 (void) splx(s);
265
266 return;
267 }
268
269 /*
270 * Handle physical interface ioctl's
271 *
272 * See <netatm/atm_ioctl.h> for definitions.
273 *
274 * Called at splnet.
275 *
276 * Arguments:
277 * code Ioctl function (sub)code
278 * data Data block. On input contains command,
279 * on output, contains results
280 * arg Optional code specific arguments
281 *
282 * Returns:
283 * 0 Request processed successfully
284 * errno Request failed - reason code
285 *
286 */
287 static int
288 atm_physif_ioctl(code, data, arg)
289 int code;
290 caddr_t data;
291 caddr_t arg;
292 {
293 struct atminfreq *aip = (struct atminfreq *)data;
294 struct atmsetreq *asr = (struct atmsetreq *)data;
295 struct atm_pif *pip;
296 struct atm_nif *nip;
297 struct sigmgr *smp;
298 struct siginst *sip;
299 struct ifnet *ifp;
300 Cmn_unit *cup;
301 Atm_config *acp;
302 caddr_t buf = aip->air_buf_addr;
303 struct air_phy_stat_rsp *apsp;
304 struct air_int_rsp apr;
305 struct air_netif_rsp anr;
306 struct air_cfg_rsp acr;
307 u_int count;
308 size_t len;
309 size_t buf_len = aip->air_buf_len;
310 int err = 0;
311 char ifname[2*IFNAMSIZ];
312 struct ifaddr *ifa;
313 struct in_ifaddr *ia;
314 struct sockaddr_dl *sdl;
315
316
317 switch ( aip->air_opcode ) {
318
319 case AIOCS_INF_INT:
320 /*
321 * Get physical interface information
322 */
323 aip = (struct atminfreq *)data;
324 pip = (struct atm_pif *)arg;
325
326 /*
327 * Make sure there's room in user buffer
328 */
329 if (aip->air_buf_len < sizeof(apr)) {
330 err = ENOSPC;
331 break;
332 }
333
334 /*
335 * Fill in info to be returned
336 */
337 bzero((caddr_t)&apr, sizeof(apr));
338 smp = pip->pif_sigmgr;
339 sip = pip->pif_siginst;
340 (void) snprintf(apr.anp_intf, sizeof(apr.anp_intf),
341 "%s%d", pip->pif_name, pip->pif_unit );
342 if ( pip->pif_nif )
343 {
344 strcpy(apr.anp_nif_pref, pip->pif_nif->nif_if.if_dname);
345
346 nip = pip->pif_nif;
347 while ( nip ) {
348 apr.anp_nif_cnt++;
349 nip = nip->nif_pnext;
350 }
351 }
352 if (sip) {
353 ATM_ADDR_COPY(&sip->si_addr, &apr.anp_addr);
354 ATM_ADDR_COPY(&sip->si_subaddr, &apr.anp_subaddr);
355 apr.anp_sig_proto = smp->sm_proto;
356 apr.anp_sig_state = sip->si_state;
357 }
358
359 /*
360 * Copy data to user buffer
361 */
362 err = copyout((caddr_t)&apr, aip->air_buf_addr, sizeof(apr));
363 if (err)
364 break;
365
366 /*
367 * Update buffer pointer/count
368 */
369 aip->air_buf_addr += sizeof(apr);
370 aip->air_buf_len -= sizeof(apr);
371 break;
372
373 case AIOCS_INF_NIF:
374 /*
375 * Get network interface information
376 */
377 aip = (struct atminfreq *)data;
378 nip = (struct atm_nif *)arg;
379 ifp = &nip->nif_if;
380 pip = nip->nif_pif;
381
382 /*
383 * Make sure there's room in user buffer
384 */
385 if (aip->air_buf_len < sizeof(anr)) {
386 err = ENOSPC;
387 break;
388 }
389
390 /*
391 * Fill in info to be returned
392 */
393 bzero((caddr_t)&anr, sizeof(anr));
394 (void) snprintf(anr.anp_intf, sizeof(anr.anp_intf),
395 "%s%d", ifp->if_dname, ifp->if_dunit);
396 IFP_TO_IA(ifp, ia);
397 if (ia) {
398 anr.anp_proto_addr = *ia->ia_ifa.ifa_addr;
399 }
400 (void) snprintf(anr.anp_phy_intf, sizeof(anr.anp_phy_intf),
401 "%s%d", pip->pif_name, pip->pif_unit);
402
403 /*
404 * Copy data to user buffer
405 */
406 err = copyout((caddr_t)&anr, aip->air_buf_addr, sizeof(anr));
407 if (err)
408 break;
409
410 /*
411 * Update buffer pointer/count
412 */
413 aip->air_buf_addr += sizeof(anr);
414 aip->air_buf_len -= sizeof(anr);
415 break;
416
417 case AIOCS_INF_PIS:
418 /*
419 * Get per interface statistics
420 */
421 pip = (struct atm_pif *)arg;
422 if ( pip == NULL )
423 return ( ENXIO );
424 snprintf ( ifname, sizeof(ifname),
425 "%s%d", pip->pif_name, pip->pif_unit );
426
427 /*
428 * Cast response into users buffer
429 */
430 apsp = (struct air_phy_stat_rsp *)buf;
431
432 /*
433 * Sanity check
434 */
435 len = sizeof ( struct air_phy_stat_rsp );
436 if ( buf_len < len )
437 return ( ENOSPC );
438
439 /*
440 * Copy interface name into response
441 */
442 if ((err = copyout ( ifname, apsp->app_intf, IFNAMSIZ)) != 0)
443 break;
444
445 /*
446 * Copy counters
447 */
448 if ((err = copyout(&pip->pif_ipdus, &apsp->app_ipdus,
449 len - sizeof(apsp->app_intf))) != 0)
450 break;
451
452 /*
453 * Adjust buffer elements
454 */
455 buf += len;
456 buf_len -= len;
457
458 aip->air_buf_addr = buf;
459 aip->air_buf_len = buf_len;
460 break;
461
462 case AIOCS_SET_NIF:
463 /*
464 * Set NIF - allow user to configure 1 or more logical
465 * interfaces per physical interface.
466 */
467
468 /*
469 * Get pointer to physical interface structure from
470 * ioctl argument.
471 */
472 pip = (struct atm_pif *)arg;
473 cup = (Cmn_unit *)pip;
474
475 /*
476 * Sanity check - are we already connected to something?
477 */
478 if ( pip->pif_sigmgr )
479 {
480 err = EBUSY;
481 break;
482 }
483
484 /*
485 * Free any previously allocated NIFs
486 */
487 atm_physif_freenifs(pip, cup->cu_nif_zone);
488
489 /*
490 * Add list of interfaces
491 */
492 for ( count = 0; count < asr->asr_nif_cnt; count++ )
493 {
494 nip = uma_zalloc(cup->cu_nif_zone, M_WAITOK | M_ZERO);
495 if ( nip == NULL )
496 {
497 /*
498 * Destroy any successful nifs
499 */
500 atm_physif_freenifs(pip, cup->cu_nif_zone);
501 err = ENOMEM;
502 break;
503 }
504
505 nip->nif_pif = pip;
506 ifp = &nip->nif_if;
507
508 strcpy ( nip->nif_name, asr->asr_nif_pref );
509 nip->nif_sel = count;
510
511 if_initname(ifp, nip->nif_name, count);
512 ifp->if_mtu = ATM_NIF_MTU;
513 ifp->if_flags = IFF_UP | IFF_BROADCAST | IFF_RUNNING;
514 ifp->if_output = atm_ifoutput;
515 ifp->if_ioctl = atm_if_ioctl;
516 ifp->if_snd.ifq_maxlen = ifqmaxlen;
517 /*
518 * Set if_type and if_baudrate
519 */
520 ifp->if_type = IFT_IPOVERATM;
521 switch ( cup->cu_config.ac_media ) {
522 case MEDIA_TAXI_100:
523 ifp->if_baudrate = 100000000;
524 break;
525 case MEDIA_TAXI_140:
526 ifp->if_baudrate = 140000000;
527 break;
528 case MEDIA_OC3C:
529 case MEDIA_OC12C:
530 case MEDIA_UTP155:
531 ifp->if_baudrate = 155000000;
532 break;
533 case MEDIA_UTP25:
534 ifp->if_baudrate = 25600000;
535 break;
536 case MEDIA_VIRTUAL:
537 ifp->if_baudrate = 100000000; /* XXX */
538 break;
539 case MEDIA_DSL:
540 ifp->if_baudrate = 2500000; /* XXX */
541 break;
542 case MEDIA_UNKNOWN:
543 ifp->if_baudrate = 9600;
544 break;
545 }
546 if ((err = atm_nif_attach(nip)) != 0) {
547 uma_zfree(cup->cu_nif_zone, nip);
548 /*
549 * Destroy any successful nifs
550 */
551 atm_physif_freenifs(pip, cup->cu_nif_zone);
552 break;
553 }
554 /*
555 * Set macaddr in <Link> address
556 */
557 ifp->if_addrlen = 6;
558 ifa = ifaddr_byindex(ifp->if_index);
559 if ( ifa ) {
560 sdl = (struct sockaddr_dl *)
561 ifa->ifa_addr;
562 sdl->sdl_type = IFT_ETHER;
563 sdl->sdl_alen = ifp->if_addrlen;
564 bcopy ( (caddr_t)&cup->cu_config.ac_macaddr,
565 LLADDR(sdl), ifp->if_addrlen );
566 }
567 }
568 break;
569
570 case AIOCS_INF_CFG:
571 /*
572 * Get adapter configuration information
573 */
574 aip = (struct atminfreq *)data;
575 pip = (struct atm_pif *)arg;
576 cup = (Cmn_unit *)pip;
577 acp = &cup->cu_config;
578
579 /*
580 * Make sure there's room in user buffer
581 */
582 if (aip->air_buf_len < sizeof(acr)) {
583 err = ENOSPC;
584 break;
585 }
586
587 /*
588 * Fill in info to be returned
589 */
590 bzero((caddr_t)&acr, sizeof(acr));
591 (void) snprintf(acr.acp_intf, sizeof(acr.acp_intf),
592 "%s%d", pip->pif_name, pip->pif_unit);
593 bcopy((caddr_t)acp, (caddr_t)&acr.acp_cfg,
594 sizeof(Atm_config));
595
596 /*
597 * Copy data to user buffer
598 */
599 err = copyout((caddr_t)&acr, aip->air_buf_addr,
600 sizeof(acr));
601 if (err)
602 break;
603
604 /*
605 * Update buffer pointer/count
606 */
607 aip->air_buf_addr += sizeof(acr);
608 aip->air_buf_len -= sizeof(acr);
609 break;
610
611 case AIOCS_INF_VST:
612 /*
613 * Pass off to device-specific handler
614 */
615 cup = (Cmn_unit *)arg;
616 if (cup == NULL)
617 err = ENXIO;
618 else
619 err = (*cup->cu_ioctl)(code, data, arg);
620 break;
621
622 default:
623 err = ENOSYS;
624 }
625
626 return ( err );
627 }
628
629
630 /*
631 * Register a Network Convergence Module
632 *
633 * Each ATM network convergence module must register itself here before
634 * it will receive network interface status notifications.
635 *
636 * Arguments:
637 * ncp pointer to network convergence definition structure
638 *
639 * Returns:
640 * 0 registration successful
641 * errno registration failed - reason indicated
642 *
643 */
644 int
645 atm_netconv_register(ncp)
646 struct atm_ncm *ncp;
647 {
648 struct atm_ncm *tdp;
649 int s = splnet();
650
651 /*
652 * See if we need to be initialized
653 */
654 if (!atm_init)
655 atm_initialize();
656
657 /*
658 * Validate protocol family
659 */
660 if (ncp->ncm_family > AF_MAX) {
661 (void) splx(s);
662 return (EINVAL);
663 }
664
665 /*
666 * Ensure no duplicates
667 */
668 for (tdp = atm_netconv_head; tdp != NULL; tdp = tdp->ncm_next) {
669 if (tdp->ncm_family == ncp->ncm_family) {
670 (void) splx(s);
671 return (EEXIST);
672 }
673 }
674
675 /*
676 * Add module to list
677 */
678 LINK2TAIL(ncp, struct atm_ncm, atm_netconv_head, ncm_next);
679
680 /*
681 * Add new interface output function
682 */
683 atm_ifouttbl[ncp->ncm_family] = ncp->ncm_ifoutput;
684
685 (void) splx(s);
686 return (0);
687 }
688
689
690 /*
691 * De-register an ATM Network Convergence Module
692 *
693 * Each ATM network convergence provider must de-register its registered
694 * service(s) before terminating. Specifically, loaded kernel modules
695 * must de-register their services before unloading themselves.
696 *
697 * Arguments:
698 * ncp pointer to network convergence definition structure
699 *
700 * Returns:
701 * 0 de-registration successful
702 * errno de-registration failed - reason indicated
703 *
704 */
705 int
706 atm_netconv_deregister(ncp)
707 struct atm_ncm *ncp;
708 {
709 int found, s = splnet();
710
711 /*
712 * Remove module from list
713 */
714 UNLINKF(ncp, struct atm_ncm, atm_netconv_head, ncm_next, found);
715
716 if (!found) {
717 (void) splx(s);
718 return (ENOENT);
719 }
720
721 /*
722 * Remove module's interface output function
723 */
724 atm_ifouttbl[ncp->ncm_family] = NULL;
725
726 (void) splx(s);
727 return (0);
728 }
729
730
731 /*
732 * Attach an ATM Network Interface
733 *
734 * Before an ATM network interface can be used by the system, the owning
735 * device interface must attach the network interface using this function.
736 * The physical interface for this network interface must have been previously
737 * registered (using atm_interface_register). The network interface will be
738 * added to the kernel's interface list and to the physical interface's list.
739 * The caller is responsible for initializing the control block fields.
740 *
741 * Arguments:
742 * nip pointer to atm network interface control block
743 *
744 * Returns:
745 * 0 attach successful
746 * errno attach failed - reason indicated
747 *
748 */
749 int
750 atm_nif_attach(nip)
751 struct atm_nif *nip;
752 {
753 struct atm_pif *pip, *pip2;
754 struct ifnet *ifp;
755 struct atm_ncm *ncp;
756 int s;
757
758 ifp = &nip->nif_if;
759 pip = nip->nif_pif;
760
761 s = splimp();
762
763 /*
764 * Verify physical interface is registered
765 */
766 for (pip2 = atm_interface_head; pip2 != NULL; pip2 = pip2->pif_next) {
767 if (pip == pip2)
768 break;
769 }
770 if ((pip == NULL) || (pip2 == NULL)) {
771 (void) splx(s);
772 return (EFAULT);
773 }
774
775 /*
776 * Add to system interface list
777 */
778 if_attach(ifp);
779
780 /*
781 * Add to BPF interface list
782 * DLT_ATM_RFC_1483 cannot be used because both NULL and LLC/SNAP could
783 * be provisioned
784 */
785 bpfattach(ifp, DLT_ATM_CLIP, T_ATM_LLC_MAX_LEN);
786
787 /*
788 * Add to physical interface list
789 */
790 LINK2TAIL(nip, struct atm_nif, pip->pif_nif, nif_pnext);
791
792 /*
793 * Notify network convergence modules of new network i/f
794 */
795 for (ncp = atm_netconv_head; ncp; ncp = ncp->ncm_next) {
796 int err;
797
798 err = (*ncp->ncm_stat)(NCM_ATTACH, nip, 0);
799 if (err) {
800 atm_nif_detach(nip);
801 (void) splx(s);
802 return (err);
803 }
804 }
805
806 (void) splx(s);
807 return (0);
808 }
809
810
811 /*
812 * Detach an ATM Network Interface
813 *
814 * Before an ATM network interface control block can be freed, all kernel
815 * references to/from this block must be released. This function will delete
816 * all routing references to the interface and free all interface addresses
817 * for the interface. The network interface will then be removed from the
818 * kernel's interface list and from the owning physical interface's list.
819 * The caller is responsible for free'ing the control block.
820 *
821 * Arguments:
822 * nip pointer to atm network interface control block
823 *
824 * Returns:
825 * none
826 *
827 */
828 void
829 atm_nif_detach(nip)
830 struct atm_nif *nip;
831 {
832 struct atm_ncm *ncp;
833 int s;
834 struct ifnet *ifp = &nip->nif_if;
835
836 s = splimp();
837
838 /*
839 * Notify convergence modules of network i/f demise
840 */
841 for (ncp = atm_netconv_head; ncp; ncp = ncp->ncm_next) {
842 (void) (*ncp->ncm_stat)(NCM_DETACH, nip, 0);
843 }
844
845 /*
846 * Remove from BPF interface list
847 */
848 bpfdetach(ifp);
849
850 /*
851 * Free all interface routes and addresses,
852 * delete all remaining routes using this interface,
853 * then remove from the system interface list
854 */
855 if_detach(ifp);
856
857 /*
858 * Remove from physical interface list
859 */
860 UNLINK(nip, struct atm_nif, nip->nif_pif->pif_nif, nif_pnext);
861
862 (void) splx(s);
863 }
864
865 /*
866 * Set an ATM Network Interface address
867 *
868 * This is called from a device interface when processing an SIOCSIFADDR
869 * ioctl request. We just notify all convergence modules of the new address
870 * and hope everyone has non-overlapping interests, since if someone reports
871 * an error we don't go back and tell everyone to undo the change.
872 *
873 * Arguments:
874 * nip pointer to atm network interface control block
875 * ifa pointer to new interface address
876 *
877 * Returns:
878 * 0 set successful
879 * errno set failed - reason indicated
880 *
881 */
882 int
883 atm_nif_setaddr(nip, ifa)
884 struct atm_nif *nip;
885 struct ifaddr *ifa;
886 {
887 struct atm_ncm *ncp;
888 int err = 0, s = splnet();
889
890 /*
891 * Notify convergence modules of network i/f change
892 */
893 for (ncp = atm_netconv_head; ncp; ncp = ncp->ncm_next) {
894 err = (*ncp->ncm_stat)(NCM_SETADDR, nip, (intptr_t)ifa);
895 if (err)
896 break;
897 }
898 (void) splx(s);
899
900 return (err);
901 }
902
903
904 /*
905 * ATM Interface Packet Output
906 *
907 * All ATM network interfaces must have their ifnet if_output address set to
908 * this function. Since no existing network layer code is to be modified
909 * for ATM support, this function serves as the hook to allow network output
910 * packets to be assigned to their proper outbound VCC. Each network address
911 * family which is to be supported over ATM must be assigned an output
912 * packet processing function via atm_netconv_register().
913 *
914 * Arguments:
915 * ifp pointer to ifnet structure
916 * m pointer to packet buffer chain to be output
917 * dst pointer to packet's network destination address
918 *
919 * Returns:
920 * 0 packet queued to interface
921 * errno output failed - reason indicated
922 *
923 */
924 int
925 atm_ifoutput(ifp, m, dst, rt)
926 struct ifnet *ifp;
927 KBuffer *m;
928 struct sockaddr *dst;
929 struct rtentry *rt;
930 {
931 u_short fam = dst->sa_family;
932 int (*func)(struct ifnet *, KBuffer *,
933 struct sockaddr *);
934
935 /*
936 * Validate address family
937 */
938 if (fam > AF_MAX) {
939 KB_FREEALL(m);
940 return (EAFNOSUPPORT);
941 }
942
943 /*
944 * Hand packet off for dst-to-VCC mapping
945 */
946 func = atm_ifouttbl[fam];
947 if (func == NULL) {
948 KB_FREEALL(m);
949 return (EAFNOSUPPORT);
950 }
951 return ((*func)(ifp, m, dst));
952 }
953
954
955 /*
956 * Handle interface ioctl requests.
957 *
958 * Arguments:
959 * ifp pointer to network interface structure
960 * cmd IOCTL cmd
961 * data arguments to/from ioctl
962 *
963 * Returns:
964 * error errno value
965 */
966 static int
967 atm_if_ioctl(ifp, cmd, data)
968 struct ifnet *ifp;
969 u_long cmd;
970 caddr_t data;
971 {
972 register struct ifreq *ifr = (struct ifreq *)data;
973 struct atm_nif *nip = (struct atm_nif *)ifp;
974 int error = 0;
975 int s = splnet();
976
977 switch ( cmd )
978 {
979 case SIOCGIFADDR:
980 bcopy ( (caddr_t)&(nip->nif_pif->pif_macaddr),
981 (caddr_t)ifr->ifr_addr.sa_data,
982 sizeof(struct mac_addr) );
983 break;
984
985 case SIOCSIFADDR:
986 error = atm_nif_setaddr ( nip, (struct ifaddr *)data);
987 ifp->if_flags |= IFF_UP | IFF_RUNNING | IFF_BROADCAST;
988 break;
989
990 case SIOCGIFFLAGS:
991 *(int *)data = ifp->if_flags;
992 break;
993
994 case SIOCSIFFLAGS:
995 break;
996
997 default:
998 error = EINVAL;
999 break;
1000 }
1001
1002 (void) splx(s);
1003 return ( error );
1004 }
1005
1006
1007 /*
1008 * Parse interface name
1009 *
1010 * Parses an interface name string into a name and a unit component.
1011 *
1012 * Arguments:
1013 * name pointer to interface name string
1014 * namep address to store interface name
1015 * size size available at namep
1016 * unitp address to store interface unit number
1017 *
1018 * Returns:
1019 * 0 name parsed
1020 * else parse error
1021 *
1022 */
1023 static int
1024 atm_ifparse(const char *name, char *namep, size_t size, int *unitp)
1025 {
1026 const char *cp;
1027 char *np;
1028 size_t len = 0;
1029 int unit = 0;
1030
1031 /*
1032 * Separate supplied string into name and unit parts.
1033 */
1034 cp = name;
1035 np = namep;
1036 while (*cp) {
1037 if (*cp >= '' && *cp <= '9')
1038 break;
1039 if (++len >= size)
1040 return (-1);
1041 *np++ = *cp++;
1042 }
1043 *np = '\0';
1044 while (*cp && *cp >= '' && *cp <= '9')
1045 unit = 10 * unit + *cp++ - '';
1046
1047 *unitp = unit;
1048
1049 return (0);
1050 }
1051
1052
1053 /*
1054 * Locate ATM physical interface via name
1055 *
1056 * Uses the supplied interface name string to locate a registered
1057 * ATM physical interface.
1058 *
1059 * Arguments:
1060 * name pointer to interface name string
1061 *
1062 * Returns:
1063 * 0 interface not found
1064 * else pointer to atm physical interface structure
1065 *
1066 */
1067 struct atm_pif *
1068 atm_pifname(name)
1069 char *name;
1070 {
1071 struct atm_pif *pip;
1072 char n[IFNAMSIZ];
1073 int unit;
1074
1075 /*
1076 * Break down name
1077 */
1078 if (atm_ifparse(name, n, sizeof(n), &unit))
1079 return ((struct atm_pif *)0);
1080
1081 /*
1082 * Look for the physical interface
1083 */
1084 for (pip = atm_interface_head; pip; pip = pip->pif_next) {
1085 if ((pip->pif_unit == unit) && (strcmp(pip->pif_name, n) == 0))
1086 break;
1087 }
1088
1089 return (pip);
1090 }
1091
1092
1093 /*
1094 * Locate ATM network interface via name
1095 *
1096 * Uses the supplied interface name string to locate an ATM network interface.
1097 *
1098 * Arguments:
1099 * name pointer to interface name string
1100 *
1101 * Returns:
1102 * 0 interface not found
1103 * else pointer to atm network interface structure
1104 *
1105 */
1106 struct atm_nif *
1107 atm_nifname(name)
1108 char *name;
1109 {
1110 struct atm_pif *pip;
1111 struct atm_nif *nip;
1112 char n[IFNAMSIZ];
1113 int unit;
1114
1115 /*
1116 * Break down name
1117 */
1118 if (atm_ifparse(name, n, sizeof(n), &unit))
1119 return ((struct atm_nif *)0);
1120
1121 /*
1122 * Search thru each physical interface
1123 */
1124 for (pip = atm_interface_head; pip; pip = pip->pif_next) {
1125 /*
1126 * Looking for network interface
1127 */
1128 for (nip = pip->pif_nif; nip; nip = nip->nif_pnext) {
1129 struct ifnet *ifp = (struct ifnet *)nip;
1130 if ((ifp->if_dunit == unit) &&
1131 (strcmp(ifp->if_dname, n) == 0))
1132 return (nip);
1133 }
1134 }
1135 return (NULL);
1136 }
Cache object: ba527b8e7e99fe824a4b939afd1dec2d
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