1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21 /*
22 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
23 */
24
25 /*
26 * Data-Link Driver
27 */
28
29 #include <sys/conf.h>
30 #include <sys/mkdev.h>
31 #include <sys/modctl.h>
32 #include <sys/stat.h>
33 #include <sys/dld_impl.h>
34 #include <sys/dld_ioc.h>
35 #include <sys/dls_impl.h>
36 #include <sys/softmac.h>
37 #include <sys/mac.h>
38 #include <sys/mac_ether.h>
39 #include <sys/mac_client.h>
40 #include <sys/mac_client_impl.h>
41 #include <sys/mac_client_priv.h>
42 #include <inet/common.h>
43 #include <sys/policy.h>
44 #include <sys/priv_names.h>
45 #include <sys/zone.h>
46 #include <sys/sysmacros.h>
47
48 static void drv_init(void);
49 static int drv_fini(void);
50
51 static int drv_getinfo(dev_info_t *, ddi_info_cmd_t, void *, void **);
52 static int drv_attach(dev_info_t *, ddi_attach_cmd_t);
53 static int drv_detach(dev_info_t *, ddi_detach_cmd_t);
54
55 /*
56 * Secure objects declarations
57 */
58 #define SECOBJ_WEP_HASHSZ 67
59 static krwlock_t drv_secobj_lock;
60 static kmem_cache_t *drv_secobj_cachep;
61 static mod_hash_t *drv_secobj_hash;
62 static void drv_secobj_init(void);
63 static void drv_secobj_fini(void);
64 static int drv_ioc_setap(datalink_id_t, struct dlautopush *);
65 static int drv_ioc_getap(datalink_id_t, struct dlautopush *);
66 static int drv_ioc_clrap(datalink_id_t);
67
68
69 /*
70 * The following entry points are private to dld and are used for control
71 * operations only. The entry points exported to mac drivers are defined
72 * in dld_str.c. Refer to the comment on top of dld_str.c for details.
73 */
74 static int drv_open(dev_t *, int, int, cred_t *);
75 static int drv_ioctl(dev_t, int, intptr_t, int, cred_t *, int *);
76
77 static dev_info_t *dld_dip; /* dev_info_t for the driver */
78 uint32_t dld_opt = 0; /* Global options */
79
80 #define NAUTOPUSH 32
81 static mod_hash_t *dld_ap_hashp;
82 static krwlock_t dld_ap_hash_lock;
83
84 static struct cb_ops drv_cb_ops = {
85 drv_open, /* open */
86 nulldev, /* close */
87 nulldev, /* strategy */
88 nulldev, /* print */
89 nodev, /* dump */
90 nodev, /* read */
91 nodev, /* write */
92 drv_ioctl, /* ioctl */
93 nodev, /* devmap */
94 nodev, /* mmap */
95 nodev, /* segmap */
96 nochpoll, /* poll */
97 ddi_prop_op, /* cb_prop_op */
98 0, /* streamtab */
99 D_MP /* Driver compatibility flag */
100 };
101
102 static struct dev_ops drv_ops = {
103 DEVO_REV, /* devo_rev */
104 0, /* refcnt */
105 drv_getinfo, /* get_dev_info */
106 nulldev, /* identify */
107 nulldev, /* probe */
108 drv_attach, /* attach */
109 drv_detach, /* detach */
110 nodev, /* reset */
111 &drv_cb_ops, /* driver operations */
112 NULL, /* bus operations */
113 nodev, /* dev power */
114 ddi_quiesce_not_supported, /* dev quiesce */
115 };
116
117 /*
118 * Module linkage information for the kernel.
119 */
120 static struct modldrv drv_modldrv = {
121 &mod_driverops,
122 DLD_INFO,
123 &drv_ops
124 };
125
126 static struct modlinkage drv_modlinkage = {
127 MODREV_1,
128 { &drv_modldrv,
129 NULL }
130 };
131
132 int
133 _init(void)
134 {
135 return (mod_install(&drv_modlinkage));
136 }
137
138 int
139 _fini(void)
140 {
141 return (mod_remove(&drv_modlinkage));
142 }
143
144 int
145 _info(struct modinfo *modinfop)
146 {
147 return (mod_info(&drv_modlinkage, modinfop));
148 }
149
150 /*
151 * Initialize component modules.
152 */
153 static void
154 drv_init(void)
155 {
156 drv_secobj_init();
157 dld_str_init();
158
159 /*
160 * Create a hash table for autopush configuration.
161 */
162 dld_ap_hashp = mod_hash_create_idhash("dld_autopush_hash",
163 NAUTOPUSH, mod_hash_null_valdtor);
164
165 ASSERT(dld_ap_hashp != NULL);
166 rw_init(&dld_ap_hash_lock, NULL, RW_DRIVER, NULL);
167 }
168
169 /* ARGSUSED */
170 static uint_t
171 drv_ap_exist(mod_hash_key_t key, mod_hash_val_t *val, void *arg)
172 {
173 boolean_t *pexist = arg;
174
175 *pexist = B_TRUE;
176 return (MH_WALK_TERMINATE);
177 }
178
179 static int
180 drv_fini(void)
181 {
182 int err;
183 boolean_t exist = B_FALSE;
184
185 rw_enter(&dld_ap_hash_lock, RW_READER);
186 mod_hash_walk(dld_ap_hashp, drv_ap_exist, &exist);
187 rw_exit(&dld_ap_hash_lock);
188 if (exist)
189 return (EBUSY);
190
191 if ((err = dld_str_fini()) != 0)
192 return (err);
193
194 drv_secobj_fini();
195 mod_hash_destroy_idhash(dld_ap_hashp);
196 rw_destroy(&dld_ap_hash_lock);
197 return (0);
198 }
199
200 /*
201 * devo_getinfo: getinfo(9e)
202 */
203 /*ARGSUSED*/
204 static int
205 drv_getinfo(dev_info_t *dip, ddi_info_cmd_t cmd, void *arg, void **resp)
206 {
207 if (dld_dip == NULL)
208 return (DDI_FAILURE);
209
210 switch (cmd) {
211 case DDI_INFO_DEVT2INSTANCE:
212 *resp = 0;
213 break;
214 case DDI_INFO_DEVT2DEVINFO:
215 *resp = dld_dip;
216 break;
217 default:
218 return (DDI_FAILURE);
219 }
220
221 return (DDI_SUCCESS);
222 }
223
224 /*
225 * Check properties to set options. (See dld.h for property definitions).
226 */
227 static void
228 drv_set_opt(dev_info_t *dip)
229 {
230 if (ddi_prop_get_int(DDI_DEV_T_ANY, dip, DDI_PROP_DONTPASS,
231 DLD_PROP_NO_FASTPATH, 0) != 0) {
232 dld_opt |= DLD_OPT_NO_FASTPATH;
233 }
234
235 if (ddi_prop_get_int(DDI_DEV_T_ANY, dip, DDI_PROP_DONTPASS,
236 DLD_PROP_NO_POLL, 0) != 0) {
237 dld_opt |= DLD_OPT_NO_POLL;
238 }
239
240 if (ddi_prop_get_int(DDI_DEV_T_ANY, dip, DDI_PROP_DONTPASS,
241 DLD_PROP_NO_ZEROCOPY, 0) != 0) {
242 dld_opt |= DLD_OPT_NO_ZEROCOPY;
243 }
244
245 if (ddi_prop_get_int(DDI_DEV_T_ANY, dip, DDI_PROP_DONTPASS,
246 DLD_PROP_NO_SOFTRING, 0) != 0) {
247 dld_opt |= DLD_OPT_NO_SOFTRING;
248 }
249 }
250
251 /*
252 * devo_attach: attach(9e)
253 */
254 static int
255 drv_attach(dev_info_t *dip, ddi_attach_cmd_t cmd)
256 {
257 if (cmd != DDI_ATTACH)
258 return (DDI_FAILURE);
259
260 ASSERT(ddi_get_instance(dip) == 0);
261 drv_init();
262 drv_set_opt(dip);
263
264 /*
265 * Create control node. DLPI provider nodes will be created on demand.
266 */
267 if (ddi_create_minor_node(dip, DLD_CONTROL_MINOR_NAME, S_IFCHR,
268 DLD_CONTROL_MINOR, DDI_PSEUDO, 0) != DDI_SUCCESS)
269 return (DDI_FAILURE);
270
271 dld_dip = dip;
272
273 /*
274 * Log the fact that the driver is now attached.
275 */
276 ddi_report_dev(dip);
277 return (DDI_SUCCESS);
278 }
279
280 /*
281 * devo_detach: detach(9e)
282 */
283 static int
284 drv_detach(dev_info_t *dip, ddi_detach_cmd_t cmd)
285 {
286 if (cmd != DDI_DETACH)
287 return (DDI_FAILURE);
288
289 ASSERT(dld_dip == dip);
290 if (drv_fini() != 0)
291 return (DDI_FAILURE);
292
293 /*
294 * Remove the control node.
295 */
296 ddi_remove_minor_node(dip, DLD_CONTROL_MINOR_NAME);
297 dld_dip = NULL;
298
299 return (DDI_SUCCESS);
300 }
301
302 /*
303 * dld control node open procedure.
304 */
305 /*ARGSUSED*/
306 static int
307 drv_open(dev_t *devp, int flag, int sflag, cred_t *credp)
308 {
309 /*
310 * Only the control node can be opened.
311 */
312 if (getminor(*devp) != DLD_CONTROL_MINOR)
313 return (ENODEV);
314 return (0);
315 }
316
317 /*
318 * Verify if the caller is allowed to modify a link of the given class.
319 */
320 static int
321 drv_ioc_checkprivs(datalink_class_t class, cred_t *cred)
322 {
323 if (class == DATALINK_CLASS_IPTUN)
324 return (secpolicy_iptun_config(cred));
325 return (secpolicy_dl_config(cred));
326 }
327
328 /*
329 * DLDIOC_ATTR
330 */
331 /* ARGSUSED */
332 static int
333 drv_ioc_attr(void *karg, intptr_t arg, int mode, cred_t *cred, int *rvalp)
334 {
335 dld_ioc_attr_t *diap = karg;
336 dls_dl_handle_t dlh;
337 dls_link_t *dlp;
338 zoneid_t zoneid = crgetzoneid(cred);
339 int err;
340 mac_perim_handle_t mph;
341
342 if (zoneid != GLOBAL_ZONEID &&
343 zone_check_datalink(&zoneid, diap->dia_linkid) != 0)
344 return (ENOENT);
345
346 if ((err = dls_devnet_hold_tmp(diap->dia_linkid, &dlh)) != 0)
347 return (err);
348
349 if ((err = mac_perim_enter_by_macname(
350 dls_devnet_mac(dlh), &mph)) != 0) {
351 dls_devnet_rele_tmp(dlh);
352 return (err);
353 }
354
355 if ((err = dls_link_hold(dls_devnet_mac(dlh), &dlp)) != 0) {
356 mac_perim_exit(mph);
357 dls_devnet_rele_tmp(dlh);
358 return (err);
359 }
360
361 mac_sdu_get(dlp->dl_mh, NULL, &diap->dia_max_sdu);
362
363 dls_link_rele(dlp);
364 mac_perim_exit(mph);
365 dls_devnet_rele_tmp(dlh);
366
367 return (0);
368 }
369
370 /*
371 * DLDIOC_PHYS_ATTR
372 */
373 /* ARGSUSED */
374 static int
375 drv_ioc_phys_attr(void *karg, intptr_t arg, int mode, cred_t *cred, int *rvalp)
376 {
377 dld_ioc_phys_attr_t *dipp = karg;
378 int err;
379 dls_dl_handle_t dlh;
380 dls_dev_handle_t ddh;
381 dev_t phydev;
382 zoneid_t zoneid = crgetzoneid(cred);
383
384 if (zoneid != GLOBAL_ZONEID &&
385 zone_check_datalink(&zoneid, dipp->dip_linkid) != 0)
386 return (ENOENT);
387
388 /*
389 * Every physical link should have its physical dev_t kept in the
390 * daemon. If not, it is not a valid physical link.
391 */
392 if (dls_mgmt_get_phydev(dipp->dip_linkid, &phydev) != 0)
393 return (EINVAL);
394
395 /*
396 * Although this is a valid physical link, it might already be removed
397 * by DR or during system shutdown. softmac_hold_device() would return
398 * ENOENT in this case.
399 */
400 if ((err = softmac_hold_device(phydev, &ddh)) != 0)
401 return (err);
402
403 if (dls_devnet_hold_tmp(dipp->dip_linkid, &dlh) != 0) {
404 /*
405 * Although this is an active physical link, its link type is
406 * not supported by GLDv3, and therefore it does not have
407 * vanity naming support.
408 */
409 dipp->dip_novanity = B_TRUE;
410 } else {
411 dipp->dip_novanity = B_FALSE;
412 dls_devnet_rele_tmp(dlh);
413 }
414 /*
415 * Get the physical device name from the major number and the instance
416 * number derived from phydev.
417 */
418 (void) snprintf(dipp->dip_dev, MAXLINKNAMELEN, "%s%d",
419 ddi_major_to_name(getmajor(phydev)), getminor(phydev) - 1);
420
421 softmac_rele_device(ddh);
422 return (0);
423 }
424
425 /* ARGSUSED */
426 static int
427 drv_ioc_hwgrpget(void *karg, intptr_t arg, int mode, cred_t *cred, int *rvalp)
428 {
429 dld_ioc_hwgrpget_t *hwgrpp = karg;
430 dld_hwgrpinfo_t hwgrp, *hip;
431 mac_handle_t mh = NULL;
432 int i, err, rgrpnum, tgrpnum;
433 uint_t bytes_left;
434 int totgrps = 0;
435 zoneid_t zoneid = crgetzoneid(cred);
436
437 if (zoneid != GLOBAL_ZONEID &&
438 zone_check_datalink(&zoneid, hwgrpp->dih_linkid) != 0)
439 return (ENOENT);
440
441 hwgrpp->dih_n_groups = 0;
442 err = mac_open_by_linkid(hwgrpp->dih_linkid, &mh);
443 if (err != 0)
444 goto done;
445
446 hip = (dld_hwgrpinfo_t *)
447 ((uchar_t *)arg + sizeof (dld_ioc_hwgrpget_t));
448 bytes_left = hwgrpp->dih_size;
449
450 rgrpnum = mac_hwgrp_num(mh, MAC_RING_TYPE_RX);
451 /* display the default group information first */
452 if (rgrpnum > 0) {
453 if (sizeof (dld_hwgrpinfo_t) > bytes_left) {
454 err = ENOSPC;
455 goto done;
456 }
457
458 bzero(&hwgrp, sizeof (hwgrp));
459 bcopy(mac_name(mh), hwgrp.dhi_link_name,
460 sizeof (hwgrp.dhi_link_name));
461 mac_get_hwrxgrp_info(mh, 0, &hwgrp.dhi_grp_num,
462 &hwgrp.dhi_n_rings, hwgrp.dhi_rings, &hwgrp.dhi_grp_type,
463 &hwgrp.dhi_n_clnts, hwgrp.dhi_clnts);
464 if (hwgrp.dhi_n_rings != 0) {
465 if (copyout(&hwgrp, hip, sizeof (hwgrp)) != 0) {
466 err = EFAULT;
467 goto done;
468 }
469 }
470 hip++;
471 totgrps++;
472 bytes_left -= sizeof (dld_hwgrpinfo_t);
473 }
474
475 tgrpnum = mac_hwgrp_num(mh, MAC_RING_TYPE_TX);
476 /* display the default group information first */
477 if (tgrpnum > 0) {
478 if (sizeof (dld_hwgrpinfo_t) > bytes_left) {
479 err = ENOSPC;
480 goto done;
481 }
482
483 bzero(&hwgrp, sizeof (hwgrp));
484 bcopy(mac_name(mh), hwgrp.dhi_link_name,
485 sizeof (hwgrp.dhi_link_name));
486 mac_get_hwtxgrp_info(mh, tgrpnum - 1, &hwgrp.dhi_grp_num,
487 &hwgrp.dhi_n_rings, hwgrp.dhi_rings, &hwgrp.dhi_grp_type,
488 &hwgrp.dhi_n_clnts, hwgrp.dhi_clnts);
489 if (hwgrp.dhi_n_rings != 0) {
490 if (copyout(&hwgrp, hip, sizeof (hwgrp)) != 0) {
491 err = EFAULT;
492 goto done;
493 }
494 }
495 hip++;
496 totgrps++;
497 bytes_left -= sizeof (dld_hwgrpinfo_t);
498 }
499
500 /* Rest of the rx groups */
501 for (i = 1; i < rgrpnum; i++) {
502 if (sizeof (dld_hwgrpinfo_t) > bytes_left) {
503 err = ENOSPC;
504 goto done;
505 }
506
507 bzero(&hwgrp, sizeof (hwgrp));
508 bcopy(mac_name(mh), hwgrp.dhi_link_name,
509 sizeof (hwgrp.dhi_link_name));
510 mac_get_hwrxgrp_info(mh, i, &hwgrp.dhi_grp_num,
511 &hwgrp.dhi_n_rings, hwgrp.dhi_rings, &hwgrp.dhi_grp_type,
512 &hwgrp.dhi_n_clnts, hwgrp.dhi_clnts);
513 if (hwgrp.dhi_n_rings == 0)
514 continue;
515 if (copyout(&hwgrp, hip, sizeof (hwgrp)) != 0) {
516 err = EFAULT;
517 goto done;
518 }
519
520 hip++;
521 totgrps++;
522 bytes_left -= sizeof (dld_hwgrpinfo_t);
523 }
524
525 /* Rest of the tx group */
526 tgrpnum = mac_hwgrp_num(mh, MAC_RING_TYPE_TX);
527 for (i = 0; i < tgrpnum - 1; i++) {
528 if (sizeof (dld_hwgrpinfo_t) > bytes_left) {
529 err = ENOSPC;
530 goto done;
531 }
532
533 bzero(&hwgrp, sizeof (hwgrp));
534 bcopy(mac_name(mh), hwgrp.dhi_link_name,
535 sizeof (hwgrp.dhi_link_name));
536 mac_get_hwtxgrp_info(mh, i, &hwgrp.dhi_grp_num,
537 &hwgrp.dhi_n_rings, hwgrp.dhi_rings, &hwgrp.dhi_grp_type,
538 &hwgrp.dhi_n_clnts, hwgrp.dhi_clnts);
539 if (hwgrp.dhi_n_rings == 0)
540 continue;
541 if (copyout(&hwgrp, hip, sizeof (hwgrp)) != 0) {
542 err = EFAULT;
543 goto done;
544 }
545
546 hip++;
547 totgrps++;
548 bytes_left -= sizeof (dld_hwgrpinfo_t);
549 }
550
551 done:
552 if (mh != NULL)
553 dld_mac_close(mh);
554 if (err == 0)
555 hwgrpp->dih_n_groups = totgrps;
556 return (err);
557 }
558
559 /* ARGSUSED */
560 static int
561 drv_ioc_macaddrget(void *karg, intptr_t arg, int mode, cred_t *cred, int *rvalp)
562 {
563 dld_ioc_macaddrget_t *magp = karg;
564 dld_macaddrinfo_t mai, *maip;
565 mac_handle_t mh = NULL;
566 int i, err;
567 uint_t bytes_left;
568 boolean_t is_used;
569 zoneid_t zoneid = crgetzoneid(cred);
570
571 if (zoneid != GLOBAL_ZONEID &&
572 zone_check_datalink(&zoneid, magp->dig_linkid) != 0)
573 return (ENOENT);
574
575 magp->dig_count = 0;
576 err = mac_open_by_linkid(magp->dig_linkid, &mh);
577 if (err != 0)
578 goto done;
579
580 maip = (dld_macaddrinfo_t *)
581 ((uchar_t *)arg + sizeof (dld_ioc_macaddrget_t));
582 bytes_left = magp->dig_size;
583
584 for (i = 0; i < mac_addr_factory_num(mh) + 1; i++) {
585 if (sizeof (dld_macaddrinfo_t) > bytes_left) {
586 err = ENOSPC;
587 goto done;
588 }
589
590 bzero(&mai, sizeof (mai));
591
592 if (i == 0) {
593 /* primary MAC address */
594 mac_unicast_primary_get(mh, mai.dmi_addr);
595 mai.dmi_addrlen = mac_addr_len(mh);
596 mac_unicast_primary_info(mh, mai.dmi_client_name,
597 &is_used);
598 } else {
599 /* factory MAC address slot */
600 mac_addr_factory_value(mh, i, mai.dmi_addr,
601 &mai.dmi_addrlen, mai.dmi_client_name, &is_used);
602 }
603
604 mai.dmi_slot = i;
605 if (is_used)
606 mai.dmi_flags |= DLDIOCMACADDR_USED;
607
608 if (copyout(&mai, maip, sizeof (mai)) != 0) {
609 err = EFAULT;
610 goto done;
611 }
612
613 maip++;
614 bytes_left -= sizeof (dld_macaddrinfo_t);
615 }
616
617 done:
618 if (mh != NULL)
619 dld_mac_close(mh);
620 if (err == 0)
621 magp->dig_count = mac_addr_factory_num(mh) + 1;
622 return (err);
623 }
624
625 /*
626 * DLDIOC_SET/GETMACPROP
627 */
628 static int
629 drv_ioc_prop_common(dld_ioc_macprop_t *prop, intptr_t arg, boolean_t set,
630 cred_t *cred, int mode)
631 {
632 int err = EINVAL;
633 dls_dl_handle_t dlh = NULL;
634 dls_link_t *dlp = NULL;
635 mac_perim_handle_t mph = NULL;
636 dld_ioc_macprop_t *kprop;
637 datalink_id_t linkid;
638 datalink_class_t class;
639 zoneid_t zoneid = crgetzoneid(cred);
640 uint_t dsize;
641
642 /*
643 * We only use pr_valsize from prop, as the caller only did a
644 * copyin() for sizeof (dld_ioc_prop_t), which doesn't cover
645 * the property data. We copyin the full dld_ioc_prop_t
646 * including the data into kprop down below.
647 */
648 dsize = sizeof (dld_ioc_macprop_t) + prop->pr_valsize - 1;
649 if (dsize < prop->pr_valsize)
650 return (EINVAL);
651
652 /*
653 * The property data is variable size, so we need to allocate
654 * a buffer for kernel use as this data was not part of the
655 * prop allocation and copyin() done by the framework.
656 */
657 if ((kprop = kmem_alloc(dsize, KM_NOSLEEP)) == NULL)
658 return (ENOMEM);
659
660 if (ddi_copyin((void *)arg, kprop, dsize, mode) != 0) {
661 err = EFAULT;
662 goto done;
663 }
664
665 linkid = kprop->pr_linkid;
666
667 if (set) {
668 if ((err = dls_mgmt_get_linkinfo(linkid, NULL, &class, NULL,
669 NULL)) != 0 || (err = drv_ioc_checkprivs(class, cred)) != 0)
670 goto done;
671 }
672
673 if ((err = dls_devnet_hold_tmp(linkid, &dlh)) != 0)
674 goto done;
675 if ((err = mac_perim_enter_by_macname(dls_devnet_mac(dlh), &mph)) != 0)
676 goto done;
677 if ((err = dls_link_hold(dls_devnet_mac(dlh), &dlp)) != 0)
678 goto done;
679
680 /*
681 * Don't allow a process to get or set properties of a link if that
682 * link doesn't belong to that zone.
683 */
684 if (zoneid != dls_devnet_getownerzid(dlh)) {
685 err = ENOENT;
686 goto done;
687 }
688
689 if (!mac_prop_check_size(kprop->pr_num, kprop->pr_valsize,
690 kprop->pr_flags & DLD_PROP_POSSIBLE)) {
691 err = ENOBUFS;
692 goto done;
693 }
694
695 switch (kprop->pr_num) {
696 case MAC_PROP_ZONE:
697 if (set) {
698 dld_ioc_zid_t *dzp = (dld_ioc_zid_t *)kprop->pr_val;
699
700 if (zoneid != GLOBAL_ZONEID) {
701 err = EACCES;
702 goto done;
703 }
704 err = dls_devnet_setzid(dlh, dzp->diz_zid);
705 } else {
706 kprop->pr_perm_flags = MAC_PROP_PERM_RW;
707 (*(zoneid_t *)kprop->pr_val) = dls_devnet_getzid(dlh);
708 }
709 break;
710 case MAC_PROP_AUTOPUSH: {
711 struct dlautopush *dlap = (struct dlautopush *)kprop->pr_val;
712
713 if (set) {
714 if (kprop->pr_valsize != 0)
715 err = drv_ioc_setap(linkid, dlap);
716 else
717 err = drv_ioc_clrap(linkid);
718 } else {
719 if (kprop->pr_valsize == 0)
720 return (ENOBUFS);
721
722 kprop->pr_perm_flags = MAC_PROP_PERM_RW;
723 err = drv_ioc_getap(linkid, dlap);
724 }
725 break;
726 }
727 case MAC_PROP_TAGMODE:
728 if (set) {
729 link_tagmode_t mode = *(link_tagmode_t *)kprop->pr_val;
730
731 if (mode != LINK_TAGMODE_VLANONLY &&
732 mode != LINK_TAGMODE_NORMAL) {
733 err = EINVAL;
734 } else {
735 dlp->dl_tagmode = mode;
736 err = 0;
737 }
738 } else {
739 *(link_tagmode_t *)kprop->pr_val = dlp->dl_tagmode;
740 kprop->pr_perm_flags = MAC_PROP_PERM_RW;
741 err = 0;
742 }
743 break;
744 default: {
745 mac_propval_range_t *rangep = NULL;
746 void *default_val = NULL;
747 uint_t default_size = 0;
748
749 /* set a property value */
750 if (set) {
751 err = mac_set_prop(dlp->dl_mh, kprop->pr_num,
752 kprop->pr_name, kprop->pr_val, kprop->pr_valsize);
753 break;
754 }
755
756 /*
757 * Get the property value, default, or possible value
758 * depending on flags passed from the user.
759 */
760
761 /* a property has RW permissions by default */
762 kprop->pr_perm_flags = MAC_PROP_PERM_RW;
763
764 if (kprop->pr_flags & DLD_PROP_POSSIBLE) {
765 rangep = (mac_propval_range_t *)kprop->pr_val;
766
767 /*
768 * fail if rangep is not aligned to first
769 * member of mac_propval_range_t.
770 */
771 ASSERT(IS_P2ALIGNED(rangep, sizeof (uint_t)));
772 } else if (kprop->pr_flags & DLD_PROP_DEFAULT) {
773 default_val = kprop->pr_val;
774 default_size = kprop->pr_valsize;
775 }
776
777 /*
778 * Always return the permissions, and optionally return
779 * the default value or possible values range.
780 */
781 err = mac_prop_info(dlp->dl_mh, kprop->pr_num, kprop->pr_name,
782 default_val, default_size, rangep, &kprop->pr_perm_flags);
783 if (err != 0)
784 goto done;
785
786 if (default_val == NULL && rangep == NULL) {
787 err = mac_get_prop(dlp->dl_mh, kprop->pr_num,
788 kprop->pr_name, kprop->pr_val, kprop->pr_valsize);
789 }
790 }
791 }
792
793 done:
794 if (!set && ddi_copyout(kprop, (void *)arg, dsize, mode) != 0)
795 err = EFAULT;
796
797 if (dlp != NULL)
798 dls_link_rele(dlp);
799
800 if (mph != NULL) {
801 int32_t cpuid;
802 void *mdip = NULL;
803
804 if (dlp != NULL && set && err == 0) {
805 cpuid = mac_client_intr_cpu(dlp->dl_mch);
806 mdip = mac_get_devinfo(dlp->dl_mh);
807 }
808
809 mac_perim_exit(mph);
810
811 if (mdip != NULL && cpuid != -1)
812 mac_client_set_intr_cpu(mdip, dlp->dl_mch, cpuid);
813 }
814
815 if (dlh != NULL)
816 dls_devnet_rele_tmp(dlh);
817
818 if (kprop != NULL)
819 kmem_free(kprop, dsize);
820 return (err);
821 }
822
823 /* ARGSUSED */
824 static int
825 drv_ioc_setprop(void *karg, intptr_t arg, int mode, cred_t *cred, int *rvalp)
826 {
827 return (drv_ioc_prop_common(karg, arg, B_TRUE, cred, mode));
828 }
829
830 /* ARGSUSED */
831 static int
832 drv_ioc_getprop(void *karg, intptr_t arg, int mode, cred_t *cred, int *rvalp)
833 {
834 return (drv_ioc_prop_common(karg, arg, B_FALSE, cred, mode));
835 }
836
837 /*
838 * DLDIOC_RENAME.
839 *
840 * This function handles two cases of link renaming. See more in comments above
841 * dls_datalink_rename().
842 */
843 /* ARGSUSED */
844 static int
845 drv_ioc_rename(void *karg, intptr_t arg, int mode, cred_t *cred, int *rvalp)
846 {
847 dld_ioc_rename_t *dir = karg;
848 mod_hash_key_t key;
849 mod_hash_val_t val;
850 zoneid_t zoneid = crgetzoneid(cred);
851 datalink_class_t class;
852 int err;
853
854 if (zoneid != GLOBAL_ZONEID &&
855 (zone_check_datalink(&zoneid, dir->dir_linkid1) != 0 ||
856 dir->dir_linkid2 != DATALINK_INVALID_LINKID &&
857 zone_check_datalink(&zoneid, dir->dir_linkid2) != 0))
858 return (ENOENT);
859
860 if ((err = dls_mgmt_get_linkinfo(dir->dir_linkid1, NULL, &class, NULL,
861 NULL)) != 0)
862 return (err);
863
864 if ((err = drv_ioc_checkprivs(class, cred)) != 0)
865 return (err);
866
867 if ((err = dls_devnet_rename(dir->dir_linkid1, dir->dir_linkid2,
868 dir->dir_link)) != 0)
869 return (err);
870
871 if (dir->dir_linkid2 == DATALINK_INVALID_LINKID)
872 return (0);
873
874 /*
875 * if dir_linkid2 is not DATALINK_INVALID_LINKID, it means this
876 * renaming request is to rename a valid physical link (dir_linkid1)
877 * to a "removed" physical link (dir_linkid2, which is removed by DR
878 * or during system shutdown). In this case, the link (specified by
879 * dir_linkid1) would inherit all the configuration of dir_linkid2,
880 * and dir_linkid1 and its configuration would be lost.
881 *
882 * Remove per-link autopush configuration of dir_linkid1 in this case.
883 */
884 key = (mod_hash_key_t)(uintptr_t)dir->dir_linkid1;
885 rw_enter(&dld_ap_hash_lock, RW_WRITER);
886 if (mod_hash_find(dld_ap_hashp, key, &val) != 0) {
887 rw_exit(&dld_ap_hash_lock);
888 return (0);
889 }
890
891 VERIFY(mod_hash_remove(dld_ap_hashp, key, &val) == 0);
892 kmem_free(val, sizeof (dld_ap_t));
893 rw_exit(&dld_ap_hash_lock);
894 return (0);
895 }
896
897 static int
898 drv_ioc_setap(datalink_id_t linkid, struct dlautopush *dlap)
899 {
900 dld_ap_t *dap;
901 int i;
902 mod_hash_key_t key;
903
904 if (dlap->dap_npush == 0 || dlap->dap_npush > MAXAPUSH)
905 return (EINVAL);
906
907 /*
908 * Validate that the specified list of modules exist.
909 */
910 for (i = 0; i < dlap->dap_npush; i++) {
911 if (fmodsw_find(dlap->dap_aplist[i], FMODSW_LOAD) == NULL)
912 return (EINVAL);
913 }
914
915
916 key = (mod_hash_key_t)(uintptr_t)linkid;
917
918 rw_enter(&dld_ap_hash_lock, RW_WRITER);
919 if (mod_hash_find(dld_ap_hashp, key, (mod_hash_val_t *)&dap) != 0) {
920 dap = kmem_zalloc(sizeof (dld_ap_t), KM_NOSLEEP);
921 if (dap == NULL) {
922 rw_exit(&dld_ap_hash_lock);
923 return (ENOMEM);
924 }
925
926 dap->da_linkid = linkid;
927 VERIFY(mod_hash_insert(dld_ap_hashp, key,
928 (mod_hash_val_t)dap) == 0);
929 }
930
931 /*
932 * Update the configuration.
933 */
934 dap->da_anchor = dlap->dap_anchor;
935 dap->da_npush = dlap->dap_npush;
936 for (i = 0; i < dlap->dap_npush; i++) {
937 (void) strlcpy(dap->da_aplist[i], dlap->dap_aplist[i],
938 FMNAMESZ + 1);
939 }
940 rw_exit(&dld_ap_hash_lock);
941
942 return (0);
943 }
944
945 static int
946 drv_ioc_getap(datalink_id_t linkid, struct dlautopush *dlap)
947 {
948 dld_ap_t *dap;
949 int i;
950
951 rw_enter(&dld_ap_hash_lock, RW_READER);
952 if (mod_hash_find(dld_ap_hashp,
953 (mod_hash_key_t)(uintptr_t)linkid,
954 (mod_hash_val_t *)&dap) != 0) {
955 rw_exit(&dld_ap_hash_lock);
956 dlap->dap_npush = 0;
957 return (0);
958 }
959
960 /*
961 * Retrieve the configuration.
962 */
963 dlap->dap_anchor = dap->da_anchor;
964 dlap->dap_npush = dap->da_npush;
965 for (i = 0; i < dap->da_npush; i++) {
966 (void) strlcpy(dlap->dap_aplist[i], dap->da_aplist[i],
967 FMNAMESZ + 1);
968 }
969 rw_exit(&dld_ap_hash_lock);
970
971 return (0);
972 }
973
974 static int
975 drv_ioc_clrap(datalink_id_t linkid)
976 {
977 mod_hash_val_t val;
978 mod_hash_key_t key;
979
980 key = (mod_hash_key_t)(uintptr_t)linkid;
981
982 rw_enter(&dld_ap_hash_lock, RW_WRITER);
983 if (mod_hash_find(dld_ap_hashp, key, &val) != 0) {
984 rw_exit(&dld_ap_hash_lock);
985 return (0);
986 }
987
988 VERIFY(mod_hash_remove(dld_ap_hashp, key, &val) == 0);
989 kmem_free(val, sizeof (dld_ap_t));
990 rw_exit(&dld_ap_hash_lock);
991 return (0);
992 }
993
994 /*
995 * DLDIOC_DOORSERVER
996 */
997 /* ARGSUSED */
998 static int
999 drv_ioc_doorserver(void *karg, intptr_t arg, int mode, cred_t *cred, int *rvalp)
1000 {
1001 dld_ioc_door_t *did = karg;
1002
1003 return (dls_mgmt_door_set(did->did_start_door));
1004 }
1005
1006 /*
1007 * DLDIOC_USAGELOG
1008 */
1009 /* ARGSUSED */
1010 static int
1011 drv_ioc_usagelog(void *karg, intptr_t arg, int mode, cred_t *cred,
1012 int *rvalp)
1013 {
1014 dld_ioc_usagelog_t *log_info = (dld_ioc_usagelog_t *)karg;
1015 int err = 0;
1016
1017 if (log_info->ul_type < MAC_LOGTYPE_LINK ||
1018 log_info->ul_type > MAC_LOGTYPE_FLOW)
1019 return (EINVAL);
1020
1021 if (log_info->ul_onoff) {
1022 err = mac_start_logusage(log_info->ul_type,
1023 log_info->ul_interval);
1024 } else {
1025 mac_stop_logusage(log_info->ul_type);
1026 }
1027 return (err);
1028 }
1029
1030 /*
1031 * Process a DLDIOC_ADDFLOW request.
1032 */
1033 /* ARGSUSED */
1034 static int
1035 drv_ioc_addflow(void *karg, intptr_t arg, int mode, cred_t *cred, int *rvalp)
1036 {
1037 dld_ioc_addflow_t *afp = karg;
1038
1039 return (dld_add_flow(afp->af_linkid, afp->af_name,
1040 &afp->af_flow_desc, &afp->af_resource_props));
1041 }
1042
1043 /*
1044 * Process a DLDIOC_REMOVEFLOW request.
1045 */
1046 /* ARGSUSED */
1047 static int
1048 drv_ioc_removeflow(void *karg, intptr_t arg, int mode, cred_t *cred, int *rvalp)
1049 {
1050 dld_ioc_removeflow_t *rfp = karg;
1051
1052 return (dld_remove_flow(rfp->rf_name));
1053 }
1054
1055 /*
1056 * Process a DLDIOC_MODIFYFLOW request.
1057 */
1058 /* ARGSUSED */
1059 static int
1060 drv_ioc_modifyflow(void *karg, intptr_t arg, int mode, cred_t *cred, int *rvalp)
1061 {
1062 dld_ioc_modifyflow_t *mfp = karg;
1063
1064 return (dld_modify_flow(mfp->mf_name, &mfp->mf_resource_props));
1065 }
1066
1067 /*
1068 * Process a DLDIOC_WALKFLOW request.
1069 */
1070 /* ARGSUSED */
1071 static int
1072 drv_ioc_walkflow(void *karg, intptr_t arg, int mode, cred_t *cred, int *rvalp)
1073 {
1074 dld_ioc_walkflow_t *wfp = karg;
1075
1076 return (dld_walk_flow(wfp, arg, cred));
1077 }
1078
1079 /*
1080 * Check for GLDv3 autopush information. There are three cases:
1081 *
1082 * 1. If devp points to a GLDv3 datalink and it has autopush configuration,
1083 * fill dlap in with that information and return 0.
1084 *
1085 * 2. If devp points to a GLDv3 datalink but it doesn't have autopush
1086 * configuration, then replace devp with the physical device (if one
1087 * exists) and return 1. This allows stropen() to find the old-school
1088 * per-driver autopush configuration. (For softmac, the result is that
1089 * the softmac dev_t is replaced with the legacy device's dev_t).
1090 *
1091 * 3. If neither of the above apply, don't touch the args and return -1.
1092 */
1093 int
1094 dld_autopush(dev_t *devp, struct dlautopush *dlap)
1095 {
1096 dld_ap_t *dap;
1097 datalink_id_t linkid;
1098 dev_t phydev;
1099
1100 if (!GLDV3_DRV(getmajor(*devp)))
1101 return (-1);
1102
1103 /*
1104 * Find the linkid by the link's dev_t.
1105 */
1106 if (dls_devnet_dev2linkid(*devp, &linkid) != 0)
1107 return (-1);
1108
1109 /*
1110 * Find the autopush configuration associated with the linkid.
1111 */
1112 rw_enter(&dld_ap_hash_lock, RW_READER);
1113 if (mod_hash_find(dld_ap_hashp, (mod_hash_key_t)(uintptr_t)linkid,
1114 (mod_hash_val_t *)&dap) == 0) {
1115 *dlap = dap->da_ap;
1116 rw_exit(&dld_ap_hash_lock);
1117 return (0);
1118 }
1119 rw_exit(&dld_ap_hash_lock);
1120
1121 if (dls_devnet_phydev(linkid, &phydev) != 0)
1122 return (-1);
1123
1124 *devp = phydev;
1125 return (1);
1126 }
1127
1128 /*
1129 * Secure objects implementation
1130 */
1131
1132 /* ARGSUSED */
1133 static int
1134 drv_secobj_ctor(void *buf, void *arg, int kmflag)
1135 {
1136 bzero(buf, sizeof (dld_secobj_t));
1137 return (0);
1138 }
1139
1140 static void
1141 drv_secobj_init(void)
1142 {
1143 rw_init(&drv_secobj_lock, NULL, RW_DEFAULT, NULL);
1144 drv_secobj_cachep = kmem_cache_create("drv_secobj_cache",
1145 sizeof (dld_secobj_t), 0, drv_secobj_ctor, NULL,
1146 NULL, NULL, NULL, 0);
1147 drv_secobj_hash = mod_hash_create_extended("drv_secobj_hash",
1148 SECOBJ_WEP_HASHSZ, mod_hash_null_keydtor, mod_hash_null_valdtor,
1149 mod_hash_bystr, NULL, mod_hash_strkey_cmp, KM_SLEEP);
1150 }
1151
1152 static void
1153 drv_secobj_fini(void)
1154 {
1155 mod_hash_destroy_hash(drv_secobj_hash);
1156 kmem_cache_destroy(drv_secobj_cachep);
1157 rw_destroy(&drv_secobj_lock);
1158 }
1159
1160 /* ARGSUSED */
1161 static int
1162 drv_ioc_secobj_set(void *karg, intptr_t arg, int mode, cred_t *cred, int *rvalp)
1163 {
1164 dld_ioc_secobj_set_t *ssp = karg;
1165 dld_secobj_t *sobjp, *objp;
1166 int err;
1167
1168 sobjp = &ssp->ss_obj;
1169
1170 if (sobjp->so_class != DLD_SECOBJ_CLASS_WEP &&
1171 sobjp->so_class != DLD_SECOBJ_CLASS_WPA)
1172 return (EINVAL);
1173
1174 if (sobjp->so_name[DLD_SECOBJ_NAME_MAX - 1] != '\0' ||
1175 sobjp->so_len > DLD_SECOBJ_VAL_MAX)
1176 return (EINVAL);
1177
1178 rw_enter(&drv_secobj_lock, RW_WRITER);
1179 err = mod_hash_find(drv_secobj_hash, (mod_hash_key_t)sobjp->so_name,
1180 (mod_hash_val_t *)&objp);
1181 if (err == 0) {
1182 if ((ssp->ss_flags & DLD_SECOBJ_OPT_CREATE) != 0) {
1183 rw_exit(&drv_secobj_lock);
1184 return (EEXIST);
1185 }
1186 } else {
1187 ASSERT(err == MH_ERR_NOTFOUND);
1188 if ((ssp->ss_flags & DLD_SECOBJ_OPT_CREATE) == 0) {
1189 rw_exit(&drv_secobj_lock);
1190 return (ENOENT);
1191 }
1192 objp = kmem_cache_alloc(drv_secobj_cachep, KM_SLEEP);
1193 (void) strlcpy(objp->so_name, sobjp->so_name,
1194 DLD_SECOBJ_NAME_MAX);
1195
1196 VERIFY(mod_hash_insert(drv_secobj_hash,
1197 (mod_hash_key_t)objp->so_name, (mod_hash_val_t)objp) == 0);
1198 }
1199 bcopy(sobjp->so_val, objp->so_val, sobjp->so_len);
1200 objp->so_len = sobjp->so_len;
1201 objp->so_class = sobjp->so_class;
1202 rw_exit(&drv_secobj_lock);
1203 return (0);
1204 }
1205
1206 typedef struct dld_secobj_state {
1207 uint_t ss_free;
1208 uint_t ss_count;
1209 int ss_rc;
1210 int ss_mode;
1211 dld_secobj_t *ss_objp;
1212 } dld_secobj_state_t;
1213
1214 /* ARGSUSED */
1215 static uint_t
1216 drv_secobj_walker(mod_hash_key_t key, mod_hash_val_t *val, void *arg)
1217 {
1218 dld_secobj_state_t *statep = arg;
1219 dld_secobj_t *sobjp = (dld_secobj_t *)val;
1220
1221 if (statep->ss_free < sizeof (dld_secobj_t)) {
1222 statep->ss_rc = ENOSPC;
1223 return (MH_WALK_TERMINATE);
1224 }
1225 if (ddi_copyout(sobjp, statep->ss_objp, sizeof (*sobjp),
1226 statep->ss_mode) != 0) {
1227 statep->ss_rc = EFAULT;
1228 return (MH_WALK_TERMINATE);
1229 }
1230 statep->ss_objp++;
1231 statep->ss_free -= sizeof (dld_secobj_t);
1232 statep->ss_count++;
1233 return (MH_WALK_CONTINUE);
1234 }
1235
1236 /* ARGSUSED */
1237 static int
1238 drv_ioc_secobj_get(void *karg, intptr_t arg, int mode, cred_t *cred, int *rvalp)
1239 {
1240 dld_ioc_secobj_get_t *sgp = karg;
1241 dld_secobj_t *sobjp, *objp;
1242 int err;
1243
1244 sobjp = &sgp->sg_obj;
1245 if (sobjp->so_name[DLD_SECOBJ_NAME_MAX - 1] != '\0')
1246 return (EINVAL);
1247
1248 rw_enter(&drv_secobj_lock, RW_READER);
1249 if (sobjp->so_name[0] != '\0') {
1250 err = mod_hash_find(drv_secobj_hash,
1251 (mod_hash_key_t)sobjp->so_name, (mod_hash_val_t *)&objp);
1252 if (err != 0) {
1253 ASSERT(err == MH_ERR_NOTFOUND);
1254 rw_exit(&drv_secobj_lock);
1255 return (ENOENT);
1256 }
1257 bcopy(objp->so_val, sobjp->so_val, objp->so_len);
1258 sobjp->so_len = objp->so_len;
1259 sobjp->so_class = objp->so_class;
1260 sgp->sg_count = 1;
1261 } else {
1262 dld_secobj_state_t state;
1263
1264 state.ss_free = sgp->sg_size - sizeof (dld_ioc_secobj_get_t);
1265 state.ss_count = 0;
1266 state.ss_rc = 0;
1267 state.ss_mode = mode;
1268 state.ss_objp = (dld_secobj_t *)((uchar_t *)arg +
1269 sizeof (dld_ioc_secobj_get_t));
1270
1271 mod_hash_walk(drv_secobj_hash, drv_secobj_walker, &state);
1272 if (state.ss_rc != 0) {
1273 rw_exit(&drv_secobj_lock);
1274 return (state.ss_rc);
1275 }
1276 sgp->sg_count = state.ss_count;
1277 }
1278 rw_exit(&drv_secobj_lock);
1279 return (0);
1280 }
1281
1282 /* ARGSUSED */
1283 static int
1284 drv_ioc_secobj_unset(void *karg, intptr_t arg, int mode, cred_t *cred,
1285 int *rvalp)
1286 {
1287 dld_ioc_secobj_unset_t *sup = karg;
1288 dld_secobj_t *objp;
1289 mod_hash_val_t val;
1290 int err;
1291
1292 if (sup->su_name[DLD_SECOBJ_NAME_MAX - 1] != '\0')
1293 return (EINVAL);
1294
1295 rw_enter(&drv_secobj_lock, RW_WRITER);
1296 err = mod_hash_find(drv_secobj_hash, (mod_hash_key_t)sup->su_name,
1297 (mod_hash_val_t *)&objp);
1298 if (err != 0) {
1299 ASSERT(err == MH_ERR_NOTFOUND);
1300 rw_exit(&drv_secobj_lock);
1301 return (ENOENT);
1302 }
1303 VERIFY(mod_hash_remove(drv_secobj_hash, (mod_hash_key_t)sup->su_name,
1304 (mod_hash_val_t *)&val) == 0);
1305 ASSERT(objp == (dld_secobj_t *)val);
1306
1307 kmem_cache_free(drv_secobj_cachep, objp);
1308 rw_exit(&drv_secobj_lock);
1309 return (0);
1310 }
1311
1312 /*
1313 * Note that ioctls that modify links have a NULL di_priv_func(), as
1314 * privileges can only be checked after we know the class of the link being
1315 * modified (due to class-specific fine-grained privileges such as
1316 * sys_iptun_config).
1317 */
1318 static dld_ioc_info_t drv_ioc_list[] = {
1319 {DLDIOC_ATTR, DLDCOPYINOUT, sizeof (dld_ioc_attr_t),
1320 drv_ioc_attr, NULL},
1321 {DLDIOC_PHYS_ATTR, DLDCOPYINOUT, sizeof (dld_ioc_phys_attr_t),
1322 drv_ioc_phys_attr, NULL},
1323 {DLDIOC_SECOBJ_SET, DLDCOPYIN, sizeof (dld_ioc_secobj_set_t),
1324 drv_ioc_secobj_set, secpolicy_dl_config},
1325 {DLDIOC_SECOBJ_GET, DLDCOPYINOUT, sizeof (dld_ioc_secobj_get_t),
1326 drv_ioc_secobj_get, secpolicy_dl_config},
1327 {DLDIOC_SECOBJ_UNSET, DLDCOPYIN, sizeof (dld_ioc_secobj_unset_t),
1328 drv_ioc_secobj_unset, secpolicy_dl_config},
1329 {DLDIOC_DOORSERVER, DLDCOPYIN, sizeof (dld_ioc_door_t),
1330 drv_ioc_doorserver, secpolicy_dl_config},
1331 {DLDIOC_RENAME, DLDCOPYIN, sizeof (dld_ioc_rename_t),
1332 drv_ioc_rename, NULL},
1333 {DLDIOC_MACADDRGET, DLDCOPYINOUT, sizeof (dld_ioc_macaddrget_t),
1334 drv_ioc_macaddrget, NULL},
1335 {DLDIOC_ADDFLOW, DLDCOPYIN, sizeof (dld_ioc_addflow_t),
1336 drv_ioc_addflow, secpolicy_dl_config},
1337 {DLDIOC_REMOVEFLOW, DLDCOPYIN, sizeof (dld_ioc_removeflow_t),
1338 drv_ioc_removeflow, secpolicy_dl_config},
1339 {DLDIOC_MODIFYFLOW, DLDCOPYIN, sizeof (dld_ioc_modifyflow_t),
1340 drv_ioc_modifyflow, secpolicy_dl_config},
1341 {DLDIOC_WALKFLOW, DLDCOPYINOUT, sizeof (dld_ioc_walkflow_t),
1342 drv_ioc_walkflow, NULL},
1343 {DLDIOC_USAGELOG, DLDCOPYIN, sizeof (dld_ioc_usagelog_t),
1344 drv_ioc_usagelog, secpolicy_dl_config},
1345 {DLDIOC_SETMACPROP, DLDCOPYIN, sizeof (dld_ioc_macprop_t),
1346 drv_ioc_setprop, NULL},
1347 {DLDIOC_GETMACPROP, DLDCOPYIN, sizeof (dld_ioc_macprop_t),
1348 drv_ioc_getprop, NULL},
1349 {DLDIOC_GETHWGRP, DLDCOPYINOUT, sizeof (dld_ioc_hwgrpget_t),
1350 drv_ioc_hwgrpget, NULL},
1351 };
1352
1353 typedef struct dld_ioc_modentry {
1354 uint16_t dim_modid; /* Top 16 bits of ioctl command */
1355 char *dim_modname; /* Module to be loaded */
1356 int ctrl_node_inst; /* Ctrl node instance */
1357 dld_ioc_info_t *dim_list; /* array of ioctl structures */
1358 uint_t dim_count; /* number of elements in dim_list */
1359 } dld_ioc_modentry_t;
1360
1361 /*
1362 * For all modules except for dld, dim_list and dim_count are assigned
1363 * when the modules register their ioctls in dld_ioc_register(). We
1364 * can statically initialize dld's ioctls in-line here; there's no
1365 * need for it to call dld_ioc_register() itself. ctrl_node_inst controls
1366 * whether an instance of the device will be held or the driver. If set to
1367 * a non-negative integer, device instance specified in ctrl_node_inst will
1368 * be held; so dld_ioc_register() _must_ be called in xxx_attach() routine of
1369 * the driver. If set to -1, driver will be held; so dld_ioc_register() _must_
1370 * be called in xxx_init() routine of the driver.
1371 */
1372 static dld_ioc_modentry_t dld_ioc_modtable[] = {
1373 {DLD_IOC, "dld", 0, drv_ioc_list, DLDIOCCNT(drv_ioc_list)},
1374 {AGGR_IOC, "aggr", 0, NULL, 0},
1375 {VNIC_IOC, "vnic", 0, NULL, 0},
1376 {SIMNET_IOC, "simnet", 0, NULL, 0},
1377 {BRIDGE_IOC, "bridge", 0, NULL, 0},
1378 {IPTUN_IOC, "iptun", 0, NULL, 0},
1379 {IBPART_IOC, "ibp", -1, NULL, 0}
1380 };
1381 #define DLDIOC_CNT \
1382 (sizeof (dld_ioc_modtable) / sizeof (dld_ioc_modentry_t))
1383
1384 static dld_ioc_modentry_t *
1385 dld_ioc_findmod(uint16_t modid)
1386 {
1387 int i;
1388
1389 for (i = 0; i < DLDIOC_CNT; i++) {
1390 if (modid == dld_ioc_modtable[i].dim_modid)
1391 return (&dld_ioc_modtable[i]);
1392 }
1393 return (NULL);
1394 }
1395
1396 int
1397 dld_ioc_register(uint16_t modid, dld_ioc_info_t *list, uint_t count)
1398 {
1399 dld_ioc_modentry_t *dim = dld_ioc_findmod(modid);
1400
1401 if (dim == NULL)
1402 return (ENOENT);
1403
1404 dim->dim_list = list;
1405 dim->dim_count = count;
1406 return (0);
1407 }
1408
1409 void
1410 dld_ioc_unregister(uint16_t modid)
1411 {
1412 VERIFY(dld_ioc_register(modid, NULL, 0) == 0);
1413 }
1414
1415 /*
1416 * The general design with GLDv3 ioctls is that all ioctls issued
1417 * through /dev/dld go through this drv_ioctl() function. This
1418 * function handles all ioctls on behalf of modules listed in
1419 * dld_ioc_modtable.
1420 *
1421 * When an ioctl is received, this function looks for the associated
1422 * module-id-specific ioctl information using dld_ioc_findmod(). The
1423 * call to ddi_hold_driver() or ddi_hold_devi_by_instance() on the
1424 * associated device will cause the kernel module responsible for the
1425 * ioctl to be loaded if it's not already loaded, which should result
1426 * in that module calling dld_ioc_register(), thereby filling in the
1427 * dim_list containing the details for the ioctl being processed.
1428 *
1429 * This function can then perform operations such as copyin() data and
1430 * do credential checks based on the registered ioctl information,
1431 * then issue the callback function di_func() registered by the
1432 * responsible module. Upon return, the appropriate copyout()
1433 * operation can be performed and the operation completes.
1434 */
1435 /* ARGSUSED */
1436 static int
1437 drv_ioctl(dev_t dev, int cmd, intptr_t arg, int mode, cred_t *cred, int *rvalp)
1438 {
1439 dld_ioc_modentry_t *dim;
1440 dld_ioc_info_t *info;
1441 dev_info_t *dip = NULL;
1442 struct dev_ops *dops = NULL;
1443 major_t major;
1444 void *buf = NULL;
1445 size_t sz;
1446 int i, err;
1447
1448 if ((dim = dld_ioc_findmod(DLD_IOC_MODID(cmd))) == NULL)
1449 return (ENOTSUP);
1450
1451 major = ddi_name_to_major(dim->dim_modname);
1452
1453 if (dim->ctrl_node_inst == -1) {
1454 /*
1455 * No dedicated instance to process ioctls.
1456 * dld_ioc_register() is called in xxx_init().
1457 */
1458 dops = ddi_hold_driver(major);
1459 } else {
1460 /*
1461 * Dedicated instance to handle ioctl.
1462 * dld_ioc_register() is called in xxx_attach().
1463 */
1464 dip = ddi_hold_devi_by_instance(major, dim->ctrl_node_inst, 0);
1465 }
1466
1467 if ((dip == NULL && dops == NULL) || dim->dim_list == NULL) {
1468 err = ENODEV;
1469 goto done;
1470 }
1471
1472 for (i = 0; i < dim->dim_count; i++) {
1473 if (cmd == dim->dim_list[i].di_cmd)
1474 break;
1475 }
1476 if (i == dim->dim_count) {
1477 err = ENOTSUP;
1478 goto done;
1479 }
1480
1481 info = &dim->dim_list[i];
1482
1483 if (info->di_priv_func != NULL &&
1484 (err = info->di_priv_func(cred)) != 0)
1485 goto done;
1486
1487 sz = info->di_argsize;
1488 if ((buf = kmem_zalloc(sz, KM_NOSLEEP)) == NULL) {
1489 err = ENOMEM;
1490 goto done;
1491 }
1492
1493 if ((info->di_flags & DLDCOPYIN) &&
1494 ddi_copyin((void *)arg, buf, sz, mode) != 0) {
1495 err = EFAULT;
1496 goto done;
1497 }
1498
1499 err = info->di_func(buf, arg, mode, cred, rvalp);
1500
1501 if ((info->di_flags & DLDCOPYOUT) &&
1502 ddi_copyout(buf, (void *)arg, sz, mode) != 0 && err == 0)
1503 err = EFAULT;
1504
1505 done:
1506 if (buf != NULL)
1507 kmem_free(buf, sz);
1508 if (dip != NULL)
1509 ddi_release_devi(dip);
1510 if (dops != NULL)
1511 ddi_rele_driver(major);
1512 return (err);
1513 }