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 2008 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #include <sys/param.h> 27 #include <sys/types.h> 28 #include <sys/user.h> 29 #include <sys/vfs.h> 30 #include <sys/vnode.h> 31 #include <sys/file.h> 32 #include <sys/stream.h> 33 #include <sys/stropts.h> 34 #include <sys/strsubr.h> 35 #include <sys/dlpi.h> 36 #include <sys/vnode.h> 37 #include <sys/socket.h> 38 #include <sys/sockio.h> 39 #include <net/if.h> 40 41 #include <sys/cred.h> 42 #include <sys/sysmacros.h> 43 44 #include <sys/sad.h> 45 #include <sys/kstr.h> 46 #include <sys/bootconf.h> 47 #include <sys/bootprops.h> 48 49 #include <sys/errno.h> 50 #include <sys/modctl.h> 51 #include <sys/sunddi.h> 52 #include <sys/sunldi.h> 53 #include <sys/esunddi.h> 54 #include <sys/promif.h> 55 56 #include <netinet/in.h> 57 #include <netinet/ip6.h> 58 #include <netinet/icmp6.h> 59 #include <netinet/sctp.h> 60 #include <inet/common.h> 61 #include <inet/ip.h> 62 #include <inet/ip6.h> 63 #include <inet/tcp.h> 64 #include <inet/sctp_ip.h> 65 #include <inet/udp_impl.h> 66 67 #include <sys/strlog.h> 68 #include <sys/log.h> 69 #include <sys/ethernet.h> 70 #include <sys/ddi_implfuncs.h> 71 72 #include <sys/dld.h> 73 #include <sys/mac_client.h> 74 75 /* 76 * Debug Macros 77 */ 78 int strplumbdebug = 0; 79 80 extern ib_boot_prop_t *iscsiboot_prop; 81 82 #define DBG0(_f) \ 83 if (strplumbdebug != 0) \ 84 printf("strplumb: " _f) 85 86 #define DBG1(_f, _a) \ 87 if (strplumbdebug != 0) \ 88 printf("strplumb: " _f, (_a)) 89 90 #define DBG2(_f, _a, _b) \ 91 if (strplumbdebug != 0) \ 92 printf("strplumb: " _f, (_a), (_b)) 93 94 #define DBG3(_f, _a, _b, _c) \ 95 if (strplumbdebug != 0) \ 96 printf("strplumb: " _f, (_a), (_b), (_c)) 97 98 /* 99 * Module linkage information for the kernel. 100 */ 101 #define STRPLUMB_IDENT "STREAMS Plumbing Module" 102 103 static struct modlmisc modlmisc = { 104 &mod_miscops, 105 STRPLUMB_IDENT 106 }; 107 108 static struct modlinkage modlinkage = { 109 MODREV_1, 110 &modlmisc, 111 NULL 112 }; 113 114 int 115 _init(void) 116 { 117 return (mod_install(&modlinkage)); 118 } 119 120 int 121 _fini(void) 122 { 123 return (mod_remove(&modlinkage)); 124 } 125 126 int 127 _info(struct modinfo *modinfop) 128 { 129 return (mod_info(&modlinkage, modinfop)); 130 } 131 132 #define ARP "arp" 133 #define TCP "tcp" 134 #define TCP6 "tcp6" 135 #define UDP "udp" 136 #define UDP6 "udp6" 137 #define SCTP "sctp" 138 #define SCTP6 "sctp6" 139 #define ICMP "icmp" 140 #define ICMP6 "icmp6" 141 #define IP "ip" 142 #define IP6 "ip6" 143 #define TIMOD "timod" 144 145 #define UDPDEV "/devices/pseudo/udp@0:udp" 146 #define TCP6DEV "/devices/pseudo/tcp6@0:tcp6" 147 #define UDP6DEV "/devices/pseudo/udp6@0:udp6" 148 #define SCTP6DEV "/devices/pseudo/sctp6@0:sctp6" 149 #define IP6DEV "/devices/pseudo/ip6@0:ip6" 150 151 typedef struct strplumb_modspec { 152 char *sm_type; 153 char *sm_name; 154 } strplumb_modspec_t; 155 156 static strplumb_modspec_t strplumb_modlist[] = { 157 { "drv", DLD_DRIVER_NAME }, 158 { "drv", IP }, 159 { "drv", IP6 }, 160 { "drv", TCP }, 161 { "drv", TCP6 }, 162 { "drv", UDP }, 163 { "drv", UDP6 }, 164 { "drv", SCTP }, 165 { "drv", SCTP6 }, 166 { "drv", ICMP }, 167 { "drv", ICMP6 }, 168 { "drv", ARP }, 169 { "strmod", TIMOD } 170 }; 171 172 /* 173 * Called from swapgeneric.c:loadrootmodules() in the network boot case. 174 */ 175 int 176 strplumb_load(void) 177 { 178 uint_t i; 179 strplumb_modspec_t *p; 180 181 DBG0("loading modules\n"); 182 183 for (i = 0, p = strplumb_modlist; 184 i < sizeof (strplumb_modlist) / sizeof (strplumb_modlist[0]); 185 i++, p++) { 186 if (modloadonly(p->sm_type, p->sm_name) < 0) { 187 printf("strplumb: failed to load %s/%s\n", 188 p->sm_type, p->sm_name); 189 return (EFAULT); 190 } 191 } 192 193 return (0); 194 } 195 196 static int 197 strplumb_init(void) 198 { 199 uint_t i; 200 strplumb_modspec_t *p; 201 int err; 202 203 DBG0("initializing modules\n"); 204 205 for (i = 0, p = strplumb_modlist; 206 i < sizeof (strplumb_modlist) / sizeof (strplumb_modlist[0]); 207 i++, p++) { 208 if (strcmp(p->sm_type, "drv") == 0) 209 err = (i_ddi_attach_pseudo_node(p->sm_name) != NULL) ? 210 0 : EFAULT; 211 else 212 err = (modload(p->sm_type, p->sm_name) < 0) ? 213 EFAULT : 0; 214 215 if (err != 0) { 216 printf("strplumb: failed to initialize %s/%s\n", 217 p->sm_type, p->sm_name); 218 return (err); 219 } 220 } 221 222 return (0); 223 } 224 225 static int 226 strplumb_autopush(void) 227 { 228 major_t maj; 229 minor_t min; 230 char *mods[5]; 231 uint_t anchor = 1; 232 int err; 233 234 min = (minor_t)-1; 235 mods[1] = NULL; 236 237 /* 238 * ARP 239 */ 240 DBG0("setting up arp autopush\n"); 241 242 mods[0] = ARP; 243 244 maj = ddi_name_to_major(ARP); 245 if ((err = kstr_autopush(SET_AUTOPUSH, &maj, &min, NULL, &anchor, 246 mods)) != 0) { 247 printf("strplumb: kstr_autopush(SET/ARP) failed: %d\n", err); 248 return (err); 249 } 250 251 return (0); 252 } 253 254 static int 255 strplumb_sctpq(ldi_ident_t li) 256 { 257 ldi_handle_t lh = NULL; 258 int err; 259 int rval; 260 261 DBG0("configuring SCTP default queue\n"); 262 263 if ((err = ldi_open_by_name(SCTP6DEV, FREAD|FWRITE, CRED(), &lh, 264 li)) != 0) { 265 printf("strplumb: open of SCTP6DEV failed: %d\n", err); 266 return (err); 267 } 268 269 if ((err = ldi_ioctl(lh, SCTP_IOC_DEFAULT_Q, (intptr_t)0, FKIOCTL, 270 CRED(), &rval)) != 0) { 271 printf("strplumb: failed to set SCTP default queue: %d\n", 272 err); 273 (void) ldi_close(lh, FREAD|FWRITE, CRED()); 274 return (err); 275 } 276 277 return (0); 278 } 279 280 static int 281 strplumb_tcpq(ldi_ident_t li) 282 { 283 ldi_handle_t lh = NULL; 284 ldi_handle_t ip_lh = NULL; 285 int err; 286 int rval; 287 288 DBG0("configuring TCP default queue\n"); 289 290 /* 291 * We open IP6DEV here because we need to have it open to in 292 * order to open TCP6DEV successfully. 293 */ 294 if ((err = ldi_open_by_name(IP6DEV, FREAD|FWRITE, CRED(), &ip_lh, 295 li)) != 0) { 296 printf("strplumb: open of IP6DEV failed: %d\n", err); 297 return (err); 298 } 299 300 /* 301 * We set the tcp default queue to IPv6 because IPv4 falls back to 302 * IPv6 when it can't find a client, but IPv6 does not fall back to 303 * IPv4. 304 */ 305 if ((err = ldi_open_by_name(TCP6DEV, FREAD|FWRITE, CRED(), &lh, 306 li)) != 0) { 307 printf("strplumb: open of TCP6DEV failed: %d\n", err); 308 goto done; 309 } 310 311 if ((err = ldi_ioctl(lh, TCP_IOC_DEFAULT_Q, (intptr_t)0, FKIOCTL, 312 CRED(), &rval)) != 0) { 313 printf("strplumb: failed to set TCP default queue: %d\n", 314 err); 315 goto done; 316 } 317 318 done: 319 (void) ldi_close(ip_lh, FREAD|FWRITE, CRED()); 320 return (err); 321 } 322 323 /* 324 * Can be set in /etc/system in the case of local booting. See comment below. 325 */ 326 char *ndev_name = 0; 327 int ndev_unit = 0; 328 329 /* 330 * If we booted diskless then strplumb() will have been called from 331 * swapgeneric.c:rootconf(). All we can do in that case is plumb the 332 * network device that we booted from. 333 * 334 * If we booted from a local disk, we will have been called from main(), 335 * and normally we defer the plumbing of interfaces until network/physical. 336 * This can be overridden by setting "ndev_name" in /etc/system. 337 */ 338 static int 339 resolve_boot_path(void) 340 { 341 char *devpath; 342 dev_info_t *dip; 343 const char *driver; 344 int instance; 345 #ifdef _OBP 346 char stripped_path[OBP_MAXPATHLEN]; 347 #endif 348 349 if (strncmp(rootfs.bo_fstype, "nfs", 3) == 0) 350 devpath = rootfs.bo_name; 351 else 352 devpath = strplumb_get_netdev_path(); 353 354 if (devpath != NULL) { 355 DBG1("resolving boot-path: %s\n", devpath); 356 #ifdef _OBP 357 /* 358 * OBP passes options e.g, "net:dhcp" 359 * remove them here 360 */ 361 prom_strip_options(devpath, stripped_path); 362 devpath = stripped_path; 363 #endif 364 /* 365 * Hold the devi since this is the root device. 366 */ 367 if ((dip = e_ddi_hold_devi_by_path(devpath, 0)) == NULL) { 368 printf("strplumb: unable to hold root device: %s\n", 369 devpath); 370 return (ENXIO); 371 } 372 373 driver = ddi_driver_name(dip); 374 instance = ddi_get_instance(dip); 375 } else { 376 if (ndev_name == NULL) 377 return (ENODEV); 378 379 DBG2("using ndev_name (%s) ndev_unit (%d)\n", ndev_name, 380 ndev_unit); 381 382 if (i_ddi_attach_hw_nodes(ndev_name) != DDI_SUCCESS) { 383 printf("strplumb: cannot load ndev_name '%s'\n", 384 ndev_name); 385 return (ENXIO); 386 } 387 388 driver = ndev_name; 389 instance = ndev_unit; 390 } 391 392 (void) snprintf(rootfs.bo_devname, BO_MAXOBJNAME, 393 "/devices/pseudo/clone@0:%s", driver); 394 (void) snprintf(rootfs.bo_ifname, BO_MAXOBJNAME, "%s%d", 395 driver, instance); 396 rootfs.bo_ppa = instance; 397 return (0); 398 } 399 400 static int 401 getifflags(ldi_handle_t lh, struct lifreq *lifrp) 402 { 403 struct strioctl iocb; 404 int rval; 405 406 iocb.ic_cmd = SIOCGLIFFLAGS; 407 iocb.ic_timout = 15; 408 iocb.ic_len = sizeof (struct lifreq); 409 iocb.ic_dp = (char *)lifrp; 410 411 return (ldi_ioctl(lh, I_STR, (intptr_t)&iocb, FKIOCTL, CRED(), &rval)); 412 413 } 414 415 static int 416 setifname(ldi_handle_t lh, struct lifreq *lifrp) 417 { 418 struct strioctl iocb; 419 int rval; 420 421 iocb.ic_cmd = SIOCSLIFNAME; 422 iocb.ic_timout = 15; 423 iocb.ic_len = sizeof (struct lifreq); 424 iocb.ic_dp = (char *)lifrp; 425 426 return (ldi_ioctl(lh, I_STR, (intptr_t)&iocb, FKIOCTL, CRED(), &rval)); 427 } 428 429 extern ib_boot_prop_t *iscsiboot_prop; 430 431 static int 432 strplumb_dev(ldi_ident_t li) 433 { 434 ldi_handle_t lh = NULL; 435 ldi_handle_t mux_lh = NULL; 436 int err; 437 struct lifreq lifr; 438 struct ifreq ifr; 439 int rval; 440 int af = 0; 441 char *name = NULL; 442 443 bzero(&lifr, sizeof (struct lifreq)); 444 bzero(&ifr, sizeof (ifr)); 445 446 if (iscsiboot_prop != NULL) { 447 af = iscsiboot_prop->boot_nic.sin_family; 448 } 449 450 /* 451 * Now set up the links. Ultimately, we should have two streams 452 * permanently linked underneath UDP (which is actually IP with UDP 453 * autopushed). One stream consists of the ARP-[ifname] combination, 454 * while the other consists of ARP-IP-[ifname]. The second combination 455 * seems a little weird, but is linked underneath UDP just to keep it 456 * around. 457 * 458 * We pin underneath UDP here to match what is done in ifconfig(1m); 459 * otherwise, ifconfig will be unable to unplumb the stream (the major 460 * number and mux id must both match for a successful I_PUNLINK). 461 * 462 * There are subtleties in the plumbing which make it essential to 463 * follow the logic used in ifconfig(1m) very closely. 464 */ 465 466 /* 467 * Plumb UDP-ARP-IP-<dev> 468 */ 469 470 if ((err = ldi_open_by_name(rootfs.bo_devname, FREAD|FWRITE, CRED(), 471 &lh, li)) != 0) { 472 printf("strplumb: open %s failed: %d\n", rootfs.bo_devname, 473 err); 474 goto done; 475 } 476 477 478 if ((err = ldi_ioctl(lh, I_PUSH, (intptr_t)IP, FKIOCTL, CRED(), 479 &rval)) != 0) { 480 printf("strplumb: push IP failed: %d\n", err); 481 goto done; 482 } 483 484 if ((err = getifflags(lh, &lifr)) != 0) 485 goto done; 486 487 if (af == 0 || af == AF_INET) { 488 lifr.lifr_flags |= IFF_IPV4; 489 lifr.lifr_flags &= ~IFF_IPV6; 490 name = UDPDEV; 491 } else { 492 /* 493 * iscsi boot is used with ipv6 enabled 494 */ 495 lifr.lifr_flags |= IFF_IPV6; 496 lifr.lifr_flags &= ~IFF_IPV4; 497 name = UDP6DEV; 498 } 499 if ((err = ldi_ioctl(lh, I_PUSH, (intptr_t)ARP, FKIOCTL, CRED(), 500 &rval)) != 0) { 501 printf("strplumb: push ARP failed: %d\n", err); 502 goto done; 503 } 504 505 (void) strlcpy(lifr.lifr_name, rootfs.bo_ifname, 506 sizeof (lifr.lifr_name)); 507 lifr.lifr_ppa = rootfs.bo_ppa; 508 509 if ((err = setifname(lh, &lifr)) != 0) 510 goto done; 511 512 /* Get the flags and check if ARP is needed */ 513 if ((err = getifflags(lh, &lifr)) != 0) { 514 printf("strplumb: getifflags %s IP failed, error %d\n", 515 lifr.lifr_name, err); 516 goto done; 517 } 518 519 /* Pop out ARP if not needed */ 520 if (lifr.lifr_flags & (IFF_NOARP | IFF_IPV6)) { 521 err = ldi_ioctl(lh, I_POP, (intptr_t)0, FKIOCTL, CRED(), 522 &rval); 523 if (err != 0) { 524 printf("strplumb: pop ARP failed, error %d\n", err); 525 goto done; 526 } 527 } 528 529 if ((err = ldi_open_by_name(name, FREAD|FWRITE, CRED(), &mux_lh, 530 li)) != 0) { 531 printf("strplumb: open of %s failed: %d\n", name, err); 532 goto done; 533 } 534 535 if ((err = ldi_ioctl(mux_lh, I_PLINK, (intptr_t)lh, 536 FREAD|FWRITE|FNOCTTY|FKIOCTL, CRED(), 537 &(ifr.ifr_ip_muxid))) != 0) { 538 printf("strplumb: plink UDP-ARP-IP-%s failed: %d\n", 539 rootfs.bo_ifname, err); 540 goto done; 541 } 542 543 if (af == AF_INET6) { 544 goto done; 545 } 546 547 DBG2("UDP-ARP-IP-%s muxid: %d\n", rootfs.bo_ifname, ifr.ifr_ip_muxid); 548 549 (void) ldi_close(lh, FREAD|FWRITE, CRED()); 550 lh = NULL; 551 552 /* 553 * Plumb UDP-ARP-<dev> 554 */ 555 556 if ((err = ldi_open_by_name(rootfs.bo_devname, FREAD|FWRITE, CRED(), 557 &lh, li)) != 0) { 558 printf("strplumb: open %s failed: %d\n", rootfs.bo_devname, 559 err); 560 goto done; 561 } 562 563 if ((err = ldi_ioctl(lh, I_PUSH, (intptr_t)ARP, FKIOCTL, CRED(), 564 &rval)) != 0) { 565 printf("strplumb: push ARP failed: %d\n", err); 566 goto done; 567 } 568 569 if ((err = setifname(lh, &lifr)) != 0) 570 goto done; 571 572 if ((err = ldi_ioctl(mux_lh, I_PLINK, (intptr_t)lh, 573 FREAD|FWRITE|FNOCTTY|FKIOCTL, CRED(), 574 &(ifr.ifr_arp_muxid))) != 0) { 575 printf("strplumb: plink UDP-ARP-%s failed: %d\n", 576 rootfs.bo_ifname, err); 577 goto done; 578 } 579 580 DBG2("UDP-ARP-%s muxid: %d\n", rootfs.bo_ifname, ifr.ifr_arp_muxid); 581 582 /* 583 * Cache the mux ids. 584 */ 585 (void) strlcpy(ifr.ifr_name, rootfs.bo_ifname, sizeof (ifr.ifr_name)); 586 587 if ((err = ldi_ioctl(mux_lh, SIOCSIFMUXID, (intptr_t)&ifr, FKIOCTL, 588 CRED(), &rval)) != 0) { 589 printf("strplumb: SIOCSIFMUXID failed: %d\n", err); 590 goto done; 591 } 592 593 done: 594 if (lh != NULL) 595 (void) ldi_close(lh, FREAD|FWRITE, CRED()); 596 597 if (mux_lh != NULL) 598 (void) ldi_close(mux_lh, FREAD|FWRITE, CRED()); 599 600 return (err); 601 } 602 603 /* 604 * Do streams plumbing for internet protocols. 605 */ 606 int 607 strplumb(void) 608 { 609 ldi_ident_t li; 610 int err; 611 612 if ((err = strplumb_init()) != 0) 613 return (err); 614 615 if ((err = strplumb_autopush()) != 0) 616 return (err); 617 618 if ((err = ldi_ident_from_mod(&modlinkage, &li)) != 0) 619 return (err); 620 621 /* 622 * Setup the TCP and SCTP default queues for the global stack. 623 * tcp/sctp_stack_init will do this for additional stack instances. 624 */ 625 if ((err = strplumb_sctpq(li)) != 0) 626 goto done; 627 628 if ((err = strplumb_tcpq(li)) != 0) 629 goto done; 630 631 if ((err = resolve_boot_path()) != 0) 632 goto done; 633 634 DBG1("rootfs.bo_devname: %s\n", rootfs.bo_devname); 635 DBG1("rootfs.bo_ifname: %s\n", rootfs.bo_ifname); 636 DBG1("rootfs.bo_ppa: %d\n", rootfs.bo_ppa); 637 638 if ((err = strplumb_dev(li)) != 0) 639 goto done; 640 641 done: 642 ldi_ident_release(li); 643 644 return (err); 645 } 646 647 /* multiboot: diskless boot interface discovery */ 648 649 #ifndef _OBP 650 651 static uchar_t boot_macaddr[16]; 652 static int boot_maclen; 653 static uchar_t *getmacaddr(dev_info_t *dip, size_t *maclenp); 654 static int matchmac(dev_info_t *dip, void *arg); 655 656 #endif /* !_OBP */ 657 658 char * 659 strplumb_get_netdev_path(void) 660 { 661 #ifdef _OBP 662 char fstype[OBP_MAXPROPNAME]; 663 664 if (bop_getprop("fstype", fstype) == -1) 665 return (NULL); 666 667 if (strncmp(fstype, "nfs", 3) == 0) 668 return (prom_bootpath()); 669 else 670 return (NULL); 671 #else 672 673 char *macstr, *devpath = NULL; 674 uchar_t *bootp; 675 uint_t bootp_len; 676 677 if (ddi_prop_lookup_string(DDI_DEV_T_ANY, ddi_root_node(), 678 DDI_PROP_DONTPASS, BP_BOOT_MAC, &macstr) == DDI_SUCCESS) { 679 /* 680 * hard coded ether mac len for booting floppy on 681 * machines with old cards 682 */ 683 boot_maclen = ether_aton(macstr, boot_macaddr); 684 if (boot_maclen != 6) { 685 cmn_err(CE_WARN, 686 "malformed boot_mac property, %d bytes", 687 boot_maclen); 688 } 689 ddi_prop_free(macstr); 690 } else if (ddi_prop_lookup_byte_array(DDI_DEV_T_ANY, ddi_root_node(), 691 DDI_PROP_DONTPASS, BP_BOOTP_RESPONSE, &bootp, &bootp_len) 692 == DDI_SUCCESS) { 693 694 /* 695 * These offsets are defined by dhcp standard 696 * Should use structure offsets 697 */ 698 boot_maclen = *(bootp + 2); 699 ASSERT(boot_maclen <= 16); 700 bcopy(bootp + 28, boot_macaddr, boot_maclen); 701 702 dhcack = kmem_alloc(bootp_len, KM_SLEEP); 703 bcopy(bootp, dhcack, bootp_len); 704 dhcacklen = bootp_len; 705 706 ddi_prop_free(bootp); 707 } else if (iscsiboot_prop != NULL) { 708 bcopy(iscsiboot_prop->boot_nic.nic_mac, 709 boot_macaddr, IB_BOOT_MACLEN); 710 boot_maclen = IB_BOOT_MACLEN; 711 } else { 712 return (NULL); 713 } 714 715 ddi_walk_devs(ddi_root_node(), matchmac, (void *)&devpath); 716 return (devpath); 717 718 #endif /* _OBP */ 719 } 720 721 #ifndef _OBP 722 723 /* 724 * Get boot path from the boot_mac address 725 */ 726 /*ARGSUSED*/ 727 static int 728 matchmac(dev_info_t *dip, void *arg) 729 { 730 char **devpathp = (char **)arg; 731 char *model_str; 732 uchar_t *macaddr; 733 size_t maclen; 734 735 /* XXX Should use "device-type" per IEEE 1275 */ 736 if (ddi_prop_lookup_string(DDI_DEV_T_ANY, dip, 0, 737 "model", &model_str) != DDI_SUCCESS) 738 return (DDI_WALK_CONTINUE); 739 740 if (strcmp(model_str, "Ethernet controller") != 0) { 741 ddi_prop_free(model_str); 742 return (DDI_WALK_CONTINUE); 743 } 744 ddi_prop_free(model_str); 745 746 /* We have a network device now */ 747 if (i_ddi_attach_node_hierarchy(dip) != DDI_SUCCESS) { 748 return (DDI_WALK_CONTINUE); 749 } 750 751 ASSERT(boot_maclen != 0); 752 macaddr = getmacaddr(dip, &maclen); 753 if (macaddr == NULL) 754 return (DDI_WALK_CONTINUE); 755 756 if (maclen != boot_maclen || 757 bcmp(macaddr, boot_macaddr, maclen) != 0) { 758 kmem_free(macaddr, maclen); 759 return (DDI_WALK_CONTINUE); 760 } 761 762 /* found hardware with the mac address */ 763 (void) localetheraddr((struct ether_addr *)macaddr, NULL); 764 kmem_free(macaddr, maclen); 765 766 *devpathp = kmem_alloc(MAXPATHLEN, KM_SLEEP); 767 (void) ddi_pathname(dip, *devpathp); 768 769 /* fill in dhcifname */ 770 if (dhcack) { 771 (void) snprintf(dhcifname, IFNAMSIZ, "%s%d", 772 ddi_driver_name(dip), i_ddi_devi_get_ppa(dip)); 773 } 774 return (DDI_WALK_TERMINATE); 775 } 776 777 static uchar_t * 778 getmacaddr(dev_info_t *dip, size_t *maclenp) 779 { 780 int rc, ppa; 781 ldi_ident_t li; 782 ldi_handle_t lh; 783 const char *drv_name = ddi_driver_name(dip); 784 char *clonepath; 785 uchar_t *macaddr = NULL; 786 787 if (rc = ldi_ident_from_mod(&modlinkage, &li)) { 788 cmn_err(CE_WARN, 789 "getmacaddr: ldi_ident_from_mod failed: %d\n", rc); 790 return (NULL); 791 } 792 793 clonepath = kmem_alloc(MAXPATHLEN, KM_SLEEP); 794 (void) snprintf(clonepath, MAXPATHLEN, 795 "/devices/pseudo/clone@0:%s", drv_name); 796 797 rc = ldi_open_by_name(clonepath, FREAD|FWRITE, CRED(), &lh, li); 798 ldi_ident_release(li); 799 if (rc) { 800 cmn_err(CE_WARN, 801 "getmacaddr: ldi_open_by_name(%s) failed: %d\n", 802 clonepath, rc); 803 kmem_free(clonepath, MAXPATHLEN); 804 return (NULL); 805 } 806 kmem_free(clonepath, MAXPATHLEN); 807 808 ppa = i_ddi_devi_get_ppa(dip); 809 if ((dl_attach(lh, ppa, NULL) != 0) || 810 (dl_bind(lh, ETHERTYPE_IP, NULL) != 0)) { 811 (void) ldi_close(lh, FREAD|FWRITE, CRED()); 812 cmn_err(CE_WARN, 813 "getmacaddr: dl_attach/bind(%s%d) failed: %d\n", 814 drv_name, ppa, rc); 815 return (NULL); 816 } 817 818 *maclenp = ETHERADDRL; 819 macaddr = kmem_alloc(ETHERADDRL, KM_SLEEP); 820 if (dl_phys_addr(lh, macaddr, maclenp, NULL) != 0 || 821 *maclenp != ETHERADDRL) { 822 kmem_free(macaddr, ETHERADDRL); 823 macaddr = NULL; 824 *maclenp = 0; 825 cmn_err(CE_WARN, 826 "getmacaddr: dl_phys_addr(%s%d) failed: %d\n", 827 drv_name, ppa, rc); 828 } 829 (void) ldi_close(lh, FREAD|FWRITE, CRED()); 830 return (macaddr); 831 } 832 #endif /* !_OBP */ 833