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 /* 23 * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved. 24 * Copyright 2019 Joyent, Inc. 25 * Copyright 2017 RackTop Systems. 26 * Copyright 2020 OmniOS Community Edition (OmniOSce) Association. 27 */ 28 29 /* 30 * - General Introduction: 31 * 32 * This file contains the implementation of the MAC client kernel 33 * API and related code. The MAC client API allows a kernel module 34 * to gain access to a MAC instance (physical NIC, link aggregation, etc). 35 * It allows a MAC client to associate itself with a MAC address, 36 * VLANs, callback functions for data traffic and for promiscuous mode. 37 * The MAC client API is also used to specify the properties associated 38 * with a MAC client, such as bandwidth limits, priority, CPUS, etc. 39 * These properties are further used to determine the hardware resources 40 * to allocate to the various MAC clients. 41 * 42 * - Primary MAC clients: 43 * 44 * The MAC client API refers to "primary MAC clients". A primary MAC 45 * client is a client which "owns" the primary MAC address of 46 * the underlying MAC instance. The primary MAC address is called out 47 * since it is associated with specific semantics: the primary MAC 48 * address is the MAC address which is assigned to the IP interface 49 * when it is plumbed, and the primary MAC address is assigned 50 * to VLAN data-links. The primary address of a MAC instance can 51 * also change dynamically from under the MAC client, for example 52 * as a result of a change of state of a link aggregation. In that 53 * case the MAC layer automatically updates all data-structures which 54 * refer to the current value of the primary MAC address. Typical 55 * primary MAC clients are dls, aggr, and xnb. A typical non-primary 56 * MAC client is the vnic driver. 57 * 58 * - Virtual Switching: 59 * 60 * The MAC layer implements a virtual switch between the MAC clients 61 * (primary and non-primary) defined on top of the same underlying 62 * NIC (physical, link aggregation, etc). The virtual switch is 63 * VLAN-aware, i.e. it allows multiple MAC clients to be member 64 * of one or more VLANs, and the virtual switch will distribute 65 * multicast tagged packets only to the member of the corresponding 66 * VLANs. 67 * 68 * - Upper vs Lower MAC: 69 * 70 * Creating a VNIC on top of a MAC instance effectively causes 71 * two MAC instances to be layered on top of each other, one for 72 * the VNIC(s), one for the underlying MAC instance (physical NIC, 73 * link aggregation, etc). In the code below we refer to the 74 * underlying NIC as the "lower MAC", and we refer to VNICs as 75 * the "upper MAC". 76 * 77 * - Pass-through for VNICs: 78 * 79 * When VNICs are created on top of an underlying MAC, this causes 80 * a layering of two MAC instances. Since the lower MAC already 81 * does the switching and demultiplexing to its MAC clients, the 82 * upper MAC would simply have to pass packets to the layer below 83 * or above it, which would introduce overhead. In order to avoid 84 * this overhead, the MAC layer implements a pass-through mechanism 85 * for VNICs. When a VNIC opens the lower MAC instance, it saves 86 * the MAC client handle it optains from the MAC layer. When a MAC 87 * client opens a VNIC (upper MAC), the MAC layer detects that 88 * the MAC being opened is a VNIC, and gets the MAC client handle 89 * that the VNIC driver obtained from the lower MAC. This exchange 90 * is done through a private capability between the MAC layer 91 * and the VNIC driver. The upper MAC then returns that handle 92 * directly to its MAC client. Any operation done by the upper 93 * MAC client is now done on the lower MAC client handle, which 94 * allows the VNIC driver to be completely bypassed for the 95 * performance sensitive data-path. 96 * 97 * - Secondary MACs for VNICs: 98 * 99 * VNICs support multiple upper mac clients to enable support for 100 * multiple MAC addresses on the VNIC. When the VNIC is created the 101 * initial mac client is the primary upper mac. Any additional mac 102 * clients are secondary macs. These are kept in sync with the primary 103 * (for things such as the rx function and resource control settings) 104 * using the same private capability interface between the MAC layer 105 * and the VNIC layer. 106 * 107 */ 108 109 #include <sys/types.h> 110 #include <sys/conf.h> 111 #include <sys/id_space.h> 112 #include <sys/esunddi.h> 113 #include <sys/stat.h> 114 #include <sys/mkdev.h> 115 #include <sys/stream.h> 116 #include <sys/strsun.h> 117 #include <sys/strsubr.h> 118 #include <sys/dlpi.h> 119 #include <sys/modhash.h> 120 #include <sys/mac_impl.h> 121 #include <sys/mac_client_impl.h> 122 #include <sys/mac_soft_ring.h> 123 #include <sys/mac_stat.h> 124 #include <sys/dls.h> 125 #include <sys/dld.h> 126 #include <sys/modctl.h> 127 #include <sys/fs/dv_node.h> 128 #include <sys/thread.h> 129 #include <sys/proc.h> 130 #include <sys/callb.h> 131 #include <sys/cpuvar.h> 132 #include <sys/atomic.h> 133 #include <sys/sdt.h> 134 #include <sys/mac_flow.h> 135 #include <sys/ddi_intr_impl.h> 136 #include <sys/disp.h> 137 #include <sys/sdt.h> 138 #include <sys/vnic.h> 139 #include <sys/vnic_impl.h> 140 #include <sys/vlan.h> 141 #include <inet/ip.h> 142 #include <inet/ip6.h> 143 #include <sys/exacct.h> 144 #include <sys/exacct_impl.h> 145 #include <inet/nd.h> 146 #include <sys/ethernet.h> 147 148 kmem_cache_t *mac_client_impl_cache; 149 kmem_cache_t *mac_promisc_impl_cache; 150 151 static boolean_t mac_client_single_rcvr(mac_client_impl_t *); 152 static flow_entry_t *mac_client_swap_mciflent(mac_client_impl_t *); 153 static flow_entry_t *mac_client_get_flow(mac_client_impl_t *, 154 mac_unicast_impl_t *); 155 static void mac_client_remove_flow_from_list(mac_client_impl_t *, 156 flow_entry_t *); 157 static void mac_client_add_to_flow_list(mac_client_impl_t *, flow_entry_t *); 158 static void mac_rename_flow_names(mac_client_impl_t *, const char *); 159 static void mac_virtual_link_update(mac_impl_t *); 160 static int mac_client_datapath_setup(mac_client_impl_t *, uint16_t, 161 uint8_t *, mac_resource_props_t *, boolean_t, mac_unicast_impl_t *); 162 static void mac_client_datapath_teardown(mac_client_handle_t, 163 mac_unicast_impl_t *, flow_entry_t *); 164 static int mac_resource_ctl_set(mac_client_handle_t, mac_resource_props_t *); 165 166 /* ARGSUSED */ 167 static int 168 i_mac_client_impl_ctor(void *buf, void *arg, int kmflag) 169 { 170 int i; 171 mac_client_impl_t *mcip = buf; 172 173 bzero(buf, MAC_CLIENT_IMPL_SIZE); 174 mutex_init(&mcip->mci_tx_cb_lock, NULL, MUTEX_DRIVER, NULL); 175 mcip->mci_tx_notify_cb_info.mcbi_lockp = &mcip->mci_tx_cb_lock; 176 177 ASSERT(mac_tx_percpu_cnt >= 0); 178 for (i = 0; i <= mac_tx_percpu_cnt; i++) { 179 mutex_init(&mcip->mci_tx_pcpu[i].pcpu_tx_lock, NULL, 180 MUTEX_DRIVER, NULL); 181 } 182 cv_init(&mcip->mci_tx_cv, NULL, CV_DRIVER, NULL); 183 184 return (0); 185 } 186 187 /* ARGSUSED */ 188 static void 189 i_mac_client_impl_dtor(void *buf, void *arg) 190 { 191 int i; 192 mac_client_impl_t *mcip = buf; 193 194 ASSERT(mcip->mci_promisc_list == NULL); 195 ASSERT(mcip->mci_unicast_list == NULL); 196 ASSERT(mcip->mci_state_flags == 0); 197 ASSERT(mcip->mci_tx_flag == 0); 198 199 mutex_destroy(&mcip->mci_tx_cb_lock); 200 201 ASSERT(mac_tx_percpu_cnt >= 0); 202 for (i = 0; i <= mac_tx_percpu_cnt; i++) { 203 ASSERT(mcip->mci_tx_pcpu[i].pcpu_tx_refcnt == 0); 204 mutex_destroy(&mcip->mci_tx_pcpu[i].pcpu_tx_lock); 205 } 206 cv_destroy(&mcip->mci_tx_cv); 207 } 208 209 /* ARGSUSED */ 210 static int 211 i_mac_promisc_impl_ctor(void *buf, void *arg, int kmflag) 212 { 213 mac_promisc_impl_t *mpip = buf; 214 215 bzero(buf, sizeof (mac_promisc_impl_t)); 216 mpip->mpi_mci_link.mcb_objp = buf; 217 mpip->mpi_mci_link.mcb_objsize = sizeof (mac_promisc_impl_t); 218 mpip->mpi_mi_link.mcb_objp = buf; 219 mpip->mpi_mi_link.mcb_objsize = sizeof (mac_promisc_impl_t); 220 return (0); 221 } 222 223 /* ARGSUSED */ 224 static void 225 i_mac_promisc_impl_dtor(void *buf, void *arg) 226 { 227 mac_promisc_impl_t *mpip = buf; 228 229 ASSERT(mpip->mpi_mci_link.mcb_objp != NULL); 230 ASSERT(mpip->mpi_mci_link.mcb_objsize == sizeof (mac_promisc_impl_t)); 231 ASSERT(mpip->mpi_mi_link.mcb_objp == mpip->mpi_mci_link.mcb_objp); 232 ASSERT(mpip->mpi_mi_link.mcb_objsize == sizeof (mac_promisc_impl_t)); 233 234 mpip->mpi_mci_link.mcb_objp = NULL; 235 mpip->mpi_mci_link.mcb_objsize = 0; 236 mpip->mpi_mi_link.mcb_objp = NULL; 237 mpip->mpi_mi_link.mcb_objsize = 0; 238 239 ASSERT(mpip->mpi_mci_link.mcb_flags == 0); 240 mpip->mpi_mci_link.mcb_objsize = 0; 241 } 242 243 void 244 mac_client_init(void) 245 { 246 ASSERT(mac_tx_percpu_cnt >= 0); 247 248 mac_client_impl_cache = kmem_cache_create("mac_client_impl_cache", 249 MAC_CLIENT_IMPL_SIZE, 0, i_mac_client_impl_ctor, 250 i_mac_client_impl_dtor, NULL, NULL, NULL, 0); 251 ASSERT(mac_client_impl_cache != NULL); 252 253 mac_promisc_impl_cache = kmem_cache_create("mac_promisc_impl_cache", 254 sizeof (mac_promisc_impl_t), 0, i_mac_promisc_impl_ctor, 255 i_mac_promisc_impl_dtor, NULL, NULL, NULL, 0); 256 ASSERT(mac_promisc_impl_cache != NULL); 257 } 258 259 void 260 mac_client_fini(void) 261 { 262 kmem_cache_destroy(mac_client_impl_cache); 263 kmem_cache_destroy(mac_promisc_impl_cache); 264 } 265 266 /* 267 * Return the lower MAC client handle from the VNIC driver for the 268 * specified VNIC MAC instance. 269 */ 270 mac_client_impl_t * 271 mac_vnic_lower(mac_impl_t *mip) 272 { 273 mac_capab_vnic_t cap; 274 mac_client_impl_t *mcip; 275 276 VERIFY(i_mac_capab_get((mac_handle_t)mip, MAC_CAPAB_VNIC, &cap)); 277 mcip = cap.mcv_mac_client_handle(cap.mcv_arg); 278 279 return (mcip); 280 } 281 282 /* 283 * Update the secondary macs 284 */ 285 void 286 mac_vnic_secondary_update(mac_impl_t *mip) 287 { 288 mac_capab_vnic_t cap; 289 290 VERIFY(i_mac_capab_get((mac_handle_t)mip, MAC_CAPAB_VNIC, &cap)); 291 cap.mcv_mac_secondary_update(cap.mcv_arg); 292 } 293 294 /* 295 * Return the MAC client handle of the primary MAC client for the 296 * specified MAC instance, or NULL otherwise. 297 */ 298 mac_client_impl_t * 299 mac_primary_client_handle(mac_impl_t *mip) 300 { 301 mac_client_impl_t *mcip; 302 303 if (mip->mi_state_flags & MIS_IS_VNIC) 304 return (mac_vnic_lower(mip)); 305 306 ASSERT(MAC_PERIM_HELD((mac_handle_t)mip)); 307 308 for (mcip = mip->mi_clients_list; mcip != NULL; 309 mcip = mcip->mci_client_next) { 310 if (MCIP_DATAPATH_SETUP(mcip) && mac_is_primary_client(mcip)) 311 return (mcip); 312 } 313 return (NULL); 314 } 315 316 /* 317 * Open a MAC specified by its MAC name. 318 */ 319 int 320 mac_open(const char *macname, mac_handle_t *mhp) 321 { 322 mac_impl_t *mip; 323 int err; 324 325 /* 326 * Look up its entry in the global hash table. 327 */ 328 if ((err = mac_hold(macname, &mip)) != 0) 329 return (err); 330 331 /* 332 * Hold the dip associated to the MAC to prevent it from being 333 * detached. For a softmac, its underlying dip is held by the 334 * mi_open() callback. 335 * 336 * This is done to be more tolerant with some defective drivers, 337 * which incorrectly handle mac_unregister() failure in their 338 * xxx_detach() routine. For example, some drivers ignore the 339 * failure of mac_unregister() and free all resources that 340 * that are needed for data transmition. 341 */ 342 e_ddi_hold_devi(mip->mi_dip); 343 344 if (!(mip->mi_callbacks->mc_callbacks & MC_OPEN)) { 345 *mhp = (mac_handle_t)mip; 346 return (0); 347 } 348 349 /* 350 * The mac perimeter is used in both mac_open and mac_close by the 351 * framework to single thread the MC_OPEN/MC_CLOSE of drivers. 352 */ 353 i_mac_perim_enter(mip); 354 mip->mi_oref++; 355 if (mip->mi_oref != 1 || ((err = mip->mi_open(mip->mi_driver)) == 0)) { 356 *mhp = (mac_handle_t)mip; 357 i_mac_perim_exit(mip); 358 return (0); 359 } 360 mip->mi_oref--; 361 ddi_release_devi(mip->mi_dip); 362 mac_rele(mip); 363 i_mac_perim_exit(mip); 364 return (err); 365 } 366 367 /* 368 * Open a MAC specified by its linkid. 369 */ 370 int 371 mac_open_by_linkid(datalink_id_t linkid, mac_handle_t *mhp) 372 { 373 dls_dl_handle_t dlh; 374 int err; 375 376 if ((err = dls_devnet_hold_tmp(linkid, &dlh)) != 0) 377 return (err); 378 379 dls_devnet_prop_task_wait(dlh); 380 381 err = mac_open(dls_devnet_mac(dlh), mhp); 382 383 dls_devnet_rele_tmp(dlh); 384 return (err); 385 } 386 387 /* 388 * Open a MAC specified by its link name. 389 */ 390 int 391 mac_open_by_linkname(const char *link, mac_handle_t *mhp) 392 { 393 datalink_id_t linkid; 394 int err; 395 396 if ((err = dls_mgmt_get_linkid(link, &linkid)) != 0) 397 return (err); 398 return (mac_open_by_linkid(linkid, mhp)); 399 } 400 401 /* 402 * Close the specified MAC. 403 */ 404 void 405 mac_close(mac_handle_t mh) 406 { 407 mac_impl_t *mip = (mac_impl_t *)mh; 408 409 i_mac_perim_enter(mip); 410 /* 411 * The mac perimeter is used in both mac_open and mac_close by the 412 * framework to single thread the MC_OPEN/MC_CLOSE of drivers. 413 */ 414 if (mip->mi_callbacks->mc_callbacks & MC_OPEN) { 415 ASSERT(mip->mi_oref != 0); 416 if (--mip->mi_oref == 0) { 417 if ((mip->mi_callbacks->mc_callbacks & MC_CLOSE)) 418 mip->mi_close(mip->mi_driver); 419 } 420 } 421 i_mac_perim_exit(mip); 422 ddi_release_devi(mip->mi_dip); 423 mac_rele(mip); 424 } 425 426 /* 427 * Misc utility functions to retrieve various information about a MAC 428 * instance or a MAC client. 429 */ 430 431 const mac_info_t * 432 mac_info(mac_handle_t mh) 433 { 434 return (&((mac_impl_t *)mh)->mi_info); 435 } 436 437 dev_info_t * 438 mac_devinfo_get(mac_handle_t mh) 439 { 440 return (((mac_impl_t *)mh)->mi_dip); 441 } 442 443 void * 444 mac_driver(mac_handle_t mh) 445 { 446 return (((mac_impl_t *)mh)->mi_driver); 447 } 448 449 const char * 450 mac_name(mac_handle_t mh) 451 { 452 return (((mac_impl_t *)mh)->mi_name); 453 } 454 455 int 456 mac_type(mac_handle_t mh) 457 { 458 return (((mac_impl_t *)mh)->mi_type->mt_type); 459 } 460 461 int 462 mac_nativetype(mac_handle_t mh) 463 { 464 return (((mac_impl_t *)mh)->mi_type->mt_nativetype); 465 } 466 467 char * 468 mac_client_name(mac_client_handle_t mch) 469 { 470 return (((mac_client_impl_t *)mch)->mci_name); 471 } 472 473 minor_t 474 mac_minor(mac_handle_t mh) 475 { 476 return (((mac_impl_t *)mh)->mi_minor); 477 } 478 479 /* 480 * Return the VID associated with a MAC client. This function should 481 * be called for clients which are associated with only one VID. 482 */ 483 uint16_t 484 mac_client_vid(mac_client_handle_t mch) 485 { 486 uint16_t vid = VLAN_ID_NONE; 487 mac_client_impl_t *mcip = (mac_client_impl_t *)mch; 488 flow_desc_t flow_desc; 489 490 if (mcip->mci_nflents == 0) 491 return (vid); 492 493 ASSERT(MCIP_DATAPATH_SETUP(mcip) && mac_client_single_rcvr(mcip)); 494 495 mac_flow_get_desc(mcip->mci_flent, &flow_desc); 496 if ((flow_desc.fd_mask & FLOW_LINK_VID) != 0) 497 vid = flow_desc.fd_vid; 498 499 return (vid); 500 } 501 502 /* 503 * Return whether the specified MAC client corresponds to a VLAN VNIC. 504 */ 505 boolean_t 506 mac_client_is_vlan_vnic(mac_client_handle_t mch) 507 { 508 mac_client_impl_t *mcip = (mac_client_impl_t *)mch; 509 510 return (((mcip->mci_state_flags & MCIS_IS_VNIC) != 0) && 511 ((mcip->mci_flent->fe_type & FLOW_PRIMARY_MAC) != 0)); 512 } 513 514 /* 515 * Return the link speed associated with the specified MAC client. 516 * 517 * The link speed of a MAC client is equal to the smallest value of 518 * 1) the current link speed of the underlying NIC, or 519 * 2) the bandwidth limit set for the MAC client. 520 * 521 * Note that the bandwidth limit can be higher than the speed 522 * of the underlying NIC. This is allowed to avoid spurious 523 * administration action failures or artifically lowering the 524 * bandwidth limit of a link that may have temporarily lowered 525 * its link speed due to hardware problem or administrator action. 526 */ 527 static uint64_t 528 mac_client_ifspeed(mac_client_impl_t *mcip) 529 { 530 mac_impl_t *mip = mcip->mci_mip; 531 uint64_t nic_speed; 532 533 nic_speed = mac_stat_get((mac_handle_t)mip, MAC_STAT_IFSPEED); 534 535 if (nic_speed == 0) { 536 return (0); 537 } else { 538 uint64_t policy_limit = (uint64_t)-1; 539 540 if (MCIP_RESOURCE_PROPS_MASK(mcip) & MRP_MAXBW) 541 policy_limit = MCIP_RESOURCE_PROPS_MAXBW(mcip); 542 543 return (MIN(policy_limit, nic_speed)); 544 } 545 } 546 547 /* 548 * Return the link state of the specified client. If here are more 549 * than one clients of the underying mac_impl_t, the link state 550 * will always be UP regardless of the link state of the underlying 551 * mac_impl_t. This is needed to allow the MAC clients to continue 552 * to communicate with each other even when the physical link of 553 * their mac_impl_t is down. 554 */ 555 static uint64_t 556 mac_client_link_state(mac_client_impl_t *mcip) 557 { 558 mac_impl_t *mip = mcip->mci_mip; 559 uint16_t vid; 560 mac_client_impl_t *mci_list; 561 mac_unicast_impl_t *mui_list, *oth_mui_list; 562 563 /* 564 * Returns LINK_STATE_UP if there are other MAC clients defined on 565 * mac_impl_t which share same VLAN ID as that of mcip. Note that 566 * if 'mcip' has more than one VID's then we match ANY one of the 567 * VID's with other MAC client's VID's and return LINK_STATE_UP. 568 */ 569 rw_enter(&mcip->mci_rw_lock, RW_READER); 570 for (mui_list = mcip->mci_unicast_list; mui_list != NULL; 571 mui_list = mui_list->mui_next) { 572 vid = mui_list->mui_vid; 573 for (mci_list = mip->mi_clients_list; mci_list != NULL; 574 mci_list = mci_list->mci_client_next) { 575 if (mci_list == mcip) 576 continue; 577 for (oth_mui_list = mci_list->mci_unicast_list; 578 oth_mui_list != NULL; oth_mui_list = oth_mui_list-> 579 mui_next) { 580 if (vid == oth_mui_list->mui_vid) { 581 rw_exit(&mcip->mci_rw_lock); 582 return (LINK_STATE_UP); 583 } 584 } 585 } 586 } 587 rw_exit(&mcip->mci_rw_lock); 588 589 return (mac_stat_get((mac_handle_t)mip, MAC_STAT_LINK_STATE)); 590 } 591 592 /* 593 * These statistics are consumed by dladm show-link -s <vnic>, 594 * dladm show-vnic -s and netstat. With the introduction of dlstat, 595 * dladm show-link -s and dladm show-vnic -s witll be EOL'ed while 596 * netstat will consume from kstats introduced for dlstat. This code 597 * will be removed at that time. 598 */ 599 600 /* 601 * Return the statistics of a MAC client. These statistics are different 602 * then the statistics of the underlying MAC which are returned by 603 * mac_stat_get(). 604 * 605 * Note that for things based on the tx and rx stats, mac will end up clobbering 606 * those stats when the underlying set of rings in the srs changes. As such, we 607 * need to source not only the current set, but also the historical set when 608 * returning to the client, lest our counters appear to go backwards. 609 */ 610 uint64_t 611 mac_client_stat_get(mac_client_handle_t mch, uint_t stat) 612 { 613 mac_client_impl_t *mcip = (mac_client_impl_t *)mch; 614 mac_impl_t *mip = mcip->mci_mip; 615 flow_entry_t *flent = mcip->mci_flent; 616 mac_soft_ring_set_t *mac_srs; 617 mac_rx_stats_t *mac_rx_stat, *old_rx_stat; 618 mac_tx_stats_t *mac_tx_stat, *old_tx_stat; 619 int i; 620 uint64_t val = 0; 621 622 mac_srs = (mac_soft_ring_set_t *)(flent->fe_tx_srs); 623 mac_tx_stat = &mac_srs->srs_tx.st_stat; 624 old_rx_stat = &mcip->mci_misc_stat.mms_defunctrxlanestats; 625 old_tx_stat = &mcip->mci_misc_stat.mms_defuncttxlanestats; 626 627 switch (stat) { 628 case MAC_STAT_LINK_STATE: 629 val = mac_client_link_state(mcip); 630 break; 631 case MAC_STAT_LINK_UP: 632 val = (mac_client_link_state(mcip) == LINK_STATE_UP); 633 break; 634 case MAC_STAT_PROMISC: 635 val = mac_stat_get((mac_handle_t)mip, MAC_STAT_PROMISC); 636 break; 637 case MAC_STAT_LOWLINK_STATE: 638 val = mac_stat_get((mac_handle_t)mip, MAC_STAT_LOWLINK_STATE); 639 break; 640 case MAC_STAT_IFSPEED: 641 val = mac_client_ifspeed(mcip); 642 break; 643 case MAC_STAT_MULTIRCV: 644 val = mcip->mci_misc_stat.mms_multircv; 645 break; 646 case MAC_STAT_BRDCSTRCV: 647 val = mcip->mci_misc_stat.mms_brdcstrcv; 648 break; 649 case MAC_STAT_MULTIXMT: 650 val = mcip->mci_misc_stat.mms_multixmt; 651 break; 652 case MAC_STAT_BRDCSTXMT: 653 val = mcip->mci_misc_stat.mms_brdcstxmt; 654 break; 655 case MAC_STAT_OBYTES: 656 val = mac_tx_stat->mts_obytes; 657 val += old_tx_stat->mts_obytes; 658 break; 659 case MAC_STAT_OPACKETS: 660 val = mac_tx_stat->mts_opackets; 661 val += old_tx_stat->mts_opackets; 662 break; 663 case MAC_STAT_OERRORS: 664 val = mac_tx_stat->mts_oerrors; 665 val += old_tx_stat->mts_oerrors; 666 break; 667 case MAC_STAT_IPACKETS: 668 for (i = 0; i < flent->fe_rx_srs_cnt; i++) { 669 mac_srs = (mac_soft_ring_set_t *)flent->fe_rx_srs[i]; 670 mac_rx_stat = &mac_srs->srs_rx.sr_stat; 671 val += mac_rx_stat->mrs_intrcnt + 672 mac_rx_stat->mrs_pollcnt + mac_rx_stat->mrs_lclcnt; 673 } 674 val += old_rx_stat->mrs_intrcnt + old_rx_stat->mrs_pollcnt + 675 old_rx_stat->mrs_lclcnt; 676 break; 677 case MAC_STAT_RBYTES: 678 for (i = 0; i < flent->fe_rx_srs_cnt; i++) { 679 mac_srs = (mac_soft_ring_set_t *)flent->fe_rx_srs[i]; 680 mac_rx_stat = &mac_srs->srs_rx.sr_stat; 681 val += mac_rx_stat->mrs_intrbytes + 682 mac_rx_stat->mrs_pollbytes + 683 mac_rx_stat->mrs_lclbytes; 684 } 685 val += old_rx_stat->mrs_intrbytes + old_rx_stat->mrs_pollbytes + 686 old_rx_stat->mrs_lclbytes; 687 break; 688 case MAC_STAT_IERRORS: 689 for (i = 0; i < flent->fe_rx_srs_cnt; i++) { 690 mac_srs = (mac_soft_ring_set_t *)flent->fe_rx_srs[i]; 691 mac_rx_stat = &mac_srs->srs_rx.sr_stat; 692 val += mac_rx_stat->mrs_ierrors; 693 } 694 val += old_rx_stat->mrs_ierrors; 695 break; 696 default: 697 val = mac_driver_stat_default(mip, stat); 698 break; 699 } 700 701 return (val); 702 } 703 704 /* 705 * Return the statistics of the specified MAC instance. 706 */ 707 uint64_t 708 mac_stat_get(mac_handle_t mh, uint_t stat) 709 { 710 mac_impl_t *mip = (mac_impl_t *)mh; 711 uint64_t val; 712 int ret; 713 714 /* 715 * The range of stat determines where it is maintained. Stat 716 * values from 0 up to (but not including) MAC_STAT_MIN are 717 * mainteined by the mac module itself. Everything else is 718 * maintained by the driver. 719 * 720 * If the mac_impl_t being queried corresponds to a VNIC, 721 * the stats need to be queried from the lower MAC client 722 * corresponding to the VNIC. (The mac_link_update() 723 * invoked by the driver to the lower MAC causes the *lower 724 * MAC* to update its mi_linkstate, and send a notification 725 * to its MAC clients. Due to the VNIC passthrough, 726 * these notifications are sent to the upper MAC clients 727 * of the VNIC directly, and the upper mac_impl_t of the VNIC 728 * does not have a valid mi_linkstate. 729 */ 730 if (stat < MAC_STAT_MIN && !(mip->mi_state_flags & MIS_IS_VNIC)) { 731 /* these stats are maintained by the mac module itself */ 732 switch (stat) { 733 case MAC_STAT_LINK_STATE: 734 return (mip->mi_linkstate); 735 case MAC_STAT_LINK_UP: 736 return (mip->mi_linkstate == LINK_STATE_UP); 737 case MAC_STAT_PROMISC: 738 return (mip->mi_devpromisc != 0); 739 case MAC_STAT_LOWLINK_STATE: 740 return (mip->mi_lowlinkstate); 741 default: 742 ASSERT(B_FALSE); 743 } 744 } 745 746 /* 747 * Call the driver to get the given statistic. 748 */ 749 ret = mip->mi_getstat(mip->mi_driver, stat, &val); 750 if (ret != 0) { 751 /* 752 * The driver doesn't support this statistic. Get the 753 * statistic's default value. 754 */ 755 val = mac_driver_stat_default(mip, stat); 756 } 757 return (val); 758 } 759 760 /* 761 * Query hardware rx ring corresponding to the pseudo ring. 762 */ 763 uint64_t 764 mac_pseudo_rx_ring_stat_get(mac_ring_handle_t handle, uint_t stat) 765 { 766 return (mac_rx_ring_stat_get(handle, stat)); 767 } 768 769 /* 770 * Query hardware tx ring corresponding to the pseudo ring. 771 */ 772 uint64_t 773 mac_pseudo_tx_ring_stat_get(mac_ring_handle_t handle, uint_t stat) 774 { 775 return (mac_tx_ring_stat_get(handle, stat)); 776 } 777 778 /* 779 * Utility function which returns the VID associated with a flow entry. 780 */ 781 uint16_t 782 i_mac_flow_vid(flow_entry_t *flent) 783 { 784 flow_desc_t flow_desc; 785 786 mac_flow_get_desc(flent, &flow_desc); 787 788 if ((flow_desc.fd_mask & FLOW_LINK_VID) != 0) 789 return (flow_desc.fd_vid); 790 return (VLAN_ID_NONE); 791 } 792 793 /* 794 * Verify the validity of the specified unicast MAC address. Returns B_TRUE 795 * if the address is valid, B_FALSE otherwise (multicast address, or incorrect 796 * length. 797 */ 798 boolean_t 799 mac_unicst_verify(mac_handle_t mh, const uint8_t *addr, uint_t len) 800 { 801 mac_impl_t *mip = (mac_impl_t *)mh; 802 803 /* 804 * Verify the address. No lock is needed since mi_type and plugin 805 * details don't change after mac_register(). 806 */ 807 if ((len != mip->mi_type->mt_addr_length) || 808 (mip->mi_type->mt_ops.mtops_unicst_verify(addr, 809 mip->mi_pdata)) != 0) { 810 return (B_FALSE); 811 } else { 812 return (B_TRUE); 813 } 814 } 815 816 void 817 mac_sdu_get(mac_handle_t mh, uint_t *min_sdu, uint_t *max_sdu) 818 { 819 mac_impl_t *mip = (mac_impl_t *)mh; 820 821 if (min_sdu != NULL) 822 *min_sdu = mip->mi_sdu_min; 823 if (max_sdu != NULL) 824 *max_sdu = mip->mi_sdu_max; 825 } 826 827 void 828 mac_sdu_get2(mac_handle_t mh, uint_t *min_sdu, uint_t *max_sdu, 829 uint_t *multicast_sdu) 830 { 831 mac_impl_t *mip = (mac_impl_t *)mh; 832 833 if (min_sdu != NULL) 834 *min_sdu = mip->mi_sdu_min; 835 if (max_sdu != NULL) 836 *max_sdu = mip->mi_sdu_max; 837 if (multicast_sdu != NULL) 838 *multicast_sdu = mip->mi_sdu_multicast; 839 } 840 841 /* 842 * Update the MAC unicast address of the specified client's flows. Currently 843 * only one unicast MAC unicast address is allowed per client. 844 */ 845 static void 846 mac_unicast_update_client_flow(mac_client_impl_t *mcip) 847 { 848 mac_impl_t *mip = mcip->mci_mip; 849 flow_entry_t *flent = mcip->mci_flent; 850 mac_address_t *map = mcip->mci_unicast; 851 flow_desc_t flow_desc; 852 853 ASSERT(MAC_PERIM_HELD((mac_handle_t)mip)); 854 ASSERT(flent != NULL); 855 856 mac_flow_get_desc(flent, &flow_desc); 857 ASSERT(flow_desc.fd_mask & FLOW_LINK_DST); 858 859 bcopy(map->ma_addr, flow_desc.fd_dst_mac, map->ma_len); 860 mac_flow_set_desc(flent, &flow_desc); 861 862 /* 863 * The v6 local and SLAAC addrs (used by mac protection) need to be 864 * regenerated because our mac address has changed. 865 */ 866 mac_protect_update_mac_token(mcip); 867 868 /* 869 * When there are multiple VLANs sharing the same MAC address, 870 * each gets its own MAC client, except when running on sun4v 871 * vsw. In that case the mci_flent_list is used to place 872 * multiple VLAN flows on one MAC client. If we ever get rid 873 * of vsw then this code can go, but until then we need to 874 * update all flow entries. 875 */ 876 for (flent = mcip->mci_flent_list; flent != NULL; 877 flent = flent->fe_client_next) { 878 mac_flow_get_desc(flent, &flow_desc); 879 if (!(flent->fe_type & FLOW_PRIMARY_MAC || 880 flent->fe_type & FLOW_VNIC_MAC)) 881 continue; 882 883 bcopy(map->ma_addr, flow_desc.fd_dst_mac, map->ma_len); 884 mac_flow_set_desc(flent, &flow_desc); 885 } 886 } 887 888 /* 889 * Update all clients that share the same unicast address. 890 */ 891 void 892 mac_unicast_update_clients(mac_impl_t *mip, mac_address_t *map) 893 { 894 mac_client_impl_t *mcip; 895 896 ASSERT(MAC_PERIM_HELD((mac_handle_t)mip)); 897 898 /* 899 * Find all clients that share the same unicast MAC address and update 900 * them appropriately. 901 */ 902 for (mcip = mip->mi_clients_list; mcip != NULL; 903 mcip = mcip->mci_client_next) { 904 /* 905 * Ignore clients that don't share this MAC address. 906 */ 907 if (map != mcip->mci_unicast) 908 continue; 909 910 /* 911 * Update those clients with same old unicast MAC address. 912 */ 913 mac_unicast_update_client_flow(mcip); 914 } 915 } 916 917 /* 918 * Update the unicast MAC address of the specified VNIC MAC client. 919 * 920 * Check whether the operation is valid. Any of following cases should fail: 921 * 922 * 1. It's a VLAN type of VNIC. 923 * 2. The new value is current "primary" MAC address. 924 * 3. The current MAC address is shared with other clients. 925 * 4. The new MAC address has been used. This case will be valid when 926 * client migration is fully supported. 927 */ 928 int 929 mac_vnic_unicast_set(mac_client_handle_t mch, const uint8_t *addr) 930 { 931 mac_client_impl_t *mcip = (mac_client_impl_t *)mch; 932 mac_impl_t *mip = mcip->mci_mip; 933 mac_address_t *map = mcip->mci_unicast; 934 int err; 935 936 ASSERT(!(mip->mi_state_flags & MIS_IS_VNIC)); 937 ASSERT(mcip->mci_state_flags & MCIS_IS_VNIC); 938 ASSERT(mcip->mci_flags != MAC_CLIENT_FLAGS_PRIMARY); 939 940 i_mac_perim_enter(mip); 941 942 /* 943 * If this is a VLAN type of VNIC, it's using "primary" MAC address 944 * of the underlying interface. Must fail here. Refer to case 1 above. 945 */ 946 if (bcmp(map->ma_addr, mip->mi_addr, map->ma_len) == 0) { 947 i_mac_perim_exit(mip); 948 return (ENOTSUP); 949 } 950 951 /* 952 * If the new address is the "primary" one, must fail. Refer to 953 * case 2 above. 954 */ 955 if (bcmp(addr, mip->mi_addr, map->ma_len) == 0) { 956 i_mac_perim_exit(mip); 957 return (EACCES); 958 } 959 960 /* 961 * If the address is shared by multiple clients, must fail. Refer 962 * to case 3 above. 963 */ 964 if (mac_check_macaddr_shared(map)) { 965 i_mac_perim_exit(mip); 966 return (EBUSY); 967 } 968 969 /* 970 * If the new address has been used, must fail for now. Refer to 971 * case 4 above. 972 */ 973 if (mac_find_macaddr(mip, (uint8_t *)addr) != NULL) { 974 i_mac_perim_exit(mip); 975 return (ENOTSUP); 976 } 977 978 /* 979 * Update the MAC address. 980 */ 981 err = mac_update_macaddr(map, (uint8_t *)addr); 982 983 if (err != 0) { 984 i_mac_perim_exit(mip); 985 return (err); 986 } 987 988 /* 989 * Update all flows of this MAC client. 990 */ 991 mac_unicast_update_client_flow(mcip); 992 993 i_mac_perim_exit(mip); 994 return (0); 995 } 996 997 /* 998 * Program the new primary unicast address of the specified MAC. 999 * 1000 * Function mac_update_macaddr() takes care different types of underlying 1001 * MAC. If the underlying MAC is VNIC, the VNIC driver must have registerd 1002 * mi_unicst() entry point, that indirectly calls mac_vnic_unicast_set() 1003 * which will take care of updating the MAC address of the corresponding 1004 * MAC client. 1005 * 1006 * This is the only interface that allow the client to update the "primary" 1007 * MAC address of the underlying MAC. The new value must have not been 1008 * used by other clients. 1009 */ 1010 int 1011 mac_unicast_primary_set(mac_handle_t mh, const uint8_t *addr) 1012 { 1013 mac_impl_t *mip = (mac_impl_t *)mh; 1014 mac_address_t *map; 1015 int err; 1016 1017 /* verify the address validity */ 1018 if (!mac_unicst_verify(mh, addr, mip->mi_type->mt_addr_length)) 1019 return (EINVAL); 1020 1021 i_mac_perim_enter(mip); 1022 1023 /* 1024 * If the new value is the same as the current primary address value, 1025 * there's nothing to do. 1026 */ 1027 if (bcmp(addr, mip->mi_addr, mip->mi_type->mt_addr_length) == 0) { 1028 i_mac_perim_exit(mip); 1029 return (0); 1030 } 1031 1032 if (mac_find_macaddr(mip, (uint8_t *)addr) != NULL) { 1033 i_mac_perim_exit(mip); 1034 return (EBUSY); 1035 } 1036 1037 map = mac_find_macaddr(mip, mip->mi_addr); 1038 ASSERT(map != NULL); 1039 1040 /* 1041 * Update the MAC address. 1042 */ 1043 if (mip->mi_state_flags & MIS_IS_AGGR) { 1044 mac_capab_aggr_t aggr_cap; 1045 1046 /* 1047 * If the MAC is an aggregation, other than the unicast 1048 * addresses programming, aggr must be informed about this 1049 * primary unicst address change to change its MAC address 1050 * policy to be user-specified. 1051 */ 1052 ASSERT(map->ma_type == MAC_ADDRESS_TYPE_UNICAST_CLASSIFIED); 1053 VERIFY(i_mac_capab_get(mh, MAC_CAPAB_AGGR, &aggr_cap)); 1054 err = aggr_cap.mca_unicst(mip->mi_driver, addr); 1055 if (err == 0) 1056 bcopy(addr, map->ma_addr, map->ma_len); 1057 } else { 1058 err = mac_update_macaddr(map, (uint8_t *)addr); 1059 } 1060 1061 if (err != 0) { 1062 i_mac_perim_exit(mip); 1063 return (err); 1064 } 1065 1066 mac_unicast_update_clients(mip, map); 1067 1068 /* 1069 * Save the new primary MAC address in mac_impl_t. 1070 */ 1071 bcopy(addr, mip->mi_addr, mip->mi_type->mt_addr_length); 1072 1073 i_mac_perim_exit(mip); 1074 1075 if (err == 0) 1076 i_mac_notify(mip, MAC_NOTE_UNICST); 1077 1078 return (err); 1079 } 1080 1081 /* 1082 * Return the current primary MAC address of the specified MAC. 1083 */ 1084 void 1085 mac_unicast_primary_get(mac_handle_t mh, uint8_t *addr) 1086 { 1087 mac_impl_t *mip = (mac_impl_t *)mh; 1088 1089 rw_enter(&mip->mi_rw_lock, RW_READER); 1090 bcopy(mip->mi_addr, addr, mip->mi_type->mt_addr_length); 1091 rw_exit(&mip->mi_rw_lock); 1092 } 1093 1094 /* 1095 * Return the secondary MAC address for the specified handle 1096 */ 1097 void 1098 mac_unicast_secondary_get(mac_client_handle_t mh, uint8_t *addr) 1099 { 1100 mac_client_impl_t *mcip = (mac_client_impl_t *)mh; 1101 1102 ASSERT(mcip->mci_unicast != NULL); 1103 bcopy(mcip->mci_unicast->ma_addr, addr, mcip->mci_unicast->ma_len); 1104 } 1105 1106 /* 1107 * Return information about the use of the primary MAC address of the 1108 * specified MAC instance: 1109 * 1110 * - if client_name is non-NULL, it must point to a string of at 1111 * least MAXNAMELEN bytes, and will be set to the name of the MAC 1112 * client which uses the primary MAC address. 1113 * 1114 * - if in_use is non-NULL, used to return whether the primary MAC 1115 * address is currently in use. 1116 */ 1117 void 1118 mac_unicast_primary_info(mac_handle_t mh, char *client_name, boolean_t *in_use) 1119 { 1120 mac_impl_t *mip = (mac_impl_t *)mh; 1121 mac_client_impl_t *cur_client; 1122 1123 if (in_use != NULL) 1124 *in_use = B_FALSE; 1125 if (client_name != NULL) 1126 bzero(client_name, MAXNAMELEN); 1127 1128 /* 1129 * The mi_rw_lock is used to protect threads that don't hold the 1130 * mac perimeter to get a consistent view of the mi_clients_list. 1131 * Threads that modify the list must hold both the mac perimeter and 1132 * mi_rw_lock(RW_WRITER) 1133 */ 1134 rw_enter(&mip->mi_rw_lock, RW_READER); 1135 for (cur_client = mip->mi_clients_list; cur_client != NULL; 1136 cur_client = cur_client->mci_client_next) { 1137 if (mac_is_primary_client(cur_client) || 1138 (mip->mi_state_flags & MIS_IS_VNIC)) { 1139 rw_exit(&mip->mi_rw_lock); 1140 if (in_use != NULL) 1141 *in_use = B_TRUE; 1142 if (client_name != NULL) { 1143 bcopy(cur_client->mci_name, client_name, 1144 MAXNAMELEN); 1145 } 1146 return; 1147 } 1148 } 1149 rw_exit(&mip->mi_rw_lock); 1150 } 1151 1152 /* 1153 * Return the current destination MAC address of the specified MAC. 1154 */ 1155 boolean_t 1156 mac_dst_get(mac_handle_t mh, uint8_t *addr) 1157 { 1158 mac_impl_t *mip = (mac_impl_t *)mh; 1159 1160 rw_enter(&mip->mi_rw_lock, RW_READER); 1161 if (mip->mi_dstaddr_set) 1162 bcopy(mip->mi_dstaddr, addr, mip->mi_type->mt_addr_length); 1163 rw_exit(&mip->mi_rw_lock); 1164 return (mip->mi_dstaddr_set); 1165 } 1166 1167 /* 1168 * Add the specified MAC client to the list of clients which opened 1169 * the specified MAC. 1170 */ 1171 static void 1172 mac_client_add(mac_client_impl_t *mcip) 1173 { 1174 mac_impl_t *mip = mcip->mci_mip; 1175 1176 ASSERT(MAC_PERIM_HELD((mac_handle_t)mip)); 1177 1178 /* add VNIC to the front of the list */ 1179 rw_enter(&mip->mi_rw_lock, RW_WRITER); 1180 mcip->mci_client_next = mip->mi_clients_list; 1181 mip->mi_clients_list = mcip; 1182 mip->mi_nclients++; 1183 rw_exit(&mip->mi_rw_lock); 1184 } 1185 1186 /* 1187 * Remove the specified MAC client from the list of clients which opened 1188 * the specified MAC. 1189 */ 1190 static void 1191 mac_client_remove(mac_client_impl_t *mcip) 1192 { 1193 mac_impl_t *mip = mcip->mci_mip; 1194 mac_client_impl_t **prev, *cclient; 1195 1196 ASSERT(MAC_PERIM_HELD((mac_handle_t)mip)); 1197 1198 rw_enter(&mip->mi_rw_lock, RW_WRITER); 1199 prev = &mip->mi_clients_list; 1200 cclient = *prev; 1201 while (cclient != NULL && cclient != mcip) { 1202 prev = &cclient->mci_client_next; 1203 cclient = *prev; 1204 } 1205 ASSERT(cclient != NULL); 1206 *prev = cclient->mci_client_next; 1207 mip->mi_nclients--; 1208 rw_exit(&mip->mi_rw_lock); 1209 } 1210 1211 static mac_unicast_impl_t * 1212 mac_client_find_vid(mac_client_impl_t *mcip, uint16_t vid) 1213 { 1214 mac_unicast_impl_t *muip = mcip->mci_unicast_list; 1215 1216 while ((muip != NULL) && (muip->mui_vid != vid)) 1217 muip = muip->mui_next; 1218 1219 return (muip); 1220 } 1221 1222 /* 1223 * Return whether the specified (MAC address, VID) tuple is already used by 1224 * one of the MAC clients associated with the specified MAC. 1225 */ 1226 static boolean_t 1227 mac_addr_in_use(mac_impl_t *mip, uint8_t *mac_addr, uint16_t vid) 1228 { 1229 mac_client_impl_t *client; 1230 mac_address_t *map; 1231 1232 ASSERT(MAC_PERIM_HELD((mac_handle_t)mip)); 1233 1234 for (client = mip->mi_clients_list; client != NULL; 1235 client = client->mci_client_next) { 1236 1237 /* 1238 * Ignore clients that don't have unicast address. 1239 */ 1240 if (client->mci_unicast_list == NULL) 1241 continue; 1242 1243 map = client->mci_unicast; 1244 1245 if ((bcmp(mac_addr, map->ma_addr, map->ma_len) == 0) && 1246 (mac_client_find_vid(client, vid) != NULL)) { 1247 return (B_TRUE); 1248 } 1249 } 1250 1251 return (B_FALSE); 1252 } 1253 1254 /* 1255 * Generate a random MAC address. The MAC address prefix is 1256 * stored in the array pointed to by mac_addr, and its length, in bytes, 1257 * is specified by prefix_len. The least significant bits 1258 * after prefix_len bytes are generated, and stored after the prefix 1259 * in the mac_addr array. 1260 */ 1261 int 1262 mac_addr_random(mac_client_handle_t mch, uint_t prefix_len, 1263 uint8_t *mac_addr, mac_diag_t *diag) 1264 { 1265 mac_client_impl_t *mcip = (mac_client_impl_t *)mch; 1266 mac_impl_t *mip = mcip->mci_mip; 1267 size_t addr_len = mip->mi_type->mt_addr_length; 1268 1269 if (prefix_len >= addr_len) { 1270 *diag = MAC_DIAG_MACPREFIXLEN_INVALID; 1271 return (EINVAL); 1272 } 1273 1274 /* check the prefix value */ 1275 if (prefix_len > 0) { 1276 bzero(mac_addr + prefix_len, addr_len - prefix_len); 1277 if (!mac_unicst_verify((mac_handle_t)mip, mac_addr, 1278 addr_len)) { 1279 *diag = MAC_DIAG_MACPREFIX_INVALID; 1280 return (EINVAL); 1281 } 1282 } 1283 1284 /* generate the MAC address */ 1285 if (prefix_len < addr_len) { 1286 (void) random_get_pseudo_bytes(mac_addr + 1287 prefix_len, addr_len - prefix_len); 1288 } 1289 1290 *diag = MAC_DIAG_NONE; 1291 return (0); 1292 } 1293 1294 /* 1295 * Set the priority range for this MAC client. This will be used to 1296 * determine the absolute priority for the threads created for this 1297 * MAC client using the specified "low", "medium" and "high" level. 1298 * This will also be used for any subflows on this MAC client. 1299 */ 1300 #define MAC_CLIENT_SET_PRIORITY_RANGE(mcip, pri) { \ 1301 (mcip)->mci_min_pri = FLOW_MIN_PRIORITY(MINCLSYSPRI, \ 1302 MAXCLSYSPRI, (pri)); \ 1303 (mcip)->mci_max_pri = FLOW_MAX_PRIORITY(MINCLSYSPRI, \ 1304 MAXCLSYSPRI, (mcip)->mci_min_pri); \ 1305 } 1306 1307 /* 1308 * MAC client open entry point. Return a new MAC client handle. Each 1309 * MAC client is associated with a name, specified through the 'name' 1310 * argument. 1311 */ 1312 int 1313 mac_client_open(mac_handle_t mh, mac_client_handle_t *mchp, char *name, 1314 uint16_t flags) 1315 { 1316 mac_impl_t *mip = (mac_impl_t *)mh; 1317 mac_client_impl_t *mcip; 1318 int err = 0; 1319 boolean_t share_desired; 1320 flow_entry_t *flent = NULL; 1321 1322 share_desired = (flags & MAC_OPEN_FLAGS_SHARES_DESIRED) != 0; 1323 *mchp = NULL; 1324 1325 i_mac_perim_enter(mip); 1326 1327 if (mip->mi_state_flags & MIS_IS_VNIC) { 1328 /* 1329 * The underlying MAC is a VNIC. Return the MAC client 1330 * handle of the lower MAC which was obtained by 1331 * the VNIC driver when it did its mac_client_open(). 1332 */ 1333 1334 mcip = mac_vnic_lower(mip); 1335 1336 /* 1337 * Note that multiple mac clients share the same mcip in 1338 * this case. 1339 */ 1340 if (flags & MAC_OPEN_FLAGS_EXCLUSIVE) 1341 mcip->mci_state_flags |= MCIS_EXCLUSIVE; 1342 1343 if (flags & MAC_OPEN_FLAGS_MULTI_PRIMARY) 1344 mcip->mci_flags |= MAC_CLIENT_FLAGS_MULTI_PRIMARY; 1345 1346 mip->mi_clients_list = mcip; 1347 i_mac_perim_exit(mip); 1348 *mchp = (mac_client_handle_t)mcip; 1349 1350 DTRACE_PROBE2(mac__client__open__nonallocated, mac_impl_t *, 1351 mcip->mci_mip, mac_client_impl_t *, mcip); 1352 1353 return (err); 1354 } 1355 1356 mcip = kmem_cache_alloc(mac_client_impl_cache, KM_SLEEP); 1357 1358 mcip->mci_mip = mip; 1359 mcip->mci_upper_mip = NULL; 1360 mcip->mci_rx_fn = mac_pkt_drop; 1361 mcip->mci_rx_arg = NULL; 1362 mcip->mci_rx_p_fn = NULL; 1363 mcip->mci_rx_p_arg = NULL; 1364 mcip->mci_p_unicast_list = NULL; 1365 mcip->mci_direct_rx_fn = NULL; 1366 mcip->mci_direct_rx_arg = NULL; 1367 mcip->mci_vidcache = MCIP_VIDCACHE_INVALID; 1368 1369 mcip->mci_unicast_list = NULL; 1370 1371 if ((flags & MAC_OPEN_FLAGS_IS_VNIC) != 0) 1372 mcip->mci_state_flags |= MCIS_IS_VNIC; 1373 1374 if ((flags & MAC_OPEN_FLAGS_EXCLUSIVE) != 0) 1375 mcip->mci_state_flags |= MCIS_EXCLUSIVE; 1376 1377 if ((flags & MAC_OPEN_FLAGS_IS_AGGR_PORT) != 0) 1378 mcip->mci_state_flags |= MCIS_IS_AGGR_PORT; 1379 1380 if (mip->mi_state_flags & MIS_IS_AGGR) 1381 mcip->mci_state_flags |= MCIS_IS_AGGR_CLIENT; 1382 1383 if ((flags & MAC_OPEN_FLAGS_USE_DATALINK_NAME) != 0) { 1384 datalink_id_t linkid; 1385 1386 ASSERT(name == NULL); 1387 if ((err = dls_devnet_macname2linkid(mip->mi_name, 1388 &linkid)) != 0) { 1389 goto done; 1390 } 1391 if ((err = dls_mgmt_get_linkinfo(linkid, mcip->mci_name, NULL, 1392 NULL, NULL)) != 0) { 1393 /* 1394 * Use mac name if dlmgmtd is not available. 1395 */ 1396 if (err == EBADF) { 1397 (void) strlcpy(mcip->mci_name, mip->mi_name, 1398 sizeof (mcip->mci_name)); 1399 err = 0; 1400 } else { 1401 goto done; 1402 } 1403 } 1404 mcip->mci_state_flags |= MCIS_USE_DATALINK_NAME; 1405 } else { 1406 ASSERT(name != NULL); 1407 if (strlen(name) > MAXNAMELEN) { 1408 err = EINVAL; 1409 goto done; 1410 } 1411 (void) strlcpy(mcip->mci_name, name, sizeof (mcip->mci_name)); 1412 } 1413 1414 if (flags & MAC_OPEN_FLAGS_MULTI_PRIMARY) 1415 mcip->mci_flags |= MAC_CLIENT_FLAGS_MULTI_PRIMARY; 1416 1417 if (flags & MAC_OPEN_FLAGS_NO_UNICAST_ADDR) 1418 mcip->mci_state_flags |= MCIS_NO_UNICAST_ADDR; 1419 1420 mac_protect_init(mcip); 1421 1422 /* the subflow table will be created dynamically */ 1423 mcip->mci_subflow_tab = NULL; 1424 1425 mcip->mci_misc_stat.mms_multircv = 0; 1426 mcip->mci_misc_stat.mms_brdcstrcv = 0; 1427 mcip->mci_misc_stat.mms_multixmt = 0; 1428 mcip->mci_misc_stat.mms_brdcstxmt = 0; 1429 1430 /* Create an initial flow */ 1431 1432 err = mac_flow_create(NULL, NULL, mcip->mci_name, NULL, 1433 mcip->mci_state_flags & MCIS_IS_VNIC ? FLOW_VNIC_MAC : 1434 FLOW_PRIMARY_MAC, &flent); 1435 if (err != 0) 1436 goto done; 1437 mcip->mci_flent = flent; 1438 FLOW_MARK(flent, FE_MC_NO_DATAPATH); 1439 flent->fe_mcip = mcip; 1440 1441 /* 1442 * Place initial creation reference on the flow. This reference 1443 * is released in the corresponding delete action viz. 1444 * mac_unicast_remove after waiting for all transient refs to 1445 * to go away. The wait happens in mac_flow_wait. 1446 */ 1447 FLOW_REFHOLD(flent); 1448 1449 /* 1450 * Do this ahead of the mac_bcast_add() below so that the mi_nclients 1451 * will have the right value for mac_rx_srs_setup(). 1452 */ 1453 mac_client_add(mcip); 1454 1455 mcip->mci_share = 0; 1456 if (share_desired) 1457 i_mac_share_alloc(mcip); 1458 1459 /* 1460 * We will do mimimal datapath setup to allow a MAC client to 1461 * transmit or receive non-unicast packets without waiting 1462 * for mac_unicast_add. 1463 */ 1464 if (mcip->mci_state_flags & MCIS_NO_UNICAST_ADDR) { 1465 if ((err = mac_client_datapath_setup(mcip, VLAN_ID_NONE, 1466 NULL, NULL, B_TRUE, NULL)) != 0) { 1467 goto done; 1468 } 1469 } 1470 1471 DTRACE_PROBE2(mac__client__open__allocated, mac_impl_t *, 1472 mcip->mci_mip, mac_client_impl_t *, mcip); 1473 1474 *mchp = (mac_client_handle_t)mcip; 1475 i_mac_perim_exit(mip); 1476 return (0); 1477 1478 done: 1479 i_mac_perim_exit(mip); 1480 mcip->mci_state_flags = 0; 1481 mcip->mci_tx_flag = 0; 1482 kmem_cache_free(mac_client_impl_cache, mcip); 1483 return (err); 1484 } 1485 1486 /* 1487 * Close the specified MAC client handle. 1488 */ 1489 void 1490 mac_client_close(mac_client_handle_t mch, uint16_t flags) 1491 { 1492 mac_client_impl_t *mcip = (mac_client_impl_t *)mch; 1493 mac_impl_t *mip = mcip->mci_mip; 1494 flow_entry_t *flent; 1495 1496 i_mac_perim_enter(mip); 1497 1498 if (flags & MAC_CLOSE_FLAGS_EXCLUSIVE) 1499 mcip->mci_state_flags &= ~MCIS_EXCLUSIVE; 1500 1501 if ((mcip->mci_state_flags & MCIS_IS_VNIC) && 1502 !(flags & MAC_CLOSE_FLAGS_IS_VNIC)) { 1503 /* 1504 * This is an upper VNIC client initiated operation. 1505 * The lower MAC client will be closed by the VNIC driver 1506 * when the VNIC is deleted. 1507 */ 1508 1509 i_mac_perim_exit(mip); 1510 return; 1511 } 1512 1513 /* If we have only setup up minimal datapth setup, tear it down */ 1514 if (mcip->mci_state_flags & MCIS_NO_UNICAST_ADDR) { 1515 mac_client_datapath_teardown((mac_client_handle_t)mcip, NULL, 1516 mcip->mci_flent); 1517 mcip->mci_state_flags &= ~MCIS_NO_UNICAST_ADDR; 1518 } 1519 1520 /* 1521 * Remove the flent associated with the MAC client 1522 */ 1523 flent = mcip->mci_flent; 1524 mcip->mci_flent = NULL; 1525 FLOW_FINAL_REFRELE(flent); 1526 1527 /* 1528 * MAC clients must remove the unicast addresses and promisc callbacks 1529 * they added before issuing a mac_client_close(). 1530 */ 1531 ASSERT(mcip->mci_unicast_list == NULL); 1532 ASSERT(mcip->mci_promisc_list == NULL); 1533 ASSERT(mcip->mci_tx_notify_cb_list == NULL); 1534 1535 i_mac_share_free(mcip); 1536 mac_protect_fini(mcip); 1537 mac_client_remove(mcip); 1538 1539 i_mac_perim_exit(mip); 1540 mcip->mci_subflow_tab = NULL; 1541 mcip->mci_state_flags = 0; 1542 mcip->mci_tx_flag = 0; 1543 kmem_cache_free(mac_client_impl_cache, mch); 1544 } 1545 1546 /* 1547 * Set the Rx bypass receive callback and return B_TRUE. Return 1548 * B_FALSE if it's not possible to enable bypass. 1549 */ 1550 boolean_t 1551 mac_rx_bypass_set(mac_client_handle_t mch, mac_direct_rx_t rx_fn, void *arg1) 1552 { 1553 mac_client_impl_t *mcip = (mac_client_impl_t *)mch; 1554 mac_impl_t *mip = mcip->mci_mip; 1555 1556 ASSERT(MAC_PERIM_HELD((mac_handle_t)mip)); 1557 1558 /* 1559 * If the client has more than one VLAN then process packets 1560 * through DLS. This should happen only when sun4v vsw is on 1561 * the scene. 1562 */ 1563 if (mcip->mci_nvids > 1) 1564 return (B_FALSE); 1565 1566 /* 1567 * These are not accessed directly in the data path, and hence 1568 * don't need any protection 1569 */ 1570 mcip->mci_direct_rx_fn = rx_fn; 1571 mcip->mci_direct_rx_arg = arg1; 1572 return (B_TRUE); 1573 } 1574 1575 /* 1576 * Enable/Disable rx bypass. By default, bypass is assumed to be enabled. 1577 */ 1578 void 1579 mac_rx_bypass_enable(mac_client_handle_t mch) 1580 { 1581 ((mac_client_impl_t *)mch)->mci_state_flags &= ~MCIS_RX_BYPASS_DISABLE; 1582 } 1583 1584 void 1585 mac_rx_bypass_disable(mac_client_handle_t mch) 1586 { 1587 ((mac_client_impl_t *)mch)->mci_state_flags |= MCIS_RX_BYPASS_DISABLE; 1588 } 1589 1590 /* 1591 * Set the receive callback for the specified MAC client. There can be 1592 * at most one such callback per MAC client. 1593 */ 1594 void 1595 mac_rx_set(mac_client_handle_t mch, mac_rx_t rx_fn, void *arg) 1596 { 1597 mac_client_impl_t *mcip = (mac_client_impl_t *)mch; 1598 mac_impl_t *mip = mcip->mci_mip; 1599 mac_impl_t *umip = mcip->mci_upper_mip; 1600 1601 /* 1602 * Instead of adding an extra set of locks and refcnts in 1603 * the datapath at the mac client boundary, we temporarily quiesce 1604 * the SRS and related entities. We then change the receive function 1605 * without interference from any receive data thread and then reenable 1606 * the data flow subsequently. 1607 */ 1608 i_mac_perim_enter(mip); 1609 mac_rx_client_quiesce(mch); 1610 1611 mcip->mci_rx_fn = rx_fn; 1612 mcip->mci_rx_arg = arg; 1613 mac_rx_client_restart(mch); 1614 i_mac_perim_exit(mip); 1615 1616 /* 1617 * If we're changing the Rx function on the primary MAC of a VNIC, 1618 * make sure any secondary addresses on the VNIC are updated as well. 1619 */ 1620 if (umip != NULL) { 1621 ASSERT((umip->mi_state_flags & MIS_IS_VNIC) != 0); 1622 mac_vnic_secondary_update(umip); 1623 } 1624 } 1625 1626 /* 1627 * Reset the receive callback for the specified MAC client. 1628 */ 1629 void 1630 mac_rx_clear(mac_client_handle_t mch) 1631 { 1632 mac_rx_set(mch, mac_pkt_drop, NULL); 1633 } 1634 1635 void 1636 mac_rx_barrier(mac_client_handle_t mch) 1637 { 1638 mac_client_impl_t *mcip = (mac_client_impl_t *)mch; 1639 mac_impl_t *mip = mcip->mci_mip; 1640 1641 i_mac_perim_enter(mip); 1642 1643 /* If a RX callback is set, quiesce and restart that datapath */ 1644 if (mcip->mci_rx_fn != mac_pkt_drop) { 1645 mac_rx_client_quiesce(mch); 1646 mac_rx_client_restart(mch); 1647 } 1648 1649 /* If any promisc callbacks are registered, perform a barrier there */ 1650 if (mcip->mci_promisc_list != NULL || mip->mi_promisc_list != NULL) { 1651 mac_cb_info_t *mcbi = &mip->mi_promisc_cb_info; 1652 1653 mutex_enter(mcbi->mcbi_lockp); 1654 mac_callback_barrier(mcbi); 1655 mutex_exit(mcbi->mcbi_lockp); 1656 } 1657 1658 i_mac_perim_exit(mip); 1659 } 1660 1661 void 1662 mac_secondary_dup(mac_client_handle_t smch, mac_client_handle_t dmch) 1663 { 1664 mac_client_impl_t *smcip = (mac_client_impl_t *)smch; 1665 mac_client_impl_t *dmcip = (mac_client_impl_t *)dmch; 1666 flow_entry_t *flent = dmcip->mci_flent; 1667 1668 /* This should only be called to setup secondary macs */ 1669 ASSERT((flent->fe_type & FLOW_PRIMARY_MAC) == 0); 1670 1671 mac_rx_set(dmch, smcip->mci_rx_fn, smcip->mci_rx_arg); 1672 dmcip->mci_promisc_list = smcip->mci_promisc_list; 1673 1674 /* 1675 * Duplicate the primary mac resources to the secondary. 1676 * Since we already validated the resource controls when setting 1677 * them on the primary, we can ignore errors here. 1678 */ 1679 (void) mac_resource_ctl_set(dmch, MCIP_RESOURCE_PROPS(smcip)); 1680 } 1681 1682 /* 1683 * Called when removing a secondary MAC. Currently only clears the promisc_list 1684 * since we share the primary mac's promisc_list. 1685 */ 1686 void 1687 mac_secondary_cleanup(mac_client_handle_t mch) 1688 { 1689 mac_client_impl_t *mcip = (mac_client_impl_t *)mch; 1690 flow_entry_t *flent = mcip->mci_flent; 1691 1692 /* This should only be called for secondary macs */ 1693 ASSERT((flent->fe_type & FLOW_PRIMARY_MAC) == 0); 1694 mcip->mci_promisc_list = NULL; 1695 } 1696 1697 /* 1698 * Walk the MAC client subflow table and updates their priority values. 1699 */ 1700 static int 1701 mac_update_subflow_priority_cb(flow_entry_t *flent, void *arg) 1702 { 1703 mac_flow_update_priority(arg, flent); 1704 return (0); 1705 } 1706 1707 void 1708 mac_update_subflow_priority(mac_client_impl_t *mcip) 1709 { 1710 (void) mac_flow_walk(mcip->mci_subflow_tab, 1711 mac_update_subflow_priority_cb, mcip); 1712 } 1713 1714 /* 1715 * Modify the TX or RX ring properties. We could either just move around 1716 * rings, i.e add/remove rings given to a client. Or this might cause the 1717 * client to move from hardware based to software or the other way around. 1718 * If we want to reset this property, then we clear the mask, additionally 1719 * if the client was given a non-default group we remove all rings except 1720 * for 1 and give it back to the default group. 1721 */ 1722 int 1723 mac_client_set_rings_prop(mac_client_impl_t *mcip, mac_resource_props_t *mrp, 1724 mac_resource_props_t *tmrp) 1725 { 1726 mac_impl_t *mip = mcip->mci_mip; 1727 flow_entry_t *flent = mcip->mci_flent; 1728 uint8_t *mac_addr; 1729 int err = 0; 1730 mac_group_t *defgrp; 1731 mac_group_t *group; 1732 mac_group_t *ngrp; 1733 mac_resource_props_t *cmrp = MCIP_RESOURCE_PROPS(mcip); 1734 uint_t ringcnt; 1735 boolean_t unspec; 1736 1737 if (mcip->mci_share != 0) 1738 return (EINVAL); 1739 1740 if (mrp->mrp_mask & MRP_RX_RINGS) { 1741 unspec = mrp->mrp_mask & MRP_RXRINGS_UNSPEC; 1742 group = flent->fe_rx_ring_group; 1743 defgrp = MAC_DEFAULT_RX_GROUP(mip); 1744 mac_addr = flent->fe_flow_desc.fd_dst_mac; 1745 1746 /* 1747 * No resulting change. If we are resetting on a client on 1748 * which there was no rx rings property. For dynamic group 1749 * if we are setting the same number of rings already set. 1750 * For static group if we are requesting a group again. 1751 */ 1752 if (mrp->mrp_mask & MRP_RINGS_RESET) { 1753 if (!(tmrp->mrp_mask & MRP_RX_RINGS)) 1754 return (0); 1755 } else { 1756 if (unspec) { 1757 if (tmrp->mrp_mask & MRP_RXRINGS_UNSPEC) 1758 return (0); 1759 } else if (mip->mi_rx_group_type == 1760 MAC_GROUP_TYPE_DYNAMIC) { 1761 if ((tmrp->mrp_mask & MRP_RX_RINGS) && 1762 !(tmrp->mrp_mask & MRP_RXRINGS_UNSPEC) && 1763 mrp->mrp_nrxrings == tmrp->mrp_nrxrings) { 1764 return (0); 1765 } 1766 } 1767 } 1768 /* Resetting the prop */ 1769 if (mrp->mrp_mask & MRP_RINGS_RESET) { 1770 /* 1771 * We will just keep one ring and give others back if 1772 * we are not the primary. For the primary we give 1773 * all the rings in the default group except the 1774 * default ring. If it is a static group, then 1775 * we don't do anything, but clear the MRP_RX_RINGS 1776 * flag. 1777 */ 1778 if (group != defgrp) { 1779 if (mip->mi_rx_group_type == 1780 MAC_GROUP_TYPE_DYNAMIC) { 1781 /* 1782 * This group has reserved rings 1783 * that need to be released now, 1784 * so does the group. 1785 */ 1786 MAC_RX_RING_RELEASED(mip, 1787 group->mrg_cur_count); 1788 MAC_RX_GRP_RELEASED(mip); 1789 if ((flent->fe_type & 1790 FLOW_PRIMARY_MAC) != 0) { 1791 if (mip->mi_nactiveclients == 1792 1) { 1793 (void) 1794 mac_rx_switch_group( 1795 mcip, group, 1796 defgrp); 1797 return (0); 1798 } else { 1799 cmrp->mrp_nrxrings = 1800 group-> 1801 mrg_cur_count + 1802 defgrp-> 1803 mrg_cur_count - 1; 1804 } 1805 } else { 1806 cmrp->mrp_nrxrings = 1; 1807 } 1808 (void) mac_group_ring_modify(mcip, 1809 group, defgrp); 1810 } else { 1811 /* 1812 * If this is a static group, we 1813 * need to release the group. The 1814 * client will remain in the same 1815 * group till some other client 1816 * needs this group. 1817 */ 1818 MAC_RX_GRP_RELEASED(mip); 1819 } 1820 /* Let check if we can give this an excl group */ 1821 } else if (group == defgrp) { 1822 /* 1823 * If multiple clients share an 1824 * address then they must stay on the 1825 * default group. 1826 */ 1827 if (mac_check_macaddr_shared(mcip->mci_unicast)) 1828 return (0); 1829 1830 ngrp = mac_reserve_rx_group(mcip, mac_addr, 1831 B_TRUE); 1832 /* Couldn't give it a group, that's fine */ 1833 if (ngrp == NULL) 1834 return (0); 1835 /* Switch to H/W */ 1836 if (mac_rx_switch_group(mcip, defgrp, ngrp) != 1837 0) { 1838 mac_stop_group(ngrp); 1839 return (0); 1840 } 1841 } 1842 /* 1843 * If the client is in the default group, we will 1844 * just clear the MRP_RX_RINGS and leave it as 1845 * it rather than look for an exclusive group 1846 * for it. 1847 */ 1848 return (0); 1849 } 1850 1851 if (group == defgrp && ((mrp->mrp_nrxrings > 0) || unspec)) { 1852 /* 1853 * We are requesting Rx rings. Try to reserve 1854 * a non-default group. 1855 * 1856 * If multiple clients share an address then 1857 * they must stay on the default group. 1858 */ 1859 if (mac_check_macaddr_shared(mcip->mci_unicast)) 1860 return (EINVAL); 1861 1862 ngrp = mac_reserve_rx_group(mcip, mac_addr, B_TRUE); 1863 if (ngrp == NULL) 1864 return (ENOSPC); 1865 1866 /* Switch to H/W */ 1867 if (mac_rx_switch_group(mcip, defgrp, ngrp) != 0) { 1868 mac_release_rx_group(mcip, ngrp); 1869 return (ENOSPC); 1870 } 1871 MAC_RX_GRP_RESERVED(mip); 1872 if (mip->mi_rx_group_type == MAC_GROUP_TYPE_DYNAMIC) 1873 MAC_RX_RING_RESERVED(mip, ngrp->mrg_cur_count); 1874 } else if (group != defgrp && !unspec && 1875 mrp->mrp_nrxrings == 0) { 1876 /* Switch to S/W */ 1877 ringcnt = group->mrg_cur_count; 1878 if (mac_rx_switch_group(mcip, group, defgrp) != 0) 1879 return (ENOSPC); 1880 if (tmrp->mrp_mask & MRP_RX_RINGS) { 1881 MAC_RX_GRP_RELEASED(mip); 1882 if (mip->mi_rx_group_type == 1883 MAC_GROUP_TYPE_DYNAMIC) { 1884 MAC_RX_RING_RELEASED(mip, ringcnt); 1885 } 1886 } 1887 } else if (group != defgrp && mip->mi_rx_group_type == 1888 MAC_GROUP_TYPE_DYNAMIC) { 1889 ringcnt = group->mrg_cur_count; 1890 err = mac_group_ring_modify(mcip, group, defgrp); 1891 if (err != 0) 1892 return (err); 1893 /* 1894 * Update the accounting. If this group 1895 * already had explicitly reserved rings, 1896 * we need to update the rings based on 1897 * the new ring count. If this group 1898 * had not explicitly reserved rings, 1899 * then we just reserve the rings asked for 1900 * and reserve the group. 1901 */ 1902 if (tmrp->mrp_mask & MRP_RX_RINGS) { 1903 if (ringcnt > group->mrg_cur_count) { 1904 MAC_RX_RING_RELEASED(mip, 1905 ringcnt - group->mrg_cur_count); 1906 } else { 1907 MAC_RX_RING_RESERVED(mip, 1908 group->mrg_cur_count - ringcnt); 1909 } 1910 } else { 1911 MAC_RX_RING_RESERVED(mip, group->mrg_cur_count); 1912 MAC_RX_GRP_RESERVED(mip); 1913 } 1914 } 1915 } 1916 if (mrp->mrp_mask & MRP_TX_RINGS) { 1917 unspec = mrp->mrp_mask & MRP_TXRINGS_UNSPEC; 1918 group = flent->fe_tx_ring_group; 1919 defgrp = MAC_DEFAULT_TX_GROUP(mip); 1920 1921 /* 1922 * For static groups we only allow rings=0 or resetting the 1923 * rings property. 1924 */ 1925 if (mrp->mrp_ntxrings > 0 && 1926 mip->mi_tx_group_type != MAC_GROUP_TYPE_DYNAMIC) { 1927 return (ENOTSUP); 1928 } 1929 if (mrp->mrp_mask & MRP_RINGS_RESET) { 1930 if (!(tmrp->mrp_mask & MRP_TX_RINGS)) 1931 return (0); 1932 } else { 1933 if (unspec) { 1934 if (tmrp->mrp_mask & MRP_TXRINGS_UNSPEC) 1935 return (0); 1936 } else if (mip->mi_tx_group_type == 1937 MAC_GROUP_TYPE_DYNAMIC) { 1938 if ((tmrp->mrp_mask & MRP_TX_RINGS) && 1939 !(tmrp->mrp_mask & MRP_TXRINGS_UNSPEC) && 1940 mrp->mrp_ntxrings == tmrp->mrp_ntxrings) { 1941 return (0); 1942 } 1943 } 1944 } 1945 /* Resetting the prop */ 1946 if (mrp->mrp_mask & MRP_RINGS_RESET) { 1947 if (group != defgrp) { 1948 if (mip->mi_tx_group_type == 1949 MAC_GROUP_TYPE_DYNAMIC) { 1950 ringcnt = group->mrg_cur_count; 1951 if ((flent->fe_type & 1952 FLOW_PRIMARY_MAC) != 0) { 1953 mac_tx_client_quiesce( 1954 (mac_client_handle_t) 1955 mcip); 1956 mac_tx_switch_group(mcip, 1957 group, defgrp); 1958 mac_tx_client_restart( 1959 (mac_client_handle_t) 1960 mcip); 1961 MAC_TX_GRP_RELEASED(mip); 1962 MAC_TX_RING_RELEASED(mip, 1963 ringcnt); 1964 return (0); 1965 } 1966 cmrp->mrp_ntxrings = 1; 1967 (void) mac_group_ring_modify(mcip, 1968 group, defgrp); 1969 /* 1970 * This group has reserved rings 1971 * that need to be released now. 1972 */ 1973 MAC_TX_RING_RELEASED(mip, ringcnt); 1974 } 1975 /* 1976 * If this is a static group, we 1977 * need to release the group. The 1978 * client will remain in the same 1979 * group till some other client 1980 * needs this group. 1981 */ 1982 MAC_TX_GRP_RELEASED(mip); 1983 } else if (group == defgrp && 1984 (flent->fe_type & FLOW_PRIMARY_MAC) == 0) { 1985 ngrp = mac_reserve_tx_group(mcip, B_TRUE); 1986 if (ngrp == NULL) 1987 return (0); 1988 mac_tx_client_quiesce( 1989 (mac_client_handle_t)mcip); 1990 mac_tx_switch_group(mcip, defgrp, ngrp); 1991 mac_tx_client_restart( 1992 (mac_client_handle_t)mcip); 1993 } 1994 /* 1995 * If the client is in the default group, we will 1996 * just clear the MRP_TX_RINGS and leave it as 1997 * it rather than look for an exclusive group 1998 * for it. 1999 */ 2000 return (0); 2001 } 2002 2003 /* Switch to H/W */ 2004 if (group == defgrp && ((mrp->mrp_ntxrings > 0) || unspec)) { 2005 ngrp = mac_reserve_tx_group(mcip, B_TRUE); 2006 if (ngrp == NULL) 2007 return (ENOSPC); 2008 mac_tx_client_quiesce((mac_client_handle_t)mcip); 2009 mac_tx_switch_group(mcip, defgrp, ngrp); 2010 mac_tx_client_restart((mac_client_handle_t)mcip); 2011 MAC_TX_GRP_RESERVED(mip); 2012 if (mip->mi_tx_group_type == MAC_GROUP_TYPE_DYNAMIC) 2013 MAC_TX_RING_RESERVED(mip, ngrp->mrg_cur_count); 2014 /* Switch to S/W */ 2015 } else if (group != defgrp && !unspec && 2016 mrp->mrp_ntxrings == 0) { 2017 /* Switch to S/W */ 2018 ringcnt = group->mrg_cur_count; 2019 mac_tx_client_quiesce((mac_client_handle_t)mcip); 2020 mac_tx_switch_group(mcip, group, defgrp); 2021 mac_tx_client_restart((mac_client_handle_t)mcip); 2022 if (tmrp->mrp_mask & MRP_TX_RINGS) { 2023 MAC_TX_GRP_RELEASED(mip); 2024 if (mip->mi_tx_group_type == 2025 MAC_GROUP_TYPE_DYNAMIC) { 2026 MAC_TX_RING_RELEASED(mip, ringcnt); 2027 } 2028 } 2029 } else if (group != defgrp && mip->mi_tx_group_type == 2030 MAC_GROUP_TYPE_DYNAMIC) { 2031 ringcnt = group->mrg_cur_count; 2032 err = mac_group_ring_modify(mcip, group, defgrp); 2033 if (err != 0) 2034 return (err); 2035 /* 2036 * Update the accounting. If this group 2037 * already had explicitly reserved rings, 2038 * we need to update the rings based on 2039 * the new ring count. If this group 2040 * had not explicitly reserved rings, 2041 * then we just reserve the rings asked for 2042 * and reserve the group. 2043 */ 2044 if (tmrp->mrp_mask & MRP_TX_RINGS) { 2045 if (ringcnt > group->mrg_cur_count) { 2046 MAC_TX_RING_RELEASED(mip, 2047 ringcnt - group->mrg_cur_count); 2048 } else { 2049 MAC_TX_RING_RESERVED(mip, 2050 group->mrg_cur_count - ringcnt); 2051 } 2052 } else { 2053 MAC_TX_RING_RESERVED(mip, group->mrg_cur_count); 2054 MAC_TX_GRP_RESERVED(mip); 2055 } 2056 } 2057 } 2058 return (0); 2059 } 2060 2061 /* 2062 * When the MAC client is being brought up (i.e. we do a unicast_add) we need 2063 * to initialize the cpu and resource control structure in the 2064 * mac_client_impl_t from the mac_impl_t (i.e if there are any cached 2065 * properties before the flow entry for the unicast address was created). 2066 */ 2067 static int 2068 mac_resource_ctl_set(mac_client_handle_t mch, mac_resource_props_t *mrp) 2069 { 2070 mac_client_impl_t *mcip = (mac_client_impl_t *)mch; 2071 mac_impl_t *mip = (mac_impl_t *)mcip->mci_mip; 2072 mac_impl_t *umip = mcip->mci_upper_mip; 2073 int err = 0; 2074 flow_entry_t *flent = mcip->mci_flent; 2075 mac_resource_props_t *omrp, *nmrp = MCIP_RESOURCE_PROPS(mcip); 2076 2077 ASSERT(MAC_PERIM_HELD((mac_handle_t)mip)); 2078 2079 err = mac_validate_props(mcip->mci_state_flags & MCIS_IS_VNIC ? 2080 mcip->mci_upper_mip : mip, mrp); 2081 if (err != 0) 2082 return (err); 2083 2084 /* 2085 * Copy over the existing properties since mac_update_resources 2086 * will modify the client's mrp. Currently, the saved property 2087 * is used to determine the difference between existing and 2088 * modified rings property. 2089 */ 2090 omrp = kmem_zalloc(sizeof (*omrp), KM_SLEEP); 2091 bcopy(nmrp, omrp, sizeof (*omrp)); 2092 mac_update_resources(mrp, MCIP_RESOURCE_PROPS(mcip), B_FALSE); 2093 if (MCIP_DATAPATH_SETUP(mcip)) { 2094 /* 2095 * We support rings only for primary client when there are 2096 * multiple clients sharing the same MAC address (e.g. VLAN). 2097 */ 2098 if (mrp->mrp_mask & MRP_RX_RINGS || 2099 mrp->mrp_mask & MRP_TX_RINGS) { 2100 2101 if ((err = mac_client_set_rings_prop(mcip, mrp, 2102 omrp)) != 0) { 2103 if (omrp->mrp_mask & MRP_RX_RINGS) { 2104 nmrp->mrp_mask |= MRP_RX_RINGS; 2105 nmrp->mrp_nrxrings = omrp->mrp_nrxrings; 2106 } else { 2107 nmrp->mrp_mask &= ~MRP_RX_RINGS; 2108 nmrp->mrp_nrxrings = 0; 2109 } 2110 if (omrp->mrp_mask & MRP_TX_RINGS) { 2111 nmrp->mrp_mask |= MRP_TX_RINGS; 2112 nmrp->mrp_ntxrings = omrp->mrp_ntxrings; 2113 } else { 2114 nmrp->mrp_mask &= ~MRP_TX_RINGS; 2115 nmrp->mrp_ntxrings = 0; 2116 } 2117 if (omrp->mrp_mask & MRP_RXRINGS_UNSPEC) 2118 omrp->mrp_mask |= MRP_RXRINGS_UNSPEC; 2119 else 2120 omrp->mrp_mask &= ~MRP_RXRINGS_UNSPEC; 2121 2122 if (omrp->mrp_mask & MRP_TXRINGS_UNSPEC) 2123 omrp->mrp_mask |= MRP_TXRINGS_UNSPEC; 2124 else 2125 omrp->mrp_mask &= ~MRP_TXRINGS_UNSPEC; 2126 kmem_free(omrp, sizeof (*omrp)); 2127 return (err); 2128 } 2129 2130 /* 2131 * If we modified the rings property of the primary 2132 * we need to update the property fields of its 2133 * VLANs as they inherit the primary's properites. 2134 */ 2135 if (mac_is_primary_client(mcip)) { 2136 mac_set_prim_vlan_rings(mip, 2137 MCIP_RESOURCE_PROPS(mcip)); 2138 } 2139 } 2140 /* 2141 * We have to set this prior to calling mac_flow_modify. 2142 */ 2143 if (mrp->mrp_mask & MRP_PRIORITY) { 2144 if (mrp->mrp_priority == MPL_RESET) { 2145 MAC_CLIENT_SET_PRIORITY_RANGE(mcip, 2146 MPL_LINK_DEFAULT); 2147 } else { 2148 MAC_CLIENT_SET_PRIORITY_RANGE(mcip, 2149 mrp->mrp_priority); 2150 } 2151 } 2152 2153 mac_flow_modify(mip->mi_flow_tab, flent, mrp); 2154 if (mrp->mrp_mask & MRP_PRIORITY) 2155 mac_update_subflow_priority(mcip); 2156 2157 /* Apply these resource settings to any secondary macs */ 2158 if (umip != NULL) { 2159 ASSERT((umip->mi_state_flags & MIS_IS_VNIC) != 0); 2160 mac_vnic_secondary_update(umip); 2161 } 2162 } 2163 kmem_free(omrp, sizeof (*omrp)); 2164 return (0); 2165 } 2166 2167 static int 2168 mac_unicast_flow_create(mac_client_impl_t *mcip, uint8_t *mac_addr, 2169 uint16_t vid, boolean_t is_primary, boolean_t first_flow, 2170 flow_entry_t **flent, mac_resource_props_t *mrp) 2171 { 2172 mac_impl_t *mip = (mac_impl_t *)mcip->mci_mip; 2173 flow_desc_t flow_desc; 2174 char flowname[MAXFLOWNAMELEN]; 2175 int err; 2176 uint_t flent_flags; 2177 2178 /* 2179 * First unicast address being added, create a new flow 2180 * for that MAC client. 2181 */ 2182 bzero(&flow_desc, sizeof (flow_desc)); 2183 2184 ASSERT(mac_addr != NULL || 2185 (mcip->mci_state_flags & MCIS_NO_UNICAST_ADDR)); 2186 if (mac_addr != NULL) { 2187 flow_desc.fd_mac_len = mip->mi_type->mt_addr_length; 2188 bcopy(mac_addr, flow_desc.fd_dst_mac, flow_desc.fd_mac_len); 2189 } 2190 flow_desc.fd_mask = FLOW_LINK_DST; 2191 if (vid != 0) { 2192 flow_desc.fd_vid = vid; 2193 flow_desc.fd_mask |= FLOW_LINK_VID; 2194 } 2195 2196 /* 2197 * XXX-nicolas. For now I'm keeping the FLOW_PRIMARY_MAC 2198 * and FLOW_VNIC. Even though they're a hack inherited 2199 * from the SRS code, we'll keep them for now. They're currently 2200 * consumed by mac_datapath_setup() to create the SRS. 2201 * That code should be eventually moved out of 2202 * mac_datapath_setup() and moved to a mac_srs_create() 2203 * function of some sort to keep things clean. 2204 * 2205 * Also, there's no reason why the SRS for the primary MAC 2206 * client should be different than any other MAC client. Until 2207 * this is cleaned-up, we support only one MAC unicast address 2208 * per client. 2209 * 2210 * We set FLOW_PRIMARY_MAC for the primary MAC address, 2211 * FLOW_VNIC for everything else. 2212 */ 2213 if (is_primary) 2214 flent_flags = FLOW_PRIMARY_MAC; 2215 else 2216 flent_flags = FLOW_VNIC_MAC; 2217 2218 /* 2219 * For the first flow we use the MAC client's name - mci_name, for 2220 * subsequent ones we just create a name with the VID. This is 2221 * so that we can add these flows to the same flow table. This is 2222 * fine as the flow name (except for the one with the MAC client's 2223 * name) is not visible. When the first flow is removed, we just replace 2224 * its fdesc with another from the list, so we will still retain the 2225 * flent with the MAC client's flow name. 2226 */ 2227 if (first_flow) { 2228 bcopy(mcip->mci_name, flowname, MAXFLOWNAMELEN); 2229 } else { 2230 (void) sprintf(flowname, "%s%u", mcip->mci_name, vid); 2231 flent_flags = FLOW_NO_STATS; 2232 } 2233 2234 if ((err = mac_flow_create(&flow_desc, mrp, flowname, NULL, 2235 flent_flags, flent)) != 0) 2236 return (err); 2237 2238 mac_misc_stat_create(*flent); 2239 FLOW_MARK(*flent, FE_INCIPIENT); 2240 (*flent)->fe_mcip = mcip; 2241 2242 /* 2243 * Place initial creation reference on the flow. This reference 2244 * is released in the corresponding delete action viz. 2245 * mac_unicast_remove after waiting for all transient refs to 2246 * to go away. The wait happens in mac_flow_wait. 2247 * We have already held the reference in mac_client_open(). 2248 */ 2249 if (!first_flow) 2250 FLOW_REFHOLD(*flent); 2251 return (0); 2252 } 2253 2254 /* Refresh the multicast grouping for this VID. */ 2255 int 2256 mac_client_update_mcast(void *arg, boolean_t add, const uint8_t *addrp) 2257 { 2258 flow_entry_t *flent = arg; 2259 mac_client_impl_t *mcip = flent->fe_mcip; 2260 uint16_t vid; 2261 flow_desc_t flow_desc; 2262 2263 mac_flow_get_desc(flent, &flow_desc); 2264 vid = (flow_desc.fd_mask & FLOW_LINK_VID) != 0 ? 2265 flow_desc.fd_vid : VLAN_ID_NONE; 2266 2267 /* 2268 * We don't call mac_multicast_add()/mac_multicast_remove() as 2269 * we want to add/remove for this specific vid. 2270 */ 2271 if (add) { 2272 return (mac_bcast_add(mcip, addrp, vid, 2273 MAC_ADDRTYPE_MULTICAST)); 2274 } else { 2275 mac_bcast_delete(mcip, addrp, vid); 2276 return (0); 2277 } 2278 } 2279 2280 static void 2281 mac_update_single_active_client(mac_impl_t *mip) 2282 { 2283 mac_client_impl_t *client = NULL; 2284 2285 ASSERT(MAC_PERIM_HELD((mac_handle_t)mip)); 2286 2287 rw_enter(&mip->mi_rw_lock, RW_WRITER); 2288 if (mip->mi_nactiveclients == 1) { 2289 /* 2290 * Find the one active MAC client from the list of MAC 2291 * clients. The active MAC client has at least one 2292 * unicast address. 2293 */ 2294 for (client = mip->mi_clients_list; client != NULL; 2295 client = client->mci_client_next) { 2296 if (client->mci_unicast_list != NULL) 2297 break; 2298 } 2299 ASSERT(client != NULL); 2300 } 2301 2302 /* 2303 * mi_single_active_client is protected by the MAC impl's read/writer 2304 * lock, which allows mac_rx() to check the value of that pointer 2305 * as a reader. 2306 */ 2307 mip->mi_single_active_client = client; 2308 rw_exit(&mip->mi_rw_lock); 2309 } 2310 2311 /* 2312 * Set up the data path. Called from i_mac_unicast_add after having 2313 * done all the validations including making sure this is an active 2314 * client (i.e that is ready to process packets.) 2315 */ 2316 static int 2317 mac_client_datapath_setup(mac_client_impl_t *mcip, uint16_t vid, 2318 uint8_t *mac_addr, mac_resource_props_t *mrp, boolean_t isprimary, 2319 mac_unicast_impl_t *muip) 2320 { 2321 mac_impl_t *mip = mcip->mci_mip; 2322 boolean_t mac_started = B_FALSE; 2323 boolean_t bcast_added = B_FALSE; 2324 boolean_t nactiveclients_added = B_FALSE; 2325 flow_entry_t *flent; 2326 int err = 0; 2327 boolean_t no_unicast; 2328 2329 no_unicast = mcip->mci_state_flags & MCIS_NO_UNICAST_ADDR; 2330 2331 if ((err = mac_start((mac_handle_t)mip)) != 0) 2332 goto bail; 2333 2334 mac_started = B_TRUE; 2335 2336 /* add the MAC client to the broadcast address group by default */ 2337 if (mip->mi_type->mt_brdcst_addr != NULL) { 2338 err = mac_bcast_add(mcip, mip->mi_type->mt_brdcst_addr, vid, 2339 MAC_ADDRTYPE_BROADCAST); 2340 if (err != 0) 2341 goto bail; 2342 bcast_added = B_TRUE; 2343 } 2344 2345 /* 2346 * If this is the first unicast address addition for this 2347 * client, reuse the pre-allocated larval flow entry associated with 2348 * the MAC client. 2349 */ 2350 flent = (mcip->mci_nflents == 0) ? mcip->mci_flent : NULL; 2351 2352 /* We are configuring the unicast flow now */ 2353 if (!MCIP_DATAPATH_SETUP(mcip)) { 2354 2355 if (mrp != NULL) { 2356 MAC_CLIENT_SET_PRIORITY_RANGE(mcip, 2357 (mrp->mrp_mask & MRP_PRIORITY) ? mrp->mrp_priority : 2358 MPL_LINK_DEFAULT); 2359 } 2360 if ((err = mac_unicast_flow_create(mcip, mac_addr, vid, 2361 isprimary, B_TRUE, &flent, mrp)) != 0) 2362 goto bail; 2363 2364 mip->mi_nactiveclients++; 2365 nactiveclients_added = B_TRUE; 2366 2367 /* 2368 * This will allocate the RX ring group if possible for the 2369 * flow and program the software classifier as needed. 2370 */ 2371 if ((err = mac_datapath_setup(mcip, flent, SRST_LINK)) != 0) 2372 goto bail; 2373 2374 if (no_unicast) 2375 goto done_setup; 2376 /* 2377 * The unicast MAC address must have been added successfully. 2378 */ 2379 ASSERT(mcip->mci_unicast != NULL); 2380 2381 /* 2382 * Push down the sub-flows that were defined on this link 2383 * hitherto. The flows are added to the active flow table 2384 * and SRS, softrings etc. are created as needed. 2385 */ 2386 mac_link_init_flows((mac_client_handle_t)mcip); 2387 } else { 2388 mac_address_t *map = mcip->mci_unicast; 2389 2390 ASSERT(!no_unicast); 2391 /* 2392 * A unicast flow already exists for that MAC client 2393 * so this flow must be the same MAC address but with 2394 * a different VID. It has been checked by 2395 * mac_addr_in_use(). 2396 * 2397 * We will use the SRS etc. from the initial 2398 * mci_flent. We don't need to create a kstat for 2399 * this, as except for the fdesc, everything will be 2400 * used from the first flent. 2401 * 2402 * The only time we should see multiple flents on the 2403 * same MAC client is on the sun4v vsw. If we removed 2404 * that code we should be able to remove the entire 2405 * notion of multiple flents on a MAC client (this 2406 * doesn't affect sub/user flows because they have 2407 * their own list unrelated to mci_flent_list). 2408 */ 2409 if (bcmp(mac_addr, map->ma_addr, map->ma_len) != 0) { 2410 err = EINVAL; 2411 goto bail; 2412 } 2413 2414 if ((err = mac_unicast_flow_create(mcip, mac_addr, vid, 2415 isprimary, B_FALSE, &flent, NULL)) != 0) { 2416 goto bail; 2417 } 2418 if ((err = mac_flow_add(mip->mi_flow_tab, flent)) != 0) { 2419 FLOW_FINAL_REFRELE(flent); 2420 goto bail; 2421 } 2422 2423 /* update the multicast group for this vid */ 2424 mac_client_bcast_refresh(mcip, mac_client_update_mcast, 2425 (void *)flent, B_TRUE); 2426 2427 } 2428 2429 /* populate the shared MAC address */ 2430 muip->mui_map = mcip->mci_unicast; 2431 2432 rw_enter(&mcip->mci_rw_lock, RW_WRITER); 2433 muip->mui_next = mcip->mci_unicast_list; 2434 mcip->mci_unicast_list = muip; 2435 rw_exit(&mcip->mci_rw_lock); 2436 2437 done_setup: 2438 /* 2439 * First add the flent to the flow list of this mcip. Then set 2440 * the mip's mi_single_active_client if needed. The Rx path assumes 2441 * that mip->mi_single_active_client will always have an associated 2442 * flent. 2443 */ 2444 mac_client_add_to_flow_list(mcip, flent); 2445 if (nactiveclients_added) 2446 mac_update_single_active_client(mip); 2447 /* 2448 * Trigger a renegotiation of the capabilities when the number of 2449 * active clients changes from 1 to 2, since some of the capabilities 2450 * might have to be disabled. Also send a MAC_NOTE_LINK notification 2451 * to all the MAC clients whenever physical link is DOWN. 2452 */ 2453 if (mip->mi_nactiveclients == 2) { 2454 mac_capab_update((mac_handle_t)mip); 2455 mac_virtual_link_update(mip); 2456 } 2457 /* 2458 * Now that the setup is complete, clear the INCIPIENT flag. 2459 * The flag was set to avoid incoming packets seeing inconsistent 2460 * structures while the setup was in progress. Clear the mci_tx_flag 2461 * by calling mac_tx_client_block. It is possible that 2462 * mac_unicast_remove was called prior to this mac_unicast_add which 2463 * could have set the MCI_TX_QUIESCE flag. 2464 */ 2465 if (flent->fe_rx_ring_group != NULL) 2466 mac_rx_group_unmark(flent->fe_rx_ring_group, MR_INCIPIENT); 2467 FLOW_UNMARK(flent, FE_INCIPIENT); 2468 2469 /* 2470 * If this is an aggr port client, don't enable the flow's 2471 * datapath at this stage. Otherwise, bcast traffic could 2472 * arrive while the aggr port is in the process of 2473 * initializing. Instead, the flow's datapath is started later 2474 * when mac_client_set_flow_cb() is called. 2475 */ 2476 if ((mcip->mci_state_flags & MCIS_IS_AGGR_PORT) == 0) 2477 FLOW_UNMARK(flent, FE_MC_NO_DATAPATH); 2478 2479 mac_tx_client_unblock(mcip); 2480 return (0); 2481 bail: 2482 if (bcast_added) 2483 mac_bcast_delete(mcip, mip->mi_type->mt_brdcst_addr, vid); 2484 2485 if (nactiveclients_added) 2486 mip->mi_nactiveclients--; 2487 2488 if (mac_started) 2489 mac_stop((mac_handle_t)mip); 2490 2491 return (err); 2492 } 2493 2494 /* 2495 * Return the passive primary MAC client, if present. The passive client is 2496 * a stand-by client that has the same unicast address as another that is 2497 * currenly active. Once the active client goes away, the passive client 2498 * becomes active. 2499 */ 2500 static mac_client_impl_t * 2501 mac_get_passive_primary_client(mac_impl_t *mip) 2502 { 2503 mac_client_impl_t *mcip; 2504 2505 for (mcip = mip->mi_clients_list; mcip != NULL; 2506 mcip = mcip->mci_client_next) { 2507 if (mac_is_primary_client(mcip) && 2508 (mcip->mci_flags & MAC_CLIENT_FLAGS_PASSIVE_PRIMARY) != 0) { 2509 return (mcip); 2510 } 2511 } 2512 return (NULL); 2513 } 2514 2515 /* 2516 * Add a new unicast address to the MAC client. 2517 * 2518 * The MAC address can be specified either by value, or the MAC client 2519 * can specify that it wants to use the primary MAC address of the 2520 * underlying MAC. See the introductory comments at the beginning 2521 * of this file for more more information on primary MAC addresses. 2522 * 2523 * Note also the tuple (MAC address, VID) must be unique 2524 * for the MAC clients defined on top of the same underlying MAC 2525 * instance, unless the MAC_UNICAST_NODUPCHECK is specified. 2526 * 2527 * In no case can a client use the PVID for the MAC, if the MAC has one set. 2528 */ 2529 int 2530 i_mac_unicast_add(mac_client_handle_t mch, uint8_t *mac_addr, uint16_t flags, 2531 mac_unicast_handle_t *mah, uint16_t vid, mac_diag_t *diag) 2532 { 2533 mac_client_impl_t *mcip = (mac_client_impl_t *)mch; 2534 mac_impl_t *mip = mcip->mci_mip; 2535 int err; 2536 uint_t mac_len = mip->mi_type->mt_addr_length; 2537 boolean_t check_dups = !(flags & MAC_UNICAST_NODUPCHECK); 2538 boolean_t fastpath_disabled = B_FALSE; 2539 boolean_t is_primary = (flags & MAC_UNICAST_PRIMARY); 2540 boolean_t is_unicast_hw = (flags & MAC_UNICAST_HW); 2541 mac_resource_props_t *mrp; 2542 boolean_t passive_client = B_FALSE; 2543 mac_unicast_impl_t *muip; 2544 boolean_t is_vnic_primary = 2545 (flags & MAC_UNICAST_VNIC_PRIMARY); 2546 2547 /* 2548 * When the VID is non-zero the underlying MAC cannot be a 2549 * VNIC. I.e., dladm create-vlan cannot take a VNIC as 2550 * argument, only the primary MAC client. 2551 */ 2552 ASSERT(!((mip->mi_state_flags & MIS_IS_VNIC) && (vid != VLAN_ID_NONE))); 2553 2554 *diag = MAC_DIAG_NONE; 2555 2556 /* 2557 * Can't unicast add if the client asked only for minimal datapath 2558 * setup. 2559 */ 2560 if (mcip->mci_state_flags & MCIS_NO_UNICAST_ADDR) 2561 return (ENOTSUP); 2562 2563 /* 2564 * Check for an attempted use of the current Port VLAN ID, if enabled. 2565 * No client may use it. 2566 */ 2567 if (mip->mi_pvid != VLAN_ID_NONE && vid == mip->mi_pvid) 2568 return (EBUSY); 2569 2570 /* 2571 * Check whether it's the primary client and flag it. 2572 */ 2573 if (!(mcip->mci_state_flags & MCIS_IS_VNIC) && is_primary && 2574 vid == VLAN_ID_NONE) 2575 mcip->mci_flags |= MAC_CLIENT_FLAGS_PRIMARY; 2576 2577 /* 2578 * is_vnic_primary is true when we come here as a VLAN VNIC 2579 * which uses the primary MAC client's address but with a non-zero 2580 * VID. In this case the MAC address is not specified by an upper 2581 * MAC client. 2582 */ 2583 if ((mcip->mci_state_flags & MCIS_IS_VNIC) && is_primary && 2584 !is_vnic_primary) { 2585 /* 2586 * The address is being set by the upper MAC client 2587 * of a VNIC. The MAC address was already set by the 2588 * VNIC driver during VNIC creation. 2589 * 2590 * Note: a VNIC has only one MAC address. We return 2591 * the MAC unicast address handle of the lower MAC client 2592 * corresponding to the VNIC. We allocate a new entry 2593 * which is flagged appropriately, so that mac_unicast_remove() 2594 * doesn't attempt to free the original entry that 2595 * was allocated by the VNIC driver. 2596 */ 2597 ASSERT(mcip->mci_unicast != NULL); 2598 2599 /* Check for VLAN flags, if present */ 2600 if ((flags & MAC_UNICAST_TAG_DISABLE) != 0) 2601 mcip->mci_state_flags |= MCIS_TAG_DISABLE; 2602 2603 if ((flags & MAC_UNICAST_STRIP_DISABLE) != 0) 2604 mcip->mci_state_flags |= MCIS_STRIP_DISABLE; 2605 2606 if ((flags & MAC_UNICAST_DISABLE_TX_VID_CHECK) != 0) 2607 mcip->mci_state_flags |= MCIS_DISABLE_TX_VID_CHECK; 2608 2609 /* 2610 * Ensure that the primary unicast address of the VNIC 2611 * is added only once unless we have the 2612 * MAC_CLIENT_FLAGS_MULTI_PRIMARY set (and this is not 2613 * a passive MAC client). 2614 */ 2615 if ((mcip->mci_flags & MAC_CLIENT_FLAGS_VNIC_PRIMARY) != 0) { 2616 if ((mcip->mci_flags & 2617 MAC_CLIENT_FLAGS_MULTI_PRIMARY) == 0 || 2618 (mcip->mci_flags & 2619 MAC_CLIENT_FLAGS_PASSIVE_PRIMARY) != 0) { 2620 return (EBUSY); 2621 } 2622 mcip->mci_flags |= MAC_CLIENT_FLAGS_PASSIVE_PRIMARY; 2623 passive_client = B_TRUE; 2624 } 2625 2626 mcip->mci_flags |= MAC_CLIENT_FLAGS_VNIC_PRIMARY; 2627 2628 /* 2629 * Create a handle for vid 0. 2630 */ 2631 ASSERT(vid == VLAN_ID_NONE); 2632 muip = kmem_zalloc(sizeof (mac_unicast_impl_t), KM_SLEEP); 2633 muip->mui_vid = vid; 2634 *mah = (mac_unicast_handle_t)muip; 2635 /* 2636 * This will be used by the caller to defer setting the 2637 * rx functions. 2638 */ 2639 if (passive_client) 2640 return (EAGAIN); 2641 return (0); 2642 } 2643 2644 /* primary MAC clients cannot be opened on top of anchor VNICs */ 2645 if ((is_vnic_primary || is_primary) && 2646 i_mac_capab_get((mac_handle_t)mip, MAC_CAPAB_ANCHOR_VNIC, NULL)) { 2647 return (ENXIO); 2648 } 2649 2650 /* 2651 * If this is a VNIC/VLAN, disable softmac fast-path. This is 2652 * only relevant to legacy devices which use softmac to 2653 * interface with GLDv3. 2654 */ 2655 if (mcip->mci_state_flags & MCIS_IS_VNIC) { 2656 err = mac_fastpath_disable((mac_handle_t)mip); 2657 if (err != 0) 2658 return (err); 2659 fastpath_disabled = B_TRUE; 2660 } 2661 2662 /* 2663 * Return EBUSY if: 2664 * - there is an exclusively active mac client exists. 2665 * - this is an exclusive active mac client but 2666 * a. there is already active mac clients exist, or 2667 * b. fastpath streams are already plumbed on this legacy device 2668 * - the mac creator has disallowed active mac clients. 2669 */ 2670 if (mip->mi_state_flags & (MIS_EXCLUSIVE|MIS_NO_ACTIVE)) { 2671 if (fastpath_disabled) 2672 mac_fastpath_enable((mac_handle_t)mip); 2673 return (EBUSY); 2674 } 2675 2676 if (mcip->mci_state_flags & MCIS_EXCLUSIVE) { 2677 ASSERT(!fastpath_disabled); 2678 if (mip->mi_nactiveclients != 0) 2679 return (EBUSY); 2680 2681 if ((mip->mi_state_flags & MIS_LEGACY) && 2682 !(mip->mi_capab_legacy.ml_active_set(mip->mi_driver))) { 2683 return (EBUSY); 2684 } 2685 mip->mi_state_flags |= MIS_EXCLUSIVE; 2686 } 2687 2688 mrp = kmem_zalloc(sizeof (*mrp), KM_SLEEP); 2689 if (is_primary && !(mcip->mci_state_flags & (MCIS_IS_VNIC | 2690 MCIS_IS_AGGR_PORT))) { 2691 /* 2692 * Apply the property cached in the mac_impl_t to the primary 2693 * mac client. If the mac client is a VNIC or an aggregation 2694 * port, its property should be set in the mcip when the 2695 * VNIC/aggr was created. 2696 */ 2697 mac_get_resources((mac_handle_t)mip, mrp); 2698 (void) mac_client_set_resources(mch, mrp); 2699 } else if (mcip->mci_state_flags & MCIS_IS_VNIC) { 2700 /* 2701 * This is a VLAN client sharing the address of the 2702 * primary MAC client; i.e., one created via dladm 2703 * create-vlan. We don't support specifying ring 2704 * properties for this type of client as it inherits 2705 * these from the primary MAC client. 2706 */ 2707 if (is_vnic_primary) { 2708 mac_resource_props_t *vmrp; 2709 2710 vmrp = MCIP_RESOURCE_PROPS(mcip); 2711 if (vmrp->mrp_mask & MRP_RX_RINGS || 2712 vmrp->mrp_mask & MRP_TX_RINGS) { 2713 if (fastpath_disabled) 2714 mac_fastpath_enable((mac_handle_t)mip); 2715 kmem_free(mrp, sizeof (*mrp)); 2716 return (ENOTSUP); 2717 } 2718 /* 2719 * Additionally we also need to inherit any 2720 * rings property from the MAC. 2721 */ 2722 mac_get_resources((mac_handle_t)mip, mrp); 2723 if (mrp->mrp_mask & MRP_RX_RINGS) { 2724 vmrp->mrp_mask |= MRP_RX_RINGS; 2725 vmrp->mrp_nrxrings = mrp->mrp_nrxrings; 2726 } 2727 if (mrp->mrp_mask & MRP_TX_RINGS) { 2728 vmrp->mrp_mask |= MRP_TX_RINGS; 2729 vmrp->mrp_ntxrings = mrp->mrp_ntxrings; 2730 } 2731 } 2732 bcopy(MCIP_RESOURCE_PROPS(mcip), mrp, sizeof (*mrp)); 2733 } 2734 2735 muip = kmem_zalloc(sizeof (mac_unicast_impl_t), KM_SLEEP); 2736 muip->mui_vid = vid; 2737 2738 if (is_primary || is_vnic_primary) { 2739 mac_addr = mip->mi_addr; 2740 } else { 2741 2742 /* 2743 * Verify the validity of the specified MAC addresses value. 2744 */ 2745 if (!mac_unicst_verify((mac_handle_t)mip, mac_addr, mac_len)) { 2746 *diag = MAC_DIAG_MACADDR_INVALID; 2747 err = EINVAL; 2748 goto bail_out; 2749 } 2750 2751 /* 2752 * Make sure that the specified MAC address is different 2753 * than the unicast MAC address of the underlying NIC. 2754 */ 2755 if (check_dups && bcmp(mip->mi_addr, mac_addr, mac_len) == 0) { 2756 *diag = MAC_DIAG_MACADDR_NIC; 2757 err = EINVAL; 2758 goto bail_out; 2759 } 2760 } 2761 2762 /* 2763 * Set the flags here so that if this is a passive client, we 2764 * can return and set it when we call mac_client_datapath_setup 2765 * when this becomes the active client. If we defer to using these 2766 * flags to mac_client_datapath_setup, then for a passive client, 2767 * we'd have to store the flags somewhere (probably fe_flags) 2768 * and then use it. 2769 */ 2770 if (!MCIP_DATAPATH_SETUP(mcip)) { 2771 if (is_unicast_hw) { 2772 /* 2773 * The client requires a hardware MAC address slot 2774 * for that unicast address. Since we support only 2775 * one unicast MAC address per client, flag the 2776 * MAC client itself. 2777 */ 2778 mcip->mci_state_flags |= MCIS_UNICAST_HW; 2779 } 2780 2781 /* Check for VLAN flags, if present */ 2782 if ((flags & MAC_UNICAST_TAG_DISABLE) != 0) 2783 mcip->mci_state_flags |= MCIS_TAG_DISABLE; 2784 2785 if ((flags & MAC_UNICAST_STRIP_DISABLE) != 0) 2786 mcip->mci_state_flags |= MCIS_STRIP_DISABLE; 2787 2788 if ((flags & MAC_UNICAST_DISABLE_TX_VID_CHECK) != 0) 2789 mcip->mci_state_flags |= MCIS_DISABLE_TX_VID_CHECK; 2790 } else { 2791 /* 2792 * Assert that the specified flags are consistent with the 2793 * flags specified by previous calls to mac_unicast_add(). 2794 */ 2795 ASSERT(((flags & MAC_UNICAST_TAG_DISABLE) != 0 && 2796 (mcip->mci_state_flags & MCIS_TAG_DISABLE) != 0) || 2797 ((flags & MAC_UNICAST_TAG_DISABLE) == 0 && 2798 (mcip->mci_state_flags & MCIS_TAG_DISABLE) == 0)); 2799 2800 ASSERT(((flags & MAC_UNICAST_STRIP_DISABLE) != 0 && 2801 (mcip->mci_state_flags & MCIS_STRIP_DISABLE) != 0) || 2802 ((flags & MAC_UNICAST_STRIP_DISABLE) == 0 && 2803 (mcip->mci_state_flags & MCIS_STRIP_DISABLE) == 0)); 2804 2805 ASSERT(((flags & MAC_UNICAST_DISABLE_TX_VID_CHECK) != 0 && 2806 (mcip->mci_state_flags & MCIS_DISABLE_TX_VID_CHECK) != 0) || 2807 ((flags & MAC_UNICAST_DISABLE_TX_VID_CHECK) == 0 && 2808 (mcip->mci_state_flags & MCIS_DISABLE_TX_VID_CHECK) == 0)); 2809 2810 /* 2811 * Make sure the client is consistent about its requests 2812 * for MAC addresses. I.e. all requests from the clients 2813 * must have the MAC_UNICAST_HW flag set or clear. 2814 */ 2815 if (((mcip->mci_state_flags & MCIS_UNICAST_HW) != 0 && 2816 !is_unicast_hw) || 2817 ((mcip->mci_state_flags & MCIS_UNICAST_HW) == 0 && 2818 is_unicast_hw)) { 2819 err = EINVAL; 2820 goto bail_out; 2821 } 2822 } 2823 /* 2824 * Make sure the MAC address is not already used by 2825 * another MAC client defined on top of the same 2826 * underlying NIC. Unless we have MAC_CLIENT_FLAGS_MULTI_PRIMARY 2827 * set when we allow a passive client to be present which will 2828 * be activated when the currently active client goes away - this 2829 * works only with primary addresses. 2830 */ 2831 if ((check_dups || is_primary || is_vnic_primary) && 2832 mac_addr_in_use(mip, mac_addr, vid)) { 2833 /* 2834 * Must have set the multiple primary address flag when 2835 * we did a mac_client_open AND this should be a primary 2836 * MAC client AND there should not already be a passive 2837 * primary. If all is true then we let this succeed 2838 * even if the address is a dup. 2839 */ 2840 if ((mcip->mci_flags & MAC_CLIENT_FLAGS_MULTI_PRIMARY) == 0 || 2841 (mcip->mci_flags & MAC_CLIENT_FLAGS_PRIMARY) == 0 || 2842 mac_get_passive_primary_client(mip) != NULL) { 2843 *diag = MAC_DIAG_MACADDR_INUSE; 2844 err = EEXIST; 2845 goto bail_out; 2846 } 2847 ASSERT((mcip->mci_flags & 2848 MAC_CLIENT_FLAGS_PASSIVE_PRIMARY) == 0); 2849 mcip->mci_flags |= MAC_CLIENT_FLAGS_PASSIVE_PRIMARY; 2850 kmem_free(mrp, sizeof (*mrp)); 2851 2852 /* 2853 * Stash the unicast address handle, we will use it when 2854 * we set up the passive client. 2855 */ 2856 mcip->mci_p_unicast_list = muip; 2857 *mah = (mac_unicast_handle_t)muip; 2858 return (0); 2859 } 2860 2861 err = mac_client_datapath_setup(mcip, vid, mac_addr, mrp, 2862 is_primary || is_vnic_primary, muip); 2863 if (err != 0) 2864 goto bail_out; 2865 2866 kmem_free(mrp, sizeof (*mrp)); 2867 *mah = (mac_unicast_handle_t)muip; 2868 return (0); 2869 2870 bail_out: 2871 if (fastpath_disabled) 2872 mac_fastpath_enable((mac_handle_t)mip); 2873 if (mcip->mci_state_flags & MCIS_EXCLUSIVE) { 2874 mip->mi_state_flags &= ~MIS_EXCLUSIVE; 2875 if (mip->mi_state_flags & MIS_LEGACY) { 2876 mip->mi_capab_legacy.ml_active_clear( 2877 mip->mi_driver); 2878 } 2879 } 2880 kmem_free(mrp, sizeof (*mrp)); 2881 kmem_free(muip, sizeof (mac_unicast_impl_t)); 2882 return (err); 2883 } 2884 2885 /* 2886 * Wrapper function to mac_unicast_add when we want to have the same mac 2887 * client open for two instances, one that is currently active and another 2888 * that will become active when the current one is removed. In this case 2889 * mac_unicast_add will return EGAIN and we will save the rx function and 2890 * arg which will be used when we activate the passive client in 2891 * mac_unicast_remove. 2892 */ 2893 int 2894 mac_unicast_add_set_rx(mac_client_handle_t mch, uint8_t *mac_addr, 2895 uint16_t flags, mac_unicast_handle_t *mah, uint16_t vid, mac_diag_t *diag, 2896 mac_rx_t rx_fn, void *arg) 2897 { 2898 mac_client_impl_t *mcip = (mac_client_impl_t *)mch; 2899 uint_t err; 2900 2901 err = mac_unicast_add(mch, mac_addr, flags, mah, vid, diag); 2902 if (err != 0 && err != EAGAIN) 2903 return (err); 2904 if (err == EAGAIN) { 2905 if (rx_fn != NULL) { 2906 mcip->mci_rx_p_fn = rx_fn; 2907 mcip->mci_rx_p_arg = arg; 2908 } 2909 return (0); 2910 } 2911 if (rx_fn != NULL) 2912 mac_rx_set(mch, rx_fn, arg); 2913 return (err); 2914 } 2915 2916 int 2917 mac_unicast_add(mac_client_handle_t mch, uint8_t *mac_addr, uint16_t flags, 2918 mac_unicast_handle_t *mah, uint16_t vid, mac_diag_t *diag) 2919 { 2920 mac_impl_t *mip = ((mac_client_impl_t *)mch)->mci_mip; 2921 uint_t err; 2922 2923 i_mac_perim_enter(mip); 2924 err = i_mac_unicast_add(mch, mac_addr, flags, mah, vid, diag); 2925 i_mac_perim_exit(mip); 2926 2927 return (err); 2928 } 2929 2930 static void 2931 mac_client_datapath_teardown(mac_client_handle_t mch, mac_unicast_impl_t *muip, 2932 flow_entry_t *flent) 2933 { 2934 mac_client_impl_t *mcip = (mac_client_impl_t *)mch; 2935 mac_impl_t *mip = mcip->mci_mip; 2936 boolean_t no_unicast; 2937 2938 /* 2939 * If we have not added a unicast address for this MAC client, just 2940 * teardown the datapath. 2941 */ 2942 no_unicast = mcip->mci_state_flags & MCIS_NO_UNICAST_ADDR; 2943 2944 if (!no_unicast) { 2945 /* 2946 * We would have initialized subflows etc. only if we brought 2947 * up the primary client and set the unicast unicast address 2948 * etc. Deactivate the flows. The flow entry will be removed 2949 * from the active flow tables, and the associated SRS, 2950 * softrings etc will be deleted. But the flow entry itself 2951 * won't be destroyed, instead it will continue to be archived 2952 * off the the global flow hash list, for a possible future 2953 * activation when say IP is plumbed again. 2954 */ 2955 mac_link_release_flows(mch); 2956 } 2957 mip->mi_nactiveclients--; 2958 mac_update_single_active_client(mip); 2959 2960 /* Tear down the data path */ 2961 mac_datapath_teardown(mcip, mcip->mci_flent, SRST_LINK); 2962 2963 /* 2964 * Prevent any future access to the flow entry through the mci_flent 2965 * pointer by setting the mci_flent to NULL. Access to mci_flent in 2966 * mac_bcast_send is also under mi_rw_lock. 2967 */ 2968 rw_enter(&mip->mi_rw_lock, RW_WRITER); 2969 flent = mcip->mci_flent; 2970 mac_client_remove_flow_from_list(mcip, flent); 2971 2972 if (mcip->mci_state_flags & MCIS_DESC_LOGGED) 2973 mcip->mci_state_flags &= ~MCIS_DESC_LOGGED; 2974 2975 /* 2976 * This is the last unicast address being removed and there shouldn't 2977 * be any outbound data threads at this point coming down from mac 2978 * clients. We have waited for the data threads to finish before 2979 * starting dld_str_detach. Non-data threads must access TX SRS 2980 * under mi_rw_lock. 2981 */ 2982 rw_exit(&mip->mi_rw_lock); 2983 2984 /* 2985 * Don't use FLOW_MARK with FE_MC_NO_DATAPATH, as the flow might 2986 * contain other flags, such as FE_CONDEMNED, which we need to 2987 * cleared. We don't call mac_flow_cleanup() for this unicast 2988 * flow as we have a already cleaned up SRSs etc. (via the teadown 2989 * path). We just clear the stats and reset the initial callback 2990 * function, the rest will be set when we call mac_flow_create, 2991 * if at all. 2992 */ 2993 mutex_enter(&flent->fe_lock); 2994 ASSERT(flent->fe_refcnt == 1 && flent->fe_mbg == NULL && 2995 flent->fe_tx_srs == NULL && flent->fe_rx_srs_cnt == 0); 2996 flent->fe_flags = FE_MC_NO_DATAPATH; 2997 flow_stat_destroy(flent); 2998 mac_misc_stat_delete(flent); 2999 3000 /* Initialize the receiver function to a safe routine */ 3001 flent->fe_cb_fn = (flow_fn_t)mac_pkt_drop; 3002 flent->fe_cb_arg1 = NULL; 3003 flent->fe_cb_arg2 = NULL; 3004 3005 flent->fe_index = -1; 3006 mutex_exit(&flent->fe_lock); 3007 3008 if (mip->mi_type->mt_brdcst_addr != NULL) { 3009 ASSERT(muip != NULL || no_unicast); 3010 mac_bcast_delete(mcip, mip->mi_type->mt_brdcst_addr, 3011 muip != NULL ? muip->mui_vid : VLAN_ID_NONE); 3012 } 3013 3014 if (mip->mi_nactiveclients == 1) { 3015 mac_capab_update((mac_handle_t)mip); 3016 mac_virtual_link_update(mip); 3017 } 3018 3019 if (mcip->mci_state_flags & MCIS_EXCLUSIVE) { 3020 mip->mi_state_flags &= ~MIS_EXCLUSIVE; 3021 3022 if (mip->mi_state_flags & MIS_LEGACY) 3023 mip->mi_capab_legacy.ml_active_clear(mip->mi_driver); 3024 } 3025 3026 mcip->mci_state_flags &= ~MCIS_UNICAST_HW; 3027 3028 if (mcip->mci_state_flags & MCIS_TAG_DISABLE) 3029 mcip->mci_state_flags &= ~MCIS_TAG_DISABLE; 3030 3031 if (mcip->mci_state_flags & MCIS_STRIP_DISABLE) 3032 mcip->mci_state_flags &= ~MCIS_STRIP_DISABLE; 3033 3034 if (mcip->mci_state_flags & MCIS_DISABLE_TX_VID_CHECK) 3035 mcip->mci_state_flags &= ~MCIS_DISABLE_TX_VID_CHECK; 3036 3037 if (muip != NULL) 3038 kmem_free(muip, sizeof (mac_unicast_impl_t)); 3039 mac_protect_cancel_timer(mcip); 3040 mac_protect_flush_dynamic(mcip); 3041 3042 bzero(&mcip->mci_misc_stat, sizeof (mcip->mci_misc_stat)); 3043 /* 3044 * Disable fastpath if this is a VNIC or a VLAN. 3045 */ 3046 if (mcip->mci_state_flags & MCIS_IS_VNIC) 3047 mac_fastpath_enable((mac_handle_t)mip); 3048 mac_stop((mac_handle_t)mip); 3049 } 3050 3051 /* 3052 * Remove a MAC address which was previously added by mac_unicast_add(). 3053 */ 3054 int 3055 mac_unicast_remove(mac_client_handle_t mch, mac_unicast_handle_t mah) 3056 { 3057 mac_client_impl_t *mcip = (mac_client_impl_t *)mch; 3058 mac_unicast_impl_t *muip = (mac_unicast_impl_t *)mah; 3059 mac_unicast_impl_t *pre; 3060 mac_impl_t *mip = mcip->mci_mip; 3061 flow_entry_t *flent; 3062 uint16_t mui_vid; 3063 3064 i_mac_perim_enter(mip); 3065 if (mcip->mci_flags & MAC_CLIENT_FLAGS_VNIC_PRIMARY) { 3066 /* 3067 * Call made by the upper MAC client of a VNIC. 3068 * There's nothing much to do, the unicast address will 3069 * be removed by the VNIC driver when the VNIC is deleted, 3070 * but let's ensure that all our transmit is done before 3071 * the client does a mac_client_stop lest it trigger an 3072 * assert in the driver. 3073 */ 3074 ASSERT(muip->mui_vid == VLAN_ID_NONE); 3075 3076 mac_tx_client_flush(mcip); 3077 3078 if ((mcip->mci_flags & MAC_CLIENT_FLAGS_PASSIVE_PRIMARY) != 0) { 3079 mcip->mci_flags &= ~MAC_CLIENT_FLAGS_PASSIVE_PRIMARY; 3080 if (mcip->mci_rx_p_fn != NULL) { 3081 mac_rx_set(mch, mcip->mci_rx_p_fn, 3082 mcip->mci_rx_p_arg); 3083 mcip->mci_rx_p_fn = NULL; 3084 mcip->mci_rx_p_arg = NULL; 3085 } 3086 kmem_free(muip, sizeof (mac_unicast_impl_t)); 3087 i_mac_perim_exit(mip); 3088 return (0); 3089 } 3090 mcip->mci_flags &= ~MAC_CLIENT_FLAGS_VNIC_PRIMARY; 3091 3092 if (mcip->mci_state_flags & MCIS_TAG_DISABLE) 3093 mcip->mci_state_flags &= ~MCIS_TAG_DISABLE; 3094 3095 if (mcip->mci_state_flags & MCIS_STRIP_DISABLE) 3096 mcip->mci_state_flags &= ~MCIS_STRIP_DISABLE; 3097 3098 if (mcip->mci_state_flags & MCIS_DISABLE_TX_VID_CHECK) 3099 mcip->mci_state_flags &= ~MCIS_DISABLE_TX_VID_CHECK; 3100 3101 kmem_free(muip, sizeof (mac_unicast_impl_t)); 3102 i_mac_perim_exit(mip); 3103 return (0); 3104 } 3105 3106 ASSERT(muip != NULL); 3107 3108 /* 3109 * We are removing a passive client, we haven't setup the datapath 3110 * for this yet, so nothing much to do. 3111 */ 3112 if ((mcip->mci_flags & MAC_CLIENT_FLAGS_PASSIVE_PRIMARY) != 0) { 3113 3114 ASSERT((mcip->mci_flent->fe_flags & FE_MC_NO_DATAPATH) != 0); 3115 ASSERT(mcip->mci_p_unicast_list == muip); 3116 3117 mcip->mci_flags &= ~MAC_CLIENT_FLAGS_PASSIVE_PRIMARY; 3118 3119 mcip->mci_p_unicast_list = NULL; 3120 mcip->mci_rx_p_fn = NULL; 3121 mcip->mci_rx_p_arg = NULL; 3122 3123 mcip->mci_state_flags &= ~MCIS_UNICAST_HW; 3124 3125 if (mcip->mci_state_flags & MCIS_TAG_DISABLE) 3126 mcip->mci_state_flags &= ~MCIS_TAG_DISABLE; 3127 3128 if (mcip->mci_state_flags & MCIS_STRIP_DISABLE) 3129 mcip->mci_state_flags &= ~MCIS_STRIP_DISABLE; 3130 3131 if (mcip->mci_state_flags & MCIS_DISABLE_TX_VID_CHECK) 3132 mcip->mci_state_flags &= ~MCIS_DISABLE_TX_VID_CHECK; 3133 3134 kmem_free(muip, sizeof (mac_unicast_impl_t)); 3135 i_mac_perim_exit(mip); 3136 return (0); 3137 } 3138 3139 /* 3140 * Remove the VID from the list of client's VIDs. 3141 */ 3142 pre = mcip->mci_unicast_list; 3143 if (muip == pre) { 3144 mcip->mci_unicast_list = muip->mui_next; 3145 } else { 3146 while ((pre->mui_next != NULL) && (pre->mui_next != muip)) 3147 pre = pre->mui_next; 3148 ASSERT(pre->mui_next == muip); 3149 rw_enter(&mcip->mci_rw_lock, RW_WRITER); 3150 pre->mui_next = muip->mui_next; 3151 rw_exit(&mcip->mci_rw_lock); 3152 } 3153 3154 if (!mac_client_single_rcvr(mcip)) { 3155 /* 3156 * This MAC client is shared by more than one unicast 3157 * addresses, so we will just remove the flent 3158 * corresponding to the address being removed. We don't invoke 3159 * mac_rx_classify_flow_rem() since the additional flow is 3160 * not associated with its own separate set of SRS and rings, 3161 * and these constructs are still needed for the remaining 3162 * flows. 3163 */ 3164 flent = mac_client_get_flow(mcip, muip); 3165 VERIFY3P(flent, !=, NULL); 3166 3167 /* 3168 * The first one is disappearing, need to make sure 3169 * we replace it with another from the list of 3170 * shared clients. 3171 */ 3172 if (flent == mcip->mci_flent) 3173 flent = mac_client_swap_mciflent(mcip); 3174 mac_client_remove_flow_from_list(mcip, flent); 3175 mac_flow_remove(mip->mi_flow_tab, flent, B_FALSE); 3176 mac_flow_wait(flent, FLOW_DRIVER_UPCALL); 3177 3178 /* 3179 * The multicast groups that were added by the client so 3180 * far must be removed from the brodcast domain corresponding 3181 * to the VID being removed. 3182 */ 3183 mac_client_bcast_refresh(mcip, mac_client_update_mcast, 3184 (void *)flent, B_FALSE); 3185 3186 if (mip->mi_type->mt_brdcst_addr != NULL) { 3187 mac_bcast_delete(mcip, mip->mi_type->mt_brdcst_addr, 3188 muip->mui_vid); 3189 } 3190 3191 FLOW_FINAL_REFRELE(flent); 3192 ASSERT(!(mcip->mci_state_flags & MCIS_EXCLUSIVE)); 3193 3194 /* 3195 * Enable fastpath if this is a VNIC or a VLAN. 3196 */ 3197 if (mcip->mci_state_flags & MCIS_IS_VNIC) 3198 mac_fastpath_enable((mac_handle_t)mip); 3199 mac_stop((mac_handle_t)mip); 3200 i_mac_perim_exit(mip); 3201 return (0); 3202 } 3203 3204 mui_vid = muip->mui_vid; 3205 mac_client_datapath_teardown(mch, muip, flent); 3206 3207 if ((mcip->mci_flags & MAC_CLIENT_FLAGS_PRIMARY) && 3208 mui_vid == VLAN_ID_NONE) { 3209 mcip->mci_flags &= ~MAC_CLIENT_FLAGS_PRIMARY; 3210 } else { 3211 i_mac_perim_exit(mip); 3212 return (0); 3213 } 3214 3215 /* 3216 * If we are removing the primary, check if we have a passive primary 3217 * client that we need to activate now. 3218 */ 3219 mcip = mac_get_passive_primary_client(mip); 3220 if (mcip != NULL) { 3221 mac_resource_props_t *mrp; 3222 mac_unicast_impl_t *muip; 3223 3224 mcip->mci_flags &= ~MAC_CLIENT_FLAGS_PASSIVE_PRIMARY; 3225 mrp = kmem_zalloc(sizeof (*mrp), KM_SLEEP); 3226 3227 /* 3228 * Apply the property cached in the mac_impl_t to the 3229 * primary mac client. 3230 */ 3231 mac_get_resources((mac_handle_t)mip, mrp); 3232 (void) mac_client_set_resources(mch, mrp); 3233 ASSERT(mcip->mci_p_unicast_list != NULL); 3234 muip = mcip->mci_p_unicast_list; 3235 mcip->mci_p_unicast_list = NULL; 3236 if (mac_client_datapath_setup(mcip, VLAN_ID_NONE, 3237 mip->mi_addr, mrp, B_TRUE, muip) == 0) { 3238 if (mcip->mci_rx_p_fn != NULL) { 3239 mac_rx_set(mch, mcip->mci_rx_p_fn, 3240 mcip->mci_rx_p_arg); 3241 mcip->mci_rx_p_fn = NULL; 3242 mcip->mci_rx_p_arg = NULL; 3243 } 3244 } else { 3245 kmem_free(muip, sizeof (mac_unicast_impl_t)); 3246 } 3247 kmem_free(mrp, sizeof (*mrp)); 3248 } 3249 i_mac_perim_exit(mip); 3250 return (0); 3251 } 3252 3253 /* 3254 * Multicast add function invoked by MAC clients. 3255 */ 3256 int 3257 mac_multicast_add(mac_client_handle_t mch, const uint8_t *addr) 3258 { 3259 mac_client_impl_t *mcip = (mac_client_impl_t *)mch; 3260 mac_impl_t *mip = mcip->mci_mip; 3261 flow_entry_t *flent = mcip->mci_flent_list; 3262 flow_entry_t *prev_fe = NULL; 3263 uint16_t vid; 3264 int err = 0; 3265 3266 /* Verify the address is a valid multicast address */ 3267 if ((err = mip->mi_type->mt_ops.mtops_multicst_verify(addr, 3268 mip->mi_pdata)) != 0) 3269 return (err); 3270 3271 i_mac_perim_enter(mip); 3272 while (flent != NULL) { 3273 vid = i_mac_flow_vid(flent); 3274 3275 err = mac_bcast_add((mac_client_impl_t *)mch, addr, vid, 3276 MAC_ADDRTYPE_MULTICAST); 3277 if (err != 0) 3278 break; 3279 prev_fe = flent; 3280 flent = flent->fe_client_next; 3281 } 3282 3283 /* 3284 * If we failed adding, then undo all, rather than partial 3285 * success. 3286 */ 3287 if (flent != NULL && prev_fe != NULL) { 3288 flent = mcip->mci_flent_list; 3289 while (flent != prev_fe->fe_client_next) { 3290 vid = i_mac_flow_vid(flent); 3291 mac_bcast_delete((mac_client_impl_t *)mch, addr, vid); 3292 flent = flent->fe_client_next; 3293 } 3294 } 3295 i_mac_perim_exit(mip); 3296 return (err); 3297 } 3298 3299 /* 3300 * Multicast delete function invoked by MAC clients. 3301 */ 3302 void 3303 mac_multicast_remove(mac_client_handle_t mch, const uint8_t *addr) 3304 { 3305 mac_client_impl_t *mcip = (mac_client_impl_t *)mch; 3306 mac_impl_t *mip = mcip->mci_mip; 3307 flow_entry_t *flent; 3308 uint16_t vid; 3309 3310 i_mac_perim_enter(mip); 3311 for (flent = mcip->mci_flent_list; flent != NULL; 3312 flent = flent->fe_client_next) { 3313 vid = i_mac_flow_vid(flent); 3314 mac_bcast_delete((mac_client_impl_t *)mch, addr, vid); 3315 } 3316 i_mac_perim_exit(mip); 3317 } 3318 3319 /* 3320 * When a MAC client desires to capture packets on an interface, 3321 * it registers a promiscuous call back with mac_promisc_add(). 3322 * There are three types of promiscuous callbacks: 3323 * 3324 * * MAC_CLIENT_PROMISC_ALL 3325 * Captures all packets sent and received by the MAC client, 3326 * the physical interface, as well as all other MAC clients 3327 * defined on top of the same MAC. 3328 * 3329 * * MAC_CLIENT_PROMISC_FILTERED 3330 * Captures all packets sent and received by the MAC client, 3331 * plus all multicast traffic sent and received by the phyisical 3332 * interface and the other MAC clients. 3333 * 3334 * * MAC_CLIENT_PROMISC_MULTI 3335 * Captures all broadcast and multicast packets sent and 3336 * received by the MAC clients as well as the physical interface. 3337 * 3338 * In all cases, the underlying MAC is put in promiscuous mode. 3339 */ 3340 int 3341 mac_promisc_add(mac_client_handle_t mch, mac_client_promisc_type_t type, 3342 mac_rx_t fn, void *arg, mac_promisc_handle_t *mphp, uint16_t flags) 3343 { 3344 mac_client_impl_t *mcip = (mac_client_impl_t *)mch; 3345 mac_impl_t *mip = mcip->mci_mip; 3346 mac_promisc_impl_t *mpip; 3347 mac_cb_info_t *mcbi; 3348 int rc; 3349 3350 i_mac_perim_enter(mip); 3351 3352 if ((rc = mac_start((mac_handle_t)mip)) != 0) { 3353 i_mac_perim_exit(mip); 3354 return (rc); 3355 } 3356 3357 if ((mcip->mci_state_flags & MCIS_IS_VNIC) && 3358 type == MAC_CLIENT_PROMISC_ALL && 3359 (mcip->mci_protect_flags & MPT_FLAG_PROMISC_FILTERED)) { 3360 /* 3361 * The function is being invoked by the upper MAC client 3362 * of a VNIC. The VNIC should only see the traffic 3363 * it is entitled to. 3364 */ 3365 type = MAC_CLIENT_PROMISC_FILTERED; 3366 } 3367 3368 3369 /* 3370 * Turn on promiscuous mode for the underlying NIC. 3371 * This is needed even for filtered callbacks which 3372 * expect to receive all multicast traffic on the wire. 3373 * 3374 * Physical promiscuous mode should not be turned on if 3375 * MAC_PROMISC_FLAGS_NO_PHYS is set. 3376 */ 3377 if ((flags & MAC_PROMISC_FLAGS_NO_PHYS) == 0) { 3378 if ((rc = i_mac_promisc_set(mip, B_TRUE)) != 0) { 3379 mac_stop((mac_handle_t)mip); 3380 i_mac_perim_exit(mip); 3381 return (rc); 3382 } 3383 } 3384 3385 mpip = kmem_cache_alloc(mac_promisc_impl_cache, KM_SLEEP); 3386 3387 mpip->mpi_type = type; 3388 mpip->mpi_fn = fn; 3389 mpip->mpi_arg = arg; 3390 mpip->mpi_mcip = mcip; 3391 mpip->mpi_no_tx_loop = ((flags & MAC_PROMISC_FLAGS_NO_TX_LOOP) != 0); 3392 mpip->mpi_no_phys = ((flags & MAC_PROMISC_FLAGS_NO_PHYS) != 0); 3393 mpip->mpi_strip_vlan_tag = 3394 ((flags & MAC_PROMISC_FLAGS_VLAN_TAG_STRIP) != 0); 3395 mpip->mpi_no_copy = ((flags & MAC_PROMISC_FLAGS_NO_COPY) != 0); 3396 3397 mcbi = &mip->mi_promisc_cb_info; 3398 mutex_enter(mcbi->mcbi_lockp); 3399 3400 mac_callback_add(&mip->mi_promisc_cb_info, &mcip->mci_promisc_list, 3401 &mpip->mpi_mci_link); 3402 mac_callback_add(&mip->mi_promisc_cb_info, &mip->mi_promisc_list, 3403 &mpip->mpi_mi_link); 3404 3405 mutex_exit(mcbi->mcbi_lockp); 3406 3407 *mphp = (mac_promisc_handle_t)mpip; 3408 3409 if (mcip->mci_state_flags & MCIS_IS_VNIC) { 3410 mac_impl_t *umip = mcip->mci_upper_mip; 3411 3412 ASSERT(umip != NULL); 3413 mac_vnic_secondary_update(umip); 3414 } 3415 3416 i_mac_perim_exit(mip); 3417 3418 return (0); 3419 } 3420 3421 /* 3422 * Remove a multicast address previously aded through mac_promisc_add(). 3423 */ 3424 void 3425 mac_promisc_remove(mac_promisc_handle_t mph) 3426 { 3427 mac_promisc_impl_t *mpip = (mac_promisc_impl_t *)mph; 3428 mac_client_impl_t *mcip = mpip->mpi_mcip; 3429 mac_impl_t *mip = mcip->mci_mip; 3430 mac_cb_info_t *mcbi; 3431 int rv; 3432 3433 i_mac_perim_enter(mip); 3434 3435 /* 3436 * Even if the device can't be reset into normal mode, we still 3437 * need to clear the client promisc callbacks. The client may want 3438 * to close the mac end point and we can't have stale callbacks. 3439 */ 3440 if (!(mpip->mpi_no_phys)) { 3441 if ((rv = i_mac_promisc_set(mip, B_FALSE)) != 0) { 3442 cmn_err(CE_WARN, "%s: failed to switch OFF promiscuous" 3443 " mode because of error 0x%x", mip->mi_name, rv); 3444 } 3445 } 3446 mcbi = &mip->mi_promisc_cb_info; 3447 mutex_enter(mcbi->mcbi_lockp); 3448 if (mac_callback_remove(mcbi, &mip->mi_promisc_list, 3449 &mpip->mpi_mi_link)) { 3450 VERIFY(mac_callback_remove(&mip->mi_promisc_cb_info, 3451 &mcip->mci_promisc_list, &mpip->mpi_mci_link)); 3452 kmem_cache_free(mac_promisc_impl_cache, mpip); 3453 } else { 3454 mac_callback_remove_wait(&mip->mi_promisc_cb_info); 3455 } 3456 3457 if (mcip->mci_state_flags & MCIS_IS_VNIC) { 3458 mac_impl_t *umip = mcip->mci_upper_mip; 3459 3460 ASSERT(umip != NULL); 3461 mac_vnic_secondary_update(umip); 3462 } 3463 3464 mutex_exit(mcbi->mcbi_lockp); 3465 mac_stop((mac_handle_t)mip); 3466 3467 i_mac_perim_exit(mip); 3468 } 3469 3470 /* 3471 * Reference count the number of active Tx threads. MCI_TX_QUIESCE indicates 3472 * that a control operation wants to quiesce the Tx data flow in which case 3473 * we return an error. Holding any of the per cpu locks ensures that the 3474 * mci_tx_flag won't change. 3475 * 3476 * 'CPU' must be accessed just once and used to compute the index into the 3477 * percpu array, and that index must be used for the entire duration of the 3478 * packet send operation. Note that the thread may be preempted and run on 3479 * another cpu any time and so we can't use 'CPU' more than once for the 3480 * operation. 3481 */ 3482 #define MAC_TX_TRY_HOLD(mcip, mytx, error) \ 3483 { \ 3484 (error) = 0; \ 3485 (mytx) = &(mcip)->mci_tx_pcpu[CPU->cpu_seqid & mac_tx_percpu_cnt]; \ 3486 mutex_enter(&(mytx)->pcpu_tx_lock); \ 3487 if (!((mcip)->mci_tx_flag & MCI_TX_QUIESCE)) { \ 3488 (mytx)->pcpu_tx_refcnt++; \ 3489 } else { \ 3490 (error) = -1; \ 3491 } \ 3492 mutex_exit(&(mytx)->pcpu_tx_lock); \ 3493 } 3494 3495 /* 3496 * Release the reference. If needed, signal any control operation waiting 3497 * for Tx quiescence. The wait and signal are always done using the 3498 * mci_tx_pcpu[0]'s lock 3499 */ 3500 #define MAC_TX_RELE(mcip, mytx) { \ 3501 mutex_enter(&(mytx)->pcpu_tx_lock); \ 3502 if (--(mytx)->pcpu_tx_refcnt == 0 && \ 3503 (mcip)->mci_tx_flag & MCI_TX_QUIESCE) { \ 3504 mutex_exit(&(mytx)->pcpu_tx_lock); \ 3505 mutex_enter(&(mcip)->mci_tx_pcpu[0].pcpu_tx_lock); \ 3506 cv_signal(&(mcip)->mci_tx_cv); \ 3507 mutex_exit(&(mcip)->mci_tx_pcpu[0].pcpu_tx_lock); \ 3508 } else { \ 3509 mutex_exit(&(mytx)->pcpu_tx_lock); \ 3510 } \ 3511 } 3512 3513 /* 3514 * Send function invoked by MAC clients. 3515 */ 3516 mac_tx_cookie_t 3517 mac_tx(mac_client_handle_t mch, mblk_t *mp_chain, uintptr_t hint, 3518 uint16_t flag, mblk_t **ret_mp) 3519 { 3520 mac_tx_cookie_t cookie = 0; 3521 int error; 3522 mac_tx_percpu_t *mytx; 3523 mac_soft_ring_set_t *srs; 3524 flow_entry_t *flent; 3525 boolean_t is_subflow = B_FALSE; 3526 mac_client_impl_t *mcip = (mac_client_impl_t *)mch; 3527 mac_impl_t *mip = mcip->mci_mip; 3528 mac_srs_tx_t *srs_tx; 3529 3530 /* 3531 * Check whether the active Tx threads count is bumped already. 3532 */ 3533 if (!(flag & MAC_TX_NO_HOLD)) { 3534 MAC_TX_TRY_HOLD(mcip, mytx, error); 3535 if (error != 0) { 3536 freemsgchain(mp_chain); 3537 return (0); 3538 } 3539 } 3540 3541 /* 3542 * If mac protection is enabled, only the permissible packets will be 3543 * returned by mac_protect_check(). 3544 */ 3545 if ((mcip->mci_flent-> 3546 fe_resource_props.mrp_mask & MRP_PROTECT) != 0 && 3547 (mp_chain = mac_protect_check(mch, mp_chain)) == NULL) 3548 goto done; 3549 3550 if (mcip->mci_subflow_tab != NULL && 3551 mcip->mci_subflow_tab->ft_flow_count > 0 && 3552 mac_flow_lookup(mcip->mci_subflow_tab, mp_chain, 3553 FLOW_OUTBOUND, &flent) == 0) { 3554 /* 3555 * The main assumption here is that if in the event 3556 * we get a chain, all the packets will be classified 3557 * to the same Flow/SRS. If this changes for any 3558 * reason, the following logic should change as well. 3559 * I suppose the fanout_hint also assumes this . 3560 */ 3561 ASSERT(flent != NULL); 3562 is_subflow = B_TRUE; 3563 } else { 3564 flent = mcip->mci_flent; 3565 } 3566 3567 srs = flent->fe_tx_srs; 3568 /* 3569 * This is to avoid panics with PF_PACKET that can call mac_tx() 3570 * against an interface that is not capable of sending. A rewrite 3571 * of the mac datapath is required to remove this limitation. 3572 */ 3573 if (srs == NULL) { 3574 freemsgchain(mp_chain); 3575 goto done; 3576 } 3577 3578 srs_tx = &srs->srs_tx; 3579 if (srs_tx->st_mode == SRS_TX_DEFAULT && 3580 (srs->srs_state & SRS_ENQUEUED) == 0 && 3581 mip->mi_nactiveclients == 1 && mp_chain->b_next == NULL) { 3582 uint64_t obytes; 3583 3584 /* 3585 * Since dls always opens the underlying MAC, nclients equals 3586 * to 1 means that the only active client is dls itself acting 3587 * as a primary client of the MAC instance. Since dls will not 3588 * send tagged packets in that case, and dls is trusted to send 3589 * packets for its allowed VLAN(s), the VLAN tag insertion and 3590 * check is required only if nclients is greater than 1. 3591 */ 3592 if (mip->mi_nclients > 1) { 3593 if (MAC_VID_CHECK_NEEDED(mcip)) { 3594 int err = 0; 3595 3596 MAC_VID_CHECK(mcip, mp_chain, err); 3597 if (err != 0) { 3598 freemsg(mp_chain); 3599 mcip->mci_misc_stat.mms_txerrors++; 3600 goto done; 3601 } 3602 } 3603 if (MAC_TAG_NEEDED(mcip)) { 3604 mp_chain = mac_add_vlan_tag(mp_chain, 0, 3605 mac_client_vid(mch)); 3606 if (mp_chain == NULL) { 3607 mcip->mci_misc_stat.mms_txerrors++; 3608 goto done; 3609 } 3610 } 3611 } 3612 3613 obytes = (mp_chain->b_cont == NULL ? MBLKL(mp_chain) : 3614 msgdsize(mp_chain)); 3615 3616 MAC_TX(mip, srs_tx->st_arg2, mp_chain, mcip); 3617 if (mp_chain == NULL) { 3618 cookie = 0; 3619 SRS_TX_STAT_UPDATE(srs, opackets, 1); 3620 SRS_TX_STAT_UPDATE(srs, obytes, obytes); 3621 } else { 3622 mutex_enter(&srs->srs_lock); 3623 cookie = mac_tx_srs_no_desc(srs, mp_chain, 3624 flag, ret_mp); 3625 mutex_exit(&srs->srs_lock); 3626 } 3627 } else { 3628 cookie = srs_tx->st_func(srs, mp_chain, hint, flag, ret_mp); 3629 } 3630 3631 done: 3632 if (is_subflow) 3633 FLOW_REFRELE(flent); 3634 3635 if (!(flag & MAC_TX_NO_HOLD)) 3636 MAC_TX_RELE(mcip, mytx); 3637 3638 return (cookie); 3639 } 3640 3641 /* 3642 * mac_tx_is_blocked 3643 * 3644 * Given a cookie, it returns if the ring identified by the cookie is 3645 * flow-controlled or not. If NULL is passed in place of a cookie, 3646 * then it finds out if any of the underlying rings belonging to the 3647 * SRS is flow controlled or not and returns that status. 3648 */ 3649 /* ARGSUSED */ 3650 boolean_t 3651 mac_tx_is_flow_blocked(mac_client_handle_t mch, mac_tx_cookie_t cookie) 3652 { 3653 mac_client_impl_t *mcip = (mac_client_impl_t *)mch; 3654 mac_soft_ring_set_t *mac_srs; 3655 mac_soft_ring_t *sringp; 3656 boolean_t blocked = B_FALSE; 3657 mac_tx_percpu_t *mytx; 3658 int err; 3659 int i; 3660 3661 /* 3662 * Bump the reference count so that mac_srs won't be deleted. 3663 * If the client is currently quiesced and we failed to bump 3664 * the reference, return B_TRUE so that flow control stays 3665 * as enabled. 3666 * 3667 * Flow control will then be disabled once the client is no 3668 * longer quiesced. 3669 */ 3670 MAC_TX_TRY_HOLD(mcip, mytx, err); 3671 if (err != 0) 3672 return (B_TRUE); 3673 3674 if ((mac_srs = MCIP_TX_SRS(mcip)) == NULL) { 3675 MAC_TX_RELE(mcip, mytx); 3676 return (B_FALSE); 3677 } 3678 3679 mutex_enter(&mac_srs->srs_lock); 3680 /* 3681 * Only in the case of TX_FANOUT and TX_AGGR, the underlying 3682 * softring (s_ring_state) will have the HIWAT set. This is 3683 * the multiple Tx ring flow control case. For all other 3684 * case, SRS (srs_state) will store the condition. 3685 */ 3686 if (mac_srs->srs_tx.st_mode == SRS_TX_FANOUT || 3687 mac_srs->srs_tx.st_mode == SRS_TX_AGGR) { 3688 if (cookie != 0) { 3689 sringp = (mac_soft_ring_t *)cookie; 3690 mutex_enter(&sringp->s_ring_lock); 3691 if (sringp->s_ring_state & S_RING_TX_HIWAT) 3692 blocked = B_TRUE; 3693 mutex_exit(&sringp->s_ring_lock); 3694 } else { 3695 for (i = 0; i < mac_srs->srs_tx_ring_count; i++) { 3696 sringp = mac_srs->srs_tx_soft_rings[i]; 3697 mutex_enter(&sringp->s_ring_lock); 3698 if (sringp->s_ring_state & S_RING_TX_HIWAT) { 3699 blocked = B_TRUE; 3700 mutex_exit(&sringp->s_ring_lock); 3701 break; 3702 } 3703 mutex_exit(&sringp->s_ring_lock); 3704 } 3705 } 3706 } else { 3707 blocked = (mac_srs->srs_state & SRS_TX_HIWAT); 3708 } 3709 mutex_exit(&mac_srs->srs_lock); 3710 MAC_TX_RELE(mcip, mytx); 3711 return (blocked); 3712 } 3713 3714 /* 3715 * Check if the MAC client is the primary MAC client. 3716 */ 3717 boolean_t 3718 mac_is_primary_client(mac_client_impl_t *mcip) 3719 { 3720 return (mcip->mci_flags & MAC_CLIENT_FLAGS_PRIMARY); 3721 } 3722 3723 void 3724 mac_ioctl(mac_handle_t mh, queue_t *wq, mblk_t *bp) 3725 { 3726 mac_impl_t *mip = (mac_impl_t *)mh; 3727 int cmd = ((struct iocblk *)bp->b_rptr)->ioc_cmd; 3728 3729 if ((cmd == ND_GET && (mip->mi_callbacks->mc_callbacks & MC_GETPROP)) || 3730 (cmd == ND_SET && (mip->mi_callbacks->mc_callbacks & MC_SETPROP))) { 3731 /* 3732 * If ndd props were registered, call them. 3733 * Note that ndd ioctls are Obsolete 3734 */ 3735 mac_ndd_ioctl(mip, wq, bp); 3736 return; 3737 } 3738 3739 /* 3740 * Call the driver to handle the ioctl. The driver may not support 3741 * any ioctls, in which case we reply with a NAK on its behalf. 3742 */ 3743 if (mip->mi_callbacks->mc_callbacks & MC_IOCTL) 3744 mip->mi_ioctl(mip->mi_driver, wq, bp); 3745 else 3746 miocnak(wq, bp, 0, EINVAL); 3747 } 3748 3749 /* 3750 * Return the link state of the specified MAC instance. 3751 */ 3752 link_state_t 3753 mac_link_get(mac_handle_t mh) 3754 { 3755 return (((mac_impl_t *)mh)->mi_linkstate); 3756 } 3757 3758 /* 3759 * Add a mac client specified notification callback. Please see the comments 3760 * above mac_callback_add() for general information about mac callback 3761 * addition/deletion in the presence of mac callback list walkers 3762 */ 3763 mac_notify_handle_t 3764 mac_notify_add(mac_handle_t mh, mac_notify_t notify_fn, void *arg) 3765 { 3766 mac_impl_t *mip = (mac_impl_t *)mh; 3767 mac_notify_cb_t *mncb; 3768 mac_cb_info_t *mcbi; 3769 3770 /* 3771 * Allocate a notify callback structure, fill in the details and 3772 * use the mac callback list manipulation functions to chain into 3773 * the list of callbacks. 3774 */ 3775 mncb = kmem_zalloc(sizeof (mac_notify_cb_t), KM_SLEEP); 3776 mncb->mncb_fn = notify_fn; 3777 mncb->mncb_arg = arg; 3778 mncb->mncb_mip = mip; 3779 mncb->mncb_link.mcb_objp = mncb; 3780 mncb->mncb_link.mcb_objsize = sizeof (mac_notify_cb_t); 3781 mncb->mncb_link.mcb_flags = MCB_NOTIFY_CB_T; 3782 3783 mcbi = &mip->mi_notify_cb_info; 3784 3785 i_mac_perim_enter(mip); 3786 mutex_enter(mcbi->mcbi_lockp); 3787 3788 mac_callback_add(&mip->mi_notify_cb_info, &mip->mi_notify_cb_list, 3789 &mncb->mncb_link); 3790 3791 mutex_exit(mcbi->mcbi_lockp); 3792 i_mac_perim_exit(mip); 3793 return ((mac_notify_handle_t)mncb); 3794 } 3795 3796 void 3797 mac_notify_remove_wait(mac_handle_t mh) 3798 { 3799 mac_impl_t *mip = (mac_impl_t *)mh; 3800 mac_cb_info_t *mcbi = &mip->mi_notify_cb_info; 3801 3802 mutex_enter(mcbi->mcbi_lockp); 3803 mac_callback_remove_wait(&mip->mi_notify_cb_info); 3804 mutex_exit(mcbi->mcbi_lockp); 3805 } 3806 3807 /* 3808 * Remove a mac client specified notification callback 3809 */ 3810 int 3811 mac_notify_remove(mac_notify_handle_t mnh, boolean_t wait) 3812 { 3813 mac_notify_cb_t *mncb = (mac_notify_cb_t *)mnh; 3814 mac_impl_t *mip = mncb->mncb_mip; 3815 mac_cb_info_t *mcbi; 3816 int err = 0; 3817 3818 mcbi = &mip->mi_notify_cb_info; 3819 3820 i_mac_perim_enter(mip); 3821 mutex_enter(mcbi->mcbi_lockp); 3822 3823 ASSERT(mncb->mncb_link.mcb_objp == mncb); 3824 /* 3825 * If there aren't any list walkers, the remove would succeed 3826 * inline, else we wait for the deferred remove to complete 3827 */ 3828 if (mac_callback_remove(&mip->mi_notify_cb_info, 3829 &mip->mi_notify_cb_list, &mncb->mncb_link)) { 3830 kmem_free(mncb, sizeof (mac_notify_cb_t)); 3831 } else { 3832 err = EBUSY; 3833 } 3834 3835 mutex_exit(mcbi->mcbi_lockp); 3836 i_mac_perim_exit(mip); 3837 3838 /* 3839 * If we failed to remove the notification callback and "wait" is set 3840 * to be B_TRUE, wait for the callback to finish after we exit the 3841 * mac perimeter. 3842 */ 3843 if (err != 0 && wait) { 3844 mac_notify_remove_wait((mac_handle_t)mip); 3845 return (0); 3846 } 3847 3848 return (err); 3849 } 3850 3851 /* 3852 * Associate resource management callbacks with the specified MAC 3853 * clients. 3854 */ 3855 3856 void 3857 mac_resource_set_common(mac_client_handle_t mch, mac_resource_add_t add, 3858 mac_resource_remove_t remove, mac_resource_quiesce_t quiesce, 3859 mac_resource_restart_t restart, mac_resource_bind_t bind, 3860 void *arg) 3861 { 3862 mac_client_impl_t *mcip = (mac_client_impl_t *)mch; 3863 3864 mcip->mci_resource_add = add; 3865 mcip->mci_resource_remove = remove; 3866 mcip->mci_resource_quiesce = quiesce; 3867 mcip->mci_resource_restart = restart; 3868 mcip->mci_resource_bind = bind; 3869 mcip->mci_resource_arg = arg; 3870 } 3871 3872 void 3873 mac_resource_set(mac_client_handle_t mch, mac_resource_add_t add, void *arg) 3874 { 3875 /* update the 'resource_add' callback */ 3876 mac_resource_set_common(mch, add, NULL, NULL, NULL, NULL, arg); 3877 } 3878 3879 /* 3880 * Sets up the client resources and enable the polling interface over all the 3881 * SRS's and the soft rings of the client 3882 */ 3883 void 3884 mac_client_poll_enable(mac_client_handle_t mch) 3885 { 3886 mac_client_impl_t *mcip = (mac_client_impl_t *)mch; 3887 mac_soft_ring_set_t *mac_srs; 3888 flow_entry_t *flent; 3889 int i; 3890 3891 flent = mcip->mci_flent; 3892 ASSERT(flent != NULL); 3893 3894 mcip->mci_state_flags |= MCIS_CLIENT_POLL_CAPABLE; 3895 for (i = 0; i < flent->fe_rx_srs_cnt; i++) { 3896 mac_srs = (mac_soft_ring_set_t *)flent->fe_rx_srs[i]; 3897 ASSERT(mac_srs->srs_mcip == mcip); 3898 mac_srs_client_poll_enable(mcip, mac_srs); 3899 } 3900 } 3901 3902 /* 3903 * Tears down the client resources and disable the polling interface over all 3904 * the SRS's and the soft rings of the client 3905 */ 3906 void 3907 mac_client_poll_disable(mac_client_handle_t mch) 3908 { 3909 mac_client_impl_t *mcip = (mac_client_impl_t *)mch; 3910 mac_soft_ring_set_t *mac_srs; 3911 flow_entry_t *flent; 3912 int i; 3913 3914 flent = mcip->mci_flent; 3915 ASSERT(flent != NULL); 3916 3917 mcip->mci_state_flags &= ~MCIS_CLIENT_POLL_CAPABLE; 3918 for (i = 0; i < flent->fe_rx_srs_cnt; i++) { 3919 mac_srs = (mac_soft_ring_set_t *)flent->fe_rx_srs[i]; 3920 ASSERT(mac_srs->srs_mcip == mcip); 3921 mac_srs_client_poll_disable(mcip, mac_srs); 3922 } 3923 } 3924 3925 /* 3926 * Associate the CPUs specified by the given property with a MAC client. 3927 */ 3928 int 3929 mac_cpu_set(mac_client_handle_t mch, mac_resource_props_t *mrp) 3930 { 3931 mac_client_impl_t *mcip = (mac_client_impl_t *)mch; 3932 mac_impl_t *mip = mcip->mci_mip; 3933 int err = 0; 3934 3935 ASSERT(MAC_PERIM_HELD((mac_handle_t)mip)); 3936 3937 if ((err = mac_validate_props(mcip->mci_state_flags & MCIS_IS_VNIC ? 3938 mcip->mci_upper_mip : mip, mrp)) != 0) { 3939 return (err); 3940 } 3941 if (MCIP_DATAPATH_SETUP(mcip)) 3942 mac_flow_modify(mip->mi_flow_tab, mcip->mci_flent, mrp); 3943 3944 mac_update_resources(mrp, MCIP_RESOURCE_PROPS(mcip), B_FALSE); 3945 return (0); 3946 } 3947 3948 /* 3949 * Apply the specified properties to the specified MAC client. 3950 */ 3951 int 3952 mac_client_set_resources(mac_client_handle_t mch, mac_resource_props_t *mrp) 3953 { 3954 mac_client_impl_t *mcip = (mac_client_impl_t *)mch; 3955 mac_impl_t *mip = mcip->mci_mip; 3956 int err = 0; 3957 3958 i_mac_perim_enter(mip); 3959 3960 if ((mrp->mrp_mask & MRP_MAXBW) || (mrp->mrp_mask & MRP_PRIORITY)) { 3961 err = mac_resource_ctl_set(mch, mrp); 3962 if (err != 0) 3963 goto done; 3964 } 3965 3966 if (mrp->mrp_mask & (MRP_CPUS|MRP_POOL)) { 3967 err = mac_cpu_set(mch, mrp); 3968 if (err != 0) 3969 goto done; 3970 } 3971 3972 if (mrp->mrp_mask & MRP_PROTECT) { 3973 err = mac_protect_set(mch, mrp); 3974 if (err != 0) 3975 goto done; 3976 } 3977 3978 if ((mrp->mrp_mask & MRP_RX_RINGS) || (mrp->mrp_mask & MRP_TX_RINGS)) 3979 err = mac_resource_ctl_set(mch, mrp); 3980 3981 done: 3982 i_mac_perim_exit(mip); 3983 return (err); 3984 } 3985 3986 /* 3987 * Return the properties currently associated with the specified MAC client. 3988 */ 3989 void 3990 mac_client_get_resources(mac_client_handle_t mch, mac_resource_props_t *mrp) 3991 { 3992 mac_client_impl_t *mcip = (mac_client_impl_t *)mch; 3993 mac_resource_props_t *mcip_mrp = MCIP_RESOURCE_PROPS(mcip); 3994 3995 bcopy(mcip_mrp, mrp, sizeof (mac_resource_props_t)); 3996 } 3997 3998 /* 3999 * Return the effective properties currently associated with the specified 4000 * MAC client. 4001 */ 4002 void 4003 mac_client_get_effective_resources(mac_client_handle_t mch, 4004 mac_resource_props_t *mrp) 4005 { 4006 mac_client_impl_t *mcip = (mac_client_impl_t *)mch; 4007 mac_resource_props_t *mcip_mrp = MCIP_EFFECTIVE_PROPS(mcip); 4008 4009 bcopy(mcip_mrp, mrp, sizeof (mac_resource_props_t)); 4010 } 4011 4012 /* 4013 * Pass a copy of the specified packet to the promiscuous callbacks 4014 * of the specified MAC. 4015 * 4016 * If sender is NULL, the function is being invoked for a packet chain 4017 * received from the wire. If sender is non-NULL, it points to 4018 * the MAC client from which the packet is being sent. 4019 * 4020 * The packets are distributed to the promiscuous callbacks as follows: 4021 * 4022 * - all packets are sent to the MAC_CLIENT_PROMISC_ALL callbacks 4023 * - all broadcast and multicast packets are sent to the 4024 * MAC_CLIENT_PROMISC_FILTER and MAC_CLIENT_PROMISC_MULTI. 4025 * 4026 * The unicast packets of MAC_CLIENT_PROMISC_FILTER callbacks are dispatched 4027 * after classification by mac_rx_deliver(). 4028 */ 4029 4030 static void 4031 mac_promisc_dispatch_one(mac_promisc_impl_t *mpip, mblk_t *mp, 4032 boolean_t loopback) 4033 { 4034 mblk_t *mp_copy, *mp_next; 4035 4036 if (!mpip->mpi_no_copy || mpip->mpi_strip_vlan_tag) { 4037 mp_copy = copymsg(mp); 4038 if (mp_copy == NULL) 4039 return; 4040 4041 if (mpip->mpi_strip_vlan_tag) { 4042 mp_copy = mac_strip_vlan_tag_chain(mp_copy); 4043 if (mp_copy == NULL) 4044 return; 4045 } 4046 mp_next = NULL; 4047 } else { 4048 mp_copy = mp; 4049 mp_next = mp->b_next; 4050 } 4051 mp_copy->b_next = NULL; 4052 4053 mpip->mpi_fn(mpip->mpi_arg, NULL, mp_copy, loopback); 4054 if (mp_copy == mp) 4055 mp->b_next = mp_next; 4056 } 4057 4058 /* 4059 * Return the VID of a packet. Zero if the packet is not tagged. 4060 */ 4061 static uint16_t 4062 mac_ether_vid(mblk_t *mp) 4063 { 4064 struct ether_header *eth = (struct ether_header *)mp->b_rptr; 4065 4066 if (ntohs(eth->ether_type) == ETHERTYPE_VLAN) { 4067 struct ether_vlan_header *t_evhp = 4068 (struct ether_vlan_header *)mp->b_rptr; 4069 return (VLAN_ID(ntohs(t_evhp->ether_tci))); 4070 } 4071 4072 return (0); 4073 } 4074 4075 /* 4076 * Return whether the specified packet contains a multicast or broadcast 4077 * destination MAC address. 4078 */ 4079 static boolean_t 4080 mac_is_mcast(mac_impl_t *mip, mblk_t *mp) 4081 { 4082 mac_header_info_t hdr_info; 4083 4084 if (mac_header_info((mac_handle_t)mip, mp, &hdr_info) != 0) 4085 return (B_FALSE); 4086 return ((hdr_info.mhi_dsttype == MAC_ADDRTYPE_BROADCAST) || 4087 (hdr_info.mhi_dsttype == MAC_ADDRTYPE_MULTICAST)); 4088 } 4089 4090 /* 4091 * Send a copy of an mblk chain to the MAC clients of the specified MAC. 4092 * "sender" points to the sender MAC client for outbound packets, and 4093 * is set to NULL for inbound packets. 4094 */ 4095 void 4096 mac_promisc_dispatch(mac_impl_t *mip, mblk_t *mp_chain, 4097 mac_client_impl_t *sender) 4098 { 4099 mac_promisc_impl_t *mpip; 4100 mac_cb_t *mcb; 4101 mblk_t *mp; 4102 boolean_t is_mcast, is_sender; 4103 4104 MAC_PROMISC_WALKER_INC(mip); 4105 for (mp = mp_chain; mp != NULL; mp = mp->b_next) { 4106 is_mcast = mac_is_mcast(mip, mp); 4107 /* send packet to interested callbacks */ 4108 for (mcb = mip->mi_promisc_list; mcb != NULL; 4109 mcb = mcb->mcb_nextp) { 4110 mpip = (mac_promisc_impl_t *)mcb->mcb_objp; 4111 is_sender = (mpip->mpi_mcip == sender); 4112 4113 if (is_sender && mpip->mpi_no_tx_loop) 4114 /* 4115 * The sender doesn't want to receive 4116 * copies of the packets it sends. 4117 */ 4118 continue; 4119 4120 /* this client doesn't need any packets (bridge) */ 4121 if (mpip->mpi_fn == NULL) 4122 continue; 4123 4124 /* 4125 * For an ethernet MAC, don't displatch a multicast 4126 * packet to a non-PROMISC_ALL callbacks unless the VID 4127 * of the packet matches the VID of the client. 4128 */ 4129 if (is_mcast && 4130 mpip->mpi_type != MAC_CLIENT_PROMISC_ALL && 4131 !mac_client_check_flow_vid(mpip->mpi_mcip, 4132 mac_ether_vid(mp))) 4133 continue; 4134 4135 if (is_sender || 4136 mpip->mpi_type == MAC_CLIENT_PROMISC_ALL || 4137 is_mcast) 4138 mac_promisc_dispatch_one(mpip, mp, is_sender); 4139 } 4140 } 4141 MAC_PROMISC_WALKER_DCR(mip); 4142 } 4143 4144 void 4145 mac_promisc_client_dispatch(mac_client_impl_t *mcip, mblk_t *mp_chain) 4146 { 4147 mac_impl_t *mip = mcip->mci_mip; 4148 mac_promisc_impl_t *mpip; 4149 boolean_t is_mcast; 4150 mblk_t *mp; 4151 mac_cb_t *mcb; 4152 4153 /* 4154 * The unicast packets for the MAC client still 4155 * need to be delivered to the MAC_CLIENT_PROMISC_FILTERED 4156 * promiscuous callbacks. The broadcast and multicast 4157 * packets were delivered from mac_rx(). 4158 */ 4159 MAC_PROMISC_WALKER_INC(mip); 4160 for (mp = mp_chain; mp != NULL; mp = mp->b_next) { 4161 is_mcast = mac_is_mcast(mip, mp); 4162 for (mcb = mcip->mci_promisc_list; mcb != NULL; 4163 mcb = mcb->mcb_nextp) { 4164 mpip = (mac_promisc_impl_t *)mcb->mcb_objp; 4165 if (mpip->mpi_type == MAC_CLIENT_PROMISC_FILTERED && 4166 !is_mcast) { 4167 mac_promisc_dispatch_one(mpip, mp, B_FALSE); 4168 } 4169 } 4170 } 4171 MAC_PROMISC_WALKER_DCR(mip); 4172 } 4173 4174 /* 4175 * Return the margin value currently assigned to the specified MAC instance. 4176 */ 4177 void 4178 mac_margin_get(mac_handle_t mh, uint32_t *marginp) 4179 { 4180 mac_impl_t *mip = (mac_impl_t *)mh; 4181 4182 rw_enter(&(mip->mi_rw_lock), RW_READER); 4183 *marginp = mip->mi_margin; 4184 rw_exit(&(mip->mi_rw_lock)); 4185 } 4186 4187 /* 4188 * mac_info_get() is used for retrieving the mac_info when a DL_INFO_REQ is 4189 * issued before a DL_ATTACH_REQ. we walk the i_mac_impl_hash table and find 4190 * the first mac_impl_t with a matching driver name; then we copy its mac_info_t 4191 * to the caller. we do all this with i_mac_impl_lock held so the mac_impl_t 4192 * cannot disappear while we are accessing it. 4193 */ 4194 typedef struct i_mac_info_state_s { 4195 const char *mi_name; 4196 mac_info_t *mi_infop; 4197 } i_mac_info_state_t; 4198 4199 /*ARGSUSED*/ 4200 static uint_t 4201 i_mac_info_walker(mod_hash_key_t key, mod_hash_val_t *val, void *arg) 4202 { 4203 i_mac_info_state_t *statep = arg; 4204 mac_impl_t *mip = (mac_impl_t *)val; 4205 4206 if (mip->mi_state_flags & MIS_DISABLED) 4207 return (MH_WALK_CONTINUE); 4208 4209 if (strcmp(statep->mi_name, 4210 ddi_driver_name(mip->mi_dip)) != 0) 4211 return (MH_WALK_CONTINUE); 4212 4213 statep->mi_infop = &mip->mi_info; 4214 return (MH_WALK_TERMINATE); 4215 } 4216 4217 boolean_t 4218 mac_info_get(const char *name, mac_info_t *minfop) 4219 { 4220 i_mac_info_state_t state; 4221 4222 rw_enter(&i_mac_impl_lock, RW_READER); 4223 state.mi_name = name; 4224 state.mi_infop = NULL; 4225 mod_hash_walk(i_mac_impl_hash, i_mac_info_walker, &state); 4226 if (state.mi_infop == NULL) { 4227 rw_exit(&i_mac_impl_lock); 4228 return (B_FALSE); 4229 } 4230 *minfop = *state.mi_infop; 4231 rw_exit(&i_mac_impl_lock); 4232 return (B_TRUE); 4233 } 4234 4235 /* 4236 * To get the capabilities that MAC layer cares about, such as rings, factory 4237 * mac address, vnic or not, it should directly invoke this function. If the 4238 * link is part of a bridge, then the only "capability" it has is the inability 4239 * to do zero copy. 4240 */ 4241 boolean_t 4242 i_mac_capab_get(mac_handle_t mh, mac_capab_t cap, void *cap_data) 4243 { 4244 mac_impl_t *mip = (mac_impl_t *)mh; 4245 4246 if (mip->mi_bridge_link != NULL) 4247 return (cap == MAC_CAPAB_NO_ZCOPY); 4248 else if (mip->mi_callbacks->mc_callbacks & MC_GETCAPAB) 4249 return (mip->mi_getcapab(mip->mi_driver, cap, cap_data)); 4250 else 4251 return (B_FALSE); 4252 } 4253 4254 /* 4255 * Capability query function. If number of active mac clients is greater than 4256 * 1, only limited capabilities can be advertised to the caller no matter the 4257 * driver has certain capability or not. Else, we query the driver to get the 4258 * capability. 4259 */ 4260 boolean_t 4261 mac_capab_get(mac_handle_t mh, mac_capab_t cap, void *cap_data) 4262 { 4263 mac_impl_t *mip = (mac_impl_t *)mh; 4264 4265 /* 4266 * if mi_nactiveclients > 1, only MAC_CAPAB_LEGACY, MAC_CAPAB_HCKSUM, 4267 * MAC_CAPAB_NO_NATIVEVLAN and MAC_CAPAB_NO_ZCOPY can be advertised. 4268 */ 4269 if (mip->mi_nactiveclients > 1) { 4270 switch (cap) { 4271 case MAC_CAPAB_NO_ZCOPY: 4272 return (B_TRUE); 4273 case MAC_CAPAB_LEGACY: 4274 case MAC_CAPAB_HCKSUM: 4275 case MAC_CAPAB_NO_NATIVEVLAN: 4276 break; 4277 default: 4278 return (B_FALSE); 4279 } 4280 } 4281 4282 /* else get capab from driver */ 4283 return (i_mac_capab_get(mh, cap, cap_data)); 4284 } 4285 4286 boolean_t 4287 mac_sap_verify(mac_handle_t mh, uint32_t sap, uint32_t *bind_sap) 4288 { 4289 mac_impl_t *mip = (mac_impl_t *)mh; 4290 4291 return (mip->mi_type->mt_ops.mtops_sap_verify(sap, bind_sap, 4292 mip->mi_pdata)); 4293 } 4294 4295 mblk_t * 4296 mac_header(mac_handle_t mh, const uint8_t *daddr, uint32_t sap, mblk_t *payload, 4297 size_t extra_len) 4298 { 4299 mac_impl_t *mip = (mac_impl_t *)mh; 4300 const uint8_t *hdr_daddr; 4301 4302 /* 4303 * If the MAC is point-to-point with a fixed destination address, then 4304 * we must always use that destination in the MAC header. 4305 */ 4306 hdr_daddr = (mip->mi_dstaddr_set ? mip->mi_dstaddr : daddr); 4307 return (mip->mi_type->mt_ops.mtops_header(mip->mi_addr, hdr_daddr, sap, 4308 mip->mi_pdata, payload, extra_len)); 4309 } 4310 4311 int 4312 mac_header_info(mac_handle_t mh, mblk_t *mp, mac_header_info_t *mhip) 4313 { 4314 mac_impl_t *mip = (mac_impl_t *)mh; 4315 4316 return (mip->mi_type->mt_ops.mtops_header_info(mp, mip->mi_pdata, 4317 mhip)); 4318 } 4319 4320 int 4321 mac_vlan_header_info(mac_handle_t mh, mblk_t *mp, mac_header_info_t *mhip) 4322 { 4323 mac_impl_t *mip = (mac_impl_t *)mh; 4324 boolean_t is_ethernet = (mip->mi_info.mi_media == DL_ETHER); 4325 int err = 0; 4326 4327 /* 4328 * Packets should always be at least 16 bit aligned. 4329 */ 4330 ASSERT(IS_P2ALIGNED(mp->b_rptr, sizeof (uint16_t))); 4331 4332 if ((err = mac_header_info(mh, mp, mhip)) != 0) 4333 return (err); 4334 4335 /* 4336 * If this is a VLAN-tagged Ethernet packet, then the SAP in the 4337 * mac_header_info_t as returned by mac_header_info() is 4338 * ETHERTYPE_VLAN. We need to grab the ethertype from the VLAN header. 4339 */ 4340 if (is_ethernet && (mhip->mhi_bindsap == ETHERTYPE_VLAN)) { 4341 struct ether_vlan_header *evhp; 4342 uint16_t sap; 4343 mblk_t *tmp = NULL; 4344 size_t size; 4345 4346 size = sizeof (struct ether_vlan_header); 4347 if (MBLKL(mp) < size) { 4348 /* 4349 * Pullup the message in order to get the MAC header 4350 * infomation. Note that this is a read-only function, 4351 * we keep the input packet intact. 4352 */ 4353 if ((tmp = msgpullup(mp, size)) == NULL) 4354 return (EINVAL); 4355 4356 mp = tmp; 4357 } 4358 evhp = (struct ether_vlan_header *)mp->b_rptr; 4359 sap = ntohs(evhp->ether_type); 4360 (void) mac_sap_verify(mh, sap, &mhip->mhi_bindsap); 4361 mhip->mhi_hdrsize = sizeof (struct ether_vlan_header); 4362 mhip->mhi_tci = ntohs(evhp->ether_tci); 4363 mhip->mhi_istagged = B_TRUE; 4364 freemsg(tmp); 4365 4366 if (VLAN_CFI(mhip->mhi_tci) != ETHER_CFI) 4367 return (EINVAL); 4368 } else { 4369 mhip->mhi_istagged = B_FALSE; 4370 mhip->mhi_tci = 0; 4371 } 4372 4373 return (0); 4374 } 4375 4376 mblk_t * 4377 mac_header_cook(mac_handle_t mh, mblk_t *mp) 4378 { 4379 mac_impl_t *mip = (mac_impl_t *)mh; 4380 4381 if (mip->mi_type->mt_ops.mtops_ops & MTOPS_HEADER_COOK) { 4382 if (DB_REF(mp) > 1) { 4383 mblk_t *newmp = copymsg(mp); 4384 if (newmp == NULL) 4385 return (NULL); 4386 freemsg(mp); 4387 mp = newmp; 4388 } 4389 return (mip->mi_type->mt_ops.mtops_header_cook(mp, 4390 mip->mi_pdata)); 4391 } 4392 return (mp); 4393 } 4394 4395 mblk_t * 4396 mac_header_uncook(mac_handle_t mh, mblk_t *mp) 4397 { 4398 mac_impl_t *mip = (mac_impl_t *)mh; 4399 4400 if (mip->mi_type->mt_ops.mtops_ops & MTOPS_HEADER_UNCOOK) { 4401 if (DB_REF(mp) > 1) { 4402 mblk_t *newmp = copymsg(mp); 4403 if (newmp == NULL) 4404 return (NULL); 4405 freemsg(mp); 4406 mp = newmp; 4407 } 4408 return (mip->mi_type->mt_ops.mtops_header_uncook(mp, 4409 mip->mi_pdata)); 4410 } 4411 return (mp); 4412 } 4413 4414 uint_t 4415 mac_addr_len(mac_handle_t mh) 4416 { 4417 mac_impl_t *mip = (mac_impl_t *)mh; 4418 4419 return (mip->mi_type->mt_addr_length); 4420 } 4421 4422 /* True if a MAC is a VNIC */ 4423 boolean_t 4424 mac_is_vnic(mac_handle_t mh) 4425 { 4426 return (((mac_impl_t *)mh)->mi_state_flags & MIS_IS_VNIC); 4427 } 4428 4429 mac_handle_t 4430 mac_get_lower_mac_handle(mac_handle_t mh) 4431 { 4432 mac_impl_t *mip = (mac_impl_t *)mh; 4433 4434 ASSERT(mac_is_vnic(mh)); 4435 return (((vnic_t *)mip->mi_driver)->vn_lower_mh); 4436 } 4437 4438 boolean_t 4439 mac_is_vnic_primary(mac_handle_t mh) 4440 { 4441 mac_impl_t *mip = (mac_impl_t *)mh; 4442 4443 ASSERT(mac_is_vnic(mh)); 4444 return (((vnic_t *)mip->mi_driver)->vn_addr_type == 4445 VNIC_MAC_ADDR_TYPE_PRIMARY); 4446 } 4447 4448 void 4449 mac_update_resources(mac_resource_props_t *nmrp, mac_resource_props_t *cmrp, 4450 boolean_t is_user_flow) 4451 { 4452 if (nmrp != NULL && cmrp != NULL) { 4453 if (nmrp->mrp_mask & MRP_PRIORITY) { 4454 if (nmrp->mrp_priority == MPL_RESET) { 4455 cmrp->mrp_mask &= ~MRP_PRIORITY; 4456 if (is_user_flow) { 4457 cmrp->mrp_priority = 4458 MPL_SUBFLOW_DEFAULT; 4459 } else { 4460 cmrp->mrp_priority = MPL_LINK_DEFAULT; 4461 } 4462 } else { 4463 cmrp->mrp_mask |= MRP_PRIORITY; 4464 cmrp->mrp_priority = nmrp->mrp_priority; 4465 } 4466 } 4467 if (nmrp->mrp_mask & MRP_MAXBW) { 4468 if (nmrp->mrp_maxbw == MRP_MAXBW_RESETVAL) { 4469 cmrp->mrp_mask &= ~MRP_MAXBW; 4470 cmrp->mrp_maxbw = 0; 4471 } else { 4472 cmrp->mrp_mask |= MRP_MAXBW; 4473 cmrp->mrp_maxbw = nmrp->mrp_maxbw; 4474 } 4475 } 4476 if (nmrp->mrp_mask & MRP_CPUS) 4477 MAC_COPY_CPUS(nmrp, cmrp); 4478 4479 if (nmrp->mrp_mask & MRP_POOL) { 4480 if (strlen(nmrp->mrp_pool) == 0) { 4481 cmrp->mrp_mask &= ~MRP_POOL; 4482 bzero(cmrp->mrp_pool, sizeof (cmrp->mrp_pool)); 4483 } else { 4484 cmrp->mrp_mask |= MRP_POOL; 4485 (void) strncpy(cmrp->mrp_pool, nmrp->mrp_pool, 4486 sizeof (cmrp->mrp_pool)); 4487 } 4488 4489 } 4490 4491 if (nmrp->mrp_mask & MRP_PROTECT) 4492 mac_protect_update(nmrp, cmrp); 4493 4494 /* 4495 * Update the rings specified. 4496 */ 4497 if (nmrp->mrp_mask & MRP_RX_RINGS) { 4498 if (nmrp->mrp_mask & MRP_RINGS_RESET) { 4499 cmrp->mrp_mask &= ~MRP_RX_RINGS; 4500 if (cmrp->mrp_mask & MRP_RXRINGS_UNSPEC) 4501 cmrp->mrp_mask &= ~MRP_RXRINGS_UNSPEC; 4502 cmrp->mrp_nrxrings = 0; 4503 } else { 4504 cmrp->mrp_mask |= MRP_RX_RINGS; 4505 cmrp->mrp_nrxrings = nmrp->mrp_nrxrings; 4506 } 4507 } 4508 if (nmrp->mrp_mask & MRP_TX_RINGS) { 4509 if (nmrp->mrp_mask & MRP_RINGS_RESET) { 4510 cmrp->mrp_mask &= ~MRP_TX_RINGS; 4511 if (cmrp->mrp_mask & MRP_TXRINGS_UNSPEC) 4512 cmrp->mrp_mask &= ~MRP_TXRINGS_UNSPEC; 4513 cmrp->mrp_ntxrings = 0; 4514 } else { 4515 cmrp->mrp_mask |= MRP_TX_RINGS; 4516 cmrp->mrp_ntxrings = nmrp->mrp_ntxrings; 4517 } 4518 } 4519 if (nmrp->mrp_mask & MRP_RXRINGS_UNSPEC) 4520 cmrp->mrp_mask |= MRP_RXRINGS_UNSPEC; 4521 else if (cmrp->mrp_mask & MRP_RXRINGS_UNSPEC) 4522 cmrp->mrp_mask &= ~MRP_RXRINGS_UNSPEC; 4523 4524 if (nmrp->mrp_mask & MRP_TXRINGS_UNSPEC) 4525 cmrp->mrp_mask |= MRP_TXRINGS_UNSPEC; 4526 else if (cmrp->mrp_mask & MRP_TXRINGS_UNSPEC) 4527 cmrp->mrp_mask &= ~MRP_TXRINGS_UNSPEC; 4528 } 4529 } 4530 4531 /* 4532 * i_mac_set_resources: 4533 * 4534 * This routine associates properties with the primary MAC client of 4535 * the specified MAC instance. 4536 * - Cache the properties in mac_impl_t 4537 * - Apply the properties to the primary MAC client if exists 4538 */ 4539 int 4540 i_mac_set_resources(mac_handle_t mh, mac_resource_props_t *mrp) 4541 { 4542 mac_impl_t *mip = (mac_impl_t *)mh; 4543 mac_client_impl_t *mcip; 4544 int err = 0; 4545 uint32_t resmask, newresmask; 4546 mac_resource_props_t *tmrp, *umrp; 4547 4548 ASSERT(MAC_PERIM_HELD((mac_handle_t)mip)); 4549 4550 err = mac_validate_props(mip, mrp); 4551 if (err != 0) 4552 return (err); 4553 4554 umrp = kmem_zalloc(sizeof (*umrp), KM_SLEEP); 4555 bcopy(&mip->mi_resource_props, umrp, sizeof (*umrp)); 4556 resmask = umrp->mrp_mask; 4557 mac_update_resources(mrp, umrp, B_FALSE); 4558 newresmask = umrp->mrp_mask; 4559 4560 if (resmask == 0 && newresmask != 0) { 4561 /* 4562 * Bandwidth, priority, cpu or pool link properties configured, 4563 * must disable fastpath. 4564 */ 4565 if ((err = mac_fastpath_disable((mac_handle_t)mip)) != 0) { 4566 kmem_free(umrp, sizeof (*umrp)); 4567 return (err); 4568 } 4569 } 4570 4571 /* 4572 * Since bind_cpu may be modified by mac_client_set_resources() 4573 * we use a copy of bind_cpu and finally cache bind_cpu in mip. 4574 * This allows us to cache only user edits in mip. 4575 */ 4576 tmrp = kmem_zalloc(sizeof (*tmrp), KM_SLEEP); 4577 bcopy(mrp, tmrp, sizeof (*tmrp)); 4578 mcip = mac_primary_client_handle(mip); 4579 if (mcip != NULL && (mcip->mci_state_flags & MCIS_IS_AGGR_PORT) == 0) { 4580 err = mac_client_set_resources((mac_client_handle_t)mcip, tmrp); 4581 } else if ((mrp->mrp_mask & MRP_RX_RINGS || 4582 mrp->mrp_mask & MRP_TX_RINGS)) { 4583 mac_client_impl_t *vmcip; 4584 4585 /* 4586 * If the primary is not up, we need to check if there 4587 * are any VLANs on this primary. If there are then 4588 * we need to set this property on the VLANs since 4589 * VLANs follow the primary they are based on. Just 4590 * look for the first VLAN and change its properties, 4591 * all the other VLANs should be in the same group. 4592 */ 4593 for (vmcip = mip->mi_clients_list; vmcip != NULL; 4594 vmcip = vmcip->mci_client_next) { 4595 if ((vmcip->mci_flent->fe_type & FLOW_PRIMARY_MAC) && 4596 mac_client_vid((mac_client_handle_t)vmcip) != 4597 VLAN_ID_NONE) { 4598 break; 4599 } 4600 } 4601 if (vmcip != NULL) { 4602 mac_resource_props_t *omrp; 4603 mac_resource_props_t *vmrp; 4604 4605 omrp = kmem_zalloc(sizeof (*omrp), KM_SLEEP); 4606 bcopy(MCIP_RESOURCE_PROPS(vmcip), omrp, sizeof (*omrp)); 4607 /* 4608 * We dont' call mac_update_resources since we 4609 * want to take only the ring properties and 4610 * not all the properties that may have changed. 4611 */ 4612 vmrp = MCIP_RESOURCE_PROPS(vmcip); 4613 if (mrp->mrp_mask & MRP_RX_RINGS) { 4614 if (mrp->mrp_mask & MRP_RINGS_RESET) { 4615 vmrp->mrp_mask &= ~MRP_RX_RINGS; 4616 if (vmrp->mrp_mask & 4617 MRP_RXRINGS_UNSPEC) { 4618 vmrp->mrp_mask &= 4619 ~MRP_RXRINGS_UNSPEC; 4620 } 4621 vmrp->mrp_nrxrings = 0; 4622 } else { 4623 vmrp->mrp_mask |= MRP_RX_RINGS; 4624 vmrp->mrp_nrxrings = mrp->mrp_nrxrings; 4625 } 4626 } 4627 if (mrp->mrp_mask & MRP_TX_RINGS) { 4628 if (mrp->mrp_mask & MRP_RINGS_RESET) { 4629 vmrp->mrp_mask &= ~MRP_TX_RINGS; 4630 if (vmrp->mrp_mask & 4631 MRP_TXRINGS_UNSPEC) { 4632 vmrp->mrp_mask &= 4633 ~MRP_TXRINGS_UNSPEC; 4634 } 4635 vmrp->mrp_ntxrings = 0; 4636 } else { 4637 vmrp->mrp_mask |= MRP_TX_RINGS; 4638 vmrp->mrp_ntxrings = mrp->mrp_ntxrings; 4639 } 4640 } 4641 if (mrp->mrp_mask & MRP_RXRINGS_UNSPEC) 4642 vmrp->mrp_mask |= MRP_RXRINGS_UNSPEC; 4643 4644 if (mrp->mrp_mask & MRP_TXRINGS_UNSPEC) 4645 vmrp->mrp_mask |= MRP_TXRINGS_UNSPEC; 4646 4647 if ((err = mac_client_set_rings_prop(vmcip, mrp, 4648 omrp)) != 0) { 4649 bcopy(omrp, MCIP_RESOURCE_PROPS(vmcip), 4650 sizeof (*omrp)); 4651 } else { 4652 mac_set_prim_vlan_rings(mip, vmrp); 4653 } 4654 kmem_free(omrp, sizeof (*omrp)); 4655 } 4656 } 4657 4658 /* Only update the values if mac_client_set_resources succeeded */ 4659 if (err == 0) { 4660 bcopy(umrp, &mip->mi_resource_props, sizeof (*umrp)); 4661 /* 4662 * If bandwidth, priority or cpu link properties cleared, 4663 * renable fastpath. 4664 */ 4665 if (resmask != 0 && newresmask == 0) 4666 mac_fastpath_enable((mac_handle_t)mip); 4667 } else if (resmask == 0 && newresmask != 0) { 4668 mac_fastpath_enable((mac_handle_t)mip); 4669 } 4670 kmem_free(tmrp, sizeof (*tmrp)); 4671 kmem_free(umrp, sizeof (*umrp)); 4672 return (err); 4673 } 4674 4675 int 4676 mac_set_resources(mac_handle_t mh, mac_resource_props_t *mrp) 4677 { 4678 int err; 4679 4680 i_mac_perim_enter((mac_impl_t *)mh); 4681 err = i_mac_set_resources(mh, mrp); 4682 i_mac_perim_exit((mac_impl_t *)mh); 4683 return (err); 4684 } 4685 4686 /* 4687 * Get the properties cached for the specified MAC instance. 4688 */ 4689 void 4690 mac_get_resources(mac_handle_t mh, mac_resource_props_t *mrp) 4691 { 4692 mac_impl_t *mip = (mac_impl_t *)mh; 4693 mac_client_impl_t *mcip; 4694 4695 mcip = mac_primary_client_handle(mip); 4696 if (mcip != NULL) { 4697 mac_client_get_resources((mac_client_handle_t)mcip, mrp); 4698 return; 4699 } 4700 bcopy(&mip->mi_resource_props, mrp, sizeof (mac_resource_props_t)); 4701 } 4702 4703 /* 4704 * Get the effective properties from the primary client of the 4705 * specified MAC instance. 4706 */ 4707 void 4708 mac_get_effective_resources(mac_handle_t mh, mac_resource_props_t *mrp) 4709 { 4710 mac_impl_t *mip = (mac_impl_t *)mh; 4711 mac_client_impl_t *mcip; 4712 4713 mcip = mac_primary_client_handle(mip); 4714 if (mcip != NULL) { 4715 mac_client_get_effective_resources((mac_client_handle_t)mcip, 4716 mrp); 4717 return; 4718 } 4719 bzero(mrp, sizeof (mac_resource_props_t)); 4720 } 4721 4722 int 4723 mac_set_pvid(mac_handle_t mh, uint16_t pvid) 4724 { 4725 mac_impl_t *mip = (mac_impl_t *)mh; 4726 mac_client_impl_t *mcip; 4727 mac_unicast_impl_t *muip; 4728 4729 i_mac_perim_enter(mip); 4730 if (pvid != 0) { 4731 for (mcip = mip->mi_clients_list; mcip != NULL; 4732 mcip = mcip->mci_client_next) { 4733 for (muip = mcip->mci_unicast_list; muip != NULL; 4734 muip = muip->mui_next) { 4735 if (muip->mui_vid == pvid) { 4736 i_mac_perim_exit(mip); 4737 return (EBUSY); 4738 } 4739 } 4740 } 4741 } 4742 mip->mi_pvid = pvid; 4743 i_mac_perim_exit(mip); 4744 return (0); 4745 } 4746 4747 uint16_t 4748 mac_get_pvid(mac_handle_t mh) 4749 { 4750 mac_impl_t *mip = (mac_impl_t *)mh; 4751 4752 return (mip->mi_pvid); 4753 } 4754 4755 uint32_t 4756 mac_get_llimit(mac_handle_t mh) 4757 { 4758 mac_impl_t *mip = (mac_impl_t *)mh; 4759 4760 return (mip->mi_llimit); 4761 } 4762 4763 uint32_t 4764 mac_get_ldecay(mac_handle_t mh) 4765 { 4766 mac_impl_t *mip = (mac_impl_t *)mh; 4767 4768 return (mip->mi_ldecay); 4769 } 4770 4771 /* 4772 * Rename a mac client, its flow, and the kstat. 4773 */ 4774 int 4775 mac_rename_primary(mac_handle_t mh, const char *new_name) 4776 { 4777 mac_impl_t *mip = (mac_impl_t *)mh; 4778 mac_client_impl_t *cur_clnt = NULL; 4779 flow_entry_t *fep; 4780 4781 i_mac_perim_enter(mip); 4782 4783 /* 4784 * VNICs: we need to change the sys flow name and 4785 * the associated flow kstat. 4786 */ 4787 if (mip->mi_state_flags & MIS_IS_VNIC) { 4788 mac_client_impl_t *mcip = mac_vnic_lower(mip); 4789 ASSERT(new_name != NULL); 4790 mac_rename_flow_names(mcip, new_name); 4791 mac_stat_rename(mcip); 4792 goto done; 4793 } 4794 /* 4795 * This mac may itself be an aggr link, or it may have some client 4796 * which is an aggr port. For both cases, we need to change the 4797 * aggr port's mac client name, its flow name and the associated flow 4798 * kstat. 4799 */ 4800 if (mip->mi_state_flags & MIS_IS_AGGR) { 4801 mac_capab_aggr_t aggr_cap; 4802 mac_rename_fn_t rename_fn; 4803 boolean_t ret; 4804 4805 ASSERT(new_name != NULL); 4806 ret = i_mac_capab_get((mac_handle_t)mip, MAC_CAPAB_AGGR, 4807 (void *)(&aggr_cap)); 4808 ASSERT(ret == B_TRUE); 4809 rename_fn = aggr_cap.mca_rename_fn; 4810 rename_fn(new_name, mip->mi_driver); 4811 /* 4812 * The aggr's client name and kstat flow name will be 4813 * updated below, i.e. via mac_rename_flow_names. 4814 */ 4815 } 4816 4817 for (cur_clnt = mip->mi_clients_list; cur_clnt != NULL; 4818 cur_clnt = cur_clnt->mci_client_next) { 4819 if (cur_clnt->mci_state_flags & MCIS_IS_AGGR_PORT) { 4820 if (new_name != NULL) { 4821 char *str_st = cur_clnt->mci_name; 4822 char *str_del = strchr(str_st, '-'); 4823 4824 ASSERT(str_del != NULL); 4825 bzero(str_del + 1, MAXNAMELEN - 4826 (str_del - str_st + 1)); 4827 bcopy(new_name, str_del + 1, 4828 strlen(new_name)); 4829 } 4830 fep = cur_clnt->mci_flent; 4831 mac_rename_flow(fep, cur_clnt->mci_name); 4832 break; 4833 } else if (new_name != NULL && 4834 cur_clnt->mci_state_flags & MCIS_USE_DATALINK_NAME) { 4835 mac_rename_flow_names(cur_clnt, new_name); 4836 break; 4837 } 4838 } 4839 4840 /* Recreate kstats associated with aggr pseudo rings */ 4841 if (mip->mi_state_flags & MIS_IS_AGGR) 4842 mac_pseudo_ring_stat_rename(mip); 4843 4844 done: 4845 i_mac_perim_exit(mip); 4846 return (0); 4847 } 4848 4849 /* 4850 * Rename the MAC client's flow names 4851 */ 4852 static void 4853 mac_rename_flow_names(mac_client_impl_t *mcip, const char *new_name) 4854 { 4855 flow_entry_t *flent; 4856 uint16_t vid; 4857 char flowname[MAXFLOWNAMELEN]; 4858 mac_impl_t *mip = mcip->mci_mip; 4859 4860 ASSERT(MAC_PERIM_HELD((mac_handle_t)mip)); 4861 4862 /* 4863 * Use mi_rw_lock to ensure that threads not in the mac perimeter 4864 * see a self-consistent value for mci_name 4865 */ 4866 rw_enter(&mip->mi_rw_lock, RW_WRITER); 4867 (void) strlcpy(mcip->mci_name, new_name, sizeof (mcip->mci_name)); 4868 rw_exit(&mip->mi_rw_lock); 4869 4870 mac_rename_flow(mcip->mci_flent, new_name); 4871 4872 if (mcip->mci_nflents == 1) 4873 return; 4874 4875 /* 4876 * We have to rename all the others too, no stats to destroy for 4877 * these. 4878 */ 4879 for (flent = mcip->mci_flent_list; flent != NULL; 4880 flent = flent->fe_client_next) { 4881 if (flent != mcip->mci_flent) { 4882 vid = i_mac_flow_vid(flent); 4883 (void) sprintf(flowname, "%s%u", new_name, vid); 4884 mac_flow_set_name(flent, flowname); 4885 } 4886 } 4887 } 4888 4889 4890 /* 4891 * Add a flow to the MAC client's flow list - i.e list of MAC/VID tuples 4892 * defined for the specified MAC client. 4893 */ 4894 static void 4895 mac_client_add_to_flow_list(mac_client_impl_t *mcip, flow_entry_t *flent) 4896 { 4897 ASSERT(MAC_PERIM_HELD((mac_handle_t)mcip->mci_mip)); 4898 /* 4899 * The promisc Rx data path walks the mci_flent_list. Protect by 4900 * using mi_rw_lock 4901 */ 4902 rw_enter(&mcip->mci_rw_lock, RW_WRITER); 4903 4904 mcip->mci_vidcache = MCIP_VIDCACHE_INVALID; 4905 4906 /* Add it to the head */ 4907 flent->fe_client_next = mcip->mci_flent_list; 4908 mcip->mci_flent_list = flent; 4909 mcip->mci_nflents++; 4910 4911 /* 4912 * Keep track of the number of non-zero VIDs addresses per MAC 4913 * client to avoid figuring it out in the data-path. 4914 */ 4915 if (i_mac_flow_vid(flent) != VLAN_ID_NONE) 4916 mcip->mci_nvids++; 4917 4918 rw_exit(&mcip->mci_rw_lock); 4919 } 4920 4921 /* 4922 * Remove a flow entry from the MAC client's list. 4923 */ 4924 static void 4925 mac_client_remove_flow_from_list(mac_client_impl_t *mcip, flow_entry_t *flent) 4926 { 4927 flow_entry_t *fe = mcip->mci_flent_list; 4928 flow_entry_t *prev_fe = NULL; 4929 4930 ASSERT(MAC_PERIM_HELD((mac_handle_t)mcip->mci_mip)); 4931 /* 4932 * The promisc Rx data path walks the mci_flent_list. Protect by 4933 * using mci_rw_lock 4934 */ 4935 rw_enter(&mcip->mci_rw_lock, RW_WRITER); 4936 mcip->mci_vidcache = MCIP_VIDCACHE_INVALID; 4937 4938 while ((fe != NULL) && (fe != flent)) { 4939 prev_fe = fe; 4940 fe = fe->fe_client_next; 4941 } 4942 4943 ASSERT(fe != NULL); 4944 if (prev_fe == NULL) { 4945 /* Deleting the first node */ 4946 mcip->mci_flent_list = fe->fe_client_next; 4947 } else { 4948 prev_fe->fe_client_next = fe->fe_client_next; 4949 } 4950 mcip->mci_nflents--; 4951 4952 if (i_mac_flow_vid(flent) != VLAN_ID_NONE) 4953 mcip->mci_nvids--; 4954 4955 rw_exit(&mcip->mci_rw_lock); 4956 } 4957 4958 /* 4959 * Check if the given VID belongs to this MAC client. 4960 */ 4961 boolean_t 4962 mac_client_check_flow_vid(mac_client_impl_t *mcip, uint16_t vid) 4963 { 4964 flow_entry_t *flent; 4965 uint16_t mci_vid; 4966 uint32_t cache = mcip->mci_vidcache; 4967 4968 /* 4969 * In hopes of not having to touch the mci_rw_lock, check to see if 4970 * this vid matches our cached result. 4971 */ 4972 if (MCIP_VIDCACHE_ISVALID(cache) && MCIP_VIDCACHE_VID(cache) == vid) 4973 return (MCIP_VIDCACHE_BOOL(cache) ? B_TRUE : B_FALSE); 4974 4975 /* The mci_flent_list is protected by mci_rw_lock */ 4976 rw_enter(&mcip->mci_rw_lock, RW_WRITER); 4977 for (flent = mcip->mci_flent_list; flent != NULL; 4978 flent = flent->fe_client_next) { 4979 mci_vid = i_mac_flow_vid(flent); 4980 if (vid == mci_vid) { 4981 mcip->mci_vidcache = MCIP_VIDCACHE_CACHE(vid, B_TRUE); 4982 rw_exit(&mcip->mci_rw_lock); 4983 return (B_TRUE); 4984 } 4985 } 4986 4987 mcip->mci_vidcache = MCIP_VIDCACHE_CACHE(vid, B_FALSE); 4988 rw_exit(&mcip->mci_rw_lock); 4989 return (B_FALSE); 4990 } 4991 4992 /* 4993 * Get the flow entry for the specified <MAC addr, VID> tuple. 4994 */ 4995 static flow_entry_t * 4996 mac_client_get_flow(mac_client_impl_t *mcip, mac_unicast_impl_t *muip) 4997 { 4998 mac_address_t *map = mcip->mci_unicast; 4999 flow_entry_t *flent; 5000 uint16_t vid; 5001 flow_desc_t flow_desc; 5002 5003 ASSERT(MAC_PERIM_HELD((mac_handle_t)mcip->mci_mip)); 5004 5005 mac_flow_get_desc(mcip->mci_flent, &flow_desc); 5006 if (bcmp(flow_desc.fd_dst_mac, map->ma_addr, map->ma_len) != 0) 5007 return (NULL); 5008 5009 for (flent = mcip->mci_flent_list; flent != NULL; 5010 flent = flent->fe_client_next) { 5011 vid = i_mac_flow_vid(flent); 5012 if (vid == muip->mui_vid) { 5013 return (flent); 5014 } 5015 } 5016 5017 return (NULL); 5018 } 5019 5020 /* 5021 * Since mci_flent has the SRSs, when we want to remove it, we replace 5022 * the flow_desc_t in mci_flent with that of an existing flent and then 5023 * remove that flent instead of mci_flent. 5024 */ 5025 static flow_entry_t * 5026 mac_client_swap_mciflent(mac_client_impl_t *mcip) 5027 { 5028 flow_entry_t *flent = mcip->mci_flent; 5029 flow_tab_t *ft = flent->fe_flow_tab; 5030 flow_entry_t *flent1; 5031 flow_desc_t fl_desc; 5032 char fl_name[MAXFLOWNAMELEN]; 5033 int err; 5034 5035 ASSERT(MAC_PERIM_HELD((mac_handle_t)mcip->mci_mip)); 5036 ASSERT(mcip->mci_nflents > 1); 5037 5038 /* get the next flent following the primary flent */ 5039 flent1 = mcip->mci_flent_list->fe_client_next; 5040 ASSERT(flent1 != NULL && flent1->fe_flow_tab == ft); 5041 5042 /* 5043 * Remove the flent from the flow table before updating the 5044 * flow descriptor as the hash depends on the flow descriptor. 5045 * This also helps incoming packet classification avoid having 5046 * to grab fe_lock. Access to fe_flow_desc of a flent not in the 5047 * flow table is done under the fe_lock so that log or stat functions 5048 * see a self-consistent fe_flow_desc. The name and desc are specific 5049 * to a flow, the rest are shared by all the clients, including 5050 * resource control etc. 5051 */ 5052 mac_flow_remove(ft, flent, B_TRUE); 5053 mac_flow_remove(ft, flent1, B_TRUE); 5054 5055 bcopy(&flent->fe_flow_desc, &fl_desc, sizeof (flow_desc_t)); 5056 bcopy(flent->fe_flow_name, fl_name, MAXFLOWNAMELEN); 5057 5058 /* update the primary flow entry */ 5059 mutex_enter(&flent->fe_lock); 5060 bcopy(&flent1->fe_flow_desc, &flent->fe_flow_desc, 5061 sizeof (flow_desc_t)); 5062 bcopy(&flent1->fe_flow_name, &flent->fe_flow_name, MAXFLOWNAMELEN); 5063 mutex_exit(&flent->fe_lock); 5064 5065 /* update the flow entry that is to be freed */ 5066 mutex_enter(&flent1->fe_lock); 5067 bcopy(&fl_desc, &flent1->fe_flow_desc, sizeof (flow_desc_t)); 5068 bcopy(fl_name, &flent1->fe_flow_name, MAXFLOWNAMELEN); 5069 mutex_exit(&flent1->fe_lock); 5070 5071 /* now reinsert the flow entries in the table */ 5072 err = mac_flow_add(ft, flent); 5073 ASSERT(err == 0); 5074 5075 err = mac_flow_add(ft, flent1); 5076 ASSERT(err == 0); 5077 5078 return (flent1); 5079 } 5080 5081 /* 5082 * Return whether there is only one flow entry associated with this 5083 * MAC client. 5084 */ 5085 static boolean_t 5086 mac_client_single_rcvr(mac_client_impl_t *mcip) 5087 { 5088 return (mcip->mci_nflents == 1); 5089 } 5090 5091 int 5092 mac_validate_props(mac_impl_t *mip, mac_resource_props_t *mrp) 5093 { 5094 boolean_t reset; 5095 uint32_t rings_needed; 5096 uint32_t rings_avail; 5097 mac_group_type_t gtype; 5098 mac_resource_props_t *mip_mrp; 5099 5100 if (mrp == NULL) 5101 return (0); 5102 5103 if (mrp->mrp_mask & MRP_PRIORITY) { 5104 mac_priority_level_t pri = mrp->mrp_priority; 5105 5106 if (pri < MPL_LOW || pri > MPL_RESET) 5107 return (EINVAL); 5108 } 5109 5110 if (mrp->mrp_mask & MRP_MAXBW) { 5111 uint64_t maxbw = mrp->mrp_maxbw; 5112 5113 if (maxbw < MRP_MAXBW_MINVAL && maxbw != 0) 5114 return (EINVAL); 5115 } 5116 if (mrp->mrp_mask & MRP_CPUS) { 5117 int i, j; 5118 mac_cpu_mode_t fanout; 5119 5120 if (mrp->mrp_ncpus > ncpus) 5121 return (EINVAL); 5122 5123 for (i = 0; i < mrp->mrp_ncpus; i++) { 5124 for (j = 0; j < mrp->mrp_ncpus; j++) { 5125 if (i != j && 5126 mrp->mrp_cpu[i] == mrp->mrp_cpu[j]) { 5127 return (EINVAL); 5128 } 5129 } 5130 } 5131 5132 for (i = 0; i < mrp->mrp_ncpus; i++) { 5133 cpu_t *cp; 5134 int rv; 5135 5136 mutex_enter(&cpu_lock); 5137 cp = cpu_get(mrp->mrp_cpu[i]); 5138 if (cp != NULL) 5139 rv = cpu_is_online(cp); 5140 else 5141 rv = 0; 5142 mutex_exit(&cpu_lock); 5143 if (rv == 0) 5144 return (EINVAL); 5145 } 5146 5147 fanout = mrp->mrp_fanout_mode; 5148 if (fanout < 0 || fanout > MCM_CPUS) 5149 return (EINVAL); 5150 } 5151 5152 if (mrp->mrp_mask & MRP_PROTECT) { 5153 int err = mac_protect_validate(mrp); 5154 if (err != 0) 5155 return (err); 5156 } 5157 5158 if (!(mrp->mrp_mask & MRP_RX_RINGS) && 5159 !(mrp->mrp_mask & MRP_TX_RINGS)) { 5160 return (0); 5161 } 5162 5163 /* 5164 * mip will be null when we come from mac_flow_create or 5165 * mac_link_flow_modify. In the latter case it is a user flow, 5166 * for which we don't support rings. In the former we would 5167 * have validated the props beforehand (i_mac_unicast_add -> 5168 * mac_client_set_resources -> validate for the primary and 5169 * vnic_dev_create -> mac_client_set_resources -> validate for 5170 * a vnic. 5171 */ 5172 if (mip == NULL) 5173 return (0); 5174 5175 /* 5176 * We don't support setting rings property for a VNIC that is using a 5177 * primary address (VLAN) 5178 */ 5179 if ((mip->mi_state_flags & MIS_IS_VNIC) && 5180 mac_is_vnic_primary((mac_handle_t)mip)) { 5181 return (ENOTSUP); 5182 } 5183 5184 mip_mrp = &mip->mi_resource_props; 5185 /* 5186 * The rings property should be validated against the NICs 5187 * resources 5188 */ 5189 if (mip->mi_state_flags & MIS_IS_VNIC) 5190 mip = (mac_impl_t *)mac_get_lower_mac_handle((mac_handle_t)mip); 5191 5192 reset = mrp->mrp_mask & MRP_RINGS_RESET; 5193 /* 5194 * If groups are not supported, return error. 5195 */ 5196 if (((mrp->mrp_mask & MRP_RX_RINGS) && mip->mi_rx_groups == NULL) || 5197 ((mrp->mrp_mask & MRP_TX_RINGS) && mip->mi_tx_groups == NULL)) { 5198 return (EINVAL); 5199 } 5200 /* 5201 * If we are just resetting, there is no validation needed. 5202 */ 5203 if (reset) 5204 return (0); 5205 5206 if (mrp->mrp_mask & MRP_RX_RINGS) { 5207 rings_needed = mrp->mrp_nrxrings; 5208 /* 5209 * We just want to check if the number of additional 5210 * rings requested is available. 5211 */ 5212 if (mip_mrp->mrp_mask & MRP_RX_RINGS) { 5213 if (mrp->mrp_nrxrings > mip_mrp->mrp_nrxrings) 5214 /* Just check for the additional rings */ 5215 rings_needed -= mip_mrp->mrp_nrxrings; 5216 else 5217 /* We are not asking for additional rings */ 5218 rings_needed = 0; 5219 } 5220 rings_avail = mip->mi_rxrings_avail; 5221 gtype = mip->mi_rx_group_type; 5222 } else { 5223 rings_needed = mrp->mrp_ntxrings; 5224 /* Similarly for the TX rings */ 5225 if (mip_mrp->mrp_mask & MRP_TX_RINGS) { 5226 if (mrp->mrp_ntxrings > mip_mrp->mrp_ntxrings) 5227 /* Just check for the additional rings */ 5228 rings_needed -= mip_mrp->mrp_ntxrings; 5229 else 5230 /* We are not asking for additional rings */ 5231 rings_needed = 0; 5232 } 5233 rings_avail = mip->mi_txrings_avail; 5234 gtype = mip->mi_tx_group_type; 5235 } 5236 5237 /* Error if the group is dynamic .. */ 5238 if (gtype == MAC_GROUP_TYPE_DYNAMIC) { 5239 /* 5240 * .. and rings specified are more than available. 5241 */ 5242 if (rings_needed > rings_avail) 5243 return (EINVAL); 5244 } else { 5245 /* 5246 * OR group is static and we have specified some rings. 5247 */ 5248 if (rings_needed > 0) 5249 return (EINVAL); 5250 } 5251 return (0); 5252 } 5253 5254 /* 5255 * Send a MAC_NOTE_LINK notification to all the MAC clients whenever the 5256 * underlying physical link is down. This is to allow MAC clients to 5257 * communicate with other clients. 5258 */ 5259 void 5260 mac_virtual_link_update(mac_impl_t *mip) 5261 { 5262 if (mip->mi_linkstate != LINK_STATE_UP) 5263 i_mac_notify(mip, MAC_NOTE_LINK); 5264 } 5265 5266 /* 5267 * For clients that have a pass-thru MAC, e.g. VNIC, we set the VNIC's 5268 * mac handle in the client. 5269 */ 5270 void 5271 mac_set_upper_mac(mac_client_handle_t mch, mac_handle_t mh, 5272 mac_resource_props_t *mrp) 5273 { 5274 mac_client_impl_t *mcip = (mac_client_impl_t *)mch; 5275 mac_impl_t *mip = (mac_impl_t *)mh; 5276 5277 mcip->mci_upper_mip = mip; 5278 /* If there are any properties, copy it over too */ 5279 if (mrp != NULL) { 5280 bcopy(mrp, &mip->mi_resource_props, 5281 sizeof (mac_resource_props_t)); 5282 } 5283 } 5284 5285 /* 5286 * Mark the mac as being used exclusively by the single mac client that is 5287 * doing some control operation on this mac. No further opens of this mac 5288 * will be allowed until this client calls mac_unmark_exclusive. The mac 5289 * client calling this function must already be in the mac perimeter 5290 */ 5291 int 5292 mac_mark_exclusive(mac_handle_t mh) 5293 { 5294 mac_impl_t *mip = (mac_impl_t *)mh; 5295 5296 ASSERT(MAC_PERIM_HELD(mh)); 5297 /* 5298 * Look up its entry in the global hash table. 5299 */ 5300 rw_enter(&i_mac_impl_lock, RW_WRITER); 5301 if (mip->mi_state_flags & MIS_DISABLED) { 5302 rw_exit(&i_mac_impl_lock); 5303 return (ENOENT); 5304 } 5305 5306 /* 5307 * A reference to mac is held even if the link is not plumbed. 5308 * In i_dls_link_create() we open the MAC interface and hold the 5309 * reference. There is an additional reference for the mac_open 5310 * done in acquiring the mac perimeter 5311 */ 5312 if (mip->mi_ref != 2) { 5313 rw_exit(&i_mac_impl_lock); 5314 return (EBUSY); 5315 } 5316 5317 ASSERT(!(mip->mi_state_flags & MIS_EXCLUSIVE_HELD)); 5318 mip->mi_state_flags |= MIS_EXCLUSIVE_HELD; 5319 rw_exit(&i_mac_impl_lock); 5320 return (0); 5321 } 5322 5323 void 5324 mac_unmark_exclusive(mac_handle_t mh) 5325 { 5326 mac_impl_t *mip = (mac_impl_t *)mh; 5327 5328 ASSERT(MAC_PERIM_HELD(mh)); 5329 5330 rw_enter(&i_mac_impl_lock, RW_WRITER); 5331 /* 1 for the creation and another for the perimeter */ 5332 ASSERT(mip->mi_ref == 2 && (mip->mi_state_flags & MIS_EXCLUSIVE_HELD)); 5333 mip->mi_state_flags &= ~MIS_EXCLUSIVE_HELD; 5334 rw_exit(&i_mac_impl_lock); 5335 } 5336 5337 /* 5338 * Set the MTU for the specified MAC. 5339 */ 5340 int 5341 mac_set_mtu(mac_handle_t mh, uint_t new_mtu, uint_t *old_mtu_arg) 5342 { 5343 mac_impl_t *mip = (mac_impl_t *)mh; 5344 uint_t old_mtu; 5345 int rv = 0; 5346 5347 i_mac_perim_enter(mip); 5348 5349 if (!(mip->mi_callbacks->mc_callbacks & (MC_SETPROP|MC_GETPROP))) { 5350 rv = ENOTSUP; 5351 goto bail; 5352 } 5353 5354 old_mtu = mip->mi_sdu_max; 5355 5356 if (new_mtu == 0 || new_mtu < mip->mi_sdu_min) { 5357 rv = EINVAL; 5358 goto bail; 5359 } 5360 5361 rw_enter(&mip->mi_rw_lock, RW_READER); 5362 if (mip->mi_mtrp != NULL && new_mtu < mip->mi_mtrp->mtr_mtu) { 5363 rv = EBUSY; 5364 rw_exit(&mip->mi_rw_lock); 5365 goto bail; 5366 } 5367 rw_exit(&mip->mi_rw_lock); 5368 5369 if (old_mtu != new_mtu) { 5370 rv = mip->mi_callbacks->mc_setprop(mip->mi_driver, 5371 "mtu", MAC_PROP_MTU, sizeof (uint_t), &new_mtu); 5372 if (rv != 0) 5373 goto bail; 5374 rv = mac_maxsdu_update(mh, new_mtu); 5375 ASSERT(rv == 0); 5376 } 5377 5378 bail: 5379 i_mac_perim_exit(mip); 5380 5381 if (rv == 0 && old_mtu_arg != NULL) 5382 *old_mtu_arg = old_mtu; 5383 return (rv); 5384 } 5385 5386 /* 5387 * Return the RX h/w information for the group indexed by grp_num. 5388 */ 5389 void 5390 mac_get_hwrxgrp_info(mac_handle_t mh, int grp_index, uint_t *grp_num, 5391 uint_t *n_rings, uint_t *rings, uint_t *type, uint_t *n_clnts, 5392 char *clnts_name) 5393 { 5394 mac_impl_t *mip = (mac_impl_t *)mh; 5395 mac_grp_client_t *mcip; 5396 uint_t i = 0, index = 0; 5397 mac_ring_t *ring; 5398 5399 /* Revisit when we implement fully dynamic group allocation */ 5400 ASSERT(grp_index >= 0 && grp_index < mip->mi_rx_group_count); 5401 5402 rw_enter(&mip->mi_rw_lock, RW_READER); 5403 *grp_num = mip->mi_rx_groups[grp_index].mrg_index; 5404 *type = mip->mi_rx_groups[grp_index].mrg_type; 5405 *n_rings = mip->mi_rx_groups[grp_index].mrg_cur_count; 5406 ring = mip->mi_rx_groups[grp_index].mrg_rings; 5407 for (index = 0; index < mip->mi_rx_groups[grp_index].mrg_cur_count; 5408 index++) { 5409 rings[index] = ring->mr_index; 5410 ring = ring->mr_next; 5411 } 5412 /* Assuming the 1st is the default group */ 5413 index = 0; 5414 if (grp_index == 0) { 5415 (void) strlcpy(clnts_name, "<default,mcast>,", 5416 MAXCLIENTNAMELEN); 5417 index += strlen("<default,mcast>,"); 5418 } 5419 for (mcip = mip->mi_rx_groups[grp_index].mrg_clients; mcip != NULL; 5420 mcip = mcip->mgc_next) { 5421 int name_len = strlen(mcip->mgc_client->mci_name); 5422 5423 /* 5424 * MAXCLIENTNAMELEN is the buffer size reserved for client 5425 * names. 5426 * XXXX Formating the client name string needs to be moved 5427 * to user land when fixing the size of dhi_clnts in 5428 * dld_hwgrpinfo_t. We should use n_clients * client_name for 5429 * dhi_clntsin instead of MAXCLIENTNAMELEN 5430 */ 5431 if (index + name_len >= MAXCLIENTNAMELEN) { 5432 index = MAXCLIENTNAMELEN; 5433 break; 5434 } 5435 bcopy(mcip->mgc_client->mci_name, &(clnts_name[index]), 5436 name_len); 5437 index += name_len; 5438 clnts_name[index++] = ','; 5439 i++; 5440 } 5441 5442 /* Get rid of the last , */ 5443 if (index > 0) 5444 clnts_name[index - 1] = '\0'; 5445 *n_clnts = i; 5446 rw_exit(&mip->mi_rw_lock); 5447 } 5448 5449 /* 5450 * Return the TX h/w information for the group indexed by grp_num. 5451 */ 5452 void 5453 mac_get_hwtxgrp_info(mac_handle_t mh, int grp_index, uint_t *grp_num, 5454 uint_t *n_rings, uint_t *rings, uint_t *type, uint_t *n_clnts, 5455 char *clnts_name) 5456 { 5457 mac_impl_t *mip = (mac_impl_t *)mh; 5458 mac_grp_client_t *mcip; 5459 uint_t i = 0, index = 0; 5460 mac_ring_t *ring; 5461 5462 /* Revisit when we implement fully dynamic group allocation */ 5463 ASSERT(grp_index >= 0 && grp_index <= mip->mi_tx_group_count); 5464 5465 rw_enter(&mip->mi_rw_lock, RW_READER); 5466 *grp_num = mip->mi_tx_groups[grp_index].mrg_index > 0 ? 5467 mip->mi_tx_groups[grp_index].mrg_index : grp_index; 5468 *type = mip->mi_tx_groups[grp_index].mrg_type; 5469 *n_rings = mip->mi_tx_groups[grp_index].mrg_cur_count; 5470 ring = mip->mi_tx_groups[grp_index].mrg_rings; 5471 for (index = 0; index < mip->mi_tx_groups[grp_index].mrg_cur_count; 5472 index++) { 5473 rings[index] = ring->mr_index; 5474 ring = ring->mr_next; 5475 } 5476 index = 0; 5477 /* Default group has an index of -1 */ 5478 if (mip->mi_tx_groups[grp_index].mrg_index < 0) { 5479 (void) strlcpy(clnts_name, "<default>,", 5480 MAXCLIENTNAMELEN); 5481 index += strlen("<default>,"); 5482 } 5483 for (mcip = mip->mi_tx_groups[grp_index].mrg_clients; mcip != NULL; 5484 mcip = mcip->mgc_next) { 5485 int name_len = strlen(mcip->mgc_client->mci_name); 5486 5487 /* 5488 * MAXCLIENTNAMELEN is the buffer size reserved for client 5489 * names. 5490 * XXXX Formating the client name string needs to be moved 5491 * to user land when fixing the size of dhi_clnts in 5492 * dld_hwgrpinfo_t. We should use n_clients * client_name for 5493 * dhi_clntsin instead of MAXCLIENTNAMELEN 5494 */ 5495 if (index + name_len >= MAXCLIENTNAMELEN) { 5496 index = MAXCLIENTNAMELEN; 5497 break; 5498 } 5499 bcopy(mcip->mgc_client->mci_name, &(clnts_name[index]), 5500 name_len); 5501 index += name_len; 5502 clnts_name[index++] = ','; 5503 i++; 5504 } 5505 5506 /* Get rid of the last , */ 5507 if (index > 0) 5508 clnts_name[index - 1] = '\0'; 5509 *n_clnts = i; 5510 rw_exit(&mip->mi_rw_lock); 5511 } 5512 5513 /* 5514 * Return the group count for RX or TX. 5515 */ 5516 uint_t 5517 mac_hwgrp_num(mac_handle_t mh, int type) 5518 { 5519 mac_impl_t *mip = (mac_impl_t *)mh; 5520 5521 /* 5522 * Return the Rx and Tx group count; for the Tx we need to 5523 * include the default too. 5524 */ 5525 return (type == MAC_RING_TYPE_RX ? mip->mi_rx_group_count : 5526 mip->mi_tx_groups != NULL ? mip->mi_tx_group_count + 1 : 0); 5527 } 5528 5529 /* 5530 * The total number of free TX rings for this MAC. 5531 */ 5532 uint_t 5533 mac_txavail_get(mac_handle_t mh) 5534 { 5535 mac_impl_t *mip = (mac_impl_t *)mh; 5536 5537 return (mip->mi_txrings_avail); 5538 } 5539 5540 /* 5541 * The total number of free RX rings for this MAC. 5542 */ 5543 uint_t 5544 mac_rxavail_get(mac_handle_t mh) 5545 { 5546 mac_impl_t *mip = (mac_impl_t *)mh; 5547 5548 return (mip->mi_rxrings_avail); 5549 } 5550 5551 /* 5552 * The total number of reserved RX rings on this MAC. 5553 */ 5554 uint_t 5555 mac_rxrsvd_get(mac_handle_t mh) 5556 { 5557 mac_impl_t *mip = (mac_impl_t *)mh; 5558 5559 return (mip->mi_rxrings_rsvd); 5560 } 5561 5562 /* 5563 * The total number of reserved TX rings on this MAC. 5564 */ 5565 uint_t 5566 mac_txrsvd_get(mac_handle_t mh) 5567 { 5568 mac_impl_t *mip = (mac_impl_t *)mh; 5569 5570 return (mip->mi_txrings_rsvd); 5571 } 5572 5573 /* 5574 * Total number of free RX groups on this MAC. 5575 */ 5576 uint_t 5577 mac_rxhwlnksavail_get(mac_handle_t mh) 5578 { 5579 mac_impl_t *mip = (mac_impl_t *)mh; 5580 5581 return (mip->mi_rxhwclnt_avail); 5582 } 5583 5584 /* 5585 * Total number of RX groups reserved on this MAC. 5586 */ 5587 uint_t 5588 mac_rxhwlnksrsvd_get(mac_handle_t mh) 5589 { 5590 mac_impl_t *mip = (mac_impl_t *)mh; 5591 5592 return (mip->mi_rxhwclnt_used); 5593 } 5594 5595 /* 5596 * Total number of free TX groups on this MAC. 5597 */ 5598 uint_t 5599 mac_txhwlnksavail_get(mac_handle_t mh) 5600 { 5601 mac_impl_t *mip = (mac_impl_t *)mh; 5602 5603 return (mip->mi_txhwclnt_avail); 5604 } 5605 5606 /* 5607 * Total number of TX groups reserved on this MAC. 5608 */ 5609 uint_t 5610 mac_txhwlnksrsvd_get(mac_handle_t mh) 5611 { 5612 mac_impl_t *mip = (mac_impl_t *)mh; 5613 5614 return (mip->mi_txhwclnt_used); 5615 } 5616 5617 /* 5618 * Initialize the rings property for a mac client. A non-0 value for 5619 * rxring or txring specifies the number of rings required, a value 5620 * of MAC_RXRINGS_NONE/MAC_TXRINGS_NONE specifies that it doesn't need 5621 * any RX/TX rings and a value of MAC_RXRINGS_DONTCARE/MAC_TXRINGS_DONTCARE 5622 * means the system can decide whether it can give any rings or not. 5623 */ 5624 void 5625 mac_client_set_rings(mac_client_handle_t mch, int rxrings, int txrings) 5626 { 5627 mac_client_impl_t *mcip = (mac_client_impl_t *)mch; 5628 mac_resource_props_t *mrp = MCIP_RESOURCE_PROPS(mcip); 5629 5630 if (rxrings != MAC_RXRINGS_DONTCARE) { 5631 mrp->mrp_mask |= MRP_RX_RINGS; 5632 mrp->mrp_nrxrings = rxrings; 5633 } 5634 5635 if (txrings != MAC_TXRINGS_DONTCARE) { 5636 mrp->mrp_mask |= MRP_TX_RINGS; 5637 mrp->mrp_ntxrings = txrings; 5638 } 5639 } 5640 5641 boolean_t 5642 mac_get_promisc_filtered(mac_client_handle_t mch) 5643 { 5644 mac_client_impl_t *mcip = (mac_client_impl_t *)mch; 5645 5646 return (mcip->mci_protect_flags & MPT_FLAG_PROMISC_FILTERED); 5647 } 5648 5649 void 5650 mac_set_promisc_filtered(mac_client_handle_t mch, boolean_t enable) 5651 { 5652 mac_client_impl_t *mcip = (mac_client_impl_t *)mch; 5653 5654 ASSERT(MAC_PERIM_HELD((mac_handle_t)mcip->mci_mip)); 5655 if (enable) 5656 mcip->mci_protect_flags |= MPT_FLAG_PROMISC_FILTERED; 5657 else 5658 mcip->mci_protect_flags &= ~MPT_FLAG_PROMISC_FILTERED; 5659 } 5660