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 2022 OmniOS Community Edition (OmniOSce) Association. 27 * Copyright 2026 Oxide Computer Company 28 */ 29 30 /* 31 * - General Introduction: 32 * 33 * This file contains the implementation of the MAC client kernel 34 * API and related code. The MAC client API allows a kernel module 35 * to gain access to a MAC instance (physical NIC, link aggregation, etc). 36 * It allows a MAC client to associate itself with a MAC address, 37 * VLANs, callback functions for data traffic and for promiscuous mode. 38 * The MAC client API is also used to specify the properties associated 39 * with a MAC client, such as bandwidth limits, priority, CPUS, etc. 40 * These properties are further used to determine the hardware resources 41 * to allocate to the various MAC clients. 42 * 43 * - Primary MAC clients: 44 * 45 * The MAC client API refers to "primary MAC clients". A primary MAC 46 * client is a client which "owns" the primary MAC address of 47 * the underlying MAC instance. The primary MAC address is called out 48 * since it is associated with specific semantics: the primary MAC 49 * address is the MAC address which is assigned to the IP interface 50 * when it is plumbed, and the primary MAC address is assigned 51 * to VLAN data-links. The primary address of a MAC instance can 52 * also change dynamically from under the MAC client, for example 53 * as a result of a change of state of a link aggregation. In that 54 * case the MAC layer automatically updates all data-structures which 55 * refer to the current value of the primary MAC address. Typical 56 * primary MAC clients are dls, aggr, and xnb. A typical non-primary 57 * MAC client is the vnic driver. 58 * 59 * - Virtual Switching: 60 * 61 * The MAC layer implements a virtual switch between the MAC clients 62 * (primary and non-primary) defined on top of the same underlying 63 * NIC (physical, link aggregation, etc). The virtual switch is 64 * VLAN-aware, i.e. it allows multiple MAC clients to be member 65 * of one or more VLANs, and the virtual switch will distribute 66 * multicast tagged packets only to the member of the corresponding 67 * VLANs. 68 * 69 * - Upper vs Lower MAC: 70 * 71 * Creating a VNIC on top of a MAC instance effectively causes 72 * two MAC instances to be layered on top of each other, one for 73 * the VNIC(s), one for the underlying MAC instance (physical NIC, 74 * link aggregation, etc). In the code below we refer to the 75 * underlying NIC as the "lower MAC", and we refer to VNICs as 76 * the "upper MAC". 77 * 78 * - Pass-through for VNICs: 79 * 80 * When VNICs are created on top of an underlying MAC, this causes 81 * a layering of two MAC instances. Since the lower MAC already 82 * does the switching and demultiplexing to its MAC clients, the 83 * upper MAC would simply have to pass packets to the layer below 84 * or above it, which would introduce overhead. In order to avoid 85 * this overhead, the MAC layer implements a pass-through mechanism 86 * for VNICs. When a VNIC opens the lower MAC instance, it saves 87 * the MAC client handle it optains from the MAC layer. When a MAC 88 * client opens a VNIC (upper MAC), the MAC layer detects that 89 * the MAC being opened is a VNIC, and gets the MAC client handle 90 * that the VNIC driver obtained from the lower MAC. This exchange 91 * is done through a private capability between the MAC layer 92 * and the VNIC driver. The upper MAC then returns that handle 93 * directly to its MAC client. Any operation done by the upper 94 * MAC client is now done on the lower MAC client handle, which 95 * allows the VNIC driver to be completely bypassed for the 96 * performance sensitive data-path. 97 * 98 * - Secondary MACs for VNICs: 99 * 100 * VNICs support multiple upper mac clients to enable support for 101 * multiple MAC addresses on the VNIC. When the VNIC is created the 102 * initial mac client is the primary upper mac. Any additional mac 103 * clients are secondary macs. These are kept in sync with the primary 104 * (for things such as the rx function and resource control settings) 105 * using the same private capability interface between the MAC layer 106 * and the VNIC layer. 107 * 108 */ 109 110 #include <sys/types.h> 111 #include <sys/conf.h> 112 #include <sys/id_space.h> 113 #include <sys/esunddi.h> 114 #include <sys/stat.h> 115 #include <sys/mkdev.h> 116 #include <sys/stream.h> 117 #include <sys/strsun.h> 118 #include <sys/strsubr.h> 119 #include <sys/pattr.h> 120 #include <sys/dlpi.h> 121 #include <sys/modhash.h> 122 #include <sys/mac_impl.h> 123 #include <sys/mac_client_impl.h> 124 #include <sys/mac_soft_ring.h> 125 #include <sys/mac_stat.h> 126 #include <sys/dls.h> 127 #include <sys/dld.h> 128 #include <sys/modctl.h> 129 #include <sys/fs/dv_node.h> 130 #include <sys/thread.h> 131 #include <sys/proc.h> 132 #include <sys/callb.h> 133 #include <sys/cpuvar.h> 134 #include <sys/atomic.h> 135 #include <sys/sdt.h> 136 #include <sys/mac_flow.h> 137 #include <sys/ddi_intr_impl.h> 138 #include <sys/disp.h> 139 #include <sys/sdt.h> 140 #include <sys/vnic.h> 141 #include <sys/vnic_impl.h> 142 #include <sys/vlan.h> 143 #include <inet/ip.h> 144 #include <inet/ip6.h> 145 #include <sys/exacct.h> 146 #include <sys/exacct_impl.h> 147 #include <inet/nd.h> 148 #include <sys/ethernet.h> 149 150 kmem_cache_t *mac_client_impl_cache; 151 kmem_cache_t *mac_promisc_impl_cache; 152 153 static boolean_t mac_client_single_rcvr(mac_client_impl_t *); 154 static flow_entry_t *mac_client_swap_mciflent(mac_client_impl_t *); 155 static flow_entry_t *mac_client_get_flow(mac_client_impl_t *, 156 mac_unicast_impl_t *); 157 static void mac_client_remove_flow_from_list(mac_client_impl_t *, 158 flow_entry_t *); 159 static void mac_client_add_to_flow_list(mac_client_impl_t *, flow_entry_t *); 160 static void mac_rename_flow_names(mac_client_impl_t *, const char *); 161 static void mac_virtual_link_update(mac_impl_t *); 162 static int mac_client_datapath_setup(mac_client_impl_t *, uint16_t, 163 uint8_t *, mac_resource_props_t *, boolean_t, mac_unicast_impl_t *); 164 static void mac_client_datapath_teardown(mac_client_handle_t, 165 mac_unicast_impl_t *, flow_entry_t *); 166 static int mac_resource_ctl_set(mac_client_handle_t, mac_resource_props_t *); 167 168 /* ARGSUSED */ 169 static int 170 i_mac_client_impl_ctor(void *buf, void *arg, int kmflag) 171 { 172 int i; 173 mac_client_impl_t *mcip = buf; 174 175 bzero(buf, MAC_CLIENT_IMPL_SIZE); 176 mutex_init(&mcip->mci_tx_cb_lock, NULL, MUTEX_DRIVER, NULL); 177 mcip->mci_tx_notify_cb_info.mcbi_lockp = &mcip->mci_tx_cb_lock; 178 179 ASSERT(mac_tx_percpu_cnt >= 0); 180 for (i = 0; i <= mac_tx_percpu_cnt; i++) { 181 mutex_init(&mcip->mci_tx_pcpu[i].pcpu_tx_lock, NULL, 182 MUTEX_DRIVER, NULL); 183 } 184 cv_init(&mcip->mci_tx_cv, NULL, CV_DRIVER, NULL); 185 186 return (0); 187 } 188 189 /* ARGSUSED */ 190 static void 191 i_mac_client_impl_dtor(void *buf, void *arg) 192 { 193 int i; 194 mac_client_impl_t *mcip = buf; 195 196 ASSERT(mcip->mci_promisc_list == NULL); 197 ASSERT(mcip->mci_unicast_list == NULL); 198 ASSERT(mcip->mci_state_flags == 0); 199 ASSERT(mcip->mci_tx_flag == 0); 200 201 mutex_destroy(&mcip->mci_tx_cb_lock); 202 203 ASSERT(mac_tx_percpu_cnt >= 0); 204 for (i = 0; i <= mac_tx_percpu_cnt; i++) { 205 ASSERT(mcip->mci_tx_pcpu[i].pcpu_tx_refcnt == 0); 206 mutex_destroy(&mcip->mci_tx_pcpu[i].pcpu_tx_lock); 207 } 208 cv_destroy(&mcip->mci_tx_cv); 209 } 210 211 /* ARGSUSED */ 212 static int 213 i_mac_promisc_impl_ctor(void *buf, void *arg, int kmflag) 214 { 215 mac_promisc_impl_t *mpip = buf; 216 217 bzero(buf, sizeof (mac_promisc_impl_t)); 218 mpip->mpi_mci_link.mcb_objp = buf; 219 mpip->mpi_mci_link.mcb_objsize = sizeof (mac_promisc_impl_t); 220 mpip->mpi_mi_link.mcb_objp = buf; 221 mpip->mpi_mi_link.mcb_objsize = sizeof (mac_promisc_impl_t); 222 return (0); 223 } 224 225 /* ARGSUSED */ 226 static void 227 i_mac_promisc_impl_dtor(void *buf, void *arg) 228 { 229 mac_promisc_impl_t *mpip = buf; 230 231 ASSERT(mpip->mpi_mci_link.mcb_objp != NULL); 232 ASSERT(mpip->mpi_mci_link.mcb_objsize == sizeof (mac_promisc_impl_t)); 233 ASSERT(mpip->mpi_mi_link.mcb_objp == mpip->mpi_mci_link.mcb_objp); 234 ASSERT(mpip->mpi_mi_link.mcb_objsize == sizeof (mac_promisc_impl_t)); 235 236 mpip->mpi_mci_link.mcb_objp = NULL; 237 mpip->mpi_mci_link.mcb_objsize = 0; 238 mpip->mpi_mi_link.mcb_objp = NULL; 239 mpip->mpi_mi_link.mcb_objsize = 0; 240 241 ASSERT(mpip->mpi_mci_link.mcb_flags == 0); 242 mpip->mpi_mci_link.mcb_objsize = 0; 243 } 244 245 void 246 mac_client_init(void) 247 { 248 ASSERT(mac_tx_percpu_cnt >= 0); 249 250 mac_client_impl_cache = kmem_cache_create("mac_client_impl_cache", 251 MAC_CLIENT_IMPL_SIZE, 0, i_mac_client_impl_ctor, 252 i_mac_client_impl_dtor, NULL, NULL, NULL, 0); 253 ASSERT(mac_client_impl_cache != NULL); 254 255 mac_promisc_impl_cache = kmem_cache_create("mac_promisc_impl_cache", 256 sizeof (mac_promisc_impl_t), 0, i_mac_promisc_impl_ctor, 257 i_mac_promisc_impl_dtor, NULL, NULL, NULL, 0); 258 ASSERT(mac_promisc_impl_cache != NULL); 259 } 260 261 void 262 mac_client_fini(void) 263 { 264 kmem_cache_destroy(mac_client_impl_cache); 265 kmem_cache_destroy(mac_promisc_impl_cache); 266 } 267 268 /* 269 * Return the lower MAC client handle from the VNIC driver for the 270 * specified VNIC MAC instance. 271 */ 272 mac_client_impl_t * 273 mac_vnic_lower(mac_impl_t *mip) 274 { 275 mac_capab_vnic_t cap; 276 mac_client_impl_t *mcip; 277 278 VERIFY(i_mac_capab_get((mac_handle_t)mip, MAC_CAPAB_VNIC, &cap)); 279 mcip = cap.mcv_mac_client_handle(cap.mcv_arg); 280 281 return (mcip); 282 } 283 284 /* 285 * Update the secondary macs 286 */ 287 void 288 mac_vnic_secondary_update(mac_impl_t *mip) 289 { 290 mac_capab_vnic_t cap; 291 292 VERIFY(i_mac_capab_get((mac_handle_t)mip, MAC_CAPAB_VNIC, &cap)); 293 cap.mcv_mac_secondary_update(cap.mcv_arg); 294 } 295 296 /* 297 * Return the MAC client handle of the primary MAC client for the 298 * specified MAC instance, or NULL otherwise. 299 */ 300 mac_client_impl_t * 301 mac_primary_client_handle(mac_impl_t *mip) 302 { 303 mac_client_impl_t *mcip; 304 305 if (mip->mi_state_flags & MIS_IS_VNIC) 306 return (mac_vnic_lower(mip)); 307 308 ASSERT(MAC_PERIM_HELD((mac_handle_t)mip)); 309 310 for (mcip = mip->mi_clients_list; mcip != NULL; 311 mcip = mcip->mci_client_next) { 312 if (MCIP_DATAPATH_SETUP(mcip) && mac_is_primary_client(mcip)) 313 return (mcip); 314 } 315 return (NULL); 316 } 317 318 /* 319 * Open a MAC specified by its MAC name. 320 */ 321 int 322 mac_open(const char *macname, mac_handle_t *mhp) 323 { 324 mac_impl_t *mip; 325 int err; 326 327 /* 328 * Look up its entry in the global hash table. 329 */ 330 if ((err = mac_hold(macname, &mip)) != 0) 331 return (err); 332 333 /* 334 * Hold the dip associated to the MAC to prevent it from being 335 * detached. For a softmac, its underlying dip is held by the 336 * mi_open() callback. 337 * 338 * This is done to be more tolerant with some defective drivers, 339 * which incorrectly handle mac_unregister() failure in their 340 * xxx_detach() routine. For example, some drivers ignore the 341 * failure of mac_unregister() and free all resources that 342 * that are needed for data transmition. 343 */ 344 e_ddi_hold_devi(mip->mi_dip); 345 346 if (!(mip->mi_callbacks->mc_callbacks & MC_OPEN)) { 347 *mhp = (mac_handle_t)mip; 348 return (0); 349 } 350 351 /* 352 * The mac perimeter is used in both mac_open and mac_close by the 353 * framework to single thread the MC_OPEN/MC_CLOSE of drivers. 354 */ 355 i_mac_perim_enter(mip); 356 mip->mi_oref++; 357 if (mip->mi_oref != 1 || ((err = mip->mi_open(mip->mi_driver)) == 0)) { 358 *mhp = (mac_handle_t)mip; 359 i_mac_perim_exit(mip); 360 return (0); 361 } 362 mip->mi_oref--; 363 ddi_release_devi(mip->mi_dip); 364 mac_rele(mip); 365 i_mac_perim_exit(mip); 366 return (err); 367 } 368 369 /* 370 * Open a MAC specified by its linkid. 371 */ 372 int 373 mac_open_by_linkid(datalink_id_t linkid, mac_handle_t *mhp) 374 { 375 dls_dl_handle_t dlh; 376 int err; 377 378 if ((err = dls_devnet_hold_tmp(linkid, &dlh)) != 0) 379 return (err); 380 381 dls_devnet_prop_task_wait(dlh); 382 383 err = mac_open(dls_devnet_mac(dlh), mhp); 384 385 dls_devnet_rele_tmp(dlh); 386 return (err); 387 } 388 389 /* 390 * Open a MAC specified by its link name. 391 */ 392 int 393 mac_open_by_linkname(const char *link, mac_handle_t *mhp) 394 { 395 datalink_id_t linkid; 396 int err; 397 398 if ((err = dls_mgmt_get_linkid(link, &linkid)) != 0) 399 return (err); 400 return (mac_open_by_linkid(linkid, mhp)); 401 } 402 403 /* 404 * Close the specified MAC. 405 */ 406 void 407 mac_close(mac_handle_t mh) 408 { 409 mac_impl_t *mip = (mac_impl_t *)mh; 410 411 i_mac_perim_enter(mip); 412 /* 413 * The mac perimeter is used in both mac_open and mac_close by the 414 * framework to single thread the MC_OPEN/MC_CLOSE of drivers. 415 */ 416 if (mip->mi_callbacks->mc_callbacks & MC_OPEN) { 417 ASSERT(mip->mi_oref != 0); 418 if (--mip->mi_oref == 0) { 419 if ((mip->mi_callbacks->mc_callbacks & MC_CLOSE)) 420 mip->mi_close(mip->mi_driver); 421 } 422 } 423 i_mac_perim_exit(mip); 424 ddi_release_devi(mip->mi_dip); 425 mac_rele(mip); 426 } 427 428 /* 429 * Misc utility functions to retrieve various information about a MAC 430 * instance or a MAC client. 431 */ 432 433 const mac_info_t * 434 mac_info(mac_handle_t mh) 435 { 436 return (&((mac_impl_t *)mh)->mi_info); 437 } 438 439 dev_info_t * 440 mac_devinfo_get(mac_handle_t mh) 441 { 442 return (((mac_impl_t *)mh)->mi_dip); 443 } 444 445 void * 446 mac_driver(mac_handle_t mh) 447 { 448 return (((mac_impl_t *)mh)->mi_driver); 449 } 450 451 const char * 452 mac_name(mac_handle_t mh) 453 { 454 return (((mac_impl_t *)mh)->mi_name); 455 } 456 457 int 458 mac_type(mac_handle_t mh) 459 { 460 return (((mac_impl_t *)mh)->mi_type->mt_type); 461 } 462 463 int 464 mac_nativetype(mac_handle_t mh) 465 { 466 return (((mac_impl_t *)mh)->mi_type->mt_nativetype); 467 } 468 469 char * 470 mac_client_name(mac_client_handle_t mch) 471 { 472 return (((mac_client_impl_t *)mch)->mci_name); 473 } 474 475 minor_t 476 mac_minor(mac_handle_t mh) 477 { 478 return (((mac_impl_t *)mh)->mi_minor); 479 } 480 481 /* 482 * Return the VID associated with a MAC client. This function should 483 * be called for clients which are associated with only one VID. 484 */ 485 uint16_t 486 mac_client_vid(mac_client_handle_t mch) 487 { 488 uint16_t vid = VLAN_ID_NONE; 489 mac_client_impl_t *mcip = (mac_client_impl_t *)mch; 490 flow_desc_t flow_desc; 491 492 if (mcip->mci_nflents == 0) 493 return (vid); 494 495 ASSERT(MCIP_DATAPATH_SETUP(mcip) && mac_client_single_rcvr(mcip)); 496 497 mac_flow_get_desc(mcip->mci_flent, &flow_desc); 498 if ((flow_desc.fd_mask & FLOW_LINK_VID) != 0) 499 vid = flow_desc.fd_vid; 500 501 return (vid); 502 } 503 504 /* 505 * Return whether the specified MAC client corresponds to a VLAN VNIC. 506 */ 507 boolean_t 508 mac_client_is_vlan_vnic(mac_client_handle_t mch) 509 { 510 mac_client_impl_t *mcip = (mac_client_impl_t *)mch; 511 512 return (((mcip->mci_state_flags & MCIS_IS_VNIC) != 0) && 513 ((mcip->mci_flent->fe_type & FLOW_PRIMARY_MAC) != 0)); 514 } 515 516 /* 517 * Return the link speed associated with the specified MAC client. 518 * 519 * The link speed of a MAC client is equal to the smallest value of 520 * 1) the current link speed of the underlying NIC, or 521 * 2) the bandwidth limit set for the MAC client. 522 * 523 * Note that the bandwidth limit can be higher than the speed 524 * of the underlying NIC. This is allowed to avoid spurious 525 * administration action failures or artifically lowering the 526 * bandwidth limit of a link that may have temporarily lowered 527 * its link speed due to hardware problem or administrator action. 528 */ 529 static uint64_t 530 mac_client_ifspeed(mac_client_impl_t *mcip) 531 { 532 mac_impl_t *mip = mcip->mci_mip; 533 uint64_t nic_speed; 534 535 nic_speed = mac_stat_get((mac_handle_t)mip, MAC_STAT_IFSPEED); 536 537 if (nic_speed == 0) { 538 return (0); 539 } else { 540 uint64_t policy_limit = (uint64_t)-1; 541 542 if (MCIP_RESOURCE_PROPS_MASK(mcip) & MRP_MAXBW) 543 policy_limit = MCIP_RESOURCE_PROPS_MAXBW(mcip); 544 545 return (MIN(policy_limit, nic_speed)); 546 } 547 } 548 549 /* 550 * Return the link state of the specified client. If here are more 551 * than one clients of the underying mac_impl_t, the link state 552 * will always be UP regardless of the link state of the underlying 553 * mac_impl_t. This is needed to allow the MAC clients to continue 554 * to communicate with each other even when the physical link of 555 * their mac_impl_t is down. 556 */ 557 static uint64_t 558 mac_client_link_state(mac_client_impl_t *mcip) 559 { 560 mac_impl_t *mip = mcip->mci_mip; 561 uint16_t vid; 562 mac_client_impl_t *mci_list; 563 mac_unicast_impl_t *mui_list, *oth_mui_list; 564 565 /* 566 * Returns LINK_STATE_UP if there are other MAC clients defined on 567 * mac_impl_t which share same VLAN ID as that of mcip. Note that 568 * if 'mcip' has more than one VID's then we match ANY one of the 569 * VID's with other MAC client's VID's and return LINK_STATE_UP. 570 */ 571 rw_enter(&mcip->mci_rw_lock, RW_READER); 572 for (mui_list = mcip->mci_unicast_list; mui_list != NULL; 573 mui_list = mui_list->mui_next) { 574 vid = mui_list->mui_vid; 575 for (mci_list = mip->mi_clients_list; mci_list != NULL; 576 mci_list = mci_list->mci_client_next) { 577 if (mci_list == mcip) 578 continue; 579 for (oth_mui_list = mci_list->mci_unicast_list; 580 oth_mui_list != NULL; oth_mui_list = oth_mui_list-> 581 mui_next) { 582 if (vid == oth_mui_list->mui_vid) { 583 rw_exit(&mcip->mci_rw_lock); 584 return (LINK_STATE_UP); 585 } 586 } 587 } 588 } 589 rw_exit(&mcip->mci_rw_lock); 590 591 return (mac_stat_get((mac_handle_t)mip, MAC_STAT_LINK_STATE)); 592 } 593 594 /* 595 * These statistics are consumed by dladm show-link -s <vnic>, 596 * dladm show-vnic -s and netstat. With the introduction of dlstat, 597 * dladm show-link -s and dladm show-vnic -s witll be EOL'ed while 598 * netstat will consume from kstats introduced for dlstat. This code 599 * will be removed at that time. 600 */ 601 602 /* 603 * Return the statistics of a MAC client. These statistics are different 604 * then the statistics of the underlying MAC which are returned by 605 * mac_stat_get(). 606 * 607 * Note that for things based on the tx and rx stats, mac will end up clobbering 608 * those stats when the underlying set of rings in the srs changes. As such, we 609 * need to source not only the current set, but also the historical set when 610 * returning to the client, lest our counters appear to go backwards. 611 */ 612 uint64_t 613 mac_client_stat_get(mac_client_handle_t mch, uint_t stat) 614 { 615 mac_client_impl_t *mcip = (mac_client_impl_t *)mch; 616 mac_impl_t *mip = mcip->mci_mip; 617 flow_entry_t *flent = mcip->mci_flent; 618 mac_soft_ring_set_t *mac_srs; 619 mac_rx_stats_t *mac_rx_stat, *old_rx_stat; 620 mac_tx_stats_t *mac_tx_stat, *old_tx_stat; 621 int i; 622 uint64_t val = 0; 623 624 mac_srs = (mac_soft_ring_set_t *)(flent->fe_tx_srs); 625 mac_tx_stat = &mac_srs->srs_tx.st_stat; 626 old_rx_stat = &mcip->mci_misc_stat.mms_defunctrxlanestats; 627 old_tx_stat = &mcip->mci_misc_stat.mms_defuncttxlanestats; 628 629 switch (stat) { 630 case MAC_STAT_LINK_STATE: 631 val = mac_client_link_state(mcip); 632 break; 633 case MAC_STAT_LINK_UP: 634 val = (mac_client_link_state(mcip) == LINK_STATE_UP); 635 break; 636 case MAC_STAT_PROMISC: 637 val = mac_stat_get((mac_handle_t)mip, MAC_STAT_PROMISC); 638 break; 639 case MAC_STAT_LOWLINK_STATE: 640 val = mac_stat_get((mac_handle_t)mip, MAC_STAT_LOWLINK_STATE); 641 break; 642 case MAC_STAT_IFSPEED: 643 val = mac_client_ifspeed(mcip); 644 break; 645 case MAC_STAT_MULTIRCV: 646 val = mcip->mci_misc_stat.mms_multircv; 647 break; 648 case MAC_STAT_BRDCSTRCV: 649 val = mcip->mci_misc_stat.mms_brdcstrcv; 650 break; 651 case MAC_STAT_MULTIXMT: 652 val = mcip->mci_misc_stat.mms_multixmt; 653 break; 654 case MAC_STAT_BRDCSTXMT: 655 val = mcip->mci_misc_stat.mms_brdcstxmt; 656 break; 657 case MAC_STAT_OBYTES: 658 val = mac_tx_stat->mts_obytes; 659 val += old_tx_stat->mts_obytes; 660 break; 661 case MAC_STAT_OPACKETS: 662 val = mac_tx_stat->mts_opackets; 663 val += old_tx_stat->mts_opackets; 664 break; 665 case MAC_STAT_OERRORS: 666 val = mac_tx_stat->mts_oerrors; 667 val += old_tx_stat->mts_oerrors; 668 break; 669 case MAC_STAT_IPACKETS: 670 for (i = 0; i < flent->fe_rx_srs_cnt; i++) { 671 mac_srs = (mac_soft_ring_set_t *)flent->fe_rx_srs[i]; 672 mac_rx_stat = &mac_srs->srs_rx.sr_stat; 673 val += mac_rx_stat->mrs_intrcnt + 674 mac_rx_stat->mrs_pollcnt + mac_rx_stat->mrs_lclcnt; 675 } 676 val += old_rx_stat->mrs_intrcnt + old_rx_stat->mrs_pollcnt + 677 old_rx_stat->mrs_lclcnt; 678 break; 679 case MAC_STAT_RBYTES: 680 for (i = 0; i < flent->fe_rx_srs_cnt; i++) { 681 mac_srs = (mac_soft_ring_set_t *)flent->fe_rx_srs[i]; 682 mac_rx_stat = &mac_srs->srs_rx.sr_stat; 683 val += mac_rx_stat->mrs_intrbytes + 684 mac_rx_stat->mrs_pollbytes + 685 mac_rx_stat->mrs_lclbytes; 686 } 687 val += old_rx_stat->mrs_intrbytes + old_rx_stat->mrs_pollbytes + 688 old_rx_stat->mrs_lclbytes; 689 break; 690 case MAC_STAT_IERRORS: 691 for (i = 0; i < flent->fe_rx_srs_cnt; i++) { 692 mac_srs = (mac_soft_ring_set_t *)flent->fe_rx_srs[i]; 693 mac_rx_stat = &mac_srs->srs_rx.sr_stat; 694 val += mac_rx_stat->mrs_ierrors; 695 } 696 val += old_rx_stat->mrs_ierrors; 697 break; 698 default: 699 val = mac_driver_stat_default(mip, stat); 700 break; 701 } 702 703 return (val); 704 } 705 706 /* 707 * Return the statistics of the specified MAC instance. 708 */ 709 uint64_t 710 mac_stat_get(mac_handle_t mh, uint_t stat) 711 { 712 mac_impl_t *mip = (mac_impl_t *)mh; 713 uint64_t val; 714 int ret; 715 716 /* 717 * The range of stat determines where it is maintained. Stat 718 * values from 0 up to (but not including) MAC_STAT_MIN are 719 * mainteined by the mac module itself. Everything else is 720 * maintained by the driver. 721 * 722 * If the mac_impl_t being queried corresponds to a VNIC, 723 * the stats need to be queried from the lower MAC client 724 * corresponding to the VNIC. (The mac_link_update() 725 * invoked by the driver to the lower MAC causes the *lower 726 * MAC* to update its mi_linkstate, and send a notification 727 * to its MAC clients. Due to the VNIC passthrough, 728 * these notifications are sent to the upper MAC clients 729 * of the VNIC directly, and the upper mac_impl_t of the VNIC 730 * does not have a valid mi_linkstate. 731 */ 732 if (stat < MAC_STAT_MIN && !(mip->mi_state_flags & MIS_IS_VNIC)) { 733 /* these stats are maintained by the mac module itself */ 734 switch (stat) { 735 case MAC_STAT_LINK_STATE: 736 return (mip->mi_linkstate); 737 case MAC_STAT_LINK_UP: 738 return (mip->mi_linkstate == LINK_STATE_UP); 739 case MAC_STAT_PROMISC: 740 return (mip->mi_devpromisc != 0); 741 case MAC_STAT_LOWLINK_STATE: 742 return (mip->mi_lowlinkstate); 743 default: 744 ASSERT(B_FALSE); 745 } 746 } 747 748 /* 749 * Call the driver to get the given statistic. 750 */ 751 ret = mip->mi_getstat(mip->mi_driver, stat, &val); 752 if (ret != 0) { 753 /* 754 * The driver doesn't support this statistic. Get the 755 * statistic's default value. 756 */ 757 val = mac_driver_stat_default(mip, stat); 758 } 759 return (val); 760 } 761 762 /* 763 * Query hardware rx ring corresponding to the pseudo ring. 764 */ 765 uint64_t 766 mac_pseudo_rx_ring_stat_get(mac_ring_handle_t handle, uint_t stat) 767 { 768 return (mac_rx_ring_stat_get(handle, stat)); 769 } 770 771 /* 772 * Query hardware tx ring corresponding to the pseudo ring. 773 */ 774 uint64_t 775 mac_pseudo_tx_ring_stat_get(mac_ring_handle_t handle, uint_t stat) 776 { 777 return (mac_tx_ring_stat_get(handle, stat)); 778 } 779 780 /* 781 * Utility function which returns the VID associated with a flow entry. 782 */ 783 uint16_t 784 i_mac_flow_vid(flow_entry_t *flent) 785 { 786 flow_desc_t flow_desc; 787 788 mac_flow_get_desc(flent, &flow_desc); 789 790 if ((flow_desc.fd_mask & FLOW_LINK_VID) != 0) 791 return (flow_desc.fd_vid); 792 return (VLAN_ID_NONE); 793 } 794 795 /* 796 * Verify the validity of the specified unicast MAC address. Returns B_TRUE 797 * if the address is valid, B_FALSE otherwise (multicast address, or incorrect 798 * length. 799 */ 800 boolean_t 801 mac_unicst_verify(mac_handle_t mh, const uint8_t *addr, uint_t len) 802 { 803 mac_impl_t *mip = (mac_impl_t *)mh; 804 805 /* 806 * Verify the address. No lock is needed since mi_type and plugin 807 * details don't change after mac_register(). 808 */ 809 if ((len != mip->mi_type->mt_addr_length) || 810 (mip->mi_type->mt_ops.mtops_unicst_verify(addr, 811 mip->mi_pdata)) != 0) { 812 return (B_FALSE); 813 } else { 814 return (B_TRUE); 815 } 816 } 817 818 void 819 mac_sdu_get(mac_handle_t mh, uint_t *min_sdu, uint_t *max_sdu) 820 { 821 mac_impl_t *mip = (mac_impl_t *)mh; 822 823 if (min_sdu != NULL) 824 *min_sdu = mip->mi_sdu_min; 825 if (max_sdu != NULL) 826 *max_sdu = mip->mi_sdu_max; 827 } 828 829 void 830 mac_sdu_get2(mac_handle_t mh, uint_t *min_sdu, uint_t *max_sdu, 831 uint_t *multicast_sdu) 832 { 833 mac_impl_t *mip = (mac_impl_t *)mh; 834 835 if (min_sdu != NULL) 836 *min_sdu = mip->mi_sdu_min; 837 if (max_sdu != NULL) 838 *max_sdu = mip->mi_sdu_max; 839 if (multicast_sdu != NULL) 840 *multicast_sdu = mip->mi_sdu_multicast; 841 } 842 843 /* 844 * Update the MAC unicast address of the specified client's flows. Currently 845 * only one unicast MAC unicast address is allowed per client. 846 */ 847 static void 848 mac_unicast_update_client_flow(mac_client_impl_t *mcip) 849 { 850 mac_impl_t *mip = mcip->mci_mip; 851 flow_entry_t *flent = mcip->mci_flent; 852 mac_address_t *map = mcip->mci_unicast; 853 flow_desc_t flow_desc; 854 855 ASSERT(MAC_PERIM_HELD((mac_handle_t)mip)); 856 ASSERT(flent != NULL); 857 858 mac_flow_get_desc(flent, &flow_desc); 859 ASSERT(flow_desc.fd_mask & FLOW_LINK_DST); 860 861 bcopy(map->ma_addr, flow_desc.fd_dst_mac, map->ma_len); 862 mac_flow_set_desc(flent, &flow_desc); 863 864 /* 865 * The v6 local and SLAAC addrs (used by mac protection) need to be 866 * regenerated because our mac address has changed. 867 */ 868 mac_protect_update_mac_token(mcip); 869 870 /* 871 * When there are multiple VLANs sharing the same MAC address, 872 * each gets its own MAC client, except when running on sun4v 873 * vsw. In that case the mci_flent_list is used to place 874 * multiple VLAN flows on one MAC client. If we ever get rid 875 * of vsw then this code can go, but until then we need to 876 * update all flow entries. 877 */ 878 for (flent = mcip->mci_flent_list; flent != NULL; 879 flent = flent->fe_client_next) { 880 mac_flow_get_desc(flent, &flow_desc); 881 if (!(flent->fe_type & FLOW_PRIMARY_MAC || 882 flent->fe_type & FLOW_VNIC_MAC)) 883 continue; 884 885 bcopy(map->ma_addr, flow_desc.fd_dst_mac, map->ma_len); 886 mac_flow_set_desc(flent, &flow_desc); 887 } 888 } 889 890 /* 891 * Update all clients that share the same unicast address. 892 */ 893 void 894 mac_unicast_update_clients(mac_impl_t *mip, mac_address_t *map) 895 { 896 mac_client_impl_t *mcip; 897 898 ASSERT(MAC_PERIM_HELD((mac_handle_t)mip)); 899 900 /* 901 * Find all clients that share the same unicast MAC address and update 902 * them appropriately. 903 */ 904 for (mcip = mip->mi_clients_list; mcip != NULL; 905 mcip = mcip->mci_client_next) { 906 /* 907 * Ignore clients that don't share this MAC address. 908 */ 909 if (map != mcip->mci_unicast) 910 continue; 911 912 /* 913 * Update those clients with same old unicast MAC address. 914 */ 915 mac_unicast_update_client_flow(mcip); 916 } 917 } 918 919 /* 920 * Update the unicast MAC address of the specified VNIC MAC client. 921 * 922 * Check whether the operation is valid. Any of following cases should fail: 923 * 924 * 1. It's a VLAN type of VNIC. 925 * 2. The new value is current "primary" MAC address. 926 * 3. The current MAC address is shared with other clients. 927 * 4. The new MAC address has been used. This case will be valid when 928 * client migration is fully supported. 929 */ 930 int 931 mac_vnic_unicast_set(mac_client_handle_t mch, const uint8_t *addr) 932 { 933 mac_client_impl_t *mcip = (mac_client_impl_t *)mch; 934 mac_impl_t *mip = mcip->mci_mip; 935 mac_address_t *map = mcip->mci_unicast; 936 int err; 937 938 ASSERT(!(mip->mi_state_flags & MIS_IS_VNIC)); 939 ASSERT(mcip->mci_state_flags & MCIS_IS_VNIC); 940 ASSERT(mcip->mci_flags != MAC_CLIENT_FLAGS_PRIMARY); 941 942 i_mac_perim_enter(mip); 943 944 /* 945 * If this is a VLAN type of VNIC, it's using "primary" MAC address 946 * of the underlying interface. Must fail here. Refer to case 1 above. 947 */ 948 if (bcmp(map->ma_addr, mip->mi_addr, map->ma_len) == 0) { 949 i_mac_perim_exit(mip); 950 return (ENOTSUP); 951 } 952 953 /* 954 * If the new address is the "primary" one, must fail. Refer to 955 * case 2 above. 956 */ 957 if (bcmp(addr, mip->mi_addr, map->ma_len) == 0) { 958 i_mac_perim_exit(mip); 959 return (EACCES); 960 } 961 962 /* 963 * If the address is shared by multiple clients, must fail. Refer 964 * to case 3 above. 965 */ 966 if (mac_check_macaddr_shared(map)) { 967 i_mac_perim_exit(mip); 968 return (EBUSY); 969 } 970 971 /* 972 * If the new address has been used, must fail for now. Refer to 973 * case 4 above. 974 */ 975 if (mac_find_macaddr(mip, (uint8_t *)addr) != NULL) { 976 i_mac_perim_exit(mip); 977 return (ENOTSUP); 978 } 979 980 /* 981 * Update the MAC address. 982 */ 983 err = mac_update_macaddr(map, (uint8_t *)addr); 984 985 if (err != 0) { 986 i_mac_perim_exit(mip); 987 return (err); 988 } 989 990 /* 991 * Update all flows of this MAC client. 992 */ 993 mac_unicast_update_client_flow(mcip); 994 995 i_mac_perim_exit(mip); 996 return (0); 997 } 998 999 /* 1000 * Program the new primary unicast address of the specified MAC. 1001 * 1002 * Function mac_update_macaddr() takes care different types of underlying 1003 * MAC. If the underlying MAC is VNIC, the VNIC driver must have registerd 1004 * mi_unicst() entry point, that indirectly calls mac_vnic_unicast_set() 1005 * which will take care of updating the MAC address of the corresponding 1006 * MAC client. 1007 * 1008 * This is the only interface that allow the client to update the "primary" 1009 * MAC address of the underlying MAC. The new value must have not been 1010 * used by other clients. 1011 */ 1012 int 1013 mac_unicast_primary_set(mac_handle_t mh, const uint8_t *addr) 1014 { 1015 mac_impl_t *mip = (mac_impl_t *)mh; 1016 mac_address_t *map; 1017 int err; 1018 1019 /* verify the address validity */ 1020 if (!mac_unicst_verify(mh, addr, mip->mi_type->mt_addr_length)) 1021 return (EINVAL); 1022 1023 i_mac_perim_enter(mip); 1024 1025 /* 1026 * If the new value is the same as the current primary address value, 1027 * there's nothing to do. 1028 */ 1029 if (bcmp(addr, mip->mi_addr, mip->mi_type->mt_addr_length) == 0) { 1030 i_mac_perim_exit(mip); 1031 return (0); 1032 } 1033 1034 if (mac_find_macaddr(mip, (uint8_t *)addr) != NULL) { 1035 i_mac_perim_exit(mip); 1036 return (EBUSY); 1037 } 1038 1039 map = mac_find_macaddr(mip, mip->mi_addr); 1040 ASSERT(map != NULL); 1041 1042 /* 1043 * Update the MAC address. 1044 */ 1045 if (mip->mi_state_flags & MIS_IS_AGGR) { 1046 mac_capab_aggr_t aggr_cap; 1047 1048 /* 1049 * If the MAC is an aggregation, other than the unicast 1050 * addresses programming, aggr must be informed about this 1051 * primary unicst address change to change its MAC address 1052 * policy to be user-specified. 1053 */ 1054 ASSERT(map->ma_type == MAC_ADDRESS_TYPE_UNICAST_CLASSIFIED); 1055 VERIFY(i_mac_capab_get(mh, MAC_CAPAB_AGGR, &aggr_cap)); 1056 err = aggr_cap.mca_unicst(mip->mi_driver, addr); 1057 if (err == 0) 1058 bcopy(addr, map->ma_addr, map->ma_len); 1059 } else { 1060 err = mac_update_macaddr(map, (uint8_t *)addr); 1061 } 1062 1063 if (err != 0) { 1064 i_mac_perim_exit(mip); 1065 return (err); 1066 } 1067 1068 mac_unicast_update_clients(mip, map); 1069 1070 /* 1071 * Save the new primary MAC address in mac_impl_t. 1072 */ 1073 bcopy(addr, mip->mi_addr, mip->mi_type->mt_addr_length); 1074 1075 i_mac_perim_exit(mip); 1076 1077 if (err == 0) 1078 i_mac_notify(mip, MAC_NOTE_UNICST); 1079 1080 return (err); 1081 } 1082 1083 /* 1084 * Return the current primary MAC address of the specified MAC. 1085 */ 1086 void 1087 mac_unicast_primary_get(mac_handle_t mh, uint8_t *addr) 1088 { 1089 mac_impl_t *mip = (mac_impl_t *)mh; 1090 1091 rw_enter(&mip->mi_rw_lock, RW_READER); 1092 bcopy(mip->mi_addr, addr, mip->mi_type->mt_addr_length); 1093 rw_exit(&mip->mi_rw_lock); 1094 } 1095 1096 /* 1097 * Return the secondary MAC address for the specified handle 1098 */ 1099 void 1100 mac_unicast_secondary_get(mac_client_handle_t mh, uint8_t *addr) 1101 { 1102 mac_client_impl_t *mcip = (mac_client_impl_t *)mh; 1103 1104 ASSERT(mcip->mci_unicast != NULL); 1105 bcopy(mcip->mci_unicast->ma_addr, addr, mcip->mci_unicast->ma_len); 1106 } 1107 1108 /* 1109 * Return information about the use of the primary MAC address of the 1110 * specified MAC instance: 1111 * 1112 * - if client_name is non-NULL, it must point to a string of at 1113 * least MAXNAMELEN bytes, and will be set to the name of the MAC 1114 * client which uses the primary MAC address. 1115 * 1116 * - if in_use is non-NULL, used to return whether the primary MAC 1117 * address is currently in use. 1118 */ 1119 void 1120 mac_unicast_primary_info(mac_handle_t mh, char *client_name, boolean_t *in_use) 1121 { 1122 mac_impl_t *mip = (mac_impl_t *)mh; 1123 mac_client_impl_t *cur_client; 1124 1125 if (in_use != NULL) 1126 *in_use = B_FALSE; 1127 if (client_name != NULL) 1128 bzero(client_name, MAXNAMELEN); 1129 1130 /* 1131 * The mi_rw_lock is used to protect threads that don't hold the 1132 * mac perimeter to get a consistent view of the mi_clients_list. 1133 * Threads that modify the list must hold both the mac perimeter and 1134 * mi_rw_lock(RW_WRITER) 1135 */ 1136 rw_enter(&mip->mi_rw_lock, RW_READER); 1137 for (cur_client = mip->mi_clients_list; cur_client != NULL; 1138 cur_client = cur_client->mci_client_next) { 1139 if (mac_is_primary_client(cur_client) || 1140 (mip->mi_state_flags & MIS_IS_VNIC)) { 1141 rw_exit(&mip->mi_rw_lock); 1142 if (in_use != NULL) 1143 *in_use = B_TRUE; 1144 if (client_name != NULL) { 1145 bcopy(cur_client->mci_name, client_name, 1146 MAXNAMELEN); 1147 } 1148 return; 1149 } 1150 } 1151 rw_exit(&mip->mi_rw_lock); 1152 } 1153 1154 /* 1155 * Return the current destination MAC address of the specified MAC. 1156 */ 1157 boolean_t 1158 mac_dst_get(mac_handle_t mh, uint8_t *addr) 1159 { 1160 mac_impl_t *mip = (mac_impl_t *)mh; 1161 1162 rw_enter(&mip->mi_rw_lock, RW_READER); 1163 if (mip->mi_dstaddr_set) 1164 bcopy(mip->mi_dstaddr, addr, mip->mi_type->mt_addr_length); 1165 rw_exit(&mip->mi_rw_lock); 1166 return (mip->mi_dstaddr_set); 1167 } 1168 1169 /* 1170 * Add the specified MAC client to the list of clients which opened 1171 * the specified MAC. 1172 */ 1173 static void 1174 mac_client_add(mac_client_impl_t *mcip) 1175 { 1176 mac_impl_t *mip = mcip->mci_mip; 1177 1178 ASSERT(MAC_PERIM_HELD((mac_handle_t)mip)); 1179 1180 /* add VNIC to the front of the list */ 1181 rw_enter(&mip->mi_rw_lock, RW_WRITER); 1182 mcip->mci_client_next = mip->mi_clients_list; 1183 mip->mi_clients_list = mcip; 1184 mip->mi_nclients++; 1185 rw_exit(&mip->mi_rw_lock); 1186 } 1187 1188 /* 1189 * Remove the specified MAC client from the list of clients which opened 1190 * the specified MAC. 1191 */ 1192 static void 1193 mac_client_remove(mac_client_impl_t *mcip) 1194 { 1195 mac_impl_t *mip = mcip->mci_mip; 1196 mac_client_impl_t **prev, *cclient; 1197 1198 ASSERT(MAC_PERIM_HELD((mac_handle_t)mip)); 1199 1200 rw_enter(&mip->mi_rw_lock, RW_WRITER); 1201 prev = &mip->mi_clients_list; 1202 cclient = *prev; 1203 while (cclient != NULL && cclient != mcip) { 1204 prev = &cclient->mci_client_next; 1205 cclient = *prev; 1206 } 1207 ASSERT(cclient != NULL); 1208 *prev = cclient->mci_client_next; 1209 mip->mi_nclients--; 1210 rw_exit(&mip->mi_rw_lock); 1211 } 1212 1213 static mac_unicast_impl_t * 1214 mac_client_find_vid(mac_client_impl_t *mcip, uint16_t vid) 1215 { 1216 mac_unicast_impl_t *muip = mcip->mci_unicast_list; 1217 1218 while ((muip != NULL) && (muip->mui_vid != vid)) 1219 muip = muip->mui_next; 1220 1221 return (muip); 1222 } 1223 1224 /* 1225 * Return whether the specified (MAC address, VID) tuple is already used by 1226 * one of the MAC clients associated with the specified MAC. 1227 */ 1228 static boolean_t 1229 mac_addr_in_use(mac_impl_t *mip, uint8_t *mac_addr, uint16_t vid) 1230 { 1231 mac_client_impl_t *client; 1232 mac_address_t *map; 1233 1234 ASSERT(MAC_PERIM_HELD((mac_handle_t)mip)); 1235 1236 for (client = mip->mi_clients_list; client != NULL; 1237 client = client->mci_client_next) { 1238 1239 /* 1240 * Ignore clients that don't have unicast address. 1241 */ 1242 if (client->mci_unicast_list == NULL) 1243 continue; 1244 1245 map = client->mci_unicast; 1246 1247 if ((bcmp(mac_addr, map->ma_addr, map->ma_len) == 0) && 1248 (mac_client_find_vid(client, vid) != NULL)) { 1249 return (B_TRUE); 1250 } 1251 } 1252 1253 return (B_FALSE); 1254 } 1255 1256 /* 1257 * Generate a random MAC address. The MAC address prefix is 1258 * stored in the array pointed to by mac_addr, and its length, in bytes, 1259 * is specified by prefix_len. The least significant bits 1260 * after prefix_len bytes are generated, and stored after the prefix 1261 * in the mac_addr array. 1262 */ 1263 int 1264 mac_addr_random(mac_client_handle_t mch, uint_t prefix_len, 1265 uint8_t *mac_addr, mac_diag_t *diag) 1266 { 1267 mac_client_impl_t *mcip = (mac_client_impl_t *)mch; 1268 mac_impl_t *mip = mcip->mci_mip; 1269 size_t addr_len = mip->mi_type->mt_addr_length; 1270 1271 if (prefix_len >= addr_len) { 1272 *diag = MAC_DIAG_MACPREFIXLEN_INVALID; 1273 return (EINVAL); 1274 } 1275 1276 /* check the prefix value */ 1277 if (prefix_len > 0) { 1278 bzero(mac_addr + prefix_len, addr_len - prefix_len); 1279 if (!mac_unicst_verify((mac_handle_t)mip, mac_addr, 1280 addr_len)) { 1281 *diag = MAC_DIAG_MACPREFIX_INVALID; 1282 return (EINVAL); 1283 } 1284 } 1285 1286 /* generate the MAC address */ 1287 if (prefix_len < addr_len) { 1288 (void) random_get_pseudo_bytes(mac_addr + 1289 prefix_len, addr_len - prefix_len); 1290 } 1291 1292 *diag = MAC_DIAG_NONE; 1293 return (0); 1294 } 1295 1296 /* 1297 * Set the priority range for this MAC client. This will be used to 1298 * determine the absolute priority for the threads created for this 1299 * MAC client using the specified "low", "medium" and "high" level. 1300 * This will also be used for any subflows on this MAC client. 1301 */ 1302 #define MAC_CLIENT_SET_PRIORITY_RANGE(mcip, pri) { \ 1303 (mcip)->mci_min_pri = FLOW_MIN_PRIORITY(MINCLSYSPRI, \ 1304 MAXCLSYSPRI, (pri)); \ 1305 (mcip)->mci_max_pri = FLOW_MAX_PRIORITY(MINCLSYSPRI, \ 1306 MAXCLSYSPRI, (mcip)->mci_min_pri); \ 1307 } 1308 1309 /* 1310 * MAC client open entry point. Return a new MAC client handle. Each 1311 * MAC client is associated with a name, specified through the 'name' 1312 * argument. 1313 */ 1314 int 1315 mac_client_open(mac_handle_t mh, mac_client_handle_t *mchp, char *name, 1316 uint16_t flags) 1317 { 1318 mac_impl_t *mip = (mac_impl_t *)mh; 1319 mac_client_impl_t *mcip; 1320 int err = 0; 1321 boolean_t share_desired; 1322 flow_entry_t *flent = NULL; 1323 1324 share_desired = (flags & MAC_OPEN_FLAGS_SHARES_DESIRED) != 0; 1325 *mchp = NULL; 1326 1327 i_mac_perim_enter(mip); 1328 1329 if (mip->mi_state_flags & MIS_IS_VNIC) { 1330 /* 1331 * The underlying MAC is a VNIC. Return the MAC client 1332 * handle of the lower MAC which was obtained by 1333 * the VNIC driver when it did its mac_client_open(). 1334 */ 1335 1336 mcip = mac_vnic_lower(mip); 1337 1338 /* 1339 * Note that multiple mac clients share the same mcip in 1340 * this case. 1341 */ 1342 if (flags & MAC_OPEN_FLAGS_EXCLUSIVE) 1343 mcip->mci_state_flags |= MCIS_EXCLUSIVE; 1344 1345 if (flags & MAC_OPEN_FLAGS_MULTI_PRIMARY) 1346 mcip->mci_flags |= MAC_CLIENT_FLAGS_MULTI_PRIMARY; 1347 1348 mip->mi_clients_list = mcip; 1349 i_mac_perim_exit(mip); 1350 *mchp = (mac_client_handle_t)mcip; 1351 1352 DTRACE_PROBE2(mac__client__open__nonallocated, mac_impl_t *, 1353 mcip->mci_mip, mac_client_impl_t *, mcip); 1354 1355 return (err); 1356 } 1357 1358 mcip = kmem_cache_alloc(mac_client_impl_cache, KM_SLEEP); 1359 1360 mcip->mci_mip = mip; 1361 mcip->mci_upper_mip = NULL; 1362 mcip->mci_rx_fn = mac_rx_def; 1363 mcip->mci_rx_arg = NULL; 1364 mcip->mci_rx_p_fn = NULL; 1365 mcip->mci_rx_p_arg = NULL; 1366 mcip->mci_p_unicast_list = NULL; 1367 mcip->mci_direct_rx.mdrx_v4 = NULL; 1368 mcip->mci_direct_rx.mdrx_v6 = NULL; 1369 mcip->mci_direct_rx.mdrx_arg_v4 = NULL; 1370 mcip->mci_direct_rx.mdrx_arg_v6 = NULL; 1371 mcip->mci_vidcache = MCIP_VIDCACHE_INVALID; 1372 1373 mcip->mci_unicast_list = NULL; 1374 1375 if ((flags & MAC_OPEN_FLAGS_IS_VNIC) != 0) 1376 mcip->mci_state_flags |= MCIS_IS_VNIC; 1377 1378 if ((flags & MAC_OPEN_FLAGS_EXCLUSIVE) != 0) 1379 mcip->mci_state_flags |= MCIS_EXCLUSIVE; 1380 1381 if ((flags & MAC_OPEN_FLAGS_IS_AGGR_PORT) != 0) 1382 mcip->mci_state_flags |= MCIS_IS_AGGR_PORT; 1383 1384 if (mip->mi_state_flags & MIS_IS_AGGR) 1385 mcip->mci_state_flags |= MCIS_IS_AGGR_CLIENT; 1386 1387 if ((flags & MAC_OPEN_FLAGS_USE_DATALINK_NAME) != 0) { 1388 datalink_id_t linkid; 1389 1390 ASSERT(name == NULL); 1391 if ((err = dls_devnet_macname2linkid(mip->mi_name, 1392 &linkid)) != 0) { 1393 goto done; 1394 } 1395 if ((err = dls_mgmt_get_linkinfo(linkid, mcip->mci_name, NULL, 1396 NULL, NULL)) != 0) { 1397 /* 1398 * Use mac name if dlmgmtd is not available. 1399 */ 1400 if (err == EBADF) { 1401 (void) strlcpy(mcip->mci_name, mip->mi_name, 1402 sizeof (mcip->mci_name)); 1403 err = 0; 1404 } else { 1405 goto done; 1406 } 1407 } 1408 mcip->mci_state_flags |= MCIS_USE_DATALINK_NAME; 1409 } else { 1410 ASSERT(name != NULL); 1411 if (strlen(name) > MAXNAMELEN) { 1412 err = EINVAL; 1413 goto done; 1414 } 1415 (void) strlcpy(mcip->mci_name, name, sizeof (mcip->mci_name)); 1416 } 1417 1418 if (flags & MAC_OPEN_FLAGS_MULTI_PRIMARY) 1419 mcip->mci_flags |= MAC_CLIENT_FLAGS_MULTI_PRIMARY; 1420 1421 if (flags & MAC_OPEN_FLAGS_NO_UNICAST_ADDR) 1422 mcip->mci_state_flags |= MCIS_NO_UNICAST_ADDR; 1423 1424 mac_protect_init(mcip); 1425 1426 /* the subflow table will be created dynamically */ 1427 mcip->mci_subflow_tab = NULL; 1428 1429 mcip->mci_misc_stat.mms_multircv = 0; 1430 mcip->mci_misc_stat.mms_brdcstrcv = 0; 1431 mcip->mci_misc_stat.mms_multixmt = 0; 1432 mcip->mci_misc_stat.mms_brdcstxmt = 0; 1433 1434 /* Create an initial flow */ 1435 1436 err = mac_flow_create(NULL, NULL, mcip->mci_name, NULL, 1437 mcip->mci_state_flags & MCIS_IS_VNIC ? FLOW_VNIC_MAC : 1438 FLOW_PRIMARY_MAC, &flent); 1439 if (err != 0) 1440 goto done; 1441 mcip->mci_flent = flent; 1442 FLOW_MARK(flent, FE_MC_NO_DATAPATH); 1443 flent->fe_mcip = mcip; 1444 1445 /* 1446 * Place initial creation reference on the flow. This reference 1447 * is released in the corresponding delete action viz. 1448 * mac_unicast_remove after waiting for all transient refs to 1449 * to go away. The wait happens in mac_flow_wait. 1450 */ 1451 FLOW_REFHOLD(flent); 1452 1453 /* 1454 * Do this ahead of the mac_bcast_add() below so that the mi_nclients 1455 * will have the right value for mac_rx_srs_setup(). 1456 */ 1457 mac_client_add(mcip); 1458 1459 mcip->mci_share = 0; 1460 if (share_desired) 1461 i_mac_share_alloc(mcip); 1462 1463 /* 1464 * We will do mimimal datapath setup to allow a MAC client to 1465 * transmit or receive non-unicast packets without waiting 1466 * for mac_unicast_add. 1467 */ 1468 if (mcip->mci_state_flags & MCIS_NO_UNICAST_ADDR) { 1469 if ((err = mac_client_datapath_setup(mcip, VLAN_ID_NONE, 1470 NULL, NULL, B_TRUE, NULL)) != 0) { 1471 goto done; 1472 } 1473 } 1474 1475 DTRACE_PROBE2(mac__client__open__allocated, mac_impl_t *, 1476 mcip->mci_mip, mac_client_impl_t *, mcip); 1477 1478 *mchp = (mac_client_handle_t)mcip; 1479 i_mac_perim_exit(mip); 1480 return (0); 1481 1482 done: 1483 i_mac_perim_exit(mip); 1484 mcip->mci_state_flags = 0; 1485 mcip->mci_tx_flag = 0; 1486 kmem_cache_free(mac_client_impl_cache, mcip); 1487 return (err); 1488 } 1489 1490 /* 1491 * Close the specified MAC client handle. 1492 */ 1493 void 1494 mac_client_close(mac_client_handle_t mch, uint16_t flags) 1495 { 1496 mac_client_impl_t *mcip = (mac_client_impl_t *)mch; 1497 mac_impl_t *mip = mcip->mci_mip; 1498 flow_entry_t *flent; 1499 1500 i_mac_perim_enter(mip); 1501 1502 if (flags & MAC_CLOSE_FLAGS_EXCLUSIVE) 1503 mcip->mci_state_flags &= ~MCIS_EXCLUSIVE; 1504 1505 if ((mcip->mci_state_flags & MCIS_IS_VNIC) && 1506 !(flags & MAC_CLOSE_FLAGS_IS_VNIC)) { 1507 /* 1508 * This is an upper VNIC client initiated operation. 1509 * The lower MAC client will be closed by the VNIC driver 1510 * when the VNIC is deleted. 1511 */ 1512 1513 i_mac_perim_exit(mip); 1514 return; 1515 } 1516 1517 /* If we have only setup up minimal datapth setup, tear it down */ 1518 if (mcip->mci_state_flags & MCIS_NO_UNICAST_ADDR) { 1519 mac_client_datapath_teardown((mac_client_handle_t)mcip, NULL, 1520 mcip->mci_flent); 1521 mcip->mci_state_flags &= ~MCIS_NO_UNICAST_ADDR; 1522 } 1523 1524 /* 1525 * Remove the flent associated with the MAC client 1526 */ 1527 flent = mcip->mci_flent; 1528 mcip->mci_flent = NULL; 1529 FLOW_FINAL_REFRELE(flent); 1530 1531 /* 1532 * MAC clients must remove the unicast addresses and promisc callbacks 1533 * they added before issuing a mac_client_close(). 1534 */ 1535 ASSERT(mcip->mci_unicast_list == NULL); 1536 ASSERT(mcip->mci_promisc_list == NULL); 1537 ASSERT(mcip->mci_tx_notify_cb_list == NULL); 1538 1539 i_mac_share_free(mcip); 1540 mac_protect_fini(mcip); 1541 mac_client_remove(mcip); 1542 1543 i_mac_perim_exit(mip); 1544 mcip->mci_subflow_tab = NULL; 1545 mcip->mci_state_flags = 0; 1546 mcip->mci_tx_flag = 0; 1547 kmem_cache_free(mac_client_impl_cache, mch); 1548 } 1549 1550 /* 1551 * Set the Rx bypass receive callback and return B_TRUE. Return 1552 * B_FALSE if it's not possible to enable bypass. 1553 */ 1554 boolean_t 1555 mac_rx_bypass_set(mac_client_handle_t mch, mac_direct_rx_t rx_fn, void *arg1, 1556 boolean_t v6) 1557 { 1558 mac_client_impl_t *mcip = (mac_client_impl_t *)mch; 1559 mac_impl_t *mip = mcip->mci_mip; 1560 1561 ASSERT(MAC_PERIM_HELD((mac_handle_t)mip)); 1562 1563 /* 1564 * If the client has more than one VLAN then process packets 1565 * through DLS. This should happen only when sun4v vsw is on 1566 * the scene. 1567 */ 1568 if (mcip->mci_nvids > 1) 1569 return (B_FALSE); 1570 1571 /* 1572 * These are not accessed directly in the data path, and hence 1573 * don't need any protection 1574 */ 1575 if (v6) { 1576 mcip->mci_direct_rx.mdrx_v6 = rx_fn; 1577 mcip->mci_direct_rx.mdrx_arg_v6 = arg1; 1578 } else { 1579 mcip->mci_direct_rx.mdrx_v4 = rx_fn; 1580 mcip->mci_direct_rx.mdrx_arg_v4 = arg1; 1581 } 1582 return (B_TRUE); 1583 } 1584 1585 /* 1586 * Enable/Disable rx bypass. By default, bypass is assumed to be enabled. 1587 */ 1588 void 1589 mac_rx_bypass_enable(mac_client_handle_t mch) 1590 { 1591 ((mac_client_impl_t *)mch)->mci_state_flags &= ~MCIS_RX_BYPASS_DISABLE; 1592 } 1593 1594 void 1595 mac_rx_bypass_disable(mac_client_handle_t mch) 1596 { 1597 ((mac_client_impl_t *)mch)->mci_state_flags |= MCIS_RX_BYPASS_DISABLE; 1598 } 1599 1600 /* 1601 * Set the receive callback for the specified MAC client. There can be 1602 * at most one such callback per MAC client. 1603 */ 1604 void 1605 mac_rx_set(mac_client_handle_t mch, mac_rx_t rx_fn, void *arg) 1606 { 1607 mac_client_impl_t *mcip = (mac_client_impl_t *)mch; 1608 mac_impl_t *mip = mcip->mci_mip; 1609 mac_impl_t *umip = mcip->mci_upper_mip; 1610 1611 /* 1612 * Instead of adding an extra set of locks and refcnts in 1613 * the datapath at the mac client boundary, we temporarily quiesce 1614 * the SRS and related entities. We then change the receive function 1615 * without interference from any receive data thread and then reenable 1616 * the data flow subsequently. 1617 */ 1618 i_mac_perim_enter(mip); 1619 mac_rx_client_quiesce(mch); 1620 1621 mcip->mci_rx_fn = rx_fn; 1622 mcip->mci_rx_arg = arg; 1623 mac_rx_client_restart(mch); 1624 1625 /* 1626 * If we're changing the Rx function on the primary MAC of a VNIC, 1627 * make sure any secondary addresses on the VNIC are updated as well. 1628 */ 1629 if (umip != NULL) { 1630 ASSERT((umip->mi_state_flags & MIS_IS_VNIC) != 0); 1631 mac_vnic_secondary_update(umip); 1632 } 1633 1634 i_mac_perim_exit(mip); 1635 } 1636 1637 /* 1638 * Reset the receive callback for the specified MAC client. 1639 */ 1640 void 1641 mac_rx_clear(mac_client_handle_t mch) 1642 { 1643 mac_rx_set(mch, mac_rx_def, NULL); 1644 } 1645 1646 void 1647 mac_rx_barrier(mac_client_handle_t mch) 1648 { 1649 mac_client_impl_t *mcip = (mac_client_impl_t *)mch; 1650 mac_impl_t *mip = mcip->mci_mip; 1651 1652 i_mac_perim_enter(mip); 1653 1654 /* If a RX callback is set, quiesce and restart that datapath */ 1655 if (mcip->mci_rx_fn != mac_rx_def) { 1656 mac_rx_client_quiesce(mch); 1657 mac_rx_client_restart(mch); 1658 } 1659 1660 /* If any promisc callbacks are registered, perform a barrier there */ 1661 if (mcip->mci_promisc_list != NULL || mip->mi_promisc_list != NULL) { 1662 mac_cb_info_t *mcbi = &mip->mi_promisc_cb_info; 1663 1664 mutex_enter(mcbi->mcbi_lockp); 1665 mac_callback_barrier(mcbi); 1666 mutex_exit(mcbi->mcbi_lockp); 1667 } 1668 1669 i_mac_perim_exit(mip); 1670 } 1671 1672 void 1673 mac_secondary_dup(mac_client_handle_t smch, mac_client_handle_t dmch) 1674 { 1675 mac_client_impl_t *smcip = (mac_client_impl_t *)smch; 1676 mac_client_impl_t *dmcip = (mac_client_impl_t *)dmch; 1677 flow_entry_t *flent = dmcip->mci_flent; 1678 1679 /* This should only be called to setup secondary macs */ 1680 ASSERT((flent->fe_type & FLOW_PRIMARY_MAC) == 0); 1681 1682 mac_rx_set(dmch, smcip->mci_rx_fn, smcip->mci_rx_arg); 1683 dmcip->mci_promisc_list = smcip->mci_promisc_list; 1684 1685 /* 1686 * Duplicate the primary mac resources to the secondary. 1687 * Since we already validated the resource controls when setting 1688 * them on the primary, we can ignore errors here. 1689 */ 1690 (void) mac_resource_ctl_set(dmch, MCIP_RESOURCE_PROPS(smcip)); 1691 } 1692 1693 /* 1694 * Called when removing a secondary MAC. Currently only clears the promisc_list 1695 * since we share the primary mac's promisc_list. 1696 */ 1697 void 1698 mac_secondary_cleanup(mac_client_handle_t mch) 1699 { 1700 mac_client_impl_t *mcip = (mac_client_impl_t *)mch; 1701 flow_entry_t *flent = mcip->mci_flent; 1702 1703 /* This should only be called for secondary macs */ 1704 ASSERT((flent->fe_type & FLOW_PRIMARY_MAC) == 0); 1705 mcip->mci_promisc_list = NULL; 1706 } 1707 1708 /* 1709 * Walk the MAC client subflow table and updates their priority values. 1710 */ 1711 static int 1712 mac_update_subflow_priority_cb(flow_entry_t *flent, void *arg) 1713 { 1714 mac_flow_update_priority(arg, flent); 1715 return (0); 1716 } 1717 1718 void 1719 mac_update_subflow_priority(mac_client_impl_t *mcip) 1720 { 1721 (void) mac_flow_walk(mcip->mci_subflow_tab, 1722 mac_update_subflow_priority_cb, mcip); 1723 } 1724 1725 /* 1726 * Modify the TX or RX ring properties. We could either just move around 1727 * rings, i.e add/remove rings given to a client. Or this might cause the 1728 * client to move from hardware based to software or the other way around. 1729 * If we want to reset this property, then we clear the mask, additionally 1730 * if the client was given a non-default group we remove all rings except 1731 * for 1 and give it back to the default group. 1732 */ 1733 int 1734 mac_client_set_rings_prop(mac_client_impl_t *mcip, mac_resource_props_t *mrp, 1735 mac_resource_props_t *tmrp) 1736 { 1737 mac_impl_t *mip = mcip->mci_mip; 1738 flow_entry_t *flent = mcip->mci_flent; 1739 uint8_t *mac_addr; 1740 int err = 0; 1741 mac_group_t *defgrp; 1742 mac_group_t *group; 1743 mac_group_t *ngrp; 1744 mac_resource_props_t *cmrp = MCIP_RESOURCE_PROPS(mcip); 1745 uint_t ringcnt; 1746 boolean_t unspec; 1747 1748 if (mcip->mci_share != 0) 1749 return (EINVAL); 1750 1751 if (mrp->mrp_mask & MRP_RX_RINGS) { 1752 unspec = mrp->mrp_mask & MRP_RXRINGS_UNSPEC; 1753 group = flent->fe_rx_ring_group; 1754 defgrp = MAC_DEFAULT_RX_GROUP(mip); 1755 mac_addr = flent->fe_flow_desc.fd_dst_mac; 1756 1757 /* 1758 * No resulting change. If we are resetting on a client on 1759 * which there was no rx rings property. For dynamic group 1760 * if we are setting the same number of rings already set. 1761 * For static group if we are requesting a group again. 1762 */ 1763 if (mrp->mrp_mask & MRP_RINGS_RESET) { 1764 if (!(tmrp->mrp_mask & MRP_RX_RINGS)) 1765 return (0); 1766 } else { 1767 if (unspec) { 1768 if (tmrp->mrp_mask & MRP_RXRINGS_UNSPEC) 1769 return (0); 1770 } else if (mip->mi_rx_group_type == 1771 MAC_GROUP_TYPE_DYNAMIC) { 1772 if ((tmrp->mrp_mask & MRP_RX_RINGS) && 1773 !(tmrp->mrp_mask & MRP_RXRINGS_UNSPEC) && 1774 mrp->mrp_nrxrings == tmrp->mrp_nrxrings) { 1775 return (0); 1776 } 1777 } 1778 } 1779 /* Resetting the prop */ 1780 if (mrp->mrp_mask & MRP_RINGS_RESET) { 1781 /* 1782 * We will just keep one ring and give others back if 1783 * we are not the primary. For the primary we give 1784 * all the rings in the default group except the 1785 * default ring. If it is a static group, then 1786 * we don't do anything, but clear the MRP_RX_RINGS 1787 * flag. 1788 */ 1789 if (group != defgrp) { 1790 if (mip->mi_rx_group_type == 1791 MAC_GROUP_TYPE_DYNAMIC) { 1792 /* 1793 * This group has reserved rings 1794 * that need to be released now, 1795 * so does the group. 1796 */ 1797 MAC_RX_RING_RELEASED(mip, 1798 group->mrg_cur_count); 1799 MAC_RX_GRP_RELEASED(mip); 1800 if ((flent->fe_type & 1801 FLOW_PRIMARY_MAC) != 0) { 1802 if (mip->mi_nactiveclients == 1803 1) { 1804 (void) 1805 mac_rx_switch_group( 1806 mcip, group, 1807 defgrp); 1808 return (0); 1809 } else { 1810 cmrp->mrp_nrxrings = 1811 group-> 1812 mrg_cur_count + 1813 defgrp-> 1814 mrg_cur_count - 1; 1815 } 1816 } else { 1817 cmrp->mrp_nrxrings = 1; 1818 } 1819 (void) mac_group_ring_modify(mcip, 1820 group, defgrp); 1821 } else { 1822 /* 1823 * If this is a static group, we 1824 * need to release the group. The 1825 * client will remain in the same 1826 * group till some other client 1827 * needs this group. 1828 */ 1829 MAC_RX_GRP_RELEASED(mip); 1830 } 1831 /* Let check if we can give this an excl group */ 1832 } else if (group == defgrp) { 1833 /* 1834 * If multiple clients share an 1835 * address then they must stay on the 1836 * default group. 1837 */ 1838 if (mac_check_macaddr_shared(mcip->mci_unicast)) 1839 return (0); 1840 1841 ngrp = mac_reserve_rx_group(mcip, mac_addr, 1842 B_TRUE); 1843 /* Couldn't give it a group, that's fine */ 1844 if (ngrp == NULL) 1845 return (0); 1846 /* Switch to H/W */ 1847 if (mac_rx_switch_group(mcip, defgrp, ngrp) != 1848 0) { 1849 mac_stop_group(ngrp); 1850 return (0); 1851 } 1852 } 1853 /* 1854 * If the client is in the default group, we will 1855 * just clear the MRP_RX_RINGS and leave it as 1856 * it rather than look for an exclusive group 1857 * for it. 1858 */ 1859 return (0); 1860 } 1861 1862 if (group == defgrp && ((mrp->mrp_nrxrings > 0) || unspec)) { 1863 /* 1864 * We are requesting Rx rings. Try to reserve 1865 * a non-default group. 1866 * 1867 * If multiple clients share an address then 1868 * they must stay on the default group. 1869 */ 1870 if (mac_check_macaddr_shared(mcip->mci_unicast)) 1871 return (EINVAL); 1872 1873 ngrp = mac_reserve_rx_group(mcip, mac_addr, B_TRUE); 1874 if (ngrp == NULL) 1875 return (ENOSPC); 1876 1877 /* Switch to H/W */ 1878 if (mac_rx_switch_group(mcip, defgrp, ngrp) != 0) { 1879 mac_release_rx_group(mcip, ngrp); 1880 return (ENOSPC); 1881 } 1882 MAC_RX_GRP_RESERVED(mip); 1883 if (mip->mi_rx_group_type == MAC_GROUP_TYPE_DYNAMIC) 1884 MAC_RX_RING_RESERVED(mip, ngrp->mrg_cur_count); 1885 } else if (group != defgrp && !unspec && 1886 mrp->mrp_nrxrings == 0) { 1887 /* Switch to S/W */ 1888 ringcnt = group->mrg_cur_count; 1889 if (mac_rx_switch_group(mcip, group, defgrp) != 0) 1890 return (ENOSPC); 1891 if (tmrp->mrp_mask & MRP_RX_RINGS) { 1892 MAC_RX_GRP_RELEASED(mip); 1893 if (mip->mi_rx_group_type == 1894 MAC_GROUP_TYPE_DYNAMIC) { 1895 MAC_RX_RING_RELEASED(mip, ringcnt); 1896 } 1897 } 1898 } else if (group != defgrp && mip->mi_rx_group_type == 1899 MAC_GROUP_TYPE_DYNAMIC) { 1900 ringcnt = group->mrg_cur_count; 1901 err = mac_group_ring_modify(mcip, group, defgrp); 1902 if (err != 0) 1903 return (err); 1904 /* 1905 * Update the accounting. If this group 1906 * already had explicitly reserved rings, 1907 * we need to update the rings based on 1908 * the new ring count. If this group 1909 * had not explicitly reserved rings, 1910 * then we just reserve the rings asked for 1911 * and reserve the group. 1912 */ 1913 if (tmrp->mrp_mask & MRP_RX_RINGS) { 1914 if (ringcnt > group->mrg_cur_count) { 1915 MAC_RX_RING_RELEASED(mip, 1916 ringcnt - group->mrg_cur_count); 1917 } else { 1918 MAC_RX_RING_RESERVED(mip, 1919 group->mrg_cur_count - ringcnt); 1920 } 1921 } else { 1922 MAC_RX_RING_RESERVED(mip, group->mrg_cur_count); 1923 MAC_RX_GRP_RESERVED(mip); 1924 } 1925 } 1926 } 1927 if (mrp->mrp_mask & MRP_TX_RINGS) { 1928 unspec = mrp->mrp_mask & MRP_TXRINGS_UNSPEC; 1929 group = flent->fe_tx_ring_group; 1930 defgrp = MAC_DEFAULT_TX_GROUP(mip); 1931 1932 /* 1933 * For static groups we only allow rings=0 or resetting the 1934 * rings property. 1935 */ 1936 if (mrp->mrp_ntxrings > 0 && 1937 mip->mi_tx_group_type != MAC_GROUP_TYPE_DYNAMIC) { 1938 return (ENOTSUP); 1939 } 1940 if (mrp->mrp_mask & MRP_RINGS_RESET) { 1941 if (!(tmrp->mrp_mask & MRP_TX_RINGS)) 1942 return (0); 1943 } else { 1944 if (unspec) { 1945 if (tmrp->mrp_mask & MRP_TXRINGS_UNSPEC) 1946 return (0); 1947 } else if (mip->mi_tx_group_type == 1948 MAC_GROUP_TYPE_DYNAMIC) { 1949 if ((tmrp->mrp_mask & MRP_TX_RINGS) && 1950 !(tmrp->mrp_mask & MRP_TXRINGS_UNSPEC) && 1951 mrp->mrp_ntxrings == tmrp->mrp_ntxrings) { 1952 return (0); 1953 } 1954 } 1955 } 1956 /* Resetting the prop */ 1957 if (mrp->mrp_mask & MRP_RINGS_RESET) { 1958 if (group != defgrp) { 1959 if (mip->mi_tx_group_type == 1960 MAC_GROUP_TYPE_DYNAMIC) { 1961 ringcnt = group->mrg_cur_count; 1962 if ((flent->fe_type & 1963 FLOW_PRIMARY_MAC) != 0) { 1964 mac_tx_client_quiesce( 1965 (mac_client_handle_t) 1966 mcip); 1967 mac_tx_switch_group(mcip, 1968 group, defgrp); 1969 mac_tx_client_restart( 1970 (mac_client_handle_t) 1971 mcip); 1972 MAC_TX_GRP_RELEASED(mip); 1973 MAC_TX_RING_RELEASED(mip, 1974 ringcnt); 1975 return (0); 1976 } 1977 cmrp->mrp_ntxrings = 1; 1978 (void) mac_group_ring_modify(mcip, 1979 group, defgrp); 1980 /* 1981 * This group has reserved rings 1982 * that need to be released now. 1983 */ 1984 MAC_TX_RING_RELEASED(mip, ringcnt); 1985 } 1986 /* 1987 * If this is a static group, we 1988 * need to release the group. The 1989 * client will remain in the same 1990 * group till some other client 1991 * needs this group. 1992 */ 1993 MAC_TX_GRP_RELEASED(mip); 1994 } else if (group == defgrp && 1995 (flent->fe_type & FLOW_PRIMARY_MAC) == 0) { 1996 ngrp = mac_reserve_tx_group(mcip, B_TRUE); 1997 if (ngrp == NULL) 1998 return (0); 1999 mac_tx_client_quiesce( 2000 (mac_client_handle_t)mcip); 2001 mac_tx_switch_group(mcip, defgrp, ngrp); 2002 mac_tx_client_restart( 2003 (mac_client_handle_t)mcip); 2004 } 2005 /* 2006 * If the client is in the default group, we will 2007 * just clear the MRP_TX_RINGS and leave it as 2008 * it rather than look for an exclusive group 2009 * for it. 2010 */ 2011 return (0); 2012 } 2013 2014 /* Switch to H/W */ 2015 if (group == defgrp && ((mrp->mrp_ntxrings > 0) || unspec)) { 2016 ngrp = mac_reserve_tx_group(mcip, B_TRUE); 2017 if (ngrp == NULL) 2018 return (ENOSPC); 2019 mac_tx_client_quiesce((mac_client_handle_t)mcip); 2020 mac_tx_switch_group(mcip, defgrp, ngrp); 2021 mac_tx_client_restart((mac_client_handle_t)mcip); 2022 MAC_TX_GRP_RESERVED(mip); 2023 if (mip->mi_tx_group_type == MAC_GROUP_TYPE_DYNAMIC) 2024 MAC_TX_RING_RESERVED(mip, ngrp->mrg_cur_count); 2025 /* Switch to S/W */ 2026 } else if (group != defgrp && !unspec && 2027 mrp->mrp_ntxrings == 0) { 2028 /* Switch to S/W */ 2029 ringcnt = group->mrg_cur_count; 2030 mac_tx_client_quiesce((mac_client_handle_t)mcip); 2031 mac_tx_switch_group(mcip, group, defgrp); 2032 mac_tx_client_restart((mac_client_handle_t)mcip); 2033 if (tmrp->mrp_mask & MRP_TX_RINGS) { 2034 MAC_TX_GRP_RELEASED(mip); 2035 if (mip->mi_tx_group_type == 2036 MAC_GROUP_TYPE_DYNAMIC) { 2037 MAC_TX_RING_RELEASED(mip, ringcnt); 2038 } 2039 } 2040 } else if (group != defgrp && mip->mi_tx_group_type == 2041 MAC_GROUP_TYPE_DYNAMIC) { 2042 ringcnt = group->mrg_cur_count; 2043 err = mac_group_ring_modify(mcip, group, defgrp); 2044 if (err != 0) 2045 return (err); 2046 /* 2047 * Update the accounting. If this group 2048 * already had explicitly reserved rings, 2049 * we need to update the rings based on 2050 * the new ring count. If this group 2051 * had not explicitly reserved rings, 2052 * then we just reserve the rings asked for 2053 * and reserve the group. 2054 */ 2055 if (tmrp->mrp_mask & MRP_TX_RINGS) { 2056 if (ringcnt > group->mrg_cur_count) { 2057 MAC_TX_RING_RELEASED(mip, 2058 ringcnt - group->mrg_cur_count); 2059 } else { 2060 MAC_TX_RING_RESERVED(mip, 2061 group->mrg_cur_count - ringcnt); 2062 } 2063 } else { 2064 MAC_TX_RING_RESERVED(mip, group->mrg_cur_count); 2065 MAC_TX_GRP_RESERVED(mip); 2066 } 2067 } 2068 } 2069 return (0); 2070 } 2071 2072 /* 2073 * When the MAC client is being brought up (i.e. we do a unicast_add) we need 2074 * to initialize the cpu and resource control structure in the 2075 * mac_client_impl_t from the mac_impl_t (i.e if there are any cached 2076 * properties before the flow entry for the unicast address was created). 2077 */ 2078 static int 2079 mac_resource_ctl_set(mac_client_handle_t mch, mac_resource_props_t *mrp) 2080 { 2081 mac_client_impl_t *mcip = (mac_client_impl_t *)mch; 2082 mac_impl_t *mip = (mac_impl_t *)mcip->mci_mip; 2083 mac_impl_t *umip = mcip->mci_upper_mip; 2084 int err = 0; 2085 flow_entry_t *flent = mcip->mci_flent; 2086 mac_resource_props_t *omrp, *nmrp = MCIP_RESOURCE_PROPS(mcip); 2087 2088 ASSERT(MAC_PERIM_HELD((mac_handle_t)mip)); 2089 2090 err = mac_validate_props(mcip->mci_state_flags & MCIS_IS_VNIC ? 2091 mcip->mci_upper_mip : mip, mrp); 2092 if (err != 0) 2093 return (err); 2094 2095 /* 2096 * Copy over the existing properties since mac_update_resources 2097 * will modify the client's mrp. Currently, the saved property 2098 * is used to determine the difference between existing and 2099 * modified rings property. 2100 */ 2101 omrp = kmem_zalloc(sizeof (*omrp), KM_SLEEP); 2102 bcopy(nmrp, omrp, sizeof (*omrp)); 2103 mac_update_resources(mrp, MCIP_RESOURCE_PROPS(mcip), B_FALSE); 2104 if (MCIP_DATAPATH_SETUP(mcip)) { 2105 /* 2106 * We support rings only for primary client when there are 2107 * multiple clients sharing the same MAC address (e.g. VLAN). 2108 */ 2109 if (mrp->mrp_mask & MRP_RX_RINGS || 2110 mrp->mrp_mask & MRP_TX_RINGS) { 2111 2112 if ((err = mac_client_set_rings_prop(mcip, mrp, 2113 omrp)) != 0) { 2114 if (omrp->mrp_mask & MRP_RX_RINGS) { 2115 nmrp->mrp_mask |= MRP_RX_RINGS; 2116 nmrp->mrp_nrxrings = omrp->mrp_nrxrings; 2117 } else { 2118 nmrp->mrp_mask &= ~MRP_RX_RINGS; 2119 nmrp->mrp_nrxrings = 0; 2120 } 2121 if (omrp->mrp_mask & MRP_TX_RINGS) { 2122 nmrp->mrp_mask |= MRP_TX_RINGS; 2123 nmrp->mrp_ntxrings = omrp->mrp_ntxrings; 2124 } else { 2125 nmrp->mrp_mask &= ~MRP_TX_RINGS; 2126 nmrp->mrp_ntxrings = 0; 2127 } 2128 if (omrp->mrp_mask & MRP_RXRINGS_UNSPEC) 2129 omrp->mrp_mask |= MRP_RXRINGS_UNSPEC; 2130 else 2131 omrp->mrp_mask &= ~MRP_RXRINGS_UNSPEC; 2132 2133 if (omrp->mrp_mask & MRP_TXRINGS_UNSPEC) 2134 omrp->mrp_mask |= MRP_TXRINGS_UNSPEC; 2135 else 2136 omrp->mrp_mask &= ~MRP_TXRINGS_UNSPEC; 2137 kmem_free(omrp, sizeof (*omrp)); 2138 return (err); 2139 } 2140 2141 /* 2142 * If we modified the rings property of the primary 2143 * we need to update the property fields of its 2144 * VLANs as they inherit the primary's properites. 2145 */ 2146 if (mac_is_primary_client(mcip)) { 2147 mac_set_prim_vlan_rings(mip, 2148 MCIP_RESOURCE_PROPS(mcip)); 2149 } 2150 } 2151 /* 2152 * We have to set this prior to calling mac_flow_modify. 2153 */ 2154 if (mrp->mrp_mask & MRP_PRIORITY) { 2155 if (mrp->mrp_priority == MPL_RESET) { 2156 MAC_CLIENT_SET_PRIORITY_RANGE(mcip, 2157 MPL_LINK_DEFAULT); 2158 } else { 2159 MAC_CLIENT_SET_PRIORITY_RANGE(mcip, 2160 mrp->mrp_priority); 2161 } 2162 } 2163 2164 mac_flow_modify(mip->mi_flow_tab, flent, mrp); 2165 if (mrp->mrp_mask & MRP_PRIORITY) 2166 mac_update_subflow_priority(mcip); 2167 2168 /* Apply these resource settings to any secondary macs */ 2169 if (umip != NULL) { 2170 ASSERT((umip->mi_state_flags & MIS_IS_VNIC) != 0); 2171 mac_vnic_secondary_update(umip); 2172 } 2173 } 2174 kmem_free(omrp, sizeof (*omrp)); 2175 return (0); 2176 } 2177 2178 static int 2179 mac_unicast_flow_create(mac_client_impl_t *mcip, uint8_t *mac_addr, 2180 uint16_t vid, boolean_t is_primary, boolean_t first_flow, 2181 flow_entry_t **flent, mac_resource_props_t *mrp) 2182 { 2183 mac_impl_t *mip = (mac_impl_t *)mcip->mci_mip; 2184 flow_desc_t flow_desc; 2185 char flowname[MAXFLOWNAMELEN]; 2186 int err; 2187 uint_t flent_flags; 2188 2189 /* 2190 * First unicast address being added, create a new flow 2191 * for that MAC client. 2192 */ 2193 bzero(&flow_desc, sizeof (flow_desc)); 2194 2195 ASSERT(mac_addr != NULL || 2196 (mcip->mci_state_flags & MCIS_NO_UNICAST_ADDR)); 2197 if (mac_addr != NULL) { 2198 flow_desc.fd_mac_len = mip->mi_type->mt_addr_length; 2199 bcopy(mac_addr, flow_desc.fd_dst_mac, flow_desc.fd_mac_len); 2200 } 2201 flow_desc.fd_mask = FLOW_LINK_DST; 2202 if (vid != 0) { 2203 flow_desc.fd_vid = vid; 2204 flow_desc.fd_mask |= FLOW_LINK_VID; 2205 } 2206 2207 /* 2208 * XXX-nicolas. For now I'm keeping the FLOW_PRIMARY_MAC 2209 * and FLOW_VNIC. Even though they're a hack inherited 2210 * from the SRS code, we'll keep them for now. They're currently 2211 * consumed by mac_datapath_setup() to create the SRS. 2212 * That code should be eventually moved out of 2213 * mac_datapath_setup() and moved to a mac_srs_create() 2214 * function of some sort to keep things clean. 2215 * 2216 * Also, there's no reason why the SRS for the primary MAC 2217 * client should be different than any other MAC client. Until 2218 * this is cleaned-up, we support only one MAC unicast address 2219 * per client. 2220 * 2221 * We set FLOW_PRIMARY_MAC for the primary MAC address, 2222 * FLOW_VNIC for everything else. 2223 */ 2224 if (is_primary) 2225 flent_flags = FLOW_PRIMARY_MAC; 2226 else 2227 flent_flags = FLOW_VNIC_MAC; 2228 2229 /* 2230 * For the first flow we use the MAC client's name - mci_name, for 2231 * subsequent ones we just create a name with the VID. This is 2232 * so that we can add these flows to the same flow table. This is 2233 * fine as the flow name (except for the one with the MAC client's 2234 * name) is not visible. When the first flow is removed, we just replace 2235 * its fdesc with another from the list, so we will still retain the 2236 * flent with the MAC client's flow name. 2237 */ 2238 if (first_flow) { 2239 bcopy(mcip->mci_name, flowname, MAXFLOWNAMELEN); 2240 } else { 2241 (void) sprintf(flowname, "%s%u", mcip->mci_name, vid); 2242 flent_flags = FLOW_NO_STATS; 2243 } 2244 2245 if ((err = mac_flow_create(&flow_desc, mrp, flowname, NULL, 2246 flent_flags, flent)) != 0) 2247 return (err); 2248 2249 mac_misc_stat_create(*flent); 2250 FLOW_MARK(*flent, FE_INCIPIENT); 2251 (*flent)->fe_mcip = mcip; 2252 2253 /* 2254 * Place initial creation reference on the flow. This reference 2255 * is released in the corresponding delete action viz. 2256 * mac_unicast_remove after waiting for all transient refs to 2257 * to go away. The wait happens in mac_flow_wait. 2258 * We have already held the reference in mac_client_open(). 2259 */ 2260 if (!first_flow) 2261 FLOW_REFHOLD(*flent); 2262 return (0); 2263 } 2264 2265 /* Refresh the multicast grouping for this VID. */ 2266 int 2267 mac_client_update_mcast(void *arg, boolean_t add, const uint8_t *addrp) 2268 { 2269 flow_entry_t *flent = arg; 2270 mac_client_impl_t *mcip = flent->fe_mcip; 2271 uint16_t vid; 2272 flow_desc_t flow_desc; 2273 2274 mac_flow_get_desc(flent, &flow_desc); 2275 vid = (flow_desc.fd_mask & FLOW_LINK_VID) != 0 ? 2276 flow_desc.fd_vid : VLAN_ID_NONE; 2277 2278 /* 2279 * We don't call mac_multicast_add()/mac_multicast_remove() as 2280 * we want to add/remove for this specific vid. 2281 */ 2282 if (add) { 2283 return (mac_bcast_add(mcip, addrp, vid, 2284 MAC_ADDRTYPE_MULTICAST)); 2285 } else { 2286 mac_bcast_delete(mcip, addrp, vid); 2287 return (0); 2288 } 2289 } 2290 2291 static void 2292 mac_update_single_active_client(mac_impl_t *mip) 2293 { 2294 mac_client_impl_t *client = NULL; 2295 2296 ASSERT(MAC_PERIM_HELD((mac_handle_t)mip)); 2297 2298 rw_enter(&mip->mi_rw_lock, RW_WRITER); 2299 if (mip->mi_nactiveclients == 1) { 2300 /* 2301 * Find the one active MAC client from the list of MAC 2302 * clients. The active MAC client has at least one 2303 * unicast address. 2304 */ 2305 for (client = mip->mi_clients_list; client != NULL; 2306 client = client->mci_client_next) { 2307 if (client->mci_unicast_list != NULL) 2308 break; 2309 } 2310 ASSERT(client != NULL); 2311 } 2312 2313 /* 2314 * mi_single_active_client is protected by the MAC impl's read/writer 2315 * lock, which allows mac_rx() to check the value of that pointer 2316 * as a reader. 2317 */ 2318 mip->mi_single_active_client = client; 2319 rw_exit(&mip->mi_rw_lock); 2320 } 2321 2322 /* 2323 * Set up the data path. Called from i_mac_unicast_add after having 2324 * done all the validations including making sure this is an active 2325 * client (i.e that is ready to process packets.) 2326 */ 2327 static int 2328 mac_client_datapath_setup(mac_client_impl_t *mcip, uint16_t vid, 2329 uint8_t *mac_addr, mac_resource_props_t *mrp, boolean_t isprimary, 2330 mac_unicast_impl_t *muip) 2331 { 2332 mac_impl_t *mip = mcip->mci_mip; 2333 boolean_t mac_started = B_FALSE; 2334 boolean_t bcast_added = B_FALSE; 2335 boolean_t nactiveclients_added = B_FALSE; 2336 flow_entry_t *flent; 2337 int err = 0; 2338 boolean_t no_unicast; 2339 2340 no_unicast = mcip->mci_state_flags & MCIS_NO_UNICAST_ADDR; 2341 2342 if ((err = mac_start((mac_handle_t)mip)) != 0) 2343 goto bail; 2344 2345 mac_started = B_TRUE; 2346 2347 /* add the MAC client to the broadcast address group by default */ 2348 if (mip->mi_type->mt_brdcst_addr != NULL) { 2349 err = mac_bcast_add(mcip, mip->mi_type->mt_brdcst_addr, vid, 2350 MAC_ADDRTYPE_BROADCAST); 2351 if (err != 0) 2352 goto bail; 2353 bcast_added = B_TRUE; 2354 } 2355 2356 /* 2357 * If this is the first unicast address addition for this 2358 * client, reuse the pre-allocated larval flow entry associated with 2359 * the MAC client. 2360 */ 2361 flent = (mcip->mci_nflents == 0) ? mcip->mci_flent : NULL; 2362 2363 /* We are configuring the unicast flow now */ 2364 if (!MCIP_DATAPATH_SETUP(mcip)) { 2365 2366 if (mrp != NULL) { 2367 MAC_CLIENT_SET_PRIORITY_RANGE(mcip, 2368 (mrp->mrp_mask & MRP_PRIORITY) ? mrp->mrp_priority : 2369 MPL_LINK_DEFAULT); 2370 } 2371 if ((err = mac_unicast_flow_create(mcip, mac_addr, vid, 2372 isprimary, B_TRUE, &flent, mrp)) != 0) 2373 goto bail; 2374 2375 mip->mi_nactiveclients++; 2376 nactiveclients_added = B_TRUE; 2377 2378 /* 2379 * This will allocate the RX ring group if possible for the 2380 * flow and program the software classifier as needed. 2381 */ 2382 if ((err = mac_datapath_setup(mcip, flent, SRST_LINK)) != 0) 2383 goto bail; 2384 2385 if (no_unicast) 2386 goto done_setup; 2387 /* 2388 * The unicast MAC address must have been added successfully. 2389 */ 2390 ASSERT(mcip->mci_unicast != NULL); 2391 2392 /* 2393 * Push down the sub-flows that were defined on this link 2394 * hitherto. The flows are added to the active flow table 2395 * and SRS, softrings etc. are created as needed. 2396 */ 2397 mac_link_init_flows((mac_client_handle_t)mcip); 2398 } else { 2399 mac_address_t *map = mcip->mci_unicast; 2400 2401 ASSERT(!no_unicast); 2402 /* 2403 * A unicast flow already exists for that MAC client 2404 * so this flow must be the same MAC address but with 2405 * a different VID. It has been checked by 2406 * mac_addr_in_use(). 2407 * 2408 * We will use the SRS etc. from the initial 2409 * mci_flent. We don't need to create a kstat for 2410 * this, as except for the fdesc, everything will be 2411 * used from the first flent. 2412 * 2413 * The only time we should see multiple flents on the 2414 * same MAC client is on the sun4v vsw. If we removed 2415 * that code we should be able to remove the entire 2416 * notion of multiple flents on a MAC client (this 2417 * doesn't affect sub/user flows because they have 2418 * their own list unrelated to mci_flent_list). 2419 */ 2420 if (bcmp(mac_addr, map->ma_addr, map->ma_len) != 0) { 2421 err = EINVAL; 2422 goto bail; 2423 } 2424 2425 if ((err = mac_unicast_flow_create(mcip, mac_addr, vid, 2426 isprimary, B_FALSE, &flent, NULL)) != 0) { 2427 goto bail; 2428 } 2429 if ((err = mac_flow_add(mip->mi_flow_tab, flent)) != 0) { 2430 FLOW_FINAL_REFRELE(flent); 2431 goto bail; 2432 } 2433 2434 /* update the multicast group for this vid */ 2435 mac_client_bcast_refresh(mcip, mac_client_update_mcast, 2436 (void *)flent, B_TRUE); 2437 2438 } 2439 2440 /* populate the shared MAC address */ 2441 muip->mui_map = mcip->mci_unicast; 2442 2443 rw_enter(&mcip->mci_rw_lock, RW_WRITER); 2444 muip->mui_next = mcip->mci_unicast_list; 2445 mcip->mci_unicast_list = muip; 2446 rw_exit(&mcip->mci_rw_lock); 2447 2448 done_setup: 2449 /* 2450 * First add the flent to the flow list of this mcip. Then set 2451 * the mip's mi_single_active_client if needed. The Rx path assumes 2452 * that mip->mi_single_active_client will always have an associated 2453 * flent. 2454 */ 2455 mac_client_add_to_flow_list(mcip, flent); 2456 if (nactiveclients_added) 2457 mac_update_single_active_client(mip); 2458 /* 2459 * Trigger a renegotiation of the capabilities when the number of 2460 * active clients changes from 1 to 2, since some of the capabilities 2461 * might have to be disabled. Also send a MAC_NOTE_LINK notification 2462 * to all the MAC clients whenever physical link is DOWN. 2463 */ 2464 if (mip->mi_nactiveclients == 2) { 2465 mac_capab_update((mac_handle_t)mip); 2466 mac_virtual_link_update(mip); 2467 } 2468 /* 2469 * Now that the setup is complete, clear the INCIPIENT flag. 2470 * The flag was set to avoid incoming packets seeing inconsistent 2471 * structures while the setup was in progress. Clear the mci_tx_flag 2472 * by calling mac_tx_client_block. It is possible that 2473 * mac_unicast_remove was called prior to this mac_unicast_add which 2474 * could have set the MCI_TX_QUIESCE flag. 2475 */ 2476 if (flent->fe_rx_ring_group != NULL) 2477 mac_rx_group_unmark(flent->fe_rx_ring_group, MR_INCIPIENT); 2478 FLOW_UNMARK(flent, FE_INCIPIENT); 2479 2480 /* 2481 * If this is an aggr port client, don't enable the flow's 2482 * datapath at this stage. Otherwise, bcast traffic could 2483 * arrive while the aggr port is in the process of 2484 * initializing. Instead, the flow's datapath is started later 2485 * when mac_client_set_flow_cb() is called. 2486 */ 2487 if ((mcip->mci_state_flags & MCIS_IS_AGGR_PORT) == 0) 2488 FLOW_UNMARK(flent, FE_MC_NO_DATAPATH); 2489 2490 mac_tx_client_unblock(mcip); 2491 return (0); 2492 bail: 2493 if (bcast_added) 2494 mac_bcast_delete(mcip, mip->mi_type->mt_brdcst_addr, vid); 2495 2496 if (nactiveclients_added) 2497 mip->mi_nactiveclients--; 2498 2499 if (mac_started) 2500 mac_stop((mac_handle_t)mip); 2501 2502 return (err); 2503 } 2504 2505 /* 2506 * Return the passive primary MAC client, if present. The passive client is 2507 * a stand-by client that has the same unicast address as another that is 2508 * currenly active. Once the active client goes away, the passive client 2509 * becomes active. 2510 */ 2511 static mac_client_impl_t * 2512 mac_get_passive_primary_client(mac_impl_t *mip) 2513 { 2514 mac_client_impl_t *mcip; 2515 2516 for (mcip = mip->mi_clients_list; mcip != NULL; 2517 mcip = mcip->mci_client_next) { 2518 if (mac_is_primary_client(mcip) && 2519 (mcip->mci_flags & MAC_CLIENT_FLAGS_PASSIVE_PRIMARY) != 0) { 2520 return (mcip); 2521 } 2522 } 2523 return (NULL); 2524 } 2525 2526 /* 2527 * Add a new unicast address to the MAC client. 2528 * 2529 * The MAC address can be specified either by value, or the MAC client can 2530 * specify that it wants to use the primary MAC address of the underlying MAC. 2531 * See the introductory comments at the beginning of this file for more 2532 * information on primary MAC addresses. 2533 * 2534 * Note also the tuple (MAC address, VID) must be unique for the MAC clients 2535 * defined on top of the same underlying MAC instance. 2536 * 2537 * In no case can a client use the PVID for the MAC, if the MAC has one set. 2538 */ 2539 int 2540 i_mac_unicast_add(mac_client_handle_t mch, uint8_t *mac_addr, uint16_t flags, 2541 mac_unicast_handle_t *mah, uint16_t vid, mac_diag_t *diag) 2542 { 2543 mac_client_impl_t *mcip = (mac_client_impl_t *)mch; 2544 mac_impl_t *mip = mcip->mci_mip; 2545 int err; 2546 uint_t mac_len = mip->mi_type->mt_addr_length; 2547 boolean_t fastpath_disabled = B_FALSE; 2548 boolean_t is_primary = (flags & MAC_UNICAST_PRIMARY); 2549 boolean_t is_unicast_hw = (flags & MAC_UNICAST_HW); 2550 mac_resource_props_t *mrp; 2551 boolean_t passive_client = B_FALSE; 2552 mac_unicast_impl_t *muip; 2553 boolean_t is_vnic_primary = 2554 (flags & MAC_UNICAST_VNIC_PRIMARY); 2555 2556 /* 2557 * When the VID is non-zero the underlying MAC cannot be a 2558 * VNIC. I.e., dladm create-vlan cannot take a VNIC as 2559 * argument, only the primary MAC client. 2560 */ 2561 ASSERT(!((mip->mi_state_flags & MIS_IS_VNIC) && (vid != VLAN_ID_NONE))); 2562 2563 *diag = MAC_DIAG_NONE; 2564 2565 /* 2566 * Can't unicast add if the client asked only for minimal datapath 2567 * setup. 2568 */ 2569 if (mcip->mci_state_flags & MCIS_NO_UNICAST_ADDR) 2570 return (ENOTSUP); 2571 2572 /* 2573 * Check for an attempted use of the current Port VLAN ID, if enabled. 2574 * No client may use it. 2575 */ 2576 if (mip->mi_pvid != VLAN_ID_NONE && vid == mip->mi_pvid) 2577 return (EBUSY); 2578 2579 /* 2580 * Check whether it's the primary client and flag it. 2581 */ 2582 if (!(mcip->mci_state_flags & MCIS_IS_VNIC) && is_primary && 2583 vid == VLAN_ID_NONE) 2584 mcip->mci_flags |= MAC_CLIENT_FLAGS_PRIMARY; 2585 2586 /* 2587 * is_vnic_primary is true when we come here as a VLAN VNIC 2588 * which uses the primary MAC client's address but with a non-zero 2589 * VID. In this case the MAC address is not specified by an upper 2590 * MAC client. 2591 */ 2592 if ((mcip->mci_state_flags & MCIS_IS_VNIC) && is_primary && 2593 !is_vnic_primary) { 2594 /* 2595 * The address is being set by the upper MAC client 2596 * of a VNIC. The MAC address was already set by the 2597 * VNIC driver during VNIC creation. 2598 * 2599 * Note: a VNIC has only one MAC address. We return 2600 * the MAC unicast address handle of the lower MAC client 2601 * corresponding to the VNIC. We allocate a new entry 2602 * which is flagged appropriately, so that mac_unicast_remove() 2603 * doesn't attempt to free the original entry that 2604 * was allocated by the VNIC driver. 2605 */ 2606 ASSERT(mcip->mci_unicast != NULL); 2607 2608 /* Check for VLAN flags, if present */ 2609 if ((flags & MAC_UNICAST_TAG_DISABLE) != 0) 2610 mcip->mci_state_flags |= MCIS_TAG_DISABLE; 2611 2612 if ((flags & MAC_UNICAST_STRIP_DISABLE) != 0) 2613 mcip->mci_state_flags |= MCIS_STRIP_DISABLE; 2614 2615 if ((flags & MAC_UNICAST_DISABLE_TX_VID_CHECK) != 0) 2616 mcip->mci_state_flags |= MCIS_DISABLE_TX_VID_CHECK; 2617 2618 /* 2619 * Ensure that the primary unicast address of the VNIC 2620 * is added only once unless we have the 2621 * MAC_CLIENT_FLAGS_MULTI_PRIMARY set (and this is not 2622 * a passive MAC client). 2623 */ 2624 if ((mcip->mci_flags & MAC_CLIENT_FLAGS_VNIC_PRIMARY) != 0) { 2625 if ((mcip->mci_flags & 2626 MAC_CLIENT_FLAGS_MULTI_PRIMARY) == 0 || 2627 (mcip->mci_flags & 2628 MAC_CLIENT_FLAGS_PASSIVE_PRIMARY) != 0) { 2629 return (EBUSY); 2630 } 2631 mcip->mci_flags |= MAC_CLIENT_FLAGS_PASSIVE_PRIMARY; 2632 passive_client = B_TRUE; 2633 } 2634 2635 mcip->mci_flags |= MAC_CLIENT_FLAGS_VNIC_PRIMARY; 2636 2637 /* 2638 * Create a handle for vid 0. 2639 */ 2640 ASSERT(vid == VLAN_ID_NONE); 2641 muip = kmem_zalloc(sizeof (mac_unicast_impl_t), KM_SLEEP); 2642 muip->mui_vid = vid; 2643 *mah = (mac_unicast_handle_t)muip; 2644 /* 2645 * This will be used by the caller to defer setting the 2646 * rx functions. 2647 */ 2648 if (passive_client) 2649 return (EAGAIN); 2650 return (0); 2651 } 2652 2653 /* primary MAC clients cannot be opened on top of anchor VNICs */ 2654 if ((is_vnic_primary || is_primary) && 2655 i_mac_capab_get((mac_handle_t)mip, MAC_CAPAB_ANCHOR_VNIC, NULL)) { 2656 return (ENXIO); 2657 } 2658 2659 /* 2660 * If this is a VNIC/VLAN, disable softmac fast-path. This is 2661 * only relevant to legacy devices which use softmac to 2662 * interface with GLDv3. 2663 */ 2664 if (mcip->mci_state_flags & MCIS_IS_VNIC) { 2665 err = mac_fastpath_disable((mac_handle_t)mip); 2666 if (err != 0) 2667 return (err); 2668 fastpath_disabled = B_TRUE; 2669 } 2670 2671 /* 2672 * Return EBUSY if: 2673 * - there is an exclusively active mac client exists. 2674 * - this is an exclusive active mac client but 2675 * a. there is already active mac clients exist, or 2676 * b. fastpath streams are already plumbed on this legacy device 2677 * - the mac creator has disallowed active mac clients. 2678 */ 2679 if (mip->mi_state_flags & (MIS_EXCLUSIVE|MIS_NO_ACTIVE)) { 2680 if (fastpath_disabled) 2681 mac_fastpath_enable((mac_handle_t)mip); 2682 return (EBUSY); 2683 } 2684 2685 if (mcip->mci_state_flags & MCIS_EXCLUSIVE) { 2686 ASSERT(!fastpath_disabled); 2687 if (mip->mi_nactiveclients != 0) 2688 return (EBUSY); 2689 2690 if ((mip->mi_state_flags & MIS_LEGACY) && 2691 !(mip->mi_capab_legacy.ml_active_set(mip->mi_driver))) { 2692 return (EBUSY); 2693 } 2694 mip->mi_state_flags |= MIS_EXCLUSIVE; 2695 } 2696 2697 mrp = kmem_zalloc(sizeof (*mrp), KM_SLEEP); 2698 if (is_primary && !(mcip->mci_state_flags & (MCIS_IS_VNIC | 2699 MCIS_IS_AGGR_PORT))) { 2700 /* 2701 * Apply the property cached in the mac_impl_t to the primary 2702 * mac client. If the mac client is a VNIC or an aggregation 2703 * port, its property should be set in the mcip when the 2704 * VNIC/aggr was created. 2705 */ 2706 mac_get_resources((mac_handle_t)mip, mrp); 2707 (void) mac_client_set_resources(mch, mrp); 2708 } else if (mcip->mci_state_flags & MCIS_IS_VNIC) { 2709 /* 2710 * This is a VLAN client sharing the address of the 2711 * primary MAC client; i.e., one created via dladm 2712 * create-vlan. We don't support specifying ring 2713 * properties for this type of client as it inherits 2714 * these from the primary MAC client. 2715 */ 2716 if (is_vnic_primary) { 2717 mac_resource_props_t *vmrp; 2718 2719 vmrp = MCIP_RESOURCE_PROPS(mcip); 2720 if (vmrp->mrp_mask & MRP_RX_RINGS || 2721 vmrp->mrp_mask & MRP_TX_RINGS) { 2722 if (fastpath_disabled) 2723 mac_fastpath_enable((mac_handle_t)mip); 2724 kmem_free(mrp, sizeof (*mrp)); 2725 return (ENOTSUP); 2726 } 2727 /* 2728 * Additionally we also need to inherit any 2729 * rings property from the MAC. 2730 */ 2731 mac_get_resources((mac_handle_t)mip, mrp); 2732 if (mrp->mrp_mask & MRP_RX_RINGS) { 2733 vmrp->mrp_mask |= MRP_RX_RINGS; 2734 vmrp->mrp_nrxrings = mrp->mrp_nrxrings; 2735 } 2736 if (mrp->mrp_mask & MRP_TX_RINGS) { 2737 vmrp->mrp_mask |= MRP_TX_RINGS; 2738 vmrp->mrp_ntxrings = mrp->mrp_ntxrings; 2739 } 2740 } 2741 bcopy(MCIP_RESOURCE_PROPS(mcip), mrp, sizeof (*mrp)); 2742 } 2743 2744 muip = kmem_zalloc(sizeof (mac_unicast_impl_t), KM_SLEEP); 2745 muip->mui_vid = vid; 2746 2747 if (is_primary || is_vnic_primary) { 2748 mac_addr = mip->mi_addr; 2749 } else { 2750 2751 /* 2752 * Verify the validity of the specified MAC addresses value. 2753 */ 2754 if (!mac_unicst_verify((mac_handle_t)mip, mac_addr, mac_len)) { 2755 *diag = MAC_DIAG_MACADDR_INVALID; 2756 err = EINVAL; 2757 goto bail_out; 2758 } 2759 2760 /* 2761 * Make sure that the specified MAC address is different 2762 * than the unicast MAC address of the underlying NIC. 2763 */ 2764 if (bcmp(mip->mi_addr, mac_addr, mac_len) == 0) { 2765 *diag = MAC_DIAG_MACADDR_NIC; 2766 err = EINVAL; 2767 goto bail_out; 2768 } 2769 } 2770 2771 /* 2772 * Set the flags here so that if this is a passive client, we 2773 * can return and set it when we call mac_client_datapath_setup 2774 * when this becomes the active client. If we defer to using these 2775 * flags to mac_client_datapath_setup, then for a passive client, 2776 * we'd have to store the flags somewhere (probably fe_flags) 2777 * and then use it. 2778 */ 2779 if (!MCIP_DATAPATH_SETUP(mcip)) { 2780 if (is_unicast_hw) { 2781 /* 2782 * The client requires a hardware MAC address slot 2783 * for that unicast address. Since we support only 2784 * one unicast MAC address per client, flag the 2785 * MAC client itself. 2786 */ 2787 mcip->mci_state_flags |= MCIS_UNICAST_HW; 2788 } 2789 2790 /* Check for VLAN flags, if present */ 2791 if ((flags & MAC_UNICAST_TAG_DISABLE) != 0) 2792 mcip->mci_state_flags |= MCIS_TAG_DISABLE; 2793 2794 if ((flags & MAC_UNICAST_STRIP_DISABLE) != 0) 2795 mcip->mci_state_flags |= MCIS_STRIP_DISABLE; 2796 2797 if ((flags & MAC_UNICAST_DISABLE_TX_VID_CHECK) != 0) 2798 mcip->mci_state_flags |= MCIS_DISABLE_TX_VID_CHECK; 2799 } else { 2800 /* 2801 * Assert that the specified flags are consistent with the 2802 * flags specified by previous calls to mac_unicast_add(). 2803 */ 2804 ASSERT(((flags & MAC_UNICAST_TAG_DISABLE) != 0 && 2805 (mcip->mci_state_flags & MCIS_TAG_DISABLE) != 0) || 2806 ((flags & MAC_UNICAST_TAG_DISABLE) == 0 && 2807 (mcip->mci_state_flags & MCIS_TAG_DISABLE) == 0)); 2808 2809 ASSERT(((flags & MAC_UNICAST_STRIP_DISABLE) != 0 && 2810 (mcip->mci_state_flags & MCIS_STRIP_DISABLE) != 0) || 2811 ((flags & MAC_UNICAST_STRIP_DISABLE) == 0 && 2812 (mcip->mci_state_flags & MCIS_STRIP_DISABLE) == 0)); 2813 2814 ASSERT(((flags & MAC_UNICAST_DISABLE_TX_VID_CHECK) != 0 && 2815 (mcip->mci_state_flags & MCIS_DISABLE_TX_VID_CHECK) != 0) || 2816 ((flags & MAC_UNICAST_DISABLE_TX_VID_CHECK) == 0 && 2817 (mcip->mci_state_flags & MCIS_DISABLE_TX_VID_CHECK) == 0)); 2818 2819 /* 2820 * Make sure the client is consistent about its requests 2821 * for MAC addresses. I.e. all requests from the clients 2822 * must have the MAC_UNICAST_HW flag set or clear. 2823 */ 2824 if (((mcip->mci_state_flags & MCIS_UNICAST_HW) != 0 && 2825 !is_unicast_hw) || 2826 ((mcip->mci_state_flags & MCIS_UNICAST_HW) == 0 && 2827 is_unicast_hw)) { 2828 err = EINVAL; 2829 goto bail_out; 2830 } 2831 } 2832 /* 2833 * Make sure the MAC address is not already used by 2834 * another MAC client defined on top of the same 2835 * underlying NIC. Unless we have MAC_CLIENT_FLAGS_MULTI_PRIMARY 2836 * set when we allow a passive client to be present which will 2837 * be activated when the currently active client goes away - this 2838 * works only with primary addresses. 2839 */ 2840 if (mac_addr_in_use(mip, mac_addr, vid)) { 2841 /* 2842 * Must have set the multiple primary address flag when 2843 * we did a mac_client_open AND this should be a primary 2844 * MAC client AND there should not already be a passive 2845 * primary. If all is true then we let this succeed 2846 * even if the address is a dup. 2847 */ 2848 if ((mcip->mci_flags & MAC_CLIENT_FLAGS_MULTI_PRIMARY) == 0 || 2849 (mcip->mci_flags & MAC_CLIENT_FLAGS_PRIMARY) == 0 || 2850 mac_get_passive_primary_client(mip) != NULL) { 2851 *diag = MAC_DIAG_MACADDR_INUSE; 2852 err = EEXIST; 2853 goto bail_out; 2854 } 2855 ASSERT((mcip->mci_flags & 2856 MAC_CLIENT_FLAGS_PASSIVE_PRIMARY) == 0); 2857 mcip->mci_flags |= MAC_CLIENT_FLAGS_PASSIVE_PRIMARY; 2858 kmem_free(mrp, sizeof (*mrp)); 2859 2860 /* 2861 * Stash the unicast address handle, we will use it when 2862 * we set up the passive client. 2863 */ 2864 mcip->mci_p_unicast_list = muip; 2865 *mah = (mac_unicast_handle_t)muip; 2866 return (0); 2867 } 2868 2869 err = mac_client_datapath_setup(mcip, vid, mac_addr, mrp, 2870 is_primary || is_vnic_primary, muip); 2871 if (err != 0) 2872 goto bail_out; 2873 2874 kmem_free(mrp, sizeof (*mrp)); 2875 *mah = (mac_unicast_handle_t)muip; 2876 return (0); 2877 2878 bail_out: 2879 if (fastpath_disabled) 2880 mac_fastpath_enable((mac_handle_t)mip); 2881 if (mcip->mci_state_flags & MCIS_EXCLUSIVE) { 2882 mip->mi_state_flags &= ~MIS_EXCLUSIVE; 2883 if (mip->mi_state_flags & MIS_LEGACY) { 2884 mip->mi_capab_legacy.ml_active_clear( 2885 mip->mi_driver); 2886 } 2887 } 2888 kmem_free(mrp, sizeof (*mrp)); 2889 kmem_free(muip, sizeof (mac_unicast_impl_t)); 2890 return (err); 2891 } 2892 2893 /* 2894 * Wrapper function to mac_unicast_add when we want to have the same mac 2895 * client open for two instances, one that is currently active and another 2896 * that will become active when the current one is removed. In this case 2897 * mac_unicast_add will return EGAIN and we will save the rx function and 2898 * arg which will be used when we activate the passive client in 2899 * mac_unicast_remove. 2900 */ 2901 int 2902 mac_unicast_add_set_rx(mac_client_handle_t mch, uint8_t *mac_addr, 2903 uint16_t flags, mac_unicast_handle_t *mah, uint16_t vid, mac_diag_t *diag, 2904 mac_rx_t rx_fn, void *arg) 2905 { 2906 mac_client_impl_t *mcip = (mac_client_impl_t *)mch; 2907 uint_t err; 2908 2909 err = mac_unicast_add(mch, mac_addr, flags, mah, vid, diag); 2910 if (err != 0 && err != EAGAIN) 2911 return (err); 2912 if (err == EAGAIN) { 2913 if (rx_fn != NULL) { 2914 mcip->mci_rx_p_fn = rx_fn; 2915 mcip->mci_rx_p_arg = arg; 2916 } 2917 return (0); 2918 } 2919 if (rx_fn != NULL) 2920 mac_rx_set(mch, rx_fn, arg); 2921 return (err); 2922 } 2923 2924 int 2925 mac_unicast_add(mac_client_handle_t mch, uint8_t *mac_addr, uint16_t flags, 2926 mac_unicast_handle_t *mah, uint16_t vid, mac_diag_t *diag) 2927 { 2928 mac_impl_t *mip = ((mac_client_impl_t *)mch)->mci_mip; 2929 uint_t err; 2930 2931 i_mac_perim_enter(mip); 2932 err = i_mac_unicast_add(mch, mac_addr, flags, mah, vid, diag); 2933 i_mac_perim_exit(mip); 2934 2935 return (err); 2936 } 2937 2938 static void 2939 mac_client_datapath_teardown(mac_client_handle_t mch, mac_unicast_impl_t *muip, 2940 flow_entry_t *flent) 2941 { 2942 mac_client_impl_t *mcip = (mac_client_impl_t *)mch; 2943 mac_impl_t *mip = mcip->mci_mip; 2944 boolean_t no_unicast; 2945 2946 /* 2947 * If we have not added a unicast address for this MAC client, just 2948 * teardown the datapath. 2949 */ 2950 no_unicast = mcip->mci_state_flags & MCIS_NO_UNICAST_ADDR; 2951 2952 if (!no_unicast) { 2953 /* 2954 * We would have initialized subflows etc. only if we brought 2955 * up the primary client and set the unicast unicast address 2956 * etc. Deactivate the flows. The flow entry will be removed 2957 * from the active flow tables, and the associated SRS, 2958 * softrings etc will be deleted. But the flow entry itself 2959 * won't be destroyed, instead it will continue to be archived 2960 * off the the global flow hash list, for a possible future 2961 * activation when say IP is plumbed again. 2962 */ 2963 mac_link_release_flows(mch); 2964 } 2965 mip->mi_nactiveclients--; 2966 mac_update_single_active_client(mip); 2967 2968 /* Tear down the data path */ 2969 mac_datapath_teardown(mcip, mcip->mci_flent, SRST_LINK); 2970 2971 /* 2972 * Prevent any future access to the flow entry through the mci_flent 2973 * pointer by setting the mci_flent to NULL. Access to mci_flent in 2974 * mac_bcast_send is also under mi_rw_lock. 2975 */ 2976 rw_enter(&mip->mi_rw_lock, RW_WRITER); 2977 flent = mcip->mci_flent; 2978 mac_client_remove_flow_from_list(mcip, flent); 2979 2980 if (mcip->mci_state_flags & MCIS_DESC_LOGGED) 2981 mcip->mci_state_flags &= ~MCIS_DESC_LOGGED; 2982 2983 /* 2984 * This is the last unicast address being removed and there shouldn't 2985 * be any outbound data threads at this point coming down from mac 2986 * clients. We have waited for the data threads to finish before 2987 * starting dld_str_detach. Non-data threads must access TX SRS 2988 * under mi_rw_lock. 2989 */ 2990 rw_exit(&mip->mi_rw_lock); 2991 2992 /* 2993 * Don't use FLOW_MARK with FE_MC_NO_DATAPATH, as the flow might 2994 * contain other flags, such as FE_CONDEMNED, which we need to 2995 * cleared. We don't call mac_flow_cleanup() for this unicast 2996 * flow as we have a already cleaned up SRSs etc. (via the teadown 2997 * path). We just clear the stats and reset the initial callback 2998 * function, the rest will be set when we call mac_flow_create, 2999 * if at all. 3000 */ 3001 mutex_enter(&flent->fe_lock); 3002 ASSERT(flent->fe_refcnt == 1 && flent->fe_mbg == NULL && 3003 flent->fe_tx_srs == NULL && flent->fe_rx_srs_cnt == 0); 3004 flent->fe_flags = FE_MC_NO_DATAPATH; 3005 flow_stat_destroy(flent); 3006 mac_misc_stat_delete(flent); 3007 3008 /* Initialize the receiver function to a safe routine */ 3009 flent->fe_cb_fn = (flow_fn_t)mac_rx_def; 3010 flent->fe_cb_arg1 = NULL; 3011 flent->fe_cb_arg2 = NULL; 3012 3013 flent->fe_index = -1; 3014 mutex_exit(&flent->fe_lock); 3015 3016 if (mip->mi_type->mt_brdcst_addr != NULL) { 3017 ASSERT(muip != NULL || no_unicast); 3018 mac_bcast_delete(mcip, mip->mi_type->mt_brdcst_addr, 3019 muip != NULL ? muip->mui_vid : VLAN_ID_NONE); 3020 } 3021 3022 if (mip->mi_nactiveclients == 1) { 3023 mac_capab_update((mac_handle_t)mip); 3024 mac_virtual_link_update(mip); 3025 } 3026 3027 if (mcip->mci_state_flags & MCIS_EXCLUSIVE) { 3028 mip->mi_state_flags &= ~MIS_EXCLUSIVE; 3029 3030 if (mip->mi_state_flags & MIS_LEGACY) 3031 mip->mi_capab_legacy.ml_active_clear(mip->mi_driver); 3032 } 3033 3034 mcip->mci_state_flags &= ~MCIS_UNICAST_HW; 3035 3036 if (mcip->mci_state_flags & MCIS_TAG_DISABLE) 3037 mcip->mci_state_flags &= ~MCIS_TAG_DISABLE; 3038 3039 if (mcip->mci_state_flags & MCIS_STRIP_DISABLE) 3040 mcip->mci_state_flags &= ~MCIS_STRIP_DISABLE; 3041 3042 if (mcip->mci_state_flags & MCIS_DISABLE_TX_VID_CHECK) 3043 mcip->mci_state_flags &= ~MCIS_DISABLE_TX_VID_CHECK; 3044 3045 if (muip != NULL) 3046 kmem_free(muip, sizeof (mac_unicast_impl_t)); 3047 mac_protect_cancel_timer(mcip); 3048 mac_protect_flush_dynamic(mcip); 3049 3050 bzero(&mcip->mci_misc_stat, sizeof (mcip->mci_misc_stat)); 3051 /* 3052 * Disable fastpath if this is a VNIC or a VLAN. 3053 */ 3054 if (mcip->mci_state_flags & MCIS_IS_VNIC) 3055 mac_fastpath_enable((mac_handle_t)mip); 3056 mac_stop((mac_handle_t)mip); 3057 } 3058 3059 /* 3060 * Remove a MAC address which was previously added by mac_unicast_add(). 3061 */ 3062 int 3063 mac_unicast_remove(mac_client_handle_t mch, mac_unicast_handle_t mah) 3064 { 3065 mac_client_impl_t *mcip = (mac_client_impl_t *)mch; 3066 mac_unicast_impl_t *muip = (mac_unicast_impl_t *)mah; 3067 mac_unicast_impl_t *pre; 3068 mac_impl_t *mip = mcip->mci_mip; 3069 flow_entry_t *flent; 3070 uint16_t mui_vid; 3071 3072 i_mac_perim_enter(mip); 3073 if (mcip->mci_flags & MAC_CLIENT_FLAGS_VNIC_PRIMARY) { 3074 /* 3075 * Call made by the upper MAC client of a VNIC. 3076 * There's nothing much to do, the unicast address will 3077 * be removed by the VNIC driver when the VNIC is deleted, 3078 * but let's ensure that all our transmit is done before 3079 * the client does a mac_client_stop lest it trigger an 3080 * assert in the driver. 3081 */ 3082 ASSERT(muip->mui_vid == VLAN_ID_NONE); 3083 3084 mac_tx_client_flush(mcip); 3085 3086 if ((mcip->mci_flags & MAC_CLIENT_FLAGS_PASSIVE_PRIMARY) != 0) { 3087 mcip->mci_flags &= ~MAC_CLIENT_FLAGS_PASSIVE_PRIMARY; 3088 if (mcip->mci_rx_p_fn != NULL) { 3089 mac_rx_set(mch, mcip->mci_rx_p_fn, 3090 mcip->mci_rx_p_arg); 3091 mcip->mci_rx_p_fn = NULL; 3092 mcip->mci_rx_p_arg = NULL; 3093 } 3094 kmem_free(muip, sizeof (mac_unicast_impl_t)); 3095 i_mac_perim_exit(mip); 3096 return (0); 3097 } 3098 mcip->mci_flags &= ~MAC_CLIENT_FLAGS_VNIC_PRIMARY; 3099 3100 if (mcip->mci_state_flags & MCIS_TAG_DISABLE) 3101 mcip->mci_state_flags &= ~MCIS_TAG_DISABLE; 3102 3103 if (mcip->mci_state_flags & MCIS_STRIP_DISABLE) 3104 mcip->mci_state_flags &= ~MCIS_STRIP_DISABLE; 3105 3106 if (mcip->mci_state_flags & MCIS_DISABLE_TX_VID_CHECK) 3107 mcip->mci_state_flags &= ~MCIS_DISABLE_TX_VID_CHECK; 3108 3109 kmem_free(muip, sizeof (mac_unicast_impl_t)); 3110 i_mac_perim_exit(mip); 3111 return (0); 3112 } 3113 3114 ASSERT(muip != NULL); 3115 3116 /* 3117 * We are removing a passive client, we haven't setup the datapath 3118 * for this yet, so nothing much to do. 3119 */ 3120 if ((mcip->mci_flags & MAC_CLIENT_FLAGS_PASSIVE_PRIMARY) != 0) { 3121 3122 ASSERT((mcip->mci_flent->fe_flags & FE_MC_NO_DATAPATH) != 0); 3123 ASSERT(mcip->mci_p_unicast_list == muip); 3124 3125 mcip->mci_flags &= ~MAC_CLIENT_FLAGS_PASSIVE_PRIMARY; 3126 3127 mcip->mci_p_unicast_list = NULL; 3128 mcip->mci_rx_p_fn = NULL; 3129 mcip->mci_rx_p_arg = NULL; 3130 3131 mcip->mci_state_flags &= ~MCIS_UNICAST_HW; 3132 3133 if (mcip->mci_state_flags & MCIS_TAG_DISABLE) 3134 mcip->mci_state_flags &= ~MCIS_TAG_DISABLE; 3135 3136 if (mcip->mci_state_flags & MCIS_STRIP_DISABLE) 3137 mcip->mci_state_flags &= ~MCIS_STRIP_DISABLE; 3138 3139 if (mcip->mci_state_flags & MCIS_DISABLE_TX_VID_CHECK) 3140 mcip->mci_state_flags &= ~MCIS_DISABLE_TX_VID_CHECK; 3141 3142 kmem_free(muip, sizeof (mac_unicast_impl_t)); 3143 i_mac_perim_exit(mip); 3144 return (0); 3145 } 3146 3147 /* 3148 * Remove the VID from the list of client's VIDs. 3149 */ 3150 pre = mcip->mci_unicast_list; 3151 if (muip == pre) { 3152 mcip->mci_unicast_list = muip->mui_next; 3153 } else { 3154 while ((pre->mui_next != NULL) && (pre->mui_next != muip)) 3155 pre = pre->mui_next; 3156 ASSERT(pre->mui_next == muip); 3157 rw_enter(&mcip->mci_rw_lock, RW_WRITER); 3158 pre->mui_next = muip->mui_next; 3159 rw_exit(&mcip->mci_rw_lock); 3160 } 3161 3162 if (!mac_client_single_rcvr(mcip)) { 3163 /* 3164 * This MAC client is shared by more than one unicast 3165 * addresses, so we will just remove the flent 3166 * corresponding to the address being removed. We don't invoke 3167 * mac_rx_classify_flow_rem() since the additional flow is 3168 * not associated with its own separate set of SRS and rings, 3169 * and these constructs are still needed for the remaining 3170 * flows. 3171 */ 3172 flent = mac_client_get_flow(mcip, muip); 3173 VERIFY3P(flent, !=, NULL); 3174 3175 /* 3176 * The first one is disappearing, need to make sure 3177 * we replace it with another from the list of 3178 * shared clients. 3179 */ 3180 if (flent == mcip->mci_flent) 3181 flent = mac_client_swap_mciflent(mcip); 3182 mac_client_remove_flow_from_list(mcip, flent); 3183 mac_flow_remove(mip->mi_flow_tab, flent, B_FALSE); 3184 mac_flow_wait(flent, FLOW_DRIVER_UPCALL); 3185 3186 /* 3187 * The multicast groups that were added by the client so 3188 * far must be removed from the brodcast domain corresponding 3189 * to the VID being removed. 3190 */ 3191 mac_client_bcast_refresh(mcip, mac_client_update_mcast, 3192 (void *)flent, B_FALSE); 3193 3194 if (mip->mi_type->mt_brdcst_addr != NULL) { 3195 mac_bcast_delete(mcip, mip->mi_type->mt_brdcst_addr, 3196 muip->mui_vid); 3197 } 3198 3199 FLOW_FINAL_REFRELE(flent); 3200 ASSERT(!(mcip->mci_state_flags & MCIS_EXCLUSIVE)); 3201 3202 /* 3203 * Enable fastpath if this is a VNIC or a VLAN. 3204 */ 3205 if (mcip->mci_state_flags & MCIS_IS_VNIC) 3206 mac_fastpath_enable((mac_handle_t)mip); 3207 mac_stop((mac_handle_t)mip); 3208 i_mac_perim_exit(mip); 3209 return (0); 3210 } 3211 3212 mui_vid = muip->mui_vid; 3213 mac_client_datapath_teardown(mch, muip, flent); 3214 3215 if ((mcip->mci_flags & MAC_CLIENT_FLAGS_PRIMARY) && 3216 mui_vid == VLAN_ID_NONE) { 3217 mcip->mci_flags &= ~MAC_CLIENT_FLAGS_PRIMARY; 3218 } else { 3219 i_mac_perim_exit(mip); 3220 return (0); 3221 } 3222 3223 /* 3224 * If we are removing the primary, check if we have a passive primary 3225 * client that we need to activate now. 3226 */ 3227 mcip = mac_get_passive_primary_client(mip); 3228 if (mcip != NULL) { 3229 mac_resource_props_t *mrp; 3230 mac_unicast_impl_t *muip; 3231 3232 mcip->mci_flags &= ~MAC_CLIENT_FLAGS_PASSIVE_PRIMARY; 3233 mrp = kmem_zalloc(sizeof (*mrp), KM_SLEEP); 3234 3235 /* 3236 * Apply the property cached in the mac_impl_t to the 3237 * primary mac client. 3238 */ 3239 mac_get_resources((mac_handle_t)mip, mrp); 3240 (void) mac_client_set_resources(mch, mrp); 3241 ASSERT(mcip->mci_p_unicast_list != NULL); 3242 muip = mcip->mci_p_unicast_list; 3243 mcip->mci_p_unicast_list = NULL; 3244 if (mac_client_datapath_setup(mcip, VLAN_ID_NONE, 3245 mip->mi_addr, mrp, B_TRUE, muip) == 0) { 3246 if (mcip->mci_rx_p_fn != NULL) { 3247 mac_rx_set(mch, mcip->mci_rx_p_fn, 3248 mcip->mci_rx_p_arg); 3249 mcip->mci_rx_p_fn = NULL; 3250 mcip->mci_rx_p_arg = NULL; 3251 } 3252 } else { 3253 kmem_free(muip, sizeof (mac_unicast_impl_t)); 3254 } 3255 kmem_free(mrp, sizeof (*mrp)); 3256 } 3257 i_mac_perim_exit(mip); 3258 return (0); 3259 } 3260 3261 /* 3262 * Multicast add function invoked by MAC clients. 3263 */ 3264 int 3265 mac_multicast_add(mac_client_handle_t mch, const uint8_t *addr) 3266 { 3267 mac_client_impl_t *mcip = (mac_client_impl_t *)mch; 3268 mac_impl_t *mip = mcip->mci_mip; 3269 flow_entry_t *flent = mcip->mci_flent_list; 3270 flow_entry_t *prev_fe = NULL; 3271 uint16_t vid; 3272 int err = 0; 3273 3274 /* Verify the address is a valid multicast address */ 3275 if ((err = mip->mi_type->mt_ops.mtops_multicst_verify(addr, 3276 mip->mi_pdata)) != 0) 3277 return (err); 3278 3279 i_mac_perim_enter(mip); 3280 while (flent != NULL) { 3281 vid = i_mac_flow_vid(flent); 3282 3283 err = mac_bcast_add((mac_client_impl_t *)mch, addr, vid, 3284 MAC_ADDRTYPE_MULTICAST); 3285 if (err != 0) 3286 break; 3287 prev_fe = flent; 3288 flent = flent->fe_client_next; 3289 } 3290 3291 /* 3292 * If we failed adding, then undo all, rather than partial 3293 * success. 3294 */ 3295 if (flent != NULL && prev_fe != NULL) { 3296 flent = mcip->mci_flent_list; 3297 while (flent != prev_fe->fe_client_next) { 3298 vid = i_mac_flow_vid(flent); 3299 mac_bcast_delete((mac_client_impl_t *)mch, addr, vid); 3300 flent = flent->fe_client_next; 3301 } 3302 } 3303 i_mac_perim_exit(mip); 3304 return (err); 3305 } 3306 3307 /* 3308 * Multicast delete function invoked by MAC clients. 3309 */ 3310 void 3311 mac_multicast_remove(mac_client_handle_t mch, const uint8_t *addr) 3312 { 3313 mac_client_impl_t *mcip = (mac_client_impl_t *)mch; 3314 mac_impl_t *mip = mcip->mci_mip; 3315 flow_entry_t *flent; 3316 uint16_t vid; 3317 3318 i_mac_perim_enter(mip); 3319 for (flent = mcip->mci_flent_list; flent != NULL; 3320 flent = flent->fe_client_next) { 3321 vid = i_mac_flow_vid(flent); 3322 mac_bcast_delete((mac_client_impl_t *)mch, addr, vid); 3323 } 3324 i_mac_perim_exit(mip); 3325 } 3326 3327 /* 3328 * When a MAC client desires to capture packets on an interface, 3329 * it registers a promiscuous call back with mac_promisc_add(). 3330 * There are three types of promiscuous callbacks: 3331 * 3332 * * MAC_CLIENT_PROMISC_ALL 3333 * Captures all packets sent and received by the MAC client, 3334 * the physical interface, as well as all other MAC clients 3335 * defined on top of the same MAC. 3336 * 3337 * * MAC_CLIENT_PROMISC_FILTERED 3338 * Captures all packets sent and received by the MAC client, 3339 * plus all multicast traffic sent and received by the phyisical 3340 * interface and the other MAC clients. 3341 * 3342 * * MAC_CLIENT_PROMISC_MULTI 3343 * Captures all broadcast and multicast packets sent and 3344 * received by the MAC clients as well as the physical interface. 3345 * 3346 * In all cases, the underlying MAC is put in promiscuous mode. 3347 */ 3348 int 3349 mac_promisc_add(mac_client_handle_t mch, mac_client_promisc_type_t type, 3350 mac_rx_t fn, void *arg, mac_promisc_handle_t *mphp, uint16_t flags) 3351 { 3352 mac_client_impl_t *mcip = (mac_client_impl_t *)mch; 3353 mac_impl_t *mip = mcip->mci_mip; 3354 mac_promisc_impl_t *mpip; 3355 mac_cb_info_t *mcbi; 3356 int rc; 3357 3358 boolean_t no_tx_loop = ((flags & MAC_PROMISC_FLAGS_NO_TX_LOOP) != 0); 3359 boolean_t rx_only = ((flags & MAC_PROMISC_FLAGS_RX_ONLY) != 0); 3360 boolean_t tx_only = ((flags & MAC_PROMISC_FLAGS_TX_ONLY) != 0); 3361 3362 if (no_tx_loop && tx_only) 3363 return (EINVAL); 3364 if (rx_only && tx_only) 3365 return (EINVAL); 3366 3367 i_mac_perim_enter(mip); 3368 3369 if ((rc = mac_start((mac_handle_t)mip)) != 0) { 3370 i_mac_perim_exit(mip); 3371 return (rc); 3372 } 3373 3374 if ((mcip->mci_state_flags & MCIS_IS_VNIC) && 3375 type == MAC_CLIENT_PROMISC_ALL && 3376 (mcip->mci_protect_flags & MPT_FLAG_PROMISC_FILTERED)) { 3377 /* 3378 * The function is being invoked by the upper MAC client 3379 * of a VNIC. The VNIC should only see the traffic 3380 * it is entitled to. 3381 */ 3382 type = MAC_CLIENT_PROMISC_FILTERED; 3383 } 3384 3385 3386 /* 3387 * Turn on promiscuous mode for the underlying NIC. 3388 * This is needed even for filtered callbacks which 3389 * expect to receive all multicast traffic on the wire. 3390 * 3391 * Physical promiscuous mode should not be turned on if 3392 * MAC_PROMISC_FLAGS_NO_PHYS is set. 3393 */ 3394 if ((flags & MAC_PROMISC_FLAGS_NO_PHYS) == 0) { 3395 if ((rc = i_mac_promisc_set(mip, B_TRUE)) != 0) { 3396 mac_stop((mac_handle_t)mip); 3397 i_mac_perim_exit(mip); 3398 return (rc); 3399 } 3400 } 3401 3402 mpip = kmem_cache_alloc(mac_promisc_impl_cache, KM_SLEEP); 3403 3404 mpip->mpi_type = type; 3405 mpip->mpi_fn = fn; 3406 mpip->mpi_arg = arg; 3407 mpip->mpi_mcip = mcip; 3408 mpip->mpi_no_tx_loop = no_tx_loop; 3409 mpip->mpi_no_phys = ((flags & MAC_PROMISC_FLAGS_NO_PHYS) != 0); 3410 mpip->mpi_strip_vlan_tag = 3411 ((flags & MAC_PROMISC_FLAGS_VLAN_TAG_STRIP) != 0); 3412 mpip->mpi_no_copy = ((flags & MAC_PROMISC_FLAGS_NO_COPY) != 0); 3413 mpip->mpi_rx_only = rx_only; 3414 mpip->mpi_tx_only = tx_only; 3415 3416 mcbi = &mip->mi_promisc_cb_info; 3417 mutex_enter(mcbi->mcbi_lockp); 3418 3419 mac_callback_add(&mip->mi_promisc_cb_info, &mcip->mci_promisc_list, 3420 &mpip->mpi_mci_link); 3421 mac_callback_add(&mip->mi_promisc_cb_info, &mip->mi_promisc_list, 3422 &mpip->mpi_mi_link); 3423 3424 mutex_exit(mcbi->mcbi_lockp); 3425 3426 *mphp = (mac_promisc_handle_t)mpip; 3427 3428 if (mcip->mci_state_flags & MCIS_IS_VNIC) { 3429 mac_impl_t *umip = mcip->mci_upper_mip; 3430 3431 ASSERT(umip != NULL); 3432 mac_vnic_secondary_update(umip); 3433 } 3434 3435 i_mac_perim_exit(mip); 3436 3437 return (0); 3438 } 3439 3440 /* 3441 * Remove a multicast address previously aded through mac_promisc_add(). 3442 */ 3443 void 3444 mac_promisc_remove(mac_promisc_handle_t mph) 3445 { 3446 mac_promisc_impl_t *mpip = (mac_promisc_impl_t *)mph; 3447 mac_client_impl_t *mcip = mpip->mpi_mcip; 3448 mac_impl_t *mip = mcip->mci_mip; 3449 mac_cb_info_t *mcbi; 3450 int rv; 3451 3452 i_mac_perim_enter(mip); 3453 3454 /* 3455 * Even if the device can't be reset into normal mode, we still 3456 * need to clear the client promisc callbacks. The client may want 3457 * to close the mac end point and we can't have stale callbacks. 3458 */ 3459 if (!(mpip->mpi_no_phys)) { 3460 if ((rv = i_mac_promisc_set(mip, B_FALSE)) != 0) { 3461 cmn_err(CE_WARN, "%s: failed to switch OFF promiscuous" 3462 " mode because of error 0x%x", mip->mi_name, rv); 3463 } 3464 } 3465 mcbi = &mip->mi_promisc_cb_info; 3466 mutex_enter(mcbi->mcbi_lockp); 3467 if (mac_callback_remove(mcbi, &mip->mi_promisc_list, 3468 &mpip->mpi_mi_link)) { 3469 VERIFY(mac_callback_remove(&mip->mi_promisc_cb_info, 3470 &mcip->mci_promisc_list, &mpip->mpi_mci_link)); 3471 kmem_cache_free(mac_promisc_impl_cache, mpip); 3472 } else { 3473 mac_callback_remove_wait(&mip->mi_promisc_cb_info); 3474 } 3475 3476 if (mcip->mci_state_flags & MCIS_IS_VNIC) { 3477 mac_impl_t *umip = mcip->mci_upper_mip; 3478 3479 ASSERT(umip != NULL); 3480 mac_vnic_secondary_update(umip); 3481 } 3482 3483 mutex_exit(mcbi->mcbi_lockp); 3484 mac_stop((mac_handle_t)mip); 3485 3486 i_mac_perim_exit(mip); 3487 } 3488 3489 /* 3490 * Reference count the number of active Tx threads. MCI_TX_QUIESCE indicates 3491 * that a control operation wants to quiesce the Tx data flow in which case 3492 * we return an error. Holding any of the per cpu locks ensures that the 3493 * mci_tx_flag won't change. 3494 * 3495 * 'CPU' must be accessed just once and used to compute the index into the 3496 * percpu array, and that index must be used for the entire duration of the 3497 * packet send operation. Note that the thread may be preempted and run on 3498 * another cpu any time and so we can't use 'CPU' more than once for the 3499 * operation. 3500 */ 3501 #define MAC_TX_TRY_HOLD(mcip, mytx, error) \ 3502 { \ 3503 (error) = 0; \ 3504 (mytx) = &(mcip)->mci_tx_pcpu[CPU->cpu_seqid & mac_tx_percpu_cnt]; \ 3505 mutex_enter(&(mytx)->pcpu_tx_lock); \ 3506 if (!((mcip)->mci_tx_flag & MCI_TX_QUIESCE)) { \ 3507 (mytx)->pcpu_tx_refcnt++; \ 3508 } else { \ 3509 (error) = -1; \ 3510 } \ 3511 mutex_exit(&(mytx)->pcpu_tx_lock); \ 3512 } 3513 3514 /* 3515 * Release the reference. If needed, signal any control operation waiting 3516 * for Tx quiescence. The wait and signal are always done using the 3517 * mci_tx_pcpu[0]'s lock 3518 */ 3519 #define MAC_TX_RELE(mcip, mytx) { \ 3520 mutex_enter(&(mytx)->pcpu_tx_lock); \ 3521 if (--(mytx)->pcpu_tx_refcnt == 0 && \ 3522 (mcip)->mci_tx_flag & MCI_TX_QUIESCE) { \ 3523 mutex_exit(&(mytx)->pcpu_tx_lock); \ 3524 mutex_enter(&(mcip)->mci_tx_pcpu[0].pcpu_tx_lock); \ 3525 cv_signal(&(mcip)->mci_tx_cv); \ 3526 mutex_exit(&(mcip)->mci_tx_pcpu[0].pcpu_tx_lock); \ 3527 } else { \ 3528 mutex_exit(&(mytx)->pcpu_tx_lock); \ 3529 } \ 3530 } 3531 3532 /* 3533 * Send function invoked by MAC clients. 3534 */ 3535 mac_tx_cookie_t 3536 mac_tx(mac_client_handle_t mch, mblk_t *mp_chain, uintptr_t hint, 3537 uint16_t flag, mblk_t **ret_mp) 3538 { 3539 mac_tx_cookie_t cookie = 0; 3540 int error; 3541 mac_tx_percpu_t *mytx; 3542 mac_soft_ring_set_t *srs; 3543 flow_entry_t *flent; 3544 boolean_t is_subflow = B_FALSE; 3545 mac_client_impl_t *mcip = (mac_client_impl_t *)mch; 3546 mac_impl_t *mip = mcip->mci_mip; 3547 mac_srs_tx_t *srs_tx; 3548 3549 /* 3550 * Check whether the active Tx threads count is bumped already. 3551 */ 3552 if (!(flag & MAC_TX_NO_HOLD)) { 3553 MAC_TX_TRY_HOLD(mcip, mytx, error); 3554 if (error != 0) { 3555 freemsgchain(mp_chain); 3556 return (0); 3557 } 3558 } 3559 3560 /* 3561 * If mac protection is enabled, only the permissible packets will be 3562 * returned by mac_protect_check(). 3563 */ 3564 if ((mcip->mci_flent-> 3565 fe_resource_props.mrp_mask & MRP_PROTECT) != 0 && 3566 (mp_chain = mac_protect_check(mch, mp_chain)) == NULL) 3567 goto done; 3568 3569 if (mcip->mci_subflow_tab != NULL && 3570 mcip->mci_subflow_tab->ft_flow_count > 0 && 3571 mac_flow_lookup(mcip->mci_subflow_tab, mp_chain, 3572 FLOW_OUTBOUND, &flent) == 0) { 3573 /* 3574 * The main assumption here is that if in the event 3575 * we get a chain, all the packets will be classified 3576 * to the same Flow/SRS. If this changes for any 3577 * reason, the following logic should change as well. 3578 * I suppose the fanout_hint also assumes this . 3579 */ 3580 ASSERT(flent != NULL); 3581 is_subflow = B_TRUE; 3582 } else { 3583 flent = mcip->mci_flent; 3584 } 3585 3586 srs = flent->fe_tx_srs; 3587 /* 3588 * This is to avoid panics with PF_PACKET that can call mac_tx() 3589 * against an interface that is not capable of sending. A rewrite 3590 * of the mac datapath is required to remove this limitation. 3591 */ 3592 if (srs == NULL) { 3593 freemsgchain(mp_chain); 3594 goto done; 3595 } 3596 3597 srs_tx = &srs->srs_tx; 3598 if (srs_tx->st_mode == SRS_TX_DEFAULT && 3599 (srs->srs_state & SRS_ENQUEUED) == 0 && 3600 mip->mi_nactiveclients == 1 && 3601 mp_chain->b_next == NULL && 3602 (DB_CKSUMFLAGS(mp_chain) & HW_LSO) == 0) { 3603 uint64_t obytes; 3604 3605 /* 3606 * Since dls always opens the underlying MAC, nclients equals 3607 * to 1 means that the only active client is dls itself acting 3608 * as a primary client of the MAC instance. Since dls will not 3609 * send tagged packets in that case, and dls is trusted to send 3610 * packets for its allowed VLAN(s), the VLAN tag insertion and 3611 * check is required only if nclients is greater than 1. 3612 */ 3613 if (mip->mi_nclients > 1) { 3614 if (MAC_VID_CHECK_NEEDED(mcip)) { 3615 int err = 0; 3616 3617 MAC_VID_CHECK(mcip, mp_chain, err); 3618 if (err != 0) { 3619 freemsg(mp_chain); 3620 mcip->mci_misc_stat.mms_txerrors++; 3621 goto done; 3622 } 3623 } 3624 if (MAC_TAG_NEEDED(mcip)) { 3625 mp_chain = mac_add_vlan_tag(mp_chain, 0, 3626 mac_client_vid(mch)); 3627 if (mp_chain == NULL) { 3628 mcip->mci_misc_stat.mms_txerrors++; 3629 goto done; 3630 } 3631 } 3632 } 3633 3634 obytes = (mp_chain->b_cont == NULL ? MBLKL(mp_chain) : 3635 msgdsize(mp_chain)); 3636 3637 mp_chain = mac_provider_tx(mip, 3638 (mac_ring_handle_t)srs_tx->st_arg2, mp_chain, mcip); 3639 3640 if (mp_chain == NULL) { 3641 cookie = 0; 3642 SRS_TX_STAT_UPDATE(srs, opackets, 1); 3643 SRS_TX_STAT_UPDATE(srs, obytes, obytes); 3644 } else { 3645 mutex_enter(&srs->srs_lock); 3646 cookie = mac_tx_srs_no_desc(srs, mp_chain, 3647 flag, ret_mp); 3648 mutex_exit(&srs->srs_lock); 3649 } 3650 } else { 3651 mblk_t *mp = mp_chain; 3652 mblk_t *new_head = NULL; 3653 mblk_t *new_tail = NULL; 3654 3655 /* 3656 * There are occasions where the packets arriving here 3657 * may request hardware offloads that are not 3658 * available from the underlying MAC provider. This 3659 * currently only happens when a packet is sent across 3660 * the MAC-loopback path of one MAC and then forwarded 3661 * (via IP) to another MAC that lacks one or more of 3662 * the hardware offloads provided by the first one. 3663 * However, in the future, we may choose to pretend 3664 * all MAC providers support all offloads, performing 3665 * emulation on Tx as needed. 3666 * 3667 * We iterate each mblk in-turn, emulating hardware 3668 * offloads as required. From this process, we create 3669 * a new chain. The new chain may be the same as the 3670 * original chain (no hardware emulation needed), a 3671 * collection of new mblks (hardware emulation 3672 * needed), or a mix. At this point, the chain is safe 3673 * for consumption by the underlying MAC provider and 3674 * is passed down to the SRS. 3675 */ 3676 while (mp != NULL) { 3677 mblk_t *next = mp->b_next; 3678 mblk_t *tail = NULL; 3679 const uint16_t needed = 3680 (DB_CKSUMFLAGS(mp) ^ mip->mi_tx_cksum_flags) & 3681 DB_CKSUMFLAGS(mp); 3682 3683 mp->b_next = NULL; 3684 3685 if ((needed & (HCK_TX_FLAGS | HW_LSO_FLAGS)) != 0) { 3686 mac_emul_t emul = 0; 3687 3688 if (needed & HCK_IPV4_HDRCKSUM) 3689 emul |= MAC_IPCKSUM_EMUL; 3690 if (needed & (HCK_PARTIALCKSUM | HCK_FULLCKSUM)) 3691 emul |= MAC_HWCKSUM_EMUL; 3692 if (needed & HW_LSO) 3693 emul = MAC_LSO_EMUL; 3694 3695 mac_hw_emul(&mp, &tail, NULL, emul); 3696 3697 if (mp == NULL) { 3698 mp = next; 3699 continue; 3700 } 3701 } 3702 3703 if (new_head == NULL) { 3704 new_head = mp; 3705 } else { 3706 new_tail->b_next = mp; 3707 } 3708 3709 new_tail = (tail == NULL) ? mp : tail; 3710 mp = next; 3711 } 3712 3713 if (new_head == NULL) { 3714 cookie = 0; 3715 goto done; 3716 } 3717 3718 cookie = srs_tx->st_func(srs, new_head, hint, flag, ret_mp); 3719 } 3720 3721 done: 3722 if (is_subflow) 3723 FLOW_REFRELE(flent); 3724 3725 if (!(flag & MAC_TX_NO_HOLD)) 3726 MAC_TX_RELE(mcip, mytx); 3727 3728 return (cookie); 3729 } 3730 3731 /* 3732 * mac_tx_is_blocked 3733 * 3734 * Given a cookie, it returns if the ring identified by the cookie is 3735 * flow-controlled or not. If NULL is passed in place of a cookie, 3736 * then it finds out if any of the underlying rings belonging to the 3737 * SRS is flow controlled or not and returns that status. 3738 */ 3739 /* ARGSUSED */ 3740 boolean_t 3741 mac_tx_is_flow_blocked(mac_client_handle_t mch, mac_tx_cookie_t cookie) 3742 { 3743 mac_client_impl_t *mcip = (mac_client_impl_t *)mch; 3744 mac_soft_ring_set_t *mac_srs; 3745 mac_soft_ring_t *sringp; 3746 boolean_t blocked = B_FALSE; 3747 mac_tx_percpu_t *mytx; 3748 int err; 3749 int i; 3750 3751 /* 3752 * Bump the reference count so that mac_srs won't be deleted. 3753 * If the client is currently quiesced and we failed to bump 3754 * the reference, return B_TRUE so that flow control stays 3755 * as enabled. 3756 * 3757 * Flow control will then be disabled once the client is no 3758 * longer quiesced. 3759 */ 3760 MAC_TX_TRY_HOLD(mcip, mytx, err); 3761 if (err != 0) 3762 return (B_TRUE); 3763 3764 if ((mac_srs = MCIP_TX_SRS(mcip)) == NULL) { 3765 MAC_TX_RELE(mcip, mytx); 3766 return (B_FALSE); 3767 } 3768 3769 mutex_enter(&mac_srs->srs_lock); 3770 /* 3771 * Only in the case of TX_FANOUT and TX_AGGR, the underlying 3772 * softring (s_ring_state) will have the HIWAT set. This is 3773 * the multiple Tx ring flow control case. For all other 3774 * case, SRS (srs_state) will store the condition. 3775 */ 3776 if (mac_srs->srs_tx.st_mode == SRS_TX_FANOUT || 3777 mac_srs->srs_tx.st_mode == SRS_TX_AGGR) { 3778 if (cookie != 0) { 3779 sringp = (mac_soft_ring_t *)cookie; 3780 mutex_enter(&sringp->s_ring_lock); 3781 if (sringp->s_ring_state & S_RING_TX_HIWAT) 3782 blocked = B_TRUE; 3783 mutex_exit(&sringp->s_ring_lock); 3784 } else { 3785 for (i = 0; i < mac_srs->srs_tx_ring_count; i++) { 3786 sringp = mac_srs->srs_tx_soft_rings[i]; 3787 mutex_enter(&sringp->s_ring_lock); 3788 if (sringp->s_ring_state & S_RING_TX_HIWAT) { 3789 blocked = B_TRUE; 3790 mutex_exit(&sringp->s_ring_lock); 3791 break; 3792 } 3793 mutex_exit(&sringp->s_ring_lock); 3794 } 3795 } 3796 } else { 3797 blocked = (mac_srs->srs_state & SRS_TX_HIWAT); 3798 } 3799 mutex_exit(&mac_srs->srs_lock); 3800 MAC_TX_RELE(mcip, mytx); 3801 return (blocked); 3802 } 3803 3804 /* 3805 * Check if the MAC client is the primary MAC client. 3806 */ 3807 boolean_t 3808 mac_is_primary_client(mac_client_impl_t *mcip) 3809 { 3810 return (mcip->mci_flags & MAC_CLIENT_FLAGS_PRIMARY); 3811 } 3812 3813 void 3814 mac_ioctl(mac_handle_t mh, queue_t *wq, mblk_t *bp) 3815 { 3816 mac_impl_t *mip = (mac_impl_t *)mh; 3817 int cmd = ((struct iocblk *)bp->b_rptr)->ioc_cmd; 3818 3819 if ((cmd == ND_GET && (mip->mi_callbacks->mc_callbacks & MC_GETPROP)) || 3820 (cmd == ND_SET && (mip->mi_callbacks->mc_callbacks & MC_SETPROP))) { 3821 /* 3822 * If ndd props were registered, call them. 3823 * Note that ndd ioctls are Obsolete 3824 */ 3825 mac_ndd_ioctl(mip, wq, bp); 3826 return; 3827 } 3828 3829 /* 3830 * Call the driver to handle the ioctl. The driver may not support 3831 * any ioctls, in which case we reply with a NAK on its behalf. 3832 */ 3833 if (mip->mi_callbacks->mc_callbacks & MC_IOCTL) 3834 mip->mi_ioctl(mip->mi_driver, wq, bp); 3835 else 3836 miocnak(wq, bp, 0, EINVAL); 3837 } 3838 3839 /* 3840 * Return the link state of the specified MAC instance. 3841 */ 3842 link_state_t 3843 mac_link_get(mac_handle_t mh) 3844 { 3845 return (((mac_impl_t *)mh)->mi_linkstate); 3846 } 3847 3848 /* 3849 * Add a mac client specified notification callback. Please see the comments 3850 * above mac_callback_add() for general information about mac callback 3851 * addition/deletion in the presence of mac callback list walkers 3852 */ 3853 mac_notify_handle_t 3854 mac_notify_add(mac_handle_t mh, mac_notify_t notify_fn, void *arg) 3855 { 3856 mac_impl_t *mip = (mac_impl_t *)mh; 3857 mac_notify_cb_t *mncb; 3858 mac_cb_info_t *mcbi; 3859 3860 /* 3861 * Allocate a notify callback structure, fill in the details and 3862 * use the mac callback list manipulation functions to chain into 3863 * the list of callbacks. 3864 */ 3865 mncb = kmem_zalloc(sizeof (mac_notify_cb_t), KM_SLEEP); 3866 mncb->mncb_fn = notify_fn; 3867 mncb->mncb_arg = arg; 3868 mncb->mncb_mip = mip; 3869 mncb->mncb_link.mcb_objp = mncb; 3870 mncb->mncb_link.mcb_objsize = sizeof (mac_notify_cb_t); 3871 mncb->mncb_link.mcb_flags = MCB_NOTIFY_CB_T; 3872 3873 mcbi = &mip->mi_notify_cb_info; 3874 3875 i_mac_perim_enter(mip); 3876 mutex_enter(mcbi->mcbi_lockp); 3877 3878 mac_callback_add(&mip->mi_notify_cb_info, &mip->mi_notify_cb_list, 3879 &mncb->mncb_link); 3880 3881 mutex_exit(mcbi->mcbi_lockp); 3882 i_mac_perim_exit(mip); 3883 return ((mac_notify_handle_t)mncb); 3884 } 3885 3886 void 3887 mac_notify_remove_wait(mac_handle_t mh) 3888 { 3889 mac_impl_t *mip = (mac_impl_t *)mh; 3890 mac_cb_info_t *mcbi = &mip->mi_notify_cb_info; 3891 3892 mutex_enter(mcbi->mcbi_lockp); 3893 mac_callback_remove_wait(&mip->mi_notify_cb_info); 3894 mutex_exit(mcbi->mcbi_lockp); 3895 } 3896 3897 /* 3898 * Remove a mac client specified notification callback 3899 */ 3900 int 3901 mac_notify_remove(mac_notify_handle_t mnh, boolean_t wait) 3902 { 3903 mac_notify_cb_t *mncb = (mac_notify_cb_t *)mnh; 3904 mac_impl_t *mip = mncb->mncb_mip; 3905 mac_cb_info_t *mcbi; 3906 int err = 0; 3907 3908 mcbi = &mip->mi_notify_cb_info; 3909 3910 i_mac_perim_enter(mip); 3911 mutex_enter(mcbi->mcbi_lockp); 3912 3913 ASSERT(mncb->mncb_link.mcb_objp == mncb); 3914 /* 3915 * If there aren't any list walkers, the remove would succeed 3916 * inline, else we wait for the deferred remove to complete 3917 */ 3918 if (mac_callback_remove(&mip->mi_notify_cb_info, 3919 &mip->mi_notify_cb_list, &mncb->mncb_link)) { 3920 kmem_free(mncb, sizeof (mac_notify_cb_t)); 3921 } else { 3922 err = EBUSY; 3923 } 3924 3925 mutex_exit(mcbi->mcbi_lockp); 3926 i_mac_perim_exit(mip); 3927 3928 /* 3929 * If we failed to remove the notification callback and "wait" is set 3930 * to be B_TRUE, wait for the callback to finish after we exit the 3931 * mac perimeter. 3932 */ 3933 if (err != 0 && wait) { 3934 mac_notify_remove_wait((mac_handle_t)mip); 3935 return (0); 3936 } 3937 3938 return (err); 3939 } 3940 3941 /* 3942 * Associate resource management callbacks with the specified MAC 3943 * clients. 3944 */ 3945 void 3946 mac_resource_set(mac_client_handle_t mch, mac_resource_cb_t *rcbs, 3947 boolean_t is_v6) 3948 { 3949 mac_client_impl_t *mcip = (mac_client_impl_t *)mch; 3950 3951 if (is_v6) { 3952 mcip->mci_rcb6 = *rcbs; 3953 } else { 3954 mcip->mci_rcb4 = *rcbs; 3955 } 3956 } 3957 3958 void 3959 mac_resource_clear(mac_client_handle_t mch, boolean_t is_v6) 3960 { 3961 mac_client_impl_t *mcip = (mac_client_impl_t *)mch; 3962 3963 if (is_v6) { 3964 bzero(&mcip->mci_rcb6, sizeof (mcip->mci_rcb6)); 3965 } else { 3966 bzero(&mcip->mci_rcb4, sizeof (mcip->mci_rcb4)); 3967 } 3968 } 3969 3970 /* 3971 * Sets up the client resources and enable the polling interface over all the 3972 * SRS's and the soft rings of the client 3973 */ 3974 void 3975 mac_client_poll_enable(mac_client_handle_t mch, boolean_t is_v6) 3976 { 3977 mac_client_impl_t *mcip = (mac_client_impl_t *)mch; 3978 mac_soft_ring_set_t *mac_srs; 3979 flow_entry_t *flent; 3980 int i; 3981 3982 flent = mcip->mci_flent; 3983 ASSERT(flent != NULL); 3984 3985 mcip->mci_state_flags |= MCIS_CLIENT_POLL_CAPABLE; 3986 for (i = 0; i < flent->fe_rx_srs_cnt; i++) { 3987 mac_srs = (mac_soft_ring_set_t *)flent->fe_rx_srs[i]; 3988 ASSERT(mac_srs->srs_mcip == mcip); 3989 mac_srs_client_poll_enable(mcip, mac_srs, is_v6); 3990 } 3991 } 3992 3993 /* 3994 * Tears down the client resources and disable the polling interface over all 3995 * the SRS's and the soft rings of the client 3996 */ 3997 void 3998 mac_client_poll_disable(mac_client_handle_t mch, boolean_t is_v6) 3999 { 4000 mac_client_impl_t *mcip = (mac_client_impl_t *)mch; 4001 mac_soft_ring_set_t *mac_srs; 4002 flow_entry_t *flent; 4003 int i; 4004 4005 flent = mcip->mci_flent; 4006 ASSERT(flent != NULL); 4007 4008 mcip->mci_state_flags &= ~MCIS_CLIENT_POLL_CAPABLE; 4009 for (i = 0; i < flent->fe_rx_srs_cnt; i++) { 4010 mac_srs = (mac_soft_ring_set_t *)flent->fe_rx_srs[i]; 4011 ASSERT(mac_srs->srs_mcip == mcip); 4012 mac_srs_client_poll_disable(mcip, mac_srs, is_v6); 4013 } 4014 } 4015 4016 /* 4017 * Associate the CPUs specified by the given property with a MAC client. 4018 */ 4019 int 4020 mac_cpu_set(mac_client_handle_t mch, mac_resource_props_t *mrp) 4021 { 4022 mac_client_impl_t *mcip = (mac_client_impl_t *)mch; 4023 mac_impl_t *mip = mcip->mci_mip; 4024 int err = 0; 4025 4026 ASSERT(MAC_PERIM_HELD((mac_handle_t)mip)); 4027 4028 if ((err = mac_validate_props(mcip->mci_state_flags & MCIS_IS_VNIC ? 4029 mcip->mci_upper_mip : mip, mrp)) != 0) { 4030 return (err); 4031 } 4032 if (MCIP_DATAPATH_SETUP(mcip)) 4033 mac_flow_modify(mip->mi_flow_tab, mcip->mci_flent, mrp); 4034 4035 mac_update_resources(mrp, MCIP_RESOURCE_PROPS(mcip), B_FALSE); 4036 return (0); 4037 } 4038 4039 /* 4040 * Apply the specified properties to the specified MAC client. 4041 */ 4042 int 4043 mac_client_set_resources(mac_client_handle_t mch, mac_resource_props_t *mrp) 4044 { 4045 mac_client_impl_t *mcip = (mac_client_impl_t *)mch; 4046 mac_impl_t *mip = mcip->mci_mip; 4047 int err = 0; 4048 4049 i_mac_perim_enter(mip); 4050 4051 if ((mrp->mrp_mask & MRP_MAXBW) || (mrp->mrp_mask & MRP_PRIORITY)) { 4052 err = mac_resource_ctl_set(mch, mrp); 4053 if (err != 0) 4054 goto done; 4055 } 4056 4057 if (mrp->mrp_mask & (MRP_CPUS|MRP_POOL)) { 4058 err = mac_cpu_set(mch, mrp); 4059 if (err != 0) 4060 goto done; 4061 } 4062 4063 if (mrp->mrp_mask & MRP_PROTECT) { 4064 err = mac_protect_set(mch, mrp); 4065 if (err != 0) 4066 goto done; 4067 } 4068 4069 if ((mrp->mrp_mask & MRP_RX_RINGS) || (mrp->mrp_mask & MRP_TX_RINGS)) 4070 err = mac_resource_ctl_set(mch, mrp); 4071 4072 done: 4073 i_mac_perim_exit(mip); 4074 return (err); 4075 } 4076 4077 /* 4078 * Return the properties currently associated with the specified MAC client. 4079 */ 4080 void 4081 mac_client_get_resources(mac_client_handle_t mch, mac_resource_props_t *mrp) 4082 { 4083 mac_client_impl_t *mcip = (mac_client_impl_t *)mch; 4084 mac_resource_props_t *mcip_mrp = MCIP_RESOURCE_PROPS(mcip); 4085 4086 bcopy(mcip_mrp, mrp, sizeof (mac_resource_props_t)); 4087 } 4088 4089 /* 4090 * Return the effective properties currently associated with the specified 4091 * MAC client. 4092 */ 4093 void 4094 mac_client_get_effective_resources(mac_client_handle_t mch, 4095 mac_resource_props_t *mrp) 4096 { 4097 mac_client_impl_t *mcip = (mac_client_impl_t *)mch; 4098 mac_resource_props_t *mcip_mrp = MCIP_EFFECTIVE_PROPS(mcip); 4099 4100 bcopy(mcip_mrp, mrp, sizeof (mac_resource_props_t)); 4101 } 4102 4103 /* 4104 * Pass a copy of the specified packet to the promiscuous callbacks 4105 * of the specified MAC. 4106 * 4107 * If sender is NULL, the function is being invoked for a packet chain 4108 * received from the wire. If sender is non-NULL, it points to 4109 * the MAC client from which the packet is being sent. 4110 * 4111 * The packets are distributed to the promiscuous callbacks as follows: 4112 * 4113 * - all packets are sent to the MAC_CLIENT_PROMISC_ALL callbacks 4114 * - all broadcast and multicast packets are sent to the 4115 * MAC_CLIENT_PROMISC_FILTER and MAC_CLIENT_PROMISC_MULTI. 4116 * 4117 * The unicast packets of MAC_CLIENT_PROMISC_FILTER callbacks are dispatched 4118 * after classification by mac_rx_deliver(). 4119 */ 4120 static void 4121 mac_promisc_dispatch_one(mac_promisc_impl_t *mpip, mblk_t *mp, 4122 boolean_t loopback, boolean_t local) 4123 { 4124 mblk_t *mp_next; 4125 4126 if (!mpip->mpi_no_copy || mpip->mpi_strip_vlan_tag) { 4127 mblk_t *mp_copy; 4128 4129 mp_copy = copymsg(mp); 4130 if (mp_copy == NULL) 4131 return; 4132 4133 if (mpip->mpi_strip_vlan_tag) { 4134 mp_copy = mac_strip_vlan_tag_chain(mp_copy); 4135 if (mp_copy == NULL) 4136 return; 4137 } 4138 4139 /* 4140 * There is code upstack that can't deal with message 4141 * chains. 4142 */ 4143 for (mblk_t *tmp = mp_copy; tmp != NULL; tmp = mp_next) { 4144 mp_next = tmp->b_next; 4145 tmp->b_next = NULL; 4146 mpip->mpi_fn(mpip->mpi_arg, NULL, tmp, loopback); 4147 } 4148 4149 return; 4150 } 4151 4152 mp_next = mp->b_next; 4153 mp->b_next = NULL; 4154 mpip->mpi_fn(mpip->mpi_arg, NULL, mp, loopback); 4155 mp->b_next = mp_next; 4156 } 4157 4158 /* 4159 * Return the VID of a packet. Zero if the packet is not tagged. 4160 */ 4161 static uint16_t 4162 mac_ether_vid(mblk_t *mp) 4163 { 4164 struct ether_header *eth = (struct ether_header *)mp->b_rptr; 4165 4166 if (ntohs(eth->ether_type) == ETHERTYPE_VLAN) { 4167 struct ether_vlan_header *t_evhp = 4168 (struct ether_vlan_header *)mp->b_rptr; 4169 return (VLAN_ID(ntohs(t_evhp->ether_tci))); 4170 } 4171 4172 return (0); 4173 } 4174 4175 /* 4176 * Return whether the specified packet contains a multicast or broadcast 4177 * destination MAC address. 4178 */ 4179 static boolean_t 4180 mac_is_mcast(mac_impl_t *mip, mblk_t *mp) 4181 { 4182 mac_header_info_t hdr_info; 4183 4184 if (mac_header_info((mac_handle_t)mip, mp, &hdr_info) != 0) 4185 return (B_FALSE); 4186 return ((hdr_info.mhi_dsttype == MAC_ADDRTYPE_BROADCAST) || 4187 (hdr_info.mhi_dsttype == MAC_ADDRTYPE_MULTICAST)); 4188 } 4189 4190 /* 4191 * Send a copy of an mblk chain to the MAC clients of the specified MAC. 4192 * "sender" points to the sender MAC client for outbound packets, and 4193 * is set to NULL for inbound packets. 4194 */ 4195 void 4196 mac_promisc_dispatch(mac_impl_t *mip, mblk_t *mp_chain, 4197 mac_client_impl_t *sender, boolean_t local) 4198 { 4199 mac_promisc_impl_t *mpip; 4200 mac_cb_t *mcb; 4201 mblk_t *mp; 4202 boolean_t is_mcast, is_sender; 4203 4204 MAC_PROMISC_WALKER_INC(mip); 4205 for (mp = mp_chain; mp != NULL; mp = mp->b_next) { 4206 is_mcast = mac_is_mcast(mip, mp); 4207 /* send packet to interested callbacks */ 4208 for (mcb = mip->mi_promisc_list; mcb != NULL; 4209 mcb = mcb->mcb_nextp) { 4210 mpip = (mac_promisc_impl_t *)mcb->mcb_objp; 4211 is_sender = (mpip->mpi_mcip == sender); 4212 4213 if (sender != NULL && mpip->mpi_rx_only) 4214 /* 4215 * This client doesn't want outbound packets. 4216 */ 4217 continue; 4218 4219 if (sender == NULL && mpip->mpi_tx_only) 4220 /* 4221 * This client doesn't want inbound packets. 4222 */ 4223 continue; 4224 4225 if (is_sender && mpip->mpi_no_tx_loop) 4226 /* 4227 * The sender doesn't want to receive 4228 * copies of the packets it sends. 4229 */ 4230 continue; 4231 4232 /* this client doesn't need any packets (bridge) */ 4233 if (mpip->mpi_fn == NULL) 4234 continue; 4235 4236 /* 4237 * For an ethernet MAC, don't displatch a multicast 4238 * packet to a non-PROMISC_ALL callbacks unless the VID 4239 * of the packet matches the VID of the client. 4240 */ 4241 if (is_mcast && 4242 mpip->mpi_type != MAC_CLIENT_PROMISC_ALL && 4243 !mac_client_check_flow_vid(mpip->mpi_mcip, 4244 mac_ether_vid(mp))) 4245 continue; 4246 4247 if (is_sender || 4248 mpip->mpi_type == MAC_CLIENT_PROMISC_ALL || 4249 is_mcast) { 4250 mac_promisc_dispatch_one(mpip, mp, is_sender, 4251 local); 4252 } 4253 } 4254 } 4255 MAC_PROMISC_WALKER_DCR(mip); 4256 } 4257 4258 void 4259 mac_promisc_client_dispatch(mac_client_impl_t *mcip, mblk_t *mp_chain) 4260 { 4261 mac_impl_t *mip = mcip->mci_mip; 4262 mac_promisc_impl_t *mpip; 4263 boolean_t is_mcast; 4264 mblk_t *mp; 4265 mac_cb_t *mcb; 4266 4267 /* 4268 * The unicast packets for the MAC client still 4269 * need to be delivered to the MAC_CLIENT_PROMISC_FILTERED 4270 * promiscuous callbacks. The broadcast and multicast 4271 * packets were delivered from mac_rx(). 4272 */ 4273 MAC_PROMISC_WALKER_INC(mip); 4274 for (mp = mp_chain; mp != NULL; mp = mp->b_next) { 4275 is_mcast = mac_is_mcast(mip, mp); 4276 for (mcb = mcip->mci_promisc_list; mcb != NULL; 4277 mcb = mcb->mcb_nextp) { 4278 mpip = (mac_promisc_impl_t *)mcb->mcb_objp; 4279 if (!mpip->mpi_tx_only && 4280 mpip->mpi_type == MAC_CLIENT_PROMISC_FILTERED && 4281 !is_mcast) { 4282 mac_promisc_dispatch_one(mpip, mp, B_FALSE, 4283 B_FALSE); 4284 } 4285 } 4286 } 4287 MAC_PROMISC_WALKER_DCR(mip); 4288 } 4289 4290 /* 4291 * Return the margin value currently assigned to the specified MAC instance. 4292 */ 4293 void 4294 mac_margin_get(mac_handle_t mh, uint32_t *marginp) 4295 { 4296 mac_impl_t *mip = (mac_impl_t *)mh; 4297 4298 rw_enter(&(mip->mi_rw_lock), RW_READER); 4299 *marginp = mip->mi_margin; 4300 rw_exit(&(mip->mi_rw_lock)); 4301 } 4302 4303 /* 4304 * mac_info_get() is used for retrieving the mac_info when a DL_INFO_REQ is 4305 * issued before a DL_ATTACH_REQ. we walk the i_mac_impl_hash table and find 4306 * the first mac_impl_t with a matching driver name; then we copy its mac_info_t 4307 * to the caller. we do all this with i_mac_impl_lock held so the mac_impl_t 4308 * cannot disappear while we are accessing it. 4309 */ 4310 typedef struct i_mac_info_state_s { 4311 const char *mi_name; 4312 mac_info_t *mi_infop; 4313 } i_mac_info_state_t; 4314 4315 /*ARGSUSED*/ 4316 static uint_t 4317 i_mac_info_walker(mod_hash_key_t key, mod_hash_val_t *val, void *arg) 4318 { 4319 i_mac_info_state_t *statep = arg; 4320 mac_impl_t *mip = (mac_impl_t *)val; 4321 4322 if (mip->mi_state_flags & MIS_DISABLED) 4323 return (MH_WALK_CONTINUE); 4324 4325 if (strcmp(statep->mi_name, 4326 ddi_driver_name(mip->mi_dip)) != 0) 4327 return (MH_WALK_CONTINUE); 4328 4329 statep->mi_infop = &mip->mi_info; 4330 return (MH_WALK_TERMINATE); 4331 } 4332 4333 boolean_t 4334 mac_info_get(const char *name, mac_info_t *minfop) 4335 { 4336 i_mac_info_state_t state; 4337 4338 rw_enter(&i_mac_impl_lock, RW_READER); 4339 state.mi_name = name; 4340 state.mi_infop = NULL; 4341 mod_hash_walk(i_mac_impl_hash, i_mac_info_walker, &state); 4342 if (state.mi_infop == NULL) { 4343 rw_exit(&i_mac_impl_lock); 4344 return (B_FALSE); 4345 } 4346 *minfop = *state.mi_infop; 4347 rw_exit(&i_mac_impl_lock); 4348 return (B_TRUE); 4349 } 4350 4351 /* 4352 * To get the capabilities that MAC layer cares about, such as rings, factory 4353 * mac address, vnic or not, it should directly invoke this function. If the 4354 * link is part of a bridge, then the only "capability" it has is the inability 4355 * to do zero copy. 4356 */ 4357 boolean_t 4358 i_mac_capab_get(mac_handle_t mh, mac_capab_t cap, void *cap_data) 4359 { 4360 mac_impl_t *mip = (mac_impl_t *)mh; 4361 4362 if (mip->mi_bridge_link != NULL) { 4363 return (cap == MAC_CAPAB_NO_ZCOPY); 4364 } else if (mip->mi_callbacks->mc_callbacks & MC_GETCAPAB) { 4365 return (mip->mi_getcapab(mip->mi_driver, cap, cap_data)); 4366 } else { 4367 return (B_FALSE); 4368 } 4369 } 4370 4371 /* 4372 * Capability query function. If number of active mac clients is greater than 4373 * 1, only limited capabilities can be advertised to the caller no matter the 4374 * driver has certain capability or not. Else, we query the driver to get the 4375 * capability. 4376 */ 4377 boolean_t 4378 mac_capab_get(mac_handle_t mh, mac_capab_t cap, void *cap_data) 4379 { 4380 mac_impl_t *mip = (mac_impl_t *)mh; 4381 4382 /* 4383 * Some capabilities are restricted when there are more than one active 4384 * clients on the MAC resource. The ones noted below are safe, 4385 * independent of that count. 4386 */ 4387 if (mip->mi_nactiveclients > 1) { 4388 switch (cap) { 4389 case MAC_CAPAB_NO_ZCOPY: 4390 return (B_TRUE); 4391 case MAC_CAPAB_LEGACY: 4392 case MAC_CAPAB_HCKSUM: 4393 case MAC_CAPAB_LSO: 4394 case MAC_CAPAB_NO_NATIVEVLAN: 4395 break; 4396 default: 4397 return (B_FALSE); 4398 } 4399 } 4400 4401 /* else get capab from driver */ 4402 return (i_mac_capab_get(mh, cap, cap_data)); 4403 } 4404 4405 boolean_t 4406 mac_sap_verify(mac_handle_t mh, uint32_t sap, uint32_t *bind_sap) 4407 { 4408 mac_impl_t *mip = (mac_impl_t *)mh; 4409 4410 return (mip->mi_type->mt_ops.mtops_sap_verify(sap, bind_sap, 4411 mip->mi_pdata)); 4412 } 4413 4414 mblk_t * 4415 mac_header(mac_handle_t mh, const uint8_t *daddr, uint32_t sap, mblk_t *payload, 4416 size_t extra_len) 4417 { 4418 mac_impl_t *mip = (mac_impl_t *)mh; 4419 const uint8_t *hdr_daddr; 4420 4421 /* 4422 * If the MAC is point-to-point with a fixed destination address, then 4423 * we must always use that destination in the MAC header. 4424 */ 4425 hdr_daddr = (mip->mi_dstaddr_set ? mip->mi_dstaddr : daddr); 4426 return (mip->mi_type->mt_ops.mtops_header(mip->mi_addr, hdr_daddr, sap, 4427 mip->mi_pdata, payload, extra_len)); 4428 } 4429 4430 int 4431 mac_header_info(mac_handle_t mh, mblk_t *mp, mac_header_info_t *mhip) 4432 { 4433 mac_impl_t *mip = (mac_impl_t *)mh; 4434 4435 return (mip->mi_type->mt_ops.mtops_header_info(mp, mip->mi_pdata, 4436 mhip)); 4437 } 4438 4439 int 4440 mac_vlan_header_info(mac_handle_t mh, mblk_t *mp, mac_header_info_t *mhip) 4441 { 4442 mac_impl_t *mip = (mac_impl_t *)mh; 4443 boolean_t is_ethernet = (mip->mi_info.mi_media == DL_ETHER); 4444 int err = 0; 4445 4446 /* 4447 * Packets should always be at least 16 bit aligned. 4448 */ 4449 ASSERT(IS_P2ALIGNED(mp->b_rptr, sizeof (uint16_t))); 4450 4451 if ((err = mac_header_info(mh, mp, mhip)) != 0) 4452 return (err); 4453 4454 /* 4455 * If this is a VLAN-tagged Ethernet packet, then the SAP in the 4456 * mac_header_info_t as returned by mac_header_info() is 4457 * ETHERTYPE_VLAN. We need to grab the ethertype from the VLAN header. 4458 */ 4459 if (is_ethernet && (mhip->mhi_bindsap == ETHERTYPE_VLAN)) { 4460 struct ether_vlan_header *evhp; 4461 uint16_t sap; 4462 mblk_t *tmp = NULL; 4463 size_t size; 4464 4465 size = sizeof (struct ether_vlan_header); 4466 if (MBLKL(mp) < size) { 4467 /* 4468 * Pullup the message in order to get the MAC header 4469 * infomation. Note that this is a read-only function, 4470 * we keep the input packet intact. 4471 */ 4472 if ((tmp = msgpullup(mp, size)) == NULL) 4473 return (EINVAL); 4474 4475 mp = tmp; 4476 } 4477 evhp = (struct ether_vlan_header *)mp->b_rptr; 4478 sap = ntohs(evhp->ether_type); 4479 (void) mac_sap_verify(mh, sap, &mhip->mhi_bindsap); 4480 mhip->mhi_hdrsize = sizeof (struct ether_vlan_header); 4481 mhip->mhi_tci = ntohs(evhp->ether_tci); 4482 mhip->mhi_istagged = B_TRUE; 4483 freemsg(tmp); 4484 4485 if (VLAN_CFI(mhip->mhi_tci) != ETHER_CFI) 4486 return (EINVAL); 4487 } else { 4488 mhip->mhi_istagged = B_FALSE; 4489 mhip->mhi_tci = 0; 4490 } 4491 4492 return (0); 4493 } 4494 4495 mblk_t * 4496 mac_header_cook(mac_handle_t mh, mblk_t *mp) 4497 { 4498 mac_impl_t *mip = (mac_impl_t *)mh; 4499 4500 if (mip->mi_type->mt_ops.mtops_ops & MTOPS_HEADER_COOK) { 4501 if (DB_REF(mp) > 1) { 4502 mblk_t *newmp = copymsg(mp); 4503 if (newmp == NULL) 4504 return (NULL); 4505 freemsg(mp); 4506 mp = newmp; 4507 } 4508 return (mip->mi_type->mt_ops.mtops_header_cook(mp, 4509 mip->mi_pdata)); 4510 } 4511 return (mp); 4512 } 4513 4514 mblk_t * 4515 mac_header_uncook(mac_handle_t mh, mblk_t *mp) 4516 { 4517 mac_impl_t *mip = (mac_impl_t *)mh; 4518 4519 if (mip->mi_type->mt_ops.mtops_ops & MTOPS_HEADER_UNCOOK) { 4520 if (DB_REF(mp) > 1) { 4521 mblk_t *newmp = copymsg(mp); 4522 if (newmp == NULL) 4523 return (NULL); 4524 freemsg(mp); 4525 mp = newmp; 4526 } 4527 return (mip->mi_type->mt_ops.mtops_header_uncook(mp, 4528 mip->mi_pdata)); 4529 } 4530 return (mp); 4531 } 4532 4533 uint_t 4534 mac_addr_len(mac_handle_t mh) 4535 { 4536 mac_impl_t *mip = (mac_impl_t *)mh; 4537 4538 return (mip->mi_type->mt_addr_length); 4539 } 4540 4541 /* True if a MAC is a VNIC */ 4542 boolean_t 4543 mac_is_vnic(mac_handle_t mh) 4544 { 4545 return ((((mac_impl_t *)mh)->mi_state_flags & MIS_IS_VNIC) != 0); 4546 } 4547 4548 boolean_t 4549 mac_is_overlay(mac_handle_t mh) 4550 { 4551 return ((((mac_impl_t *)mh)->mi_state_flags & MIS_IS_OVERLAY) != 0); 4552 } 4553 4554 mac_handle_t 4555 mac_get_lower_mac_handle(mac_handle_t mh) 4556 { 4557 mac_impl_t *mip = (mac_impl_t *)mh; 4558 4559 ASSERT(mac_is_vnic(mh)); 4560 return (((vnic_t *)mip->mi_driver)->vn_lower_mh); 4561 } 4562 4563 boolean_t 4564 mac_is_vnic_primary(mac_handle_t mh) 4565 { 4566 mac_impl_t *mip = (mac_impl_t *)mh; 4567 4568 ASSERT(mac_is_vnic(mh)); 4569 return (((vnic_t *)mip->mi_driver)->vn_addr_type == 4570 VNIC_MAC_ADDR_TYPE_PRIMARY); 4571 } 4572 4573 void 4574 mac_update_resources(mac_resource_props_t *nmrp, mac_resource_props_t *cmrp, 4575 boolean_t is_user_flow) 4576 { 4577 if (nmrp != NULL && cmrp != NULL) { 4578 if (nmrp->mrp_mask & MRP_PRIORITY) { 4579 if (nmrp->mrp_priority == MPL_RESET) { 4580 cmrp->mrp_mask &= ~MRP_PRIORITY; 4581 if (is_user_flow) { 4582 cmrp->mrp_priority = 4583 MPL_SUBFLOW_DEFAULT; 4584 } else { 4585 cmrp->mrp_priority = MPL_LINK_DEFAULT; 4586 } 4587 } else { 4588 cmrp->mrp_mask |= MRP_PRIORITY; 4589 cmrp->mrp_priority = nmrp->mrp_priority; 4590 } 4591 } 4592 if (nmrp->mrp_mask & MRP_MAXBW) { 4593 if (nmrp->mrp_maxbw == MRP_MAXBW_RESETVAL) { 4594 cmrp->mrp_mask &= ~MRP_MAXBW; 4595 cmrp->mrp_maxbw = 0; 4596 } else { 4597 cmrp->mrp_mask |= MRP_MAXBW; 4598 cmrp->mrp_maxbw = nmrp->mrp_maxbw; 4599 } 4600 } 4601 if (nmrp->mrp_mask & MRP_CPUS) 4602 MAC_COPY_CPUS(nmrp, cmrp); 4603 4604 if (nmrp->mrp_mask & MRP_POOL) { 4605 if (strlen(nmrp->mrp_pool) == 0) { 4606 cmrp->mrp_mask &= ~MRP_POOL; 4607 bzero(cmrp->mrp_pool, sizeof (cmrp->mrp_pool)); 4608 } else { 4609 cmrp->mrp_mask |= MRP_POOL; 4610 (void) strncpy(cmrp->mrp_pool, nmrp->mrp_pool, 4611 sizeof (cmrp->mrp_pool)); 4612 } 4613 4614 } 4615 4616 if (nmrp->mrp_mask & MRP_PROTECT) 4617 mac_protect_update(nmrp, cmrp); 4618 4619 /* 4620 * Update the rings specified. 4621 */ 4622 if (nmrp->mrp_mask & MRP_RX_RINGS) { 4623 if (nmrp->mrp_mask & MRP_RINGS_RESET) { 4624 cmrp->mrp_mask &= ~MRP_RX_RINGS; 4625 if (cmrp->mrp_mask & MRP_RXRINGS_UNSPEC) 4626 cmrp->mrp_mask &= ~MRP_RXRINGS_UNSPEC; 4627 cmrp->mrp_nrxrings = 0; 4628 } else { 4629 cmrp->mrp_mask |= MRP_RX_RINGS; 4630 cmrp->mrp_nrxrings = nmrp->mrp_nrxrings; 4631 } 4632 } 4633 if (nmrp->mrp_mask & MRP_TX_RINGS) { 4634 if (nmrp->mrp_mask & MRP_RINGS_RESET) { 4635 cmrp->mrp_mask &= ~MRP_TX_RINGS; 4636 if (cmrp->mrp_mask & MRP_TXRINGS_UNSPEC) 4637 cmrp->mrp_mask &= ~MRP_TXRINGS_UNSPEC; 4638 cmrp->mrp_ntxrings = 0; 4639 } else { 4640 cmrp->mrp_mask |= MRP_TX_RINGS; 4641 cmrp->mrp_ntxrings = nmrp->mrp_ntxrings; 4642 } 4643 } 4644 if (nmrp->mrp_mask & MRP_RXRINGS_UNSPEC) 4645 cmrp->mrp_mask |= MRP_RXRINGS_UNSPEC; 4646 else if (cmrp->mrp_mask & MRP_RXRINGS_UNSPEC) 4647 cmrp->mrp_mask &= ~MRP_RXRINGS_UNSPEC; 4648 4649 if (nmrp->mrp_mask & MRP_TXRINGS_UNSPEC) 4650 cmrp->mrp_mask |= MRP_TXRINGS_UNSPEC; 4651 else if (cmrp->mrp_mask & MRP_TXRINGS_UNSPEC) 4652 cmrp->mrp_mask &= ~MRP_TXRINGS_UNSPEC; 4653 } 4654 } 4655 4656 /* 4657 * i_mac_set_resources: 4658 * 4659 * This routine associates properties with the primary MAC client of 4660 * the specified MAC instance. 4661 * - Cache the properties in mac_impl_t 4662 * - Apply the properties to the primary MAC client if exists 4663 */ 4664 int 4665 i_mac_set_resources(mac_handle_t mh, mac_resource_props_t *mrp) 4666 { 4667 mac_impl_t *mip = (mac_impl_t *)mh; 4668 mac_client_impl_t *mcip; 4669 int err = 0; 4670 uint32_t resmask, newresmask; 4671 mac_resource_props_t *tmrp, *umrp; 4672 4673 ASSERT(MAC_PERIM_HELD((mac_handle_t)mip)); 4674 4675 err = mac_validate_props(mip, mrp); 4676 if (err != 0) 4677 return (err); 4678 4679 umrp = kmem_zalloc(sizeof (*umrp), KM_SLEEP); 4680 bcopy(&mip->mi_resource_props, umrp, sizeof (*umrp)); 4681 resmask = umrp->mrp_mask; 4682 mac_update_resources(mrp, umrp, B_FALSE); 4683 newresmask = umrp->mrp_mask; 4684 4685 if (resmask == 0 && newresmask != 0) { 4686 /* 4687 * Bandwidth, priority, cpu or pool link properties configured, 4688 * must disable fastpath. 4689 */ 4690 if ((err = mac_fastpath_disable((mac_handle_t)mip)) != 0) { 4691 kmem_free(umrp, sizeof (*umrp)); 4692 return (err); 4693 } 4694 } 4695 4696 /* 4697 * Since bind_cpu may be modified by mac_client_set_resources() 4698 * we use a copy of bind_cpu and finally cache bind_cpu in mip. 4699 * This allows us to cache only user edits in mip. 4700 */ 4701 tmrp = kmem_zalloc(sizeof (*tmrp), KM_SLEEP); 4702 bcopy(mrp, tmrp, sizeof (*tmrp)); 4703 mcip = mac_primary_client_handle(mip); 4704 if (mcip != NULL && (mcip->mci_state_flags & MCIS_IS_AGGR_PORT) == 0) { 4705 err = mac_client_set_resources((mac_client_handle_t)mcip, tmrp); 4706 } else if ((mrp->mrp_mask & MRP_RX_RINGS || 4707 mrp->mrp_mask & MRP_TX_RINGS)) { 4708 mac_client_impl_t *vmcip; 4709 4710 /* 4711 * If the primary is not up, we need to check if there 4712 * are any VLANs on this primary. If there are then 4713 * we need to set this property on the VLANs since 4714 * VLANs follow the primary they are based on. Just 4715 * look for the first VLAN and change its properties, 4716 * all the other VLANs should be in the same group. 4717 */ 4718 for (vmcip = mip->mi_clients_list; vmcip != NULL; 4719 vmcip = vmcip->mci_client_next) { 4720 if ((vmcip->mci_flent->fe_type & FLOW_PRIMARY_MAC) && 4721 mac_client_vid((mac_client_handle_t)vmcip) != 4722 VLAN_ID_NONE) { 4723 break; 4724 } 4725 } 4726 if (vmcip != NULL) { 4727 mac_resource_props_t *omrp; 4728 mac_resource_props_t *vmrp; 4729 4730 omrp = kmem_zalloc(sizeof (*omrp), KM_SLEEP); 4731 bcopy(MCIP_RESOURCE_PROPS(vmcip), omrp, sizeof (*omrp)); 4732 /* 4733 * We dont' call mac_update_resources since we 4734 * want to take only the ring properties and 4735 * not all the properties that may have changed. 4736 */ 4737 vmrp = MCIP_RESOURCE_PROPS(vmcip); 4738 if (mrp->mrp_mask & MRP_RX_RINGS) { 4739 if (mrp->mrp_mask & MRP_RINGS_RESET) { 4740 vmrp->mrp_mask &= ~MRP_RX_RINGS; 4741 if (vmrp->mrp_mask & 4742 MRP_RXRINGS_UNSPEC) { 4743 vmrp->mrp_mask &= 4744 ~MRP_RXRINGS_UNSPEC; 4745 } 4746 vmrp->mrp_nrxrings = 0; 4747 } else { 4748 vmrp->mrp_mask |= MRP_RX_RINGS; 4749 vmrp->mrp_nrxrings = mrp->mrp_nrxrings; 4750 } 4751 } 4752 if (mrp->mrp_mask & MRP_TX_RINGS) { 4753 if (mrp->mrp_mask & MRP_RINGS_RESET) { 4754 vmrp->mrp_mask &= ~MRP_TX_RINGS; 4755 if (vmrp->mrp_mask & 4756 MRP_TXRINGS_UNSPEC) { 4757 vmrp->mrp_mask &= 4758 ~MRP_TXRINGS_UNSPEC; 4759 } 4760 vmrp->mrp_ntxrings = 0; 4761 } else { 4762 vmrp->mrp_mask |= MRP_TX_RINGS; 4763 vmrp->mrp_ntxrings = mrp->mrp_ntxrings; 4764 } 4765 } 4766 if (mrp->mrp_mask & MRP_RXRINGS_UNSPEC) 4767 vmrp->mrp_mask |= MRP_RXRINGS_UNSPEC; 4768 4769 if (mrp->mrp_mask & MRP_TXRINGS_UNSPEC) 4770 vmrp->mrp_mask |= MRP_TXRINGS_UNSPEC; 4771 4772 if ((err = mac_client_set_rings_prop(vmcip, mrp, 4773 omrp)) != 0) { 4774 bcopy(omrp, MCIP_RESOURCE_PROPS(vmcip), 4775 sizeof (*omrp)); 4776 } else { 4777 mac_set_prim_vlan_rings(mip, vmrp); 4778 } 4779 kmem_free(omrp, sizeof (*omrp)); 4780 } 4781 } 4782 4783 /* Only update the values if mac_client_set_resources succeeded */ 4784 if (err == 0) { 4785 bcopy(umrp, &mip->mi_resource_props, sizeof (*umrp)); 4786 /* 4787 * If bandwidth, priority or cpu link properties cleared, 4788 * renable fastpath. 4789 */ 4790 if (resmask != 0 && newresmask == 0) 4791 mac_fastpath_enable((mac_handle_t)mip); 4792 } else if (resmask == 0 && newresmask != 0) { 4793 mac_fastpath_enable((mac_handle_t)mip); 4794 } 4795 kmem_free(tmrp, sizeof (*tmrp)); 4796 kmem_free(umrp, sizeof (*umrp)); 4797 return (err); 4798 } 4799 4800 int 4801 mac_set_resources(mac_handle_t mh, mac_resource_props_t *mrp) 4802 { 4803 int err; 4804 4805 i_mac_perim_enter((mac_impl_t *)mh); 4806 err = i_mac_set_resources(mh, mrp); 4807 i_mac_perim_exit((mac_impl_t *)mh); 4808 return (err); 4809 } 4810 4811 /* 4812 * Get the properties cached for the specified MAC instance. 4813 */ 4814 void 4815 mac_get_resources(mac_handle_t mh, mac_resource_props_t *mrp) 4816 { 4817 mac_impl_t *mip = (mac_impl_t *)mh; 4818 mac_client_impl_t *mcip; 4819 4820 mcip = mac_primary_client_handle(mip); 4821 if (mcip != NULL) { 4822 mac_client_get_resources((mac_client_handle_t)mcip, mrp); 4823 return; 4824 } 4825 bcopy(&mip->mi_resource_props, mrp, sizeof (mac_resource_props_t)); 4826 } 4827 4828 /* 4829 * Get the effective properties from the primary client of the 4830 * specified MAC instance. 4831 */ 4832 void 4833 mac_get_effective_resources(mac_handle_t mh, mac_resource_props_t *mrp) 4834 { 4835 mac_impl_t *mip = (mac_impl_t *)mh; 4836 mac_client_impl_t *mcip; 4837 4838 mcip = mac_primary_client_handle(mip); 4839 if (mcip != NULL) { 4840 mac_client_get_effective_resources((mac_client_handle_t)mcip, 4841 mrp); 4842 return; 4843 } 4844 bzero(mrp, sizeof (mac_resource_props_t)); 4845 } 4846 4847 int 4848 mac_set_pvid(mac_handle_t mh, uint16_t pvid) 4849 { 4850 mac_impl_t *mip = (mac_impl_t *)mh; 4851 mac_client_impl_t *mcip; 4852 mac_unicast_impl_t *muip; 4853 4854 i_mac_perim_enter(mip); 4855 if (pvid != 0) { 4856 for (mcip = mip->mi_clients_list; mcip != NULL; 4857 mcip = mcip->mci_client_next) { 4858 for (muip = mcip->mci_unicast_list; muip != NULL; 4859 muip = muip->mui_next) { 4860 if (muip->mui_vid == pvid) { 4861 i_mac_perim_exit(mip); 4862 return (EBUSY); 4863 } 4864 } 4865 } 4866 } 4867 mip->mi_pvid = pvid; 4868 i_mac_perim_exit(mip); 4869 return (0); 4870 } 4871 4872 uint16_t 4873 mac_get_pvid(mac_handle_t mh) 4874 { 4875 mac_impl_t *mip = (mac_impl_t *)mh; 4876 4877 return (mip->mi_pvid); 4878 } 4879 4880 uint32_t 4881 mac_get_llimit(mac_handle_t mh) 4882 { 4883 mac_impl_t *mip = (mac_impl_t *)mh; 4884 4885 return (mip->mi_llimit); 4886 } 4887 4888 uint32_t 4889 mac_get_ldecay(mac_handle_t mh) 4890 { 4891 mac_impl_t *mip = (mac_impl_t *)mh; 4892 4893 return (mip->mi_ldecay); 4894 } 4895 4896 /* 4897 * Rename a mac client, its flow, and the kstat. 4898 */ 4899 int 4900 mac_rename_primary(mac_handle_t mh, const char *new_name) 4901 { 4902 mac_impl_t *mip = (mac_impl_t *)mh; 4903 mac_client_impl_t *cur_clnt = NULL; 4904 flow_entry_t *fep; 4905 4906 i_mac_perim_enter(mip); 4907 4908 /* 4909 * VNICs: we need to change the sys flow name and 4910 * the associated flow kstat. 4911 */ 4912 if (mip->mi_state_flags & MIS_IS_VNIC) { 4913 mac_client_impl_t *mcip = mac_vnic_lower(mip); 4914 ASSERT(new_name != NULL); 4915 mac_rename_flow_names(mcip, new_name); 4916 mac_stat_rename(mcip); 4917 goto done; 4918 } 4919 /* 4920 * This mac may itself be an aggr link, or it may have some client 4921 * which is an aggr port. For both cases, we need to change the 4922 * aggr port's mac client name, its flow name and the associated flow 4923 * kstat. 4924 */ 4925 if (mip->mi_state_flags & MIS_IS_AGGR) { 4926 mac_capab_aggr_t aggr_cap; 4927 mac_rename_fn_t rename_fn; 4928 boolean_t ret; 4929 4930 ASSERT(new_name != NULL); 4931 ret = i_mac_capab_get((mac_handle_t)mip, MAC_CAPAB_AGGR, 4932 (void *)(&aggr_cap)); 4933 ASSERT(ret == B_TRUE); 4934 rename_fn = aggr_cap.mca_rename_fn; 4935 rename_fn(new_name, mip->mi_driver); 4936 /* 4937 * The aggr's client name and kstat flow name will be 4938 * updated below, i.e. via mac_rename_flow_names. 4939 */ 4940 } 4941 4942 for (cur_clnt = mip->mi_clients_list; cur_clnt != NULL; 4943 cur_clnt = cur_clnt->mci_client_next) { 4944 if (cur_clnt->mci_state_flags & MCIS_IS_AGGR_PORT) { 4945 if (new_name != NULL) { 4946 char *str_st = cur_clnt->mci_name; 4947 char *str_del = strchr(str_st, '-'); 4948 4949 ASSERT(str_del != NULL); 4950 bzero(str_del + 1, MAXNAMELEN - 4951 (str_del - str_st + 1)); 4952 bcopy(new_name, str_del + 1, 4953 strlen(new_name)); 4954 } 4955 fep = cur_clnt->mci_flent; 4956 mac_rename_flow(fep, cur_clnt->mci_name); 4957 break; 4958 } else if (new_name != NULL && 4959 cur_clnt->mci_state_flags & MCIS_USE_DATALINK_NAME) { 4960 mac_rename_flow_names(cur_clnt, new_name); 4961 break; 4962 } 4963 } 4964 4965 /* Recreate kstats associated with aggr pseudo rings */ 4966 if (mip->mi_state_flags & MIS_IS_AGGR) 4967 mac_pseudo_ring_stat_rename(mip); 4968 4969 done: 4970 i_mac_perim_exit(mip); 4971 return (0); 4972 } 4973 4974 /* 4975 * Rename the MAC client's flow names 4976 */ 4977 static void 4978 mac_rename_flow_names(mac_client_impl_t *mcip, const char *new_name) 4979 { 4980 flow_entry_t *flent; 4981 uint16_t vid; 4982 char flowname[MAXFLOWNAMELEN]; 4983 mac_impl_t *mip = mcip->mci_mip; 4984 4985 ASSERT(MAC_PERIM_HELD((mac_handle_t)mip)); 4986 4987 /* 4988 * Use mi_rw_lock to ensure that threads not in the mac perimeter 4989 * see a self-consistent value for mci_name 4990 */ 4991 rw_enter(&mip->mi_rw_lock, RW_WRITER); 4992 (void) strlcpy(mcip->mci_name, new_name, sizeof (mcip->mci_name)); 4993 rw_exit(&mip->mi_rw_lock); 4994 4995 mac_rename_flow(mcip->mci_flent, new_name); 4996 4997 if (mcip->mci_nflents == 1) 4998 return; 4999 5000 /* 5001 * We have to rename all the others too, no stats to destroy for 5002 * these. 5003 */ 5004 for (flent = mcip->mci_flent_list; flent != NULL; 5005 flent = flent->fe_client_next) { 5006 if (flent != mcip->mci_flent) { 5007 vid = i_mac_flow_vid(flent); 5008 (void) sprintf(flowname, "%s%u", new_name, vid); 5009 mac_flow_set_name(flent, flowname); 5010 } 5011 } 5012 } 5013 5014 5015 /* 5016 * Add a flow to the MAC client's flow list - i.e list of MAC/VID tuples 5017 * defined for the specified MAC client. 5018 */ 5019 static void 5020 mac_client_add_to_flow_list(mac_client_impl_t *mcip, flow_entry_t *flent) 5021 { 5022 ASSERT(MAC_PERIM_HELD((mac_handle_t)mcip->mci_mip)); 5023 /* 5024 * The promisc Rx data path walks the mci_flent_list. Protect by 5025 * using mi_rw_lock 5026 */ 5027 rw_enter(&mcip->mci_rw_lock, RW_WRITER); 5028 5029 mcip->mci_vidcache = MCIP_VIDCACHE_INVALID; 5030 5031 /* Add it to the head */ 5032 flent->fe_client_next = mcip->mci_flent_list; 5033 mcip->mci_flent_list = flent; 5034 mcip->mci_nflents++; 5035 5036 /* 5037 * Keep track of the number of non-zero VIDs addresses per MAC 5038 * client to avoid figuring it out in the data-path. 5039 */ 5040 if (i_mac_flow_vid(flent) != VLAN_ID_NONE) 5041 mcip->mci_nvids++; 5042 5043 rw_exit(&mcip->mci_rw_lock); 5044 } 5045 5046 /* 5047 * Remove a flow entry from the MAC client's list. 5048 */ 5049 static void 5050 mac_client_remove_flow_from_list(mac_client_impl_t *mcip, flow_entry_t *flent) 5051 { 5052 flow_entry_t *fe = mcip->mci_flent_list; 5053 flow_entry_t *prev_fe = NULL; 5054 5055 ASSERT(MAC_PERIM_HELD((mac_handle_t)mcip->mci_mip)); 5056 /* 5057 * The promisc Rx data path walks the mci_flent_list. Protect by 5058 * using mci_rw_lock 5059 */ 5060 rw_enter(&mcip->mci_rw_lock, RW_WRITER); 5061 mcip->mci_vidcache = MCIP_VIDCACHE_INVALID; 5062 5063 while ((fe != NULL) && (fe != flent)) { 5064 prev_fe = fe; 5065 fe = fe->fe_client_next; 5066 } 5067 5068 ASSERT(fe != NULL); 5069 if (prev_fe == NULL) { 5070 /* Deleting the first node */ 5071 mcip->mci_flent_list = fe->fe_client_next; 5072 } else { 5073 prev_fe->fe_client_next = fe->fe_client_next; 5074 } 5075 mcip->mci_nflents--; 5076 5077 if (i_mac_flow_vid(flent) != VLAN_ID_NONE) 5078 mcip->mci_nvids--; 5079 5080 rw_exit(&mcip->mci_rw_lock); 5081 } 5082 5083 /* 5084 * Check if the given VID belongs to this MAC client. 5085 */ 5086 boolean_t 5087 mac_client_check_flow_vid(mac_client_impl_t *mcip, uint16_t vid) 5088 { 5089 flow_entry_t *flent; 5090 uint16_t mci_vid; 5091 uint32_t cache = mcip->mci_vidcache; 5092 5093 /* 5094 * In hopes of not having to touch the mci_rw_lock, check to see if 5095 * this vid matches our cached result. 5096 */ 5097 if (MCIP_VIDCACHE_ISVALID(cache) && MCIP_VIDCACHE_VID(cache) == vid) 5098 return (MCIP_VIDCACHE_BOOL(cache) ? B_TRUE : B_FALSE); 5099 5100 /* The mci_flent_list is protected by mci_rw_lock */ 5101 rw_enter(&mcip->mci_rw_lock, RW_WRITER); 5102 for (flent = mcip->mci_flent_list; flent != NULL; 5103 flent = flent->fe_client_next) { 5104 mci_vid = i_mac_flow_vid(flent); 5105 if (vid == mci_vid) { 5106 mcip->mci_vidcache = MCIP_VIDCACHE_CACHE(vid, B_TRUE); 5107 rw_exit(&mcip->mci_rw_lock); 5108 return (B_TRUE); 5109 } 5110 } 5111 5112 mcip->mci_vidcache = MCIP_VIDCACHE_CACHE(vid, B_FALSE); 5113 rw_exit(&mcip->mci_rw_lock); 5114 return (B_FALSE); 5115 } 5116 5117 /* 5118 * Get the flow entry for the specified <MAC addr, VID> tuple. 5119 */ 5120 static flow_entry_t * 5121 mac_client_get_flow(mac_client_impl_t *mcip, mac_unicast_impl_t *muip) 5122 { 5123 mac_address_t *map = mcip->mci_unicast; 5124 flow_entry_t *flent; 5125 uint16_t vid; 5126 flow_desc_t flow_desc; 5127 5128 ASSERT(MAC_PERIM_HELD((mac_handle_t)mcip->mci_mip)); 5129 5130 mac_flow_get_desc(mcip->mci_flent, &flow_desc); 5131 if (bcmp(flow_desc.fd_dst_mac, map->ma_addr, map->ma_len) != 0) 5132 return (NULL); 5133 5134 for (flent = mcip->mci_flent_list; flent != NULL; 5135 flent = flent->fe_client_next) { 5136 vid = i_mac_flow_vid(flent); 5137 if (vid == muip->mui_vid) { 5138 return (flent); 5139 } 5140 } 5141 5142 return (NULL); 5143 } 5144 5145 /* 5146 * Since mci_flent has the SRSs, when we want to remove it, we replace 5147 * the flow_desc_t in mci_flent with that of an existing flent and then 5148 * remove that flent instead of mci_flent. 5149 */ 5150 static flow_entry_t * 5151 mac_client_swap_mciflent(mac_client_impl_t *mcip) 5152 { 5153 flow_entry_t *flent = mcip->mci_flent; 5154 flow_tab_t *ft = flent->fe_flow_tab; 5155 flow_entry_t *flent1; 5156 flow_desc_t fl_desc; 5157 char fl_name[MAXFLOWNAMELEN]; 5158 int err; 5159 5160 ASSERT(MAC_PERIM_HELD((mac_handle_t)mcip->mci_mip)); 5161 ASSERT(mcip->mci_nflents > 1); 5162 5163 /* get the next flent following the primary flent */ 5164 flent1 = mcip->mci_flent_list->fe_client_next; 5165 ASSERT(flent1 != NULL && flent1->fe_flow_tab == ft); 5166 5167 /* 5168 * Remove the flent from the flow table before updating the 5169 * flow descriptor as the hash depends on the flow descriptor. 5170 * This also helps incoming packet classification avoid having 5171 * to grab fe_lock. Access to fe_flow_desc of a flent not in the 5172 * flow table is done under the fe_lock so that log or stat functions 5173 * see a self-consistent fe_flow_desc. The name and desc are specific 5174 * to a flow, the rest are shared by all the clients, including 5175 * resource control etc. 5176 */ 5177 mac_flow_remove(ft, flent, B_TRUE); 5178 mac_flow_remove(ft, flent1, B_TRUE); 5179 5180 bcopy(&flent->fe_flow_desc, &fl_desc, sizeof (flow_desc_t)); 5181 bcopy(flent->fe_flow_name, fl_name, MAXFLOWNAMELEN); 5182 5183 /* update the primary flow entry */ 5184 mutex_enter(&flent->fe_lock); 5185 bcopy(&flent1->fe_flow_desc, &flent->fe_flow_desc, 5186 sizeof (flow_desc_t)); 5187 bcopy(&flent1->fe_flow_name, &flent->fe_flow_name, MAXFLOWNAMELEN); 5188 mutex_exit(&flent->fe_lock); 5189 5190 /* update the flow entry that is to be freed */ 5191 mutex_enter(&flent1->fe_lock); 5192 bcopy(&fl_desc, &flent1->fe_flow_desc, sizeof (flow_desc_t)); 5193 bcopy(fl_name, &flent1->fe_flow_name, MAXFLOWNAMELEN); 5194 mutex_exit(&flent1->fe_lock); 5195 5196 /* now reinsert the flow entries in the table */ 5197 err = mac_flow_add(ft, flent); 5198 ASSERT(err == 0); 5199 5200 err = mac_flow_add(ft, flent1); 5201 ASSERT(err == 0); 5202 5203 return (flent1); 5204 } 5205 5206 /* 5207 * Return whether there is only one flow entry associated with this 5208 * MAC client. 5209 */ 5210 static boolean_t 5211 mac_client_single_rcvr(mac_client_impl_t *mcip) 5212 { 5213 return (mcip->mci_nflents == 1); 5214 } 5215 5216 int 5217 mac_validate_props(mac_impl_t *mip, mac_resource_props_t *mrp) 5218 { 5219 boolean_t reset; 5220 uint32_t rings_needed; 5221 uint32_t rings_avail; 5222 mac_group_type_t gtype; 5223 mac_resource_props_t *mip_mrp; 5224 5225 if (mrp == NULL) 5226 return (0); 5227 5228 if (mrp->mrp_mask & MRP_PRIORITY) { 5229 mac_priority_level_t pri = mrp->mrp_priority; 5230 5231 if (pri < MPL_LOW || pri > MPL_RESET) 5232 return (EINVAL); 5233 } 5234 5235 if (mrp->mrp_mask & MRP_MAXBW) { 5236 uint64_t maxbw = mrp->mrp_maxbw; 5237 5238 if (maxbw < MRP_MAXBW_MINVAL && maxbw != 0) 5239 return (EINVAL); 5240 } 5241 if (mrp->mrp_mask & MRP_CPUS) { 5242 int i, j; 5243 mac_cpu_mode_t fanout; 5244 5245 if (mrp->mrp_ncpus > ncpus) 5246 return (EINVAL); 5247 5248 for (i = 0; i < mrp->mrp_ncpus; i++) { 5249 for (j = 0; j < mrp->mrp_ncpus; j++) { 5250 if (i != j && 5251 mrp->mrp_cpu[i] == mrp->mrp_cpu[j]) { 5252 return (EINVAL); 5253 } 5254 } 5255 } 5256 5257 for (i = 0; i < mrp->mrp_ncpus; i++) { 5258 cpu_t *cp; 5259 int rv; 5260 5261 mutex_enter(&cpu_lock); 5262 cp = cpu_get(mrp->mrp_cpu[i]); 5263 if (cp != NULL) 5264 rv = cpu_is_online(cp); 5265 else 5266 rv = 0; 5267 mutex_exit(&cpu_lock); 5268 if (rv == 0) 5269 return (EINVAL); 5270 } 5271 5272 fanout = mrp->mrp_fanout_mode; 5273 if (fanout < 0 || fanout > MCM_CPUS) 5274 return (EINVAL); 5275 } 5276 5277 if (mrp->mrp_mask & MRP_PROTECT) { 5278 int err = mac_protect_validate(mrp); 5279 if (err != 0) 5280 return (err); 5281 } 5282 5283 if (!(mrp->mrp_mask & MRP_RX_RINGS) && 5284 !(mrp->mrp_mask & MRP_TX_RINGS)) { 5285 return (0); 5286 } 5287 5288 /* 5289 * mip will be null when we come from mac_flow_create or 5290 * mac_link_flow_modify. In the latter case it is a user flow, 5291 * for which we don't support rings. In the former we would 5292 * have validated the props beforehand (i_mac_unicast_add -> 5293 * mac_client_set_resources -> validate for the primary and 5294 * vnic_dev_create -> mac_client_set_resources -> validate for 5295 * a vnic. 5296 */ 5297 if (mip == NULL) 5298 return (0); 5299 5300 /* 5301 * We don't support setting rings property for a VNIC that is using a 5302 * primary address (VLAN) 5303 */ 5304 if ((mip->mi_state_flags & MIS_IS_VNIC) && 5305 mac_is_vnic_primary((mac_handle_t)mip)) { 5306 return (ENOTSUP); 5307 } 5308 5309 mip_mrp = &mip->mi_resource_props; 5310 /* 5311 * The rings property should be validated against the NICs 5312 * resources 5313 */ 5314 if (mip->mi_state_flags & MIS_IS_VNIC) 5315 mip = (mac_impl_t *)mac_get_lower_mac_handle((mac_handle_t)mip); 5316 5317 reset = mrp->mrp_mask & MRP_RINGS_RESET; 5318 /* 5319 * If groups are not supported, return error. 5320 */ 5321 if (((mrp->mrp_mask & MRP_RX_RINGS) && mip->mi_rx_groups == NULL) || 5322 ((mrp->mrp_mask & MRP_TX_RINGS) && mip->mi_tx_groups == NULL)) { 5323 return (EINVAL); 5324 } 5325 /* 5326 * If we are just resetting, there is no validation needed. 5327 */ 5328 if (reset) 5329 return (0); 5330 5331 if (mrp->mrp_mask & MRP_RX_RINGS) { 5332 rings_needed = mrp->mrp_nrxrings; 5333 /* 5334 * We just want to check if the number of additional 5335 * rings requested is available. 5336 */ 5337 if (mip_mrp->mrp_mask & MRP_RX_RINGS) { 5338 if (mrp->mrp_nrxrings > mip_mrp->mrp_nrxrings) 5339 /* Just check for the additional rings */ 5340 rings_needed -= mip_mrp->mrp_nrxrings; 5341 else 5342 /* We are not asking for additional rings */ 5343 rings_needed = 0; 5344 } 5345 rings_avail = mip->mi_rxrings_avail; 5346 gtype = mip->mi_rx_group_type; 5347 } else { 5348 rings_needed = mrp->mrp_ntxrings; 5349 /* Similarly for the TX rings */ 5350 if (mip_mrp->mrp_mask & MRP_TX_RINGS) { 5351 if (mrp->mrp_ntxrings > mip_mrp->mrp_ntxrings) 5352 /* Just check for the additional rings */ 5353 rings_needed -= mip_mrp->mrp_ntxrings; 5354 else 5355 /* We are not asking for additional rings */ 5356 rings_needed = 0; 5357 } 5358 rings_avail = mip->mi_txrings_avail; 5359 gtype = mip->mi_tx_group_type; 5360 } 5361 5362 /* Error if the group is dynamic .. */ 5363 if (gtype == MAC_GROUP_TYPE_DYNAMIC) { 5364 /* 5365 * .. and rings specified are more than available. 5366 */ 5367 if (rings_needed > rings_avail) 5368 return (EINVAL); 5369 } else { 5370 /* 5371 * OR group is static and we have specified some rings. 5372 */ 5373 if (rings_needed > 0) 5374 return (EINVAL); 5375 } 5376 return (0); 5377 } 5378 5379 /* 5380 * Send a MAC_NOTE_LINK notification to all the MAC clients whenever the 5381 * underlying physical link is down. This is to allow MAC clients to 5382 * communicate with other clients. 5383 */ 5384 void 5385 mac_virtual_link_update(mac_impl_t *mip) 5386 { 5387 if (mip->mi_linkstate != LINK_STATE_UP) 5388 i_mac_notify(mip, MAC_NOTE_LINK); 5389 } 5390 5391 /* 5392 * For clients that have a pass-thru MAC, e.g. VNIC, we set the VNIC's 5393 * mac handle in the client. 5394 */ 5395 void 5396 mac_set_upper_mac(mac_client_handle_t mch, mac_handle_t mh, 5397 mac_resource_props_t *mrp) 5398 { 5399 mac_client_impl_t *mcip = (mac_client_impl_t *)mch; 5400 mac_impl_t *mip = (mac_impl_t *)mh; 5401 5402 mcip->mci_upper_mip = mip; 5403 /* If there are any properties, copy it over too */ 5404 if (mrp != NULL) { 5405 bcopy(mrp, &mip->mi_resource_props, 5406 sizeof (mac_resource_props_t)); 5407 } 5408 } 5409 5410 /* 5411 * Mark the mac as being used exclusively by the single mac client that is 5412 * doing some control operation on this mac. No further opens of this mac 5413 * will be allowed until this client calls mac_unmark_exclusive. The mac 5414 * client calling this function must already be in the mac perimeter 5415 */ 5416 int 5417 mac_mark_exclusive(mac_handle_t mh) 5418 { 5419 mac_impl_t *mip = (mac_impl_t *)mh; 5420 5421 ASSERT(MAC_PERIM_HELD(mh)); 5422 /* 5423 * Look up its entry in the global hash table. 5424 */ 5425 rw_enter(&i_mac_impl_lock, RW_WRITER); 5426 if (mip->mi_state_flags & MIS_DISABLED) { 5427 rw_exit(&i_mac_impl_lock); 5428 return (ENOENT); 5429 } 5430 5431 /* 5432 * A reference to mac is held even if the link is not plumbed. 5433 * In i_dls_link_create() we open the MAC interface and hold the 5434 * reference. There is an additional reference for the mac_open 5435 * done in acquiring the mac perimeter 5436 */ 5437 if (mip->mi_ref != 2) { 5438 rw_exit(&i_mac_impl_lock); 5439 return (EBUSY); 5440 } 5441 5442 ASSERT(!(mip->mi_state_flags & MIS_EXCLUSIVE_HELD)); 5443 mip->mi_state_flags |= MIS_EXCLUSIVE_HELD; 5444 rw_exit(&i_mac_impl_lock); 5445 return (0); 5446 } 5447 5448 void 5449 mac_unmark_exclusive(mac_handle_t mh) 5450 { 5451 mac_impl_t *mip = (mac_impl_t *)mh; 5452 5453 ASSERT(MAC_PERIM_HELD(mh)); 5454 5455 rw_enter(&i_mac_impl_lock, RW_WRITER); 5456 /* 1 for the creation and another for the perimeter */ 5457 ASSERT(mip->mi_ref == 2 && (mip->mi_state_flags & MIS_EXCLUSIVE_HELD)); 5458 mip->mi_state_flags &= ~MIS_EXCLUSIVE_HELD; 5459 rw_exit(&i_mac_impl_lock); 5460 } 5461 5462 /* 5463 * Set the MTU for the specified MAC. 5464 */ 5465 int 5466 mac_set_mtu(mac_handle_t mh, uint_t new_mtu, uint_t *old_mtu_arg) 5467 { 5468 mac_impl_t *mip = (mac_impl_t *)mh; 5469 uint_t old_mtu; 5470 int rv = 0; 5471 5472 i_mac_perim_enter(mip); 5473 5474 if (!(mip->mi_callbacks->mc_callbacks & (MC_SETPROP|MC_GETPROP))) { 5475 rv = ENOTSUP; 5476 goto bail; 5477 } 5478 5479 old_mtu = mip->mi_sdu_max; 5480 5481 if (new_mtu == 0 || new_mtu < mip->mi_sdu_min) { 5482 rv = EINVAL; 5483 goto bail; 5484 } 5485 5486 rw_enter(&mip->mi_rw_lock, RW_READER); 5487 if (mip->mi_mtrp != NULL && new_mtu < mip->mi_mtrp->mtr_mtu) { 5488 rv = EBUSY; 5489 rw_exit(&mip->mi_rw_lock); 5490 goto bail; 5491 } 5492 rw_exit(&mip->mi_rw_lock); 5493 5494 if (old_mtu != new_mtu) { 5495 rv = mip->mi_callbacks->mc_setprop(mip->mi_driver, 5496 "mtu", MAC_PROP_MTU, sizeof (uint_t), &new_mtu); 5497 if (rv != 0) 5498 goto bail; 5499 rv = mac_maxsdu_update(mh, new_mtu); 5500 ASSERT(rv == 0); 5501 } 5502 5503 bail: 5504 i_mac_perim_exit(mip); 5505 5506 if (rv == 0 && old_mtu_arg != NULL) 5507 *old_mtu_arg = old_mtu; 5508 return (rv); 5509 } 5510 5511 /* 5512 * Return the RX h/w information for the group indexed by grp_num. 5513 */ 5514 void 5515 mac_get_hwrxgrp_info(mac_handle_t mh, int grp_index, uint_t *grp_num, 5516 uint_t *n_rings, uint_t *rings, uint_t *type, uint_t *n_clnts, 5517 char *clnts_name) 5518 { 5519 mac_impl_t *mip = (mac_impl_t *)mh; 5520 mac_grp_client_t *mcip; 5521 uint_t i = 0, index = 0; 5522 mac_ring_t *ring; 5523 5524 /* Revisit when we implement fully dynamic group allocation */ 5525 ASSERT(grp_index >= 0 && grp_index < mip->mi_rx_group_count); 5526 5527 rw_enter(&mip->mi_rw_lock, RW_READER); 5528 *grp_num = mip->mi_rx_groups[grp_index].mrg_index; 5529 *type = mip->mi_rx_groups[grp_index].mrg_type; 5530 *n_rings = mip->mi_rx_groups[grp_index].mrg_cur_count; 5531 ring = mip->mi_rx_groups[grp_index].mrg_rings; 5532 for (index = 0; index < mip->mi_rx_groups[grp_index].mrg_cur_count; 5533 index++) { 5534 rings[index] = ring->mr_index; 5535 ring = ring->mr_next; 5536 } 5537 /* Assuming the 1st is the default group */ 5538 index = 0; 5539 if (grp_index == 0) { 5540 (void) strlcpy(clnts_name, "<default,mcast>,", 5541 MAXCLIENTNAMELEN); 5542 index += strlen("<default,mcast>,"); 5543 } 5544 for (mcip = mip->mi_rx_groups[grp_index].mrg_clients; mcip != NULL; 5545 mcip = mcip->mgc_next) { 5546 int name_len = strlen(mcip->mgc_client->mci_name); 5547 5548 /* 5549 * MAXCLIENTNAMELEN is the buffer size reserved for client 5550 * names. 5551 * XXXX Formating the client name string needs to be moved 5552 * to user land when fixing the size of dhi_clnts in 5553 * dld_hwgrpinfo_t. We should use n_clients * client_name for 5554 * dhi_clntsin instead of MAXCLIENTNAMELEN 5555 */ 5556 if (index + name_len >= MAXCLIENTNAMELEN) { 5557 index = MAXCLIENTNAMELEN; 5558 break; 5559 } 5560 bcopy(mcip->mgc_client->mci_name, &(clnts_name[index]), 5561 name_len); 5562 index += name_len; 5563 clnts_name[index++] = ','; 5564 i++; 5565 } 5566 5567 /* Get rid of the last , */ 5568 if (index > 0) 5569 clnts_name[index - 1] = '\0'; 5570 *n_clnts = i; 5571 rw_exit(&mip->mi_rw_lock); 5572 } 5573 5574 /* 5575 * Return the TX h/w information for the group indexed by grp_num. 5576 */ 5577 void 5578 mac_get_hwtxgrp_info(mac_handle_t mh, int grp_index, uint_t *grp_num, 5579 uint_t *n_rings, uint_t *rings, uint_t *type, uint_t *n_clnts, 5580 char *clnts_name) 5581 { 5582 mac_impl_t *mip = (mac_impl_t *)mh; 5583 mac_grp_client_t *mcip; 5584 uint_t i = 0, index = 0; 5585 mac_ring_t *ring; 5586 5587 /* Revisit when we implement fully dynamic group allocation */ 5588 ASSERT(grp_index >= 0 && grp_index <= mip->mi_tx_group_count); 5589 5590 rw_enter(&mip->mi_rw_lock, RW_READER); 5591 *grp_num = mip->mi_tx_groups[grp_index].mrg_index > 0 ? 5592 mip->mi_tx_groups[grp_index].mrg_index : grp_index; 5593 *type = mip->mi_tx_groups[grp_index].mrg_type; 5594 *n_rings = mip->mi_tx_groups[grp_index].mrg_cur_count; 5595 ring = mip->mi_tx_groups[grp_index].mrg_rings; 5596 for (index = 0; index < mip->mi_tx_groups[grp_index].mrg_cur_count; 5597 index++) { 5598 rings[index] = ring->mr_index; 5599 ring = ring->mr_next; 5600 } 5601 index = 0; 5602 /* Default group has an index of -1 */ 5603 if (mip->mi_tx_groups[grp_index].mrg_index < 0) { 5604 (void) strlcpy(clnts_name, "<default>,", 5605 MAXCLIENTNAMELEN); 5606 index += strlen("<default>,"); 5607 } 5608 for (mcip = mip->mi_tx_groups[grp_index].mrg_clients; mcip != NULL; 5609 mcip = mcip->mgc_next) { 5610 int name_len = strlen(mcip->mgc_client->mci_name); 5611 5612 /* 5613 * MAXCLIENTNAMELEN is the buffer size reserved for client 5614 * names. 5615 * XXXX Formating the client name string needs to be moved 5616 * to user land when fixing the size of dhi_clnts in 5617 * dld_hwgrpinfo_t. We should use n_clients * client_name for 5618 * dhi_clntsin instead of MAXCLIENTNAMELEN 5619 */ 5620 if (index + name_len >= MAXCLIENTNAMELEN) { 5621 index = MAXCLIENTNAMELEN; 5622 break; 5623 } 5624 bcopy(mcip->mgc_client->mci_name, &(clnts_name[index]), 5625 name_len); 5626 index += name_len; 5627 clnts_name[index++] = ','; 5628 i++; 5629 } 5630 5631 /* Get rid of the last , */ 5632 if (index > 0) 5633 clnts_name[index - 1] = '\0'; 5634 *n_clnts = i; 5635 rw_exit(&mip->mi_rw_lock); 5636 } 5637 5638 /* 5639 * Return the group count for RX or TX. 5640 */ 5641 uint_t 5642 mac_hwgrp_num(mac_handle_t mh, int type) 5643 { 5644 mac_impl_t *mip = (mac_impl_t *)mh; 5645 5646 /* 5647 * Return the Rx and Tx group count; for the Tx we need to 5648 * include the default too. 5649 */ 5650 return (type == MAC_RING_TYPE_RX ? mip->mi_rx_group_count : 5651 mip->mi_tx_groups != NULL ? mip->mi_tx_group_count + 1 : 0); 5652 } 5653 5654 /* 5655 * The total number of free TX rings for this MAC. 5656 */ 5657 uint_t 5658 mac_txavail_get(mac_handle_t mh) 5659 { 5660 mac_impl_t *mip = (mac_impl_t *)mh; 5661 5662 return (mip->mi_txrings_avail); 5663 } 5664 5665 /* 5666 * The total number of free RX rings for this MAC. 5667 */ 5668 uint_t 5669 mac_rxavail_get(mac_handle_t mh) 5670 { 5671 mac_impl_t *mip = (mac_impl_t *)mh; 5672 5673 return (mip->mi_rxrings_avail); 5674 } 5675 5676 /* 5677 * The total number of reserved RX rings on this MAC. 5678 */ 5679 uint_t 5680 mac_rxrsvd_get(mac_handle_t mh) 5681 { 5682 mac_impl_t *mip = (mac_impl_t *)mh; 5683 5684 return (mip->mi_rxrings_rsvd); 5685 } 5686 5687 /* 5688 * The total number of reserved TX rings on this MAC. 5689 */ 5690 uint_t 5691 mac_txrsvd_get(mac_handle_t mh) 5692 { 5693 mac_impl_t *mip = (mac_impl_t *)mh; 5694 5695 return (mip->mi_txrings_rsvd); 5696 } 5697 5698 /* 5699 * Total number of free RX groups on this MAC. 5700 */ 5701 uint_t 5702 mac_rxhwlnksavail_get(mac_handle_t mh) 5703 { 5704 mac_impl_t *mip = (mac_impl_t *)mh; 5705 5706 return (mip->mi_rxhwclnt_avail); 5707 } 5708 5709 /* 5710 * Total number of RX groups reserved on this MAC. 5711 */ 5712 uint_t 5713 mac_rxhwlnksrsvd_get(mac_handle_t mh) 5714 { 5715 mac_impl_t *mip = (mac_impl_t *)mh; 5716 5717 return (mip->mi_rxhwclnt_used); 5718 } 5719 5720 /* 5721 * Total number of free TX groups on this MAC. 5722 */ 5723 uint_t 5724 mac_txhwlnksavail_get(mac_handle_t mh) 5725 { 5726 mac_impl_t *mip = (mac_impl_t *)mh; 5727 5728 return (mip->mi_txhwclnt_avail); 5729 } 5730 5731 /* 5732 * Total number of TX groups reserved on this MAC. 5733 */ 5734 uint_t 5735 mac_txhwlnksrsvd_get(mac_handle_t mh) 5736 { 5737 mac_impl_t *mip = (mac_impl_t *)mh; 5738 5739 return (mip->mi_txhwclnt_used); 5740 } 5741 5742 /* 5743 * Initialize the rings property for a mac client. A non-0 value for 5744 * rxring or txring specifies the number of rings required, a value 5745 * of MAC_RXRINGS_NONE/MAC_TXRINGS_NONE specifies that it doesn't need 5746 * any RX/TX rings and a value of MAC_RXRINGS_DONTCARE/MAC_TXRINGS_DONTCARE 5747 * means the system can decide whether it can give any rings or not. 5748 */ 5749 void 5750 mac_client_set_rings(mac_client_handle_t mch, int rxrings, int txrings) 5751 { 5752 mac_client_impl_t *mcip = (mac_client_impl_t *)mch; 5753 mac_resource_props_t *mrp = MCIP_RESOURCE_PROPS(mcip); 5754 5755 if (rxrings != MAC_RXRINGS_DONTCARE) { 5756 mrp->mrp_mask |= MRP_RX_RINGS; 5757 mrp->mrp_nrxrings = rxrings; 5758 } 5759 5760 if (txrings != MAC_TXRINGS_DONTCARE) { 5761 mrp->mrp_mask |= MRP_TX_RINGS; 5762 mrp->mrp_ntxrings = txrings; 5763 } 5764 } 5765 5766 boolean_t 5767 mac_get_promisc_filtered(mac_client_handle_t mch) 5768 { 5769 mac_client_impl_t *mcip = (mac_client_impl_t *)mch; 5770 5771 return (mcip->mci_protect_flags & MPT_FLAG_PROMISC_FILTERED); 5772 } 5773 5774 void 5775 mac_set_promisc_filtered(mac_client_handle_t mch, boolean_t enable) 5776 { 5777 mac_client_impl_t *mcip = (mac_client_impl_t *)mch; 5778 5779 ASSERT(MAC_PERIM_HELD((mac_handle_t)mcip->mci_mip)); 5780 if (enable) 5781 mcip->mci_protect_flags |= MPT_FLAG_PROMISC_FILTERED; 5782 else 5783 mcip->mci_protect_flags &= ~MPT_FLAG_PROMISC_FILTERED; 5784 } 5785