1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Copyright 2002-2005, Instant802 Networks, Inc. 4 * Copyright 2005-2006, Devicescape Software, Inc. 5 * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz> 6 * Copyright 2013-2014 Intel Mobile Communications GmbH 7 * Copyright (C) 2017 Intel Deutschland GmbH 8 * Copyright (C) 2018-2026 Intel Corporation 9 */ 10 11 #include <net/mac80211.h> 12 #include <linux/module.h> 13 #include <linux/fips.h> 14 #include <linux/init.h> 15 #include <linux/netdevice.h> 16 #include <linux/types.h> 17 #include <linux/slab.h> 18 #include <linux/skbuff.h> 19 #include <linux/etherdevice.h> 20 #include <linux/if_arp.h> 21 #include <linux/rtnetlink.h> 22 #include <linux/bitmap.h> 23 #include <linux/inetdevice.h> 24 #include <net/net_namespace.h> 25 #include <net/dropreason.h> 26 #include <net/cfg80211.h> 27 #include <net/addrconf.h> 28 29 #include "ieee80211_i.h" 30 #include "driver-ops.h" 31 #include "rate.h" 32 #include "mesh.h" 33 #include "wep.h" 34 #include "led.h" 35 #include "debugfs.h" 36 37 void ieee80211_configure_filter(struct ieee80211_local *local) 38 { 39 u64 mc; 40 unsigned int changed_flags; 41 unsigned int new_flags = 0; 42 43 if (atomic_read(&local->iff_allmultis)) 44 new_flags |= FIF_ALLMULTI; 45 46 if (local->monitors || test_bit(SCAN_SW_SCANNING, &local->scanning) || 47 test_bit(SCAN_ONCHANNEL_SCANNING, &local->scanning)) 48 new_flags |= FIF_BCN_PRBRESP_PROMISC; 49 50 if (local->fif_probe_req || local->probe_req_reg) 51 new_flags |= FIF_PROBE_REQ; 52 53 if (local->fif_fcsfail) 54 new_flags |= FIF_FCSFAIL; 55 56 if (local->fif_plcpfail) 57 new_flags |= FIF_PLCPFAIL; 58 59 if (local->fif_control) 60 new_flags |= FIF_CONTROL; 61 62 if (local->fif_other_bss) 63 new_flags |= FIF_OTHER_BSS; 64 65 if (local->fif_pspoll) 66 new_flags |= FIF_PSPOLL; 67 68 if (local->rx_mcast_action_reg) 69 new_flags |= FIF_MCAST_ACTION; 70 71 spin_lock_bh(&local->filter_lock); 72 changed_flags = local->filter_flags ^ new_flags; 73 74 mc = drv_prepare_multicast(local, &local->mc_list); 75 spin_unlock_bh(&local->filter_lock); 76 77 /* be a bit nasty */ 78 new_flags |= (1<<31); 79 80 drv_configure_filter(local, changed_flags, &new_flags, mc); 81 82 WARN_ON(new_flags & (1<<31)); 83 84 local->filter_flags = new_flags & ~(1<<31); 85 } 86 87 static void ieee80211_reconfig_filter(struct wiphy *wiphy, 88 struct wiphy_work *work) 89 { 90 struct ieee80211_local *local = 91 container_of(work, struct ieee80211_local, reconfig_filter); 92 93 ieee80211_configure_filter(local); 94 } 95 96 static u32 ieee80211_calc_hw_conf_chan(struct ieee80211_local *local, 97 struct ieee80211_chanctx_conf *ctx) 98 { 99 struct ieee80211_sub_if_data *sdata; 100 struct cfg80211_chan_def chandef = {}; 101 struct cfg80211_chan_def *oper = NULL; 102 enum ieee80211_smps_mode smps_mode = IEEE80211_SMPS_STATIC; 103 u32 changed = 0; 104 int power; 105 u32 offchannel_flag; 106 107 if (!local->emulate_chanctx) 108 return 0; 109 110 offchannel_flag = local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL; 111 112 if (ctx && !WARN_ON(!ctx->def.chan)) { 113 oper = &ctx->def; 114 if (ctx->rx_chains_static > 1) 115 smps_mode = IEEE80211_SMPS_OFF; 116 else if (ctx->rx_chains_dynamic > 1) 117 smps_mode = IEEE80211_SMPS_DYNAMIC; 118 else 119 smps_mode = IEEE80211_SMPS_STATIC; 120 } 121 122 if (local->scan_chandef.chan) { 123 chandef = local->scan_chandef; 124 } else if (local->tmp_channel) { 125 chandef.chan = local->tmp_channel; 126 chandef.width = NL80211_CHAN_WIDTH_20_NOHT; 127 chandef.center_freq1 = chandef.chan->center_freq; 128 chandef.freq1_offset = chandef.chan->freq_offset; 129 } else if (oper) { 130 chandef = *oper; 131 } else { 132 chandef = local->dflt_chandef; 133 } 134 135 if (WARN(!cfg80211_chandef_valid(&chandef), 136 "control:%d.%03d MHz width:%d center: %d.%03d/%d MHz", 137 chandef.chan ? chandef.chan->center_freq : -1, 138 chandef.chan ? chandef.chan->freq_offset : 0, 139 chandef.width, chandef.center_freq1, chandef.freq1_offset, 140 chandef.center_freq2)) 141 return 0; 142 143 if (!oper || !cfg80211_chandef_identical(&chandef, oper)) 144 local->hw.conf.flags |= IEEE80211_CONF_OFFCHANNEL; 145 else 146 local->hw.conf.flags &= ~IEEE80211_CONF_OFFCHANNEL; 147 148 offchannel_flag ^= local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL; 149 150 /* force it also for scanning, since drivers might config differently */ 151 if (offchannel_flag || local->scanning || local->in_reconfig || 152 !cfg80211_chandef_identical(&local->hw.conf.chandef, &chandef)) { 153 local->hw.conf.chandef = chandef; 154 changed |= IEEE80211_CONF_CHANGE_CHANNEL; 155 } 156 157 if (!conf_is_ht(&local->hw.conf)) { 158 /* 159 * mac80211.h documents that this is only valid 160 * when the channel is set to an HT type, and 161 * that otherwise STATIC is used. 162 */ 163 local->hw.conf.smps_mode = IEEE80211_SMPS_STATIC; 164 } else if (local->hw.conf.smps_mode != smps_mode) { 165 local->hw.conf.smps_mode = smps_mode; 166 changed |= IEEE80211_CONF_CHANGE_SMPS; 167 } 168 169 power = ieee80211_chandef_max_power(&chandef); 170 if (local->user_power_level != IEEE80211_UNSET_POWER_LEVEL) 171 power = min(local->user_power_level, power); 172 173 rcu_read_lock(); 174 list_for_each_entry_rcu(sdata, &local->interfaces, list) { 175 if (!rcu_access_pointer(sdata->vif.bss_conf.chanctx_conf)) 176 continue; 177 if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) 178 continue; 179 if (sdata->vif.bss_conf.txpower == INT_MIN) 180 continue; 181 power = min(power, sdata->vif.bss_conf.txpower); 182 } 183 rcu_read_unlock(); 184 185 if (local->hw.conf.power_level != power) { 186 changed |= IEEE80211_CONF_CHANGE_POWER; 187 local->hw.conf.power_level = power; 188 } 189 190 return changed; 191 } 192 193 int ieee80211_hw_config(struct ieee80211_local *local, int radio_idx, 194 u32 changed) 195 { 196 int ret = 0; 197 198 might_sleep(); 199 200 WARN_ON(changed & (IEEE80211_CONF_CHANGE_CHANNEL | 201 IEEE80211_CONF_CHANGE_POWER | 202 IEEE80211_CONF_CHANGE_SMPS)); 203 204 if (changed && local->open_count) { 205 ret = drv_config(local, radio_idx, changed); 206 /* 207 * Goal: 208 * HW reconfiguration should never fail, the driver has told 209 * us what it can support so it should live up to that promise. 210 * 211 * Current status: 212 * rfkill is not integrated with mac80211 and a 213 * configuration command can thus fail if hardware rfkill 214 * is enabled 215 * 216 * FIXME: integrate rfkill with mac80211 and then add this 217 * WARN_ON() back 218 * 219 */ 220 /* WARN_ON(ret); */ 221 } 222 223 return ret; 224 } 225 226 /* for scanning, offchannel and chanctx emulation only */ 227 static int _ieee80211_hw_conf_chan(struct ieee80211_local *local, 228 struct ieee80211_chanctx_conf *ctx) 229 { 230 u32 changed; 231 232 if (!local->open_count) 233 return 0; 234 235 changed = ieee80211_calc_hw_conf_chan(local, ctx); 236 if (!changed) 237 return 0; 238 239 return drv_config(local, -1, changed); 240 } 241 242 int ieee80211_hw_conf_chan(struct ieee80211_local *local) 243 { 244 struct ieee80211_chanctx *ctx; 245 246 ctx = list_first_entry_or_null(&local->chanctx_list, 247 struct ieee80211_chanctx, 248 list); 249 250 return _ieee80211_hw_conf_chan(local, ctx ? &ctx->conf : NULL); 251 } 252 253 void ieee80211_hw_conf_init(struct ieee80211_local *local) 254 { 255 u32 changed = ~(IEEE80211_CONF_CHANGE_CHANNEL | 256 IEEE80211_CONF_CHANGE_POWER | 257 IEEE80211_CONF_CHANGE_SMPS); 258 259 if (WARN_ON(!local->open_count)) 260 return; 261 262 if (local->emulate_chanctx) { 263 struct ieee80211_chanctx *ctx; 264 265 ctx = list_first_entry_or_null(&local->chanctx_list, 266 struct ieee80211_chanctx, 267 list); 268 269 changed |= ieee80211_calc_hw_conf_chan(local, 270 ctx ? &ctx->conf : NULL); 271 } 272 273 WARN_ON(drv_config(local, -1, changed)); 274 } 275 276 int ieee80211_emulate_add_chanctx(struct ieee80211_hw *hw, 277 struct ieee80211_chanctx_conf *ctx) 278 { 279 struct ieee80211_local *local = hw_to_local(hw); 280 281 local->hw.conf.radar_enabled = ctx->radar_enabled; 282 283 return _ieee80211_hw_conf_chan(local, ctx); 284 } 285 EXPORT_SYMBOL(ieee80211_emulate_add_chanctx); 286 287 void ieee80211_emulate_remove_chanctx(struct ieee80211_hw *hw, 288 struct ieee80211_chanctx_conf *ctx) 289 { 290 struct ieee80211_local *local = hw_to_local(hw); 291 292 local->hw.conf.radar_enabled = false; 293 294 _ieee80211_hw_conf_chan(local, NULL); 295 } 296 EXPORT_SYMBOL(ieee80211_emulate_remove_chanctx); 297 298 void ieee80211_emulate_change_chanctx(struct ieee80211_hw *hw, 299 struct ieee80211_chanctx_conf *ctx, 300 u32 changed) 301 { 302 struct ieee80211_local *local = hw_to_local(hw); 303 304 local->hw.conf.radar_enabled = ctx->radar_enabled; 305 306 _ieee80211_hw_conf_chan(local, ctx); 307 } 308 EXPORT_SYMBOL(ieee80211_emulate_change_chanctx); 309 310 int ieee80211_emulate_switch_vif_chanctx(struct ieee80211_hw *hw, 311 struct ieee80211_vif_chanctx_switch *vifs, 312 int n_vifs, 313 enum ieee80211_chanctx_switch_mode mode) 314 { 315 struct ieee80211_local *local = hw_to_local(hw); 316 317 if (n_vifs <= 0) 318 return -EINVAL; 319 320 local->hw.conf.radar_enabled = vifs[0].new_ctx->radar_enabled; 321 _ieee80211_hw_conf_chan(local, vifs[0].new_ctx); 322 323 return 0; 324 } 325 EXPORT_SYMBOL(ieee80211_emulate_switch_vif_chanctx); 326 327 #define BSS_CHANGED_VIF_CFG_FLAGS (BSS_CHANGED_ASSOC |\ 328 BSS_CHANGED_IDLE |\ 329 BSS_CHANGED_PS |\ 330 BSS_CHANGED_IBSS |\ 331 BSS_CHANGED_ARP_FILTER |\ 332 BSS_CHANGED_SSID |\ 333 BSS_CHANGED_MLD_VALID_LINKS |\ 334 BSS_CHANGED_MLD_TTLM) 335 336 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, 337 u64 changed) 338 { 339 struct ieee80211_local *local = sdata->local; 340 341 might_sleep(); 342 343 WARN_ON_ONCE(ieee80211_vif_is_mld(&sdata->vif)); 344 345 if (!changed || sdata->vif.type == NL80211_IFTYPE_AP_VLAN) 346 return; 347 348 if (WARN_ON_ONCE(changed & (BSS_CHANGED_BEACON | 349 BSS_CHANGED_BEACON_ENABLED) && 350 sdata->vif.type != NL80211_IFTYPE_AP && 351 sdata->vif.type != NL80211_IFTYPE_ADHOC && 352 sdata->vif.type != NL80211_IFTYPE_MESH_POINT && 353 sdata->vif.type != NL80211_IFTYPE_OCB)) 354 return; 355 356 if (WARN_ON_ONCE(sdata->vif.type == NL80211_IFTYPE_P2P_DEVICE || 357 sdata->vif.type == NL80211_IFTYPE_NAN || 358 (sdata->vif.type == NL80211_IFTYPE_MONITOR && 359 changed & ~BSS_CHANGED_TXPOWER))) 360 return; 361 362 if (!check_sdata_in_driver(sdata)) 363 return; 364 365 if (changed & BSS_CHANGED_VIF_CFG_FLAGS) { 366 u64 ch = changed & BSS_CHANGED_VIF_CFG_FLAGS; 367 368 trace_drv_vif_cfg_changed(local, sdata, changed); 369 if (local->ops->vif_cfg_changed) 370 local->ops->vif_cfg_changed(&local->hw, &sdata->vif, ch); 371 } 372 373 if (changed & ~BSS_CHANGED_VIF_CFG_FLAGS) { 374 u64 ch = changed & ~BSS_CHANGED_VIF_CFG_FLAGS; 375 376 trace_drv_link_info_changed(local, sdata, &sdata->vif.bss_conf, 377 changed); 378 if (local->ops->link_info_changed) 379 local->ops->link_info_changed(&local->hw, &sdata->vif, 380 &sdata->vif.bss_conf, ch); 381 } 382 383 if (local->ops->bss_info_changed) 384 local->ops->bss_info_changed(&local->hw, &sdata->vif, 385 &sdata->vif.bss_conf, changed); 386 trace_drv_return_void(local); 387 } 388 389 void ieee80211_vif_cfg_change_notify(struct ieee80211_sub_if_data *sdata, 390 u64 changed) 391 { 392 struct ieee80211_local *local = sdata->local; 393 394 WARN_ON_ONCE(changed & ~BSS_CHANGED_VIF_CFG_FLAGS); 395 396 if (!changed || sdata->vif.type == NL80211_IFTYPE_AP_VLAN) 397 return; 398 399 drv_vif_cfg_changed(local, sdata, changed); 400 } 401 402 void ieee80211_link_info_change_notify(struct ieee80211_sub_if_data *sdata, 403 struct ieee80211_link_data *link, 404 u64 changed) 405 { 406 struct ieee80211_local *local = sdata->local; 407 408 WARN_ON_ONCE(changed & BSS_CHANGED_VIF_CFG_FLAGS); 409 410 if (!changed) 411 return; 412 413 switch (sdata->vif.type) { 414 case NL80211_IFTYPE_AP_VLAN: 415 return; 416 case NL80211_IFTYPE_MONITOR: 417 if (!ieee80211_hw_check(&local->hw, WANT_MONITOR_VIF)) 418 return; 419 break; 420 default: 421 break; 422 } 423 424 if (!check_sdata_in_driver(sdata)) 425 return; 426 427 drv_link_info_changed(local, sdata, link->conf, link->link_id, changed); 428 } 429 430 u64 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata) 431 { 432 sdata->vif.bss_conf.use_cts_prot = false; 433 sdata->vif.bss_conf.use_short_preamble = false; 434 sdata->vif.bss_conf.use_short_slot = false; 435 return BSS_CHANGED_ERP_CTS_PROT | 436 BSS_CHANGED_ERP_PREAMBLE | 437 BSS_CHANGED_ERP_SLOT; 438 } 439 440 /* context: requires softirqs disabled */ 441 void ieee80211_handle_queued_frames(struct ieee80211_local *local) 442 { 443 struct sk_buff *skb; 444 445 while ((skb = skb_dequeue(&local->skb_queue)) || 446 (skb = skb_dequeue(&local->skb_queue_unreliable))) { 447 switch (skb->pkt_type) { 448 case IEEE80211_RX_MSG: 449 /* Clear skb->pkt_type in order to not confuse kernel 450 * netstack. */ 451 skb->pkt_type = 0; 452 ieee80211_rx(&local->hw, skb); 453 break; 454 case IEEE80211_TX_STATUS_MSG: 455 skb->pkt_type = 0; 456 ieee80211_tx_status_skb(&local->hw, skb); 457 break; 458 default: 459 WARN(1, "mac80211: Packet is of unknown type %d\n", 460 skb->pkt_type); 461 dev_kfree_skb(skb); 462 break; 463 } 464 } 465 } 466 467 static void ieee80211_tasklet_handler(struct tasklet_struct *t) 468 { 469 struct ieee80211_local *local = from_tasklet(local, t, tasklet); 470 471 ieee80211_handle_queued_frames(local); 472 } 473 474 static void ieee80211_restart_work(struct work_struct *work) 475 { 476 struct ieee80211_local *local = 477 container_of(work, struct ieee80211_local, restart_work); 478 struct ieee80211_sub_if_data *sdata; 479 int ret; 480 481 flush_workqueue(local->workqueue); 482 483 rtnl_lock(); 484 /* we might do interface manipulations, so need both */ 485 wiphy_lock(local->hw.wiphy); 486 wiphy_work_flush(local->hw.wiphy, NULL); 487 488 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning), 489 "%s called with hardware scan in progress\n", __func__); 490 491 list_for_each_entry(sdata, &local->interfaces, list) { 492 /* 493 * XXX: there may be more work for other vif types and even 494 * for station mode: a good thing would be to run most of 495 * the iface type's dependent _stop (ieee80211_mg_stop, 496 * ieee80211_ibss_stop) etc... 497 * For now, fix only the specific bug that was seen: race 498 * between csa_connection_drop_work and us. 499 */ 500 if (sdata->vif.type == NL80211_IFTYPE_STATION) { 501 /* 502 * This worker is scheduled from the iface worker that 503 * runs on mac80211's workqueue, so we can't be 504 * scheduling this worker after the cancel right here. 505 * The exception is ieee80211_chswitch_done. 506 * Then we can have a race... 507 */ 508 wiphy_work_cancel(local->hw.wiphy, 509 &sdata->u.mgd.csa_connection_drop_work); 510 if (sdata->vif.bss_conf.csa_active) 511 ieee80211_sta_connection_lost(sdata, 512 WLAN_REASON_UNSPECIFIED, 513 false); 514 } 515 wiphy_delayed_work_flush(local->hw.wiphy, 516 &sdata->dec_tailroom_needed_wk); 517 } 518 ieee80211_scan_cancel(local); 519 520 /* make sure any new ROC will consider local->in_reconfig */ 521 wiphy_delayed_work_flush(local->hw.wiphy, &local->roc_work); 522 wiphy_work_flush(local->hw.wiphy, &local->hw_roc_done); 523 524 /* wait for all packet processing to be done */ 525 synchronize_net(); 526 527 ret = ieee80211_reconfig(local); 528 wiphy_unlock(local->hw.wiphy); 529 530 if (ret) 531 cfg80211_shutdown_all_interfaces(local->hw.wiphy); 532 533 rtnl_unlock(); 534 } 535 536 void ieee80211_restart_hw(struct ieee80211_hw *hw) 537 { 538 struct ieee80211_local *local = hw_to_local(hw); 539 540 trace_api_restart_hw(local); 541 542 wiphy_info(hw->wiphy, 543 "Hardware restart was requested\n"); 544 545 /* use this reason, ieee80211_reconfig will unblock it */ 546 ieee80211_stop_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, 547 IEEE80211_QUEUE_STOP_REASON_SUSPEND, 548 false); 549 550 /* 551 * Stop all Rx during the reconfig. We don't want state changes 552 * or driver callbacks while this is in progress. 553 */ 554 local->in_reconfig = true; 555 barrier(); 556 557 queue_work(system_freezable_wq, &local->restart_work); 558 } 559 EXPORT_SYMBOL(ieee80211_restart_hw); 560 561 #ifdef CONFIG_INET 562 static int ieee80211_ifa_changed(struct notifier_block *nb, 563 unsigned long data, void *arg) 564 { 565 struct in_ifaddr *ifa = arg; 566 struct ieee80211_local *local = 567 container_of(nb, struct ieee80211_local, 568 ifa_notifier); 569 struct net_device *ndev = ifa->ifa_dev->dev; 570 struct wireless_dev *wdev = ndev->ieee80211_ptr; 571 struct in_device *idev; 572 struct ieee80211_sub_if_data *sdata; 573 struct ieee80211_vif_cfg *vif_cfg; 574 struct ieee80211_if_managed *ifmgd; 575 int c = 0; 576 577 /* Make sure it's our interface that got changed */ 578 if (!wdev) 579 return NOTIFY_DONE; 580 581 if (wdev->wiphy != local->hw.wiphy || !wdev->registered) 582 return NOTIFY_DONE; 583 584 sdata = IEEE80211_DEV_TO_SUB_IF(ndev); 585 vif_cfg = &sdata->vif.cfg; 586 587 /* ARP filtering is only supported in managed mode */ 588 if (sdata->vif.type != NL80211_IFTYPE_STATION) 589 return NOTIFY_DONE; 590 591 idev = __in_dev_get_rtnl(sdata->dev); 592 if (!idev) 593 return NOTIFY_DONE; 594 595 ifmgd = &sdata->u.mgd; 596 597 /* 598 * The nested here is needed to convince lockdep that this is 599 * all OK. Yes, we lock the wiphy mutex here while we already 600 * hold the notifier rwsem, that's the normal case. And yes, 601 * we also acquire the notifier rwsem again when unregistering 602 * a netdev while we already hold the wiphy mutex, so it does 603 * look like a typical ABBA deadlock. 604 * 605 * However, both of these things happen with the RTNL held 606 * already. Therefore, they can't actually happen, since the 607 * lock orders really are ABC and ACB, which is fine due to 608 * the RTNL (A). 609 * 610 * We still need to prevent recursion, which is accomplished 611 * by the !wdev->registered check above. 612 */ 613 mutex_lock_nested(&local->hw.wiphy->mtx, 1); 614 __acquire(&local->hw.wiphy->mtx); 615 616 /* Copy the addresses to the vif config list */ 617 ifa = rtnl_dereference(idev->ifa_list); 618 while (ifa) { 619 if (c < IEEE80211_BSS_ARP_ADDR_LIST_LEN) 620 vif_cfg->arp_addr_list[c] = ifa->ifa_address; 621 ifa = rtnl_dereference(ifa->ifa_next); 622 c++; 623 } 624 625 vif_cfg->arp_addr_cnt = c; 626 627 /* Configure driver only if associated (which also implies it is up) */ 628 if (ifmgd->associated) 629 ieee80211_vif_cfg_change_notify(sdata, BSS_CHANGED_ARP_FILTER); 630 631 wiphy_unlock(local->hw.wiphy); 632 633 return NOTIFY_OK; 634 } 635 #endif 636 637 #if IS_ENABLED(CONFIG_IPV6) 638 static int ieee80211_ifa6_changed(struct notifier_block *nb, 639 unsigned long data, void *arg) 640 { 641 struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)arg; 642 struct inet6_dev *idev = ifa->idev; 643 struct net_device *ndev = ifa->idev->dev; 644 struct ieee80211_local *local = 645 container_of(nb, struct ieee80211_local, ifa6_notifier); 646 struct wireless_dev *wdev = ndev->ieee80211_ptr; 647 struct ieee80211_sub_if_data *sdata; 648 649 /* Make sure it's our interface that got changed */ 650 if (!wdev || wdev->wiphy != local->hw.wiphy) 651 return NOTIFY_DONE; 652 653 sdata = IEEE80211_DEV_TO_SUB_IF(ndev); 654 655 /* 656 * For now only support station mode. This is mostly because 657 * doing AP would have to handle AP_VLAN in some way ... 658 */ 659 if (sdata->vif.type != NL80211_IFTYPE_STATION) 660 return NOTIFY_DONE; 661 662 drv_ipv6_addr_change(local, sdata, idev); 663 664 return NOTIFY_OK; 665 } 666 #endif 667 668 /* There isn't a lot of sense in it, but you can transmit anything you like */ 669 static const struct ieee80211_txrx_stypes 670 ieee80211_default_mgmt_stypes[NUM_NL80211_IFTYPES] = { 671 [NL80211_IFTYPE_ADHOC] = { 672 .tx = 0xffff, 673 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | 674 BIT(IEEE80211_STYPE_AUTH >> 4) | 675 BIT(IEEE80211_STYPE_DEAUTH >> 4) | 676 BIT(IEEE80211_STYPE_PROBE_REQ >> 4), 677 }, 678 [NL80211_IFTYPE_STATION] = { 679 .tx = 0xffff, 680 /* 681 * To support Pre Association Security Negotiation (PASN) while 682 * already associated to one AP, allow user space to register to 683 * Rx authentication frames, so that the user space logic would 684 * be able to receive/handle authentication frames from a 685 * different AP as part of PASN. 686 * It is expected that user space would intelligently register 687 * for Rx authentication frames, i.e., only when PASN is used 688 * and configure a match filter only for PASN authentication 689 * algorithm, as otherwise the MLME functionality of mac80211 690 * would be broken. 691 */ 692 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | 693 BIT(IEEE80211_STYPE_AUTH >> 4) | 694 BIT(IEEE80211_STYPE_PROBE_REQ >> 4), 695 }, 696 [NL80211_IFTYPE_AP] = { 697 .tx = 0xffff, 698 .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) | 699 BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) | 700 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) | 701 BIT(IEEE80211_STYPE_DISASSOC >> 4) | 702 BIT(IEEE80211_STYPE_AUTH >> 4) | 703 BIT(IEEE80211_STYPE_DEAUTH >> 4) | 704 BIT(IEEE80211_STYPE_ACTION >> 4), 705 }, 706 [NL80211_IFTYPE_AP_VLAN] = { 707 /* copy AP */ 708 .tx = 0xffff, 709 .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) | 710 BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) | 711 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) | 712 BIT(IEEE80211_STYPE_DISASSOC >> 4) | 713 BIT(IEEE80211_STYPE_AUTH >> 4) | 714 BIT(IEEE80211_STYPE_DEAUTH >> 4) | 715 BIT(IEEE80211_STYPE_ACTION >> 4), 716 }, 717 [NL80211_IFTYPE_P2P_CLIENT] = { 718 .tx = 0xffff, 719 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | 720 BIT(IEEE80211_STYPE_PROBE_REQ >> 4), 721 }, 722 [NL80211_IFTYPE_P2P_GO] = { 723 .tx = 0xffff, 724 .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) | 725 BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) | 726 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) | 727 BIT(IEEE80211_STYPE_DISASSOC >> 4) | 728 BIT(IEEE80211_STYPE_AUTH >> 4) | 729 BIT(IEEE80211_STYPE_DEAUTH >> 4) | 730 BIT(IEEE80211_STYPE_ACTION >> 4), 731 }, 732 [NL80211_IFTYPE_MESH_POINT] = { 733 .tx = 0xffff, 734 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | 735 BIT(IEEE80211_STYPE_AUTH >> 4) | 736 BIT(IEEE80211_STYPE_DEAUTH >> 4), 737 }, 738 [NL80211_IFTYPE_P2P_DEVICE] = { 739 .tx = 0xffff, 740 /* 741 * To support P2P PASN pairing let user space register to rx 742 * also AUTH frames on P2P device interface. 743 */ 744 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | 745 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) | 746 BIT(IEEE80211_STYPE_AUTH >> 4), 747 }, 748 [NL80211_IFTYPE_NAN] = { 749 .tx = 0xffff, 750 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | 751 BIT(IEEE80211_STYPE_AUTH >> 4), 752 }, 753 [NL80211_IFTYPE_NAN_DATA] = { 754 .tx = 0xffff, 755 .rx = BIT(IEEE80211_STYPE_ACTION >> 4), 756 }, 757 }; 758 759 static const struct ieee80211_ht_cap mac80211_ht_capa_mod_mask = { 760 .ampdu_params_info = IEEE80211_HT_AMPDU_PARM_FACTOR | 761 IEEE80211_HT_AMPDU_PARM_DENSITY, 762 763 .cap_info = cpu_to_le16(IEEE80211_HT_CAP_SUP_WIDTH_20_40 | 764 IEEE80211_HT_CAP_MAX_AMSDU | 765 IEEE80211_HT_CAP_SGI_20 | 766 IEEE80211_HT_CAP_SGI_40 | 767 IEEE80211_HT_CAP_TX_STBC | 768 IEEE80211_HT_CAP_RX_STBC | 769 IEEE80211_HT_CAP_LDPC_CODING | 770 IEEE80211_HT_CAP_40MHZ_INTOLERANT), 771 .mcs = { 772 .rx_mask = { 0xff, 0xff, 0xff, 0xff, 0xff, 773 0xff, 0xff, 0xff, 0xff, 0xff, }, 774 }, 775 }; 776 777 static const struct ieee80211_vht_cap mac80211_vht_capa_mod_mask = { 778 .vht_cap_info = 779 cpu_to_le32(IEEE80211_VHT_CAP_RXLDPC | 780 IEEE80211_VHT_CAP_SHORT_GI_80 | 781 IEEE80211_VHT_CAP_SHORT_GI_160 | 782 IEEE80211_VHT_CAP_RXSTBC_MASK | 783 IEEE80211_VHT_CAP_TXSTBC | 784 IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE | 785 IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE | 786 IEEE80211_VHT_CAP_TX_ANTENNA_PATTERN | 787 IEEE80211_VHT_CAP_RX_ANTENNA_PATTERN | 788 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK), 789 .supp_mcs = { 790 .rx_mcs_map = cpu_to_le16(~0), 791 .tx_mcs_map = cpu_to_le16(~0), 792 }, 793 }; 794 795 struct ieee80211_hw *ieee80211_alloc_hw_nm(size_t priv_data_len, 796 const struct ieee80211_ops *ops, 797 const char *requested_name) 798 { 799 struct ieee80211_local *local; 800 int priv_size, i; 801 struct wiphy *wiphy; 802 bool emulate_chanctx; 803 804 if (WARN_ON(!ops->tx || !ops->start || !ops->stop || !ops->config || 805 !ops->add_interface || !ops->remove_interface || 806 !ops->configure_filter || !ops->wake_tx_queue)) 807 return NULL; 808 809 if (WARN_ON(ops->sta_state && (ops->sta_add || ops->sta_remove))) 810 return NULL; 811 812 if (WARN_ON(!!ops->link_info_changed != !!ops->vif_cfg_changed || 813 (ops->link_info_changed && ops->bss_info_changed))) 814 return NULL; 815 816 /* check all or no channel context operations exist */ 817 if (ops->add_chanctx == ieee80211_emulate_add_chanctx && 818 ops->remove_chanctx == ieee80211_emulate_remove_chanctx && 819 ops->change_chanctx == ieee80211_emulate_change_chanctx) { 820 if (WARN_ON(ops->assign_vif_chanctx || 821 ops->unassign_vif_chanctx)) 822 return NULL; 823 emulate_chanctx = true; 824 } else { 825 if (WARN_ON(ops->add_chanctx == ieee80211_emulate_add_chanctx || 826 ops->remove_chanctx == ieee80211_emulate_remove_chanctx || 827 ops->change_chanctx == ieee80211_emulate_change_chanctx)) 828 return NULL; 829 if (WARN_ON(!ops->add_chanctx || 830 !ops->remove_chanctx || 831 !ops->change_chanctx || 832 !ops->assign_vif_chanctx || 833 !ops->unassign_vif_chanctx)) 834 return NULL; 835 emulate_chanctx = false; 836 } 837 838 /* Ensure 32-byte alignment of our private data and hw private data. 839 * We use the wiphy priv data for both our ieee80211_local and for 840 * the driver's private data 841 * 842 * In memory it'll be like this: 843 * 844 * +-------------------------+ 845 * | struct wiphy | 846 * +-------------------------+ 847 * | struct ieee80211_local | 848 * +-------------------------+ 849 * | driver's private data | 850 * +-------------------------+ 851 * 852 */ 853 priv_size = ALIGN(sizeof(*local), NETDEV_ALIGN) + priv_data_len; 854 855 wiphy = wiphy_new_nm(&mac80211_config_ops, priv_size, requested_name); 856 857 if (!wiphy) 858 return NULL; 859 860 wiphy->mgmt_stypes = ieee80211_default_mgmt_stypes; 861 862 wiphy->privid = mac80211_wiphy_privid; 863 864 wiphy->flags |= WIPHY_FLAG_NETNS_OK | 865 WIPHY_FLAG_4ADDR_AP | 866 WIPHY_FLAG_4ADDR_STATION | 867 WIPHY_FLAG_REPORTS_OBSS | 868 WIPHY_FLAG_OFFCHAN_TX; 869 870 if (emulate_chanctx || ops->remain_on_channel) 871 wiphy->flags |= WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL; 872 873 wiphy->bss_param_support = WIPHY_BSS_PARAM_CTS_PROT | 874 WIPHY_BSS_PARAM_SHORT_PREAMBLE | 875 WIPHY_BSS_PARAM_SHORT_SLOT_TIME | 876 WIPHY_BSS_PARAM_BASIC_RATES | 877 WIPHY_BSS_PARAM_AP_ISOLATE | 878 WIPHY_BSS_PARAM_HT_OPMODE | 879 WIPHY_BSS_PARAM_P2P_CTWINDOW | 880 WIPHY_BSS_PARAM_P2P_OPPPS; 881 wiphy->features |= NL80211_FEATURE_SK_TX_STATUS | 882 NL80211_FEATURE_SAE | 883 NL80211_FEATURE_HT_IBSS | 884 NL80211_FEATURE_VIF_TXPOWER | 885 NL80211_FEATURE_MAC_ON_CREATE | 886 NL80211_FEATURE_USERSPACE_MPM | 887 NL80211_FEATURE_FULL_AP_CLIENT_STATE; 888 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_FILS_STA); 889 wiphy_ext_feature_set(wiphy, 890 NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211); 891 wiphy_ext_feature_set(wiphy, 892 NL80211_EXT_FEATURE_CONTROL_PORT_NO_PREAUTH); 893 wiphy_ext_feature_set(wiphy, 894 NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211_TX_STATUS); 895 wiphy_ext_feature_set(wiphy, 896 NL80211_EXT_FEATURE_SCAN_FREQ_KHZ); 897 wiphy_ext_feature_set(wiphy, 898 NL80211_EXT_FEATURE_POWERED_ADDR_CHANGE); 899 900 if (!ops->hw_scan) { 901 wiphy->features |= NL80211_FEATURE_LOW_PRIORITY_SCAN | 902 NL80211_FEATURE_AP_SCAN; 903 /* 904 * if the driver behaves correctly using the probe request 905 * (template) from mac80211, then both of these should be 906 * supported even with hw scan - but let drivers opt in. 907 */ 908 wiphy_ext_feature_set(wiphy, 909 NL80211_EXT_FEATURE_SCAN_RANDOM_SN); 910 wiphy_ext_feature_set(wiphy, 911 NL80211_EXT_FEATURE_SCAN_MIN_PREQ_CONTENT); 912 } 913 914 if (!ops->set_key) { 915 wiphy->flags |= WIPHY_FLAG_IBSS_RSN; 916 wiphy_ext_feature_set(wiphy, 917 NL80211_EXT_FEATURE_SPP_AMSDU_SUPPORT); 918 } 919 920 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_TXQS); 921 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_RRM); 922 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_IEEE8021X_AUTH); 923 924 wiphy->bss_priv_size = sizeof(struct ieee80211_bss); 925 926 local = wiphy_priv(wiphy); 927 928 if (sta_info_init(local)) 929 goto err_free; 930 931 local->hw.wiphy = wiphy; 932 933 local->hw.priv = (char *)local + ALIGN(sizeof(*local), NETDEV_ALIGN); 934 935 local->ops = ops; 936 local->emulate_chanctx = emulate_chanctx; 937 938 if (emulate_chanctx) 939 ieee80211_hw_set(&local->hw, CHANCTX_STA_CSA); 940 941 /* 942 * We need a bit of data queued to build aggregates properly, so 943 * instruct the TCP stack to allow more than a single ms of data 944 * to be queued in the stack. The value is a bit-shift of 1 945 * second, so 7 is ~8ms of queued data. Only affects local TCP 946 * sockets. 947 * This is the default, anyhow - drivers may need to override it 948 * for local reasons (longer buffers, longer completion time, or 949 * similar). 950 */ 951 local->hw.tx_sk_pacing_shift = 7; 952 953 /* set up some defaults */ 954 local->hw.queues = 1; 955 local->hw.max_rates = 1; 956 local->hw.max_report_rates = 0; 957 local->hw.max_rx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF_HT; 958 local->hw.max_tx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF_HT; 959 local->hw.offchannel_tx_hw_queue = IEEE80211_INVAL_HW_QUEUE; 960 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long; 961 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short; 962 local->hw.radiotap_mcs_details = IEEE80211_RADIOTAP_MCS_HAVE_MCS | 963 IEEE80211_RADIOTAP_MCS_HAVE_GI | 964 IEEE80211_RADIOTAP_MCS_HAVE_BW; 965 local->hw.radiotap_vht_details = IEEE80211_RADIOTAP_VHT_KNOWN_GI | 966 IEEE80211_RADIOTAP_VHT_KNOWN_BANDWIDTH; 967 local->hw.uapsd_queues = IEEE80211_DEFAULT_UAPSD_QUEUES; 968 local->hw.uapsd_max_sp_len = IEEE80211_DEFAULT_MAX_SP_LEN; 969 local->hw.max_mtu = IEEE80211_MAX_DATA_LEN; 970 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL; 971 wiphy->ht_capa_mod_mask = &mac80211_ht_capa_mod_mask; 972 wiphy->vht_capa_mod_mask = &mac80211_vht_capa_mod_mask; 973 974 local->ext_capa[7] = WLAN_EXT_CAPA8_OPMODE_NOTIF; 975 976 wiphy->extended_capabilities = local->ext_capa; 977 wiphy->extended_capabilities_mask = local->ext_capa; 978 wiphy->extended_capabilities_len = 979 ARRAY_SIZE(local->ext_capa); 980 981 INIT_LIST_HEAD(&local->interfaces); 982 INIT_LIST_HEAD(&local->mon_list); 983 984 __hw_addr_init(&local->mc_list); 985 986 mutex_init(&local->iflist_mtx); 987 spin_lock_init(&local->filter_lock); 988 spin_lock_init(&local->rx_path_lock); 989 spin_lock_init(&local->queue_stop_reason_lock); 990 991 for (i = 0; i < IEEE80211_NUM_ACS; i++) { 992 INIT_LIST_HEAD(&local->active_txqs[i]); 993 spin_lock_init(&local->active_txq_lock[i]); 994 local->aql_txq_limit_low[i] = IEEE80211_DEFAULT_AQL_TXQ_LIMIT_L; 995 local->aql_txq_limit_high[i] = 996 IEEE80211_DEFAULT_AQL_TXQ_LIMIT_H; 997 atomic_set(&local->aql_ac_pending_airtime[i], 0); 998 } 999 1000 local->airtime_flags = AIRTIME_USE_TX | AIRTIME_USE_RX; 1001 local->aql_threshold = IEEE80211_AQL_THRESHOLD; 1002 atomic_set(&local->aql_total_pending_airtime, 0); 1003 1004 spin_lock_init(&local->handle_wake_tx_queue_lock); 1005 1006 INIT_LIST_HEAD(&local->chanctx_list); 1007 1008 wiphy_delayed_work_init(&local->scan_work, ieee80211_scan_work); 1009 1010 INIT_WORK(&local->restart_work, ieee80211_restart_work); 1011 1012 wiphy_work_init(&local->radar_detected_work, 1013 ieee80211_dfs_radar_detected_work); 1014 1015 wiphy_work_init(&local->reconfig_filter, ieee80211_reconfig_filter); 1016 1017 wiphy_work_init(&local->dynamic_ps_enable_work, 1018 ieee80211_dynamic_ps_enable_work); 1019 wiphy_work_init(&local->dynamic_ps_disable_work, 1020 ieee80211_dynamic_ps_disable_work); 1021 timer_setup(&local->dynamic_ps_timer, ieee80211_dynamic_ps_timer, 0); 1022 1023 wiphy_work_init(&local->sched_scan_stopped_work, 1024 ieee80211_sched_scan_stopped_work); 1025 1026 spin_lock_init(&local->ack_status_lock); 1027 idr_init(&local->ack_status_frames); 1028 1029 for (i = 0; i < IEEE80211_MAX_QUEUES; i++) { 1030 skb_queue_head_init(&local->pending[i]); 1031 atomic_set(&local->agg_queue_stop[i], 0); 1032 } 1033 tasklet_setup(&local->tx_pending_tasklet, ieee80211_tx_pending); 1034 tasklet_setup(&local->wake_txqs_tasklet, ieee80211_wake_txqs); 1035 tasklet_setup(&local->tasklet, ieee80211_tasklet_handler); 1036 1037 skb_queue_head_init(&local->skb_queue); 1038 skb_queue_head_init(&local->skb_queue_unreliable); 1039 1040 ieee80211_alloc_led_names(local); 1041 1042 ieee80211_roc_setup(local); 1043 1044 local->hw.radiotap_timestamp.units_pos = -1; 1045 local->hw.radiotap_timestamp.accuracy = -1; 1046 1047 return &local->hw; 1048 err_free: 1049 wiphy_free(wiphy); 1050 return NULL; 1051 } 1052 EXPORT_SYMBOL(ieee80211_alloc_hw_nm); 1053 1054 static int ieee80211_init_cipher_suites(struct ieee80211_local *local) 1055 { 1056 bool have_mfp = ieee80211_hw_check(&local->hw, MFP_CAPABLE); 1057 static const u32 cipher_suites[] = { 1058 /* keep WEP and TKIP first, they may be removed below */ 1059 WLAN_CIPHER_SUITE_WEP40, 1060 WLAN_CIPHER_SUITE_WEP104, 1061 WLAN_CIPHER_SUITE_TKIP, 1062 WLAN_CIPHER_SUITE_CCMP, 1063 WLAN_CIPHER_SUITE_CCMP_256, 1064 WLAN_CIPHER_SUITE_GCMP, 1065 WLAN_CIPHER_SUITE_GCMP_256, 1066 1067 /* keep last -- depends on hw flags! */ 1068 WLAN_CIPHER_SUITE_AES_CMAC, 1069 WLAN_CIPHER_SUITE_BIP_CMAC_256, 1070 WLAN_CIPHER_SUITE_BIP_GMAC_128, 1071 WLAN_CIPHER_SUITE_BIP_GMAC_256, 1072 }; 1073 1074 if (ieee80211_hw_check(&local->hw, SW_CRYPTO_CONTROL) && fips_enabled) { 1075 dev_err(local->hw.wiphy->dev.parent, 1076 "Drivers with SW_CRYPTO_CONTROL cannot work with FIPS\n"); 1077 return -EINVAL; 1078 } 1079 1080 if (WARN_ON(ieee80211_hw_check(&local->hw, SW_CRYPTO_CONTROL) && 1081 !local->hw.wiphy->cipher_suites)) 1082 return -EINVAL; 1083 1084 if (fips_enabled || !local->hw.wiphy->cipher_suites) { 1085 /* assign the (software supported and perhaps offloaded) 1086 * cipher suites 1087 */ 1088 local->hw.wiphy->cipher_suites = cipher_suites; 1089 local->hw.wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites); 1090 1091 if (!have_mfp) 1092 local->hw.wiphy->n_cipher_suites -= 4; 1093 1094 /* FIPS does not permit the use of RC4 */ 1095 if (fips_enabled) { 1096 local->hw.wiphy->cipher_suites += 3; 1097 local->hw.wiphy->n_cipher_suites -= 3; 1098 } 1099 } 1100 1101 return 0; 1102 } 1103 1104 static bool 1105 ieee80211_ifcomb_check(const struct ieee80211_iface_combination *c, int n_comb) 1106 { 1107 int i, j; 1108 1109 for (i = 0; i < n_comb; i++, c++) { 1110 /* DFS is not supported with multi-channel combinations yet */ 1111 if (c->radar_detect_widths && 1112 c->num_different_channels > 1) 1113 return false; 1114 1115 /* mac80211 doesn't support more than one IBSS interface */ 1116 for (j = 0; j < c->n_limits; j++) 1117 if ((c->limits[j].types & BIT(NL80211_IFTYPE_ADHOC)) && 1118 c->limits[j].max > 1) 1119 return false; 1120 } 1121 1122 return true; 1123 } 1124 1125 static void ieee80211_create_default_chandef(struct cfg80211_chan_def *chandef, 1126 struct ieee80211_channel *chan) 1127 { 1128 *chandef = (struct cfg80211_chan_def) { 1129 .chan = chan, 1130 .width = chan->band == NL80211_BAND_S1GHZ ? 1131 NL80211_CHAN_WIDTH_1 : 1132 NL80211_CHAN_WIDTH_20_NOHT, 1133 .center_freq1 = chan->center_freq, 1134 .freq1_offset = chan->freq_offset, 1135 }; 1136 } 1137 1138 int ieee80211_register_hw(struct ieee80211_hw *hw) 1139 { 1140 struct ieee80211_local *local = hw_to_local(hw); 1141 int result, i; 1142 enum nl80211_band band; 1143 int channels, max_bitrates; 1144 bool supp_ht, supp_vht, supp_he, supp_eht, supp_s1g, supp_uhr; 1145 struct cfg80211_chan_def dflt_chandef = {}; 1146 1147 if (ieee80211_hw_check(hw, QUEUE_CONTROL) && 1148 (local->hw.offchannel_tx_hw_queue == IEEE80211_INVAL_HW_QUEUE || 1149 local->hw.offchannel_tx_hw_queue >= local->hw.queues)) 1150 return -EINVAL; 1151 1152 if ((hw->wiphy->features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH) && 1153 (!local->ops->tdls_channel_switch || 1154 !local->ops->tdls_cancel_channel_switch || 1155 !local->ops->tdls_recv_channel_switch)) 1156 return -EOPNOTSUPP; 1157 1158 if (WARN_ON(ieee80211_hw_check(hw, SUPPORTS_TX_FRAG) && 1159 !local->ops->set_frag_threshold)) 1160 return -EINVAL; 1161 1162 if (WARN_ON(local->hw.wiphy->interface_modes & 1163 BIT(NL80211_IFTYPE_NAN) && 1164 ((!local->ops->start_nan || !local->ops->stop_nan) || 1165 (local->hw.wiphy->nan_capa.flags & WIPHY_NAN_FLAGS_USERSPACE_DE && 1166 (local->ops->add_nan_func || local->ops->del_nan_func))))) 1167 return -EINVAL; 1168 1169 if (hw->wiphy->flags & WIPHY_FLAG_SUPPORTS_MLO) { 1170 /* 1171 * For drivers capable of doing MLO, assume modern driver 1172 * or firmware facilities, so software doesn't have to do 1173 * as much, e.g. monitoring beacons would be hard if we 1174 * might not even know which link is active at which time. 1175 */ 1176 if (WARN_ON(local->emulate_chanctx)) 1177 return -EINVAL; 1178 1179 if (WARN_ON(!local->ops->link_info_changed)) 1180 return -EINVAL; 1181 1182 if (WARN_ON(!ieee80211_hw_check(hw, HAS_RATE_CONTROL))) 1183 return -EINVAL; 1184 1185 if (WARN_ON(!ieee80211_hw_check(hw, AMPDU_AGGREGATION))) 1186 return -EINVAL; 1187 1188 if (WARN_ON(ieee80211_hw_check(hw, HOST_BROADCAST_PS_BUFFERING))) 1189 return -EINVAL; 1190 1191 if (WARN_ON(ieee80211_hw_check(hw, SUPPORTS_PS) && 1192 (!ieee80211_hw_check(hw, SUPPORTS_DYNAMIC_PS) || 1193 ieee80211_hw_check(hw, PS_NULLFUNC_STACK)))) 1194 return -EINVAL; 1195 1196 if (WARN_ON(!ieee80211_hw_check(hw, MFP_CAPABLE))) 1197 return -EINVAL; 1198 1199 if (WARN_ON(ieee80211_hw_check(hw, NEED_DTIM_BEFORE_ASSOC))) 1200 return -EINVAL; 1201 1202 if (WARN_ON(ieee80211_hw_check(hw, TIMING_BEACON_ONLY))) 1203 return -EINVAL; 1204 1205 if (WARN_ON(!ieee80211_hw_check(hw, AP_LINK_PS))) 1206 return -EINVAL; 1207 } 1208 1209 #ifdef CONFIG_PM 1210 if (hw->wiphy->wowlan && (!local->ops->suspend || !local->ops->resume)) 1211 return -EINVAL; 1212 #endif 1213 1214 if (local->emulate_chanctx) { 1215 for (i = 0; i < local->hw.wiphy->n_iface_combinations; i++) { 1216 const struct ieee80211_iface_combination *comb; 1217 1218 comb = &local->hw.wiphy->iface_combinations[i]; 1219 1220 if (comb->num_different_channels > 1) 1221 return -EINVAL; 1222 } 1223 } 1224 1225 if (hw->wiphy->n_radio) { 1226 for (i = 0; i < hw->wiphy->n_radio; i++) { 1227 const struct wiphy_radio *radio = &hw->wiphy->radio[i]; 1228 1229 if (!ieee80211_ifcomb_check(radio->iface_combinations, 1230 radio->n_iface_combinations)) 1231 return -EINVAL; 1232 } 1233 } else { 1234 if (!ieee80211_ifcomb_check(hw->wiphy->iface_combinations, 1235 hw->wiphy->n_iface_combinations)) 1236 return -EINVAL; 1237 } 1238 1239 /* Only HW csum features are currently compatible with mac80211 */ 1240 if (WARN_ON(hw->netdev_features & ~MAC80211_SUPPORTED_FEATURES)) 1241 return -EINVAL; 1242 1243 if (hw->max_report_rates == 0) 1244 hw->max_report_rates = hw->max_rates; 1245 1246 local->rx_chains = 1; 1247 1248 /* 1249 * generic code guarantees at least one band, 1250 * set this very early because much code assumes 1251 * that hw.conf.channel is assigned 1252 */ 1253 channels = 0; 1254 max_bitrates = 0; 1255 supp_ht = false; 1256 supp_vht = false; 1257 supp_he = false; 1258 supp_eht = false; 1259 supp_s1g = false; 1260 supp_uhr = false; 1261 for (band = 0; band < NUM_NL80211_BANDS; band++) { 1262 const struct ieee80211_sband_iftype_data *iftd; 1263 struct ieee80211_supported_band *sband; 1264 1265 sband = local->hw.wiphy->bands[band]; 1266 if (!sband) 1267 continue; 1268 1269 if (!dflt_chandef.chan) { 1270 /* 1271 * Assign the first enabled channel to dflt_chandef 1272 * from the list of channels. For S1G interfaces 1273 * ensure it can be used as a primary. 1274 */ 1275 for (i = 0; i < sband->n_channels; i++) 1276 if (!(sband->channels[i].flags & 1277 (IEEE80211_CHAN_DISABLED | 1278 IEEE80211_CHAN_S1G_NO_PRIMARY))) 1279 break; 1280 /* if none found then use the first anyway */ 1281 if (i == sband->n_channels) 1282 i = 0; 1283 ieee80211_create_default_chandef(&dflt_chandef, 1284 &sband->channels[i]); 1285 /* init channel we're on */ 1286 local->monitor_chanreq.oper = dflt_chandef; 1287 if (local->emulate_chanctx) { 1288 local->dflt_chandef = dflt_chandef; 1289 local->hw.conf.chandef = dflt_chandef; 1290 } 1291 } 1292 1293 channels += sband->n_channels; 1294 1295 /* 1296 * Due to the way the aggregation code handles this and it 1297 * being an HT capability, we can't really support delayed 1298 * BA in MLO (yet). 1299 */ 1300 if (WARN_ON(sband->ht_cap.ht_supported && 1301 (sband->ht_cap.cap & IEEE80211_HT_CAP_DELAY_BA) && 1302 hw->wiphy->flags & WIPHY_FLAG_SUPPORTS_MLO)) 1303 return -EINVAL; 1304 1305 if (max_bitrates < sband->n_bitrates) 1306 max_bitrates = sband->n_bitrates; 1307 supp_ht = supp_ht || sband->ht_cap.ht_supported; 1308 supp_vht = supp_vht || sband->vht_cap.vht_supported; 1309 supp_s1g = supp_s1g || sband->s1g_cap.s1g; 1310 1311 for_each_sband_iftype_data(sband, i, iftd) { 1312 u8 he_40_mhz_cap; 1313 1314 supp_he = supp_he || iftd->he_cap.has_he; 1315 supp_eht = supp_eht || iftd->eht_cap.has_eht; 1316 supp_uhr = supp_uhr || iftd->uhr_cap.has_uhr; 1317 1318 if (band == NL80211_BAND_2GHZ) 1319 he_40_mhz_cap = 1320 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_IN_2G; 1321 else 1322 he_40_mhz_cap = 1323 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G; 1324 1325 /* currently no support for HE client where HT has 40 MHz but not HT */ 1326 if (iftd->he_cap.has_he && 1327 iftd->types_mask & (BIT(NL80211_IFTYPE_STATION) | 1328 BIT(NL80211_IFTYPE_P2P_CLIENT)) && 1329 sband->ht_cap.ht_supported && 1330 sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 && 1331 !(iftd->he_cap.he_cap_elem.phy_cap_info[0] & he_40_mhz_cap)) 1332 return -EINVAL; 1333 1334 /* no support for per-band vendor elems with MLO */ 1335 if (WARN_ON(iftd->vendor_elems.len && 1336 hw->wiphy->flags & WIPHY_FLAG_SUPPORTS_MLO)) 1337 return -EINVAL; 1338 } 1339 1340 /* HT, VHT, HE require QoS, thus >= 4 queues */ 1341 if (WARN_ON(local->hw.queues < IEEE80211_NUM_ACS && 1342 (supp_ht || supp_vht || supp_he))) 1343 return -EINVAL; 1344 1345 /* EHT requires HE support */ 1346 if (WARN_ON(supp_eht && !supp_he)) 1347 return -EINVAL; 1348 1349 /* UHR requires EHT support */ 1350 if (WARN_ON(supp_uhr && !supp_eht)) 1351 return -EINVAL; 1352 1353 if (!sband->ht_cap.ht_supported) 1354 continue; 1355 1356 /* TODO: consider VHT for RX chains, hopefully it's the same */ 1357 local->rx_chains = 1358 max(ieee80211_mcs_to_chains(&sband->ht_cap.mcs), 1359 local->rx_chains); 1360 1361 /* no need to mask, SM_PS_DISABLED has all bits set */ 1362 sband->ht_cap.cap |= WLAN_HT_CAP_SM_PS_DISABLED << 1363 IEEE80211_HT_CAP_SM_PS_SHIFT; 1364 } 1365 1366 /* if low-level driver supports AP, we also support VLAN. 1367 * drivers advertising SW_CRYPTO_CONTROL should enable AP_VLAN 1368 * based on their support to transmit SW encrypted packets. 1369 */ 1370 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_AP) && 1371 !ieee80211_hw_check(&local->hw, SW_CRYPTO_CONTROL)) { 1372 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP_VLAN); 1373 hw->wiphy->software_iftypes |= BIT(NL80211_IFTYPE_AP_VLAN); 1374 } 1375 1376 /* mac80211 always supports monitor */ 1377 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR); 1378 hw->wiphy->software_iftypes |= BIT(NL80211_IFTYPE_MONITOR); 1379 1380 1381 local->int_scan_req = kzalloc_flex(*local->int_scan_req, channels, 1382 channels); 1383 if (!local->int_scan_req) 1384 return -ENOMEM; 1385 1386 eth_broadcast_addr(local->int_scan_req->bssid); 1387 1388 for (band = 0; band < NUM_NL80211_BANDS; band++) { 1389 if (!local->hw.wiphy->bands[band]) 1390 continue; 1391 local->int_scan_req->rates[band] = (u32) -1; 1392 } 1393 1394 #ifndef CONFIG_MAC80211_MESH 1395 /* mesh depends on Kconfig, but drivers should set it if they want */ 1396 local->hw.wiphy->interface_modes &= ~BIT(NL80211_IFTYPE_MESH_POINT); 1397 #endif 1398 1399 /* if the underlying driver supports mesh, mac80211 will (at least) 1400 * provide routing of mesh authentication frames to userspace */ 1401 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_MESH_POINT)) 1402 local->hw.wiphy->flags |= WIPHY_FLAG_MESH_AUTH; 1403 1404 /* mac80211 supports control port protocol changing */ 1405 local->hw.wiphy->flags |= WIPHY_FLAG_CONTROL_PORT_PROTOCOL; 1406 1407 if (ieee80211_hw_check(&local->hw, SIGNAL_DBM)) { 1408 local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM; 1409 } else if (ieee80211_hw_check(&local->hw, SIGNAL_UNSPEC)) { 1410 local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC; 1411 if (hw->max_signal <= 0) { 1412 result = -EINVAL; 1413 goto fail_workqueue; 1414 } 1415 } 1416 1417 /* Mac80211 and therefore all drivers using SW crypto only 1418 * are able to handle PTK rekeys and Extended Key ID. 1419 */ 1420 if (!local->ops->set_key) { 1421 wiphy_ext_feature_set(local->hw.wiphy, 1422 NL80211_EXT_FEATURE_CAN_REPLACE_PTK0); 1423 wiphy_ext_feature_set(local->hw.wiphy, 1424 NL80211_EXT_FEATURE_EXT_KEY_ID); 1425 } 1426 1427 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_ADHOC)) 1428 wiphy_ext_feature_set(local->hw.wiphy, 1429 NL80211_EXT_FEATURE_DEL_IBSS_STA); 1430 1431 /* 1432 * Calculate scan IE length -- we need this to alloc 1433 * memory and to subtract from the driver limit. It 1434 * includes the DS Params, (extended) supported rates, and HT 1435 * information -- SSID is the driver's responsibility. 1436 */ 1437 local->scan_ies_len = 4 + max_bitrates /* (ext) supp rates */ + 1438 3 /* DS Params */; 1439 if (supp_ht) 1440 local->scan_ies_len += 2 + sizeof(struct ieee80211_ht_cap); 1441 1442 if (supp_vht) 1443 local->scan_ies_len += 1444 2 + sizeof(struct ieee80211_vht_cap); 1445 1446 if (supp_s1g) 1447 local->scan_ies_len += 2 + sizeof(struct ieee80211_s1g_cap); 1448 1449 /* 1450 * HE cap element is variable in size - set len to allow max size */ 1451 if (supp_he) { 1452 local->scan_ies_len += 1453 3 + sizeof(struct ieee80211_he_cap_elem) + 1454 sizeof(struct ieee80211_he_mcs_nss_supp) + 1455 IEEE80211_HE_PPE_THRES_MAX_LEN; 1456 1457 if (supp_eht) 1458 local->scan_ies_len += 1459 3 + sizeof(struct ieee80211_eht_cap_elem) + 1460 sizeof(struct ieee80211_eht_mcs_nss_supp) + 1461 IEEE80211_EHT_PPE_THRES_MAX_LEN; 1462 } 1463 1464 if (supp_uhr) 1465 local->scan_ies_len += 1466 3 + sizeof(struct ieee80211_uhr_cap); 1467 1468 if (!local->ops->hw_scan) { 1469 /* For hw_scan, driver needs to set these up. */ 1470 local->hw.wiphy->max_scan_ssids = 4; 1471 local->hw.wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN; 1472 } 1473 1474 /* 1475 * If the driver supports any scan IEs, then assume the 1476 * limit includes the IEs mac80211 will add, otherwise 1477 * leave it at zero and let the driver sort it out; we 1478 * still pass our IEs to the driver but userspace will 1479 * not be allowed to in that case. 1480 */ 1481 if (local->hw.wiphy->max_scan_ie_len) 1482 local->hw.wiphy->max_scan_ie_len -= local->scan_ies_len; 1483 1484 result = ieee80211_init_cipher_suites(local); 1485 if (result < 0) 1486 goto fail_workqueue; 1487 1488 if (!local->ops->remain_on_channel) 1489 local->hw.wiphy->max_remain_on_channel_duration = 5000; 1490 1491 /* mac80211 based drivers don't support internal TDLS setup */ 1492 if (local->hw.wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS) 1493 local->hw.wiphy->flags |= WIPHY_FLAG_TDLS_EXTERNAL_SETUP; 1494 1495 /* mac80211 supports eCSA, if the driver supports STA CSA at all */ 1496 if (ieee80211_hw_check(&local->hw, CHANCTX_STA_CSA)) 1497 local->ext_capa[0] |= WLAN_EXT_CAPA1_EXT_CHANNEL_SWITCHING; 1498 1499 /* mac80211 supports multi BSSID, if the driver supports it */ 1500 if (ieee80211_hw_check(&local->hw, SUPPORTS_MULTI_BSSID)) { 1501 local->hw.wiphy->support_mbssid = true; 1502 if (ieee80211_hw_check(&local->hw, 1503 SUPPORTS_ONLY_HE_MULTI_BSSID)) 1504 local->hw.wiphy->support_only_he_mbssid = true; 1505 else 1506 local->ext_capa[2] |= 1507 WLAN_EXT_CAPA3_MULTI_BSSID_SUPPORT; 1508 } 1509 1510 local->hw.wiphy->max_num_csa_counters = IEEE80211_MAX_CNTDWN_COUNTERS_NUM; 1511 1512 /* 1513 * We use the number of queues for feature tests (QoS, HT) internally 1514 * so restrict them appropriately. 1515 */ 1516 if (hw->queues > IEEE80211_MAX_QUEUES) 1517 hw->queues = IEEE80211_MAX_QUEUES; 1518 1519 local->workqueue = 1520 alloc_ordered_workqueue("%s", 0, wiphy_name(local->hw.wiphy)); 1521 if (!local->workqueue) { 1522 result = -ENOMEM; 1523 goto fail_workqueue; 1524 } 1525 1526 /* 1527 * The hardware needs headroom for sending the frame, 1528 * and we need some headroom for passing the frame to monitor 1529 * interfaces, but never both at the same time. 1530 */ 1531 local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom, 1532 IEEE80211_TX_STATUS_HEADROOM); 1533 1534 /* 1535 * if the driver doesn't specify a max listen interval we 1536 * use 5 which should be a safe default 1537 */ 1538 if (local->hw.max_listen_interval == 0) 1539 local->hw.max_listen_interval = 5; 1540 1541 local->hw.conf.listen_interval = local->hw.max_listen_interval; 1542 1543 local->dynamic_ps_forced_timeout = -1; 1544 1545 if (!local->hw.max_nan_de_entries) 1546 local->hw.max_nan_de_entries = IEEE80211_MAX_NAN_INSTANCE_ID; 1547 1548 if (!local->hw.weight_multiplier) 1549 local->hw.weight_multiplier = 1; 1550 1551 ieee80211_wep_init(local); 1552 1553 local->hw.conf.flags = IEEE80211_CONF_IDLE; 1554 1555 ieee80211_led_init(local); 1556 1557 result = ieee80211_txq_setup_flows(local); 1558 if (result) 1559 goto fail_flows; 1560 1561 rtnl_lock(); 1562 result = ieee80211_init_rate_ctrl_alg(local, 1563 hw->rate_control_algorithm); 1564 rtnl_unlock(); 1565 if (result < 0) { 1566 wiphy_debug(local->hw.wiphy, 1567 "Failed to initialize rate control algorithm\n"); 1568 goto fail_rate; 1569 } 1570 1571 if (local->rate_ctrl) { 1572 clear_bit(IEEE80211_HW_SUPPORTS_VHT_EXT_NSS_BW, hw->flags); 1573 if (local->rate_ctrl->ops->capa & RATE_CTRL_CAPA_VHT_EXT_NSS_BW) 1574 ieee80211_hw_set(hw, SUPPORTS_VHT_EXT_NSS_BW); 1575 } 1576 1577 /* 1578 * If the VHT capabilities don't have IEEE80211_VHT_EXT_NSS_BW_CAPABLE, 1579 * or have it when we don't, copy the sband structure and set/clear it. 1580 * This is necessary because rate scaling algorithms could be switched 1581 * and have different support values. 1582 * Print a message so that in the common case the reallocation can be 1583 * avoided. 1584 */ 1585 BUILD_BUG_ON(NUM_NL80211_BANDS > 8 * sizeof(local->sband_allocated)); 1586 for (band = 0; band < NUM_NL80211_BANDS; band++) { 1587 struct ieee80211_supported_band *sband; 1588 bool local_cap, ie_cap; 1589 1590 local_cap = ieee80211_hw_check(hw, SUPPORTS_VHT_EXT_NSS_BW); 1591 1592 sband = local->hw.wiphy->bands[band]; 1593 if (!sband || !sband->vht_cap.vht_supported) 1594 continue; 1595 1596 ie_cap = !!(sband->vht_cap.vht_mcs.tx_highest & 1597 cpu_to_le16(IEEE80211_VHT_EXT_NSS_BW_CAPABLE)); 1598 1599 if (local_cap == ie_cap) 1600 continue; 1601 1602 sband = kmemdup(sband, sizeof(*sband), GFP_KERNEL); 1603 if (!sband) { 1604 result = -ENOMEM; 1605 goto fail_rate; 1606 } 1607 1608 wiphy_dbg(hw->wiphy, "copying sband (band %d) due to VHT EXT NSS BW flag\n", 1609 band); 1610 1611 sband->vht_cap.vht_mcs.tx_highest ^= 1612 cpu_to_le16(IEEE80211_VHT_EXT_NSS_BW_CAPABLE); 1613 1614 local->hw.wiphy->bands[band] = sband; 1615 local->sband_allocated |= BIT(band); 1616 } 1617 1618 /* 1619 * mac80211 supports EPPKE, if the driver supports (Re)Association 1620 * frame encryption 1621 */ 1622 if (wiphy_ext_feature_isset(local->hw.wiphy, 1623 NL80211_EXT_FEATURE_ASSOC_FRAME_ENCRYPTION)) 1624 wiphy_ext_feature_set(local->hw.wiphy, 1625 NL80211_EXT_FEATURE_EPPKE); 1626 1627 result = wiphy_register(local->hw.wiphy); 1628 if (result < 0) 1629 goto fail_wiphy_register; 1630 1631 debugfs_hw_add(local); 1632 rate_control_add_debugfs(local); 1633 1634 ieee80211_check_wbrf_support(local); 1635 1636 rtnl_lock(); 1637 wiphy_lock(hw->wiphy); 1638 1639 /* add one default STA interface if supported */ 1640 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_STATION) && 1641 !ieee80211_hw_check(hw, NO_AUTO_VIF)) { 1642 struct vif_params params = {0}; 1643 1644 result = ieee80211_if_add(local, "wlan%d", NET_NAME_ENUM, NULL, 1645 NL80211_IFTYPE_STATION, ¶ms); 1646 if (result) 1647 wiphy_warn(local->hw.wiphy, 1648 "Failed to add default virtual iface\n"); 1649 } 1650 1651 wiphy_unlock(hw->wiphy); 1652 rtnl_unlock(); 1653 1654 #ifdef CONFIG_INET 1655 local->ifa_notifier.notifier_call = ieee80211_ifa_changed; 1656 result = register_inetaddr_notifier(&local->ifa_notifier); 1657 if (result) 1658 goto fail_ifa; 1659 #endif 1660 1661 #if IS_ENABLED(CONFIG_IPV6) 1662 local->ifa6_notifier.notifier_call = ieee80211_ifa6_changed; 1663 result = register_inet6addr_notifier(&local->ifa6_notifier); 1664 if (result) 1665 goto fail_ifa6; 1666 #endif 1667 1668 return 0; 1669 1670 #if IS_ENABLED(CONFIG_IPV6) 1671 fail_ifa6: 1672 #ifdef CONFIG_INET 1673 unregister_inetaddr_notifier(&local->ifa_notifier); 1674 #endif 1675 #endif 1676 #if defined(CONFIG_INET) || defined(CONFIG_IPV6) 1677 fail_ifa: 1678 #endif 1679 wiphy_unregister(local->hw.wiphy); 1680 fail_wiphy_register: 1681 rtnl_lock(); 1682 rate_control_deinitialize(local); 1683 ieee80211_remove_interfaces(local); 1684 rtnl_unlock(); 1685 fail_rate: 1686 ieee80211_txq_teardown_flows(local); 1687 fail_flows: 1688 ieee80211_led_exit(local); 1689 destroy_workqueue(local->workqueue); 1690 fail_workqueue: 1691 kfree(local->int_scan_req); 1692 return result; 1693 } 1694 EXPORT_SYMBOL(ieee80211_register_hw); 1695 1696 void ieee80211_unregister_hw(struct ieee80211_hw *hw) 1697 { 1698 struct ieee80211_local *local = hw_to_local(hw); 1699 1700 tasklet_kill(&local->tx_pending_tasklet); 1701 tasklet_kill(&local->tasklet); 1702 1703 #ifdef CONFIG_INET 1704 unregister_inetaddr_notifier(&local->ifa_notifier); 1705 #endif 1706 #if IS_ENABLED(CONFIG_IPV6) 1707 unregister_inet6addr_notifier(&local->ifa6_notifier); 1708 #endif 1709 1710 rtnl_lock(); 1711 1712 /* 1713 * At this point, interface list manipulations are fine 1714 * because the driver cannot be handing us frames any 1715 * more and the tasklet is killed. 1716 */ 1717 ieee80211_remove_interfaces(local); 1718 1719 ieee80211_txq_teardown_flows(local); 1720 1721 wiphy_lock(local->hw.wiphy); 1722 wiphy_delayed_work_cancel(local->hw.wiphy, &local->roc_work); 1723 wiphy_work_cancel(local->hw.wiphy, &local->reconfig_filter); 1724 wiphy_work_cancel(local->hw.wiphy, &local->sched_scan_stopped_work); 1725 wiphy_work_cancel(local->hw.wiphy, &local->radar_detected_work); 1726 wiphy_unlock(local->hw.wiphy); 1727 rtnl_unlock(); 1728 1729 cancel_work_sync(&local->restart_work); 1730 1731 ieee80211_clear_tx_pending(local); 1732 rate_control_deinitialize(local); 1733 1734 if (skb_queue_len(&local->skb_queue) || 1735 skb_queue_len(&local->skb_queue_unreliable)) 1736 wiphy_warn(local->hw.wiphy, "skb_queue not empty\n"); 1737 skb_queue_purge(&local->skb_queue); 1738 skb_queue_purge(&local->skb_queue_unreliable); 1739 1740 wiphy_unregister(local->hw.wiphy); 1741 destroy_workqueue(local->workqueue); 1742 ieee80211_led_exit(local); 1743 kfree(local->int_scan_req); 1744 } 1745 EXPORT_SYMBOL(ieee80211_unregister_hw); 1746 1747 static int ieee80211_free_ack_frame(int id, void *p, void *data) 1748 { 1749 WARN_ONCE(1, "Have pending ack frames!\n"); 1750 kfree_skb(p); 1751 return 0; 1752 } 1753 1754 void ieee80211_free_hw(struct ieee80211_hw *hw) 1755 { 1756 struct ieee80211_local *local = hw_to_local(hw); 1757 enum nl80211_band band; 1758 1759 mutex_destroy(&local->iflist_mtx); 1760 1761 idr_for_each(&local->ack_status_frames, 1762 ieee80211_free_ack_frame, NULL); 1763 idr_destroy(&local->ack_status_frames); 1764 1765 sta_info_stop(local); 1766 1767 ieee80211_free_led_names(local); 1768 1769 for (band = 0; band < NUM_NL80211_BANDS; band++) { 1770 if (!(local->sband_allocated & BIT(band))) 1771 continue; 1772 kfree(local->hw.wiphy->bands[band]); 1773 } 1774 1775 wiphy_free(local->hw.wiphy); 1776 } 1777 EXPORT_SYMBOL(ieee80211_free_hw); 1778 #define V(x) #x, 1779 static const char * const drop_reasons_unusable[] = { 1780 [0] = "RX_DROP_UNUSABLE", 1781 MAC80211_DROP_REASONS_UNUSABLE(V) 1782 #undef V 1783 }; 1784 1785 static struct drop_reason_list drop_reason_list_unusable = { 1786 .reasons = drop_reasons_unusable, 1787 .n_reasons = ARRAY_SIZE(drop_reasons_unusable), 1788 }; 1789 1790 static int __init ieee80211_init(void) 1791 { 1792 struct sk_buff *skb; 1793 int ret; 1794 1795 BUILD_BUG_ON(sizeof(struct ieee80211_tx_info) > sizeof(skb->cb)); 1796 BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, driver_data) + 1797 IEEE80211_TX_INFO_DRIVER_DATA_SIZE > sizeof(skb->cb)); 1798 1799 ret = rc80211_minstrel_init(); 1800 if (ret) 1801 return ret; 1802 1803 ret = ieee80211_iface_init(); 1804 if (ret) 1805 goto err_netdev; 1806 1807 drop_reasons_register_subsys(SKB_DROP_REASON_SUBSYS_MAC80211_UNUSABLE, 1808 &drop_reason_list_unusable); 1809 1810 return 0; 1811 err_netdev: 1812 rc80211_minstrel_exit(); 1813 1814 return ret; 1815 } 1816 1817 static void __exit ieee80211_exit(void) 1818 { 1819 rc80211_minstrel_exit(); 1820 1821 ieee80211s_stop(); 1822 1823 ieee80211_iface_exit(); 1824 1825 drop_reasons_unregister_subsys(SKB_DROP_REASON_SUBSYS_MAC80211_UNUSABLE); 1826 1827 rcu_barrier(); 1828 } 1829 1830 1831 subsys_initcall(ieee80211_init); 1832 module_exit(ieee80211_exit); 1833 1834 MODULE_DESCRIPTION("IEEE 802.11 subsystem"); 1835 MODULE_LICENSE("GPL"); 1836