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 = ifa->ifa_dev; 592 593 ifmgd = &sdata->u.mgd; 594 595 /* 596 * The nested here is needed to convince lockdep that this is 597 * all OK. Yes, we lock the wiphy mutex here while we already 598 * hold the notifier rwsem, that's the normal case. And yes, 599 * we also acquire the notifier rwsem again when unregistering 600 * a netdev while we already hold the wiphy mutex, so it does 601 * look like a typical ABBA deadlock. 602 * 603 * However, both of these things happen with the RTNL held 604 * already. Therefore, they can't actually happen, since the 605 * lock orders really are ABC and ACB, which is fine due to 606 * the RTNL (A). 607 * 608 * We still need to prevent recursion, which is accomplished 609 * by the !wdev->registered check above. 610 */ 611 mutex_lock_nested(&local->hw.wiphy->mtx, 1); 612 __acquire(&local->hw.wiphy->mtx); 613 614 /* Copy the addresses to the vif config list */ 615 ifa = rtnl_dereference(idev->ifa_list); 616 while (ifa) { 617 if (c < IEEE80211_BSS_ARP_ADDR_LIST_LEN) 618 vif_cfg->arp_addr_list[c] = ifa->ifa_address; 619 ifa = rtnl_dereference(ifa->ifa_next); 620 c++; 621 } 622 623 vif_cfg->arp_addr_cnt = c; 624 625 /* Configure driver only if associated (which also implies it is up) */ 626 if (ifmgd->associated) 627 ieee80211_vif_cfg_change_notify(sdata, BSS_CHANGED_ARP_FILTER); 628 629 wiphy_unlock(local->hw.wiphy); 630 631 return NOTIFY_OK; 632 } 633 #endif 634 635 #if IS_ENABLED(CONFIG_IPV6) 636 static int ieee80211_ifa6_changed(struct notifier_block *nb, 637 unsigned long data, void *arg) 638 { 639 struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)arg; 640 struct inet6_dev *idev = ifa->idev; 641 struct net_device *ndev = ifa->idev->dev; 642 struct ieee80211_local *local = 643 container_of(nb, struct ieee80211_local, ifa6_notifier); 644 struct wireless_dev *wdev = ndev->ieee80211_ptr; 645 struct ieee80211_sub_if_data *sdata; 646 647 /* Make sure it's our interface that got changed */ 648 if (!wdev || wdev->wiphy != local->hw.wiphy) 649 return NOTIFY_DONE; 650 651 sdata = IEEE80211_DEV_TO_SUB_IF(ndev); 652 653 /* 654 * For now only support station mode. This is mostly because 655 * doing AP would have to handle AP_VLAN in some way ... 656 */ 657 if (sdata->vif.type != NL80211_IFTYPE_STATION) 658 return NOTIFY_DONE; 659 660 drv_ipv6_addr_change(local, sdata, idev); 661 662 return NOTIFY_OK; 663 } 664 #endif 665 666 /* There isn't a lot of sense in it, but you can transmit anything you like */ 667 static const struct ieee80211_txrx_stypes 668 ieee80211_default_mgmt_stypes[NUM_NL80211_IFTYPES] = { 669 [NL80211_IFTYPE_ADHOC] = { 670 .tx = 0xffff, 671 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | 672 BIT(IEEE80211_STYPE_AUTH >> 4) | 673 BIT(IEEE80211_STYPE_DEAUTH >> 4) | 674 BIT(IEEE80211_STYPE_PROBE_REQ >> 4), 675 }, 676 [NL80211_IFTYPE_STATION] = { 677 .tx = 0xffff, 678 /* 679 * To support Pre Association Security Negotiation (PASN) while 680 * already associated to one AP, allow user space to register to 681 * Rx authentication frames, so that the user space logic would 682 * be able to receive/handle authentication frames from a 683 * different AP as part of PASN. 684 * It is expected that user space would intelligently register 685 * for Rx authentication frames, i.e., only when PASN is used 686 * and configure a match filter only for PASN authentication 687 * algorithm, as otherwise the MLME functionality of mac80211 688 * would be broken. 689 */ 690 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | 691 BIT(IEEE80211_STYPE_AUTH >> 4) | 692 BIT(IEEE80211_STYPE_PROBE_REQ >> 4), 693 }, 694 [NL80211_IFTYPE_AP] = { 695 .tx = 0xffff, 696 .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) | 697 BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) | 698 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) | 699 BIT(IEEE80211_STYPE_DISASSOC >> 4) | 700 BIT(IEEE80211_STYPE_AUTH >> 4) | 701 BIT(IEEE80211_STYPE_DEAUTH >> 4) | 702 BIT(IEEE80211_STYPE_ACTION >> 4), 703 }, 704 [NL80211_IFTYPE_AP_VLAN] = { 705 /* copy AP */ 706 .tx = 0xffff, 707 .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) | 708 BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) | 709 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) | 710 BIT(IEEE80211_STYPE_DISASSOC >> 4) | 711 BIT(IEEE80211_STYPE_AUTH >> 4) | 712 BIT(IEEE80211_STYPE_DEAUTH >> 4) | 713 BIT(IEEE80211_STYPE_ACTION >> 4), 714 }, 715 [NL80211_IFTYPE_P2P_CLIENT] = { 716 .tx = 0xffff, 717 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | 718 BIT(IEEE80211_STYPE_PROBE_REQ >> 4), 719 }, 720 [NL80211_IFTYPE_P2P_GO] = { 721 .tx = 0xffff, 722 .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) | 723 BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) | 724 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) | 725 BIT(IEEE80211_STYPE_DISASSOC >> 4) | 726 BIT(IEEE80211_STYPE_AUTH >> 4) | 727 BIT(IEEE80211_STYPE_DEAUTH >> 4) | 728 BIT(IEEE80211_STYPE_ACTION >> 4), 729 }, 730 [NL80211_IFTYPE_MESH_POINT] = { 731 .tx = 0xffff, 732 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | 733 BIT(IEEE80211_STYPE_AUTH >> 4) | 734 BIT(IEEE80211_STYPE_DEAUTH >> 4), 735 }, 736 [NL80211_IFTYPE_P2P_DEVICE] = { 737 .tx = 0xffff, 738 /* 739 * To support P2P PASN pairing let user space register to rx 740 * also AUTH frames on P2P device interface. 741 */ 742 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | 743 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) | 744 BIT(IEEE80211_STYPE_AUTH >> 4), 745 }, 746 [NL80211_IFTYPE_NAN] = { 747 .tx = 0xffff, 748 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | 749 BIT(IEEE80211_STYPE_AUTH >> 4), 750 }, 751 [NL80211_IFTYPE_NAN_DATA] = { 752 .tx = 0xffff, 753 .rx = BIT(IEEE80211_STYPE_ACTION >> 4), 754 }, 755 }; 756 757 static const struct ieee80211_ht_cap mac80211_ht_capa_mod_mask = { 758 .ampdu_params_info = IEEE80211_HT_AMPDU_PARM_FACTOR | 759 IEEE80211_HT_AMPDU_PARM_DENSITY, 760 761 .cap_info = cpu_to_le16(IEEE80211_HT_CAP_SUP_WIDTH_20_40 | 762 IEEE80211_HT_CAP_MAX_AMSDU | 763 IEEE80211_HT_CAP_SGI_20 | 764 IEEE80211_HT_CAP_SGI_40 | 765 IEEE80211_HT_CAP_TX_STBC | 766 IEEE80211_HT_CAP_RX_STBC | 767 IEEE80211_HT_CAP_LDPC_CODING | 768 IEEE80211_HT_CAP_40MHZ_INTOLERANT), 769 .mcs = { 770 .rx_mask = { 0xff, 0xff, 0xff, 0xff, 0xff, 771 0xff, 0xff, 0xff, 0xff, 0xff, }, 772 }, 773 }; 774 775 static const struct ieee80211_vht_cap mac80211_vht_capa_mod_mask = { 776 .vht_cap_info = 777 cpu_to_le32(IEEE80211_VHT_CAP_RXLDPC | 778 IEEE80211_VHT_CAP_SHORT_GI_80 | 779 IEEE80211_VHT_CAP_SHORT_GI_160 | 780 IEEE80211_VHT_CAP_RXSTBC_MASK | 781 IEEE80211_VHT_CAP_TXSTBC | 782 IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE | 783 IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE | 784 IEEE80211_VHT_CAP_TX_ANTENNA_PATTERN | 785 IEEE80211_VHT_CAP_RX_ANTENNA_PATTERN | 786 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK), 787 .supp_mcs = { 788 .rx_mcs_map = cpu_to_le16(~0), 789 .tx_mcs_map = cpu_to_le16(~0), 790 }, 791 }; 792 793 struct ieee80211_hw *ieee80211_alloc_hw_nm(size_t priv_data_len, 794 const struct ieee80211_ops *ops, 795 const char *requested_name) 796 { 797 struct ieee80211_local *local; 798 int priv_size, i; 799 struct wiphy *wiphy; 800 bool emulate_chanctx; 801 802 if (WARN_ON(!ops->tx || !ops->start || !ops->stop || !ops->config || 803 !ops->add_interface || !ops->remove_interface || 804 !ops->configure_filter || !ops->wake_tx_queue)) 805 return NULL; 806 807 if (WARN_ON(ops->sta_state && (ops->sta_add || ops->sta_remove))) 808 return NULL; 809 810 if (WARN_ON(!!ops->link_info_changed != !!ops->vif_cfg_changed || 811 (ops->link_info_changed && ops->bss_info_changed))) 812 return NULL; 813 814 /* check all or no channel context operations exist */ 815 if (ops->add_chanctx == ieee80211_emulate_add_chanctx && 816 ops->remove_chanctx == ieee80211_emulate_remove_chanctx && 817 ops->change_chanctx == ieee80211_emulate_change_chanctx) { 818 if (WARN_ON(ops->assign_vif_chanctx || 819 ops->unassign_vif_chanctx)) 820 return NULL; 821 emulate_chanctx = true; 822 } else { 823 if (WARN_ON(ops->add_chanctx == ieee80211_emulate_add_chanctx || 824 ops->remove_chanctx == ieee80211_emulate_remove_chanctx || 825 ops->change_chanctx == ieee80211_emulate_change_chanctx)) 826 return NULL; 827 if (WARN_ON(!ops->add_chanctx || 828 !ops->remove_chanctx || 829 !ops->change_chanctx || 830 !ops->assign_vif_chanctx || 831 !ops->unassign_vif_chanctx)) 832 return NULL; 833 emulate_chanctx = false; 834 } 835 836 /* Ensure 32-byte alignment of our private data and hw private data. 837 * We use the wiphy priv data for both our ieee80211_local and for 838 * the driver's private data 839 * 840 * In memory it'll be like this: 841 * 842 * +-------------------------+ 843 * | struct wiphy | 844 * +-------------------------+ 845 * | struct ieee80211_local | 846 * +-------------------------+ 847 * | driver's private data | 848 * +-------------------------+ 849 * 850 */ 851 priv_size = ALIGN(sizeof(*local), NETDEV_ALIGN) + priv_data_len; 852 853 wiphy = wiphy_new_nm(&mac80211_config_ops, priv_size, requested_name); 854 855 if (!wiphy) 856 return NULL; 857 858 wiphy->mgmt_stypes = ieee80211_default_mgmt_stypes; 859 860 wiphy->privid = mac80211_wiphy_privid; 861 862 wiphy->flags |= WIPHY_FLAG_NETNS_OK | 863 WIPHY_FLAG_4ADDR_AP | 864 WIPHY_FLAG_4ADDR_STATION | 865 WIPHY_FLAG_REPORTS_OBSS | 866 WIPHY_FLAG_OFFCHAN_TX; 867 868 if (emulate_chanctx || ops->remain_on_channel) 869 wiphy->flags |= WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL; 870 871 wiphy->bss_param_support = WIPHY_BSS_PARAM_CTS_PROT | 872 WIPHY_BSS_PARAM_SHORT_PREAMBLE | 873 WIPHY_BSS_PARAM_SHORT_SLOT_TIME | 874 WIPHY_BSS_PARAM_BASIC_RATES | 875 WIPHY_BSS_PARAM_AP_ISOLATE | 876 WIPHY_BSS_PARAM_HT_OPMODE | 877 WIPHY_BSS_PARAM_P2P_CTWINDOW | 878 WIPHY_BSS_PARAM_P2P_OPPPS; 879 wiphy->features |= NL80211_FEATURE_SK_TX_STATUS | 880 NL80211_FEATURE_SAE | 881 NL80211_FEATURE_HT_IBSS | 882 NL80211_FEATURE_VIF_TXPOWER | 883 NL80211_FEATURE_MAC_ON_CREATE | 884 NL80211_FEATURE_USERSPACE_MPM | 885 NL80211_FEATURE_FULL_AP_CLIENT_STATE; 886 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_FILS_STA); 887 wiphy_ext_feature_set(wiphy, 888 NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211); 889 wiphy_ext_feature_set(wiphy, 890 NL80211_EXT_FEATURE_CONTROL_PORT_NO_PREAUTH); 891 wiphy_ext_feature_set(wiphy, 892 NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211_TX_STATUS); 893 wiphy_ext_feature_set(wiphy, 894 NL80211_EXT_FEATURE_SCAN_FREQ_KHZ); 895 wiphy_ext_feature_set(wiphy, 896 NL80211_EXT_FEATURE_POWERED_ADDR_CHANGE); 897 898 if (!ops->hw_scan) { 899 wiphy->features |= NL80211_FEATURE_LOW_PRIORITY_SCAN | 900 NL80211_FEATURE_AP_SCAN; 901 /* 902 * if the driver behaves correctly using the probe request 903 * (template) from mac80211, then both of these should be 904 * supported even with hw scan - but let drivers opt in. 905 */ 906 wiphy_ext_feature_set(wiphy, 907 NL80211_EXT_FEATURE_SCAN_RANDOM_SN); 908 wiphy_ext_feature_set(wiphy, 909 NL80211_EXT_FEATURE_SCAN_MIN_PREQ_CONTENT); 910 } 911 912 if (!ops->set_key) { 913 wiphy->flags |= WIPHY_FLAG_IBSS_RSN; 914 wiphy_ext_feature_set(wiphy, 915 NL80211_EXT_FEATURE_SPP_AMSDU_SUPPORT); 916 } 917 918 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_TXQS); 919 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_RRM); 920 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_IEEE8021X_AUTH); 921 922 wiphy->bss_priv_size = sizeof(struct ieee80211_bss); 923 924 local = wiphy_priv(wiphy); 925 926 if (sta_info_init(local)) 927 goto err_free; 928 929 local->hw.wiphy = wiphy; 930 931 local->hw.priv = (char *)local + ALIGN(sizeof(*local), NETDEV_ALIGN); 932 933 local->ops = ops; 934 local->emulate_chanctx = emulate_chanctx; 935 936 if (emulate_chanctx) 937 ieee80211_hw_set(&local->hw, CHANCTX_STA_CSA); 938 939 /* 940 * We need a bit of data queued to build aggregates properly, so 941 * instruct the TCP stack to allow more than a single ms of data 942 * to be queued in the stack. The value is a bit-shift of 1 943 * second, so 7 is ~8ms of queued data. Only affects local TCP 944 * sockets. 945 * This is the default, anyhow - drivers may need to override it 946 * for local reasons (longer buffers, longer completion time, or 947 * similar). 948 */ 949 local->hw.tx_sk_pacing_shift = 7; 950 951 /* set up some defaults */ 952 local->hw.queues = 1; 953 local->hw.max_rates = 1; 954 local->hw.max_report_rates = 0; 955 local->hw.max_rx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF_HT; 956 local->hw.max_tx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF_HT; 957 local->hw.offchannel_tx_hw_queue = IEEE80211_INVAL_HW_QUEUE; 958 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long; 959 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short; 960 local->hw.radiotap_mcs_details = IEEE80211_RADIOTAP_MCS_HAVE_MCS | 961 IEEE80211_RADIOTAP_MCS_HAVE_GI | 962 IEEE80211_RADIOTAP_MCS_HAVE_BW; 963 local->hw.radiotap_vht_details = IEEE80211_RADIOTAP_VHT_KNOWN_GI | 964 IEEE80211_RADIOTAP_VHT_KNOWN_BANDWIDTH; 965 local->hw.uapsd_queues = IEEE80211_DEFAULT_UAPSD_QUEUES; 966 local->hw.uapsd_max_sp_len = IEEE80211_DEFAULT_MAX_SP_LEN; 967 local->hw.max_mtu = IEEE80211_MAX_DATA_LEN; 968 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL; 969 wiphy->ht_capa_mod_mask = &mac80211_ht_capa_mod_mask; 970 wiphy->vht_capa_mod_mask = &mac80211_vht_capa_mod_mask; 971 972 local->ext_capa[7] = WLAN_EXT_CAPA8_OPMODE_NOTIF; 973 974 wiphy->extended_capabilities = local->ext_capa; 975 wiphy->extended_capabilities_mask = local->ext_capa; 976 wiphy->extended_capabilities_len = 977 ARRAY_SIZE(local->ext_capa); 978 979 INIT_LIST_HEAD(&local->interfaces); 980 INIT_LIST_HEAD(&local->mon_list); 981 982 __hw_addr_init(&local->mc_list); 983 984 mutex_init(&local->iflist_mtx); 985 spin_lock_init(&local->filter_lock); 986 spin_lock_init(&local->rx_path_lock); 987 spin_lock_init(&local->queue_stop_reason_lock); 988 989 local->aql_txq_limit_mc = IEEE80211_DEFAULT_AQL_TXQ_LIMIT_MC; 990 for (i = 0; i < IEEE80211_NUM_ACS; i++) { 991 INIT_LIST_HEAD(&local->active_txqs[i]); 992 spin_lock_init(&local->active_txq_lock[i]); 993 local->aql_txq_limit_low[i] = IEEE80211_DEFAULT_AQL_TXQ_LIMIT_L; 994 local->aql_txq_limit_high[i] = 995 IEEE80211_DEFAULT_AQL_TXQ_LIMIT_H; 996 atomic_set(&local->aql_ac_pending_airtime[i], 0); 997 } 998 999 local->airtime_flags = AIRTIME_USE_TX | AIRTIME_USE_RX; 1000 local->aql_threshold = IEEE80211_AQL_THRESHOLD; 1001 atomic_set(&local->aql_total_pending_airtime, 0); 1002 1003 spin_lock_init(&local->handle_wake_tx_queue_lock); 1004 1005 INIT_LIST_HEAD(&local->chanctx_list); 1006 1007 wiphy_delayed_work_init(&local->scan_work, ieee80211_scan_work); 1008 1009 INIT_WORK(&local->restart_work, ieee80211_restart_work); 1010 1011 wiphy_work_init(&local->radar_detected_work, 1012 ieee80211_dfs_radar_detected_work); 1013 1014 wiphy_work_init(&local->reconfig_filter, ieee80211_reconfig_filter); 1015 1016 wiphy_work_init(&local->dynamic_ps_enable_work, 1017 ieee80211_dynamic_ps_enable_work); 1018 wiphy_work_init(&local->dynamic_ps_disable_work, 1019 ieee80211_dynamic_ps_disable_work); 1020 timer_setup(&local->dynamic_ps_timer, ieee80211_dynamic_ps_timer, 0); 1021 1022 wiphy_work_init(&local->sched_scan_stopped_work, 1023 ieee80211_sched_scan_stopped_work); 1024 1025 spin_lock_init(&local->ack_status_lock); 1026 idr_init(&local->ack_status_frames); 1027 1028 for (i = 0; i < IEEE80211_MAX_QUEUES; i++) { 1029 skb_queue_head_init(&local->pending[i]); 1030 atomic_set(&local->agg_queue_stop[i], 0); 1031 } 1032 tasklet_setup(&local->tx_pending_tasklet, ieee80211_tx_pending); 1033 tasklet_setup(&local->wake_txqs_tasklet, ieee80211_wake_txqs); 1034 tasklet_setup(&local->tasklet, ieee80211_tasklet_handler); 1035 1036 skb_queue_head_init(&local->skb_queue); 1037 skb_queue_head_init(&local->skb_queue_unreliable); 1038 1039 ieee80211_alloc_led_names(local); 1040 1041 ieee80211_roc_setup(local); 1042 1043 local->hw.radiotap_timestamp.units_pos = -1; 1044 local->hw.radiotap_timestamp.accuracy = -1; 1045 1046 return &local->hw; 1047 err_free: 1048 wiphy_free(wiphy); 1049 return NULL; 1050 } 1051 EXPORT_SYMBOL(ieee80211_alloc_hw_nm); 1052 1053 static int ieee80211_init_cipher_suites(struct ieee80211_local *local) 1054 { 1055 bool have_mfp = ieee80211_hw_check(&local->hw, MFP_CAPABLE); 1056 static const u32 cipher_suites[] = { 1057 /* keep WEP and TKIP first, they may be removed below */ 1058 WLAN_CIPHER_SUITE_WEP40, 1059 WLAN_CIPHER_SUITE_WEP104, 1060 WLAN_CIPHER_SUITE_TKIP, 1061 WLAN_CIPHER_SUITE_CCMP, 1062 WLAN_CIPHER_SUITE_CCMP_256, 1063 WLAN_CIPHER_SUITE_GCMP, 1064 WLAN_CIPHER_SUITE_GCMP_256, 1065 1066 /* keep last -- depends on hw flags! */ 1067 WLAN_CIPHER_SUITE_AES_CMAC, 1068 WLAN_CIPHER_SUITE_BIP_CMAC_256, 1069 WLAN_CIPHER_SUITE_BIP_GMAC_128, 1070 WLAN_CIPHER_SUITE_BIP_GMAC_256, 1071 }; 1072 1073 if (ieee80211_hw_check(&local->hw, SW_CRYPTO_CONTROL) && fips_enabled) { 1074 dev_err(local->hw.wiphy->dev.parent, 1075 "Drivers with SW_CRYPTO_CONTROL cannot work with FIPS\n"); 1076 return -EINVAL; 1077 } 1078 1079 if (WARN_ON(ieee80211_hw_check(&local->hw, SW_CRYPTO_CONTROL) && 1080 !local->hw.wiphy->cipher_suites)) 1081 return -EINVAL; 1082 1083 if (fips_enabled || !local->hw.wiphy->cipher_suites) { 1084 /* assign the (software supported and perhaps offloaded) 1085 * cipher suites 1086 */ 1087 local->hw.wiphy->cipher_suites = cipher_suites; 1088 local->hw.wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites); 1089 1090 if (!have_mfp) 1091 local->hw.wiphy->n_cipher_suites -= 4; 1092 1093 /* FIPS does not permit the use of RC4 */ 1094 if (fips_enabled) { 1095 local->hw.wiphy->cipher_suites += 3; 1096 local->hw.wiphy->n_cipher_suites -= 3; 1097 } 1098 } 1099 1100 return 0; 1101 } 1102 1103 static bool 1104 ieee80211_ifcomb_check(const struct ieee80211_iface_combination *c, int n_comb) 1105 { 1106 int i, j; 1107 1108 for (i = 0; i < n_comb; i++, c++) { 1109 /* DFS is not supported with multi-channel combinations yet */ 1110 if (c->radar_detect_widths && 1111 c->num_different_channels > 1) 1112 return false; 1113 1114 /* mac80211 doesn't support more than one IBSS interface */ 1115 for (j = 0; j < c->n_limits; j++) 1116 if ((c->limits[j].types & BIT(NL80211_IFTYPE_ADHOC)) && 1117 c->limits[j].max > 1) 1118 return false; 1119 } 1120 1121 return true; 1122 } 1123 1124 static void ieee80211_create_default_chandef(struct cfg80211_chan_def *chandef, 1125 struct ieee80211_channel *chan) 1126 { 1127 *chandef = (struct cfg80211_chan_def) { 1128 .chan = chan, 1129 .width = chan->band == NL80211_BAND_S1GHZ ? 1130 NL80211_CHAN_WIDTH_1 : 1131 NL80211_CHAN_WIDTH_20_NOHT, 1132 .center_freq1 = chan->center_freq, 1133 .freq1_offset = chan->freq_offset, 1134 }; 1135 } 1136 1137 int ieee80211_register_hw(struct ieee80211_hw *hw) 1138 { 1139 struct ieee80211_local *local = hw_to_local(hw); 1140 int result, i; 1141 enum nl80211_band band; 1142 int channels, max_bitrates; 1143 bool supp_ht, supp_vht, supp_he, supp_eht, supp_s1g, supp_uhr; 1144 struct cfg80211_chan_def dflt_chandef = {}; 1145 1146 if (ieee80211_hw_check(hw, QUEUE_CONTROL) && 1147 (local->hw.offchannel_tx_hw_queue == IEEE80211_INVAL_HW_QUEUE || 1148 local->hw.offchannel_tx_hw_queue >= local->hw.queues)) 1149 return -EINVAL; 1150 1151 if ((hw->wiphy->features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH) && 1152 (!local->ops->tdls_channel_switch || 1153 !local->ops->tdls_cancel_channel_switch || 1154 !local->ops->tdls_recv_channel_switch)) 1155 return -EOPNOTSUPP; 1156 1157 if (WARN_ON(ieee80211_hw_check(hw, SUPPORTS_TX_FRAG) && 1158 !local->ops->set_frag_threshold)) 1159 return -EINVAL; 1160 1161 if (WARN_ON(local->hw.wiphy->interface_modes & 1162 BIT(NL80211_IFTYPE_NAN) && 1163 ((!local->ops->start_nan || !local->ops->stop_nan) || 1164 (local->hw.wiphy->nan_capa.flags & WIPHY_NAN_FLAGS_USERSPACE_DE && 1165 (local->ops->add_nan_func || local->ops->del_nan_func))))) 1166 return -EINVAL; 1167 1168 if (hw->wiphy->flags & WIPHY_FLAG_SUPPORTS_MLO) { 1169 /* 1170 * For drivers capable of doing MLO, assume modern driver 1171 * or firmware facilities, so software doesn't have to do 1172 * as much, e.g. monitoring beacons would be hard if we 1173 * might not even know which link is active at which time. 1174 */ 1175 if (WARN_ON(local->emulate_chanctx)) 1176 return -EINVAL; 1177 1178 if (WARN_ON(!local->ops->link_info_changed)) 1179 return -EINVAL; 1180 1181 if (WARN_ON(!ieee80211_hw_check(hw, HAS_RATE_CONTROL))) 1182 return -EINVAL; 1183 1184 if (WARN_ON(!ieee80211_hw_check(hw, AMPDU_AGGREGATION))) 1185 return -EINVAL; 1186 1187 if (WARN_ON(ieee80211_hw_check(hw, HOST_BROADCAST_PS_BUFFERING))) 1188 return -EINVAL; 1189 1190 if (WARN_ON(ieee80211_hw_check(hw, SUPPORTS_PS) && 1191 (!ieee80211_hw_check(hw, SUPPORTS_DYNAMIC_PS) || 1192 ieee80211_hw_check(hw, PS_NULLFUNC_STACK)))) 1193 return -EINVAL; 1194 1195 if (WARN_ON(!ieee80211_hw_check(hw, MFP_CAPABLE))) 1196 return -EINVAL; 1197 1198 if (WARN_ON(ieee80211_hw_check(hw, NEED_DTIM_BEFORE_ASSOC))) 1199 return -EINVAL; 1200 1201 if (WARN_ON(ieee80211_hw_check(hw, TIMING_BEACON_ONLY))) 1202 return -EINVAL; 1203 1204 if (WARN_ON(!ieee80211_hw_check(hw, AP_LINK_PS))) 1205 return -EINVAL; 1206 } 1207 1208 #ifdef CONFIG_PM 1209 if (hw->wiphy->wowlan && (!local->ops->suspend || !local->ops->resume)) 1210 return -EINVAL; 1211 #endif 1212 1213 if (local->emulate_chanctx) { 1214 for (i = 0; i < local->hw.wiphy->n_iface_combinations; i++) { 1215 const struct ieee80211_iface_combination *comb; 1216 1217 comb = &local->hw.wiphy->iface_combinations[i]; 1218 1219 if (comb->num_different_channels > 1) 1220 return -EINVAL; 1221 } 1222 } 1223 1224 if (hw->wiphy->n_radio) { 1225 for (i = 0; i < hw->wiphy->n_radio; i++) { 1226 const struct wiphy_radio *radio = &hw->wiphy->radio[i]; 1227 1228 if (!ieee80211_ifcomb_check(radio->iface_combinations, 1229 radio->n_iface_combinations)) 1230 return -EINVAL; 1231 } 1232 } else { 1233 if (!ieee80211_ifcomb_check(hw->wiphy->iface_combinations, 1234 hw->wiphy->n_iface_combinations)) 1235 return -EINVAL; 1236 } 1237 1238 /* Only HW csum features are currently compatible with mac80211 */ 1239 if (WARN_ON(hw->netdev_features & ~MAC80211_SUPPORTED_FEATURES)) 1240 return -EINVAL; 1241 1242 if (hw->max_report_rates == 0) 1243 hw->max_report_rates = hw->max_rates; 1244 1245 local->rx_chains = 1; 1246 1247 /* 1248 * generic code guarantees at least one band, 1249 * set this very early because much code assumes 1250 * that hw.conf.channel is assigned 1251 */ 1252 channels = 0; 1253 max_bitrates = 0; 1254 supp_ht = false; 1255 supp_vht = false; 1256 supp_he = false; 1257 supp_eht = false; 1258 supp_s1g = false; 1259 supp_uhr = false; 1260 for (band = 0; band < NUM_NL80211_BANDS; band++) { 1261 const struct ieee80211_sband_iftype_data *iftd; 1262 struct ieee80211_supported_band *sband; 1263 1264 sband = local->hw.wiphy->bands[band]; 1265 if (!sband) 1266 continue; 1267 1268 if (!dflt_chandef.chan) { 1269 /* 1270 * Assign the first enabled channel to dflt_chandef 1271 * from the list of channels. For S1G interfaces 1272 * ensure it can be used as a primary. 1273 */ 1274 for (i = 0; i < sband->n_channels; i++) 1275 if (!(sband->channels[i].flags & 1276 (IEEE80211_CHAN_DISABLED | 1277 IEEE80211_CHAN_S1G_NO_PRIMARY))) 1278 break; 1279 /* if none found then use the first anyway */ 1280 if (i == sband->n_channels) 1281 i = 0; 1282 ieee80211_create_default_chandef(&dflt_chandef, 1283 &sband->channels[i]); 1284 /* init channel we're on */ 1285 local->monitor_chanreq.oper = dflt_chandef; 1286 if (local->emulate_chanctx) { 1287 local->dflt_chandef = dflt_chandef; 1288 local->hw.conf.chandef = dflt_chandef; 1289 } 1290 } 1291 1292 channels += sband->n_channels; 1293 1294 /* 1295 * Due to the way the aggregation code handles this and it 1296 * being an HT capability, we can't really support delayed 1297 * BA in MLO (yet). 1298 */ 1299 if (WARN_ON(sband->ht_cap.ht_supported && 1300 (sband->ht_cap.cap & IEEE80211_HT_CAP_DELAY_BA) && 1301 hw->wiphy->flags & WIPHY_FLAG_SUPPORTS_MLO)) 1302 return -EINVAL; 1303 1304 if (max_bitrates < sband->n_bitrates) 1305 max_bitrates = sband->n_bitrates; 1306 supp_ht = supp_ht || sband->ht_cap.ht_supported; 1307 supp_vht = supp_vht || sband->vht_cap.vht_supported; 1308 supp_s1g = supp_s1g || sband->s1g_cap.s1g; 1309 1310 for_each_sband_iftype_data(sband, i, iftd) { 1311 u8 he_40_mhz_cap; 1312 1313 supp_he = supp_he || iftd->he_cap.has_he; 1314 supp_eht = supp_eht || iftd->eht_cap.has_eht; 1315 supp_uhr = supp_uhr || iftd->uhr_cap.has_uhr; 1316 1317 if (band == NL80211_BAND_2GHZ) 1318 he_40_mhz_cap = 1319 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_IN_2G; 1320 else 1321 he_40_mhz_cap = 1322 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G; 1323 1324 /* currently no support for HE client where HT has 40 MHz but not HT */ 1325 if (iftd->he_cap.has_he && 1326 iftd->types_mask & (BIT(NL80211_IFTYPE_STATION) | 1327 BIT(NL80211_IFTYPE_P2P_CLIENT)) && 1328 sband->ht_cap.ht_supported && 1329 sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 && 1330 !(iftd->he_cap.he_cap_elem.phy_cap_info[0] & he_40_mhz_cap)) 1331 return -EINVAL; 1332 1333 /* no support for per-band vendor elems with MLO */ 1334 if (WARN_ON(iftd->vendor_elems.len && 1335 hw->wiphy->flags & WIPHY_FLAG_SUPPORTS_MLO)) 1336 return -EINVAL; 1337 } 1338 1339 /* HT, VHT, HE require QoS, thus >= 4 queues */ 1340 if (WARN_ON(local->hw.queues < IEEE80211_NUM_ACS && 1341 (supp_ht || supp_vht || supp_he))) 1342 return -EINVAL; 1343 1344 /* EHT requires HE support */ 1345 if (WARN_ON(supp_eht && !supp_he)) 1346 return -EINVAL; 1347 1348 /* UHR requires EHT support */ 1349 if (WARN_ON(supp_uhr && !supp_eht)) 1350 return -EINVAL; 1351 1352 if (!sband->ht_cap.ht_supported) 1353 continue; 1354 1355 /* TODO: consider VHT for RX chains, hopefully it's the same */ 1356 local->rx_chains = 1357 max(ieee80211_mcs_to_chains(&sband->ht_cap.mcs), 1358 local->rx_chains); 1359 1360 /* no need to mask, SM_PS_DISABLED has all bits set */ 1361 sband->ht_cap.cap |= WLAN_HT_CAP_SM_PS_DISABLED << 1362 IEEE80211_HT_CAP_SM_PS_SHIFT; 1363 } 1364 1365 /* if low-level driver supports AP, we also support VLAN. 1366 * drivers advertising SW_CRYPTO_CONTROL should enable AP_VLAN 1367 * based on their support to transmit SW encrypted packets. 1368 */ 1369 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_AP) && 1370 !ieee80211_hw_check(&local->hw, SW_CRYPTO_CONTROL)) { 1371 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP_VLAN); 1372 hw->wiphy->software_iftypes |= BIT(NL80211_IFTYPE_AP_VLAN); 1373 } 1374 1375 /* mac80211 always supports monitor */ 1376 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR); 1377 hw->wiphy->software_iftypes |= BIT(NL80211_IFTYPE_MONITOR); 1378 1379 1380 local->int_scan_req = kzalloc_flex(*local->int_scan_req, channels, 1381 channels); 1382 if (!local->int_scan_req) 1383 return -ENOMEM; 1384 1385 eth_broadcast_addr(local->int_scan_req->bssid); 1386 1387 for (band = 0; band < NUM_NL80211_BANDS; band++) { 1388 if (!local->hw.wiphy->bands[band]) 1389 continue; 1390 local->int_scan_req->rates[band] = (u32) -1; 1391 } 1392 1393 #ifndef CONFIG_MAC80211_MESH 1394 /* mesh depends on Kconfig, but drivers should set it if they want */ 1395 local->hw.wiphy->interface_modes &= ~BIT(NL80211_IFTYPE_MESH_POINT); 1396 #endif 1397 1398 /* if the underlying driver supports mesh, mac80211 will (at least) 1399 * provide routing of mesh authentication frames to userspace */ 1400 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_MESH_POINT)) 1401 local->hw.wiphy->flags |= WIPHY_FLAG_MESH_AUTH; 1402 1403 /* mac80211 supports control port protocol changing */ 1404 local->hw.wiphy->flags |= WIPHY_FLAG_CONTROL_PORT_PROTOCOL; 1405 1406 if (ieee80211_hw_check(&local->hw, SIGNAL_DBM)) { 1407 local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM; 1408 } else if (ieee80211_hw_check(&local->hw, SIGNAL_UNSPEC)) { 1409 local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC; 1410 if (hw->max_signal <= 0) { 1411 result = -EINVAL; 1412 goto fail_workqueue; 1413 } 1414 } 1415 1416 /* Mac80211 and therefore all drivers using SW crypto only 1417 * are able to handle PTK rekeys and Extended Key ID. 1418 */ 1419 if (!local->ops->set_key) { 1420 wiphy_ext_feature_set(local->hw.wiphy, 1421 NL80211_EXT_FEATURE_CAN_REPLACE_PTK0); 1422 wiphy_ext_feature_set(local->hw.wiphy, 1423 NL80211_EXT_FEATURE_EXT_KEY_ID); 1424 } 1425 1426 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_ADHOC)) 1427 wiphy_ext_feature_set(local->hw.wiphy, 1428 NL80211_EXT_FEATURE_DEL_IBSS_STA); 1429 1430 /* 1431 * Calculate scan IE length -- we need this to alloc 1432 * memory and to subtract from the driver limit. It 1433 * includes the DS Params, (extended) supported rates, and HT 1434 * information -- SSID is the driver's responsibility. 1435 */ 1436 local->scan_ies_len = 4 + max_bitrates /* (ext) supp rates */ + 1437 3 /* DS Params */; 1438 if (supp_ht) 1439 local->scan_ies_len += 2 + sizeof(struct ieee80211_ht_cap); 1440 1441 if (supp_vht) 1442 local->scan_ies_len += 1443 2 + sizeof(struct ieee80211_vht_cap); 1444 1445 if (supp_s1g) 1446 local->scan_ies_len += 2 + sizeof(struct ieee80211_s1g_cap); 1447 1448 /* 1449 * HE cap element is variable in size - set len to allow max size */ 1450 if (supp_he) { 1451 local->scan_ies_len += 1452 3 + sizeof(struct ieee80211_he_cap_elem) + 1453 sizeof(struct ieee80211_he_mcs_nss_supp) + 1454 IEEE80211_HE_PPE_THRES_MAX_LEN; 1455 1456 if (supp_eht) 1457 local->scan_ies_len += 1458 3 + sizeof(struct ieee80211_eht_cap_elem) + 1459 sizeof(struct ieee80211_eht_mcs_nss_supp) + 1460 IEEE80211_EHT_PPE_THRES_MAX_LEN; 1461 } 1462 1463 if (supp_uhr) 1464 local->scan_ies_len += 1465 3 + sizeof(struct ieee80211_uhr_cap); 1466 1467 if (!local->ops->hw_scan) { 1468 /* For hw_scan, driver needs to set these up. */ 1469 local->hw.wiphy->max_scan_ssids = 4; 1470 local->hw.wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN; 1471 } 1472 1473 /* 1474 * If the driver supports any scan IEs, then assume the 1475 * limit includes the IEs mac80211 will add, otherwise 1476 * leave it at zero and let the driver sort it out; we 1477 * still pass our IEs to the driver but userspace will 1478 * not be allowed to in that case. 1479 */ 1480 if (local->hw.wiphy->max_scan_ie_len) 1481 local->hw.wiphy->max_scan_ie_len -= local->scan_ies_len; 1482 1483 result = ieee80211_init_cipher_suites(local); 1484 if (result < 0) 1485 goto fail_workqueue; 1486 1487 if (!local->ops->remain_on_channel) 1488 local->hw.wiphy->max_remain_on_channel_duration = 5000; 1489 1490 /* mac80211 based drivers don't support internal TDLS setup */ 1491 if (local->hw.wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS) 1492 local->hw.wiphy->flags |= WIPHY_FLAG_TDLS_EXTERNAL_SETUP; 1493 1494 /* mac80211 supports eCSA, if the driver supports STA CSA at all */ 1495 if (ieee80211_hw_check(&local->hw, CHANCTX_STA_CSA)) 1496 local->ext_capa[0] |= WLAN_EXT_CAPA1_EXT_CHANNEL_SWITCHING; 1497 1498 /* mac80211 supports multi BSSID, if the driver supports it */ 1499 if (ieee80211_hw_check(&local->hw, SUPPORTS_MULTI_BSSID)) { 1500 local->hw.wiphy->support_mbssid = true; 1501 if (ieee80211_hw_check(&local->hw, 1502 SUPPORTS_ONLY_HE_MULTI_BSSID)) 1503 local->hw.wiphy->support_only_he_mbssid = true; 1504 else 1505 local->ext_capa[2] |= 1506 WLAN_EXT_CAPA3_MULTI_BSSID_SUPPORT; 1507 } 1508 1509 local->hw.wiphy->max_num_csa_counters = IEEE80211_MAX_CNTDWN_COUNTERS_NUM; 1510 1511 /* 1512 * We use the number of queues for feature tests (QoS, HT) internally 1513 * so restrict them appropriately. 1514 */ 1515 if (hw->queues > IEEE80211_MAX_QUEUES) 1516 hw->queues = IEEE80211_MAX_QUEUES; 1517 1518 local->workqueue = 1519 alloc_ordered_workqueue("%s", 0, wiphy_name(local->hw.wiphy)); 1520 if (!local->workqueue) { 1521 result = -ENOMEM; 1522 goto fail_workqueue; 1523 } 1524 1525 /* 1526 * The hardware needs headroom for sending the frame, 1527 * and we need some headroom for passing the frame to monitor 1528 * interfaces, but never both at the same time. 1529 */ 1530 local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom, 1531 IEEE80211_TX_STATUS_HEADROOM); 1532 1533 /* 1534 * if the driver doesn't specify a max listen interval we 1535 * use 5 which should be a safe default 1536 */ 1537 if (local->hw.max_listen_interval == 0) 1538 local->hw.max_listen_interval = 5; 1539 1540 local->hw.conf.listen_interval = local->hw.max_listen_interval; 1541 1542 local->dynamic_ps_forced_timeout = -1; 1543 1544 if (!local->hw.max_nan_de_entries) 1545 local->hw.max_nan_de_entries = IEEE80211_MAX_NAN_INSTANCE_ID; 1546 1547 if (!local->hw.weight_multiplier) 1548 local->hw.weight_multiplier = 1; 1549 1550 ieee80211_wep_init(local); 1551 1552 local->hw.conf.flags = IEEE80211_CONF_IDLE; 1553 1554 ieee80211_led_init(local); 1555 1556 result = ieee80211_txq_setup_flows(local); 1557 if (result) 1558 goto fail_flows; 1559 1560 rtnl_lock(); 1561 result = ieee80211_init_rate_ctrl_alg(local, 1562 hw->rate_control_algorithm); 1563 rtnl_unlock(); 1564 if (result < 0) { 1565 wiphy_debug(local->hw.wiphy, 1566 "Failed to initialize rate control algorithm\n"); 1567 goto fail_rate; 1568 } 1569 1570 if (local->rate_ctrl) { 1571 clear_bit(IEEE80211_HW_SUPPORTS_VHT_EXT_NSS_BW, hw->flags); 1572 if (local->rate_ctrl->ops->capa & RATE_CTRL_CAPA_VHT_EXT_NSS_BW) 1573 ieee80211_hw_set(hw, SUPPORTS_VHT_EXT_NSS_BW); 1574 } 1575 1576 /* 1577 * If the VHT capabilities don't have IEEE80211_VHT_EXT_NSS_BW_CAPABLE, 1578 * or have it when we don't, copy the sband structure and set/clear it. 1579 * This is necessary because rate scaling algorithms could be switched 1580 * and have different support values. 1581 * Print a message so that in the common case the reallocation can be 1582 * avoided. 1583 */ 1584 BUILD_BUG_ON(NUM_NL80211_BANDS > 8 * sizeof(local->sband_allocated)); 1585 for (band = 0; band < NUM_NL80211_BANDS; band++) { 1586 struct ieee80211_supported_band *sband; 1587 bool local_cap, ie_cap; 1588 1589 local_cap = ieee80211_hw_check(hw, SUPPORTS_VHT_EXT_NSS_BW); 1590 1591 sband = local->hw.wiphy->bands[band]; 1592 if (!sband || !sband->vht_cap.vht_supported) 1593 continue; 1594 1595 ie_cap = !!(sband->vht_cap.vht_mcs.tx_highest & 1596 cpu_to_le16(IEEE80211_VHT_EXT_NSS_BW_CAPABLE)); 1597 1598 if (local_cap == ie_cap) 1599 continue; 1600 1601 sband = kmemdup(sband, sizeof(*sband), GFP_KERNEL); 1602 if (!sband) { 1603 result = -ENOMEM; 1604 goto fail_band; 1605 } 1606 1607 wiphy_dbg(hw->wiphy, "copying sband (band %d) due to VHT EXT NSS BW flag\n", 1608 band); 1609 1610 sband->vht_cap.vht_mcs.tx_highest ^= 1611 cpu_to_le16(IEEE80211_VHT_EXT_NSS_BW_CAPABLE); 1612 1613 local->hw.wiphy->bands[band] = sband; 1614 local->sband_allocated |= BIT(band); 1615 } 1616 1617 /* 1618 * mac80211 supports EPPKE, if the driver supports (Re)Association 1619 * frame encryption 1620 */ 1621 if (wiphy_ext_feature_isset(local->hw.wiphy, 1622 NL80211_EXT_FEATURE_ASSOC_FRAME_ENCRYPTION)) 1623 wiphy_ext_feature_set(local->hw.wiphy, 1624 NL80211_EXT_FEATURE_EPPKE); 1625 1626 result = wiphy_register(local->hw.wiphy); 1627 if (result < 0) 1628 goto fail_wiphy_register; 1629 1630 debugfs_hw_add(local); 1631 rate_control_add_debugfs(local); 1632 1633 ieee80211_check_wbrf_support(local); 1634 1635 rtnl_lock(); 1636 wiphy_lock(hw->wiphy); 1637 1638 /* add one default STA interface if supported */ 1639 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_STATION) && 1640 !ieee80211_hw_check(hw, NO_AUTO_VIF)) { 1641 struct vif_params params = {0}; 1642 1643 result = ieee80211_if_add(local, "wlan%d", NET_NAME_ENUM, NULL, 1644 NL80211_IFTYPE_STATION, ¶ms); 1645 if (result) 1646 wiphy_warn(local->hw.wiphy, 1647 "Failed to add default virtual iface\n"); 1648 } 1649 1650 wiphy_unlock(hw->wiphy); 1651 rtnl_unlock(); 1652 1653 #ifdef CONFIG_INET 1654 local->ifa_notifier.notifier_call = ieee80211_ifa_changed; 1655 result = register_inetaddr_notifier(&local->ifa_notifier); 1656 if (result) 1657 goto fail_ifa; 1658 #endif 1659 1660 #if IS_ENABLED(CONFIG_IPV6) 1661 local->ifa6_notifier.notifier_call = ieee80211_ifa6_changed; 1662 result = register_inet6addr_notifier(&local->ifa6_notifier); 1663 if (result) 1664 goto fail_ifa6; 1665 #endif 1666 1667 return 0; 1668 1669 #if IS_ENABLED(CONFIG_IPV6) 1670 fail_ifa6: 1671 #ifdef CONFIG_INET 1672 unregister_inetaddr_notifier(&local->ifa_notifier); 1673 #endif 1674 #endif 1675 #if defined(CONFIG_INET) || defined(CONFIG_IPV6) 1676 fail_ifa: 1677 #endif 1678 wiphy_unregister(local->hw.wiphy); 1679 fail_wiphy_register: 1680 fail_band: 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