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) 2018-2023 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 37void 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 87static 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 96static 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 || 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); 170 171 rcu_read_lock(); 172 list_for_each_entry_rcu(sdata, &local->interfaces, list) { 173 if (!rcu_access_pointer(sdata->vif.bss_conf.chanctx_conf)) 174 continue; 175 if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) 176 continue; 177 if (sdata->vif.bss_conf.txpower == INT_MIN) 178 continue; 179 power = min(power, sdata->vif.bss_conf.txpower); 180 } 181 rcu_read_unlock(); 182 183 if (local->hw.conf.power_level != power) { 184 changed |= IEEE80211_CONF_CHANGE_POWER; 185 local->hw.conf.power_level = power; 186 } 187 188 return changed; 189} 190 191int ieee80211_hw_config(struct ieee80211_local *local, u32 changed) 192{ 193 int ret = 0; 194 195 might_sleep(); 196 197 WARN_ON(changed & (IEEE80211_CONF_CHANGE_CHANNEL | 198 IEEE80211_CONF_CHANGE_POWER | 199 IEEE80211_CONF_CHANGE_SMPS)); 200 201 if (changed && local->open_count) { 202 ret = drv_config(local, changed); 203 /* 204 * Goal: 205 * HW reconfiguration should never fail, the driver has told 206 * us what it can support so it should live up to that promise. 207 * 208 * Current status: 209 * rfkill is not integrated with mac80211 and a 210 * configuration command can thus fail if hardware rfkill 211 * is enabled 212 * 213 * FIXME: integrate rfkill with mac80211 and then add this 214 * WARN_ON() back 215 * 216 */ 217 /* WARN_ON(ret); */ 218 } 219 220 return ret; 221} 222 223/* for scanning, offchannel and chanctx emulation only */ 224static int _ieee80211_hw_conf_chan(struct ieee80211_local *local, 225 struct ieee80211_chanctx_conf *ctx) 226{ 227 u32 changed; 228 229 if (!local->open_count) 230 return 0; 231 232 changed = ieee80211_calc_hw_conf_chan(local, ctx); 233 if (!changed) 234 return 0; 235 236 return drv_config(local, changed); 237} 238 239int ieee80211_hw_conf_chan(struct ieee80211_local *local) 240{ 241 struct ieee80211_chanctx *ctx; 242 243 ctx = list_first_entry_or_null(&local->chanctx_list, 244 struct ieee80211_chanctx, 245 list); 246 247 return _ieee80211_hw_conf_chan(local, ctx ? &ctx->conf : NULL); 248} 249 250void ieee80211_hw_conf_init(struct ieee80211_local *local) 251{ 252 u32 changed = ~(IEEE80211_CONF_CHANGE_CHANNEL | 253 IEEE80211_CONF_CHANGE_POWER | 254 IEEE80211_CONF_CHANGE_SMPS); 255 256 if (WARN_ON(!local->open_count)) 257 return; 258 259 if (local->emulate_chanctx) { 260 struct ieee80211_chanctx *ctx; 261 262 ctx = list_first_entry_or_null(&local->chanctx_list, 263 struct ieee80211_chanctx, 264 list); 265 266 changed |= ieee80211_calc_hw_conf_chan(local, 267 ctx ? &ctx->conf : NULL); 268 } 269 270 WARN_ON(drv_config(local, changed)); 271} 272 273int ieee80211_emulate_add_chanctx(struct ieee80211_hw *hw, 274 struct ieee80211_chanctx_conf *ctx) 275{ 276 struct ieee80211_local *local = hw_to_local(hw); 277 278 local->hw.conf.radar_enabled = ctx->radar_enabled; 279 280 return _ieee80211_hw_conf_chan(local, ctx); 281} 282EXPORT_SYMBOL(ieee80211_emulate_add_chanctx); 283 284void ieee80211_emulate_remove_chanctx(struct ieee80211_hw *hw, 285 struct ieee80211_chanctx_conf *ctx) 286{ 287 struct ieee80211_local *local = hw_to_local(hw); 288 289 local->hw.conf.radar_enabled = false; 290 291 _ieee80211_hw_conf_chan(local, NULL); 292} 293EXPORT_SYMBOL(ieee80211_emulate_remove_chanctx); 294 295void ieee80211_emulate_change_chanctx(struct ieee80211_hw *hw, 296 struct ieee80211_chanctx_conf *ctx, 297 u32 changed) 298{ 299 struct ieee80211_local *local = hw_to_local(hw); 300 301 local->hw.conf.radar_enabled = ctx->radar_enabled; 302 303 _ieee80211_hw_conf_chan(local, ctx); 304} 305EXPORT_SYMBOL(ieee80211_emulate_change_chanctx); 306 307int ieee80211_emulate_switch_vif_chanctx(struct ieee80211_hw *hw, 308 struct ieee80211_vif_chanctx_switch *vifs, 309 int n_vifs, 310 enum ieee80211_chanctx_switch_mode mode) 311{ 312 struct ieee80211_local *local = hw_to_local(hw); 313 314 if (n_vifs <= 0) 315 return -EINVAL; 316 317 local->hw.conf.radar_enabled = vifs[0].new_ctx->radar_enabled; 318 _ieee80211_hw_conf_chan(local, vifs[0].new_ctx); 319 320 return 0; 321} 322EXPORT_SYMBOL(ieee80211_emulate_switch_vif_chanctx); 323 324#define BSS_CHANGED_VIF_CFG_FLAGS (BSS_CHANGED_ASSOC |\ 325 BSS_CHANGED_IDLE |\ 326 BSS_CHANGED_PS |\ 327 BSS_CHANGED_IBSS |\ 328 BSS_CHANGED_ARP_FILTER |\ 329 BSS_CHANGED_SSID |\ 330 BSS_CHANGED_MLD_VALID_LINKS |\ 331 BSS_CHANGED_MLD_TTLM) 332 333void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, 334 u64 changed) 335{ 336 struct ieee80211_local *local = sdata->local; 337 338 might_sleep(); 339 340 if (!changed || sdata->vif.type == NL80211_IFTYPE_AP_VLAN) 341 return; 342 343 if (WARN_ON_ONCE(changed & (BSS_CHANGED_BEACON | 344 BSS_CHANGED_BEACON_ENABLED) && 345 sdata->vif.type != NL80211_IFTYPE_AP && 346 sdata->vif.type != NL80211_IFTYPE_ADHOC && 347 sdata->vif.type != NL80211_IFTYPE_MESH_POINT && 348 sdata->vif.type != NL80211_IFTYPE_OCB)) 349 return; 350 351 if (WARN_ON_ONCE(sdata->vif.type == NL80211_IFTYPE_P2P_DEVICE || 352 sdata->vif.type == NL80211_IFTYPE_NAN || 353 (sdata->vif.type == NL80211_IFTYPE_MONITOR && 354 !sdata->vif.bss_conf.mu_mimo_owner && 355 !(changed & BSS_CHANGED_TXPOWER)))) 356 return; 357 358 if (!check_sdata_in_driver(sdata)) 359 return; 360 361 if (changed & BSS_CHANGED_VIF_CFG_FLAGS) { 362 u64 ch = changed & BSS_CHANGED_VIF_CFG_FLAGS; 363 364 trace_drv_vif_cfg_changed(local, sdata, changed); 365 if (local->ops->vif_cfg_changed) 366 local->ops->vif_cfg_changed(&local->hw, &sdata->vif, ch); 367 } 368 369 if (changed & ~BSS_CHANGED_VIF_CFG_FLAGS) { 370 u64 ch = changed & ~BSS_CHANGED_VIF_CFG_FLAGS; 371 372 /* FIXME: should be for each link */ 373 trace_drv_link_info_changed(local, sdata, &sdata->vif.bss_conf, 374 changed); 375 if (local->ops->link_info_changed) 376 local->ops->link_info_changed(&local->hw, &sdata->vif, 377 &sdata->vif.bss_conf, ch); 378 } 379 380 if (local->ops->bss_info_changed) 381 local->ops->bss_info_changed(&local->hw, &sdata->vif, 382 &sdata->vif.bss_conf, changed); 383 trace_drv_return_void(local); 384} 385 386void ieee80211_vif_cfg_change_notify(struct ieee80211_sub_if_data *sdata, 387 u64 changed) 388{ 389 struct ieee80211_local *local = sdata->local; 390 391 WARN_ON_ONCE(changed & ~BSS_CHANGED_VIF_CFG_FLAGS); 392 393 if (!changed || sdata->vif.type == NL80211_IFTYPE_AP_VLAN) 394 return; 395 396 drv_vif_cfg_changed(local, sdata, changed); 397} 398 399void ieee80211_link_info_change_notify(struct ieee80211_sub_if_data *sdata, 400 struct ieee80211_link_data *link, 401 u64 changed) 402{ 403 struct ieee80211_local *local = sdata->local; 404 405 WARN_ON_ONCE(changed & BSS_CHANGED_VIF_CFG_FLAGS); 406 407 if (!changed || sdata->vif.type == NL80211_IFTYPE_AP_VLAN) 408 return; 409 410 if (!check_sdata_in_driver(sdata)) 411 return; 412 413 drv_link_info_changed(local, sdata, link->conf, link->link_id, changed); 414} 415 416u64 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata) 417{ 418 sdata->vif.bss_conf.use_cts_prot = false; 419 sdata->vif.bss_conf.use_short_preamble = false; 420 sdata->vif.bss_conf.use_short_slot = false; 421 return BSS_CHANGED_ERP_CTS_PROT | 422 BSS_CHANGED_ERP_PREAMBLE | 423 BSS_CHANGED_ERP_SLOT; 424} 425 426static void ieee80211_tasklet_handler(struct tasklet_struct *t) 427{ 428 struct ieee80211_local *local = from_tasklet(local, t, tasklet); 429 struct sk_buff *skb; 430 431 while ((skb = skb_dequeue(&local->skb_queue)) || 432 (skb = skb_dequeue(&local->skb_queue_unreliable))) { 433 switch (skb->pkt_type) { 434 case IEEE80211_RX_MSG: 435 /* Clear skb->pkt_type in order to not confuse kernel 436 * netstack. */ 437 skb->pkt_type = 0; 438 ieee80211_rx(&local->hw, skb); 439 break; 440 case IEEE80211_TX_STATUS_MSG: 441 skb->pkt_type = 0; 442 ieee80211_tx_status_skb(&local->hw, skb); 443 break; 444 default: 445 WARN(1, "mac80211: Packet is of unknown type %d\n", 446 skb->pkt_type); 447 dev_kfree_skb(skb); 448 break; 449 } 450 } 451} 452 453static void ieee80211_restart_work(struct work_struct *work) 454{ 455 struct ieee80211_local *local = 456 container_of(work, struct ieee80211_local, restart_work); 457 struct ieee80211_sub_if_data *sdata; 458 int ret; 459 460 flush_workqueue(local->workqueue); 461 462 rtnl_lock(); 463 /* we might do interface manipulations, so need both */ 464 wiphy_lock(local->hw.wiphy); 465 wiphy_work_flush(local->hw.wiphy, NULL); 466 467 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning), 468 "%s called with hardware scan in progress\n", __func__); 469 470 list_for_each_entry(sdata, &local->interfaces, list) { 471 /* 472 * XXX: there may be more work for other vif types and even 473 * for station mode: a good thing would be to run most of 474 * the iface type's dependent _stop (ieee80211_mg_stop, 475 * ieee80211_ibss_stop) etc... 476 * For now, fix only the specific bug that was seen: race 477 * between csa_connection_drop_work and us. 478 */ 479 if (sdata->vif.type == NL80211_IFTYPE_STATION) { 480 /* 481 * This worker is scheduled from the iface worker that 482 * runs on mac80211's workqueue, so we can't be 483 * scheduling this worker after the cancel right here. 484 * The exception is ieee80211_chswitch_done. 485 * Then we can have a race... 486 */ 487 wiphy_work_cancel(local->hw.wiphy, 488 &sdata->u.mgd.csa_connection_drop_work); 489 if (sdata->vif.bss_conf.csa_active) 490 ieee80211_sta_connection_lost(sdata, 491 WLAN_REASON_UNSPECIFIED, 492 false); 493 } 494 wiphy_delayed_work_flush(local->hw.wiphy, 495 &sdata->dec_tailroom_needed_wk); 496 } 497 ieee80211_scan_cancel(local); 498 499 /* make sure any new ROC will consider local->in_reconfig */ 500 wiphy_delayed_work_flush(local->hw.wiphy, &local->roc_work); 501 wiphy_work_flush(local->hw.wiphy, &local->hw_roc_done); 502 503 /* wait for all packet processing to be done */ 504 synchronize_net(); 505 506 ret = ieee80211_reconfig(local); 507 wiphy_unlock(local->hw.wiphy); 508 509 if (ret) 510 cfg80211_shutdown_all_interfaces(local->hw.wiphy); 511 512 rtnl_unlock(); 513} 514 515void ieee80211_restart_hw(struct ieee80211_hw *hw) 516{ 517 struct ieee80211_local *local = hw_to_local(hw); 518 519 trace_api_restart_hw(local); 520 521 wiphy_info(hw->wiphy, 522 "Hardware restart was requested\n"); 523 524 /* use this reason, ieee80211_reconfig will unblock it */ 525 ieee80211_stop_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, 526 IEEE80211_QUEUE_STOP_REASON_SUSPEND, 527 false); 528 529 /* 530 * Stop all Rx during the reconfig. We don't want state changes 531 * or driver callbacks while this is in progress. 532 */ 533 local->in_reconfig = true; 534 barrier(); 535 536 queue_work(system_freezable_wq, &local->restart_work); 537} 538EXPORT_SYMBOL(ieee80211_restart_hw); 539 540#ifdef CONFIG_INET 541static int ieee80211_ifa_changed(struct notifier_block *nb, 542 unsigned long data, void *arg) 543{ 544 struct in_ifaddr *ifa = arg; 545 struct ieee80211_local *local = 546 container_of(nb, struct ieee80211_local, 547 ifa_notifier); 548 struct net_device *ndev = ifa->ifa_dev->dev; 549 struct wireless_dev *wdev = ndev->ieee80211_ptr; 550 struct in_device *idev; 551 struct ieee80211_sub_if_data *sdata; 552 struct ieee80211_vif_cfg *vif_cfg; 553 struct ieee80211_if_managed *ifmgd; 554 int c = 0; 555 556 /* Make sure it's our interface that got changed */ 557 if (!wdev) 558 return NOTIFY_DONE; 559 560 if (wdev->wiphy != local->hw.wiphy || !wdev->registered) 561 return NOTIFY_DONE; 562 563 sdata = IEEE80211_DEV_TO_SUB_IF(ndev); 564 vif_cfg = &sdata->vif.cfg; 565 566 /* ARP filtering is only supported in managed mode */ 567 if (sdata->vif.type != NL80211_IFTYPE_STATION) 568 return NOTIFY_DONE; 569 570 idev = __in_dev_get_rtnl(sdata->dev); 571 if (!idev) 572 return NOTIFY_DONE; 573 574 ifmgd = &sdata->u.mgd; 575 576 /* 577 * The nested here is needed to convince lockdep that this is 578 * all OK. Yes, we lock the wiphy mutex here while we already 579 * hold the notifier rwsem, that's the normal case. And yes, 580 * we also acquire the notifier rwsem again when unregistering 581 * a netdev while we already hold the wiphy mutex, so it does 582 * look like a typical ABBA deadlock. 583 * 584 * However, both of these things happen with the RTNL held 585 * already. Therefore, they can't actually happen, since the 586 * lock orders really are ABC and ACB, which is fine due to 587 * the RTNL (A). 588 * 589 * We still need to prevent recursion, which is accomplished 590 * by the !wdev->registered check above. 591 */ 592 mutex_lock_nested(&local->hw.wiphy->mtx, 1); 593 __acquire(&local->hw.wiphy->mtx); 594 595 /* Copy the addresses to the vif config list */ 596 ifa = rtnl_dereference(idev->ifa_list); 597 while (ifa) { 598 if (c < IEEE80211_BSS_ARP_ADDR_LIST_LEN) 599 vif_cfg->arp_addr_list[c] = ifa->ifa_address; 600 ifa = rtnl_dereference(ifa->ifa_next); 601 c++; 602 } 603 604 vif_cfg->arp_addr_cnt = c; 605 606 /* Configure driver only if associated (which also implies it is up) */ 607 if (ifmgd->associated) 608 ieee80211_vif_cfg_change_notify(sdata, BSS_CHANGED_ARP_FILTER); 609 610 wiphy_unlock(local->hw.wiphy); 611 612 return NOTIFY_OK; 613} 614#endif 615 616#if IS_ENABLED(CONFIG_IPV6) 617static int ieee80211_ifa6_changed(struct notifier_block *nb, 618 unsigned long data, void *arg) 619{ 620 struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)arg; 621 struct inet6_dev *idev = ifa->idev; 622 struct net_device *ndev = ifa->idev->dev; 623 struct ieee80211_local *local = 624 container_of(nb, struct ieee80211_local, ifa6_notifier); 625 struct wireless_dev *wdev = ndev->ieee80211_ptr; 626 struct ieee80211_sub_if_data *sdata; 627 628 /* Make sure it's our interface that got changed */ 629 if (!wdev || wdev->wiphy != local->hw.wiphy) 630 return NOTIFY_DONE; 631 632 sdata = IEEE80211_DEV_TO_SUB_IF(ndev); 633 634 /* 635 * For now only support station mode. This is mostly because 636 * doing AP would have to handle AP_VLAN in some way ... 637 */ 638 if (sdata->vif.type != NL80211_IFTYPE_STATION) 639 return NOTIFY_DONE; 640 641 drv_ipv6_addr_change(local, sdata, idev); 642 643 return NOTIFY_OK; 644} 645#endif 646 647/* There isn't a lot of sense in it, but you can transmit anything you like */ 648static const struct ieee80211_txrx_stypes 649ieee80211_default_mgmt_stypes[NUM_NL80211_IFTYPES] = { 650 [NL80211_IFTYPE_ADHOC] = { 651 .tx = 0xffff, 652 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | 653 BIT(IEEE80211_STYPE_AUTH >> 4) | 654 BIT(IEEE80211_STYPE_DEAUTH >> 4) | 655 BIT(IEEE80211_STYPE_PROBE_REQ >> 4), 656 }, 657 [NL80211_IFTYPE_STATION] = { 658 .tx = 0xffff, 659 /* 660 * To support Pre Association Security Negotiation (PASN) while 661 * already associated to one AP, allow user space to register to 662 * Rx authentication frames, so that the user space logic would 663 * be able to receive/handle authentication frames from a 664 * different AP as part of PASN. 665 * It is expected that user space would intelligently register 666 * for Rx authentication frames, i.e., only when PASN is used 667 * and configure a match filter only for PASN authentication 668 * algorithm, as otherwise the MLME functionality of mac80211 669 * would be broken. 670 */ 671 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | 672 BIT(IEEE80211_STYPE_AUTH >> 4) | 673 BIT(IEEE80211_STYPE_PROBE_REQ >> 4), 674 }, 675 [NL80211_IFTYPE_AP] = { 676 .tx = 0xffff, 677 .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) | 678 BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) | 679 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) | 680 BIT(IEEE80211_STYPE_DISASSOC >> 4) | 681 BIT(IEEE80211_STYPE_AUTH >> 4) | 682 BIT(IEEE80211_STYPE_DEAUTH >> 4) | 683 BIT(IEEE80211_STYPE_ACTION >> 4), 684 }, 685 [NL80211_IFTYPE_AP_VLAN] = { 686 /* copy AP */ 687 .tx = 0xffff, 688 .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) | 689 BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) | 690 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) | 691 BIT(IEEE80211_STYPE_DISASSOC >> 4) | 692 BIT(IEEE80211_STYPE_AUTH >> 4) | 693 BIT(IEEE80211_STYPE_DEAUTH >> 4) | 694 BIT(IEEE80211_STYPE_ACTION >> 4), 695 }, 696 [NL80211_IFTYPE_P2P_CLIENT] = { 697 .tx = 0xffff, 698 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | 699 BIT(IEEE80211_STYPE_PROBE_REQ >> 4), 700 }, 701 [NL80211_IFTYPE_P2P_GO] = { 702 .tx = 0xffff, 703 .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) | 704 BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) | 705 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) | 706 BIT(IEEE80211_STYPE_DISASSOC >> 4) | 707 BIT(IEEE80211_STYPE_AUTH >> 4) | 708 BIT(IEEE80211_STYPE_DEAUTH >> 4) | 709 BIT(IEEE80211_STYPE_ACTION >> 4), 710 }, 711 [NL80211_IFTYPE_MESH_POINT] = { 712 .tx = 0xffff, 713 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | 714 BIT(IEEE80211_STYPE_AUTH >> 4) | 715 BIT(IEEE80211_STYPE_DEAUTH >> 4), 716 }, 717 [NL80211_IFTYPE_P2P_DEVICE] = { 718 .tx = 0xffff, 719 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | 720 BIT(IEEE80211_STYPE_PROBE_REQ >> 4), 721 }, 722}; 723 724static const struct ieee80211_ht_cap mac80211_ht_capa_mod_mask = { 725 .ampdu_params_info = IEEE80211_HT_AMPDU_PARM_FACTOR | 726 IEEE80211_HT_AMPDU_PARM_DENSITY, 727 728 .cap_info = cpu_to_le16(IEEE80211_HT_CAP_SUP_WIDTH_20_40 | 729 IEEE80211_HT_CAP_MAX_AMSDU | 730 IEEE80211_HT_CAP_SGI_20 | 731 IEEE80211_HT_CAP_SGI_40 | 732 IEEE80211_HT_CAP_TX_STBC | 733 IEEE80211_HT_CAP_RX_STBC | 734 IEEE80211_HT_CAP_LDPC_CODING | 735 IEEE80211_HT_CAP_40MHZ_INTOLERANT), 736 .mcs = { 737 .rx_mask = { 0xff, 0xff, 0xff, 0xff, 0xff, 738 0xff, 0xff, 0xff, 0xff, 0xff, }, 739 }, 740}; 741 742static const struct ieee80211_vht_cap mac80211_vht_capa_mod_mask = { 743 .vht_cap_info = 744 cpu_to_le32(IEEE80211_VHT_CAP_RXLDPC | 745 IEEE80211_VHT_CAP_SHORT_GI_80 | 746 IEEE80211_VHT_CAP_SHORT_GI_160 | 747 IEEE80211_VHT_CAP_RXSTBC_MASK | 748 IEEE80211_VHT_CAP_TXSTBC | 749 IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE | 750 IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE | 751 IEEE80211_VHT_CAP_TX_ANTENNA_PATTERN | 752 IEEE80211_VHT_CAP_RX_ANTENNA_PATTERN | 753 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK), 754 .supp_mcs = { 755 .rx_mcs_map = cpu_to_le16(~0), 756 .tx_mcs_map = cpu_to_le16(~0), 757 }, 758}; 759 760struct ieee80211_hw *ieee80211_alloc_hw_nm(size_t priv_data_len, 761 const struct ieee80211_ops *ops, 762 const char *requested_name) 763{ 764 struct ieee80211_local *local; 765 int priv_size, i; 766 struct wiphy *wiphy; 767 bool emulate_chanctx; 768 769 if (WARN_ON(!ops->tx || !ops->start || !ops->stop || !ops->config || 770 !ops->add_interface || !ops->remove_interface || 771 !ops->configure_filter || !ops->wake_tx_queue)) 772 return NULL; 773 774 if (WARN_ON(ops->sta_state && (ops->sta_add || ops->sta_remove))) 775 return NULL; 776 777 if (WARN_ON(!!ops->link_info_changed != !!ops->vif_cfg_changed || 778 (ops->link_info_changed && ops->bss_info_changed))) 779 return NULL; 780 781 /* check all or no channel context operations exist */ 782 if (ops->add_chanctx == ieee80211_emulate_add_chanctx && 783 ops->remove_chanctx == ieee80211_emulate_remove_chanctx && 784 ops->change_chanctx == ieee80211_emulate_change_chanctx) { 785 if (WARN_ON(ops->assign_vif_chanctx || 786 ops->unassign_vif_chanctx)) 787 return NULL; 788 emulate_chanctx = true; 789 } else { 790 if (WARN_ON(ops->add_chanctx == ieee80211_emulate_add_chanctx || 791 ops->remove_chanctx == ieee80211_emulate_remove_chanctx || 792 ops->change_chanctx == ieee80211_emulate_change_chanctx)) 793 return NULL; 794 if (WARN_ON(!ops->add_chanctx || 795 !ops->remove_chanctx || 796 !ops->change_chanctx || 797 !ops->assign_vif_chanctx || 798 !ops->unassign_vif_chanctx)) 799 return NULL; 800 emulate_chanctx = false; 801 } 802 803 /* Ensure 32-byte alignment of our private data and hw private data. 804 * We use the wiphy priv data for both our ieee80211_local and for 805 * the driver's private data 806 * 807 * In memory it'll be like this: 808 * 809 * +-------------------------+ 810 * | struct wiphy | 811 * +-------------------------+ 812 * | struct ieee80211_local | 813 * +-------------------------+ 814 * | driver's private data | 815 * +-------------------------+ 816 * 817 */ 818 priv_size = ALIGN(sizeof(*local), NETDEV_ALIGN) + priv_data_len; 819 820 wiphy = wiphy_new_nm(&mac80211_config_ops, priv_size, requested_name); 821 822 if (!wiphy) 823 return NULL; 824 825 wiphy->mgmt_stypes = ieee80211_default_mgmt_stypes; 826 827 wiphy->privid = mac80211_wiphy_privid; 828 829 wiphy->flags |= WIPHY_FLAG_NETNS_OK | 830 WIPHY_FLAG_4ADDR_AP | 831 WIPHY_FLAG_4ADDR_STATION | 832 WIPHY_FLAG_REPORTS_OBSS | 833 WIPHY_FLAG_OFFCHAN_TX; 834 835 if (emulate_chanctx || ops->remain_on_channel) 836 wiphy->flags |= WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL; 837 838 wiphy->features |= NL80211_FEATURE_SK_TX_STATUS | 839 NL80211_FEATURE_SAE | 840 NL80211_FEATURE_HT_IBSS | 841 NL80211_FEATURE_VIF_TXPOWER | 842 NL80211_FEATURE_MAC_ON_CREATE | 843 NL80211_FEATURE_USERSPACE_MPM | 844 NL80211_FEATURE_FULL_AP_CLIENT_STATE; 845 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_FILS_STA); 846 wiphy_ext_feature_set(wiphy, 847 NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211); 848 wiphy_ext_feature_set(wiphy, 849 NL80211_EXT_FEATURE_CONTROL_PORT_NO_PREAUTH); 850 wiphy_ext_feature_set(wiphy, 851 NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211_TX_STATUS); 852 wiphy_ext_feature_set(wiphy, 853 NL80211_EXT_FEATURE_SCAN_FREQ_KHZ); 854 wiphy_ext_feature_set(wiphy, 855 NL80211_EXT_FEATURE_POWERED_ADDR_CHANGE); 856 857 if (!ops->hw_scan) { 858 wiphy->features |= NL80211_FEATURE_LOW_PRIORITY_SCAN | 859 NL80211_FEATURE_AP_SCAN; 860 /* 861 * if the driver behaves correctly using the probe request 862 * (template) from mac80211, then both of these should be 863 * supported even with hw scan - but let drivers opt in. 864 */ 865 wiphy_ext_feature_set(wiphy, 866 NL80211_EXT_FEATURE_SCAN_RANDOM_SN); 867 wiphy_ext_feature_set(wiphy, 868 NL80211_EXT_FEATURE_SCAN_MIN_PREQ_CONTENT); 869 } 870 871 if (!ops->set_key) { 872 wiphy->flags |= WIPHY_FLAG_IBSS_RSN; 873 wiphy_ext_feature_set(wiphy, 874 NL80211_EXT_FEATURE_SPP_AMSDU_SUPPORT); 875 } 876 877 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_TXQS); 878 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_RRM); 879 880 wiphy->bss_priv_size = sizeof(struct ieee80211_bss); 881 882 local = wiphy_priv(wiphy); 883 884 if (sta_info_init(local)) 885 goto err_free; 886 887 local->hw.wiphy = wiphy; 888 889 local->hw.priv = (char *)local + ALIGN(sizeof(*local), NETDEV_ALIGN); 890 891 local->ops = ops; 892 local->emulate_chanctx = emulate_chanctx; 893 894 if (emulate_chanctx) 895 ieee80211_hw_set(&local->hw, CHANCTX_STA_CSA); 896 897 /* 898 * We need a bit of data queued to build aggregates properly, so 899 * instruct the TCP stack to allow more than a single ms of data 900 * to be queued in the stack. The value is a bit-shift of 1 901 * second, so 7 is ~8ms of queued data. Only affects local TCP 902 * sockets. 903 * This is the default, anyhow - drivers may need to override it 904 * for local reasons (longer buffers, longer completion time, or 905 * similar). 906 */ 907 local->hw.tx_sk_pacing_shift = 7; 908 909 /* set up some defaults */ 910 local->hw.queues = 1; 911 local->hw.max_rates = 1; 912 local->hw.max_report_rates = 0; 913 local->hw.max_rx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF_HT; 914 local->hw.max_tx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF_HT; 915 local->hw.offchannel_tx_hw_queue = IEEE80211_INVAL_HW_QUEUE; 916 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long; 917 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short; 918 local->hw.radiotap_mcs_details = IEEE80211_RADIOTAP_MCS_HAVE_MCS | 919 IEEE80211_RADIOTAP_MCS_HAVE_GI | 920 IEEE80211_RADIOTAP_MCS_HAVE_BW; 921 local->hw.radiotap_vht_details = IEEE80211_RADIOTAP_VHT_KNOWN_GI | 922 IEEE80211_RADIOTAP_VHT_KNOWN_BANDWIDTH; 923 local->hw.uapsd_queues = IEEE80211_DEFAULT_UAPSD_QUEUES; 924 local->hw.uapsd_max_sp_len = IEEE80211_DEFAULT_MAX_SP_LEN; 925 local->hw.max_mtu = IEEE80211_MAX_DATA_LEN; 926 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL; 927 wiphy->ht_capa_mod_mask = &mac80211_ht_capa_mod_mask; 928 wiphy->vht_capa_mod_mask = &mac80211_vht_capa_mod_mask; 929 930 local->ext_capa[7] = WLAN_EXT_CAPA8_OPMODE_NOTIF; 931 932 wiphy->extended_capabilities = local->ext_capa; 933 wiphy->extended_capabilities_mask = local->ext_capa; 934 wiphy->extended_capabilities_len = 935 ARRAY_SIZE(local->ext_capa); 936 937 INIT_LIST_HEAD(&local->interfaces); 938 INIT_LIST_HEAD(&local->mon_list); 939 940 __hw_addr_init(&local->mc_list); 941 942 mutex_init(&local->iflist_mtx); 943 spin_lock_init(&local->filter_lock); 944 spin_lock_init(&local->rx_path_lock); 945 spin_lock_init(&local->queue_stop_reason_lock); 946 947 for (i = 0; i < IEEE80211_NUM_ACS; i++) { 948 INIT_LIST_HEAD(&local->active_txqs[i]); 949 spin_lock_init(&local->active_txq_lock[i]); 950 local->aql_txq_limit_low[i] = IEEE80211_DEFAULT_AQL_TXQ_LIMIT_L; 951 local->aql_txq_limit_high[i] = 952 IEEE80211_DEFAULT_AQL_TXQ_LIMIT_H; 953 atomic_set(&local->aql_ac_pending_airtime[i], 0); 954 } 955 956 local->airtime_flags = AIRTIME_USE_TX | AIRTIME_USE_RX; 957 local->aql_threshold = IEEE80211_AQL_THRESHOLD; 958 atomic_set(&local->aql_total_pending_airtime, 0); 959 960 spin_lock_init(&local->handle_wake_tx_queue_lock); 961 962 INIT_LIST_HEAD(&local->chanctx_list); 963 964 wiphy_delayed_work_init(&local->scan_work, ieee80211_scan_work); 965 966 INIT_WORK(&local->restart_work, ieee80211_restart_work); 967 968 wiphy_work_init(&local->radar_detected_work, 969 ieee80211_dfs_radar_detected_work); 970 971 wiphy_work_init(&local->reconfig_filter, ieee80211_reconfig_filter); 972 973 wiphy_work_init(&local->dynamic_ps_enable_work, 974 ieee80211_dynamic_ps_enable_work); 975 wiphy_work_init(&local->dynamic_ps_disable_work, 976 ieee80211_dynamic_ps_disable_work); 977 timer_setup(&local->dynamic_ps_timer, ieee80211_dynamic_ps_timer, 0); 978 979 wiphy_work_init(&local->sched_scan_stopped_work, 980 ieee80211_sched_scan_stopped_work); 981 982 spin_lock_init(&local->ack_status_lock); 983 idr_init(&local->ack_status_frames); 984 985 for (i = 0; i < IEEE80211_MAX_QUEUES; i++) { 986 skb_queue_head_init(&local->pending[i]); 987 atomic_set(&local->agg_queue_stop[i], 0); 988 } 989 tasklet_setup(&local->tx_pending_tasklet, ieee80211_tx_pending); 990 tasklet_setup(&local->wake_txqs_tasklet, ieee80211_wake_txqs); 991 tasklet_setup(&local->tasklet, ieee80211_tasklet_handler); 992 993 skb_queue_head_init(&local->skb_queue); 994 skb_queue_head_init(&local->skb_queue_unreliable); 995 996 ieee80211_alloc_led_names(local); 997 998 ieee80211_roc_setup(local); 999 1000 local->hw.radiotap_timestamp.units_pos = -1; 1001 local->hw.radiotap_timestamp.accuracy = -1; 1002 1003 return &local->hw; 1004 err_free: 1005 wiphy_free(wiphy); 1006 return NULL; 1007} 1008EXPORT_SYMBOL(ieee80211_alloc_hw_nm); 1009 1010static int ieee80211_init_cipher_suites(struct ieee80211_local *local) 1011{ 1012 bool have_wep = !fips_enabled; /* FIPS does not permit the use of RC4 */ 1013 bool have_mfp = ieee80211_hw_check(&local->hw, MFP_CAPABLE); 1014 int r = 0, w = 0; 1015 u32 *suites; 1016 static const u32 cipher_suites[] = { 1017 /* keep WEP first, it may be removed below */ 1018 WLAN_CIPHER_SUITE_WEP40, 1019 WLAN_CIPHER_SUITE_WEP104, 1020 WLAN_CIPHER_SUITE_TKIP, 1021 WLAN_CIPHER_SUITE_CCMP, 1022 WLAN_CIPHER_SUITE_CCMP_256, 1023 WLAN_CIPHER_SUITE_GCMP, 1024 WLAN_CIPHER_SUITE_GCMP_256, 1025 1026 /* keep last -- depends on hw flags! */ 1027 WLAN_CIPHER_SUITE_AES_CMAC, 1028 WLAN_CIPHER_SUITE_BIP_CMAC_256, 1029 WLAN_CIPHER_SUITE_BIP_GMAC_128, 1030 WLAN_CIPHER_SUITE_BIP_GMAC_256, 1031 }; 1032 1033 if (ieee80211_hw_check(&local->hw, SW_CRYPTO_CONTROL) || 1034 local->hw.wiphy->cipher_suites) { 1035 /* If the driver advertises, or doesn't support SW crypto, 1036 * we only need to remove WEP if necessary. 1037 */ 1038 if (have_wep) 1039 return 0; 1040 1041 /* well if it has _no_ ciphers ... fine */ 1042 if (!local->hw.wiphy->n_cipher_suites) 1043 return 0; 1044 1045 /* Driver provides cipher suites, but we need to exclude WEP */ 1046 suites = kmemdup(local->hw.wiphy->cipher_suites, 1047 sizeof(u32) * local->hw.wiphy->n_cipher_suites, 1048 GFP_KERNEL); 1049 if (!suites) 1050 return -ENOMEM; 1051 1052 for (r = 0; r < local->hw.wiphy->n_cipher_suites; r++) { 1053 u32 suite = local->hw.wiphy->cipher_suites[r]; 1054 1055 if (suite == WLAN_CIPHER_SUITE_WEP40 || 1056 suite == WLAN_CIPHER_SUITE_WEP104) 1057 continue; 1058 suites[w++] = suite; 1059 } 1060 } else { 1061 /* assign the (software supported and perhaps offloaded) 1062 * cipher suites 1063 */ 1064 local->hw.wiphy->cipher_suites = cipher_suites; 1065 local->hw.wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites); 1066 1067 if (!have_mfp) 1068 local->hw.wiphy->n_cipher_suites -= 4; 1069 1070 if (!have_wep) { 1071 local->hw.wiphy->cipher_suites += 2; 1072 local->hw.wiphy->n_cipher_suites -= 2; 1073 } 1074 1075 /* not dynamically allocated, so just return */ 1076 return 0; 1077 } 1078 1079 local->hw.wiphy->cipher_suites = suites; 1080 local->hw.wiphy->n_cipher_suites = w; 1081 local->wiphy_ciphers_allocated = true; 1082 1083 return 0; 1084} 1085 1086int ieee80211_register_hw(struct ieee80211_hw *hw) 1087{ 1088 struct ieee80211_local *local = hw_to_local(hw); 1089 int result, i; 1090 enum nl80211_band band; 1091 int channels, max_bitrates; 1092 bool supp_ht, supp_vht, supp_he, supp_eht; 1093 struct cfg80211_chan_def dflt_chandef = {}; 1094 1095 if (ieee80211_hw_check(hw, QUEUE_CONTROL) && 1096 (local->hw.offchannel_tx_hw_queue == IEEE80211_INVAL_HW_QUEUE || 1097 local->hw.offchannel_tx_hw_queue >= local->hw.queues)) 1098 return -EINVAL; 1099 1100 if ((hw->wiphy->features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH) && 1101 (!local->ops->tdls_channel_switch || 1102 !local->ops->tdls_cancel_channel_switch || 1103 !local->ops->tdls_recv_channel_switch)) 1104 return -EOPNOTSUPP; 1105 1106 if (WARN_ON(ieee80211_hw_check(hw, SUPPORTS_TX_FRAG) && 1107 !local->ops->set_frag_threshold)) 1108 return -EINVAL; 1109 1110 if (WARN_ON(local->hw.wiphy->interface_modes & 1111 BIT(NL80211_IFTYPE_NAN) && 1112 (!local->ops->start_nan || !local->ops->stop_nan))) 1113 return -EINVAL; 1114 1115 if (hw->wiphy->flags & WIPHY_FLAG_SUPPORTS_MLO) { 1116 /* 1117 * For drivers capable of doing MLO, assume modern driver 1118 * or firmware facilities, so software doesn't have to do 1119 * as much, e.g. monitoring beacons would be hard if we 1120 * might not even know which link is active at which time. 1121 */ 1122 if (WARN_ON(local->emulate_chanctx)) 1123 return -EINVAL; 1124 1125 if (WARN_ON(!local->ops->link_info_changed)) 1126 return -EINVAL; 1127 1128 if (WARN_ON(!ieee80211_hw_check(hw, HAS_RATE_CONTROL))) 1129 return -EINVAL; 1130 1131 if (WARN_ON(!ieee80211_hw_check(hw, AMPDU_AGGREGATION))) 1132 return -EINVAL; 1133 1134 if (WARN_ON(ieee80211_hw_check(hw, HOST_BROADCAST_PS_BUFFERING))) 1135 return -EINVAL; 1136 1137 if (WARN_ON(ieee80211_hw_check(hw, SUPPORTS_PS) && 1138 (!ieee80211_hw_check(hw, SUPPORTS_DYNAMIC_PS) || 1139 ieee80211_hw_check(hw, PS_NULLFUNC_STACK)))) 1140 return -EINVAL; 1141 1142 if (WARN_ON(!ieee80211_hw_check(hw, MFP_CAPABLE))) 1143 return -EINVAL; 1144 1145 if (WARN_ON(!ieee80211_hw_check(hw, CONNECTION_MONITOR))) 1146 return -EINVAL; 1147 1148 if (WARN_ON(ieee80211_hw_check(hw, NEED_DTIM_BEFORE_ASSOC))) 1149 return -EINVAL; 1150 1151 if (WARN_ON(ieee80211_hw_check(hw, TIMING_BEACON_ONLY))) 1152 return -EINVAL; 1153 1154 if (WARN_ON(!ieee80211_hw_check(hw, AP_LINK_PS))) 1155 return -EINVAL; 1156 1157 if (WARN_ON(ieee80211_hw_check(hw, DEAUTH_NEED_MGD_TX_PREP))) 1158 return -EINVAL; 1159 } 1160 1161#ifdef CONFIG_PM 1162 if (hw->wiphy->wowlan && (!local->ops->suspend || !local->ops->resume)) 1163 return -EINVAL; 1164#endif 1165 1166 if (local->emulate_chanctx) { 1167 for (i = 0; i < local->hw.wiphy->n_iface_combinations; i++) { 1168 const struct ieee80211_iface_combination *comb; 1169 1170 comb = &local->hw.wiphy->iface_combinations[i]; 1171 1172 if (comb->num_different_channels > 1) 1173 return -EINVAL; 1174 } 1175 } else { 1176 /* DFS is not supported with multi-channel combinations yet */ 1177 for (i = 0; i < local->hw.wiphy->n_iface_combinations; i++) { 1178 const struct ieee80211_iface_combination *comb; 1179 1180 comb = &local->hw.wiphy->iface_combinations[i]; 1181 1182 if (comb->radar_detect_widths && 1183 comb->num_different_channels > 1) 1184 return -EINVAL; 1185 } 1186 } 1187 1188 /* Only HW csum features are currently compatible with mac80211 */ 1189 if (WARN_ON(hw->netdev_features & ~MAC80211_SUPPORTED_FEATURES)) 1190 return -EINVAL; 1191 1192 if (hw->max_report_rates == 0) 1193 hw->max_report_rates = hw->max_rates; 1194 1195 local->rx_chains = 1; 1196 1197 /* 1198 * generic code guarantees at least one band, 1199 * set this very early because much code assumes 1200 * that hw.conf.channel is assigned 1201 */ 1202 channels = 0; 1203 max_bitrates = 0; 1204 supp_ht = false; 1205 supp_vht = false; 1206 supp_he = false; 1207 supp_eht = false; 1208 for (band = 0; band < NUM_NL80211_BANDS; band++) { 1209 const struct ieee80211_sband_iftype_data *iftd; 1210 struct ieee80211_supported_band *sband; 1211 1212 sband = local->hw.wiphy->bands[band]; 1213 if (!sband) 1214 continue; 1215 1216 if (!dflt_chandef.chan) { 1217 /* 1218 * Assign the first enabled channel to dflt_chandef 1219 * from the list of channels 1220 */ 1221 for (i = 0; i < sband->n_channels; i++) 1222 if (!(sband->channels[i].flags & 1223 IEEE80211_CHAN_DISABLED)) 1224 break; 1225 /* if none found then use the first anyway */ 1226 if (i == sband->n_channels) 1227 i = 0; 1228 cfg80211_chandef_create(&dflt_chandef, 1229 &sband->channels[i], 1230 NL80211_CHAN_NO_HT); 1231 /* init channel we're on */ 1232 local->monitor_chanreq.oper = dflt_chandef; 1233 if (local->emulate_chanctx) { 1234 local->dflt_chandef = dflt_chandef; 1235 local->hw.conf.chandef = dflt_chandef; 1236 } 1237 } 1238 1239 channels += sband->n_channels; 1240 1241 /* 1242 * Due to the way the aggregation code handles this and it 1243 * being an HT capability, we can't really support delayed 1244 * BA in MLO (yet). 1245 */ 1246 if (WARN_ON(sband->ht_cap.ht_supported && 1247 (sband->ht_cap.cap & IEEE80211_HT_CAP_DELAY_BA) && 1248 hw->wiphy->flags & WIPHY_FLAG_SUPPORTS_MLO)) 1249 return -EINVAL; 1250 1251 if (max_bitrates < sband->n_bitrates) 1252 max_bitrates = sband->n_bitrates; 1253 supp_ht = supp_ht || sband->ht_cap.ht_supported; 1254 supp_vht = supp_vht || sband->vht_cap.vht_supported; 1255 1256 for_each_sband_iftype_data(sband, i, iftd) { 1257 u8 he_40_mhz_cap; 1258 1259 supp_he = supp_he || iftd->he_cap.has_he; 1260 supp_eht = supp_eht || iftd->eht_cap.has_eht; 1261 1262 if (band == NL80211_BAND_2GHZ) 1263 he_40_mhz_cap = 1264 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_IN_2G; 1265 else 1266 he_40_mhz_cap = 1267 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G; 1268 1269 /* currently no support for HE client where HT has 40 MHz but not HT */ 1270 if (iftd->he_cap.has_he && 1271 iftd->types_mask & (BIT(NL80211_IFTYPE_STATION) | 1272 BIT(NL80211_IFTYPE_P2P_CLIENT)) && 1273 sband->ht_cap.ht_supported && 1274 sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 && 1275 !(iftd->he_cap.he_cap_elem.phy_cap_info[0] & he_40_mhz_cap)) 1276 return -EINVAL; 1277 } 1278 1279 /* HT, VHT, HE require QoS, thus >= 4 queues */ 1280 if (WARN_ON(local->hw.queues < IEEE80211_NUM_ACS && 1281 (supp_ht || supp_vht || supp_he))) 1282 return -EINVAL; 1283 1284 /* EHT requires HE support */ 1285 if (WARN_ON(supp_eht && !supp_he)) 1286 return -EINVAL; 1287 1288 if (!sband->ht_cap.ht_supported) 1289 continue; 1290 1291 /* TODO: consider VHT for RX chains, hopefully it's the same */ 1292 local->rx_chains = 1293 max(ieee80211_mcs_to_chains(&sband->ht_cap.mcs), 1294 local->rx_chains); 1295 1296 /* no need to mask, SM_PS_DISABLED has all bits set */ 1297 sband->ht_cap.cap |= WLAN_HT_CAP_SM_PS_DISABLED << 1298 IEEE80211_HT_CAP_SM_PS_SHIFT; 1299 } 1300 1301 /* if low-level driver supports AP, we also support VLAN. 1302 * drivers advertising SW_CRYPTO_CONTROL should enable AP_VLAN 1303 * based on their support to transmit SW encrypted packets. 1304 */ 1305 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_AP) && 1306 !ieee80211_hw_check(&local->hw, SW_CRYPTO_CONTROL)) { 1307 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP_VLAN); 1308 hw->wiphy->software_iftypes |= BIT(NL80211_IFTYPE_AP_VLAN); 1309 } 1310 1311 /* mac80211 always supports monitor */ 1312 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR); 1313 hw->wiphy->software_iftypes |= BIT(NL80211_IFTYPE_MONITOR); 1314 1315 /* mac80211 doesn't support more than one IBSS interface right now */ 1316 for (i = 0; i < hw->wiphy->n_iface_combinations; i++) { 1317 const struct ieee80211_iface_combination *c; 1318 int j; 1319 1320 c = &hw->wiphy->iface_combinations[i]; 1321 1322 for (j = 0; j < c->n_limits; j++) 1323 if ((c->limits[j].types & BIT(NL80211_IFTYPE_ADHOC)) && 1324 c->limits[j].max > 1) 1325 return -EINVAL; 1326 } 1327 1328 local->int_scan_req = kzalloc(sizeof(*local->int_scan_req) + 1329 sizeof(void *) * channels, GFP_KERNEL); 1330 if (!local->int_scan_req) 1331 return -ENOMEM; 1332 1333 eth_broadcast_addr(local->int_scan_req->bssid); 1334 1335 for (band = 0; band < NUM_NL80211_BANDS; band++) { 1336 if (!local->hw.wiphy->bands[band]) 1337 continue; 1338 local->int_scan_req->rates[band] = (u32) -1; 1339 } 1340 1341#ifndef CONFIG_MAC80211_MESH 1342 /* mesh depends on Kconfig, but drivers should set it if they want */ 1343 local->hw.wiphy->interface_modes &= ~BIT(NL80211_IFTYPE_MESH_POINT); 1344#endif 1345 1346 /* if the underlying driver supports mesh, mac80211 will (at least) 1347 * provide routing of mesh authentication frames to userspace */ 1348 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_MESH_POINT)) 1349 local->hw.wiphy->flags |= WIPHY_FLAG_MESH_AUTH; 1350 1351 /* mac80211 supports control port protocol changing */ 1352 local->hw.wiphy->flags |= WIPHY_FLAG_CONTROL_PORT_PROTOCOL; 1353 1354 if (ieee80211_hw_check(&local->hw, SIGNAL_DBM)) { 1355 local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM; 1356 } else if (ieee80211_hw_check(&local->hw, SIGNAL_UNSPEC)) { 1357 local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC; 1358 if (hw->max_signal <= 0) { 1359 result = -EINVAL; 1360 goto fail_workqueue; 1361 } 1362 } 1363 1364 /* Mac80211 and therefore all drivers using SW crypto only 1365 * are able to handle PTK rekeys and Extended Key ID. 1366 */ 1367 if (!local->ops->set_key) { 1368 wiphy_ext_feature_set(local->hw.wiphy, 1369 NL80211_EXT_FEATURE_CAN_REPLACE_PTK0); 1370 wiphy_ext_feature_set(local->hw.wiphy, 1371 NL80211_EXT_FEATURE_EXT_KEY_ID); 1372 } 1373 1374 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_ADHOC)) 1375 wiphy_ext_feature_set(local->hw.wiphy, 1376 NL80211_EXT_FEATURE_DEL_IBSS_STA); 1377 1378 /* 1379 * Calculate scan IE length -- we need this to alloc 1380 * memory and to subtract from the driver limit. It 1381 * includes the DS Params, (extended) supported rates, and HT 1382 * information -- SSID is the driver's responsibility. 1383 */ 1384 local->scan_ies_len = 4 + max_bitrates /* (ext) supp rates */ + 1385 3 /* DS Params */; 1386 if (supp_ht) 1387 local->scan_ies_len += 2 + sizeof(struct ieee80211_ht_cap); 1388 1389 if (supp_vht) 1390 local->scan_ies_len += 1391 2 + sizeof(struct ieee80211_vht_cap); 1392 1393 /* 1394 * HE cap element is variable in size - set len to allow max size */ 1395 if (supp_he) { 1396 local->scan_ies_len += 1397 3 + sizeof(struct ieee80211_he_cap_elem) + 1398 sizeof(struct ieee80211_he_mcs_nss_supp) + 1399 IEEE80211_HE_PPE_THRES_MAX_LEN; 1400 1401 if (supp_eht) 1402 local->scan_ies_len += 1403 3 + sizeof(struct ieee80211_eht_cap_elem) + 1404 sizeof(struct ieee80211_eht_mcs_nss_supp) + 1405 IEEE80211_EHT_PPE_THRES_MAX_LEN; 1406 } 1407 1408 if (!local->ops->hw_scan) { 1409 /* For hw_scan, driver needs to set these up. */ 1410 local->hw.wiphy->max_scan_ssids = 4; 1411 local->hw.wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN; 1412 } 1413 1414 /* 1415 * If the driver supports any scan IEs, then assume the 1416 * limit includes the IEs mac80211 will add, otherwise 1417 * leave it at zero and let the driver sort it out; we 1418 * still pass our IEs to the driver but userspace will 1419 * not be allowed to in that case. 1420 */ 1421 if (local->hw.wiphy->max_scan_ie_len) 1422 local->hw.wiphy->max_scan_ie_len -= local->scan_ies_len; 1423 1424 result = ieee80211_init_cipher_suites(local); 1425 if (result < 0) 1426 goto fail_workqueue; 1427 1428 if (!local->ops->remain_on_channel) 1429 local->hw.wiphy->max_remain_on_channel_duration = 5000; 1430 1431 /* mac80211 based drivers don't support internal TDLS setup */ 1432 if (local->hw.wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS) 1433 local->hw.wiphy->flags |= WIPHY_FLAG_TDLS_EXTERNAL_SETUP; 1434 1435 /* mac80211 supports eCSA, if the driver supports STA CSA at all */ 1436 if (ieee80211_hw_check(&local->hw, CHANCTX_STA_CSA)) 1437 local->ext_capa[0] |= WLAN_EXT_CAPA1_EXT_CHANNEL_SWITCHING; 1438 1439 /* mac80211 supports multi BSSID, if the driver supports it */ 1440 if (ieee80211_hw_check(&local->hw, SUPPORTS_MULTI_BSSID)) { 1441 local->hw.wiphy->support_mbssid = true; 1442 if (ieee80211_hw_check(&local->hw, 1443 SUPPORTS_ONLY_HE_MULTI_BSSID)) 1444 local->hw.wiphy->support_only_he_mbssid = true; 1445 else 1446 local->ext_capa[2] |= 1447 WLAN_EXT_CAPA3_MULTI_BSSID_SUPPORT; 1448 } 1449 1450 local->hw.wiphy->max_num_csa_counters = IEEE80211_MAX_CNTDWN_COUNTERS_NUM; 1451 1452 /* 1453 * We use the number of queues for feature tests (QoS, HT) internally 1454 * so restrict them appropriately. 1455 */ 1456 if (hw->queues > IEEE80211_MAX_QUEUES) 1457 hw->queues = IEEE80211_MAX_QUEUES; 1458 1459 local->workqueue = 1460 alloc_ordered_workqueue("%s", 0, wiphy_name(local->hw.wiphy)); 1461 if (!local->workqueue) { 1462 result = -ENOMEM; 1463 goto fail_workqueue; 1464 } 1465 1466 /* 1467 * The hardware needs headroom for sending the frame, 1468 * and we need some headroom for passing the frame to monitor 1469 * interfaces, but never both at the same time. 1470 */ 1471 local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom, 1472 IEEE80211_TX_STATUS_HEADROOM); 1473 1474 /* 1475 * if the driver doesn't specify a max listen interval we 1476 * use 5 which should be a safe default 1477 */ 1478 if (local->hw.max_listen_interval == 0) 1479 local->hw.max_listen_interval = 5; 1480 1481 local->hw.conf.listen_interval = local->hw.max_listen_interval; 1482 1483 local->dynamic_ps_forced_timeout = -1; 1484 1485 if (!local->hw.max_nan_de_entries) 1486 local->hw.max_nan_de_entries = IEEE80211_MAX_NAN_INSTANCE_ID; 1487 1488 if (!local->hw.weight_multiplier) 1489 local->hw.weight_multiplier = 1; 1490 1491 ieee80211_wep_init(local); 1492 1493 local->hw.conf.flags = IEEE80211_CONF_IDLE; 1494 1495 ieee80211_led_init(local); 1496 1497 result = ieee80211_txq_setup_flows(local); 1498 if (result) 1499 goto fail_flows; 1500 1501 rtnl_lock(); 1502 result = ieee80211_init_rate_ctrl_alg(local, 1503 hw->rate_control_algorithm); 1504 rtnl_unlock(); 1505 if (result < 0) { 1506 wiphy_debug(local->hw.wiphy, 1507 "Failed to initialize rate control algorithm\n"); 1508 goto fail_rate; 1509 } 1510 1511 if (local->rate_ctrl) { 1512 clear_bit(IEEE80211_HW_SUPPORTS_VHT_EXT_NSS_BW, hw->flags); 1513 if (local->rate_ctrl->ops->capa & RATE_CTRL_CAPA_VHT_EXT_NSS_BW) 1514 ieee80211_hw_set(hw, SUPPORTS_VHT_EXT_NSS_BW); 1515 } 1516 1517 /* 1518 * If the VHT capabilities don't have IEEE80211_VHT_EXT_NSS_BW_CAPABLE, 1519 * or have it when we don't, copy the sband structure and set/clear it. 1520 * This is necessary because rate scaling algorithms could be switched 1521 * and have different support values. 1522 * Print a message so that in the common case the reallocation can be 1523 * avoided. 1524 */ 1525 BUILD_BUG_ON(NUM_NL80211_BANDS > 8 * sizeof(local->sband_allocated)); 1526 for (band = 0; band < NUM_NL80211_BANDS; band++) { 1527 struct ieee80211_supported_band *sband; 1528 bool local_cap, ie_cap; 1529 1530 local_cap = ieee80211_hw_check(hw, SUPPORTS_VHT_EXT_NSS_BW); 1531 1532 sband = local->hw.wiphy->bands[band]; 1533 if (!sband || !sband->vht_cap.vht_supported) 1534 continue; 1535 1536 ie_cap = !!(sband->vht_cap.vht_mcs.tx_highest & 1537 cpu_to_le16(IEEE80211_VHT_EXT_NSS_BW_CAPABLE)); 1538 1539 if (local_cap == ie_cap) 1540 continue; 1541 1542 sband = kmemdup(sband, sizeof(*sband), GFP_KERNEL); 1543 if (!sband) { 1544 result = -ENOMEM; 1545 goto fail_rate; 1546 } 1547 1548 wiphy_dbg(hw->wiphy, "copying sband (band %d) due to VHT EXT NSS BW flag\n", 1549 band); 1550 1551 sband->vht_cap.vht_mcs.tx_highest ^= 1552 cpu_to_le16(IEEE80211_VHT_EXT_NSS_BW_CAPABLE); 1553 1554 local->hw.wiphy->bands[band] = sband; 1555 local->sband_allocated |= BIT(band); 1556 } 1557 1558 result = wiphy_register(local->hw.wiphy); 1559 if (result < 0) 1560 goto fail_wiphy_register; 1561 1562 debugfs_hw_add(local); 1563 rate_control_add_debugfs(local); 1564 1565 ieee80211_check_wbrf_support(local); 1566 1567 rtnl_lock(); 1568 wiphy_lock(hw->wiphy); 1569 1570 /* add one default STA interface if supported */ 1571 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_STATION) && 1572 !ieee80211_hw_check(hw, NO_AUTO_VIF)) { 1573 struct vif_params params = {0}; 1574 1575 result = ieee80211_if_add(local, "wlan%d", NET_NAME_ENUM, NULL, 1576 NL80211_IFTYPE_STATION, ¶ms); 1577 if (result) 1578 wiphy_warn(local->hw.wiphy, 1579 "Failed to add default virtual iface\n"); 1580 } 1581 1582 wiphy_unlock(hw->wiphy); 1583 rtnl_unlock(); 1584 1585#ifdef CONFIG_INET 1586 local->ifa_notifier.notifier_call = ieee80211_ifa_changed; 1587 result = register_inetaddr_notifier(&local->ifa_notifier); 1588 if (result) 1589 goto fail_ifa; 1590#endif 1591 1592#if IS_ENABLED(CONFIG_IPV6) 1593 local->ifa6_notifier.notifier_call = ieee80211_ifa6_changed; 1594 result = register_inet6addr_notifier(&local->ifa6_notifier); 1595 if (result) 1596 goto fail_ifa6; 1597#endif 1598 1599 return 0; 1600 1601#if IS_ENABLED(CONFIG_IPV6) 1602 fail_ifa6: 1603#ifdef CONFIG_INET 1604 unregister_inetaddr_notifier(&local->ifa_notifier); 1605#endif 1606#endif 1607#if defined(CONFIG_INET) || defined(CONFIG_IPV6) 1608 fail_ifa: 1609#endif 1610 wiphy_unregister(local->hw.wiphy); 1611 fail_wiphy_register: 1612 rtnl_lock(); 1613 rate_control_deinitialize(local); 1614 ieee80211_remove_interfaces(local); 1615 rtnl_unlock(); 1616 fail_rate: 1617 ieee80211_txq_teardown_flows(local); 1618 fail_flows: 1619 ieee80211_led_exit(local); 1620 destroy_workqueue(local->workqueue); 1621 fail_workqueue: 1622 if (local->wiphy_ciphers_allocated) { 1623 kfree(local->hw.wiphy->cipher_suites); 1624 local->wiphy_ciphers_allocated = false; 1625 } 1626 kfree(local->int_scan_req); 1627 return result; 1628} 1629EXPORT_SYMBOL(ieee80211_register_hw); 1630 1631void ieee80211_unregister_hw(struct ieee80211_hw *hw) 1632{ 1633 struct ieee80211_local *local = hw_to_local(hw); 1634 1635 tasklet_kill(&local->tx_pending_tasklet); 1636 tasklet_kill(&local->tasklet); 1637 1638#ifdef CONFIG_INET 1639 unregister_inetaddr_notifier(&local->ifa_notifier); 1640#endif 1641#if IS_ENABLED(CONFIG_IPV6) 1642 unregister_inet6addr_notifier(&local->ifa6_notifier); 1643#endif 1644 1645 rtnl_lock(); 1646 1647 /* 1648 * At this point, interface list manipulations are fine 1649 * because the driver cannot be handing us frames any 1650 * more and the tasklet is killed. 1651 */ 1652 ieee80211_remove_interfaces(local); 1653 1654 ieee80211_txq_teardown_flows(local); 1655 1656 wiphy_lock(local->hw.wiphy); 1657 wiphy_delayed_work_cancel(local->hw.wiphy, &local->roc_work); 1658 wiphy_work_cancel(local->hw.wiphy, &local->reconfig_filter); 1659 wiphy_work_cancel(local->hw.wiphy, &local->sched_scan_stopped_work); 1660 wiphy_work_cancel(local->hw.wiphy, &local->radar_detected_work); 1661 wiphy_unlock(local->hw.wiphy); 1662 rtnl_unlock(); 1663 1664 cancel_work_sync(&local->restart_work); 1665 1666 ieee80211_clear_tx_pending(local); 1667 rate_control_deinitialize(local); 1668 1669 if (skb_queue_len(&local->skb_queue) || 1670 skb_queue_len(&local->skb_queue_unreliable)) 1671 wiphy_warn(local->hw.wiphy, "skb_queue not empty\n"); 1672 skb_queue_purge(&local->skb_queue); 1673 skb_queue_purge(&local->skb_queue_unreliable); 1674 1675 wiphy_unregister(local->hw.wiphy); 1676 destroy_workqueue(local->workqueue); 1677 ieee80211_led_exit(local); 1678 kfree(local->int_scan_req); 1679} 1680EXPORT_SYMBOL(ieee80211_unregister_hw); 1681 1682static int ieee80211_free_ack_frame(int id, void *p, void *data) 1683{ 1684 WARN_ONCE(1, "Have pending ack frames!\n"); 1685 kfree_skb(p); 1686 return 0; 1687} 1688 1689void ieee80211_free_hw(struct ieee80211_hw *hw) 1690{ 1691 struct ieee80211_local *local = hw_to_local(hw); 1692 enum nl80211_band band; 1693 1694 mutex_destroy(&local->iflist_mtx); 1695 1696 if (local->wiphy_ciphers_allocated) { 1697 kfree(local->hw.wiphy->cipher_suites); 1698 local->wiphy_ciphers_allocated = false; 1699 } 1700 1701 idr_for_each(&local->ack_status_frames, 1702 ieee80211_free_ack_frame, NULL); 1703 idr_destroy(&local->ack_status_frames); 1704 1705 sta_info_stop(local); 1706 1707 ieee80211_free_led_names(local); 1708 1709 for (band = 0; band < NUM_NL80211_BANDS; band++) { 1710 if (!(local->sband_allocated & BIT(band))) 1711 continue; 1712 kfree(local->hw.wiphy->bands[band]); 1713 } 1714 1715 wiphy_free(local->hw.wiphy); 1716} 1717EXPORT_SYMBOL(ieee80211_free_hw); 1718 1719static const char * const drop_reasons_monitor[] = { 1720#define V(x) #x, 1721 [0] = "RX_DROP_MONITOR", 1722 MAC80211_DROP_REASONS_MONITOR(V) 1723}; 1724 1725static struct drop_reason_list drop_reason_list_monitor = { 1726 .reasons = drop_reasons_monitor, 1727 .n_reasons = ARRAY_SIZE(drop_reasons_monitor), 1728}; 1729 1730static const char * const drop_reasons_unusable[] = { 1731 [0] = "RX_DROP_UNUSABLE", 1732 MAC80211_DROP_REASONS_UNUSABLE(V) 1733#undef V 1734}; 1735 1736static struct drop_reason_list drop_reason_list_unusable = { 1737 .reasons = drop_reasons_unusable, 1738 .n_reasons = ARRAY_SIZE(drop_reasons_unusable), 1739}; 1740 1741static int __init ieee80211_init(void) 1742{ 1743 struct sk_buff *skb; 1744 int ret; 1745 1746 BUILD_BUG_ON(sizeof(struct ieee80211_tx_info) > sizeof(skb->cb)); 1747 BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, driver_data) + 1748 IEEE80211_TX_INFO_DRIVER_DATA_SIZE > sizeof(skb->cb)); 1749 1750 ret = rc80211_minstrel_init(); 1751 if (ret) 1752 return ret; 1753 1754 ret = ieee80211_iface_init(); 1755 if (ret) 1756 goto err_netdev; 1757 1758 drop_reasons_register_subsys(SKB_DROP_REASON_SUBSYS_MAC80211_MONITOR, 1759 &drop_reason_list_monitor); 1760 drop_reasons_register_subsys(SKB_DROP_REASON_SUBSYS_MAC80211_UNUSABLE, 1761 &drop_reason_list_unusable); 1762 1763 return 0; 1764 err_netdev: 1765 rc80211_minstrel_exit(); 1766 1767 return ret; 1768} 1769 1770static void __exit ieee80211_exit(void) 1771{ 1772 rc80211_minstrel_exit(); 1773 1774 ieee80211s_stop(); 1775 1776 ieee80211_iface_exit(); 1777 1778 drop_reasons_unregister_subsys(SKB_DROP_REASON_SUBSYS_MAC80211_MONITOR); 1779 drop_reasons_unregister_subsys(SKB_DROP_REASON_SUBSYS_MAC80211_UNUSABLE); 1780 1781 rcu_barrier(); 1782} 1783 1784 1785subsys_initcall(ieee80211_init); 1786module_exit(ieee80211_exit); 1787 1788MODULE_DESCRIPTION("IEEE 802.11 subsystem"); 1789MODULE_LICENSE("GPL"); 1790