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 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); 170 171 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 } 190 191 int 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 */ 224 static 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 } 238 239 int 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 } 249 250 void 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 } 272 273 int 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 } 282 EXPORT_SYMBOL(ieee80211_emulate_add_chanctx); 283 284 void 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 } 293 EXPORT_SYMBOL(ieee80211_emulate_remove_chanctx); 294 295 void 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 } 305 EXPORT_SYMBOL(ieee80211_emulate_change_chanctx); 306 307 int 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 } 322 EXPORT_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) 332 333 void 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 WARN_ON_ONCE(ieee80211_vif_is_mld(&sdata->vif)); 341 342 if (!changed || sdata->vif.type == NL80211_IFTYPE_AP_VLAN) 343 return; 344 345 if (WARN_ON_ONCE(changed & (BSS_CHANGED_BEACON | 346 BSS_CHANGED_BEACON_ENABLED) && 347 sdata->vif.type != NL80211_IFTYPE_AP && 348 sdata->vif.type != NL80211_IFTYPE_ADHOC && 349 sdata->vif.type != NL80211_IFTYPE_MESH_POINT && 350 sdata->vif.type != NL80211_IFTYPE_OCB)) 351 return; 352 353 if (WARN_ON_ONCE(sdata->vif.type == NL80211_IFTYPE_P2P_DEVICE || 354 sdata->vif.type == NL80211_IFTYPE_NAN || 355 (sdata->vif.type == NL80211_IFTYPE_MONITOR && 356 !sdata->vif.bss_conf.mu_mimo_owner && 357 !(changed & BSS_CHANGED_TXPOWER)))) 358 return; 359 360 if (!check_sdata_in_driver(sdata)) 361 return; 362 363 if (changed & BSS_CHANGED_VIF_CFG_FLAGS) { 364 u64 ch = changed & BSS_CHANGED_VIF_CFG_FLAGS; 365 366 trace_drv_vif_cfg_changed(local, sdata, changed); 367 if (local->ops->vif_cfg_changed) 368 local->ops->vif_cfg_changed(&local->hw, &sdata->vif, ch); 369 } 370 371 if (changed & ~BSS_CHANGED_VIF_CFG_FLAGS) { 372 u64 ch = changed & ~BSS_CHANGED_VIF_CFG_FLAGS; 373 374 trace_drv_link_info_changed(local, sdata, &sdata->vif.bss_conf, 375 changed); 376 if (local->ops->link_info_changed) 377 local->ops->link_info_changed(&local->hw, &sdata->vif, 378 &sdata->vif.bss_conf, ch); 379 } 380 381 if (local->ops->bss_info_changed) 382 local->ops->bss_info_changed(&local->hw, &sdata->vif, 383 &sdata->vif.bss_conf, changed); 384 trace_drv_return_void(local); 385 } 386 387 void ieee80211_vif_cfg_change_notify(struct ieee80211_sub_if_data *sdata, 388 u64 changed) 389 { 390 struct ieee80211_local *local = sdata->local; 391 392 WARN_ON_ONCE(changed & ~BSS_CHANGED_VIF_CFG_FLAGS); 393 394 if (!changed || sdata->vif.type == NL80211_IFTYPE_AP_VLAN) 395 return; 396 397 drv_vif_cfg_changed(local, sdata, changed); 398 } 399 400 void ieee80211_link_info_change_notify(struct ieee80211_sub_if_data *sdata, 401 struct ieee80211_link_data *link, 402 u64 changed) 403 { 404 struct ieee80211_local *local = sdata->local; 405 406 WARN_ON_ONCE(changed & BSS_CHANGED_VIF_CFG_FLAGS); 407 408 if (!changed || sdata->vif.type == NL80211_IFTYPE_AP_VLAN) 409 return; 410 411 if (!check_sdata_in_driver(sdata)) 412 return; 413 414 drv_link_info_changed(local, sdata, link->conf, link->link_id, changed); 415 } 416 417 u64 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata) 418 { 419 sdata->vif.bss_conf.use_cts_prot = false; 420 sdata->vif.bss_conf.use_short_preamble = false; 421 sdata->vif.bss_conf.use_short_slot = false; 422 return BSS_CHANGED_ERP_CTS_PROT | 423 BSS_CHANGED_ERP_PREAMBLE | 424 BSS_CHANGED_ERP_SLOT; 425 } 426 427 /* context: requires softirqs disabled */ 428 void ieee80211_handle_queued_frames(struct ieee80211_local *local) 429 { 430 struct sk_buff *skb; 431 432 while ((skb = skb_dequeue(&local->skb_queue)) || 433 (skb = skb_dequeue(&local->skb_queue_unreliable))) { 434 switch (skb->pkt_type) { 435 case IEEE80211_RX_MSG: 436 /* Clear skb->pkt_type in order to not confuse kernel 437 * netstack. */ 438 skb->pkt_type = 0; 439 ieee80211_rx(&local->hw, skb); 440 break; 441 case IEEE80211_TX_STATUS_MSG: 442 skb->pkt_type = 0; 443 ieee80211_tx_status_skb(&local->hw, skb); 444 break; 445 default: 446 WARN(1, "mac80211: Packet is of unknown type %d\n", 447 skb->pkt_type); 448 dev_kfree_skb(skb); 449 break; 450 } 451 } 452 } 453 454 static void ieee80211_tasklet_handler(struct tasklet_struct *t) 455 { 456 struct ieee80211_local *local = from_tasklet(local, t, tasklet); 457 458 ieee80211_handle_queued_frames(local); 459 } 460 461 static void ieee80211_restart_work(struct work_struct *work) 462 { 463 struct ieee80211_local *local = 464 container_of(work, struct ieee80211_local, restart_work); 465 struct ieee80211_sub_if_data *sdata; 466 int ret; 467 468 flush_workqueue(local->workqueue); 469 470 rtnl_lock(); 471 /* we might do interface manipulations, so need both */ 472 wiphy_lock(local->hw.wiphy); 473 wiphy_work_flush(local->hw.wiphy, NULL); 474 475 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning), 476 "%s called with hardware scan in progress\n", __func__); 477 478 list_for_each_entry(sdata, &local->interfaces, list) { 479 /* 480 * XXX: there may be more work for other vif types and even 481 * for station mode: a good thing would be to run most of 482 * the iface type's dependent _stop (ieee80211_mg_stop, 483 * ieee80211_ibss_stop) etc... 484 * For now, fix only the specific bug that was seen: race 485 * between csa_connection_drop_work and us. 486 */ 487 if (sdata->vif.type == NL80211_IFTYPE_STATION) { 488 /* 489 * This worker is scheduled from the iface worker that 490 * runs on mac80211's workqueue, so we can't be 491 * scheduling this worker after the cancel right here. 492 * The exception is ieee80211_chswitch_done. 493 * Then we can have a race... 494 */ 495 wiphy_work_cancel(local->hw.wiphy, 496 &sdata->u.mgd.csa_connection_drop_work); 497 if (sdata->vif.bss_conf.csa_active) 498 ieee80211_sta_connection_lost(sdata, 499 WLAN_REASON_UNSPECIFIED, 500 false); 501 } 502 wiphy_delayed_work_flush(local->hw.wiphy, 503 &sdata->dec_tailroom_needed_wk); 504 } 505 ieee80211_scan_cancel(local); 506 507 /* make sure any new ROC will consider local->in_reconfig */ 508 wiphy_delayed_work_flush(local->hw.wiphy, &local->roc_work); 509 wiphy_work_flush(local->hw.wiphy, &local->hw_roc_done); 510 511 /* wait for all packet processing to be done */ 512 synchronize_net(); 513 514 ret = ieee80211_reconfig(local); 515 wiphy_unlock(local->hw.wiphy); 516 517 if (ret) 518 cfg80211_shutdown_all_interfaces(local->hw.wiphy); 519 520 rtnl_unlock(); 521 } 522 523 void ieee80211_restart_hw(struct ieee80211_hw *hw) 524 { 525 struct ieee80211_local *local = hw_to_local(hw); 526 527 trace_api_restart_hw(local); 528 529 wiphy_info(hw->wiphy, 530 "Hardware restart was requested\n"); 531 532 /* use this reason, ieee80211_reconfig will unblock it */ 533 ieee80211_stop_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, 534 IEEE80211_QUEUE_STOP_REASON_SUSPEND, 535 false); 536 537 /* 538 * Stop all Rx during the reconfig. We don't want state changes 539 * or driver callbacks while this is in progress. 540 */ 541 local->in_reconfig = true; 542 barrier(); 543 544 queue_work(system_freezable_wq, &local->restart_work); 545 } 546 EXPORT_SYMBOL(ieee80211_restart_hw); 547 548 #ifdef CONFIG_INET 549 static int ieee80211_ifa_changed(struct notifier_block *nb, 550 unsigned long data, void *arg) 551 { 552 struct in_ifaddr *ifa = arg; 553 struct ieee80211_local *local = 554 container_of(nb, struct ieee80211_local, 555 ifa_notifier); 556 struct net_device *ndev = ifa->ifa_dev->dev; 557 struct wireless_dev *wdev = ndev->ieee80211_ptr; 558 struct in_device *idev; 559 struct ieee80211_sub_if_data *sdata; 560 struct ieee80211_vif_cfg *vif_cfg; 561 struct ieee80211_if_managed *ifmgd; 562 int c = 0; 563 564 /* Make sure it's our interface that got changed */ 565 if (!wdev) 566 return NOTIFY_DONE; 567 568 if (wdev->wiphy != local->hw.wiphy || !wdev->registered) 569 return NOTIFY_DONE; 570 571 sdata = IEEE80211_DEV_TO_SUB_IF(ndev); 572 vif_cfg = &sdata->vif.cfg; 573 574 /* ARP filtering is only supported in managed mode */ 575 if (sdata->vif.type != NL80211_IFTYPE_STATION) 576 return NOTIFY_DONE; 577 578 idev = __in_dev_get_rtnl(sdata->dev); 579 if (!idev) 580 return NOTIFY_DONE; 581 582 ifmgd = &sdata->u.mgd; 583 584 /* 585 * The nested here is needed to convince lockdep that this is 586 * all OK. Yes, we lock the wiphy mutex here while we already 587 * hold the notifier rwsem, that's the normal case. And yes, 588 * we also acquire the notifier rwsem again when unregistering 589 * a netdev while we already hold the wiphy mutex, so it does 590 * look like a typical ABBA deadlock. 591 * 592 * However, both of these things happen with the RTNL held 593 * already. Therefore, they can't actually happen, since the 594 * lock orders really are ABC and ACB, which is fine due to 595 * the RTNL (A). 596 * 597 * We still need to prevent recursion, which is accomplished 598 * by the !wdev->registered check above. 599 */ 600 mutex_lock_nested(&local->hw.wiphy->mtx, 1); 601 __acquire(&local->hw.wiphy->mtx); 602 603 /* Copy the addresses to the vif config list */ 604 ifa = rtnl_dereference(idev->ifa_list); 605 while (ifa) { 606 if (c < IEEE80211_BSS_ARP_ADDR_LIST_LEN) 607 vif_cfg->arp_addr_list[c] = ifa->ifa_address; 608 ifa = rtnl_dereference(ifa->ifa_next); 609 c++; 610 } 611 612 vif_cfg->arp_addr_cnt = c; 613 614 /* Configure driver only if associated (which also implies it is up) */ 615 if (ifmgd->associated) 616 ieee80211_vif_cfg_change_notify(sdata, BSS_CHANGED_ARP_FILTER); 617 618 wiphy_unlock(local->hw.wiphy); 619 620 return NOTIFY_OK; 621 } 622 #endif 623 624 #if IS_ENABLED(CONFIG_IPV6) 625 static int ieee80211_ifa6_changed(struct notifier_block *nb, 626 unsigned long data, void *arg) 627 { 628 struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)arg; 629 struct inet6_dev *idev = ifa->idev; 630 struct net_device *ndev = ifa->idev->dev; 631 struct ieee80211_local *local = 632 container_of(nb, struct ieee80211_local, ifa6_notifier); 633 struct wireless_dev *wdev = ndev->ieee80211_ptr; 634 struct ieee80211_sub_if_data *sdata; 635 636 /* Make sure it's our interface that got changed */ 637 if (!wdev || wdev->wiphy != local->hw.wiphy) 638 return NOTIFY_DONE; 639 640 sdata = IEEE80211_DEV_TO_SUB_IF(ndev); 641 642 /* 643 * For now only support station mode. This is mostly because 644 * doing AP would have to handle AP_VLAN in some way ... 645 */ 646 if (sdata->vif.type != NL80211_IFTYPE_STATION) 647 return NOTIFY_DONE; 648 649 drv_ipv6_addr_change(local, sdata, idev); 650 651 return NOTIFY_OK; 652 } 653 #endif 654 655 /* There isn't a lot of sense in it, but you can transmit anything you like */ 656 static const struct ieee80211_txrx_stypes 657 ieee80211_default_mgmt_stypes[NUM_NL80211_IFTYPES] = { 658 [NL80211_IFTYPE_ADHOC] = { 659 .tx = 0xffff, 660 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | 661 BIT(IEEE80211_STYPE_AUTH >> 4) | 662 BIT(IEEE80211_STYPE_DEAUTH >> 4) | 663 BIT(IEEE80211_STYPE_PROBE_REQ >> 4), 664 }, 665 [NL80211_IFTYPE_STATION] = { 666 .tx = 0xffff, 667 /* 668 * To support Pre Association Security Negotiation (PASN) while 669 * already associated to one AP, allow user space to register to 670 * Rx authentication frames, so that the user space logic would 671 * be able to receive/handle authentication frames from a 672 * different AP as part of PASN. 673 * It is expected that user space would intelligently register 674 * for Rx authentication frames, i.e., only when PASN is used 675 * and configure a match filter only for PASN authentication 676 * algorithm, as otherwise the MLME functionality of mac80211 677 * would be broken. 678 */ 679 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | 680 BIT(IEEE80211_STYPE_AUTH >> 4) | 681 BIT(IEEE80211_STYPE_PROBE_REQ >> 4), 682 }, 683 [NL80211_IFTYPE_AP] = { 684 .tx = 0xffff, 685 .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) | 686 BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) | 687 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) | 688 BIT(IEEE80211_STYPE_DISASSOC >> 4) | 689 BIT(IEEE80211_STYPE_AUTH >> 4) | 690 BIT(IEEE80211_STYPE_DEAUTH >> 4) | 691 BIT(IEEE80211_STYPE_ACTION >> 4), 692 }, 693 [NL80211_IFTYPE_AP_VLAN] = { 694 /* copy 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_P2P_CLIENT] = { 705 .tx = 0xffff, 706 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | 707 BIT(IEEE80211_STYPE_PROBE_REQ >> 4), 708 }, 709 [NL80211_IFTYPE_P2P_GO] = { 710 .tx = 0xffff, 711 .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) | 712 BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) | 713 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) | 714 BIT(IEEE80211_STYPE_DISASSOC >> 4) | 715 BIT(IEEE80211_STYPE_AUTH >> 4) | 716 BIT(IEEE80211_STYPE_DEAUTH >> 4) | 717 BIT(IEEE80211_STYPE_ACTION >> 4), 718 }, 719 [NL80211_IFTYPE_MESH_POINT] = { 720 .tx = 0xffff, 721 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | 722 BIT(IEEE80211_STYPE_AUTH >> 4) | 723 BIT(IEEE80211_STYPE_DEAUTH >> 4), 724 }, 725 [NL80211_IFTYPE_P2P_DEVICE] = { 726 .tx = 0xffff, 727 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | 728 BIT(IEEE80211_STYPE_PROBE_REQ >> 4), 729 }, 730 }; 731 732 static const struct ieee80211_ht_cap mac80211_ht_capa_mod_mask = { 733 .ampdu_params_info = IEEE80211_HT_AMPDU_PARM_FACTOR | 734 IEEE80211_HT_AMPDU_PARM_DENSITY, 735 736 .cap_info = cpu_to_le16(IEEE80211_HT_CAP_SUP_WIDTH_20_40 | 737 IEEE80211_HT_CAP_MAX_AMSDU | 738 IEEE80211_HT_CAP_SGI_20 | 739 IEEE80211_HT_CAP_SGI_40 | 740 IEEE80211_HT_CAP_TX_STBC | 741 IEEE80211_HT_CAP_RX_STBC | 742 IEEE80211_HT_CAP_LDPC_CODING | 743 IEEE80211_HT_CAP_40MHZ_INTOLERANT), 744 .mcs = { 745 .rx_mask = { 0xff, 0xff, 0xff, 0xff, 0xff, 746 0xff, 0xff, 0xff, 0xff, 0xff, }, 747 }, 748 }; 749 750 static const struct ieee80211_vht_cap mac80211_vht_capa_mod_mask = { 751 .vht_cap_info = 752 cpu_to_le32(IEEE80211_VHT_CAP_RXLDPC | 753 IEEE80211_VHT_CAP_SHORT_GI_80 | 754 IEEE80211_VHT_CAP_SHORT_GI_160 | 755 IEEE80211_VHT_CAP_RXSTBC_MASK | 756 IEEE80211_VHT_CAP_TXSTBC | 757 IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE | 758 IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE | 759 IEEE80211_VHT_CAP_TX_ANTENNA_PATTERN | 760 IEEE80211_VHT_CAP_RX_ANTENNA_PATTERN | 761 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK), 762 .supp_mcs = { 763 .rx_mcs_map = cpu_to_le16(~0), 764 .tx_mcs_map = cpu_to_le16(~0), 765 }, 766 }; 767 768 struct ieee80211_hw *ieee80211_alloc_hw_nm(size_t priv_data_len, 769 const struct ieee80211_ops *ops, 770 const char *requested_name) 771 { 772 struct ieee80211_local *local; 773 int priv_size, i; 774 struct wiphy *wiphy; 775 bool emulate_chanctx; 776 777 if (WARN_ON(!ops->tx || !ops->start || !ops->stop || !ops->config || 778 !ops->add_interface || !ops->remove_interface || 779 !ops->configure_filter || !ops->wake_tx_queue)) 780 return NULL; 781 782 if (WARN_ON(ops->sta_state && (ops->sta_add || ops->sta_remove))) 783 return NULL; 784 785 if (WARN_ON(!!ops->link_info_changed != !!ops->vif_cfg_changed || 786 (ops->link_info_changed && ops->bss_info_changed))) 787 return NULL; 788 789 /* check all or no channel context operations exist */ 790 if (ops->add_chanctx == ieee80211_emulate_add_chanctx && 791 ops->remove_chanctx == ieee80211_emulate_remove_chanctx && 792 ops->change_chanctx == ieee80211_emulate_change_chanctx) { 793 if (WARN_ON(ops->assign_vif_chanctx || 794 ops->unassign_vif_chanctx)) 795 return NULL; 796 emulate_chanctx = true; 797 } else { 798 if (WARN_ON(ops->add_chanctx == ieee80211_emulate_add_chanctx || 799 ops->remove_chanctx == ieee80211_emulate_remove_chanctx || 800 ops->change_chanctx == ieee80211_emulate_change_chanctx)) 801 return NULL; 802 if (WARN_ON(!ops->add_chanctx || 803 !ops->remove_chanctx || 804 !ops->change_chanctx || 805 !ops->assign_vif_chanctx || 806 !ops->unassign_vif_chanctx)) 807 return NULL; 808 emulate_chanctx = false; 809 } 810 811 /* Ensure 32-byte alignment of our private data and hw private data. 812 * We use the wiphy priv data for both our ieee80211_local and for 813 * the driver's private data 814 * 815 * In memory it'll be like this: 816 * 817 * +-------------------------+ 818 * | struct wiphy | 819 * +-------------------------+ 820 * | struct ieee80211_local | 821 * +-------------------------+ 822 * | driver's private data | 823 * +-------------------------+ 824 * 825 */ 826 priv_size = ALIGN(sizeof(*local), NETDEV_ALIGN) + priv_data_len; 827 828 wiphy = wiphy_new_nm(&mac80211_config_ops, priv_size, requested_name); 829 830 if (!wiphy) 831 return NULL; 832 833 wiphy->mgmt_stypes = ieee80211_default_mgmt_stypes; 834 835 wiphy->privid = mac80211_wiphy_privid; 836 837 wiphy->flags |= WIPHY_FLAG_NETNS_OK | 838 WIPHY_FLAG_4ADDR_AP | 839 WIPHY_FLAG_4ADDR_STATION | 840 WIPHY_FLAG_REPORTS_OBSS | 841 WIPHY_FLAG_OFFCHAN_TX; 842 843 if (emulate_chanctx || ops->remain_on_channel) 844 wiphy->flags |= WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL; 845 846 wiphy->features |= NL80211_FEATURE_SK_TX_STATUS | 847 NL80211_FEATURE_SAE | 848 NL80211_FEATURE_HT_IBSS | 849 NL80211_FEATURE_VIF_TXPOWER | 850 NL80211_FEATURE_MAC_ON_CREATE | 851 NL80211_FEATURE_USERSPACE_MPM | 852 NL80211_FEATURE_FULL_AP_CLIENT_STATE; 853 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_FILS_STA); 854 wiphy_ext_feature_set(wiphy, 855 NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211); 856 wiphy_ext_feature_set(wiphy, 857 NL80211_EXT_FEATURE_CONTROL_PORT_NO_PREAUTH); 858 wiphy_ext_feature_set(wiphy, 859 NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211_TX_STATUS); 860 wiphy_ext_feature_set(wiphy, 861 NL80211_EXT_FEATURE_SCAN_FREQ_KHZ); 862 wiphy_ext_feature_set(wiphy, 863 NL80211_EXT_FEATURE_POWERED_ADDR_CHANGE); 864 865 if (!ops->hw_scan) { 866 wiphy->features |= NL80211_FEATURE_LOW_PRIORITY_SCAN | 867 NL80211_FEATURE_AP_SCAN; 868 /* 869 * if the driver behaves correctly using the probe request 870 * (template) from mac80211, then both of these should be 871 * supported even with hw scan - but let drivers opt in. 872 */ 873 wiphy_ext_feature_set(wiphy, 874 NL80211_EXT_FEATURE_SCAN_RANDOM_SN); 875 wiphy_ext_feature_set(wiphy, 876 NL80211_EXT_FEATURE_SCAN_MIN_PREQ_CONTENT); 877 } 878 879 if (!ops->set_key) { 880 wiphy->flags |= WIPHY_FLAG_IBSS_RSN; 881 wiphy_ext_feature_set(wiphy, 882 NL80211_EXT_FEATURE_SPP_AMSDU_SUPPORT); 883 } 884 885 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_TXQS); 886 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_RRM); 887 888 wiphy->bss_priv_size = sizeof(struct ieee80211_bss); 889 890 local = wiphy_priv(wiphy); 891 892 if (sta_info_init(local)) 893 goto err_free; 894 895 local->hw.wiphy = wiphy; 896 897 local->hw.priv = (char *)local + ALIGN(sizeof(*local), NETDEV_ALIGN); 898 899 local->ops = ops; 900 local->emulate_chanctx = emulate_chanctx; 901 902 if (emulate_chanctx) 903 ieee80211_hw_set(&local->hw, CHANCTX_STA_CSA); 904 905 /* 906 * We need a bit of data queued to build aggregates properly, so 907 * instruct the TCP stack to allow more than a single ms of data 908 * to be queued in the stack. The value is a bit-shift of 1 909 * second, so 7 is ~8ms of queued data. Only affects local TCP 910 * sockets. 911 * This is the default, anyhow - drivers may need to override it 912 * for local reasons (longer buffers, longer completion time, or 913 * similar). 914 */ 915 local->hw.tx_sk_pacing_shift = 7; 916 917 /* set up some defaults */ 918 local->hw.queues = 1; 919 local->hw.max_rates = 1; 920 local->hw.max_report_rates = 0; 921 local->hw.max_rx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF_HT; 922 local->hw.max_tx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF_HT; 923 local->hw.offchannel_tx_hw_queue = IEEE80211_INVAL_HW_QUEUE; 924 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long; 925 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short; 926 local->hw.radiotap_mcs_details = IEEE80211_RADIOTAP_MCS_HAVE_MCS | 927 IEEE80211_RADIOTAP_MCS_HAVE_GI | 928 IEEE80211_RADIOTAP_MCS_HAVE_BW; 929 local->hw.radiotap_vht_details = IEEE80211_RADIOTAP_VHT_KNOWN_GI | 930 IEEE80211_RADIOTAP_VHT_KNOWN_BANDWIDTH; 931 local->hw.uapsd_queues = IEEE80211_DEFAULT_UAPSD_QUEUES; 932 local->hw.uapsd_max_sp_len = IEEE80211_DEFAULT_MAX_SP_LEN; 933 local->hw.max_mtu = IEEE80211_MAX_DATA_LEN; 934 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL; 935 wiphy->ht_capa_mod_mask = &mac80211_ht_capa_mod_mask; 936 wiphy->vht_capa_mod_mask = &mac80211_vht_capa_mod_mask; 937 938 local->ext_capa[7] = WLAN_EXT_CAPA8_OPMODE_NOTIF; 939 940 wiphy->extended_capabilities = local->ext_capa; 941 wiphy->extended_capabilities_mask = local->ext_capa; 942 wiphy->extended_capabilities_len = 943 ARRAY_SIZE(local->ext_capa); 944 945 INIT_LIST_HEAD(&local->interfaces); 946 INIT_LIST_HEAD(&local->mon_list); 947 948 __hw_addr_init(&local->mc_list); 949 950 mutex_init(&local->iflist_mtx); 951 spin_lock_init(&local->filter_lock); 952 spin_lock_init(&local->rx_path_lock); 953 spin_lock_init(&local->queue_stop_reason_lock); 954 955 for (i = 0; i < IEEE80211_NUM_ACS; i++) { 956 INIT_LIST_HEAD(&local->active_txqs[i]); 957 spin_lock_init(&local->active_txq_lock[i]); 958 local->aql_txq_limit_low[i] = IEEE80211_DEFAULT_AQL_TXQ_LIMIT_L; 959 local->aql_txq_limit_high[i] = 960 IEEE80211_DEFAULT_AQL_TXQ_LIMIT_H; 961 atomic_set(&local->aql_ac_pending_airtime[i], 0); 962 } 963 964 local->airtime_flags = AIRTIME_USE_TX | AIRTIME_USE_RX; 965 local->aql_threshold = IEEE80211_AQL_THRESHOLD; 966 atomic_set(&local->aql_total_pending_airtime, 0); 967 968 spin_lock_init(&local->handle_wake_tx_queue_lock); 969 970 INIT_LIST_HEAD(&local->chanctx_list); 971 972 wiphy_delayed_work_init(&local->scan_work, ieee80211_scan_work); 973 974 INIT_WORK(&local->restart_work, ieee80211_restart_work); 975 976 wiphy_work_init(&local->radar_detected_work, 977 ieee80211_dfs_radar_detected_work); 978 979 wiphy_work_init(&local->reconfig_filter, ieee80211_reconfig_filter); 980 981 wiphy_work_init(&local->dynamic_ps_enable_work, 982 ieee80211_dynamic_ps_enable_work); 983 wiphy_work_init(&local->dynamic_ps_disable_work, 984 ieee80211_dynamic_ps_disable_work); 985 timer_setup(&local->dynamic_ps_timer, ieee80211_dynamic_ps_timer, 0); 986 987 wiphy_work_init(&local->sched_scan_stopped_work, 988 ieee80211_sched_scan_stopped_work); 989 990 spin_lock_init(&local->ack_status_lock); 991 idr_init(&local->ack_status_frames); 992 993 for (i = 0; i < IEEE80211_MAX_QUEUES; i++) { 994 skb_queue_head_init(&local->pending[i]); 995 atomic_set(&local->agg_queue_stop[i], 0); 996 } 997 tasklet_setup(&local->tx_pending_tasklet, ieee80211_tx_pending); 998 tasklet_setup(&local->wake_txqs_tasklet, ieee80211_wake_txqs); 999 tasklet_setup(&local->tasklet, ieee80211_tasklet_handler); 1000 1001 skb_queue_head_init(&local->skb_queue); 1002 skb_queue_head_init(&local->skb_queue_unreliable); 1003 1004 ieee80211_alloc_led_names(local); 1005 1006 ieee80211_roc_setup(local); 1007 1008 local->hw.radiotap_timestamp.units_pos = -1; 1009 local->hw.radiotap_timestamp.accuracy = -1; 1010 1011 return &local->hw; 1012 err_free: 1013 wiphy_free(wiphy); 1014 return NULL; 1015 } 1016 EXPORT_SYMBOL(ieee80211_alloc_hw_nm); 1017 1018 static int ieee80211_init_cipher_suites(struct ieee80211_local *local) 1019 { 1020 bool have_wep = !fips_enabled; /* FIPS does not permit the use of RC4 */ 1021 bool have_mfp = ieee80211_hw_check(&local->hw, MFP_CAPABLE); 1022 int r = 0, w = 0; 1023 u32 *suites; 1024 static const u32 cipher_suites[] = { 1025 /* keep WEP first, it may be removed below */ 1026 WLAN_CIPHER_SUITE_WEP40, 1027 WLAN_CIPHER_SUITE_WEP104, 1028 WLAN_CIPHER_SUITE_TKIP, 1029 WLAN_CIPHER_SUITE_CCMP, 1030 WLAN_CIPHER_SUITE_CCMP_256, 1031 WLAN_CIPHER_SUITE_GCMP, 1032 WLAN_CIPHER_SUITE_GCMP_256, 1033 1034 /* keep last -- depends on hw flags! */ 1035 WLAN_CIPHER_SUITE_AES_CMAC, 1036 WLAN_CIPHER_SUITE_BIP_CMAC_256, 1037 WLAN_CIPHER_SUITE_BIP_GMAC_128, 1038 WLAN_CIPHER_SUITE_BIP_GMAC_256, 1039 }; 1040 1041 if (ieee80211_hw_check(&local->hw, SW_CRYPTO_CONTROL) || 1042 local->hw.wiphy->cipher_suites) { 1043 /* If the driver advertises, or doesn't support SW crypto, 1044 * we only need to remove WEP if necessary. 1045 */ 1046 if (have_wep) 1047 return 0; 1048 1049 /* well if it has _no_ ciphers ... fine */ 1050 if (!local->hw.wiphy->n_cipher_suites) 1051 return 0; 1052 1053 /* Driver provides cipher suites, but we need to exclude WEP */ 1054 suites = kmemdup(local->hw.wiphy->cipher_suites, 1055 sizeof(u32) * local->hw.wiphy->n_cipher_suites, 1056 GFP_KERNEL); 1057 if (!suites) 1058 return -ENOMEM; 1059 1060 for (r = 0; r < local->hw.wiphy->n_cipher_suites; r++) { 1061 u32 suite = local->hw.wiphy->cipher_suites[r]; 1062 1063 if (suite == WLAN_CIPHER_SUITE_WEP40 || 1064 suite == WLAN_CIPHER_SUITE_WEP104) 1065 continue; 1066 suites[w++] = suite; 1067 } 1068 } else { 1069 /* assign the (software supported and perhaps offloaded) 1070 * cipher suites 1071 */ 1072 local->hw.wiphy->cipher_suites = cipher_suites; 1073 local->hw.wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites); 1074 1075 if (!have_mfp) 1076 local->hw.wiphy->n_cipher_suites -= 4; 1077 1078 if (!have_wep) { 1079 local->hw.wiphy->cipher_suites += 2; 1080 local->hw.wiphy->n_cipher_suites -= 2; 1081 } 1082 1083 /* not dynamically allocated, so just return */ 1084 return 0; 1085 } 1086 1087 local->hw.wiphy->cipher_suites = suites; 1088 local->hw.wiphy->n_cipher_suites = w; 1089 local->wiphy_ciphers_allocated = true; 1090 1091 return 0; 1092 } 1093 1094 static bool 1095 ieee80211_ifcomb_check(const struct ieee80211_iface_combination *c, int n_comb) 1096 { 1097 int i, j; 1098 1099 for (i = 0; i < n_comb; i++, c++) { 1100 /* DFS is not supported with multi-channel combinations yet */ 1101 if (c->radar_detect_widths && 1102 c->num_different_channels > 1) 1103 return false; 1104 1105 /* mac80211 doesn't support more than one IBSS interface */ 1106 for (j = 0; j < c->n_limits; j++) 1107 if ((c->limits[j].types & BIT(NL80211_IFTYPE_ADHOC)) && 1108 c->limits[j].max > 1) 1109 return false; 1110 } 1111 1112 return true; 1113 } 1114 1115 int ieee80211_register_hw(struct ieee80211_hw *hw) 1116 { 1117 struct ieee80211_local *local = hw_to_local(hw); 1118 int result, i; 1119 enum nl80211_band band; 1120 int channels, max_bitrates; 1121 bool supp_ht, supp_vht, supp_he, supp_eht; 1122 struct cfg80211_chan_def dflt_chandef = {}; 1123 1124 if (ieee80211_hw_check(hw, QUEUE_CONTROL) && 1125 (local->hw.offchannel_tx_hw_queue == IEEE80211_INVAL_HW_QUEUE || 1126 local->hw.offchannel_tx_hw_queue >= local->hw.queues)) 1127 return -EINVAL; 1128 1129 if ((hw->wiphy->features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH) && 1130 (!local->ops->tdls_channel_switch || 1131 !local->ops->tdls_cancel_channel_switch || 1132 !local->ops->tdls_recv_channel_switch)) 1133 return -EOPNOTSUPP; 1134 1135 if (WARN_ON(ieee80211_hw_check(hw, SUPPORTS_TX_FRAG) && 1136 !local->ops->set_frag_threshold)) 1137 return -EINVAL; 1138 1139 if (WARN_ON(local->hw.wiphy->interface_modes & 1140 BIT(NL80211_IFTYPE_NAN) && 1141 (!local->ops->start_nan || !local->ops->stop_nan))) 1142 return -EINVAL; 1143 1144 if (hw->wiphy->flags & WIPHY_FLAG_SUPPORTS_MLO) { 1145 /* 1146 * For drivers capable of doing MLO, assume modern driver 1147 * or firmware facilities, so software doesn't have to do 1148 * as much, e.g. monitoring beacons would be hard if we 1149 * might not even know which link is active at which time. 1150 */ 1151 if (WARN_ON(local->emulate_chanctx)) 1152 return -EINVAL; 1153 1154 if (WARN_ON(!local->ops->link_info_changed)) 1155 return -EINVAL; 1156 1157 if (WARN_ON(!ieee80211_hw_check(hw, HAS_RATE_CONTROL))) 1158 return -EINVAL; 1159 1160 if (WARN_ON(!ieee80211_hw_check(hw, AMPDU_AGGREGATION))) 1161 return -EINVAL; 1162 1163 if (WARN_ON(ieee80211_hw_check(hw, HOST_BROADCAST_PS_BUFFERING))) 1164 return -EINVAL; 1165 1166 if (WARN_ON(ieee80211_hw_check(hw, SUPPORTS_PS) && 1167 (!ieee80211_hw_check(hw, SUPPORTS_DYNAMIC_PS) || 1168 ieee80211_hw_check(hw, PS_NULLFUNC_STACK)))) 1169 return -EINVAL; 1170 1171 if (WARN_ON(!ieee80211_hw_check(hw, MFP_CAPABLE))) 1172 return -EINVAL; 1173 1174 if (WARN_ON(!ieee80211_hw_check(hw, CONNECTION_MONITOR))) 1175 return -EINVAL; 1176 1177 if (WARN_ON(ieee80211_hw_check(hw, NEED_DTIM_BEFORE_ASSOC))) 1178 return -EINVAL; 1179 1180 if (WARN_ON(ieee80211_hw_check(hw, TIMING_BEACON_ONLY))) 1181 return -EINVAL; 1182 1183 if (WARN_ON(!ieee80211_hw_check(hw, AP_LINK_PS))) 1184 return -EINVAL; 1185 } 1186 1187 #ifdef CONFIG_PM 1188 if (hw->wiphy->wowlan && (!local->ops->suspend || !local->ops->resume)) 1189 return -EINVAL; 1190 #endif 1191 1192 if (local->emulate_chanctx) { 1193 for (i = 0; i < local->hw.wiphy->n_iface_combinations; i++) { 1194 const struct ieee80211_iface_combination *comb; 1195 1196 comb = &local->hw.wiphy->iface_combinations[i]; 1197 1198 if (comb->num_different_channels > 1) 1199 return -EINVAL; 1200 } 1201 } 1202 1203 if (hw->wiphy->n_radio) { 1204 for (i = 0; i < hw->wiphy->n_radio; i++) { 1205 const struct wiphy_radio *radio = &hw->wiphy->radio[i]; 1206 1207 if (!ieee80211_ifcomb_check(radio->iface_combinations, 1208 radio->n_iface_combinations)) 1209 return -EINVAL; 1210 } 1211 } else { 1212 if (!ieee80211_ifcomb_check(hw->wiphy->iface_combinations, 1213 hw->wiphy->n_iface_combinations)) 1214 return -EINVAL; 1215 } 1216 1217 /* Only HW csum features are currently compatible with mac80211 */ 1218 if (WARN_ON(hw->netdev_features & ~MAC80211_SUPPORTED_FEATURES)) 1219 return -EINVAL; 1220 1221 if (hw->max_report_rates == 0) 1222 hw->max_report_rates = hw->max_rates; 1223 1224 local->rx_chains = 1; 1225 1226 /* 1227 * generic code guarantees at least one band, 1228 * set this very early because much code assumes 1229 * that hw.conf.channel is assigned 1230 */ 1231 channels = 0; 1232 max_bitrates = 0; 1233 supp_ht = false; 1234 supp_vht = false; 1235 supp_he = false; 1236 supp_eht = false; 1237 for (band = 0; band < NUM_NL80211_BANDS; band++) { 1238 const struct ieee80211_sband_iftype_data *iftd; 1239 struct ieee80211_supported_band *sband; 1240 1241 sband = local->hw.wiphy->bands[band]; 1242 if (!sband) 1243 continue; 1244 1245 if (!dflt_chandef.chan) { 1246 /* 1247 * Assign the first enabled channel to dflt_chandef 1248 * from the list of channels 1249 */ 1250 for (i = 0; i < sband->n_channels; i++) 1251 if (!(sband->channels[i].flags & 1252 IEEE80211_CHAN_DISABLED)) 1253 break; 1254 /* if none found then use the first anyway */ 1255 if (i == sband->n_channels) 1256 i = 0; 1257 cfg80211_chandef_create(&dflt_chandef, 1258 &sband->channels[i], 1259 NL80211_CHAN_NO_HT); 1260 /* init channel we're on */ 1261 local->monitor_chanreq.oper = dflt_chandef; 1262 if (local->emulate_chanctx) { 1263 local->dflt_chandef = dflt_chandef; 1264 local->hw.conf.chandef = dflt_chandef; 1265 } 1266 } 1267 1268 channels += sband->n_channels; 1269 1270 /* 1271 * Due to the way the aggregation code handles this and it 1272 * being an HT capability, we can't really support delayed 1273 * BA in MLO (yet). 1274 */ 1275 if (WARN_ON(sband->ht_cap.ht_supported && 1276 (sband->ht_cap.cap & IEEE80211_HT_CAP_DELAY_BA) && 1277 hw->wiphy->flags & WIPHY_FLAG_SUPPORTS_MLO)) 1278 return -EINVAL; 1279 1280 if (max_bitrates < sband->n_bitrates) 1281 max_bitrates = sband->n_bitrates; 1282 supp_ht = supp_ht || sband->ht_cap.ht_supported; 1283 supp_vht = supp_vht || sband->vht_cap.vht_supported; 1284 1285 for_each_sband_iftype_data(sband, i, iftd) { 1286 u8 he_40_mhz_cap; 1287 1288 supp_he = supp_he || iftd->he_cap.has_he; 1289 supp_eht = supp_eht || iftd->eht_cap.has_eht; 1290 1291 if (band == NL80211_BAND_2GHZ) 1292 he_40_mhz_cap = 1293 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_IN_2G; 1294 else 1295 he_40_mhz_cap = 1296 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G; 1297 1298 /* currently no support for HE client where HT has 40 MHz but not HT */ 1299 if (iftd->he_cap.has_he && 1300 iftd->types_mask & (BIT(NL80211_IFTYPE_STATION) | 1301 BIT(NL80211_IFTYPE_P2P_CLIENT)) && 1302 sband->ht_cap.ht_supported && 1303 sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 && 1304 !(iftd->he_cap.he_cap_elem.phy_cap_info[0] & he_40_mhz_cap)) 1305 return -EINVAL; 1306 } 1307 1308 /* HT, VHT, HE require QoS, thus >= 4 queues */ 1309 if (WARN_ON(local->hw.queues < IEEE80211_NUM_ACS && 1310 (supp_ht || supp_vht || supp_he))) 1311 return -EINVAL; 1312 1313 /* EHT requires HE support */ 1314 if (WARN_ON(supp_eht && !supp_he)) 1315 return -EINVAL; 1316 1317 if (!sband->ht_cap.ht_supported) 1318 continue; 1319 1320 /* TODO: consider VHT for RX chains, hopefully it's the same */ 1321 local->rx_chains = 1322 max(ieee80211_mcs_to_chains(&sband->ht_cap.mcs), 1323 local->rx_chains); 1324 1325 /* no need to mask, SM_PS_DISABLED has all bits set */ 1326 sband->ht_cap.cap |= WLAN_HT_CAP_SM_PS_DISABLED << 1327 IEEE80211_HT_CAP_SM_PS_SHIFT; 1328 } 1329 1330 /* if low-level driver supports AP, we also support VLAN. 1331 * drivers advertising SW_CRYPTO_CONTROL should enable AP_VLAN 1332 * based on their support to transmit SW encrypted packets. 1333 */ 1334 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_AP) && 1335 !ieee80211_hw_check(&local->hw, SW_CRYPTO_CONTROL)) { 1336 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP_VLAN); 1337 hw->wiphy->software_iftypes |= BIT(NL80211_IFTYPE_AP_VLAN); 1338 } 1339 1340 /* mac80211 always supports monitor */ 1341 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR); 1342 hw->wiphy->software_iftypes |= BIT(NL80211_IFTYPE_MONITOR); 1343 1344 1345 local->int_scan_req = kzalloc(sizeof(*local->int_scan_req) + 1346 sizeof(void *) * channels, GFP_KERNEL); 1347 if (!local->int_scan_req) 1348 return -ENOMEM; 1349 1350 eth_broadcast_addr(local->int_scan_req->bssid); 1351 1352 for (band = 0; band < NUM_NL80211_BANDS; band++) { 1353 if (!local->hw.wiphy->bands[band]) 1354 continue; 1355 local->int_scan_req->rates[band] = (u32) -1; 1356 } 1357 1358 #ifndef CONFIG_MAC80211_MESH 1359 /* mesh depends on Kconfig, but drivers should set it if they want */ 1360 local->hw.wiphy->interface_modes &= ~BIT(NL80211_IFTYPE_MESH_POINT); 1361 #endif 1362 1363 /* if the underlying driver supports mesh, mac80211 will (at least) 1364 * provide routing of mesh authentication frames to userspace */ 1365 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_MESH_POINT)) 1366 local->hw.wiphy->flags |= WIPHY_FLAG_MESH_AUTH; 1367 1368 /* mac80211 supports control port protocol changing */ 1369 local->hw.wiphy->flags |= WIPHY_FLAG_CONTROL_PORT_PROTOCOL; 1370 1371 if (ieee80211_hw_check(&local->hw, SIGNAL_DBM)) { 1372 local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM; 1373 } else if (ieee80211_hw_check(&local->hw, SIGNAL_UNSPEC)) { 1374 local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC; 1375 if (hw->max_signal <= 0) { 1376 result = -EINVAL; 1377 goto fail_workqueue; 1378 } 1379 } 1380 1381 /* Mac80211 and therefore all drivers using SW crypto only 1382 * are able to handle PTK rekeys and Extended Key ID. 1383 */ 1384 if (!local->ops->set_key) { 1385 wiphy_ext_feature_set(local->hw.wiphy, 1386 NL80211_EXT_FEATURE_CAN_REPLACE_PTK0); 1387 wiphy_ext_feature_set(local->hw.wiphy, 1388 NL80211_EXT_FEATURE_EXT_KEY_ID); 1389 } 1390 1391 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_ADHOC)) 1392 wiphy_ext_feature_set(local->hw.wiphy, 1393 NL80211_EXT_FEATURE_DEL_IBSS_STA); 1394 1395 /* 1396 * Calculate scan IE length -- we need this to alloc 1397 * memory and to subtract from the driver limit. It 1398 * includes the DS Params, (extended) supported rates, and HT 1399 * information -- SSID is the driver's responsibility. 1400 */ 1401 local->scan_ies_len = 4 + max_bitrates /* (ext) supp rates */ + 1402 3 /* DS Params */; 1403 if (supp_ht) 1404 local->scan_ies_len += 2 + sizeof(struct ieee80211_ht_cap); 1405 1406 if (supp_vht) 1407 local->scan_ies_len += 1408 2 + sizeof(struct ieee80211_vht_cap); 1409 1410 /* 1411 * HE cap element is variable in size - set len to allow max size */ 1412 if (supp_he) { 1413 local->scan_ies_len += 1414 3 + sizeof(struct ieee80211_he_cap_elem) + 1415 sizeof(struct ieee80211_he_mcs_nss_supp) + 1416 IEEE80211_HE_PPE_THRES_MAX_LEN; 1417 1418 if (supp_eht) 1419 local->scan_ies_len += 1420 3 + sizeof(struct ieee80211_eht_cap_elem) + 1421 sizeof(struct ieee80211_eht_mcs_nss_supp) + 1422 IEEE80211_EHT_PPE_THRES_MAX_LEN; 1423 } 1424 1425 if (!local->ops->hw_scan) { 1426 /* For hw_scan, driver needs to set these up. */ 1427 local->hw.wiphy->max_scan_ssids = 4; 1428 local->hw.wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN; 1429 } 1430 1431 /* 1432 * If the driver supports any scan IEs, then assume the 1433 * limit includes the IEs mac80211 will add, otherwise 1434 * leave it at zero and let the driver sort it out; we 1435 * still pass our IEs to the driver but userspace will 1436 * not be allowed to in that case. 1437 */ 1438 if (local->hw.wiphy->max_scan_ie_len) 1439 local->hw.wiphy->max_scan_ie_len -= local->scan_ies_len; 1440 1441 result = ieee80211_init_cipher_suites(local); 1442 if (result < 0) 1443 goto fail_workqueue; 1444 1445 if (!local->ops->remain_on_channel) 1446 local->hw.wiphy->max_remain_on_channel_duration = 5000; 1447 1448 /* mac80211 based drivers don't support internal TDLS setup */ 1449 if (local->hw.wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS) 1450 local->hw.wiphy->flags |= WIPHY_FLAG_TDLS_EXTERNAL_SETUP; 1451 1452 /* mac80211 supports eCSA, if the driver supports STA CSA at all */ 1453 if (ieee80211_hw_check(&local->hw, CHANCTX_STA_CSA)) 1454 local->ext_capa[0] |= WLAN_EXT_CAPA1_EXT_CHANNEL_SWITCHING; 1455 1456 /* mac80211 supports multi BSSID, if the driver supports it */ 1457 if (ieee80211_hw_check(&local->hw, SUPPORTS_MULTI_BSSID)) { 1458 local->hw.wiphy->support_mbssid = true; 1459 if (ieee80211_hw_check(&local->hw, 1460 SUPPORTS_ONLY_HE_MULTI_BSSID)) 1461 local->hw.wiphy->support_only_he_mbssid = true; 1462 else 1463 local->ext_capa[2] |= 1464 WLAN_EXT_CAPA3_MULTI_BSSID_SUPPORT; 1465 } 1466 1467 local->hw.wiphy->max_num_csa_counters = IEEE80211_MAX_CNTDWN_COUNTERS_NUM; 1468 1469 /* 1470 * We use the number of queues for feature tests (QoS, HT) internally 1471 * so restrict them appropriately. 1472 */ 1473 if (hw->queues > IEEE80211_MAX_QUEUES) 1474 hw->queues = IEEE80211_MAX_QUEUES; 1475 1476 local->workqueue = 1477 alloc_ordered_workqueue("%s", 0, wiphy_name(local->hw.wiphy)); 1478 if (!local->workqueue) { 1479 result = -ENOMEM; 1480 goto fail_workqueue; 1481 } 1482 1483 /* 1484 * The hardware needs headroom for sending the frame, 1485 * and we need some headroom for passing the frame to monitor 1486 * interfaces, but never both at the same time. 1487 */ 1488 local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom, 1489 IEEE80211_TX_STATUS_HEADROOM); 1490 1491 /* 1492 * if the driver doesn't specify a max listen interval we 1493 * use 5 which should be a safe default 1494 */ 1495 if (local->hw.max_listen_interval == 0) 1496 local->hw.max_listen_interval = 5; 1497 1498 local->hw.conf.listen_interval = local->hw.max_listen_interval; 1499 1500 local->dynamic_ps_forced_timeout = -1; 1501 1502 if (!local->hw.max_nan_de_entries) 1503 local->hw.max_nan_de_entries = IEEE80211_MAX_NAN_INSTANCE_ID; 1504 1505 if (!local->hw.weight_multiplier) 1506 local->hw.weight_multiplier = 1; 1507 1508 ieee80211_wep_init(local); 1509 1510 local->hw.conf.flags = IEEE80211_CONF_IDLE; 1511 1512 ieee80211_led_init(local); 1513 1514 result = ieee80211_txq_setup_flows(local); 1515 if (result) 1516 goto fail_flows; 1517 1518 rtnl_lock(); 1519 result = ieee80211_init_rate_ctrl_alg(local, 1520 hw->rate_control_algorithm); 1521 rtnl_unlock(); 1522 if (result < 0) { 1523 wiphy_debug(local->hw.wiphy, 1524 "Failed to initialize rate control algorithm\n"); 1525 goto fail_rate; 1526 } 1527 1528 if (local->rate_ctrl) { 1529 clear_bit(IEEE80211_HW_SUPPORTS_VHT_EXT_NSS_BW, hw->flags); 1530 if (local->rate_ctrl->ops->capa & RATE_CTRL_CAPA_VHT_EXT_NSS_BW) 1531 ieee80211_hw_set(hw, SUPPORTS_VHT_EXT_NSS_BW); 1532 } 1533 1534 /* 1535 * If the VHT capabilities don't have IEEE80211_VHT_EXT_NSS_BW_CAPABLE, 1536 * or have it when we don't, copy the sband structure and set/clear it. 1537 * This is necessary because rate scaling algorithms could be switched 1538 * and have different support values. 1539 * Print a message so that in the common case the reallocation can be 1540 * avoided. 1541 */ 1542 BUILD_BUG_ON(NUM_NL80211_BANDS > 8 * sizeof(local->sband_allocated)); 1543 for (band = 0; band < NUM_NL80211_BANDS; band++) { 1544 struct ieee80211_supported_band *sband; 1545 bool local_cap, ie_cap; 1546 1547 local_cap = ieee80211_hw_check(hw, SUPPORTS_VHT_EXT_NSS_BW); 1548 1549 sband = local->hw.wiphy->bands[band]; 1550 if (!sband || !sband->vht_cap.vht_supported) 1551 continue; 1552 1553 ie_cap = !!(sband->vht_cap.vht_mcs.tx_highest & 1554 cpu_to_le16(IEEE80211_VHT_EXT_NSS_BW_CAPABLE)); 1555 1556 if (local_cap == ie_cap) 1557 continue; 1558 1559 sband = kmemdup(sband, sizeof(*sband), GFP_KERNEL); 1560 if (!sband) { 1561 result = -ENOMEM; 1562 goto fail_rate; 1563 } 1564 1565 wiphy_dbg(hw->wiphy, "copying sband (band %d) due to VHT EXT NSS BW flag\n", 1566 band); 1567 1568 sband->vht_cap.vht_mcs.tx_highest ^= 1569 cpu_to_le16(IEEE80211_VHT_EXT_NSS_BW_CAPABLE); 1570 1571 local->hw.wiphy->bands[band] = sband; 1572 local->sband_allocated |= BIT(band); 1573 } 1574 1575 result = wiphy_register(local->hw.wiphy); 1576 if (result < 0) 1577 goto fail_wiphy_register; 1578 1579 debugfs_hw_add(local); 1580 rate_control_add_debugfs(local); 1581 1582 ieee80211_check_wbrf_support(local); 1583 1584 rtnl_lock(); 1585 wiphy_lock(hw->wiphy); 1586 1587 /* add one default STA interface if supported */ 1588 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_STATION) && 1589 !ieee80211_hw_check(hw, NO_AUTO_VIF)) { 1590 struct vif_params params = {0}; 1591 1592 result = ieee80211_if_add(local, "wlan%d", NET_NAME_ENUM, NULL, 1593 NL80211_IFTYPE_STATION, ¶ms); 1594 if (result) 1595 wiphy_warn(local->hw.wiphy, 1596 "Failed to add default virtual iface\n"); 1597 } 1598 1599 wiphy_unlock(hw->wiphy); 1600 rtnl_unlock(); 1601 1602 #ifdef CONFIG_INET 1603 local->ifa_notifier.notifier_call = ieee80211_ifa_changed; 1604 result = register_inetaddr_notifier(&local->ifa_notifier); 1605 if (result) 1606 goto fail_ifa; 1607 #endif 1608 1609 #if IS_ENABLED(CONFIG_IPV6) 1610 local->ifa6_notifier.notifier_call = ieee80211_ifa6_changed; 1611 result = register_inet6addr_notifier(&local->ifa6_notifier); 1612 if (result) 1613 goto fail_ifa6; 1614 #endif 1615 1616 return 0; 1617 1618 #if IS_ENABLED(CONFIG_IPV6) 1619 fail_ifa6: 1620 #ifdef CONFIG_INET 1621 unregister_inetaddr_notifier(&local->ifa_notifier); 1622 #endif 1623 #endif 1624 #if defined(CONFIG_INET) || defined(CONFIG_IPV6) 1625 fail_ifa: 1626 #endif 1627 wiphy_unregister(local->hw.wiphy); 1628 fail_wiphy_register: 1629 rtnl_lock(); 1630 rate_control_deinitialize(local); 1631 ieee80211_remove_interfaces(local); 1632 rtnl_unlock(); 1633 fail_rate: 1634 ieee80211_txq_teardown_flows(local); 1635 fail_flows: 1636 ieee80211_led_exit(local); 1637 destroy_workqueue(local->workqueue); 1638 fail_workqueue: 1639 if (local->wiphy_ciphers_allocated) { 1640 kfree(local->hw.wiphy->cipher_suites); 1641 local->wiphy_ciphers_allocated = false; 1642 } 1643 kfree(local->int_scan_req); 1644 return result; 1645 } 1646 EXPORT_SYMBOL(ieee80211_register_hw); 1647 1648 void ieee80211_unregister_hw(struct ieee80211_hw *hw) 1649 { 1650 struct ieee80211_local *local = hw_to_local(hw); 1651 1652 tasklet_kill(&local->tx_pending_tasklet); 1653 tasklet_kill(&local->tasklet); 1654 1655 #ifdef CONFIG_INET 1656 unregister_inetaddr_notifier(&local->ifa_notifier); 1657 #endif 1658 #if IS_ENABLED(CONFIG_IPV6) 1659 unregister_inet6addr_notifier(&local->ifa6_notifier); 1660 #endif 1661 1662 rtnl_lock(); 1663 1664 /* 1665 * At this point, interface list manipulations are fine 1666 * because the driver cannot be handing us frames any 1667 * more and the tasklet is killed. 1668 */ 1669 ieee80211_remove_interfaces(local); 1670 1671 ieee80211_txq_teardown_flows(local); 1672 1673 wiphy_lock(local->hw.wiphy); 1674 wiphy_delayed_work_cancel(local->hw.wiphy, &local->roc_work); 1675 wiphy_work_cancel(local->hw.wiphy, &local->reconfig_filter); 1676 wiphy_work_cancel(local->hw.wiphy, &local->sched_scan_stopped_work); 1677 wiphy_work_cancel(local->hw.wiphy, &local->radar_detected_work); 1678 wiphy_unlock(local->hw.wiphy); 1679 rtnl_unlock(); 1680 1681 cancel_work_sync(&local->restart_work); 1682 1683 ieee80211_clear_tx_pending(local); 1684 rate_control_deinitialize(local); 1685 1686 if (skb_queue_len(&local->skb_queue) || 1687 skb_queue_len(&local->skb_queue_unreliable)) 1688 wiphy_warn(local->hw.wiphy, "skb_queue not empty\n"); 1689 skb_queue_purge(&local->skb_queue); 1690 skb_queue_purge(&local->skb_queue_unreliable); 1691 1692 wiphy_unregister(local->hw.wiphy); 1693 destroy_workqueue(local->workqueue); 1694 ieee80211_led_exit(local); 1695 kfree(local->int_scan_req); 1696 } 1697 EXPORT_SYMBOL(ieee80211_unregister_hw); 1698 1699 static int ieee80211_free_ack_frame(int id, void *p, void *data) 1700 { 1701 WARN_ONCE(1, "Have pending ack frames!\n"); 1702 kfree_skb(p); 1703 return 0; 1704 } 1705 1706 void ieee80211_free_hw(struct ieee80211_hw *hw) 1707 { 1708 struct ieee80211_local *local = hw_to_local(hw); 1709 enum nl80211_band band; 1710 1711 mutex_destroy(&local->iflist_mtx); 1712 1713 if (local->wiphy_ciphers_allocated) { 1714 kfree(local->hw.wiphy->cipher_suites); 1715 local->wiphy_ciphers_allocated = false; 1716 } 1717 1718 idr_for_each(&local->ack_status_frames, 1719 ieee80211_free_ack_frame, NULL); 1720 idr_destroy(&local->ack_status_frames); 1721 1722 sta_info_stop(local); 1723 1724 ieee80211_free_led_names(local); 1725 1726 for (band = 0; band < NUM_NL80211_BANDS; band++) { 1727 if (!(local->sband_allocated & BIT(band))) 1728 continue; 1729 kfree(local->hw.wiphy->bands[band]); 1730 } 1731 1732 wiphy_free(local->hw.wiphy); 1733 } 1734 EXPORT_SYMBOL(ieee80211_free_hw); 1735 1736 static const char * const drop_reasons_monitor[] = { 1737 #define V(x) #x, 1738 [0] = "RX_DROP_MONITOR", 1739 MAC80211_DROP_REASONS_MONITOR(V) 1740 }; 1741 1742 static struct drop_reason_list drop_reason_list_monitor = { 1743 .reasons = drop_reasons_monitor, 1744 .n_reasons = ARRAY_SIZE(drop_reasons_monitor), 1745 }; 1746 1747 static const char * const drop_reasons_unusable[] = { 1748 [0] = "RX_DROP_UNUSABLE", 1749 MAC80211_DROP_REASONS_UNUSABLE(V) 1750 #undef V 1751 }; 1752 1753 static struct drop_reason_list drop_reason_list_unusable = { 1754 .reasons = drop_reasons_unusable, 1755 .n_reasons = ARRAY_SIZE(drop_reasons_unusable), 1756 }; 1757 1758 static int __init ieee80211_init(void) 1759 { 1760 struct sk_buff *skb; 1761 int ret; 1762 1763 BUILD_BUG_ON(sizeof(struct ieee80211_tx_info) > sizeof(skb->cb)); 1764 BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, driver_data) + 1765 IEEE80211_TX_INFO_DRIVER_DATA_SIZE > sizeof(skb->cb)); 1766 1767 ret = rc80211_minstrel_init(); 1768 if (ret) 1769 return ret; 1770 1771 ret = ieee80211_iface_init(); 1772 if (ret) 1773 goto err_netdev; 1774 1775 drop_reasons_register_subsys(SKB_DROP_REASON_SUBSYS_MAC80211_MONITOR, 1776 &drop_reason_list_monitor); 1777 drop_reasons_register_subsys(SKB_DROP_REASON_SUBSYS_MAC80211_UNUSABLE, 1778 &drop_reason_list_unusable); 1779 1780 return 0; 1781 err_netdev: 1782 rc80211_minstrel_exit(); 1783 1784 return ret; 1785 } 1786 1787 static void __exit ieee80211_exit(void) 1788 { 1789 rc80211_minstrel_exit(); 1790 1791 ieee80211s_stop(); 1792 1793 ieee80211_iface_exit(); 1794 1795 drop_reasons_unregister_subsys(SKB_DROP_REASON_SUBSYS_MAC80211_MONITOR); 1796 drop_reasons_unregister_subsys(SKB_DROP_REASON_SUBSYS_MAC80211_UNUSABLE); 1797 1798 rcu_barrier(); 1799 } 1800 1801 1802 subsys_initcall(ieee80211_init); 1803 module_exit(ieee80211_exit); 1804 1805 MODULE_DESCRIPTION("IEEE 802.11 subsystem"); 1806 MODULE_LICENSE("GPL"); 1807