1 // SPDX-License-Identifier: GPL-2.0-only
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) 2018-2022 Intel Corporation
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/cfg80211.h>
26 #include <net/addrconf.h>
28 #include "ieee80211_i.h"
29 #include "driver-ops.h"
36 void ieee80211_configure_filter(struct ieee80211_local *local)
39 unsigned int changed_flags;
40 unsigned int new_flags = 0;
42 if (atomic_read(&local->iff_allmultis))
43 new_flags |= FIF_ALLMULTI;
45 if (local->monitors || test_bit(SCAN_SW_SCANNING, &local->scanning) ||
46 test_bit(SCAN_ONCHANNEL_SCANNING, &local->scanning))
47 new_flags |= FIF_BCN_PRBRESP_PROMISC;
49 if (local->fif_probe_req || local->probe_req_reg)
50 new_flags |= FIF_PROBE_REQ;
52 if (local->fif_fcsfail)
53 new_flags |= FIF_FCSFAIL;
55 if (local->fif_plcpfail)
56 new_flags |= FIF_PLCPFAIL;
58 if (local->fif_control)
59 new_flags |= FIF_CONTROL;
61 if (local->fif_other_bss)
62 new_flags |= FIF_OTHER_BSS;
64 if (local->fif_pspoll)
65 new_flags |= FIF_PSPOLL;
67 if (local->rx_mcast_action_reg)
68 new_flags |= FIF_MCAST_ACTION;
70 spin_lock_bh(&local->filter_lock);
71 changed_flags = local->filter_flags ^ new_flags;
73 mc = drv_prepare_multicast(local, &local->mc_list);
74 spin_unlock_bh(&local->filter_lock);
79 drv_configure_filter(local, changed_flags, &new_flags, mc);
81 WARN_ON(new_flags & (1<<31));
83 local->filter_flags = new_flags & ~(1<<31);
86 static void ieee80211_reconfig_filter(struct work_struct *work)
88 struct ieee80211_local *local =
89 container_of(work, struct ieee80211_local, reconfig_filter);
91 ieee80211_configure_filter(local);
94 static u32 ieee80211_hw_conf_chan(struct ieee80211_local *local)
96 struct ieee80211_sub_if_data *sdata;
97 struct cfg80211_chan_def chandef = {};
102 offchannel_flag = local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL;
104 if (local->scan_chandef.chan) {
105 chandef = local->scan_chandef;
106 } else if (local->tmp_channel) {
107 chandef.chan = local->tmp_channel;
108 chandef.width = NL80211_CHAN_WIDTH_20_NOHT;
109 chandef.center_freq1 = chandef.chan->center_freq;
110 chandef.freq1_offset = chandef.chan->freq_offset;
112 chandef = local->_oper_chandef;
114 WARN(!cfg80211_chandef_valid(&chandef),
115 "control:%d.%03d MHz width:%d center: %d.%03d/%d MHz",
116 chandef.chan->center_freq, chandef.chan->freq_offset,
117 chandef.width, chandef.center_freq1, chandef.freq1_offset,
118 chandef.center_freq2);
120 if (!cfg80211_chandef_identical(&chandef, &local->_oper_chandef))
121 local->hw.conf.flags |= IEEE80211_CONF_OFFCHANNEL;
123 local->hw.conf.flags &= ~IEEE80211_CONF_OFFCHANNEL;
125 offchannel_flag ^= local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL;
127 if (offchannel_flag ||
128 !cfg80211_chandef_identical(&local->hw.conf.chandef,
129 &local->_oper_chandef)) {
130 local->hw.conf.chandef = chandef;
131 changed |= IEEE80211_CONF_CHANGE_CHANNEL;
134 if (!conf_is_ht(&local->hw.conf)) {
136 * mac80211.h documents that this is only valid
137 * when the channel is set to an HT type, and
138 * that otherwise STATIC is used.
140 local->hw.conf.smps_mode = IEEE80211_SMPS_STATIC;
141 } else if (local->hw.conf.smps_mode != local->smps_mode) {
142 local->hw.conf.smps_mode = local->smps_mode;
143 changed |= IEEE80211_CONF_CHANGE_SMPS;
146 power = ieee80211_chandef_max_power(&chandef);
149 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
150 if (!rcu_access_pointer(sdata->vif.bss_conf.chanctx_conf))
152 if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
154 if (sdata->vif.bss_conf.txpower == INT_MIN)
156 power = min(power, sdata->vif.bss_conf.txpower);
160 if (local->hw.conf.power_level != power) {
161 changed |= IEEE80211_CONF_CHANGE_POWER;
162 local->hw.conf.power_level = power;
168 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed)
174 if (!local->use_chanctx)
175 changed |= ieee80211_hw_conf_chan(local);
177 changed &= ~(IEEE80211_CONF_CHANGE_CHANNEL |
178 IEEE80211_CONF_CHANGE_POWER |
179 IEEE80211_CONF_CHANGE_SMPS);
181 if (changed && local->open_count) {
182 ret = drv_config(local, changed);
185 * HW reconfiguration should never fail, the driver has told
186 * us what it can support so it should live up to that promise.
189 * rfkill is not integrated with mac80211 and a
190 * configuration command can thus fail if hardware rfkill
193 * FIXME: integrate rfkill with mac80211 and then add this
203 #define BSS_CHANGED_VIF_CFG_FLAGS (BSS_CHANGED_ASSOC |\
207 BSS_CHANGED_ARP_FILTER |\
210 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
213 struct ieee80211_local *local = sdata->local;
217 if (!changed || sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
220 if (WARN_ON_ONCE(changed & (BSS_CHANGED_BEACON |
221 BSS_CHANGED_BEACON_ENABLED) &&
222 sdata->vif.type != NL80211_IFTYPE_AP &&
223 sdata->vif.type != NL80211_IFTYPE_ADHOC &&
224 sdata->vif.type != NL80211_IFTYPE_MESH_POINT &&
225 sdata->vif.type != NL80211_IFTYPE_OCB))
228 if (WARN_ON_ONCE(sdata->vif.type == NL80211_IFTYPE_P2P_DEVICE ||
229 sdata->vif.type == NL80211_IFTYPE_NAN ||
230 (sdata->vif.type == NL80211_IFTYPE_MONITOR &&
231 !sdata->vif.bss_conf.mu_mimo_owner &&
232 !(changed & BSS_CHANGED_TXPOWER))))
235 if (!check_sdata_in_driver(sdata))
238 if (changed & BSS_CHANGED_VIF_CFG_FLAGS) {
239 u64 ch = changed & BSS_CHANGED_VIF_CFG_FLAGS;
241 trace_drv_vif_cfg_changed(local, sdata, changed);
242 if (local->ops->vif_cfg_changed)
243 local->ops->vif_cfg_changed(&local->hw, &sdata->vif, ch);
246 if (changed & ~BSS_CHANGED_VIF_CFG_FLAGS) {
247 u64 ch = changed & ~BSS_CHANGED_VIF_CFG_FLAGS;
249 /* FIXME: should be for each link */
250 trace_drv_link_info_changed(local, sdata, &sdata->vif.bss_conf,
252 if (local->ops->link_info_changed)
253 local->ops->link_info_changed(&local->hw, &sdata->vif,
254 &sdata->vif.bss_conf, ch);
257 if (local->ops->bss_info_changed)
258 local->ops->bss_info_changed(&local->hw, &sdata->vif,
259 &sdata->vif.bss_conf, changed);
260 trace_drv_return_void(local);
263 void ieee80211_vif_cfg_change_notify(struct ieee80211_sub_if_data *sdata,
266 struct ieee80211_local *local = sdata->local;
268 WARN_ON_ONCE(changed & ~BSS_CHANGED_VIF_CFG_FLAGS);
270 if (!changed || sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
273 drv_vif_cfg_changed(local, sdata, changed);
276 void ieee80211_link_info_change_notify(struct ieee80211_sub_if_data *sdata,
277 struct ieee80211_link_data *link,
280 struct ieee80211_local *local = sdata->local;
282 WARN_ON_ONCE(changed & BSS_CHANGED_VIF_CFG_FLAGS);
284 if (!changed || sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
287 if (!check_sdata_in_driver(sdata))
290 drv_link_info_changed(local, sdata, link->conf, link->link_id, changed);
293 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata)
295 sdata->vif.bss_conf.use_cts_prot = false;
296 sdata->vif.bss_conf.use_short_preamble = false;
297 sdata->vif.bss_conf.use_short_slot = false;
298 return BSS_CHANGED_ERP_CTS_PROT |
299 BSS_CHANGED_ERP_PREAMBLE |
300 BSS_CHANGED_ERP_SLOT;
303 static void ieee80211_tasklet_handler(struct tasklet_struct *t)
305 struct ieee80211_local *local = from_tasklet(local, t, tasklet);
308 while ((skb = skb_dequeue(&local->skb_queue)) ||
309 (skb = skb_dequeue(&local->skb_queue_unreliable))) {
310 switch (skb->pkt_type) {
311 case IEEE80211_RX_MSG:
312 /* Clear skb->pkt_type in order to not confuse kernel
315 ieee80211_rx(&local->hw, skb);
317 case IEEE80211_TX_STATUS_MSG:
319 ieee80211_tx_status(&local->hw, skb);
322 WARN(1, "mac80211: Packet is of unknown type %d\n",
330 static void ieee80211_restart_work(struct work_struct *work)
332 struct ieee80211_local *local =
333 container_of(work, struct ieee80211_local, restart_work);
334 struct ieee80211_sub_if_data *sdata;
337 flush_workqueue(local->workqueue);
340 /* we might do interface manipulations, so need both */
341 wiphy_lock(local->hw.wiphy);
343 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning),
344 "%s called with hardware scan in progress\n", __func__);
346 list_for_each_entry(sdata, &local->interfaces, list) {
348 * XXX: there may be more work for other vif types and even
349 * for station mode: a good thing would be to run most of
350 * the iface type's dependent _stop (ieee80211_mg_stop,
351 * ieee80211_ibss_stop) etc...
352 * For now, fix only the specific bug that was seen: race
353 * between csa_connection_drop_work and us.
355 if (sdata->vif.type == NL80211_IFTYPE_STATION) {
357 * This worker is scheduled from the iface worker that
358 * runs on mac80211's workqueue, so we can't be
359 * scheduling this worker after the cancel right here.
360 * The exception is ieee80211_chswitch_done.
361 * Then we can have a race...
363 cancel_work_sync(&sdata->u.mgd.csa_connection_drop_work);
364 if (sdata->vif.bss_conf.csa_active) {
366 ieee80211_sta_connection_lost(sdata,
367 WLAN_REASON_UNSPECIFIED,
372 flush_delayed_work(&sdata->dec_tailroom_needed_wk);
374 ieee80211_scan_cancel(local);
376 /* make sure any new ROC will consider local->in_reconfig */
377 wiphy_delayed_work_flush(local->hw.wiphy, &local->roc_work);
378 wiphy_work_flush(local->hw.wiphy, &local->hw_roc_done);
380 /* wait for all packet processing to be done */
383 ret = ieee80211_reconfig(local);
384 wiphy_unlock(local->hw.wiphy);
387 cfg80211_shutdown_all_interfaces(local->hw.wiphy);
392 void ieee80211_restart_hw(struct ieee80211_hw *hw)
394 struct ieee80211_local *local = hw_to_local(hw);
396 trace_api_restart_hw(local);
398 wiphy_info(hw->wiphy,
399 "Hardware restart was requested\n");
401 /* use this reason, ieee80211_reconfig will unblock it */
402 ieee80211_stop_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
403 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
407 * Stop all Rx during the reconfig. We don't want state changes
408 * or driver callbacks while this is in progress.
410 local->in_reconfig = true;
413 queue_work(system_freezable_wq, &local->restart_work);
415 EXPORT_SYMBOL(ieee80211_restart_hw);
418 static int ieee80211_ifa_changed(struct notifier_block *nb,
419 unsigned long data, void *arg)
421 struct in_ifaddr *ifa = arg;
422 struct ieee80211_local *local =
423 container_of(nb, struct ieee80211_local,
425 struct net_device *ndev = ifa->ifa_dev->dev;
426 struct wireless_dev *wdev = ndev->ieee80211_ptr;
427 struct in_device *idev;
428 struct ieee80211_sub_if_data *sdata;
429 struct ieee80211_vif_cfg *vif_cfg;
430 struct ieee80211_if_managed *ifmgd;
433 /* Make sure it's our interface that got changed */
437 if (wdev->wiphy != local->hw.wiphy)
440 sdata = IEEE80211_DEV_TO_SUB_IF(ndev);
441 vif_cfg = &sdata->vif.cfg;
443 /* ARP filtering is only supported in managed mode */
444 if (sdata->vif.type != NL80211_IFTYPE_STATION)
447 idev = __in_dev_get_rtnl(sdata->dev);
451 ifmgd = &sdata->u.mgd;
454 /* Copy the addresses to the vif config list */
455 ifa = rtnl_dereference(idev->ifa_list);
457 if (c < IEEE80211_BSS_ARP_ADDR_LIST_LEN)
458 vif_cfg->arp_addr_list[c] = ifa->ifa_address;
459 ifa = rtnl_dereference(ifa->ifa_next);
463 vif_cfg->arp_addr_cnt = c;
465 /* Configure driver only if associated (which also implies it is up) */
466 if (ifmgd->associated)
467 ieee80211_vif_cfg_change_notify(sdata, BSS_CHANGED_ARP_FILTER);
475 #if IS_ENABLED(CONFIG_IPV6)
476 static int ieee80211_ifa6_changed(struct notifier_block *nb,
477 unsigned long data, void *arg)
479 struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)arg;
480 struct inet6_dev *idev = ifa->idev;
481 struct net_device *ndev = ifa->idev->dev;
482 struct ieee80211_local *local =
483 container_of(nb, struct ieee80211_local, ifa6_notifier);
484 struct wireless_dev *wdev = ndev->ieee80211_ptr;
485 struct ieee80211_sub_if_data *sdata;
487 /* Make sure it's our interface that got changed */
488 if (!wdev || wdev->wiphy != local->hw.wiphy)
491 sdata = IEEE80211_DEV_TO_SUB_IF(ndev);
494 * For now only support station mode. This is mostly because
495 * doing AP would have to handle AP_VLAN in some way ...
497 if (sdata->vif.type != NL80211_IFTYPE_STATION)
500 drv_ipv6_addr_change(local, sdata, idev);
506 /* There isn't a lot of sense in it, but you can transmit anything you like */
507 static const struct ieee80211_txrx_stypes
508 ieee80211_default_mgmt_stypes[NUM_NL80211_IFTYPES] = {
509 [NL80211_IFTYPE_ADHOC] = {
511 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
512 BIT(IEEE80211_STYPE_AUTH >> 4) |
513 BIT(IEEE80211_STYPE_DEAUTH >> 4) |
514 BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
516 [NL80211_IFTYPE_STATION] = {
519 * To support Pre Association Security Negotiation (PASN) while
520 * already associated to one AP, allow user space to register to
521 * Rx authentication frames, so that the user space logic would
522 * be able to receive/handle authentication frames from a
523 * different AP as part of PASN.
524 * It is expected that user space would intelligently register
525 * for Rx authentication frames, i.e., only when PASN is used
526 * and configure a match filter only for PASN authentication
527 * algorithm, as otherwise the MLME functionality of mac80211
530 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
531 BIT(IEEE80211_STYPE_AUTH >> 4) |
532 BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
534 [NL80211_IFTYPE_AP] = {
536 .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) |
537 BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) |
538 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) |
539 BIT(IEEE80211_STYPE_DISASSOC >> 4) |
540 BIT(IEEE80211_STYPE_AUTH >> 4) |
541 BIT(IEEE80211_STYPE_DEAUTH >> 4) |
542 BIT(IEEE80211_STYPE_ACTION >> 4),
544 [NL80211_IFTYPE_AP_VLAN] = {
547 .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) |
548 BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) |
549 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) |
550 BIT(IEEE80211_STYPE_DISASSOC >> 4) |
551 BIT(IEEE80211_STYPE_AUTH >> 4) |
552 BIT(IEEE80211_STYPE_DEAUTH >> 4) |
553 BIT(IEEE80211_STYPE_ACTION >> 4),
555 [NL80211_IFTYPE_P2P_CLIENT] = {
557 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
558 BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
560 [NL80211_IFTYPE_P2P_GO] = {
562 .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) |
563 BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) |
564 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) |
565 BIT(IEEE80211_STYPE_DISASSOC >> 4) |
566 BIT(IEEE80211_STYPE_AUTH >> 4) |
567 BIT(IEEE80211_STYPE_DEAUTH >> 4) |
568 BIT(IEEE80211_STYPE_ACTION >> 4),
570 [NL80211_IFTYPE_MESH_POINT] = {
572 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
573 BIT(IEEE80211_STYPE_AUTH >> 4) |
574 BIT(IEEE80211_STYPE_DEAUTH >> 4),
576 [NL80211_IFTYPE_P2P_DEVICE] = {
578 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
579 BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
583 static const struct ieee80211_ht_cap mac80211_ht_capa_mod_mask = {
584 .ampdu_params_info = IEEE80211_HT_AMPDU_PARM_FACTOR |
585 IEEE80211_HT_AMPDU_PARM_DENSITY,
587 .cap_info = cpu_to_le16(IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
588 IEEE80211_HT_CAP_MAX_AMSDU |
589 IEEE80211_HT_CAP_SGI_20 |
590 IEEE80211_HT_CAP_SGI_40 |
591 IEEE80211_HT_CAP_TX_STBC |
592 IEEE80211_HT_CAP_RX_STBC |
593 IEEE80211_HT_CAP_LDPC_CODING |
594 IEEE80211_HT_CAP_40MHZ_INTOLERANT),
596 .rx_mask = { 0xff, 0xff, 0xff, 0xff, 0xff,
597 0xff, 0xff, 0xff, 0xff, 0xff, },
601 static const struct ieee80211_vht_cap mac80211_vht_capa_mod_mask = {
603 cpu_to_le32(IEEE80211_VHT_CAP_RXLDPC |
604 IEEE80211_VHT_CAP_SHORT_GI_80 |
605 IEEE80211_VHT_CAP_SHORT_GI_160 |
606 IEEE80211_VHT_CAP_RXSTBC_MASK |
607 IEEE80211_VHT_CAP_TXSTBC |
608 IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE |
609 IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE |
610 IEEE80211_VHT_CAP_TX_ANTENNA_PATTERN |
611 IEEE80211_VHT_CAP_RX_ANTENNA_PATTERN |
612 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK),
614 .rx_mcs_map = cpu_to_le16(~0),
615 .tx_mcs_map = cpu_to_le16(~0),
619 struct ieee80211_hw *ieee80211_alloc_hw_nm(size_t priv_data_len,
620 const struct ieee80211_ops *ops,
621 const char *requested_name)
623 struct ieee80211_local *local;
628 if (WARN_ON(!ops->tx || !ops->start || !ops->stop || !ops->config ||
629 !ops->add_interface || !ops->remove_interface ||
630 !ops->configure_filter))
633 if (WARN_ON(ops->sta_state && (ops->sta_add || ops->sta_remove)))
636 if (WARN_ON(!!ops->link_info_changed != !!ops->vif_cfg_changed ||
637 (ops->link_info_changed && ops->bss_info_changed)))
640 /* check all or no channel context operations exist */
641 i = !!ops->add_chanctx + !!ops->remove_chanctx +
642 !!ops->change_chanctx + !!ops->assign_vif_chanctx +
643 !!ops->unassign_vif_chanctx;
644 if (WARN_ON(i != 0 && i != 5))
646 use_chanctx = i == 5;
648 /* Ensure 32-byte alignment of our private data and hw private data.
649 * We use the wiphy priv data for both our ieee80211_local and for
650 * the driver's private data
652 * In memory it'll be like this:
654 * +-------------------------+
656 * +-------------------------+
657 * | struct ieee80211_local |
658 * +-------------------------+
659 * | driver's private data |
660 * +-------------------------+
663 priv_size = ALIGN(sizeof(*local), NETDEV_ALIGN) + priv_data_len;
665 wiphy = wiphy_new_nm(&mac80211_config_ops, priv_size, requested_name);
670 wiphy->mgmt_stypes = ieee80211_default_mgmt_stypes;
672 wiphy->privid = mac80211_wiphy_privid;
674 wiphy->flags |= WIPHY_FLAG_NETNS_OK |
675 WIPHY_FLAG_4ADDR_AP |
676 WIPHY_FLAG_4ADDR_STATION |
677 WIPHY_FLAG_REPORTS_OBSS |
678 WIPHY_FLAG_OFFCHAN_TX;
680 if (!use_chanctx || ops->remain_on_channel)
681 wiphy->flags |= WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL;
683 wiphy->features |= NL80211_FEATURE_SK_TX_STATUS |
684 NL80211_FEATURE_SAE |
685 NL80211_FEATURE_HT_IBSS |
686 NL80211_FEATURE_VIF_TXPOWER |
687 NL80211_FEATURE_MAC_ON_CREATE |
688 NL80211_FEATURE_USERSPACE_MPM |
689 NL80211_FEATURE_FULL_AP_CLIENT_STATE;
690 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_FILS_STA);
691 wiphy_ext_feature_set(wiphy,
692 NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211);
693 wiphy_ext_feature_set(wiphy,
694 NL80211_EXT_FEATURE_CONTROL_PORT_NO_PREAUTH);
695 wiphy_ext_feature_set(wiphy,
696 NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211_TX_STATUS);
697 wiphy_ext_feature_set(wiphy,
698 NL80211_EXT_FEATURE_SCAN_FREQ_KHZ);
699 wiphy_ext_feature_set(wiphy,
700 NL80211_EXT_FEATURE_POWERED_ADDR_CHANGE);
703 wiphy->features |= NL80211_FEATURE_LOW_PRIORITY_SCAN |
704 NL80211_FEATURE_AP_SCAN;
706 * if the driver behaves correctly using the probe request
707 * (template) from mac80211, then both of these should be
708 * supported even with hw scan - but let drivers opt in.
710 wiphy_ext_feature_set(wiphy,
711 NL80211_EXT_FEATURE_SCAN_RANDOM_SN);
712 wiphy_ext_feature_set(wiphy,
713 NL80211_EXT_FEATURE_SCAN_MIN_PREQ_CONTENT);
717 wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
719 if (ops->wake_tx_queue)
720 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_TXQS);
722 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_RRM);
724 wiphy->bss_priv_size = sizeof(struct ieee80211_bss);
726 local = wiphy_priv(wiphy);
728 if (sta_info_init(local))
731 local->hw.wiphy = wiphy;
733 local->hw.priv = (char *)local + ALIGN(sizeof(*local), NETDEV_ALIGN);
736 local->use_chanctx = use_chanctx;
739 * We need a bit of data queued to build aggregates properly, so
740 * instruct the TCP stack to allow more than a single ms of data
741 * to be queued in the stack. The value is a bit-shift of 1
742 * second, so 7 is ~8ms of queued data. Only affects local TCP
744 * This is the default, anyhow - drivers may need to override it
745 * for local reasons (longer buffers, longer completion time, or
748 local->hw.tx_sk_pacing_shift = 7;
750 /* set up some defaults */
751 local->hw.queues = 1;
752 local->hw.max_rates = 1;
753 local->hw.max_report_rates = 0;
754 local->hw.max_rx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF_HT;
755 local->hw.max_tx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF_HT;
756 local->hw.offchannel_tx_hw_queue = IEEE80211_INVAL_HW_QUEUE;
757 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
758 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
759 local->hw.radiotap_mcs_details = IEEE80211_RADIOTAP_MCS_HAVE_MCS |
760 IEEE80211_RADIOTAP_MCS_HAVE_GI |
761 IEEE80211_RADIOTAP_MCS_HAVE_BW;
762 local->hw.radiotap_vht_details = IEEE80211_RADIOTAP_VHT_KNOWN_GI |
763 IEEE80211_RADIOTAP_VHT_KNOWN_BANDWIDTH;
764 local->hw.uapsd_queues = IEEE80211_DEFAULT_UAPSD_QUEUES;
765 local->hw.uapsd_max_sp_len = IEEE80211_DEFAULT_MAX_SP_LEN;
766 local->hw.max_mtu = IEEE80211_MAX_DATA_LEN;
767 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
768 wiphy->ht_capa_mod_mask = &mac80211_ht_capa_mod_mask;
769 wiphy->vht_capa_mod_mask = &mac80211_vht_capa_mod_mask;
771 local->ext_capa[7] = WLAN_EXT_CAPA8_OPMODE_NOTIF;
773 wiphy->extended_capabilities = local->ext_capa;
774 wiphy->extended_capabilities_mask = local->ext_capa;
775 wiphy->extended_capabilities_len =
776 ARRAY_SIZE(local->ext_capa);
778 INIT_LIST_HEAD(&local->interfaces);
779 INIT_LIST_HEAD(&local->mon_list);
781 __hw_addr_init(&local->mc_list);
783 mutex_init(&local->iflist_mtx);
784 mutex_init(&local->mtx);
786 mutex_init(&local->key_mtx);
787 spin_lock_init(&local->filter_lock);
788 spin_lock_init(&local->rx_path_lock);
789 spin_lock_init(&local->queue_stop_reason_lock);
791 for (i = 0; i < IEEE80211_NUM_ACS; i++) {
792 INIT_LIST_HEAD(&local->active_txqs[i]);
793 spin_lock_init(&local->active_txq_lock[i]);
794 local->aql_txq_limit_low[i] = IEEE80211_DEFAULT_AQL_TXQ_LIMIT_L;
795 local->aql_txq_limit_high[i] =
796 IEEE80211_DEFAULT_AQL_TXQ_LIMIT_H;
797 atomic_set(&local->aql_ac_pending_airtime[i], 0);
800 local->airtime_flags = AIRTIME_USE_TX | AIRTIME_USE_RX;
801 local->aql_threshold = IEEE80211_AQL_THRESHOLD;
802 atomic_set(&local->aql_total_pending_airtime, 0);
804 INIT_LIST_HEAD(&local->chanctx_list);
805 mutex_init(&local->chanctx_mtx);
807 wiphy_delayed_work_init(&local->scan_work, ieee80211_scan_work);
809 INIT_WORK(&local->restart_work, ieee80211_restart_work);
811 wiphy_work_init(&local->radar_detected_work,
812 ieee80211_dfs_radar_detected_work);
814 INIT_WORK(&local->reconfig_filter, ieee80211_reconfig_filter);
815 local->smps_mode = IEEE80211_SMPS_OFF;
817 INIT_WORK(&local->dynamic_ps_enable_work,
818 ieee80211_dynamic_ps_enable_work);
819 INIT_WORK(&local->dynamic_ps_disable_work,
820 ieee80211_dynamic_ps_disable_work);
821 timer_setup(&local->dynamic_ps_timer, ieee80211_dynamic_ps_timer, 0);
823 wiphy_work_init(&local->sched_scan_stopped_work,
824 ieee80211_sched_scan_stopped_work);
826 spin_lock_init(&local->ack_status_lock);
827 idr_init(&local->ack_status_frames);
829 for (i = 0; i < IEEE80211_MAX_QUEUES; i++) {
830 skb_queue_head_init(&local->pending[i]);
831 atomic_set(&local->agg_queue_stop[i], 0);
833 tasklet_setup(&local->tx_pending_tasklet, ieee80211_tx_pending);
835 if (ops->wake_tx_queue)
836 tasklet_setup(&local->wake_txqs_tasklet, ieee80211_wake_txqs);
838 tasklet_setup(&local->tasklet, ieee80211_tasklet_handler);
840 skb_queue_head_init(&local->skb_queue);
841 skb_queue_head_init(&local->skb_queue_unreliable);
843 ieee80211_alloc_led_names(local);
845 ieee80211_roc_setup(local);
847 local->hw.radiotap_timestamp.units_pos = -1;
848 local->hw.radiotap_timestamp.accuracy = -1;
855 EXPORT_SYMBOL(ieee80211_alloc_hw_nm);
857 static int ieee80211_init_cipher_suites(struct ieee80211_local *local)
859 bool have_wep = !fips_enabled; /* FIPS does not permit the use of RC4 */
860 bool have_mfp = ieee80211_hw_check(&local->hw, MFP_CAPABLE);
863 static const u32 cipher_suites[] = {
864 /* keep WEP first, it may be removed below */
865 WLAN_CIPHER_SUITE_WEP40,
866 WLAN_CIPHER_SUITE_WEP104,
867 WLAN_CIPHER_SUITE_TKIP,
868 WLAN_CIPHER_SUITE_CCMP,
869 WLAN_CIPHER_SUITE_CCMP_256,
870 WLAN_CIPHER_SUITE_GCMP,
871 WLAN_CIPHER_SUITE_GCMP_256,
873 /* keep last -- depends on hw flags! */
874 WLAN_CIPHER_SUITE_AES_CMAC,
875 WLAN_CIPHER_SUITE_BIP_CMAC_256,
876 WLAN_CIPHER_SUITE_BIP_GMAC_128,
877 WLAN_CIPHER_SUITE_BIP_GMAC_256,
880 if (ieee80211_hw_check(&local->hw, SW_CRYPTO_CONTROL) ||
881 local->hw.wiphy->cipher_suites) {
882 /* If the driver advertises, or doesn't support SW crypto,
883 * we only need to remove WEP if necessary.
888 /* well if it has _no_ ciphers ... fine */
889 if (!local->hw.wiphy->n_cipher_suites)
892 /* Driver provides cipher suites, but we need to exclude WEP */
893 suites = kmemdup(local->hw.wiphy->cipher_suites,
894 sizeof(u32) * local->hw.wiphy->n_cipher_suites,
899 for (r = 0; r < local->hw.wiphy->n_cipher_suites; r++) {
900 u32 suite = local->hw.wiphy->cipher_suites[r];
902 if (suite == WLAN_CIPHER_SUITE_WEP40 ||
903 suite == WLAN_CIPHER_SUITE_WEP104)
908 /* assign the (software supported and perhaps offloaded)
911 local->hw.wiphy->cipher_suites = cipher_suites;
912 local->hw.wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
915 local->hw.wiphy->n_cipher_suites -= 4;
918 local->hw.wiphy->cipher_suites += 2;
919 local->hw.wiphy->n_cipher_suites -= 2;
922 /* not dynamically allocated, so just return */
926 local->hw.wiphy->cipher_suites = suites;
927 local->hw.wiphy->n_cipher_suites = w;
928 local->wiphy_ciphers_allocated = true;
933 int ieee80211_register_hw(struct ieee80211_hw *hw)
935 struct ieee80211_local *local = hw_to_local(hw);
937 enum nl80211_band band;
938 int channels, max_bitrates;
939 bool supp_ht, supp_vht, supp_he, supp_eht;
940 struct cfg80211_chan_def dflt_chandef = {};
942 if (ieee80211_hw_check(hw, QUEUE_CONTROL) &&
943 (local->hw.offchannel_tx_hw_queue == IEEE80211_INVAL_HW_QUEUE ||
944 local->hw.offchannel_tx_hw_queue >= local->hw.queues))
947 if ((hw->wiphy->features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH) &&
948 (!local->ops->tdls_channel_switch ||
949 !local->ops->tdls_cancel_channel_switch ||
950 !local->ops->tdls_recv_channel_switch))
953 if (WARN_ON(ieee80211_hw_check(hw, SUPPORTS_TX_FRAG) &&
954 !local->ops->set_frag_threshold))
957 if (WARN_ON(local->hw.wiphy->interface_modes &
958 BIT(NL80211_IFTYPE_NAN) &&
959 (!local->ops->start_nan || !local->ops->stop_nan)))
962 if (hw->wiphy->flags & WIPHY_FLAG_SUPPORTS_MLO) {
964 * For drivers capable of doing MLO, assume modern driver
965 * or firmware facilities, so software doesn't have to do
966 * as much, e.g. monitoring beacons would be hard if we
967 * might not even know which link is active at which time.
969 if (WARN_ON(!local->use_chanctx))
972 if (WARN_ON(!local->ops->link_info_changed))
975 if (WARN_ON(!ieee80211_hw_check(hw, HAS_RATE_CONTROL)))
978 if (WARN_ON(!ieee80211_hw_check(hw, AMPDU_AGGREGATION)))
981 if (WARN_ON(ieee80211_hw_check(hw, HOST_BROADCAST_PS_BUFFERING)))
984 if (WARN_ON(ieee80211_hw_check(hw, SUPPORTS_PS) &&
985 (!ieee80211_hw_check(hw, SUPPORTS_DYNAMIC_PS) ||
986 ieee80211_hw_check(hw, PS_NULLFUNC_STACK))))
989 if (WARN_ON(!ieee80211_hw_check(hw, MFP_CAPABLE)))
992 if (WARN_ON(!ieee80211_hw_check(hw, CONNECTION_MONITOR)))
995 if (WARN_ON(ieee80211_hw_check(hw, NEED_DTIM_BEFORE_ASSOC)))
998 if (WARN_ON(ieee80211_hw_check(hw, TIMING_BEACON_ONLY)))
1001 if (WARN_ON(!ieee80211_hw_check(hw, AP_LINK_PS)))
1004 if (WARN_ON(ieee80211_hw_check(hw, DEAUTH_NEED_MGD_TX_PREP)))
1009 if (hw->wiphy->wowlan && (!local->ops->suspend || !local->ops->resume))
1013 if (!local->use_chanctx) {
1014 for (i = 0; i < local->hw.wiphy->n_iface_combinations; i++) {
1015 const struct ieee80211_iface_combination *comb;
1017 comb = &local->hw.wiphy->iface_combinations[i];
1019 if (comb->num_different_channels > 1)
1023 /* DFS is not supported with multi-channel combinations yet */
1024 for (i = 0; i < local->hw.wiphy->n_iface_combinations; i++) {
1025 const struct ieee80211_iface_combination *comb;
1027 comb = &local->hw.wiphy->iface_combinations[i];
1029 if (comb->radar_detect_widths &&
1030 comb->num_different_channels > 1)
1035 /* Only HW csum features are currently compatible with mac80211 */
1036 if (WARN_ON(hw->netdev_features & ~MAC80211_SUPPORTED_FEATURES))
1039 if (hw->max_report_rates == 0)
1040 hw->max_report_rates = hw->max_rates;
1042 local->rx_chains = 1;
1045 * generic code guarantees at least one band,
1046 * set this very early because much code assumes
1047 * that hw.conf.channel is assigned
1055 for (band = 0; band < NUM_NL80211_BANDS; band++) {
1056 struct ieee80211_supported_band *sband;
1058 sband = local->hw.wiphy->bands[band];
1062 if (!dflt_chandef.chan) {
1064 * Assign the first enabled channel to dflt_chandef
1065 * from the list of channels
1067 for (i = 0; i < sband->n_channels; i++)
1068 if (!(sband->channels[i].flags &
1069 IEEE80211_CHAN_DISABLED))
1071 /* if none found then use the first anyway */
1072 if (i == sband->n_channels)
1074 cfg80211_chandef_create(&dflt_chandef,
1075 &sband->channels[i],
1076 NL80211_CHAN_NO_HT);
1077 /* init channel we're on */
1078 if (!local->use_chanctx && !local->_oper_chandef.chan) {
1079 local->hw.conf.chandef = dflt_chandef;
1080 local->_oper_chandef = dflt_chandef;
1082 local->monitor_chandef = dflt_chandef;
1085 channels += sband->n_channels;
1087 if (max_bitrates < sband->n_bitrates)
1088 max_bitrates = sband->n_bitrates;
1089 supp_ht = supp_ht || sband->ht_cap.ht_supported;
1090 supp_vht = supp_vht || sband->vht_cap.vht_supported;
1092 for (i = 0; i < sband->n_iftype_data; i++) {
1093 const struct ieee80211_sband_iftype_data *iftd;
1095 iftd = &sband->iftype_data[i];
1097 supp_he = supp_he || iftd->he_cap.has_he;
1098 supp_eht = supp_eht || iftd->eht_cap.has_eht;
1101 /* HT, VHT, HE require QoS, thus >= 4 queues */
1102 if (WARN_ON(local->hw.queues < IEEE80211_NUM_ACS &&
1103 (supp_ht || supp_vht || supp_he)))
1106 /* EHT requires HE support */
1107 if (WARN_ON(supp_eht && !supp_he))
1110 if (!sband->ht_cap.ht_supported)
1113 /* TODO: consider VHT for RX chains, hopefully it's the same */
1115 max(ieee80211_mcs_to_chains(&sband->ht_cap.mcs),
1118 /* no need to mask, SM_PS_DISABLED has all bits set */
1119 sband->ht_cap.cap |= WLAN_HT_CAP_SM_PS_DISABLED <<
1120 IEEE80211_HT_CAP_SM_PS_SHIFT;
1123 /* if low-level driver supports AP, we also support VLAN.
1124 * drivers advertising SW_CRYPTO_CONTROL should enable AP_VLAN
1125 * based on their support to transmit SW encrypted packets.
1127 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_AP) &&
1128 !ieee80211_hw_check(&local->hw, SW_CRYPTO_CONTROL)) {
1129 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP_VLAN);
1130 hw->wiphy->software_iftypes |= BIT(NL80211_IFTYPE_AP_VLAN);
1133 /* mac80211 always supports monitor */
1134 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR);
1135 hw->wiphy->software_iftypes |= BIT(NL80211_IFTYPE_MONITOR);
1137 /* mac80211 doesn't support more than one IBSS interface right now */
1138 for (i = 0; i < hw->wiphy->n_iface_combinations; i++) {
1139 const struct ieee80211_iface_combination *c;
1142 c = &hw->wiphy->iface_combinations[i];
1144 for (j = 0; j < c->n_limits; j++)
1145 if ((c->limits[j].types & BIT(NL80211_IFTYPE_ADHOC)) &&
1146 c->limits[j].max > 1)
1150 local->int_scan_req = kzalloc(sizeof(*local->int_scan_req) +
1151 sizeof(void *) * channels, GFP_KERNEL);
1152 if (!local->int_scan_req)
1155 for (band = 0; band < NUM_NL80211_BANDS; band++) {
1156 if (!local->hw.wiphy->bands[band])
1158 local->int_scan_req->rates[band] = (u32) -1;
1161 #ifndef CONFIG_MAC80211_MESH
1162 /* mesh depends on Kconfig, but drivers should set it if they want */
1163 local->hw.wiphy->interface_modes &= ~BIT(NL80211_IFTYPE_MESH_POINT);
1166 /* if the underlying driver supports mesh, mac80211 will (at least)
1167 * provide routing of mesh authentication frames to userspace */
1168 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_MESH_POINT))
1169 local->hw.wiphy->flags |= WIPHY_FLAG_MESH_AUTH;
1171 /* mac80211 supports control port protocol changing */
1172 local->hw.wiphy->flags |= WIPHY_FLAG_CONTROL_PORT_PROTOCOL;
1174 if (ieee80211_hw_check(&local->hw, SIGNAL_DBM)) {
1175 local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
1176 } else if (ieee80211_hw_check(&local->hw, SIGNAL_UNSPEC)) {
1177 local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC;
1178 if (hw->max_signal <= 0) {
1180 goto fail_workqueue;
1184 /* Mac80211 and therefore all drivers using SW crypto only
1185 * are able to handle PTK rekeys and Extended Key ID.
1187 if (!local->ops->set_key) {
1188 wiphy_ext_feature_set(local->hw.wiphy,
1189 NL80211_EXT_FEATURE_CAN_REPLACE_PTK0);
1190 wiphy_ext_feature_set(local->hw.wiphy,
1191 NL80211_EXT_FEATURE_EXT_KEY_ID);
1194 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_ADHOC))
1195 wiphy_ext_feature_set(local->hw.wiphy,
1196 NL80211_EXT_FEATURE_DEL_IBSS_STA);
1199 * Calculate scan IE length -- we need this to alloc
1200 * memory and to subtract from the driver limit. It
1201 * includes the DS Params, (extended) supported rates, and HT
1202 * information -- SSID is the driver's responsibility.
1204 local->scan_ies_len = 4 + max_bitrates /* (ext) supp rates */ +
1207 local->scan_ies_len += 2 + sizeof(struct ieee80211_ht_cap);
1210 local->scan_ies_len +=
1211 2 + sizeof(struct ieee80211_vht_cap);
1214 * HE cap element is variable in size - set len to allow max size */
1216 local->scan_ies_len +=
1217 3 + sizeof(struct ieee80211_he_cap_elem) +
1218 sizeof(struct ieee80211_he_mcs_nss_supp) +
1219 IEEE80211_HE_PPE_THRES_MAX_LEN;
1222 local->scan_ies_len +=
1223 3 + sizeof(struct ieee80211_eht_cap_elem) +
1224 sizeof(struct ieee80211_eht_mcs_nss_supp) +
1225 IEEE80211_EHT_PPE_THRES_MAX_LEN;
1228 if (!local->ops->hw_scan) {
1229 /* For hw_scan, driver needs to set these up. */
1230 local->hw.wiphy->max_scan_ssids = 4;
1231 local->hw.wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
1235 * If the driver supports any scan IEs, then assume the
1236 * limit includes the IEs mac80211 will add, otherwise
1237 * leave it at zero and let the driver sort it out; we
1238 * still pass our IEs to the driver but userspace will
1239 * not be allowed to in that case.
1241 if (local->hw.wiphy->max_scan_ie_len)
1242 local->hw.wiphy->max_scan_ie_len -= local->scan_ies_len;
1244 result = ieee80211_init_cipher_suites(local);
1246 goto fail_workqueue;
1248 if (!local->ops->remain_on_channel)
1249 local->hw.wiphy->max_remain_on_channel_duration = 5000;
1251 /* mac80211 based drivers don't support internal TDLS setup */
1252 if (local->hw.wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS)
1253 local->hw.wiphy->flags |= WIPHY_FLAG_TDLS_EXTERNAL_SETUP;
1255 /* mac80211 supports eCSA, if the driver supports STA CSA at all */
1256 if (ieee80211_hw_check(&local->hw, CHANCTX_STA_CSA))
1257 local->ext_capa[0] |= WLAN_EXT_CAPA1_EXT_CHANNEL_SWITCHING;
1259 /* mac80211 supports multi BSSID, if the driver supports it */
1260 if (ieee80211_hw_check(&local->hw, SUPPORTS_MULTI_BSSID)) {
1261 local->hw.wiphy->support_mbssid = true;
1262 if (ieee80211_hw_check(&local->hw,
1263 SUPPORTS_ONLY_HE_MULTI_BSSID))
1264 local->hw.wiphy->support_only_he_mbssid = true;
1266 local->ext_capa[2] |=
1267 WLAN_EXT_CAPA3_MULTI_BSSID_SUPPORT;
1270 local->hw.wiphy->max_num_csa_counters = IEEE80211_MAX_CNTDWN_COUNTERS_NUM;
1273 * We use the number of queues for feature tests (QoS, HT) internally
1274 * so restrict them appropriately.
1276 if (hw->queues > IEEE80211_MAX_QUEUES)
1277 hw->queues = IEEE80211_MAX_QUEUES;
1280 alloc_ordered_workqueue("%s", 0, wiphy_name(local->hw.wiphy));
1281 if (!local->workqueue) {
1283 goto fail_workqueue;
1287 * The hardware needs headroom for sending the frame,
1288 * and we need some headroom for passing the frame to monitor
1289 * interfaces, but never both at the same time.
1291 local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom,
1292 IEEE80211_TX_STATUS_HEADROOM);
1295 * if the driver doesn't specify a max listen interval we
1296 * use 5 which should be a safe default
1298 if (local->hw.max_listen_interval == 0)
1299 local->hw.max_listen_interval = 5;
1301 local->hw.conf.listen_interval = local->hw.max_listen_interval;
1303 local->dynamic_ps_forced_timeout = -1;
1305 if (!local->hw.max_nan_de_entries)
1306 local->hw.max_nan_de_entries = IEEE80211_MAX_NAN_INSTANCE_ID;
1308 if (!local->hw.weight_multiplier)
1309 local->hw.weight_multiplier = 1;
1311 ieee80211_wep_init(local);
1313 local->hw.conf.flags = IEEE80211_CONF_IDLE;
1315 ieee80211_led_init(local);
1317 result = ieee80211_txq_setup_flows(local);
1322 result = ieee80211_init_rate_ctrl_alg(local,
1323 hw->rate_control_algorithm);
1326 wiphy_debug(local->hw.wiphy,
1327 "Failed to initialize rate control algorithm\n");
1331 if (local->rate_ctrl) {
1332 clear_bit(IEEE80211_HW_SUPPORTS_VHT_EXT_NSS_BW, hw->flags);
1333 if (local->rate_ctrl->ops->capa & RATE_CTRL_CAPA_VHT_EXT_NSS_BW)
1334 ieee80211_hw_set(hw, SUPPORTS_VHT_EXT_NSS_BW);
1338 * If the VHT capabilities don't have IEEE80211_VHT_EXT_NSS_BW_CAPABLE,
1339 * or have it when we don't, copy the sband structure and set/clear it.
1340 * This is necessary because rate scaling algorithms could be switched
1341 * and have different support values.
1342 * Print a message so that in the common case the reallocation can be
1345 BUILD_BUG_ON(NUM_NL80211_BANDS > 8 * sizeof(local->sband_allocated));
1346 for (band = 0; band < NUM_NL80211_BANDS; band++) {
1347 struct ieee80211_supported_band *sband;
1348 bool local_cap, ie_cap;
1350 local_cap = ieee80211_hw_check(hw, SUPPORTS_VHT_EXT_NSS_BW);
1352 sband = local->hw.wiphy->bands[band];
1353 if (!sband || !sband->vht_cap.vht_supported)
1356 ie_cap = !!(sband->vht_cap.vht_mcs.tx_highest &
1357 cpu_to_le16(IEEE80211_VHT_EXT_NSS_BW_CAPABLE));
1359 if (local_cap == ie_cap)
1362 sband = kmemdup(sband, sizeof(*sband), GFP_KERNEL);
1368 wiphy_dbg(hw->wiphy, "copying sband (band %d) due to VHT EXT NSS BW flag\n",
1371 sband->vht_cap.vht_mcs.tx_highest ^=
1372 cpu_to_le16(IEEE80211_VHT_EXT_NSS_BW_CAPABLE);
1374 local->hw.wiphy->bands[band] = sband;
1375 local->sband_allocated |= BIT(band);
1378 result = wiphy_register(local->hw.wiphy);
1380 goto fail_wiphy_register;
1382 debugfs_hw_add(local);
1383 rate_control_add_debugfs(local);
1386 wiphy_lock(hw->wiphy);
1388 /* add one default STA interface if supported */
1389 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_STATION) &&
1390 !ieee80211_hw_check(hw, NO_AUTO_VIF)) {
1391 struct vif_params params = {0};
1393 result = ieee80211_if_add(local, "wlan%d", NET_NAME_ENUM, NULL,
1394 NL80211_IFTYPE_STATION, ¶ms);
1396 wiphy_warn(local->hw.wiphy,
1397 "Failed to add default virtual iface\n");
1400 wiphy_unlock(hw->wiphy);
1404 local->ifa_notifier.notifier_call = ieee80211_ifa_changed;
1405 result = register_inetaddr_notifier(&local->ifa_notifier);
1410 #if IS_ENABLED(CONFIG_IPV6)
1411 local->ifa6_notifier.notifier_call = ieee80211_ifa6_changed;
1412 result = register_inet6addr_notifier(&local->ifa6_notifier);
1419 #if IS_ENABLED(CONFIG_IPV6)
1422 unregister_inetaddr_notifier(&local->ifa_notifier);
1425 #if defined(CONFIG_INET) || defined(CONFIG_IPV6)
1428 wiphy_unregister(local->hw.wiphy);
1429 fail_wiphy_register:
1431 rate_control_deinitialize(local);
1432 ieee80211_remove_interfaces(local);
1436 ieee80211_led_exit(local);
1437 destroy_workqueue(local->workqueue);
1439 if (local->wiphy_ciphers_allocated) {
1440 kfree(local->hw.wiphy->cipher_suites);
1441 local->wiphy_ciphers_allocated = false;
1443 kfree(local->int_scan_req);
1446 EXPORT_SYMBOL(ieee80211_register_hw);
1448 void ieee80211_unregister_hw(struct ieee80211_hw *hw)
1450 struct ieee80211_local *local = hw_to_local(hw);
1452 tasklet_kill(&local->tx_pending_tasklet);
1453 tasklet_kill(&local->tasklet);
1456 unregister_inetaddr_notifier(&local->ifa_notifier);
1458 #if IS_ENABLED(CONFIG_IPV6)
1459 unregister_inet6addr_notifier(&local->ifa6_notifier);
1465 * At this point, interface list manipulations are fine
1466 * because the driver cannot be handing us frames any
1467 * more and the tasklet is killed.
1469 ieee80211_remove_interfaces(local);
1471 wiphy_lock(local->hw.wiphy);
1472 wiphy_delayed_work_cancel(local->hw.wiphy, &local->roc_work);
1473 wiphy_work_cancel(local->hw.wiphy, &local->sched_scan_stopped_work);
1474 wiphy_work_cancel(local->hw.wiphy, &local->radar_detected_work);
1475 wiphy_unlock(local->hw.wiphy);
1478 cancel_work_sync(&local->restart_work);
1479 cancel_work_sync(&local->reconfig_filter);
1481 ieee80211_clear_tx_pending(local);
1482 rate_control_deinitialize(local);
1484 if (skb_queue_len(&local->skb_queue) ||
1485 skb_queue_len(&local->skb_queue_unreliable))
1486 wiphy_warn(local->hw.wiphy, "skb_queue not empty\n");
1487 skb_queue_purge(&local->skb_queue);
1488 skb_queue_purge(&local->skb_queue_unreliable);
1490 wiphy_unregister(local->hw.wiphy);
1491 destroy_workqueue(local->workqueue);
1492 ieee80211_led_exit(local);
1493 kfree(local->int_scan_req);
1495 EXPORT_SYMBOL(ieee80211_unregister_hw);
1497 static int ieee80211_free_ack_frame(int id, void *p, void *data)
1499 WARN_ONCE(1, "Have pending ack frames!\n");
1504 void ieee80211_free_hw(struct ieee80211_hw *hw)
1506 struct ieee80211_local *local = hw_to_local(hw);
1507 enum nl80211_band band;
1509 mutex_destroy(&local->iflist_mtx);
1510 mutex_destroy(&local->mtx);
1512 if (local->wiphy_ciphers_allocated) {
1513 kfree(local->hw.wiphy->cipher_suites);
1514 local->wiphy_ciphers_allocated = false;
1517 idr_for_each(&local->ack_status_frames,
1518 ieee80211_free_ack_frame, NULL);
1519 idr_destroy(&local->ack_status_frames);
1521 sta_info_stop(local);
1523 ieee80211_free_led_names(local);
1525 for (band = 0; band < NUM_NL80211_BANDS; band++) {
1526 if (!(local->sband_allocated & BIT(band)))
1528 kfree(local->hw.wiphy->bands[band]);
1531 wiphy_free(local->hw.wiphy);
1533 EXPORT_SYMBOL(ieee80211_free_hw);
1535 static int __init ieee80211_init(void)
1537 struct sk_buff *skb;
1540 BUILD_BUG_ON(sizeof(struct ieee80211_tx_info) > sizeof(skb->cb));
1541 BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, driver_data) +
1542 IEEE80211_TX_INFO_DRIVER_DATA_SIZE > sizeof(skb->cb));
1544 ret = rc80211_minstrel_init();
1548 ret = ieee80211_iface_init();
1554 rc80211_minstrel_exit();
1559 static void __exit ieee80211_exit(void)
1561 rc80211_minstrel_exit();
1565 ieee80211_iface_exit();
1571 subsys_initcall(ieee80211_init);
1572 module_exit(ieee80211_exit);
1574 MODULE_DESCRIPTION("IEEE 802.11 subsystem");
1575 MODULE_LICENSE("GPL");