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 - 2019 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/cfg80211.h>
26 #include <net/addrconf.h>
27
28 #ifdef IPV6_FILTERING
29 #include <net/if_inet6.h>
30 #endif /*IPV6_FILTERING*/
31
32 #include "ieee80211_i.h"
33 #include "driver-ops.h"
34 #include "rate.h"
35 #include "mesh.h"
36 #include "wep.h"
37 #include "led.h"
38 #include "debugfs.h"
39
40 #ifdef CONFIG_DRIVERS_HDF_XR829
41 struct wiphy *g_wiphy = NULL;
42
hdf_wiphy_register(struct wiphy * wiphy)43 void hdf_wiphy_register(struct wiphy *wiphy)
44 {
45 g_wiphy = wiphy;
46 }
47
hdf_wiphy_unregister(void)48 void hdf_wiphy_unregister(void)
49 {
50 g_wiphy = NULL;
51 }
52 #endif
53
ieee80211_configure_filter(struct ieee80211_sub_if_data * sdata)54 void ieee80211_configure_filter(struct ieee80211_sub_if_data *sdata)
55 {
56 u64 mc;
57 unsigned int changed_flags;
58 unsigned int new_flags = 0;
59 struct ieee80211_local *local = sdata->local;
60
61
62 if (atomic_read(&local->iff_allmultis))
63 new_flags |= FIF_ALLMULTI;
64
65 if (local->monitors || test_bit(SCAN_SW_SCANNING, &local->scanning) ||
66 test_bit(SCAN_ONCHANNEL_SCANNING, &local->scanning))
67 new_flags |= FIF_BCN_PRBRESP_PROMISC;
68
69 if (local->fif_probe_req || local->probe_req_reg)
70 new_flags |= FIF_PROBE_REQ;
71
72 if (local->fif_fcsfail)
73 new_flags |= FIF_FCSFAIL;
74
75 if (local->fif_plcpfail)
76 new_flags |= FIF_PLCPFAIL;
77
78 if (local->fif_control)
79 new_flags |= FIF_CONTROL;
80
81 if (local->fif_other_bss)
82 new_flags |= FIF_OTHER_BSS;
83
84 if (local->fif_pspoll)
85 new_flags |= FIF_PSPOLL;
86
87 spin_lock_bh(&local->filter_lock);
88 changed_flags = local->filter_flags ^ new_flags;
89
90 mc = drv_prepare_multicast(local, sdata, &local->mc_list);
91 spin_unlock_bh(&local->filter_lock);
92
93 /* be a bit nasty */
94 new_flags |= (1<<31);
95
96 drv_configure_filter(local, sdata, changed_flags, &new_flags, mc);
97
98 WARN_ON(new_flags & (1<<31));
99
100 local->filter_flags = new_flags & ~(1<<31);
101 }
102
ieee80211_reconfig_filter(struct work_struct * work)103 static void ieee80211_reconfig_filter(struct work_struct *work)
104 {
105 struct ieee80211_local *local =
106 container_of(work, struct ieee80211_local, reconfig_filter);
107 struct ieee80211_sub_if_data *sdata;
108
109 list_for_each_entry(sdata, &local->interfaces, list)
110 ieee80211_configure_filter(sdata);
111 }
112
ieee80211_hw_conf_chan(struct ieee80211_local * local)113 static u32 ieee80211_hw_conf_chan(struct ieee80211_local *local)
114 {
115 struct ieee80211_sub_if_data *sdata;
116 struct cfg80211_chan_def chandef = {};
117 u32 changed = 0;
118 int power;
119 u32 offchannel_flag;
120
121 offchannel_flag = local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL;
122
123 if (local->scan_chandef.chan) {
124 chandef = local->scan_chandef;
125 } else if (local->tmp_channel) {
126 chandef.chan = local->tmp_channel;
127 chandef.width = NL80211_CHAN_WIDTH_20_NOHT;
128 chandef.center_freq1 = chandef.chan->center_freq;
129 } else
130 chandef = local->_oper_chandef;
131
132 WARN(!cfg80211_chandef_valid(&chandef),
133 "control:%d MHz width:%d center: %d/%d MHz",
134 chandef.chan->center_freq, chandef.width,
135 chandef.center_freq1, chandef.center_freq2);
136
137 if (!cfg80211_chandef_identical(&chandef, &local->_oper_chandef))
138 local->hw.conf.flags |= IEEE80211_CONF_OFFCHANNEL;
139 else
140 local->hw.conf.flags &= ~IEEE80211_CONF_OFFCHANNEL;
141
142 offchannel_flag ^= local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL;
143
144 if (offchannel_flag ||
145 !cfg80211_chandef_identical(&local->hw.conf.chandef,
146 &local->_oper_chandef)) {
147 local->hw.conf.chandef = chandef;
148 changed |= IEEE80211_CONF_CHANGE_CHANNEL;
149 }
150
151 if (!conf_is_ht(&local->hw.conf)) {
152 /*
153 * mac80211.h documents that this is only valid
154 * when the channel is set to an HT type, and
155 * that otherwise STATIC is used.
156 */
157 local->hw.conf.smps_mode = IEEE80211_SMPS_STATIC;
158 } else if (local->hw.conf.smps_mode != local->smps_mode) {
159 local->hw.conf.smps_mode = local->smps_mode;
160 changed |= IEEE80211_CONF_CHANGE_SMPS;
161 }
162
163 power = ieee80211_chandef_max_power(&chandef);
164
165 rcu_read_lock();
166 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
167 if (!rcu_access_pointer(sdata->vif.chanctx_conf))
168 continue;
169 if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
170 continue;
171 power = min(power, sdata->vif.bss_conf.txpower);
172 }
173 rcu_read_unlock();
174
175 if (local->hw.conf.power_level != power) {
176 changed |= IEEE80211_CONF_CHANGE_POWER;
177 local->hw.conf.power_level = power;
178 }
179
180 return changed;
181 }
182
ieee80211_hw_config(struct ieee80211_local * local,u32 changed)183 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed)
184 {
185 int ret = 0;
186
187 might_sleep();
188
189 if (!local->use_chanctx)
190 changed |= ieee80211_hw_conf_chan(local);
191 else
192 changed &= ~(IEEE80211_CONF_CHANGE_CHANNEL |
193 IEEE80211_CONF_CHANGE_POWER);
194
195 if (changed && local->open_count) {
196 ret = drv_config(local, changed);
197 /*
198 * Goal:
199 * HW reconfiguration should never fail, the driver has told
200 * us what it can support so it should live up to that promise.
201 *
202 * Current status:
203 * rfkill is not integrated with mac80211 and a
204 * configuration command can thus fail if hardware rfkill
205 * is enabled
206 *
207 * FIXME: integrate rfkill with mac80211 and then add this
208 * WARN_ON() back
209 *
210 */
211 /* WARN_ON(ret); */
212 }
213
214 return ret;
215 }
216
ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data * sdata,u32 changed)217 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
218 u32 changed)
219 {
220 struct ieee80211_local *local = sdata->local;
221
222 if (!changed || sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
223 return;
224
225 drv_bss_info_changed(local, sdata, &sdata->vif.bss_conf, changed);
226 }
227
ieee80211_reset_erp_info(struct ieee80211_sub_if_data * sdata)228 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata)
229 {
230 sdata->vif.bss_conf.use_cts_prot = false;
231 sdata->vif.bss_conf.use_short_preamble = false;
232 sdata->vif.bss_conf.use_short_slot = false;
233 return BSS_CHANGED_ERP_CTS_PROT |
234 BSS_CHANGED_ERP_PREAMBLE |
235 BSS_CHANGED_ERP_SLOT;
236 }
237
ieee80211_tasklet_handler(unsigned long data)238 static void ieee80211_tasklet_handler(unsigned long data)
239 {
240 struct ieee80211_local *local = (struct ieee80211_local *) data;
241 struct sk_buff *skb;
242
243 while ((skb = skb_dequeue(&local->skb_queue)) ||
244 (skb = skb_dequeue(&local->skb_queue_unreliable))) {
245 switch (skb->pkt_type) {
246 case IEEE80211_RX_MSG:
247 /* Clear skb->pkt_type in order to not confuse kernel
248 * netstack. */
249 skb->pkt_type = 0;
250 ieee80211_rx(&local->hw, skb);
251 break;
252 case IEEE80211_TX_STATUS_MSG:
253 skb->pkt_type = 0;
254 mac80211_tx_status(&local->hw, skb);
255 break;
256 default:
257 WARN(1, "mac80211: Packet is of unknown type %d\n",
258 skb->pkt_type);
259 dev_kfree_skb(skb);
260 break;
261 }
262 }
263 }
264
ieee80211_restart_work(struct work_struct * work)265 static void ieee80211_restart_work(struct work_struct *work)
266 {
267 struct ieee80211_local *local =
268 container_of(work, struct ieee80211_local, restart_work);
269 struct ieee80211_sub_if_data *sdata;
270
271 /* wait for scan work complete */
272 flush_workqueue(local->workqueue);
273 flush_work(&local->sched_scan_stopped_work);
274
275 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning),
276 "%s called with hardware scan in progress\n", __func__);
277
278 flush_work(&local->radar_detected_work);
279 rtnl_lock();
280 list_for_each_entry(sdata, &local->interfaces, list) {
281 /*
282 * XXX: there may be more work for other vif types and even
283 * for station mode: a good thing would be to run most of
284 * the iface type's dependent _stop (ieee80211_mg_stop,
285 * ieee80211_ibss_stop) etc...
286 * For now, fix only the specific bug that was seen: race
287 * between csa_connection_drop_work and us.
288 */
289 if (sdata->vif.type == NL80211_IFTYPE_STATION) {
290 /*
291 * This worker is scheduled from the iface worker that
292 * runs on mac80211's workqueue, so we can't be
293 * scheduling this worker after the cancel right here.
294 * The exception is ieee80211_chswitch_done.
295 * Then we can have a race...
296 */
297 cancel_work_sync(&sdata->u.mgd.csa_connection_drop_work);
298 }
299 flush_delayed_work(&sdata->dec_tailroom_needed_wk);
300 }
301 ieee80211_scan_cancel(local);
302
303 /* make sure any new ROC will consider local->in_reconfig */
304 flush_delayed_work(&local->roc_work);
305 flush_work(&local->hw_roc_done);
306
307 /* wait for all packet processing to be done */
308 synchronize_net();
309
310 ieee80211_reconfig(local);
311 rtnl_unlock();
312 }
313
mac80211_restart_hw(struct ieee80211_hw * hw)314 void mac80211_restart_hw(struct ieee80211_hw *hw)
315 {
316 struct ieee80211_local *local = hw_to_local(hw);
317
318 trace_api_restart_hw(local);
319
320 wiphy_info(hw->wiphy,
321 "Hardware restart was requested\n");
322
323 /* use this reason, ieee80211_reconfig will unblock it */
324 ieee80211_stop_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
325 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
326 false);
327
328 /*
329 * Stop all Rx during the reconfig. We don't want state changes
330 * or driver callbacks while this is in progress.
331 */
332 local->in_reconfig = true;
333 barrier();
334
335 queue_work(system_freezable_wq, &local->restart_work);
336 }
337
mac80211_ifdev_move(struct ieee80211_hw * hw,struct device * new_parent,int dpm_order)338 int mac80211_ifdev_move(struct ieee80211_hw *hw,
339 struct device *new_parent, int dpm_order)
340 {
341 struct ieee80211_local *local = hw_to_local(hw);
342 struct ieee80211_sub_if_data *sdata;
343 int ret;
344
345 list_for_each_entry(sdata, &local->interfaces, list) {
346 if (sdata->vif.type == NL80211_IFTYPE_P2P_DEVICE)
347 continue;
348 ret = device_move(&sdata->dev->dev, new_parent, dpm_order);
349 if (ret < 0)
350 return ret;
351 }
352 return 0;
353 }
354
355
356 #ifdef CONFIG_INET
ieee80211_ifa_changed(struct notifier_block * nb,unsigned long data,void * arg)357 static int ieee80211_ifa_changed(struct notifier_block *nb,
358 unsigned long data, void *arg)
359 {
360 struct in_ifaddr *ifa = arg;
361 struct ieee80211_local *local =
362 container_of(nb, struct ieee80211_local,
363 ifa_notifier);
364 struct net_device *ndev = ifa->ifa_dev->dev;
365 struct wireless_dev *wdev = ndev->ieee80211_ptr;
366 struct in_device *idev;
367 struct ieee80211_sub_if_data *sdata;
368 struct ieee80211_bss_conf *bss_conf;
369 struct ieee80211_if_managed *ifmgd;
370 int c = 0;
371
372 /* Make sure it's our interface that got changed */
373 if (!wdev)
374 return NOTIFY_DONE;
375
376 if (wdev->wiphy != local->hw.wiphy)
377 return NOTIFY_DONE;
378
379 sdata = IEEE80211_DEV_TO_SUB_IF(ndev);
380 bss_conf = &sdata->vif.bss_conf;
381
382 /* ARP filtering is only supported in managed mode */
383 if (sdata->vif.type != NL80211_IFTYPE_STATION)
384 return NOTIFY_DONE;
385
386 idev = __in_dev_get_rtnl(sdata->dev);
387 if (!idev)
388 return NOTIFY_DONE;
389
390 ifmgd = &sdata->u.mgd;
391 sdata_lock(sdata);
392
393 /* Copy the addresses to the bss_conf list */
394 ifa = rtnl_dereference(idev->ifa_list);
395 while (ifa) {
396 if (c < IEEE80211_BSS_ARP_ADDR_LIST_LEN)
397 bss_conf->arp_addr_list[c] = ifa->ifa_address;
398 ifa = rtnl_dereference(ifa->ifa_next);
399 c++;
400 }
401
402 bss_conf->arp_addr_cnt = c;
403
404 /* Configure driver only if associated (which also implies it is up) */
405 if (ifmgd->associated)
406 ieee80211_bss_info_change_notify(sdata,
407 BSS_CHANGED_ARP_FILTER);
408
409 sdata_unlock(sdata);
410
411 return NOTIFY_OK;
412 }
413 #endif
414
415 #if IPV6_FILTERING//IS_ENABLED(CONFIG_IPV6)
ieee80211_ifa6_changed_work(struct work_struct * work)416 static void ieee80211_ifa6_changed_work(struct work_struct *work)
417 {
418 struct ieee80211_local *local =
419 container_of(work, struct ieee80211_local, ifa6_changed_work);
420 struct ieee80211_sub_if_data *sdata = local->ifa6_sdata;
421 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
422 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
423
424 if (ifmgd->associated) {
425 bss_conf->ndp_filter_enabled = sdata->ndp_filter_state;
426 ieee80211_bss_info_change_notify(sdata,
427 BSS_CHANGED_NDP_FILTER);
428 }
429 }
430
ieee80211_ifa6_changed(struct notifier_block * nb,unsigned long data,void * arg)431 static int ieee80211_ifa6_changed(struct notifier_block *nb,
432 unsigned long data, void *arg)
433 {
434 struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)arg;
435 struct inet6_dev *idev = ifa->idev;
436 struct net_device *ndev = ifa->idev->dev;
437 struct ieee80211_local *local =
438 container_of(nb, struct ieee80211_local, ifa6_notifier);
439 struct wireless_dev *wdev = ndev->ieee80211_ptr;
440 struct ieee80211_sub_if_data *sdata;
441 struct ieee80211_bss_conf *bss_conf;
442 int c = 0;
443
444 /* Make sure it's our interface that got changed */
445 if (!wdev || wdev->wiphy != local->hw.wiphy)
446 return NOTIFY_DONE;
447
448 sdata = IEEE80211_DEV_TO_SUB_IF(ndev);
449 bss_conf = &sdata->vif.bss_conf;
450
451 /* NDP filtering is only supported in managed mode */
452 switch (sdata->vif.type) {
453 case NL80211_IFTYPE_STATION:
454 case NL80211_IFTYPE_AP:
455 case NL80211_IFTYPE_P2P_GO:
456 break;
457 default:
458 return NOTIFY_DONE;
459 }
460
461 #if 0
462 /*
463 * For now only support station mode. This is mostly because
464 * doing AP would have to handle AP_VLAN in some way ...
465 */
466 if (sdata->vif.type != NL80211_IFTYPE_STATION)
467 return NOTIFY_DONE;
468 #endif
469
470 list_for_each_entry(ifa, &idev->addr_list, if_list) {
471 c++;
472 if (c > IEEE80211_BSS_NDP_ADDR_LIST_LEN)
473 break;
474 memcpy(&bss_conf->ndp_addr_list[c-1],
475 &ifa->addr, sizeof(struct in6_addr));
476 }
477 if (c > IEEE80211_BSS_NDP_ADDR_LIST_LEN) {
478 sdata->ndp_filter_state = false;
479 c = 0;
480 } else {
481 sdata->ndp_filter_state = true;
482 }
483 bss_conf->ndp_addr_cnt = c;
484
485 if (sdata->vif.type == NL80211_IFTYPE_STATION) {
486 local->ifa6_sdata = sdata;
487 /*drv_ipv6_addr_change(local, sdata, idev);*/
488 schedule_work(&local->ifa6_changed_work);
489 } else {
490 bss_conf->ndp_filter_enabled = sdata->ndp_filter_state;
491 }
492 return NOTIFY_OK;
493 }
494 #endif/*IPV6_FILTERING*/
495
496 /* There isn't a lot of sense in it, but you can transmit anything you like */
497 static const struct ieee80211_txrx_stypes
498 ieee80211_default_mgmt_stypes[NUM_NL80211_IFTYPES] = {
499 [NL80211_IFTYPE_ADHOC] = {
500 .tx = 0xffff,
501 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
502 BIT(IEEE80211_STYPE_AUTH >> 4) |
503 BIT(IEEE80211_STYPE_DEAUTH >> 4) |
504 BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
505 },
506 [NL80211_IFTYPE_STATION] = {
507 .tx = 0xffff,
508 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
509 BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
510 },
511 [NL80211_IFTYPE_AP] = {
512 .tx = 0xffff,
513 .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) |
514 BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) |
515 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) |
516 BIT(IEEE80211_STYPE_DISASSOC >> 4) |
517 BIT(IEEE80211_STYPE_AUTH >> 4) |
518 BIT(IEEE80211_STYPE_DEAUTH >> 4) |
519 BIT(IEEE80211_STYPE_ACTION >> 4),
520 },
521 [NL80211_IFTYPE_AP_VLAN] = {
522 /* copy AP */
523 .tx = 0xffff,
524 .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) |
525 BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) |
526 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) |
527 BIT(IEEE80211_STYPE_DISASSOC >> 4) |
528 BIT(IEEE80211_STYPE_AUTH >> 4) |
529 BIT(IEEE80211_STYPE_DEAUTH >> 4) |
530 BIT(IEEE80211_STYPE_ACTION >> 4),
531 },
532 [NL80211_IFTYPE_P2P_CLIENT] = {
533 .tx = 0xffff,
534 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
535 BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
536 },
537 [NL80211_IFTYPE_P2P_GO] = {
538 .tx = 0xffff,
539 .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) |
540 BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) |
541 BIT(IEEE80211_STYPE_PROBE_REQ >> 4) |
542 BIT(IEEE80211_STYPE_DISASSOC >> 4) |
543 BIT(IEEE80211_STYPE_AUTH >> 4) |
544 BIT(IEEE80211_STYPE_DEAUTH >> 4) |
545 BIT(IEEE80211_STYPE_ACTION >> 4),
546 },
547 [NL80211_IFTYPE_MESH_POINT] = {
548 .tx = 0xffff,
549 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
550 BIT(IEEE80211_STYPE_AUTH >> 4) |
551 BIT(IEEE80211_STYPE_DEAUTH >> 4),
552 },
553 [NL80211_IFTYPE_P2P_DEVICE] = {
554 .tx = 0xffff,
555 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
556 BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
557 },
558 };
559
560 static const struct ieee80211_ht_cap mac80211_ht_capa_mod_mask = {
561 .ampdu_params_info = IEEE80211_HT_AMPDU_PARM_FACTOR |
562 IEEE80211_HT_AMPDU_PARM_DENSITY,
563
564 .cap_info = cpu_to_le16(IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
565 IEEE80211_HT_CAP_MAX_AMSDU |
566 IEEE80211_HT_CAP_SGI_20 |
567 IEEE80211_HT_CAP_SGI_40 |
568 IEEE80211_HT_CAP_TX_STBC |
569 IEEE80211_HT_CAP_RX_STBC |
570 IEEE80211_HT_CAP_LDPC_CODING |
571 IEEE80211_HT_CAP_40MHZ_INTOLERANT),
572 .mcs = {
573 .rx_mask = { 0xff, 0xff, 0xff, 0xff, 0xff,
574 0xff, 0xff, 0xff, 0xff, 0xff, },
575 },
576 };
577
578 static const struct ieee80211_vht_cap mac80211_vht_capa_mod_mask = {
579 .vht_cap_info =
580 cpu_to_le32(IEEE80211_VHT_CAP_RXLDPC |
581 IEEE80211_VHT_CAP_SHORT_GI_80 |
582 IEEE80211_VHT_CAP_SHORT_GI_160 |
583 IEEE80211_VHT_CAP_RXSTBC_MASK |
584 IEEE80211_VHT_CAP_TXSTBC |
585 IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE |
586 IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE |
587 IEEE80211_VHT_CAP_TX_ANTENNA_PATTERN |
588 IEEE80211_VHT_CAP_RX_ANTENNA_PATTERN |
589 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK),
590 .supp_mcs = {
591 .rx_mcs_map = cpu_to_le16(~0),
592 .tx_mcs_map = cpu_to_le16(~0),
593 },
594 };
595
596 #ifdef CONFIG_DRIVERS_HDF_XR829
597 static const struct ieee80211_regdomain xr829_regdom = {
598 .n_reg_rules = 4,
599 .alpha2 = "99",
600 .reg_rules = {
601 /* IEEE 802.11b/g, channels 1..11 */
602 REG_RULE(2412-10, 2472+10, 40, 6, 20, 0),
603 /* If any */
604 /* IEEE 802.11 channel 14 - Only JP enables
605 * this and for 802.11b only
606 */
607 REG_RULE(2484-10, 2484+10, 20, 6, 20, 0),
608 /* IEEE 802.11a, channel 36..64 */
609 REG_RULE(5150-10, 5350+10, 40, 6, 20, 0),
610 /* IEEE 802.11a, channel 100..165 */
611 REG_RULE(5470-10, 5850+10, 40, 6, 20, 0), }
612 };
613 #endif
614
mac80211_alloc_hw_nm(size_t priv_data_len,const struct ieee80211_ops * ops,const char * requested_name)615 struct ieee80211_hw *mac80211_alloc_hw_nm(size_t priv_data_len,
616 const struct ieee80211_ops *ops,
617 const char *requested_name)
618 {
619 struct ieee80211_local *local;
620 int priv_size, i;
621 struct wiphy *wiphy;
622 bool use_chanctx;
623
624 if (WARN_ON(!ops->tx || !ops->start || !ops->stop || !ops->config ||
625 !ops->add_interface || !ops->remove_interface ||
626 !ops->configure_filter))
627 return NULL;
628
629 if (WARN_ON(ops->sta_state && (ops->sta_add || ops->sta_remove)))
630 return NULL;
631
632 /* check all or no channel context operations exist */
633 i = !!ops->add_chanctx + !!ops->remove_chanctx +
634 !!ops->change_chanctx + !!ops->assign_vif_chanctx +
635 !!ops->unassign_vif_chanctx;
636 if (WARN_ON(i != 0 && i != 5))
637 return NULL;
638 use_chanctx = i == 5;
639
640 /* Ensure 32-byte alignment of our private data and hw private data.
641 * We use the wiphy priv data for both our ieee80211_local and for
642 * the driver's private data
643 *
644 * In memory it'll be like this:
645 *
646 * +-------------------------+
647 * | struct wiphy |
648 * +-------------------------+
649 * | struct ieee80211_local |
650 * +-------------------------+
651 * | driver's private data |
652 * +-------------------------+
653 *
654 */
655 priv_size = ALIGN(sizeof(*local), NETDEV_ALIGN) + priv_data_len;
656
657 #ifdef CONFIG_DRIVERS_HDF_XR829
658 wiphy = wiphy_new_nm(&xrmac_config_ops, priv_size, requested_name);
659 #else
660 wiphy = wiphy_new_nm(&mac80211_config_ops, priv_size, requested_name);
661 #endif
662
663 if (!wiphy)
664 return NULL;
665
666 wiphy->mgmt_stypes = ieee80211_default_mgmt_stypes;
667
668 wiphy->privid = mac80211_wiphy_privid;
669
670 wiphy->flags |= WIPHY_FLAG_NETNS_OK |
671 WIPHY_FLAG_4ADDR_AP |
672 WIPHY_FLAG_4ADDR_STATION |
673 WIPHY_FLAG_REPORTS_OBSS |
674 WIPHY_FLAG_OFFCHAN_TX;
675
676 if (ops->remain_on_channel)
677 wiphy->flags |= WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL;
678
679 wiphy->features |= NL80211_FEATURE_SK_TX_STATUS |
680 NL80211_FEATURE_SAE |
681 NL80211_FEATURE_HT_IBSS |
682 NL80211_FEATURE_VIF_TXPOWER |
683 NL80211_FEATURE_MAC_ON_CREATE |
684 NL80211_FEATURE_USERSPACE_MPM |
685 NL80211_FEATURE_FULL_AP_CLIENT_STATE;
686 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_FILS_STA);
687 wiphy_ext_feature_set(wiphy,
688 NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211);
689
690 if (!ops->hw_scan) {
691 wiphy->features |= NL80211_FEATURE_LOW_PRIORITY_SCAN |
692 NL80211_FEATURE_AP_SCAN;
693 /*
694 * if the driver behaves correctly using the probe request
695 * (template) from mac80211, then both of these should be
696 * supported even with hw scan - but let drivers opt in.
697 */
698 wiphy_ext_feature_set(wiphy,
699 NL80211_EXT_FEATURE_SCAN_RANDOM_SN);
700 wiphy_ext_feature_set(wiphy,
701 NL80211_EXT_FEATURE_SCAN_MIN_PREQ_CONTENT);
702 }
703
704 if (!ops->set_key)
705 wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
706
707 if (ops->wake_tx_queue)
708 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_TXQS);
709
710 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_RRM);
711
712 wiphy->bss_priv_size = sizeof(struct ieee80211_bss);
713
714 local = wiphy_priv(wiphy);
715
716 if (sta_info_init(local))
717 goto err_free;
718
719 local->hw.wiphy = wiphy;
720
721 #ifdef CONFIG_DRIVERS_HDF_XR829
722 hdf_wiphy_register(wiphy);
723 #endif
724
725 local->hw.priv = (char *)local + ALIGN(sizeof(*local), NETDEV_ALIGN);
726
727 local->ops = ops;
728 local->use_chanctx = use_chanctx;
729
730 /*
731 * We need a bit of data queued to build aggregates properly, so
732 * instruct the TCP stack to allow more than a single ms of data
733 * to be queued in the stack. The value is a bit-shift of 1
734 * second, so 7 is ~8ms of queued data. Only affects local TCP
735 * sockets.
736 * This is the default, anyhow - drivers may need to override it
737 * for local reasons (longer buffers, longer completion time, or
738 * similar).
739 */
740 local->hw.tx_sk_pacing_shift = 7;
741
742 /* set up some defaults */
743 local->hw.queues = 1;
744 local->hw.max_rates = 1;
745 local->hw.max_report_rates = 0;
746 local->hw.max_rx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF_HT;
747 local->hw.max_tx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF_HT;
748 local->hw.offchannel_tx_hw_queue = IEEE80211_INVAL_HW_QUEUE;
749 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
750 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
751 local->hw.radiotap_mcs_details = IEEE80211_RADIOTAP_MCS_HAVE_MCS |
752 IEEE80211_RADIOTAP_MCS_HAVE_GI |
753 IEEE80211_RADIOTAP_MCS_HAVE_BW;
754 local->hw.radiotap_vht_details = IEEE80211_RADIOTAP_VHT_KNOWN_GI |
755 IEEE80211_RADIOTAP_VHT_KNOWN_BANDWIDTH;
756 local->hw.uapsd_queues = IEEE80211_DEFAULT_UAPSD_QUEUES;
757 local->hw.uapsd_max_sp_len = IEEE80211_DEFAULT_MAX_SP_LEN;
758 local->hw.max_mtu = IEEE80211_MAX_DATA_LEN;
759 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
760 wiphy->ht_capa_mod_mask = &mac80211_ht_capa_mod_mask;
761 wiphy->vht_capa_mod_mask = &mac80211_vht_capa_mod_mask;
762
763 local->ext_capa[7] = WLAN_EXT_CAPA8_OPMODE_NOTIF;
764
765 wiphy->extended_capabilities = local->ext_capa;
766 wiphy->extended_capabilities_mask = local->ext_capa;
767 wiphy->extended_capabilities_len =
768 ARRAY_SIZE(local->ext_capa);
769
770 INIT_LIST_HEAD(&local->interfaces);
771 INIT_LIST_HEAD(&local->mon_list);
772
773 __hw_addr_init(&local->mc_list);
774
775 mutex_init(&local->iflist_mtx);
776 mutex_init(&local->mtx);
777
778 mutex_init(&local->key_mtx);
779 spin_lock_init(&local->filter_lock);
780 spin_lock_init(&local->rx_path_lock);
781 spin_lock_init(&local->queue_stop_reason_lock);
782
783 for (i = 0; i < IEEE80211_NUM_ACS; i++) {
784 INIT_LIST_HEAD(&local->active_txqs[i]);
785 spin_lock_init(&local->active_txq_lock[i]);
786 }
787 local->airtime_flags = AIRTIME_USE_TX | AIRTIME_USE_RX;
788
789 INIT_LIST_HEAD(&local->chanctx_list);
790 mutex_init(&local->chanctx_mtx);
791
792 INIT_DELAYED_WORK(&local->scan_work, ieee80211_scan_work);
793
794 INIT_WORK(&local->restart_work, ieee80211_restart_work);
795
796 #ifdef CONFIG_INET
797 #ifdef IPV6_FILTERING
798 INIT_WORK(&local->ifa6_changed_work, ieee80211_ifa6_changed_work);
799 #endif /*IPV6_FILTERING*/
800 #endif
801
802 INIT_WORK(&local->radar_detected_work,
803 ieee80211_dfs_radar_detected_work);
804
805 INIT_WORK(&local->reconfig_filter, ieee80211_reconfig_filter);
806 local->smps_mode = IEEE80211_SMPS_OFF;
807
808 INIT_WORK(&local->dynamic_ps_enable_work,
809 ieee80211_dynamic_ps_enable_work);
810 INIT_WORK(&local->dynamic_ps_disable_work,
811 ieee80211_dynamic_ps_disable_work);
812 timer_setup(&local->dynamic_ps_timer, ieee80211_dynamic_ps_timer, 0);
813
814 INIT_WORK(&local->sched_scan_stopped_work,
815 ieee80211_sched_scan_stopped_work);
816
817 INIT_WORK(&local->tdls_chsw_work, ieee80211_tdls_chsw_work);
818
819 spin_lock_init(&local->ack_status_lock);
820 idr_init(&local->ack_status_frames);
821
822 for (i = 0; i < IEEE80211_MAX_QUEUES; i++) {
823 skb_queue_head_init(&local->pending[i]);
824 atomic_set(&local->agg_queue_stop[i], 0);
825 }
826 tasklet_init(&local->tx_pending_tasklet, ieee80211_tx_pending,
827 (unsigned long)local);
828
829 if (ops->wake_tx_queue)
830 tasklet_init(&local->wake_txqs_tasklet, ieee80211_wake_txqs,
831 (unsigned long)local);
832
833 tasklet_init(&local->tasklet,
834 ieee80211_tasklet_handler,
835 (unsigned long) local);
836
837 skb_queue_head_init(&local->skb_queue);
838 skb_queue_head_init(&local->skb_queue_unreliable);
839 skb_queue_head_init(&local->skb_queue_tdls_chsw);
840
841 ieee80211_alloc_led_names(local);
842
843 ieee80211_roc_setup(local);
844
845 local->hw.radiotap_timestamp.units_pos = -1;
846 local->hw.radiotap_timestamp.accuracy = -1;
847
848 return &local->hw;
849 err_free:
850 wiphy_free(wiphy);
851 return NULL;
852 }
853
854
ieee80211_init_cipher_suites(struct ieee80211_local * local)855 static int ieee80211_init_cipher_suites(struct ieee80211_local *local)
856 {
857 bool have_wep = !fips_enabled; /* FIPS does not permit the use of RC4 */
858 bool have_mfp = ieee80211_hw_check(&local->hw, MFP_CAPABLE);
859 int n_suites = 0, r = 0, w = 0;
860 u32 *suites;
861 static const u32 cipher_suites[] = {
862 /* keep WEP first, it may be removed below */
863 WLAN_CIPHER_SUITE_WEP40,
864 WLAN_CIPHER_SUITE_WEP104,
865 WLAN_CIPHER_SUITE_TKIP,
866 WLAN_CIPHER_SUITE_CCMP,
867 WLAN_CIPHER_SUITE_CCMP_256,
868 WLAN_CIPHER_SUITE_GCMP,
869 WLAN_CIPHER_SUITE_GCMP_256,
870
871 /* keep last -- depends on hw flags! */
872 WLAN_CIPHER_SUITE_AES_CMAC,
873 WLAN_CIPHER_SUITE_BIP_CMAC_256,
874 WLAN_CIPHER_SUITE_BIP_GMAC_128,
875 WLAN_CIPHER_SUITE_BIP_GMAC_256,
876 };
877
878 if (ieee80211_hw_check(&local->hw, SW_CRYPTO_CONTROL) ||
879 local->hw.wiphy->cipher_suites) {
880 /* If the driver advertises, or doesn't support SW crypto,
881 * we only need to remove WEP if necessary.
882 */
883 if (have_wep)
884 return 0;
885
886 /* well if it has _no_ ciphers ... fine */
887 if (!local->hw.wiphy->n_cipher_suites)
888 return 0;
889
890 /* Driver provides cipher suites, but we need to exclude WEP */
891 suites = kmemdup(local->hw.wiphy->cipher_suites,
892 sizeof(u32) * local->hw.wiphy->n_cipher_suites,
893 GFP_KERNEL);
894 if (!suites)
895 return -ENOMEM;
896
897 for (r = 0; r < local->hw.wiphy->n_cipher_suites; r++) {
898 u32 suite = local->hw.wiphy->cipher_suites[r];
899
900 if (suite == WLAN_CIPHER_SUITE_WEP40 ||
901 suite == WLAN_CIPHER_SUITE_WEP104)
902 continue;
903 suites[w++] = suite;
904 }
905 } else if (!local->hw.cipher_schemes) {
906 /* If the driver doesn't have cipher schemes, there's nothing
907 * else to do other than assign the (software supported and
908 * perhaps offloaded) cipher suites.
909 */
910 local->hw.wiphy->cipher_suites = cipher_suites;
911 local->hw.wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
912
913 if (!have_mfp)
914 local->hw.wiphy->n_cipher_suites -= 4;
915
916 if (!have_wep) {
917 local->hw.wiphy->cipher_suites += 2;
918 local->hw.wiphy->n_cipher_suites -= 2;
919 }
920
921 /* not dynamically allocated, so just return */
922 return 0;
923 } else {
924 const struct ieee80211_cipher_scheme *cs;
925
926 cs = local->hw.cipher_schemes;
927
928 /* Driver specifies cipher schemes only (but not cipher suites
929 * including the schemes)
930 *
931 * We start counting ciphers defined by schemes, TKIP, CCMP,
932 * CCMP-256, GCMP, and GCMP-256
933 */
934 n_suites = local->hw.n_cipher_schemes + 5;
935
936 /* check if we have WEP40 and WEP104 */
937 if (have_wep)
938 n_suites += 2;
939
940 /* check if we have AES_CMAC, BIP-CMAC-256, BIP-GMAC-128,
941 * BIP-GMAC-256
942 */
943 if (have_mfp)
944 n_suites += 4;
945
946 suites = kmalloc_array(n_suites, sizeof(u32), GFP_KERNEL);
947 if (!suites)
948 return -ENOMEM;
949
950 suites[w++] = WLAN_CIPHER_SUITE_CCMP;
951 suites[w++] = WLAN_CIPHER_SUITE_CCMP_256;
952 suites[w++] = WLAN_CIPHER_SUITE_TKIP;
953 suites[w++] = WLAN_CIPHER_SUITE_GCMP;
954 suites[w++] = WLAN_CIPHER_SUITE_GCMP_256;
955
956 if (have_wep) {
957 suites[w++] = WLAN_CIPHER_SUITE_WEP40;
958 suites[w++] = WLAN_CIPHER_SUITE_WEP104;
959 }
960
961 if (have_mfp) {
962 suites[w++] = WLAN_CIPHER_SUITE_AES_CMAC;
963 suites[w++] = WLAN_CIPHER_SUITE_BIP_CMAC_256;
964 suites[w++] = WLAN_CIPHER_SUITE_BIP_GMAC_128;
965 suites[w++] = WLAN_CIPHER_SUITE_BIP_GMAC_256;
966 }
967
968 for (r = 0; r < local->hw.n_cipher_schemes; r++) {
969 suites[w++] = cs[r].cipher;
970 if (WARN_ON(cs[r].pn_len > IEEE80211_MAX_PN_LEN)) {
971 kfree(suites);
972 return -EINVAL;
973 }
974 }
975 }
976
977 local->hw.wiphy->cipher_suites = suites;
978 local->hw.wiphy->n_cipher_suites = w;
979 local->wiphy_ciphers_allocated = true;
980
981 return 0;
982 }
983
mac80211_register_hw(struct ieee80211_hw * hw)984 int mac80211_register_hw(struct ieee80211_hw *hw)
985 {
986 struct ieee80211_local *local = hw_to_local(hw);
987 int result, i;
988 enum nl80211_band band;
989 int channels, max_bitrates;
990 bool supp_ht, supp_vht, supp_he;
991 netdev_features_t feature_whitelist;
992 struct cfg80211_chan_def dflt_chandef = {};
993
994 if (ieee80211_hw_check(hw, QUEUE_CONTROL) &&
995 (local->hw.offchannel_tx_hw_queue == IEEE80211_INVAL_HW_QUEUE ||
996 local->hw.offchannel_tx_hw_queue >= local->hw.queues))
997 return -EINVAL;
998
999 if ((hw->wiphy->features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH) &&
1000 (!local->ops->tdls_channel_switch ||
1001 !local->ops->tdls_cancel_channel_switch ||
1002 !local->ops->tdls_recv_channel_switch))
1003 return -EOPNOTSUPP;
1004
1005 if (WARN_ON(ieee80211_hw_check(hw, SUPPORTS_TX_FRAG) &&
1006 !local->ops->set_frag_threshold))
1007 return -EINVAL;
1008
1009 if (WARN_ON(local->hw.wiphy->interface_modes &
1010 BIT(NL80211_IFTYPE_NAN) &&
1011 (!local->ops->start_nan || !local->ops->stop_nan)))
1012 return -EINVAL;
1013
1014 #ifdef CONFIG_PM
1015 if (hw->wiphy->wowlan && (!local->ops->suspend || !local->ops->resume))
1016 return -EINVAL;
1017 #endif
1018
1019 if (!local->use_chanctx) {
1020 for (i = 0; i < local->hw.wiphy->n_iface_combinations; i++) {
1021 const struct ieee80211_iface_combination *comb;
1022
1023 comb = &local->hw.wiphy->iface_combinations[i];
1024
1025 if (comb->num_different_channels > 1)
1026 return -EINVAL;
1027 }
1028 } else {
1029 /*
1030 * WDS is currently prohibited when channel contexts are used
1031 * because there's no clear definition of which channel WDS
1032 * type interfaces use
1033 */
1034 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_WDS))
1035 return -EINVAL;
1036
1037 /* DFS is not supported with multi-channel combinations yet */
1038 for (i = 0; i < local->hw.wiphy->n_iface_combinations; i++) {
1039 const struct ieee80211_iface_combination *comb;
1040
1041 comb = &local->hw.wiphy->iface_combinations[i];
1042
1043 if (comb->radar_detect_widths &&
1044 comb->num_different_channels > 1)
1045 return -EINVAL;
1046 }
1047 }
1048
1049 /* Only HW csum features are currently compatible with mac80211 */
1050 feature_whitelist = NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
1051 NETIF_F_HW_CSUM | NETIF_F_SG | NETIF_F_HIGHDMA |
1052 NETIF_F_GSO_SOFTWARE | NETIF_F_RXCSUM;
1053 if (WARN_ON(hw->netdev_features & ~feature_whitelist))
1054 return -EINVAL;
1055
1056 if (hw->max_report_rates == 0)
1057 hw->max_report_rates = hw->max_rates;
1058
1059 local->rx_chains = 1;
1060
1061 /*
1062 * generic code guarantees at least one band,
1063 * set this very early because much code assumes
1064 * that hw.conf.channel is assigned
1065 */
1066 channels = 0;
1067 max_bitrates = 0;
1068 supp_ht = false;
1069 supp_vht = false;
1070 supp_he = false;
1071 for (band = 0; band < NUM_NL80211_BANDS; band++) {
1072 struct ieee80211_supported_band *sband;
1073
1074 sband = local->hw.wiphy->bands[band];
1075 if (!sband)
1076 continue;
1077
1078 if (!dflt_chandef.chan) {
1079 cfg80211_chandef_create(&dflt_chandef,
1080 &sband->channels[0],
1081 NL80211_CHAN_NO_HT);
1082 /* init channel we're on */
1083 if (!local->use_chanctx && !local->_oper_chandef.chan) {
1084 local->hw.conf.chandef = dflt_chandef;
1085 local->_oper_chandef = dflt_chandef;
1086 }
1087 local->monitor_chandef = dflt_chandef;
1088 }
1089
1090 channels += sband->n_channels;
1091
1092 if (max_bitrates < sband->n_bitrates)
1093 max_bitrates = sband->n_bitrates;
1094 supp_ht = supp_ht || sband->ht_cap.ht_supported;
1095 supp_vht = supp_vht || sband->vht_cap.vht_supported;
1096
1097 if (!supp_he)
1098 supp_he = !!ieee80211_get_he_sta_cap(sband);
1099
1100 if (!sband->ht_cap.ht_supported)
1101 continue;
1102
1103 /* TODO: consider VHT for RX chains, hopefully it's the same */
1104 local->rx_chains =
1105 max(ieee80211_mcs_to_chains(&sband->ht_cap.mcs),
1106 local->rx_chains);
1107
1108 /* no need to mask, SM_PS_DISABLED has all bits set */
1109 sband->ht_cap.cap |= WLAN_HT_CAP_SM_PS_DISABLED <<
1110 IEEE80211_HT_CAP_SM_PS_SHIFT;
1111 }
1112
1113 /* if low-level driver supports AP, we also support VLAN.
1114 * drivers advertising SW_CRYPTO_CONTROL should enable AP_VLAN
1115 * based on their support to transmit SW encrypted packets.
1116 */
1117 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_AP) &&
1118 !ieee80211_hw_check(&local->hw, SW_CRYPTO_CONTROL)) {
1119 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP_VLAN);
1120 hw->wiphy->software_iftypes |= BIT(NL80211_IFTYPE_AP_VLAN);
1121 }
1122
1123 /* mac80211 always supports monitor */
1124 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR);
1125 hw->wiphy->software_iftypes |= BIT(NL80211_IFTYPE_MONITOR);
1126
1127 /* mac80211 doesn't support more than one IBSS interface right now */
1128 for (i = 0; i < hw->wiphy->n_iface_combinations; i++) {
1129 const struct ieee80211_iface_combination *c;
1130 int j;
1131
1132 c = &hw->wiphy->iface_combinations[i];
1133
1134 for (j = 0; j < c->n_limits; j++)
1135 if ((c->limits[j].types & BIT(NL80211_IFTYPE_ADHOC)) &&
1136 c->limits[j].max > 1)
1137 return -EINVAL;
1138 }
1139
1140 local->int_scan_req = kzalloc(sizeof(*local->int_scan_req) +
1141 sizeof(void *) * channels, GFP_KERNEL);
1142 if (!local->int_scan_req)
1143 return -ENOMEM;
1144
1145 for (band = 0; band < NUM_NL80211_BANDS; band++) {
1146 if (!local->hw.wiphy->bands[band])
1147 continue;
1148 local->int_scan_req->rates[band] = (u32) -1;
1149 }
1150
1151 #ifndef CONFIG_MAC80211_MESH
1152 /* mesh depends on Kconfig, but drivers should set it if they want */
1153 local->hw.wiphy->interface_modes &= ~BIT(NL80211_IFTYPE_MESH_POINT);
1154 #endif
1155
1156 /* if the underlying driver supports mesh, mac80211 will (at least)
1157 * provide routing of mesh authentication frames to userspace */
1158 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_MESH_POINT))
1159 local->hw.wiphy->flags |= WIPHY_FLAG_MESH_AUTH;
1160
1161 /* mac80211 supports control port protocol changing */
1162 local->hw.wiphy->flags |= WIPHY_FLAG_CONTROL_PORT_PROTOCOL;
1163
1164 if (ieee80211_hw_check(&local->hw, SIGNAL_DBM)) {
1165 printk("mac80211_register_hw signal_type CFG80211_SIGNAL_TYPE_MBM");
1166 local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
1167 } else if (ieee80211_hw_check(&local->hw, SIGNAL_UNSPEC)) {
1168 local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC;
1169 printk("mac80211_register_hw signal_type CFG80211_SIGNAL_TYPE_UNSPEC");
1170 if (hw->max_signal <= 0) {
1171 result = -EINVAL;
1172 goto fail_workqueue;
1173 }
1174 }
1175
1176 /* Mac80211 and therefore all drivers using SW crypto only
1177 * are able to handle PTK rekeys and Extended Key ID.
1178 */
1179 if (!local->ops->set_key) {
1180 wiphy_ext_feature_set(local->hw.wiphy,
1181 NL80211_EXT_FEATURE_CAN_REPLACE_PTK0);
1182 wiphy_ext_feature_set(local->hw.wiphy,
1183 NL80211_EXT_FEATURE_EXT_KEY_ID);
1184 }
1185
1186 /*
1187 * Calculate scan IE length -- we need this to alloc
1188 * memory and to subtract from the driver limit. It
1189 * includes the DS Params, (extended) supported rates, and HT
1190 * information -- SSID is the driver's responsibility.
1191 */
1192 local->scan_ies_len = 4 + max_bitrates /* (ext) supp rates */ +
1193 3 /* DS Params */;
1194 if (supp_ht)
1195 local->scan_ies_len += 2 + sizeof(struct ieee80211_ht_cap);
1196
1197 if (supp_vht)
1198 local->scan_ies_len +=
1199 2 + sizeof(struct ieee80211_vht_cap);
1200
1201 /* HE cap element is variable in size - set len to allow max size */
1202 /*
1203 * TODO: 1 is added at the end of the calculation to accommodate for
1204 * the temporary placing of the HE capabilities IE under EXT.
1205 * Remove it once it is placed in the final place.
1206 */
1207 if (supp_he)
1208 local->scan_ies_len +=
1209 2 + sizeof(struct ieee80211_he_cap_elem) +
1210 sizeof(struct ieee80211_he_mcs_nss_supp) +
1211 IEEE80211_HE_PPE_THRES_MAX_LEN + 1;
1212
1213 if (!local->ops->hw_scan) {
1214 /* For hw_scan, driver needs to set these up. */
1215 local->hw.wiphy->max_scan_ssids = 4;
1216 local->hw.wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
1217 }
1218
1219 /*
1220 * If the driver supports any scan IEs, then assume the
1221 * limit includes the IEs mac80211 will add, otherwise
1222 * leave it at zero and let the driver sort it out; we
1223 * still pass our IEs to the driver but userspace will
1224 * not be allowed to in that case.
1225 */
1226 if (local->hw.wiphy->max_scan_ie_len)
1227 local->hw.wiphy->max_scan_ie_len -= local->scan_ies_len;
1228
1229 WARN_ON(!ieee80211_cs_list_valid(local->hw.cipher_schemes,
1230 local->hw.n_cipher_schemes));
1231
1232 result = ieee80211_init_cipher_suites(local);
1233 if (result < 0)
1234 goto fail_workqueue;
1235
1236 if (!local->ops->remain_on_channel)
1237 local->hw.wiphy->max_remain_on_channel_duration = 5000;
1238
1239 /* mac80211 based drivers don't support internal TDLS setup */
1240 if (local->hw.wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS)
1241 local->hw.wiphy->flags |= WIPHY_FLAG_TDLS_EXTERNAL_SETUP;
1242
1243 /* mac80211 supports eCSA, if the driver supports STA CSA at all */
1244 if (ieee80211_hw_check(&local->hw, CHANCTX_STA_CSA))
1245 local->ext_capa[0] |= WLAN_EXT_CAPA1_EXT_CHANNEL_SWITCHING;
1246
1247 /* mac80211 supports multi BSSID, if the driver supports it */
1248 if (ieee80211_hw_check(&local->hw, SUPPORTS_MULTI_BSSID)) {
1249 local->hw.wiphy->support_mbssid = true;
1250 if (ieee80211_hw_check(&local->hw,
1251 SUPPORTS_ONLY_HE_MULTI_BSSID))
1252 local->hw.wiphy->support_only_he_mbssid = true;
1253 else
1254 local->ext_capa[2] |=
1255 WLAN_EXT_CAPA3_MULTI_BSSID_SUPPORT;
1256 }
1257
1258 local->hw.wiphy->max_num_csa_counters = IEEE80211_MAX_CSA_COUNTERS_NUM;
1259
1260 /*
1261 * We use the number of queues for feature tests (QoS, HT) internally
1262 * so restrict them appropriately.
1263 */
1264 if (hw->queues > IEEE80211_MAX_QUEUES)
1265 hw->queues = IEEE80211_MAX_QUEUES;
1266
1267 local->workqueue =
1268 alloc_ordered_workqueue("%s", 0, wiphy_name(local->hw.wiphy));
1269 if (!local->workqueue) {
1270 result = -ENOMEM;
1271 goto fail_workqueue;
1272 }
1273
1274 /*
1275 * The hardware needs headroom for sending the frame,
1276 * and we need some headroom for passing the frame to monitor
1277 * interfaces, but never both at the same time.
1278 */
1279 local->tx_headroom = max_t(unsigned int, local->hw.extra_tx_headroom,
1280 IEEE80211_TX_STATUS_HEADROOM);
1281
1282 /*
1283 * if the driver doesn't specify a max listen interval we
1284 * use 5 which should be a safe default
1285 */
1286 if (local->hw.max_listen_interval == 0)
1287 local->hw.max_listen_interval = 5;
1288
1289 local->hw.conf.listen_interval = local->hw.max_listen_interval;
1290
1291 local->dynamic_ps_forced_timeout = -1;
1292
1293 if (!local->hw.max_nan_de_entries)
1294 local->hw.max_nan_de_entries = IEEE80211_MAX_NAN_INSTANCE_ID;
1295
1296 if (!local->hw.weight_multiplier)
1297 local->hw.weight_multiplier = 1;
1298
1299 result = ieee80211_wep_init(local);
1300 if (result < 0)
1301 wiphy_debug(local->hw.wiphy, "Failed to initialize wep: %d\n",
1302 result);
1303
1304 local->hw.conf.flags = IEEE80211_CONF_IDLE;
1305
1306 ieee80211_led_init(local);
1307
1308 result = ieee80211_txq_setup_flows(local);
1309 if (result)
1310 goto fail_flows;
1311
1312 rtnl_lock();
1313 result = ieee80211_init_rate_ctrl_alg(local,
1314 hw->rate_control_algorithm);
1315 rtnl_unlock();
1316 if (result < 0) {
1317 wiphy_debug(local->hw.wiphy,
1318 "Failed to initialize rate control algorithm\n");
1319 goto fail_rate;
1320 }
1321
1322 if (local->rate_ctrl) {
1323 clear_bit(IEEE80211_HW_SUPPORTS_VHT_EXT_NSS_BW, hw->flags);
1324 if (local->rate_ctrl->ops->capa & RATE_CTRL_CAPA_VHT_EXT_NSS_BW)
1325 ieee80211_hw_set(hw, SUPPORTS_VHT_EXT_NSS_BW);
1326 }
1327
1328 /*
1329 * If the VHT capabilities don't have IEEE80211_VHT_EXT_NSS_BW_CAPABLE,
1330 * or have it when we don't, copy the sband structure and set/clear it.
1331 * This is necessary because rate scaling algorithms could be switched
1332 * and have different support values.
1333 * Print a message so that in the common case the reallocation can be
1334 * avoided.
1335 */
1336 BUILD_BUG_ON(NUM_NL80211_BANDS > 8 * sizeof(local->sband_allocated));
1337 for (band = 0; band < NUM_NL80211_BANDS; band++) {
1338 struct ieee80211_supported_band *sband;
1339 bool local_cap, ie_cap;
1340
1341 local_cap = ieee80211_hw_check(hw, SUPPORTS_VHT_EXT_NSS_BW);
1342
1343 sband = local->hw.wiphy->bands[band];
1344 if (!sband || !sband->vht_cap.vht_supported)
1345 continue;
1346
1347 ie_cap = !!(sband->vht_cap.vht_mcs.tx_highest &
1348 cpu_to_le16(IEEE80211_VHT_EXT_NSS_BW_CAPABLE));
1349
1350 if (local_cap == ie_cap)
1351 continue;
1352
1353 sband = kmemdup(sband, sizeof(*sband), GFP_KERNEL);
1354 if (!sband) {
1355 result = -ENOMEM;
1356 goto fail_rate;
1357 }
1358
1359 wiphy_dbg(hw->wiphy, "copying sband (band %d) due to VHT EXT NSS BW flag\n",
1360 band);
1361
1362 sband->vht_cap.vht_mcs.tx_highest ^=
1363 cpu_to_le16(IEEE80211_VHT_EXT_NSS_BW_CAPABLE);
1364
1365 local->hw.wiphy->bands[band] = sband;
1366 local->sband_allocated |= BIT(band);
1367 }
1368
1369 #ifdef CONFIG_DRIVERS_HDF_XR829
1370 local->hw.wiphy->regulatory_flags |= REGULATORY_IGNORE_STALE_KICKOFF | REGULATORY_CUSTOM_REG;
1371 wiphy_apply_custom_regulatory(local->hw.wiphy, &xr829_regdom);
1372 #endif
1373
1374 result = wiphy_register(local->hw.wiphy);
1375 if (result < 0)
1376 goto fail_wiphy_register;
1377
1378 debugfs_hw_add(local);
1379 rate_control_add_debugfs(local);
1380
1381 rtnl_lock();
1382
1383 /* add one default STA interface if supported */
1384 if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_STATION) &&
1385 !ieee80211_hw_check(hw, NO_AUTO_VIF)) {
1386 struct vif_params params = {0};
1387
1388 result = ieee80211_if_add(local, "wlan%d", NET_NAME_ENUM, NULL,
1389 NL80211_IFTYPE_STATION, ¶ms);
1390 if (result)
1391 wiphy_warn(local->hw.wiphy,
1392 "Failed to add default virtual iface\n");
1393
1394 /*
1395 result = ieee80211_if_add(local, "p2p%d", NET_NAME_ENUM, NULL,
1396 NL80211_IFTYPE_P2P_DEVICE, NULL);
1397
1398 if (result)
1399 wiphy_warn(local->hw.wiphy,
1400 "Failed to add default virtual p2p iface\n");*/
1401 }
1402
1403 rtnl_unlock();
1404
1405 #ifdef CONFIG_INET
1406 local->ifa_notifier.notifier_call = ieee80211_ifa_changed;
1407 result = register_inetaddr_notifier(&local->ifa_notifier);
1408 if (result)
1409 goto fail_ifa;
1410 #endif
1411
1412 #if IPV6_FILTERING//IS_ENABLED(CONFIG_IPV6)
1413 local->ifa6_notifier.notifier_call = ieee80211_ifa6_changed;
1414 result = register_inet6addr_notifier(&local->ifa6_notifier);
1415 if (result)
1416 goto fail_ifa6;
1417 #endif/*IPV6_FILTERING*/
1418
1419 return 0;
1420
1421 #if IPV6_FILTERING//IS_ENABLED(CONFIG_IPV6)
1422 fail_ifa6:
1423 #ifdef CONFIG_INET
1424 unregister_inetaddr_notifier(&local->ifa_notifier);
1425 #endif/*IPV6_FILTERING*/
1426 #endif
1427 #if defined(CONFIG_INET) || defined(CONFIG_IPV6)
1428 fail_ifa:
1429 #endif
1430 wiphy_unregister(local->hw.wiphy);
1431 fail_wiphy_register:
1432 rtnl_lock();
1433 rate_control_deinitialize(local);
1434 ieee80211_remove_interfaces(local);
1435 rtnl_unlock();
1436 fail_rate:
1437 fail_flows:
1438 ieee80211_led_exit(local);
1439 destroy_workqueue(local->workqueue);
1440 fail_workqueue:
1441 if (local->wiphy_ciphers_allocated)
1442 kfree(local->hw.wiphy->cipher_suites);
1443 kfree(local->int_scan_req);
1444 return result;
1445 }
1446
mac80211_unregister_hw(struct ieee80211_hw * hw)1447 void mac80211_unregister_hw(struct ieee80211_hw *hw)
1448 {
1449 struct ieee80211_local *local = hw_to_local(hw);
1450
1451 tasklet_kill(&local->tx_pending_tasklet);
1452 tasklet_kill(&local->tasklet);
1453
1454 #ifdef CONFIG_INET
1455 unregister_inetaddr_notifier(&local->ifa_notifier);
1456 #endif
1457 #if IPV6_FILTERING//IS_ENABLED(CONFIG_IPV6)
1458 unregister_inet6addr_notifier(&local->ifa6_notifier);
1459 #endif/*IPV6_FILTERING*/
1460
1461 rtnl_lock();
1462
1463 /*
1464 * At this point, interface list manipulations are fine
1465 * because the driver cannot be handing us frames any
1466 * more and the tasklet is killed.
1467 */
1468 ieee80211_remove_interfaces(local);
1469
1470 rtnl_unlock();
1471
1472 cancel_delayed_work_sync(&local->roc_work);
1473 cancel_work_sync(&local->restart_work);
1474 #ifdef IPV6_FILTERING
1475 #ifdef CONFIG_INET
1476 cancel_work_sync(&local->ifa6_changed_work);
1477 #endif
1478 #endif /*IPV6_FILTERING*/
1479 cancel_work_sync(&local->reconfig_filter);
1480 cancel_work_sync(&local->tdls_chsw_work);
1481 flush_work(&local->sched_scan_stopped_work);
1482 flush_work(&local->radar_detected_work);
1483
1484 ieee80211_clear_tx_pending(local);
1485 rate_control_deinitialize(local);
1486
1487 if (skb_queue_len(&local->skb_queue) ||
1488 skb_queue_len(&local->skb_queue_unreliable))
1489 wiphy_warn(local->hw.wiphy, "skb_queue not empty\n");
1490 skb_queue_purge(&local->skb_queue);
1491 skb_queue_purge(&local->skb_queue_unreliable);
1492 skb_queue_purge(&local->skb_queue_tdls_chsw);
1493
1494 wiphy_unregister(local->hw.wiphy);
1495 destroy_workqueue(local->workqueue);
1496 ieee80211_led_exit(local);
1497 kfree(local->int_scan_req);
1498 }
1499
ieee80211_free_ack_frame(int id,void * p,void * data)1500 static int ieee80211_free_ack_frame(int id, void *p, void *data)
1501 {
1502 WARN_ONCE(1, "Have pending ack frames!\n");
1503 kfree_skb(p);
1504 return 0;
1505 }
1506
mac80211_free_hw(struct ieee80211_hw * hw)1507 void mac80211_free_hw(struct ieee80211_hw *hw)
1508 {
1509 struct ieee80211_local *local = hw_to_local(hw);
1510 enum nl80211_band band;
1511
1512 mutex_destroy(&local->iflist_mtx);
1513 mutex_destroy(&local->mtx);
1514
1515 #ifdef CONFIG_DRIVERS_HDF_XR829
1516 hdf_wiphy_unregister();
1517 #endif
1518
1519 if (local->wiphy_ciphers_allocated)
1520 kfree(local->hw.wiphy->cipher_suites);
1521
1522 idr_for_each(&local->ack_status_frames,
1523 ieee80211_free_ack_frame, NULL);
1524 idr_destroy(&local->ack_status_frames);
1525
1526 sta_info_stop(local);
1527
1528 ieee80211_free_led_names(local);
1529
1530 for (band = 0; band < NUM_NL80211_BANDS; band++) {
1531 if (!(local->sband_allocated & BIT(band)))
1532 continue;
1533 kfree(local->hw.wiphy->bands[band]);
1534 }
1535
1536 wiphy_free(local->hw.wiphy);
1537 }
1538
1539 #ifdef CONFIG_DRIVERS_HDF_XR829
wrap_get_wiphy(void)1540 struct wiphy* wrap_get_wiphy(void)
1541 {
1542 return g_wiphy;
1543 }
1544 #endif
1545
1546 #ifndef CONFIG_DRIVERS_HDF_XR829
ieee80211_init(void)1547 int __init ieee80211_init(void)
1548 #else
1549 int ieee80211_init(void)
1550 #endif
1551 {
1552 struct sk_buff *skb;
1553 int ret;
1554
1555 BUILD_BUG_ON(sizeof(struct ieee80211_tx_info) > sizeof(skb->cb));
1556 BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, driver_data) +
1557 IEEE80211_TX_INFO_DRIVER_DATA_SIZE > sizeof(skb->cb));
1558
1559 ret = rc80211_minstrel_init();
1560 if (ret)
1561 return ret;
1562
1563 ret = ieee80211_iface_init();
1564 if (ret)
1565 goto err_netdev;
1566
1567 return 0;
1568 err_netdev:
1569 rc80211_minstrel_exit();
1570
1571 return ret;
1572 }
1573
ieee80211_exit(void)1574 void ieee80211_exit(void)
1575 {
1576 rc80211_minstrel_exit();
1577
1578 ieee80211s_stop();
1579
1580 ieee80211_iface_exit();
1581
1582 rcu_barrier();
1583 }
1584
1585
1586 //subsys_initcall(ieee80211_init);
1587 //module_exit(ieee80211_exit);
1588
1589 #ifdef CONFIG_DRIVERS_HDF_XR829
1590 EXPORT_SYMBOL(xrmac_config_ops);
1591 EXPORT_SYMBOL(wrap_get_wiphy);
1592 #else
1593 MODULE_DESCRIPTION("IEEE 802.11 subsystem");
1594 MODULE_LICENSE("GPL");
1595 #endif
1596