Commit | Line | Data |
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d2912cb1 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
f0706e82 | 2 | /* |
c5d54fbf | 3 | * Interface handling |
0d143fe1 | 4 | * |
f0706e82 JB |
5 | * Copyright 2002-2005, Instant802 Networks, Inc. |
6 | * Copyright 2005-2006, Devicescape Software, Inc. | |
7 | * Copyright (c) 2006 Jiri Benc <jbenc@suse.cz> | |
75636525 | 8 | * Copyright 2008, Johannes Berg <johannes@sipsolutions.net> |
d98ad83e | 9 | * Copyright 2013-2014 Intel Mobile Communications GmbH |
d2941df8 | 10 | * Copyright (c) 2016 Intel Deutschland GmbH |
52b4810b | 11 | * Copyright (C) 2018-2020 Intel Corporation |
f0706e82 | 12 | */ |
5a0e3ad6 | 13 | #include <linux/slab.h> |
f0706e82 JB |
14 | #include <linux/kernel.h> |
15 | #include <linux/if_arp.h> | |
16 | #include <linux/netdevice.h> | |
17 | #include <linux/rtnetlink.h> | |
18 | #include <net/mac80211.h> | |
cf0277e7 | 19 | #include <net/ieee80211_radiotap.h> |
f0706e82 JB |
20 | #include "ieee80211_i.h" |
21 | #include "sta_info.h" | |
e9f207f0 | 22 | #include "debugfs_netdev.h" |
ee385855 | 23 | #include "mesh.h" |
0d143fe1 | 24 | #include "led.h" |
24487981 | 25 | #include "driver-ops.h" |
cf0277e7 | 26 | #include "wme.h" |
1be7fe8d | 27 | #include "rate.h" |
0d143fe1 | 28 | |
c771c9d8 JB |
29 | /** |
30 | * DOC: Interface list locking | |
31 | * | |
32 | * The interface list in each struct ieee80211_local is protected | |
33 | * three-fold: | |
34 | * | |
35 | * (1) modifications may only be done under the RTNL | |
36 | * (2) modifications and readers are protected against each other by | |
37 | * the iflist_mtx. | |
38 | * (3) modifications are done in an RCU manner so atomic readers | |
39 | * can traverse the list in RCU-safe blocks. | |
40 | * | |
41 | * As a consequence, reads (traversals) of the list can be protected | |
42 | * by either the RTNL, the iflist_mtx or RCU. | |
43 | */ | |
44 | ||
42bd20d9 AE |
45 | static void ieee80211_iface_work(struct work_struct *work); |
46 | ||
1ea6f9c0 JB |
47 | bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata) |
48 | { | |
49 | struct ieee80211_chanctx_conf *chanctx_conf; | |
50 | int power; | |
51 | ||
52 | rcu_read_lock(); | |
53 | chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); | |
54 | if (!chanctx_conf) { | |
55 | rcu_read_unlock(); | |
56 | return false; | |
57 | } | |
58 | ||
0430c883 | 59 | power = ieee80211_chandef_max_power(&chanctx_conf->def); |
1ea6f9c0 JB |
60 | rcu_read_unlock(); |
61 | ||
62 | if (sdata->user_power_level != IEEE80211_UNSET_POWER_LEVEL) | |
63 | power = min(power, sdata->user_power_level); | |
64 | ||
65 | if (sdata->ap_power_level != IEEE80211_UNSET_POWER_LEVEL) | |
66 | power = min(power, sdata->ap_power_level); | |
67 | ||
68 | if (power != sdata->vif.bss_conf.txpower) { | |
69 | sdata->vif.bss_conf.txpower = power; | |
70 | ieee80211_hw_config(sdata->local, 0); | |
71 | return true; | |
72 | } | |
73 | ||
74 | return false; | |
75 | } | |
76 | ||
db82d8a9 LB |
77 | void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata, |
78 | bool update_bss) | |
1ea6f9c0 | 79 | { |
5ad11b50 EG |
80 | if (__ieee80211_recalc_txpower(sdata) || |
81 | (update_bss && ieee80211_sdata_running(sdata))) | |
1ea6f9c0 JB |
82 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_TXPOWER); |
83 | } | |
c771c9d8 | 84 | |
62a40a15 | 85 | static u32 __ieee80211_idle_off(struct ieee80211_local *local) |
cc45ae54 JB |
86 | { |
87 | if (!(local->hw.conf.flags & IEEE80211_CONF_IDLE)) | |
88 | return 0; | |
89 | ||
90 | local->hw.conf.flags &= ~IEEE80211_CONF_IDLE; | |
91 | return IEEE80211_CONF_CHANGE_IDLE; | |
92 | } | |
93 | ||
62a40a15 | 94 | static u32 __ieee80211_idle_on(struct ieee80211_local *local) |
cc45ae54 JB |
95 | { |
96 | if (local->hw.conf.flags & IEEE80211_CONF_IDLE) | |
97 | return 0; | |
98 | ||
3b24f4c6 | 99 | ieee80211_flush_queues(local, NULL, false); |
cc45ae54 JB |
100 | |
101 | local->hw.conf.flags |= IEEE80211_CONF_IDLE; | |
102 | return IEEE80211_CONF_CHANGE_IDLE; | |
103 | } | |
104 | ||
62a40a15 JB |
105 | static u32 __ieee80211_recalc_idle(struct ieee80211_local *local, |
106 | bool force_active) | |
cc45ae54 | 107 | { |
1d5e1266 | 108 | bool working, scanning, active; |
cc45ae54 | 109 | unsigned int led_trig_start = 0, led_trig_stop = 0; |
cc45ae54 | 110 | |
cc45ae54 JB |
111 | lockdep_assert_held(&local->mtx); |
112 | ||
62a40a15 JB |
113 | active = force_active || |
114 | !list_empty(&local->chanctx_list) || | |
115 | local->monitors; | |
cc45ae54 | 116 | |
1d5e1266 JB |
117 | working = !local->ops->remain_on_channel && |
118 | !list_empty(&local->roc_list); | |
cc45ae54 | 119 | |
f1e3e051 JB |
120 | scanning = test_bit(SCAN_SW_SCANNING, &local->scanning) || |
121 | test_bit(SCAN_ONCHANNEL_SCANNING, &local->scanning); | |
cc45ae54 | 122 | |
cc45ae54 JB |
123 | if (working || scanning) |
124 | led_trig_start |= IEEE80211_TPT_LEDTRIG_FL_WORK; | |
125 | else | |
126 | led_trig_stop |= IEEE80211_TPT_LEDTRIG_FL_WORK; | |
127 | ||
fd0f979a | 128 | if (active) |
cc45ae54 JB |
129 | led_trig_start |= IEEE80211_TPT_LEDTRIG_FL_CONNECTED; |
130 | else | |
131 | led_trig_stop |= IEEE80211_TPT_LEDTRIG_FL_CONNECTED; | |
132 | ||
133 | ieee80211_mod_tpt_led_trig(local, led_trig_start, led_trig_stop); | |
134 | ||
fd0f979a | 135 | if (working || scanning || active) |
62a40a15 JB |
136 | return __ieee80211_idle_off(local); |
137 | return __ieee80211_idle_on(local); | |
138 | } | |
139 | ||
140 | u32 ieee80211_idle_off(struct ieee80211_local *local) | |
141 | { | |
142 | return __ieee80211_recalc_idle(local, true); | |
143 | } | |
144 | ||
145 | void ieee80211_recalc_idle(struct ieee80211_local *local) | |
146 | { | |
147 | u32 change = __ieee80211_recalc_idle(local, false); | |
fd0f979a JB |
148 | if (change) |
149 | ieee80211_hw_config(local, change); | |
cc45ae54 JB |
150 | } |
151 | ||
3899ba90 | 152 | static int ieee80211_verify_mac(struct ieee80211_sub_if_data *sdata, u8 *addr, |
31eba5bc | 153 | bool check_dup) |
478622e8 | 154 | { |
ac20976d HS |
155 | struct ieee80211_local *local = sdata->local; |
156 | struct ieee80211_sub_if_data *iter; | |
478622e8 HS |
157 | u64 new, mask, tmp; |
158 | u8 *m; | |
159 | int ret = 0; | |
160 | ||
161 | if (is_zero_ether_addr(local->hw.wiphy->addr_mask)) | |
162 | return 0; | |
163 | ||
164 | m = addr; | |
165 | new = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) | | |
166 | ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) | | |
167 | ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8); | |
168 | ||
169 | m = local->hw.wiphy->addr_mask; | |
170 | mask = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) | | |
171 | ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) | | |
172 | ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8); | |
173 | ||
31eba5bc FF |
174 | if (!check_dup) |
175 | return ret; | |
478622e8 HS |
176 | |
177 | mutex_lock(&local->iflist_mtx); | |
ac20976d HS |
178 | list_for_each_entry(iter, &local->interfaces, list) { |
179 | if (iter == sdata) | |
478622e8 HS |
180 | continue; |
181 | ||
3899ba90 | 182 | if (iter->vif.type == NL80211_IFTYPE_MONITOR && |
d8212184 | 183 | !(iter->u.mntr.flags & MONITOR_FLAG_ACTIVE)) |
478622e8 HS |
184 | continue; |
185 | ||
ac20976d | 186 | m = iter->vif.addr; |
478622e8 HS |
187 | tmp = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) | |
188 | ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) | | |
189 | ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8); | |
190 | ||
191 | if ((new & ~mask) != (tmp & ~mask)) { | |
192 | ret = -EINVAL; | |
193 | break; | |
194 | } | |
195 | } | |
196 | mutex_unlock(&local->iflist_mtx); | |
197 | ||
198 | return ret; | |
199 | } | |
200 | ||
47846c9b JB |
201 | static int ieee80211_change_mac(struct net_device *dev, void *addr) |
202 | { | |
203 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
fc5f7577 | 204 | struct sockaddr *sa = addr; |
31eba5bc | 205 | bool check_dup = true; |
47846c9b JB |
206 | int ret; |
207 | ||
9607e6b6 | 208 | if (ieee80211_sdata_running(sdata)) |
47846c9b JB |
209 | return -EBUSY; |
210 | ||
31eba5bc | 211 | if (sdata->vif.type == NL80211_IFTYPE_MONITOR && |
d8212184 | 212 | !(sdata->u.mntr.flags & MONITOR_FLAG_ACTIVE)) |
31eba5bc FF |
213 | check_dup = false; |
214 | ||
3899ba90 | 215 | ret = ieee80211_verify_mac(sdata, sa->sa_data, check_dup); |
478622e8 HS |
216 | if (ret) |
217 | return ret; | |
218 | ||
fc5f7577 | 219 | ret = eth_mac_addr(dev, sa); |
47846c9b JB |
220 | |
221 | if (ret == 0) | |
fc5f7577 | 222 | memcpy(sdata->vif.addr, sa->sa_data, ETH_ALEN); |
47846c9b JB |
223 | |
224 | return ret; | |
225 | } | |
226 | ||
0d143fe1 JB |
227 | static inline int identical_mac_addr_allowed(int type1, int type2) |
228 | { | |
229 | return type1 == NL80211_IFTYPE_MONITOR || | |
230 | type2 == NL80211_IFTYPE_MONITOR || | |
f142c6b9 JB |
231 | type1 == NL80211_IFTYPE_P2P_DEVICE || |
232 | type2 == NL80211_IFTYPE_P2P_DEVICE || | |
0d143fe1 JB |
233 | (type1 == NL80211_IFTYPE_AP && type2 == NL80211_IFTYPE_AP_VLAN) || |
234 | (type1 == NL80211_IFTYPE_AP_VLAN && | |
235 | (type2 == NL80211_IFTYPE_AP || | |
236 | type2 == NL80211_IFTYPE_AP_VLAN)); | |
237 | } | |
238 | ||
87490f6d JB |
239 | static int ieee80211_check_concurrent_iface(struct ieee80211_sub_if_data *sdata, |
240 | enum nl80211_iftype iftype) | |
0d143fe1 | 241 | { |
b4a4bf5d | 242 | struct ieee80211_local *local = sdata->local; |
87490f6d | 243 | struct ieee80211_sub_if_data *nsdata; |
b6a55015 | 244 | int ret; |
0d143fe1 | 245 | |
87490f6d | 246 | ASSERT_RTNL(); |
0d143fe1 JB |
247 | |
248 | /* we hold the RTNL here so can safely walk the list */ | |
249 | list_for_each_entry(nsdata, &local->interfaces, list) { | |
371a255e | 250 | if (nsdata != sdata && ieee80211_sdata_running(nsdata)) { |
239281f8 RL |
251 | /* |
252 | * Only OCB and monitor mode may coexist | |
253 | */ | |
254 | if ((sdata->vif.type == NL80211_IFTYPE_OCB && | |
255 | nsdata->vif.type != NL80211_IFTYPE_MONITOR) || | |
256 | (sdata->vif.type != NL80211_IFTYPE_MONITOR && | |
257 | nsdata->vif.type == NL80211_IFTYPE_OCB)) | |
258 | return -EBUSY; | |
259 | ||
0d143fe1 JB |
260 | /* |
261 | * Allow only a single IBSS interface to be up at any | |
262 | * time. This is restricted because beacon distribution | |
263 | * cannot work properly if both are in the same IBSS. | |
264 | * | |
265 | * To remove this restriction we'd have to disallow them | |
266 | * from setting the same SSID on different IBSS interfaces | |
267 | * belonging to the same hardware. Then, however, we're | |
268 | * faced with having to adopt two different TSF timers... | |
269 | */ | |
87490f6d | 270 | if (iftype == NL80211_IFTYPE_ADHOC && |
0d143fe1 JB |
271 | nsdata->vif.type == NL80211_IFTYPE_ADHOC) |
272 | return -EBUSY; | |
73da7d5b SW |
273 | /* |
274 | * will not add another interface while any channel | |
275 | * switch is active. | |
276 | */ | |
277 | if (nsdata->vif.csa_active) | |
278 | return -EBUSY; | |
0d143fe1 JB |
279 | |
280 | /* | |
281 | * The remaining checks are only performed for interfaces | |
282 | * with the same MAC address. | |
283 | */ | |
371a255e JB |
284 | if (!ether_addr_equal(sdata->vif.addr, |
285 | nsdata->vif.addr)) | |
0d143fe1 JB |
286 | continue; |
287 | ||
288 | /* | |
289 | * check whether it may have the same address | |
290 | */ | |
87490f6d | 291 | if (!identical_mac_addr_allowed(iftype, |
0d143fe1 JB |
292 | nsdata->vif.type)) |
293 | return -ENOTUNIQ; | |
294 | ||
295 | /* | |
296 | * can only add VLANs to enabled APs | |
297 | */ | |
87490f6d | 298 | if (iftype == NL80211_IFTYPE_AP_VLAN && |
0d143fe1 JB |
299 | nsdata->vif.type == NL80211_IFTYPE_AP) |
300 | sdata->bss = &nsdata->u.ap; | |
301 | } | |
302 | } | |
303 | ||
b6a55015 LC |
304 | mutex_lock(&local->chanctx_mtx); |
305 | ret = ieee80211_check_combinations(sdata, NULL, 0, 0); | |
306 | mutex_unlock(&local->chanctx_mtx); | |
307 | return ret; | |
87490f6d JB |
308 | } |
309 | ||
a9865538 JB |
310 | static int ieee80211_check_queues(struct ieee80211_sub_if_data *sdata, |
311 | enum nl80211_iftype iftype) | |
3a25a8c8 JB |
312 | { |
313 | int n_queues = sdata->local->hw.queues; | |
314 | int i; | |
315 | ||
708d50ed AB |
316 | if (iftype == NL80211_IFTYPE_NAN) |
317 | return 0; | |
318 | ||
a9865538 | 319 | if (iftype != NL80211_IFTYPE_P2P_DEVICE) { |
0ef24e52 IP |
320 | for (i = 0; i < IEEE80211_NUM_ACS; i++) { |
321 | if (WARN_ON_ONCE(sdata->vif.hw_queue[i] == | |
322 | IEEE80211_INVAL_HW_QUEUE)) | |
323 | return -EINVAL; | |
324 | if (WARN_ON_ONCE(sdata->vif.hw_queue[i] >= | |
325 | n_queues)) | |
326 | return -EINVAL; | |
327 | } | |
3a25a8c8 JB |
328 | } |
329 | ||
a9865538 JB |
330 | if ((iftype != NL80211_IFTYPE_AP && |
331 | iftype != NL80211_IFTYPE_P2P_GO && | |
332 | iftype != NL80211_IFTYPE_MESH_POINT) || | |
30686bf7 | 333 | !ieee80211_hw_check(&sdata->local->hw, QUEUE_CONTROL)) { |
3a25a8c8 JB |
334 | sdata->vif.cab_queue = IEEE80211_INVAL_HW_QUEUE; |
335 | return 0; | |
336 | } | |
337 | ||
338 | if (WARN_ON_ONCE(sdata->vif.cab_queue == IEEE80211_INVAL_HW_QUEUE)) | |
339 | return -EINVAL; | |
340 | ||
341 | if (WARN_ON_ONCE(sdata->vif.cab_queue >= n_queues)) | |
342 | return -EINVAL; | |
343 | ||
344 | return 0; | |
345 | } | |
346 | ||
4b7afb52 | 347 | static int ieee80211_open(struct net_device *dev) |
6aea26ce | 348 | { |
4b7afb52 FF |
349 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
350 | int err; | |
351 | ||
352 | /* fail early if user set an invalid address */ | |
353 | if (!is_valid_ether_addr(dev->dev_addr)) | |
354 | return -EADDRNOTAVAIL; | |
355 | ||
356 | err = ieee80211_check_concurrent_iface(sdata, sdata->vif.type); | |
357 | if (err) | |
358 | return err; | |
359 | ||
a05829a7 JB |
360 | wiphy_lock(sdata->local->hw.wiphy); |
361 | err = ieee80211_do_open(&sdata->wdev, true); | |
362 | wiphy_unlock(sdata->local->hw.wiphy); | |
363 | ||
364 | return err; | |
6aea26ce FF |
365 | } |
366 | ||
a05829a7 | 367 | static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata, bool going_down) |
6aea26ce FF |
368 | { |
369 | struct ieee80211_local *local = sdata->local; | |
4b7afb52 FF |
370 | unsigned long flags; |
371 | struct sk_buff *skb, *tmp; | |
372 | u32 hw_reconf_flags = 0; | |
373 | int i, flushed; | |
374 | struct ps_data *ps; | |
375 | struct cfg80211_chan_def chandef; | |
376 | bool cancel_scan; | |
377 | struct cfg80211_nan_func *func; | |
6aea26ce | 378 | |
4b7afb52 | 379 | clear_bit(SDATA_STATE_RUNNING, &sdata->state); |
6aea26ce | 380 | |
4b7afb52 FF |
381 | cancel_scan = rcu_access_pointer(local->scan_sdata) == sdata; |
382 | if (cancel_scan) | |
383 | ieee80211_scan_cancel(local); | |
6aea26ce | 384 | |
4b7afb52 FF |
385 | /* |
386 | * Stop TX on this interface first. | |
387 | */ | |
388 | if (sdata->dev) | |
389 | netif_tx_stop_all_queues(sdata->dev); | |
6aea26ce | 390 | |
4b7afb52 | 391 | ieee80211_roc_purge(local, sdata); |
6aea26ce | 392 | |
4b7afb52 FF |
393 | switch (sdata->vif.type) { |
394 | case NL80211_IFTYPE_STATION: | |
395 | ieee80211_mgd_stop(sdata); | |
396 | break; | |
397 | case NL80211_IFTYPE_ADHOC: | |
398 | ieee80211_ibss_stop(sdata); | |
399 | break; | |
400 | case NL80211_IFTYPE_MONITOR: | |
401 | if (sdata->u.mntr.flags & MONITOR_FLAG_COOK_FRAMES) | |
402 | break; | |
403 | list_del_rcu(&sdata->u.mntr.list); | |
404 | break; | |
405 | default: | |
406 | break; | |
407 | } | |
6aea26ce | 408 | |
4b7afb52 FF |
409 | /* |
410 | * Remove all stations associated with this interface. | |
411 | * | |
412 | * This must be done before calling ops->remove_interface() | |
413 | * because otherwise we can later invoke ops->sta_notify() | |
414 | * whenever the STAs are removed, and that invalidates driver | |
415 | * assumptions about always getting a vif pointer that is valid | |
416 | * (because if we remove a STA after ops->remove_interface() | |
417 | * the driver will have removed the vif info already!) | |
418 | * | |
70d9c599 | 419 | * For AP_VLANs stations may exist since there's nothing else that |
4b7afb52 FF |
420 | * would have removed them, but in other modes there shouldn't |
421 | * be any stations. | |
422 | */ | |
423 | flushed = sta_info_flush(sdata); | |
70d9c599 | 424 | WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP_VLAN && flushed > 0); |
6aea26ce | 425 | |
4b7afb52 FF |
426 | /* don't count this interface for allmulti while it is down */ |
427 | if (sdata->flags & IEEE80211_SDATA_ALLMULTI) | |
428 | atomic_dec(&local->iff_allmultis); | |
6aea26ce | 429 | |
4b7afb52 FF |
430 | if (sdata->vif.type == NL80211_IFTYPE_AP) { |
431 | local->fif_pspoll--; | |
432 | local->fif_probe_req--; | |
433 | } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { | |
434 | local->fif_probe_req--; | |
6aea26ce FF |
435 | } |
436 | ||
4b7afb52 FF |
437 | if (sdata->dev) { |
438 | netif_addr_lock_bh(sdata->dev); | |
439 | spin_lock_bh(&local->filter_lock); | |
440 | __hw_addr_unsync(&local->mc_list, &sdata->dev->mc, | |
441 | sdata->dev->addr_len); | |
442 | spin_unlock_bh(&local->filter_lock); | |
443 | netif_addr_unlock_bh(sdata->dev); | |
6aea26ce | 444 | } |
6aea26ce | 445 | |
4b7afb52 FF |
446 | del_timer_sync(&local->dynamic_ps_timer); |
447 | cancel_work_sync(&local->dynamic_ps_enable_work); | |
6aea26ce | 448 | |
4b7afb52 FF |
449 | cancel_work_sync(&sdata->recalc_smps); |
450 | sdata_lock(sdata); | |
451 | mutex_lock(&local->mtx); | |
452 | sdata->vif.csa_active = false; | |
453 | if (sdata->vif.type == NL80211_IFTYPE_STATION) | |
454 | sdata->u.mgd.csa_waiting_bcn = false; | |
455 | if (sdata->csa_block_tx) { | |
456 | ieee80211_wake_vif_queues(local, sdata, | |
457 | IEEE80211_QUEUE_STOP_REASON_CSA); | |
458 | sdata->csa_block_tx = false; | |
6aea26ce | 459 | } |
4b7afb52 FF |
460 | mutex_unlock(&local->mtx); |
461 | sdata_unlock(sdata); | |
6aea26ce | 462 | |
4b7afb52 | 463 | cancel_work_sync(&sdata->csa_finalize_work); |
85416a4f | 464 | |
4b7afb52 | 465 | cancel_delayed_work_sync(&sdata->dfs_cac_timer_work); |
85416a4f | 466 | |
4b7afb52 FF |
467 | if (sdata->wdev.cac_started) { |
468 | chandef = sdata->vif.bss_conf.chandef; | |
469 | WARN_ON(local->suspended); | |
470 | mutex_lock(&local->mtx); | |
471 | ieee80211_vif_release_channel(sdata); | |
472 | mutex_unlock(&local->mtx); | |
473 | cfg80211_cac_event(sdata->dev, &chandef, | |
474 | NL80211_RADAR_CAC_ABORTED, | |
475 | GFP_KERNEL); | |
476 | } | |
85416a4f | 477 | |
4b7afb52 FF |
478 | /* APs need special treatment */ |
479 | if (sdata->vif.type == NL80211_IFTYPE_AP) { | |
480 | struct ieee80211_sub_if_data *vlan, *tmpsdata; | |
85416a4f | 481 | |
4b7afb52 FF |
482 | /* down all dependent devices, that is VLANs */ |
483 | list_for_each_entry_safe(vlan, tmpsdata, &sdata->u.ap.vlans, | |
484 | u.vlan.list) | |
485 | dev_close(vlan->dev); | |
486 | WARN_ON(!list_empty(&sdata->u.ap.vlans)); | |
487 | } else if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { | |
488 | /* remove all packets in parent bc_buf pointing to this dev */ | |
489 | ps = &sdata->bss->ps; | |
3a25a8c8 | 490 | |
4b7afb52 FF |
491 | spin_lock_irqsave(&ps->bc_buf.lock, flags); |
492 | skb_queue_walk_safe(&ps->bc_buf, skb, tmp) { | |
493 | if (skb->dev == sdata->dev) { | |
494 | __skb_unlink(skb, &ps->bc_buf); | |
495 | local->total_ps_buffered--; | |
496 | ieee80211_free_txskb(&local->hw, skb); | |
497 | } | |
498 | } | |
499 | spin_unlock_irqrestore(&ps->bc_buf.lock, flags); | |
3a25a8c8 | 500 | } |
3a25a8c8 | 501 | |
4b7afb52 FF |
502 | if (going_down) |
503 | local->open_count--; | |
4b6f1dd6 | 504 | |
4b7afb52 FF |
505 | switch (sdata->vif.type) { |
506 | case NL80211_IFTYPE_AP_VLAN: | |
507 | mutex_lock(&local->mtx); | |
508 | list_del(&sdata->u.vlan.list); | |
509 | mutex_unlock(&local->mtx); | |
510 | RCU_INIT_POINTER(sdata->vif.chanctx_conf, NULL); | |
511 | /* see comment in the default case below */ | |
512 | ieee80211_free_keys(sdata, true); | |
513 | /* no need to tell driver */ | |
514 | break; | |
515 | case NL80211_IFTYPE_MONITOR: | |
516 | if (sdata->u.mntr.flags & MONITOR_FLAG_COOK_FRAMES) { | |
517 | local->cooked_mntrs--; | |
518 | break; | |
519 | } | |
685fb72b | 520 | |
4b7afb52 FF |
521 | local->monitors--; |
522 | if (local->monitors == 0) { | |
523 | local->hw.conf.flags &= ~IEEE80211_CONF_MONITOR; | |
524 | hw_reconf_flags |= IEEE80211_CONF_CHANGE_MONITOR; | |
525 | } | |
4b6f1dd6 | 526 | |
4b7afb52 FF |
527 | ieee80211_adjust_monitor_flags(sdata, -1); |
528 | break; | |
529 | case NL80211_IFTYPE_NAN: | |
530 | /* clean all the functions */ | |
531 | spin_lock_bh(&sdata->u.nan.func_lock); | |
4b6f1dd6 | 532 | |
4b7afb52 FF |
533 | idr_for_each_entry(&sdata->u.nan.function_inst_ids, func, i) { |
534 | idr_remove(&sdata->u.nan.function_inst_ids, i); | |
535 | cfg80211_free_nan_func(func); | |
536 | } | |
537 | idr_destroy(&sdata->u.nan.function_inst_ids); | |
3a25a8c8 | 538 | |
4b7afb52 FF |
539 | spin_unlock_bh(&sdata->u.nan.func_lock); |
540 | break; | |
541 | case NL80211_IFTYPE_P2P_DEVICE: | |
542 | /* relies on synchronize_rcu() below */ | |
543 | RCU_INIT_POINTER(local->p2p_sdata, NULL); | |
544 | fallthrough; | |
545 | default: | |
546 | cancel_work_sync(&sdata->work); | |
547 | /* | |
548 | * When we get here, the interface is marked down. | |
549 | * Free the remaining keys, if there are any | |
550 | * (which can happen in AP mode if userspace sets | |
70d9c599 | 551 | * keys before the interface is operating) |
4b7afb52 FF |
552 | * |
553 | * Force the key freeing to always synchronize_net() | |
554 | * to wait for the RX path in case it is using this | |
555 | * interface enqueuing frames at this very time on | |
556 | * another CPU. | |
557 | */ | |
558 | ieee80211_free_keys(sdata, true); | |
559 | skb_queue_purge(&sdata->skb_queue); | |
4b6f1dd6 JB |
560 | } |
561 | ||
4b7afb52 FF |
562 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
563 | for (i = 0; i < IEEE80211_MAX_QUEUES; i++) { | |
564 | skb_queue_walk_safe(&local->pending[i], skb, tmp) { | |
565 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); | |
566 | if (info->control.vif == &sdata->vif) { | |
567 | __skb_unlink(skb, &local->pending[i]); | |
568 | ieee80211_free_txskb(&local->hw, skb); | |
569 | } | |
570 | } | |
3a25a8c8 | 571 | } |
4b7afb52 | 572 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
3a25a8c8 | 573 | |
4b7afb52 FF |
574 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) |
575 | ieee80211_txq_remove_vlan(local, sdata); | |
fab57a6c | 576 | |
4b7afb52 FF |
577 | sdata->bss = NULL; |
578 | ||
579 | if (local->open_count == 0) | |
580 | ieee80211_clear_tx_pending(local); | |
581 | ||
582 | sdata->vif.bss_conf.beacon_int = 0; | |
583 | ||
584 | /* | |
585 | * If the interface goes down while suspended, presumably because | |
586 | * the device was unplugged and that happens before our resume, | |
587 | * then the driver is already unconfigured and the remainder of | |
588 | * this function isn't needed. | |
589 | * XXX: what about WoWLAN? If the device has software state, e.g. | |
590 | * memory allocated, it might expect teardown commands from | |
591 | * mac80211 here? | |
592 | */ | |
593 | if (local->suspended) { | |
594 | WARN_ON(local->wowlan); | |
595 | WARN_ON(rtnl_dereference(local->monitor_sdata)); | |
596 | return; | |
55de908a JB |
597 | } |
598 | ||
4b7afb52 FF |
599 | switch (sdata->vif.type) { |
600 | case NL80211_IFTYPE_AP_VLAN: | |
601 | break; | |
602 | case NL80211_IFTYPE_MONITOR: | |
603 | if (local->monitors == 0) | |
604 | ieee80211_del_virtual_monitor(local); | |
42bd20d9 | 605 | |
4b7afb52 FF |
606 | mutex_lock(&local->mtx); |
607 | ieee80211_recalc_idle(local); | |
608 | mutex_unlock(&local->mtx); | |
4b6f1dd6 | 609 | |
4b7afb52 FF |
610 | if (!(sdata->u.mntr.flags & MONITOR_FLAG_ACTIVE)) |
611 | break; | |
4b6f1dd6 | 612 | |
4b7afb52 FF |
613 | fallthrough; |
614 | default: | |
615 | if (going_down) | |
616 | drv_remove_interface(local, sdata); | |
617 | } | |
4b6f1dd6 | 618 | |
4b7afb52 | 619 | ieee80211_recalc_ps(local); |
8b305780 | 620 | |
4b7afb52 FF |
621 | if (cancel_scan) |
622 | flush_delayed_work(&local->scan_work); | |
4b6f1dd6 | 623 | |
4b7afb52 FF |
624 | if (local->open_count == 0) { |
625 | ieee80211_stop_device(local); | |
626 | ||
627 | /* no reconfiguring after stop! */ | |
8b305780 JB |
628 | return; |
629 | } | |
4b6f1dd6 | 630 | |
4b7afb52 FF |
631 | /* do after stop to avoid reconfiguring when we stop anyway */ |
632 | ieee80211_configure_filter(local); | |
633 | ieee80211_hw_config(local, hw_reconf_flags); | |
8b305780 | 634 | |
4b7afb52 FF |
635 | if (local->monitors == local->open_count) |
636 | ieee80211_add_virtual_monitor(local); | |
637 | } | |
4b6f1dd6 | 638 | |
4b7afb52 FF |
639 | static int ieee80211_stop(struct net_device *dev) |
640 | { | |
641 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
55de908a | 642 | |
a05829a7 | 643 | wiphy_lock(sdata->local->hw.wiphy); |
4b7afb52 | 644 | ieee80211_do_stop(sdata, true); |
a05829a7 | 645 | wiphy_unlock(sdata->local->hw.wiphy); |
4b6f1dd6 | 646 | |
4b7afb52 | 647 | return 0; |
4b6f1dd6 JB |
648 | } |
649 | ||
4b7afb52 | 650 | static void ieee80211_set_multicast_list(struct net_device *dev) |
87490f6d | 651 | { |
4b7afb52 | 652 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
87490f6d | 653 | struct ieee80211_local *local = sdata->local; |
4b7afb52 | 654 | int allmulti, sdata_allmulti; |
87490f6d | 655 | |
4b7afb52 FF |
656 | allmulti = !!(dev->flags & IFF_ALLMULTI); |
657 | sdata_allmulti = !!(sdata->flags & IEEE80211_SDATA_ALLMULTI); | |
665c93a9 | 658 | |
4b7afb52 FF |
659 | if (allmulti != sdata_allmulti) { |
660 | if (dev->flags & IFF_ALLMULTI) | |
661 | atomic_inc(&local->iff_allmultis); | |
662 | else | |
663 | atomic_dec(&local->iff_allmultis); | |
664 | sdata->flags ^= IEEE80211_SDATA_ALLMULTI; | |
665 | } | |
665c93a9 | 666 | |
4b7afb52 FF |
667 | spin_lock_bh(&local->filter_lock); |
668 | __hw_addr_sync(&local->mc_list, &dev->mc, dev->addr_len); | |
669 | spin_unlock_bh(&local->filter_lock); | |
670 | ieee80211_queue_work(&local->hw, &local->reconfig_filter); | |
671 | } | |
665c93a9 | 672 | |
4b7afb52 FF |
673 | /* |
674 | * Called when the netdev is removed or, by the code below, before | |
675 | * the interface type changes. | |
676 | */ | |
677 | static void ieee80211_teardown_sdata(struct ieee80211_sub_if_data *sdata) | |
678 | { | |
679 | int i; | |
f9dca80b | 680 | |
4b7afb52 FF |
681 | /* free extra data */ |
682 | ieee80211_free_keys(sdata, false); | |
f9dca80b | 683 | |
4b7afb52 | 684 | ieee80211_debugfs_remove_netdev(sdata); |
0d143fe1 | 685 | |
4b7afb52 FF |
686 | for (i = 0; i < IEEE80211_FRAGMENT_MAX; i++) |
687 | __skb_queue_purge(&sdata->fragments[i].skb_list); | |
688 | sdata->fragment_next = 0; | |
0d143fe1 | 689 | |
4b7afb52 FF |
690 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
691 | ieee80211_mesh_teardown_sdata(sdata); | |
692 | } | |
0d143fe1 | 693 | |
4b7afb52 FF |
694 | static void ieee80211_uninit(struct net_device *dev) |
695 | { | |
696 | ieee80211_teardown_sdata(IEEE80211_DEV_TO_SUB_IF(dev)); | |
697 | } | |
075e0847 | 698 | |
4b7afb52 FF |
699 | static u16 ieee80211_netdev_select_queue(struct net_device *dev, |
700 | struct sk_buff *skb, | |
701 | struct net_device *sb_dev) | |
702 | { | |
703 | return ieee80211_select_queue(IEEE80211_DEV_TO_SUB_IF(dev), skb); | |
704 | } | |
0d143fe1 | 705 | |
4b7afb52 FF |
706 | static void |
707 | ieee80211_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats) | |
708 | { | |
6401297e | 709 | dev_fetch_sw_netstats(stats, dev->tstats); |
4b7afb52 | 710 | } |
e3b90ca2 | 711 | |
4b7afb52 FF |
712 | static const struct net_device_ops ieee80211_dataif_ops = { |
713 | .ndo_open = ieee80211_open, | |
714 | .ndo_stop = ieee80211_stop, | |
715 | .ndo_uninit = ieee80211_uninit, | |
716 | .ndo_start_xmit = ieee80211_subif_start_xmit, | |
717 | .ndo_set_rx_mode = ieee80211_set_multicast_list, | |
718 | .ndo_set_mac_address = ieee80211_change_mac, | |
719 | .ndo_select_queue = ieee80211_netdev_select_queue, | |
720 | .ndo_get_stats64 = ieee80211_get_stats64, | |
721 | }; | |
e3b90ca2 | 722 | |
4b7afb52 FF |
723 | static u16 ieee80211_monitor_select_queue(struct net_device *dev, |
724 | struct sk_buff *skb, | |
725 | struct net_device *sb_dev) | |
726 | { | |
727 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
728 | struct ieee80211_local *local = sdata->local; | |
729 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); | |
730 | struct ieee80211_hdr *hdr; | |
731 | int len_rthdr; | |
90e8f58d | 732 | |
4b7afb52 FF |
733 | if (local->hw.queues < IEEE80211_NUM_ACS) |
734 | return 0; | |
0d143fe1 | 735 | |
4b7afb52 FF |
736 | /* reset flags and info before parsing radiotap header */ |
737 | memset(info, 0, sizeof(*info)); | |
59034591 | 738 | |
4b7afb52 FF |
739 | if (!ieee80211_parse_tx_radiotap(skb, dev)) |
740 | return 0; /* doesn't matter, frame will be dropped */ | |
0d143fe1 | 741 | |
4b7afb52 FF |
742 | len_rthdr = ieee80211_get_radiotap_len(skb->data); |
743 | hdr = (struct ieee80211_hdr *)(skb->data + len_rthdr); | |
744 | if (skb->len < len_rthdr + 2 || | |
745 | skb->len < len_rthdr + ieee80211_hdrlen(hdr->frame_control)) | |
746 | return 0; /* doesn't matter, frame will be dropped */ | |
2d2080c3 | 747 | |
4b7afb52 FF |
748 | return ieee80211_select_queue_80211(sdata, skb, hdr); |
749 | } | |
0d143fe1 | 750 | |
4b7afb52 FF |
751 | static const struct net_device_ops ieee80211_monitorif_ops = { |
752 | .ndo_open = ieee80211_open, | |
753 | .ndo_stop = ieee80211_stop, | |
754 | .ndo_uninit = ieee80211_uninit, | |
755 | .ndo_start_xmit = ieee80211_monitor_start_xmit, | |
756 | .ndo_set_rx_mode = ieee80211_set_multicast_list, | |
757 | .ndo_set_mac_address = ieee80211_change_mac, | |
758 | .ndo_select_queue = ieee80211_monitor_select_queue, | |
759 | .ndo_get_stats64 = ieee80211_get_stats64, | |
760 | }; | |
0d143fe1 | 761 | |
4b7afb52 FF |
762 | static const struct net_device_ops ieee80211_dataif_8023_ops = { |
763 | .ndo_open = ieee80211_open, | |
764 | .ndo_stop = ieee80211_stop, | |
765 | .ndo_uninit = ieee80211_uninit, | |
766 | .ndo_start_xmit = ieee80211_subif_start_xmit_8023, | |
767 | .ndo_set_rx_mode = ieee80211_set_multicast_list, | |
768 | .ndo_set_mac_address = ieee80211_change_mac, | |
769 | .ndo_select_queue = ieee80211_netdev_select_queue, | |
770 | .ndo_get_stats64 = ieee80211_get_stats64, | |
771 | }; | |
1be7fe8d | 772 | |
80a915ec | 773 | static bool ieee80211_iftype_supports_hdr_offload(enum nl80211_iftype iftype) |
4b7afb52 FF |
774 | { |
775 | switch (iftype) { | |
776 | /* P2P GO and client are mapped to AP/STATION types */ | |
777 | case NL80211_IFTYPE_AP: | |
778 | case NL80211_IFTYPE_STATION: | |
779 | return true; | |
f64331d5 | 780 | default: |
4b7afb52 | 781 | return false; |
0d143fe1 | 782 | } |
4b7afb52 | 783 | } |
0d143fe1 | 784 | |
4b7afb52 FF |
785 | static bool ieee80211_set_sdata_offload_flags(struct ieee80211_sub_if_data *sdata) |
786 | { | |
787 | struct ieee80211_local *local = sdata->local; | |
788 | u32 flags; | |
965bedad | 789 | |
4b7afb52 | 790 | flags = sdata->vif.offload_flags; |
2b730daa | 791 | |
4b7afb52 | 792 | if (ieee80211_hw_check(&local->hw, SUPPORTS_TX_ENCAP_OFFLOAD) && |
80a915ec | 793 | ieee80211_iftype_supports_hdr_offload(sdata->vif.type)) { |
4b7afb52 | 794 | flags |= IEEE80211_OFFLOAD_ENCAP_ENABLED; |
2b730daa | 795 | |
4b7afb52 FF |
796 | if (!ieee80211_hw_check(&local->hw, SUPPORTS_TX_FRAG) && |
797 | local->hw.wiphy->frag_threshold != (u32)-1) | |
798 | flags &= ~IEEE80211_OFFLOAD_ENCAP_ENABLED; | |
2b730daa | 799 | |
4b7afb52 FF |
800 | if (local->monitors) |
801 | flags &= ~IEEE80211_OFFLOAD_ENCAP_ENABLED; | |
802 | } else { | |
803 | flags &= ~IEEE80211_OFFLOAD_ENCAP_ENABLED; | |
2b730daa | 804 | } |
0d143fe1 | 805 | |
80a915ec FF |
806 | if (ieee80211_hw_check(&local->hw, SUPPORTS_RX_DECAP_OFFLOAD) && |
807 | ieee80211_iftype_supports_hdr_offload(sdata->vif.type)) { | |
808 | flags |= IEEE80211_OFFLOAD_DECAP_ENABLED; | |
809 | ||
810 | if (local->monitors) | |
811 | flags &= ~IEEE80211_OFFLOAD_DECAP_ENABLED; | |
812 | } else { | |
813 | flags &= ~IEEE80211_OFFLOAD_DECAP_ENABLED; | |
814 | } | |
815 | ||
4b7afb52 FF |
816 | if (sdata->vif.offload_flags == flags) |
817 | return false; | |
818 | ||
819 | sdata->vif.offload_flags = flags; | |
80a915ec | 820 | ieee80211_check_fast_rx_iface(sdata); |
4b7afb52 | 821 | return true; |
0d143fe1 JB |
822 | } |
823 | ||
4b7afb52 | 824 | static void ieee80211_set_vif_encap_ops(struct ieee80211_sub_if_data *sdata) |
0d143fe1 | 825 | { |
4b7afb52 FF |
826 | struct ieee80211_local *local = sdata->local; |
827 | struct ieee80211_sub_if_data *bss = sdata; | |
828 | bool enabled; | |
34d4bc4d | 829 | |
4b7afb52 FF |
830 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { |
831 | if (!sdata->bss) | |
832 | return; | |
34d4bc4d | 833 | |
4b7afb52 FF |
834 | bss = container_of(sdata->bss, struct ieee80211_sub_if_data, u.ap); |
835 | } | |
34d4bc4d | 836 | |
4b7afb52 | 837 | if (!ieee80211_hw_check(&local->hw, SUPPORTS_TX_ENCAP_OFFLOAD) || |
80a915ec | 838 | !ieee80211_iftype_supports_hdr_offload(bss->vif.type)) |
4b7afb52 | 839 | return; |
34d4bc4d | 840 | |
4b7afb52 FF |
841 | enabled = bss->vif.offload_flags & IEEE80211_OFFLOAD_ENCAP_ENABLED; |
842 | if (sdata->wdev.use_4addr && | |
843 | !(bss->vif.offload_flags & IEEE80211_OFFLOAD_ENCAP_4ADDR)) | |
844 | enabled = false; | |
0d143fe1 | 845 | |
4b7afb52 FF |
846 | sdata->dev->netdev_ops = enabled ? &ieee80211_dataif_8023_ops : |
847 | &ieee80211_dataif_ops; | |
848 | } | |
c29acf20 | 849 | |
4b7afb52 FF |
850 | static void ieee80211_recalc_sdata_offload(struct ieee80211_sub_if_data *sdata) |
851 | { | |
852 | struct ieee80211_local *local = sdata->local; | |
853 | struct ieee80211_sub_if_data *vsdata; | |
352ffad6 | 854 | |
4b7afb52 FF |
855 | if (ieee80211_set_sdata_offload_flags(sdata)) { |
856 | drv_update_vif_offload(local, sdata); | |
857 | ieee80211_set_vif_encap_ops(sdata); | |
858 | } | |
0d143fe1 | 859 | |
4b7afb52 FF |
860 | list_for_each_entry(vsdata, &local->interfaces, list) { |
861 | if (vsdata->vif.type != NL80211_IFTYPE_AP_VLAN || | |
862 | vsdata->bss != &sdata->u.ap) | |
863 | continue; | |
af6b6374 | 864 | |
4b7afb52 | 865 | ieee80211_set_vif_encap_ops(vsdata); |
8ffcc704 | 866 | } |
4b7afb52 | 867 | } |
cd7760e6 | 868 | |
4b7afb52 FF |
869 | void ieee80211_recalc_offload(struct ieee80211_local *local) |
870 | { | |
871 | struct ieee80211_sub_if_data *sdata; | |
0d143fe1 | 872 | |
4b7afb52 FF |
873 | if (!ieee80211_hw_check(&local->hw, SUPPORTS_TX_ENCAP_OFFLOAD)) |
874 | return; | |
0d143fe1 | 875 | |
4b7afb52 | 876 | mutex_lock(&local->iflist_mtx); |
e3b90ca2 | 877 | |
4b7afb52 FF |
878 | list_for_each_entry(sdata, &local->interfaces, list) { |
879 | if (!ieee80211_sdata_running(sdata)) | |
880 | continue; | |
881 | ||
882 | ieee80211_recalc_sdata_offload(sdata); | |
f142c6b9 | 883 | } |
3ac64bee | 884 | |
4b7afb52 FF |
885 | mutex_unlock(&local->iflist_mtx); |
886 | } | |
0d143fe1 | 887 | |
4b7afb52 FF |
888 | void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata, |
889 | const int offset) | |
890 | { | |
891 | struct ieee80211_local *local = sdata->local; | |
892 | u32 flags = sdata->u.mntr.flags; | |
59af6928 | 893 | |
4b7afb52 FF |
894 | #define ADJUST(_f, _s) do { \ |
895 | if (flags & MONITOR_FLAG_##_f) \ | |
896 | local->fif_##_s += offset; \ | |
897 | } while (0) | |
04ecd257 | 898 | |
4b7afb52 FF |
899 | ADJUST(FCSFAIL, fcsfail); |
900 | ADJUST(PLCPFAIL, plcpfail); | |
901 | ADJUST(CONTROL, control); | |
902 | ADJUST(CONTROL, pspoll); | |
903 | ADJUST(OTHER_BSS, other_bss); | |
164eb02d | 904 | |
4b7afb52 FF |
905 | #undef ADJUST |
906 | } | |
907 | ||
908 | static void ieee80211_set_default_queues(struct ieee80211_sub_if_data *sdata) | |
909 | { | |
910 | struct ieee80211_local *local = sdata->local; | |
911 | int i; | |
912 | ||
913 | for (i = 0; i < IEEE80211_NUM_ACS; i++) { | |
914 | if (ieee80211_hw_check(&local->hw, QUEUE_CONTROL)) | |
915 | sdata->vif.hw_queue[i] = IEEE80211_INVAL_HW_QUEUE; | |
916 | else if (local->hw.queues >= IEEE80211_NUM_ACS) | |
917 | sdata->vif.hw_queue[i] = i; | |
918 | else | |
919 | sdata->vif.hw_queue[i] = 0; | |
164eb02d | 920 | } |
4b7afb52 FF |
921 | sdata->vif.cab_queue = IEEE80211_INVAL_HW_QUEUE; |
922 | } | |
164eb02d | 923 | |
4b7afb52 FF |
924 | int ieee80211_add_virtual_monitor(struct ieee80211_local *local) |
925 | { | |
926 | struct ieee80211_sub_if_data *sdata; | |
927 | int ret; | |
0d143fe1 | 928 | |
4b7afb52 FF |
929 | if (!ieee80211_hw_check(&local->hw, WANT_MONITOR_VIF)) |
930 | return 0; | |
397a7a24 | 931 | |
4b7afb52 | 932 | ASSERT_RTNL(); |
0d143fe1 | 933 | |
4b7afb52 FF |
934 | if (local->monitor_sdata) |
935 | return 0; | |
0d143fe1 | 936 | |
4b7afb52 FF |
937 | sdata = kzalloc(sizeof(*sdata) + local->hw.vif_data_size, GFP_KERNEL); |
938 | if (!sdata) | |
939 | return -ENOMEM; | |
0d143fe1 | 940 | |
4b7afb52 FF |
941 | /* set up data */ |
942 | sdata->local = local; | |
943 | sdata->vif.type = NL80211_IFTYPE_MONITOR; | |
944 | snprintf(sdata->name, IFNAMSIZ, "%s-monitor", | |
945 | wiphy_name(local->hw.wiphy)); | |
946 | sdata->wdev.iftype = NL80211_IFTYPE_MONITOR; | |
0d143fe1 | 947 | |
4b7afb52 | 948 | sdata->encrypt_headroom = IEEE80211_ENCRYPT_HEADROOM; |
167e33f4 | 949 | |
4b7afb52 | 950 | ieee80211_set_default_queues(sdata); |
167e33f4 | 951 | |
4b7afb52 FF |
952 | ret = drv_add_interface(local, sdata); |
953 | if (WARN_ON(ret)) { | |
954 | /* ok .. stupid driver, it asked for this! */ | |
955 | kfree(sdata); | |
956 | return ret; | |
957 | } | |
958 | ||
bdeca45a BA |
959 | set_bit(SDATA_STATE_RUNNING, &sdata->state); |
960 | ||
4b7afb52 FF |
961 | ret = ieee80211_check_queues(sdata, NL80211_IFTYPE_MONITOR); |
962 | if (ret) { | |
963 | kfree(sdata); | |
964 | return ret; | |
0d143fe1 JB |
965 | } |
966 | ||
4b7afb52 FF |
967 | mutex_lock(&local->iflist_mtx); |
968 | rcu_assign_pointer(local->monitor_sdata, sdata); | |
969 | mutex_unlock(&local->iflist_mtx); | |
970 | ||
971 | mutex_lock(&local->mtx); | |
972 | ret = ieee80211_vif_use_channel(sdata, &local->monitor_chandef, | |
973 | IEEE80211_CHANCTX_EXCLUSIVE); | |
974 | mutex_unlock(&local->mtx); | |
975 | if (ret) { | |
976 | mutex_lock(&local->iflist_mtx); | |
977 | RCU_INIT_POINTER(local->monitor_sdata, NULL); | |
978 | mutex_unlock(&local->iflist_mtx); | |
979 | synchronize_net(); | |
980 | drv_remove_interface(local, sdata); | |
981 | kfree(sdata); | |
982 | return ret; | |
5061b0c2 | 983 | } |
075e0847 | 984 | |
4b7afb52 FF |
985 | skb_queue_head_init(&sdata->skb_queue); |
986 | INIT_WORK(&sdata->work, ieee80211_iface_work); | |
53168215 | 987 | |
4b7afb52 FF |
988 | return 0; |
989 | } | |
ba8c3d6f | 990 | |
4b7afb52 FF |
991 | void ieee80211_del_virtual_monitor(struct ieee80211_local *local) |
992 | { | |
993 | struct ieee80211_sub_if_data *sdata; | |
b2c0958b | 994 | |
4b7afb52 FF |
995 | if (!ieee80211_hw_check(&local->hw, WANT_MONITOR_VIF)) |
996 | return; | |
5c21e810 | 997 | |
4b7afb52 FF |
998 | ASSERT_RTNL(); |
999 | ||
1000 | mutex_lock(&local->iflist_mtx); | |
1001 | ||
1002 | sdata = rcu_dereference_protected(local->monitor_sdata, | |
1003 | lockdep_is_held(&local->iflist_mtx)); | |
1004 | if (!sdata) { | |
1005 | mutex_unlock(&local->iflist_mtx); | |
b2c0958b JB |
1006 | return; |
1007 | } | |
1008 | ||
4b7afb52 FF |
1009 | RCU_INIT_POINTER(local->monitor_sdata, NULL); |
1010 | mutex_unlock(&local->iflist_mtx); | |
1011 | ||
1012 | synchronize_net(); | |
1013 | ||
1014 | mutex_lock(&local->mtx); | |
1015 | ieee80211_vif_release_channel(sdata); | |
1016 | mutex_unlock(&local->mtx); | |
1017 | ||
1018 | drv_remove_interface(local, sdata); | |
1019 | ||
1020 | kfree(sdata); | |
1021 | } | |
1022 | ||
1023 | /* | |
1024 | * NOTE: Be very careful when changing this function, it must NOT return | |
1025 | * an error on interface type changes that have been pre-checked, so most | |
1026 | * checks should be in ieee80211_check_concurrent_iface. | |
1027 | */ | |
1028 | int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up) | |
1029 | { | |
1030 | struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); | |
1031 | struct net_device *dev = wdev->netdev; | |
1032 | struct ieee80211_local *local = sdata->local; | |
4b7afb52 FF |
1033 | u32 changed = 0; |
1034 | int res; | |
1035 | u32 hw_reconf_flags = 0; | |
1036 | ||
b2c0958b | 1037 | switch (sdata->vif.type) { |
4b7afb52 FF |
1038 | case NL80211_IFTYPE_AP_VLAN: { |
1039 | struct ieee80211_sub_if_data *master; | |
1040 | ||
1041 | if (!sdata->bss) | |
1042 | return -ENOLINK; | |
b2c0958b JB |
1043 | |
1044 | mutex_lock(&local->mtx); | |
4b7afb52 | 1045 | list_add(&sdata->u.vlan.list, &sdata->bss->vlans); |
b2c0958b | 1046 | mutex_unlock(&local->mtx); |
31eba5bc | 1047 | |
4b7afb52 FF |
1048 | master = container_of(sdata->bss, |
1049 | struct ieee80211_sub_if_data, u.ap); | |
1050 | sdata->control_port_protocol = | |
1051 | master->control_port_protocol; | |
1052 | sdata->control_port_no_encrypt = | |
1053 | master->control_port_no_encrypt; | |
1054 | sdata->control_port_over_nl80211 = | |
1055 | master->control_port_over_nl80211; | |
1056 | sdata->control_port_no_preauth = | |
1057 | master->control_port_no_preauth; | |
1058 | sdata->vif.cab_queue = master->vif.cab_queue; | |
1059 | memcpy(sdata->vif.hw_queue, master->vif.hw_queue, | |
1060 | sizeof(sdata->vif.hw_queue)); | |
1061 | sdata->vif.bss_conf.chandef = master->vif.bss_conf.chandef; | |
b2c0958b | 1062 | |
4b7afb52 FF |
1063 | mutex_lock(&local->key_mtx); |
1064 | sdata->crypto_tx_tailroom_needed_cnt += | |
1065 | master->crypto_tx_tailroom_needed_cnt; | |
1066 | mutex_unlock(&local->key_mtx); | |
b2c0958b | 1067 | |
4b7afb52 FF |
1068 | break; |
1069 | } | |
1070 | case NL80211_IFTYPE_AP: | |
1071 | sdata->bss = &sdata->u.ap; | |
1072 | break; | |
1073 | case NL80211_IFTYPE_MESH_POINT: | |
1074 | case NL80211_IFTYPE_STATION: | |
1075 | case NL80211_IFTYPE_MONITOR: | |
1076 | case NL80211_IFTYPE_ADHOC: | |
1077 | case NL80211_IFTYPE_P2P_DEVICE: | |
1078 | case NL80211_IFTYPE_OCB: | |
1079 | case NL80211_IFTYPE_NAN: | |
1080 | /* no special treatment */ | |
1081 | break; | |
1082 | case NL80211_IFTYPE_UNSPECIFIED: | |
1083 | case NUM_NL80211_IFTYPES: | |
1084 | case NL80211_IFTYPE_P2P_CLIENT: | |
1085 | case NL80211_IFTYPE_P2P_GO: | |
70d9c599 | 1086 | case NL80211_IFTYPE_WDS: |
4b7afb52 FF |
1087 | /* cannot happen */ |
1088 | WARN_ON(1); | |
1089 | break; | |
1090 | } | |
46238845 | 1091 | |
b2c0958b | 1092 | if (local->open_count == 0) { |
4b7afb52 FF |
1093 | res = drv_start(local); |
1094 | if (res) | |
1095 | goto err_del_bss; | |
1096 | /* we're brought up, everything changes */ | |
1097 | hw_reconf_flags = ~0; | |
1098 | ieee80211_led_radio(local, true); | |
1099 | ieee80211_mod_tpt_led_trig(local, | |
1100 | IEEE80211_TPT_LEDTRIG_FL_RADIO, 0); | |
b2c0958b JB |
1101 | } |
1102 | ||
4b7afb52 FF |
1103 | /* |
1104 | * Copy the hopefully now-present MAC address to | |
1105 | * this interface, if it has the special null one. | |
1106 | */ | |
1107 | if (dev && is_zero_ether_addr(dev->dev_addr)) { | |
1108 | memcpy(dev->dev_addr, | |
1109 | local->hw.wiphy->perm_addr, | |
1110 | ETH_ALEN); | |
1111 | memcpy(dev->perm_addr, dev->dev_addr, ETH_ALEN); | |
34d4bc4d | 1112 | |
4b7afb52 FF |
1113 | if (!is_valid_ether_addr(dev->dev_addr)) { |
1114 | res = -EADDRNOTAVAIL; | |
1115 | goto err_stop; | |
1116 | } | |
1117 | } | |
34d4bc4d | 1118 | |
4b7afb52 FF |
1119 | switch (sdata->vif.type) { |
1120 | case NL80211_IFTYPE_AP_VLAN: | |
1121 | /* no need to tell driver, but set carrier and chanctx */ | |
1122 | if (rtnl_dereference(sdata->bss->beacon)) { | |
1123 | ieee80211_vif_vlan_copy_chanctx(sdata); | |
1124 | netif_carrier_on(dev); | |
1125 | ieee80211_set_vif_encap_ops(sdata); | |
1126 | } else { | |
1127 | netif_carrier_off(dev); | |
1128 | } | |
1129 | break; | |
1130 | case NL80211_IFTYPE_MONITOR: | |
1131 | if (sdata->u.mntr.flags & MONITOR_FLAG_COOK_FRAMES) { | |
1132 | local->cooked_mntrs++; | |
1133 | break; | |
1134 | } | |
5061b0c2 | 1135 | |
4b7afb52 FF |
1136 | if (sdata->u.mntr.flags & MONITOR_FLAG_ACTIVE) { |
1137 | res = drv_add_interface(local, sdata); | |
1138 | if (res) | |
1139 | goto err_stop; | |
1140 | } else if (local->monitors == 0 && local->open_count == 0) { | |
1141 | res = ieee80211_add_virtual_monitor(local); | |
1142 | if (res) | |
1143 | goto err_stop; | |
1144 | } | |
0d143fe1 | 1145 | |
4b7afb52 FF |
1146 | /* must be before the call to ieee80211_configure_filter */ |
1147 | local->monitors++; | |
1148 | if (local->monitors == 1) { | |
1149 | local->hw.conf.flags |= IEEE80211_CONF_MONITOR; | |
1150 | hw_reconf_flags |= IEEE80211_CONF_CHANGE_MONITOR; | |
1151 | } | |
0d143fe1 | 1152 | |
4b7afb52 FF |
1153 | ieee80211_adjust_monitor_flags(sdata, 1); |
1154 | ieee80211_configure_filter(local); | |
1155 | ieee80211_recalc_offload(local); | |
1156 | mutex_lock(&local->mtx); | |
1157 | ieee80211_recalc_idle(local); | |
1158 | mutex_unlock(&local->mtx); | |
0d143fe1 | 1159 | |
4b7afb52 FF |
1160 | netif_carrier_on(dev); |
1161 | break; | |
1162 | default: | |
1163 | if (coming_up) { | |
1164 | ieee80211_del_virtual_monitor(local); | |
1165 | ieee80211_set_sdata_offload_flags(sdata); | |
0d143fe1 | 1166 | |
4b7afb52 FF |
1167 | res = drv_add_interface(local, sdata); |
1168 | if (res) | |
1169 | goto err_stop; | |
0d143fe1 | 1170 | |
4b7afb52 FF |
1171 | ieee80211_set_vif_encap_ops(sdata); |
1172 | res = ieee80211_check_queues(sdata, | |
1173 | ieee80211_vif_type_p2p(&sdata->vif)); | |
1174 | if (res) | |
1175 | goto err_del_interface; | |
1176 | } | |
f0706e82 | 1177 | |
4b7afb52 FF |
1178 | if (sdata->vif.type == NL80211_IFTYPE_AP) { |
1179 | local->fif_pspoll++; | |
1180 | local->fif_probe_req++; | |
75636525 | 1181 | |
4b7afb52 FF |
1182 | ieee80211_configure_filter(local); |
1183 | } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { | |
1184 | local->fif_probe_req++; | |
1185 | } | |
aee14ceb | 1186 | |
4b7afb52 FF |
1187 | if (sdata->vif.probe_req_reg) |
1188 | drv_config_iface_filter(local, sdata, | |
1189 | FIF_PROBE_REQ, | |
1190 | FIF_PROBE_REQ); | |
11a843b7 | 1191 | |
4b7afb52 FF |
1192 | if (sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE && |
1193 | sdata->vif.type != NL80211_IFTYPE_NAN) | |
1194 | changed |= ieee80211_reset_erp_info(sdata); | |
1195 | ieee80211_bss_info_change_notify(sdata, changed); | |
f0706e82 | 1196 | |
4b7afb52 FF |
1197 | switch (sdata->vif.type) { |
1198 | case NL80211_IFTYPE_STATION: | |
1199 | case NL80211_IFTYPE_ADHOC: | |
1200 | case NL80211_IFTYPE_AP: | |
1201 | case NL80211_IFTYPE_MESH_POINT: | |
1202 | case NL80211_IFTYPE_OCB: | |
1203 | netif_carrier_off(dev); | |
1204 | break; | |
4b7afb52 FF |
1205 | case NL80211_IFTYPE_P2P_DEVICE: |
1206 | case NL80211_IFTYPE_NAN: | |
1207 | break; | |
1208 | default: | |
1209 | /* not reached */ | |
1210 | WARN_ON(1); | |
1211 | } | |
f142c6b9 | 1212 | |
4b7afb52 FF |
1213 | /* |
1214 | * Set default queue parameters so drivers don't | |
1215 | * need to initialise the hardware if the hardware | |
1216 | * doesn't start up with sane defaults. | |
1217 | * Enable QoS for anything but station interfaces. | |
1218 | */ | |
1219 | ieee80211_set_wmm_default(sdata, true, | |
1220 | sdata->vif.type != NL80211_IFTYPE_STATION); | |
1221 | } | |
cf0277e7 | 1222 | |
4b7afb52 | 1223 | set_bit(SDATA_STATE_RUNNING, &sdata->state); |
5a490510 | 1224 | |
4b7afb52 | 1225 | switch (sdata->vif.type) { |
4b7afb52 FF |
1226 | case NL80211_IFTYPE_P2P_DEVICE: |
1227 | rcu_assign_pointer(local->p2p_sdata, sdata); | |
1228 | break; | |
1229 | case NL80211_IFTYPE_MONITOR: | |
1230 | if (sdata->u.mntr.flags & MONITOR_FLAG_COOK_FRAMES) | |
1231 | break; | |
1232 | list_add_tail_rcu(&sdata->u.mntr.list, &local->mon_list); | |
1233 | break; | |
1234 | default: | |
1235 | break; | |
5a490510 | 1236 | } |
5a490510 | 1237 | |
4b7afb52 FF |
1238 | /* |
1239 | * set_multicast_list will be invoked by the networking core | |
1240 | * which will check whether any increments here were done in | |
1241 | * error and sync them down to the hardware as filter flags. | |
1242 | */ | |
1243 | if (sdata->flags & IEEE80211_SDATA_ALLMULTI) | |
1244 | atomic_inc(&local->iff_allmultis); | |
587e729e | 1245 | |
4b7afb52 FF |
1246 | if (coming_up) |
1247 | local->open_count++; | |
cf0277e7 | 1248 | |
4b7afb52 FF |
1249 | if (hw_reconf_flags) |
1250 | ieee80211_hw_config(local, hw_reconf_flags); | |
cf0277e7 | 1251 | |
4b7afb52 | 1252 | ieee80211_recalc_ps(local); |
cb17ed29 | 1253 | |
4b7afb52 FF |
1254 | if (sdata->vif.type == NL80211_IFTYPE_MONITOR || |
1255 | sdata->vif.type == NL80211_IFTYPE_AP_VLAN || | |
1256 | local->ops->wake_tx_queue) { | |
1257 | /* XXX: for AP_VLAN, actually track AP queues */ | |
1258 | if (dev) | |
1259 | netif_tx_start_all_queues(dev); | |
1260 | } else if (dev) { | |
1261 | unsigned long flags; | |
1262 | int n_acs = IEEE80211_NUM_ACS; | |
1263 | int ac; | |
cf0277e7 | 1264 | |
4b7afb52 FF |
1265 | if (local->hw.queues < IEEE80211_NUM_ACS) |
1266 | n_acs = 1; | |
cf0277e7 | 1267 | |
4b7afb52 FF |
1268 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
1269 | if (sdata->vif.cab_queue == IEEE80211_INVAL_HW_QUEUE || | |
1270 | (local->queue_stop_reasons[sdata->vif.cab_queue] == 0 && | |
1271 | skb_queue_empty(&local->pending[sdata->vif.cab_queue]))) { | |
1272 | for (ac = 0; ac < n_acs; ac++) { | |
1273 | int ac_queue = sdata->vif.hw_queue[ac]; | |
cf0277e7 | 1274 | |
4b7afb52 FF |
1275 | if (local->queue_stop_reasons[ac_queue] == 0 && |
1276 | skb_queue_empty(&local->pending[ac_queue])) | |
1277 | netif_start_subqueue(dev, ac); | |
1278 | } | |
1279 | } | |
1280 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
1281 | } | |
587e729e | 1282 | |
4b7afb52 FF |
1283 | return 0; |
1284 | err_del_interface: | |
1285 | drv_remove_interface(local, sdata); | |
1286 | err_stop: | |
1287 | if (!local->open_count) | |
1288 | drv_stop(local); | |
1289 | err_del_bss: | |
1290 | sdata->bss = NULL; | |
1291 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { | |
1292 | mutex_lock(&local->mtx); | |
1293 | list_del(&sdata->u.vlan.list); | |
1294 | mutex_unlock(&local->mtx); | |
1295 | } | |
1296 | /* might already be clear but that doesn't matter */ | |
1297 | clear_bit(SDATA_STATE_RUNNING, &sdata->state); | |
1298 | return res; | |
1299 | } | |
50ff477a | 1300 | |
5a490510 JB |
1301 | static void ieee80211_if_free(struct net_device *dev) |
1302 | { | |
1303 | free_percpu(dev->tstats); | |
5a490510 JB |
1304 | } |
1305 | ||
587e729e JB |
1306 | static void ieee80211_if_setup(struct net_device *dev) |
1307 | { | |
1308 | ether_setup(dev); | |
550fd08c | 1309 | dev->priv_flags &= ~IFF_TX_SKB_SHARING; |
587e729e | 1310 | dev->netdev_ops = &ieee80211_dataif_ops; |
cf124db5 DM |
1311 | dev->needs_free_netdev = true; |
1312 | dev->priv_destructor = ieee80211_if_free; | |
587e729e JB |
1313 | } |
1314 | ||
80a83cfc MK |
1315 | static void ieee80211_if_setup_no_queue(struct net_device *dev) |
1316 | { | |
1317 | ieee80211_if_setup(dev); | |
1318 | dev->priv_flags |= IFF_NO_QUEUE; | |
1319 | } | |
1320 | ||
1fa57d01 JB |
1321 | static void ieee80211_iface_work(struct work_struct *work) |
1322 | { | |
1323 | struct ieee80211_sub_if_data *sdata = | |
1324 | container_of(work, struct ieee80211_sub_if_data, work); | |
1325 | struct ieee80211_local *local = sdata->local; | |
1326 | struct sk_buff *skb; | |
344eec67 | 1327 | struct sta_info *sta; |
1fa57d01 JB |
1328 | |
1329 | if (!ieee80211_sdata_running(sdata)) | |
1330 | return; | |
1331 | ||
fc58c47e | 1332 | if (test_bit(SCAN_SW_SCANNING, &local->scanning)) |
1fa57d01 JB |
1333 | return; |
1334 | ||
4afaff17 | 1335 | if (!ieee80211_can_run_worker(local)) |
1fa57d01 JB |
1336 | return; |
1337 | ||
1338 | /* first process frames */ | |
1339 | while ((skb = skb_dequeue(&sdata->skb_queue))) { | |
bed7ee6e JB |
1340 | struct ieee80211_mgmt *mgmt = (void *)skb->data; |
1341 | ||
261e411b | 1342 | kcov_remote_start_common(skb_get_kcov_handle(skb)); |
699cb58c JB |
1343 | if (ieee80211_is_action(mgmt->frame_control) && |
1344 | mgmt->u.action.category == WLAN_CATEGORY_BACK) { | |
bed7ee6e | 1345 | int len = skb->len; |
bed7ee6e | 1346 | |
a93e3644 | 1347 | mutex_lock(&local->sta_mtx); |
875ae5f6 | 1348 | sta = sta_info_get_bss(sdata, mgmt->sa); |
bed7ee6e JB |
1349 | if (sta) { |
1350 | switch (mgmt->u.action.u.addba_req.action_code) { | |
1351 | case WLAN_ACTION_ADDBA_REQ: | |
1352 | ieee80211_process_addba_request( | |
1353 | local, sta, mgmt, len); | |
1354 | break; | |
1355 | case WLAN_ACTION_ADDBA_RESP: | |
1356 | ieee80211_process_addba_resp(local, sta, | |
1357 | mgmt, len); | |
1358 | break; | |
1359 | case WLAN_ACTION_DELBA: | |
1360 | ieee80211_process_delba(sdata, sta, | |
1361 | mgmt, len); | |
1362 | break; | |
1363 | default: | |
1364 | WARN_ON(1); | |
1365 | break; | |
1366 | } | |
1367 | } | |
a93e3644 | 1368 | mutex_unlock(&local->sta_mtx); |
23a1f8d4 SS |
1369 | } else if (ieee80211_is_action(mgmt->frame_control) && |
1370 | mgmt->u.action.category == WLAN_CATEGORY_VHT) { | |
1371 | switch (mgmt->u.action.u.vht_group_notif.action_code) { | |
d2941df8 JB |
1372 | case WLAN_VHT_ACTION_OPMODE_NOTIF: { |
1373 | struct ieee80211_rx_status *status; | |
1374 | enum nl80211_band band; | |
1375 | u8 opmode; | |
1376 | ||
1377 | status = IEEE80211_SKB_RXCB(skb); | |
1378 | band = status->band; | |
1379 | opmode = mgmt->u.action.u.vht_opmode_notif.operating_mode; | |
1380 | ||
1381 | mutex_lock(&local->sta_mtx); | |
1382 | sta = sta_info_get_bss(sdata, mgmt->sa); | |
1383 | ||
1384 | if (sta) | |
1385 | ieee80211_vht_handle_opmode(sdata, sta, | |
1386 | opmode, | |
1387 | band); | |
1388 | ||
1389 | mutex_unlock(&local->sta_mtx); | |
1390 | break; | |
1391 | } | |
23a1f8d4 SS |
1392 | case WLAN_VHT_ACTION_GROUPID_MGMT: |
1393 | ieee80211_process_mu_groups(sdata, mgmt); | |
1394 | break; | |
1395 | default: | |
1396 | WARN_ON(1); | |
1397 | break; | |
1398 | } | |
09a740ce TP |
1399 | } else if (ieee80211_is_ext(mgmt->frame_control)) { |
1400 | if (sdata->vif.type == NL80211_IFTYPE_STATION) | |
1401 | ieee80211_sta_rx_queued_ext(sdata, skb); | |
1402 | else | |
1403 | WARN_ON(1); | |
344eec67 JB |
1404 | } else if (ieee80211_is_data_qos(mgmt->frame_control)) { |
1405 | struct ieee80211_hdr *hdr = (void *)mgmt; | |
1406 | /* | |
1407 | * So the frame isn't mgmt, but frame_control | |
1408 | * is at the right place anyway, of course, so | |
1409 | * the if statement is correct. | |
1410 | * | |
1411 | * Warn if we have other data frame types here, | |
1412 | * they must not get here. | |
1413 | */ | |
1414 | WARN_ON(hdr->frame_control & | |
1415 | cpu_to_le16(IEEE80211_STYPE_NULLFUNC)); | |
1416 | WARN_ON(!(hdr->seq_ctrl & | |
1417 | cpu_to_le16(IEEE80211_SCTL_FRAG))); | |
1418 | /* | |
1419 | * This was a fragment of a frame, received while | |
1420 | * a block-ack session was active. That cannot be | |
1421 | * right, so terminate the session. | |
1422 | */ | |
a93e3644 | 1423 | mutex_lock(&local->sta_mtx); |
875ae5f6 | 1424 | sta = sta_info_get_bss(sdata, mgmt->sa); |
344eec67 | 1425 | if (sta) { |
a1f2ba04 | 1426 | u16 tid = ieee80211_get_tid(hdr); |
344eec67 JB |
1427 | |
1428 | __ieee80211_stop_rx_ba_session( | |
1429 | sta, tid, WLAN_BACK_RECIPIENT, | |
53f73c09 JB |
1430 | WLAN_REASON_QSTA_REQUIRE_SETUP, |
1431 | true); | |
344eec67 | 1432 | } |
a93e3644 | 1433 | mutex_unlock(&local->sta_mtx); |
bed7ee6e | 1434 | } else switch (sdata->vif.type) { |
1fa57d01 JB |
1435 | case NL80211_IFTYPE_STATION: |
1436 | ieee80211_sta_rx_queued_mgmt(sdata, skb); | |
1437 | break; | |
1438 | case NL80211_IFTYPE_ADHOC: | |
1439 | ieee80211_ibss_rx_queued_mgmt(sdata, skb); | |
1440 | break; | |
1441 | case NL80211_IFTYPE_MESH_POINT: | |
1442 | if (!ieee80211_vif_is_mesh(&sdata->vif)) | |
1443 | break; | |
1444 | ieee80211_mesh_rx_queued_mgmt(sdata, skb); | |
1445 | break; | |
1446 | default: | |
1447 | WARN(1, "frame for unexpected interface type"); | |
1fa57d01 JB |
1448 | break; |
1449 | } | |
36b3a628 JB |
1450 | |
1451 | kfree_skb(skb); | |
261e411b | 1452 | kcov_remote_stop(); |
1fa57d01 JB |
1453 | } |
1454 | ||
1455 | /* then other type-dependent work */ | |
1456 | switch (sdata->vif.type) { | |
1457 | case NL80211_IFTYPE_STATION: | |
1458 | ieee80211_sta_work(sdata); | |
1459 | break; | |
1460 | case NL80211_IFTYPE_ADHOC: | |
1461 | ieee80211_ibss_work(sdata); | |
1462 | break; | |
1463 | case NL80211_IFTYPE_MESH_POINT: | |
1464 | if (!ieee80211_vif_is_mesh(&sdata->vif)) | |
1465 | break; | |
1466 | ieee80211_mesh_work(sdata); | |
1467 | break; | |
239281f8 RL |
1468 | case NL80211_IFTYPE_OCB: |
1469 | ieee80211_ocb_work(sdata); | |
1470 | break; | |
1fa57d01 JB |
1471 | default: |
1472 | break; | |
1473 | } | |
1474 | } | |
1475 | ||
04ecd257 JB |
1476 | static void ieee80211_recalc_smps_work(struct work_struct *work) |
1477 | { | |
1478 | struct ieee80211_sub_if_data *sdata = | |
1479 | container_of(work, struct ieee80211_sub_if_data, recalc_smps); | |
1480 | ||
1481 | ieee80211_recalc_smps(sdata); | |
1482 | } | |
1fa57d01 | 1483 | |
75636525 JB |
1484 | /* |
1485 | * Helper function to initialise an interface to a specific type. | |
1486 | */ | |
1487 | static void ieee80211_setup_sdata(struct ieee80211_sub_if_data *sdata, | |
05c914fe | 1488 | enum nl80211_iftype type) |
f0706e82 | 1489 | { |
239281f8 RL |
1490 | static const u8 bssid_wildcard[ETH_ALEN] = {0xff, 0xff, 0xff, |
1491 | 0xff, 0xff, 0xff}; | |
1492 | ||
75636525 JB |
1493 | /* clear type-dependent union */ |
1494 | memset(&sdata->u, 0, sizeof(sdata->u)); | |
1495 | ||
1496 | /* and set some type-dependent values */ | |
1497 | sdata->vif.type = type; | |
2ca27bcf | 1498 | sdata->vif.p2p = false; |
60719ffd | 1499 | sdata->wdev.iftype = type; |
75636525 | 1500 | |
a621fa4d JB |
1501 | sdata->control_port_protocol = cpu_to_be16(ETH_P_PAE); |
1502 | sdata->control_port_no_encrypt = false; | |
7f3f96ce MT |
1503 | sdata->control_port_over_nl80211 = false; |
1504 | sdata->control_port_no_preauth = false; | |
2475b1cc | 1505 | sdata->encrypt_headroom = IEEE80211_ENCRYPT_HEADROOM; |
d3a58df8 | 1506 | sdata->vif.bss_conf.idle = true; |
db6d9e9e | 1507 | sdata->vif.bss_conf.txpower = INT_MIN; /* unset */ |
a621fa4d | 1508 | |
b53be792 SW |
1509 | sdata->noack_map = 0; |
1510 | ||
f142c6b9 JB |
1511 | /* only monitor/p2p-device differ */ |
1512 | if (sdata->dev) { | |
1513 | sdata->dev->netdev_ops = &ieee80211_dataif_ops; | |
1514 | sdata->dev->type = ARPHRD_ETHER; | |
1515 | } | |
75636525 | 1516 | |
35f20c14 | 1517 | skb_queue_head_init(&sdata->skb_queue); |
1fa57d01 | 1518 | INIT_WORK(&sdata->work, ieee80211_iface_work); |
04ecd257 | 1519 | INIT_WORK(&sdata->recalc_smps, ieee80211_recalc_smps_work); |
73da7d5b | 1520 | INIT_WORK(&sdata->csa_finalize_work, ieee80211_csa_finalize_work); |
484298ad | 1521 | INIT_LIST_HEAD(&sdata->assigned_chanctx_list); |
e3afb920 | 1522 | INIT_LIST_HEAD(&sdata->reserved_chanctx_list); |
35f20c14 | 1523 | |
75636525 | 1524 | switch (type) { |
2ca27bcf JB |
1525 | case NL80211_IFTYPE_P2P_GO: |
1526 | type = NL80211_IFTYPE_AP; | |
1527 | sdata->vif.type = type; | |
1528 | sdata->vif.p2p = true; | |
fc0561dc | 1529 | fallthrough; |
05c914fe | 1530 | case NL80211_IFTYPE_AP: |
d012a605 | 1531 | skb_queue_head_init(&sdata->u.ap.ps.bc_buf); |
75636525 | 1532 | INIT_LIST_HEAD(&sdata->u.ap.vlans); |
ad2d223a | 1533 | sdata->vif.bss_conf.bssid = sdata->vif.addr; |
75636525 | 1534 | break; |
2ca27bcf JB |
1535 | case NL80211_IFTYPE_P2P_CLIENT: |
1536 | type = NL80211_IFTYPE_STATION; | |
1537 | sdata->vif.type = type; | |
1538 | sdata->vif.p2p = true; | |
fc0561dc | 1539 | fallthrough; |
05c914fe | 1540 | case NL80211_IFTYPE_STATION: |
ad2d223a | 1541 | sdata->vif.bss_conf.bssid = sdata->u.mgd.bssid; |
9c6bd790 | 1542 | ieee80211_sta_setup_sdata(sdata); |
472dbc45 | 1543 | break; |
6e0bd6c3 | 1544 | case NL80211_IFTYPE_OCB: |
239281f8 RL |
1545 | sdata->vif.bss_conf.bssid = bssid_wildcard; |
1546 | ieee80211_ocb_setup_sdata(sdata); | |
6e0bd6c3 | 1547 | break; |
46900298 | 1548 | case NL80211_IFTYPE_ADHOC: |
ad2d223a | 1549 | sdata->vif.bss_conf.bssid = sdata->u.ibss.bssid; |
46900298 JB |
1550 | ieee80211_ibss_setup_sdata(sdata); |
1551 | break; | |
05c914fe | 1552 | case NL80211_IFTYPE_MESH_POINT: |
75636525 JB |
1553 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
1554 | ieee80211_mesh_init_sdata(sdata); | |
1555 | break; | |
05c914fe | 1556 | case NL80211_IFTYPE_MONITOR: |
75636525 | 1557 | sdata->dev->type = ARPHRD_IEEE80211_RADIOTAP; |
587e729e | 1558 | sdata->dev->netdev_ops = &ieee80211_monitorif_ops; |
d8212184 | 1559 | sdata->u.mntr.flags = MONITOR_FLAG_CONTROL | |
75636525 JB |
1560 | MONITOR_FLAG_OTHER_BSS; |
1561 | break; | |
167e33f4 AB |
1562 | case NL80211_IFTYPE_NAN: |
1563 | idr_init(&sdata->u.nan.function_inst_ids); | |
1564 | spin_lock_init(&sdata->u.nan.func_lock); | |
1565 | sdata->vif.bss_conf.bssid = sdata->vif.addr; | |
1566 | break; | |
05c914fe | 1567 | case NL80211_IFTYPE_AP_VLAN: |
98104fde | 1568 | case NL80211_IFTYPE_P2P_DEVICE: |
ad2d223a | 1569 | sdata->vif.bss_conf.bssid = sdata->vif.addr; |
f142c6b9 | 1570 | break; |
05c914fe | 1571 | case NL80211_IFTYPE_UNSPECIFIED: |
70d9c599 | 1572 | case NL80211_IFTYPE_WDS: |
2e161f78 | 1573 | case NUM_NL80211_IFTYPES: |
c7976f52 | 1574 | WARN_ON(1); |
75636525 JB |
1575 | break; |
1576 | } | |
1577 | ||
1578 | ieee80211_debugfs_add_netdev(sdata); | |
1579 | } | |
1580 | ||
34d4bc4d JB |
1581 | static int ieee80211_runtime_change_iftype(struct ieee80211_sub_if_data *sdata, |
1582 | enum nl80211_iftype type) | |
1583 | { | |
1584 | struct ieee80211_local *local = sdata->local; | |
1585 | int ret, err; | |
2ca27bcf JB |
1586 | enum nl80211_iftype internal_type = type; |
1587 | bool p2p = false; | |
34d4bc4d JB |
1588 | |
1589 | ASSERT_RTNL(); | |
1590 | ||
1591 | if (!local->ops->change_interface) | |
1592 | return -EBUSY; | |
1593 | ||
1594 | switch (sdata->vif.type) { | |
1595 | case NL80211_IFTYPE_AP: | |
1596 | case NL80211_IFTYPE_STATION: | |
1597 | case NL80211_IFTYPE_ADHOC: | |
239281f8 | 1598 | case NL80211_IFTYPE_OCB: |
34d4bc4d JB |
1599 | /* |
1600 | * Could maybe also all others here? | |
1601 | * Just not sure how that interacts | |
1602 | * with the RX/config path e.g. for | |
1603 | * mesh. | |
1604 | */ | |
1605 | break; | |
1606 | default: | |
1607 | return -EBUSY; | |
1608 | } | |
1609 | ||
1610 | switch (type) { | |
1611 | case NL80211_IFTYPE_AP: | |
1612 | case NL80211_IFTYPE_STATION: | |
1613 | case NL80211_IFTYPE_ADHOC: | |
239281f8 | 1614 | case NL80211_IFTYPE_OCB: |
34d4bc4d JB |
1615 | /* |
1616 | * Could probably support everything | |
70d9c599 | 1617 | * but here. |
34d4bc4d JB |
1618 | */ |
1619 | break; | |
2ca27bcf JB |
1620 | case NL80211_IFTYPE_P2P_CLIENT: |
1621 | p2p = true; | |
1622 | internal_type = NL80211_IFTYPE_STATION; | |
1623 | break; | |
1624 | case NL80211_IFTYPE_P2P_GO: | |
1625 | p2p = true; | |
1626 | internal_type = NL80211_IFTYPE_AP; | |
1627 | break; | |
34d4bc4d JB |
1628 | default: |
1629 | return -EBUSY; | |
1630 | } | |
1631 | ||
2ca27bcf | 1632 | ret = ieee80211_check_concurrent_iface(sdata, internal_type); |
34d4bc4d JB |
1633 | if (ret) |
1634 | return ret; | |
1635 | ||
054c9939 JB |
1636 | ieee80211_stop_vif_queues(local, sdata, |
1637 | IEEE80211_QUEUE_STOP_REASON_IFTYPE_CHANGE); | |
1638 | synchronize_net(); | |
1639 | ||
34d4bc4d JB |
1640 | ieee80211_do_stop(sdata, false); |
1641 | ||
f142c6b9 | 1642 | ieee80211_teardown_sdata(sdata); |
34d4bc4d | 1643 | |
6aea26ce | 1644 | ieee80211_set_sdata_offload_flags(sdata); |
2ca27bcf | 1645 | ret = drv_change_interface(local, sdata, internal_type, p2p); |
34d4bc4d | 1646 | if (ret) |
a9865538 | 1647 | type = ieee80211_vif_type_p2p(&sdata->vif); |
34d4bc4d | 1648 | |
3a25a8c8 JB |
1649 | /* |
1650 | * Ignore return value here, there's not much we can do since | |
1651 | * the driver changed the interface type internally already. | |
1652 | * The warnings will hopefully make driver authors fix it :-) | |
1653 | */ | |
a9865538 | 1654 | ieee80211_check_queues(sdata, type); |
3a25a8c8 | 1655 | |
34d4bc4d | 1656 | ieee80211_setup_sdata(sdata, type); |
6aea26ce | 1657 | ieee80211_set_vif_encap_ops(sdata); |
34d4bc4d | 1658 | |
f142c6b9 | 1659 | err = ieee80211_do_open(&sdata->wdev, false); |
34d4bc4d JB |
1660 | WARN(err, "type change: do_open returned %d", err); |
1661 | ||
054c9939 JB |
1662 | ieee80211_wake_vif_queues(local, sdata, |
1663 | IEEE80211_QUEUE_STOP_REASON_IFTYPE_CHANGE); | |
34d4bc4d JB |
1664 | return ret; |
1665 | } | |
1666 | ||
f3947e2d | 1667 | int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, |
05c914fe | 1668 | enum nl80211_iftype type) |
75636525 | 1669 | { |
34d4bc4d JB |
1670 | int ret; |
1671 | ||
f3947e2d JB |
1672 | ASSERT_RTNL(); |
1673 | ||
2ca27bcf | 1674 | if (type == ieee80211_vif_type_p2p(&sdata->vif)) |
f3947e2d JB |
1675 | return 0; |
1676 | ||
34d4bc4d JB |
1677 | if (ieee80211_sdata_running(sdata)) { |
1678 | ret = ieee80211_runtime_change_iftype(sdata, type); | |
1679 | if (ret) | |
1680 | return ret; | |
1681 | } else { | |
1682 | /* Purge and reset type-dependent state. */ | |
f142c6b9 | 1683 | ieee80211_teardown_sdata(sdata); |
34d4bc4d JB |
1684 | ieee80211_setup_sdata(sdata, type); |
1685 | } | |
75636525 JB |
1686 | |
1687 | /* reset some values that shouldn't be kept across type changes */ | |
9bc383de JB |
1688 | if (type == NL80211_IFTYPE_STATION) |
1689 | sdata->u.mgd.use_4addr = false; | |
f3947e2d JB |
1690 | |
1691 | return 0; | |
f0706e82 JB |
1692 | } |
1693 | ||
fa9029f8 | 1694 | static void ieee80211_assign_perm_addr(struct ieee80211_local *local, |
f142c6b9 | 1695 | u8 *perm_addr, enum nl80211_iftype type) |
fa9029f8 JB |
1696 | { |
1697 | struct ieee80211_sub_if_data *sdata; | |
1698 | u64 mask, start, addr, val, inc; | |
1699 | u8 *m; | |
1700 | u8 tmp_addr[ETH_ALEN]; | |
1701 | int i; | |
1702 | ||
1703 | /* default ... something at least */ | |
f142c6b9 | 1704 | memcpy(perm_addr, local->hw.wiphy->perm_addr, ETH_ALEN); |
fa9029f8 JB |
1705 | |
1706 | if (is_zero_ether_addr(local->hw.wiphy->addr_mask) && | |
1707 | local->hw.wiphy->n_addresses <= 1) | |
1708 | return; | |
1709 | ||
fa9029f8 JB |
1710 | mutex_lock(&local->iflist_mtx); |
1711 | ||
1712 | switch (type) { | |
1713 | case NL80211_IFTYPE_MONITOR: | |
1714 | /* doesn't matter */ | |
1715 | break; | |
fa9029f8 JB |
1716 | case NL80211_IFTYPE_AP_VLAN: |
1717 | /* match up with an AP interface */ | |
1718 | list_for_each_entry(sdata, &local->interfaces, list) { | |
1719 | if (sdata->vif.type != NL80211_IFTYPE_AP) | |
1720 | continue; | |
f142c6b9 | 1721 | memcpy(perm_addr, sdata->vif.addr, ETH_ALEN); |
fa9029f8 JB |
1722 | break; |
1723 | } | |
1724 | /* keep default if no AP interface present */ | |
1725 | break; | |
6d71117a JB |
1726 | case NL80211_IFTYPE_P2P_CLIENT: |
1727 | case NL80211_IFTYPE_P2P_GO: | |
30686bf7 | 1728 | if (ieee80211_hw_check(&local->hw, P2P_DEV_ADDR_FOR_INTF)) { |
6d71117a JB |
1729 | list_for_each_entry(sdata, &local->interfaces, list) { |
1730 | if (sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE) | |
1731 | continue; | |
1732 | if (!ieee80211_sdata_running(sdata)) | |
1733 | continue; | |
1734 | memcpy(perm_addr, sdata->vif.addr, ETH_ALEN); | |
1735 | goto out_unlock; | |
1736 | } | |
1737 | } | |
fc0561dc | 1738 | fallthrough; |
fa9029f8 JB |
1739 | default: |
1740 | /* assign a new address if possible -- try n_addresses first */ | |
1741 | for (i = 0; i < local->hw.wiphy->n_addresses; i++) { | |
1742 | bool used = false; | |
1743 | ||
1744 | list_for_each_entry(sdata, &local->interfaces, list) { | |
496d7e8e | 1745 | if (ether_addr_equal(local->hw.wiphy->addresses[i].addr, |
1746 | sdata->vif.addr)) { | |
fa9029f8 JB |
1747 | used = true; |
1748 | break; | |
1749 | } | |
1750 | } | |
1751 | ||
1752 | if (!used) { | |
f142c6b9 | 1753 | memcpy(perm_addr, |
fa9029f8 JB |
1754 | local->hw.wiphy->addresses[i].addr, |
1755 | ETH_ALEN); | |
1756 | break; | |
1757 | } | |
1758 | } | |
1759 | ||
1760 | /* try mask if available */ | |
1761 | if (is_zero_ether_addr(local->hw.wiphy->addr_mask)) | |
1762 | break; | |
1763 | ||
1764 | m = local->hw.wiphy->addr_mask; | |
1765 | mask = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) | | |
1766 | ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) | | |
1767 | ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8); | |
1768 | ||
1769 | if (__ffs64(mask) + hweight64(mask) != fls64(mask)) { | |
1770 | /* not a contiguous mask ... not handled now! */ | |
bdcbd8e0 | 1771 | pr_info("not contiguous\n"); |
fa9029f8 JB |
1772 | break; |
1773 | } | |
1774 | ||
ac20976d HS |
1775 | /* |
1776 | * Pick address of existing interface in case user changed | |
1777 | * MAC address manually, default to perm_addr. | |
1778 | */ | |
fa9029f8 | 1779 | m = local->hw.wiphy->perm_addr; |
ac20976d HS |
1780 | list_for_each_entry(sdata, &local->interfaces, list) { |
1781 | if (sdata->vif.type == NL80211_IFTYPE_MONITOR) | |
1782 | continue; | |
1783 | m = sdata->vif.addr; | |
1784 | break; | |
1785 | } | |
fa9029f8 JB |
1786 | start = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) | |
1787 | ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) | | |
1788 | ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8); | |
1789 | ||
1790 | inc = 1ULL<<__ffs64(mask); | |
1791 | val = (start & mask); | |
1792 | addr = (start & ~mask) | (val & mask); | |
1793 | do { | |
1794 | bool used = false; | |
1795 | ||
1796 | tmp_addr[5] = addr >> 0*8; | |
1797 | tmp_addr[4] = addr >> 1*8; | |
1798 | tmp_addr[3] = addr >> 2*8; | |
1799 | tmp_addr[2] = addr >> 3*8; | |
1800 | tmp_addr[1] = addr >> 4*8; | |
1801 | tmp_addr[0] = addr >> 5*8; | |
1802 | ||
1803 | val += inc; | |
1804 | ||
1805 | list_for_each_entry(sdata, &local->interfaces, list) { | |
496d7e8e | 1806 | if (ether_addr_equal(tmp_addr, sdata->vif.addr)) { |
fa9029f8 JB |
1807 | used = true; |
1808 | break; | |
1809 | } | |
1810 | } | |
1811 | ||
1812 | if (!used) { | |
f142c6b9 | 1813 | memcpy(perm_addr, tmp_addr, ETH_ALEN); |
fa9029f8 JB |
1814 | break; |
1815 | } | |
1816 | addr = (start & ~mask) | (val & mask); | |
1817 | } while (addr != start); | |
1818 | ||
1819 | break; | |
1820 | } | |
1821 | ||
6d71117a | 1822 | out_unlock: |
fa9029f8 JB |
1823 | mutex_unlock(&local->iflist_mtx); |
1824 | } | |
1825 | ||
3e122be0 | 1826 | int ieee80211_if_add(struct ieee80211_local *local, const char *name, |
6bab2e19 | 1827 | unsigned char name_assign_type, |
84efbb84 | 1828 | struct wireless_dev **new_wdev, enum nl80211_iftype type, |
ee385855 | 1829 | struct vif_params *params) |
f0706e82 | 1830 | { |
f142c6b9 | 1831 | struct net_device *ndev = NULL; |
f0706e82 | 1832 | struct ieee80211_sub_if_data *sdata = NULL; |
ba8c3d6f | 1833 | struct txq_info *txqi; |
80a83cfc | 1834 | void (*if_setup)(struct net_device *dev); |
75636525 | 1835 | int ret, i; |
ded81f6b | 1836 | int txqs = 1; |
f0706e82 JB |
1837 | |
1838 | ASSERT_RTNL(); | |
75636525 | 1839 | |
708d50ed | 1840 | if (type == NL80211_IFTYPE_P2P_DEVICE || type == NL80211_IFTYPE_NAN) { |
f142c6b9 JB |
1841 | struct wireless_dev *wdev; |
1842 | ||
1843 | sdata = kzalloc(sizeof(*sdata) + local->hw.vif_data_size, | |
1844 | GFP_KERNEL); | |
1845 | if (!sdata) | |
1846 | return -ENOMEM; | |
1847 | wdev = &sdata->wdev; | |
1848 | ||
1849 | sdata->dev = NULL; | |
1850 | strlcpy(sdata->name, name, IFNAMSIZ); | |
1851 | ieee80211_assign_perm_addr(local, wdev->address, type); | |
1852 | memcpy(sdata->vif.addr, wdev->address, ETH_ALEN); | |
1853 | } else { | |
ba8c3d6f FF |
1854 | int size = ALIGN(sizeof(*sdata) + local->hw.vif_data_size, |
1855 | sizeof(void *)); | |
1856 | int txq_size = 0; | |
1857 | ||
79af1f86 JB |
1858 | if (local->ops->wake_tx_queue && |
1859 | type != NL80211_IFTYPE_AP_VLAN && | |
8105f9b8 FF |
1860 | (type != NL80211_IFTYPE_MONITOR || |
1861 | (params->flags & MONITOR_FLAG_ACTIVE))) | |
ba8c3d6f FF |
1862 | txq_size += sizeof(struct txq_info) + |
1863 | local->hw.txq_data_size; | |
1864 | ||
dbd50a85 | 1865 | if (local->ops->wake_tx_queue) { |
80a83cfc | 1866 | if_setup = ieee80211_if_setup_no_queue; |
dbd50a85 | 1867 | } else { |
80a83cfc | 1868 | if_setup = ieee80211_if_setup; |
dbd50a85 JB |
1869 | if (local->hw.queues >= IEEE80211_NUM_ACS) |
1870 | txqs = IEEE80211_NUM_ACS; | |
1871 | } | |
f142c6b9 | 1872 | |
ba8c3d6f | 1873 | ndev = alloc_netdev_mqs(size + txq_size, |
6bab2e19 | 1874 | name, name_assign_type, |
80a83cfc | 1875 | if_setup, txqs, 1); |
f142c6b9 JB |
1876 | if (!ndev) |
1877 | return -ENOMEM; | |
1f6e0baa JC |
1878 | |
1879 | if (!local->ops->wake_tx_queue && local->hw.wiphy->tx_queue_len) | |
1880 | ndev->tx_queue_len = local->hw.wiphy->tx_queue_len; | |
1881 | ||
f142c6b9 JB |
1882 | dev_net_set(ndev, wiphy_net(local->hw.wiphy)); |
1883 | ||
5a490510 JB |
1884 | ndev->tstats = netdev_alloc_pcpu_stats(struct pcpu_sw_netstats); |
1885 | if (!ndev->tstats) { | |
1886 | free_netdev(ndev); | |
1887 | return -ENOMEM; | |
1888 | } | |
1889 | ||
f142c6b9 JB |
1890 | ndev->needed_headroom = local->tx_headroom + |
1891 | 4*6 /* four MAC addresses */ | |
1892 | + 2 + 2 + 2 + 2 /* ctl, dur, seq, qos */ | |
1893 | + 6 /* mesh */ | |
1894 | + 8 /* rfc1042/bridge tunnel */ | |
1895 | - ETH_HLEN /* ethernet hard_header_len */ | |
1896 | + IEEE80211_ENCRYPT_HEADROOM; | |
1897 | ndev->needed_tailroom = IEEE80211_ENCRYPT_TAILROOM; | |
1898 | ||
1899 | ret = dev_alloc_name(ndev, ndev->name); | |
1900 | if (ret < 0) { | |
e6436be2 | 1901 | ieee80211_if_free(ndev); |
c7a61cba | 1902 | free_netdev(ndev); |
f142c6b9 JB |
1903 | return ret; |
1904 | } | |
1905 | ||
1906 | ieee80211_assign_perm_addr(local, ndev->perm_addr, type); | |
dd665d23 | 1907 | if (is_valid_ether_addr(params->macaddr)) |
b5dfae02 BG |
1908 | memcpy(ndev->dev_addr, params->macaddr, ETH_ALEN); |
1909 | else | |
1910 | memcpy(ndev->dev_addr, ndev->perm_addr, ETH_ALEN); | |
f142c6b9 JB |
1911 | SET_NETDEV_DEV(ndev, wiphy_dev(local->hw.wiphy)); |
1912 | ||
1913 | /* don't use IEEE80211_DEV_TO_SUB_IF -- it checks too much */ | |
1914 | sdata = netdev_priv(ndev); | |
1915 | ndev->ieee80211_ptr = &sdata->wdev; | |
1916 | memcpy(sdata->vif.addr, ndev->dev_addr, ETH_ALEN); | |
1917 | memcpy(sdata->name, ndev->name, IFNAMSIZ); | |
1918 | ||
ba8c3d6f FF |
1919 | if (txq_size) { |
1920 | txqi = netdev_priv(ndev) + size; | |
fa962b92 | 1921 | ieee80211_txq_init(sdata, NULL, txqi, 0); |
ba8c3d6f FF |
1922 | } |
1923 | ||
f142c6b9 JB |
1924 | sdata->dev = ndev; |
1925 | } | |
75636525 JB |
1926 | |
1927 | /* initialise type-independent data */ | |
f0706e82 | 1928 | sdata->wdev.wiphy = local->hw.wiphy; |
f0706e82 | 1929 | sdata->local = local; |
75636525 JB |
1930 | |
1931 | for (i = 0; i < IEEE80211_FRAGMENT_MAX; i++) | |
1932 | skb_queue_head_init(&sdata->fragments[i].skb_list); | |
1933 | ||
1934 | INIT_LIST_HEAD(&sdata->key_list); | |
1935 | ||
164eb02d SW |
1936 | INIT_DELAYED_WORK(&sdata->dfs_cac_timer_work, |
1937 | ieee80211_dfs_cac_timer_work); | |
8d1f7ecd JB |
1938 | INIT_DELAYED_WORK(&sdata->dec_tailroom_needed_wk, |
1939 | ieee80211_delayed_tailroom_dec); | |
97f97b1f | 1940 | |
57fbcce3 | 1941 | for (i = 0; i < NUM_NL80211_BANDS; i++) { |
37eb0b16 JM |
1942 | struct ieee80211_supported_band *sband; |
1943 | sband = local->hw.wiphy->bands[i]; | |
1944 | sdata->rc_rateidx_mask[i] = | |
1945 | sband ? (1 << sband->n_bitrates) - 1 : 0; | |
b119ad6e LB |
1946 | if (sband) { |
1947 | __le16 cap; | |
1948 | u16 *vht_rate_mask; | |
1949 | ||
19468413 SW |
1950 | memcpy(sdata->rc_rateidx_mcs_mask[i], |
1951 | sband->ht_cap.mcs.rx_mask, | |
1952 | sizeof(sdata->rc_rateidx_mcs_mask[i])); | |
b119ad6e LB |
1953 | |
1954 | cap = sband->vht_cap.vht_mcs.rx_mcs_map; | |
1955 | vht_rate_mask = sdata->rc_rateidx_vht_mcs_mask[i]; | |
1956 | ieee80211_get_vht_mask_from_cap(cap, vht_rate_mask); | |
1957 | } else { | |
19468413 SW |
1958 | memset(sdata->rc_rateidx_mcs_mask[i], 0, |
1959 | sizeof(sdata->rc_rateidx_mcs_mask[i])); | |
b119ad6e LB |
1960 | memset(sdata->rc_rateidx_vht_mcs_mask[i], 0, |
1961 | sizeof(sdata->rc_rateidx_vht_mcs_mask[i])); | |
1962 | } | |
37eb0b16 | 1963 | } |
75636525 | 1964 | |
3a25a8c8 JB |
1965 | ieee80211_set_default_queues(sdata); |
1966 | ||
1ea6f9c0 JB |
1967 | sdata->ap_power_level = IEEE80211_UNSET_POWER_LEVEL; |
1968 | sdata->user_power_level = local->user_power_level; | |
1969 | ||
2475b1cc MS |
1970 | sdata->encrypt_headroom = IEEE80211_ENCRYPT_HEADROOM; |
1971 | ||
75636525 JB |
1972 | /* setup type-dependent data */ |
1973 | ieee80211_setup_sdata(sdata, type); | |
f0706e82 | 1974 | |
f142c6b9 | 1975 | if (ndev) { |
dd665d23 JB |
1976 | ndev->ieee80211_ptr->use_4addr = params->use_4addr; |
1977 | if (type == NL80211_IFTYPE_STATION) | |
1978 | sdata->u.mgd.use_4addr = params->use_4addr; | |
9bc383de | 1979 | |
f142c6b9 | 1980 | ndev->features |= local->hw.netdev_features; |
07b83d2e JB |
1981 | ndev->hw_features |= ndev->features & |
1982 | MAC80211_SUPPORTED_FEATURES_TX; | |
72d78728 | 1983 | |
b7ffbd7e JB |
1984 | netdev_set_default_ethtool_ops(ndev, &ieee80211_ethtool_ops); |
1985 | ||
9c22b4a3 JW |
1986 | /* MTU range: 256 - 2304 */ |
1987 | ndev->min_mtu = 256; | |
06354665 | 1988 | ndev->max_mtu = local->hw.max_mtu; |
9c22b4a3 | 1989 | |
2fe8ef10 | 1990 | ret = cfg80211_register_netdevice(ndev); |
f142c6b9 | 1991 | if (ret) { |
cf124db5 | 1992 | free_netdev(ndev); |
f142c6b9 JB |
1993 | return ret; |
1994 | } | |
1995 | } | |
f0706e82 | 1996 | |
c771c9d8 | 1997 | mutex_lock(&local->iflist_mtx); |
79010420 | 1998 | list_add_tail_rcu(&sdata->list, &local->interfaces); |
c771c9d8 | 1999 | mutex_unlock(&local->iflist_mtx); |
79010420 | 2000 | |
84efbb84 JB |
2001 | if (new_wdev) |
2002 | *new_wdev = &sdata->wdev; | |
f0706e82 | 2003 | |
f0706e82 | 2004 | return 0; |
f0706e82 JB |
2005 | } |
2006 | ||
f698d856 | 2007 | void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata) |
f0706e82 | 2008 | { |
f0706e82 | 2009 | ASSERT_RTNL(); |
11a843b7 | 2010 | |
c771c9d8 | 2011 | mutex_lock(&sdata->local->iflist_mtx); |
75636525 | 2012 | list_del_rcu(&sdata->list); |
c771c9d8 JB |
2013 | mutex_unlock(&sdata->local->iflist_mtx); |
2014 | ||
f1267cf3 BP |
2015 | if (sdata->vif.txq) |
2016 | ieee80211_txq_purge(sdata->local, to_txq_info(sdata->vif.txq)); | |
2017 | ||
75636525 | 2018 | synchronize_rcu(); |
f142c6b9 | 2019 | |
2fe8ef10 JB |
2020 | cfg80211_unregister_wdev(&sdata->wdev); |
2021 | ||
2022 | if (!sdata->dev) { | |
835112b2 | 2023 | ieee80211_teardown_sdata(sdata); |
f142c6b9 JB |
2024 | kfree(sdata); |
2025 | } | |
2026 | } | |
2027 | ||
2028 | void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata) | |
2029 | { | |
2030 | if (WARN_ON_ONCE(!test_bit(SDATA_STATE_RUNNING, &sdata->state))) | |
2031 | return; | |
2032 | ieee80211_do_stop(sdata, true); | |
f0706e82 JB |
2033 | } |
2034 | ||
75636525 | 2035 | void ieee80211_remove_interfaces(struct ieee80211_local *local) |
f0706e82 | 2036 | { |
75636525 | 2037 | struct ieee80211_sub_if_data *sdata, *tmp; |
efe117ab | 2038 | LIST_HEAD(unreg_list); |
f142c6b9 | 2039 | LIST_HEAD(wdev_list); |
f0706e82 JB |
2040 | |
2041 | ASSERT_RTNL(); | |
2042 | ||
d8d9008c JB |
2043 | /* Before destroying the interfaces, make sure they're all stopped so |
2044 | * that the hardware is stopped. Otherwise, the driver might still be | |
2045 | * iterating the interfaces during the shutdown, e.g. from a worker | |
2046 | * or from RX processing or similar, and if it does so (using atomic | |
2047 | * iteration) while we're manipulating the list, the iteration will | |
2048 | * crash. | |
2049 | * | |
2050 | * After this, the hardware should be stopped and the driver should | |
2051 | * have stopped all of its activities, so that we can do RCU-unaware | |
2052 | * manipulations of the interface list below. | |
c8aa22db | 2053 | */ |
d8d9008c JB |
2054 | cfg80211_shutdown_all_interfaces(local->hw.wiphy); |
2055 | ||
2056 | WARN(local->open_count, "%s: open count remains %d\n", | |
2057 | wiphy_name(local->hw.wiphy), local->open_count); | |
c8aa22db | 2058 | |
a50e5fb8 SS |
2059 | ieee80211_txq_teardown_flows(local); |
2060 | ||
efe117ab | 2061 | mutex_lock(&local->iflist_mtx); |
75636525 JB |
2062 | list_for_each_entry_safe(sdata, tmp, &local->interfaces, list) { |
2063 | list_del(&sdata->list); | |
c771c9d8 | 2064 | |
f142c6b9 JB |
2065 | if (sdata->dev) |
2066 | unregister_netdevice_queue(sdata->dev, &unreg_list); | |
2067 | else | |
2068 | list_add(&sdata->list, &wdev_list); | |
f0706e82 | 2069 | } |
efe117ab | 2070 | mutex_unlock(&local->iflist_mtx); |
a05829a7 | 2071 | |
efe117ab | 2072 | unregister_netdevice_many(&unreg_list); |
f142c6b9 | 2073 | |
a05829a7 | 2074 | wiphy_lock(local->hw.wiphy); |
f142c6b9 JB |
2075 | list_for_each_entry_safe(sdata, tmp, &wdev_list, list) { |
2076 | list_del(&sdata->list); | |
2077 | cfg80211_unregister_wdev(&sdata->wdev); | |
2078 | kfree(sdata); | |
2079 | } | |
a05829a7 | 2080 | wiphy_unlock(local->hw.wiphy); |
f0706e82 | 2081 | } |
5cff20e6 | 2082 | |
47846c9b | 2083 | static int netdev_notify(struct notifier_block *nb, |
351638e7 | 2084 | unsigned long state, void *ptr) |
47846c9b | 2085 | { |
351638e7 | 2086 | struct net_device *dev = netdev_notifier_info_to_dev(ptr); |
47846c9b JB |
2087 | struct ieee80211_sub_if_data *sdata; |
2088 | ||
2089 | if (state != NETDEV_CHANGENAME) | |
8bd811aa | 2090 | return NOTIFY_DONE; |
47846c9b JB |
2091 | |
2092 | if (!dev->ieee80211_ptr || !dev->ieee80211_ptr->wiphy) | |
8bd811aa | 2093 | return NOTIFY_DONE; |
47846c9b JB |
2094 | |
2095 | if (dev->ieee80211_ptr->wiphy->privid != mac80211_wiphy_privid) | |
8bd811aa | 2096 | return NOTIFY_DONE; |
47846c9b JB |
2097 | |
2098 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
2f5265e6 | 2099 | memcpy(sdata->name, dev->name, IFNAMSIZ); |
47846c9b | 2100 | ieee80211_debugfs_rename_netdev(sdata); |
8bd811aa ZG |
2101 | |
2102 | return NOTIFY_OK; | |
47846c9b JB |
2103 | } |
2104 | ||
2105 | static struct notifier_block mac80211_netdev_notifier = { | |
2106 | .notifier_call = netdev_notify, | |
2107 | }; | |
2108 | ||
2109 | int ieee80211_iface_init(void) | |
2110 | { | |
2111 | return register_netdevice_notifier(&mac80211_netdev_notifier); | |
2112 | } | |
2113 | ||
2114 | void ieee80211_iface_exit(void) | |
2115 | { | |
2116 | unregister_netdevice_notifier(&mac80211_netdev_notifier); | |
2117 | } | |
72f15d53 MB |
2118 | |
2119 | void ieee80211_vif_inc_num_mcast(struct ieee80211_sub_if_data *sdata) | |
2120 | { | |
2121 | if (sdata->vif.type == NL80211_IFTYPE_AP) | |
2122 | atomic_inc(&sdata->u.ap.num_mcast_sta); | |
2123 | else if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) | |
2124 | atomic_inc(&sdata->u.vlan.num_mcast_sta); | |
2125 | } | |
2126 | ||
2127 | void ieee80211_vif_dec_num_mcast(struct ieee80211_sub_if_data *sdata) | |
2128 | { | |
2129 | if (sdata->vif.type == NL80211_IFTYPE_AP) | |
2130 | atomic_dec(&sdata->u.ap.num_mcast_sta); | |
2131 | else if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) | |
2132 | atomic_dec(&sdata->u.vlan.num_mcast_sta); | |
2133 | } |