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Commit | Line | Data |
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f0706e82 JB |
1 | /* |
2 | * Copyright 2002-2005, Instant802 Networks, Inc. | |
3 | * Copyright 2005-2006, Devicescape Software, Inc. | |
4 | * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License version 2 as | |
8 | * published by the Free Software Foundation. | |
9 | */ | |
10 | ||
11 | #include <net/mac80211.h> | |
f0706e82 JB |
12 | #include <linux/module.h> |
13 | #include <linux/init.h> | |
14 | #include <linux/netdevice.h> | |
15 | #include <linux/types.h> | |
16 | #include <linux/slab.h> | |
17 | #include <linux/skbuff.h> | |
18 | #include <linux/etherdevice.h> | |
19 | #include <linux/if_arp.h> | |
f0706e82 | 20 | #include <linux/rtnetlink.h> |
f0706e82 | 21 | #include <linux/bitmap.h> |
e8db0be1 | 22 | #include <linux/pm_qos.h> |
68542962 | 23 | #include <linux/inetdevice.h> |
881d966b | 24 | #include <net/net_namespace.h> |
f0706e82 | 25 | #include <net/cfg80211.h> |
a65240c1 | 26 | #include <net/addrconf.h> |
f0706e82 | 27 | |
f0706e82 | 28 | #include "ieee80211_i.h" |
24487981 | 29 | #include "driver-ops.h" |
2c8dccc7 | 30 | #include "rate.h" |
f7a92144 | 31 | #include "mesh.h" |
f0706e82 | 32 | #include "wep.h" |
2c8dccc7 | 33 | #include "led.h" |
e0eb6859 | 34 | #include "cfg.h" |
e9f207f0 | 35 | #include "debugfs.h" |
f0706e82 | 36 | |
0d143fe1 | 37 | void ieee80211_configure_filter(struct ieee80211_local *local) |
4150c572 | 38 | { |
3ac64bee | 39 | u64 mc; |
4150c572 JB |
40 | unsigned int changed_flags; |
41 | unsigned int new_flags = 0; | |
42 | ||
53918994 | 43 | if (atomic_read(&local->iff_promiscs)) |
4150c572 JB |
44 | new_flags |= FIF_PROMISC_IN_BSS; |
45 | ||
53918994 | 46 | if (atomic_read(&local->iff_allmultis)) |
4150c572 JB |
47 | new_flags |= FIF_ALLMULTI; |
48 | ||
8a690674 BG |
49 | if (local->monitors || test_bit(SCAN_SW_SCANNING, &local->scanning) || |
50 | test_bit(SCAN_ONCHANNEL_SCANNING, &local->scanning)) | |
8cc9a739 MW |
51 | new_flags |= FIF_BCN_PRBRESP_PROMISC; |
52 | ||
7be5086d JB |
53 | if (local->fif_probe_req || local->probe_req_reg) |
54 | new_flags |= FIF_PROBE_REQ; | |
55 | ||
8cc9a739 MW |
56 | if (local->fif_fcsfail) |
57 | new_flags |= FIF_FCSFAIL; | |
58 | ||
59 | if (local->fif_plcpfail) | |
60 | new_flags |= FIF_PLCPFAIL; | |
61 | ||
62 | if (local->fif_control) | |
63 | new_flags |= FIF_CONTROL; | |
64 | ||
65 | if (local->fif_other_bss) | |
66 | new_flags |= FIF_OTHER_BSS; | |
4150c572 | 67 | |
e3b90ca2 IP |
68 | if (local->fif_pspoll) |
69 | new_flags |= FIF_PSPOLL; | |
70 | ||
3ac64bee | 71 | spin_lock_bh(&local->filter_lock); |
4150c572 JB |
72 | changed_flags = local->filter_flags ^ new_flags; |
73 | ||
22bedad3 | 74 | mc = drv_prepare_multicast(local, &local->mc_list); |
3ac64bee JB |
75 | spin_unlock_bh(&local->filter_lock); |
76 | ||
4150c572 JB |
77 | /* be a bit nasty */ |
78 | new_flags |= (1<<31); | |
79 | ||
3ac64bee | 80 | drv_configure_filter(local, changed_flags, &new_flags, mc); |
4150c572 JB |
81 | |
82 | WARN_ON(new_flags & (1<<31)); | |
83 | ||
84 | local->filter_flags = new_flags & ~(1<<31); | |
85 | } | |
86 | ||
3ac64bee JB |
87 | static void ieee80211_reconfig_filter(struct work_struct *work) |
88 | { | |
89 | struct ieee80211_local *local = | |
90 | container_of(work, struct ieee80211_local, reconfig_filter); | |
91 | ||
92 | ieee80211_configure_filter(local); | |
93 | } | |
94 | ||
55de908a | 95 | static u32 ieee80211_hw_conf_chan(struct ieee80211_local *local) |
b2c258fb | 96 | { |
1ea6f9c0 | 97 | struct ieee80211_sub_if_data *sdata; |
675a0b04 | 98 | struct cfg80211_chan_def chandef = {}; |
55de908a | 99 | u32 changed = 0; |
e8975581 | 100 | int power; |
ffd2778b | 101 | u32 offchannel_flag; |
f0706e82 | 102 | |
ffd2778b | 103 | offchannel_flag = local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL; |
675a0b04 | 104 | |
7ca15a0a SW |
105 | if (local->scan_chandef.chan) { |
106 | chandef = local->scan_chandef; | |
b23b025f | 107 | } else if (local->tmp_channel) { |
675a0b04 KB |
108 | chandef.chan = local->tmp_channel; |
109 | chandef.width = NL80211_CHAN_WIDTH_20_NOHT; | |
110 | chandef.center_freq1 = chandef.chan->center_freq; | |
111 | } else | |
112 | chandef = local->_oper_chandef; | |
113 | ||
114 | WARN(!cfg80211_chandef_valid(&chandef), | |
115 | "control:%d MHz width:%d center: %d/%d MHz", | |
116 | chandef.chan->center_freq, chandef.width, | |
117 | chandef.center_freq1, chandef.center_freq2); | |
118 | ||
119 | if (!cfg80211_chandef_identical(&chandef, &local->_oper_chandef)) | |
b23b025f BG |
120 | local->hw.conf.flags |= IEEE80211_CONF_OFFCHANNEL; |
121 | else | |
122 | local->hw.conf.flags &= ~IEEE80211_CONF_OFFCHANNEL; | |
123 | ||
ffd2778b | 124 | offchannel_flag ^= local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL; |
f0706e82 | 125 | |
675a0b04 KB |
126 | if (offchannel_flag || |
127 | !cfg80211_chandef_identical(&local->hw.conf.chandef, | |
128 | &local->_oper_chandef)) { | |
129 | local->hw.conf.chandef = chandef; | |
e8975581 JB |
130 | changed |= IEEE80211_CONF_CHANGE_CHANNEL; |
131 | } | |
8318d78a | 132 | |
0f78231b JB |
133 | if (!conf_is_ht(&local->hw.conf)) { |
134 | /* | |
135 | * mac80211.h documents that this is only valid | |
136 | * when the channel is set to an HT type, and | |
137 | * that otherwise STATIC is used. | |
138 | */ | |
139 | local->hw.conf.smps_mode = IEEE80211_SMPS_STATIC; | |
140 | } else if (local->hw.conf.smps_mode != local->smps_mode) { | |
141 | local->hw.conf.smps_mode = local->smps_mode; | |
142 | changed |= IEEE80211_CONF_CHANGE_SMPS; | |
143 | } | |
144 | ||
0430c883 | 145 | power = ieee80211_chandef_max_power(&chandef); |
a8302de9 | 146 | |
1ea6f9c0 JB |
147 | rcu_read_lock(); |
148 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { | |
149 | if (!rcu_access_pointer(sdata->vif.chanctx_conf)) | |
150 | continue; | |
764152ff FF |
151 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) |
152 | continue; | |
1ea6f9c0 JB |
153 | power = min(power, sdata->vif.bss_conf.txpower); |
154 | } | |
155 | rcu_read_unlock(); | |
a8302de9 | 156 | |
e8975581 JB |
157 | if (local->hw.conf.power_level != power) { |
158 | changed |= IEEE80211_CONF_CHANGE_POWER; | |
159 | local->hw.conf.power_level = power; | |
160 | } | |
b2c258fb | 161 | |
55de908a JB |
162 | return changed; |
163 | } | |
164 | ||
165 | int ieee80211_hw_config(struct ieee80211_local *local, u32 changed) | |
166 | { | |
167 | int ret = 0; | |
168 | ||
169 | might_sleep(); | |
170 | ||
171 | if (!local->use_chanctx) | |
172 | changed |= ieee80211_hw_conf_chan(local); | |
173 | else | |
174 | changed &= ~(IEEE80211_CONF_CHANGE_CHANNEL | | |
175 | IEEE80211_CONF_CHANGE_POWER); | |
176 | ||
e8975581 | 177 | if (changed && local->open_count) { |
24487981 | 178 | ret = drv_config(local, changed); |
d73782fd | 179 | /* |
447107fb | 180 | * Goal: |
d73782fd JB |
181 | * HW reconfiguration should never fail, the driver has told |
182 | * us what it can support so it should live up to that promise. | |
447107fb RC |
183 | * |
184 | * Current status: | |
185 | * rfkill is not integrated with mac80211 and a | |
186 | * configuration command can thus fail if hardware rfkill | |
187 | * is enabled | |
188 | * | |
189 | * FIXME: integrate rfkill with mac80211 and then add this | |
190 | * WARN_ON() back | |
191 | * | |
d73782fd | 192 | */ |
447107fb | 193 | /* WARN_ON(ret); */ |
d73782fd | 194 | } |
f0706e82 | 195 | |
b2c258fb JB |
196 | return ret; |
197 | } | |
f0706e82 | 198 | |
471b3efd JB |
199 | void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, |
200 | u32 changed) | |
d9430a32 | 201 | { |
471b3efd JB |
202 | struct ieee80211_local *local = sdata->local; |
203 | ||
990baec0 | 204 | if (!changed || sdata->vif.type == NL80211_IFTYPE_AP_VLAN) |
471b3efd JB |
205 | return; |
206 | ||
12375ef9 | 207 | drv_bss_info_changed(local, sdata, &sdata->vif.bss_conf, changed); |
d9430a32 DD |
208 | } |
209 | ||
f698d856 | 210 | u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata) |
d9430a32 | 211 | { |
bda3933a JB |
212 | sdata->vif.bss_conf.use_cts_prot = false; |
213 | sdata->vif.bss_conf.use_short_preamble = false; | |
214 | sdata->vif.bss_conf.use_short_slot = false; | |
7a5158ef JB |
215 | return BSS_CHANGED_ERP_CTS_PROT | |
216 | BSS_CHANGED_ERP_PREAMBLE | | |
217 | BSS_CHANGED_ERP_SLOT; | |
d9430a32 DD |
218 | } |
219 | ||
f0706e82 JB |
220 | static void ieee80211_tasklet_handler(unsigned long data) |
221 | { | |
222 | struct ieee80211_local *local = (struct ieee80211_local *) data; | |
223 | struct sk_buff *skb; | |
f0706e82 JB |
224 | |
225 | while ((skb = skb_dequeue(&local->skb_queue)) || | |
226 | (skb = skb_dequeue(&local->skb_queue_unreliable))) { | |
227 | switch (skb->pkt_type) { | |
228 | case IEEE80211_RX_MSG: | |
51fb61e7 | 229 | /* Clear skb->pkt_type in order to not confuse kernel |
f0706e82 JB |
230 | * netstack. */ |
231 | skb->pkt_type = 0; | |
005e472b | 232 | ieee80211_rx(&local->hw, skb); |
f0706e82 JB |
233 | break; |
234 | case IEEE80211_TX_STATUS_MSG: | |
f0706e82 | 235 | skb->pkt_type = 0; |
005e472b | 236 | ieee80211_tx_status(&local->hw, skb); |
f0706e82 | 237 | break; |
f4ea83dd | 238 | default: |
5e3f3089 LF |
239 | WARN(1, "mac80211: Packet is of unknown type %d\n", |
240 | skb->pkt_type); | |
f0706e82 JB |
241 | dev_kfree_skb(skb); |
242 | break; | |
243 | } | |
244 | } | |
245 | } | |
246 | ||
f2753ddb JB |
247 | static void ieee80211_restart_work(struct work_struct *work) |
248 | { | |
249 | struct ieee80211_local *local = | |
250 | container_of(work, struct ieee80211_local, restart_work); | |
251 | ||
bc86863d SG |
252 | /* wait for scan work complete */ |
253 | flush_workqueue(local->workqueue); | |
254 | ||
d43c6b6e DS |
255 | WARN(test_bit(SCAN_HW_SCANNING, &local->scanning), |
256 | "%s called with hardware scan in progress\n", __func__); | |
bc86863d | 257 | |
f2753ddb | 258 | rtnl_lock(); |
4136c422 | 259 | ieee80211_scan_cancel(local); |
f2753ddb JB |
260 | ieee80211_reconfig(local); |
261 | rtnl_unlock(); | |
262 | } | |
263 | ||
264 | void ieee80211_restart_hw(struct ieee80211_hw *hw) | |
265 | { | |
266 | struct ieee80211_local *local = hw_to_local(hw); | |
267 | ||
b5878a2d JB |
268 | trace_api_restart_hw(local); |
269 | ||
b196d031 MB |
270 | wiphy_info(hw->wiphy, |
271 | "Hardware restart was requested\n"); | |
272 | ||
18145c69 | 273 | /* use this reason, ieee80211_reconfig will unblock it */ |
445ea4e8 JB |
274 | ieee80211_stop_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, |
275 | IEEE80211_QUEUE_STOP_REASON_SUSPEND); | |
f2753ddb | 276 | |
04800ada AN |
277 | /* |
278 | * Stop all Rx during the reconfig. We don't want state changes | |
279 | * or driver callbacks while this is in progress. | |
280 | */ | |
281 | local->in_reconfig = true; | |
282 | barrier(); | |
283 | ||
f2753ddb JB |
284 | schedule_work(&local->restart_work); |
285 | } | |
286 | EXPORT_SYMBOL(ieee80211_restart_hw); | |
287 | ||
26b36cfe | 288 | #ifdef CONFIG_INET |
2b2c009e JO |
289 | static int ieee80211_ifa_changed(struct notifier_block *nb, |
290 | unsigned long data, void *arg) | |
291 | { | |
292 | struct in_ifaddr *ifa = arg; | |
293 | struct ieee80211_local *local = | |
294 | container_of(nb, struct ieee80211_local, | |
295 | ifa_notifier); | |
296 | struct net_device *ndev = ifa->ifa_dev->dev; | |
297 | struct wireless_dev *wdev = ndev->ieee80211_ptr; | |
68542962 | 298 | struct in_device *idev; |
2b2c009e | 299 | struct ieee80211_sub_if_data *sdata; |
68542962 | 300 | struct ieee80211_bss_conf *bss_conf; |
2b2c009e | 301 | struct ieee80211_if_managed *ifmgd; |
68542962 | 302 | int c = 0; |
2b2c009e JO |
303 | |
304 | /* Make sure it's our interface that got changed */ | |
305 | if (!wdev) | |
306 | return NOTIFY_DONE; | |
307 | ||
308 | if (wdev->wiphy != local->hw.wiphy) | |
309 | return NOTIFY_DONE; | |
310 | ||
2b2c009e | 311 | sdata = IEEE80211_DEV_TO_SUB_IF(ndev); |
68542962 | 312 | bss_conf = &sdata->vif.bss_conf; |
2b2c009e JO |
313 | |
314 | /* ARP filtering is only supported in managed mode */ | |
315 | if (sdata->vif.type != NL80211_IFTYPE_STATION) | |
316 | return NOTIFY_DONE; | |
317 | ||
95ae6b22 | 318 | idev = __in_dev_get_rtnl(sdata->dev); |
68542962 JO |
319 | if (!idev) |
320 | return NOTIFY_DONE; | |
321 | ||
2b2c009e | 322 | ifmgd = &sdata->u.mgd; |
8d61ffa5 | 323 | sdata_lock(sdata); |
68542962 JO |
324 | |
325 | /* Copy the addresses to the bss_conf list */ | |
326 | ifa = idev->ifa_list; | |
0f19b41e JB |
327 | while (ifa) { |
328 | if (c < IEEE80211_BSS_ARP_ADDR_LIST_LEN) | |
329 | bss_conf->arp_addr_list[c] = ifa->ifa_address; | |
68542962 JO |
330 | ifa = ifa->ifa_next; |
331 | c++; | |
332 | } | |
333 | ||
68542962 JO |
334 | bss_conf->arp_addr_cnt = c; |
335 | ||
53d69c39 | 336 | /* Configure driver only if associated (which also implies it is up) */ |
0f19b41e | 337 | if (ifmgd->associated) |
68542962 JO |
338 | ieee80211_bss_info_change_notify(sdata, |
339 | BSS_CHANGED_ARP_FILTER); | |
68542962 | 340 | |
8d61ffa5 | 341 | sdata_unlock(sdata); |
2b2c009e JO |
342 | |
343 | return NOTIFY_DONE; | |
344 | } | |
26b36cfe | 345 | #endif |
2b2c009e | 346 | |
a65240c1 JB |
347 | #if IS_ENABLED(CONFIG_IPV6) |
348 | static int ieee80211_ifa6_changed(struct notifier_block *nb, | |
349 | unsigned long data, void *arg) | |
350 | { | |
351 | struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)arg; | |
352 | struct inet6_dev *idev = ifa->idev; | |
353 | struct net_device *ndev = ifa->idev->dev; | |
354 | struct ieee80211_local *local = | |
355 | container_of(nb, struct ieee80211_local, ifa6_notifier); | |
356 | struct wireless_dev *wdev = ndev->ieee80211_ptr; | |
357 | struct ieee80211_sub_if_data *sdata; | |
358 | ||
359 | /* Make sure it's our interface that got changed */ | |
360 | if (!wdev || wdev->wiphy != local->hw.wiphy) | |
361 | return NOTIFY_DONE; | |
362 | ||
363 | sdata = IEEE80211_DEV_TO_SUB_IF(ndev); | |
364 | ||
365 | /* | |
366 | * For now only support station mode. This is mostly because | |
367 | * doing AP would have to handle AP_VLAN in some way ... | |
368 | */ | |
369 | if (sdata->vif.type != NL80211_IFTYPE_STATION) | |
370 | return NOTIFY_DONE; | |
371 | ||
372 | drv_ipv6_addr_change(local, sdata, idev); | |
373 | ||
374 | return NOTIFY_DONE; | |
375 | } | |
376 | #endif | |
377 | ||
2e161f78 JB |
378 | /* There isn't a lot of sense in it, but you can transmit anything you like */ |
379 | static const struct ieee80211_txrx_stypes | |
380 | ieee80211_default_mgmt_stypes[NUM_NL80211_IFTYPES] = { | |
381 | [NL80211_IFTYPE_ADHOC] = { | |
382 | .tx = 0xffff, | |
3bfda62c WH |
383 | .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | |
384 | BIT(IEEE80211_STYPE_AUTH >> 4) | | |
41e31b8b AQ |
385 | BIT(IEEE80211_STYPE_DEAUTH >> 4) | |
386 | BIT(IEEE80211_STYPE_PROBE_REQ >> 4), | |
2e161f78 JB |
387 | }, |
388 | [NL80211_IFTYPE_STATION] = { | |
389 | .tx = 0xffff, | |
390 | .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | | |
391 | BIT(IEEE80211_STYPE_PROBE_REQ >> 4), | |
392 | }, | |
393 | [NL80211_IFTYPE_AP] = { | |
394 | .tx = 0xffff, | |
395 | .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) | | |
396 | BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) | | |
397 | BIT(IEEE80211_STYPE_PROBE_REQ >> 4) | | |
398 | BIT(IEEE80211_STYPE_DISASSOC >> 4) | | |
399 | BIT(IEEE80211_STYPE_AUTH >> 4) | | |
400 | BIT(IEEE80211_STYPE_DEAUTH >> 4) | | |
401 | BIT(IEEE80211_STYPE_ACTION >> 4), | |
402 | }, | |
403 | [NL80211_IFTYPE_AP_VLAN] = { | |
404 | /* copy AP */ | |
405 | .tx = 0xffff, | |
406 | .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) | | |
407 | BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) | | |
408 | BIT(IEEE80211_STYPE_PROBE_REQ >> 4) | | |
409 | BIT(IEEE80211_STYPE_DISASSOC >> 4) | | |
410 | BIT(IEEE80211_STYPE_AUTH >> 4) | | |
411 | BIT(IEEE80211_STYPE_DEAUTH >> 4) | | |
2ca27bcf JB |
412 | BIT(IEEE80211_STYPE_ACTION >> 4), |
413 | }, | |
414 | [NL80211_IFTYPE_P2P_CLIENT] = { | |
415 | .tx = 0xffff, | |
416 | .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | | |
417 | BIT(IEEE80211_STYPE_PROBE_REQ >> 4), | |
418 | }, | |
419 | [NL80211_IFTYPE_P2P_GO] = { | |
420 | .tx = 0xffff, | |
421 | .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) | | |
422 | BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) | | |
423 | BIT(IEEE80211_STYPE_PROBE_REQ >> 4) | | |
2e161f78 JB |
424 | BIT(IEEE80211_STYPE_DISASSOC >> 4) | |
425 | BIT(IEEE80211_STYPE_AUTH >> 4) | | |
426 | BIT(IEEE80211_STYPE_DEAUTH >> 4) | | |
427 | BIT(IEEE80211_STYPE_ACTION >> 4), | |
428 | }, | |
c7108a71 JC |
429 | [NL80211_IFTYPE_MESH_POINT] = { |
430 | .tx = 0xffff, | |
71839121 JC |
431 | .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | |
432 | BIT(IEEE80211_STYPE_AUTH >> 4) | | |
433 | BIT(IEEE80211_STYPE_DEAUTH >> 4), | |
c7108a71 | 434 | }, |
f142c6b9 JB |
435 | [NL80211_IFTYPE_P2P_DEVICE] = { |
436 | .tx = 0xffff, | |
437 | .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | | |
438 | BIT(IEEE80211_STYPE_PROBE_REQ >> 4), | |
439 | }, | |
2e161f78 JB |
440 | }; |
441 | ||
ef96a842 BG |
442 | static const struct ieee80211_ht_cap mac80211_ht_capa_mod_mask = { |
443 | .ampdu_params_info = IEEE80211_HT_AMPDU_PARM_FACTOR | | |
444 | IEEE80211_HT_AMPDU_PARM_DENSITY, | |
445 | ||
446 | .cap_info = cpu_to_le16(IEEE80211_HT_CAP_SUP_WIDTH_20_40 | | |
447 | IEEE80211_HT_CAP_MAX_AMSDU | | |
bc0784d9 | 448 | IEEE80211_HT_CAP_SGI_20 | |
ef96a842 BG |
449 | IEEE80211_HT_CAP_SGI_40), |
450 | .mcs = { | |
451 | .rx_mask = { 0xff, 0xff, 0xff, 0xff, 0xff, | |
452 | 0xff, 0xff, 0xff, 0xff, 0xff, }, | |
453 | }, | |
454 | }; | |
455 | ||
dd5ecfea JB |
456 | static const struct ieee80211_vht_cap mac80211_vht_capa_mod_mask = { |
457 | .vht_cap_info = | |
458 | cpu_to_le32(IEEE80211_VHT_CAP_RXLDPC | | |
459 | IEEE80211_VHT_CAP_SHORT_GI_80 | | |
460 | IEEE80211_VHT_CAP_SHORT_GI_160 | | |
461 | IEEE80211_VHT_CAP_RXSTBC_1 | | |
462 | IEEE80211_VHT_CAP_RXSTBC_2 | | |
463 | IEEE80211_VHT_CAP_RXSTBC_3 | | |
464 | IEEE80211_VHT_CAP_RXSTBC_4 | | |
465 | IEEE80211_VHT_CAP_TXSTBC | | |
466 | IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE | | |
467 | IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE | | |
468 | IEEE80211_VHT_CAP_TX_ANTENNA_PATTERN | | |
469 | IEEE80211_VHT_CAP_RX_ANTENNA_PATTERN | | |
470 | IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK), | |
471 | .supp_mcs = { | |
472 | .rx_mcs_map = cpu_to_le16(~0), | |
473 | .tx_mcs_map = cpu_to_le16(~0), | |
474 | }, | |
475 | }; | |
476 | ||
c6f9d6c3 JB |
477 | static const u8 extended_capabilities[] = { |
478 | 0, 0, 0, 0, 0, 0, 0, | |
479 | WLAN_EXT_CAPA8_OPMODE_NOTIF, | |
480 | }; | |
481 | ||
f0706e82 JB |
482 | struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len, |
483 | const struct ieee80211_ops *ops) | |
484 | { | |
f0706e82 | 485 | struct ieee80211_local *local; |
96f5e66e | 486 | int priv_size, i; |
f0706e82 | 487 | struct wiphy *wiphy; |
fe57d9f5 | 488 | bool use_chanctx; |
f0706e82 | 489 | |
c0af0734 JB |
490 | if (WARN_ON(!ops->tx || !ops->start || !ops->stop || !ops->config || |
491 | !ops->add_interface || !ops->remove_interface || | |
492 | !ops->configure_filter)) | |
493 | return NULL; | |
494 | ||
f09603a2 JB |
495 | if (WARN_ON(ops->sta_state && (ops->sta_add || ops->sta_remove))) |
496 | return NULL; | |
497 | ||
e269d860 JB |
498 | /* check all or no channel context operations exist */ |
499 | i = !!ops->add_chanctx + !!ops->remove_chanctx + | |
500 | !!ops->change_chanctx + !!ops->assign_vif_chanctx + | |
501 | !!ops->unassign_vif_chanctx; | |
502 | if (WARN_ON(i != 0 && i != 5)) | |
503 | return NULL; | |
fe57d9f5 | 504 | use_chanctx = i == 5; |
e269d860 | 505 | |
f0706e82 JB |
506 | /* Ensure 32-byte alignment of our private data and hw private data. |
507 | * We use the wiphy priv data for both our ieee80211_local and for | |
508 | * the driver's private data | |
509 | * | |
510 | * In memory it'll be like this: | |
511 | * | |
512 | * +-------------------------+ | |
513 | * | struct wiphy | | |
514 | * +-------------------------+ | |
515 | * | struct ieee80211_local | | |
516 | * +-------------------------+ | |
517 | * | driver's private data | | |
518 | * +-------------------------+ | |
519 | * | |
520 | */ | |
1ce8e7b5 | 521 | priv_size = ALIGN(sizeof(*local), NETDEV_ALIGN) + priv_data_len; |
f0706e82 JB |
522 | |
523 | wiphy = wiphy_new(&mac80211_config_ops, priv_size); | |
524 | ||
525 | if (!wiphy) | |
526 | return NULL; | |
527 | ||
2e161f78 JB |
528 | wiphy->mgmt_stypes = ieee80211_default_mgmt_stypes; |
529 | ||
207aba60 JB |
530 | wiphy->privid = mac80211_wiphy_privid; |
531 | ||
9bc383de JB |
532 | wiphy->flags |= WIPHY_FLAG_NETNS_OK | |
533 | WIPHY_FLAG_4ADDR_AP | | |
ee971924 | 534 | WIPHY_FLAG_4ADDR_STATION | |
7c4ef712 | 535 | WIPHY_FLAG_REPORTS_OBSS | |
81ddbb5c JB |
536 | WIPHY_FLAG_OFFCHAN_TX; |
537 | ||
c6f9d6c3 JB |
538 | wiphy->extended_capabilities = extended_capabilities; |
539 | wiphy->extended_capabilities_mask = extended_capabilities; | |
540 | wiphy->extended_capabilities_len = ARRAY_SIZE(extended_capabilities); | |
541 | ||
81ddbb5c JB |
542 | if (ops->remain_on_channel) |
543 | wiphy->flags |= WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL; | |
207aba60 | 544 | |
b292219f JB |
545 | wiphy->features |= NL80211_FEATURE_SK_TX_STATUS | |
546 | NL80211_FEATURE_SAE | | |
1ea6f9c0 | 547 | NL80211_FEATURE_HT_IBSS | |
a6dad6a2 TP |
548 | NL80211_FEATURE_VIF_TXPOWER | |
549 | NL80211_FEATURE_USERSPACE_MPM; | |
a729cff8 | 550 | |
cd2bb512 | 551 | if (!ops->hw_scan) |
5c95b940 AQ |
552 | wiphy->features |= NL80211_FEATURE_LOW_PRIORITY_SCAN | |
553 | NL80211_FEATURE_AP_SCAN; | |
554 | ||
cd2bb512 | 555 | |
207aba60 JB |
556 | if (!ops->set_key) |
557 | wiphy->flags |= WIPHY_FLAG_IBSS_RSN; | |
18a83659 | 558 | |
0c1ad2ca | 559 | wiphy->bss_priv_size = sizeof(struct ieee80211_bss); |
f0706e82 JB |
560 | |
561 | local = wiphy_priv(wiphy); | |
de95a54b | 562 | |
f0706e82 JB |
563 | local->hw.wiphy = wiphy; |
564 | ||
1ce8e7b5 | 565 | local->hw.priv = (char *)local + ALIGN(sizeof(*local), NETDEV_ALIGN); |
f0706e82 JB |
566 | |
567 | local->ops = ops; | |
fe57d9f5 | 568 | local->use_chanctx = use_chanctx; |
f0706e82 | 569 | |
e6a9854b JB |
570 | /* set up some defaults */ |
571 | local->hw.queues = 1; | |
572 | local->hw.max_rates = 1; | |
78be49ec | 573 | local->hw.max_report_rates = 0; |
df6ba5d8 | 574 | local->hw.max_rx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF; |
39e68712 | 575 | local->hw.max_tx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF; |
3a25a8c8 | 576 | local->hw.offchannel_tx_hw_queue = IEEE80211_INVAL_HW_QUEUE; |
b9a5f8ca JM |
577 | local->hw.conf.long_frame_max_tx_count = wiphy->retry_long; |
578 | local->hw.conf.short_frame_max_tx_count = wiphy->retry_short; | |
ac55d2fe JB |
579 | local->hw.radiotap_mcs_details = IEEE80211_RADIOTAP_MCS_HAVE_MCS | |
580 | IEEE80211_RADIOTAP_MCS_HAVE_GI | | |
581 | IEEE80211_RADIOTAP_MCS_HAVE_BW; | |
51648921 JB |
582 | local->hw.radiotap_vht_details = IEEE80211_RADIOTAP_VHT_KNOWN_GI | |
583 | IEEE80211_RADIOTAP_VHT_KNOWN_BANDWIDTH; | |
219c3867 AB |
584 | local->hw.uapsd_queues = IEEE80211_DEFAULT_UAPSD_QUEUES; |
585 | local->hw.uapsd_max_sp_len = IEEE80211_DEFAULT_MAX_SP_LEN; | |
1ea6f9c0 | 586 | local->user_power_level = IEEE80211_UNSET_POWER_LEVEL; |
ef96a842 | 587 | wiphy->ht_capa_mod_mask = &mac80211_ht_capa_mod_mask; |
dd5ecfea | 588 | wiphy->vht_capa_mod_mask = &mac80211_vht_capa_mod_mask; |
f0706e82 | 589 | |
79010420 | 590 | INIT_LIST_HEAD(&local->interfaces); |
2f787b0b YH |
591 | |
592 | __hw_addr_init(&local->mc_list); | |
593 | ||
c771c9d8 | 594 | mutex_init(&local->iflist_mtx); |
a1699b75 | 595 | mutex_init(&local->mtx); |
f0706e82 | 596 | |
ad0e2b5a | 597 | mutex_init(&local->key_mtx); |
3b8d81e0 | 598 | spin_lock_init(&local->filter_lock); |
f9e124fb | 599 | spin_lock_init(&local->rx_path_lock); |
ce7c9111 KV |
600 | spin_lock_init(&local->queue_stop_reason_lock); |
601 | ||
d01a1e65 MK |
602 | INIT_LIST_HEAD(&local->chanctx_list); |
603 | mutex_init(&local->chanctx_mtx); | |
604 | ||
c2b13452 | 605 | INIT_DELAYED_WORK(&local->scan_work, ieee80211_scan_work); |
f0706e82 | 606 | |
f2753ddb JB |
607 | INIT_WORK(&local->restart_work, ieee80211_restart_work); |
608 | ||
164eb02d SW |
609 | INIT_WORK(&local->radar_detected_work, |
610 | ieee80211_dfs_radar_detected_work); | |
611 | ||
3ac64bee | 612 | INIT_WORK(&local->reconfig_filter, ieee80211_reconfig_filter); |
0f78231b | 613 | local->smps_mode = IEEE80211_SMPS_OFF; |
3ac64bee | 614 | |
520eb820 KV |
615 | INIT_WORK(&local->dynamic_ps_enable_work, |
616 | ieee80211_dynamic_ps_enable_work); | |
617 | INIT_WORK(&local->dynamic_ps_disable_work, | |
618 | ieee80211_dynamic_ps_disable_work); | |
619 | setup_timer(&local->dynamic_ps_timer, | |
620 | ieee80211_dynamic_ps_timer, (unsigned long) local); | |
621 | ||
85a9994a LC |
622 | INIT_WORK(&local->sched_scan_stopped_work, |
623 | ieee80211_sched_scan_stopped_work); | |
624 | ||
a729cff8 JB |
625 | spin_lock_init(&local->ack_status_lock); |
626 | idr_init(&local->ack_status_frames); | |
a729cff8 | 627 | |
f0706e82 JB |
628 | sta_info_init(local); |
629 | ||
a6a67db2 | 630 | for (i = 0; i < IEEE80211_MAX_QUEUES; i++) { |
2a577d98 | 631 | skb_queue_head_init(&local->pending[i]); |
a6a67db2 JB |
632 | atomic_set(&local->agg_queue_stop[i], 0); |
633 | } | |
f0706e82 JB |
634 | tasklet_init(&local->tx_pending_tasklet, ieee80211_tx_pending, |
635 | (unsigned long)local); | |
f0706e82 JB |
636 | |
637 | tasklet_init(&local->tasklet, | |
638 | ieee80211_tasklet_handler, | |
639 | (unsigned long) local); | |
f0706e82 JB |
640 | |
641 | skb_queue_head_init(&local->skb_queue); | |
642 | skb_queue_head_init(&local->skb_queue_unreliable); | |
643 | ||
fe67c913 JB |
644 | ieee80211_led_names(local); |
645 | ||
2eb278e0 | 646 | ieee80211_roc_setup(local); |
21f83589 | 647 | |
005e472b | 648 | return &local->hw; |
f0706e82 JB |
649 | } |
650 | EXPORT_SYMBOL(ieee80211_alloc_hw); | |
651 | ||
2475b1cc | 652 | static int ieee80211_init_cipher_suites(struct ieee80211_local *local) |
f0706e82 | 653 | { |
2475b1cc MS |
654 | bool have_wep = !(IS_ERR(local->wep_tx_tfm) || |
655 | IS_ERR(local->wep_rx_tfm)); | |
656 | bool have_mfp = local->hw.flags & IEEE80211_HW_MFP_CAPABLE; | |
657 | const struct ieee80211_cipher_scheme *cs = local->hw.cipher_schemes; | |
658 | int n_suites = 0, r = 0, w = 0; | |
659 | u32 *suites; | |
25e47c18 | 660 | static const u32 cipher_suites[] = { |
5daa8a8e | 661 | /* keep WEP first, it may be removed below */ |
25e47c18 JB |
662 | WLAN_CIPHER_SUITE_WEP40, |
663 | WLAN_CIPHER_SUITE_WEP104, | |
664 | WLAN_CIPHER_SUITE_TKIP, | |
665 | WLAN_CIPHER_SUITE_CCMP, | |
666 | ||
667 | /* keep last -- depends on hw flags! */ | |
668 | WLAN_CIPHER_SUITE_AES_CMAC | |
669 | }; | |
8318d78a | 670 | |
2475b1cc MS |
671 | /* Driver specifies the ciphers, we have nothing to do... */ |
672 | if (local->hw.wiphy->cipher_suites && have_wep) | |
673 | return 0; | |
674 | ||
675 | /* Set up cipher suites if driver relies on mac80211 cipher defs */ | |
676 | if (!local->hw.wiphy->cipher_suites && !cs) { | |
677 | local->hw.wiphy->cipher_suites = cipher_suites; | |
678 | local->hw.wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites); | |
679 | ||
680 | if (!have_mfp) | |
681 | local->hw.wiphy->n_cipher_suites--; | |
682 | ||
683 | if (!have_wep) { | |
684 | local->hw.wiphy->cipher_suites += 2; | |
685 | local->hw.wiphy->n_cipher_suites -= 2; | |
686 | } | |
687 | ||
688 | return 0; | |
689 | } | |
690 | ||
691 | if (!local->hw.wiphy->cipher_suites) { | |
692 | /* | |
693 | * Driver specifies cipher schemes only | |
694 | * We start counting ciphers defined by schemes, TKIP and CCMP | |
695 | */ | |
696 | n_suites = local->hw.n_cipher_schemes + 2; | |
697 | ||
698 | /* check if we have WEP40 and WEP104 */ | |
699 | if (have_wep) | |
700 | n_suites += 2; | |
701 | ||
702 | /* check if we have AES_CMAC */ | |
703 | if (have_mfp) | |
704 | n_suites++; | |
705 | ||
706 | suites = kmalloc(sizeof(u32) * n_suites, GFP_KERNEL); | |
707 | if (!suites) | |
708 | return -ENOMEM; | |
709 | ||
710 | suites[w++] = WLAN_CIPHER_SUITE_CCMP; | |
711 | suites[w++] = WLAN_CIPHER_SUITE_TKIP; | |
712 | ||
713 | if (have_wep) { | |
714 | suites[w++] = WLAN_CIPHER_SUITE_WEP40; | |
715 | suites[w++] = WLAN_CIPHER_SUITE_WEP104; | |
716 | } | |
717 | ||
718 | if (have_mfp) | |
719 | suites[w++] = WLAN_CIPHER_SUITE_AES_CMAC; | |
720 | ||
721 | for (r = 0; r < local->hw.n_cipher_schemes; r++) | |
722 | suites[w++] = cs[r].cipher; | |
723 | } else { | |
724 | /* Driver provides cipher suites, but we need to exclude WEP */ | |
725 | suites = kmemdup(local->hw.wiphy->cipher_suites, | |
726 | sizeof(u32) * local->hw.wiphy->n_cipher_suites, | |
727 | GFP_KERNEL); | |
728 | if (!suites) | |
729 | return -ENOMEM; | |
730 | ||
731 | for (r = 0; r < local->hw.wiphy->n_cipher_suites; r++) { | |
732 | u32 suite = local->hw.wiphy->cipher_suites[r]; | |
733 | ||
734 | if (suite == WLAN_CIPHER_SUITE_WEP40 || | |
735 | suite == WLAN_CIPHER_SUITE_WEP104) | |
736 | continue; | |
737 | suites[w++] = suite; | |
738 | } | |
739 | } | |
740 | ||
741 | local->hw.wiphy->cipher_suites = suites; | |
742 | local->hw.wiphy->n_cipher_suites = w; | |
743 | local->wiphy_ciphers_allocated = true; | |
744 | ||
745 | return 0; | |
746 | } | |
747 | ||
748 | int ieee80211_register_hw(struct ieee80211_hw *hw) | |
749 | { | |
750 | struct ieee80211_local *local = hw_to_local(hw); | |
751 | int result, i; | |
752 | enum ieee80211_band band; | |
753 | int channels, max_bitrates; | |
754 | bool supp_ht, supp_vht; | |
755 | netdev_features_t feature_whitelist; | |
756 | struct cfg80211_chan_def dflt_chandef = {}; | |
757 | ||
3a25a8c8 JB |
758 | if (hw->flags & IEEE80211_HW_QUEUE_CONTROL && |
759 | (local->hw.offchannel_tx_hw_queue == IEEE80211_INVAL_HW_QUEUE || | |
760 | local->hw.offchannel_tx_hw_queue >= local->hw.queues)) | |
761 | return -EINVAL; | |
762 | ||
38bb3e9d | 763 | #ifdef CONFIG_PM |
964dc9e2 | 764 | if (hw->wiphy->wowlan && (!local->ops->suspend || !local->ops->resume)) |
eecc4800 | 765 | return -EINVAL; |
dfb89c56 | 766 | #endif |
eecc4800 | 767 | |
fe57d9f5 JB |
768 | if (!local->use_chanctx) { |
769 | for (i = 0; i < local->hw.wiphy->n_iface_combinations; i++) { | |
770 | const struct ieee80211_iface_combination *comb; | |
771 | ||
772 | comb = &local->hw.wiphy->iface_combinations[i]; | |
773 | ||
774 | if (comb->num_different_channels > 1) | |
775 | return -EINVAL; | |
776 | } | |
746a3365 | 777 | } else { |
fe57d9f5 JB |
778 | /* |
779 | * WDS is currently prohibited when channel contexts are used | |
780 | * because there's no clear definition of which channel WDS | |
781 | * type interfaces use | |
782 | */ | |
783 | if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_WDS)) | |
784 | return -EINVAL; | |
164eb02d SW |
785 | |
786 | /* DFS currently not supported with channel context drivers */ | |
787 | for (i = 0; i < local->hw.wiphy->n_iface_combinations; i++) { | |
788 | const struct ieee80211_iface_combination *comb; | |
789 | ||
790 | comb = &local->hw.wiphy->iface_combinations[i]; | |
791 | ||
792 | if (comb->radar_detect_widths) | |
793 | return -EINVAL; | |
794 | } | |
fe57d9f5 JB |
795 | } |
796 | ||
72d78728 AN |
797 | /* Only HW csum features are currently compatible with mac80211 */ |
798 | feature_whitelist = NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | | |
799 | NETIF_F_HW_CSUM; | |
800 | if (WARN_ON(hw->netdev_features & ~feature_whitelist)) | |
801 | return -EINVAL; | |
802 | ||
78be49ec HS |
803 | if (hw->max_report_rates == 0) |
804 | hw->max_report_rates = hw->max_rates; | |
805 | ||
04ecd257 JB |
806 | local->rx_chains = 1; |
807 | ||
8318d78a JB |
808 | /* |
809 | * generic code guarantees at least one band, | |
810 | * set this very early because much code assumes | |
811 | * that hw.conf.channel is assigned | |
812 | */ | |
2a519311 | 813 | channels = 0; |
de95a54b | 814 | max_bitrates = 0; |
5ef2d41a | 815 | supp_ht = false; |
ba0afa2f | 816 | supp_vht = false; |
8318d78a JB |
817 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { |
818 | struct ieee80211_supported_band *sband; | |
819 | ||
820 | sband = local->hw.wiphy->bands[band]; | |
de95a54b JB |
821 | if (!sband) |
822 | continue; | |
fffa4b1c KB |
823 | |
824 | if (!dflt_chandef.chan) { | |
825 | cfg80211_chandef_create(&dflt_chandef, | |
826 | &sband->channels[0], | |
827 | NL80211_CHAN_NO_HT); | |
8318d78a | 828 | /* init channel we're on */ |
fffa4b1c KB |
829 | if (!local->use_chanctx && !local->_oper_chandef.chan) { |
830 | local->hw.conf.chandef = dflt_chandef; | |
831 | local->_oper_chandef = dflt_chandef; | |
832 | } | |
833 | local->monitor_chandef = dflt_chandef; | |
8318d78a | 834 | } |
fffa4b1c | 835 | |
de95a54b JB |
836 | channels += sband->n_channels; |
837 | ||
838 | if (max_bitrates < sband->n_bitrates) | |
839 | max_bitrates = sband->n_bitrates; | |
5ef2d41a | 840 | supp_ht = supp_ht || sband->ht_cap.ht_supported; |
ba0afa2f | 841 | supp_vht = supp_vht || sband->vht_cap.vht_supported; |
04ecd257 JB |
842 | |
843 | if (sband->ht_cap.ht_supported) | |
844 | local->rx_chains = | |
845 | max(ieee80211_mcs_to_chains(&sband->ht_cap.mcs), | |
846 | local->rx_chains); | |
847 | ||
848 | /* TODO: consider VHT for RX chains, hopefully it's the same */ | |
8318d78a | 849 | } |
f0706e82 | 850 | |
f59ac048 | 851 | /* if low-level driver supports AP, we also support VLAN */ |
7527a782 JB |
852 | if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) { |
853 | hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP_VLAN); | |
854 | hw->wiphy->software_iftypes |= BIT(NL80211_IFTYPE_AP_VLAN); | |
855 | } | |
f59ac048 LR |
856 | |
857 | /* mac80211 always supports monitor */ | |
7527a782 JB |
858 | hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR); |
859 | hw->wiphy->software_iftypes |= BIT(NL80211_IFTYPE_MONITOR); | |
860 | ||
55de908a | 861 | /* mac80211 doesn't support more than one IBSS interface right now */ |
8e621fc9 JB |
862 | for (i = 0; i < hw->wiphy->n_iface_combinations; i++) { |
863 | const struct ieee80211_iface_combination *c; | |
864 | int j; | |
865 | ||
866 | c = &hw->wiphy->iface_combinations[i]; | |
867 | ||
8e621fc9 JB |
868 | for (j = 0; j < c->n_limits; j++) |
869 | if ((c->limits[j].types & BIT(NL80211_IFTYPE_ADHOC)) && | |
870 | c->limits[j].max > 1) | |
871 | return -EINVAL; | |
872 | } | |
873 | ||
5b0ec94f JB |
874 | local->int_scan_req = kzalloc(sizeof(*local->int_scan_req) + |
875 | sizeof(void *) * channels, GFP_KERNEL); | |
876 | if (!local->int_scan_req) | |
877 | return -ENOMEM; | |
878 | ||
879 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { | |
880 | if (!local->hw.wiphy->bands[band]) | |
881 | continue; | |
882 | local->int_scan_req->rates[band] = (u32) -1; | |
883 | } | |
884 | ||
5eb5a52d JB |
885 | #ifndef CONFIG_MAC80211_MESH |
886 | /* mesh depends on Kconfig, but drivers should set it if they want */ | |
887 | local->hw.wiphy->interface_modes &= ~BIT(NL80211_IFTYPE_MESH_POINT); | |
888 | #endif | |
889 | ||
1570ca59 JC |
890 | /* if the underlying driver supports mesh, mac80211 will (at least) |
891 | * provide routing of mesh authentication frames to userspace */ | |
892 | if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_MESH_POINT)) | |
893 | local->hw.wiphy->flags |= WIPHY_FLAG_MESH_AUTH; | |
894 | ||
a621fa4d JB |
895 | /* mac80211 supports control port protocol changing */ |
896 | local->hw.wiphy->flags |= WIPHY_FLAG_CONTROL_PORT_PROTOCOL; | |
897 | ||
52512072 | 898 | if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM) { |
77965c97 | 899 | local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM; |
52512072 | 900 | } else if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC) { |
77965c97 | 901 | local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC; |
52512072 | 902 | if (hw->max_signal <= 0) { |
903 | result = -EINVAL; | |
904 | goto fail_wiphy_register; | |
905 | } | |
906 | } | |
77965c97 | 907 | |
ab13315a KV |
908 | WARN((local->hw.flags & IEEE80211_HW_SUPPORTS_UAPSD) |
909 | && (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK), | |
910 | "U-APSD not supported with HW_PS_NULLFUNC_STACK\n"); | |
911 | ||
de95a54b JB |
912 | /* |
913 | * Calculate scan IE length -- we need this to alloc | |
914 | * memory and to subtract from the driver limit. It | |
dc9f48ce | 915 | * includes the DS Params, (extended) supported rates, and HT |
de95a54b JB |
916 | * information -- SSID is the driver's responsibility. |
917 | */ | |
dc9f48ce JM |
918 | local->scan_ies_len = 4 + max_bitrates /* (ext) supp rates */ + |
919 | 3 /* DS Params */; | |
5ef2d41a JB |
920 | if (supp_ht) |
921 | local->scan_ies_len += 2 + sizeof(struct ieee80211_ht_cap); | |
de95a54b | 922 | |
d0e6c21a | 923 | if (supp_vht) |
ba0afa2f | 924 | local->scan_ies_len += |
d4950281 | 925 | 2 + sizeof(struct ieee80211_vht_cap); |
ba0afa2f | 926 | |
de95a54b JB |
927 | if (!local->ops->hw_scan) { |
928 | /* For hw_scan, driver needs to set these up. */ | |
929 | local->hw.wiphy->max_scan_ssids = 4; | |
930 | local->hw.wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN; | |
931 | } | |
932 | ||
933 | /* | |
934 | * If the driver supports any scan IEs, then assume the | |
935 | * limit includes the IEs mac80211 will add, otherwise | |
936 | * leave it at zero and let the driver sort it out; we | |
937 | * still pass our IEs to the driver but userspace will | |
938 | * not be allowed to in that case. | |
939 | */ | |
940 | if (local->hw.wiphy->max_scan_ie_len) | |
941 | local->hw.wiphy->max_scan_ie_len -= local->scan_ies_len; | |
942 | ||
2475b1cc MS |
943 | WARN_ON(!ieee80211_cs_list_valid(local->hw.cipher_schemes, |
944 | local->hw.n_cipher_schemes)); | |
945 | ||
946 | result = ieee80211_init_cipher_suites(local); | |
947 | if (result < 0) | |
948 | goto fail_wiphy_register; | |
25e47c18 | 949 | |
21f83589 JB |
950 | if (!local->ops->remain_on_channel) |
951 | local->hw.wiphy->max_remain_on_channel_duration = 5000; | |
a293911d | 952 | |
dfe018bf AN |
953 | /* mac80211 based drivers don't support internal TDLS setup */ |
954 | if (local->hw.wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS) | |
955 | local->hw.wiphy->flags |= WIPHY_FLAG_TDLS_EXTERNAL_SETUP; | |
956 | ||
f0706e82 JB |
957 | result = wiphy_register(local->hw.wiphy); |
958 | if (result < 0) | |
2a519311 | 959 | goto fail_wiphy_register; |
f0706e82 | 960 | |
e2530083 JB |
961 | /* |
962 | * We use the number of queues for feature tests (QoS, HT) internally | |
963 | * so restrict them appropriately. | |
964 | */ | |
e2530083 JB |
965 | if (hw->queues > IEEE80211_MAX_QUEUES) |
966 | hw->queues = IEEE80211_MAX_QUEUES; | |
e2530083 | 967 | |
42935eca | 968 | local->workqueue = |
d8537548 | 969 | alloc_ordered_workqueue("%s", 0, wiphy_name(local->hw.wiphy)); |
42935eca | 970 | if (!local->workqueue) { |
f0706e82 JB |
971 | result = -ENOMEM; |
972 | goto fail_workqueue; | |
973 | } | |
974 | ||
b306f453 JB |
975 | /* |
976 | * The hardware needs headroom for sending the frame, | |
977 | * and we need some headroom for passing the frame to monitor | |
978 | * interfaces, but never both at the same time. | |
979 | */ | |
33ccad35 | 980 | local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom, |
a2fe8166 | 981 | IEEE80211_TX_STATUS_HEADROOM); |
b306f453 | 982 | |
e9f207f0 JB |
983 | debugfs_hw_add(local); |
984 | ||
b446918b HS |
985 | /* |
986 | * if the driver doesn't specify a max listen interval we | |
987 | * use 5 which should be a safe default | |
988 | */ | |
ea95bba4 | 989 | if (local->hw.max_listen_interval == 0) |
b446918b | 990 | local->hw.max_listen_interval = 5; |
ea95bba4 TW |
991 | |
992 | local->hw.conf.listen_interval = local->hw.max_listen_interval; | |
993 | ||
ff616381 | 994 | local->dynamic_ps_forced_timeout = -1; |
195e294d | 995 | |
d4c4a9a1 | 996 | result = ieee80211_wep_init(local); |
3473187d | 997 | if (result < 0) |
0fb9a9ec JP |
998 | wiphy_debug(local->hw.wiphy, "Failed to initialize wep: %d\n", |
999 | result); | |
d4c4a9a1 | 1000 | |
24d47300 KB |
1001 | local->hw.conf.flags = IEEE80211_CONF_IDLE; |
1002 | ||
b57e6b56 MSS |
1003 | ieee80211_led_init(local); |
1004 | ||
f0706e82 | 1005 | rtnl_lock(); |
f0706e82 | 1006 | |
830f9038 JB |
1007 | result = ieee80211_init_rate_ctrl_alg(local, |
1008 | hw->rate_control_algorithm); | |
f0706e82 | 1009 | if (result < 0) { |
0fb9a9ec JP |
1010 | wiphy_debug(local->hw.wiphy, |
1011 | "Failed to initialize rate control algorithm\n"); | |
f0706e82 JB |
1012 | goto fail_rate; |
1013 | } | |
1014 | ||
8dffff21 JB |
1015 | /* add one default STA interface if supported */ |
1016 | if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_STATION)) { | |
1017 | result = ieee80211_if_add(local, "wlan%d", NULL, | |
1018 | NL80211_IFTYPE_STATION, NULL); | |
1019 | if (result) | |
0fb9a9ec JP |
1020 | wiphy_warn(local->hw.wiphy, |
1021 | "Failed to add default virtual iface\n"); | |
8dffff21 | 1022 | } |
f0706e82 | 1023 | |
f0706e82 JB |
1024 | rtnl_unlock(); |
1025 | ||
10f644a4 JB |
1026 | local->network_latency_notifier.notifier_call = |
1027 | ieee80211_max_network_latency; | |
1028 | result = pm_qos_add_notifier(PM_QOS_NETWORK_LATENCY, | |
1029 | &local->network_latency_notifier); | |
10f644a4 JB |
1030 | if (result) { |
1031 | rtnl_lock(); | |
1032 | goto fail_pm_qos; | |
1033 | } | |
1034 | ||
26b36cfe | 1035 | #ifdef CONFIG_INET |
2b2c009e JO |
1036 | local->ifa_notifier.notifier_call = ieee80211_ifa_changed; |
1037 | result = register_inetaddr_notifier(&local->ifa_notifier); | |
1038 | if (result) | |
1039 | goto fail_ifa; | |
26b36cfe | 1040 | #endif |
2b2c009e | 1041 | |
a65240c1 JB |
1042 | #if IS_ENABLED(CONFIG_IPV6) |
1043 | local->ifa6_notifier.notifier_call = ieee80211_ifa6_changed; | |
1044 | result = register_inet6addr_notifier(&local->ifa6_notifier); | |
1045 | if (result) | |
1046 | goto fail_ifa6; | |
1047 | #endif | |
1048 | ||
f0706e82 JB |
1049 | return 0; |
1050 | ||
a65240c1 JB |
1051 | #if IS_ENABLED(CONFIG_IPV6) |
1052 | fail_ifa6: | |
93c08c32 | 1053 | #ifdef CONFIG_INET |
a65240c1 JB |
1054 | unregister_inetaddr_notifier(&local->ifa_notifier); |
1055 | #endif | |
1056 | #endif | |
1057 | #if defined(CONFIG_INET) || defined(CONFIG_IPV6) | |
2b2c009e JO |
1058 | fail_ifa: |
1059 | pm_qos_remove_notifier(PM_QOS_NETWORK_LATENCY, | |
1060 | &local->network_latency_notifier); | |
1061 | rtnl_lock(); | |
93c08c32 | 1062 | #endif |
10f644a4 JB |
1063 | fail_pm_qos: |
1064 | ieee80211_led_exit(local); | |
1065 | ieee80211_remove_interfaces(local); | |
10f644a4 | 1066 | fail_rate: |
f0706e82 | 1067 | rtnl_unlock(); |
d4c4a9a1 | 1068 | ieee80211_wep_free(local); |
f0706e82 | 1069 | sta_info_stop(local); |
42935eca | 1070 | destroy_workqueue(local->workqueue); |
10f644a4 | 1071 | fail_workqueue: |
f0706e82 | 1072 | wiphy_unregister(local->hw.wiphy); |
10f644a4 | 1073 | fail_wiphy_register: |
3ffc2a90 JB |
1074 | if (local->wiphy_ciphers_allocated) |
1075 | kfree(local->hw.wiphy->cipher_suites); | |
11ba964d | 1076 | kfree(local->int_scan_req); |
f0706e82 JB |
1077 | return result; |
1078 | } | |
1079 | EXPORT_SYMBOL(ieee80211_register_hw); | |
1080 | ||
06d181a8 JB |
1081 | void ieee80211_napi_add(struct ieee80211_hw *hw, struct napi_struct *napi, |
1082 | struct net_device *napi_dev, | |
1083 | int (*poll)(struct napi_struct *, int), | |
1084 | int weight) | |
1085 | { | |
1086 | struct ieee80211_local *local = hw_to_local(hw); | |
1087 | ||
1088 | netif_napi_add(napi_dev, napi, poll, weight); | |
1089 | local->napi = napi; | |
1090 | } | |
1091 | EXPORT_SYMBOL_GPL(ieee80211_napi_add); | |
1092 | ||
f0706e82 JB |
1093 | void ieee80211_unregister_hw(struct ieee80211_hw *hw) |
1094 | { | |
1095 | struct ieee80211_local *local = hw_to_local(hw); | |
f0706e82 JB |
1096 | |
1097 | tasklet_kill(&local->tx_pending_tasklet); | |
1098 | tasklet_kill(&local->tasklet); | |
1099 | ||
10f644a4 JB |
1100 | pm_qos_remove_notifier(PM_QOS_NETWORK_LATENCY, |
1101 | &local->network_latency_notifier); | |
26b36cfe | 1102 | #ifdef CONFIG_INET |
2b2c009e | 1103 | unregister_inetaddr_notifier(&local->ifa_notifier); |
26b36cfe | 1104 | #endif |
a65240c1 JB |
1105 | #if IS_ENABLED(CONFIG_IPV6) |
1106 | unregister_inet6addr_notifier(&local->ifa6_notifier); | |
1107 | #endif | |
10f644a4 | 1108 | |
f0706e82 JB |
1109 | rtnl_lock(); |
1110 | ||
79010420 JB |
1111 | /* |
1112 | * At this point, interface list manipulations are fine | |
1113 | * because the driver cannot be handing us frames any | |
1114 | * more and the tasklet is killed. | |
1115 | */ | |
75636525 | 1116 | ieee80211_remove_interfaces(local); |
5b2812e9 | 1117 | |
f0706e82 JB |
1118 | rtnl_unlock(); |
1119 | ||
258086a4 | 1120 | cancel_work_sync(&local->restart_work); |
3ac64bee | 1121 | cancel_work_sync(&local->reconfig_filter); |
18db594a | 1122 | flush_work(&local->sched_scan_stopped_work); |
3ac64bee | 1123 | |
f0706e82 | 1124 | ieee80211_clear_tx_pending(local); |
f0706e82 JB |
1125 | rate_control_deinitialize(local); |
1126 | ||
f64f9e71 JP |
1127 | if (skb_queue_len(&local->skb_queue) || |
1128 | skb_queue_len(&local->skb_queue_unreliable)) | |
0fb9a9ec | 1129 | wiphy_warn(local->hw.wiphy, "skb_queue not empty\n"); |
f0706e82 JB |
1130 | skb_queue_purge(&local->skb_queue); |
1131 | skb_queue_purge(&local->skb_queue_unreliable); | |
1132 | ||
42935eca | 1133 | destroy_workqueue(local->workqueue); |
f0706e82 | 1134 | wiphy_unregister(local->hw.wiphy); |
ecb44335 | 1135 | sta_info_stop(local); |
f0706e82 JB |
1136 | ieee80211_wep_free(local); |
1137 | ieee80211_led_exit(local); | |
5ba63533 | 1138 | kfree(local->int_scan_req); |
f0706e82 JB |
1139 | } |
1140 | EXPORT_SYMBOL(ieee80211_unregister_hw); | |
1141 | ||
a729cff8 JB |
1142 | static int ieee80211_free_ack_frame(int id, void *p, void *data) |
1143 | { | |
1144 | WARN_ONCE(1, "Have pending ack frames!\n"); | |
1145 | kfree_skb(p); | |
1146 | return 0; | |
1147 | } | |
1148 | ||
f0706e82 JB |
1149 | void ieee80211_free_hw(struct ieee80211_hw *hw) |
1150 | { | |
1151 | struct ieee80211_local *local = hw_to_local(hw); | |
1152 | ||
c771c9d8 | 1153 | mutex_destroy(&local->iflist_mtx); |
a1699b75 | 1154 | mutex_destroy(&local->mtx); |
c771c9d8 | 1155 | |
3ffc2a90 JB |
1156 | if (local->wiphy_ciphers_allocated) |
1157 | kfree(local->hw.wiphy->cipher_suites); | |
1158 | ||
a729cff8 JB |
1159 | idr_for_each(&local->ack_status_frames, |
1160 | ieee80211_free_ack_frame, NULL); | |
1161 | idr_destroy(&local->ack_status_frames); | |
1162 | ||
ad38bfc9 MG |
1163 | kfree(rcu_access_pointer(local->tx_latency)); |
1164 | ||
f0706e82 JB |
1165 | wiphy_free(local->hw.wiphy); |
1166 | } | |
1167 | EXPORT_SYMBOL(ieee80211_free_hw); | |
1168 | ||
f0706e82 JB |
1169 | static int __init ieee80211_init(void) |
1170 | { | |
1171 | struct sk_buff *skb; | |
1172 | int ret; | |
1173 | ||
e039fa4a JB |
1174 | BUILD_BUG_ON(sizeof(struct ieee80211_tx_info) > sizeof(skb->cb)); |
1175 | BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, driver_data) + | |
c6a1fa12 | 1176 | IEEE80211_TX_INFO_DRIVER_DATA_SIZE > sizeof(skb->cb)); |
f0706e82 | 1177 | |
cccf129f FF |
1178 | ret = rc80211_minstrel_init(); |
1179 | if (ret) | |
1180 | return ret; | |
1181 | ||
ec8aa669 FF |
1182 | ret = rc80211_minstrel_ht_init(); |
1183 | if (ret) | |
1184 | goto err_minstrel; | |
1185 | ||
4b475898 | 1186 | ret = rc80211_pid_init(); |
ad018375 | 1187 | if (ret) |
47846c9b | 1188 | goto err_pid; |
f0706e82 | 1189 | |
47846c9b JB |
1190 | ret = ieee80211_iface_init(); |
1191 | if (ret) | |
1192 | goto err_netdev; | |
e9f207f0 | 1193 | |
f0706e82 | 1194 | return 0; |
47846c9b JB |
1195 | err_netdev: |
1196 | rc80211_pid_exit(); | |
1197 | err_pid: | |
ec8aa669 FF |
1198 | rc80211_minstrel_ht_exit(); |
1199 | err_minstrel: | |
47846c9b JB |
1200 | rc80211_minstrel_exit(); |
1201 | ||
1202 | return ret; | |
f0706e82 JB |
1203 | } |
1204 | ||
f0706e82 JB |
1205 | static void __exit ieee80211_exit(void) |
1206 | { | |
4b475898 | 1207 | rc80211_pid_exit(); |
ec8aa669 | 1208 | rc80211_minstrel_ht_exit(); |
cccf129f | 1209 | rc80211_minstrel_exit(); |
ac71c691 | 1210 | |
bf7cd94d | 1211 | ieee80211s_stop(); |
902acc78 | 1212 | |
47846c9b | 1213 | ieee80211_iface_exit(); |
d07c7cf4 JB |
1214 | |
1215 | rcu_barrier(); | |
f0706e82 JB |
1216 | } |
1217 | ||
1218 | ||
ca9938fe | 1219 | subsys_initcall(ieee80211_init); |
f0706e82 JB |
1220 | module_exit(ieee80211_exit); |
1221 | ||
1222 | MODULE_DESCRIPTION("IEEE 802.11 subsystem"); | |
1223 | MODULE_LICENSE("GPL"); |