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