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> | |
12 | #include <net/ieee80211_radiotap.h> | |
13 | #include <linux/module.h> | |
14 | #include <linux/init.h> | |
15 | #include <linux/netdevice.h> | |
16 | #include <linux/types.h> | |
17 | #include <linux/slab.h> | |
18 | #include <linux/skbuff.h> | |
19 | #include <linux/etherdevice.h> | |
20 | #include <linux/if_arp.h> | |
21 | #include <linux/wireless.h> | |
22 | #include <linux/rtnetlink.h> | |
f0706e82 | 23 | #include <linux/bitmap.h> |
881d966b | 24 | #include <net/net_namespace.h> |
f0706e82 JB |
25 | #include <net/cfg80211.h> |
26 | ||
f0706e82 JB |
27 | #include "ieee80211_i.h" |
28 | #include "ieee80211_rate.h" | |
f7a92144 | 29 | #include "mesh.h" |
f0706e82 | 30 | #include "wep.h" |
f0706e82 JB |
31 | #include "wme.h" |
32 | #include "aes_ccm.h" | |
33 | #include "ieee80211_led.h" | |
e0eb6859 | 34 | #include "cfg.h" |
e9f207f0 JB |
35 | #include "debugfs.h" |
36 | #include "debugfs_netdev.h" | |
f0706e82 | 37 | |
d3c990fb RR |
38 | #define SUPP_MCS_SET_LEN 16 |
39 | ||
b306f453 JB |
40 | /* |
41 | * For seeing transmitted packets on monitor interfaces | |
42 | * we have a radiotap header too. | |
43 | */ | |
44 | struct ieee80211_tx_status_rtap_hdr { | |
45 | struct ieee80211_radiotap_header hdr; | |
46 | __le16 tx_flags; | |
47 | u8 data_retries; | |
48 | } __attribute__ ((packed)); | |
49 | ||
b2c258fb | 50 | /* common interface routines */ |
b306f453 | 51 | |
b95cce35 | 52 | static int header_parse_80211(const struct sk_buff *skb, unsigned char *haddr) |
b2c258fb JB |
53 | { |
54 | memcpy(haddr, skb_mac_header(skb) + 10, ETH_ALEN); /* addr2 */ | |
55 | return ETH_ALEN; | |
56 | } | |
f0706e82 | 57 | |
4150c572 JB |
58 | /* must be called under mdev tx lock */ |
59 | static void ieee80211_configure_filter(struct ieee80211_local *local) | |
60 | { | |
61 | unsigned int changed_flags; | |
62 | unsigned int new_flags = 0; | |
63 | ||
53918994 | 64 | if (atomic_read(&local->iff_promiscs)) |
4150c572 JB |
65 | new_flags |= FIF_PROMISC_IN_BSS; |
66 | ||
53918994 | 67 | if (atomic_read(&local->iff_allmultis)) |
4150c572 JB |
68 | new_flags |= FIF_ALLMULTI; |
69 | ||
70 | if (local->monitors) | |
8cc9a739 MW |
71 | new_flags |= FIF_BCN_PRBRESP_PROMISC; |
72 | ||
73 | if (local->fif_fcsfail) | |
74 | new_flags |= FIF_FCSFAIL; | |
75 | ||
76 | if (local->fif_plcpfail) | |
77 | new_flags |= FIF_PLCPFAIL; | |
78 | ||
79 | if (local->fif_control) | |
80 | new_flags |= FIF_CONTROL; | |
81 | ||
82 | if (local->fif_other_bss) | |
83 | new_flags |= FIF_OTHER_BSS; | |
4150c572 JB |
84 | |
85 | changed_flags = local->filter_flags ^ new_flags; | |
86 | ||
87 | /* be a bit nasty */ | |
88 | new_flags |= (1<<31); | |
89 | ||
90 | local->ops->configure_filter(local_to_hw(local), | |
91 | changed_flags, &new_flags, | |
92 | local->mdev->mc_count, | |
93 | local->mdev->mc_list); | |
94 | ||
95 | WARN_ON(new_flags & (1<<31)); | |
96 | ||
97 | local->filter_flags = new_flags & ~(1<<31); | |
98 | } | |
99 | ||
b2c258fb | 100 | /* master interface */ |
f0706e82 | 101 | |
b2c258fb JB |
102 | static int ieee80211_master_open(struct net_device *dev) |
103 | { | |
104 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
105 | struct ieee80211_sub_if_data *sdata; | |
106 | int res = -EOPNOTSUPP; | |
f0706e82 | 107 | |
79010420 JB |
108 | /* we hold the RTNL here so can safely walk the list */ |
109 | list_for_each_entry(sdata, &local->interfaces, list) { | |
b2c258fb JB |
110 | if (sdata->dev != dev && netif_running(sdata->dev)) { |
111 | res = 0; | |
112 | break; | |
113 | } | |
114 | } | |
b2c258fb JB |
115 | return res; |
116 | } | |
f0706e82 | 117 | |
b2c258fb | 118 | static int ieee80211_master_stop(struct net_device *dev) |
f0706e82 | 119 | { |
b2c258fb JB |
120 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); |
121 | struct ieee80211_sub_if_data *sdata; | |
f0706e82 | 122 | |
79010420 JB |
123 | /* we hold the RTNL here so can safely walk the list */ |
124 | list_for_each_entry(sdata, &local->interfaces, list) | |
b2c258fb JB |
125 | if (sdata->dev != dev && netif_running(sdata->dev)) |
126 | dev_close(sdata->dev); | |
f0706e82 | 127 | |
b2c258fb JB |
128 | return 0; |
129 | } | |
f0706e82 | 130 | |
4150c572 JB |
131 | static void ieee80211_master_set_multicast_list(struct net_device *dev) |
132 | { | |
133 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
134 | ||
135 | ieee80211_configure_filter(local); | |
136 | } | |
137 | ||
b2c258fb | 138 | /* regular interfaces */ |
f0706e82 | 139 | |
b2c258fb | 140 | static int ieee80211_change_mtu(struct net_device *dev, int new_mtu) |
f0706e82 | 141 | { |
f7a92144 LCC |
142 | int meshhdrlen; |
143 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
144 | ||
145 | meshhdrlen = (sdata->vif.type == IEEE80211_IF_TYPE_MESH_POINT) ? 5 : 0; | |
146 | ||
b2c258fb JB |
147 | /* FIX: what would be proper limits for MTU? |
148 | * This interface uses 802.3 frames. */ | |
f7a92144 LCC |
149 | if (new_mtu < 256 || |
150 | new_mtu > IEEE80211_MAX_DATA_LEN - 24 - 6 - meshhdrlen) { | |
b2c258fb JB |
151 | printk(KERN_WARNING "%s: invalid MTU %d\n", |
152 | dev->name, new_mtu); | |
153 | return -EINVAL; | |
154 | } | |
f0706e82 | 155 | |
b2c258fb JB |
156 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
157 | printk(KERN_DEBUG "%s: setting MTU %d\n", dev->name, new_mtu); | |
158 | #endif /* CONFIG_MAC80211_VERBOSE_DEBUG */ | |
159 | dev->mtu = new_mtu; | |
f0706e82 JB |
160 | return 0; |
161 | } | |
162 | ||
b2c258fb JB |
163 | static inline int identical_mac_addr_allowed(int type1, int type2) |
164 | { | |
165 | return (type1 == IEEE80211_IF_TYPE_MNTR || | |
166 | type2 == IEEE80211_IF_TYPE_MNTR || | |
167 | (type1 == IEEE80211_IF_TYPE_AP && | |
168 | type2 == IEEE80211_IF_TYPE_WDS) || | |
169 | (type1 == IEEE80211_IF_TYPE_WDS && | |
170 | (type2 == IEEE80211_IF_TYPE_WDS || | |
171 | type2 == IEEE80211_IF_TYPE_AP)) || | |
172 | (type1 == IEEE80211_IF_TYPE_AP && | |
173 | type2 == IEEE80211_IF_TYPE_VLAN) || | |
174 | (type1 == IEEE80211_IF_TYPE_VLAN && | |
175 | (type2 == IEEE80211_IF_TYPE_AP || | |
176 | type2 == IEEE80211_IF_TYPE_VLAN))); | |
177 | } | |
f0706e82 | 178 | |
b2c258fb | 179 | static int ieee80211_open(struct net_device *dev) |
e2ebc74d | 180 | { |
b2c258fb JB |
181 | struct ieee80211_sub_if_data *sdata, *nsdata; |
182 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
183 | struct ieee80211_if_init_conf conf; | |
184 | int res; | |
ceffefd1 | 185 | bool need_hw_reconfig = 0; |
44213b5e | 186 | struct sta_info *sta; |
f0706e82 | 187 | |
b2c258fb | 188 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
0ec3ca44 | 189 | |
79010420 JB |
190 | /* we hold the RTNL here so can safely walk the list */ |
191 | list_for_each_entry(nsdata, &local->interfaces, list) { | |
b2c258fb | 192 | struct net_device *ndev = nsdata->dev; |
e2ebc74d | 193 | |
665e8aaf JB |
194 | if (ndev != dev && ndev != local->mdev && netif_running(ndev)) { |
195 | /* | |
196 | * Allow only a single IBSS interface to be up at any | |
197 | * time. This is restricted because beacon distribution | |
198 | * cannot work properly if both are in the same IBSS. | |
199 | * | |
200 | * To remove this restriction we'd have to disallow them | |
201 | * from setting the same SSID on different IBSS interfaces | |
202 | * belonging to the same hardware. Then, however, we're | |
203 | * faced with having to adopt two different TSF timers... | |
204 | */ | |
205 | if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS && | |
206 | nsdata->vif.type == IEEE80211_IF_TYPE_IBSS) | |
207 | return -EBUSY; | |
208 | ||
209 | /* | |
210 | * Disallow multiple IBSS/STA mode interfaces. | |
211 | * | |
212 | * This is a technical restriction, it is possible although | |
213 | * most likely not IEEE 802.11 compliant to have multiple | |
214 | * STAs with just a single hardware (the TSF timer will not | |
215 | * be adjusted properly.) | |
216 | * | |
217 | * However, because mac80211 uses the master device's BSS | |
218 | * information for each STA/IBSS interface, doing this will | |
219 | * currently corrupt that BSS information completely, unless, | |
220 | * a not very useful case, both STAs are associated to the | |
221 | * same BSS. | |
222 | * | |
223 | * To remove this restriction, the BSS information needs to | |
224 | * be embedded in the STA/IBSS mode sdata instead of using | |
225 | * the master device's BSS structure. | |
226 | */ | |
227 | if ((sdata->vif.type == IEEE80211_IF_TYPE_STA || | |
228 | sdata->vif.type == IEEE80211_IF_TYPE_IBSS) && | |
229 | (nsdata->vif.type == IEEE80211_IF_TYPE_STA || | |
230 | nsdata->vif.type == IEEE80211_IF_TYPE_IBSS)) | |
231 | return -EBUSY; | |
232 | ||
233 | /* | |
234 | * The remaining checks are only performed for interfaces | |
235 | * with the same MAC address. | |
236 | */ | |
237 | if (compare_ether_addr(dev->dev_addr, ndev->dev_addr)) | |
238 | continue; | |
239 | ||
0ec3ca44 JB |
240 | /* |
241 | * check whether it may have the same address | |
242 | */ | |
51fb61e7 JB |
243 | if (!identical_mac_addr_allowed(sdata->vif.type, |
244 | nsdata->vif.type)) | |
0ec3ca44 | 245 | return -ENOTUNIQ; |
0ec3ca44 JB |
246 | |
247 | /* | |
248 | * can only add VLANs to enabled APs | |
249 | */ | |
51fb61e7 | 250 | if (sdata->vif.type == IEEE80211_IF_TYPE_VLAN && |
665e8aaf | 251 | nsdata->vif.type == IEEE80211_IF_TYPE_AP) |
0ec3ca44 | 252 | sdata->u.vlan.ap = nsdata; |
b2c258fb JB |
253 | } |
254 | } | |
f0706e82 | 255 | |
51fb61e7 | 256 | switch (sdata->vif.type) { |
0ec3ca44 JB |
257 | case IEEE80211_IF_TYPE_WDS: |
258 | if (is_zero_ether_addr(sdata->u.wds.remote_addr)) | |
259 | return -ENOLINK; | |
44213b5e JB |
260 | |
261 | /* Create STA entry for the WDS peer */ | |
262 | sta = sta_info_alloc(sdata, sdata->u.wds.remote_addr, | |
263 | GFP_KERNEL); | |
264 | if (!sta) | |
265 | return -ENOMEM; | |
266 | ||
267 | sta->flags |= WLAN_STA_AUTHORIZED; | |
268 | ||
269 | res = sta_info_insert(sta); | |
270 | if (res) { | |
271 | sta_info_destroy(sta); | |
272 | return res; | |
273 | } | |
0ec3ca44 JB |
274 | break; |
275 | case IEEE80211_IF_TYPE_VLAN: | |
276 | if (!sdata->u.vlan.ap) | |
277 | return -ENOLINK; | |
278 | break; | |
fb1c1cd6 | 279 | case IEEE80211_IF_TYPE_AP: |
fb1c1cd6 JB |
280 | case IEEE80211_IF_TYPE_STA: |
281 | case IEEE80211_IF_TYPE_MNTR: | |
282 | case IEEE80211_IF_TYPE_IBSS: | |
6032f934 | 283 | case IEEE80211_IF_TYPE_MESH_POINT: |
fb1c1cd6 JB |
284 | /* no special treatment */ |
285 | break; | |
a2897552 JB |
286 | case IEEE80211_IF_TYPE_INVALID: |
287 | /* cannot happen */ | |
288 | WARN_ON(1); | |
289 | break; | |
0ec3ca44 | 290 | } |
f0706e82 | 291 | |
b2c258fb JB |
292 | if (local->open_count == 0) { |
293 | res = 0; | |
4150c572 JB |
294 | if (local->ops->start) |
295 | res = local->ops->start(local_to_hw(local)); | |
296 | if (res) | |
b2c258fb | 297 | return res; |
ceffefd1 | 298 | need_hw_reconfig = 1; |
cdcb006f | 299 | ieee80211_led_radio(local, local->hw.conf.radio_enabled); |
b2c258fb | 300 | } |
f0706e82 | 301 | |
51fb61e7 | 302 | switch (sdata->vif.type) { |
0ec3ca44 JB |
303 | case IEEE80211_IF_TYPE_VLAN: |
304 | list_add(&sdata->u.vlan.list, &sdata->u.vlan.ap->u.ap.vlans); | |
305 | /* no need to tell driver */ | |
306 | break; | |
4150c572 | 307 | case IEEE80211_IF_TYPE_MNTR: |
3d30d949 MW |
308 | if (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES) { |
309 | local->cooked_mntrs++; | |
310 | break; | |
311 | } | |
312 | ||
4150c572 | 313 | /* must be before the call to ieee80211_configure_filter */ |
b2c258fb | 314 | local->monitors++; |
8cc9a739 | 315 | if (local->monitors == 1) |
4150c572 | 316 | local->hw.conf.flags |= IEEE80211_CONF_RADIOTAP; |
8cc9a739 MW |
317 | |
318 | if (sdata->u.mntr_flags & MONITOR_FLAG_FCSFAIL) | |
319 | local->fif_fcsfail++; | |
320 | if (sdata->u.mntr_flags & MONITOR_FLAG_PLCPFAIL) | |
321 | local->fif_plcpfail++; | |
322 | if (sdata->u.mntr_flags & MONITOR_FLAG_CONTROL) | |
323 | local->fif_control++; | |
324 | if (sdata->u.mntr_flags & MONITOR_FLAG_OTHER_BSS) | |
325 | local->fif_other_bss++; | |
326 | ||
327 | netif_tx_lock_bh(local->mdev); | |
328 | ieee80211_configure_filter(local); | |
329 | netif_tx_unlock_bh(local->mdev); | |
4150c572 JB |
330 | break; |
331 | case IEEE80211_IF_TYPE_STA: | |
332 | case IEEE80211_IF_TYPE_IBSS: | |
333 | sdata->u.sta.flags &= ~IEEE80211_STA_PREV_BSSID_SET; | |
334 | /* fall through */ | |
335 | default: | |
32bfd35d | 336 | conf.vif = &sdata->vif; |
51fb61e7 | 337 | conf.type = sdata->vif.type; |
4150c572 JB |
338 | conf.mac_addr = dev->dev_addr; |
339 | res = local->ops->add_interface(local_to_hw(local), &conf); | |
340 | if (res && !local->open_count && local->ops->stop) | |
341 | local->ops->stop(local_to_hw(local)); | |
342 | if (res) | |
343 | return res; | |
344 | ||
b2c258fb | 345 | ieee80211_if_config(dev); |
d9430a32 | 346 | ieee80211_reset_erp_info(dev); |
11a843b7 | 347 | ieee80211_enable_keys(sdata); |
4150c572 | 348 | |
51fb61e7 | 349 | if (sdata->vif.type == IEEE80211_IF_TYPE_STA && |
ddd3d2be | 350 | !(sdata->flags & IEEE80211_SDATA_USERSPACE_MLME)) |
4150c572 JB |
351 | netif_carrier_off(dev); |
352 | else | |
353 | netif_carrier_on(dev); | |
d9430a32 | 354 | } |
f0706e82 | 355 | |
4150c572 JB |
356 | if (local->open_count == 0) { |
357 | res = dev_open(local->mdev); | |
358 | WARN_ON(res); | |
4150c572 JB |
359 | tasklet_enable(&local->tx_pending_tasklet); |
360 | tasklet_enable(&local->tasklet); | |
361 | } | |
362 | ||
c1428b3f JB |
363 | /* |
364 | * set_multicast_list will be invoked by the networking core | |
365 | * which will check whether any increments here were done in | |
366 | * error and sync them down to the hardware as filter flags. | |
367 | */ | |
368 | if (sdata->flags & IEEE80211_SDATA_ALLMULTI) | |
369 | atomic_inc(&local->iff_allmultis); | |
370 | ||
371 | if (sdata->flags & IEEE80211_SDATA_PROMISC) | |
372 | atomic_inc(&local->iff_promiscs); | |
373 | ||
4150c572 | 374 | local->open_count++; |
ceffefd1 MB |
375 | if (need_hw_reconfig) |
376 | ieee80211_hw_config(local); | |
f0706e82 | 377 | |
b2c258fb | 378 | netif_start_queue(dev); |
4150c572 | 379 | |
b2c258fb | 380 | return 0; |
f0706e82 | 381 | } |
f0706e82 | 382 | |
4150c572 | 383 | static int ieee80211_stop(struct net_device *dev) |
f0706e82 | 384 | { |
44213b5e JB |
385 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
386 | struct ieee80211_local *local = sdata->local; | |
4150c572 | 387 | struct ieee80211_if_init_conf conf; |
07db2183 RR |
388 | struct sta_info *sta; |
389 | int i; | |
4150c572 | 390 | |
44213b5e JB |
391 | /* |
392 | * Stop TX on this interface first. | |
393 | */ | |
394 | netif_stop_queue(dev); | |
4150c572 | 395 | |
44213b5e JB |
396 | /* |
397 | * Now delete all active aggregation sessions. | |
398 | */ | |
d0709a65 JB |
399 | rcu_read_lock(); |
400 | ||
401 | list_for_each_entry_rcu(sta, &local->sta_list, list) { | |
402 | if (sta->sdata == sdata) | |
5b3d71d9 | 403 | for (i = 0; i < STA_TID_NUM; i++) |
d0709a65 | 404 | ieee80211_sta_stop_rx_ba_session(sdata->dev, |
5b3d71d9 RR |
405 | sta->addr, i, |
406 | WLAN_BACK_RECIPIENT, | |
07db2183 RR |
407 | WLAN_REASON_QSTA_LEAVE_QBSS); |
408 | } | |
409 | ||
d0709a65 JB |
410 | rcu_read_unlock(); |
411 | ||
44213b5e JB |
412 | /* |
413 | * Remove all stations associated with this interface. | |
414 | * | |
415 | * This must be done before calling ops->remove_interface() | |
416 | * because otherwise we can later invoke ops->sta_notify() | |
417 | * whenever the STAs are removed, and that invalidates driver | |
418 | * assumptions about always getting a vif pointer that is valid | |
419 | * (because if we remove a STA after ops->remove_interface() | |
420 | * the driver will have removed the vif info already!) | |
421 | * | |
422 | * We could relax this and only unlink the stations from the | |
423 | * hash table and list but keep them on a per-sdata list that | |
424 | * will be inserted back again when the interface is brought | |
425 | * up again, but I don't currently see a use case for that, | |
426 | * except with WDS which gets a STA entry created when it is | |
427 | * brought up. | |
428 | */ | |
429 | sta_info_flush(local, sdata); | |
4150c572 | 430 | |
c1428b3f JB |
431 | /* |
432 | * Don't count this interface for promisc/allmulti while it | |
433 | * is down. dev_mc_unsync() will invoke set_multicast_list | |
434 | * on the master interface which will sync these down to the | |
435 | * hardware as filter flags. | |
436 | */ | |
437 | if (sdata->flags & IEEE80211_SDATA_ALLMULTI) | |
438 | atomic_dec(&local->iff_allmultis); | |
439 | ||
440 | if (sdata->flags & IEEE80211_SDATA_PROMISC) | |
441 | atomic_dec(&local->iff_promiscs); | |
442 | ||
4150c572 JB |
443 | dev_mc_unsync(local->mdev, dev); |
444 | ||
5dfdaf58 | 445 | /* APs need special treatment */ |
51fb61e7 | 446 | if (sdata->vif.type == IEEE80211_IF_TYPE_AP) { |
0ec3ca44 | 447 | struct ieee80211_sub_if_data *vlan, *tmp; |
5dfdaf58 | 448 | struct beacon_data *old_beacon = sdata->u.ap.beacon; |
0ec3ca44 | 449 | |
5dfdaf58 JB |
450 | /* remove beacon */ |
451 | rcu_assign_pointer(sdata->u.ap.beacon, NULL); | |
452 | synchronize_rcu(); | |
453 | kfree(old_beacon); | |
454 | ||
455 | /* down all dependent devices, that is VLANs */ | |
0ec3ca44 JB |
456 | list_for_each_entry_safe(vlan, tmp, &sdata->u.ap.vlans, |
457 | u.vlan.list) | |
458 | dev_close(vlan->dev); | |
459 | WARN_ON(!list_empty(&sdata->u.ap.vlans)); | |
460 | } | |
461 | ||
4150c572 | 462 | local->open_count--; |
f0706e82 | 463 | |
51fb61e7 | 464 | switch (sdata->vif.type) { |
0ec3ca44 JB |
465 | case IEEE80211_IF_TYPE_VLAN: |
466 | list_del(&sdata->u.vlan.list); | |
467 | sdata->u.vlan.ap = NULL; | |
468 | /* no need to tell driver */ | |
469 | break; | |
4150c572 | 470 | case IEEE80211_IF_TYPE_MNTR: |
3d30d949 MW |
471 | if (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES) { |
472 | local->cooked_mntrs--; | |
473 | break; | |
474 | } | |
475 | ||
4150c572 | 476 | local->monitors--; |
8cc9a739 | 477 | if (local->monitors == 0) |
8b393f1d | 478 | local->hw.conf.flags &= ~IEEE80211_CONF_RADIOTAP; |
8cc9a739 MW |
479 | |
480 | if (sdata->u.mntr_flags & MONITOR_FLAG_FCSFAIL) | |
481 | local->fif_fcsfail--; | |
482 | if (sdata->u.mntr_flags & MONITOR_FLAG_PLCPFAIL) | |
483 | local->fif_plcpfail--; | |
484 | if (sdata->u.mntr_flags & MONITOR_FLAG_CONTROL) | |
485 | local->fif_control--; | |
486 | if (sdata->u.mntr_flags & MONITOR_FLAG_OTHER_BSS) | |
487 | local->fif_other_bss--; | |
488 | ||
489 | netif_tx_lock_bh(local->mdev); | |
490 | ieee80211_configure_filter(local); | |
491 | netif_tx_unlock_bh(local->mdev); | |
4150c572 | 492 | break; |
f7a92144 | 493 | case IEEE80211_IF_TYPE_MESH_POINT: |
b2c258fb JB |
494 | case IEEE80211_IF_TYPE_STA: |
495 | case IEEE80211_IF_TYPE_IBSS: | |
496 | sdata->u.sta.state = IEEE80211_DISABLED; | |
497 | del_timer_sync(&sdata->u.sta.timer); | |
2a8a9a88 | 498 | /* |
79010420 JB |
499 | * When we get here, the interface is marked down. |
500 | * Call synchronize_rcu() to wait for the RX path | |
501 | * should it be using the interface and enqueuing | |
502 | * frames at this very time on another CPU. | |
2a8a9a88 | 503 | */ |
79010420 | 504 | synchronize_rcu(); |
b2c258fb | 505 | skb_queue_purge(&sdata->u.sta.skb_queue); |
2a8a9a88 | 506 | |
ece8eddd ZY |
507 | if (local->scan_dev == sdata->dev) { |
508 | if (!local->ops->hw_scan) { | |
509 | local->sta_sw_scanning = 0; | |
510 | cancel_delayed_work(&local->scan_work); | |
511 | } else | |
512 | local->sta_hw_scanning = 0; | |
b2c258fb | 513 | } |
ece8eddd | 514 | |
b2c258fb | 515 | flush_workqueue(local->hw.workqueue); |
a10605e5 ZY |
516 | |
517 | sdata->u.sta.flags &= ~IEEE80211_STA_PRIVACY_INVOKED; | |
518 | kfree(sdata->u.sta.extra_ie); | |
519 | sdata->u.sta.extra_ie = NULL; | |
520 | sdata->u.sta.extra_ie_len = 0; | |
4150c572 JB |
521 | /* fall through */ |
522 | default: | |
32bfd35d | 523 | conf.vif = &sdata->vif; |
51fb61e7 | 524 | conf.type = sdata->vif.type; |
4150c572 | 525 | conf.mac_addr = dev->dev_addr; |
11a843b7 JB |
526 | /* disable all keys for as long as this netdev is down */ |
527 | ieee80211_disable_keys(sdata); | |
4150c572 | 528 | local->ops->remove_interface(local_to_hw(local), &conf); |
f0706e82 JB |
529 | } |
530 | ||
b2c258fb JB |
531 | if (local->open_count == 0) { |
532 | if (netif_running(local->mdev)) | |
533 | dev_close(local->mdev); | |
4150c572 | 534 | |
b2c258fb JB |
535 | if (local->ops->stop) |
536 | local->ops->stop(local_to_hw(local)); | |
4150c572 | 537 | |
cdcb006f ID |
538 | ieee80211_led_radio(local, 0); |
539 | ||
b2c258fb JB |
540 | tasklet_disable(&local->tx_pending_tasklet); |
541 | tasklet_disable(&local->tasklet); | |
542 | } | |
b2c258fb | 543 | |
f0706e82 JB |
544 | return 0; |
545 | } | |
546 | ||
eadc8d9e RR |
547 | int ieee80211_start_tx_ba_session(struct ieee80211_hw *hw, u8 *ra, u16 tid) |
548 | { | |
549 | struct ieee80211_local *local = hw_to_local(hw); | |
550 | struct sta_info *sta; | |
551 | struct ieee80211_sub_if_data *sdata; | |
552 | u16 start_seq_num = 0; | |
553 | u8 *state; | |
554 | int ret; | |
555 | DECLARE_MAC_BUF(mac); | |
556 | ||
557 | if (tid >= STA_TID_NUM) | |
558 | return -EINVAL; | |
559 | ||
560 | #ifdef CONFIG_MAC80211_HT_DEBUG | |
561 | printk(KERN_DEBUG "Open BA session requested for %s tid %u\n", | |
562 | print_mac(mac, ra), tid); | |
563 | #endif /* CONFIG_MAC80211_HT_DEBUG */ | |
564 | ||
d0709a65 JB |
565 | rcu_read_lock(); |
566 | ||
eadc8d9e RR |
567 | sta = sta_info_get(local, ra); |
568 | if (!sta) { | |
569 | printk(KERN_DEBUG "Could not find the station\n"); | |
d0709a65 | 570 | rcu_read_unlock(); |
eadc8d9e RR |
571 | return -ENOENT; |
572 | } | |
573 | ||
574 | spin_lock_bh(&sta->ampdu_mlme.ampdu_tx); | |
575 | ||
576 | /* we have tried too many times, receiver does not want A-MPDU */ | |
577 | if (sta->ampdu_mlme.tid_tx[tid].addba_req_num > HT_AGG_MAX_RETRIES) { | |
578 | ret = -EBUSY; | |
579 | goto start_ba_exit; | |
580 | } | |
581 | ||
582 | state = &sta->ampdu_mlme.tid_tx[tid].state; | |
583 | /* check if the TID is not in aggregation flow already */ | |
584 | if (*state != HT_AGG_STATE_IDLE) { | |
585 | #ifdef CONFIG_MAC80211_HT_DEBUG | |
586 | printk(KERN_DEBUG "BA request denied - session is not " | |
587 | "idle on tid %u\n", tid); | |
588 | #endif /* CONFIG_MAC80211_HT_DEBUG */ | |
589 | ret = -EAGAIN; | |
590 | goto start_ba_exit; | |
591 | } | |
592 | ||
593 | /* ensure that TX flow won't interrupt us | |
594 | * until the end of the call to requeue function */ | |
595 | spin_lock_bh(&local->mdev->queue_lock); | |
596 | ||
597 | /* create a new queue for this aggregation */ | |
9e723492 | 598 | ret = ieee80211_ht_agg_queue_add(local, sta, tid); |
eadc8d9e RR |
599 | |
600 | /* case no queue is available to aggregation | |
601 | * don't switch to aggregation */ | |
602 | if (ret) { | |
603 | #ifdef CONFIG_MAC80211_HT_DEBUG | |
604 | printk(KERN_DEBUG "BA request denied - no queue available for" | |
605 | " tid %d\n", tid); | |
606 | #endif /* CONFIG_MAC80211_HT_DEBUG */ | |
607 | spin_unlock_bh(&local->mdev->queue_lock); | |
608 | goto start_ba_exit; | |
609 | } | |
d0709a65 | 610 | sdata = sta->sdata; |
eadc8d9e RR |
611 | |
612 | /* Ok, the Addba frame hasn't been sent yet, but if the driver calls the | |
613 | * call back right away, it must see that the flow has begun */ | |
614 | *state |= HT_ADDBA_REQUESTED_MSK; | |
615 | ||
616 | if (local->ops->ampdu_action) | |
617 | ret = local->ops->ampdu_action(hw, IEEE80211_AMPDU_TX_START, | |
618 | ra, tid, &start_seq_num); | |
619 | ||
620 | if (ret) { | |
621 | /* No need to requeue the packets in the agg queue, since we | |
622 | * held the tx lock: no packet could be enqueued to the newly | |
623 | * allocated queue */ | |
9e723492 | 624 | ieee80211_ht_agg_queue_remove(local, sta, tid, 0); |
eadc8d9e RR |
625 | #ifdef CONFIG_MAC80211_HT_DEBUG |
626 | printk(KERN_DEBUG "BA request denied - HW or queue unavailable" | |
627 | " for tid %d\n", tid); | |
628 | #endif /* CONFIG_MAC80211_HT_DEBUG */ | |
629 | spin_unlock_bh(&local->mdev->queue_lock); | |
630 | *state = HT_AGG_STATE_IDLE; | |
631 | goto start_ba_exit; | |
632 | } | |
633 | ||
634 | /* Will put all the packets in the new SW queue */ | |
9e723492 | 635 | ieee80211_requeue(local, ieee802_1d_to_ac[tid]); |
eadc8d9e RR |
636 | spin_unlock_bh(&local->mdev->queue_lock); |
637 | ||
638 | /* We have most probably almost emptied the legacy queue */ | |
639 | /* ieee80211_wake_queue(local_to_hw(local), ieee802_1d_to_ac[tid]); */ | |
640 | ||
641 | /* send an addBA request */ | |
642 | sta->ampdu_mlme.dialog_token_allocator++; | |
643 | sta->ampdu_mlme.tid_tx[tid].dialog_token = | |
644 | sta->ampdu_mlme.dialog_token_allocator; | |
645 | sta->ampdu_mlme.tid_tx[tid].ssn = start_seq_num; | |
646 | ||
d0709a65 | 647 | ieee80211_send_addba_request(sta->sdata->dev, ra, tid, |
eadc8d9e RR |
648 | sta->ampdu_mlme.tid_tx[tid].dialog_token, |
649 | sta->ampdu_mlme.tid_tx[tid].ssn, | |
650 | 0x40, 5000); | |
651 | ||
652 | /* activate the timer for the recipient's addBA response */ | |
653 | sta->ampdu_mlme.tid_tx[tid].addba_resp_timer.expires = | |
654 | jiffies + ADDBA_RESP_INTERVAL; | |
655 | add_timer(&sta->ampdu_mlme.tid_tx[tid].addba_resp_timer); | |
656 | printk(KERN_DEBUG "activated addBA response timer on tid %d\n", tid); | |
657 | ||
658 | start_ba_exit: | |
659 | spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx); | |
d0709a65 | 660 | rcu_read_unlock(); |
eadc8d9e RR |
661 | return ret; |
662 | } | |
663 | EXPORT_SYMBOL(ieee80211_start_tx_ba_session); | |
664 | ||
665 | int ieee80211_stop_tx_ba_session(struct ieee80211_hw *hw, | |
666 | u8 *ra, u16 tid, | |
667 | enum ieee80211_back_parties initiator) | |
668 | { | |
669 | struct ieee80211_local *local = hw_to_local(hw); | |
670 | struct sta_info *sta; | |
671 | u8 *state; | |
672 | int ret = 0; | |
673 | DECLARE_MAC_BUF(mac); | |
674 | ||
675 | if (tid >= STA_TID_NUM) | |
676 | return -EINVAL; | |
677 | ||
678 | #ifdef CONFIG_MAC80211_HT_DEBUG | |
679 | printk(KERN_DEBUG "Stop a BA session requested for %s tid %u\n", | |
680 | print_mac(mac, ra), tid); | |
681 | #endif /* CONFIG_MAC80211_HT_DEBUG */ | |
682 | ||
d0709a65 | 683 | rcu_read_lock(); |
eadc8d9e | 684 | sta = sta_info_get(local, ra); |
d0709a65 JB |
685 | if (!sta) { |
686 | rcu_read_unlock(); | |
eadc8d9e | 687 | return -ENOENT; |
d0709a65 | 688 | } |
eadc8d9e RR |
689 | |
690 | /* check if the TID is in aggregation */ | |
691 | state = &sta->ampdu_mlme.tid_tx[tid].state; | |
692 | spin_lock_bh(&sta->ampdu_mlme.ampdu_tx); | |
693 | ||
694 | if (*state != HT_AGG_STATE_OPERATIONAL) { | |
695 | #ifdef CONFIG_MAC80211_HT_DEBUG | |
696 | printk(KERN_DEBUG "Try to stop Tx aggregation on" | |
697 | " non active TID\n"); | |
698 | #endif /* CONFIG_MAC80211_HT_DEBUG */ | |
699 | ret = -ENOENT; | |
700 | goto stop_BA_exit; | |
701 | } | |
702 | ||
703 | ieee80211_stop_queue(hw, sta->tid_to_tx_q[tid]); | |
704 | ||
705 | *state = HT_AGG_STATE_REQ_STOP_BA_MSK | | |
706 | (initiator << HT_AGG_STATE_INITIATOR_SHIFT); | |
707 | ||
708 | if (local->ops->ampdu_action) | |
709 | ret = local->ops->ampdu_action(hw, IEEE80211_AMPDU_TX_STOP, | |
710 | ra, tid, NULL); | |
711 | ||
712 | /* case HW denied going back to legacy */ | |
713 | if (ret) { | |
714 | WARN_ON(ret != -EBUSY); | |
715 | *state = HT_AGG_STATE_OPERATIONAL; | |
716 | ieee80211_wake_queue(hw, sta->tid_to_tx_q[tid]); | |
717 | goto stop_BA_exit; | |
718 | } | |
719 | ||
720 | stop_BA_exit: | |
721 | spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx); | |
d0709a65 | 722 | rcu_read_unlock(); |
eadc8d9e RR |
723 | return ret; |
724 | } | |
725 | EXPORT_SYMBOL(ieee80211_stop_tx_ba_session); | |
726 | ||
727 | void ieee80211_start_tx_ba_cb(struct ieee80211_hw *hw, u8 *ra, u16 tid) | |
728 | { | |
729 | struct ieee80211_local *local = hw_to_local(hw); | |
730 | struct sta_info *sta; | |
731 | u8 *state; | |
732 | DECLARE_MAC_BUF(mac); | |
733 | ||
734 | if (tid >= STA_TID_NUM) { | |
735 | printk(KERN_DEBUG "Bad TID value: tid = %d (>= %d)\n", | |
736 | tid, STA_TID_NUM); | |
737 | return; | |
738 | } | |
739 | ||
d0709a65 | 740 | rcu_read_lock(); |
eadc8d9e RR |
741 | sta = sta_info_get(local, ra); |
742 | if (!sta) { | |
d0709a65 | 743 | rcu_read_unlock(); |
eadc8d9e RR |
744 | printk(KERN_DEBUG "Could not find station: %s\n", |
745 | print_mac(mac, ra)); | |
746 | return; | |
747 | } | |
748 | ||
749 | state = &sta->ampdu_mlme.tid_tx[tid].state; | |
750 | spin_lock_bh(&sta->ampdu_mlme.ampdu_tx); | |
751 | ||
752 | if (!(*state & HT_ADDBA_REQUESTED_MSK)) { | |
753 | printk(KERN_DEBUG "addBA was not requested yet, state is %d\n", | |
754 | *state); | |
755 | spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx); | |
d0709a65 | 756 | rcu_read_unlock(); |
eadc8d9e RR |
757 | return; |
758 | } | |
759 | ||
760 | WARN_ON_ONCE(*state & HT_ADDBA_DRV_READY_MSK); | |
761 | ||
762 | *state |= HT_ADDBA_DRV_READY_MSK; | |
763 | ||
764 | if (*state == HT_AGG_STATE_OPERATIONAL) { | |
765 | printk(KERN_DEBUG "Aggregation is on for tid %d \n", tid); | |
766 | ieee80211_wake_queue(hw, sta->tid_to_tx_q[tid]); | |
767 | } | |
768 | spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx); | |
d0709a65 | 769 | rcu_read_unlock(); |
eadc8d9e RR |
770 | } |
771 | EXPORT_SYMBOL(ieee80211_start_tx_ba_cb); | |
772 | ||
773 | void ieee80211_stop_tx_ba_cb(struct ieee80211_hw *hw, u8 *ra, u8 tid) | |
774 | { | |
775 | struct ieee80211_local *local = hw_to_local(hw); | |
776 | struct sta_info *sta; | |
777 | u8 *state; | |
778 | int agg_queue; | |
779 | DECLARE_MAC_BUF(mac); | |
780 | ||
781 | if (tid >= STA_TID_NUM) { | |
782 | printk(KERN_DEBUG "Bad TID value: tid = %d (>= %d)\n", | |
783 | tid, STA_TID_NUM); | |
784 | return; | |
785 | } | |
786 | ||
787 | printk(KERN_DEBUG "Stop a BA session requested on DA %s tid %d\n", | |
788 | print_mac(mac, ra), tid); | |
789 | ||
d0709a65 | 790 | rcu_read_lock(); |
eadc8d9e RR |
791 | sta = sta_info_get(local, ra); |
792 | if (!sta) { | |
793 | printk(KERN_DEBUG "Could not find station: %s\n", | |
794 | print_mac(mac, ra)); | |
d0709a65 | 795 | rcu_read_unlock(); |
eadc8d9e RR |
796 | return; |
797 | } | |
798 | state = &sta->ampdu_mlme.tid_tx[tid].state; | |
799 | ||
800 | spin_lock_bh(&sta->ampdu_mlme.ampdu_tx); | |
801 | if ((*state & HT_AGG_STATE_REQ_STOP_BA_MSK) == 0) { | |
802 | printk(KERN_DEBUG "unexpected callback to A-MPDU stop\n"); | |
eadc8d9e | 803 | spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx); |
d0709a65 | 804 | rcu_read_unlock(); |
eadc8d9e RR |
805 | return; |
806 | } | |
807 | ||
808 | if (*state & HT_AGG_STATE_INITIATOR_MSK) | |
d0709a65 | 809 | ieee80211_send_delba(sta->sdata->dev, ra, tid, |
eadc8d9e RR |
810 | WLAN_BACK_INITIATOR, WLAN_REASON_QSTA_NOT_USE); |
811 | ||
812 | agg_queue = sta->tid_to_tx_q[tid]; | |
813 | ||
814 | /* avoid ordering issues: we are the only one that can modify | |
815 | * the content of the qdiscs */ | |
816 | spin_lock_bh(&local->mdev->queue_lock); | |
817 | /* remove the queue for this aggregation */ | |
9e723492 | 818 | ieee80211_ht_agg_queue_remove(local, sta, tid, 1); |
eadc8d9e RR |
819 | spin_unlock_bh(&local->mdev->queue_lock); |
820 | ||
821 | /* we just requeued the all the frames that were in the removed | |
822 | * queue, and since we might miss a softirq we do netif_schedule. | |
823 | * ieee80211_wake_queue is not used here as this queue is not | |
824 | * necessarily stopped */ | |
825 | netif_schedule(local->mdev); | |
826 | *state = HT_AGG_STATE_IDLE; | |
827 | sta->ampdu_mlme.tid_tx[tid].addba_req_num = 0; | |
828 | spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx); | |
829 | ||
d0709a65 | 830 | rcu_read_unlock(); |
eadc8d9e RR |
831 | } |
832 | EXPORT_SYMBOL(ieee80211_stop_tx_ba_cb); | |
833 | ||
834 | void ieee80211_start_tx_ba_cb_irqsafe(struct ieee80211_hw *hw, | |
835 | const u8 *ra, u16 tid) | |
836 | { | |
837 | struct ieee80211_local *local = hw_to_local(hw); | |
838 | struct ieee80211_ra_tid *ra_tid; | |
839 | struct sk_buff *skb = dev_alloc_skb(0); | |
840 | ||
841 | if (unlikely(!skb)) { | |
842 | if (net_ratelimit()) | |
843 | printk(KERN_WARNING "%s: Not enough memory, " | |
844 | "dropping start BA session", skb->dev->name); | |
845 | return; | |
846 | } | |
847 | ra_tid = (struct ieee80211_ra_tid *) &skb->cb; | |
848 | memcpy(&ra_tid->ra, ra, ETH_ALEN); | |
849 | ra_tid->tid = tid; | |
850 | ||
851 | skb->pkt_type = IEEE80211_ADDBA_MSG; | |
852 | skb_queue_tail(&local->skb_queue, skb); | |
853 | tasklet_schedule(&local->tasklet); | |
854 | } | |
855 | EXPORT_SYMBOL(ieee80211_start_tx_ba_cb_irqsafe); | |
856 | ||
857 | void ieee80211_stop_tx_ba_cb_irqsafe(struct ieee80211_hw *hw, | |
858 | const u8 *ra, u16 tid) | |
859 | { | |
860 | struct ieee80211_local *local = hw_to_local(hw); | |
861 | struct ieee80211_ra_tid *ra_tid; | |
862 | struct sk_buff *skb = dev_alloc_skb(0); | |
863 | ||
864 | if (unlikely(!skb)) { | |
865 | if (net_ratelimit()) | |
866 | printk(KERN_WARNING "%s: Not enough memory, " | |
867 | "dropping stop BA session", skb->dev->name); | |
868 | return; | |
869 | } | |
870 | ra_tid = (struct ieee80211_ra_tid *) &skb->cb; | |
871 | memcpy(&ra_tid->ra, ra, ETH_ALEN); | |
872 | ra_tid->tid = tid; | |
873 | ||
874 | skb->pkt_type = IEEE80211_DELBA_MSG; | |
875 | skb_queue_tail(&local->skb_queue, skb); | |
876 | tasklet_schedule(&local->tasklet); | |
877 | } | |
878 | EXPORT_SYMBOL(ieee80211_stop_tx_ba_cb_irqsafe); | |
879 | ||
f0706e82 JB |
880 | static void ieee80211_set_multicast_list(struct net_device *dev) |
881 | { | |
882 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
883 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
4150c572 | 884 | int allmulti, promisc, sdata_allmulti, sdata_promisc; |
f0706e82 | 885 | |
4150c572 JB |
886 | allmulti = !!(dev->flags & IFF_ALLMULTI); |
887 | promisc = !!(dev->flags & IFF_PROMISC); | |
b52f2198 JB |
888 | sdata_allmulti = !!(sdata->flags & IEEE80211_SDATA_ALLMULTI); |
889 | sdata_promisc = !!(sdata->flags & IEEE80211_SDATA_PROMISC); | |
4150c572 JB |
890 | |
891 | if (allmulti != sdata_allmulti) { | |
892 | if (dev->flags & IFF_ALLMULTI) | |
53918994 | 893 | atomic_inc(&local->iff_allmultis); |
4150c572 | 894 | else |
53918994 | 895 | atomic_dec(&local->iff_allmultis); |
13262ffd | 896 | sdata->flags ^= IEEE80211_SDATA_ALLMULTI; |
f0706e82 | 897 | } |
4150c572 JB |
898 | |
899 | if (promisc != sdata_promisc) { | |
900 | if (dev->flags & IFF_PROMISC) | |
53918994 | 901 | atomic_inc(&local->iff_promiscs); |
4150c572 | 902 | else |
53918994 | 903 | atomic_dec(&local->iff_promiscs); |
13262ffd | 904 | sdata->flags ^= IEEE80211_SDATA_PROMISC; |
f0706e82 | 905 | } |
4150c572 JB |
906 | |
907 | dev_mc_sync(local->mdev, dev); | |
f0706e82 JB |
908 | } |
909 | ||
3b04ddde SH |
910 | static const struct header_ops ieee80211_header_ops = { |
911 | .create = eth_header, | |
912 | .parse = header_parse_80211, | |
913 | .rebuild = eth_rebuild_header, | |
914 | .cache = eth_header_cache, | |
915 | .cache_update = eth_header_cache_update, | |
916 | }; | |
917 | ||
f9d540ee | 918 | /* Must not be called for mdev */ |
b2c258fb | 919 | void ieee80211_if_setup(struct net_device *dev) |
f0706e82 | 920 | { |
b2c258fb JB |
921 | ether_setup(dev); |
922 | dev->hard_start_xmit = ieee80211_subif_start_xmit; | |
923 | dev->wireless_handlers = &ieee80211_iw_handler_def; | |
924 | dev->set_multicast_list = ieee80211_set_multicast_list; | |
925 | dev->change_mtu = ieee80211_change_mtu; | |
b2c258fb JB |
926 | dev->open = ieee80211_open; |
927 | dev->stop = ieee80211_stop; | |
b2c258fb JB |
928 | dev->destructor = ieee80211_if_free; |
929 | } | |
f0706e82 | 930 | |
b2c258fb JB |
931 | /* everything else */ |
932 | ||
b2c258fb JB |
933 | static int __ieee80211_if_config(struct net_device *dev, |
934 | struct sk_buff *beacon, | |
935 | struct ieee80211_tx_control *control) | |
936 | { | |
937 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
938 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
939 | struct ieee80211_if_conf conf; | |
b2c258fb JB |
940 | |
941 | if (!local->ops->config_interface || !netif_running(dev)) | |
f0706e82 | 942 | return 0; |
f0706e82 | 943 | |
b2c258fb | 944 | memset(&conf, 0, sizeof(conf)); |
51fb61e7 JB |
945 | conf.type = sdata->vif.type; |
946 | if (sdata->vif.type == IEEE80211_IF_TYPE_STA || | |
947 | sdata->vif.type == IEEE80211_IF_TYPE_IBSS) { | |
4150c572 | 948 | conf.bssid = sdata->u.sta.bssid; |
b2c258fb JB |
949 | conf.ssid = sdata->u.sta.ssid; |
950 | conf.ssid_len = sdata->u.sta.ssid_len; | |
902acc78 | 951 | } else if (ieee80211_vif_is_mesh(&sdata->vif)) { |
f7a92144 LCC |
952 | conf.beacon = beacon; |
953 | ieee80211_start_mesh(dev); | |
51fb61e7 | 954 | } else if (sdata->vif.type == IEEE80211_IF_TYPE_AP) { |
b2c258fb JB |
955 | conf.ssid = sdata->u.ap.ssid; |
956 | conf.ssid_len = sdata->u.ap.ssid_len; | |
b2c258fb JB |
957 | conf.beacon = beacon; |
958 | conf.beacon_control = control; | |
f0706e82 | 959 | } |
b2c258fb | 960 | return local->ops->config_interface(local_to_hw(local), |
32bfd35d | 961 | &sdata->vif, &conf); |
f0706e82 JB |
962 | } |
963 | ||
b2c258fb JB |
964 | int ieee80211_if_config(struct net_device *dev) |
965 | { | |
f7a92144 LCC |
966 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
967 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
968 | if (sdata->vif.type == IEEE80211_IF_TYPE_MESH_POINT && | |
969 | (local->hw.flags & IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE)) | |
970 | return ieee80211_if_config_beacon(dev); | |
b2c258fb JB |
971 | return __ieee80211_if_config(dev, NULL, NULL); |
972 | } | |
f0706e82 | 973 | |
b2c258fb | 974 | int ieee80211_if_config_beacon(struct net_device *dev) |
f0706e82 | 975 | { |
f0706e82 | 976 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); |
b2c258fb | 977 | struct ieee80211_tx_control control; |
32bfd35d | 978 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
b2c258fb | 979 | struct sk_buff *skb; |
f0706e82 | 980 | |
b2c258fb | 981 | if (!(local->hw.flags & IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE)) |
f0706e82 | 982 | return 0; |
32bfd35d JB |
983 | skb = ieee80211_beacon_get(local_to_hw(local), &sdata->vif, |
984 | &control); | |
b2c258fb JB |
985 | if (!skb) |
986 | return -ENOMEM; | |
987 | return __ieee80211_if_config(dev, skb, &control); | |
988 | } | |
f0706e82 | 989 | |
b2c258fb JB |
990 | int ieee80211_hw_config(struct ieee80211_local *local) |
991 | { | |
b2c258fb JB |
992 | struct ieee80211_channel *chan; |
993 | int ret = 0; | |
f0706e82 | 994 | |
8318d78a | 995 | if (local->sta_sw_scanning) |
b2c258fb | 996 | chan = local->scan_channel; |
8318d78a | 997 | else |
b2c258fb | 998 | chan = local->oper_channel; |
f0706e82 | 999 | |
8318d78a JB |
1000 | local->hw.conf.channel = chan; |
1001 | ||
1002 | if (!local->hw.conf.power_level) | |
1003 | local->hw.conf.power_level = chan->max_power; | |
1004 | else | |
1005 | local->hw.conf.power_level = min(chan->max_power, | |
1006 | local->hw.conf.power_level); | |
1007 | ||
1008 | local->hw.conf.max_antenna_gain = chan->max_antenna_gain; | |
f0706e82 | 1009 | |
b2c258fb | 1010 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
8318d78a JB |
1011 | printk(KERN_DEBUG "%s: HW CONFIG: freq=%d\n", |
1012 | wiphy_name(local->hw.wiphy), chan->center_freq); | |
1013 | #endif | |
b2c258fb | 1014 | |
f7c4daed | 1015 | if (local->open_count) |
b2c258fb | 1016 | ret = local->ops->config(local_to_hw(local), &local->hw.conf); |
f0706e82 | 1017 | |
b2c258fb JB |
1018 | return ret; |
1019 | } | |
f0706e82 | 1020 | |
d3c990fb RR |
1021 | /** |
1022 | * ieee80211_hw_config_ht should be used only after legacy configuration | |
1023 | * has been determined, as ht configuration depends upon the hardware's | |
1024 | * HT abilities for a _specific_ band. | |
1025 | */ | |
1026 | int ieee80211_hw_config_ht(struct ieee80211_local *local, int enable_ht, | |
1027 | struct ieee80211_ht_info *req_ht_cap, | |
1028 | struct ieee80211_ht_bss_info *req_bss_cap) | |
1029 | { | |
1030 | struct ieee80211_conf *conf = &local->hw.conf; | |
8318d78a | 1031 | struct ieee80211_supported_band *sband; |
d3c990fb RR |
1032 | int i; |
1033 | ||
8318d78a JB |
1034 | sband = local->hw.wiphy->bands[conf->channel->band]; |
1035 | ||
d3c990fb | 1036 | /* HT is not supported */ |
8318d78a | 1037 | if (!sband->ht_info.ht_supported) { |
d3c990fb RR |
1038 | conf->flags &= ~IEEE80211_CONF_SUPPORT_HT_MODE; |
1039 | return -EOPNOTSUPP; | |
1040 | } | |
1041 | ||
1042 | /* disable HT */ | |
1043 | if (!enable_ht) { | |
1044 | conf->flags &= ~IEEE80211_CONF_SUPPORT_HT_MODE; | |
1045 | } else { | |
1046 | conf->flags |= IEEE80211_CONF_SUPPORT_HT_MODE; | |
8318d78a | 1047 | conf->ht_conf.cap = req_ht_cap->cap & sband->ht_info.cap; |
d3c990fb RR |
1048 | conf->ht_conf.cap &= ~(IEEE80211_HT_CAP_MIMO_PS); |
1049 | conf->ht_conf.cap |= | |
8318d78a | 1050 | sband->ht_info.cap & IEEE80211_HT_CAP_MIMO_PS; |
d3c990fb RR |
1051 | conf->ht_bss_conf.primary_channel = |
1052 | req_bss_cap->primary_channel; | |
1053 | conf->ht_bss_conf.bss_cap = req_bss_cap->bss_cap; | |
1054 | conf->ht_bss_conf.bss_op_mode = req_bss_cap->bss_op_mode; | |
1055 | for (i = 0; i < SUPP_MCS_SET_LEN; i++) | |
1056 | conf->ht_conf.supp_mcs_set[i] = | |
8318d78a | 1057 | sband->ht_info.supp_mcs_set[i] & |
d3c990fb RR |
1058 | req_ht_cap->supp_mcs_set[i]; |
1059 | ||
1060 | /* In STA mode, this gives us indication | |
1061 | * to the AP's mode of operation */ | |
1062 | conf->ht_conf.ht_supported = 1; | |
1063 | conf->ht_conf.ampdu_factor = req_ht_cap->ampdu_factor; | |
1064 | conf->ht_conf.ampdu_density = req_ht_cap->ampdu_density; | |
1065 | } | |
1066 | ||
1067 | local->ops->conf_ht(local_to_hw(local), &local->hw.conf); | |
1068 | ||
1069 | return 0; | |
1070 | } | |
1071 | ||
471b3efd JB |
1072 | void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, |
1073 | u32 changed) | |
d9430a32 | 1074 | { |
471b3efd JB |
1075 | struct ieee80211_local *local = sdata->local; |
1076 | ||
1077 | if (!changed) | |
1078 | return; | |
1079 | ||
1080 | if (local->ops->bss_info_changed) | |
1081 | local->ops->bss_info_changed(local_to_hw(local), | |
1082 | &sdata->vif, | |
1083 | &sdata->bss_conf, | |
1084 | changed); | |
d9430a32 DD |
1085 | } |
1086 | ||
1087 | void ieee80211_reset_erp_info(struct net_device *dev) | |
1088 | { | |
1089 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
1090 | ||
471b3efd JB |
1091 | sdata->bss_conf.use_cts_prot = 0; |
1092 | sdata->bss_conf.use_short_preamble = 0; | |
1093 | ieee80211_bss_info_change_notify(sdata, | |
1094 | BSS_CHANGED_ERP_CTS_PROT | | |
1095 | BSS_CHANGED_ERP_PREAMBLE); | |
d9430a32 DD |
1096 | } |
1097 | ||
f0706e82 JB |
1098 | void ieee80211_tx_status_irqsafe(struct ieee80211_hw *hw, |
1099 | struct sk_buff *skb, | |
1100 | struct ieee80211_tx_status *status) | |
1101 | { | |
1102 | struct ieee80211_local *local = hw_to_local(hw); | |
1103 | struct ieee80211_tx_status *saved; | |
1104 | int tmp; | |
1105 | ||
1106 | skb->dev = local->mdev; | |
1107 | saved = kmalloc(sizeof(struct ieee80211_tx_status), GFP_ATOMIC); | |
1108 | if (unlikely(!saved)) { | |
1109 | if (net_ratelimit()) | |
1110 | printk(KERN_WARNING "%s: Not enough memory, " | |
1111 | "dropping tx status", skb->dev->name); | |
1112 | /* should be dev_kfree_skb_irq, but due to this function being | |
1113 | * named _irqsafe instead of just _irq we can't be sure that | |
1114 | * people won't call it from non-irq contexts */ | |
1115 | dev_kfree_skb_any(skb); | |
1116 | return; | |
1117 | } | |
1118 | memcpy(saved, status, sizeof(struct ieee80211_tx_status)); | |
1119 | /* copy pointer to saved status into skb->cb for use by tasklet */ | |
1120 | memcpy(skb->cb, &saved, sizeof(saved)); | |
1121 | ||
1122 | skb->pkt_type = IEEE80211_TX_STATUS_MSG; | |
1123 | skb_queue_tail(status->control.flags & IEEE80211_TXCTL_REQ_TX_STATUS ? | |
1124 | &local->skb_queue : &local->skb_queue_unreliable, skb); | |
1125 | tmp = skb_queue_len(&local->skb_queue) + | |
1126 | skb_queue_len(&local->skb_queue_unreliable); | |
1127 | while (tmp > IEEE80211_IRQSAFE_QUEUE_LIMIT && | |
1128 | (skb = skb_dequeue(&local->skb_queue_unreliable))) { | |
1129 | memcpy(&saved, skb->cb, sizeof(saved)); | |
1130 | kfree(saved); | |
1131 | dev_kfree_skb_irq(skb); | |
1132 | tmp--; | |
1133 | I802_DEBUG_INC(local->tx_status_drop); | |
1134 | } | |
1135 | tasklet_schedule(&local->tasklet); | |
1136 | } | |
1137 | EXPORT_SYMBOL(ieee80211_tx_status_irqsafe); | |
1138 | ||
1139 | static void ieee80211_tasklet_handler(unsigned long data) | |
1140 | { | |
1141 | struct ieee80211_local *local = (struct ieee80211_local *) data; | |
1142 | struct sk_buff *skb; | |
1143 | struct ieee80211_rx_status rx_status; | |
1144 | struct ieee80211_tx_status *tx_status; | |
eadc8d9e | 1145 | struct ieee80211_ra_tid *ra_tid; |
f0706e82 JB |
1146 | |
1147 | while ((skb = skb_dequeue(&local->skb_queue)) || | |
1148 | (skb = skb_dequeue(&local->skb_queue_unreliable))) { | |
1149 | switch (skb->pkt_type) { | |
1150 | case IEEE80211_RX_MSG: | |
1151 | /* status is in skb->cb */ | |
1152 | memcpy(&rx_status, skb->cb, sizeof(rx_status)); | |
51fb61e7 | 1153 | /* Clear skb->pkt_type in order to not confuse kernel |
f0706e82 JB |
1154 | * netstack. */ |
1155 | skb->pkt_type = 0; | |
1156 | __ieee80211_rx(local_to_hw(local), skb, &rx_status); | |
1157 | break; | |
1158 | case IEEE80211_TX_STATUS_MSG: | |
1159 | /* get pointer to saved status out of skb->cb */ | |
1160 | memcpy(&tx_status, skb->cb, sizeof(tx_status)); | |
1161 | skb->pkt_type = 0; | |
1162 | ieee80211_tx_status(local_to_hw(local), | |
1163 | skb, tx_status); | |
1164 | kfree(tx_status); | |
1165 | break; | |
eadc8d9e RR |
1166 | case IEEE80211_DELBA_MSG: |
1167 | ra_tid = (struct ieee80211_ra_tid *) &skb->cb; | |
1168 | ieee80211_stop_tx_ba_cb(local_to_hw(local), | |
1169 | ra_tid->ra, ra_tid->tid); | |
1170 | dev_kfree_skb(skb); | |
1171 | break; | |
1172 | case IEEE80211_ADDBA_MSG: | |
1173 | ra_tid = (struct ieee80211_ra_tid *) &skb->cb; | |
1174 | ieee80211_start_tx_ba_cb(local_to_hw(local), | |
1175 | ra_tid->ra, ra_tid->tid); | |
1176 | dev_kfree_skb(skb); | |
1177 | break ; | |
f0706e82 JB |
1178 | default: /* should never get here! */ |
1179 | printk(KERN_ERR "%s: Unknown message type (%d)\n", | |
dd1cd4c6 | 1180 | wiphy_name(local->hw.wiphy), skb->pkt_type); |
f0706e82 JB |
1181 | dev_kfree_skb(skb); |
1182 | break; | |
1183 | } | |
1184 | } | |
1185 | } | |
1186 | ||
f0706e82 JB |
1187 | /* Remove added headers (e.g., QoS control), encryption header/MIC, etc. to |
1188 | * make a prepared TX frame (one that has been given to hw) to look like brand | |
1189 | * new IEEE 802.11 frame that is ready to go through TX processing again. | |
1190 | * Also, tx_packet_data in cb is restored from tx_control. */ | |
1191 | static void ieee80211_remove_tx_extra(struct ieee80211_local *local, | |
1192 | struct ieee80211_key *key, | |
1193 | struct sk_buff *skb, | |
1194 | struct ieee80211_tx_control *control) | |
1195 | { | |
1196 | int hdrlen, iv_len, mic_len; | |
1197 | struct ieee80211_tx_packet_data *pkt_data; | |
1198 | ||
1199 | pkt_data = (struct ieee80211_tx_packet_data *)skb->cb; | |
32bfd35d | 1200 | pkt_data->ifindex = vif_to_sdata(control->vif)->dev->ifindex; |
e8bf9649 JS |
1201 | pkt_data->flags = 0; |
1202 | if (control->flags & IEEE80211_TXCTL_REQ_TX_STATUS) | |
1203 | pkt_data->flags |= IEEE80211_TXPD_REQ_TX_STATUS; | |
1204 | if (control->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT) | |
1205 | pkt_data->flags |= IEEE80211_TXPD_DO_NOT_ENCRYPT; | |
1206 | if (control->flags & IEEE80211_TXCTL_REQUEUE) | |
1207 | pkt_data->flags |= IEEE80211_TXPD_REQUEUE; | |
678f5f71 JB |
1208 | if (control->flags & IEEE80211_TXCTL_EAPOL_FRAME) |
1209 | pkt_data->flags |= IEEE80211_TXPD_EAPOL_FRAME; | |
f0706e82 JB |
1210 | pkt_data->queue = control->queue; |
1211 | ||
1212 | hdrlen = ieee80211_get_hdrlen_from_skb(skb); | |
1213 | ||
1214 | if (!key) | |
1215 | goto no_key; | |
1216 | ||
8f20fc24 | 1217 | switch (key->conf.alg) { |
f0706e82 JB |
1218 | case ALG_WEP: |
1219 | iv_len = WEP_IV_LEN; | |
1220 | mic_len = WEP_ICV_LEN; | |
1221 | break; | |
1222 | case ALG_TKIP: | |
1223 | iv_len = TKIP_IV_LEN; | |
1224 | mic_len = TKIP_ICV_LEN; | |
1225 | break; | |
1226 | case ALG_CCMP: | |
1227 | iv_len = CCMP_HDR_LEN; | |
1228 | mic_len = CCMP_MIC_LEN; | |
1229 | break; | |
1230 | default: | |
1231 | goto no_key; | |
1232 | } | |
1233 | ||
8f20fc24 | 1234 | if (skb->len >= mic_len && |
11a843b7 | 1235 | !(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)) |
f0706e82 JB |
1236 | skb_trim(skb, skb->len - mic_len); |
1237 | if (skb->len >= iv_len && skb->len > hdrlen) { | |
1238 | memmove(skb->data + iv_len, skb->data, hdrlen); | |
1239 | skb_pull(skb, iv_len); | |
1240 | } | |
1241 | ||
1242 | no_key: | |
1243 | { | |
1244 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; | |
1245 | u16 fc = le16_to_cpu(hdr->frame_control); | |
1246 | if ((fc & 0x8C) == 0x88) /* QoS Control Field */ { | |
1247 | fc &= ~IEEE80211_STYPE_QOS_DATA; | |
1248 | hdr->frame_control = cpu_to_le16(fc); | |
1249 | memmove(skb->data + 2, skb->data, hdrlen - 2); | |
1250 | skb_pull(skb, 2); | |
1251 | } | |
1252 | } | |
1253 | } | |
1254 | ||
d46e144b JB |
1255 | static void ieee80211_handle_filtered_frame(struct ieee80211_local *local, |
1256 | struct sta_info *sta, | |
1257 | struct sk_buff *skb, | |
1258 | struct ieee80211_tx_status *status) | |
1259 | { | |
1260 | sta->tx_filtered_count++; | |
1261 | ||
1262 | /* | |
1263 | * Clear the TX filter mask for this STA when sending the next | |
1264 | * packet. If the STA went to power save mode, this will happen | |
1265 | * happen when it wakes up for the next time. | |
1266 | */ | |
1267 | sta->flags |= WLAN_STA_CLEAR_PS_FILT; | |
1268 | ||
1269 | /* | |
1270 | * This code races in the following way: | |
1271 | * | |
1272 | * (1) STA sends frame indicating it will go to sleep and does so | |
1273 | * (2) hardware/firmware adds STA to filter list, passes frame up | |
1274 | * (3) hardware/firmware processes TX fifo and suppresses a frame | |
1275 | * (4) we get TX status before having processed the frame and | |
1276 | * knowing that the STA has gone to sleep. | |
1277 | * | |
1278 | * This is actually quite unlikely even when both those events are | |
1279 | * processed from interrupts coming in quickly after one another or | |
1280 | * even at the same time because we queue both TX status events and | |
1281 | * RX frames to be processed by a tasklet and process them in the | |
1282 | * same order that they were received or TX status last. Hence, there | |
1283 | * is no race as long as the frame RX is processed before the next TX | |
1284 | * status, which drivers can ensure, see below. | |
1285 | * | |
1286 | * Note that this can only happen if the hardware or firmware can | |
1287 | * actually add STAs to the filter list, if this is done by the | |
1288 | * driver in response to set_tim() (which will only reduce the race | |
1289 | * this whole filtering tries to solve, not completely solve it) | |
1290 | * this situation cannot happen. | |
1291 | * | |
1292 | * To completely solve this race drivers need to make sure that they | |
1293 | * (a) don't mix the irq-safe/not irq-safe TX status/RX processing | |
1294 | * functions and | |
1295 | * (b) always process RX events before TX status events if ordering | |
1296 | * can be unknown, for example with different interrupt status | |
1297 | * bits. | |
1298 | */ | |
1299 | if (sta->flags & WLAN_STA_PS && | |
1300 | skb_queue_len(&sta->tx_filtered) < STA_MAX_TX_BUFFER) { | |
1301 | ieee80211_remove_tx_extra(local, sta->key, skb, | |
1302 | &status->control); | |
1303 | skb_queue_tail(&sta->tx_filtered, skb); | |
1304 | return; | |
1305 | } | |
1306 | ||
1307 | if (!(sta->flags & WLAN_STA_PS) && | |
1308 | !(status->control.flags & IEEE80211_TXCTL_REQUEUE)) { | |
1309 | /* Software retry the packet once */ | |
1310 | status->control.flags |= IEEE80211_TXCTL_REQUEUE; | |
1311 | ieee80211_remove_tx_extra(local, sta->key, skb, | |
1312 | &status->control); | |
1313 | dev_queue_xmit(skb); | |
1314 | return; | |
1315 | } | |
1316 | ||
1317 | if (net_ratelimit()) | |
1318 | printk(KERN_DEBUG "%s: dropped TX filtered frame, " | |
1319 | "queue_len=%d PS=%d @%lu\n", | |
1320 | wiphy_name(local->hw.wiphy), | |
1321 | skb_queue_len(&sta->tx_filtered), | |
1322 | !!(sta->flags & WLAN_STA_PS), jiffies); | |
1323 | dev_kfree_skb(skb); | |
1324 | } | |
1325 | ||
f0706e82 JB |
1326 | void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb, |
1327 | struct ieee80211_tx_status *status) | |
1328 | { | |
1329 | struct sk_buff *skb2; | |
1330 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; | |
1331 | struct ieee80211_local *local = hw_to_local(hw); | |
1332 | u16 frag, type; | |
b306f453 JB |
1333 | struct ieee80211_tx_status_rtap_hdr *rthdr; |
1334 | struct ieee80211_sub_if_data *sdata; | |
3d30d949 | 1335 | struct net_device *prev_dev = NULL; |
f0706e82 JB |
1336 | |
1337 | if (!status) { | |
1338 | printk(KERN_ERR | |
1339 | "%s: ieee80211_tx_status called with NULL status\n", | |
dd1cd4c6 | 1340 | wiphy_name(local->hw.wiphy)); |
f0706e82 JB |
1341 | dev_kfree_skb(skb); |
1342 | return; | |
1343 | } | |
1344 | ||
d0709a65 JB |
1345 | rcu_read_lock(); |
1346 | ||
f0706e82 JB |
1347 | if (status->excessive_retries) { |
1348 | struct sta_info *sta; | |
1349 | sta = sta_info_get(local, hdr->addr1); | |
1350 | if (sta) { | |
1351 | if (sta->flags & WLAN_STA_PS) { | |
d46e144b JB |
1352 | /* |
1353 | * The STA is in power save mode, so assume | |
f0706e82 JB |
1354 | * that this TX packet failed because of that. |
1355 | */ | |
1356 | status->excessive_retries = 0; | |
1357 | status->flags |= IEEE80211_TX_STATUS_TX_FILTERED; | |
d46e144b JB |
1358 | ieee80211_handle_filtered_frame(local, sta, |
1359 | skb, status); | |
d0709a65 | 1360 | rcu_read_unlock(); |
d46e144b | 1361 | return; |
f0706e82 | 1362 | } |
f0706e82 JB |
1363 | } |
1364 | } | |
1365 | ||
1366 | if (status->flags & IEEE80211_TX_STATUS_TX_FILTERED) { | |
1367 | struct sta_info *sta; | |
1368 | sta = sta_info_get(local, hdr->addr1); | |
1369 | if (sta) { | |
d46e144b JB |
1370 | ieee80211_handle_filtered_frame(local, sta, skb, |
1371 | status); | |
d0709a65 | 1372 | rcu_read_unlock(); |
f0706e82 JB |
1373 | return; |
1374 | } | |
1abbe498 MN |
1375 | } else |
1376 | rate_control_tx_status(local->mdev, skb, status); | |
f0706e82 | 1377 | |
d0709a65 JB |
1378 | rcu_read_unlock(); |
1379 | ||
f0706e82 JB |
1380 | ieee80211_led_tx(local, 0); |
1381 | ||
1382 | /* SNMP counters | |
1383 | * Fragments are passed to low-level drivers as separate skbs, so these | |
1384 | * are actually fragments, not frames. Update frame counters only for | |
1385 | * the first fragment of the frame. */ | |
1386 | ||
1387 | frag = le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_FRAG; | |
1388 | type = le16_to_cpu(hdr->frame_control) & IEEE80211_FCTL_FTYPE; | |
1389 | ||
1390 | if (status->flags & IEEE80211_TX_STATUS_ACK) { | |
1391 | if (frag == 0) { | |
1392 | local->dot11TransmittedFrameCount++; | |
1393 | if (is_multicast_ether_addr(hdr->addr1)) | |
1394 | local->dot11MulticastTransmittedFrameCount++; | |
1395 | if (status->retry_count > 0) | |
1396 | local->dot11RetryCount++; | |
1397 | if (status->retry_count > 1) | |
1398 | local->dot11MultipleRetryCount++; | |
1399 | } | |
1400 | ||
1401 | /* This counter shall be incremented for an acknowledged MPDU | |
1402 | * with an individual address in the address 1 field or an MPDU | |
1403 | * with a multicast address in the address 1 field of type Data | |
1404 | * or Management. */ | |
1405 | if (!is_multicast_ether_addr(hdr->addr1) || | |
1406 | type == IEEE80211_FTYPE_DATA || | |
1407 | type == IEEE80211_FTYPE_MGMT) | |
1408 | local->dot11TransmittedFragmentCount++; | |
1409 | } else { | |
1410 | if (frag == 0) | |
1411 | local->dot11FailedCount++; | |
1412 | } | |
1413 | ||
b306f453 JB |
1414 | /* this was a transmitted frame, but now we want to reuse it */ |
1415 | skb_orphan(skb); | |
1416 | ||
3d30d949 MW |
1417 | /* |
1418 | * This is a bit racy but we can avoid a lot of work | |
1419 | * with this test... | |
1420 | */ | |
1421 | if (!local->monitors && !local->cooked_mntrs) { | |
f0706e82 JB |
1422 | dev_kfree_skb(skb); |
1423 | return; | |
1424 | } | |
1425 | ||
b306f453 | 1426 | /* send frame to monitor interfaces now */ |
f0706e82 | 1427 | |
b306f453 JB |
1428 | if (skb_headroom(skb) < sizeof(*rthdr)) { |
1429 | printk(KERN_ERR "ieee80211_tx_status: headroom too small\n"); | |
f0706e82 JB |
1430 | dev_kfree_skb(skb); |
1431 | return; | |
1432 | } | |
f0706e82 | 1433 | |
b306f453 JB |
1434 | rthdr = (struct ieee80211_tx_status_rtap_hdr*) |
1435 | skb_push(skb, sizeof(*rthdr)); | |
1436 | ||
1437 | memset(rthdr, 0, sizeof(*rthdr)); | |
1438 | rthdr->hdr.it_len = cpu_to_le16(sizeof(*rthdr)); | |
1439 | rthdr->hdr.it_present = | |
1440 | cpu_to_le32((1 << IEEE80211_RADIOTAP_TX_FLAGS) | | |
1441 | (1 << IEEE80211_RADIOTAP_DATA_RETRIES)); | |
1442 | ||
1443 | if (!(status->flags & IEEE80211_TX_STATUS_ACK) && | |
1444 | !is_multicast_ether_addr(hdr->addr1)) | |
1445 | rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_FAIL); | |
1446 | ||
1447 | if ((status->control.flags & IEEE80211_TXCTL_USE_RTS_CTS) && | |
1448 | (status->control.flags & IEEE80211_TXCTL_USE_CTS_PROTECT)) | |
1449 | rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_CTS); | |
1450 | else if (status->control.flags & IEEE80211_TXCTL_USE_RTS_CTS) | |
1451 | rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_RTS); | |
1452 | ||
1453 | rthdr->data_retries = status->retry_count; | |
1454 | ||
3d30d949 MW |
1455 | /* XXX: is this sufficient for BPF? */ |
1456 | skb_set_mac_header(skb, 0); | |
1457 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
1458 | skb->pkt_type = PACKET_OTHERHOST; | |
1459 | skb->protocol = htons(ETH_P_802_2); | |
1460 | memset(skb->cb, 0, sizeof(skb->cb)); | |
1461 | ||
79010420 | 1462 | rcu_read_lock(); |
79010420 | 1463 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
51fb61e7 | 1464 | if (sdata->vif.type == IEEE80211_IF_TYPE_MNTR) { |
b306f453 JB |
1465 | if (!netif_running(sdata->dev)) |
1466 | continue; | |
3d30d949 MW |
1467 | |
1468 | if (prev_dev) { | |
79010420 | 1469 | skb2 = skb_clone(skb, GFP_ATOMIC); |
3d30d949 MW |
1470 | if (skb2) { |
1471 | skb2->dev = prev_dev; | |
1472 | netif_rx(skb2); | |
1473 | } | |
1474 | } | |
1475 | ||
1476 | prev_dev = sdata->dev; | |
b306f453 JB |
1477 | } |
1478 | } | |
3d30d949 MW |
1479 | if (prev_dev) { |
1480 | skb->dev = prev_dev; | |
1481 | netif_rx(skb); | |
1482 | skb = NULL; | |
1483 | } | |
79010420 | 1484 | rcu_read_unlock(); |
3d30d949 | 1485 | dev_kfree_skb(skb); |
f0706e82 JB |
1486 | } |
1487 | EXPORT_SYMBOL(ieee80211_tx_status); | |
1488 | ||
f0706e82 JB |
1489 | struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len, |
1490 | const struct ieee80211_ops *ops) | |
1491 | { | |
f0706e82 | 1492 | struct ieee80211_local *local; |
f0706e82 JB |
1493 | int priv_size; |
1494 | struct wiphy *wiphy; | |
1495 | ||
1496 | /* Ensure 32-byte alignment of our private data and hw private data. | |
1497 | * We use the wiphy priv data for both our ieee80211_local and for | |
1498 | * the driver's private data | |
1499 | * | |
1500 | * In memory it'll be like this: | |
1501 | * | |
1502 | * +-------------------------+ | |
1503 | * | struct wiphy | | |
1504 | * +-------------------------+ | |
1505 | * | struct ieee80211_local | | |
1506 | * +-------------------------+ | |
1507 | * | driver's private data | | |
1508 | * +-------------------------+ | |
1509 | * | |
1510 | */ | |
1511 | priv_size = ((sizeof(struct ieee80211_local) + | |
1512 | NETDEV_ALIGN_CONST) & ~NETDEV_ALIGN_CONST) + | |
1513 | priv_data_len; | |
1514 | ||
1515 | wiphy = wiphy_new(&mac80211_config_ops, priv_size); | |
1516 | ||
1517 | if (!wiphy) | |
1518 | return NULL; | |
1519 | ||
1520 | wiphy->privid = mac80211_wiphy_privid; | |
1521 | ||
1522 | local = wiphy_priv(wiphy); | |
1523 | local->hw.wiphy = wiphy; | |
1524 | ||
1525 | local->hw.priv = (char *)local + | |
1526 | ((sizeof(struct ieee80211_local) + | |
1527 | NETDEV_ALIGN_CONST) & ~NETDEV_ALIGN_CONST); | |
1528 | ||
4480f15c | 1529 | BUG_ON(!ops->tx); |
4150c572 JB |
1530 | BUG_ON(!ops->start); |
1531 | BUG_ON(!ops->stop); | |
4480f15c JB |
1532 | BUG_ON(!ops->config); |
1533 | BUG_ON(!ops->add_interface); | |
4150c572 JB |
1534 | BUG_ON(!ops->remove_interface); |
1535 | BUG_ON(!ops->configure_filter); | |
f0706e82 JB |
1536 | local->ops = ops; |
1537 | ||
f0706e82 JB |
1538 | local->hw.queues = 1; /* default */ |
1539 | ||
f0706e82 JB |
1540 | local->bridge_packets = 1; |
1541 | ||
1542 | local->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD; | |
1543 | local->fragmentation_threshold = IEEE80211_MAX_FRAG_THRESHOLD; | |
1544 | local->short_retry_limit = 7; | |
1545 | local->long_retry_limit = 4; | |
1546 | local->hw.conf.radio_enabled = 1; | |
f0706e82 | 1547 | |
79010420 | 1548 | INIT_LIST_HEAD(&local->interfaces); |
f0706e82 JB |
1549 | |
1550 | INIT_DELAYED_WORK(&local->scan_work, ieee80211_sta_scan_work); | |
f0706e82 JB |
1551 | |
1552 | sta_info_init(local); | |
1553 | ||
f0706e82 JB |
1554 | tasklet_init(&local->tx_pending_tasklet, ieee80211_tx_pending, |
1555 | (unsigned long)local); | |
1556 | tasklet_disable(&local->tx_pending_tasklet); | |
1557 | ||
1558 | tasklet_init(&local->tasklet, | |
1559 | ieee80211_tasklet_handler, | |
1560 | (unsigned long) local); | |
1561 | tasklet_disable(&local->tasklet); | |
1562 | ||
1563 | skb_queue_head_init(&local->skb_queue); | |
1564 | skb_queue_head_init(&local->skb_queue_unreliable); | |
1565 | ||
1566 | return local_to_hw(local); | |
1567 | } | |
1568 | EXPORT_SYMBOL(ieee80211_alloc_hw); | |
1569 | ||
1570 | int ieee80211_register_hw(struct ieee80211_hw *hw) | |
1571 | { | |
1572 | struct ieee80211_local *local = hw_to_local(hw); | |
1573 | const char *name; | |
1574 | int result; | |
8318d78a | 1575 | enum ieee80211_band band; |
96d51056 JB |
1576 | struct net_device *mdev; |
1577 | struct ieee80211_sub_if_data *sdata; | |
8318d78a JB |
1578 | |
1579 | /* | |
1580 | * generic code guarantees at least one band, | |
1581 | * set this very early because much code assumes | |
1582 | * that hw.conf.channel is assigned | |
1583 | */ | |
1584 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { | |
1585 | struct ieee80211_supported_band *sband; | |
1586 | ||
1587 | sband = local->hw.wiphy->bands[band]; | |
1588 | if (sband) { | |
1589 | /* init channel we're on */ | |
1590 | local->hw.conf.channel = | |
1591 | local->oper_channel = | |
1592 | local->scan_channel = &sband->channels[0]; | |
1593 | break; | |
1594 | } | |
1595 | } | |
f0706e82 JB |
1596 | |
1597 | result = wiphy_register(local->hw.wiphy); | |
1598 | if (result < 0) | |
1599 | return result; | |
1600 | ||
96d51056 JB |
1601 | /* for now, mdev needs sub_if_data :/ */ |
1602 | mdev = alloc_netdev(sizeof(struct ieee80211_sub_if_data), | |
1603 | "wmaster%d", ether_setup); | |
1604 | if (!mdev) | |
1605 | goto fail_mdev_alloc; | |
1606 | ||
1607 | sdata = IEEE80211_DEV_TO_SUB_IF(mdev); | |
1608 | mdev->ieee80211_ptr = &sdata->wdev; | |
1609 | sdata->wdev.wiphy = local->hw.wiphy; | |
1610 | ||
1611 | local->mdev = mdev; | |
1612 | ||
1613 | ieee80211_rx_bss_list_init(mdev); | |
1614 | ||
1615 | mdev->hard_start_xmit = ieee80211_master_start_xmit; | |
1616 | mdev->open = ieee80211_master_open; | |
1617 | mdev->stop = ieee80211_master_stop; | |
1618 | mdev->type = ARPHRD_IEEE80211; | |
1619 | mdev->header_ops = &ieee80211_header_ops; | |
1620 | mdev->set_multicast_list = ieee80211_master_set_multicast_list; | |
1621 | ||
1622 | sdata->vif.type = IEEE80211_IF_TYPE_AP; | |
1623 | sdata->dev = mdev; | |
1624 | sdata->local = local; | |
1625 | sdata->u.ap.force_unicast_rateidx = -1; | |
1626 | sdata->u.ap.max_ratectrl_rateidx = -1; | |
1627 | ieee80211_if_sdata_init(sdata); | |
1628 | ||
1629 | /* no RCU needed since we're still during init phase */ | |
1630 | list_add_tail(&sdata->list, &local->interfaces); | |
1631 | ||
f0706e82 JB |
1632 | name = wiphy_dev(local->hw.wiphy)->driver->name; |
1633 | local->hw.workqueue = create_singlethread_workqueue(name); | |
1634 | if (!local->hw.workqueue) { | |
1635 | result = -ENOMEM; | |
1636 | goto fail_workqueue; | |
1637 | } | |
1638 | ||
b306f453 JB |
1639 | /* |
1640 | * The hardware needs headroom for sending the frame, | |
1641 | * and we need some headroom for passing the frame to monitor | |
1642 | * interfaces, but never both at the same time. | |
1643 | */ | |
33ccad35 JB |
1644 | local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom, |
1645 | sizeof(struct ieee80211_tx_status_rtap_hdr)); | |
b306f453 | 1646 | |
e9f207f0 JB |
1647 | debugfs_hw_add(local); |
1648 | ||
f0706e82 JB |
1649 | local->hw.conf.beacon_int = 1000; |
1650 | ||
1651 | local->wstats_flags |= local->hw.max_rssi ? | |
1652 | IW_QUAL_LEVEL_UPDATED : IW_QUAL_LEVEL_INVALID; | |
1653 | local->wstats_flags |= local->hw.max_signal ? | |
1654 | IW_QUAL_QUAL_UPDATED : IW_QUAL_QUAL_INVALID; | |
1655 | local->wstats_flags |= local->hw.max_noise ? | |
1656 | IW_QUAL_NOISE_UPDATED : IW_QUAL_NOISE_INVALID; | |
1657 | if (local->hw.max_rssi < 0 || local->hw.max_noise < 0) | |
1658 | local->wstats_flags |= IW_QUAL_DBM; | |
1659 | ||
1660 | result = sta_info_start(local); | |
1661 | if (result < 0) | |
1662 | goto fail_sta_info; | |
1663 | ||
1664 | rtnl_lock(); | |
1665 | result = dev_alloc_name(local->mdev, local->mdev->name); | |
1666 | if (result < 0) | |
1667 | goto fail_dev; | |
1668 | ||
1669 | memcpy(local->mdev->dev_addr, local->hw.wiphy->perm_addr, ETH_ALEN); | |
1670 | SET_NETDEV_DEV(local->mdev, wiphy_dev(local->hw.wiphy)); | |
1671 | ||
1672 | result = register_netdevice(local->mdev); | |
1673 | if (result < 0) | |
1674 | goto fail_dev; | |
1675 | ||
e9f207f0 | 1676 | ieee80211_debugfs_add_netdev(IEEE80211_DEV_TO_SUB_IF(local->mdev)); |
5b2812e9 | 1677 | ieee80211_if_set_type(local->mdev, IEEE80211_IF_TYPE_AP); |
e9f207f0 | 1678 | |
830f9038 JB |
1679 | result = ieee80211_init_rate_ctrl_alg(local, |
1680 | hw->rate_control_algorithm); | |
f0706e82 JB |
1681 | if (result < 0) { |
1682 | printk(KERN_DEBUG "%s: Failed to initialize rate control " | |
dd1cd4c6 | 1683 | "algorithm\n", wiphy_name(local->hw.wiphy)); |
f0706e82 JB |
1684 | goto fail_rate; |
1685 | } | |
1686 | ||
1687 | result = ieee80211_wep_init(local); | |
1688 | ||
1689 | if (result < 0) { | |
1690 | printk(KERN_DEBUG "%s: Failed to initialize wep\n", | |
dd1cd4c6 | 1691 | wiphy_name(local->hw.wiphy)); |
f0706e82 JB |
1692 | goto fail_wep; |
1693 | } | |
1694 | ||
1695 | ieee80211_install_qdisc(local->mdev); | |
1696 | ||
1697 | /* add one default STA interface */ | |
1698 | result = ieee80211_if_add(local->mdev, "wlan%d", NULL, | |
ee385855 | 1699 | IEEE80211_IF_TYPE_STA, NULL); |
f0706e82 JB |
1700 | if (result) |
1701 | printk(KERN_WARNING "%s: Failed to add default virtual iface\n", | |
dd1cd4c6 | 1702 | wiphy_name(local->hw.wiphy)); |
f0706e82 JB |
1703 | |
1704 | local->reg_state = IEEE80211_DEV_REGISTERED; | |
1705 | rtnl_unlock(); | |
1706 | ||
1707 | ieee80211_led_init(local); | |
1708 | ||
1709 | return 0; | |
1710 | ||
1711 | fail_wep: | |
1712 | rate_control_deinitialize(local); | |
1713 | fail_rate: | |
e9f207f0 | 1714 | ieee80211_debugfs_remove_netdev(IEEE80211_DEV_TO_SUB_IF(local->mdev)); |
f0706e82 JB |
1715 | unregister_netdevice(local->mdev); |
1716 | fail_dev: | |
1717 | rtnl_unlock(); | |
1718 | sta_info_stop(local); | |
1719 | fail_sta_info: | |
e9f207f0 | 1720 | debugfs_hw_del(local); |
f0706e82 JB |
1721 | destroy_workqueue(local->hw.workqueue); |
1722 | fail_workqueue: | |
96d51056 JB |
1723 | ieee80211_if_free(local->mdev); |
1724 | local->mdev = NULL; | |
1725 | fail_mdev_alloc: | |
f0706e82 JB |
1726 | wiphy_unregister(local->hw.wiphy); |
1727 | return result; | |
1728 | } | |
1729 | EXPORT_SYMBOL(ieee80211_register_hw); | |
1730 | ||
f0706e82 JB |
1731 | void ieee80211_unregister_hw(struct ieee80211_hw *hw) |
1732 | { | |
1733 | struct ieee80211_local *local = hw_to_local(hw); | |
1734 | struct ieee80211_sub_if_data *sdata, *tmp; | |
f0706e82 JB |
1735 | |
1736 | tasklet_kill(&local->tx_pending_tasklet); | |
1737 | tasklet_kill(&local->tasklet); | |
1738 | ||
1739 | rtnl_lock(); | |
1740 | ||
1741 | BUG_ON(local->reg_state != IEEE80211_DEV_REGISTERED); | |
1742 | ||
1743 | local->reg_state = IEEE80211_DEV_UNREGISTERED; | |
f0706e82 | 1744 | |
79010420 JB |
1745 | /* |
1746 | * At this point, interface list manipulations are fine | |
1747 | * because the driver cannot be handing us frames any | |
1748 | * more and the tasklet is killed. | |
1749 | */ | |
5b2812e9 JB |
1750 | |
1751 | /* | |
1752 | * First, we remove all non-master interfaces. Do this because they | |
1753 | * may have bss pointer dependency on the master, and when we free | |
1754 | * the master these would be freed as well, breaking our list | |
1755 | * iteration completely. | |
1756 | */ | |
1757 | list_for_each_entry_safe(sdata, tmp, &local->interfaces, list) { | |
1758 | if (sdata->dev == local->mdev) | |
1759 | continue; | |
1760 | list_del(&sdata->list); | |
f0706e82 | 1761 | __ieee80211_if_del(local, sdata); |
5b2812e9 JB |
1762 | } |
1763 | ||
1764 | /* then, finally, remove the master interface */ | |
1765 | __ieee80211_if_del(local, IEEE80211_DEV_TO_SUB_IF(local->mdev)); | |
f0706e82 JB |
1766 | |
1767 | rtnl_unlock(); | |
1768 | ||
f0706e82 JB |
1769 | ieee80211_rx_bss_list_deinit(local->mdev); |
1770 | ieee80211_clear_tx_pending(local); | |
1771 | sta_info_stop(local); | |
1772 | rate_control_deinitialize(local); | |
e9f207f0 | 1773 | debugfs_hw_del(local); |
f0706e82 | 1774 | |
f0706e82 JB |
1775 | if (skb_queue_len(&local->skb_queue) |
1776 | || skb_queue_len(&local->skb_queue_unreliable)) | |
1777 | printk(KERN_WARNING "%s: skb_queue not empty\n", | |
dd1cd4c6 | 1778 | wiphy_name(local->hw.wiphy)); |
f0706e82 JB |
1779 | skb_queue_purge(&local->skb_queue); |
1780 | skb_queue_purge(&local->skb_queue_unreliable); | |
1781 | ||
1782 | destroy_workqueue(local->hw.workqueue); | |
1783 | wiphy_unregister(local->hw.wiphy); | |
1784 | ieee80211_wep_free(local); | |
1785 | ieee80211_led_exit(local); | |
96d51056 JB |
1786 | ieee80211_if_free(local->mdev); |
1787 | local->mdev = NULL; | |
f0706e82 JB |
1788 | } |
1789 | EXPORT_SYMBOL(ieee80211_unregister_hw); | |
1790 | ||
1791 | void ieee80211_free_hw(struct ieee80211_hw *hw) | |
1792 | { | |
1793 | struct ieee80211_local *local = hw_to_local(hw); | |
1794 | ||
f0706e82 JB |
1795 | wiphy_free(local->hw.wiphy); |
1796 | } | |
1797 | EXPORT_SYMBOL(ieee80211_free_hw); | |
1798 | ||
f0706e82 JB |
1799 | static int __init ieee80211_init(void) |
1800 | { | |
1801 | struct sk_buff *skb; | |
1802 | int ret; | |
1803 | ||
1804 | BUILD_BUG_ON(sizeof(struct ieee80211_tx_packet_data) > sizeof(skb->cb)); | |
1805 | ||
4b475898 | 1806 | ret = rc80211_simple_init(); |
ac71c691 | 1807 | if (ret) |
3eadf5f4 | 1808 | goto out; |
ad018375 | 1809 | |
4b475898 | 1810 | ret = rc80211_pid_init(); |
ad018375 | 1811 | if (ret) |
3eadf5f4 | 1812 | goto out_cleanup_simple; |
ac71c691 | 1813 | |
f0706e82 JB |
1814 | ret = ieee80211_wme_register(); |
1815 | if (ret) { | |
1816 | printk(KERN_DEBUG "ieee80211_init: failed to " | |
1817 | "initialize WME (err=%d)\n", ret); | |
3eadf5f4 | 1818 | goto out_cleanup_pid; |
f0706e82 JB |
1819 | } |
1820 | ||
e9f207f0 JB |
1821 | ieee80211_debugfs_netdev_init(); |
1822 | ||
f0706e82 | 1823 | return 0; |
ad018375 | 1824 | |
3eadf5f4 | 1825 | out_cleanup_pid: |
4b475898 | 1826 | rc80211_pid_exit(); |
3eadf5f4 JB |
1827 | out_cleanup_simple: |
1828 | rc80211_simple_exit(); | |
1829 | out: | |
ad018375 | 1830 | return ret; |
f0706e82 JB |
1831 | } |
1832 | ||
f0706e82 JB |
1833 | static void __exit ieee80211_exit(void) |
1834 | { | |
4b475898 JB |
1835 | rc80211_simple_exit(); |
1836 | rc80211_pid_exit(); | |
ac71c691 | 1837 | |
f7a92144 LCC |
1838 | if (mesh_allocated) |
1839 | ieee80211s_stop(); | |
902acc78 | 1840 | |
f0706e82 | 1841 | ieee80211_wme_unregister(); |
e9f207f0 | 1842 | ieee80211_debugfs_netdev_exit(); |
f0706e82 JB |
1843 | } |
1844 | ||
1845 | ||
ca9938fe | 1846 | subsys_initcall(ieee80211_init); |
f0706e82 JB |
1847 | module_exit(ieee80211_exit); |
1848 | ||
1849 | MODULE_DESCRIPTION("IEEE 802.11 subsystem"); | |
1850 | MODULE_LICENSE("GPL"); |