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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> | |
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" | |
29 | #include "wep.h" | |
f0706e82 JB |
30 | #include "wme.h" |
31 | #include "aes_ccm.h" | |
32 | #include "ieee80211_led.h" | |
e0eb6859 | 33 | #include "cfg.h" |
e9f207f0 JB |
34 | #include "debugfs.h" |
35 | #include "debugfs_netdev.h" | |
f0706e82 | 36 | |
d3c990fb RR |
37 | #define SUPP_MCS_SET_LEN 16 |
38 | ||
b306f453 JB |
39 | /* |
40 | * For seeing transmitted packets on monitor interfaces | |
41 | * we have a radiotap header too. | |
42 | */ | |
43 | struct ieee80211_tx_status_rtap_hdr { | |
44 | struct ieee80211_radiotap_header hdr; | |
45 | __le16 tx_flags; | |
46 | u8 data_retries; | |
47 | } __attribute__ ((packed)); | |
48 | ||
b2c258fb | 49 | /* common interface routines */ |
b306f453 | 50 | |
b95cce35 | 51 | static int header_parse_80211(const struct sk_buff *skb, unsigned char *haddr) |
b2c258fb JB |
52 | { |
53 | memcpy(haddr, skb_mac_header(skb) + 10, ETH_ALEN); /* addr2 */ | |
54 | return ETH_ALEN; | |
55 | } | |
f0706e82 | 56 | |
4150c572 JB |
57 | /* must be called under mdev tx lock */ |
58 | static void ieee80211_configure_filter(struct ieee80211_local *local) | |
59 | { | |
60 | unsigned int changed_flags; | |
61 | unsigned int new_flags = 0; | |
62 | ||
53918994 | 63 | if (atomic_read(&local->iff_promiscs)) |
4150c572 JB |
64 | new_flags |= FIF_PROMISC_IN_BSS; |
65 | ||
53918994 | 66 | if (atomic_read(&local->iff_allmultis)) |
4150c572 JB |
67 | new_flags |= FIF_ALLMULTI; |
68 | ||
69 | if (local->monitors) | |
8cc9a739 MW |
70 | new_flags |= FIF_BCN_PRBRESP_PROMISC; |
71 | ||
72 | if (local->fif_fcsfail) | |
73 | new_flags |= FIF_FCSFAIL; | |
74 | ||
75 | if (local->fif_plcpfail) | |
76 | new_flags |= FIF_PLCPFAIL; | |
77 | ||
78 | if (local->fif_control) | |
79 | new_flags |= FIF_CONTROL; | |
80 | ||
81 | if (local->fif_other_bss) | |
82 | new_flags |= FIF_OTHER_BSS; | |
4150c572 JB |
83 | |
84 | changed_flags = local->filter_flags ^ new_flags; | |
85 | ||
86 | /* be a bit nasty */ | |
87 | new_flags |= (1<<31); | |
88 | ||
89 | local->ops->configure_filter(local_to_hw(local), | |
90 | changed_flags, &new_flags, | |
91 | local->mdev->mc_count, | |
92 | local->mdev->mc_list); | |
93 | ||
94 | WARN_ON(new_flags & (1<<31)); | |
95 | ||
96 | local->filter_flags = new_flags & ~(1<<31); | |
97 | } | |
98 | ||
b2c258fb | 99 | /* master interface */ |
f0706e82 | 100 | |
b2c258fb JB |
101 | static int ieee80211_master_open(struct net_device *dev) |
102 | { | |
103 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
104 | struct ieee80211_sub_if_data *sdata; | |
105 | int res = -EOPNOTSUPP; | |
f0706e82 | 106 | |
79010420 JB |
107 | /* we hold the RTNL here so can safely walk the list */ |
108 | list_for_each_entry(sdata, &local->interfaces, list) { | |
b2c258fb JB |
109 | if (sdata->dev != dev && netif_running(sdata->dev)) { |
110 | res = 0; | |
111 | break; | |
112 | } | |
113 | } | |
b2c258fb JB |
114 | return res; |
115 | } | |
f0706e82 | 116 | |
b2c258fb | 117 | static int ieee80211_master_stop(struct net_device *dev) |
f0706e82 | 118 | { |
b2c258fb JB |
119 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); |
120 | struct ieee80211_sub_if_data *sdata; | |
f0706e82 | 121 | |
79010420 JB |
122 | /* we hold the RTNL here so can safely walk the list */ |
123 | list_for_each_entry(sdata, &local->interfaces, list) | |
b2c258fb JB |
124 | if (sdata->dev != dev && netif_running(sdata->dev)) |
125 | dev_close(sdata->dev); | |
f0706e82 | 126 | |
b2c258fb JB |
127 | return 0; |
128 | } | |
f0706e82 | 129 | |
4150c572 JB |
130 | static void ieee80211_master_set_multicast_list(struct net_device *dev) |
131 | { | |
132 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
133 | ||
134 | ieee80211_configure_filter(local); | |
135 | } | |
136 | ||
b2c258fb | 137 | /* regular interfaces */ |
f0706e82 | 138 | |
b2c258fb | 139 | static int ieee80211_change_mtu(struct net_device *dev, int new_mtu) |
f0706e82 | 140 | { |
b2c258fb JB |
141 | /* FIX: what would be proper limits for MTU? |
142 | * This interface uses 802.3 frames. */ | |
143 | if (new_mtu < 256 || new_mtu > IEEE80211_MAX_DATA_LEN - 24 - 6) { | |
144 | printk(KERN_WARNING "%s: invalid MTU %d\n", | |
145 | dev->name, new_mtu); | |
146 | return -EINVAL; | |
147 | } | |
f0706e82 | 148 | |
b2c258fb JB |
149 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
150 | printk(KERN_DEBUG "%s: setting MTU %d\n", dev->name, new_mtu); | |
151 | #endif /* CONFIG_MAC80211_VERBOSE_DEBUG */ | |
152 | dev->mtu = new_mtu; | |
f0706e82 JB |
153 | return 0; |
154 | } | |
155 | ||
b2c258fb JB |
156 | static inline int identical_mac_addr_allowed(int type1, int type2) |
157 | { | |
158 | return (type1 == IEEE80211_IF_TYPE_MNTR || | |
159 | type2 == IEEE80211_IF_TYPE_MNTR || | |
160 | (type1 == IEEE80211_IF_TYPE_AP && | |
161 | type2 == IEEE80211_IF_TYPE_WDS) || | |
162 | (type1 == IEEE80211_IF_TYPE_WDS && | |
163 | (type2 == IEEE80211_IF_TYPE_WDS || | |
164 | type2 == IEEE80211_IF_TYPE_AP)) || | |
165 | (type1 == IEEE80211_IF_TYPE_AP && | |
166 | type2 == IEEE80211_IF_TYPE_VLAN) || | |
167 | (type1 == IEEE80211_IF_TYPE_VLAN && | |
168 | (type2 == IEEE80211_IF_TYPE_AP || | |
169 | type2 == IEEE80211_IF_TYPE_VLAN))); | |
170 | } | |
f0706e82 | 171 | |
b2c258fb | 172 | static int ieee80211_open(struct net_device *dev) |
e2ebc74d | 173 | { |
b2c258fb JB |
174 | struct ieee80211_sub_if_data *sdata, *nsdata; |
175 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
176 | struct ieee80211_if_init_conf conf; | |
177 | int res; | |
ceffefd1 | 178 | bool need_hw_reconfig = 0; |
f0706e82 | 179 | |
b2c258fb | 180 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
0ec3ca44 | 181 | |
79010420 JB |
182 | /* we hold the RTNL here so can safely walk the list */ |
183 | list_for_each_entry(nsdata, &local->interfaces, list) { | |
b2c258fb | 184 | struct net_device *ndev = nsdata->dev; |
e2ebc74d | 185 | |
b2c258fb | 186 | if (ndev != dev && ndev != local->mdev && netif_running(ndev) && |
0ec3ca44 JB |
187 | compare_ether_addr(dev->dev_addr, ndev->dev_addr) == 0) { |
188 | /* | |
189 | * check whether it may have the same address | |
190 | */ | |
51fb61e7 JB |
191 | if (!identical_mac_addr_allowed(sdata->vif.type, |
192 | nsdata->vif.type)) | |
0ec3ca44 | 193 | return -ENOTUNIQ; |
0ec3ca44 JB |
194 | |
195 | /* | |
196 | * can only add VLANs to enabled APs | |
197 | */ | |
51fb61e7 JB |
198 | if (sdata->vif.type == IEEE80211_IF_TYPE_VLAN && |
199 | nsdata->vif.type == IEEE80211_IF_TYPE_AP && | |
0ec3ca44 JB |
200 | netif_running(nsdata->dev)) |
201 | sdata->u.vlan.ap = nsdata; | |
b2c258fb JB |
202 | } |
203 | } | |
f0706e82 | 204 | |
51fb61e7 | 205 | switch (sdata->vif.type) { |
0ec3ca44 JB |
206 | case IEEE80211_IF_TYPE_WDS: |
207 | if (is_zero_ether_addr(sdata->u.wds.remote_addr)) | |
208 | return -ENOLINK; | |
209 | break; | |
210 | case IEEE80211_IF_TYPE_VLAN: | |
211 | if (!sdata->u.vlan.ap) | |
212 | return -ENOLINK; | |
213 | break; | |
fb1c1cd6 | 214 | case IEEE80211_IF_TYPE_AP: |
fb1c1cd6 JB |
215 | case IEEE80211_IF_TYPE_STA: |
216 | case IEEE80211_IF_TYPE_MNTR: | |
217 | case IEEE80211_IF_TYPE_IBSS: | |
218 | /* no special treatment */ | |
219 | break; | |
a2897552 JB |
220 | case IEEE80211_IF_TYPE_INVALID: |
221 | /* cannot happen */ | |
222 | WARN_ON(1); | |
223 | break; | |
0ec3ca44 | 224 | } |
f0706e82 | 225 | |
b2c258fb JB |
226 | if (local->open_count == 0) { |
227 | res = 0; | |
4150c572 JB |
228 | if (local->ops->start) |
229 | res = local->ops->start(local_to_hw(local)); | |
230 | if (res) | |
b2c258fb | 231 | return res; |
ceffefd1 | 232 | need_hw_reconfig = 1; |
cdcb006f | 233 | ieee80211_led_radio(local, local->hw.conf.radio_enabled); |
b2c258fb | 234 | } |
f0706e82 | 235 | |
51fb61e7 | 236 | switch (sdata->vif.type) { |
0ec3ca44 JB |
237 | case IEEE80211_IF_TYPE_VLAN: |
238 | list_add(&sdata->u.vlan.list, &sdata->u.vlan.ap->u.ap.vlans); | |
239 | /* no need to tell driver */ | |
240 | break; | |
4150c572 JB |
241 | case IEEE80211_IF_TYPE_MNTR: |
242 | /* must be before the call to ieee80211_configure_filter */ | |
b2c258fb | 243 | local->monitors++; |
8cc9a739 | 244 | if (local->monitors == 1) |
4150c572 | 245 | local->hw.conf.flags |= IEEE80211_CONF_RADIOTAP; |
8cc9a739 MW |
246 | |
247 | if (sdata->u.mntr_flags & MONITOR_FLAG_FCSFAIL) | |
248 | local->fif_fcsfail++; | |
249 | if (sdata->u.mntr_flags & MONITOR_FLAG_PLCPFAIL) | |
250 | local->fif_plcpfail++; | |
251 | if (sdata->u.mntr_flags & MONITOR_FLAG_CONTROL) | |
252 | local->fif_control++; | |
253 | if (sdata->u.mntr_flags & MONITOR_FLAG_OTHER_BSS) | |
254 | local->fif_other_bss++; | |
255 | ||
256 | netif_tx_lock_bh(local->mdev); | |
257 | ieee80211_configure_filter(local); | |
258 | netif_tx_unlock_bh(local->mdev); | |
4150c572 JB |
259 | break; |
260 | case IEEE80211_IF_TYPE_STA: | |
261 | case IEEE80211_IF_TYPE_IBSS: | |
262 | sdata->u.sta.flags &= ~IEEE80211_STA_PREV_BSSID_SET; | |
263 | /* fall through */ | |
264 | default: | |
32bfd35d | 265 | conf.vif = &sdata->vif; |
51fb61e7 | 266 | conf.type = sdata->vif.type; |
4150c572 JB |
267 | conf.mac_addr = dev->dev_addr; |
268 | res = local->ops->add_interface(local_to_hw(local), &conf); | |
269 | if (res && !local->open_count && local->ops->stop) | |
270 | local->ops->stop(local_to_hw(local)); | |
271 | if (res) | |
272 | return res; | |
273 | ||
b2c258fb | 274 | ieee80211_if_config(dev); |
d9430a32 | 275 | ieee80211_reset_erp_info(dev); |
11a843b7 | 276 | ieee80211_enable_keys(sdata); |
4150c572 | 277 | |
51fb61e7 | 278 | if (sdata->vif.type == IEEE80211_IF_TYPE_STA && |
ddd3d2be | 279 | !(sdata->flags & IEEE80211_SDATA_USERSPACE_MLME)) |
4150c572 JB |
280 | netif_carrier_off(dev); |
281 | else | |
282 | netif_carrier_on(dev); | |
d9430a32 | 283 | } |
f0706e82 | 284 | |
4150c572 JB |
285 | if (local->open_count == 0) { |
286 | res = dev_open(local->mdev); | |
287 | WARN_ON(res); | |
4150c572 JB |
288 | tasklet_enable(&local->tx_pending_tasklet); |
289 | tasklet_enable(&local->tasklet); | |
290 | } | |
291 | ||
c1428b3f JB |
292 | /* |
293 | * set_multicast_list will be invoked by the networking core | |
294 | * which will check whether any increments here were done in | |
295 | * error and sync them down to the hardware as filter flags. | |
296 | */ | |
297 | if (sdata->flags & IEEE80211_SDATA_ALLMULTI) | |
298 | atomic_inc(&local->iff_allmultis); | |
299 | ||
300 | if (sdata->flags & IEEE80211_SDATA_PROMISC) | |
301 | atomic_inc(&local->iff_promiscs); | |
302 | ||
4150c572 | 303 | local->open_count++; |
ceffefd1 MB |
304 | if (need_hw_reconfig) |
305 | ieee80211_hw_config(local); | |
f0706e82 | 306 | |
b2c258fb | 307 | netif_start_queue(dev); |
4150c572 | 308 | |
b2c258fb | 309 | return 0; |
f0706e82 | 310 | } |
f0706e82 | 311 | |
4150c572 | 312 | static int ieee80211_stop(struct net_device *dev) |
f0706e82 | 313 | { |
4150c572 | 314 | struct ieee80211_sub_if_data *sdata; |
f0706e82 | 315 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); |
4150c572 | 316 | struct ieee80211_if_init_conf conf; |
07db2183 RR |
317 | struct sta_info *sta; |
318 | int i; | |
4150c572 JB |
319 | |
320 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
321 | ||
07db2183 | 322 | list_for_each_entry(sta, &local->sta_list, list) { |
5b3d71d9 RR |
323 | if (sta->dev == dev) |
324 | for (i = 0; i < STA_TID_NUM; i++) | |
325 | ieee80211_sta_stop_rx_ba_session(sta->dev, | |
326 | sta->addr, i, | |
327 | WLAN_BACK_RECIPIENT, | |
07db2183 RR |
328 | WLAN_REASON_QSTA_LEAVE_QBSS); |
329 | } | |
330 | ||
4150c572 JB |
331 | netif_stop_queue(dev); |
332 | ||
c1428b3f JB |
333 | /* |
334 | * Don't count this interface for promisc/allmulti while it | |
335 | * is down. dev_mc_unsync() will invoke set_multicast_list | |
336 | * on the master interface which will sync these down to the | |
337 | * hardware as filter flags. | |
338 | */ | |
339 | if (sdata->flags & IEEE80211_SDATA_ALLMULTI) | |
340 | atomic_dec(&local->iff_allmultis); | |
341 | ||
342 | if (sdata->flags & IEEE80211_SDATA_PROMISC) | |
343 | atomic_dec(&local->iff_promiscs); | |
344 | ||
4150c572 JB |
345 | dev_mc_unsync(local->mdev, dev); |
346 | ||
5dfdaf58 | 347 | /* APs need special treatment */ |
51fb61e7 | 348 | if (sdata->vif.type == IEEE80211_IF_TYPE_AP) { |
0ec3ca44 | 349 | struct ieee80211_sub_if_data *vlan, *tmp; |
5dfdaf58 | 350 | struct beacon_data *old_beacon = sdata->u.ap.beacon; |
0ec3ca44 | 351 | |
5dfdaf58 JB |
352 | /* remove beacon */ |
353 | rcu_assign_pointer(sdata->u.ap.beacon, NULL); | |
354 | synchronize_rcu(); | |
355 | kfree(old_beacon); | |
356 | ||
357 | /* down all dependent devices, that is VLANs */ | |
0ec3ca44 JB |
358 | list_for_each_entry_safe(vlan, tmp, &sdata->u.ap.vlans, |
359 | u.vlan.list) | |
360 | dev_close(vlan->dev); | |
361 | WARN_ON(!list_empty(&sdata->u.ap.vlans)); | |
362 | } | |
363 | ||
4150c572 | 364 | local->open_count--; |
f0706e82 | 365 | |
51fb61e7 | 366 | switch (sdata->vif.type) { |
0ec3ca44 JB |
367 | case IEEE80211_IF_TYPE_VLAN: |
368 | list_del(&sdata->u.vlan.list); | |
369 | sdata->u.vlan.ap = NULL; | |
370 | /* no need to tell driver */ | |
371 | break; | |
4150c572 JB |
372 | case IEEE80211_IF_TYPE_MNTR: |
373 | local->monitors--; | |
8cc9a739 | 374 | if (local->monitors == 0) |
8b393f1d | 375 | local->hw.conf.flags &= ~IEEE80211_CONF_RADIOTAP; |
8cc9a739 MW |
376 | |
377 | if (sdata->u.mntr_flags & MONITOR_FLAG_FCSFAIL) | |
378 | local->fif_fcsfail--; | |
379 | if (sdata->u.mntr_flags & MONITOR_FLAG_PLCPFAIL) | |
380 | local->fif_plcpfail--; | |
381 | if (sdata->u.mntr_flags & MONITOR_FLAG_CONTROL) | |
382 | local->fif_control--; | |
383 | if (sdata->u.mntr_flags & MONITOR_FLAG_OTHER_BSS) | |
384 | local->fif_other_bss--; | |
385 | ||
386 | netif_tx_lock_bh(local->mdev); | |
387 | ieee80211_configure_filter(local); | |
388 | netif_tx_unlock_bh(local->mdev); | |
4150c572 | 389 | break; |
b2c258fb JB |
390 | case IEEE80211_IF_TYPE_STA: |
391 | case IEEE80211_IF_TYPE_IBSS: | |
392 | sdata->u.sta.state = IEEE80211_DISABLED; | |
393 | del_timer_sync(&sdata->u.sta.timer); | |
2a8a9a88 | 394 | /* |
79010420 JB |
395 | * When we get here, the interface is marked down. |
396 | * Call synchronize_rcu() to wait for the RX path | |
397 | * should it be using the interface and enqueuing | |
398 | * frames at this very time on another CPU. | |
2a8a9a88 | 399 | */ |
79010420 | 400 | synchronize_rcu(); |
b2c258fb | 401 | skb_queue_purge(&sdata->u.sta.skb_queue); |
2a8a9a88 | 402 | |
ece8eddd ZY |
403 | if (local->scan_dev == sdata->dev) { |
404 | if (!local->ops->hw_scan) { | |
405 | local->sta_sw_scanning = 0; | |
406 | cancel_delayed_work(&local->scan_work); | |
407 | } else | |
408 | local->sta_hw_scanning = 0; | |
b2c258fb | 409 | } |
ece8eddd | 410 | |
b2c258fb | 411 | flush_workqueue(local->hw.workqueue); |
a10605e5 ZY |
412 | |
413 | sdata->u.sta.flags &= ~IEEE80211_STA_PRIVACY_INVOKED; | |
414 | kfree(sdata->u.sta.extra_ie); | |
415 | sdata->u.sta.extra_ie = NULL; | |
416 | sdata->u.sta.extra_ie_len = 0; | |
4150c572 JB |
417 | /* fall through */ |
418 | default: | |
32bfd35d | 419 | conf.vif = &sdata->vif; |
51fb61e7 | 420 | conf.type = sdata->vif.type; |
4150c572 | 421 | conf.mac_addr = dev->dev_addr; |
11a843b7 JB |
422 | /* disable all keys for as long as this netdev is down */ |
423 | ieee80211_disable_keys(sdata); | |
4150c572 | 424 | local->ops->remove_interface(local_to_hw(local), &conf); |
f0706e82 JB |
425 | } |
426 | ||
b2c258fb JB |
427 | if (local->open_count == 0) { |
428 | if (netif_running(local->mdev)) | |
429 | dev_close(local->mdev); | |
4150c572 | 430 | |
b2c258fb JB |
431 | if (local->ops->stop) |
432 | local->ops->stop(local_to_hw(local)); | |
4150c572 | 433 | |
cdcb006f ID |
434 | ieee80211_led_radio(local, 0); |
435 | ||
b2c258fb JB |
436 | tasklet_disable(&local->tx_pending_tasklet); |
437 | tasklet_disable(&local->tasklet); | |
438 | } | |
b2c258fb | 439 | |
f0706e82 JB |
440 | return 0; |
441 | } | |
442 | ||
eadc8d9e RR |
443 | int ieee80211_start_tx_ba_session(struct ieee80211_hw *hw, u8 *ra, u16 tid) |
444 | { | |
445 | struct ieee80211_local *local = hw_to_local(hw); | |
446 | struct sta_info *sta; | |
447 | struct ieee80211_sub_if_data *sdata; | |
448 | u16 start_seq_num = 0; | |
449 | u8 *state; | |
450 | int ret; | |
451 | DECLARE_MAC_BUF(mac); | |
452 | ||
453 | if (tid >= STA_TID_NUM) | |
454 | return -EINVAL; | |
455 | ||
456 | #ifdef CONFIG_MAC80211_HT_DEBUG | |
457 | printk(KERN_DEBUG "Open BA session requested for %s tid %u\n", | |
458 | print_mac(mac, ra), tid); | |
459 | #endif /* CONFIG_MAC80211_HT_DEBUG */ | |
460 | ||
461 | sta = sta_info_get(local, ra); | |
462 | if (!sta) { | |
463 | printk(KERN_DEBUG "Could not find the station\n"); | |
464 | return -ENOENT; | |
465 | } | |
466 | ||
467 | spin_lock_bh(&sta->ampdu_mlme.ampdu_tx); | |
468 | ||
469 | /* we have tried too many times, receiver does not want A-MPDU */ | |
470 | if (sta->ampdu_mlme.tid_tx[tid].addba_req_num > HT_AGG_MAX_RETRIES) { | |
471 | ret = -EBUSY; | |
472 | goto start_ba_exit; | |
473 | } | |
474 | ||
475 | state = &sta->ampdu_mlme.tid_tx[tid].state; | |
476 | /* check if the TID is not in aggregation flow already */ | |
477 | if (*state != HT_AGG_STATE_IDLE) { | |
478 | #ifdef CONFIG_MAC80211_HT_DEBUG | |
479 | printk(KERN_DEBUG "BA request denied - session is not " | |
480 | "idle on tid %u\n", tid); | |
481 | #endif /* CONFIG_MAC80211_HT_DEBUG */ | |
482 | ret = -EAGAIN; | |
483 | goto start_ba_exit; | |
484 | } | |
485 | ||
486 | /* ensure that TX flow won't interrupt us | |
487 | * until the end of the call to requeue function */ | |
488 | spin_lock_bh(&local->mdev->queue_lock); | |
489 | ||
490 | /* create a new queue for this aggregation */ | |
9e723492 | 491 | ret = ieee80211_ht_agg_queue_add(local, sta, tid); |
eadc8d9e RR |
492 | |
493 | /* case no queue is available to aggregation | |
494 | * don't switch to aggregation */ | |
495 | if (ret) { | |
496 | #ifdef CONFIG_MAC80211_HT_DEBUG | |
497 | printk(KERN_DEBUG "BA request denied - no queue available for" | |
498 | " tid %d\n", tid); | |
499 | #endif /* CONFIG_MAC80211_HT_DEBUG */ | |
500 | spin_unlock_bh(&local->mdev->queue_lock); | |
501 | goto start_ba_exit; | |
502 | } | |
503 | sdata = IEEE80211_DEV_TO_SUB_IF(sta->dev); | |
504 | ||
505 | /* Ok, the Addba frame hasn't been sent yet, but if the driver calls the | |
506 | * call back right away, it must see that the flow has begun */ | |
507 | *state |= HT_ADDBA_REQUESTED_MSK; | |
508 | ||
509 | if (local->ops->ampdu_action) | |
510 | ret = local->ops->ampdu_action(hw, IEEE80211_AMPDU_TX_START, | |
511 | ra, tid, &start_seq_num); | |
512 | ||
513 | if (ret) { | |
514 | /* No need to requeue the packets in the agg queue, since we | |
515 | * held the tx lock: no packet could be enqueued to the newly | |
516 | * allocated queue */ | |
9e723492 | 517 | ieee80211_ht_agg_queue_remove(local, sta, tid, 0); |
eadc8d9e RR |
518 | #ifdef CONFIG_MAC80211_HT_DEBUG |
519 | printk(KERN_DEBUG "BA request denied - HW or queue unavailable" | |
520 | " for tid %d\n", tid); | |
521 | #endif /* CONFIG_MAC80211_HT_DEBUG */ | |
522 | spin_unlock_bh(&local->mdev->queue_lock); | |
523 | *state = HT_AGG_STATE_IDLE; | |
524 | goto start_ba_exit; | |
525 | } | |
526 | ||
527 | /* Will put all the packets in the new SW queue */ | |
9e723492 | 528 | ieee80211_requeue(local, ieee802_1d_to_ac[tid]); |
eadc8d9e RR |
529 | spin_unlock_bh(&local->mdev->queue_lock); |
530 | ||
531 | /* We have most probably almost emptied the legacy queue */ | |
532 | /* ieee80211_wake_queue(local_to_hw(local), ieee802_1d_to_ac[tid]); */ | |
533 | ||
534 | /* send an addBA request */ | |
535 | sta->ampdu_mlme.dialog_token_allocator++; | |
536 | sta->ampdu_mlme.tid_tx[tid].dialog_token = | |
537 | sta->ampdu_mlme.dialog_token_allocator; | |
538 | sta->ampdu_mlme.tid_tx[tid].ssn = start_seq_num; | |
539 | ||
540 | ieee80211_send_addba_request(sta->dev, ra, tid, | |
541 | sta->ampdu_mlme.tid_tx[tid].dialog_token, | |
542 | sta->ampdu_mlme.tid_tx[tid].ssn, | |
543 | 0x40, 5000); | |
544 | ||
545 | /* activate the timer for the recipient's addBA response */ | |
546 | sta->ampdu_mlme.tid_tx[tid].addba_resp_timer.expires = | |
547 | jiffies + ADDBA_RESP_INTERVAL; | |
548 | add_timer(&sta->ampdu_mlme.tid_tx[tid].addba_resp_timer); | |
549 | printk(KERN_DEBUG "activated addBA response timer on tid %d\n", tid); | |
550 | ||
551 | start_ba_exit: | |
552 | spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx); | |
553 | sta_info_put(sta); | |
554 | return ret; | |
555 | } | |
556 | EXPORT_SYMBOL(ieee80211_start_tx_ba_session); | |
557 | ||
558 | int ieee80211_stop_tx_ba_session(struct ieee80211_hw *hw, | |
559 | u8 *ra, u16 tid, | |
560 | enum ieee80211_back_parties initiator) | |
561 | { | |
562 | struct ieee80211_local *local = hw_to_local(hw); | |
563 | struct sta_info *sta; | |
564 | u8 *state; | |
565 | int ret = 0; | |
566 | DECLARE_MAC_BUF(mac); | |
567 | ||
568 | if (tid >= STA_TID_NUM) | |
569 | return -EINVAL; | |
570 | ||
571 | #ifdef CONFIG_MAC80211_HT_DEBUG | |
572 | printk(KERN_DEBUG "Stop a BA session requested for %s tid %u\n", | |
573 | print_mac(mac, ra), tid); | |
574 | #endif /* CONFIG_MAC80211_HT_DEBUG */ | |
575 | ||
576 | sta = sta_info_get(local, ra); | |
577 | if (!sta) | |
578 | return -ENOENT; | |
579 | ||
580 | /* check if the TID is in aggregation */ | |
581 | state = &sta->ampdu_mlme.tid_tx[tid].state; | |
582 | spin_lock_bh(&sta->ampdu_mlme.ampdu_tx); | |
583 | ||
584 | if (*state != HT_AGG_STATE_OPERATIONAL) { | |
585 | #ifdef CONFIG_MAC80211_HT_DEBUG | |
586 | printk(KERN_DEBUG "Try to stop Tx aggregation on" | |
587 | " non active TID\n"); | |
588 | #endif /* CONFIG_MAC80211_HT_DEBUG */ | |
589 | ret = -ENOENT; | |
590 | goto stop_BA_exit; | |
591 | } | |
592 | ||
593 | ieee80211_stop_queue(hw, sta->tid_to_tx_q[tid]); | |
594 | ||
595 | *state = HT_AGG_STATE_REQ_STOP_BA_MSK | | |
596 | (initiator << HT_AGG_STATE_INITIATOR_SHIFT); | |
597 | ||
598 | if (local->ops->ampdu_action) | |
599 | ret = local->ops->ampdu_action(hw, IEEE80211_AMPDU_TX_STOP, | |
600 | ra, tid, NULL); | |
601 | ||
602 | /* case HW denied going back to legacy */ | |
603 | if (ret) { | |
604 | WARN_ON(ret != -EBUSY); | |
605 | *state = HT_AGG_STATE_OPERATIONAL; | |
606 | ieee80211_wake_queue(hw, sta->tid_to_tx_q[tid]); | |
607 | goto stop_BA_exit; | |
608 | } | |
609 | ||
610 | stop_BA_exit: | |
611 | spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx); | |
612 | sta_info_put(sta); | |
613 | return ret; | |
614 | } | |
615 | EXPORT_SYMBOL(ieee80211_stop_tx_ba_session); | |
616 | ||
617 | void ieee80211_start_tx_ba_cb(struct ieee80211_hw *hw, u8 *ra, u16 tid) | |
618 | { | |
619 | struct ieee80211_local *local = hw_to_local(hw); | |
620 | struct sta_info *sta; | |
621 | u8 *state; | |
622 | DECLARE_MAC_BUF(mac); | |
623 | ||
624 | if (tid >= STA_TID_NUM) { | |
625 | printk(KERN_DEBUG "Bad TID value: tid = %d (>= %d)\n", | |
626 | tid, STA_TID_NUM); | |
627 | return; | |
628 | } | |
629 | ||
630 | sta = sta_info_get(local, ra); | |
631 | if (!sta) { | |
632 | printk(KERN_DEBUG "Could not find station: %s\n", | |
633 | print_mac(mac, ra)); | |
634 | return; | |
635 | } | |
636 | ||
637 | state = &sta->ampdu_mlme.tid_tx[tid].state; | |
638 | spin_lock_bh(&sta->ampdu_mlme.ampdu_tx); | |
639 | ||
640 | if (!(*state & HT_ADDBA_REQUESTED_MSK)) { | |
641 | printk(KERN_DEBUG "addBA was not requested yet, state is %d\n", | |
642 | *state); | |
643 | spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx); | |
644 | sta_info_put(sta); | |
645 | return; | |
646 | } | |
647 | ||
648 | WARN_ON_ONCE(*state & HT_ADDBA_DRV_READY_MSK); | |
649 | ||
650 | *state |= HT_ADDBA_DRV_READY_MSK; | |
651 | ||
652 | if (*state == HT_AGG_STATE_OPERATIONAL) { | |
653 | printk(KERN_DEBUG "Aggregation is on for tid %d \n", tid); | |
654 | ieee80211_wake_queue(hw, sta->tid_to_tx_q[tid]); | |
655 | } | |
656 | spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx); | |
657 | sta_info_put(sta); | |
658 | } | |
659 | EXPORT_SYMBOL(ieee80211_start_tx_ba_cb); | |
660 | ||
661 | void ieee80211_stop_tx_ba_cb(struct ieee80211_hw *hw, u8 *ra, u8 tid) | |
662 | { | |
663 | struct ieee80211_local *local = hw_to_local(hw); | |
664 | struct sta_info *sta; | |
665 | u8 *state; | |
666 | int agg_queue; | |
667 | DECLARE_MAC_BUF(mac); | |
668 | ||
669 | if (tid >= STA_TID_NUM) { | |
670 | printk(KERN_DEBUG "Bad TID value: tid = %d (>= %d)\n", | |
671 | tid, STA_TID_NUM); | |
672 | return; | |
673 | } | |
674 | ||
675 | printk(KERN_DEBUG "Stop a BA session requested on DA %s tid %d\n", | |
676 | print_mac(mac, ra), tid); | |
677 | ||
678 | sta = sta_info_get(local, ra); | |
679 | if (!sta) { | |
680 | printk(KERN_DEBUG "Could not find station: %s\n", | |
681 | print_mac(mac, ra)); | |
682 | return; | |
683 | } | |
684 | state = &sta->ampdu_mlme.tid_tx[tid].state; | |
685 | ||
686 | spin_lock_bh(&sta->ampdu_mlme.ampdu_tx); | |
687 | if ((*state & HT_AGG_STATE_REQ_STOP_BA_MSK) == 0) { | |
688 | printk(KERN_DEBUG "unexpected callback to A-MPDU stop\n"); | |
689 | sta_info_put(sta); | |
690 | spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx); | |
691 | return; | |
692 | } | |
693 | ||
694 | if (*state & HT_AGG_STATE_INITIATOR_MSK) | |
695 | ieee80211_send_delba(sta->dev, ra, tid, | |
696 | WLAN_BACK_INITIATOR, WLAN_REASON_QSTA_NOT_USE); | |
697 | ||
698 | agg_queue = sta->tid_to_tx_q[tid]; | |
699 | ||
700 | /* avoid ordering issues: we are the only one that can modify | |
701 | * the content of the qdiscs */ | |
702 | spin_lock_bh(&local->mdev->queue_lock); | |
703 | /* remove the queue for this aggregation */ | |
9e723492 | 704 | ieee80211_ht_agg_queue_remove(local, sta, tid, 1); |
eadc8d9e RR |
705 | spin_unlock_bh(&local->mdev->queue_lock); |
706 | ||
707 | /* we just requeued the all the frames that were in the removed | |
708 | * queue, and since we might miss a softirq we do netif_schedule. | |
709 | * ieee80211_wake_queue is not used here as this queue is not | |
710 | * necessarily stopped */ | |
711 | netif_schedule(local->mdev); | |
712 | *state = HT_AGG_STATE_IDLE; | |
713 | sta->ampdu_mlme.tid_tx[tid].addba_req_num = 0; | |
714 | spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx); | |
715 | ||
716 | sta_info_put(sta); | |
717 | } | |
718 | EXPORT_SYMBOL(ieee80211_stop_tx_ba_cb); | |
719 | ||
720 | void ieee80211_start_tx_ba_cb_irqsafe(struct ieee80211_hw *hw, | |
721 | const u8 *ra, u16 tid) | |
722 | { | |
723 | struct ieee80211_local *local = hw_to_local(hw); | |
724 | struct ieee80211_ra_tid *ra_tid; | |
725 | struct sk_buff *skb = dev_alloc_skb(0); | |
726 | ||
727 | if (unlikely(!skb)) { | |
728 | if (net_ratelimit()) | |
729 | printk(KERN_WARNING "%s: Not enough memory, " | |
730 | "dropping start BA session", skb->dev->name); | |
731 | return; | |
732 | } | |
733 | ra_tid = (struct ieee80211_ra_tid *) &skb->cb; | |
734 | memcpy(&ra_tid->ra, ra, ETH_ALEN); | |
735 | ra_tid->tid = tid; | |
736 | ||
737 | skb->pkt_type = IEEE80211_ADDBA_MSG; | |
738 | skb_queue_tail(&local->skb_queue, skb); | |
739 | tasklet_schedule(&local->tasklet); | |
740 | } | |
741 | EXPORT_SYMBOL(ieee80211_start_tx_ba_cb_irqsafe); | |
742 | ||
743 | void ieee80211_stop_tx_ba_cb_irqsafe(struct ieee80211_hw *hw, | |
744 | const u8 *ra, u16 tid) | |
745 | { | |
746 | struct ieee80211_local *local = hw_to_local(hw); | |
747 | struct ieee80211_ra_tid *ra_tid; | |
748 | struct sk_buff *skb = dev_alloc_skb(0); | |
749 | ||
750 | if (unlikely(!skb)) { | |
751 | if (net_ratelimit()) | |
752 | printk(KERN_WARNING "%s: Not enough memory, " | |
753 | "dropping stop BA session", skb->dev->name); | |
754 | return; | |
755 | } | |
756 | ra_tid = (struct ieee80211_ra_tid *) &skb->cb; | |
757 | memcpy(&ra_tid->ra, ra, ETH_ALEN); | |
758 | ra_tid->tid = tid; | |
759 | ||
760 | skb->pkt_type = IEEE80211_DELBA_MSG; | |
761 | skb_queue_tail(&local->skb_queue, skb); | |
762 | tasklet_schedule(&local->tasklet); | |
763 | } | |
764 | EXPORT_SYMBOL(ieee80211_stop_tx_ba_cb_irqsafe); | |
765 | ||
f0706e82 JB |
766 | static void ieee80211_set_multicast_list(struct net_device *dev) |
767 | { | |
768 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
769 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
4150c572 | 770 | int allmulti, promisc, sdata_allmulti, sdata_promisc; |
f0706e82 | 771 | |
4150c572 JB |
772 | allmulti = !!(dev->flags & IFF_ALLMULTI); |
773 | promisc = !!(dev->flags & IFF_PROMISC); | |
b52f2198 JB |
774 | sdata_allmulti = !!(sdata->flags & IEEE80211_SDATA_ALLMULTI); |
775 | sdata_promisc = !!(sdata->flags & IEEE80211_SDATA_PROMISC); | |
4150c572 JB |
776 | |
777 | if (allmulti != sdata_allmulti) { | |
778 | if (dev->flags & IFF_ALLMULTI) | |
53918994 | 779 | atomic_inc(&local->iff_allmultis); |
4150c572 | 780 | else |
53918994 | 781 | atomic_dec(&local->iff_allmultis); |
13262ffd | 782 | sdata->flags ^= IEEE80211_SDATA_ALLMULTI; |
f0706e82 | 783 | } |
4150c572 JB |
784 | |
785 | if (promisc != sdata_promisc) { | |
786 | if (dev->flags & IFF_PROMISC) | |
53918994 | 787 | atomic_inc(&local->iff_promiscs); |
4150c572 | 788 | else |
53918994 | 789 | atomic_dec(&local->iff_promiscs); |
13262ffd | 790 | sdata->flags ^= IEEE80211_SDATA_PROMISC; |
f0706e82 | 791 | } |
4150c572 JB |
792 | |
793 | dev_mc_sync(local->mdev, dev); | |
f0706e82 JB |
794 | } |
795 | ||
3b04ddde SH |
796 | static const struct header_ops ieee80211_header_ops = { |
797 | .create = eth_header, | |
798 | .parse = header_parse_80211, | |
799 | .rebuild = eth_rebuild_header, | |
800 | .cache = eth_header_cache, | |
801 | .cache_update = eth_header_cache_update, | |
802 | }; | |
803 | ||
f9d540ee | 804 | /* Must not be called for mdev */ |
b2c258fb | 805 | void ieee80211_if_setup(struct net_device *dev) |
f0706e82 | 806 | { |
b2c258fb JB |
807 | ether_setup(dev); |
808 | dev->hard_start_xmit = ieee80211_subif_start_xmit; | |
809 | dev->wireless_handlers = &ieee80211_iw_handler_def; | |
810 | dev->set_multicast_list = ieee80211_set_multicast_list; | |
811 | dev->change_mtu = ieee80211_change_mtu; | |
b2c258fb JB |
812 | dev->open = ieee80211_open; |
813 | dev->stop = ieee80211_stop; | |
b2c258fb JB |
814 | dev->destructor = ieee80211_if_free; |
815 | } | |
f0706e82 | 816 | |
b2c258fb JB |
817 | /* WDS specialties */ |
818 | ||
819 | int ieee80211_if_update_wds(struct net_device *dev, u8 *remote_addr) | |
820 | { | |
821 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
822 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
823 | struct sta_info *sta; | |
0795af57 | 824 | DECLARE_MAC_BUF(mac); |
b2c258fb JB |
825 | |
826 | if (compare_ether_addr(remote_addr, sdata->u.wds.remote_addr) == 0) | |
827 | return 0; | |
828 | ||
829 | /* Create STA entry for the new peer */ | |
830 | sta = sta_info_add(local, dev, remote_addr, GFP_KERNEL); | |
831 | if (!sta) | |
832 | return -ENOMEM; | |
238814fd JB |
833 | |
834 | sta->flags |= WLAN_STA_AUTHORIZED; | |
835 | ||
b2c258fb JB |
836 | sta_info_put(sta); |
837 | ||
838 | /* Remove STA entry for the old peer */ | |
839 | sta = sta_info_get(local, sdata->u.wds.remote_addr); | |
840 | if (sta) { | |
be8755e1 | 841 | sta_info_free(sta); |
b2c258fb | 842 | sta_info_put(sta); |
b2c258fb JB |
843 | } else { |
844 | printk(KERN_DEBUG "%s: could not find STA entry for WDS link " | |
0795af57 JP |
845 | "peer %s\n", |
846 | dev->name, print_mac(mac, sdata->u.wds.remote_addr)); | |
b2c258fb JB |
847 | } |
848 | ||
849 | /* Update WDS link data */ | |
850 | memcpy(&sdata->u.wds.remote_addr, remote_addr, ETH_ALEN); | |
851 | ||
852 | return 0; | |
f0706e82 | 853 | } |
f0706e82 | 854 | |
b2c258fb JB |
855 | /* everything else */ |
856 | ||
b2c258fb JB |
857 | static int __ieee80211_if_config(struct net_device *dev, |
858 | struct sk_buff *beacon, | |
859 | struct ieee80211_tx_control *control) | |
860 | { | |
861 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
862 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
863 | struct ieee80211_if_conf conf; | |
b2c258fb JB |
864 | |
865 | if (!local->ops->config_interface || !netif_running(dev)) | |
f0706e82 | 866 | return 0; |
f0706e82 | 867 | |
b2c258fb | 868 | memset(&conf, 0, sizeof(conf)); |
51fb61e7 JB |
869 | conf.type = sdata->vif.type; |
870 | if (sdata->vif.type == IEEE80211_IF_TYPE_STA || | |
871 | sdata->vif.type == IEEE80211_IF_TYPE_IBSS) { | |
4150c572 | 872 | conf.bssid = sdata->u.sta.bssid; |
b2c258fb JB |
873 | conf.ssid = sdata->u.sta.ssid; |
874 | conf.ssid_len = sdata->u.sta.ssid_len; | |
51fb61e7 | 875 | } else if (sdata->vif.type == IEEE80211_IF_TYPE_AP) { |
b2c258fb JB |
876 | conf.ssid = sdata->u.ap.ssid; |
877 | conf.ssid_len = sdata->u.ap.ssid_len; | |
b2c258fb JB |
878 | conf.beacon = beacon; |
879 | conf.beacon_control = control; | |
f0706e82 | 880 | } |
b2c258fb | 881 | return local->ops->config_interface(local_to_hw(local), |
32bfd35d | 882 | &sdata->vif, &conf); |
f0706e82 JB |
883 | } |
884 | ||
b2c258fb JB |
885 | int ieee80211_if_config(struct net_device *dev) |
886 | { | |
887 | return __ieee80211_if_config(dev, NULL, NULL); | |
888 | } | |
f0706e82 | 889 | |
b2c258fb | 890 | int ieee80211_if_config_beacon(struct net_device *dev) |
f0706e82 | 891 | { |
f0706e82 | 892 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); |
b2c258fb | 893 | struct ieee80211_tx_control control; |
32bfd35d | 894 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
b2c258fb | 895 | struct sk_buff *skb; |
f0706e82 | 896 | |
b2c258fb | 897 | if (!(local->hw.flags & IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE)) |
f0706e82 | 898 | return 0; |
32bfd35d JB |
899 | skb = ieee80211_beacon_get(local_to_hw(local), &sdata->vif, |
900 | &control); | |
b2c258fb JB |
901 | if (!skb) |
902 | return -ENOMEM; | |
903 | return __ieee80211_if_config(dev, skb, &control); | |
904 | } | |
f0706e82 | 905 | |
b2c258fb JB |
906 | int ieee80211_hw_config(struct ieee80211_local *local) |
907 | { | |
b2c258fb JB |
908 | struct ieee80211_channel *chan; |
909 | int ret = 0; | |
f0706e82 | 910 | |
8318d78a | 911 | if (local->sta_sw_scanning) |
b2c258fb | 912 | chan = local->scan_channel; |
8318d78a | 913 | else |
b2c258fb | 914 | chan = local->oper_channel; |
f0706e82 | 915 | |
8318d78a JB |
916 | local->hw.conf.channel = chan; |
917 | ||
918 | if (!local->hw.conf.power_level) | |
919 | local->hw.conf.power_level = chan->max_power; | |
920 | else | |
921 | local->hw.conf.power_level = min(chan->max_power, | |
922 | local->hw.conf.power_level); | |
923 | ||
924 | local->hw.conf.max_antenna_gain = chan->max_antenna_gain; | |
f0706e82 | 925 | |
b2c258fb | 926 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
8318d78a JB |
927 | printk(KERN_DEBUG "%s: HW CONFIG: freq=%d\n", |
928 | wiphy_name(local->hw.wiphy), chan->center_freq); | |
929 | #endif | |
b2c258fb | 930 | |
f7c4daed | 931 | if (local->open_count) |
b2c258fb | 932 | ret = local->ops->config(local_to_hw(local), &local->hw.conf); |
f0706e82 | 933 | |
b2c258fb JB |
934 | return ret; |
935 | } | |
f0706e82 | 936 | |
d3c990fb RR |
937 | /** |
938 | * ieee80211_hw_config_ht should be used only after legacy configuration | |
939 | * has been determined, as ht configuration depends upon the hardware's | |
940 | * HT abilities for a _specific_ band. | |
941 | */ | |
942 | int ieee80211_hw_config_ht(struct ieee80211_local *local, int enable_ht, | |
943 | struct ieee80211_ht_info *req_ht_cap, | |
944 | struct ieee80211_ht_bss_info *req_bss_cap) | |
945 | { | |
946 | struct ieee80211_conf *conf = &local->hw.conf; | |
8318d78a | 947 | struct ieee80211_supported_band *sband; |
d3c990fb RR |
948 | int i; |
949 | ||
8318d78a JB |
950 | sband = local->hw.wiphy->bands[conf->channel->band]; |
951 | ||
d3c990fb | 952 | /* HT is not supported */ |
8318d78a | 953 | if (!sband->ht_info.ht_supported) { |
d3c990fb RR |
954 | conf->flags &= ~IEEE80211_CONF_SUPPORT_HT_MODE; |
955 | return -EOPNOTSUPP; | |
956 | } | |
957 | ||
958 | /* disable HT */ | |
959 | if (!enable_ht) { | |
960 | conf->flags &= ~IEEE80211_CONF_SUPPORT_HT_MODE; | |
961 | } else { | |
962 | conf->flags |= IEEE80211_CONF_SUPPORT_HT_MODE; | |
8318d78a | 963 | conf->ht_conf.cap = req_ht_cap->cap & sband->ht_info.cap; |
d3c990fb RR |
964 | conf->ht_conf.cap &= ~(IEEE80211_HT_CAP_MIMO_PS); |
965 | conf->ht_conf.cap |= | |
8318d78a | 966 | sband->ht_info.cap & IEEE80211_HT_CAP_MIMO_PS; |
d3c990fb RR |
967 | conf->ht_bss_conf.primary_channel = |
968 | req_bss_cap->primary_channel; | |
969 | conf->ht_bss_conf.bss_cap = req_bss_cap->bss_cap; | |
970 | conf->ht_bss_conf.bss_op_mode = req_bss_cap->bss_op_mode; | |
971 | for (i = 0; i < SUPP_MCS_SET_LEN; i++) | |
972 | conf->ht_conf.supp_mcs_set[i] = | |
8318d78a | 973 | sband->ht_info.supp_mcs_set[i] & |
d3c990fb RR |
974 | req_ht_cap->supp_mcs_set[i]; |
975 | ||
976 | /* In STA mode, this gives us indication | |
977 | * to the AP's mode of operation */ | |
978 | conf->ht_conf.ht_supported = 1; | |
979 | conf->ht_conf.ampdu_factor = req_ht_cap->ampdu_factor; | |
980 | conf->ht_conf.ampdu_density = req_ht_cap->ampdu_density; | |
981 | } | |
982 | ||
983 | local->ops->conf_ht(local_to_hw(local), &local->hw.conf); | |
984 | ||
985 | return 0; | |
986 | } | |
987 | ||
471b3efd JB |
988 | void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, |
989 | u32 changed) | |
d9430a32 | 990 | { |
471b3efd JB |
991 | struct ieee80211_local *local = sdata->local; |
992 | ||
993 | if (!changed) | |
994 | return; | |
995 | ||
996 | if (local->ops->bss_info_changed) | |
997 | local->ops->bss_info_changed(local_to_hw(local), | |
998 | &sdata->vif, | |
999 | &sdata->bss_conf, | |
1000 | changed); | |
d9430a32 DD |
1001 | } |
1002 | ||
1003 | void ieee80211_reset_erp_info(struct net_device *dev) | |
1004 | { | |
1005 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
1006 | ||
471b3efd JB |
1007 | sdata->bss_conf.use_cts_prot = 0; |
1008 | sdata->bss_conf.use_short_preamble = 0; | |
1009 | ieee80211_bss_info_change_notify(sdata, | |
1010 | BSS_CHANGED_ERP_CTS_PROT | | |
1011 | BSS_CHANGED_ERP_PREAMBLE); | |
d9430a32 DD |
1012 | } |
1013 | ||
f0706e82 JB |
1014 | void ieee80211_tx_status_irqsafe(struct ieee80211_hw *hw, |
1015 | struct sk_buff *skb, | |
1016 | struct ieee80211_tx_status *status) | |
1017 | { | |
1018 | struct ieee80211_local *local = hw_to_local(hw); | |
1019 | struct ieee80211_tx_status *saved; | |
1020 | int tmp; | |
1021 | ||
1022 | skb->dev = local->mdev; | |
1023 | saved = kmalloc(sizeof(struct ieee80211_tx_status), GFP_ATOMIC); | |
1024 | if (unlikely(!saved)) { | |
1025 | if (net_ratelimit()) | |
1026 | printk(KERN_WARNING "%s: Not enough memory, " | |
1027 | "dropping tx status", skb->dev->name); | |
1028 | /* should be dev_kfree_skb_irq, but due to this function being | |
1029 | * named _irqsafe instead of just _irq we can't be sure that | |
1030 | * people won't call it from non-irq contexts */ | |
1031 | dev_kfree_skb_any(skb); | |
1032 | return; | |
1033 | } | |
1034 | memcpy(saved, status, sizeof(struct ieee80211_tx_status)); | |
1035 | /* copy pointer to saved status into skb->cb for use by tasklet */ | |
1036 | memcpy(skb->cb, &saved, sizeof(saved)); | |
1037 | ||
1038 | skb->pkt_type = IEEE80211_TX_STATUS_MSG; | |
1039 | skb_queue_tail(status->control.flags & IEEE80211_TXCTL_REQ_TX_STATUS ? | |
1040 | &local->skb_queue : &local->skb_queue_unreliable, skb); | |
1041 | tmp = skb_queue_len(&local->skb_queue) + | |
1042 | skb_queue_len(&local->skb_queue_unreliable); | |
1043 | while (tmp > IEEE80211_IRQSAFE_QUEUE_LIMIT && | |
1044 | (skb = skb_dequeue(&local->skb_queue_unreliable))) { | |
1045 | memcpy(&saved, skb->cb, sizeof(saved)); | |
1046 | kfree(saved); | |
1047 | dev_kfree_skb_irq(skb); | |
1048 | tmp--; | |
1049 | I802_DEBUG_INC(local->tx_status_drop); | |
1050 | } | |
1051 | tasklet_schedule(&local->tasklet); | |
1052 | } | |
1053 | EXPORT_SYMBOL(ieee80211_tx_status_irqsafe); | |
1054 | ||
1055 | static void ieee80211_tasklet_handler(unsigned long data) | |
1056 | { | |
1057 | struct ieee80211_local *local = (struct ieee80211_local *) data; | |
1058 | struct sk_buff *skb; | |
1059 | struct ieee80211_rx_status rx_status; | |
1060 | struct ieee80211_tx_status *tx_status; | |
eadc8d9e | 1061 | struct ieee80211_ra_tid *ra_tid; |
f0706e82 JB |
1062 | |
1063 | while ((skb = skb_dequeue(&local->skb_queue)) || | |
1064 | (skb = skb_dequeue(&local->skb_queue_unreliable))) { | |
1065 | switch (skb->pkt_type) { | |
1066 | case IEEE80211_RX_MSG: | |
1067 | /* status is in skb->cb */ | |
1068 | memcpy(&rx_status, skb->cb, sizeof(rx_status)); | |
51fb61e7 | 1069 | /* Clear skb->pkt_type in order to not confuse kernel |
f0706e82 JB |
1070 | * netstack. */ |
1071 | skb->pkt_type = 0; | |
1072 | __ieee80211_rx(local_to_hw(local), skb, &rx_status); | |
1073 | break; | |
1074 | case IEEE80211_TX_STATUS_MSG: | |
1075 | /* get pointer to saved status out of skb->cb */ | |
1076 | memcpy(&tx_status, skb->cb, sizeof(tx_status)); | |
1077 | skb->pkt_type = 0; | |
1078 | ieee80211_tx_status(local_to_hw(local), | |
1079 | skb, tx_status); | |
1080 | kfree(tx_status); | |
1081 | break; | |
eadc8d9e RR |
1082 | case IEEE80211_DELBA_MSG: |
1083 | ra_tid = (struct ieee80211_ra_tid *) &skb->cb; | |
1084 | ieee80211_stop_tx_ba_cb(local_to_hw(local), | |
1085 | ra_tid->ra, ra_tid->tid); | |
1086 | dev_kfree_skb(skb); | |
1087 | break; | |
1088 | case IEEE80211_ADDBA_MSG: | |
1089 | ra_tid = (struct ieee80211_ra_tid *) &skb->cb; | |
1090 | ieee80211_start_tx_ba_cb(local_to_hw(local), | |
1091 | ra_tid->ra, ra_tid->tid); | |
1092 | dev_kfree_skb(skb); | |
1093 | break ; | |
f0706e82 JB |
1094 | default: /* should never get here! */ |
1095 | printk(KERN_ERR "%s: Unknown message type (%d)\n", | |
dd1cd4c6 | 1096 | wiphy_name(local->hw.wiphy), skb->pkt_type); |
f0706e82 JB |
1097 | dev_kfree_skb(skb); |
1098 | break; | |
1099 | } | |
1100 | } | |
1101 | } | |
1102 | ||
f0706e82 JB |
1103 | /* Remove added headers (e.g., QoS control), encryption header/MIC, etc. to |
1104 | * make a prepared TX frame (one that has been given to hw) to look like brand | |
1105 | * new IEEE 802.11 frame that is ready to go through TX processing again. | |
1106 | * Also, tx_packet_data in cb is restored from tx_control. */ | |
1107 | static void ieee80211_remove_tx_extra(struct ieee80211_local *local, | |
1108 | struct ieee80211_key *key, | |
1109 | struct sk_buff *skb, | |
1110 | struct ieee80211_tx_control *control) | |
1111 | { | |
1112 | int hdrlen, iv_len, mic_len; | |
1113 | struct ieee80211_tx_packet_data *pkt_data; | |
1114 | ||
1115 | pkt_data = (struct ieee80211_tx_packet_data *)skb->cb; | |
32bfd35d | 1116 | pkt_data->ifindex = vif_to_sdata(control->vif)->dev->ifindex; |
e8bf9649 JS |
1117 | pkt_data->flags = 0; |
1118 | if (control->flags & IEEE80211_TXCTL_REQ_TX_STATUS) | |
1119 | pkt_data->flags |= IEEE80211_TXPD_REQ_TX_STATUS; | |
1120 | if (control->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT) | |
1121 | pkt_data->flags |= IEEE80211_TXPD_DO_NOT_ENCRYPT; | |
1122 | if (control->flags & IEEE80211_TXCTL_REQUEUE) | |
1123 | pkt_data->flags |= IEEE80211_TXPD_REQUEUE; | |
678f5f71 JB |
1124 | if (control->flags & IEEE80211_TXCTL_EAPOL_FRAME) |
1125 | pkt_data->flags |= IEEE80211_TXPD_EAPOL_FRAME; | |
f0706e82 JB |
1126 | pkt_data->queue = control->queue; |
1127 | ||
1128 | hdrlen = ieee80211_get_hdrlen_from_skb(skb); | |
1129 | ||
1130 | if (!key) | |
1131 | goto no_key; | |
1132 | ||
8f20fc24 | 1133 | switch (key->conf.alg) { |
f0706e82 JB |
1134 | case ALG_WEP: |
1135 | iv_len = WEP_IV_LEN; | |
1136 | mic_len = WEP_ICV_LEN; | |
1137 | break; | |
1138 | case ALG_TKIP: | |
1139 | iv_len = TKIP_IV_LEN; | |
1140 | mic_len = TKIP_ICV_LEN; | |
1141 | break; | |
1142 | case ALG_CCMP: | |
1143 | iv_len = CCMP_HDR_LEN; | |
1144 | mic_len = CCMP_MIC_LEN; | |
1145 | break; | |
1146 | default: | |
1147 | goto no_key; | |
1148 | } | |
1149 | ||
8f20fc24 | 1150 | if (skb->len >= mic_len && |
11a843b7 | 1151 | !(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)) |
f0706e82 JB |
1152 | skb_trim(skb, skb->len - mic_len); |
1153 | if (skb->len >= iv_len && skb->len > hdrlen) { | |
1154 | memmove(skb->data + iv_len, skb->data, hdrlen); | |
1155 | skb_pull(skb, iv_len); | |
1156 | } | |
1157 | ||
1158 | no_key: | |
1159 | { | |
1160 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; | |
1161 | u16 fc = le16_to_cpu(hdr->frame_control); | |
1162 | if ((fc & 0x8C) == 0x88) /* QoS Control Field */ { | |
1163 | fc &= ~IEEE80211_STYPE_QOS_DATA; | |
1164 | hdr->frame_control = cpu_to_le16(fc); | |
1165 | memmove(skb->data + 2, skb->data, hdrlen - 2); | |
1166 | skb_pull(skb, 2); | |
1167 | } | |
1168 | } | |
1169 | } | |
1170 | ||
f0706e82 JB |
1171 | void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb, |
1172 | struct ieee80211_tx_status *status) | |
1173 | { | |
1174 | struct sk_buff *skb2; | |
1175 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; | |
1176 | struct ieee80211_local *local = hw_to_local(hw); | |
1177 | u16 frag, type; | |
b306f453 JB |
1178 | struct ieee80211_tx_status_rtap_hdr *rthdr; |
1179 | struct ieee80211_sub_if_data *sdata; | |
1180 | int monitors; | |
f0706e82 JB |
1181 | |
1182 | if (!status) { | |
1183 | printk(KERN_ERR | |
1184 | "%s: ieee80211_tx_status called with NULL status\n", | |
dd1cd4c6 | 1185 | wiphy_name(local->hw.wiphy)); |
f0706e82 JB |
1186 | dev_kfree_skb(skb); |
1187 | return; | |
1188 | } | |
1189 | ||
1190 | if (status->excessive_retries) { | |
1191 | struct sta_info *sta; | |
1192 | sta = sta_info_get(local, hdr->addr1); | |
1193 | if (sta) { | |
1194 | if (sta->flags & WLAN_STA_PS) { | |
1195 | /* The STA is in power save mode, so assume | |
1196 | * that this TX packet failed because of that. | |
1197 | */ | |
1198 | status->excessive_retries = 0; | |
1199 | status->flags |= IEEE80211_TX_STATUS_TX_FILTERED; | |
1200 | } | |
1201 | sta_info_put(sta); | |
1202 | } | |
1203 | } | |
1204 | ||
1205 | if (status->flags & IEEE80211_TX_STATUS_TX_FILTERED) { | |
1206 | struct sta_info *sta; | |
1207 | sta = sta_info_get(local, hdr->addr1); | |
1208 | if (sta) { | |
1209 | sta->tx_filtered_count++; | |
1210 | ||
1211 | /* Clear the TX filter mask for this STA when sending | |
1212 | * the next packet. If the STA went to power save mode, | |
1213 | * this will happen when it is waking up for the next | |
1214 | * time. */ | |
1215 | sta->clear_dst_mask = 1; | |
1216 | ||
1217 | /* TODO: Is the WLAN_STA_PS flag always set here or is | |
1218 | * the race between RX and TX status causing some | |
1219 | * packets to be filtered out before 80211.o gets an | |
1220 | * update for PS status? This seems to be the case, so | |
1221 | * no changes are likely to be needed. */ | |
1222 | if (sta->flags & WLAN_STA_PS && | |
1223 | skb_queue_len(&sta->tx_filtered) < | |
1224 | STA_MAX_TX_BUFFER) { | |
1225 | ieee80211_remove_tx_extra(local, sta->key, | |
1226 | skb, | |
1227 | &status->control); | |
1228 | skb_queue_tail(&sta->tx_filtered, skb); | |
1229 | } else if (!(sta->flags & WLAN_STA_PS) && | |
1230 | !(status->control.flags & IEEE80211_TXCTL_REQUEUE)) { | |
1231 | /* Software retry the packet once */ | |
1232 | status->control.flags |= IEEE80211_TXCTL_REQUEUE; | |
1233 | ieee80211_remove_tx_extra(local, sta->key, | |
1234 | skb, | |
1235 | &status->control); | |
1236 | dev_queue_xmit(skb); | |
1237 | } else { | |
1238 | if (net_ratelimit()) { | |
1239 | printk(KERN_DEBUG "%s: dropped TX " | |
1240 | "filtered frame queue_len=%d " | |
1241 | "PS=%d @%lu\n", | |
dd1cd4c6 | 1242 | wiphy_name(local->hw.wiphy), |
f0706e82 JB |
1243 | skb_queue_len( |
1244 | &sta->tx_filtered), | |
1245 | !!(sta->flags & WLAN_STA_PS), | |
1246 | jiffies); | |
1247 | } | |
1248 | dev_kfree_skb(skb); | |
1249 | } | |
1250 | sta_info_put(sta); | |
1251 | return; | |
1252 | } | |
1abbe498 MN |
1253 | } else |
1254 | rate_control_tx_status(local->mdev, skb, status); | |
f0706e82 JB |
1255 | |
1256 | ieee80211_led_tx(local, 0); | |
1257 | ||
1258 | /* SNMP counters | |
1259 | * Fragments are passed to low-level drivers as separate skbs, so these | |
1260 | * are actually fragments, not frames. Update frame counters only for | |
1261 | * the first fragment of the frame. */ | |
1262 | ||
1263 | frag = le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_FRAG; | |
1264 | type = le16_to_cpu(hdr->frame_control) & IEEE80211_FCTL_FTYPE; | |
1265 | ||
1266 | if (status->flags & IEEE80211_TX_STATUS_ACK) { | |
1267 | if (frag == 0) { | |
1268 | local->dot11TransmittedFrameCount++; | |
1269 | if (is_multicast_ether_addr(hdr->addr1)) | |
1270 | local->dot11MulticastTransmittedFrameCount++; | |
1271 | if (status->retry_count > 0) | |
1272 | local->dot11RetryCount++; | |
1273 | if (status->retry_count > 1) | |
1274 | local->dot11MultipleRetryCount++; | |
1275 | } | |
1276 | ||
1277 | /* This counter shall be incremented for an acknowledged MPDU | |
1278 | * with an individual address in the address 1 field or an MPDU | |
1279 | * with a multicast address in the address 1 field of type Data | |
1280 | * or Management. */ | |
1281 | if (!is_multicast_ether_addr(hdr->addr1) || | |
1282 | type == IEEE80211_FTYPE_DATA || | |
1283 | type == IEEE80211_FTYPE_MGMT) | |
1284 | local->dot11TransmittedFragmentCount++; | |
1285 | } else { | |
1286 | if (frag == 0) | |
1287 | local->dot11FailedCount++; | |
1288 | } | |
1289 | ||
b306f453 JB |
1290 | /* this was a transmitted frame, but now we want to reuse it */ |
1291 | skb_orphan(skb); | |
1292 | ||
b306f453 | 1293 | if (!local->monitors) { |
f0706e82 JB |
1294 | dev_kfree_skb(skb); |
1295 | return; | |
1296 | } | |
1297 | ||
b306f453 | 1298 | /* send frame to monitor interfaces now */ |
f0706e82 | 1299 | |
b306f453 JB |
1300 | if (skb_headroom(skb) < sizeof(*rthdr)) { |
1301 | printk(KERN_ERR "ieee80211_tx_status: headroom too small\n"); | |
f0706e82 JB |
1302 | dev_kfree_skb(skb); |
1303 | return; | |
1304 | } | |
f0706e82 | 1305 | |
b306f453 JB |
1306 | rthdr = (struct ieee80211_tx_status_rtap_hdr*) |
1307 | skb_push(skb, sizeof(*rthdr)); | |
1308 | ||
1309 | memset(rthdr, 0, sizeof(*rthdr)); | |
1310 | rthdr->hdr.it_len = cpu_to_le16(sizeof(*rthdr)); | |
1311 | rthdr->hdr.it_present = | |
1312 | cpu_to_le32((1 << IEEE80211_RADIOTAP_TX_FLAGS) | | |
1313 | (1 << IEEE80211_RADIOTAP_DATA_RETRIES)); | |
1314 | ||
1315 | if (!(status->flags & IEEE80211_TX_STATUS_ACK) && | |
1316 | !is_multicast_ether_addr(hdr->addr1)) | |
1317 | rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_FAIL); | |
1318 | ||
1319 | if ((status->control.flags & IEEE80211_TXCTL_USE_RTS_CTS) && | |
1320 | (status->control.flags & IEEE80211_TXCTL_USE_CTS_PROTECT)) | |
1321 | rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_CTS); | |
1322 | else if (status->control.flags & IEEE80211_TXCTL_USE_RTS_CTS) | |
1323 | rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_RTS); | |
1324 | ||
1325 | rthdr->data_retries = status->retry_count; | |
1326 | ||
79010420 | 1327 | rcu_read_lock(); |
b306f453 | 1328 | monitors = local->monitors; |
79010420 | 1329 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
b306f453 JB |
1330 | /* |
1331 | * Using the monitors counter is possibly racy, but | |
1332 | * if the value is wrong we simply either clone the skb | |
1333 | * once too much or forget sending it to one monitor iface | |
1334 | * The latter case isn't nice but fixing the race is much | |
1335 | * more complicated. | |
1336 | */ | |
1337 | if (!monitors || !skb) | |
1338 | goto out; | |
1339 | ||
51fb61e7 | 1340 | if (sdata->vif.type == IEEE80211_IF_TYPE_MNTR) { |
b306f453 JB |
1341 | if (!netif_running(sdata->dev)) |
1342 | continue; | |
1343 | monitors--; | |
1344 | if (monitors) | |
79010420 | 1345 | skb2 = skb_clone(skb, GFP_ATOMIC); |
b306f453 JB |
1346 | else |
1347 | skb2 = NULL; | |
1348 | skb->dev = sdata->dev; | |
1349 | /* XXX: is this sufficient for BPF? */ | |
1350 | skb_set_mac_header(skb, 0); | |
1351 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
1352 | skb->pkt_type = PACKET_OTHERHOST; | |
1353 | skb->protocol = htons(ETH_P_802_2); | |
1354 | memset(skb->cb, 0, sizeof(skb->cb)); | |
1355 | netif_rx(skb); | |
1356 | skb = skb2; | |
b306f453 JB |
1357 | } |
1358 | } | |
1359 | out: | |
79010420 | 1360 | rcu_read_unlock(); |
b306f453 JB |
1361 | if (skb) |
1362 | dev_kfree_skb(skb); | |
f0706e82 JB |
1363 | } |
1364 | EXPORT_SYMBOL(ieee80211_tx_status); | |
1365 | ||
f0706e82 JB |
1366 | struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len, |
1367 | const struct ieee80211_ops *ops) | |
1368 | { | |
1369 | struct net_device *mdev; | |
1370 | struct ieee80211_local *local; | |
1371 | struct ieee80211_sub_if_data *sdata; | |
1372 | int priv_size; | |
1373 | struct wiphy *wiphy; | |
1374 | ||
1375 | /* Ensure 32-byte alignment of our private data and hw private data. | |
1376 | * We use the wiphy priv data for both our ieee80211_local and for | |
1377 | * the driver's private data | |
1378 | * | |
1379 | * In memory it'll be like this: | |
1380 | * | |
1381 | * +-------------------------+ | |
1382 | * | struct wiphy | | |
1383 | * +-------------------------+ | |
1384 | * | struct ieee80211_local | | |
1385 | * +-------------------------+ | |
1386 | * | driver's private data | | |
1387 | * +-------------------------+ | |
1388 | * | |
1389 | */ | |
1390 | priv_size = ((sizeof(struct ieee80211_local) + | |
1391 | NETDEV_ALIGN_CONST) & ~NETDEV_ALIGN_CONST) + | |
1392 | priv_data_len; | |
1393 | ||
1394 | wiphy = wiphy_new(&mac80211_config_ops, priv_size); | |
1395 | ||
1396 | if (!wiphy) | |
1397 | return NULL; | |
1398 | ||
1399 | wiphy->privid = mac80211_wiphy_privid; | |
1400 | ||
1401 | local = wiphy_priv(wiphy); | |
1402 | local->hw.wiphy = wiphy; | |
1403 | ||
1404 | local->hw.priv = (char *)local + | |
1405 | ((sizeof(struct ieee80211_local) + | |
1406 | NETDEV_ALIGN_CONST) & ~NETDEV_ALIGN_CONST); | |
1407 | ||
4480f15c | 1408 | BUG_ON(!ops->tx); |
4150c572 JB |
1409 | BUG_ON(!ops->start); |
1410 | BUG_ON(!ops->stop); | |
4480f15c JB |
1411 | BUG_ON(!ops->config); |
1412 | BUG_ON(!ops->add_interface); | |
4150c572 JB |
1413 | BUG_ON(!ops->remove_interface); |
1414 | BUG_ON(!ops->configure_filter); | |
f0706e82 JB |
1415 | local->ops = ops; |
1416 | ||
1417 | /* for now, mdev needs sub_if_data :/ */ | |
1418 | mdev = alloc_netdev(sizeof(struct ieee80211_sub_if_data), | |
1419 | "wmaster%d", ether_setup); | |
1420 | if (!mdev) { | |
1421 | wiphy_free(wiphy); | |
1422 | return NULL; | |
1423 | } | |
1424 | ||
1425 | sdata = IEEE80211_DEV_TO_SUB_IF(mdev); | |
1426 | mdev->ieee80211_ptr = &sdata->wdev; | |
1427 | sdata->wdev.wiphy = wiphy; | |
1428 | ||
1429 | local->hw.queues = 1; /* default */ | |
1430 | ||
1431 | local->mdev = mdev; | |
f0706e82 JB |
1432 | |
1433 | local->bridge_packets = 1; | |
1434 | ||
1435 | local->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD; | |
1436 | local->fragmentation_threshold = IEEE80211_MAX_FRAG_THRESHOLD; | |
1437 | local->short_retry_limit = 7; | |
1438 | local->long_retry_limit = 4; | |
1439 | local->hw.conf.radio_enabled = 1; | |
f0706e82 | 1440 | |
79010420 | 1441 | INIT_LIST_HEAD(&local->interfaces); |
f0706e82 JB |
1442 | |
1443 | INIT_DELAYED_WORK(&local->scan_work, ieee80211_sta_scan_work); | |
f0706e82 JB |
1444 | ieee80211_rx_bss_list_init(mdev); |
1445 | ||
1446 | sta_info_init(local); | |
1447 | ||
1448 | mdev->hard_start_xmit = ieee80211_master_start_xmit; | |
1449 | mdev->open = ieee80211_master_open; | |
1450 | mdev->stop = ieee80211_master_stop; | |
1451 | mdev->type = ARPHRD_IEEE80211; | |
3b04ddde | 1452 | mdev->header_ops = &ieee80211_header_ops; |
4150c572 | 1453 | mdev->set_multicast_list = ieee80211_master_set_multicast_list; |
f0706e82 | 1454 | |
51fb61e7 | 1455 | sdata->vif.type = IEEE80211_IF_TYPE_AP; |
f0706e82 JB |
1456 | sdata->dev = mdev; |
1457 | sdata->local = local; | |
1458 | sdata->u.ap.force_unicast_rateidx = -1; | |
1459 | sdata->u.ap.max_ratectrl_rateidx = -1; | |
1460 | ieee80211_if_sdata_init(sdata); | |
79010420 JB |
1461 | /* no RCU needed since we're still during init phase */ |
1462 | list_add_tail(&sdata->list, &local->interfaces); | |
f0706e82 JB |
1463 | |
1464 | tasklet_init(&local->tx_pending_tasklet, ieee80211_tx_pending, | |
1465 | (unsigned long)local); | |
1466 | tasklet_disable(&local->tx_pending_tasklet); | |
1467 | ||
1468 | tasklet_init(&local->tasklet, | |
1469 | ieee80211_tasklet_handler, | |
1470 | (unsigned long) local); | |
1471 | tasklet_disable(&local->tasklet); | |
1472 | ||
1473 | skb_queue_head_init(&local->skb_queue); | |
1474 | skb_queue_head_init(&local->skb_queue_unreliable); | |
1475 | ||
1476 | return local_to_hw(local); | |
1477 | } | |
1478 | EXPORT_SYMBOL(ieee80211_alloc_hw); | |
1479 | ||
1480 | int ieee80211_register_hw(struct ieee80211_hw *hw) | |
1481 | { | |
1482 | struct ieee80211_local *local = hw_to_local(hw); | |
1483 | const char *name; | |
1484 | int result; | |
8318d78a JB |
1485 | enum ieee80211_band band; |
1486 | ||
1487 | /* | |
1488 | * generic code guarantees at least one band, | |
1489 | * set this very early because much code assumes | |
1490 | * that hw.conf.channel is assigned | |
1491 | */ | |
1492 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { | |
1493 | struct ieee80211_supported_band *sband; | |
1494 | ||
1495 | sband = local->hw.wiphy->bands[band]; | |
1496 | if (sband) { | |
1497 | /* init channel we're on */ | |
1498 | local->hw.conf.channel = | |
1499 | local->oper_channel = | |
1500 | local->scan_channel = &sband->channels[0]; | |
1501 | break; | |
1502 | } | |
1503 | } | |
f0706e82 JB |
1504 | |
1505 | result = wiphy_register(local->hw.wiphy); | |
1506 | if (result < 0) | |
1507 | return result; | |
1508 | ||
1509 | name = wiphy_dev(local->hw.wiphy)->driver->name; | |
1510 | local->hw.workqueue = create_singlethread_workqueue(name); | |
1511 | if (!local->hw.workqueue) { | |
1512 | result = -ENOMEM; | |
1513 | goto fail_workqueue; | |
1514 | } | |
1515 | ||
b306f453 JB |
1516 | /* |
1517 | * The hardware needs headroom for sending the frame, | |
1518 | * and we need some headroom for passing the frame to monitor | |
1519 | * interfaces, but never both at the same time. | |
1520 | */ | |
33ccad35 JB |
1521 | local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom, |
1522 | sizeof(struct ieee80211_tx_status_rtap_hdr)); | |
b306f453 | 1523 | |
e9f207f0 JB |
1524 | debugfs_hw_add(local); |
1525 | ||
f0706e82 JB |
1526 | local->hw.conf.beacon_int = 1000; |
1527 | ||
1528 | local->wstats_flags |= local->hw.max_rssi ? | |
1529 | IW_QUAL_LEVEL_UPDATED : IW_QUAL_LEVEL_INVALID; | |
1530 | local->wstats_flags |= local->hw.max_signal ? | |
1531 | IW_QUAL_QUAL_UPDATED : IW_QUAL_QUAL_INVALID; | |
1532 | local->wstats_flags |= local->hw.max_noise ? | |
1533 | IW_QUAL_NOISE_UPDATED : IW_QUAL_NOISE_INVALID; | |
1534 | if (local->hw.max_rssi < 0 || local->hw.max_noise < 0) | |
1535 | local->wstats_flags |= IW_QUAL_DBM; | |
1536 | ||
1537 | result = sta_info_start(local); | |
1538 | if (result < 0) | |
1539 | goto fail_sta_info; | |
1540 | ||
1541 | rtnl_lock(); | |
1542 | result = dev_alloc_name(local->mdev, local->mdev->name); | |
1543 | if (result < 0) | |
1544 | goto fail_dev; | |
1545 | ||
1546 | memcpy(local->mdev->dev_addr, local->hw.wiphy->perm_addr, ETH_ALEN); | |
1547 | SET_NETDEV_DEV(local->mdev, wiphy_dev(local->hw.wiphy)); | |
1548 | ||
1549 | result = register_netdevice(local->mdev); | |
1550 | if (result < 0) | |
1551 | goto fail_dev; | |
1552 | ||
e9f207f0 | 1553 | ieee80211_debugfs_add_netdev(IEEE80211_DEV_TO_SUB_IF(local->mdev)); |
5b2812e9 | 1554 | ieee80211_if_set_type(local->mdev, IEEE80211_IF_TYPE_AP); |
e9f207f0 | 1555 | |
830f9038 JB |
1556 | result = ieee80211_init_rate_ctrl_alg(local, |
1557 | hw->rate_control_algorithm); | |
f0706e82 JB |
1558 | if (result < 0) { |
1559 | printk(KERN_DEBUG "%s: Failed to initialize rate control " | |
dd1cd4c6 | 1560 | "algorithm\n", wiphy_name(local->hw.wiphy)); |
f0706e82 JB |
1561 | goto fail_rate; |
1562 | } | |
1563 | ||
1564 | result = ieee80211_wep_init(local); | |
1565 | ||
1566 | if (result < 0) { | |
1567 | printk(KERN_DEBUG "%s: Failed to initialize wep\n", | |
dd1cd4c6 | 1568 | wiphy_name(local->hw.wiphy)); |
f0706e82 JB |
1569 | goto fail_wep; |
1570 | } | |
1571 | ||
1572 | ieee80211_install_qdisc(local->mdev); | |
1573 | ||
1574 | /* add one default STA interface */ | |
1575 | result = ieee80211_if_add(local->mdev, "wlan%d", NULL, | |
1576 | IEEE80211_IF_TYPE_STA); | |
1577 | if (result) | |
1578 | printk(KERN_WARNING "%s: Failed to add default virtual iface\n", | |
dd1cd4c6 | 1579 | wiphy_name(local->hw.wiphy)); |
f0706e82 JB |
1580 | |
1581 | local->reg_state = IEEE80211_DEV_REGISTERED; | |
1582 | rtnl_unlock(); | |
1583 | ||
1584 | ieee80211_led_init(local); | |
1585 | ||
1586 | return 0; | |
1587 | ||
1588 | fail_wep: | |
1589 | rate_control_deinitialize(local); | |
1590 | fail_rate: | |
e9f207f0 | 1591 | ieee80211_debugfs_remove_netdev(IEEE80211_DEV_TO_SUB_IF(local->mdev)); |
f0706e82 JB |
1592 | unregister_netdevice(local->mdev); |
1593 | fail_dev: | |
1594 | rtnl_unlock(); | |
1595 | sta_info_stop(local); | |
1596 | fail_sta_info: | |
e9f207f0 | 1597 | debugfs_hw_del(local); |
f0706e82 JB |
1598 | destroy_workqueue(local->hw.workqueue); |
1599 | fail_workqueue: | |
1600 | wiphy_unregister(local->hw.wiphy); | |
1601 | return result; | |
1602 | } | |
1603 | EXPORT_SYMBOL(ieee80211_register_hw); | |
1604 | ||
f0706e82 JB |
1605 | void ieee80211_unregister_hw(struct ieee80211_hw *hw) |
1606 | { | |
1607 | struct ieee80211_local *local = hw_to_local(hw); | |
1608 | struct ieee80211_sub_if_data *sdata, *tmp; | |
f0706e82 JB |
1609 | |
1610 | tasklet_kill(&local->tx_pending_tasklet); | |
1611 | tasklet_kill(&local->tasklet); | |
1612 | ||
1613 | rtnl_lock(); | |
1614 | ||
1615 | BUG_ON(local->reg_state != IEEE80211_DEV_REGISTERED); | |
1616 | ||
1617 | local->reg_state = IEEE80211_DEV_UNREGISTERED; | |
f0706e82 | 1618 | |
79010420 JB |
1619 | /* |
1620 | * At this point, interface list manipulations are fine | |
1621 | * because the driver cannot be handing us frames any | |
1622 | * more and the tasklet is killed. | |
1623 | */ | |
5b2812e9 JB |
1624 | |
1625 | /* | |
1626 | * First, we remove all non-master interfaces. Do this because they | |
1627 | * may have bss pointer dependency on the master, and when we free | |
1628 | * the master these would be freed as well, breaking our list | |
1629 | * iteration completely. | |
1630 | */ | |
1631 | list_for_each_entry_safe(sdata, tmp, &local->interfaces, list) { | |
1632 | if (sdata->dev == local->mdev) | |
1633 | continue; | |
1634 | list_del(&sdata->list); | |
f0706e82 | 1635 | __ieee80211_if_del(local, sdata); |
5b2812e9 JB |
1636 | } |
1637 | ||
1638 | /* then, finally, remove the master interface */ | |
1639 | __ieee80211_if_del(local, IEEE80211_DEV_TO_SUB_IF(local->mdev)); | |
f0706e82 JB |
1640 | |
1641 | rtnl_unlock(); | |
1642 | ||
f0706e82 JB |
1643 | ieee80211_rx_bss_list_deinit(local->mdev); |
1644 | ieee80211_clear_tx_pending(local); | |
1645 | sta_info_stop(local); | |
1646 | rate_control_deinitialize(local); | |
e9f207f0 | 1647 | debugfs_hw_del(local); |
f0706e82 | 1648 | |
f0706e82 JB |
1649 | if (skb_queue_len(&local->skb_queue) |
1650 | || skb_queue_len(&local->skb_queue_unreliable)) | |
1651 | printk(KERN_WARNING "%s: skb_queue not empty\n", | |
dd1cd4c6 | 1652 | wiphy_name(local->hw.wiphy)); |
f0706e82 JB |
1653 | skb_queue_purge(&local->skb_queue); |
1654 | skb_queue_purge(&local->skb_queue_unreliable); | |
1655 | ||
1656 | destroy_workqueue(local->hw.workqueue); | |
1657 | wiphy_unregister(local->hw.wiphy); | |
1658 | ieee80211_wep_free(local); | |
1659 | ieee80211_led_exit(local); | |
1660 | } | |
1661 | EXPORT_SYMBOL(ieee80211_unregister_hw); | |
1662 | ||
1663 | void ieee80211_free_hw(struct ieee80211_hw *hw) | |
1664 | { | |
1665 | struct ieee80211_local *local = hw_to_local(hw); | |
1666 | ||
1667 | ieee80211_if_free(local->mdev); | |
1668 | wiphy_free(local->hw.wiphy); | |
1669 | } | |
1670 | EXPORT_SYMBOL(ieee80211_free_hw); | |
1671 | ||
f0706e82 JB |
1672 | static int __init ieee80211_init(void) |
1673 | { | |
1674 | struct sk_buff *skb; | |
1675 | int ret; | |
1676 | ||
1677 | BUILD_BUG_ON(sizeof(struct ieee80211_tx_packet_data) > sizeof(skb->cb)); | |
1678 | ||
4b475898 | 1679 | ret = rc80211_simple_init(); |
ac71c691 | 1680 | if (ret) |
3eadf5f4 | 1681 | goto out; |
ad018375 | 1682 | |
4b475898 | 1683 | ret = rc80211_pid_init(); |
ad018375 | 1684 | if (ret) |
3eadf5f4 | 1685 | goto out_cleanup_simple; |
ac71c691 | 1686 | |
f0706e82 JB |
1687 | ret = ieee80211_wme_register(); |
1688 | if (ret) { | |
1689 | printk(KERN_DEBUG "ieee80211_init: failed to " | |
1690 | "initialize WME (err=%d)\n", ret); | |
3eadf5f4 | 1691 | goto out_cleanup_pid; |
f0706e82 JB |
1692 | } |
1693 | ||
e9f207f0 JB |
1694 | ieee80211_debugfs_netdev_init(); |
1695 | ||
f0706e82 | 1696 | return 0; |
ad018375 | 1697 | |
3eadf5f4 | 1698 | out_cleanup_pid: |
4b475898 | 1699 | rc80211_pid_exit(); |
3eadf5f4 JB |
1700 | out_cleanup_simple: |
1701 | rc80211_simple_exit(); | |
1702 | out: | |
ad018375 | 1703 | return ret; |
f0706e82 JB |
1704 | } |
1705 | ||
f0706e82 JB |
1706 | static void __exit ieee80211_exit(void) |
1707 | { | |
4b475898 JB |
1708 | rc80211_simple_exit(); |
1709 | rc80211_pid_exit(); | |
ac71c691 | 1710 | |
f0706e82 | 1711 | ieee80211_wme_unregister(); |
e9f207f0 | 1712 | ieee80211_debugfs_netdev_exit(); |
f0706e82 JB |
1713 | } |
1714 | ||
1715 | ||
ca9938fe | 1716 | subsys_initcall(ieee80211_init); |
f0706e82 JB |
1717 | module_exit(ieee80211_exit); |
1718 | ||
1719 | MODULE_DESCRIPTION("IEEE 802.11 subsystem"); | |
1720 | MODULE_LICENSE("GPL"); |