Commit | Line | Data |
---|---|---|
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 | 241 | case IEEE80211_IF_TYPE_MNTR: |
3d30d949 MW |
242 | if (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES) { |
243 | local->cooked_mntrs++; | |
244 | break; | |
245 | } | |
246 | ||
4150c572 | 247 | /* must be before the call to ieee80211_configure_filter */ |
b2c258fb | 248 | local->monitors++; |
8cc9a739 | 249 | if (local->monitors == 1) |
4150c572 | 250 | local->hw.conf.flags |= IEEE80211_CONF_RADIOTAP; |
8cc9a739 MW |
251 | |
252 | if (sdata->u.mntr_flags & MONITOR_FLAG_FCSFAIL) | |
253 | local->fif_fcsfail++; | |
254 | if (sdata->u.mntr_flags & MONITOR_FLAG_PLCPFAIL) | |
255 | local->fif_plcpfail++; | |
256 | if (sdata->u.mntr_flags & MONITOR_FLAG_CONTROL) | |
257 | local->fif_control++; | |
258 | if (sdata->u.mntr_flags & MONITOR_FLAG_OTHER_BSS) | |
259 | local->fif_other_bss++; | |
260 | ||
261 | netif_tx_lock_bh(local->mdev); | |
262 | ieee80211_configure_filter(local); | |
263 | netif_tx_unlock_bh(local->mdev); | |
4150c572 JB |
264 | break; |
265 | case IEEE80211_IF_TYPE_STA: | |
266 | case IEEE80211_IF_TYPE_IBSS: | |
267 | sdata->u.sta.flags &= ~IEEE80211_STA_PREV_BSSID_SET; | |
268 | /* fall through */ | |
269 | default: | |
32bfd35d | 270 | conf.vif = &sdata->vif; |
51fb61e7 | 271 | conf.type = sdata->vif.type; |
4150c572 JB |
272 | conf.mac_addr = dev->dev_addr; |
273 | res = local->ops->add_interface(local_to_hw(local), &conf); | |
274 | if (res && !local->open_count && local->ops->stop) | |
275 | local->ops->stop(local_to_hw(local)); | |
276 | if (res) | |
277 | return res; | |
278 | ||
b2c258fb | 279 | ieee80211_if_config(dev); |
d9430a32 | 280 | ieee80211_reset_erp_info(dev); |
11a843b7 | 281 | ieee80211_enable_keys(sdata); |
4150c572 | 282 | |
51fb61e7 | 283 | if (sdata->vif.type == IEEE80211_IF_TYPE_STA && |
ddd3d2be | 284 | !(sdata->flags & IEEE80211_SDATA_USERSPACE_MLME)) |
4150c572 JB |
285 | netif_carrier_off(dev); |
286 | else | |
287 | netif_carrier_on(dev); | |
d9430a32 | 288 | } |
f0706e82 | 289 | |
4150c572 JB |
290 | if (local->open_count == 0) { |
291 | res = dev_open(local->mdev); | |
292 | WARN_ON(res); | |
4150c572 JB |
293 | tasklet_enable(&local->tx_pending_tasklet); |
294 | tasklet_enable(&local->tasklet); | |
295 | } | |
296 | ||
c1428b3f JB |
297 | /* |
298 | * set_multicast_list will be invoked by the networking core | |
299 | * which will check whether any increments here were done in | |
300 | * error and sync them down to the hardware as filter flags. | |
301 | */ | |
302 | if (sdata->flags & IEEE80211_SDATA_ALLMULTI) | |
303 | atomic_inc(&local->iff_allmultis); | |
304 | ||
305 | if (sdata->flags & IEEE80211_SDATA_PROMISC) | |
306 | atomic_inc(&local->iff_promiscs); | |
307 | ||
4150c572 | 308 | local->open_count++; |
ceffefd1 MB |
309 | if (need_hw_reconfig) |
310 | ieee80211_hw_config(local); | |
f0706e82 | 311 | |
b2c258fb | 312 | netif_start_queue(dev); |
4150c572 | 313 | |
b2c258fb | 314 | return 0; |
f0706e82 | 315 | } |
f0706e82 | 316 | |
4150c572 | 317 | static int ieee80211_stop(struct net_device *dev) |
f0706e82 | 318 | { |
4150c572 | 319 | struct ieee80211_sub_if_data *sdata; |
f0706e82 | 320 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); |
4150c572 | 321 | struct ieee80211_if_init_conf conf; |
07db2183 RR |
322 | struct sta_info *sta; |
323 | int i; | |
4150c572 JB |
324 | |
325 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
326 | ||
07db2183 | 327 | list_for_each_entry(sta, &local->sta_list, list) { |
5b3d71d9 RR |
328 | if (sta->dev == dev) |
329 | for (i = 0; i < STA_TID_NUM; i++) | |
330 | ieee80211_sta_stop_rx_ba_session(sta->dev, | |
331 | sta->addr, i, | |
332 | WLAN_BACK_RECIPIENT, | |
07db2183 RR |
333 | WLAN_REASON_QSTA_LEAVE_QBSS); |
334 | } | |
335 | ||
4150c572 JB |
336 | netif_stop_queue(dev); |
337 | ||
c1428b3f JB |
338 | /* |
339 | * Don't count this interface for promisc/allmulti while it | |
340 | * is down. dev_mc_unsync() will invoke set_multicast_list | |
341 | * on the master interface which will sync these down to the | |
342 | * hardware as filter flags. | |
343 | */ | |
344 | if (sdata->flags & IEEE80211_SDATA_ALLMULTI) | |
345 | atomic_dec(&local->iff_allmultis); | |
346 | ||
347 | if (sdata->flags & IEEE80211_SDATA_PROMISC) | |
348 | atomic_dec(&local->iff_promiscs); | |
349 | ||
4150c572 JB |
350 | dev_mc_unsync(local->mdev, dev); |
351 | ||
5dfdaf58 | 352 | /* APs need special treatment */ |
51fb61e7 | 353 | if (sdata->vif.type == IEEE80211_IF_TYPE_AP) { |
0ec3ca44 | 354 | struct ieee80211_sub_if_data *vlan, *tmp; |
5dfdaf58 | 355 | struct beacon_data *old_beacon = sdata->u.ap.beacon; |
0ec3ca44 | 356 | |
5dfdaf58 JB |
357 | /* remove beacon */ |
358 | rcu_assign_pointer(sdata->u.ap.beacon, NULL); | |
359 | synchronize_rcu(); | |
360 | kfree(old_beacon); | |
361 | ||
362 | /* down all dependent devices, that is VLANs */ | |
0ec3ca44 JB |
363 | list_for_each_entry_safe(vlan, tmp, &sdata->u.ap.vlans, |
364 | u.vlan.list) | |
365 | dev_close(vlan->dev); | |
366 | WARN_ON(!list_empty(&sdata->u.ap.vlans)); | |
367 | } | |
368 | ||
4150c572 | 369 | local->open_count--; |
f0706e82 | 370 | |
51fb61e7 | 371 | switch (sdata->vif.type) { |
0ec3ca44 JB |
372 | case IEEE80211_IF_TYPE_VLAN: |
373 | list_del(&sdata->u.vlan.list); | |
374 | sdata->u.vlan.ap = NULL; | |
375 | /* no need to tell driver */ | |
376 | break; | |
4150c572 | 377 | case IEEE80211_IF_TYPE_MNTR: |
3d30d949 MW |
378 | if (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES) { |
379 | local->cooked_mntrs--; | |
380 | break; | |
381 | } | |
382 | ||
4150c572 | 383 | local->monitors--; |
8cc9a739 | 384 | if (local->monitors == 0) |
8b393f1d | 385 | local->hw.conf.flags &= ~IEEE80211_CONF_RADIOTAP; |
8cc9a739 MW |
386 | |
387 | if (sdata->u.mntr_flags & MONITOR_FLAG_FCSFAIL) | |
388 | local->fif_fcsfail--; | |
389 | if (sdata->u.mntr_flags & MONITOR_FLAG_PLCPFAIL) | |
390 | local->fif_plcpfail--; | |
391 | if (sdata->u.mntr_flags & MONITOR_FLAG_CONTROL) | |
392 | local->fif_control--; | |
393 | if (sdata->u.mntr_flags & MONITOR_FLAG_OTHER_BSS) | |
394 | local->fif_other_bss--; | |
395 | ||
396 | netif_tx_lock_bh(local->mdev); | |
397 | ieee80211_configure_filter(local); | |
398 | netif_tx_unlock_bh(local->mdev); | |
4150c572 | 399 | break; |
b2c258fb JB |
400 | case IEEE80211_IF_TYPE_STA: |
401 | case IEEE80211_IF_TYPE_IBSS: | |
402 | sdata->u.sta.state = IEEE80211_DISABLED; | |
403 | del_timer_sync(&sdata->u.sta.timer); | |
2a8a9a88 | 404 | /* |
79010420 JB |
405 | * When we get here, the interface is marked down. |
406 | * Call synchronize_rcu() to wait for the RX path | |
407 | * should it be using the interface and enqueuing | |
408 | * frames at this very time on another CPU. | |
2a8a9a88 | 409 | */ |
79010420 | 410 | synchronize_rcu(); |
b2c258fb | 411 | skb_queue_purge(&sdata->u.sta.skb_queue); |
2a8a9a88 | 412 | |
ece8eddd ZY |
413 | if (local->scan_dev == sdata->dev) { |
414 | if (!local->ops->hw_scan) { | |
415 | local->sta_sw_scanning = 0; | |
416 | cancel_delayed_work(&local->scan_work); | |
417 | } else | |
418 | local->sta_hw_scanning = 0; | |
b2c258fb | 419 | } |
ece8eddd | 420 | |
b2c258fb | 421 | flush_workqueue(local->hw.workqueue); |
a10605e5 ZY |
422 | |
423 | sdata->u.sta.flags &= ~IEEE80211_STA_PRIVACY_INVOKED; | |
424 | kfree(sdata->u.sta.extra_ie); | |
425 | sdata->u.sta.extra_ie = NULL; | |
426 | sdata->u.sta.extra_ie_len = 0; | |
4150c572 JB |
427 | /* fall through */ |
428 | default: | |
32bfd35d | 429 | conf.vif = &sdata->vif; |
51fb61e7 | 430 | conf.type = sdata->vif.type; |
4150c572 | 431 | conf.mac_addr = dev->dev_addr; |
11a843b7 JB |
432 | /* disable all keys for as long as this netdev is down */ |
433 | ieee80211_disable_keys(sdata); | |
4150c572 | 434 | local->ops->remove_interface(local_to_hw(local), &conf); |
f0706e82 JB |
435 | } |
436 | ||
b2c258fb JB |
437 | if (local->open_count == 0) { |
438 | if (netif_running(local->mdev)) | |
439 | dev_close(local->mdev); | |
4150c572 | 440 | |
b2c258fb JB |
441 | if (local->ops->stop) |
442 | local->ops->stop(local_to_hw(local)); | |
4150c572 | 443 | |
cdcb006f ID |
444 | ieee80211_led_radio(local, 0); |
445 | ||
b2c258fb JB |
446 | tasklet_disable(&local->tx_pending_tasklet); |
447 | tasklet_disable(&local->tasklet); | |
448 | } | |
b2c258fb | 449 | |
f0706e82 JB |
450 | return 0; |
451 | } | |
452 | ||
eadc8d9e RR |
453 | int ieee80211_start_tx_ba_session(struct ieee80211_hw *hw, u8 *ra, u16 tid) |
454 | { | |
455 | struct ieee80211_local *local = hw_to_local(hw); | |
456 | struct sta_info *sta; | |
457 | struct ieee80211_sub_if_data *sdata; | |
458 | u16 start_seq_num = 0; | |
459 | u8 *state; | |
460 | int ret; | |
461 | DECLARE_MAC_BUF(mac); | |
462 | ||
463 | if (tid >= STA_TID_NUM) | |
464 | return -EINVAL; | |
465 | ||
466 | #ifdef CONFIG_MAC80211_HT_DEBUG | |
467 | printk(KERN_DEBUG "Open BA session requested for %s tid %u\n", | |
468 | print_mac(mac, ra), tid); | |
469 | #endif /* CONFIG_MAC80211_HT_DEBUG */ | |
470 | ||
471 | sta = sta_info_get(local, ra); | |
472 | if (!sta) { | |
473 | printk(KERN_DEBUG "Could not find the station\n"); | |
474 | return -ENOENT; | |
475 | } | |
476 | ||
477 | spin_lock_bh(&sta->ampdu_mlme.ampdu_tx); | |
478 | ||
479 | /* we have tried too many times, receiver does not want A-MPDU */ | |
480 | if (sta->ampdu_mlme.tid_tx[tid].addba_req_num > HT_AGG_MAX_RETRIES) { | |
481 | ret = -EBUSY; | |
482 | goto start_ba_exit; | |
483 | } | |
484 | ||
485 | state = &sta->ampdu_mlme.tid_tx[tid].state; | |
486 | /* check if the TID is not in aggregation flow already */ | |
487 | if (*state != HT_AGG_STATE_IDLE) { | |
488 | #ifdef CONFIG_MAC80211_HT_DEBUG | |
489 | printk(KERN_DEBUG "BA request denied - session is not " | |
490 | "idle on tid %u\n", tid); | |
491 | #endif /* CONFIG_MAC80211_HT_DEBUG */ | |
492 | ret = -EAGAIN; | |
493 | goto start_ba_exit; | |
494 | } | |
495 | ||
496 | /* ensure that TX flow won't interrupt us | |
497 | * until the end of the call to requeue function */ | |
498 | spin_lock_bh(&local->mdev->queue_lock); | |
499 | ||
500 | /* create a new queue for this aggregation */ | |
9e723492 | 501 | ret = ieee80211_ht_agg_queue_add(local, sta, tid); |
eadc8d9e RR |
502 | |
503 | /* case no queue is available to aggregation | |
504 | * don't switch to aggregation */ | |
505 | if (ret) { | |
506 | #ifdef CONFIG_MAC80211_HT_DEBUG | |
507 | printk(KERN_DEBUG "BA request denied - no queue available for" | |
508 | " tid %d\n", tid); | |
509 | #endif /* CONFIG_MAC80211_HT_DEBUG */ | |
510 | spin_unlock_bh(&local->mdev->queue_lock); | |
511 | goto start_ba_exit; | |
512 | } | |
513 | sdata = IEEE80211_DEV_TO_SUB_IF(sta->dev); | |
514 | ||
515 | /* Ok, the Addba frame hasn't been sent yet, but if the driver calls the | |
516 | * call back right away, it must see that the flow has begun */ | |
517 | *state |= HT_ADDBA_REQUESTED_MSK; | |
518 | ||
519 | if (local->ops->ampdu_action) | |
520 | ret = local->ops->ampdu_action(hw, IEEE80211_AMPDU_TX_START, | |
521 | ra, tid, &start_seq_num); | |
522 | ||
523 | if (ret) { | |
524 | /* No need to requeue the packets in the agg queue, since we | |
525 | * held the tx lock: no packet could be enqueued to the newly | |
526 | * allocated queue */ | |
9e723492 | 527 | ieee80211_ht_agg_queue_remove(local, sta, tid, 0); |
eadc8d9e RR |
528 | #ifdef CONFIG_MAC80211_HT_DEBUG |
529 | printk(KERN_DEBUG "BA request denied - HW or queue unavailable" | |
530 | " for tid %d\n", tid); | |
531 | #endif /* CONFIG_MAC80211_HT_DEBUG */ | |
532 | spin_unlock_bh(&local->mdev->queue_lock); | |
533 | *state = HT_AGG_STATE_IDLE; | |
534 | goto start_ba_exit; | |
535 | } | |
536 | ||
537 | /* Will put all the packets in the new SW queue */ | |
9e723492 | 538 | ieee80211_requeue(local, ieee802_1d_to_ac[tid]); |
eadc8d9e RR |
539 | spin_unlock_bh(&local->mdev->queue_lock); |
540 | ||
541 | /* We have most probably almost emptied the legacy queue */ | |
542 | /* ieee80211_wake_queue(local_to_hw(local), ieee802_1d_to_ac[tid]); */ | |
543 | ||
544 | /* send an addBA request */ | |
545 | sta->ampdu_mlme.dialog_token_allocator++; | |
546 | sta->ampdu_mlme.tid_tx[tid].dialog_token = | |
547 | sta->ampdu_mlme.dialog_token_allocator; | |
548 | sta->ampdu_mlme.tid_tx[tid].ssn = start_seq_num; | |
549 | ||
550 | ieee80211_send_addba_request(sta->dev, ra, tid, | |
551 | sta->ampdu_mlme.tid_tx[tid].dialog_token, | |
552 | sta->ampdu_mlme.tid_tx[tid].ssn, | |
553 | 0x40, 5000); | |
554 | ||
555 | /* activate the timer for the recipient's addBA response */ | |
556 | sta->ampdu_mlme.tid_tx[tid].addba_resp_timer.expires = | |
557 | jiffies + ADDBA_RESP_INTERVAL; | |
558 | add_timer(&sta->ampdu_mlme.tid_tx[tid].addba_resp_timer); | |
559 | printk(KERN_DEBUG "activated addBA response timer on tid %d\n", tid); | |
560 | ||
561 | start_ba_exit: | |
562 | spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx); | |
563 | sta_info_put(sta); | |
564 | return ret; | |
565 | } | |
566 | EXPORT_SYMBOL(ieee80211_start_tx_ba_session); | |
567 | ||
568 | int ieee80211_stop_tx_ba_session(struct ieee80211_hw *hw, | |
569 | u8 *ra, u16 tid, | |
570 | enum ieee80211_back_parties initiator) | |
571 | { | |
572 | struct ieee80211_local *local = hw_to_local(hw); | |
573 | struct sta_info *sta; | |
574 | u8 *state; | |
575 | int ret = 0; | |
576 | DECLARE_MAC_BUF(mac); | |
577 | ||
578 | if (tid >= STA_TID_NUM) | |
579 | return -EINVAL; | |
580 | ||
581 | #ifdef CONFIG_MAC80211_HT_DEBUG | |
582 | printk(KERN_DEBUG "Stop a BA session requested for %s tid %u\n", | |
583 | print_mac(mac, ra), tid); | |
584 | #endif /* CONFIG_MAC80211_HT_DEBUG */ | |
585 | ||
586 | sta = sta_info_get(local, ra); | |
587 | if (!sta) | |
588 | return -ENOENT; | |
589 | ||
590 | /* check if the TID is in aggregation */ | |
591 | state = &sta->ampdu_mlme.tid_tx[tid].state; | |
592 | spin_lock_bh(&sta->ampdu_mlme.ampdu_tx); | |
593 | ||
594 | if (*state != HT_AGG_STATE_OPERATIONAL) { | |
595 | #ifdef CONFIG_MAC80211_HT_DEBUG | |
596 | printk(KERN_DEBUG "Try to stop Tx aggregation on" | |
597 | " non active TID\n"); | |
598 | #endif /* CONFIG_MAC80211_HT_DEBUG */ | |
599 | ret = -ENOENT; | |
600 | goto stop_BA_exit; | |
601 | } | |
602 | ||
603 | ieee80211_stop_queue(hw, sta->tid_to_tx_q[tid]); | |
604 | ||
605 | *state = HT_AGG_STATE_REQ_STOP_BA_MSK | | |
606 | (initiator << HT_AGG_STATE_INITIATOR_SHIFT); | |
607 | ||
608 | if (local->ops->ampdu_action) | |
609 | ret = local->ops->ampdu_action(hw, IEEE80211_AMPDU_TX_STOP, | |
610 | ra, tid, NULL); | |
611 | ||
612 | /* case HW denied going back to legacy */ | |
613 | if (ret) { | |
614 | WARN_ON(ret != -EBUSY); | |
615 | *state = HT_AGG_STATE_OPERATIONAL; | |
616 | ieee80211_wake_queue(hw, sta->tid_to_tx_q[tid]); | |
617 | goto stop_BA_exit; | |
618 | } | |
619 | ||
620 | stop_BA_exit: | |
621 | spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx); | |
622 | sta_info_put(sta); | |
623 | return ret; | |
624 | } | |
625 | EXPORT_SYMBOL(ieee80211_stop_tx_ba_session); | |
626 | ||
627 | void ieee80211_start_tx_ba_cb(struct ieee80211_hw *hw, u8 *ra, u16 tid) | |
628 | { | |
629 | struct ieee80211_local *local = hw_to_local(hw); | |
630 | struct sta_info *sta; | |
631 | u8 *state; | |
632 | DECLARE_MAC_BUF(mac); | |
633 | ||
634 | if (tid >= STA_TID_NUM) { | |
635 | printk(KERN_DEBUG "Bad TID value: tid = %d (>= %d)\n", | |
636 | tid, STA_TID_NUM); | |
637 | return; | |
638 | } | |
639 | ||
640 | sta = sta_info_get(local, ra); | |
641 | if (!sta) { | |
642 | printk(KERN_DEBUG "Could not find station: %s\n", | |
643 | print_mac(mac, ra)); | |
644 | return; | |
645 | } | |
646 | ||
647 | state = &sta->ampdu_mlme.tid_tx[tid].state; | |
648 | spin_lock_bh(&sta->ampdu_mlme.ampdu_tx); | |
649 | ||
650 | if (!(*state & HT_ADDBA_REQUESTED_MSK)) { | |
651 | printk(KERN_DEBUG "addBA was not requested yet, state is %d\n", | |
652 | *state); | |
653 | spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx); | |
654 | sta_info_put(sta); | |
655 | return; | |
656 | } | |
657 | ||
658 | WARN_ON_ONCE(*state & HT_ADDBA_DRV_READY_MSK); | |
659 | ||
660 | *state |= HT_ADDBA_DRV_READY_MSK; | |
661 | ||
662 | if (*state == HT_AGG_STATE_OPERATIONAL) { | |
663 | printk(KERN_DEBUG "Aggregation is on for tid %d \n", tid); | |
664 | ieee80211_wake_queue(hw, sta->tid_to_tx_q[tid]); | |
665 | } | |
666 | spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx); | |
667 | sta_info_put(sta); | |
668 | } | |
669 | EXPORT_SYMBOL(ieee80211_start_tx_ba_cb); | |
670 | ||
671 | void ieee80211_stop_tx_ba_cb(struct ieee80211_hw *hw, u8 *ra, u8 tid) | |
672 | { | |
673 | struct ieee80211_local *local = hw_to_local(hw); | |
674 | struct sta_info *sta; | |
675 | u8 *state; | |
676 | int agg_queue; | |
677 | DECLARE_MAC_BUF(mac); | |
678 | ||
679 | if (tid >= STA_TID_NUM) { | |
680 | printk(KERN_DEBUG "Bad TID value: tid = %d (>= %d)\n", | |
681 | tid, STA_TID_NUM); | |
682 | return; | |
683 | } | |
684 | ||
685 | printk(KERN_DEBUG "Stop a BA session requested on DA %s tid %d\n", | |
686 | print_mac(mac, ra), tid); | |
687 | ||
688 | sta = sta_info_get(local, ra); | |
689 | if (!sta) { | |
690 | printk(KERN_DEBUG "Could not find station: %s\n", | |
691 | print_mac(mac, ra)); | |
692 | return; | |
693 | } | |
694 | state = &sta->ampdu_mlme.tid_tx[tid].state; | |
695 | ||
696 | spin_lock_bh(&sta->ampdu_mlme.ampdu_tx); | |
697 | if ((*state & HT_AGG_STATE_REQ_STOP_BA_MSK) == 0) { | |
698 | printk(KERN_DEBUG "unexpected callback to A-MPDU stop\n"); | |
699 | sta_info_put(sta); | |
700 | spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx); | |
701 | return; | |
702 | } | |
703 | ||
704 | if (*state & HT_AGG_STATE_INITIATOR_MSK) | |
705 | ieee80211_send_delba(sta->dev, ra, tid, | |
706 | WLAN_BACK_INITIATOR, WLAN_REASON_QSTA_NOT_USE); | |
707 | ||
708 | agg_queue = sta->tid_to_tx_q[tid]; | |
709 | ||
710 | /* avoid ordering issues: we are the only one that can modify | |
711 | * the content of the qdiscs */ | |
712 | spin_lock_bh(&local->mdev->queue_lock); | |
713 | /* remove the queue for this aggregation */ | |
9e723492 | 714 | ieee80211_ht_agg_queue_remove(local, sta, tid, 1); |
eadc8d9e RR |
715 | spin_unlock_bh(&local->mdev->queue_lock); |
716 | ||
717 | /* we just requeued the all the frames that were in the removed | |
718 | * queue, and since we might miss a softirq we do netif_schedule. | |
719 | * ieee80211_wake_queue is not used here as this queue is not | |
720 | * necessarily stopped */ | |
721 | netif_schedule(local->mdev); | |
722 | *state = HT_AGG_STATE_IDLE; | |
723 | sta->ampdu_mlme.tid_tx[tid].addba_req_num = 0; | |
724 | spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx); | |
725 | ||
726 | sta_info_put(sta); | |
727 | } | |
728 | EXPORT_SYMBOL(ieee80211_stop_tx_ba_cb); | |
729 | ||
730 | void ieee80211_start_tx_ba_cb_irqsafe(struct ieee80211_hw *hw, | |
731 | const u8 *ra, u16 tid) | |
732 | { | |
733 | struct ieee80211_local *local = hw_to_local(hw); | |
734 | struct ieee80211_ra_tid *ra_tid; | |
735 | struct sk_buff *skb = dev_alloc_skb(0); | |
736 | ||
737 | if (unlikely(!skb)) { | |
738 | if (net_ratelimit()) | |
739 | printk(KERN_WARNING "%s: Not enough memory, " | |
740 | "dropping start BA session", skb->dev->name); | |
741 | return; | |
742 | } | |
743 | ra_tid = (struct ieee80211_ra_tid *) &skb->cb; | |
744 | memcpy(&ra_tid->ra, ra, ETH_ALEN); | |
745 | ra_tid->tid = tid; | |
746 | ||
747 | skb->pkt_type = IEEE80211_ADDBA_MSG; | |
748 | skb_queue_tail(&local->skb_queue, skb); | |
749 | tasklet_schedule(&local->tasklet); | |
750 | } | |
751 | EXPORT_SYMBOL(ieee80211_start_tx_ba_cb_irqsafe); | |
752 | ||
753 | void ieee80211_stop_tx_ba_cb_irqsafe(struct ieee80211_hw *hw, | |
754 | const u8 *ra, u16 tid) | |
755 | { | |
756 | struct ieee80211_local *local = hw_to_local(hw); | |
757 | struct ieee80211_ra_tid *ra_tid; | |
758 | struct sk_buff *skb = dev_alloc_skb(0); | |
759 | ||
760 | if (unlikely(!skb)) { | |
761 | if (net_ratelimit()) | |
762 | printk(KERN_WARNING "%s: Not enough memory, " | |
763 | "dropping stop BA session", skb->dev->name); | |
764 | return; | |
765 | } | |
766 | ra_tid = (struct ieee80211_ra_tid *) &skb->cb; | |
767 | memcpy(&ra_tid->ra, ra, ETH_ALEN); | |
768 | ra_tid->tid = tid; | |
769 | ||
770 | skb->pkt_type = IEEE80211_DELBA_MSG; | |
771 | skb_queue_tail(&local->skb_queue, skb); | |
772 | tasklet_schedule(&local->tasklet); | |
773 | } | |
774 | EXPORT_SYMBOL(ieee80211_stop_tx_ba_cb_irqsafe); | |
775 | ||
f0706e82 JB |
776 | static void ieee80211_set_multicast_list(struct net_device *dev) |
777 | { | |
778 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
779 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
4150c572 | 780 | int allmulti, promisc, sdata_allmulti, sdata_promisc; |
f0706e82 | 781 | |
4150c572 JB |
782 | allmulti = !!(dev->flags & IFF_ALLMULTI); |
783 | promisc = !!(dev->flags & IFF_PROMISC); | |
b52f2198 JB |
784 | sdata_allmulti = !!(sdata->flags & IEEE80211_SDATA_ALLMULTI); |
785 | sdata_promisc = !!(sdata->flags & IEEE80211_SDATA_PROMISC); | |
4150c572 JB |
786 | |
787 | if (allmulti != sdata_allmulti) { | |
788 | if (dev->flags & IFF_ALLMULTI) | |
53918994 | 789 | atomic_inc(&local->iff_allmultis); |
4150c572 | 790 | else |
53918994 | 791 | atomic_dec(&local->iff_allmultis); |
13262ffd | 792 | sdata->flags ^= IEEE80211_SDATA_ALLMULTI; |
f0706e82 | 793 | } |
4150c572 JB |
794 | |
795 | if (promisc != sdata_promisc) { | |
796 | if (dev->flags & IFF_PROMISC) | |
53918994 | 797 | atomic_inc(&local->iff_promiscs); |
4150c572 | 798 | else |
53918994 | 799 | atomic_dec(&local->iff_promiscs); |
13262ffd | 800 | sdata->flags ^= IEEE80211_SDATA_PROMISC; |
f0706e82 | 801 | } |
4150c572 JB |
802 | |
803 | dev_mc_sync(local->mdev, dev); | |
f0706e82 JB |
804 | } |
805 | ||
3b04ddde SH |
806 | static const struct header_ops ieee80211_header_ops = { |
807 | .create = eth_header, | |
808 | .parse = header_parse_80211, | |
809 | .rebuild = eth_rebuild_header, | |
810 | .cache = eth_header_cache, | |
811 | .cache_update = eth_header_cache_update, | |
812 | }; | |
813 | ||
f9d540ee | 814 | /* Must not be called for mdev */ |
b2c258fb | 815 | void ieee80211_if_setup(struct net_device *dev) |
f0706e82 | 816 | { |
b2c258fb JB |
817 | ether_setup(dev); |
818 | dev->hard_start_xmit = ieee80211_subif_start_xmit; | |
819 | dev->wireless_handlers = &ieee80211_iw_handler_def; | |
820 | dev->set_multicast_list = ieee80211_set_multicast_list; | |
821 | dev->change_mtu = ieee80211_change_mtu; | |
b2c258fb JB |
822 | dev->open = ieee80211_open; |
823 | dev->stop = ieee80211_stop; | |
b2c258fb JB |
824 | dev->destructor = ieee80211_if_free; |
825 | } | |
f0706e82 | 826 | |
b2c258fb JB |
827 | /* WDS specialties */ |
828 | ||
829 | int ieee80211_if_update_wds(struct net_device *dev, u8 *remote_addr) | |
830 | { | |
831 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
832 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
833 | struct sta_info *sta; | |
0795af57 | 834 | DECLARE_MAC_BUF(mac); |
b2c258fb JB |
835 | |
836 | if (compare_ether_addr(remote_addr, sdata->u.wds.remote_addr) == 0) | |
837 | return 0; | |
838 | ||
839 | /* Create STA entry for the new peer */ | |
840 | sta = sta_info_add(local, dev, remote_addr, GFP_KERNEL); | |
841 | if (!sta) | |
842 | return -ENOMEM; | |
238814fd JB |
843 | |
844 | sta->flags |= WLAN_STA_AUTHORIZED; | |
845 | ||
b2c258fb JB |
846 | sta_info_put(sta); |
847 | ||
848 | /* Remove STA entry for the old peer */ | |
849 | sta = sta_info_get(local, sdata->u.wds.remote_addr); | |
850 | if (sta) { | |
be8755e1 | 851 | sta_info_free(sta); |
b2c258fb | 852 | sta_info_put(sta); |
b2c258fb JB |
853 | } else { |
854 | printk(KERN_DEBUG "%s: could not find STA entry for WDS link " | |
0795af57 JP |
855 | "peer %s\n", |
856 | dev->name, print_mac(mac, sdata->u.wds.remote_addr)); | |
b2c258fb JB |
857 | } |
858 | ||
859 | /* Update WDS link data */ | |
860 | memcpy(&sdata->u.wds.remote_addr, remote_addr, ETH_ALEN); | |
861 | ||
862 | return 0; | |
f0706e82 | 863 | } |
f0706e82 | 864 | |
b2c258fb JB |
865 | /* everything else */ |
866 | ||
b2c258fb JB |
867 | static int __ieee80211_if_config(struct net_device *dev, |
868 | struct sk_buff *beacon, | |
869 | struct ieee80211_tx_control *control) | |
870 | { | |
871 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
872 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
873 | struct ieee80211_if_conf conf; | |
b2c258fb JB |
874 | |
875 | if (!local->ops->config_interface || !netif_running(dev)) | |
f0706e82 | 876 | return 0; |
f0706e82 | 877 | |
b2c258fb | 878 | memset(&conf, 0, sizeof(conf)); |
51fb61e7 JB |
879 | conf.type = sdata->vif.type; |
880 | if (sdata->vif.type == IEEE80211_IF_TYPE_STA || | |
881 | sdata->vif.type == IEEE80211_IF_TYPE_IBSS) { | |
4150c572 | 882 | conf.bssid = sdata->u.sta.bssid; |
b2c258fb JB |
883 | conf.ssid = sdata->u.sta.ssid; |
884 | conf.ssid_len = sdata->u.sta.ssid_len; | |
51fb61e7 | 885 | } else if (sdata->vif.type == IEEE80211_IF_TYPE_AP) { |
b2c258fb JB |
886 | conf.ssid = sdata->u.ap.ssid; |
887 | conf.ssid_len = sdata->u.ap.ssid_len; | |
b2c258fb JB |
888 | conf.beacon = beacon; |
889 | conf.beacon_control = control; | |
f0706e82 | 890 | } |
b2c258fb | 891 | return local->ops->config_interface(local_to_hw(local), |
32bfd35d | 892 | &sdata->vif, &conf); |
f0706e82 JB |
893 | } |
894 | ||
b2c258fb JB |
895 | int ieee80211_if_config(struct net_device *dev) |
896 | { | |
897 | return __ieee80211_if_config(dev, NULL, NULL); | |
898 | } | |
f0706e82 | 899 | |
b2c258fb | 900 | int ieee80211_if_config_beacon(struct net_device *dev) |
f0706e82 | 901 | { |
f0706e82 | 902 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); |
b2c258fb | 903 | struct ieee80211_tx_control control; |
32bfd35d | 904 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
b2c258fb | 905 | struct sk_buff *skb; |
f0706e82 | 906 | |
b2c258fb | 907 | if (!(local->hw.flags & IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE)) |
f0706e82 | 908 | return 0; |
32bfd35d JB |
909 | skb = ieee80211_beacon_get(local_to_hw(local), &sdata->vif, |
910 | &control); | |
b2c258fb JB |
911 | if (!skb) |
912 | return -ENOMEM; | |
913 | return __ieee80211_if_config(dev, skb, &control); | |
914 | } | |
f0706e82 | 915 | |
b2c258fb JB |
916 | int ieee80211_hw_config(struct ieee80211_local *local) |
917 | { | |
b2c258fb JB |
918 | struct ieee80211_channel *chan; |
919 | int ret = 0; | |
f0706e82 | 920 | |
8318d78a | 921 | if (local->sta_sw_scanning) |
b2c258fb | 922 | chan = local->scan_channel; |
8318d78a | 923 | else |
b2c258fb | 924 | chan = local->oper_channel; |
f0706e82 | 925 | |
8318d78a JB |
926 | local->hw.conf.channel = chan; |
927 | ||
928 | if (!local->hw.conf.power_level) | |
929 | local->hw.conf.power_level = chan->max_power; | |
930 | else | |
931 | local->hw.conf.power_level = min(chan->max_power, | |
932 | local->hw.conf.power_level); | |
933 | ||
934 | local->hw.conf.max_antenna_gain = chan->max_antenna_gain; | |
f0706e82 | 935 | |
b2c258fb | 936 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
8318d78a JB |
937 | printk(KERN_DEBUG "%s: HW CONFIG: freq=%d\n", |
938 | wiphy_name(local->hw.wiphy), chan->center_freq); | |
939 | #endif | |
b2c258fb | 940 | |
f7c4daed | 941 | if (local->open_count) |
b2c258fb | 942 | ret = local->ops->config(local_to_hw(local), &local->hw.conf); |
f0706e82 | 943 | |
b2c258fb JB |
944 | return ret; |
945 | } | |
f0706e82 | 946 | |
d3c990fb RR |
947 | /** |
948 | * ieee80211_hw_config_ht should be used only after legacy configuration | |
949 | * has been determined, as ht configuration depends upon the hardware's | |
950 | * HT abilities for a _specific_ band. | |
951 | */ | |
952 | int ieee80211_hw_config_ht(struct ieee80211_local *local, int enable_ht, | |
953 | struct ieee80211_ht_info *req_ht_cap, | |
954 | struct ieee80211_ht_bss_info *req_bss_cap) | |
955 | { | |
956 | struct ieee80211_conf *conf = &local->hw.conf; | |
8318d78a | 957 | struct ieee80211_supported_band *sband; |
d3c990fb RR |
958 | int i; |
959 | ||
8318d78a JB |
960 | sband = local->hw.wiphy->bands[conf->channel->band]; |
961 | ||
d3c990fb | 962 | /* HT is not supported */ |
8318d78a | 963 | if (!sband->ht_info.ht_supported) { |
d3c990fb RR |
964 | conf->flags &= ~IEEE80211_CONF_SUPPORT_HT_MODE; |
965 | return -EOPNOTSUPP; | |
966 | } | |
967 | ||
968 | /* disable HT */ | |
969 | if (!enable_ht) { | |
970 | conf->flags &= ~IEEE80211_CONF_SUPPORT_HT_MODE; | |
971 | } else { | |
972 | conf->flags |= IEEE80211_CONF_SUPPORT_HT_MODE; | |
8318d78a | 973 | conf->ht_conf.cap = req_ht_cap->cap & sband->ht_info.cap; |
d3c990fb RR |
974 | conf->ht_conf.cap &= ~(IEEE80211_HT_CAP_MIMO_PS); |
975 | conf->ht_conf.cap |= | |
8318d78a | 976 | sband->ht_info.cap & IEEE80211_HT_CAP_MIMO_PS; |
d3c990fb RR |
977 | conf->ht_bss_conf.primary_channel = |
978 | req_bss_cap->primary_channel; | |
979 | conf->ht_bss_conf.bss_cap = req_bss_cap->bss_cap; | |
980 | conf->ht_bss_conf.bss_op_mode = req_bss_cap->bss_op_mode; | |
981 | for (i = 0; i < SUPP_MCS_SET_LEN; i++) | |
982 | conf->ht_conf.supp_mcs_set[i] = | |
8318d78a | 983 | sband->ht_info.supp_mcs_set[i] & |
d3c990fb RR |
984 | req_ht_cap->supp_mcs_set[i]; |
985 | ||
986 | /* In STA mode, this gives us indication | |
987 | * to the AP's mode of operation */ | |
988 | conf->ht_conf.ht_supported = 1; | |
989 | conf->ht_conf.ampdu_factor = req_ht_cap->ampdu_factor; | |
990 | conf->ht_conf.ampdu_density = req_ht_cap->ampdu_density; | |
991 | } | |
992 | ||
993 | local->ops->conf_ht(local_to_hw(local), &local->hw.conf); | |
994 | ||
995 | return 0; | |
996 | } | |
997 | ||
471b3efd JB |
998 | void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, |
999 | u32 changed) | |
d9430a32 | 1000 | { |
471b3efd JB |
1001 | struct ieee80211_local *local = sdata->local; |
1002 | ||
1003 | if (!changed) | |
1004 | return; | |
1005 | ||
1006 | if (local->ops->bss_info_changed) | |
1007 | local->ops->bss_info_changed(local_to_hw(local), | |
1008 | &sdata->vif, | |
1009 | &sdata->bss_conf, | |
1010 | changed); | |
d9430a32 DD |
1011 | } |
1012 | ||
1013 | void ieee80211_reset_erp_info(struct net_device *dev) | |
1014 | { | |
1015 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
1016 | ||
471b3efd JB |
1017 | sdata->bss_conf.use_cts_prot = 0; |
1018 | sdata->bss_conf.use_short_preamble = 0; | |
1019 | ieee80211_bss_info_change_notify(sdata, | |
1020 | BSS_CHANGED_ERP_CTS_PROT | | |
1021 | BSS_CHANGED_ERP_PREAMBLE); | |
d9430a32 DD |
1022 | } |
1023 | ||
f0706e82 JB |
1024 | void ieee80211_tx_status_irqsafe(struct ieee80211_hw *hw, |
1025 | struct sk_buff *skb, | |
1026 | struct ieee80211_tx_status *status) | |
1027 | { | |
1028 | struct ieee80211_local *local = hw_to_local(hw); | |
1029 | struct ieee80211_tx_status *saved; | |
1030 | int tmp; | |
1031 | ||
1032 | skb->dev = local->mdev; | |
1033 | saved = kmalloc(sizeof(struct ieee80211_tx_status), GFP_ATOMIC); | |
1034 | if (unlikely(!saved)) { | |
1035 | if (net_ratelimit()) | |
1036 | printk(KERN_WARNING "%s: Not enough memory, " | |
1037 | "dropping tx status", skb->dev->name); | |
1038 | /* should be dev_kfree_skb_irq, but due to this function being | |
1039 | * named _irqsafe instead of just _irq we can't be sure that | |
1040 | * people won't call it from non-irq contexts */ | |
1041 | dev_kfree_skb_any(skb); | |
1042 | return; | |
1043 | } | |
1044 | memcpy(saved, status, sizeof(struct ieee80211_tx_status)); | |
1045 | /* copy pointer to saved status into skb->cb for use by tasklet */ | |
1046 | memcpy(skb->cb, &saved, sizeof(saved)); | |
1047 | ||
1048 | skb->pkt_type = IEEE80211_TX_STATUS_MSG; | |
1049 | skb_queue_tail(status->control.flags & IEEE80211_TXCTL_REQ_TX_STATUS ? | |
1050 | &local->skb_queue : &local->skb_queue_unreliable, skb); | |
1051 | tmp = skb_queue_len(&local->skb_queue) + | |
1052 | skb_queue_len(&local->skb_queue_unreliable); | |
1053 | while (tmp > IEEE80211_IRQSAFE_QUEUE_LIMIT && | |
1054 | (skb = skb_dequeue(&local->skb_queue_unreliable))) { | |
1055 | memcpy(&saved, skb->cb, sizeof(saved)); | |
1056 | kfree(saved); | |
1057 | dev_kfree_skb_irq(skb); | |
1058 | tmp--; | |
1059 | I802_DEBUG_INC(local->tx_status_drop); | |
1060 | } | |
1061 | tasklet_schedule(&local->tasklet); | |
1062 | } | |
1063 | EXPORT_SYMBOL(ieee80211_tx_status_irqsafe); | |
1064 | ||
1065 | static void ieee80211_tasklet_handler(unsigned long data) | |
1066 | { | |
1067 | struct ieee80211_local *local = (struct ieee80211_local *) data; | |
1068 | struct sk_buff *skb; | |
1069 | struct ieee80211_rx_status rx_status; | |
1070 | struct ieee80211_tx_status *tx_status; | |
eadc8d9e | 1071 | struct ieee80211_ra_tid *ra_tid; |
f0706e82 JB |
1072 | |
1073 | while ((skb = skb_dequeue(&local->skb_queue)) || | |
1074 | (skb = skb_dequeue(&local->skb_queue_unreliable))) { | |
1075 | switch (skb->pkt_type) { | |
1076 | case IEEE80211_RX_MSG: | |
1077 | /* status is in skb->cb */ | |
1078 | memcpy(&rx_status, skb->cb, sizeof(rx_status)); | |
51fb61e7 | 1079 | /* Clear skb->pkt_type in order to not confuse kernel |
f0706e82 JB |
1080 | * netstack. */ |
1081 | skb->pkt_type = 0; | |
1082 | __ieee80211_rx(local_to_hw(local), skb, &rx_status); | |
1083 | break; | |
1084 | case IEEE80211_TX_STATUS_MSG: | |
1085 | /* get pointer to saved status out of skb->cb */ | |
1086 | memcpy(&tx_status, skb->cb, sizeof(tx_status)); | |
1087 | skb->pkt_type = 0; | |
1088 | ieee80211_tx_status(local_to_hw(local), | |
1089 | skb, tx_status); | |
1090 | kfree(tx_status); | |
1091 | break; | |
eadc8d9e RR |
1092 | case IEEE80211_DELBA_MSG: |
1093 | ra_tid = (struct ieee80211_ra_tid *) &skb->cb; | |
1094 | ieee80211_stop_tx_ba_cb(local_to_hw(local), | |
1095 | ra_tid->ra, ra_tid->tid); | |
1096 | dev_kfree_skb(skb); | |
1097 | break; | |
1098 | case IEEE80211_ADDBA_MSG: | |
1099 | ra_tid = (struct ieee80211_ra_tid *) &skb->cb; | |
1100 | ieee80211_start_tx_ba_cb(local_to_hw(local), | |
1101 | ra_tid->ra, ra_tid->tid); | |
1102 | dev_kfree_skb(skb); | |
1103 | break ; | |
f0706e82 JB |
1104 | default: /* should never get here! */ |
1105 | printk(KERN_ERR "%s: Unknown message type (%d)\n", | |
dd1cd4c6 | 1106 | wiphy_name(local->hw.wiphy), skb->pkt_type); |
f0706e82 JB |
1107 | dev_kfree_skb(skb); |
1108 | break; | |
1109 | } | |
1110 | } | |
1111 | } | |
1112 | ||
f0706e82 JB |
1113 | /* Remove added headers (e.g., QoS control), encryption header/MIC, etc. to |
1114 | * make a prepared TX frame (one that has been given to hw) to look like brand | |
1115 | * new IEEE 802.11 frame that is ready to go through TX processing again. | |
1116 | * Also, tx_packet_data in cb is restored from tx_control. */ | |
1117 | static void ieee80211_remove_tx_extra(struct ieee80211_local *local, | |
1118 | struct ieee80211_key *key, | |
1119 | struct sk_buff *skb, | |
1120 | struct ieee80211_tx_control *control) | |
1121 | { | |
1122 | int hdrlen, iv_len, mic_len; | |
1123 | struct ieee80211_tx_packet_data *pkt_data; | |
1124 | ||
1125 | pkt_data = (struct ieee80211_tx_packet_data *)skb->cb; | |
32bfd35d | 1126 | pkt_data->ifindex = vif_to_sdata(control->vif)->dev->ifindex; |
e8bf9649 JS |
1127 | pkt_data->flags = 0; |
1128 | if (control->flags & IEEE80211_TXCTL_REQ_TX_STATUS) | |
1129 | pkt_data->flags |= IEEE80211_TXPD_REQ_TX_STATUS; | |
1130 | if (control->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT) | |
1131 | pkt_data->flags |= IEEE80211_TXPD_DO_NOT_ENCRYPT; | |
1132 | if (control->flags & IEEE80211_TXCTL_REQUEUE) | |
1133 | pkt_data->flags |= IEEE80211_TXPD_REQUEUE; | |
678f5f71 JB |
1134 | if (control->flags & IEEE80211_TXCTL_EAPOL_FRAME) |
1135 | pkt_data->flags |= IEEE80211_TXPD_EAPOL_FRAME; | |
f0706e82 JB |
1136 | pkt_data->queue = control->queue; |
1137 | ||
1138 | hdrlen = ieee80211_get_hdrlen_from_skb(skb); | |
1139 | ||
1140 | if (!key) | |
1141 | goto no_key; | |
1142 | ||
8f20fc24 | 1143 | switch (key->conf.alg) { |
f0706e82 JB |
1144 | case ALG_WEP: |
1145 | iv_len = WEP_IV_LEN; | |
1146 | mic_len = WEP_ICV_LEN; | |
1147 | break; | |
1148 | case ALG_TKIP: | |
1149 | iv_len = TKIP_IV_LEN; | |
1150 | mic_len = TKIP_ICV_LEN; | |
1151 | break; | |
1152 | case ALG_CCMP: | |
1153 | iv_len = CCMP_HDR_LEN; | |
1154 | mic_len = CCMP_MIC_LEN; | |
1155 | break; | |
1156 | default: | |
1157 | goto no_key; | |
1158 | } | |
1159 | ||
8f20fc24 | 1160 | if (skb->len >= mic_len && |
11a843b7 | 1161 | !(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)) |
f0706e82 JB |
1162 | skb_trim(skb, skb->len - mic_len); |
1163 | if (skb->len >= iv_len && skb->len > hdrlen) { | |
1164 | memmove(skb->data + iv_len, skb->data, hdrlen); | |
1165 | skb_pull(skb, iv_len); | |
1166 | } | |
1167 | ||
1168 | no_key: | |
1169 | { | |
1170 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; | |
1171 | u16 fc = le16_to_cpu(hdr->frame_control); | |
1172 | if ((fc & 0x8C) == 0x88) /* QoS Control Field */ { | |
1173 | fc &= ~IEEE80211_STYPE_QOS_DATA; | |
1174 | hdr->frame_control = cpu_to_le16(fc); | |
1175 | memmove(skb->data + 2, skb->data, hdrlen - 2); | |
1176 | skb_pull(skb, 2); | |
1177 | } | |
1178 | } | |
1179 | } | |
1180 | ||
f0706e82 JB |
1181 | void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb, |
1182 | struct ieee80211_tx_status *status) | |
1183 | { | |
1184 | struct sk_buff *skb2; | |
1185 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; | |
1186 | struct ieee80211_local *local = hw_to_local(hw); | |
1187 | u16 frag, type; | |
b306f453 JB |
1188 | struct ieee80211_tx_status_rtap_hdr *rthdr; |
1189 | struct ieee80211_sub_if_data *sdata; | |
3d30d949 | 1190 | struct net_device *prev_dev = NULL; |
f0706e82 JB |
1191 | |
1192 | if (!status) { | |
1193 | printk(KERN_ERR | |
1194 | "%s: ieee80211_tx_status called with NULL status\n", | |
dd1cd4c6 | 1195 | wiphy_name(local->hw.wiphy)); |
f0706e82 JB |
1196 | dev_kfree_skb(skb); |
1197 | return; | |
1198 | } | |
1199 | ||
1200 | if (status->excessive_retries) { | |
1201 | struct sta_info *sta; | |
1202 | sta = sta_info_get(local, hdr->addr1); | |
1203 | if (sta) { | |
1204 | if (sta->flags & WLAN_STA_PS) { | |
1205 | /* The STA is in power save mode, so assume | |
1206 | * that this TX packet failed because of that. | |
1207 | */ | |
1208 | status->excessive_retries = 0; | |
1209 | status->flags |= IEEE80211_TX_STATUS_TX_FILTERED; | |
1210 | } | |
1211 | sta_info_put(sta); | |
1212 | } | |
1213 | } | |
1214 | ||
1215 | if (status->flags & IEEE80211_TX_STATUS_TX_FILTERED) { | |
1216 | struct sta_info *sta; | |
1217 | sta = sta_info_get(local, hdr->addr1); | |
1218 | if (sta) { | |
1219 | sta->tx_filtered_count++; | |
1220 | ||
1221 | /* Clear the TX filter mask for this STA when sending | |
1222 | * the next packet. If the STA went to power save mode, | |
1223 | * this will happen when it is waking up for the next | |
1224 | * time. */ | |
1225 | sta->clear_dst_mask = 1; | |
1226 | ||
1227 | /* TODO: Is the WLAN_STA_PS flag always set here or is | |
1228 | * the race between RX and TX status causing some | |
1229 | * packets to be filtered out before 80211.o gets an | |
1230 | * update for PS status? This seems to be the case, so | |
1231 | * no changes are likely to be needed. */ | |
1232 | if (sta->flags & WLAN_STA_PS && | |
1233 | skb_queue_len(&sta->tx_filtered) < | |
1234 | STA_MAX_TX_BUFFER) { | |
1235 | ieee80211_remove_tx_extra(local, sta->key, | |
1236 | skb, | |
1237 | &status->control); | |
1238 | skb_queue_tail(&sta->tx_filtered, skb); | |
1239 | } else if (!(sta->flags & WLAN_STA_PS) && | |
1240 | !(status->control.flags & IEEE80211_TXCTL_REQUEUE)) { | |
1241 | /* Software retry the packet once */ | |
1242 | status->control.flags |= IEEE80211_TXCTL_REQUEUE; | |
1243 | ieee80211_remove_tx_extra(local, sta->key, | |
1244 | skb, | |
1245 | &status->control); | |
1246 | dev_queue_xmit(skb); | |
1247 | } else { | |
1248 | if (net_ratelimit()) { | |
1249 | printk(KERN_DEBUG "%s: dropped TX " | |
1250 | "filtered frame queue_len=%d " | |
1251 | "PS=%d @%lu\n", | |
dd1cd4c6 | 1252 | wiphy_name(local->hw.wiphy), |
f0706e82 JB |
1253 | skb_queue_len( |
1254 | &sta->tx_filtered), | |
1255 | !!(sta->flags & WLAN_STA_PS), | |
1256 | jiffies); | |
1257 | } | |
1258 | dev_kfree_skb(skb); | |
1259 | } | |
1260 | sta_info_put(sta); | |
1261 | return; | |
1262 | } | |
1abbe498 MN |
1263 | } else |
1264 | rate_control_tx_status(local->mdev, skb, status); | |
f0706e82 JB |
1265 | |
1266 | ieee80211_led_tx(local, 0); | |
1267 | ||
1268 | /* SNMP counters | |
1269 | * Fragments are passed to low-level drivers as separate skbs, so these | |
1270 | * are actually fragments, not frames. Update frame counters only for | |
1271 | * the first fragment of the frame. */ | |
1272 | ||
1273 | frag = le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_FRAG; | |
1274 | type = le16_to_cpu(hdr->frame_control) & IEEE80211_FCTL_FTYPE; | |
1275 | ||
1276 | if (status->flags & IEEE80211_TX_STATUS_ACK) { | |
1277 | if (frag == 0) { | |
1278 | local->dot11TransmittedFrameCount++; | |
1279 | if (is_multicast_ether_addr(hdr->addr1)) | |
1280 | local->dot11MulticastTransmittedFrameCount++; | |
1281 | if (status->retry_count > 0) | |
1282 | local->dot11RetryCount++; | |
1283 | if (status->retry_count > 1) | |
1284 | local->dot11MultipleRetryCount++; | |
1285 | } | |
1286 | ||
1287 | /* This counter shall be incremented for an acknowledged MPDU | |
1288 | * with an individual address in the address 1 field or an MPDU | |
1289 | * with a multicast address in the address 1 field of type Data | |
1290 | * or Management. */ | |
1291 | if (!is_multicast_ether_addr(hdr->addr1) || | |
1292 | type == IEEE80211_FTYPE_DATA || | |
1293 | type == IEEE80211_FTYPE_MGMT) | |
1294 | local->dot11TransmittedFragmentCount++; | |
1295 | } else { | |
1296 | if (frag == 0) | |
1297 | local->dot11FailedCount++; | |
1298 | } | |
1299 | ||
b306f453 JB |
1300 | /* this was a transmitted frame, but now we want to reuse it */ |
1301 | skb_orphan(skb); | |
1302 | ||
3d30d949 MW |
1303 | /* |
1304 | * This is a bit racy but we can avoid a lot of work | |
1305 | * with this test... | |
1306 | */ | |
1307 | if (!local->monitors && !local->cooked_mntrs) { | |
f0706e82 JB |
1308 | dev_kfree_skb(skb); |
1309 | return; | |
1310 | } | |
1311 | ||
b306f453 | 1312 | /* send frame to monitor interfaces now */ |
f0706e82 | 1313 | |
b306f453 JB |
1314 | if (skb_headroom(skb) < sizeof(*rthdr)) { |
1315 | printk(KERN_ERR "ieee80211_tx_status: headroom too small\n"); | |
f0706e82 JB |
1316 | dev_kfree_skb(skb); |
1317 | return; | |
1318 | } | |
f0706e82 | 1319 | |
b306f453 JB |
1320 | rthdr = (struct ieee80211_tx_status_rtap_hdr*) |
1321 | skb_push(skb, sizeof(*rthdr)); | |
1322 | ||
1323 | memset(rthdr, 0, sizeof(*rthdr)); | |
1324 | rthdr->hdr.it_len = cpu_to_le16(sizeof(*rthdr)); | |
1325 | rthdr->hdr.it_present = | |
1326 | cpu_to_le32((1 << IEEE80211_RADIOTAP_TX_FLAGS) | | |
1327 | (1 << IEEE80211_RADIOTAP_DATA_RETRIES)); | |
1328 | ||
1329 | if (!(status->flags & IEEE80211_TX_STATUS_ACK) && | |
1330 | !is_multicast_ether_addr(hdr->addr1)) | |
1331 | rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_FAIL); | |
1332 | ||
1333 | if ((status->control.flags & IEEE80211_TXCTL_USE_RTS_CTS) && | |
1334 | (status->control.flags & IEEE80211_TXCTL_USE_CTS_PROTECT)) | |
1335 | rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_CTS); | |
1336 | else if (status->control.flags & IEEE80211_TXCTL_USE_RTS_CTS) | |
1337 | rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_RTS); | |
1338 | ||
1339 | rthdr->data_retries = status->retry_count; | |
1340 | ||
3d30d949 MW |
1341 | /* XXX: is this sufficient for BPF? */ |
1342 | skb_set_mac_header(skb, 0); | |
1343 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
1344 | skb->pkt_type = PACKET_OTHERHOST; | |
1345 | skb->protocol = htons(ETH_P_802_2); | |
1346 | memset(skb->cb, 0, sizeof(skb->cb)); | |
1347 | ||
79010420 | 1348 | rcu_read_lock(); |
79010420 | 1349 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
51fb61e7 | 1350 | if (sdata->vif.type == IEEE80211_IF_TYPE_MNTR) { |
b306f453 JB |
1351 | if (!netif_running(sdata->dev)) |
1352 | continue; | |
3d30d949 MW |
1353 | |
1354 | if (prev_dev) { | |
79010420 | 1355 | skb2 = skb_clone(skb, GFP_ATOMIC); |
3d30d949 MW |
1356 | if (skb2) { |
1357 | skb2->dev = prev_dev; | |
1358 | netif_rx(skb2); | |
1359 | } | |
1360 | } | |
1361 | ||
1362 | prev_dev = sdata->dev; | |
b306f453 JB |
1363 | } |
1364 | } | |
3d30d949 MW |
1365 | if (prev_dev) { |
1366 | skb->dev = prev_dev; | |
1367 | netif_rx(skb); | |
1368 | skb = NULL; | |
1369 | } | |
79010420 | 1370 | rcu_read_unlock(); |
3d30d949 | 1371 | dev_kfree_skb(skb); |
f0706e82 JB |
1372 | } |
1373 | EXPORT_SYMBOL(ieee80211_tx_status); | |
1374 | ||
f0706e82 JB |
1375 | struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len, |
1376 | const struct ieee80211_ops *ops) | |
1377 | { | |
1378 | struct net_device *mdev; | |
1379 | struct ieee80211_local *local; | |
1380 | struct ieee80211_sub_if_data *sdata; | |
1381 | int priv_size; | |
1382 | struct wiphy *wiphy; | |
1383 | ||
1384 | /* Ensure 32-byte alignment of our private data and hw private data. | |
1385 | * We use the wiphy priv data for both our ieee80211_local and for | |
1386 | * the driver's private data | |
1387 | * | |
1388 | * In memory it'll be like this: | |
1389 | * | |
1390 | * +-------------------------+ | |
1391 | * | struct wiphy | | |
1392 | * +-------------------------+ | |
1393 | * | struct ieee80211_local | | |
1394 | * +-------------------------+ | |
1395 | * | driver's private data | | |
1396 | * +-------------------------+ | |
1397 | * | |
1398 | */ | |
1399 | priv_size = ((sizeof(struct ieee80211_local) + | |
1400 | NETDEV_ALIGN_CONST) & ~NETDEV_ALIGN_CONST) + | |
1401 | priv_data_len; | |
1402 | ||
1403 | wiphy = wiphy_new(&mac80211_config_ops, priv_size); | |
1404 | ||
1405 | if (!wiphy) | |
1406 | return NULL; | |
1407 | ||
1408 | wiphy->privid = mac80211_wiphy_privid; | |
1409 | ||
1410 | local = wiphy_priv(wiphy); | |
1411 | local->hw.wiphy = wiphy; | |
1412 | ||
1413 | local->hw.priv = (char *)local + | |
1414 | ((sizeof(struct ieee80211_local) + | |
1415 | NETDEV_ALIGN_CONST) & ~NETDEV_ALIGN_CONST); | |
1416 | ||
4480f15c | 1417 | BUG_ON(!ops->tx); |
4150c572 JB |
1418 | BUG_ON(!ops->start); |
1419 | BUG_ON(!ops->stop); | |
4480f15c JB |
1420 | BUG_ON(!ops->config); |
1421 | BUG_ON(!ops->add_interface); | |
4150c572 JB |
1422 | BUG_ON(!ops->remove_interface); |
1423 | BUG_ON(!ops->configure_filter); | |
f0706e82 JB |
1424 | local->ops = ops; |
1425 | ||
1426 | /* for now, mdev needs sub_if_data :/ */ | |
1427 | mdev = alloc_netdev(sizeof(struct ieee80211_sub_if_data), | |
1428 | "wmaster%d", ether_setup); | |
1429 | if (!mdev) { | |
1430 | wiphy_free(wiphy); | |
1431 | return NULL; | |
1432 | } | |
1433 | ||
1434 | sdata = IEEE80211_DEV_TO_SUB_IF(mdev); | |
1435 | mdev->ieee80211_ptr = &sdata->wdev; | |
1436 | sdata->wdev.wiphy = wiphy; | |
1437 | ||
1438 | local->hw.queues = 1; /* default */ | |
1439 | ||
1440 | local->mdev = mdev; | |
f0706e82 JB |
1441 | |
1442 | local->bridge_packets = 1; | |
1443 | ||
1444 | local->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD; | |
1445 | local->fragmentation_threshold = IEEE80211_MAX_FRAG_THRESHOLD; | |
1446 | local->short_retry_limit = 7; | |
1447 | local->long_retry_limit = 4; | |
1448 | local->hw.conf.radio_enabled = 1; | |
f0706e82 | 1449 | |
79010420 | 1450 | INIT_LIST_HEAD(&local->interfaces); |
f0706e82 JB |
1451 | |
1452 | INIT_DELAYED_WORK(&local->scan_work, ieee80211_sta_scan_work); | |
f0706e82 JB |
1453 | ieee80211_rx_bss_list_init(mdev); |
1454 | ||
1455 | sta_info_init(local); | |
1456 | ||
1457 | mdev->hard_start_xmit = ieee80211_master_start_xmit; | |
1458 | mdev->open = ieee80211_master_open; | |
1459 | mdev->stop = ieee80211_master_stop; | |
1460 | mdev->type = ARPHRD_IEEE80211; | |
3b04ddde | 1461 | mdev->header_ops = &ieee80211_header_ops; |
4150c572 | 1462 | mdev->set_multicast_list = ieee80211_master_set_multicast_list; |
f0706e82 | 1463 | |
51fb61e7 | 1464 | sdata->vif.type = IEEE80211_IF_TYPE_AP; |
f0706e82 JB |
1465 | sdata->dev = mdev; |
1466 | sdata->local = local; | |
1467 | sdata->u.ap.force_unicast_rateidx = -1; | |
1468 | sdata->u.ap.max_ratectrl_rateidx = -1; | |
1469 | ieee80211_if_sdata_init(sdata); | |
79010420 JB |
1470 | /* no RCU needed since we're still during init phase */ |
1471 | list_add_tail(&sdata->list, &local->interfaces); | |
f0706e82 JB |
1472 | |
1473 | tasklet_init(&local->tx_pending_tasklet, ieee80211_tx_pending, | |
1474 | (unsigned long)local); | |
1475 | tasklet_disable(&local->tx_pending_tasklet); | |
1476 | ||
1477 | tasklet_init(&local->tasklet, | |
1478 | ieee80211_tasklet_handler, | |
1479 | (unsigned long) local); | |
1480 | tasklet_disable(&local->tasklet); | |
1481 | ||
1482 | skb_queue_head_init(&local->skb_queue); | |
1483 | skb_queue_head_init(&local->skb_queue_unreliable); | |
1484 | ||
1485 | return local_to_hw(local); | |
1486 | } | |
1487 | EXPORT_SYMBOL(ieee80211_alloc_hw); | |
1488 | ||
1489 | int ieee80211_register_hw(struct ieee80211_hw *hw) | |
1490 | { | |
1491 | struct ieee80211_local *local = hw_to_local(hw); | |
1492 | const char *name; | |
1493 | int result; | |
8318d78a JB |
1494 | enum ieee80211_band band; |
1495 | ||
1496 | /* | |
1497 | * generic code guarantees at least one band, | |
1498 | * set this very early because much code assumes | |
1499 | * that hw.conf.channel is assigned | |
1500 | */ | |
1501 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { | |
1502 | struct ieee80211_supported_band *sband; | |
1503 | ||
1504 | sband = local->hw.wiphy->bands[band]; | |
1505 | if (sband) { | |
1506 | /* init channel we're on */ | |
1507 | local->hw.conf.channel = | |
1508 | local->oper_channel = | |
1509 | local->scan_channel = &sband->channels[0]; | |
1510 | break; | |
1511 | } | |
1512 | } | |
f0706e82 JB |
1513 | |
1514 | result = wiphy_register(local->hw.wiphy); | |
1515 | if (result < 0) | |
1516 | return result; | |
1517 | ||
1518 | name = wiphy_dev(local->hw.wiphy)->driver->name; | |
1519 | local->hw.workqueue = create_singlethread_workqueue(name); | |
1520 | if (!local->hw.workqueue) { | |
1521 | result = -ENOMEM; | |
1522 | goto fail_workqueue; | |
1523 | } | |
1524 | ||
b306f453 JB |
1525 | /* |
1526 | * The hardware needs headroom for sending the frame, | |
1527 | * and we need some headroom for passing the frame to monitor | |
1528 | * interfaces, but never both at the same time. | |
1529 | */ | |
33ccad35 JB |
1530 | local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom, |
1531 | sizeof(struct ieee80211_tx_status_rtap_hdr)); | |
b306f453 | 1532 | |
e9f207f0 JB |
1533 | debugfs_hw_add(local); |
1534 | ||
f0706e82 JB |
1535 | local->hw.conf.beacon_int = 1000; |
1536 | ||
1537 | local->wstats_flags |= local->hw.max_rssi ? | |
1538 | IW_QUAL_LEVEL_UPDATED : IW_QUAL_LEVEL_INVALID; | |
1539 | local->wstats_flags |= local->hw.max_signal ? | |
1540 | IW_QUAL_QUAL_UPDATED : IW_QUAL_QUAL_INVALID; | |
1541 | local->wstats_flags |= local->hw.max_noise ? | |
1542 | IW_QUAL_NOISE_UPDATED : IW_QUAL_NOISE_INVALID; | |
1543 | if (local->hw.max_rssi < 0 || local->hw.max_noise < 0) | |
1544 | local->wstats_flags |= IW_QUAL_DBM; | |
1545 | ||
1546 | result = sta_info_start(local); | |
1547 | if (result < 0) | |
1548 | goto fail_sta_info; | |
1549 | ||
1550 | rtnl_lock(); | |
1551 | result = dev_alloc_name(local->mdev, local->mdev->name); | |
1552 | if (result < 0) | |
1553 | goto fail_dev; | |
1554 | ||
1555 | memcpy(local->mdev->dev_addr, local->hw.wiphy->perm_addr, ETH_ALEN); | |
1556 | SET_NETDEV_DEV(local->mdev, wiphy_dev(local->hw.wiphy)); | |
1557 | ||
1558 | result = register_netdevice(local->mdev); | |
1559 | if (result < 0) | |
1560 | goto fail_dev; | |
1561 | ||
e9f207f0 | 1562 | ieee80211_debugfs_add_netdev(IEEE80211_DEV_TO_SUB_IF(local->mdev)); |
5b2812e9 | 1563 | ieee80211_if_set_type(local->mdev, IEEE80211_IF_TYPE_AP); |
e9f207f0 | 1564 | |
830f9038 JB |
1565 | result = ieee80211_init_rate_ctrl_alg(local, |
1566 | hw->rate_control_algorithm); | |
f0706e82 JB |
1567 | if (result < 0) { |
1568 | printk(KERN_DEBUG "%s: Failed to initialize rate control " | |
dd1cd4c6 | 1569 | "algorithm\n", wiphy_name(local->hw.wiphy)); |
f0706e82 JB |
1570 | goto fail_rate; |
1571 | } | |
1572 | ||
1573 | result = ieee80211_wep_init(local); | |
1574 | ||
1575 | if (result < 0) { | |
1576 | printk(KERN_DEBUG "%s: Failed to initialize wep\n", | |
dd1cd4c6 | 1577 | wiphy_name(local->hw.wiphy)); |
f0706e82 JB |
1578 | goto fail_wep; |
1579 | } | |
1580 | ||
1581 | ieee80211_install_qdisc(local->mdev); | |
1582 | ||
1583 | /* add one default STA interface */ | |
1584 | result = ieee80211_if_add(local->mdev, "wlan%d", NULL, | |
1585 | IEEE80211_IF_TYPE_STA); | |
1586 | if (result) | |
1587 | printk(KERN_WARNING "%s: Failed to add default virtual iface\n", | |
dd1cd4c6 | 1588 | wiphy_name(local->hw.wiphy)); |
f0706e82 JB |
1589 | |
1590 | local->reg_state = IEEE80211_DEV_REGISTERED; | |
1591 | rtnl_unlock(); | |
1592 | ||
1593 | ieee80211_led_init(local); | |
1594 | ||
1595 | return 0; | |
1596 | ||
1597 | fail_wep: | |
1598 | rate_control_deinitialize(local); | |
1599 | fail_rate: | |
e9f207f0 | 1600 | ieee80211_debugfs_remove_netdev(IEEE80211_DEV_TO_SUB_IF(local->mdev)); |
f0706e82 JB |
1601 | unregister_netdevice(local->mdev); |
1602 | fail_dev: | |
1603 | rtnl_unlock(); | |
1604 | sta_info_stop(local); | |
1605 | fail_sta_info: | |
e9f207f0 | 1606 | debugfs_hw_del(local); |
f0706e82 JB |
1607 | destroy_workqueue(local->hw.workqueue); |
1608 | fail_workqueue: | |
1609 | wiphy_unregister(local->hw.wiphy); | |
1610 | return result; | |
1611 | } | |
1612 | EXPORT_SYMBOL(ieee80211_register_hw); | |
1613 | ||
f0706e82 JB |
1614 | void ieee80211_unregister_hw(struct ieee80211_hw *hw) |
1615 | { | |
1616 | struct ieee80211_local *local = hw_to_local(hw); | |
1617 | struct ieee80211_sub_if_data *sdata, *tmp; | |
f0706e82 JB |
1618 | |
1619 | tasklet_kill(&local->tx_pending_tasklet); | |
1620 | tasklet_kill(&local->tasklet); | |
1621 | ||
1622 | rtnl_lock(); | |
1623 | ||
1624 | BUG_ON(local->reg_state != IEEE80211_DEV_REGISTERED); | |
1625 | ||
1626 | local->reg_state = IEEE80211_DEV_UNREGISTERED; | |
f0706e82 | 1627 | |
79010420 JB |
1628 | /* |
1629 | * At this point, interface list manipulations are fine | |
1630 | * because the driver cannot be handing us frames any | |
1631 | * more and the tasklet is killed. | |
1632 | */ | |
5b2812e9 JB |
1633 | |
1634 | /* | |
1635 | * First, we remove all non-master interfaces. Do this because they | |
1636 | * may have bss pointer dependency on the master, and when we free | |
1637 | * the master these would be freed as well, breaking our list | |
1638 | * iteration completely. | |
1639 | */ | |
1640 | list_for_each_entry_safe(sdata, tmp, &local->interfaces, list) { | |
1641 | if (sdata->dev == local->mdev) | |
1642 | continue; | |
1643 | list_del(&sdata->list); | |
f0706e82 | 1644 | __ieee80211_if_del(local, sdata); |
5b2812e9 JB |
1645 | } |
1646 | ||
1647 | /* then, finally, remove the master interface */ | |
1648 | __ieee80211_if_del(local, IEEE80211_DEV_TO_SUB_IF(local->mdev)); | |
f0706e82 JB |
1649 | |
1650 | rtnl_unlock(); | |
1651 | ||
f0706e82 JB |
1652 | ieee80211_rx_bss_list_deinit(local->mdev); |
1653 | ieee80211_clear_tx_pending(local); | |
1654 | sta_info_stop(local); | |
1655 | rate_control_deinitialize(local); | |
e9f207f0 | 1656 | debugfs_hw_del(local); |
f0706e82 | 1657 | |
f0706e82 JB |
1658 | if (skb_queue_len(&local->skb_queue) |
1659 | || skb_queue_len(&local->skb_queue_unreliable)) | |
1660 | printk(KERN_WARNING "%s: skb_queue not empty\n", | |
dd1cd4c6 | 1661 | wiphy_name(local->hw.wiphy)); |
f0706e82 JB |
1662 | skb_queue_purge(&local->skb_queue); |
1663 | skb_queue_purge(&local->skb_queue_unreliable); | |
1664 | ||
1665 | destroy_workqueue(local->hw.workqueue); | |
1666 | wiphy_unregister(local->hw.wiphy); | |
1667 | ieee80211_wep_free(local); | |
1668 | ieee80211_led_exit(local); | |
1669 | } | |
1670 | EXPORT_SYMBOL(ieee80211_unregister_hw); | |
1671 | ||
1672 | void ieee80211_free_hw(struct ieee80211_hw *hw) | |
1673 | { | |
1674 | struct ieee80211_local *local = hw_to_local(hw); | |
1675 | ||
1676 | ieee80211_if_free(local->mdev); | |
1677 | wiphy_free(local->hw.wiphy); | |
1678 | } | |
1679 | EXPORT_SYMBOL(ieee80211_free_hw); | |
1680 | ||
f0706e82 JB |
1681 | static int __init ieee80211_init(void) |
1682 | { | |
1683 | struct sk_buff *skb; | |
1684 | int ret; | |
1685 | ||
1686 | BUILD_BUG_ON(sizeof(struct ieee80211_tx_packet_data) > sizeof(skb->cb)); | |
1687 | ||
4b475898 | 1688 | ret = rc80211_simple_init(); |
ac71c691 | 1689 | if (ret) |
3eadf5f4 | 1690 | goto out; |
ad018375 | 1691 | |
4b475898 | 1692 | ret = rc80211_pid_init(); |
ad018375 | 1693 | if (ret) |
3eadf5f4 | 1694 | goto out_cleanup_simple; |
ac71c691 | 1695 | |
f0706e82 JB |
1696 | ret = ieee80211_wme_register(); |
1697 | if (ret) { | |
1698 | printk(KERN_DEBUG "ieee80211_init: failed to " | |
1699 | "initialize WME (err=%d)\n", ret); | |
3eadf5f4 | 1700 | goto out_cleanup_pid; |
f0706e82 JB |
1701 | } |
1702 | ||
e9f207f0 JB |
1703 | ieee80211_debugfs_netdev_init(); |
1704 | ||
f0706e82 | 1705 | return 0; |
ad018375 | 1706 | |
3eadf5f4 | 1707 | out_cleanup_pid: |
4b475898 | 1708 | rc80211_pid_exit(); |
3eadf5f4 JB |
1709 | out_cleanup_simple: |
1710 | rc80211_simple_exit(); | |
1711 | out: | |
ad018375 | 1712 | return ret; |
f0706e82 JB |
1713 | } |
1714 | ||
f0706e82 JB |
1715 | static void __exit ieee80211_exit(void) |
1716 | { | |
4b475898 JB |
1717 | rc80211_simple_exit(); |
1718 | rc80211_pid_exit(); | |
ac71c691 | 1719 | |
f0706e82 | 1720 | ieee80211_wme_unregister(); |
e9f207f0 | 1721 | ieee80211_debugfs_netdev_exit(); |
f0706e82 JB |
1722 | } |
1723 | ||
1724 | ||
ca9938fe | 1725 | subsys_initcall(ieee80211_init); |
f0706e82 JB |
1726 | module_exit(ieee80211_exit); |
1727 | ||
1728 | MODULE_DESCRIPTION("IEEE 802.11 subsystem"); | |
1729 | MODULE_LICENSE("GPL"); |