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) | |
70 | new_flags |= FIF_CONTROL | | |
71 | FIF_OTHER_BSS | | |
72 | FIF_BCN_PRBRESP_PROMISC; | |
73 | ||
74 | changed_flags = local->filter_flags ^ new_flags; | |
75 | ||
76 | /* be a bit nasty */ | |
77 | new_flags |= (1<<31); | |
78 | ||
79 | local->ops->configure_filter(local_to_hw(local), | |
80 | changed_flags, &new_flags, | |
81 | local->mdev->mc_count, | |
82 | local->mdev->mc_list); | |
83 | ||
84 | WARN_ON(new_flags & (1<<31)); | |
85 | ||
86 | local->filter_flags = new_flags & ~(1<<31); | |
87 | } | |
88 | ||
b2c258fb | 89 | /* master interface */ |
f0706e82 | 90 | |
b2c258fb JB |
91 | static int ieee80211_master_open(struct net_device *dev) |
92 | { | |
93 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
94 | struct ieee80211_sub_if_data *sdata; | |
95 | int res = -EOPNOTSUPP; | |
f0706e82 | 96 | |
79010420 JB |
97 | /* we hold the RTNL here so can safely walk the list */ |
98 | list_for_each_entry(sdata, &local->interfaces, list) { | |
b2c258fb JB |
99 | if (sdata->dev != dev && netif_running(sdata->dev)) { |
100 | res = 0; | |
101 | break; | |
102 | } | |
103 | } | |
b2c258fb JB |
104 | return res; |
105 | } | |
f0706e82 | 106 | |
b2c258fb | 107 | static int ieee80211_master_stop(struct net_device *dev) |
f0706e82 | 108 | { |
b2c258fb JB |
109 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); |
110 | struct ieee80211_sub_if_data *sdata; | |
f0706e82 | 111 | |
79010420 JB |
112 | /* we hold the RTNL here so can safely walk the list */ |
113 | list_for_each_entry(sdata, &local->interfaces, list) | |
b2c258fb JB |
114 | if (sdata->dev != dev && netif_running(sdata->dev)) |
115 | dev_close(sdata->dev); | |
f0706e82 | 116 | |
b2c258fb JB |
117 | return 0; |
118 | } | |
f0706e82 | 119 | |
4150c572 JB |
120 | static void ieee80211_master_set_multicast_list(struct net_device *dev) |
121 | { | |
122 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
123 | ||
124 | ieee80211_configure_filter(local); | |
125 | } | |
126 | ||
b2c258fb | 127 | /* regular interfaces */ |
f0706e82 | 128 | |
b2c258fb | 129 | static int ieee80211_change_mtu(struct net_device *dev, int new_mtu) |
f0706e82 | 130 | { |
b2c258fb JB |
131 | /* FIX: what would be proper limits for MTU? |
132 | * This interface uses 802.3 frames. */ | |
133 | if (new_mtu < 256 || new_mtu > IEEE80211_MAX_DATA_LEN - 24 - 6) { | |
134 | printk(KERN_WARNING "%s: invalid MTU %d\n", | |
135 | dev->name, new_mtu); | |
136 | return -EINVAL; | |
137 | } | |
f0706e82 | 138 | |
b2c258fb JB |
139 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
140 | printk(KERN_DEBUG "%s: setting MTU %d\n", dev->name, new_mtu); | |
141 | #endif /* CONFIG_MAC80211_VERBOSE_DEBUG */ | |
142 | dev->mtu = new_mtu; | |
f0706e82 JB |
143 | return 0; |
144 | } | |
145 | ||
b2c258fb JB |
146 | static inline int identical_mac_addr_allowed(int type1, int type2) |
147 | { | |
148 | return (type1 == IEEE80211_IF_TYPE_MNTR || | |
149 | type2 == IEEE80211_IF_TYPE_MNTR || | |
150 | (type1 == IEEE80211_IF_TYPE_AP && | |
151 | type2 == IEEE80211_IF_TYPE_WDS) || | |
152 | (type1 == IEEE80211_IF_TYPE_WDS && | |
153 | (type2 == IEEE80211_IF_TYPE_WDS || | |
154 | type2 == IEEE80211_IF_TYPE_AP)) || | |
155 | (type1 == IEEE80211_IF_TYPE_AP && | |
156 | type2 == IEEE80211_IF_TYPE_VLAN) || | |
157 | (type1 == IEEE80211_IF_TYPE_VLAN && | |
158 | (type2 == IEEE80211_IF_TYPE_AP || | |
159 | type2 == IEEE80211_IF_TYPE_VLAN))); | |
160 | } | |
f0706e82 | 161 | |
b2c258fb | 162 | static int ieee80211_open(struct net_device *dev) |
e2ebc74d | 163 | { |
b2c258fb JB |
164 | struct ieee80211_sub_if_data *sdata, *nsdata; |
165 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
166 | struct ieee80211_if_init_conf conf; | |
167 | int res; | |
ceffefd1 | 168 | bool need_hw_reconfig = 0; |
f0706e82 | 169 | |
b2c258fb | 170 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
0ec3ca44 | 171 | |
79010420 JB |
172 | /* we hold the RTNL here so can safely walk the list */ |
173 | list_for_each_entry(nsdata, &local->interfaces, list) { | |
b2c258fb | 174 | struct net_device *ndev = nsdata->dev; |
e2ebc74d | 175 | |
b2c258fb | 176 | if (ndev != dev && ndev != local->mdev && netif_running(ndev) && |
0ec3ca44 JB |
177 | compare_ether_addr(dev->dev_addr, ndev->dev_addr) == 0) { |
178 | /* | |
179 | * check whether it may have the same address | |
180 | */ | |
51fb61e7 JB |
181 | if (!identical_mac_addr_allowed(sdata->vif.type, |
182 | nsdata->vif.type)) | |
0ec3ca44 | 183 | return -ENOTUNIQ; |
0ec3ca44 JB |
184 | |
185 | /* | |
186 | * can only add VLANs to enabled APs | |
187 | */ | |
51fb61e7 JB |
188 | if (sdata->vif.type == IEEE80211_IF_TYPE_VLAN && |
189 | nsdata->vif.type == IEEE80211_IF_TYPE_AP && | |
0ec3ca44 JB |
190 | netif_running(nsdata->dev)) |
191 | sdata->u.vlan.ap = nsdata; | |
b2c258fb JB |
192 | } |
193 | } | |
f0706e82 | 194 | |
51fb61e7 | 195 | switch (sdata->vif.type) { |
0ec3ca44 JB |
196 | case IEEE80211_IF_TYPE_WDS: |
197 | if (is_zero_ether_addr(sdata->u.wds.remote_addr)) | |
198 | return -ENOLINK; | |
199 | break; | |
200 | case IEEE80211_IF_TYPE_VLAN: | |
201 | if (!sdata->u.vlan.ap) | |
202 | return -ENOLINK; | |
203 | break; | |
fb1c1cd6 | 204 | case IEEE80211_IF_TYPE_AP: |
fb1c1cd6 JB |
205 | case IEEE80211_IF_TYPE_STA: |
206 | case IEEE80211_IF_TYPE_MNTR: | |
207 | case IEEE80211_IF_TYPE_IBSS: | |
208 | /* no special treatment */ | |
209 | break; | |
a2897552 JB |
210 | case IEEE80211_IF_TYPE_INVALID: |
211 | /* cannot happen */ | |
212 | WARN_ON(1); | |
213 | break; | |
0ec3ca44 | 214 | } |
f0706e82 | 215 | |
b2c258fb JB |
216 | if (local->open_count == 0) { |
217 | res = 0; | |
4150c572 JB |
218 | if (local->ops->start) |
219 | res = local->ops->start(local_to_hw(local)); | |
220 | if (res) | |
b2c258fb | 221 | return res; |
ceffefd1 | 222 | need_hw_reconfig = 1; |
cdcb006f | 223 | ieee80211_led_radio(local, local->hw.conf.radio_enabled); |
b2c258fb | 224 | } |
f0706e82 | 225 | |
51fb61e7 | 226 | switch (sdata->vif.type) { |
0ec3ca44 JB |
227 | case IEEE80211_IF_TYPE_VLAN: |
228 | list_add(&sdata->u.vlan.list, &sdata->u.vlan.ap->u.ap.vlans); | |
229 | /* no need to tell driver */ | |
230 | break; | |
4150c572 JB |
231 | case IEEE80211_IF_TYPE_MNTR: |
232 | /* must be before the call to ieee80211_configure_filter */ | |
b2c258fb | 233 | local->monitors++; |
4150c572 JB |
234 | if (local->monitors == 1) { |
235 | netif_tx_lock_bh(local->mdev); | |
236 | ieee80211_configure_filter(local); | |
237 | netif_tx_unlock_bh(local->mdev); | |
238 | ||
239 | local->hw.conf.flags |= IEEE80211_CONF_RADIOTAP; | |
4150c572 JB |
240 | } |
241 | break; | |
242 | case IEEE80211_IF_TYPE_STA: | |
243 | case IEEE80211_IF_TYPE_IBSS: | |
244 | sdata->u.sta.flags &= ~IEEE80211_STA_PREV_BSSID_SET; | |
245 | /* fall through */ | |
246 | default: | |
32bfd35d | 247 | conf.vif = &sdata->vif; |
51fb61e7 | 248 | conf.type = sdata->vif.type; |
4150c572 JB |
249 | conf.mac_addr = dev->dev_addr; |
250 | res = local->ops->add_interface(local_to_hw(local), &conf); | |
251 | if (res && !local->open_count && local->ops->stop) | |
252 | local->ops->stop(local_to_hw(local)); | |
253 | if (res) | |
254 | return res; | |
255 | ||
b2c258fb | 256 | ieee80211_if_config(dev); |
d9430a32 | 257 | ieee80211_reset_erp_info(dev); |
11a843b7 | 258 | ieee80211_enable_keys(sdata); |
4150c572 | 259 | |
51fb61e7 | 260 | if (sdata->vif.type == IEEE80211_IF_TYPE_STA && |
ddd3d2be | 261 | !(sdata->flags & IEEE80211_SDATA_USERSPACE_MLME)) |
4150c572 JB |
262 | netif_carrier_off(dev); |
263 | else | |
264 | netif_carrier_on(dev); | |
d9430a32 | 265 | } |
f0706e82 | 266 | |
4150c572 JB |
267 | if (local->open_count == 0) { |
268 | res = dev_open(local->mdev); | |
269 | WARN_ON(res); | |
4150c572 JB |
270 | tasklet_enable(&local->tx_pending_tasklet); |
271 | tasklet_enable(&local->tasklet); | |
272 | } | |
273 | ||
c1428b3f JB |
274 | /* |
275 | * set_multicast_list will be invoked by the networking core | |
276 | * which will check whether any increments here were done in | |
277 | * error and sync them down to the hardware as filter flags. | |
278 | */ | |
279 | if (sdata->flags & IEEE80211_SDATA_ALLMULTI) | |
280 | atomic_inc(&local->iff_allmultis); | |
281 | ||
282 | if (sdata->flags & IEEE80211_SDATA_PROMISC) | |
283 | atomic_inc(&local->iff_promiscs); | |
284 | ||
4150c572 | 285 | local->open_count++; |
ceffefd1 MB |
286 | if (need_hw_reconfig) |
287 | ieee80211_hw_config(local); | |
f0706e82 | 288 | |
b2c258fb | 289 | netif_start_queue(dev); |
4150c572 | 290 | |
b2c258fb | 291 | return 0; |
f0706e82 | 292 | } |
f0706e82 | 293 | |
4150c572 | 294 | static int ieee80211_stop(struct net_device *dev) |
f0706e82 | 295 | { |
4150c572 | 296 | struct ieee80211_sub_if_data *sdata; |
f0706e82 | 297 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); |
4150c572 | 298 | struct ieee80211_if_init_conf conf; |
07db2183 RR |
299 | struct sta_info *sta; |
300 | int i; | |
4150c572 JB |
301 | |
302 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
303 | ||
07db2183 | 304 | list_for_each_entry(sta, &local->sta_list, list) { |
5b3d71d9 RR |
305 | if (sta->dev == dev) |
306 | for (i = 0; i < STA_TID_NUM; i++) | |
307 | ieee80211_sta_stop_rx_ba_session(sta->dev, | |
308 | sta->addr, i, | |
309 | WLAN_BACK_RECIPIENT, | |
07db2183 RR |
310 | WLAN_REASON_QSTA_LEAVE_QBSS); |
311 | } | |
312 | ||
4150c572 JB |
313 | netif_stop_queue(dev); |
314 | ||
c1428b3f JB |
315 | /* |
316 | * Don't count this interface for promisc/allmulti while it | |
317 | * is down. dev_mc_unsync() will invoke set_multicast_list | |
318 | * on the master interface which will sync these down to the | |
319 | * hardware as filter flags. | |
320 | */ | |
321 | if (sdata->flags & IEEE80211_SDATA_ALLMULTI) | |
322 | atomic_dec(&local->iff_allmultis); | |
323 | ||
324 | if (sdata->flags & IEEE80211_SDATA_PROMISC) | |
325 | atomic_dec(&local->iff_promiscs); | |
326 | ||
4150c572 JB |
327 | dev_mc_unsync(local->mdev, dev); |
328 | ||
5dfdaf58 | 329 | /* APs need special treatment */ |
51fb61e7 | 330 | if (sdata->vif.type == IEEE80211_IF_TYPE_AP) { |
0ec3ca44 | 331 | struct ieee80211_sub_if_data *vlan, *tmp; |
5dfdaf58 | 332 | struct beacon_data *old_beacon = sdata->u.ap.beacon; |
0ec3ca44 | 333 | |
5dfdaf58 JB |
334 | /* remove beacon */ |
335 | rcu_assign_pointer(sdata->u.ap.beacon, NULL); | |
336 | synchronize_rcu(); | |
337 | kfree(old_beacon); | |
338 | ||
339 | /* down all dependent devices, that is VLANs */ | |
0ec3ca44 JB |
340 | list_for_each_entry_safe(vlan, tmp, &sdata->u.ap.vlans, |
341 | u.vlan.list) | |
342 | dev_close(vlan->dev); | |
343 | WARN_ON(!list_empty(&sdata->u.ap.vlans)); | |
344 | } | |
345 | ||
4150c572 | 346 | local->open_count--; |
f0706e82 | 347 | |
51fb61e7 | 348 | switch (sdata->vif.type) { |
0ec3ca44 JB |
349 | case IEEE80211_IF_TYPE_VLAN: |
350 | list_del(&sdata->u.vlan.list); | |
351 | sdata->u.vlan.ap = NULL; | |
352 | /* no need to tell driver */ | |
353 | break; | |
4150c572 JB |
354 | case IEEE80211_IF_TYPE_MNTR: |
355 | local->monitors--; | |
356 | if (local->monitors == 0) { | |
357 | netif_tx_lock_bh(local->mdev); | |
358 | ieee80211_configure_filter(local); | |
359 | netif_tx_unlock_bh(local->mdev); | |
360 | ||
8b393f1d | 361 | local->hw.conf.flags &= ~IEEE80211_CONF_RADIOTAP; |
4150c572 JB |
362 | } |
363 | break; | |
b2c258fb JB |
364 | case IEEE80211_IF_TYPE_STA: |
365 | case IEEE80211_IF_TYPE_IBSS: | |
366 | sdata->u.sta.state = IEEE80211_DISABLED; | |
367 | del_timer_sync(&sdata->u.sta.timer); | |
2a8a9a88 | 368 | /* |
79010420 JB |
369 | * When we get here, the interface is marked down. |
370 | * Call synchronize_rcu() to wait for the RX path | |
371 | * should it be using the interface and enqueuing | |
372 | * frames at this very time on another CPU. | |
2a8a9a88 | 373 | */ |
79010420 | 374 | synchronize_rcu(); |
b2c258fb | 375 | skb_queue_purge(&sdata->u.sta.skb_queue); |
2a8a9a88 | 376 | |
ece8eddd ZY |
377 | if (local->scan_dev == sdata->dev) { |
378 | if (!local->ops->hw_scan) { | |
379 | local->sta_sw_scanning = 0; | |
380 | cancel_delayed_work(&local->scan_work); | |
381 | } else | |
382 | local->sta_hw_scanning = 0; | |
b2c258fb | 383 | } |
ece8eddd | 384 | |
b2c258fb | 385 | flush_workqueue(local->hw.workqueue); |
a10605e5 ZY |
386 | |
387 | sdata->u.sta.flags &= ~IEEE80211_STA_PRIVACY_INVOKED; | |
388 | kfree(sdata->u.sta.extra_ie); | |
389 | sdata->u.sta.extra_ie = NULL; | |
390 | sdata->u.sta.extra_ie_len = 0; | |
4150c572 JB |
391 | /* fall through */ |
392 | default: | |
32bfd35d | 393 | conf.vif = &sdata->vif; |
51fb61e7 | 394 | conf.type = sdata->vif.type; |
4150c572 | 395 | conf.mac_addr = dev->dev_addr; |
11a843b7 JB |
396 | /* disable all keys for as long as this netdev is down */ |
397 | ieee80211_disable_keys(sdata); | |
4150c572 | 398 | local->ops->remove_interface(local_to_hw(local), &conf); |
f0706e82 JB |
399 | } |
400 | ||
b2c258fb JB |
401 | if (local->open_count == 0) { |
402 | if (netif_running(local->mdev)) | |
403 | dev_close(local->mdev); | |
4150c572 | 404 | |
b2c258fb JB |
405 | if (local->ops->stop) |
406 | local->ops->stop(local_to_hw(local)); | |
4150c572 | 407 | |
cdcb006f ID |
408 | ieee80211_led_radio(local, 0); |
409 | ||
b2c258fb JB |
410 | tasklet_disable(&local->tx_pending_tasklet); |
411 | tasklet_disable(&local->tasklet); | |
412 | } | |
b2c258fb | 413 | |
f0706e82 JB |
414 | return 0; |
415 | } | |
416 | ||
eadc8d9e RR |
417 | int ieee80211_start_tx_ba_session(struct ieee80211_hw *hw, u8 *ra, u16 tid) |
418 | { | |
419 | struct ieee80211_local *local = hw_to_local(hw); | |
420 | struct sta_info *sta; | |
421 | struct ieee80211_sub_if_data *sdata; | |
422 | u16 start_seq_num = 0; | |
423 | u8 *state; | |
424 | int ret; | |
425 | DECLARE_MAC_BUF(mac); | |
426 | ||
427 | if (tid >= STA_TID_NUM) | |
428 | return -EINVAL; | |
429 | ||
430 | #ifdef CONFIG_MAC80211_HT_DEBUG | |
431 | printk(KERN_DEBUG "Open BA session requested for %s tid %u\n", | |
432 | print_mac(mac, ra), tid); | |
433 | #endif /* CONFIG_MAC80211_HT_DEBUG */ | |
434 | ||
435 | sta = sta_info_get(local, ra); | |
436 | if (!sta) { | |
437 | printk(KERN_DEBUG "Could not find the station\n"); | |
438 | return -ENOENT; | |
439 | } | |
440 | ||
441 | spin_lock_bh(&sta->ampdu_mlme.ampdu_tx); | |
442 | ||
443 | /* we have tried too many times, receiver does not want A-MPDU */ | |
444 | if (sta->ampdu_mlme.tid_tx[tid].addba_req_num > HT_AGG_MAX_RETRIES) { | |
445 | ret = -EBUSY; | |
446 | goto start_ba_exit; | |
447 | } | |
448 | ||
449 | state = &sta->ampdu_mlme.tid_tx[tid].state; | |
450 | /* check if the TID is not in aggregation flow already */ | |
451 | if (*state != HT_AGG_STATE_IDLE) { | |
452 | #ifdef CONFIG_MAC80211_HT_DEBUG | |
453 | printk(KERN_DEBUG "BA request denied - session is not " | |
454 | "idle on tid %u\n", tid); | |
455 | #endif /* CONFIG_MAC80211_HT_DEBUG */ | |
456 | ret = -EAGAIN; | |
457 | goto start_ba_exit; | |
458 | } | |
459 | ||
460 | /* ensure that TX flow won't interrupt us | |
461 | * until the end of the call to requeue function */ | |
462 | spin_lock_bh(&local->mdev->queue_lock); | |
463 | ||
464 | /* create a new queue for this aggregation */ | |
465 | /* ret = ieee80211_ht_agg_queue_add(local, sta, tid); */ | |
466 | ||
467 | /* case no queue is available to aggregation | |
468 | * don't switch to aggregation */ | |
469 | if (ret) { | |
470 | #ifdef CONFIG_MAC80211_HT_DEBUG | |
471 | printk(KERN_DEBUG "BA request denied - no queue available for" | |
472 | " tid %d\n", tid); | |
473 | #endif /* CONFIG_MAC80211_HT_DEBUG */ | |
474 | spin_unlock_bh(&local->mdev->queue_lock); | |
475 | goto start_ba_exit; | |
476 | } | |
477 | sdata = IEEE80211_DEV_TO_SUB_IF(sta->dev); | |
478 | ||
479 | /* Ok, the Addba frame hasn't been sent yet, but if the driver calls the | |
480 | * call back right away, it must see that the flow has begun */ | |
481 | *state |= HT_ADDBA_REQUESTED_MSK; | |
482 | ||
483 | if (local->ops->ampdu_action) | |
484 | ret = local->ops->ampdu_action(hw, IEEE80211_AMPDU_TX_START, | |
485 | ra, tid, &start_seq_num); | |
486 | ||
487 | if (ret) { | |
488 | /* No need to requeue the packets in the agg queue, since we | |
489 | * held the tx lock: no packet could be enqueued to the newly | |
490 | * allocated queue */ | |
491 | /* ieee80211_ht_agg_queue_remove(local, sta, tid, 0); */ | |
492 | #ifdef CONFIG_MAC80211_HT_DEBUG | |
493 | printk(KERN_DEBUG "BA request denied - HW or queue unavailable" | |
494 | " for tid %d\n", tid); | |
495 | #endif /* CONFIG_MAC80211_HT_DEBUG */ | |
496 | spin_unlock_bh(&local->mdev->queue_lock); | |
497 | *state = HT_AGG_STATE_IDLE; | |
498 | goto start_ba_exit; | |
499 | } | |
500 | ||
501 | /* Will put all the packets in the new SW queue */ | |
502 | /* ieee80211_requeue(local, ieee802_1d_to_ac[tid]); */ | |
503 | spin_unlock_bh(&local->mdev->queue_lock); | |
504 | ||
505 | /* We have most probably almost emptied the legacy queue */ | |
506 | /* ieee80211_wake_queue(local_to_hw(local), ieee802_1d_to_ac[tid]); */ | |
507 | ||
508 | /* send an addBA request */ | |
509 | sta->ampdu_mlme.dialog_token_allocator++; | |
510 | sta->ampdu_mlme.tid_tx[tid].dialog_token = | |
511 | sta->ampdu_mlme.dialog_token_allocator; | |
512 | sta->ampdu_mlme.tid_tx[tid].ssn = start_seq_num; | |
513 | ||
514 | ieee80211_send_addba_request(sta->dev, ra, tid, | |
515 | sta->ampdu_mlme.tid_tx[tid].dialog_token, | |
516 | sta->ampdu_mlme.tid_tx[tid].ssn, | |
517 | 0x40, 5000); | |
518 | ||
519 | /* activate the timer for the recipient's addBA response */ | |
520 | sta->ampdu_mlme.tid_tx[tid].addba_resp_timer.expires = | |
521 | jiffies + ADDBA_RESP_INTERVAL; | |
522 | add_timer(&sta->ampdu_mlme.tid_tx[tid].addba_resp_timer); | |
523 | printk(KERN_DEBUG "activated addBA response timer on tid %d\n", tid); | |
524 | ||
525 | start_ba_exit: | |
526 | spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx); | |
527 | sta_info_put(sta); | |
528 | return ret; | |
529 | } | |
530 | EXPORT_SYMBOL(ieee80211_start_tx_ba_session); | |
531 | ||
532 | int ieee80211_stop_tx_ba_session(struct ieee80211_hw *hw, | |
533 | u8 *ra, u16 tid, | |
534 | enum ieee80211_back_parties initiator) | |
535 | { | |
536 | struct ieee80211_local *local = hw_to_local(hw); | |
537 | struct sta_info *sta; | |
538 | u8 *state; | |
539 | int ret = 0; | |
540 | DECLARE_MAC_BUF(mac); | |
541 | ||
542 | if (tid >= STA_TID_NUM) | |
543 | return -EINVAL; | |
544 | ||
545 | #ifdef CONFIG_MAC80211_HT_DEBUG | |
546 | printk(KERN_DEBUG "Stop a BA session requested for %s tid %u\n", | |
547 | print_mac(mac, ra), tid); | |
548 | #endif /* CONFIG_MAC80211_HT_DEBUG */ | |
549 | ||
550 | sta = sta_info_get(local, ra); | |
551 | if (!sta) | |
552 | return -ENOENT; | |
553 | ||
554 | /* check if the TID is in aggregation */ | |
555 | state = &sta->ampdu_mlme.tid_tx[tid].state; | |
556 | spin_lock_bh(&sta->ampdu_mlme.ampdu_tx); | |
557 | ||
558 | if (*state != HT_AGG_STATE_OPERATIONAL) { | |
559 | #ifdef CONFIG_MAC80211_HT_DEBUG | |
560 | printk(KERN_DEBUG "Try to stop Tx aggregation on" | |
561 | " non active TID\n"); | |
562 | #endif /* CONFIG_MAC80211_HT_DEBUG */ | |
563 | ret = -ENOENT; | |
564 | goto stop_BA_exit; | |
565 | } | |
566 | ||
567 | ieee80211_stop_queue(hw, sta->tid_to_tx_q[tid]); | |
568 | ||
569 | *state = HT_AGG_STATE_REQ_STOP_BA_MSK | | |
570 | (initiator << HT_AGG_STATE_INITIATOR_SHIFT); | |
571 | ||
572 | if (local->ops->ampdu_action) | |
573 | ret = local->ops->ampdu_action(hw, IEEE80211_AMPDU_TX_STOP, | |
574 | ra, tid, NULL); | |
575 | ||
576 | /* case HW denied going back to legacy */ | |
577 | if (ret) { | |
578 | WARN_ON(ret != -EBUSY); | |
579 | *state = HT_AGG_STATE_OPERATIONAL; | |
580 | ieee80211_wake_queue(hw, sta->tid_to_tx_q[tid]); | |
581 | goto stop_BA_exit; | |
582 | } | |
583 | ||
584 | stop_BA_exit: | |
585 | spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx); | |
586 | sta_info_put(sta); | |
587 | return ret; | |
588 | } | |
589 | EXPORT_SYMBOL(ieee80211_stop_tx_ba_session); | |
590 | ||
591 | void ieee80211_start_tx_ba_cb(struct ieee80211_hw *hw, u8 *ra, u16 tid) | |
592 | { | |
593 | struct ieee80211_local *local = hw_to_local(hw); | |
594 | struct sta_info *sta; | |
595 | u8 *state; | |
596 | DECLARE_MAC_BUF(mac); | |
597 | ||
598 | if (tid >= STA_TID_NUM) { | |
599 | printk(KERN_DEBUG "Bad TID value: tid = %d (>= %d)\n", | |
600 | tid, STA_TID_NUM); | |
601 | return; | |
602 | } | |
603 | ||
604 | sta = sta_info_get(local, ra); | |
605 | if (!sta) { | |
606 | printk(KERN_DEBUG "Could not find station: %s\n", | |
607 | print_mac(mac, ra)); | |
608 | return; | |
609 | } | |
610 | ||
611 | state = &sta->ampdu_mlme.tid_tx[tid].state; | |
612 | spin_lock_bh(&sta->ampdu_mlme.ampdu_tx); | |
613 | ||
614 | if (!(*state & HT_ADDBA_REQUESTED_MSK)) { | |
615 | printk(KERN_DEBUG "addBA was not requested yet, state is %d\n", | |
616 | *state); | |
617 | spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx); | |
618 | sta_info_put(sta); | |
619 | return; | |
620 | } | |
621 | ||
622 | WARN_ON_ONCE(*state & HT_ADDBA_DRV_READY_MSK); | |
623 | ||
624 | *state |= HT_ADDBA_DRV_READY_MSK; | |
625 | ||
626 | if (*state == HT_AGG_STATE_OPERATIONAL) { | |
627 | printk(KERN_DEBUG "Aggregation is on for tid %d \n", tid); | |
628 | ieee80211_wake_queue(hw, sta->tid_to_tx_q[tid]); | |
629 | } | |
630 | spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx); | |
631 | sta_info_put(sta); | |
632 | } | |
633 | EXPORT_SYMBOL(ieee80211_start_tx_ba_cb); | |
634 | ||
635 | void ieee80211_stop_tx_ba_cb(struct ieee80211_hw *hw, u8 *ra, u8 tid) | |
636 | { | |
637 | struct ieee80211_local *local = hw_to_local(hw); | |
638 | struct sta_info *sta; | |
639 | u8 *state; | |
640 | int agg_queue; | |
641 | DECLARE_MAC_BUF(mac); | |
642 | ||
643 | if (tid >= STA_TID_NUM) { | |
644 | printk(KERN_DEBUG "Bad TID value: tid = %d (>= %d)\n", | |
645 | tid, STA_TID_NUM); | |
646 | return; | |
647 | } | |
648 | ||
649 | printk(KERN_DEBUG "Stop a BA session requested on DA %s tid %d\n", | |
650 | print_mac(mac, ra), tid); | |
651 | ||
652 | sta = sta_info_get(local, ra); | |
653 | if (!sta) { | |
654 | printk(KERN_DEBUG "Could not find station: %s\n", | |
655 | print_mac(mac, ra)); | |
656 | return; | |
657 | } | |
658 | state = &sta->ampdu_mlme.tid_tx[tid].state; | |
659 | ||
660 | spin_lock_bh(&sta->ampdu_mlme.ampdu_tx); | |
661 | if ((*state & HT_AGG_STATE_REQ_STOP_BA_MSK) == 0) { | |
662 | printk(KERN_DEBUG "unexpected callback to A-MPDU stop\n"); | |
663 | sta_info_put(sta); | |
664 | spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx); | |
665 | return; | |
666 | } | |
667 | ||
668 | if (*state & HT_AGG_STATE_INITIATOR_MSK) | |
669 | ieee80211_send_delba(sta->dev, ra, tid, | |
670 | WLAN_BACK_INITIATOR, WLAN_REASON_QSTA_NOT_USE); | |
671 | ||
672 | agg_queue = sta->tid_to_tx_q[tid]; | |
673 | ||
674 | /* avoid ordering issues: we are the only one that can modify | |
675 | * the content of the qdiscs */ | |
676 | spin_lock_bh(&local->mdev->queue_lock); | |
677 | /* remove the queue for this aggregation */ | |
678 | /* ieee80211_ht_agg_queue_remove(local, sta, tid, 1); */ | |
679 | spin_unlock_bh(&local->mdev->queue_lock); | |
680 | ||
681 | /* we just requeued the all the frames that were in the removed | |
682 | * queue, and since we might miss a softirq we do netif_schedule. | |
683 | * ieee80211_wake_queue is not used here as this queue is not | |
684 | * necessarily stopped */ | |
685 | netif_schedule(local->mdev); | |
686 | *state = HT_AGG_STATE_IDLE; | |
687 | sta->ampdu_mlme.tid_tx[tid].addba_req_num = 0; | |
688 | spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx); | |
689 | ||
690 | sta_info_put(sta); | |
691 | } | |
692 | EXPORT_SYMBOL(ieee80211_stop_tx_ba_cb); | |
693 | ||
694 | void ieee80211_start_tx_ba_cb_irqsafe(struct ieee80211_hw *hw, | |
695 | const u8 *ra, u16 tid) | |
696 | { | |
697 | struct ieee80211_local *local = hw_to_local(hw); | |
698 | struct ieee80211_ra_tid *ra_tid; | |
699 | struct sk_buff *skb = dev_alloc_skb(0); | |
700 | ||
701 | if (unlikely(!skb)) { | |
702 | if (net_ratelimit()) | |
703 | printk(KERN_WARNING "%s: Not enough memory, " | |
704 | "dropping start BA session", skb->dev->name); | |
705 | return; | |
706 | } | |
707 | ra_tid = (struct ieee80211_ra_tid *) &skb->cb; | |
708 | memcpy(&ra_tid->ra, ra, ETH_ALEN); | |
709 | ra_tid->tid = tid; | |
710 | ||
711 | skb->pkt_type = IEEE80211_ADDBA_MSG; | |
712 | skb_queue_tail(&local->skb_queue, skb); | |
713 | tasklet_schedule(&local->tasklet); | |
714 | } | |
715 | EXPORT_SYMBOL(ieee80211_start_tx_ba_cb_irqsafe); | |
716 | ||
717 | void ieee80211_stop_tx_ba_cb_irqsafe(struct ieee80211_hw *hw, | |
718 | const u8 *ra, u16 tid) | |
719 | { | |
720 | struct ieee80211_local *local = hw_to_local(hw); | |
721 | struct ieee80211_ra_tid *ra_tid; | |
722 | struct sk_buff *skb = dev_alloc_skb(0); | |
723 | ||
724 | if (unlikely(!skb)) { | |
725 | if (net_ratelimit()) | |
726 | printk(KERN_WARNING "%s: Not enough memory, " | |
727 | "dropping stop BA session", skb->dev->name); | |
728 | return; | |
729 | } | |
730 | ra_tid = (struct ieee80211_ra_tid *) &skb->cb; | |
731 | memcpy(&ra_tid->ra, ra, ETH_ALEN); | |
732 | ra_tid->tid = tid; | |
733 | ||
734 | skb->pkt_type = IEEE80211_DELBA_MSG; | |
735 | skb_queue_tail(&local->skb_queue, skb); | |
736 | tasklet_schedule(&local->tasklet); | |
737 | } | |
738 | EXPORT_SYMBOL(ieee80211_stop_tx_ba_cb_irqsafe); | |
739 | ||
f0706e82 JB |
740 | static void ieee80211_set_multicast_list(struct net_device *dev) |
741 | { | |
742 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
743 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
4150c572 | 744 | int allmulti, promisc, sdata_allmulti, sdata_promisc; |
f0706e82 | 745 | |
4150c572 JB |
746 | allmulti = !!(dev->flags & IFF_ALLMULTI); |
747 | promisc = !!(dev->flags & IFF_PROMISC); | |
b52f2198 JB |
748 | sdata_allmulti = !!(sdata->flags & IEEE80211_SDATA_ALLMULTI); |
749 | sdata_promisc = !!(sdata->flags & IEEE80211_SDATA_PROMISC); | |
4150c572 JB |
750 | |
751 | if (allmulti != sdata_allmulti) { | |
752 | if (dev->flags & IFF_ALLMULTI) | |
53918994 | 753 | atomic_inc(&local->iff_allmultis); |
4150c572 | 754 | else |
53918994 | 755 | atomic_dec(&local->iff_allmultis); |
13262ffd | 756 | sdata->flags ^= IEEE80211_SDATA_ALLMULTI; |
f0706e82 | 757 | } |
4150c572 JB |
758 | |
759 | if (promisc != sdata_promisc) { | |
760 | if (dev->flags & IFF_PROMISC) | |
53918994 | 761 | atomic_inc(&local->iff_promiscs); |
4150c572 | 762 | else |
53918994 | 763 | atomic_dec(&local->iff_promiscs); |
13262ffd | 764 | sdata->flags ^= IEEE80211_SDATA_PROMISC; |
f0706e82 | 765 | } |
4150c572 JB |
766 | |
767 | dev_mc_sync(local->mdev, dev); | |
f0706e82 JB |
768 | } |
769 | ||
3b04ddde SH |
770 | static const struct header_ops ieee80211_header_ops = { |
771 | .create = eth_header, | |
772 | .parse = header_parse_80211, | |
773 | .rebuild = eth_rebuild_header, | |
774 | .cache = eth_header_cache, | |
775 | .cache_update = eth_header_cache_update, | |
776 | }; | |
777 | ||
f9d540ee | 778 | /* Must not be called for mdev */ |
b2c258fb | 779 | void ieee80211_if_setup(struct net_device *dev) |
f0706e82 | 780 | { |
b2c258fb JB |
781 | ether_setup(dev); |
782 | dev->hard_start_xmit = ieee80211_subif_start_xmit; | |
783 | dev->wireless_handlers = &ieee80211_iw_handler_def; | |
784 | dev->set_multicast_list = ieee80211_set_multicast_list; | |
785 | dev->change_mtu = ieee80211_change_mtu; | |
b2c258fb JB |
786 | dev->open = ieee80211_open; |
787 | dev->stop = ieee80211_stop; | |
b2c258fb JB |
788 | dev->destructor = ieee80211_if_free; |
789 | } | |
f0706e82 | 790 | |
b2c258fb JB |
791 | /* WDS specialties */ |
792 | ||
793 | int ieee80211_if_update_wds(struct net_device *dev, u8 *remote_addr) | |
794 | { | |
795 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
796 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
797 | struct sta_info *sta; | |
0795af57 | 798 | DECLARE_MAC_BUF(mac); |
b2c258fb JB |
799 | |
800 | if (compare_ether_addr(remote_addr, sdata->u.wds.remote_addr) == 0) | |
801 | return 0; | |
802 | ||
803 | /* Create STA entry for the new peer */ | |
804 | sta = sta_info_add(local, dev, remote_addr, GFP_KERNEL); | |
805 | if (!sta) | |
806 | return -ENOMEM; | |
807 | sta_info_put(sta); | |
808 | ||
809 | /* Remove STA entry for the old peer */ | |
810 | sta = sta_info_get(local, sdata->u.wds.remote_addr); | |
811 | if (sta) { | |
be8755e1 | 812 | sta_info_free(sta); |
b2c258fb | 813 | sta_info_put(sta); |
b2c258fb JB |
814 | } else { |
815 | printk(KERN_DEBUG "%s: could not find STA entry for WDS link " | |
0795af57 JP |
816 | "peer %s\n", |
817 | dev->name, print_mac(mac, sdata->u.wds.remote_addr)); | |
b2c258fb JB |
818 | } |
819 | ||
820 | /* Update WDS link data */ | |
821 | memcpy(&sdata->u.wds.remote_addr, remote_addr, ETH_ALEN); | |
822 | ||
823 | return 0; | |
f0706e82 | 824 | } |
f0706e82 | 825 | |
b2c258fb JB |
826 | /* everything else */ |
827 | ||
b2c258fb JB |
828 | static int __ieee80211_if_config(struct net_device *dev, |
829 | struct sk_buff *beacon, | |
830 | struct ieee80211_tx_control *control) | |
831 | { | |
832 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
833 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
834 | struct ieee80211_if_conf conf; | |
b2c258fb JB |
835 | |
836 | if (!local->ops->config_interface || !netif_running(dev)) | |
f0706e82 | 837 | return 0; |
f0706e82 | 838 | |
b2c258fb | 839 | memset(&conf, 0, sizeof(conf)); |
51fb61e7 JB |
840 | conf.type = sdata->vif.type; |
841 | if (sdata->vif.type == IEEE80211_IF_TYPE_STA || | |
842 | sdata->vif.type == IEEE80211_IF_TYPE_IBSS) { | |
4150c572 | 843 | conf.bssid = sdata->u.sta.bssid; |
b2c258fb JB |
844 | conf.ssid = sdata->u.sta.ssid; |
845 | conf.ssid_len = sdata->u.sta.ssid_len; | |
51fb61e7 | 846 | } else if (sdata->vif.type == IEEE80211_IF_TYPE_AP) { |
b2c258fb JB |
847 | conf.ssid = sdata->u.ap.ssid; |
848 | conf.ssid_len = sdata->u.ap.ssid_len; | |
b2c258fb JB |
849 | conf.beacon = beacon; |
850 | conf.beacon_control = control; | |
f0706e82 | 851 | } |
b2c258fb | 852 | return local->ops->config_interface(local_to_hw(local), |
32bfd35d | 853 | &sdata->vif, &conf); |
f0706e82 JB |
854 | } |
855 | ||
b2c258fb JB |
856 | int ieee80211_if_config(struct net_device *dev) |
857 | { | |
858 | return __ieee80211_if_config(dev, NULL, NULL); | |
859 | } | |
f0706e82 | 860 | |
b2c258fb | 861 | int ieee80211_if_config_beacon(struct net_device *dev) |
f0706e82 | 862 | { |
f0706e82 | 863 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); |
b2c258fb | 864 | struct ieee80211_tx_control control; |
32bfd35d | 865 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
b2c258fb | 866 | struct sk_buff *skb; |
f0706e82 | 867 | |
b2c258fb | 868 | if (!(local->hw.flags & IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE)) |
f0706e82 | 869 | return 0; |
32bfd35d JB |
870 | skb = ieee80211_beacon_get(local_to_hw(local), &sdata->vif, |
871 | &control); | |
b2c258fb JB |
872 | if (!skb) |
873 | return -ENOMEM; | |
874 | return __ieee80211_if_config(dev, skb, &control); | |
875 | } | |
f0706e82 | 876 | |
b2c258fb JB |
877 | int ieee80211_hw_config(struct ieee80211_local *local) |
878 | { | |
879 | struct ieee80211_hw_mode *mode; | |
880 | struct ieee80211_channel *chan; | |
881 | int ret = 0; | |
f0706e82 | 882 | |
ece8eddd | 883 | if (local->sta_sw_scanning) { |
b2c258fb JB |
884 | chan = local->scan_channel; |
885 | mode = local->scan_hw_mode; | |
886 | } else { | |
887 | chan = local->oper_channel; | |
888 | mode = local->oper_hw_mode; | |
f0706e82 JB |
889 | } |
890 | ||
b2c258fb JB |
891 | local->hw.conf.channel = chan->chan; |
892 | local->hw.conf.channel_val = chan->val; | |
61609bc0 MB |
893 | if (!local->hw.conf.power_level) { |
894 | local->hw.conf.power_level = chan->power_level; | |
895 | } else { | |
896 | local->hw.conf.power_level = min(chan->power_level, | |
897 | local->hw.conf.power_level); | |
898 | } | |
b2c258fb JB |
899 | local->hw.conf.freq = chan->freq; |
900 | local->hw.conf.phymode = mode->mode; | |
901 | local->hw.conf.antenna_max = chan->antenna_max; | |
902 | local->hw.conf.chan = chan; | |
903 | local->hw.conf.mode = mode; | |
f0706e82 | 904 | |
b2c258fb JB |
905 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
906 | printk(KERN_DEBUG "HW CONFIG: channel=%d freq=%d " | |
907 | "phymode=%d\n", local->hw.conf.channel, local->hw.conf.freq, | |
908 | local->hw.conf.phymode); | |
909 | #endif /* CONFIG_MAC80211_VERBOSE_DEBUG */ | |
910 | ||
f7c4daed | 911 | if (local->open_count) |
b2c258fb | 912 | ret = local->ops->config(local_to_hw(local), &local->hw.conf); |
f0706e82 | 913 | |
b2c258fb JB |
914 | return ret; |
915 | } | |
f0706e82 | 916 | |
d3c990fb RR |
917 | /** |
918 | * ieee80211_hw_config_ht should be used only after legacy configuration | |
919 | * has been determined, as ht configuration depends upon the hardware's | |
920 | * HT abilities for a _specific_ band. | |
921 | */ | |
922 | int ieee80211_hw_config_ht(struct ieee80211_local *local, int enable_ht, | |
923 | struct ieee80211_ht_info *req_ht_cap, | |
924 | struct ieee80211_ht_bss_info *req_bss_cap) | |
925 | { | |
926 | struct ieee80211_conf *conf = &local->hw.conf; | |
927 | struct ieee80211_hw_mode *mode = conf->mode; | |
928 | int i; | |
929 | ||
930 | /* HT is not supported */ | |
931 | if (!mode->ht_info.ht_supported) { | |
932 | conf->flags &= ~IEEE80211_CONF_SUPPORT_HT_MODE; | |
933 | return -EOPNOTSUPP; | |
934 | } | |
935 | ||
936 | /* disable HT */ | |
937 | if (!enable_ht) { | |
938 | conf->flags &= ~IEEE80211_CONF_SUPPORT_HT_MODE; | |
939 | } else { | |
940 | conf->flags |= IEEE80211_CONF_SUPPORT_HT_MODE; | |
941 | conf->ht_conf.cap = req_ht_cap->cap & mode->ht_info.cap; | |
942 | conf->ht_conf.cap &= ~(IEEE80211_HT_CAP_MIMO_PS); | |
943 | conf->ht_conf.cap |= | |
944 | mode->ht_info.cap & IEEE80211_HT_CAP_MIMO_PS; | |
945 | conf->ht_bss_conf.primary_channel = | |
946 | req_bss_cap->primary_channel; | |
947 | conf->ht_bss_conf.bss_cap = req_bss_cap->bss_cap; | |
948 | conf->ht_bss_conf.bss_op_mode = req_bss_cap->bss_op_mode; | |
949 | for (i = 0; i < SUPP_MCS_SET_LEN; i++) | |
950 | conf->ht_conf.supp_mcs_set[i] = | |
951 | mode->ht_info.supp_mcs_set[i] & | |
952 | req_ht_cap->supp_mcs_set[i]; | |
953 | ||
954 | /* In STA mode, this gives us indication | |
955 | * to the AP's mode of operation */ | |
956 | conf->ht_conf.ht_supported = 1; | |
957 | conf->ht_conf.ampdu_factor = req_ht_cap->ampdu_factor; | |
958 | conf->ht_conf.ampdu_density = req_ht_cap->ampdu_density; | |
959 | } | |
960 | ||
961 | local->ops->conf_ht(local_to_hw(local), &local->hw.conf); | |
962 | ||
963 | return 0; | |
964 | } | |
965 | ||
471b3efd JB |
966 | void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, |
967 | u32 changed) | |
d9430a32 | 968 | { |
471b3efd JB |
969 | struct ieee80211_local *local = sdata->local; |
970 | ||
971 | if (!changed) | |
972 | return; | |
973 | ||
974 | if (local->ops->bss_info_changed) | |
975 | local->ops->bss_info_changed(local_to_hw(local), | |
976 | &sdata->vif, | |
977 | &sdata->bss_conf, | |
978 | changed); | |
d9430a32 DD |
979 | } |
980 | ||
981 | void ieee80211_reset_erp_info(struct net_device *dev) | |
982 | { | |
983 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
984 | ||
471b3efd JB |
985 | sdata->bss_conf.use_cts_prot = 0; |
986 | sdata->bss_conf.use_short_preamble = 0; | |
987 | ieee80211_bss_info_change_notify(sdata, | |
988 | BSS_CHANGED_ERP_CTS_PROT | | |
989 | BSS_CHANGED_ERP_PREAMBLE); | |
d9430a32 DD |
990 | } |
991 | ||
f0706e82 JB |
992 | void ieee80211_tx_status_irqsafe(struct ieee80211_hw *hw, |
993 | struct sk_buff *skb, | |
994 | struct ieee80211_tx_status *status) | |
995 | { | |
996 | struct ieee80211_local *local = hw_to_local(hw); | |
997 | struct ieee80211_tx_status *saved; | |
998 | int tmp; | |
999 | ||
1000 | skb->dev = local->mdev; | |
1001 | saved = kmalloc(sizeof(struct ieee80211_tx_status), GFP_ATOMIC); | |
1002 | if (unlikely(!saved)) { | |
1003 | if (net_ratelimit()) | |
1004 | printk(KERN_WARNING "%s: Not enough memory, " | |
1005 | "dropping tx status", skb->dev->name); | |
1006 | /* should be dev_kfree_skb_irq, but due to this function being | |
1007 | * named _irqsafe instead of just _irq we can't be sure that | |
1008 | * people won't call it from non-irq contexts */ | |
1009 | dev_kfree_skb_any(skb); | |
1010 | return; | |
1011 | } | |
1012 | memcpy(saved, status, sizeof(struct ieee80211_tx_status)); | |
1013 | /* copy pointer to saved status into skb->cb for use by tasklet */ | |
1014 | memcpy(skb->cb, &saved, sizeof(saved)); | |
1015 | ||
1016 | skb->pkt_type = IEEE80211_TX_STATUS_MSG; | |
1017 | skb_queue_tail(status->control.flags & IEEE80211_TXCTL_REQ_TX_STATUS ? | |
1018 | &local->skb_queue : &local->skb_queue_unreliable, skb); | |
1019 | tmp = skb_queue_len(&local->skb_queue) + | |
1020 | skb_queue_len(&local->skb_queue_unreliable); | |
1021 | while (tmp > IEEE80211_IRQSAFE_QUEUE_LIMIT && | |
1022 | (skb = skb_dequeue(&local->skb_queue_unreliable))) { | |
1023 | memcpy(&saved, skb->cb, sizeof(saved)); | |
1024 | kfree(saved); | |
1025 | dev_kfree_skb_irq(skb); | |
1026 | tmp--; | |
1027 | I802_DEBUG_INC(local->tx_status_drop); | |
1028 | } | |
1029 | tasklet_schedule(&local->tasklet); | |
1030 | } | |
1031 | EXPORT_SYMBOL(ieee80211_tx_status_irqsafe); | |
1032 | ||
1033 | static void ieee80211_tasklet_handler(unsigned long data) | |
1034 | { | |
1035 | struct ieee80211_local *local = (struct ieee80211_local *) data; | |
1036 | struct sk_buff *skb; | |
1037 | struct ieee80211_rx_status rx_status; | |
1038 | struct ieee80211_tx_status *tx_status; | |
eadc8d9e | 1039 | struct ieee80211_ra_tid *ra_tid; |
f0706e82 JB |
1040 | |
1041 | while ((skb = skb_dequeue(&local->skb_queue)) || | |
1042 | (skb = skb_dequeue(&local->skb_queue_unreliable))) { | |
1043 | switch (skb->pkt_type) { | |
1044 | case IEEE80211_RX_MSG: | |
1045 | /* status is in skb->cb */ | |
1046 | memcpy(&rx_status, skb->cb, sizeof(rx_status)); | |
51fb61e7 | 1047 | /* Clear skb->pkt_type in order to not confuse kernel |
f0706e82 JB |
1048 | * netstack. */ |
1049 | skb->pkt_type = 0; | |
1050 | __ieee80211_rx(local_to_hw(local), skb, &rx_status); | |
1051 | break; | |
1052 | case IEEE80211_TX_STATUS_MSG: | |
1053 | /* get pointer to saved status out of skb->cb */ | |
1054 | memcpy(&tx_status, skb->cb, sizeof(tx_status)); | |
1055 | skb->pkt_type = 0; | |
1056 | ieee80211_tx_status(local_to_hw(local), | |
1057 | skb, tx_status); | |
1058 | kfree(tx_status); | |
1059 | break; | |
eadc8d9e RR |
1060 | case IEEE80211_DELBA_MSG: |
1061 | ra_tid = (struct ieee80211_ra_tid *) &skb->cb; | |
1062 | ieee80211_stop_tx_ba_cb(local_to_hw(local), | |
1063 | ra_tid->ra, ra_tid->tid); | |
1064 | dev_kfree_skb(skb); | |
1065 | break; | |
1066 | case IEEE80211_ADDBA_MSG: | |
1067 | ra_tid = (struct ieee80211_ra_tid *) &skb->cb; | |
1068 | ieee80211_start_tx_ba_cb(local_to_hw(local), | |
1069 | ra_tid->ra, ra_tid->tid); | |
1070 | dev_kfree_skb(skb); | |
1071 | break ; | |
f0706e82 JB |
1072 | default: /* should never get here! */ |
1073 | printk(KERN_ERR "%s: Unknown message type (%d)\n", | |
dd1cd4c6 | 1074 | wiphy_name(local->hw.wiphy), skb->pkt_type); |
f0706e82 JB |
1075 | dev_kfree_skb(skb); |
1076 | break; | |
1077 | } | |
1078 | } | |
1079 | } | |
1080 | ||
f0706e82 JB |
1081 | /* Remove added headers (e.g., QoS control), encryption header/MIC, etc. to |
1082 | * make a prepared TX frame (one that has been given to hw) to look like brand | |
1083 | * new IEEE 802.11 frame that is ready to go through TX processing again. | |
1084 | * Also, tx_packet_data in cb is restored from tx_control. */ | |
1085 | static void ieee80211_remove_tx_extra(struct ieee80211_local *local, | |
1086 | struct ieee80211_key *key, | |
1087 | struct sk_buff *skb, | |
1088 | struct ieee80211_tx_control *control) | |
1089 | { | |
1090 | int hdrlen, iv_len, mic_len; | |
1091 | struct ieee80211_tx_packet_data *pkt_data; | |
1092 | ||
1093 | pkt_data = (struct ieee80211_tx_packet_data *)skb->cb; | |
32bfd35d | 1094 | pkt_data->ifindex = vif_to_sdata(control->vif)->dev->ifindex; |
e8bf9649 JS |
1095 | pkt_data->flags = 0; |
1096 | if (control->flags & IEEE80211_TXCTL_REQ_TX_STATUS) | |
1097 | pkt_data->flags |= IEEE80211_TXPD_REQ_TX_STATUS; | |
1098 | if (control->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT) | |
1099 | pkt_data->flags |= IEEE80211_TXPD_DO_NOT_ENCRYPT; | |
1100 | if (control->flags & IEEE80211_TXCTL_REQUEUE) | |
1101 | pkt_data->flags |= IEEE80211_TXPD_REQUEUE; | |
678f5f71 JB |
1102 | if (control->flags & IEEE80211_TXCTL_EAPOL_FRAME) |
1103 | pkt_data->flags |= IEEE80211_TXPD_EAPOL_FRAME; | |
f0706e82 JB |
1104 | pkt_data->queue = control->queue; |
1105 | ||
1106 | hdrlen = ieee80211_get_hdrlen_from_skb(skb); | |
1107 | ||
1108 | if (!key) | |
1109 | goto no_key; | |
1110 | ||
8f20fc24 | 1111 | switch (key->conf.alg) { |
f0706e82 JB |
1112 | case ALG_WEP: |
1113 | iv_len = WEP_IV_LEN; | |
1114 | mic_len = WEP_ICV_LEN; | |
1115 | break; | |
1116 | case ALG_TKIP: | |
1117 | iv_len = TKIP_IV_LEN; | |
1118 | mic_len = TKIP_ICV_LEN; | |
1119 | break; | |
1120 | case ALG_CCMP: | |
1121 | iv_len = CCMP_HDR_LEN; | |
1122 | mic_len = CCMP_MIC_LEN; | |
1123 | break; | |
1124 | default: | |
1125 | goto no_key; | |
1126 | } | |
1127 | ||
8f20fc24 | 1128 | if (skb->len >= mic_len && |
11a843b7 | 1129 | !(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)) |
f0706e82 JB |
1130 | skb_trim(skb, skb->len - mic_len); |
1131 | if (skb->len >= iv_len && skb->len > hdrlen) { | |
1132 | memmove(skb->data + iv_len, skb->data, hdrlen); | |
1133 | skb_pull(skb, iv_len); | |
1134 | } | |
1135 | ||
1136 | no_key: | |
1137 | { | |
1138 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; | |
1139 | u16 fc = le16_to_cpu(hdr->frame_control); | |
1140 | if ((fc & 0x8C) == 0x88) /* QoS Control Field */ { | |
1141 | fc &= ~IEEE80211_STYPE_QOS_DATA; | |
1142 | hdr->frame_control = cpu_to_le16(fc); | |
1143 | memmove(skb->data + 2, skb->data, hdrlen - 2); | |
1144 | skb_pull(skb, 2); | |
1145 | } | |
1146 | } | |
1147 | } | |
1148 | ||
f0706e82 JB |
1149 | void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb, |
1150 | struct ieee80211_tx_status *status) | |
1151 | { | |
1152 | struct sk_buff *skb2; | |
1153 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; | |
1154 | struct ieee80211_local *local = hw_to_local(hw); | |
1155 | u16 frag, type; | |
b306f453 JB |
1156 | struct ieee80211_tx_status_rtap_hdr *rthdr; |
1157 | struct ieee80211_sub_if_data *sdata; | |
1158 | int monitors; | |
f0706e82 JB |
1159 | |
1160 | if (!status) { | |
1161 | printk(KERN_ERR | |
1162 | "%s: ieee80211_tx_status called with NULL status\n", | |
dd1cd4c6 | 1163 | wiphy_name(local->hw.wiphy)); |
f0706e82 JB |
1164 | dev_kfree_skb(skb); |
1165 | return; | |
1166 | } | |
1167 | ||
1168 | if (status->excessive_retries) { | |
1169 | struct sta_info *sta; | |
1170 | sta = sta_info_get(local, hdr->addr1); | |
1171 | if (sta) { | |
1172 | if (sta->flags & WLAN_STA_PS) { | |
1173 | /* The STA is in power save mode, so assume | |
1174 | * that this TX packet failed because of that. | |
1175 | */ | |
1176 | status->excessive_retries = 0; | |
1177 | status->flags |= IEEE80211_TX_STATUS_TX_FILTERED; | |
1178 | } | |
1179 | sta_info_put(sta); | |
1180 | } | |
1181 | } | |
1182 | ||
1183 | if (status->flags & IEEE80211_TX_STATUS_TX_FILTERED) { | |
1184 | struct sta_info *sta; | |
1185 | sta = sta_info_get(local, hdr->addr1); | |
1186 | if (sta) { | |
1187 | sta->tx_filtered_count++; | |
1188 | ||
1189 | /* Clear the TX filter mask for this STA when sending | |
1190 | * the next packet. If the STA went to power save mode, | |
1191 | * this will happen when it is waking up for the next | |
1192 | * time. */ | |
1193 | sta->clear_dst_mask = 1; | |
1194 | ||
1195 | /* TODO: Is the WLAN_STA_PS flag always set here or is | |
1196 | * the race between RX and TX status causing some | |
1197 | * packets to be filtered out before 80211.o gets an | |
1198 | * update for PS status? This seems to be the case, so | |
1199 | * no changes are likely to be needed. */ | |
1200 | if (sta->flags & WLAN_STA_PS && | |
1201 | skb_queue_len(&sta->tx_filtered) < | |
1202 | STA_MAX_TX_BUFFER) { | |
1203 | ieee80211_remove_tx_extra(local, sta->key, | |
1204 | skb, | |
1205 | &status->control); | |
1206 | skb_queue_tail(&sta->tx_filtered, skb); | |
1207 | } else if (!(sta->flags & WLAN_STA_PS) && | |
1208 | !(status->control.flags & IEEE80211_TXCTL_REQUEUE)) { | |
1209 | /* Software retry the packet once */ | |
1210 | status->control.flags |= IEEE80211_TXCTL_REQUEUE; | |
1211 | ieee80211_remove_tx_extra(local, sta->key, | |
1212 | skb, | |
1213 | &status->control); | |
1214 | dev_queue_xmit(skb); | |
1215 | } else { | |
1216 | if (net_ratelimit()) { | |
1217 | printk(KERN_DEBUG "%s: dropped TX " | |
1218 | "filtered frame queue_len=%d " | |
1219 | "PS=%d @%lu\n", | |
dd1cd4c6 | 1220 | wiphy_name(local->hw.wiphy), |
f0706e82 JB |
1221 | skb_queue_len( |
1222 | &sta->tx_filtered), | |
1223 | !!(sta->flags & WLAN_STA_PS), | |
1224 | jiffies); | |
1225 | } | |
1226 | dev_kfree_skb(skb); | |
1227 | } | |
1228 | sta_info_put(sta); | |
1229 | return; | |
1230 | } | |
1abbe498 MN |
1231 | } else |
1232 | rate_control_tx_status(local->mdev, skb, status); | |
f0706e82 JB |
1233 | |
1234 | ieee80211_led_tx(local, 0); | |
1235 | ||
1236 | /* SNMP counters | |
1237 | * Fragments are passed to low-level drivers as separate skbs, so these | |
1238 | * are actually fragments, not frames. Update frame counters only for | |
1239 | * the first fragment of the frame. */ | |
1240 | ||
1241 | frag = le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_FRAG; | |
1242 | type = le16_to_cpu(hdr->frame_control) & IEEE80211_FCTL_FTYPE; | |
1243 | ||
1244 | if (status->flags & IEEE80211_TX_STATUS_ACK) { | |
1245 | if (frag == 0) { | |
1246 | local->dot11TransmittedFrameCount++; | |
1247 | if (is_multicast_ether_addr(hdr->addr1)) | |
1248 | local->dot11MulticastTransmittedFrameCount++; | |
1249 | if (status->retry_count > 0) | |
1250 | local->dot11RetryCount++; | |
1251 | if (status->retry_count > 1) | |
1252 | local->dot11MultipleRetryCount++; | |
1253 | } | |
1254 | ||
1255 | /* This counter shall be incremented for an acknowledged MPDU | |
1256 | * with an individual address in the address 1 field or an MPDU | |
1257 | * with a multicast address in the address 1 field of type Data | |
1258 | * or Management. */ | |
1259 | if (!is_multicast_ether_addr(hdr->addr1) || | |
1260 | type == IEEE80211_FTYPE_DATA || | |
1261 | type == IEEE80211_FTYPE_MGMT) | |
1262 | local->dot11TransmittedFragmentCount++; | |
1263 | } else { | |
1264 | if (frag == 0) | |
1265 | local->dot11FailedCount++; | |
1266 | } | |
1267 | ||
b306f453 JB |
1268 | /* this was a transmitted frame, but now we want to reuse it */ |
1269 | skb_orphan(skb); | |
1270 | ||
b306f453 | 1271 | if (!local->monitors) { |
f0706e82 JB |
1272 | dev_kfree_skb(skb); |
1273 | return; | |
1274 | } | |
1275 | ||
b306f453 | 1276 | /* send frame to monitor interfaces now */ |
f0706e82 | 1277 | |
b306f453 JB |
1278 | if (skb_headroom(skb) < sizeof(*rthdr)) { |
1279 | printk(KERN_ERR "ieee80211_tx_status: headroom too small\n"); | |
f0706e82 JB |
1280 | dev_kfree_skb(skb); |
1281 | return; | |
1282 | } | |
f0706e82 | 1283 | |
b306f453 JB |
1284 | rthdr = (struct ieee80211_tx_status_rtap_hdr*) |
1285 | skb_push(skb, sizeof(*rthdr)); | |
1286 | ||
1287 | memset(rthdr, 0, sizeof(*rthdr)); | |
1288 | rthdr->hdr.it_len = cpu_to_le16(sizeof(*rthdr)); | |
1289 | rthdr->hdr.it_present = | |
1290 | cpu_to_le32((1 << IEEE80211_RADIOTAP_TX_FLAGS) | | |
1291 | (1 << IEEE80211_RADIOTAP_DATA_RETRIES)); | |
1292 | ||
1293 | if (!(status->flags & IEEE80211_TX_STATUS_ACK) && | |
1294 | !is_multicast_ether_addr(hdr->addr1)) | |
1295 | rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_FAIL); | |
1296 | ||
1297 | if ((status->control.flags & IEEE80211_TXCTL_USE_RTS_CTS) && | |
1298 | (status->control.flags & IEEE80211_TXCTL_USE_CTS_PROTECT)) | |
1299 | rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_CTS); | |
1300 | else if (status->control.flags & IEEE80211_TXCTL_USE_RTS_CTS) | |
1301 | rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_RTS); | |
1302 | ||
1303 | rthdr->data_retries = status->retry_count; | |
1304 | ||
79010420 | 1305 | rcu_read_lock(); |
b306f453 | 1306 | monitors = local->monitors; |
79010420 | 1307 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
b306f453 JB |
1308 | /* |
1309 | * Using the monitors counter is possibly racy, but | |
1310 | * if the value is wrong we simply either clone the skb | |
1311 | * once too much or forget sending it to one monitor iface | |
1312 | * The latter case isn't nice but fixing the race is much | |
1313 | * more complicated. | |
1314 | */ | |
1315 | if (!monitors || !skb) | |
1316 | goto out; | |
1317 | ||
51fb61e7 | 1318 | if (sdata->vif.type == IEEE80211_IF_TYPE_MNTR) { |
b306f453 JB |
1319 | if (!netif_running(sdata->dev)) |
1320 | continue; | |
1321 | monitors--; | |
1322 | if (monitors) | |
79010420 | 1323 | skb2 = skb_clone(skb, GFP_ATOMIC); |
b306f453 JB |
1324 | else |
1325 | skb2 = NULL; | |
1326 | skb->dev = sdata->dev; | |
1327 | /* XXX: is this sufficient for BPF? */ | |
1328 | skb_set_mac_header(skb, 0); | |
1329 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
1330 | skb->pkt_type = PACKET_OTHERHOST; | |
1331 | skb->protocol = htons(ETH_P_802_2); | |
1332 | memset(skb->cb, 0, sizeof(skb->cb)); | |
1333 | netif_rx(skb); | |
1334 | skb = skb2; | |
b306f453 JB |
1335 | } |
1336 | } | |
1337 | out: | |
79010420 | 1338 | rcu_read_unlock(); |
b306f453 JB |
1339 | if (skb) |
1340 | dev_kfree_skb(skb); | |
f0706e82 JB |
1341 | } |
1342 | EXPORT_SYMBOL(ieee80211_tx_status); | |
1343 | ||
f0706e82 JB |
1344 | struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len, |
1345 | const struct ieee80211_ops *ops) | |
1346 | { | |
1347 | struct net_device *mdev; | |
1348 | struct ieee80211_local *local; | |
1349 | struct ieee80211_sub_if_data *sdata; | |
1350 | int priv_size; | |
1351 | struct wiphy *wiphy; | |
1352 | ||
1353 | /* Ensure 32-byte alignment of our private data and hw private data. | |
1354 | * We use the wiphy priv data for both our ieee80211_local and for | |
1355 | * the driver's private data | |
1356 | * | |
1357 | * In memory it'll be like this: | |
1358 | * | |
1359 | * +-------------------------+ | |
1360 | * | struct wiphy | | |
1361 | * +-------------------------+ | |
1362 | * | struct ieee80211_local | | |
1363 | * +-------------------------+ | |
1364 | * | driver's private data | | |
1365 | * +-------------------------+ | |
1366 | * | |
1367 | */ | |
1368 | priv_size = ((sizeof(struct ieee80211_local) + | |
1369 | NETDEV_ALIGN_CONST) & ~NETDEV_ALIGN_CONST) + | |
1370 | priv_data_len; | |
1371 | ||
1372 | wiphy = wiphy_new(&mac80211_config_ops, priv_size); | |
1373 | ||
1374 | if (!wiphy) | |
1375 | return NULL; | |
1376 | ||
1377 | wiphy->privid = mac80211_wiphy_privid; | |
1378 | ||
1379 | local = wiphy_priv(wiphy); | |
1380 | local->hw.wiphy = wiphy; | |
1381 | ||
1382 | local->hw.priv = (char *)local + | |
1383 | ((sizeof(struct ieee80211_local) + | |
1384 | NETDEV_ALIGN_CONST) & ~NETDEV_ALIGN_CONST); | |
1385 | ||
4480f15c | 1386 | BUG_ON(!ops->tx); |
4150c572 JB |
1387 | BUG_ON(!ops->start); |
1388 | BUG_ON(!ops->stop); | |
4480f15c JB |
1389 | BUG_ON(!ops->config); |
1390 | BUG_ON(!ops->add_interface); | |
4150c572 JB |
1391 | BUG_ON(!ops->remove_interface); |
1392 | BUG_ON(!ops->configure_filter); | |
f0706e82 JB |
1393 | local->ops = ops; |
1394 | ||
1395 | /* for now, mdev needs sub_if_data :/ */ | |
1396 | mdev = alloc_netdev(sizeof(struct ieee80211_sub_if_data), | |
1397 | "wmaster%d", ether_setup); | |
1398 | if (!mdev) { | |
1399 | wiphy_free(wiphy); | |
1400 | return NULL; | |
1401 | } | |
1402 | ||
1403 | sdata = IEEE80211_DEV_TO_SUB_IF(mdev); | |
1404 | mdev->ieee80211_ptr = &sdata->wdev; | |
1405 | sdata->wdev.wiphy = wiphy; | |
1406 | ||
1407 | local->hw.queues = 1; /* default */ | |
1408 | ||
1409 | local->mdev = mdev; | |
1410 | local->rx_pre_handlers = ieee80211_rx_pre_handlers; | |
1411 | local->rx_handlers = ieee80211_rx_handlers; | |
1412 | local->tx_handlers = ieee80211_tx_handlers; | |
1413 | ||
1414 | local->bridge_packets = 1; | |
1415 | ||
1416 | local->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD; | |
1417 | local->fragmentation_threshold = IEEE80211_MAX_FRAG_THRESHOLD; | |
1418 | local->short_retry_limit = 7; | |
1419 | local->long_retry_limit = 4; | |
1420 | local->hw.conf.radio_enabled = 1; | |
f0706e82 | 1421 | |
b708e610 | 1422 | local->enabled_modes = ~0; |
f0706e82 JB |
1423 | |
1424 | INIT_LIST_HEAD(&local->modes_list); | |
1425 | ||
79010420 | 1426 | INIT_LIST_HEAD(&local->interfaces); |
f0706e82 JB |
1427 | |
1428 | INIT_DELAYED_WORK(&local->scan_work, ieee80211_sta_scan_work); | |
f0706e82 JB |
1429 | ieee80211_rx_bss_list_init(mdev); |
1430 | ||
1431 | sta_info_init(local); | |
1432 | ||
1433 | mdev->hard_start_xmit = ieee80211_master_start_xmit; | |
1434 | mdev->open = ieee80211_master_open; | |
1435 | mdev->stop = ieee80211_master_stop; | |
1436 | mdev->type = ARPHRD_IEEE80211; | |
3b04ddde | 1437 | mdev->header_ops = &ieee80211_header_ops; |
4150c572 | 1438 | mdev->set_multicast_list = ieee80211_master_set_multicast_list; |
f0706e82 | 1439 | |
51fb61e7 | 1440 | sdata->vif.type = IEEE80211_IF_TYPE_AP; |
f0706e82 JB |
1441 | sdata->dev = mdev; |
1442 | sdata->local = local; | |
1443 | sdata->u.ap.force_unicast_rateidx = -1; | |
1444 | sdata->u.ap.max_ratectrl_rateidx = -1; | |
1445 | ieee80211_if_sdata_init(sdata); | |
79010420 JB |
1446 | /* no RCU needed since we're still during init phase */ |
1447 | list_add_tail(&sdata->list, &local->interfaces); | |
f0706e82 JB |
1448 | |
1449 | tasklet_init(&local->tx_pending_tasklet, ieee80211_tx_pending, | |
1450 | (unsigned long)local); | |
1451 | tasklet_disable(&local->tx_pending_tasklet); | |
1452 | ||
1453 | tasklet_init(&local->tasklet, | |
1454 | ieee80211_tasklet_handler, | |
1455 | (unsigned long) local); | |
1456 | tasklet_disable(&local->tasklet); | |
1457 | ||
1458 | skb_queue_head_init(&local->skb_queue); | |
1459 | skb_queue_head_init(&local->skb_queue_unreliable); | |
1460 | ||
1461 | return local_to_hw(local); | |
1462 | } | |
1463 | EXPORT_SYMBOL(ieee80211_alloc_hw); | |
1464 | ||
1465 | int ieee80211_register_hw(struct ieee80211_hw *hw) | |
1466 | { | |
1467 | struct ieee80211_local *local = hw_to_local(hw); | |
1468 | const char *name; | |
1469 | int result; | |
1470 | ||
1471 | result = wiphy_register(local->hw.wiphy); | |
1472 | if (result < 0) | |
1473 | return result; | |
1474 | ||
1475 | name = wiphy_dev(local->hw.wiphy)->driver->name; | |
1476 | local->hw.workqueue = create_singlethread_workqueue(name); | |
1477 | if (!local->hw.workqueue) { | |
1478 | result = -ENOMEM; | |
1479 | goto fail_workqueue; | |
1480 | } | |
1481 | ||
b306f453 JB |
1482 | /* |
1483 | * The hardware needs headroom for sending the frame, | |
1484 | * and we need some headroom for passing the frame to monitor | |
1485 | * interfaces, but never both at the same time. | |
1486 | */ | |
33ccad35 JB |
1487 | local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom, |
1488 | sizeof(struct ieee80211_tx_status_rtap_hdr)); | |
b306f453 | 1489 | |
e9f207f0 JB |
1490 | debugfs_hw_add(local); |
1491 | ||
f0706e82 JB |
1492 | local->hw.conf.beacon_int = 1000; |
1493 | ||
1494 | local->wstats_flags |= local->hw.max_rssi ? | |
1495 | IW_QUAL_LEVEL_UPDATED : IW_QUAL_LEVEL_INVALID; | |
1496 | local->wstats_flags |= local->hw.max_signal ? | |
1497 | IW_QUAL_QUAL_UPDATED : IW_QUAL_QUAL_INVALID; | |
1498 | local->wstats_flags |= local->hw.max_noise ? | |
1499 | IW_QUAL_NOISE_UPDATED : IW_QUAL_NOISE_INVALID; | |
1500 | if (local->hw.max_rssi < 0 || local->hw.max_noise < 0) | |
1501 | local->wstats_flags |= IW_QUAL_DBM; | |
1502 | ||
1503 | result = sta_info_start(local); | |
1504 | if (result < 0) | |
1505 | goto fail_sta_info; | |
1506 | ||
1507 | rtnl_lock(); | |
1508 | result = dev_alloc_name(local->mdev, local->mdev->name); | |
1509 | if (result < 0) | |
1510 | goto fail_dev; | |
1511 | ||
1512 | memcpy(local->mdev->dev_addr, local->hw.wiphy->perm_addr, ETH_ALEN); | |
1513 | SET_NETDEV_DEV(local->mdev, wiphy_dev(local->hw.wiphy)); | |
1514 | ||
1515 | result = register_netdevice(local->mdev); | |
1516 | if (result < 0) | |
1517 | goto fail_dev; | |
1518 | ||
e9f207f0 | 1519 | ieee80211_debugfs_add_netdev(IEEE80211_DEV_TO_SUB_IF(local->mdev)); |
5b2812e9 | 1520 | ieee80211_if_set_type(local->mdev, IEEE80211_IF_TYPE_AP); |
e9f207f0 | 1521 | |
830f9038 JB |
1522 | result = ieee80211_init_rate_ctrl_alg(local, |
1523 | hw->rate_control_algorithm); | |
f0706e82 JB |
1524 | if (result < 0) { |
1525 | printk(KERN_DEBUG "%s: Failed to initialize rate control " | |
dd1cd4c6 | 1526 | "algorithm\n", wiphy_name(local->hw.wiphy)); |
f0706e82 JB |
1527 | goto fail_rate; |
1528 | } | |
1529 | ||
1530 | result = ieee80211_wep_init(local); | |
1531 | ||
1532 | if (result < 0) { | |
1533 | printk(KERN_DEBUG "%s: Failed to initialize wep\n", | |
dd1cd4c6 | 1534 | wiphy_name(local->hw.wiphy)); |
f0706e82 JB |
1535 | goto fail_wep; |
1536 | } | |
1537 | ||
1538 | ieee80211_install_qdisc(local->mdev); | |
1539 | ||
1540 | /* add one default STA interface */ | |
1541 | result = ieee80211_if_add(local->mdev, "wlan%d", NULL, | |
1542 | IEEE80211_IF_TYPE_STA); | |
1543 | if (result) | |
1544 | printk(KERN_WARNING "%s: Failed to add default virtual iface\n", | |
dd1cd4c6 | 1545 | wiphy_name(local->hw.wiphy)); |
f0706e82 JB |
1546 | |
1547 | local->reg_state = IEEE80211_DEV_REGISTERED; | |
1548 | rtnl_unlock(); | |
1549 | ||
1550 | ieee80211_led_init(local); | |
1551 | ||
1552 | return 0; | |
1553 | ||
1554 | fail_wep: | |
1555 | rate_control_deinitialize(local); | |
1556 | fail_rate: | |
e9f207f0 | 1557 | ieee80211_debugfs_remove_netdev(IEEE80211_DEV_TO_SUB_IF(local->mdev)); |
f0706e82 JB |
1558 | unregister_netdevice(local->mdev); |
1559 | fail_dev: | |
1560 | rtnl_unlock(); | |
1561 | sta_info_stop(local); | |
1562 | fail_sta_info: | |
e9f207f0 | 1563 | debugfs_hw_del(local); |
f0706e82 JB |
1564 | destroy_workqueue(local->hw.workqueue); |
1565 | fail_workqueue: | |
1566 | wiphy_unregister(local->hw.wiphy); | |
1567 | return result; | |
1568 | } | |
1569 | EXPORT_SYMBOL(ieee80211_register_hw); | |
1570 | ||
1571 | int ieee80211_register_hwmode(struct ieee80211_hw *hw, | |
1572 | struct ieee80211_hw_mode *mode) | |
1573 | { | |
1574 | struct ieee80211_local *local = hw_to_local(hw); | |
1575 | struct ieee80211_rate *rate; | |
1576 | int i; | |
1577 | ||
1578 | INIT_LIST_HEAD(&mode->list); | |
1579 | list_add_tail(&mode->list, &local->modes_list); | |
1580 | ||
1581 | local->hw_modes |= (1 << mode->mode); | |
1582 | for (i = 0; i < mode->num_rates; i++) { | |
1583 | rate = &(mode->rates[i]); | |
1584 | rate->rate_inv = CHAN_UTIL_RATE_LCM / rate->rate; | |
1585 | } | |
1586 | ieee80211_prepare_rates(local, mode); | |
1587 | ||
1588 | if (!local->oper_hw_mode) { | |
1589 | /* Default to this mode */ | |
1590 | local->hw.conf.phymode = mode->mode; | |
1591 | local->oper_hw_mode = local->scan_hw_mode = mode; | |
1592 | local->oper_channel = local->scan_channel = &mode->channels[0]; | |
1593 | local->hw.conf.mode = local->oper_hw_mode; | |
1594 | local->hw.conf.chan = local->oper_channel; | |
1595 | } | |
1596 | ||
1597 | if (!(hw->flags & IEEE80211_HW_DEFAULT_REG_DOMAIN_CONFIGURED)) | |
fd8bacc9 | 1598 | ieee80211_set_default_regdomain(mode); |
f0706e82 JB |
1599 | |
1600 | return 0; | |
1601 | } | |
1602 | EXPORT_SYMBOL(ieee80211_register_hwmode); | |
1603 | ||
1604 | void ieee80211_unregister_hw(struct ieee80211_hw *hw) | |
1605 | { | |
1606 | struct ieee80211_local *local = hw_to_local(hw); | |
1607 | struct ieee80211_sub_if_data *sdata, *tmp; | |
f0706e82 JB |
1608 | int i; |
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 JB |
1648 | |
1649 | for (i = 0; i < NUM_IEEE80211_MODES; i++) { | |
1650 | kfree(local->supp_rates[i]); | |
1651 | kfree(local->basic_rates[i]); | |
1652 | } | |
1653 | ||
1654 | if (skb_queue_len(&local->skb_queue) | |
1655 | || skb_queue_len(&local->skb_queue_unreliable)) | |
1656 | printk(KERN_WARNING "%s: skb_queue not empty\n", | |
dd1cd4c6 | 1657 | wiphy_name(local->hw.wiphy)); |
f0706e82 JB |
1658 | skb_queue_purge(&local->skb_queue); |
1659 | skb_queue_purge(&local->skb_queue_unreliable); | |
1660 | ||
1661 | destroy_workqueue(local->hw.workqueue); | |
1662 | wiphy_unregister(local->hw.wiphy); | |
1663 | ieee80211_wep_free(local); | |
1664 | ieee80211_led_exit(local); | |
1665 | } | |
1666 | EXPORT_SYMBOL(ieee80211_unregister_hw); | |
1667 | ||
1668 | void ieee80211_free_hw(struct ieee80211_hw *hw) | |
1669 | { | |
1670 | struct ieee80211_local *local = hw_to_local(hw); | |
1671 | ||
1672 | ieee80211_if_free(local->mdev); | |
1673 | wiphy_free(local->hw.wiphy); | |
1674 | } | |
1675 | EXPORT_SYMBOL(ieee80211_free_hw); | |
1676 | ||
f0706e82 JB |
1677 | static int __init ieee80211_init(void) |
1678 | { | |
1679 | struct sk_buff *skb; | |
1680 | int ret; | |
1681 | ||
1682 | BUILD_BUG_ON(sizeof(struct ieee80211_tx_packet_data) > sizeof(skb->cb)); | |
1683 | ||
4b475898 | 1684 | ret = rc80211_simple_init(); |
ac71c691 | 1685 | if (ret) |
3eadf5f4 | 1686 | goto out; |
ad018375 | 1687 | |
4b475898 | 1688 | ret = rc80211_pid_init(); |
ad018375 | 1689 | if (ret) |
3eadf5f4 | 1690 | goto out_cleanup_simple; |
ac71c691 | 1691 | |
f0706e82 JB |
1692 | ret = ieee80211_wme_register(); |
1693 | if (ret) { | |
1694 | printk(KERN_DEBUG "ieee80211_init: failed to " | |
1695 | "initialize WME (err=%d)\n", ret); | |
3eadf5f4 | 1696 | goto out_cleanup_pid; |
f0706e82 JB |
1697 | } |
1698 | ||
e9f207f0 | 1699 | ieee80211_debugfs_netdev_init(); |
fd8bacc9 | 1700 | ieee80211_regdomain_init(); |
e9f207f0 | 1701 | |
f0706e82 | 1702 | return 0; |
ad018375 | 1703 | |
3eadf5f4 | 1704 | out_cleanup_pid: |
4b475898 | 1705 | rc80211_pid_exit(); |
3eadf5f4 JB |
1706 | out_cleanup_simple: |
1707 | rc80211_simple_exit(); | |
1708 | out: | |
ad018375 | 1709 | return ret; |
f0706e82 JB |
1710 | } |
1711 | ||
f0706e82 JB |
1712 | static void __exit ieee80211_exit(void) |
1713 | { | |
4b475898 JB |
1714 | rc80211_simple_exit(); |
1715 | rc80211_pid_exit(); | |
ac71c691 | 1716 | |
f0706e82 | 1717 | ieee80211_wme_unregister(); |
e9f207f0 | 1718 | ieee80211_debugfs_netdev_exit(); |
f0706e82 JB |
1719 | } |
1720 | ||
1721 | ||
ca9938fe | 1722 | subsys_initcall(ieee80211_init); |
f0706e82 JB |
1723 | module_exit(ieee80211_exit); |
1724 | ||
1725 | MODULE_DESCRIPTION("IEEE 802.11 subsystem"); | |
1726 | MODULE_LICENSE("GPL"); |