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 | 27 | #include "ieee80211_i.h" |
2c8dccc7 | 28 | #include "rate.h" |
f7a92144 | 29 | #include "mesh.h" |
f0706e82 | 30 | #include "wep.h" |
f0706e82 JB |
31 | #include "wme.h" |
32 | #include "aes_ccm.h" | |
2c8dccc7 | 33 | #include "led.h" |
e0eb6859 | 34 | #include "cfg.h" |
e9f207f0 JB |
35 | #include "debugfs.h" |
36 | #include "debugfs_netdev.h" | |
f0706e82 | 37 | |
b306f453 JB |
38 | /* |
39 | * For seeing transmitted packets on monitor interfaces | |
40 | * we have a radiotap header too. | |
41 | */ | |
42 | struct ieee80211_tx_status_rtap_hdr { | |
43 | struct ieee80211_radiotap_header hdr; | |
44 | __le16 tx_flags; | |
45 | u8 data_retries; | |
46 | } __attribute__ ((packed)); | |
47 | ||
f0706e82 | 48 | |
4150c572 | 49 | /* must be called under mdev tx lock */ |
0d143fe1 | 50 | void ieee80211_configure_filter(struct ieee80211_local *local) |
4150c572 JB |
51 | { |
52 | unsigned int changed_flags; | |
53 | unsigned int new_flags = 0; | |
54 | ||
53918994 | 55 | if (atomic_read(&local->iff_promiscs)) |
4150c572 JB |
56 | new_flags |= FIF_PROMISC_IN_BSS; |
57 | ||
53918994 | 58 | if (atomic_read(&local->iff_allmultis)) |
4150c572 JB |
59 | new_flags |= FIF_ALLMULTI; |
60 | ||
61 | if (local->monitors) | |
8cc9a739 MW |
62 | new_flags |= FIF_BCN_PRBRESP_PROMISC; |
63 | ||
64 | if (local->fif_fcsfail) | |
65 | new_flags |= FIF_FCSFAIL; | |
66 | ||
67 | if (local->fif_plcpfail) | |
68 | new_flags |= FIF_PLCPFAIL; | |
69 | ||
70 | if (local->fif_control) | |
71 | new_flags |= FIF_CONTROL; | |
72 | ||
73 | if (local->fif_other_bss) | |
74 | new_flags |= FIF_OTHER_BSS; | |
4150c572 JB |
75 | |
76 | changed_flags = local->filter_flags ^ new_flags; | |
77 | ||
78 | /* be a bit nasty */ | |
79 | new_flags |= (1<<31); | |
80 | ||
81 | local->ops->configure_filter(local_to_hw(local), | |
82 | changed_flags, &new_flags, | |
83 | local->mdev->mc_count, | |
84 | local->mdev->mc_list); | |
85 | ||
86 | WARN_ON(new_flags & (1<<31)); | |
87 | ||
88 | local->filter_flags = new_flags & ~(1<<31); | |
89 | } | |
90 | ||
b2c258fb | 91 | /* master interface */ |
f0706e82 | 92 | |
0d143fe1 JB |
93 | static int header_parse_80211(const struct sk_buff *skb, unsigned char *haddr) |
94 | { | |
95 | memcpy(haddr, skb_mac_header(skb) + 10, ETH_ALEN); /* addr2 */ | |
96 | return ETH_ALEN; | |
97 | } | |
98 | ||
99 | static const struct header_ops ieee80211_header_ops = { | |
100 | .create = eth_header, | |
101 | .parse = header_parse_80211, | |
102 | .rebuild = eth_rebuild_header, | |
103 | .cache = eth_header_cache, | |
104 | .cache_update = eth_header_cache_update, | |
105 | }; | |
106 | ||
b2c258fb JB |
107 | static int ieee80211_master_open(struct net_device *dev) |
108 | { | |
109 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
110 | struct ieee80211_sub_if_data *sdata; | |
111 | int res = -EOPNOTSUPP; | |
f0706e82 | 112 | |
79010420 JB |
113 | /* we hold the RTNL here so can safely walk the list */ |
114 | list_for_each_entry(sdata, &local->interfaces, list) { | |
3e122be0 | 115 | if (netif_running(sdata->dev)) { |
b2c258fb JB |
116 | res = 0; |
117 | break; | |
118 | } | |
119 | } | |
36d6825b JB |
120 | |
121 | if (res) | |
122 | return res; | |
123 | ||
51cb6db0 | 124 | netif_tx_start_all_queues(local->mdev); |
36d6825b JB |
125 | |
126 | return 0; | |
b2c258fb | 127 | } |
f0706e82 | 128 | |
b2c258fb | 129 | static int ieee80211_master_stop(struct net_device *dev) |
f0706e82 | 130 | { |
b2c258fb JB |
131 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); |
132 | struct ieee80211_sub_if_data *sdata; | |
f0706e82 | 133 | |
79010420 JB |
134 | /* we hold the RTNL here so can safely walk the list */ |
135 | list_for_each_entry(sdata, &local->interfaces, list) | |
3e122be0 | 136 | if (netif_running(sdata->dev)) |
b2c258fb | 137 | dev_close(sdata->dev); |
f0706e82 | 138 | |
b2c258fb JB |
139 | return 0; |
140 | } | |
f0706e82 | 141 | |
4150c572 JB |
142 | static void ieee80211_master_set_multicast_list(struct net_device *dev) |
143 | { | |
144 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
145 | ||
146 | ieee80211_configure_filter(local); | |
147 | } | |
148 | ||
b2c258fb JB |
149 | /* everything else */ |
150 | ||
9d139c81 | 151 | int ieee80211_if_config(struct ieee80211_sub_if_data *sdata, u32 changed) |
b2c258fb | 152 | { |
9d139c81 | 153 | struct ieee80211_local *local = sdata->local; |
b2c258fb | 154 | struct ieee80211_if_conf conf; |
b2c258fb | 155 | |
9d139c81 JB |
156 | if (WARN_ON(!netif_running(sdata->dev))) |
157 | return 0; | |
158 | ||
7a725f73 JB |
159 | if (WARN_ON(sdata->vif.type == NL80211_IFTYPE_AP_VLAN)) |
160 | return -EINVAL; | |
161 | ||
9d139c81 | 162 | if (!local->ops->config_interface) |
f0706e82 | 163 | return 0; |
f0706e82 | 164 | |
b2c258fb | 165 | memset(&conf, 0, sizeof(conf)); |
9d139c81 JB |
166 | conf.changed = changed; |
167 | ||
05c914fe JB |
168 | if (sdata->vif.type == NL80211_IFTYPE_STATION || |
169 | sdata->vif.type == NL80211_IFTYPE_ADHOC) { | |
4150c572 | 170 | conf.bssid = sdata->u.sta.bssid; |
b2c258fb JB |
171 | conf.ssid = sdata->u.sta.ssid; |
172 | conf.ssid_len = sdata->u.sta.ssid_len; | |
05c914fe | 173 | } else if (sdata->vif.type == NL80211_IFTYPE_AP) { |
9d139c81 | 174 | conf.bssid = sdata->dev->dev_addr; |
b2c258fb JB |
175 | conf.ssid = sdata->u.ap.ssid; |
176 | conf.ssid_len = sdata->u.ap.ssid_len; | |
9d139c81 JB |
177 | } else if (ieee80211_vif_is_mesh(&sdata->vif)) { |
178 | u8 zero[ETH_ALEN] = { 0 }; | |
179 | conf.bssid = zero; | |
180 | conf.ssid = zero; | |
181 | conf.ssid_len = 0; | |
182 | } else { | |
183 | WARN_ON(1); | |
184 | return -EINVAL; | |
f0706e82 | 185 | } |
f0706e82 | 186 | |
9d139c81 JB |
187 | if (WARN_ON(!conf.bssid && (changed & IEEE80211_IFCC_BSSID))) |
188 | return -EINVAL; | |
f0706e82 | 189 | |
9d139c81 JB |
190 | if (WARN_ON(!conf.ssid && (changed & IEEE80211_IFCC_SSID))) |
191 | return -EINVAL; | |
f0706e82 | 192 | |
9d139c81 JB |
193 | return local->ops->config_interface(local_to_hw(local), |
194 | &sdata->vif, &conf); | |
b2c258fb | 195 | } |
f0706e82 | 196 | |
b2c258fb JB |
197 | int ieee80211_hw_config(struct ieee80211_local *local) |
198 | { | |
b2c258fb JB |
199 | struct ieee80211_channel *chan; |
200 | int ret = 0; | |
f0706e82 | 201 | |
c2b13452 | 202 | if (local->sw_scanning) |
b2c258fb | 203 | chan = local->scan_channel; |
8318d78a | 204 | else |
b2c258fb | 205 | chan = local->oper_channel; |
f0706e82 | 206 | |
8318d78a JB |
207 | local->hw.conf.channel = chan; |
208 | ||
209 | if (!local->hw.conf.power_level) | |
210 | local->hw.conf.power_level = chan->max_power; | |
211 | else | |
212 | local->hw.conf.power_level = min(chan->max_power, | |
213 | local->hw.conf.power_level); | |
214 | ||
215 | local->hw.conf.max_antenna_gain = chan->max_antenna_gain; | |
f0706e82 | 216 | |
b2c258fb | 217 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
8318d78a JB |
218 | printk(KERN_DEBUG "%s: HW CONFIG: freq=%d\n", |
219 | wiphy_name(local->hw.wiphy), chan->center_freq); | |
220 | #endif | |
b2c258fb | 221 | |
f7c4daed | 222 | if (local->open_count) |
b2c258fb | 223 | ret = local->ops->config(local_to_hw(local), &local->hw.conf); |
f0706e82 | 224 | |
b2c258fb JB |
225 | return ret; |
226 | } | |
f0706e82 | 227 | |
d3c990fb | 228 | /** |
38668c05 TW |
229 | * ieee80211_handle_ht should be used only after legacy configuration |
230 | * has been determined namely band, as ht configuration depends upon | |
231 | * the hardware's HT abilities for a _specific_ band. | |
d3c990fb | 232 | */ |
38668c05 | 233 | u32 ieee80211_handle_ht(struct ieee80211_local *local, int enable_ht, |
d3c990fb RR |
234 | struct ieee80211_ht_info *req_ht_cap, |
235 | struct ieee80211_ht_bss_info *req_bss_cap) | |
236 | { | |
237 | struct ieee80211_conf *conf = &local->hw.conf; | |
8318d78a | 238 | struct ieee80211_supported_band *sband; |
38668c05 TW |
239 | struct ieee80211_ht_info ht_conf; |
240 | struct ieee80211_ht_bss_info ht_bss_conf; | |
38668c05 | 241 | u32 changed = 0; |
edcdf8b2 RR |
242 | int i; |
243 | u8 max_tx_streams = IEEE80211_HT_CAP_MAX_STREAMS; | |
244 | u8 tx_mcs_set_cap; | |
d3c990fb | 245 | |
8318d78a JB |
246 | sband = local->hw.wiphy->bands[conf->channel->band]; |
247 | ||
edcdf8b2 RR |
248 | memset(&ht_conf, 0, sizeof(struct ieee80211_ht_info)); |
249 | memset(&ht_bss_conf, 0, sizeof(struct ieee80211_ht_bss_info)); | |
250 | ||
d3c990fb | 251 | /* HT is not supported */ |
8318d78a | 252 | if (!sband->ht_info.ht_supported) { |
d3c990fb | 253 | conf->flags &= ~IEEE80211_CONF_SUPPORT_HT_MODE; |
edcdf8b2 | 254 | goto out; |
d3c990fb RR |
255 | } |
256 | ||
edcdf8b2 RR |
257 | /* disable HT */ |
258 | if (!enable_ht) { | |
259 | if (conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) | |
38668c05 | 260 | changed |= BSS_CHANGED_HT; |
edcdf8b2 RR |
261 | conf->flags &= ~IEEE80211_CONF_SUPPORT_HT_MODE; |
262 | conf->ht_conf.ht_supported = 0; | |
263 | goto out; | |
264 | } | |
38668c05 | 265 | |
38668c05 | 266 | |
edcdf8b2 RR |
267 | if (!(conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE)) |
268 | changed |= BSS_CHANGED_HT; | |
38668c05 | 269 | |
edcdf8b2 RR |
270 | conf->flags |= IEEE80211_CONF_SUPPORT_HT_MODE; |
271 | ht_conf.ht_supported = 1; | |
38668c05 | 272 | |
edcdf8b2 | 273 | ht_conf.cap = req_ht_cap->cap & sband->ht_info.cap; |
00c5ae2f TW |
274 | ht_conf.cap &= ~(IEEE80211_HT_CAP_SM_PS); |
275 | ht_conf.cap |= sband->ht_info.cap & IEEE80211_HT_CAP_SM_PS; | |
edcdf8b2 RR |
276 | ht_bss_conf.primary_channel = req_bss_cap->primary_channel; |
277 | ht_bss_conf.bss_cap = req_bss_cap->bss_cap; | |
278 | ht_bss_conf.bss_op_mode = req_bss_cap->bss_op_mode; | |
38668c05 | 279 | |
edcdf8b2 RR |
280 | ht_conf.ampdu_factor = req_ht_cap->ampdu_factor; |
281 | ht_conf.ampdu_density = req_ht_cap->ampdu_density; | |
38668c05 | 282 | |
edcdf8b2 RR |
283 | /* Bits 96-100 */ |
284 | tx_mcs_set_cap = sband->ht_info.supp_mcs_set[12]; | |
285 | ||
286 | /* configure suppoerted Tx MCS according to requested MCS | |
287 | * (based in most cases on Rx capabilities of peer) and self | |
288 | * Tx MCS capabilities (as defined by low level driver HW | |
289 | * Tx capabilities) */ | |
290 | if (!(tx_mcs_set_cap & IEEE80211_HT_CAP_MCS_TX_DEFINED)) | |
291 | goto check_changed; | |
d3c990fb | 292 | |
edcdf8b2 RR |
293 | /* Counting from 0 therfore + 1 */ |
294 | if (tx_mcs_set_cap & IEEE80211_HT_CAP_MCS_TX_RX_DIFF) | |
295 | max_tx_streams = ((tx_mcs_set_cap & | |
296 | IEEE80211_HT_CAP_MCS_TX_STREAMS) >> 2) + 1; | |
297 | ||
298 | for (i = 0; i < max_tx_streams; i++) | |
299 | ht_conf.supp_mcs_set[i] = | |
300 | sband->ht_info.supp_mcs_set[i] & | |
301 | req_ht_cap->supp_mcs_set[i]; | |
302 | ||
303 | if (tx_mcs_set_cap & IEEE80211_HT_CAP_MCS_TX_UEQM) | |
304 | for (i = IEEE80211_SUPP_MCS_SET_UEQM; | |
305 | i < IEEE80211_SUPP_MCS_SET_LEN; i++) | |
306 | ht_conf.supp_mcs_set[i] = | |
307 | sband->ht_info.supp_mcs_set[i] & | |
308 | req_ht_cap->supp_mcs_set[i]; | |
309 | ||
310 | check_changed: | |
311 | /* if bss configuration changed store the new one */ | |
312 | if (memcmp(&conf->ht_conf, &ht_conf, sizeof(ht_conf)) || | |
313 | memcmp(&conf->ht_bss_conf, &ht_bss_conf, sizeof(ht_bss_conf))) { | |
314 | changed |= BSS_CHANGED_HT; | |
315 | memcpy(&conf->ht_conf, &ht_conf, sizeof(ht_conf)); | |
316 | memcpy(&conf->ht_bss_conf, &ht_bss_conf, sizeof(ht_bss_conf)); | |
317 | } | |
318 | out: | |
38668c05 | 319 | return changed; |
d3c990fb RR |
320 | } |
321 | ||
471b3efd JB |
322 | void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, |
323 | u32 changed) | |
d9430a32 | 324 | { |
471b3efd JB |
325 | struct ieee80211_local *local = sdata->local; |
326 | ||
7a725f73 JB |
327 | if (WARN_ON(sdata->vif.type == NL80211_IFTYPE_AP_VLAN)) |
328 | return; | |
329 | ||
471b3efd JB |
330 | if (!changed) |
331 | return; | |
332 | ||
333 | if (local->ops->bss_info_changed) | |
334 | local->ops->bss_info_changed(local_to_hw(local), | |
335 | &sdata->vif, | |
336 | &sdata->bss_conf, | |
337 | changed); | |
d9430a32 DD |
338 | } |
339 | ||
f698d856 | 340 | u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata) |
d9430a32 | 341 | { |
471b3efd JB |
342 | sdata->bss_conf.use_cts_prot = 0; |
343 | sdata->bss_conf.use_short_preamble = 0; | |
fc32f924 | 344 | return BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_ERP_PREAMBLE; |
d9430a32 DD |
345 | } |
346 | ||
f0706e82 | 347 | void ieee80211_tx_status_irqsafe(struct ieee80211_hw *hw, |
e039fa4a | 348 | struct sk_buff *skb) |
f0706e82 JB |
349 | { |
350 | struct ieee80211_local *local = hw_to_local(hw); | |
e039fa4a | 351 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
f0706e82 JB |
352 | int tmp; |
353 | ||
354 | skb->dev = local->mdev; | |
f0706e82 | 355 | skb->pkt_type = IEEE80211_TX_STATUS_MSG; |
e039fa4a | 356 | skb_queue_tail(info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS ? |
f0706e82 JB |
357 | &local->skb_queue : &local->skb_queue_unreliable, skb); |
358 | tmp = skb_queue_len(&local->skb_queue) + | |
359 | skb_queue_len(&local->skb_queue_unreliable); | |
360 | while (tmp > IEEE80211_IRQSAFE_QUEUE_LIMIT && | |
361 | (skb = skb_dequeue(&local->skb_queue_unreliable))) { | |
f0706e82 JB |
362 | dev_kfree_skb_irq(skb); |
363 | tmp--; | |
364 | I802_DEBUG_INC(local->tx_status_drop); | |
365 | } | |
366 | tasklet_schedule(&local->tasklet); | |
367 | } | |
368 | EXPORT_SYMBOL(ieee80211_tx_status_irqsafe); | |
369 | ||
370 | static void ieee80211_tasklet_handler(unsigned long data) | |
371 | { | |
372 | struct ieee80211_local *local = (struct ieee80211_local *) data; | |
373 | struct sk_buff *skb; | |
374 | struct ieee80211_rx_status rx_status; | |
eadc8d9e | 375 | struct ieee80211_ra_tid *ra_tid; |
f0706e82 JB |
376 | |
377 | while ((skb = skb_dequeue(&local->skb_queue)) || | |
378 | (skb = skb_dequeue(&local->skb_queue_unreliable))) { | |
379 | switch (skb->pkt_type) { | |
380 | case IEEE80211_RX_MSG: | |
381 | /* status is in skb->cb */ | |
382 | memcpy(&rx_status, skb->cb, sizeof(rx_status)); | |
51fb61e7 | 383 | /* Clear skb->pkt_type in order to not confuse kernel |
f0706e82 JB |
384 | * netstack. */ |
385 | skb->pkt_type = 0; | |
386 | __ieee80211_rx(local_to_hw(local), skb, &rx_status); | |
387 | break; | |
388 | case IEEE80211_TX_STATUS_MSG: | |
f0706e82 | 389 | skb->pkt_type = 0; |
e039fa4a | 390 | ieee80211_tx_status(local_to_hw(local), skb); |
f0706e82 | 391 | break; |
eadc8d9e RR |
392 | case IEEE80211_DELBA_MSG: |
393 | ra_tid = (struct ieee80211_ra_tid *) &skb->cb; | |
394 | ieee80211_stop_tx_ba_cb(local_to_hw(local), | |
395 | ra_tid->ra, ra_tid->tid); | |
396 | dev_kfree_skb(skb); | |
397 | break; | |
398 | case IEEE80211_ADDBA_MSG: | |
399 | ra_tid = (struct ieee80211_ra_tid *) &skb->cb; | |
400 | ieee80211_start_tx_ba_cb(local_to_hw(local), | |
401 | ra_tid->ra, ra_tid->tid); | |
402 | dev_kfree_skb(skb); | |
403 | break ; | |
f4ea83dd JB |
404 | default: |
405 | WARN_ON(1); | |
f0706e82 JB |
406 | dev_kfree_skb(skb); |
407 | break; | |
408 | } | |
409 | } | |
410 | } | |
411 | ||
f0706e82 JB |
412 | /* Remove added headers (e.g., QoS control), encryption header/MIC, etc. to |
413 | * make a prepared TX frame (one that has been given to hw) to look like brand | |
414 | * new IEEE 802.11 frame that is ready to go through TX processing again. | |
d0f09804 | 415 | */ |
f0706e82 JB |
416 | static void ieee80211_remove_tx_extra(struct ieee80211_local *local, |
417 | struct ieee80211_key *key, | |
e039fa4a | 418 | struct sk_buff *skb) |
f0706e82 | 419 | { |
62bf1d76 HH |
420 | unsigned int hdrlen, iv_len, mic_len; |
421 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; | |
f0706e82 | 422 | |
62bf1d76 | 423 | hdrlen = ieee80211_hdrlen(hdr->frame_control); |
f0706e82 JB |
424 | |
425 | if (!key) | |
426 | goto no_key; | |
427 | ||
8f20fc24 | 428 | switch (key->conf.alg) { |
f0706e82 JB |
429 | case ALG_WEP: |
430 | iv_len = WEP_IV_LEN; | |
431 | mic_len = WEP_ICV_LEN; | |
432 | break; | |
433 | case ALG_TKIP: | |
434 | iv_len = TKIP_IV_LEN; | |
435 | mic_len = TKIP_ICV_LEN; | |
436 | break; | |
437 | case ALG_CCMP: | |
438 | iv_len = CCMP_HDR_LEN; | |
439 | mic_len = CCMP_MIC_LEN; | |
440 | break; | |
441 | default: | |
442 | goto no_key; | |
443 | } | |
444 | ||
62bf1d76 | 445 | if (skb->len >= hdrlen + mic_len && |
11a843b7 | 446 | !(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)) |
f0706e82 | 447 | skb_trim(skb, skb->len - mic_len); |
62bf1d76 | 448 | if (skb->len >= hdrlen + iv_len) { |
f0706e82 | 449 | memmove(skb->data + iv_len, skb->data, hdrlen); |
62bf1d76 | 450 | hdr = (struct ieee80211_hdr *)skb_pull(skb, iv_len); |
f0706e82 JB |
451 | } |
452 | ||
453 | no_key: | |
62bf1d76 HH |
454 | if (ieee80211_is_data_qos(hdr->frame_control)) { |
455 | hdr->frame_control &= ~cpu_to_le16(IEEE80211_STYPE_QOS_DATA); | |
456 | memmove(skb->data + IEEE80211_QOS_CTL_LEN, skb->data, | |
457 | hdrlen - IEEE80211_QOS_CTL_LEN); | |
458 | skb_pull(skb, IEEE80211_QOS_CTL_LEN); | |
f0706e82 JB |
459 | } |
460 | } | |
461 | ||
d46e144b JB |
462 | static void ieee80211_handle_filtered_frame(struct ieee80211_local *local, |
463 | struct sta_info *sta, | |
e039fa4a | 464 | struct sk_buff *skb) |
d46e144b | 465 | { |
e039fa4a JB |
466 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
467 | ||
d46e144b JB |
468 | sta->tx_filtered_count++; |
469 | ||
470 | /* | |
471 | * Clear the TX filter mask for this STA when sending the next | |
472 | * packet. If the STA went to power save mode, this will happen | |
f6d97104 | 473 | * when it wakes up for the next time. |
d46e144b | 474 | */ |
07346f81 | 475 | set_sta_flags(sta, WLAN_STA_CLEAR_PS_FILT); |
d46e144b JB |
476 | |
477 | /* | |
478 | * This code races in the following way: | |
479 | * | |
480 | * (1) STA sends frame indicating it will go to sleep and does so | |
481 | * (2) hardware/firmware adds STA to filter list, passes frame up | |
482 | * (3) hardware/firmware processes TX fifo and suppresses a frame | |
483 | * (4) we get TX status before having processed the frame and | |
484 | * knowing that the STA has gone to sleep. | |
485 | * | |
486 | * This is actually quite unlikely even when both those events are | |
487 | * processed from interrupts coming in quickly after one another or | |
488 | * even at the same time because we queue both TX status events and | |
489 | * RX frames to be processed by a tasklet and process them in the | |
490 | * same order that they were received or TX status last. Hence, there | |
491 | * is no race as long as the frame RX is processed before the next TX | |
492 | * status, which drivers can ensure, see below. | |
493 | * | |
494 | * Note that this can only happen if the hardware or firmware can | |
495 | * actually add STAs to the filter list, if this is done by the | |
496 | * driver in response to set_tim() (which will only reduce the race | |
497 | * this whole filtering tries to solve, not completely solve it) | |
498 | * this situation cannot happen. | |
499 | * | |
500 | * To completely solve this race drivers need to make sure that they | |
501 | * (a) don't mix the irq-safe/not irq-safe TX status/RX processing | |
502 | * functions and | |
503 | * (b) always process RX events before TX status events if ordering | |
504 | * can be unknown, for example with different interrupt status | |
505 | * bits. | |
506 | */ | |
07346f81 | 507 | if (test_sta_flags(sta, WLAN_STA_PS) && |
d46e144b | 508 | skb_queue_len(&sta->tx_filtered) < STA_MAX_TX_BUFFER) { |
e039fa4a | 509 | ieee80211_remove_tx_extra(local, sta->key, skb); |
d46e144b JB |
510 | skb_queue_tail(&sta->tx_filtered, skb); |
511 | return; | |
512 | } | |
513 | ||
07346f81 | 514 | if (!test_sta_flags(sta, WLAN_STA_PS) && |
e039fa4a | 515 | !(info->flags & IEEE80211_TX_CTL_REQUEUE)) { |
d46e144b | 516 | /* Software retry the packet once */ |
e039fa4a JB |
517 | info->flags |= IEEE80211_TX_CTL_REQUEUE; |
518 | ieee80211_remove_tx_extra(local, sta->key, skb); | |
d46e144b JB |
519 | dev_queue_xmit(skb); |
520 | return; | |
521 | } | |
522 | ||
f4ea83dd | 523 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
d46e144b JB |
524 | if (net_ratelimit()) |
525 | printk(KERN_DEBUG "%s: dropped TX filtered frame, " | |
526 | "queue_len=%d PS=%d @%lu\n", | |
527 | wiphy_name(local->hw.wiphy), | |
528 | skb_queue_len(&sta->tx_filtered), | |
07346f81 | 529 | !!test_sta_flags(sta, WLAN_STA_PS), jiffies); |
f4ea83dd | 530 | #endif |
d46e144b JB |
531 | dev_kfree_skb(skb); |
532 | } | |
533 | ||
e039fa4a | 534 | void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb) |
f0706e82 JB |
535 | { |
536 | struct sk_buff *skb2; | |
537 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; | |
538 | struct ieee80211_local *local = hw_to_local(hw); | |
e039fa4a | 539 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
f0706e82 | 540 | u16 frag, type; |
429a3805 | 541 | __le16 fc; |
b306f453 JB |
542 | struct ieee80211_tx_status_rtap_hdr *rthdr; |
543 | struct ieee80211_sub_if_data *sdata; | |
3d30d949 | 544 | struct net_device *prev_dev = NULL; |
429a3805 | 545 | struct sta_info *sta; |
f0706e82 | 546 | |
d0709a65 JB |
547 | rcu_read_lock(); |
548 | ||
95dac040 JB |
549 | sta = sta_info_get(local, hdr->addr1); |
550 | ||
551 | if (sta) { | |
552 | if (info->status.excessive_retries && | |
553 | test_sta_flags(sta, WLAN_STA_PS)) { | |
554 | /* | |
555 | * The STA is in power save mode, so assume | |
556 | * that this TX packet failed because of that. | |
557 | */ | |
558 | ieee80211_handle_filtered_frame(local, sta, skb); | |
559 | rcu_read_unlock(); | |
560 | return; | |
f0706e82 | 561 | } |
f0706e82 | 562 | |
95dac040 JB |
563 | fc = hdr->frame_control; |
564 | ||
565 | if ((info->flags & IEEE80211_TX_STAT_AMPDU_NO_BACK) && | |
566 | (ieee80211_is_data_qos(fc))) { | |
567 | u16 tid, ssn; | |
568 | u8 *qc; | |
429a3805 | 569 | |
429a3805 RR |
570 | qc = ieee80211_get_qos_ctl(hdr); |
571 | tid = qc[0] & 0xf; | |
572 | ssn = ((le16_to_cpu(hdr->seq_ctrl) + 0x10) | |
573 | & IEEE80211_SCTL_SEQ); | |
f698d856 | 574 | ieee80211_send_bar(sta->sdata, hdr->addr1, |
429a3805 RR |
575 | tid, ssn); |
576 | } | |
429a3805 | 577 | |
95dac040 | 578 | if (info->flags & IEEE80211_TX_STAT_TX_FILTERED) { |
e039fa4a | 579 | ieee80211_handle_filtered_frame(local, sta, skb); |
d0709a65 | 580 | rcu_read_unlock(); |
f0706e82 | 581 | return; |
95dac040 JB |
582 | } else { |
583 | if (info->status.excessive_retries) | |
584 | sta->tx_retry_failed++; | |
585 | sta->tx_retry_count += info->status.retry_count; | |
f0706e82 | 586 | } |
95dac040 | 587 | |
e039fa4a | 588 | rate_control_tx_status(local->mdev, skb); |
95dac040 | 589 | } |
f0706e82 | 590 | |
d0709a65 JB |
591 | rcu_read_unlock(); |
592 | ||
f0706e82 JB |
593 | ieee80211_led_tx(local, 0); |
594 | ||
595 | /* SNMP counters | |
596 | * Fragments are passed to low-level drivers as separate skbs, so these | |
597 | * are actually fragments, not frames. Update frame counters only for | |
598 | * the first fragment of the frame. */ | |
599 | ||
600 | frag = le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_FRAG; | |
601 | type = le16_to_cpu(hdr->frame_control) & IEEE80211_FCTL_FTYPE; | |
602 | ||
e039fa4a | 603 | if (info->flags & IEEE80211_TX_STAT_ACK) { |
f0706e82 JB |
604 | if (frag == 0) { |
605 | local->dot11TransmittedFrameCount++; | |
606 | if (is_multicast_ether_addr(hdr->addr1)) | |
607 | local->dot11MulticastTransmittedFrameCount++; | |
e039fa4a | 608 | if (info->status.retry_count > 0) |
f0706e82 | 609 | local->dot11RetryCount++; |
e039fa4a | 610 | if (info->status.retry_count > 1) |
f0706e82 JB |
611 | local->dot11MultipleRetryCount++; |
612 | } | |
613 | ||
614 | /* This counter shall be incremented for an acknowledged MPDU | |
615 | * with an individual address in the address 1 field or an MPDU | |
616 | * with a multicast address in the address 1 field of type Data | |
617 | * or Management. */ | |
618 | if (!is_multicast_ether_addr(hdr->addr1) || | |
619 | type == IEEE80211_FTYPE_DATA || | |
620 | type == IEEE80211_FTYPE_MGMT) | |
621 | local->dot11TransmittedFragmentCount++; | |
622 | } else { | |
623 | if (frag == 0) | |
624 | local->dot11FailedCount++; | |
625 | } | |
626 | ||
b306f453 JB |
627 | /* this was a transmitted frame, but now we want to reuse it */ |
628 | skb_orphan(skb); | |
629 | ||
3d30d949 MW |
630 | /* |
631 | * This is a bit racy but we can avoid a lot of work | |
632 | * with this test... | |
633 | */ | |
634 | if (!local->monitors && !local->cooked_mntrs) { | |
f0706e82 JB |
635 | dev_kfree_skb(skb); |
636 | return; | |
637 | } | |
638 | ||
b306f453 | 639 | /* send frame to monitor interfaces now */ |
f0706e82 | 640 | |
b306f453 JB |
641 | if (skb_headroom(skb) < sizeof(*rthdr)) { |
642 | printk(KERN_ERR "ieee80211_tx_status: headroom too small\n"); | |
f0706e82 JB |
643 | dev_kfree_skb(skb); |
644 | return; | |
645 | } | |
f0706e82 | 646 | |
988c0f72 | 647 | rthdr = (struct ieee80211_tx_status_rtap_hdr *) |
b306f453 JB |
648 | skb_push(skb, sizeof(*rthdr)); |
649 | ||
650 | memset(rthdr, 0, sizeof(*rthdr)); | |
651 | rthdr->hdr.it_len = cpu_to_le16(sizeof(*rthdr)); | |
652 | rthdr->hdr.it_present = | |
653 | cpu_to_le32((1 << IEEE80211_RADIOTAP_TX_FLAGS) | | |
654 | (1 << IEEE80211_RADIOTAP_DATA_RETRIES)); | |
655 | ||
e039fa4a | 656 | if (!(info->flags & IEEE80211_TX_STAT_ACK) && |
b306f453 JB |
657 | !is_multicast_ether_addr(hdr->addr1)) |
658 | rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_FAIL); | |
659 | ||
e039fa4a JB |
660 | if ((info->flags & IEEE80211_TX_CTL_USE_RTS_CTS) && |
661 | (info->flags & IEEE80211_TX_CTL_USE_CTS_PROTECT)) | |
b306f453 | 662 | rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_CTS); |
e039fa4a | 663 | else if (info->flags & IEEE80211_TX_CTL_USE_RTS_CTS) |
b306f453 JB |
664 | rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_RTS); |
665 | ||
e039fa4a | 666 | rthdr->data_retries = info->status.retry_count; |
b306f453 | 667 | |
3d30d949 MW |
668 | /* XXX: is this sufficient for BPF? */ |
669 | skb_set_mac_header(skb, 0); | |
670 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
671 | skb->pkt_type = PACKET_OTHERHOST; | |
672 | skb->protocol = htons(ETH_P_802_2); | |
673 | memset(skb->cb, 0, sizeof(skb->cb)); | |
674 | ||
79010420 | 675 | rcu_read_lock(); |
79010420 | 676 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
05c914fe | 677 | if (sdata->vif.type == NL80211_IFTYPE_MONITOR) { |
b306f453 JB |
678 | if (!netif_running(sdata->dev)) |
679 | continue; | |
3d30d949 MW |
680 | |
681 | if (prev_dev) { | |
79010420 | 682 | skb2 = skb_clone(skb, GFP_ATOMIC); |
3d30d949 MW |
683 | if (skb2) { |
684 | skb2->dev = prev_dev; | |
685 | netif_rx(skb2); | |
686 | } | |
687 | } | |
688 | ||
689 | prev_dev = sdata->dev; | |
b306f453 JB |
690 | } |
691 | } | |
3d30d949 MW |
692 | if (prev_dev) { |
693 | skb->dev = prev_dev; | |
694 | netif_rx(skb); | |
695 | skb = NULL; | |
696 | } | |
79010420 | 697 | rcu_read_unlock(); |
3d30d949 | 698 | dev_kfree_skb(skb); |
f0706e82 JB |
699 | } |
700 | EXPORT_SYMBOL(ieee80211_tx_status); | |
701 | ||
f0706e82 JB |
702 | struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len, |
703 | const struct ieee80211_ops *ops) | |
704 | { | |
f0706e82 | 705 | struct ieee80211_local *local; |
f0706e82 JB |
706 | int priv_size; |
707 | struct wiphy *wiphy; | |
708 | ||
709 | /* Ensure 32-byte alignment of our private data and hw private data. | |
710 | * We use the wiphy priv data for both our ieee80211_local and for | |
711 | * the driver's private data | |
712 | * | |
713 | * In memory it'll be like this: | |
714 | * | |
715 | * +-------------------------+ | |
716 | * | struct wiphy | | |
717 | * +-------------------------+ | |
718 | * | struct ieee80211_local | | |
719 | * +-------------------------+ | |
720 | * | driver's private data | | |
721 | * +-------------------------+ | |
722 | * | |
723 | */ | |
724 | priv_size = ((sizeof(struct ieee80211_local) + | |
725 | NETDEV_ALIGN_CONST) & ~NETDEV_ALIGN_CONST) + | |
726 | priv_data_len; | |
727 | ||
728 | wiphy = wiphy_new(&mac80211_config_ops, priv_size); | |
729 | ||
730 | if (!wiphy) | |
731 | return NULL; | |
732 | ||
733 | wiphy->privid = mac80211_wiphy_privid; | |
734 | ||
735 | local = wiphy_priv(wiphy); | |
736 | local->hw.wiphy = wiphy; | |
737 | ||
738 | local->hw.priv = (char *)local + | |
739 | ((sizeof(struct ieee80211_local) + | |
740 | NETDEV_ALIGN_CONST) & ~NETDEV_ALIGN_CONST); | |
741 | ||
4480f15c | 742 | BUG_ON(!ops->tx); |
4150c572 JB |
743 | BUG_ON(!ops->start); |
744 | BUG_ON(!ops->stop); | |
4480f15c JB |
745 | BUG_ON(!ops->config); |
746 | BUG_ON(!ops->add_interface); | |
4150c572 JB |
747 | BUG_ON(!ops->remove_interface); |
748 | BUG_ON(!ops->configure_filter); | |
f0706e82 JB |
749 | local->ops = ops; |
750 | ||
f0706e82 JB |
751 | local->hw.queues = 1; /* default */ |
752 | ||
f0706e82 JB |
753 | local->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD; |
754 | local->fragmentation_threshold = IEEE80211_MAX_FRAG_THRESHOLD; | |
755 | local->short_retry_limit = 7; | |
756 | local->long_retry_limit = 4; | |
757 | local->hw.conf.radio_enabled = 1; | |
f0706e82 | 758 | |
79010420 | 759 | INIT_LIST_HEAD(&local->interfaces); |
f0706e82 | 760 | |
b16bd15c JB |
761 | spin_lock_init(&local->key_lock); |
762 | ||
c2b13452 | 763 | INIT_DELAYED_WORK(&local->scan_work, ieee80211_scan_work); |
f0706e82 JB |
764 | |
765 | sta_info_init(local); | |
766 | ||
f0706e82 JB |
767 | tasklet_init(&local->tx_pending_tasklet, ieee80211_tx_pending, |
768 | (unsigned long)local); | |
769 | tasklet_disable(&local->tx_pending_tasklet); | |
770 | ||
771 | tasklet_init(&local->tasklet, | |
772 | ieee80211_tasklet_handler, | |
773 | (unsigned long) local); | |
774 | tasklet_disable(&local->tasklet); | |
775 | ||
776 | skb_queue_head_init(&local->skb_queue); | |
777 | skb_queue_head_init(&local->skb_queue_unreliable); | |
778 | ||
779 | return local_to_hw(local); | |
780 | } | |
781 | EXPORT_SYMBOL(ieee80211_alloc_hw); | |
782 | ||
783 | int ieee80211_register_hw(struct ieee80211_hw *hw) | |
784 | { | |
785 | struct ieee80211_local *local = hw_to_local(hw); | |
786 | const char *name; | |
787 | int result; | |
8318d78a | 788 | enum ieee80211_band band; |
96d51056 | 789 | struct net_device *mdev; |
3e122be0 | 790 | struct wireless_dev *mwdev; |
8318d78a JB |
791 | |
792 | /* | |
793 | * generic code guarantees at least one band, | |
794 | * set this very early because much code assumes | |
795 | * that hw.conf.channel is assigned | |
796 | */ | |
797 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { | |
798 | struct ieee80211_supported_band *sband; | |
799 | ||
800 | sband = local->hw.wiphy->bands[band]; | |
801 | if (sband) { | |
802 | /* init channel we're on */ | |
803 | local->hw.conf.channel = | |
804 | local->oper_channel = | |
805 | local->scan_channel = &sband->channels[0]; | |
806 | break; | |
807 | } | |
808 | } | |
f0706e82 | 809 | |
f59ac048 LR |
810 | /* if low-level driver supports AP, we also support VLAN */ |
811 | if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) | |
812 | local->hw.wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP_VLAN); | |
813 | ||
814 | /* mac80211 always supports monitor */ | |
815 | local->hw.wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR); | |
816 | ||
f0706e82 JB |
817 | result = wiphy_register(local->hw.wiphy); |
818 | if (result < 0) | |
819 | return result; | |
820 | ||
e2530083 JB |
821 | /* |
822 | * We use the number of queues for feature tests (QoS, HT) internally | |
823 | * so restrict them appropriately. | |
824 | */ | |
e2530083 JB |
825 | if (hw->queues > IEEE80211_MAX_QUEUES) |
826 | hw->queues = IEEE80211_MAX_QUEUES; | |
827 | if (hw->ampdu_queues > IEEE80211_MAX_AMPDU_QUEUES) | |
828 | hw->ampdu_queues = IEEE80211_MAX_AMPDU_QUEUES; | |
829 | if (hw->queues < 4) | |
830 | hw->ampdu_queues = 0; | |
e2530083 | 831 | |
3e122be0 | 832 | mdev = alloc_netdev_mq(sizeof(struct wireless_dev), |
e2530083 JB |
833 | "wmaster%d", ether_setup, |
834 | ieee80211_num_queues(hw)); | |
96d51056 JB |
835 | if (!mdev) |
836 | goto fail_mdev_alloc; | |
837 | ||
3e122be0 JB |
838 | mwdev = netdev_priv(mdev); |
839 | mdev->ieee80211_ptr = mwdev; | |
840 | mwdev->wiphy = local->hw.wiphy; | |
96d51056 JB |
841 | |
842 | local->mdev = mdev; | |
843 | ||
3e122be0 | 844 | ieee80211_rx_bss_list_init(local); |
96d51056 JB |
845 | |
846 | mdev->hard_start_xmit = ieee80211_master_start_xmit; | |
847 | mdev->open = ieee80211_master_open; | |
848 | mdev->stop = ieee80211_master_stop; | |
849 | mdev->type = ARPHRD_IEEE80211; | |
850 | mdev->header_ops = &ieee80211_header_ops; | |
851 | mdev->set_multicast_list = ieee80211_master_set_multicast_list; | |
852 | ||
f0706e82 | 853 | name = wiphy_dev(local->hw.wiphy)->driver->name; |
59959a61 | 854 | local->hw.workqueue = create_freezeable_workqueue(name); |
f0706e82 JB |
855 | if (!local->hw.workqueue) { |
856 | result = -ENOMEM; | |
857 | goto fail_workqueue; | |
858 | } | |
859 | ||
b306f453 JB |
860 | /* |
861 | * The hardware needs headroom for sending the frame, | |
862 | * and we need some headroom for passing the frame to monitor | |
863 | * interfaces, but never both at the same time. | |
864 | */ | |
33ccad35 JB |
865 | local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom, |
866 | sizeof(struct ieee80211_tx_status_rtap_hdr)); | |
b306f453 | 867 | |
e9f207f0 JB |
868 | debugfs_hw_add(local); |
869 | ||
dc0ae30c TW |
870 | if (local->hw.conf.beacon_int < 10) |
871 | local->hw.conf.beacon_int = 100; | |
f0706e82 | 872 | |
ea95bba4 TW |
873 | if (local->hw.max_listen_interval == 0) |
874 | local->hw.max_listen_interval = 1; | |
875 | ||
876 | local->hw.conf.listen_interval = local->hw.max_listen_interval; | |
877 | ||
566bfe5a BR |
878 | local->wstats_flags |= local->hw.flags & (IEEE80211_HW_SIGNAL_UNSPEC | |
879 | IEEE80211_HW_SIGNAL_DB | | |
880 | IEEE80211_HW_SIGNAL_DBM) ? | |
f0706e82 | 881 | IW_QUAL_QUAL_UPDATED : IW_QUAL_QUAL_INVALID; |
566bfe5a | 882 | local->wstats_flags |= local->hw.flags & IEEE80211_HW_NOISE_DBM ? |
f0706e82 | 883 | IW_QUAL_NOISE_UPDATED : IW_QUAL_NOISE_INVALID; |
566bfe5a | 884 | if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM) |
f0706e82 JB |
885 | local->wstats_flags |= IW_QUAL_DBM; |
886 | ||
887 | result = sta_info_start(local); | |
888 | if (result < 0) | |
889 | goto fail_sta_info; | |
890 | ||
891 | rtnl_lock(); | |
892 | result = dev_alloc_name(local->mdev, local->mdev->name); | |
893 | if (result < 0) | |
894 | goto fail_dev; | |
895 | ||
896 | memcpy(local->mdev->dev_addr, local->hw.wiphy->perm_addr, ETH_ALEN); | |
897 | SET_NETDEV_DEV(local->mdev, wiphy_dev(local->hw.wiphy)); | |
898 | ||
899 | result = register_netdevice(local->mdev); | |
900 | if (result < 0) | |
901 | goto fail_dev; | |
902 | ||
830f9038 JB |
903 | result = ieee80211_init_rate_ctrl_alg(local, |
904 | hw->rate_control_algorithm); | |
f0706e82 JB |
905 | if (result < 0) { |
906 | printk(KERN_DEBUG "%s: Failed to initialize rate control " | |
dd1cd4c6 | 907 | "algorithm\n", wiphy_name(local->hw.wiphy)); |
f0706e82 JB |
908 | goto fail_rate; |
909 | } | |
910 | ||
911 | result = ieee80211_wep_init(local); | |
912 | ||
913 | if (result < 0) { | |
023a04be JF |
914 | printk(KERN_DEBUG "%s: Failed to initialize wep: %d\n", |
915 | wiphy_name(local->hw.wiphy), result); | |
f0706e82 JB |
916 | goto fail_wep; |
917 | } | |
918 | ||
51cb6db0 | 919 | local->mdev->select_queue = ieee80211_select_queue; |
f0706e82 JB |
920 | |
921 | /* add one default STA interface */ | |
3e122be0 | 922 | result = ieee80211_if_add(local, "wlan%d", NULL, |
05c914fe | 923 | NL80211_IFTYPE_STATION, NULL); |
f0706e82 JB |
924 | if (result) |
925 | printk(KERN_WARNING "%s: Failed to add default virtual iface\n", | |
dd1cd4c6 | 926 | wiphy_name(local->hw.wiphy)); |
f0706e82 | 927 | |
f0706e82 JB |
928 | rtnl_unlock(); |
929 | ||
930 | ieee80211_led_init(local); | |
931 | ||
932 | return 0; | |
933 | ||
934 | fail_wep: | |
935 | rate_control_deinitialize(local); | |
936 | fail_rate: | |
937 | unregister_netdevice(local->mdev); | |
339a7c41 | 938 | local->mdev = NULL; |
f0706e82 JB |
939 | fail_dev: |
940 | rtnl_unlock(); | |
941 | sta_info_stop(local); | |
942 | fail_sta_info: | |
e9f207f0 | 943 | debugfs_hw_del(local); |
f0706e82 JB |
944 | destroy_workqueue(local->hw.workqueue); |
945 | fail_workqueue: | |
3e122be0 JB |
946 | if (local->mdev) |
947 | free_netdev(local->mdev); | |
96d51056 | 948 | fail_mdev_alloc: |
f0706e82 JB |
949 | wiphy_unregister(local->hw.wiphy); |
950 | return result; | |
951 | } | |
952 | EXPORT_SYMBOL(ieee80211_register_hw); | |
953 | ||
f0706e82 JB |
954 | void ieee80211_unregister_hw(struct ieee80211_hw *hw) |
955 | { | |
956 | struct ieee80211_local *local = hw_to_local(hw); | |
f0706e82 JB |
957 | |
958 | tasklet_kill(&local->tx_pending_tasklet); | |
959 | tasklet_kill(&local->tasklet); | |
960 | ||
961 | rtnl_lock(); | |
962 | ||
79010420 JB |
963 | /* |
964 | * At this point, interface list manipulations are fine | |
965 | * because the driver cannot be handing us frames any | |
966 | * more and the tasklet is killed. | |
967 | */ | |
5b2812e9 | 968 | |
75636525 JB |
969 | /* First, we remove all virtual interfaces. */ |
970 | ieee80211_remove_interfaces(local); | |
5b2812e9 JB |
971 | |
972 | /* then, finally, remove the master interface */ | |
3e122be0 | 973 | unregister_netdevice(local->mdev); |
f0706e82 JB |
974 | |
975 | rtnl_unlock(); | |
976 | ||
3e122be0 | 977 | ieee80211_rx_bss_list_deinit(local); |
f0706e82 JB |
978 | ieee80211_clear_tx_pending(local); |
979 | sta_info_stop(local); | |
980 | rate_control_deinitialize(local); | |
e9f207f0 | 981 | debugfs_hw_del(local); |
f0706e82 | 982 | |
f0706e82 JB |
983 | if (skb_queue_len(&local->skb_queue) |
984 | || skb_queue_len(&local->skb_queue_unreliable)) | |
985 | printk(KERN_WARNING "%s: skb_queue not empty\n", | |
dd1cd4c6 | 986 | wiphy_name(local->hw.wiphy)); |
f0706e82 JB |
987 | skb_queue_purge(&local->skb_queue); |
988 | skb_queue_purge(&local->skb_queue_unreliable); | |
989 | ||
990 | destroy_workqueue(local->hw.workqueue); | |
991 | wiphy_unregister(local->hw.wiphy); | |
992 | ieee80211_wep_free(local); | |
993 | ieee80211_led_exit(local); | |
3e122be0 | 994 | free_netdev(local->mdev); |
f0706e82 JB |
995 | } |
996 | EXPORT_SYMBOL(ieee80211_unregister_hw); | |
997 | ||
998 | void ieee80211_free_hw(struct ieee80211_hw *hw) | |
999 | { | |
1000 | struct ieee80211_local *local = hw_to_local(hw); | |
1001 | ||
f0706e82 JB |
1002 | wiphy_free(local->hw.wiphy); |
1003 | } | |
1004 | EXPORT_SYMBOL(ieee80211_free_hw); | |
1005 | ||
f0706e82 JB |
1006 | static int __init ieee80211_init(void) |
1007 | { | |
1008 | struct sk_buff *skb; | |
1009 | int ret; | |
1010 | ||
e039fa4a JB |
1011 | BUILD_BUG_ON(sizeof(struct ieee80211_tx_info) > sizeof(skb->cb)); |
1012 | BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, driver_data) + | |
1013 | IEEE80211_TX_INFO_DRIVER_DATA_SIZE > sizeof(skb->cb)); | |
f0706e82 | 1014 | |
4b475898 | 1015 | ret = rc80211_pid_init(); |
ad018375 | 1016 | if (ret) |
51cb6db0 | 1017 | return ret; |
f0706e82 | 1018 | |
e9f207f0 JB |
1019 | ieee80211_debugfs_netdev_init(); |
1020 | ||
f0706e82 JB |
1021 | return 0; |
1022 | } | |
1023 | ||
f0706e82 JB |
1024 | static void __exit ieee80211_exit(void) |
1025 | { | |
4b475898 | 1026 | rc80211_pid_exit(); |
ac71c691 | 1027 | |
3b96766f JB |
1028 | /* |
1029 | * For key todo, it'll be empty by now but the work | |
1030 | * might still be scheduled. | |
1031 | */ | |
1032 | flush_scheduled_work(); | |
1033 | ||
f7a92144 LCC |
1034 | if (mesh_allocated) |
1035 | ieee80211s_stop(); | |
902acc78 | 1036 | |
e9f207f0 | 1037 | ieee80211_debugfs_netdev_exit(); |
f0706e82 JB |
1038 | } |
1039 | ||
1040 | ||
ca9938fe | 1041 | subsys_initcall(ieee80211_init); |
f0706e82 JB |
1042 | module_exit(ieee80211_exit); |
1043 | ||
1044 | MODULE_DESCRIPTION("IEEE 802.11 subsystem"); | |
1045 | MODULE_LICENSE("GPL"); |