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Commit | Line | Data |
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f0706e82 JB |
1 | /* |
2 | * Copyright 2002-2005, Instant802 Networks, Inc. | |
3 | * Copyright 2005-2006, Devicescape Software, Inc. | |
4 | * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License version 2 as | |
8 | * published by the Free Software Foundation. | |
9 | */ | |
10 | ||
11 | #include <net/mac80211.h> | |
12 | #include <net/ieee80211_radiotap.h> | |
13 | #include <linux/module.h> | |
14 | #include <linux/init.h> | |
15 | #include <linux/netdevice.h> | |
16 | #include <linux/types.h> | |
17 | #include <linux/slab.h> | |
18 | #include <linux/skbuff.h> | |
19 | #include <linux/etherdevice.h> | |
20 | #include <linux/if_arp.h> | |
21 | #include <linux/wireless.h> | |
22 | #include <linux/rtnetlink.h> | |
f0706e82 | 23 | #include <linux/bitmap.h> |
881d966b | 24 | #include <net/net_namespace.h> |
f0706e82 JB |
25 | #include <net/cfg80211.h> |
26 | ||
f0706e82 | 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; | |
e6a9854b JB |
44 | u8 rate; |
45 | u8 padding_for_rate; | |
b306f453 JB |
46 | __le16 tx_flags; |
47 | u8 data_retries; | |
48 | } __attribute__ ((packed)); | |
49 | ||
f0706e82 | 50 | |
4150c572 | 51 | /* must be called under mdev tx lock */ |
0d143fe1 | 52 | void ieee80211_configure_filter(struct ieee80211_local *local) |
4150c572 JB |
53 | { |
54 | unsigned int changed_flags; | |
55 | unsigned int new_flags = 0; | |
56 | ||
53918994 | 57 | if (atomic_read(&local->iff_promiscs)) |
4150c572 JB |
58 | new_flags |= FIF_PROMISC_IN_BSS; |
59 | ||
53918994 | 60 | if (atomic_read(&local->iff_allmultis)) |
4150c572 JB |
61 | new_flags |= FIF_ALLMULTI; |
62 | ||
63 | if (local->monitors) | |
8cc9a739 MW |
64 | new_flags |= FIF_BCN_PRBRESP_PROMISC; |
65 | ||
66 | if (local->fif_fcsfail) | |
67 | new_flags |= FIF_FCSFAIL; | |
68 | ||
69 | if (local->fif_plcpfail) | |
70 | new_flags |= FIF_PLCPFAIL; | |
71 | ||
72 | if (local->fif_control) | |
73 | new_flags |= FIF_CONTROL; | |
74 | ||
75 | if (local->fif_other_bss) | |
76 | new_flags |= FIF_OTHER_BSS; | |
4150c572 JB |
77 | |
78 | changed_flags = local->filter_flags ^ new_flags; | |
79 | ||
80 | /* be a bit nasty */ | |
81 | new_flags |= (1<<31); | |
82 | ||
83 | local->ops->configure_filter(local_to_hw(local), | |
84 | changed_flags, &new_flags, | |
85 | local->mdev->mc_count, | |
86 | local->mdev->mc_list); | |
87 | ||
88 | WARN_ON(new_flags & (1<<31)); | |
89 | ||
90 | local->filter_flags = new_flags & ~(1<<31); | |
91 | } | |
92 | ||
b2c258fb | 93 | /* master interface */ |
f0706e82 | 94 | |
0d143fe1 JB |
95 | static int header_parse_80211(const struct sk_buff *skb, unsigned char *haddr) |
96 | { | |
97 | memcpy(haddr, skb_mac_header(skb) + 10, ETH_ALEN); /* addr2 */ | |
98 | return ETH_ALEN; | |
99 | } | |
100 | ||
101 | static const struct header_ops ieee80211_header_ops = { | |
102 | .create = eth_header, | |
103 | .parse = header_parse_80211, | |
104 | .rebuild = eth_rebuild_header, | |
105 | .cache = eth_header_cache, | |
106 | .cache_update = eth_header_cache_update, | |
107 | }; | |
108 | ||
b2c258fb JB |
109 | static int ieee80211_master_open(struct net_device *dev) |
110 | { | |
133b8226 JB |
111 | struct ieee80211_master_priv *mpriv = netdev_priv(dev); |
112 | struct ieee80211_local *local = mpriv->local; | |
b2c258fb JB |
113 | struct ieee80211_sub_if_data *sdata; |
114 | int res = -EOPNOTSUPP; | |
f0706e82 | 115 | |
79010420 JB |
116 | /* we hold the RTNL here so can safely walk the list */ |
117 | list_for_each_entry(sdata, &local->interfaces, list) { | |
3e122be0 | 118 | if (netif_running(sdata->dev)) { |
b2c258fb JB |
119 | res = 0; |
120 | break; | |
121 | } | |
122 | } | |
36d6825b JB |
123 | |
124 | if (res) | |
125 | return res; | |
126 | ||
51cb6db0 | 127 | netif_tx_start_all_queues(local->mdev); |
36d6825b JB |
128 | |
129 | return 0; | |
b2c258fb | 130 | } |
f0706e82 | 131 | |
b2c258fb | 132 | static int ieee80211_master_stop(struct net_device *dev) |
f0706e82 | 133 | { |
133b8226 JB |
134 | struct ieee80211_master_priv *mpriv = netdev_priv(dev); |
135 | struct ieee80211_local *local = mpriv->local; | |
b2c258fb | 136 | struct ieee80211_sub_if_data *sdata; |
f0706e82 | 137 | |
79010420 JB |
138 | /* we hold the RTNL here so can safely walk the list */ |
139 | list_for_each_entry(sdata, &local->interfaces, list) | |
3e122be0 | 140 | if (netif_running(sdata->dev)) |
b2c258fb | 141 | dev_close(sdata->dev); |
f0706e82 | 142 | |
b2c258fb JB |
143 | return 0; |
144 | } | |
f0706e82 | 145 | |
4150c572 JB |
146 | static void ieee80211_master_set_multicast_list(struct net_device *dev) |
147 | { | |
133b8226 JB |
148 | struct ieee80211_master_priv *mpriv = netdev_priv(dev); |
149 | struct ieee80211_local *local = mpriv->local; | |
4150c572 JB |
150 | |
151 | ieee80211_configure_filter(local); | |
152 | } | |
153 | ||
b2c258fb JB |
154 | /* everything else */ |
155 | ||
9d139c81 | 156 | int ieee80211_if_config(struct ieee80211_sub_if_data *sdata, u32 changed) |
b2c258fb | 157 | { |
9d139c81 | 158 | struct ieee80211_local *local = sdata->local; |
b2c258fb | 159 | struct ieee80211_if_conf conf; |
b2c258fb | 160 | |
9d139c81 JB |
161 | if (WARN_ON(!netif_running(sdata->dev))) |
162 | return 0; | |
163 | ||
b2c258fb | 164 | memset(&conf, 0, sizeof(conf)); |
9d139c81 | 165 | |
46900298 JB |
166 | if (sdata->vif.type == NL80211_IFTYPE_STATION) |
167 | conf.bssid = sdata->u.mgd.bssid; | |
168 | else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) | |
169 | conf.bssid = sdata->u.ibss.bssid; | |
41bb73ee | 170 | else if (sdata->vif.type == NL80211_IFTYPE_AP) |
9d139c81 | 171 | conf.bssid = sdata->dev->dev_addr; |
41bb73ee | 172 | else if (ieee80211_vif_is_mesh(&sdata->vif)) { |
5f936f11 | 173 | static const u8 zero[ETH_ALEN] = { 0 }; |
9d139c81 | 174 | conf.bssid = zero; |
9d139c81 JB |
175 | } else { |
176 | WARN_ON(1); | |
177 | return -EINVAL; | |
f0706e82 | 178 | } |
f0706e82 | 179 | |
b5bde374 JB |
180 | if (!local->ops->config_interface) |
181 | return 0; | |
182 | ||
078e1e60 JB |
183 | switch (sdata->vif.type) { |
184 | case NL80211_IFTYPE_AP: | |
185 | case NL80211_IFTYPE_ADHOC: | |
186 | case NL80211_IFTYPE_MESH_POINT: | |
187 | break; | |
188 | default: | |
189 | /* do not warn to simplify caller in scan.c */ | |
190 | changed &= ~IEEE80211_IFCC_BEACON_ENABLED; | |
191 | if (WARN_ON(changed & IEEE80211_IFCC_BEACON)) | |
192 | return -EINVAL; | |
193 | changed &= ~IEEE80211_IFCC_BEACON; | |
194 | break; | |
195 | } | |
196 | ||
197 | if (changed & IEEE80211_IFCC_BEACON_ENABLED) { | |
198 | if (local->sw_scanning) { | |
199 | conf.enable_beacon = false; | |
200 | } else { | |
201 | /* | |
202 | * Beacon should be enabled, but AP mode must | |
203 | * check whether there is a beacon configured. | |
204 | */ | |
205 | switch (sdata->vif.type) { | |
206 | case NL80211_IFTYPE_AP: | |
207 | conf.enable_beacon = | |
208 | !!rcu_dereference(sdata->u.ap.beacon); | |
209 | break; | |
210 | case NL80211_IFTYPE_ADHOC: | |
46900298 | 211 | conf.enable_beacon = !!sdata->u.ibss.probe_resp; |
5e133362 | 212 | break; |
078e1e60 JB |
213 | case NL80211_IFTYPE_MESH_POINT: |
214 | conf.enable_beacon = true; | |
215 | break; | |
216 | default: | |
217 | /* not reached */ | |
218 | WARN_ON(1); | |
219 | break; | |
220 | } | |
221 | } | |
222 | } | |
223 | ||
078e1e60 JB |
224 | conf.changed = changed; |
225 | ||
9d139c81 JB |
226 | return local->ops->config_interface(local_to_hw(local), |
227 | &sdata->vif, &conf); | |
b2c258fb | 228 | } |
f0706e82 | 229 | |
e8975581 | 230 | int ieee80211_hw_config(struct ieee80211_local *local, u32 changed) |
b2c258fb | 231 | { |
b2c258fb JB |
232 | struct ieee80211_channel *chan; |
233 | int ret = 0; | |
e8975581 | 234 | int power; |
094d05dc | 235 | enum nl80211_channel_type channel_type; |
f0706e82 | 236 | |
cb121bad JB |
237 | might_sleep(); |
238 | ||
72bdcf34 | 239 | if (local->sw_scanning) { |
b2c258fb | 240 | chan = local->scan_channel; |
094d05dc | 241 | channel_type = NL80211_CHAN_NO_HT; |
72bdcf34 | 242 | } else { |
b2c258fb | 243 | chan = local->oper_channel; |
094d05dc | 244 | channel_type = local->oper_channel_type; |
72bdcf34 | 245 | } |
f0706e82 | 246 | |
72bdcf34 | 247 | if (chan != local->hw.conf.channel || |
4797938c | 248 | channel_type != local->hw.conf.channel_type) { |
e8975581 | 249 | local->hw.conf.channel = chan; |
4797938c | 250 | local->hw.conf.channel_type = channel_type; |
e8975581 JB |
251 | changed |= IEEE80211_CONF_CHANGE_CHANNEL; |
252 | } | |
8318d78a | 253 | |
a8302de9 | 254 | if (local->sw_scanning) |
e8975581 | 255 | power = chan->max_power; |
8318d78a | 256 | else |
a8302de9 VT |
257 | power = local->power_constr_level ? |
258 | (chan->max_power - local->power_constr_level) : | |
259 | chan->max_power; | |
260 | ||
47afbaf5 | 261 | if (local->user_power_level >= 0) |
a8302de9 VT |
262 | power = min(power, local->user_power_level); |
263 | ||
e8975581 JB |
264 | if (local->hw.conf.power_level != power) { |
265 | changed |= IEEE80211_CONF_CHANGE_POWER; | |
266 | local->hw.conf.power_level = power; | |
267 | } | |
b2c258fb | 268 | |
e8975581 JB |
269 | if (changed && local->open_count) { |
270 | ret = local->ops->config(local_to_hw(local), changed); | |
d73782fd | 271 | /* |
447107fb | 272 | * Goal: |
d73782fd JB |
273 | * HW reconfiguration should never fail, the driver has told |
274 | * us what it can support so it should live up to that promise. | |
447107fb RC |
275 | * |
276 | * Current status: | |
277 | * rfkill is not integrated with mac80211 and a | |
278 | * configuration command can thus fail if hardware rfkill | |
279 | * is enabled | |
280 | * | |
281 | * FIXME: integrate rfkill with mac80211 and then add this | |
282 | * WARN_ON() back | |
283 | * | |
d73782fd | 284 | */ |
447107fb | 285 | /* WARN_ON(ret); */ |
d73782fd | 286 | } |
f0706e82 | 287 | |
b2c258fb JB |
288 | return ret; |
289 | } | |
f0706e82 | 290 | |
471b3efd JB |
291 | void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, |
292 | u32 changed) | |
d9430a32 | 293 | { |
471b3efd JB |
294 | struct ieee80211_local *local = sdata->local; |
295 | ||
7a725f73 JB |
296 | if (WARN_ON(sdata->vif.type == NL80211_IFTYPE_AP_VLAN)) |
297 | return; | |
298 | ||
471b3efd JB |
299 | if (!changed) |
300 | return; | |
301 | ||
302 | if (local->ops->bss_info_changed) | |
303 | local->ops->bss_info_changed(local_to_hw(local), | |
304 | &sdata->vif, | |
bda3933a | 305 | &sdata->vif.bss_conf, |
471b3efd | 306 | changed); |
d9430a32 DD |
307 | } |
308 | ||
f698d856 | 309 | u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata) |
d9430a32 | 310 | { |
bda3933a JB |
311 | sdata->vif.bss_conf.use_cts_prot = false; |
312 | sdata->vif.bss_conf.use_short_preamble = false; | |
313 | sdata->vif.bss_conf.use_short_slot = false; | |
7a5158ef JB |
314 | return BSS_CHANGED_ERP_CTS_PROT | |
315 | BSS_CHANGED_ERP_PREAMBLE | | |
316 | BSS_CHANGED_ERP_SLOT; | |
d9430a32 DD |
317 | } |
318 | ||
f0706e82 | 319 | void ieee80211_tx_status_irqsafe(struct ieee80211_hw *hw, |
e039fa4a | 320 | struct sk_buff *skb) |
f0706e82 JB |
321 | { |
322 | struct ieee80211_local *local = hw_to_local(hw); | |
e039fa4a | 323 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
f0706e82 JB |
324 | int tmp; |
325 | ||
326 | skb->dev = local->mdev; | |
f0706e82 | 327 | skb->pkt_type = IEEE80211_TX_STATUS_MSG; |
e039fa4a | 328 | skb_queue_tail(info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS ? |
f0706e82 JB |
329 | &local->skb_queue : &local->skb_queue_unreliable, skb); |
330 | tmp = skb_queue_len(&local->skb_queue) + | |
331 | skb_queue_len(&local->skb_queue_unreliable); | |
332 | while (tmp > IEEE80211_IRQSAFE_QUEUE_LIMIT && | |
333 | (skb = skb_dequeue(&local->skb_queue_unreliable))) { | |
f0706e82 JB |
334 | dev_kfree_skb_irq(skb); |
335 | tmp--; | |
336 | I802_DEBUG_INC(local->tx_status_drop); | |
337 | } | |
338 | tasklet_schedule(&local->tasklet); | |
339 | } | |
340 | EXPORT_SYMBOL(ieee80211_tx_status_irqsafe); | |
341 | ||
342 | static void ieee80211_tasklet_handler(unsigned long data) | |
343 | { | |
344 | struct ieee80211_local *local = (struct ieee80211_local *) data; | |
345 | struct sk_buff *skb; | |
346 | struct ieee80211_rx_status rx_status; | |
eadc8d9e | 347 | struct ieee80211_ra_tid *ra_tid; |
f0706e82 JB |
348 | |
349 | while ((skb = skb_dequeue(&local->skb_queue)) || | |
350 | (skb = skb_dequeue(&local->skb_queue_unreliable))) { | |
351 | switch (skb->pkt_type) { | |
352 | case IEEE80211_RX_MSG: | |
353 | /* status is in skb->cb */ | |
354 | memcpy(&rx_status, skb->cb, sizeof(rx_status)); | |
51fb61e7 | 355 | /* Clear skb->pkt_type in order to not confuse kernel |
f0706e82 JB |
356 | * netstack. */ |
357 | skb->pkt_type = 0; | |
358 | __ieee80211_rx(local_to_hw(local), skb, &rx_status); | |
359 | break; | |
360 | case IEEE80211_TX_STATUS_MSG: | |
f0706e82 | 361 | skb->pkt_type = 0; |
e039fa4a | 362 | ieee80211_tx_status(local_to_hw(local), skb); |
f0706e82 | 363 | break; |
eadc8d9e RR |
364 | case IEEE80211_DELBA_MSG: |
365 | ra_tid = (struct ieee80211_ra_tid *) &skb->cb; | |
366 | ieee80211_stop_tx_ba_cb(local_to_hw(local), | |
367 | ra_tid->ra, ra_tid->tid); | |
368 | dev_kfree_skb(skb); | |
369 | break; | |
370 | case IEEE80211_ADDBA_MSG: | |
371 | ra_tid = (struct ieee80211_ra_tid *) &skb->cb; | |
372 | ieee80211_start_tx_ba_cb(local_to_hw(local), | |
373 | ra_tid->ra, ra_tid->tid); | |
374 | dev_kfree_skb(skb); | |
375 | break ; | |
f4ea83dd | 376 | default: |
5e3f3089 LF |
377 | WARN(1, "mac80211: Packet is of unknown type %d\n", |
378 | skb->pkt_type); | |
f0706e82 JB |
379 | dev_kfree_skb(skb); |
380 | break; | |
381 | } | |
382 | } | |
383 | } | |
384 | ||
f0706e82 JB |
385 | /* Remove added headers (e.g., QoS control), encryption header/MIC, etc. to |
386 | * make a prepared TX frame (one that has been given to hw) to look like brand | |
387 | * new IEEE 802.11 frame that is ready to go through TX processing again. | |
d0f09804 | 388 | */ |
f0706e82 JB |
389 | static void ieee80211_remove_tx_extra(struct ieee80211_local *local, |
390 | struct ieee80211_key *key, | |
e039fa4a | 391 | struct sk_buff *skb) |
f0706e82 | 392 | { |
62bf1d76 HH |
393 | unsigned int hdrlen, iv_len, mic_len; |
394 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; | |
f0706e82 | 395 | |
62bf1d76 | 396 | hdrlen = ieee80211_hdrlen(hdr->frame_control); |
f0706e82 JB |
397 | |
398 | if (!key) | |
399 | goto no_key; | |
400 | ||
8f20fc24 | 401 | switch (key->conf.alg) { |
f0706e82 JB |
402 | case ALG_WEP: |
403 | iv_len = WEP_IV_LEN; | |
404 | mic_len = WEP_ICV_LEN; | |
405 | break; | |
406 | case ALG_TKIP: | |
407 | iv_len = TKIP_IV_LEN; | |
408 | mic_len = TKIP_ICV_LEN; | |
409 | break; | |
410 | case ALG_CCMP: | |
411 | iv_len = CCMP_HDR_LEN; | |
412 | mic_len = CCMP_MIC_LEN; | |
413 | break; | |
414 | default: | |
415 | goto no_key; | |
416 | } | |
417 | ||
62bf1d76 | 418 | if (skb->len >= hdrlen + mic_len && |
11a843b7 | 419 | !(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)) |
f0706e82 | 420 | skb_trim(skb, skb->len - mic_len); |
62bf1d76 | 421 | if (skb->len >= hdrlen + iv_len) { |
f0706e82 | 422 | memmove(skb->data + iv_len, skb->data, hdrlen); |
62bf1d76 | 423 | hdr = (struct ieee80211_hdr *)skb_pull(skb, iv_len); |
f0706e82 JB |
424 | } |
425 | ||
426 | no_key: | |
62bf1d76 HH |
427 | if (ieee80211_is_data_qos(hdr->frame_control)) { |
428 | hdr->frame_control &= ~cpu_to_le16(IEEE80211_STYPE_QOS_DATA); | |
429 | memmove(skb->data + IEEE80211_QOS_CTL_LEN, skb->data, | |
430 | hdrlen - IEEE80211_QOS_CTL_LEN); | |
431 | skb_pull(skb, IEEE80211_QOS_CTL_LEN); | |
f0706e82 JB |
432 | } |
433 | } | |
434 | ||
d46e144b JB |
435 | static void ieee80211_handle_filtered_frame(struct ieee80211_local *local, |
436 | struct sta_info *sta, | |
e039fa4a | 437 | struct sk_buff *skb) |
d46e144b JB |
438 | { |
439 | sta->tx_filtered_count++; | |
440 | ||
441 | /* | |
442 | * Clear the TX filter mask for this STA when sending the next | |
443 | * packet. If the STA went to power save mode, this will happen | |
f6d97104 | 444 | * when it wakes up for the next time. |
d46e144b | 445 | */ |
07346f81 | 446 | set_sta_flags(sta, WLAN_STA_CLEAR_PS_FILT); |
d46e144b JB |
447 | |
448 | /* | |
449 | * This code races in the following way: | |
450 | * | |
451 | * (1) STA sends frame indicating it will go to sleep and does so | |
452 | * (2) hardware/firmware adds STA to filter list, passes frame up | |
453 | * (3) hardware/firmware processes TX fifo and suppresses a frame | |
454 | * (4) we get TX status before having processed the frame and | |
455 | * knowing that the STA has gone to sleep. | |
456 | * | |
457 | * This is actually quite unlikely even when both those events are | |
458 | * processed from interrupts coming in quickly after one another or | |
459 | * even at the same time because we queue both TX status events and | |
460 | * RX frames to be processed by a tasklet and process them in the | |
461 | * same order that they were received or TX status last. Hence, there | |
462 | * is no race as long as the frame RX is processed before the next TX | |
463 | * status, which drivers can ensure, see below. | |
464 | * | |
465 | * Note that this can only happen if the hardware or firmware can | |
466 | * actually add STAs to the filter list, if this is done by the | |
467 | * driver in response to set_tim() (which will only reduce the race | |
468 | * this whole filtering tries to solve, not completely solve it) | |
469 | * this situation cannot happen. | |
470 | * | |
471 | * To completely solve this race drivers need to make sure that they | |
472 | * (a) don't mix the irq-safe/not irq-safe TX status/RX processing | |
473 | * functions and | |
474 | * (b) always process RX events before TX status events if ordering | |
475 | * can be unknown, for example with different interrupt status | |
476 | * bits. | |
477 | */ | |
07346f81 | 478 | if (test_sta_flags(sta, WLAN_STA_PS) && |
d46e144b | 479 | skb_queue_len(&sta->tx_filtered) < STA_MAX_TX_BUFFER) { |
e039fa4a | 480 | ieee80211_remove_tx_extra(local, sta->key, skb); |
d46e144b JB |
481 | skb_queue_tail(&sta->tx_filtered, skb); |
482 | return; | |
483 | } | |
484 | ||
8b30b1fe | 485 | if (!test_sta_flags(sta, WLAN_STA_PS) && !skb->requeue) { |
d46e144b | 486 | /* Software retry the packet once */ |
8b30b1fe | 487 | skb->requeue = 1; |
e039fa4a | 488 | ieee80211_remove_tx_extra(local, sta->key, skb); |
d46e144b JB |
489 | dev_queue_xmit(skb); |
490 | return; | |
491 | } | |
492 | ||
f4ea83dd | 493 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
d46e144b JB |
494 | if (net_ratelimit()) |
495 | printk(KERN_DEBUG "%s: dropped TX filtered frame, " | |
496 | "queue_len=%d PS=%d @%lu\n", | |
497 | wiphy_name(local->hw.wiphy), | |
498 | skb_queue_len(&sta->tx_filtered), | |
07346f81 | 499 | !!test_sta_flags(sta, WLAN_STA_PS), jiffies); |
f4ea83dd | 500 | #endif |
d46e144b JB |
501 | dev_kfree_skb(skb); |
502 | } | |
503 | ||
e039fa4a | 504 | void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb) |
f0706e82 JB |
505 | { |
506 | struct sk_buff *skb2; | |
507 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; | |
508 | struct ieee80211_local *local = hw_to_local(hw); | |
e039fa4a | 509 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
f0706e82 | 510 | u16 frag, type; |
429a3805 | 511 | __le16 fc; |
4b7679a5 | 512 | struct ieee80211_supported_band *sband; |
b306f453 JB |
513 | struct ieee80211_tx_status_rtap_hdr *rthdr; |
514 | struct ieee80211_sub_if_data *sdata; | |
3d30d949 | 515 | struct net_device *prev_dev = NULL; |
429a3805 | 516 | struct sta_info *sta; |
e6a9854b JB |
517 | int retry_count = -1, i; |
518 | ||
519 | for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) { | |
520 | /* the HW cannot have attempted that rate */ | |
521 | if (i >= hw->max_rates) { | |
522 | info->status.rates[i].idx = -1; | |
523 | info->status.rates[i].count = 0; | |
524 | } | |
525 | ||
526 | retry_count += info->status.rates[i].count; | |
527 | } | |
528 | if (retry_count < 0) | |
529 | retry_count = 0; | |
f0706e82 | 530 | |
d0709a65 JB |
531 | rcu_read_lock(); |
532 | ||
e6a9854b JB |
533 | sband = local->hw.wiphy->bands[info->band]; |
534 | ||
95dac040 JB |
535 | sta = sta_info_get(local, hdr->addr1); |
536 | ||
537 | if (sta) { | |
e6a9854b | 538 | if (!(info->flags & IEEE80211_TX_STAT_ACK) && |
95dac040 JB |
539 | test_sta_flags(sta, WLAN_STA_PS)) { |
540 | /* | |
541 | * The STA is in power save mode, so assume | |
542 | * that this TX packet failed because of that. | |
543 | */ | |
544 | ieee80211_handle_filtered_frame(local, sta, skb); | |
545 | rcu_read_unlock(); | |
546 | return; | |
f0706e82 | 547 | } |
f0706e82 | 548 | |
95dac040 JB |
549 | fc = hdr->frame_control; |
550 | ||
551 | if ((info->flags & IEEE80211_TX_STAT_AMPDU_NO_BACK) && | |
552 | (ieee80211_is_data_qos(fc))) { | |
553 | u16 tid, ssn; | |
554 | u8 *qc; | |
429a3805 | 555 | |
429a3805 RR |
556 | qc = ieee80211_get_qos_ctl(hdr); |
557 | tid = qc[0] & 0xf; | |
558 | ssn = ((le16_to_cpu(hdr->seq_ctrl) + 0x10) | |
559 | & IEEE80211_SCTL_SEQ); | |
f698d856 | 560 | ieee80211_send_bar(sta->sdata, hdr->addr1, |
429a3805 RR |
561 | tid, ssn); |
562 | } | |
429a3805 | 563 | |
95dac040 | 564 | if (info->flags & IEEE80211_TX_STAT_TX_FILTERED) { |
e039fa4a | 565 | ieee80211_handle_filtered_frame(local, sta, skb); |
d0709a65 | 566 | rcu_read_unlock(); |
f0706e82 | 567 | return; |
95dac040 | 568 | } else { |
e6a9854b | 569 | if (!(info->flags & IEEE80211_TX_STAT_ACK)) |
95dac040 | 570 | sta->tx_retry_failed++; |
e6a9854b | 571 | sta->tx_retry_count += retry_count; |
f0706e82 | 572 | } |
95dac040 | 573 | |
4b7679a5 | 574 | rate_control_tx_status(local, sband, sta, skb); |
95dac040 | 575 | } |
f0706e82 | 576 | |
d0709a65 JB |
577 | rcu_read_unlock(); |
578 | ||
f0706e82 JB |
579 | ieee80211_led_tx(local, 0); |
580 | ||
581 | /* SNMP counters | |
582 | * Fragments are passed to low-level drivers as separate skbs, so these | |
583 | * are actually fragments, not frames. Update frame counters only for | |
584 | * the first fragment of the frame. */ | |
585 | ||
586 | frag = le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_FRAG; | |
587 | type = le16_to_cpu(hdr->frame_control) & IEEE80211_FCTL_FTYPE; | |
588 | ||
e039fa4a | 589 | if (info->flags & IEEE80211_TX_STAT_ACK) { |
f0706e82 JB |
590 | if (frag == 0) { |
591 | local->dot11TransmittedFrameCount++; | |
592 | if (is_multicast_ether_addr(hdr->addr1)) | |
593 | local->dot11MulticastTransmittedFrameCount++; | |
e6a9854b | 594 | if (retry_count > 0) |
f0706e82 | 595 | local->dot11RetryCount++; |
e6a9854b | 596 | if (retry_count > 1) |
f0706e82 JB |
597 | local->dot11MultipleRetryCount++; |
598 | } | |
599 | ||
600 | /* This counter shall be incremented for an acknowledged MPDU | |
601 | * with an individual address in the address 1 field or an MPDU | |
602 | * with a multicast address in the address 1 field of type Data | |
603 | * or Management. */ | |
604 | if (!is_multicast_ether_addr(hdr->addr1) || | |
605 | type == IEEE80211_FTYPE_DATA || | |
606 | type == IEEE80211_FTYPE_MGMT) | |
607 | local->dot11TransmittedFragmentCount++; | |
608 | } else { | |
609 | if (frag == 0) | |
610 | local->dot11FailedCount++; | |
611 | } | |
612 | ||
b306f453 JB |
613 | /* this was a transmitted frame, but now we want to reuse it */ |
614 | skb_orphan(skb); | |
615 | ||
3d30d949 MW |
616 | /* |
617 | * This is a bit racy but we can avoid a lot of work | |
618 | * with this test... | |
619 | */ | |
620 | if (!local->monitors && !local->cooked_mntrs) { | |
f0706e82 JB |
621 | dev_kfree_skb(skb); |
622 | return; | |
623 | } | |
624 | ||
b306f453 | 625 | /* send frame to monitor interfaces now */ |
f0706e82 | 626 | |
b306f453 JB |
627 | if (skb_headroom(skb) < sizeof(*rthdr)) { |
628 | printk(KERN_ERR "ieee80211_tx_status: headroom too small\n"); | |
f0706e82 JB |
629 | dev_kfree_skb(skb); |
630 | return; | |
631 | } | |
f0706e82 | 632 | |
988c0f72 | 633 | rthdr = (struct ieee80211_tx_status_rtap_hdr *) |
b306f453 JB |
634 | skb_push(skb, sizeof(*rthdr)); |
635 | ||
636 | memset(rthdr, 0, sizeof(*rthdr)); | |
637 | rthdr->hdr.it_len = cpu_to_le16(sizeof(*rthdr)); | |
638 | rthdr->hdr.it_present = | |
639 | cpu_to_le32((1 << IEEE80211_RADIOTAP_TX_FLAGS) | | |
e6a9854b JB |
640 | (1 << IEEE80211_RADIOTAP_DATA_RETRIES) | |
641 | (1 << IEEE80211_RADIOTAP_RATE)); | |
b306f453 | 642 | |
e039fa4a | 643 | if (!(info->flags & IEEE80211_TX_STAT_ACK) && |
b306f453 JB |
644 | !is_multicast_ether_addr(hdr->addr1)) |
645 | rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_FAIL); | |
646 | ||
e6a9854b JB |
647 | /* |
648 | * XXX: Once radiotap gets the bitmap reset thing the vendor | |
649 | * extensions proposal contains, we can actually report | |
650 | * the whole set of tries we did. | |
651 | */ | |
652 | if ((info->status.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) || | |
653 | (info->status.rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT)) | |
b306f453 | 654 | rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_CTS); |
e6a9854b | 655 | else if (info->status.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) |
b306f453 | 656 | rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_RTS); |
e6a9854b JB |
657 | if (info->status.rates[0].idx >= 0 && |
658 | !(info->status.rates[0].flags & IEEE80211_TX_RC_MCS)) | |
659 | rthdr->rate = sband->bitrates[ | |
660 | info->status.rates[0].idx].bitrate / 5; | |
b306f453 | 661 | |
e6a9854b JB |
662 | /* for now report the total retry_count */ |
663 | rthdr->data_retries = retry_count; | |
b306f453 | 664 | |
3d30d949 MW |
665 | /* XXX: is this sufficient for BPF? */ |
666 | skb_set_mac_header(skb, 0); | |
667 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
668 | skb->pkt_type = PACKET_OTHERHOST; | |
669 | skb->protocol = htons(ETH_P_802_2); | |
670 | memset(skb->cb, 0, sizeof(skb->cb)); | |
671 | ||
79010420 | 672 | rcu_read_lock(); |
79010420 | 673 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
05c914fe | 674 | if (sdata->vif.type == NL80211_IFTYPE_MONITOR) { |
b306f453 JB |
675 | if (!netif_running(sdata->dev)) |
676 | continue; | |
3d30d949 MW |
677 | |
678 | if (prev_dev) { | |
79010420 | 679 | skb2 = skb_clone(skb, GFP_ATOMIC); |
3d30d949 MW |
680 | if (skb2) { |
681 | skb2->dev = prev_dev; | |
682 | netif_rx(skb2); | |
683 | } | |
684 | } | |
685 | ||
686 | prev_dev = sdata->dev; | |
b306f453 JB |
687 | } |
688 | } | |
3d30d949 MW |
689 | if (prev_dev) { |
690 | skb->dev = prev_dev; | |
691 | netif_rx(skb); | |
692 | skb = NULL; | |
693 | } | |
79010420 | 694 | rcu_read_unlock(); |
3d30d949 | 695 | dev_kfree_skb(skb); |
f0706e82 JB |
696 | } |
697 | EXPORT_SYMBOL(ieee80211_tx_status); | |
698 | ||
f0706e82 JB |
699 | struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len, |
700 | const struct ieee80211_ops *ops) | |
701 | { | |
f0706e82 | 702 | struct ieee80211_local *local; |
96f5e66e | 703 | int priv_size, i; |
f0706e82 JB |
704 | struct wiphy *wiphy; |
705 | ||
706 | /* Ensure 32-byte alignment of our private data and hw private data. | |
707 | * We use the wiphy priv data for both our ieee80211_local and for | |
708 | * the driver's private data | |
709 | * | |
710 | * In memory it'll be like this: | |
711 | * | |
712 | * +-------------------------+ | |
713 | * | struct wiphy | | |
714 | * +-------------------------+ | |
715 | * | struct ieee80211_local | | |
716 | * +-------------------------+ | |
717 | * | driver's private data | | |
718 | * +-------------------------+ | |
719 | * | |
720 | */ | |
721 | priv_size = ((sizeof(struct ieee80211_local) + | |
722 | NETDEV_ALIGN_CONST) & ~NETDEV_ALIGN_CONST) + | |
723 | priv_data_len; | |
724 | ||
725 | wiphy = wiphy_new(&mac80211_config_ops, priv_size); | |
726 | ||
727 | if (!wiphy) | |
728 | return NULL; | |
729 | ||
730 | wiphy->privid = mac80211_wiphy_privid; | |
18a83659 | 731 | |
00d3f14c JB |
732 | /* Yes, putting cfg80211_bss into ieee80211_bss is a hack */ |
733 | wiphy->bss_priv_size = sizeof(struct ieee80211_bss) - | |
734 | sizeof(struct cfg80211_bss); | |
f0706e82 JB |
735 | |
736 | local = wiphy_priv(wiphy); | |
de95a54b | 737 | |
f0706e82 JB |
738 | local->hw.wiphy = wiphy; |
739 | ||
740 | local->hw.priv = (char *)local + | |
741 | ((sizeof(struct ieee80211_local) + | |
742 | NETDEV_ALIGN_CONST) & ~NETDEV_ALIGN_CONST); | |
743 | ||
4480f15c | 744 | BUG_ON(!ops->tx); |
4150c572 JB |
745 | BUG_ON(!ops->start); |
746 | BUG_ON(!ops->stop); | |
4480f15c JB |
747 | BUG_ON(!ops->config); |
748 | BUG_ON(!ops->add_interface); | |
4150c572 JB |
749 | BUG_ON(!ops->remove_interface); |
750 | BUG_ON(!ops->configure_filter); | |
f0706e82 JB |
751 | local->ops = ops; |
752 | ||
e6a9854b JB |
753 | /* set up some defaults */ |
754 | local->hw.queues = 1; | |
755 | local->hw.max_rates = 1; | |
f0706e82 JB |
756 | local->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD; |
757 | local->fragmentation_threshold = IEEE80211_MAX_FRAG_THRESHOLD; | |
9124b077 JB |
758 | local->hw.conf.long_frame_max_tx_count = 4; |
759 | local->hw.conf.short_frame_max_tx_count = 7; | |
e8975581 | 760 | local->hw.conf.radio_enabled = true; |
f0706e82 | 761 | |
79010420 | 762 | INIT_LIST_HEAD(&local->interfaces); |
c771c9d8 | 763 | mutex_init(&local->iflist_mtx); |
f0706e82 | 764 | |
b16bd15c JB |
765 | spin_lock_init(&local->key_lock); |
766 | ||
ce7c9111 KV |
767 | spin_lock_init(&local->queue_stop_reason_lock); |
768 | ||
c2b13452 | 769 | INIT_DELAYED_WORK(&local->scan_work, ieee80211_scan_work); |
f0706e82 | 770 | |
520eb820 KV |
771 | INIT_WORK(&local->dynamic_ps_enable_work, |
772 | ieee80211_dynamic_ps_enable_work); | |
773 | INIT_WORK(&local->dynamic_ps_disable_work, | |
774 | ieee80211_dynamic_ps_disable_work); | |
775 | setup_timer(&local->dynamic_ps_timer, | |
776 | ieee80211_dynamic_ps_timer, (unsigned long) local); | |
777 | ||
f0706e82 JB |
778 | sta_info_init(local); |
779 | ||
2a577d98 JB |
780 | for (i = 0; i < IEEE80211_MAX_QUEUES; i++) |
781 | skb_queue_head_init(&local->pending[i]); | |
f0706e82 JB |
782 | tasklet_init(&local->tx_pending_tasklet, ieee80211_tx_pending, |
783 | (unsigned long)local); | |
784 | tasklet_disable(&local->tx_pending_tasklet); | |
785 | ||
786 | tasklet_init(&local->tasklet, | |
787 | ieee80211_tasklet_handler, | |
788 | (unsigned long) local); | |
789 | tasklet_disable(&local->tasklet); | |
790 | ||
791 | skb_queue_head_init(&local->skb_queue); | |
792 | skb_queue_head_init(&local->skb_queue_unreliable); | |
793 | ||
cd8ffc80 JB |
794 | spin_lock_init(&local->ampdu_lock); |
795 | ||
f0706e82 JB |
796 | return local_to_hw(local); |
797 | } | |
798 | EXPORT_SYMBOL(ieee80211_alloc_hw); | |
799 | ||
7230645e JB |
800 | static const struct net_device_ops ieee80211_master_ops = { |
801 | .ndo_start_xmit = ieee80211_master_start_xmit, | |
802 | .ndo_open = ieee80211_master_open, | |
803 | .ndo_stop = ieee80211_master_stop, | |
804 | .ndo_set_multicast_list = ieee80211_master_set_multicast_list, | |
805 | .ndo_select_queue = ieee80211_select_queue, | |
806 | }; | |
807 | ||
808 | static void ieee80211_master_setup(struct net_device *mdev) | |
809 | { | |
810 | mdev->type = ARPHRD_IEEE80211; | |
811 | mdev->netdev_ops = &ieee80211_master_ops; | |
812 | mdev->header_ops = &ieee80211_header_ops; | |
813 | mdev->tx_queue_len = 1000; | |
814 | mdev->addr_len = ETH_ALEN; | |
815 | } | |
816 | ||
f0706e82 JB |
817 | int ieee80211_register_hw(struct ieee80211_hw *hw) |
818 | { | |
819 | struct ieee80211_local *local = hw_to_local(hw); | |
f0706e82 | 820 | int result; |
8318d78a | 821 | enum ieee80211_band band; |
96d51056 | 822 | struct net_device *mdev; |
133b8226 | 823 | struct ieee80211_master_priv *mpriv; |
de95a54b | 824 | int channels, i, j, max_bitrates; |
8318d78a JB |
825 | |
826 | /* | |
827 | * generic code guarantees at least one band, | |
828 | * set this very early because much code assumes | |
829 | * that hw.conf.channel is assigned | |
830 | */ | |
2a519311 | 831 | channels = 0; |
de95a54b | 832 | max_bitrates = 0; |
8318d78a JB |
833 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { |
834 | struct ieee80211_supported_band *sband; | |
835 | ||
836 | sband = local->hw.wiphy->bands[band]; | |
de95a54b JB |
837 | if (!sband) |
838 | continue; | |
839 | if (!local->oper_channel) { | |
8318d78a JB |
840 | /* init channel we're on */ |
841 | local->hw.conf.channel = | |
842 | local->oper_channel = | |
843 | local->scan_channel = &sband->channels[0]; | |
8318d78a | 844 | } |
de95a54b JB |
845 | channels += sband->n_channels; |
846 | ||
847 | if (max_bitrates < sband->n_bitrates) | |
848 | max_bitrates = sband->n_bitrates; | |
8318d78a | 849 | } |
f0706e82 | 850 | |
2a519311 JB |
851 | local->int_scan_req.n_channels = channels; |
852 | local->int_scan_req.channels = kzalloc(sizeof(void *) * channels, GFP_KERNEL); | |
853 | if (!local->int_scan_req.channels) | |
854 | return -ENOMEM; | |
855 | ||
f59ac048 LR |
856 | /* if low-level driver supports AP, we also support VLAN */ |
857 | if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) | |
858 | local->hw.wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP_VLAN); | |
859 | ||
860 | /* mac80211 always supports monitor */ | |
861 | local->hw.wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR); | |
862 | ||
77965c97 JB |
863 | if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM) |
864 | local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM; | |
865 | else if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC) | |
866 | local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC; | |
867 | ||
de95a54b JB |
868 | /* |
869 | * Calculate scan IE length -- we need this to alloc | |
870 | * memory and to subtract from the driver limit. It | |
871 | * includes the (extended) supported rates and HT | |
872 | * information -- SSID is the driver's responsibility. | |
873 | */ | |
874 | local->scan_ies_len = 4 + max_bitrates; /* (ext) supp rates */ | |
875 | ||
876 | if (!local->ops->hw_scan) { | |
877 | /* For hw_scan, driver needs to set these up. */ | |
878 | local->hw.wiphy->max_scan_ssids = 4; | |
879 | local->hw.wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN; | |
880 | } | |
881 | ||
882 | /* | |
883 | * If the driver supports any scan IEs, then assume the | |
884 | * limit includes the IEs mac80211 will add, otherwise | |
885 | * leave it at zero and let the driver sort it out; we | |
886 | * still pass our IEs to the driver but userspace will | |
887 | * not be allowed to in that case. | |
888 | */ | |
889 | if (local->hw.wiphy->max_scan_ie_len) | |
890 | local->hw.wiphy->max_scan_ie_len -= local->scan_ies_len; | |
891 | ||
f0706e82 JB |
892 | result = wiphy_register(local->hw.wiphy); |
893 | if (result < 0) | |
2a519311 | 894 | goto fail_wiphy_register; |
f0706e82 | 895 | |
e2530083 JB |
896 | /* |
897 | * We use the number of queues for feature tests (QoS, HT) internally | |
898 | * so restrict them appropriately. | |
899 | */ | |
e2530083 JB |
900 | if (hw->queues > IEEE80211_MAX_QUEUES) |
901 | hw->queues = IEEE80211_MAX_QUEUES; | |
e2530083 | 902 | |
133b8226 | 903 | mdev = alloc_netdev_mq(sizeof(struct ieee80211_master_priv), |
7230645e | 904 | "wmaster%d", ieee80211_master_setup, |
96f5e66e | 905 | hw->queues); |
96d51056 JB |
906 | if (!mdev) |
907 | goto fail_mdev_alloc; | |
908 | ||
133b8226 JB |
909 | mpriv = netdev_priv(mdev); |
910 | mpriv->local = local; | |
96d51056 JB |
911 | local->mdev = mdev; |
912 | ||
4ada424d | 913 | local->hw.workqueue = |
30d3ef41 | 914 | create_singlethread_workqueue(wiphy_name(local->hw.wiphy)); |
f0706e82 JB |
915 | if (!local->hw.workqueue) { |
916 | result = -ENOMEM; | |
917 | goto fail_workqueue; | |
918 | } | |
919 | ||
b306f453 JB |
920 | /* |
921 | * The hardware needs headroom for sending the frame, | |
922 | * and we need some headroom for passing the frame to monitor | |
923 | * interfaces, but never both at the same time. | |
924 | */ | |
33ccad35 JB |
925 | local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom, |
926 | sizeof(struct ieee80211_tx_status_rtap_hdr)); | |
b306f453 | 927 | |
e9f207f0 JB |
928 | debugfs_hw_add(local); |
929 | ||
dc0ae30c TW |
930 | if (local->hw.conf.beacon_int < 10) |
931 | local->hw.conf.beacon_int = 100; | |
f0706e82 | 932 | |
ea95bba4 TW |
933 | if (local->hw.max_listen_interval == 0) |
934 | local->hw.max_listen_interval = 1; | |
935 | ||
936 | local->hw.conf.listen_interval = local->hw.max_listen_interval; | |
937 | ||
f0706e82 JB |
938 | result = sta_info_start(local); |
939 | if (result < 0) | |
940 | goto fail_sta_info; | |
941 | ||
942 | rtnl_lock(); | |
943 | result = dev_alloc_name(local->mdev, local->mdev->name); | |
944 | if (result < 0) | |
945 | goto fail_dev; | |
946 | ||
947 | memcpy(local->mdev->dev_addr, local->hw.wiphy->perm_addr, ETH_ALEN); | |
948 | SET_NETDEV_DEV(local->mdev, wiphy_dev(local->hw.wiphy)); | |
076ae609 | 949 | local->mdev->features |= NETIF_F_NETNS_LOCAL; |
f0706e82 JB |
950 | |
951 | result = register_netdevice(local->mdev); | |
952 | if (result < 0) | |
953 | goto fail_dev; | |
954 | ||
830f9038 JB |
955 | result = ieee80211_init_rate_ctrl_alg(local, |
956 | hw->rate_control_algorithm); | |
f0706e82 JB |
957 | if (result < 0) { |
958 | printk(KERN_DEBUG "%s: Failed to initialize rate control " | |
dd1cd4c6 | 959 | "algorithm\n", wiphy_name(local->hw.wiphy)); |
f0706e82 JB |
960 | goto fail_rate; |
961 | } | |
962 | ||
963 | result = ieee80211_wep_init(local); | |
964 | ||
965 | if (result < 0) { | |
023a04be JF |
966 | printk(KERN_DEBUG "%s: Failed to initialize wep: %d\n", |
967 | wiphy_name(local->hw.wiphy), result); | |
f0706e82 JB |
968 | goto fail_wep; |
969 | } | |
970 | ||
8dffff21 JB |
971 | /* add one default STA interface if supported */ |
972 | if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_STATION)) { | |
973 | result = ieee80211_if_add(local, "wlan%d", NULL, | |
974 | NL80211_IFTYPE_STATION, NULL); | |
975 | if (result) | |
976 | printk(KERN_WARNING "%s: Failed to add default virtual iface\n", | |
977 | wiphy_name(local->hw.wiphy)); | |
978 | } | |
f0706e82 | 979 | |
f0706e82 JB |
980 | rtnl_unlock(); |
981 | ||
982 | ieee80211_led_init(local); | |
983 | ||
2a519311 JB |
984 | /* alloc internal scan request */ |
985 | i = 0; | |
986 | local->int_scan_req.ssids = &local->scan_ssid; | |
987 | local->int_scan_req.n_ssids = 1; | |
988 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { | |
989 | if (!hw->wiphy->bands[band]) | |
990 | continue; | |
991 | for (j = 0; j < hw->wiphy->bands[band]->n_channels; j++) { | |
992 | local->int_scan_req.channels[i] = | |
993 | &hw->wiphy->bands[band]->channels[j]; | |
994 | i++; | |
995 | } | |
996 | } | |
997 | ||
f0706e82 JB |
998 | return 0; |
999 | ||
1000 | fail_wep: | |
1001 | rate_control_deinitialize(local); | |
1002 | fail_rate: | |
1003 | unregister_netdevice(local->mdev); | |
339a7c41 | 1004 | local->mdev = NULL; |
f0706e82 JB |
1005 | fail_dev: |
1006 | rtnl_unlock(); | |
1007 | sta_info_stop(local); | |
1008 | fail_sta_info: | |
e9f207f0 | 1009 | debugfs_hw_del(local); |
f0706e82 JB |
1010 | destroy_workqueue(local->hw.workqueue); |
1011 | fail_workqueue: | |
3e122be0 JB |
1012 | if (local->mdev) |
1013 | free_netdev(local->mdev); | |
96d51056 | 1014 | fail_mdev_alloc: |
f0706e82 | 1015 | wiphy_unregister(local->hw.wiphy); |
2a519311 JB |
1016 | fail_wiphy_register: |
1017 | kfree(local->int_scan_req.channels); | |
f0706e82 JB |
1018 | return result; |
1019 | } | |
1020 | EXPORT_SYMBOL(ieee80211_register_hw); | |
1021 | ||
f0706e82 JB |
1022 | void ieee80211_unregister_hw(struct ieee80211_hw *hw) |
1023 | { | |
1024 | struct ieee80211_local *local = hw_to_local(hw); | |
f0706e82 JB |
1025 | |
1026 | tasklet_kill(&local->tx_pending_tasklet); | |
1027 | tasklet_kill(&local->tasklet); | |
1028 | ||
1029 | rtnl_lock(); | |
1030 | ||
79010420 JB |
1031 | /* |
1032 | * At this point, interface list manipulations are fine | |
1033 | * because the driver cannot be handing us frames any | |
1034 | * more and the tasklet is killed. | |
1035 | */ | |
5b2812e9 | 1036 | |
75636525 JB |
1037 | /* First, we remove all virtual interfaces. */ |
1038 | ieee80211_remove_interfaces(local); | |
5b2812e9 JB |
1039 | |
1040 | /* then, finally, remove the master interface */ | |
3e122be0 | 1041 | unregister_netdevice(local->mdev); |
f0706e82 JB |
1042 | |
1043 | rtnl_unlock(); | |
1044 | ||
f0706e82 JB |
1045 | ieee80211_clear_tx_pending(local); |
1046 | sta_info_stop(local); | |
1047 | rate_control_deinitialize(local); | |
e9f207f0 | 1048 | debugfs_hw_del(local); |
f0706e82 | 1049 | |
f0706e82 JB |
1050 | if (skb_queue_len(&local->skb_queue) |
1051 | || skb_queue_len(&local->skb_queue_unreliable)) | |
1052 | printk(KERN_WARNING "%s: skb_queue not empty\n", | |
dd1cd4c6 | 1053 | wiphy_name(local->hw.wiphy)); |
f0706e82 JB |
1054 | skb_queue_purge(&local->skb_queue); |
1055 | skb_queue_purge(&local->skb_queue_unreliable); | |
1056 | ||
1057 | destroy_workqueue(local->hw.workqueue); | |
1058 | wiphy_unregister(local->hw.wiphy); | |
1059 | ieee80211_wep_free(local); | |
1060 | ieee80211_led_exit(local); | |
3e122be0 | 1061 | free_netdev(local->mdev); |
2a519311 | 1062 | kfree(local->int_scan_req.channels); |
f0706e82 JB |
1063 | } |
1064 | EXPORT_SYMBOL(ieee80211_unregister_hw); | |
1065 | ||
1066 | void ieee80211_free_hw(struct ieee80211_hw *hw) | |
1067 | { | |
1068 | struct ieee80211_local *local = hw_to_local(hw); | |
1069 | ||
c771c9d8 JB |
1070 | mutex_destroy(&local->iflist_mtx); |
1071 | ||
f0706e82 JB |
1072 | wiphy_free(local->hw.wiphy); |
1073 | } | |
1074 | EXPORT_SYMBOL(ieee80211_free_hw); | |
1075 | ||
f0706e82 JB |
1076 | static int __init ieee80211_init(void) |
1077 | { | |
1078 | struct sk_buff *skb; | |
1079 | int ret; | |
1080 | ||
e039fa4a JB |
1081 | BUILD_BUG_ON(sizeof(struct ieee80211_tx_info) > sizeof(skb->cb)); |
1082 | BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, driver_data) + | |
c6a1fa12 | 1083 | IEEE80211_TX_INFO_DRIVER_DATA_SIZE > sizeof(skb->cb)); |
f0706e82 | 1084 | |
cccf129f FF |
1085 | ret = rc80211_minstrel_init(); |
1086 | if (ret) | |
1087 | return ret; | |
1088 | ||
4b475898 | 1089 | ret = rc80211_pid_init(); |
ad018375 | 1090 | if (ret) |
51cb6db0 | 1091 | return ret; |
f0706e82 | 1092 | |
e9f207f0 JB |
1093 | ieee80211_debugfs_netdev_init(); |
1094 | ||
f0706e82 JB |
1095 | return 0; |
1096 | } | |
1097 | ||
f0706e82 JB |
1098 | static void __exit ieee80211_exit(void) |
1099 | { | |
4b475898 | 1100 | rc80211_pid_exit(); |
cccf129f | 1101 | rc80211_minstrel_exit(); |
ac71c691 | 1102 | |
3b96766f JB |
1103 | /* |
1104 | * For key todo, it'll be empty by now but the work | |
1105 | * might still be scheduled. | |
1106 | */ | |
1107 | flush_scheduled_work(); | |
1108 | ||
f7a92144 LCC |
1109 | if (mesh_allocated) |
1110 | ieee80211s_stop(); | |
902acc78 | 1111 | |
e9f207f0 | 1112 | ieee80211_debugfs_netdev_exit(); |
f0706e82 JB |
1113 | } |
1114 | ||
1115 | ||
ca9938fe | 1116 | subsys_initcall(ieee80211_init); |
f0706e82 JB |
1117 | module_exit(ieee80211_exit); |
1118 | ||
1119 | MODULE_DESCRIPTION("IEEE 802.11 subsystem"); | |
1120 | MODULE_LICENSE("GPL"); |