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mac80211: allow configure_filter callback to sleep
[deliverable/linux.git] / drivers / net / wireless / mac80211_hwsim.c
1 /*
2 * mac80211_hwsim - software simulator of 802.11 radio(s) for mac80211
3 * Copyright (c) 2008, Jouni Malinen <j@w1.fi>
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
8 */
9
10 /*
11 * TODO:
12 * - IBSS mode simulation (Beacon transmission with competition for "air time")
13 * - RX filtering based on filter configuration (data->rx_filter)
14 */
15
16 #include <linux/list.h>
17 #include <linux/spinlock.h>
18 #include <net/dst.h>
19 #include <net/xfrm.h>
20 #include <net/mac80211.h>
21 #include <net/ieee80211_radiotap.h>
22 #include <linux/if_arp.h>
23 #include <linux/rtnetlink.h>
24 #include <linux/etherdevice.h>
25 #include <linux/debugfs.h>
26
27 MODULE_AUTHOR("Jouni Malinen");
28 MODULE_DESCRIPTION("Software simulator of 802.11 radio(s) for mac80211");
29 MODULE_LICENSE("GPL");
30
31 static int radios = 2;
32 module_param(radios, int, 0444);
33 MODULE_PARM_DESC(radios, "Number of simulated radios");
34
35 /**
36 * enum hwsim_regtest - the type of regulatory tests we offer
37 *
38 * These are the different values you can use for the regtest
39 * module parameter. This is useful to help test world roaming
40 * and the driver regulatory_hint() call and combinations of these.
41 * If you want to do specific alpha2 regulatory domain tests simply
42 * use the userspace regulatory request as that will be respected as
43 * well without the need of this module parameter. This is designed
44 * only for testing the driver regulatory request, world roaming
45 * and all possible combinations.
46 *
47 * @HWSIM_REGTEST_DISABLED: No regulatory tests are performed,
48 * this is the default value.
49 * @HWSIM_REGTEST_DRIVER_REG_FOLLOW: Used for testing the driver regulatory
50 * hint, only one driver regulatory hint will be sent as such the
51 * secondary radios are expected to follow.
52 * @HWSIM_REGTEST_DRIVER_REG_ALL: Used for testing the driver regulatory
53 * request with all radios reporting the same regulatory domain.
54 * @HWSIM_REGTEST_DIFF_COUNTRY: Used for testing the drivers calling
55 * different regulatory domains requests. Expected behaviour is for
56 * an intersection to occur but each device will still use their
57 * respective regulatory requested domains. Subsequent radios will
58 * use the resulting intersection.
59 * @HWSIM_REGTEST_WORLD_ROAM: Used for testing the world roaming. We acomplish
60 * this by using a custom beacon-capable regulatory domain for the first
61 * radio. All other device world roam.
62 * @HWSIM_REGTEST_CUSTOM_WORLD: Used for testing the custom world regulatory
63 * domain requests. All radios will adhere to this custom world regulatory
64 * domain.
65 * @HWSIM_REGTEST_CUSTOM_WORLD_2: Used for testing 2 custom world regulatory
66 * domain requests. The first radio will adhere to the first custom world
67 * regulatory domain, the second one to the second custom world regulatory
68 * domain. All other devices will world roam.
69 * @HWSIM_REGTEST_STRICT_FOLLOW_: Used for testing strict regulatory domain
70 * settings, only the first radio will send a regulatory domain request
71 * and use strict settings. The rest of the radios are expected to follow.
72 * @HWSIM_REGTEST_STRICT_ALL: Used for testing strict regulatory domain
73 * settings. All radios will adhere to this.
74 * @HWSIM_REGTEST_STRICT_AND_DRIVER_REG: Used for testing strict regulatory
75 * domain settings, combined with secondary driver regulatory domain
76 * settings. The first radio will get a strict regulatory domain setting
77 * using the first driver regulatory request and the second radio will use
78 * non-strict settings using the second driver regulatory request. All
79 * other devices should follow the intersection created between the
80 * first two.
81 * @HWSIM_REGTEST_ALL: Used for testing every possible mix. You will need
82 * at least 6 radios for a complete test. We will test in this order:
83 * 1 - driver custom world regulatory domain
84 * 2 - second custom world regulatory domain
85 * 3 - first driver regulatory domain request
86 * 4 - second driver regulatory domain request
87 * 5 - strict regulatory domain settings using the third driver regulatory
88 * domain request
89 * 6 and on - should follow the intersection of the 3rd, 4rth and 5th radio
90 * regulatory requests.
91 */
92 enum hwsim_regtest {
93 HWSIM_REGTEST_DISABLED = 0,
94 HWSIM_REGTEST_DRIVER_REG_FOLLOW = 1,
95 HWSIM_REGTEST_DRIVER_REG_ALL = 2,
96 HWSIM_REGTEST_DIFF_COUNTRY = 3,
97 HWSIM_REGTEST_WORLD_ROAM = 4,
98 HWSIM_REGTEST_CUSTOM_WORLD = 5,
99 HWSIM_REGTEST_CUSTOM_WORLD_2 = 6,
100 HWSIM_REGTEST_STRICT_FOLLOW = 7,
101 HWSIM_REGTEST_STRICT_ALL = 8,
102 HWSIM_REGTEST_STRICT_AND_DRIVER_REG = 9,
103 HWSIM_REGTEST_ALL = 10,
104 };
105
106 /* Set to one of the HWSIM_REGTEST_* values above */
107 static int regtest = HWSIM_REGTEST_DISABLED;
108 module_param(regtest, int, 0444);
109 MODULE_PARM_DESC(regtest, "The type of regulatory test we want to run");
110
111 static const char *hwsim_alpha2s[] = {
112 "FI",
113 "AL",
114 "US",
115 "DE",
116 "JP",
117 "AL",
118 };
119
120 static const struct ieee80211_regdomain hwsim_world_regdom_custom_01 = {
121 .n_reg_rules = 4,
122 .alpha2 = "99",
123 .reg_rules = {
124 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
125 REG_RULE(2484-10, 2484+10, 40, 0, 20, 0),
126 REG_RULE(5150-10, 5240+10, 40, 0, 30, 0),
127 REG_RULE(5745-10, 5825+10, 40, 0, 30, 0),
128 }
129 };
130
131 static const struct ieee80211_regdomain hwsim_world_regdom_custom_02 = {
132 .n_reg_rules = 2,
133 .alpha2 = "99",
134 .reg_rules = {
135 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
136 REG_RULE(5725-10, 5850+10, 40, 0, 30,
137 NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS),
138 }
139 };
140
141 struct hwsim_vif_priv {
142 u32 magic;
143 u8 bssid[ETH_ALEN];
144 bool assoc;
145 u16 aid;
146 };
147
148 #define HWSIM_VIF_MAGIC 0x69537748
149
150 static inline void hwsim_check_magic(struct ieee80211_vif *vif)
151 {
152 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
153 WARN_ON(vp->magic != HWSIM_VIF_MAGIC);
154 }
155
156 static inline void hwsim_set_magic(struct ieee80211_vif *vif)
157 {
158 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
159 vp->magic = HWSIM_VIF_MAGIC;
160 }
161
162 static inline void hwsim_clear_magic(struct ieee80211_vif *vif)
163 {
164 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
165 vp->magic = 0;
166 }
167
168 struct hwsim_sta_priv {
169 u32 magic;
170 };
171
172 #define HWSIM_STA_MAGIC 0x6d537748
173
174 static inline void hwsim_check_sta_magic(struct ieee80211_sta *sta)
175 {
176 struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
177 WARN_ON(sp->magic != HWSIM_STA_MAGIC);
178 }
179
180 static inline void hwsim_set_sta_magic(struct ieee80211_sta *sta)
181 {
182 struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
183 sp->magic = HWSIM_STA_MAGIC;
184 }
185
186 static inline void hwsim_clear_sta_magic(struct ieee80211_sta *sta)
187 {
188 struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
189 sp->magic = 0;
190 }
191
192 static struct class *hwsim_class;
193
194 static struct net_device *hwsim_mon; /* global monitor netdev */
195
196 #define CHAN2G(_freq) { \
197 .band = IEEE80211_BAND_2GHZ, \
198 .center_freq = (_freq), \
199 .hw_value = (_freq), \
200 .max_power = 20, \
201 }
202
203 #define CHAN5G(_freq) { \
204 .band = IEEE80211_BAND_5GHZ, \
205 .center_freq = (_freq), \
206 .hw_value = (_freq), \
207 .max_power = 20, \
208 }
209
210 static const struct ieee80211_channel hwsim_channels_2ghz[] = {
211 CHAN2G(2412), /* Channel 1 */
212 CHAN2G(2417), /* Channel 2 */
213 CHAN2G(2422), /* Channel 3 */
214 CHAN2G(2427), /* Channel 4 */
215 CHAN2G(2432), /* Channel 5 */
216 CHAN2G(2437), /* Channel 6 */
217 CHAN2G(2442), /* Channel 7 */
218 CHAN2G(2447), /* Channel 8 */
219 CHAN2G(2452), /* Channel 9 */
220 CHAN2G(2457), /* Channel 10 */
221 CHAN2G(2462), /* Channel 11 */
222 CHAN2G(2467), /* Channel 12 */
223 CHAN2G(2472), /* Channel 13 */
224 CHAN2G(2484), /* Channel 14 */
225 };
226
227 static const struct ieee80211_channel hwsim_channels_5ghz[] = {
228 CHAN5G(5180), /* Channel 36 */
229 CHAN5G(5200), /* Channel 40 */
230 CHAN5G(5220), /* Channel 44 */
231 CHAN5G(5240), /* Channel 48 */
232
233 CHAN5G(5260), /* Channel 52 */
234 CHAN5G(5280), /* Channel 56 */
235 CHAN5G(5300), /* Channel 60 */
236 CHAN5G(5320), /* Channel 64 */
237
238 CHAN5G(5500), /* Channel 100 */
239 CHAN5G(5520), /* Channel 104 */
240 CHAN5G(5540), /* Channel 108 */
241 CHAN5G(5560), /* Channel 112 */
242 CHAN5G(5580), /* Channel 116 */
243 CHAN5G(5600), /* Channel 120 */
244 CHAN5G(5620), /* Channel 124 */
245 CHAN5G(5640), /* Channel 128 */
246 CHAN5G(5660), /* Channel 132 */
247 CHAN5G(5680), /* Channel 136 */
248 CHAN5G(5700), /* Channel 140 */
249
250 CHAN5G(5745), /* Channel 149 */
251 CHAN5G(5765), /* Channel 153 */
252 CHAN5G(5785), /* Channel 157 */
253 CHAN5G(5805), /* Channel 161 */
254 CHAN5G(5825), /* Channel 165 */
255 };
256
257 static const struct ieee80211_rate hwsim_rates[] = {
258 { .bitrate = 10 },
259 { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
260 { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
261 { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
262 { .bitrate = 60 },
263 { .bitrate = 90 },
264 { .bitrate = 120 },
265 { .bitrate = 180 },
266 { .bitrate = 240 },
267 { .bitrate = 360 },
268 { .bitrate = 480 },
269 { .bitrate = 540 }
270 };
271
272 static spinlock_t hwsim_radio_lock;
273 static struct list_head hwsim_radios;
274
275 struct mac80211_hwsim_data {
276 struct list_head list;
277 struct ieee80211_hw *hw;
278 struct device *dev;
279 struct ieee80211_supported_band bands[2];
280 struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)];
281 struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)];
282 struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
283
284 struct ieee80211_channel *channel;
285 unsigned long beacon_int; /* in jiffies unit */
286 unsigned int rx_filter;
287 int started;
288 struct timer_list beacon_timer;
289 enum ps_mode {
290 PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
291 } ps;
292 bool ps_poll_pending;
293 struct dentry *debugfs;
294 struct dentry *debugfs_ps;
295
296 /*
297 * Only radios in the same group can communicate together (the
298 * channel has to match too). Each bit represents a group. A
299 * radio can be in more then one group.
300 */
301 u64 group;
302 struct dentry *debugfs_group;
303 };
304
305
306 struct hwsim_radiotap_hdr {
307 struct ieee80211_radiotap_header hdr;
308 u8 rt_flags;
309 u8 rt_rate;
310 __le16 rt_channel;
311 __le16 rt_chbitmask;
312 } __attribute__ ((packed));
313
314
315 static int hwsim_mon_xmit(struct sk_buff *skb, struct net_device *dev)
316 {
317 /* TODO: allow packet injection */
318 dev_kfree_skb(skb);
319 return NETDEV_TX_OK;
320 }
321
322
323 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
324 struct sk_buff *tx_skb)
325 {
326 struct mac80211_hwsim_data *data = hw->priv;
327 struct sk_buff *skb;
328 struct hwsim_radiotap_hdr *hdr;
329 u16 flags;
330 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
331 struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
332
333 if (!netif_running(hwsim_mon))
334 return;
335
336 skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
337 if (skb == NULL)
338 return;
339
340 hdr = (struct hwsim_radiotap_hdr *) skb_push(skb, sizeof(*hdr));
341 hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
342 hdr->hdr.it_pad = 0;
343 hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
344 hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
345 (1 << IEEE80211_RADIOTAP_RATE) |
346 (1 << IEEE80211_RADIOTAP_CHANNEL));
347 hdr->rt_flags = 0;
348 hdr->rt_rate = txrate->bitrate / 5;
349 hdr->rt_channel = cpu_to_le16(data->channel->center_freq);
350 flags = IEEE80211_CHAN_2GHZ;
351 if (txrate->flags & IEEE80211_RATE_ERP_G)
352 flags |= IEEE80211_CHAN_OFDM;
353 else
354 flags |= IEEE80211_CHAN_CCK;
355 hdr->rt_chbitmask = cpu_to_le16(flags);
356
357 skb->dev = hwsim_mon;
358 skb_set_mac_header(skb, 0);
359 skb->ip_summed = CHECKSUM_UNNECESSARY;
360 skb->pkt_type = PACKET_OTHERHOST;
361 skb->protocol = htons(ETH_P_802_2);
362 memset(skb->cb, 0, sizeof(skb->cb));
363 netif_rx(skb);
364 }
365
366
367 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
368 struct sk_buff *skb)
369 {
370 switch (data->ps) {
371 case PS_DISABLED:
372 return true;
373 case PS_ENABLED:
374 return false;
375 case PS_AUTO_POLL:
376 /* TODO: accept (some) Beacons by default and other frames only
377 * if pending PS-Poll has been sent */
378 return true;
379 case PS_MANUAL_POLL:
380 /* Allow unicast frames to own address if there is a pending
381 * PS-Poll */
382 if (data->ps_poll_pending &&
383 memcmp(data->hw->wiphy->perm_addr, skb->data + 4,
384 ETH_ALEN) == 0) {
385 data->ps_poll_pending = false;
386 return true;
387 }
388 return false;
389 }
390
391 return true;
392 }
393
394
395 static bool mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
396 struct sk_buff *skb)
397 {
398 struct mac80211_hwsim_data *data = hw->priv, *data2;
399 bool ack = false;
400 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
401 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
402 struct ieee80211_rx_status rx_status;
403
404 memset(&rx_status, 0, sizeof(rx_status));
405 /* TODO: set mactime */
406 rx_status.freq = data->channel->center_freq;
407 rx_status.band = data->channel->band;
408 rx_status.rate_idx = info->control.rates[0].idx;
409 /* TODO: simulate real signal strength (and optional packet loss) */
410 rx_status.signal = -50;
411
412 if (data->ps != PS_DISABLED)
413 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
414
415 /* release the skb's source info */
416 skb_orphan(skb);
417 skb_dst_drop(skb);
418 skb->mark = 0;
419 secpath_reset(skb);
420 nf_reset(skb);
421
422 /* Copy skb to all enabled radios that are on the current frequency */
423 spin_lock(&hwsim_radio_lock);
424 list_for_each_entry(data2, &hwsim_radios, list) {
425 struct sk_buff *nskb;
426
427 if (data == data2)
428 continue;
429
430 if (!data2->started || !hwsim_ps_rx_ok(data2, skb) ||
431 !data->channel || !data2->channel ||
432 data->channel->center_freq != data2->channel->center_freq ||
433 !(data->group & data2->group))
434 continue;
435
436 nskb = skb_copy(skb, GFP_ATOMIC);
437 if (nskb == NULL)
438 continue;
439
440 if (memcmp(hdr->addr1, data2->hw->wiphy->perm_addr,
441 ETH_ALEN) == 0)
442 ack = true;
443 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
444 ieee80211_rx_irqsafe(data2->hw, nskb);
445 }
446 spin_unlock(&hwsim_radio_lock);
447
448 return ack;
449 }
450
451
452 static int mac80211_hwsim_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
453 {
454 bool ack;
455 struct ieee80211_tx_info *txi;
456
457 mac80211_hwsim_monitor_rx(hw, skb);
458
459 if (skb->len < 10) {
460 /* Should not happen; just a sanity check for addr1 use */
461 dev_kfree_skb(skb);
462 return NETDEV_TX_OK;
463 }
464
465 ack = mac80211_hwsim_tx_frame(hw, skb);
466
467 txi = IEEE80211_SKB_CB(skb);
468
469 if (txi->control.vif)
470 hwsim_check_magic(txi->control.vif);
471 if (txi->control.sta)
472 hwsim_check_sta_magic(txi->control.sta);
473
474 ieee80211_tx_info_clear_status(txi);
475 if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
476 txi->flags |= IEEE80211_TX_STAT_ACK;
477 ieee80211_tx_status_irqsafe(hw, skb);
478 return NETDEV_TX_OK;
479 }
480
481
482 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
483 {
484 struct mac80211_hwsim_data *data = hw->priv;
485 printk(KERN_DEBUG "%s:%s\n", wiphy_name(hw->wiphy), __func__);
486 data->started = 1;
487 return 0;
488 }
489
490
491 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
492 {
493 struct mac80211_hwsim_data *data = hw->priv;
494 data->started = 0;
495 del_timer(&data->beacon_timer);
496 printk(KERN_DEBUG "%s:%s\n", wiphy_name(hw->wiphy), __func__);
497 }
498
499
500 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
501 struct ieee80211_if_init_conf *conf)
502 {
503 printk(KERN_DEBUG "%s:%s (type=%d mac_addr=%pM)\n",
504 wiphy_name(hw->wiphy), __func__, conf->type,
505 conf->mac_addr);
506 hwsim_set_magic(conf->vif);
507 return 0;
508 }
509
510
511 static void mac80211_hwsim_remove_interface(
512 struct ieee80211_hw *hw, struct ieee80211_if_init_conf *conf)
513 {
514 printk(KERN_DEBUG "%s:%s (type=%d mac_addr=%pM)\n",
515 wiphy_name(hw->wiphy), __func__, conf->type,
516 conf->mac_addr);
517 hwsim_check_magic(conf->vif);
518 hwsim_clear_magic(conf->vif);
519 }
520
521
522 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
523 struct ieee80211_vif *vif)
524 {
525 struct ieee80211_hw *hw = arg;
526 struct sk_buff *skb;
527 struct ieee80211_tx_info *info;
528
529 hwsim_check_magic(vif);
530
531 if (vif->type != NL80211_IFTYPE_AP &&
532 vif->type != NL80211_IFTYPE_MESH_POINT)
533 return;
534
535 skb = ieee80211_beacon_get(hw, vif);
536 if (skb == NULL)
537 return;
538 info = IEEE80211_SKB_CB(skb);
539
540 mac80211_hwsim_monitor_rx(hw, skb);
541 mac80211_hwsim_tx_frame(hw, skb);
542 dev_kfree_skb(skb);
543 }
544
545
546 static void mac80211_hwsim_beacon(unsigned long arg)
547 {
548 struct ieee80211_hw *hw = (struct ieee80211_hw *) arg;
549 struct mac80211_hwsim_data *data = hw->priv;
550
551 if (!data->started)
552 return;
553
554 ieee80211_iterate_active_interfaces_atomic(
555 hw, mac80211_hwsim_beacon_tx, hw);
556
557 data->beacon_timer.expires = jiffies + data->beacon_int;
558 add_timer(&data->beacon_timer);
559 }
560
561
562 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
563 {
564 struct mac80211_hwsim_data *data = hw->priv;
565 struct ieee80211_conf *conf = &hw->conf;
566
567 printk(KERN_DEBUG "%s:%s (freq=%d idle=%d ps=%d)\n",
568 wiphy_name(hw->wiphy), __func__,
569 conf->channel->center_freq,
570 !!(conf->flags & IEEE80211_CONF_IDLE),
571 !!(conf->flags & IEEE80211_CONF_PS));
572
573 data->channel = conf->channel;
574 if (!data->started || !data->beacon_int)
575 del_timer(&data->beacon_timer);
576 else
577 mod_timer(&data->beacon_timer, jiffies + data->beacon_int);
578
579 return 0;
580 }
581
582
583 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
584 unsigned int changed_flags,
585 unsigned int *total_flags,u64 multicast)
586 {
587 struct mac80211_hwsim_data *data = hw->priv;
588
589 printk(KERN_DEBUG "%s:%s\n", wiphy_name(hw->wiphy), __func__);
590
591 data->rx_filter = 0;
592 if (*total_flags & FIF_PROMISC_IN_BSS)
593 data->rx_filter |= FIF_PROMISC_IN_BSS;
594 if (*total_flags & FIF_ALLMULTI)
595 data->rx_filter |= FIF_ALLMULTI;
596
597 *total_flags = data->rx_filter;
598 }
599
600 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
601 struct ieee80211_vif *vif,
602 struct ieee80211_bss_conf *info,
603 u32 changed)
604 {
605 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
606 struct mac80211_hwsim_data *data = hw->priv;
607
608 hwsim_check_magic(vif);
609
610 printk(KERN_DEBUG "%s:%s(changed=0x%x)\n",
611 wiphy_name(hw->wiphy), __func__, changed);
612
613 if (changed & BSS_CHANGED_BSSID) {
614 printk(KERN_DEBUG "%s:%s: BSSID changed: %pM\n",
615 wiphy_name(hw->wiphy), __func__,
616 info->bssid);
617 memcpy(vp->bssid, info->bssid, ETH_ALEN);
618 }
619
620 if (changed & BSS_CHANGED_ASSOC) {
621 printk(KERN_DEBUG " %s: ASSOC: assoc=%d aid=%d\n",
622 wiphy_name(hw->wiphy), info->assoc, info->aid);
623 vp->assoc = info->assoc;
624 vp->aid = info->aid;
625 }
626
627 if (changed & BSS_CHANGED_BEACON_INT) {
628 printk(KERN_DEBUG " %s: BCNINT: %d\n",
629 wiphy_name(hw->wiphy), info->beacon_int);
630 data->beacon_int = 1024 * info->beacon_int / 1000 * HZ / 1000;
631 if (WARN_ON(!data->beacon_int))
632 data->beacon_int = 1;
633 }
634
635 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
636 printk(KERN_DEBUG " %s: ERP_CTS_PROT: %d\n",
637 wiphy_name(hw->wiphy), info->use_cts_prot);
638 }
639
640 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
641 printk(KERN_DEBUG " %s: ERP_PREAMBLE: %d\n",
642 wiphy_name(hw->wiphy), info->use_short_preamble);
643 }
644
645 if (changed & BSS_CHANGED_ERP_SLOT) {
646 printk(KERN_DEBUG " %s: ERP_SLOT: %d\n",
647 wiphy_name(hw->wiphy), info->use_short_slot);
648 }
649
650 if (changed & BSS_CHANGED_HT) {
651 printk(KERN_DEBUG " %s: HT: op_mode=0x%x\n",
652 wiphy_name(hw->wiphy),
653 info->ht_operation_mode);
654 }
655
656 if (changed & BSS_CHANGED_BASIC_RATES) {
657 printk(KERN_DEBUG " %s: BASIC_RATES: 0x%llx\n",
658 wiphy_name(hw->wiphy),
659 (unsigned long long) info->basic_rates);
660 }
661 }
662
663 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
664 struct ieee80211_vif *vif,
665 enum sta_notify_cmd cmd,
666 struct ieee80211_sta *sta)
667 {
668 hwsim_check_magic(vif);
669 switch (cmd) {
670 case STA_NOTIFY_ADD:
671 hwsim_set_sta_magic(sta);
672 break;
673 case STA_NOTIFY_REMOVE:
674 hwsim_clear_sta_magic(sta);
675 break;
676 case STA_NOTIFY_SLEEP:
677 case STA_NOTIFY_AWAKE:
678 /* TODO: make good use of these flags */
679 break;
680 }
681 }
682
683 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
684 struct ieee80211_sta *sta,
685 bool set)
686 {
687 hwsim_check_sta_magic(sta);
688 return 0;
689 }
690
691 static int mac80211_hwsim_conf_tx(
692 struct ieee80211_hw *hw, u16 queue,
693 const struct ieee80211_tx_queue_params *params)
694 {
695 printk(KERN_DEBUG "%s:%s (queue=%d txop=%d cw_min=%d cw_max=%d "
696 "aifs=%d)\n",
697 wiphy_name(hw->wiphy), __func__, queue,
698 params->txop, params->cw_min, params->cw_max, params->aifs);
699 return 0;
700 }
701
702 #ifdef CONFIG_NL80211_TESTMODE
703 /*
704 * This section contains example code for using netlink
705 * attributes with the testmode command in nl80211.
706 */
707
708 /* These enums need to be kept in sync with userspace */
709 enum hwsim_testmode_attr {
710 __HWSIM_TM_ATTR_INVALID = 0,
711 HWSIM_TM_ATTR_CMD = 1,
712 HWSIM_TM_ATTR_PS = 2,
713
714 /* keep last */
715 __HWSIM_TM_ATTR_AFTER_LAST,
716 HWSIM_TM_ATTR_MAX = __HWSIM_TM_ATTR_AFTER_LAST - 1
717 };
718
719 enum hwsim_testmode_cmd {
720 HWSIM_TM_CMD_SET_PS = 0,
721 HWSIM_TM_CMD_GET_PS = 1,
722 };
723
724 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
725 [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
726 [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
727 };
728
729 static int hwsim_fops_ps_write(void *dat, u64 val);
730
731 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
732 void *data, int len)
733 {
734 struct mac80211_hwsim_data *hwsim = hw->priv;
735 struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
736 struct sk_buff *skb;
737 int err, ps;
738
739 err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
740 hwsim_testmode_policy);
741 if (err)
742 return err;
743
744 if (!tb[HWSIM_TM_ATTR_CMD])
745 return -EINVAL;
746
747 switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
748 case HWSIM_TM_CMD_SET_PS:
749 if (!tb[HWSIM_TM_ATTR_PS])
750 return -EINVAL;
751 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
752 return hwsim_fops_ps_write(hwsim, ps);
753 case HWSIM_TM_CMD_GET_PS:
754 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
755 nla_total_size(sizeof(u32)));
756 if (!skb)
757 return -ENOMEM;
758 NLA_PUT_U32(skb, HWSIM_TM_ATTR_PS, hwsim->ps);
759 return cfg80211_testmode_reply(skb);
760 default:
761 return -EOPNOTSUPP;
762 }
763
764 nla_put_failure:
765 kfree_skb(skb);
766 return -ENOBUFS;
767 }
768 #endif
769
770 static const struct ieee80211_ops mac80211_hwsim_ops =
771 {
772 .tx = mac80211_hwsim_tx,
773 .start = mac80211_hwsim_start,
774 .stop = mac80211_hwsim_stop,
775 .add_interface = mac80211_hwsim_add_interface,
776 .remove_interface = mac80211_hwsim_remove_interface,
777 .config = mac80211_hwsim_config,
778 .configure_filter = mac80211_hwsim_configure_filter,
779 .bss_info_changed = mac80211_hwsim_bss_info_changed,
780 .sta_notify = mac80211_hwsim_sta_notify,
781 .set_tim = mac80211_hwsim_set_tim,
782 .conf_tx = mac80211_hwsim_conf_tx,
783 CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)
784 };
785
786
787 static void mac80211_hwsim_free(void)
788 {
789 struct list_head tmplist, *i, *tmp;
790 struct mac80211_hwsim_data *data, *tmpdata;
791
792 INIT_LIST_HEAD(&tmplist);
793
794 spin_lock_bh(&hwsim_radio_lock);
795 list_for_each_safe(i, tmp, &hwsim_radios)
796 list_move(i, &tmplist);
797 spin_unlock_bh(&hwsim_radio_lock);
798
799 list_for_each_entry_safe(data, tmpdata, &tmplist, list) {
800 debugfs_remove(data->debugfs_group);
801 debugfs_remove(data->debugfs_ps);
802 debugfs_remove(data->debugfs);
803 ieee80211_unregister_hw(data->hw);
804 device_unregister(data->dev);
805 ieee80211_free_hw(data->hw);
806 }
807 class_destroy(hwsim_class);
808 }
809
810
811 static struct device_driver mac80211_hwsim_driver = {
812 .name = "mac80211_hwsim"
813 };
814
815 static const struct net_device_ops hwsim_netdev_ops = {
816 .ndo_start_xmit = hwsim_mon_xmit,
817 .ndo_change_mtu = eth_change_mtu,
818 .ndo_set_mac_address = eth_mac_addr,
819 .ndo_validate_addr = eth_validate_addr,
820 };
821
822 static void hwsim_mon_setup(struct net_device *dev)
823 {
824 dev->netdev_ops = &hwsim_netdev_ops;
825 dev->destructor = free_netdev;
826 ether_setup(dev);
827 dev->tx_queue_len = 0;
828 dev->type = ARPHRD_IEEE80211_RADIOTAP;
829 memset(dev->dev_addr, 0, ETH_ALEN);
830 dev->dev_addr[0] = 0x12;
831 }
832
833
834 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
835 {
836 struct mac80211_hwsim_data *data = dat;
837 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
838 struct sk_buff *skb;
839 struct ieee80211_pspoll *pspoll;
840
841 if (!vp->assoc)
842 return;
843
844 printk(KERN_DEBUG "%s:%s: send PS-Poll to %pM for aid %d\n",
845 wiphy_name(data->hw->wiphy), __func__, vp->bssid, vp->aid);
846
847 skb = dev_alloc_skb(sizeof(*pspoll));
848 if (!skb)
849 return;
850 pspoll = (void *) skb_put(skb, sizeof(*pspoll));
851 pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
852 IEEE80211_STYPE_PSPOLL |
853 IEEE80211_FCTL_PM);
854 pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
855 memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
856 memcpy(pspoll->ta, mac, ETH_ALEN);
857 if (!mac80211_hwsim_tx_frame(data->hw, skb))
858 printk(KERN_DEBUG "%s: PS-Poll frame not ack'ed\n", __func__);
859 dev_kfree_skb(skb);
860 }
861
862
863 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
864 struct ieee80211_vif *vif, int ps)
865 {
866 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
867 struct sk_buff *skb;
868 struct ieee80211_hdr *hdr;
869
870 if (!vp->assoc)
871 return;
872
873 printk(KERN_DEBUG "%s:%s: send data::nullfunc to %pM ps=%d\n",
874 wiphy_name(data->hw->wiphy), __func__, vp->bssid, ps);
875
876 skb = dev_alloc_skb(sizeof(*hdr));
877 if (!skb)
878 return;
879 hdr = (void *) skb_put(skb, sizeof(*hdr) - ETH_ALEN);
880 hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
881 IEEE80211_STYPE_NULLFUNC |
882 (ps ? IEEE80211_FCTL_PM : 0));
883 hdr->duration_id = cpu_to_le16(0);
884 memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
885 memcpy(hdr->addr2, mac, ETH_ALEN);
886 memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
887 if (!mac80211_hwsim_tx_frame(data->hw, skb))
888 printk(KERN_DEBUG "%s: nullfunc frame not ack'ed\n", __func__);
889 dev_kfree_skb(skb);
890 }
891
892
893 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
894 struct ieee80211_vif *vif)
895 {
896 struct mac80211_hwsim_data *data = dat;
897 hwsim_send_nullfunc(data, mac, vif, 1);
898 }
899
900
901 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
902 struct ieee80211_vif *vif)
903 {
904 struct mac80211_hwsim_data *data = dat;
905 hwsim_send_nullfunc(data, mac, vif, 0);
906 }
907
908
909 static int hwsim_fops_ps_read(void *dat, u64 *val)
910 {
911 struct mac80211_hwsim_data *data = dat;
912 *val = data->ps;
913 return 0;
914 }
915
916 static int hwsim_fops_ps_write(void *dat, u64 val)
917 {
918 struct mac80211_hwsim_data *data = dat;
919 enum ps_mode old_ps;
920
921 if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
922 val != PS_MANUAL_POLL)
923 return -EINVAL;
924
925 old_ps = data->ps;
926 data->ps = val;
927
928 if (val == PS_MANUAL_POLL) {
929 ieee80211_iterate_active_interfaces(data->hw,
930 hwsim_send_ps_poll, data);
931 data->ps_poll_pending = true;
932 } else if (old_ps == PS_DISABLED && val != PS_DISABLED) {
933 ieee80211_iterate_active_interfaces(data->hw,
934 hwsim_send_nullfunc_ps,
935 data);
936 } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
937 ieee80211_iterate_active_interfaces(data->hw,
938 hwsim_send_nullfunc_no_ps,
939 data);
940 }
941
942 return 0;
943 }
944
945 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
946 "%llu\n");
947
948
949 static int hwsim_fops_group_read(void *dat, u64 *val)
950 {
951 struct mac80211_hwsim_data *data = dat;
952 *val = data->group;
953 return 0;
954 }
955
956 static int hwsim_fops_group_write(void *dat, u64 val)
957 {
958 struct mac80211_hwsim_data *data = dat;
959 data->group = val;
960 return 0;
961 }
962
963 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
964 hwsim_fops_group_read, hwsim_fops_group_write,
965 "%llx\n");
966
967 static int __init init_mac80211_hwsim(void)
968 {
969 int i, err = 0;
970 u8 addr[ETH_ALEN];
971 struct mac80211_hwsim_data *data;
972 struct ieee80211_hw *hw;
973 enum ieee80211_band band;
974
975 if (radios < 1 || radios > 100)
976 return -EINVAL;
977
978 spin_lock_init(&hwsim_radio_lock);
979 INIT_LIST_HEAD(&hwsim_radios);
980
981 hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
982 if (IS_ERR(hwsim_class))
983 return PTR_ERR(hwsim_class);
984
985 memset(addr, 0, ETH_ALEN);
986 addr[0] = 0x02;
987
988 for (i = 0; i < radios; i++) {
989 printk(KERN_DEBUG "mac80211_hwsim: Initializing radio %d\n",
990 i);
991 hw = ieee80211_alloc_hw(sizeof(*data), &mac80211_hwsim_ops);
992 if (!hw) {
993 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw "
994 "failed\n");
995 err = -ENOMEM;
996 goto failed;
997 }
998 data = hw->priv;
999 data->hw = hw;
1000
1001 data->dev = device_create(hwsim_class, NULL, 0, hw,
1002 "hwsim%d", i);
1003 if (IS_ERR(data->dev)) {
1004 printk(KERN_DEBUG
1005 "mac80211_hwsim: device_create "
1006 "failed (%ld)\n", PTR_ERR(data->dev));
1007 err = -ENOMEM;
1008 goto failed_drvdata;
1009 }
1010 data->dev->driver = &mac80211_hwsim_driver;
1011
1012 SET_IEEE80211_DEV(hw, data->dev);
1013 addr[3] = i >> 8;
1014 addr[4] = i;
1015 SET_IEEE80211_PERM_ADDR(hw, addr);
1016
1017 hw->channel_change_time = 1;
1018 hw->queues = 4;
1019 hw->wiphy->interface_modes =
1020 BIT(NL80211_IFTYPE_STATION) |
1021 BIT(NL80211_IFTYPE_AP) |
1022 BIT(NL80211_IFTYPE_MESH_POINT);
1023
1024 hw->flags = IEEE80211_HW_MFP_CAPABLE |
1025 IEEE80211_HW_SIGNAL_DBM;
1026
1027 /* ask mac80211 to reserve space for magic */
1028 hw->vif_data_size = sizeof(struct hwsim_vif_priv);
1029 hw->sta_data_size = sizeof(struct hwsim_sta_priv);
1030
1031 memcpy(data->channels_2ghz, hwsim_channels_2ghz,
1032 sizeof(hwsim_channels_2ghz));
1033 memcpy(data->channels_5ghz, hwsim_channels_5ghz,
1034 sizeof(hwsim_channels_5ghz));
1035 memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
1036
1037 for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) {
1038 struct ieee80211_supported_band *sband = &data->bands[band];
1039 switch (band) {
1040 case IEEE80211_BAND_2GHZ:
1041 sband->channels = data->channels_2ghz;
1042 sband->n_channels =
1043 ARRAY_SIZE(hwsim_channels_2ghz);
1044 break;
1045 case IEEE80211_BAND_5GHZ:
1046 sband->channels = data->channels_5ghz;
1047 sband->n_channels =
1048 ARRAY_SIZE(hwsim_channels_5ghz);
1049 break;
1050 default:
1051 break;
1052 }
1053
1054 sband->bitrates = data->rates;
1055 sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
1056
1057 sband->ht_cap.ht_supported = true;
1058 sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
1059 IEEE80211_HT_CAP_GRN_FLD |
1060 IEEE80211_HT_CAP_SGI_40 |
1061 IEEE80211_HT_CAP_DSSSCCK40;
1062 sband->ht_cap.ampdu_factor = 0x3;
1063 sband->ht_cap.ampdu_density = 0x6;
1064 memset(&sband->ht_cap.mcs, 0,
1065 sizeof(sband->ht_cap.mcs));
1066 sband->ht_cap.mcs.rx_mask[0] = 0xff;
1067 sband->ht_cap.mcs.rx_mask[1] = 0xff;
1068 sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
1069
1070 hw->wiphy->bands[band] = sband;
1071 }
1072 /* By default all radios are belonging to the first group */
1073 data->group = 1;
1074
1075 /* Work to be done prior to ieee80211_register_hw() */
1076 switch (regtest) {
1077 case HWSIM_REGTEST_DISABLED:
1078 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
1079 case HWSIM_REGTEST_DRIVER_REG_ALL:
1080 case HWSIM_REGTEST_DIFF_COUNTRY:
1081 /*
1082 * Nothing to be done for driver regulatory domain
1083 * hints prior to ieee80211_register_hw()
1084 */
1085 break;
1086 case HWSIM_REGTEST_WORLD_ROAM:
1087 if (i == 0) {
1088 hw->wiphy->custom_regulatory = true;
1089 wiphy_apply_custom_regulatory(hw->wiphy,
1090 &hwsim_world_regdom_custom_01);
1091 }
1092 break;
1093 case HWSIM_REGTEST_CUSTOM_WORLD:
1094 hw->wiphy->custom_regulatory = true;
1095 wiphy_apply_custom_regulatory(hw->wiphy,
1096 &hwsim_world_regdom_custom_01);
1097 break;
1098 case HWSIM_REGTEST_CUSTOM_WORLD_2:
1099 if (i == 0) {
1100 hw->wiphy->custom_regulatory = true;
1101 wiphy_apply_custom_regulatory(hw->wiphy,
1102 &hwsim_world_regdom_custom_01);
1103 } else if (i == 1) {
1104 hw->wiphy->custom_regulatory = true;
1105 wiphy_apply_custom_regulatory(hw->wiphy,
1106 &hwsim_world_regdom_custom_02);
1107 }
1108 break;
1109 case HWSIM_REGTEST_STRICT_ALL:
1110 hw->wiphy->strict_regulatory = true;
1111 break;
1112 case HWSIM_REGTEST_STRICT_FOLLOW:
1113 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
1114 if (i == 0)
1115 hw->wiphy->strict_regulatory = true;
1116 break;
1117 case HWSIM_REGTEST_ALL:
1118 if (i == 0) {
1119 hw->wiphy->custom_regulatory = true;
1120 wiphy_apply_custom_regulatory(hw->wiphy,
1121 &hwsim_world_regdom_custom_01);
1122 } else if (i == 1) {
1123 hw->wiphy->custom_regulatory = true;
1124 wiphy_apply_custom_regulatory(hw->wiphy,
1125 &hwsim_world_regdom_custom_02);
1126 } else if (i == 4)
1127 hw->wiphy->strict_regulatory = true;
1128 break;
1129 default:
1130 break;
1131 }
1132
1133 /* give the regulatory workqueue a chance to run */
1134 if (regtest)
1135 schedule_timeout_interruptible(1);
1136 err = ieee80211_register_hw(hw);
1137 if (err < 0) {
1138 printk(KERN_DEBUG "mac80211_hwsim: "
1139 "ieee80211_register_hw failed (%d)\n", err);
1140 goto failed_hw;
1141 }
1142
1143 /* Work to be done after to ieee80211_register_hw() */
1144 switch (regtest) {
1145 case HWSIM_REGTEST_WORLD_ROAM:
1146 case HWSIM_REGTEST_DISABLED:
1147 break;
1148 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
1149 if (!i)
1150 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1151 break;
1152 case HWSIM_REGTEST_DRIVER_REG_ALL:
1153 case HWSIM_REGTEST_STRICT_ALL:
1154 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1155 break;
1156 case HWSIM_REGTEST_DIFF_COUNTRY:
1157 if (i < ARRAY_SIZE(hwsim_alpha2s))
1158 regulatory_hint(hw->wiphy, hwsim_alpha2s[i]);
1159 break;
1160 case HWSIM_REGTEST_CUSTOM_WORLD:
1161 case HWSIM_REGTEST_CUSTOM_WORLD_2:
1162 /*
1163 * Nothing to be done for custom world regulatory
1164 * domains after to ieee80211_register_hw
1165 */
1166 break;
1167 case HWSIM_REGTEST_STRICT_FOLLOW:
1168 if (i == 0)
1169 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1170 break;
1171 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
1172 if (i == 0)
1173 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1174 else if (i == 1)
1175 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
1176 break;
1177 case HWSIM_REGTEST_ALL:
1178 if (i == 2)
1179 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1180 else if (i == 3)
1181 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
1182 else if (i == 4)
1183 regulatory_hint(hw->wiphy, hwsim_alpha2s[2]);
1184 break;
1185 default:
1186 break;
1187 }
1188
1189 printk(KERN_DEBUG "%s: hwaddr %pM registered\n",
1190 wiphy_name(hw->wiphy),
1191 hw->wiphy->perm_addr);
1192
1193 data->debugfs = debugfs_create_dir("hwsim",
1194 hw->wiphy->debugfsdir);
1195 data->debugfs_ps = debugfs_create_file("ps", 0666,
1196 data->debugfs, data,
1197 &hwsim_fops_ps);
1198 data->debugfs_group = debugfs_create_file("group", 0666,
1199 data->debugfs, data,
1200 &hwsim_fops_group);
1201
1202 setup_timer(&data->beacon_timer, mac80211_hwsim_beacon,
1203 (unsigned long) hw);
1204
1205 list_add_tail(&data->list, &hwsim_radios);
1206 }
1207
1208 hwsim_mon = alloc_netdev(0, "hwsim%d", hwsim_mon_setup);
1209 if (hwsim_mon == NULL)
1210 goto failed;
1211
1212 rtnl_lock();
1213
1214 err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
1215 if (err < 0)
1216 goto failed_mon;
1217
1218
1219 err = register_netdevice(hwsim_mon);
1220 if (err < 0)
1221 goto failed_mon;
1222
1223 rtnl_unlock();
1224
1225 return 0;
1226
1227 failed_mon:
1228 rtnl_unlock();
1229 free_netdev(hwsim_mon);
1230 mac80211_hwsim_free();
1231 return err;
1232
1233 failed_hw:
1234 device_unregister(data->dev);
1235 failed_drvdata:
1236 ieee80211_free_hw(hw);
1237 failed:
1238 mac80211_hwsim_free();
1239 return err;
1240 }
1241
1242
1243 static void __exit exit_mac80211_hwsim(void)
1244 {
1245 printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
1246
1247 mac80211_hwsim_free();
1248 unregister_netdev(hwsim_mon);
1249 }
1250
1251
1252 module_init(init_mac80211_hwsim);
1253 module_exit(exit_mac80211_hwsim);
Linux kernel - Deliverables
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