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WIRELESS: at76c50x, remove unneeded NULL check
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / net / wireless / mac80211_hwsim.c
blob7eaaa3bab54780a334bcd70c99fb2d42b5862b92
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 * - Add TSF sync and fix IBSS beacon transmission by adding
13 * competition for "air time" at TBTT
14 * - RX filtering based on filter configuration (data->rx_filter)
15 */
16
17 #include <linux/list.h>
18 #include <linux/slab.h>
19 #include <linux/spinlock.h>
20 #include <net/dst.h>
21 #include <net/xfrm.h>
22 #include <net/mac80211.h>
23 #include <net/ieee80211_radiotap.h>
24 #include <linux/if_arp.h>
25 #include <linux/rtnetlink.h>
26 #include <linux/etherdevice.h>
27 #include <linux/debugfs.h>
28
29 MODULE_AUTHOR("Jouni Malinen");
30 MODULE_DESCRIPTION("Software simulator of 802.11 radio(s) for mac80211");
31 MODULE_LICENSE("GPL");
32
33 static int radios = 2;
34 module_param(radios, int, 0444);
35 MODULE_PARM_DESC(radios, "Number of simulated radios");
36
37 static bool fake_hw_scan;
38 module_param(fake_hw_scan, bool, 0444);
39 MODULE_PARM_DESC(fake_hw_scan, "Install fake (no-op) hw-scan handler");
40
41 /**
42 * enum hwsim_regtest - the type of regulatory tests we offer
43 *
44 * These are the different values you can use for the regtest
45 * module parameter. This is useful to help test world roaming
46 * and the driver regulatory_hint() call and combinations of these.
47 * If you want to do specific alpha2 regulatory domain tests simply
48 * use the userspace regulatory request as that will be respected as
49 * well without the need of this module parameter. This is designed
50 * only for testing the driver regulatory request, world roaming
51 * and all possible combinations.
52 *
53 * @HWSIM_REGTEST_DISABLED: No regulatory tests are performed,
54 * this is the default value.
55 * @HWSIM_REGTEST_DRIVER_REG_FOLLOW: Used for testing the driver regulatory
56 * hint, only one driver regulatory hint will be sent as such the
57 * secondary radios are expected to follow.
58 * @HWSIM_REGTEST_DRIVER_REG_ALL: Used for testing the driver regulatory
59 * request with all radios reporting the same regulatory domain.
60 * @HWSIM_REGTEST_DIFF_COUNTRY: Used for testing the drivers calling
61 * different regulatory domains requests. Expected behaviour is for
62 * an intersection to occur but each device will still use their
63 * respective regulatory requested domains. Subsequent radios will
64 * use the resulting intersection.
65 * @HWSIM_REGTEST_WORLD_ROAM: Used for testing the world roaming. We acomplish
66 * this by using a custom beacon-capable regulatory domain for the first
67 * radio. All other device world roam.
68 * @HWSIM_REGTEST_CUSTOM_WORLD: Used for testing the custom world regulatory
69 * domain requests. All radios will adhere to this custom world regulatory
70 * domain.
71 * @HWSIM_REGTEST_CUSTOM_WORLD_2: Used for testing 2 custom world regulatory
72 * domain requests. The first radio will adhere to the first custom world
73 * regulatory domain, the second one to the second custom world regulatory
74 * domain. All other devices will world roam.
75 * @HWSIM_REGTEST_STRICT_FOLLOW_: Used for testing strict regulatory domain
76 * settings, only the first radio will send a regulatory domain request
77 * and use strict settings. The rest of the radios are expected to follow.
78 * @HWSIM_REGTEST_STRICT_ALL: Used for testing strict regulatory domain
79 * settings. All radios will adhere to this.
80 * @HWSIM_REGTEST_STRICT_AND_DRIVER_REG: Used for testing strict regulatory
81 * domain settings, combined with secondary driver regulatory domain
82 * settings. The first radio will get a strict regulatory domain setting
83 * using the first driver regulatory request and the second radio will use
84 * non-strict settings using the second driver regulatory request. All
85 * other devices should follow the intersection created between the
86 * first two.
87 * @HWSIM_REGTEST_ALL: Used for testing every possible mix. You will need
88 * at least 6 radios for a complete test. We will test in this order:
89 * 1 - driver custom world regulatory domain
90 * 2 - second custom world regulatory domain
91 * 3 - first driver regulatory domain request
92 * 4 - second driver regulatory domain request
93 * 5 - strict regulatory domain settings using the third driver regulatory
94 * domain request
95 * 6 and on - should follow the intersection of the 3rd, 4rth and 5th radio
96 * regulatory requests.
97 */
98 enum hwsim_regtest {
99 HWSIM_REGTEST_DISABLED = 0,
100 HWSIM_REGTEST_DRIVER_REG_FOLLOW = 1,
101 HWSIM_REGTEST_DRIVER_REG_ALL = 2,
102 HWSIM_REGTEST_DIFF_COUNTRY = 3,
103 HWSIM_REGTEST_WORLD_ROAM = 4,
104 HWSIM_REGTEST_CUSTOM_WORLD = 5,
105 HWSIM_REGTEST_CUSTOM_WORLD_2 = 6,
106 HWSIM_REGTEST_STRICT_FOLLOW = 7,
107 HWSIM_REGTEST_STRICT_ALL = 8,
108 HWSIM_REGTEST_STRICT_AND_DRIVER_REG = 9,
109 HWSIM_REGTEST_ALL = 10,
110 };
111
112 /* Set to one of the HWSIM_REGTEST_* values above */
113 static int regtest = HWSIM_REGTEST_DISABLED;
114 module_param(regtest, int, 0444);
115 MODULE_PARM_DESC(regtest, "The type of regulatory test we want to run");
116
117 static const char *hwsim_alpha2s[] = {
118 "FI",
119 "AL",
120 "US",
121 "DE",
122 "JP",
123 "AL",
124 };
125
126 static const struct ieee80211_regdomain hwsim_world_regdom_custom_01 = {
127 .n_reg_rules = 4,
128 .alpha2 = "99",
129 .reg_rules = {
130 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
131 REG_RULE(2484-10, 2484+10, 40, 0, 20, 0),
132 REG_RULE(5150-10, 5240+10, 40, 0, 30, 0),
133 REG_RULE(5745-10, 5825+10, 40, 0, 30, 0),
134 }
135 };
136
137 static const struct ieee80211_regdomain hwsim_world_regdom_custom_02 = {
138 .n_reg_rules = 2,
139 .alpha2 = "99",
140 .reg_rules = {
141 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
142 REG_RULE(5725-10, 5850+10, 40, 0, 30,
143 NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS),
144 }
145 };
146
147 struct hwsim_vif_priv {
148 u32 magic;
149 u8 bssid[ETH_ALEN];
150 bool assoc;
151 u16 aid;
152 };
153
154 #define HWSIM_VIF_MAGIC 0x69537748
155
156 static inline void hwsim_check_magic(struct ieee80211_vif *vif)
157 {
158 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
159 WARN_ON(vp->magic != HWSIM_VIF_MAGIC);
160 }
161
162 static inline void hwsim_set_magic(struct ieee80211_vif *vif)
163 {
164 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
165 vp->magic = HWSIM_VIF_MAGIC;
166 }
167
168 static inline void hwsim_clear_magic(struct ieee80211_vif *vif)
169 {
170 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
171 vp->magic = 0;
172 }
173
174 struct hwsim_sta_priv {
175 u32 magic;
176 };
177
178 #define HWSIM_STA_MAGIC 0x6d537748
179
180 static inline void hwsim_check_sta_magic(struct ieee80211_sta *sta)
181 {
182 struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
183 WARN_ON(sp->magic != HWSIM_STA_MAGIC);
184 }
185
186 static inline void hwsim_set_sta_magic(struct ieee80211_sta *sta)
187 {
188 struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
189 sp->magic = HWSIM_STA_MAGIC;
190 }
191
192 static inline void hwsim_clear_sta_magic(struct ieee80211_sta *sta)
193 {
194 struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
195 sp->magic = 0;
196 }
197
198 static struct class *hwsim_class;
199
200 static struct net_device *hwsim_mon; /* global monitor netdev */
201
202 #define CHAN2G(_freq) { \
203 .band = IEEE80211_BAND_2GHZ, \
204 .center_freq = (_freq), \
205 .hw_value = (_freq), \
206 .max_power = 20, \
207 }
208
209 #define CHAN5G(_freq) { \
210 .band = IEEE80211_BAND_5GHZ, \
211 .center_freq = (_freq), \
212 .hw_value = (_freq), \
213 .max_power = 20, \
214 }
215
216 static const struct ieee80211_channel hwsim_channels_2ghz[] = {
217 CHAN2G(2412), /* Channel 1 */
218 CHAN2G(2417), /* Channel 2 */
219 CHAN2G(2422), /* Channel 3 */
220 CHAN2G(2427), /* Channel 4 */
221 CHAN2G(2432), /* Channel 5 */
222 CHAN2G(2437), /* Channel 6 */
223 CHAN2G(2442), /* Channel 7 */
224 CHAN2G(2447), /* Channel 8 */
225 CHAN2G(2452), /* Channel 9 */
226 CHAN2G(2457), /* Channel 10 */
227 CHAN2G(2462), /* Channel 11 */
228 CHAN2G(2467), /* Channel 12 */
229 CHAN2G(2472), /* Channel 13 */
230 CHAN2G(2484), /* Channel 14 */
231 };
232
233 static const struct ieee80211_channel hwsim_channels_5ghz[] = {
234 CHAN5G(5180), /* Channel 36 */
235 CHAN5G(5200), /* Channel 40 */
236 CHAN5G(5220), /* Channel 44 */
237 CHAN5G(5240), /* Channel 48 */
238
239 CHAN5G(5260), /* Channel 52 */
240 CHAN5G(5280), /* Channel 56 */
241 CHAN5G(5300), /* Channel 60 */
242 CHAN5G(5320), /* Channel 64 */
243
244 CHAN5G(5500), /* Channel 100 */
245 CHAN5G(5520), /* Channel 104 */
246 CHAN5G(5540), /* Channel 108 */
247 CHAN5G(5560), /* Channel 112 */
248 CHAN5G(5580), /* Channel 116 */
249 CHAN5G(5600), /* Channel 120 */
250 CHAN5G(5620), /* Channel 124 */
251 CHAN5G(5640), /* Channel 128 */
252 CHAN5G(5660), /* Channel 132 */
253 CHAN5G(5680), /* Channel 136 */
254 CHAN5G(5700), /* Channel 140 */
255
256 CHAN5G(5745), /* Channel 149 */
257 CHAN5G(5765), /* Channel 153 */
258 CHAN5G(5785), /* Channel 157 */
259 CHAN5G(5805), /* Channel 161 */
260 CHAN5G(5825), /* Channel 165 */
261 };
262
263 static const struct ieee80211_rate hwsim_rates[] = {
264 { .bitrate = 10 },
265 { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
266 { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
267 { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
268 { .bitrate = 60 },
269 { .bitrate = 90 },
270 { .bitrate = 120 },
271 { .bitrate = 180 },
272 { .bitrate = 240 },
273 { .bitrate = 360 },
274 { .bitrate = 480 },
275 { .bitrate = 540 }
276 };
277
278 static spinlock_t hwsim_radio_lock;
279 static struct list_head hwsim_radios;
280
281 struct mac80211_hwsim_data {
282 struct list_head list;
283 struct ieee80211_hw *hw;
284 struct device *dev;
285 struct ieee80211_supported_band bands[2];
286 struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)];
287 struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)];
288 struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
289
290 struct mac_address addresses[2];
291
292 struct ieee80211_channel *channel;
293 unsigned long beacon_int; /* in jiffies unit */
294 unsigned int rx_filter;
295 bool started, idle, scanning;
296 struct mutex mutex;
297 struct timer_list beacon_timer;
298 enum ps_mode {
299 PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
300 } ps;
301 bool ps_poll_pending;
302 struct dentry *debugfs;
303 struct dentry *debugfs_ps;
304
305 /*
306 * Only radios in the same group can communicate together (the
307 * channel has to match too). Each bit represents a group. A
308 * radio can be in more then one group.
309 */
310 u64 group;
311 struct dentry *debugfs_group;
312 };
313
314
315 struct hwsim_radiotap_hdr {
316 struct ieee80211_radiotap_header hdr;
317 u8 rt_flags;
318 u8 rt_rate;
319 __le16 rt_channel;
320 __le16 rt_chbitmask;
321 } __packed;
322
323
324 static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
325 struct net_device *dev)
326 {
327 /* TODO: allow packet injection */
328 dev_kfree_skb(skb);
329 return NETDEV_TX_OK;
330 }
331
332
333 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
334 struct sk_buff *tx_skb)
335 {
336 struct mac80211_hwsim_data *data = hw->priv;
337 struct sk_buff *skb;
338 struct hwsim_radiotap_hdr *hdr;
339 u16 flags;
340 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
341 struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
342
343 if (!netif_running(hwsim_mon))
344 return;
345
346 skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
347 if (skb == NULL)
348 return;
349
350 hdr = (struct hwsim_radiotap_hdr *) skb_push(skb, sizeof(*hdr));
351 hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
352 hdr->hdr.it_pad = 0;
353 hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
354 hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
355 (1 << IEEE80211_RADIOTAP_RATE) |
356 (1 << IEEE80211_RADIOTAP_CHANNEL));
357 hdr->rt_flags = 0;
358 hdr->rt_rate = txrate->bitrate / 5;
359 hdr->rt_channel = cpu_to_le16(data->channel->center_freq);
360 flags = IEEE80211_CHAN_2GHZ;
361 if (txrate->flags & IEEE80211_RATE_ERP_G)
362 flags |= IEEE80211_CHAN_OFDM;
363 else
364 flags |= IEEE80211_CHAN_CCK;
365 hdr->rt_chbitmask = cpu_to_le16(flags);
366
367 skb->dev = hwsim_mon;
368 skb_set_mac_header(skb, 0);
369 skb->ip_summed = CHECKSUM_UNNECESSARY;
370 skb->pkt_type = PACKET_OTHERHOST;
371 skb->protocol = htons(ETH_P_802_2);
372 memset(skb->cb, 0, sizeof(skb->cb));
373 netif_rx(skb);
374 }
375
376
377 static void mac80211_hwsim_monitor_ack(struct ieee80211_hw *hw, const u8 *addr)
378 {
379 struct mac80211_hwsim_data *data = hw->priv;
380 struct sk_buff *skb;
381 struct hwsim_radiotap_hdr *hdr;
382 u16 flags;
383 struct ieee80211_hdr *hdr11;
384
385 if (!netif_running(hwsim_mon))
386 return;
387
388 skb = dev_alloc_skb(100);
389 if (skb == NULL)
390 return;
391
392 hdr = (struct hwsim_radiotap_hdr *) skb_put(skb, sizeof(*hdr));
393 hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
394 hdr->hdr.it_pad = 0;
395 hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
396 hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
397 (1 << IEEE80211_RADIOTAP_CHANNEL));
398 hdr->rt_flags = 0;
399 hdr->rt_rate = 0;
400 hdr->rt_channel = cpu_to_le16(data->channel->center_freq);
401 flags = IEEE80211_CHAN_2GHZ;
402 hdr->rt_chbitmask = cpu_to_le16(flags);
403
404 hdr11 = (struct ieee80211_hdr *) skb_put(skb, 10);
405 hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
406 IEEE80211_STYPE_ACK);
407 hdr11->duration_id = cpu_to_le16(0);
408 memcpy(hdr11->addr1, addr, ETH_ALEN);
409
410 skb->dev = hwsim_mon;
411 skb_set_mac_header(skb, 0);
412 skb->ip_summed = CHECKSUM_UNNECESSARY;
413 skb->pkt_type = PACKET_OTHERHOST;
414 skb->protocol = htons(ETH_P_802_2);
415 memset(skb->cb, 0, sizeof(skb->cb));
416 netif_rx(skb);
417 }
418
419
420 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
421 struct sk_buff *skb)
422 {
423 switch (data->ps) {
424 case PS_DISABLED:
425 return true;
426 case PS_ENABLED:
427 return false;
428 case PS_AUTO_POLL:
429 /* TODO: accept (some) Beacons by default and other frames only
430 * if pending PS-Poll has been sent */
431 return true;
432 case PS_MANUAL_POLL:
433 /* Allow unicast frames to own address if there is a pending
434 * PS-Poll */
435 if (data->ps_poll_pending &&
436 memcmp(data->hw->wiphy->perm_addr, skb->data + 4,
437 ETH_ALEN) == 0) {
438 data->ps_poll_pending = false;
439 return true;
440 }
441 return false;
442 }
443
444 return true;
445 }
446
447
448 struct mac80211_hwsim_addr_match_data {
449 bool ret;
450 const u8 *addr;
451 };
452
453 static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
454 struct ieee80211_vif *vif)
455 {
456 struct mac80211_hwsim_addr_match_data *md = data;
457 if (memcmp(mac, md->addr, ETH_ALEN) == 0)
458 md->ret = true;
459 }
460
461
462 static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
463 const u8 *addr)
464 {
465 struct mac80211_hwsim_addr_match_data md;
466
467 if (memcmp(addr, data->hw->wiphy->perm_addr, ETH_ALEN) == 0)
468 return true;
469
470 md.ret = false;
471 md.addr = addr;
472 ieee80211_iterate_active_interfaces_atomic(data->hw,
473 mac80211_hwsim_addr_iter,
474 &md);
475
476 return md.ret;
477 }
478
479
480 static bool mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
481 struct sk_buff *skb)
482 {
483 struct mac80211_hwsim_data *data = hw->priv, *data2;
484 bool ack = false;
485 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
486 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
487 struct ieee80211_rx_status rx_status;
488
489 if (data->idle) {
490 wiphy_debug(hw->wiphy, "Trying to TX when idle - reject\n");
491 return false;
492 }
493
494 memset(&rx_status, 0, sizeof(rx_status));
495 /* TODO: set mactime */
496 rx_status.freq = data->channel->center_freq;
497 rx_status.band = data->channel->band;
498 rx_status.rate_idx = info->control.rates[0].idx;
499 /* TODO: simulate real signal strength (and optional packet loss) */
500 rx_status.signal = -50;
501
502 if (data->ps != PS_DISABLED)
503 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
504
505 /* release the skb's source info */
506 skb_orphan(skb);
507 skb_dst_drop(skb);
508 skb->mark = 0;
509 secpath_reset(skb);
510 nf_reset(skb);
511
512 /* Copy skb to all enabled radios that are on the current frequency */
513 spin_lock(&hwsim_radio_lock);
514 list_for_each_entry(data2, &hwsim_radios, list) {
515 struct sk_buff *nskb;
516
517 if (data == data2)
518 continue;
519
520 if (data2->idle || !data2->started ||
521 !hwsim_ps_rx_ok(data2, skb) ||
522 !data->channel || !data2->channel ||
523 data->channel->center_freq != data2->channel->center_freq ||
524 !(data->group & data2->group))
525 continue;
526
527 nskb = skb_copy(skb, GFP_ATOMIC);
528 if (nskb == NULL)
529 continue;
530
531 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
532 ack = true;
533 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
534 ieee80211_rx_irqsafe(data2->hw, nskb);
535 }
536 spin_unlock(&hwsim_radio_lock);
537
538 return ack;
539 }
540
541
542 static int mac80211_hwsim_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
543 {
544 bool ack;
545 struct ieee80211_tx_info *txi;
546
547 mac80211_hwsim_monitor_rx(hw, skb);
548
549 if (skb->len < 10) {
550 /* Should not happen; just a sanity check for addr1 use */
551 dev_kfree_skb(skb);
552 return NETDEV_TX_OK;
553 }
554
555 ack = mac80211_hwsim_tx_frame(hw, skb);
556 if (ack && skb->len >= 16) {
557 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
558 mac80211_hwsim_monitor_ack(hw, hdr->addr2);
559 }
560
561 txi = IEEE80211_SKB_CB(skb);
562
563 if (txi->control.vif)
564 hwsim_check_magic(txi->control.vif);
565 if (txi->control.sta)
566 hwsim_check_sta_magic(txi->control.sta);
567
568 ieee80211_tx_info_clear_status(txi);
569 if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
570 txi->flags |= IEEE80211_TX_STAT_ACK;
571 ieee80211_tx_status_irqsafe(hw, skb);
572 return NETDEV_TX_OK;
573 }
574
575
576 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
577 {
578 struct mac80211_hwsim_data *data = hw->priv;
579 wiphy_debug(hw->wiphy, "%s\n", __func__);
580 data->started = 1;
581 return 0;
582 }
583
584
585 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
586 {
587 struct mac80211_hwsim_data *data = hw->priv;
588 data->started = 0;
589 del_timer(&data->beacon_timer);
590 wiphy_debug(hw->wiphy, "%s\n", __func__);
591 }
592
593
594 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
595 struct ieee80211_vif *vif)
596 {
597 wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
598 __func__, ieee80211_vif_type_p2p(vif),
599 vif->addr);
600 hwsim_set_magic(vif);
601 return 0;
602 }
603
604
605 static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
606 struct ieee80211_vif *vif,
607 enum nl80211_iftype newtype,
608 bool newp2p)
609 {
610 newtype = ieee80211_iftype_p2p(newtype, newp2p);
611 wiphy_debug(hw->wiphy,
612 "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
613 __func__, ieee80211_vif_type_p2p(vif),
614 newtype, vif->addr);
615 hwsim_check_magic(vif);
616
617 return 0;
618 }
619
620 static void mac80211_hwsim_remove_interface(
621 struct ieee80211_hw *hw, struct ieee80211_vif *vif)
622 {
623 wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
624 __func__, ieee80211_vif_type_p2p(vif),
625 vif->addr);
626 hwsim_check_magic(vif);
627 hwsim_clear_magic(vif);
628 }
629
630
631 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
632 struct ieee80211_vif *vif)
633 {
634 struct ieee80211_hw *hw = arg;
635 struct sk_buff *skb;
636 struct ieee80211_tx_info *info;
637
638 hwsim_check_magic(vif);
639
640 if (vif->type != NL80211_IFTYPE_AP &&
641 vif->type != NL80211_IFTYPE_MESH_POINT &&
642 vif->type != NL80211_IFTYPE_ADHOC)
643 return;
644
645 skb = ieee80211_beacon_get(hw, vif);
646 if (skb == NULL)
647 return;
648 info = IEEE80211_SKB_CB(skb);
649
650 mac80211_hwsim_monitor_rx(hw, skb);
651 mac80211_hwsim_tx_frame(hw, skb);
652 dev_kfree_skb(skb);
653 }
654
655
656 static void mac80211_hwsim_beacon(unsigned long arg)
657 {
658 struct ieee80211_hw *hw = (struct ieee80211_hw *) arg;
659 struct mac80211_hwsim_data *data = hw->priv;
660
661 if (!data->started)
662 return;
663
664 ieee80211_iterate_active_interfaces_atomic(
665 hw, mac80211_hwsim_beacon_tx, hw);
666
667 data->beacon_timer.expires = jiffies + data->beacon_int;
668 add_timer(&data->beacon_timer);
669 }
670
671 static const char *hwsim_chantypes[] = {
672 [NL80211_CHAN_NO_HT] = "noht",
673 [NL80211_CHAN_HT20] = "ht20",
674 [NL80211_CHAN_HT40MINUS] = "ht40-",
675 [NL80211_CHAN_HT40PLUS] = "ht40+",
676 };
677
678 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
679 {
680 struct mac80211_hwsim_data *data = hw->priv;
681 struct ieee80211_conf *conf = &hw->conf;
682 static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
683 [IEEE80211_SMPS_AUTOMATIC] = "auto",
684 [IEEE80211_SMPS_OFF] = "off",
685 [IEEE80211_SMPS_STATIC] = "static",
686 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
687 };
688
689 wiphy_debug(hw->wiphy,
690 "%s (freq=%d/%s idle=%d ps=%d smps=%s)\n",
691 __func__,
692 conf->channel->center_freq,
693 hwsim_chantypes[conf->channel_type],
694 !!(conf->flags & IEEE80211_CONF_IDLE),
695 !!(conf->flags & IEEE80211_CONF_PS),
696 smps_modes[conf->smps_mode]);
697
698 data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
699
700 data->channel = conf->channel;
701 if (!data->started || !data->beacon_int)
702 del_timer(&data->beacon_timer);
703 else
704 mod_timer(&data->beacon_timer, jiffies + data->beacon_int);
705
706 return 0;
707 }
708
709
710 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
711 unsigned int changed_flags,
712 unsigned int *total_flags,u64 multicast)
713 {
714 struct mac80211_hwsim_data *data = hw->priv;
715
716 wiphy_debug(hw->wiphy, "%s\n", __func__);
717
718 data->rx_filter = 0;
719 if (*total_flags & FIF_PROMISC_IN_BSS)
720 data->rx_filter |= FIF_PROMISC_IN_BSS;
721 if (*total_flags & FIF_ALLMULTI)
722 data->rx_filter |= FIF_ALLMULTI;
723
724 *total_flags = data->rx_filter;
725 }
726
727 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
728 struct ieee80211_vif *vif,
729 struct ieee80211_bss_conf *info,
730 u32 changed)
731 {
732 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
733 struct mac80211_hwsim_data *data = hw->priv;
734
735 hwsim_check_magic(vif);
736
737 wiphy_debug(hw->wiphy, "%s(changed=0x%x)\n", __func__, changed);
738
739 if (changed & BSS_CHANGED_BSSID) {
740 wiphy_debug(hw->wiphy, "%s: BSSID changed: %pM\n",
741 __func__, info->bssid);
742 memcpy(vp->bssid, info->bssid, ETH_ALEN);
743 }
744
745 if (changed & BSS_CHANGED_ASSOC) {
746 wiphy_debug(hw->wiphy, " ASSOC: assoc=%d aid=%d\n",
747 info->assoc, info->aid);
748 vp->assoc = info->assoc;
749 vp->aid = info->aid;
750 }
751
752 if (changed & BSS_CHANGED_BEACON_INT) {
753 wiphy_debug(hw->wiphy, " BCNINT: %d\n", info->beacon_int);
754 data->beacon_int = 1024 * info->beacon_int / 1000 * HZ / 1000;
755 if (WARN_ON(!data->beacon_int))
756 data->beacon_int = 1;
757 if (data->started)
758 mod_timer(&data->beacon_timer,
759 jiffies + data->beacon_int);
760 }
761
762 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
763 wiphy_debug(hw->wiphy, " ERP_CTS_PROT: %d\n",
764 info->use_cts_prot);
765 }
766
767 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
768 wiphy_debug(hw->wiphy, " ERP_PREAMBLE: %d\n",
769 info->use_short_preamble);
770 }
771
772 if (changed & BSS_CHANGED_ERP_SLOT) {
773 wiphy_debug(hw->wiphy, " ERP_SLOT: %d\n", info->use_short_slot);
774 }
775
776 if (changed & BSS_CHANGED_HT) {
777 wiphy_debug(hw->wiphy, " HT: op_mode=0x%x, chantype=%s\n",
778 info->ht_operation_mode,
779 hwsim_chantypes[info->channel_type]);
780 }
781
782 if (changed & BSS_CHANGED_BASIC_RATES) {
783 wiphy_debug(hw->wiphy, " BASIC_RATES: 0x%llx\n",
784 (unsigned long long) info->basic_rates);
785 }
786 }
787
788 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
789 struct ieee80211_vif *vif,
790 struct ieee80211_sta *sta)
791 {
792 hwsim_check_magic(vif);
793 hwsim_set_sta_magic(sta);
794
795 return 0;
796 }
797
798 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
799 struct ieee80211_vif *vif,
800 struct ieee80211_sta *sta)
801 {
802 hwsim_check_magic(vif);
803 hwsim_clear_sta_magic(sta);
804
805 return 0;
806 }
807
808 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
809 struct ieee80211_vif *vif,
810 enum sta_notify_cmd cmd,
811 struct ieee80211_sta *sta)
812 {
813 hwsim_check_magic(vif);
814
815 switch (cmd) {
816 case STA_NOTIFY_SLEEP:
817 case STA_NOTIFY_AWAKE:
818 /* TODO: make good use of these flags */
819 break;
820 default:
821 WARN(1, "Invalid sta notify: %d\n", cmd);
822 break;
823 }
824 }
825
826 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
827 struct ieee80211_sta *sta,
828 bool set)
829 {
830 hwsim_check_sta_magic(sta);
831 return 0;
832 }
833
834 static int mac80211_hwsim_conf_tx(
835 struct ieee80211_hw *hw, u16 queue,
836 const struct ieee80211_tx_queue_params *params)
837 {
838 wiphy_debug(hw->wiphy,
839 "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
840 __func__, queue,
841 params->txop, params->cw_min,
842 params->cw_max, params->aifs);
843 return 0;
844 }
845
846 static int mac80211_hwsim_get_survey(
847 struct ieee80211_hw *hw, int idx,
848 struct survey_info *survey)
849 {
850 struct ieee80211_conf *conf = &hw->conf;
851
852 wiphy_debug(hw->wiphy, "%s (idx=%d)\n", __func__, idx);
853
854 if (idx != 0)
855 return -ENOENT;
856
857 /* Current channel */
858 survey->channel = conf->channel;
859
860 /*
861 * Magically conjured noise level --- this is only ok for simulated hardware.
862 *
863 * A real driver which cannot determine the real channel noise MUST NOT
864 * report any noise, especially not a magically conjured one :-)
865 */
866 survey->filled = SURVEY_INFO_NOISE_DBM;
867 survey->noise = -92;
868
869 return 0;
870 }
871
872 #ifdef CONFIG_NL80211_TESTMODE
873 /*
874 * This section contains example code for using netlink
875 * attributes with the testmode command in nl80211.
876 */
877
878 /* These enums need to be kept in sync with userspace */
879 enum hwsim_testmode_attr {
880 __HWSIM_TM_ATTR_INVALID = 0,
881 HWSIM_TM_ATTR_CMD = 1,
882 HWSIM_TM_ATTR_PS = 2,
883
884 /* keep last */
885 __HWSIM_TM_ATTR_AFTER_LAST,
886 HWSIM_TM_ATTR_MAX = __HWSIM_TM_ATTR_AFTER_LAST - 1
887 };
888
889 enum hwsim_testmode_cmd {
890 HWSIM_TM_CMD_SET_PS = 0,
891 HWSIM_TM_CMD_GET_PS = 1,
892 };
893
894 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
895 [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
896 [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
897 };
898
899 static int hwsim_fops_ps_write(void *dat, u64 val);
900
901 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
902 void *data, int len)
903 {
904 struct mac80211_hwsim_data *hwsim = hw->priv;
905 struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
906 struct sk_buff *skb;
907 int err, ps;
908
909 err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
910 hwsim_testmode_policy);
911 if (err)
912 return err;
913
914 if (!tb[HWSIM_TM_ATTR_CMD])
915 return -EINVAL;
916
917 switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
918 case HWSIM_TM_CMD_SET_PS:
919 if (!tb[HWSIM_TM_ATTR_PS])
920 return -EINVAL;
921 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
922 return hwsim_fops_ps_write(hwsim, ps);
923 case HWSIM_TM_CMD_GET_PS:
924 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
925 nla_total_size(sizeof(u32)));
926 if (!skb)
927 return -ENOMEM;
928 NLA_PUT_U32(skb, HWSIM_TM_ATTR_PS, hwsim->ps);
929 return cfg80211_testmode_reply(skb);
930 default:
931 return -EOPNOTSUPP;
932 }
933
934 nla_put_failure:
935 kfree_skb(skb);
936 return -ENOBUFS;
937 }
938 #endif
939
940 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
941 struct ieee80211_vif *vif,
942 enum ieee80211_ampdu_mlme_action action,
943 struct ieee80211_sta *sta, u16 tid, u16 *ssn)
944 {
945 switch (action) {
946 case IEEE80211_AMPDU_TX_START:
947 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
948 break;
949 case IEEE80211_AMPDU_TX_STOP:
950 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
951 break;
952 case IEEE80211_AMPDU_TX_OPERATIONAL:
953 break;
954 case IEEE80211_AMPDU_RX_START:
955 case IEEE80211_AMPDU_RX_STOP:
956 break;
957 default:
958 return -EOPNOTSUPP;
959 }
960
961 return 0;
962 }
963
964 static void mac80211_hwsim_flush(struct ieee80211_hw *hw, bool drop)
965 {
966 /*
967 * In this special case, there's nothing we need to
968 * do because hwsim does transmission synchronously.
969 * In the future, when it does transmissions via
970 * userspace, we may need to do something.
971 */
972 }
973
974 struct hw_scan_done {
975 struct delayed_work w;
976 struct ieee80211_hw *hw;
977 };
978
979 static void hw_scan_done(struct work_struct *work)
980 {
981 struct hw_scan_done *hsd =
982 container_of(work, struct hw_scan_done, w.work);
983
984 ieee80211_scan_completed(hsd->hw, false);
985 kfree(hsd);
986 }
987
988 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
989 struct ieee80211_vif *vif,
990 struct cfg80211_scan_request *req)
991 {
992 struct hw_scan_done *hsd = kzalloc(sizeof(*hsd), GFP_KERNEL);
993 int i;
994
995 if (!hsd)
996 return -ENOMEM;
997
998 hsd->hw = hw;
999 INIT_DELAYED_WORK(&hsd->w, hw_scan_done);
1000
1001 printk(KERN_DEBUG "hwsim hw_scan request\n");
1002 for (i = 0; i < req->n_channels; i++)
1003 printk(KERN_DEBUG "hwsim hw_scan freq %d\n",
1004 req->channels[i]->center_freq);
1005
1006 ieee80211_queue_delayed_work(hw, &hsd->w, 2 * HZ);
1007
1008 return 0;
1009 }
1010
1011 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw)
1012 {
1013 struct mac80211_hwsim_data *hwsim = hw->priv;
1014
1015 mutex_lock(&hwsim->mutex);
1016
1017 if (hwsim->scanning) {
1018 printk(KERN_DEBUG "two hwsim sw_scans detected!\n");
1019 goto out;
1020 }
1021
1022 printk(KERN_DEBUG "hwsim sw_scan request, prepping stuff\n");
1023 hwsim->scanning = true;
1024
1025 out:
1026 mutex_unlock(&hwsim->mutex);
1027 }
1028
1029 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw)
1030 {
1031 struct mac80211_hwsim_data *hwsim = hw->priv;
1032
1033 mutex_lock(&hwsim->mutex);
1034
1035 printk(KERN_DEBUG "hwsim sw_scan_complete\n");
1036 hwsim->scanning = false;
1037
1038 mutex_unlock(&hwsim->mutex);
1039 }
1040
1041 static struct ieee80211_ops mac80211_hwsim_ops =
1042 {
1043 .tx = mac80211_hwsim_tx,
1044 .start = mac80211_hwsim_start,
1045 .stop = mac80211_hwsim_stop,
1046 .add_interface = mac80211_hwsim_add_interface,
1047 .change_interface = mac80211_hwsim_change_interface,
1048 .remove_interface = mac80211_hwsim_remove_interface,
1049 .config = mac80211_hwsim_config,
1050 .configure_filter = mac80211_hwsim_configure_filter,
1051 .bss_info_changed = mac80211_hwsim_bss_info_changed,
1052 .sta_add = mac80211_hwsim_sta_add,
1053 .sta_remove = mac80211_hwsim_sta_remove,
1054 .sta_notify = mac80211_hwsim_sta_notify,
1055 .set_tim = mac80211_hwsim_set_tim,
1056 .conf_tx = mac80211_hwsim_conf_tx,
1057 .get_survey = mac80211_hwsim_get_survey,
1058 CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)
1059 .ampdu_action = mac80211_hwsim_ampdu_action,
1060 .sw_scan_start = mac80211_hwsim_sw_scan,
1061 .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
1062 .flush = mac80211_hwsim_flush,
1063 };
1064
1065
1066 static void mac80211_hwsim_free(void)
1067 {
1068 struct list_head tmplist, *i, *tmp;
1069 struct mac80211_hwsim_data *data, *tmpdata;
1070
1071 INIT_LIST_HEAD(&tmplist);
1072
1073 spin_lock_bh(&hwsim_radio_lock);
1074 list_for_each_safe(i, tmp, &hwsim_radios)
1075 list_move(i, &tmplist);
1076 spin_unlock_bh(&hwsim_radio_lock);
1077
1078 list_for_each_entry_safe(data, tmpdata, &tmplist, list) {
1079 debugfs_remove(data->debugfs_group);
1080 debugfs_remove(data->debugfs_ps);
1081 debugfs_remove(data->debugfs);
1082 ieee80211_unregister_hw(data->hw);
1083 device_unregister(data->dev);
1084 ieee80211_free_hw(data->hw);
1085 }
1086 class_destroy(hwsim_class);
1087 }
1088
1089
1090 static struct device_driver mac80211_hwsim_driver = {
1091 .name = "mac80211_hwsim"
1092 };
1093
1094 static const struct net_device_ops hwsim_netdev_ops = {
1095 .ndo_start_xmit = hwsim_mon_xmit,
1096 .ndo_change_mtu = eth_change_mtu,
1097 .ndo_set_mac_address = eth_mac_addr,
1098 .ndo_validate_addr = eth_validate_addr,
1099 };
1100
1101 static void hwsim_mon_setup(struct net_device *dev)
1102 {
1103 dev->netdev_ops = &hwsim_netdev_ops;
1104 dev->destructor = free_netdev;
1105 ether_setup(dev);
1106 dev->tx_queue_len = 0;
1107 dev->type = ARPHRD_IEEE80211_RADIOTAP;
1108 memset(dev->dev_addr, 0, ETH_ALEN);
1109 dev->dev_addr[0] = 0x12;
1110 }
1111
1112
1113 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
1114 {
1115 struct mac80211_hwsim_data *data = dat;
1116 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1117 struct sk_buff *skb;
1118 struct ieee80211_pspoll *pspoll;
1119
1120 if (!vp->assoc)
1121 return;
1122
1123 wiphy_debug(data->hw->wiphy,
1124 "%s: send PS-Poll to %pM for aid %d\n",
1125 __func__, vp->bssid, vp->aid);
1126
1127 skb = dev_alloc_skb(sizeof(*pspoll));
1128 if (!skb)
1129 return;
1130 pspoll = (void *) skb_put(skb, sizeof(*pspoll));
1131 pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
1132 IEEE80211_STYPE_PSPOLL |
1133 IEEE80211_FCTL_PM);
1134 pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
1135 memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
1136 memcpy(pspoll->ta, mac, ETH_ALEN);
1137 if (!mac80211_hwsim_tx_frame(data->hw, skb))
1138 printk(KERN_DEBUG "%s: PS-Poll frame not ack'ed\n", __func__);
1139 dev_kfree_skb(skb);
1140 }
1141
1142
1143 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
1144 struct ieee80211_vif *vif, int ps)
1145 {
1146 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1147 struct sk_buff *skb;
1148 struct ieee80211_hdr *hdr;
1149
1150 if (!vp->assoc)
1151 return;
1152
1153 wiphy_debug(data->hw->wiphy,
1154 "%s: send data::nullfunc to %pM ps=%d\n",
1155 __func__, vp->bssid, ps);
1156
1157 skb = dev_alloc_skb(sizeof(*hdr));
1158 if (!skb)
1159 return;
1160 hdr = (void *) skb_put(skb, sizeof(*hdr) - ETH_ALEN);
1161 hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
1162 IEEE80211_STYPE_NULLFUNC |
1163 (ps ? IEEE80211_FCTL_PM : 0));
1164 hdr->duration_id = cpu_to_le16(0);
1165 memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
1166 memcpy(hdr->addr2, mac, ETH_ALEN);
1167 memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
1168 if (!mac80211_hwsim_tx_frame(data->hw, skb))
1169 printk(KERN_DEBUG "%s: nullfunc frame not ack'ed\n", __func__);
1170 dev_kfree_skb(skb);
1171 }
1172
1173
1174 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
1175 struct ieee80211_vif *vif)
1176 {
1177 struct mac80211_hwsim_data *data = dat;
1178 hwsim_send_nullfunc(data, mac, vif, 1);
1179 }
1180
1181
1182 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
1183 struct ieee80211_vif *vif)
1184 {
1185 struct mac80211_hwsim_data *data = dat;
1186 hwsim_send_nullfunc(data, mac, vif, 0);
1187 }
1188
1189
1190 static int hwsim_fops_ps_read(void *dat, u64 *val)
1191 {
1192 struct mac80211_hwsim_data *data = dat;
1193 *val = data->ps;
1194 return 0;
1195 }
1196
1197 static int hwsim_fops_ps_write(void *dat, u64 val)
1198 {
1199 struct mac80211_hwsim_data *data = dat;
1200 enum ps_mode old_ps;
1201
1202 if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
1203 val != PS_MANUAL_POLL)
1204 return -EINVAL;
1205
1206 old_ps = data->ps;
1207 data->ps = val;
1208
1209 if (val == PS_MANUAL_POLL) {
1210 ieee80211_iterate_active_interfaces(data->hw,
1211 hwsim_send_ps_poll, data);
1212 data->ps_poll_pending = true;
1213 } else if (old_ps == PS_DISABLED && val != PS_DISABLED) {
1214 ieee80211_iterate_active_interfaces(data->hw,
1215 hwsim_send_nullfunc_ps,
1216 data);
1217 } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
1218 ieee80211_iterate_active_interfaces(data->hw,
1219 hwsim_send_nullfunc_no_ps,
1220 data);
1221 }
1222
1223 return 0;
1224 }
1225
1226 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
1227 "%llu\n");
1228
1229
1230 static int hwsim_fops_group_read(void *dat, u64 *val)
1231 {
1232 struct mac80211_hwsim_data *data = dat;
1233 *val = data->group;
1234 return 0;
1235 }
1236
1237 static int hwsim_fops_group_write(void *dat, u64 val)
1238 {
1239 struct mac80211_hwsim_data *data = dat;
1240 data->group = val;
1241 return 0;
1242 }
1243
1244 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
1245 hwsim_fops_group_read, hwsim_fops_group_write,
1246 "%llx\n");
1247
1248 static int __init init_mac80211_hwsim(void)
1249 {
1250 int i, err = 0;
1251 u8 addr[ETH_ALEN];
1252 struct mac80211_hwsim_data *data;
1253 struct ieee80211_hw *hw;
1254 enum ieee80211_band band;
1255
1256 if (radios < 1 || radios > 100)
1257 return -EINVAL;
1258
1259 if (fake_hw_scan) {
1260 mac80211_hwsim_ops.hw_scan = mac80211_hwsim_hw_scan;
1261 mac80211_hwsim_ops.sw_scan_start = NULL;
1262 mac80211_hwsim_ops.sw_scan_complete = NULL;
1263 }
1264
1265 spin_lock_init(&hwsim_radio_lock);
1266 INIT_LIST_HEAD(&hwsim_radios);
1267
1268 hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
1269 if (IS_ERR(hwsim_class))
1270 return PTR_ERR(hwsim_class);
1271
1272 memset(addr, 0, ETH_ALEN);
1273 addr[0] = 0x02;
1274
1275 for (i = 0; i < radios; i++) {
1276 printk(KERN_DEBUG "mac80211_hwsim: Initializing radio %d\n",
1277 i);
1278 hw = ieee80211_alloc_hw(sizeof(*data), &mac80211_hwsim_ops);
1279 if (!hw) {
1280 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw "
1281 "failed\n");
1282 err = -ENOMEM;
1283 goto failed;
1284 }
1285 data = hw->priv;
1286 data->hw = hw;
1287
1288 data->dev = device_create(hwsim_class, NULL, 0, hw,
1289 "hwsim%d", i);
1290 if (IS_ERR(data->dev)) {
1291 printk(KERN_DEBUG
1292 "mac80211_hwsim: device_create "
1293 "failed (%ld)\n", PTR_ERR(data->dev));
1294 err = -ENOMEM;
1295 goto failed_drvdata;
1296 }
1297 data->dev->driver = &mac80211_hwsim_driver;
1298
1299 SET_IEEE80211_DEV(hw, data->dev);
1300 addr[3] = i >> 8;
1301 addr[4] = i;
1302 memcpy(data->addresses[0].addr, addr, ETH_ALEN);
1303 memcpy(data->addresses[1].addr, addr, ETH_ALEN);
1304 data->addresses[1].addr[0] |= 0x40;
1305 hw->wiphy->n_addresses = 2;
1306 hw->wiphy->addresses = data->addresses;
1307
1308 if (fake_hw_scan) {
1309 hw->wiphy->max_scan_ssids = 255;
1310 hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
1311 }
1312
1313 hw->channel_change_time = 1;
1314 hw->queues = 4;
1315 hw->wiphy->interface_modes =
1316 BIT(NL80211_IFTYPE_STATION) |
1317 BIT(NL80211_IFTYPE_AP) |
1318 BIT(NL80211_IFTYPE_P2P_CLIENT) |
1319 BIT(NL80211_IFTYPE_P2P_GO) |
1320 BIT(NL80211_IFTYPE_ADHOC) |
1321 BIT(NL80211_IFTYPE_MESH_POINT);
1322
1323 hw->flags = IEEE80211_HW_MFP_CAPABLE |
1324 IEEE80211_HW_SIGNAL_DBM |
1325 IEEE80211_HW_SUPPORTS_STATIC_SMPS |
1326 IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
1327 IEEE80211_HW_AMPDU_AGGREGATION;
1328
1329 /* ask mac80211 to reserve space for magic */
1330 hw->vif_data_size = sizeof(struct hwsim_vif_priv);
1331 hw->sta_data_size = sizeof(struct hwsim_sta_priv);
1332
1333 memcpy(data->channels_2ghz, hwsim_channels_2ghz,
1334 sizeof(hwsim_channels_2ghz));
1335 memcpy(data->channels_5ghz, hwsim_channels_5ghz,
1336 sizeof(hwsim_channels_5ghz));
1337 memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
1338
1339 for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) {
1340 struct ieee80211_supported_band *sband = &data->bands[band];
1341 switch (band) {
1342 case IEEE80211_BAND_2GHZ:
1343 sband->channels = data->channels_2ghz;
1344 sband->n_channels =
1345 ARRAY_SIZE(hwsim_channels_2ghz);
1346 sband->bitrates = data->rates;
1347 sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
1348 break;
1349 case IEEE80211_BAND_5GHZ:
1350 sband->channels = data->channels_5ghz;
1351 sband->n_channels =
1352 ARRAY_SIZE(hwsim_channels_5ghz);
1353 sband->bitrates = data->rates + 4;
1354 sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
1355 break;
1356 default:
1357 break;
1358 }
1359
1360 sband->ht_cap.ht_supported = true;
1361 sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
1362 IEEE80211_HT_CAP_GRN_FLD |
1363 IEEE80211_HT_CAP_SGI_40 |
1364 IEEE80211_HT_CAP_DSSSCCK40;
1365 sband->ht_cap.ampdu_factor = 0x3;
1366 sband->ht_cap.ampdu_density = 0x6;
1367 memset(&sband->ht_cap.mcs, 0,
1368 sizeof(sband->ht_cap.mcs));
1369 sband->ht_cap.mcs.rx_mask[0] = 0xff;
1370 sband->ht_cap.mcs.rx_mask[1] = 0xff;
1371 sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
1372
1373 hw->wiphy->bands[band] = sband;
1374 }
1375 /* By default all radios are belonging to the first group */
1376 data->group = 1;
1377 mutex_init(&data->mutex);
1378
1379 /* Work to be done prior to ieee80211_register_hw() */
1380 switch (regtest) {
1381 case HWSIM_REGTEST_DISABLED:
1382 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
1383 case HWSIM_REGTEST_DRIVER_REG_ALL:
1384 case HWSIM_REGTEST_DIFF_COUNTRY:
1385 /*
1386 * Nothing to be done for driver regulatory domain
1387 * hints prior to ieee80211_register_hw()
1388 */
1389 break;
1390 case HWSIM_REGTEST_WORLD_ROAM:
1391 if (i == 0) {
1392 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1393 wiphy_apply_custom_regulatory(hw->wiphy,
1394 &hwsim_world_regdom_custom_01);
1395 }
1396 break;
1397 case HWSIM_REGTEST_CUSTOM_WORLD:
1398 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1399 wiphy_apply_custom_regulatory(hw->wiphy,
1400 &hwsim_world_regdom_custom_01);
1401 break;
1402 case HWSIM_REGTEST_CUSTOM_WORLD_2:
1403 if (i == 0) {
1404 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1405 wiphy_apply_custom_regulatory(hw->wiphy,
1406 &hwsim_world_regdom_custom_01);
1407 } else if (i == 1) {
1408 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1409 wiphy_apply_custom_regulatory(hw->wiphy,
1410 &hwsim_world_regdom_custom_02);
1411 }
1412 break;
1413 case HWSIM_REGTEST_STRICT_ALL:
1414 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1415 break;
1416 case HWSIM_REGTEST_STRICT_FOLLOW:
1417 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
1418 if (i == 0)
1419 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1420 break;
1421 case HWSIM_REGTEST_ALL:
1422 if (i == 0) {
1423 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1424 wiphy_apply_custom_regulatory(hw->wiphy,
1425 &hwsim_world_regdom_custom_01);
1426 } else if (i == 1) {
1427 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1428 wiphy_apply_custom_regulatory(hw->wiphy,
1429 &hwsim_world_regdom_custom_02);
1430 } else if (i == 4)
1431 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1432 break;
1433 default:
1434 break;
1435 }
1436
1437 /* give the regulatory workqueue a chance to run */
1438 if (regtest)
1439 schedule_timeout_interruptible(1);
1440 err = ieee80211_register_hw(hw);
1441 if (err < 0) {
1442 printk(KERN_DEBUG "mac80211_hwsim: "
1443 "ieee80211_register_hw failed (%d)\n", err);
1444 goto failed_hw;
1445 }
1446
1447 /* Work to be done after to ieee80211_register_hw() */
1448 switch (regtest) {
1449 case HWSIM_REGTEST_WORLD_ROAM:
1450 case HWSIM_REGTEST_DISABLED:
1451 break;
1452 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
1453 if (!i)
1454 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1455 break;
1456 case HWSIM_REGTEST_DRIVER_REG_ALL:
1457 case HWSIM_REGTEST_STRICT_ALL:
1458 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1459 break;
1460 case HWSIM_REGTEST_DIFF_COUNTRY:
1461 if (i < ARRAY_SIZE(hwsim_alpha2s))
1462 regulatory_hint(hw->wiphy, hwsim_alpha2s[i]);
1463 break;
1464 case HWSIM_REGTEST_CUSTOM_WORLD:
1465 case HWSIM_REGTEST_CUSTOM_WORLD_2:
1466 /*
1467 * Nothing to be done for custom world regulatory
1468 * domains after to ieee80211_register_hw
1469 */
1470 break;
1471 case HWSIM_REGTEST_STRICT_FOLLOW:
1472 if (i == 0)
1473 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1474 break;
1475 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
1476 if (i == 0)
1477 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1478 else if (i == 1)
1479 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
1480 break;
1481 case HWSIM_REGTEST_ALL:
1482 if (i == 2)
1483 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1484 else if (i == 3)
1485 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
1486 else if (i == 4)
1487 regulatory_hint(hw->wiphy, hwsim_alpha2s[2]);
1488 break;
1489 default:
1490 break;
1491 }
1492
1493 wiphy_debug(hw->wiphy, "hwaddr %pm registered\n",
1494 hw->wiphy->perm_addr);
1495
1496 data->debugfs = debugfs_create_dir("hwsim",
1497 hw->wiphy->debugfsdir);
1498 data->debugfs_ps = debugfs_create_file("ps", 0666,
1499 data->debugfs, data,
1500 &hwsim_fops_ps);
1501 data->debugfs_group = debugfs_create_file("group", 0666,
1502 data->debugfs, data,
1503 &hwsim_fops_group);
1504
1505 setup_timer(&data->beacon_timer, mac80211_hwsim_beacon,
1506 (unsigned long) hw);
1507
1508 list_add_tail(&data->list, &hwsim_radios);
1509 }
1510
1511 hwsim_mon = alloc_netdev(0, "hwsim%d", hwsim_mon_setup);
1512 if (hwsim_mon == NULL)
1513 goto failed;
1514
1515 rtnl_lock();
1516
1517 err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
1518 if (err < 0)
1519 goto failed_mon;
1520
1521
1522 err = register_netdevice(hwsim_mon);
1523 if (err < 0)
1524 goto failed_mon;
1525
1526 rtnl_unlock();
1527
1528 return 0;
1529
1530 failed_mon:
1531 rtnl_unlock();
1532 free_netdev(hwsim_mon);
1533 mac80211_hwsim_free();
1534 return err;
1535
1536 failed_hw:
1537 device_unregister(data->dev);
1538 failed_drvdata:
1539 ieee80211_free_hw(hw);
1540 failed:
1541 mac80211_hwsim_free();
1542 return err;
1543 }
1544
1545
1546 static void __exit exit_mac80211_hwsim(void)
1547 {
1548 printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
1549
1550 mac80211_hwsim_free();
1551 unregister_netdev(hwsim_mon);
1552 }
1553
1554
1555 module_init(init_mac80211_hwsim);
1556 module_exit(exit_mac80211_hwsim);
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree