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mac80211-hwsim: allow configuring IBSS
[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 * - 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__, vif->type, vif->addr);
599 hwsim_set_magic(vif);
600 return 0;
601 }
602
603
604 static void mac80211_hwsim_remove_interface(
605 struct ieee80211_hw *hw, struct ieee80211_vif *vif)
606 {
607 wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
608 __func__, vif->type, vif->addr);
609 hwsim_check_magic(vif);
610 hwsim_clear_magic(vif);
611 }
612
613
614 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
615 struct ieee80211_vif *vif)
616 {
617 struct ieee80211_hw *hw = arg;
618 struct sk_buff *skb;
619 struct ieee80211_tx_info *info;
620
621 hwsim_check_magic(vif);
622
623 if (vif->type != NL80211_IFTYPE_AP &&
624 vif->type != NL80211_IFTYPE_MESH_POINT &&
625 vif->type != NL80211_IFTYPE_ADHOC)
626 return;
627
628 skb = ieee80211_beacon_get(hw, vif);
629 if (skb == NULL)
630 return;
631 info = IEEE80211_SKB_CB(skb);
632
633 mac80211_hwsim_monitor_rx(hw, skb);
634 mac80211_hwsim_tx_frame(hw, skb);
635 dev_kfree_skb(skb);
636 }
637
638
639 static void mac80211_hwsim_beacon(unsigned long arg)
640 {
641 struct ieee80211_hw *hw = (struct ieee80211_hw *) arg;
642 struct mac80211_hwsim_data *data = hw->priv;
643
644 if (!data->started)
645 return;
646
647 ieee80211_iterate_active_interfaces_atomic(
648 hw, mac80211_hwsim_beacon_tx, hw);
649
650 data->beacon_timer.expires = jiffies + data->beacon_int;
651 add_timer(&data->beacon_timer);
652 }
653
654 static const char *hwsim_chantypes[] = {
655 [NL80211_CHAN_NO_HT] = "noht",
656 [NL80211_CHAN_HT20] = "ht20",
657 [NL80211_CHAN_HT40MINUS] = "ht40-",
658 [NL80211_CHAN_HT40PLUS] = "ht40+",
659 };
660
661 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
662 {
663 struct mac80211_hwsim_data *data = hw->priv;
664 struct ieee80211_conf *conf = &hw->conf;
665 static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
666 [IEEE80211_SMPS_AUTOMATIC] = "auto",
667 [IEEE80211_SMPS_OFF] = "off",
668 [IEEE80211_SMPS_STATIC] = "static",
669 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
670 };
671
672 wiphy_debug(hw->wiphy,
673 "%s (freq=%d/%s idle=%d ps=%d smps=%s)\n",
674 __func__,
675 conf->channel->center_freq,
676 hwsim_chantypes[conf->channel_type],
677 !!(conf->flags & IEEE80211_CONF_IDLE),
678 !!(conf->flags & IEEE80211_CONF_PS),
679 smps_modes[conf->smps_mode]);
680
681 data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
682
683 data->channel = conf->channel;
684 if (!data->started || !data->beacon_int)
685 del_timer(&data->beacon_timer);
686 else
687 mod_timer(&data->beacon_timer, jiffies + data->beacon_int);
688
689 return 0;
690 }
691
692
693 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
694 unsigned int changed_flags,
695 unsigned int *total_flags,u64 multicast)
696 {
697 struct mac80211_hwsim_data *data = hw->priv;
698
699 wiphy_debug(hw->wiphy, "%s\n", __func__);
700
701 data->rx_filter = 0;
702 if (*total_flags & FIF_PROMISC_IN_BSS)
703 data->rx_filter |= FIF_PROMISC_IN_BSS;
704 if (*total_flags & FIF_ALLMULTI)
705 data->rx_filter |= FIF_ALLMULTI;
706
707 *total_flags = data->rx_filter;
708 }
709
710 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
711 struct ieee80211_vif *vif,
712 struct ieee80211_bss_conf *info,
713 u32 changed)
714 {
715 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
716 struct mac80211_hwsim_data *data = hw->priv;
717
718 hwsim_check_magic(vif);
719
720 wiphy_debug(hw->wiphy, "%s(changed=0x%x)\n", __func__, changed);
721
722 if (changed & BSS_CHANGED_BSSID) {
723 wiphy_debug(hw->wiphy, "%s: BSSID changed: %pM\n",
724 __func__, info->bssid);
725 memcpy(vp->bssid, info->bssid, ETH_ALEN);
726 }
727
728 if (changed & BSS_CHANGED_ASSOC) {
729 wiphy_debug(hw->wiphy, " ASSOC: assoc=%d aid=%d\n",
730 info->assoc, info->aid);
731 vp->assoc = info->assoc;
732 vp->aid = info->aid;
733 }
734
735 if (changed & BSS_CHANGED_BEACON_INT) {
736 wiphy_debug(hw->wiphy, " BCNINT: %d\n", info->beacon_int);
737 data->beacon_int = 1024 * info->beacon_int / 1000 * HZ / 1000;
738 if (WARN_ON(!data->beacon_int))
739 data->beacon_int = 1;
740 if (data->started)
741 mod_timer(&data->beacon_timer,
742 jiffies + data->beacon_int);
743 }
744
745 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
746 wiphy_debug(hw->wiphy, " ERP_CTS_PROT: %d\n",
747 info->use_cts_prot);
748 }
749
750 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
751 wiphy_debug(hw->wiphy, " ERP_PREAMBLE: %d\n",
752 info->use_short_preamble);
753 }
754
755 if (changed & BSS_CHANGED_ERP_SLOT) {
756 wiphy_debug(hw->wiphy, " ERP_SLOT: %d\n", info->use_short_slot);
757 }
758
759 if (changed & BSS_CHANGED_HT) {
760 wiphy_debug(hw->wiphy, " HT: op_mode=0x%x, chantype=%s\n",
761 info->ht_operation_mode,
762 hwsim_chantypes[info->channel_type]);
763 }
764
765 if (changed & BSS_CHANGED_BASIC_RATES) {
766 wiphy_debug(hw->wiphy, " BASIC_RATES: 0x%llx\n",
767 (unsigned long long) info->basic_rates);
768 }
769 }
770
771 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
772 struct ieee80211_vif *vif,
773 struct ieee80211_sta *sta)
774 {
775 hwsim_check_magic(vif);
776 hwsim_set_sta_magic(sta);
777
778 return 0;
779 }
780
781 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
782 struct ieee80211_vif *vif,
783 struct ieee80211_sta *sta)
784 {
785 hwsim_check_magic(vif);
786 hwsim_clear_sta_magic(sta);
787
788 return 0;
789 }
790
791 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
792 struct ieee80211_vif *vif,
793 enum sta_notify_cmd cmd,
794 struct ieee80211_sta *sta)
795 {
796 hwsim_check_magic(vif);
797
798 switch (cmd) {
799 case STA_NOTIFY_SLEEP:
800 case STA_NOTIFY_AWAKE:
801 /* TODO: make good use of these flags */
802 break;
803 default:
804 WARN(1, "Invalid sta notify: %d\n", cmd);
805 break;
806 }
807 }
808
809 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
810 struct ieee80211_sta *sta,
811 bool set)
812 {
813 hwsim_check_sta_magic(sta);
814 return 0;
815 }
816
817 static int mac80211_hwsim_conf_tx(
818 struct ieee80211_hw *hw, u16 queue,
819 const struct ieee80211_tx_queue_params *params)
820 {
821 wiphy_debug(hw->wiphy,
822 "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
823 __func__, queue,
824 params->txop, params->cw_min,
825 params->cw_max, params->aifs);
826 return 0;
827 }
828
829 static int mac80211_hwsim_get_survey(
830 struct ieee80211_hw *hw, int idx,
831 struct survey_info *survey)
832 {
833 struct ieee80211_conf *conf = &hw->conf;
834
835 wiphy_debug(hw->wiphy, "%s (idx=%d)\n", __func__, idx);
836
837 if (idx != 0)
838 return -ENOENT;
839
840 /* Current channel */
841 survey->channel = conf->channel;
842
843 /*
844 * Magically conjured noise level --- this is only ok for simulated hardware.
845 *
846 * A real driver which cannot determine the real channel noise MUST NOT
847 * report any noise, especially not a magically conjured one :-)
848 */
849 survey->filled = SURVEY_INFO_NOISE_DBM;
850 survey->noise = -92;
851
852 return 0;
853 }
854
855 #ifdef CONFIG_NL80211_TESTMODE
856 /*
857 * This section contains example code for using netlink
858 * attributes with the testmode command in nl80211.
859 */
860
861 /* These enums need to be kept in sync with userspace */
862 enum hwsim_testmode_attr {
863 __HWSIM_TM_ATTR_INVALID = 0,
864 HWSIM_TM_ATTR_CMD = 1,
865 HWSIM_TM_ATTR_PS = 2,
866
867 /* keep last */
868 __HWSIM_TM_ATTR_AFTER_LAST,
869 HWSIM_TM_ATTR_MAX = __HWSIM_TM_ATTR_AFTER_LAST - 1
870 };
871
872 enum hwsim_testmode_cmd {
873 HWSIM_TM_CMD_SET_PS = 0,
874 HWSIM_TM_CMD_GET_PS = 1,
875 };
876
877 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
878 [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
879 [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
880 };
881
882 static int hwsim_fops_ps_write(void *dat, u64 val);
883
884 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
885 void *data, int len)
886 {
887 struct mac80211_hwsim_data *hwsim = hw->priv;
888 struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
889 struct sk_buff *skb;
890 int err, ps;
891
892 err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
893 hwsim_testmode_policy);
894 if (err)
895 return err;
896
897 if (!tb[HWSIM_TM_ATTR_CMD])
898 return -EINVAL;
899
900 switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
901 case HWSIM_TM_CMD_SET_PS:
902 if (!tb[HWSIM_TM_ATTR_PS])
903 return -EINVAL;
904 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
905 return hwsim_fops_ps_write(hwsim, ps);
906 case HWSIM_TM_CMD_GET_PS:
907 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
908 nla_total_size(sizeof(u32)));
909 if (!skb)
910 return -ENOMEM;
911 NLA_PUT_U32(skb, HWSIM_TM_ATTR_PS, hwsim->ps);
912 return cfg80211_testmode_reply(skb);
913 default:
914 return -EOPNOTSUPP;
915 }
916
917 nla_put_failure:
918 kfree_skb(skb);
919 return -ENOBUFS;
920 }
921 #endif
922
923 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
924 struct ieee80211_vif *vif,
925 enum ieee80211_ampdu_mlme_action action,
926 struct ieee80211_sta *sta, u16 tid, u16 *ssn)
927 {
928 switch (action) {
929 case IEEE80211_AMPDU_TX_START:
930 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
931 break;
932 case IEEE80211_AMPDU_TX_STOP:
933 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
934 break;
935 case IEEE80211_AMPDU_TX_OPERATIONAL:
936 break;
937 case IEEE80211_AMPDU_RX_START:
938 case IEEE80211_AMPDU_RX_STOP:
939 break;
940 default:
941 return -EOPNOTSUPP;
942 }
943
944 return 0;
945 }
946
947 static void mac80211_hwsim_flush(struct ieee80211_hw *hw, bool drop)
948 {
949 /*
950 * In this special case, there's nothing we need to
951 * do because hwsim does transmission synchronously.
952 * In the future, when it does transmissions via
953 * userspace, we may need to do something.
954 */
955 }
956
957 struct hw_scan_done {
958 struct delayed_work w;
959 struct ieee80211_hw *hw;
960 };
961
962 static void hw_scan_done(struct work_struct *work)
963 {
964 struct hw_scan_done *hsd =
965 container_of(work, struct hw_scan_done, w.work);
966
967 ieee80211_scan_completed(hsd->hw, false);
968 kfree(hsd);
969 }
970
971 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
972 struct ieee80211_vif *vif,
973 struct cfg80211_scan_request *req)
974 {
975 struct hw_scan_done *hsd = kzalloc(sizeof(*hsd), GFP_KERNEL);
976 int i;
977
978 if (!hsd)
979 return -ENOMEM;
980
981 hsd->hw = hw;
982 INIT_DELAYED_WORK(&hsd->w, hw_scan_done);
983
984 printk(KERN_DEBUG "hwsim hw_scan request\n");
985 for (i = 0; i < req->n_channels; i++)
986 printk(KERN_DEBUG "hwsim hw_scan freq %d\n",
987 req->channels[i]->center_freq);
988
989 ieee80211_queue_delayed_work(hw, &hsd->w, 2 * HZ);
990
991 return 0;
992 }
993
994 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw)
995 {
996 struct mac80211_hwsim_data *hwsim = hw->priv;
997
998 mutex_lock(&hwsim->mutex);
999
1000 if (hwsim->scanning) {
1001 printk(KERN_DEBUG "two hwsim sw_scans detected!\n");
1002 goto out;
1003 }
1004
1005 printk(KERN_DEBUG "hwsim sw_scan request, prepping stuff\n");
1006 hwsim->scanning = true;
1007
1008 out:
1009 mutex_unlock(&hwsim->mutex);
1010 }
1011
1012 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw)
1013 {
1014 struct mac80211_hwsim_data *hwsim = hw->priv;
1015
1016 mutex_lock(&hwsim->mutex);
1017
1018 printk(KERN_DEBUG "hwsim sw_scan_complete\n");
1019 hwsim->scanning = false;
1020
1021 mutex_unlock(&hwsim->mutex);
1022 }
1023
1024 static struct ieee80211_ops mac80211_hwsim_ops =
1025 {
1026 .tx = mac80211_hwsim_tx,
1027 .start = mac80211_hwsim_start,
1028 .stop = mac80211_hwsim_stop,
1029 .add_interface = mac80211_hwsim_add_interface,
1030 .remove_interface = mac80211_hwsim_remove_interface,
1031 .config = mac80211_hwsim_config,
1032 .configure_filter = mac80211_hwsim_configure_filter,
1033 .bss_info_changed = mac80211_hwsim_bss_info_changed,
1034 .sta_add = mac80211_hwsim_sta_add,
1035 .sta_remove = mac80211_hwsim_sta_remove,
1036 .sta_notify = mac80211_hwsim_sta_notify,
1037 .set_tim = mac80211_hwsim_set_tim,
1038 .conf_tx = mac80211_hwsim_conf_tx,
1039 .get_survey = mac80211_hwsim_get_survey,
1040 CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)
1041 .ampdu_action = mac80211_hwsim_ampdu_action,
1042 .sw_scan_start = mac80211_hwsim_sw_scan,
1043 .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
1044 .flush = mac80211_hwsim_flush,
1045 };
1046
1047
1048 static void mac80211_hwsim_free(void)
1049 {
1050 struct list_head tmplist, *i, *tmp;
1051 struct mac80211_hwsim_data *data, *tmpdata;
1052
1053 INIT_LIST_HEAD(&tmplist);
1054
1055 spin_lock_bh(&hwsim_radio_lock);
1056 list_for_each_safe(i, tmp, &hwsim_radios)
1057 list_move(i, &tmplist);
1058 spin_unlock_bh(&hwsim_radio_lock);
1059
1060 list_for_each_entry_safe(data, tmpdata, &tmplist, list) {
1061 debugfs_remove(data->debugfs_group);
1062 debugfs_remove(data->debugfs_ps);
1063 debugfs_remove(data->debugfs);
1064 ieee80211_unregister_hw(data->hw);
1065 device_unregister(data->dev);
1066 ieee80211_free_hw(data->hw);
1067 }
1068 class_destroy(hwsim_class);
1069 }
1070
1071
1072 static struct device_driver mac80211_hwsim_driver = {
1073 .name = "mac80211_hwsim"
1074 };
1075
1076 static const struct net_device_ops hwsim_netdev_ops = {
1077 .ndo_start_xmit = hwsim_mon_xmit,
1078 .ndo_change_mtu = eth_change_mtu,
1079 .ndo_set_mac_address = eth_mac_addr,
1080 .ndo_validate_addr = eth_validate_addr,
1081 };
1082
1083 static void hwsim_mon_setup(struct net_device *dev)
1084 {
1085 dev->netdev_ops = &hwsim_netdev_ops;
1086 dev->destructor = free_netdev;
1087 ether_setup(dev);
1088 dev->tx_queue_len = 0;
1089 dev->type = ARPHRD_IEEE80211_RADIOTAP;
1090 memset(dev->dev_addr, 0, ETH_ALEN);
1091 dev->dev_addr[0] = 0x12;
1092 }
1093
1094
1095 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
1096 {
1097 struct mac80211_hwsim_data *data = dat;
1098 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1099 struct sk_buff *skb;
1100 struct ieee80211_pspoll *pspoll;
1101
1102 if (!vp->assoc)
1103 return;
1104
1105 wiphy_debug(data->hw->wiphy,
1106 "%s: send PS-Poll to %pM for aid %d\n",
1107 __func__, vp->bssid, vp->aid);
1108
1109 skb = dev_alloc_skb(sizeof(*pspoll));
1110 if (!skb)
1111 return;
1112 pspoll = (void *) skb_put(skb, sizeof(*pspoll));
1113 pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
1114 IEEE80211_STYPE_PSPOLL |
1115 IEEE80211_FCTL_PM);
1116 pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
1117 memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
1118 memcpy(pspoll->ta, mac, ETH_ALEN);
1119 if (!mac80211_hwsim_tx_frame(data->hw, skb))
1120 printk(KERN_DEBUG "%s: PS-Poll frame not ack'ed\n", __func__);
1121 dev_kfree_skb(skb);
1122 }
1123
1124
1125 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
1126 struct ieee80211_vif *vif, int ps)
1127 {
1128 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1129 struct sk_buff *skb;
1130 struct ieee80211_hdr *hdr;
1131
1132 if (!vp->assoc)
1133 return;
1134
1135 wiphy_debug(data->hw->wiphy,
1136 "%s: send data::nullfunc to %pM ps=%d\n",
1137 __func__, vp->bssid, ps);
1138
1139 skb = dev_alloc_skb(sizeof(*hdr));
1140 if (!skb)
1141 return;
1142 hdr = (void *) skb_put(skb, sizeof(*hdr) - ETH_ALEN);
1143 hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
1144 IEEE80211_STYPE_NULLFUNC |
1145 (ps ? IEEE80211_FCTL_PM : 0));
1146 hdr->duration_id = cpu_to_le16(0);
1147 memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
1148 memcpy(hdr->addr2, mac, ETH_ALEN);
1149 memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
1150 if (!mac80211_hwsim_tx_frame(data->hw, skb))
1151 printk(KERN_DEBUG "%s: nullfunc frame not ack'ed\n", __func__);
1152 dev_kfree_skb(skb);
1153 }
1154
1155
1156 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
1157 struct ieee80211_vif *vif)
1158 {
1159 struct mac80211_hwsim_data *data = dat;
1160 hwsim_send_nullfunc(data, mac, vif, 1);
1161 }
1162
1163
1164 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
1165 struct ieee80211_vif *vif)
1166 {
1167 struct mac80211_hwsim_data *data = dat;
1168 hwsim_send_nullfunc(data, mac, vif, 0);
1169 }
1170
1171
1172 static int hwsim_fops_ps_read(void *dat, u64 *val)
1173 {
1174 struct mac80211_hwsim_data *data = dat;
1175 *val = data->ps;
1176 return 0;
1177 }
1178
1179 static int hwsim_fops_ps_write(void *dat, u64 val)
1180 {
1181 struct mac80211_hwsim_data *data = dat;
1182 enum ps_mode old_ps;
1183
1184 if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
1185 val != PS_MANUAL_POLL)
1186 return -EINVAL;
1187
1188 old_ps = data->ps;
1189 data->ps = val;
1190
1191 if (val == PS_MANUAL_POLL) {
1192 ieee80211_iterate_active_interfaces(data->hw,
1193 hwsim_send_ps_poll, data);
1194 data->ps_poll_pending = true;
1195 } else if (old_ps == PS_DISABLED && val != PS_DISABLED) {
1196 ieee80211_iterate_active_interfaces(data->hw,
1197 hwsim_send_nullfunc_ps,
1198 data);
1199 } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
1200 ieee80211_iterate_active_interfaces(data->hw,
1201 hwsim_send_nullfunc_no_ps,
1202 data);
1203 }
1204
1205 return 0;
1206 }
1207
1208 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
1209 "%llu\n");
1210
1211
1212 static int hwsim_fops_group_read(void *dat, u64 *val)
1213 {
1214 struct mac80211_hwsim_data *data = dat;
1215 *val = data->group;
1216 return 0;
1217 }
1218
1219 static int hwsim_fops_group_write(void *dat, u64 val)
1220 {
1221 struct mac80211_hwsim_data *data = dat;
1222 data->group = val;
1223 return 0;
1224 }
1225
1226 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
1227 hwsim_fops_group_read, hwsim_fops_group_write,
1228 "%llx\n");
1229
1230 static int __init init_mac80211_hwsim(void)
1231 {
1232 int i, err = 0;
1233 u8 addr[ETH_ALEN];
1234 struct mac80211_hwsim_data *data;
1235 struct ieee80211_hw *hw;
1236 enum ieee80211_band band;
1237
1238 if (radios < 1 || radios > 100)
1239 return -EINVAL;
1240
1241 if (fake_hw_scan) {
1242 mac80211_hwsim_ops.hw_scan = mac80211_hwsim_hw_scan;
1243 mac80211_hwsim_ops.sw_scan_start = NULL;
1244 mac80211_hwsim_ops.sw_scan_complete = NULL;
1245 }
1246
1247 spin_lock_init(&hwsim_radio_lock);
1248 INIT_LIST_HEAD(&hwsim_radios);
1249
1250 hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
1251 if (IS_ERR(hwsim_class))
1252 return PTR_ERR(hwsim_class);
1253
1254 memset(addr, 0, ETH_ALEN);
1255 addr[0] = 0x02;
1256
1257 for (i = 0; i < radios; i++) {
1258 printk(KERN_DEBUG "mac80211_hwsim: Initializing radio %d\n",
1259 i);
1260 hw = ieee80211_alloc_hw(sizeof(*data), &mac80211_hwsim_ops);
1261 if (!hw) {
1262 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw "
1263 "failed\n");
1264 err = -ENOMEM;
1265 goto failed;
1266 }
1267 data = hw->priv;
1268 data->hw = hw;
1269
1270 data->dev = device_create(hwsim_class, NULL, 0, hw,
1271 "hwsim%d", i);
1272 if (IS_ERR(data->dev)) {
1273 printk(KERN_DEBUG
1274 "mac80211_hwsim: device_create "
1275 "failed (%ld)\n", PTR_ERR(data->dev));
1276 err = -ENOMEM;
1277 goto failed_drvdata;
1278 }
1279 data->dev->driver = &mac80211_hwsim_driver;
1280
1281 SET_IEEE80211_DEV(hw, data->dev);
1282 addr[3] = i >> 8;
1283 addr[4] = i;
1284 memcpy(data->addresses[0].addr, addr, ETH_ALEN);
1285 memcpy(data->addresses[1].addr, addr, ETH_ALEN);
1286 data->addresses[1].addr[0] |= 0x40;
1287 hw->wiphy->n_addresses = 2;
1288 hw->wiphy->addresses = data->addresses;
1289
1290 if (fake_hw_scan) {
1291 hw->wiphy->max_scan_ssids = 255;
1292 hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
1293 }
1294
1295 hw->channel_change_time = 1;
1296 hw->queues = 4;
1297 hw->wiphy->interface_modes =
1298 BIT(NL80211_IFTYPE_STATION) |
1299 BIT(NL80211_IFTYPE_AP) |
1300 BIT(NL80211_IFTYPE_ADHOC) |
1301 BIT(NL80211_IFTYPE_MESH_POINT);
1302
1303 hw->flags = IEEE80211_HW_MFP_CAPABLE |
1304 IEEE80211_HW_SIGNAL_DBM |
1305 IEEE80211_HW_SUPPORTS_STATIC_SMPS |
1306 IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
1307 IEEE80211_HW_AMPDU_AGGREGATION;
1308
1309 /* ask mac80211 to reserve space for magic */
1310 hw->vif_data_size = sizeof(struct hwsim_vif_priv);
1311 hw->sta_data_size = sizeof(struct hwsim_sta_priv);
1312
1313 memcpy(data->channels_2ghz, hwsim_channels_2ghz,
1314 sizeof(hwsim_channels_2ghz));
1315 memcpy(data->channels_5ghz, hwsim_channels_5ghz,
1316 sizeof(hwsim_channels_5ghz));
1317 memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
1318
1319 for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) {
1320 struct ieee80211_supported_band *sband = &data->bands[band];
1321 switch (band) {
1322 case IEEE80211_BAND_2GHZ:
1323 sband->channels = data->channels_2ghz;
1324 sband->n_channels =
1325 ARRAY_SIZE(hwsim_channels_2ghz);
1326 sband->bitrates = data->rates;
1327 sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
1328 break;
1329 case IEEE80211_BAND_5GHZ:
1330 sband->channels = data->channels_5ghz;
1331 sband->n_channels =
1332 ARRAY_SIZE(hwsim_channels_5ghz);
1333 sband->bitrates = data->rates + 4;
1334 sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
1335 break;
1336 default:
1337 break;
1338 }
1339
1340 sband->ht_cap.ht_supported = true;
1341 sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
1342 IEEE80211_HT_CAP_GRN_FLD |
1343 IEEE80211_HT_CAP_SGI_40 |
1344 IEEE80211_HT_CAP_DSSSCCK40;
1345 sband->ht_cap.ampdu_factor = 0x3;
1346 sband->ht_cap.ampdu_density = 0x6;
1347 memset(&sband->ht_cap.mcs, 0,
1348 sizeof(sband->ht_cap.mcs));
1349 sband->ht_cap.mcs.rx_mask[0] = 0xff;
1350 sband->ht_cap.mcs.rx_mask[1] = 0xff;
1351 sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
1352
1353 hw->wiphy->bands[band] = sband;
1354 }
1355 /* By default all radios are belonging to the first group */
1356 data->group = 1;
1357 mutex_init(&data->mutex);
1358
1359 /* Work to be done prior to ieee80211_register_hw() */
1360 switch (regtest) {
1361 case HWSIM_REGTEST_DISABLED:
1362 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
1363 case HWSIM_REGTEST_DRIVER_REG_ALL:
1364 case HWSIM_REGTEST_DIFF_COUNTRY:
1365 /*
1366 * Nothing to be done for driver regulatory domain
1367 * hints prior to ieee80211_register_hw()
1368 */
1369 break;
1370 case HWSIM_REGTEST_WORLD_ROAM:
1371 if (i == 0) {
1372 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1373 wiphy_apply_custom_regulatory(hw->wiphy,
1374 &hwsim_world_regdom_custom_01);
1375 }
1376 break;
1377 case HWSIM_REGTEST_CUSTOM_WORLD:
1378 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1379 wiphy_apply_custom_regulatory(hw->wiphy,
1380 &hwsim_world_regdom_custom_01);
1381 break;
1382 case HWSIM_REGTEST_CUSTOM_WORLD_2:
1383 if (i == 0) {
1384 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1385 wiphy_apply_custom_regulatory(hw->wiphy,
1386 &hwsim_world_regdom_custom_01);
1387 } else if (i == 1) {
1388 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1389 wiphy_apply_custom_regulatory(hw->wiphy,
1390 &hwsim_world_regdom_custom_02);
1391 }
1392 break;
1393 case HWSIM_REGTEST_STRICT_ALL:
1394 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1395 break;
1396 case HWSIM_REGTEST_STRICT_FOLLOW:
1397 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
1398 if (i == 0)
1399 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1400 break;
1401 case HWSIM_REGTEST_ALL:
1402 if (i == 0) {
1403 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1404 wiphy_apply_custom_regulatory(hw->wiphy,
1405 &hwsim_world_regdom_custom_01);
1406 } else if (i == 1) {
1407 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1408 wiphy_apply_custom_regulatory(hw->wiphy,
1409 &hwsim_world_regdom_custom_02);
1410 } else if (i == 4)
1411 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1412 break;
1413 default:
1414 break;
1415 }
1416
1417 /* give the regulatory workqueue a chance to run */
1418 if (regtest)
1419 schedule_timeout_interruptible(1);
1420 err = ieee80211_register_hw(hw);
1421 if (err < 0) {
1422 printk(KERN_DEBUG "mac80211_hwsim: "
1423 "ieee80211_register_hw failed (%d)\n", err);
1424 goto failed_hw;
1425 }
1426
1427 /* Work to be done after to ieee80211_register_hw() */
1428 switch (regtest) {
1429 case HWSIM_REGTEST_WORLD_ROAM:
1430 case HWSIM_REGTEST_DISABLED:
1431 break;
1432 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
1433 if (!i)
1434 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1435 break;
1436 case HWSIM_REGTEST_DRIVER_REG_ALL:
1437 case HWSIM_REGTEST_STRICT_ALL:
1438 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1439 break;
1440 case HWSIM_REGTEST_DIFF_COUNTRY:
1441 if (i < ARRAY_SIZE(hwsim_alpha2s))
1442 regulatory_hint(hw->wiphy, hwsim_alpha2s[i]);
1443 break;
1444 case HWSIM_REGTEST_CUSTOM_WORLD:
1445 case HWSIM_REGTEST_CUSTOM_WORLD_2:
1446 /*
1447 * Nothing to be done for custom world regulatory
1448 * domains after to ieee80211_register_hw
1449 */
1450 break;
1451 case HWSIM_REGTEST_STRICT_FOLLOW:
1452 if (i == 0)
1453 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1454 break;
1455 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
1456 if (i == 0)
1457 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1458 else if (i == 1)
1459 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
1460 break;
1461 case HWSIM_REGTEST_ALL:
1462 if (i == 2)
1463 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1464 else if (i == 3)
1465 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
1466 else if (i == 4)
1467 regulatory_hint(hw->wiphy, hwsim_alpha2s[2]);
1468 break;
1469 default:
1470 break;
1471 }
1472
1473 wiphy_debug(hw->wiphy, "hwaddr %pm registered\n",
1474 hw->wiphy->perm_addr);
1475
1476 data->debugfs = debugfs_create_dir("hwsim",
1477 hw->wiphy->debugfsdir);
1478 data->debugfs_ps = debugfs_create_file("ps", 0666,
1479 data->debugfs, data,
1480 &hwsim_fops_ps);
1481 data->debugfs_group = debugfs_create_file("group", 0666,
1482 data->debugfs, data,
1483 &hwsim_fops_group);
1484
1485 setup_timer(&data->beacon_timer, mac80211_hwsim_beacon,
1486 (unsigned long) hw);
1487
1488 list_add_tail(&data->list, &hwsim_radios);
1489 }
1490
1491 hwsim_mon = alloc_netdev(0, "hwsim%d", hwsim_mon_setup);
1492 if (hwsim_mon == NULL)
1493 goto failed;
1494
1495 rtnl_lock();
1496
1497 err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
1498 if (err < 0)
1499 goto failed_mon;
1500
1501
1502 err = register_netdevice(hwsim_mon);
1503 if (err < 0)
1504 goto failed_mon;
1505
1506 rtnl_unlock();
1507
1508 return 0;
1509
1510 failed_mon:
1511 rtnl_unlock();
1512 free_netdev(hwsim_mon);
1513 mac80211_hwsim_free();
1514 return err;
1515
1516 failed_hw:
1517 device_unregister(data->dev);
1518 failed_drvdata:
1519 ieee80211_free_hw(hw);
1520 failed:
1521 mac80211_hwsim_free();
1522 return err;
1523 }
1524
1525
1526 static void __exit exit_mac80211_hwsim(void)
1527 {
1528 printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
1529
1530 mac80211_hwsim_free();
1531 unregister_netdev(hwsim_mon);
1532 }
1533
1534
1535 module_init(init_mac80211_hwsim);
1536 module_exit(exit_mac80211_hwsim);
Linux kernel - Deliverables
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