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ASoC: Fix handling of bias levels for non-DAPM codecs
[linux/fpc-iii.git] / drivers / net / wireless / mac80211_hwsim.c
blobe789c6e9938cb60e62a918b2f5e2083af7251591
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/mac80211.h>
19 #include <net/ieee80211_radiotap.h>
20 #include <linux/if_arp.h>
21 #include <linux/rtnetlink.h>
22 #include <linux/etherdevice.h>
23 #include <linux/debugfs.h>
24
25 MODULE_AUTHOR("Jouni Malinen");
26 MODULE_DESCRIPTION("Software simulator of 802.11 radio(s) for mac80211");
27 MODULE_LICENSE("GPL");
28
29 static int radios = 2;
30 module_param(radios, int, 0444);
31 MODULE_PARM_DESC(radios, "Number of simulated radios");
32
33 /**
34 * enum hwsim_regtest - the type of regulatory tests we offer
35 *
36 * These are the different values you can use for the regtest
37 * module parameter. This is useful to help test world roaming
38 * and the driver regulatory_hint() call and combinations of these.
39 * If you want to do specific alpha2 regulatory domain tests simply
40 * use the userspace regulatory request as that will be respected as
41 * well without the need of this module parameter. This is designed
42 * only for testing the driver regulatory request, world roaming
43 * and all possible combinations.
44 *
45 * @HWSIM_REGTEST_DISABLED: No regulatory tests are performed,
46 * this is the default value.
47 * @HWSIM_REGTEST_DRIVER_REG_FOLLOW: Used for testing the driver regulatory
48 * hint, only one driver regulatory hint will be sent as such the
49 * secondary radios are expected to follow.
50 * @HWSIM_REGTEST_DRIVER_REG_ALL: Used for testing the driver regulatory
51 * request with all radios reporting the same regulatory domain.
52 * @HWSIM_REGTEST_DIFF_COUNTRY: Used for testing the drivers calling
53 * different regulatory domains requests. Expected behaviour is for
54 * an intersection to occur but each device will still use their
55 * respective regulatory requested domains. Subsequent radios will
56 * use the resulting intersection.
57 * @HWSIM_REGTEST_WORLD_ROAM: Used for testing the world roaming. We acomplish
58 * this by using a custom beacon-capable regulatory domain for the first
59 * radio. All other device world roam.
60 * @HWSIM_REGTEST_CUSTOM_WORLD: Used for testing the custom world regulatory
61 * domain requests. All radios will adhere to this custom world regulatory
62 * domain.
63 * @HWSIM_REGTEST_CUSTOM_WORLD_2: Used for testing 2 custom world regulatory
64 * domain requests. The first radio will adhere to the first custom world
65 * regulatory domain, the second one to the second custom world regulatory
66 * domain. All other devices will world roam.
67 * @HWSIM_REGTEST_STRICT_FOLLOW_: Used for testing strict regulatory domain
68 * settings, only the first radio will send a regulatory domain request
69 * and use strict settings. The rest of the radios are expected to follow.
70 * @HWSIM_REGTEST_STRICT_ALL: Used for testing strict regulatory domain
71 * settings. All radios will adhere to this.
72 * @HWSIM_REGTEST_STRICT_AND_DRIVER_REG: Used for testing strict regulatory
73 * domain settings, combined with secondary driver regulatory domain
74 * settings. The first radio will get a strict regulatory domain setting
75 * using the first driver regulatory request and the second radio will use
76 * non-strict settings using the second driver regulatory request. All
77 * other devices should follow the intersection created between the
78 * first two.
79 * @HWSIM_REGTEST_ALL: Used for testing every possible mix. You will need
80 * at least 6 radios for a complete test. We will test in this order:
81 * 1 - driver custom world regulatory domain
82 * 2 - second custom world regulatory domain
83 * 3 - first driver regulatory domain request
84 * 4 - second driver regulatory domain request
85 * 5 - strict regulatory domain settings using the third driver regulatory
86 * domain request
87 * 6 and on - should follow the intersection of the 3rd, 4rth and 5th radio
88 * regulatory requests.
89 */
90 enum hwsim_regtest {
91 HWSIM_REGTEST_DISABLED = 0,
92 HWSIM_REGTEST_DRIVER_REG_FOLLOW = 1,
93 HWSIM_REGTEST_DRIVER_REG_ALL = 2,
94 HWSIM_REGTEST_DIFF_COUNTRY = 3,
95 HWSIM_REGTEST_WORLD_ROAM = 4,
96 HWSIM_REGTEST_CUSTOM_WORLD = 5,
97 HWSIM_REGTEST_CUSTOM_WORLD_2 = 6,
98 HWSIM_REGTEST_STRICT_FOLLOW = 7,
99 HWSIM_REGTEST_STRICT_ALL = 8,
100 HWSIM_REGTEST_STRICT_AND_DRIVER_REG = 9,
101 HWSIM_REGTEST_ALL = 10,
102 };
103
104 /* Set to one of the HWSIM_REGTEST_* values above */
105 static int regtest = HWSIM_REGTEST_DISABLED;
106 module_param(regtest, int, 0444);
107 MODULE_PARM_DESC(regtest, "The type of regulatory test we want to run");
108
109 static const char *hwsim_alpha2s[] = {
110 "FI",
111 "AL",
112 "US",
113 "DE",
114 "JP",
115 "AL",
116 };
117
118 static const struct ieee80211_regdomain hwsim_world_regdom_custom_01 = {
119 .n_reg_rules = 4,
120 .alpha2 = "99",
121 .reg_rules = {
122 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
123 REG_RULE(2484-10, 2484+10, 40, 0, 20, 0),
124 REG_RULE(5150-10, 5240+10, 40, 0, 30, 0),
125 REG_RULE(5745-10, 5825+10, 40, 0, 30, 0),
126 }
127 };
128
129 static const struct ieee80211_regdomain hwsim_world_regdom_custom_02 = {
130 .n_reg_rules = 2,
131 .alpha2 = "99",
132 .reg_rules = {
133 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
134 REG_RULE(5725-10, 5850+10, 40, 0, 30,
135 NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS),
136 }
137 };
138
139 struct hwsim_vif_priv {
140 u32 magic;
141 u8 bssid[ETH_ALEN];
142 bool assoc;
143 u16 aid;
144 };
145
146 #define HWSIM_VIF_MAGIC 0x69537748
147
148 static inline void hwsim_check_magic(struct ieee80211_vif *vif)
149 {
150 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
151 WARN_ON(vp->magic != HWSIM_VIF_MAGIC);
152 }
153
154 static inline void hwsim_set_magic(struct ieee80211_vif *vif)
155 {
156 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
157 vp->magic = HWSIM_VIF_MAGIC;
158 }
159
160 static inline void hwsim_clear_magic(struct ieee80211_vif *vif)
161 {
162 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
163 vp->magic = 0;
164 }
165
166 struct hwsim_sta_priv {
167 u32 magic;
168 };
169
170 #define HWSIM_STA_MAGIC 0x6d537748
171
172 static inline void hwsim_check_sta_magic(struct ieee80211_sta *sta)
173 {
174 struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
175 WARN_ON(sp->magic != HWSIM_STA_MAGIC);
176 }
177
178 static inline void hwsim_set_sta_magic(struct ieee80211_sta *sta)
179 {
180 struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
181 sp->magic = HWSIM_STA_MAGIC;
182 }
183
184 static inline void hwsim_clear_sta_magic(struct ieee80211_sta *sta)
185 {
186 struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
187 sp->magic = 0;
188 }
189
190 static struct class *hwsim_class;
191
192 static struct net_device *hwsim_mon; /* global monitor netdev */
193
194 #define CHAN2G(_freq) { \
195 .band = IEEE80211_BAND_2GHZ, \
196 .center_freq = (_freq), \
197 .hw_value = (_freq), \
198 .max_power = 20, \
199 }
200
201 #define CHAN5G(_freq) { \
202 .band = IEEE80211_BAND_5GHZ, \
203 .center_freq = (_freq), \
204 .hw_value = (_freq), \
205 .max_power = 20, \
206 }
207
208 static const struct ieee80211_channel hwsim_channels_2ghz[] = {
209 CHAN2G(2412), /* Channel 1 */
210 CHAN2G(2417), /* Channel 2 */
211 CHAN2G(2422), /* Channel 3 */
212 CHAN2G(2427), /* Channel 4 */
213 CHAN2G(2432), /* Channel 5 */
214 CHAN2G(2437), /* Channel 6 */
215 CHAN2G(2442), /* Channel 7 */
216 CHAN2G(2447), /* Channel 8 */
217 CHAN2G(2452), /* Channel 9 */
218 CHAN2G(2457), /* Channel 10 */
219 CHAN2G(2462), /* Channel 11 */
220 CHAN2G(2467), /* Channel 12 */
221 CHAN2G(2472), /* Channel 13 */
222 CHAN2G(2484), /* Channel 14 */
223 };
224
225 static const struct ieee80211_channel hwsim_channels_5ghz[] = {
226 CHAN5G(5180), /* Channel 36 */
227 CHAN5G(5200), /* Channel 40 */
228 CHAN5G(5220), /* Channel 44 */
229 CHAN5G(5240), /* Channel 48 */
230
231 CHAN5G(5260), /* Channel 52 */
232 CHAN5G(5280), /* Channel 56 */
233 CHAN5G(5300), /* Channel 60 */
234 CHAN5G(5320), /* Channel 64 */
235
236 CHAN5G(5500), /* Channel 100 */
237 CHAN5G(5520), /* Channel 104 */
238 CHAN5G(5540), /* Channel 108 */
239 CHAN5G(5560), /* Channel 112 */
240 CHAN5G(5580), /* Channel 116 */
241 CHAN5G(5600), /* Channel 120 */
242 CHAN5G(5620), /* Channel 124 */
243 CHAN5G(5640), /* Channel 128 */
244 CHAN5G(5660), /* Channel 132 */
245 CHAN5G(5680), /* Channel 136 */
246 CHAN5G(5700), /* Channel 140 */
247
248 CHAN5G(5745), /* Channel 149 */
249 CHAN5G(5765), /* Channel 153 */
250 CHAN5G(5785), /* Channel 157 */
251 CHAN5G(5805), /* Channel 161 */
252 CHAN5G(5825), /* Channel 165 */
253 };
254
255 static const struct ieee80211_rate hwsim_rates[] = {
256 { .bitrate = 10 },
257 { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
258 { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
259 { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
260 { .bitrate = 60 },
261 { .bitrate = 90 },
262 { .bitrate = 120 },
263 { .bitrate = 180 },
264 { .bitrate = 240 },
265 { .bitrate = 360 },
266 { .bitrate = 480 },
267 { .bitrate = 540 }
268 };
269
270 static spinlock_t hwsim_radio_lock;
271 static struct list_head hwsim_radios;
272
273 struct mac80211_hwsim_data {
274 struct list_head list;
275 struct ieee80211_hw *hw;
276 struct device *dev;
277 struct ieee80211_supported_band bands[2];
278 struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)];
279 struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)];
280 struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
281
282 struct ieee80211_channel *channel;
283 unsigned long beacon_int; /* in jiffies unit */
284 unsigned int rx_filter;
285 int started;
286 struct timer_list beacon_timer;
287 enum ps_mode {
288 PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
289 } ps;
290 bool ps_poll_pending;
291 struct dentry *debugfs;
292 struct dentry *debugfs_ps;
293
294 /*
295 * Only radios in the same group can communicate together (the
296 * channel has to match too). Each bit represents a group. A
297 * radio can be in more then one group.
298 */
299 u64 group;
300 struct dentry *debugfs_group;
301 };
302
303
304 struct hwsim_radiotap_hdr {
305 struct ieee80211_radiotap_header hdr;
306 u8 rt_flags;
307 u8 rt_rate;
308 __le16 rt_channel;
309 __le16 rt_chbitmask;
310 } __attribute__ ((packed));
311
312
313 static int hwsim_mon_xmit(struct sk_buff *skb, struct net_device *dev)
314 {
315 /* TODO: allow packet injection */
316 dev_kfree_skb(skb);
317 return 0;
318 }
319
320
321 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
322 struct sk_buff *tx_skb)
323 {
324 struct mac80211_hwsim_data *data = hw->priv;
325 struct sk_buff *skb;
326 struct hwsim_radiotap_hdr *hdr;
327 u16 flags;
328 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
329 struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
330
331 if (!netif_running(hwsim_mon))
332 return;
333
334 skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
335 if (skb == NULL)
336 return;
337
338 hdr = (struct hwsim_radiotap_hdr *) skb_push(skb, sizeof(*hdr));
339 hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
340 hdr->hdr.it_pad = 0;
341 hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
342 hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
343 (1 << IEEE80211_RADIOTAP_RATE) |
344 (1 << IEEE80211_RADIOTAP_CHANNEL));
345 hdr->rt_flags = 0;
346 hdr->rt_rate = txrate->bitrate / 5;
347 hdr->rt_channel = cpu_to_le16(data->channel->center_freq);
348 flags = IEEE80211_CHAN_2GHZ;
349 if (txrate->flags & IEEE80211_RATE_ERP_G)
350 flags |= IEEE80211_CHAN_OFDM;
351 else
352 flags |= IEEE80211_CHAN_CCK;
353 hdr->rt_chbitmask = cpu_to_le16(flags);
354
355 skb->dev = hwsim_mon;
356 skb_set_mac_header(skb, 0);
357 skb->ip_summed = CHECKSUM_UNNECESSARY;
358 skb->pkt_type = PACKET_OTHERHOST;
359 skb->protocol = htons(ETH_P_802_2);
360 memset(skb->cb, 0, sizeof(skb->cb));
361 netif_rx(skb);
362 }
363
364
365 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
366 struct sk_buff *skb)
367 {
368 switch (data->ps) {
369 case PS_DISABLED:
370 return true;
371 case PS_ENABLED:
372 return false;
373 case PS_AUTO_POLL:
374 /* TODO: accept (some) Beacons by default and other frames only
375 * if pending PS-Poll has been sent */
376 return true;
377 case PS_MANUAL_POLL:
378 /* Allow unicast frames to own address if there is a pending
379 * PS-Poll */
380 if (data->ps_poll_pending &&
381 memcmp(data->hw->wiphy->perm_addr, skb->data + 4,
382 ETH_ALEN) == 0) {
383 data->ps_poll_pending = false;
384 return true;
385 }
386 return false;
387 }
388
389 return true;
390 }
391
392
393 static bool mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
394 struct sk_buff *skb)
395 {
396 struct mac80211_hwsim_data *data = hw->priv, *data2;
397 bool ack = false;
398 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
399 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
400 struct ieee80211_rx_status rx_status;
401
402 memset(&rx_status, 0, sizeof(rx_status));
403 /* TODO: set mactime */
404 rx_status.freq = data->channel->center_freq;
405 rx_status.band = data->channel->band;
406 rx_status.rate_idx = info->control.rates[0].idx;
407 /* TODO: simulate signal strength (and optional packet drop) */
408
409 if (data->ps != PS_DISABLED)
410 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
411
412 /* Copy skb to all enabled radios that are on the current frequency */
413 spin_lock(&hwsim_radio_lock);
414 list_for_each_entry(data2, &hwsim_radios, list) {
415 struct sk_buff *nskb;
416
417 if (data == data2)
418 continue;
419
420 if (!data2->started || !hwsim_ps_rx_ok(data2, skb) ||
421 data->channel->center_freq != data2->channel->center_freq ||
422 !(data->group & data2->group))
423 continue;
424
425 nskb = skb_copy(skb, GFP_ATOMIC);
426 if (nskb == NULL)
427 continue;
428
429 if (memcmp(hdr->addr1, data2->hw->wiphy->perm_addr,
430 ETH_ALEN) == 0)
431 ack = true;
432 ieee80211_rx_irqsafe(data2->hw, nskb, &rx_status);
433 }
434 spin_unlock(&hwsim_radio_lock);
435
436 return ack;
437 }
438
439
440 static int mac80211_hwsim_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
441 {
442 bool ack;
443 struct ieee80211_tx_info *txi;
444
445 mac80211_hwsim_monitor_rx(hw, skb);
446
447 if (skb->len < 10) {
448 /* Should not happen; just a sanity check for addr1 use */
449 dev_kfree_skb(skb);
450 return NETDEV_TX_OK;
451 }
452
453 ack = mac80211_hwsim_tx_frame(hw, skb);
454
455 txi = IEEE80211_SKB_CB(skb);
456
457 if (txi->control.vif)
458 hwsim_check_magic(txi->control.vif);
459 if (txi->control.sta)
460 hwsim_check_sta_magic(txi->control.sta);
461
462 ieee80211_tx_info_clear_status(txi);
463 if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
464 txi->flags |= IEEE80211_TX_STAT_ACK;
465 ieee80211_tx_status_irqsafe(hw, skb);
466 return NETDEV_TX_OK;
467 }
468
469
470 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
471 {
472 struct mac80211_hwsim_data *data = hw->priv;
473 printk(KERN_DEBUG "%s:%s\n", wiphy_name(hw->wiphy), __func__);
474 data->started = 1;
475 return 0;
476 }
477
478
479 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
480 {
481 struct mac80211_hwsim_data *data = hw->priv;
482 data->started = 0;
483 del_timer(&data->beacon_timer);
484 printk(KERN_DEBUG "%s:%s\n", wiphy_name(hw->wiphy), __func__);
485 }
486
487
488 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
489 struct ieee80211_if_init_conf *conf)
490 {
491 printk(KERN_DEBUG "%s:%s (type=%d mac_addr=%pM)\n",
492 wiphy_name(hw->wiphy), __func__, conf->type,
493 conf->mac_addr);
494 hwsim_set_magic(conf->vif);
495 return 0;
496 }
497
498
499 static void mac80211_hwsim_remove_interface(
500 struct ieee80211_hw *hw, struct ieee80211_if_init_conf *conf)
501 {
502 printk(KERN_DEBUG "%s:%s (type=%d mac_addr=%pM)\n",
503 wiphy_name(hw->wiphy), __func__, conf->type,
504 conf->mac_addr);
505 hwsim_check_magic(conf->vif);
506 hwsim_clear_magic(conf->vif);
507 }
508
509
510 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
511 struct ieee80211_vif *vif)
512 {
513 struct ieee80211_hw *hw = arg;
514 struct sk_buff *skb;
515 struct ieee80211_tx_info *info;
516
517 hwsim_check_magic(vif);
518
519 if (vif->type != NL80211_IFTYPE_AP &&
520 vif->type != NL80211_IFTYPE_MESH_POINT)
521 return;
522
523 skb = ieee80211_beacon_get(hw, vif);
524 if (skb == NULL)
525 return;
526 info = IEEE80211_SKB_CB(skb);
527
528 mac80211_hwsim_monitor_rx(hw, skb);
529 mac80211_hwsim_tx_frame(hw, skb);
530 dev_kfree_skb(skb);
531 }
532
533
534 static void mac80211_hwsim_beacon(unsigned long arg)
535 {
536 struct ieee80211_hw *hw = (struct ieee80211_hw *) arg;
537 struct mac80211_hwsim_data *data = hw->priv;
538
539 if (!data->started)
540 return;
541
542 ieee80211_iterate_active_interfaces_atomic(
543 hw, mac80211_hwsim_beacon_tx, hw);
544
545 data->beacon_timer.expires = jiffies + data->beacon_int;
546 add_timer(&data->beacon_timer);
547 }
548
549
550 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
551 {
552 struct mac80211_hwsim_data *data = hw->priv;
553 struct ieee80211_conf *conf = &hw->conf;
554
555 printk(KERN_DEBUG "%s:%s (freq=%d idle=%d ps=%d)\n",
556 wiphy_name(hw->wiphy), __func__,
557 conf->channel->center_freq,
558 !!(conf->flags & IEEE80211_CONF_IDLE),
559 !!(conf->flags & IEEE80211_CONF_PS));
560
561 data->channel = conf->channel;
562 if (!data->started || !data->beacon_int)
563 del_timer(&data->beacon_timer);
564 else
565 mod_timer(&data->beacon_timer, jiffies + data->beacon_int);
566
567 return 0;
568 }
569
570
571 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
572 unsigned int changed_flags,
573 unsigned int *total_flags,
574 int mc_count,
575 struct dev_addr_list *mc_list)
576 {
577 struct mac80211_hwsim_data *data = hw->priv;
578
579 printk(KERN_DEBUG "%s:%s\n", wiphy_name(hw->wiphy), __func__);
580
581 data->rx_filter = 0;
582 if (*total_flags & FIF_PROMISC_IN_BSS)
583 data->rx_filter |= FIF_PROMISC_IN_BSS;
584 if (*total_flags & FIF_ALLMULTI)
585 data->rx_filter |= FIF_ALLMULTI;
586
587 *total_flags = data->rx_filter;
588 }
589
590 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
591 struct ieee80211_vif *vif,
592 struct ieee80211_bss_conf *info,
593 u32 changed)
594 {
595 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
596 struct mac80211_hwsim_data *data = hw->priv;
597
598 hwsim_check_magic(vif);
599
600 printk(KERN_DEBUG "%s:%s(changed=0x%x)\n",
601 wiphy_name(hw->wiphy), __func__, changed);
602
603 if (changed & BSS_CHANGED_BSSID) {
604 printk(KERN_DEBUG "%s:%s: BSSID changed: %pM\n",
605 wiphy_name(hw->wiphy), __func__,
606 info->bssid);
607 memcpy(vp->bssid, info->bssid, ETH_ALEN);
608 }
609
610 if (changed & BSS_CHANGED_ASSOC) {
611 printk(KERN_DEBUG " %s: ASSOC: assoc=%d aid=%d\n",
612 wiphy_name(hw->wiphy), info->assoc, info->aid);
613 vp->assoc = info->assoc;
614 vp->aid = info->aid;
615 }
616
617 if (changed & BSS_CHANGED_BEACON_INT) {
618 printk(KERN_DEBUG " %s: BCNINT: %d\n",
619 wiphy_name(hw->wiphy), info->beacon_int);
620 data->beacon_int = 1024 * info->beacon_int / 1000 * HZ / 1000;
621 if (WARN_ON(!data->beacon_int))
622 data->beacon_int = 1;
623 }
624
625 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
626 printk(KERN_DEBUG " %s: ERP_CTS_PROT: %d\n",
627 wiphy_name(hw->wiphy), info->use_cts_prot);
628 }
629
630 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
631 printk(KERN_DEBUG " %s: ERP_PREAMBLE: %d\n",
632 wiphy_name(hw->wiphy), info->use_short_preamble);
633 }
634
635 if (changed & BSS_CHANGED_ERP_SLOT) {
636 printk(KERN_DEBUG " %s: ERP_SLOT: %d\n",
637 wiphy_name(hw->wiphy), info->use_short_slot);
638 }
639
640 if (changed & BSS_CHANGED_HT) {
641 printk(KERN_DEBUG " %s: HT: op_mode=0x%x\n",
642 wiphy_name(hw->wiphy),
643 info->ht_operation_mode);
644 }
645
646 if (changed & BSS_CHANGED_BASIC_RATES) {
647 printk(KERN_DEBUG " %s: BASIC_RATES: 0x%llx\n",
648 wiphy_name(hw->wiphy),
649 (unsigned long long) info->basic_rates);
650 }
651 }
652
653 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
654 struct ieee80211_vif *vif,
655 enum sta_notify_cmd cmd,
656 struct ieee80211_sta *sta)
657 {
658 hwsim_check_magic(vif);
659 switch (cmd) {
660 case STA_NOTIFY_ADD:
661 hwsim_set_sta_magic(sta);
662 break;
663 case STA_NOTIFY_REMOVE:
664 hwsim_clear_sta_magic(sta);
665 break;
666 case STA_NOTIFY_SLEEP:
667 case STA_NOTIFY_AWAKE:
668 /* TODO: make good use of these flags */
669 break;
670 }
671 }
672
673 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
674 struct ieee80211_sta *sta,
675 bool set)
676 {
677 hwsim_check_sta_magic(sta);
678 return 0;
679 }
680
681 static int mac80211_hwsim_conf_tx(
682 struct ieee80211_hw *hw, u16 queue,
683 const struct ieee80211_tx_queue_params *params)
684 {
685 printk(KERN_DEBUG "%s:%s (queue=%d txop=%d cw_min=%d cw_max=%d "
686 "aifs=%d)\n",
687 wiphy_name(hw->wiphy), __func__, queue,
688 params->txop, params->cw_min, params->cw_max, params->aifs);
689 return 0;
690 }
691
692 static const struct ieee80211_ops mac80211_hwsim_ops =
693 {
694 .tx = mac80211_hwsim_tx,
695 .start = mac80211_hwsim_start,
696 .stop = mac80211_hwsim_stop,
697 .add_interface = mac80211_hwsim_add_interface,
698 .remove_interface = mac80211_hwsim_remove_interface,
699 .config = mac80211_hwsim_config,
700 .configure_filter = mac80211_hwsim_configure_filter,
701 .bss_info_changed = mac80211_hwsim_bss_info_changed,
702 .sta_notify = mac80211_hwsim_sta_notify,
703 .set_tim = mac80211_hwsim_set_tim,
704 .conf_tx = mac80211_hwsim_conf_tx,
705 };
706
707
708 static void mac80211_hwsim_free(void)
709 {
710 struct list_head tmplist, *i, *tmp;
711 struct mac80211_hwsim_data *data;
712
713 INIT_LIST_HEAD(&tmplist);
714
715 spin_lock_bh(&hwsim_radio_lock);
716 list_for_each_safe(i, tmp, &hwsim_radios)
717 list_move(i, &tmplist);
718 spin_unlock_bh(&hwsim_radio_lock);
719
720 list_for_each_entry(data, &tmplist, list) {
721 debugfs_remove(data->debugfs_group);
722 debugfs_remove(data->debugfs_ps);
723 debugfs_remove(data->debugfs);
724 ieee80211_unregister_hw(data->hw);
725 device_unregister(data->dev);
726 ieee80211_free_hw(data->hw);
727 }
728 class_destroy(hwsim_class);
729 }
730
731
732 static struct device_driver mac80211_hwsim_driver = {
733 .name = "mac80211_hwsim"
734 };
735
736 static const struct net_device_ops hwsim_netdev_ops = {
737 .ndo_start_xmit = hwsim_mon_xmit,
738 .ndo_change_mtu = eth_change_mtu,
739 .ndo_set_mac_address = eth_mac_addr,
740 .ndo_validate_addr = eth_validate_addr,
741 };
742
743 static void hwsim_mon_setup(struct net_device *dev)
744 {
745 dev->netdev_ops = &hwsim_netdev_ops;
746 dev->destructor = free_netdev;
747 ether_setup(dev);
748 dev->tx_queue_len = 0;
749 dev->type = ARPHRD_IEEE80211_RADIOTAP;
750 memset(dev->dev_addr, 0, ETH_ALEN);
751 dev->dev_addr[0] = 0x12;
752 }
753
754
755 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
756 {
757 struct mac80211_hwsim_data *data = dat;
758 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
759 DECLARE_MAC_BUF(buf);
760 struct sk_buff *skb;
761 struct ieee80211_pspoll *pspoll;
762
763 if (!vp->assoc)
764 return;
765
766 printk(KERN_DEBUG "%s:%s: send PS-Poll to %pM for aid %d\n",
767 wiphy_name(data->hw->wiphy), __func__, vp->bssid, vp->aid);
768
769 skb = dev_alloc_skb(sizeof(*pspoll));
770 if (!skb)
771 return;
772 pspoll = (void *) skb_put(skb, sizeof(*pspoll));
773 pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
774 IEEE80211_STYPE_PSPOLL |
775 IEEE80211_FCTL_PM);
776 pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
777 memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
778 memcpy(pspoll->ta, mac, ETH_ALEN);
779 if (!mac80211_hwsim_tx_frame(data->hw, skb))
780 printk(KERN_DEBUG "%s: PS-Poll frame not ack'ed\n", __func__);
781 dev_kfree_skb(skb);
782 }
783
784
785 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
786 struct ieee80211_vif *vif, int ps)
787 {
788 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
789 DECLARE_MAC_BUF(buf);
790 struct sk_buff *skb;
791 struct ieee80211_hdr *hdr;
792
793 if (!vp->assoc)
794 return;
795
796 printk(KERN_DEBUG "%s:%s: send data::nullfunc to %pM ps=%d\n",
797 wiphy_name(data->hw->wiphy), __func__, vp->bssid, ps);
798
799 skb = dev_alloc_skb(sizeof(*hdr));
800 if (!skb)
801 return;
802 hdr = (void *) skb_put(skb, sizeof(*hdr) - ETH_ALEN);
803 hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
804 IEEE80211_STYPE_NULLFUNC |
805 (ps ? IEEE80211_FCTL_PM : 0));
806 hdr->duration_id = cpu_to_le16(0);
807 memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
808 memcpy(hdr->addr2, mac, ETH_ALEN);
809 memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
810 if (!mac80211_hwsim_tx_frame(data->hw, skb))
811 printk(KERN_DEBUG "%s: nullfunc frame not ack'ed\n", __func__);
812 dev_kfree_skb(skb);
813 }
814
815
816 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
817 struct ieee80211_vif *vif)
818 {
819 struct mac80211_hwsim_data *data = dat;
820 hwsim_send_nullfunc(data, mac, vif, 1);
821 }
822
823
824 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
825 struct ieee80211_vif *vif)
826 {
827 struct mac80211_hwsim_data *data = dat;
828 hwsim_send_nullfunc(data, mac, vif, 0);
829 }
830
831
832 static int hwsim_fops_ps_read(void *dat, u64 *val)
833 {
834 struct mac80211_hwsim_data *data = dat;
835 *val = data->ps;
836 return 0;
837 }
838
839 static int hwsim_fops_ps_write(void *dat, u64 val)
840 {
841 struct mac80211_hwsim_data *data = dat;
842 enum ps_mode old_ps;
843
844 if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
845 val != PS_MANUAL_POLL)
846 return -EINVAL;
847
848 old_ps = data->ps;
849 data->ps = val;
850
851 if (val == PS_MANUAL_POLL) {
852 ieee80211_iterate_active_interfaces(data->hw,
853 hwsim_send_ps_poll, data);
854 data->ps_poll_pending = true;
855 } else if (old_ps == PS_DISABLED && val != PS_DISABLED) {
856 ieee80211_iterate_active_interfaces(data->hw,
857 hwsim_send_nullfunc_ps,
858 data);
859 } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
860 ieee80211_iterate_active_interfaces(data->hw,
861 hwsim_send_nullfunc_no_ps,
862 data);
863 }
864
865 return 0;
866 }
867
868 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
869 "%llu\n");
870
871
872 static int hwsim_fops_group_read(void *dat, u64 *val)
873 {
874 struct mac80211_hwsim_data *data = dat;
875 *val = data->group;
876 return 0;
877 }
878
879 static int hwsim_fops_group_write(void *dat, u64 val)
880 {
881 struct mac80211_hwsim_data *data = dat;
882 data->group = val;
883 return 0;
884 }
885
886 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
887 hwsim_fops_group_read, hwsim_fops_group_write,
888 "%llx\n");
889
890 static int __init init_mac80211_hwsim(void)
891 {
892 int i, err = 0;
893 u8 addr[ETH_ALEN];
894 struct mac80211_hwsim_data *data;
895 struct ieee80211_hw *hw;
896 enum ieee80211_band band;
897
898 if (radios < 1 || radios > 100)
899 return -EINVAL;
900
901 spin_lock_init(&hwsim_radio_lock);
902 INIT_LIST_HEAD(&hwsim_radios);
903
904 hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
905 if (IS_ERR(hwsim_class))
906 return PTR_ERR(hwsim_class);
907
908 memset(addr, 0, ETH_ALEN);
909 addr[0] = 0x02;
910
911 for (i = 0; i < radios; i++) {
912 printk(KERN_DEBUG "mac80211_hwsim: Initializing radio %d\n",
913 i);
914 hw = ieee80211_alloc_hw(sizeof(*data), &mac80211_hwsim_ops);
915 if (!hw) {
916 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw "
917 "failed\n");
918 err = -ENOMEM;
919 goto failed;
920 }
921 data = hw->priv;
922 data->hw = hw;
923
924 data->dev = device_create(hwsim_class, NULL, 0, hw,
925 "hwsim%d", i);
926 if (IS_ERR(data->dev)) {
927 printk(KERN_DEBUG
928 "mac80211_hwsim: device_create "
929 "failed (%ld)\n", PTR_ERR(data->dev));
930 err = -ENOMEM;
931 goto failed_drvdata;
932 }
933 data->dev->driver = &mac80211_hwsim_driver;
934
935 SET_IEEE80211_DEV(hw, data->dev);
936 addr[3] = i >> 8;
937 addr[4] = i;
938 SET_IEEE80211_PERM_ADDR(hw, addr);
939
940 hw->channel_change_time = 1;
941 hw->queues = 4;
942 hw->wiphy->interface_modes =
943 BIT(NL80211_IFTYPE_STATION) |
944 BIT(NL80211_IFTYPE_AP) |
945 BIT(NL80211_IFTYPE_MESH_POINT);
946
947 hw->flags = IEEE80211_HW_MFP_CAPABLE;
948
949 /* ask mac80211 to reserve space for magic */
950 hw->vif_data_size = sizeof(struct hwsim_vif_priv);
951 hw->sta_data_size = sizeof(struct hwsim_sta_priv);
952
953 memcpy(data->channels_2ghz, hwsim_channels_2ghz,
954 sizeof(hwsim_channels_2ghz));
955 memcpy(data->channels_5ghz, hwsim_channels_5ghz,
956 sizeof(hwsim_channels_5ghz));
957 memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
958
959 for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) {
960 struct ieee80211_supported_band *sband = &data->bands[band];
961 switch (band) {
962 case IEEE80211_BAND_2GHZ:
963 sband->channels = data->channels_2ghz;
964 sband->n_channels =
965 ARRAY_SIZE(hwsim_channels_2ghz);
966 break;
967 case IEEE80211_BAND_5GHZ:
968 sband->channels = data->channels_5ghz;
969 sband->n_channels =
970 ARRAY_SIZE(hwsim_channels_5ghz);
971 break;
972 default:
973 break;
974 }
975
976 sband->bitrates = data->rates;
977 sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
978
979 sband->ht_cap.ht_supported = true;
980 sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
981 IEEE80211_HT_CAP_GRN_FLD |
982 IEEE80211_HT_CAP_SGI_40 |
983 IEEE80211_HT_CAP_DSSSCCK40;
984 sband->ht_cap.ampdu_factor = 0x3;
985 sband->ht_cap.ampdu_density = 0x6;
986 memset(&sband->ht_cap.mcs, 0,
987 sizeof(sband->ht_cap.mcs));
988 sband->ht_cap.mcs.rx_mask[0] = 0xff;
989 sband->ht_cap.mcs.rx_mask[1] = 0xff;
990 sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
991
992 hw->wiphy->bands[band] = sband;
993 }
994 /* By default all radios are belonging to the first group */
995 data->group = 1;
996
997 /* Work to be done prior to ieee80211_register_hw() */
998 switch (regtest) {
999 case HWSIM_REGTEST_DISABLED:
1000 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
1001 case HWSIM_REGTEST_DRIVER_REG_ALL:
1002 case HWSIM_REGTEST_DIFF_COUNTRY:
1003 /*
1004 * Nothing to be done for driver regulatory domain
1005 * hints prior to ieee80211_register_hw()
1006 */
1007 break;
1008 case HWSIM_REGTEST_WORLD_ROAM:
1009 if (i == 0) {
1010 hw->wiphy->custom_regulatory = true;
1011 wiphy_apply_custom_regulatory(hw->wiphy,
1012 &hwsim_world_regdom_custom_01);
1013 }
1014 break;
1015 case HWSIM_REGTEST_CUSTOM_WORLD:
1016 hw->wiphy->custom_regulatory = true;
1017 wiphy_apply_custom_regulatory(hw->wiphy,
1018 &hwsim_world_regdom_custom_01);
1019 break;
1020 case HWSIM_REGTEST_CUSTOM_WORLD_2:
1021 if (i == 0) {
1022 hw->wiphy->custom_regulatory = true;
1023 wiphy_apply_custom_regulatory(hw->wiphy,
1024 &hwsim_world_regdom_custom_01);
1025 } else if (i == 1) {
1026 hw->wiphy->custom_regulatory = true;
1027 wiphy_apply_custom_regulatory(hw->wiphy,
1028 &hwsim_world_regdom_custom_02);
1029 }
1030 break;
1031 case HWSIM_REGTEST_STRICT_ALL:
1032 hw->wiphy->strict_regulatory = true;
1033 break;
1034 case HWSIM_REGTEST_STRICT_FOLLOW:
1035 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
1036 if (i == 0)
1037 hw->wiphy->strict_regulatory = true;
1038 break;
1039 case HWSIM_REGTEST_ALL:
1040 if (i == 0) {
1041 hw->wiphy->custom_regulatory = true;
1042 wiphy_apply_custom_regulatory(hw->wiphy,
1043 &hwsim_world_regdom_custom_01);
1044 } else if (i == 1) {
1045 hw->wiphy->custom_regulatory = true;
1046 wiphy_apply_custom_regulatory(hw->wiphy,
1047 &hwsim_world_regdom_custom_02);
1048 } else if (i == 4)
1049 hw->wiphy->strict_regulatory = true;
1050 break;
1051 default:
1052 break;
1053 }
1054
1055 /* give the regulatory workqueue a chance to run */
1056 if (regtest)
1057 schedule_timeout_interruptible(1);
1058 err = ieee80211_register_hw(hw);
1059 if (err < 0) {
1060 printk(KERN_DEBUG "mac80211_hwsim: "
1061 "ieee80211_register_hw failed (%d)\n", err);
1062 goto failed_hw;
1063 }
1064
1065 /* Work to be done after to ieee80211_register_hw() */
1066 switch (regtest) {
1067 case HWSIM_REGTEST_WORLD_ROAM:
1068 case HWSIM_REGTEST_DISABLED:
1069 break;
1070 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
1071 if (!i)
1072 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1073 break;
1074 case HWSIM_REGTEST_DRIVER_REG_ALL:
1075 case HWSIM_REGTEST_STRICT_ALL:
1076 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1077 break;
1078 case HWSIM_REGTEST_DIFF_COUNTRY:
1079 if (i < ARRAY_SIZE(hwsim_alpha2s))
1080 regulatory_hint(hw->wiphy, hwsim_alpha2s[i]);
1081 break;
1082 case HWSIM_REGTEST_CUSTOM_WORLD:
1083 case HWSIM_REGTEST_CUSTOM_WORLD_2:
1084 /*
1085 * Nothing to be done for custom world regulatory
1086 * domains after to ieee80211_register_hw
1087 */
1088 break;
1089 case HWSIM_REGTEST_STRICT_FOLLOW:
1090 if (i == 0)
1091 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1092 break;
1093 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
1094 if (i == 0)
1095 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1096 else if (i == 1)
1097 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
1098 break;
1099 case HWSIM_REGTEST_ALL:
1100 if (i == 2)
1101 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1102 else if (i == 3)
1103 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
1104 else if (i == 4)
1105 regulatory_hint(hw->wiphy, hwsim_alpha2s[2]);
1106 break;
1107 default:
1108 break;
1109 }
1110
1111 printk(KERN_DEBUG "%s: hwaddr %pM registered\n",
1112 wiphy_name(hw->wiphy),
1113 hw->wiphy->perm_addr);
1114
1115 data->debugfs = debugfs_create_dir("hwsim",
1116 hw->wiphy->debugfsdir);
1117 data->debugfs_ps = debugfs_create_file("ps", 0666,
1118 data->debugfs, data,
1119 &hwsim_fops_ps);
1120 data->debugfs_group = debugfs_create_file("group", 0666,
1121 data->debugfs, data,
1122 &hwsim_fops_group);
1123
1124 setup_timer(&data->beacon_timer, mac80211_hwsim_beacon,
1125 (unsigned long) hw);
1126
1127 list_add_tail(&data->list, &hwsim_radios);
1128 }
1129
1130 hwsim_mon = alloc_netdev(0, "hwsim%d", hwsim_mon_setup);
1131 if (hwsim_mon == NULL)
1132 goto failed;
1133
1134 rtnl_lock();
1135
1136 err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
1137 if (err < 0)
1138 goto failed_mon;
1139
1140
1141 err = register_netdevice(hwsim_mon);
1142 if (err < 0)
1143 goto failed_mon;
1144
1145 rtnl_unlock();
1146
1147 return 0;
1148
1149 failed_mon:
1150 rtnl_unlock();
1151 free_netdev(hwsim_mon);
1152 mac80211_hwsim_free();
1153 return err;
1154
1155 failed_hw:
1156 device_unregister(data->dev);
1157 failed_drvdata:
1158 ieee80211_free_hw(hw);
1159 failed:
1160 mac80211_hwsim_free();
1161 return err;
1162 }
1163
1164
1165 static void __exit exit_mac80211_hwsim(void)
1166 {
1167 printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
1168
1169 unregister_netdev(hwsim_mon);
1170 mac80211_hwsim_free();
1171 }
1172
1173
1174 module_init(init_mac80211_hwsim);
1175 module_exit(exit_mac80211_hwsim);
Linux with added FPC-III support