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proc: use seq_puts()/seq_putc() where possible
[linux-2.6/next.git] / drivers / net / wireless / mac80211_hwsim.c
blob454f045ddff33118525f93142e53349622e015c3
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 int power_level;
314 };
315
316
317 struct hwsim_radiotap_hdr {
318 struct ieee80211_radiotap_header hdr;
319 u8 rt_flags;
320 u8 rt_rate;
321 __le16 rt_channel;
322 __le16 rt_chbitmask;
323 } __packed;
324
325
326 static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
327 struct net_device *dev)
328 {
329 /* TODO: allow packet injection */
330 dev_kfree_skb(skb);
331 return NETDEV_TX_OK;
332 }
333
334
335 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
336 struct sk_buff *tx_skb)
337 {
338 struct mac80211_hwsim_data *data = hw->priv;
339 struct sk_buff *skb;
340 struct hwsim_radiotap_hdr *hdr;
341 u16 flags;
342 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
343 struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
344
345 if (!netif_running(hwsim_mon))
346 return;
347
348 skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
349 if (skb == NULL)
350 return;
351
352 hdr = (struct hwsim_radiotap_hdr *) skb_push(skb, sizeof(*hdr));
353 hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
354 hdr->hdr.it_pad = 0;
355 hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
356 hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
357 (1 << IEEE80211_RADIOTAP_RATE) |
358 (1 << IEEE80211_RADIOTAP_CHANNEL));
359 hdr->rt_flags = 0;
360 hdr->rt_rate = txrate->bitrate / 5;
361 hdr->rt_channel = cpu_to_le16(data->channel->center_freq);
362 flags = IEEE80211_CHAN_2GHZ;
363 if (txrate->flags & IEEE80211_RATE_ERP_G)
364 flags |= IEEE80211_CHAN_OFDM;
365 else
366 flags |= IEEE80211_CHAN_CCK;
367 hdr->rt_chbitmask = cpu_to_le16(flags);
368
369 skb->dev = hwsim_mon;
370 skb_set_mac_header(skb, 0);
371 skb->ip_summed = CHECKSUM_UNNECESSARY;
372 skb->pkt_type = PACKET_OTHERHOST;
373 skb->protocol = htons(ETH_P_802_2);
374 memset(skb->cb, 0, sizeof(skb->cb));
375 netif_rx(skb);
376 }
377
378
379 static void mac80211_hwsim_monitor_ack(struct ieee80211_hw *hw, const u8 *addr)
380 {
381 struct mac80211_hwsim_data *data = hw->priv;
382 struct sk_buff *skb;
383 struct hwsim_radiotap_hdr *hdr;
384 u16 flags;
385 struct ieee80211_hdr *hdr11;
386
387 if (!netif_running(hwsim_mon))
388 return;
389
390 skb = dev_alloc_skb(100);
391 if (skb == NULL)
392 return;
393
394 hdr = (struct hwsim_radiotap_hdr *) skb_put(skb, sizeof(*hdr));
395 hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
396 hdr->hdr.it_pad = 0;
397 hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
398 hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
399 (1 << IEEE80211_RADIOTAP_CHANNEL));
400 hdr->rt_flags = 0;
401 hdr->rt_rate = 0;
402 hdr->rt_channel = cpu_to_le16(data->channel->center_freq);
403 flags = IEEE80211_CHAN_2GHZ;
404 hdr->rt_chbitmask = cpu_to_le16(flags);
405
406 hdr11 = (struct ieee80211_hdr *) skb_put(skb, 10);
407 hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
408 IEEE80211_STYPE_ACK);
409 hdr11->duration_id = cpu_to_le16(0);
410 memcpy(hdr11->addr1, addr, ETH_ALEN);
411
412 skb->dev = hwsim_mon;
413 skb_set_mac_header(skb, 0);
414 skb->ip_summed = CHECKSUM_UNNECESSARY;
415 skb->pkt_type = PACKET_OTHERHOST;
416 skb->protocol = htons(ETH_P_802_2);
417 memset(skb->cb, 0, sizeof(skb->cb));
418 netif_rx(skb);
419 }
420
421
422 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
423 struct sk_buff *skb)
424 {
425 switch (data->ps) {
426 case PS_DISABLED:
427 return true;
428 case PS_ENABLED:
429 return false;
430 case PS_AUTO_POLL:
431 /* TODO: accept (some) Beacons by default and other frames only
432 * if pending PS-Poll has been sent */
433 return true;
434 case PS_MANUAL_POLL:
435 /* Allow unicast frames to own address if there is a pending
436 * PS-Poll */
437 if (data->ps_poll_pending &&
438 memcmp(data->hw->wiphy->perm_addr, skb->data + 4,
439 ETH_ALEN) == 0) {
440 data->ps_poll_pending = false;
441 return true;
442 }
443 return false;
444 }
445
446 return true;
447 }
448
449
450 struct mac80211_hwsim_addr_match_data {
451 bool ret;
452 const u8 *addr;
453 };
454
455 static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
456 struct ieee80211_vif *vif)
457 {
458 struct mac80211_hwsim_addr_match_data *md = data;
459 if (memcmp(mac, md->addr, ETH_ALEN) == 0)
460 md->ret = true;
461 }
462
463
464 static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
465 const u8 *addr)
466 {
467 struct mac80211_hwsim_addr_match_data md;
468
469 if (memcmp(addr, data->hw->wiphy->perm_addr, ETH_ALEN) == 0)
470 return true;
471
472 md.ret = false;
473 md.addr = addr;
474 ieee80211_iterate_active_interfaces_atomic(data->hw,
475 mac80211_hwsim_addr_iter,
476 &md);
477
478 return md.ret;
479 }
480
481
482 static bool mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
483 struct sk_buff *skb)
484 {
485 struct mac80211_hwsim_data *data = hw->priv, *data2;
486 bool ack = false;
487 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
488 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
489 struct ieee80211_rx_status rx_status;
490
491 if (data->idle) {
492 wiphy_debug(hw->wiphy, "Trying to TX when idle - reject\n");
493 return false;
494 }
495
496 memset(&rx_status, 0, sizeof(rx_status));
497 /* TODO: set mactime */
498 rx_status.freq = data->channel->center_freq;
499 rx_status.band = data->channel->band;
500 rx_status.rate_idx = info->control.rates[0].idx;
501 /* TODO: simulate real signal strength (and optional packet loss) */
502 rx_status.signal = data->power_level - 50;
503
504 if (data->ps != PS_DISABLED)
505 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
506
507 /* release the skb's source info */
508 skb_orphan(skb);
509 skb_dst_drop(skb);
510 skb->mark = 0;
511 secpath_reset(skb);
512 nf_reset(skb);
513
514 /* Copy skb to all enabled radios that are on the current frequency */
515 spin_lock(&hwsim_radio_lock);
516 list_for_each_entry(data2, &hwsim_radios, list) {
517 struct sk_buff *nskb;
518
519 if (data == data2)
520 continue;
521
522 if (data2->idle || !data2->started ||
523 !hwsim_ps_rx_ok(data2, skb) ||
524 !data->channel || !data2->channel ||
525 data->channel->center_freq != data2->channel->center_freq ||
526 !(data->group & data2->group))
527 continue;
528
529 nskb = skb_copy(skb, GFP_ATOMIC);
530 if (nskb == NULL)
531 continue;
532
533 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
534 ack = true;
535 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
536 ieee80211_rx_irqsafe(data2->hw, nskb);
537 }
538 spin_unlock(&hwsim_radio_lock);
539
540 return ack;
541 }
542
543
544 static int mac80211_hwsim_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
545 {
546 bool ack;
547 struct ieee80211_tx_info *txi;
548
549 mac80211_hwsim_monitor_rx(hw, skb);
550
551 if (skb->len < 10) {
552 /* Should not happen; just a sanity check for addr1 use */
553 dev_kfree_skb(skb);
554 return NETDEV_TX_OK;
555 }
556
557 ack = mac80211_hwsim_tx_frame(hw, skb);
558 if (ack && skb->len >= 16) {
559 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
560 mac80211_hwsim_monitor_ack(hw, hdr->addr2);
561 }
562
563 txi = IEEE80211_SKB_CB(skb);
564
565 if (txi->control.vif)
566 hwsim_check_magic(txi->control.vif);
567 if (txi->control.sta)
568 hwsim_check_sta_magic(txi->control.sta);
569
570 ieee80211_tx_info_clear_status(txi);
571 if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
572 txi->flags |= IEEE80211_TX_STAT_ACK;
573 ieee80211_tx_status_irqsafe(hw, skb);
574 return NETDEV_TX_OK;
575 }
576
577
578 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
579 {
580 struct mac80211_hwsim_data *data = hw->priv;
581 wiphy_debug(hw->wiphy, "%s\n", __func__);
582 data->started = 1;
583 return 0;
584 }
585
586
587 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
588 {
589 struct mac80211_hwsim_data *data = hw->priv;
590 data->started = 0;
591 del_timer(&data->beacon_timer);
592 wiphy_debug(hw->wiphy, "%s\n", __func__);
593 }
594
595
596 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
597 struct ieee80211_vif *vif)
598 {
599 wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
600 __func__, ieee80211_vif_type_p2p(vif),
601 vif->addr);
602 hwsim_set_magic(vif);
603 return 0;
604 }
605
606
607 static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
608 struct ieee80211_vif *vif,
609 enum nl80211_iftype newtype,
610 bool newp2p)
611 {
612 newtype = ieee80211_iftype_p2p(newtype, newp2p);
613 wiphy_debug(hw->wiphy,
614 "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
615 __func__, ieee80211_vif_type_p2p(vif),
616 newtype, vif->addr);
617 hwsim_check_magic(vif);
618
619 return 0;
620 }
621
622 static void mac80211_hwsim_remove_interface(
623 struct ieee80211_hw *hw, struct ieee80211_vif *vif)
624 {
625 wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
626 __func__, ieee80211_vif_type_p2p(vif),
627 vif->addr);
628 hwsim_check_magic(vif);
629 hwsim_clear_magic(vif);
630 }
631
632
633 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
634 struct ieee80211_vif *vif)
635 {
636 struct ieee80211_hw *hw = arg;
637 struct sk_buff *skb;
638 struct ieee80211_tx_info *info;
639
640 hwsim_check_magic(vif);
641
642 if (vif->type != NL80211_IFTYPE_AP &&
643 vif->type != NL80211_IFTYPE_MESH_POINT &&
644 vif->type != NL80211_IFTYPE_ADHOC)
645 return;
646
647 skb = ieee80211_beacon_get(hw, vif);
648 if (skb == NULL)
649 return;
650 info = IEEE80211_SKB_CB(skb);
651
652 mac80211_hwsim_monitor_rx(hw, skb);
653 mac80211_hwsim_tx_frame(hw, skb);
654 dev_kfree_skb(skb);
655 }
656
657
658 static void mac80211_hwsim_beacon(unsigned long arg)
659 {
660 struct ieee80211_hw *hw = (struct ieee80211_hw *) arg;
661 struct mac80211_hwsim_data *data = hw->priv;
662
663 if (!data->started)
664 return;
665
666 ieee80211_iterate_active_interfaces_atomic(
667 hw, mac80211_hwsim_beacon_tx, hw);
668
669 data->beacon_timer.expires = jiffies + data->beacon_int;
670 add_timer(&data->beacon_timer);
671 }
672
673 static const char *hwsim_chantypes[] = {
674 [NL80211_CHAN_NO_HT] = "noht",
675 [NL80211_CHAN_HT20] = "ht20",
676 [NL80211_CHAN_HT40MINUS] = "ht40-",
677 [NL80211_CHAN_HT40PLUS] = "ht40+",
678 };
679
680 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
681 {
682 struct mac80211_hwsim_data *data = hw->priv;
683 struct ieee80211_conf *conf = &hw->conf;
684 static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
685 [IEEE80211_SMPS_AUTOMATIC] = "auto",
686 [IEEE80211_SMPS_OFF] = "off",
687 [IEEE80211_SMPS_STATIC] = "static",
688 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
689 };
690
691 wiphy_debug(hw->wiphy,
692 "%s (freq=%d/%s idle=%d ps=%d smps=%s)\n",
693 __func__,
694 conf->channel->center_freq,
695 hwsim_chantypes[conf->channel_type],
696 !!(conf->flags & IEEE80211_CONF_IDLE),
697 !!(conf->flags & IEEE80211_CONF_PS),
698 smps_modes[conf->smps_mode]);
699
700 data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
701
702 data->channel = conf->channel;
703 data->power_level = conf->power_level;
704 if (!data->started || !data->beacon_int)
705 del_timer(&data->beacon_timer);
706 else
707 mod_timer(&data->beacon_timer, jiffies + data->beacon_int);
708
709 return 0;
710 }
711
712
713 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
714 unsigned int changed_flags,
715 unsigned int *total_flags,u64 multicast)
716 {
717 struct mac80211_hwsim_data *data = hw->priv;
718
719 wiphy_debug(hw->wiphy, "%s\n", __func__);
720
721 data->rx_filter = 0;
722 if (*total_flags & FIF_PROMISC_IN_BSS)
723 data->rx_filter |= FIF_PROMISC_IN_BSS;
724 if (*total_flags & FIF_ALLMULTI)
725 data->rx_filter |= FIF_ALLMULTI;
726
727 *total_flags = data->rx_filter;
728 }
729
730 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
731 struct ieee80211_vif *vif,
732 struct ieee80211_bss_conf *info,
733 u32 changed)
734 {
735 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
736 struct mac80211_hwsim_data *data = hw->priv;
737
738 hwsim_check_magic(vif);
739
740 wiphy_debug(hw->wiphy, "%s(changed=0x%x)\n", __func__, changed);
741
742 if (changed & BSS_CHANGED_BSSID) {
743 wiphy_debug(hw->wiphy, "%s: BSSID changed: %pM\n",
744 __func__, info->bssid);
745 memcpy(vp->bssid, info->bssid, ETH_ALEN);
746 }
747
748 if (changed & BSS_CHANGED_ASSOC) {
749 wiphy_debug(hw->wiphy, " ASSOC: assoc=%d aid=%d\n",
750 info->assoc, info->aid);
751 vp->assoc = info->assoc;
752 vp->aid = info->aid;
753 }
754
755 if (changed & BSS_CHANGED_BEACON_INT) {
756 wiphy_debug(hw->wiphy, " BCNINT: %d\n", info->beacon_int);
757 data->beacon_int = 1024 * info->beacon_int / 1000 * HZ / 1000;
758 if (WARN_ON(!data->beacon_int))
759 data->beacon_int = 1;
760 if (data->started)
761 mod_timer(&data->beacon_timer,
762 jiffies + data->beacon_int);
763 }
764
765 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
766 wiphy_debug(hw->wiphy, " ERP_CTS_PROT: %d\n",
767 info->use_cts_prot);
768 }
769
770 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
771 wiphy_debug(hw->wiphy, " ERP_PREAMBLE: %d\n",
772 info->use_short_preamble);
773 }
774
775 if (changed & BSS_CHANGED_ERP_SLOT) {
776 wiphy_debug(hw->wiphy, " ERP_SLOT: %d\n", info->use_short_slot);
777 }
778
779 if (changed & BSS_CHANGED_HT) {
780 wiphy_debug(hw->wiphy, " HT: op_mode=0x%x, chantype=%s\n",
781 info->ht_operation_mode,
782 hwsim_chantypes[info->channel_type]);
783 }
784
785 if (changed & BSS_CHANGED_BASIC_RATES) {
786 wiphy_debug(hw->wiphy, " BASIC_RATES: 0x%llx\n",
787 (unsigned long long) info->basic_rates);
788 }
789 }
790
791 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
792 struct ieee80211_vif *vif,
793 struct ieee80211_sta *sta)
794 {
795 hwsim_check_magic(vif);
796 hwsim_set_sta_magic(sta);
797
798 return 0;
799 }
800
801 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
802 struct ieee80211_vif *vif,
803 struct ieee80211_sta *sta)
804 {
805 hwsim_check_magic(vif);
806 hwsim_clear_sta_magic(sta);
807
808 return 0;
809 }
810
811 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
812 struct ieee80211_vif *vif,
813 enum sta_notify_cmd cmd,
814 struct ieee80211_sta *sta)
815 {
816 hwsim_check_magic(vif);
817
818 switch (cmd) {
819 case STA_NOTIFY_SLEEP:
820 case STA_NOTIFY_AWAKE:
821 /* TODO: make good use of these flags */
822 break;
823 default:
824 WARN(1, "Invalid sta notify: %d\n", cmd);
825 break;
826 }
827 }
828
829 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
830 struct ieee80211_sta *sta,
831 bool set)
832 {
833 hwsim_check_sta_magic(sta);
834 return 0;
835 }
836
837 static int mac80211_hwsim_conf_tx(
838 struct ieee80211_hw *hw, u16 queue,
839 const struct ieee80211_tx_queue_params *params)
840 {
841 wiphy_debug(hw->wiphy,
842 "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
843 __func__, queue,
844 params->txop, params->cw_min,
845 params->cw_max, params->aifs);
846 return 0;
847 }
848
849 static int mac80211_hwsim_get_survey(
850 struct ieee80211_hw *hw, int idx,
851 struct survey_info *survey)
852 {
853 struct ieee80211_conf *conf = &hw->conf;
854
855 wiphy_debug(hw->wiphy, "%s (idx=%d)\n", __func__, idx);
856
857 if (idx != 0)
858 return -ENOENT;
859
860 /* Current channel */
861 survey->channel = conf->channel;
862
863 /*
864 * Magically conjured noise level --- this is only ok for simulated hardware.
865 *
866 * A real driver which cannot determine the real channel noise MUST NOT
867 * report any noise, especially not a magically conjured one :-)
868 */
869 survey->filled = SURVEY_INFO_NOISE_DBM;
870 survey->noise = -92;
871
872 return 0;
873 }
874
875 #ifdef CONFIG_NL80211_TESTMODE
876 /*
877 * This section contains example code for using netlink
878 * attributes with the testmode command in nl80211.
879 */
880
881 /* These enums need to be kept in sync with userspace */
882 enum hwsim_testmode_attr {
883 __HWSIM_TM_ATTR_INVALID = 0,
884 HWSIM_TM_ATTR_CMD = 1,
885 HWSIM_TM_ATTR_PS = 2,
886
887 /* keep last */
888 __HWSIM_TM_ATTR_AFTER_LAST,
889 HWSIM_TM_ATTR_MAX = __HWSIM_TM_ATTR_AFTER_LAST - 1
890 };
891
892 enum hwsim_testmode_cmd {
893 HWSIM_TM_CMD_SET_PS = 0,
894 HWSIM_TM_CMD_GET_PS = 1,
895 };
896
897 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
898 [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
899 [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
900 };
901
902 static int hwsim_fops_ps_write(void *dat, u64 val);
903
904 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
905 void *data, int len)
906 {
907 struct mac80211_hwsim_data *hwsim = hw->priv;
908 struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
909 struct sk_buff *skb;
910 int err, ps;
911
912 err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
913 hwsim_testmode_policy);
914 if (err)
915 return err;
916
917 if (!tb[HWSIM_TM_ATTR_CMD])
918 return -EINVAL;
919
920 switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
921 case HWSIM_TM_CMD_SET_PS:
922 if (!tb[HWSIM_TM_ATTR_PS])
923 return -EINVAL;
924 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
925 return hwsim_fops_ps_write(hwsim, ps);
926 case HWSIM_TM_CMD_GET_PS:
927 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
928 nla_total_size(sizeof(u32)));
929 if (!skb)
930 return -ENOMEM;
931 NLA_PUT_U32(skb, HWSIM_TM_ATTR_PS, hwsim->ps);
932 return cfg80211_testmode_reply(skb);
933 default:
934 return -EOPNOTSUPP;
935 }
936
937 nla_put_failure:
938 kfree_skb(skb);
939 return -ENOBUFS;
940 }
941 #endif
942
943 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
944 struct ieee80211_vif *vif,
945 enum ieee80211_ampdu_mlme_action action,
946 struct ieee80211_sta *sta, u16 tid, u16 *ssn)
947 {
948 switch (action) {
949 case IEEE80211_AMPDU_TX_START:
950 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
951 break;
952 case IEEE80211_AMPDU_TX_STOP:
953 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
954 break;
955 case IEEE80211_AMPDU_TX_OPERATIONAL:
956 break;
957 case IEEE80211_AMPDU_RX_START:
958 case IEEE80211_AMPDU_RX_STOP:
959 break;
960 default:
961 return -EOPNOTSUPP;
962 }
963
964 return 0;
965 }
966
967 static void mac80211_hwsim_flush(struct ieee80211_hw *hw, bool drop)
968 {
969 /*
970 * In this special case, there's nothing we need to
971 * do because hwsim does transmission synchronously.
972 * In the future, when it does transmissions via
973 * userspace, we may need to do something.
974 */
975 }
976
977 struct hw_scan_done {
978 struct delayed_work w;
979 struct ieee80211_hw *hw;
980 };
981
982 static void hw_scan_done(struct work_struct *work)
983 {
984 struct hw_scan_done *hsd =
985 container_of(work, struct hw_scan_done, w.work);
986
987 ieee80211_scan_completed(hsd->hw, false);
988 kfree(hsd);
989 }
990
991 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
992 struct ieee80211_vif *vif,
993 struct cfg80211_scan_request *req)
994 {
995 struct hw_scan_done *hsd = kzalloc(sizeof(*hsd), GFP_KERNEL);
996 int i;
997
998 if (!hsd)
999 return -ENOMEM;
1000
1001 hsd->hw = hw;
1002 INIT_DELAYED_WORK(&hsd->w, hw_scan_done);
1003
1004 printk(KERN_DEBUG "hwsim hw_scan request\n");
1005 for (i = 0; i < req->n_channels; i++)
1006 printk(KERN_DEBUG "hwsim hw_scan freq %d\n",
1007 req->channels[i]->center_freq);
1008
1009 ieee80211_queue_delayed_work(hw, &hsd->w, 2 * HZ);
1010
1011 return 0;
1012 }
1013
1014 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw)
1015 {
1016 struct mac80211_hwsim_data *hwsim = hw->priv;
1017
1018 mutex_lock(&hwsim->mutex);
1019
1020 if (hwsim->scanning) {
1021 printk(KERN_DEBUG "two hwsim sw_scans detected!\n");
1022 goto out;
1023 }
1024
1025 printk(KERN_DEBUG "hwsim sw_scan request, prepping stuff\n");
1026 hwsim->scanning = true;
1027
1028 out:
1029 mutex_unlock(&hwsim->mutex);
1030 }
1031
1032 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw)
1033 {
1034 struct mac80211_hwsim_data *hwsim = hw->priv;
1035
1036 mutex_lock(&hwsim->mutex);
1037
1038 printk(KERN_DEBUG "hwsim sw_scan_complete\n");
1039 hwsim->scanning = false;
1040
1041 mutex_unlock(&hwsim->mutex);
1042 }
1043
1044 static struct ieee80211_ops mac80211_hwsim_ops =
1045 {
1046 .tx = mac80211_hwsim_tx,
1047 .start = mac80211_hwsim_start,
1048 .stop = mac80211_hwsim_stop,
1049 .add_interface = mac80211_hwsim_add_interface,
1050 .change_interface = mac80211_hwsim_change_interface,
1051 .remove_interface = mac80211_hwsim_remove_interface,
1052 .config = mac80211_hwsim_config,
1053 .configure_filter = mac80211_hwsim_configure_filter,
1054 .bss_info_changed = mac80211_hwsim_bss_info_changed,
1055 .sta_add = mac80211_hwsim_sta_add,
1056 .sta_remove = mac80211_hwsim_sta_remove,
1057 .sta_notify = mac80211_hwsim_sta_notify,
1058 .set_tim = mac80211_hwsim_set_tim,
1059 .conf_tx = mac80211_hwsim_conf_tx,
1060 .get_survey = mac80211_hwsim_get_survey,
1061 CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)
1062 .ampdu_action = mac80211_hwsim_ampdu_action,
1063 .sw_scan_start = mac80211_hwsim_sw_scan,
1064 .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
1065 .flush = mac80211_hwsim_flush,
1066 };
1067
1068
1069 static void mac80211_hwsim_free(void)
1070 {
1071 struct list_head tmplist, *i, *tmp;
1072 struct mac80211_hwsim_data *data, *tmpdata;
1073
1074 INIT_LIST_HEAD(&tmplist);
1075
1076 spin_lock_bh(&hwsim_radio_lock);
1077 list_for_each_safe(i, tmp, &hwsim_radios)
1078 list_move(i, &tmplist);
1079 spin_unlock_bh(&hwsim_radio_lock);
1080
1081 list_for_each_entry_safe(data, tmpdata, &tmplist, list) {
1082 debugfs_remove(data->debugfs_group);
1083 debugfs_remove(data->debugfs_ps);
1084 debugfs_remove(data->debugfs);
1085 ieee80211_unregister_hw(data->hw);
1086 device_unregister(data->dev);
1087 ieee80211_free_hw(data->hw);
1088 }
1089 class_destroy(hwsim_class);
1090 }
1091
1092
1093 static struct device_driver mac80211_hwsim_driver = {
1094 .name = "mac80211_hwsim"
1095 };
1096
1097 static const struct net_device_ops hwsim_netdev_ops = {
1098 .ndo_start_xmit = hwsim_mon_xmit,
1099 .ndo_change_mtu = eth_change_mtu,
1100 .ndo_set_mac_address = eth_mac_addr,
1101 .ndo_validate_addr = eth_validate_addr,
1102 };
1103
1104 static void hwsim_mon_setup(struct net_device *dev)
1105 {
1106 dev->netdev_ops = &hwsim_netdev_ops;
1107 dev->destructor = free_netdev;
1108 ether_setup(dev);
1109 dev->tx_queue_len = 0;
1110 dev->type = ARPHRD_IEEE80211_RADIOTAP;
1111 memset(dev->dev_addr, 0, ETH_ALEN);
1112 dev->dev_addr[0] = 0x12;
1113 }
1114
1115
1116 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
1117 {
1118 struct mac80211_hwsim_data *data = dat;
1119 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1120 struct sk_buff *skb;
1121 struct ieee80211_pspoll *pspoll;
1122
1123 if (!vp->assoc)
1124 return;
1125
1126 wiphy_debug(data->hw->wiphy,
1127 "%s: send PS-Poll to %pM for aid %d\n",
1128 __func__, vp->bssid, vp->aid);
1129
1130 skb = dev_alloc_skb(sizeof(*pspoll));
1131 if (!skb)
1132 return;
1133 pspoll = (void *) skb_put(skb, sizeof(*pspoll));
1134 pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
1135 IEEE80211_STYPE_PSPOLL |
1136 IEEE80211_FCTL_PM);
1137 pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
1138 memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
1139 memcpy(pspoll->ta, mac, ETH_ALEN);
1140 if (!mac80211_hwsim_tx_frame(data->hw, skb))
1141 printk(KERN_DEBUG "%s: PS-Poll frame not ack'ed\n", __func__);
1142 dev_kfree_skb(skb);
1143 }
1144
1145
1146 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
1147 struct ieee80211_vif *vif, int ps)
1148 {
1149 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1150 struct sk_buff *skb;
1151 struct ieee80211_hdr *hdr;
1152
1153 if (!vp->assoc)
1154 return;
1155
1156 wiphy_debug(data->hw->wiphy,
1157 "%s: send data::nullfunc to %pM ps=%d\n",
1158 __func__, vp->bssid, ps);
1159
1160 skb = dev_alloc_skb(sizeof(*hdr));
1161 if (!skb)
1162 return;
1163 hdr = (void *) skb_put(skb, sizeof(*hdr) - ETH_ALEN);
1164 hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
1165 IEEE80211_STYPE_NULLFUNC |
1166 (ps ? IEEE80211_FCTL_PM : 0));
1167 hdr->duration_id = cpu_to_le16(0);
1168 memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
1169 memcpy(hdr->addr2, mac, ETH_ALEN);
1170 memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
1171 if (!mac80211_hwsim_tx_frame(data->hw, skb))
1172 printk(KERN_DEBUG "%s: nullfunc frame not ack'ed\n", __func__);
1173 dev_kfree_skb(skb);
1174 }
1175
1176
1177 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
1178 struct ieee80211_vif *vif)
1179 {
1180 struct mac80211_hwsim_data *data = dat;
1181 hwsim_send_nullfunc(data, mac, vif, 1);
1182 }
1183
1184
1185 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
1186 struct ieee80211_vif *vif)
1187 {
1188 struct mac80211_hwsim_data *data = dat;
1189 hwsim_send_nullfunc(data, mac, vif, 0);
1190 }
1191
1192
1193 static int hwsim_fops_ps_read(void *dat, u64 *val)
1194 {
1195 struct mac80211_hwsim_data *data = dat;
1196 *val = data->ps;
1197 return 0;
1198 }
1199
1200 static int hwsim_fops_ps_write(void *dat, u64 val)
1201 {
1202 struct mac80211_hwsim_data *data = dat;
1203 enum ps_mode old_ps;
1204
1205 if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
1206 val != PS_MANUAL_POLL)
1207 return -EINVAL;
1208
1209 old_ps = data->ps;
1210 data->ps = val;
1211
1212 if (val == PS_MANUAL_POLL) {
1213 ieee80211_iterate_active_interfaces(data->hw,
1214 hwsim_send_ps_poll, data);
1215 data->ps_poll_pending = true;
1216 } else if (old_ps == PS_DISABLED && val != PS_DISABLED) {
1217 ieee80211_iterate_active_interfaces(data->hw,
1218 hwsim_send_nullfunc_ps,
1219 data);
1220 } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
1221 ieee80211_iterate_active_interfaces(data->hw,
1222 hwsim_send_nullfunc_no_ps,
1223 data);
1224 }
1225
1226 return 0;
1227 }
1228
1229 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
1230 "%llu\n");
1231
1232
1233 static int hwsim_fops_group_read(void *dat, u64 *val)
1234 {
1235 struct mac80211_hwsim_data *data = dat;
1236 *val = data->group;
1237 return 0;
1238 }
1239
1240 static int hwsim_fops_group_write(void *dat, u64 val)
1241 {
1242 struct mac80211_hwsim_data *data = dat;
1243 data->group = val;
1244 return 0;
1245 }
1246
1247 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
1248 hwsim_fops_group_read, hwsim_fops_group_write,
1249 "%llx\n");
1250
1251 static int __init init_mac80211_hwsim(void)
1252 {
1253 int i, err = 0;
1254 u8 addr[ETH_ALEN];
1255 struct mac80211_hwsim_data *data;
1256 struct ieee80211_hw *hw;
1257 enum ieee80211_band band;
1258
1259 if (radios < 1 || radios > 100)
1260 return -EINVAL;
1261
1262 if (fake_hw_scan) {
1263 mac80211_hwsim_ops.hw_scan = mac80211_hwsim_hw_scan;
1264 mac80211_hwsim_ops.sw_scan_start = NULL;
1265 mac80211_hwsim_ops.sw_scan_complete = NULL;
1266 }
1267
1268 spin_lock_init(&hwsim_radio_lock);
1269 INIT_LIST_HEAD(&hwsim_radios);
1270
1271 hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
1272 if (IS_ERR(hwsim_class))
1273 return PTR_ERR(hwsim_class);
1274
1275 memset(addr, 0, ETH_ALEN);
1276 addr[0] = 0x02;
1277
1278 for (i = 0; i < radios; i++) {
1279 printk(KERN_DEBUG "mac80211_hwsim: Initializing radio %d\n",
1280 i);
1281 hw = ieee80211_alloc_hw(sizeof(*data), &mac80211_hwsim_ops);
1282 if (!hw) {
1283 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw "
1284 "failed\n");
1285 err = -ENOMEM;
1286 goto failed;
1287 }
1288 data = hw->priv;
1289 data->hw = hw;
1290
1291 data->dev = device_create(hwsim_class, NULL, 0, hw,
1292 "hwsim%d", i);
1293 if (IS_ERR(data->dev)) {
1294 printk(KERN_DEBUG
1295 "mac80211_hwsim: device_create "
1296 "failed (%ld)\n", PTR_ERR(data->dev));
1297 err = -ENOMEM;
1298 goto failed_drvdata;
1299 }
1300 data->dev->driver = &mac80211_hwsim_driver;
1301
1302 SET_IEEE80211_DEV(hw, data->dev);
1303 addr[3] = i >> 8;
1304 addr[4] = i;
1305 memcpy(data->addresses[0].addr, addr, ETH_ALEN);
1306 memcpy(data->addresses[1].addr, addr, ETH_ALEN);
1307 data->addresses[1].addr[0] |= 0x40;
1308 hw->wiphy->n_addresses = 2;
1309 hw->wiphy->addresses = data->addresses;
1310
1311 if (fake_hw_scan) {
1312 hw->wiphy->max_scan_ssids = 255;
1313 hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
1314 }
1315
1316 hw->channel_change_time = 1;
1317 hw->queues = 4;
1318 hw->wiphy->interface_modes =
1319 BIT(NL80211_IFTYPE_STATION) |
1320 BIT(NL80211_IFTYPE_AP) |
1321 BIT(NL80211_IFTYPE_P2P_CLIENT) |
1322 BIT(NL80211_IFTYPE_P2P_GO) |
1323 BIT(NL80211_IFTYPE_ADHOC) |
1324 BIT(NL80211_IFTYPE_MESH_POINT);
1325
1326 hw->flags = IEEE80211_HW_MFP_CAPABLE |
1327 IEEE80211_HW_SIGNAL_DBM |
1328 IEEE80211_HW_SUPPORTS_STATIC_SMPS |
1329 IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
1330 IEEE80211_HW_AMPDU_AGGREGATION;
1331
1332 /* ask mac80211 to reserve space for magic */
1333 hw->vif_data_size = sizeof(struct hwsim_vif_priv);
1334 hw->sta_data_size = sizeof(struct hwsim_sta_priv);
1335
1336 memcpy(data->channels_2ghz, hwsim_channels_2ghz,
1337 sizeof(hwsim_channels_2ghz));
1338 memcpy(data->channels_5ghz, hwsim_channels_5ghz,
1339 sizeof(hwsim_channels_5ghz));
1340 memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
1341
1342 for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) {
1343 struct ieee80211_supported_band *sband = &data->bands[band];
1344 switch (band) {
1345 case IEEE80211_BAND_2GHZ:
1346 sband->channels = data->channels_2ghz;
1347 sband->n_channels =
1348 ARRAY_SIZE(hwsim_channels_2ghz);
1349 sband->bitrates = data->rates;
1350 sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
1351 break;
1352 case IEEE80211_BAND_5GHZ:
1353 sband->channels = data->channels_5ghz;
1354 sband->n_channels =
1355 ARRAY_SIZE(hwsim_channels_5ghz);
1356 sband->bitrates = data->rates + 4;
1357 sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
1358 break;
1359 default:
1360 break;
1361 }
1362
1363 sband->ht_cap.ht_supported = true;
1364 sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
1365 IEEE80211_HT_CAP_GRN_FLD |
1366 IEEE80211_HT_CAP_SGI_40 |
1367 IEEE80211_HT_CAP_DSSSCCK40;
1368 sband->ht_cap.ampdu_factor = 0x3;
1369 sband->ht_cap.ampdu_density = 0x6;
1370 memset(&sband->ht_cap.mcs, 0,
1371 sizeof(sband->ht_cap.mcs));
1372 sband->ht_cap.mcs.rx_mask[0] = 0xff;
1373 sband->ht_cap.mcs.rx_mask[1] = 0xff;
1374 sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
1375
1376 hw->wiphy->bands[band] = sband;
1377 }
1378 /* By default all radios are belonging to the first group */
1379 data->group = 1;
1380 mutex_init(&data->mutex);
1381
1382 /* Work to be done prior to ieee80211_register_hw() */
1383 switch (regtest) {
1384 case HWSIM_REGTEST_DISABLED:
1385 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
1386 case HWSIM_REGTEST_DRIVER_REG_ALL:
1387 case HWSIM_REGTEST_DIFF_COUNTRY:
1388 /*
1389 * Nothing to be done for driver regulatory domain
1390 * hints prior to ieee80211_register_hw()
1391 */
1392 break;
1393 case HWSIM_REGTEST_WORLD_ROAM:
1394 if (i == 0) {
1395 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1396 wiphy_apply_custom_regulatory(hw->wiphy,
1397 &hwsim_world_regdom_custom_01);
1398 }
1399 break;
1400 case HWSIM_REGTEST_CUSTOM_WORLD:
1401 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1402 wiphy_apply_custom_regulatory(hw->wiphy,
1403 &hwsim_world_regdom_custom_01);
1404 break;
1405 case HWSIM_REGTEST_CUSTOM_WORLD_2:
1406 if (i == 0) {
1407 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1408 wiphy_apply_custom_regulatory(hw->wiphy,
1409 &hwsim_world_regdom_custom_01);
1410 } else if (i == 1) {
1411 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1412 wiphy_apply_custom_regulatory(hw->wiphy,
1413 &hwsim_world_regdom_custom_02);
1414 }
1415 break;
1416 case HWSIM_REGTEST_STRICT_ALL:
1417 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1418 break;
1419 case HWSIM_REGTEST_STRICT_FOLLOW:
1420 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
1421 if (i == 0)
1422 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1423 break;
1424 case HWSIM_REGTEST_ALL:
1425 if (i == 0) {
1426 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1427 wiphy_apply_custom_regulatory(hw->wiphy,
1428 &hwsim_world_regdom_custom_01);
1429 } else if (i == 1) {
1430 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1431 wiphy_apply_custom_regulatory(hw->wiphy,
1432 &hwsim_world_regdom_custom_02);
1433 } else if (i == 4)
1434 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1435 break;
1436 default:
1437 break;
1438 }
1439
1440 /* give the regulatory workqueue a chance to run */
1441 if (regtest)
1442 schedule_timeout_interruptible(1);
1443 err = ieee80211_register_hw(hw);
1444 if (err < 0) {
1445 printk(KERN_DEBUG "mac80211_hwsim: "
1446 "ieee80211_register_hw failed (%d)\n", err);
1447 goto failed_hw;
1448 }
1449
1450 /* Work to be done after to ieee80211_register_hw() */
1451 switch (regtest) {
1452 case HWSIM_REGTEST_WORLD_ROAM:
1453 case HWSIM_REGTEST_DISABLED:
1454 break;
1455 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
1456 if (!i)
1457 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1458 break;
1459 case HWSIM_REGTEST_DRIVER_REG_ALL:
1460 case HWSIM_REGTEST_STRICT_ALL:
1461 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1462 break;
1463 case HWSIM_REGTEST_DIFF_COUNTRY:
1464 if (i < ARRAY_SIZE(hwsim_alpha2s))
1465 regulatory_hint(hw->wiphy, hwsim_alpha2s[i]);
1466 break;
1467 case HWSIM_REGTEST_CUSTOM_WORLD:
1468 case HWSIM_REGTEST_CUSTOM_WORLD_2:
1469 /*
1470 * Nothing to be done for custom world regulatory
1471 * domains after to ieee80211_register_hw
1472 */
1473 break;
1474 case HWSIM_REGTEST_STRICT_FOLLOW:
1475 if (i == 0)
1476 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1477 break;
1478 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
1479 if (i == 0)
1480 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1481 else if (i == 1)
1482 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
1483 break;
1484 case HWSIM_REGTEST_ALL:
1485 if (i == 2)
1486 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1487 else if (i == 3)
1488 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
1489 else if (i == 4)
1490 regulatory_hint(hw->wiphy, hwsim_alpha2s[2]);
1491 break;
1492 default:
1493 break;
1494 }
1495
1496 wiphy_debug(hw->wiphy, "hwaddr %pm registered\n",
1497 hw->wiphy->perm_addr);
1498
1499 data->debugfs = debugfs_create_dir("hwsim",
1500 hw->wiphy->debugfsdir);
1501 data->debugfs_ps = debugfs_create_file("ps", 0666,
1502 data->debugfs, data,
1503 &hwsim_fops_ps);
1504 data->debugfs_group = debugfs_create_file("group", 0666,
1505 data->debugfs, data,
1506 &hwsim_fops_group);
1507
1508 setup_timer(&data->beacon_timer, mac80211_hwsim_beacon,
1509 (unsigned long) hw);
1510
1511 list_add_tail(&data->list, &hwsim_radios);
1512 }
1513
1514 hwsim_mon = alloc_netdev(0, "hwsim%d", hwsim_mon_setup);
1515 if (hwsim_mon == NULL)
1516 goto failed;
1517
1518 rtnl_lock();
1519
1520 err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
1521 if (err < 0)
1522 goto failed_mon;
1523
1524
1525 err = register_netdevice(hwsim_mon);
1526 if (err < 0)
1527 goto failed_mon;
1528
1529 rtnl_unlock();
1530
1531 return 0;
1532
1533 failed_mon:
1534 rtnl_unlock();
1535 free_netdev(hwsim_mon);
1536 mac80211_hwsim_free();
1537 return err;
1538
1539 failed_hw:
1540 device_unregister(data->dev);
1541 failed_drvdata:
1542 ieee80211_free_hw(hw);
1543 failed:
1544 mac80211_hwsim_free();
1545 return err;
1546 }
1547
1548
1549 static void __exit exit_mac80211_hwsim(void)
1550 {
1551 printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
1552
1553 mac80211_hwsim_free();
1554 unregister_netdev(hwsim_mon);
1555 }
1556
1557
1558 module_init(init_mac80211_hwsim);
1559 module_exit(exit_mac80211_hwsim);
linux-next