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USB: gadget: section mismatch warning fixed
[linux/fpc-iii.git] / drivers / net / wireless / mac80211_hwsim.c
blob01ad7f77383a8f18a58a69dc6648ba907618e069
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/slab.h>
18 #include <linux/spinlock.h>
19 #include <net/dst.h>
20 #include <net/xfrm.h>
21 #include <net/mac80211.h>
22 #include <net/ieee80211_radiotap.h>
23 #include <linux/if_arp.h>
24 #include <linux/rtnetlink.h>
25 #include <linux/etherdevice.h>
26 #include <linux/debugfs.h>
27
28 MODULE_AUTHOR("Jouni Malinen");
29 MODULE_DESCRIPTION("Software simulator of 802.11 radio(s) for mac80211");
30 MODULE_LICENSE("GPL");
31
32 static int radios = 2;
33 module_param(radios, int, 0444);
34 MODULE_PARM_DESC(radios, "Number of simulated radios");
35
36 static bool fake_hw_scan;
37 module_param(fake_hw_scan, bool, 0444);
38 MODULE_PARM_DESC(fake_hw_scan, "Install fake (no-op) hw-scan handler");
39
40 /**
41 * enum hwsim_regtest - the type of regulatory tests we offer
42 *
43 * These are the different values you can use for the regtest
44 * module parameter. This is useful to help test world roaming
45 * and the driver regulatory_hint() call and combinations of these.
46 * If you want to do specific alpha2 regulatory domain tests simply
47 * use the userspace regulatory request as that will be respected as
48 * well without the need of this module parameter. This is designed
49 * only for testing the driver regulatory request, world roaming
50 * and all possible combinations.
51 *
52 * @HWSIM_REGTEST_DISABLED: No regulatory tests are performed,
53 * this is the default value.
54 * @HWSIM_REGTEST_DRIVER_REG_FOLLOW: Used for testing the driver regulatory
55 * hint, only one driver regulatory hint will be sent as such the
56 * secondary radios are expected to follow.
57 * @HWSIM_REGTEST_DRIVER_REG_ALL: Used for testing the driver regulatory
58 * request with all radios reporting the same regulatory domain.
59 * @HWSIM_REGTEST_DIFF_COUNTRY: Used for testing the drivers calling
60 * different regulatory domains requests. Expected behaviour is for
61 * an intersection to occur but each device will still use their
62 * respective regulatory requested domains. Subsequent radios will
63 * use the resulting intersection.
64 * @HWSIM_REGTEST_WORLD_ROAM: Used for testing the world roaming. We acomplish
65 * this by using a custom beacon-capable regulatory domain for the first
66 * radio. All other device world roam.
67 * @HWSIM_REGTEST_CUSTOM_WORLD: Used for testing the custom world regulatory
68 * domain requests. All radios will adhere to this custom world regulatory
69 * domain.
70 * @HWSIM_REGTEST_CUSTOM_WORLD_2: Used for testing 2 custom world regulatory
71 * domain requests. The first radio will adhere to the first custom world
72 * regulatory domain, the second one to the second custom world regulatory
73 * domain. All other devices will world roam.
74 * @HWSIM_REGTEST_STRICT_FOLLOW_: Used for testing strict regulatory domain
75 * settings, only the first radio will send a regulatory domain request
76 * and use strict settings. The rest of the radios are expected to follow.
77 * @HWSIM_REGTEST_STRICT_ALL: Used for testing strict regulatory domain
78 * settings. All radios will adhere to this.
79 * @HWSIM_REGTEST_STRICT_AND_DRIVER_REG: Used for testing strict regulatory
80 * domain settings, combined with secondary driver regulatory domain
81 * settings. The first radio will get a strict regulatory domain setting
82 * using the first driver regulatory request and the second radio will use
83 * non-strict settings using the second driver regulatory request. All
84 * other devices should follow the intersection created between the
85 * first two.
86 * @HWSIM_REGTEST_ALL: Used for testing every possible mix. You will need
87 * at least 6 radios for a complete test. We will test in this order:
88 * 1 - driver custom world regulatory domain
89 * 2 - second custom world regulatory domain
90 * 3 - first driver regulatory domain request
91 * 4 - second driver regulatory domain request
92 * 5 - strict regulatory domain settings using the third driver regulatory
93 * domain request
94 * 6 and on - should follow the intersection of the 3rd, 4rth and 5th radio
95 * regulatory requests.
96 */
97 enum hwsim_regtest {
98 HWSIM_REGTEST_DISABLED = 0,
99 HWSIM_REGTEST_DRIVER_REG_FOLLOW = 1,
100 HWSIM_REGTEST_DRIVER_REG_ALL = 2,
101 HWSIM_REGTEST_DIFF_COUNTRY = 3,
102 HWSIM_REGTEST_WORLD_ROAM = 4,
103 HWSIM_REGTEST_CUSTOM_WORLD = 5,
104 HWSIM_REGTEST_CUSTOM_WORLD_2 = 6,
105 HWSIM_REGTEST_STRICT_FOLLOW = 7,
106 HWSIM_REGTEST_STRICT_ALL = 8,
107 HWSIM_REGTEST_STRICT_AND_DRIVER_REG = 9,
108 HWSIM_REGTEST_ALL = 10,
109 };
110
111 /* Set to one of the HWSIM_REGTEST_* values above */
112 static int regtest = HWSIM_REGTEST_DISABLED;
113 module_param(regtest, int, 0444);
114 MODULE_PARM_DESC(regtest, "The type of regulatory test we want to run");
115
116 static const char *hwsim_alpha2s[] = {
117 "FI",
118 "AL",
119 "US",
120 "DE",
121 "JP",
122 "AL",
123 };
124
125 static const struct ieee80211_regdomain hwsim_world_regdom_custom_01 = {
126 .n_reg_rules = 4,
127 .alpha2 = "99",
128 .reg_rules = {
129 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
130 REG_RULE(2484-10, 2484+10, 40, 0, 20, 0),
131 REG_RULE(5150-10, 5240+10, 40, 0, 30, 0),
132 REG_RULE(5745-10, 5825+10, 40, 0, 30, 0),
133 }
134 };
135
136 static const struct ieee80211_regdomain hwsim_world_regdom_custom_02 = {
137 .n_reg_rules = 2,
138 .alpha2 = "99",
139 .reg_rules = {
140 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
141 REG_RULE(5725-10, 5850+10, 40, 0, 30,
142 NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS),
143 }
144 };
145
146 struct hwsim_vif_priv {
147 u32 magic;
148 u8 bssid[ETH_ALEN];
149 bool assoc;
150 u16 aid;
151 };
152
153 #define HWSIM_VIF_MAGIC 0x69537748
154
155 static inline void hwsim_check_magic(struct ieee80211_vif *vif)
156 {
157 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
158 WARN_ON(vp->magic != HWSIM_VIF_MAGIC);
159 }
160
161 static inline void hwsim_set_magic(struct ieee80211_vif *vif)
162 {
163 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
164 vp->magic = HWSIM_VIF_MAGIC;
165 }
166
167 static inline void hwsim_clear_magic(struct ieee80211_vif *vif)
168 {
169 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
170 vp->magic = 0;
171 }
172
173 struct hwsim_sta_priv {
174 u32 magic;
175 };
176
177 #define HWSIM_STA_MAGIC 0x6d537748
178
179 static inline void hwsim_check_sta_magic(struct ieee80211_sta *sta)
180 {
181 struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
182 WARN_ON(sp->magic != HWSIM_STA_MAGIC);
183 }
184
185 static inline void hwsim_set_sta_magic(struct ieee80211_sta *sta)
186 {
187 struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
188 sp->magic = HWSIM_STA_MAGIC;
189 }
190
191 static inline void hwsim_clear_sta_magic(struct ieee80211_sta *sta)
192 {
193 struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
194 sp->magic = 0;
195 }
196
197 static struct class *hwsim_class;
198
199 static struct net_device *hwsim_mon; /* global monitor netdev */
200
201 #define CHAN2G(_freq) { \
202 .band = IEEE80211_BAND_2GHZ, \
203 .center_freq = (_freq), \
204 .hw_value = (_freq), \
205 .max_power = 20, \
206 }
207
208 #define CHAN5G(_freq) { \
209 .band = IEEE80211_BAND_5GHZ, \
210 .center_freq = (_freq), \
211 .hw_value = (_freq), \
212 .max_power = 20, \
213 }
214
215 static const struct ieee80211_channel hwsim_channels_2ghz[] = {
216 CHAN2G(2412), /* Channel 1 */
217 CHAN2G(2417), /* Channel 2 */
218 CHAN2G(2422), /* Channel 3 */
219 CHAN2G(2427), /* Channel 4 */
220 CHAN2G(2432), /* Channel 5 */
221 CHAN2G(2437), /* Channel 6 */
222 CHAN2G(2442), /* Channel 7 */
223 CHAN2G(2447), /* Channel 8 */
224 CHAN2G(2452), /* Channel 9 */
225 CHAN2G(2457), /* Channel 10 */
226 CHAN2G(2462), /* Channel 11 */
227 CHAN2G(2467), /* Channel 12 */
228 CHAN2G(2472), /* Channel 13 */
229 CHAN2G(2484), /* Channel 14 */
230 };
231
232 static const struct ieee80211_channel hwsim_channels_5ghz[] = {
233 CHAN5G(5180), /* Channel 36 */
234 CHAN5G(5200), /* Channel 40 */
235 CHAN5G(5220), /* Channel 44 */
236 CHAN5G(5240), /* Channel 48 */
237
238 CHAN5G(5260), /* Channel 52 */
239 CHAN5G(5280), /* Channel 56 */
240 CHAN5G(5300), /* Channel 60 */
241 CHAN5G(5320), /* Channel 64 */
242
243 CHAN5G(5500), /* Channel 100 */
244 CHAN5G(5520), /* Channel 104 */
245 CHAN5G(5540), /* Channel 108 */
246 CHAN5G(5560), /* Channel 112 */
247 CHAN5G(5580), /* Channel 116 */
248 CHAN5G(5600), /* Channel 120 */
249 CHAN5G(5620), /* Channel 124 */
250 CHAN5G(5640), /* Channel 128 */
251 CHAN5G(5660), /* Channel 132 */
252 CHAN5G(5680), /* Channel 136 */
253 CHAN5G(5700), /* Channel 140 */
254
255 CHAN5G(5745), /* Channel 149 */
256 CHAN5G(5765), /* Channel 153 */
257 CHAN5G(5785), /* Channel 157 */
258 CHAN5G(5805), /* Channel 161 */
259 CHAN5G(5825), /* Channel 165 */
260 };
261
262 static const struct ieee80211_rate hwsim_rates[] = {
263 { .bitrate = 10 },
264 { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
265 { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
266 { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
267 { .bitrate = 60 },
268 { .bitrate = 90 },
269 { .bitrate = 120 },
270 { .bitrate = 180 },
271 { .bitrate = 240 },
272 { .bitrate = 360 },
273 { .bitrate = 480 },
274 { .bitrate = 540 }
275 };
276
277 static spinlock_t hwsim_radio_lock;
278 static struct list_head hwsim_radios;
279
280 struct mac80211_hwsim_data {
281 struct list_head list;
282 struct ieee80211_hw *hw;
283 struct device *dev;
284 struct ieee80211_supported_band bands[2];
285 struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)];
286 struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)];
287 struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
288
289 struct mac_address addresses[2];
290
291 struct ieee80211_channel *channel;
292 unsigned long beacon_int; /* in jiffies unit */
293 unsigned int rx_filter;
294 bool started, idle, scanning;
295 struct mutex mutex;
296 struct timer_list beacon_timer;
297 enum ps_mode {
298 PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
299 } ps;
300 bool ps_poll_pending;
301 struct dentry *debugfs;
302 struct dentry *debugfs_ps;
303
304 /*
305 * Only radios in the same group can communicate together (the
306 * channel has to match too). Each bit represents a group. A
307 * radio can be in more then one group.
308 */
309 u64 group;
310 struct dentry *debugfs_group;
311 };
312
313
314 struct hwsim_radiotap_hdr {
315 struct ieee80211_radiotap_header hdr;
316 u8 rt_flags;
317 u8 rt_rate;
318 __le16 rt_channel;
319 __le16 rt_chbitmask;
320 } __packed;
321
322
323 static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
324 struct net_device *dev)
325 {
326 /* TODO: allow packet injection */
327 dev_kfree_skb(skb);
328 return NETDEV_TX_OK;
329 }
330
331
332 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
333 struct sk_buff *tx_skb)
334 {
335 struct mac80211_hwsim_data *data = hw->priv;
336 struct sk_buff *skb;
337 struct hwsim_radiotap_hdr *hdr;
338 u16 flags;
339 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
340 struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
341
342 if (!netif_running(hwsim_mon))
343 return;
344
345 skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
346 if (skb == NULL)
347 return;
348
349 hdr = (struct hwsim_radiotap_hdr *) skb_push(skb, sizeof(*hdr));
350 hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
351 hdr->hdr.it_pad = 0;
352 hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
353 hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
354 (1 << IEEE80211_RADIOTAP_RATE) |
355 (1 << IEEE80211_RADIOTAP_CHANNEL));
356 hdr->rt_flags = 0;
357 hdr->rt_rate = txrate->bitrate / 5;
358 hdr->rt_channel = cpu_to_le16(data->channel->center_freq);
359 flags = IEEE80211_CHAN_2GHZ;
360 if (txrate->flags & IEEE80211_RATE_ERP_G)
361 flags |= IEEE80211_CHAN_OFDM;
362 else
363 flags |= IEEE80211_CHAN_CCK;
364 hdr->rt_chbitmask = cpu_to_le16(flags);
365
366 skb->dev = hwsim_mon;
367 skb_set_mac_header(skb, 0);
368 skb->ip_summed = CHECKSUM_UNNECESSARY;
369 skb->pkt_type = PACKET_OTHERHOST;
370 skb->protocol = htons(ETH_P_802_2);
371 memset(skb->cb, 0, sizeof(skb->cb));
372 netif_rx(skb);
373 }
374
375
376 static void mac80211_hwsim_monitor_ack(struct ieee80211_hw *hw, const u8 *addr)
377 {
378 struct mac80211_hwsim_data *data = hw->priv;
379 struct sk_buff *skb;
380 struct hwsim_radiotap_hdr *hdr;
381 u16 flags;
382 struct ieee80211_hdr *hdr11;
383
384 if (!netif_running(hwsim_mon))
385 return;
386
387 skb = dev_alloc_skb(100);
388 if (skb == NULL)
389 return;
390
391 hdr = (struct hwsim_radiotap_hdr *) skb_put(skb, sizeof(*hdr));
392 hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
393 hdr->hdr.it_pad = 0;
394 hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
395 hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
396 (1 << IEEE80211_RADIOTAP_CHANNEL));
397 hdr->rt_flags = 0;
398 hdr->rt_rate = 0;
399 hdr->rt_channel = cpu_to_le16(data->channel->center_freq);
400 flags = IEEE80211_CHAN_2GHZ;
401 hdr->rt_chbitmask = cpu_to_le16(flags);
402
403 hdr11 = (struct ieee80211_hdr *) skb_put(skb, 10);
404 hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
405 IEEE80211_STYPE_ACK);
406 hdr11->duration_id = cpu_to_le16(0);
407 memcpy(hdr11->addr1, addr, ETH_ALEN);
408
409 skb->dev = hwsim_mon;
410 skb_set_mac_header(skb, 0);
411 skb->ip_summed = CHECKSUM_UNNECESSARY;
412 skb->pkt_type = PACKET_OTHERHOST;
413 skb->protocol = htons(ETH_P_802_2);
414 memset(skb->cb, 0, sizeof(skb->cb));
415 netif_rx(skb);
416 }
417
418
419 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
420 struct sk_buff *skb)
421 {
422 switch (data->ps) {
423 case PS_DISABLED:
424 return true;
425 case PS_ENABLED:
426 return false;
427 case PS_AUTO_POLL:
428 /* TODO: accept (some) Beacons by default and other frames only
429 * if pending PS-Poll has been sent */
430 return true;
431 case PS_MANUAL_POLL:
432 /* Allow unicast frames to own address if there is a pending
433 * PS-Poll */
434 if (data->ps_poll_pending &&
435 memcmp(data->hw->wiphy->perm_addr, skb->data + 4,
436 ETH_ALEN) == 0) {
437 data->ps_poll_pending = false;
438 return true;
439 }
440 return false;
441 }
442
443 return true;
444 }
445
446
447 struct mac80211_hwsim_addr_match_data {
448 bool ret;
449 const u8 *addr;
450 };
451
452 static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
453 struct ieee80211_vif *vif)
454 {
455 struct mac80211_hwsim_addr_match_data *md = data;
456 if (memcmp(mac, md->addr, ETH_ALEN) == 0)
457 md->ret = true;
458 }
459
460
461 static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
462 const u8 *addr)
463 {
464 struct mac80211_hwsim_addr_match_data md;
465
466 if (memcmp(addr, data->hw->wiphy->perm_addr, ETH_ALEN) == 0)
467 return true;
468
469 md.ret = false;
470 md.addr = addr;
471 ieee80211_iterate_active_interfaces_atomic(data->hw,
472 mac80211_hwsim_addr_iter,
473 &md);
474
475 return md.ret;
476 }
477
478
479 static bool mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
480 struct sk_buff *skb)
481 {
482 struct mac80211_hwsim_data *data = hw->priv, *data2;
483 bool ack = false;
484 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
485 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
486 struct ieee80211_rx_status rx_status;
487
488 if (data->idle) {
489 wiphy_debug(hw->wiphy, "trying to tx when idle - reject\n");
490 return false;
491 }
492
493 memset(&rx_status, 0, sizeof(rx_status));
494 /* TODO: set mactime */
495 rx_status.freq = data->channel->center_freq;
496 rx_status.band = data->channel->band;
497 rx_status.rate_idx = info->control.rates[0].idx;
498 /* TODO: simulate real signal strength (and optional packet loss) */
499 rx_status.signal = -50;
500
501 if (data->ps != PS_DISABLED)
502 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
503
504 /* release the skb's source info */
505 skb_orphan(skb);
506 skb_dst_drop(skb);
507 skb->mark = 0;
508 secpath_reset(skb);
509 nf_reset(skb);
510
511 /* Copy skb to all enabled radios that are on the current frequency */
512 spin_lock(&hwsim_radio_lock);
513 list_for_each_entry(data2, &hwsim_radios, list) {
514 struct sk_buff *nskb;
515
516 if (data == data2)
517 continue;
518
519 if (data2->idle || !data2->started ||
520 !hwsim_ps_rx_ok(data2, skb) ||
521 !data->channel || !data2->channel ||
522 data->channel->center_freq != data2->channel->center_freq ||
523 !(data->group & data2->group))
524 continue;
525
526 nskb = skb_copy(skb, GFP_ATOMIC);
527 if (nskb == NULL)
528 continue;
529
530 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
531 ack = true;
532 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
533 ieee80211_rx_irqsafe(data2->hw, nskb);
534 }
535 spin_unlock(&hwsim_radio_lock);
536
537 return ack;
538 }
539
540
541 static int mac80211_hwsim_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
542 {
543 bool ack;
544 struct ieee80211_tx_info *txi;
545
546 mac80211_hwsim_monitor_rx(hw, skb);
547
548 if (skb->len < 10) {
549 /* Should not happen; just a sanity check for addr1 use */
550 dev_kfree_skb(skb);
551 return NETDEV_TX_OK;
552 }
553
554 ack = mac80211_hwsim_tx_frame(hw, skb);
555 if (ack && skb->len >= 16) {
556 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
557 mac80211_hwsim_monitor_ack(hw, hdr->addr2);
558 }
559
560 txi = IEEE80211_SKB_CB(skb);
561
562 if (txi->control.vif)
563 hwsim_check_magic(txi->control.vif);
564 if (txi->control.sta)
565 hwsim_check_sta_magic(txi->control.sta);
566
567 ieee80211_tx_info_clear_status(txi);
568 if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
569 txi->flags |= IEEE80211_TX_STAT_ACK;
570 ieee80211_tx_status_irqsafe(hw, skb);
571 return NETDEV_TX_OK;
572 }
573
574
575 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
576 {
577 struct mac80211_hwsim_data *data = hw->priv;
578 wiphy_debug(hw->wiphy, "%s\n", __func__);
579 data->started = 1;
580 return 0;
581 }
582
583
584 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
585 {
586 struct mac80211_hwsim_data *data = hw->priv;
587 data->started = 0;
588 del_timer(&data->beacon_timer);
589 wiphy_debug(hw->wiphy, "%s\n", __func__);
590 }
591
592
593 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
594 struct ieee80211_vif *vif)
595 {
596 wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
597 __func__, vif->type, vif->addr);
598 hwsim_set_magic(vif);
599 return 0;
600 }
601
602
603 static void mac80211_hwsim_remove_interface(
604 struct ieee80211_hw *hw, struct ieee80211_vif *vif)
605 {
606 wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
607 __func__, vif->type, vif->addr);
608 hwsim_check_magic(vif);
609 hwsim_clear_magic(vif);
610 }
611
612
613 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
614 struct ieee80211_vif *vif)
615 {
616 struct ieee80211_hw *hw = arg;
617 struct sk_buff *skb;
618 struct ieee80211_tx_info *info;
619
620 hwsim_check_magic(vif);
621
622 if (vif->type != NL80211_IFTYPE_AP &&
623 vif->type != NL80211_IFTYPE_MESH_POINT)
624 return;
625
626 skb = ieee80211_beacon_get(hw, vif);
627 if (skb == NULL)
628 return;
629 info = IEEE80211_SKB_CB(skb);
630
631 mac80211_hwsim_monitor_rx(hw, skb);
632 mac80211_hwsim_tx_frame(hw, skb);
633 dev_kfree_skb(skb);
634 }
635
636
637 static void mac80211_hwsim_beacon(unsigned long arg)
638 {
639 struct ieee80211_hw *hw = (struct ieee80211_hw *) arg;
640 struct mac80211_hwsim_data *data = hw->priv;
641
642 if (!data->started)
643 return;
644
645 ieee80211_iterate_active_interfaces_atomic(
646 hw, mac80211_hwsim_beacon_tx, hw);
647
648 data->beacon_timer.expires = jiffies + data->beacon_int;
649 add_timer(&data->beacon_timer);
650 }
651
652 static const char *hwsim_chantypes[] = {
653 [NL80211_CHAN_NO_HT] = "noht",
654 [NL80211_CHAN_HT20] = "ht20",
655 [NL80211_CHAN_HT40MINUS] = "ht40-",
656 [NL80211_CHAN_HT40PLUS] = "ht40+",
657 };
658
659 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
660 {
661 struct mac80211_hwsim_data *data = hw->priv;
662 struct ieee80211_conf *conf = &hw->conf;
663 static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
664 [IEEE80211_SMPS_AUTOMATIC] = "auto",
665 [IEEE80211_SMPS_OFF] = "off",
666 [IEEE80211_SMPS_STATIC] = "static",
667 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
668 };
669
670 wiphy_debug(hw->wiphy,
671 "%s (freq=%d/%s idle=%d ps=%d smps=%s)\n",
672 __func__,
673 conf->channel->center_freq,
674 hwsim_chantypes[conf->channel_type],
675 !!(conf->flags & IEEE80211_CONF_IDLE),
676 !!(conf->flags & IEEE80211_CONF_PS),
677 smps_modes[conf->smps_mode]);
678
679 data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
680
681 data->channel = conf->channel;
682 if (!data->started || !data->beacon_int)
683 del_timer(&data->beacon_timer);
684 else
685 mod_timer(&data->beacon_timer, jiffies + data->beacon_int);
686
687 return 0;
688 }
689
690
691 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
692 unsigned int changed_flags,
693 unsigned int *total_flags,u64 multicast)
694 {
695 struct mac80211_hwsim_data *data = hw->priv;
696
697 wiphy_debug(hw->wiphy, "%s\n", __func__);
698
699 data->rx_filter = 0;
700 if (*total_flags & FIF_PROMISC_IN_BSS)
701 data->rx_filter |= FIF_PROMISC_IN_BSS;
702 if (*total_flags & FIF_ALLMULTI)
703 data->rx_filter |= FIF_ALLMULTI;
704
705 *total_flags = data->rx_filter;
706 }
707
708 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
709 struct ieee80211_vif *vif,
710 struct ieee80211_bss_conf *info,
711 u32 changed)
712 {
713 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
714 struct mac80211_hwsim_data *data = hw->priv;
715
716 hwsim_check_magic(vif);
717
718 wiphy_debug(hw->wiphy, "%s(changed=0x%x)\n", __func__, changed);
719
720 if (changed & BSS_CHANGED_BSSID) {
721 wiphy_debug(hw->wiphy, "%s: BSSID changed: %pM\n",
722 __func__, info->bssid);
723 memcpy(vp->bssid, info->bssid, ETH_ALEN);
724 }
725
726 if (changed & BSS_CHANGED_ASSOC) {
727 wiphy_debug(hw->wiphy, " ASSOC: assoc=%d aid=%d\n",
728 info->assoc, info->aid);
729 vp->assoc = info->assoc;
730 vp->aid = info->aid;
731 }
732
733 if (changed & BSS_CHANGED_BEACON_INT) {
734 wiphy_debug(hw->wiphy, " BCNINT: %d\n", info->beacon_int);
735 data->beacon_int = 1024 * info->beacon_int / 1000 * HZ / 1000;
736 if (WARN_ON(!data->beacon_int))
737 data->beacon_int = 1;
738 if (data->started)
739 mod_timer(&data->beacon_timer,
740 jiffies + data->beacon_int);
741 }
742
743 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
744 wiphy_debug(hw->wiphy, " ERP_CTS_PROT: %d\n",
745 info->use_cts_prot);
746 }
747
748 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
749 wiphy_debug(hw->wiphy, " ERP_PREAMBLE: %d\n",
750 info->use_short_preamble);
751 }
752
753 if (changed & BSS_CHANGED_ERP_SLOT) {
754 wiphy_debug(hw->wiphy, " ERP_SLOT: %d\n", info->use_short_slot);
755 }
756
757 if (changed & BSS_CHANGED_HT) {
758 wiphy_debug(hw->wiphy, " HT: op_mode=0x%x, chantype=%s\n",
759 info->ht_operation_mode,
760 hwsim_chantypes[info->channel_type]);
761 }
762
763 if (changed & BSS_CHANGED_BASIC_RATES) {
764 wiphy_debug(hw->wiphy, " BASIC_RATES: 0x%llx\n",
765 (unsigned long long) info->basic_rates);
766 }
767 }
768
769 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
770 struct ieee80211_vif *vif,
771 struct ieee80211_sta *sta)
772 {
773 hwsim_check_magic(vif);
774 hwsim_set_sta_magic(sta);
775
776 return 0;
777 }
778
779 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
780 struct ieee80211_vif *vif,
781 struct ieee80211_sta *sta)
782 {
783 hwsim_check_magic(vif);
784 hwsim_clear_sta_magic(sta);
785
786 return 0;
787 }
788
789 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
790 struct ieee80211_vif *vif,
791 enum sta_notify_cmd cmd,
792 struct ieee80211_sta *sta)
793 {
794 hwsim_check_magic(vif);
795
796 switch (cmd) {
797 case STA_NOTIFY_SLEEP:
798 case STA_NOTIFY_AWAKE:
799 /* TODO: make good use of these flags */
800 break;
801 default:
802 WARN(1, "Invalid sta notify: %d\n", cmd);
803 break;
804 }
805 }
806
807 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
808 struct ieee80211_sta *sta,
809 bool set)
810 {
811 hwsim_check_sta_magic(sta);
812 return 0;
813 }
814
815 static int mac80211_hwsim_conf_tx(
816 struct ieee80211_hw *hw, u16 queue,
817 const struct ieee80211_tx_queue_params *params)
818 {
819 wiphy_debug(hw->wiphy,
820 "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
821 __func__, queue,
822 params->txop, params->cw_min,
823 params->cw_max, params->aifs);
824 return 0;
825 }
826
827 static int mac80211_hwsim_get_survey(
828 struct ieee80211_hw *hw, int idx,
829 struct survey_info *survey)
830 {
831 struct ieee80211_conf *conf = &hw->conf;
832
833 wiphy_debug(hw->wiphy, "%s (idx=%d)\n", __func__, idx);
834
835 if (idx != 0)
836 return -ENOENT;
837
838 /* Current channel */
839 survey->channel = conf->channel;
840
841 /*
842 * Magically conjured noise level --- this is only ok for simulated hardware.
843 *
844 * A real driver which cannot determine the real channel noise MUST NOT
845 * report any noise, especially not a magically conjured one :-)
846 */
847 survey->filled = SURVEY_INFO_NOISE_DBM;
848 survey->noise = -92;
849
850 return 0;
851 }
852
853 #ifdef CONFIG_NL80211_TESTMODE
854 /*
855 * This section contains example code for using netlink
856 * attributes with the testmode command in nl80211.
857 */
858
859 /* These enums need to be kept in sync with userspace */
860 enum hwsim_testmode_attr {
861 __HWSIM_TM_ATTR_INVALID = 0,
862 HWSIM_TM_ATTR_CMD = 1,
863 HWSIM_TM_ATTR_PS = 2,
864
865 /* keep last */
866 __HWSIM_TM_ATTR_AFTER_LAST,
867 HWSIM_TM_ATTR_MAX = __HWSIM_TM_ATTR_AFTER_LAST - 1
868 };
869
870 enum hwsim_testmode_cmd {
871 HWSIM_TM_CMD_SET_PS = 0,
872 HWSIM_TM_CMD_GET_PS = 1,
873 };
874
875 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
876 [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
877 [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
878 };
879
880 static int hwsim_fops_ps_write(void *dat, u64 val);
881
882 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
883 void *data, int len)
884 {
885 struct mac80211_hwsim_data *hwsim = hw->priv;
886 struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
887 struct sk_buff *skb;
888 int err, ps;
889
890 err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
891 hwsim_testmode_policy);
892 if (err)
893 return err;
894
895 if (!tb[HWSIM_TM_ATTR_CMD])
896 return -EINVAL;
897
898 switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
899 case HWSIM_TM_CMD_SET_PS:
900 if (!tb[HWSIM_TM_ATTR_PS])
901 return -EINVAL;
902 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
903 return hwsim_fops_ps_write(hwsim, ps);
904 case HWSIM_TM_CMD_GET_PS:
905 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
906 nla_total_size(sizeof(u32)));
907 if (!skb)
908 return -ENOMEM;
909 NLA_PUT_U32(skb, HWSIM_TM_ATTR_PS, hwsim->ps);
910 return cfg80211_testmode_reply(skb);
911 default:
912 return -EOPNOTSUPP;
913 }
914
915 nla_put_failure:
916 kfree_skb(skb);
917 return -ENOBUFS;
918 }
919 #endif
920
921 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
922 struct ieee80211_vif *vif,
923 enum ieee80211_ampdu_mlme_action action,
924 struct ieee80211_sta *sta, u16 tid, u16 *ssn)
925 {
926 switch (action) {
927 case IEEE80211_AMPDU_TX_START:
928 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
929 break;
930 case IEEE80211_AMPDU_TX_STOP:
931 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
932 break;
933 case IEEE80211_AMPDU_TX_OPERATIONAL:
934 break;
935 case IEEE80211_AMPDU_RX_START:
936 case IEEE80211_AMPDU_RX_STOP:
937 break;
938 default:
939 return -EOPNOTSUPP;
940 }
941
942 return 0;
943 }
944
945 static void mac80211_hwsim_flush(struct ieee80211_hw *hw, bool drop)
946 {
947 /*
948 * In this special case, there's nothing we need to
949 * do because hwsim does transmission synchronously.
950 * In the future, when it does transmissions via
951 * userspace, we may need to do something.
952 */
953 }
954
955 struct hw_scan_done {
956 struct delayed_work w;
957 struct ieee80211_hw *hw;
958 };
959
960 static void hw_scan_done(struct work_struct *work)
961 {
962 struct hw_scan_done *hsd =
963 container_of(work, struct hw_scan_done, w.work);
964
965 ieee80211_scan_completed(hsd->hw, false);
966 kfree(hsd);
967 }
968
969 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
970 struct ieee80211_vif *vif,
971 struct cfg80211_scan_request *req)
972 {
973 struct hw_scan_done *hsd = kzalloc(sizeof(*hsd), GFP_KERNEL);
974 int i;
975
976 if (!hsd)
977 return -ENOMEM;
978
979 hsd->hw = hw;
980 INIT_DELAYED_WORK(&hsd->w, hw_scan_done);
981
982 printk(KERN_DEBUG "hwsim hw_scan request\n");
983 for (i = 0; i < req->n_channels; i++)
984 printk(KERN_DEBUG "hwsim hw_scan freq %d\n",
985 req->channels[i]->center_freq);
986
987 ieee80211_queue_delayed_work(hw, &hsd->w, 2 * HZ);
988
989 return 0;
990 }
991
992 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw)
993 {
994 struct mac80211_hwsim_data *hwsim = hw->priv;
995
996 mutex_lock(&hwsim->mutex);
997
998 if (hwsim->scanning) {
999 printk(KERN_DEBUG "two hwsim sw_scans detected!\n");
1000 goto out;
1001 }
1002
1003 printk(KERN_DEBUG "hwsim sw_scan request, prepping stuff\n");
1004 hwsim->scanning = true;
1005
1006 out:
1007 mutex_unlock(&hwsim->mutex);
1008 }
1009
1010 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw)
1011 {
1012 struct mac80211_hwsim_data *hwsim = hw->priv;
1013
1014 mutex_lock(&hwsim->mutex);
1015
1016 printk(KERN_DEBUG "hwsim sw_scan_complete\n");
1017 hwsim->scanning = false;
1018
1019 mutex_unlock(&hwsim->mutex);
1020 }
1021
1022 static struct ieee80211_ops mac80211_hwsim_ops =
1023 {
1024 .tx = mac80211_hwsim_tx,
1025 .start = mac80211_hwsim_start,
1026 .stop = mac80211_hwsim_stop,
1027 .add_interface = mac80211_hwsim_add_interface,
1028 .remove_interface = mac80211_hwsim_remove_interface,
1029 .config = mac80211_hwsim_config,
1030 .configure_filter = mac80211_hwsim_configure_filter,
1031 .bss_info_changed = mac80211_hwsim_bss_info_changed,
1032 .sta_add = mac80211_hwsim_sta_add,
1033 .sta_remove = mac80211_hwsim_sta_remove,
1034 .sta_notify = mac80211_hwsim_sta_notify,
1035 .set_tim = mac80211_hwsim_set_tim,
1036 .conf_tx = mac80211_hwsim_conf_tx,
1037 .get_survey = mac80211_hwsim_get_survey,
1038 CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)
1039 .ampdu_action = mac80211_hwsim_ampdu_action,
1040 .sw_scan_start = mac80211_hwsim_sw_scan,
1041 .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
1042 .flush = mac80211_hwsim_flush,
1043 };
1044
1045
1046 static void mac80211_hwsim_free(void)
1047 {
1048 struct list_head tmplist, *i, *tmp;
1049 struct mac80211_hwsim_data *data, *tmpdata;
1050
1051 INIT_LIST_HEAD(&tmplist);
1052
1053 spin_lock_bh(&hwsim_radio_lock);
1054 list_for_each_safe(i, tmp, &hwsim_radios)
1055 list_move(i, &tmplist);
1056 spin_unlock_bh(&hwsim_radio_lock);
1057
1058 list_for_each_entry_safe(data, tmpdata, &tmplist, list) {
1059 debugfs_remove(data->debugfs_group);
1060 debugfs_remove(data->debugfs_ps);
1061 debugfs_remove(data->debugfs);
1062 ieee80211_unregister_hw(data->hw);
1063 device_unregister(data->dev);
1064 ieee80211_free_hw(data->hw);
1065 }
1066 class_destroy(hwsim_class);
1067 }
1068
1069
1070 static struct device_driver mac80211_hwsim_driver = {
1071 .name = "mac80211_hwsim"
1072 };
1073
1074 static const struct net_device_ops hwsim_netdev_ops = {
1075 .ndo_start_xmit = hwsim_mon_xmit,
1076 .ndo_change_mtu = eth_change_mtu,
1077 .ndo_set_mac_address = eth_mac_addr,
1078 .ndo_validate_addr = eth_validate_addr,
1079 };
1080
1081 static void hwsim_mon_setup(struct net_device *dev)
1082 {
1083 dev->netdev_ops = &hwsim_netdev_ops;
1084 dev->destructor = free_netdev;
1085 ether_setup(dev);
1086 dev->tx_queue_len = 0;
1087 dev->type = ARPHRD_IEEE80211_RADIOTAP;
1088 memset(dev->dev_addr, 0, ETH_ALEN);
1089 dev->dev_addr[0] = 0x12;
1090 }
1091
1092
1093 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
1094 {
1095 struct mac80211_hwsim_data *data = dat;
1096 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1097 struct sk_buff *skb;
1098 struct ieee80211_pspoll *pspoll;
1099
1100 if (!vp->assoc)
1101 return;
1102
1103 wiphy_debug(data->hw->wiphy,
1104 "%s: send PS-Poll to %pM for aid %d\n",
1105 __func__, vp->bssid, vp->aid);
1106
1107 skb = dev_alloc_skb(sizeof(*pspoll));
1108 if (!skb)
1109 return;
1110 pspoll = (void *) skb_put(skb, sizeof(*pspoll));
1111 pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
1112 IEEE80211_STYPE_PSPOLL |
1113 IEEE80211_FCTL_PM);
1114 pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
1115 memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
1116 memcpy(pspoll->ta, mac, ETH_ALEN);
1117 if (!mac80211_hwsim_tx_frame(data->hw, skb))
1118 printk(KERN_DEBUG "%s: PS-Poll frame not ack'ed\n", __func__);
1119 dev_kfree_skb(skb);
1120 }
1121
1122
1123 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
1124 struct ieee80211_vif *vif, int ps)
1125 {
1126 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1127 struct sk_buff *skb;
1128 struct ieee80211_hdr *hdr;
1129
1130 if (!vp->assoc)
1131 return;
1132
1133 wiphy_debug(data->hw->wiphy,
1134 "%s: send data::nullfunc to %pM ps=%d\n",
1135 __func__, vp->bssid, ps);
1136
1137 skb = dev_alloc_skb(sizeof(*hdr));
1138 if (!skb)
1139 return;
1140 hdr = (void *) skb_put(skb, sizeof(*hdr) - ETH_ALEN);
1141 hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
1142 IEEE80211_STYPE_NULLFUNC |
1143 (ps ? IEEE80211_FCTL_PM : 0));
1144 hdr->duration_id = cpu_to_le16(0);
1145 memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
1146 memcpy(hdr->addr2, mac, ETH_ALEN);
1147 memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
1148 if (!mac80211_hwsim_tx_frame(data->hw, skb))
1149 printk(KERN_DEBUG "%s: nullfunc frame not ack'ed\n", __func__);
1150 dev_kfree_skb(skb);
1151 }
1152
1153
1154 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
1155 struct ieee80211_vif *vif)
1156 {
1157 struct mac80211_hwsim_data *data = dat;
1158 hwsim_send_nullfunc(data, mac, vif, 1);
1159 }
1160
1161
1162 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
1163 struct ieee80211_vif *vif)
1164 {
1165 struct mac80211_hwsim_data *data = dat;
1166 hwsim_send_nullfunc(data, mac, vif, 0);
1167 }
1168
1169
1170 static int hwsim_fops_ps_read(void *dat, u64 *val)
1171 {
1172 struct mac80211_hwsim_data *data = dat;
1173 *val = data->ps;
1174 return 0;
1175 }
1176
1177 static int hwsim_fops_ps_write(void *dat, u64 val)
1178 {
1179 struct mac80211_hwsim_data *data = dat;
1180 enum ps_mode old_ps;
1181
1182 if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
1183 val != PS_MANUAL_POLL)
1184 return -EINVAL;
1185
1186 old_ps = data->ps;
1187 data->ps = val;
1188
1189 if (val == PS_MANUAL_POLL) {
1190 ieee80211_iterate_active_interfaces(data->hw,
1191 hwsim_send_ps_poll, data);
1192 data->ps_poll_pending = true;
1193 } else if (old_ps == PS_DISABLED && val != PS_DISABLED) {
1194 ieee80211_iterate_active_interfaces(data->hw,
1195 hwsim_send_nullfunc_ps,
1196 data);
1197 } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
1198 ieee80211_iterate_active_interfaces(data->hw,
1199 hwsim_send_nullfunc_no_ps,
1200 data);
1201 }
1202
1203 return 0;
1204 }
1205
1206 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
1207 "%llu\n");
1208
1209
1210 static int hwsim_fops_group_read(void *dat, u64 *val)
1211 {
1212 struct mac80211_hwsim_data *data = dat;
1213 *val = data->group;
1214 return 0;
1215 }
1216
1217 static int hwsim_fops_group_write(void *dat, u64 val)
1218 {
1219 struct mac80211_hwsim_data *data = dat;
1220 data->group = val;
1221 return 0;
1222 }
1223
1224 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
1225 hwsim_fops_group_read, hwsim_fops_group_write,
1226 "%llx\n");
1227
1228 static int __init init_mac80211_hwsim(void)
1229 {
1230 int i, err = 0;
1231 u8 addr[ETH_ALEN];
1232 struct mac80211_hwsim_data *data;
1233 struct ieee80211_hw *hw;
1234 enum ieee80211_band band;
1235
1236 if (radios < 1 || radios > 100)
1237 return -EINVAL;
1238
1239 if (fake_hw_scan) {
1240 mac80211_hwsim_ops.hw_scan = mac80211_hwsim_hw_scan;
1241 mac80211_hwsim_ops.sw_scan_start = NULL;
1242 mac80211_hwsim_ops.sw_scan_complete = NULL;
1243 }
1244
1245 spin_lock_init(&hwsim_radio_lock);
1246 INIT_LIST_HEAD(&hwsim_radios);
1247
1248 hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
1249 if (IS_ERR(hwsim_class))
1250 return PTR_ERR(hwsim_class);
1251
1252 memset(addr, 0, ETH_ALEN);
1253 addr[0] = 0x02;
1254
1255 for (i = 0; i < radios; i++) {
1256 printk(KERN_DEBUG "mac80211_hwsim: Initializing radio %d\n",
1257 i);
1258 hw = ieee80211_alloc_hw(sizeof(*data), &mac80211_hwsim_ops);
1259 if (!hw) {
1260 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw "
1261 "failed\n");
1262 err = -ENOMEM;
1263 goto failed;
1264 }
1265 data = hw->priv;
1266 data->hw = hw;
1267
1268 data->dev = device_create(hwsim_class, NULL, 0, hw,
1269 "hwsim%d", i);
1270 if (IS_ERR(data->dev)) {
1271 printk(KERN_DEBUG
1272 "mac80211_hwsim: device_create "
1273 "failed (%ld)\n", PTR_ERR(data->dev));
1274 err = -ENOMEM;
1275 goto failed_drvdata;
1276 }
1277 data->dev->driver = &mac80211_hwsim_driver;
1278
1279 SET_IEEE80211_DEV(hw, data->dev);
1280 addr[3] = i >> 8;
1281 addr[4] = i;
1282 memcpy(data->addresses[0].addr, addr, ETH_ALEN);
1283 memcpy(data->addresses[1].addr, addr, ETH_ALEN);
1284 data->addresses[1].addr[0] |= 0x40;
1285 hw->wiphy->n_addresses = 2;
1286 hw->wiphy->addresses = data->addresses;
1287
1288 if (fake_hw_scan) {
1289 hw->wiphy->max_scan_ssids = 255;
1290 hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
1291 }
1292
1293 hw->channel_change_time = 1;
1294 hw->queues = 4;
1295 hw->wiphy->interface_modes =
1296 BIT(NL80211_IFTYPE_STATION) |
1297 BIT(NL80211_IFTYPE_AP) |
1298 BIT(NL80211_IFTYPE_MESH_POINT);
1299
1300 hw->flags = IEEE80211_HW_MFP_CAPABLE |
1301 IEEE80211_HW_SIGNAL_DBM |
1302 IEEE80211_HW_SUPPORTS_STATIC_SMPS |
1303 IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
1304 IEEE80211_HW_AMPDU_AGGREGATION;
1305
1306 /* ask mac80211 to reserve space for magic */
1307 hw->vif_data_size = sizeof(struct hwsim_vif_priv);
1308 hw->sta_data_size = sizeof(struct hwsim_sta_priv);
1309
1310 memcpy(data->channels_2ghz, hwsim_channels_2ghz,
1311 sizeof(hwsim_channels_2ghz));
1312 memcpy(data->channels_5ghz, hwsim_channels_5ghz,
1313 sizeof(hwsim_channels_5ghz));
1314 memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
1315
1316 for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) {
1317 struct ieee80211_supported_band *sband = &data->bands[band];
1318 switch (band) {
1319 case IEEE80211_BAND_2GHZ:
1320 sband->channels = data->channels_2ghz;
1321 sband->n_channels =
1322 ARRAY_SIZE(hwsim_channels_2ghz);
1323 sband->bitrates = data->rates;
1324 sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
1325 break;
1326 case IEEE80211_BAND_5GHZ:
1327 sband->channels = data->channels_5ghz;
1328 sband->n_channels =
1329 ARRAY_SIZE(hwsim_channels_5ghz);
1330 sband->bitrates = data->rates + 4;
1331 sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
1332 break;
1333 default:
1334 break;
1335 }
1336
1337 sband->ht_cap.ht_supported = true;
1338 sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
1339 IEEE80211_HT_CAP_GRN_FLD |
1340 IEEE80211_HT_CAP_SGI_40 |
1341 IEEE80211_HT_CAP_DSSSCCK40;
1342 sband->ht_cap.ampdu_factor = 0x3;
1343 sband->ht_cap.ampdu_density = 0x6;
1344 memset(&sband->ht_cap.mcs, 0,
1345 sizeof(sband->ht_cap.mcs));
1346 sband->ht_cap.mcs.rx_mask[0] = 0xff;
1347 sband->ht_cap.mcs.rx_mask[1] = 0xff;
1348 sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
1349
1350 hw->wiphy->bands[band] = sband;
1351 }
1352 /* By default all radios are belonging to the first group */
1353 data->group = 1;
1354 mutex_init(&data->mutex);
1355
1356 /* Work to be done prior to ieee80211_register_hw() */
1357 switch (regtest) {
1358 case HWSIM_REGTEST_DISABLED:
1359 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
1360 case HWSIM_REGTEST_DRIVER_REG_ALL:
1361 case HWSIM_REGTEST_DIFF_COUNTRY:
1362 /*
1363 * Nothing to be done for driver regulatory domain
1364 * hints prior to ieee80211_register_hw()
1365 */
1366 break;
1367 case HWSIM_REGTEST_WORLD_ROAM:
1368 if (i == 0) {
1369 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1370 wiphy_apply_custom_regulatory(hw->wiphy,
1371 &hwsim_world_regdom_custom_01);
1372 }
1373 break;
1374 case HWSIM_REGTEST_CUSTOM_WORLD:
1375 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1376 wiphy_apply_custom_regulatory(hw->wiphy,
1377 &hwsim_world_regdom_custom_01);
1378 break;
1379 case HWSIM_REGTEST_CUSTOM_WORLD_2:
1380 if (i == 0) {
1381 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1382 wiphy_apply_custom_regulatory(hw->wiphy,
1383 &hwsim_world_regdom_custom_01);
1384 } else if (i == 1) {
1385 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1386 wiphy_apply_custom_regulatory(hw->wiphy,
1387 &hwsim_world_regdom_custom_02);
1388 }
1389 break;
1390 case HWSIM_REGTEST_STRICT_ALL:
1391 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1392 break;
1393 case HWSIM_REGTEST_STRICT_FOLLOW:
1394 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
1395 if (i == 0)
1396 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1397 break;
1398 case HWSIM_REGTEST_ALL:
1399 if (i == 0) {
1400 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1401 wiphy_apply_custom_regulatory(hw->wiphy,
1402 &hwsim_world_regdom_custom_01);
1403 } else if (i == 1) {
1404 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1405 wiphy_apply_custom_regulatory(hw->wiphy,
1406 &hwsim_world_regdom_custom_02);
1407 } else if (i == 4)
1408 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1409 break;
1410 default:
1411 break;
1412 }
1413
1414 /* give the regulatory workqueue a chance to run */
1415 if (regtest)
1416 schedule_timeout_interruptible(1);
1417 err = ieee80211_register_hw(hw);
1418 if (err < 0) {
1419 printk(KERN_DEBUG "mac80211_hwsim: "
1420 "ieee80211_register_hw failed (%d)\n", err);
1421 goto failed_hw;
1422 }
1423
1424 /* Work to be done after to ieee80211_register_hw() */
1425 switch (regtest) {
1426 case HWSIM_REGTEST_WORLD_ROAM:
1427 case HWSIM_REGTEST_DISABLED:
1428 break;
1429 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
1430 if (!i)
1431 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1432 break;
1433 case HWSIM_REGTEST_DRIVER_REG_ALL:
1434 case HWSIM_REGTEST_STRICT_ALL:
1435 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1436 break;
1437 case HWSIM_REGTEST_DIFF_COUNTRY:
1438 if (i < ARRAY_SIZE(hwsim_alpha2s))
1439 regulatory_hint(hw->wiphy, hwsim_alpha2s[i]);
1440 break;
1441 case HWSIM_REGTEST_CUSTOM_WORLD:
1442 case HWSIM_REGTEST_CUSTOM_WORLD_2:
1443 /*
1444 * Nothing to be done for custom world regulatory
1445 * domains after to ieee80211_register_hw
1446 */
1447 break;
1448 case HWSIM_REGTEST_STRICT_FOLLOW:
1449 if (i == 0)
1450 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1451 break;
1452 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
1453 if (i == 0)
1454 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1455 else if (i == 1)
1456 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
1457 break;
1458 case HWSIM_REGTEST_ALL:
1459 if (i == 2)
1460 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1461 else if (i == 3)
1462 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
1463 else if (i == 4)
1464 regulatory_hint(hw->wiphy, hwsim_alpha2s[2]);
1465 break;
1466 default:
1467 break;
1468 }
1469
1470 wiphy_debug(hw->wiphy, "hwaddr %pm registered\n",
1471 hw->wiphy->perm_addr);
1472
1473 data->debugfs = debugfs_create_dir("hwsim",
1474 hw->wiphy->debugfsdir);
1475 data->debugfs_ps = debugfs_create_file("ps", 0666,
1476 data->debugfs, data,
1477 &hwsim_fops_ps);
1478 data->debugfs_group = debugfs_create_file("group", 0666,
1479 data->debugfs, data,
1480 &hwsim_fops_group);
1481
1482 setup_timer(&data->beacon_timer, mac80211_hwsim_beacon,
1483 (unsigned long) hw);
1484
1485 list_add_tail(&data->list, &hwsim_radios);
1486 }
1487
1488 hwsim_mon = alloc_netdev(0, "hwsim%d", hwsim_mon_setup);
1489 if (hwsim_mon == NULL)
1490 goto failed;
1491
1492 rtnl_lock();
1493
1494 err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
1495 if (err < 0)
1496 goto failed_mon;
1497
1498
1499 err = register_netdevice(hwsim_mon);
1500 if (err < 0)
1501 goto failed_mon;
1502
1503 rtnl_unlock();
1504
1505 return 0;
1506
1507 failed_mon:
1508 rtnl_unlock();
1509 free_netdev(hwsim_mon);
1510 mac80211_hwsim_free();
1511 return err;
1512
1513 failed_hw:
1514 device_unregister(data->dev);
1515 failed_drvdata:
1516 ieee80211_free_hw(hw);
1517 failed:
1518 mac80211_hwsim_free();
1519 return err;
1520 }
1521
1522
1523 static void __exit exit_mac80211_hwsim(void)
1524 {
1525 printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
1526
1527 mac80211_hwsim_free();
1528 unregister_netdev(hwsim_mon);
1529 }
1530
1531
1532 module_init(init_mac80211_hwsim);
1533 module_exit(exit_mac80211_hwsim);
Linux with added FPC-III support