net: call dev_alloc_name from register_netdevice
[linux-2.6.git] / drivers / net / wireless / mac80211_hwsim.c
1 /*
2  * mac80211_hwsim - software simulator of 802.11 radio(s) for mac80211
3  * Copyright (c) 2008, Jouni Malinen <j@w1.fi>
4  *
5  * This program is free software; you can redistribute it and/or modify
6  * it under the terms of the GNU General Public License version 2 as
7  * published by the Free Software Foundation.
8  */
9
10 /*
11  * TODO:
12  * - Add TSF sync and fix IBSS beacon transmission by adding
13  *   competition for "air time" at TBTT
14  * - RX filtering based on filter configuration (data->rx_filter)
15  */
16
17 #include <linux/list.h>
18 #include <linux/slab.h>
19 #include <linux/spinlock.h>
20 #include <net/dst.h>
21 #include <net/xfrm.h>
22 #include <net/mac80211.h>
23 #include <net/ieee80211_radiotap.h>
24 #include <linux/if_arp.h>
25 #include <linux/rtnetlink.h>
26 #include <linux/etherdevice.h>
27 #include <linux/debugfs.h>
28
29 MODULE_AUTHOR("Jouni Malinen");
30 MODULE_DESCRIPTION("Software simulator of 802.11 radio(s) for mac80211");
31 MODULE_LICENSE("GPL");
32
33 static int radios = 2;
34 module_param(radios, int, 0444);
35 MODULE_PARM_DESC(radios, "Number of simulated radios");
36
37 static bool fake_hw_scan;
38 module_param(fake_hw_scan, bool, 0444);
39 MODULE_PARM_DESC(fake_hw_scan, "Install fake (no-op) hw-scan handler");
40
41 /**
42  * enum hwsim_regtest - the type of regulatory tests we offer
43  *
44  * These are the different values you can use for the regtest
45  * module parameter. This is useful to help test world roaming
46  * and the driver regulatory_hint() call and combinations of these.
47  * If you want to do specific alpha2 regulatory domain tests simply
48  * use the userspace regulatory request as that will be respected as
49  * well without the need of this module parameter. This is designed
50  * only for testing the driver regulatory request, world roaming
51  * and all possible combinations.
52  *
53  * @HWSIM_REGTEST_DISABLED: No regulatory tests are performed,
54  *      this is the default value.
55  * @HWSIM_REGTEST_DRIVER_REG_FOLLOW: Used for testing the driver regulatory
56  *      hint, only one driver regulatory hint will be sent as such the
57  *      secondary radios are expected to follow.
58  * @HWSIM_REGTEST_DRIVER_REG_ALL: Used for testing the driver regulatory
59  *      request with all radios reporting the same regulatory domain.
60  * @HWSIM_REGTEST_DIFF_COUNTRY: Used for testing the drivers calling
61  *      different regulatory domains requests. Expected behaviour is for
62  *      an intersection to occur but each device will still use their
63  *      respective regulatory requested domains. Subsequent radios will
64  *      use the resulting intersection.
65  * @HWSIM_REGTEST_WORLD_ROAM: Used for testing the world roaming. We accomplish
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 void 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;
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 }
575
576
577 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
578 {
579         struct mac80211_hwsim_data *data = hw->priv;
580         wiphy_debug(hw->wiphy, "%s\n", __func__);
581         data->started = 1;
582         return 0;
583 }
584
585
586 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
587 {
588         struct mac80211_hwsim_data *data = hw->priv;
589         data->started = 0;
590         del_timer(&data->beacon_timer);
591         wiphy_debug(hw->wiphy, "%s\n", __func__);
592 }
593
594
595 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
596                                         struct ieee80211_vif *vif)
597 {
598         wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
599                     __func__, ieee80211_vif_type_p2p(vif),
600                     vif->addr);
601         hwsim_set_magic(vif);
602         return 0;
603 }
604
605
606 static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
607                                            struct ieee80211_vif *vif,
608                                            enum nl80211_iftype newtype,
609                                            bool newp2p)
610 {
611         newtype = ieee80211_iftype_p2p(newtype, newp2p);
612         wiphy_debug(hw->wiphy,
613                     "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
614                     __func__, ieee80211_vif_type_p2p(vif),
615                     newtype, vif->addr);
616         hwsim_check_magic(vif);
617
618         return 0;
619 }
620
621 static void mac80211_hwsim_remove_interface(
622         struct ieee80211_hw *hw, struct ieee80211_vif *vif)
623 {
624         wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
625                     __func__, ieee80211_vif_type_p2p(vif),
626                     vif->addr);
627         hwsim_check_magic(vif);
628         hwsim_clear_magic(vif);
629 }
630
631
632 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
633                                      struct ieee80211_vif *vif)
634 {
635         struct ieee80211_hw *hw = arg;
636         struct sk_buff *skb;
637         struct ieee80211_tx_info *info;
638
639         hwsim_check_magic(vif);
640
641         if (vif->type != NL80211_IFTYPE_AP &&
642             vif->type != NL80211_IFTYPE_MESH_POINT &&
643             vif->type != NL80211_IFTYPE_ADHOC)
644                 return;
645
646         skb = ieee80211_beacon_get(hw, vif);
647         if (skb == NULL)
648                 return;
649         info = IEEE80211_SKB_CB(skb);
650
651         mac80211_hwsim_monitor_rx(hw, skb);
652         mac80211_hwsim_tx_frame(hw, skb);
653         dev_kfree_skb(skb);
654 }
655
656
657 static void mac80211_hwsim_beacon(unsigned long arg)
658 {
659         struct ieee80211_hw *hw = (struct ieee80211_hw *) arg;
660         struct mac80211_hwsim_data *data = hw->priv;
661
662         if (!data->started)
663                 return;
664
665         ieee80211_iterate_active_interfaces_atomic(
666                 hw, mac80211_hwsim_beacon_tx, hw);
667
668         data->beacon_timer.expires = jiffies + data->beacon_int;
669         add_timer(&data->beacon_timer);
670 }
671
672 static const char *hwsim_chantypes[] = {
673         [NL80211_CHAN_NO_HT] = "noht",
674         [NL80211_CHAN_HT20] = "ht20",
675         [NL80211_CHAN_HT40MINUS] = "ht40-",
676         [NL80211_CHAN_HT40PLUS] = "ht40+",
677 };
678
679 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
680 {
681         struct mac80211_hwsim_data *data = hw->priv;
682         struct ieee80211_conf *conf = &hw->conf;
683         static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
684                 [IEEE80211_SMPS_AUTOMATIC] = "auto",
685                 [IEEE80211_SMPS_OFF] = "off",
686                 [IEEE80211_SMPS_STATIC] = "static",
687                 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
688         };
689
690         wiphy_debug(hw->wiphy,
691                     "%s (freq=%d/%s idle=%d ps=%d smps=%s)\n",
692                     __func__,
693                     conf->channel->center_freq,
694                     hwsim_chantypes[conf->channel_type],
695                     !!(conf->flags & IEEE80211_CONF_IDLE),
696                     !!(conf->flags & IEEE80211_CONF_PS),
697                     smps_modes[conf->smps_mode]);
698
699         data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
700
701         data->channel = conf->channel;
702         data->power_level = conf->power_level;
703         if (!data->started || !data->beacon_int)
704                 del_timer(&data->beacon_timer);
705         else
706                 mod_timer(&data->beacon_timer, jiffies + data->beacon_int);
707
708         return 0;
709 }
710
711
712 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
713                                             unsigned int changed_flags,
714                                             unsigned int *total_flags,u64 multicast)
715 {
716         struct mac80211_hwsim_data *data = hw->priv;
717
718         wiphy_debug(hw->wiphy, "%s\n", __func__);
719
720         data->rx_filter = 0;
721         if (*total_flags & FIF_PROMISC_IN_BSS)
722                 data->rx_filter |= FIF_PROMISC_IN_BSS;
723         if (*total_flags & FIF_ALLMULTI)
724                 data->rx_filter |= FIF_ALLMULTI;
725
726         *total_flags = data->rx_filter;
727 }
728
729 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
730                                             struct ieee80211_vif *vif,
731                                             struct ieee80211_bss_conf *info,
732                                             u32 changed)
733 {
734         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
735         struct mac80211_hwsim_data *data = hw->priv;
736
737         hwsim_check_magic(vif);
738
739         wiphy_debug(hw->wiphy, "%s(changed=0x%x)\n", __func__, changed);
740
741         if (changed & BSS_CHANGED_BSSID) {
742                 wiphy_debug(hw->wiphy, "%s: BSSID changed: %pM\n",
743                             __func__, info->bssid);
744                 memcpy(vp->bssid, info->bssid, ETH_ALEN);
745         }
746
747         if (changed & BSS_CHANGED_ASSOC) {
748                 wiphy_debug(hw->wiphy, "  ASSOC: assoc=%d aid=%d\n",
749                             info->assoc, info->aid);
750                 vp->assoc = info->assoc;
751                 vp->aid = info->aid;
752         }
753
754         if (changed & BSS_CHANGED_BEACON_INT) {
755                 wiphy_debug(hw->wiphy, "  BCNINT: %d\n", info->beacon_int);
756                 data->beacon_int = 1024 * info->beacon_int / 1000 * HZ / 1000;
757                 if (WARN_ON(!data->beacon_int))
758                         data->beacon_int = 1;
759                 if (data->started)
760                         mod_timer(&data->beacon_timer,
761                                   jiffies + data->beacon_int);
762         }
763
764         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
765                 wiphy_debug(hw->wiphy, "  ERP_CTS_PROT: %d\n",
766                             info->use_cts_prot);
767         }
768
769         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
770                 wiphy_debug(hw->wiphy, "  ERP_PREAMBLE: %d\n",
771                             info->use_short_preamble);
772         }
773
774         if (changed & BSS_CHANGED_ERP_SLOT) {
775                 wiphy_debug(hw->wiphy, "  ERP_SLOT: %d\n", info->use_short_slot);
776         }
777
778         if (changed & BSS_CHANGED_HT) {
779                 wiphy_debug(hw->wiphy, "  HT: op_mode=0x%x, chantype=%s\n",
780                             info->ht_operation_mode,
781                             hwsim_chantypes[info->channel_type]);
782         }
783
784         if (changed & BSS_CHANGED_BASIC_RATES) {
785                 wiphy_debug(hw->wiphy, "  BASIC_RATES: 0x%llx\n",
786                             (unsigned long long) info->basic_rates);
787         }
788 }
789
790 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
791                                   struct ieee80211_vif *vif,
792                                   struct ieee80211_sta *sta)
793 {
794         hwsim_check_magic(vif);
795         hwsim_set_sta_magic(sta);
796
797         return 0;
798 }
799
800 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
801                                      struct ieee80211_vif *vif,
802                                      struct ieee80211_sta *sta)
803 {
804         hwsim_check_magic(vif);
805         hwsim_clear_sta_magic(sta);
806
807         return 0;
808 }
809
810 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
811                                       struct ieee80211_vif *vif,
812                                       enum sta_notify_cmd cmd,
813                                       struct ieee80211_sta *sta)
814 {
815         hwsim_check_magic(vif);
816
817         switch (cmd) {
818         case STA_NOTIFY_SLEEP:
819         case STA_NOTIFY_AWAKE:
820                 /* TODO: make good use of these flags */
821                 break;
822         default:
823                 WARN(1, "Invalid sta notify: %d\n", cmd);
824                 break;
825         }
826 }
827
828 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
829                                   struct ieee80211_sta *sta,
830                                   bool set)
831 {
832         hwsim_check_sta_magic(sta);
833         return 0;
834 }
835
836 static int mac80211_hwsim_conf_tx(
837         struct ieee80211_hw *hw, u16 queue,
838         const struct ieee80211_tx_queue_params *params)
839 {
840         wiphy_debug(hw->wiphy,
841                     "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
842                     __func__, queue,
843                     params->txop, params->cw_min,
844                     params->cw_max, params->aifs);
845         return 0;
846 }
847
848 static int mac80211_hwsim_get_survey(
849         struct ieee80211_hw *hw, int idx,
850         struct survey_info *survey)
851 {
852         struct ieee80211_conf *conf = &hw->conf;
853
854         wiphy_debug(hw->wiphy, "%s (idx=%d)\n", __func__, idx);
855
856         if (idx != 0)
857                 return -ENOENT;
858
859         /* Current channel */
860         survey->channel = conf->channel;
861
862         /*
863          * Magically conjured noise level --- this is only ok for simulated hardware.
864          *
865          * A real driver which cannot determine the real channel noise MUST NOT
866          * report any noise, especially not a magically conjured one :-)
867          */
868         survey->filled = SURVEY_INFO_NOISE_DBM;
869         survey->noise = -92;
870
871         return 0;
872 }
873
874 #ifdef CONFIG_NL80211_TESTMODE
875 /*
876  * This section contains example code for using netlink
877  * attributes with the testmode command in nl80211.
878  */
879
880 /* These enums need to be kept in sync with userspace */
881 enum hwsim_testmode_attr {
882         __HWSIM_TM_ATTR_INVALID = 0,
883         HWSIM_TM_ATTR_CMD       = 1,
884         HWSIM_TM_ATTR_PS        = 2,
885
886         /* keep last */
887         __HWSIM_TM_ATTR_AFTER_LAST,
888         HWSIM_TM_ATTR_MAX       = __HWSIM_TM_ATTR_AFTER_LAST - 1
889 };
890
891 enum hwsim_testmode_cmd {
892         HWSIM_TM_CMD_SET_PS             = 0,
893         HWSIM_TM_CMD_GET_PS             = 1,
894 };
895
896 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
897         [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
898         [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
899 };
900
901 static int hwsim_fops_ps_write(void *dat, u64 val);
902
903 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
904                                        void *data, int len)
905 {
906         struct mac80211_hwsim_data *hwsim = hw->priv;
907         struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
908         struct sk_buff *skb;
909         int err, ps;
910
911         err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
912                         hwsim_testmode_policy);
913         if (err)
914                 return err;
915
916         if (!tb[HWSIM_TM_ATTR_CMD])
917                 return -EINVAL;
918
919         switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
920         case HWSIM_TM_CMD_SET_PS:
921                 if (!tb[HWSIM_TM_ATTR_PS])
922                         return -EINVAL;
923                 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
924                 return hwsim_fops_ps_write(hwsim, ps);
925         case HWSIM_TM_CMD_GET_PS:
926                 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
927                                                 nla_total_size(sizeof(u32)));
928                 if (!skb)
929                         return -ENOMEM;
930                 NLA_PUT_U32(skb, HWSIM_TM_ATTR_PS, hwsim->ps);
931                 return cfg80211_testmode_reply(skb);
932         default:
933                 return -EOPNOTSUPP;
934         }
935
936  nla_put_failure:
937         kfree_skb(skb);
938         return -ENOBUFS;
939 }
940 #endif
941
942 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
943                                        struct ieee80211_vif *vif,
944                                        enum ieee80211_ampdu_mlme_action action,
945                                        struct ieee80211_sta *sta, u16 tid, u16 *ssn,
946                                        u8 buf_size)
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         err = register_netdev(hwsim_mon);
1519         if (err < 0)
1520                 goto failed_mon;
1521
1522         return 0;
1523
1524 failed_mon:
1525         rtnl_unlock();
1526         free_netdev(hwsim_mon);
1527         mac80211_hwsim_free();
1528         return err;
1529
1530 failed_hw:
1531         device_unregister(data->dev);
1532 failed_drvdata:
1533         ieee80211_free_hw(hw);
1534 failed:
1535         mac80211_hwsim_free();
1536         return err;
1537 }
1538
1539
1540 static void __exit exit_mac80211_hwsim(void)
1541 {
1542         printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
1543
1544         mac80211_hwsim_free();
1545         unregister_netdev(hwsim_mon);
1546 }
1547
1548
1549 module_init(init_mac80211_hwsim);
1550 module_exit(exit_mac80211_hwsim);