mac80211: sample survey implementation for mac80211 & hwsim
[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  * - IBSS mode simulation (Beacon transmission with competition for "air time")
13  * - RX filtering based on filter configuration (data->rx_filter)
14  */
15
16 #include <linux/list.h>
17 #include <linux/spinlock.h>
18 #include <net/dst.h>
19 #include <net/xfrm.h>
20 #include <net/mac80211.h>
21 #include <net/ieee80211_radiotap.h>
22 #include <linux/if_arp.h>
23 #include <linux/rtnetlink.h>
24 #include <linux/etherdevice.h>
25 #include <linux/debugfs.h>
26
27 MODULE_AUTHOR("Jouni Malinen");
28 MODULE_DESCRIPTION("Software simulator of 802.11 radio(s) for mac80211");
29 MODULE_LICENSE("GPL");
30
31 static int radios = 2;
32 module_param(radios, int, 0444);
33 MODULE_PARM_DESC(radios, "Number of simulated radios");
34
35 static bool fake_hw_scan;
36 module_param(fake_hw_scan, bool, 0444);
37 MODULE_PARM_DESC(fake_hw_scan, "Install fake (no-op) hw-scan handler");
38
39 /**
40  * enum hwsim_regtest - the type of regulatory tests we offer
41  *
42  * These are the different values you can use for the regtest
43  * module parameter. This is useful to help test world roaming
44  * and the driver regulatory_hint() call and combinations of these.
45  * If you want to do specific alpha2 regulatory domain tests simply
46  * use the userspace regulatory request as that will be respected as
47  * well without the need of this module parameter. This is designed
48  * only for testing the driver regulatory request, world roaming
49  * and all possible combinations.
50  *
51  * @HWSIM_REGTEST_DISABLED: No regulatory tests are performed,
52  *      this is the default value.
53  * @HWSIM_REGTEST_DRIVER_REG_FOLLOW: Used for testing the driver regulatory
54  *      hint, only one driver regulatory hint will be sent as such the
55  *      secondary radios are expected to follow.
56  * @HWSIM_REGTEST_DRIVER_REG_ALL: Used for testing the driver regulatory
57  *      request with all radios reporting the same regulatory domain.
58  * @HWSIM_REGTEST_DIFF_COUNTRY: Used for testing the drivers calling
59  *      different regulatory domains requests. Expected behaviour is for
60  *      an intersection to occur but each device will still use their
61  *      respective regulatory requested domains. Subsequent radios will
62  *      use the resulting intersection.
63  * @HWSIM_REGTEST_WORLD_ROAM: Used for testing the world roaming. We acomplish
64  *      this by using a custom beacon-capable regulatory domain for the first
65  *      radio. All other device world roam.
66  * @HWSIM_REGTEST_CUSTOM_WORLD: Used for testing the custom world regulatory
67  *      domain requests. All radios will adhere to this custom world regulatory
68  *      domain.
69  * @HWSIM_REGTEST_CUSTOM_WORLD_2: Used for testing 2 custom world regulatory
70  *      domain requests. The first radio will adhere to the first custom world
71  *      regulatory domain, the second one to the second custom world regulatory
72  *      domain. All other devices will world roam.
73  * @HWSIM_REGTEST_STRICT_FOLLOW_: Used for testing strict regulatory domain
74  *      settings, only the first radio will send a regulatory domain request
75  *      and use strict settings. The rest of the radios are expected to follow.
76  * @HWSIM_REGTEST_STRICT_ALL: Used for testing strict regulatory domain
77  *      settings. All radios will adhere to this.
78  * @HWSIM_REGTEST_STRICT_AND_DRIVER_REG: Used for testing strict regulatory
79  *      domain settings, combined with secondary driver regulatory domain
80  *      settings. The first radio will get a strict regulatory domain setting
81  *      using the first driver regulatory request and the second radio will use
82  *      non-strict settings using the second driver regulatory request. All
83  *      other devices should follow the intersection created between the
84  *      first two.
85  * @HWSIM_REGTEST_ALL: Used for testing every possible mix. You will need
86  *      at least 6 radios for a complete test. We will test in this order:
87  *      1 - driver custom world regulatory domain
88  *      2 - second custom world regulatory domain
89  *      3 - first driver regulatory domain request
90  *      4 - second driver regulatory domain request
91  *      5 - strict regulatory domain settings using the third driver regulatory
92  *          domain request
93  *      6 and on - should follow the intersection of the 3rd, 4rth and 5th radio
94  *                 regulatory requests.
95  */
96 enum hwsim_regtest {
97         HWSIM_REGTEST_DISABLED = 0,
98         HWSIM_REGTEST_DRIVER_REG_FOLLOW = 1,
99         HWSIM_REGTEST_DRIVER_REG_ALL = 2,
100         HWSIM_REGTEST_DIFF_COUNTRY = 3,
101         HWSIM_REGTEST_WORLD_ROAM = 4,
102         HWSIM_REGTEST_CUSTOM_WORLD = 5,
103         HWSIM_REGTEST_CUSTOM_WORLD_2 = 6,
104         HWSIM_REGTEST_STRICT_FOLLOW = 7,
105         HWSIM_REGTEST_STRICT_ALL = 8,
106         HWSIM_REGTEST_STRICT_AND_DRIVER_REG = 9,
107         HWSIM_REGTEST_ALL = 10,
108 };
109
110 /* Set to one of the HWSIM_REGTEST_* values above */
111 static int regtest = HWSIM_REGTEST_DISABLED;
112 module_param(regtest, int, 0444);
113 MODULE_PARM_DESC(regtest, "The type of regulatory test we want to run");
114
115 static const char *hwsim_alpha2s[] = {
116         "FI",
117         "AL",
118         "US",
119         "DE",
120         "JP",
121         "AL",
122 };
123
124 static const struct ieee80211_regdomain hwsim_world_regdom_custom_01 = {
125         .n_reg_rules = 4,
126         .alpha2 =  "99",
127         .reg_rules = {
128                 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
129                 REG_RULE(2484-10, 2484+10, 40, 0, 20, 0),
130                 REG_RULE(5150-10, 5240+10, 40, 0, 30, 0),
131                 REG_RULE(5745-10, 5825+10, 40, 0, 30, 0),
132         }
133 };
134
135 static const struct ieee80211_regdomain hwsim_world_regdom_custom_02 = {
136         .n_reg_rules = 2,
137         .alpha2 =  "99",
138         .reg_rules = {
139                 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
140                 REG_RULE(5725-10, 5850+10, 40, 0, 30,
141                         NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS),
142         }
143 };
144
145 struct hwsim_vif_priv {
146         u32 magic;
147         u8 bssid[ETH_ALEN];
148         bool assoc;
149         u16 aid;
150 };
151
152 #define HWSIM_VIF_MAGIC 0x69537748
153
154 static inline void hwsim_check_magic(struct ieee80211_vif *vif)
155 {
156         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
157         WARN_ON(vp->magic != HWSIM_VIF_MAGIC);
158 }
159
160 static inline void hwsim_set_magic(struct ieee80211_vif *vif)
161 {
162         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
163         vp->magic = HWSIM_VIF_MAGIC;
164 }
165
166 static inline void hwsim_clear_magic(struct ieee80211_vif *vif)
167 {
168         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
169         vp->magic = 0;
170 }
171
172 struct hwsim_sta_priv {
173         u32 magic;
174 };
175
176 #define HWSIM_STA_MAGIC 0x6d537748
177
178 static inline void hwsim_check_sta_magic(struct ieee80211_sta *sta)
179 {
180         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
181         WARN_ON(sp->magic != HWSIM_STA_MAGIC);
182 }
183
184 static inline void hwsim_set_sta_magic(struct ieee80211_sta *sta)
185 {
186         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
187         sp->magic = HWSIM_STA_MAGIC;
188 }
189
190 static inline void hwsim_clear_sta_magic(struct ieee80211_sta *sta)
191 {
192         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
193         sp->magic = 0;
194 }
195
196 static struct class *hwsim_class;
197
198 static struct net_device *hwsim_mon; /* global monitor netdev */
199
200 #define CHAN2G(_freq)  { \
201         .band = IEEE80211_BAND_2GHZ, \
202         .center_freq = (_freq), \
203         .hw_value = (_freq), \
204         .max_power = 20, \
205 }
206
207 #define CHAN5G(_freq) { \
208         .band = IEEE80211_BAND_5GHZ, \
209         .center_freq = (_freq), \
210         .hw_value = (_freq), \
211         .max_power = 20, \
212 }
213
214 static const struct ieee80211_channel hwsim_channels_2ghz[] = {
215         CHAN2G(2412), /* Channel 1 */
216         CHAN2G(2417), /* Channel 2 */
217         CHAN2G(2422), /* Channel 3 */
218         CHAN2G(2427), /* Channel 4 */
219         CHAN2G(2432), /* Channel 5 */
220         CHAN2G(2437), /* Channel 6 */
221         CHAN2G(2442), /* Channel 7 */
222         CHAN2G(2447), /* Channel 8 */
223         CHAN2G(2452), /* Channel 9 */
224         CHAN2G(2457), /* Channel 10 */
225         CHAN2G(2462), /* Channel 11 */
226         CHAN2G(2467), /* Channel 12 */
227         CHAN2G(2472), /* Channel 13 */
228         CHAN2G(2484), /* Channel 14 */
229 };
230
231 static const struct ieee80211_channel hwsim_channels_5ghz[] = {
232         CHAN5G(5180), /* Channel 36 */
233         CHAN5G(5200), /* Channel 40 */
234         CHAN5G(5220), /* Channel 44 */
235         CHAN5G(5240), /* Channel 48 */
236
237         CHAN5G(5260), /* Channel 52 */
238         CHAN5G(5280), /* Channel 56 */
239         CHAN5G(5300), /* Channel 60 */
240         CHAN5G(5320), /* Channel 64 */
241
242         CHAN5G(5500), /* Channel 100 */
243         CHAN5G(5520), /* Channel 104 */
244         CHAN5G(5540), /* Channel 108 */
245         CHAN5G(5560), /* Channel 112 */
246         CHAN5G(5580), /* Channel 116 */
247         CHAN5G(5600), /* Channel 120 */
248         CHAN5G(5620), /* Channel 124 */
249         CHAN5G(5640), /* Channel 128 */
250         CHAN5G(5660), /* Channel 132 */
251         CHAN5G(5680), /* Channel 136 */
252         CHAN5G(5700), /* Channel 140 */
253
254         CHAN5G(5745), /* Channel 149 */
255         CHAN5G(5765), /* Channel 153 */
256         CHAN5G(5785), /* Channel 157 */
257         CHAN5G(5805), /* Channel 161 */
258         CHAN5G(5825), /* Channel 165 */
259 };
260
261 static const struct ieee80211_rate hwsim_rates[] = {
262         { .bitrate = 10 },
263         { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
264         { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
265         { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
266         { .bitrate = 60 },
267         { .bitrate = 90 },
268         { .bitrate = 120 },
269         { .bitrate = 180 },
270         { .bitrate = 240 },
271         { .bitrate = 360 },
272         { .bitrate = 480 },
273         { .bitrate = 540 }
274 };
275
276 static spinlock_t hwsim_radio_lock;
277 static struct list_head hwsim_radios;
278
279 struct mac80211_hwsim_data {
280         struct list_head list;
281         struct ieee80211_hw *hw;
282         struct device *dev;
283         struct ieee80211_supported_band bands[2];
284         struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)];
285         struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)];
286         struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
287
288         struct mac_address addresses[2];
289
290         struct ieee80211_channel *channel;
291         unsigned long beacon_int; /* in jiffies unit */
292         unsigned int rx_filter;
293         bool started, idle, scanning;
294         struct mutex mutex;
295         struct timer_list beacon_timer;
296         enum ps_mode {
297                 PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
298         } ps;
299         bool ps_poll_pending;
300         struct dentry *debugfs;
301         struct dentry *debugfs_ps;
302
303         /*
304          * Only radios in the same group can communicate together (the
305          * channel has to match too). Each bit represents a group. A
306          * radio can be in more then one group.
307          */
308         u64 group;
309         struct dentry *debugfs_group;
310 };
311
312
313 struct hwsim_radiotap_hdr {
314         struct ieee80211_radiotap_header hdr;
315         u8 rt_flags;
316         u8 rt_rate;
317         __le16 rt_channel;
318         __le16 rt_chbitmask;
319 } __attribute__ ((packed));
320
321
322 static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
323                                         struct net_device *dev)
324 {
325         /* TODO: allow packet injection */
326         dev_kfree_skb(skb);
327         return NETDEV_TX_OK;
328 }
329
330
331 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
332                                       struct sk_buff *tx_skb)
333 {
334         struct mac80211_hwsim_data *data = hw->priv;
335         struct sk_buff *skb;
336         struct hwsim_radiotap_hdr *hdr;
337         u16 flags;
338         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
339         struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
340
341         if (!netif_running(hwsim_mon))
342                 return;
343
344         skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
345         if (skb == NULL)
346                 return;
347
348         hdr = (struct hwsim_radiotap_hdr *) skb_push(skb, sizeof(*hdr));
349         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
350         hdr->hdr.it_pad = 0;
351         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
352         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
353                                           (1 << IEEE80211_RADIOTAP_RATE) |
354                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
355         hdr->rt_flags = 0;
356         hdr->rt_rate = txrate->bitrate / 5;
357         hdr->rt_channel = cpu_to_le16(data->channel->center_freq);
358         flags = IEEE80211_CHAN_2GHZ;
359         if (txrate->flags & IEEE80211_RATE_ERP_G)
360                 flags |= IEEE80211_CHAN_OFDM;
361         else
362                 flags |= IEEE80211_CHAN_CCK;
363         hdr->rt_chbitmask = cpu_to_le16(flags);
364
365         skb->dev = hwsim_mon;
366         skb_set_mac_header(skb, 0);
367         skb->ip_summed = CHECKSUM_UNNECESSARY;
368         skb->pkt_type = PACKET_OTHERHOST;
369         skb->protocol = htons(ETH_P_802_2);
370         memset(skb->cb, 0, sizeof(skb->cb));
371         netif_rx(skb);
372 }
373
374
375 static void mac80211_hwsim_monitor_ack(struct ieee80211_hw *hw, const u8 *addr)
376 {
377         struct mac80211_hwsim_data *data = hw->priv;
378         struct sk_buff *skb;
379         struct hwsim_radiotap_hdr *hdr;
380         u16 flags;
381         struct ieee80211_hdr *hdr11;
382
383         if (!netif_running(hwsim_mon))
384                 return;
385
386         skb = dev_alloc_skb(100);
387         if (skb == NULL)
388                 return;
389
390         hdr = (struct hwsim_radiotap_hdr *) skb_put(skb, sizeof(*hdr));
391         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
392         hdr->hdr.it_pad = 0;
393         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
394         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
395                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
396         hdr->rt_flags = 0;
397         hdr->rt_rate = 0;
398         hdr->rt_channel = cpu_to_le16(data->channel->center_freq);
399         flags = IEEE80211_CHAN_2GHZ;
400         hdr->rt_chbitmask = cpu_to_le16(flags);
401
402         hdr11 = (struct ieee80211_hdr *) skb_put(skb, 10);
403         hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
404                                            IEEE80211_STYPE_ACK);
405         hdr11->duration_id = cpu_to_le16(0);
406         memcpy(hdr11->addr1, addr, ETH_ALEN);
407
408         skb->dev = hwsim_mon;
409         skb_set_mac_header(skb, 0);
410         skb->ip_summed = CHECKSUM_UNNECESSARY;
411         skb->pkt_type = PACKET_OTHERHOST;
412         skb->protocol = htons(ETH_P_802_2);
413         memset(skb->cb, 0, sizeof(skb->cb));
414         netif_rx(skb);
415 }
416
417
418 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
419                            struct sk_buff *skb)
420 {
421         switch (data->ps) {
422         case PS_DISABLED:
423                 return true;
424         case PS_ENABLED:
425                 return false;
426         case PS_AUTO_POLL:
427                 /* TODO: accept (some) Beacons by default and other frames only
428                  * if pending PS-Poll has been sent */
429                 return true;
430         case PS_MANUAL_POLL:
431                 /* Allow unicast frames to own address if there is a pending
432                  * PS-Poll */
433                 if (data->ps_poll_pending &&
434                     memcmp(data->hw->wiphy->perm_addr, skb->data + 4,
435                            ETH_ALEN) == 0) {
436                         data->ps_poll_pending = false;
437                         return true;
438                 }
439                 return false;
440         }
441
442         return true;
443 }
444
445
446 struct mac80211_hwsim_addr_match_data {
447         bool ret;
448         const u8 *addr;
449 };
450
451 static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
452                                      struct ieee80211_vif *vif)
453 {
454         struct mac80211_hwsim_addr_match_data *md = data;
455         if (memcmp(mac, md->addr, ETH_ALEN) == 0)
456                 md->ret = true;
457 }
458
459
460 static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
461                                       const u8 *addr)
462 {
463         struct mac80211_hwsim_addr_match_data md;
464
465         if (memcmp(addr, data->hw->wiphy->perm_addr, ETH_ALEN) == 0)
466                 return true;
467
468         md.ret = false;
469         md.addr = addr;
470         ieee80211_iterate_active_interfaces_atomic(data->hw,
471                                                    mac80211_hwsim_addr_iter,
472                                                    &md);
473
474         return md.ret;
475 }
476
477
478 static bool mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
479                                     struct sk_buff *skb)
480 {
481         struct mac80211_hwsim_data *data = hw->priv, *data2;
482         bool ack = false;
483         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
484         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
485         struct ieee80211_rx_status rx_status;
486
487         if (data->idle) {
488                 printk(KERN_DEBUG "%s: Trying to TX when idle - reject\n",
489                        wiphy_name(hw->wiphy));
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         printk(KERN_DEBUG "%s:%s\n", wiphy_name(hw->wiphy), __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         printk(KERN_DEBUG "%s:%s\n", wiphy_name(hw->wiphy), __func__);
590 }
591
592
593 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
594                                         struct ieee80211_vif *vif)
595 {
596         printk(KERN_DEBUG "%s:%s (type=%d mac_addr=%pM)\n",
597                wiphy_name(hw->wiphy), __func__, vif->type,
598                vif->addr);
599         hwsim_set_magic(vif);
600         return 0;
601 }
602
603
604 static void mac80211_hwsim_remove_interface(
605         struct ieee80211_hw *hw, struct ieee80211_vif *vif)
606 {
607         printk(KERN_DEBUG "%s:%s (type=%d mac_addr=%pM)\n",
608                wiphy_name(hw->wiphy), __func__, vif->type,
609                vif->addr);
610         hwsim_check_magic(vif);
611         hwsim_clear_magic(vif);
612 }
613
614
615 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
616                                      struct ieee80211_vif *vif)
617 {
618         struct ieee80211_hw *hw = arg;
619         struct sk_buff *skb;
620         struct ieee80211_tx_info *info;
621
622         hwsim_check_magic(vif);
623
624         if (vif->type != NL80211_IFTYPE_AP &&
625             vif->type != NL80211_IFTYPE_MESH_POINT)
626                 return;
627
628         skb = ieee80211_beacon_get(hw, vif);
629         if (skb == NULL)
630                 return;
631         info = IEEE80211_SKB_CB(skb);
632
633         mac80211_hwsim_monitor_rx(hw, skb);
634         mac80211_hwsim_tx_frame(hw, skb);
635         dev_kfree_skb(skb);
636 }
637
638
639 static void mac80211_hwsim_beacon(unsigned long arg)
640 {
641         struct ieee80211_hw *hw = (struct ieee80211_hw *) arg;
642         struct mac80211_hwsim_data *data = hw->priv;
643
644         if (!data->started)
645                 return;
646
647         ieee80211_iterate_active_interfaces_atomic(
648                 hw, mac80211_hwsim_beacon_tx, hw);
649
650         data->beacon_timer.expires = jiffies + data->beacon_int;
651         add_timer(&data->beacon_timer);
652 }
653
654
655 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
656 {
657         struct mac80211_hwsim_data *data = hw->priv;
658         struct ieee80211_conf *conf = &hw->conf;
659         static const char *chantypes[4] = {
660                 [NL80211_CHAN_NO_HT] = "noht",
661                 [NL80211_CHAN_HT20] = "ht20",
662                 [NL80211_CHAN_HT40MINUS] = "ht40-",
663                 [NL80211_CHAN_HT40PLUS] = "ht40+",
664         };
665         static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
666                 [IEEE80211_SMPS_AUTOMATIC] = "auto",
667                 [IEEE80211_SMPS_OFF] = "off",
668                 [IEEE80211_SMPS_STATIC] = "static",
669                 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
670         };
671
672         printk(KERN_DEBUG "%s:%s (freq=%d/%s idle=%d ps=%d smps=%s)\n",
673                wiphy_name(hw->wiphy), __func__,
674                conf->channel->center_freq,
675                chantypes[conf->channel_type],
676                !!(conf->flags & IEEE80211_CONF_IDLE),
677                !!(conf->flags & IEEE80211_CONF_PS),
678                smps_modes[conf->smps_mode]);
679
680         data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
681
682         data->channel = conf->channel;
683         if (!data->started || !data->beacon_int)
684                 del_timer(&data->beacon_timer);
685         else
686                 mod_timer(&data->beacon_timer, jiffies + data->beacon_int);
687
688         return 0;
689 }
690
691
692 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
693                                             unsigned int changed_flags,
694                                             unsigned int *total_flags,u64 multicast)
695 {
696         struct mac80211_hwsim_data *data = hw->priv;
697
698         printk(KERN_DEBUG "%s:%s\n", wiphy_name(hw->wiphy), __func__);
699
700         data->rx_filter = 0;
701         if (*total_flags & FIF_PROMISC_IN_BSS)
702                 data->rx_filter |= FIF_PROMISC_IN_BSS;
703         if (*total_flags & FIF_ALLMULTI)
704                 data->rx_filter |= FIF_ALLMULTI;
705
706         *total_flags = data->rx_filter;
707 }
708
709 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
710                                             struct ieee80211_vif *vif,
711                                             struct ieee80211_bss_conf *info,
712                                             u32 changed)
713 {
714         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
715         struct mac80211_hwsim_data *data = hw->priv;
716
717         hwsim_check_magic(vif);
718
719         printk(KERN_DEBUG "%s:%s(changed=0x%x)\n",
720                wiphy_name(hw->wiphy), __func__, changed);
721
722         if (changed & BSS_CHANGED_BSSID) {
723                 printk(KERN_DEBUG "%s:%s: BSSID changed: %pM\n",
724                        wiphy_name(hw->wiphy), __func__,
725                        info->bssid);
726                 memcpy(vp->bssid, info->bssid, ETH_ALEN);
727         }
728
729         if (changed & BSS_CHANGED_ASSOC) {
730                 printk(KERN_DEBUG "  %s: ASSOC: assoc=%d aid=%d\n",
731                        wiphy_name(hw->wiphy), info->assoc, info->aid);
732                 vp->assoc = info->assoc;
733                 vp->aid = info->aid;
734         }
735
736         if (changed & BSS_CHANGED_BEACON_INT) {
737                 printk(KERN_DEBUG "  %s: BCNINT: %d\n",
738                        wiphy_name(hw->wiphy), info->beacon_int);
739                 data->beacon_int = 1024 * info->beacon_int / 1000 * HZ / 1000;
740                 if (WARN_ON(!data->beacon_int))
741                         data->beacon_int = 1;
742                 if (data->started)
743                         mod_timer(&data->beacon_timer,
744                                   jiffies + data->beacon_int);
745         }
746
747         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
748                 printk(KERN_DEBUG "  %s: ERP_CTS_PROT: %d\n",
749                        wiphy_name(hw->wiphy), info->use_cts_prot);
750         }
751
752         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
753                 printk(KERN_DEBUG "  %s: ERP_PREAMBLE: %d\n",
754                        wiphy_name(hw->wiphy), info->use_short_preamble);
755         }
756
757         if (changed & BSS_CHANGED_ERP_SLOT) {
758                 printk(KERN_DEBUG "  %s: ERP_SLOT: %d\n",
759                        wiphy_name(hw->wiphy), info->use_short_slot);
760         }
761
762         if (changed & BSS_CHANGED_HT) {
763                 printk(KERN_DEBUG "  %s: HT: op_mode=0x%x\n",
764                        wiphy_name(hw->wiphy),
765                        info->ht_operation_mode);
766         }
767
768         if (changed & BSS_CHANGED_BASIC_RATES) {
769                 printk(KERN_DEBUG "  %s: BASIC_RATES: 0x%llx\n",
770                        wiphy_name(hw->wiphy),
771                        (unsigned long long) info->basic_rates);
772         }
773 }
774
775 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
776                                   struct ieee80211_vif *vif,
777                                   struct ieee80211_sta *sta)
778 {
779         hwsim_check_magic(vif);
780         hwsim_set_sta_magic(sta);
781
782         return 0;
783 }
784
785 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
786                                      struct ieee80211_vif *vif,
787                                      struct ieee80211_sta *sta)
788 {
789         hwsim_check_magic(vif);
790         hwsim_clear_sta_magic(sta);
791
792         return 0;
793 }
794
795 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
796                                       struct ieee80211_vif *vif,
797                                       enum sta_notify_cmd cmd,
798                                       struct ieee80211_sta *sta)
799 {
800         hwsim_check_magic(vif);
801
802         switch (cmd) {
803         case STA_NOTIFY_SLEEP:
804         case STA_NOTIFY_AWAKE:
805                 /* TODO: make good use of these flags */
806                 break;
807         default:
808                 WARN(1, "Invalid sta notify: %d\n", cmd);
809                 break;
810         }
811 }
812
813 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
814                                   struct ieee80211_sta *sta,
815                                   bool set)
816 {
817         hwsim_check_sta_magic(sta);
818         return 0;
819 }
820
821 static int mac80211_hwsim_conf_tx(
822         struct ieee80211_hw *hw, u16 queue,
823         const struct ieee80211_tx_queue_params *params)
824 {
825         printk(KERN_DEBUG "%s:%s (queue=%d txop=%d cw_min=%d cw_max=%d "
826                "aifs=%d)\n",
827                wiphy_name(hw->wiphy), __func__, queue,
828                params->txop, params->cw_min, params->cw_max, params->aifs);
829         return 0;
830 }
831
832 static int mac80211_hwsim_get_survey(
833         struct ieee80211_hw *hw, int idx,
834         struct survey_info *survey)
835 {
836         struct ieee80211_conf *conf = &hw->conf;
837
838         printk(KERN_DEBUG "%s:%s (idx=%d)\n",
839                wiphy_name(hw->wiphy), __func__, idx);
840
841         if (idx != 0)
842                 return -ENOENT;
843
844         /* Current channel */
845         survey->channel = conf->channel;
846
847         /*
848          * Magically conjured noise level --- this is only ok for simulated hardware.
849          *
850          * A real driver which cannot determine the real channel noise MUST NOT
851          * report any noise, especially not a magically conjured one :-)
852          */
853         survey->filled = SURVEY_INFO_NOISE_DBM;
854         survey->noise = -92;
855
856         return 0;
857 }
858
859 #ifdef CONFIG_NL80211_TESTMODE
860 /*
861  * This section contains example code for using netlink
862  * attributes with the testmode command in nl80211.
863  */
864
865 /* These enums need to be kept in sync with userspace */
866 enum hwsim_testmode_attr {
867         __HWSIM_TM_ATTR_INVALID = 0,
868         HWSIM_TM_ATTR_CMD       = 1,
869         HWSIM_TM_ATTR_PS        = 2,
870
871         /* keep last */
872         __HWSIM_TM_ATTR_AFTER_LAST,
873         HWSIM_TM_ATTR_MAX       = __HWSIM_TM_ATTR_AFTER_LAST - 1
874 };
875
876 enum hwsim_testmode_cmd {
877         HWSIM_TM_CMD_SET_PS             = 0,
878         HWSIM_TM_CMD_GET_PS             = 1,
879 };
880
881 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
882         [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
883         [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
884 };
885
886 static int hwsim_fops_ps_write(void *dat, u64 val);
887
888 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
889                                        void *data, int len)
890 {
891         struct mac80211_hwsim_data *hwsim = hw->priv;
892         struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
893         struct sk_buff *skb;
894         int err, ps;
895
896         err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
897                         hwsim_testmode_policy);
898         if (err)
899                 return err;
900
901         if (!tb[HWSIM_TM_ATTR_CMD])
902                 return -EINVAL;
903
904         switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
905         case HWSIM_TM_CMD_SET_PS:
906                 if (!tb[HWSIM_TM_ATTR_PS])
907                         return -EINVAL;
908                 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
909                 return hwsim_fops_ps_write(hwsim, ps);
910         case HWSIM_TM_CMD_GET_PS:
911                 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
912                                                 nla_total_size(sizeof(u32)));
913                 if (!skb)
914                         return -ENOMEM;
915                 NLA_PUT_U32(skb, HWSIM_TM_ATTR_PS, hwsim->ps);
916                 return cfg80211_testmode_reply(skb);
917         default:
918                 return -EOPNOTSUPP;
919         }
920
921  nla_put_failure:
922         kfree_skb(skb);
923         return -ENOBUFS;
924 }
925 #endif
926
927 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
928                                        struct ieee80211_vif *vif,
929                                        enum ieee80211_ampdu_mlme_action action,
930                                        struct ieee80211_sta *sta, u16 tid, u16 *ssn)
931 {
932         switch (action) {
933         case IEEE80211_AMPDU_TX_START:
934                 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
935                 break;
936         case IEEE80211_AMPDU_TX_STOP:
937                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
938                 break;
939         case IEEE80211_AMPDU_TX_OPERATIONAL:
940                 break;
941         case IEEE80211_AMPDU_RX_START:
942         case IEEE80211_AMPDU_RX_STOP:
943                 break;
944         default:
945                 return -EOPNOTSUPP;
946         }
947
948         return 0;
949 }
950
951 static void mac80211_hwsim_flush(struct ieee80211_hw *hw, bool drop)
952 {
953         /*
954          * In this special case, there's nothing we need to
955          * do because hwsim does transmission synchronously.
956          * In the future, when it does transmissions via
957          * userspace, we may need to do something.
958          */
959 }
960
961 struct hw_scan_done {
962         struct delayed_work w;
963         struct ieee80211_hw *hw;
964 };
965
966 static void hw_scan_done(struct work_struct *work)
967 {
968         struct hw_scan_done *hsd =
969                 container_of(work, struct hw_scan_done, w.work);
970
971         ieee80211_scan_completed(hsd->hw, false);
972         kfree(hsd);
973 }
974
975 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
976                                   struct cfg80211_scan_request *req)
977 {
978         struct hw_scan_done *hsd = kzalloc(sizeof(*hsd), GFP_KERNEL);
979         int i;
980
981         if (!hsd)
982                 return -ENOMEM;
983
984         hsd->hw = hw;
985         INIT_DELAYED_WORK(&hsd->w, hw_scan_done);
986
987         printk(KERN_DEBUG "hwsim hw_scan request\n");
988         for (i = 0; i < req->n_channels; i++)
989                 printk(KERN_DEBUG "hwsim hw_scan freq %d\n",
990                         req->channels[i]->center_freq);
991
992         ieee80211_queue_delayed_work(hw, &hsd->w, 2 * HZ);
993
994         return 0;
995 }
996
997 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw)
998 {
999         struct mac80211_hwsim_data *hwsim = hw->priv;
1000
1001         mutex_lock(&hwsim->mutex);
1002
1003         if (hwsim->scanning) {
1004                 printk(KERN_DEBUG "two hwsim sw_scans detected!\n");
1005                 goto out;
1006         }
1007
1008         printk(KERN_DEBUG "hwsim sw_scan request, prepping stuff\n");
1009         hwsim->scanning = true;
1010
1011 out:
1012         mutex_unlock(&hwsim->mutex);
1013 }
1014
1015 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw)
1016 {
1017         struct mac80211_hwsim_data *hwsim = hw->priv;
1018
1019         mutex_lock(&hwsim->mutex);
1020
1021         printk(KERN_DEBUG "hwsim sw_scan_complete\n");
1022         hwsim->scanning = true;
1023
1024         mutex_unlock(&hwsim->mutex);
1025 }
1026
1027 static struct ieee80211_ops mac80211_hwsim_ops =
1028 {
1029         .tx = mac80211_hwsim_tx,
1030         .start = mac80211_hwsim_start,
1031         .stop = mac80211_hwsim_stop,
1032         .add_interface = mac80211_hwsim_add_interface,
1033         .remove_interface = mac80211_hwsim_remove_interface,
1034         .config = mac80211_hwsim_config,
1035         .configure_filter = mac80211_hwsim_configure_filter,
1036         .bss_info_changed = mac80211_hwsim_bss_info_changed,
1037         .sta_add = mac80211_hwsim_sta_add,
1038         .sta_remove = mac80211_hwsim_sta_remove,
1039         .sta_notify = mac80211_hwsim_sta_notify,
1040         .set_tim = mac80211_hwsim_set_tim,
1041         .conf_tx = mac80211_hwsim_conf_tx,
1042         .get_survey = mac80211_hwsim_get_survey,
1043         CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)
1044         .ampdu_action = mac80211_hwsim_ampdu_action,
1045         .sw_scan_start = mac80211_hwsim_sw_scan,
1046         .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
1047         .flush = mac80211_hwsim_flush,
1048 };
1049
1050
1051 static void mac80211_hwsim_free(void)
1052 {
1053         struct list_head tmplist, *i, *tmp;
1054         struct mac80211_hwsim_data *data, *tmpdata;
1055
1056         INIT_LIST_HEAD(&tmplist);
1057
1058         spin_lock_bh(&hwsim_radio_lock);
1059         list_for_each_safe(i, tmp, &hwsim_radios)
1060                 list_move(i, &tmplist);
1061         spin_unlock_bh(&hwsim_radio_lock);
1062
1063         list_for_each_entry_safe(data, tmpdata, &tmplist, list) {
1064                 debugfs_remove(data->debugfs_group);
1065                 debugfs_remove(data->debugfs_ps);
1066                 debugfs_remove(data->debugfs);
1067                 ieee80211_unregister_hw(data->hw);
1068                 device_unregister(data->dev);
1069                 ieee80211_free_hw(data->hw);
1070         }
1071         class_destroy(hwsim_class);
1072 }
1073
1074
1075 static struct device_driver mac80211_hwsim_driver = {
1076         .name = "mac80211_hwsim"
1077 };
1078
1079 static const struct net_device_ops hwsim_netdev_ops = {
1080         .ndo_start_xmit         = hwsim_mon_xmit,
1081         .ndo_change_mtu         = eth_change_mtu,
1082         .ndo_set_mac_address    = eth_mac_addr,
1083         .ndo_validate_addr      = eth_validate_addr,
1084 };
1085
1086 static void hwsim_mon_setup(struct net_device *dev)
1087 {
1088         dev->netdev_ops = &hwsim_netdev_ops;
1089         dev->destructor = free_netdev;
1090         ether_setup(dev);
1091         dev->tx_queue_len = 0;
1092         dev->type = ARPHRD_IEEE80211_RADIOTAP;
1093         memset(dev->dev_addr, 0, ETH_ALEN);
1094         dev->dev_addr[0] = 0x12;
1095 }
1096
1097
1098 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
1099 {
1100         struct mac80211_hwsim_data *data = dat;
1101         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1102         struct sk_buff *skb;
1103         struct ieee80211_pspoll *pspoll;
1104
1105         if (!vp->assoc)
1106                 return;
1107
1108         printk(KERN_DEBUG "%s:%s: send PS-Poll to %pM for aid %d\n",
1109                wiphy_name(data->hw->wiphy), __func__, vp->bssid, vp->aid);
1110
1111         skb = dev_alloc_skb(sizeof(*pspoll));
1112         if (!skb)
1113                 return;
1114         pspoll = (void *) skb_put(skb, sizeof(*pspoll));
1115         pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
1116                                             IEEE80211_STYPE_PSPOLL |
1117                                             IEEE80211_FCTL_PM);
1118         pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
1119         memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
1120         memcpy(pspoll->ta, mac, ETH_ALEN);
1121         if (!mac80211_hwsim_tx_frame(data->hw, skb))
1122                 printk(KERN_DEBUG "%s: PS-Poll frame not ack'ed\n", __func__);
1123         dev_kfree_skb(skb);
1124 }
1125
1126
1127 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
1128                                 struct ieee80211_vif *vif, int ps)
1129 {
1130         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1131         struct sk_buff *skb;
1132         struct ieee80211_hdr *hdr;
1133
1134         if (!vp->assoc)
1135                 return;
1136
1137         printk(KERN_DEBUG "%s:%s: send data::nullfunc to %pM ps=%d\n",
1138                wiphy_name(data->hw->wiphy), __func__, vp->bssid, ps);
1139
1140         skb = dev_alloc_skb(sizeof(*hdr));
1141         if (!skb)
1142                 return;
1143         hdr = (void *) skb_put(skb, sizeof(*hdr) - ETH_ALEN);
1144         hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
1145                                          IEEE80211_STYPE_NULLFUNC |
1146                                          (ps ? IEEE80211_FCTL_PM : 0));
1147         hdr->duration_id = cpu_to_le16(0);
1148         memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
1149         memcpy(hdr->addr2, mac, ETH_ALEN);
1150         memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
1151         if (!mac80211_hwsim_tx_frame(data->hw, skb))
1152                 printk(KERN_DEBUG "%s: nullfunc frame not ack'ed\n", __func__);
1153         dev_kfree_skb(skb);
1154 }
1155
1156
1157 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
1158                                    struct ieee80211_vif *vif)
1159 {
1160         struct mac80211_hwsim_data *data = dat;
1161         hwsim_send_nullfunc(data, mac, vif, 1);
1162 }
1163
1164
1165 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
1166                                       struct ieee80211_vif *vif)
1167 {
1168         struct mac80211_hwsim_data *data = dat;
1169         hwsim_send_nullfunc(data, mac, vif, 0);
1170 }
1171
1172
1173 static int hwsim_fops_ps_read(void *dat, u64 *val)
1174 {
1175         struct mac80211_hwsim_data *data = dat;
1176         *val = data->ps;
1177         return 0;
1178 }
1179
1180 static int hwsim_fops_ps_write(void *dat, u64 val)
1181 {
1182         struct mac80211_hwsim_data *data = dat;
1183         enum ps_mode old_ps;
1184
1185         if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
1186             val != PS_MANUAL_POLL)
1187                 return -EINVAL;
1188
1189         old_ps = data->ps;
1190         data->ps = val;
1191
1192         if (val == PS_MANUAL_POLL) {
1193                 ieee80211_iterate_active_interfaces(data->hw,
1194                                                     hwsim_send_ps_poll, data);
1195                 data->ps_poll_pending = true;
1196         } else if (old_ps == PS_DISABLED && val != PS_DISABLED) {
1197                 ieee80211_iterate_active_interfaces(data->hw,
1198                                                     hwsim_send_nullfunc_ps,
1199                                                     data);
1200         } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
1201                 ieee80211_iterate_active_interfaces(data->hw,
1202                                                     hwsim_send_nullfunc_no_ps,
1203                                                     data);
1204         }
1205
1206         return 0;
1207 }
1208
1209 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
1210                         "%llu\n");
1211
1212
1213 static int hwsim_fops_group_read(void *dat, u64 *val)
1214 {
1215         struct mac80211_hwsim_data *data = dat;
1216         *val = data->group;
1217         return 0;
1218 }
1219
1220 static int hwsim_fops_group_write(void *dat, u64 val)
1221 {
1222         struct mac80211_hwsim_data *data = dat;
1223         data->group = val;
1224         return 0;
1225 }
1226
1227 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
1228                         hwsim_fops_group_read, hwsim_fops_group_write,
1229                         "%llx\n");
1230
1231 static int __init init_mac80211_hwsim(void)
1232 {
1233         int i, err = 0;
1234         u8 addr[ETH_ALEN];
1235         struct mac80211_hwsim_data *data;
1236         struct ieee80211_hw *hw;
1237         enum ieee80211_band band;
1238
1239         if (radios < 1 || radios > 100)
1240                 return -EINVAL;
1241
1242         if (fake_hw_scan) {
1243                 mac80211_hwsim_ops.hw_scan = mac80211_hwsim_hw_scan;
1244                 mac80211_hwsim_ops.sw_scan_start = NULL;
1245                 mac80211_hwsim_ops.sw_scan_complete = NULL;
1246         }
1247
1248         spin_lock_init(&hwsim_radio_lock);
1249         INIT_LIST_HEAD(&hwsim_radios);
1250
1251         hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
1252         if (IS_ERR(hwsim_class))
1253                 return PTR_ERR(hwsim_class);
1254
1255         memset(addr, 0, ETH_ALEN);
1256         addr[0] = 0x02;
1257
1258         for (i = 0; i < radios; i++) {
1259                 printk(KERN_DEBUG "mac80211_hwsim: Initializing radio %d\n",
1260                        i);
1261                 hw = ieee80211_alloc_hw(sizeof(*data), &mac80211_hwsim_ops);
1262                 if (!hw) {
1263                         printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw "
1264                                "failed\n");
1265                         err = -ENOMEM;
1266                         goto failed;
1267                 }
1268                 data = hw->priv;
1269                 data->hw = hw;
1270
1271                 data->dev = device_create(hwsim_class, NULL, 0, hw,
1272                                           "hwsim%d", i);
1273                 if (IS_ERR(data->dev)) {
1274                         printk(KERN_DEBUG
1275                                "mac80211_hwsim: device_create "
1276                                "failed (%ld)\n", PTR_ERR(data->dev));
1277                         err = -ENOMEM;
1278                         goto failed_drvdata;
1279                 }
1280                 data->dev->driver = &mac80211_hwsim_driver;
1281
1282                 SET_IEEE80211_DEV(hw, data->dev);
1283                 addr[3] = i >> 8;
1284                 addr[4] = i;
1285                 memcpy(data->addresses[0].addr, addr, ETH_ALEN);
1286                 memcpy(data->addresses[1].addr, addr, ETH_ALEN);
1287                 data->addresses[1].addr[0] |= 0x40;
1288                 hw->wiphy->n_addresses = 2;
1289                 hw->wiphy->addresses = data->addresses;
1290
1291                 hw->channel_change_time = 1;
1292                 hw->queues = 4;
1293                 hw->wiphy->interface_modes =
1294                         BIT(NL80211_IFTYPE_STATION) |
1295                         BIT(NL80211_IFTYPE_AP) |
1296                         BIT(NL80211_IFTYPE_MESH_POINT);
1297
1298                 hw->flags = IEEE80211_HW_MFP_CAPABLE |
1299                             IEEE80211_HW_SIGNAL_DBM |
1300                             IEEE80211_HW_SUPPORTS_STATIC_SMPS |
1301                             IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS;
1302
1303                 /* ask mac80211 to reserve space for magic */
1304                 hw->vif_data_size = sizeof(struct hwsim_vif_priv);
1305                 hw->sta_data_size = sizeof(struct hwsim_sta_priv);
1306
1307                 memcpy(data->channels_2ghz, hwsim_channels_2ghz,
1308                         sizeof(hwsim_channels_2ghz));
1309                 memcpy(data->channels_5ghz, hwsim_channels_5ghz,
1310                         sizeof(hwsim_channels_5ghz));
1311                 memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
1312
1313                 for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) {
1314                         struct ieee80211_supported_band *sband = &data->bands[band];
1315                         switch (band) {
1316                         case IEEE80211_BAND_2GHZ:
1317                                 sband->channels = data->channels_2ghz;
1318                                 sband->n_channels =
1319                                         ARRAY_SIZE(hwsim_channels_2ghz);
1320                                 sband->bitrates = data->rates;
1321                                 sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
1322                                 break;
1323                         case IEEE80211_BAND_5GHZ:
1324                                 sband->channels = data->channels_5ghz;
1325                                 sband->n_channels =
1326                                         ARRAY_SIZE(hwsim_channels_5ghz);
1327                                 sband->bitrates = data->rates + 4;
1328                                 sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
1329                                 break;
1330                         default:
1331                                 break;
1332                         }
1333
1334                         sband->ht_cap.ht_supported = true;
1335                         sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
1336                                 IEEE80211_HT_CAP_GRN_FLD |
1337                                 IEEE80211_HT_CAP_SGI_40 |
1338                                 IEEE80211_HT_CAP_DSSSCCK40;
1339                         sband->ht_cap.ampdu_factor = 0x3;
1340                         sband->ht_cap.ampdu_density = 0x6;
1341                         memset(&sband->ht_cap.mcs, 0,
1342                                sizeof(sband->ht_cap.mcs));
1343                         sband->ht_cap.mcs.rx_mask[0] = 0xff;
1344                         sband->ht_cap.mcs.rx_mask[1] = 0xff;
1345                         sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
1346
1347                         hw->wiphy->bands[band] = sband;
1348                 }
1349                 /* By default all radios are belonging to the first group */
1350                 data->group = 1;
1351                 mutex_init(&data->mutex);
1352
1353                 /* Work to be done prior to ieee80211_register_hw() */
1354                 switch (regtest) {
1355                 case HWSIM_REGTEST_DISABLED:
1356                 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
1357                 case HWSIM_REGTEST_DRIVER_REG_ALL:
1358                 case HWSIM_REGTEST_DIFF_COUNTRY:
1359                         /*
1360                          * Nothing to be done for driver regulatory domain
1361                          * hints prior to ieee80211_register_hw()
1362                          */
1363                         break;
1364                 case HWSIM_REGTEST_WORLD_ROAM:
1365                         if (i == 0) {
1366                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1367                                 wiphy_apply_custom_regulatory(hw->wiphy,
1368                                         &hwsim_world_regdom_custom_01);
1369                         }
1370                         break;
1371                 case HWSIM_REGTEST_CUSTOM_WORLD:
1372                         hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1373                         wiphy_apply_custom_regulatory(hw->wiphy,
1374                                 &hwsim_world_regdom_custom_01);
1375                         break;
1376                 case HWSIM_REGTEST_CUSTOM_WORLD_2:
1377                         if (i == 0) {
1378                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1379                                 wiphy_apply_custom_regulatory(hw->wiphy,
1380                                         &hwsim_world_regdom_custom_01);
1381                         } else if (i == 1) {
1382                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1383                                 wiphy_apply_custom_regulatory(hw->wiphy,
1384                                         &hwsim_world_regdom_custom_02);
1385                         }
1386                         break;
1387                 case HWSIM_REGTEST_STRICT_ALL:
1388                         hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1389                         break;
1390                 case HWSIM_REGTEST_STRICT_FOLLOW:
1391                 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
1392                         if (i == 0)
1393                                 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1394                         break;
1395                 case HWSIM_REGTEST_ALL:
1396                         if (i == 0) {
1397                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1398                                 wiphy_apply_custom_regulatory(hw->wiphy,
1399                                         &hwsim_world_regdom_custom_01);
1400                         } else if (i == 1) {
1401                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1402                                 wiphy_apply_custom_regulatory(hw->wiphy,
1403                                         &hwsim_world_regdom_custom_02);
1404                         } else if (i == 4)
1405                                 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1406                         break;
1407                 default:
1408                         break;
1409                 }
1410
1411                 /* give the regulatory workqueue a chance to run */
1412                 if (regtest)
1413                         schedule_timeout_interruptible(1);
1414                 err = ieee80211_register_hw(hw);
1415                 if (err < 0) {
1416                         printk(KERN_DEBUG "mac80211_hwsim: "
1417                                "ieee80211_register_hw failed (%d)\n", err);
1418                         goto failed_hw;
1419                 }
1420
1421                 /* Work to be done after to ieee80211_register_hw() */
1422                 switch (regtest) {
1423                 case HWSIM_REGTEST_WORLD_ROAM:
1424                 case HWSIM_REGTEST_DISABLED:
1425                         break;
1426                 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
1427                         if (!i)
1428                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1429                         break;
1430                 case HWSIM_REGTEST_DRIVER_REG_ALL:
1431                 case HWSIM_REGTEST_STRICT_ALL:
1432                         regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1433                         break;
1434                 case HWSIM_REGTEST_DIFF_COUNTRY:
1435                         if (i < ARRAY_SIZE(hwsim_alpha2s))
1436                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[i]);
1437                         break;
1438                 case HWSIM_REGTEST_CUSTOM_WORLD:
1439                 case HWSIM_REGTEST_CUSTOM_WORLD_2:
1440                         /*
1441                          * Nothing to be done for custom world regulatory
1442                          * domains after to ieee80211_register_hw
1443                          */
1444                         break;
1445                 case HWSIM_REGTEST_STRICT_FOLLOW:
1446                         if (i == 0)
1447                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1448                         break;
1449                 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
1450                         if (i == 0)
1451                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1452                         else if (i == 1)
1453                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
1454                         break;
1455                 case HWSIM_REGTEST_ALL:
1456                         if (i == 2)
1457                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1458                         else if (i == 3)
1459                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
1460                         else if (i == 4)
1461                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[2]);
1462                         break;
1463                 default:
1464                         break;
1465                 }
1466
1467                 printk(KERN_DEBUG "%s: hwaddr %pM registered\n",
1468                        wiphy_name(hw->wiphy),
1469                        hw->wiphy->perm_addr);
1470
1471                 data->debugfs = debugfs_create_dir("hwsim",
1472                                                    hw->wiphy->debugfsdir);
1473                 data->debugfs_ps = debugfs_create_file("ps", 0666,
1474                                                        data->debugfs, data,
1475                                                        &hwsim_fops_ps);
1476                 data->debugfs_group = debugfs_create_file("group", 0666,
1477                                                         data->debugfs, data,
1478                                                         &hwsim_fops_group);
1479
1480                 setup_timer(&data->beacon_timer, mac80211_hwsim_beacon,
1481                             (unsigned long) hw);
1482
1483                 list_add_tail(&data->list, &hwsim_radios);
1484         }
1485
1486         hwsim_mon = alloc_netdev(0, "hwsim%d", hwsim_mon_setup);
1487         if (hwsim_mon == NULL)
1488                 goto failed;
1489
1490         rtnl_lock();
1491
1492         err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
1493         if (err < 0)
1494                 goto failed_mon;
1495
1496
1497         err = register_netdevice(hwsim_mon);
1498         if (err < 0)
1499                 goto failed_mon;
1500
1501         rtnl_unlock();
1502
1503         return 0;
1504
1505 failed_mon:
1506         rtnl_unlock();
1507         free_netdev(hwsim_mon);
1508         mac80211_hwsim_free();
1509         return err;
1510
1511 failed_hw:
1512         device_unregister(data->dev);
1513 failed_drvdata:
1514         ieee80211_free_hw(hw);
1515 failed:
1516         mac80211_hwsim_free();
1517         return err;
1518 }
1519
1520
1521 static void __exit exit_mac80211_hwsim(void)
1522 {
1523         printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
1524
1525         mac80211_hwsim_free();
1526         unregister_netdev(hwsim_mon);
1527 }
1528
1529
1530 module_init(init_mac80211_hwsim);
1531 module_exit(exit_mac80211_hwsim);