iwl3945: improve 3945 leds
[linux-2.6] / 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/mac80211.h>
19 #include <net/ieee80211_radiotap.h>
20 #include <linux/if_arp.h>
21 #include <linux/rtnetlink.h>
22 #include <linux/etherdevice.h>
23 #include <linux/debugfs.h>
24
25 MODULE_AUTHOR("Jouni Malinen");
26 MODULE_DESCRIPTION("Software simulator of 802.11 radio(s) for mac80211");
27 MODULE_LICENSE("GPL");
28
29 static int radios = 2;
30 module_param(radios, int, 0444);
31 MODULE_PARM_DESC(radios, "Number of simulated radios");
32
33 /**
34  * enum hwsim_regtest - the type of regulatory tests we offer
35  *
36  * These are the different values you can use for the regtest
37  * module parameter. This is useful to help test world roaming
38  * and the driver regulatory_hint() call and combinations of these.
39  * If you want to do specific alpha2 regulatory domain tests simply
40  * use the userspace regulatory request as that will be respected as
41  * well without the need of this module parameter. This is designed
42  * only for testing the driver regulatory request, world roaming
43  * and all possible combinations.
44  *
45  * @HWSIM_REGTEST_DISABLED: No regulatory tests are performed,
46  *      this is the default value.
47  * @HWSIM_REGTEST_DRIVER_REG_FOLLOW: Used for testing the driver regulatory
48  *      hint, only one driver regulatory hint will be sent as such the
49  *      secondary radios are expected to follow.
50  * @HWSIM_REGTEST_DRIVER_REG_ALL: Used for testing the driver regulatory
51  *      request with all radios reporting the same regulatory domain.
52  * @HWSIM_REGTEST_DIFF_COUNTRY: Used for testing the drivers calling
53  *      different regulatory domains requests. Expected behaviour is for
54  *      an intersection to occur but each device will still use their
55  *      respective regulatory requested domains. Subsequent radios will
56  *      use the resulting intersection.
57  * @HWSIM_REGTEST_WORLD_ROAM: Used for testing the world roaming. We acomplish
58  *      this by using a custom beacon-capable regulatory domain for the first
59  *      radio. All other device world roam.
60  * @HWSIM_REGTEST_CUSTOM_WORLD: Used for testing the custom world regulatory
61  *      domain requests. All radios will adhere to this custom world regulatory
62  *      domain.
63  * @HWSIM_REGTEST_CUSTOM_WORLD_2: Used for testing 2 custom world regulatory
64  *      domain requests. The first radio will adhere to the first custom world
65  *      regulatory domain, the second one to the second custom world regulatory
66  *      domain. All other devices will world roam.
67  * @HWSIM_REGTEST_STRICT_FOLLOW_: Used for testing strict regulatory domain
68  *      settings, only the first radio will send a regulatory domain request
69  *      and use strict settings. The rest of the radios are expected to follow.
70  * @HWSIM_REGTEST_STRICT_ALL: Used for testing strict regulatory domain
71  *      settings. All radios will adhere to this.
72  * @HWSIM_REGTEST_STRICT_AND_DRIVER_REG: Used for testing strict regulatory
73  *      domain settings, combined with secondary driver regulatory domain
74  *      settings. The first radio will get a strict regulatory domain setting
75  *      using the first driver regulatory request and the second radio will use
76  *      non-strict settings using the second driver regulatory request. All
77  *      other devices should follow the intersection created between the
78  *      first two.
79  * @HWSIM_REGTEST_ALL: Used for testing every possible mix. You will need
80  *      at least 6 radios for a complete test. We will test in this order:
81  *      1 - driver custom world regulatory domain
82  *      2 - second custom world regulatory domain
83  *      3 - first driver regulatory domain request
84  *      4 - second driver regulatory domain request
85  *      5 - strict regulatory domain settings using the third driver regulatory
86  *          domain request
87  *      6 and on - should follow the intersection of the 3rd, 4rth and 5th radio
88  *                 regulatory requests.
89  */
90 enum hwsim_regtest {
91         HWSIM_REGTEST_DISABLED = 0,
92         HWSIM_REGTEST_DRIVER_REG_FOLLOW = 1,
93         HWSIM_REGTEST_DRIVER_REG_ALL = 2,
94         HWSIM_REGTEST_DIFF_COUNTRY = 3,
95         HWSIM_REGTEST_WORLD_ROAM = 4,
96         HWSIM_REGTEST_CUSTOM_WORLD = 5,
97         HWSIM_REGTEST_CUSTOM_WORLD_2 = 6,
98         HWSIM_REGTEST_STRICT_FOLLOW = 7,
99         HWSIM_REGTEST_STRICT_ALL = 8,
100         HWSIM_REGTEST_STRICT_AND_DRIVER_REG = 9,
101         HWSIM_REGTEST_ALL = 10,
102 };
103
104 /* Set to one of the HWSIM_REGTEST_* values above */
105 static int regtest = HWSIM_REGTEST_DISABLED;
106 module_param(regtest, int, 0444);
107 MODULE_PARM_DESC(regtest, "The type of regulatory test we want to run");
108
109 static const char *hwsim_alpha2s[] = {
110         "FI",
111         "AL",
112         "US",
113         "DE",
114         "JP",
115         "AL",
116 };
117
118 static const struct ieee80211_regdomain hwsim_world_regdom_custom_01 = {
119         .n_reg_rules = 4,
120         .alpha2 =  "99",
121         .reg_rules = {
122                 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
123                 REG_RULE(2484-10, 2484+10, 40, 0, 20, 0),
124                 REG_RULE(5150-10, 5240+10, 40, 0, 30, 0),
125                 REG_RULE(5745-10, 5825+10, 40, 0, 30, 0),
126         }
127 };
128
129 static const struct ieee80211_regdomain hwsim_world_regdom_custom_02 = {
130         .n_reg_rules = 2,
131         .alpha2 =  "99",
132         .reg_rules = {
133                 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
134                 REG_RULE(5725-10, 5850+10, 40, 0, 30,
135                         NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS),
136         }
137 };
138
139 struct hwsim_vif_priv {
140         u32 magic;
141         u8 bssid[ETH_ALEN];
142         bool assoc;
143         u16 aid;
144 };
145
146 #define HWSIM_VIF_MAGIC 0x69537748
147
148 static inline void hwsim_check_magic(struct ieee80211_vif *vif)
149 {
150         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
151         WARN_ON(vp->magic != HWSIM_VIF_MAGIC);
152 }
153
154 static inline void hwsim_set_magic(struct ieee80211_vif *vif)
155 {
156         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
157         vp->magic = HWSIM_VIF_MAGIC;
158 }
159
160 static inline void hwsim_clear_magic(struct ieee80211_vif *vif)
161 {
162         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
163         vp->magic = 0;
164 }
165
166 struct hwsim_sta_priv {
167         u32 magic;
168 };
169
170 #define HWSIM_STA_MAGIC 0x6d537748
171
172 static inline void hwsim_check_sta_magic(struct ieee80211_sta *sta)
173 {
174         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
175         WARN_ON(sp->magic != HWSIM_STA_MAGIC);
176 }
177
178 static inline void hwsim_set_sta_magic(struct ieee80211_sta *sta)
179 {
180         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
181         sp->magic = HWSIM_STA_MAGIC;
182 }
183
184 static inline void hwsim_clear_sta_magic(struct ieee80211_sta *sta)
185 {
186         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
187         sp->magic = 0;
188 }
189
190 static struct class *hwsim_class;
191
192 static struct net_device *hwsim_mon; /* global monitor netdev */
193
194 #define CHAN2G(_freq)  { \
195         .band = IEEE80211_BAND_2GHZ, \
196         .center_freq = (_freq), \
197         .hw_value = (_freq), \
198         .max_power = 20, \
199 }
200
201 #define CHAN5G(_freq) { \
202         .band = IEEE80211_BAND_5GHZ, \
203         .center_freq = (_freq), \
204         .hw_value = (_freq), \
205         .max_power = 20, \
206 }
207
208 static const struct ieee80211_channel hwsim_channels_2ghz[] = {
209         CHAN2G(2412), /* Channel 1 */
210         CHAN2G(2417), /* Channel 2 */
211         CHAN2G(2422), /* Channel 3 */
212         CHAN2G(2427), /* Channel 4 */
213         CHAN2G(2432), /* Channel 5 */
214         CHAN2G(2437), /* Channel 6 */
215         CHAN2G(2442), /* Channel 7 */
216         CHAN2G(2447), /* Channel 8 */
217         CHAN2G(2452), /* Channel 9 */
218         CHAN2G(2457), /* Channel 10 */
219         CHAN2G(2462), /* Channel 11 */
220         CHAN2G(2467), /* Channel 12 */
221         CHAN2G(2472), /* Channel 13 */
222         CHAN2G(2484), /* Channel 14 */
223 };
224
225 static const struct ieee80211_channel hwsim_channels_5ghz[] = {
226         CHAN5G(5180), /* Channel 36 */
227         CHAN5G(5200), /* Channel 40 */
228         CHAN5G(5220), /* Channel 44 */
229         CHAN5G(5240), /* Channel 48 */
230
231         CHAN5G(5260), /* Channel 52 */
232         CHAN5G(5280), /* Channel 56 */
233         CHAN5G(5300), /* Channel 60 */
234         CHAN5G(5320), /* Channel 64 */
235
236         CHAN5G(5500), /* Channel 100 */
237         CHAN5G(5520), /* Channel 104 */
238         CHAN5G(5540), /* Channel 108 */
239         CHAN5G(5560), /* Channel 112 */
240         CHAN5G(5580), /* Channel 116 */
241         CHAN5G(5600), /* Channel 120 */
242         CHAN5G(5620), /* Channel 124 */
243         CHAN5G(5640), /* Channel 128 */
244         CHAN5G(5660), /* Channel 132 */
245         CHAN5G(5680), /* Channel 136 */
246         CHAN5G(5700), /* Channel 140 */
247
248         CHAN5G(5745), /* Channel 149 */
249         CHAN5G(5765), /* Channel 153 */
250         CHAN5G(5785), /* Channel 157 */
251         CHAN5G(5805), /* Channel 161 */
252         CHAN5G(5825), /* Channel 165 */
253 };
254
255 static const struct ieee80211_rate hwsim_rates[] = {
256         { .bitrate = 10 },
257         { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
258         { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
259         { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
260         { .bitrate = 60 },
261         { .bitrate = 90 },
262         { .bitrate = 120 },
263         { .bitrate = 180 },
264         { .bitrate = 240 },
265         { .bitrate = 360 },
266         { .bitrate = 480 },
267         { .bitrate = 540 }
268 };
269
270 static spinlock_t hwsim_radio_lock;
271 static struct list_head hwsim_radios;
272
273 struct mac80211_hwsim_data {
274         struct list_head list;
275         struct ieee80211_hw *hw;
276         struct device *dev;
277         struct ieee80211_supported_band bands[2];
278         struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)];
279         struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)];
280         struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
281
282         struct ieee80211_channel *channel;
283         int radio_enabled;
284         unsigned long beacon_int; /* in jiffies unit */
285         unsigned int rx_filter;
286         int started;
287         struct timer_list beacon_timer;
288         enum ps_mode {
289                 PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
290         } ps;
291         bool ps_poll_pending;
292         struct dentry *debugfs;
293         struct dentry *debugfs_ps;
294
295         /*
296          * Only radios in the same group can communicate together (the
297          * channel has to match too). Each bit represents a group. A
298          * radio can be in more then one group.
299          */
300         u64 group;
301         struct dentry *debugfs_group;
302 };
303
304
305 struct hwsim_radiotap_hdr {
306         struct ieee80211_radiotap_header hdr;
307         u8 rt_flags;
308         u8 rt_rate;
309         __le16 rt_channel;
310         __le16 rt_chbitmask;
311 } __attribute__ ((packed));
312
313
314 static int hwsim_mon_xmit(struct sk_buff *skb, struct net_device *dev)
315 {
316         /* TODO: allow packet injection */
317         dev_kfree_skb(skb);
318         return 0;
319 }
320
321
322 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
323                                       struct sk_buff *tx_skb)
324 {
325         struct mac80211_hwsim_data *data = hw->priv;
326         struct sk_buff *skb;
327         struct hwsim_radiotap_hdr *hdr;
328         u16 flags;
329         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
330         struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
331
332         if (!netif_running(hwsim_mon))
333                 return;
334
335         skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
336         if (skb == NULL)
337                 return;
338
339         hdr = (struct hwsim_radiotap_hdr *) skb_push(skb, sizeof(*hdr));
340         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
341         hdr->hdr.it_pad = 0;
342         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
343         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
344                                           (1 << IEEE80211_RADIOTAP_RATE) |
345                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
346         hdr->rt_flags = 0;
347         hdr->rt_rate = txrate->bitrate / 5;
348         hdr->rt_channel = cpu_to_le16(data->channel->center_freq);
349         flags = IEEE80211_CHAN_2GHZ;
350         if (txrate->flags & IEEE80211_RATE_ERP_G)
351                 flags |= IEEE80211_CHAN_OFDM;
352         else
353                 flags |= IEEE80211_CHAN_CCK;
354         hdr->rt_chbitmask = cpu_to_le16(flags);
355
356         skb->dev = hwsim_mon;
357         skb_set_mac_header(skb, 0);
358         skb->ip_summed = CHECKSUM_UNNECESSARY;
359         skb->pkt_type = PACKET_OTHERHOST;
360         skb->protocol = htons(ETH_P_802_2);
361         memset(skb->cb, 0, sizeof(skb->cb));
362         netif_rx(skb);
363 }
364
365
366 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
367                            struct sk_buff *skb)
368 {
369         switch (data->ps) {
370         case PS_DISABLED:
371                 return true;
372         case PS_ENABLED:
373                 return false;
374         case PS_AUTO_POLL:
375                 /* TODO: accept (some) Beacons by default and other frames only
376                  * if pending PS-Poll has been sent */
377                 return true;
378         case PS_MANUAL_POLL:
379                 /* Allow unicast frames to own address if there is a pending
380                  * PS-Poll */
381                 if (data->ps_poll_pending &&
382                     memcmp(data->hw->wiphy->perm_addr, skb->data + 4,
383                            ETH_ALEN) == 0) {
384                         data->ps_poll_pending = false;
385                         return true;
386                 }
387                 return false;
388         }
389
390         return true;
391 }
392
393
394 static bool mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
395                                     struct sk_buff *skb)
396 {
397         struct mac80211_hwsim_data *data = hw->priv, *data2;
398         bool ack = false;
399         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
400         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
401         struct ieee80211_rx_status rx_status;
402
403         memset(&rx_status, 0, sizeof(rx_status));
404         /* TODO: set mactime */
405         rx_status.freq = data->channel->center_freq;
406         rx_status.band = data->channel->band;
407         rx_status.rate_idx = info->control.rates[0].idx;
408         /* TODO: simulate signal strength (and optional packet drop) */
409
410         if (data->ps != PS_DISABLED)
411                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
412
413         /* Copy skb to all enabled radios that are on the current frequency */
414         spin_lock(&hwsim_radio_lock);
415         list_for_each_entry(data2, &hwsim_radios, list) {
416                 struct sk_buff *nskb;
417
418                 if (data == data2)
419                         continue;
420
421                 if (!data2->started || !data2->radio_enabled ||
422                     !hwsim_ps_rx_ok(data2, skb) ||
423                     data->channel->center_freq != data2->channel->center_freq ||
424                     !(data->group & data2->group))
425                         continue;
426
427                 nskb = skb_copy(skb, GFP_ATOMIC);
428                 if (nskb == NULL)
429                         continue;
430
431                 if (memcmp(hdr->addr1, data2->hw->wiphy->perm_addr,
432                            ETH_ALEN) == 0)
433                         ack = true;
434                 ieee80211_rx_irqsafe(data2->hw, nskb, &rx_status);
435         }
436         spin_unlock(&hwsim_radio_lock);
437
438         return ack;
439 }
440
441
442 static int mac80211_hwsim_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
443 {
444         struct mac80211_hwsim_data *data = hw->priv;
445         bool ack;
446         struct ieee80211_tx_info *txi;
447
448         mac80211_hwsim_monitor_rx(hw, skb);
449
450         if (skb->len < 10) {
451                 /* Should not happen; just a sanity check for addr1 use */
452                 dev_kfree_skb(skb);
453                 return NETDEV_TX_OK;
454         }
455
456         if (!data->radio_enabled) {
457                 printk(KERN_DEBUG "%s: dropped TX frame since radio "
458                        "disabled\n", wiphy_name(hw->wiphy));
459                 dev_kfree_skb(skb);
460                 return NETDEV_TX_OK;
461         }
462
463         ack = mac80211_hwsim_tx_frame(hw, skb);
464
465         txi = IEEE80211_SKB_CB(skb);
466
467         if (txi->control.vif)
468                 hwsim_check_magic(txi->control.vif);
469         if (txi->control.sta)
470                 hwsim_check_sta_magic(txi->control.sta);
471
472         ieee80211_tx_info_clear_status(txi);
473         if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
474                 txi->flags |= IEEE80211_TX_STAT_ACK;
475         ieee80211_tx_status_irqsafe(hw, skb);
476         return NETDEV_TX_OK;
477 }
478
479
480 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
481 {
482         struct mac80211_hwsim_data *data = hw->priv;
483         printk(KERN_DEBUG "%s:%s\n", wiphy_name(hw->wiphy), __func__);
484         data->started = 1;
485         return 0;
486 }
487
488
489 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
490 {
491         struct mac80211_hwsim_data *data = hw->priv;
492         data->started = 0;
493         del_timer(&data->beacon_timer);
494         printk(KERN_DEBUG "%s:%s\n", wiphy_name(hw->wiphy), __func__);
495 }
496
497
498 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
499                                         struct ieee80211_if_init_conf *conf)
500 {
501         printk(KERN_DEBUG "%s:%s (type=%d mac_addr=%pM)\n",
502                wiphy_name(hw->wiphy), __func__, conf->type,
503                conf->mac_addr);
504         hwsim_set_magic(conf->vif);
505         return 0;
506 }
507
508
509 static void mac80211_hwsim_remove_interface(
510         struct ieee80211_hw *hw, struct ieee80211_if_init_conf *conf)
511 {
512         printk(KERN_DEBUG "%s:%s (type=%d mac_addr=%pM)\n",
513                wiphy_name(hw->wiphy), __func__, conf->type,
514                conf->mac_addr);
515         hwsim_check_magic(conf->vif);
516         hwsim_clear_magic(conf->vif);
517 }
518
519
520 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
521                                      struct ieee80211_vif *vif)
522 {
523         struct ieee80211_hw *hw = arg;
524         struct sk_buff *skb;
525         struct ieee80211_tx_info *info;
526
527         hwsim_check_magic(vif);
528
529         if (vif->type != NL80211_IFTYPE_AP &&
530             vif->type != NL80211_IFTYPE_MESH_POINT)
531                 return;
532
533         skb = ieee80211_beacon_get(hw, vif);
534         if (skb == NULL)
535                 return;
536         info = IEEE80211_SKB_CB(skb);
537
538         mac80211_hwsim_monitor_rx(hw, skb);
539         mac80211_hwsim_tx_frame(hw, skb);
540         dev_kfree_skb(skb);
541 }
542
543
544 static void mac80211_hwsim_beacon(unsigned long arg)
545 {
546         struct ieee80211_hw *hw = (struct ieee80211_hw *) arg;
547         struct mac80211_hwsim_data *data = hw->priv;
548
549         if (!data->started || !data->radio_enabled)
550                 return;
551
552         ieee80211_iterate_active_interfaces_atomic(
553                 hw, mac80211_hwsim_beacon_tx, hw);
554
555         data->beacon_timer.expires = jiffies + data->beacon_int;
556         add_timer(&data->beacon_timer);
557 }
558
559
560 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
561 {
562         struct mac80211_hwsim_data *data = hw->priv;
563         struct ieee80211_conf *conf = &hw->conf;
564
565         printk(KERN_DEBUG "%s:%s (freq=%d radio_enabled=%d idle=%d ps=%d)\n",
566                wiphy_name(hw->wiphy), __func__,
567                conf->channel->center_freq, conf->radio_enabled,
568                !!(conf->flags & IEEE80211_CONF_IDLE),
569                !!(conf->flags & IEEE80211_CONF_PS));
570
571         data->channel = conf->channel;
572         data->radio_enabled = conf->radio_enabled;
573         if (!data->started || !data->radio_enabled || !data->beacon_int)
574                 del_timer(&data->beacon_timer);
575         else
576                 mod_timer(&data->beacon_timer, jiffies + data->beacon_int);
577
578         return 0;
579 }
580
581
582 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
583                                             unsigned int changed_flags,
584                                             unsigned int *total_flags,
585                                             int mc_count,
586                                             struct dev_addr_list *mc_list)
587 {
588         struct mac80211_hwsim_data *data = hw->priv;
589
590         printk(KERN_DEBUG "%s:%s\n", wiphy_name(hw->wiphy), __func__);
591
592         data->rx_filter = 0;
593         if (*total_flags & FIF_PROMISC_IN_BSS)
594                 data->rx_filter |= FIF_PROMISC_IN_BSS;
595         if (*total_flags & FIF_ALLMULTI)
596                 data->rx_filter |= FIF_ALLMULTI;
597
598         *total_flags = data->rx_filter;
599 }
600
601 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
602                                             struct ieee80211_vif *vif,
603                                             struct ieee80211_bss_conf *info,
604                                             u32 changed)
605 {
606         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
607         struct mac80211_hwsim_data *data = hw->priv;
608
609         hwsim_check_magic(vif);
610
611         printk(KERN_DEBUG "%s:%s(changed=0x%x)\n",
612                wiphy_name(hw->wiphy), __func__, changed);
613
614         if (changed & BSS_CHANGED_BSSID) {
615                 printk(KERN_DEBUG "%s:%s: BSSID changed: %pM\n",
616                        wiphy_name(hw->wiphy), __func__,
617                        info->bssid);
618                 memcpy(vp->bssid, info->bssid, ETH_ALEN);
619         }
620
621         if (changed & BSS_CHANGED_ASSOC) {
622                 printk(KERN_DEBUG "  %s: ASSOC: assoc=%d aid=%d\n",
623                        wiphy_name(hw->wiphy), info->assoc, info->aid);
624                 vp->assoc = info->assoc;
625                 vp->aid = info->aid;
626         }
627
628         if (changed & BSS_CHANGED_BEACON_INT) {
629                 printk(KERN_DEBUG "  %s: BCNINT: %d\n",
630                        wiphy_name(hw->wiphy), info->beacon_int);
631                 data->beacon_int = 1024 * info->beacon_int / 1000 * HZ / 1000;
632                 if (WARN_ON(!data->beacon_int))
633                         data->beacon_int = 1;
634         }
635
636         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
637                 printk(KERN_DEBUG "  %s: ERP_CTS_PROT: %d\n",
638                        wiphy_name(hw->wiphy), info->use_cts_prot);
639         }
640
641         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
642                 printk(KERN_DEBUG "  %s: ERP_PREAMBLE: %d\n",
643                        wiphy_name(hw->wiphy), info->use_short_preamble);
644         }
645
646         if (changed & BSS_CHANGED_ERP_SLOT) {
647                 printk(KERN_DEBUG "  %s: ERP_SLOT: %d\n",
648                        wiphy_name(hw->wiphy), info->use_short_slot);
649         }
650
651         if (changed & BSS_CHANGED_HT) {
652                 printk(KERN_DEBUG "  %s: HT: op_mode=0x%x\n",
653                        wiphy_name(hw->wiphy),
654                        info->ht_operation_mode);
655         }
656
657         if (changed & BSS_CHANGED_BASIC_RATES) {
658                 printk(KERN_DEBUG "  %s: BASIC_RATES: 0x%llx\n",
659                        wiphy_name(hw->wiphy),
660                        (unsigned long long) info->basic_rates);
661         }
662 }
663
664 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
665                                       struct ieee80211_vif *vif,
666                                       enum sta_notify_cmd cmd,
667                                       struct ieee80211_sta *sta)
668 {
669         hwsim_check_magic(vif);
670         switch (cmd) {
671         case STA_NOTIFY_ADD:
672                 hwsim_set_sta_magic(sta);
673                 break;
674         case STA_NOTIFY_REMOVE:
675                 hwsim_clear_sta_magic(sta);
676                 break;
677         case STA_NOTIFY_SLEEP:
678         case STA_NOTIFY_AWAKE:
679                 /* TODO: make good use of these flags */
680                 break;
681         }
682 }
683
684 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
685                                   struct ieee80211_sta *sta,
686                                   bool set)
687 {
688         hwsim_check_sta_magic(sta);
689         return 0;
690 }
691
692 static int mac80211_hwsim_conf_tx(
693         struct ieee80211_hw *hw, u16 queue,
694         const struct ieee80211_tx_queue_params *params)
695 {
696         printk(KERN_DEBUG "%s:%s (queue=%d txop=%d cw_min=%d cw_max=%d "
697                "aifs=%d)\n",
698                wiphy_name(hw->wiphy), __func__, queue,
699                params->txop, params->cw_min, params->cw_max, params->aifs);
700         return 0;
701 }
702
703 static const struct ieee80211_ops mac80211_hwsim_ops =
704 {
705         .tx = mac80211_hwsim_tx,
706         .start = mac80211_hwsim_start,
707         .stop = mac80211_hwsim_stop,
708         .add_interface = mac80211_hwsim_add_interface,
709         .remove_interface = mac80211_hwsim_remove_interface,
710         .config = mac80211_hwsim_config,
711         .configure_filter = mac80211_hwsim_configure_filter,
712         .bss_info_changed = mac80211_hwsim_bss_info_changed,
713         .sta_notify = mac80211_hwsim_sta_notify,
714         .set_tim = mac80211_hwsim_set_tim,
715         .conf_tx = mac80211_hwsim_conf_tx,
716 };
717
718
719 static void mac80211_hwsim_free(void)
720 {
721         struct list_head tmplist, *i, *tmp;
722         struct mac80211_hwsim_data *data;
723
724         INIT_LIST_HEAD(&tmplist);
725
726         spin_lock_bh(&hwsim_radio_lock);
727         list_for_each_safe(i, tmp, &hwsim_radios)
728                 list_move(i, &tmplist);
729         spin_unlock_bh(&hwsim_radio_lock);
730
731         list_for_each_entry(data, &tmplist, list) {
732                 debugfs_remove(data->debugfs_group);
733                 debugfs_remove(data->debugfs_ps);
734                 debugfs_remove(data->debugfs);
735                 ieee80211_unregister_hw(data->hw);
736                 device_unregister(data->dev);
737                 ieee80211_free_hw(data->hw);
738         }
739         class_destroy(hwsim_class);
740 }
741
742
743 static struct device_driver mac80211_hwsim_driver = {
744         .name = "mac80211_hwsim"
745 };
746
747 static const struct net_device_ops hwsim_netdev_ops = {
748         .ndo_start_xmit         = hwsim_mon_xmit,
749         .ndo_change_mtu         = eth_change_mtu,
750         .ndo_set_mac_address    = eth_mac_addr,
751         .ndo_validate_addr      = eth_validate_addr,
752 };
753
754 static void hwsim_mon_setup(struct net_device *dev)
755 {
756         dev->netdev_ops = &hwsim_netdev_ops;
757         dev->destructor = free_netdev;
758         ether_setup(dev);
759         dev->tx_queue_len = 0;
760         dev->type = ARPHRD_IEEE80211_RADIOTAP;
761         memset(dev->dev_addr, 0, ETH_ALEN);
762         dev->dev_addr[0] = 0x12;
763 }
764
765
766 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
767 {
768         struct mac80211_hwsim_data *data = dat;
769         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
770         DECLARE_MAC_BUF(buf);
771         struct sk_buff *skb;
772         struct ieee80211_pspoll *pspoll;
773
774         if (!vp->assoc)
775                 return;
776
777         printk(KERN_DEBUG "%s:%s: send PS-Poll to %pM for aid %d\n",
778                wiphy_name(data->hw->wiphy), __func__, vp->bssid, vp->aid);
779
780         skb = dev_alloc_skb(sizeof(*pspoll));
781         if (!skb)
782                 return;
783         pspoll = (void *) skb_put(skb, sizeof(*pspoll));
784         pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
785                                             IEEE80211_STYPE_PSPOLL |
786                                             IEEE80211_FCTL_PM);
787         pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
788         memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
789         memcpy(pspoll->ta, mac, ETH_ALEN);
790         if (data->radio_enabled &&
791             !mac80211_hwsim_tx_frame(data->hw, skb))
792                 printk(KERN_DEBUG "%s: PS-Poll frame not ack'ed\n", __func__);
793         dev_kfree_skb(skb);
794 }
795
796
797 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
798                                 struct ieee80211_vif *vif, int ps)
799 {
800         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
801         DECLARE_MAC_BUF(buf);
802         struct sk_buff *skb;
803         struct ieee80211_hdr *hdr;
804
805         if (!vp->assoc)
806                 return;
807
808         printk(KERN_DEBUG "%s:%s: send data::nullfunc to %pM ps=%d\n",
809                wiphy_name(data->hw->wiphy), __func__, vp->bssid, ps);
810
811         skb = dev_alloc_skb(sizeof(*hdr));
812         if (!skb)
813                 return;
814         hdr = (void *) skb_put(skb, sizeof(*hdr) - ETH_ALEN);
815         hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
816                                          IEEE80211_STYPE_NULLFUNC |
817                                          (ps ? IEEE80211_FCTL_PM : 0));
818         hdr->duration_id = cpu_to_le16(0);
819         memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
820         memcpy(hdr->addr2, mac, ETH_ALEN);
821         memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
822         if (data->radio_enabled &&
823             !mac80211_hwsim_tx_frame(data->hw, skb))
824                 printk(KERN_DEBUG "%s: nullfunc frame not ack'ed\n", __func__);
825         dev_kfree_skb(skb);
826 }
827
828
829 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
830                                    struct ieee80211_vif *vif)
831 {
832         struct mac80211_hwsim_data *data = dat;
833         hwsim_send_nullfunc(data, mac, vif, 1);
834 }
835
836
837 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
838                                       struct ieee80211_vif *vif)
839 {
840         struct mac80211_hwsim_data *data = dat;
841         hwsim_send_nullfunc(data, mac, vif, 0);
842 }
843
844
845 static int hwsim_fops_ps_read(void *dat, u64 *val)
846 {
847         struct mac80211_hwsim_data *data = dat;
848         *val = data->ps;
849         return 0;
850 }
851
852 static int hwsim_fops_ps_write(void *dat, u64 val)
853 {
854         struct mac80211_hwsim_data *data = dat;
855         enum ps_mode old_ps;
856
857         if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
858             val != PS_MANUAL_POLL)
859                 return -EINVAL;
860
861         old_ps = data->ps;
862         data->ps = val;
863
864         if (val == PS_MANUAL_POLL) {
865                 ieee80211_iterate_active_interfaces(data->hw,
866                                                     hwsim_send_ps_poll, data);
867                 data->ps_poll_pending = true;
868         } else if (old_ps == PS_DISABLED && val != PS_DISABLED) {
869                 ieee80211_iterate_active_interfaces(data->hw,
870                                                     hwsim_send_nullfunc_ps,
871                                                     data);
872         } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
873                 ieee80211_iterate_active_interfaces(data->hw,
874                                                     hwsim_send_nullfunc_no_ps,
875                                                     data);
876         }
877
878         return 0;
879 }
880
881 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
882                         "%llu\n");
883
884
885 static int hwsim_fops_group_read(void *dat, u64 *val)
886 {
887         struct mac80211_hwsim_data *data = dat;
888         *val = data->group;
889         return 0;
890 }
891
892 static int hwsim_fops_group_write(void *dat, u64 val)
893 {
894         struct mac80211_hwsim_data *data = dat;
895         data->group = val;
896         return 0;
897 }
898
899 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
900                         hwsim_fops_group_read, hwsim_fops_group_write,
901                         "%llx\n");
902
903 static int __init init_mac80211_hwsim(void)
904 {
905         int i, err = 0;
906         u8 addr[ETH_ALEN];
907         struct mac80211_hwsim_data *data;
908         struct ieee80211_hw *hw;
909         enum ieee80211_band band;
910
911         if (radios < 1 || radios > 100)
912                 return -EINVAL;
913
914         spin_lock_init(&hwsim_radio_lock);
915         INIT_LIST_HEAD(&hwsim_radios);
916
917         hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
918         if (IS_ERR(hwsim_class))
919                 return PTR_ERR(hwsim_class);
920
921         memset(addr, 0, ETH_ALEN);
922         addr[0] = 0x02;
923
924         for (i = 0; i < radios; i++) {
925                 printk(KERN_DEBUG "mac80211_hwsim: Initializing radio %d\n",
926                        i);
927                 hw = ieee80211_alloc_hw(sizeof(*data), &mac80211_hwsim_ops);
928                 if (!hw) {
929                         printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw "
930                                "failed\n");
931                         err = -ENOMEM;
932                         goto failed;
933                 }
934                 data = hw->priv;
935                 data->hw = hw;
936
937                 data->dev = device_create(hwsim_class, NULL, 0, hw,
938                                           "hwsim%d", i);
939                 if (IS_ERR(data->dev)) {
940                         printk(KERN_DEBUG
941                                "mac80211_hwsim: device_create "
942                                "failed (%ld)\n", PTR_ERR(data->dev));
943                         err = -ENOMEM;
944                         goto failed_drvdata;
945                 }
946                 data->dev->driver = &mac80211_hwsim_driver;
947
948                 SET_IEEE80211_DEV(hw, data->dev);
949                 addr[3] = i >> 8;
950                 addr[4] = i;
951                 SET_IEEE80211_PERM_ADDR(hw, addr);
952
953                 hw->channel_change_time = 1;
954                 hw->queues = 4;
955                 hw->wiphy->interface_modes =
956                         BIT(NL80211_IFTYPE_STATION) |
957                         BIT(NL80211_IFTYPE_AP) |
958                         BIT(NL80211_IFTYPE_MESH_POINT);
959
960                 hw->flags = IEEE80211_HW_MFP_CAPABLE;
961
962                 /* ask mac80211 to reserve space for magic */
963                 hw->vif_data_size = sizeof(struct hwsim_vif_priv);
964                 hw->sta_data_size = sizeof(struct hwsim_sta_priv);
965
966                 memcpy(data->channels_2ghz, hwsim_channels_2ghz,
967                         sizeof(hwsim_channels_2ghz));
968                 memcpy(data->channels_5ghz, hwsim_channels_5ghz,
969                         sizeof(hwsim_channels_5ghz));
970                 memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
971
972                 for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) {
973                         struct ieee80211_supported_band *sband = &data->bands[band];
974                         switch (band) {
975                         case IEEE80211_BAND_2GHZ:
976                                 sband->channels = data->channels_2ghz;
977                                 sband->n_channels =
978                                         ARRAY_SIZE(hwsim_channels_2ghz);
979                                 break;
980                         case IEEE80211_BAND_5GHZ:
981                                 sband->channels = data->channels_5ghz;
982                                 sband->n_channels =
983                                         ARRAY_SIZE(hwsim_channels_5ghz);
984                                 break;
985                         default:
986                                 break;
987                         }
988
989                         sband->bitrates = data->rates;
990                         sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
991
992                         sband->ht_cap.ht_supported = true;
993                         sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
994                                 IEEE80211_HT_CAP_GRN_FLD |
995                                 IEEE80211_HT_CAP_SGI_40 |
996                                 IEEE80211_HT_CAP_DSSSCCK40;
997                         sband->ht_cap.ampdu_factor = 0x3;
998                         sband->ht_cap.ampdu_density = 0x6;
999                         memset(&sband->ht_cap.mcs, 0,
1000                                sizeof(sband->ht_cap.mcs));
1001                         sband->ht_cap.mcs.rx_mask[0] = 0xff;
1002                         sband->ht_cap.mcs.rx_mask[1] = 0xff;
1003                         sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
1004
1005                         hw->wiphy->bands[band] = sband;
1006                 }
1007                 /* By default all radios are belonging to the first group */
1008                 data->group = 1;
1009
1010                 /* Work to be done prior to ieee80211_register_hw() */
1011                 switch (regtest) {
1012                 case HWSIM_REGTEST_DISABLED:
1013                 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
1014                 case HWSIM_REGTEST_DRIVER_REG_ALL:
1015                 case HWSIM_REGTEST_DIFF_COUNTRY:
1016                         /*
1017                          * Nothing to be done for driver regulatory domain
1018                          * hints prior to ieee80211_register_hw()
1019                          */
1020                         break;
1021                 case HWSIM_REGTEST_WORLD_ROAM:
1022                         if (i == 0) {
1023                                 hw->wiphy->custom_regulatory = true;
1024                                 wiphy_apply_custom_regulatory(hw->wiphy,
1025                                         &hwsim_world_regdom_custom_01);
1026                         }
1027                         break;
1028                 case HWSIM_REGTEST_CUSTOM_WORLD:
1029                         hw->wiphy->custom_regulatory = true;
1030                         wiphy_apply_custom_regulatory(hw->wiphy,
1031                                 &hwsim_world_regdom_custom_01);
1032                         break;
1033                 case HWSIM_REGTEST_CUSTOM_WORLD_2:
1034                         if (i == 0) {
1035                                 hw->wiphy->custom_regulatory = true;
1036                                 wiphy_apply_custom_regulatory(hw->wiphy,
1037                                         &hwsim_world_regdom_custom_01);
1038                         } else if (i == 1) {
1039                                 hw->wiphy->custom_regulatory = true;
1040                                 wiphy_apply_custom_regulatory(hw->wiphy,
1041                                         &hwsim_world_regdom_custom_02);
1042                         }
1043                         break;
1044                 case HWSIM_REGTEST_STRICT_ALL:
1045                         hw->wiphy->strict_regulatory = true;
1046                         break;
1047                 case HWSIM_REGTEST_STRICT_FOLLOW:
1048                 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
1049                         if (i == 0)
1050                                 hw->wiphy->strict_regulatory = true;
1051                         break;
1052                 case HWSIM_REGTEST_ALL:
1053                         if (i == 0) {
1054                                 hw->wiphy->custom_regulatory = true;
1055                                 wiphy_apply_custom_regulatory(hw->wiphy,
1056                                         &hwsim_world_regdom_custom_01);
1057                         } else if (i == 1) {
1058                                 hw->wiphy->custom_regulatory = true;
1059                                 wiphy_apply_custom_regulatory(hw->wiphy,
1060                                         &hwsim_world_regdom_custom_02);
1061                         } else if (i == 4)
1062                                 hw->wiphy->strict_regulatory = true;
1063                         break;
1064                 default:
1065                         break;
1066                 }
1067
1068                 /* give the regulatory workqueue a chance to run */
1069                 if (regtest)
1070                         schedule_timeout_interruptible(1);
1071                 err = ieee80211_register_hw(hw);
1072                 if (err < 0) {
1073                         printk(KERN_DEBUG "mac80211_hwsim: "
1074                                "ieee80211_register_hw failed (%d)\n", err);
1075                         goto failed_hw;
1076                 }
1077
1078                 /* Work to be done after to ieee80211_register_hw() */
1079                 switch (regtest) {
1080                 case HWSIM_REGTEST_WORLD_ROAM:
1081                 case HWSIM_REGTEST_DISABLED:
1082                         break;
1083                 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
1084                         if (!i)
1085                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1086                         break;
1087                 case HWSIM_REGTEST_DRIVER_REG_ALL:
1088                 case HWSIM_REGTEST_STRICT_ALL:
1089                         regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1090                         break;
1091                 case HWSIM_REGTEST_DIFF_COUNTRY:
1092                         if (i < ARRAY_SIZE(hwsim_alpha2s))
1093                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[i]);
1094                         break;
1095                 case HWSIM_REGTEST_CUSTOM_WORLD:
1096                 case HWSIM_REGTEST_CUSTOM_WORLD_2:
1097                         /*
1098                          * Nothing to be done for custom world regulatory
1099                          * domains after to ieee80211_register_hw
1100                          */
1101                         break;
1102                 case HWSIM_REGTEST_STRICT_FOLLOW:
1103                         if (i == 0)
1104                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1105                         break;
1106                 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
1107                         if (i == 0)
1108                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1109                         else if (i == 1)
1110                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
1111                         break;
1112                 case HWSIM_REGTEST_ALL:
1113                         if (i == 2)
1114                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1115                         else if (i == 3)
1116                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
1117                         else if (i == 4)
1118                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[2]);
1119                         break;
1120                 default:
1121                         break;
1122                 }
1123
1124                 printk(KERN_DEBUG "%s: hwaddr %pM registered\n",
1125                        wiphy_name(hw->wiphy),
1126                        hw->wiphy->perm_addr);
1127
1128                 data->debugfs = debugfs_create_dir("hwsim",
1129                                                    hw->wiphy->debugfsdir);
1130                 data->debugfs_ps = debugfs_create_file("ps", 0666,
1131                                                        data->debugfs, data,
1132                                                        &hwsim_fops_ps);
1133                 data->debugfs_group = debugfs_create_file("group", 0666,
1134                                                         data->debugfs, data,
1135                                                         &hwsim_fops_group);
1136
1137                 setup_timer(&data->beacon_timer, mac80211_hwsim_beacon,
1138                             (unsigned long) hw);
1139
1140                 list_add_tail(&data->list, &hwsim_radios);
1141         }
1142
1143         hwsim_mon = alloc_netdev(0, "hwsim%d", hwsim_mon_setup);
1144         if (hwsim_mon == NULL)
1145                 goto failed;
1146
1147         rtnl_lock();
1148
1149         err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
1150         if (err < 0)
1151                 goto failed_mon;
1152
1153
1154         err = register_netdevice(hwsim_mon);
1155         if (err < 0)
1156                 goto failed_mon;
1157
1158         rtnl_unlock();
1159
1160         return 0;
1161
1162 failed_mon:
1163         rtnl_unlock();
1164         free_netdev(hwsim_mon);
1165         mac80211_hwsim_free();
1166         return err;
1167
1168 failed_hw:
1169         device_unregister(data->dev);
1170 failed_drvdata:
1171         ieee80211_free_hw(hw);
1172 failed:
1173         mac80211_hwsim_free();
1174         return err;
1175 }
1176
1177
1178 static void __exit exit_mac80211_hwsim(void)
1179 {
1180         printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
1181
1182         unregister_netdev(hwsim_mon);
1183         mac80211_hwsim_free();
1184 }
1185
1186
1187 module_init(init_mac80211_hwsim);
1188 module_exit(exit_mac80211_hwsim);