Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux
[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  * Copyright (c) 2011, Javier Lopez <jlopex@gmail.com>
5  *
6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License version 2 as
8  * published by the Free Software Foundation.
9  */
10
11 /*
12  * TODO:
13  * - Add TSF sync and fix IBSS beacon transmission by adding
14  *   competition for "air time" at TBTT
15  * - RX filtering based on filter configuration (data->rx_filter)
16  */
17
18 #include <linux/list.h>
19 #include <linux/slab.h>
20 #include <linux/spinlock.h>
21 #include <net/dst.h>
22 #include <net/xfrm.h>
23 #include <net/mac80211.h>
24 #include <net/ieee80211_radiotap.h>
25 #include <linux/if_arp.h>
26 #include <linux/rtnetlink.h>
27 #include <linux/etherdevice.h>
28 #include <linux/debugfs.h>
29 #include <linux/module.h>
30 #include <net/genetlink.h>
31 #include "mac80211_hwsim.h"
32
33 #define WARN_QUEUE 100
34 #define MAX_QUEUE 200
35
36 MODULE_AUTHOR("Jouni Malinen");
37 MODULE_DESCRIPTION("Software simulator of 802.11 radio(s) for mac80211");
38 MODULE_LICENSE("GPL");
39
40 int wmediumd_pid;
41 static int radios = 2;
42 module_param(radios, int, 0444);
43 MODULE_PARM_DESC(radios, "Number of simulated radios");
44
45 static bool fake_hw_scan;
46 module_param(fake_hw_scan, bool, 0444);
47 MODULE_PARM_DESC(fake_hw_scan, "Install fake (no-op) hw-scan handler");
48
49 /**
50  * enum hwsim_regtest - the type of regulatory tests we offer
51  *
52  * These are the different values you can use for the regtest
53  * module parameter. This is useful to help test world roaming
54  * and the driver regulatory_hint() call and combinations of these.
55  * If you want to do specific alpha2 regulatory domain tests simply
56  * use the userspace regulatory request as that will be respected as
57  * well without the need of this module parameter. This is designed
58  * only for testing the driver regulatory request, world roaming
59  * and all possible combinations.
60  *
61  * @HWSIM_REGTEST_DISABLED: No regulatory tests are performed,
62  *      this is the default value.
63  * @HWSIM_REGTEST_DRIVER_REG_FOLLOW: Used for testing the driver regulatory
64  *      hint, only one driver regulatory hint will be sent as such the
65  *      secondary radios are expected to follow.
66  * @HWSIM_REGTEST_DRIVER_REG_ALL: Used for testing the driver regulatory
67  *      request with all radios reporting the same regulatory domain.
68  * @HWSIM_REGTEST_DIFF_COUNTRY: Used for testing the drivers calling
69  *      different regulatory domains requests. Expected behaviour is for
70  *      an intersection to occur but each device will still use their
71  *      respective regulatory requested domains. Subsequent radios will
72  *      use the resulting intersection.
73  * @HWSIM_REGTEST_WORLD_ROAM: Used for testing the world roaming. We accomplish
74  *      this by using a custom beacon-capable regulatory domain for the first
75  *      radio. All other device world roam.
76  * @HWSIM_REGTEST_CUSTOM_WORLD: Used for testing the custom world regulatory
77  *      domain requests. All radios will adhere to this custom world regulatory
78  *      domain.
79  * @HWSIM_REGTEST_CUSTOM_WORLD_2: Used for testing 2 custom world regulatory
80  *      domain requests. The first radio will adhere to the first custom world
81  *      regulatory domain, the second one to the second custom world regulatory
82  *      domain. All other devices will world roam.
83  * @HWSIM_REGTEST_STRICT_FOLLOW_: Used for testing strict regulatory domain
84  *      settings, only the first radio will send a regulatory domain request
85  *      and use strict settings. The rest of the radios are expected to follow.
86  * @HWSIM_REGTEST_STRICT_ALL: Used for testing strict regulatory domain
87  *      settings. All radios will adhere to this.
88  * @HWSIM_REGTEST_STRICT_AND_DRIVER_REG: Used for testing strict regulatory
89  *      domain settings, combined with secondary driver regulatory domain
90  *      settings. The first radio will get a strict regulatory domain setting
91  *      using the first driver regulatory request and the second radio will use
92  *      non-strict settings using the second driver regulatory request. All
93  *      other devices should follow the intersection created between the
94  *      first two.
95  * @HWSIM_REGTEST_ALL: Used for testing every possible mix. You will need
96  *      at least 6 radios for a complete test. We will test in this order:
97  *      1 - driver custom world regulatory domain
98  *      2 - second custom world regulatory domain
99  *      3 - first driver regulatory domain request
100  *      4 - second driver regulatory domain request
101  *      5 - strict regulatory domain settings using the third driver regulatory
102  *          domain request
103  *      6 and on - should follow the intersection of the 3rd, 4rth and 5th radio
104  *                 regulatory requests.
105  */
106 enum hwsim_regtest {
107         HWSIM_REGTEST_DISABLED = 0,
108         HWSIM_REGTEST_DRIVER_REG_FOLLOW = 1,
109         HWSIM_REGTEST_DRIVER_REG_ALL = 2,
110         HWSIM_REGTEST_DIFF_COUNTRY = 3,
111         HWSIM_REGTEST_WORLD_ROAM = 4,
112         HWSIM_REGTEST_CUSTOM_WORLD = 5,
113         HWSIM_REGTEST_CUSTOM_WORLD_2 = 6,
114         HWSIM_REGTEST_STRICT_FOLLOW = 7,
115         HWSIM_REGTEST_STRICT_ALL = 8,
116         HWSIM_REGTEST_STRICT_AND_DRIVER_REG = 9,
117         HWSIM_REGTEST_ALL = 10,
118 };
119
120 /* Set to one of the HWSIM_REGTEST_* values above */
121 static int regtest = HWSIM_REGTEST_DISABLED;
122 module_param(regtest, int, 0444);
123 MODULE_PARM_DESC(regtest, "The type of regulatory test we want to run");
124
125 static const char *hwsim_alpha2s[] = {
126         "FI",
127         "AL",
128         "US",
129         "DE",
130         "JP",
131         "AL",
132 };
133
134 static const struct ieee80211_regdomain hwsim_world_regdom_custom_01 = {
135         .n_reg_rules = 4,
136         .alpha2 =  "99",
137         .reg_rules = {
138                 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
139                 REG_RULE(2484-10, 2484+10, 40, 0, 20, 0),
140                 REG_RULE(5150-10, 5240+10, 40, 0, 30, 0),
141                 REG_RULE(5745-10, 5825+10, 40, 0, 30, 0),
142         }
143 };
144
145 static const struct ieee80211_regdomain hwsim_world_regdom_custom_02 = {
146         .n_reg_rules = 2,
147         .alpha2 =  "99",
148         .reg_rules = {
149                 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
150                 REG_RULE(5725-10, 5850+10, 40, 0, 30,
151                         NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS),
152         }
153 };
154
155 struct hwsim_vif_priv {
156         u32 magic;
157         u8 bssid[ETH_ALEN];
158         bool assoc;
159         u16 aid;
160 };
161
162 #define HWSIM_VIF_MAGIC 0x69537748
163
164 static inline void hwsim_check_magic(struct ieee80211_vif *vif)
165 {
166         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
167         WARN_ON(vp->magic != HWSIM_VIF_MAGIC);
168 }
169
170 static inline void hwsim_set_magic(struct ieee80211_vif *vif)
171 {
172         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
173         vp->magic = HWSIM_VIF_MAGIC;
174 }
175
176 static inline void hwsim_clear_magic(struct ieee80211_vif *vif)
177 {
178         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
179         vp->magic = 0;
180 }
181
182 struct hwsim_sta_priv {
183         u32 magic;
184 };
185
186 #define HWSIM_STA_MAGIC 0x6d537748
187
188 static inline void hwsim_check_sta_magic(struct ieee80211_sta *sta)
189 {
190         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
191         WARN_ON(sp->magic != HWSIM_STA_MAGIC);
192 }
193
194 static inline void hwsim_set_sta_magic(struct ieee80211_sta *sta)
195 {
196         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
197         sp->magic = HWSIM_STA_MAGIC;
198 }
199
200 static inline void hwsim_clear_sta_magic(struct ieee80211_sta *sta)
201 {
202         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
203         sp->magic = 0;
204 }
205
206 static struct class *hwsim_class;
207
208 static struct net_device *hwsim_mon; /* global monitor netdev */
209
210 #define CHAN2G(_freq)  { \
211         .band = IEEE80211_BAND_2GHZ, \
212         .center_freq = (_freq), \
213         .hw_value = (_freq), \
214         .max_power = 20, \
215 }
216
217 #define CHAN5G(_freq) { \
218         .band = IEEE80211_BAND_5GHZ, \
219         .center_freq = (_freq), \
220         .hw_value = (_freq), \
221         .max_power = 20, \
222 }
223
224 static const struct ieee80211_channel hwsim_channels_2ghz[] = {
225         CHAN2G(2412), /* Channel 1 */
226         CHAN2G(2417), /* Channel 2 */
227         CHAN2G(2422), /* Channel 3 */
228         CHAN2G(2427), /* Channel 4 */
229         CHAN2G(2432), /* Channel 5 */
230         CHAN2G(2437), /* Channel 6 */
231         CHAN2G(2442), /* Channel 7 */
232         CHAN2G(2447), /* Channel 8 */
233         CHAN2G(2452), /* Channel 9 */
234         CHAN2G(2457), /* Channel 10 */
235         CHAN2G(2462), /* Channel 11 */
236         CHAN2G(2467), /* Channel 12 */
237         CHAN2G(2472), /* Channel 13 */
238         CHAN2G(2484), /* Channel 14 */
239 };
240
241 static const struct ieee80211_channel hwsim_channels_5ghz[] = {
242         CHAN5G(5180), /* Channel 36 */
243         CHAN5G(5200), /* Channel 40 */
244         CHAN5G(5220), /* Channel 44 */
245         CHAN5G(5240), /* Channel 48 */
246
247         CHAN5G(5260), /* Channel 52 */
248         CHAN5G(5280), /* Channel 56 */
249         CHAN5G(5300), /* Channel 60 */
250         CHAN5G(5320), /* Channel 64 */
251
252         CHAN5G(5500), /* Channel 100 */
253         CHAN5G(5520), /* Channel 104 */
254         CHAN5G(5540), /* Channel 108 */
255         CHAN5G(5560), /* Channel 112 */
256         CHAN5G(5580), /* Channel 116 */
257         CHAN5G(5600), /* Channel 120 */
258         CHAN5G(5620), /* Channel 124 */
259         CHAN5G(5640), /* Channel 128 */
260         CHAN5G(5660), /* Channel 132 */
261         CHAN5G(5680), /* Channel 136 */
262         CHAN5G(5700), /* Channel 140 */
263
264         CHAN5G(5745), /* Channel 149 */
265         CHAN5G(5765), /* Channel 153 */
266         CHAN5G(5785), /* Channel 157 */
267         CHAN5G(5805), /* Channel 161 */
268         CHAN5G(5825), /* Channel 165 */
269 };
270
271 static const struct ieee80211_rate hwsim_rates[] = {
272         { .bitrate = 10 },
273         { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
274         { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
275         { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
276         { .bitrate = 60 },
277         { .bitrate = 90 },
278         { .bitrate = 120 },
279         { .bitrate = 180 },
280         { .bitrate = 240 },
281         { .bitrate = 360 },
282         { .bitrate = 480 },
283         { .bitrate = 540 }
284 };
285
286 static spinlock_t hwsim_radio_lock;
287 static struct list_head hwsim_radios;
288
289 struct mac80211_hwsim_data {
290         struct list_head list;
291         struct ieee80211_hw *hw;
292         struct device *dev;
293         struct ieee80211_supported_band bands[2];
294         struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)];
295         struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)];
296         struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
297
298         struct mac_address addresses[2];
299
300         struct ieee80211_channel *channel;
301         unsigned long beacon_int; /* in jiffies unit */
302         unsigned int rx_filter;
303         bool started, idle, scanning;
304         struct mutex mutex;
305         struct timer_list beacon_timer;
306         enum ps_mode {
307                 PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
308         } ps;
309         bool ps_poll_pending;
310         struct dentry *debugfs;
311         struct dentry *debugfs_ps;
312
313         struct sk_buff_head pending;    /* packets pending */
314         /*
315          * Only radios in the same group can communicate together (the
316          * channel has to match too). Each bit represents a group. A
317          * radio can be in more then one group.
318          */
319         u64 group;
320         struct dentry *debugfs_group;
321
322         int power_level;
323 };
324
325
326 struct hwsim_radiotap_hdr {
327         struct ieee80211_radiotap_header hdr;
328         u8 rt_flags;
329         u8 rt_rate;
330         __le16 rt_channel;
331         __le16 rt_chbitmask;
332 } __packed;
333
334 /* MAC80211_HWSIM netlinf family */
335 static struct genl_family hwsim_genl_family = {
336         .id = GENL_ID_GENERATE,
337         .hdrsize = 0,
338         .name = "MAC80211_HWSIM",
339         .version = 1,
340         .maxattr = HWSIM_ATTR_MAX,
341 };
342
343 /* MAC80211_HWSIM netlink policy */
344
345 static struct nla_policy hwsim_genl_policy[HWSIM_ATTR_MAX + 1] = {
346         [HWSIM_ATTR_ADDR_RECEIVER] = { .type = NLA_UNSPEC,
347                                        .len = 6*sizeof(u8) },
348         [HWSIM_ATTR_ADDR_TRANSMITTER] = { .type = NLA_UNSPEC,
349                                           .len = 6*sizeof(u8) },
350         [HWSIM_ATTR_FRAME] = { .type = NLA_BINARY,
351                                .len = IEEE80211_MAX_DATA_LEN },
352         [HWSIM_ATTR_FLAGS] = { .type = NLA_U32 },
353         [HWSIM_ATTR_RX_RATE] = { .type = NLA_U32 },
354         [HWSIM_ATTR_SIGNAL] = { .type = NLA_U32 },
355         [HWSIM_ATTR_TX_INFO] = { .type = NLA_UNSPEC,
356                                  .len = IEEE80211_TX_MAX_RATES*sizeof(
357                                         struct hwsim_tx_rate)},
358         [HWSIM_ATTR_COOKIE] = { .type = NLA_U64 },
359 };
360
361 static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
362                                         struct net_device *dev)
363 {
364         /* TODO: allow packet injection */
365         dev_kfree_skb(skb);
366         return NETDEV_TX_OK;
367 }
368
369
370 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
371                                       struct sk_buff *tx_skb)
372 {
373         struct mac80211_hwsim_data *data = hw->priv;
374         struct sk_buff *skb;
375         struct hwsim_radiotap_hdr *hdr;
376         u16 flags;
377         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
378         struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
379
380         if (!netif_running(hwsim_mon))
381                 return;
382
383         skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
384         if (skb == NULL)
385                 return;
386
387         hdr = (struct hwsim_radiotap_hdr *) skb_push(skb, sizeof(*hdr));
388         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
389         hdr->hdr.it_pad = 0;
390         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
391         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
392                                           (1 << IEEE80211_RADIOTAP_RATE) |
393                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
394         hdr->rt_flags = 0;
395         hdr->rt_rate = txrate->bitrate / 5;
396         hdr->rt_channel = cpu_to_le16(data->channel->center_freq);
397         flags = IEEE80211_CHAN_2GHZ;
398         if (txrate->flags & IEEE80211_RATE_ERP_G)
399                 flags |= IEEE80211_CHAN_OFDM;
400         else
401                 flags |= IEEE80211_CHAN_CCK;
402         hdr->rt_chbitmask = cpu_to_le16(flags);
403
404         skb->dev = hwsim_mon;
405         skb_set_mac_header(skb, 0);
406         skb->ip_summed = CHECKSUM_UNNECESSARY;
407         skb->pkt_type = PACKET_OTHERHOST;
408         skb->protocol = htons(ETH_P_802_2);
409         memset(skb->cb, 0, sizeof(skb->cb));
410         netif_rx(skb);
411 }
412
413
414 static void mac80211_hwsim_monitor_ack(struct ieee80211_hw *hw, const u8 *addr)
415 {
416         struct mac80211_hwsim_data *data = hw->priv;
417         struct sk_buff *skb;
418         struct hwsim_radiotap_hdr *hdr;
419         u16 flags;
420         struct ieee80211_hdr *hdr11;
421
422         if (!netif_running(hwsim_mon))
423                 return;
424
425         skb = dev_alloc_skb(100);
426         if (skb == NULL)
427                 return;
428
429         hdr = (struct hwsim_radiotap_hdr *) skb_put(skb, sizeof(*hdr));
430         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
431         hdr->hdr.it_pad = 0;
432         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
433         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
434                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
435         hdr->rt_flags = 0;
436         hdr->rt_rate = 0;
437         hdr->rt_channel = cpu_to_le16(data->channel->center_freq);
438         flags = IEEE80211_CHAN_2GHZ;
439         hdr->rt_chbitmask = cpu_to_le16(flags);
440
441         hdr11 = (struct ieee80211_hdr *) skb_put(skb, 10);
442         hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
443                                            IEEE80211_STYPE_ACK);
444         hdr11->duration_id = cpu_to_le16(0);
445         memcpy(hdr11->addr1, addr, ETH_ALEN);
446
447         skb->dev = hwsim_mon;
448         skb_set_mac_header(skb, 0);
449         skb->ip_summed = CHECKSUM_UNNECESSARY;
450         skb->pkt_type = PACKET_OTHERHOST;
451         skb->protocol = htons(ETH_P_802_2);
452         memset(skb->cb, 0, sizeof(skb->cb));
453         netif_rx(skb);
454 }
455
456
457 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
458                            struct sk_buff *skb)
459 {
460         switch (data->ps) {
461         case PS_DISABLED:
462                 return true;
463         case PS_ENABLED:
464                 return false;
465         case PS_AUTO_POLL:
466                 /* TODO: accept (some) Beacons by default and other frames only
467                  * if pending PS-Poll has been sent */
468                 return true;
469         case PS_MANUAL_POLL:
470                 /* Allow unicast frames to own address if there is a pending
471                  * PS-Poll */
472                 if (data->ps_poll_pending &&
473                     memcmp(data->hw->wiphy->perm_addr, skb->data + 4,
474                            ETH_ALEN) == 0) {
475                         data->ps_poll_pending = false;
476                         return true;
477                 }
478                 return false;
479         }
480
481         return true;
482 }
483
484
485 struct mac80211_hwsim_addr_match_data {
486         bool ret;
487         const u8 *addr;
488 };
489
490 static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
491                                      struct ieee80211_vif *vif)
492 {
493         struct mac80211_hwsim_addr_match_data *md = data;
494         if (memcmp(mac, md->addr, ETH_ALEN) == 0)
495                 md->ret = true;
496 }
497
498
499 static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
500                                       const u8 *addr)
501 {
502         struct mac80211_hwsim_addr_match_data md;
503
504         if (memcmp(addr, data->hw->wiphy->perm_addr, ETH_ALEN) == 0)
505                 return true;
506
507         md.ret = false;
508         md.addr = addr;
509         ieee80211_iterate_active_interfaces_atomic(data->hw,
510                                                    mac80211_hwsim_addr_iter,
511                                                    &md);
512
513         return md.ret;
514 }
515
516 static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
517                                        struct sk_buff *my_skb,
518                                        int dst_pid)
519 {
520         struct sk_buff *skb;
521         struct mac80211_hwsim_data *data = hw->priv;
522         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) my_skb->data;
523         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(my_skb);
524         void *msg_head;
525         unsigned int hwsim_flags = 0;
526         int i;
527         struct hwsim_tx_rate tx_attempts[IEEE80211_TX_MAX_RATES];
528
529         if (data->idle) {
530                 wiphy_debug(hw->wiphy, "Trying to TX when idle - reject\n");
531                 dev_kfree_skb(my_skb);
532                 return;
533         }
534
535         if (data->ps != PS_DISABLED)
536                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
537         /* If the queue contains MAX_QUEUE skb's drop some */
538         if (skb_queue_len(&data->pending) >= MAX_QUEUE) {
539                 /* Droping until WARN_QUEUE level */
540                 while (skb_queue_len(&data->pending) >= WARN_QUEUE)
541                         skb_dequeue(&data->pending);
542         }
543
544         skb = genlmsg_new(NLMSG_GOODSIZE, GFP_ATOMIC);
545         if (skb == NULL)
546                 goto nla_put_failure;
547
548         msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
549                                HWSIM_CMD_FRAME);
550         if (msg_head == NULL) {
551                 printk(KERN_DEBUG "mac80211_hwsim: problem with msg_head\n");
552                 goto nla_put_failure;
553         }
554
555         NLA_PUT(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
556                      sizeof(struct mac_address), data->addresses[1].addr);
557
558         /* We get the skb->data */
559         NLA_PUT(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data);
560
561         /* We get the flags for this transmission, and we translate them to
562            wmediumd flags  */
563
564         if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
565                 hwsim_flags |= HWSIM_TX_CTL_REQ_TX_STATUS;
566
567         if (info->flags & IEEE80211_TX_CTL_NO_ACK)
568                 hwsim_flags |= HWSIM_TX_CTL_NO_ACK;
569
570         NLA_PUT_U32(skb, HWSIM_ATTR_FLAGS, hwsim_flags);
571
572         /* We get the tx control (rate and retries) info*/
573
574         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
575                 tx_attempts[i].idx = info->status.rates[i].idx;
576                 tx_attempts[i].count = info->status.rates[i].count;
577         }
578
579         NLA_PUT(skb, HWSIM_ATTR_TX_INFO,
580                      sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
581                      tx_attempts);
582
583         /* We create a cookie to identify this skb */
584         NLA_PUT_U64(skb, HWSIM_ATTR_COOKIE, (unsigned long) my_skb);
585
586         genlmsg_end(skb, msg_head);
587         genlmsg_unicast(&init_net, skb, dst_pid);
588
589         /* Enqueue the packet */
590         skb_queue_tail(&data->pending, my_skb);
591         return;
592
593 nla_put_failure:
594         printk(KERN_DEBUG "mac80211_hwsim: error occured in %s\n", __func__);
595 }
596
597 static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
598                                           struct sk_buff *skb)
599 {
600         struct mac80211_hwsim_data *data = hw->priv, *data2;
601         bool ack = false;
602         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
603         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
604         struct ieee80211_rx_status rx_status;
605
606         if (data->idle) {
607                 wiphy_debug(hw->wiphy, "Trying to TX when idle - reject\n");
608                 return false;
609         }
610
611         memset(&rx_status, 0, sizeof(rx_status));
612         /* TODO: set mactime */
613         rx_status.freq = data->channel->center_freq;
614         rx_status.band = data->channel->band;
615         rx_status.rate_idx = info->control.rates[0].idx;
616         if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
617                 rx_status.flag |= RX_FLAG_HT;
618         if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
619                 rx_status.flag |= RX_FLAG_40MHZ;
620         if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
621                 rx_status.flag |= RX_FLAG_SHORT_GI;
622         /* TODO: simulate real signal strength (and optional packet loss) */
623         rx_status.signal = data->power_level - 50;
624
625         if (data->ps != PS_DISABLED)
626                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
627
628         /* release the skb's source info */
629         skb_orphan(skb);
630         skb_dst_drop(skb);
631         skb->mark = 0;
632         secpath_reset(skb);
633         nf_reset(skb);
634
635         /* Copy skb to all enabled radios that are on the current frequency */
636         spin_lock(&hwsim_radio_lock);
637         list_for_each_entry(data2, &hwsim_radios, list) {
638                 struct sk_buff *nskb;
639
640                 if (data == data2)
641                         continue;
642
643                 if (data2->idle || !data2->started ||
644                     !hwsim_ps_rx_ok(data2, skb) ||
645                     !data->channel || !data2->channel ||
646                     data->channel->center_freq != data2->channel->center_freq ||
647                     !(data->group & data2->group))
648                         continue;
649
650                 nskb = skb_copy(skb, GFP_ATOMIC);
651                 if (nskb == NULL)
652                         continue;
653
654                 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
655                         ack = true;
656                 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
657                 ieee80211_rx_irqsafe(data2->hw, nskb);
658         }
659         spin_unlock(&hwsim_radio_lock);
660
661         return ack;
662 }
663
664 static void mac80211_hwsim_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
665 {
666         bool ack;
667         struct ieee80211_tx_info *txi;
668         int _pid;
669
670         mac80211_hwsim_monitor_rx(hw, skb);
671
672         if (skb->len < 10) {
673                 /* Should not happen; just a sanity check for addr1 use */
674                 dev_kfree_skb(skb);
675                 return;
676         }
677
678         /* wmediumd mode check */
679         _pid = wmediumd_pid;
680
681         if (_pid)
682                 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
683
684         /* NO wmediumd detected, perfect medium simulation */
685         ack = mac80211_hwsim_tx_frame_no_nl(hw, skb);
686
687         if (ack && skb->len >= 16) {
688                 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
689                 mac80211_hwsim_monitor_ack(hw, hdr->addr2);
690         }
691
692         txi = IEEE80211_SKB_CB(skb);
693
694         if (txi->control.vif)
695                 hwsim_check_magic(txi->control.vif);
696         if (txi->control.sta)
697                 hwsim_check_sta_magic(txi->control.sta);
698
699         ieee80211_tx_info_clear_status(txi);
700         if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
701                 txi->flags |= IEEE80211_TX_STAT_ACK;
702         ieee80211_tx_status_irqsafe(hw, skb);
703 }
704
705
706 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
707 {
708         struct mac80211_hwsim_data *data = hw->priv;
709         wiphy_debug(hw->wiphy, "%s\n", __func__);
710         data->started = 1;
711         return 0;
712 }
713
714
715 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
716 {
717         struct mac80211_hwsim_data *data = hw->priv;
718         data->started = 0;
719         del_timer(&data->beacon_timer);
720         wiphy_debug(hw->wiphy, "%s\n", __func__);
721 }
722
723
724 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
725                                         struct ieee80211_vif *vif)
726 {
727         wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
728                     __func__, ieee80211_vif_type_p2p(vif),
729                     vif->addr);
730         hwsim_set_magic(vif);
731         return 0;
732 }
733
734
735 static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
736                                            struct ieee80211_vif *vif,
737                                            enum nl80211_iftype newtype,
738                                            bool newp2p)
739 {
740         newtype = ieee80211_iftype_p2p(newtype, newp2p);
741         wiphy_debug(hw->wiphy,
742                     "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
743                     __func__, ieee80211_vif_type_p2p(vif),
744                     newtype, vif->addr);
745         hwsim_check_magic(vif);
746
747         return 0;
748 }
749
750 static void mac80211_hwsim_remove_interface(
751         struct ieee80211_hw *hw, struct ieee80211_vif *vif)
752 {
753         wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
754                     __func__, ieee80211_vif_type_p2p(vif),
755                     vif->addr);
756         hwsim_check_magic(vif);
757         hwsim_clear_magic(vif);
758 }
759
760
761 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
762                                      struct ieee80211_vif *vif)
763 {
764         struct ieee80211_hw *hw = arg;
765         struct sk_buff *skb;
766         struct ieee80211_tx_info *info;
767         int _pid;
768
769         hwsim_check_magic(vif);
770
771         if (vif->type != NL80211_IFTYPE_AP &&
772             vif->type != NL80211_IFTYPE_MESH_POINT &&
773             vif->type != NL80211_IFTYPE_ADHOC)
774                 return;
775
776         skb = ieee80211_beacon_get(hw, vif);
777         if (skb == NULL)
778                 return;
779         info = IEEE80211_SKB_CB(skb);
780
781         mac80211_hwsim_monitor_rx(hw, skb);
782
783         /* wmediumd mode check */
784         _pid = wmediumd_pid;
785
786         if (_pid)
787                 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
788
789         mac80211_hwsim_tx_frame_no_nl(hw, skb);
790         dev_kfree_skb(skb);
791 }
792
793
794 static void mac80211_hwsim_beacon(unsigned long arg)
795 {
796         struct ieee80211_hw *hw = (struct ieee80211_hw *) arg;
797         struct mac80211_hwsim_data *data = hw->priv;
798
799         if (!data->started)
800                 return;
801
802         ieee80211_iterate_active_interfaces_atomic(
803                 hw, mac80211_hwsim_beacon_tx, hw);
804
805         data->beacon_timer.expires = jiffies + data->beacon_int;
806         add_timer(&data->beacon_timer);
807 }
808
809 static const char *hwsim_chantypes[] = {
810         [NL80211_CHAN_NO_HT] = "noht",
811         [NL80211_CHAN_HT20] = "ht20",
812         [NL80211_CHAN_HT40MINUS] = "ht40-",
813         [NL80211_CHAN_HT40PLUS] = "ht40+",
814 };
815
816 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
817 {
818         struct mac80211_hwsim_data *data = hw->priv;
819         struct ieee80211_conf *conf = &hw->conf;
820         static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
821                 [IEEE80211_SMPS_AUTOMATIC] = "auto",
822                 [IEEE80211_SMPS_OFF] = "off",
823                 [IEEE80211_SMPS_STATIC] = "static",
824                 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
825         };
826
827         wiphy_debug(hw->wiphy,
828                     "%s (freq=%d/%s idle=%d ps=%d smps=%s)\n",
829                     __func__,
830                     conf->channel->center_freq,
831                     hwsim_chantypes[conf->channel_type],
832                     !!(conf->flags & IEEE80211_CONF_IDLE),
833                     !!(conf->flags & IEEE80211_CONF_PS),
834                     smps_modes[conf->smps_mode]);
835
836         data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
837
838         data->channel = conf->channel;
839         data->power_level = conf->power_level;
840         if (!data->started || !data->beacon_int)
841                 del_timer(&data->beacon_timer);
842         else
843                 mod_timer(&data->beacon_timer, jiffies + data->beacon_int);
844
845         return 0;
846 }
847
848
849 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
850                                             unsigned int changed_flags,
851                                             unsigned int *total_flags,u64 multicast)
852 {
853         struct mac80211_hwsim_data *data = hw->priv;
854
855         wiphy_debug(hw->wiphy, "%s\n", __func__);
856
857         data->rx_filter = 0;
858         if (*total_flags & FIF_PROMISC_IN_BSS)
859                 data->rx_filter |= FIF_PROMISC_IN_BSS;
860         if (*total_flags & FIF_ALLMULTI)
861                 data->rx_filter |= FIF_ALLMULTI;
862
863         *total_flags = data->rx_filter;
864 }
865
866 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
867                                             struct ieee80211_vif *vif,
868                                             struct ieee80211_bss_conf *info,
869                                             u32 changed)
870 {
871         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
872         struct mac80211_hwsim_data *data = hw->priv;
873
874         hwsim_check_magic(vif);
875
876         wiphy_debug(hw->wiphy, "%s(changed=0x%x)\n", __func__, changed);
877
878         if (changed & BSS_CHANGED_BSSID) {
879                 wiphy_debug(hw->wiphy, "%s: BSSID changed: %pM\n",
880                             __func__, info->bssid);
881                 memcpy(vp->bssid, info->bssid, ETH_ALEN);
882         }
883
884         if (changed & BSS_CHANGED_ASSOC) {
885                 wiphy_debug(hw->wiphy, "  ASSOC: assoc=%d aid=%d\n",
886                             info->assoc, info->aid);
887                 vp->assoc = info->assoc;
888                 vp->aid = info->aid;
889         }
890
891         if (changed & BSS_CHANGED_BEACON_INT) {
892                 wiphy_debug(hw->wiphy, "  BCNINT: %d\n", info->beacon_int);
893                 data->beacon_int = 1024 * info->beacon_int / 1000 * HZ / 1000;
894                 if (WARN_ON(!data->beacon_int))
895                         data->beacon_int = 1;
896                 if (data->started)
897                         mod_timer(&data->beacon_timer,
898                                   jiffies + data->beacon_int);
899         }
900
901         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
902                 wiphy_debug(hw->wiphy, "  ERP_CTS_PROT: %d\n",
903                             info->use_cts_prot);
904         }
905
906         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
907                 wiphy_debug(hw->wiphy, "  ERP_PREAMBLE: %d\n",
908                             info->use_short_preamble);
909         }
910
911         if (changed & BSS_CHANGED_ERP_SLOT) {
912                 wiphy_debug(hw->wiphy, "  ERP_SLOT: %d\n", info->use_short_slot);
913         }
914
915         if (changed & BSS_CHANGED_HT) {
916                 wiphy_debug(hw->wiphy, "  HT: op_mode=0x%x, chantype=%s\n",
917                             info->ht_operation_mode,
918                             hwsim_chantypes[info->channel_type]);
919         }
920
921         if (changed & BSS_CHANGED_BASIC_RATES) {
922                 wiphy_debug(hw->wiphy, "  BASIC_RATES: 0x%llx\n",
923                             (unsigned long long) info->basic_rates);
924         }
925 }
926
927 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
928                                   struct ieee80211_vif *vif,
929                                   struct ieee80211_sta *sta)
930 {
931         hwsim_check_magic(vif);
932         hwsim_set_sta_magic(sta);
933
934         return 0;
935 }
936
937 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
938                                      struct ieee80211_vif *vif,
939                                      struct ieee80211_sta *sta)
940 {
941         hwsim_check_magic(vif);
942         hwsim_clear_sta_magic(sta);
943
944         return 0;
945 }
946
947 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
948                                       struct ieee80211_vif *vif,
949                                       enum sta_notify_cmd cmd,
950                                       struct ieee80211_sta *sta)
951 {
952         hwsim_check_magic(vif);
953
954         switch (cmd) {
955         case STA_NOTIFY_SLEEP:
956         case STA_NOTIFY_AWAKE:
957                 /* TODO: make good use of these flags */
958                 break;
959         default:
960                 WARN(1, "Invalid sta notify: %d\n", cmd);
961                 break;
962         }
963 }
964
965 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
966                                   struct ieee80211_sta *sta,
967                                   bool set)
968 {
969         hwsim_check_sta_magic(sta);
970         return 0;
971 }
972
973 static int mac80211_hwsim_conf_tx(
974         struct ieee80211_hw *hw,
975         struct ieee80211_vif *vif, u16 queue,
976         const struct ieee80211_tx_queue_params *params)
977 {
978         wiphy_debug(hw->wiphy,
979                     "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
980                     __func__, queue,
981                     params->txop, params->cw_min,
982                     params->cw_max, params->aifs);
983         return 0;
984 }
985
986 static int mac80211_hwsim_get_survey(
987         struct ieee80211_hw *hw, int idx,
988         struct survey_info *survey)
989 {
990         struct ieee80211_conf *conf = &hw->conf;
991
992         wiphy_debug(hw->wiphy, "%s (idx=%d)\n", __func__, idx);
993
994         if (idx != 0)
995                 return -ENOENT;
996
997         /* Current channel */
998         survey->channel = conf->channel;
999
1000         /*
1001          * Magically conjured noise level --- this is only ok for simulated hardware.
1002          *
1003          * A real driver which cannot determine the real channel noise MUST NOT
1004          * report any noise, especially not a magically conjured one :-)
1005          */
1006         survey->filled = SURVEY_INFO_NOISE_DBM;
1007         survey->noise = -92;
1008
1009         return 0;
1010 }
1011
1012 #ifdef CONFIG_NL80211_TESTMODE
1013 /*
1014  * This section contains example code for using netlink
1015  * attributes with the testmode command in nl80211.
1016  */
1017
1018 /* These enums need to be kept in sync with userspace */
1019 enum hwsim_testmode_attr {
1020         __HWSIM_TM_ATTR_INVALID = 0,
1021         HWSIM_TM_ATTR_CMD       = 1,
1022         HWSIM_TM_ATTR_PS        = 2,
1023
1024         /* keep last */
1025         __HWSIM_TM_ATTR_AFTER_LAST,
1026         HWSIM_TM_ATTR_MAX       = __HWSIM_TM_ATTR_AFTER_LAST - 1
1027 };
1028
1029 enum hwsim_testmode_cmd {
1030         HWSIM_TM_CMD_SET_PS             = 0,
1031         HWSIM_TM_CMD_GET_PS             = 1,
1032 };
1033
1034 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
1035         [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
1036         [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
1037 };
1038
1039 static int hwsim_fops_ps_write(void *dat, u64 val);
1040
1041 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
1042                                        void *data, int len)
1043 {
1044         struct mac80211_hwsim_data *hwsim = hw->priv;
1045         struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
1046         struct sk_buff *skb;
1047         int err, ps;
1048
1049         err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
1050                         hwsim_testmode_policy);
1051         if (err)
1052                 return err;
1053
1054         if (!tb[HWSIM_TM_ATTR_CMD])
1055                 return -EINVAL;
1056
1057         switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
1058         case HWSIM_TM_CMD_SET_PS:
1059                 if (!tb[HWSIM_TM_ATTR_PS])
1060                         return -EINVAL;
1061                 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
1062                 return hwsim_fops_ps_write(hwsim, ps);
1063         case HWSIM_TM_CMD_GET_PS:
1064                 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
1065                                                 nla_total_size(sizeof(u32)));
1066                 if (!skb)
1067                         return -ENOMEM;
1068                 NLA_PUT_U32(skb, HWSIM_TM_ATTR_PS, hwsim->ps);
1069                 return cfg80211_testmode_reply(skb);
1070         default:
1071                 return -EOPNOTSUPP;
1072         }
1073
1074  nla_put_failure:
1075         kfree_skb(skb);
1076         return -ENOBUFS;
1077 }
1078 #endif
1079
1080 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
1081                                        struct ieee80211_vif *vif,
1082                                        enum ieee80211_ampdu_mlme_action action,
1083                                        struct ieee80211_sta *sta, u16 tid, u16 *ssn,
1084                                        u8 buf_size)
1085 {
1086         switch (action) {
1087         case IEEE80211_AMPDU_TX_START:
1088                 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1089                 break;
1090         case IEEE80211_AMPDU_TX_STOP:
1091                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1092                 break;
1093         case IEEE80211_AMPDU_TX_OPERATIONAL:
1094                 break;
1095         case IEEE80211_AMPDU_RX_START:
1096         case IEEE80211_AMPDU_RX_STOP:
1097                 break;
1098         default:
1099                 return -EOPNOTSUPP;
1100         }
1101
1102         return 0;
1103 }
1104
1105 static void mac80211_hwsim_flush(struct ieee80211_hw *hw, bool drop)
1106 {
1107         /* Not implemented, queues only on kernel side */
1108 }
1109
1110 struct hw_scan_done {
1111         struct delayed_work w;
1112         struct ieee80211_hw *hw;
1113 };
1114
1115 static void hw_scan_done(struct work_struct *work)
1116 {
1117         struct hw_scan_done *hsd =
1118                 container_of(work, struct hw_scan_done, w.work);
1119
1120         ieee80211_scan_completed(hsd->hw, false);
1121         kfree(hsd);
1122 }
1123
1124 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
1125                                   struct ieee80211_vif *vif,
1126                                   struct cfg80211_scan_request *req)
1127 {
1128         struct hw_scan_done *hsd = kzalloc(sizeof(*hsd), GFP_KERNEL);
1129         int i;
1130
1131         if (!hsd)
1132                 return -ENOMEM;
1133
1134         hsd->hw = hw;
1135         INIT_DELAYED_WORK(&hsd->w, hw_scan_done);
1136
1137         printk(KERN_DEBUG "hwsim hw_scan request\n");
1138         for (i = 0; i < req->n_channels; i++)
1139                 printk(KERN_DEBUG "hwsim hw_scan freq %d\n",
1140                         req->channels[i]->center_freq);
1141         print_hex_dump(KERN_DEBUG, "scan IEs: ", DUMP_PREFIX_OFFSET,
1142                         16, 1, req->ie, req->ie_len, 1);
1143
1144         ieee80211_queue_delayed_work(hw, &hsd->w, 2 * HZ);
1145
1146         return 0;
1147 }
1148
1149 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw)
1150 {
1151         struct mac80211_hwsim_data *hwsim = hw->priv;
1152
1153         mutex_lock(&hwsim->mutex);
1154
1155         if (hwsim->scanning) {
1156                 printk(KERN_DEBUG "two hwsim sw_scans detected!\n");
1157                 goto out;
1158         }
1159
1160         printk(KERN_DEBUG "hwsim sw_scan request, prepping stuff\n");
1161         hwsim->scanning = true;
1162
1163 out:
1164         mutex_unlock(&hwsim->mutex);
1165 }
1166
1167 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw)
1168 {
1169         struct mac80211_hwsim_data *hwsim = hw->priv;
1170
1171         mutex_lock(&hwsim->mutex);
1172
1173         printk(KERN_DEBUG "hwsim sw_scan_complete\n");
1174         hwsim->scanning = false;
1175
1176         mutex_unlock(&hwsim->mutex);
1177 }
1178
1179 static struct ieee80211_ops mac80211_hwsim_ops =
1180 {
1181         .tx = mac80211_hwsim_tx,
1182         .start = mac80211_hwsim_start,
1183         .stop = mac80211_hwsim_stop,
1184         .add_interface = mac80211_hwsim_add_interface,
1185         .change_interface = mac80211_hwsim_change_interface,
1186         .remove_interface = mac80211_hwsim_remove_interface,
1187         .config = mac80211_hwsim_config,
1188         .configure_filter = mac80211_hwsim_configure_filter,
1189         .bss_info_changed = mac80211_hwsim_bss_info_changed,
1190         .sta_add = mac80211_hwsim_sta_add,
1191         .sta_remove = mac80211_hwsim_sta_remove,
1192         .sta_notify = mac80211_hwsim_sta_notify,
1193         .set_tim = mac80211_hwsim_set_tim,
1194         .conf_tx = mac80211_hwsim_conf_tx,
1195         .get_survey = mac80211_hwsim_get_survey,
1196         CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)
1197         .ampdu_action = mac80211_hwsim_ampdu_action,
1198         .sw_scan_start = mac80211_hwsim_sw_scan,
1199         .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
1200         .flush = mac80211_hwsim_flush,
1201 };
1202
1203
1204 static void mac80211_hwsim_free(void)
1205 {
1206         struct list_head tmplist, *i, *tmp;
1207         struct mac80211_hwsim_data *data, *tmpdata;
1208
1209         INIT_LIST_HEAD(&tmplist);
1210
1211         spin_lock_bh(&hwsim_radio_lock);
1212         list_for_each_safe(i, tmp, &hwsim_radios)
1213                 list_move(i, &tmplist);
1214         spin_unlock_bh(&hwsim_radio_lock);
1215
1216         list_for_each_entry_safe(data, tmpdata, &tmplist, list) {
1217                 debugfs_remove(data->debugfs_group);
1218                 debugfs_remove(data->debugfs_ps);
1219                 debugfs_remove(data->debugfs);
1220                 ieee80211_unregister_hw(data->hw);
1221                 device_unregister(data->dev);
1222                 ieee80211_free_hw(data->hw);
1223         }
1224         class_destroy(hwsim_class);
1225 }
1226
1227
1228 static struct device_driver mac80211_hwsim_driver = {
1229         .name = "mac80211_hwsim"
1230 };
1231
1232 static const struct net_device_ops hwsim_netdev_ops = {
1233         .ndo_start_xmit         = hwsim_mon_xmit,
1234         .ndo_change_mtu         = eth_change_mtu,
1235         .ndo_set_mac_address    = eth_mac_addr,
1236         .ndo_validate_addr      = eth_validate_addr,
1237 };
1238
1239 static void hwsim_mon_setup(struct net_device *dev)
1240 {
1241         dev->netdev_ops = &hwsim_netdev_ops;
1242         dev->destructor = free_netdev;
1243         ether_setup(dev);
1244         dev->tx_queue_len = 0;
1245         dev->type = ARPHRD_IEEE80211_RADIOTAP;
1246         memset(dev->dev_addr, 0, ETH_ALEN);
1247         dev->dev_addr[0] = 0x12;
1248 }
1249
1250
1251 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
1252 {
1253         struct mac80211_hwsim_data *data = dat;
1254         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1255         struct sk_buff *skb;
1256         struct ieee80211_pspoll *pspoll;
1257         int _pid;
1258
1259         if (!vp->assoc)
1260                 return;
1261
1262         wiphy_debug(data->hw->wiphy,
1263                     "%s: send PS-Poll to %pM for aid %d\n",
1264                     __func__, vp->bssid, vp->aid);
1265
1266         skb = dev_alloc_skb(sizeof(*pspoll));
1267         if (!skb)
1268                 return;
1269         pspoll = (void *) skb_put(skb, sizeof(*pspoll));
1270         pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
1271                                             IEEE80211_STYPE_PSPOLL |
1272                                             IEEE80211_FCTL_PM);
1273         pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
1274         memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
1275         memcpy(pspoll->ta, mac, ETH_ALEN);
1276
1277         /* wmediumd mode check */
1278         _pid = wmediumd_pid;
1279
1280         if (_pid)
1281                 return mac80211_hwsim_tx_frame_nl(data->hw, skb, _pid);
1282
1283         if (!mac80211_hwsim_tx_frame_no_nl(data->hw, skb))
1284                 printk(KERN_DEBUG "%s: PS-poll frame not ack'ed\n", __func__);
1285         dev_kfree_skb(skb);
1286 }
1287
1288
1289 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
1290                                 struct ieee80211_vif *vif, int ps)
1291 {
1292         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1293         struct sk_buff *skb;
1294         struct ieee80211_hdr *hdr;
1295         int _pid;
1296
1297         if (!vp->assoc)
1298                 return;
1299
1300         wiphy_debug(data->hw->wiphy,
1301                     "%s: send data::nullfunc to %pM ps=%d\n",
1302                     __func__, vp->bssid, ps);
1303
1304         skb = dev_alloc_skb(sizeof(*hdr));
1305         if (!skb)
1306                 return;
1307         hdr = (void *) skb_put(skb, sizeof(*hdr) - ETH_ALEN);
1308         hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
1309                                          IEEE80211_STYPE_NULLFUNC |
1310                                          (ps ? IEEE80211_FCTL_PM : 0));
1311         hdr->duration_id = cpu_to_le16(0);
1312         memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
1313         memcpy(hdr->addr2, mac, ETH_ALEN);
1314         memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
1315
1316         /* wmediumd mode check */
1317         _pid = wmediumd_pid;
1318
1319         if (_pid)
1320                 return mac80211_hwsim_tx_frame_nl(data->hw, skb, _pid);
1321
1322         if (!mac80211_hwsim_tx_frame_no_nl(data->hw, skb))
1323                 printk(KERN_DEBUG "%s: nullfunc frame not ack'ed\n", __func__);
1324         dev_kfree_skb(skb);
1325 }
1326
1327
1328 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
1329                                    struct ieee80211_vif *vif)
1330 {
1331         struct mac80211_hwsim_data *data = dat;
1332         hwsim_send_nullfunc(data, mac, vif, 1);
1333 }
1334
1335
1336 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
1337                                       struct ieee80211_vif *vif)
1338 {
1339         struct mac80211_hwsim_data *data = dat;
1340         hwsim_send_nullfunc(data, mac, vif, 0);
1341 }
1342
1343
1344 static int hwsim_fops_ps_read(void *dat, u64 *val)
1345 {
1346         struct mac80211_hwsim_data *data = dat;
1347         *val = data->ps;
1348         return 0;
1349 }
1350
1351 static int hwsim_fops_ps_write(void *dat, u64 val)
1352 {
1353         struct mac80211_hwsim_data *data = dat;
1354         enum ps_mode old_ps;
1355
1356         if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
1357             val != PS_MANUAL_POLL)
1358                 return -EINVAL;
1359
1360         old_ps = data->ps;
1361         data->ps = val;
1362
1363         if (val == PS_MANUAL_POLL) {
1364                 ieee80211_iterate_active_interfaces(data->hw,
1365                                                     hwsim_send_ps_poll, data);
1366                 data->ps_poll_pending = true;
1367         } else if (old_ps == PS_DISABLED && val != PS_DISABLED) {
1368                 ieee80211_iterate_active_interfaces(data->hw,
1369                                                     hwsim_send_nullfunc_ps,
1370                                                     data);
1371         } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
1372                 ieee80211_iterate_active_interfaces(data->hw,
1373                                                     hwsim_send_nullfunc_no_ps,
1374                                                     data);
1375         }
1376
1377         return 0;
1378 }
1379
1380 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
1381                         "%llu\n");
1382
1383
1384 static int hwsim_fops_group_read(void *dat, u64 *val)
1385 {
1386         struct mac80211_hwsim_data *data = dat;
1387         *val = data->group;
1388         return 0;
1389 }
1390
1391 static int hwsim_fops_group_write(void *dat, u64 val)
1392 {
1393         struct mac80211_hwsim_data *data = dat;
1394         data->group = val;
1395         return 0;
1396 }
1397
1398 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
1399                         hwsim_fops_group_read, hwsim_fops_group_write,
1400                         "%llx\n");
1401
1402 struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(
1403                              struct mac_address *addr)
1404 {
1405         struct mac80211_hwsim_data *data;
1406         bool _found = false;
1407
1408         spin_lock_bh(&hwsim_radio_lock);
1409         list_for_each_entry(data, &hwsim_radios, list) {
1410                 if (memcmp(data->addresses[1].addr, addr,
1411                           sizeof(struct mac_address)) == 0) {
1412                         _found = true;
1413                         break;
1414                 }
1415         }
1416         spin_unlock_bh(&hwsim_radio_lock);
1417
1418         if (!_found)
1419                 return NULL;
1420
1421         return data;
1422 }
1423
1424 static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
1425                                            struct genl_info *info)
1426 {
1427
1428         struct ieee80211_hdr *hdr;
1429         struct mac80211_hwsim_data *data2;
1430         struct ieee80211_tx_info *txi;
1431         struct hwsim_tx_rate *tx_attempts;
1432         struct sk_buff __user *ret_skb;
1433         struct sk_buff *skb, *tmp;
1434         struct mac_address *src;
1435         unsigned int hwsim_flags;
1436
1437         int i;
1438         bool found = false;
1439
1440         if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
1441            !info->attrs[HWSIM_ATTR_FLAGS] ||
1442            !info->attrs[HWSIM_ATTR_COOKIE] ||
1443            !info->attrs[HWSIM_ATTR_TX_INFO])
1444                 goto out;
1445
1446         src = (struct mac_address *)nla_data(
1447                                    info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
1448         hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
1449
1450         ret_skb = (struct sk_buff __user *)
1451                   (unsigned long) nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
1452
1453         data2 = get_hwsim_data_ref_from_addr(src);
1454
1455         if (data2 == NULL)
1456                 goto out;
1457
1458         /* look for the skb matching the cookie passed back from user */
1459         skb_queue_walk_safe(&data2->pending, skb, tmp) {
1460                 if (skb == ret_skb) {
1461                         skb_unlink(skb, &data2->pending);
1462                         found = true;
1463                         break;
1464                 }
1465         }
1466
1467         /* not found */
1468         if (!found)
1469                 goto out;
1470
1471         /* Tx info received because the frame was broadcasted on user space,
1472          so we get all the necessary info: tx attempts and skb control buff */
1473
1474         tx_attempts = (struct hwsim_tx_rate *)nla_data(
1475                        info->attrs[HWSIM_ATTR_TX_INFO]);
1476
1477         /* now send back TX status */
1478         txi = IEEE80211_SKB_CB(skb);
1479
1480         if (txi->control.vif)
1481                 hwsim_check_magic(txi->control.vif);
1482         if (txi->control.sta)
1483                 hwsim_check_sta_magic(txi->control.sta);
1484
1485         ieee80211_tx_info_clear_status(txi);
1486
1487         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
1488                 txi->status.rates[i].idx = tx_attempts[i].idx;
1489                 txi->status.rates[i].count = tx_attempts[i].count;
1490                 /*txi->status.rates[i].flags = 0;*/
1491         }
1492
1493         txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
1494
1495         if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
1496            (hwsim_flags & HWSIM_TX_STAT_ACK)) {
1497                 if (skb->len >= 16) {
1498                         hdr = (struct ieee80211_hdr *) skb->data;
1499                         mac80211_hwsim_monitor_ack(data2->hw, hdr->addr2);
1500                 }
1501         }
1502         ieee80211_tx_status_irqsafe(data2->hw, skb);
1503         return 0;
1504 out:
1505         return -EINVAL;
1506
1507 }
1508
1509 static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
1510                                           struct genl_info *info)
1511 {
1512
1513         struct mac80211_hwsim_data  *data2;
1514         struct ieee80211_rx_status rx_status;
1515         struct mac_address *dst;
1516         int frame_data_len;
1517         char *frame_data;
1518         struct sk_buff *skb = NULL;
1519
1520         if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
1521            !info->attrs[HWSIM_ATTR_FRAME] ||
1522            !info->attrs[HWSIM_ATTR_RX_RATE] ||
1523            !info->attrs[HWSIM_ATTR_SIGNAL])
1524                 goto out;
1525
1526         dst = (struct mac_address *)nla_data(
1527                                    info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
1528
1529         frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
1530         frame_data = (char *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
1531
1532         /* Allocate new skb here */
1533         skb = alloc_skb(frame_data_len, GFP_KERNEL);
1534         if (skb == NULL)
1535                 goto err;
1536
1537         if (frame_data_len <= IEEE80211_MAX_DATA_LEN) {
1538                 /* Copy the data */
1539                 memcpy(skb_put(skb, frame_data_len), frame_data,
1540                        frame_data_len);
1541         } else
1542                 goto err;
1543
1544         data2 = get_hwsim_data_ref_from_addr(dst);
1545
1546         if (data2 == NULL)
1547                 goto out;
1548
1549         /* check if radio is configured properly */
1550
1551         if (data2->idle || !data2->started || !data2->channel)
1552                 goto out;
1553
1554         /*A frame is received from user space*/
1555         memset(&rx_status, 0, sizeof(rx_status));
1556         rx_status.freq = data2->channel->center_freq;
1557         rx_status.band = data2->channel->band;
1558         rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
1559         rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
1560
1561         memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
1562         ieee80211_rx_irqsafe(data2->hw, skb);
1563
1564         return 0;
1565 err:
1566         printk(KERN_DEBUG "mac80211_hwsim: error occured in %s\n", __func__);
1567         goto out;
1568 out:
1569         dev_kfree_skb(skb);
1570         return -EINVAL;
1571 }
1572
1573 static int hwsim_register_received_nl(struct sk_buff *skb_2,
1574                                       struct genl_info *info)
1575 {
1576         if (info == NULL)
1577                 goto out;
1578
1579         wmediumd_pid = info->snd_pid;
1580
1581         printk(KERN_DEBUG "mac80211_hwsim: received a REGISTER, "
1582         "switching to wmediumd mode with pid %d\n", info->snd_pid);
1583
1584         return 0;
1585 out:
1586         printk(KERN_DEBUG "mac80211_hwsim: error occured in %s\n", __func__);
1587         return -EINVAL;
1588 }
1589
1590 /* Generic Netlink operations array */
1591 static struct genl_ops hwsim_ops[] = {
1592         {
1593                 .cmd = HWSIM_CMD_REGISTER,
1594                 .policy = hwsim_genl_policy,
1595                 .doit = hwsim_register_received_nl,
1596                 .flags = GENL_ADMIN_PERM,
1597         },
1598         {
1599                 .cmd = HWSIM_CMD_FRAME,
1600                 .policy = hwsim_genl_policy,
1601                 .doit = hwsim_cloned_frame_received_nl,
1602         },
1603         {
1604                 .cmd = HWSIM_CMD_TX_INFO_FRAME,
1605                 .policy = hwsim_genl_policy,
1606                 .doit = hwsim_tx_info_frame_received_nl,
1607         },
1608 };
1609
1610 static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
1611                                          unsigned long state,
1612                                          void *_notify)
1613 {
1614         struct netlink_notify *notify = _notify;
1615
1616         if (state != NETLINK_URELEASE)
1617                 return NOTIFY_DONE;
1618
1619         if (notify->pid == wmediumd_pid) {
1620                 printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
1621                        " socket, switching to perfect channel medium\n");
1622                 wmediumd_pid = 0;
1623         }
1624         return NOTIFY_DONE;
1625
1626 }
1627
1628 static struct notifier_block hwsim_netlink_notifier = {
1629         .notifier_call = mac80211_hwsim_netlink_notify,
1630 };
1631
1632 static int hwsim_init_netlink(void)
1633 {
1634         int rc;
1635         printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
1636
1637         wmediumd_pid = 0;
1638
1639         rc = genl_register_family_with_ops(&hwsim_genl_family,
1640                 hwsim_ops, ARRAY_SIZE(hwsim_ops));
1641         if (rc)
1642                 goto failure;
1643
1644         rc = netlink_register_notifier(&hwsim_netlink_notifier);
1645         if (rc)
1646                 goto failure;
1647
1648         return 0;
1649
1650 failure:
1651         printk(KERN_DEBUG "mac80211_hwsim: error occured in %s\n", __func__);
1652         return -EINVAL;
1653 }
1654
1655 static void hwsim_exit_netlink(void)
1656 {
1657         int ret;
1658
1659         printk(KERN_INFO "mac80211_hwsim: closing netlink\n");
1660         /* unregister the notifier */
1661         netlink_unregister_notifier(&hwsim_netlink_notifier);
1662         /* unregister the family */
1663         ret = genl_unregister_family(&hwsim_genl_family);
1664         if (ret)
1665                 printk(KERN_DEBUG "mac80211_hwsim: "
1666                        "unregister family %i\n", ret);
1667 }
1668
1669 static int __init init_mac80211_hwsim(void)
1670 {
1671         int i, err = 0;
1672         u8 addr[ETH_ALEN];
1673         struct mac80211_hwsim_data *data;
1674         struct ieee80211_hw *hw;
1675         enum ieee80211_band band;
1676
1677         if (radios < 1 || radios > 100)
1678                 return -EINVAL;
1679
1680         if (fake_hw_scan) {
1681                 mac80211_hwsim_ops.hw_scan = mac80211_hwsim_hw_scan;
1682                 mac80211_hwsim_ops.sw_scan_start = NULL;
1683                 mac80211_hwsim_ops.sw_scan_complete = NULL;
1684         }
1685
1686         spin_lock_init(&hwsim_radio_lock);
1687         INIT_LIST_HEAD(&hwsim_radios);
1688
1689         hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
1690         if (IS_ERR(hwsim_class))
1691                 return PTR_ERR(hwsim_class);
1692
1693         memset(addr, 0, ETH_ALEN);
1694         addr[0] = 0x02;
1695
1696         for (i = 0; i < radios; i++) {
1697                 printk(KERN_DEBUG "mac80211_hwsim: Initializing radio %d\n",
1698                        i);
1699                 hw = ieee80211_alloc_hw(sizeof(*data), &mac80211_hwsim_ops);
1700                 if (!hw) {
1701                         printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw "
1702                                "failed\n");
1703                         err = -ENOMEM;
1704                         goto failed;
1705                 }
1706                 data = hw->priv;
1707                 data->hw = hw;
1708
1709                 data->dev = device_create(hwsim_class, NULL, 0, hw,
1710                                           "hwsim%d", i);
1711                 if (IS_ERR(data->dev)) {
1712                         printk(KERN_DEBUG
1713                                "mac80211_hwsim: device_create "
1714                                "failed (%ld)\n", PTR_ERR(data->dev));
1715                         err = -ENOMEM;
1716                         goto failed_drvdata;
1717                 }
1718                 data->dev->driver = &mac80211_hwsim_driver;
1719                 skb_queue_head_init(&data->pending);
1720
1721                 SET_IEEE80211_DEV(hw, data->dev);
1722                 addr[3] = i >> 8;
1723                 addr[4] = i;
1724                 memcpy(data->addresses[0].addr, addr, ETH_ALEN);
1725                 memcpy(data->addresses[1].addr, addr, ETH_ALEN);
1726                 data->addresses[1].addr[0] |= 0x40;
1727                 hw->wiphy->n_addresses = 2;
1728                 hw->wiphy->addresses = data->addresses;
1729
1730                 if (fake_hw_scan) {
1731                         hw->wiphy->max_scan_ssids = 255;
1732                         hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
1733                 }
1734
1735                 hw->channel_change_time = 1;
1736                 hw->queues = 4;
1737                 hw->wiphy->interface_modes =
1738                         BIT(NL80211_IFTYPE_STATION) |
1739                         BIT(NL80211_IFTYPE_AP) |
1740                         BIT(NL80211_IFTYPE_P2P_CLIENT) |
1741                         BIT(NL80211_IFTYPE_P2P_GO) |
1742                         BIT(NL80211_IFTYPE_ADHOC) |
1743                         BIT(NL80211_IFTYPE_MESH_POINT);
1744
1745                 hw->flags = IEEE80211_HW_MFP_CAPABLE |
1746                             IEEE80211_HW_SIGNAL_DBM |
1747                             IEEE80211_HW_SUPPORTS_STATIC_SMPS |
1748                             IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
1749                             IEEE80211_HW_AMPDU_AGGREGATION;
1750
1751                 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS;
1752
1753                 /* ask mac80211 to reserve space for magic */
1754                 hw->vif_data_size = sizeof(struct hwsim_vif_priv);
1755                 hw->sta_data_size = sizeof(struct hwsim_sta_priv);
1756
1757                 memcpy(data->channels_2ghz, hwsim_channels_2ghz,
1758                         sizeof(hwsim_channels_2ghz));
1759                 memcpy(data->channels_5ghz, hwsim_channels_5ghz,
1760                         sizeof(hwsim_channels_5ghz));
1761                 memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
1762
1763                 for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) {
1764                         struct ieee80211_supported_band *sband = &data->bands[band];
1765                         switch (band) {
1766                         case IEEE80211_BAND_2GHZ:
1767                                 sband->channels = data->channels_2ghz;
1768                                 sband->n_channels =
1769                                         ARRAY_SIZE(hwsim_channels_2ghz);
1770                                 sband->bitrates = data->rates;
1771                                 sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
1772                                 break;
1773                         case IEEE80211_BAND_5GHZ:
1774                                 sband->channels = data->channels_5ghz;
1775                                 sband->n_channels =
1776                                         ARRAY_SIZE(hwsim_channels_5ghz);
1777                                 sband->bitrates = data->rates + 4;
1778                                 sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
1779                                 break;
1780                         default:
1781                                 break;
1782                         }
1783
1784                         sband->ht_cap.ht_supported = true;
1785                         sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
1786                                 IEEE80211_HT_CAP_GRN_FLD |
1787                                 IEEE80211_HT_CAP_SGI_40 |
1788                                 IEEE80211_HT_CAP_DSSSCCK40;
1789                         sband->ht_cap.ampdu_factor = 0x3;
1790                         sband->ht_cap.ampdu_density = 0x6;
1791                         memset(&sband->ht_cap.mcs, 0,
1792                                sizeof(sband->ht_cap.mcs));
1793                         sband->ht_cap.mcs.rx_mask[0] = 0xff;
1794                         sband->ht_cap.mcs.rx_mask[1] = 0xff;
1795                         sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
1796
1797                         hw->wiphy->bands[band] = sband;
1798                 }
1799                 /* By default all radios are belonging to the first group */
1800                 data->group = 1;
1801                 mutex_init(&data->mutex);
1802
1803                 /* Enable frame retransmissions for lossy channels */
1804                 hw->max_rates = 4;
1805                 hw->max_rate_tries = 11;
1806
1807                 /* Work to be done prior to ieee80211_register_hw() */
1808                 switch (regtest) {
1809                 case HWSIM_REGTEST_DISABLED:
1810                 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
1811                 case HWSIM_REGTEST_DRIVER_REG_ALL:
1812                 case HWSIM_REGTEST_DIFF_COUNTRY:
1813                         /*
1814                          * Nothing to be done for driver regulatory domain
1815                          * hints prior to ieee80211_register_hw()
1816                          */
1817                         break;
1818                 case HWSIM_REGTEST_WORLD_ROAM:
1819                         if (i == 0) {
1820                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1821                                 wiphy_apply_custom_regulatory(hw->wiphy,
1822                                         &hwsim_world_regdom_custom_01);
1823                         }
1824                         break;
1825                 case HWSIM_REGTEST_CUSTOM_WORLD:
1826                         hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1827                         wiphy_apply_custom_regulatory(hw->wiphy,
1828                                 &hwsim_world_regdom_custom_01);
1829                         break;
1830                 case HWSIM_REGTEST_CUSTOM_WORLD_2:
1831                         if (i == 0) {
1832                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1833                                 wiphy_apply_custom_regulatory(hw->wiphy,
1834                                         &hwsim_world_regdom_custom_01);
1835                         } else if (i == 1) {
1836                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1837                                 wiphy_apply_custom_regulatory(hw->wiphy,
1838                                         &hwsim_world_regdom_custom_02);
1839                         }
1840                         break;
1841                 case HWSIM_REGTEST_STRICT_ALL:
1842                         hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1843                         break;
1844                 case HWSIM_REGTEST_STRICT_FOLLOW:
1845                 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
1846                         if (i == 0)
1847                                 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1848                         break;
1849                 case HWSIM_REGTEST_ALL:
1850                         if (i == 0) {
1851                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1852                                 wiphy_apply_custom_regulatory(hw->wiphy,
1853                                         &hwsim_world_regdom_custom_01);
1854                         } else if (i == 1) {
1855                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1856                                 wiphy_apply_custom_regulatory(hw->wiphy,
1857                                         &hwsim_world_regdom_custom_02);
1858                         } else if (i == 4)
1859                                 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1860                         break;
1861                 default:
1862                         break;
1863                 }
1864
1865                 /* give the regulatory workqueue a chance to run */
1866                 if (regtest)
1867                         schedule_timeout_interruptible(1);
1868                 err = ieee80211_register_hw(hw);
1869                 if (err < 0) {
1870                         printk(KERN_DEBUG "mac80211_hwsim: "
1871                                "ieee80211_register_hw failed (%d)\n", err);
1872                         goto failed_hw;
1873                 }
1874
1875                 /* Work to be done after to ieee80211_register_hw() */
1876                 switch (regtest) {
1877                 case HWSIM_REGTEST_WORLD_ROAM:
1878                 case HWSIM_REGTEST_DISABLED:
1879                         break;
1880                 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
1881                         if (!i)
1882                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1883                         break;
1884                 case HWSIM_REGTEST_DRIVER_REG_ALL:
1885                 case HWSIM_REGTEST_STRICT_ALL:
1886                         regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1887                         break;
1888                 case HWSIM_REGTEST_DIFF_COUNTRY:
1889                         if (i < ARRAY_SIZE(hwsim_alpha2s))
1890                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[i]);
1891                         break;
1892                 case HWSIM_REGTEST_CUSTOM_WORLD:
1893                 case HWSIM_REGTEST_CUSTOM_WORLD_2:
1894                         /*
1895                          * Nothing to be done for custom world regulatory
1896                          * domains after to ieee80211_register_hw
1897                          */
1898                         break;
1899                 case HWSIM_REGTEST_STRICT_FOLLOW:
1900                         if (i == 0)
1901                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1902                         break;
1903                 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
1904                         if (i == 0)
1905                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1906                         else if (i == 1)
1907                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
1908                         break;
1909                 case HWSIM_REGTEST_ALL:
1910                         if (i == 2)
1911                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1912                         else if (i == 3)
1913                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
1914                         else if (i == 4)
1915                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[2]);
1916                         break;
1917                 default:
1918                         break;
1919                 }
1920
1921                 wiphy_debug(hw->wiphy, "hwaddr %pm registered\n",
1922                             hw->wiphy->perm_addr);
1923
1924                 data->debugfs = debugfs_create_dir("hwsim",
1925                                                    hw->wiphy->debugfsdir);
1926                 data->debugfs_ps = debugfs_create_file("ps", 0666,
1927                                                        data->debugfs, data,
1928                                                        &hwsim_fops_ps);
1929                 data->debugfs_group = debugfs_create_file("group", 0666,
1930                                                         data->debugfs, data,
1931                                                         &hwsim_fops_group);
1932
1933                 setup_timer(&data->beacon_timer, mac80211_hwsim_beacon,
1934                             (unsigned long) hw);
1935
1936                 list_add_tail(&data->list, &hwsim_radios);
1937         }
1938
1939         hwsim_mon = alloc_netdev(0, "hwsim%d", hwsim_mon_setup);
1940         if (hwsim_mon == NULL)
1941                 goto failed;
1942
1943         rtnl_lock();
1944
1945         err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
1946         if (err < 0)
1947                 goto failed_mon;
1948
1949
1950         err = register_netdevice(hwsim_mon);
1951         if (err < 0)
1952                 goto failed_mon;
1953
1954         rtnl_unlock();
1955
1956         err = hwsim_init_netlink();
1957         if (err < 0)
1958                 goto failed_nl;
1959
1960         return 0;
1961
1962 failed_nl:
1963         printk(KERN_DEBUG "mac_80211_hwsim: failed initializing netlink\n");
1964         return err;
1965
1966 failed_mon:
1967         rtnl_unlock();
1968         free_netdev(hwsim_mon);
1969         mac80211_hwsim_free();
1970         return err;
1971
1972 failed_hw:
1973         device_unregister(data->dev);
1974 failed_drvdata:
1975         ieee80211_free_hw(hw);
1976 failed:
1977         mac80211_hwsim_free();
1978         return err;
1979 }
1980
1981
1982 static void __exit exit_mac80211_hwsim(void)
1983 {
1984         printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
1985
1986         hwsim_exit_netlink();
1987
1988         mac80211_hwsim_free();
1989         unregister_netdev(hwsim_mon);
1990 }
1991
1992
1993 module_init(init_mac80211_hwsim);
1994 module_exit(exit_mac80211_hwsim);