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