Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wirel...
[linux-3.10.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 <linux/ktime.h>
31 #include <net/genetlink.h>
32 #include "mac80211_hwsim.h"
33
34 #define WARN_QUEUE 100
35 #define MAX_QUEUE 200
36
37 MODULE_AUTHOR("Jouni Malinen");
38 MODULE_DESCRIPTION("Software simulator of 802.11 radio(s) for mac80211");
39 MODULE_LICENSE("GPL");
40
41 static u32 wmediumd_pid;
42
43 static int radios = 2;
44 module_param(radios, int, 0444);
45 MODULE_PARM_DESC(radios, "Number of simulated radios");
46
47 static bool fake_hw_scan;
48 module_param(fake_hw_scan, bool, 0444);
49 MODULE_PARM_DESC(fake_hw_scan, "Install fake (no-op) hw-scan handler");
50
51 /**
52  * enum hwsim_regtest - the type of regulatory tests we offer
53  *
54  * These are the different values you can use for the regtest
55  * module parameter. This is useful to help test world roaming
56  * and the driver regulatory_hint() call and combinations of these.
57  * If you want to do specific alpha2 regulatory domain tests simply
58  * use the userspace regulatory request as that will be respected as
59  * well without the need of this module parameter. This is designed
60  * only for testing the driver regulatory request, world roaming
61  * and all possible combinations.
62  *
63  * @HWSIM_REGTEST_DISABLED: No regulatory tests are performed,
64  *      this is the default value.
65  * @HWSIM_REGTEST_DRIVER_REG_FOLLOW: Used for testing the driver regulatory
66  *      hint, only one driver regulatory hint will be sent as such the
67  *      secondary radios are expected to follow.
68  * @HWSIM_REGTEST_DRIVER_REG_ALL: Used for testing the driver regulatory
69  *      request with all radios reporting the same regulatory domain.
70  * @HWSIM_REGTEST_DIFF_COUNTRY: Used for testing the drivers calling
71  *      different regulatory domains requests. Expected behaviour is for
72  *      an intersection to occur but each device will still use their
73  *      respective regulatory requested domains. Subsequent radios will
74  *      use the resulting intersection.
75  * @HWSIM_REGTEST_WORLD_ROAM: Used for testing the world roaming. We accomplish
76  *      this by using a custom beacon-capable regulatory domain for the first
77  *      radio. All other device world roam.
78  * @HWSIM_REGTEST_CUSTOM_WORLD: Used for testing the custom world regulatory
79  *      domain requests. All radios will adhere to this custom world regulatory
80  *      domain.
81  * @HWSIM_REGTEST_CUSTOM_WORLD_2: Used for testing 2 custom world regulatory
82  *      domain requests. The first radio will adhere to the first custom world
83  *      regulatory domain, the second one to the second custom world regulatory
84  *      domain. All other devices will world roam.
85  * @HWSIM_REGTEST_STRICT_FOLLOW_: Used for testing strict regulatory domain
86  *      settings, only the first radio will send a regulatory domain request
87  *      and use strict settings. The rest of the radios are expected to follow.
88  * @HWSIM_REGTEST_STRICT_ALL: Used for testing strict regulatory domain
89  *      settings. All radios will adhere to this.
90  * @HWSIM_REGTEST_STRICT_AND_DRIVER_REG: Used for testing strict regulatory
91  *      domain settings, combined with secondary driver regulatory domain
92  *      settings. The first radio will get a strict regulatory domain setting
93  *      using the first driver regulatory request and the second radio will use
94  *      non-strict settings using the second driver regulatory request. All
95  *      other devices should follow the intersection created between the
96  *      first two.
97  * @HWSIM_REGTEST_ALL: Used for testing every possible mix. You will need
98  *      at least 6 radios for a complete test. We will test in this order:
99  *      1 - driver custom world regulatory domain
100  *      2 - second custom world regulatory domain
101  *      3 - first driver regulatory domain request
102  *      4 - second driver regulatory domain request
103  *      5 - strict regulatory domain settings using the third driver regulatory
104  *          domain request
105  *      6 and on - should follow the intersection of the 3rd, 4rth and 5th radio
106  *                 regulatory requests.
107  */
108 enum hwsim_regtest {
109         HWSIM_REGTEST_DISABLED = 0,
110         HWSIM_REGTEST_DRIVER_REG_FOLLOW = 1,
111         HWSIM_REGTEST_DRIVER_REG_ALL = 2,
112         HWSIM_REGTEST_DIFF_COUNTRY = 3,
113         HWSIM_REGTEST_WORLD_ROAM = 4,
114         HWSIM_REGTEST_CUSTOM_WORLD = 5,
115         HWSIM_REGTEST_CUSTOM_WORLD_2 = 6,
116         HWSIM_REGTEST_STRICT_FOLLOW = 7,
117         HWSIM_REGTEST_STRICT_ALL = 8,
118         HWSIM_REGTEST_STRICT_AND_DRIVER_REG = 9,
119         HWSIM_REGTEST_ALL = 10,
120 };
121
122 /* Set to one of the HWSIM_REGTEST_* values above */
123 static int regtest = HWSIM_REGTEST_DISABLED;
124 module_param(regtest, int, 0444);
125 MODULE_PARM_DESC(regtest, "The type of regulatory test we want to run");
126
127 static const char *hwsim_alpha2s[] = {
128         "FI",
129         "AL",
130         "US",
131         "DE",
132         "JP",
133         "AL",
134 };
135
136 static const struct ieee80211_regdomain hwsim_world_regdom_custom_01 = {
137         .n_reg_rules = 4,
138         .alpha2 =  "99",
139         .reg_rules = {
140                 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
141                 REG_RULE(2484-10, 2484+10, 40, 0, 20, 0),
142                 REG_RULE(5150-10, 5240+10, 40, 0, 30, 0),
143                 REG_RULE(5745-10, 5825+10, 40, 0, 30, 0),
144         }
145 };
146
147 static const struct ieee80211_regdomain hwsim_world_regdom_custom_02 = {
148         .n_reg_rules = 2,
149         .alpha2 =  "99",
150         .reg_rules = {
151                 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
152                 REG_RULE(5725-10, 5850+10, 40, 0, 30,
153                         NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS),
154         }
155 };
156
157 struct hwsim_vif_priv {
158         u32 magic;
159         u8 bssid[ETH_ALEN];
160         bool assoc;
161         u16 aid;
162 };
163
164 #define HWSIM_VIF_MAGIC 0x69537748
165
166 static inline void hwsim_check_magic(struct ieee80211_vif *vif)
167 {
168         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
169         WARN_ON(vp->magic != HWSIM_VIF_MAGIC);
170 }
171
172 static inline void hwsim_set_magic(struct ieee80211_vif *vif)
173 {
174         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
175         vp->magic = HWSIM_VIF_MAGIC;
176 }
177
178 static inline void hwsim_clear_magic(struct ieee80211_vif *vif)
179 {
180         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
181         vp->magic = 0;
182 }
183
184 struct hwsim_sta_priv {
185         u32 magic;
186 };
187
188 #define HWSIM_STA_MAGIC 0x6d537748
189
190 static inline void hwsim_check_sta_magic(struct ieee80211_sta *sta)
191 {
192         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
193         WARN_ON(sp->magic != HWSIM_STA_MAGIC);
194 }
195
196 static inline void hwsim_set_sta_magic(struct ieee80211_sta *sta)
197 {
198         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
199         sp->magic = HWSIM_STA_MAGIC;
200 }
201
202 static inline void hwsim_clear_sta_magic(struct ieee80211_sta *sta)
203 {
204         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
205         sp->magic = 0;
206 }
207
208 static struct class *hwsim_class;
209
210 static struct net_device *hwsim_mon; /* global monitor netdev */
211
212 #define CHAN2G(_freq)  { \
213         .band = IEEE80211_BAND_2GHZ, \
214         .center_freq = (_freq), \
215         .hw_value = (_freq), \
216         .max_power = 20, \
217 }
218
219 #define CHAN5G(_freq) { \
220         .band = IEEE80211_BAND_5GHZ, \
221         .center_freq = (_freq), \
222         .hw_value = (_freq), \
223         .max_power = 20, \
224 }
225
226 static const struct ieee80211_channel hwsim_channels_2ghz[] = {
227         CHAN2G(2412), /* Channel 1 */
228         CHAN2G(2417), /* Channel 2 */
229         CHAN2G(2422), /* Channel 3 */
230         CHAN2G(2427), /* Channel 4 */
231         CHAN2G(2432), /* Channel 5 */
232         CHAN2G(2437), /* Channel 6 */
233         CHAN2G(2442), /* Channel 7 */
234         CHAN2G(2447), /* Channel 8 */
235         CHAN2G(2452), /* Channel 9 */
236         CHAN2G(2457), /* Channel 10 */
237         CHAN2G(2462), /* Channel 11 */
238         CHAN2G(2467), /* Channel 12 */
239         CHAN2G(2472), /* Channel 13 */
240         CHAN2G(2484), /* Channel 14 */
241 };
242
243 static const struct ieee80211_channel hwsim_channels_5ghz[] = {
244         CHAN5G(5180), /* Channel 36 */
245         CHAN5G(5200), /* Channel 40 */
246         CHAN5G(5220), /* Channel 44 */
247         CHAN5G(5240), /* Channel 48 */
248
249         CHAN5G(5260), /* Channel 52 */
250         CHAN5G(5280), /* Channel 56 */
251         CHAN5G(5300), /* Channel 60 */
252         CHAN5G(5320), /* Channel 64 */
253
254         CHAN5G(5500), /* Channel 100 */
255         CHAN5G(5520), /* Channel 104 */
256         CHAN5G(5540), /* Channel 108 */
257         CHAN5G(5560), /* Channel 112 */
258         CHAN5G(5580), /* Channel 116 */
259         CHAN5G(5600), /* Channel 120 */
260         CHAN5G(5620), /* Channel 124 */
261         CHAN5G(5640), /* Channel 128 */
262         CHAN5G(5660), /* Channel 132 */
263         CHAN5G(5680), /* Channel 136 */
264         CHAN5G(5700), /* Channel 140 */
265
266         CHAN5G(5745), /* Channel 149 */
267         CHAN5G(5765), /* Channel 153 */
268         CHAN5G(5785), /* Channel 157 */
269         CHAN5G(5805), /* Channel 161 */
270         CHAN5G(5825), /* Channel 165 */
271 };
272
273 static const struct ieee80211_rate hwsim_rates[] = {
274         { .bitrate = 10 },
275         { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
276         { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
277         { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
278         { .bitrate = 60 },
279         { .bitrate = 90 },
280         { .bitrate = 120 },
281         { .bitrate = 180 },
282         { .bitrate = 240 },
283         { .bitrate = 360 },
284         { .bitrate = 480 },
285         { .bitrate = 540 }
286 };
287
288 static spinlock_t hwsim_radio_lock;
289 static struct list_head hwsim_radios;
290
291 struct mac80211_hwsim_data {
292         struct list_head list;
293         struct ieee80211_hw *hw;
294         struct device *dev;
295         struct ieee80211_supported_band bands[IEEE80211_NUM_BANDS];
296         struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)];
297         struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)];
298         struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
299
300         struct mac_address addresses[2];
301
302         struct ieee80211_channel *channel;
303         unsigned long beacon_int; /* in jiffies unit */
304         unsigned int rx_filter;
305         bool started, idle, scanning;
306         struct mutex mutex;
307         struct timer_list beacon_timer;
308         enum ps_mode {
309                 PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
310         } ps;
311         bool ps_poll_pending;
312         struct dentry *debugfs;
313         struct dentry *debugfs_ps;
314
315         struct sk_buff_head pending;    /* packets pending */
316         /*
317          * Only radios in the same group can communicate together (the
318          * channel has to match too). Each bit represents a group. A
319          * radio can be in more then one group.
320          */
321         u64 group;
322         struct dentry *debugfs_group;
323
324         int power_level;
325
326         /* difference between this hw's clock and the real clock, in usecs */
327         u64 tsf_offset;
328 };
329
330
331 struct hwsim_radiotap_hdr {
332         struct ieee80211_radiotap_header hdr;
333         __le64 rt_tsft;
334         u8 rt_flags;
335         u8 rt_rate;
336         __le16 rt_channel;
337         __le16 rt_chbitmask;
338 } __packed;
339
340 /* MAC80211_HWSIM netlinf family */
341 static struct genl_family hwsim_genl_family = {
342         .id = GENL_ID_GENERATE,
343         .hdrsize = 0,
344         .name = "MAC80211_HWSIM",
345         .version = 1,
346         .maxattr = HWSIM_ATTR_MAX,
347 };
348
349 /* MAC80211_HWSIM netlink policy */
350
351 static struct nla_policy hwsim_genl_policy[HWSIM_ATTR_MAX + 1] = {
352         [HWSIM_ATTR_ADDR_RECEIVER] = { .type = NLA_UNSPEC,
353                                        .len = 6*sizeof(u8) },
354         [HWSIM_ATTR_ADDR_TRANSMITTER] = { .type = NLA_UNSPEC,
355                                           .len = 6*sizeof(u8) },
356         [HWSIM_ATTR_FRAME] = { .type = NLA_BINARY,
357                                .len = IEEE80211_MAX_DATA_LEN },
358         [HWSIM_ATTR_FLAGS] = { .type = NLA_U32 },
359         [HWSIM_ATTR_RX_RATE] = { .type = NLA_U32 },
360         [HWSIM_ATTR_SIGNAL] = { .type = NLA_U32 },
361         [HWSIM_ATTR_TX_INFO] = { .type = NLA_UNSPEC,
362                                  .len = IEEE80211_TX_MAX_RATES*sizeof(
363                                         struct hwsim_tx_rate)},
364         [HWSIM_ATTR_COOKIE] = { .type = NLA_U64 },
365 };
366
367 static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
368                                         struct net_device *dev)
369 {
370         /* TODO: allow packet injection */
371         dev_kfree_skb(skb);
372         return NETDEV_TX_OK;
373 }
374
375 static __le64 __mac80211_hwsim_get_tsf(struct mac80211_hwsim_data *data)
376 {
377         struct timeval tv = ktime_to_timeval(ktime_get_real());
378         u64 now = tv.tv_sec * USEC_PER_SEC + tv.tv_usec;
379         return cpu_to_le64(now + data->tsf_offset);
380 }
381
382 static u64 mac80211_hwsim_get_tsf(struct ieee80211_hw *hw,
383                 struct ieee80211_vif *vif)
384 {
385         struct mac80211_hwsim_data *data = hw->priv;
386         return le64_to_cpu(__mac80211_hwsim_get_tsf(data));
387 }
388
389 static void mac80211_hwsim_set_tsf(struct ieee80211_hw *hw,
390                 struct ieee80211_vif *vif, u64 tsf)
391 {
392         struct mac80211_hwsim_data *data = hw->priv;
393         struct timeval tv = ktime_to_timeval(ktime_get_real());
394         u64 now = tv.tv_sec * USEC_PER_SEC + tv.tv_usec;
395         data->tsf_offset = tsf - now;
396 }
397
398 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
399                                       struct sk_buff *tx_skb)
400 {
401         struct mac80211_hwsim_data *data = hw->priv;
402         struct sk_buff *skb;
403         struct hwsim_radiotap_hdr *hdr;
404         u16 flags;
405         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
406         struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
407
408         if (!netif_running(hwsim_mon))
409                 return;
410
411         skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
412         if (skb == NULL)
413                 return;
414
415         hdr = (struct hwsim_radiotap_hdr *) skb_push(skb, sizeof(*hdr));
416         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
417         hdr->hdr.it_pad = 0;
418         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
419         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
420                                           (1 << IEEE80211_RADIOTAP_RATE) |
421                                           (1 << IEEE80211_RADIOTAP_TSFT) |
422                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
423         hdr->rt_tsft = __mac80211_hwsim_get_tsf(data);
424         hdr->rt_flags = 0;
425         hdr->rt_rate = txrate->bitrate / 5;
426         hdr->rt_channel = cpu_to_le16(data->channel->center_freq);
427         flags = IEEE80211_CHAN_2GHZ;
428         if (txrate->flags & IEEE80211_RATE_ERP_G)
429                 flags |= IEEE80211_CHAN_OFDM;
430         else
431                 flags |= IEEE80211_CHAN_CCK;
432         hdr->rt_chbitmask = cpu_to_le16(flags);
433
434         skb->dev = hwsim_mon;
435         skb_set_mac_header(skb, 0);
436         skb->ip_summed = CHECKSUM_UNNECESSARY;
437         skb->pkt_type = PACKET_OTHERHOST;
438         skb->protocol = htons(ETH_P_802_2);
439         memset(skb->cb, 0, sizeof(skb->cb));
440         netif_rx(skb);
441 }
442
443
444 static void mac80211_hwsim_monitor_ack(struct ieee80211_hw *hw, const u8 *addr)
445 {
446         struct mac80211_hwsim_data *data = hw->priv;
447         struct sk_buff *skb;
448         struct hwsim_radiotap_hdr *hdr;
449         u16 flags;
450         struct ieee80211_hdr *hdr11;
451
452         if (!netif_running(hwsim_mon))
453                 return;
454
455         skb = dev_alloc_skb(100);
456         if (skb == NULL)
457                 return;
458
459         hdr = (struct hwsim_radiotap_hdr *) skb_put(skb, sizeof(*hdr));
460         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
461         hdr->hdr.it_pad = 0;
462         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
463         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
464                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
465         hdr->rt_flags = 0;
466         hdr->rt_rate = 0;
467         hdr->rt_channel = cpu_to_le16(data->channel->center_freq);
468         flags = IEEE80211_CHAN_2GHZ;
469         hdr->rt_chbitmask = cpu_to_le16(flags);
470
471         hdr11 = (struct ieee80211_hdr *) skb_put(skb, 10);
472         hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
473                                            IEEE80211_STYPE_ACK);
474         hdr11->duration_id = cpu_to_le16(0);
475         memcpy(hdr11->addr1, addr, ETH_ALEN);
476
477         skb->dev = hwsim_mon;
478         skb_set_mac_header(skb, 0);
479         skb->ip_summed = CHECKSUM_UNNECESSARY;
480         skb->pkt_type = PACKET_OTHERHOST;
481         skb->protocol = htons(ETH_P_802_2);
482         memset(skb->cb, 0, sizeof(skb->cb));
483         netif_rx(skb);
484 }
485
486
487 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
488                            struct sk_buff *skb)
489 {
490         switch (data->ps) {
491         case PS_DISABLED:
492                 return true;
493         case PS_ENABLED:
494                 return false;
495         case PS_AUTO_POLL:
496                 /* TODO: accept (some) Beacons by default and other frames only
497                  * if pending PS-Poll has been sent */
498                 return true;
499         case PS_MANUAL_POLL:
500                 /* Allow unicast frames to own address if there is a pending
501                  * PS-Poll */
502                 if (data->ps_poll_pending &&
503                     memcmp(data->hw->wiphy->perm_addr, skb->data + 4,
504                            ETH_ALEN) == 0) {
505                         data->ps_poll_pending = false;
506                         return true;
507                 }
508                 return false;
509         }
510
511         return true;
512 }
513
514
515 struct mac80211_hwsim_addr_match_data {
516         bool ret;
517         const u8 *addr;
518 };
519
520 static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
521                                      struct ieee80211_vif *vif)
522 {
523         struct mac80211_hwsim_addr_match_data *md = data;
524         if (memcmp(mac, md->addr, ETH_ALEN) == 0)
525                 md->ret = true;
526 }
527
528
529 static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
530                                       const u8 *addr)
531 {
532         struct mac80211_hwsim_addr_match_data md;
533
534         if (memcmp(addr, data->hw->wiphy->perm_addr, ETH_ALEN) == 0)
535                 return true;
536
537         md.ret = false;
538         md.addr = addr;
539         ieee80211_iterate_active_interfaces_atomic(data->hw,
540                                                    mac80211_hwsim_addr_iter,
541                                                    &md);
542
543         return md.ret;
544 }
545
546 static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
547                                        struct sk_buff *my_skb,
548                                        int dst_pid)
549 {
550         struct sk_buff *skb;
551         struct mac80211_hwsim_data *data = hw->priv;
552         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) my_skb->data;
553         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(my_skb);
554         void *msg_head;
555         unsigned int hwsim_flags = 0;
556         int i;
557         struct hwsim_tx_rate tx_attempts[IEEE80211_TX_MAX_RATES];
558
559         if (data->idle) {
560                 wiphy_debug(hw->wiphy, "Trying to TX when idle - reject\n");
561                 dev_kfree_skb(my_skb);
562                 return;
563         }
564
565         if (data->ps != PS_DISABLED)
566                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
567         /* If the queue contains MAX_QUEUE skb's drop some */
568         if (skb_queue_len(&data->pending) >= MAX_QUEUE) {
569                 /* Droping until WARN_QUEUE level */
570                 while (skb_queue_len(&data->pending) >= WARN_QUEUE)
571                         skb_dequeue(&data->pending);
572         }
573
574         skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_ATOMIC);
575         if (skb == NULL)
576                 goto nla_put_failure;
577
578         msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
579                                HWSIM_CMD_FRAME);
580         if (msg_head == NULL) {
581                 printk(KERN_DEBUG "mac80211_hwsim: problem with msg_head\n");
582                 goto nla_put_failure;
583         }
584
585         if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
586                     sizeof(struct mac_address), data->addresses[1].addr))
587                 goto nla_put_failure;
588
589         /* We get the skb->data */
590         if (nla_put(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data))
591                 goto nla_put_failure;
592
593         /* We get the flags for this transmission, and we translate them to
594            wmediumd flags  */
595
596         if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
597                 hwsim_flags |= HWSIM_TX_CTL_REQ_TX_STATUS;
598
599         if (info->flags & IEEE80211_TX_CTL_NO_ACK)
600                 hwsim_flags |= HWSIM_TX_CTL_NO_ACK;
601
602         if (nla_put_u32(skb, HWSIM_ATTR_FLAGS, hwsim_flags))
603                 goto nla_put_failure;
604
605         /* We get the tx control (rate and retries) info*/
606
607         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
608                 tx_attempts[i].idx = info->status.rates[i].idx;
609                 tx_attempts[i].count = info->status.rates[i].count;
610         }
611
612         if (nla_put(skb, HWSIM_ATTR_TX_INFO,
613                     sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
614                     tx_attempts))
615                 goto nla_put_failure;
616
617         /* We create a cookie to identify this skb */
618         if (nla_put_u64(skb, HWSIM_ATTR_COOKIE, (unsigned long) my_skb))
619                 goto nla_put_failure;
620
621         genlmsg_end(skb, msg_head);
622         genlmsg_unicast(&init_net, skb, dst_pid);
623
624         /* Enqueue the packet */
625         skb_queue_tail(&data->pending, my_skb);
626         return;
627
628 nla_put_failure:
629         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
630 }
631
632 static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
633                                           struct sk_buff *skb)
634 {
635         struct mac80211_hwsim_data *data = hw->priv, *data2;
636         bool ack = false;
637         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
638         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
639         struct ieee80211_rx_status rx_status;
640         struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
641
642         if (data->idle) {
643                 wiphy_debug(hw->wiphy, "Trying to TX when idle - reject\n");
644                 return false;
645         }
646
647         memset(&rx_status, 0, sizeof(rx_status));
648         rx_status.flag |= RX_FLAG_MACTIME_MPDU;
649         rx_status.freq = data->channel->center_freq;
650         rx_status.band = data->channel->band;
651         rx_status.rate_idx = info->control.rates[0].idx;
652         if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
653                 rx_status.flag |= RX_FLAG_HT;
654         if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
655                 rx_status.flag |= RX_FLAG_40MHZ;
656         if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
657                 rx_status.flag |= RX_FLAG_SHORT_GI;
658         /* TODO: simulate real signal strength (and optional packet loss) */
659         rx_status.signal = data->power_level - 50;
660
661         if (data->ps != PS_DISABLED)
662                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
663
664         /* release the skb's source info */
665         skb_orphan(skb);
666         skb_dst_drop(skb);
667         skb->mark = 0;
668         secpath_reset(skb);
669         nf_reset(skb);
670
671         /* Copy skb to all enabled radios that are on the current frequency */
672         spin_lock(&hwsim_radio_lock);
673         list_for_each_entry(data2, &hwsim_radios, list) {
674                 struct sk_buff *nskb;
675                 struct ieee80211_mgmt *mgmt;
676
677                 if (data == data2)
678                         continue;
679
680                 if (data2->idle || !data2->started ||
681                     !hwsim_ps_rx_ok(data2, skb) || !data2->channel ||
682                     data->channel->center_freq != data2->channel->center_freq ||
683                     !(data->group & data2->group))
684                         continue;
685
686                 nskb = skb_copy(skb, GFP_ATOMIC);
687                 if (nskb == NULL)
688                         continue;
689
690                 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
691                         ack = true;
692
693                 /* set bcn timestamp relative to receiver mactime */
694                 rx_status.mactime =
695                                 le64_to_cpu(__mac80211_hwsim_get_tsf(data2));
696                 mgmt = (struct ieee80211_mgmt *) nskb->data;
697                 if (ieee80211_is_beacon(mgmt->frame_control) ||
698                     ieee80211_is_probe_resp(mgmt->frame_control))
699                         mgmt->u.beacon.timestamp = cpu_to_le64(
700                                 rx_status.mactime +
701                                 (data->tsf_offset - data2->tsf_offset) +
702                                 24 * 8 * 10 / txrate->bitrate);
703
704                 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
705                 ieee80211_rx_irqsafe(data2->hw, nskb);
706         }
707         spin_unlock(&hwsim_radio_lock);
708
709         return ack;
710 }
711
712 static void mac80211_hwsim_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
713 {
714         bool ack;
715         struct ieee80211_tx_info *txi;
716         u32 _pid;
717
718         mac80211_hwsim_monitor_rx(hw, skb);
719
720         if (skb->len < 10) {
721                 /* Should not happen; just a sanity check for addr1 use */
722                 dev_kfree_skb(skb);
723                 return;
724         }
725
726         /* wmediumd mode check */
727         _pid = ACCESS_ONCE(wmediumd_pid);
728
729         if (_pid)
730                 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
731
732         /* NO wmediumd detected, perfect medium simulation */
733         ack = mac80211_hwsim_tx_frame_no_nl(hw, skb);
734
735         if (ack && skb->len >= 16) {
736                 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
737                 mac80211_hwsim_monitor_ack(hw, hdr->addr2);
738         }
739
740         txi = IEEE80211_SKB_CB(skb);
741
742         if (txi->control.vif)
743                 hwsim_check_magic(txi->control.vif);
744         if (txi->control.sta)
745                 hwsim_check_sta_magic(txi->control.sta);
746
747         ieee80211_tx_info_clear_status(txi);
748
749         /* frame was transmitted at most favorable rate at first attempt */
750         txi->control.rates[0].count = 1;
751         txi->control.rates[1].idx = -1;
752
753         if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
754                 txi->flags |= IEEE80211_TX_STAT_ACK;
755         ieee80211_tx_status_irqsafe(hw, skb);
756 }
757
758
759 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
760 {
761         struct mac80211_hwsim_data *data = hw->priv;
762         wiphy_debug(hw->wiphy, "%s\n", __func__);
763         data->started = true;
764         return 0;
765 }
766
767
768 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
769 {
770         struct mac80211_hwsim_data *data = hw->priv;
771         data->started = false;
772         del_timer(&data->beacon_timer);
773         wiphy_debug(hw->wiphy, "%s\n", __func__);
774 }
775
776
777 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
778                                         struct ieee80211_vif *vif)
779 {
780         wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
781                     __func__, ieee80211_vif_type_p2p(vif),
782                     vif->addr);
783         hwsim_set_magic(vif);
784         return 0;
785 }
786
787
788 static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
789                                            struct ieee80211_vif *vif,
790                                            enum nl80211_iftype newtype,
791                                            bool newp2p)
792 {
793         newtype = ieee80211_iftype_p2p(newtype, newp2p);
794         wiphy_debug(hw->wiphy,
795                     "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
796                     __func__, ieee80211_vif_type_p2p(vif),
797                     newtype, vif->addr);
798         hwsim_check_magic(vif);
799
800         return 0;
801 }
802
803 static void mac80211_hwsim_remove_interface(
804         struct ieee80211_hw *hw, struct ieee80211_vif *vif)
805 {
806         wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
807                     __func__, ieee80211_vif_type_p2p(vif),
808                     vif->addr);
809         hwsim_check_magic(vif);
810         hwsim_clear_magic(vif);
811 }
812
813
814 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
815                                      struct ieee80211_vif *vif)
816 {
817         struct ieee80211_hw *hw = arg;
818         struct sk_buff *skb;
819         struct ieee80211_tx_info *info;
820         u32 _pid;
821
822         hwsim_check_magic(vif);
823
824         if (vif->type != NL80211_IFTYPE_AP &&
825             vif->type != NL80211_IFTYPE_MESH_POINT &&
826             vif->type != NL80211_IFTYPE_ADHOC)
827                 return;
828
829         skb = ieee80211_beacon_get(hw, vif);
830         if (skb == NULL)
831                 return;
832         info = IEEE80211_SKB_CB(skb);
833
834         mac80211_hwsim_monitor_rx(hw, skb);
835
836         /* wmediumd mode check */
837         _pid = ACCESS_ONCE(wmediumd_pid);
838
839         if (_pid)
840                 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
841
842         mac80211_hwsim_tx_frame_no_nl(hw, skb);
843         dev_kfree_skb(skb);
844 }
845
846
847 static void mac80211_hwsim_beacon(unsigned long arg)
848 {
849         struct ieee80211_hw *hw = (struct ieee80211_hw *) arg;
850         struct mac80211_hwsim_data *data = hw->priv;
851
852         if (!data->started)
853                 return;
854
855         ieee80211_iterate_active_interfaces_atomic(
856                 hw, mac80211_hwsim_beacon_tx, hw);
857
858         data->beacon_timer.expires = jiffies + data->beacon_int;
859         add_timer(&data->beacon_timer);
860 }
861
862 static const char *hwsim_chantypes[] = {
863         [NL80211_CHAN_NO_HT] = "noht",
864         [NL80211_CHAN_HT20] = "ht20",
865         [NL80211_CHAN_HT40MINUS] = "ht40-",
866         [NL80211_CHAN_HT40PLUS] = "ht40+",
867 };
868
869 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
870 {
871         struct mac80211_hwsim_data *data = hw->priv;
872         struct ieee80211_conf *conf = &hw->conf;
873         static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
874                 [IEEE80211_SMPS_AUTOMATIC] = "auto",
875                 [IEEE80211_SMPS_OFF] = "off",
876                 [IEEE80211_SMPS_STATIC] = "static",
877                 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
878         };
879
880         wiphy_debug(hw->wiphy,
881                     "%s (freq=%d/%s idle=%d ps=%d smps=%s)\n",
882                     __func__,
883                     conf->channel->center_freq,
884                     hwsim_chantypes[conf->channel_type],
885                     !!(conf->flags & IEEE80211_CONF_IDLE),
886                     !!(conf->flags & IEEE80211_CONF_PS),
887                     smps_modes[conf->smps_mode]);
888
889         data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
890
891         data->channel = conf->channel;
892         data->power_level = conf->power_level;
893         if (!data->started || !data->beacon_int)
894                 del_timer(&data->beacon_timer);
895         else
896                 mod_timer(&data->beacon_timer, jiffies + data->beacon_int);
897
898         return 0;
899 }
900
901
902 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
903                                             unsigned int changed_flags,
904                                             unsigned int *total_flags,u64 multicast)
905 {
906         struct mac80211_hwsim_data *data = hw->priv;
907
908         wiphy_debug(hw->wiphy, "%s\n", __func__);
909
910         data->rx_filter = 0;
911         if (*total_flags & FIF_PROMISC_IN_BSS)
912                 data->rx_filter |= FIF_PROMISC_IN_BSS;
913         if (*total_flags & FIF_ALLMULTI)
914                 data->rx_filter |= FIF_ALLMULTI;
915
916         *total_flags = data->rx_filter;
917 }
918
919 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
920                                             struct ieee80211_vif *vif,
921                                             struct ieee80211_bss_conf *info,
922                                             u32 changed)
923 {
924         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
925         struct mac80211_hwsim_data *data = hw->priv;
926
927         hwsim_check_magic(vif);
928
929         wiphy_debug(hw->wiphy, "%s(changed=0x%x)\n", __func__, changed);
930
931         if (changed & BSS_CHANGED_BSSID) {
932                 wiphy_debug(hw->wiphy, "%s: BSSID changed: %pM\n",
933                             __func__, info->bssid);
934                 memcpy(vp->bssid, info->bssid, ETH_ALEN);
935         }
936
937         if (changed & BSS_CHANGED_ASSOC) {
938                 wiphy_debug(hw->wiphy, "  ASSOC: assoc=%d aid=%d\n",
939                             info->assoc, info->aid);
940                 vp->assoc = info->assoc;
941                 vp->aid = info->aid;
942         }
943
944         if (changed & BSS_CHANGED_BEACON_INT) {
945                 wiphy_debug(hw->wiphy, "  BCNINT: %d\n", info->beacon_int);
946                 data->beacon_int = 1024 * info->beacon_int / 1000 * HZ / 1000;
947                 if (WARN_ON(!data->beacon_int))
948                         data->beacon_int = 1;
949                 if (data->started)
950                         mod_timer(&data->beacon_timer,
951                                   jiffies + data->beacon_int);
952         }
953
954         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
955                 wiphy_debug(hw->wiphy, "  ERP_CTS_PROT: %d\n",
956                             info->use_cts_prot);
957         }
958
959         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
960                 wiphy_debug(hw->wiphy, "  ERP_PREAMBLE: %d\n",
961                             info->use_short_preamble);
962         }
963
964         if (changed & BSS_CHANGED_ERP_SLOT) {
965                 wiphy_debug(hw->wiphy, "  ERP_SLOT: %d\n", info->use_short_slot);
966         }
967
968         if (changed & BSS_CHANGED_HT) {
969                 wiphy_debug(hw->wiphy, "  HT: op_mode=0x%x, chantype=%s\n",
970                             info->ht_operation_mode,
971                             hwsim_chantypes[info->channel_type]);
972         }
973
974         if (changed & BSS_CHANGED_BASIC_RATES) {
975                 wiphy_debug(hw->wiphy, "  BASIC_RATES: 0x%llx\n",
976                             (unsigned long long) info->basic_rates);
977         }
978 }
979
980 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
981                                   struct ieee80211_vif *vif,
982                                   struct ieee80211_sta *sta)
983 {
984         hwsim_check_magic(vif);
985         hwsim_set_sta_magic(sta);
986
987         return 0;
988 }
989
990 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
991                                      struct ieee80211_vif *vif,
992                                      struct ieee80211_sta *sta)
993 {
994         hwsim_check_magic(vif);
995         hwsim_clear_sta_magic(sta);
996
997         return 0;
998 }
999
1000 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
1001                                       struct ieee80211_vif *vif,
1002                                       enum sta_notify_cmd cmd,
1003                                       struct ieee80211_sta *sta)
1004 {
1005         hwsim_check_magic(vif);
1006
1007         switch (cmd) {
1008         case STA_NOTIFY_SLEEP:
1009         case STA_NOTIFY_AWAKE:
1010                 /* TODO: make good use of these flags */
1011                 break;
1012         default:
1013                 WARN(1, "Invalid sta notify: %d\n", cmd);
1014                 break;
1015         }
1016 }
1017
1018 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
1019                                   struct ieee80211_sta *sta,
1020                                   bool set)
1021 {
1022         hwsim_check_sta_magic(sta);
1023         return 0;
1024 }
1025
1026 static int mac80211_hwsim_conf_tx(
1027         struct ieee80211_hw *hw,
1028         struct ieee80211_vif *vif, u16 queue,
1029         const struct ieee80211_tx_queue_params *params)
1030 {
1031         wiphy_debug(hw->wiphy,
1032                     "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
1033                     __func__, queue,
1034                     params->txop, params->cw_min,
1035                     params->cw_max, params->aifs);
1036         return 0;
1037 }
1038
1039 static int mac80211_hwsim_get_survey(
1040         struct ieee80211_hw *hw, int idx,
1041         struct survey_info *survey)
1042 {
1043         struct ieee80211_conf *conf = &hw->conf;
1044
1045         wiphy_debug(hw->wiphy, "%s (idx=%d)\n", __func__, idx);
1046
1047         if (idx != 0)
1048                 return -ENOENT;
1049
1050         /* Current channel */
1051         survey->channel = conf->channel;
1052
1053         /*
1054          * Magically conjured noise level --- this is only ok for simulated hardware.
1055          *
1056          * A real driver which cannot determine the real channel noise MUST NOT
1057          * report any noise, especially not a magically conjured one :-)
1058          */
1059         survey->filled = SURVEY_INFO_NOISE_DBM;
1060         survey->noise = -92;
1061
1062         return 0;
1063 }
1064
1065 #ifdef CONFIG_NL80211_TESTMODE
1066 /*
1067  * This section contains example code for using netlink
1068  * attributes with the testmode command in nl80211.
1069  */
1070
1071 /* These enums need to be kept in sync with userspace */
1072 enum hwsim_testmode_attr {
1073         __HWSIM_TM_ATTR_INVALID = 0,
1074         HWSIM_TM_ATTR_CMD       = 1,
1075         HWSIM_TM_ATTR_PS        = 2,
1076
1077         /* keep last */
1078         __HWSIM_TM_ATTR_AFTER_LAST,
1079         HWSIM_TM_ATTR_MAX       = __HWSIM_TM_ATTR_AFTER_LAST - 1
1080 };
1081
1082 enum hwsim_testmode_cmd {
1083         HWSIM_TM_CMD_SET_PS             = 0,
1084         HWSIM_TM_CMD_GET_PS             = 1,
1085         HWSIM_TM_CMD_STOP_QUEUES        = 2,
1086         HWSIM_TM_CMD_WAKE_QUEUES        = 3,
1087 };
1088
1089 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
1090         [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
1091         [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
1092 };
1093
1094 static int hwsim_fops_ps_write(void *dat, u64 val);
1095
1096 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
1097                                        void *data, int len)
1098 {
1099         struct mac80211_hwsim_data *hwsim = hw->priv;
1100         struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
1101         struct sk_buff *skb;
1102         int err, ps;
1103
1104         err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
1105                         hwsim_testmode_policy);
1106         if (err)
1107                 return err;
1108
1109         if (!tb[HWSIM_TM_ATTR_CMD])
1110                 return -EINVAL;
1111
1112         switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
1113         case HWSIM_TM_CMD_SET_PS:
1114                 if (!tb[HWSIM_TM_ATTR_PS])
1115                         return -EINVAL;
1116                 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
1117                 return hwsim_fops_ps_write(hwsim, ps);
1118         case HWSIM_TM_CMD_GET_PS:
1119                 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
1120                                                 nla_total_size(sizeof(u32)));
1121                 if (!skb)
1122                         return -ENOMEM;
1123                 if (nla_put_u32(skb, HWSIM_TM_ATTR_PS, hwsim->ps))
1124                         goto nla_put_failure;
1125                 return cfg80211_testmode_reply(skb);
1126         case HWSIM_TM_CMD_STOP_QUEUES:
1127                 ieee80211_stop_queues(hw);
1128                 return 0;
1129         case HWSIM_TM_CMD_WAKE_QUEUES:
1130                 ieee80211_wake_queues(hw);
1131                 return 0;
1132         default:
1133                 return -EOPNOTSUPP;
1134         }
1135
1136  nla_put_failure:
1137         kfree_skb(skb);
1138         return -ENOBUFS;
1139 }
1140 #endif
1141
1142 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
1143                                        struct ieee80211_vif *vif,
1144                                        enum ieee80211_ampdu_mlme_action action,
1145                                        struct ieee80211_sta *sta, u16 tid, u16 *ssn,
1146                                        u8 buf_size)
1147 {
1148         switch (action) {
1149         case IEEE80211_AMPDU_TX_START:
1150                 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1151                 break;
1152         case IEEE80211_AMPDU_TX_STOP:
1153                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1154                 break;
1155         case IEEE80211_AMPDU_TX_OPERATIONAL:
1156                 break;
1157         case IEEE80211_AMPDU_RX_START:
1158         case IEEE80211_AMPDU_RX_STOP:
1159                 break;
1160         default:
1161                 return -EOPNOTSUPP;
1162         }
1163
1164         return 0;
1165 }
1166
1167 static void mac80211_hwsim_flush(struct ieee80211_hw *hw, bool drop)
1168 {
1169         /* Not implemented, queues only on kernel side */
1170 }
1171
1172 struct hw_scan_done {
1173         struct delayed_work w;
1174         struct ieee80211_hw *hw;
1175 };
1176
1177 static void hw_scan_done(struct work_struct *work)
1178 {
1179         struct hw_scan_done *hsd =
1180                 container_of(work, struct hw_scan_done, w.work);
1181
1182         ieee80211_scan_completed(hsd->hw, false);
1183         kfree(hsd);
1184 }
1185
1186 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
1187                                   struct ieee80211_vif *vif,
1188                                   struct cfg80211_scan_request *req)
1189 {
1190         struct hw_scan_done *hsd = kzalloc(sizeof(*hsd), GFP_KERNEL);
1191         int i;
1192
1193         if (!hsd)
1194                 return -ENOMEM;
1195
1196         hsd->hw = hw;
1197         INIT_DELAYED_WORK(&hsd->w, hw_scan_done);
1198
1199         printk(KERN_DEBUG "hwsim hw_scan request\n");
1200         for (i = 0; i < req->n_channels; i++)
1201                 printk(KERN_DEBUG "hwsim hw_scan freq %d\n",
1202                         req->channels[i]->center_freq);
1203         print_hex_dump(KERN_DEBUG, "scan IEs: ", DUMP_PREFIX_OFFSET,
1204                         16, 1, req->ie, req->ie_len, 1);
1205
1206         ieee80211_queue_delayed_work(hw, &hsd->w, 2 * HZ);
1207
1208         return 0;
1209 }
1210
1211 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw)
1212 {
1213         struct mac80211_hwsim_data *hwsim = hw->priv;
1214
1215         mutex_lock(&hwsim->mutex);
1216
1217         if (hwsim->scanning) {
1218                 printk(KERN_DEBUG "two hwsim sw_scans detected!\n");
1219                 goto out;
1220         }
1221
1222         printk(KERN_DEBUG "hwsim sw_scan request, prepping stuff\n");
1223         hwsim->scanning = true;
1224
1225 out:
1226         mutex_unlock(&hwsim->mutex);
1227 }
1228
1229 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw)
1230 {
1231         struct mac80211_hwsim_data *hwsim = hw->priv;
1232
1233         mutex_lock(&hwsim->mutex);
1234
1235         printk(KERN_DEBUG "hwsim sw_scan_complete\n");
1236         hwsim->scanning = false;
1237
1238         mutex_unlock(&hwsim->mutex);
1239 }
1240
1241 static struct ieee80211_ops mac80211_hwsim_ops =
1242 {
1243         .tx = mac80211_hwsim_tx,
1244         .start = mac80211_hwsim_start,
1245         .stop = mac80211_hwsim_stop,
1246         .add_interface = mac80211_hwsim_add_interface,
1247         .change_interface = mac80211_hwsim_change_interface,
1248         .remove_interface = mac80211_hwsim_remove_interface,
1249         .config = mac80211_hwsim_config,
1250         .configure_filter = mac80211_hwsim_configure_filter,
1251         .bss_info_changed = mac80211_hwsim_bss_info_changed,
1252         .sta_add = mac80211_hwsim_sta_add,
1253         .sta_remove = mac80211_hwsim_sta_remove,
1254         .sta_notify = mac80211_hwsim_sta_notify,
1255         .set_tim = mac80211_hwsim_set_tim,
1256         .conf_tx = mac80211_hwsim_conf_tx,
1257         .get_survey = mac80211_hwsim_get_survey,
1258         CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)
1259         .ampdu_action = mac80211_hwsim_ampdu_action,
1260         .sw_scan_start = mac80211_hwsim_sw_scan,
1261         .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
1262         .flush = mac80211_hwsim_flush,
1263         .get_tsf = mac80211_hwsim_get_tsf,
1264         .set_tsf = mac80211_hwsim_set_tsf,
1265 };
1266
1267
1268 static void mac80211_hwsim_free(void)
1269 {
1270         struct list_head tmplist, *i, *tmp;
1271         struct mac80211_hwsim_data *data, *tmpdata;
1272
1273         INIT_LIST_HEAD(&tmplist);
1274
1275         spin_lock_bh(&hwsim_radio_lock);
1276         list_for_each_safe(i, tmp, &hwsim_radios)
1277                 list_move(i, &tmplist);
1278         spin_unlock_bh(&hwsim_radio_lock);
1279
1280         list_for_each_entry_safe(data, tmpdata, &tmplist, list) {
1281                 debugfs_remove(data->debugfs_group);
1282                 debugfs_remove(data->debugfs_ps);
1283                 debugfs_remove(data->debugfs);
1284                 ieee80211_unregister_hw(data->hw);
1285                 device_unregister(data->dev);
1286                 ieee80211_free_hw(data->hw);
1287         }
1288         class_destroy(hwsim_class);
1289 }
1290
1291
1292 static struct device_driver mac80211_hwsim_driver = {
1293         .name = "mac80211_hwsim"
1294 };
1295
1296 static const struct net_device_ops hwsim_netdev_ops = {
1297         .ndo_start_xmit         = hwsim_mon_xmit,
1298         .ndo_change_mtu         = eth_change_mtu,
1299         .ndo_set_mac_address    = eth_mac_addr,
1300         .ndo_validate_addr      = eth_validate_addr,
1301 };
1302
1303 static void hwsim_mon_setup(struct net_device *dev)
1304 {
1305         dev->netdev_ops = &hwsim_netdev_ops;
1306         dev->destructor = free_netdev;
1307         ether_setup(dev);
1308         dev->tx_queue_len = 0;
1309         dev->type = ARPHRD_IEEE80211_RADIOTAP;
1310         memset(dev->dev_addr, 0, ETH_ALEN);
1311         dev->dev_addr[0] = 0x12;
1312 }
1313
1314
1315 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
1316 {
1317         struct mac80211_hwsim_data *data = dat;
1318         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1319         struct sk_buff *skb;
1320         struct ieee80211_pspoll *pspoll;
1321         u32 _pid;
1322
1323         if (!vp->assoc)
1324                 return;
1325
1326         wiphy_debug(data->hw->wiphy,
1327                     "%s: send PS-Poll to %pM for aid %d\n",
1328                     __func__, vp->bssid, vp->aid);
1329
1330         skb = dev_alloc_skb(sizeof(*pspoll));
1331         if (!skb)
1332                 return;
1333         pspoll = (void *) skb_put(skb, sizeof(*pspoll));
1334         pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
1335                                             IEEE80211_STYPE_PSPOLL |
1336                                             IEEE80211_FCTL_PM);
1337         pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
1338         memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
1339         memcpy(pspoll->ta, mac, ETH_ALEN);
1340
1341         /* wmediumd mode check */
1342         _pid = ACCESS_ONCE(wmediumd_pid);
1343
1344         if (_pid)
1345                 return mac80211_hwsim_tx_frame_nl(data->hw, skb, _pid);
1346
1347         if (!mac80211_hwsim_tx_frame_no_nl(data->hw, skb))
1348                 printk(KERN_DEBUG "%s: PS-poll frame not ack'ed\n", __func__);
1349         dev_kfree_skb(skb);
1350 }
1351
1352
1353 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
1354                                 struct ieee80211_vif *vif, int ps)
1355 {
1356         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1357         struct sk_buff *skb;
1358         struct ieee80211_hdr *hdr;
1359         u32 _pid;
1360
1361         if (!vp->assoc)
1362                 return;
1363
1364         wiphy_debug(data->hw->wiphy,
1365                     "%s: send data::nullfunc to %pM ps=%d\n",
1366                     __func__, vp->bssid, ps);
1367
1368         skb = dev_alloc_skb(sizeof(*hdr));
1369         if (!skb)
1370                 return;
1371         hdr = (void *) skb_put(skb, sizeof(*hdr) - ETH_ALEN);
1372         hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
1373                                          IEEE80211_STYPE_NULLFUNC |
1374                                          (ps ? IEEE80211_FCTL_PM : 0));
1375         hdr->duration_id = cpu_to_le16(0);
1376         memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
1377         memcpy(hdr->addr2, mac, ETH_ALEN);
1378         memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
1379
1380         /* wmediumd mode check */
1381         _pid = ACCESS_ONCE(wmediumd_pid);
1382
1383         if (_pid)
1384                 return mac80211_hwsim_tx_frame_nl(data->hw, skb, _pid);
1385
1386         if (!mac80211_hwsim_tx_frame_no_nl(data->hw, skb))
1387                 printk(KERN_DEBUG "%s: nullfunc frame not ack'ed\n", __func__);
1388         dev_kfree_skb(skb);
1389 }
1390
1391
1392 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
1393                                    struct ieee80211_vif *vif)
1394 {
1395         struct mac80211_hwsim_data *data = dat;
1396         hwsim_send_nullfunc(data, mac, vif, 1);
1397 }
1398
1399
1400 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
1401                                       struct ieee80211_vif *vif)
1402 {
1403         struct mac80211_hwsim_data *data = dat;
1404         hwsim_send_nullfunc(data, mac, vif, 0);
1405 }
1406
1407
1408 static int hwsim_fops_ps_read(void *dat, u64 *val)
1409 {
1410         struct mac80211_hwsim_data *data = dat;
1411         *val = data->ps;
1412         return 0;
1413 }
1414
1415 static int hwsim_fops_ps_write(void *dat, u64 val)
1416 {
1417         struct mac80211_hwsim_data *data = dat;
1418         enum ps_mode old_ps;
1419
1420         if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
1421             val != PS_MANUAL_POLL)
1422                 return -EINVAL;
1423
1424         old_ps = data->ps;
1425         data->ps = val;
1426
1427         if (val == PS_MANUAL_POLL) {
1428                 ieee80211_iterate_active_interfaces(data->hw,
1429                                                     hwsim_send_ps_poll, data);
1430                 data->ps_poll_pending = true;
1431         } else if (old_ps == PS_DISABLED && val != PS_DISABLED) {
1432                 ieee80211_iterate_active_interfaces(data->hw,
1433                                                     hwsim_send_nullfunc_ps,
1434                                                     data);
1435         } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
1436                 ieee80211_iterate_active_interfaces(data->hw,
1437                                                     hwsim_send_nullfunc_no_ps,
1438                                                     data);
1439         }
1440
1441         return 0;
1442 }
1443
1444 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
1445                         "%llu\n");
1446
1447
1448 static int hwsim_fops_group_read(void *dat, u64 *val)
1449 {
1450         struct mac80211_hwsim_data *data = dat;
1451         *val = data->group;
1452         return 0;
1453 }
1454
1455 static int hwsim_fops_group_write(void *dat, u64 val)
1456 {
1457         struct mac80211_hwsim_data *data = dat;
1458         data->group = val;
1459         return 0;
1460 }
1461
1462 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
1463                         hwsim_fops_group_read, hwsim_fops_group_write,
1464                         "%llx\n");
1465
1466 static struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(
1467                              struct mac_address *addr)
1468 {
1469         struct mac80211_hwsim_data *data;
1470         bool _found = false;
1471
1472         spin_lock_bh(&hwsim_radio_lock);
1473         list_for_each_entry(data, &hwsim_radios, list) {
1474                 if (memcmp(data->addresses[1].addr, addr,
1475                           sizeof(struct mac_address)) == 0) {
1476                         _found = true;
1477                         break;
1478                 }
1479         }
1480         spin_unlock_bh(&hwsim_radio_lock);
1481
1482         if (!_found)
1483                 return NULL;
1484
1485         return data;
1486 }
1487
1488 static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
1489                                            struct genl_info *info)
1490 {
1491
1492         struct ieee80211_hdr *hdr;
1493         struct mac80211_hwsim_data *data2;
1494         struct ieee80211_tx_info *txi;
1495         struct hwsim_tx_rate *tx_attempts;
1496         unsigned long ret_skb_ptr;
1497         struct sk_buff *skb, *tmp;
1498         struct mac_address *src;
1499         unsigned int hwsim_flags;
1500
1501         int i;
1502         bool found = false;
1503
1504         if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
1505            !info->attrs[HWSIM_ATTR_FLAGS] ||
1506            !info->attrs[HWSIM_ATTR_COOKIE] ||
1507            !info->attrs[HWSIM_ATTR_TX_INFO])
1508                 goto out;
1509
1510         src = (struct mac_address *)nla_data(
1511                                    info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
1512         hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
1513
1514         ret_skb_ptr = nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
1515
1516         data2 = get_hwsim_data_ref_from_addr(src);
1517
1518         if (data2 == NULL)
1519                 goto out;
1520
1521         /* look for the skb matching the cookie passed back from user */
1522         skb_queue_walk_safe(&data2->pending, skb, tmp) {
1523                 if ((unsigned long)skb == ret_skb_ptr) {
1524                         skb_unlink(skb, &data2->pending);
1525                         found = true;
1526                         break;
1527                 }
1528         }
1529
1530         /* not found */
1531         if (!found)
1532                 goto out;
1533
1534         /* Tx info received because the frame was broadcasted on user space,
1535          so we get all the necessary info: tx attempts and skb control buff */
1536
1537         tx_attempts = (struct hwsim_tx_rate *)nla_data(
1538                        info->attrs[HWSIM_ATTR_TX_INFO]);
1539
1540         /* now send back TX status */
1541         txi = IEEE80211_SKB_CB(skb);
1542
1543         ieee80211_tx_info_clear_status(txi);
1544
1545         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
1546                 txi->status.rates[i].idx = tx_attempts[i].idx;
1547                 txi->status.rates[i].count = tx_attempts[i].count;
1548                 /*txi->status.rates[i].flags = 0;*/
1549         }
1550
1551         txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
1552
1553         if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
1554            (hwsim_flags & HWSIM_TX_STAT_ACK)) {
1555                 if (skb->len >= 16) {
1556                         hdr = (struct ieee80211_hdr *) skb->data;
1557                         mac80211_hwsim_monitor_ack(data2->hw, hdr->addr2);
1558                 }
1559                 txi->flags |= IEEE80211_TX_STAT_ACK;
1560         }
1561         ieee80211_tx_status_irqsafe(data2->hw, skb);
1562         return 0;
1563 out:
1564         return -EINVAL;
1565
1566 }
1567
1568 static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
1569                                           struct genl_info *info)
1570 {
1571
1572         struct mac80211_hwsim_data  *data2;
1573         struct ieee80211_rx_status rx_status;
1574         struct mac_address *dst;
1575         int frame_data_len;
1576         char *frame_data;
1577         struct sk_buff *skb = NULL;
1578
1579         if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
1580            !info->attrs[HWSIM_ATTR_FRAME] ||
1581            !info->attrs[HWSIM_ATTR_RX_RATE] ||
1582            !info->attrs[HWSIM_ATTR_SIGNAL])
1583                 goto out;
1584
1585         dst = (struct mac_address *)nla_data(
1586                                    info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
1587
1588         frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
1589         frame_data = (char *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
1590
1591         /* Allocate new skb here */
1592         skb = alloc_skb(frame_data_len, GFP_KERNEL);
1593         if (skb == NULL)
1594                 goto err;
1595
1596         if (frame_data_len <= IEEE80211_MAX_DATA_LEN) {
1597                 /* Copy the data */
1598                 memcpy(skb_put(skb, frame_data_len), frame_data,
1599                        frame_data_len);
1600         } else
1601                 goto err;
1602
1603         data2 = get_hwsim_data_ref_from_addr(dst);
1604
1605         if (data2 == NULL)
1606                 goto out;
1607
1608         /* check if radio is configured properly */
1609
1610         if (data2->idle || !data2->started || !data2->channel)
1611                 goto out;
1612
1613         /*A frame is received from user space*/
1614         memset(&rx_status, 0, sizeof(rx_status));
1615         rx_status.freq = data2->channel->center_freq;
1616         rx_status.band = data2->channel->band;
1617         rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
1618         rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
1619
1620         memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
1621         ieee80211_rx_irqsafe(data2->hw, skb);
1622
1623         return 0;
1624 err:
1625         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
1626         goto out;
1627 out:
1628         dev_kfree_skb(skb);
1629         return -EINVAL;
1630 }
1631
1632 static int hwsim_register_received_nl(struct sk_buff *skb_2,
1633                                       struct genl_info *info)
1634 {
1635         if (info == NULL)
1636                 goto out;
1637
1638         wmediumd_pid = info->snd_pid;
1639
1640         printk(KERN_DEBUG "mac80211_hwsim: received a REGISTER, "
1641                "switching to wmediumd mode with pid %d\n", info->snd_pid);
1642
1643         return 0;
1644 out:
1645         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
1646         return -EINVAL;
1647 }
1648
1649 /* Generic Netlink operations array */
1650 static struct genl_ops hwsim_ops[] = {
1651         {
1652                 .cmd = HWSIM_CMD_REGISTER,
1653                 .policy = hwsim_genl_policy,
1654                 .doit = hwsim_register_received_nl,
1655                 .flags = GENL_ADMIN_PERM,
1656         },
1657         {
1658                 .cmd = HWSIM_CMD_FRAME,
1659                 .policy = hwsim_genl_policy,
1660                 .doit = hwsim_cloned_frame_received_nl,
1661         },
1662         {
1663                 .cmd = HWSIM_CMD_TX_INFO_FRAME,
1664                 .policy = hwsim_genl_policy,
1665                 .doit = hwsim_tx_info_frame_received_nl,
1666         },
1667 };
1668
1669 static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
1670                                          unsigned long state,
1671                                          void *_notify)
1672 {
1673         struct netlink_notify *notify = _notify;
1674
1675         if (state != NETLINK_URELEASE)
1676                 return NOTIFY_DONE;
1677
1678         if (notify->pid == wmediumd_pid) {
1679                 printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
1680                        " socket, switching to perfect channel medium\n");
1681                 wmediumd_pid = 0;
1682         }
1683         return NOTIFY_DONE;
1684
1685 }
1686
1687 static struct notifier_block hwsim_netlink_notifier = {
1688         .notifier_call = mac80211_hwsim_netlink_notify,
1689 };
1690
1691 static int hwsim_init_netlink(void)
1692 {
1693         int rc;
1694         printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
1695
1696         rc = genl_register_family_with_ops(&hwsim_genl_family,
1697                 hwsim_ops, ARRAY_SIZE(hwsim_ops));
1698         if (rc)
1699                 goto failure;
1700
1701         rc = netlink_register_notifier(&hwsim_netlink_notifier);
1702         if (rc)
1703                 goto failure;
1704
1705         return 0;
1706
1707 failure:
1708         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
1709         return -EINVAL;
1710 }
1711
1712 static void hwsim_exit_netlink(void)
1713 {
1714         int ret;
1715
1716         printk(KERN_INFO "mac80211_hwsim: closing netlink\n");
1717         /* unregister the notifier */
1718         netlink_unregister_notifier(&hwsim_netlink_notifier);
1719         /* unregister the family */
1720         ret = genl_unregister_family(&hwsim_genl_family);
1721         if (ret)
1722                 printk(KERN_DEBUG "mac80211_hwsim: "
1723                        "unregister family %i\n", ret);
1724 }
1725
1726 static const struct ieee80211_iface_limit hwsim_if_limits[] = {
1727         { .max = 1, .types = BIT(NL80211_IFTYPE_ADHOC) },
1728         { .max = 2048,  .types = BIT(NL80211_IFTYPE_STATION) |
1729                                  BIT(NL80211_IFTYPE_P2P_CLIENT) |
1730 #ifdef CONFIG_MAC80211_MESH
1731                                  BIT(NL80211_IFTYPE_MESH_POINT) |
1732 #endif
1733                                  BIT(NL80211_IFTYPE_AP) |
1734                                  BIT(NL80211_IFTYPE_P2P_GO) },
1735 };
1736
1737 static const struct ieee80211_iface_combination hwsim_if_comb = {
1738         .limits = hwsim_if_limits,
1739         .n_limits = ARRAY_SIZE(hwsim_if_limits),
1740         .max_interfaces = 2048,
1741         .num_different_channels = 1,
1742 };
1743
1744 static int __init init_mac80211_hwsim(void)
1745 {
1746         int i, err = 0;
1747         u8 addr[ETH_ALEN];
1748         struct mac80211_hwsim_data *data;
1749         struct ieee80211_hw *hw;
1750         enum ieee80211_band band;
1751
1752         if (radios < 1 || radios > 100)
1753                 return -EINVAL;
1754
1755         if (fake_hw_scan) {
1756                 mac80211_hwsim_ops.hw_scan = mac80211_hwsim_hw_scan;
1757                 mac80211_hwsim_ops.sw_scan_start = NULL;
1758                 mac80211_hwsim_ops.sw_scan_complete = NULL;
1759         }
1760
1761         spin_lock_init(&hwsim_radio_lock);
1762         INIT_LIST_HEAD(&hwsim_radios);
1763
1764         hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
1765         if (IS_ERR(hwsim_class))
1766                 return PTR_ERR(hwsim_class);
1767
1768         memset(addr, 0, ETH_ALEN);
1769         addr[0] = 0x02;
1770
1771         for (i = 0; i < radios; i++) {
1772                 printk(KERN_DEBUG "mac80211_hwsim: Initializing radio %d\n",
1773                        i);
1774                 hw = ieee80211_alloc_hw(sizeof(*data), &mac80211_hwsim_ops);
1775                 if (!hw) {
1776                         printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw "
1777                                "failed\n");
1778                         err = -ENOMEM;
1779                         goto failed;
1780                 }
1781                 data = hw->priv;
1782                 data->hw = hw;
1783
1784                 data->dev = device_create(hwsim_class, NULL, 0, hw,
1785                                           "hwsim%d", i);
1786                 if (IS_ERR(data->dev)) {
1787                         printk(KERN_DEBUG
1788                                "mac80211_hwsim: device_create "
1789                                "failed (%ld)\n", PTR_ERR(data->dev));
1790                         err = -ENOMEM;
1791                         goto failed_drvdata;
1792                 }
1793                 data->dev->driver = &mac80211_hwsim_driver;
1794                 skb_queue_head_init(&data->pending);
1795
1796                 SET_IEEE80211_DEV(hw, data->dev);
1797                 addr[3] = i >> 8;
1798                 addr[4] = i;
1799                 memcpy(data->addresses[0].addr, addr, ETH_ALEN);
1800                 memcpy(data->addresses[1].addr, addr, ETH_ALEN);
1801                 data->addresses[1].addr[0] |= 0x40;
1802                 hw->wiphy->n_addresses = 2;
1803                 hw->wiphy->addresses = data->addresses;
1804
1805                 hw->wiphy->iface_combinations = &hwsim_if_comb;
1806                 hw->wiphy->n_iface_combinations = 1;
1807
1808                 if (fake_hw_scan) {
1809                         hw->wiphy->max_scan_ssids = 255;
1810                         hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
1811                 }
1812
1813                 hw->channel_change_time = 1;
1814                 hw->queues = 4;
1815                 hw->wiphy->interface_modes =
1816                         BIT(NL80211_IFTYPE_STATION) |
1817                         BIT(NL80211_IFTYPE_AP) |
1818                         BIT(NL80211_IFTYPE_P2P_CLIENT) |
1819                         BIT(NL80211_IFTYPE_P2P_GO) |
1820                         BIT(NL80211_IFTYPE_ADHOC) |
1821                         BIT(NL80211_IFTYPE_MESH_POINT);
1822
1823                 hw->flags = IEEE80211_HW_MFP_CAPABLE |
1824                             IEEE80211_HW_SIGNAL_DBM |
1825                             IEEE80211_HW_SUPPORTS_STATIC_SMPS |
1826                             IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
1827                             IEEE80211_HW_AMPDU_AGGREGATION |
1828                             IEEE80211_HW_WANT_MONITOR_VIF;
1829
1830                 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS |
1831                                     WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL;
1832
1833                 /* ask mac80211 to reserve space for magic */
1834                 hw->vif_data_size = sizeof(struct hwsim_vif_priv);
1835                 hw->sta_data_size = sizeof(struct hwsim_sta_priv);
1836
1837                 memcpy(data->channels_2ghz, hwsim_channels_2ghz,
1838                         sizeof(hwsim_channels_2ghz));
1839                 memcpy(data->channels_5ghz, hwsim_channels_5ghz,
1840                         sizeof(hwsim_channels_5ghz));
1841                 memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
1842
1843                 for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) {
1844                         struct ieee80211_supported_band *sband = &data->bands[band];
1845                         switch (band) {
1846                         case IEEE80211_BAND_2GHZ:
1847                                 sband->channels = data->channels_2ghz;
1848                                 sband->n_channels =
1849                                         ARRAY_SIZE(hwsim_channels_2ghz);
1850                                 sband->bitrates = data->rates;
1851                                 sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
1852                                 break;
1853                         case IEEE80211_BAND_5GHZ:
1854                                 sband->channels = data->channels_5ghz;
1855                                 sband->n_channels =
1856                                         ARRAY_SIZE(hwsim_channels_5ghz);
1857                                 sband->bitrates = data->rates + 4;
1858                                 sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
1859                                 break;
1860                         default:
1861                                 continue;
1862                         }
1863
1864                         sband->ht_cap.ht_supported = true;
1865                         sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
1866                                 IEEE80211_HT_CAP_GRN_FLD |
1867                                 IEEE80211_HT_CAP_SGI_40 |
1868                                 IEEE80211_HT_CAP_DSSSCCK40;
1869                         sband->ht_cap.ampdu_factor = 0x3;
1870                         sband->ht_cap.ampdu_density = 0x6;
1871                         memset(&sband->ht_cap.mcs, 0,
1872                                sizeof(sband->ht_cap.mcs));
1873                         sband->ht_cap.mcs.rx_mask[0] = 0xff;
1874                         sband->ht_cap.mcs.rx_mask[1] = 0xff;
1875                         sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
1876
1877                         hw->wiphy->bands[band] = sband;
1878                 }
1879                 /* By default all radios are belonging to the first group */
1880                 data->group = 1;
1881                 mutex_init(&data->mutex);
1882
1883                 /* Enable frame retransmissions for lossy channels */
1884                 hw->max_rates = 4;
1885                 hw->max_rate_tries = 11;
1886
1887                 /* Work to be done prior to ieee80211_register_hw() */
1888                 switch (regtest) {
1889                 case HWSIM_REGTEST_DISABLED:
1890                 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
1891                 case HWSIM_REGTEST_DRIVER_REG_ALL:
1892                 case HWSIM_REGTEST_DIFF_COUNTRY:
1893                         /*
1894                          * Nothing to be done for driver regulatory domain
1895                          * hints prior to ieee80211_register_hw()
1896                          */
1897                         break;
1898                 case HWSIM_REGTEST_WORLD_ROAM:
1899                         if (i == 0) {
1900                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1901                                 wiphy_apply_custom_regulatory(hw->wiphy,
1902                                         &hwsim_world_regdom_custom_01);
1903                         }
1904                         break;
1905                 case HWSIM_REGTEST_CUSTOM_WORLD:
1906                         hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1907                         wiphy_apply_custom_regulatory(hw->wiphy,
1908                                 &hwsim_world_regdom_custom_01);
1909                         break;
1910                 case HWSIM_REGTEST_CUSTOM_WORLD_2:
1911                         if (i == 0) {
1912                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1913                                 wiphy_apply_custom_regulatory(hw->wiphy,
1914                                         &hwsim_world_regdom_custom_01);
1915                         } else if (i == 1) {
1916                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1917                                 wiphy_apply_custom_regulatory(hw->wiphy,
1918                                         &hwsim_world_regdom_custom_02);
1919                         }
1920                         break;
1921                 case HWSIM_REGTEST_STRICT_ALL:
1922                         hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1923                         break;
1924                 case HWSIM_REGTEST_STRICT_FOLLOW:
1925                 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
1926                         if (i == 0)
1927                                 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1928                         break;
1929                 case HWSIM_REGTEST_ALL:
1930                         if (i == 0) {
1931                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1932                                 wiphy_apply_custom_regulatory(hw->wiphy,
1933                                         &hwsim_world_regdom_custom_01);
1934                         } else if (i == 1) {
1935                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1936                                 wiphy_apply_custom_regulatory(hw->wiphy,
1937                                         &hwsim_world_regdom_custom_02);
1938                         } else if (i == 4)
1939                                 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1940                         break;
1941                 default:
1942                         break;
1943                 }
1944
1945                 /* give the regulatory workqueue a chance to run */
1946                 if (regtest)
1947                         schedule_timeout_interruptible(1);
1948                 err = ieee80211_register_hw(hw);
1949                 if (err < 0) {
1950                         printk(KERN_DEBUG "mac80211_hwsim: "
1951                                "ieee80211_register_hw failed (%d)\n", err);
1952                         goto failed_hw;
1953                 }
1954
1955                 /* Work to be done after to ieee80211_register_hw() */
1956                 switch (regtest) {
1957                 case HWSIM_REGTEST_WORLD_ROAM:
1958                 case HWSIM_REGTEST_DISABLED:
1959                         break;
1960                 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
1961                         if (!i)
1962                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1963                         break;
1964                 case HWSIM_REGTEST_DRIVER_REG_ALL:
1965                 case HWSIM_REGTEST_STRICT_ALL:
1966                         regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1967                         break;
1968                 case HWSIM_REGTEST_DIFF_COUNTRY:
1969                         if (i < ARRAY_SIZE(hwsim_alpha2s))
1970                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[i]);
1971                         break;
1972                 case HWSIM_REGTEST_CUSTOM_WORLD:
1973                 case HWSIM_REGTEST_CUSTOM_WORLD_2:
1974                         /*
1975                          * Nothing to be done for custom world regulatory
1976                          * domains after to ieee80211_register_hw
1977                          */
1978                         break;
1979                 case HWSIM_REGTEST_STRICT_FOLLOW:
1980                         if (i == 0)
1981                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1982                         break;
1983                 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
1984                         if (i == 0)
1985                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1986                         else if (i == 1)
1987                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
1988                         break;
1989                 case HWSIM_REGTEST_ALL:
1990                         if (i == 2)
1991                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1992                         else if (i == 3)
1993                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
1994                         else if (i == 4)
1995                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[2]);
1996                         break;
1997                 default:
1998                         break;
1999                 }
2000
2001                 wiphy_debug(hw->wiphy, "hwaddr %pm registered\n",
2002                             hw->wiphy->perm_addr);
2003
2004                 data->debugfs = debugfs_create_dir("hwsim",
2005                                                    hw->wiphy->debugfsdir);
2006                 data->debugfs_ps = debugfs_create_file("ps", 0666,
2007                                                        data->debugfs, data,
2008                                                        &hwsim_fops_ps);
2009                 data->debugfs_group = debugfs_create_file("group", 0666,
2010                                                         data->debugfs, data,
2011                                                         &hwsim_fops_group);
2012
2013                 setup_timer(&data->beacon_timer, mac80211_hwsim_beacon,
2014                             (unsigned long) hw);
2015
2016                 list_add_tail(&data->list, &hwsim_radios);
2017         }
2018
2019         hwsim_mon = alloc_netdev(0, "hwsim%d", hwsim_mon_setup);
2020         if (hwsim_mon == NULL)
2021                 goto failed;
2022
2023         rtnl_lock();
2024
2025         err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
2026         if (err < 0)
2027                 goto failed_mon;
2028
2029
2030         err = register_netdevice(hwsim_mon);
2031         if (err < 0)
2032                 goto failed_mon;
2033
2034         rtnl_unlock();
2035
2036         err = hwsim_init_netlink();
2037         if (err < 0)
2038                 goto failed_nl;
2039
2040         return 0;
2041
2042 failed_nl:
2043         printk(KERN_DEBUG "mac_80211_hwsim: failed initializing netlink\n");
2044         return err;
2045
2046 failed_mon:
2047         rtnl_unlock();
2048         free_netdev(hwsim_mon);
2049         mac80211_hwsim_free();
2050         return err;
2051
2052 failed_hw:
2053         device_unregister(data->dev);
2054 failed_drvdata:
2055         ieee80211_free_hw(hw);
2056 failed:
2057         mac80211_hwsim_free();
2058         return err;
2059 }
2060
2061
2062 static void __exit exit_mac80211_hwsim(void)
2063 {
2064         printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
2065
2066         hwsim_exit_netlink();
2067
2068         mac80211_hwsim_free();
2069         unregister_netdev(hwsim_mon);
2070 }
2071
2072
2073 module_init(init_mac80211_hwsim);
2074 module_exit(exit_mac80211_hwsim);