34b79fc91e39995398f9074fdfcdf4950978a8d4
[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         if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
616                 rx_status.flag |= RX_FLAG_HT;
617         if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
618                 rx_status.flag |= RX_FLAG_40MHZ;
619         if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
620                 rx_status.flag |= RX_FLAG_SHORT_GI;
621         /* TODO: simulate real signal strength (and optional packet loss) */
622         rx_status.signal = data->power_level - 50;
623
624         if (data->ps != PS_DISABLED)
625                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
626
627         /* release the skb's source info */
628         skb_orphan(skb);
629         skb_dst_drop(skb);
630         skb->mark = 0;
631         secpath_reset(skb);
632         nf_reset(skb);
633
634         /* Copy skb to all enabled radios that are on the current frequency */
635         spin_lock(&hwsim_radio_lock);
636         list_for_each_entry(data2, &hwsim_radios, list) {
637                 struct sk_buff *nskb;
638
639                 if (data == data2)
640                         continue;
641
642                 if (data2->idle || !data2->started ||
643                     !hwsim_ps_rx_ok(data2, skb) ||
644                     !data->channel || !data2->channel ||
645                     data->channel->center_freq != data2->channel->center_freq ||
646                     !(data->group & data2->group))
647                         continue;
648
649                 nskb = skb_copy(skb, GFP_ATOMIC);
650                 if (nskb == NULL)
651                         continue;
652
653                 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
654                         ack = true;
655                 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
656                 ieee80211_rx_irqsafe(data2->hw, nskb);
657         }
658         spin_unlock(&hwsim_radio_lock);
659
660         return ack;
661 }
662
663 static void mac80211_hwsim_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
664 {
665         bool ack;
666         struct ieee80211_tx_info *txi;
667         int _pid;
668
669         mac80211_hwsim_monitor_rx(hw, skb);
670
671         if (skb->len < 10) {
672                 /* Should not happen; just a sanity check for addr1 use */
673                 dev_kfree_skb(skb);
674                 return;
675         }
676
677         /* wmediumd mode check */
678         _pid = wmediumd_pid;
679
680         if (_pid)
681                 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
682
683         /* NO wmediumd detected, perfect medium simulation */
684         ack = mac80211_hwsim_tx_frame_no_nl(hw, skb);
685
686         if (ack && skb->len >= 16) {
687                 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
688                 mac80211_hwsim_monitor_ack(hw, hdr->addr2);
689         }
690
691         txi = IEEE80211_SKB_CB(skb);
692
693         if (txi->control.vif)
694                 hwsim_check_magic(txi->control.vif);
695         if (txi->control.sta)
696                 hwsim_check_sta_magic(txi->control.sta);
697
698         ieee80211_tx_info_clear_status(txi);
699         if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
700                 txi->flags |= IEEE80211_TX_STAT_ACK;
701         ieee80211_tx_status_irqsafe(hw, skb);
702 }
703
704
705 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
706 {
707         struct mac80211_hwsim_data *data = hw->priv;
708         wiphy_debug(hw->wiphy, "%s\n", __func__);
709         data->started = 1;
710         return 0;
711 }
712
713
714 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
715 {
716         struct mac80211_hwsim_data *data = hw->priv;
717         data->started = 0;
718         del_timer(&data->beacon_timer);
719         wiphy_debug(hw->wiphy, "%s\n", __func__);
720 }
721
722
723 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
724                                         struct ieee80211_vif *vif)
725 {
726         wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
727                     __func__, ieee80211_vif_type_p2p(vif),
728                     vif->addr);
729         hwsim_set_magic(vif);
730         return 0;
731 }
732
733
734 static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
735                                            struct ieee80211_vif *vif,
736                                            enum nl80211_iftype newtype,
737                                            bool newp2p)
738 {
739         newtype = ieee80211_iftype_p2p(newtype, newp2p);
740         wiphy_debug(hw->wiphy,
741                     "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
742                     __func__, ieee80211_vif_type_p2p(vif),
743                     newtype, vif->addr);
744         hwsim_check_magic(vif);
745
746         return 0;
747 }
748
749 static void mac80211_hwsim_remove_interface(
750         struct ieee80211_hw *hw, struct ieee80211_vif *vif)
751 {
752         wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
753                     __func__, ieee80211_vif_type_p2p(vif),
754                     vif->addr);
755         hwsim_check_magic(vif);
756         hwsim_clear_magic(vif);
757 }
758
759
760 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
761                                      struct ieee80211_vif *vif)
762 {
763         struct ieee80211_hw *hw = arg;
764         struct sk_buff *skb;
765         struct ieee80211_tx_info *info;
766         int _pid;
767
768         hwsim_check_magic(vif);
769
770         if (vif->type != NL80211_IFTYPE_AP &&
771             vif->type != NL80211_IFTYPE_MESH_POINT &&
772             vif->type != NL80211_IFTYPE_ADHOC)
773                 return;
774
775         skb = ieee80211_beacon_get(hw, vif);
776         if (skb == NULL)
777                 return;
778         info = IEEE80211_SKB_CB(skb);
779
780         mac80211_hwsim_monitor_rx(hw, skb);
781
782         /* wmediumd mode check */
783         _pid = wmediumd_pid;
784
785         if (_pid)
786                 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
787
788         mac80211_hwsim_tx_frame_no_nl(hw, skb);
789         dev_kfree_skb(skb);
790 }
791
792
793 static void mac80211_hwsim_beacon(unsigned long arg)
794 {
795         struct ieee80211_hw *hw = (struct ieee80211_hw *) arg;
796         struct mac80211_hwsim_data *data = hw->priv;
797
798         if (!data->started)
799                 return;
800
801         ieee80211_iterate_active_interfaces_atomic(
802                 hw, mac80211_hwsim_beacon_tx, hw);
803
804         data->beacon_timer.expires = jiffies + data->beacon_int;
805         add_timer(&data->beacon_timer);
806 }
807
808 static const char *hwsim_chantypes[] = {
809         [NL80211_CHAN_NO_HT] = "noht",
810         [NL80211_CHAN_HT20] = "ht20",
811         [NL80211_CHAN_HT40MINUS] = "ht40-",
812         [NL80211_CHAN_HT40PLUS] = "ht40+",
813 };
814
815 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
816 {
817         struct mac80211_hwsim_data *data = hw->priv;
818         struct ieee80211_conf *conf = &hw->conf;
819         static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
820                 [IEEE80211_SMPS_AUTOMATIC] = "auto",
821                 [IEEE80211_SMPS_OFF] = "off",
822                 [IEEE80211_SMPS_STATIC] = "static",
823                 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
824         };
825
826         wiphy_debug(hw->wiphy,
827                     "%s (freq=%d/%s idle=%d ps=%d smps=%s)\n",
828                     __func__,
829                     conf->channel->center_freq,
830                     hwsim_chantypes[conf->channel_type],
831                     !!(conf->flags & IEEE80211_CONF_IDLE),
832                     !!(conf->flags & IEEE80211_CONF_PS),
833                     smps_modes[conf->smps_mode]);
834
835         data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
836
837         data->channel = conf->channel;
838         data->power_level = conf->power_level;
839         if (!data->started || !data->beacon_int)
840                 del_timer(&data->beacon_timer);
841         else
842                 mod_timer(&data->beacon_timer, jiffies + data->beacon_int);
843
844         return 0;
845 }
846
847
848 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
849                                             unsigned int changed_flags,
850                                             unsigned int *total_flags,u64 multicast)
851 {
852         struct mac80211_hwsim_data *data = hw->priv;
853
854         wiphy_debug(hw->wiphy, "%s\n", __func__);
855
856         data->rx_filter = 0;
857         if (*total_flags & FIF_PROMISC_IN_BSS)
858                 data->rx_filter |= FIF_PROMISC_IN_BSS;
859         if (*total_flags & FIF_ALLMULTI)
860                 data->rx_filter |= FIF_ALLMULTI;
861
862         *total_flags = data->rx_filter;
863 }
864
865 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
866                                             struct ieee80211_vif *vif,
867                                             struct ieee80211_bss_conf *info,
868                                             u32 changed)
869 {
870         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
871         struct mac80211_hwsim_data *data = hw->priv;
872
873         hwsim_check_magic(vif);
874
875         wiphy_debug(hw->wiphy, "%s(changed=0x%x)\n", __func__, changed);
876
877         if (changed & BSS_CHANGED_BSSID) {
878                 wiphy_debug(hw->wiphy, "%s: BSSID changed: %pM\n",
879                             __func__, info->bssid);
880                 memcpy(vp->bssid, info->bssid, ETH_ALEN);
881         }
882
883         if (changed & BSS_CHANGED_ASSOC) {
884                 wiphy_debug(hw->wiphy, "  ASSOC: assoc=%d aid=%d\n",
885                             info->assoc, info->aid);
886                 vp->assoc = info->assoc;
887                 vp->aid = info->aid;
888         }
889
890         if (changed & BSS_CHANGED_BEACON_INT) {
891                 wiphy_debug(hw->wiphy, "  BCNINT: %d\n", info->beacon_int);
892                 data->beacon_int = 1024 * info->beacon_int / 1000 * HZ / 1000;
893                 if (WARN_ON(!data->beacon_int))
894                         data->beacon_int = 1;
895                 if (data->started)
896                         mod_timer(&data->beacon_timer,
897                                   jiffies + data->beacon_int);
898         }
899
900         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
901                 wiphy_debug(hw->wiphy, "  ERP_CTS_PROT: %d\n",
902                             info->use_cts_prot);
903         }
904
905         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
906                 wiphy_debug(hw->wiphy, "  ERP_PREAMBLE: %d\n",
907                             info->use_short_preamble);
908         }
909
910         if (changed & BSS_CHANGED_ERP_SLOT) {
911                 wiphy_debug(hw->wiphy, "  ERP_SLOT: %d\n", info->use_short_slot);
912         }
913
914         if (changed & BSS_CHANGED_HT) {
915                 wiphy_debug(hw->wiphy, "  HT: op_mode=0x%x, chantype=%s\n",
916                             info->ht_operation_mode,
917                             hwsim_chantypes[info->channel_type]);
918         }
919
920         if (changed & BSS_CHANGED_BASIC_RATES) {
921                 wiphy_debug(hw->wiphy, "  BASIC_RATES: 0x%llx\n",
922                             (unsigned long long) info->basic_rates);
923         }
924 }
925
926 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
927                                   struct ieee80211_vif *vif,
928                                   struct ieee80211_sta *sta)
929 {
930         hwsim_check_magic(vif);
931         hwsim_set_sta_magic(sta);
932
933         return 0;
934 }
935
936 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
937                                      struct ieee80211_vif *vif,
938                                      struct ieee80211_sta *sta)
939 {
940         hwsim_check_magic(vif);
941         hwsim_clear_sta_magic(sta);
942
943         return 0;
944 }
945
946 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
947                                       struct ieee80211_vif *vif,
948                                       enum sta_notify_cmd cmd,
949                                       struct ieee80211_sta *sta)
950 {
951         hwsim_check_magic(vif);
952
953         switch (cmd) {
954         case STA_NOTIFY_SLEEP:
955         case STA_NOTIFY_AWAKE:
956                 /* TODO: make good use of these flags */
957                 break;
958         default:
959                 WARN(1, "Invalid sta notify: %d\n", cmd);
960                 break;
961         }
962 }
963
964 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
965                                   struct ieee80211_sta *sta,
966                                   bool set)
967 {
968         hwsim_check_sta_magic(sta);
969         return 0;
970 }
971
972 static int mac80211_hwsim_conf_tx(
973         struct ieee80211_hw *hw, u16 queue,
974         const struct ieee80211_tx_queue_params *params)
975 {
976         wiphy_debug(hw->wiphy,
977                     "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
978                     __func__, queue,
979                     params->txop, params->cw_min,
980                     params->cw_max, params->aifs);
981         return 0;
982 }
983
984 static int mac80211_hwsim_get_survey(
985         struct ieee80211_hw *hw, int idx,
986         struct survey_info *survey)
987 {
988         struct ieee80211_conf *conf = &hw->conf;
989
990         wiphy_debug(hw->wiphy, "%s (idx=%d)\n", __func__, idx);
991
992         if (idx != 0)
993                 return -ENOENT;
994
995         /* Current channel */
996         survey->channel = conf->channel;
997
998         /*
999          * Magically conjured noise level --- this is only ok for simulated hardware.
1000          *
1001          * A real driver which cannot determine the real channel noise MUST NOT
1002          * report any noise, especially not a magically conjured one :-)
1003          */
1004         survey->filled = SURVEY_INFO_NOISE_DBM;
1005         survey->noise = -92;
1006
1007         return 0;
1008 }
1009
1010 #ifdef CONFIG_NL80211_TESTMODE
1011 /*
1012  * This section contains example code for using netlink
1013  * attributes with the testmode command in nl80211.
1014  */
1015
1016 /* These enums need to be kept in sync with userspace */
1017 enum hwsim_testmode_attr {
1018         __HWSIM_TM_ATTR_INVALID = 0,
1019         HWSIM_TM_ATTR_CMD       = 1,
1020         HWSIM_TM_ATTR_PS        = 2,
1021
1022         /* keep last */
1023         __HWSIM_TM_ATTR_AFTER_LAST,
1024         HWSIM_TM_ATTR_MAX       = __HWSIM_TM_ATTR_AFTER_LAST - 1
1025 };
1026
1027 enum hwsim_testmode_cmd {
1028         HWSIM_TM_CMD_SET_PS             = 0,
1029         HWSIM_TM_CMD_GET_PS             = 1,
1030 };
1031
1032 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
1033         [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
1034         [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
1035 };
1036
1037 static int hwsim_fops_ps_write(void *dat, u64 val);
1038
1039 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
1040                                        void *data, int len)
1041 {
1042         struct mac80211_hwsim_data *hwsim = hw->priv;
1043         struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
1044         struct sk_buff *skb;
1045         int err, ps;
1046
1047         err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
1048                         hwsim_testmode_policy);
1049         if (err)
1050                 return err;
1051
1052         if (!tb[HWSIM_TM_ATTR_CMD])
1053                 return -EINVAL;
1054
1055         switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
1056         case HWSIM_TM_CMD_SET_PS:
1057                 if (!tb[HWSIM_TM_ATTR_PS])
1058                         return -EINVAL;
1059                 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
1060                 return hwsim_fops_ps_write(hwsim, ps);
1061         case HWSIM_TM_CMD_GET_PS:
1062                 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
1063                                                 nla_total_size(sizeof(u32)));
1064                 if (!skb)
1065                         return -ENOMEM;
1066                 NLA_PUT_U32(skb, HWSIM_TM_ATTR_PS, hwsim->ps);
1067                 return cfg80211_testmode_reply(skb);
1068         default:
1069                 return -EOPNOTSUPP;
1070         }
1071
1072  nla_put_failure:
1073         kfree_skb(skb);
1074         return -ENOBUFS;
1075 }
1076 #endif
1077
1078 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
1079                                        struct ieee80211_vif *vif,
1080                                        enum ieee80211_ampdu_mlme_action action,
1081                                        struct ieee80211_sta *sta, u16 tid, u16 *ssn,
1082                                        u8 buf_size)
1083 {
1084         switch (action) {
1085         case IEEE80211_AMPDU_TX_START:
1086                 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1087                 break;
1088         case IEEE80211_AMPDU_TX_STOP:
1089                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1090                 break;
1091         case IEEE80211_AMPDU_TX_OPERATIONAL:
1092                 break;
1093         case IEEE80211_AMPDU_RX_START:
1094         case IEEE80211_AMPDU_RX_STOP:
1095                 break;
1096         default:
1097                 return -EOPNOTSUPP;
1098         }
1099
1100         return 0;
1101 }
1102
1103 static void mac80211_hwsim_flush(struct ieee80211_hw *hw, bool drop)
1104 {
1105         /* Not implemented, queues only on kernel side */
1106 }
1107
1108 struct hw_scan_done {
1109         struct delayed_work w;
1110         struct ieee80211_hw *hw;
1111 };
1112
1113 static void hw_scan_done(struct work_struct *work)
1114 {
1115         struct hw_scan_done *hsd =
1116                 container_of(work, struct hw_scan_done, w.work);
1117
1118         ieee80211_scan_completed(hsd->hw, false);
1119         kfree(hsd);
1120 }
1121
1122 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
1123                                   struct ieee80211_vif *vif,
1124                                   struct cfg80211_scan_request *req)
1125 {
1126         struct hw_scan_done *hsd = kzalloc(sizeof(*hsd), GFP_KERNEL);
1127         int i;
1128
1129         if (!hsd)
1130                 return -ENOMEM;
1131
1132         hsd->hw = hw;
1133         INIT_DELAYED_WORK(&hsd->w, hw_scan_done);
1134
1135         printk(KERN_DEBUG "hwsim hw_scan request\n");
1136         for (i = 0; i < req->n_channels; i++)
1137                 printk(KERN_DEBUG "hwsim hw_scan freq %d\n",
1138                         req->channels[i]->center_freq);
1139         print_hex_dump(KERN_DEBUG, "scan IEs: ", DUMP_PREFIX_OFFSET,
1140                         16, 1, req->ie, req->ie_len, 1);
1141
1142         ieee80211_queue_delayed_work(hw, &hsd->w, 2 * HZ);
1143
1144         return 0;
1145 }
1146
1147 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw)
1148 {
1149         struct mac80211_hwsim_data *hwsim = hw->priv;
1150
1151         mutex_lock(&hwsim->mutex);
1152
1153         if (hwsim->scanning) {
1154                 printk(KERN_DEBUG "two hwsim sw_scans detected!\n");
1155                 goto out;
1156         }
1157
1158         printk(KERN_DEBUG "hwsim sw_scan request, prepping stuff\n");
1159         hwsim->scanning = true;
1160
1161 out:
1162         mutex_unlock(&hwsim->mutex);
1163 }
1164
1165 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw)
1166 {
1167         struct mac80211_hwsim_data *hwsim = hw->priv;
1168
1169         mutex_lock(&hwsim->mutex);
1170
1171         printk(KERN_DEBUG "hwsim sw_scan_complete\n");
1172         hwsim->scanning = false;
1173
1174         mutex_unlock(&hwsim->mutex);
1175 }
1176
1177 static struct ieee80211_ops mac80211_hwsim_ops =
1178 {
1179         .tx = mac80211_hwsim_tx,
1180         .start = mac80211_hwsim_start,
1181         .stop = mac80211_hwsim_stop,
1182         .add_interface = mac80211_hwsim_add_interface,
1183         .change_interface = mac80211_hwsim_change_interface,
1184         .remove_interface = mac80211_hwsim_remove_interface,
1185         .config = mac80211_hwsim_config,
1186         .configure_filter = mac80211_hwsim_configure_filter,
1187         .bss_info_changed = mac80211_hwsim_bss_info_changed,
1188         .sta_add = mac80211_hwsim_sta_add,
1189         .sta_remove = mac80211_hwsim_sta_remove,
1190         .sta_notify = mac80211_hwsim_sta_notify,
1191         .set_tim = mac80211_hwsim_set_tim,
1192         .conf_tx = mac80211_hwsim_conf_tx,
1193         .get_survey = mac80211_hwsim_get_survey,
1194         CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)
1195         .ampdu_action = mac80211_hwsim_ampdu_action,
1196         .sw_scan_start = mac80211_hwsim_sw_scan,
1197         .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
1198         .flush = mac80211_hwsim_flush,
1199 };
1200
1201
1202 static void mac80211_hwsim_free(void)
1203 {
1204         struct list_head tmplist, *i, *tmp;
1205         struct mac80211_hwsim_data *data, *tmpdata;
1206
1207         INIT_LIST_HEAD(&tmplist);
1208
1209         spin_lock_bh(&hwsim_radio_lock);
1210         list_for_each_safe(i, tmp, &hwsim_radios)
1211                 list_move(i, &tmplist);
1212         spin_unlock_bh(&hwsim_radio_lock);
1213
1214         list_for_each_entry_safe(data, tmpdata, &tmplist, list) {
1215                 debugfs_remove(data->debugfs_group);
1216                 debugfs_remove(data->debugfs_ps);
1217                 debugfs_remove(data->debugfs);
1218                 ieee80211_unregister_hw(data->hw);
1219                 device_unregister(data->dev);
1220                 ieee80211_free_hw(data->hw);
1221         }
1222         class_destroy(hwsim_class);
1223 }
1224
1225
1226 static struct device_driver mac80211_hwsim_driver = {
1227         .name = "mac80211_hwsim"
1228 };
1229
1230 static const struct net_device_ops hwsim_netdev_ops = {
1231         .ndo_start_xmit         = hwsim_mon_xmit,
1232         .ndo_change_mtu         = eth_change_mtu,
1233         .ndo_set_mac_address    = eth_mac_addr,
1234         .ndo_validate_addr      = eth_validate_addr,
1235 };
1236
1237 static void hwsim_mon_setup(struct net_device *dev)
1238 {
1239         dev->netdev_ops = &hwsim_netdev_ops;
1240         dev->destructor = free_netdev;
1241         ether_setup(dev);
1242         dev->tx_queue_len = 0;
1243         dev->type = ARPHRD_IEEE80211_RADIOTAP;
1244         memset(dev->dev_addr, 0, ETH_ALEN);
1245         dev->dev_addr[0] = 0x12;
1246 }
1247
1248
1249 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
1250 {
1251         struct mac80211_hwsim_data *data = dat;
1252         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1253         struct sk_buff *skb;
1254         struct ieee80211_pspoll *pspoll;
1255         int _pid;
1256
1257         if (!vp->assoc)
1258                 return;
1259
1260         wiphy_debug(data->hw->wiphy,
1261                     "%s: send PS-Poll to %pM for aid %d\n",
1262                     __func__, vp->bssid, vp->aid);
1263
1264         skb = dev_alloc_skb(sizeof(*pspoll));
1265         if (!skb)
1266                 return;
1267         pspoll = (void *) skb_put(skb, sizeof(*pspoll));
1268         pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
1269                                             IEEE80211_STYPE_PSPOLL |
1270                                             IEEE80211_FCTL_PM);
1271         pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
1272         memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
1273         memcpy(pspoll->ta, mac, ETH_ALEN);
1274
1275         /* wmediumd mode check */
1276         _pid = wmediumd_pid;
1277
1278         if (_pid)
1279                 return mac80211_hwsim_tx_frame_nl(data->hw, skb, _pid);
1280
1281         if (!mac80211_hwsim_tx_frame_no_nl(data->hw, skb))
1282                 printk(KERN_DEBUG "%s: PS-poll frame not ack'ed\n", __func__);
1283         dev_kfree_skb(skb);
1284 }
1285
1286
1287 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
1288                                 struct ieee80211_vif *vif, int ps)
1289 {
1290         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1291         struct sk_buff *skb;
1292         struct ieee80211_hdr *hdr;
1293         int _pid;
1294
1295         if (!vp->assoc)
1296                 return;
1297
1298         wiphy_debug(data->hw->wiphy,
1299                     "%s: send data::nullfunc to %pM ps=%d\n",
1300                     __func__, vp->bssid, ps);
1301
1302         skb = dev_alloc_skb(sizeof(*hdr));
1303         if (!skb)
1304                 return;
1305         hdr = (void *) skb_put(skb, sizeof(*hdr) - ETH_ALEN);
1306         hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
1307                                          IEEE80211_STYPE_NULLFUNC |
1308                                          (ps ? IEEE80211_FCTL_PM : 0));
1309         hdr->duration_id = cpu_to_le16(0);
1310         memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
1311         memcpy(hdr->addr2, mac, ETH_ALEN);
1312         memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
1313
1314         /* wmediumd mode check */
1315         _pid = wmediumd_pid;
1316
1317         if (_pid)
1318                 return mac80211_hwsim_tx_frame_nl(data->hw, skb, _pid);
1319
1320         if (!mac80211_hwsim_tx_frame_no_nl(data->hw, skb))
1321                 printk(KERN_DEBUG "%s: nullfunc frame not ack'ed\n", __func__);
1322         dev_kfree_skb(skb);
1323 }
1324
1325
1326 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
1327                                    struct ieee80211_vif *vif)
1328 {
1329         struct mac80211_hwsim_data *data = dat;
1330         hwsim_send_nullfunc(data, mac, vif, 1);
1331 }
1332
1333
1334 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
1335                                       struct ieee80211_vif *vif)
1336 {
1337         struct mac80211_hwsim_data *data = dat;
1338         hwsim_send_nullfunc(data, mac, vif, 0);
1339 }
1340
1341
1342 static int hwsim_fops_ps_read(void *dat, u64 *val)
1343 {
1344         struct mac80211_hwsim_data *data = dat;
1345         *val = data->ps;
1346         return 0;
1347 }
1348
1349 static int hwsim_fops_ps_write(void *dat, u64 val)
1350 {
1351         struct mac80211_hwsim_data *data = dat;
1352         enum ps_mode old_ps;
1353
1354         if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
1355             val != PS_MANUAL_POLL)
1356                 return -EINVAL;
1357
1358         old_ps = data->ps;
1359         data->ps = val;
1360
1361         if (val == PS_MANUAL_POLL) {
1362                 ieee80211_iterate_active_interfaces(data->hw,
1363                                                     hwsim_send_ps_poll, data);
1364                 data->ps_poll_pending = true;
1365         } else if (old_ps == PS_DISABLED && val != PS_DISABLED) {
1366                 ieee80211_iterate_active_interfaces(data->hw,
1367                                                     hwsim_send_nullfunc_ps,
1368                                                     data);
1369         } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
1370                 ieee80211_iterate_active_interfaces(data->hw,
1371                                                     hwsim_send_nullfunc_no_ps,
1372                                                     data);
1373         }
1374
1375         return 0;
1376 }
1377
1378 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
1379                         "%llu\n");
1380
1381
1382 static int hwsim_fops_group_read(void *dat, u64 *val)
1383 {
1384         struct mac80211_hwsim_data *data = dat;
1385         *val = data->group;
1386         return 0;
1387 }
1388
1389 static int hwsim_fops_group_write(void *dat, u64 val)
1390 {
1391         struct mac80211_hwsim_data *data = dat;
1392         data->group = val;
1393         return 0;
1394 }
1395
1396 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
1397                         hwsim_fops_group_read, hwsim_fops_group_write,
1398                         "%llx\n");
1399
1400 struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(
1401                              struct mac_address *addr)
1402 {
1403         struct mac80211_hwsim_data *data;
1404         bool _found = false;
1405
1406         spin_lock_bh(&hwsim_radio_lock);
1407         list_for_each_entry(data, &hwsim_radios, list) {
1408                 if (memcmp(data->addresses[1].addr, addr,
1409                           sizeof(struct mac_address)) == 0) {
1410                         _found = true;
1411                         break;
1412                 }
1413         }
1414         spin_unlock_bh(&hwsim_radio_lock);
1415
1416         if (!_found)
1417                 return NULL;
1418
1419         return data;
1420 }
1421
1422 static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
1423                                            struct genl_info *info)
1424 {
1425
1426         struct ieee80211_hdr *hdr;
1427         struct mac80211_hwsim_data *data2;
1428         struct ieee80211_tx_info *txi;
1429         struct hwsim_tx_rate *tx_attempts;
1430         struct sk_buff __user *ret_skb;
1431         struct sk_buff *skb, *tmp;
1432         struct mac_address *src;
1433         unsigned int hwsim_flags;
1434
1435         int i;
1436         bool found = false;
1437
1438         if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
1439            !info->attrs[HWSIM_ATTR_FLAGS] ||
1440            !info->attrs[HWSIM_ATTR_COOKIE] ||
1441            !info->attrs[HWSIM_ATTR_TX_INFO])
1442                 goto out;
1443
1444         src = (struct mac_address *)nla_data(
1445                                    info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
1446         hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
1447
1448         ret_skb = (struct sk_buff __user *)
1449                   (unsigned long) nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
1450
1451         data2 = get_hwsim_data_ref_from_addr(src);
1452
1453         if (data2 == NULL)
1454                 goto out;
1455
1456         /* look for the skb matching the cookie passed back from user */
1457         skb_queue_walk_safe(&data2->pending, skb, tmp) {
1458                 if (skb == ret_skb) {
1459                         skb_unlink(skb, &data2->pending);
1460                         found = true;
1461                         break;
1462                 }
1463         }
1464
1465         /* not found */
1466         if (!found)
1467                 goto out;
1468
1469         /* Tx info received because the frame was broadcasted on user space,
1470          so we get all the necessary info: tx attempts and skb control buff */
1471
1472         tx_attempts = (struct hwsim_tx_rate *)nla_data(
1473                        info->attrs[HWSIM_ATTR_TX_INFO]);
1474
1475         /* now send back TX status */
1476         txi = IEEE80211_SKB_CB(skb);
1477
1478         if (txi->control.vif)
1479                 hwsim_check_magic(txi->control.vif);
1480         if (txi->control.sta)
1481                 hwsim_check_sta_magic(txi->control.sta);
1482
1483         ieee80211_tx_info_clear_status(txi);
1484
1485         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
1486                 txi->status.rates[i].idx = tx_attempts[i].idx;
1487                 txi->status.rates[i].count = tx_attempts[i].count;
1488                 /*txi->status.rates[i].flags = 0;*/
1489         }
1490
1491         txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
1492
1493         if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
1494            (hwsim_flags & HWSIM_TX_STAT_ACK)) {
1495                 if (skb->len >= 16) {
1496                         hdr = (struct ieee80211_hdr *) skb->data;
1497                         mac80211_hwsim_monitor_ack(data2->hw, hdr->addr2);
1498                 }
1499         }
1500         ieee80211_tx_status_irqsafe(data2->hw, skb);
1501         return 0;
1502 out:
1503         return -EINVAL;
1504
1505 }
1506
1507 static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
1508                                           struct genl_info *info)
1509 {
1510
1511         struct mac80211_hwsim_data  *data2;
1512         struct ieee80211_rx_status rx_status;
1513         struct mac_address *dst;
1514         int frame_data_len;
1515         char *frame_data;
1516         struct sk_buff *skb = NULL;
1517
1518         if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
1519            !info->attrs[HWSIM_ATTR_FRAME] ||
1520            !info->attrs[HWSIM_ATTR_RX_RATE] ||
1521            !info->attrs[HWSIM_ATTR_SIGNAL])
1522                 goto out;
1523
1524         dst = (struct mac_address *)nla_data(
1525                                    info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
1526
1527         frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
1528         frame_data = (char *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
1529
1530         /* Allocate new skb here */
1531         skb = alloc_skb(frame_data_len, GFP_KERNEL);
1532         if (skb == NULL)
1533                 goto err;
1534
1535         if (frame_data_len <= IEEE80211_MAX_DATA_LEN) {
1536                 /* Copy the data */
1537                 memcpy(skb_put(skb, frame_data_len), frame_data,
1538                        frame_data_len);
1539         } else
1540                 goto err;
1541
1542         data2 = get_hwsim_data_ref_from_addr(dst);
1543
1544         if (data2 == NULL)
1545                 goto out;
1546
1547         /* check if radio is configured properly */
1548
1549         if (data2->idle || !data2->started || !data2->channel)
1550                 goto out;
1551
1552         /*A frame is received from user space*/
1553         memset(&rx_status, 0, sizeof(rx_status));
1554         rx_status.freq = data2->channel->center_freq;
1555         rx_status.band = data2->channel->band;
1556         rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
1557         rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
1558
1559         memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
1560         ieee80211_rx_irqsafe(data2->hw, skb);
1561
1562         return 0;
1563 err:
1564         printk(KERN_DEBUG "mac80211_hwsim: error occured in %s\n", __func__);
1565         goto out;
1566 out:
1567         dev_kfree_skb(skb);
1568         return -EINVAL;
1569 }
1570
1571 static int hwsim_register_received_nl(struct sk_buff *skb_2,
1572                                       struct genl_info *info)
1573 {
1574         if (info == NULL)
1575                 goto out;
1576
1577         wmediumd_pid = info->snd_pid;
1578
1579         printk(KERN_DEBUG "mac80211_hwsim: received a REGISTER, "
1580         "switching to wmediumd mode with pid %d\n", info->snd_pid);
1581
1582         return 0;
1583 out:
1584         printk(KERN_DEBUG "mac80211_hwsim: error occured in %s\n", __func__);
1585         return -EINVAL;
1586 }
1587
1588 /* Generic Netlink operations array */
1589 static struct genl_ops hwsim_ops[] = {
1590         {
1591                 .cmd = HWSIM_CMD_REGISTER,
1592                 .policy = hwsim_genl_policy,
1593                 .doit = hwsim_register_received_nl,
1594                 .flags = GENL_ADMIN_PERM,
1595         },
1596         {
1597                 .cmd = HWSIM_CMD_FRAME,
1598                 .policy = hwsim_genl_policy,
1599                 .doit = hwsim_cloned_frame_received_nl,
1600         },
1601         {
1602                 .cmd = HWSIM_CMD_TX_INFO_FRAME,
1603                 .policy = hwsim_genl_policy,
1604                 .doit = hwsim_tx_info_frame_received_nl,
1605         },
1606 };
1607
1608 static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
1609                                          unsigned long state,
1610                                          void *_notify)
1611 {
1612         struct netlink_notify *notify = _notify;
1613
1614         if (state != NETLINK_URELEASE)
1615                 return NOTIFY_DONE;
1616
1617         if (notify->pid == wmediumd_pid) {
1618                 printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
1619                        " socket, switching to perfect channel medium\n");
1620                 wmediumd_pid = 0;
1621         }
1622         return NOTIFY_DONE;
1623
1624 }
1625
1626 static struct notifier_block hwsim_netlink_notifier = {
1627         .notifier_call = mac80211_hwsim_netlink_notify,
1628 };
1629
1630 static int hwsim_init_netlink(void)
1631 {
1632         int rc;
1633         printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
1634
1635         wmediumd_pid = 0;
1636
1637         rc = genl_register_family_with_ops(&hwsim_genl_family,
1638                 hwsim_ops, ARRAY_SIZE(hwsim_ops));
1639         if (rc)
1640                 goto failure;
1641
1642         rc = netlink_register_notifier(&hwsim_netlink_notifier);
1643         if (rc)
1644                 goto failure;
1645
1646         return 0;
1647
1648 failure:
1649         printk(KERN_DEBUG "mac80211_hwsim: error occured in %s\n", __func__);
1650         return -EINVAL;
1651 }
1652
1653 static void hwsim_exit_netlink(void)
1654 {
1655         int ret;
1656
1657         printk(KERN_INFO "mac80211_hwsim: closing netlink\n");
1658         /* unregister the notifier */
1659         netlink_unregister_notifier(&hwsim_netlink_notifier);
1660         /* unregister the family */
1661         ret = genl_unregister_family(&hwsim_genl_family);
1662         if (ret)
1663                 printk(KERN_DEBUG "mac80211_hwsim: "
1664                        "unregister family %i\n", ret);
1665 }
1666
1667 static int __init init_mac80211_hwsim(void)
1668 {
1669         int i, err = 0;
1670         u8 addr[ETH_ALEN];
1671         struct mac80211_hwsim_data *data;
1672         struct ieee80211_hw *hw;
1673         enum ieee80211_band band;
1674
1675         if (radios < 1 || radios > 100)
1676                 return -EINVAL;
1677
1678         if (fake_hw_scan) {
1679                 mac80211_hwsim_ops.hw_scan = mac80211_hwsim_hw_scan;
1680                 mac80211_hwsim_ops.sw_scan_start = NULL;
1681                 mac80211_hwsim_ops.sw_scan_complete = NULL;
1682         }
1683
1684         spin_lock_init(&hwsim_radio_lock);
1685         INIT_LIST_HEAD(&hwsim_radios);
1686
1687         hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
1688         if (IS_ERR(hwsim_class))
1689                 return PTR_ERR(hwsim_class);
1690
1691         memset(addr, 0, ETH_ALEN);
1692         addr[0] = 0x02;
1693
1694         for (i = 0; i < radios; i++) {
1695                 printk(KERN_DEBUG "mac80211_hwsim: Initializing radio %d\n",
1696                        i);
1697                 hw = ieee80211_alloc_hw(sizeof(*data), &mac80211_hwsim_ops);
1698                 if (!hw) {
1699                         printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw "
1700                                "failed\n");
1701                         err = -ENOMEM;
1702                         goto failed;
1703                 }
1704                 data = hw->priv;
1705                 data->hw = hw;
1706
1707                 data->dev = device_create(hwsim_class, NULL, 0, hw,
1708                                           "hwsim%d", i);
1709                 if (IS_ERR(data->dev)) {
1710                         printk(KERN_DEBUG
1711                                "mac80211_hwsim: device_create "
1712                                "failed (%ld)\n", PTR_ERR(data->dev));
1713                         err = -ENOMEM;
1714                         goto failed_drvdata;
1715                 }
1716                 data->dev->driver = &mac80211_hwsim_driver;
1717                 skb_queue_head_init(&data->pending);
1718
1719                 SET_IEEE80211_DEV(hw, data->dev);
1720                 addr[3] = i >> 8;
1721                 addr[4] = i;
1722                 memcpy(data->addresses[0].addr, addr, ETH_ALEN);
1723                 memcpy(data->addresses[1].addr, addr, ETH_ALEN);
1724                 data->addresses[1].addr[0] |= 0x40;
1725                 hw->wiphy->n_addresses = 2;
1726                 hw->wiphy->addresses = data->addresses;
1727
1728                 if (fake_hw_scan) {
1729                         hw->wiphy->max_scan_ssids = 255;
1730                         hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
1731                 }
1732
1733                 hw->channel_change_time = 1;
1734                 hw->queues = 4;
1735                 hw->wiphy->interface_modes =
1736                         BIT(NL80211_IFTYPE_STATION) |
1737                         BIT(NL80211_IFTYPE_AP) |
1738                         BIT(NL80211_IFTYPE_P2P_CLIENT) |
1739                         BIT(NL80211_IFTYPE_P2P_GO) |
1740                         BIT(NL80211_IFTYPE_ADHOC) |
1741                         BIT(NL80211_IFTYPE_MESH_POINT);
1742
1743                 hw->flags = IEEE80211_HW_MFP_CAPABLE |
1744                             IEEE80211_HW_SIGNAL_DBM |
1745                             IEEE80211_HW_SUPPORTS_STATIC_SMPS |
1746                             IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
1747                             IEEE80211_HW_AMPDU_AGGREGATION;
1748
1749                 /* ask mac80211 to reserve space for magic */
1750                 hw->vif_data_size = sizeof(struct hwsim_vif_priv);
1751                 hw->sta_data_size = sizeof(struct hwsim_sta_priv);
1752
1753                 memcpy(data->channels_2ghz, hwsim_channels_2ghz,
1754                         sizeof(hwsim_channels_2ghz));
1755                 memcpy(data->channels_5ghz, hwsim_channels_5ghz,
1756                         sizeof(hwsim_channels_5ghz));
1757                 memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
1758
1759                 for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) {
1760                         struct ieee80211_supported_band *sband = &data->bands[band];
1761                         switch (band) {
1762                         case IEEE80211_BAND_2GHZ:
1763                                 sband->channels = data->channels_2ghz;
1764                                 sband->n_channels =
1765                                         ARRAY_SIZE(hwsim_channels_2ghz);
1766                                 sband->bitrates = data->rates;
1767                                 sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
1768                                 break;
1769                         case IEEE80211_BAND_5GHZ:
1770                                 sband->channels = data->channels_5ghz;
1771                                 sband->n_channels =
1772                                         ARRAY_SIZE(hwsim_channels_5ghz);
1773                                 sband->bitrates = data->rates + 4;
1774                                 sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
1775                                 break;
1776                         default:
1777                                 break;
1778                         }
1779
1780                         sband->ht_cap.ht_supported = true;
1781                         sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
1782                                 IEEE80211_HT_CAP_GRN_FLD |
1783                                 IEEE80211_HT_CAP_SGI_40 |
1784                                 IEEE80211_HT_CAP_DSSSCCK40;
1785                         sband->ht_cap.ampdu_factor = 0x3;
1786                         sband->ht_cap.ampdu_density = 0x6;
1787                         memset(&sband->ht_cap.mcs, 0,
1788                                sizeof(sband->ht_cap.mcs));
1789                         sband->ht_cap.mcs.rx_mask[0] = 0xff;
1790                         sband->ht_cap.mcs.rx_mask[1] = 0xff;
1791                         sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
1792
1793                         hw->wiphy->bands[band] = sband;
1794                 }
1795                 /* By default all radios are belonging to the first group */
1796                 data->group = 1;
1797                 mutex_init(&data->mutex);
1798
1799                 /* Enable frame retransmissions for lossy channels */
1800                 hw->max_rates = 4;
1801                 hw->max_rate_tries = 11;
1802
1803                 /* Work to be done prior to ieee80211_register_hw() */
1804                 switch (regtest) {
1805                 case HWSIM_REGTEST_DISABLED:
1806                 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
1807                 case HWSIM_REGTEST_DRIVER_REG_ALL:
1808                 case HWSIM_REGTEST_DIFF_COUNTRY:
1809                         /*
1810                          * Nothing to be done for driver regulatory domain
1811                          * hints prior to ieee80211_register_hw()
1812                          */
1813                         break;
1814                 case HWSIM_REGTEST_WORLD_ROAM:
1815                         if (i == 0) {
1816                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1817                                 wiphy_apply_custom_regulatory(hw->wiphy,
1818                                         &hwsim_world_regdom_custom_01);
1819                         }
1820                         break;
1821                 case HWSIM_REGTEST_CUSTOM_WORLD:
1822                         hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1823                         wiphy_apply_custom_regulatory(hw->wiphy,
1824                                 &hwsim_world_regdom_custom_01);
1825                         break;
1826                 case HWSIM_REGTEST_CUSTOM_WORLD_2:
1827                         if (i == 0) {
1828                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1829                                 wiphy_apply_custom_regulatory(hw->wiphy,
1830                                         &hwsim_world_regdom_custom_01);
1831                         } else if (i == 1) {
1832                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1833                                 wiphy_apply_custom_regulatory(hw->wiphy,
1834                                         &hwsim_world_regdom_custom_02);
1835                         }
1836                         break;
1837                 case HWSIM_REGTEST_STRICT_ALL:
1838                         hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1839                         break;
1840                 case HWSIM_REGTEST_STRICT_FOLLOW:
1841                 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
1842                         if (i == 0)
1843                                 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1844                         break;
1845                 case HWSIM_REGTEST_ALL:
1846                         if (i == 0) {
1847                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1848                                 wiphy_apply_custom_regulatory(hw->wiphy,
1849                                         &hwsim_world_regdom_custom_01);
1850                         } else if (i == 1) {
1851                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1852                                 wiphy_apply_custom_regulatory(hw->wiphy,
1853                                         &hwsim_world_regdom_custom_02);
1854                         } else if (i == 4)
1855                                 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1856                         break;
1857                 default:
1858                         break;
1859                 }
1860
1861                 /* give the regulatory workqueue a chance to run */
1862                 if (regtest)
1863                         schedule_timeout_interruptible(1);
1864                 err = ieee80211_register_hw(hw);
1865                 if (err < 0) {
1866                         printk(KERN_DEBUG "mac80211_hwsim: "
1867                                "ieee80211_register_hw failed (%d)\n", err);
1868                         goto failed_hw;
1869                 }
1870
1871                 /* Work to be done after to ieee80211_register_hw() */
1872                 switch (regtest) {
1873                 case HWSIM_REGTEST_WORLD_ROAM:
1874                 case HWSIM_REGTEST_DISABLED:
1875                         break;
1876                 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
1877                         if (!i)
1878                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1879                         break;
1880                 case HWSIM_REGTEST_DRIVER_REG_ALL:
1881                 case HWSIM_REGTEST_STRICT_ALL:
1882                         regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1883                         break;
1884                 case HWSIM_REGTEST_DIFF_COUNTRY:
1885                         if (i < ARRAY_SIZE(hwsim_alpha2s))
1886                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[i]);
1887                         break;
1888                 case HWSIM_REGTEST_CUSTOM_WORLD:
1889                 case HWSIM_REGTEST_CUSTOM_WORLD_2:
1890                         /*
1891                          * Nothing to be done for custom world regulatory
1892                          * domains after to ieee80211_register_hw
1893                          */
1894                         break;
1895                 case HWSIM_REGTEST_STRICT_FOLLOW:
1896                         if (i == 0)
1897                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1898                         break;
1899                 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
1900                         if (i == 0)
1901                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1902                         else if (i == 1)
1903                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
1904                         break;
1905                 case HWSIM_REGTEST_ALL:
1906                         if (i == 2)
1907                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1908                         else if (i == 3)
1909                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
1910                         else if (i == 4)
1911                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[2]);
1912                         break;
1913                 default:
1914                         break;
1915                 }
1916
1917                 wiphy_debug(hw->wiphy, "hwaddr %pm registered\n",
1918                             hw->wiphy->perm_addr);
1919
1920                 data->debugfs = debugfs_create_dir("hwsim",
1921                                                    hw->wiphy->debugfsdir);
1922                 data->debugfs_ps = debugfs_create_file("ps", 0666,
1923                                                        data->debugfs, data,
1924                                                        &hwsim_fops_ps);
1925                 data->debugfs_group = debugfs_create_file("group", 0666,
1926                                                         data->debugfs, data,
1927                                                         &hwsim_fops_group);
1928
1929                 setup_timer(&data->beacon_timer, mac80211_hwsim_beacon,
1930                             (unsigned long) hw);
1931
1932                 list_add_tail(&data->list, &hwsim_radios);
1933         }
1934
1935         hwsim_mon = alloc_netdev(0, "hwsim%d", hwsim_mon_setup);
1936         if (hwsim_mon == NULL)
1937                 goto failed;
1938
1939         rtnl_lock();
1940
1941         err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
1942         if (err < 0)
1943                 goto failed_mon;
1944
1945
1946         err = register_netdevice(hwsim_mon);
1947         if (err < 0)
1948                 goto failed_mon;
1949
1950         rtnl_unlock();
1951
1952         err = hwsim_init_netlink();
1953         if (err < 0)
1954                 goto failed_nl;
1955
1956         return 0;
1957
1958 failed_nl:
1959         printk(KERN_DEBUG "mac_80211_hwsim: failed initializing netlink\n");
1960         return err;
1961
1962 failed_mon:
1963         rtnl_unlock();
1964         free_netdev(hwsim_mon);
1965         mac80211_hwsim_free();
1966         return err;
1967
1968 failed_hw:
1969         device_unregister(data->dev);
1970 failed_drvdata:
1971         ieee80211_free_hw(hw);
1972 failed:
1973         mac80211_hwsim_free();
1974         return err;
1975 }
1976
1977
1978 static void __exit exit_mac80211_hwsim(void)
1979 {
1980         printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
1981
1982         hwsim_exit_netlink();
1983
1984         mac80211_hwsim_free();
1985         unregister_netdev(hwsim_mon);
1986 }
1987
1988
1989 module_init(init_mac80211_hwsim);
1990 module_exit(exit_mac80211_hwsim);