Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6
[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  *
5  * This program is free software; you can redistribute it and/or modify
6  * it under the terms of the GNU General Public License version 2 as
7  * published by the Free Software Foundation.
8  */
9
10 /*
11  * TODO:
12  * - IBSS mode simulation (Beacon transmission with competition for "air time")
13  * - RX filtering based on filter configuration (data->rx_filter)
14  */
15
16 #include <linux/list.h>
17 #include <linux/spinlock.h>
18 #include <net/dst.h>
19 #include <net/xfrm.h>
20 #include <net/mac80211.h>
21 #include <net/ieee80211_radiotap.h>
22 #include <linux/if_arp.h>
23 #include <linux/rtnetlink.h>
24 #include <linux/etherdevice.h>
25 #include <linux/debugfs.h>
26
27 MODULE_AUTHOR("Jouni Malinen");
28 MODULE_DESCRIPTION("Software simulator of 802.11 radio(s) for mac80211");
29 MODULE_LICENSE("GPL");
30
31 static int radios = 2;
32 module_param(radios, int, 0444);
33 MODULE_PARM_DESC(radios, "Number of simulated radios");
34
35 static bool fake_hw_scan;
36 module_param(fake_hw_scan, bool, 0444);
37 MODULE_PARM_DESC(fake_hw_scan, "Install fake (no-op) hw-scan handler");
38
39 /**
40  * enum hwsim_regtest - the type of regulatory tests we offer
41  *
42  * These are the different values you can use for the regtest
43  * module parameter. This is useful to help test world roaming
44  * and the driver regulatory_hint() call and combinations of these.
45  * If you want to do specific alpha2 regulatory domain tests simply
46  * use the userspace regulatory request as that will be respected as
47  * well without the need of this module parameter. This is designed
48  * only for testing the driver regulatory request, world roaming
49  * and all possible combinations.
50  *
51  * @HWSIM_REGTEST_DISABLED: No regulatory tests are performed,
52  *      this is the default value.
53  * @HWSIM_REGTEST_DRIVER_REG_FOLLOW: Used for testing the driver regulatory
54  *      hint, only one driver regulatory hint will be sent as such the
55  *      secondary radios are expected to follow.
56  * @HWSIM_REGTEST_DRIVER_REG_ALL: Used for testing the driver regulatory
57  *      request with all radios reporting the same regulatory domain.
58  * @HWSIM_REGTEST_DIFF_COUNTRY: Used for testing the drivers calling
59  *      different regulatory domains requests. Expected behaviour is for
60  *      an intersection to occur but each device will still use their
61  *      respective regulatory requested domains. Subsequent radios will
62  *      use the resulting intersection.
63  * @HWSIM_REGTEST_WORLD_ROAM: Used for testing the world roaming. We acomplish
64  *      this by using a custom beacon-capable regulatory domain for the first
65  *      radio. All other device world roam.
66  * @HWSIM_REGTEST_CUSTOM_WORLD: Used for testing the custom world regulatory
67  *      domain requests. All radios will adhere to this custom world regulatory
68  *      domain.
69  * @HWSIM_REGTEST_CUSTOM_WORLD_2: Used for testing 2 custom world regulatory
70  *      domain requests. The first radio will adhere to the first custom world
71  *      regulatory domain, the second one to the second custom world regulatory
72  *      domain. All other devices will world roam.
73  * @HWSIM_REGTEST_STRICT_FOLLOW_: Used for testing strict regulatory domain
74  *      settings, only the first radio will send a regulatory domain request
75  *      and use strict settings. The rest of the radios are expected to follow.
76  * @HWSIM_REGTEST_STRICT_ALL: Used for testing strict regulatory domain
77  *      settings. All radios will adhere to this.
78  * @HWSIM_REGTEST_STRICT_AND_DRIVER_REG: Used for testing strict regulatory
79  *      domain settings, combined with secondary driver regulatory domain
80  *      settings. The first radio will get a strict regulatory domain setting
81  *      using the first driver regulatory request and the second radio will use
82  *      non-strict settings using the second driver regulatory request. All
83  *      other devices should follow the intersection created between the
84  *      first two.
85  * @HWSIM_REGTEST_ALL: Used for testing every possible mix. You will need
86  *      at least 6 radios for a complete test. We will test in this order:
87  *      1 - driver custom world regulatory domain
88  *      2 - second custom world regulatory domain
89  *      3 - first driver regulatory domain request
90  *      4 - second driver regulatory domain request
91  *      5 - strict regulatory domain settings using the third driver regulatory
92  *          domain request
93  *      6 and on - should follow the intersection of the 3rd, 4rth and 5th radio
94  *                 regulatory requests.
95  */
96 enum hwsim_regtest {
97         HWSIM_REGTEST_DISABLED = 0,
98         HWSIM_REGTEST_DRIVER_REG_FOLLOW = 1,
99         HWSIM_REGTEST_DRIVER_REG_ALL = 2,
100         HWSIM_REGTEST_DIFF_COUNTRY = 3,
101         HWSIM_REGTEST_WORLD_ROAM = 4,
102         HWSIM_REGTEST_CUSTOM_WORLD = 5,
103         HWSIM_REGTEST_CUSTOM_WORLD_2 = 6,
104         HWSIM_REGTEST_STRICT_FOLLOW = 7,
105         HWSIM_REGTEST_STRICT_ALL = 8,
106         HWSIM_REGTEST_STRICT_AND_DRIVER_REG = 9,
107         HWSIM_REGTEST_ALL = 10,
108 };
109
110 /* Set to one of the HWSIM_REGTEST_* values above */
111 static int regtest = HWSIM_REGTEST_DISABLED;
112 module_param(regtest, int, 0444);
113 MODULE_PARM_DESC(regtest, "The type of regulatory test we want to run");
114
115 static const char *hwsim_alpha2s[] = {
116         "FI",
117         "AL",
118         "US",
119         "DE",
120         "JP",
121         "AL",
122 };
123
124 static const struct ieee80211_regdomain hwsim_world_regdom_custom_01 = {
125         .n_reg_rules = 4,
126         .alpha2 =  "99",
127         .reg_rules = {
128                 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
129                 REG_RULE(2484-10, 2484+10, 40, 0, 20, 0),
130                 REG_RULE(5150-10, 5240+10, 40, 0, 30, 0),
131                 REG_RULE(5745-10, 5825+10, 40, 0, 30, 0),
132         }
133 };
134
135 static const struct ieee80211_regdomain hwsim_world_regdom_custom_02 = {
136         .n_reg_rules = 2,
137         .alpha2 =  "99",
138         .reg_rules = {
139                 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
140                 REG_RULE(5725-10, 5850+10, 40, 0, 30,
141                         NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS),
142         }
143 };
144
145 struct hwsim_vif_priv {
146         u32 magic;
147         u8 bssid[ETH_ALEN];
148         bool assoc;
149         u16 aid;
150 };
151
152 #define HWSIM_VIF_MAGIC 0x69537748
153
154 static inline void hwsim_check_magic(struct ieee80211_vif *vif)
155 {
156         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
157         WARN_ON(vp->magic != HWSIM_VIF_MAGIC);
158 }
159
160 static inline void hwsim_set_magic(struct ieee80211_vif *vif)
161 {
162         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
163         vp->magic = HWSIM_VIF_MAGIC;
164 }
165
166 static inline void hwsim_clear_magic(struct ieee80211_vif *vif)
167 {
168         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
169         vp->magic = 0;
170 }
171
172 struct hwsim_sta_priv {
173         u32 magic;
174 };
175
176 #define HWSIM_STA_MAGIC 0x6d537748
177
178 static inline void hwsim_check_sta_magic(struct ieee80211_sta *sta)
179 {
180         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
181         WARN_ON(sp->magic != HWSIM_STA_MAGIC);
182 }
183
184 static inline void hwsim_set_sta_magic(struct ieee80211_sta *sta)
185 {
186         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
187         sp->magic = HWSIM_STA_MAGIC;
188 }
189
190 static inline void hwsim_clear_sta_magic(struct ieee80211_sta *sta)
191 {
192         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
193         sp->magic = 0;
194 }
195
196 static struct class *hwsim_class;
197
198 static struct net_device *hwsim_mon; /* global monitor netdev */
199
200 #define CHAN2G(_freq)  { \
201         .band = IEEE80211_BAND_2GHZ, \
202         .center_freq = (_freq), \
203         .hw_value = (_freq), \
204         .max_power = 20, \
205 }
206
207 #define CHAN5G(_freq) { \
208         .band = IEEE80211_BAND_5GHZ, \
209         .center_freq = (_freq), \
210         .hw_value = (_freq), \
211         .max_power = 20, \
212 }
213
214 static const struct ieee80211_channel hwsim_channels_2ghz[] = {
215         CHAN2G(2412), /* Channel 1 */
216         CHAN2G(2417), /* Channel 2 */
217         CHAN2G(2422), /* Channel 3 */
218         CHAN2G(2427), /* Channel 4 */
219         CHAN2G(2432), /* Channel 5 */
220         CHAN2G(2437), /* Channel 6 */
221         CHAN2G(2442), /* Channel 7 */
222         CHAN2G(2447), /* Channel 8 */
223         CHAN2G(2452), /* Channel 9 */
224         CHAN2G(2457), /* Channel 10 */
225         CHAN2G(2462), /* Channel 11 */
226         CHAN2G(2467), /* Channel 12 */
227         CHAN2G(2472), /* Channel 13 */
228         CHAN2G(2484), /* Channel 14 */
229 };
230
231 static const struct ieee80211_channel hwsim_channels_5ghz[] = {
232         CHAN5G(5180), /* Channel 36 */
233         CHAN5G(5200), /* Channel 40 */
234         CHAN5G(5220), /* Channel 44 */
235         CHAN5G(5240), /* Channel 48 */
236
237         CHAN5G(5260), /* Channel 52 */
238         CHAN5G(5280), /* Channel 56 */
239         CHAN5G(5300), /* Channel 60 */
240         CHAN5G(5320), /* Channel 64 */
241
242         CHAN5G(5500), /* Channel 100 */
243         CHAN5G(5520), /* Channel 104 */
244         CHAN5G(5540), /* Channel 108 */
245         CHAN5G(5560), /* Channel 112 */
246         CHAN5G(5580), /* Channel 116 */
247         CHAN5G(5600), /* Channel 120 */
248         CHAN5G(5620), /* Channel 124 */
249         CHAN5G(5640), /* Channel 128 */
250         CHAN5G(5660), /* Channel 132 */
251         CHAN5G(5680), /* Channel 136 */
252         CHAN5G(5700), /* Channel 140 */
253
254         CHAN5G(5745), /* Channel 149 */
255         CHAN5G(5765), /* Channel 153 */
256         CHAN5G(5785), /* Channel 157 */
257         CHAN5G(5805), /* Channel 161 */
258         CHAN5G(5825), /* Channel 165 */
259 };
260
261 static const struct ieee80211_rate hwsim_rates[] = {
262         { .bitrate = 10 },
263         { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
264         { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
265         { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
266         { .bitrate = 60 },
267         { .bitrate = 90 },
268         { .bitrate = 120 },
269         { .bitrate = 180 },
270         { .bitrate = 240 },
271         { .bitrate = 360 },
272         { .bitrate = 480 },
273         { .bitrate = 540 }
274 };
275
276 static spinlock_t hwsim_radio_lock;
277 static struct list_head hwsim_radios;
278
279 struct mac80211_hwsim_data {
280         struct list_head list;
281         struct ieee80211_hw *hw;
282         struct device *dev;
283         struct ieee80211_supported_band bands[2];
284         struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)];
285         struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)];
286         struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
287
288         struct mac_address addresses[2];
289
290         struct ieee80211_channel *channel;
291         unsigned long beacon_int; /* in jiffies unit */
292         unsigned int rx_filter;
293         bool started, idle;
294         struct timer_list beacon_timer;
295         enum ps_mode {
296                 PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
297         } ps;
298         bool ps_poll_pending;
299         struct dentry *debugfs;
300         struct dentry *debugfs_ps;
301
302         /*
303          * Only radios in the same group can communicate together (the
304          * channel has to match too). Each bit represents a group. A
305          * radio can be in more then one group.
306          */
307         u64 group;
308         struct dentry *debugfs_group;
309 };
310
311
312 struct hwsim_radiotap_hdr {
313         struct ieee80211_radiotap_header hdr;
314         u8 rt_flags;
315         u8 rt_rate;
316         __le16 rt_channel;
317         __le16 rt_chbitmask;
318 } __attribute__ ((packed));
319
320
321 static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
322                                         struct net_device *dev)
323 {
324         /* TODO: allow packet injection */
325         dev_kfree_skb(skb);
326         return NETDEV_TX_OK;
327 }
328
329
330 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
331                                       struct sk_buff *tx_skb)
332 {
333         struct mac80211_hwsim_data *data = hw->priv;
334         struct sk_buff *skb;
335         struct hwsim_radiotap_hdr *hdr;
336         u16 flags;
337         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
338         struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
339
340         if (!netif_running(hwsim_mon))
341                 return;
342
343         skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
344         if (skb == NULL)
345                 return;
346
347         hdr = (struct hwsim_radiotap_hdr *) skb_push(skb, sizeof(*hdr));
348         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
349         hdr->hdr.it_pad = 0;
350         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
351         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
352                                           (1 << IEEE80211_RADIOTAP_RATE) |
353                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
354         hdr->rt_flags = 0;
355         hdr->rt_rate = txrate->bitrate / 5;
356         hdr->rt_channel = cpu_to_le16(data->channel->center_freq);
357         flags = IEEE80211_CHAN_2GHZ;
358         if (txrate->flags & IEEE80211_RATE_ERP_G)
359                 flags |= IEEE80211_CHAN_OFDM;
360         else
361                 flags |= IEEE80211_CHAN_CCK;
362         hdr->rt_chbitmask = cpu_to_le16(flags);
363
364         skb->dev = hwsim_mon;
365         skb_set_mac_header(skb, 0);
366         skb->ip_summed = CHECKSUM_UNNECESSARY;
367         skb->pkt_type = PACKET_OTHERHOST;
368         skb->protocol = htons(ETH_P_802_2);
369         memset(skb->cb, 0, sizeof(skb->cb));
370         netif_rx(skb);
371 }
372
373
374 static void mac80211_hwsim_monitor_ack(struct ieee80211_hw *hw, const u8 *addr)
375 {
376         struct mac80211_hwsim_data *data = hw->priv;
377         struct sk_buff *skb;
378         struct hwsim_radiotap_hdr *hdr;
379         u16 flags;
380         struct ieee80211_hdr *hdr11;
381
382         if (!netif_running(hwsim_mon))
383                 return;
384
385         skb = dev_alloc_skb(100);
386         if (skb == NULL)
387                 return;
388
389         hdr = (struct hwsim_radiotap_hdr *) skb_put(skb, sizeof(*hdr));
390         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
391         hdr->hdr.it_pad = 0;
392         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
393         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
394                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
395         hdr->rt_flags = 0;
396         hdr->rt_rate = 0;
397         hdr->rt_channel = cpu_to_le16(data->channel->center_freq);
398         flags = IEEE80211_CHAN_2GHZ;
399         hdr->rt_chbitmask = cpu_to_le16(flags);
400
401         hdr11 = (struct ieee80211_hdr *) skb_put(skb, 10);
402         hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
403                                            IEEE80211_STYPE_ACK);
404         hdr11->duration_id = cpu_to_le16(0);
405         memcpy(hdr11->addr1, addr, ETH_ALEN);
406
407         skb->dev = hwsim_mon;
408         skb_set_mac_header(skb, 0);
409         skb->ip_summed = CHECKSUM_UNNECESSARY;
410         skb->pkt_type = PACKET_OTHERHOST;
411         skb->protocol = htons(ETH_P_802_2);
412         memset(skb->cb, 0, sizeof(skb->cb));
413         netif_rx(skb);
414 }
415
416
417 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
418                            struct sk_buff *skb)
419 {
420         switch (data->ps) {
421         case PS_DISABLED:
422                 return true;
423         case PS_ENABLED:
424                 return false;
425         case PS_AUTO_POLL:
426                 /* TODO: accept (some) Beacons by default and other frames only
427                  * if pending PS-Poll has been sent */
428                 return true;
429         case PS_MANUAL_POLL:
430                 /* Allow unicast frames to own address if there is a pending
431                  * PS-Poll */
432                 if (data->ps_poll_pending &&
433                     memcmp(data->hw->wiphy->perm_addr, skb->data + 4,
434                            ETH_ALEN) == 0) {
435                         data->ps_poll_pending = false;
436                         return true;
437                 }
438                 return false;
439         }
440
441         return true;
442 }
443
444
445 struct mac80211_hwsim_addr_match_data {
446         bool ret;
447         const u8 *addr;
448 };
449
450 static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
451                                      struct ieee80211_vif *vif)
452 {
453         struct mac80211_hwsim_addr_match_data *md = data;
454         if (memcmp(mac, md->addr, ETH_ALEN) == 0)
455                 md->ret = true;
456 }
457
458
459 static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
460                                       const u8 *addr)
461 {
462         struct mac80211_hwsim_addr_match_data md;
463
464         if (memcmp(addr, data->hw->wiphy->perm_addr, ETH_ALEN) == 0)
465                 return true;
466
467         md.ret = false;
468         md.addr = addr;
469         ieee80211_iterate_active_interfaces_atomic(data->hw,
470                                                    mac80211_hwsim_addr_iter,
471                                                    &md);
472
473         return md.ret;
474 }
475
476
477 static bool mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
478                                     struct sk_buff *skb)
479 {
480         struct mac80211_hwsim_data *data = hw->priv, *data2;
481         bool ack = false;
482         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
483         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
484         struct ieee80211_rx_status rx_status;
485
486         if (data->idle) {
487                 printk(KERN_DEBUG "%s: Trying to TX when idle - reject\n",
488                        wiphy_name(hw->wiphy));
489                 return false;
490         }
491
492         memset(&rx_status, 0, sizeof(rx_status));
493         /* TODO: set mactime */
494         rx_status.freq = data->channel->center_freq;
495         rx_status.band = data->channel->band;
496         rx_status.rate_idx = info->control.rates[0].idx;
497         /* TODO: simulate real signal strength (and optional packet loss) */
498         rx_status.signal = -50;
499
500         if (data->ps != PS_DISABLED)
501                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
502
503         /* release the skb's source info */
504         skb_orphan(skb);
505         skb_dst_drop(skb);
506         skb->mark = 0;
507         secpath_reset(skb);
508         nf_reset(skb);
509
510         /* Copy skb to all enabled radios that are on the current frequency */
511         spin_lock(&hwsim_radio_lock);
512         list_for_each_entry(data2, &hwsim_radios, list) {
513                 struct sk_buff *nskb;
514
515                 if (data == data2)
516                         continue;
517
518                 if (data2->idle || !data2->started ||
519                     !hwsim_ps_rx_ok(data2, skb) ||
520                     !data->channel || !data2->channel ||
521                     data->channel->center_freq != data2->channel->center_freq ||
522                     !(data->group & data2->group))
523                         continue;
524
525                 nskb = skb_copy(skb, GFP_ATOMIC);
526                 if (nskb == NULL)
527                         continue;
528
529                 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
530                         ack = true;
531                 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
532                 ieee80211_rx_irqsafe(data2->hw, nskb);
533         }
534         spin_unlock(&hwsim_radio_lock);
535
536         return ack;
537 }
538
539
540 static int mac80211_hwsim_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
541 {
542         bool ack;
543         struct ieee80211_tx_info *txi;
544
545         mac80211_hwsim_monitor_rx(hw, skb);
546
547         if (skb->len < 10) {
548                 /* Should not happen; just a sanity check for addr1 use */
549                 dev_kfree_skb(skb);
550                 return NETDEV_TX_OK;
551         }
552
553         ack = mac80211_hwsim_tx_frame(hw, skb);
554         if (ack && skb->len >= 16) {
555                 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
556                 mac80211_hwsim_monitor_ack(hw, hdr->addr2);
557         }
558
559         txi = IEEE80211_SKB_CB(skb);
560
561         if (txi->control.vif)
562                 hwsim_check_magic(txi->control.vif);
563         if (txi->control.sta)
564                 hwsim_check_sta_magic(txi->control.sta);
565
566         ieee80211_tx_info_clear_status(txi);
567         if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
568                 txi->flags |= IEEE80211_TX_STAT_ACK;
569         ieee80211_tx_status_irqsafe(hw, skb);
570         return NETDEV_TX_OK;
571 }
572
573
574 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
575 {
576         struct mac80211_hwsim_data *data = hw->priv;
577         printk(KERN_DEBUG "%s:%s\n", wiphy_name(hw->wiphy), __func__);
578         data->started = 1;
579         return 0;
580 }
581
582
583 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
584 {
585         struct mac80211_hwsim_data *data = hw->priv;
586         data->started = 0;
587         del_timer(&data->beacon_timer);
588         printk(KERN_DEBUG "%s:%s\n", wiphy_name(hw->wiphy), __func__);
589 }
590
591
592 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
593                                         struct ieee80211_vif *vif)
594 {
595         printk(KERN_DEBUG "%s:%s (type=%d mac_addr=%pM)\n",
596                wiphy_name(hw->wiphy), __func__, vif->type,
597                vif->addr);
598         hwsim_set_magic(vif);
599         return 0;
600 }
601
602
603 static void mac80211_hwsim_remove_interface(
604         struct ieee80211_hw *hw, struct ieee80211_vif *vif)
605 {
606         printk(KERN_DEBUG "%s:%s (type=%d mac_addr=%pM)\n",
607                wiphy_name(hw->wiphy), __func__, vif->type,
608                vif->addr);
609         hwsim_check_magic(vif);
610         hwsim_clear_magic(vif);
611 }
612
613
614 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
615                                      struct ieee80211_vif *vif)
616 {
617         struct ieee80211_hw *hw = arg;
618         struct sk_buff *skb;
619         struct ieee80211_tx_info *info;
620
621         hwsim_check_magic(vif);
622
623         if (vif->type != NL80211_IFTYPE_AP &&
624             vif->type != NL80211_IFTYPE_MESH_POINT)
625                 return;
626
627         skb = ieee80211_beacon_get(hw, vif);
628         if (skb == NULL)
629                 return;
630         info = IEEE80211_SKB_CB(skb);
631
632         mac80211_hwsim_monitor_rx(hw, skb);
633         mac80211_hwsim_tx_frame(hw, skb);
634         dev_kfree_skb(skb);
635 }
636
637
638 static void mac80211_hwsim_beacon(unsigned long arg)
639 {
640         struct ieee80211_hw *hw = (struct ieee80211_hw *) arg;
641         struct mac80211_hwsim_data *data = hw->priv;
642
643         if (!data->started)
644                 return;
645
646         ieee80211_iterate_active_interfaces_atomic(
647                 hw, mac80211_hwsim_beacon_tx, hw);
648
649         data->beacon_timer.expires = jiffies + data->beacon_int;
650         add_timer(&data->beacon_timer);
651 }
652
653
654 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
655 {
656         struct mac80211_hwsim_data *data = hw->priv;
657         struct ieee80211_conf *conf = &hw->conf;
658         static const char *chantypes[4] = {
659                 [NL80211_CHAN_NO_HT] = "noht",
660                 [NL80211_CHAN_HT20] = "ht20",
661                 [NL80211_CHAN_HT40MINUS] = "ht40-",
662                 [NL80211_CHAN_HT40PLUS] = "ht40+",
663         };
664         static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
665                 [IEEE80211_SMPS_AUTOMATIC] = "auto",
666                 [IEEE80211_SMPS_OFF] = "off",
667                 [IEEE80211_SMPS_STATIC] = "static",
668                 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
669         };
670
671         printk(KERN_DEBUG "%s:%s (freq=%d/%s idle=%d ps=%d smps=%s)\n",
672                wiphy_name(hw->wiphy), __func__,
673                conf->channel->center_freq,
674                chantypes[conf->channel_type],
675                !!(conf->flags & IEEE80211_CONF_IDLE),
676                !!(conf->flags & IEEE80211_CONF_PS),
677                smps_modes[conf->smps_mode]);
678
679         data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
680
681         data->channel = conf->channel;
682         if (!data->started || !data->beacon_int)
683                 del_timer(&data->beacon_timer);
684         else
685                 mod_timer(&data->beacon_timer, jiffies + data->beacon_int);
686
687         return 0;
688 }
689
690
691 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
692                                             unsigned int changed_flags,
693                                             unsigned int *total_flags,u64 multicast)
694 {
695         struct mac80211_hwsim_data *data = hw->priv;
696
697         printk(KERN_DEBUG "%s:%s\n", wiphy_name(hw->wiphy), __func__);
698
699         data->rx_filter = 0;
700         if (*total_flags & FIF_PROMISC_IN_BSS)
701                 data->rx_filter |= FIF_PROMISC_IN_BSS;
702         if (*total_flags & FIF_ALLMULTI)
703                 data->rx_filter |= FIF_ALLMULTI;
704
705         *total_flags = data->rx_filter;
706 }
707
708 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
709                                             struct ieee80211_vif *vif,
710                                             struct ieee80211_bss_conf *info,
711                                             u32 changed)
712 {
713         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
714         struct mac80211_hwsim_data *data = hw->priv;
715
716         hwsim_check_magic(vif);
717
718         printk(KERN_DEBUG "%s:%s(changed=0x%x)\n",
719                wiphy_name(hw->wiphy), __func__, changed);
720
721         if (changed & BSS_CHANGED_BSSID) {
722                 printk(KERN_DEBUG "%s:%s: BSSID changed: %pM\n",
723                        wiphy_name(hw->wiphy), __func__,
724                        info->bssid);
725                 memcpy(vp->bssid, info->bssid, ETH_ALEN);
726         }
727
728         if (changed & BSS_CHANGED_ASSOC) {
729                 printk(KERN_DEBUG "  %s: ASSOC: assoc=%d aid=%d\n",
730                        wiphy_name(hw->wiphy), info->assoc, info->aid);
731                 vp->assoc = info->assoc;
732                 vp->aid = info->aid;
733         }
734
735         if (changed & BSS_CHANGED_BEACON_INT) {
736                 printk(KERN_DEBUG "  %s: BCNINT: %d\n",
737                        wiphy_name(hw->wiphy), info->beacon_int);
738                 data->beacon_int = 1024 * info->beacon_int / 1000 * HZ / 1000;
739                 if (WARN_ON(!data->beacon_int))
740                         data->beacon_int = 1;
741                 if (data->started)
742                         mod_timer(&data->beacon_timer,
743                                   jiffies + data->beacon_int);
744         }
745
746         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
747                 printk(KERN_DEBUG "  %s: ERP_CTS_PROT: %d\n",
748                        wiphy_name(hw->wiphy), info->use_cts_prot);
749         }
750
751         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
752                 printk(KERN_DEBUG "  %s: ERP_PREAMBLE: %d\n",
753                        wiphy_name(hw->wiphy), info->use_short_preamble);
754         }
755
756         if (changed & BSS_CHANGED_ERP_SLOT) {
757                 printk(KERN_DEBUG "  %s: ERP_SLOT: %d\n",
758                        wiphy_name(hw->wiphy), info->use_short_slot);
759         }
760
761         if (changed & BSS_CHANGED_HT) {
762                 printk(KERN_DEBUG "  %s: HT: op_mode=0x%x\n",
763                        wiphy_name(hw->wiphy),
764                        info->ht_operation_mode);
765         }
766
767         if (changed & BSS_CHANGED_BASIC_RATES) {
768                 printk(KERN_DEBUG "  %s: BASIC_RATES: 0x%llx\n",
769                        wiphy_name(hw->wiphy),
770                        (unsigned long long) info->basic_rates);
771         }
772 }
773
774 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
775                                   struct ieee80211_vif *vif,
776                                   struct ieee80211_sta *sta)
777 {
778         hwsim_check_magic(vif);
779         hwsim_set_sta_magic(sta);
780
781         return 0;
782 }
783
784 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
785                                      struct ieee80211_vif *vif,
786                                      struct ieee80211_sta *sta)
787 {
788         hwsim_check_magic(vif);
789         hwsim_clear_sta_magic(sta);
790
791         return 0;
792 }
793
794 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
795                                       struct ieee80211_vif *vif,
796                                       enum sta_notify_cmd cmd,
797                                       struct ieee80211_sta *sta)
798 {
799         hwsim_check_magic(vif);
800
801         switch (cmd) {
802         case STA_NOTIFY_SLEEP:
803         case STA_NOTIFY_AWAKE:
804                 /* TODO: make good use of these flags */
805                 break;
806         default:
807                 WARN(1, "Invalid sta notify: %d\n", cmd);
808                 break;
809         }
810 }
811
812 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
813                                   struct ieee80211_sta *sta,
814                                   bool set)
815 {
816         hwsim_check_sta_magic(sta);
817         return 0;
818 }
819
820 static int mac80211_hwsim_conf_tx(
821         struct ieee80211_hw *hw, u16 queue,
822         const struct ieee80211_tx_queue_params *params)
823 {
824         printk(KERN_DEBUG "%s:%s (queue=%d txop=%d cw_min=%d cw_max=%d "
825                "aifs=%d)\n",
826                wiphy_name(hw->wiphy), __func__, queue,
827                params->txop, params->cw_min, params->cw_max, params->aifs);
828         return 0;
829 }
830
831 #ifdef CONFIG_NL80211_TESTMODE
832 /*
833  * This section contains example code for using netlink
834  * attributes with the testmode command in nl80211.
835  */
836
837 /* These enums need to be kept in sync with userspace */
838 enum hwsim_testmode_attr {
839         __HWSIM_TM_ATTR_INVALID = 0,
840         HWSIM_TM_ATTR_CMD       = 1,
841         HWSIM_TM_ATTR_PS        = 2,
842
843         /* keep last */
844         __HWSIM_TM_ATTR_AFTER_LAST,
845         HWSIM_TM_ATTR_MAX       = __HWSIM_TM_ATTR_AFTER_LAST - 1
846 };
847
848 enum hwsim_testmode_cmd {
849         HWSIM_TM_CMD_SET_PS             = 0,
850         HWSIM_TM_CMD_GET_PS             = 1,
851 };
852
853 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
854         [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
855         [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
856 };
857
858 static int hwsim_fops_ps_write(void *dat, u64 val);
859
860 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
861                                        void *data, int len)
862 {
863         struct mac80211_hwsim_data *hwsim = hw->priv;
864         struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
865         struct sk_buff *skb;
866         int err, ps;
867
868         err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
869                         hwsim_testmode_policy);
870         if (err)
871                 return err;
872
873         if (!tb[HWSIM_TM_ATTR_CMD])
874                 return -EINVAL;
875
876         switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
877         case HWSIM_TM_CMD_SET_PS:
878                 if (!tb[HWSIM_TM_ATTR_PS])
879                         return -EINVAL;
880                 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
881                 return hwsim_fops_ps_write(hwsim, ps);
882         case HWSIM_TM_CMD_GET_PS:
883                 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
884                                                 nla_total_size(sizeof(u32)));
885                 if (!skb)
886                         return -ENOMEM;
887                 NLA_PUT_U32(skb, HWSIM_TM_ATTR_PS, hwsim->ps);
888                 return cfg80211_testmode_reply(skb);
889         default:
890                 return -EOPNOTSUPP;
891         }
892
893  nla_put_failure:
894         kfree_skb(skb);
895         return -ENOBUFS;
896 }
897 #endif
898
899 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
900                                        struct ieee80211_vif *vif,
901                                        enum ieee80211_ampdu_mlme_action action,
902                                        struct ieee80211_sta *sta, u16 tid, u16 *ssn)
903 {
904         switch (action) {
905         case IEEE80211_AMPDU_TX_START:
906                 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
907                 break;
908         case IEEE80211_AMPDU_TX_STOP:
909                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
910                 break;
911         case IEEE80211_AMPDU_TX_OPERATIONAL:
912                 break;
913         case IEEE80211_AMPDU_RX_START:
914         case IEEE80211_AMPDU_RX_STOP:
915                 break;
916         default:
917                 return -EOPNOTSUPP;
918         }
919
920         return 0;
921 }
922
923 static void mac80211_hwsim_flush(struct ieee80211_hw *hw, bool drop)
924 {
925         /*
926          * In this special case, there's nothing we need to
927          * do because hwsim does transmission synchronously.
928          * In the future, when it does transmissions via
929          * userspace, we may need to do something.
930          */
931 }
932
933 struct hw_scan_done {
934         struct delayed_work w;
935         struct ieee80211_hw *hw;
936 };
937
938 static void hw_scan_done(struct work_struct *work)
939 {
940         struct hw_scan_done *hsd =
941                 container_of(work, struct hw_scan_done, w.work);
942
943         ieee80211_scan_completed(hsd->hw, false);
944         kfree(hsd);
945 }
946
947 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
948                                   struct cfg80211_scan_request *req)
949 {
950         struct hw_scan_done *hsd = kzalloc(sizeof(*hsd), GFP_KERNEL);
951         int i;
952
953         if (!hsd)
954                 return -ENOMEM;
955
956         hsd->hw = hw;
957         INIT_DELAYED_WORK(&hsd->w, hw_scan_done);
958
959         printk(KERN_DEBUG "hwsim scan request\n");
960         for (i = 0; i < req->n_channels; i++)
961                 printk(KERN_DEBUG "hwsim scan freq %d\n",
962                         req->channels[i]->center_freq);
963
964         ieee80211_queue_delayed_work(hw, &hsd->w, 2 * HZ);
965
966         return 0;
967 }
968
969 static struct ieee80211_ops mac80211_hwsim_ops =
970 {
971         .tx = mac80211_hwsim_tx,
972         .start = mac80211_hwsim_start,
973         .stop = mac80211_hwsim_stop,
974         .add_interface = mac80211_hwsim_add_interface,
975         .remove_interface = mac80211_hwsim_remove_interface,
976         .config = mac80211_hwsim_config,
977         .configure_filter = mac80211_hwsim_configure_filter,
978         .bss_info_changed = mac80211_hwsim_bss_info_changed,
979         .sta_add = mac80211_hwsim_sta_add,
980         .sta_remove = mac80211_hwsim_sta_remove,
981         .sta_notify = mac80211_hwsim_sta_notify,
982         .set_tim = mac80211_hwsim_set_tim,
983         .conf_tx = mac80211_hwsim_conf_tx,
984         CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)
985         .ampdu_action = mac80211_hwsim_ampdu_action,
986         .flush = mac80211_hwsim_flush,
987 };
988
989
990 static void mac80211_hwsim_free(void)
991 {
992         struct list_head tmplist, *i, *tmp;
993         struct mac80211_hwsim_data *data, *tmpdata;
994
995         INIT_LIST_HEAD(&tmplist);
996
997         spin_lock_bh(&hwsim_radio_lock);
998         list_for_each_safe(i, tmp, &hwsim_radios)
999                 list_move(i, &tmplist);
1000         spin_unlock_bh(&hwsim_radio_lock);
1001
1002         list_for_each_entry_safe(data, tmpdata, &tmplist, list) {
1003                 debugfs_remove(data->debugfs_group);
1004                 debugfs_remove(data->debugfs_ps);
1005                 debugfs_remove(data->debugfs);
1006                 ieee80211_unregister_hw(data->hw);
1007                 device_unregister(data->dev);
1008                 ieee80211_free_hw(data->hw);
1009         }
1010         class_destroy(hwsim_class);
1011 }
1012
1013
1014 static struct device_driver mac80211_hwsim_driver = {
1015         .name = "mac80211_hwsim"
1016 };
1017
1018 static const struct net_device_ops hwsim_netdev_ops = {
1019         .ndo_start_xmit         = hwsim_mon_xmit,
1020         .ndo_change_mtu         = eth_change_mtu,
1021         .ndo_set_mac_address    = eth_mac_addr,
1022         .ndo_validate_addr      = eth_validate_addr,
1023 };
1024
1025 static void hwsim_mon_setup(struct net_device *dev)
1026 {
1027         dev->netdev_ops = &hwsim_netdev_ops;
1028         dev->destructor = free_netdev;
1029         ether_setup(dev);
1030         dev->tx_queue_len = 0;
1031         dev->type = ARPHRD_IEEE80211_RADIOTAP;
1032         memset(dev->dev_addr, 0, ETH_ALEN);
1033         dev->dev_addr[0] = 0x12;
1034 }
1035
1036
1037 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
1038 {
1039         struct mac80211_hwsim_data *data = dat;
1040         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1041         struct sk_buff *skb;
1042         struct ieee80211_pspoll *pspoll;
1043
1044         if (!vp->assoc)
1045                 return;
1046
1047         printk(KERN_DEBUG "%s:%s: send PS-Poll to %pM for aid %d\n",
1048                wiphy_name(data->hw->wiphy), __func__, vp->bssid, vp->aid);
1049
1050         skb = dev_alloc_skb(sizeof(*pspoll));
1051         if (!skb)
1052                 return;
1053         pspoll = (void *) skb_put(skb, sizeof(*pspoll));
1054         pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
1055                                             IEEE80211_STYPE_PSPOLL |
1056                                             IEEE80211_FCTL_PM);
1057         pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
1058         memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
1059         memcpy(pspoll->ta, mac, ETH_ALEN);
1060         if (!mac80211_hwsim_tx_frame(data->hw, skb))
1061                 printk(KERN_DEBUG "%s: PS-Poll frame not ack'ed\n", __func__);
1062         dev_kfree_skb(skb);
1063 }
1064
1065
1066 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
1067                                 struct ieee80211_vif *vif, int ps)
1068 {
1069         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1070         struct sk_buff *skb;
1071         struct ieee80211_hdr *hdr;
1072
1073         if (!vp->assoc)
1074                 return;
1075
1076         printk(KERN_DEBUG "%s:%s: send data::nullfunc to %pM ps=%d\n",
1077                wiphy_name(data->hw->wiphy), __func__, vp->bssid, ps);
1078
1079         skb = dev_alloc_skb(sizeof(*hdr));
1080         if (!skb)
1081                 return;
1082         hdr = (void *) skb_put(skb, sizeof(*hdr) - ETH_ALEN);
1083         hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
1084                                          IEEE80211_STYPE_NULLFUNC |
1085                                          (ps ? IEEE80211_FCTL_PM : 0));
1086         hdr->duration_id = cpu_to_le16(0);
1087         memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
1088         memcpy(hdr->addr2, mac, ETH_ALEN);
1089         memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
1090         if (!mac80211_hwsim_tx_frame(data->hw, skb))
1091                 printk(KERN_DEBUG "%s: nullfunc frame not ack'ed\n", __func__);
1092         dev_kfree_skb(skb);
1093 }
1094
1095
1096 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
1097                                    struct ieee80211_vif *vif)
1098 {
1099         struct mac80211_hwsim_data *data = dat;
1100         hwsim_send_nullfunc(data, mac, vif, 1);
1101 }
1102
1103
1104 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
1105                                       struct ieee80211_vif *vif)
1106 {
1107         struct mac80211_hwsim_data *data = dat;
1108         hwsim_send_nullfunc(data, mac, vif, 0);
1109 }
1110
1111
1112 static int hwsim_fops_ps_read(void *dat, u64 *val)
1113 {
1114         struct mac80211_hwsim_data *data = dat;
1115         *val = data->ps;
1116         return 0;
1117 }
1118
1119 static int hwsim_fops_ps_write(void *dat, u64 val)
1120 {
1121         struct mac80211_hwsim_data *data = dat;
1122         enum ps_mode old_ps;
1123
1124         if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
1125             val != PS_MANUAL_POLL)
1126                 return -EINVAL;
1127
1128         old_ps = data->ps;
1129         data->ps = val;
1130
1131         if (val == PS_MANUAL_POLL) {
1132                 ieee80211_iterate_active_interfaces(data->hw,
1133                                                     hwsim_send_ps_poll, data);
1134                 data->ps_poll_pending = true;
1135         } else if (old_ps == PS_DISABLED && val != PS_DISABLED) {
1136                 ieee80211_iterate_active_interfaces(data->hw,
1137                                                     hwsim_send_nullfunc_ps,
1138                                                     data);
1139         } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
1140                 ieee80211_iterate_active_interfaces(data->hw,
1141                                                     hwsim_send_nullfunc_no_ps,
1142                                                     data);
1143         }
1144
1145         return 0;
1146 }
1147
1148 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
1149                         "%llu\n");
1150
1151
1152 static int hwsim_fops_group_read(void *dat, u64 *val)
1153 {
1154         struct mac80211_hwsim_data *data = dat;
1155         *val = data->group;
1156         return 0;
1157 }
1158
1159 static int hwsim_fops_group_write(void *dat, u64 val)
1160 {
1161         struct mac80211_hwsim_data *data = dat;
1162         data->group = val;
1163         return 0;
1164 }
1165
1166 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
1167                         hwsim_fops_group_read, hwsim_fops_group_write,
1168                         "%llx\n");
1169
1170 static int __init init_mac80211_hwsim(void)
1171 {
1172         int i, err = 0;
1173         u8 addr[ETH_ALEN];
1174         struct mac80211_hwsim_data *data;
1175         struct ieee80211_hw *hw;
1176         enum ieee80211_band band;
1177
1178         if (radios < 1 || radios > 100)
1179                 return -EINVAL;
1180
1181         if (fake_hw_scan)
1182                 mac80211_hwsim_ops.hw_scan = mac80211_hwsim_hw_scan;
1183
1184         spin_lock_init(&hwsim_radio_lock);
1185         INIT_LIST_HEAD(&hwsim_radios);
1186
1187         hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
1188         if (IS_ERR(hwsim_class))
1189                 return PTR_ERR(hwsim_class);
1190
1191         memset(addr, 0, ETH_ALEN);
1192         addr[0] = 0x02;
1193
1194         for (i = 0; i < radios; i++) {
1195                 printk(KERN_DEBUG "mac80211_hwsim: Initializing radio %d\n",
1196                        i);
1197                 hw = ieee80211_alloc_hw(sizeof(*data), &mac80211_hwsim_ops);
1198                 if (!hw) {
1199                         printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw "
1200                                "failed\n");
1201                         err = -ENOMEM;
1202                         goto failed;
1203                 }
1204                 data = hw->priv;
1205                 data->hw = hw;
1206
1207                 data->dev = device_create(hwsim_class, NULL, 0, hw,
1208                                           "hwsim%d", i);
1209                 if (IS_ERR(data->dev)) {
1210                         printk(KERN_DEBUG
1211                                "mac80211_hwsim: device_create "
1212                                "failed (%ld)\n", PTR_ERR(data->dev));
1213                         err = -ENOMEM;
1214                         goto failed_drvdata;
1215                 }
1216                 data->dev->driver = &mac80211_hwsim_driver;
1217
1218                 SET_IEEE80211_DEV(hw, data->dev);
1219                 addr[3] = i >> 8;
1220                 addr[4] = i;
1221                 memcpy(data->addresses[0].addr, addr, ETH_ALEN);
1222                 memcpy(data->addresses[1].addr, addr, ETH_ALEN);
1223                 data->addresses[1].addr[0] |= 0x40;
1224                 hw->wiphy->n_addresses = 2;
1225                 hw->wiphy->addresses = data->addresses;
1226
1227                 hw->channel_change_time = 1;
1228                 hw->queues = 4;
1229                 hw->wiphy->interface_modes =
1230                         BIT(NL80211_IFTYPE_STATION) |
1231                         BIT(NL80211_IFTYPE_AP) |
1232                         BIT(NL80211_IFTYPE_MESH_POINT);
1233
1234                 hw->flags = IEEE80211_HW_MFP_CAPABLE |
1235                             IEEE80211_HW_SIGNAL_DBM |
1236                             IEEE80211_HW_SUPPORTS_STATIC_SMPS |
1237                             IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS;
1238
1239                 /* ask mac80211 to reserve space for magic */
1240                 hw->vif_data_size = sizeof(struct hwsim_vif_priv);
1241                 hw->sta_data_size = sizeof(struct hwsim_sta_priv);
1242
1243                 memcpy(data->channels_2ghz, hwsim_channels_2ghz,
1244                         sizeof(hwsim_channels_2ghz));
1245                 memcpy(data->channels_5ghz, hwsim_channels_5ghz,
1246                         sizeof(hwsim_channels_5ghz));
1247                 memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
1248
1249                 for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) {
1250                         struct ieee80211_supported_band *sband = &data->bands[band];
1251                         switch (band) {
1252                         case IEEE80211_BAND_2GHZ:
1253                                 sband->channels = data->channels_2ghz;
1254                                 sband->n_channels =
1255                                         ARRAY_SIZE(hwsim_channels_2ghz);
1256                                 sband->bitrates = data->rates;
1257                                 sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
1258                                 break;
1259                         case IEEE80211_BAND_5GHZ:
1260                                 sband->channels = data->channels_5ghz;
1261                                 sband->n_channels =
1262                                         ARRAY_SIZE(hwsim_channels_5ghz);
1263                                 sband->bitrates = data->rates + 4;
1264                                 sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
1265                                 break;
1266                         default:
1267                                 break;
1268                         }
1269
1270                         sband->ht_cap.ht_supported = true;
1271                         sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
1272                                 IEEE80211_HT_CAP_GRN_FLD |
1273                                 IEEE80211_HT_CAP_SGI_40 |
1274                                 IEEE80211_HT_CAP_DSSSCCK40;
1275                         sband->ht_cap.ampdu_factor = 0x3;
1276                         sband->ht_cap.ampdu_density = 0x6;
1277                         memset(&sband->ht_cap.mcs, 0,
1278                                sizeof(sband->ht_cap.mcs));
1279                         sband->ht_cap.mcs.rx_mask[0] = 0xff;
1280                         sband->ht_cap.mcs.rx_mask[1] = 0xff;
1281                         sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
1282
1283                         hw->wiphy->bands[band] = sband;
1284                 }
1285                 /* By default all radios are belonging to the first group */
1286                 data->group = 1;
1287
1288                 /* Work to be done prior to ieee80211_register_hw() */
1289                 switch (regtest) {
1290                 case HWSIM_REGTEST_DISABLED:
1291                 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
1292                 case HWSIM_REGTEST_DRIVER_REG_ALL:
1293                 case HWSIM_REGTEST_DIFF_COUNTRY:
1294                         /*
1295                          * Nothing to be done for driver regulatory domain
1296                          * hints prior to ieee80211_register_hw()
1297                          */
1298                         break;
1299                 case HWSIM_REGTEST_WORLD_ROAM:
1300                         if (i == 0) {
1301                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1302                                 wiphy_apply_custom_regulatory(hw->wiphy,
1303                                         &hwsim_world_regdom_custom_01);
1304                         }
1305                         break;
1306                 case HWSIM_REGTEST_CUSTOM_WORLD:
1307                         hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1308                         wiphy_apply_custom_regulatory(hw->wiphy,
1309                                 &hwsim_world_regdom_custom_01);
1310                         break;
1311                 case HWSIM_REGTEST_CUSTOM_WORLD_2:
1312                         if (i == 0) {
1313                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1314                                 wiphy_apply_custom_regulatory(hw->wiphy,
1315                                         &hwsim_world_regdom_custom_01);
1316                         } else if (i == 1) {
1317                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1318                                 wiphy_apply_custom_regulatory(hw->wiphy,
1319                                         &hwsim_world_regdom_custom_02);
1320                         }
1321                         break;
1322                 case HWSIM_REGTEST_STRICT_ALL:
1323                         hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1324                         break;
1325                 case HWSIM_REGTEST_STRICT_FOLLOW:
1326                 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
1327                         if (i == 0)
1328                                 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1329                         break;
1330                 case HWSIM_REGTEST_ALL:
1331                         if (i == 0) {
1332                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1333                                 wiphy_apply_custom_regulatory(hw->wiphy,
1334                                         &hwsim_world_regdom_custom_01);
1335                         } else if (i == 1) {
1336                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1337                                 wiphy_apply_custom_regulatory(hw->wiphy,
1338                                         &hwsim_world_regdom_custom_02);
1339                         } else if (i == 4)
1340                                 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1341                         break;
1342                 default:
1343                         break;
1344                 }
1345
1346                 /* give the regulatory workqueue a chance to run */
1347                 if (regtest)
1348                         schedule_timeout_interruptible(1);
1349                 err = ieee80211_register_hw(hw);
1350                 if (err < 0) {
1351                         printk(KERN_DEBUG "mac80211_hwsim: "
1352                                "ieee80211_register_hw failed (%d)\n", err);
1353                         goto failed_hw;
1354                 }
1355
1356                 /* Work to be done after to ieee80211_register_hw() */
1357                 switch (regtest) {
1358                 case HWSIM_REGTEST_WORLD_ROAM:
1359                 case HWSIM_REGTEST_DISABLED:
1360                         break;
1361                 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
1362                         if (!i)
1363                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1364                         break;
1365                 case HWSIM_REGTEST_DRIVER_REG_ALL:
1366                 case HWSIM_REGTEST_STRICT_ALL:
1367                         regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1368                         break;
1369                 case HWSIM_REGTEST_DIFF_COUNTRY:
1370                         if (i < ARRAY_SIZE(hwsim_alpha2s))
1371                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[i]);
1372                         break;
1373                 case HWSIM_REGTEST_CUSTOM_WORLD:
1374                 case HWSIM_REGTEST_CUSTOM_WORLD_2:
1375                         /*
1376                          * Nothing to be done for custom world regulatory
1377                          * domains after to ieee80211_register_hw
1378                          */
1379                         break;
1380                 case HWSIM_REGTEST_STRICT_FOLLOW:
1381                         if (i == 0)
1382                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1383                         break;
1384                 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
1385                         if (i == 0)
1386                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1387                         else if (i == 1)
1388                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
1389                         break;
1390                 case HWSIM_REGTEST_ALL:
1391                         if (i == 2)
1392                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1393                         else if (i == 3)
1394                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
1395                         else if (i == 4)
1396                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[2]);
1397                         break;
1398                 default:
1399                         break;
1400                 }
1401
1402                 printk(KERN_DEBUG "%s: hwaddr %pM registered\n",
1403                        wiphy_name(hw->wiphy),
1404                        hw->wiphy->perm_addr);
1405
1406                 data->debugfs = debugfs_create_dir("hwsim",
1407                                                    hw->wiphy->debugfsdir);
1408                 data->debugfs_ps = debugfs_create_file("ps", 0666,
1409                                                        data->debugfs, data,
1410                                                        &hwsim_fops_ps);
1411                 data->debugfs_group = debugfs_create_file("group", 0666,
1412                                                         data->debugfs, data,
1413                                                         &hwsim_fops_group);
1414
1415                 setup_timer(&data->beacon_timer, mac80211_hwsim_beacon,
1416                             (unsigned long) hw);
1417
1418                 list_add_tail(&data->list, &hwsim_radios);
1419         }
1420
1421         hwsim_mon = alloc_netdev(0, "hwsim%d", hwsim_mon_setup);
1422         if (hwsim_mon == NULL)
1423                 goto failed;
1424
1425         rtnl_lock();
1426
1427         err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
1428         if (err < 0)
1429                 goto failed_mon;
1430
1431
1432         err = register_netdevice(hwsim_mon);
1433         if (err < 0)
1434                 goto failed_mon;
1435
1436         rtnl_unlock();
1437
1438         return 0;
1439
1440 failed_mon:
1441         rtnl_unlock();
1442         free_netdev(hwsim_mon);
1443         mac80211_hwsim_free();
1444         return err;
1445
1446 failed_hw:
1447         device_unregister(data->dev);
1448 failed_drvdata:
1449         ieee80211_free_hw(hw);
1450 failed:
1451         mac80211_hwsim_free();
1452         return err;
1453 }
1454
1455
1456 static void __exit exit_mac80211_hwsim(void)
1457 {
1458         printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
1459
1460         mac80211_hwsim_free();
1461         unregister_netdev(hwsim_mon);
1462 }
1463
1464
1465 module_init(init_mac80211_hwsim);
1466 module_exit(exit_mac80211_hwsim);