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17#include <linux/list.h>
18#include <linux/spinlock.h>
19#include <net/mac80211.h>
20#include <net/ieee80211_radiotap.h>
21#include <linux/if_arp.h>
22#include <linux/rtnetlink.h>
23#include <linux/etherdevice.h>
24#include <linux/debugfs.h>
25
26MODULE_AUTHOR("Jouni Malinen");
27MODULE_DESCRIPTION("Software simulator of 802.11 radio(s) for mac80211");
28MODULE_LICENSE("GPL");
29
30static int radios = 2;
31module_param(radios, int, 0444);
32MODULE_PARM_DESC(radios, "Number of simulated radios");
33
34struct hwsim_vif_priv {
35 u32 magic;
36 u8 bssid[ETH_ALEN];
37 bool assoc;
38 u16 aid;
39};
40
41#define HWSIM_VIF_MAGIC 0x69537748
42
43static inline void hwsim_check_magic(struct ieee80211_vif *vif)
44{
45 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
46 WARN_ON(vp->magic != HWSIM_VIF_MAGIC);
47}
48
49static inline void hwsim_set_magic(struct ieee80211_vif *vif)
50{
51 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
52 vp->magic = HWSIM_VIF_MAGIC;
53}
54
55static inline void hwsim_clear_magic(struct ieee80211_vif *vif)
56{
57 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
58 vp->magic = 0;
59}
60
61struct hwsim_sta_priv {
62 u32 magic;
63};
64
65#define HWSIM_STA_MAGIC 0x6d537748
66
67static inline void hwsim_check_sta_magic(struct ieee80211_sta *sta)
68{
69 struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
70 WARN_ON(sp->magic != HWSIM_STA_MAGIC);
71}
72
73static inline void hwsim_set_sta_magic(struct ieee80211_sta *sta)
74{
75 struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
76 sp->magic = HWSIM_STA_MAGIC;
77}
78
79static inline void hwsim_clear_sta_magic(struct ieee80211_sta *sta)
80{
81 struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
82 sp->magic = 0;
83}
84
85static struct class *hwsim_class;
86
87static struct net_device *hwsim_mon;
88
89
90static const struct ieee80211_channel hwsim_channels[] = {
91 { .center_freq = 2412 },
92 { .center_freq = 2417 },
93 { .center_freq = 2422 },
94 { .center_freq = 2427 },
95 { .center_freq = 2432 },
96 { .center_freq = 2437 },
97 { .center_freq = 2442 },
98 { .center_freq = 2447 },
99 { .center_freq = 2452 },
100 { .center_freq = 2457 },
101 { .center_freq = 2462 },
102 { .center_freq = 2467 },
103 { .center_freq = 2472 },
104 { .center_freq = 2484 },
105};
106
107static const struct ieee80211_rate hwsim_rates[] = {
108 { .bitrate = 10 },
109 { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
110 { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
111 { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
112 { .bitrate = 60 },
113 { .bitrate = 90 },
114 { .bitrate = 120 },
115 { .bitrate = 180 },
116 { .bitrate = 240 },
117 { .bitrate = 360 },
118 { .bitrate = 480 },
119 { .bitrate = 540 }
120};
121
122static spinlock_t hwsim_radio_lock;
123static struct list_head hwsim_radios;
124
125struct mac80211_hwsim_data {
126 struct list_head list;
127 struct ieee80211_hw *hw;
128 struct device *dev;
129 struct ieee80211_supported_band band;
130 struct ieee80211_channel channels[ARRAY_SIZE(hwsim_channels)];
131 struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
132
133 struct ieee80211_channel *channel;
134 int radio_enabled;
135 unsigned long beacon_int;
136 unsigned int rx_filter;
137 int started;
138 struct timer_list beacon_timer;
139 enum ps_mode {
140 PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
141 } ps;
142 bool ps_poll_pending;
143 struct dentry *debugfs;
144 struct dentry *debugfs_ps;
145};
146
147
148struct hwsim_radiotap_hdr {
149 struct ieee80211_radiotap_header hdr;
150 u8 rt_flags;
151 u8 rt_rate;
152 __le16 rt_channel;
153 __le16 rt_chbitmask;
154} __attribute__ ((packed));
155
156
157static int hwsim_mon_xmit(struct sk_buff *skb, struct net_device *dev)
158{
159
160 dev_kfree_skb(skb);
161 return 0;
162}
163
164
165static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
166 struct sk_buff *tx_skb)
167{
168 struct mac80211_hwsim_data *data = hw->priv;
169 struct sk_buff *skb;
170 struct hwsim_radiotap_hdr *hdr;
171 u16 flags;
172 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
173 struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
174
175 if (!netif_running(hwsim_mon))
176 return;
177
178 skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
179 if (skb == NULL)
180 return;
181
182 hdr = (struct hwsim_radiotap_hdr *) skb_push(skb, sizeof(*hdr));
183 hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
184 hdr->hdr.it_pad = 0;
185 hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
186 hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
187 (1 << IEEE80211_RADIOTAP_RATE) |
188 (1 << IEEE80211_RADIOTAP_CHANNEL));
189 hdr->rt_flags = 0;
190 hdr->rt_rate = txrate->bitrate / 5;
191 hdr->rt_channel = cpu_to_le16(data->channel->center_freq);
192 flags = IEEE80211_CHAN_2GHZ;
193 if (txrate->flags & IEEE80211_RATE_ERP_G)
194 flags |= IEEE80211_CHAN_OFDM;
195 else
196 flags |= IEEE80211_CHAN_CCK;
197 hdr->rt_chbitmask = cpu_to_le16(flags);
198
199 skb->dev = hwsim_mon;
200 skb_set_mac_header(skb, 0);
201 skb->ip_summed = CHECKSUM_UNNECESSARY;
202 skb->pkt_type = PACKET_OTHERHOST;
203 skb->protocol = htons(ETH_P_802_2);
204 memset(skb->cb, 0, sizeof(skb->cb));
205 netif_rx(skb);
206}
207
208
209static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
210 struct sk_buff *skb)
211{
212 switch (data->ps) {
213 case PS_DISABLED:
214 return true;
215 case PS_ENABLED:
216 return false;
217 case PS_AUTO_POLL:
218
219
220 return true;
221 case PS_MANUAL_POLL:
222
223
224 if (data->ps_poll_pending &&
225 memcmp(data->hw->wiphy->perm_addr, skb->data + 4,
226 ETH_ALEN) == 0) {
227 data->ps_poll_pending = false;
228 return true;
229 }
230 return false;
231 }
232
233 return true;
234}
235
236
237static bool mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
238 struct sk_buff *skb)
239{
240 struct mac80211_hwsim_data *data = hw->priv, *data2;
241 bool ack = false;
242 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
243 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
244 struct ieee80211_rx_status rx_status;
245
246 memset(&rx_status, 0, sizeof(rx_status));
247
248 rx_status.freq = data->channel->center_freq;
249 rx_status.band = data->channel->band;
250 rx_status.rate_idx = info->control.rates[0].idx;
251
252
253 if (data->ps != PS_DISABLED)
254 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
255
256
257 spin_lock(&hwsim_radio_lock);
258 list_for_each_entry(data2, &hwsim_radios, list) {
259 struct sk_buff *nskb;
260
261 if (data == data2)
262 continue;
263
264 if (!data2->started || !data2->radio_enabled ||
265 !hwsim_ps_rx_ok(data2, skb) ||
266 data->channel->center_freq != data2->channel->center_freq)
267 continue;
268
269 nskb = skb_copy(skb, GFP_ATOMIC);
270 if (nskb == NULL)
271 continue;
272
273 if (memcmp(hdr->addr1, data2->hw->wiphy->perm_addr,
274 ETH_ALEN) == 0)
275 ack = true;
276 ieee80211_rx_irqsafe(data2->hw, nskb, &rx_status);
277 }
278 spin_unlock(&hwsim_radio_lock);
279
280 return ack;
281}
282
283
284static int mac80211_hwsim_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
285{
286 struct mac80211_hwsim_data *data = hw->priv;
287 bool ack;
288 struct ieee80211_tx_info *txi;
289
290 mac80211_hwsim_monitor_rx(hw, skb);
291
292 if (skb->len < 10) {
293
294 dev_kfree_skb(skb);
295 return NETDEV_TX_OK;
296 }
297
298 if (!data->radio_enabled) {
299 printk(KERN_DEBUG "%s: dropped TX frame since radio "
300 "disabled\n", wiphy_name(hw->wiphy));
301 dev_kfree_skb(skb);
302 return NETDEV_TX_OK;
303 }
304
305 ack = mac80211_hwsim_tx_frame(hw, skb);
306
307 txi = IEEE80211_SKB_CB(skb);
308
309 if (txi->control.vif)
310 hwsim_check_magic(txi->control.vif);
311 if (txi->control.sta)
312 hwsim_check_sta_magic(txi->control.sta);
313
314 ieee80211_tx_info_clear_status(txi);
315 if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
316 txi->flags |= IEEE80211_TX_STAT_ACK;
317 ieee80211_tx_status_irqsafe(hw, skb);
318 return NETDEV_TX_OK;
319}
320
321
322static int mac80211_hwsim_start(struct ieee80211_hw *hw)
323{
324 struct mac80211_hwsim_data *data = hw->priv;
325 printk(KERN_DEBUG "%s:%s\n", wiphy_name(hw->wiphy), __func__);
326 data->started = 1;
327 return 0;
328}
329
330
331static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
332{
333 struct mac80211_hwsim_data *data = hw->priv;
334 data->started = 0;
335 del_timer(&data->beacon_timer);
336 printk(KERN_DEBUG "%s:%s\n", wiphy_name(hw->wiphy), __func__);
337}
338
339
340static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
341 struct ieee80211_if_init_conf *conf)
342{
343 printk(KERN_DEBUG "%s:%s (type=%d mac_addr=%pM)\n",
344 wiphy_name(hw->wiphy), __func__, conf->type,
345 conf->mac_addr);
346 hwsim_set_magic(conf->vif);
347 return 0;
348}
349
350
351static void mac80211_hwsim_remove_interface(
352 struct ieee80211_hw *hw, struct ieee80211_if_init_conf *conf)
353{
354 printk(KERN_DEBUG "%s:%s (type=%d mac_addr=%pM)\n",
355 wiphy_name(hw->wiphy), __func__, conf->type,
356 conf->mac_addr);
357 hwsim_check_magic(conf->vif);
358 hwsim_clear_magic(conf->vif);
359}
360
361
362static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
363 struct ieee80211_vif *vif)
364{
365 struct ieee80211_hw *hw = arg;
366 struct sk_buff *skb;
367 struct ieee80211_tx_info *info;
368
369 hwsim_check_magic(vif);
370
371 if (vif->type != NL80211_IFTYPE_AP &&
372 vif->type != NL80211_IFTYPE_MESH_POINT)
373 return;
374
375 skb = ieee80211_beacon_get(hw, vif);
376 if (skb == NULL)
377 return;
378 info = IEEE80211_SKB_CB(skb);
379
380 mac80211_hwsim_monitor_rx(hw, skb);
381 mac80211_hwsim_tx_frame(hw, skb);
382 dev_kfree_skb(skb);
383}
384
385
386static void mac80211_hwsim_beacon(unsigned long arg)
387{
388 struct ieee80211_hw *hw = (struct ieee80211_hw *) arg;
389 struct mac80211_hwsim_data *data = hw->priv;
390
391 if (!data->started || !data->radio_enabled)
392 return;
393
394 ieee80211_iterate_active_interfaces_atomic(
395 hw, mac80211_hwsim_beacon_tx, hw);
396
397 data->beacon_timer.expires = jiffies + data->beacon_int;
398 add_timer(&data->beacon_timer);
399}
400
401
402static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
403{
404 struct mac80211_hwsim_data *data = hw->priv;
405 struct ieee80211_conf *conf = &hw->conf;
406
407 printk(KERN_DEBUG "%s:%s (freq=%d radio_enabled=%d beacon_int=%d)\n",
408 wiphy_name(hw->wiphy), __func__,
409 conf->channel->center_freq, conf->radio_enabled,
410 conf->beacon_int);
411
412 data->channel = conf->channel;
413 data->radio_enabled = conf->radio_enabled;
414 data->beacon_int = 1024 * conf->beacon_int / 1000 * HZ / 1000;
415 if (data->beacon_int < 1)
416 data->beacon_int = 1;
417
418 if (!data->started || !data->radio_enabled)
419 del_timer(&data->beacon_timer);
420 else
421 mod_timer(&data->beacon_timer, jiffies + data->beacon_int);
422
423 return 0;
424}
425
426
427static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
428 unsigned int changed_flags,
429 unsigned int *total_flags,
430 int mc_count,
431 struct dev_addr_list *mc_list)
432{
433 struct mac80211_hwsim_data *data = hw->priv;
434
435 printk(KERN_DEBUG "%s:%s\n", wiphy_name(hw->wiphy), __func__);
436
437 data->rx_filter = 0;
438 if (*total_flags & FIF_PROMISC_IN_BSS)
439 data->rx_filter |= FIF_PROMISC_IN_BSS;
440 if (*total_flags & FIF_ALLMULTI)
441 data->rx_filter |= FIF_ALLMULTI;
442
443 *total_flags = data->rx_filter;
444}
445
446static int mac80211_hwsim_config_interface(struct ieee80211_hw *hw,
447 struct ieee80211_vif *vif,
448 struct ieee80211_if_conf *conf)
449{
450 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
451
452 hwsim_check_magic(vif);
453 if (conf->changed & IEEE80211_IFCC_BSSID) {
454 DECLARE_MAC_BUF(mac);
455 printk(KERN_DEBUG "%s:%s: BSSID changed: %pM\n",
456 wiphy_name(hw->wiphy), __func__,
457 conf->bssid);
458 memcpy(vp->bssid, conf->bssid, ETH_ALEN);
459 }
460 return 0;
461}
462
463static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
464 struct ieee80211_vif *vif,
465 struct ieee80211_bss_conf *info,
466 u32 changed)
467{
468 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
469
470 hwsim_check_magic(vif);
471
472 printk(KERN_DEBUG "%s:%s(changed=0x%x)\n",
473 wiphy_name(hw->wiphy), __func__, changed);
474
475 if (changed & BSS_CHANGED_ASSOC) {
476 printk(KERN_DEBUG " %s: ASSOC: assoc=%d aid=%d\n",
477 wiphy_name(hw->wiphy), info->assoc, info->aid);
478 vp->assoc = info->assoc;
479 vp->aid = info->aid;
480 }
481
482 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
483 printk(KERN_DEBUG " %s: ERP_CTS_PROT: %d\n",
484 wiphy_name(hw->wiphy), info->use_cts_prot);
485 }
486
487 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
488 printk(KERN_DEBUG " %s: ERP_PREAMBLE: %d\n",
489 wiphy_name(hw->wiphy), info->use_short_preamble);
490 }
491
492 if (changed & BSS_CHANGED_ERP_SLOT) {
493 printk(KERN_DEBUG " %s: ERP_SLOT: %d\n",
494 wiphy_name(hw->wiphy), info->use_short_slot);
495 }
496
497 if (changed & BSS_CHANGED_HT) {
498 printk(KERN_DEBUG " %s: HT: op_mode=0x%x\n",
499 wiphy_name(hw->wiphy),
500 info->ht.operation_mode);
501 }
502
503 if (changed & BSS_CHANGED_BASIC_RATES) {
504 printk(KERN_DEBUG " %s: BASIC_RATES: 0x%llx\n",
505 wiphy_name(hw->wiphy),
506 (unsigned long long) info->basic_rates);
507 }
508}
509
510static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
511 struct ieee80211_vif *vif,
512 enum sta_notify_cmd cmd,
513 struct ieee80211_sta *sta)
514{
515 hwsim_check_magic(vif);
516 switch (cmd) {
517 case STA_NOTIFY_ADD:
518 hwsim_set_sta_magic(sta);
519 break;
520 case STA_NOTIFY_REMOVE:
521 hwsim_clear_sta_magic(sta);
522 break;
523 case STA_NOTIFY_SLEEP:
524 case STA_NOTIFY_AWAKE:
525
526 break;
527 }
528}
529
530static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
531 struct ieee80211_sta *sta,
532 bool set)
533{
534 hwsim_check_sta_magic(sta);
535 return 0;
536}
537
538static int mac80211_hwsim_conf_tx(
539 struct ieee80211_hw *hw, u16 queue,
540 const struct ieee80211_tx_queue_params *params)
541{
542 printk(KERN_DEBUG "%s:%s (queue=%d txop=%d cw_min=%d cw_max=%d "
543 "aifs=%d)\n",
544 wiphy_name(hw->wiphy), __func__, queue,
545 params->txop, params->cw_min, params->cw_max, params->aifs);
546 return 0;
547}
548
549static const struct ieee80211_ops mac80211_hwsim_ops =
550{
551 .tx = mac80211_hwsim_tx,
552 .start = mac80211_hwsim_start,
553 .stop = mac80211_hwsim_stop,
554 .add_interface = mac80211_hwsim_add_interface,
555 .remove_interface = mac80211_hwsim_remove_interface,
556 .config = mac80211_hwsim_config,
557 .configure_filter = mac80211_hwsim_configure_filter,
558 .config_interface = mac80211_hwsim_config_interface,
559 .bss_info_changed = mac80211_hwsim_bss_info_changed,
560 .sta_notify = mac80211_hwsim_sta_notify,
561 .set_tim = mac80211_hwsim_set_tim,
562 .conf_tx = mac80211_hwsim_conf_tx,
563};
564
565
566static void mac80211_hwsim_free(void)
567{
568 struct list_head tmplist, *i, *tmp;
569 struct mac80211_hwsim_data *data;
570
571 INIT_LIST_HEAD(&tmplist);
572
573 spin_lock_bh(&hwsim_radio_lock);
574 list_for_each_safe(i, tmp, &hwsim_radios)
575 list_move(i, &tmplist);
576 spin_unlock_bh(&hwsim_radio_lock);
577
578 list_for_each_entry(data, &tmplist, list) {
579 debugfs_remove(data->debugfs_ps);
580 debugfs_remove(data->debugfs);
581 ieee80211_unregister_hw(data->hw);
582 device_unregister(data->dev);
583 ieee80211_free_hw(data->hw);
584 }
585 class_destroy(hwsim_class);
586}
587
588
589static struct device_driver mac80211_hwsim_driver = {
590 .name = "mac80211_hwsim"
591};
592
593
594static void hwsim_mon_setup(struct net_device *dev)
595{
596 dev->hard_start_xmit = hwsim_mon_xmit;
597 dev->destructor = free_netdev;
598 ether_setup(dev);
599 dev->tx_queue_len = 0;
600 dev->type = ARPHRD_IEEE80211_RADIOTAP;
601 memset(dev->dev_addr, 0, ETH_ALEN);
602 dev->dev_addr[0] = 0x12;
603}
604
605
606static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
607{
608 struct mac80211_hwsim_data *data = dat;
609 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
610 DECLARE_MAC_BUF(buf);
611 struct sk_buff *skb;
612 struct ieee80211_pspoll *pspoll;
613
614 if (!vp->assoc)
615 return;
616
617 printk(KERN_DEBUG "%s:%s: send PS-Poll to %pM for aid %d\n",
618 wiphy_name(data->hw->wiphy), __func__, vp->bssid, vp->aid);
619
620 skb = dev_alloc_skb(sizeof(*pspoll));
621 if (!skb)
622 return;
623 pspoll = (void *) skb_put(skb, sizeof(*pspoll));
624 pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
625 IEEE80211_STYPE_PSPOLL |
626 IEEE80211_FCTL_PM);
627 pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
628 memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
629 memcpy(pspoll->ta, mac, ETH_ALEN);
630 if (data->radio_enabled &&
631 !mac80211_hwsim_tx_frame(data->hw, skb))
632 printk(KERN_DEBUG "%s: PS-Poll frame not ack'ed\n", __func__);
633 dev_kfree_skb(skb);
634}
635
636
637static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
638 struct ieee80211_vif *vif, int ps)
639{
640 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
641 DECLARE_MAC_BUF(buf);
642 struct sk_buff *skb;
643 struct ieee80211_hdr *hdr;
644
645 if (!vp->assoc)
646 return;
647
648 printk(KERN_DEBUG "%s:%s: send data::nullfunc to %pM ps=%d\n",
649 wiphy_name(data->hw->wiphy), __func__, vp->bssid, ps);
650
651 skb = dev_alloc_skb(sizeof(*hdr));
652 if (!skb)
653 return;
654 hdr = (void *) skb_put(skb, sizeof(*hdr) - ETH_ALEN);
655 hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
656 IEEE80211_STYPE_NULLFUNC |
657 (ps ? IEEE80211_FCTL_PM : 0));
658 hdr->duration_id = cpu_to_le16(0);
659 memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
660 memcpy(hdr->addr2, mac, ETH_ALEN);
661 memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
662 if (data->radio_enabled &&
663 !mac80211_hwsim_tx_frame(data->hw, skb))
664 printk(KERN_DEBUG "%s: nullfunc frame not ack'ed\n", __func__);
665 dev_kfree_skb(skb);
666}
667
668
669static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
670 struct ieee80211_vif *vif)
671{
672 struct mac80211_hwsim_data *data = dat;
673 hwsim_send_nullfunc(data, mac, vif, 1);
674}
675
676
677static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
678 struct ieee80211_vif *vif)
679{
680 struct mac80211_hwsim_data *data = dat;
681 hwsim_send_nullfunc(data, mac, vif, 0);
682}
683
684
685static int hwsim_fops_ps_read(void *dat, u64 *val)
686{
687 struct mac80211_hwsim_data *data = dat;
688 *val = data->ps;
689 return 0;
690}
691
692static int hwsim_fops_ps_write(void *dat, u64 val)
693{
694 struct mac80211_hwsim_data *data = dat;
695 enum ps_mode old_ps;
696
697 if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
698 val != PS_MANUAL_POLL)
699 return -EINVAL;
700
701 old_ps = data->ps;
702 data->ps = val;
703
704 if (val == PS_MANUAL_POLL) {
705 ieee80211_iterate_active_interfaces(data->hw,
706 hwsim_send_ps_poll, data);
707 data->ps_poll_pending = true;
708 } else if (old_ps == PS_DISABLED && val != PS_DISABLED) {
709 ieee80211_iterate_active_interfaces(data->hw,
710 hwsim_send_nullfunc_ps,
711 data);
712 } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
713 ieee80211_iterate_active_interfaces(data->hw,
714 hwsim_send_nullfunc_no_ps,
715 data);
716 }
717
718 return 0;
719}
720
721DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
722 "%llu\n");
723
724
725static int __init init_mac80211_hwsim(void)
726{
727 int i, err = 0;
728 u8 addr[ETH_ALEN];
729 struct mac80211_hwsim_data *data;
730 struct ieee80211_hw *hw;
731
732 if (radios < 1 || radios > 100)
733 return -EINVAL;
734
735 spin_lock_init(&hwsim_radio_lock);
736 INIT_LIST_HEAD(&hwsim_radios);
737
738 hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
739 if (IS_ERR(hwsim_class))
740 return PTR_ERR(hwsim_class);
741
742 memset(addr, 0, ETH_ALEN);
743 addr[0] = 0x02;
744
745 for (i = 0; i < radios; i++) {
746 printk(KERN_DEBUG "mac80211_hwsim: Initializing radio %d\n",
747 i);
748 hw = ieee80211_alloc_hw(sizeof(*data), &mac80211_hwsim_ops);
749 if (!hw) {
750 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw "
751 "failed\n");
752 err = -ENOMEM;
753 goto failed;
754 }
755 data = hw->priv;
756 data->hw = hw;
757
758 data->dev = device_create(hwsim_class, NULL, 0, hw,
759 "hwsim%d", i);
760 if (IS_ERR(data->dev)) {
761 printk(KERN_DEBUG
762 "mac80211_hwsim: device_create "
763 "failed (%ld)\n", PTR_ERR(data->dev));
764 err = -ENOMEM;
765 goto failed_drvdata;
766 }
767 data->dev->driver = &mac80211_hwsim_driver;
768
769 SET_IEEE80211_DEV(hw, data->dev);
770 addr[3] = i >> 8;
771 addr[4] = i;
772 SET_IEEE80211_PERM_ADDR(hw, addr);
773
774 hw->channel_change_time = 1;
775 hw->queues = 4;
776 hw->wiphy->interface_modes =
777 BIT(NL80211_IFTYPE_STATION) |
778 BIT(NL80211_IFTYPE_AP) |
779 BIT(NL80211_IFTYPE_MESH_POINT);
780 hw->ampdu_queues = 1;
781
782
783 hw->vif_data_size = sizeof(struct hwsim_vif_priv);
784 hw->sta_data_size = sizeof(struct hwsim_sta_priv);
785
786 memcpy(data->channels, hwsim_channels, sizeof(hwsim_channels));
787 memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
788 data->band.channels = data->channels;
789 data->band.n_channels = ARRAY_SIZE(hwsim_channels);
790 data->band.bitrates = data->rates;
791 data->band.n_bitrates = ARRAY_SIZE(hwsim_rates);
792 data->band.ht_cap.ht_supported = true;
793 data->band.ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
794 IEEE80211_HT_CAP_GRN_FLD |
795 IEEE80211_HT_CAP_SGI_40 |
796 IEEE80211_HT_CAP_DSSSCCK40;
797 data->band.ht_cap.ampdu_factor = 0x3;
798 data->band.ht_cap.ampdu_density = 0x6;
799 memset(&data->band.ht_cap.mcs, 0,
800 sizeof(data->band.ht_cap.mcs));
801 data->band.ht_cap.mcs.rx_mask[0] = 0xff;
802 data->band.ht_cap.mcs.rx_mask[1] = 0xff;
803 data->band.ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
804 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &data->band;
805
806 err = ieee80211_register_hw(hw);
807 if (err < 0) {
808 printk(KERN_DEBUG "mac80211_hwsim: "
809 "ieee80211_register_hw failed (%d)\n", err);
810 goto failed_hw;
811 }
812
813 printk(KERN_DEBUG "%s: hwaddr %pM registered\n",
814 wiphy_name(hw->wiphy),
815 hw->wiphy->perm_addr);
816
817 data->debugfs = debugfs_create_dir("hwsim",
818 hw->wiphy->debugfsdir);
819 data->debugfs_ps = debugfs_create_file("ps", 0666,
820 data->debugfs, data,
821 &hwsim_fops_ps);
822
823 setup_timer(&data->beacon_timer, mac80211_hwsim_beacon,
824 (unsigned long) hw);
825
826 list_add_tail(&data->list, &hwsim_radios);
827 }
828
829 hwsim_mon = alloc_netdev(0, "hwsim%d", hwsim_mon_setup);
830 if (hwsim_mon == NULL)
831 goto failed;
832
833 rtnl_lock();
834
835 err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
836 if (err < 0)
837 goto failed_mon;
838
839
840 err = register_netdevice(hwsim_mon);
841 if (err < 0)
842 goto failed_mon;
843
844 rtnl_unlock();
845
846 return 0;
847
848failed_mon:
849 rtnl_unlock();
850 free_netdev(hwsim_mon);
851 mac80211_hwsim_free();
852 return err;
853
854failed_hw:
855 device_unregister(data->dev);
856failed_drvdata:
857 ieee80211_free_hw(hw);
858failed:
859 mac80211_hwsim_free();
860 return err;
861}
862
863
864static void __exit exit_mac80211_hwsim(void)
865{
866 printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
867
868 unregister_netdev(hwsim_mon);
869 mac80211_hwsim_free();
870}
871
872
873module_init(init_mac80211_hwsim);
874module_exit(exit_mac80211_hwsim);
875
