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Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wirel...
[deliverable/linux.git] / drivers / net / wireless / mac80211_hwsim.c
1 /*
2 * mac80211_hwsim - software simulator of 802.11 radio(s) for mac80211
3 * Copyright (c) 2008, Jouni Malinen <j@w1.fi>
4 * Copyright (c) 2011, Javier Lopez <jlopex@gmail.com>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 */
10
11 /*
12 * TODO:
13 * - Add TSF sync and fix IBSS beacon transmission by adding
14 * competition for "air time" at TBTT
15 * - RX filtering based on filter configuration (data->rx_filter)
16 */
17
18 #include <linux/list.h>
19 #include <linux/slab.h>
20 #include <linux/spinlock.h>
21 #include <net/dst.h>
22 #include <net/xfrm.h>
23 #include <net/mac80211.h>
24 #include <net/ieee80211_radiotap.h>
25 #include <linux/if_arp.h>
26 #include <linux/rtnetlink.h>
27 #include <linux/etherdevice.h>
28 #include <linux/debugfs.h>
29 #include <linux/module.h>
30 #include <linux/ktime.h>
31 #include <net/genetlink.h>
32 #include "mac80211_hwsim.h"
33
34 #define WARN_QUEUE 100
35 #define MAX_QUEUE 200
36
37 MODULE_AUTHOR("Jouni Malinen");
38 MODULE_DESCRIPTION("Software simulator of 802.11 radio(s) for mac80211");
39 MODULE_LICENSE("GPL");
40
41 static u32 wmediumd_pid;
42
43 static int radios = 2;
44 module_param(radios, int, 0444);
45 MODULE_PARM_DESC(radios, "Number of simulated radios");
46
47 static bool fake_hw_scan;
48 module_param(fake_hw_scan, bool, 0444);
49 MODULE_PARM_DESC(fake_hw_scan, "Install fake (no-op) hw-scan handler");
50
51 /**
52 * enum hwsim_regtest - the type of regulatory tests we offer
53 *
54 * These are the different values you can use for the regtest
55 * module parameter. This is useful to help test world roaming
56 * and the driver regulatory_hint() call and combinations of these.
57 * If you want to do specific alpha2 regulatory domain tests simply
58 * use the userspace regulatory request as that will be respected as
59 * well without the need of this module parameter. This is designed
60 * only for testing the driver regulatory request, world roaming
61 * and all possible combinations.
62 *
63 * @HWSIM_REGTEST_DISABLED: No regulatory tests are performed,
64 * this is the default value.
65 * @HWSIM_REGTEST_DRIVER_REG_FOLLOW: Used for testing the driver regulatory
66 * hint, only one driver regulatory hint will be sent as such the
67 * secondary radios are expected to follow.
68 * @HWSIM_REGTEST_DRIVER_REG_ALL: Used for testing the driver regulatory
69 * request with all radios reporting the same regulatory domain.
70 * @HWSIM_REGTEST_DIFF_COUNTRY: Used for testing the drivers calling
71 * different regulatory domains requests. Expected behaviour is for
72 * an intersection to occur but each device will still use their
73 * respective regulatory requested domains. Subsequent radios will
74 * use the resulting intersection.
75 * @HWSIM_REGTEST_WORLD_ROAM: Used for testing the world roaming. We accomplish
76 * this by using a custom beacon-capable regulatory domain for the first
77 * radio. All other device world roam.
78 * @HWSIM_REGTEST_CUSTOM_WORLD: Used for testing the custom world regulatory
79 * domain requests. All radios will adhere to this custom world regulatory
80 * domain.
81 * @HWSIM_REGTEST_CUSTOM_WORLD_2: Used for testing 2 custom world regulatory
82 * domain requests. The first radio will adhere to the first custom world
83 * regulatory domain, the second one to the second custom world regulatory
84 * domain. All other devices will world roam.
85 * @HWSIM_REGTEST_STRICT_FOLLOW_: Used for testing strict regulatory domain
86 * settings, only the first radio will send a regulatory domain request
87 * and use strict settings. The rest of the radios are expected to follow.
88 * @HWSIM_REGTEST_STRICT_ALL: Used for testing strict regulatory domain
89 * settings. All radios will adhere to this.
90 * @HWSIM_REGTEST_STRICT_AND_DRIVER_REG: Used for testing strict regulatory
91 * domain settings, combined with secondary driver regulatory domain
92 * settings. The first radio will get a strict regulatory domain setting
93 * using the first driver regulatory request and the second radio will use
94 * non-strict settings using the second driver regulatory request. All
95 * other devices should follow the intersection created between the
96 * first two.
97 * @HWSIM_REGTEST_ALL: Used for testing every possible mix. You will need
98 * at least 6 radios for a complete test. We will test in this order:
99 * 1 - driver custom world regulatory domain
100 * 2 - second custom world regulatory domain
101 * 3 - first driver regulatory domain request
102 * 4 - second driver regulatory domain request
103 * 5 - strict regulatory domain settings using the third driver regulatory
104 * domain request
105 * 6 and on - should follow the intersection of the 3rd, 4rth and 5th radio
106 * regulatory requests.
107 */
108 enum hwsim_regtest {
109 HWSIM_REGTEST_DISABLED = 0,
110 HWSIM_REGTEST_DRIVER_REG_FOLLOW = 1,
111 HWSIM_REGTEST_DRIVER_REG_ALL = 2,
112 HWSIM_REGTEST_DIFF_COUNTRY = 3,
113 HWSIM_REGTEST_WORLD_ROAM = 4,
114 HWSIM_REGTEST_CUSTOM_WORLD = 5,
115 HWSIM_REGTEST_CUSTOM_WORLD_2 = 6,
116 HWSIM_REGTEST_STRICT_FOLLOW = 7,
117 HWSIM_REGTEST_STRICT_ALL = 8,
118 HWSIM_REGTEST_STRICT_AND_DRIVER_REG = 9,
119 HWSIM_REGTEST_ALL = 10,
120 };
121
122 /* Set to one of the HWSIM_REGTEST_* values above */
123 static int regtest = HWSIM_REGTEST_DISABLED;
124 module_param(regtest, int, 0444);
125 MODULE_PARM_DESC(regtest, "The type of regulatory test we want to run");
126
127 static const char *hwsim_alpha2s[] = {
128 "FI",
129 "AL",
130 "US",
131 "DE",
132 "JP",
133 "AL",
134 };
135
136 static const struct ieee80211_regdomain hwsim_world_regdom_custom_01 = {
137 .n_reg_rules = 4,
138 .alpha2 = "99",
139 .reg_rules = {
140 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
141 REG_RULE(2484-10, 2484+10, 40, 0, 20, 0),
142 REG_RULE(5150-10, 5240+10, 40, 0, 30, 0),
143 REG_RULE(5745-10, 5825+10, 40, 0, 30, 0),
144 }
145 };
146
147 static const struct ieee80211_regdomain hwsim_world_regdom_custom_02 = {
148 .n_reg_rules = 2,
149 .alpha2 = "99",
150 .reg_rules = {
151 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
152 REG_RULE(5725-10, 5850+10, 40, 0, 30,
153 NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS),
154 }
155 };
156
157 struct hwsim_vif_priv {
158 u32 magic;
159 u8 bssid[ETH_ALEN];
160 bool assoc;
161 u16 aid;
162 };
163
164 #define HWSIM_VIF_MAGIC 0x69537748
165
166 static inline void hwsim_check_magic(struct ieee80211_vif *vif)
167 {
168 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
169 WARN_ON(vp->magic != HWSIM_VIF_MAGIC);
170 }
171
172 static inline void hwsim_set_magic(struct ieee80211_vif *vif)
173 {
174 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
175 vp->magic = HWSIM_VIF_MAGIC;
176 }
177
178 static inline void hwsim_clear_magic(struct ieee80211_vif *vif)
179 {
180 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
181 vp->magic = 0;
182 }
183
184 struct hwsim_sta_priv {
185 u32 magic;
186 };
187
188 #define HWSIM_STA_MAGIC 0x6d537748
189
190 static inline void hwsim_check_sta_magic(struct ieee80211_sta *sta)
191 {
192 struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
193 WARN_ON(sp->magic != HWSIM_STA_MAGIC);
194 }
195
196 static inline void hwsim_set_sta_magic(struct ieee80211_sta *sta)
197 {
198 struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
199 sp->magic = HWSIM_STA_MAGIC;
200 }
201
202 static inline void hwsim_clear_sta_magic(struct ieee80211_sta *sta)
203 {
204 struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
205 sp->magic = 0;
206 }
207
208 static struct class *hwsim_class;
209
210 static struct net_device *hwsim_mon; /* global monitor netdev */
211
212 #define CHAN2G(_freq) { \
213 .band = IEEE80211_BAND_2GHZ, \
214 .center_freq = (_freq), \
215 .hw_value = (_freq), \
216 .max_power = 20, \
217 }
218
219 #define CHAN5G(_freq) { \
220 .band = IEEE80211_BAND_5GHZ, \
221 .center_freq = (_freq), \
222 .hw_value = (_freq), \
223 .max_power = 20, \
224 }
225
226 static const struct ieee80211_channel hwsim_channels_2ghz[] = {
227 CHAN2G(2412), /* Channel 1 */
228 CHAN2G(2417), /* Channel 2 */
229 CHAN2G(2422), /* Channel 3 */
230 CHAN2G(2427), /* Channel 4 */
231 CHAN2G(2432), /* Channel 5 */
232 CHAN2G(2437), /* Channel 6 */
233 CHAN2G(2442), /* Channel 7 */
234 CHAN2G(2447), /* Channel 8 */
235 CHAN2G(2452), /* Channel 9 */
236 CHAN2G(2457), /* Channel 10 */
237 CHAN2G(2462), /* Channel 11 */
238 CHAN2G(2467), /* Channel 12 */
239 CHAN2G(2472), /* Channel 13 */
240 CHAN2G(2484), /* Channel 14 */
241 };
242
243 static const struct ieee80211_channel hwsim_channels_5ghz[] = {
244 CHAN5G(5180), /* Channel 36 */
245 CHAN5G(5200), /* Channel 40 */
246 CHAN5G(5220), /* Channel 44 */
247 CHAN5G(5240), /* Channel 48 */
248
249 CHAN5G(5260), /* Channel 52 */
250 CHAN5G(5280), /* Channel 56 */
251 CHAN5G(5300), /* Channel 60 */
252 CHAN5G(5320), /* Channel 64 */
253
254 CHAN5G(5500), /* Channel 100 */
255 CHAN5G(5520), /* Channel 104 */
256 CHAN5G(5540), /* Channel 108 */
257 CHAN5G(5560), /* Channel 112 */
258 CHAN5G(5580), /* Channel 116 */
259 CHAN5G(5600), /* Channel 120 */
260 CHAN5G(5620), /* Channel 124 */
261 CHAN5G(5640), /* Channel 128 */
262 CHAN5G(5660), /* Channel 132 */
263 CHAN5G(5680), /* Channel 136 */
264 CHAN5G(5700), /* Channel 140 */
265
266 CHAN5G(5745), /* Channel 149 */
267 CHAN5G(5765), /* Channel 153 */
268 CHAN5G(5785), /* Channel 157 */
269 CHAN5G(5805), /* Channel 161 */
270 CHAN5G(5825), /* Channel 165 */
271 };
272
273 static const struct ieee80211_rate hwsim_rates[] = {
274 { .bitrate = 10 },
275 { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
276 { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
277 { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
278 { .bitrate = 60 },
279 { .bitrate = 90 },
280 { .bitrate = 120 },
281 { .bitrate = 180 },
282 { .bitrate = 240 },
283 { .bitrate = 360 },
284 { .bitrate = 480 },
285 { .bitrate = 540 }
286 };
287
288 static spinlock_t hwsim_radio_lock;
289 static struct list_head hwsim_radios;
290
291 struct mac80211_hwsim_data {
292 struct list_head list;
293 struct ieee80211_hw *hw;
294 struct device *dev;
295 struct ieee80211_supported_band bands[IEEE80211_NUM_BANDS];
296 struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)];
297 struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)];
298 struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
299
300 struct mac_address addresses[2];
301
302 struct ieee80211_channel *channel;
303 unsigned long beacon_int; /* in jiffies unit */
304 unsigned int rx_filter;
305 bool started, idle, scanning;
306 struct mutex mutex;
307 struct timer_list beacon_timer;
308 enum ps_mode {
309 PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
310 } ps;
311 bool ps_poll_pending;
312 struct dentry *debugfs;
313 struct dentry *debugfs_ps;
314
315 struct sk_buff_head pending; /* packets pending */
316 /*
317 * Only radios in the same group can communicate together (the
318 * channel has to match too). Each bit represents a group. A
319 * radio can be in more then one group.
320 */
321 u64 group;
322 struct dentry *debugfs_group;
323
324 int power_level;
325
326 /* difference between this hw's clock and the real clock, in usecs */
327 u64 tsf_offset;
328 };
329
330
331 struct hwsim_radiotap_hdr {
332 struct ieee80211_radiotap_header hdr;
333 __le64 rt_tsft;
334 u8 rt_flags;
335 u8 rt_rate;
336 __le16 rt_channel;
337 __le16 rt_chbitmask;
338 } __packed;
339
340 /* MAC80211_HWSIM netlinf family */
341 static struct genl_family hwsim_genl_family = {
342 .id = GENL_ID_GENERATE,
343 .hdrsize = 0,
344 .name = "MAC80211_HWSIM",
345 .version = 1,
346 .maxattr = HWSIM_ATTR_MAX,
347 };
348
349 /* MAC80211_HWSIM netlink policy */
350
351 static struct nla_policy hwsim_genl_policy[HWSIM_ATTR_MAX + 1] = {
352 [HWSIM_ATTR_ADDR_RECEIVER] = { .type = NLA_UNSPEC,
353 .len = 6*sizeof(u8) },
354 [HWSIM_ATTR_ADDR_TRANSMITTER] = { .type = NLA_UNSPEC,
355 .len = 6*sizeof(u8) },
356 [HWSIM_ATTR_FRAME] = { .type = NLA_BINARY,
357 .len = IEEE80211_MAX_DATA_LEN },
358 [HWSIM_ATTR_FLAGS] = { .type = NLA_U32 },
359 [HWSIM_ATTR_RX_RATE] = { .type = NLA_U32 },
360 [HWSIM_ATTR_SIGNAL] = { .type = NLA_U32 },
361 [HWSIM_ATTR_TX_INFO] = { .type = NLA_UNSPEC,
362 .len = IEEE80211_TX_MAX_RATES*sizeof(
363 struct hwsim_tx_rate)},
364 [HWSIM_ATTR_COOKIE] = { .type = NLA_U64 },
365 };
366
367 static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
368 struct net_device *dev)
369 {
370 /* TODO: allow packet injection */
371 dev_kfree_skb(skb);
372 return NETDEV_TX_OK;
373 }
374
375 static __le64 __mac80211_hwsim_get_tsf(struct mac80211_hwsim_data *data)
376 {
377 struct timeval tv = ktime_to_timeval(ktime_get_real());
378 u64 now = tv.tv_sec * USEC_PER_SEC + tv.tv_usec;
379 return cpu_to_le64(now + data->tsf_offset);
380 }
381
382 static u64 mac80211_hwsim_get_tsf(struct ieee80211_hw *hw,
383 struct ieee80211_vif *vif)
384 {
385 struct mac80211_hwsim_data *data = hw->priv;
386 return le64_to_cpu(__mac80211_hwsim_get_tsf(data));
387 }
388
389 static void mac80211_hwsim_set_tsf(struct ieee80211_hw *hw,
390 struct ieee80211_vif *vif, u64 tsf)
391 {
392 struct mac80211_hwsim_data *data = hw->priv;
393 struct timeval tv = ktime_to_timeval(ktime_get_real());
394 u64 now = tv.tv_sec * USEC_PER_SEC + tv.tv_usec;
395 data->tsf_offset = tsf - now;
396 }
397
398 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
399 struct sk_buff *tx_skb)
400 {
401 struct mac80211_hwsim_data *data = hw->priv;
402 struct sk_buff *skb;
403 struct hwsim_radiotap_hdr *hdr;
404 u16 flags;
405 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
406 struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
407
408 if (!netif_running(hwsim_mon))
409 return;
410
411 skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
412 if (skb == NULL)
413 return;
414
415 hdr = (struct hwsim_radiotap_hdr *) skb_push(skb, sizeof(*hdr));
416 hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
417 hdr->hdr.it_pad = 0;
418 hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
419 hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
420 (1 << IEEE80211_RADIOTAP_RATE) |
421 (1 << IEEE80211_RADIOTAP_TSFT) |
422 (1 << IEEE80211_RADIOTAP_CHANNEL));
423 hdr->rt_tsft = __mac80211_hwsim_get_tsf(data);
424 hdr->rt_flags = 0;
425 hdr->rt_rate = txrate->bitrate / 5;
426 hdr->rt_channel = cpu_to_le16(data->channel->center_freq);
427 flags = IEEE80211_CHAN_2GHZ;
428 if (txrate->flags & IEEE80211_RATE_ERP_G)
429 flags |= IEEE80211_CHAN_OFDM;
430 else
431 flags |= IEEE80211_CHAN_CCK;
432 hdr->rt_chbitmask = cpu_to_le16(flags);
433
434 skb->dev = hwsim_mon;
435 skb_set_mac_header(skb, 0);
436 skb->ip_summed = CHECKSUM_UNNECESSARY;
437 skb->pkt_type = PACKET_OTHERHOST;
438 skb->protocol = htons(ETH_P_802_2);
439 memset(skb->cb, 0, sizeof(skb->cb));
440 netif_rx(skb);
441 }
442
443
444 static void mac80211_hwsim_monitor_ack(struct ieee80211_hw *hw, const u8 *addr)
445 {
446 struct mac80211_hwsim_data *data = hw->priv;
447 struct sk_buff *skb;
448 struct hwsim_radiotap_hdr *hdr;
449 u16 flags;
450 struct ieee80211_hdr *hdr11;
451
452 if (!netif_running(hwsim_mon))
453 return;
454
455 skb = dev_alloc_skb(100);
456 if (skb == NULL)
457 return;
458
459 hdr = (struct hwsim_radiotap_hdr *) skb_put(skb, sizeof(*hdr));
460 hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
461 hdr->hdr.it_pad = 0;
462 hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
463 hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
464 (1 << IEEE80211_RADIOTAP_CHANNEL));
465 hdr->rt_flags = 0;
466 hdr->rt_rate = 0;
467 hdr->rt_channel = cpu_to_le16(data->channel->center_freq);
468 flags = IEEE80211_CHAN_2GHZ;
469 hdr->rt_chbitmask = cpu_to_le16(flags);
470
471 hdr11 = (struct ieee80211_hdr *) skb_put(skb, 10);
472 hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
473 IEEE80211_STYPE_ACK);
474 hdr11->duration_id = cpu_to_le16(0);
475 memcpy(hdr11->addr1, addr, ETH_ALEN);
476
477 skb->dev = hwsim_mon;
478 skb_set_mac_header(skb, 0);
479 skb->ip_summed = CHECKSUM_UNNECESSARY;
480 skb->pkt_type = PACKET_OTHERHOST;
481 skb->protocol = htons(ETH_P_802_2);
482 memset(skb->cb, 0, sizeof(skb->cb));
483 netif_rx(skb);
484 }
485
486
487 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
488 struct sk_buff *skb)
489 {
490 switch (data->ps) {
491 case PS_DISABLED:
492 return true;
493 case PS_ENABLED:
494 return false;
495 case PS_AUTO_POLL:
496 /* TODO: accept (some) Beacons by default and other frames only
497 * if pending PS-Poll has been sent */
498 return true;
499 case PS_MANUAL_POLL:
500 /* Allow unicast frames to own address if there is a pending
501 * PS-Poll */
502 if (data->ps_poll_pending &&
503 memcmp(data->hw->wiphy->perm_addr, skb->data + 4,
504 ETH_ALEN) == 0) {
505 data->ps_poll_pending = false;
506 return true;
507 }
508 return false;
509 }
510
511 return true;
512 }
513
514
515 struct mac80211_hwsim_addr_match_data {
516 bool ret;
517 const u8 *addr;
518 };
519
520 static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
521 struct ieee80211_vif *vif)
522 {
523 struct mac80211_hwsim_addr_match_data *md = data;
524 if (memcmp(mac, md->addr, ETH_ALEN) == 0)
525 md->ret = true;
526 }
527
528
529 static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
530 const u8 *addr)
531 {
532 struct mac80211_hwsim_addr_match_data md;
533
534 if (memcmp(addr, data->hw->wiphy->perm_addr, ETH_ALEN) == 0)
535 return true;
536
537 md.ret = false;
538 md.addr = addr;
539 ieee80211_iterate_active_interfaces_atomic(data->hw,
540 mac80211_hwsim_addr_iter,
541 &md);
542
543 return md.ret;
544 }
545
546 static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
547 struct sk_buff *my_skb,
548 int dst_pid)
549 {
550 struct sk_buff *skb;
551 struct mac80211_hwsim_data *data = hw->priv;
552 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) my_skb->data;
553 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(my_skb);
554 void *msg_head;
555 unsigned int hwsim_flags = 0;
556 int i;
557 struct hwsim_tx_rate tx_attempts[IEEE80211_TX_MAX_RATES];
558
559 if (data->idle) {
560 wiphy_debug(hw->wiphy, "Trying to TX when idle - reject\n");
561 dev_kfree_skb(my_skb);
562 return;
563 }
564
565 if (data->ps != PS_DISABLED)
566 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
567 /* If the queue contains MAX_QUEUE skb's drop some */
568 if (skb_queue_len(&data->pending) >= MAX_QUEUE) {
569 /* Droping until WARN_QUEUE level */
570 while (skb_queue_len(&data->pending) >= WARN_QUEUE)
571 skb_dequeue(&data->pending);
572 }
573
574 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_ATOMIC);
575 if (skb == NULL)
576 goto nla_put_failure;
577
578 msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
579 HWSIM_CMD_FRAME);
580 if (msg_head == NULL) {
581 printk(KERN_DEBUG "mac80211_hwsim: problem with msg_head\n");
582 goto nla_put_failure;
583 }
584
585 if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
586 sizeof(struct mac_address), data->addresses[1].addr))
587 goto nla_put_failure;
588
589 /* We get the skb->data */
590 if (nla_put(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data))
591 goto nla_put_failure;
592
593 /* We get the flags for this transmission, and we translate them to
594 wmediumd flags */
595
596 if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
597 hwsim_flags |= HWSIM_TX_CTL_REQ_TX_STATUS;
598
599 if (info->flags & IEEE80211_TX_CTL_NO_ACK)
600 hwsim_flags |= HWSIM_TX_CTL_NO_ACK;
601
602 if (nla_put_u32(skb, HWSIM_ATTR_FLAGS, hwsim_flags))
603 goto nla_put_failure;
604
605 /* We get the tx control (rate and retries) info*/
606
607 for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
608 tx_attempts[i].idx = info->status.rates[i].idx;
609 tx_attempts[i].count = info->status.rates[i].count;
610 }
611
612 if (nla_put(skb, HWSIM_ATTR_TX_INFO,
613 sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
614 tx_attempts))
615 goto nla_put_failure;
616
617 /* We create a cookie to identify this skb */
618 if (nla_put_u64(skb, HWSIM_ATTR_COOKIE, (unsigned long) my_skb))
619 goto nla_put_failure;
620
621 genlmsg_end(skb, msg_head);
622 genlmsg_unicast(&init_net, skb, dst_pid);
623
624 /* Enqueue the packet */
625 skb_queue_tail(&data->pending, my_skb);
626 return;
627
628 nla_put_failure:
629 printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
630 }
631
632 static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
633 struct sk_buff *skb)
634 {
635 struct mac80211_hwsim_data *data = hw->priv, *data2;
636 bool ack = false;
637 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
638 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
639 struct ieee80211_rx_status rx_status;
640 struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
641
642 if (data->idle) {
643 wiphy_debug(hw->wiphy, "Trying to TX when idle - reject\n");
644 return false;
645 }
646
647 memset(&rx_status, 0, sizeof(rx_status));
648 rx_status.flag |= RX_FLAG_MACTIME_MPDU;
649 rx_status.freq = data->channel->center_freq;
650 rx_status.band = data->channel->band;
651 rx_status.rate_idx = info->control.rates[0].idx;
652 if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
653 rx_status.flag |= RX_FLAG_HT;
654 if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
655 rx_status.flag |= RX_FLAG_40MHZ;
656 if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
657 rx_status.flag |= RX_FLAG_SHORT_GI;
658 /* TODO: simulate real signal strength (and optional packet loss) */
659 rx_status.signal = data->power_level - 50;
660
661 if (data->ps != PS_DISABLED)
662 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
663
664 /* release the skb's source info */
665 skb_orphan(skb);
666 skb_dst_drop(skb);
667 skb->mark = 0;
668 secpath_reset(skb);
669 nf_reset(skb);
670
671 /* Copy skb to all enabled radios that are on the current frequency */
672 spin_lock(&hwsim_radio_lock);
673 list_for_each_entry(data2, &hwsim_radios, list) {
674 struct sk_buff *nskb;
675 struct ieee80211_mgmt *mgmt;
676
677 if (data == data2)
678 continue;
679
680 if (data2->idle || !data2->started ||
681 !hwsim_ps_rx_ok(data2, skb) || !data2->channel ||
682 data->channel->center_freq != data2->channel->center_freq ||
683 !(data->group & data2->group))
684 continue;
685
686 nskb = skb_copy(skb, GFP_ATOMIC);
687 if (nskb == NULL)
688 continue;
689
690 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
691 ack = true;
692
693 /* set bcn timestamp relative to receiver mactime */
694 rx_status.mactime =
695 le64_to_cpu(__mac80211_hwsim_get_tsf(data2));
696 mgmt = (struct ieee80211_mgmt *) nskb->data;
697 if (ieee80211_is_beacon(mgmt->frame_control) ||
698 ieee80211_is_probe_resp(mgmt->frame_control))
699 mgmt->u.beacon.timestamp = cpu_to_le64(
700 rx_status.mactime +
701 (data->tsf_offset - data2->tsf_offset) +
702 24 * 8 * 10 / txrate->bitrate);
703
704 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
705 ieee80211_rx_irqsafe(data2->hw, nskb);
706 }
707 spin_unlock(&hwsim_radio_lock);
708
709 return ack;
710 }
711
712 static void mac80211_hwsim_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
713 {
714 bool ack;
715 struct ieee80211_tx_info *txi;
716 u32 _pid;
717
718 mac80211_hwsim_monitor_rx(hw, skb);
719
720 if (skb->len < 10) {
721 /* Should not happen; just a sanity check for addr1 use */
722 dev_kfree_skb(skb);
723 return;
724 }
725
726 /* wmediumd mode check */
727 _pid = ACCESS_ONCE(wmediumd_pid);
728
729 if (_pid)
730 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
731
732 /* NO wmediumd detected, perfect medium simulation */
733 ack = mac80211_hwsim_tx_frame_no_nl(hw, skb);
734
735 if (ack && skb->len >= 16) {
736 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
737 mac80211_hwsim_monitor_ack(hw, hdr->addr2);
738 }
739
740 txi = IEEE80211_SKB_CB(skb);
741
742 if (txi->control.vif)
743 hwsim_check_magic(txi->control.vif);
744 if (txi->control.sta)
745 hwsim_check_sta_magic(txi->control.sta);
746
747 ieee80211_tx_info_clear_status(txi);
748
749 /* frame was transmitted at most favorable rate at first attempt */
750 txi->control.rates[0].count = 1;
751 txi->control.rates[1].idx = -1;
752
753 if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
754 txi->flags |= IEEE80211_TX_STAT_ACK;
755 ieee80211_tx_status_irqsafe(hw, skb);
756 }
757
758
759 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
760 {
761 struct mac80211_hwsim_data *data = hw->priv;
762 wiphy_debug(hw->wiphy, "%s\n", __func__);
763 data->started = true;
764 return 0;
765 }
766
767
768 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
769 {
770 struct mac80211_hwsim_data *data = hw->priv;
771 data->started = false;
772 del_timer(&data->beacon_timer);
773 wiphy_debug(hw->wiphy, "%s\n", __func__);
774 }
775
776
777 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
778 struct ieee80211_vif *vif)
779 {
780 wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
781 __func__, ieee80211_vif_type_p2p(vif),
782 vif->addr);
783 hwsim_set_magic(vif);
784 return 0;
785 }
786
787
788 static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
789 struct ieee80211_vif *vif,
790 enum nl80211_iftype newtype,
791 bool newp2p)
792 {
793 newtype = ieee80211_iftype_p2p(newtype, newp2p);
794 wiphy_debug(hw->wiphy,
795 "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
796 __func__, ieee80211_vif_type_p2p(vif),
797 newtype, vif->addr);
798 hwsim_check_magic(vif);
799
800 return 0;
801 }
802
803 static void mac80211_hwsim_remove_interface(
804 struct ieee80211_hw *hw, struct ieee80211_vif *vif)
805 {
806 wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
807 __func__, ieee80211_vif_type_p2p(vif),
808 vif->addr);
809 hwsim_check_magic(vif);
810 hwsim_clear_magic(vif);
811 }
812
813
814 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
815 struct ieee80211_vif *vif)
816 {
817 struct ieee80211_hw *hw = arg;
818 struct sk_buff *skb;
819 struct ieee80211_tx_info *info;
820 u32 _pid;
821
822 hwsim_check_magic(vif);
823
824 if (vif->type != NL80211_IFTYPE_AP &&
825 vif->type != NL80211_IFTYPE_MESH_POINT &&
826 vif->type != NL80211_IFTYPE_ADHOC)
827 return;
828
829 skb = ieee80211_beacon_get(hw, vif);
830 if (skb == NULL)
831 return;
832 info = IEEE80211_SKB_CB(skb);
833
834 mac80211_hwsim_monitor_rx(hw, skb);
835
836 /* wmediumd mode check */
837 _pid = ACCESS_ONCE(wmediumd_pid);
838
839 if (_pid)
840 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
841
842 mac80211_hwsim_tx_frame_no_nl(hw, skb);
843 dev_kfree_skb(skb);
844 }
845
846
847 static void mac80211_hwsim_beacon(unsigned long arg)
848 {
849 struct ieee80211_hw *hw = (struct ieee80211_hw *) arg;
850 struct mac80211_hwsim_data *data = hw->priv;
851
852 if (!data->started)
853 return;
854
855 ieee80211_iterate_active_interfaces_atomic(
856 hw, mac80211_hwsim_beacon_tx, hw);
857
858 data->beacon_timer.expires = jiffies + data->beacon_int;
859 add_timer(&data->beacon_timer);
860 }
861
862 static const char *hwsim_chantypes[] = {
863 [NL80211_CHAN_NO_HT] = "noht",
864 [NL80211_CHAN_HT20] = "ht20",
865 [NL80211_CHAN_HT40MINUS] = "ht40-",
866 [NL80211_CHAN_HT40PLUS] = "ht40+",
867 };
868
869 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
870 {
871 struct mac80211_hwsim_data *data = hw->priv;
872 struct ieee80211_conf *conf = &hw->conf;
873 static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
874 [IEEE80211_SMPS_AUTOMATIC] = "auto",
875 [IEEE80211_SMPS_OFF] = "off",
876 [IEEE80211_SMPS_STATIC] = "static",
877 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
878 };
879
880 wiphy_debug(hw->wiphy,
881 "%s (freq=%d/%s idle=%d ps=%d smps=%s)\n",
882 __func__,
883 conf->channel->center_freq,
884 hwsim_chantypes[conf->channel_type],
885 !!(conf->flags & IEEE80211_CONF_IDLE),
886 !!(conf->flags & IEEE80211_CONF_PS),
887 smps_modes[conf->smps_mode]);
888
889 data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
890
891 data->channel = conf->channel;
892 data->power_level = conf->power_level;
893 if (!data->started || !data->beacon_int)
894 del_timer(&data->beacon_timer);
895 else
896 mod_timer(&data->beacon_timer, jiffies + data->beacon_int);
897
898 return 0;
899 }
900
901
902 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
903 unsigned int changed_flags,
904 unsigned int *total_flags,u64 multicast)
905 {
906 struct mac80211_hwsim_data *data = hw->priv;
907
908 wiphy_debug(hw->wiphy, "%s\n", __func__);
909
910 data->rx_filter = 0;
911 if (*total_flags & FIF_PROMISC_IN_BSS)
912 data->rx_filter |= FIF_PROMISC_IN_BSS;
913 if (*total_flags & FIF_ALLMULTI)
914 data->rx_filter |= FIF_ALLMULTI;
915
916 *total_flags = data->rx_filter;
917 }
918
919 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
920 struct ieee80211_vif *vif,
921 struct ieee80211_bss_conf *info,
922 u32 changed)
923 {
924 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
925 struct mac80211_hwsim_data *data = hw->priv;
926
927 hwsim_check_magic(vif);
928
929 wiphy_debug(hw->wiphy, "%s(changed=0x%x)\n", __func__, changed);
930
931 if (changed & BSS_CHANGED_BSSID) {
932 wiphy_debug(hw->wiphy, "%s: BSSID changed: %pM\n",
933 __func__, info->bssid);
934 memcpy(vp->bssid, info->bssid, ETH_ALEN);
935 }
936
937 if (changed & BSS_CHANGED_ASSOC) {
938 wiphy_debug(hw->wiphy, " ASSOC: assoc=%d aid=%d\n",
939 info->assoc, info->aid);
940 vp->assoc = info->assoc;
941 vp->aid = info->aid;
942 }
943
944 if (changed & BSS_CHANGED_BEACON_INT) {
945 wiphy_debug(hw->wiphy, " BCNINT: %d\n", info->beacon_int);
946 data->beacon_int = 1024 * info->beacon_int / 1000 * HZ / 1000;
947 if (WARN_ON(!data->beacon_int))
948 data->beacon_int = 1;
949 if (data->started)
950 mod_timer(&data->beacon_timer,
951 jiffies + data->beacon_int);
952 }
953
954 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
955 wiphy_debug(hw->wiphy, " ERP_CTS_PROT: %d\n",
956 info->use_cts_prot);
957 }
958
959 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
960 wiphy_debug(hw->wiphy, " ERP_PREAMBLE: %d\n",
961 info->use_short_preamble);
962 }
963
964 if (changed & BSS_CHANGED_ERP_SLOT) {
965 wiphy_debug(hw->wiphy, " ERP_SLOT: %d\n", info->use_short_slot);
966 }
967
968 if (changed & BSS_CHANGED_HT) {
969 wiphy_debug(hw->wiphy, " HT: op_mode=0x%x, chantype=%s\n",
970 info->ht_operation_mode,
971 hwsim_chantypes[info->channel_type]);
972 }
973
974 if (changed & BSS_CHANGED_BASIC_RATES) {
975 wiphy_debug(hw->wiphy, " BASIC_RATES: 0x%llx\n",
976 (unsigned long long) info->basic_rates);
977 }
978 }
979
980 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
981 struct ieee80211_vif *vif,
982 struct ieee80211_sta *sta)
983 {
984 hwsim_check_magic(vif);
985 hwsim_set_sta_magic(sta);
986
987 return 0;
988 }
989
990 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
991 struct ieee80211_vif *vif,
992 struct ieee80211_sta *sta)
993 {
994 hwsim_check_magic(vif);
995 hwsim_clear_sta_magic(sta);
996
997 return 0;
998 }
999
1000 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
1001 struct ieee80211_vif *vif,
1002 enum sta_notify_cmd cmd,
1003 struct ieee80211_sta *sta)
1004 {
1005 hwsim_check_magic(vif);
1006
1007 switch (cmd) {
1008 case STA_NOTIFY_SLEEP:
1009 case STA_NOTIFY_AWAKE:
1010 /* TODO: make good use of these flags */
1011 break;
1012 default:
1013 WARN(1, "Invalid sta notify: %d\n", cmd);
1014 break;
1015 }
1016 }
1017
1018 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
1019 struct ieee80211_sta *sta,
1020 bool set)
1021 {
1022 hwsim_check_sta_magic(sta);
1023 return 0;
1024 }
1025
1026 static int mac80211_hwsim_conf_tx(
1027 struct ieee80211_hw *hw,
1028 struct ieee80211_vif *vif, u16 queue,
1029 const struct ieee80211_tx_queue_params *params)
1030 {
1031 wiphy_debug(hw->wiphy,
1032 "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
1033 __func__, queue,
1034 params->txop, params->cw_min,
1035 params->cw_max, params->aifs);
1036 return 0;
1037 }
1038
1039 static int mac80211_hwsim_get_survey(
1040 struct ieee80211_hw *hw, int idx,
1041 struct survey_info *survey)
1042 {
1043 struct ieee80211_conf *conf = &hw->conf;
1044
1045 wiphy_debug(hw->wiphy, "%s (idx=%d)\n", __func__, idx);
1046
1047 if (idx != 0)
1048 return -ENOENT;
1049
1050 /* Current channel */
1051 survey->channel = conf->channel;
1052
1053 /*
1054 * Magically conjured noise level --- this is only ok for simulated hardware.
1055 *
1056 * A real driver which cannot determine the real channel noise MUST NOT
1057 * report any noise, especially not a magically conjured one :-)
1058 */
1059 survey->filled = SURVEY_INFO_NOISE_DBM;
1060 survey->noise = -92;
1061
1062 return 0;
1063 }
1064
1065 #ifdef CONFIG_NL80211_TESTMODE
1066 /*
1067 * This section contains example code for using netlink
1068 * attributes with the testmode command in nl80211.
1069 */
1070
1071 /* These enums need to be kept in sync with userspace */
1072 enum hwsim_testmode_attr {
1073 __HWSIM_TM_ATTR_INVALID = 0,
1074 HWSIM_TM_ATTR_CMD = 1,
1075 HWSIM_TM_ATTR_PS = 2,
1076
1077 /* keep last */
1078 __HWSIM_TM_ATTR_AFTER_LAST,
1079 HWSIM_TM_ATTR_MAX = __HWSIM_TM_ATTR_AFTER_LAST - 1
1080 };
1081
1082 enum hwsim_testmode_cmd {
1083 HWSIM_TM_CMD_SET_PS = 0,
1084 HWSIM_TM_CMD_GET_PS = 1,
1085 HWSIM_TM_CMD_STOP_QUEUES = 2,
1086 HWSIM_TM_CMD_WAKE_QUEUES = 3,
1087 };
1088
1089 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
1090 [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
1091 [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
1092 };
1093
1094 static int hwsim_fops_ps_write(void *dat, u64 val);
1095
1096 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
1097 void *data, int len)
1098 {
1099 struct mac80211_hwsim_data *hwsim = hw->priv;
1100 struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
1101 struct sk_buff *skb;
1102 int err, ps;
1103
1104 err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
1105 hwsim_testmode_policy);
1106 if (err)
1107 return err;
1108
1109 if (!tb[HWSIM_TM_ATTR_CMD])
1110 return -EINVAL;
1111
1112 switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
1113 case HWSIM_TM_CMD_SET_PS:
1114 if (!tb[HWSIM_TM_ATTR_PS])
1115 return -EINVAL;
1116 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
1117 return hwsim_fops_ps_write(hwsim, ps);
1118 case HWSIM_TM_CMD_GET_PS:
1119 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
1120 nla_total_size(sizeof(u32)));
1121 if (!skb)
1122 return -ENOMEM;
1123 if (nla_put_u32(skb, HWSIM_TM_ATTR_PS, hwsim->ps))
1124 goto nla_put_failure;
1125 return cfg80211_testmode_reply(skb);
1126 case HWSIM_TM_CMD_STOP_QUEUES:
1127 ieee80211_stop_queues(hw);
1128 return 0;
1129 case HWSIM_TM_CMD_WAKE_QUEUES:
1130 ieee80211_wake_queues(hw);
1131 return 0;
1132 default:
1133 return -EOPNOTSUPP;
1134 }
1135
1136 nla_put_failure:
1137 kfree_skb(skb);
1138 return -ENOBUFS;
1139 }
1140 #endif
1141
1142 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
1143 struct ieee80211_vif *vif,
1144 enum ieee80211_ampdu_mlme_action action,
1145 struct ieee80211_sta *sta, u16 tid, u16 *ssn,
1146 u8 buf_size)
1147 {
1148 switch (action) {
1149 case IEEE80211_AMPDU_TX_START:
1150 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1151 break;
1152 case IEEE80211_AMPDU_TX_STOP:
1153 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1154 break;
1155 case IEEE80211_AMPDU_TX_OPERATIONAL:
1156 break;
1157 case IEEE80211_AMPDU_RX_START:
1158 case IEEE80211_AMPDU_RX_STOP:
1159 break;
1160 default:
1161 return -EOPNOTSUPP;
1162 }
1163
1164 return 0;
1165 }
1166
1167 static void mac80211_hwsim_flush(struct ieee80211_hw *hw, bool drop)
1168 {
1169 /* Not implemented, queues only on kernel side */
1170 }
1171
1172 struct hw_scan_done {
1173 struct delayed_work w;
1174 struct ieee80211_hw *hw;
1175 };
1176
1177 static void hw_scan_done(struct work_struct *work)
1178 {
1179 struct hw_scan_done *hsd =
1180 container_of(work, struct hw_scan_done, w.work);
1181
1182 ieee80211_scan_completed(hsd->hw, false);
1183 kfree(hsd);
1184 }
1185
1186 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
1187 struct ieee80211_vif *vif,
1188 struct cfg80211_scan_request *req)
1189 {
1190 struct hw_scan_done *hsd = kzalloc(sizeof(*hsd), GFP_KERNEL);
1191 int i;
1192
1193 if (!hsd)
1194 return -ENOMEM;
1195
1196 hsd->hw = hw;
1197 INIT_DELAYED_WORK(&hsd->w, hw_scan_done);
1198
1199 printk(KERN_DEBUG "hwsim hw_scan request\n");
1200 for (i = 0; i < req->n_channels; i++)
1201 printk(KERN_DEBUG "hwsim hw_scan freq %d\n",
1202 req->channels[i]->center_freq);
1203 print_hex_dump(KERN_DEBUG, "scan IEs: ", DUMP_PREFIX_OFFSET,
1204 16, 1, req->ie, req->ie_len, 1);
1205
1206 ieee80211_queue_delayed_work(hw, &hsd->w, 2 * HZ);
1207
1208 return 0;
1209 }
1210
1211 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw)
1212 {
1213 struct mac80211_hwsim_data *hwsim = hw->priv;
1214
1215 mutex_lock(&hwsim->mutex);
1216
1217 if (hwsim->scanning) {
1218 printk(KERN_DEBUG "two hwsim sw_scans detected!\n");
1219 goto out;
1220 }
1221
1222 printk(KERN_DEBUG "hwsim sw_scan request, prepping stuff\n");
1223 hwsim->scanning = true;
1224
1225 out:
1226 mutex_unlock(&hwsim->mutex);
1227 }
1228
1229 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw)
1230 {
1231 struct mac80211_hwsim_data *hwsim = hw->priv;
1232
1233 mutex_lock(&hwsim->mutex);
1234
1235 printk(KERN_DEBUG "hwsim sw_scan_complete\n");
1236 hwsim->scanning = false;
1237
1238 mutex_unlock(&hwsim->mutex);
1239 }
1240
1241 static struct ieee80211_ops mac80211_hwsim_ops =
1242 {
1243 .tx = mac80211_hwsim_tx,
1244 .start = mac80211_hwsim_start,
1245 .stop = mac80211_hwsim_stop,
1246 .add_interface = mac80211_hwsim_add_interface,
1247 .change_interface = mac80211_hwsim_change_interface,
1248 .remove_interface = mac80211_hwsim_remove_interface,
1249 .config = mac80211_hwsim_config,
1250 .configure_filter = mac80211_hwsim_configure_filter,
1251 .bss_info_changed = mac80211_hwsim_bss_info_changed,
1252 .sta_add = mac80211_hwsim_sta_add,
1253 .sta_remove = mac80211_hwsim_sta_remove,
1254 .sta_notify = mac80211_hwsim_sta_notify,
1255 .set_tim = mac80211_hwsim_set_tim,
1256 .conf_tx = mac80211_hwsim_conf_tx,
1257 .get_survey = mac80211_hwsim_get_survey,
1258 CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)
1259 .ampdu_action = mac80211_hwsim_ampdu_action,
1260 .sw_scan_start = mac80211_hwsim_sw_scan,
1261 .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
1262 .flush = mac80211_hwsim_flush,
1263 .get_tsf = mac80211_hwsim_get_tsf,
1264 .set_tsf = mac80211_hwsim_set_tsf,
1265 };
1266
1267
1268 static void mac80211_hwsim_free(void)
1269 {
1270 struct list_head tmplist, *i, *tmp;
1271 struct mac80211_hwsim_data *data, *tmpdata;
1272
1273 INIT_LIST_HEAD(&tmplist);
1274
1275 spin_lock_bh(&hwsim_radio_lock);
1276 list_for_each_safe(i, tmp, &hwsim_radios)
1277 list_move(i, &tmplist);
1278 spin_unlock_bh(&hwsim_radio_lock);
1279
1280 list_for_each_entry_safe(data, tmpdata, &tmplist, list) {
1281 debugfs_remove(data->debugfs_group);
1282 debugfs_remove(data->debugfs_ps);
1283 debugfs_remove(data->debugfs);
1284 ieee80211_unregister_hw(data->hw);
1285 device_unregister(data->dev);
1286 ieee80211_free_hw(data->hw);
1287 }
1288 class_destroy(hwsim_class);
1289 }
1290
1291
1292 static struct device_driver mac80211_hwsim_driver = {
1293 .name = "mac80211_hwsim"
1294 };
1295
1296 static const struct net_device_ops hwsim_netdev_ops = {
1297 .ndo_start_xmit = hwsim_mon_xmit,
1298 .ndo_change_mtu = eth_change_mtu,
1299 .ndo_set_mac_address = eth_mac_addr,
1300 .ndo_validate_addr = eth_validate_addr,
1301 };
1302
1303 static void hwsim_mon_setup(struct net_device *dev)
1304 {
1305 dev->netdev_ops = &hwsim_netdev_ops;
1306 dev->destructor = free_netdev;
1307 ether_setup(dev);
1308 dev->tx_queue_len = 0;
1309 dev->type = ARPHRD_IEEE80211_RADIOTAP;
1310 memset(dev->dev_addr, 0, ETH_ALEN);
1311 dev->dev_addr[0] = 0x12;
1312 }
1313
1314
1315 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
1316 {
1317 struct mac80211_hwsim_data *data = dat;
1318 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1319 struct sk_buff *skb;
1320 struct ieee80211_pspoll *pspoll;
1321 u32 _pid;
1322
1323 if (!vp->assoc)
1324 return;
1325
1326 wiphy_debug(data->hw->wiphy,
1327 "%s: send PS-Poll to %pM for aid %d\n",
1328 __func__, vp->bssid, vp->aid);
1329
1330 skb = dev_alloc_skb(sizeof(*pspoll));
1331 if (!skb)
1332 return;
1333 pspoll = (void *) skb_put(skb, sizeof(*pspoll));
1334 pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
1335 IEEE80211_STYPE_PSPOLL |
1336 IEEE80211_FCTL_PM);
1337 pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
1338 memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
1339 memcpy(pspoll->ta, mac, ETH_ALEN);
1340
1341 /* wmediumd mode check */
1342 _pid = ACCESS_ONCE(wmediumd_pid);
1343
1344 if (_pid)
1345 return mac80211_hwsim_tx_frame_nl(data->hw, skb, _pid);
1346
1347 if (!mac80211_hwsim_tx_frame_no_nl(data->hw, skb))
1348 printk(KERN_DEBUG "%s: PS-poll frame not ack'ed\n", __func__);
1349 dev_kfree_skb(skb);
1350 }
1351
1352
1353 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
1354 struct ieee80211_vif *vif, int ps)
1355 {
1356 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1357 struct sk_buff *skb;
1358 struct ieee80211_hdr *hdr;
1359 u32 _pid;
1360
1361 if (!vp->assoc)
1362 return;
1363
1364 wiphy_debug(data->hw->wiphy,
1365 "%s: send data::nullfunc to %pM ps=%d\n",
1366 __func__, vp->bssid, ps);
1367
1368 skb = dev_alloc_skb(sizeof(*hdr));
1369 if (!skb)
1370 return;
1371 hdr = (void *) skb_put(skb, sizeof(*hdr) - ETH_ALEN);
1372 hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
1373 IEEE80211_STYPE_NULLFUNC |
1374 (ps ? IEEE80211_FCTL_PM : 0));
1375 hdr->duration_id = cpu_to_le16(0);
1376 memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
1377 memcpy(hdr->addr2, mac, ETH_ALEN);
1378 memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
1379
1380 /* wmediumd mode check */
1381 _pid = ACCESS_ONCE(wmediumd_pid);
1382
1383 if (_pid)
1384 return mac80211_hwsim_tx_frame_nl(data->hw, skb, _pid);
1385
1386 if (!mac80211_hwsim_tx_frame_no_nl(data->hw, skb))
1387 printk(KERN_DEBUG "%s: nullfunc frame not ack'ed\n", __func__);
1388 dev_kfree_skb(skb);
1389 }
1390
1391
1392 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
1393 struct ieee80211_vif *vif)
1394 {
1395 struct mac80211_hwsim_data *data = dat;
1396 hwsim_send_nullfunc(data, mac, vif, 1);
1397 }
1398
1399
1400 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
1401 struct ieee80211_vif *vif)
1402 {
1403 struct mac80211_hwsim_data *data = dat;
1404 hwsim_send_nullfunc(data, mac, vif, 0);
1405 }
1406
1407
1408 static int hwsim_fops_ps_read(void *dat, u64 *val)
1409 {
1410 struct mac80211_hwsim_data *data = dat;
1411 *val = data->ps;
1412 return 0;
1413 }
1414
1415 static int hwsim_fops_ps_write(void *dat, u64 val)
1416 {
1417 struct mac80211_hwsim_data *data = dat;
1418 enum ps_mode old_ps;
1419
1420 if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
1421 val != PS_MANUAL_POLL)
1422 return -EINVAL;
1423
1424 old_ps = data->ps;
1425 data->ps = val;
1426
1427 if (val == PS_MANUAL_POLL) {
1428 ieee80211_iterate_active_interfaces(data->hw,
1429 hwsim_send_ps_poll, data);
1430 data->ps_poll_pending = true;
1431 } else if (old_ps == PS_DISABLED && val != PS_DISABLED) {
1432 ieee80211_iterate_active_interfaces(data->hw,
1433 hwsim_send_nullfunc_ps,
1434 data);
1435 } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
1436 ieee80211_iterate_active_interfaces(data->hw,
1437 hwsim_send_nullfunc_no_ps,
1438 data);
1439 }
1440
1441 return 0;
1442 }
1443
1444 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
1445 "%llu\n");
1446
1447
1448 static int hwsim_fops_group_read(void *dat, u64 *val)
1449 {
1450 struct mac80211_hwsim_data *data = dat;
1451 *val = data->group;
1452 return 0;
1453 }
1454
1455 static int hwsim_fops_group_write(void *dat, u64 val)
1456 {
1457 struct mac80211_hwsim_data *data = dat;
1458 data->group = val;
1459 return 0;
1460 }
1461
1462 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
1463 hwsim_fops_group_read, hwsim_fops_group_write,
1464 "%llx\n");
1465
1466 static struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(
1467 struct mac_address *addr)
1468 {
1469 struct mac80211_hwsim_data *data;
1470 bool _found = false;
1471
1472 spin_lock_bh(&hwsim_radio_lock);
1473 list_for_each_entry(data, &hwsim_radios, list) {
1474 if (memcmp(data->addresses[1].addr, addr,
1475 sizeof(struct mac_address)) == 0) {
1476 _found = true;
1477 break;
1478 }
1479 }
1480 spin_unlock_bh(&hwsim_radio_lock);
1481
1482 if (!_found)
1483 return NULL;
1484
1485 return data;
1486 }
1487
1488 static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
1489 struct genl_info *info)
1490 {
1491
1492 struct ieee80211_hdr *hdr;
1493 struct mac80211_hwsim_data *data2;
1494 struct ieee80211_tx_info *txi;
1495 struct hwsim_tx_rate *tx_attempts;
1496 unsigned long ret_skb_ptr;
1497 struct sk_buff *skb, *tmp;
1498 struct mac_address *src;
1499 unsigned int hwsim_flags;
1500
1501 int i;
1502 bool found = false;
1503
1504 if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
1505 !info->attrs[HWSIM_ATTR_FLAGS] ||
1506 !info->attrs[HWSIM_ATTR_COOKIE] ||
1507 !info->attrs[HWSIM_ATTR_TX_INFO])
1508 goto out;
1509
1510 src = (struct mac_address *)nla_data(
1511 info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
1512 hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
1513
1514 ret_skb_ptr = nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
1515
1516 data2 = get_hwsim_data_ref_from_addr(src);
1517
1518 if (data2 == NULL)
1519 goto out;
1520
1521 /* look for the skb matching the cookie passed back from user */
1522 skb_queue_walk_safe(&data2->pending, skb, tmp) {
1523 if ((unsigned long)skb == ret_skb_ptr) {
1524 skb_unlink(skb, &data2->pending);
1525 found = true;
1526 break;
1527 }
1528 }
1529
1530 /* not found */
1531 if (!found)
1532 goto out;
1533
1534 /* Tx info received because the frame was broadcasted on user space,
1535 so we get all the necessary info: tx attempts and skb control buff */
1536
1537 tx_attempts = (struct hwsim_tx_rate *)nla_data(
1538 info->attrs[HWSIM_ATTR_TX_INFO]);
1539
1540 /* now send back TX status */
1541 txi = IEEE80211_SKB_CB(skb);
1542
1543 if (txi->control.vif)
1544 hwsim_check_magic(txi->control.vif);
1545 if (txi->control.sta)
1546 hwsim_check_sta_magic(txi->control.sta);
1547
1548 ieee80211_tx_info_clear_status(txi);
1549
1550 for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
1551 txi->status.rates[i].idx = tx_attempts[i].idx;
1552 txi->status.rates[i].count = tx_attempts[i].count;
1553 /*txi->status.rates[i].flags = 0;*/
1554 }
1555
1556 txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
1557
1558 if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
1559 (hwsim_flags & HWSIM_TX_STAT_ACK)) {
1560 if (skb->len >= 16) {
1561 hdr = (struct ieee80211_hdr *) skb->data;
1562 mac80211_hwsim_monitor_ack(data2->hw, hdr->addr2);
1563 }
1564 txi->flags |= IEEE80211_TX_STAT_ACK;
1565 }
1566 ieee80211_tx_status_irqsafe(data2->hw, skb);
1567 return 0;
1568 out:
1569 return -EINVAL;
1570
1571 }
1572
1573 static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
1574 struct genl_info *info)
1575 {
1576
1577 struct mac80211_hwsim_data *data2;
1578 struct ieee80211_rx_status rx_status;
1579 struct mac_address *dst;
1580 int frame_data_len;
1581 char *frame_data;
1582 struct sk_buff *skb = NULL;
1583
1584 if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
1585 !info->attrs[HWSIM_ATTR_FRAME] ||
1586 !info->attrs[HWSIM_ATTR_RX_RATE] ||
1587 !info->attrs[HWSIM_ATTR_SIGNAL])
1588 goto out;
1589
1590 dst = (struct mac_address *)nla_data(
1591 info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
1592
1593 frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
1594 frame_data = (char *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
1595
1596 /* Allocate new skb here */
1597 skb = alloc_skb(frame_data_len, GFP_KERNEL);
1598 if (skb == NULL)
1599 goto err;
1600
1601 if (frame_data_len <= IEEE80211_MAX_DATA_LEN) {
1602 /* Copy the data */
1603 memcpy(skb_put(skb, frame_data_len), frame_data,
1604 frame_data_len);
1605 } else
1606 goto err;
1607
1608 data2 = get_hwsim_data_ref_from_addr(dst);
1609
1610 if (data2 == NULL)
1611 goto out;
1612
1613 /* check if radio is configured properly */
1614
1615 if (data2->idle || !data2->started || !data2->channel)
1616 goto out;
1617
1618 /*A frame is received from user space*/
1619 memset(&rx_status, 0, sizeof(rx_status));
1620 rx_status.freq = data2->channel->center_freq;
1621 rx_status.band = data2->channel->band;
1622 rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
1623 rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
1624
1625 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
1626 ieee80211_rx_irqsafe(data2->hw, skb);
1627
1628 return 0;
1629 err:
1630 printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
1631 goto out;
1632 out:
1633 dev_kfree_skb(skb);
1634 return -EINVAL;
1635 }
1636
1637 static int hwsim_register_received_nl(struct sk_buff *skb_2,
1638 struct genl_info *info)
1639 {
1640 if (info == NULL)
1641 goto out;
1642
1643 wmediumd_pid = info->snd_pid;
1644
1645 printk(KERN_DEBUG "mac80211_hwsim: received a REGISTER, "
1646 "switching to wmediumd mode with pid %d\n", info->snd_pid);
1647
1648 return 0;
1649 out:
1650 printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
1651 return -EINVAL;
1652 }
1653
1654 /* Generic Netlink operations array */
1655 static struct genl_ops hwsim_ops[] = {
1656 {
1657 .cmd = HWSIM_CMD_REGISTER,
1658 .policy = hwsim_genl_policy,
1659 .doit = hwsim_register_received_nl,
1660 .flags = GENL_ADMIN_PERM,
1661 },
1662 {
1663 .cmd = HWSIM_CMD_FRAME,
1664 .policy = hwsim_genl_policy,
1665 .doit = hwsim_cloned_frame_received_nl,
1666 },
1667 {
1668 .cmd = HWSIM_CMD_TX_INFO_FRAME,
1669 .policy = hwsim_genl_policy,
1670 .doit = hwsim_tx_info_frame_received_nl,
1671 },
1672 };
1673
1674 static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
1675 unsigned long state,
1676 void *_notify)
1677 {
1678 struct netlink_notify *notify = _notify;
1679
1680 if (state != NETLINK_URELEASE)
1681 return NOTIFY_DONE;
1682
1683 if (notify->pid == wmediumd_pid) {
1684 printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
1685 " socket, switching to perfect channel medium\n");
1686 wmediumd_pid = 0;
1687 }
1688 return NOTIFY_DONE;
1689
1690 }
1691
1692 static struct notifier_block hwsim_netlink_notifier = {
1693 .notifier_call = mac80211_hwsim_netlink_notify,
1694 };
1695
1696 static int hwsim_init_netlink(void)
1697 {
1698 int rc;
1699 printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
1700
1701 rc = genl_register_family_with_ops(&hwsim_genl_family,
1702 hwsim_ops, ARRAY_SIZE(hwsim_ops));
1703 if (rc)
1704 goto failure;
1705
1706 rc = netlink_register_notifier(&hwsim_netlink_notifier);
1707 if (rc)
1708 goto failure;
1709
1710 return 0;
1711
1712 failure:
1713 printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
1714 return -EINVAL;
1715 }
1716
1717 static void hwsim_exit_netlink(void)
1718 {
1719 int ret;
1720
1721 printk(KERN_INFO "mac80211_hwsim: closing netlink\n");
1722 /* unregister the notifier */
1723 netlink_unregister_notifier(&hwsim_netlink_notifier);
1724 /* unregister the family */
1725 ret = genl_unregister_family(&hwsim_genl_family);
1726 if (ret)
1727 printk(KERN_DEBUG "mac80211_hwsim: "
1728 "unregister family %i\n", ret);
1729 }
1730
1731 static const struct ieee80211_iface_limit hwsim_if_limits[] = {
1732 { .max = 1, .types = BIT(NL80211_IFTYPE_ADHOC) },
1733 { .max = 2048, .types = BIT(NL80211_IFTYPE_STATION) |
1734 BIT(NL80211_IFTYPE_P2P_CLIENT) |
1735 #ifdef CONFIG_MAC80211_MESH
1736 BIT(NL80211_IFTYPE_MESH_POINT) |
1737 #endif
1738 BIT(NL80211_IFTYPE_AP) |
1739 BIT(NL80211_IFTYPE_P2P_GO) },
1740 };
1741
1742 static const struct ieee80211_iface_combination hwsim_if_comb = {
1743 .limits = hwsim_if_limits,
1744 .n_limits = ARRAY_SIZE(hwsim_if_limits),
1745 .max_interfaces = 2048,
1746 .num_different_channels = 1,
1747 };
1748
1749 static int __init init_mac80211_hwsim(void)
1750 {
1751 int i, err = 0;
1752 u8 addr[ETH_ALEN];
1753 struct mac80211_hwsim_data *data;
1754 struct ieee80211_hw *hw;
1755 enum ieee80211_band band;
1756
1757 if (radios < 1 || radios > 100)
1758 return -EINVAL;
1759
1760 if (fake_hw_scan) {
1761 mac80211_hwsim_ops.hw_scan = mac80211_hwsim_hw_scan;
1762 mac80211_hwsim_ops.sw_scan_start = NULL;
1763 mac80211_hwsim_ops.sw_scan_complete = NULL;
1764 }
1765
1766 spin_lock_init(&hwsim_radio_lock);
1767 INIT_LIST_HEAD(&hwsim_radios);
1768
1769 hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
1770 if (IS_ERR(hwsim_class))
1771 return PTR_ERR(hwsim_class);
1772
1773 memset(addr, 0, ETH_ALEN);
1774 addr[0] = 0x02;
1775
1776 for (i = 0; i < radios; i++) {
1777 printk(KERN_DEBUG "mac80211_hwsim: Initializing radio %d\n",
1778 i);
1779 hw = ieee80211_alloc_hw(sizeof(*data), &mac80211_hwsim_ops);
1780 if (!hw) {
1781 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw "
1782 "failed\n");
1783 err = -ENOMEM;
1784 goto failed;
1785 }
1786 data = hw->priv;
1787 data->hw = hw;
1788
1789 data->dev = device_create(hwsim_class, NULL, 0, hw,
1790 "hwsim%d", i);
1791 if (IS_ERR(data->dev)) {
1792 printk(KERN_DEBUG
1793 "mac80211_hwsim: device_create "
1794 "failed (%ld)\n", PTR_ERR(data->dev));
1795 err = -ENOMEM;
1796 goto failed_drvdata;
1797 }
1798 data->dev->driver = &mac80211_hwsim_driver;
1799 skb_queue_head_init(&data->pending);
1800
1801 SET_IEEE80211_DEV(hw, data->dev);
1802 addr[3] = i >> 8;
1803 addr[4] = i;
1804 memcpy(data->addresses[0].addr, addr, ETH_ALEN);
1805 memcpy(data->addresses[1].addr, addr, ETH_ALEN);
1806 data->addresses[1].addr[0] |= 0x40;
1807 hw->wiphy->n_addresses = 2;
1808 hw->wiphy->addresses = data->addresses;
1809
1810 hw->wiphy->iface_combinations = &hwsim_if_comb;
1811 hw->wiphy->n_iface_combinations = 1;
1812
1813 if (fake_hw_scan) {
1814 hw->wiphy->max_scan_ssids = 255;
1815 hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
1816 }
1817
1818 hw->channel_change_time = 1;
1819 hw->queues = 4;
1820 hw->wiphy->interface_modes =
1821 BIT(NL80211_IFTYPE_STATION) |
1822 BIT(NL80211_IFTYPE_AP) |
1823 BIT(NL80211_IFTYPE_P2P_CLIENT) |
1824 BIT(NL80211_IFTYPE_P2P_GO) |
1825 BIT(NL80211_IFTYPE_ADHOC) |
1826 BIT(NL80211_IFTYPE_MESH_POINT);
1827
1828 hw->flags = IEEE80211_HW_MFP_CAPABLE |
1829 IEEE80211_HW_SIGNAL_DBM |
1830 IEEE80211_HW_SUPPORTS_STATIC_SMPS |
1831 IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
1832 IEEE80211_HW_AMPDU_AGGREGATION |
1833 IEEE80211_HW_WANT_MONITOR_VIF;
1834
1835 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS |
1836 WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL;
1837
1838 /* ask mac80211 to reserve space for magic */
1839 hw->vif_data_size = sizeof(struct hwsim_vif_priv);
1840 hw->sta_data_size = sizeof(struct hwsim_sta_priv);
1841
1842 memcpy(data->channels_2ghz, hwsim_channels_2ghz,
1843 sizeof(hwsim_channels_2ghz));
1844 memcpy(data->channels_5ghz, hwsim_channels_5ghz,
1845 sizeof(hwsim_channels_5ghz));
1846 memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
1847
1848 for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) {
1849 struct ieee80211_supported_band *sband = &data->bands[band];
1850 switch (band) {
1851 case IEEE80211_BAND_2GHZ:
1852 sband->channels = data->channels_2ghz;
1853 sband->n_channels =
1854 ARRAY_SIZE(hwsim_channels_2ghz);
1855 sband->bitrates = data->rates;
1856 sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
1857 break;
1858 case IEEE80211_BAND_5GHZ:
1859 sband->channels = data->channels_5ghz;
1860 sband->n_channels =
1861 ARRAY_SIZE(hwsim_channels_5ghz);
1862 sband->bitrates = data->rates + 4;
1863 sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
1864 break;
1865 default:
1866 continue;
1867 }
1868
1869 sband->ht_cap.ht_supported = true;
1870 sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
1871 IEEE80211_HT_CAP_GRN_FLD |
1872 IEEE80211_HT_CAP_SGI_40 |
1873 IEEE80211_HT_CAP_DSSSCCK40;
1874 sband->ht_cap.ampdu_factor = 0x3;
1875 sband->ht_cap.ampdu_density = 0x6;
1876 memset(&sband->ht_cap.mcs, 0,
1877 sizeof(sband->ht_cap.mcs));
1878 sband->ht_cap.mcs.rx_mask[0] = 0xff;
1879 sband->ht_cap.mcs.rx_mask[1] = 0xff;
1880 sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
1881
1882 hw->wiphy->bands[band] = sband;
1883 }
1884 /* By default all radios are belonging to the first group */
1885 data->group = 1;
1886 mutex_init(&data->mutex);
1887
1888 /* Enable frame retransmissions for lossy channels */
1889 hw->max_rates = 4;
1890 hw->max_rate_tries = 11;
1891
1892 /* Work to be done prior to ieee80211_register_hw() */
1893 switch (regtest) {
1894 case HWSIM_REGTEST_DISABLED:
1895 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
1896 case HWSIM_REGTEST_DRIVER_REG_ALL:
1897 case HWSIM_REGTEST_DIFF_COUNTRY:
1898 /*
1899 * Nothing to be done for driver regulatory domain
1900 * hints prior to ieee80211_register_hw()
1901 */
1902 break;
1903 case HWSIM_REGTEST_WORLD_ROAM:
1904 if (i == 0) {
1905 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1906 wiphy_apply_custom_regulatory(hw->wiphy,
1907 &hwsim_world_regdom_custom_01);
1908 }
1909 break;
1910 case HWSIM_REGTEST_CUSTOM_WORLD:
1911 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1912 wiphy_apply_custom_regulatory(hw->wiphy,
1913 &hwsim_world_regdom_custom_01);
1914 break;
1915 case HWSIM_REGTEST_CUSTOM_WORLD_2:
1916 if (i == 0) {
1917 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1918 wiphy_apply_custom_regulatory(hw->wiphy,
1919 &hwsim_world_regdom_custom_01);
1920 } else if (i == 1) {
1921 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1922 wiphy_apply_custom_regulatory(hw->wiphy,
1923 &hwsim_world_regdom_custom_02);
1924 }
1925 break;
1926 case HWSIM_REGTEST_STRICT_ALL:
1927 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1928 break;
1929 case HWSIM_REGTEST_STRICT_FOLLOW:
1930 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
1931 if (i == 0)
1932 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1933 break;
1934 case HWSIM_REGTEST_ALL:
1935 if (i == 0) {
1936 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1937 wiphy_apply_custom_regulatory(hw->wiphy,
1938 &hwsim_world_regdom_custom_01);
1939 } else if (i == 1) {
1940 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1941 wiphy_apply_custom_regulatory(hw->wiphy,
1942 &hwsim_world_regdom_custom_02);
1943 } else if (i == 4)
1944 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1945 break;
1946 default:
1947 break;
1948 }
1949
1950 /* give the regulatory workqueue a chance to run */
1951 if (regtest)
1952 schedule_timeout_interruptible(1);
1953 err = ieee80211_register_hw(hw);
1954 if (err < 0) {
1955 printk(KERN_DEBUG "mac80211_hwsim: "
1956 "ieee80211_register_hw failed (%d)\n", err);
1957 goto failed_hw;
1958 }
1959
1960 /* Work to be done after to ieee80211_register_hw() */
1961 switch (regtest) {
1962 case HWSIM_REGTEST_WORLD_ROAM:
1963 case HWSIM_REGTEST_DISABLED:
1964 break;
1965 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
1966 if (!i)
1967 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1968 break;
1969 case HWSIM_REGTEST_DRIVER_REG_ALL:
1970 case HWSIM_REGTEST_STRICT_ALL:
1971 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1972 break;
1973 case HWSIM_REGTEST_DIFF_COUNTRY:
1974 if (i < ARRAY_SIZE(hwsim_alpha2s))
1975 regulatory_hint(hw->wiphy, hwsim_alpha2s[i]);
1976 break;
1977 case HWSIM_REGTEST_CUSTOM_WORLD:
1978 case HWSIM_REGTEST_CUSTOM_WORLD_2:
1979 /*
1980 * Nothing to be done for custom world regulatory
1981 * domains after to ieee80211_register_hw
1982 */
1983 break;
1984 case HWSIM_REGTEST_STRICT_FOLLOW:
1985 if (i == 0)
1986 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1987 break;
1988 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
1989 if (i == 0)
1990 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1991 else if (i == 1)
1992 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
1993 break;
1994 case HWSIM_REGTEST_ALL:
1995 if (i == 2)
1996 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1997 else if (i == 3)
1998 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
1999 else if (i == 4)
2000 regulatory_hint(hw->wiphy, hwsim_alpha2s[2]);
2001 break;
2002 default:
2003 break;
2004 }
2005
2006 wiphy_debug(hw->wiphy, "hwaddr %pm registered\n",
2007 hw->wiphy->perm_addr);
2008
2009 data->debugfs = debugfs_create_dir("hwsim",
2010 hw->wiphy->debugfsdir);
2011 data->debugfs_ps = debugfs_create_file("ps", 0666,
2012 data->debugfs, data,
2013 &hwsim_fops_ps);
2014 data->debugfs_group = debugfs_create_file("group", 0666,
2015 data->debugfs, data,
2016 &hwsim_fops_group);
2017
2018 setup_timer(&data->beacon_timer, mac80211_hwsim_beacon,
2019 (unsigned long) hw);
2020
2021 list_add_tail(&data->list, &hwsim_radios);
2022 }
2023
2024 hwsim_mon = alloc_netdev(0, "hwsim%d", hwsim_mon_setup);
2025 if (hwsim_mon == NULL)
2026 goto failed;
2027
2028 rtnl_lock();
2029
2030 err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
2031 if (err < 0)
2032 goto failed_mon;
2033
2034
2035 err = register_netdevice(hwsim_mon);
2036 if (err < 0)
2037 goto failed_mon;
2038
2039 rtnl_unlock();
2040
2041 err = hwsim_init_netlink();
2042 if (err < 0)
2043 goto failed_nl;
2044
2045 return 0;
2046
2047 failed_nl:
2048 printk(KERN_DEBUG "mac_80211_hwsim: failed initializing netlink\n");
2049 return err;
2050
2051 failed_mon:
2052 rtnl_unlock();
2053 free_netdev(hwsim_mon);
2054 mac80211_hwsim_free();
2055 return err;
2056
2057 failed_hw:
2058 device_unregister(data->dev);
2059 failed_drvdata:
2060 ieee80211_free_hw(hw);
2061 failed:
2062 mac80211_hwsim_free();
2063 return err;
2064 }
2065
2066
2067 static void __exit exit_mac80211_hwsim(void)
2068 {
2069 printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
2070
2071 hwsim_exit_netlink();
2072
2073 mac80211_hwsim_free();
2074 unregister_netdev(hwsim_mon);
2075 }
2076
2077
2078 module_init(init_mac80211_hwsim);
2079 module_exit(exit_mac80211_hwsim);
Linux kernel - Deliverables
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