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mac80211: make remain_on_channel() op pass vif param
[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_portid;
42
43 static int radios = 2;
44 module_param(radios, int, 0444);
45 MODULE_PARM_DESC(radios, "Number of simulated radios");
46
47 static int channels = 1;
48 module_param(channels, int, 0444);
49 MODULE_PARM_DESC(channels, "Number of concurrent channels");
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(vp->magic != HWSIM_VIF_MAGIC,
170 "Invalid VIF (%p) magic %#x, %pM, %d/%d\n",
171 vif, vp->magic, vif->addr, vif->type, vif->p2p);
172 }
173
174 static inline void hwsim_set_magic(struct ieee80211_vif *vif)
175 {
176 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
177 vp->magic = HWSIM_VIF_MAGIC;
178 }
179
180 static inline void hwsim_clear_magic(struct ieee80211_vif *vif)
181 {
182 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
183 vp->magic = 0;
184 }
185
186 struct hwsim_sta_priv {
187 u32 magic;
188 };
189
190 #define HWSIM_STA_MAGIC 0x6d537749
191
192 static inline void hwsim_check_sta_magic(struct ieee80211_sta *sta)
193 {
194 struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
195 WARN_ON(sp->magic != HWSIM_STA_MAGIC);
196 }
197
198 static inline void hwsim_set_sta_magic(struct ieee80211_sta *sta)
199 {
200 struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
201 sp->magic = HWSIM_STA_MAGIC;
202 }
203
204 static inline void hwsim_clear_sta_magic(struct ieee80211_sta *sta)
205 {
206 struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
207 sp->magic = 0;
208 }
209
210 struct hwsim_chanctx_priv {
211 u32 magic;
212 };
213
214 #define HWSIM_CHANCTX_MAGIC 0x6d53774a
215
216 static inline void hwsim_check_chanctx_magic(struct ieee80211_chanctx_conf *c)
217 {
218 struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
219 WARN_ON(cp->magic != HWSIM_CHANCTX_MAGIC);
220 }
221
222 static inline void hwsim_set_chanctx_magic(struct ieee80211_chanctx_conf *c)
223 {
224 struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
225 cp->magic = HWSIM_CHANCTX_MAGIC;
226 }
227
228 static inline void hwsim_clear_chanctx_magic(struct ieee80211_chanctx_conf *c)
229 {
230 struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
231 cp->magic = 0;
232 }
233
234 static struct class *hwsim_class;
235
236 static struct net_device *hwsim_mon; /* global monitor netdev */
237
238 #define CHAN2G(_freq) { \
239 .band = IEEE80211_BAND_2GHZ, \
240 .center_freq = (_freq), \
241 .hw_value = (_freq), \
242 .max_power = 20, \
243 }
244
245 #define CHAN5G(_freq) { \
246 .band = IEEE80211_BAND_5GHZ, \
247 .center_freq = (_freq), \
248 .hw_value = (_freq), \
249 .max_power = 20, \
250 }
251
252 static const struct ieee80211_channel hwsim_channels_2ghz[] = {
253 CHAN2G(2412), /* Channel 1 */
254 CHAN2G(2417), /* Channel 2 */
255 CHAN2G(2422), /* Channel 3 */
256 CHAN2G(2427), /* Channel 4 */
257 CHAN2G(2432), /* Channel 5 */
258 CHAN2G(2437), /* Channel 6 */
259 CHAN2G(2442), /* Channel 7 */
260 CHAN2G(2447), /* Channel 8 */
261 CHAN2G(2452), /* Channel 9 */
262 CHAN2G(2457), /* Channel 10 */
263 CHAN2G(2462), /* Channel 11 */
264 CHAN2G(2467), /* Channel 12 */
265 CHAN2G(2472), /* Channel 13 */
266 CHAN2G(2484), /* Channel 14 */
267 };
268
269 static const struct ieee80211_channel hwsim_channels_5ghz[] = {
270 CHAN5G(5180), /* Channel 36 */
271 CHAN5G(5200), /* Channel 40 */
272 CHAN5G(5220), /* Channel 44 */
273 CHAN5G(5240), /* Channel 48 */
274
275 CHAN5G(5260), /* Channel 52 */
276 CHAN5G(5280), /* Channel 56 */
277 CHAN5G(5300), /* Channel 60 */
278 CHAN5G(5320), /* Channel 64 */
279
280 CHAN5G(5500), /* Channel 100 */
281 CHAN5G(5520), /* Channel 104 */
282 CHAN5G(5540), /* Channel 108 */
283 CHAN5G(5560), /* Channel 112 */
284 CHAN5G(5580), /* Channel 116 */
285 CHAN5G(5600), /* Channel 120 */
286 CHAN5G(5620), /* Channel 124 */
287 CHAN5G(5640), /* Channel 128 */
288 CHAN5G(5660), /* Channel 132 */
289 CHAN5G(5680), /* Channel 136 */
290 CHAN5G(5700), /* Channel 140 */
291
292 CHAN5G(5745), /* Channel 149 */
293 CHAN5G(5765), /* Channel 153 */
294 CHAN5G(5785), /* Channel 157 */
295 CHAN5G(5805), /* Channel 161 */
296 CHAN5G(5825), /* Channel 165 */
297 };
298
299 static const struct ieee80211_rate hwsim_rates[] = {
300 { .bitrate = 10 },
301 { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
302 { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
303 { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
304 { .bitrate = 60 },
305 { .bitrate = 90 },
306 { .bitrate = 120 },
307 { .bitrate = 180 },
308 { .bitrate = 240 },
309 { .bitrate = 360 },
310 { .bitrate = 480 },
311 { .bitrate = 540 }
312 };
313
314 static spinlock_t hwsim_radio_lock;
315 static struct list_head hwsim_radios;
316
317 struct mac80211_hwsim_data {
318 struct list_head list;
319 struct ieee80211_hw *hw;
320 struct device *dev;
321 struct ieee80211_supported_band bands[IEEE80211_NUM_BANDS];
322 struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)];
323 struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)];
324 struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
325
326 struct mac_address addresses[2];
327
328 struct ieee80211_channel *tmp_chan;
329 struct delayed_work roc_done;
330 struct delayed_work hw_scan;
331 struct cfg80211_scan_request *hw_scan_request;
332 struct ieee80211_vif *hw_scan_vif;
333 int scan_chan_idx;
334
335 struct ieee80211_channel *channel;
336 unsigned long beacon_int; /* in jiffies unit */
337 unsigned int rx_filter;
338 bool started, idle, scanning;
339 struct mutex mutex;
340 struct timer_list beacon_timer;
341 enum ps_mode {
342 PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
343 } ps;
344 bool ps_poll_pending;
345 struct dentry *debugfs;
346 struct dentry *debugfs_ps;
347
348 struct sk_buff_head pending; /* packets pending */
349 /*
350 * Only radios in the same group can communicate together (the
351 * channel has to match too). Each bit represents a group. A
352 * radio can be in more then one group.
353 */
354 u64 group;
355 struct dentry *debugfs_group;
356
357 int power_level;
358
359 /* difference between this hw's clock and the real clock, in usecs */
360 u64 tsf_offset;
361 };
362
363
364 struct hwsim_radiotap_hdr {
365 struct ieee80211_radiotap_header hdr;
366 __le64 rt_tsft;
367 u8 rt_flags;
368 u8 rt_rate;
369 __le16 rt_channel;
370 __le16 rt_chbitmask;
371 } __packed;
372
373 /* MAC80211_HWSIM netlinf family */
374 static struct genl_family hwsim_genl_family = {
375 .id = GENL_ID_GENERATE,
376 .hdrsize = 0,
377 .name = "MAC80211_HWSIM",
378 .version = 1,
379 .maxattr = HWSIM_ATTR_MAX,
380 };
381
382 /* MAC80211_HWSIM netlink policy */
383
384 static struct nla_policy hwsim_genl_policy[HWSIM_ATTR_MAX + 1] = {
385 [HWSIM_ATTR_ADDR_RECEIVER] = { .type = NLA_UNSPEC,
386 .len = 6*sizeof(u8) },
387 [HWSIM_ATTR_ADDR_TRANSMITTER] = { .type = NLA_UNSPEC,
388 .len = 6*sizeof(u8) },
389 [HWSIM_ATTR_FRAME] = { .type = NLA_BINARY,
390 .len = IEEE80211_MAX_DATA_LEN },
391 [HWSIM_ATTR_FLAGS] = { .type = NLA_U32 },
392 [HWSIM_ATTR_RX_RATE] = { .type = NLA_U32 },
393 [HWSIM_ATTR_SIGNAL] = { .type = NLA_U32 },
394 [HWSIM_ATTR_TX_INFO] = { .type = NLA_UNSPEC,
395 .len = IEEE80211_TX_MAX_RATES*sizeof(
396 struct hwsim_tx_rate)},
397 [HWSIM_ATTR_COOKIE] = { .type = NLA_U64 },
398 };
399
400 static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
401 struct net_device *dev)
402 {
403 /* TODO: allow packet injection */
404 dev_kfree_skb(skb);
405 return NETDEV_TX_OK;
406 }
407
408 static __le64 __mac80211_hwsim_get_tsf(struct mac80211_hwsim_data *data)
409 {
410 struct timeval tv = ktime_to_timeval(ktime_get_real());
411 u64 now = tv.tv_sec * USEC_PER_SEC + tv.tv_usec;
412 return cpu_to_le64(now + data->tsf_offset);
413 }
414
415 static u64 mac80211_hwsim_get_tsf(struct ieee80211_hw *hw,
416 struct ieee80211_vif *vif)
417 {
418 struct mac80211_hwsim_data *data = hw->priv;
419 return le64_to_cpu(__mac80211_hwsim_get_tsf(data));
420 }
421
422 static void mac80211_hwsim_set_tsf(struct ieee80211_hw *hw,
423 struct ieee80211_vif *vif, u64 tsf)
424 {
425 struct mac80211_hwsim_data *data = hw->priv;
426 struct timeval tv = ktime_to_timeval(ktime_get_real());
427 u64 now = tv.tv_sec * USEC_PER_SEC + tv.tv_usec;
428 data->tsf_offset = tsf - now;
429 }
430
431 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
432 struct sk_buff *tx_skb,
433 struct ieee80211_channel *chan)
434 {
435 struct mac80211_hwsim_data *data = hw->priv;
436 struct sk_buff *skb;
437 struct hwsim_radiotap_hdr *hdr;
438 u16 flags;
439 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
440 struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
441
442 if (!netif_running(hwsim_mon))
443 return;
444
445 skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
446 if (skb == NULL)
447 return;
448
449 hdr = (struct hwsim_radiotap_hdr *) skb_push(skb, sizeof(*hdr));
450 hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
451 hdr->hdr.it_pad = 0;
452 hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
453 hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
454 (1 << IEEE80211_RADIOTAP_RATE) |
455 (1 << IEEE80211_RADIOTAP_TSFT) |
456 (1 << IEEE80211_RADIOTAP_CHANNEL));
457 hdr->rt_tsft = __mac80211_hwsim_get_tsf(data);
458 hdr->rt_flags = 0;
459 hdr->rt_rate = txrate->bitrate / 5;
460 hdr->rt_channel = cpu_to_le16(chan->center_freq);
461 flags = IEEE80211_CHAN_2GHZ;
462 if (txrate->flags & IEEE80211_RATE_ERP_G)
463 flags |= IEEE80211_CHAN_OFDM;
464 else
465 flags |= IEEE80211_CHAN_CCK;
466 hdr->rt_chbitmask = cpu_to_le16(flags);
467
468 skb->dev = hwsim_mon;
469 skb_set_mac_header(skb, 0);
470 skb->ip_summed = CHECKSUM_UNNECESSARY;
471 skb->pkt_type = PACKET_OTHERHOST;
472 skb->protocol = htons(ETH_P_802_2);
473 memset(skb->cb, 0, sizeof(skb->cb));
474 netif_rx(skb);
475 }
476
477
478 static void mac80211_hwsim_monitor_ack(struct ieee80211_channel *chan,
479 const u8 *addr)
480 {
481 struct sk_buff *skb;
482 struct hwsim_radiotap_hdr *hdr;
483 u16 flags;
484 struct ieee80211_hdr *hdr11;
485
486 if (!netif_running(hwsim_mon))
487 return;
488
489 skb = dev_alloc_skb(100);
490 if (skb == NULL)
491 return;
492
493 hdr = (struct hwsim_radiotap_hdr *) skb_put(skb, sizeof(*hdr));
494 hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
495 hdr->hdr.it_pad = 0;
496 hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
497 hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
498 (1 << IEEE80211_RADIOTAP_CHANNEL));
499 hdr->rt_flags = 0;
500 hdr->rt_rate = 0;
501 hdr->rt_channel = cpu_to_le16(chan->center_freq);
502 flags = IEEE80211_CHAN_2GHZ;
503 hdr->rt_chbitmask = cpu_to_le16(flags);
504
505 hdr11 = (struct ieee80211_hdr *) skb_put(skb, 10);
506 hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
507 IEEE80211_STYPE_ACK);
508 hdr11->duration_id = cpu_to_le16(0);
509 memcpy(hdr11->addr1, addr, ETH_ALEN);
510
511 skb->dev = hwsim_mon;
512 skb_set_mac_header(skb, 0);
513 skb->ip_summed = CHECKSUM_UNNECESSARY;
514 skb->pkt_type = PACKET_OTHERHOST;
515 skb->protocol = htons(ETH_P_802_2);
516 memset(skb->cb, 0, sizeof(skb->cb));
517 netif_rx(skb);
518 }
519
520
521 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
522 struct sk_buff *skb)
523 {
524 switch (data->ps) {
525 case PS_DISABLED:
526 return true;
527 case PS_ENABLED:
528 return false;
529 case PS_AUTO_POLL:
530 /* TODO: accept (some) Beacons by default and other frames only
531 * if pending PS-Poll has been sent */
532 return true;
533 case PS_MANUAL_POLL:
534 /* Allow unicast frames to own address if there is a pending
535 * PS-Poll */
536 if (data->ps_poll_pending &&
537 memcmp(data->hw->wiphy->perm_addr, skb->data + 4,
538 ETH_ALEN) == 0) {
539 data->ps_poll_pending = false;
540 return true;
541 }
542 return false;
543 }
544
545 return true;
546 }
547
548
549 struct mac80211_hwsim_addr_match_data {
550 bool ret;
551 const u8 *addr;
552 };
553
554 static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
555 struct ieee80211_vif *vif)
556 {
557 struct mac80211_hwsim_addr_match_data *md = data;
558 if (memcmp(mac, md->addr, ETH_ALEN) == 0)
559 md->ret = true;
560 }
561
562
563 static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
564 const u8 *addr)
565 {
566 struct mac80211_hwsim_addr_match_data md;
567
568 if (memcmp(addr, data->hw->wiphy->perm_addr, ETH_ALEN) == 0)
569 return true;
570
571 md.ret = false;
572 md.addr = addr;
573 ieee80211_iterate_active_interfaces_atomic(data->hw,
574 IEEE80211_IFACE_ITER_NORMAL,
575 mac80211_hwsim_addr_iter,
576 &md);
577
578 return md.ret;
579 }
580
581 static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
582 struct sk_buff *my_skb,
583 int dst_portid)
584 {
585 struct sk_buff *skb;
586 struct mac80211_hwsim_data *data = hw->priv;
587 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) my_skb->data;
588 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(my_skb);
589 void *msg_head;
590 unsigned int hwsim_flags = 0;
591 int i;
592 struct hwsim_tx_rate tx_attempts[IEEE80211_TX_MAX_RATES];
593
594 if (data->ps != PS_DISABLED)
595 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
596 /* If the queue contains MAX_QUEUE skb's drop some */
597 if (skb_queue_len(&data->pending) >= MAX_QUEUE) {
598 /* Droping until WARN_QUEUE level */
599 while (skb_queue_len(&data->pending) >= WARN_QUEUE)
600 skb_dequeue(&data->pending);
601 }
602
603 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_ATOMIC);
604 if (skb == NULL)
605 goto nla_put_failure;
606
607 msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
608 HWSIM_CMD_FRAME);
609 if (msg_head == NULL) {
610 printk(KERN_DEBUG "mac80211_hwsim: problem with msg_head\n");
611 goto nla_put_failure;
612 }
613
614 if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
615 sizeof(struct mac_address), data->addresses[1].addr))
616 goto nla_put_failure;
617
618 /* We get the skb->data */
619 if (nla_put(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data))
620 goto nla_put_failure;
621
622 /* We get the flags for this transmission, and we translate them to
623 wmediumd flags */
624
625 if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
626 hwsim_flags |= HWSIM_TX_CTL_REQ_TX_STATUS;
627
628 if (info->flags & IEEE80211_TX_CTL_NO_ACK)
629 hwsim_flags |= HWSIM_TX_CTL_NO_ACK;
630
631 if (nla_put_u32(skb, HWSIM_ATTR_FLAGS, hwsim_flags))
632 goto nla_put_failure;
633
634 /* We get the tx control (rate and retries) info*/
635
636 for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
637 tx_attempts[i].idx = info->status.rates[i].idx;
638 tx_attempts[i].count = info->status.rates[i].count;
639 }
640
641 if (nla_put(skb, HWSIM_ATTR_TX_INFO,
642 sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
643 tx_attempts))
644 goto nla_put_failure;
645
646 /* We create a cookie to identify this skb */
647 if (nla_put_u64(skb, HWSIM_ATTR_COOKIE, (unsigned long) my_skb))
648 goto nla_put_failure;
649
650 genlmsg_end(skb, msg_head);
651 genlmsg_unicast(&init_net, skb, dst_portid);
652
653 /* Enqueue the packet */
654 skb_queue_tail(&data->pending, my_skb);
655 return;
656
657 nla_put_failure:
658 printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
659 }
660
661 static bool hwsim_chans_compat(struct ieee80211_channel *c1,
662 struct ieee80211_channel *c2)
663 {
664 if (!c1 || !c2)
665 return false;
666
667 return c1->center_freq == c2->center_freq;
668 }
669
670 struct tx_iter_data {
671 struct ieee80211_channel *channel;
672 bool receive;
673 };
674
675 static void mac80211_hwsim_tx_iter(void *_data, u8 *addr,
676 struct ieee80211_vif *vif)
677 {
678 struct tx_iter_data *data = _data;
679
680 if (!vif->chanctx_conf)
681 return;
682
683 if (!hwsim_chans_compat(data->channel,
684 rcu_dereference(vif->chanctx_conf)->channel))
685 return;
686
687 data->receive = true;
688 }
689
690 static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
691 struct sk_buff *skb,
692 struct ieee80211_channel *chan)
693 {
694 struct mac80211_hwsim_data *data = hw->priv, *data2;
695 bool ack = false;
696 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
697 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
698 struct ieee80211_rx_status rx_status;
699 struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
700
701 memset(&rx_status, 0, sizeof(rx_status));
702 rx_status.flag |= RX_FLAG_MACTIME_START;
703 rx_status.freq = chan->center_freq;
704 rx_status.band = chan->band;
705 rx_status.rate_idx = info->control.rates[0].idx;
706 if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
707 rx_status.flag |= RX_FLAG_HT;
708 if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
709 rx_status.flag |= RX_FLAG_40MHZ;
710 if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
711 rx_status.flag |= RX_FLAG_SHORT_GI;
712 /* TODO: simulate real signal strength (and optional packet loss) */
713 rx_status.signal = data->power_level - 50;
714
715 if (data->ps != PS_DISABLED)
716 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
717
718 /* release the skb's source info */
719 skb_orphan(skb);
720 skb_dst_drop(skb);
721 skb->mark = 0;
722 secpath_reset(skb);
723 nf_reset(skb);
724
725 /* Copy skb to all enabled radios that are on the current frequency */
726 spin_lock(&hwsim_radio_lock);
727 list_for_each_entry(data2, &hwsim_radios, list) {
728 struct sk_buff *nskb;
729 struct ieee80211_mgmt *mgmt;
730 struct tx_iter_data tx_iter_data = {
731 .receive = false,
732 .channel = chan,
733 };
734
735 if (data == data2)
736 continue;
737
738 if (!data2->started || (data2->idle && !data2->tmp_chan) ||
739 !hwsim_ps_rx_ok(data2, skb))
740 continue;
741
742 if (!(data->group & data2->group))
743 continue;
744
745 if (!hwsim_chans_compat(chan, data2->tmp_chan) &&
746 !hwsim_chans_compat(chan, data2->channel)) {
747 ieee80211_iterate_active_interfaces_atomic(
748 data2->hw, IEEE80211_IFACE_ITER_NORMAL,
749 mac80211_hwsim_tx_iter, &tx_iter_data);
750 if (!tx_iter_data.receive)
751 continue;
752 }
753
754 /*
755 * reserve some space for our vendor and the normal
756 * radiotap header, since we're copying anyway
757 */
758 nskb = skb_copy_expand(skb, 64, 0, GFP_ATOMIC);
759 if (nskb == NULL)
760 continue;
761
762 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
763 ack = true;
764
765 /* set bcn timestamp relative to receiver mactime */
766 rx_status.mactime =
767 le64_to_cpu(__mac80211_hwsim_get_tsf(data2));
768 mgmt = (struct ieee80211_mgmt *) nskb->data;
769 if (ieee80211_is_beacon(mgmt->frame_control) ||
770 ieee80211_is_probe_resp(mgmt->frame_control))
771 mgmt->u.beacon.timestamp = cpu_to_le64(
772 rx_status.mactime +
773 (data->tsf_offset - data2->tsf_offset) +
774 24 * 8 * 10 / txrate->bitrate);
775
776 #if 0
777 /*
778 * Don't enable this code by default as the OUI 00:00:00
779 * is registered to Xerox so we shouldn't use it here, it
780 * might find its way into pcap files.
781 * Note that this code requires the headroom in the SKB
782 * that was allocated earlier.
783 */
784 rx_status.vendor_radiotap_oui[0] = 0x00;
785 rx_status.vendor_radiotap_oui[1] = 0x00;
786 rx_status.vendor_radiotap_oui[2] = 0x00;
787 rx_status.vendor_radiotap_subns = 127;
788 /*
789 * Radiotap vendor namespaces can (and should) also be
790 * split into fields by using the standard radiotap
791 * presence bitmap mechanism. Use just BIT(0) here for
792 * the presence bitmap.
793 */
794 rx_status.vendor_radiotap_bitmap = BIT(0);
795 /* We have 8 bytes of (dummy) data */
796 rx_status.vendor_radiotap_len = 8;
797 /* For testing, also require it to be aligned */
798 rx_status.vendor_radiotap_align = 8;
799 /* push the data */
800 memcpy(skb_push(nskb, 8), "ABCDEFGH", 8);
801 #endif
802
803 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
804 ieee80211_rx_irqsafe(data2->hw, nskb);
805 }
806 spin_unlock(&hwsim_radio_lock);
807
808 return ack;
809 }
810
811 static void mac80211_hwsim_tx(struct ieee80211_hw *hw,
812 struct ieee80211_tx_control *control,
813 struct sk_buff *skb)
814 {
815 struct mac80211_hwsim_data *data = hw->priv;
816 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
817 struct ieee80211_chanctx_conf *chanctx_conf;
818 struct ieee80211_channel *channel;
819 bool ack;
820 u32 _portid;
821
822 if (WARN_ON(skb->len < 10)) {
823 /* Should not happen; just a sanity check for addr1 use */
824 dev_kfree_skb(skb);
825 return;
826 }
827
828 if (channels == 1) {
829 channel = data->channel;
830 } else if (txi->hw_queue == 4) {
831 channel = data->tmp_chan;
832 } else {
833 chanctx_conf = rcu_dereference(txi->control.vif->chanctx_conf);
834 if (chanctx_conf)
835 channel = chanctx_conf->channel;
836 else
837 channel = NULL;
838 }
839
840 if (WARN(!channel, "TX w/o channel - queue = %d\n", txi->hw_queue)) {
841 dev_kfree_skb(skb);
842 return;
843 }
844
845 if (data->idle && !data->tmp_chan) {
846 wiphy_debug(hw->wiphy, "Trying to TX when idle - reject\n");
847 dev_kfree_skb(skb);
848 return;
849 }
850
851 if (txi->control.vif)
852 hwsim_check_magic(txi->control.vif);
853 if (control->sta)
854 hwsim_check_sta_magic(control->sta);
855
856 txi->rate_driver_data[0] = channel;
857
858 mac80211_hwsim_monitor_rx(hw, skb, channel);
859
860 /* wmediumd mode check */
861 _portid = ACCESS_ONCE(wmediumd_portid);
862
863 if (_portid)
864 return mac80211_hwsim_tx_frame_nl(hw, skb, _portid);
865
866 /* NO wmediumd detected, perfect medium simulation */
867 ack = mac80211_hwsim_tx_frame_no_nl(hw, skb, channel);
868
869 if (ack && skb->len >= 16) {
870 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
871 mac80211_hwsim_monitor_ack(channel, hdr->addr2);
872 }
873
874 ieee80211_tx_info_clear_status(txi);
875
876 /* frame was transmitted at most favorable rate at first attempt */
877 txi->control.rates[0].count = 1;
878 txi->control.rates[1].idx = -1;
879
880 if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
881 txi->flags |= IEEE80211_TX_STAT_ACK;
882 ieee80211_tx_status_irqsafe(hw, skb);
883 }
884
885
886 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
887 {
888 struct mac80211_hwsim_data *data = hw->priv;
889 wiphy_debug(hw->wiphy, "%s\n", __func__);
890 data->started = true;
891 return 0;
892 }
893
894
895 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
896 {
897 struct mac80211_hwsim_data *data = hw->priv;
898 data->started = false;
899 del_timer(&data->beacon_timer);
900 wiphy_debug(hw->wiphy, "%s\n", __func__);
901 }
902
903
904 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
905 struct ieee80211_vif *vif)
906 {
907 wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
908 __func__, ieee80211_vif_type_p2p(vif),
909 vif->addr);
910 hwsim_set_magic(vif);
911
912 vif->cab_queue = 0;
913 vif->hw_queue[IEEE80211_AC_VO] = 0;
914 vif->hw_queue[IEEE80211_AC_VI] = 1;
915 vif->hw_queue[IEEE80211_AC_BE] = 2;
916 vif->hw_queue[IEEE80211_AC_BK] = 3;
917
918 return 0;
919 }
920
921
922 static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
923 struct ieee80211_vif *vif,
924 enum nl80211_iftype newtype,
925 bool newp2p)
926 {
927 newtype = ieee80211_iftype_p2p(newtype, newp2p);
928 wiphy_debug(hw->wiphy,
929 "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
930 __func__, ieee80211_vif_type_p2p(vif),
931 newtype, vif->addr);
932 hwsim_check_magic(vif);
933
934 return 0;
935 }
936
937 static void mac80211_hwsim_remove_interface(
938 struct ieee80211_hw *hw, struct ieee80211_vif *vif)
939 {
940 wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
941 __func__, ieee80211_vif_type_p2p(vif),
942 vif->addr);
943 hwsim_check_magic(vif);
944 hwsim_clear_magic(vif);
945 }
946
947 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
948 struct sk_buff *skb,
949 struct ieee80211_channel *chan)
950 {
951 u32 _pid = ACCESS_ONCE(wmediumd_portid);
952
953 mac80211_hwsim_monitor_rx(hw, skb, chan);
954
955 if (_pid)
956 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
957
958 mac80211_hwsim_tx_frame_no_nl(hw, skb, chan);
959 dev_kfree_skb(skb);
960 }
961
962 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
963 struct ieee80211_vif *vif)
964 {
965 struct ieee80211_hw *hw = arg;
966 struct sk_buff *skb;
967
968 hwsim_check_magic(vif);
969
970 if (vif->type != NL80211_IFTYPE_AP &&
971 vif->type != NL80211_IFTYPE_MESH_POINT &&
972 vif->type != NL80211_IFTYPE_ADHOC)
973 return;
974
975 skb = ieee80211_beacon_get(hw, vif);
976 if (skb == NULL)
977 return;
978
979 mac80211_hwsim_tx_frame(hw, skb,
980 rcu_dereference(vif->chanctx_conf)->channel);
981 }
982
983
984 static void mac80211_hwsim_beacon(unsigned long arg)
985 {
986 struct ieee80211_hw *hw = (struct ieee80211_hw *) arg;
987 struct mac80211_hwsim_data *data = hw->priv;
988
989 if (!data->started)
990 return;
991
992 ieee80211_iterate_active_interfaces_atomic(
993 hw, IEEE80211_IFACE_ITER_NORMAL,
994 mac80211_hwsim_beacon_tx, hw);
995
996 data->beacon_timer.expires = jiffies + data->beacon_int;
997 add_timer(&data->beacon_timer);
998 }
999
1000 static const char *hwsim_chantypes[] = {
1001 [NL80211_CHAN_NO_HT] = "noht",
1002 [NL80211_CHAN_HT20] = "ht20",
1003 [NL80211_CHAN_HT40MINUS] = "ht40-",
1004 [NL80211_CHAN_HT40PLUS] = "ht40+",
1005 };
1006
1007 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
1008 {
1009 struct mac80211_hwsim_data *data = hw->priv;
1010 struct ieee80211_conf *conf = &hw->conf;
1011 static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
1012 [IEEE80211_SMPS_AUTOMATIC] = "auto",
1013 [IEEE80211_SMPS_OFF] = "off",
1014 [IEEE80211_SMPS_STATIC] = "static",
1015 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
1016 };
1017
1018 wiphy_debug(hw->wiphy,
1019 "%s (freq=%d/%s idle=%d ps=%d smps=%s)\n",
1020 __func__,
1021 conf->channel ? conf->channel->center_freq : 0,
1022 hwsim_chantypes[conf->channel_type],
1023 !!(conf->flags & IEEE80211_CONF_IDLE),
1024 !!(conf->flags & IEEE80211_CONF_PS),
1025 smps_modes[conf->smps_mode]);
1026
1027 data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
1028
1029 data->channel = conf->channel;
1030
1031 WARN_ON(data->channel && channels > 1);
1032
1033 data->power_level = conf->power_level;
1034 if (!data->started || !data->beacon_int)
1035 del_timer(&data->beacon_timer);
1036 else
1037 mod_timer(&data->beacon_timer, jiffies + data->beacon_int);
1038
1039 return 0;
1040 }
1041
1042
1043 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
1044 unsigned int changed_flags,
1045 unsigned int *total_flags,u64 multicast)
1046 {
1047 struct mac80211_hwsim_data *data = hw->priv;
1048
1049 wiphy_debug(hw->wiphy, "%s\n", __func__);
1050
1051 data->rx_filter = 0;
1052 if (*total_flags & FIF_PROMISC_IN_BSS)
1053 data->rx_filter |= FIF_PROMISC_IN_BSS;
1054 if (*total_flags & FIF_ALLMULTI)
1055 data->rx_filter |= FIF_ALLMULTI;
1056
1057 *total_flags = data->rx_filter;
1058 }
1059
1060 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
1061 struct ieee80211_vif *vif,
1062 struct ieee80211_bss_conf *info,
1063 u32 changed)
1064 {
1065 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1066 struct mac80211_hwsim_data *data = hw->priv;
1067
1068 hwsim_check_magic(vif);
1069
1070 wiphy_debug(hw->wiphy, "%s(changed=0x%x)\n", __func__, changed);
1071
1072 if (changed & BSS_CHANGED_BSSID) {
1073 wiphy_debug(hw->wiphy, "%s: BSSID changed: %pM\n",
1074 __func__, info->bssid);
1075 memcpy(vp->bssid, info->bssid, ETH_ALEN);
1076 }
1077
1078 if (changed & BSS_CHANGED_ASSOC) {
1079 wiphy_debug(hw->wiphy, " ASSOC: assoc=%d aid=%d\n",
1080 info->assoc, info->aid);
1081 vp->assoc = info->assoc;
1082 vp->aid = info->aid;
1083 }
1084
1085 if (changed & BSS_CHANGED_BEACON_INT) {
1086 wiphy_debug(hw->wiphy, " BCNINT: %d\n", info->beacon_int);
1087 data->beacon_int = 1024 * info->beacon_int / 1000 * HZ / 1000;
1088 if (WARN_ON(!data->beacon_int))
1089 data->beacon_int = 1;
1090 if (data->started)
1091 mod_timer(&data->beacon_timer,
1092 jiffies + data->beacon_int);
1093 }
1094
1095 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1096 wiphy_debug(hw->wiphy, " ERP_CTS_PROT: %d\n",
1097 info->use_cts_prot);
1098 }
1099
1100 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1101 wiphy_debug(hw->wiphy, " ERP_PREAMBLE: %d\n",
1102 info->use_short_preamble);
1103 }
1104
1105 if (changed & BSS_CHANGED_ERP_SLOT) {
1106 wiphy_debug(hw->wiphy, " ERP_SLOT: %d\n", info->use_short_slot);
1107 }
1108
1109 if (changed & BSS_CHANGED_HT) {
1110 wiphy_debug(hw->wiphy, " HT: op_mode=0x%x, chantype=%s\n",
1111 info->ht_operation_mode,
1112 hwsim_chantypes[info->channel_type]);
1113 }
1114
1115 if (changed & BSS_CHANGED_BASIC_RATES) {
1116 wiphy_debug(hw->wiphy, " BASIC_RATES: 0x%llx\n",
1117 (unsigned long long) info->basic_rates);
1118 }
1119
1120 if (changed & BSS_CHANGED_TXPOWER)
1121 wiphy_debug(hw->wiphy, " TX Power: %d dBm\n", info->txpower);
1122 }
1123
1124 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
1125 struct ieee80211_vif *vif,
1126 struct ieee80211_sta *sta)
1127 {
1128 hwsim_check_magic(vif);
1129 hwsim_set_sta_magic(sta);
1130
1131 return 0;
1132 }
1133
1134 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
1135 struct ieee80211_vif *vif,
1136 struct ieee80211_sta *sta)
1137 {
1138 hwsim_check_magic(vif);
1139 hwsim_clear_sta_magic(sta);
1140
1141 return 0;
1142 }
1143
1144 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
1145 struct ieee80211_vif *vif,
1146 enum sta_notify_cmd cmd,
1147 struct ieee80211_sta *sta)
1148 {
1149 hwsim_check_magic(vif);
1150
1151 switch (cmd) {
1152 case STA_NOTIFY_SLEEP:
1153 case STA_NOTIFY_AWAKE:
1154 /* TODO: make good use of these flags */
1155 break;
1156 default:
1157 WARN(1, "Invalid sta notify: %d\n", cmd);
1158 break;
1159 }
1160 }
1161
1162 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
1163 struct ieee80211_sta *sta,
1164 bool set)
1165 {
1166 hwsim_check_sta_magic(sta);
1167 return 0;
1168 }
1169
1170 static int mac80211_hwsim_conf_tx(
1171 struct ieee80211_hw *hw,
1172 struct ieee80211_vif *vif, u16 queue,
1173 const struct ieee80211_tx_queue_params *params)
1174 {
1175 wiphy_debug(hw->wiphy,
1176 "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
1177 __func__, queue,
1178 params->txop, params->cw_min,
1179 params->cw_max, params->aifs);
1180 return 0;
1181 }
1182
1183 static int mac80211_hwsim_get_survey(
1184 struct ieee80211_hw *hw, int idx,
1185 struct survey_info *survey)
1186 {
1187 struct ieee80211_conf *conf = &hw->conf;
1188
1189 wiphy_debug(hw->wiphy, "%s (idx=%d)\n", __func__, idx);
1190
1191 if (idx != 0)
1192 return -ENOENT;
1193
1194 /* Current channel */
1195 survey->channel = conf->channel;
1196
1197 /*
1198 * Magically conjured noise level --- this is only ok for simulated hardware.
1199 *
1200 * A real driver which cannot determine the real channel noise MUST NOT
1201 * report any noise, especially not a magically conjured one :-)
1202 */
1203 survey->filled = SURVEY_INFO_NOISE_DBM;
1204 survey->noise = -92;
1205
1206 return 0;
1207 }
1208
1209 #ifdef CONFIG_NL80211_TESTMODE
1210 /*
1211 * This section contains example code for using netlink
1212 * attributes with the testmode command in nl80211.
1213 */
1214
1215 /* These enums need to be kept in sync with userspace */
1216 enum hwsim_testmode_attr {
1217 __HWSIM_TM_ATTR_INVALID = 0,
1218 HWSIM_TM_ATTR_CMD = 1,
1219 HWSIM_TM_ATTR_PS = 2,
1220
1221 /* keep last */
1222 __HWSIM_TM_ATTR_AFTER_LAST,
1223 HWSIM_TM_ATTR_MAX = __HWSIM_TM_ATTR_AFTER_LAST - 1
1224 };
1225
1226 enum hwsim_testmode_cmd {
1227 HWSIM_TM_CMD_SET_PS = 0,
1228 HWSIM_TM_CMD_GET_PS = 1,
1229 HWSIM_TM_CMD_STOP_QUEUES = 2,
1230 HWSIM_TM_CMD_WAKE_QUEUES = 3,
1231 };
1232
1233 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
1234 [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
1235 [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
1236 };
1237
1238 static int hwsim_fops_ps_write(void *dat, u64 val);
1239
1240 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
1241 void *data, int len)
1242 {
1243 struct mac80211_hwsim_data *hwsim = hw->priv;
1244 struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
1245 struct sk_buff *skb;
1246 int err, ps;
1247
1248 err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
1249 hwsim_testmode_policy);
1250 if (err)
1251 return err;
1252
1253 if (!tb[HWSIM_TM_ATTR_CMD])
1254 return -EINVAL;
1255
1256 switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
1257 case HWSIM_TM_CMD_SET_PS:
1258 if (!tb[HWSIM_TM_ATTR_PS])
1259 return -EINVAL;
1260 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
1261 return hwsim_fops_ps_write(hwsim, ps);
1262 case HWSIM_TM_CMD_GET_PS:
1263 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
1264 nla_total_size(sizeof(u32)));
1265 if (!skb)
1266 return -ENOMEM;
1267 if (nla_put_u32(skb, HWSIM_TM_ATTR_PS, hwsim->ps))
1268 goto nla_put_failure;
1269 return cfg80211_testmode_reply(skb);
1270 case HWSIM_TM_CMD_STOP_QUEUES:
1271 ieee80211_stop_queues(hw);
1272 return 0;
1273 case HWSIM_TM_CMD_WAKE_QUEUES:
1274 ieee80211_wake_queues(hw);
1275 return 0;
1276 default:
1277 return -EOPNOTSUPP;
1278 }
1279
1280 nla_put_failure:
1281 kfree_skb(skb);
1282 return -ENOBUFS;
1283 }
1284 #endif
1285
1286 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
1287 struct ieee80211_vif *vif,
1288 enum ieee80211_ampdu_mlme_action action,
1289 struct ieee80211_sta *sta, u16 tid, u16 *ssn,
1290 u8 buf_size)
1291 {
1292 switch (action) {
1293 case IEEE80211_AMPDU_TX_START:
1294 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1295 break;
1296 case IEEE80211_AMPDU_TX_STOP:
1297 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1298 break;
1299 case IEEE80211_AMPDU_TX_OPERATIONAL:
1300 break;
1301 case IEEE80211_AMPDU_RX_START:
1302 case IEEE80211_AMPDU_RX_STOP:
1303 break;
1304 default:
1305 return -EOPNOTSUPP;
1306 }
1307
1308 return 0;
1309 }
1310
1311 static void mac80211_hwsim_flush(struct ieee80211_hw *hw, bool drop)
1312 {
1313 /* Not implemented, queues only on kernel side */
1314 }
1315
1316 static void hw_scan_work(struct work_struct *work)
1317 {
1318 struct mac80211_hwsim_data *hwsim =
1319 container_of(work, struct mac80211_hwsim_data, hw_scan.work);
1320 struct cfg80211_scan_request *req = hwsim->hw_scan_request;
1321 int dwell, i;
1322
1323 mutex_lock(&hwsim->mutex);
1324 if (hwsim->scan_chan_idx >= req->n_channels) {
1325 wiphy_debug(hwsim->hw->wiphy, "hw scan complete\n");
1326 ieee80211_scan_completed(hwsim->hw, false);
1327 hwsim->hw_scan_request = NULL;
1328 hwsim->hw_scan_vif = NULL;
1329 hwsim->tmp_chan = NULL;
1330 mutex_unlock(&hwsim->mutex);
1331 return;
1332 }
1333
1334 wiphy_debug(hwsim->hw->wiphy, "hw scan %d MHz\n",
1335 req->channels[hwsim->scan_chan_idx]->center_freq);
1336
1337 hwsim->tmp_chan = req->channels[hwsim->scan_chan_idx];
1338 if (hwsim->tmp_chan->flags & IEEE80211_CHAN_PASSIVE_SCAN ||
1339 !req->n_ssids) {
1340 dwell = 120;
1341 } else {
1342 dwell = 30;
1343 /* send probes */
1344 for (i = 0; i < req->n_ssids; i++) {
1345 struct sk_buff *probe;
1346
1347 probe = ieee80211_probereq_get(hwsim->hw,
1348 hwsim->hw_scan_vif,
1349 req->ssids[i].ssid,
1350 req->ssids[i].ssid_len,
1351 req->ie, req->ie_len);
1352 if (!probe)
1353 continue;
1354 local_bh_disable();
1355 mac80211_hwsim_tx_frame(hwsim->hw, probe,
1356 hwsim->tmp_chan);
1357 local_bh_enable();
1358 }
1359 }
1360 ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan,
1361 msecs_to_jiffies(dwell));
1362 hwsim->scan_chan_idx++;
1363 mutex_unlock(&hwsim->mutex);
1364 }
1365
1366 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
1367 struct ieee80211_vif *vif,
1368 struct cfg80211_scan_request *req)
1369 {
1370 struct mac80211_hwsim_data *hwsim = hw->priv;
1371 int i;
1372
1373 mutex_lock(&hwsim->mutex);
1374 if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
1375 mutex_unlock(&hwsim->mutex);
1376 return -EBUSY;
1377 }
1378 hwsim->hw_scan_request = req;
1379 hwsim->hw_scan_vif = vif;
1380 hwsim->scan_chan_idx = 0;
1381 mutex_unlock(&hwsim->mutex);
1382
1383 wiphy_debug(hw->wiphy, "hwsim hw_scan request\n");
1384 for (i = 0; i < req->n_channels; i++)
1385 printk(KERN_DEBUG "hwsim hw_scan freq %d\n",
1386 req->channels[i]->center_freq);
1387 print_hex_dump(KERN_DEBUG, "scan IEs: ", DUMP_PREFIX_OFFSET,
1388 16, 1, req->ie, req->ie_len, 1);
1389
1390 ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan, 0);
1391
1392 return 0;
1393 }
1394
1395 static void mac80211_hwsim_cancel_hw_scan(struct ieee80211_hw *hw,
1396 struct ieee80211_vif *vif)
1397 {
1398 struct mac80211_hwsim_data *hwsim = hw->priv;
1399
1400 wiphy_debug(hw->wiphy, "hwsim cancel_hw_scan\n");
1401
1402 cancel_delayed_work_sync(&hwsim->hw_scan);
1403
1404 mutex_lock(&hwsim->mutex);
1405 ieee80211_scan_completed(hwsim->hw, true);
1406 hwsim->tmp_chan = NULL;
1407 hwsim->hw_scan_request = NULL;
1408 hwsim->hw_scan_vif = NULL;
1409 mutex_unlock(&hwsim->mutex);
1410 }
1411
1412 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw)
1413 {
1414 struct mac80211_hwsim_data *hwsim = hw->priv;
1415
1416 mutex_lock(&hwsim->mutex);
1417
1418 if (hwsim->scanning) {
1419 printk(KERN_DEBUG "two hwsim sw_scans detected!\n");
1420 goto out;
1421 }
1422
1423 printk(KERN_DEBUG "hwsim sw_scan request, prepping stuff\n");
1424 hwsim->scanning = true;
1425
1426 out:
1427 mutex_unlock(&hwsim->mutex);
1428 }
1429
1430 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw)
1431 {
1432 struct mac80211_hwsim_data *hwsim = hw->priv;
1433
1434 mutex_lock(&hwsim->mutex);
1435
1436 printk(KERN_DEBUG "hwsim sw_scan_complete\n");
1437 hwsim->scanning = false;
1438
1439 mutex_unlock(&hwsim->mutex);
1440 }
1441
1442 static void hw_roc_done(struct work_struct *work)
1443 {
1444 struct mac80211_hwsim_data *hwsim =
1445 container_of(work, struct mac80211_hwsim_data, roc_done.work);
1446
1447 mutex_lock(&hwsim->mutex);
1448 ieee80211_remain_on_channel_expired(hwsim->hw);
1449 hwsim->tmp_chan = NULL;
1450 mutex_unlock(&hwsim->mutex);
1451
1452 wiphy_debug(hwsim->hw->wiphy, "hwsim ROC expired\n");
1453 }
1454
1455 static int mac80211_hwsim_roc(struct ieee80211_hw *hw,
1456 struct ieee80211_vif *vif,
1457 struct ieee80211_channel *chan,
1458 enum nl80211_channel_type channel_type,
1459 int duration)
1460 {
1461 struct mac80211_hwsim_data *hwsim = hw->priv;
1462
1463 mutex_lock(&hwsim->mutex);
1464 if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
1465 mutex_unlock(&hwsim->mutex);
1466 return -EBUSY;
1467 }
1468
1469 hwsim->tmp_chan = chan;
1470 mutex_unlock(&hwsim->mutex);
1471
1472 wiphy_debug(hw->wiphy, "hwsim ROC (%d MHz, %d ms)\n",
1473 chan->center_freq, duration);
1474
1475 ieee80211_ready_on_channel(hw);
1476
1477 ieee80211_queue_delayed_work(hw, &hwsim->roc_done,
1478 msecs_to_jiffies(duration));
1479 return 0;
1480 }
1481
1482 static int mac80211_hwsim_croc(struct ieee80211_hw *hw)
1483 {
1484 struct mac80211_hwsim_data *hwsim = hw->priv;
1485
1486 cancel_delayed_work_sync(&hwsim->roc_done);
1487
1488 mutex_lock(&hwsim->mutex);
1489 hwsim->tmp_chan = NULL;
1490 mutex_unlock(&hwsim->mutex);
1491
1492 wiphy_debug(hw->wiphy, "hwsim ROC canceled\n");
1493
1494 return 0;
1495 }
1496
1497 static int mac80211_hwsim_add_chanctx(struct ieee80211_hw *hw,
1498 struct ieee80211_chanctx_conf *ctx)
1499 {
1500 hwsim_set_chanctx_magic(ctx);
1501 wiphy_debug(hw->wiphy, "add channel context %d MHz/%d\n",
1502 ctx->channel->center_freq, ctx->channel_type);
1503 return 0;
1504 }
1505
1506 static void mac80211_hwsim_remove_chanctx(struct ieee80211_hw *hw,
1507 struct ieee80211_chanctx_conf *ctx)
1508 {
1509 wiphy_debug(hw->wiphy, "remove channel context %d MHz/%d\n",
1510 ctx->channel->center_freq, ctx->channel_type);
1511 hwsim_check_chanctx_magic(ctx);
1512 hwsim_clear_chanctx_magic(ctx);
1513 }
1514
1515 static void mac80211_hwsim_change_chanctx(struct ieee80211_hw *hw,
1516 struct ieee80211_chanctx_conf *ctx,
1517 u32 changed)
1518 {
1519 hwsim_check_chanctx_magic(ctx);
1520 wiphy_debug(hw->wiphy, "change channel context %#x (%d MHz/%d)\n",
1521 changed, ctx->channel->center_freq, ctx->channel_type);
1522 }
1523
1524 static int mac80211_hwsim_assign_vif_chanctx(struct ieee80211_hw *hw,
1525 struct ieee80211_vif *vif,
1526 struct ieee80211_chanctx_conf *ctx)
1527 {
1528 hwsim_check_magic(vif);
1529 hwsim_check_chanctx_magic(ctx);
1530
1531 return 0;
1532 }
1533
1534 static void mac80211_hwsim_unassign_vif_chanctx(struct ieee80211_hw *hw,
1535 struct ieee80211_vif *vif,
1536 struct ieee80211_chanctx_conf *ctx)
1537 {
1538 hwsim_check_magic(vif);
1539 hwsim_check_chanctx_magic(ctx);
1540 }
1541
1542 static struct ieee80211_ops mac80211_hwsim_ops =
1543 {
1544 .tx = mac80211_hwsim_tx,
1545 .start = mac80211_hwsim_start,
1546 .stop = mac80211_hwsim_stop,
1547 .add_interface = mac80211_hwsim_add_interface,
1548 .change_interface = mac80211_hwsim_change_interface,
1549 .remove_interface = mac80211_hwsim_remove_interface,
1550 .config = mac80211_hwsim_config,
1551 .configure_filter = mac80211_hwsim_configure_filter,
1552 .bss_info_changed = mac80211_hwsim_bss_info_changed,
1553 .sta_add = mac80211_hwsim_sta_add,
1554 .sta_remove = mac80211_hwsim_sta_remove,
1555 .sta_notify = mac80211_hwsim_sta_notify,
1556 .set_tim = mac80211_hwsim_set_tim,
1557 .conf_tx = mac80211_hwsim_conf_tx,
1558 .get_survey = mac80211_hwsim_get_survey,
1559 CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)
1560 .ampdu_action = mac80211_hwsim_ampdu_action,
1561 .sw_scan_start = mac80211_hwsim_sw_scan,
1562 .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
1563 .flush = mac80211_hwsim_flush,
1564 .get_tsf = mac80211_hwsim_get_tsf,
1565 .set_tsf = mac80211_hwsim_set_tsf,
1566 };
1567
1568
1569 static void mac80211_hwsim_free(void)
1570 {
1571 struct list_head tmplist, *i, *tmp;
1572 struct mac80211_hwsim_data *data, *tmpdata;
1573
1574 INIT_LIST_HEAD(&tmplist);
1575
1576 spin_lock_bh(&hwsim_radio_lock);
1577 list_for_each_safe(i, tmp, &hwsim_radios)
1578 list_move(i, &tmplist);
1579 spin_unlock_bh(&hwsim_radio_lock);
1580
1581 list_for_each_entry_safe(data, tmpdata, &tmplist, list) {
1582 debugfs_remove(data->debugfs_group);
1583 debugfs_remove(data->debugfs_ps);
1584 debugfs_remove(data->debugfs);
1585 ieee80211_unregister_hw(data->hw);
1586 device_unregister(data->dev);
1587 ieee80211_free_hw(data->hw);
1588 }
1589 class_destroy(hwsim_class);
1590 }
1591
1592
1593 static struct device_driver mac80211_hwsim_driver = {
1594 .name = "mac80211_hwsim"
1595 };
1596
1597 static const struct net_device_ops hwsim_netdev_ops = {
1598 .ndo_start_xmit = hwsim_mon_xmit,
1599 .ndo_change_mtu = eth_change_mtu,
1600 .ndo_set_mac_address = eth_mac_addr,
1601 .ndo_validate_addr = eth_validate_addr,
1602 };
1603
1604 static void hwsim_mon_setup(struct net_device *dev)
1605 {
1606 dev->netdev_ops = &hwsim_netdev_ops;
1607 dev->destructor = free_netdev;
1608 ether_setup(dev);
1609 dev->tx_queue_len = 0;
1610 dev->type = ARPHRD_IEEE80211_RADIOTAP;
1611 memset(dev->dev_addr, 0, ETH_ALEN);
1612 dev->dev_addr[0] = 0x12;
1613 }
1614
1615
1616 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
1617 {
1618 struct mac80211_hwsim_data *data = dat;
1619 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1620 struct sk_buff *skb;
1621 struct ieee80211_pspoll *pspoll;
1622
1623 if (!vp->assoc)
1624 return;
1625
1626 wiphy_debug(data->hw->wiphy,
1627 "%s: send PS-Poll to %pM for aid %d\n",
1628 __func__, vp->bssid, vp->aid);
1629
1630 skb = dev_alloc_skb(sizeof(*pspoll));
1631 if (!skb)
1632 return;
1633 pspoll = (void *) skb_put(skb, sizeof(*pspoll));
1634 pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
1635 IEEE80211_STYPE_PSPOLL |
1636 IEEE80211_FCTL_PM);
1637 pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
1638 memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
1639 memcpy(pspoll->ta, mac, ETH_ALEN);
1640
1641 rcu_read_lock();
1642 mac80211_hwsim_tx_frame(data->hw, skb,
1643 rcu_dereference(vif->chanctx_conf)->channel);
1644 rcu_read_unlock();
1645 }
1646
1647 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
1648 struct ieee80211_vif *vif, int ps)
1649 {
1650 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1651 struct sk_buff *skb;
1652 struct ieee80211_hdr *hdr;
1653
1654 if (!vp->assoc)
1655 return;
1656
1657 wiphy_debug(data->hw->wiphy,
1658 "%s: send data::nullfunc to %pM ps=%d\n",
1659 __func__, vp->bssid, ps);
1660
1661 skb = dev_alloc_skb(sizeof(*hdr));
1662 if (!skb)
1663 return;
1664 hdr = (void *) skb_put(skb, sizeof(*hdr) - ETH_ALEN);
1665 hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
1666 IEEE80211_STYPE_NULLFUNC |
1667 (ps ? IEEE80211_FCTL_PM : 0));
1668 hdr->duration_id = cpu_to_le16(0);
1669 memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
1670 memcpy(hdr->addr2, mac, ETH_ALEN);
1671 memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
1672
1673 rcu_read_lock();
1674 mac80211_hwsim_tx_frame(data->hw, skb,
1675 rcu_dereference(vif->chanctx_conf)->channel);
1676 rcu_read_unlock();
1677 }
1678
1679
1680 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
1681 struct ieee80211_vif *vif)
1682 {
1683 struct mac80211_hwsim_data *data = dat;
1684 hwsim_send_nullfunc(data, mac, vif, 1);
1685 }
1686
1687
1688 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
1689 struct ieee80211_vif *vif)
1690 {
1691 struct mac80211_hwsim_data *data = dat;
1692 hwsim_send_nullfunc(data, mac, vif, 0);
1693 }
1694
1695
1696 static int hwsim_fops_ps_read(void *dat, u64 *val)
1697 {
1698 struct mac80211_hwsim_data *data = dat;
1699 *val = data->ps;
1700 return 0;
1701 }
1702
1703 static int hwsim_fops_ps_write(void *dat, u64 val)
1704 {
1705 struct mac80211_hwsim_data *data = dat;
1706 enum ps_mode old_ps;
1707
1708 if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
1709 val != PS_MANUAL_POLL)
1710 return -EINVAL;
1711
1712 old_ps = data->ps;
1713 data->ps = val;
1714
1715 if (val == PS_MANUAL_POLL) {
1716 ieee80211_iterate_active_interfaces(data->hw,
1717 IEEE80211_IFACE_ITER_NORMAL,
1718 hwsim_send_ps_poll, data);
1719 data->ps_poll_pending = true;
1720 } else if (old_ps == PS_DISABLED && val != PS_DISABLED) {
1721 ieee80211_iterate_active_interfaces(data->hw,
1722 IEEE80211_IFACE_ITER_NORMAL,
1723 hwsim_send_nullfunc_ps,
1724 data);
1725 } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
1726 ieee80211_iterate_active_interfaces(data->hw,
1727 IEEE80211_IFACE_ITER_NORMAL,
1728 hwsim_send_nullfunc_no_ps,
1729 data);
1730 }
1731
1732 return 0;
1733 }
1734
1735 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
1736 "%llu\n");
1737
1738
1739 static int hwsim_fops_group_read(void *dat, u64 *val)
1740 {
1741 struct mac80211_hwsim_data *data = dat;
1742 *val = data->group;
1743 return 0;
1744 }
1745
1746 static int hwsim_fops_group_write(void *dat, u64 val)
1747 {
1748 struct mac80211_hwsim_data *data = dat;
1749 data->group = val;
1750 return 0;
1751 }
1752
1753 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
1754 hwsim_fops_group_read, hwsim_fops_group_write,
1755 "%llx\n");
1756
1757 static struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(
1758 struct mac_address *addr)
1759 {
1760 struct mac80211_hwsim_data *data;
1761 bool _found = false;
1762
1763 spin_lock_bh(&hwsim_radio_lock);
1764 list_for_each_entry(data, &hwsim_radios, list) {
1765 if (memcmp(data->addresses[1].addr, addr,
1766 sizeof(struct mac_address)) == 0) {
1767 _found = true;
1768 break;
1769 }
1770 }
1771 spin_unlock_bh(&hwsim_radio_lock);
1772
1773 if (!_found)
1774 return NULL;
1775
1776 return data;
1777 }
1778
1779 static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
1780 struct genl_info *info)
1781 {
1782
1783 struct ieee80211_hdr *hdr;
1784 struct mac80211_hwsim_data *data2;
1785 struct ieee80211_tx_info *txi;
1786 struct hwsim_tx_rate *tx_attempts;
1787 unsigned long ret_skb_ptr;
1788 struct sk_buff *skb, *tmp;
1789 struct mac_address *src;
1790 unsigned int hwsim_flags;
1791
1792 int i;
1793 bool found = false;
1794
1795 if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
1796 !info->attrs[HWSIM_ATTR_FLAGS] ||
1797 !info->attrs[HWSIM_ATTR_COOKIE] ||
1798 !info->attrs[HWSIM_ATTR_TX_INFO])
1799 goto out;
1800
1801 src = (struct mac_address *)nla_data(
1802 info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
1803 hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
1804
1805 ret_skb_ptr = nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
1806
1807 data2 = get_hwsim_data_ref_from_addr(src);
1808
1809 if (data2 == NULL)
1810 goto out;
1811
1812 /* look for the skb matching the cookie passed back from user */
1813 skb_queue_walk_safe(&data2->pending, skb, tmp) {
1814 if ((unsigned long)skb == ret_skb_ptr) {
1815 skb_unlink(skb, &data2->pending);
1816 found = true;
1817 break;
1818 }
1819 }
1820
1821 /* not found */
1822 if (!found)
1823 goto out;
1824
1825 /* Tx info received because the frame was broadcasted on user space,
1826 so we get all the necessary info: tx attempts and skb control buff */
1827
1828 tx_attempts = (struct hwsim_tx_rate *)nla_data(
1829 info->attrs[HWSIM_ATTR_TX_INFO]);
1830
1831 /* now send back TX status */
1832 txi = IEEE80211_SKB_CB(skb);
1833
1834 ieee80211_tx_info_clear_status(txi);
1835
1836 for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
1837 txi->status.rates[i].idx = tx_attempts[i].idx;
1838 txi->status.rates[i].count = tx_attempts[i].count;
1839 /*txi->status.rates[i].flags = 0;*/
1840 }
1841
1842 txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
1843
1844 if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
1845 (hwsim_flags & HWSIM_TX_STAT_ACK)) {
1846 if (skb->len >= 16) {
1847 hdr = (struct ieee80211_hdr *) skb->data;
1848 mac80211_hwsim_monitor_ack(txi->rate_driver_data[0],
1849 hdr->addr2);
1850 }
1851 txi->flags |= IEEE80211_TX_STAT_ACK;
1852 }
1853 ieee80211_tx_status_irqsafe(data2->hw, skb);
1854 return 0;
1855 out:
1856 return -EINVAL;
1857
1858 }
1859
1860 static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
1861 struct genl_info *info)
1862 {
1863
1864 struct mac80211_hwsim_data *data2;
1865 struct ieee80211_rx_status rx_status;
1866 struct mac_address *dst;
1867 int frame_data_len;
1868 char *frame_data;
1869 struct sk_buff *skb = NULL;
1870
1871 if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
1872 !info->attrs[HWSIM_ATTR_FRAME] ||
1873 !info->attrs[HWSIM_ATTR_RX_RATE] ||
1874 !info->attrs[HWSIM_ATTR_SIGNAL])
1875 goto out;
1876
1877 dst = (struct mac_address *)nla_data(
1878 info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
1879
1880 frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
1881 frame_data = (char *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
1882
1883 /* Allocate new skb here */
1884 skb = alloc_skb(frame_data_len, GFP_KERNEL);
1885 if (skb == NULL)
1886 goto err;
1887
1888 if (frame_data_len <= IEEE80211_MAX_DATA_LEN) {
1889 /* Copy the data */
1890 memcpy(skb_put(skb, frame_data_len), frame_data,
1891 frame_data_len);
1892 } else
1893 goto err;
1894
1895 data2 = get_hwsim_data_ref_from_addr(dst);
1896
1897 if (data2 == NULL)
1898 goto out;
1899
1900 /* check if radio is configured properly */
1901
1902 if (data2->idle || !data2->started)
1903 goto out;
1904
1905 /*A frame is received from user space*/
1906 memset(&rx_status, 0, sizeof(rx_status));
1907 rx_status.freq = data2->channel->center_freq;
1908 rx_status.band = data2->channel->band;
1909 rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
1910 rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
1911
1912 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
1913 ieee80211_rx_irqsafe(data2->hw, skb);
1914
1915 return 0;
1916 err:
1917 printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
1918 goto out;
1919 out:
1920 dev_kfree_skb(skb);
1921 return -EINVAL;
1922 }
1923
1924 static int hwsim_register_received_nl(struct sk_buff *skb_2,
1925 struct genl_info *info)
1926 {
1927 if (info == NULL)
1928 goto out;
1929
1930 wmediumd_portid = info->snd_portid;
1931
1932 printk(KERN_DEBUG "mac80211_hwsim: received a REGISTER, "
1933 "switching to wmediumd mode with pid %d\n", info->snd_portid);
1934
1935 return 0;
1936 out:
1937 printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
1938 return -EINVAL;
1939 }
1940
1941 /* Generic Netlink operations array */
1942 static struct genl_ops hwsim_ops[] = {
1943 {
1944 .cmd = HWSIM_CMD_REGISTER,
1945 .policy = hwsim_genl_policy,
1946 .doit = hwsim_register_received_nl,
1947 .flags = GENL_ADMIN_PERM,
1948 },
1949 {
1950 .cmd = HWSIM_CMD_FRAME,
1951 .policy = hwsim_genl_policy,
1952 .doit = hwsim_cloned_frame_received_nl,
1953 },
1954 {
1955 .cmd = HWSIM_CMD_TX_INFO_FRAME,
1956 .policy = hwsim_genl_policy,
1957 .doit = hwsim_tx_info_frame_received_nl,
1958 },
1959 };
1960
1961 static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
1962 unsigned long state,
1963 void *_notify)
1964 {
1965 struct netlink_notify *notify = _notify;
1966
1967 if (state != NETLINK_URELEASE)
1968 return NOTIFY_DONE;
1969
1970 if (notify->portid == wmediumd_portid) {
1971 printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
1972 " socket, switching to perfect channel medium\n");
1973 wmediumd_portid = 0;
1974 }
1975 return NOTIFY_DONE;
1976
1977 }
1978
1979 static struct notifier_block hwsim_netlink_notifier = {
1980 .notifier_call = mac80211_hwsim_netlink_notify,
1981 };
1982
1983 static int hwsim_init_netlink(void)
1984 {
1985 int rc;
1986
1987 /* userspace test API hasn't been adjusted for multi-channel */
1988 if (channels > 1)
1989 return 0;
1990
1991 printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
1992
1993 rc = genl_register_family_with_ops(&hwsim_genl_family,
1994 hwsim_ops, ARRAY_SIZE(hwsim_ops));
1995 if (rc)
1996 goto failure;
1997
1998 rc = netlink_register_notifier(&hwsim_netlink_notifier);
1999 if (rc)
2000 goto failure;
2001
2002 return 0;
2003
2004 failure:
2005 printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
2006 return -EINVAL;
2007 }
2008
2009 static void hwsim_exit_netlink(void)
2010 {
2011 int ret;
2012
2013 /* userspace test API hasn't been adjusted for multi-channel */
2014 if (channels > 1)
2015 return;
2016
2017 printk(KERN_INFO "mac80211_hwsim: closing netlink\n");
2018 /* unregister the notifier */
2019 netlink_unregister_notifier(&hwsim_netlink_notifier);
2020 /* unregister the family */
2021 ret = genl_unregister_family(&hwsim_genl_family);
2022 if (ret)
2023 printk(KERN_DEBUG "mac80211_hwsim: "
2024 "unregister family %i\n", ret);
2025 }
2026
2027 static const struct ieee80211_iface_limit hwsim_if_limits[] = {
2028 { .max = 1, .types = BIT(NL80211_IFTYPE_ADHOC) },
2029 { .max = 2048, .types = BIT(NL80211_IFTYPE_STATION) |
2030 BIT(NL80211_IFTYPE_P2P_CLIENT) |
2031 #ifdef CONFIG_MAC80211_MESH
2032 BIT(NL80211_IFTYPE_MESH_POINT) |
2033 #endif
2034 BIT(NL80211_IFTYPE_AP) |
2035 BIT(NL80211_IFTYPE_P2P_GO) },
2036 { .max = 1, .types = BIT(NL80211_IFTYPE_P2P_DEVICE) },
2037 };
2038
2039 static struct ieee80211_iface_combination hwsim_if_comb = {
2040 .limits = hwsim_if_limits,
2041 .n_limits = ARRAY_SIZE(hwsim_if_limits),
2042 .max_interfaces = 2048,
2043 .num_different_channels = 1,
2044 };
2045
2046 static int __init init_mac80211_hwsim(void)
2047 {
2048 int i, err = 0;
2049 u8 addr[ETH_ALEN];
2050 struct mac80211_hwsim_data *data;
2051 struct ieee80211_hw *hw;
2052 enum ieee80211_band band;
2053
2054 if (radios < 1 || radios > 100)
2055 return -EINVAL;
2056
2057 if (channels < 1)
2058 return -EINVAL;
2059
2060 if (channels > 1) {
2061 hwsim_if_comb.num_different_channels = channels;
2062 mac80211_hwsim_ops.hw_scan = mac80211_hwsim_hw_scan;
2063 mac80211_hwsim_ops.cancel_hw_scan =
2064 mac80211_hwsim_cancel_hw_scan;
2065 mac80211_hwsim_ops.sw_scan_start = NULL;
2066 mac80211_hwsim_ops.sw_scan_complete = NULL;
2067 mac80211_hwsim_ops.remain_on_channel =
2068 mac80211_hwsim_roc;
2069 mac80211_hwsim_ops.cancel_remain_on_channel =
2070 mac80211_hwsim_croc;
2071 mac80211_hwsim_ops.add_chanctx =
2072 mac80211_hwsim_add_chanctx;
2073 mac80211_hwsim_ops.remove_chanctx =
2074 mac80211_hwsim_remove_chanctx;
2075 mac80211_hwsim_ops.change_chanctx =
2076 mac80211_hwsim_change_chanctx;
2077 mac80211_hwsim_ops.assign_vif_chanctx =
2078 mac80211_hwsim_assign_vif_chanctx;
2079 mac80211_hwsim_ops.unassign_vif_chanctx =
2080 mac80211_hwsim_unassign_vif_chanctx;
2081 }
2082
2083 spin_lock_init(&hwsim_radio_lock);
2084 INIT_LIST_HEAD(&hwsim_radios);
2085
2086 hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
2087 if (IS_ERR(hwsim_class))
2088 return PTR_ERR(hwsim_class);
2089
2090 memset(addr, 0, ETH_ALEN);
2091 addr[0] = 0x02;
2092
2093 for (i = 0; i < radios; i++) {
2094 printk(KERN_DEBUG "mac80211_hwsim: Initializing radio %d\n",
2095 i);
2096 hw = ieee80211_alloc_hw(sizeof(*data), &mac80211_hwsim_ops);
2097 if (!hw) {
2098 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw "
2099 "failed\n");
2100 err = -ENOMEM;
2101 goto failed;
2102 }
2103 data = hw->priv;
2104 data->hw = hw;
2105
2106 data->dev = device_create(hwsim_class, NULL, 0, hw,
2107 "hwsim%d", i);
2108 if (IS_ERR(data->dev)) {
2109 printk(KERN_DEBUG
2110 "mac80211_hwsim: device_create "
2111 "failed (%ld)\n", PTR_ERR(data->dev));
2112 err = -ENOMEM;
2113 goto failed_drvdata;
2114 }
2115 data->dev->driver = &mac80211_hwsim_driver;
2116 skb_queue_head_init(&data->pending);
2117
2118 SET_IEEE80211_DEV(hw, data->dev);
2119 addr[3] = i >> 8;
2120 addr[4] = i;
2121 memcpy(data->addresses[0].addr, addr, ETH_ALEN);
2122 memcpy(data->addresses[1].addr, addr, ETH_ALEN);
2123 data->addresses[1].addr[0] |= 0x40;
2124 hw->wiphy->n_addresses = 2;
2125 hw->wiphy->addresses = data->addresses;
2126
2127 hw->wiphy->iface_combinations = &hwsim_if_comb;
2128 hw->wiphy->n_iface_combinations = 1;
2129
2130 if (channels > 1) {
2131 hw->wiphy->max_scan_ssids = 255;
2132 hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
2133 hw->wiphy->max_remain_on_channel_duration = 1000;
2134 }
2135
2136 INIT_DELAYED_WORK(&data->roc_done, hw_roc_done);
2137 INIT_DELAYED_WORK(&data->hw_scan, hw_scan_work);
2138
2139 hw->channel_change_time = 1;
2140 hw->queues = 5;
2141 hw->offchannel_tx_hw_queue = 4;
2142 hw->wiphy->interface_modes =
2143 BIT(NL80211_IFTYPE_STATION) |
2144 BIT(NL80211_IFTYPE_AP) |
2145 BIT(NL80211_IFTYPE_P2P_CLIENT) |
2146 BIT(NL80211_IFTYPE_P2P_GO) |
2147 BIT(NL80211_IFTYPE_ADHOC) |
2148 BIT(NL80211_IFTYPE_MESH_POINT) |
2149 BIT(NL80211_IFTYPE_P2P_DEVICE);
2150
2151 hw->flags = IEEE80211_HW_MFP_CAPABLE |
2152 IEEE80211_HW_SIGNAL_DBM |
2153 IEEE80211_HW_SUPPORTS_STATIC_SMPS |
2154 IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
2155 IEEE80211_HW_AMPDU_AGGREGATION |
2156 IEEE80211_HW_WANT_MONITOR_VIF |
2157 IEEE80211_HW_QUEUE_CONTROL;
2158
2159 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS |
2160 WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL;
2161
2162 /* ask mac80211 to reserve space for magic */
2163 hw->vif_data_size = sizeof(struct hwsim_vif_priv);
2164 hw->sta_data_size = sizeof(struct hwsim_sta_priv);
2165
2166 memcpy(data->channels_2ghz, hwsim_channels_2ghz,
2167 sizeof(hwsim_channels_2ghz));
2168 memcpy(data->channels_5ghz, hwsim_channels_5ghz,
2169 sizeof(hwsim_channels_5ghz));
2170 memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
2171
2172 for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) {
2173 struct ieee80211_supported_band *sband = &data->bands[band];
2174 switch (band) {
2175 case IEEE80211_BAND_2GHZ:
2176 sband->channels = data->channels_2ghz;
2177 sband->n_channels =
2178 ARRAY_SIZE(hwsim_channels_2ghz);
2179 sband->bitrates = data->rates;
2180 sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
2181 break;
2182 case IEEE80211_BAND_5GHZ:
2183 sband->channels = data->channels_5ghz;
2184 sband->n_channels =
2185 ARRAY_SIZE(hwsim_channels_5ghz);
2186 sband->bitrates = data->rates + 4;
2187 sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
2188 break;
2189 default:
2190 continue;
2191 }
2192
2193 sband->ht_cap.ht_supported = true;
2194 sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
2195 IEEE80211_HT_CAP_GRN_FLD |
2196 IEEE80211_HT_CAP_SGI_40 |
2197 IEEE80211_HT_CAP_DSSSCCK40;
2198 sband->ht_cap.ampdu_factor = 0x3;
2199 sband->ht_cap.ampdu_density = 0x6;
2200 memset(&sband->ht_cap.mcs, 0,
2201 sizeof(sband->ht_cap.mcs));
2202 sband->ht_cap.mcs.rx_mask[0] = 0xff;
2203 sband->ht_cap.mcs.rx_mask[1] = 0xff;
2204 sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2205
2206 hw->wiphy->bands[band] = sband;
2207 }
2208 /* By default all radios are belonging to the first group */
2209 data->group = 1;
2210 mutex_init(&data->mutex);
2211
2212 /* Enable frame retransmissions for lossy channels */
2213 hw->max_rates = 4;
2214 hw->max_rate_tries = 11;
2215
2216 /* Work to be done prior to ieee80211_register_hw() */
2217 switch (regtest) {
2218 case HWSIM_REGTEST_DISABLED:
2219 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
2220 case HWSIM_REGTEST_DRIVER_REG_ALL:
2221 case HWSIM_REGTEST_DIFF_COUNTRY:
2222 /*
2223 * Nothing to be done for driver regulatory domain
2224 * hints prior to ieee80211_register_hw()
2225 */
2226 break;
2227 case HWSIM_REGTEST_WORLD_ROAM:
2228 if (i == 0) {
2229 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
2230 wiphy_apply_custom_regulatory(hw->wiphy,
2231 &hwsim_world_regdom_custom_01);
2232 }
2233 break;
2234 case HWSIM_REGTEST_CUSTOM_WORLD:
2235 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
2236 wiphy_apply_custom_regulatory(hw->wiphy,
2237 &hwsim_world_regdom_custom_01);
2238 break;
2239 case HWSIM_REGTEST_CUSTOM_WORLD_2:
2240 if (i == 0) {
2241 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
2242 wiphy_apply_custom_regulatory(hw->wiphy,
2243 &hwsim_world_regdom_custom_01);
2244 } else if (i == 1) {
2245 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
2246 wiphy_apply_custom_regulatory(hw->wiphy,
2247 &hwsim_world_regdom_custom_02);
2248 }
2249 break;
2250 case HWSIM_REGTEST_STRICT_ALL:
2251 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
2252 break;
2253 case HWSIM_REGTEST_STRICT_FOLLOW:
2254 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
2255 if (i == 0)
2256 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
2257 break;
2258 case HWSIM_REGTEST_ALL:
2259 if (i == 0) {
2260 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
2261 wiphy_apply_custom_regulatory(hw->wiphy,
2262 &hwsim_world_regdom_custom_01);
2263 } else if (i == 1) {
2264 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
2265 wiphy_apply_custom_regulatory(hw->wiphy,
2266 &hwsim_world_regdom_custom_02);
2267 } else if (i == 4)
2268 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
2269 break;
2270 default:
2271 break;
2272 }
2273
2274 /* give the regulatory workqueue a chance to run */
2275 if (regtest)
2276 schedule_timeout_interruptible(1);
2277 err = ieee80211_register_hw(hw);
2278 if (err < 0) {
2279 printk(KERN_DEBUG "mac80211_hwsim: "
2280 "ieee80211_register_hw failed (%d)\n", err);
2281 goto failed_hw;
2282 }
2283
2284 /* Work to be done after to ieee80211_register_hw() */
2285 switch (regtest) {
2286 case HWSIM_REGTEST_WORLD_ROAM:
2287 case HWSIM_REGTEST_DISABLED:
2288 break;
2289 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
2290 if (!i)
2291 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
2292 break;
2293 case HWSIM_REGTEST_DRIVER_REG_ALL:
2294 case HWSIM_REGTEST_STRICT_ALL:
2295 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
2296 break;
2297 case HWSIM_REGTEST_DIFF_COUNTRY:
2298 if (i < ARRAY_SIZE(hwsim_alpha2s))
2299 regulatory_hint(hw->wiphy, hwsim_alpha2s[i]);
2300 break;
2301 case HWSIM_REGTEST_CUSTOM_WORLD:
2302 case HWSIM_REGTEST_CUSTOM_WORLD_2:
2303 /*
2304 * Nothing to be done for custom world regulatory
2305 * domains after to ieee80211_register_hw
2306 */
2307 break;
2308 case HWSIM_REGTEST_STRICT_FOLLOW:
2309 if (i == 0)
2310 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
2311 break;
2312 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
2313 if (i == 0)
2314 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
2315 else if (i == 1)
2316 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
2317 break;
2318 case HWSIM_REGTEST_ALL:
2319 if (i == 2)
2320 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
2321 else if (i == 3)
2322 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
2323 else if (i == 4)
2324 regulatory_hint(hw->wiphy, hwsim_alpha2s[2]);
2325 break;
2326 default:
2327 break;
2328 }
2329
2330 wiphy_debug(hw->wiphy, "hwaddr %pm registered\n",
2331 hw->wiphy->perm_addr);
2332
2333 data->debugfs = debugfs_create_dir("hwsim",
2334 hw->wiphy->debugfsdir);
2335 data->debugfs_ps = debugfs_create_file("ps", 0666,
2336 data->debugfs, data,
2337 &hwsim_fops_ps);
2338 data->debugfs_group = debugfs_create_file("group", 0666,
2339 data->debugfs, data,
2340 &hwsim_fops_group);
2341
2342 setup_timer(&data->beacon_timer, mac80211_hwsim_beacon,
2343 (unsigned long) hw);
2344
2345 list_add_tail(&data->list, &hwsim_radios);
2346 }
2347
2348 hwsim_mon = alloc_netdev(0, "hwsim%d", hwsim_mon_setup);
2349 if (hwsim_mon == NULL)
2350 goto failed;
2351
2352 rtnl_lock();
2353
2354 err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
2355 if (err < 0)
2356 goto failed_mon;
2357
2358
2359 err = register_netdevice(hwsim_mon);
2360 if (err < 0)
2361 goto failed_mon;
2362
2363 rtnl_unlock();
2364
2365 err = hwsim_init_netlink();
2366 if (err < 0)
2367 goto failed_nl;
2368
2369 return 0;
2370
2371 failed_nl:
2372 printk(KERN_DEBUG "mac_80211_hwsim: failed initializing netlink\n");
2373 return err;
2374
2375 failed_mon:
2376 rtnl_unlock();
2377 free_netdev(hwsim_mon);
2378 mac80211_hwsim_free();
2379 return err;
2380
2381 failed_hw:
2382 device_unregister(data->dev);
2383 failed_drvdata:
2384 ieee80211_free_hw(hw);
2385 failed:
2386 mac80211_hwsim_free();
2387 return err;
2388 }
2389 module_init(init_mac80211_hwsim);
2390
2391 static void __exit exit_mac80211_hwsim(void)
2392 {
2393 printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
2394
2395 hwsim_exit_netlink();
2396
2397 mac80211_hwsim_free();
2398 unregister_netdev(hwsim_mon);
2399 }
2400 module_exit(exit_mac80211_hwsim);
Linux kernel - Deliverables
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