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Merge tag 'batman-adv-for-davem' of git://git.open-mesh.org/linux-merge
[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[2];
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(NLMSG_GOODSIZE, 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) ||
682 !data->channel || !data2->channel ||
683 data->channel->center_freq != data2->channel->center_freq ||
684 !(data->group & data2->group))
685 continue;
686
687 nskb = skb_copy(skb, GFP_ATOMIC);
688 if (nskb == NULL)
689 continue;
690
691 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
692 ack = true;
693
694 /* set bcn timestamp relative to receiver mactime */
695 rx_status.mactime =
696 le64_to_cpu(__mac80211_hwsim_get_tsf(data2));
697 mgmt = (struct ieee80211_mgmt *) nskb->data;
698 if (ieee80211_is_beacon(mgmt->frame_control) ||
699 ieee80211_is_probe_resp(mgmt->frame_control))
700 mgmt->u.beacon.timestamp = cpu_to_le64(
701 rx_status.mactime +
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 if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
749 txi->flags |= IEEE80211_TX_STAT_ACK;
750 ieee80211_tx_status_irqsafe(hw, skb);
751 }
752
753
754 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
755 {
756 struct mac80211_hwsim_data *data = hw->priv;
757 wiphy_debug(hw->wiphy, "%s\n", __func__);
758 data->started = true;
759 return 0;
760 }
761
762
763 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
764 {
765 struct mac80211_hwsim_data *data = hw->priv;
766 data->started = false;
767 del_timer(&data->beacon_timer);
768 wiphy_debug(hw->wiphy, "%s\n", __func__);
769 }
770
771
772 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
773 struct ieee80211_vif *vif)
774 {
775 wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
776 __func__, ieee80211_vif_type_p2p(vif),
777 vif->addr);
778 hwsim_set_magic(vif);
779 return 0;
780 }
781
782
783 static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
784 struct ieee80211_vif *vif,
785 enum nl80211_iftype newtype,
786 bool newp2p)
787 {
788 newtype = ieee80211_iftype_p2p(newtype, newp2p);
789 wiphy_debug(hw->wiphy,
790 "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
791 __func__, ieee80211_vif_type_p2p(vif),
792 newtype, vif->addr);
793 hwsim_check_magic(vif);
794
795 return 0;
796 }
797
798 static void mac80211_hwsim_remove_interface(
799 struct ieee80211_hw *hw, struct ieee80211_vif *vif)
800 {
801 wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
802 __func__, ieee80211_vif_type_p2p(vif),
803 vif->addr);
804 hwsim_check_magic(vif);
805 hwsim_clear_magic(vif);
806 }
807
808
809 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
810 struct ieee80211_vif *vif)
811 {
812 struct ieee80211_hw *hw = arg;
813 struct sk_buff *skb;
814 struct ieee80211_tx_info *info;
815 u32 _pid;
816
817 hwsim_check_magic(vif);
818
819 if (vif->type != NL80211_IFTYPE_AP &&
820 vif->type != NL80211_IFTYPE_MESH_POINT &&
821 vif->type != NL80211_IFTYPE_ADHOC)
822 return;
823
824 skb = ieee80211_beacon_get(hw, vif);
825 if (skb == NULL)
826 return;
827 info = IEEE80211_SKB_CB(skb);
828
829 mac80211_hwsim_monitor_rx(hw, skb);
830
831 /* wmediumd mode check */
832 _pid = ACCESS_ONCE(wmediumd_pid);
833
834 if (_pid)
835 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
836
837 mac80211_hwsim_tx_frame_no_nl(hw, skb);
838 dev_kfree_skb(skb);
839 }
840
841
842 static void mac80211_hwsim_beacon(unsigned long arg)
843 {
844 struct ieee80211_hw *hw = (struct ieee80211_hw *) arg;
845 struct mac80211_hwsim_data *data = hw->priv;
846
847 if (!data->started)
848 return;
849
850 ieee80211_iterate_active_interfaces_atomic(
851 hw, mac80211_hwsim_beacon_tx, hw);
852
853 data->beacon_timer.expires = jiffies + data->beacon_int;
854 add_timer(&data->beacon_timer);
855 }
856
857 static const char *hwsim_chantypes[] = {
858 [NL80211_CHAN_NO_HT] = "noht",
859 [NL80211_CHAN_HT20] = "ht20",
860 [NL80211_CHAN_HT40MINUS] = "ht40-",
861 [NL80211_CHAN_HT40PLUS] = "ht40+",
862 };
863
864 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
865 {
866 struct mac80211_hwsim_data *data = hw->priv;
867 struct ieee80211_conf *conf = &hw->conf;
868 static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
869 [IEEE80211_SMPS_AUTOMATIC] = "auto",
870 [IEEE80211_SMPS_OFF] = "off",
871 [IEEE80211_SMPS_STATIC] = "static",
872 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
873 };
874
875 wiphy_debug(hw->wiphy,
876 "%s (freq=%d/%s idle=%d ps=%d smps=%s)\n",
877 __func__,
878 conf->channel->center_freq,
879 hwsim_chantypes[conf->channel_type],
880 !!(conf->flags & IEEE80211_CONF_IDLE),
881 !!(conf->flags & IEEE80211_CONF_PS),
882 smps_modes[conf->smps_mode]);
883
884 data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
885
886 data->channel = conf->channel;
887 data->power_level = conf->power_level;
888 if (!data->started || !data->beacon_int)
889 del_timer(&data->beacon_timer);
890 else
891 mod_timer(&data->beacon_timer, jiffies + data->beacon_int);
892
893 return 0;
894 }
895
896
897 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
898 unsigned int changed_flags,
899 unsigned int *total_flags,u64 multicast)
900 {
901 struct mac80211_hwsim_data *data = hw->priv;
902
903 wiphy_debug(hw->wiphy, "%s\n", __func__);
904
905 data->rx_filter = 0;
906 if (*total_flags & FIF_PROMISC_IN_BSS)
907 data->rx_filter |= FIF_PROMISC_IN_BSS;
908 if (*total_flags & FIF_ALLMULTI)
909 data->rx_filter |= FIF_ALLMULTI;
910
911 *total_flags = data->rx_filter;
912 }
913
914 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
915 struct ieee80211_vif *vif,
916 struct ieee80211_bss_conf *info,
917 u32 changed)
918 {
919 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
920 struct mac80211_hwsim_data *data = hw->priv;
921
922 hwsim_check_magic(vif);
923
924 wiphy_debug(hw->wiphy, "%s(changed=0x%x)\n", __func__, changed);
925
926 if (changed & BSS_CHANGED_BSSID) {
927 wiphy_debug(hw->wiphy, "%s: BSSID changed: %pM\n",
928 __func__, info->bssid);
929 memcpy(vp->bssid, info->bssid, ETH_ALEN);
930 }
931
932 if (changed & BSS_CHANGED_ASSOC) {
933 wiphy_debug(hw->wiphy, " ASSOC: assoc=%d aid=%d\n",
934 info->assoc, info->aid);
935 vp->assoc = info->assoc;
936 vp->aid = info->aid;
937 }
938
939 if (changed & BSS_CHANGED_BEACON_INT) {
940 wiphy_debug(hw->wiphy, " BCNINT: %d\n", info->beacon_int);
941 data->beacon_int = 1024 * info->beacon_int / 1000 * HZ / 1000;
942 if (WARN_ON(!data->beacon_int))
943 data->beacon_int = 1;
944 if (data->started)
945 mod_timer(&data->beacon_timer,
946 jiffies + data->beacon_int);
947 }
948
949 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
950 wiphy_debug(hw->wiphy, " ERP_CTS_PROT: %d\n",
951 info->use_cts_prot);
952 }
953
954 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
955 wiphy_debug(hw->wiphy, " ERP_PREAMBLE: %d\n",
956 info->use_short_preamble);
957 }
958
959 if (changed & BSS_CHANGED_ERP_SLOT) {
960 wiphy_debug(hw->wiphy, " ERP_SLOT: %d\n", info->use_short_slot);
961 }
962
963 if (changed & BSS_CHANGED_HT) {
964 wiphy_debug(hw->wiphy, " HT: op_mode=0x%x, chantype=%s\n",
965 info->ht_operation_mode,
966 hwsim_chantypes[info->channel_type]);
967 }
968
969 if (changed & BSS_CHANGED_BASIC_RATES) {
970 wiphy_debug(hw->wiphy, " BASIC_RATES: 0x%llx\n",
971 (unsigned long long) info->basic_rates);
972 }
973 }
974
975 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
976 struct ieee80211_vif *vif,
977 struct ieee80211_sta *sta)
978 {
979 hwsim_check_magic(vif);
980 hwsim_set_sta_magic(sta);
981
982 return 0;
983 }
984
985 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
986 struct ieee80211_vif *vif,
987 struct ieee80211_sta *sta)
988 {
989 hwsim_check_magic(vif);
990 hwsim_clear_sta_magic(sta);
991
992 return 0;
993 }
994
995 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
996 struct ieee80211_vif *vif,
997 enum sta_notify_cmd cmd,
998 struct ieee80211_sta *sta)
999 {
1000 hwsim_check_magic(vif);
1001
1002 switch (cmd) {
1003 case STA_NOTIFY_SLEEP:
1004 case STA_NOTIFY_AWAKE:
1005 /* TODO: make good use of these flags */
1006 break;
1007 default:
1008 WARN(1, "Invalid sta notify: %d\n", cmd);
1009 break;
1010 }
1011 }
1012
1013 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
1014 struct ieee80211_sta *sta,
1015 bool set)
1016 {
1017 hwsim_check_sta_magic(sta);
1018 return 0;
1019 }
1020
1021 static int mac80211_hwsim_conf_tx(
1022 struct ieee80211_hw *hw,
1023 struct ieee80211_vif *vif, u16 queue,
1024 const struct ieee80211_tx_queue_params *params)
1025 {
1026 wiphy_debug(hw->wiphy,
1027 "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
1028 __func__, queue,
1029 params->txop, params->cw_min,
1030 params->cw_max, params->aifs);
1031 return 0;
1032 }
1033
1034 static int mac80211_hwsim_get_survey(
1035 struct ieee80211_hw *hw, int idx,
1036 struct survey_info *survey)
1037 {
1038 struct ieee80211_conf *conf = &hw->conf;
1039
1040 wiphy_debug(hw->wiphy, "%s (idx=%d)\n", __func__, idx);
1041
1042 if (idx != 0)
1043 return -ENOENT;
1044
1045 /* Current channel */
1046 survey->channel = conf->channel;
1047
1048 /*
1049 * Magically conjured noise level --- this is only ok for simulated hardware.
1050 *
1051 * A real driver which cannot determine the real channel noise MUST NOT
1052 * report any noise, especially not a magically conjured one :-)
1053 */
1054 survey->filled = SURVEY_INFO_NOISE_DBM;
1055 survey->noise = -92;
1056
1057 return 0;
1058 }
1059
1060 #ifdef CONFIG_NL80211_TESTMODE
1061 /*
1062 * This section contains example code for using netlink
1063 * attributes with the testmode command in nl80211.
1064 */
1065
1066 /* These enums need to be kept in sync with userspace */
1067 enum hwsim_testmode_attr {
1068 __HWSIM_TM_ATTR_INVALID = 0,
1069 HWSIM_TM_ATTR_CMD = 1,
1070 HWSIM_TM_ATTR_PS = 2,
1071
1072 /* keep last */
1073 __HWSIM_TM_ATTR_AFTER_LAST,
1074 HWSIM_TM_ATTR_MAX = __HWSIM_TM_ATTR_AFTER_LAST - 1
1075 };
1076
1077 enum hwsim_testmode_cmd {
1078 HWSIM_TM_CMD_SET_PS = 0,
1079 HWSIM_TM_CMD_GET_PS = 1,
1080 };
1081
1082 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
1083 [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
1084 [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
1085 };
1086
1087 static int hwsim_fops_ps_write(void *dat, u64 val);
1088
1089 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
1090 void *data, int len)
1091 {
1092 struct mac80211_hwsim_data *hwsim = hw->priv;
1093 struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
1094 struct sk_buff *skb;
1095 int err, ps;
1096
1097 err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
1098 hwsim_testmode_policy);
1099 if (err)
1100 return err;
1101
1102 if (!tb[HWSIM_TM_ATTR_CMD])
1103 return -EINVAL;
1104
1105 switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
1106 case HWSIM_TM_CMD_SET_PS:
1107 if (!tb[HWSIM_TM_ATTR_PS])
1108 return -EINVAL;
1109 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
1110 return hwsim_fops_ps_write(hwsim, ps);
1111 case HWSIM_TM_CMD_GET_PS:
1112 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
1113 nla_total_size(sizeof(u32)));
1114 if (!skb)
1115 return -ENOMEM;
1116 if (nla_put_u32(skb, HWSIM_TM_ATTR_PS, hwsim->ps))
1117 goto nla_put_failure;
1118 return cfg80211_testmode_reply(skb);
1119 default:
1120 return -EOPNOTSUPP;
1121 }
1122
1123 nla_put_failure:
1124 kfree_skb(skb);
1125 return -ENOBUFS;
1126 }
1127 #endif
1128
1129 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
1130 struct ieee80211_vif *vif,
1131 enum ieee80211_ampdu_mlme_action action,
1132 struct ieee80211_sta *sta, u16 tid, u16 *ssn,
1133 u8 buf_size)
1134 {
1135 switch (action) {
1136 case IEEE80211_AMPDU_TX_START:
1137 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1138 break;
1139 case IEEE80211_AMPDU_TX_STOP:
1140 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1141 break;
1142 case IEEE80211_AMPDU_TX_OPERATIONAL:
1143 break;
1144 case IEEE80211_AMPDU_RX_START:
1145 case IEEE80211_AMPDU_RX_STOP:
1146 break;
1147 default:
1148 return -EOPNOTSUPP;
1149 }
1150
1151 return 0;
1152 }
1153
1154 static void mac80211_hwsim_flush(struct ieee80211_hw *hw, bool drop)
1155 {
1156 /* Not implemented, queues only on kernel side */
1157 }
1158
1159 struct hw_scan_done {
1160 struct delayed_work w;
1161 struct ieee80211_hw *hw;
1162 };
1163
1164 static void hw_scan_done(struct work_struct *work)
1165 {
1166 struct hw_scan_done *hsd =
1167 container_of(work, struct hw_scan_done, w.work);
1168
1169 ieee80211_scan_completed(hsd->hw, false);
1170 kfree(hsd);
1171 }
1172
1173 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
1174 struct ieee80211_vif *vif,
1175 struct cfg80211_scan_request *req)
1176 {
1177 struct hw_scan_done *hsd = kzalloc(sizeof(*hsd), GFP_KERNEL);
1178 int i;
1179
1180 if (!hsd)
1181 return -ENOMEM;
1182
1183 hsd->hw = hw;
1184 INIT_DELAYED_WORK(&hsd->w, hw_scan_done);
1185
1186 printk(KERN_DEBUG "hwsim hw_scan request\n");
1187 for (i = 0; i < req->n_channels; i++)
1188 printk(KERN_DEBUG "hwsim hw_scan freq %d\n",
1189 req->channels[i]->center_freq);
1190 print_hex_dump(KERN_DEBUG, "scan IEs: ", DUMP_PREFIX_OFFSET,
1191 16, 1, req->ie, req->ie_len, 1);
1192
1193 ieee80211_queue_delayed_work(hw, &hsd->w, 2 * HZ);
1194
1195 return 0;
1196 }
1197
1198 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw)
1199 {
1200 struct mac80211_hwsim_data *hwsim = hw->priv;
1201
1202 mutex_lock(&hwsim->mutex);
1203
1204 if (hwsim->scanning) {
1205 printk(KERN_DEBUG "two hwsim sw_scans detected!\n");
1206 goto out;
1207 }
1208
1209 printk(KERN_DEBUG "hwsim sw_scan request, prepping stuff\n");
1210 hwsim->scanning = true;
1211
1212 out:
1213 mutex_unlock(&hwsim->mutex);
1214 }
1215
1216 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw)
1217 {
1218 struct mac80211_hwsim_data *hwsim = hw->priv;
1219
1220 mutex_lock(&hwsim->mutex);
1221
1222 printk(KERN_DEBUG "hwsim sw_scan_complete\n");
1223 hwsim->scanning = false;
1224
1225 mutex_unlock(&hwsim->mutex);
1226 }
1227
1228 static struct ieee80211_ops mac80211_hwsim_ops =
1229 {
1230 .tx = mac80211_hwsim_tx,
1231 .start = mac80211_hwsim_start,
1232 .stop = mac80211_hwsim_stop,
1233 .add_interface = mac80211_hwsim_add_interface,
1234 .change_interface = mac80211_hwsim_change_interface,
1235 .remove_interface = mac80211_hwsim_remove_interface,
1236 .config = mac80211_hwsim_config,
1237 .configure_filter = mac80211_hwsim_configure_filter,
1238 .bss_info_changed = mac80211_hwsim_bss_info_changed,
1239 .sta_add = mac80211_hwsim_sta_add,
1240 .sta_remove = mac80211_hwsim_sta_remove,
1241 .sta_notify = mac80211_hwsim_sta_notify,
1242 .set_tim = mac80211_hwsim_set_tim,
1243 .conf_tx = mac80211_hwsim_conf_tx,
1244 .get_survey = mac80211_hwsim_get_survey,
1245 CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)
1246 .ampdu_action = mac80211_hwsim_ampdu_action,
1247 .sw_scan_start = mac80211_hwsim_sw_scan,
1248 .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
1249 .flush = mac80211_hwsim_flush,
1250 .get_tsf = mac80211_hwsim_get_tsf,
1251 .set_tsf = mac80211_hwsim_set_tsf,
1252 };
1253
1254
1255 static void mac80211_hwsim_free(void)
1256 {
1257 struct list_head tmplist, *i, *tmp;
1258 struct mac80211_hwsim_data *data, *tmpdata;
1259
1260 INIT_LIST_HEAD(&tmplist);
1261
1262 spin_lock_bh(&hwsim_radio_lock);
1263 list_for_each_safe(i, tmp, &hwsim_radios)
1264 list_move(i, &tmplist);
1265 spin_unlock_bh(&hwsim_radio_lock);
1266
1267 list_for_each_entry_safe(data, tmpdata, &tmplist, list) {
1268 debugfs_remove(data->debugfs_group);
1269 debugfs_remove(data->debugfs_ps);
1270 debugfs_remove(data->debugfs);
1271 ieee80211_unregister_hw(data->hw);
1272 device_unregister(data->dev);
1273 ieee80211_free_hw(data->hw);
1274 }
1275 class_destroy(hwsim_class);
1276 }
1277
1278
1279 static struct device_driver mac80211_hwsim_driver = {
1280 .name = "mac80211_hwsim"
1281 };
1282
1283 static const struct net_device_ops hwsim_netdev_ops = {
1284 .ndo_start_xmit = hwsim_mon_xmit,
1285 .ndo_change_mtu = eth_change_mtu,
1286 .ndo_set_mac_address = eth_mac_addr,
1287 .ndo_validate_addr = eth_validate_addr,
1288 };
1289
1290 static void hwsim_mon_setup(struct net_device *dev)
1291 {
1292 dev->netdev_ops = &hwsim_netdev_ops;
1293 dev->destructor = free_netdev;
1294 ether_setup(dev);
1295 dev->tx_queue_len = 0;
1296 dev->type = ARPHRD_IEEE80211_RADIOTAP;
1297 memset(dev->dev_addr, 0, ETH_ALEN);
1298 dev->dev_addr[0] = 0x12;
1299 }
1300
1301
1302 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
1303 {
1304 struct mac80211_hwsim_data *data = dat;
1305 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1306 struct sk_buff *skb;
1307 struct ieee80211_pspoll *pspoll;
1308 u32 _pid;
1309
1310 if (!vp->assoc)
1311 return;
1312
1313 wiphy_debug(data->hw->wiphy,
1314 "%s: send PS-Poll to %pM for aid %d\n",
1315 __func__, vp->bssid, vp->aid);
1316
1317 skb = dev_alloc_skb(sizeof(*pspoll));
1318 if (!skb)
1319 return;
1320 pspoll = (void *) skb_put(skb, sizeof(*pspoll));
1321 pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
1322 IEEE80211_STYPE_PSPOLL |
1323 IEEE80211_FCTL_PM);
1324 pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
1325 memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
1326 memcpy(pspoll->ta, mac, ETH_ALEN);
1327
1328 /* wmediumd mode check */
1329 _pid = ACCESS_ONCE(wmediumd_pid);
1330
1331 if (_pid)
1332 return mac80211_hwsim_tx_frame_nl(data->hw, skb, _pid);
1333
1334 if (!mac80211_hwsim_tx_frame_no_nl(data->hw, skb))
1335 printk(KERN_DEBUG "%s: PS-poll frame not ack'ed\n", __func__);
1336 dev_kfree_skb(skb);
1337 }
1338
1339
1340 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
1341 struct ieee80211_vif *vif, int ps)
1342 {
1343 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1344 struct sk_buff *skb;
1345 struct ieee80211_hdr *hdr;
1346 u32 _pid;
1347
1348 if (!vp->assoc)
1349 return;
1350
1351 wiphy_debug(data->hw->wiphy,
1352 "%s: send data::nullfunc to %pM ps=%d\n",
1353 __func__, vp->bssid, ps);
1354
1355 skb = dev_alloc_skb(sizeof(*hdr));
1356 if (!skb)
1357 return;
1358 hdr = (void *) skb_put(skb, sizeof(*hdr) - ETH_ALEN);
1359 hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
1360 IEEE80211_STYPE_NULLFUNC |
1361 (ps ? IEEE80211_FCTL_PM : 0));
1362 hdr->duration_id = cpu_to_le16(0);
1363 memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
1364 memcpy(hdr->addr2, mac, ETH_ALEN);
1365 memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
1366
1367 /* wmediumd mode check */
1368 _pid = ACCESS_ONCE(wmediumd_pid);
1369
1370 if (_pid)
1371 return mac80211_hwsim_tx_frame_nl(data->hw, skb, _pid);
1372
1373 if (!mac80211_hwsim_tx_frame_no_nl(data->hw, skb))
1374 printk(KERN_DEBUG "%s: nullfunc frame not ack'ed\n", __func__);
1375 dev_kfree_skb(skb);
1376 }
1377
1378
1379 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
1380 struct ieee80211_vif *vif)
1381 {
1382 struct mac80211_hwsim_data *data = dat;
1383 hwsim_send_nullfunc(data, mac, vif, 1);
1384 }
1385
1386
1387 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
1388 struct ieee80211_vif *vif)
1389 {
1390 struct mac80211_hwsim_data *data = dat;
1391 hwsim_send_nullfunc(data, mac, vif, 0);
1392 }
1393
1394
1395 static int hwsim_fops_ps_read(void *dat, u64 *val)
1396 {
1397 struct mac80211_hwsim_data *data = dat;
1398 *val = data->ps;
1399 return 0;
1400 }
1401
1402 static int hwsim_fops_ps_write(void *dat, u64 val)
1403 {
1404 struct mac80211_hwsim_data *data = dat;
1405 enum ps_mode old_ps;
1406
1407 if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
1408 val != PS_MANUAL_POLL)
1409 return -EINVAL;
1410
1411 old_ps = data->ps;
1412 data->ps = val;
1413
1414 if (val == PS_MANUAL_POLL) {
1415 ieee80211_iterate_active_interfaces(data->hw,
1416 hwsim_send_ps_poll, data);
1417 data->ps_poll_pending = true;
1418 } else if (old_ps == PS_DISABLED && val != PS_DISABLED) {
1419 ieee80211_iterate_active_interfaces(data->hw,
1420 hwsim_send_nullfunc_ps,
1421 data);
1422 } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
1423 ieee80211_iterate_active_interfaces(data->hw,
1424 hwsim_send_nullfunc_no_ps,
1425 data);
1426 }
1427
1428 return 0;
1429 }
1430
1431 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
1432 "%llu\n");
1433
1434
1435 static int hwsim_fops_group_read(void *dat, u64 *val)
1436 {
1437 struct mac80211_hwsim_data *data = dat;
1438 *val = data->group;
1439 return 0;
1440 }
1441
1442 static int hwsim_fops_group_write(void *dat, u64 val)
1443 {
1444 struct mac80211_hwsim_data *data = dat;
1445 data->group = val;
1446 return 0;
1447 }
1448
1449 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
1450 hwsim_fops_group_read, hwsim_fops_group_write,
1451 "%llx\n");
1452
1453 static struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(
1454 struct mac_address *addr)
1455 {
1456 struct mac80211_hwsim_data *data;
1457 bool _found = false;
1458
1459 spin_lock_bh(&hwsim_radio_lock);
1460 list_for_each_entry(data, &hwsim_radios, list) {
1461 if (memcmp(data->addresses[1].addr, addr,
1462 sizeof(struct mac_address)) == 0) {
1463 _found = true;
1464 break;
1465 }
1466 }
1467 spin_unlock_bh(&hwsim_radio_lock);
1468
1469 if (!_found)
1470 return NULL;
1471
1472 return data;
1473 }
1474
1475 static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
1476 struct genl_info *info)
1477 {
1478
1479 struct ieee80211_hdr *hdr;
1480 struct mac80211_hwsim_data *data2;
1481 struct ieee80211_tx_info *txi;
1482 struct hwsim_tx_rate *tx_attempts;
1483 struct sk_buff __user *ret_skb;
1484 struct sk_buff *skb, *tmp;
1485 struct mac_address *src;
1486 unsigned int hwsim_flags;
1487
1488 int i;
1489 bool found = false;
1490
1491 if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
1492 !info->attrs[HWSIM_ATTR_FLAGS] ||
1493 !info->attrs[HWSIM_ATTR_COOKIE] ||
1494 !info->attrs[HWSIM_ATTR_TX_INFO])
1495 goto out;
1496
1497 src = (struct mac_address *)nla_data(
1498 info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
1499 hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
1500
1501 ret_skb = (struct sk_buff __user *)
1502 (unsigned long) nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
1503
1504 data2 = get_hwsim_data_ref_from_addr(src);
1505
1506 if (data2 == NULL)
1507 goto out;
1508
1509 /* look for the skb matching the cookie passed back from user */
1510 skb_queue_walk_safe(&data2->pending, skb, tmp) {
1511 if (skb == ret_skb) {
1512 skb_unlink(skb, &data2->pending);
1513 found = true;
1514 break;
1515 }
1516 }
1517
1518 /* not found */
1519 if (!found)
1520 goto out;
1521
1522 /* Tx info received because the frame was broadcasted on user space,
1523 so we get all the necessary info: tx attempts and skb control buff */
1524
1525 tx_attempts = (struct hwsim_tx_rate *)nla_data(
1526 info->attrs[HWSIM_ATTR_TX_INFO]);
1527
1528 /* now send back TX status */
1529 txi = IEEE80211_SKB_CB(skb);
1530
1531 if (txi->control.vif)
1532 hwsim_check_magic(txi->control.vif);
1533 if (txi->control.sta)
1534 hwsim_check_sta_magic(txi->control.sta);
1535
1536 ieee80211_tx_info_clear_status(txi);
1537
1538 for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
1539 txi->status.rates[i].idx = tx_attempts[i].idx;
1540 txi->status.rates[i].count = tx_attempts[i].count;
1541 /*txi->status.rates[i].flags = 0;*/
1542 }
1543
1544 txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
1545
1546 if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
1547 (hwsim_flags & HWSIM_TX_STAT_ACK)) {
1548 if (skb->len >= 16) {
1549 hdr = (struct ieee80211_hdr *) skb->data;
1550 mac80211_hwsim_monitor_ack(data2->hw, hdr->addr2);
1551 }
1552 }
1553 ieee80211_tx_status_irqsafe(data2->hw, skb);
1554 return 0;
1555 out:
1556 return -EINVAL;
1557
1558 }
1559
1560 static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
1561 struct genl_info *info)
1562 {
1563
1564 struct mac80211_hwsim_data *data2;
1565 struct ieee80211_rx_status rx_status;
1566 struct mac_address *dst;
1567 int frame_data_len;
1568 char *frame_data;
1569 struct sk_buff *skb = NULL;
1570
1571 if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
1572 !info->attrs[HWSIM_ATTR_FRAME] ||
1573 !info->attrs[HWSIM_ATTR_RX_RATE] ||
1574 !info->attrs[HWSIM_ATTR_SIGNAL])
1575 goto out;
1576
1577 dst = (struct mac_address *)nla_data(
1578 info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
1579
1580 frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
1581 frame_data = (char *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
1582
1583 /* Allocate new skb here */
1584 skb = alloc_skb(frame_data_len, GFP_KERNEL);
1585 if (skb == NULL)
1586 goto err;
1587
1588 if (frame_data_len <= IEEE80211_MAX_DATA_LEN) {
1589 /* Copy the data */
1590 memcpy(skb_put(skb, frame_data_len), frame_data,
1591 frame_data_len);
1592 } else
1593 goto err;
1594
1595 data2 = get_hwsim_data_ref_from_addr(dst);
1596
1597 if (data2 == NULL)
1598 goto out;
1599
1600 /* check if radio is configured properly */
1601
1602 if (data2->idle || !data2->started || !data2->channel)
1603 goto out;
1604
1605 /*A frame is received from user space*/
1606 memset(&rx_status, 0, sizeof(rx_status));
1607 rx_status.freq = data2->channel->center_freq;
1608 rx_status.band = data2->channel->band;
1609 rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
1610 rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
1611
1612 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
1613 ieee80211_rx_irqsafe(data2->hw, skb);
1614
1615 return 0;
1616 err:
1617 printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
1618 goto out;
1619 out:
1620 dev_kfree_skb(skb);
1621 return -EINVAL;
1622 }
1623
1624 static int hwsim_register_received_nl(struct sk_buff *skb_2,
1625 struct genl_info *info)
1626 {
1627 if (info == NULL)
1628 goto out;
1629
1630 wmediumd_pid = info->snd_pid;
1631
1632 printk(KERN_DEBUG "mac80211_hwsim: received a REGISTER, "
1633 "switching to wmediumd mode with pid %d\n", info->snd_pid);
1634
1635 return 0;
1636 out:
1637 printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
1638 return -EINVAL;
1639 }
1640
1641 /* Generic Netlink operations array */
1642 static struct genl_ops hwsim_ops[] = {
1643 {
1644 .cmd = HWSIM_CMD_REGISTER,
1645 .policy = hwsim_genl_policy,
1646 .doit = hwsim_register_received_nl,
1647 .flags = GENL_ADMIN_PERM,
1648 },
1649 {
1650 .cmd = HWSIM_CMD_FRAME,
1651 .policy = hwsim_genl_policy,
1652 .doit = hwsim_cloned_frame_received_nl,
1653 },
1654 {
1655 .cmd = HWSIM_CMD_TX_INFO_FRAME,
1656 .policy = hwsim_genl_policy,
1657 .doit = hwsim_tx_info_frame_received_nl,
1658 },
1659 };
1660
1661 static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
1662 unsigned long state,
1663 void *_notify)
1664 {
1665 struct netlink_notify *notify = _notify;
1666
1667 if (state != NETLINK_URELEASE)
1668 return NOTIFY_DONE;
1669
1670 if (notify->pid == wmediumd_pid) {
1671 printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
1672 " socket, switching to perfect channel medium\n");
1673 wmediumd_pid = 0;
1674 }
1675 return NOTIFY_DONE;
1676
1677 }
1678
1679 static struct notifier_block hwsim_netlink_notifier = {
1680 .notifier_call = mac80211_hwsim_netlink_notify,
1681 };
1682
1683 static int hwsim_init_netlink(void)
1684 {
1685 int rc;
1686 printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
1687
1688 rc = genl_register_family_with_ops(&hwsim_genl_family,
1689 hwsim_ops, ARRAY_SIZE(hwsim_ops));
1690 if (rc)
1691 goto failure;
1692
1693 rc = netlink_register_notifier(&hwsim_netlink_notifier);
1694 if (rc)
1695 goto failure;
1696
1697 return 0;
1698
1699 failure:
1700 printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
1701 return -EINVAL;
1702 }
1703
1704 static void hwsim_exit_netlink(void)
1705 {
1706 int ret;
1707
1708 printk(KERN_INFO "mac80211_hwsim: closing netlink\n");
1709 /* unregister the notifier */
1710 netlink_unregister_notifier(&hwsim_netlink_notifier);
1711 /* unregister the family */
1712 ret = genl_unregister_family(&hwsim_genl_family);
1713 if (ret)
1714 printk(KERN_DEBUG "mac80211_hwsim: "
1715 "unregister family %i\n", ret);
1716 }
1717
1718 static int __init init_mac80211_hwsim(void)
1719 {
1720 int i, err = 0;
1721 u8 addr[ETH_ALEN];
1722 struct mac80211_hwsim_data *data;
1723 struct ieee80211_hw *hw;
1724 enum ieee80211_band band;
1725
1726 if (radios < 1 || radios > 100)
1727 return -EINVAL;
1728
1729 if (fake_hw_scan) {
1730 mac80211_hwsim_ops.hw_scan = mac80211_hwsim_hw_scan;
1731 mac80211_hwsim_ops.sw_scan_start = NULL;
1732 mac80211_hwsim_ops.sw_scan_complete = NULL;
1733 }
1734
1735 spin_lock_init(&hwsim_radio_lock);
1736 INIT_LIST_HEAD(&hwsim_radios);
1737
1738 hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
1739 if (IS_ERR(hwsim_class))
1740 return PTR_ERR(hwsim_class);
1741
1742 memset(addr, 0, ETH_ALEN);
1743 addr[0] = 0x02;
1744
1745 for (i = 0; i < radios; i++) {
1746 printk(KERN_DEBUG "mac80211_hwsim: Initializing radio %d\n",
1747 i);
1748 hw = ieee80211_alloc_hw(sizeof(*data), &mac80211_hwsim_ops);
1749 if (!hw) {
1750 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw "
1751 "failed\n");
1752 err = -ENOMEM;
1753 goto failed;
1754 }
1755 data = hw->priv;
1756 data->hw = hw;
1757
1758 data->dev = device_create(hwsim_class, NULL, 0, hw,
1759 "hwsim%d", i);
1760 if (IS_ERR(data->dev)) {
1761 printk(KERN_DEBUG
1762 "mac80211_hwsim: device_create "
1763 "failed (%ld)\n", PTR_ERR(data->dev));
1764 err = -ENOMEM;
1765 goto failed_drvdata;
1766 }
1767 data->dev->driver = &mac80211_hwsim_driver;
1768 skb_queue_head_init(&data->pending);
1769
1770 SET_IEEE80211_DEV(hw, data->dev);
1771 addr[3] = i >> 8;
1772 addr[4] = i;
1773 memcpy(data->addresses[0].addr, addr, ETH_ALEN);
1774 memcpy(data->addresses[1].addr, addr, ETH_ALEN);
1775 data->addresses[1].addr[0] |= 0x40;
1776 hw->wiphy->n_addresses = 2;
1777 hw->wiphy->addresses = data->addresses;
1778
1779 if (fake_hw_scan) {
1780 hw->wiphy->max_scan_ssids = 255;
1781 hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
1782 }
1783
1784 hw->channel_change_time = 1;
1785 hw->queues = 4;
1786 hw->wiphy->interface_modes =
1787 BIT(NL80211_IFTYPE_STATION) |
1788 BIT(NL80211_IFTYPE_AP) |
1789 BIT(NL80211_IFTYPE_P2P_CLIENT) |
1790 BIT(NL80211_IFTYPE_P2P_GO) |
1791 BIT(NL80211_IFTYPE_ADHOC) |
1792 BIT(NL80211_IFTYPE_MESH_POINT);
1793
1794 hw->flags = IEEE80211_HW_MFP_CAPABLE |
1795 IEEE80211_HW_SIGNAL_DBM |
1796 IEEE80211_HW_SUPPORTS_STATIC_SMPS |
1797 IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
1798 IEEE80211_HW_AMPDU_AGGREGATION |
1799 IEEE80211_HW_WANT_MONITOR_VIF;
1800
1801 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS |
1802 WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL;
1803
1804 /* ask mac80211 to reserve space for magic */
1805 hw->vif_data_size = sizeof(struct hwsim_vif_priv);
1806 hw->sta_data_size = sizeof(struct hwsim_sta_priv);
1807
1808 memcpy(data->channels_2ghz, hwsim_channels_2ghz,
1809 sizeof(hwsim_channels_2ghz));
1810 memcpy(data->channels_5ghz, hwsim_channels_5ghz,
1811 sizeof(hwsim_channels_5ghz));
1812 memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
1813
1814 for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) {
1815 struct ieee80211_supported_band *sband = &data->bands[band];
1816 switch (band) {
1817 case IEEE80211_BAND_2GHZ:
1818 sband->channels = data->channels_2ghz;
1819 sband->n_channels =
1820 ARRAY_SIZE(hwsim_channels_2ghz);
1821 sband->bitrates = data->rates;
1822 sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
1823 break;
1824 case IEEE80211_BAND_5GHZ:
1825 sband->channels = data->channels_5ghz;
1826 sband->n_channels =
1827 ARRAY_SIZE(hwsim_channels_5ghz);
1828 sband->bitrates = data->rates + 4;
1829 sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
1830 break;
1831 default:
1832 break;
1833 }
1834
1835 sband->ht_cap.ht_supported = true;
1836 sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
1837 IEEE80211_HT_CAP_GRN_FLD |
1838 IEEE80211_HT_CAP_SGI_40 |
1839 IEEE80211_HT_CAP_DSSSCCK40;
1840 sband->ht_cap.ampdu_factor = 0x3;
1841 sband->ht_cap.ampdu_density = 0x6;
1842 memset(&sband->ht_cap.mcs, 0,
1843 sizeof(sband->ht_cap.mcs));
1844 sband->ht_cap.mcs.rx_mask[0] = 0xff;
1845 sband->ht_cap.mcs.rx_mask[1] = 0xff;
1846 sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
1847
1848 hw->wiphy->bands[band] = sband;
1849 }
1850 /* By default all radios are belonging to the first group */
1851 data->group = 1;
1852 mutex_init(&data->mutex);
1853
1854 /* Enable frame retransmissions for lossy channels */
1855 hw->max_rates = 4;
1856 hw->max_rate_tries = 11;
1857
1858 /* Work to be done prior to ieee80211_register_hw() */
1859 switch (regtest) {
1860 case HWSIM_REGTEST_DISABLED:
1861 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
1862 case HWSIM_REGTEST_DRIVER_REG_ALL:
1863 case HWSIM_REGTEST_DIFF_COUNTRY:
1864 /*
1865 * Nothing to be done for driver regulatory domain
1866 * hints prior to ieee80211_register_hw()
1867 */
1868 break;
1869 case HWSIM_REGTEST_WORLD_ROAM:
1870 if (i == 0) {
1871 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1872 wiphy_apply_custom_regulatory(hw->wiphy,
1873 &hwsim_world_regdom_custom_01);
1874 }
1875 break;
1876 case HWSIM_REGTEST_CUSTOM_WORLD:
1877 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1878 wiphy_apply_custom_regulatory(hw->wiphy,
1879 &hwsim_world_regdom_custom_01);
1880 break;
1881 case HWSIM_REGTEST_CUSTOM_WORLD_2:
1882 if (i == 0) {
1883 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1884 wiphy_apply_custom_regulatory(hw->wiphy,
1885 &hwsim_world_regdom_custom_01);
1886 } else if (i == 1) {
1887 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1888 wiphy_apply_custom_regulatory(hw->wiphy,
1889 &hwsim_world_regdom_custom_02);
1890 }
1891 break;
1892 case HWSIM_REGTEST_STRICT_ALL:
1893 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1894 break;
1895 case HWSIM_REGTEST_STRICT_FOLLOW:
1896 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
1897 if (i == 0)
1898 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1899 break;
1900 case HWSIM_REGTEST_ALL:
1901 if (i == 0) {
1902 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1903 wiphy_apply_custom_regulatory(hw->wiphy,
1904 &hwsim_world_regdom_custom_01);
1905 } else if (i == 1) {
1906 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1907 wiphy_apply_custom_regulatory(hw->wiphy,
1908 &hwsim_world_regdom_custom_02);
1909 } else if (i == 4)
1910 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1911 break;
1912 default:
1913 break;
1914 }
1915
1916 /* give the regulatory workqueue a chance to run */
1917 if (regtest)
1918 schedule_timeout_interruptible(1);
1919 err = ieee80211_register_hw(hw);
1920 if (err < 0) {
1921 printk(KERN_DEBUG "mac80211_hwsim: "
1922 "ieee80211_register_hw failed (%d)\n", err);
1923 goto failed_hw;
1924 }
1925
1926 /* Work to be done after to ieee80211_register_hw() */
1927 switch (regtest) {
1928 case HWSIM_REGTEST_WORLD_ROAM:
1929 case HWSIM_REGTEST_DISABLED:
1930 break;
1931 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
1932 if (!i)
1933 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1934 break;
1935 case HWSIM_REGTEST_DRIVER_REG_ALL:
1936 case HWSIM_REGTEST_STRICT_ALL:
1937 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1938 break;
1939 case HWSIM_REGTEST_DIFF_COUNTRY:
1940 if (i < ARRAY_SIZE(hwsim_alpha2s))
1941 regulatory_hint(hw->wiphy, hwsim_alpha2s[i]);
1942 break;
1943 case HWSIM_REGTEST_CUSTOM_WORLD:
1944 case HWSIM_REGTEST_CUSTOM_WORLD_2:
1945 /*
1946 * Nothing to be done for custom world regulatory
1947 * domains after to ieee80211_register_hw
1948 */
1949 break;
1950 case HWSIM_REGTEST_STRICT_FOLLOW:
1951 if (i == 0)
1952 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1953 break;
1954 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
1955 if (i == 0)
1956 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1957 else if (i == 1)
1958 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
1959 break;
1960 case HWSIM_REGTEST_ALL:
1961 if (i == 2)
1962 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1963 else if (i == 3)
1964 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
1965 else if (i == 4)
1966 regulatory_hint(hw->wiphy, hwsim_alpha2s[2]);
1967 break;
1968 default:
1969 break;
1970 }
1971
1972 wiphy_debug(hw->wiphy, "hwaddr %pm registered\n",
1973 hw->wiphy->perm_addr);
1974
1975 data->debugfs = debugfs_create_dir("hwsim",
1976 hw->wiphy->debugfsdir);
1977 data->debugfs_ps = debugfs_create_file("ps", 0666,
1978 data->debugfs, data,
1979 &hwsim_fops_ps);
1980 data->debugfs_group = debugfs_create_file("group", 0666,
1981 data->debugfs, data,
1982 &hwsim_fops_group);
1983
1984 setup_timer(&data->beacon_timer, mac80211_hwsim_beacon,
1985 (unsigned long) hw);
1986
1987 list_add_tail(&data->list, &hwsim_radios);
1988 }
1989
1990 hwsim_mon = alloc_netdev(0, "hwsim%d", hwsim_mon_setup);
1991 if (hwsim_mon == NULL)
1992 goto failed;
1993
1994 rtnl_lock();
1995
1996 err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
1997 if (err < 0)
1998 goto failed_mon;
1999
2000
2001 err = register_netdevice(hwsim_mon);
2002 if (err < 0)
2003 goto failed_mon;
2004
2005 rtnl_unlock();
2006
2007 err = hwsim_init_netlink();
2008 if (err < 0)
2009 goto failed_nl;
2010
2011 return 0;
2012
2013 failed_nl:
2014 printk(KERN_DEBUG "mac_80211_hwsim: failed initializing netlink\n");
2015 return err;
2016
2017 failed_mon:
2018 rtnl_unlock();
2019 free_netdev(hwsim_mon);
2020 mac80211_hwsim_free();
2021 return err;
2022
2023 failed_hw:
2024 device_unregister(data->dev);
2025 failed_drvdata:
2026 ieee80211_free_hw(hw);
2027 failed:
2028 mac80211_hwsim_free();
2029 return err;
2030 }
2031
2032
2033 static void __exit exit_mac80211_hwsim(void)
2034 {
2035 printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
2036
2037 hwsim_exit_netlink();
2038
2039 mac80211_hwsim_free();
2040 unregister_netdev(hwsim_mon);
2041 }
2042
2043
2044 module_init(init_mac80211_hwsim);
2045 module_exit(exit_mac80211_hwsim);
Linux kernel - Deliverables
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