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mac80211_hwsim: add support for P2P Device
[deliverable/linux.git] / drivers / net / wireless / mac80211_hwsim.c
1 /*
2 * mac80211_hwsim - software simulator of 802.11 radio(s) for mac80211
3 * Copyright (c) 2008, Jouni Malinen <j@w1.fi>
4 * Copyright (c) 2011, Javier Lopez <jlopex@gmail.com>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 */
10
11 /*
12 * TODO:
13 * - Add TSF sync and fix IBSS beacon transmission by adding
14 * competition for "air time" at TBTT
15 * - RX filtering based on filter configuration (data->rx_filter)
16 */
17
18 #include <linux/list.h>
19 #include <linux/slab.h>
20 #include <linux/spinlock.h>
21 #include <net/dst.h>
22 #include <net/xfrm.h>
23 #include <net/mac80211.h>
24 #include <net/ieee80211_radiotap.h>
25 #include <linux/if_arp.h>
26 #include <linux/rtnetlink.h>
27 #include <linux/etherdevice.h>
28 #include <linux/debugfs.h>
29 #include <linux/module.h>
30 #include <linux/ktime.h>
31 #include <net/genetlink.h>
32 #include "mac80211_hwsim.h"
33
34 #define WARN_QUEUE 100
35 #define MAX_QUEUE 200
36
37 MODULE_AUTHOR("Jouni Malinen");
38 MODULE_DESCRIPTION("Software simulator of 802.11 radio(s) for mac80211");
39 MODULE_LICENSE("GPL");
40
41 static u32 wmediumd_pid;
42
43 static int radios = 2;
44 module_param(radios, int, 0444);
45 MODULE_PARM_DESC(radios, "Number of simulated radios");
46
47 static bool fake_hw_scan;
48 module_param(fake_hw_scan, bool, 0444);
49 MODULE_PARM_DESC(fake_hw_scan, "Install fake (no-op) hw-scan handler");
50
51 /**
52 * enum hwsim_regtest - the type of regulatory tests we offer
53 *
54 * These are the different values you can use for the regtest
55 * module parameter. This is useful to help test world roaming
56 * and the driver regulatory_hint() call and combinations of these.
57 * If you want to do specific alpha2 regulatory domain tests simply
58 * use the userspace regulatory request as that will be respected as
59 * well without the need of this module parameter. This is designed
60 * only for testing the driver regulatory request, world roaming
61 * and all possible combinations.
62 *
63 * @HWSIM_REGTEST_DISABLED: No regulatory tests are performed,
64 * this is the default value.
65 * @HWSIM_REGTEST_DRIVER_REG_FOLLOW: Used for testing the driver regulatory
66 * hint, only one driver regulatory hint will be sent as such the
67 * secondary radios are expected to follow.
68 * @HWSIM_REGTEST_DRIVER_REG_ALL: Used for testing the driver regulatory
69 * request with all radios reporting the same regulatory domain.
70 * @HWSIM_REGTEST_DIFF_COUNTRY: Used for testing the drivers calling
71 * different regulatory domains requests. Expected behaviour is for
72 * an intersection to occur but each device will still use their
73 * respective regulatory requested domains. Subsequent radios will
74 * use the resulting intersection.
75 * @HWSIM_REGTEST_WORLD_ROAM: Used for testing the world roaming. We accomplish
76 * this by using a custom beacon-capable regulatory domain for the first
77 * radio. All other device world roam.
78 * @HWSIM_REGTEST_CUSTOM_WORLD: Used for testing the custom world regulatory
79 * domain requests. All radios will adhere to this custom world regulatory
80 * domain.
81 * @HWSIM_REGTEST_CUSTOM_WORLD_2: Used for testing 2 custom world regulatory
82 * domain requests. The first radio will adhere to the first custom world
83 * regulatory domain, the second one to the second custom world regulatory
84 * domain. All other devices will world roam.
85 * @HWSIM_REGTEST_STRICT_FOLLOW_: Used for testing strict regulatory domain
86 * settings, only the first radio will send a regulatory domain request
87 * and use strict settings. The rest of the radios are expected to follow.
88 * @HWSIM_REGTEST_STRICT_ALL: Used for testing strict regulatory domain
89 * settings. All radios will adhere to this.
90 * @HWSIM_REGTEST_STRICT_AND_DRIVER_REG: Used for testing strict regulatory
91 * domain settings, combined with secondary driver regulatory domain
92 * settings. The first radio will get a strict regulatory domain setting
93 * using the first driver regulatory request and the second radio will use
94 * non-strict settings using the second driver regulatory request. All
95 * other devices should follow the intersection created between the
96 * first two.
97 * @HWSIM_REGTEST_ALL: Used for testing every possible mix. You will need
98 * at least 6 radios for a complete test. We will test in this order:
99 * 1 - driver custom world regulatory domain
100 * 2 - second custom world regulatory domain
101 * 3 - first driver regulatory domain request
102 * 4 - second driver regulatory domain request
103 * 5 - strict regulatory domain settings using the third driver regulatory
104 * domain request
105 * 6 and on - should follow the intersection of the 3rd, 4rth and 5th radio
106 * regulatory requests.
107 */
108 enum hwsim_regtest {
109 HWSIM_REGTEST_DISABLED = 0,
110 HWSIM_REGTEST_DRIVER_REG_FOLLOW = 1,
111 HWSIM_REGTEST_DRIVER_REG_ALL = 2,
112 HWSIM_REGTEST_DIFF_COUNTRY = 3,
113 HWSIM_REGTEST_WORLD_ROAM = 4,
114 HWSIM_REGTEST_CUSTOM_WORLD = 5,
115 HWSIM_REGTEST_CUSTOM_WORLD_2 = 6,
116 HWSIM_REGTEST_STRICT_FOLLOW = 7,
117 HWSIM_REGTEST_STRICT_ALL = 8,
118 HWSIM_REGTEST_STRICT_AND_DRIVER_REG = 9,
119 HWSIM_REGTEST_ALL = 10,
120 };
121
122 /* Set to one of the HWSIM_REGTEST_* values above */
123 static int regtest = HWSIM_REGTEST_DISABLED;
124 module_param(regtest, int, 0444);
125 MODULE_PARM_DESC(regtest, "The type of regulatory test we want to run");
126
127 static const char *hwsim_alpha2s[] = {
128 "FI",
129 "AL",
130 "US",
131 "DE",
132 "JP",
133 "AL",
134 };
135
136 static const struct ieee80211_regdomain hwsim_world_regdom_custom_01 = {
137 .n_reg_rules = 4,
138 .alpha2 = "99",
139 .reg_rules = {
140 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
141 REG_RULE(2484-10, 2484+10, 40, 0, 20, 0),
142 REG_RULE(5150-10, 5240+10, 40, 0, 30, 0),
143 REG_RULE(5745-10, 5825+10, 40, 0, 30, 0),
144 }
145 };
146
147 static const struct ieee80211_regdomain hwsim_world_regdom_custom_02 = {
148 .n_reg_rules = 2,
149 .alpha2 = "99",
150 .reg_rules = {
151 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
152 REG_RULE(5725-10, 5850+10, 40, 0, 30,
153 NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS),
154 }
155 };
156
157 struct hwsim_vif_priv {
158 u32 magic;
159 u8 bssid[ETH_ALEN];
160 bool assoc;
161 u16 aid;
162 };
163
164 #define HWSIM_VIF_MAGIC 0x69537748
165
166 static inline void hwsim_check_magic(struct ieee80211_vif *vif)
167 {
168 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
169 WARN_ON(vp->magic != HWSIM_VIF_MAGIC);
170 }
171
172 static inline void hwsim_set_magic(struct ieee80211_vif *vif)
173 {
174 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
175 vp->magic = HWSIM_VIF_MAGIC;
176 }
177
178 static inline void hwsim_clear_magic(struct ieee80211_vif *vif)
179 {
180 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
181 vp->magic = 0;
182 }
183
184 struct hwsim_sta_priv {
185 u32 magic;
186 };
187
188 #define HWSIM_STA_MAGIC 0x6d537748
189
190 static inline void hwsim_check_sta_magic(struct ieee80211_sta *sta)
191 {
192 struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
193 WARN_ON(sp->magic != HWSIM_STA_MAGIC);
194 }
195
196 static inline void hwsim_set_sta_magic(struct ieee80211_sta *sta)
197 {
198 struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
199 sp->magic = HWSIM_STA_MAGIC;
200 }
201
202 static inline void hwsim_clear_sta_magic(struct ieee80211_sta *sta)
203 {
204 struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
205 sp->magic = 0;
206 }
207
208 static struct class *hwsim_class;
209
210 static struct net_device *hwsim_mon; /* global monitor netdev */
211
212 #define CHAN2G(_freq) { \
213 .band = IEEE80211_BAND_2GHZ, \
214 .center_freq = (_freq), \
215 .hw_value = (_freq), \
216 .max_power = 20, \
217 }
218
219 #define CHAN5G(_freq) { \
220 .band = IEEE80211_BAND_5GHZ, \
221 .center_freq = (_freq), \
222 .hw_value = (_freq), \
223 .max_power = 20, \
224 }
225
226 static const struct ieee80211_channel hwsim_channels_2ghz[] = {
227 CHAN2G(2412), /* Channel 1 */
228 CHAN2G(2417), /* Channel 2 */
229 CHAN2G(2422), /* Channel 3 */
230 CHAN2G(2427), /* Channel 4 */
231 CHAN2G(2432), /* Channel 5 */
232 CHAN2G(2437), /* Channel 6 */
233 CHAN2G(2442), /* Channel 7 */
234 CHAN2G(2447), /* Channel 8 */
235 CHAN2G(2452), /* Channel 9 */
236 CHAN2G(2457), /* Channel 10 */
237 CHAN2G(2462), /* Channel 11 */
238 CHAN2G(2467), /* Channel 12 */
239 CHAN2G(2472), /* Channel 13 */
240 CHAN2G(2484), /* Channel 14 */
241 };
242
243 static const struct ieee80211_channel hwsim_channels_5ghz[] = {
244 CHAN5G(5180), /* Channel 36 */
245 CHAN5G(5200), /* Channel 40 */
246 CHAN5G(5220), /* Channel 44 */
247 CHAN5G(5240), /* Channel 48 */
248
249 CHAN5G(5260), /* Channel 52 */
250 CHAN5G(5280), /* Channel 56 */
251 CHAN5G(5300), /* Channel 60 */
252 CHAN5G(5320), /* Channel 64 */
253
254 CHAN5G(5500), /* Channel 100 */
255 CHAN5G(5520), /* Channel 104 */
256 CHAN5G(5540), /* Channel 108 */
257 CHAN5G(5560), /* Channel 112 */
258 CHAN5G(5580), /* Channel 116 */
259 CHAN5G(5600), /* Channel 120 */
260 CHAN5G(5620), /* Channel 124 */
261 CHAN5G(5640), /* Channel 128 */
262 CHAN5G(5660), /* Channel 132 */
263 CHAN5G(5680), /* Channel 136 */
264 CHAN5G(5700), /* Channel 140 */
265
266 CHAN5G(5745), /* Channel 149 */
267 CHAN5G(5765), /* Channel 153 */
268 CHAN5G(5785), /* Channel 157 */
269 CHAN5G(5805), /* Channel 161 */
270 CHAN5G(5825), /* Channel 165 */
271 };
272
273 static const struct ieee80211_rate hwsim_rates[] = {
274 { .bitrate = 10 },
275 { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
276 { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
277 { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
278 { .bitrate = 60 },
279 { .bitrate = 90 },
280 { .bitrate = 120 },
281 { .bitrate = 180 },
282 { .bitrate = 240 },
283 { .bitrate = 360 },
284 { .bitrate = 480 },
285 { .bitrate = 540 }
286 };
287
288 static spinlock_t hwsim_radio_lock;
289 static struct list_head hwsim_radios;
290
291 struct mac80211_hwsim_data {
292 struct list_head list;
293 struct ieee80211_hw *hw;
294 struct device *dev;
295 struct ieee80211_supported_band bands[IEEE80211_NUM_BANDS];
296 struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)];
297 struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)];
298 struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
299
300 struct mac_address addresses[2];
301
302 struct ieee80211_channel *channel;
303 unsigned long beacon_int; /* in jiffies unit */
304 unsigned int rx_filter;
305 bool started, idle, scanning;
306 struct mutex mutex;
307 struct timer_list beacon_timer;
308 enum ps_mode {
309 PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
310 } ps;
311 bool ps_poll_pending;
312 struct dentry *debugfs;
313 struct dentry *debugfs_ps;
314
315 struct sk_buff_head pending; /* packets pending */
316 /*
317 * Only radios in the same group can communicate together (the
318 * channel has to match too). Each bit represents a group. A
319 * radio can be in more then one group.
320 */
321 u64 group;
322 struct dentry *debugfs_group;
323
324 int power_level;
325
326 /* difference between this hw's clock and the real clock, in usecs */
327 u64 tsf_offset;
328 };
329
330
331 struct hwsim_radiotap_hdr {
332 struct ieee80211_radiotap_header hdr;
333 __le64 rt_tsft;
334 u8 rt_flags;
335 u8 rt_rate;
336 __le16 rt_channel;
337 __le16 rt_chbitmask;
338 } __packed;
339
340 /* MAC80211_HWSIM netlinf family */
341 static struct genl_family hwsim_genl_family = {
342 .id = GENL_ID_GENERATE,
343 .hdrsize = 0,
344 .name = "MAC80211_HWSIM",
345 .version = 1,
346 .maxattr = HWSIM_ATTR_MAX,
347 };
348
349 /* MAC80211_HWSIM netlink policy */
350
351 static struct nla_policy hwsim_genl_policy[HWSIM_ATTR_MAX + 1] = {
352 [HWSIM_ATTR_ADDR_RECEIVER] = { .type = NLA_UNSPEC,
353 .len = 6*sizeof(u8) },
354 [HWSIM_ATTR_ADDR_TRANSMITTER] = { .type = NLA_UNSPEC,
355 .len = 6*sizeof(u8) },
356 [HWSIM_ATTR_FRAME] = { .type = NLA_BINARY,
357 .len = IEEE80211_MAX_DATA_LEN },
358 [HWSIM_ATTR_FLAGS] = { .type = NLA_U32 },
359 [HWSIM_ATTR_RX_RATE] = { .type = NLA_U32 },
360 [HWSIM_ATTR_SIGNAL] = { .type = NLA_U32 },
361 [HWSIM_ATTR_TX_INFO] = { .type = NLA_UNSPEC,
362 .len = IEEE80211_TX_MAX_RATES*sizeof(
363 struct hwsim_tx_rate)},
364 [HWSIM_ATTR_COOKIE] = { .type = NLA_U64 },
365 };
366
367 static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
368 struct net_device *dev)
369 {
370 /* TODO: allow packet injection */
371 dev_kfree_skb(skb);
372 return NETDEV_TX_OK;
373 }
374
375 static __le64 __mac80211_hwsim_get_tsf(struct mac80211_hwsim_data *data)
376 {
377 struct timeval tv = ktime_to_timeval(ktime_get_real());
378 u64 now = tv.tv_sec * USEC_PER_SEC + tv.tv_usec;
379 return cpu_to_le64(now + data->tsf_offset);
380 }
381
382 static u64 mac80211_hwsim_get_tsf(struct ieee80211_hw *hw,
383 struct ieee80211_vif *vif)
384 {
385 struct mac80211_hwsim_data *data = hw->priv;
386 return le64_to_cpu(__mac80211_hwsim_get_tsf(data));
387 }
388
389 static void mac80211_hwsim_set_tsf(struct ieee80211_hw *hw,
390 struct ieee80211_vif *vif, u64 tsf)
391 {
392 struct mac80211_hwsim_data *data = hw->priv;
393 struct timeval tv = ktime_to_timeval(ktime_get_real());
394 u64 now = tv.tv_sec * USEC_PER_SEC + tv.tv_usec;
395 data->tsf_offset = tsf - now;
396 }
397
398 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
399 struct sk_buff *tx_skb)
400 {
401 struct mac80211_hwsim_data *data = hw->priv;
402 struct sk_buff *skb;
403 struct hwsim_radiotap_hdr *hdr;
404 u16 flags;
405 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
406 struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
407
408 if (!netif_running(hwsim_mon))
409 return;
410
411 skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
412 if (skb == NULL)
413 return;
414
415 hdr = (struct hwsim_radiotap_hdr *) skb_push(skb, sizeof(*hdr));
416 hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
417 hdr->hdr.it_pad = 0;
418 hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
419 hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
420 (1 << IEEE80211_RADIOTAP_RATE) |
421 (1 << IEEE80211_RADIOTAP_TSFT) |
422 (1 << IEEE80211_RADIOTAP_CHANNEL));
423 hdr->rt_tsft = __mac80211_hwsim_get_tsf(data);
424 hdr->rt_flags = 0;
425 hdr->rt_rate = txrate->bitrate / 5;
426 hdr->rt_channel = cpu_to_le16(data->channel->center_freq);
427 flags = IEEE80211_CHAN_2GHZ;
428 if (txrate->flags & IEEE80211_RATE_ERP_G)
429 flags |= IEEE80211_CHAN_OFDM;
430 else
431 flags |= IEEE80211_CHAN_CCK;
432 hdr->rt_chbitmask = cpu_to_le16(flags);
433
434 skb->dev = hwsim_mon;
435 skb_set_mac_header(skb, 0);
436 skb->ip_summed = CHECKSUM_UNNECESSARY;
437 skb->pkt_type = PACKET_OTHERHOST;
438 skb->protocol = htons(ETH_P_802_2);
439 memset(skb->cb, 0, sizeof(skb->cb));
440 netif_rx(skb);
441 }
442
443
444 static void mac80211_hwsim_monitor_ack(struct ieee80211_hw *hw, const u8 *addr)
445 {
446 struct mac80211_hwsim_data *data = hw->priv;
447 struct sk_buff *skb;
448 struct hwsim_radiotap_hdr *hdr;
449 u16 flags;
450 struct ieee80211_hdr *hdr11;
451
452 if (!netif_running(hwsim_mon))
453 return;
454
455 skb = dev_alloc_skb(100);
456 if (skb == NULL)
457 return;
458
459 hdr = (struct hwsim_radiotap_hdr *) skb_put(skb, sizeof(*hdr));
460 hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
461 hdr->hdr.it_pad = 0;
462 hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
463 hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
464 (1 << IEEE80211_RADIOTAP_CHANNEL));
465 hdr->rt_flags = 0;
466 hdr->rt_rate = 0;
467 hdr->rt_channel = cpu_to_le16(data->channel->center_freq);
468 flags = IEEE80211_CHAN_2GHZ;
469 hdr->rt_chbitmask = cpu_to_le16(flags);
470
471 hdr11 = (struct ieee80211_hdr *) skb_put(skb, 10);
472 hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
473 IEEE80211_STYPE_ACK);
474 hdr11->duration_id = cpu_to_le16(0);
475 memcpy(hdr11->addr1, addr, ETH_ALEN);
476
477 skb->dev = hwsim_mon;
478 skb_set_mac_header(skb, 0);
479 skb->ip_summed = CHECKSUM_UNNECESSARY;
480 skb->pkt_type = PACKET_OTHERHOST;
481 skb->protocol = htons(ETH_P_802_2);
482 memset(skb->cb, 0, sizeof(skb->cb));
483 netif_rx(skb);
484 }
485
486
487 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
488 struct sk_buff *skb)
489 {
490 switch (data->ps) {
491 case PS_DISABLED:
492 return true;
493 case PS_ENABLED:
494 return false;
495 case PS_AUTO_POLL:
496 /* TODO: accept (some) Beacons by default and other frames only
497 * if pending PS-Poll has been sent */
498 return true;
499 case PS_MANUAL_POLL:
500 /* Allow unicast frames to own address if there is a pending
501 * PS-Poll */
502 if (data->ps_poll_pending &&
503 memcmp(data->hw->wiphy->perm_addr, skb->data + 4,
504 ETH_ALEN) == 0) {
505 data->ps_poll_pending = false;
506 return true;
507 }
508 return false;
509 }
510
511 return true;
512 }
513
514
515 struct mac80211_hwsim_addr_match_data {
516 bool ret;
517 const u8 *addr;
518 };
519
520 static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
521 struct ieee80211_vif *vif)
522 {
523 struct mac80211_hwsim_addr_match_data *md = data;
524 if (memcmp(mac, md->addr, ETH_ALEN) == 0)
525 md->ret = true;
526 }
527
528
529 static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
530 const u8 *addr)
531 {
532 struct mac80211_hwsim_addr_match_data md;
533
534 if (memcmp(addr, data->hw->wiphy->perm_addr, ETH_ALEN) == 0)
535 return true;
536
537 md.ret = false;
538 md.addr = addr;
539 ieee80211_iterate_active_interfaces_atomic(data->hw,
540 mac80211_hwsim_addr_iter,
541 &md);
542
543 return md.ret;
544 }
545
546 static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
547 struct sk_buff *my_skb,
548 int dst_pid)
549 {
550 struct sk_buff *skb;
551 struct mac80211_hwsim_data *data = hw->priv;
552 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) my_skb->data;
553 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(my_skb);
554 void *msg_head;
555 unsigned int hwsim_flags = 0;
556 int i;
557 struct hwsim_tx_rate tx_attempts[IEEE80211_TX_MAX_RATES];
558
559 if (data->idle) {
560 wiphy_debug(hw->wiphy, "Trying to TX when idle - reject\n");
561 dev_kfree_skb(my_skb);
562 return;
563 }
564
565 if (data->ps != PS_DISABLED)
566 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
567 /* If the queue contains MAX_QUEUE skb's drop some */
568 if (skb_queue_len(&data->pending) >= MAX_QUEUE) {
569 /* Droping until WARN_QUEUE level */
570 while (skb_queue_len(&data->pending) >= WARN_QUEUE)
571 skb_dequeue(&data->pending);
572 }
573
574 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_ATOMIC);
575 if (skb == NULL)
576 goto nla_put_failure;
577
578 msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
579 HWSIM_CMD_FRAME);
580 if (msg_head == NULL) {
581 printk(KERN_DEBUG "mac80211_hwsim: problem with msg_head\n");
582 goto nla_put_failure;
583 }
584
585 if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
586 sizeof(struct mac_address), data->addresses[1].addr))
587 goto nla_put_failure;
588
589 /* We get the skb->data */
590 if (nla_put(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data))
591 goto nla_put_failure;
592
593 /* We get the flags for this transmission, and we translate them to
594 wmediumd flags */
595
596 if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
597 hwsim_flags |= HWSIM_TX_CTL_REQ_TX_STATUS;
598
599 if (info->flags & IEEE80211_TX_CTL_NO_ACK)
600 hwsim_flags |= HWSIM_TX_CTL_NO_ACK;
601
602 if (nla_put_u32(skb, HWSIM_ATTR_FLAGS, hwsim_flags))
603 goto nla_put_failure;
604
605 /* We get the tx control (rate and retries) info*/
606
607 for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
608 tx_attempts[i].idx = info->status.rates[i].idx;
609 tx_attempts[i].count = info->status.rates[i].count;
610 }
611
612 if (nla_put(skb, HWSIM_ATTR_TX_INFO,
613 sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
614 tx_attempts))
615 goto nla_put_failure;
616
617 /* We create a cookie to identify this skb */
618 if (nla_put_u64(skb, HWSIM_ATTR_COOKIE, (unsigned long) my_skb))
619 goto nla_put_failure;
620
621 genlmsg_end(skb, msg_head);
622 genlmsg_unicast(&init_net, skb, dst_pid);
623
624 /* Enqueue the packet */
625 skb_queue_tail(&data->pending, my_skb);
626 return;
627
628 nla_put_failure:
629 printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
630 }
631
632 static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
633 struct sk_buff *skb)
634 {
635 struct mac80211_hwsim_data *data = hw->priv, *data2;
636 bool ack = false;
637 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
638 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
639 struct ieee80211_rx_status rx_status;
640 struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
641
642 if (data->idle) {
643 wiphy_debug(hw->wiphy, "Trying to TX when idle - reject\n");
644 return false;
645 }
646
647 memset(&rx_status, 0, sizeof(rx_status));
648 rx_status.flag |= RX_FLAG_MACTIME_MPDU;
649 rx_status.freq = data->channel->center_freq;
650 rx_status.band = data->channel->band;
651 rx_status.rate_idx = info->control.rates[0].idx;
652 if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
653 rx_status.flag |= RX_FLAG_HT;
654 if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
655 rx_status.flag |= RX_FLAG_40MHZ;
656 if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
657 rx_status.flag |= RX_FLAG_SHORT_GI;
658 /* TODO: simulate real signal strength (and optional packet loss) */
659 rx_status.signal = data->power_level - 50;
660
661 if (data->ps != PS_DISABLED)
662 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
663
664 /* release the skb's source info */
665 skb_orphan(skb);
666 skb_dst_drop(skb);
667 skb->mark = 0;
668 secpath_reset(skb);
669 nf_reset(skb);
670
671 /* Copy skb to all enabled radios that are on the current frequency */
672 spin_lock(&hwsim_radio_lock);
673 list_for_each_entry(data2, &hwsim_radios, list) {
674 struct sk_buff *nskb;
675 struct ieee80211_mgmt *mgmt;
676
677 if (data == data2)
678 continue;
679
680 if (data2->idle || !data2->started ||
681 !hwsim_ps_rx_ok(data2, skb) || !data2->channel ||
682 data->channel->center_freq != data2->channel->center_freq ||
683 !(data->group & data2->group))
684 continue;
685
686 nskb = skb_copy(skb, GFP_ATOMIC);
687 if (nskb == NULL)
688 continue;
689
690 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
691 ack = true;
692
693 /* set bcn timestamp relative to receiver mactime */
694 rx_status.mactime =
695 le64_to_cpu(__mac80211_hwsim_get_tsf(data2));
696 mgmt = (struct ieee80211_mgmt *) nskb->data;
697 if (ieee80211_is_beacon(mgmt->frame_control) ||
698 ieee80211_is_probe_resp(mgmt->frame_control))
699 mgmt->u.beacon.timestamp = cpu_to_le64(
700 rx_status.mactime +
701 (data->tsf_offset - data2->tsf_offset) +
702 24 * 8 * 10 / txrate->bitrate);
703
704 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
705 ieee80211_rx_irqsafe(data2->hw, nskb);
706 }
707 spin_unlock(&hwsim_radio_lock);
708
709 return ack;
710 }
711
712 static void mac80211_hwsim_tx(struct ieee80211_hw *hw,
713 struct ieee80211_tx_control *control,
714 struct sk_buff *skb)
715 {
716 bool ack;
717 struct ieee80211_tx_info *txi;
718 u32 _pid;
719
720 mac80211_hwsim_monitor_rx(hw, skb);
721
722 if (skb->len < 10) {
723 /* Should not happen; just a sanity check for addr1 use */
724 dev_kfree_skb(skb);
725 return;
726 }
727
728 /* wmediumd mode check */
729 _pid = ACCESS_ONCE(wmediumd_pid);
730
731 if (_pid)
732 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
733
734 /* NO wmediumd detected, perfect medium simulation */
735 ack = mac80211_hwsim_tx_frame_no_nl(hw, skb);
736
737 if (ack && skb->len >= 16) {
738 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
739 mac80211_hwsim_monitor_ack(hw, hdr->addr2);
740 }
741
742 txi = IEEE80211_SKB_CB(skb);
743
744 if (txi->control.vif)
745 hwsim_check_magic(txi->control.vif);
746 if (control->sta)
747 hwsim_check_sta_magic(control->sta);
748
749 ieee80211_tx_info_clear_status(txi);
750
751 /* frame was transmitted at most favorable rate at first attempt */
752 txi->control.rates[0].count = 1;
753 txi->control.rates[1].idx = -1;
754
755 if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
756 txi->flags |= IEEE80211_TX_STAT_ACK;
757 ieee80211_tx_status_irqsafe(hw, skb);
758 }
759
760
761 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
762 {
763 struct mac80211_hwsim_data *data = hw->priv;
764 wiphy_debug(hw->wiphy, "%s\n", __func__);
765 data->started = true;
766 return 0;
767 }
768
769
770 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
771 {
772 struct mac80211_hwsim_data *data = hw->priv;
773 data->started = false;
774 del_timer(&data->beacon_timer);
775 wiphy_debug(hw->wiphy, "%s\n", __func__);
776 }
777
778
779 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
780 struct ieee80211_vif *vif)
781 {
782 wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
783 __func__, ieee80211_vif_type_p2p(vif),
784 vif->addr);
785 hwsim_set_magic(vif);
786 return 0;
787 }
788
789
790 static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
791 struct ieee80211_vif *vif,
792 enum nl80211_iftype newtype,
793 bool newp2p)
794 {
795 newtype = ieee80211_iftype_p2p(newtype, newp2p);
796 wiphy_debug(hw->wiphy,
797 "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
798 __func__, ieee80211_vif_type_p2p(vif),
799 newtype, vif->addr);
800 hwsim_check_magic(vif);
801
802 return 0;
803 }
804
805 static void mac80211_hwsim_remove_interface(
806 struct ieee80211_hw *hw, struct ieee80211_vif *vif)
807 {
808 wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
809 __func__, ieee80211_vif_type_p2p(vif),
810 vif->addr);
811 hwsim_check_magic(vif);
812 hwsim_clear_magic(vif);
813 }
814
815
816 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
817 struct ieee80211_vif *vif)
818 {
819 struct ieee80211_hw *hw = arg;
820 struct sk_buff *skb;
821 struct ieee80211_tx_info *info;
822 u32 _pid;
823
824 hwsim_check_magic(vif);
825
826 if (vif->type != NL80211_IFTYPE_AP &&
827 vif->type != NL80211_IFTYPE_MESH_POINT &&
828 vif->type != NL80211_IFTYPE_ADHOC)
829 return;
830
831 skb = ieee80211_beacon_get(hw, vif);
832 if (skb == NULL)
833 return;
834 info = IEEE80211_SKB_CB(skb);
835
836 mac80211_hwsim_monitor_rx(hw, skb);
837
838 /* wmediumd mode check */
839 _pid = ACCESS_ONCE(wmediumd_pid);
840
841 if (_pid)
842 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
843
844 mac80211_hwsim_tx_frame_no_nl(hw, skb);
845 dev_kfree_skb(skb);
846 }
847
848
849 static void mac80211_hwsim_beacon(unsigned long arg)
850 {
851 struct ieee80211_hw *hw = (struct ieee80211_hw *) arg;
852 struct mac80211_hwsim_data *data = hw->priv;
853
854 if (!data->started)
855 return;
856
857 ieee80211_iterate_active_interfaces_atomic(
858 hw, mac80211_hwsim_beacon_tx, hw);
859
860 data->beacon_timer.expires = jiffies + data->beacon_int;
861 add_timer(&data->beacon_timer);
862 }
863
864 static const char *hwsim_chantypes[] = {
865 [NL80211_CHAN_NO_HT] = "noht",
866 [NL80211_CHAN_HT20] = "ht20",
867 [NL80211_CHAN_HT40MINUS] = "ht40-",
868 [NL80211_CHAN_HT40PLUS] = "ht40+",
869 };
870
871 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
872 {
873 struct mac80211_hwsim_data *data = hw->priv;
874 struct ieee80211_conf *conf = &hw->conf;
875 static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
876 [IEEE80211_SMPS_AUTOMATIC] = "auto",
877 [IEEE80211_SMPS_OFF] = "off",
878 [IEEE80211_SMPS_STATIC] = "static",
879 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
880 };
881
882 wiphy_debug(hw->wiphy,
883 "%s (freq=%d/%s idle=%d ps=%d smps=%s)\n",
884 __func__,
885 conf->channel->center_freq,
886 hwsim_chantypes[conf->channel_type],
887 !!(conf->flags & IEEE80211_CONF_IDLE),
888 !!(conf->flags & IEEE80211_CONF_PS),
889 smps_modes[conf->smps_mode]);
890
891 data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
892
893 data->channel = conf->channel;
894 data->power_level = conf->power_level;
895 if (!data->started || !data->beacon_int)
896 del_timer(&data->beacon_timer);
897 else
898 mod_timer(&data->beacon_timer, jiffies + data->beacon_int);
899
900 return 0;
901 }
902
903
904 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
905 unsigned int changed_flags,
906 unsigned int *total_flags,u64 multicast)
907 {
908 struct mac80211_hwsim_data *data = hw->priv;
909
910 wiphy_debug(hw->wiphy, "%s\n", __func__);
911
912 data->rx_filter = 0;
913 if (*total_flags & FIF_PROMISC_IN_BSS)
914 data->rx_filter |= FIF_PROMISC_IN_BSS;
915 if (*total_flags & FIF_ALLMULTI)
916 data->rx_filter |= FIF_ALLMULTI;
917
918 *total_flags = data->rx_filter;
919 }
920
921 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
922 struct ieee80211_vif *vif,
923 struct ieee80211_bss_conf *info,
924 u32 changed)
925 {
926 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
927 struct mac80211_hwsim_data *data = hw->priv;
928
929 hwsim_check_magic(vif);
930
931 wiphy_debug(hw->wiphy, "%s(changed=0x%x)\n", __func__, changed);
932
933 if (changed & BSS_CHANGED_BSSID) {
934 wiphy_debug(hw->wiphy, "%s: BSSID changed: %pM\n",
935 __func__, info->bssid);
936 memcpy(vp->bssid, info->bssid, ETH_ALEN);
937 }
938
939 if (changed & BSS_CHANGED_ASSOC) {
940 wiphy_debug(hw->wiphy, " ASSOC: assoc=%d aid=%d\n",
941 info->assoc, info->aid);
942 vp->assoc = info->assoc;
943 vp->aid = info->aid;
944 }
945
946 if (changed & BSS_CHANGED_BEACON_INT) {
947 wiphy_debug(hw->wiphy, " BCNINT: %d\n", info->beacon_int);
948 data->beacon_int = 1024 * info->beacon_int / 1000 * HZ / 1000;
949 if (WARN_ON(!data->beacon_int))
950 data->beacon_int = 1;
951 if (data->started)
952 mod_timer(&data->beacon_timer,
953 jiffies + data->beacon_int);
954 }
955
956 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
957 wiphy_debug(hw->wiphy, " ERP_CTS_PROT: %d\n",
958 info->use_cts_prot);
959 }
960
961 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
962 wiphy_debug(hw->wiphy, " ERP_PREAMBLE: %d\n",
963 info->use_short_preamble);
964 }
965
966 if (changed & BSS_CHANGED_ERP_SLOT) {
967 wiphy_debug(hw->wiphy, " ERP_SLOT: %d\n", info->use_short_slot);
968 }
969
970 if (changed & BSS_CHANGED_HT) {
971 wiphy_debug(hw->wiphy, " HT: op_mode=0x%x, chantype=%s\n",
972 info->ht_operation_mode,
973 hwsim_chantypes[info->channel_type]);
974 }
975
976 if (changed & BSS_CHANGED_BASIC_RATES) {
977 wiphy_debug(hw->wiphy, " BASIC_RATES: 0x%llx\n",
978 (unsigned long long) info->basic_rates);
979 }
980 }
981
982 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
983 struct ieee80211_vif *vif,
984 struct ieee80211_sta *sta)
985 {
986 hwsim_check_magic(vif);
987 hwsim_set_sta_magic(sta);
988
989 return 0;
990 }
991
992 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
993 struct ieee80211_vif *vif,
994 struct ieee80211_sta *sta)
995 {
996 hwsim_check_magic(vif);
997 hwsim_clear_sta_magic(sta);
998
999 return 0;
1000 }
1001
1002 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
1003 struct ieee80211_vif *vif,
1004 enum sta_notify_cmd cmd,
1005 struct ieee80211_sta *sta)
1006 {
1007 hwsim_check_magic(vif);
1008
1009 switch (cmd) {
1010 case STA_NOTIFY_SLEEP:
1011 case STA_NOTIFY_AWAKE:
1012 /* TODO: make good use of these flags */
1013 break;
1014 default:
1015 WARN(1, "Invalid sta notify: %d\n", cmd);
1016 break;
1017 }
1018 }
1019
1020 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
1021 struct ieee80211_sta *sta,
1022 bool set)
1023 {
1024 hwsim_check_sta_magic(sta);
1025 return 0;
1026 }
1027
1028 static int mac80211_hwsim_conf_tx(
1029 struct ieee80211_hw *hw,
1030 struct ieee80211_vif *vif, u16 queue,
1031 const struct ieee80211_tx_queue_params *params)
1032 {
1033 wiphy_debug(hw->wiphy,
1034 "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
1035 __func__, queue,
1036 params->txop, params->cw_min,
1037 params->cw_max, params->aifs);
1038 return 0;
1039 }
1040
1041 static int mac80211_hwsim_get_survey(
1042 struct ieee80211_hw *hw, int idx,
1043 struct survey_info *survey)
1044 {
1045 struct ieee80211_conf *conf = &hw->conf;
1046
1047 wiphy_debug(hw->wiphy, "%s (idx=%d)\n", __func__, idx);
1048
1049 if (idx != 0)
1050 return -ENOENT;
1051
1052 /* Current channel */
1053 survey->channel = conf->channel;
1054
1055 /*
1056 * Magically conjured noise level --- this is only ok for simulated hardware.
1057 *
1058 * A real driver which cannot determine the real channel noise MUST NOT
1059 * report any noise, especially not a magically conjured one :-)
1060 */
1061 survey->filled = SURVEY_INFO_NOISE_DBM;
1062 survey->noise = -92;
1063
1064 return 0;
1065 }
1066
1067 #ifdef CONFIG_NL80211_TESTMODE
1068 /*
1069 * This section contains example code for using netlink
1070 * attributes with the testmode command in nl80211.
1071 */
1072
1073 /* These enums need to be kept in sync with userspace */
1074 enum hwsim_testmode_attr {
1075 __HWSIM_TM_ATTR_INVALID = 0,
1076 HWSIM_TM_ATTR_CMD = 1,
1077 HWSIM_TM_ATTR_PS = 2,
1078
1079 /* keep last */
1080 __HWSIM_TM_ATTR_AFTER_LAST,
1081 HWSIM_TM_ATTR_MAX = __HWSIM_TM_ATTR_AFTER_LAST - 1
1082 };
1083
1084 enum hwsim_testmode_cmd {
1085 HWSIM_TM_CMD_SET_PS = 0,
1086 HWSIM_TM_CMD_GET_PS = 1,
1087 HWSIM_TM_CMD_STOP_QUEUES = 2,
1088 HWSIM_TM_CMD_WAKE_QUEUES = 3,
1089 };
1090
1091 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
1092 [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
1093 [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
1094 };
1095
1096 static int hwsim_fops_ps_write(void *dat, u64 val);
1097
1098 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
1099 void *data, int len)
1100 {
1101 struct mac80211_hwsim_data *hwsim = hw->priv;
1102 struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
1103 struct sk_buff *skb;
1104 int err, ps;
1105
1106 err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
1107 hwsim_testmode_policy);
1108 if (err)
1109 return err;
1110
1111 if (!tb[HWSIM_TM_ATTR_CMD])
1112 return -EINVAL;
1113
1114 switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
1115 case HWSIM_TM_CMD_SET_PS:
1116 if (!tb[HWSIM_TM_ATTR_PS])
1117 return -EINVAL;
1118 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
1119 return hwsim_fops_ps_write(hwsim, ps);
1120 case HWSIM_TM_CMD_GET_PS:
1121 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
1122 nla_total_size(sizeof(u32)));
1123 if (!skb)
1124 return -ENOMEM;
1125 if (nla_put_u32(skb, HWSIM_TM_ATTR_PS, hwsim->ps))
1126 goto nla_put_failure;
1127 return cfg80211_testmode_reply(skb);
1128 case HWSIM_TM_CMD_STOP_QUEUES:
1129 ieee80211_stop_queues(hw);
1130 return 0;
1131 case HWSIM_TM_CMD_WAKE_QUEUES:
1132 ieee80211_wake_queues(hw);
1133 return 0;
1134 default:
1135 return -EOPNOTSUPP;
1136 }
1137
1138 nla_put_failure:
1139 kfree_skb(skb);
1140 return -ENOBUFS;
1141 }
1142 #endif
1143
1144 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
1145 struct ieee80211_vif *vif,
1146 enum ieee80211_ampdu_mlme_action action,
1147 struct ieee80211_sta *sta, u16 tid, u16 *ssn,
1148 u8 buf_size)
1149 {
1150 switch (action) {
1151 case IEEE80211_AMPDU_TX_START:
1152 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1153 break;
1154 case IEEE80211_AMPDU_TX_STOP:
1155 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1156 break;
1157 case IEEE80211_AMPDU_TX_OPERATIONAL:
1158 break;
1159 case IEEE80211_AMPDU_RX_START:
1160 case IEEE80211_AMPDU_RX_STOP:
1161 break;
1162 default:
1163 return -EOPNOTSUPP;
1164 }
1165
1166 return 0;
1167 }
1168
1169 static void mac80211_hwsim_flush(struct ieee80211_hw *hw, bool drop)
1170 {
1171 /* Not implemented, queues only on kernel side */
1172 }
1173
1174 struct hw_scan_done {
1175 struct delayed_work w;
1176 struct ieee80211_hw *hw;
1177 };
1178
1179 static void hw_scan_done(struct work_struct *work)
1180 {
1181 struct hw_scan_done *hsd =
1182 container_of(work, struct hw_scan_done, w.work);
1183
1184 ieee80211_scan_completed(hsd->hw, false);
1185 kfree(hsd);
1186 }
1187
1188 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
1189 struct ieee80211_vif *vif,
1190 struct cfg80211_scan_request *req)
1191 {
1192 struct hw_scan_done *hsd = kzalloc(sizeof(*hsd), GFP_KERNEL);
1193 int i;
1194
1195 if (!hsd)
1196 return -ENOMEM;
1197
1198 hsd->hw = hw;
1199 INIT_DELAYED_WORK(&hsd->w, hw_scan_done);
1200
1201 printk(KERN_DEBUG "hwsim hw_scan request\n");
1202 for (i = 0; i < req->n_channels; i++)
1203 printk(KERN_DEBUG "hwsim hw_scan freq %d\n",
1204 req->channels[i]->center_freq);
1205 print_hex_dump(KERN_DEBUG, "scan IEs: ", DUMP_PREFIX_OFFSET,
1206 16, 1, req->ie, req->ie_len, 1);
1207
1208 ieee80211_queue_delayed_work(hw, &hsd->w, 2 * HZ);
1209
1210 return 0;
1211 }
1212
1213 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw)
1214 {
1215 struct mac80211_hwsim_data *hwsim = hw->priv;
1216
1217 mutex_lock(&hwsim->mutex);
1218
1219 if (hwsim->scanning) {
1220 printk(KERN_DEBUG "two hwsim sw_scans detected!\n");
1221 goto out;
1222 }
1223
1224 printk(KERN_DEBUG "hwsim sw_scan request, prepping stuff\n");
1225 hwsim->scanning = true;
1226
1227 out:
1228 mutex_unlock(&hwsim->mutex);
1229 }
1230
1231 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw)
1232 {
1233 struct mac80211_hwsim_data *hwsim = hw->priv;
1234
1235 mutex_lock(&hwsim->mutex);
1236
1237 printk(KERN_DEBUG "hwsim sw_scan_complete\n");
1238 hwsim->scanning = false;
1239
1240 mutex_unlock(&hwsim->mutex);
1241 }
1242
1243 static struct ieee80211_ops mac80211_hwsim_ops =
1244 {
1245 .tx = mac80211_hwsim_tx,
1246 .start = mac80211_hwsim_start,
1247 .stop = mac80211_hwsim_stop,
1248 .add_interface = mac80211_hwsim_add_interface,
1249 .change_interface = mac80211_hwsim_change_interface,
1250 .remove_interface = mac80211_hwsim_remove_interface,
1251 .config = mac80211_hwsim_config,
1252 .configure_filter = mac80211_hwsim_configure_filter,
1253 .bss_info_changed = mac80211_hwsim_bss_info_changed,
1254 .sta_add = mac80211_hwsim_sta_add,
1255 .sta_remove = mac80211_hwsim_sta_remove,
1256 .sta_notify = mac80211_hwsim_sta_notify,
1257 .set_tim = mac80211_hwsim_set_tim,
1258 .conf_tx = mac80211_hwsim_conf_tx,
1259 .get_survey = mac80211_hwsim_get_survey,
1260 CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)
1261 .ampdu_action = mac80211_hwsim_ampdu_action,
1262 .sw_scan_start = mac80211_hwsim_sw_scan,
1263 .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
1264 .flush = mac80211_hwsim_flush,
1265 .get_tsf = mac80211_hwsim_get_tsf,
1266 .set_tsf = mac80211_hwsim_set_tsf,
1267 };
1268
1269
1270 static void mac80211_hwsim_free(void)
1271 {
1272 struct list_head tmplist, *i, *tmp;
1273 struct mac80211_hwsim_data *data, *tmpdata;
1274
1275 INIT_LIST_HEAD(&tmplist);
1276
1277 spin_lock_bh(&hwsim_radio_lock);
1278 list_for_each_safe(i, tmp, &hwsim_radios)
1279 list_move(i, &tmplist);
1280 spin_unlock_bh(&hwsim_radio_lock);
1281
1282 list_for_each_entry_safe(data, tmpdata, &tmplist, list) {
1283 debugfs_remove(data->debugfs_group);
1284 debugfs_remove(data->debugfs_ps);
1285 debugfs_remove(data->debugfs);
1286 ieee80211_unregister_hw(data->hw);
1287 device_unregister(data->dev);
1288 ieee80211_free_hw(data->hw);
1289 }
1290 class_destroy(hwsim_class);
1291 }
1292
1293
1294 static struct device_driver mac80211_hwsim_driver = {
1295 .name = "mac80211_hwsim"
1296 };
1297
1298 static const struct net_device_ops hwsim_netdev_ops = {
1299 .ndo_start_xmit = hwsim_mon_xmit,
1300 .ndo_change_mtu = eth_change_mtu,
1301 .ndo_set_mac_address = eth_mac_addr,
1302 .ndo_validate_addr = eth_validate_addr,
1303 };
1304
1305 static void hwsim_mon_setup(struct net_device *dev)
1306 {
1307 dev->netdev_ops = &hwsim_netdev_ops;
1308 dev->destructor = free_netdev;
1309 ether_setup(dev);
1310 dev->tx_queue_len = 0;
1311 dev->type = ARPHRD_IEEE80211_RADIOTAP;
1312 memset(dev->dev_addr, 0, ETH_ALEN);
1313 dev->dev_addr[0] = 0x12;
1314 }
1315
1316
1317 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
1318 {
1319 struct mac80211_hwsim_data *data = dat;
1320 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1321 struct sk_buff *skb;
1322 struct ieee80211_pspoll *pspoll;
1323 u32 _pid;
1324
1325 if (!vp->assoc)
1326 return;
1327
1328 wiphy_debug(data->hw->wiphy,
1329 "%s: send PS-Poll to %pM for aid %d\n",
1330 __func__, vp->bssid, vp->aid);
1331
1332 skb = dev_alloc_skb(sizeof(*pspoll));
1333 if (!skb)
1334 return;
1335 pspoll = (void *) skb_put(skb, sizeof(*pspoll));
1336 pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
1337 IEEE80211_STYPE_PSPOLL |
1338 IEEE80211_FCTL_PM);
1339 pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
1340 memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
1341 memcpy(pspoll->ta, mac, ETH_ALEN);
1342
1343 /* wmediumd mode check */
1344 _pid = ACCESS_ONCE(wmediumd_pid);
1345
1346 if (_pid)
1347 return mac80211_hwsim_tx_frame_nl(data->hw, skb, _pid);
1348
1349 if (!mac80211_hwsim_tx_frame_no_nl(data->hw, skb))
1350 printk(KERN_DEBUG "%s: PS-poll frame not ack'ed\n", __func__);
1351 dev_kfree_skb(skb);
1352 }
1353
1354
1355 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
1356 struct ieee80211_vif *vif, int ps)
1357 {
1358 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1359 struct sk_buff *skb;
1360 struct ieee80211_hdr *hdr;
1361 u32 _pid;
1362
1363 if (!vp->assoc)
1364 return;
1365
1366 wiphy_debug(data->hw->wiphy,
1367 "%s: send data::nullfunc to %pM ps=%d\n",
1368 __func__, vp->bssid, ps);
1369
1370 skb = dev_alloc_skb(sizeof(*hdr));
1371 if (!skb)
1372 return;
1373 hdr = (void *) skb_put(skb, sizeof(*hdr) - ETH_ALEN);
1374 hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
1375 IEEE80211_STYPE_NULLFUNC |
1376 (ps ? IEEE80211_FCTL_PM : 0));
1377 hdr->duration_id = cpu_to_le16(0);
1378 memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
1379 memcpy(hdr->addr2, mac, ETH_ALEN);
1380 memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
1381
1382 /* wmediumd mode check */
1383 _pid = ACCESS_ONCE(wmediumd_pid);
1384
1385 if (_pid)
1386 return mac80211_hwsim_tx_frame_nl(data->hw, skb, _pid);
1387
1388 if (!mac80211_hwsim_tx_frame_no_nl(data->hw, skb))
1389 printk(KERN_DEBUG "%s: nullfunc frame not ack'ed\n", __func__);
1390 dev_kfree_skb(skb);
1391 }
1392
1393
1394 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
1395 struct ieee80211_vif *vif)
1396 {
1397 struct mac80211_hwsim_data *data = dat;
1398 hwsim_send_nullfunc(data, mac, vif, 1);
1399 }
1400
1401
1402 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
1403 struct ieee80211_vif *vif)
1404 {
1405 struct mac80211_hwsim_data *data = dat;
1406 hwsim_send_nullfunc(data, mac, vif, 0);
1407 }
1408
1409
1410 static int hwsim_fops_ps_read(void *dat, u64 *val)
1411 {
1412 struct mac80211_hwsim_data *data = dat;
1413 *val = data->ps;
1414 return 0;
1415 }
1416
1417 static int hwsim_fops_ps_write(void *dat, u64 val)
1418 {
1419 struct mac80211_hwsim_data *data = dat;
1420 enum ps_mode old_ps;
1421
1422 if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
1423 val != PS_MANUAL_POLL)
1424 return -EINVAL;
1425
1426 old_ps = data->ps;
1427 data->ps = val;
1428
1429 if (val == PS_MANUAL_POLL) {
1430 ieee80211_iterate_active_interfaces(data->hw,
1431 hwsim_send_ps_poll, data);
1432 data->ps_poll_pending = true;
1433 } else if (old_ps == PS_DISABLED && val != PS_DISABLED) {
1434 ieee80211_iterate_active_interfaces(data->hw,
1435 hwsim_send_nullfunc_ps,
1436 data);
1437 } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
1438 ieee80211_iterate_active_interfaces(data->hw,
1439 hwsim_send_nullfunc_no_ps,
1440 data);
1441 }
1442
1443 return 0;
1444 }
1445
1446 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
1447 "%llu\n");
1448
1449
1450 static int hwsim_fops_group_read(void *dat, u64 *val)
1451 {
1452 struct mac80211_hwsim_data *data = dat;
1453 *val = data->group;
1454 return 0;
1455 }
1456
1457 static int hwsim_fops_group_write(void *dat, u64 val)
1458 {
1459 struct mac80211_hwsim_data *data = dat;
1460 data->group = val;
1461 return 0;
1462 }
1463
1464 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
1465 hwsim_fops_group_read, hwsim_fops_group_write,
1466 "%llx\n");
1467
1468 static struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(
1469 struct mac_address *addr)
1470 {
1471 struct mac80211_hwsim_data *data;
1472 bool _found = false;
1473
1474 spin_lock_bh(&hwsim_radio_lock);
1475 list_for_each_entry(data, &hwsim_radios, list) {
1476 if (memcmp(data->addresses[1].addr, addr,
1477 sizeof(struct mac_address)) == 0) {
1478 _found = true;
1479 break;
1480 }
1481 }
1482 spin_unlock_bh(&hwsim_radio_lock);
1483
1484 if (!_found)
1485 return NULL;
1486
1487 return data;
1488 }
1489
1490 static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
1491 struct genl_info *info)
1492 {
1493
1494 struct ieee80211_hdr *hdr;
1495 struct mac80211_hwsim_data *data2;
1496 struct ieee80211_tx_info *txi;
1497 struct hwsim_tx_rate *tx_attempts;
1498 unsigned long ret_skb_ptr;
1499 struct sk_buff *skb, *tmp;
1500 struct mac_address *src;
1501 unsigned int hwsim_flags;
1502
1503 int i;
1504 bool found = false;
1505
1506 if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
1507 !info->attrs[HWSIM_ATTR_FLAGS] ||
1508 !info->attrs[HWSIM_ATTR_COOKIE] ||
1509 !info->attrs[HWSIM_ATTR_TX_INFO])
1510 goto out;
1511
1512 src = (struct mac_address *)nla_data(
1513 info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
1514 hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
1515
1516 ret_skb_ptr = nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
1517
1518 data2 = get_hwsim_data_ref_from_addr(src);
1519
1520 if (data2 == NULL)
1521 goto out;
1522
1523 /* look for the skb matching the cookie passed back from user */
1524 skb_queue_walk_safe(&data2->pending, skb, tmp) {
1525 if ((unsigned long)skb == ret_skb_ptr) {
1526 skb_unlink(skb, &data2->pending);
1527 found = true;
1528 break;
1529 }
1530 }
1531
1532 /* not found */
1533 if (!found)
1534 goto out;
1535
1536 /* Tx info received because the frame was broadcasted on user space,
1537 so we get all the necessary info: tx attempts and skb control buff */
1538
1539 tx_attempts = (struct hwsim_tx_rate *)nla_data(
1540 info->attrs[HWSIM_ATTR_TX_INFO]);
1541
1542 /* now send back TX status */
1543 txi = IEEE80211_SKB_CB(skb);
1544
1545 ieee80211_tx_info_clear_status(txi);
1546
1547 for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
1548 txi->status.rates[i].idx = tx_attempts[i].idx;
1549 txi->status.rates[i].count = tx_attempts[i].count;
1550 /*txi->status.rates[i].flags = 0;*/
1551 }
1552
1553 txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
1554
1555 if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
1556 (hwsim_flags & HWSIM_TX_STAT_ACK)) {
1557 if (skb->len >= 16) {
1558 hdr = (struct ieee80211_hdr *) skb->data;
1559 mac80211_hwsim_monitor_ack(data2->hw, hdr->addr2);
1560 }
1561 txi->flags |= IEEE80211_TX_STAT_ACK;
1562 }
1563 ieee80211_tx_status_irqsafe(data2->hw, skb);
1564 return 0;
1565 out:
1566 return -EINVAL;
1567
1568 }
1569
1570 static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
1571 struct genl_info *info)
1572 {
1573
1574 struct mac80211_hwsim_data *data2;
1575 struct ieee80211_rx_status rx_status;
1576 struct mac_address *dst;
1577 int frame_data_len;
1578 char *frame_data;
1579 struct sk_buff *skb = NULL;
1580
1581 if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
1582 !info->attrs[HWSIM_ATTR_FRAME] ||
1583 !info->attrs[HWSIM_ATTR_RX_RATE] ||
1584 !info->attrs[HWSIM_ATTR_SIGNAL])
1585 goto out;
1586
1587 dst = (struct mac_address *)nla_data(
1588 info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
1589
1590 frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
1591 frame_data = (char *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
1592
1593 /* Allocate new skb here */
1594 skb = alloc_skb(frame_data_len, GFP_KERNEL);
1595 if (skb == NULL)
1596 goto err;
1597
1598 if (frame_data_len <= IEEE80211_MAX_DATA_LEN) {
1599 /* Copy the data */
1600 memcpy(skb_put(skb, frame_data_len), frame_data,
1601 frame_data_len);
1602 } else
1603 goto err;
1604
1605 data2 = get_hwsim_data_ref_from_addr(dst);
1606
1607 if (data2 == NULL)
1608 goto out;
1609
1610 /* check if radio is configured properly */
1611
1612 if (data2->idle || !data2->started || !data2->channel)
1613 goto out;
1614
1615 /*A frame is received from user space*/
1616 memset(&rx_status, 0, sizeof(rx_status));
1617 rx_status.freq = data2->channel->center_freq;
1618 rx_status.band = data2->channel->band;
1619 rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
1620 rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
1621
1622 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
1623 ieee80211_rx_irqsafe(data2->hw, skb);
1624
1625 return 0;
1626 err:
1627 printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
1628 goto out;
1629 out:
1630 dev_kfree_skb(skb);
1631 return -EINVAL;
1632 }
1633
1634 static int hwsim_register_received_nl(struct sk_buff *skb_2,
1635 struct genl_info *info)
1636 {
1637 if (info == NULL)
1638 goto out;
1639
1640 wmediumd_pid = info->snd_pid;
1641
1642 printk(KERN_DEBUG "mac80211_hwsim: received a REGISTER, "
1643 "switching to wmediumd mode with pid %d\n", info->snd_pid);
1644
1645 return 0;
1646 out:
1647 printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
1648 return -EINVAL;
1649 }
1650
1651 /* Generic Netlink operations array */
1652 static struct genl_ops hwsim_ops[] = {
1653 {
1654 .cmd = HWSIM_CMD_REGISTER,
1655 .policy = hwsim_genl_policy,
1656 .doit = hwsim_register_received_nl,
1657 .flags = GENL_ADMIN_PERM,
1658 },
1659 {
1660 .cmd = HWSIM_CMD_FRAME,
1661 .policy = hwsim_genl_policy,
1662 .doit = hwsim_cloned_frame_received_nl,
1663 },
1664 {
1665 .cmd = HWSIM_CMD_TX_INFO_FRAME,
1666 .policy = hwsim_genl_policy,
1667 .doit = hwsim_tx_info_frame_received_nl,
1668 },
1669 };
1670
1671 static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
1672 unsigned long state,
1673 void *_notify)
1674 {
1675 struct netlink_notify *notify = _notify;
1676
1677 if (state != NETLINK_URELEASE)
1678 return NOTIFY_DONE;
1679
1680 if (notify->pid == wmediumd_pid) {
1681 printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
1682 " socket, switching to perfect channel medium\n");
1683 wmediumd_pid = 0;
1684 }
1685 return NOTIFY_DONE;
1686
1687 }
1688
1689 static struct notifier_block hwsim_netlink_notifier = {
1690 .notifier_call = mac80211_hwsim_netlink_notify,
1691 };
1692
1693 static int hwsim_init_netlink(void)
1694 {
1695 int rc;
1696 printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
1697
1698 rc = genl_register_family_with_ops(&hwsim_genl_family,
1699 hwsim_ops, ARRAY_SIZE(hwsim_ops));
1700 if (rc)
1701 goto failure;
1702
1703 rc = netlink_register_notifier(&hwsim_netlink_notifier);
1704 if (rc)
1705 goto failure;
1706
1707 return 0;
1708
1709 failure:
1710 printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
1711 return -EINVAL;
1712 }
1713
1714 static void hwsim_exit_netlink(void)
1715 {
1716 int ret;
1717
1718 printk(KERN_INFO "mac80211_hwsim: closing netlink\n");
1719 /* unregister the notifier */
1720 netlink_unregister_notifier(&hwsim_netlink_notifier);
1721 /* unregister the family */
1722 ret = genl_unregister_family(&hwsim_genl_family);
1723 if (ret)
1724 printk(KERN_DEBUG "mac80211_hwsim: "
1725 "unregister family %i\n", ret);
1726 }
1727
1728 static const struct ieee80211_iface_limit hwsim_if_limits[] = {
1729 { .max = 1, .types = BIT(NL80211_IFTYPE_ADHOC) },
1730 { .max = 2048, .types = BIT(NL80211_IFTYPE_STATION) |
1731 BIT(NL80211_IFTYPE_P2P_CLIENT) |
1732 #ifdef CONFIG_MAC80211_MESH
1733 BIT(NL80211_IFTYPE_MESH_POINT) |
1734 #endif
1735 BIT(NL80211_IFTYPE_AP) |
1736 BIT(NL80211_IFTYPE_P2P_GO) },
1737 { .max = 1, .types = BIT(NL80211_IFTYPE_P2P_DEVICE) },
1738 };
1739
1740 static const struct ieee80211_iface_combination hwsim_if_comb = {
1741 .limits = hwsim_if_limits,
1742 .n_limits = ARRAY_SIZE(hwsim_if_limits),
1743 .max_interfaces = 2048,
1744 .num_different_channels = 1,
1745 };
1746
1747 static int __init init_mac80211_hwsim(void)
1748 {
1749 int i, err = 0;
1750 u8 addr[ETH_ALEN];
1751 struct mac80211_hwsim_data *data;
1752 struct ieee80211_hw *hw;
1753 enum ieee80211_band band;
1754
1755 if (radios < 1 || radios > 100)
1756 return -EINVAL;
1757
1758 if (fake_hw_scan) {
1759 mac80211_hwsim_ops.hw_scan = mac80211_hwsim_hw_scan;
1760 mac80211_hwsim_ops.sw_scan_start = NULL;
1761 mac80211_hwsim_ops.sw_scan_complete = NULL;
1762 }
1763
1764 spin_lock_init(&hwsim_radio_lock);
1765 INIT_LIST_HEAD(&hwsim_radios);
1766
1767 hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
1768 if (IS_ERR(hwsim_class))
1769 return PTR_ERR(hwsim_class);
1770
1771 memset(addr, 0, ETH_ALEN);
1772 addr[0] = 0x02;
1773
1774 for (i = 0; i < radios; i++) {
1775 printk(KERN_DEBUG "mac80211_hwsim: Initializing radio %d\n",
1776 i);
1777 hw = ieee80211_alloc_hw(sizeof(*data), &mac80211_hwsim_ops);
1778 if (!hw) {
1779 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw "
1780 "failed\n");
1781 err = -ENOMEM;
1782 goto failed;
1783 }
1784 data = hw->priv;
1785 data->hw = hw;
1786
1787 data->dev = device_create(hwsim_class, NULL, 0, hw,
1788 "hwsim%d", i);
1789 if (IS_ERR(data->dev)) {
1790 printk(KERN_DEBUG
1791 "mac80211_hwsim: device_create "
1792 "failed (%ld)\n", PTR_ERR(data->dev));
1793 err = -ENOMEM;
1794 goto failed_drvdata;
1795 }
1796 data->dev->driver = &mac80211_hwsim_driver;
1797 skb_queue_head_init(&data->pending);
1798
1799 SET_IEEE80211_DEV(hw, data->dev);
1800 addr[3] = i >> 8;
1801 addr[4] = i;
1802 memcpy(data->addresses[0].addr, addr, ETH_ALEN);
1803 memcpy(data->addresses[1].addr, addr, ETH_ALEN);
1804 data->addresses[1].addr[0] |= 0x40;
1805 hw->wiphy->n_addresses = 2;
1806 hw->wiphy->addresses = data->addresses;
1807
1808 hw->wiphy->iface_combinations = &hwsim_if_comb;
1809 hw->wiphy->n_iface_combinations = 1;
1810
1811 if (fake_hw_scan) {
1812 hw->wiphy->max_scan_ssids = 255;
1813 hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
1814 }
1815
1816 hw->channel_change_time = 1;
1817 hw->queues = 4;
1818 hw->wiphy->interface_modes =
1819 BIT(NL80211_IFTYPE_STATION) |
1820 BIT(NL80211_IFTYPE_AP) |
1821 BIT(NL80211_IFTYPE_P2P_CLIENT) |
1822 BIT(NL80211_IFTYPE_P2P_GO) |
1823 BIT(NL80211_IFTYPE_ADHOC) |
1824 BIT(NL80211_IFTYPE_MESH_POINT) |
1825 BIT(NL80211_IFTYPE_P2P_DEVICE);
1826
1827 hw->flags = IEEE80211_HW_MFP_CAPABLE |
1828 IEEE80211_HW_SIGNAL_DBM |
1829 IEEE80211_HW_SUPPORTS_STATIC_SMPS |
1830 IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
1831 IEEE80211_HW_AMPDU_AGGREGATION |
1832 IEEE80211_HW_WANT_MONITOR_VIF;
1833
1834 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS |
1835 WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL;
1836
1837 /* ask mac80211 to reserve space for magic */
1838 hw->vif_data_size = sizeof(struct hwsim_vif_priv);
1839 hw->sta_data_size = sizeof(struct hwsim_sta_priv);
1840
1841 memcpy(data->channels_2ghz, hwsim_channels_2ghz,
1842 sizeof(hwsim_channels_2ghz));
1843 memcpy(data->channels_5ghz, hwsim_channels_5ghz,
1844 sizeof(hwsim_channels_5ghz));
1845 memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
1846
1847 for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) {
1848 struct ieee80211_supported_band *sband = &data->bands[band];
1849 switch (band) {
1850 case IEEE80211_BAND_2GHZ:
1851 sband->channels = data->channels_2ghz;
1852 sband->n_channels =
1853 ARRAY_SIZE(hwsim_channels_2ghz);
1854 sband->bitrates = data->rates;
1855 sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
1856 break;
1857 case IEEE80211_BAND_5GHZ:
1858 sband->channels = data->channels_5ghz;
1859 sband->n_channels =
1860 ARRAY_SIZE(hwsim_channels_5ghz);
1861 sband->bitrates = data->rates + 4;
1862 sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
1863 break;
1864 default:
1865 continue;
1866 }
1867
1868 sband->ht_cap.ht_supported = true;
1869 sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
1870 IEEE80211_HT_CAP_GRN_FLD |
1871 IEEE80211_HT_CAP_SGI_40 |
1872 IEEE80211_HT_CAP_DSSSCCK40;
1873 sband->ht_cap.ampdu_factor = 0x3;
1874 sband->ht_cap.ampdu_density = 0x6;
1875 memset(&sband->ht_cap.mcs, 0,
1876 sizeof(sband->ht_cap.mcs));
1877 sband->ht_cap.mcs.rx_mask[0] = 0xff;
1878 sband->ht_cap.mcs.rx_mask[1] = 0xff;
1879 sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
1880
1881 hw->wiphy->bands[band] = sband;
1882 }
1883 /* By default all radios are belonging to the first group */
1884 data->group = 1;
1885 mutex_init(&data->mutex);
1886
1887 /* Enable frame retransmissions for lossy channels */
1888 hw->max_rates = 4;
1889 hw->max_rate_tries = 11;
1890
1891 /* Work to be done prior to ieee80211_register_hw() */
1892 switch (regtest) {
1893 case HWSIM_REGTEST_DISABLED:
1894 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
1895 case HWSIM_REGTEST_DRIVER_REG_ALL:
1896 case HWSIM_REGTEST_DIFF_COUNTRY:
1897 /*
1898 * Nothing to be done for driver regulatory domain
1899 * hints prior to ieee80211_register_hw()
1900 */
1901 break;
1902 case HWSIM_REGTEST_WORLD_ROAM:
1903 if (i == 0) {
1904 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1905 wiphy_apply_custom_regulatory(hw->wiphy,
1906 &hwsim_world_regdom_custom_01);
1907 }
1908 break;
1909 case HWSIM_REGTEST_CUSTOM_WORLD:
1910 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1911 wiphy_apply_custom_regulatory(hw->wiphy,
1912 &hwsim_world_regdom_custom_01);
1913 break;
1914 case HWSIM_REGTEST_CUSTOM_WORLD_2:
1915 if (i == 0) {
1916 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1917 wiphy_apply_custom_regulatory(hw->wiphy,
1918 &hwsim_world_regdom_custom_01);
1919 } else if (i == 1) {
1920 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1921 wiphy_apply_custom_regulatory(hw->wiphy,
1922 &hwsim_world_regdom_custom_02);
1923 }
1924 break;
1925 case HWSIM_REGTEST_STRICT_ALL:
1926 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1927 break;
1928 case HWSIM_REGTEST_STRICT_FOLLOW:
1929 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
1930 if (i == 0)
1931 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1932 break;
1933 case HWSIM_REGTEST_ALL:
1934 if (i == 0) {
1935 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1936 wiphy_apply_custom_regulatory(hw->wiphy,
1937 &hwsim_world_regdom_custom_01);
1938 } else if (i == 1) {
1939 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1940 wiphy_apply_custom_regulatory(hw->wiphy,
1941 &hwsim_world_regdom_custom_02);
1942 } else if (i == 4)
1943 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1944 break;
1945 default:
1946 break;
1947 }
1948
1949 /* give the regulatory workqueue a chance to run */
1950 if (regtest)
1951 schedule_timeout_interruptible(1);
1952 err = ieee80211_register_hw(hw);
1953 if (err < 0) {
1954 printk(KERN_DEBUG "mac80211_hwsim: "
1955 "ieee80211_register_hw failed (%d)\n", err);
1956 goto failed_hw;
1957 }
1958
1959 /* Work to be done after to ieee80211_register_hw() */
1960 switch (regtest) {
1961 case HWSIM_REGTEST_WORLD_ROAM:
1962 case HWSIM_REGTEST_DISABLED:
1963 break;
1964 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
1965 if (!i)
1966 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1967 break;
1968 case HWSIM_REGTEST_DRIVER_REG_ALL:
1969 case HWSIM_REGTEST_STRICT_ALL:
1970 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1971 break;
1972 case HWSIM_REGTEST_DIFF_COUNTRY:
1973 if (i < ARRAY_SIZE(hwsim_alpha2s))
1974 regulatory_hint(hw->wiphy, hwsim_alpha2s[i]);
1975 break;
1976 case HWSIM_REGTEST_CUSTOM_WORLD:
1977 case HWSIM_REGTEST_CUSTOM_WORLD_2:
1978 /*
1979 * Nothing to be done for custom world regulatory
1980 * domains after to ieee80211_register_hw
1981 */
1982 break;
1983 case HWSIM_REGTEST_STRICT_FOLLOW:
1984 if (i == 0)
1985 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1986 break;
1987 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
1988 if (i == 0)
1989 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1990 else if (i == 1)
1991 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
1992 break;
1993 case HWSIM_REGTEST_ALL:
1994 if (i == 2)
1995 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1996 else if (i == 3)
1997 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
1998 else if (i == 4)
1999 regulatory_hint(hw->wiphy, hwsim_alpha2s[2]);
2000 break;
2001 default:
2002 break;
2003 }
2004
2005 wiphy_debug(hw->wiphy, "hwaddr %pm registered\n",
2006 hw->wiphy->perm_addr);
2007
2008 data->debugfs = debugfs_create_dir("hwsim",
2009 hw->wiphy->debugfsdir);
2010 data->debugfs_ps = debugfs_create_file("ps", 0666,
2011 data->debugfs, data,
2012 &hwsim_fops_ps);
2013 data->debugfs_group = debugfs_create_file("group", 0666,
2014 data->debugfs, data,
2015 &hwsim_fops_group);
2016
2017 setup_timer(&data->beacon_timer, mac80211_hwsim_beacon,
2018 (unsigned long) hw);
2019
2020 list_add_tail(&data->list, &hwsim_radios);
2021 }
2022
2023 hwsim_mon = alloc_netdev(0, "hwsim%d", hwsim_mon_setup);
2024 if (hwsim_mon == NULL)
2025 goto failed;
2026
2027 rtnl_lock();
2028
2029 err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
2030 if (err < 0)
2031 goto failed_mon;
2032
2033
2034 err = register_netdevice(hwsim_mon);
2035 if (err < 0)
2036 goto failed_mon;
2037
2038 rtnl_unlock();
2039
2040 err = hwsim_init_netlink();
2041 if (err < 0)
2042 goto failed_nl;
2043
2044 return 0;
2045
2046 failed_nl:
2047 printk(KERN_DEBUG "mac_80211_hwsim: failed initializing netlink\n");
2048 return err;
2049
2050 failed_mon:
2051 rtnl_unlock();
2052 free_netdev(hwsim_mon);
2053 mac80211_hwsim_free();
2054 return err;
2055
2056 failed_hw:
2057 device_unregister(data->dev);
2058 failed_drvdata:
2059 ieee80211_free_hw(hw);
2060 failed:
2061 mac80211_hwsim_free();
2062 return err;
2063 }
2064
2065
2066 static void __exit exit_mac80211_hwsim(void)
2067 {
2068 printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
2069
2070 hwsim_exit_netlink();
2071
2072 mac80211_hwsim_free();
2073 unregister_netdev(hwsim_mon);
2074 }
2075
2076
2077 module_init(init_mac80211_hwsim);
2078 module_exit(exit_mac80211_hwsim);
Linux kernel - Deliverables
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