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Merge branch 'for-linus' of git://git.linaro.org/people/mszyprowski/linux-dma-mapping
[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 NLA_PUT(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
586 sizeof(struct mac_address), data->addresses[1].addr);
587
588 /* We get the skb->data */
589 NLA_PUT(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data);
590
591 /* We get the flags for this transmission, and we translate them to
592 wmediumd flags */
593
594 if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
595 hwsim_flags |= HWSIM_TX_CTL_REQ_TX_STATUS;
596
597 if (info->flags & IEEE80211_TX_CTL_NO_ACK)
598 hwsim_flags |= HWSIM_TX_CTL_NO_ACK;
599
600 NLA_PUT_U32(skb, HWSIM_ATTR_FLAGS, hwsim_flags);
601
602 /* We get the tx control (rate and retries) info*/
603
604 for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
605 tx_attempts[i].idx = info->status.rates[i].idx;
606 tx_attempts[i].count = info->status.rates[i].count;
607 }
608
609 NLA_PUT(skb, HWSIM_ATTR_TX_INFO,
610 sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
611 tx_attempts);
612
613 /* We create a cookie to identify this skb */
614 NLA_PUT_U64(skb, HWSIM_ATTR_COOKIE, (unsigned long) my_skb);
615
616 genlmsg_end(skb, msg_head);
617 genlmsg_unicast(&init_net, skb, dst_pid);
618
619 /* Enqueue the packet */
620 skb_queue_tail(&data->pending, my_skb);
621 return;
622
623 nla_put_failure:
624 printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
625 }
626
627 static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
628 struct sk_buff *skb)
629 {
630 struct mac80211_hwsim_data *data = hw->priv, *data2;
631 bool ack = false;
632 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
633 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
634 struct ieee80211_rx_status rx_status;
635
636 if (data->idle) {
637 wiphy_debug(hw->wiphy, "Trying to TX when idle - reject\n");
638 return false;
639 }
640
641 memset(&rx_status, 0, sizeof(rx_status));
642 rx_status.flag |= RX_FLAG_MACTIME_MPDU;
643 rx_status.freq = data->channel->center_freq;
644 rx_status.band = data->channel->band;
645 rx_status.rate_idx = info->control.rates[0].idx;
646 if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
647 rx_status.flag |= RX_FLAG_HT;
648 if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
649 rx_status.flag |= RX_FLAG_40MHZ;
650 if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
651 rx_status.flag |= RX_FLAG_SHORT_GI;
652 /* TODO: simulate real signal strength (and optional packet loss) */
653 rx_status.signal = data->power_level - 50;
654
655 if (data->ps != PS_DISABLED)
656 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
657
658 /* release the skb's source info */
659 skb_orphan(skb);
660 skb_dst_drop(skb);
661 skb->mark = 0;
662 secpath_reset(skb);
663 nf_reset(skb);
664
665 /* Copy skb to all enabled radios that are on the current frequency */
666 spin_lock(&hwsim_radio_lock);
667 list_for_each_entry(data2, &hwsim_radios, list) {
668 struct sk_buff *nskb;
669
670 if (data == data2)
671 continue;
672
673 if (data2->idle || !data2->started ||
674 !hwsim_ps_rx_ok(data2, skb) ||
675 !data->channel || !data2->channel ||
676 data->channel->center_freq != data2->channel->center_freq ||
677 !(data->group & data2->group))
678 continue;
679
680 nskb = skb_copy(skb, GFP_ATOMIC);
681 if (nskb == NULL)
682 continue;
683
684 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
685 ack = true;
686 rx_status.mactime =
687 le64_to_cpu(__mac80211_hwsim_get_tsf(data2));
688 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
689 ieee80211_rx_irqsafe(data2->hw, nskb);
690 }
691 spin_unlock(&hwsim_radio_lock);
692
693 return ack;
694 }
695
696 static void mac80211_hwsim_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
697 {
698 bool ack;
699 struct ieee80211_tx_info *txi;
700 u32 _pid;
701 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *) skb->data;
702 struct mac80211_hwsim_data *data = hw->priv;
703
704 if (ieee80211_is_beacon(mgmt->frame_control) ||
705 ieee80211_is_probe_resp(mgmt->frame_control))
706 mgmt->u.beacon.timestamp = __mac80211_hwsim_get_tsf(data);
707
708 mac80211_hwsim_monitor_rx(hw, skb);
709
710 if (skb->len < 10) {
711 /* Should not happen; just a sanity check for addr1 use */
712 dev_kfree_skb(skb);
713 return;
714 }
715
716 /* wmediumd mode check */
717 _pid = ACCESS_ONCE(wmediumd_pid);
718
719 if (_pid)
720 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
721
722 /* NO wmediumd detected, perfect medium simulation */
723 ack = mac80211_hwsim_tx_frame_no_nl(hw, skb);
724
725 if (ack && skb->len >= 16) {
726 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
727 mac80211_hwsim_monitor_ack(hw, hdr->addr2);
728 }
729
730 txi = IEEE80211_SKB_CB(skb);
731
732 if (txi->control.vif)
733 hwsim_check_magic(txi->control.vif);
734 if (txi->control.sta)
735 hwsim_check_sta_magic(txi->control.sta);
736
737 ieee80211_tx_info_clear_status(txi);
738 if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
739 txi->flags |= IEEE80211_TX_STAT_ACK;
740 ieee80211_tx_status_irqsafe(hw, skb);
741 }
742
743
744 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
745 {
746 struct mac80211_hwsim_data *data = hw->priv;
747 wiphy_debug(hw->wiphy, "%s\n", __func__);
748 data->started = true;
749 return 0;
750 }
751
752
753 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
754 {
755 struct mac80211_hwsim_data *data = hw->priv;
756 data->started = false;
757 del_timer(&data->beacon_timer);
758 wiphy_debug(hw->wiphy, "%s\n", __func__);
759 }
760
761
762 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
763 struct ieee80211_vif *vif)
764 {
765 wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
766 __func__, ieee80211_vif_type_p2p(vif),
767 vif->addr);
768 hwsim_set_magic(vif);
769 return 0;
770 }
771
772
773 static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
774 struct ieee80211_vif *vif,
775 enum nl80211_iftype newtype,
776 bool newp2p)
777 {
778 newtype = ieee80211_iftype_p2p(newtype, newp2p);
779 wiphy_debug(hw->wiphy,
780 "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
781 __func__, ieee80211_vif_type_p2p(vif),
782 newtype, vif->addr);
783 hwsim_check_magic(vif);
784
785 return 0;
786 }
787
788 static void mac80211_hwsim_remove_interface(
789 struct ieee80211_hw *hw, struct ieee80211_vif *vif)
790 {
791 wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
792 __func__, ieee80211_vif_type_p2p(vif),
793 vif->addr);
794 hwsim_check_magic(vif);
795 hwsim_clear_magic(vif);
796 }
797
798
799 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
800 struct ieee80211_vif *vif)
801 {
802 struct ieee80211_hw *hw = arg;
803 struct mac80211_hwsim_data *data = hw->priv;
804 struct sk_buff *skb;
805 struct ieee80211_tx_info *info;
806 u32 _pid;
807 struct ieee80211_mgmt *mgmt;
808
809 hwsim_check_magic(vif);
810
811 if (vif->type != NL80211_IFTYPE_AP &&
812 vif->type != NL80211_IFTYPE_MESH_POINT &&
813 vif->type != NL80211_IFTYPE_ADHOC)
814 return;
815
816 skb = ieee80211_beacon_get(hw, vif);
817 if (skb == NULL)
818 return;
819 info = IEEE80211_SKB_CB(skb);
820
821 mgmt = (struct ieee80211_mgmt *) skb->data;
822 mgmt->u.beacon.timestamp = __mac80211_hwsim_get_tsf(data);
823
824 mac80211_hwsim_monitor_rx(hw, skb);
825
826 /* wmediumd mode check */
827 _pid = ACCESS_ONCE(wmediumd_pid);
828
829 if (_pid)
830 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
831
832 mac80211_hwsim_tx_frame_no_nl(hw, skb);
833 dev_kfree_skb(skb);
834 }
835
836
837 static void mac80211_hwsim_beacon(unsigned long arg)
838 {
839 struct ieee80211_hw *hw = (struct ieee80211_hw *) arg;
840 struct mac80211_hwsim_data *data = hw->priv;
841
842 if (!data->started)
843 return;
844
845 ieee80211_iterate_active_interfaces_atomic(
846 hw, mac80211_hwsim_beacon_tx, hw);
847
848 data->beacon_timer.expires = jiffies + data->beacon_int;
849 add_timer(&data->beacon_timer);
850 }
851
852 static const char *hwsim_chantypes[] = {
853 [NL80211_CHAN_NO_HT] = "noht",
854 [NL80211_CHAN_HT20] = "ht20",
855 [NL80211_CHAN_HT40MINUS] = "ht40-",
856 [NL80211_CHAN_HT40PLUS] = "ht40+",
857 };
858
859 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
860 {
861 struct mac80211_hwsim_data *data = hw->priv;
862 struct ieee80211_conf *conf = &hw->conf;
863 static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
864 [IEEE80211_SMPS_AUTOMATIC] = "auto",
865 [IEEE80211_SMPS_OFF] = "off",
866 [IEEE80211_SMPS_STATIC] = "static",
867 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
868 };
869
870 wiphy_debug(hw->wiphy,
871 "%s (freq=%d/%s idle=%d ps=%d smps=%s)\n",
872 __func__,
873 conf->channel->center_freq,
874 hwsim_chantypes[conf->channel_type],
875 !!(conf->flags & IEEE80211_CONF_IDLE),
876 !!(conf->flags & IEEE80211_CONF_PS),
877 smps_modes[conf->smps_mode]);
878
879 data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
880
881 data->channel = conf->channel;
882 data->power_level = conf->power_level;
883 if (!data->started || !data->beacon_int)
884 del_timer(&data->beacon_timer);
885 else
886 mod_timer(&data->beacon_timer, jiffies + data->beacon_int);
887
888 return 0;
889 }
890
891
892 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
893 unsigned int changed_flags,
894 unsigned int *total_flags,u64 multicast)
895 {
896 struct mac80211_hwsim_data *data = hw->priv;
897
898 wiphy_debug(hw->wiphy, "%s\n", __func__);
899
900 data->rx_filter = 0;
901 if (*total_flags & FIF_PROMISC_IN_BSS)
902 data->rx_filter |= FIF_PROMISC_IN_BSS;
903 if (*total_flags & FIF_ALLMULTI)
904 data->rx_filter |= FIF_ALLMULTI;
905
906 *total_flags = data->rx_filter;
907 }
908
909 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
910 struct ieee80211_vif *vif,
911 struct ieee80211_bss_conf *info,
912 u32 changed)
913 {
914 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
915 struct mac80211_hwsim_data *data = hw->priv;
916
917 hwsim_check_magic(vif);
918
919 wiphy_debug(hw->wiphy, "%s(changed=0x%x)\n", __func__, changed);
920
921 if (changed & BSS_CHANGED_BSSID) {
922 wiphy_debug(hw->wiphy, "%s: BSSID changed: %pM\n",
923 __func__, info->bssid);
924 memcpy(vp->bssid, info->bssid, ETH_ALEN);
925 }
926
927 if (changed & BSS_CHANGED_ASSOC) {
928 wiphy_debug(hw->wiphy, " ASSOC: assoc=%d aid=%d\n",
929 info->assoc, info->aid);
930 vp->assoc = info->assoc;
931 vp->aid = info->aid;
932 }
933
934 if (changed & BSS_CHANGED_BEACON_INT) {
935 wiphy_debug(hw->wiphy, " BCNINT: %d\n", info->beacon_int);
936 data->beacon_int = 1024 * info->beacon_int / 1000 * HZ / 1000;
937 if (WARN_ON(!data->beacon_int))
938 data->beacon_int = 1;
939 if (data->started)
940 mod_timer(&data->beacon_timer,
941 jiffies + data->beacon_int);
942 }
943
944 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
945 wiphy_debug(hw->wiphy, " ERP_CTS_PROT: %d\n",
946 info->use_cts_prot);
947 }
948
949 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
950 wiphy_debug(hw->wiphy, " ERP_PREAMBLE: %d\n",
951 info->use_short_preamble);
952 }
953
954 if (changed & BSS_CHANGED_ERP_SLOT) {
955 wiphy_debug(hw->wiphy, " ERP_SLOT: %d\n", info->use_short_slot);
956 }
957
958 if (changed & BSS_CHANGED_HT) {
959 wiphy_debug(hw->wiphy, " HT: op_mode=0x%x, chantype=%s\n",
960 info->ht_operation_mode,
961 hwsim_chantypes[info->channel_type]);
962 }
963
964 if (changed & BSS_CHANGED_BASIC_RATES) {
965 wiphy_debug(hw->wiphy, " BASIC_RATES: 0x%llx\n",
966 (unsigned long long) info->basic_rates);
967 }
968 }
969
970 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
971 struct ieee80211_vif *vif,
972 struct ieee80211_sta *sta)
973 {
974 hwsim_check_magic(vif);
975 hwsim_set_sta_magic(sta);
976
977 return 0;
978 }
979
980 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
981 struct ieee80211_vif *vif,
982 struct ieee80211_sta *sta)
983 {
984 hwsim_check_magic(vif);
985 hwsim_clear_sta_magic(sta);
986
987 return 0;
988 }
989
990 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
991 struct ieee80211_vif *vif,
992 enum sta_notify_cmd cmd,
993 struct ieee80211_sta *sta)
994 {
995 hwsim_check_magic(vif);
996
997 switch (cmd) {
998 case STA_NOTIFY_SLEEP:
999 case STA_NOTIFY_AWAKE:
1000 /* TODO: make good use of these flags */
1001 break;
1002 default:
1003 WARN(1, "Invalid sta notify: %d\n", cmd);
1004 break;
1005 }
1006 }
1007
1008 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
1009 struct ieee80211_sta *sta,
1010 bool set)
1011 {
1012 hwsim_check_sta_magic(sta);
1013 return 0;
1014 }
1015
1016 static int mac80211_hwsim_conf_tx(
1017 struct ieee80211_hw *hw,
1018 struct ieee80211_vif *vif, u16 queue,
1019 const struct ieee80211_tx_queue_params *params)
1020 {
1021 wiphy_debug(hw->wiphy,
1022 "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
1023 __func__, queue,
1024 params->txop, params->cw_min,
1025 params->cw_max, params->aifs);
1026 return 0;
1027 }
1028
1029 static int mac80211_hwsim_get_survey(
1030 struct ieee80211_hw *hw, int idx,
1031 struct survey_info *survey)
1032 {
1033 struct ieee80211_conf *conf = &hw->conf;
1034
1035 wiphy_debug(hw->wiphy, "%s (idx=%d)\n", __func__, idx);
1036
1037 if (idx != 0)
1038 return -ENOENT;
1039
1040 /* Current channel */
1041 survey->channel = conf->channel;
1042
1043 /*
1044 * Magically conjured noise level --- this is only ok for simulated hardware.
1045 *
1046 * A real driver which cannot determine the real channel noise MUST NOT
1047 * report any noise, especially not a magically conjured one :-)
1048 */
1049 survey->filled = SURVEY_INFO_NOISE_DBM;
1050 survey->noise = -92;
1051
1052 return 0;
1053 }
1054
1055 #ifdef CONFIG_NL80211_TESTMODE
1056 /*
1057 * This section contains example code for using netlink
1058 * attributes with the testmode command in nl80211.
1059 */
1060
1061 /* These enums need to be kept in sync with userspace */
1062 enum hwsim_testmode_attr {
1063 __HWSIM_TM_ATTR_INVALID = 0,
1064 HWSIM_TM_ATTR_CMD = 1,
1065 HWSIM_TM_ATTR_PS = 2,
1066
1067 /* keep last */
1068 __HWSIM_TM_ATTR_AFTER_LAST,
1069 HWSIM_TM_ATTR_MAX = __HWSIM_TM_ATTR_AFTER_LAST - 1
1070 };
1071
1072 enum hwsim_testmode_cmd {
1073 HWSIM_TM_CMD_SET_PS = 0,
1074 HWSIM_TM_CMD_GET_PS = 1,
1075 };
1076
1077 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
1078 [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
1079 [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
1080 };
1081
1082 static int hwsim_fops_ps_write(void *dat, u64 val);
1083
1084 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
1085 void *data, int len)
1086 {
1087 struct mac80211_hwsim_data *hwsim = hw->priv;
1088 struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
1089 struct sk_buff *skb;
1090 int err, ps;
1091
1092 err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
1093 hwsim_testmode_policy);
1094 if (err)
1095 return err;
1096
1097 if (!tb[HWSIM_TM_ATTR_CMD])
1098 return -EINVAL;
1099
1100 switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
1101 case HWSIM_TM_CMD_SET_PS:
1102 if (!tb[HWSIM_TM_ATTR_PS])
1103 return -EINVAL;
1104 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
1105 return hwsim_fops_ps_write(hwsim, ps);
1106 case HWSIM_TM_CMD_GET_PS:
1107 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
1108 nla_total_size(sizeof(u32)));
1109 if (!skb)
1110 return -ENOMEM;
1111 NLA_PUT_U32(skb, HWSIM_TM_ATTR_PS, hwsim->ps);
1112 return cfg80211_testmode_reply(skb);
1113 default:
1114 return -EOPNOTSUPP;
1115 }
1116
1117 nla_put_failure:
1118 kfree_skb(skb);
1119 return -ENOBUFS;
1120 }
1121 #endif
1122
1123 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
1124 struct ieee80211_vif *vif,
1125 enum ieee80211_ampdu_mlme_action action,
1126 struct ieee80211_sta *sta, u16 tid, u16 *ssn,
1127 u8 buf_size)
1128 {
1129 switch (action) {
1130 case IEEE80211_AMPDU_TX_START:
1131 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1132 break;
1133 case IEEE80211_AMPDU_TX_STOP:
1134 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1135 break;
1136 case IEEE80211_AMPDU_TX_OPERATIONAL:
1137 break;
1138 case IEEE80211_AMPDU_RX_START:
1139 case IEEE80211_AMPDU_RX_STOP:
1140 break;
1141 default:
1142 return -EOPNOTSUPP;
1143 }
1144
1145 return 0;
1146 }
1147
1148 static void mac80211_hwsim_flush(struct ieee80211_hw *hw, bool drop)
1149 {
1150 /* Not implemented, queues only on kernel side */
1151 }
1152
1153 struct hw_scan_done {
1154 struct delayed_work w;
1155 struct ieee80211_hw *hw;
1156 };
1157
1158 static void hw_scan_done(struct work_struct *work)
1159 {
1160 struct hw_scan_done *hsd =
1161 container_of(work, struct hw_scan_done, w.work);
1162
1163 ieee80211_scan_completed(hsd->hw, false);
1164 kfree(hsd);
1165 }
1166
1167 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
1168 struct ieee80211_vif *vif,
1169 struct cfg80211_scan_request *req)
1170 {
1171 struct hw_scan_done *hsd = kzalloc(sizeof(*hsd), GFP_KERNEL);
1172 int i;
1173
1174 if (!hsd)
1175 return -ENOMEM;
1176
1177 hsd->hw = hw;
1178 INIT_DELAYED_WORK(&hsd->w, hw_scan_done);
1179
1180 printk(KERN_DEBUG "hwsim hw_scan request\n");
1181 for (i = 0; i < req->n_channels; i++)
1182 printk(KERN_DEBUG "hwsim hw_scan freq %d\n",
1183 req->channels[i]->center_freq);
1184 print_hex_dump(KERN_DEBUG, "scan IEs: ", DUMP_PREFIX_OFFSET,
1185 16, 1, req->ie, req->ie_len, 1);
1186
1187 ieee80211_queue_delayed_work(hw, &hsd->w, 2 * HZ);
1188
1189 return 0;
1190 }
1191
1192 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw)
1193 {
1194 struct mac80211_hwsim_data *hwsim = hw->priv;
1195
1196 mutex_lock(&hwsim->mutex);
1197
1198 if (hwsim->scanning) {
1199 printk(KERN_DEBUG "two hwsim sw_scans detected!\n");
1200 goto out;
1201 }
1202
1203 printk(KERN_DEBUG "hwsim sw_scan request, prepping stuff\n");
1204 hwsim->scanning = true;
1205
1206 out:
1207 mutex_unlock(&hwsim->mutex);
1208 }
1209
1210 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw)
1211 {
1212 struct mac80211_hwsim_data *hwsim = hw->priv;
1213
1214 mutex_lock(&hwsim->mutex);
1215
1216 printk(KERN_DEBUG "hwsim sw_scan_complete\n");
1217 hwsim->scanning = false;
1218
1219 mutex_unlock(&hwsim->mutex);
1220 }
1221
1222 static struct ieee80211_ops mac80211_hwsim_ops =
1223 {
1224 .tx = mac80211_hwsim_tx,
1225 .start = mac80211_hwsim_start,
1226 .stop = mac80211_hwsim_stop,
1227 .add_interface = mac80211_hwsim_add_interface,
1228 .change_interface = mac80211_hwsim_change_interface,
1229 .remove_interface = mac80211_hwsim_remove_interface,
1230 .config = mac80211_hwsim_config,
1231 .configure_filter = mac80211_hwsim_configure_filter,
1232 .bss_info_changed = mac80211_hwsim_bss_info_changed,
1233 .sta_add = mac80211_hwsim_sta_add,
1234 .sta_remove = mac80211_hwsim_sta_remove,
1235 .sta_notify = mac80211_hwsim_sta_notify,
1236 .set_tim = mac80211_hwsim_set_tim,
1237 .conf_tx = mac80211_hwsim_conf_tx,
1238 .get_survey = mac80211_hwsim_get_survey,
1239 CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)
1240 .ampdu_action = mac80211_hwsim_ampdu_action,
1241 .sw_scan_start = mac80211_hwsim_sw_scan,
1242 .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
1243 .flush = mac80211_hwsim_flush,
1244 .get_tsf = mac80211_hwsim_get_tsf,
1245 .set_tsf = mac80211_hwsim_set_tsf,
1246 };
1247
1248
1249 static void mac80211_hwsim_free(void)
1250 {
1251 struct list_head tmplist, *i, *tmp;
1252 struct mac80211_hwsim_data *data, *tmpdata;
1253
1254 INIT_LIST_HEAD(&tmplist);
1255
1256 spin_lock_bh(&hwsim_radio_lock);
1257 list_for_each_safe(i, tmp, &hwsim_radios)
1258 list_move(i, &tmplist);
1259 spin_unlock_bh(&hwsim_radio_lock);
1260
1261 list_for_each_entry_safe(data, tmpdata, &tmplist, list) {
1262 debugfs_remove(data->debugfs_group);
1263 debugfs_remove(data->debugfs_ps);
1264 debugfs_remove(data->debugfs);
1265 ieee80211_unregister_hw(data->hw);
1266 device_unregister(data->dev);
1267 ieee80211_free_hw(data->hw);
1268 }
1269 class_destroy(hwsim_class);
1270 }
1271
1272
1273 static struct device_driver mac80211_hwsim_driver = {
1274 .name = "mac80211_hwsim"
1275 };
1276
1277 static const struct net_device_ops hwsim_netdev_ops = {
1278 .ndo_start_xmit = hwsim_mon_xmit,
1279 .ndo_change_mtu = eth_change_mtu,
1280 .ndo_set_mac_address = eth_mac_addr,
1281 .ndo_validate_addr = eth_validate_addr,
1282 };
1283
1284 static void hwsim_mon_setup(struct net_device *dev)
1285 {
1286 dev->netdev_ops = &hwsim_netdev_ops;
1287 dev->destructor = free_netdev;
1288 ether_setup(dev);
1289 dev->tx_queue_len = 0;
1290 dev->type = ARPHRD_IEEE80211_RADIOTAP;
1291 memset(dev->dev_addr, 0, ETH_ALEN);
1292 dev->dev_addr[0] = 0x12;
1293 }
1294
1295
1296 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
1297 {
1298 struct mac80211_hwsim_data *data = dat;
1299 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1300 struct sk_buff *skb;
1301 struct ieee80211_pspoll *pspoll;
1302 u32 _pid;
1303
1304 if (!vp->assoc)
1305 return;
1306
1307 wiphy_debug(data->hw->wiphy,
1308 "%s: send PS-Poll to %pM for aid %d\n",
1309 __func__, vp->bssid, vp->aid);
1310
1311 skb = dev_alloc_skb(sizeof(*pspoll));
1312 if (!skb)
1313 return;
1314 pspoll = (void *) skb_put(skb, sizeof(*pspoll));
1315 pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
1316 IEEE80211_STYPE_PSPOLL |
1317 IEEE80211_FCTL_PM);
1318 pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
1319 memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
1320 memcpy(pspoll->ta, mac, ETH_ALEN);
1321
1322 /* wmediumd mode check */
1323 _pid = ACCESS_ONCE(wmediumd_pid);
1324
1325 if (_pid)
1326 return mac80211_hwsim_tx_frame_nl(data->hw, skb, _pid);
1327
1328 if (!mac80211_hwsim_tx_frame_no_nl(data->hw, skb))
1329 printk(KERN_DEBUG "%s: PS-poll frame not ack'ed\n", __func__);
1330 dev_kfree_skb(skb);
1331 }
1332
1333
1334 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
1335 struct ieee80211_vif *vif, int ps)
1336 {
1337 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1338 struct sk_buff *skb;
1339 struct ieee80211_hdr *hdr;
1340 u32 _pid;
1341
1342 if (!vp->assoc)
1343 return;
1344
1345 wiphy_debug(data->hw->wiphy,
1346 "%s: send data::nullfunc to %pM ps=%d\n",
1347 __func__, vp->bssid, ps);
1348
1349 skb = dev_alloc_skb(sizeof(*hdr));
1350 if (!skb)
1351 return;
1352 hdr = (void *) skb_put(skb, sizeof(*hdr) - ETH_ALEN);
1353 hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
1354 IEEE80211_STYPE_NULLFUNC |
1355 (ps ? IEEE80211_FCTL_PM : 0));
1356 hdr->duration_id = cpu_to_le16(0);
1357 memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
1358 memcpy(hdr->addr2, mac, ETH_ALEN);
1359 memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
1360
1361 /* wmediumd mode check */
1362 _pid = ACCESS_ONCE(wmediumd_pid);
1363
1364 if (_pid)
1365 return mac80211_hwsim_tx_frame_nl(data->hw, skb, _pid);
1366
1367 if (!mac80211_hwsim_tx_frame_no_nl(data->hw, skb))
1368 printk(KERN_DEBUG "%s: nullfunc frame not ack'ed\n", __func__);
1369 dev_kfree_skb(skb);
1370 }
1371
1372
1373 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
1374 struct ieee80211_vif *vif)
1375 {
1376 struct mac80211_hwsim_data *data = dat;
1377 hwsim_send_nullfunc(data, mac, vif, 1);
1378 }
1379
1380
1381 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
1382 struct ieee80211_vif *vif)
1383 {
1384 struct mac80211_hwsim_data *data = dat;
1385 hwsim_send_nullfunc(data, mac, vif, 0);
1386 }
1387
1388
1389 static int hwsim_fops_ps_read(void *dat, u64 *val)
1390 {
1391 struct mac80211_hwsim_data *data = dat;
1392 *val = data->ps;
1393 return 0;
1394 }
1395
1396 static int hwsim_fops_ps_write(void *dat, u64 val)
1397 {
1398 struct mac80211_hwsim_data *data = dat;
1399 enum ps_mode old_ps;
1400
1401 if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
1402 val != PS_MANUAL_POLL)
1403 return -EINVAL;
1404
1405 old_ps = data->ps;
1406 data->ps = val;
1407
1408 if (val == PS_MANUAL_POLL) {
1409 ieee80211_iterate_active_interfaces(data->hw,
1410 hwsim_send_ps_poll, data);
1411 data->ps_poll_pending = true;
1412 } else if (old_ps == PS_DISABLED && val != PS_DISABLED) {
1413 ieee80211_iterate_active_interfaces(data->hw,
1414 hwsim_send_nullfunc_ps,
1415 data);
1416 } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
1417 ieee80211_iterate_active_interfaces(data->hw,
1418 hwsim_send_nullfunc_no_ps,
1419 data);
1420 }
1421
1422 return 0;
1423 }
1424
1425 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
1426 "%llu\n");
1427
1428
1429 static int hwsim_fops_group_read(void *dat, u64 *val)
1430 {
1431 struct mac80211_hwsim_data *data = dat;
1432 *val = data->group;
1433 return 0;
1434 }
1435
1436 static int hwsim_fops_group_write(void *dat, u64 val)
1437 {
1438 struct mac80211_hwsim_data *data = dat;
1439 data->group = val;
1440 return 0;
1441 }
1442
1443 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
1444 hwsim_fops_group_read, hwsim_fops_group_write,
1445 "%llx\n");
1446
1447 struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(
1448 struct mac_address *addr)
1449 {
1450 struct mac80211_hwsim_data *data;
1451 bool _found = false;
1452
1453 spin_lock_bh(&hwsim_radio_lock);
1454 list_for_each_entry(data, &hwsim_radios, list) {
1455 if (memcmp(data->addresses[1].addr, addr,
1456 sizeof(struct mac_address)) == 0) {
1457 _found = true;
1458 break;
1459 }
1460 }
1461 spin_unlock_bh(&hwsim_radio_lock);
1462
1463 if (!_found)
1464 return NULL;
1465
1466 return data;
1467 }
1468
1469 static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
1470 struct genl_info *info)
1471 {
1472
1473 struct ieee80211_hdr *hdr;
1474 struct mac80211_hwsim_data *data2;
1475 struct ieee80211_tx_info *txi;
1476 struct hwsim_tx_rate *tx_attempts;
1477 struct sk_buff __user *ret_skb;
1478 struct sk_buff *skb, *tmp;
1479 struct mac_address *src;
1480 unsigned int hwsim_flags;
1481
1482 int i;
1483 bool found = false;
1484
1485 if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
1486 !info->attrs[HWSIM_ATTR_FLAGS] ||
1487 !info->attrs[HWSIM_ATTR_COOKIE] ||
1488 !info->attrs[HWSIM_ATTR_TX_INFO])
1489 goto out;
1490
1491 src = (struct mac_address *)nla_data(
1492 info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
1493 hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
1494
1495 ret_skb = (struct sk_buff __user *)
1496 (unsigned long) nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
1497
1498 data2 = get_hwsim_data_ref_from_addr(src);
1499
1500 if (data2 == NULL)
1501 goto out;
1502
1503 /* look for the skb matching the cookie passed back from user */
1504 skb_queue_walk_safe(&data2->pending, skb, tmp) {
1505 if (skb == ret_skb) {
1506 skb_unlink(skb, &data2->pending);
1507 found = true;
1508 break;
1509 }
1510 }
1511
1512 /* not found */
1513 if (!found)
1514 goto out;
1515
1516 /* Tx info received because the frame was broadcasted on user space,
1517 so we get all the necessary info: tx attempts and skb control buff */
1518
1519 tx_attempts = (struct hwsim_tx_rate *)nla_data(
1520 info->attrs[HWSIM_ATTR_TX_INFO]);
1521
1522 /* now send back TX status */
1523 txi = IEEE80211_SKB_CB(skb);
1524
1525 if (txi->control.vif)
1526 hwsim_check_magic(txi->control.vif);
1527 if (txi->control.sta)
1528 hwsim_check_sta_magic(txi->control.sta);
1529
1530 ieee80211_tx_info_clear_status(txi);
1531
1532 for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
1533 txi->status.rates[i].idx = tx_attempts[i].idx;
1534 txi->status.rates[i].count = tx_attempts[i].count;
1535 /*txi->status.rates[i].flags = 0;*/
1536 }
1537
1538 txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
1539
1540 if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
1541 (hwsim_flags & HWSIM_TX_STAT_ACK)) {
1542 if (skb->len >= 16) {
1543 hdr = (struct ieee80211_hdr *) skb->data;
1544 mac80211_hwsim_monitor_ack(data2->hw, hdr->addr2);
1545 }
1546 }
1547 ieee80211_tx_status_irqsafe(data2->hw, skb);
1548 return 0;
1549 out:
1550 return -EINVAL;
1551
1552 }
1553
1554 static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
1555 struct genl_info *info)
1556 {
1557
1558 struct mac80211_hwsim_data *data2;
1559 struct ieee80211_rx_status rx_status;
1560 struct mac_address *dst;
1561 int frame_data_len;
1562 char *frame_data;
1563 struct sk_buff *skb = NULL;
1564
1565 if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
1566 !info->attrs[HWSIM_ATTR_FRAME] ||
1567 !info->attrs[HWSIM_ATTR_RX_RATE] ||
1568 !info->attrs[HWSIM_ATTR_SIGNAL])
1569 goto out;
1570
1571 dst = (struct mac_address *)nla_data(
1572 info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
1573
1574 frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
1575 frame_data = (char *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
1576
1577 /* Allocate new skb here */
1578 skb = alloc_skb(frame_data_len, GFP_KERNEL);
1579 if (skb == NULL)
1580 goto err;
1581
1582 if (frame_data_len <= IEEE80211_MAX_DATA_LEN) {
1583 /* Copy the data */
1584 memcpy(skb_put(skb, frame_data_len), frame_data,
1585 frame_data_len);
1586 } else
1587 goto err;
1588
1589 data2 = get_hwsim_data_ref_from_addr(dst);
1590
1591 if (data2 == NULL)
1592 goto out;
1593
1594 /* check if radio is configured properly */
1595
1596 if (data2->idle || !data2->started || !data2->channel)
1597 goto out;
1598
1599 /*A frame is received from user space*/
1600 memset(&rx_status, 0, sizeof(rx_status));
1601 rx_status.freq = data2->channel->center_freq;
1602 rx_status.band = data2->channel->band;
1603 rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
1604 rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
1605
1606 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
1607 ieee80211_rx_irqsafe(data2->hw, skb);
1608
1609 return 0;
1610 err:
1611 printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
1612 goto out;
1613 out:
1614 dev_kfree_skb(skb);
1615 return -EINVAL;
1616 }
1617
1618 static int hwsim_register_received_nl(struct sk_buff *skb_2,
1619 struct genl_info *info)
1620 {
1621 if (info == NULL)
1622 goto out;
1623
1624 wmediumd_pid = info->snd_pid;
1625
1626 printk(KERN_DEBUG "mac80211_hwsim: received a REGISTER, "
1627 "switching to wmediumd mode with pid %d\n", info->snd_pid);
1628
1629 return 0;
1630 out:
1631 printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
1632 return -EINVAL;
1633 }
1634
1635 /* Generic Netlink operations array */
1636 static struct genl_ops hwsim_ops[] = {
1637 {
1638 .cmd = HWSIM_CMD_REGISTER,
1639 .policy = hwsim_genl_policy,
1640 .doit = hwsim_register_received_nl,
1641 .flags = GENL_ADMIN_PERM,
1642 },
1643 {
1644 .cmd = HWSIM_CMD_FRAME,
1645 .policy = hwsim_genl_policy,
1646 .doit = hwsim_cloned_frame_received_nl,
1647 },
1648 {
1649 .cmd = HWSIM_CMD_TX_INFO_FRAME,
1650 .policy = hwsim_genl_policy,
1651 .doit = hwsim_tx_info_frame_received_nl,
1652 },
1653 };
1654
1655 static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
1656 unsigned long state,
1657 void *_notify)
1658 {
1659 struct netlink_notify *notify = _notify;
1660
1661 if (state != NETLINK_URELEASE)
1662 return NOTIFY_DONE;
1663
1664 if (notify->pid == wmediumd_pid) {
1665 printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
1666 " socket, switching to perfect channel medium\n");
1667 wmediumd_pid = 0;
1668 }
1669 return NOTIFY_DONE;
1670
1671 }
1672
1673 static struct notifier_block hwsim_netlink_notifier = {
1674 .notifier_call = mac80211_hwsim_netlink_notify,
1675 };
1676
1677 static int hwsim_init_netlink(void)
1678 {
1679 int rc;
1680 printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
1681
1682 rc = genl_register_family_with_ops(&hwsim_genl_family,
1683 hwsim_ops, ARRAY_SIZE(hwsim_ops));
1684 if (rc)
1685 goto failure;
1686
1687 rc = netlink_register_notifier(&hwsim_netlink_notifier);
1688 if (rc)
1689 goto failure;
1690
1691 return 0;
1692
1693 failure:
1694 printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
1695 return -EINVAL;
1696 }
1697
1698 static void hwsim_exit_netlink(void)
1699 {
1700 int ret;
1701
1702 printk(KERN_INFO "mac80211_hwsim: closing netlink\n");
1703 /* unregister the notifier */
1704 netlink_unregister_notifier(&hwsim_netlink_notifier);
1705 /* unregister the family */
1706 ret = genl_unregister_family(&hwsim_genl_family);
1707 if (ret)
1708 printk(KERN_DEBUG "mac80211_hwsim: "
1709 "unregister family %i\n", ret);
1710 }
1711
1712 static int __init init_mac80211_hwsim(void)
1713 {
1714 int i, err = 0;
1715 u8 addr[ETH_ALEN];
1716 struct mac80211_hwsim_data *data;
1717 struct ieee80211_hw *hw;
1718 enum ieee80211_band band;
1719
1720 if (radios < 1 || radios > 100)
1721 return -EINVAL;
1722
1723 if (fake_hw_scan) {
1724 mac80211_hwsim_ops.hw_scan = mac80211_hwsim_hw_scan;
1725 mac80211_hwsim_ops.sw_scan_start = NULL;
1726 mac80211_hwsim_ops.sw_scan_complete = NULL;
1727 }
1728
1729 spin_lock_init(&hwsim_radio_lock);
1730 INIT_LIST_HEAD(&hwsim_radios);
1731
1732 hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
1733 if (IS_ERR(hwsim_class))
1734 return PTR_ERR(hwsim_class);
1735
1736 memset(addr, 0, ETH_ALEN);
1737 addr[0] = 0x02;
1738
1739 for (i = 0; i < radios; i++) {
1740 printk(KERN_DEBUG "mac80211_hwsim: Initializing radio %d\n",
1741 i);
1742 hw = ieee80211_alloc_hw(sizeof(*data), &mac80211_hwsim_ops);
1743 if (!hw) {
1744 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw "
1745 "failed\n");
1746 err = -ENOMEM;
1747 goto failed;
1748 }
1749 data = hw->priv;
1750 data->hw = hw;
1751
1752 data->dev = device_create(hwsim_class, NULL, 0, hw,
1753 "hwsim%d", i);
1754 if (IS_ERR(data->dev)) {
1755 printk(KERN_DEBUG
1756 "mac80211_hwsim: device_create "
1757 "failed (%ld)\n", PTR_ERR(data->dev));
1758 err = -ENOMEM;
1759 goto failed_drvdata;
1760 }
1761 data->dev->driver = &mac80211_hwsim_driver;
1762 skb_queue_head_init(&data->pending);
1763
1764 SET_IEEE80211_DEV(hw, data->dev);
1765 addr[3] = i >> 8;
1766 addr[4] = i;
1767 memcpy(data->addresses[0].addr, addr, ETH_ALEN);
1768 memcpy(data->addresses[1].addr, addr, ETH_ALEN);
1769 data->addresses[1].addr[0] |= 0x40;
1770 hw->wiphy->n_addresses = 2;
1771 hw->wiphy->addresses = data->addresses;
1772
1773 if (fake_hw_scan) {
1774 hw->wiphy->max_scan_ssids = 255;
1775 hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
1776 }
1777
1778 hw->channel_change_time = 1;
1779 hw->queues = 4;
1780 hw->wiphy->interface_modes =
1781 BIT(NL80211_IFTYPE_STATION) |
1782 BIT(NL80211_IFTYPE_AP) |
1783 BIT(NL80211_IFTYPE_P2P_CLIENT) |
1784 BIT(NL80211_IFTYPE_P2P_GO) |
1785 BIT(NL80211_IFTYPE_ADHOC) |
1786 BIT(NL80211_IFTYPE_MESH_POINT);
1787
1788 hw->flags = IEEE80211_HW_MFP_CAPABLE |
1789 IEEE80211_HW_SIGNAL_DBM |
1790 IEEE80211_HW_SUPPORTS_STATIC_SMPS |
1791 IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
1792 IEEE80211_HW_AMPDU_AGGREGATION;
1793
1794 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS;
1795
1796 /* ask mac80211 to reserve space for magic */
1797 hw->vif_data_size = sizeof(struct hwsim_vif_priv);
1798 hw->sta_data_size = sizeof(struct hwsim_sta_priv);
1799
1800 memcpy(data->channels_2ghz, hwsim_channels_2ghz,
1801 sizeof(hwsim_channels_2ghz));
1802 memcpy(data->channels_5ghz, hwsim_channels_5ghz,
1803 sizeof(hwsim_channels_5ghz));
1804 memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
1805
1806 for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) {
1807 struct ieee80211_supported_band *sband = &data->bands[band];
1808 switch (band) {
1809 case IEEE80211_BAND_2GHZ:
1810 sband->channels = data->channels_2ghz;
1811 sband->n_channels =
1812 ARRAY_SIZE(hwsim_channels_2ghz);
1813 sband->bitrates = data->rates;
1814 sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
1815 break;
1816 case IEEE80211_BAND_5GHZ:
1817 sband->channels = data->channels_5ghz;
1818 sband->n_channels =
1819 ARRAY_SIZE(hwsim_channels_5ghz);
1820 sband->bitrates = data->rates + 4;
1821 sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
1822 break;
1823 default:
1824 break;
1825 }
1826
1827 sband->ht_cap.ht_supported = true;
1828 sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
1829 IEEE80211_HT_CAP_GRN_FLD |
1830 IEEE80211_HT_CAP_SGI_40 |
1831 IEEE80211_HT_CAP_DSSSCCK40;
1832 sband->ht_cap.ampdu_factor = 0x3;
1833 sband->ht_cap.ampdu_density = 0x6;
1834 memset(&sband->ht_cap.mcs, 0,
1835 sizeof(sband->ht_cap.mcs));
1836 sband->ht_cap.mcs.rx_mask[0] = 0xff;
1837 sband->ht_cap.mcs.rx_mask[1] = 0xff;
1838 sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
1839
1840 hw->wiphy->bands[band] = sband;
1841 }
1842 /* By default all radios are belonging to the first group */
1843 data->group = 1;
1844 mutex_init(&data->mutex);
1845
1846 /* Enable frame retransmissions for lossy channels */
1847 hw->max_rates = 4;
1848 hw->max_rate_tries = 11;
1849
1850 /* Work to be done prior to ieee80211_register_hw() */
1851 switch (regtest) {
1852 case HWSIM_REGTEST_DISABLED:
1853 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
1854 case HWSIM_REGTEST_DRIVER_REG_ALL:
1855 case HWSIM_REGTEST_DIFF_COUNTRY:
1856 /*
1857 * Nothing to be done for driver regulatory domain
1858 * hints prior to ieee80211_register_hw()
1859 */
1860 break;
1861 case HWSIM_REGTEST_WORLD_ROAM:
1862 if (i == 0) {
1863 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1864 wiphy_apply_custom_regulatory(hw->wiphy,
1865 &hwsim_world_regdom_custom_01);
1866 }
1867 break;
1868 case HWSIM_REGTEST_CUSTOM_WORLD:
1869 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1870 wiphy_apply_custom_regulatory(hw->wiphy,
1871 &hwsim_world_regdom_custom_01);
1872 break;
1873 case HWSIM_REGTEST_CUSTOM_WORLD_2:
1874 if (i == 0) {
1875 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1876 wiphy_apply_custom_regulatory(hw->wiphy,
1877 &hwsim_world_regdom_custom_01);
1878 } else if (i == 1) {
1879 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1880 wiphy_apply_custom_regulatory(hw->wiphy,
1881 &hwsim_world_regdom_custom_02);
1882 }
1883 break;
1884 case HWSIM_REGTEST_STRICT_ALL:
1885 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1886 break;
1887 case HWSIM_REGTEST_STRICT_FOLLOW:
1888 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
1889 if (i == 0)
1890 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1891 break;
1892 case HWSIM_REGTEST_ALL:
1893 if (i == 0) {
1894 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1895 wiphy_apply_custom_regulatory(hw->wiphy,
1896 &hwsim_world_regdom_custom_01);
1897 } else if (i == 1) {
1898 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1899 wiphy_apply_custom_regulatory(hw->wiphy,
1900 &hwsim_world_regdom_custom_02);
1901 } else if (i == 4)
1902 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1903 break;
1904 default:
1905 break;
1906 }
1907
1908 /* give the regulatory workqueue a chance to run */
1909 if (regtest)
1910 schedule_timeout_interruptible(1);
1911 err = ieee80211_register_hw(hw);
1912 if (err < 0) {
1913 printk(KERN_DEBUG "mac80211_hwsim: "
1914 "ieee80211_register_hw failed (%d)\n", err);
1915 goto failed_hw;
1916 }
1917
1918 /* Work to be done after to ieee80211_register_hw() */
1919 switch (regtest) {
1920 case HWSIM_REGTEST_WORLD_ROAM:
1921 case HWSIM_REGTEST_DISABLED:
1922 break;
1923 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
1924 if (!i)
1925 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1926 break;
1927 case HWSIM_REGTEST_DRIVER_REG_ALL:
1928 case HWSIM_REGTEST_STRICT_ALL:
1929 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1930 break;
1931 case HWSIM_REGTEST_DIFF_COUNTRY:
1932 if (i < ARRAY_SIZE(hwsim_alpha2s))
1933 regulatory_hint(hw->wiphy, hwsim_alpha2s[i]);
1934 break;
1935 case HWSIM_REGTEST_CUSTOM_WORLD:
1936 case HWSIM_REGTEST_CUSTOM_WORLD_2:
1937 /*
1938 * Nothing to be done for custom world regulatory
1939 * domains after to ieee80211_register_hw
1940 */
1941 break;
1942 case HWSIM_REGTEST_STRICT_FOLLOW:
1943 if (i == 0)
1944 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1945 break;
1946 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
1947 if (i == 0)
1948 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1949 else if (i == 1)
1950 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
1951 break;
1952 case HWSIM_REGTEST_ALL:
1953 if (i == 2)
1954 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1955 else if (i == 3)
1956 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
1957 else if (i == 4)
1958 regulatory_hint(hw->wiphy, hwsim_alpha2s[2]);
1959 break;
1960 default:
1961 break;
1962 }
1963
1964 wiphy_debug(hw->wiphy, "hwaddr %pm registered\n",
1965 hw->wiphy->perm_addr);
1966
1967 data->debugfs = debugfs_create_dir("hwsim",
1968 hw->wiphy->debugfsdir);
1969 data->debugfs_ps = debugfs_create_file("ps", 0666,
1970 data->debugfs, data,
1971 &hwsim_fops_ps);
1972 data->debugfs_group = debugfs_create_file("group", 0666,
1973 data->debugfs, data,
1974 &hwsim_fops_group);
1975
1976 setup_timer(&data->beacon_timer, mac80211_hwsim_beacon,
1977 (unsigned long) hw);
1978
1979 list_add_tail(&data->list, &hwsim_radios);
1980 }
1981
1982 hwsim_mon = alloc_netdev(0, "hwsim%d", hwsim_mon_setup);
1983 if (hwsim_mon == NULL)
1984 goto failed;
1985
1986 rtnl_lock();
1987
1988 err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
1989 if (err < 0)
1990 goto failed_mon;
1991
1992
1993 err = register_netdevice(hwsim_mon);
1994 if (err < 0)
1995 goto failed_mon;
1996
1997 rtnl_unlock();
1998
1999 err = hwsim_init_netlink();
2000 if (err < 0)
2001 goto failed_nl;
2002
2003 return 0;
2004
2005 failed_nl:
2006 printk(KERN_DEBUG "mac_80211_hwsim: failed initializing netlink\n");
2007 return err;
2008
2009 failed_mon:
2010 rtnl_unlock();
2011 free_netdev(hwsim_mon);
2012 mac80211_hwsim_free();
2013 return err;
2014
2015 failed_hw:
2016 device_unregister(data->dev);
2017 failed_drvdata:
2018 ieee80211_free_hw(hw);
2019 failed:
2020 mac80211_hwsim_free();
2021 return err;
2022 }
2023
2024
2025 static void __exit exit_mac80211_hwsim(void)
2026 {
2027 printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
2028
2029 hwsim_exit_netlink();
2030
2031 mac80211_hwsim_free();
2032 unregister_netdev(hwsim_mon);
2033 }
2034
2035
2036 module_init(init_mac80211_hwsim);
2037 module_exit(exit_mac80211_hwsim);
Linux kernel - Deliverables
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