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mac80211: fix crash with single-queue drivers
[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(NLMSG_GOODSIZE, GFP_ATOMIC);
575 if (skb == NULL)
576 goto nla_put_failure;
577
578 msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
579 HWSIM_CMD_FRAME);
580 if (msg_head == NULL) {
581 printk(KERN_DEBUG "mac80211_hwsim: problem with msg_head\n");
582 goto nla_put_failure;
583 }
584
585 if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
586 sizeof(struct mac_address), data->addresses[1].addr))
587 goto nla_put_failure;
588
589 /* We get the skb->data */
590 if (nla_put(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data))
591 goto nla_put_failure;
592
593 /* We get the flags for this transmission, and we translate them to
594 wmediumd flags */
595
596 if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
597 hwsim_flags |= HWSIM_TX_CTL_REQ_TX_STATUS;
598
599 if (info->flags & IEEE80211_TX_CTL_NO_ACK)
600 hwsim_flags |= HWSIM_TX_CTL_NO_ACK;
601
602 if (nla_put_u32(skb, HWSIM_ATTR_FLAGS, hwsim_flags))
603 goto nla_put_failure;
604
605 /* We get the tx control (rate and retries) info*/
606
607 for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
608 tx_attempts[i].idx = info->status.rates[i].idx;
609 tx_attempts[i].count = info->status.rates[i].count;
610 }
611
612 if (nla_put(skb, HWSIM_ATTR_TX_INFO,
613 sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
614 tx_attempts))
615 goto nla_put_failure;
616
617 /* We create a cookie to identify this skb */
618 if (nla_put_u64(skb, HWSIM_ATTR_COOKIE, (unsigned long) my_skb))
619 goto nla_put_failure;
620
621 genlmsg_end(skb, msg_head);
622 genlmsg_unicast(&init_net, skb, dst_pid);
623
624 /* Enqueue the packet */
625 skb_queue_tail(&data->pending, my_skb);
626 return;
627
628 nla_put_failure:
629 printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
630 }
631
632 static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
633 struct sk_buff *skb)
634 {
635 struct mac80211_hwsim_data *data = hw->priv, *data2;
636 bool ack = false;
637 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
638 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
639 struct ieee80211_rx_status rx_status;
640 struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
641
642 if (data->idle) {
643 wiphy_debug(hw->wiphy, "Trying to TX when idle - reject\n");
644 return false;
645 }
646
647 memset(&rx_status, 0, sizeof(rx_status));
648 rx_status.flag |= RX_FLAG_MACTIME_MPDU;
649 rx_status.freq = data->channel->center_freq;
650 rx_status.band = data->channel->band;
651 rx_status.rate_idx = info->control.rates[0].idx;
652 if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
653 rx_status.flag |= RX_FLAG_HT;
654 if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
655 rx_status.flag |= RX_FLAG_40MHZ;
656 if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
657 rx_status.flag |= RX_FLAG_SHORT_GI;
658 /* TODO: simulate real signal strength (and optional packet loss) */
659 rx_status.signal = data->power_level - 50;
660
661 if (data->ps != PS_DISABLED)
662 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
663
664 /* release the skb's source info */
665 skb_orphan(skb);
666 skb_dst_drop(skb);
667 skb->mark = 0;
668 secpath_reset(skb);
669 nf_reset(skb);
670
671 /* Copy skb to all enabled radios that are on the current frequency */
672 spin_lock(&hwsim_radio_lock);
673 list_for_each_entry(data2, &hwsim_radios, list) {
674 struct sk_buff *nskb;
675 struct ieee80211_mgmt *mgmt;
676
677 if (data == data2)
678 continue;
679
680 if (data2->idle || !data2->started ||
681 !hwsim_ps_rx_ok(data2, skb) || !data2->channel ||
682 data->channel->center_freq != data2->channel->center_freq ||
683 !(data->group & data2->group))
684 continue;
685
686 nskb = skb_copy(skb, GFP_ATOMIC);
687 if (nskb == NULL)
688 continue;
689
690 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
691 ack = true;
692
693 /* set bcn timestamp relative to receiver mactime */
694 rx_status.mactime =
695 le64_to_cpu(__mac80211_hwsim_get_tsf(data2));
696 mgmt = (struct ieee80211_mgmt *) nskb->data;
697 if (ieee80211_is_beacon(mgmt->frame_control) ||
698 ieee80211_is_probe_resp(mgmt->frame_control))
699 mgmt->u.beacon.timestamp = cpu_to_le64(
700 rx_status.mactime +
701 (data->tsf_offset - data2->tsf_offset) +
702 24 * 8 * 10 / txrate->bitrate);
703
704 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
705 ieee80211_rx_irqsafe(data2->hw, nskb);
706 }
707 spin_unlock(&hwsim_radio_lock);
708
709 return ack;
710 }
711
712 static void mac80211_hwsim_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
713 {
714 bool ack;
715 struct ieee80211_tx_info *txi;
716 u32 _pid;
717
718 mac80211_hwsim_monitor_rx(hw, skb);
719
720 if (skb->len < 10) {
721 /* Should not happen; just a sanity check for addr1 use */
722 dev_kfree_skb(skb);
723 return;
724 }
725
726 /* wmediumd mode check */
727 _pid = ACCESS_ONCE(wmediumd_pid);
728
729 if (_pid)
730 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
731
732 /* NO wmediumd detected, perfect medium simulation */
733 ack = mac80211_hwsim_tx_frame_no_nl(hw, skb);
734
735 if (ack && skb->len >= 16) {
736 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
737 mac80211_hwsim_monitor_ack(hw, hdr->addr2);
738 }
739
740 txi = IEEE80211_SKB_CB(skb);
741
742 if (txi->control.vif)
743 hwsim_check_magic(txi->control.vif);
744 if (txi->control.sta)
745 hwsim_check_sta_magic(txi->control.sta);
746
747 ieee80211_tx_info_clear_status(txi);
748
749 /* frame was transmitted at most favorable rate at first attempt */
750 txi->control.rates[0].count = 1;
751 txi->control.rates[1].idx = -1;
752
753 if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
754 txi->flags |= IEEE80211_TX_STAT_ACK;
755 ieee80211_tx_status_irqsafe(hw, skb);
756 }
757
758
759 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
760 {
761 struct mac80211_hwsim_data *data = hw->priv;
762 wiphy_debug(hw->wiphy, "%s\n", __func__);
763 data->started = true;
764 return 0;
765 }
766
767
768 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
769 {
770 struct mac80211_hwsim_data *data = hw->priv;
771 data->started = false;
772 del_timer(&data->beacon_timer);
773 wiphy_debug(hw->wiphy, "%s\n", __func__);
774 }
775
776
777 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
778 struct ieee80211_vif *vif)
779 {
780 wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
781 __func__, ieee80211_vif_type_p2p(vif),
782 vif->addr);
783 hwsim_set_magic(vif);
784 return 0;
785 }
786
787
788 static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
789 struct ieee80211_vif *vif,
790 enum nl80211_iftype newtype,
791 bool newp2p)
792 {
793 newtype = ieee80211_iftype_p2p(newtype, newp2p);
794 wiphy_debug(hw->wiphy,
795 "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
796 __func__, ieee80211_vif_type_p2p(vif),
797 newtype, vif->addr);
798 hwsim_check_magic(vif);
799
800 return 0;
801 }
802
803 static void mac80211_hwsim_remove_interface(
804 struct ieee80211_hw *hw, struct ieee80211_vif *vif)
805 {
806 wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
807 __func__, ieee80211_vif_type_p2p(vif),
808 vif->addr);
809 hwsim_check_magic(vif);
810 hwsim_clear_magic(vif);
811 }
812
813
814 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
815 struct ieee80211_vif *vif)
816 {
817 struct ieee80211_hw *hw = arg;
818 struct sk_buff *skb;
819 struct ieee80211_tx_info *info;
820 u32 _pid;
821
822 hwsim_check_magic(vif);
823
824 if (vif->type != NL80211_IFTYPE_AP &&
825 vif->type != NL80211_IFTYPE_MESH_POINT &&
826 vif->type != NL80211_IFTYPE_ADHOC)
827 return;
828
829 skb = ieee80211_beacon_get(hw, vif);
830 if (skb == NULL)
831 return;
832 info = IEEE80211_SKB_CB(skb);
833
834 mac80211_hwsim_monitor_rx(hw, skb);
835
836 /* wmediumd mode check */
837 _pid = ACCESS_ONCE(wmediumd_pid);
838
839 if (_pid)
840 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
841
842 mac80211_hwsim_tx_frame_no_nl(hw, skb);
843 dev_kfree_skb(skb);
844 }
845
846
847 static void mac80211_hwsim_beacon(unsigned long arg)
848 {
849 struct ieee80211_hw *hw = (struct ieee80211_hw *) arg;
850 struct mac80211_hwsim_data *data = hw->priv;
851
852 if (!data->started)
853 return;
854
855 ieee80211_iterate_active_interfaces_atomic(
856 hw, mac80211_hwsim_beacon_tx, hw);
857
858 data->beacon_timer.expires = jiffies + data->beacon_int;
859 add_timer(&data->beacon_timer);
860 }
861
862 static const char *hwsim_chantypes[] = {
863 [NL80211_CHAN_NO_HT] = "noht",
864 [NL80211_CHAN_HT20] = "ht20",
865 [NL80211_CHAN_HT40MINUS] = "ht40-",
866 [NL80211_CHAN_HT40PLUS] = "ht40+",
867 };
868
869 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
870 {
871 struct mac80211_hwsim_data *data = hw->priv;
872 struct ieee80211_conf *conf = &hw->conf;
873 static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
874 [IEEE80211_SMPS_AUTOMATIC] = "auto",
875 [IEEE80211_SMPS_OFF] = "off",
876 [IEEE80211_SMPS_STATIC] = "static",
877 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
878 };
879
880 wiphy_debug(hw->wiphy,
881 "%s (freq=%d/%s idle=%d ps=%d smps=%s)\n",
882 __func__,
883 conf->channel->center_freq,
884 hwsim_chantypes[conf->channel_type],
885 !!(conf->flags & IEEE80211_CONF_IDLE),
886 !!(conf->flags & IEEE80211_CONF_PS),
887 smps_modes[conf->smps_mode]);
888
889 data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
890
891 data->channel = conf->channel;
892 data->power_level = conf->power_level;
893 if (!data->started || !data->beacon_int)
894 del_timer(&data->beacon_timer);
895 else
896 mod_timer(&data->beacon_timer, jiffies + data->beacon_int);
897
898 return 0;
899 }
900
901
902 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
903 unsigned int changed_flags,
904 unsigned int *total_flags,u64 multicast)
905 {
906 struct mac80211_hwsim_data *data = hw->priv;
907
908 wiphy_debug(hw->wiphy, "%s\n", __func__);
909
910 data->rx_filter = 0;
911 if (*total_flags & FIF_PROMISC_IN_BSS)
912 data->rx_filter |= FIF_PROMISC_IN_BSS;
913 if (*total_flags & FIF_ALLMULTI)
914 data->rx_filter |= FIF_ALLMULTI;
915
916 *total_flags = data->rx_filter;
917 }
918
919 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
920 struct ieee80211_vif *vif,
921 struct ieee80211_bss_conf *info,
922 u32 changed)
923 {
924 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
925 struct mac80211_hwsim_data *data = hw->priv;
926
927 hwsim_check_magic(vif);
928
929 wiphy_debug(hw->wiphy, "%s(changed=0x%x)\n", __func__, changed);
930
931 if (changed & BSS_CHANGED_BSSID) {
932 wiphy_debug(hw->wiphy, "%s: BSSID changed: %pM\n",
933 __func__, info->bssid);
934 memcpy(vp->bssid, info->bssid, ETH_ALEN);
935 }
936
937 if (changed & BSS_CHANGED_ASSOC) {
938 wiphy_debug(hw->wiphy, " ASSOC: assoc=%d aid=%d\n",
939 info->assoc, info->aid);
940 vp->assoc = info->assoc;
941 vp->aid = info->aid;
942 }
943
944 if (changed & BSS_CHANGED_BEACON_INT) {
945 wiphy_debug(hw->wiphy, " BCNINT: %d\n", info->beacon_int);
946 data->beacon_int = 1024 * info->beacon_int / 1000 * HZ / 1000;
947 if (WARN_ON(!data->beacon_int))
948 data->beacon_int = 1;
949 if (data->started)
950 mod_timer(&data->beacon_timer,
951 jiffies + data->beacon_int);
952 }
953
954 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
955 wiphy_debug(hw->wiphy, " ERP_CTS_PROT: %d\n",
956 info->use_cts_prot);
957 }
958
959 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
960 wiphy_debug(hw->wiphy, " ERP_PREAMBLE: %d\n",
961 info->use_short_preamble);
962 }
963
964 if (changed & BSS_CHANGED_ERP_SLOT) {
965 wiphy_debug(hw->wiphy, " ERP_SLOT: %d\n", info->use_short_slot);
966 }
967
968 if (changed & BSS_CHANGED_HT) {
969 wiphy_debug(hw->wiphy, " HT: op_mode=0x%x, chantype=%s\n",
970 info->ht_operation_mode,
971 hwsim_chantypes[info->channel_type]);
972 }
973
974 if (changed & BSS_CHANGED_BASIC_RATES) {
975 wiphy_debug(hw->wiphy, " BASIC_RATES: 0x%llx\n",
976 (unsigned long long) info->basic_rates);
977 }
978 }
979
980 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
981 struct ieee80211_vif *vif,
982 struct ieee80211_sta *sta)
983 {
984 hwsim_check_magic(vif);
985 hwsim_set_sta_magic(sta);
986
987 return 0;
988 }
989
990 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
991 struct ieee80211_vif *vif,
992 struct ieee80211_sta *sta)
993 {
994 hwsim_check_magic(vif);
995 hwsim_clear_sta_magic(sta);
996
997 return 0;
998 }
999
1000 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
1001 struct ieee80211_vif *vif,
1002 enum sta_notify_cmd cmd,
1003 struct ieee80211_sta *sta)
1004 {
1005 hwsim_check_magic(vif);
1006
1007 switch (cmd) {
1008 case STA_NOTIFY_SLEEP:
1009 case STA_NOTIFY_AWAKE:
1010 /* TODO: make good use of these flags */
1011 break;
1012 default:
1013 WARN(1, "Invalid sta notify: %d\n", cmd);
1014 break;
1015 }
1016 }
1017
1018 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
1019 struct ieee80211_sta *sta,
1020 bool set)
1021 {
1022 hwsim_check_sta_magic(sta);
1023 return 0;
1024 }
1025
1026 static int mac80211_hwsim_conf_tx(
1027 struct ieee80211_hw *hw,
1028 struct ieee80211_vif *vif, u16 queue,
1029 const struct ieee80211_tx_queue_params *params)
1030 {
1031 wiphy_debug(hw->wiphy,
1032 "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
1033 __func__, queue,
1034 params->txop, params->cw_min,
1035 params->cw_max, params->aifs);
1036 return 0;
1037 }
1038
1039 static int mac80211_hwsim_get_survey(
1040 struct ieee80211_hw *hw, int idx,
1041 struct survey_info *survey)
1042 {
1043 struct ieee80211_conf *conf = &hw->conf;
1044
1045 wiphy_debug(hw->wiphy, "%s (idx=%d)\n", __func__, idx);
1046
1047 if (idx != 0)
1048 return -ENOENT;
1049
1050 /* Current channel */
1051 survey->channel = conf->channel;
1052
1053 /*
1054 * Magically conjured noise level --- this is only ok for simulated hardware.
1055 *
1056 * A real driver which cannot determine the real channel noise MUST NOT
1057 * report any noise, especially not a magically conjured one :-)
1058 */
1059 survey->filled = SURVEY_INFO_NOISE_DBM;
1060 survey->noise = -92;
1061
1062 return 0;
1063 }
1064
1065 #ifdef CONFIG_NL80211_TESTMODE
1066 /*
1067 * This section contains example code for using netlink
1068 * attributes with the testmode command in nl80211.
1069 */
1070
1071 /* These enums need to be kept in sync with userspace */
1072 enum hwsim_testmode_attr {
1073 __HWSIM_TM_ATTR_INVALID = 0,
1074 HWSIM_TM_ATTR_CMD = 1,
1075 HWSIM_TM_ATTR_PS = 2,
1076
1077 /* keep last */
1078 __HWSIM_TM_ATTR_AFTER_LAST,
1079 HWSIM_TM_ATTR_MAX = __HWSIM_TM_ATTR_AFTER_LAST - 1
1080 };
1081
1082 enum hwsim_testmode_cmd {
1083 HWSIM_TM_CMD_SET_PS = 0,
1084 HWSIM_TM_CMD_GET_PS = 1,
1085 };
1086
1087 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
1088 [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
1089 [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
1090 };
1091
1092 static int hwsim_fops_ps_write(void *dat, u64 val);
1093
1094 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
1095 void *data, int len)
1096 {
1097 struct mac80211_hwsim_data *hwsim = hw->priv;
1098 struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
1099 struct sk_buff *skb;
1100 int err, ps;
1101
1102 err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
1103 hwsim_testmode_policy);
1104 if (err)
1105 return err;
1106
1107 if (!tb[HWSIM_TM_ATTR_CMD])
1108 return -EINVAL;
1109
1110 switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
1111 case HWSIM_TM_CMD_SET_PS:
1112 if (!tb[HWSIM_TM_ATTR_PS])
1113 return -EINVAL;
1114 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
1115 return hwsim_fops_ps_write(hwsim, ps);
1116 case HWSIM_TM_CMD_GET_PS:
1117 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
1118 nla_total_size(sizeof(u32)));
1119 if (!skb)
1120 return -ENOMEM;
1121 if (nla_put_u32(skb, HWSIM_TM_ATTR_PS, hwsim->ps))
1122 goto nla_put_failure;
1123 return cfg80211_testmode_reply(skb);
1124 default:
1125 return -EOPNOTSUPP;
1126 }
1127
1128 nla_put_failure:
1129 kfree_skb(skb);
1130 return -ENOBUFS;
1131 }
1132 #endif
1133
1134 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
1135 struct ieee80211_vif *vif,
1136 enum ieee80211_ampdu_mlme_action action,
1137 struct ieee80211_sta *sta, u16 tid, u16 *ssn,
1138 u8 buf_size)
1139 {
1140 switch (action) {
1141 case IEEE80211_AMPDU_TX_START:
1142 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1143 break;
1144 case IEEE80211_AMPDU_TX_STOP:
1145 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1146 break;
1147 case IEEE80211_AMPDU_TX_OPERATIONAL:
1148 break;
1149 case IEEE80211_AMPDU_RX_START:
1150 case IEEE80211_AMPDU_RX_STOP:
1151 break;
1152 default:
1153 return -EOPNOTSUPP;
1154 }
1155
1156 return 0;
1157 }
1158
1159 static void mac80211_hwsim_flush(struct ieee80211_hw *hw, bool drop)
1160 {
1161 /* Not implemented, queues only on kernel side */
1162 }
1163
1164 struct hw_scan_done {
1165 struct delayed_work w;
1166 struct ieee80211_hw *hw;
1167 };
1168
1169 static void hw_scan_done(struct work_struct *work)
1170 {
1171 struct hw_scan_done *hsd =
1172 container_of(work, struct hw_scan_done, w.work);
1173
1174 ieee80211_scan_completed(hsd->hw, false);
1175 kfree(hsd);
1176 }
1177
1178 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
1179 struct ieee80211_vif *vif,
1180 struct cfg80211_scan_request *req)
1181 {
1182 struct hw_scan_done *hsd = kzalloc(sizeof(*hsd), GFP_KERNEL);
1183 int i;
1184
1185 if (!hsd)
1186 return -ENOMEM;
1187
1188 hsd->hw = hw;
1189 INIT_DELAYED_WORK(&hsd->w, hw_scan_done);
1190
1191 printk(KERN_DEBUG "hwsim hw_scan request\n");
1192 for (i = 0; i < req->n_channels; i++)
1193 printk(KERN_DEBUG "hwsim hw_scan freq %d\n",
1194 req->channels[i]->center_freq);
1195 print_hex_dump(KERN_DEBUG, "scan IEs: ", DUMP_PREFIX_OFFSET,
1196 16, 1, req->ie, req->ie_len, 1);
1197
1198 ieee80211_queue_delayed_work(hw, &hsd->w, 2 * HZ);
1199
1200 return 0;
1201 }
1202
1203 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw)
1204 {
1205 struct mac80211_hwsim_data *hwsim = hw->priv;
1206
1207 mutex_lock(&hwsim->mutex);
1208
1209 if (hwsim->scanning) {
1210 printk(KERN_DEBUG "two hwsim sw_scans detected!\n");
1211 goto out;
1212 }
1213
1214 printk(KERN_DEBUG "hwsim sw_scan request, prepping stuff\n");
1215 hwsim->scanning = true;
1216
1217 out:
1218 mutex_unlock(&hwsim->mutex);
1219 }
1220
1221 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw)
1222 {
1223 struct mac80211_hwsim_data *hwsim = hw->priv;
1224
1225 mutex_lock(&hwsim->mutex);
1226
1227 printk(KERN_DEBUG "hwsim sw_scan_complete\n");
1228 hwsim->scanning = false;
1229
1230 mutex_unlock(&hwsim->mutex);
1231 }
1232
1233 static struct ieee80211_ops mac80211_hwsim_ops =
1234 {
1235 .tx = mac80211_hwsim_tx,
1236 .start = mac80211_hwsim_start,
1237 .stop = mac80211_hwsim_stop,
1238 .add_interface = mac80211_hwsim_add_interface,
1239 .change_interface = mac80211_hwsim_change_interface,
1240 .remove_interface = mac80211_hwsim_remove_interface,
1241 .config = mac80211_hwsim_config,
1242 .configure_filter = mac80211_hwsim_configure_filter,
1243 .bss_info_changed = mac80211_hwsim_bss_info_changed,
1244 .sta_add = mac80211_hwsim_sta_add,
1245 .sta_remove = mac80211_hwsim_sta_remove,
1246 .sta_notify = mac80211_hwsim_sta_notify,
1247 .set_tim = mac80211_hwsim_set_tim,
1248 .conf_tx = mac80211_hwsim_conf_tx,
1249 .get_survey = mac80211_hwsim_get_survey,
1250 CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)
1251 .ampdu_action = mac80211_hwsim_ampdu_action,
1252 .sw_scan_start = mac80211_hwsim_sw_scan,
1253 .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
1254 .flush = mac80211_hwsim_flush,
1255 .get_tsf = mac80211_hwsim_get_tsf,
1256 .set_tsf = mac80211_hwsim_set_tsf,
1257 };
1258
1259
1260 static void mac80211_hwsim_free(void)
1261 {
1262 struct list_head tmplist, *i, *tmp;
1263 struct mac80211_hwsim_data *data, *tmpdata;
1264
1265 INIT_LIST_HEAD(&tmplist);
1266
1267 spin_lock_bh(&hwsim_radio_lock);
1268 list_for_each_safe(i, tmp, &hwsim_radios)
1269 list_move(i, &tmplist);
1270 spin_unlock_bh(&hwsim_radio_lock);
1271
1272 list_for_each_entry_safe(data, tmpdata, &tmplist, list) {
1273 debugfs_remove(data->debugfs_group);
1274 debugfs_remove(data->debugfs_ps);
1275 debugfs_remove(data->debugfs);
1276 ieee80211_unregister_hw(data->hw);
1277 device_unregister(data->dev);
1278 ieee80211_free_hw(data->hw);
1279 }
1280 class_destroy(hwsim_class);
1281 }
1282
1283
1284 static struct device_driver mac80211_hwsim_driver = {
1285 .name = "mac80211_hwsim"
1286 };
1287
1288 static const struct net_device_ops hwsim_netdev_ops = {
1289 .ndo_start_xmit = hwsim_mon_xmit,
1290 .ndo_change_mtu = eth_change_mtu,
1291 .ndo_set_mac_address = eth_mac_addr,
1292 .ndo_validate_addr = eth_validate_addr,
1293 };
1294
1295 static void hwsim_mon_setup(struct net_device *dev)
1296 {
1297 dev->netdev_ops = &hwsim_netdev_ops;
1298 dev->destructor = free_netdev;
1299 ether_setup(dev);
1300 dev->tx_queue_len = 0;
1301 dev->type = ARPHRD_IEEE80211_RADIOTAP;
1302 memset(dev->dev_addr, 0, ETH_ALEN);
1303 dev->dev_addr[0] = 0x12;
1304 }
1305
1306
1307 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
1308 {
1309 struct mac80211_hwsim_data *data = dat;
1310 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1311 struct sk_buff *skb;
1312 struct ieee80211_pspoll *pspoll;
1313 u32 _pid;
1314
1315 if (!vp->assoc)
1316 return;
1317
1318 wiphy_debug(data->hw->wiphy,
1319 "%s: send PS-Poll to %pM for aid %d\n",
1320 __func__, vp->bssid, vp->aid);
1321
1322 skb = dev_alloc_skb(sizeof(*pspoll));
1323 if (!skb)
1324 return;
1325 pspoll = (void *) skb_put(skb, sizeof(*pspoll));
1326 pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
1327 IEEE80211_STYPE_PSPOLL |
1328 IEEE80211_FCTL_PM);
1329 pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
1330 memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
1331 memcpy(pspoll->ta, mac, ETH_ALEN);
1332
1333 /* wmediumd mode check */
1334 _pid = ACCESS_ONCE(wmediumd_pid);
1335
1336 if (_pid)
1337 return mac80211_hwsim_tx_frame_nl(data->hw, skb, _pid);
1338
1339 if (!mac80211_hwsim_tx_frame_no_nl(data->hw, skb))
1340 printk(KERN_DEBUG "%s: PS-poll frame not ack'ed\n", __func__);
1341 dev_kfree_skb(skb);
1342 }
1343
1344
1345 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
1346 struct ieee80211_vif *vif, int ps)
1347 {
1348 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1349 struct sk_buff *skb;
1350 struct ieee80211_hdr *hdr;
1351 u32 _pid;
1352
1353 if (!vp->assoc)
1354 return;
1355
1356 wiphy_debug(data->hw->wiphy,
1357 "%s: send data::nullfunc to %pM ps=%d\n",
1358 __func__, vp->bssid, ps);
1359
1360 skb = dev_alloc_skb(sizeof(*hdr));
1361 if (!skb)
1362 return;
1363 hdr = (void *) skb_put(skb, sizeof(*hdr) - ETH_ALEN);
1364 hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
1365 IEEE80211_STYPE_NULLFUNC |
1366 (ps ? IEEE80211_FCTL_PM : 0));
1367 hdr->duration_id = cpu_to_le16(0);
1368 memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
1369 memcpy(hdr->addr2, mac, ETH_ALEN);
1370 memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
1371
1372 /* wmediumd mode check */
1373 _pid = ACCESS_ONCE(wmediumd_pid);
1374
1375 if (_pid)
1376 return mac80211_hwsim_tx_frame_nl(data->hw, skb, _pid);
1377
1378 if (!mac80211_hwsim_tx_frame_no_nl(data->hw, skb))
1379 printk(KERN_DEBUG "%s: nullfunc frame not ack'ed\n", __func__);
1380 dev_kfree_skb(skb);
1381 }
1382
1383
1384 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
1385 struct ieee80211_vif *vif)
1386 {
1387 struct mac80211_hwsim_data *data = dat;
1388 hwsim_send_nullfunc(data, mac, vif, 1);
1389 }
1390
1391
1392 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
1393 struct ieee80211_vif *vif)
1394 {
1395 struct mac80211_hwsim_data *data = dat;
1396 hwsim_send_nullfunc(data, mac, vif, 0);
1397 }
1398
1399
1400 static int hwsim_fops_ps_read(void *dat, u64 *val)
1401 {
1402 struct mac80211_hwsim_data *data = dat;
1403 *val = data->ps;
1404 return 0;
1405 }
1406
1407 static int hwsim_fops_ps_write(void *dat, u64 val)
1408 {
1409 struct mac80211_hwsim_data *data = dat;
1410 enum ps_mode old_ps;
1411
1412 if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
1413 val != PS_MANUAL_POLL)
1414 return -EINVAL;
1415
1416 old_ps = data->ps;
1417 data->ps = val;
1418
1419 if (val == PS_MANUAL_POLL) {
1420 ieee80211_iterate_active_interfaces(data->hw,
1421 hwsim_send_ps_poll, data);
1422 data->ps_poll_pending = true;
1423 } else if (old_ps == PS_DISABLED && val != PS_DISABLED) {
1424 ieee80211_iterate_active_interfaces(data->hw,
1425 hwsim_send_nullfunc_ps,
1426 data);
1427 } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
1428 ieee80211_iterate_active_interfaces(data->hw,
1429 hwsim_send_nullfunc_no_ps,
1430 data);
1431 }
1432
1433 return 0;
1434 }
1435
1436 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
1437 "%llu\n");
1438
1439
1440 static int hwsim_fops_group_read(void *dat, u64 *val)
1441 {
1442 struct mac80211_hwsim_data *data = dat;
1443 *val = data->group;
1444 return 0;
1445 }
1446
1447 static int hwsim_fops_group_write(void *dat, u64 val)
1448 {
1449 struct mac80211_hwsim_data *data = dat;
1450 data->group = val;
1451 return 0;
1452 }
1453
1454 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
1455 hwsim_fops_group_read, hwsim_fops_group_write,
1456 "%llx\n");
1457
1458 static struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(
1459 struct mac_address *addr)
1460 {
1461 struct mac80211_hwsim_data *data;
1462 bool _found = false;
1463
1464 spin_lock_bh(&hwsim_radio_lock);
1465 list_for_each_entry(data, &hwsim_radios, list) {
1466 if (memcmp(data->addresses[1].addr, addr,
1467 sizeof(struct mac_address)) == 0) {
1468 _found = true;
1469 break;
1470 }
1471 }
1472 spin_unlock_bh(&hwsim_radio_lock);
1473
1474 if (!_found)
1475 return NULL;
1476
1477 return data;
1478 }
1479
1480 static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
1481 struct genl_info *info)
1482 {
1483
1484 struct ieee80211_hdr *hdr;
1485 struct mac80211_hwsim_data *data2;
1486 struct ieee80211_tx_info *txi;
1487 struct hwsim_tx_rate *tx_attempts;
1488 unsigned long ret_skb_ptr;
1489 struct sk_buff *skb, *tmp;
1490 struct mac_address *src;
1491 unsigned int hwsim_flags;
1492
1493 int i;
1494 bool found = false;
1495
1496 if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
1497 !info->attrs[HWSIM_ATTR_FLAGS] ||
1498 !info->attrs[HWSIM_ATTR_COOKIE] ||
1499 !info->attrs[HWSIM_ATTR_TX_INFO])
1500 goto out;
1501
1502 src = (struct mac_address *)nla_data(
1503 info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
1504 hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
1505
1506 ret_skb_ptr = nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
1507
1508 data2 = get_hwsim_data_ref_from_addr(src);
1509
1510 if (data2 == NULL)
1511 goto out;
1512
1513 /* look for the skb matching the cookie passed back from user */
1514 skb_queue_walk_safe(&data2->pending, skb, tmp) {
1515 if ((unsigned long)skb == ret_skb_ptr) {
1516 skb_unlink(skb, &data2->pending);
1517 found = true;
1518 break;
1519 }
1520 }
1521
1522 /* not found */
1523 if (!found)
1524 goto out;
1525
1526 /* Tx info received because the frame was broadcasted on user space,
1527 so we get all the necessary info: tx attempts and skb control buff */
1528
1529 tx_attempts = (struct hwsim_tx_rate *)nla_data(
1530 info->attrs[HWSIM_ATTR_TX_INFO]);
1531
1532 /* now send back TX status */
1533 txi = IEEE80211_SKB_CB(skb);
1534
1535 if (txi->control.vif)
1536 hwsim_check_magic(txi->control.vif);
1537 if (txi->control.sta)
1538 hwsim_check_sta_magic(txi->control.sta);
1539
1540 ieee80211_tx_info_clear_status(txi);
1541
1542 for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
1543 txi->status.rates[i].idx = tx_attempts[i].idx;
1544 txi->status.rates[i].count = tx_attempts[i].count;
1545 /*txi->status.rates[i].flags = 0;*/
1546 }
1547
1548 txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
1549
1550 if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
1551 (hwsim_flags & HWSIM_TX_STAT_ACK)) {
1552 if (skb->len >= 16) {
1553 hdr = (struct ieee80211_hdr *) skb->data;
1554 mac80211_hwsim_monitor_ack(data2->hw, hdr->addr2);
1555 }
1556 txi->flags |= IEEE80211_TX_STAT_ACK;
1557 }
1558 ieee80211_tx_status_irqsafe(data2->hw, skb);
1559 return 0;
1560 out:
1561 return -EINVAL;
1562
1563 }
1564
1565 static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
1566 struct genl_info *info)
1567 {
1568
1569 struct mac80211_hwsim_data *data2;
1570 struct ieee80211_rx_status rx_status;
1571 struct mac_address *dst;
1572 int frame_data_len;
1573 char *frame_data;
1574 struct sk_buff *skb = NULL;
1575
1576 if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
1577 !info->attrs[HWSIM_ATTR_FRAME] ||
1578 !info->attrs[HWSIM_ATTR_RX_RATE] ||
1579 !info->attrs[HWSIM_ATTR_SIGNAL])
1580 goto out;
1581
1582 dst = (struct mac_address *)nla_data(
1583 info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
1584
1585 frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
1586 frame_data = (char *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
1587
1588 /* Allocate new skb here */
1589 skb = alloc_skb(frame_data_len, GFP_KERNEL);
1590 if (skb == NULL)
1591 goto err;
1592
1593 if (frame_data_len <= IEEE80211_MAX_DATA_LEN) {
1594 /* Copy the data */
1595 memcpy(skb_put(skb, frame_data_len), frame_data,
1596 frame_data_len);
1597 } else
1598 goto err;
1599
1600 data2 = get_hwsim_data_ref_from_addr(dst);
1601
1602 if (data2 == NULL)
1603 goto out;
1604
1605 /* check if radio is configured properly */
1606
1607 if (data2->idle || !data2->started || !data2->channel)
1608 goto out;
1609
1610 /*A frame is received from user space*/
1611 memset(&rx_status, 0, sizeof(rx_status));
1612 rx_status.freq = data2->channel->center_freq;
1613 rx_status.band = data2->channel->band;
1614 rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
1615 rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
1616
1617 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
1618 ieee80211_rx_irqsafe(data2->hw, skb);
1619
1620 return 0;
1621 err:
1622 printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
1623 goto out;
1624 out:
1625 dev_kfree_skb(skb);
1626 return -EINVAL;
1627 }
1628
1629 static int hwsim_register_received_nl(struct sk_buff *skb_2,
1630 struct genl_info *info)
1631 {
1632 if (info == NULL)
1633 goto out;
1634
1635 wmediumd_pid = info->snd_pid;
1636
1637 printk(KERN_DEBUG "mac80211_hwsim: received a REGISTER, "
1638 "switching to wmediumd mode with pid %d\n", info->snd_pid);
1639
1640 return 0;
1641 out:
1642 printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
1643 return -EINVAL;
1644 }
1645
1646 /* Generic Netlink operations array */
1647 static struct genl_ops hwsim_ops[] = {
1648 {
1649 .cmd = HWSIM_CMD_REGISTER,
1650 .policy = hwsim_genl_policy,
1651 .doit = hwsim_register_received_nl,
1652 .flags = GENL_ADMIN_PERM,
1653 },
1654 {
1655 .cmd = HWSIM_CMD_FRAME,
1656 .policy = hwsim_genl_policy,
1657 .doit = hwsim_cloned_frame_received_nl,
1658 },
1659 {
1660 .cmd = HWSIM_CMD_TX_INFO_FRAME,
1661 .policy = hwsim_genl_policy,
1662 .doit = hwsim_tx_info_frame_received_nl,
1663 },
1664 };
1665
1666 static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
1667 unsigned long state,
1668 void *_notify)
1669 {
1670 struct netlink_notify *notify = _notify;
1671
1672 if (state != NETLINK_URELEASE)
1673 return NOTIFY_DONE;
1674
1675 if (notify->pid == wmediumd_pid) {
1676 printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
1677 " socket, switching to perfect channel medium\n");
1678 wmediumd_pid = 0;
1679 }
1680 return NOTIFY_DONE;
1681
1682 }
1683
1684 static struct notifier_block hwsim_netlink_notifier = {
1685 .notifier_call = mac80211_hwsim_netlink_notify,
1686 };
1687
1688 static int hwsim_init_netlink(void)
1689 {
1690 int rc;
1691 printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
1692
1693 rc = genl_register_family_with_ops(&hwsim_genl_family,
1694 hwsim_ops, ARRAY_SIZE(hwsim_ops));
1695 if (rc)
1696 goto failure;
1697
1698 rc = netlink_register_notifier(&hwsim_netlink_notifier);
1699 if (rc)
1700 goto failure;
1701
1702 return 0;
1703
1704 failure:
1705 printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
1706 return -EINVAL;
1707 }
1708
1709 static void hwsim_exit_netlink(void)
1710 {
1711 int ret;
1712
1713 printk(KERN_INFO "mac80211_hwsim: closing netlink\n");
1714 /* unregister the notifier */
1715 netlink_unregister_notifier(&hwsim_netlink_notifier);
1716 /* unregister the family */
1717 ret = genl_unregister_family(&hwsim_genl_family);
1718 if (ret)
1719 printk(KERN_DEBUG "mac80211_hwsim: "
1720 "unregister family %i\n", ret);
1721 }
1722
1723 static const struct ieee80211_iface_limit hwsim_if_limits[] = {
1724 { .max = 1, .types = BIT(NL80211_IFTYPE_ADHOC) },
1725 { .max = 2048, .types = BIT(NL80211_IFTYPE_STATION) |
1726 BIT(NL80211_IFTYPE_P2P_CLIENT) |
1727 #ifdef CONFIG_MAC80211_MESH
1728 BIT(NL80211_IFTYPE_MESH_POINT) |
1729 #endif
1730 BIT(NL80211_IFTYPE_AP) |
1731 BIT(NL80211_IFTYPE_P2P_GO) },
1732 };
1733
1734 static const struct ieee80211_iface_combination hwsim_if_comb = {
1735 .limits = hwsim_if_limits,
1736 .n_limits = ARRAY_SIZE(hwsim_if_limits),
1737 .max_interfaces = 2048,
1738 .num_different_channels = 1,
1739 };
1740
1741 static int __init init_mac80211_hwsim(void)
1742 {
1743 int i, err = 0;
1744 u8 addr[ETH_ALEN];
1745 struct mac80211_hwsim_data *data;
1746 struct ieee80211_hw *hw;
1747 enum ieee80211_band band;
1748
1749 if (radios < 1 || radios > 100)
1750 return -EINVAL;
1751
1752 if (fake_hw_scan) {
1753 mac80211_hwsim_ops.hw_scan = mac80211_hwsim_hw_scan;
1754 mac80211_hwsim_ops.sw_scan_start = NULL;
1755 mac80211_hwsim_ops.sw_scan_complete = NULL;
1756 }
1757
1758 spin_lock_init(&hwsim_radio_lock);
1759 INIT_LIST_HEAD(&hwsim_radios);
1760
1761 hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
1762 if (IS_ERR(hwsim_class))
1763 return PTR_ERR(hwsim_class);
1764
1765 memset(addr, 0, ETH_ALEN);
1766 addr[0] = 0x02;
1767
1768 for (i = 0; i < radios; i++) {
1769 printk(KERN_DEBUG "mac80211_hwsim: Initializing radio %d\n",
1770 i);
1771 hw = ieee80211_alloc_hw(sizeof(*data), &mac80211_hwsim_ops);
1772 if (!hw) {
1773 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw "
1774 "failed\n");
1775 err = -ENOMEM;
1776 goto failed;
1777 }
1778 data = hw->priv;
1779 data->hw = hw;
1780
1781 data->dev = device_create(hwsim_class, NULL, 0, hw,
1782 "hwsim%d", i);
1783 if (IS_ERR(data->dev)) {
1784 printk(KERN_DEBUG
1785 "mac80211_hwsim: device_create "
1786 "failed (%ld)\n", PTR_ERR(data->dev));
1787 err = -ENOMEM;
1788 goto failed_drvdata;
1789 }
1790 data->dev->driver = &mac80211_hwsim_driver;
1791 skb_queue_head_init(&data->pending);
1792
1793 SET_IEEE80211_DEV(hw, data->dev);
1794 addr[3] = i >> 8;
1795 addr[4] = i;
1796 memcpy(data->addresses[0].addr, addr, ETH_ALEN);
1797 memcpy(data->addresses[1].addr, addr, ETH_ALEN);
1798 data->addresses[1].addr[0] |= 0x40;
1799 hw->wiphy->n_addresses = 2;
1800 hw->wiphy->addresses = data->addresses;
1801
1802 hw->wiphy->iface_combinations = &hwsim_if_comb;
1803 hw->wiphy->n_iface_combinations = 1;
1804
1805 if (fake_hw_scan) {
1806 hw->wiphy->max_scan_ssids = 255;
1807 hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
1808 }
1809
1810 hw->channel_change_time = 1;
1811 hw->queues = 4;
1812 hw->wiphy->interface_modes =
1813 BIT(NL80211_IFTYPE_STATION) |
1814 BIT(NL80211_IFTYPE_AP) |
1815 BIT(NL80211_IFTYPE_P2P_CLIENT) |
1816 BIT(NL80211_IFTYPE_P2P_GO) |
1817 BIT(NL80211_IFTYPE_ADHOC) |
1818 BIT(NL80211_IFTYPE_MESH_POINT);
1819
1820 hw->flags = IEEE80211_HW_MFP_CAPABLE |
1821 IEEE80211_HW_SIGNAL_DBM |
1822 IEEE80211_HW_SUPPORTS_STATIC_SMPS |
1823 IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
1824 IEEE80211_HW_AMPDU_AGGREGATION |
1825 IEEE80211_HW_WANT_MONITOR_VIF;
1826
1827 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS |
1828 WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL;
1829
1830 /* ask mac80211 to reserve space for magic */
1831 hw->vif_data_size = sizeof(struct hwsim_vif_priv);
1832 hw->sta_data_size = sizeof(struct hwsim_sta_priv);
1833
1834 memcpy(data->channels_2ghz, hwsim_channels_2ghz,
1835 sizeof(hwsim_channels_2ghz));
1836 memcpy(data->channels_5ghz, hwsim_channels_5ghz,
1837 sizeof(hwsim_channels_5ghz));
1838 memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
1839
1840 for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) {
1841 struct ieee80211_supported_band *sband = &data->bands[band];
1842 switch (band) {
1843 case IEEE80211_BAND_2GHZ:
1844 sband->channels = data->channels_2ghz;
1845 sband->n_channels =
1846 ARRAY_SIZE(hwsim_channels_2ghz);
1847 sband->bitrates = data->rates;
1848 sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
1849 break;
1850 case IEEE80211_BAND_5GHZ:
1851 sband->channels = data->channels_5ghz;
1852 sband->n_channels =
1853 ARRAY_SIZE(hwsim_channels_5ghz);
1854 sband->bitrates = data->rates + 4;
1855 sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
1856 break;
1857 default:
1858 continue;
1859 }
1860
1861 sband->ht_cap.ht_supported = true;
1862 sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
1863 IEEE80211_HT_CAP_GRN_FLD |
1864 IEEE80211_HT_CAP_SGI_40 |
1865 IEEE80211_HT_CAP_DSSSCCK40;
1866 sband->ht_cap.ampdu_factor = 0x3;
1867 sband->ht_cap.ampdu_density = 0x6;
1868 memset(&sband->ht_cap.mcs, 0,
1869 sizeof(sband->ht_cap.mcs));
1870 sband->ht_cap.mcs.rx_mask[0] = 0xff;
1871 sband->ht_cap.mcs.rx_mask[1] = 0xff;
1872 sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
1873
1874 hw->wiphy->bands[band] = sband;
1875 }
1876 /* By default all radios are belonging to the first group */
1877 data->group = 1;
1878 mutex_init(&data->mutex);
1879
1880 /* Enable frame retransmissions for lossy channels */
1881 hw->max_rates = 4;
1882 hw->max_rate_tries = 11;
1883
1884 /* Work to be done prior to ieee80211_register_hw() */
1885 switch (regtest) {
1886 case HWSIM_REGTEST_DISABLED:
1887 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
1888 case HWSIM_REGTEST_DRIVER_REG_ALL:
1889 case HWSIM_REGTEST_DIFF_COUNTRY:
1890 /*
1891 * Nothing to be done for driver regulatory domain
1892 * hints prior to ieee80211_register_hw()
1893 */
1894 break;
1895 case HWSIM_REGTEST_WORLD_ROAM:
1896 if (i == 0) {
1897 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1898 wiphy_apply_custom_regulatory(hw->wiphy,
1899 &hwsim_world_regdom_custom_01);
1900 }
1901 break;
1902 case HWSIM_REGTEST_CUSTOM_WORLD:
1903 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1904 wiphy_apply_custom_regulatory(hw->wiphy,
1905 &hwsim_world_regdom_custom_01);
1906 break;
1907 case HWSIM_REGTEST_CUSTOM_WORLD_2:
1908 if (i == 0) {
1909 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1910 wiphy_apply_custom_regulatory(hw->wiphy,
1911 &hwsim_world_regdom_custom_01);
1912 } else if (i == 1) {
1913 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1914 wiphy_apply_custom_regulatory(hw->wiphy,
1915 &hwsim_world_regdom_custom_02);
1916 }
1917 break;
1918 case HWSIM_REGTEST_STRICT_ALL:
1919 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1920 break;
1921 case HWSIM_REGTEST_STRICT_FOLLOW:
1922 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
1923 if (i == 0)
1924 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1925 break;
1926 case HWSIM_REGTEST_ALL:
1927 if (i == 0) {
1928 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1929 wiphy_apply_custom_regulatory(hw->wiphy,
1930 &hwsim_world_regdom_custom_01);
1931 } else if (i == 1) {
1932 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1933 wiphy_apply_custom_regulatory(hw->wiphy,
1934 &hwsim_world_regdom_custom_02);
1935 } else if (i == 4)
1936 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1937 break;
1938 default:
1939 break;
1940 }
1941
1942 /* give the regulatory workqueue a chance to run */
1943 if (regtest)
1944 schedule_timeout_interruptible(1);
1945 err = ieee80211_register_hw(hw);
1946 if (err < 0) {
1947 printk(KERN_DEBUG "mac80211_hwsim: "
1948 "ieee80211_register_hw failed (%d)\n", err);
1949 goto failed_hw;
1950 }
1951
1952 /* Work to be done after to ieee80211_register_hw() */
1953 switch (regtest) {
1954 case HWSIM_REGTEST_WORLD_ROAM:
1955 case HWSIM_REGTEST_DISABLED:
1956 break;
1957 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
1958 if (!i)
1959 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1960 break;
1961 case HWSIM_REGTEST_DRIVER_REG_ALL:
1962 case HWSIM_REGTEST_STRICT_ALL:
1963 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1964 break;
1965 case HWSIM_REGTEST_DIFF_COUNTRY:
1966 if (i < ARRAY_SIZE(hwsim_alpha2s))
1967 regulatory_hint(hw->wiphy, hwsim_alpha2s[i]);
1968 break;
1969 case HWSIM_REGTEST_CUSTOM_WORLD:
1970 case HWSIM_REGTEST_CUSTOM_WORLD_2:
1971 /*
1972 * Nothing to be done for custom world regulatory
1973 * domains after to ieee80211_register_hw
1974 */
1975 break;
1976 case HWSIM_REGTEST_STRICT_FOLLOW:
1977 if (i == 0)
1978 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1979 break;
1980 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
1981 if (i == 0)
1982 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1983 else if (i == 1)
1984 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
1985 break;
1986 case HWSIM_REGTEST_ALL:
1987 if (i == 2)
1988 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1989 else if (i == 3)
1990 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
1991 else if (i == 4)
1992 regulatory_hint(hw->wiphy, hwsim_alpha2s[2]);
1993 break;
1994 default:
1995 break;
1996 }
1997
1998 wiphy_debug(hw->wiphy, "hwaddr %pm registered\n",
1999 hw->wiphy->perm_addr);
2000
2001 data->debugfs = debugfs_create_dir("hwsim",
2002 hw->wiphy->debugfsdir);
2003 data->debugfs_ps = debugfs_create_file("ps", 0666,
2004 data->debugfs, data,
2005 &hwsim_fops_ps);
2006 data->debugfs_group = debugfs_create_file("group", 0666,
2007 data->debugfs, data,
2008 &hwsim_fops_group);
2009
2010 setup_timer(&data->beacon_timer, mac80211_hwsim_beacon,
2011 (unsigned long) hw);
2012
2013 list_add_tail(&data->list, &hwsim_radios);
2014 }
2015
2016 hwsim_mon = alloc_netdev(0, "hwsim%d", hwsim_mon_setup);
2017 if (hwsim_mon == NULL)
2018 goto failed;
2019
2020 rtnl_lock();
2021
2022 err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
2023 if (err < 0)
2024 goto failed_mon;
2025
2026
2027 err = register_netdevice(hwsim_mon);
2028 if (err < 0)
2029 goto failed_mon;
2030
2031 rtnl_unlock();
2032
2033 err = hwsim_init_netlink();
2034 if (err < 0)
2035 goto failed_nl;
2036
2037 return 0;
2038
2039 failed_nl:
2040 printk(KERN_DEBUG "mac_80211_hwsim: failed initializing netlink\n");
2041 return err;
2042
2043 failed_mon:
2044 rtnl_unlock();
2045 free_netdev(hwsim_mon);
2046 mac80211_hwsim_free();
2047 return err;
2048
2049 failed_hw:
2050 device_unregister(data->dev);
2051 failed_drvdata:
2052 ieee80211_free_hw(hw);
2053 failed:
2054 mac80211_hwsim_free();
2055 return err;
2056 }
2057
2058
2059 static void __exit exit_mac80211_hwsim(void)
2060 {
2061 printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
2062
2063 hwsim_exit_netlink();
2064
2065 mac80211_hwsim_free();
2066 unregister_netdev(hwsim_mon);
2067 }
2068
2069
2070 module_init(init_mac80211_hwsim);
2071 module_exit(exit_mac80211_hwsim);
Linux kernel - Deliverables
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