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 <net/genetlink.h>
31 #include "mac80211_hwsim.h"
32
33 #define WARN_QUEUE 100
34 #define MAX_QUEUE 200
35
36 MODULE_AUTHOR("Jouni Malinen");
37 MODULE_DESCRIPTION("Software simulator of 802.11 radio(s) for mac80211");
38 MODULE_LICENSE("GPL");
39
40 static u32 wmediumd_pid;
41
42 static int radios = 2;
43 module_param(radios, int, 0444);
44 MODULE_PARM_DESC(radios, "Number of simulated radios");
45
46 static bool fake_hw_scan;
47 module_param(fake_hw_scan, bool, 0444);
48 MODULE_PARM_DESC(fake_hw_scan, "Install fake (no-op) hw-scan handler");
49
50 /**
51 * enum hwsim_regtest - the type of regulatory tests we offer
52 *
53 * These are the different values you can use for the regtest
54 * module parameter. This is useful to help test world roaming
55 * and the driver regulatory_hint() call and combinations of these.
56 * If you want to do specific alpha2 regulatory domain tests simply
57 * use the userspace regulatory request as that will be respected as
58 * well without the need of this module parameter. This is designed
59 * only for testing the driver regulatory request, world roaming
60 * and all possible combinations.
61 *
62 * @HWSIM_REGTEST_DISABLED: No regulatory tests are performed,
63 * this is the default value.
64 * @HWSIM_REGTEST_DRIVER_REG_FOLLOW: Used for testing the driver regulatory
65 * hint, only one driver regulatory hint will be sent as such the
66 * secondary radios are expected to follow.
67 * @HWSIM_REGTEST_DRIVER_REG_ALL: Used for testing the driver regulatory
68 * request with all radios reporting the same regulatory domain.
69 * @HWSIM_REGTEST_DIFF_COUNTRY: Used for testing the drivers calling
70 * different regulatory domains requests. Expected behaviour is for
71 * an intersection to occur but each device will still use their
72 * respective regulatory requested domains. Subsequent radios will
73 * use the resulting intersection.
74 * @HWSIM_REGTEST_WORLD_ROAM: Used for testing the world roaming. We accomplish
75 * this by using a custom beacon-capable regulatory domain for the first
76 * radio. All other device world roam.
77 * @HWSIM_REGTEST_CUSTOM_WORLD: Used for testing the custom world regulatory
78 * domain requests. All radios will adhere to this custom world regulatory
79 * domain.
80 * @HWSIM_REGTEST_CUSTOM_WORLD_2: Used for testing 2 custom world regulatory
81 * domain requests. The first radio will adhere to the first custom world
82 * regulatory domain, the second one to the second custom world regulatory
83 * domain. All other devices will world roam.
84 * @HWSIM_REGTEST_STRICT_FOLLOW_: Used for testing strict regulatory domain
85 * settings, only the first radio will send a regulatory domain request
86 * and use strict settings. The rest of the radios are expected to follow.
87 * @HWSIM_REGTEST_STRICT_ALL: Used for testing strict regulatory domain
88 * settings. All radios will adhere to this.
89 * @HWSIM_REGTEST_STRICT_AND_DRIVER_REG: Used for testing strict regulatory
90 * domain settings, combined with secondary driver regulatory domain
91 * settings. The first radio will get a strict regulatory domain setting
92 * using the first driver regulatory request and the second radio will use
93 * non-strict settings using the second driver regulatory request. All
94 * other devices should follow the intersection created between the
95 * first two.
96 * @HWSIM_REGTEST_ALL: Used for testing every possible mix. You will need
97 * at least 6 radios for a complete test. We will test in this order:
98 * 1 - driver custom world regulatory domain
99 * 2 - second custom world regulatory domain
100 * 3 - first driver regulatory domain request
101 * 4 - second driver regulatory domain request
102 * 5 - strict regulatory domain settings using the third driver regulatory
103 * domain request
104 * 6 and on - should follow the intersection of the 3rd, 4rth and 5th radio
105 * regulatory requests.
106 */
107 enum hwsim_regtest {
108 HWSIM_REGTEST_DISABLED = 0,
109 HWSIM_REGTEST_DRIVER_REG_FOLLOW = 1,
110 HWSIM_REGTEST_DRIVER_REG_ALL = 2,
111 HWSIM_REGTEST_DIFF_COUNTRY = 3,
112 HWSIM_REGTEST_WORLD_ROAM = 4,
113 HWSIM_REGTEST_CUSTOM_WORLD = 5,
114 HWSIM_REGTEST_CUSTOM_WORLD_2 = 6,
115 HWSIM_REGTEST_STRICT_FOLLOW = 7,
116 HWSIM_REGTEST_STRICT_ALL = 8,
117 HWSIM_REGTEST_STRICT_AND_DRIVER_REG = 9,
118 HWSIM_REGTEST_ALL = 10,
119 };
120
121 /* Set to one of the HWSIM_REGTEST_* values above */
122 static int regtest = HWSIM_REGTEST_DISABLED;
123 module_param(regtest, int, 0444);
124 MODULE_PARM_DESC(regtest, "The type of regulatory test we want to run");
125
126 static const char *hwsim_alpha2s[] = {
127 "FI",
128 "AL",
129 "US",
130 "DE",
131 "JP",
132 "AL",
133 };
134
135 static const struct ieee80211_regdomain hwsim_world_regdom_custom_01 = {
136 .n_reg_rules = 4,
137 .alpha2 = "99",
138 .reg_rules = {
139 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
140 REG_RULE(2484-10, 2484+10, 40, 0, 20, 0),
141 REG_RULE(5150-10, 5240+10, 40, 0, 30, 0),
142 REG_RULE(5745-10, 5825+10, 40, 0, 30, 0),
143 }
144 };
145
146 static const struct ieee80211_regdomain hwsim_world_regdom_custom_02 = {
147 .n_reg_rules = 2,
148 .alpha2 = "99",
149 .reg_rules = {
150 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
151 REG_RULE(5725-10, 5850+10, 40, 0, 30,
152 NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS),
153 }
154 };
155
156 struct hwsim_vif_priv {
157 u32 magic;
158 u8 bssid[ETH_ALEN];
159 bool assoc;
160 u16 aid;
161 };
162
163 #define HWSIM_VIF_MAGIC 0x69537748
164
hwsim_check_magic(struct ieee80211_vif * vif)165 static inline void hwsim_check_magic(struct ieee80211_vif *vif)
166 {
167 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
168 WARN_ON(vp->magic != HWSIM_VIF_MAGIC);
169 }
170
hwsim_set_magic(struct ieee80211_vif * vif)171 static inline void hwsim_set_magic(struct ieee80211_vif *vif)
172 {
173 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
174 vp->magic = HWSIM_VIF_MAGIC;
175 }
176
hwsim_clear_magic(struct ieee80211_vif * vif)177 static inline void hwsim_clear_magic(struct ieee80211_vif *vif)
178 {
179 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
180 vp->magic = 0;
181 }
182
183 struct hwsim_sta_priv {
184 u32 magic;
185 };
186
187 #define HWSIM_STA_MAGIC 0x6d537748
188
hwsim_check_sta_magic(struct ieee80211_sta * sta)189 static inline void hwsim_check_sta_magic(struct ieee80211_sta *sta)
190 {
191 struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
192 WARN_ON(sp->magic != HWSIM_STA_MAGIC);
193 }
194
hwsim_set_sta_magic(struct ieee80211_sta * sta)195 static inline void hwsim_set_sta_magic(struct ieee80211_sta *sta)
196 {
197 struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
198 sp->magic = HWSIM_STA_MAGIC;
199 }
200
hwsim_clear_sta_magic(struct ieee80211_sta * sta)201 static inline void hwsim_clear_sta_magic(struct ieee80211_sta *sta)
202 {
203 struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
204 sp->magic = 0;
205 }
206
207 static struct class *hwsim_class;
208
209 static struct net_device *hwsim_mon; /* global monitor netdev */
210
211 #define CHAN2G(_freq) { \
212 .band = IEEE80211_BAND_2GHZ, \
213 .center_freq = (_freq), \
214 .hw_value = (_freq), \
215 .max_power = 20, \
216 }
217
218 #define CHAN5G(_freq) { \
219 .band = IEEE80211_BAND_5GHZ, \
220 .center_freq = (_freq), \
221 .hw_value = (_freq), \
222 .max_power = 20, \
223 }
224
225 static const struct ieee80211_channel hwsim_channels_2ghz[] = {
226 CHAN2G(2412), /* Channel 1 */
227 CHAN2G(2417), /* Channel 2 */
228 CHAN2G(2422), /* Channel 3 */
229 CHAN2G(2427), /* Channel 4 */
230 CHAN2G(2432), /* Channel 5 */
231 CHAN2G(2437), /* Channel 6 */
232 CHAN2G(2442), /* Channel 7 */
233 CHAN2G(2447), /* Channel 8 */
234 CHAN2G(2452), /* Channel 9 */
235 CHAN2G(2457), /* Channel 10 */
236 CHAN2G(2462), /* Channel 11 */
237 CHAN2G(2467), /* Channel 12 */
238 CHAN2G(2472), /* Channel 13 */
239 CHAN2G(2484), /* Channel 14 */
240 };
241
242 static const struct ieee80211_channel hwsim_channels_5ghz[] = {
243 CHAN5G(5180), /* Channel 36 */
244 CHAN5G(5200), /* Channel 40 */
245 CHAN5G(5220), /* Channel 44 */
246 CHAN5G(5240), /* Channel 48 */
247
248 CHAN5G(5260), /* Channel 52 */
249 CHAN5G(5280), /* Channel 56 */
250 CHAN5G(5300), /* Channel 60 */
251 CHAN5G(5320), /* Channel 64 */
252
253 CHAN5G(5500), /* Channel 100 */
254 CHAN5G(5520), /* Channel 104 */
255 CHAN5G(5540), /* Channel 108 */
256 CHAN5G(5560), /* Channel 112 */
257 CHAN5G(5580), /* Channel 116 */
258 CHAN5G(5600), /* Channel 120 */
259 CHAN5G(5620), /* Channel 124 */
260 CHAN5G(5640), /* Channel 128 */
261 CHAN5G(5660), /* Channel 132 */
262 CHAN5G(5680), /* Channel 136 */
263 CHAN5G(5700), /* Channel 140 */
264
265 CHAN5G(5745), /* Channel 149 */
266 CHAN5G(5765), /* Channel 153 */
267 CHAN5G(5785), /* Channel 157 */
268 CHAN5G(5805), /* Channel 161 */
269 CHAN5G(5825), /* Channel 165 */
270 };
271
272 static const struct ieee80211_rate hwsim_rates[] = {
273 { .bitrate = 10 },
274 { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
275 { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
276 { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
277 { .bitrate = 60 },
278 { .bitrate = 90 },
279 { .bitrate = 120 },
280 { .bitrate = 180 },
281 { .bitrate = 240 },
282 { .bitrate = 360 },
283 { .bitrate = 480 },
284 { .bitrate = 540 }
285 };
286
287 static spinlock_t hwsim_radio_lock;
288 static struct list_head hwsim_radios;
289
290 struct mac80211_hwsim_data {
291 struct list_head list;
292 struct ieee80211_hw *hw;
293 struct device *dev;
294 struct ieee80211_supported_band bands[2];
295 struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)];
296 struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)];
297 struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
298
299 struct mac_address addresses[2];
300
301 struct ieee80211_channel *channel;
302 unsigned long beacon_int; /* in jiffies unit */
303 unsigned int rx_filter;
304 bool started, idle, scanning;
305 struct mutex mutex;
306 struct timer_list beacon_timer;
307 enum ps_mode {
308 PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
309 } ps;
310 bool ps_poll_pending;
311 struct dentry *debugfs;
312 struct dentry *debugfs_ps;
313
314 struct sk_buff_head pending; /* packets pending */
315 /*
316 * Only radios in the same group can communicate together (the
317 * channel has to match too). Each bit represents a group. A
318 * radio can be in more then one group.
319 */
320 u64 group;
321 struct dentry *debugfs_group;
322
323 int power_level;
324 };
325
326
327 struct hwsim_radiotap_hdr {
328 struct ieee80211_radiotap_header hdr;
329 u8 rt_flags;
330 u8 rt_rate;
331 __le16 rt_channel;
332 __le16 rt_chbitmask;
333 } __packed;
334
335 /* MAC80211_HWSIM netlinf family */
336 static struct genl_family hwsim_genl_family = {
337 .id = GENL_ID_GENERATE,
338 .hdrsize = 0,
339 .name = "MAC80211_HWSIM",
340 .version = 1,
341 .maxattr = HWSIM_ATTR_MAX,
342 };
343
344 /* MAC80211_HWSIM netlink policy */
345
346 static struct nla_policy hwsim_genl_policy[HWSIM_ATTR_MAX + 1] = {
347 [HWSIM_ATTR_ADDR_RECEIVER] = { .type = NLA_UNSPEC,
348 .len = 6*sizeof(u8) },
349 [HWSIM_ATTR_ADDR_TRANSMITTER] = { .type = NLA_UNSPEC,
350 .len = 6*sizeof(u8) },
351 [HWSIM_ATTR_FRAME] = { .type = NLA_BINARY,
352 .len = IEEE80211_MAX_DATA_LEN },
353 [HWSIM_ATTR_FLAGS] = { .type = NLA_U32 },
354 [HWSIM_ATTR_RX_RATE] = { .type = NLA_U32 },
355 [HWSIM_ATTR_SIGNAL] = { .type = NLA_U32 },
356 [HWSIM_ATTR_TX_INFO] = { .type = NLA_UNSPEC,
357 .len = IEEE80211_TX_MAX_RATES*sizeof(
358 struct hwsim_tx_rate)},
359 [HWSIM_ATTR_COOKIE] = { .type = NLA_U64 },
360 };
361
hwsim_mon_xmit(struct sk_buff * skb,struct net_device * dev)362 static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
363 struct net_device *dev)
364 {
365 /* TODO: allow packet injection */
366 dev_kfree_skb(skb);
367 return NETDEV_TX_OK;
368 }
369
370
mac80211_hwsim_monitor_rx(struct ieee80211_hw * hw,struct sk_buff * tx_skb)371 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
372 struct sk_buff *tx_skb)
373 {
374 struct mac80211_hwsim_data *data = hw->priv;
375 struct sk_buff *skb;
376 struct hwsim_radiotap_hdr *hdr;
377 u16 flags;
378 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
379 struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
380
381 if (!netif_running(hwsim_mon))
382 return;
383
384 skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
385 if (skb == NULL)
386 return;
387
388 hdr = (struct hwsim_radiotap_hdr *) skb_push(skb, sizeof(*hdr));
389 hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
390 hdr->hdr.it_pad = 0;
391 hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
392 hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
393 (1 << IEEE80211_RADIOTAP_RATE) |
394 (1 << IEEE80211_RADIOTAP_CHANNEL));
395 hdr->rt_flags = 0;
396 hdr->rt_rate = txrate->bitrate / 5;
397 hdr->rt_channel = cpu_to_le16(data->channel->center_freq);
398 flags = IEEE80211_CHAN_2GHZ;
399 if (txrate->flags & IEEE80211_RATE_ERP_G)
400 flags |= IEEE80211_CHAN_OFDM;
401 else
402 flags |= IEEE80211_CHAN_CCK;
403 hdr->rt_chbitmask = cpu_to_le16(flags);
404
405 skb->dev = hwsim_mon;
406 skb_set_mac_header(skb, 0);
407 skb->ip_summed = CHECKSUM_UNNECESSARY;
408 skb->pkt_type = PACKET_OTHERHOST;
409 skb->protocol = htons(ETH_P_802_2);
410 memset(skb->cb, 0, sizeof(skb->cb));
411 netif_rx(skb);
412 }
413
414
mac80211_hwsim_monitor_ack(struct ieee80211_hw * hw,const u8 * addr)415 static void mac80211_hwsim_monitor_ack(struct ieee80211_hw *hw, const u8 *addr)
416 {
417 struct mac80211_hwsim_data *data = hw->priv;
418 struct sk_buff *skb;
419 struct hwsim_radiotap_hdr *hdr;
420 u16 flags;
421 struct ieee80211_hdr *hdr11;
422
423 if (!netif_running(hwsim_mon))
424 return;
425
426 skb = dev_alloc_skb(100);
427 if (skb == NULL)
428 return;
429
430 hdr = (struct hwsim_radiotap_hdr *) skb_put(skb, sizeof(*hdr));
431 hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
432 hdr->hdr.it_pad = 0;
433 hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
434 hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
435 (1 << IEEE80211_RADIOTAP_CHANNEL));
436 hdr->rt_flags = 0;
437 hdr->rt_rate = 0;
438 hdr->rt_channel = cpu_to_le16(data->channel->center_freq);
439 flags = IEEE80211_CHAN_2GHZ;
440 hdr->rt_chbitmask = cpu_to_le16(flags);
441
442 hdr11 = (struct ieee80211_hdr *) skb_put(skb, 10);
443 hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
444 IEEE80211_STYPE_ACK);
445 hdr11->duration_id = cpu_to_le16(0);
446 memcpy(hdr11->addr1, addr, ETH_ALEN);
447
448 skb->dev = hwsim_mon;
449 skb_set_mac_header(skb, 0);
450 skb->ip_summed = CHECKSUM_UNNECESSARY;
451 skb->pkt_type = PACKET_OTHERHOST;
452 skb->protocol = htons(ETH_P_802_2);
453 memset(skb->cb, 0, sizeof(skb->cb));
454 netif_rx(skb);
455 }
456
457
hwsim_ps_rx_ok(struct mac80211_hwsim_data * data,struct sk_buff * skb)458 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
459 struct sk_buff *skb)
460 {
461 switch (data->ps) {
462 case PS_DISABLED:
463 return true;
464 case PS_ENABLED:
465 return false;
466 case PS_AUTO_POLL:
467 /* TODO: accept (some) Beacons by default and other frames only
468 * if pending PS-Poll has been sent */
469 return true;
470 case PS_MANUAL_POLL:
471 /* Allow unicast frames to own address if there is a pending
472 * PS-Poll */
473 if (data->ps_poll_pending &&
474 memcmp(data->hw->wiphy->perm_addr, skb->data + 4,
475 ETH_ALEN) == 0) {
476 data->ps_poll_pending = false;
477 return true;
478 }
479 return false;
480 }
481
482 return true;
483 }
484
485
486 struct mac80211_hwsim_addr_match_data {
487 bool ret;
488 const u8 *addr;
489 };
490
mac80211_hwsim_addr_iter(void * data,u8 * mac,struct ieee80211_vif * vif)491 static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
492 struct ieee80211_vif *vif)
493 {
494 struct mac80211_hwsim_addr_match_data *md = data;
495 if (memcmp(mac, md->addr, ETH_ALEN) == 0)
496 md->ret = true;
497 }
498
499
mac80211_hwsim_addr_match(struct mac80211_hwsim_data * data,const u8 * addr)500 static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
501 const u8 *addr)
502 {
503 struct mac80211_hwsim_addr_match_data md;
504
505 if (memcmp(addr, data->hw->wiphy->perm_addr, ETH_ALEN) == 0)
506 return true;
507
508 md.ret = false;
509 md.addr = addr;
510 ieee80211_iterate_active_interfaces_atomic(data->hw,
511 mac80211_hwsim_addr_iter,
512 &md);
513
514 return md.ret;
515 }
516
mac80211_hwsim_tx_frame_nl(struct ieee80211_hw * hw,struct sk_buff * my_skb,int dst_pid)517 static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
518 struct sk_buff *my_skb,
519 int dst_pid)
520 {
521 struct sk_buff *skb;
522 struct mac80211_hwsim_data *data = hw->priv;
523 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) my_skb->data;
524 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(my_skb);
525 void *msg_head;
526 unsigned int hwsim_flags = 0;
527 int i;
528 struct hwsim_tx_rate tx_attempts[IEEE80211_TX_MAX_RATES];
529
530 if (data->idle) {
531 wiphy_debug(hw->wiphy, "Trying to TX when idle - reject\n");
532 dev_kfree_skb(my_skb);
533 return;
534 }
535
536 if (data->ps != PS_DISABLED)
537 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
538 /* If the queue contains MAX_QUEUE skb's drop some */
539 if (skb_queue_len(&data->pending) >= MAX_QUEUE) {
540 /* Droping until WARN_QUEUE level */
541 while (skb_queue_len(&data->pending) >= WARN_QUEUE)
542 skb_dequeue(&data->pending);
543 }
544
545 skb = genlmsg_new(NLMSG_GOODSIZE, GFP_ATOMIC);
546 if (skb == NULL)
547 goto nla_put_failure;
548
549 msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
550 HWSIM_CMD_FRAME);
551 if (msg_head == NULL) {
552 printk(KERN_DEBUG "mac80211_hwsim: problem with msg_head\n");
553 goto nla_put_failure;
554 }
555
556 NLA_PUT(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
557 sizeof(struct mac_address), data->addresses[1].addr);
558
559 /* We get the skb->data */
560 NLA_PUT(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data);
561
562 /* We get the flags for this transmission, and we translate them to
563 wmediumd flags */
564
565 if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
566 hwsim_flags |= HWSIM_TX_CTL_REQ_TX_STATUS;
567
568 if (info->flags & IEEE80211_TX_CTL_NO_ACK)
569 hwsim_flags |= HWSIM_TX_CTL_NO_ACK;
570
571 NLA_PUT_U32(skb, HWSIM_ATTR_FLAGS, hwsim_flags);
572
573 /* We get the tx control (rate and retries) info*/
574
575 for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
576 tx_attempts[i].idx = info->status.rates[i].idx;
577 tx_attempts[i].count = info->status.rates[i].count;
578 }
579
580 NLA_PUT(skb, HWSIM_ATTR_TX_INFO,
581 sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
582 tx_attempts);
583
584 /* We create a cookie to identify this skb */
585 NLA_PUT_U64(skb, HWSIM_ATTR_COOKIE, (unsigned long) my_skb);
586
587 genlmsg_end(skb, msg_head);
588 genlmsg_unicast(&init_net, skb, dst_pid);
589
590 /* Enqueue the packet */
591 skb_queue_tail(&data->pending, my_skb);
592 return;
593
594 nla_put_failure:
595 printk(KERN_DEBUG "mac80211_hwsim: error occured in %s\n", __func__);
596 }
597
mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw * hw,struct sk_buff * skb)598 static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
599 struct sk_buff *skb)
600 {
601 struct mac80211_hwsim_data *data = hw->priv, *data2;
602 bool ack = false;
603 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
604 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
605 struct ieee80211_rx_status rx_status;
606
607 if (data->idle) {
608 wiphy_debug(hw->wiphy, "Trying to TX when idle - reject\n");
609 return false;
610 }
611
612 memset(&rx_status, 0, sizeof(rx_status));
613 /* TODO: set mactime */
614 rx_status.freq = data->channel->center_freq;
615 rx_status.band = data->channel->band;
616 rx_status.rate_idx = info->control.rates[0].idx;
617 if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
618 rx_status.flag |= RX_FLAG_HT;
619 if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
620 rx_status.flag |= RX_FLAG_40MHZ;
621 if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
622 rx_status.flag |= RX_FLAG_SHORT_GI;
623 /* TODO: simulate real signal strength (and optional packet loss) */
624 rx_status.signal = data->power_level - 50;
625
626 if (data->ps != PS_DISABLED)
627 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
628
629 /* release the skb's source info */
630 skb_orphan(skb);
631 skb_dst_drop(skb);
632 skb->mark = 0;
633 secpath_reset(skb);
634 nf_reset(skb);
635
636 /* Copy skb to all enabled radios that are on the current frequency */
637 spin_lock(&hwsim_radio_lock);
638 list_for_each_entry(data2, &hwsim_radios, list) {
639 struct sk_buff *nskb;
640
641 if (data == data2)
642 continue;
643
644 if (data2->idle || !data2->started ||
645 !hwsim_ps_rx_ok(data2, skb) ||
646 !data->channel || !data2->channel ||
647 data->channel->center_freq != data2->channel->center_freq ||
648 !(data->group & data2->group))
649 continue;
650
651 nskb = skb_copy(skb, GFP_ATOMIC);
652 if (nskb == NULL)
653 continue;
654
655 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
656 ack = true;
657 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
658 ieee80211_rx_irqsafe(data2->hw, nskb);
659 }
660 spin_unlock(&hwsim_radio_lock);
661
662 return ack;
663 }
664
mac80211_hwsim_tx(struct ieee80211_hw * hw,struct sk_buff * skb)665 static void mac80211_hwsim_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
666 {
667 bool ack;
668 struct ieee80211_tx_info *txi;
669 u32 _pid;
670
671 mac80211_hwsim_monitor_rx(hw, skb);
672
673 if (skb->len < 10) {
674 /* Should not happen; just a sanity check for addr1 use */
675 dev_kfree_skb(skb);
676 return;
677 }
678
679 /* wmediumd mode check */
680 _pid = ACCESS_ONCE(wmediumd_pid);
681
682 if (_pid)
683 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
684
685 /* NO wmediumd detected, perfect medium simulation */
686 ack = mac80211_hwsim_tx_frame_no_nl(hw, skb);
687
688 if (ack && skb->len >= 16) {
689 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
690 mac80211_hwsim_monitor_ack(hw, hdr->addr2);
691 }
692
693 txi = IEEE80211_SKB_CB(skb);
694
695 if (txi->control.vif)
696 hwsim_check_magic(txi->control.vif);
697 if (txi->control.sta)
698 hwsim_check_sta_magic(txi->control.sta);
699
700 ieee80211_tx_info_clear_status(txi);
701 if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
702 txi->flags |= IEEE80211_TX_STAT_ACK;
703 ieee80211_tx_status_irqsafe(hw, skb);
704 }
705
706
mac80211_hwsim_start(struct ieee80211_hw * hw)707 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
708 {
709 struct mac80211_hwsim_data *data = hw->priv;
710 wiphy_debug(hw->wiphy, "%s\n", __func__);
711 data->started = true;
712 return 0;
713 }
714
715
mac80211_hwsim_stop(struct ieee80211_hw * hw)716 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
717 {
718 struct mac80211_hwsim_data *data = hw->priv;
719 data->started = false;
720 del_timer(&data->beacon_timer);
721 wiphy_debug(hw->wiphy, "%s\n", __func__);
722 }
723
724
mac80211_hwsim_add_interface(struct ieee80211_hw * hw,struct ieee80211_vif * vif)725 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
726 struct ieee80211_vif *vif)
727 {
728 wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
729 __func__, ieee80211_vif_type_p2p(vif),
730 vif->addr);
731 hwsim_set_magic(vif);
732 return 0;
733 }
734
735
mac80211_hwsim_change_interface(struct ieee80211_hw * hw,struct ieee80211_vif * vif,enum nl80211_iftype newtype,bool newp2p)736 static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
737 struct ieee80211_vif *vif,
738 enum nl80211_iftype newtype,
739 bool newp2p)
740 {
741 newtype = ieee80211_iftype_p2p(newtype, newp2p);
742 wiphy_debug(hw->wiphy,
743 "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
744 __func__, ieee80211_vif_type_p2p(vif),
745 newtype, vif->addr);
746 hwsim_check_magic(vif);
747
748 return 0;
749 }
750
mac80211_hwsim_remove_interface(struct ieee80211_hw * hw,struct ieee80211_vif * vif)751 static void mac80211_hwsim_remove_interface(
752 struct ieee80211_hw *hw, struct ieee80211_vif *vif)
753 {
754 wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
755 __func__, ieee80211_vif_type_p2p(vif),
756 vif->addr);
757 hwsim_check_magic(vif);
758 hwsim_clear_magic(vif);
759 }
760
761
mac80211_hwsim_beacon_tx(void * arg,u8 * mac,struct ieee80211_vif * vif)762 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
763 struct ieee80211_vif *vif)
764 {
765 struct ieee80211_hw *hw = arg;
766 struct sk_buff *skb;
767 struct ieee80211_tx_info *info;
768 u32 _pid;
769
770 hwsim_check_magic(vif);
771
772 if (vif->type != NL80211_IFTYPE_AP &&
773 vif->type != NL80211_IFTYPE_MESH_POINT &&
774 vif->type != NL80211_IFTYPE_ADHOC)
775 return;
776
777 skb = ieee80211_beacon_get(hw, vif);
778 if (skb == NULL)
779 return;
780 info = IEEE80211_SKB_CB(skb);
781
782 mac80211_hwsim_monitor_rx(hw, skb);
783
784 /* wmediumd mode check */
785 _pid = ACCESS_ONCE(wmediumd_pid);
786
787 if (_pid)
788 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
789
790 mac80211_hwsim_tx_frame_no_nl(hw, skb);
791 dev_kfree_skb(skb);
792 }
793
794
mac80211_hwsim_beacon(unsigned long arg)795 static void mac80211_hwsim_beacon(unsigned long arg)
796 {
797 struct ieee80211_hw *hw = (struct ieee80211_hw *) arg;
798 struct mac80211_hwsim_data *data = hw->priv;
799
800 if (!data->started)
801 return;
802
803 ieee80211_iterate_active_interfaces_atomic(
804 hw, mac80211_hwsim_beacon_tx, hw);
805
806 data->beacon_timer.expires = jiffies + data->beacon_int;
807 add_timer(&data->beacon_timer);
808 }
809
810 static const char *hwsim_chantypes[] = {
811 [NL80211_CHAN_NO_HT] = "noht",
812 [NL80211_CHAN_HT20] = "ht20",
813 [NL80211_CHAN_HT40MINUS] = "ht40-",
814 [NL80211_CHAN_HT40PLUS] = "ht40+",
815 };
816
mac80211_hwsim_config(struct ieee80211_hw * hw,u32 changed)817 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
818 {
819 struct mac80211_hwsim_data *data = hw->priv;
820 struct ieee80211_conf *conf = &hw->conf;
821 static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
822 [IEEE80211_SMPS_AUTOMATIC] = "auto",
823 [IEEE80211_SMPS_OFF] = "off",
824 [IEEE80211_SMPS_STATIC] = "static",
825 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
826 };
827
828 wiphy_debug(hw->wiphy,
829 "%s (freq=%d/%s idle=%d ps=%d smps=%s)\n",
830 __func__,
831 conf->channel->center_freq,
832 hwsim_chantypes[conf->channel_type],
833 !!(conf->flags & IEEE80211_CONF_IDLE),
834 !!(conf->flags & IEEE80211_CONF_PS),
835 smps_modes[conf->smps_mode]);
836
837 data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
838
839 data->channel = conf->channel;
840 data->power_level = conf->power_level;
841 if (!data->started || !data->beacon_int)
842 del_timer(&data->beacon_timer);
843 else
844 mod_timer(&data->beacon_timer, jiffies + data->beacon_int);
845
846 return 0;
847 }
848
849
mac80211_hwsim_configure_filter(struct ieee80211_hw * hw,unsigned int changed_flags,unsigned int * total_flags,u64 multicast)850 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
851 unsigned int changed_flags,
852 unsigned int *total_flags,u64 multicast)
853 {
854 struct mac80211_hwsim_data *data = hw->priv;
855
856 wiphy_debug(hw->wiphy, "%s\n", __func__);
857
858 data->rx_filter = 0;
859 if (*total_flags & FIF_PROMISC_IN_BSS)
860 data->rx_filter |= FIF_PROMISC_IN_BSS;
861 if (*total_flags & FIF_ALLMULTI)
862 data->rx_filter |= FIF_ALLMULTI;
863
864 *total_flags = data->rx_filter;
865 }
866
mac80211_hwsim_bss_info_changed(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_bss_conf * info,u32 changed)867 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
868 struct ieee80211_vif *vif,
869 struct ieee80211_bss_conf *info,
870 u32 changed)
871 {
872 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
873 struct mac80211_hwsim_data *data = hw->priv;
874
875 hwsim_check_magic(vif);
876
877 wiphy_debug(hw->wiphy, "%s(changed=0x%x)\n", __func__, changed);
878
879 if (changed & BSS_CHANGED_BSSID) {
880 wiphy_debug(hw->wiphy, "%s: BSSID changed: %pM\n",
881 __func__, info->bssid);
882 memcpy(vp->bssid, info->bssid, ETH_ALEN);
883 }
884
885 if (changed & BSS_CHANGED_ASSOC) {
886 wiphy_debug(hw->wiphy, " ASSOC: assoc=%d aid=%d\n",
887 info->assoc, info->aid);
888 vp->assoc = info->assoc;
889 vp->aid = info->aid;
890 }
891
892 if (changed & BSS_CHANGED_BEACON_INT) {
893 wiphy_debug(hw->wiphy, " BCNINT: %d\n", info->beacon_int);
894 data->beacon_int = 1024 * info->beacon_int / 1000 * HZ / 1000;
895 if (WARN_ON(!data->beacon_int))
896 data->beacon_int = 1;
897 if (data->started)
898 mod_timer(&data->beacon_timer,
899 jiffies + data->beacon_int);
900 }
901
902 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
903 wiphy_debug(hw->wiphy, " ERP_CTS_PROT: %d\n",
904 info->use_cts_prot);
905 }
906
907 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
908 wiphy_debug(hw->wiphy, " ERP_PREAMBLE: %d\n",
909 info->use_short_preamble);
910 }
911
912 if (changed & BSS_CHANGED_ERP_SLOT) {
913 wiphy_debug(hw->wiphy, " ERP_SLOT: %d\n", info->use_short_slot);
914 }
915
916 if (changed & BSS_CHANGED_HT) {
917 wiphy_debug(hw->wiphy, " HT: op_mode=0x%x, chantype=%s\n",
918 info->ht_operation_mode,
919 hwsim_chantypes[info->channel_type]);
920 }
921
922 if (changed & BSS_CHANGED_BASIC_RATES) {
923 wiphy_debug(hw->wiphy, " BASIC_RATES: 0x%llx\n",
924 (unsigned long long) info->basic_rates);
925 }
926 }
927
mac80211_hwsim_sta_add(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta)928 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
929 struct ieee80211_vif *vif,
930 struct ieee80211_sta *sta)
931 {
932 hwsim_check_magic(vif);
933 hwsim_set_sta_magic(sta);
934
935 return 0;
936 }
937
mac80211_hwsim_sta_remove(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta)938 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
939 struct ieee80211_vif *vif,
940 struct ieee80211_sta *sta)
941 {
942 hwsim_check_magic(vif);
943 hwsim_clear_sta_magic(sta);
944
945 return 0;
946 }
947
mac80211_hwsim_sta_notify(struct ieee80211_hw * hw,struct ieee80211_vif * vif,enum sta_notify_cmd cmd,struct ieee80211_sta * sta)948 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
949 struct ieee80211_vif *vif,
950 enum sta_notify_cmd cmd,
951 struct ieee80211_sta *sta)
952 {
953 hwsim_check_magic(vif);
954
955 switch (cmd) {
956 case STA_NOTIFY_SLEEP:
957 case STA_NOTIFY_AWAKE:
958 /* TODO: make good use of these flags */
959 break;
960 default:
961 WARN(1, "Invalid sta notify: %d\n", cmd);
962 break;
963 }
964 }
965
mac80211_hwsim_set_tim(struct ieee80211_hw * hw,struct ieee80211_sta * sta,bool set)966 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
967 struct ieee80211_sta *sta,
968 bool set)
969 {
970 hwsim_check_sta_magic(sta);
971 return 0;
972 }
973
mac80211_hwsim_conf_tx(struct ieee80211_hw * hw,struct ieee80211_vif * vif,u16 queue,const struct ieee80211_tx_queue_params * params)974 static int mac80211_hwsim_conf_tx(
975 struct ieee80211_hw *hw,
976 struct ieee80211_vif *vif, u16 queue,
977 const struct ieee80211_tx_queue_params *params)
978 {
979 wiphy_debug(hw->wiphy,
980 "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
981 __func__, queue,
982 params->txop, params->cw_min,
983 params->cw_max, params->aifs);
984 return 0;
985 }
986
mac80211_hwsim_get_survey(struct ieee80211_hw * hw,int idx,struct survey_info * survey)987 static int mac80211_hwsim_get_survey(
988 struct ieee80211_hw *hw, int idx,
989 struct survey_info *survey)
990 {
991 struct ieee80211_conf *conf = &hw->conf;
992
993 wiphy_debug(hw->wiphy, "%s (idx=%d)\n", __func__, idx);
994
995 if (idx != 0)
996 return -ENOENT;
997
998 /* Current channel */
999 survey->channel = conf->channel;
1000
1001 /*
1002 * Magically conjured noise level --- this is only ok for simulated hardware.
1003 *
1004 * A real driver which cannot determine the real channel noise MUST NOT
1005 * report any noise, especially not a magically conjured one :-)
1006 */
1007 survey->filled = SURVEY_INFO_NOISE_DBM;
1008 survey->noise = -92;
1009
1010 return 0;
1011 }
1012
1013 #ifdef CONFIG_NL80211_TESTMODE
1014 /*
1015 * This section contains example code for using netlink
1016 * attributes with the testmode command in nl80211.
1017 */
1018
1019 /* These enums need to be kept in sync with userspace */
1020 enum hwsim_testmode_attr {
1021 __HWSIM_TM_ATTR_INVALID = 0,
1022 HWSIM_TM_ATTR_CMD = 1,
1023 HWSIM_TM_ATTR_PS = 2,
1024
1025 /* keep last */
1026 __HWSIM_TM_ATTR_AFTER_LAST,
1027 HWSIM_TM_ATTR_MAX = __HWSIM_TM_ATTR_AFTER_LAST - 1
1028 };
1029
1030 enum hwsim_testmode_cmd {
1031 HWSIM_TM_CMD_SET_PS = 0,
1032 HWSIM_TM_CMD_GET_PS = 1,
1033 };
1034
1035 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
1036 [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
1037 [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
1038 };
1039
1040 static int hwsim_fops_ps_write(void *dat, u64 val);
1041
mac80211_hwsim_testmode_cmd(struct ieee80211_hw * hw,void * data,int len)1042 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
1043 void *data, int len)
1044 {
1045 struct mac80211_hwsim_data *hwsim = hw->priv;
1046 struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
1047 struct sk_buff *skb;
1048 int err, ps;
1049
1050 err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
1051 hwsim_testmode_policy);
1052 if (err)
1053 return err;
1054
1055 if (!tb[HWSIM_TM_ATTR_CMD])
1056 return -EINVAL;
1057
1058 switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
1059 case HWSIM_TM_CMD_SET_PS:
1060 if (!tb[HWSIM_TM_ATTR_PS])
1061 return -EINVAL;
1062 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
1063 return hwsim_fops_ps_write(hwsim, ps);
1064 case HWSIM_TM_CMD_GET_PS:
1065 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
1066 nla_total_size(sizeof(u32)));
1067 if (!skb)
1068 return -ENOMEM;
1069 NLA_PUT_U32(skb, HWSIM_TM_ATTR_PS, hwsim->ps);
1070 return cfg80211_testmode_reply(skb);
1071 default:
1072 return -EOPNOTSUPP;
1073 }
1074
1075 nla_put_failure:
1076 kfree_skb(skb);
1077 return -ENOBUFS;
1078 }
1079 #endif
1080
mac80211_hwsim_ampdu_action(struct ieee80211_hw * hw,struct ieee80211_vif * vif,enum ieee80211_ampdu_mlme_action action,struct ieee80211_sta * sta,u16 tid,u16 * ssn,u8 buf_size)1081 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
1082 struct ieee80211_vif *vif,
1083 enum ieee80211_ampdu_mlme_action action,
1084 struct ieee80211_sta *sta, u16 tid, u16 *ssn,
1085 u8 buf_size)
1086 {
1087 switch (action) {
1088 case IEEE80211_AMPDU_TX_START:
1089 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1090 break;
1091 case IEEE80211_AMPDU_TX_STOP:
1092 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1093 break;
1094 case IEEE80211_AMPDU_TX_OPERATIONAL:
1095 break;
1096 case IEEE80211_AMPDU_RX_START:
1097 case IEEE80211_AMPDU_RX_STOP:
1098 break;
1099 default:
1100 return -EOPNOTSUPP;
1101 }
1102
1103 return 0;
1104 }
1105
mac80211_hwsim_flush(struct ieee80211_hw * hw,bool drop)1106 static void mac80211_hwsim_flush(struct ieee80211_hw *hw, bool drop)
1107 {
1108 /* Not implemented, queues only on kernel side */
1109 }
1110
1111 struct hw_scan_done {
1112 struct delayed_work w;
1113 struct ieee80211_hw *hw;
1114 };
1115
hw_scan_done(struct work_struct * work)1116 static void hw_scan_done(struct work_struct *work)
1117 {
1118 struct hw_scan_done *hsd =
1119 container_of(work, struct hw_scan_done, w.work);
1120
1121 ieee80211_scan_completed(hsd->hw, false);
1122 kfree(hsd);
1123 }
1124
mac80211_hwsim_hw_scan(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct cfg80211_scan_request * req)1125 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
1126 struct ieee80211_vif *vif,
1127 struct cfg80211_scan_request *req)
1128 {
1129 struct hw_scan_done *hsd = kzalloc(sizeof(*hsd), GFP_KERNEL);
1130 int i;
1131
1132 if (!hsd)
1133 return -ENOMEM;
1134
1135 hsd->hw = hw;
1136 INIT_DELAYED_WORK(&hsd->w, hw_scan_done);
1137
1138 printk(KERN_DEBUG "hwsim hw_scan request\n");
1139 for (i = 0; i < req->n_channels; i++)
1140 printk(KERN_DEBUG "hwsim hw_scan freq %d\n",
1141 req->channels[i]->center_freq);
1142 print_hex_dump(KERN_DEBUG, "scan IEs: ", DUMP_PREFIX_OFFSET,
1143 16, 1, req->ie, req->ie_len, 1);
1144
1145 ieee80211_queue_delayed_work(hw, &hsd->w, 2 * HZ);
1146
1147 return 0;
1148 }
1149
mac80211_hwsim_sw_scan(struct ieee80211_hw * hw)1150 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw)
1151 {
1152 struct mac80211_hwsim_data *hwsim = hw->priv;
1153
1154 mutex_lock(&hwsim->mutex);
1155
1156 if (hwsim->scanning) {
1157 printk(KERN_DEBUG "two hwsim sw_scans detected!\n");
1158 goto out;
1159 }
1160
1161 printk(KERN_DEBUG "hwsim sw_scan request, prepping stuff\n");
1162 hwsim->scanning = true;
1163
1164 out:
1165 mutex_unlock(&hwsim->mutex);
1166 }
1167
mac80211_hwsim_sw_scan_complete(struct ieee80211_hw * hw)1168 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw)
1169 {
1170 struct mac80211_hwsim_data *hwsim = hw->priv;
1171
1172 mutex_lock(&hwsim->mutex);
1173
1174 printk(KERN_DEBUG "hwsim sw_scan_complete\n");
1175 hwsim->scanning = false;
1176
1177 mutex_unlock(&hwsim->mutex);
1178 }
1179
1180 static struct ieee80211_ops mac80211_hwsim_ops =
1181 {
1182 .tx = mac80211_hwsim_tx,
1183 .start = mac80211_hwsim_start,
1184 .stop = mac80211_hwsim_stop,
1185 .add_interface = mac80211_hwsim_add_interface,
1186 .change_interface = mac80211_hwsim_change_interface,
1187 .remove_interface = mac80211_hwsim_remove_interface,
1188 .config = mac80211_hwsim_config,
1189 .configure_filter = mac80211_hwsim_configure_filter,
1190 .bss_info_changed = mac80211_hwsim_bss_info_changed,
1191 .sta_add = mac80211_hwsim_sta_add,
1192 .sta_remove = mac80211_hwsim_sta_remove,
1193 .sta_notify = mac80211_hwsim_sta_notify,
1194 .set_tim = mac80211_hwsim_set_tim,
1195 .conf_tx = mac80211_hwsim_conf_tx,
1196 .get_survey = mac80211_hwsim_get_survey,
1197 CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)
1198 .ampdu_action = mac80211_hwsim_ampdu_action,
1199 .sw_scan_start = mac80211_hwsim_sw_scan,
1200 .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
1201 .flush = mac80211_hwsim_flush,
1202 };
1203
1204
mac80211_hwsim_free(void)1205 static void mac80211_hwsim_free(void)
1206 {
1207 struct list_head tmplist, *i, *tmp;
1208 struct mac80211_hwsim_data *data, *tmpdata;
1209
1210 INIT_LIST_HEAD(&tmplist);
1211
1212 spin_lock_bh(&hwsim_radio_lock);
1213 list_for_each_safe(i, tmp, &hwsim_radios)
1214 list_move(i, &tmplist);
1215 spin_unlock_bh(&hwsim_radio_lock);
1216
1217 list_for_each_entry_safe(data, tmpdata, &tmplist, list) {
1218 debugfs_remove(data->debugfs_group);
1219 debugfs_remove(data->debugfs_ps);
1220 debugfs_remove(data->debugfs);
1221 ieee80211_unregister_hw(data->hw);
1222 device_unregister(data->dev);
1223 ieee80211_free_hw(data->hw);
1224 }
1225 class_destroy(hwsim_class);
1226 }
1227
1228
1229 static struct device_driver mac80211_hwsim_driver = {
1230 .name = "mac80211_hwsim"
1231 };
1232
1233 static const struct net_device_ops hwsim_netdev_ops = {
1234 .ndo_start_xmit = hwsim_mon_xmit,
1235 .ndo_change_mtu = eth_change_mtu,
1236 .ndo_set_mac_address = eth_mac_addr,
1237 .ndo_validate_addr = eth_validate_addr,
1238 };
1239
hwsim_mon_setup(struct net_device * dev)1240 static void hwsim_mon_setup(struct net_device *dev)
1241 {
1242 dev->netdev_ops = &hwsim_netdev_ops;
1243 dev->destructor = free_netdev;
1244 ether_setup(dev);
1245 dev->tx_queue_len = 0;
1246 dev->type = ARPHRD_IEEE80211_RADIOTAP;
1247 memset(dev->dev_addr, 0, ETH_ALEN);
1248 dev->dev_addr[0] = 0x12;
1249 }
1250
1251
hwsim_send_ps_poll(void * dat,u8 * mac,struct ieee80211_vif * vif)1252 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
1253 {
1254 struct mac80211_hwsim_data *data = dat;
1255 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1256 struct sk_buff *skb;
1257 struct ieee80211_pspoll *pspoll;
1258 u32 _pid;
1259
1260 if (!vp->assoc)
1261 return;
1262
1263 wiphy_debug(data->hw->wiphy,
1264 "%s: send PS-Poll to %pM for aid %d\n",
1265 __func__, vp->bssid, vp->aid);
1266
1267 skb = dev_alloc_skb(sizeof(*pspoll));
1268 if (!skb)
1269 return;
1270 pspoll = (void *) skb_put(skb, sizeof(*pspoll));
1271 pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
1272 IEEE80211_STYPE_PSPOLL |
1273 IEEE80211_FCTL_PM);
1274 pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
1275 memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
1276 memcpy(pspoll->ta, mac, ETH_ALEN);
1277
1278 /* wmediumd mode check */
1279 _pid = ACCESS_ONCE(wmediumd_pid);
1280
1281 if (_pid)
1282 return mac80211_hwsim_tx_frame_nl(data->hw, skb, _pid);
1283
1284 if (!mac80211_hwsim_tx_frame_no_nl(data->hw, skb))
1285 printk(KERN_DEBUG "%s: PS-poll frame not ack'ed\n", __func__);
1286 dev_kfree_skb(skb);
1287 }
1288
1289
hwsim_send_nullfunc(struct mac80211_hwsim_data * data,u8 * mac,struct ieee80211_vif * vif,int ps)1290 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
1291 struct ieee80211_vif *vif, int ps)
1292 {
1293 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1294 struct sk_buff *skb;
1295 struct ieee80211_hdr *hdr;
1296 u32 _pid;
1297
1298 if (!vp->assoc)
1299 return;
1300
1301 wiphy_debug(data->hw->wiphy,
1302 "%s: send data::nullfunc to %pM ps=%d\n",
1303 __func__, vp->bssid, ps);
1304
1305 skb = dev_alloc_skb(sizeof(*hdr));
1306 if (!skb)
1307 return;
1308 hdr = (void *) skb_put(skb, sizeof(*hdr) - ETH_ALEN);
1309 hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
1310 IEEE80211_STYPE_NULLFUNC |
1311 (ps ? IEEE80211_FCTL_PM : 0));
1312 hdr->duration_id = cpu_to_le16(0);
1313 memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
1314 memcpy(hdr->addr2, mac, ETH_ALEN);
1315 memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
1316
1317 /* wmediumd mode check */
1318 _pid = ACCESS_ONCE(wmediumd_pid);
1319
1320 if (_pid)
1321 return mac80211_hwsim_tx_frame_nl(data->hw, skb, _pid);
1322
1323 if (!mac80211_hwsim_tx_frame_no_nl(data->hw, skb))
1324 printk(KERN_DEBUG "%s: nullfunc frame not ack'ed\n", __func__);
1325 dev_kfree_skb(skb);
1326 }
1327
1328
hwsim_send_nullfunc_ps(void * dat,u8 * mac,struct ieee80211_vif * vif)1329 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
1330 struct ieee80211_vif *vif)
1331 {
1332 struct mac80211_hwsim_data *data = dat;
1333 hwsim_send_nullfunc(data, mac, vif, 1);
1334 }
1335
1336
hwsim_send_nullfunc_no_ps(void * dat,u8 * mac,struct ieee80211_vif * vif)1337 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
1338 struct ieee80211_vif *vif)
1339 {
1340 struct mac80211_hwsim_data *data = dat;
1341 hwsim_send_nullfunc(data, mac, vif, 0);
1342 }
1343
1344
hwsim_fops_ps_read(void * dat,u64 * val)1345 static int hwsim_fops_ps_read(void *dat, u64 *val)
1346 {
1347 struct mac80211_hwsim_data *data = dat;
1348 *val = data->ps;
1349 return 0;
1350 }
1351
hwsim_fops_ps_write(void * dat,u64 val)1352 static int hwsim_fops_ps_write(void *dat, u64 val)
1353 {
1354 struct mac80211_hwsim_data *data = dat;
1355 enum ps_mode old_ps;
1356
1357 if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
1358 val != PS_MANUAL_POLL)
1359 return -EINVAL;
1360
1361 old_ps = data->ps;
1362 data->ps = val;
1363
1364 if (val == PS_MANUAL_POLL) {
1365 ieee80211_iterate_active_interfaces(data->hw,
1366 hwsim_send_ps_poll, data);
1367 data->ps_poll_pending = true;
1368 } else if (old_ps == PS_DISABLED && val != PS_DISABLED) {
1369 ieee80211_iterate_active_interfaces(data->hw,
1370 hwsim_send_nullfunc_ps,
1371 data);
1372 } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
1373 ieee80211_iterate_active_interfaces(data->hw,
1374 hwsim_send_nullfunc_no_ps,
1375 data);
1376 }
1377
1378 return 0;
1379 }
1380
1381 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
1382 "%llu\n");
1383
1384
hwsim_fops_group_read(void * dat,u64 * val)1385 static int hwsim_fops_group_read(void *dat, u64 *val)
1386 {
1387 struct mac80211_hwsim_data *data = dat;
1388 *val = data->group;
1389 return 0;
1390 }
1391
hwsim_fops_group_write(void * dat,u64 val)1392 static int hwsim_fops_group_write(void *dat, u64 val)
1393 {
1394 struct mac80211_hwsim_data *data = dat;
1395 data->group = val;
1396 return 0;
1397 }
1398
1399 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
1400 hwsim_fops_group_read, hwsim_fops_group_write,
1401 "%llx\n");
1402
get_hwsim_data_ref_from_addr(struct mac_address * addr)1403 struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(
1404 struct mac_address *addr)
1405 {
1406 struct mac80211_hwsim_data *data;
1407 bool _found = false;
1408
1409 spin_lock_bh(&hwsim_radio_lock);
1410 list_for_each_entry(data, &hwsim_radios, list) {
1411 if (memcmp(data->addresses[1].addr, addr,
1412 sizeof(struct mac_address)) == 0) {
1413 _found = true;
1414 break;
1415 }
1416 }
1417 spin_unlock_bh(&hwsim_radio_lock);
1418
1419 if (!_found)
1420 return NULL;
1421
1422 return data;
1423 }
1424
hwsim_tx_info_frame_received_nl(struct sk_buff * skb_2,struct genl_info * info)1425 static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
1426 struct genl_info *info)
1427 {
1428
1429 struct ieee80211_hdr *hdr;
1430 struct mac80211_hwsim_data *data2;
1431 struct ieee80211_tx_info *txi;
1432 struct hwsim_tx_rate *tx_attempts;
1433 struct sk_buff __user *ret_skb;
1434 struct sk_buff *skb, *tmp;
1435 struct mac_address *src;
1436 unsigned int hwsim_flags;
1437
1438 int i;
1439 bool found = false;
1440
1441 if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
1442 !info->attrs[HWSIM_ATTR_FLAGS] ||
1443 !info->attrs[HWSIM_ATTR_COOKIE] ||
1444 !info->attrs[HWSIM_ATTR_TX_INFO])
1445 goto out;
1446
1447 src = (struct mac_address *)nla_data(
1448 info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
1449 hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
1450
1451 ret_skb = (struct sk_buff __user *)
1452 (unsigned long) nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
1453
1454 data2 = get_hwsim_data_ref_from_addr(src);
1455
1456 if (data2 == NULL)
1457 goto out;
1458
1459 /* look for the skb matching the cookie passed back from user */
1460 skb_queue_walk_safe(&data2->pending, skb, tmp) {
1461 if (skb == ret_skb) {
1462 skb_unlink(skb, &data2->pending);
1463 found = true;
1464 break;
1465 }
1466 }
1467
1468 /* not found */
1469 if (!found)
1470 goto out;
1471
1472 /* Tx info received because the frame was broadcasted on user space,
1473 so we get all the necessary info: tx attempts and skb control buff */
1474
1475 tx_attempts = (struct hwsim_tx_rate *)nla_data(
1476 info->attrs[HWSIM_ATTR_TX_INFO]);
1477
1478 /* now send back TX status */
1479 txi = IEEE80211_SKB_CB(skb);
1480
1481 if (txi->control.vif)
1482 hwsim_check_magic(txi->control.vif);
1483 if (txi->control.sta)
1484 hwsim_check_sta_magic(txi->control.sta);
1485
1486 ieee80211_tx_info_clear_status(txi);
1487
1488 for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
1489 txi->status.rates[i].idx = tx_attempts[i].idx;
1490 txi->status.rates[i].count = tx_attempts[i].count;
1491 /*txi->status.rates[i].flags = 0;*/
1492 }
1493
1494 txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
1495
1496 if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
1497 (hwsim_flags & HWSIM_TX_STAT_ACK)) {
1498 if (skb->len >= 16) {
1499 hdr = (struct ieee80211_hdr *) skb->data;
1500 mac80211_hwsim_monitor_ack(data2->hw, hdr->addr2);
1501 }
1502 }
1503 ieee80211_tx_status_irqsafe(data2->hw, skb);
1504 return 0;
1505 out:
1506 return -EINVAL;
1507
1508 }
1509
hwsim_cloned_frame_received_nl(struct sk_buff * skb_2,struct genl_info * info)1510 static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
1511 struct genl_info *info)
1512 {
1513
1514 struct mac80211_hwsim_data *data2;
1515 struct ieee80211_rx_status rx_status;
1516 struct mac_address *dst;
1517 int frame_data_len;
1518 char *frame_data;
1519 struct sk_buff *skb = NULL;
1520
1521 if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
1522 !info->attrs[HWSIM_ATTR_FRAME] ||
1523 !info->attrs[HWSIM_ATTR_RX_RATE] ||
1524 !info->attrs[HWSIM_ATTR_SIGNAL])
1525 goto out;
1526
1527 dst = (struct mac_address *)nla_data(
1528 info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
1529
1530 frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
1531 frame_data = (char *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
1532
1533 /* Allocate new skb here */
1534 skb = alloc_skb(frame_data_len, GFP_KERNEL);
1535 if (skb == NULL)
1536 goto err;
1537
1538 if (frame_data_len <= IEEE80211_MAX_DATA_LEN) {
1539 /* Copy the data */
1540 memcpy(skb_put(skb, frame_data_len), frame_data,
1541 frame_data_len);
1542 } else
1543 goto err;
1544
1545 data2 = get_hwsim_data_ref_from_addr(dst);
1546
1547 if (data2 == NULL)
1548 goto out;
1549
1550 /* check if radio is configured properly */
1551
1552 if (data2->idle || !data2->started || !data2->channel)
1553 goto out;
1554
1555 /*A frame is received from user space*/
1556 memset(&rx_status, 0, sizeof(rx_status));
1557 rx_status.freq = data2->channel->center_freq;
1558 rx_status.band = data2->channel->band;
1559 rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
1560 rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
1561
1562 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
1563 ieee80211_rx_irqsafe(data2->hw, skb);
1564
1565 return 0;
1566 err:
1567 printk(KERN_DEBUG "mac80211_hwsim: error occured in %s\n", __func__);
1568 goto out;
1569 out:
1570 dev_kfree_skb(skb);
1571 return -EINVAL;
1572 }
1573
hwsim_register_received_nl(struct sk_buff * skb_2,struct genl_info * info)1574 static int hwsim_register_received_nl(struct sk_buff *skb_2,
1575 struct genl_info *info)
1576 {
1577 if (info == NULL)
1578 goto out;
1579
1580 wmediumd_pid = info->snd_pid;
1581
1582 printk(KERN_DEBUG "mac80211_hwsim: received a REGISTER, "
1583 "switching to wmediumd mode with pid %d\n", info->snd_pid);
1584
1585 return 0;
1586 out:
1587 printk(KERN_DEBUG "mac80211_hwsim: error occured in %s\n", __func__);
1588 return -EINVAL;
1589 }
1590
1591 /* Generic Netlink operations array */
1592 static struct genl_ops hwsim_ops[] = {
1593 {
1594 .cmd = HWSIM_CMD_REGISTER,
1595 .policy = hwsim_genl_policy,
1596 .doit = hwsim_register_received_nl,
1597 .flags = GENL_ADMIN_PERM,
1598 },
1599 {
1600 .cmd = HWSIM_CMD_FRAME,
1601 .policy = hwsim_genl_policy,
1602 .doit = hwsim_cloned_frame_received_nl,
1603 },
1604 {
1605 .cmd = HWSIM_CMD_TX_INFO_FRAME,
1606 .policy = hwsim_genl_policy,
1607 .doit = hwsim_tx_info_frame_received_nl,
1608 },
1609 };
1610
mac80211_hwsim_netlink_notify(struct notifier_block * nb,unsigned long state,void * _notify)1611 static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
1612 unsigned long state,
1613 void *_notify)
1614 {
1615 struct netlink_notify *notify = _notify;
1616
1617 if (state != NETLINK_URELEASE)
1618 return NOTIFY_DONE;
1619
1620 if (notify->pid == wmediumd_pid) {
1621 printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
1622 " socket, switching to perfect channel medium\n");
1623 wmediumd_pid = 0;
1624 }
1625 return NOTIFY_DONE;
1626
1627 }
1628
1629 static struct notifier_block hwsim_netlink_notifier = {
1630 .notifier_call = mac80211_hwsim_netlink_notify,
1631 };
1632
hwsim_init_netlink(void)1633 static int hwsim_init_netlink(void)
1634 {
1635 int rc;
1636 printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
1637
1638 rc = genl_register_family_with_ops(&hwsim_genl_family,
1639 hwsim_ops, ARRAY_SIZE(hwsim_ops));
1640 if (rc)
1641 goto failure;
1642
1643 rc = netlink_register_notifier(&hwsim_netlink_notifier);
1644 if (rc)
1645 goto failure;
1646
1647 return 0;
1648
1649 failure:
1650 printk(KERN_DEBUG "mac80211_hwsim: error occured in %s\n", __func__);
1651 return -EINVAL;
1652 }
1653
hwsim_exit_netlink(void)1654 static void hwsim_exit_netlink(void)
1655 {
1656 int ret;
1657
1658 printk(KERN_INFO "mac80211_hwsim: closing netlink\n");
1659 /* unregister the notifier */
1660 netlink_unregister_notifier(&hwsim_netlink_notifier);
1661 /* unregister the family */
1662 ret = genl_unregister_family(&hwsim_genl_family);
1663 if (ret)
1664 printk(KERN_DEBUG "mac80211_hwsim: "
1665 "unregister family %i\n", ret);
1666 }
1667
init_mac80211_hwsim(void)1668 static int __init init_mac80211_hwsim(void)
1669 {
1670 int i, err = 0;
1671 u8 addr[ETH_ALEN];
1672 struct mac80211_hwsim_data *data;
1673 struct ieee80211_hw *hw;
1674 enum ieee80211_band band;
1675
1676 if (radios < 1 || radios > 100)
1677 return -EINVAL;
1678
1679 if (fake_hw_scan) {
1680 mac80211_hwsim_ops.hw_scan = mac80211_hwsim_hw_scan;
1681 mac80211_hwsim_ops.sw_scan_start = NULL;
1682 mac80211_hwsim_ops.sw_scan_complete = NULL;
1683 }
1684
1685 spin_lock_init(&hwsim_radio_lock);
1686 INIT_LIST_HEAD(&hwsim_radios);
1687
1688 hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
1689 if (IS_ERR(hwsim_class))
1690 return PTR_ERR(hwsim_class);
1691
1692 memset(addr, 0, ETH_ALEN);
1693 addr[0] = 0x02;
1694
1695 for (i = 0; i < radios; i++) {
1696 printk(KERN_DEBUG "mac80211_hwsim: Initializing radio %d\n",
1697 i);
1698 hw = ieee80211_alloc_hw(sizeof(*data), &mac80211_hwsim_ops);
1699 if (!hw) {
1700 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw "
1701 "failed\n");
1702 err = -ENOMEM;
1703 goto failed;
1704 }
1705 data = hw->priv;
1706 data->hw = hw;
1707
1708 data->dev = device_create(hwsim_class, NULL, 0, hw,
1709 "hwsim%d", i);
1710 if (IS_ERR(data->dev)) {
1711 printk(KERN_DEBUG
1712 "mac80211_hwsim: device_create "
1713 "failed (%ld)\n", PTR_ERR(data->dev));
1714 err = -ENOMEM;
1715 goto failed_drvdata;
1716 }
1717 data->dev->driver = &mac80211_hwsim_driver;
1718 skb_queue_head_init(&data->pending);
1719
1720 SET_IEEE80211_DEV(hw, data->dev);
1721 addr[3] = i >> 8;
1722 addr[4] = i;
1723 memcpy(data->addresses[0].addr, addr, ETH_ALEN);
1724 memcpy(data->addresses[1].addr, addr, ETH_ALEN);
1725 data->addresses[1].addr[0] |= 0x40;
1726 hw->wiphy->n_addresses = 2;
1727 hw->wiphy->addresses = data->addresses;
1728
1729 if (fake_hw_scan) {
1730 hw->wiphy->max_scan_ssids = 255;
1731 hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
1732 }
1733
1734 hw->channel_change_time = 1;
1735 hw->queues = 4;
1736 hw->wiphy->interface_modes =
1737 BIT(NL80211_IFTYPE_STATION) |
1738 BIT(NL80211_IFTYPE_AP) |
1739 BIT(NL80211_IFTYPE_P2P_CLIENT) |
1740 BIT(NL80211_IFTYPE_P2P_GO) |
1741 BIT(NL80211_IFTYPE_ADHOC) |
1742 BIT(NL80211_IFTYPE_MESH_POINT);
1743
1744 hw->flags = IEEE80211_HW_MFP_CAPABLE |
1745 IEEE80211_HW_SIGNAL_DBM |
1746 IEEE80211_HW_SUPPORTS_STATIC_SMPS |
1747 IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
1748 IEEE80211_HW_AMPDU_AGGREGATION;
1749
1750 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS;
1751
1752 /* ask mac80211 to reserve space for magic */
1753 hw->vif_data_size = sizeof(struct hwsim_vif_priv);
1754 hw->sta_data_size = sizeof(struct hwsim_sta_priv);
1755
1756 memcpy(data->channels_2ghz, hwsim_channels_2ghz,
1757 sizeof(hwsim_channels_2ghz));
1758 memcpy(data->channels_5ghz, hwsim_channels_5ghz,
1759 sizeof(hwsim_channels_5ghz));
1760 memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
1761
1762 for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) {
1763 struct ieee80211_supported_band *sband = &data->bands[band];
1764 switch (band) {
1765 case IEEE80211_BAND_2GHZ:
1766 sband->channels = data->channels_2ghz;
1767 sband->n_channels =
1768 ARRAY_SIZE(hwsim_channels_2ghz);
1769 sband->bitrates = data->rates;
1770 sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
1771 break;
1772 case IEEE80211_BAND_5GHZ:
1773 sband->channels = data->channels_5ghz;
1774 sband->n_channels =
1775 ARRAY_SIZE(hwsim_channels_5ghz);
1776 sband->bitrates = data->rates + 4;
1777 sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
1778 break;
1779 default:
1780 break;
1781 }
1782
1783 sband->ht_cap.ht_supported = true;
1784 sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
1785 IEEE80211_HT_CAP_GRN_FLD |
1786 IEEE80211_HT_CAP_SGI_40 |
1787 IEEE80211_HT_CAP_DSSSCCK40;
1788 sband->ht_cap.ampdu_factor = 0x3;
1789 sband->ht_cap.ampdu_density = 0x6;
1790 memset(&sband->ht_cap.mcs, 0,
1791 sizeof(sband->ht_cap.mcs));
1792 sband->ht_cap.mcs.rx_mask[0] = 0xff;
1793 sband->ht_cap.mcs.rx_mask[1] = 0xff;
1794 sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
1795
1796 hw->wiphy->bands[band] = sband;
1797 }
1798 /* By default all radios are belonging to the first group */
1799 data->group = 1;
1800 mutex_init(&data->mutex);
1801
1802 /* Enable frame retransmissions for lossy channels */
1803 hw->max_rates = 4;
1804 hw->max_rate_tries = 11;
1805
1806 /* Work to be done prior to ieee80211_register_hw() */
1807 switch (regtest) {
1808 case HWSIM_REGTEST_DISABLED:
1809 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
1810 case HWSIM_REGTEST_DRIVER_REG_ALL:
1811 case HWSIM_REGTEST_DIFF_COUNTRY:
1812 /*
1813 * Nothing to be done for driver regulatory domain
1814 * hints prior to ieee80211_register_hw()
1815 */
1816 break;
1817 case HWSIM_REGTEST_WORLD_ROAM:
1818 if (i == 0) {
1819 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1820 wiphy_apply_custom_regulatory(hw->wiphy,
1821 &hwsim_world_regdom_custom_01);
1822 }
1823 break;
1824 case HWSIM_REGTEST_CUSTOM_WORLD:
1825 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1826 wiphy_apply_custom_regulatory(hw->wiphy,
1827 &hwsim_world_regdom_custom_01);
1828 break;
1829 case HWSIM_REGTEST_CUSTOM_WORLD_2:
1830 if (i == 0) {
1831 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1832 wiphy_apply_custom_regulatory(hw->wiphy,
1833 &hwsim_world_regdom_custom_01);
1834 } else if (i == 1) {
1835 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1836 wiphy_apply_custom_regulatory(hw->wiphy,
1837 &hwsim_world_regdom_custom_02);
1838 }
1839 break;
1840 case HWSIM_REGTEST_STRICT_ALL:
1841 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1842 break;
1843 case HWSIM_REGTEST_STRICT_FOLLOW:
1844 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
1845 if (i == 0)
1846 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1847 break;
1848 case HWSIM_REGTEST_ALL:
1849 if (i == 0) {
1850 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1851 wiphy_apply_custom_regulatory(hw->wiphy,
1852 &hwsim_world_regdom_custom_01);
1853 } else if (i == 1) {
1854 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1855 wiphy_apply_custom_regulatory(hw->wiphy,
1856 &hwsim_world_regdom_custom_02);
1857 } else if (i == 4)
1858 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1859 break;
1860 default:
1861 break;
1862 }
1863
1864 /* give the regulatory workqueue a chance to run */
1865 if (regtest)
1866 schedule_timeout_interruptible(1);
1867 err = ieee80211_register_hw(hw);
1868 if (err < 0) {
1869 printk(KERN_DEBUG "mac80211_hwsim: "
1870 "ieee80211_register_hw failed (%d)\n", err);
1871 goto failed_hw;
1872 }
1873
1874 /* Work to be done after to ieee80211_register_hw() */
1875 switch (regtest) {
1876 case HWSIM_REGTEST_WORLD_ROAM:
1877 case HWSIM_REGTEST_DISABLED:
1878 break;
1879 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
1880 if (!i)
1881 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1882 break;
1883 case HWSIM_REGTEST_DRIVER_REG_ALL:
1884 case HWSIM_REGTEST_STRICT_ALL:
1885 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1886 break;
1887 case HWSIM_REGTEST_DIFF_COUNTRY:
1888 if (i < ARRAY_SIZE(hwsim_alpha2s))
1889 regulatory_hint(hw->wiphy, hwsim_alpha2s[i]);
1890 break;
1891 case HWSIM_REGTEST_CUSTOM_WORLD:
1892 case HWSIM_REGTEST_CUSTOM_WORLD_2:
1893 /*
1894 * Nothing to be done for custom world regulatory
1895 * domains after to ieee80211_register_hw
1896 */
1897 break;
1898 case HWSIM_REGTEST_STRICT_FOLLOW:
1899 if (i == 0)
1900 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1901 break;
1902 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
1903 if (i == 0)
1904 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1905 else if (i == 1)
1906 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
1907 break;
1908 case HWSIM_REGTEST_ALL:
1909 if (i == 2)
1910 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1911 else if (i == 3)
1912 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
1913 else if (i == 4)
1914 regulatory_hint(hw->wiphy, hwsim_alpha2s[2]);
1915 break;
1916 default:
1917 break;
1918 }
1919
1920 wiphy_debug(hw->wiphy, "hwaddr %pm registered\n",
1921 hw->wiphy->perm_addr);
1922
1923 data->debugfs = debugfs_create_dir("hwsim",
1924 hw->wiphy->debugfsdir);
1925 data->debugfs_ps = debugfs_create_file("ps", 0666,
1926 data->debugfs, data,
1927 &hwsim_fops_ps);
1928 data->debugfs_group = debugfs_create_file("group", 0666,
1929 data->debugfs, data,
1930 &hwsim_fops_group);
1931
1932 setup_timer(&data->beacon_timer, mac80211_hwsim_beacon,
1933 (unsigned long) hw);
1934
1935 list_add_tail(&data->list, &hwsim_radios);
1936 }
1937
1938 hwsim_mon = alloc_netdev(0, "hwsim%d", hwsim_mon_setup);
1939 if (hwsim_mon == NULL)
1940 goto failed;
1941
1942 rtnl_lock();
1943
1944 err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
1945 if (err < 0)
1946 goto failed_mon;
1947
1948
1949 err = register_netdevice(hwsim_mon);
1950 if (err < 0)
1951 goto failed_mon;
1952
1953 rtnl_unlock();
1954
1955 err = hwsim_init_netlink();
1956 if (err < 0)
1957 goto failed_nl;
1958
1959 return 0;
1960
1961 failed_nl:
1962 printk(KERN_DEBUG "mac_80211_hwsim: failed initializing netlink\n");
1963 return err;
1964
1965 failed_mon:
1966 rtnl_unlock();
1967 free_netdev(hwsim_mon);
1968 mac80211_hwsim_free();
1969 return err;
1970
1971 failed_hw:
1972 device_unregister(data->dev);
1973 failed_drvdata:
1974 ieee80211_free_hw(hw);
1975 failed:
1976 mac80211_hwsim_free();
1977 return err;
1978 }
1979
1980
exit_mac80211_hwsim(void)1981 static void __exit exit_mac80211_hwsim(void)
1982 {
1983 printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
1984
1985 hwsim_exit_netlink();
1986
1987 mac80211_hwsim_free();
1988 unregister_netdev(hwsim_mon);
1989 }
1990
1991
1992 module_init(init_mac80211_hwsim);
1993 module_exit(exit_mac80211_hwsim);
1994