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Merge branch 'x86-intel-mid-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
[mirror_ubuntu-bionic-kernel.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/platform_device.h>
29 #include <linux/debugfs.h>
30 #include <linux/module.h>
31 #include <linux/ktime.h>
32 #include <net/genetlink.h>
33 #include "mac80211_hwsim.h"
34
35 #define WARN_QUEUE 100
36 #define MAX_QUEUE 200
37
38 MODULE_AUTHOR("Jouni Malinen");
39 MODULE_DESCRIPTION("Software simulator of 802.11 radio(s) for mac80211");
40 MODULE_LICENSE("GPL");
41
42 static u32 wmediumd_portid;
43
44 static int radios = 2;
45 module_param(radios, int, 0444);
46 MODULE_PARM_DESC(radios, "Number of simulated radios");
47
48 static int channels = 1;
49 module_param(channels, int, 0444);
50 MODULE_PARM_DESC(channels, "Number of concurrent channels");
51
52 static bool paged_rx = false;
53 module_param(paged_rx, bool, 0644);
54 MODULE_PARM_DESC(paged_rx, "Use paged SKBs for RX instead of linear ones");
55
56 static bool rctbl = false;
57 module_param(rctbl, bool, 0444);
58 MODULE_PARM_DESC(rctbl, "Handle rate control table");
59
60 /**
61 * enum hwsim_regtest - the type of regulatory tests we offer
62 *
63 * These are the different values you can use for the regtest
64 * module parameter. This is useful to help test world roaming
65 * and the driver regulatory_hint() call and combinations of these.
66 * If you want to do specific alpha2 regulatory domain tests simply
67 * use the userspace regulatory request as that will be respected as
68 * well without the need of this module parameter. This is designed
69 * only for testing the driver regulatory request, world roaming
70 * and all possible combinations.
71 *
72 * @HWSIM_REGTEST_DISABLED: No regulatory tests are performed,
73 * this is the default value.
74 * @HWSIM_REGTEST_DRIVER_REG_FOLLOW: Used for testing the driver regulatory
75 * hint, only one driver regulatory hint will be sent as such the
76 * secondary radios are expected to follow.
77 * @HWSIM_REGTEST_DRIVER_REG_ALL: Used for testing the driver regulatory
78 * request with all radios reporting the same regulatory domain.
79 * @HWSIM_REGTEST_DIFF_COUNTRY: Used for testing the drivers calling
80 * different regulatory domains requests. Expected behaviour is for
81 * an intersection to occur but each device will still use their
82 * respective regulatory requested domains. Subsequent radios will
83 * use the resulting intersection.
84 * @HWSIM_REGTEST_WORLD_ROAM: Used for testing the world roaming. We accomplish
85 * this by using a custom beacon-capable regulatory domain for the first
86 * radio. All other device world roam.
87 * @HWSIM_REGTEST_CUSTOM_WORLD: Used for testing the custom world regulatory
88 * domain requests. All radios will adhere to this custom world regulatory
89 * domain.
90 * @HWSIM_REGTEST_CUSTOM_WORLD_2: Used for testing 2 custom world regulatory
91 * domain requests. The first radio will adhere to the first custom world
92 * regulatory domain, the second one to the second custom world regulatory
93 * domain. All other devices will world roam.
94 * @HWSIM_REGTEST_STRICT_FOLLOW_: Used for testing strict regulatory domain
95 * settings, only the first radio will send a regulatory domain request
96 * and use strict settings. The rest of the radios are expected to follow.
97 * @HWSIM_REGTEST_STRICT_ALL: Used for testing strict regulatory domain
98 * settings. All radios will adhere to this.
99 * @HWSIM_REGTEST_STRICT_AND_DRIVER_REG: Used for testing strict regulatory
100 * domain settings, combined with secondary driver regulatory domain
101 * settings. The first radio will get a strict regulatory domain setting
102 * using the first driver regulatory request and the second radio will use
103 * non-strict settings using the second driver regulatory request. All
104 * other devices should follow the intersection created between the
105 * first two.
106 * @HWSIM_REGTEST_ALL: Used for testing every possible mix. You will need
107 * at least 6 radios for a complete test. We will test in this order:
108 * 1 - driver custom world regulatory domain
109 * 2 - second custom world regulatory domain
110 * 3 - first driver regulatory domain request
111 * 4 - second driver regulatory domain request
112 * 5 - strict regulatory domain settings using the third driver regulatory
113 * domain request
114 * 6 and on - should follow the intersection of the 3rd, 4rth and 5th radio
115 * regulatory requests.
116 */
117 enum hwsim_regtest {
118 HWSIM_REGTEST_DISABLED = 0,
119 HWSIM_REGTEST_DRIVER_REG_FOLLOW = 1,
120 HWSIM_REGTEST_DRIVER_REG_ALL = 2,
121 HWSIM_REGTEST_DIFF_COUNTRY = 3,
122 HWSIM_REGTEST_WORLD_ROAM = 4,
123 HWSIM_REGTEST_CUSTOM_WORLD = 5,
124 HWSIM_REGTEST_CUSTOM_WORLD_2 = 6,
125 HWSIM_REGTEST_STRICT_FOLLOW = 7,
126 HWSIM_REGTEST_STRICT_ALL = 8,
127 HWSIM_REGTEST_STRICT_AND_DRIVER_REG = 9,
128 HWSIM_REGTEST_ALL = 10,
129 };
130
131 /* Set to one of the HWSIM_REGTEST_* values above */
132 static int regtest = HWSIM_REGTEST_DISABLED;
133 module_param(regtest, int, 0444);
134 MODULE_PARM_DESC(regtest, "The type of regulatory test we want to run");
135
136 static const char *hwsim_alpha2s[] = {
137 "FI",
138 "AL",
139 "US",
140 "DE",
141 "JP",
142 "AL",
143 };
144
145 static const struct ieee80211_regdomain hwsim_world_regdom_custom_01 = {
146 .n_reg_rules = 4,
147 .alpha2 = "99",
148 .reg_rules = {
149 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
150 REG_RULE(2484-10, 2484+10, 40, 0, 20, 0),
151 REG_RULE(5150-10, 5240+10, 40, 0, 30, 0),
152 REG_RULE(5745-10, 5825+10, 40, 0, 30, 0),
153 }
154 };
155
156 static const struct ieee80211_regdomain hwsim_world_regdom_custom_02 = {
157 .n_reg_rules = 2,
158 .alpha2 = "99",
159 .reg_rules = {
160 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
161 REG_RULE(5725-10, 5850+10, 40, 0, 30,
162 NL80211_RRF_NO_IR),
163 }
164 };
165
166 static const struct ieee80211_regdomain *hwsim_world_regdom_custom[] = {
167 &hwsim_world_regdom_custom_01,
168 &hwsim_world_regdom_custom_02,
169 };
170
171 struct hwsim_vif_priv {
172 u32 magic;
173 u8 bssid[ETH_ALEN];
174 bool assoc;
175 bool bcn_en;
176 u16 aid;
177 };
178
179 #define HWSIM_VIF_MAGIC 0x69537748
180
181 static inline void hwsim_check_magic(struct ieee80211_vif *vif)
182 {
183 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
184 WARN(vp->magic != HWSIM_VIF_MAGIC,
185 "Invalid VIF (%p) magic %#x, %pM, %d/%d\n",
186 vif, vp->magic, vif->addr, vif->type, vif->p2p);
187 }
188
189 static inline void hwsim_set_magic(struct ieee80211_vif *vif)
190 {
191 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
192 vp->magic = HWSIM_VIF_MAGIC;
193 }
194
195 static inline void hwsim_clear_magic(struct ieee80211_vif *vif)
196 {
197 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
198 vp->magic = 0;
199 }
200
201 struct hwsim_sta_priv {
202 u32 magic;
203 };
204
205 #define HWSIM_STA_MAGIC 0x6d537749
206
207 static inline void hwsim_check_sta_magic(struct ieee80211_sta *sta)
208 {
209 struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
210 WARN_ON(sp->magic != HWSIM_STA_MAGIC);
211 }
212
213 static inline void hwsim_set_sta_magic(struct ieee80211_sta *sta)
214 {
215 struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
216 sp->magic = HWSIM_STA_MAGIC;
217 }
218
219 static inline void hwsim_clear_sta_magic(struct ieee80211_sta *sta)
220 {
221 struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
222 sp->magic = 0;
223 }
224
225 struct hwsim_chanctx_priv {
226 u32 magic;
227 };
228
229 #define HWSIM_CHANCTX_MAGIC 0x6d53774a
230
231 static inline void hwsim_check_chanctx_magic(struct ieee80211_chanctx_conf *c)
232 {
233 struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
234 WARN_ON(cp->magic != HWSIM_CHANCTX_MAGIC);
235 }
236
237 static inline void hwsim_set_chanctx_magic(struct ieee80211_chanctx_conf *c)
238 {
239 struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
240 cp->magic = HWSIM_CHANCTX_MAGIC;
241 }
242
243 static inline void hwsim_clear_chanctx_magic(struct ieee80211_chanctx_conf *c)
244 {
245 struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
246 cp->magic = 0;
247 }
248
249 static struct class *hwsim_class;
250
251 static struct net_device *hwsim_mon; /* global monitor netdev */
252
253 #define CHAN2G(_freq) { \
254 .band = IEEE80211_BAND_2GHZ, \
255 .center_freq = (_freq), \
256 .hw_value = (_freq), \
257 .max_power = 20, \
258 }
259
260 #define CHAN5G(_freq) { \
261 .band = IEEE80211_BAND_5GHZ, \
262 .center_freq = (_freq), \
263 .hw_value = (_freq), \
264 .max_power = 20, \
265 }
266
267 static const struct ieee80211_channel hwsim_channels_2ghz[] = {
268 CHAN2G(2412), /* Channel 1 */
269 CHAN2G(2417), /* Channel 2 */
270 CHAN2G(2422), /* Channel 3 */
271 CHAN2G(2427), /* Channel 4 */
272 CHAN2G(2432), /* Channel 5 */
273 CHAN2G(2437), /* Channel 6 */
274 CHAN2G(2442), /* Channel 7 */
275 CHAN2G(2447), /* Channel 8 */
276 CHAN2G(2452), /* Channel 9 */
277 CHAN2G(2457), /* Channel 10 */
278 CHAN2G(2462), /* Channel 11 */
279 CHAN2G(2467), /* Channel 12 */
280 CHAN2G(2472), /* Channel 13 */
281 CHAN2G(2484), /* Channel 14 */
282 };
283
284 static const struct ieee80211_channel hwsim_channels_5ghz[] = {
285 CHAN5G(5180), /* Channel 36 */
286 CHAN5G(5200), /* Channel 40 */
287 CHAN5G(5220), /* Channel 44 */
288 CHAN5G(5240), /* Channel 48 */
289
290 CHAN5G(5260), /* Channel 52 */
291 CHAN5G(5280), /* Channel 56 */
292 CHAN5G(5300), /* Channel 60 */
293 CHAN5G(5320), /* Channel 64 */
294
295 CHAN5G(5500), /* Channel 100 */
296 CHAN5G(5520), /* Channel 104 */
297 CHAN5G(5540), /* Channel 108 */
298 CHAN5G(5560), /* Channel 112 */
299 CHAN5G(5580), /* Channel 116 */
300 CHAN5G(5600), /* Channel 120 */
301 CHAN5G(5620), /* Channel 124 */
302 CHAN5G(5640), /* Channel 128 */
303 CHAN5G(5660), /* Channel 132 */
304 CHAN5G(5680), /* Channel 136 */
305 CHAN5G(5700), /* Channel 140 */
306
307 CHAN5G(5745), /* Channel 149 */
308 CHAN5G(5765), /* Channel 153 */
309 CHAN5G(5785), /* Channel 157 */
310 CHAN5G(5805), /* Channel 161 */
311 CHAN5G(5825), /* Channel 165 */
312 };
313
314 static const struct ieee80211_rate hwsim_rates[] = {
315 { .bitrate = 10 },
316 { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
317 { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
318 { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
319 { .bitrate = 60 },
320 { .bitrate = 90 },
321 { .bitrate = 120 },
322 { .bitrate = 180 },
323 { .bitrate = 240 },
324 { .bitrate = 360 },
325 { .bitrate = 480 },
326 { .bitrate = 540 }
327 };
328
329 static const struct ieee80211_iface_limit hwsim_if_limits[] = {
330 { .max = 1, .types = BIT(NL80211_IFTYPE_ADHOC) },
331 { .max = 2048, .types = BIT(NL80211_IFTYPE_STATION) |
332 BIT(NL80211_IFTYPE_P2P_CLIENT) |
333 #ifdef CONFIG_MAC80211_MESH
334 BIT(NL80211_IFTYPE_MESH_POINT) |
335 #endif
336 BIT(NL80211_IFTYPE_AP) |
337 BIT(NL80211_IFTYPE_P2P_GO) },
338 { .max = 1, .types = BIT(NL80211_IFTYPE_P2P_DEVICE) },
339 };
340
341 static const struct ieee80211_iface_limit hwsim_if_dfs_limits[] = {
342 { .max = 8, .types = BIT(NL80211_IFTYPE_AP) },
343 };
344
345 static const struct ieee80211_iface_combination hwsim_if_comb[] = {
346 {
347 .limits = hwsim_if_limits,
348 .n_limits = ARRAY_SIZE(hwsim_if_limits),
349 .max_interfaces = 2048,
350 .num_different_channels = 1,
351 },
352 {
353 .limits = hwsim_if_dfs_limits,
354 .n_limits = ARRAY_SIZE(hwsim_if_dfs_limits),
355 .max_interfaces = 8,
356 .num_different_channels = 1,
357 .radar_detect_widths = BIT(NL80211_CHAN_WIDTH_20_NOHT) |
358 BIT(NL80211_CHAN_WIDTH_20) |
359 BIT(NL80211_CHAN_WIDTH_40) |
360 BIT(NL80211_CHAN_WIDTH_80) |
361 BIT(NL80211_CHAN_WIDTH_160),
362 }
363 };
364
365 static spinlock_t hwsim_radio_lock;
366 static struct list_head hwsim_radios;
367 static int hwsim_radio_idx;
368
369 static struct platform_driver mac80211_hwsim_driver = {
370 .driver = {
371 .name = "mac80211_hwsim",
372 .owner = THIS_MODULE,
373 },
374 };
375
376 struct mac80211_hwsim_data {
377 struct list_head list;
378 struct ieee80211_hw *hw;
379 struct device *dev;
380 struct ieee80211_supported_band bands[IEEE80211_NUM_BANDS];
381 struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)];
382 struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)];
383 struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
384 struct ieee80211_iface_combination if_combination;
385
386 struct mac_address addresses[2];
387 int channels, idx;
388
389 struct ieee80211_channel *tmp_chan;
390 struct delayed_work roc_done;
391 struct delayed_work hw_scan;
392 struct cfg80211_scan_request *hw_scan_request;
393 struct ieee80211_vif *hw_scan_vif;
394 int scan_chan_idx;
395
396 struct ieee80211_channel *channel;
397 u64 beacon_int /* beacon interval in us */;
398 unsigned int rx_filter;
399 bool started, idle, scanning;
400 struct mutex mutex;
401 struct tasklet_hrtimer beacon_timer;
402 enum ps_mode {
403 PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
404 } ps;
405 bool ps_poll_pending;
406 struct dentry *debugfs;
407
408 struct sk_buff_head pending; /* packets pending */
409 /*
410 * Only radios in the same group can communicate together (the
411 * channel has to match too). Each bit represents a group. A
412 * radio can be in more then one group.
413 */
414 u64 group;
415
416 int power_level;
417
418 /* difference between this hw's clock and the real clock, in usecs */
419 s64 tsf_offset;
420 s64 bcn_delta;
421 /* absolute beacon transmission time. Used to cover up "tx" delay. */
422 u64 abs_bcn_ts;
423 };
424
425
426 struct hwsim_radiotap_hdr {
427 struct ieee80211_radiotap_header hdr;
428 __le64 rt_tsft;
429 u8 rt_flags;
430 u8 rt_rate;
431 __le16 rt_channel;
432 __le16 rt_chbitmask;
433 } __packed;
434
435 struct hwsim_radiotap_ack_hdr {
436 struct ieee80211_radiotap_header hdr;
437 u8 rt_flags;
438 u8 pad;
439 __le16 rt_channel;
440 __le16 rt_chbitmask;
441 } __packed;
442
443 /* MAC80211_HWSIM netlinf family */
444 static struct genl_family hwsim_genl_family = {
445 .id = GENL_ID_GENERATE,
446 .hdrsize = 0,
447 .name = "MAC80211_HWSIM",
448 .version = 1,
449 .maxattr = HWSIM_ATTR_MAX,
450 };
451
452 /* MAC80211_HWSIM netlink policy */
453
454 static struct nla_policy hwsim_genl_policy[HWSIM_ATTR_MAX + 1] = {
455 [HWSIM_ATTR_ADDR_RECEIVER] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
456 [HWSIM_ATTR_ADDR_TRANSMITTER] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
457 [HWSIM_ATTR_FRAME] = { .type = NLA_BINARY,
458 .len = IEEE80211_MAX_DATA_LEN },
459 [HWSIM_ATTR_FLAGS] = { .type = NLA_U32 },
460 [HWSIM_ATTR_RX_RATE] = { .type = NLA_U32 },
461 [HWSIM_ATTR_SIGNAL] = { .type = NLA_U32 },
462 [HWSIM_ATTR_TX_INFO] = { .type = NLA_UNSPEC,
463 .len = IEEE80211_TX_MAX_RATES *
464 sizeof(struct hwsim_tx_rate)},
465 [HWSIM_ATTR_COOKIE] = { .type = NLA_U64 },
466 [HWSIM_ATTR_CHANNELS] = { .type = NLA_U32 },
467 [HWSIM_ATTR_RADIO_ID] = { .type = NLA_U32 },
468 [HWSIM_ATTR_REG_HINT_ALPHA2] = { .type = NLA_STRING, .len = 2 },
469 [HWSIM_ATTR_REG_CUSTOM_REG] = { .type = NLA_U32 },
470 [HWSIM_ATTR_REG_STRICT_REG] = { .type = NLA_FLAG },
471 };
472
473 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
474 struct sk_buff *skb,
475 struct ieee80211_channel *chan);
476
477 /* sysfs attributes */
478 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
479 {
480 struct mac80211_hwsim_data *data = dat;
481 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
482 struct sk_buff *skb;
483 struct ieee80211_pspoll *pspoll;
484
485 if (!vp->assoc)
486 return;
487
488 wiphy_debug(data->hw->wiphy,
489 "%s: send PS-Poll to %pM for aid %d\n",
490 __func__, vp->bssid, vp->aid);
491
492 skb = dev_alloc_skb(sizeof(*pspoll));
493 if (!skb)
494 return;
495 pspoll = (void *) skb_put(skb, sizeof(*pspoll));
496 pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
497 IEEE80211_STYPE_PSPOLL |
498 IEEE80211_FCTL_PM);
499 pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
500 memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
501 memcpy(pspoll->ta, mac, ETH_ALEN);
502
503 rcu_read_lock();
504 mac80211_hwsim_tx_frame(data->hw, skb,
505 rcu_dereference(vif->chanctx_conf)->def.chan);
506 rcu_read_unlock();
507 }
508
509 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
510 struct ieee80211_vif *vif, int ps)
511 {
512 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
513 struct sk_buff *skb;
514 struct ieee80211_hdr *hdr;
515
516 if (!vp->assoc)
517 return;
518
519 wiphy_debug(data->hw->wiphy,
520 "%s: send data::nullfunc to %pM ps=%d\n",
521 __func__, vp->bssid, ps);
522
523 skb = dev_alloc_skb(sizeof(*hdr));
524 if (!skb)
525 return;
526 hdr = (void *) skb_put(skb, sizeof(*hdr) - ETH_ALEN);
527 hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
528 IEEE80211_STYPE_NULLFUNC |
529 (ps ? IEEE80211_FCTL_PM : 0));
530 hdr->duration_id = cpu_to_le16(0);
531 memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
532 memcpy(hdr->addr2, mac, ETH_ALEN);
533 memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
534
535 rcu_read_lock();
536 mac80211_hwsim_tx_frame(data->hw, skb,
537 rcu_dereference(vif->chanctx_conf)->def.chan);
538 rcu_read_unlock();
539 }
540
541
542 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
543 struct ieee80211_vif *vif)
544 {
545 struct mac80211_hwsim_data *data = dat;
546 hwsim_send_nullfunc(data, mac, vif, 1);
547 }
548
549 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
550 struct ieee80211_vif *vif)
551 {
552 struct mac80211_hwsim_data *data = dat;
553 hwsim_send_nullfunc(data, mac, vif, 0);
554 }
555
556 static int hwsim_fops_ps_read(void *dat, u64 *val)
557 {
558 struct mac80211_hwsim_data *data = dat;
559 *val = data->ps;
560 return 0;
561 }
562
563 static int hwsim_fops_ps_write(void *dat, u64 val)
564 {
565 struct mac80211_hwsim_data *data = dat;
566 enum ps_mode old_ps;
567
568 if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
569 val != PS_MANUAL_POLL)
570 return -EINVAL;
571
572 old_ps = data->ps;
573 data->ps = val;
574
575 if (val == PS_MANUAL_POLL) {
576 ieee80211_iterate_active_interfaces(data->hw,
577 IEEE80211_IFACE_ITER_NORMAL,
578 hwsim_send_ps_poll, data);
579 data->ps_poll_pending = true;
580 } else if (old_ps == PS_DISABLED && val != PS_DISABLED) {
581 ieee80211_iterate_active_interfaces(data->hw,
582 IEEE80211_IFACE_ITER_NORMAL,
583 hwsim_send_nullfunc_ps,
584 data);
585 } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
586 ieee80211_iterate_active_interfaces(data->hw,
587 IEEE80211_IFACE_ITER_NORMAL,
588 hwsim_send_nullfunc_no_ps,
589 data);
590 }
591
592 return 0;
593 }
594
595 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
596 "%llu\n");
597
598 static int hwsim_write_simulate_radar(void *dat, u64 val)
599 {
600 struct mac80211_hwsim_data *data = dat;
601
602 ieee80211_radar_detected(data->hw);
603
604 return 0;
605 }
606
607 DEFINE_SIMPLE_ATTRIBUTE(hwsim_simulate_radar, NULL,
608 hwsim_write_simulate_radar, "%llu\n");
609
610 static int hwsim_fops_group_read(void *dat, u64 *val)
611 {
612 struct mac80211_hwsim_data *data = dat;
613 *val = data->group;
614 return 0;
615 }
616
617 static int hwsim_fops_group_write(void *dat, u64 val)
618 {
619 struct mac80211_hwsim_data *data = dat;
620 data->group = val;
621 return 0;
622 }
623
624 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
625 hwsim_fops_group_read, hwsim_fops_group_write,
626 "%llx\n");
627
628 static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
629 struct net_device *dev)
630 {
631 /* TODO: allow packet injection */
632 dev_kfree_skb(skb);
633 return NETDEV_TX_OK;
634 }
635
636 static inline u64 mac80211_hwsim_get_tsf_raw(void)
637 {
638 return ktime_to_us(ktime_get_real());
639 }
640
641 static __le64 __mac80211_hwsim_get_tsf(struct mac80211_hwsim_data *data)
642 {
643 u64 now = mac80211_hwsim_get_tsf_raw();
644 return cpu_to_le64(now + data->tsf_offset);
645 }
646
647 static u64 mac80211_hwsim_get_tsf(struct ieee80211_hw *hw,
648 struct ieee80211_vif *vif)
649 {
650 struct mac80211_hwsim_data *data = hw->priv;
651 return le64_to_cpu(__mac80211_hwsim_get_tsf(data));
652 }
653
654 static void mac80211_hwsim_set_tsf(struct ieee80211_hw *hw,
655 struct ieee80211_vif *vif, u64 tsf)
656 {
657 struct mac80211_hwsim_data *data = hw->priv;
658 u64 now = mac80211_hwsim_get_tsf(hw, vif);
659 u32 bcn_int = data->beacon_int;
660 s64 delta = tsf - now;
661
662 data->tsf_offset += delta;
663 /* adjust after beaconing with new timestamp at old TBTT */
664 data->bcn_delta = do_div(delta, bcn_int);
665 }
666
667 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
668 struct sk_buff *tx_skb,
669 struct ieee80211_channel *chan)
670 {
671 struct mac80211_hwsim_data *data = hw->priv;
672 struct sk_buff *skb;
673 struct hwsim_radiotap_hdr *hdr;
674 u16 flags;
675 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
676 struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
677
678 if (!netif_running(hwsim_mon))
679 return;
680
681 skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
682 if (skb == NULL)
683 return;
684
685 hdr = (struct hwsim_radiotap_hdr *) skb_push(skb, sizeof(*hdr));
686 hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
687 hdr->hdr.it_pad = 0;
688 hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
689 hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
690 (1 << IEEE80211_RADIOTAP_RATE) |
691 (1 << IEEE80211_RADIOTAP_TSFT) |
692 (1 << IEEE80211_RADIOTAP_CHANNEL));
693 hdr->rt_tsft = __mac80211_hwsim_get_tsf(data);
694 hdr->rt_flags = 0;
695 hdr->rt_rate = txrate->bitrate / 5;
696 hdr->rt_channel = cpu_to_le16(chan->center_freq);
697 flags = IEEE80211_CHAN_2GHZ;
698 if (txrate->flags & IEEE80211_RATE_ERP_G)
699 flags |= IEEE80211_CHAN_OFDM;
700 else
701 flags |= IEEE80211_CHAN_CCK;
702 hdr->rt_chbitmask = cpu_to_le16(flags);
703
704 skb->dev = hwsim_mon;
705 skb_set_mac_header(skb, 0);
706 skb->ip_summed = CHECKSUM_UNNECESSARY;
707 skb->pkt_type = PACKET_OTHERHOST;
708 skb->protocol = htons(ETH_P_802_2);
709 memset(skb->cb, 0, sizeof(skb->cb));
710 netif_rx(skb);
711 }
712
713
714 static void mac80211_hwsim_monitor_ack(struct ieee80211_channel *chan,
715 const u8 *addr)
716 {
717 struct sk_buff *skb;
718 struct hwsim_radiotap_ack_hdr *hdr;
719 u16 flags;
720 struct ieee80211_hdr *hdr11;
721
722 if (!netif_running(hwsim_mon))
723 return;
724
725 skb = dev_alloc_skb(100);
726 if (skb == NULL)
727 return;
728
729 hdr = (struct hwsim_radiotap_ack_hdr *) skb_put(skb, sizeof(*hdr));
730 hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
731 hdr->hdr.it_pad = 0;
732 hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
733 hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
734 (1 << IEEE80211_RADIOTAP_CHANNEL));
735 hdr->rt_flags = 0;
736 hdr->pad = 0;
737 hdr->rt_channel = cpu_to_le16(chan->center_freq);
738 flags = IEEE80211_CHAN_2GHZ;
739 hdr->rt_chbitmask = cpu_to_le16(flags);
740
741 hdr11 = (struct ieee80211_hdr *) skb_put(skb, 10);
742 hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
743 IEEE80211_STYPE_ACK);
744 hdr11->duration_id = cpu_to_le16(0);
745 memcpy(hdr11->addr1, addr, ETH_ALEN);
746
747 skb->dev = hwsim_mon;
748 skb_set_mac_header(skb, 0);
749 skb->ip_summed = CHECKSUM_UNNECESSARY;
750 skb->pkt_type = PACKET_OTHERHOST;
751 skb->protocol = htons(ETH_P_802_2);
752 memset(skb->cb, 0, sizeof(skb->cb));
753 netif_rx(skb);
754 }
755
756
757 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
758 struct sk_buff *skb)
759 {
760 switch (data->ps) {
761 case PS_DISABLED:
762 return true;
763 case PS_ENABLED:
764 return false;
765 case PS_AUTO_POLL:
766 /* TODO: accept (some) Beacons by default and other frames only
767 * if pending PS-Poll has been sent */
768 return true;
769 case PS_MANUAL_POLL:
770 /* Allow unicast frames to own address if there is a pending
771 * PS-Poll */
772 if (data->ps_poll_pending &&
773 memcmp(data->hw->wiphy->perm_addr, skb->data + 4,
774 ETH_ALEN) == 0) {
775 data->ps_poll_pending = false;
776 return true;
777 }
778 return false;
779 }
780
781 return true;
782 }
783
784
785 struct mac80211_hwsim_addr_match_data {
786 bool ret;
787 const u8 *addr;
788 };
789
790 static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
791 struct ieee80211_vif *vif)
792 {
793 struct mac80211_hwsim_addr_match_data *md = data;
794 if (memcmp(mac, md->addr, ETH_ALEN) == 0)
795 md->ret = true;
796 }
797
798
799 static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
800 const u8 *addr)
801 {
802 struct mac80211_hwsim_addr_match_data md;
803
804 if (memcmp(addr, data->hw->wiphy->perm_addr, ETH_ALEN) == 0)
805 return true;
806
807 md.ret = false;
808 md.addr = addr;
809 ieee80211_iterate_active_interfaces_atomic(data->hw,
810 IEEE80211_IFACE_ITER_NORMAL,
811 mac80211_hwsim_addr_iter,
812 &md);
813
814 return md.ret;
815 }
816
817 static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
818 struct sk_buff *my_skb,
819 int dst_portid)
820 {
821 struct sk_buff *skb;
822 struct mac80211_hwsim_data *data = hw->priv;
823 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) my_skb->data;
824 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(my_skb);
825 void *msg_head;
826 unsigned int hwsim_flags = 0;
827 int i;
828 struct hwsim_tx_rate tx_attempts[IEEE80211_TX_MAX_RATES];
829
830 if (data->ps != PS_DISABLED)
831 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
832 /* If the queue contains MAX_QUEUE skb's drop some */
833 if (skb_queue_len(&data->pending) >= MAX_QUEUE) {
834 /* Droping until WARN_QUEUE level */
835 while (skb_queue_len(&data->pending) >= WARN_QUEUE)
836 skb_dequeue(&data->pending);
837 }
838
839 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_ATOMIC);
840 if (skb == NULL)
841 goto nla_put_failure;
842
843 msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
844 HWSIM_CMD_FRAME);
845 if (msg_head == NULL) {
846 printk(KERN_DEBUG "mac80211_hwsim: problem with msg_head\n");
847 goto nla_put_failure;
848 }
849
850 if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
851 ETH_ALEN, data->addresses[1].addr))
852 goto nla_put_failure;
853
854 /* We get the skb->data */
855 if (nla_put(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data))
856 goto nla_put_failure;
857
858 /* We get the flags for this transmission, and we translate them to
859 wmediumd flags */
860
861 if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
862 hwsim_flags |= HWSIM_TX_CTL_REQ_TX_STATUS;
863
864 if (info->flags & IEEE80211_TX_CTL_NO_ACK)
865 hwsim_flags |= HWSIM_TX_CTL_NO_ACK;
866
867 if (nla_put_u32(skb, HWSIM_ATTR_FLAGS, hwsim_flags))
868 goto nla_put_failure;
869
870 /* We get the tx control (rate and retries) info*/
871
872 for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
873 tx_attempts[i].idx = info->status.rates[i].idx;
874 tx_attempts[i].count = info->status.rates[i].count;
875 }
876
877 if (nla_put(skb, HWSIM_ATTR_TX_INFO,
878 sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
879 tx_attempts))
880 goto nla_put_failure;
881
882 /* We create a cookie to identify this skb */
883 if (nla_put_u64(skb, HWSIM_ATTR_COOKIE, (unsigned long) my_skb))
884 goto nla_put_failure;
885
886 genlmsg_end(skb, msg_head);
887 genlmsg_unicast(&init_net, skb, dst_portid);
888
889 /* Enqueue the packet */
890 skb_queue_tail(&data->pending, my_skb);
891 return;
892
893 nla_put_failure:
894 printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
895 }
896
897 static bool hwsim_chans_compat(struct ieee80211_channel *c1,
898 struct ieee80211_channel *c2)
899 {
900 if (!c1 || !c2)
901 return false;
902
903 return c1->center_freq == c2->center_freq;
904 }
905
906 struct tx_iter_data {
907 struct ieee80211_channel *channel;
908 bool receive;
909 };
910
911 static void mac80211_hwsim_tx_iter(void *_data, u8 *addr,
912 struct ieee80211_vif *vif)
913 {
914 struct tx_iter_data *data = _data;
915
916 if (!vif->chanctx_conf)
917 return;
918
919 if (!hwsim_chans_compat(data->channel,
920 rcu_dereference(vif->chanctx_conf)->def.chan))
921 return;
922
923 data->receive = true;
924 }
925
926 static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
927 struct sk_buff *skb,
928 struct ieee80211_channel *chan)
929 {
930 struct mac80211_hwsim_data *data = hw->priv, *data2;
931 bool ack = false;
932 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
933 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
934 struct ieee80211_rx_status rx_status;
935 u64 now;
936
937 memset(&rx_status, 0, sizeof(rx_status));
938 rx_status.flag |= RX_FLAG_MACTIME_START;
939 rx_status.freq = chan->center_freq;
940 rx_status.band = chan->band;
941 if (info->control.rates[0].flags & IEEE80211_TX_RC_VHT_MCS) {
942 rx_status.rate_idx =
943 ieee80211_rate_get_vht_mcs(&info->control.rates[0]);
944 rx_status.vht_nss =
945 ieee80211_rate_get_vht_nss(&info->control.rates[0]);
946 rx_status.flag |= RX_FLAG_VHT;
947 } else {
948 rx_status.rate_idx = info->control.rates[0].idx;
949 if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
950 rx_status.flag |= RX_FLAG_HT;
951 }
952 if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
953 rx_status.flag |= RX_FLAG_40MHZ;
954 if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
955 rx_status.flag |= RX_FLAG_SHORT_GI;
956 /* TODO: simulate real signal strength (and optional packet loss) */
957 rx_status.signal = data->power_level - 50;
958
959 if (data->ps != PS_DISABLED)
960 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
961
962 /* release the skb's source info */
963 skb_orphan(skb);
964 skb_dst_drop(skb);
965 skb->mark = 0;
966 secpath_reset(skb);
967 nf_reset(skb);
968
969 /*
970 * Get absolute mactime here so all HWs RX at the "same time", and
971 * absolute TX time for beacon mactime so the timestamp matches.
972 * Giving beacons a different mactime than non-beacons looks messy, but
973 * it helps the Toffset be exact and a ~10us mactime discrepancy
974 * probably doesn't really matter.
975 */
976 if (ieee80211_is_beacon(hdr->frame_control) ||
977 ieee80211_is_probe_resp(hdr->frame_control))
978 now = data->abs_bcn_ts;
979 else
980 now = mac80211_hwsim_get_tsf_raw();
981
982 /* Copy skb to all enabled radios that are on the current frequency */
983 spin_lock(&hwsim_radio_lock);
984 list_for_each_entry(data2, &hwsim_radios, list) {
985 struct sk_buff *nskb;
986 struct tx_iter_data tx_iter_data = {
987 .receive = false,
988 .channel = chan,
989 };
990
991 if (data == data2)
992 continue;
993
994 if (!data2->started || (data2->idle && !data2->tmp_chan) ||
995 !hwsim_ps_rx_ok(data2, skb))
996 continue;
997
998 if (!(data->group & data2->group))
999 continue;
1000
1001 if (!hwsim_chans_compat(chan, data2->tmp_chan) &&
1002 !hwsim_chans_compat(chan, data2->channel)) {
1003 ieee80211_iterate_active_interfaces_atomic(
1004 data2->hw, IEEE80211_IFACE_ITER_NORMAL,
1005 mac80211_hwsim_tx_iter, &tx_iter_data);
1006 if (!tx_iter_data.receive)
1007 continue;
1008 }
1009
1010 /*
1011 * reserve some space for our vendor and the normal
1012 * radiotap header, since we're copying anyway
1013 */
1014 if (skb->len < PAGE_SIZE && paged_rx) {
1015 struct page *page = alloc_page(GFP_ATOMIC);
1016
1017 if (!page)
1018 continue;
1019
1020 nskb = dev_alloc_skb(128);
1021 if (!nskb) {
1022 __free_page(page);
1023 continue;
1024 }
1025
1026 memcpy(page_address(page), skb->data, skb->len);
1027 skb_add_rx_frag(nskb, 0, page, 0, skb->len, skb->len);
1028 } else {
1029 nskb = skb_copy(skb, GFP_ATOMIC);
1030 if (!nskb)
1031 continue;
1032 }
1033
1034 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
1035 ack = true;
1036
1037 rx_status.mactime = now + data2->tsf_offset;
1038 #if 0
1039 /*
1040 * Don't enable this code by default as the OUI 00:00:00
1041 * is registered to Xerox so we shouldn't use it here, it
1042 * might find its way into pcap files.
1043 * Note that this code requires the headroom in the SKB
1044 * that was allocated earlier.
1045 */
1046 rx_status.vendor_radiotap_oui[0] = 0x00;
1047 rx_status.vendor_radiotap_oui[1] = 0x00;
1048 rx_status.vendor_radiotap_oui[2] = 0x00;
1049 rx_status.vendor_radiotap_subns = 127;
1050 /*
1051 * Radiotap vendor namespaces can (and should) also be
1052 * split into fields by using the standard radiotap
1053 * presence bitmap mechanism. Use just BIT(0) here for
1054 * the presence bitmap.
1055 */
1056 rx_status.vendor_radiotap_bitmap = BIT(0);
1057 /* We have 8 bytes of (dummy) data */
1058 rx_status.vendor_radiotap_len = 8;
1059 /* For testing, also require it to be aligned */
1060 rx_status.vendor_radiotap_align = 8;
1061 /* push the data */
1062 memcpy(skb_push(nskb, 8), "ABCDEFGH", 8);
1063 #endif
1064
1065 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
1066 ieee80211_rx_irqsafe(data2->hw, nskb);
1067 }
1068 spin_unlock(&hwsim_radio_lock);
1069
1070 return ack;
1071 }
1072
1073 static void mac80211_hwsim_tx(struct ieee80211_hw *hw,
1074 struct ieee80211_tx_control *control,
1075 struct sk_buff *skb)
1076 {
1077 struct mac80211_hwsim_data *data = hw->priv;
1078 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1079 struct ieee80211_chanctx_conf *chanctx_conf;
1080 struct ieee80211_channel *channel;
1081 bool ack;
1082 u32 _portid;
1083
1084 if (WARN_ON(skb->len < 10)) {
1085 /* Should not happen; just a sanity check for addr1 use */
1086 ieee80211_free_txskb(hw, skb);
1087 return;
1088 }
1089
1090 if (data->channels == 1) {
1091 channel = data->channel;
1092 } else if (txi->hw_queue == 4) {
1093 channel = data->tmp_chan;
1094 } else {
1095 chanctx_conf = rcu_dereference(txi->control.vif->chanctx_conf);
1096 if (chanctx_conf)
1097 channel = chanctx_conf->def.chan;
1098 else
1099 channel = NULL;
1100 }
1101
1102 if (WARN(!channel, "TX w/o channel - queue = %d\n", txi->hw_queue)) {
1103 ieee80211_free_txskb(hw, skb);
1104 return;
1105 }
1106
1107 if (data->idle && !data->tmp_chan) {
1108 wiphy_debug(hw->wiphy, "Trying to TX when idle - reject\n");
1109 ieee80211_free_txskb(hw, skb);
1110 return;
1111 }
1112
1113 if (txi->control.vif)
1114 hwsim_check_magic(txi->control.vif);
1115 if (control->sta)
1116 hwsim_check_sta_magic(control->sta);
1117
1118 if (hw->flags & IEEE80211_HW_SUPPORTS_RC_TABLE)
1119 ieee80211_get_tx_rates(txi->control.vif, control->sta, skb,
1120 txi->control.rates,
1121 ARRAY_SIZE(txi->control.rates));
1122
1123 txi->rate_driver_data[0] = channel;
1124 mac80211_hwsim_monitor_rx(hw, skb, channel);
1125
1126 /* wmediumd mode check */
1127 _portid = ACCESS_ONCE(wmediumd_portid);
1128
1129 if (_portid)
1130 return mac80211_hwsim_tx_frame_nl(hw, skb, _portid);
1131
1132 /* NO wmediumd detected, perfect medium simulation */
1133 ack = mac80211_hwsim_tx_frame_no_nl(hw, skb, channel);
1134
1135 if (ack && skb->len >= 16) {
1136 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1137 mac80211_hwsim_monitor_ack(channel, hdr->addr2);
1138 }
1139
1140 ieee80211_tx_info_clear_status(txi);
1141
1142 /* frame was transmitted at most favorable rate at first attempt */
1143 txi->control.rates[0].count = 1;
1144 txi->control.rates[1].idx = -1;
1145
1146 if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
1147 txi->flags |= IEEE80211_TX_STAT_ACK;
1148 ieee80211_tx_status_irqsafe(hw, skb);
1149 }
1150
1151
1152 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
1153 {
1154 struct mac80211_hwsim_data *data = hw->priv;
1155 wiphy_debug(hw->wiphy, "%s\n", __func__);
1156 data->started = true;
1157 return 0;
1158 }
1159
1160
1161 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
1162 {
1163 struct mac80211_hwsim_data *data = hw->priv;
1164 data->started = false;
1165 tasklet_hrtimer_cancel(&data->beacon_timer);
1166 wiphy_debug(hw->wiphy, "%s\n", __func__);
1167 }
1168
1169
1170 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
1171 struct ieee80211_vif *vif)
1172 {
1173 wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1174 __func__, ieee80211_vif_type_p2p(vif),
1175 vif->addr);
1176 hwsim_set_magic(vif);
1177
1178 vif->cab_queue = 0;
1179 vif->hw_queue[IEEE80211_AC_VO] = 0;
1180 vif->hw_queue[IEEE80211_AC_VI] = 1;
1181 vif->hw_queue[IEEE80211_AC_BE] = 2;
1182 vif->hw_queue[IEEE80211_AC_BK] = 3;
1183
1184 return 0;
1185 }
1186
1187
1188 static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
1189 struct ieee80211_vif *vif,
1190 enum nl80211_iftype newtype,
1191 bool newp2p)
1192 {
1193 newtype = ieee80211_iftype_p2p(newtype, newp2p);
1194 wiphy_debug(hw->wiphy,
1195 "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
1196 __func__, ieee80211_vif_type_p2p(vif),
1197 newtype, vif->addr);
1198 hwsim_check_magic(vif);
1199
1200 /*
1201 * interface may change from non-AP to AP in
1202 * which case this needs to be set up again
1203 */
1204 vif->cab_queue = 0;
1205
1206 return 0;
1207 }
1208
1209 static void mac80211_hwsim_remove_interface(
1210 struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1211 {
1212 wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1213 __func__, ieee80211_vif_type_p2p(vif),
1214 vif->addr);
1215 hwsim_check_magic(vif);
1216 hwsim_clear_magic(vif);
1217 }
1218
1219 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
1220 struct sk_buff *skb,
1221 struct ieee80211_channel *chan)
1222 {
1223 u32 _pid = ACCESS_ONCE(wmediumd_portid);
1224
1225 if (hw->flags & IEEE80211_HW_SUPPORTS_RC_TABLE) {
1226 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1227 ieee80211_get_tx_rates(txi->control.vif, NULL, skb,
1228 txi->control.rates,
1229 ARRAY_SIZE(txi->control.rates));
1230 }
1231
1232 mac80211_hwsim_monitor_rx(hw, skb, chan);
1233
1234 if (_pid)
1235 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
1236
1237 mac80211_hwsim_tx_frame_no_nl(hw, skb, chan);
1238 dev_kfree_skb(skb);
1239 }
1240
1241 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
1242 struct ieee80211_vif *vif)
1243 {
1244 struct mac80211_hwsim_data *data = arg;
1245 struct ieee80211_hw *hw = data->hw;
1246 struct ieee80211_tx_info *info;
1247 struct ieee80211_rate *txrate;
1248 struct ieee80211_mgmt *mgmt;
1249 struct sk_buff *skb;
1250
1251 hwsim_check_magic(vif);
1252
1253 if (vif->type != NL80211_IFTYPE_AP &&
1254 vif->type != NL80211_IFTYPE_MESH_POINT &&
1255 vif->type != NL80211_IFTYPE_ADHOC)
1256 return;
1257
1258 skb = ieee80211_beacon_get(hw, vif);
1259 if (skb == NULL)
1260 return;
1261 info = IEEE80211_SKB_CB(skb);
1262 if (hw->flags & IEEE80211_HW_SUPPORTS_RC_TABLE)
1263 ieee80211_get_tx_rates(vif, NULL, skb,
1264 info->control.rates,
1265 ARRAY_SIZE(info->control.rates));
1266
1267 txrate = ieee80211_get_tx_rate(hw, info);
1268
1269 mgmt = (struct ieee80211_mgmt *) skb->data;
1270 /* fake header transmission time */
1271 data->abs_bcn_ts = mac80211_hwsim_get_tsf_raw();
1272 mgmt->u.beacon.timestamp = cpu_to_le64(data->abs_bcn_ts +
1273 data->tsf_offset +
1274 24 * 8 * 10 / txrate->bitrate);
1275
1276 mac80211_hwsim_tx_frame(hw, skb,
1277 rcu_dereference(vif->chanctx_conf)->def.chan);
1278 }
1279
1280 static enum hrtimer_restart
1281 mac80211_hwsim_beacon(struct hrtimer *timer)
1282 {
1283 struct mac80211_hwsim_data *data =
1284 container_of(timer, struct mac80211_hwsim_data,
1285 beacon_timer.timer);
1286 struct ieee80211_hw *hw = data->hw;
1287 u64 bcn_int = data->beacon_int;
1288 ktime_t next_bcn;
1289
1290 if (!data->started)
1291 goto out;
1292
1293 ieee80211_iterate_active_interfaces_atomic(
1294 hw, IEEE80211_IFACE_ITER_NORMAL,
1295 mac80211_hwsim_beacon_tx, data);
1296
1297 /* beacon at new TBTT + beacon interval */
1298 if (data->bcn_delta) {
1299 bcn_int -= data->bcn_delta;
1300 data->bcn_delta = 0;
1301 }
1302
1303 next_bcn = ktime_add(hrtimer_get_expires(timer),
1304 ns_to_ktime(bcn_int * 1000));
1305 tasklet_hrtimer_start(&data->beacon_timer, next_bcn, HRTIMER_MODE_ABS);
1306 out:
1307 return HRTIMER_NORESTART;
1308 }
1309
1310 static const char * const hwsim_chanwidths[] = {
1311 [NL80211_CHAN_WIDTH_20_NOHT] = "noht",
1312 [NL80211_CHAN_WIDTH_20] = "ht20",
1313 [NL80211_CHAN_WIDTH_40] = "ht40",
1314 [NL80211_CHAN_WIDTH_80] = "vht80",
1315 [NL80211_CHAN_WIDTH_80P80] = "vht80p80",
1316 [NL80211_CHAN_WIDTH_160] = "vht160",
1317 };
1318
1319 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
1320 {
1321 struct mac80211_hwsim_data *data = hw->priv;
1322 struct ieee80211_conf *conf = &hw->conf;
1323 static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
1324 [IEEE80211_SMPS_AUTOMATIC] = "auto",
1325 [IEEE80211_SMPS_OFF] = "off",
1326 [IEEE80211_SMPS_STATIC] = "static",
1327 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
1328 };
1329
1330 if (conf->chandef.chan)
1331 wiphy_debug(hw->wiphy,
1332 "%s (freq=%d(%d - %d)/%s idle=%d ps=%d smps=%s)\n",
1333 __func__,
1334 conf->chandef.chan->center_freq,
1335 conf->chandef.center_freq1,
1336 conf->chandef.center_freq2,
1337 hwsim_chanwidths[conf->chandef.width],
1338 !!(conf->flags & IEEE80211_CONF_IDLE),
1339 !!(conf->flags & IEEE80211_CONF_PS),
1340 smps_modes[conf->smps_mode]);
1341 else
1342 wiphy_debug(hw->wiphy,
1343 "%s (freq=0 idle=%d ps=%d smps=%s)\n",
1344 __func__,
1345 !!(conf->flags & IEEE80211_CONF_IDLE),
1346 !!(conf->flags & IEEE80211_CONF_PS),
1347 smps_modes[conf->smps_mode]);
1348
1349 data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
1350
1351 data->channel = conf->chandef.chan;
1352
1353 WARN_ON(data->channel && data->channels > 1);
1354
1355 data->power_level = conf->power_level;
1356 if (!data->started || !data->beacon_int)
1357 tasklet_hrtimer_cancel(&data->beacon_timer);
1358 else if (!hrtimer_is_queued(&data->beacon_timer.timer)) {
1359 u64 tsf = mac80211_hwsim_get_tsf(hw, NULL);
1360 u32 bcn_int = data->beacon_int;
1361 u64 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1362
1363 tasklet_hrtimer_start(&data->beacon_timer,
1364 ns_to_ktime(until_tbtt * 1000),
1365 HRTIMER_MODE_REL);
1366 }
1367
1368 return 0;
1369 }
1370
1371
1372 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
1373 unsigned int changed_flags,
1374 unsigned int *total_flags,u64 multicast)
1375 {
1376 struct mac80211_hwsim_data *data = hw->priv;
1377
1378 wiphy_debug(hw->wiphy, "%s\n", __func__);
1379
1380 data->rx_filter = 0;
1381 if (*total_flags & FIF_PROMISC_IN_BSS)
1382 data->rx_filter |= FIF_PROMISC_IN_BSS;
1383 if (*total_flags & FIF_ALLMULTI)
1384 data->rx_filter |= FIF_ALLMULTI;
1385
1386 *total_flags = data->rx_filter;
1387 }
1388
1389 static void mac80211_hwsim_bcn_en_iter(void *data, u8 *mac,
1390 struct ieee80211_vif *vif)
1391 {
1392 unsigned int *count = data;
1393 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1394
1395 if (vp->bcn_en)
1396 (*count)++;
1397 }
1398
1399 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
1400 struct ieee80211_vif *vif,
1401 struct ieee80211_bss_conf *info,
1402 u32 changed)
1403 {
1404 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1405 struct mac80211_hwsim_data *data = hw->priv;
1406
1407 hwsim_check_magic(vif);
1408
1409 wiphy_debug(hw->wiphy, "%s(changed=0x%x vif->addr=%pM)\n",
1410 __func__, changed, vif->addr);
1411
1412 if (changed & BSS_CHANGED_BSSID) {
1413 wiphy_debug(hw->wiphy, "%s: BSSID changed: %pM\n",
1414 __func__, info->bssid);
1415 memcpy(vp->bssid, info->bssid, ETH_ALEN);
1416 }
1417
1418 if (changed & BSS_CHANGED_ASSOC) {
1419 wiphy_debug(hw->wiphy, " ASSOC: assoc=%d aid=%d\n",
1420 info->assoc, info->aid);
1421 vp->assoc = info->assoc;
1422 vp->aid = info->aid;
1423 }
1424
1425 if (changed & BSS_CHANGED_BEACON_INT) {
1426 wiphy_debug(hw->wiphy, " BCNINT: %d\n", info->beacon_int);
1427 data->beacon_int = info->beacon_int * 1024;
1428 }
1429
1430 if (changed & BSS_CHANGED_BEACON_ENABLED) {
1431 wiphy_debug(hw->wiphy, " BCN EN: %d\n", info->enable_beacon);
1432 vp->bcn_en = info->enable_beacon;
1433 if (data->started &&
1434 !hrtimer_is_queued(&data->beacon_timer.timer) &&
1435 info->enable_beacon) {
1436 u64 tsf, until_tbtt;
1437 u32 bcn_int;
1438 if (WARN_ON(!data->beacon_int))
1439 data->beacon_int = 1000 * 1024;
1440 tsf = mac80211_hwsim_get_tsf(hw, vif);
1441 bcn_int = data->beacon_int;
1442 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1443 tasklet_hrtimer_start(&data->beacon_timer,
1444 ns_to_ktime(until_tbtt * 1000),
1445 HRTIMER_MODE_REL);
1446 } else if (!info->enable_beacon) {
1447 unsigned int count = 0;
1448 ieee80211_iterate_active_interfaces_atomic(
1449 data->hw, IEEE80211_IFACE_ITER_NORMAL,
1450 mac80211_hwsim_bcn_en_iter, &count);
1451 wiphy_debug(hw->wiphy, " beaconing vifs remaining: %u",
1452 count);
1453 if (count == 0)
1454 tasklet_hrtimer_cancel(&data->beacon_timer);
1455 }
1456 }
1457
1458 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1459 wiphy_debug(hw->wiphy, " ERP_CTS_PROT: %d\n",
1460 info->use_cts_prot);
1461 }
1462
1463 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1464 wiphy_debug(hw->wiphy, " ERP_PREAMBLE: %d\n",
1465 info->use_short_preamble);
1466 }
1467
1468 if (changed & BSS_CHANGED_ERP_SLOT) {
1469 wiphy_debug(hw->wiphy, " ERP_SLOT: %d\n", info->use_short_slot);
1470 }
1471
1472 if (changed & BSS_CHANGED_HT) {
1473 wiphy_debug(hw->wiphy, " HT: op_mode=0x%x\n",
1474 info->ht_operation_mode);
1475 }
1476
1477 if (changed & BSS_CHANGED_BASIC_RATES) {
1478 wiphy_debug(hw->wiphy, " BASIC_RATES: 0x%llx\n",
1479 (unsigned long long) info->basic_rates);
1480 }
1481
1482 if (changed & BSS_CHANGED_TXPOWER)
1483 wiphy_debug(hw->wiphy, " TX Power: %d dBm\n", info->txpower);
1484 }
1485
1486 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
1487 struct ieee80211_vif *vif,
1488 struct ieee80211_sta *sta)
1489 {
1490 hwsim_check_magic(vif);
1491 hwsim_set_sta_magic(sta);
1492
1493 return 0;
1494 }
1495
1496 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
1497 struct ieee80211_vif *vif,
1498 struct ieee80211_sta *sta)
1499 {
1500 hwsim_check_magic(vif);
1501 hwsim_clear_sta_magic(sta);
1502
1503 return 0;
1504 }
1505
1506 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
1507 struct ieee80211_vif *vif,
1508 enum sta_notify_cmd cmd,
1509 struct ieee80211_sta *sta)
1510 {
1511 hwsim_check_magic(vif);
1512
1513 switch (cmd) {
1514 case STA_NOTIFY_SLEEP:
1515 case STA_NOTIFY_AWAKE:
1516 /* TODO: make good use of these flags */
1517 break;
1518 default:
1519 WARN(1, "Invalid sta notify: %d\n", cmd);
1520 break;
1521 }
1522 }
1523
1524 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
1525 struct ieee80211_sta *sta,
1526 bool set)
1527 {
1528 hwsim_check_sta_magic(sta);
1529 return 0;
1530 }
1531
1532 static int mac80211_hwsim_conf_tx(
1533 struct ieee80211_hw *hw,
1534 struct ieee80211_vif *vif, u16 queue,
1535 const struct ieee80211_tx_queue_params *params)
1536 {
1537 wiphy_debug(hw->wiphy,
1538 "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
1539 __func__, queue,
1540 params->txop, params->cw_min,
1541 params->cw_max, params->aifs);
1542 return 0;
1543 }
1544
1545 static int mac80211_hwsim_get_survey(
1546 struct ieee80211_hw *hw, int idx,
1547 struct survey_info *survey)
1548 {
1549 struct ieee80211_conf *conf = &hw->conf;
1550
1551 wiphy_debug(hw->wiphy, "%s (idx=%d)\n", __func__, idx);
1552
1553 if (idx != 0)
1554 return -ENOENT;
1555
1556 /* Current channel */
1557 survey->channel = conf->chandef.chan;
1558
1559 /*
1560 * Magically conjured noise level --- this is only ok for simulated hardware.
1561 *
1562 * A real driver which cannot determine the real channel noise MUST NOT
1563 * report any noise, especially not a magically conjured one :-)
1564 */
1565 survey->filled = SURVEY_INFO_NOISE_DBM;
1566 survey->noise = -92;
1567
1568 return 0;
1569 }
1570
1571 #ifdef CONFIG_NL80211_TESTMODE
1572 /*
1573 * This section contains example code for using netlink
1574 * attributes with the testmode command in nl80211.
1575 */
1576
1577 /* These enums need to be kept in sync with userspace */
1578 enum hwsim_testmode_attr {
1579 __HWSIM_TM_ATTR_INVALID = 0,
1580 HWSIM_TM_ATTR_CMD = 1,
1581 HWSIM_TM_ATTR_PS = 2,
1582
1583 /* keep last */
1584 __HWSIM_TM_ATTR_AFTER_LAST,
1585 HWSIM_TM_ATTR_MAX = __HWSIM_TM_ATTR_AFTER_LAST - 1
1586 };
1587
1588 enum hwsim_testmode_cmd {
1589 HWSIM_TM_CMD_SET_PS = 0,
1590 HWSIM_TM_CMD_GET_PS = 1,
1591 HWSIM_TM_CMD_STOP_QUEUES = 2,
1592 HWSIM_TM_CMD_WAKE_QUEUES = 3,
1593 };
1594
1595 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
1596 [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
1597 [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
1598 };
1599
1600 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
1601 struct ieee80211_vif *vif,
1602 void *data, int len)
1603 {
1604 struct mac80211_hwsim_data *hwsim = hw->priv;
1605 struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
1606 struct sk_buff *skb;
1607 int err, ps;
1608
1609 err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
1610 hwsim_testmode_policy);
1611 if (err)
1612 return err;
1613
1614 if (!tb[HWSIM_TM_ATTR_CMD])
1615 return -EINVAL;
1616
1617 switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
1618 case HWSIM_TM_CMD_SET_PS:
1619 if (!tb[HWSIM_TM_ATTR_PS])
1620 return -EINVAL;
1621 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
1622 return hwsim_fops_ps_write(hwsim, ps);
1623 case HWSIM_TM_CMD_GET_PS:
1624 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
1625 nla_total_size(sizeof(u32)));
1626 if (!skb)
1627 return -ENOMEM;
1628 if (nla_put_u32(skb, HWSIM_TM_ATTR_PS, hwsim->ps))
1629 goto nla_put_failure;
1630 return cfg80211_testmode_reply(skb);
1631 case HWSIM_TM_CMD_STOP_QUEUES:
1632 ieee80211_stop_queues(hw);
1633 return 0;
1634 case HWSIM_TM_CMD_WAKE_QUEUES:
1635 ieee80211_wake_queues(hw);
1636 return 0;
1637 default:
1638 return -EOPNOTSUPP;
1639 }
1640
1641 nla_put_failure:
1642 kfree_skb(skb);
1643 return -ENOBUFS;
1644 }
1645 #endif
1646
1647 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
1648 struct ieee80211_vif *vif,
1649 enum ieee80211_ampdu_mlme_action action,
1650 struct ieee80211_sta *sta, u16 tid, u16 *ssn,
1651 u8 buf_size)
1652 {
1653 switch (action) {
1654 case IEEE80211_AMPDU_TX_START:
1655 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1656 break;
1657 case IEEE80211_AMPDU_TX_STOP_CONT:
1658 case IEEE80211_AMPDU_TX_STOP_FLUSH:
1659 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
1660 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1661 break;
1662 case IEEE80211_AMPDU_TX_OPERATIONAL:
1663 break;
1664 case IEEE80211_AMPDU_RX_START:
1665 case IEEE80211_AMPDU_RX_STOP:
1666 break;
1667 default:
1668 return -EOPNOTSUPP;
1669 }
1670
1671 return 0;
1672 }
1673
1674 static void mac80211_hwsim_flush(struct ieee80211_hw *hw, u32 queues, bool drop)
1675 {
1676 /* Not implemented, queues only on kernel side */
1677 }
1678
1679 static void hw_scan_work(struct work_struct *work)
1680 {
1681 struct mac80211_hwsim_data *hwsim =
1682 container_of(work, struct mac80211_hwsim_data, hw_scan.work);
1683 struct cfg80211_scan_request *req = hwsim->hw_scan_request;
1684 int dwell, i;
1685
1686 mutex_lock(&hwsim->mutex);
1687 if (hwsim->scan_chan_idx >= req->n_channels) {
1688 wiphy_debug(hwsim->hw->wiphy, "hw scan complete\n");
1689 ieee80211_scan_completed(hwsim->hw, false);
1690 hwsim->hw_scan_request = NULL;
1691 hwsim->hw_scan_vif = NULL;
1692 hwsim->tmp_chan = NULL;
1693 mutex_unlock(&hwsim->mutex);
1694 return;
1695 }
1696
1697 wiphy_debug(hwsim->hw->wiphy, "hw scan %d MHz\n",
1698 req->channels[hwsim->scan_chan_idx]->center_freq);
1699
1700 hwsim->tmp_chan = req->channels[hwsim->scan_chan_idx];
1701 if (hwsim->tmp_chan->flags & IEEE80211_CHAN_NO_IR ||
1702 !req->n_ssids) {
1703 dwell = 120;
1704 } else {
1705 dwell = 30;
1706 /* send probes */
1707 for (i = 0; i < req->n_ssids; i++) {
1708 struct sk_buff *probe;
1709
1710 probe = ieee80211_probereq_get(hwsim->hw,
1711 hwsim->hw_scan_vif,
1712 req->ssids[i].ssid,
1713 req->ssids[i].ssid_len,
1714 req->ie_len);
1715 if (!probe)
1716 continue;
1717
1718 if (req->ie_len)
1719 memcpy(skb_put(probe, req->ie_len), req->ie,
1720 req->ie_len);
1721
1722 local_bh_disable();
1723 mac80211_hwsim_tx_frame(hwsim->hw, probe,
1724 hwsim->tmp_chan);
1725 local_bh_enable();
1726 }
1727 }
1728 ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan,
1729 msecs_to_jiffies(dwell));
1730 hwsim->scan_chan_idx++;
1731 mutex_unlock(&hwsim->mutex);
1732 }
1733
1734 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
1735 struct ieee80211_vif *vif,
1736 struct cfg80211_scan_request *req)
1737 {
1738 struct mac80211_hwsim_data *hwsim = hw->priv;
1739
1740 mutex_lock(&hwsim->mutex);
1741 if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
1742 mutex_unlock(&hwsim->mutex);
1743 return -EBUSY;
1744 }
1745 hwsim->hw_scan_request = req;
1746 hwsim->hw_scan_vif = vif;
1747 hwsim->scan_chan_idx = 0;
1748 mutex_unlock(&hwsim->mutex);
1749
1750 wiphy_debug(hw->wiphy, "hwsim hw_scan request\n");
1751
1752 ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan, 0);
1753
1754 return 0;
1755 }
1756
1757 static void mac80211_hwsim_cancel_hw_scan(struct ieee80211_hw *hw,
1758 struct ieee80211_vif *vif)
1759 {
1760 struct mac80211_hwsim_data *hwsim = hw->priv;
1761
1762 wiphy_debug(hw->wiphy, "hwsim cancel_hw_scan\n");
1763
1764 cancel_delayed_work_sync(&hwsim->hw_scan);
1765
1766 mutex_lock(&hwsim->mutex);
1767 ieee80211_scan_completed(hwsim->hw, true);
1768 hwsim->tmp_chan = NULL;
1769 hwsim->hw_scan_request = NULL;
1770 hwsim->hw_scan_vif = NULL;
1771 mutex_unlock(&hwsim->mutex);
1772 }
1773
1774 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw)
1775 {
1776 struct mac80211_hwsim_data *hwsim = hw->priv;
1777
1778 mutex_lock(&hwsim->mutex);
1779
1780 if (hwsim->scanning) {
1781 printk(KERN_DEBUG "two hwsim sw_scans detected!\n");
1782 goto out;
1783 }
1784
1785 printk(KERN_DEBUG "hwsim sw_scan request, prepping stuff\n");
1786 hwsim->scanning = true;
1787
1788 out:
1789 mutex_unlock(&hwsim->mutex);
1790 }
1791
1792 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw)
1793 {
1794 struct mac80211_hwsim_data *hwsim = hw->priv;
1795
1796 mutex_lock(&hwsim->mutex);
1797
1798 printk(KERN_DEBUG "hwsim sw_scan_complete\n");
1799 hwsim->scanning = false;
1800
1801 mutex_unlock(&hwsim->mutex);
1802 }
1803
1804 static void hw_roc_done(struct work_struct *work)
1805 {
1806 struct mac80211_hwsim_data *hwsim =
1807 container_of(work, struct mac80211_hwsim_data, roc_done.work);
1808
1809 mutex_lock(&hwsim->mutex);
1810 ieee80211_remain_on_channel_expired(hwsim->hw);
1811 hwsim->tmp_chan = NULL;
1812 mutex_unlock(&hwsim->mutex);
1813
1814 wiphy_debug(hwsim->hw->wiphy, "hwsim ROC expired\n");
1815 }
1816
1817 static int mac80211_hwsim_roc(struct ieee80211_hw *hw,
1818 struct ieee80211_vif *vif,
1819 struct ieee80211_channel *chan,
1820 int duration,
1821 enum ieee80211_roc_type type)
1822 {
1823 struct mac80211_hwsim_data *hwsim = hw->priv;
1824
1825 mutex_lock(&hwsim->mutex);
1826 if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
1827 mutex_unlock(&hwsim->mutex);
1828 return -EBUSY;
1829 }
1830
1831 hwsim->tmp_chan = chan;
1832 mutex_unlock(&hwsim->mutex);
1833
1834 wiphy_debug(hw->wiphy, "hwsim ROC (%d MHz, %d ms)\n",
1835 chan->center_freq, duration);
1836
1837 ieee80211_ready_on_channel(hw);
1838
1839 ieee80211_queue_delayed_work(hw, &hwsim->roc_done,
1840 msecs_to_jiffies(duration));
1841 return 0;
1842 }
1843
1844 static int mac80211_hwsim_croc(struct ieee80211_hw *hw)
1845 {
1846 struct mac80211_hwsim_data *hwsim = hw->priv;
1847
1848 cancel_delayed_work_sync(&hwsim->roc_done);
1849
1850 mutex_lock(&hwsim->mutex);
1851 hwsim->tmp_chan = NULL;
1852 mutex_unlock(&hwsim->mutex);
1853
1854 wiphy_debug(hw->wiphy, "hwsim ROC canceled\n");
1855
1856 return 0;
1857 }
1858
1859 static int mac80211_hwsim_add_chanctx(struct ieee80211_hw *hw,
1860 struct ieee80211_chanctx_conf *ctx)
1861 {
1862 hwsim_set_chanctx_magic(ctx);
1863 wiphy_debug(hw->wiphy,
1864 "add channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
1865 ctx->def.chan->center_freq, ctx->def.width,
1866 ctx->def.center_freq1, ctx->def.center_freq2);
1867 return 0;
1868 }
1869
1870 static void mac80211_hwsim_remove_chanctx(struct ieee80211_hw *hw,
1871 struct ieee80211_chanctx_conf *ctx)
1872 {
1873 wiphy_debug(hw->wiphy,
1874 "remove channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
1875 ctx->def.chan->center_freq, ctx->def.width,
1876 ctx->def.center_freq1, ctx->def.center_freq2);
1877 hwsim_check_chanctx_magic(ctx);
1878 hwsim_clear_chanctx_magic(ctx);
1879 }
1880
1881 static void mac80211_hwsim_change_chanctx(struct ieee80211_hw *hw,
1882 struct ieee80211_chanctx_conf *ctx,
1883 u32 changed)
1884 {
1885 hwsim_check_chanctx_magic(ctx);
1886 wiphy_debug(hw->wiphy,
1887 "change channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
1888 ctx->def.chan->center_freq, ctx->def.width,
1889 ctx->def.center_freq1, ctx->def.center_freq2);
1890 }
1891
1892 static int mac80211_hwsim_assign_vif_chanctx(struct ieee80211_hw *hw,
1893 struct ieee80211_vif *vif,
1894 struct ieee80211_chanctx_conf *ctx)
1895 {
1896 hwsim_check_magic(vif);
1897 hwsim_check_chanctx_magic(ctx);
1898
1899 return 0;
1900 }
1901
1902 static void mac80211_hwsim_unassign_vif_chanctx(struct ieee80211_hw *hw,
1903 struct ieee80211_vif *vif,
1904 struct ieee80211_chanctx_conf *ctx)
1905 {
1906 hwsim_check_magic(vif);
1907 hwsim_check_chanctx_magic(ctx);
1908 }
1909
1910 static const struct ieee80211_ops mac80211_hwsim_ops = {
1911 .tx = mac80211_hwsim_tx,
1912 .start = mac80211_hwsim_start,
1913 .stop = mac80211_hwsim_stop,
1914 .add_interface = mac80211_hwsim_add_interface,
1915 .change_interface = mac80211_hwsim_change_interface,
1916 .remove_interface = mac80211_hwsim_remove_interface,
1917 .config = mac80211_hwsim_config,
1918 .configure_filter = mac80211_hwsim_configure_filter,
1919 .bss_info_changed = mac80211_hwsim_bss_info_changed,
1920 .sta_add = mac80211_hwsim_sta_add,
1921 .sta_remove = mac80211_hwsim_sta_remove,
1922 .sta_notify = mac80211_hwsim_sta_notify,
1923 .set_tim = mac80211_hwsim_set_tim,
1924 .conf_tx = mac80211_hwsim_conf_tx,
1925 .get_survey = mac80211_hwsim_get_survey,
1926 CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)
1927 .ampdu_action = mac80211_hwsim_ampdu_action,
1928 .sw_scan_start = mac80211_hwsim_sw_scan,
1929 .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
1930 .flush = mac80211_hwsim_flush,
1931 .get_tsf = mac80211_hwsim_get_tsf,
1932 .set_tsf = mac80211_hwsim_set_tsf,
1933 };
1934
1935 static struct ieee80211_ops mac80211_hwsim_mchan_ops;
1936
1937 static int mac80211_hwsim_create_radio(int channels, const char *reg_alpha2,
1938 const struct ieee80211_regdomain *regd,
1939 bool reg_strict)
1940 {
1941 int err;
1942 u8 addr[ETH_ALEN];
1943 struct mac80211_hwsim_data *data;
1944 struct ieee80211_hw *hw;
1945 enum ieee80211_band band;
1946 const struct ieee80211_ops *ops = &mac80211_hwsim_ops;
1947 int idx;
1948
1949 spin_lock_bh(&hwsim_radio_lock);
1950 idx = hwsim_radio_idx++;
1951 spin_unlock_bh(&hwsim_radio_lock);
1952
1953 if (channels > 1)
1954 ops = &mac80211_hwsim_mchan_ops;
1955 hw = ieee80211_alloc_hw(sizeof(*data), ops);
1956 if (!hw) {
1957 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw failed\n");
1958 err = -ENOMEM;
1959 goto failed;
1960 }
1961 data = hw->priv;
1962 data->hw = hw;
1963
1964 data->dev = device_create(hwsim_class, NULL, 0, hw, "hwsim%d", idx);
1965 if (IS_ERR(data->dev)) {
1966 printk(KERN_DEBUG
1967 "mac80211_hwsim: device_create failed (%ld)\n",
1968 PTR_ERR(data->dev));
1969 err = -ENOMEM;
1970 goto failed_drvdata;
1971 }
1972 data->dev->driver = &mac80211_hwsim_driver.driver;
1973 err = device_bind_driver(data->dev);
1974 if (err != 0) {
1975 printk(KERN_DEBUG "mac80211_hwsim: device_bind_driver failed (%d)\n",
1976 err);
1977 goto failed_hw;
1978 }
1979
1980 skb_queue_head_init(&data->pending);
1981
1982 SET_IEEE80211_DEV(hw, data->dev);
1983 memset(addr, 0, ETH_ALEN);
1984 addr[0] = 0x02;
1985 addr[3] = idx >> 8;
1986 addr[4] = idx;
1987 memcpy(data->addresses[0].addr, addr, ETH_ALEN);
1988 memcpy(data->addresses[1].addr, addr, ETH_ALEN);
1989 data->addresses[1].addr[0] |= 0x40;
1990 hw->wiphy->n_addresses = 2;
1991 hw->wiphy->addresses = data->addresses;
1992
1993 data->channels = channels;
1994 data->idx = idx;
1995
1996 if (data->channels > 1) {
1997 hw->wiphy->max_scan_ssids = 255;
1998 hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
1999 hw->wiphy->max_remain_on_channel_duration = 1000;
2000 /* For channels > 1 DFS is not allowed */
2001 hw->wiphy->n_iface_combinations = 1;
2002 hw->wiphy->iface_combinations = &data->if_combination;
2003 data->if_combination = hwsim_if_comb[0];
2004 data->if_combination.num_different_channels = data->channels;
2005 } else {
2006 hw->wiphy->iface_combinations = hwsim_if_comb;
2007 hw->wiphy->n_iface_combinations = ARRAY_SIZE(hwsim_if_comb);
2008 }
2009
2010 INIT_DELAYED_WORK(&data->roc_done, hw_roc_done);
2011 INIT_DELAYED_WORK(&data->hw_scan, hw_scan_work);
2012
2013 hw->queues = 5;
2014 hw->offchannel_tx_hw_queue = 4;
2015 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
2016 BIT(NL80211_IFTYPE_AP) |
2017 BIT(NL80211_IFTYPE_P2P_CLIENT) |
2018 BIT(NL80211_IFTYPE_P2P_GO) |
2019 BIT(NL80211_IFTYPE_ADHOC) |
2020 BIT(NL80211_IFTYPE_MESH_POINT) |
2021 BIT(NL80211_IFTYPE_P2P_DEVICE);
2022
2023 hw->flags = IEEE80211_HW_MFP_CAPABLE |
2024 IEEE80211_HW_SIGNAL_DBM |
2025 IEEE80211_HW_SUPPORTS_STATIC_SMPS |
2026 IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
2027 IEEE80211_HW_AMPDU_AGGREGATION |
2028 IEEE80211_HW_WANT_MONITOR_VIF |
2029 IEEE80211_HW_QUEUE_CONTROL |
2030 IEEE80211_HW_SUPPORTS_HT_CCK_RATES;
2031 if (rctbl)
2032 hw->flags |= IEEE80211_HW_SUPPORTS_RC_TABLE;
2033
2034 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS |
2035 WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL |
2036 WIPHY_FLAG_AP_UAPSD;
2037 hw->wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR;
2038
2039 /* ask mac80211 to reserve space for magic */
2040 hw->vif_data_size = sizeof(struct hwsim_vif_priv);
2041 hw->sta_data_size = sizeof(struct hwsim_sta_priv);
2042 hw->chanctx_data_size = sizeof(struct hwsim_chanctx_priv);
2043
2044 memcpy(data->channels_2ghz, hwsim_channels_2ghz,
2045 sizeof(hwsim_channels_2ghz));
2046 memcpy(data->channels_5ghz, hwsim_channels_5ghz,
2047 sizeof(hwsim_channels_5ghz));
2048 memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
2049
2050 for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) {
2051 struct ieee80211_supported_band *sband = &data->bands[band];
2052 switch (band) {
2053 case IEEE80211_BAND_2GHZ:
2054 sband->channels = data->channels_2ghz;
2055 sband->n_channels = ARRAY_SIZE(hwsim_channels_2ghz);
2056 sband->bitrates = data->rates;
2057 sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
2058 break;
2059 case IEEE80211_BAND_5GHZ:
2060 sband->channels = data->channels_5ghz;
2061 sband->n_channels = ARRAY_SIZE(hwsim_channels_5ghz);
2062 sband->bitrates = data->rates + 4;
2063 sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
2064 break;
2065 default:
2066 continue;
2067 }
2068
2069 sband->ht_cap.ht_supported = true;
2070 sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
2071 IEEE80211_HT_CAP_GRN_FLD |
2072 IEEE80211_HT_CAP_SGI_40 |
2073 IEEE80211_HT_CAP_DSSSCCK40;
2074 sband->ht_cap.ampdu_factor = 0x3;
2075 sband->ht_cap.ampdu_density = 0x6;
2076 memset(&sband->ht_cap.mcs, 0,
2077 sizeof(sband->ht_cap.mcs));
2078 sband->ht_cap.mcs.rx_mask[0] = 0xff;
2079 sband->ht_cap.mcs.rx_mask[1] = 0xff;
2080 sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2081
2082 hw->wiphy->bands[band] = sband;
2083
2084 sband->vht_cap.vht_supported = true;
2085 sband->vht_cap.cap =
2086 IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 |
2087 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ |
2088 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ |
2089 IEEE80211_VHT_CAP_RXLDPC |
2090 IEEE80211_VHT_CAP_SHORT_GI_80 |
2091 IEEE80211_VHT_CAP_SHORT_GI_160 |
2092 IEEE80211_VHT_CAP_TXSTBC |
2093 IEEE80211_VHT_CAP_RXSTBC_1 |
2094 IEEE80211_VHT_CAP_RXSTBC_2 |
2095 IEEE80211_VHT_CAP_RXSTBC_3 |
2096 IEEE80211_VHT_CAP_RXSTBC_4 |
2097 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
2098 sband->vht_cap.vht_mcs.rx_mcs_map =
2099 cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_8 << 0 |
2100 IEEE80211_VHT_MCS_SUPPORT_0_8 << 2 |
2101 IEEE80211_VHT_MCS_SUPPORT_0_9 << 4 |
2102 IEEE80211_VHT_MCS_SUPPORT_0_8 << 6 |
2103 IEEE80211_VHT_MCS_SUPPORT_0_8 << 8 |
2104 IEEE80211_VHT_MCS_SUPPORT_0_9 << 10 |
2105 IEEE80211_VHT_MCS_SUPPORT_0_9 << 12 |
2106 IEEE80211_VHT_MCS_SUPPORT_0_8 << 14);
2107 sband->vht_cap.vht_mcs.tx_mcs_map =
2108 sband->vht_cap.vht_mcs.rx_mcs_map;
2109 }
2110
2111 /* By default all radios belong to the first group */
2112 data->group = 1;
2113 mutex_init(&data->mutex);
2114
2115 /* Enable frame retransmissions for lossy channels */
2116 hw->max_rates = 4;
2117 hw->max_rate_tries = 11;
2118
2119 if (reg_strict)
2120 hw->wiphy->regulatory_flags |= REGULATORY_STRICT_REG;
2121 if (regd) {
2122 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG;
2123 wiphy_apply_custom_regulatory(hw->wiphy, regd);
2124 /* give the regulatory workqueue a chance to run */
2125 schedule_timeout_interruptible(1);
2126 }
2127
2128 err = ieee80211_register_hw(hw);
2129 if (err < 0) {
2130 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_register_hw failed (%d)\n",
2131 err);
2132 goto failed_hw;
2133 }
2134
2135 wiphy_debug(hw->wiphy, "hwaddr %pM registered\n", hw->wiphy->perm_addr);
2136
2137 if (reg_alpha2)
2138 regulatory_hint(hw->wiphy, reg_alpha2);
2139
2140 data->debugfs = debugfs_create_dir("hwsim", hw->wiphy->debugfsdir);
2141 debugfs_create_file("ps", 0666, data->debugfs, data, &hwsim_fops_ps);
2142 debugfs_create_file("group", 0666, data->debugfs, data,
2143 &hwsim_fops_group);
2144 if (data->channels == 1)
2145 debugfs_create_file("dfs_simulate_radar", 0222,
2146 data->debugfs,
2147 data, &hwsim_simulate_radar);
2148
2149 tasklet_hrtimer_init(&data->beacon_timer,
2150 mac80211_hwsim_beacon,
2151 CLOCK_MONOTONIC_RAW, HRTIMER_MODE_ABS);
2152
2153 spin_lock_bh(&hwsim_radio_lock);
2154 list_add_tail(&data->list, &hwsim_radios);
2155 spin_unlock_bh(&hwsim_radio_lock);
2156
2157 return idx;
2158
2159 failed_hw:
2160 device_unregister(data->dev);
2161 failed_drvdata:
2162 ieee80211_free_hw(hw);
2163 failed:
2164 return err;
2165 }
2166
2167 static void mac80211_hwsim_destroy_radio(struct mac80211_hwsim_data *data)
2168 {
2169 debugfs_remove_recursive(data->debugfs);
2170 ieee80211_unregister_hw(data->hw);
2171 device_release_driver(data->dev);
2172 device_unregister(data->dev);
2173 ieee80211_free_hw(data->hw);
2174 }
2175
2176 static void mac80211_hwsim_free(void)
2177 {
2178 struct mac80211_hwsim_data *data;
2179
2180 spin_lock_bh(&hwsim_radio_lock);
2181 while ((data = list_first_entry_or_null(&hwsim_radios,
2182 struct mac80211_hwsim_data,
2183 list))) {
2184 list_del(&data->list);
2185 spin_unlock_bh(&hwsim_radio_lock);
2186 mac80211_hwsim_destroy_radio(data);
2187 spin_lock_bh(&hwsim_radio_lock);
2188 }
2189 spin_unlock_bh(&hwsim_radio_lock);
2190 class_destroy(hwsim_class);
2191 }
2192
2193 static const struct net_device_ops hwsim_netdev_ops = {
2194 .ndo_start_xmit = hwsim_mon_xmit,
2195 .ndo_change_mtu = eth_change_mtu,
2196 .ndo_set_mac_address = eth_mac_addr,
2197 .ndo_validate_addr = eth_validate_addr,
2198 };
2199
2200 static void hwsim_mon_setup(struct net_device *dev)
2201 {
2202 dev->netdev_ops = &hwsim_netdev_ops;
2203 dev->destructor = free_netdev;
2204 ether_setup(dev);
2205 dev->tx_queue_len = 0;
2206 dev->type = ARPHRD_IEEE80211_RADIOTAP;
2207 memset(dev->dev_addr, 0, ETH_ALEN);
2208 dev->dev_addr[0] = 0x12;
2209 }
2210
2211 static struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(const u8 *addr)
2212 {
2213 struct mac80211_hwsim_data *data;
2214 bool _found = false;
2215
2216 spin_lock_bh(&hwsim_radio_lock);
2217 list_for_each_entry(data, &hwsim_radios, list) {
2218 if (memcmp(data->addresses[1].addr, addr, ETH_ALEN) == 0) {
2219 _found = true;
2220 break;
2221 }
2222 }
2223 spin_unlock_bh(&hwsim_radio_lock);
2224
2225 if (!_found)
2226 return NULL;
2227
2228 return data;
2229 }
2230
2231 static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
2232 struct genl_info *info)
2233 {
2234
2235 struct ieee80211_hdr *hdr;
2236 struct mac80211_hwsim_data *data2;
2237 struct ieee80211_tx_info *txi;
2238 struct hwsim_tx_rate *tx_attempts;
2239 unsigned long ret_skb_ptr;
2240 struct sk_buff *skb, *tmp;
2241 const u8 *src;
2242 unsigned int hwsim_flags;
2243 int i;
2244 bool found = false;
2245
2246 if (info->snd_portid != wmediumd_portid)
2247 return -EINVAL;
2248
2249 if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
2250 !info->attrs[HWSIM_ATTR_FLAGS] ||
2251 !info->attrs[HWSIM_ATTR_COOKIE] ||
2252 !info->attrs[HWSIM_ATTR_TX_INFO])
2253 goto out;
2254
2255 src = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
2256 hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
2257 ret_skb_ptr = nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
2258
2259 data2 = get_hwsim_data_ref_from_addr(src);
2260 if (!data2)
2261 goto out;
2262
2263 /* look for the skb matching the cookie passed back from user */
2264 skb_queue_walk_safe(&data2->pending, skb, tmp) {
2265 if ((unsigned long)skb == ret_skb_ptr) {
2266 skb_unlink(skb, &data2->pending);
2267 found = true;
2268 break;
2269 }
2270 }
2271
2272 /* not found */
2273 if (!found)
2274 goto out;
2275
2276 /* Tx info received because the frame was broadcasted on user space,
2277 so we get all the necessary info: tx attempts and skb control buff */
2278
2279 tx_attempts = (struct hwsim_tx_rate *)nla_data(
2280 info->attrs[HWSIM_ATTR_TX_INFO]);
2281
2282 /* now send back TX status */
2283 txi = IEEE80211_SKB_CB(skb);
2284
2285 ieee80211_tx_info_clear_status(txi);
2286
2287 for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
2288 txi->status.rates[i].idx = tx_attempts[i].idx;
2289 txi->status.rates[i].count = tx_attempts[i].count;
2290 /*txi->status.rates[i].flags = 0;*/
2291 }
2292
2293 txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
2294
2295 if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
2296 (hwsim_flags & HWSIM_TX_STAT_ACK)) {
2297 if (skb->len >= 16) {
2298 hdr = (struct ieee80211_hdr *) skb->data;
2299 mac80211_hwsim_monitor_ack(data2->channel,
2300 hdr->addr2);
2301 }
2302 txi->flags |= IEEE80211_TX_STAT_ACK;
2303 }
2304 ieee80211_tx_status_irqsafe(data2->hw, skb);
2305 return 0;
2306 out:
2307 return -EINVAL;
2308
2309 }
2310
2311 static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
2312 struct genl_info *info)
2313 {
2314
2315 struct mac80211_hwsim_data *data2;
2316 struct ieee80211_rx_status rx_status;
2317 const u8 *dst;
2318 int frame_data_len;
2319 void *frame_data;
2320 struct sk_buff *skb = NULL;
2321
2322 if (info->snd_portid != wmediumd_portid)
2323 return -EINVAL;
2324
2325 if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
2326 !info->attrs[HWSIM_ATTR_FRAME] ||
2327 !info->attrs[HWSIM_ATTR_RX_RATE] ||
2328 !info->attrs[HWSIM_ATTR_SIGNAL])
2329 goto out;
2330
2331 dst = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
2332 frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
2333 frame_data = (void *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
2334
2335 /* Allocate new skb here */
2336 skb = alloc_skb(frame_data_len, GFP_KERNEL);
2337 if (skb == NULL)
2338 goto err;
2339
2340 if (frame_data_len > IEEE80211_MAX_DATA_LEN)
2341 goto err;
2342
2343 /* Copy the data */
2344 memcpy(skb_put(skb, frame_data_len), frame_data, frame_data_len);
2345
2346 data2 = get_hwsim_data_ref_from_addr(dst);
2347 if (!data2)
2348 goto out;
2349
2350 /* check if radio is configured properly */
2351
2352 if (data2->idle || !data2->started)
2353 goto out;
2354
2355 /* A frame is received from user space */
2356 memset(&rx_status, 0, sizeof(rx_status));
2357 rx_status.freq = data2->channel->center_freq;
2358 rx_status.band = data2->channel->band;
2359 rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
2360 rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
2361
2362 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
2363 ieee80211_rx_irqsafe(data2->hw, skb);
2364
2365 return 0;
2366 err:
2367 printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
2368 goto out;
2369 out:
2370 dev_kfree_skb(skb);
2371 return -EINVAL;
2372 }
2373
2374 static int hwsim_register_received_nl(struct sk_buff *skb_2,
2375 struct genl_info *info)
2376 {
2377 struct mac80211_hwsim_data *data;
2378 int chans = 1;
2379
2380 spin_lock_bh(&hwsim_radio_lock);
2381 list_for_each_entry(data, &hwsim_radios, list)
2382 chans = max(chans, data->channels);
2383 spin_unlock_bh(&hwsim_radio_lock);
2384
2385 /* In the future we should revise the userspace API and allow it
2386 * to set a flag that it does support multi-channel, then we can
2387 * let this pass conditionally on the flag.
2388 * For current userspace, prohibit it since it won't work right.
2389 */
2390 if (chans > 1)
2391 return -EOPNOTSUPP;
2392
2393 if (wmediumd_portid)
2394 return -EBUSY;
2395
2396 wmediumd_portid = info->snd_portid;
2397
2398 printk(KERN_DEBUG "mac80211_hwsim: received a REGISTER, "
2399 "switching to wmediumd mode with pid %d\n", info->snd_portid);
2400
2401 return 0;
2402 }
2403
2404 static int hwsim_create_radio_nl(struct sk_buff *msg, struct genl_info *info)
2405 {
2406 unsigned int chans = channels;
2407 const char *alpha2 = NULL;
2408 const struct ieee80211_regdomain *regd = NULL;
2409 bool reg_strict = info->attrs[HWSIM_ATTR_REG_STRICT_REG];
2410
2411 if (info->attrs[HWSIM_ATTR_CHANNELS])
2412 chans = nla_get_u32(info->attrs[HWSIM_ATTR_CHANNELS]);
2413
2414 if (info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2])
2415 alpha2 = nla_data(info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2]);
2416
2417 if (info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]) {
2418 u32 idx = nla_get_u32(info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]);
2419
2420 if (idx >= ARRAY_SIZE(hwsim_world_regdom_custom))
2421 return -EINVAL;
2422 regd = hwsim_world_regdom_custom[idx];
2423 }
2424
2425 return mac80211_hwsim_create_radio(chans, alpha2, regd, reg_strict);
2426 }
2427
2428 static int hwsim_destroy_radio_nl(struct sk_buff *msg, struct genl_info *info)
2429 {
2430 struct mac80211_hwsim_data *data;
2431 int idx;
2432
2433 if (!info->attrs[HWSIM_ATTR_RADIO_ID])
2434 return -EINVAL;
2435 idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
2436
2437 spin_lock_bh(&hwsim_radio_lock);
2438 list_for_each_entry(data, &hwsim_radios, list) {
2439 if (data->idx != idx)
2440 continue;
2441 list_del(&data->list);
2442 spin_unlock_bh(&hwsim_radio_lock);
2443 mac80211_hwsim_destroy_radio(data);
2444 return 0;
2445 }
2446 spin_unlock_bh(&hwsim_radio_lock);
2447
2448 return -ENODEV;
2449 }
2450
2451 /* Generic Netlink operations array */
2452 static const struct genl_ops hwsim_ops[] = {
2453 {
2454 .cmd = HWSIM_CMD_REGISTER,
2455 .policy = hwsim_genl_policy,
2456 .doit = hwsim_register_received_nl,
2457 .flags = GENL_ADMIN_PERM,
2458 },
2459 {
2460 .cmd = HWSIM_CMD_FRAME,
2461 .policy = hwsim_genl_policy,
2462 .doit = hwsim_cloned_frame_received_nl,
2463 },
2464 {
2465 .cmd = HWSIM_CMD_TX_INFO_FRAME,
2466 .policy = hwsim_genl_policy,
2467 .doit = hwsim_tx_info_frame_received_nl,
2468 },
2469 {
2470 .cmd = HWSIM_CMD_CREATE_RADIO,
2471 .policy = hwsim_genl_policy,
2472 .doit = hwsim_create_radio_nl,
2473 .flags = GENL_ADMIN_PERM,
2474 },
2475 {
2476 .cmd = HWSIM_CMD_DESTROY_RADIO,
2477 .policy = hwsim_genl_policy,
2478 .doit = hwsim_destroy_radio_nl,
2479 .flags = GENL_ADMIN_PERM,
2480 },
2481 };
2482
2483 static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
2484 unsigned long state,
2485 void *_notify)
2486 {
2487 struct netlink_notify *notify = _notify;
2488
2489 if (state != NETLINK_URELEASE)
2490 return NOTIFY_DONE;
2491
2492 if (notify->portid == wmediumd_portid) {
2493 printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
2494 " socket, switching to perfect channel medium\n");
2495 wmediumd_portid = 0;
2496 }
2497 return NOTIFY_DONE;
2498
2499 }
2500
2501 static struct notifier_block hwsim_netlink_notifier = {
2502 .notifier_call = mac80211_hwsim_netlink_notify,
2503 };
2504
2505 static int hwsim_init_netlink(void)
2506 {
2507 int rc;
2508
2509 printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
2510
2511 rc = genl_register_family_with_ops(&hwsim_genl_family, hwsim_ops);
2512 if (rc)
2513 goto failure;
2514
2515 rc = netlink_register_notifier(&hwsim_netlink_notifier);
2516 if (rc)
2517 goto failure;
2518
2519 return 0;
2520
2521 failure:
2522 printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
2523 return -EINVAL;
2524 }
2525
2526 static void hwsim_exit_netlink(void)
2527 {
2528 /* unregister the notifier */
2529 netlink_unregister_notifier(&hwsim_netlink_notifier);
2530 /* unregister the family */
2531 genl_unregister_family(&hwsim_genl_family);
2532 }
2533
2534 static int __init init_mac80211_hwsim(void)
2535 {
2536 int i, err;
2537
2538 if (radios < 0 || radios > 100)
2539 return -EINVAL;
2540
2541 if (channels < 1)
2542 return -EINVAL;
2543
2544 mac80211_hwsim_mchan_ops = mac80211_hwsim_ops;
2545 mac80211_hwsim_mchan_ops.hw_scan = mac80211_hwsim_hw_scan;
2546 mac80211_hwsim_mchan_ops.cancel_hw_scan = mac80211_hwsim_cancel_hw_scan;
2547 mac80211_hwsim_mchan_ops.sw_scan_start = NULL;
2548 mac80211_hwsim_mchan_ops.sw_scan_complete = NULL;
2549 mac80211_hwsim_mchan_ops.remain_on_channel = mac80211_hwsim_roc;
2550 mac80211_hwsim_mchan_ops.cancel_remain_on_channel = mac80211_hwsim_croc;
2551 mac80211_hwsim_mchan_ops.add_chanctx = mac80211_hwsim_add_chanctx;
2552 mac80211_hwsim_mchan_ops.remove_chanctx = mac80211_hwsim_remove_chanctx;
2553 mac80211_hwsim_mchan_ops.change_chanctx = mac80211_hwsim_change_chanctx;
2554 mac80211_hwsim_mchan_ops.assign_vif_chanctx =
2555 mac80211_hwsim_assign_vif_chanctx;
2556 mac80211_hwsim_mchan_ops.unassign_vif_chanctx =
2557 mac80211_hwsim_unassign_vif_chanctx;
2558
2559 spin_lock_init(&hwsim_radio_lock);
2560 INIT_LIST_HEAD(&hwsim_radios);
2561
2562 err = platform_driver_register(&mac80211_hwsim_driver);
2563 if (err)
2564 return err;
2565
2566 hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
2567 if (IS_ERR(hwsim_class)) {
2568 err = PTR_ERR(hwsim_class);
2569 goto out_unregister_driver;
2570 }
2571
2572 for (i = 0; i < radios; i++) {
2573 const char *reg_alpha2 = NULL;
2574 const struct ieee80211_regdomain *regd = NULL;
2575 bool reg_strict = false;
2576
2577 switch (regtest) {
2578 case HWSIM_REGTEST_DIFF_COUNTRY:
2579 if (i < ARRAY_SIZE(hwsim_alpha2s))
2580 reg_alpha2 = hwsim_alpha2s[i];
2581 break;
2582 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
2583 if (!i)
2584 reg_alpha2 = hwsim_alpha2s[0];
2585 break;
2586 case HWSIM_REGTEST_STRICT_ALL:
2587 reg_strict = true;
2588 case HWSIM_REGTEST_DRIVER_REG_ALL:
2589 reg_alpha2 = hwsim_alpha2s[0];
2590 break;
2591 case HWSIM_REGTEST_WORLD_ROAM:
2592 if (i == 0)
2593 regd = &hwsim_world_regdom_custom_01;
2594 break;
2595 case HWSIM_REGTEST_CUSTOM_WORLD:
2596 regd = &hwsim_world_regdom_custom_01;
2597 break;
2598 case HWSIM_REGTEST_CUSTOM_WORLD_2:
2599 if (i == 0)
2600 regd = &hwsim_world_regdom_custom_01;
2601 else if (i == 1)
2602 regd = &hwsim_world_regdom_custom_02;
2603 break;
2604 case HWSIM_REGTEST_STRICT_FOLLOW:
2605 if (i == 0) {
2606 reg_strict = true;
2607 reg_alpha2 = hwsim_alpha2s[0];
2608 }
2609 break;
2610 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
2611 if (i == 0) {
2612 reg_strict = true;
2613 reg_alpha2 = hwsim_alpha2s[0];
2614 } else if (i == 1) {
2615 reg_alpha2 = hwsim_alpha2s[1];
2616 }
2617 break;
2618 case HWSIM_REGTEST_ALL:
2619 switch (i) {
2620 case 0:
2621 regd = &hwsim_world_regdom_custom_01;
2622 break;
2623 case 1:
2624 regd = &hwsim_world_regdom_custom_02;
2625 break;
2626 case 2:
2627 reg_alpha2 = hwsim_alpha2s[0];
2628 break;
2629 case 3:
2630 reg_alpha2 = hwsim_alpha2s[1];
2631 break;
2632 case 4:
2633 reg_strict = true;
2634 reg_alpha2 = hwsim_alpha2s[2];
2635 break;
2636 }
2637 break;
2638 default:
2639 break;
2640 }
2641
2642 err = mac80211_hwsim_create_radio(channels, reg_alpha2,
2643 regd, reg_strict);
2644 if (err < 0)
2645 goto out_free_radios;
2646 }
2647
2648 hwsim_mon = alloc_netdev(0, "hwsim%d", hwsim_mon_setup);
2649 if (hwsim_mon == NULL) {
2650 err = -ENOMEM;
2651 goto out_free_radios;
2652 }
2653
2654 rtnl_lock();
2655 err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
2656 if (err < 0) {
2657 rtnl_unlock();
2658 goto out_free_radios;
2659 }
2660
2661 err = register_netdevice(hwsim_mon);
2662 if (err < 0) {
2663 rtnl_unlock();
2664 goto out_free_mon;
2665 }
2666 rtnl_unlock();
2667
2668 err = hwsim_init_netlink();
2669 if (err < 0)
2670 goto out_free_mon;
2671
2672 return 0;
2673
2674 out_free_mon:
2675 free_netdev(hwsim_mon);
2676 out_free_radios:
2677 mac80211_hwsim_free();
2678 out_unregister_driver:
2679 platform_driver_unregister(&mac80211_hwsim_driver);
2680 return err;
2681 }
2682 module_init(init_mac80211_hwsim);
2683
2684 static void __exit exit_mac80211_hwsim(void)
2685 {
2686 printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
2687
2688 hwsim_exit_netlink();
2689
2690 mac80211_hwsim_free();
2691 unregister_netdev(hwsim_mon);
2692 platform_driver_unregister(&mac80211_hwsim_driver);
2693 }
2694 module_exit(exit_mac80211_hwsim);
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