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brcmfmac: restore mpc before passing scan status to cfg80211
[deliverable/linux.git] / drivers / net / wireless / mac80211_hwsim.c
1 /*
2 * mac80211_hwsim - software simulator of 802.11 radio(s) for mac80211
3 * Copyright (c) 2008, Jouni Malinen <j@w1.fi>
4 * Copyright (c) 2011, Javier Lopez <jlopex@gmail.com>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 */
10
11 /*
12 * TODO:
13 * - Add TSF sync and fix IBSS beacon transmission by adding
14 * competition for "air time" at TBTT
15 * - RX filtering based on filter configuration (data->rx_filter)
16 */
17
18 #include <linux/list.h>
19 #include <linux/slab.h>
20 #include <linux/spinlock.h>
21 #include <net/dst.h>
22 #include <net/xfrm.h>
23 #include <net/mac80211.h>
24 #include <net/ieee80211_radiotap.h>
25 #include <linux/if_arp.h>
26 #include <linux/rtnetlink.h>
27 #include <linux/etherdevice.h>
28 #include <linux/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 static bool support_p2p_device = true;
61 module_param(support_p2p_device, bool, 0444);
62 MODULE_PARM_DESC(support_p2p_device, "Support P2P-Device interface type");
63
64 /**
65 * enum hwsim_regtest - the type of regulatory tests we offer
66 *
67 * These are the different values you can use for the regtest
68 * module parameter. This is useful to help test world roaming
69 * and the driver regulatory_hint() call and combinations of these.
70 * If you want to do specific alpha2 regulatory domain tests simply
71 * use the userspace regulatory request as that will be respected as
72 * well without the need of this module parameter. This is designed
73 * only for testing the driver regulatory request, world roaming
74 * and all possible combinations.
75 *
76 * @HWSIM_REGTEST_DISABLED: No regulatory tests are performed,
77 * this is the default value.
78 * @HWSIM_REGTEST_DRIVER_REG_FOLLOW: Used for testing the driver regulatory
79 * hint, only one driver regulatory hint will be sent as such the
80 * secondary radios are expected to follow.
81 * @HWSIM_REGTEST_DRIVER_REG_ALL: Used for testing the driver regulatory
82 * request with all radios reporting the same regulatory domain.
83 * @HWSIM_REGTEST_DIFF_COUNTRY: Used for testing the drivers calling
84 * different regulatory domains requests. Expected behaviour is for
85 * an intersection to occur but each device will still use their
86 * respective regulatory requested domains. Subsequent radios will
87 * use the resulting intersection.
88 * @HWSIM_REGTEST_WORLD_ROAM: Used for testing the world roaming. We accomplish
89 * this by using a custom beacon-capable regulatory domain for the first
90 * radio. All other device world roam.
91 * @HWSIM_REGTEST_CUSTOM_WORLD: Used for testing the custom world regulatory
92 * domain requests. All radios will adhere to this custom world regulatory
93 * domain.
94 * @HWSIM_REGTEST_CUSTOM_WORLD_2: Used for testing 2 custom world regulatory
95 * domain requests. The first radio will adhere to the first custom world
96 * regulatory domain, the second one to the second custom world regulatory
97 * domain. All other devices will world roam.
98 * @HWSIM_REGTEST_STRICT_FOLLOW_: Used for testing strict regulatory domain
99 * settings, only the first radio will send a regulatory domain request
100 * and use strict settings. The rest of the radios are expected to follow.
101 * @HWSIM_REGTEST_STRICT_ALL: Used for testing strict regulatory domain
102 * settings. All radios will adhere to this.
103 * @HWSIM_REGTEST_STRICT_AND_DRIVER_REG: Used for testing strict regulatory
104 * domain settings, combined with secondary driver regulatory domain
105 * settings. The first radio will get a strict regulatory domain setting
106 * using the first driver regulatory request and the second radio will use
107 * non-strict settings using the second driver regulatory request. All
108 * other devices should follow the intersection created between the
109 * first two.
110 * @HWSIM_REGTEST_ALL: Used for testing every possible mix. You will need
111 * at least 6 radios for a complete test. We will test in this order:
112 * 1 - driver custom world regulatory domain
113 * 2 - second custom world regulatory domain
114 * 3 - first driver regulatory domain request
115 * 4 - second driver regulatory domain request
116 * 5 - strict regulatory domain settings using the third driver regulatory
117 * domain request
118 * 6 and on - should follow the intersection of the 3rd, 4rth and 5th radio
119 * regulatory requests.
120 */
121 enum hwsim_regtest {
122 HWSIM_REGTEST_DISABLED = 0,
123 HWSIM_REGTEST_DRIVER_REG_FOLLOW = 1,
124 HWSIM_REGTEST_DRIVER_REG_ALL = 2,
125 HWSIM_REGTEST_DIFF_COUNTRY = 3,
126 HWSIM_REGTEST_WORLD_ROAM = 4,
127 HWSIM_REGTEST_CUSTOM_WORLD = 5,
128 HWSIM_REGTEST_CUSTOM_WORLD_2 = 6,
129 HWSIM_REGTEST_STRICT_FOLLOW = 7,
130 HWSIM_REGTEST_STRICT_ALL = 8,
131 HWSIM_REGTEST_STRICT_AND_DRIVER_REG = 9,
132 HWSIM_REGTEST_ALL = 10,
133 };
134
135 /* Set to one of the HWSIM_REGTEST_* values above */
136 static int regtest = HWSIM_REGTEST_DISABLED;
137 module_param(regtest, int, 0444);
138 MODULE_PARM_DESC(regtest, "The type of regulatory test we want to run");
139
140 static const char *hwsim_alpha2s[] = {
141 "FI",
142 "AL",
143 "US",
144 "DE",
145 "JP",
146 "AL",
147 };
148
149 static const struct ieee80211_regdomain hwsim_world_regdom_custom_01 = {
150 .n_reg_rules = 4,
151 .alpha2 = "99",
152 .reg_rules = {
153 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
154 REG_RULE(2484-10, 2484+10, 40, 0, 20, 0),
155 REG_RULE(5150-10, 5240+10, 40, 0, 30, 0),
156 REG_RULE(5745-10, 5825+10, 40, 0, 30, 0),
157 }
158 };
159
160 static const struct ieee80211_regdomain hwsim_world_regdom_custom_02 = {
161 .n_reg_rules = 2,
162 .alpha2 = "99",
163 .reg_rules = {
164 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
165 REG_RULE(5725-10, 5850+10, 40, 0, 30,
166 NL80211_RRF_NO_IR),
167 }
168 };
169
170 static const struct ieee80211_regdomain *hwsim_world_regdom_custom[] = {
171 &hwsim_world_regdom_custom_01,
172 &hwsim_world_regdom_custom_02,
173 };
174
175 struct hwsim_vif_priv {
176 u32 magic;
177 u8 bssid[ETH_ALEN];
178 bool assoc;
179 bool bcn_en;
180 u16 aid;
181 };
182
183 #define HWSIM_VIF_MAGIC 0x69537748
184
185 static inline void hwsim_check_magic(struct ieee80211_vif *vif)
186 {
187 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
188 WARN(vp->magic != HWSIM_VIF_MAGIC,
189 "Invalid VIF (%p) magic %#x, %pM, %d/%d\n",
190 vif, vp->magic, vif->addr, vif->type, vif->p2p);
191 }
192
193 static inline void hwsim_set_magic(struct ieee80211_vif *vif)
194 {
195 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
196 vp->magic = HWSIM_VIF_MAGIC;
197 }
198
199 static inline void hwsim_clear_magic(struct ieee80211_vif *vif)
200 {
201 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
202 vp->magic = 0;
203 }
204
205 struct hwsim_sta_priv {
206 u32 magic;
207 };
208
209 #define HWSIM_STA_MAGIC 0x6d537749
210
211 static inline void hwsim_check_sta_magic(struct ieee80211_sta *sta)
212 {
213 struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
214 WARN_ON(sp->magic != HWSIM_STA_MAGIC);
215 }
216
217 static inline void hwsim_set_sta_magic(struct ieee80211_sta *sta)
218 {
219 struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
220 sp->magic = HWSIM_STA_MAGIC;
221 }
222
223 static inline void hwsim_clear_sta_magic(struct ieee80211_sta *sta)
224 {
225 struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
226 sp->magic = 0;
227 }
228
229 struct hwsim_chanctx_priv {
230 u32 magic;
231 };
232
233 #define HWSIM_CHANCTX_MAGIC 0x6d53774a
234
235 static inline void hwsim_check_chanctx_magic(struct ieee80211_chanctx_conf *c)
236 {
237 struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
238 WARN_ON(cp->magic != HWSIM_CHANCTX_MAGIC);
239 }
240
241 static inline void hwsim_set_chanctx_magic(struct ieee80211_chanctx_conf *c)
242 {
243 struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
244 cp->magic = HWSIM_CHANCTX_MAGIC;
245 }
246
247 static inline void hwsim_clear_chanctx_magic(struct ieee80211_chanctx_conf *c)
248 {
249 struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
250 cp->magic = 0;
251 }
252
253 static struct class *hwsim_class;
254
255 static struct net_device *hwsim_mon; /* global monitor netdev */
256
257 #define CHAN2G(_freq) { \
258 .band = IEEE80211_BAND_2GHZ, \
259 .center_freq = (_freq), \
260 .hw_value = (_freq), \
261 .max_power = 20, \
262 }
263
264 #define CHAN5G(_freq) { \
265 .band = IEEE80211_BAND_5GHZ, \
266 .center_freq = (_freq), \
267 .hw_value = (_freq), \
268 .max_power = 20, \
269 }
270
271 static const struct ieee80211_channel hwsim_channels_2ghz[] = {
272 CHAN2G(2412), /* Channel 1 */
273 CHAN2G(2417), /* Channel 2 */
274 CHAN2G(2422), /* Channel 3 */
275 CHAN2G(2427), /* Channel 4 */
276 CHAN2G(2432), /* Channel 5 */
277 CHAN2G(2437), /* Channel 6 */
278 CHAN2G(2442), /* Channel 7 */
279 CHAN2G(2447), /* Channel 8 */
280 CHAN2G(2452), /* Channel 9 */
281 CHAN2G(2457), /* Channel 10 */
282 CHAN2G(2462), /* Channel 11 */
283 CHAN2G(2467), /* Channel 12 */
284 CHAN2G(2472), /* Channel 13 */
285 CHAN2G(2484), /* Channel 14 */
286 };
287
288 static const struct ieee80211_channel hwsim_channels_5ghz[] = {
289 CHAN5G(5180), /* Channel 36 */
290 CHAN5G(5200), /* Channel 40 */
291 CHAN5G(5220), /* Channel 44 */
292 CHAN5G(5240), /* Channel 48 */
293
294 CHAN5G(5260), /* Channel 52 */
295 CHAN5G(5280), /* Channel 56 */
296 CHAN5G(5300), /* Channel 60 */
297 CHAN5G(5320), /* Channel 64 */
298
299 CHAN5G(5500), /* Channel 100 */
300 CHAN5G(5520), /* Channel 104 */
301 CHAN5G(5540), /* Channel 108 */
302 CHAN5G(5560), /* Channel 112 */
303 CHAN5G(5580), /* Channel 116 */
304 CHAN5G(5600), /* Channel 120 */
305 CHAN5G(5620), /* Channel 124 */
306 CHAN5G(5640), /* Channel 128 */
307 CHAN5G(5660), /* Channel 132 */
308 CHAN5G(5680), /* Channel 136 */
309 CHAN5G(5700), /* Channel 140 */
310
311 CHAN5G(5745), /* Channel 149 */
312 CHAN5G(5765), /* Channel 153 */
313 CHAN5G(5785), /* Channel 157 */
314 CHAN5G(5805), /* Channel 161 */
315 CHAN5G(5825), /* Channel 165 */
316 };
317
318 static const struct ieee80211_rate hwsim_rates[] = {
319 { .bitrate = 10 },
320 { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
321 { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
322 { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
323 { .bitrate = 60 },
324 { .bitrate = 90 },
325 { .bitrate = 120 },
326 { .bitrate = 180 },
327 { .bitrate = 240 },
328 { .bitrate = 360 },
329 { .bitrate = 480 },
330 { .bitrate = 540 }
331 };
332
333 static const struct ieee80211_iface_limit hwsim_if_limits[] = {
334 { .max = 1, .types = BIT(NL80211_IFTYPE_ADHOC) },
335 { .max = 2048, .types = BIT(NL80211_IFTYPE_STATION) |
336 BIT(NL80211_IFTYPE_P2P_CLIENT) |
337 #ifdef CONFIG_MAC80211_MESH
338 BIT(NL80211_IFTYPE_MESH_POINT) |
339 #endif
340 BIT(NL80211_IFTYPE_AP) |
341 BIT(NL80211_IFTYPE_P2P_GO) },
342 /* must be last, see hwsim_if_comb */
343 { .max = 1, .types = BIT(NL80211_IFTYPE_P2P_DEVICE) }
344 };
345
346 static const struct ieee80211_iface_limit hwsim_if_dfs_limits[] = {
347 { .max = 8, .types = BIT(NL80211_IFTYPE_AP) },
348 };
349
350 static const struct ieee80211_iface_combination hwsim_if_comb[] = {
351 {
352 .limits = hwsim_if_limits,
353 /* remove the last entry which is P2P_DEVICE */
354 .n_limits = ARRAY_SIZE(hwsim_if_limits) - 1,
355 .max_interfaces = 2048,
356 .num_different_channels = 1,
357 },
358 {
359 .limits = hwsim_if_dfs_limits,
360 .n_limits = ARRAY_SIZE(hwsim_if_dfs_limits),
361 .max_interfaces = 8,
362 .num_different_channels = 1,
363 .radar_detect_widths = BIT(NL80211_CHAN_WIDTH_20_NOHT) |
364 BIT(NL80211_CHAN_WIDTH_20) |
365 BIT(NL80211_CHAN_WIDTH_40) |
366 BIT(NL80211_CHAN_WIDTH_80) |
367 BIT(NL80211_CHAN_WIDTH_160),
368 }
369 };
370
371 static const struct ieee80211_iface_combination hwsim_if_comb_p2p_dev[] = {
372 {
373 .limits = hwsim_if_limits,
374 .n_limits = ARRAY_SIZE(hwsim_if_limits),
375 .max_interfaces = 2048,
376 .num_different_channels = 1,
377 },
378 {
379 .limits = hwsim_if_dfs_limits,
380 .n_limits = ARRAY_SIZE(hwsim_if_dfs_limits),
381 .max_interfaces = 8,
382 .num_different_channels = 1,
383 .radar_detect_widths = BIT(NL80211_CHAN_WIDTH_20_NOHT) |
384 BIT(NL80211_CHAN_WIDTH_20) |
385 BIT(NL80211_CHAN_WIDTH_40) |
386 BIT(NL80211_CHAN_WIDTH_80) |
387 BIT(NL80211_CHAN_WIDTH_160),
388 }
389 };
390
391 static spinlock_t hwsim_radio_lock;
392 static struct list_head hwsim_radios;
393 static int hwsim_radio_idx;
394
395 static struct platform_driver mac80211_hwsim_driver = {
396 .driver = {
397 .name = "mac80211_hwsim",
398 .owner = THIS_MODULE,
399 },
400 };
401
402 struct mac80211_hwsim_data {
403 struct list_head list;
404 struct ieee80211_hw *hw;
405 struct device *dev;
406 struct ieee80211_supported_band bands[IEEE80211_NUM_BANDS];
407 struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)];
408 struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)];
409 struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
410 struct ieee80211_iface_combination if_combination;
411
412 struct mac_address addresses[2];
413 int channels, idx;
414 bool use_chanctx;
415
416 struct ieee80211_channel *tmp_chan;
417 struct delayed_work roc_done;
418 struct delayed_work hw_scan;
419 struct cfg80211_scan_request *hw_scan_request;
420 struct ieee80211_vif *hw_scan_vif;
421 int scan_chan_idx;
422
423 struct ieee80211_channel *channel;
424 u64 beacon_int /* beacon interval in us */;
425 unsigned int rx_filter;
426 bool started, idle, scanning;
427 struct mutex mutex;
428 struct tasklet_hrtimer beacon_timer;
429 enum ps_mode {
430 PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
431 } ps;
432 bool ps_poll_pending;
433 struct dentry *debugfs;
434
435 struct sk_buff_head pending; /* packets pending */
436 /*
437 * Only radios in the same group can communicate together (the
438 * channel has to match too). Each bit represents a group. A
439 * radio can be in more then one group.
440 */
441 u64 group;
442
443 int power_level;
444
445 /* difference between this hw's clock and the real clock, in usecs */
446 s64 tsf_offset;
447 s64 bcn_delta;
448 /* absolute beacon transmission time. Used to cover up "tx" delay. */
449 u64 abs_bcn_ts;
450 };
451
452
453 struct hwsim_radiotap_hdr {
454 struct ieee80211_radiotap_header hdr;
455 __le64 rt_tsft;
456 u8 rt_flags;
457 u8 rt_rate;
458 __le16 rt_channel;
459 __le16 rt_chbitmask;
460 } __packed;
461
462 struct hwsim_radiotap_ack_hdr {
463 struct ieee80211_radiotap_header hdr;
464 u8 rt_flags;
465 u8 pad;
466 __le16 rt_channel;
467 __le16 rt_chbitmask;
468 } __packed;
469
470 /* MAC80211_HWSIM netlinf family */
471 static struct genl_family hwsim_genl_family = {
472 .id = GENL_ID_GENERATE,
473 .hdrsize = 0,
474 .name = "MAC80211_HWSIM",
475 .version = 1,
476 .maxattr = HWSIM_ATTR_MAX,
477 };
478
479 /* MAC80211_HWSIM netlink policy */
480
481 static const struct nla_policy hwsim_genl_policy[HWSIM_ATTR_MAX + 1] = {
482 [HWSIM_ATTR_ADDR_RECEIVER] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
483 [HWSIM_ATTR_ADDR_TRANSMITTER] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
484 [HWSIM_ATTR_FRAME] = { .type = NLA_BINARY,
485 .len = IEEE80211_MAX_DATA_LEN },
486 [HWSIM_ATTR_FLAGS] = { .type = NLA_U32 },
487 [HWSIM_ATTR_RX_RATE] = { .type = NLA_U32 },
488 [HWSIM_ATTR_SIGNAL] = { .type = NLA_U32 },
489 [HWSIM_ATTR_TX_INFO] = { .type = NLA_UNSPEC,
490 .len = IEEE80211_TX_MAX_RATES *
491 sizeof(struct hwsim_tx_rate)},
492 [HWSIM_ATTR_COOKIE] = { .type = NLA_U64 },
493 [HWSIM_ATTR_CHANNELS] = { .type = NLA_U32 },
494 [HWSIM_ATTR_RADIO_ID] = { .type = NLA_U32 },
495 [HWSIM_ATTR_REG_HINT_ALPHA2] = { .type = NLA_STRING, .len = 2 },
496 [HWSIM_ATTR_REG_CUSTOM_REG] = { .type = NLA_U32 },
497 [HWSIM_ATTR_REG_STRICT_REG] = { .type = NLA_FLAG },
498 [HWSIM_ATTR_SUPPORT_P2P_DEVICE] = { .type = NLA_FLAG },
499 };
500
501 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
502 struct sk_buff *skb,
503 struct ieee80211_channel *chan);
504
505 /* sysfs attributes */
506 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
507 {
508 struct mac80211_hwsim_data *data = dat;
509 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
510 struct sk_buff *skb;
511 struct ieee80211_pspoll *pspoll;
512
513 if (!vp->assoc)
514 return;
515
516 wiphy_debug(data->hw->wiphy,
517 "%s: send PS-Poll to %pM for aid %d\n",
518 __func__, vp->bssid, vp->aid);
519
520 skb = dev_alloc_skb(sizeof(*pspoll));
521 if (!skb)
522 return;
523 pspoll = (void *) skb_put(skb, sizeof(*pspoll));
524 pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
525 IEEE80211_STYPE_PSPOLL |
526 IEEE80211_FCTL_PM);
527 pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
528 memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
529 memcpy(pspoll->ta, mac, ETH_ALEN);
530
531 rcu_read_lock();
532 mac80211_hwsim_tx_frame(data->hw, skb,
533 rcu_dereference(vif->chanctx_conf)->def.chan);
534 rcu_read_unlock();
535 }
536
537 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
538 struct ieee80211_vif *vif, int ps)
539 {
540 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
541 struct sk_buff *skb;
542 struct ieee80211_hdr *hdr;
543
544 if (!vp->assoc)
545 return;
546
547 wiphy_debug(data->hw->wiphy,
548 "%s: send data::nullfunc to %pM ps=%d\n",
549 __func__, vp->bssid, ps);
550
551 skb = dev_alloc_skb(sizeof(*hdr));
552 if (!skb)
553 return;
554 hdr = (void *) skb_put(skb, sizeof(*hdr) - ETH_ALEN);
555 hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
556 IEEE80211_STYPE_NULLFUNC |
557 (ps ? IEEE80211_FCTL_PM : 0));
558 hdr->duration_id = cpu_to_le16(0);
559 memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
560 memcpy(hdr->addr2, mac, ETH_ALEN);
561 memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
562
563 rcu_read_lock();
564 mac80211_hwsim_tx_frame(data->hw, skb,
565 rcu_dereference(vif->chanctx_conf)->def.chan);
566 rcu_read_unlock();
567 }
568
569
570 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
571 struct ieee80211_vif *vif)
572 {
573 struct mac80211_hwsim_data *data = dat;
574 hwsim_send_nullfunc(data, mac, vif, 1);
575 }
576
577 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
578 struct ieee80211_vif *vif)
579 {
580 struct mac80211_hwsim_data *data = dat;
581 hwsim_send_nullfunc(data, mac, vif, 0);
582 }
583
584 static int hwsim_fops_ps_read(void *dat, u64 *val)
585 {
586 struct mac80211_hwsim_data *data = dat;
587 *val = data->ps;
588 return 0;
589 }
590
591 static int hwsim_fops_ps_write(void *dat, u64 val)
592 {
593 struct mac80211_hwsim_data *data = dat;
594 enum ps_mode old_ps;
595
596 if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
597 val != PS_MANUAL_POLL)
598 return -EINVAL;
599
600 old_ps = data->ps;
601 data->ps = val;
602
603 if (val == PS_MANUAL_POLL) {
604 ieee80211_iterate_active_interfaces(data->hw,
605 IEEE80211_IFACE_ITER_NORMAL,
606 hwsim_send_ps_poll, data);
607 data->ps_poll_pending = true;
608 } else if (old_ps == PS_DISABLED && val != PS_DISABLED) {
609 ieee80211_iterate_active_interfaces(data->hw,
610 IEEE80211_IFACE_ITER_NORMAL,
611 hwsim_send_nullfunc_ps,
612 data);
613 } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
614 ieee80211_iterate_active_interfaces(data->hw,
615 IEEE80211_IFACE_ITER_NORMAL,
616 hwsim_send_nullfunc_no_ps,
617 data);
618 }
619
620 return 0;
621 }
622
623 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
624 "%llu\n");
625
626 static int hwsim_write_simulate_radar(void *dat, u64 val)
627 {
628 struct mac80211_hwsim_data *data = dat;
629
630 ieee80211_radar_detected(data->hw);
631
632 return 0;
633 }
634
635 DEFINE_SIMPLE_ATTRIBUTE(hwsim_simulate_radar, NULL,
636 hwsim_write_simulate_radar, "%llu\n");
637
638 static int hwsim_fops_group_read(void *dat, u64 *val)
639 {
640 struct mac80211_hwsim_data *data = dat;
641 *val = data->group;
642 return 0;
643 }
644
645 static int hwsim_fops_group_write(void *dat, u64 val)
646 {
647 struct mac80211_hwsim_data *data = dat;
648 data->group = val;
649 return 0;
650 }
651
652 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
653 hwsim_fops_group_read, hwsim_fops_group_write,
654 "%llx\n");
655
656 static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
657 struct net_device *dev)
658 {
659 /* TODO: allow packet injection */
660 dev_kfree_skb(skb);
661 return NETDEV_TX_OK;
662 }
663
664 static inline u64 mac80211_hwsim_get_tsf_raw(void)
665 {
666 return ktime_to_us(ktime_get_real());
667 }
668
669 static __le64 __mac80211_hwsim_get_tsf(struct mac80211_hwsim_data *data)
670 {
671 u64 now = mac80211_hwsim_get_tsf_raw();
672 return cpu_to_le64(now + data->tsf_offset);
673 }
674
675 static u64 mac80211_hwsim_get_tsf(struct ieee80211_hw *hw,
676 struct ieee80211_vif *vif)
677 {
678 struct mac80211_hwsim_data *data = hw->priv;
679 return le64_to_cpu(__mac80211_hwsim_get_tsf(data));
680 }
681
682 static void mac80211_hwsim_set_tsf(struct ieee80211_hw *hw,
683 struct ieee80211_vif *vif, u64 tsf)
684 {
685 struct mac80211_hwsim_data *data = hw->priv;
686 u64 now = mac80211_hwsim_get_tsf(hw, vif);
687 u32 bcn_int = data->beacon_int;
688 s64 delta = tsf - now;
689
690 data->tsf_offset += delta;
691 /* adjust after beaconing with new timestamp at old TBTT */
692 data->bcn_delta = do_div(delta, bcn_int);
693 }
694
695 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
696 struct sk_buff *tx_skb,
697 struct ieee80211_channel *chan)
698 {
699 struct mac80211_hwsim_data *data = hw->priv;
700 struct sk_buff *skb;
701 struct hwsim_radiotap_hdr *hdr;
702 u16 flags;
703 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
704 struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
705
706 if (!netif_running(hwsim_mon))
707 return;
708
709 skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
710 if (skb == NULL)
711 return;
712
713 hdr = (struct hwsim_radiotap_hdr *) skb_push(skb, sizeof(*hdr));
714 hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
715 hdr->hdr.it_pad = 0;
716 hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
717 hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
718 (1 << IEEE80211_RADIOTAP_RATE) |
719 (1 << IEEE80211_RADIOTAP_TSFT) |
720 (1 << IEEE80211_RADIOTAP_CHANNEL));
721 hdr->rt_tsft = __mac80211_hwsim_get_tsf(data);
722 hdr->rt_flags = 0;
723 hdr->rt_rate = txrate->bitrate / 5;
724 hdr->rt_channel = cpu_to_le16(chan->center_freq);
725 flags = IEEE80211_CHAN_2GHZ;
726 if (txrate->flags & IEEE80211_RATE_ERP_G)
727 flags |= IEEE80211_CHAN_OFDM;
728 else
729 flags |= IEEE80211_CHAN_CCK;
730 hdr->rt_chbitmask = cpu_to_le16(flags);
731
732 skb->dev = hwsim_mon;
733 skb_set_mac_header(skb, 0);
734 skb->ip_summed = CHECKSUM_UNNECESSARY;
735 skb->pkt_type = PACKET_OTHERHOST;
736 skb->protocol = htons(ETH_P_802_2);
737 memset(skb->cb, 0, sizeof(skb->cb));
738 netif_rx(skb);
739 }
740
741
742 static void mac80211_hwsim_monitor_ack(struct ieee80211_channel *chan,
743 const u8 *addr)
744 {
745 struct sk_buff *skb;
746 struct hwsim_radiotap_ack_hdr *hdr;
747 u16 flags;
748 struct ieee80211_hdr *hdr11;
749
750 if (!netif_running(hwsim_mon))
751 return;
752
753 skb = dev_alloc_skb(100);
754 if (skb == NULL)
755 return;
756
757 hdr = (struct hwsim_radiotap_ack_hdr *) skb_put(skb, sizeof(*hdr));
758 hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
759 hdr->hdr.it_pad = 0;
760 hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
761 hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
762 (1 << IEEE80211_RADIOTAP_CHANNEL));
763 hdr->rt_flags = 0;
764 hdr->pad = 0;
765 hdr->rt_channel = cpu_to_le16(chan->center_freq);
766 flags = IEEE80211_CHAN_2GHZ;
767 hdr->rt_chbitmask = cpu_to_le16(flags);
768
769 hdr11 = (struct ieee80211_hdr *) skb_put(skb, 10);
770 hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
771 IEEE80211_STYPE_ACK);
772 hdr11->duration_id = cpu_to_le16(0);
773 memcpy(hdr11->addr1, addr, ETH_ALEN);
774
775 skb->dev = hwsim_mon;
776 skb_set_mac_header(skb, 0);
777 skb->ip_summed = CHECKSUM_UNNECESSARY;
778 skb->pkt_type = PACKET_OTHERHOST;
779 skb->protocol = htons(ETH_P_802_2);
780 memset(skb->cb, 0, sizeof(skb->cb));
781 netif_rx(skb);
782 }
783
784
785 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
786 struct sk_buff *skb)
787 {
788 switch (data->ps) {
789 case PS_DISABLED:
790 return true;
791 case PS_ENABLED:
792 return false;
793 case PS_AUTO_POLL:
794 /* TODO: accept (some) Beacons by default and other frames only
795 * if pending PS-Poll has been sent */
796 return true;
797 case PS_MANUAL_POLL:
798 /* Allow unicast frames to own address if there is a pending
799 * PS-Poll */
800 if (data->ps_poll_pending &&
801 memcmp(data->hw->wiphy->perm_addr, skb->data + 4,
802 ETH_ALEN) == 0) {
803 data->ps_poll_pending = false;
804 return true;
805 }
806 return false;
807 }
808
809 return true;
810 }
811
812
813 struct mac80211_hwsim_addr_match_data {
814 bool ret;
815 const u8 *addr;
816 };
817
818 static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
819 struct ieee80211_vif *vif)
820 {
821 struct mac80211_hwsim_addr_match_data *md = data;
822 if (memcmp(mac, md->addr, ETH_ALEN) == 0)
823 md->ret = true;
824 }
825
826
827 static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
828 const u8 *addr)
829 {
830 struct mac80211_hwsim_addr_match_data md;
831
832 if (memcmp(addr, data->hw->wiphy->perm_addr, ETH_ALEN) == 0)
833 return true;
834
835 md.ret = false;
836 md.addr = addr;
837 ieee80211_iterate_active_interfaces_atomic(data->hw,
838 IEEE80211_IFACE_ITER_NORMAL,
839 mac80211_hwsim_addr_iter,
840 &md);
841
842 return md.ret;
843 }
844
845 static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
846 struct sk_buff *my_skb,
847 int dst_portid)
848 {
849 struct sk_buff *skb;
850 struct mac80211_hwsim_data *data = hw->priv;
851 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) my_skb->data;
852 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(my_skb);
853 void *msg_head;
854 unsigned int hwsim_flags = 0;
855 int i;
856 struct hwsim_tx_rate tx_attempts[IEEE80211_TX_MAX_RATES];
857
858 if (data->ps != PS_DISABLED)
859 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
860 /* If the queue contains MAX_QUEUE skb's drop some */
861 if (skb_queue_len(&data->pending) >= MAX_QUEUE) {
862 /* Droping until WARN_QUEUE level */
863 while (skb_queue_len(&data->pending) >= WARN_QUEUE)
864 skb_dequeue(&data->pending);
865 }
866
867 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_ATOMIC);
868 if (skb == NULL)
869 goto nla_put_failure;
870
871 msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
872 HWSIM_CMD_FRAME);
873 if (msg_head == NULL) {
874 printk(KERN_DEBUG "mac80211_hwsim: problem with msg_head\n");
875 goto nla_put_failure;
876 }
877
878 if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
879 ETH_ALEN, data->addresses[1].addr))
880 goto nla_put_failure;
881
882 /* We get the skb->data */
883 if (nla_put(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data))
884 goto nla_put_failure;
885
886 /* We get the flags for this transmission, and we translate them to
887 wmediumd flags */
888
889 if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
890 hwsim_flags |= HWSIM_TX_CTL_REQ_TX_STATUS;
891
892 if (info->flags & IEEE80211_TX_CTL_NO_ACK)
893 hwsim_flags |= HWSIM_TX_CTL_NO_ACK;
894
895 if (nla_put_u32(skb, HWSIM_ATTR_FLAGS, hwsim_flags))
896 goto nla_put_failure;
897
898 /* We get the tx control (rate and retries) info*/
899
900 for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
901 tx_attempts[i].idx = info->status.rates[i].idx;
902 tx_attempts[i].count = info->status.rates[i].count;
903 }
904
905 if (nla_put(skb, HWSIM_ATTR_TX_INFO,
906 sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
907 tx_attempts))
908 goto nla_put_failure;
909
910 /* We create a cookie to identify this skb */
911 if (nla_put_u64(skb, HWSIM_ATTR_COOKIE, (unsigned long) my_skb))
912 goto nla_put_failure;
913
914 genlmsg_end(skb, msg_head);
915 genlmsg_unicast(&init_net, skb, dst_portid);
916
917 /* Enqueue the packet */
918 skb_queue_tail(&data->pending, my_skb);
919 return;
920
921 nla_put_failure:
922 printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
923 }
924
925 static bool hwsim_chans_compat(struct ieee80211_channel *c1,
926 struct ieee80211_channel *c2)
927 {
928 if (!c1 || !c2)
929 return false;
930
931 return c1->center_freq == c2->center_freq;
932 }
933
934 struct tx_iter_data {
935 struct ieee80211_channel *channel;
936 bool receive;
937 };
938
939 static void mac80211_hwsim_tx_iter(void *_data, u8 *addr,
940 struct ieee80211_vif *vif)
941 {
942 struct tx_iter_data *data = _data;
943
944 if (!vif->chanctx_conf)
945 return;
946
947 if (!hwsim_chans_compat(data->channel,
948 rcu_dereference(vif->chanctx_conf)->def.chan))
949 return;
950
951 data->receive = true;
952 }
953
954 static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
955 struct sk_buff *skb,
956 struct ieee80211_channel *chan)
957 {
958 struct mac80211_hwsim_data *data = hw->priv, *data2;
959 bool ack = false;
960 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
961 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
962 struct ieee80211_rx_status rx_status;
963 u64 now;
964
965 memset(&rx_status, 0, sizeof(rx_status));
966 rx_status.flag |= RX_FLAG_MACTIME_START;
967 rx_status.freq = chan->center_freq;
968 rx_status.band = chan->band;
969 if (info->control.rates[0].flags & IEEE80211_TX_RC_VHT_MCS) {
970 rx_status.rate_idx =
971 ieee80211_rate_get_vht_mcs(&info->control.rates[0]);
972 rx_status.vht_nss =
973 ieee80211_rate_get_vht_nss(&info->control.rates[0]);
974 rx_status.flag |= RX_FLAG_VHT;
975 } else {
976 rx_status.rate_idx = info->control.rates[0].idx;
977 if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
978 rx_status.flag |= RX_FLAG_HT;
979 }
980 if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
981 rx_status.flag |= RX_FLAG_40MHZ;
982 if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
983 rx_status.flag |= RX_FLAG_SHORT_GI;
984 /* TODO: simulate real signal strength (and optional packet loss) */
985 rx_status.signal = data->power_level - 50;
986
987 if (data->ps != PS_DISABLED)
988 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
989
990 /* release the skb's source info */
991 skb_orphan(skb);
992 skb_dst_drop(skb);
993 skb->mark = 0;
994 secpath_reset(skb);
995 nf_reset(skb);
996
997 /*
998 * Get absolute mactime here so all HWs RX at the "same time", and
999 * absolute TX time for beacon mactime so the timestamp matches.
1000 * Giving beacons a different mactime than non-beacons looks messy, but
1001 * it helps the Toffset be exact and a ~10us mactime discrepancy
1002 * probably doesn't really matter.
1003 */
1004 if (ieee80211_is_beacon(hdr->frame_control) ||
1005 ieee80211_is_probe_resp(hdr->frame_control))
1006 now = data->abs_bcn_ts;
1007 else
1008 now = mac80211_hwsim_get_tsf_raw();
1009
1010 /* Copy skb to all enabled radios that are on the current frequency */
1011 spin_lock(&hwsim_radio_lock);
1012 list_for_each_entry(data2, &hwsim_radios, list) {
1013 struct sk_buff *nskb;
1014 struct tx_iter_data tx_iter_data = {
1015 .receive = false,
1016 .channel = chan,
1017 };
1018
1019 if (data == data2)
1020 continue;
1021
1022 if (!data2->started || (data2->idle && !data2->tmp_chan) ||
1023 !hwsim_ps_rx_ok(data2, skb))
1024 continue;
1025
1026 if (!(data->group & data2->group))
1027 continue;
1028
1029 if (!hwsim_chans_compat(chan, data2->tmp_chan) &&
1030 !hwsim_chans_compat(chan, data2->channel)) {
1031 ieee80211_iterate_active_interfaces_atomic(
1032 data2->hw, IEEE80211_IFACE_ITER_NORMAL,
1033 mac80211_hwsim_tx_iter, &tx_iter_data);
1034 if (!tx_iter_data.receive)
1035 continue;
1036 }
1037
1038 /*
1039 * reserve some space for our vendor and the normal
1040 * radiotap header, since we're copying anyway
1041 */
1042 if (skb->len < PAGE_SIZE && paged_rx) {
1043 struct page *page = alloc_page(GFP_ATOMIC);
1044
1045 if (!page)
1046 continue;
1047
1048 nskb = dev_alloc_skb(128);
1049 if (!nskb) {
1050 __free_page(page);
1051 continue;
1052 }
1053
1054 memcpy(page_address(page), skb->data, skb->len);
1055 skb_add_rx_frag(nskb, 0, page, 0, skb->len, skb->len);
1056 } else {
1057 nskb = skb_copy(skb, GFP_ATOMIC);
1058 if (!nskb)
1059 continue;
1060 }
1061
1062 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
1063 ack = true;
1064
1065 rx_status.mactime = now + data2->tsf_offset;
1066
1067 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
1068 ieee80211_rx_irqsafe(data2->hw, nskb);
1069 }
1070 spin_unlock(&hwsim_radio_lock);
1071
1072 return ack;
1073 }
1074
1075 static void mac80211_hwsim_tx(struct ieee80211_hw *hw,
1076 struct ieee80211_tx_control *control,
1077 struct sk_buff *skb)
1078 {
1079 struct mac80211_hwsim_data *data = hw->priv;
1080 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1081 struct ieee80211_chanctx_conf *chanctx_conf;
1082 struct ieee80211_channel *channel;
1083 bool ack;
1084 u32 _portid;
1085
1086 if (WARN_ON(skb->len < 10)) {
1087 /* Should not happen; just a sanity check for addr1 use */
1088 ieee80211_free_txskb(hw, skb);
1089 return;
1090 }
1091
1092 if (!data->use_chanctx) {
1093 channel = data->channel;
1094 } else if (txi->hw_queue == 4) {
1095 channel = data->tmp_chan;
1096 } else {
1097 chanctx_conf = rcu_dereference(txi->control.vif->chanctx_conf);
1098 if (chanctx_conf)
1099 channel = chanctx_conf->def.chan;
1100 else
1101 channel = NULL;
1102 }
1103
1104 if (WARN(!channel, "TX w/o channel - queue = %d\n", txi->hw_queue)) {
1105 ieee80211_free_txskb(hw, skb);
1106 return;
1107 }
1108
1109 if (data->idle && !data->tmp_chan) {
1110 wiphy_debug(hw->wiphy, "Trying to TX when idle - reject\n");
1111 ieee80211_free_txskb(hw, skb);
1112 return;
1113 }
1114
1115 if (txi->control.vif)
1116 hwsim_check_magic(txi->control.vif);
1117 if (control->sta)
1118 hwsim_check_sta_magic(control->sta);
1119
1120 if (hw->flags & IEEE80211_HW_SUPPORTS_RC_TABLE)
1121 ieee80211_get_tx_rates(txi->control.vif, control->sta, skb,
1122 txi->control.rates,
1123 ARRAY_SIZE(txi->control.rates));
1124
1125 txi->rate_driver_data[0] = channel;
1126 mac80211_hwsim_monitor_rx(hw, skb, channel);
1127
1128 /* wmediumd mode check */
1129 _portid = ACCESS_ONCE(wmediumd_portid);
1130
1131 if (_portid)
1132 return mac80211_hwsim_tx_frame_nl(hw, skb, _portid);
1133
1134 /* NO wmediumd detected, perfect medium simulation */
1135 ack = mac80211_hwsim_tx_frame_no_nl(hw, skb, channel);
1136
1137 if (ack && skb->len >= 16) {
1138 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1139 mac80211_hwsim_monitor_ack(channel, hdr->addr2);
1140 }
1141
1142 ieee80211_tx_info_clear_status(txi);
1143
1144 /* frame was transmitted at most favorable rate at first attempt */
1145 txi->control.rates[0].count = 1;
1146 txi->control.rates[1].idx = -1;
1147
1148 if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
1149 txi->flags |= IEEE80211_TX_STAT_ACK;
1150 ieee80211_tx_status_irqsafe(hw, skb);
1151 }
1152
1153
1154 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
1155 {
1156 struct mac80211_hwsim_data *data = hw->priv;
1157 wiphy_debug(hw->wiphy, "%s\n", __func__);
1158 data->started = true;
1159 return 0;
1160 }
1161
1162
1163 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
1164 {
1165 struct mac80211_hwsim_data *data = hw->priv;
1166 data->started = false;
1167 tasklet_hrtimer_cancel(&data->beacon_timer);
1168 wiphy_debug(hw->wiphy, "%s\n", __func__);
1169 }
1170
1171
1172 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
1173 struct ieee80211_vif *vif)
1174 {
1175 wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1176 __func__, ieee80211_vif_type_p2p(vif),
1177 vif->addr);
1178 hwsim_set_magic(vif);
1179
1180 vif->cab_queue = 0;
1181 vif->hw_queue[IEEE80211_AC_VO] = 0;
1182 vif->hw_queue[IEEE80211_AC_VI] = 1;
1183 vif->hw_queue[IEEE80211_AC_BE] = 2;
1184 vif->hw_queue[IEEE80211_AC_BK] = 3;
1185
1186 return 0;
1187 }
1188
1189
1190 static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
1191 struct ieee80211_vif *vif,
1192 enum nl80211_iftype newtype,
1193 bool newp2p)
1194 {
1195 newtype = ieee80211_iftype_p2p(newtype, newp2p);
1196 wiphy_debug(hw->wiphy,
1197 "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
1198 __func__, ieee80211_vif_type_p2p(vif),
1199 newtype, vif->addr);
1200 hwsim_check_magic(vif);
1201
1202 /*
1203 * interface may change from non-AP to AP in
1204 * which case this needs to be set up again
1205 */
1206 vif->cab_queue = 0;
1207
1208 return 0;
1209 }
1210
1211 static void mac80211_hwsim_remove_interface(
1212 struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1213 {
1214 wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1215 __func__, ieee80211_vif_type_p2p(vif),
1216 vif->addr);
1217 hwsim_check_magic(vif);
1218 hwsim_clear_magic(vif);
1219 }
1220
1221 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
1222 struct sk_buff *skb,
1223 struct ieee80211_channel *chan)
1224 {
1225 u32 _pid = ACCESS_ONCE(wmediumd_portid);
1226
1227 if (hw->flags & IEEE80211_HW_SUPPORTS_RC_TABLE) {
1228 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1229 ieee80211_get_tx_rates(txi->control.vif, NULL, skb,
1230 txi->control.rates,
1231 ARRAY_SIZE(txi->control.rates));
1232 }
1233
1234 mac80211_hwsim_monitor_rx(hw, skb, chan);
1235
1236 if (_pid)
1237 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
1238
1239 mac80211_hwsim_tx_frame_no_nl(hw, skb, chan);
1240 dev_kfree_skb(skb);
1241 }
1242
1243 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
1244 struct ieee80211_vif *vif)
1245 {
1246 struct mac80211_hwsim_data *data = arg;
1247 struct ieee80211_hw *hw = data->hw;
1248 struct ieee80211_tx_info *info;
1249 struct ieee80211_rate *txrate;
1250 struct ieee80211_mgmt *mgmt;
1251 struct sk_buff *skb;
1252
1253 hwsim_check_magic(vif);
1254
1255 if (vif->type != NL80211_IFTYPE_AP &&
1256 vif->type != NL80211_IFTYPE_MESH_POINT &&
1257 vif->type != NL80211_IFTYPE_ADHOC)
1258 return;
1259
1260 skb = ieee80211_beacon_get(hw, vif);
1261 if (skb == NULL)
1262 return;
1263 info = IEEE80211_SKB_CB(skb);
1264 if (hw->flags & IEEE80211_HW_SUPPORTS_RC_TABLE)
1265 ieee80211_get_tx_rates(vif, NULL, skb,
1266 info->control.rates,
1267 ARRAY_SIZE(info->control.rates));
1268
1269 txrate = ieee80211_get_tx_rate(hw, info);
1270
1271 mgmt = (struct ieee80211_mgmt *) skb->data;
1272 /* fake header transmission time */
1273 data->abs_bcn_ts = mac80211_hwsim_get_tsf_raw();
1274 mgmt->u.beacon.timestamp = cpu_to_le64(data->abs_bcn_ts +
1275 data->tsf_offset +
1276 24 * 8 * 10 / txrate->bitrate);
1277
1278 mac80211_hwsim_tx_frame(hw, skb,
1279 rcu_dereference(vif->chanctx_conf)->def.chan);
1280
1281 if (vif->csa_active && ieee80211_csa_is_complete(vif))
1282 ieee80211_csa_finish(vif);
1283 }
1284
1285 static enum hrtimer_restart
1286 mac80211_hwsim_beacon(struct hrtimer *timer)
1287 {
1288 struct mac80211_hwsim_data *data =
1289 container_of(timer, struct mac80211_hwsim_data,
1290 beacon_timer.timer);
1291 struct ieee80211_hw *hw = data->hw;
1292 u64 bcn_int = data->beacon_int;
1293 ktime_t next_bcn;
1294
1295 if (!data->started)
1296 goto out;
1297
1298 ieee80211_iterate_active_interfaces_atomic(
1299 hw, IEEE80211_IFACE_ITER_NORMAL,
1300 mac80211_hwsim_beacon_tx, data);
1301
1302 /* beacon at new TBTT + beacon interval */
1303 if (data->bcn_delta) {
1304 bcn_int -= data->bcn_delta;
1305 data->bcn_delta = 0;
1306 }
1307
1308 next_bcn = ktime_add(hrtimer_get_expires(timer),
1309 ns_to_ktime(bcn_int * 1000));
1310 tasklet_hrtimer_start(&data->beacon_timer, next_bcn, HRTIMER_MODE_ABS);
1311 out:
1312 return HRTIMER_NORESTART;
1313 }
1314
1315 static const char * const hwsim_chanwidths[] = {
1316 [NL80211_CHAN_WIDTH_20_NOHT] = "noht",
1317 [NL80211_CHAN_WIDTH_20] = "ht20",
1318 [NL80211_CHAN_WIDTH_40] = "ht40",
1319 [NL80211_CHAN_WIDTH_80] = "vht80",
1320 [NL80211_CHAN_WIDTH_80P80] = "vht80p80",
1321 [NL80211_CHAN_WIDTH_160] = "vht160",
1322 };
1323
1324 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
1325 {
1326 struct mac80211_hwsim_data *data = hw->priv;
1327 struct ieee80211_conf *conf = &hw->conf;
1328 static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
1329 [IEEE80211_SMPS_AUTOMATIC] = "auto",
1330 [IEEE80211_SMPS_OFF] = "off",
1331 [IEEE80211_SMPS_STATIC] = "static",
1332 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
1333 };
1334
1335 if (conf->chandef.chan)
1336 wiphy_debug(hw->wiphy,
1337 "%s (freq=%d(%d - %d)/%s idle=%d ps=%d smps=%s)\n",
1338 __func__,
1339 conf->chandef.chan->center_freq,
1340 conf->chandef.center_freq1,
1341 conf->chandef.center_freq2,
1342 hwsim_chanwidths[conf->chandef.width],
1343 !!(conf->flags & IEEE80211_CONF_IDLE),
1344 !!(conf->flags & IEEE80211_CONF_PS),
1345 smps_modes[conf->smps_mode]);
1346 else
1347 wiphy_debug(hw->wiphy,
1348 "%s (freq=0 idle=%d ps=%d smps=%s)\n",
1349 __func__,
1350 !!(conf->flags & IEEE80211_CONF_IDLE),
1351 !!(conf->flags & IEEE80211_CONF_PS),
1352 smps_modes[conf->smps_mode]);
1353
1354 data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
1355
1356 data->channel = conf->chandef.chan;
1357
1358 WARN_ON(data->channel && data->use_chanctx);
1359
1360 data->power_level = conf->power_level;
1361 if (!data->started || !data->beacon_int)
1362 tasklet_hrtimer_cancel(&data->beacon_timer);
1363 else if (!hrtimer_is_queued(&data->beacon_timer.timer)) {
1364 u64 tsf = mac80211_hwsim_get_tsf(hw, NULL);
1365 u32 bcn_int = data->beacon_int;
1366 u64 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1367
1368 tasklet_hrtimer_start(&data->beacon_timer,
1369 ns_to_ktime(until_tbtt * 1000),
1370 HRTIMER_MODE_REL);
1371 }
1372
1373 return 0;
1374 }
1375
1376
1377 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
1378 unsigned int changed_flags,
1379 unsigned int *total_flags,u64 multicast)
1380 {
1381 struct mac80211_hwsim_data *data = hw->priv;
1382
1383 wiphy_debug(hw->wiphy, "%s\n", __func__);
1384
1385 data->rx_filter = 0;
1386 if (*total_flags & FIF_PROMISC_IN_BSS)
1387 data->rx_filter |= FIF_PROMISC_IN_BSS;
1388 if (*total_flags & FIF_ALLMULTI)
1389 data->rx_filter |= FIF_ALLMULTI;
1390
1391 *total_flags = data->rx_filter;
1392 }
1393
1394 static void mac80211_hwsim_bcn_en_iter(void *data, u8 *mac,
1395 struct ieee80211_vif *vif)
1396 {
1397 unsigned int *count = data;
1398 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1399
1400 if (vp->bcn_en)
1401 (*count)++;
1402 }
1403
1404 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
1405 struct ieee80211_vif *vif,
1406 struct ieee80211_bss_conf *info,
1407 u32 changed)
1408 {
1409 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1410 struct mac80211_hwsim_data *data = hw->priv;
1411
1412 hwsim_check_magic(vif);
1413
1414 wiphy_debug(hw->wiphy, "%s(changed=0x%x vif->addr=%pM)\n",
1415 __func__, changed, vif->addr);
1416
1417 if (changed & BSS_CHANGED_BSSID) {
1418 wiphy_debug(hw->wiphy, "%s: BSSID changed: %pM\n",
1419 __func__, info->bssid);
1420 memcpy(vp->bssid, info->bssid, ETH_ALEN);
1421 }
1422
1423 if (changed & BSS_CHANGED_ASSOC) {
1424 wiphy_debug(hw->wiphy, " ASSOC: assoc=%d aid=%d\n",
1425 info->assoc, info->aid);
1426 vp->assoc = info->assoc;
1427 vp->aid = info->aid;
1428 }
1429
1430 if (changed & BSS_CHANGED_BEACON_INT) {
1431 wiphy_debug(hw->wiphy, " BCNINT: %d\n", info->beacon_int);
1432 data->beacon_int = info->beacon_int * 1024;
1433 }
1434
1435 if (changed & BSS_CHANGED_BEACON_ENABLED) {
1436 wiphy_debug(hw->wiphy, " BCN EN: %d\n", info->enable_beacon);
1437 vp->bcn_en = info->enable_beacon;
1438 if (data->started &&
1439 !hrtimer_is_queued(&data->beacon_timer.timer) &&
1440 info->enable_beacon) {
1441 u64 tsf, until_tbtt;
1442 u32 bcn_int;
1443 if (WARN_ON(!data->beacon_int))
1444 data->beacon_int = 1000 * 1024;
1445 tsf = mac80211_hwsim_get_tsf(hw, vif);
1446 bcn_int = data->beacon_int;
1447 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1448 tasklet_hrtimer_start(&data->beacon_timer,
1449 ns_to_ktime(until_tbtt * 1000),
1450 HRTIMER_MODE_REL);
1451 } else if (!info->enable_beacon) {
1452 unsigned int count = 0;
1453 ieee80211_iterate_active_interfaces_atomic(
1454 data->hw, IEEE80211_IFACE_ITER_NORMAL,
1455 mac80211_hwsim_bcn_en_iter, &count);
1456 wiphy_debug(hw->wiphy, " beaconing vifs remaining: %u",
1457 count);
1458 if (count == 0)
1459 tasklet_hrtimer_cancel(&data->beacon_timer);
1460 }
1461 }
1462
1463 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1464 wiphy_debug(hw->wiphy, " ERP_CTS_PROT: %d\n",
1465 info->use_cts_prot);
1466 }
1467
1468 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1469 wiphy_debug(hw->wiphy, " ERP_PREAMBLE: %d\n",
1470 info->use_short_preamble);
1471 }
1472
1473 if (changed & BSS_CHANGED_ERP_SLOT) {
1474 wiphy_debug(hw->wiphy, " ERP_SLOT: %d\n", info->use_short_slot);
1475 }
1476
1477 if (changed & BSS_CHANGED_HT) {
1478 wiphy_debug(hw->wiphy, " HT: op_mode=0x%x\n",
1479 info->ht_operation_mode);
1480 }
1481
1482 if (changed & BSS_CHANGED_BASIC_RATES) {
1483 wiphy_debug(hw->wiphy, " BASIC_RATES: 0x%llx\n",
1484 (unsigned long long) info->basic_rates);
1485 }
1486
1487 if (changed & BSS_CHANGED_TXPOWER)
1488 wiphy_debug(hw->wiphy, " TX Power: %d dBm\n", info->txpower);
1489 }
1490
1491 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
1492 struct ieee80211_vif *vif,
1493 struct ieee80211_sta *sta)
1494 {
1495 hwsim_check_magic(vif);
1496 hwsim_set_sta_magic(sta);
1497
1498 return 0;
1499 }
1500
1501 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
1502 struct ieee80211_vif *vif,
1503 struct ieee80211_sta *sta)
1504 {
1505 hwsim_check_magic(vif);
1506 hwsim_clear_sta_magic(sta);
1507
1508 return 0;
1509 }
1510
1511 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
1512 struct ieee80211_vif *vif,
1513 enum sta_notify_cmd cmd,
1514 struct ieee80211_sta *sta)
1515 {
1516 hwsim_check_magic(vif);
1517
1518 switch (cmd) {
1519 case STA_NOTIFY_SLEEP:
1520 case STA_NOTIFY_AWAKE:
1521 /* TODO: make good use of these flags */
1522 break;
1523 default:
1524 WARN(1, "Invalid sta notify: %d\n", cmd);
1525 break;
1526 }
1527 }
1528
1529 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
1530 struct ieee80211_sta *sta,
1531 bool set)
1532 {
1533 hwsim_check_sta_magic(sta);
1534 return 0;
1535 }
1536
1537 static int mac80211_hwsim_conf_tx(
1538 struct ieee80211_hw *hw,
1539 struct ieee80211_vif *vif, u16 queue,
1540 const struct ieee80211_tx_queue_params *params)
1541 {
1542 wiphy_debug(hw->wiphy,
1543 "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
1544 __func__, queue,
1545 params->txop, params->cw_min,
1546 params->cw_max, params->aifs);
1547 return 0;
1548 }
1549
1550 static int mac80211_hwsim_get_survey(
1551 struct ieee80211_hw *hw, int idx,
1552 struct survey_info *survey)
1553 {
1554 struct ieee80211_conf *conf = &hw->conf;
1555
1556 wiphy_debug(hw->wiphy, "%s (idx=%d)\n", __func__, idx);
1557
1558 if (idx != 0)
1559 return -ENOENT;
1560
1561 /* Current channel */
1562 survey->channel = conf->chandef.chan;
1563
1564 /*
1565 * Magically conjured noise level --- this is only ok for simulated hardware.
1566 *
1567 * A real driver which cannot determine the real channel noise MUST NOT
1568 * report any noise, especially not a magically conjured one :-)
1569 */
1570 survey->filled = SURVEY_INFO_NOISE_DBM;
1571 survey->noise = -92;
1572
1573 return 0;
1574 }
1575
1576 #ifdef CONFIG_NL80211_TESTMODE
1577 /*
1578 * This section contains example code for using netlink
1579 * attributes with the testmode command in nl80211.
1580 */
1581
1582 /* These enums need to be kept in sync with userspace */
1583 enum hwsim_testmode_attr {
1584 __HWSIM_TM_ATTR_INVALID = 0,
1585 HWSIM_TM_ATTR_CMD = 1,
1586 HWSIM_TM_ATTR_PS = 2,
1587
1588 /* keep last */
1589 __HWSIM_TM_ATTR_AFTER_LAST,
1590 HWSIM_TM_ATTR_MAX = __HWSIM_TM_ATTR_AFTER_LAST - 1
1591 };
1592
1593 enum hwsim_testmode_cmd {
1594 HWSIM_TM_CMD_SET_PS = 0,
1595 HWSIM_TM_CMD_GET_PS = 1,
1596 HWSIM_TM_CMD_STOP_QUEUES = 2,
1597 HWSIM_TM_CMD_WAKE_QUEUES = 3,
1598 };
1599
1600 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
1601 [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
1602 [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
1603 };
1604
1605 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
1606 struct ieee80211_vif *vif,
1607 void *data, int len)
1608 {
1609 struct mac80211_hwsim_data *hwsim = hw->priv;
1610 struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
1611 struct sk_buff *skb;
1612 int err, ps;
1613
1614 err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
1615 hwsim_testmode_policy);
1616 if (err)
1617 return err;
1618
1619 if (!tb[HWSIM_TM_ATTR_CMD])
1620 return -EINVAL;
1621
1622 switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
1623 case HWSIM_TM_CMD_SET_PS:
1624 if (!tb[HWSIM_TM_ATTR_PS])
1625 return -EINVAL;
1626 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
1627 return hwsim_fops_ps_write(hwsim, ps);
1628 case HWSIM_TM_CMD_GET_PS:
1629 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
1630 nla_total_size(sizeof(u32)));
1631 if (!skb)
1632 return -ENOMEM;
1633 if (nla_put_u32(skb, HWSIM_TM_ATTR_PS, hwsim->ps))
1634 goto nla_put_failure;
1635 return cfg80211_testmode_reply(skb);
1636 case HWSIM_TM_CMD_STOP_QUEUES:
1637 ieee80211_stop_queues(hw);
1638 return 0;
1639 case HWSIM_TM_CMD_WAKE_QUEUES:
1640 ieee80211_wake_queues(hw);
1641 return 0;
1642 default:
1643 return -EOPNOTSUPP;
1644 }
1645
1646 nla_put_failure:
1647 kfree_skb(skb);
1648 return -ENOBUFS;
1649 }
1650 #endif
1651
1652 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
1653 struct ieee80211_vif *vif,
1654 enum ieee80211_ampdu_mlme_action action,
1655 struct ieee80211_sta *sta, u16 tid, u16 *ssn,
1656 u8 buf_size)
1657 {
1658 switch (action) {
1659 case IEEE80211_AMPDU_TX_START:
1660 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1661 break;
1662 case IEEE80211_AMPDU_TX_STOP_CONT:
1663 case IEEE80211_AMPDU_TX_STOP_FLUSH:
1664 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
1665 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1666 break;
1667 case IEEE80211_AMPDU_TX_OPERATIONAL:
1668 break;
1669 case IEEE80211_AMPDU_RX_START:
1670 case IEEE80211_AMPDU_RX_STOP:
1671 break;
1672 default:
1673 return -EOPNOTSUPP;
1674 }
1675
1676 return 0;
1677 }
1678
1679 static void mac80211_hwsim_flush(struct ieee80211_hw *hw,
1680 struct ieee80211_vif *vif,
1681 u32 queues, bool drop)
1682 {
1683 /* Not implemented, queues only on kernel side */
1684 }
1685
1686 static void hw_scan_work(struct work_struct *work)
1687 {
1688 struct mac80211_hwsim_data *hwsim =
1689 container_of(work, struct mac80211_hwsim_data, hw_scan.work);
1690 struct cfg80211_scan_request *req = hwsim->hw_scan_request;
1691 int dwell, i;
1692
1693 mutex_lock(&hwsim->mutex);
1694 if (hwsim->scan_chan_idx >= req->n_channels) {
1695 wiphy_debug(hwsim->hw->wiphy, "hw scan complete\n");
1696 ieee80211_scan_completed(hwsim->hw, false);
1697 hwsim->hw_scan_request = NULL;
1698 hwsim->hw_scan_vif = NULL;
1699 hwsim->tmp_chan = NULL;
1700 mutex_unlock(&hwsim->mutex);
1701 return;
1702 }
1703
1704 wiphy_debug(hwsim->hw->wiphy, "hw scan %d MHz\n",
1705 req->channels[hwsim->scan_chan_idx]->center_freq);
1706
1707 hwsim->tmp_chan = req->channels[hwsim->scan_chan_idx];
1708 if (hwsim->tmp_chan->flags & IEEE80211_CHAN_NO_IR ||
1709 !req->n_ssids) {
1710 dwell = 120;
1711 } else {
1712 dwell = 30;
1713 /* send probes */
1714 for (i = 0; i < req->n_ssids; i++) {
1715 struct sk_buff *probe;
1716
1717 probe = ieee80211_probereq_get(hwsim->hw,
1718 hwsim->hw_scan_vif,
1719 req->ssids[i].ssid,
1720 req->ssids[i].ssid_len,
1721 req->ie_len);
1722 if (!probe)
1723 continue;
1724
1725 if (req->ie_len)
1726 memcpy(skb_put(probe, req->ie_len), req->ie,
1727 req->ie_len);
1728
1729 local_bh_disable();
1730 mac80211_hwsim_tx_frame(hwsim->hw, probe,
1731 hwsim->tmp_chan);
1732 local_bh_enable();
1733 }
1734 }
1735 ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan,
1736 msecs_to_jiffies(dwell));
1737 hwsim->scan_chan_idx++;
1738 mutex_unlock(&hwsim->mutex);
1739 }
1740
1741 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
1742 struct ieee80211_vif *vif,
1743 struct cfg80211_scan_request *req)
1744 {
1745 struct mac80211_hwsim_data *hwsim = hw->priv;
1746
1747 mutex_lock(&hwsim->mutex);
1748 if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
1749 mutex_unlock(&hwsim->mutex);
1750 return -EBUSY;
1751 }
1752 hwsim->hw_scan_request = req;
1753 hwsim->hw_scan_vif = vif;
1754 hwsim->scan_chan_idx = 0;
1755 mutex_unlock(&hwsim->mutex);
1756
1757 wiphy_debug(hw->wiphy, "hwsim hw_scan request\n");
1758
1759 ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan, 0);
1760
1761 return 0;
1762 }
1763
1764 static void mac80211_hwsim_cancel_hw_scan(struct ieee80211_hw *hw,
1765 struct ieee80211_vif *vif)
1766 {
1767 struct mac80211_hwsim_data *hwsim = hw->priv;
1768
1769 wiphy_debug(hw->wiphy, "hwsim cancel_hw_scan\n");
1770
1771 cancel_delayed_work_sync(&hwsim->hw_scan);
1772
1773 mutex_lock(&hwsim->mutex);
1774 ieee80211_scan_completed(hwsim->hw, true);
1775 hwsim->tmp_chan = NULL;
1776 hwsim->hw_scan_request = NULL;
1777 hwsim->hw_scan_vif = NULL;
1778 mutex_unlock(&hwsim->mutex);
1779 }
1780
1781 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw)
1782 {
1783 struct mac80211_hwsim_data *hwsim = hw->priv;
1784
1785 mutex_lock(&hwsim->mutex);
1786
1787 if (hwsim->scanning) {
1788 printk(KERN_DEBUG "two hwsim sw_scans detected!\n");
1789 goto out;
1790 }
1791
1792 printk(KERN_DEBUG "hwsim sw_scan request, prepping stuff\n");
1793 hwsim->scanning = true;
1794
1795 out:
1796 mutex_unlock(&hwsim->mutex);
1797 }
1798
1799 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw)
1800 {
1801 struct mac80211_hwsim_data *hwsim = hw->priv;
1802
1803 mutex_lock(&hwsim->mutex);
1804
1805 printk(KERN_DEBUG "hwsim sw_scan_complete\n");
1806 hwsim->scanning = false;
1807
1808 mutex_unlock(&hwsim->mutex);
1809 }
1810
1811 static void hw_roc_done(struct work_struct *work)
1812 {
1813 struct mac80211_hwsim_data *hwsim =
1814 container_of(work, struct mac80211_hwsim_data, roc_done.work);
1815
1816 mutex_lock(&hwsim->mutex);
1817 ieee80211_remain_on_channel_expired(hwsim->hw);
1818 hwsim->tmp_chan = NULL;
1819 mutex_unlock(&hwsim->mutex);
1820
1821 wiphy_debug(hwsim->hw->wiphy, "hwsim ROC expired\n");
1822 }
1823
1824 static int mac80211_hwsim_roc(struct ieee80211_hw *hw,
1825 struct ieee80211_vif *vif,
1826 struct ieee80211_channel *chan,
1827 int duration,
1828 enum ieee80211_roc_type type)
1829 {
1830 struct mac80211_hwsim_data *hwsim = hw->priv;
1831
1832 mutex_lock(&hwsim->mutex);
1833 if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
1834 mutex_unlock(&hwsim->mutex);
1835 return -EBUSY;
1836 }
1837
1838 hwsim->tmp_chan = chan;
1839 mutex_unlock(&hwsim->mutex);
1840
1841 wiphy_debug(hw->wiphy, "hwsim ROC (%d MHz, %d ms)\n",
1842 chan->center_freq, duration);
1843
1844 ieee80211_ready_on_channel(hw);
1845
1846 ieee80211_queue_delayed_work(hw, &hwsim->roc_done,
1847 msecs_to_jiffies(duration));
1848 return 0;
1849 }
1850
1851 static int mac80211_hwsim_croc(struct ieee80211_hw *hw)
1852 {
1853 struct mac80211_hwsim_data *hwsim = hw->priv;
1854
1855 cancel_delayed_work_sync(&hwsim->roc_done);
1856
1857 mutex_lock(&hwsim->mutex);
1858 hwsim->tmp_chan = NULL;
1859 mutex_unlock(&hwsim->mutex);
1860
1861 wiphy_debug(hw->wiphy, "hwsim ROC canceled\n");
1862
1863 return 0;
1864 }
1865
1866 static int mac80211_hwsim_add_chanctx(struct ieee80211_hw *hw,
1867 struct ieee80211_chanctx_conf *ctx)
1868 {
1869 hwsim_set_chanctx_magic(ctx);
1870 wiphy_debug(hw->wiphy,
1871 "add channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
1872 ctx->def.chan->center_freq, ctx->def.width,
1873 ctx->def.center_freq1, ctx->def.center_freq2);
1874 return 0;
1875 }
1876
1877 static void mac80211_hwsim_remove_chanctx(struct ieee80211_hw *hw,
1878 struct ieee80211_chanctx_conf *ctx)
1879 {
1880 wiphy_debug(hw->wiphy,
1881 "remove channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
1882 ctx->def.chan->center_freq, ctx->def.width,
1883 ctx->def.center_freq1, ctx->def.center_freq2);
1884 hwsim_check_chanctx_magic(ctx);
1885 hwsim_clear_chanctx_magic(ctx);
1886 }
1887
1888 static void mac80211_hwsim_change_chanctx(struct ieee80211_hw *hw,
1889 struct ieee80211_chanctx_conf *ctx,
1890 u32 changed)
1891 {
1892 hwsim_check_chanctx_magic(ctx);
1893 wiphy_debug(hw->wiphy,
1894 "change channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
1895 ctx->def.chan->center_freq, ctx->def.width,
1896 ctx->def.center_freq1, ctx->def.center_freq2);
1897 }
1898
1899 static int mac80211_hwsim_assign_vif_chanctx(struct ieee80211_hw *hw,
1900 struct ieee80211_vif *vif,
1901 struct ieee80211_chanctx_conf *ctx)
1902 {
1903 hwsim_check_magic(vif);
1904 hwsim_check_chanctx_magic(ctx);
1905
1906 return 0;
1907 }
1908
1909 static void mac80211_hwsim_unassign_vif_chanctx(struct ieee80211_hw *hw,
1910 struct ieee80211_vif *vif,
1911 struct ieee80211_chanctx_conf *ctx)
1912 {
1913 hwsim_check_magic(vif);
1914 hwsim_check_chanctx_magic(ctx);
1915 }
1916
1917 static const struct ieee80211_ops mac80211_hwsim_ops = {
1918 .tx = mac80211_hwsim_tx,
1919 .start = mac80211_hwsim_start,
1920 .stop = mac80211_hwsim_stop,
1921 .add_interface = mac80211_hwsim_add_interface,
1922 .change_interface = mac80211_hwsim_change_interface,
1923 .remove_interface = mac80211_hwsim_remove_interface,
1924 .config = mac80211_hwsim_config,
1925 .configure_filter = mac80211_hwsim_configure_filter,
1926 .bss_info_changed = mac80211_hwsim_bss_info_changed,
1927 .sta_add = mac80211_hwsim_sta_add,
1928 .sta_remove = mac80211_hwsim_sta_remove,
1929 .sta_notify = mac80211_hwsim_sta_notify,
1930 .set_tim = mac80211_hwsim_set_tim,
1931 .conf_tx = mac80211_hwsim_conf_tx,
1932 .get_survey = mac80211_hwsim_get_survey,
1933 CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)
1934 .ampdu_action = mac80211_hwsim_ampdu_action,
1935 .sw_scan_start = mac80211_hwsim_sw_scan,
1936 .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
1937 .flush = mac80211_hwsim_flush,
1938 .get_tsf = mac80211_hwsim_get_tsf,
1939 .set_tsf = mac80211_hwsim_set_tsf,
1940 };
1941
1942 static struct ieee80211_ops mac80211_hwsim_mchan_ops;
1943
1944 static int mac80211_hwsim_create_radio(int channels, const char *reg_alpha2,
1945 const struct ieee80211_regdomain *regd,
1946 bool reg_strict, bool p2p_device,
1947 bool use_chanctx)
1948 {
1949 int err;
1950 u8 addr[ETH_ALEN];
1951 struct mac80211_hwsim_data *data;
1952 struct ieee80211_hw *hw;
1953 enum ieee80211_band band;
1954 const struct ieee80211_ops *ops = &mac80211_hwsim_ops;
1955 int idx;
1956
1957 if (WARN_ON(channels > 1 && !use_chanctx))
1958 return -EINVAL;
1959
1960 spin_lock_bh(&hwsim_radio_lock);
1961 idx = hwsim_radio_idx++;
1962 spin_unlock_bh(&hwsim_radio_lock);
1963
1964 if (use_chanctx)
1965 ops = &mac80211_hwsim_mchan_ops;
1966 hw = ieee80211_alloc_hw(sizeof(*data), ops);
1967 if (!hw) {
1968 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw failed\n");
1969 err = -ENOMEM;
1970 goto failed;
1971 }
1972 data = hw->priv;
1973 data->hw = hw;
1974
1975 data->dev = device_create(hwsim_class, NULL, 0, hw, "hwsim%d", idx);
1976 if (IS_ERR(data->dev)) {
1977 printk(KERN_DEBUG
1978 "mac80211_hwsim: device_create failed (%ld)\n",
1979 PTR_ERR(data->dev));
1980 err = -ENOMEM;
1981 goto failed_drvdata;
1982 }
1983 data->dev->driver = &mac80211_hwsim_driver.driver;
1984 err = device_bind_driver(data->dev);
1985 if (err != 0) {
1986 printk(KERN_DEBUG "mac80211_hwsim: device_bind_driver failed (%d)\n",
1987 err);
1988 goto failed_hw;
1989 }
1990
1991 skb_queue_head_init(&data->pending);
1992
1993 SET_IEEE80211_DEV(hw, data->dev);
1994 memset(addr, 0, ETH_ALEN);
1995 addr[0] = 0x02;
1996 addr[3] = idx >> 8;
1997 addr[4] = idx;
1998 memcpy(data->addresses[0].addr, addr, ETH_ALEN);
1999 memcpy(data->addresses[1].addr, addr, ETH_ALEN);
2000 data->addresses[1].addr[0] |= 0x40;
2001 hw->wiphy->n_addresses = 2;
2002 hw->wiphy->addresses = data->addresses;
2003
2004 data->channels = channels;
2005 data->use_chanctx = use_chanctx;
2006 data->idx = idx;
2007
2008 if (data->use_chanctx) {
2009 hw->wiphy->max_scan_ssids = 255;
2010 hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
2011 hw->wiphy->max_remain_on_channel_duration = 1000;
2012 /* For channels > 1 DFS is not allowed */
2013 hw->wiphy->n_iface_combinations = 1;
2014 hw->wiphy->iface_combinations = &data->if_combination;
2015 if (p2p_device)
2016 data->if_combination = hwsim_if_comb_p2p_dev[0];
2017 else
2018 data->if_combination = hwsim_if_comb[0];
2019 data->if_combination.num_different_channels = data->channels;
2020 } else if (p2p_device) {
2021 hw->wiphy->iface_combinations = hwsim_if_comb_p2p_dev;
2022 hw->wiphy->n_iface_combinations =
2023 ARRAY_SIZE(hwsim_if_comb_p2p_dev);
2024 } else {
2025 hw->wiphy->iface_combinations = hwsim_if_comb;
2026 hw->wiphy->n_iface_combinations = ARRAY_SIZE(hwsim_if_comb);
2027 }
2028
2029 INIT_DELAYED_WORK(&data->roc_done, hw_roc_done);
2030 INIT_DELAYED_WORK(&data->hw_scan, hw_scan_work);
2031
2032 hw->queues = 5;
2033 hw->offchannel_tx_hw_queue = 4;
2034 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
2035 BIT(NL80211_IFTYPE_AP) |
2036 BIT(NL80211_IFTYPE_P2P_CLIENT) |
2037 BIT(NL80211_IFTYPE_P2P_GO) |
2038 BIT(NL80211_IFTYPE_ADHOC) |
2039 BIT(NL80211_IFTYPE_MESH_POINT);
2040
2041 if (p2p_device)
2042 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_P2P_DEVICE);
2043
2044 hw->flags = IEEE80211_HW_MFP_CAPABLE |
2045 IEEE80211_HW_SIGNAL_DBM |
2046 IEEE80211_HW_SUPPORTS_STATIC_SMPS |
2047 IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
2048 IEEE80211_HW_AMPDU_AGGREGATION |
2049 IEEE80211_HW_WANT_MONITOR_VIF |
2050 IEEE80211_HW_QUEUE_CONTROL |
2051 IEEE80211_HW_SUPPORTS_HT_CCK_RATES |
2052 IEEE80211_HW_CHANCTX_STA_CSA;
2053 if (rctbl)
2054 hw->flags |= IEEE80211_HW_SUPPORTS_RC_TABLE;
2055
2056 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS |
2057 WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL |
2058 WIPHY_FLAG_AP_UAPSD |
2059 WIPHY_FLAG_HAS_CHANNEL_SWITCH;
2060 hw->wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR;
2061 hw->wiphy->features |= NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE;
2062
2063 /* ask mac80211 to reserve space for magic */
2064 hw->vif_data_size = sizeof(struct hwsim_vif_priv);
2065 hw->sta_data_size = sizeof(struct hwsim_sta_priv);
2066 hw->chanctx_data_size = sizeof(struct hwsim_chanctx_priv);
2067
2068 memcpy(data->channels_2ghz, hwsim_channels_2ghz,
2069 sizeof(hwsim_channels_2ghz));
2070 memcpy(data->channels_5ghz, hwsim_channels_5ghz,
2071 sizeof(hwsim_channels_5ghz));
2072 memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
2073
2074 for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) {
2075 struct ieee80211_supported_band *sband = &data->bands[band];
2076 switch (band) {
2077 case IEEE80211_BAND_2GHZ:
2078 sband->channels = data->channels_2ghz;
2079 sband->n_channels = ARRAY_SIZE(hwsim_channels_2ghz);
2080 sband->bitrates = data->rates;
2081 sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
2082 break;
2083 case IEEE80211_BAND_5GHZ:
2084 sband->channels = data->channels_5ghz;
2085 sband->n_channels = ARRAY_SIZE(hwsim_channels_5ghz);
2086 sband->bitrates = data->rates + 4;
2087 sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
2088 break;
2089 default:
2090 continue;
2091 }
2092
2093 sband->ht_cap.ht_supported = true;
2094 sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
2095 IEEE80211_HT_CAP_GRN_FLD |
2096 IEEE80211_HT_CAP_SGI_40 |
2097 IEEE80211_HT_CAP_DSSSCCK40;
2098 sband->ht_cap.ampdu_factor = 0x3;
2099 sband->ht_cap.ampdu_density = 0x6;
2100 memset(&sband->ht_cap.mcs, 0,
2101 sizeof(sband->ht_cap.mcs));
2102 sband->ht_cap.mcs.rx_mask[0] = 0xff;
2103 sband->ht_cap.mcs.rx_mask[1] = 0xff;
2104 sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2105
2106 hw->wiphy->bands[band] = sband;
2107
2108 sband->vht_cap.vht_supported = true;
2109 sband->vht_cap.cap =
2110 IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 |
2111 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ |
2112 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ |
2113 IEEE80211_VHT_CAP_RXLDPC |
2114 IEEE80211_VHT_CAP_SHORT_GI_80 |
2115 IEEE80211_VHT_CAP_SHORT_GI_160 |
2116 IEEE80211_VHT_CAP_TXSTBC |
2117 IEEE80211_VHT_CAP_RXSTBC_1 |
2118 IEEE80211_VHT_CAP_RXSTBC_2 |
2119 IEEE80211_VHT_CAP_RXSTBC_3 |
2120 IEEE80211_VHT_CAP_RXSTBC_4 |
2121 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
2122 sband->vht_cap.vht_mcs.rx_mcs_map =
2123 cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_8 << 0 |
2124 IEEE80211_VHT_MCS_SUPPORT_0_8 << 2 |
2125 IEEE80211_VHT_MCS_SUPPORT_0_9 << 4 |
2126 IEEE80211_VHT_MCS_SUPPORT_0_8 << 6 |
2127 IEEE80211_VHT_MCS_SUPPORT_0_8 << 8 |
2128 IEEE80211_VHT_MCS_SUPPORT_0_9 << 10 |
2129 IEEE80211_VHT_MCS_SUPPORT_0_9 << 12 |
2130 IEEE80211_VHT_MCS_SUPPORT_0_8 << 14);
2131 sband->vht_cap.vht_mcs.tx_mcs_map =
2132 sband->vht_cap.vht_mcs.rx_mcs_map;
2133 }
2134
2135 /* By default all radios belong to the first group */
2136 data->group = 1;
2137 mutex_init(&data->mutex);
2138
2139 /* Enable frame retransmissions for lossy channels */
2140 hw->max_rates = 4;
2141 hw->max_rate_tries = 11;
2142
2143 if (reg_strict)
2144 hw->wiphy->regulatory_flags |= REGULATORY_STRICT_REG;
2145 if (regd) {
2146 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG;
2147 wiphy_apply_custom_regulatory(hw->wiphy, regd);
2148 /* give the regulatory workqueue a chance to run */
2149 schedule_timeout_interruptible(1);
2150 }
2151
2152 err = ieee80211_register_hw(hw);
2153 if (err < 0) {
2154 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_register_hw failed (%d)\n",
2155 err);
2156 goto failed_hw;
2157 }
2158
2159 wiphy_debug(hw->wiphy, "hwaddr %pM registered\n", hw->wiphy->perm_addr);
2160
2161 if (reg_alpha2)
2162 regulatory_hint(hw->wiphy, reg_alpha2);
2163
2164 data->debugfs = debugfs_create_dir("hwsim", hw->wiphy->debugfsdir);
2165 debugfs_create_file("ps", 0666, data->debugfs, data, &hwsim_fops_ps);
2166 debugfs_create_file("group", 0666, data->debugfs, data,
2167 &hwsim_fops_group);
2168 if (!data->use_chanctx)
2169 debugfs_create_file("dfs_simulate_radar", 0222,
2170 data->debugfs,
2171 data, &hwsim_simulate_radar);
2172
2173 tasklet_hrtimer_init(&data->beacon_timer,
2174 mac80211_hwsim_beacon,
2175 CLOCK_MONOTONIC_RAW, HRTIMER_MODE_ABS);
2176
2177 spin_lock_bh(&hwsim_radio_lock);
2178 list_add_tail(&data->list, &hwsim_radios);
2179 spin_unlock_bh(&hwsim_radio_lock);
2180
2181 return idx;
2182
2183 failed_hw:
2184 device_unregister(data->dev);
2185 failed_drvdata:
2186 ieee80211_free_hw(hw);
2187 failed:
2188 return err;
2189 }
2190
2191 static void mac80211_hwsim_destroy_radio(struct mac80211_hwsim_data *data)
2192 {
2193 debugfs_remove_recursive(data->debugfs);
2194 ieee80211_unregister_hw(data->hw);
2195 device_release_driver(data->dev);
2196 device_unregister(data->dev);
2197 ieee80211_free_hw(data->hw);
2198 }
2199
2200 static void mac80211_hwsim_free(void)
2201 {
2202 struct mac80211_hwsim_data *data;
2203
2204 spin_lock_bh(&hwsim_radio_lock);
2205 while ((data = list_first_entry_or_null(&hwsim_radios,
2206 struct mac80211_hwsim_data,
2207 list))) {
2208 list_del(&data->list);
2209 spin_unlock_bh(&hwsim_radio_lock);
2210 mac80211_hwsim_destroy_radio(data);
2211 spin_lock_bh(&hwsim_radio_lock);
2212 }
2213 spin_unlock_bh(&hwsim_radio_lock);
2214 class_destroy(hwsim_class);
2215 }
2216
2217 static const struct net_device_ops hwsim_netdev_ops = {
2218 .ndo_start_xmit = hwsim_mon_xmit,
2219 .ndo_change_mtu = eth_change_mtu,
2220 .ndo_set_mac_address = eth_mac_addr,
2221 .ndo_validate_addr = eth_validate_addr,
2222 };
2223
2224 static void hwsim_mon_setup(struct net_device *dev)
2225 {
2226 dev->netdev_ops = &hwsim_netdev_ops;
2227 dev->destructor = free_netdev;
2228 ether_setup(dev);
2229 dev->tx_queue_len = 0;
2230 dev->type = ARPHRD_IEEE80211_RADIOTAP;
2231 memset(dev->dev_addr, 0, ETH_ALEN);
2232 dev->dev_addr[0] = 0x12;
2233 }
2234
2235 static struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(const u8 *addr)
2236 {
2237 struct mac80211_hwsim_data *data;
2238 bool _found = false;
2239
2240 spin_lock_bh(&hwsim_radio_lock);
2241 list_for_each_entry(data, &hwsim_radios, list) {
2242 if (memcmp(data->addresses[1].addr, addr, ETH_ALEN) == 0) {
2243 _found = true;
2244 break;
2245 }
2246 }
2247 spin_unlock_bh(&hwsim_radio_lock);
2248
2249 if (!_found)
2250 return NULL;
2251
2252 return data;
2253 }
2254
2255 static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
2256 struct genl_info *info)
2257 {
2258
2259 struct ieee80211_hdr *hdr;
2260 struct mac80211_hwsim_data *data2;
2261 struct ieee80211_tx_info *txi;
2262 struct hwsim_tx_rate *tx_attempts;
2263 unsigned long ret_skb_ptr;
2264 struct sk_buff *skb, *tmp;
2265 const u8 *src;
2266 unsigned int hwsim_flags;
2267 int i;
2268 bool found = false;
2269
2270 if (info->snd_portid != wmediumd_portid)
2271 return -EINVAL;
2272
2273 if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
2274 !info->attrs[HWSIM_ATTR_FLAGS] ||
2275 !info->attrs[HWSIM_ATTR_COOKIE] ||
2276 !info->attrs[HWSIM_ATTR_TX_INFO])
2277 goto out;
2278
2279 src = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
2280 hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
2281 ret_skb_ptr = nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
2282
2283 data2 = get_hwsim_data_ref_from_addr(src);
2284 if (!data2)
2285 goto out;
2286
2287 /* look for the skb matching the cookie passed back from user */
2288 skb_queue_walk_safe(&data2->pending, skb, tmp) {
2289 if ((unsigned long)skb == ret_skb_ptr) {
2290 skb_unlink(skb, &data2->pending);
2291 found = true;
2292 break;
2293 }
2294 }
2295
2296 /* not found */
2297 if (!found)
2298 goto out;
2299
2300 /* Tx info received because the frame was broadcasted on user space,
2301 so we get all the necessary info: tx attempts and skb control buff */
2302
2303 tx_attempts = (struct hwsim_tx_rate *)nla_data(
2304 info->attrs[HWSIM_ATTR_TX_INFO]);
2305
2306 /* now send back TX status */
2307 txi = IEEE80211_SKB_CB(skb);
2308
2309 ieee80211_tx_info_clear_status(txi);
2310
2311 for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
2312 txi->status.rates[i].idx = tx_attempts[i].idx;
2313 txi->status.rates[i].count = tx_attempts[i].count;
2314 /*txi->status.rates[i].flags = 0;*/
2315 }
2316
2317 txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
2318
2319 if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
2320 (hwsim_flags & HWSIM_TX_STAT_ACK)) {
2321 if (skb->len >= 16) {
2322 hdr = (struct ieee80211_hdr *) skb->data;
2323 mac80211_hwsim_monitor_ack(data2->channel,
2324 hdr->addr2);
2325 }
2326 txi->flags |= IEEE80211_TX_STAT_ACK;
2327 }
2328 ieee80211_tx_status_irqsafe(data2->hw, skb);
2329 return 0;
2330 out:
2331 return -EINVAL;
2332
2333 }
2334
2335 static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
2336 struct genl_info *info)
2337 {
2338
2339 struct mac80211_hwsim_data *data2;
2340 struct ieee80211_rx_status rx_status;
2341 const u8 *dst;
2342 int frame_data_len;
2343 void *frame_data;
2344 struct sk_buff *skb = NULL;
2345
2346 if (info->snd_portid != wmediumd_portid)
2347 return -EINVAL;
2348
2349 if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
2350 !info->attrs[HWSIM_ATTR_FRAME] ||
2351 !info->attrs[HWSIM_ATTR_RX_RATE] ||
2352 !info->attrs[HWSIM_ATTR_SIGNAL])
2353 goto out;
2354
2355 dst = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
2356 frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
2357 frame_data = (void *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
2358
2359 /* Allocate new skb here */
2360 skb = alloc_skb(frame_data_len, GFP_KERNEL);
2361 if (skb == NULL)
2362 goto err;
2363
2364 if (frame_data_len > IEEE80211_MAX_DATA_LEN)
2365 goto err;
2366
2367 /* Copy the data */
2368 memcpy(skb_put(skb, frame_data_len), frame_data, frame_data_len);
2369
2370 data2 = get_hwsim_data_ref_from_addr(dst);
2371 if (!data2)
2372 goto out;
2373
2374 /* check if radio is configured properly */
2375
2376 if (data2->idle || !data2->started)
2377 goto out;
2378
2379 /* A frame is received from user space */
2380 memset(&rx_status, 0, sizeof(rx_status));
2381 rx_status.freq = data2->channel->center_freq;
2382 rx_status.band = data2->channel->band;
2383 rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
2384 rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
2385
2386 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
2387 ieee80211_rx_irqsafe(data2->hw, skb);
2388
2389 return 0;
2390 err:
2391 printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
2392 goto out;
2393 out:
2394 dev_kfree_skb(skb);
2395 return -EINVAL;
2396 }
2397
2398 static int hwsim_register_received_nl(struct sk_buff *skb_2,
2399 struct genl_info *info)
2400 {
2401 struct mac80211_hwsim_data *data;
2402 int chans = 1;
2403
2404 spin_lock_bh(&hwsim_radio_lock);
2405 list_for_each_entry(data, &hwsim_radios, list)
2406 chans = max(chans, data->channels);
2407 spin_unlock_bh(&hwsim_radio_lock);
2408
2409 /* In the future we should revise the userspace API and allow it
2410 * to set a flag that it does support multi-channel, then we can
2411 * let this pass conditionally on the flag.
2412 * For current userspace, prohibit it since it won't work right.
2413 */
2414 if (chans > 1)
2415 return -EOPNOTSUPP;
2416
2417 if (wmediumd_portid)
2418 return -EBUSY;
2419
2420 wmediumd_portid = info->snd_portid;
2421
2422 printk(KERN_DEBUG "mac80211_hwsim: received a REGISTER, "
2423 "switching to wmediumd mode with pid %d\n", info->snd_portid);
2424
2425 return 0;
2426 }
2427
2428 static int hwsim_create_radio_nl(struct sk_buff *msg, struct genl_info *info)
2429 {
2430 unsigned int chans = channels;
2431 const char *alpha2 = NULL;
2432 const struct ieee80211_regdomain *regd = NULL;
2433 bool reg_strict = info->attrs[HWSIM_ATTR_REG_STRICT_REG];
2434 bool p2p_device = info->attrs[HWSIM_ATTR_SUPPORT_P2P_DEVICE];
2435 bool use_chanctx;
2436
2437 if (info->attrs[HWSIM_ATTR_CHANNELS])
2438 chans = nla_get_u32(info->attrs[HWSIM_ATTR_CHANNELS]);
2439
2440 if (info->attrs[HWSIM_ATTR_USE_CHANCTX])
2441 use_chanctx = true;
2442 else
2443 use_chanctx = (chans > 1);
2444
2445 if (info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2])
2446 alpha2 = nla_data(info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2]);
2447
2448 if (info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]) {
2449 u32 idx = nla_get_u32(info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]);
2450
2451 if (idx >= ARRAY_SIZE(hwsim_world_regdom_custom))
2452 return -EINVAL;
2453 regd = hwsim_world_regdom_custom[idx];
2454 }
2455
2456 return mac80211_hwsim_create_radio(chans, alpha2, regd, reg_strict,
2457 p2p_device, use_chanctx);
2458 }
2459
2460 static int hwsim_destroy_radio_nl(struct sk_buff *msg, struct genl_info *info)
2461 {
2462 struct mac80211_hwsim_data *data;
2463 int idx;
2464
2465 if (!info->attrs[HWSIM_ATTR_RADIO_ID])
2466 return -EINVAL;
2467 idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
2468
2469 spin_lock_bh(&hwsim_radio_lock);
2470 list_for_each_entry(data, &hwsim_radios, list) {
2471 if (data->idx != idx)
2472 continue;
2473 list_del(&data->list);
2474 spin_unlock_bh(&hwsim_radio_lock);
2475 mac80211_hwsim_destroy_radio(data);
2476 return 0;
2477 }
2478 spin_unlock_bh(&hwsim_radio_lock);
2479
2480 return -ENODEV;
2481 }
2482
2483 /* Generic Netlink operations array */
2484 static const struct genl_ops hwsim_ops[] = {
2485 {
2486 .cmd = HWSIM_CMD_REGISTER,
2487 .policy = hwsim_genl_policy,
2488 .doit = hwsim_register_received_nl,
2489 .flags = GENL_ADMIN_PERM,
2490 },
2491 {
2492 .cmd = HWSIM_CMD_FRAME,
2493 .policy = hwsim_genl_policy,
2494 .doit = hwsim_cloned_frame_received_nl,
2495 },
2496 {
2497 .cmd = HWSIM_CMD_TX_INFO_FRAME,
2498 .policy = hwsim_genl_policy,
2499 .doit = hwsim_tx_info_frame_received_nl,
2500 },
2501 {
2502 .cmd = HWSIM_CMD_CREATE_RADIO,
2503 .policy = hwsim_genl_policy,
2504 .doit = hwsim_create_radio_nl,
2505 .flags = GENL_ADMIN_PERM,
2506 },
2507 {
2508 .cmd = HWSIM_CMD_DESTROY_RADIO,
2509 .policy = hwsim_genl_policy,
2510 .doit = hwsim_destroy_radio_nl,
2511 .flags = GENL_ADMIN_PERM,
2512 },
2513 };
2514
2515 static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
2516 unsigned long state,
2517 void *_notify)
2518 {
2519 struct netlink_notify *notify = _notify;
2520
2521 if (state != NETLINK_URELEASE)
2522 return NOTIFY_DONE;
2523
2524 if (notify->portid == wmediumd_portid) {
2525 printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
2526 " socket, switching to perfect channel medium\n");
2527 wmediumd_portid = 0;
2528 }
2529 return NOTIFY_DONE;
2530
2531 }
2532
2533 static struct notifier_block hwsim_netlink_notifier = {
2534 .notifier_call = mac80211_hwsim_netlink_notify,
2535 };
2536
2537 static int hwsim_init_netlink(void)
2538 {
2539 int rc;
2540
2541 printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
2542
2543 rc = genl_register_family_with_ops(&hwsim_genl_family, hwsim_ops);
2544 if (rc)
2545 goto failure;
2546
2547 rc = netlink_register_notifier(&hwsim_netlink_notifier);
2548 if (rc)
2549 goto failure;
2550
2551 return 0;
2552
2553 failure:
2554 printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
2555 return -EINVAL;
2556 }
2557
2558 static void hwsim_exit_netlink(void)
2559 {
2560 /* unregister the notifier */
2561 netlink_unregister_notifier(&hwsim_netlink_notifier);
2562 /* unregister the family */
2563 genl_unregister_family(&hwsim_genl_family);
2564 }
2565
2566 static int __init init_mac80211_hwsim(void)
2567 {
2568 int i, err;
2569
2570 if (radios < 0 || radios > 100)
2571 return -EINVAL;
2572
2573 if (channels < 1)
2574 return -EINVAL;
2575
2576 mac80211_hwsim_mchan_ops = mac80211_hwsim_ops;
2577 mac80211_hwsim_mchan_ops.hw_scan = mac80211_hwsim_hw_scan;
2578 mac80211_hwsim_mchan_ops.cancel_hw_scan = mac80211_hwsim_cancel_hw_scan;
2579 mac80211_hwsim_mchan_ops.sw_scan_start = NULL;
2580 mac80211_hwsim_mchan_ops.sw_scan_complete = NULL;
2581 mac80211_hwsim_mchan_ops.remain_on_channel = mac80211_hwsim_roc;
2582 mac80211_hwsim_mchan_ops.cancel_remain_on_channel = mac80211_hwsim_croc;
2583 mac80211_hwsim_mchan_ops.add_chanctx = mac80211_hwsim_add_chanctx;
2584 mac80211_hwsim_mchan_ops.remove_chanctx = mac80211_hwsim_remove_chanctx;
2585 mac80211_hwsim_mchan_ops.change_chanctx = mac80211_hwsim_change_chanctx;
2586 mac80211_hwsim_mchan_ops.assign_vif_chanctx =
2587 mac80211_hwsim_assign_vif_chanctx;
2588 mac80211_hwsim_mchan_ops.unassign_vif_chanctx =
2589 mac80211_hwsim_unassign_vif_chanctx;
2590
2591 spin_lock_init(&hwsim_radio_lock);
2592 INIT_LIST_HEAD(&hwsim_radios);
2593
2594 err = platform_driver_register(&mac80211_hwsim_driver);
2595 if (err)
2596 return err;
2597
2598 hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
2599 if (IS_ERR(hwsim_class)) {
2600 err = PTR_ERR(hwsim_class);
2601 goto out_unregister_driver;
2602 }
2603
2604 for (i = 0; i < radios; i++) {
2605 const char *reg_alpha2 = NULL;
2606 const struct ieee80211_regdomain *regd = NULL;
2607 bool reg_strict = false;
2608
2609 switch (regtest) {
2610 case HWSIM_REGTEST_DIFF_COUNTRY:
2611 if (i < ARRAY_SIZE(hwsim_alpha2s))
2612 reg_alpha2 = hwsim_alpha2s[i];
2613 break;
2614 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
2615 if (!i)
2616 reg_alpha2 = hwsim_alpha2s[0];
2617 break;
2618 case HWSIM_REGTEST_STRICT_ALL:
2619 reg_strict = true;
2620 case HWSIM_REGTEST_DRIVER_REG_ALL:
2621 reg_alpha2 = hwsim_alpha2s[0];
2622 break;
2623 case HWSIM_REGTEST_WORLD_ROAM:
2624 if (i == 0)
2625 regd = &hwsim_world_regdom_custom_01;
2626 break;
2627 case HWSIM_REGTEST_CUSTOM_WORLD:
2628 regd = &hwsim_world_regdom_custom_01;
2629 break;
2630 case HWSIM_REGTEST_CUSTOM_WORLD_2:
2631 if (i == 0)
2632 regd = &hwsim_world_regdom_custom_01;
2633 else if (i == 1)
2634 regd = &hwsim_world_regdom_custom_02;
2635 break;
2636 case HWSIM_REGTEST_STRICT_FOLLOW:
2637 if (i == 0) {
2638 reg_strict = true;
2639 reg_alpha2 = hwsim_alpha2s[0];
2640 }
2641 break;
2642 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
2643 if (i == 0) {
2644 reg_strict = true;
2645 reg_alpha2 = hwsim_alpha2s[0];
2646 } else if (i == 1) {
2647 reg_alpha2 = hwsim_alpha2s[1];
2648 }
2649 break;
2650 case HWSIM_REGTEST_ALL:
2651 switch (i) {
2652 case 0:
2653 regd = &hwsim_world_regdom_custom_01;
2654 break;
2655 case 1:
2656 regd = &hwsim_world_regdom_custom_02;
2657 break;
2658 case 2:
2659 reg_alpha2 = hwsim_alpha2s[0];
2660 break;
2661 case 3:
2662 reg_alpha2 = hwsim_alpha2s[1];
2663 break;
2664 case 4:
2665 reg_strict = true;
2666 reg_alpha2 = hwsim_alpha2s[2];
2667 break;
2668 }
2669 break;
2670 default:
2671 break;
2672 }
2673
2674 err = mac80211_hwsim_create_radio(channels, reg_alpha2,
2675 regd, reg_strict,
2676 support_p2p_device,
2677 channels > 1);
2678 if (err < 0)
2679 goto out_free_radios;
2680 }
2681
2682 hwsim_mon = alloc_netdev(0, "hwsim%d", hwsim_mon_setup);
2683 if (hwsim_mon == NULL) {
2684 err = -ENOMEM;
2685 goto out_free_radios;
2686 }
2687
2688 rtnl_lock();
2689 err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
2690 if (err < 0) {
2691 rtnl_unlock();
2692 goto out_free_radios;
2693 }
2694
2695 err = register_netdevice(hwsim_mon);
2696 if (err < 0) {
2697 rtnl_unlock();
2698 goto out_free_mon;
2699 }
2700 rtnl_unlock();
2701
2702 err = hwsim_init_netlink();
2703 if (err < 0)
2704 goto out_free_mon;
2705
2706 return 0;
2707
2708 out_free_mon:
2709 free_netdev(hwsim_mon);
2710 out_free_radios:
2711 mac80211_hwsim_free();
2712 out_unregister_driver:
2713 platform_driver_unregister(&mac80211_hwsim_driver);
2714 return err;
2715 }
2716 module_init(init_mac80211_hwsim);
2717
2718 static void __exit exit_mac80211_hwsim(void)
2719 {
2720 printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
2721
2722 hwsim_exit_netlink();
2723
2724 mac80211_hwsim_free();
2725 unregister_netdev(hwsim_mon);
2726 platform_driver_unregister(&mac80211_hwsim_driver);
2727 }
2728 module_exit(exit_mac80211_hwsim);
Linux kernel - Deliverables
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