?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
Linux 3.18.86
[linux/fpc-iii.git] / drivers / net / wireless / mac80211_hwsim.c
blobc30cd5daaacf68bc7acb1a35eba874966f3e1f5c
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 u64 delta = abs64(tsf - now);
689
690 /* adjust after beaconing with new timestamp at old TBTT */
691 if (tsf > now) {
692 data->tsf_offset += delta;
693 data->bcn_delta = do_div(delta, bcn_int);
694 } else {
695 data->tsf_offset -= delta;
696 data->bcn_delta = -do_div(delta, bcn_int);
697 }
698 }
699
700 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
701 struct sk_buff *tx_skb,
702 struct ieee80211_channel *chan)
703 {
704 struct mac80211_hwsim_data *data = hw->priv;
705 struct sk_buff *skb;
706 struct hwsim_radiotap_hdr *hdr;
707 u16 flags;
708 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
709 struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
710
711 if (!netif_running(hwsim_mon))
712 return;
713
714 skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
715 if (skb == NULL)
716 return;
717
718 hdr = (struct hwsim_radiotap_hdr *) skb_push(skb, sizeof(*hdr));
719 hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
720 hdr->hdr.it_pad = 0;
721 hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
722 hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
723 (1 << IEEE80211_RADIOTAP_RATE) |
724 (1 << IEEE80211_RADIOTAP_TSFT) |
725 (1 << IEEE80211_RADIOTAP_CHANNEL));
726 hdr->rt_tsft = __mac80211_hwsim_get_tsf(data);
727 hdr->rt_flags = 0;
728 hdr->rt_rate = txrate->bitrate / 5;
729 hdr->rt_channel = cpu_to_le16(chan->center_freq);
730 flags = IEEE80211_CHAN_2GHZ;
731 if (txrate->flags & IEEE80211_RATE_ERP_G)
732 flags |= IEEE80211_CHAN_OFDM;
733 else
734 flags |= IEEE80211_CHAN_CCK;
735 hdr->rt_chbitmask = cpu_to_le16(flags);
736
737 skb->dev = hwsim_mon;
738 skb_set_mac_header(skb, 0);
739 skb->ip_summed = CHECKSUM_UNNECESSARY;
740 skb->pkt_type = PACKET_OTHERHOST;
741 skb->protocol = htons(ETH_P_802_2);
742 memset(skb->cb, 0, sizeof(skb->cb));
743 netif_rx(skb);
744 }
745
746
747 static void mac80211_hwsim_monitor_ack(struct ieee80211_channel *chan,
748 const u8 *addr)
749 {
750 struct sk_buff *skb;
751 struct hwsim_radiotap_ack_hdr *hdr;
752 u16 flags;
753 struct ieee80211_hdr *hdr11;
754
755 if (!netif_running(hwsim_mon))
756 return;
757
758 skb = dev_alloc_skb(100);
759 if (skb == NULL)
760 return;
761
762 hdr = (struct hwsim_radiotap_ack_hdr *) skb_put(skb, sizeof(*hdr));
763 hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
764 hdr->hdr.it_pad = 0;
765 hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
766 hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
767 (1 << IEEE80211_RADIOTAP_CHANNEL));
768 hdr->rt_flags = 0;
769 hdr->pad = 0;
770 hdr->rt_channel = cpu_to_le16(chan->center_freq);
771 flags = IEEE80211_CHAN_2GHZ;
772 hdr->rt_chbitmask = cpu_to_le16(flags);
773
774 hdr11 = (struct ieee80211_hdr *) skb_put(skb, 10);
775 hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
776 IEEE80211_STYPE_ACK);
777 hdr11->duration_id = cpu_to_le16(0);
778 memcpy(hdr11->addr1, addr, ETH_ALEN);
779
780 skb->dev = hwsim_mon;
781 skb_set_mac_header(skb, 0);
782 skb->ip_summed = CHECKSUM_UNNECESSARY;
783 skb->pkt_type = PACKET_OTHERHOST;
784 skb->protocol = htons(ETH_P_802_2);
785 memset(skb->cb, 0, sizeof(skb->cb));
786 netif_rx(skb);
787 }
788
789 struct mac80211_hwsim_addr_match_data {
790 u8 addr[ETH_ALEN];
791 bool ret;
792 };
793
794 static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
795 struct ieee80211_vif *vif)
796 {
797 struct mac80211_hwsim_addr_match_data *md = data;
798
799 if (memcmp(mac, md->addr, ETH_ALEN) == 0)
800 md->ret = true;
801 }
802
803 static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
804 const u8 *addr)
805 {
806 struct mac80211_hwsim_addr_match_data md = {
807 .ret = false,
808 };
809
810 memcpy(md.addr, addr, ETH_ALEN);
811
812 ieee80211_iterate_active_interfaces_atomic(data->hw,
813 IEEE80211_IFACE_ITER_NORMAL,
814 mac80211_hwsim_addr_iter,
815 &md);
816
817 return md.ret;
818 }
819
820 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
821 struct sk_buff *skb)
822 {
823 switch (data->ps) {
824 case PS_DISABLED:
825 return true;
826 case PS_ENABLED:
827 return false;
828 case PS_AUTO_POLL:
829 /* TODO: accept (some) Beacons by default and other frames only
830 * if pending PS-Poll has been sent */
831 return true;
832 case PS_MANUAL_POLL:
833 /* Allow unicast frames to own address if there is a pending
834 * PS-Poll */
835 if (data->ps_poll_pending &&
836 mac80211_hwsim_addr_match(data, skb->data + 4)) {
837 data->ps_poll_pending = false;
838 return true;
839 }
840 return false;
841 }
842
843 return true;
844 }
845
846 static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
847 struct sk_buff *my_skb,
848 int dst_portid)
849 {
850 struct sk_buff *skb;
851 struct mac80211_hwsim_data *data = hw->priv;
852 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) my_skb->data;
853 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(my_skb);
854 void *msg_head;
855 unsigned int hwsim_flags = 0;
856 int i;
857 struct hwsim_tx_rate tx_attempts[IEEE80211_TX_MAX_RATES];
858
859 if (data->ps != PS_DISABLED)
860 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
861 /* If the queue contains MAX_QUEUE skb's drop some */
862 if (skb_queue_len(&data->pending) >= MAX_QUEUE) {
863 /* Droping until WARN_QUEUE level */
864 while (skb_queue_len(&data->pending) >= WARN_QUEUE)
865 skb_dequeue(&data->pending);
866 }
867
868 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_ATOMIC);
869 if (skb == NULL)
870 goto nla_put_failure;
871
872 msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
873 HWSIM_CMD_FRAME);
874 if (msg_head == NULL) {
875 printk(KERN_DEBUG "mac80211_hwsim: problem with msg_head\n");
876 goto nla_put_failure;
877 }
878
879 if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
880 ETH_ALEN, data->addresses[1].addr))
881 goto nla_put_failure;
882
883 /* We get the skb->data */
884 if (nla_put(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data))
885 goto nla_put_failure;
886
887 /* We get the flags for this transmission, and we translate them to
888 wmediumd flags */
889
890 if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
891 hwsim_flags |= HWSIM_TX_CTL_REQ_TX_STATUS;
892
893 if (info->flags & IEEE80211_TX_CTL_NO_ACK)
894 hwsim_flags |= HWSIM_TX_CTL_NO_ACK;
895
896 if (nla_put_u32(skb, HWSIM_ATTR_FLAGS, hwsim_flags))
897 goto nla_put_failure;
898
899 /* We get the tx control (rate and retries) info*/
900
901 for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
902 tx_attempts[i].idx = info->status.rates[i].idx;
903 tx_attempts[i].count = info->status.rates[i].count;
904 }
905
906 if (nla_put(skb, HWSIM_ATTR_TX_INFO,
907 sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
908 tx_attempts))
909 goto nla_put_failure;
910
911 /* We create a cookie to identify this skb */
912 if (nla_put_u64(skb, HWSIM_ATTR_COOKIE, (unsigned long) my_skb))
913 goto nla_put_failure;
914
915 genlmsg_end(skb, msg_head);
916 genlmsg_unicast(&init_net, skb, dst_portid);
917
918 /* Enqueue the packet */
919 skb_queue_tail(&data->pending, my_skb);
920 return;
921
922 nla_put_failure:
923 printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
924 }
925
926 static bool hwsim_chans_compat(struct ieee80211_channel *c1,
927 struct ieee80211_channel *c2)
928 {
929 if (!c1 || !c2)
930 return false;
931
932 return c1->center_freq == c2->center_freq;
933 }
934
935 struct tx_iter_data {
936 struct ieee80211_channel *channel;
937 bool receive;
938 };
939
940 static void mac80211_hwsim_tx_iter(void *_data, u8 *addr,
941 struct ieee80211_vif *vif)
942 {
943 struct tx_iter_data *data = _data;
944
945 if (!vif->chanctx_conf)
946 return;
947
948 if (!hwsim_chans_compat(data->channel,
949 rcu_dereference(vif->chanctx_conf)->def.chan))
950 return;
951
952 data->receive = true;
953 }
954
955 static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
956 struct sk_buff *skb,
957 struct ieee80211_channel *chan)
958 {
959 struct mac80211_hwsim_data *data = hw->priv, *data2;
960 bool ack = false;
961 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
962 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
963 struct ieee80211_rx_status rx_status;
964 u64 now;
965
966 memset(&rx_status, 0, sizeof(rx_status));
967 rx_status.flag |= RX_FLAG_MACTIME_START;
968 rx_status.freq = chan->center_freq;
969 rx_status.band = chan->band;
970 if (info->control.rates[0].flags & IEEE80211_TX_RC_VHT_MCS) {
971 rx_status.rate_idx =
972 ieee80211_rate_get_vht_mcs(&info->control.rates[0]);
973 rx_status.vht_nss =
974 ieee80211_rate_get_vht_nss(&info->control.rates[0]);
975 rx_status.flag |= RX_FLAG_VHT;
976 } else {
977 rx_status.rate_idx = info->control.rates[0].idx;
978 if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
979 rx_status.flag |= RX_FLAG_HT;
980 }
981 if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
982 rx_status.flag |= RX_FLAG_40MHZ;
983 if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
984 rx_status.flag |= RX_FLAG_SHORT_GI;
985 /* TODO: simulate real signal strength (and optional packet loss) */
986 rx_status.signal = data->power_level - 50;
987
988 if (data->ps != PS_DISABLED)
989 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
990
991 /* release the skb's source info */
992 skb_orphan(skb);
993 skb_dst_drop(skb);
994 skb->mark = 0;
995 secpath_reset(skb);
996 nf_reset(skb);
997
998 /*
999 * Get absolute mactime here so all HWs RX at the "same time", and
1000 * absolute TX time for beacon mactime so the timestamp matches.
1001 * Giving beacons a different mactime than non-beacons looks messy, but
1002 * it helps the Toffset be exact and a ~10us mactime discrepancy
1003 * probably doesn't really matter.
1004 */
1005 if (ieee80211_is_beacon(hdr->frame_control) ||
1006 ieee80211_is_probe_resp(hdr->frame_control))
1007 now = data->abs_bcn_ts;
1008 else
1009 now = mac80211_hwsim_get_tsf_raw();
1010
1011 /* Copy skb to all enabled radios that are on the current frequency */
1012 spin_lock(&hwsim_radio_lock);
1013 list_for_each_entry(data2, &hwsim_radios, list) {
1014 struct sk_buff *nskb;
1015 struct tx_iter_data tx_iter_data = {
1016 .receive = false,
1017 .channel = chan,
1018 };
1019
1020 if (data == data2)
1021 continue;
1022
1023 if (!data2->started || (data2->idle && !data2->tmp_chan) ||
1024 !hwsim_ps_rx_ok(data2, skb))
1025 continue;
1026
1027 if (!(data->group & data2->group))
1028 continue;
1029
1030 if (!hwsim_chans_compat(chan, data2->tmp_chan) &&
1031 !hwsim_chans_compat(chan, data2->channel)) {
1032 ieee80211_iterate_active_interfaces_atomic(
1033 data2->hw, IEEE80211_IFACE_ITER_NORMAL,
1034 mac80211_hwsim_tx_iter, &tx_iter_data);
1035 if (!tx_iter_data.receive)
1036 continue;
1037 }
1038
1039 /*
1040 * reserve some space for our vendor and the normal
1041 * radiotap header, since we're copying anyway
1042 */
1043 if (skb->len < PAGE_SIZE && paged_rx) {
1044 struct page *page = alloc_page(GFP_ATOMIC);
1045
1046 if (!page)
1047 continue;
1048
1049 nskb = dev_alloc_skb(128);
1050 if (!nskb) {
1051 __free_page(page);
1052 continue;
1053 }
1054
1055 memcpy(page_address(page), skb->data, skb->len);
1056 skb_add_rx_frag(nskb, 0, page, 0, skb->len, skb->len);
1057 } else {
1058 nskb = skb_copy(skb, GFP_ATOMIC);
1059 if (!nskb)
1060 continue;
1061 }
1062
1063 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
1064 ack = true;
1065
1066 rx_status.mactime = now + data2->tsf_offset;
1067
1068 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
1069 ieee80211_rx_irqsafe(data2->hw, nskb);
1070 }
1071 spin_unlock(&hwsim_radio_lock);
1072
1073 return ack;
1074 }
1075
1076 static void mac80211_hwsim_tx(struct ieee80211_hw *hw,
1077 struct ieee80211_tx_control *control,
1078 struct sk_buff *skb)
1079 {
1080 struct mac80211_hwsim_data *data = hw->priv;
1081 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1082 struct ieee80211_chanctx_conf *chanctx_conf;
1083 struct ieee80211_channel *channel;
1084 bool ack;
1085 u32 _portid;
1086
1087 if (WARN_ON(skb->len < 10)) {
1088 /* Should not happen; just a sanity check for addr1 use */
1089 ieee80211_free_txskb(hw, skb);
1090 return;
1091 }
1092
1093 if (!data->use_chanctx) {
1094 channel = data->channel;
1095 } else if (txi->hw_queue == 4) {
1096 channel = data->tmp_chan;
1097 } else {
1098 chanctx_conf = rcu_dereference(txi->control.vif->chanctx_conf);
1099 if (chanctx_conf)
1100 channel = chanctx_conf->def.chan;
1101 else
1102 channel = NULL;
1103 }
1104
1105 if (WARN(!channel, "TX w/o channel - queue = %d\n", txi->hw_queue)) {
1106 ieee80211_free_txskb(hw, skb);
1107 return;
1108 }
1109
1110 if (data->idle && !data->tmp_chan) {
1111 wiphy_debug(hw->wiphy, "Trying to TX when idle - reject\n");
1112 ieee80211_free_txskb(hw, skb);
1113 return;
1114 }
1115
1116 if (txi->control.vif)
1117 hwsim_check_magic(txi->control.vif);
1118 if (control->sta)
1119 hwsim_check_sta_magic(control->sta);
1120
1121 if (hw->flags & IEEE80211_HW_SUPPORTS_RC_TABLE)
1122 ieee80211_get_tx_rates(txi->control.vif, control->sta, skb,
1123 txi->control.rates,
1124 ARRAY_SIZE(txi->control.rates));
1125
1126 txi->rate_driver_data[0] = channel;
1127 mac80211_hwsim_monitor_rx(hw, skb, channel);
1128
1129 /* wmediumd mode check */
1130 _portid = ACCESS_ONCE(wmediumd_portid);
1131
1132 if (_portid)
1133 return mac80211_hwsim_tx_frame_nl(hw, skb, _portid);
1134
1135 /* NO wmediumd detected, perfect medium simulation */
1136 ack = mac80211_hwsim_tx_frame_no_nl(hw, skb, channel);
1137
1138 if (ack && skb->len >= 16) {
1139 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1140 mac80211_hwsim_monitor_ack(channel, hdr->addr2);
1141 }
1142
1143 ieee80211_tx_info_clear_status(txi);
1144
1145 /* frame was transmitted at most favorable rate at first attempt */
1146 txi->control.rates[0].count = 1;
1147 txi->control.rates[1].idx = -1;
1148
1149 if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
1150 txi->flags |= IEEE80211_TX_STAT_ACK;
1151 ieee80211_tx_status_irqsafe(hw, skb);
1152 }
1153
1154
1155 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
1156 {
1157 struct mac80211_hwsim_data *data = hw->priv;
1158 wiphy_debug(hw->wiphy, "%s\n", __func__);
1159 data->started = true;
1160 return 0;
1161 }
1162
1163
1164 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
1165 {
1166 struct mac80211_hwsim_data *data = hw->priv;
1167 data->started = false;
1168 tasklet_hrtimer_cancel(&data->beacon_timer);
1169 wiphy_debug(hw->wiphy, "%s\n", __func__);
1170 }
1171
1172
1173 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
1174 struct ieee80211_vif *vif)
1175 {
1176 wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1177 __func__, ieee80211_vif_type_p2p(vif),
1178 vif->addr);
1179 hwsim_set_magic(vif);
1180
1181 vif->cab_queue = 0;
1182 vif->hw_queue[IEEE80211_AC_VO] = 0;
1183 vif->hw_queue[IEEE80211_AC_VI] = 1;
1184 vif->hw_queue[IEEE80211_AC_BE] = 2;
1185 vif->hw_queue[IEEE80211_AC_BK] = 3;
1186
1187 return 0;
1188 }
1189
1190
1191 static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
1192 struct ieee80211_vif *vif,
1193 enum nl80211_iftype newtype,
1194 bool newp2p)
1195 {
1196 newtype = ieee80211_iftype_p2p(newtype, newp2p);
1197 wiphy_debug(hw->wiphy,
1198 "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
1199 __func__, ieee80211_vif_type_p2p(vif),
1200 newtype, vif->addr);
1201 hwsim_check_magic(vif);
1202
1203 /*
1204 * interface may change from non-AP to AP in
1205 * which case this needs to be set up again
1206 */
1207 vif->cab_queue = 0;
1208
1209 return 0;
1210 }
1211
1212 static void mac80211_hwsim_remove_interface(
1213 struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1214 {
1215 wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1216 __func__, ieee80211_vif_type_p2p(vif),
1217 vif->addr);
1218 hwsim_check_magic(vif);
1219 hwsim_clear_magic(vif);
1220 }
1221
1222 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
1223 struct sk_buff *skb,
1224 struct ieee80211_channel *chan)
1225 {
1226 u32 _pid = ACCESS_ONCE(wmediumd_portid);
1227
1228 if (hw->flags & IEEE80211_HW_SUPPORTS_RC_TABLE) {
1229 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1230 ieee80211_get_tx_rates(txi->control.vif, NULL, skb,
1231 txi->control.rates,
1232 ARRAY_SIZE(txi->control.rates));
1233 }
1234
1235 mac80211_hwsim_monitor_rx(hw, skb, chan);
1236
1237 if (_pid)
1238 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
1239
1240 mac80211_hwsim_tx_frame_no_nl(hw, skb, chan);
1241 dev_kfree_skb(skb);
1242 }
1243
1244 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
1245 struct ieee80211_vif *vif)
1246 {
1247 struct mac80211_hwsim_data *data = arg;
1248 struct ieee80211_hw *hw = data->hw;
1249 struct ieee80211_tx_info *info;
1250 struct ieee80211_rate *txrate;
1251 struct ieee80211_mgmt *mgmt;
1252 struct sk_buff *skb;
1253
1254 hwsim_check_magic(vif);
1255
1256 if (vif->type != NL80211_IFTYPE_AP &&
1257 vif->type != NL80211_IFTYPE_MESH_POINT &&
1258 vif->type != NL80211_IFTYPE_ADHOC)
1259 return;
1260
1261 skb = ieee80211_beacon_get(hw, vif);
1262 if (skb == NULL)
1263 return;
1264 info = IEEE80211_SKB_CB(skb);
1265 if (hw->flags & IEEE80211_HW_SUPPORTS_RC_TABLE)
1266 ieee80211_get_tx_rates(vif, NULL, skb,
1267 info->control.rates,
1268 ARRAY_SIZE(info->control.rates));
1269
1270 txrate = ieee80211_get_tx_rate(hw, info);
1271
1272 mgmt = (struct ieee80211_mgmt *) skb->data;
1273 /* fake header transmission time */
1274 data->abs_bcn_ts = mac80211_hwsim_get_tsf_raw();
1275 mgmt->u.beacon.timestamp = cpu_to_le64(data->abs_bcn_ts +
1276 data->tsf_offset +
1277 24 * 8 * 10 / txrate->bitrate);
1278
1279 mac80211_hwsim_tx_frame(hw, skb,
1280 rcu_dereference(vif->chanctx_conf)->def.chan);
1281
1282 if (vif->csa_active && ieee80211_csa_is_complete(vif))
1283 ieee80211_csa_finish(vif);
1284 }
1285
1286 static enum hrtimer_restart
1287 mac80211_hwsim_beacon(struct hrtimer *timer)
1288 {
1289 struct mac80211_hwsim_data *data =
1290 container_of(timer, struct mac80211_hwsim_data,
1291 beacon_timer.timer);
1292 struct ieee80211_hw *hw = data->hw;
1293 u64 bcn_int = data->beacon_int;
1294 ktime_t next_bcn;
1295
1296 if (!data->started)
1297 goto out;
1298
1299 ieee80211_iterate_active_interfaces_atomic(
1300 hw, IEEE80211_IFACE_ITER_NORMAL,
1301 mac80211_hwsim_beacon_tx, data);
1302
1303 /* beacon at new TBTT + beacon interval */
1304 if (data->bcn_delta) {
1305 bcn_int -= data->bcn_delta;
1306 data->bcn_delta = 0;
1307 }
1308
1309 next_bcn = ktime_add(hrtimer_get_expires(timer),
1310 ns_to_ktime(bcn_int * 1000));
1311 tasklet_hrtimer_start(&data->beacon_timer, next_bcn, HRTIMER_MODE_ABS);
1312 out:
1313 return HRTIMER_NORESTART;
1314 }
1315
1316 static const char * const hwsim_chanwidths[] = {
1317 [NL80211_CHAN_WIDTH_20_NOHT] = "noht",
1318 [NL80211_CHAN_WIDTH_20] = "ht20",
1319 [NL80211_CHAN_WIDTH_40] = "ht40",
1320 [NL80211_CHAN_WIDTH_80] = "vht80",
1321 [NL80211_CHAN_WIDTH_80P80] = "vht80p80",
1322 [NL80211_CHAN_WIDTH_160] = "vht160",
1323 };
1324
1325 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
1326 {
1327 struct mac80211_hwsim_data *data = hw->priv;
1328 struct ieee80211_conf *conf = &hw->conf;
1329 static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
1330 [IEEE80211_SMPS_AUTOMATIC] = "auto",
1331 [IEEE80211_SMPS_OFF] = "off",
1332 [IEEE80211_SMPS_STATIC] = "static",
1333 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
1334 };
1335
1336 if (conf->chandef.chan)
1337 wiphy_debug(hw->wiphy,
1338 "%s (freq=%d(%d - %d)/%s idle=%d ps=%d smps=%s)\n",
1339 __func__,
1340 conf->chandef.chan->center_freq,
1341 conf->chandef.center_freq1,
1342 conf->chandef.center_freq2,
1343 hwsim_chanwidths[conf->chandef.width],
1344 !!(conf->flags & IEEE80211_CONF_IDLE),
1345 !!(conf->flags & IEEE80211_CONF_PS),
1346 smps_modes[conf->smps_mode]);
1347 else
1348 wiphy_debug(hw->wiphy,
1349 "%s (freq=0 idle=%d ps=%d smps=%s)\n",
1350 __func__,
1351 !!(conf->flags & IEEE80211_CONF_IDLE),
1352 !!(conf->flags & IEEE80211_CONF_PS),
1353 smps_modes[conf->smps_mode]);
1354
1355 data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
1356
1357 data->channel = conf->chandef.chan;
1358
1359 WARN_ON(data->channel && data->use_chanctx);
1360
1361 data->power_level = conf->power_level;
1362 if (!data->started || !data->beacon_int)
1363 tasklet_hrtimer_cancel(&data->beacon_timer);
1364 else if (!hrtimer_is_queued(&data->beacon_timer.timer)) {
1365 u64 tsf = mac80211_hwsim_get_tsf(hw, NULL);
1366 u32 bcn_int = data->beacon_int;
1367 u64 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1368
1369 tasklet_hrtimer_start(&data->beacon_timer,
1370 ns_to_ktime(until_tbtt * 1000),
1371 HRTIMER_MODE_REL);
1372 }
1373
1374 return 0;
1375 }
1376
1377
1378 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
1379 unsigned int changed_flags,
1380 unsigned int *total_flags,u64 multicast)
1381 {
1382 struct mac80211_hwsim_data *data = hw->priv;
1383
1384 wiphy_debug(hw->wiphy, "%s\n", __func__);
1385
1386 data->rx_filter = 0;
1387 if (*total_flags & FIF_PROMISC_IN_BSS)
1388 data->rx_filter |= FIF_PROMISC_IN_BSS;
1389 if (*total_flags & FIF_ALLMULTI)
1390 data->rx_filter |= FIF_ALLMULTI;
1391
1392 *total_flags = data->rx_filter;
1393 }
1394
1395 static void mac80211_hwsim_bcn_en_iter(void *data, u8 *mac,
1396 struct ieee80211_vif *vif)
1397 {
1398 unsigned int *count = data;
1399 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1400
1401 if (vp->bcn_en)
1402 (*count)++;
1403 }
1404
1405 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
1406 struct ieee80211_vif *vif,
1407 struct ieee80211_bss_conf *info,
1408 u32 changed)
1409 {
1410 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1411 struct mac80211_hwsim_data *data = hw->priv;
1412
1413 hwsim_check_magic(vif);
1414
1415 wiphy_debug(hw->wiphy, "%s(changed=0x%x vif->addr=%pM)\n",
1416 __func__, changed, vif->addr);
1417
1418 if (changed & BSS_CHANGED_BSSID) {
1419 wiphy_debug(hw->wiphy, "%s: BSSID changed: %pM\n",
1420 __func__, info->bssid);
1421 memcpy(vp->bssid, info->bssid, ETH_ALEN);
1422 }
1423
1424 if (changed & BSS_CHANGED_ASSOC) {
1425 wiphy_debug(hw->wiphy, " ASSOC: assoc=%d aid=%d\n",
1426 info->assoc, info->aid);
1427 vp->assoc = info->assoc;
1428 vp->aid = info->aid;
1429 }
1430
1431 if (changed & BSS_CHANGED_BEACON_INT) {
1432 wiphy_debug(hw->wiphy, " BCNINT: %d\n", info->beacon_int);
1433 data->beacon_int = info->beacon_int * 1024;
1434 }
1435
1436 if (changed & BSS_CHANGED_BEACON_ENABLED) {
1437 wiphy_debug(hw->wiphy, " BCN EN: %d\n", info->enable_beacon);
1438 vp->bcn_en = info->enable_beacon;
1439 if (data->started &&
1440 !hrtimer_is_queued(&data->beacon_timer.timer) &&
1441 info->enable_beacon) {
1442 u64 tsf, until_tbtt;
1443 u32 bcn_int;
1444 if (WARN_ON(!data->beacon_int))
1445 data->beacon_int = 1000 * 1024;
1446 tsf = mac80211_hwsim_get_tsf(hw, vif);
1447 bcn_int = data->beacon_int;
1448 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1449 tasklet_hrtimer_start(&data->beacon_timer,
1450 ns_to_ktime(until_tbtt * 1000),
1451 HRTIMER_MODE_REL);
1452 } else if (!info->enable_beacon) {
1453 unsigned int count = 0;
1454 ieee80211_iterate_active_interfaces_atomic(
1455 data->hw, IEEE80211_IFACE_ITER_NORMAL,
1456 mac80211_hwsim_bcn_en_iter, &count);
1457 wiphy_debug(hw->wiphy, " beaconing vifs remaining: %u",
1458 count);
1459 if (count == 0)
1460 tasklet_hrtimer_cancel(&data->beacon_timer);
1461 }
1462 }
1463
1464 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1465 wiphy_debug(hw->wiphy, " ERP_CTS_PROT: %d\n",
1466 info->use_cts_prot);
1467 }
1468
1469 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1470 wiphy_debug(hw->wiphy, " ERP_PREAMBLE: %d\n",
1471 info->use_short_preamble);
1472 }
1473
1474 if (changed & BSS_CHANGED_ERP_SLOT) {
1475 wiphy_debug(hw->wiphy, " ERP_SLOT: %d\n", info->use_short_slot);
1476 }
1477
1478 if (changed & BSS_CHANGED_HT) {
1479 wiphy_debug(hw->wiphy, " HT: op_mode=0x%x\n",
1480 info->ht_operation_mode);
1481 }
1482
1483 if (changed & BSS_CHANGED_BASIC_RATES) {
1484 wiphy_debug(hw->wiphy, " BASIC_RATES: 0x%llx\n",
1485 (unsigned long long) info->basic_rates);
1486 }
1487
1488 if (changed & BSS_CHANGED_TXPOWER)
1489 wiphy_debug(hw->wiphy, " TX Power: %d dBm\n", info->txpower);
1490 }
1491
1492 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
1493 struct ieee80211_vif *vif,
1494 struct ieee80211_sta *sta)
1495 {
1496 hwsim_check_magic(vif);
1497 hwsim_set_sta_magic(sta);
1498
1499 return 0;
1500 }
1501
1502 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
1503 struct ieee80211_vif *vif,
1504 struct ieee80211_sta *sta)
1505 {
1506 hwsim_check_magic(vif);
1507 hwsim_clear_sta_magic(sta);
1508
1509 return 0;
1510 }
1511
1512 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
1513 struct ieee80211_vif *vif,
1514 enum sta_notify_cmd cmd,
1515 struct ieee80211_sta *sta)
1516 {
1517 hwsim_check_magic(vif);
1518
1519 switch (cmd) {
1520 case STA_NOTIFY_SLEEP:
1521 case STA_NOTIFY_AWAKE:
1522 /* TODO: make good use of these flags */
1523 break;
1524 default:
1525 WARN(1, "Invalid sta notify: %d\n", cmd);
1526 break;
1527 }
1528 }
1529
1530 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
1531 struct ieee80211_sta *sta,
1532 bool set)
1533 {
1534 hwsim_check_sta_magic(sta);
1535 return 0;
1536 }
1537
1538 static int mac80211_hwsim_conf_tx(
1539 struct ieee80211_hw *hw,
1540 struct ieee80211_vif *vif, u16 queue,
1541 const struct ieee80211_tx_queue_params *params)
1542 {
1543 wiphy_debug(hw->wiphy,
1544 "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
1545 __func__, queue,
1546 params->txop, params->cw_min,
1547 params->cw_max, params->aifs);
1548 return 0;
1549 }
1550
1551 static int mac80211_hwsim_get_survey(
1552 struct ieee80211_hw *hw, int idx,
1553 struct survey_info *survey)
1554 {
1555 struct ieee80211_conf *conf = &hw->conf;
1556
1557 wiphy_debug(hw->wiphy, "%s (idx=%d)\n", __func__, idx);
1558
1559 if (idx != 0)
1560 return -ENOENT;
1561
1562 /* Current channel */
1563 survey->channel = conf->chandef.chan;
1564
1565 /*
1566 * Magically conjured noise level --- this is only ok for simulated hardware.
1567 *
1568 * A real driver which cannot determine the real channel noise MUST NOT
1569 * report any noise, especially not a magically conjured one :-)
1570 */
1571 survey->filled = SURVEY_INFO_NOISE_DBM;
1572 survey->noise = -92;
1573
1574 return 0;
1575 }
1576
1577 #ifdef CONFIG_NL80211_TESTMODE
1578 /*
1579 * This section contains example code for using netlink
1580 * attributes with the testmode command in nl80211.
1581 */
1582
1583 /* These enums need to be kept in sync with userspace */
1584 enum hwsim_testmode_attr {
1585 __HWSIM_TM_ATTR_INVALID = 0,
1586 HWSIM_TM_ATTR_CMD = 1,
1587 HWSIM_TM_ATTR_PS = 2,
1588
1589 /* keep last */
1590 __HWSIM_TM_ATTR_AFTER_LAST,
1591 HWSIM_TM_ATTR_MAX = __HWSIM_TM_ATTR_AFTER_LAST - 1
1592 };
1593
1594 enum hwsim_testmode_cmd {
1595 HWSIM_TM_CMD_SET_PS = 0,
1596 HWSIM_TM_CMD_GET_PS = 1,
1597 HWSIM_TM_CMD_STOP_QUEUES = 2,
1598 HWSIM_TM_CMD_WAKE_QUEUES = 3,
1599 };
1600
1601 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
1602 [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
1603 [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
1604 };
1605
1606 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
1607 struct ieee80211_vif *vif,
1608 void *data, int len)
1609 {
1610 struct mac80211_hwsim_data *hwsim = hw->priv;
1611 struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
1612 struct sk_buff *skb;
1613 int err, ps;
1614
1615 err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
1616 hwsim_testmode_policy);
1617 if (err)
1618 return err;
1619
1620 if (!tb[HWSIM_TM_ATTR_CMD])
1621 return -EINVAL;
1622
1623 switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
1624 case HWSIM_TM_CMD_SET_PS:
1625 if (!tb[HWSIM_TM_ATTR_PS])
1626 return -EINVAL;
1627 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
1628 return hwsim_fops_ps_write(hwsim, ps);
1629 case HWSIM_TM_CMD_GET_PS:
1630 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
1631 nla_total_size(sizeof(u32)));
1632 if (!skb)
1633 return -ENOMEM;
1634 if (nla_put_u32(skb, HWSIM_TM_ATTR_PS, hwsim->ps))
1635 goto nla_put_failure;
1636 return cfg80211_testmode_reply(skb);
1637 case HWSIM_TM_CMD_STOP_QUEUES:
1638 ieee80211_stop_queues(hw);
1639 return 0;
1640 case HWSIM_TM_CMD_WAKE_QUEUES:
1641 ieee80211_wake_queues(hw);
1642 return 0;
1643 default:
1644 return -EOPNOTSUPP;
1645 }
1646
1647 nla_put_failure:
1648 kfree_skb(skb);
1649 return -ENOBUFS;
1650 }
1651 #endif
1652
1653 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
1654 struct ieee80211_vif *vif,
1655 enum ieee80211_ampdu_mlme_action action,
1656 struct ieee80211_sta *sta, u16 tid, u16 *ssn,
1657 u8 buf_size)
1658 {
1659 switch (action) {
1660 case IEEE80211_AMPDU_TX_START:
1661 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1662 break;
1663 case IEEE80211_AMPDU_TX_STOP_CONT:
1664 case IEEE80211_AMPDU_TX_STOP_FLUSH:
1665 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
1666 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1667 break;
1668 case IEEE80211_AMPDU_TX_OPERATIONAL:
1669 break;
1670 case IEEE80211_AMPDU_RX_START:
1671 case IEEE80211_AMPDU_RX_STOP:
1672 break;
1673 default:
1674 return -EOPNOTSUPP;
1675 }
1676
1677 return 0;
1678 }
1679
1680 static void mac80211_hwsim_flush(struct ieee80211_hw *hw,
1681 struct ieee80211_vif *vif,
1682 u32 queues, bool drop)
1683 {
1684 /* Not implemented, queues only on kernel side */
1685 }
1686
1687 static void hw_scan_work(struct work_struct *work)
1688 {
1689 struct mac80211_hwsim_data *hwsim =
1690 container_of(work, struct mac80211_hwsim_data, hw_scan.work);
1691 struct cfg80211_scan_request *req = hwsim->hw_scan_request;
1692 int dwell, i;
1693
1694 mutex_lock(&hwsim->mutex);
1695 if (hwsim->scan_chan_idx >= req->n_channels) {
1696 wiphy_debug(hwsim->hw->wiphy, "hw scan complete\n");
1697 ieee80211_scan_completed(hwsim->hw, false);
1698 hwsim->hw_scan_request = NULL;
1699 hwsim->hw_scan_vif = NULL;
1700 hwsim->tmp_chan = NULL;
1701 mutex_unlock(&hwsim->mutex);
1702 return;
1703 }
1704
1705 wiphy_debug(hwsim->hw->wiphy, "hw scan %d MHz\n",
1706 req->channels[hwsim->scan_chan_idx]->center_freq);
1707
1708 hwsim->tmp_chan = req->channels[hwsim->scan_chan_idx];
1709 if (hwsim->tmp_chan->flags & IEEE80211_CHAN_NO_IR ||
1710 !req->n_ssids) {
1711 dwell = 120;
1712 } else {
1713 dwell = 30;
1714 /* send probes */
1715 for (i = 0; i < req->n_ssids; i++) {
1716 struct sk_buff *probe;
1717
1718 probe = ieee80211_probereq_get(hwsim->hw,
1719 hwsim->hw_scan_vif,
1720 req->ssids[i].ssid,
1721 req->ssids[i].ssid_len,
1722 req->ie_len);
1723 if (!probe)
1724 continue;
1725
1726 if (req->ie_len)
1727 memcpy(skb_put(probe, req->ie_len), req->ie,
1728 req->ie_len);
1729
1730 local_bh_disable();
1731 mac80211_hwsim_tx_frame(hwsim->hw, probe,
1732 hwsim->tmp_chan);
1733 local_bh_enable();
1734 }
1735 }
1736 ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan,
1737 msecs_to_jiffies(dwell));
1738 hwsim->scan_chan_idx++;
1739 mutex_unlock(&hwsim->mutex);
1740 }
1741
1742 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
1743 struct ieee80211_vif *vif,
1744 struct ieee80211_scan_request *hw_req)
1745 {
1746 struct mac80211_hwsim_data *hwsim = hw->priv;
1747 struct cfg80211_scan_request *req = &hw_req->req;
1748
1749 mutex_lock(&hwsim->mutex);
1750 if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
1751 mutex_unlock(&hwsim->mutex);
1752 return -EBUSY;
1753 }
1754 hwsim->hw_scan_request = req;
1755 hwsim->hw_scan_vif = vif;
1756 hwsim->scan_chan_idx = 0;
1757 mutex_unlock(&hwsim->mutex);
1758
1759 wiphy_debug(hw->wiphy, "hwsim hw_scan request\n");
1760
1761 ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan, 0);
1762
1763 return 0;
1764 }
1765
1766 static void mac80211_hwsim_cancel_hw_scan(struct ieee80211_hw *hw,
1767 struct ieee80211_vif *vif)
1768 {
1769 struct mac80211_hwsim_data *hwsim = hw->priv;
1770
1771 wiphy_debug(hw->wiphy, "hwsim cancel_hw_scan\n");
1772
1773 cancel_delayed_work_sync(&hwsim->hw_scan);
1774
1775 mutex_lock(&hwsim->mutex);
1776 ieee80211_scan_completed(hwsim->hw, true);
1777 hwsim->tmp_chan = NULL;
1778 hwsim->hw_scan_request = NULL;
1779 hwsim->hw_scan_vif = NULL;
1780 mutex_unlock(&hwsim->mutex);
1781 }
1782
1783 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw)
1784 {
1785 struct mac80211_hwsim_data *hwsim = hw->priv;
1786
1787 mutex_lock(&hwsim->mutex);
1788
1789 if (hwsim->scanning) {
1790 printk(KERN_DEBUG "two hwsim sw_scans detected!\n");
1791 goto out;
1792 }
1793
1794 printk(KERN_DEBUG "hwsim sw_scan request, prepping stuff\n");
1795 hwsim->scanning = true;
1796
1797 out:
1798 mutex_unlock(&hwsim->mutex);
1799 }
1800
1801 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw)
1802 {
1803 struct mac80211_hwsim_data *hwsim = hw->priv;
1804
1805 mutex_lock(&hwsim->mutex);
1806
1807 printk(KERN_DEBUG "hwsim sw_scan_complete\n");
1808 hwsim->scanning = false;
1809
1810 mutex_unlock(&hwsim->mutex);
1811 }
1812
1813 static void hw_roc_done(struct work_struct *work)
1814 {
1815 struct mac80211_hwsim_data *hwsim =
1816 container_of(work, struct mac80211_hwsim_data, roc_done.work);
1817
1818 mutex_lock(&hwsim->mutex);
1819 ieee80211_remain_on_channel_expired(hwsim->hw);
1820 hwsim->tmp_chan = NULL;
1821 mutex_unlock(&hwsim->mutex);
1822
1823 wiphy_debug(hwsim->hw->wiphy, "hwsim ROC expired\n");
1824 }
1825
1826 static int mac80211_hwsim_roc(struct ieee80211_hw *hw,
1827 struct ieee80211_vif *vif,
1828 struct ieee80211_channel *chan,
1829 int duration,
1830 enum ieee80211_roc_type type)
1831 {
1832 struct mac80211_hwsim_data *hwsim = hw->priv;
1833
1834 mutex_lock(&hwsim->mutex);
1835 if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
1836 mutex_unlock(&hwsim->mutex);
1837 return -EBUSY;
1838 }
1839
1840 hwsim->tmp_chan = chan;
1841 mutex_unlock(&hwsim->mutex);
1842
1843 wiphy_debug(hw->wiphy, "hwsim ROC (%d MHz, %d ms)\n",
1844 chan->center_freq, duration);
1845
1846 ieee80211_ready_on_channel(hw);
1847
1848 ieee80211_queue_delayed_work(hw, &hwsim->roc_done,
1849 msecs_to_jiffies(duration));
1850 return 0;
1851 }
1852
1853 static int mac80211_hwsim_croc(struct ieee80211_hw *hw)
1854 {
1855 struct mac80211_hwsim_data *hwsim = hw->priv;
1856
1857 cancel_delayed_work_sync(&hwsim->roc_done);
1858
1859 mutex_lock(&hwsim->mutex);
1860 hwsim->tmp_chan = NULL;
1861 mutex_unlock(&hwsim->mutex);
1862
1863 wiphy_debug(hw->wiphy, "hwsim ROC canceled\n");
1864
1865 return 0;
1866 }
1867
1868 static int mac80211_hwsim_add_chanctx(struct ieee80211_hw *hw,
1869 struct ieee80211_chanctx_conf *ctx)
1870 {
1871 hwsim_set_chanctx_magic(ctx);
1872 wiphy_debug(hw->wiphy,
1873 "add channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
1874 ctx->def.chan->center_freq, ctx->def.width,
1875 ctx->def.center_freq1, ctx->def.center_freq2);
1876 return 0;
1877 }
1878
1879 static void mac80211_hwsim_remove_chanctx(struct ieee80211_hw *hw,
1880 struct ieee80211_chanctx_conf *ctx)
1881 {
1882 wiphy_debug(hw->wiphy,
1883 "remove channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
1884 ctx->def.chan->center_freq, ctx->def.width,
1885 ctx->def.center_freq1, ctx->def.center_freq2);
1886 hwsim_check_chanctx_magic(ctx);
1887 hwsim_clear_chanctx_magic(ctx);
1888 }
1889
1890 static void mac80211_hwsim_change_chanctx(struct ieee80211_hw *hw,
1891 struct ieee80211_chanctx_conf *ctx,
1892 u32 changed)
1893 {
1894 hwsim_check_chanctx_magic(ctx);
1895 wiphy_debug(hw->wiphy,
1896 "change channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
1897 ctx->def.chan->center_freq, ctx->def.width,
1898 ctx->def.center_freq1, ctx->def.center_freq2);
1899 }
1900
1901 static int mac80211_hwsim_assign_vif_chanctx(struct ieee80211_hw *hw,
1902 struct ieee80211_vif *vif,
1903 struct ieee80211_chanctx_conf *ctx)
1904 {
1905 hwsim_check_magic(vif);
1906 hwsim_check_chanctx_magic(ctx);
1907
1908 return 0;
1909 }
1910
1911 static void mac80211_hwsim_unassign_vif_chanctx(struct ieee80211_hw *hw,
1912 struct ieee80211_vif *vif,
1913 struct ieee80211_chanctx_conf *ctx)
1914 {
1915 hwsim_check_magic(vif);
1916 hwsim_check_chanctx_magic(ctx);
1917 }
1918
1919 static const struct ieee80211_ops mac80211_hwsim_ops = {
1920 .tx = mac80211_hwsim_tx,
1921 .start = mac80211_hwsim_start,
1922 .stop = mac80211_hwsim_stop,
1923 .add_interface = mac80211_hwsim_add_interface,
1924 .change_interface = mac80211_hwsim_change_interface,
1925 .remove_interface = mac80211_hwsim_remove_interface,
1926 .config = mac80211_hwsim_config,
1927 .configure_filter = mac80211_hwsim_configure_filter,
1928 .bss_info_changed = mac80211_hwsim_bss_info_changed,
1929 .sta_add = mac80211_hwsim_sta_add,
1930 .sta_remove = mac80211_hwsim_sta_remove,
1931 .sta_notify = mac80211_hwsim_sta_notify,
1932 .set_tim = mac80211_hwsim_set_tim,
1933 .conf_tx = mac80211_hwsim_conf_tx,
1934 .get_survey = mac80211_hwsim_get_survey,
1935 CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)
1936 .ampdu_action = mac80211_hwsim_ampdu_action,
1937 .sw_scan_start = mac80211_hwsim_sw_scan,
1938 .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
1939 .flush = mac80211_hwsim_flush,
1940 .get_tsf = mac80211_hwsim_get_tsf,
1941 .set_tsf = mac80211_hwsim_set_tsf,
1942 };
1943
1944 static struct ieee80211_ops mac80211_hwsim_mchan_ops;
1945
1946 static int mac80211_hwsim_create_radio(int channels, const char *reg_alpha2,
1947 const struct ieee80211_regdomain *regd,
1948 bool reg_strict, bool p2p_device,
1949 bool use_chanctx)
1950 {
1951 int err;
1952 u8 addr[ETH_ALEN];
1953 struct mac80211_hwsim_data *data;
1954 struct ieee80211_hw *hw;
1955 enum ieee80211_band band;
1956 const struct ieee80211_ops *ops = &mac80211_hwsim_ops;
1957 int idx;
1958
1959 if (WARN_ON(channels > 1 && !use_chanctx))
1960 return -EINVAL;
1961
1962 spin_lock_bh(&hwsim_radio_lock);
1963 idx = hwsim_radio_idx++;
1964 spin_unlock_bh(&hwsim_radio_lock);
1965
1966 if (use_chanctx)
1967 ops = &mac80211_hwsim_mchan_ops;
1968 hw = ieee80211_alloc_hw(sizeof(*data), ops);
1969 if (!hw) {
1970 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw failed\n");
1971 err = -ENOMEM;
1972 goto failed;
1973 }
1974 data = hw->priv;
1975 data->hw = hw;
1976
1977 data->dev = device_create(hwsim_class, NULL, 0, hw, "hwsim%d", idx);
1978 if (IS_ERR(data->dev)) {
1979 printk(KERN_DEBUG
1980 "mac80211_hwsim: device_create failed (%ld)\n",
1981 PTR_ERR(data->dev));
1982 err = -ENOMEM;
1983 goto failed_drvdata;
1984 }
1985 data->dev->driver = &mac80211_hwsim_driver.driver;
1986 err = device_bind_driver(data->dev);
1987 if (err != 0) {
1988 printk(KERN_DEBUG "mac80211_hwsim: device_bind_driver failed (%d)\n",
1989 err);
1990 goto failed_bind;
1991 }
1992
1993 skb_queue_head_init(&data->pending);
1994
1995 SET_IEEE80211_DEV(hw, data->dev);
1996 memset(addr, 0, ETH_ALEN);
1997 addr[0] = 0x02;
1998 addr[3] = idx >> 8;
1999 addr[4] = idx;
2000 memcpy(data->addresses[0].addr, addr, ETH_ALEN);
2001 memcpy(data->addresses[1].addr, addr, ETH_ALEN);
2002 data->addresses[1].addr[0] |= 0x40;
2003 hw->wiphy->n_addresses = 2;
2004 hw->wiphy->addresses = data->addresses;
2005
2006 data->channels = channels;
2007 data->use_chanctx = use_chanctx;
2008 data->idx = idx;
2009
2010 if (data->use_chanctx) {
2011 hw->wiphy->max_scan_ssids = 255;
2012 hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
2013 hw->wiphy->max_remain_on_channel_duration = 1000;
2014 /* For channels > 1 DFS is not allowed */
2015 hw->wiphy->n_iface_combinations = 1;
2016 hw->wiphy->iface_combinations = &data->if_combination;
2017 if (p2p_device)
2018 data->if_combination = hwsim_if_comb_p2p_dev[0];
2019 else
2020 data->if_combination = hwsim_if_comb[0];
2021 data->if_combination.num_different_channels = data->channels;
2022 } else if (p2p_device) {
2023 hw->wiphy->iface_combinations = hwsim_if_comb_p2p_dev;
2024 hw->wiphy->n_iface_combinations =
2025 ARRAY_SIZE(hwsim_if_comb_p2p_dev);
2026 } else {
2027 hw->wiphy->iface_combinations = hwsim_if_comb;
2028 hw->wiphy->n_iface_combinations = ARRAY_SIZE(hwsim_if_comb);
2029 }
2030
2031 INIT_DELAYED_WORK(&data->roc_done, hw_roc_done);
2032 INIT_DELAYED_WORK(&data->hw_scan, hw_scan_work);
2033
2034 hw->queues = 5;
2035 hw->offchannel_tx_hw_queue = 4;
2036 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
2037 BIT(NL80211_IFTYPE_AP) |
2038 BIT(NL80211_IFTYPE_P2P_CLIENT) |
2039 BIT(NL80211_IFTYPE_P2P_GO) |
2040 BIT(NL80211_IFTYPE_ADHOC) |
2041 BIT(NL80211_IFTYPE_MESH_POINT);
2042
2043 if (p2p_device)
2044 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_P2P_DEVICE);
2045
2046 hw->flags = IEEE80211_HW_MFP_CAPABLE |
2047 IEEE80211_HW_SIGNAL_DBM |
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 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
2062 NL80211_FEATURE_STATIC_SMPS |
2063 NL80211_FEATURE_DYNAMIC_SMPS;
2064
2065 /* ask mac80211 to reserve space for magic */
2066 hw->vif_data_size = sizeof(struct hwsim_vif_priv);
2067 hw->sta_data_size = sizeof(struct hwsim_sta_priv);
2068 hw->chanctx_data_size = sizeof(struct hwsim_chanctx_priv);
2069
2070 memcpy(data->channels_2ghz, hwsim_channels_2ghz,
2071 sizeof(hwsim_channels_2ghz));
2072 memcpy(data->channels_5ghz, hwsim_channels_5ghz,
2073 sizeof(hwsim_channels_5ghz));
2074 memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
2075
2076 for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) {
2077 struct ieee80211_supported_band *sband = &data->bands[band];
2078 switch (band) {
2079 case IEEE80211_BAND_2GHZ:
2080 sband->channels = data->channels_2ghz;
2081 sband->n_channels = ARRAY_SIZE(hwsim_channels_2ghz);
2082 sband->bitrates = data->rates;
2083 sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
2084 break;
2085 case IEEE80211_BAND_5GHZ:
2086 sband->channels = data->channels_5ghz;
2087 sband->n_channels = ARRAY_SIZE(hwsim_channels_5ghz);
2088 sband->bitrates = data->rates + 4;
2089 sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
2090 break;
2091 default:
2092 continue;
2093 }
2094
2095 sband->ht_cap.ht_supported = true;
2096 sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
2097 IEEE80211_HT_CAP_GRN_FLD |
2098 IEEE80211_HT_CAP_SGI_40 |
2099 IEEE80211_HT_CAP_DSSSCCK40;
2100 sband->ht_cap.ampdu_factor = 0x3;
2101 sband->ht_cap.ampdu_density = 0x6;
2102 memset(&sband->ht_cap.mcs, 0,
2103 sizeof(sband->ht_cap.mcs));
2104 sband->ht_cap.mcs.rx_mask[0] = 0xff;
2105 sband->ht_cap.mcs.rx_mask[1] = 0xff;
2106 sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2107
2108 hw->wiphy->bands[band] = sband;
2109
2110 sband->vht_cap.vht_supported = true;
2111 sband->vht_cap.cap =
2112 IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 |
2113 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ |
2114 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ |
2115 IEEE80211_VHT_CAP_RXLDPC |
2116 IEEE80211_VHT_CAP_SHORT_GI_80 |
2117 IEEE80211_VHT_CAP_SHORT_GI_160 |
2118 IEEE80211_VHT_CAP_TXSTBC |
2119 IEEE80211_VHT_CAP_RXSTBC_1 |
2120 IEEE80211_VHT_CAP_RXSTBC_2 |
2121 IEEE80211_VHT_CAP_RXSTBC_3 |
2122 IEEE80211_VHT_CAP_RXSTBC_4 |
2123 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
2124 sband->vht_cap.vht_mcs.rx_mcs_map =
2125 cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_8 << 0 |
2126 IEEE80211_VHT_MCS_SUPPORT_0_8 << 2 |
2127 IEEE80211_VHT_MCS_SUPPORT_0_9 << 4 |
2128 IEEE80211_VHT_MCS_SUPPORT_0_8 << 6 |
2129 IEEE80211_VHT_MCS_SUPPORT_0_8 << 8 |
2130 IEEE80211_VHT_MCS_SUPPORT_0_9 << 10 |
2131 IEEE80211_VHT_MCS_SUPPORT_0_9 << 12 |
2132 IEEE80211_VHT_MCS_SUPPORT_0_8 << 14);
2133 sband->vht_cap.vht_mcs.tx_mcs_map =
2134 sband->vht_cap.vht_mcs.rx_mcs_map;
2135 }
2136
2137 /* By default all radios belong to the first group */
2138 data->group = 1;
2139 mutex_init(&data->mutex);
2140
2141 /* Enable frame retransmissions for lossy channels */
2142 hw->max_rates = 4;
2143 hw->max_rate_tries = 11;
2144
2145 if (reg_strict)
2146 hw->wiphy->regulatory_flags |= REGULATORY_STRICT_REG;
2147 if (regd) {
2148 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG;
2149 wiphy_apply_custom_regulatory(hw->wiphy, regd);
2150 /* give the regulatory workqueue a chance to run */
2151 schedule_timeout_interruptible(1);
2152 }
2153
2154 err = ieee80211_register_hw(hw);
2155 if (err < 0) {
2156 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_register_hw failed (%d)\n",
2157 err);
2158 goto failed_hw;
2159 }
2160
2161 wiphy_debug(hw->wiphy, "hwaddr %pM registered\n", hw->wiphy->perm_addr);
2162
2163 if (reg_alpha2)
2164 regulatory_hint(hw->wiphy, reg_alpha2);
2165
2166 data->debugfs = debugfs_create_dir("hwsim", hw->wiphy->debugfsdir);
2167 debugfs_create_file("ps", 0666, data->debugfs, data, &hwsim_fops_ps);
2168 debugfs_create_file("group", 0666, data->debugfs, data,
2169 &hwsim_fops_group);
2170 if (!data->use_chanctx)
2171 debugfs_create_file("dfs_simulate_radar", 0222,
2172 data->debugfs,
2173 data, &hwsim_simulate_radar);
2174
2175 tasklet_hrtimer_init(&data->beacon_timer,
2176 mac80211_hwsim_beacon,
2177 CLOCK_MONOTONIC_RAW, HRTIMER_MODE_ABS);
2178
2179 spin_lock_bh(&hwsim_radio_lock);
2180 list_add_tail(&data->list, &hwsim_radios);
2181 spin_unlock_bh(&hwsim_radio_lock);
2182
2183 return idx;
2184
2185 failed_hw:
2186 device_release_driver(data->dev);
2187 failed_bind:
2188 device_unregister(data->dev);
2189 failed_drvdata:
2190 ieee80211_free_hw(hw);
2191 failed:
2192 return err;
2193 }
2194
2195 static void mac80211_hwsim_destroy_radio(struct mac80211_hwsim_data *data)
2196 {
2197 debugfs_remove_recursive(data->debugfs);
2198 ieee80211_unregister_hw(data->hw);
2199 device_release_driver(data->dev);
2200 device_unregister(data->dev);
2201 ieee80211_free_hw(data->hw);
2202 }
2203
2204 static void mac80211_hwsim_free(void)
2205 {
2206 struct mac80211_hwsim_data *data;
2207
2208 spin_lock_bh(&hwsim_radio_lock);
2209 while ((data = list_first_entry_or_null(&hwsim_radios,
2210 struct mac80211_hwsim_data,
2211 list))) {
2212 list_del(&data->list);
2213 spin_unlock_bh(&hwsim_radio_lock);
2214 mac80211_hwsim_destroy_radio(data);
2215 spin_lock_bh(&hwsim_radio_lock);
2216 }
2217 spin_unlock_bh(&hwsim_radio_lock);
2218 class_destroy(hwsim_class);
2219 }
2220
2221 static const struct net_device_ops hwsim_netdev_ops = {
2222 .ndo_start_xmit = hwsim_mon_xmit,
2223 .ndo_change_mtu = eth_change_mtu,
2224 .ndo_set_mac_address = eth_mac_addr,
2225 .ndo_validate_addr = eth_validate_addr,
2226 };
2227
2228 static void hwsim_mon_setup(struct net_device *dev)
2229 {
2230 dev->netdev_ops = &hwsim_netdev_ops;
2231 dev->destructor = free_netdev;
2232 ether_setup(dev);
2233 dev->tx_queue_len = 0;
2234 dev->type = ARPHRD_IEEE80211_RADIOTAP;
2235 memset(dev->dev_addr, 0, ETH_ALEN);
2236 dev->dev_addr[0] = 0x12;
2237 }
2238
2239 static struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(const u8 *addr)
2240 {
2241 struct mac80211_hwsim_data *data;
2242 bool _found = false;
2243
2244 spin_lock_bh(&hwsim_radio_lock);
2245 list_for_each_entry(data, &hwsim_radios, list) {
2246 if (memcmp(data->addresses[1].addr, addr, ETH_ALEN) == 0) {
2247 _found = true;
2248 break;
2249 }
2250 }
2251 spin_unlock_bh(&hwsim_radio_lock);
2252
2253 if (!_found)
2254 return NULL;
2255
2256 return data;
2257 }
2258
2259 static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
2260 struct genl_info *info)
2261 {
2262
2263 struct ieee80211_hdr *hdr;
2264 struct mac80211_hwsim_data *data2;
2265 struct ieee80211_tx_info *txi;
2266 struct hwsim_tx_rate *tx_attempts;
2267 unsigned long ret_skb_ptr;
2268 struct sk_buff *skb, *tmp;
2269 const u8 *src;
2270 unsigned int hwsim_flags;
2271 int i;
2272 bool found = false;
2273
2274 if (info->snd_portid != wmediumd_portid)
2275 return -EINVAL;
2276
2277 if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
2278 !info->attrs[HWSIM_ATTR_FLAGS] ||
2279 !info->attrs[HWSIM_ATTR_COOKIE] ||
2280 !info->attrs[HWSIM_ATTR_SIGNAL] ||
2281 !info->attrs[HWSIM_ATTR_TX_INFO])
2282 goto out;
2283
2284 src = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
2285 hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
2286 ret_skb_ptr = nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
2287
2288 data2 = get_hwsim_data_ref_from_addr(src);
2289 if (!data2)
2290 goto out;
2291
2292 /* look for the skb matching the cookie passed back from user */
2293 skb_queue_walk_safe(&data2->pending, skb, tmp) {
2294 if ((unsigned long)skb == ret_skb_ptr) {
2295 skb_unlink(skb, &data2->pending);
2296 found = true;
2297 break;
2298 }
2299 }
2300
2301 /* not found */
2302 if (!found)
2303 goto out;
2304
2305 /* Tx info received because the frame was broadcasted on user space,
2306 so we get all the necessary info: tx attempts and skb control buff */
2307
2308 tx_attempts = (struct hwsim_tx_rate *)nla_data(
2309 info->attrs[HWSIM_ATTR_TX_INFO]);
2310
2311 /* now send back TX status */
2312 txi = IEEE80211_SKB_CB(skb);
2313
2314 ieee80211_tx_info_clear_status(txi);
2315
2316 for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
2317 txi->status.rates[i].idx = tx_attempts[i].idx;
2318 txi->status.rates[i].count = tx_attempts[i].count;
2319 /*txi->status.rates[i].flags = 0;*/
2320 }
2321
2322 txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
2323
2324 if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
2325 (hwsim_flags & HWSIM_TX_STAT_ACK)) {
2326 if (skb->len >= 16) {
2327 hdr = (struct ieee80211_hdr *) skb->data;
2328 mac80211_hwsim_monitor_ack(data2->channel,
2329 hdr->addr2);
2330 }
2331 txi->flags |= IEEE80211_TX_STAT_ACK;
2332 }
2333 ieee80211_tx_status_irqsafe(data2->hw, skb);
2334 return 0;
2335 out:
2336 return -EINVAL;
2337
2338 }
2339
2340 static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
2341 struct genl_info *info)
2342 {
2343
2344 struct mac80211_hwsim_data *data2;
2345 struct ieee80211_rx_status rx_status;
2346 const u8 *dst;
2347 int frame_data_len;
2348 void *frame_data;
2349 struct sk_buff *skb = NULL;
2350
2351 if (info->snd_portid != wmediumd_portid)
2352 return -EINVAL;
2353
2354 if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
2355 !info->attrs[HWSIM_ATTR_FRAME] ||
2356 !info->attrs[HWSIM_ATTR_RX_RATE] ||
2357 !info->attrs[HWSIM_ATTR_SIGNAL])
2358 goto out;
2359
2360 dst = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
2361 frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
2362 frame_data = (void *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
2363
2364 /* Allocate new skb here */
2365 skb = alloc_skb(frame_data_len, GFP_KERNEL);
2366 if (skb == NULL)
2367 goto err;
2368
2369 if (frame_data_len > IEEE80211_MAX_DATA_LEN)
2370 goto err;
2371
2372 /* Copy the data */
2373 memcpy(skb_put(skb, frame_data_len), frame_data, frame_data_len);
2374
2375 data2 = get_hwsim_data_ref_from_addr(dst);
2376 if (!data2)
2377 goto out;
2378
2379 /* check if radio is configured properly */
2380
2381 if (data2->idle || !data2->started)
2382 goto out;
2383
2384 /* A frame is received from user space */
2385 memset(&rx_status, 0, sizeof(rx_status));
2386 rx_status.freq = data2->channel->center_freq;
2387 rx_status.band = data2->channel->band;
2388 rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
2389 rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
2390
2391 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
2392 ieee80211_rx_irqsafe(data2->hw, skb);
2393
2394 return 0;
2395 err:
2396 printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
2397 goto out;
2398 out:
2399 dev_kfree_skb(skb);
2400 return -EINVAL;
2401 }
2402
2403 static int hwsim_register_received_nl(struct sk_buff *skb_2,
2404 struct genl_info *info)
2405 {
2406 struct mac80211_hwsim_data *data;
2407 int chans = 1;
2408
2409 spin_lock_bh(&hwsim_radio_lock);
2410 list_for_each_entry(data, &hwsim_radios, list)
2411 chans = max(chans, data->channels);
2412 spin_unlock_bh(&hwsim_radio_lock);
2413
2414 /* In the future we should revise the userspace API and allow it
2415 * to set a flag that it does support multi-channel, then we can
2416 * let this pass conditionally on the flag.
2417 * For current userspace, prohibit it since it won't work right.
2418 */
2419 if (chans > 1)
2420 return -EOPNOTSUPP;
2421
2422 if (wmediumd_portid)
2423 return -EBUSY;
2424
2425 wmediumd_portid = info->snd_portid;
2426
2427 printk(KERN_DEBUG "mac80211_hwsim: received a REGISTER, "
2428 "switching to wmediumd mode with pid %d\n", info->snd_portid);
2429
2430 return 0;
2431 }
2432
2433 static int hwsim_create_radio_nl(struct sk_buff *msg, struct genl_info *info)
2434 {
2435 unsigned int chans = channels;
2436 const char *alpha2 = NULL;
2437 const struct ieee80211_regdomain *regd = NULL;
2438 bool reg_strict = info->attrs[HWSIM_ATTR_REG_STRICT_REG];
2439 bool p2p_device = info->attrs[HWSIM_ATTR_SUPPORT_P2P_DEVICE];
2440 bool use_chanctx;
2441
2442 if (info->attrs[HWSIM_ATTR_CHANNELS])
2443 chans = nla_get_u32(info->attrs[HWSIM_ATTR_CHANNELS]);
2444
2445 if (info->attrs[HWSIM_ATTR_USE_CHANCTX])
2446 use_chanctx = true;
2447 else
2448 use_chanctx = (chans > 1);
2449
2450 if (info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2])
2451 alpha2 = nla_data(info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2]);
2452
2453 if (info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]) {
2454 u32 idx = nla_get_u32(info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]);
2455
2456 if (idx >= ARRAY_SIZE(hwsim_world_regdom_custom))
2457 return -EINVAL;
2458 regd = hwsim_world_regdom_custom[idx];
2459 }
2460
2461 return mac80211_hwsim_create_radio(chans, alpha2, regd, reg_strict,
2462 p2p_device, use_chanctx);
2463 }
2464
2465 static int hwsim_destroy_radio_nl(struct sk_buff *msg, struct genl_info *info)
2466 {
2467 struct mac80211_hwsim_data *data;
2468 int idx;
2469
2470 if (!info->attrs[HWSIM_ATTR_RADIO_ID])
2471 return -EINVAL;
2472 idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
2473
2474 spin_lock_bh(&hwsim_radio_lock);
2475 list_for_each_entry(data, &hwsim_radios, list) {
2476 if (data->idx != idx)
2477 continue;
2478 list_del(&data->list);
2479 spin_unlock_bh(&hwsim_radio_lock);
2480 mac80211_hwsim_destroy_radio(data);
2481 return 0;
2482 }
2483 spin_unlock_bh(&hwsim_radio_lock);
2484
2485 return -ENODEV;
2486 }
2487
2488 /* Generic Netlink operations array */
2489 static const struct genl_ops hwsim_ops[] = {
2490 {
2491 .cmd = HWSIM_CMD_REGISTER,
2492 .policy = hwsim_genl_policy,
2493 .doit = hwsim_register_received_nl,
2494 .flags = GENL_ADMIN_PERM,
2495 },
2496 {
2497 .cmd = HWSIM_CMD_FRAME,
2498 .policy = hwsim_genl_policy,
2499 .doit = hwsim_cloned_frame_received_nl,
2500 },
2501 {
2502 .cmd = HWSIM_CMD_TX_INFO_FRAME,
2503 .policy = hwsim_genl_policy,
2504 .doit = hwsim_tx_info_frame_received_nl,
2505 },
2506 {
2507 .cmd = HWSIM_CMD_CREATE_RADIO,
2508 .policy = hwsim_genl_policy,
2509 .doit = hwsim_create_radio_nl,
2510 .flags = GENL_ADMIN_PERM,
2511 },
2512 {
2513 .cmd = HWSIM_CMD_DESTROY_RADIO,
2514 .policy = hwsim_genl_policy,
2515 .doit = hwsim_destroy_radio_nl,
2516 .flags = GENL_ADMIN_PERM,
2517 },
2518 };
2519
2520 static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
2521 unsigned long state,
2522 void *_notify)
2523 {
2524 struct netlink_notify *notify = _notify;
2525
2526 if (state != NETLINK_URELEASE)
2527 return NOTIFY_DONE;
2528
2529 if (notify->portid == wmediumd_portid) {
2530 printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
2531 " socket, switching to perfect channel medium\n");
2532 wmediumd_portid = 0;
2533 }
2534 return NOTIFY_DONE;
2535
2536 }
2537
2538 static struct notifier_block hwsim_netlink_notifier = {
2539 .notifier_call = mac80211_hwsim_netlink_notify,
2540 };
2541
2542 static int hwsim_init_netlink(void)
2543 {
2544 int rc;
2545
2546 printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
2547
2548 rc = genl_register_family_with_ops(&hwsim_genl_family, hwsim_ops);
2549 if (rc)
2550 goto failure;
2551
2552 rc = netlink_register_notifier(&hwsim_netlink_notifier);
2553 if (rc)
2554 goto failure;
2555
2556 return 0;
2557
2558 failure:
2559 printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
2560 return -EINVAL;
2561 }
2562
2563 static void hwsim_exit_netlink(void)
2564 {
2565 /* unregister the notifier */
2566 netlink_unregister_notifier(&hwsim_netlink_notifier);
2567 /* unregister the family */
2568 genl_unregister_family(&hwsim_genl_family);
2569 }
2570
2571 static int __init init_mac80211_hwsim(void)
2572 {
2573 int i, err;
2574
2575 if (radios < 0 || radios > 100)
2576 return -EINVAL;
2577
2578 if (channels < 1)
2579 return -EINVAL;
2580
2581 mac80211_hwsim_mchan_ops = mac80211_hwsim_ops;
2582 mac80211_hwsim_mchan_ops.hw_scan = mac80211_hwsim_hw_scan;
2583 mac80211_hwsim_mchan_ops.cancel_hw_scan = mac80211_hwsim_cancel_hw_scan;
2584 mac80211_hwsim_mchan_ops.sw_scan_start = NULL;
2585 mac80211_hwsim_mchan_ops.sw_scan_complete = NULL;
2586 mac80211_hwsim_mchan_ops.remain_on_channel = mac80211_hwsim_roc;
2587 mac80211_hwsim_mchan_ops.cancel_remain_on_channel = mac80211_hwsim_croc;
2588 mac80211_hwsim_mchan_ops.add_chanctx = mac80211_hwsim_add_chanctx;
2589 mac80211_hwsim_mchan_ops.remove_chanctx = mac80211_hwsim_remove_chanctx;
2590 mac80211_hwsim_mchan_ops.change_chanctx = mac80211_hwsim_change_chanctx;
2591 mac80211_hwsim_mchan_ops.assign_vif_chanctx =
2592 mac80211_hwsim_assign_vif_chanctx;
2593 mac80211_hwsim_mchan_ops.unassign_vif_chanctx =
2594 mac80211_hwsim_unassign_vif_chanctx;
2595
2596 spin_lock_init(&hwsim_radio_lock);
2597 INIT_LIST_HEAD(&hwsim_radios);
2598
2599 err = platform_driver_register(&mac80211_hwsim_driver);
2600 if (err)
2601 return err;
2602
2603 hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
2604 if (IS_ERR(hwsim_class)) {
2605 err = PTR_ERR(hwsim_class);
2606 goto out_unregister_driver;
2607 }
2608
2609 for (i = 0; i < radios; i++) {
2610 const char *reg_alpha2 = NULL;
2611 const struct ieee80211_regdomain *regd = NULL;
2612 bool reg_strict = false;
2613
2614 switch (regtest) {
2615 case HWSIM_REGTEST_DIFF_COUNTRY:
2616 if (i < ARRAY_SIZE(hwsim_alpha2s))
2617 reg_alpha2 = hwsim_alpha2s[i];
2618 break;
2619 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
2620 if (!i)
2621 reg_alpha2 = hwsim_alpha2s[0];
2622 break;
2623 case HWSIM_REGTEST_STRICT_ALL:
2624 reg_strict = true;
2625 case HWSIM_REGTEST_DRIVER_REG_ALL:
2626 reg_alpha2 = hwsim_alpha2s[0];
2627 break;
2628 case HWSIM_REGTEST_WORLD_ROAM:
2629 if (i == 0)
2630 regd = &hwsim_world_regdom_custom_01;
2631 break;
2632 case HWSIM_REGTEST_CUSTOM_WORLD:
2633 regd = &hwsim_world_regdom_custom_01;
2634 break;
2635 case HWSIM_REGTEST_CUSTOM_WORLD_2:
2636 if (i == 0)
2637 regd = &hwsim_world_regdom_custom_01;
2638 else if (i == 1)
2639 regd = &hwsim_world_regdom_custom_02;
2640 break;
2641 case HWSIM_REGTEST_STRICT_FOLLOW:
2642 if (i == 0) {
2643 reg_strict = true;
2644 reg_alpha2 = hwsim_alpha2s[0];
2645 }
2646 break;
2647 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
2648 if (i == 0) {
2649 reg_strict = true;
2650 reg_alpha2 = hwsim_alpha2s[0];
2651 } else if (i == 1) {
2652 reg_alpha2 = hwsim_alpha2s[1];
2653 }
2654 break;
2655 case HWSIM_REGTEST_ALL:
2656 switch (i) {
2657 case 0:
2658 regd = &hwsim_world_regdom_custom_01;
2659 break;
2660 case 1:
2661 regd = &hwsim_world_regdom_custom_02;
2662 break;
2663 case 2:
2664 reg_alpha2 = hwsim_alpha2s[0];
2665 break;
2666 case 3:
2667 reg_alpha2 = hwsim_alpha2s[1];
2668 break;
2669 case 4:
2670 reg_strict = true;
2671 reg_alpha2 = hwsim_alpha2s[2];
2672 break;
2673 }
2674 break;
2675 default:
2676 break;
2677 }
2678
2679 err = mac80211_hwsim_create_radio(channels, reg_alpha2,
2680 regd, reg_strict,
2681 support_p2p_device,
2682 channels > 1);
2683 if (err < 0)
2684 goto out_free_radios;
2685 }
2686
2687 hwsim_mon = alloc_netdev(0, "hwsim%d", NET_NAME_UNKNOWN,
2688 hwsim_mon_setup);
2689 if (hwsim_mon == NULL) {
2690 err = -ENOMEM;
2691 goto out_free_radios;
2692 }
2693
2694 rtnl_lock();
2695 err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
2696 if (err < 0) {
2697 rtnl_unlock();
2698 goto out_free_radios;
2699 }
2700
2701 err = register_netdevice(hwsim_mon);
2702 if (err < 0) {
2703 rtnl_unlock();
2704 goto out_free_mon;
2705 }
2706 rtnl_unlock();
2707
2708 err = hwsim_init_netlink();
2709 if (err < 0)
2710 goto out_free_mon;
2711
2712 return 0;
2713
2714 out_free_mon:
2715 free_netdev(hwsim_mon);
2716 out_free_radios:
2717 mac80211_hwsim_free();
2718 out_unregister_driver:
2719 platform_driver_unregister(&mac80211_hwsim_driver);
2720 return err;
2721 }
2722 module_init(init_mac80211_hwsim);
2723
2724 static void __exit exit_mac80211_hwsim(void)
2725 {
2726 printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
2727
2728 hwsim_exit_netlink();
2729
2730 mac80211_hwsim_free();
2731 unregister_netdev(hwsim_mon);
2732 platform_driver_unregister(&mac80211_hwsim_driver);
2733 }
2734 module_exit(exit_mac80211_hwsim);
Linux with added FPC-III support