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 * Copyright (c) 2016 - 2017 Intel Deutschland GmbH
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
10 */
11
12 /*
13 * TODO:
14 * - Add TSF sync and fix IBSS beacon transmission by adding
15 * competition for "air time" at TBTT
16 * - RX filtering based on filter configuration (data->rx_filter)
17 */
18
19 #include <linux/list.h>
20 #include <linux/slab.h>
21 #include <linux/spinlock.h>
22 #include <net/dst.h>
23 #include <net/xfrm.h>
24 #include <net/mac80211.h>
25 #include <net/ieee80211_radiotap.h>
26 #include <linux/if_arp.h>
27 #include <linux/rtnetlink.h>
28 #include <linux/etherdevice.h>
29 #include <linux/platform_device.h>
30 #include <linux/debugfs.h>
31 #include <linux/module.h>
32 #include <linux/ktime.h>
33 #include <net/genetlink.h>
34 #include <net/net_namespace.h>
35 #include <net/netns/generic.h>
36 #include <linux/rhashtable.h>
37 #include <linux/nospec.h>
38 #include "mac80211_hwsim.h"
39
40 #define WARN_QUEUE 100
41 #define MAX_QUEUE 200
42
43 MODULE_AUTHOR("Jouni Malinen");
44 MODULE_DESCRIPTION("Software simulator of 802.11 radio(s) for mac80211");
45 MODULE_LICENSE("GPL");
46
47 static int radios = 2;
48 module_param(radios, int, 0444);
49 MODULE_PARM_DESC(radios, "Number of simulated radios");
50
51 static int channels = 1;
52 module_param(channels, int, 0444);
53 MODULE_PARM_DESC(channels, "Number of concurrent channels");
54
55 static bool paged_rx = false;
56 module_param(paged_rx, bool, 0644);
57 MODULE_PARM_DESC(paged_rx, "Use paged SKBs for RX instead of linear ones");
58
59 static bool rctbl = false;
60 module_param(rctbl, bool, 0444);
61 MODULE_PARM_DESC(rctbl, "Handle rate control table");
62
63 static bool support_p2p_device = true;
64 module_param(support_p2p_device, bool, 0444);
65 MODULE_PARM_DESC(support_p2p_device, "Support P2P-Device interface type");
66
67 /**
68 * enum hwsim_regtest - the type of regulatory tests we offer
69 *
70 * These are the different values you can use for the regtest
71 * module parameter. This is useful to help test world roaming
72 * and the driver regulatory_hint() call and combinations of these.
73 * If you want to do specific alpha2 regulatory domain tests simply
74 * use the userspace regulatory request as that will be respected as
75 * well without the need of this module parameter. This is designed
76 * only for testing the driver regulatory request, world roaming
77 * and all possible combinations.
78 *
79 * @HWSIM_REGTEST_DISABLED: No regulatory tests are performed,
80 * this is the default value.
81 * @HWSIM_REGTEST_DRIVER_REG_FOLLOW: Used for testing the driver regulatory
82 * hint, only one driver regulatory hint will be sent as such the
83 * secondary radios are expected to follow.
84 * @HWSIM_REGTEST_DRIVER_REG_ALL: Used for testing the driver regulatory
85 * request with all radios reporting the same regulatory domain.
86 * @HWSIM_REGTEST_DIFF_COUNTRY: Used for testing the drivers calling
87 * different regulatory domains requests. Expected behaviour is for
88 * an intersection to occur but each device will still use their
89 * respective regulatory requested domains. Subsequent radios will
90 * use the resulting intersection.
91 * @HWSIM_REGTEST_WORLD_ROAM: Used for testing the world roaming. We accomplish
92 * this by using a custom beacon-capable regulatory domain for the first
93 * radio. All other device world roam.
94 * @HWSIM_REGTEST_CUSTOM_WORLD: Used for testing the custom world regulatory
95 * domain requests. All radios will adhere to this custom world regulatory
96 * domain.
97 * @HWSIM_REGTEST_CUSTOM_WORLD_2: Used for testing 2 custom world regulatory
98 * domain requests. The first radio will adhere to the first custom world
99 * regulatory domain, the second one to the second custom world regulatory
100 * domain. All other devices will world roam.
101 * @HWSIM_REGTEST_STRICT_FOLLOW_: Used for testing strict regulatory domain
102 * settings, only the first radio will send a regulatory domain request
103 * and use strict settings. The rest of the radios are expected to follow.
104 * @HWSIM_REGTEST_STRICT_ALL: Used for testing strict regulatory domain
105 * settings. All radios will adhere to this.
106 * @HWSIM_REGTEST_STRICT_AND_DRIVER_REG: Used for testing strict regulatory
107 * domain settings, combined with secondary driver regulatory domain
108 * settings. The first radio will get a strict regulatory domain setting
109 * using the first driver regulatory request and the second radio will use
110 * non-strict settings using the second driver regulatory request. All
111 * other devices should follow the intersection created between the
112 * first two.
113 * @HWSIM_REGTEST_ALL: Used for testing every possible mix. You will need
114 * at least 6 radios for a complete test. We will test in this order:
115 * 1 - driver custom world regulatory domain
116 * 2 - second custom world regulatory domain
117 * 3 - first driver regulatory domain request
118 * 4 - second driver regulatory domain request
119 * 5 - strict regulatory domain settings using the third driver regulatory
120 * domain request
121 * 6 and on - should follow the intersection of the 3rd, 4rth and 5th radio
122 * regulatory requests.
123 */
124 enum hwsim_regtest {
125 HWSIM_REGTEST_DISABLED = 0,
126 HWSIM_REGTEST_DRIVER_REG_FOLLOW = 1,
127 HWSIM_REGTEST_DRIVER_REG_ALL = 2,
128 HWSIM_REGTEST_DIFF_COUNTRY = 3,
129 HWSIM_REGTEST_WORLD_ROAM = 4,
130 HWSIM_REGTEST_CUSTOM_WORLD = 5,
131 HWSIM_REGTEST_CUSTOM_WORLD_2 = 6,
132 HWSIM_REGTEST_STRICT_FOLLOW = 7,
133 HWSIM_REGTEST_STRICT_ALL = 8,
134 HWSIM_REGTEST_STRICT_AND_DRIVER_REG = 9,
135 HWSIM_REGTEST_ALL = 10,
136 };
137
138 /* Set to one of the HWSIM_REGTEST_* values above */
139 static int regtest = HWSIM_REGTEST_DISABLED;
140 module_param(regtest, int, 0444);
141 MODULE_PARM_DESC(regtest, "The type of regulatory test we want to run");
142
143 static const char *hwsim_alpha2s[] = {
144 "FI",
145 "AL",
146 "US",
147 "DE",
148 "JP",
149 "AL",
150 };
151
152 static const struct ieee80211_regdomain hwsim_world_regdom_custom_01 = {
153 .n_reg_rules = 4,
154 .alpha2 = "99",
155 .reg_rules = {
156 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
157 REG_RULE(2484-10, 2484+10, 40, 0, 20, 0),
158 REG_RULE(5150-10, 5240+10, 40, 0, 30, 0),
159 REG_RULE(5745-10, 5825+10, 40, 0, 30, 0),
160 }
161 };
162
163 static const struct ieee80211_regdomain hwsim_world_regdom_custom_02 = {
164 .n_reg_rules = 2,
165 .alpha2 = "99",
166 .reg_rules = {
167 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
168 REG_RULE(5725-10, 5850+10, 40, 0, 30,
169 NL80211_RRF_NO_IR),
170 }
171 };
172
173 static const struct ieee80211_regdomain *hwsim_world_regdom_custom[] = {
174 &hwsim_world_regdom_custom_01,
175 &hwsim_world_regdom_custom_02,
176 };
177
178 struct hwsim_vif_priv {
179 u32 magic;
180 u8 bssid[ETH_ALEN];
181 bool assoc;
182 bool bcn_en;
183 u16 aid;
184 };
185
186 #define HWSIM_VIF_MAGIC 0x69537748
187
hwsim_check_magic(struct ieee80211_vif * vif)188 static inline void hwsim_check_magic(struct ieee80211_vif *vif)
189 {
190 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
191 WARN(vp->magic != HWSIM_VIF_MAGIC,
192 "Invalid VIF (%p) magic %#x, %pM, %d/%d\n",
193 vif, vp->magic, vif->addr, vif->type, vif->p2p);
194 }
195
hwsim_set_magic(struct ieee80211_vif * vif)196 static inline void hwsim_set_magic(struct ieee80211_vif *vif)
197 {
198 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
199 vp->magic = HWSIM_VIF_MAGIC;
200 }
201
hwsim_clear_magic(struct ieee80211_vif * vif)202 static inline void hwsim_clear_magic(struct ieee80211_vif *vif)
203 {
204 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
205 vp->magic = 0;
206 }
207
208 struct hwsim_sta_priv {
209 u32 magic;
210 };
211
212 #define HWSIM_STA_MAGIC 0x6d537749
213
hwsim_check_sta_magic(struct ieee80211_sta * sta)214 static inline void hwsim_check_sta_magic(struct ieee80211_sta *sta)
215 {
216 struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
217 WARN_ON(sp->magic != HWSIM_STA_MAGIC);
218 }
219
hwsim_set_sta_magic(struct ieee80211_sta * sta)220 static inline void hwsim_set_sta_magic(struct ieee80211_sta *sta)
221 {
222 struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
223 sp->magic = HWSIM_STA_MAGIC;
224 }
225
hwsim_clear_sta_magic(struct ieee80211_sta * sta)226 static inline void hwsim_clear_sta_magic(struct ieee80211_sta *sta)
227 {
228 struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
229 sp->magic = 0;
230 }
231
232 struct hwsim_chanctx_priv {
233 u32 magic;
234 };
235
236 #define HWSIM_CHANCTX_MAGIC 0x6d53774a
237
hwsim_check_chanctx_magic(struct ieee80211_chanctx_conf * c)238 static inline void hwsim_check_chanctx_magic(struct ieee80211_chanctx_conf *c)
239 {
240 struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
241 WARN_ON(cp->magic != HWSIM_CHANCTX_MAGIC);
242 }
243
hwsim_set_chanctx_magic(struct ieee80211_chanctx_conf * c)244 static inline void hwsim_set_chanctx_magic(struct ieee80211_chanctx_conf *c)
245 {
246 struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
247 cp->magic = HWSIM_CHANCTX_MAGIC;
248 }
249
hwsim_clear_chanctx_magic(struct ieee80211_chanctx_conf * c)250 static inline void hwsim_clear_chanctx_magic(struct ieee80211_chanctx_conf *c)
251 {
252 struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
253 cp->magic = 0;
254 }
255
256 static unsigned int hwsim_net_id;
257
258 static DEFINE_IDA(hwsim_netgroup_ida);
259
260 struct hwsim_net {
261 int netgroup;
262 u32 wmediumd;
263 };
264
hwsim_net_get_netgroup(struct net * net)265 static inline int hwsim_net_get_netgroup(struct net *net)
266 {
267 struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
268
269 return hwsim_net->netgroup;
270 }
271
hwsim_net_set_netgroup(struct net * net)272 static inline int hwsim_net_set_netgroup(struct net *net)
273 {
274 struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
275
276 hwsim_net->netgroup = ida_simple_get(&hwsim_netgroup_ida,
277 0, 0, GFP_KERNEL);
278 return hwsim_net->netgroup >= 0 ? 0 : -ENOMEM;
279 }
280
hwsim_net_get_wmediumd(struct net * net)281 static inline u32 hwsim_net_get_wmediumd(struct net *net)
282 {
283 struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
284
285 return hwsim_net->wmediumd;
286 }
287
hwsim_net_set_wmediumd(struct net * net,u32 portid)288 static inline void hwsim_net_set_wmediumd(struct net *net, u32 portid)
289 {
290 struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
291
292 hwsim_net->wmediumd = portid;
293 }
294
295 static struct class *hwsim_class;
296
297 static struct net_device *hwsim_mon; /* global monitor netdev */
298
299 #define CHAN2G(_freq) { \
300 .band = NL80211_BAND_2GHZ, \
301 .center_freq = (_freq), \
302 .hw_value = (_freq), \
303 .max_power = 20, \
304 }
305
306 #define CHAN5G(_freq) { \
307 .band = NL80211_BAND_5GHZ, \
308 .center_freq = (_freq), \
309 .hw_value = (_freq), \
310 .max_power = 20, \
311 }
312
313 static const struct ieee80211_channel hwsim_channels_2ghz[] = {
314 CHAN2G(2412), /* Channel 1 */
315 CHAN2G(2417), /* Channel 2 */
316 CHAN2G(2422), /* Channel 3 */
317 CHAN2G(2427), /* Channel 4 */
318 CHAN2G(2432), /* Channel 5 */
319 CHAN2G(2437), /* Channel 6 */
320 CHAN2G(2442), /* Channel 7 */
321 CHAN2G(2447), /* Channel 8 */
322 CHAN2G(2452), /* Channel 9 */
323 CHAN2G(2457), /* Channel 10 */
324 CHAN2G(2462), /* Channel 11 */
325 CHAN2G(2467), /* Channel 12 */
326 CHAN2G(2472), /* Channel 13 */
327 CHAN2G(2484), /* Channel 14 */
328 };
329
330 static const struct ieee80211_channel hwsim_channels_5ghz[] = {
331 CHAN5G(5180), /* Channel 36 */
332 CHAN5G(5200), /* Channel 40 */
333 CHAN5G(5220), /* Channel 44 */
334 CHAN5G(5240), /* Channel 48 */
335
336 CHAN5G(5260), /* Channel 52 */
337 CHAN5G(5280), /* Channel 56 */
338 CHAN5G(5300), /* Channel 60 */
339 CHAN5G(5320), /* Channel 64 */
340
341 CHAN5G(5500), /* Channel 100 */
342 CHAN5G(5520), /* Channel 104 */
343 CHAN5G(5540), /* Channel 108 */
344 CHAN5G(5560), /* Channel 112 */
345 CHAN5G(5580), /* Channel 116 */
346 CHAN5G(5600), /* Channel 120 */
347 CHAN5G(5620), /* Channel 124 */
348 CHAN5G(5640), /* Channel 128 */
349 CHAN5G(5660), /* Channel 132 */
350 CHAN5G(5680), /* Channel 136 */
351 CHAN5G(5700), /* Channel 140 */
352
353 CHAN5G(5745), /* Channel 149 */
354 CHAN5G(5765), /* Channel 153 */
355 CHAN5G(5785), /* Channel 157 */
356 CHAN5G(5805), /* Channel 161 */
357 CHAN5G(5825), /* Channel 165 */
358 CHAN5G(5845), /* Channel 169 */
359 };
360
361 static const struct ieee80211_rate hwsim_rates[] = {
362 { .bitrate = 10 },
363 { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
364 { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
365 { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
366 { .bitrate = 60 },
367 { .bitrate = 90 },
368 { .bitrate = 120 },
369 { .bitrate = 180 },
370 { .bitrate = 240 },
371 { .bitrate = 360 },
372 { .bitrate = 480 },
373 { .bitrate = 540 }
374 };
375
376 #define OUI_QCA 0x001374
377 #define QCA_NL80211_SUBCMD_TEST 1
378 enum qca_nl80211_vendor_subcmds {
379 QCA_WLAN_VENDOR_ATTR_TEST = 8,
380 QCA_WLAN_VENDOR_ATTR_MAX = QCA_WLAN_VENDOR_ATTR_TEST
381 };
382
383 static const struct nla_policy
384 hwsim_vendor_test_policy[QCA_WLAN_VENDOR_ATTR_MAX + 1] = {
385 [QCA_WLAN_VENDOR_ATTR_MAX] = { .type = NLA_U32 },
386 };
387
mac80211_hwsim_vendor_cmd_test(struct wiphy * wiphy,struct wireless_dev * wdev,const void * data,int data_len)388 static int mac80211_hwsim_vendor_cmd_test(struct wiphy *wiphy,
389 struct wireless_dev *wdev,
390 const void *data, int data_len)
391 {
392 struct sk_buff *skb;
393 struct nlattr *tb[QCA_WLAN_VENDOR_ATTR_MAX + 1];
394 int err;
395 u32 val;
396
397 err = nla_parse(tb, QCA_WLAN_VENDOR_ATTR_MAX, data, data_len,
398 hwsim_vendor_test_policy, NULL);
399 if (err)
400 return err;
401 if (!tb[QCA_WLAN_VENDOR_ATTR_TEST])
402 return -EINVAL;
403 val = nla_get_u32(tb[QCA_WLAN_VENDOR_ATTR_TEST]);
404 wiphy_dbg(wiphy, "%s: test=%u\n", __func__, val);
405
406 /* Send a vendor event as a test. Note that this would not normally be
407 * done within a command handler, but rather, based on some other
408 * trigger. For simplicity, this command is used to trigger the event
409 * here.
410 *
411 * event_idx = 0 (index in mac80211_hwsim_vendor_commands)
412 */
413 skb = cfg80211_vendor_event_alloc(wiphy, wdev, 100, 0, GFP_KERNEL);
414 if (skb) {
415 /* skb_put() or nla_put() will fill up data within
416 * NL80211_ATTR_VENDOR_DATA.
417 */
418
419 /* Add vendor data */
420 nla_put_u32(skb, QCA_WLAN_VENDOR_ATTR_TEST, val + 1);
421
422 /* Send the event - this will call nla_nest_end() */
423 cfg80211_vendor_event(skb, GFP_KERNEL);
424 }
425
426 /* Send a response to the command */
427 skb = cfg80211_vendor_cmd_alloc_reply_skb(wiphy, 10);
428 if (!skb)
429 return -ENOMEM;
430
431 /* skb_put() or nla_put() will fill up data within
432 * NL80211_ATTR_VENDOR_DATA
433 */
434 nla_put_u32(skb, QCA_WLAN_VENDOR_ATTR_TEST, val + 2);
435
436 return cfg80211_vendor_cmd_reply(skb);
437 }
438
439 static struct wiphy_vendor_command mac80211_hwsim_vendor_commands[] = {
440 {
441 .info = { .vendor_id = OUI_QCA,
442 .subcmd = QCA_NL80211_SUBCMD_TEST },
443 .flags = WIPHY_VENDOR_CMD_NEED_NETDEV,
444 .doit = mac80211_hwsim_vendor_cmd_test,
445 }
446 };
447
448 /* Advertise support vendor specific events */
449 static const struct nl80211_vendor_cmd_info mac80211_hwsim_vendor_events[] = {
450 { .vendor_id = OUI_QCA, .subcmd = 1 },
451 };
452
453 static const struct ieee80211_iface_limit hwsim_if_limits[] = {
454 { .max = 1, .types = BIT(NL80211_IFTYPE_ADHOC) },
455 { .max = 2048, .types = BIT(NL80211_IFTYPE_STATION) |
456 BIT(NL80211_IFTYPE_P2P_CLIENT) |
457 #ifdef CONFIG_MAC80211_MESH
458 BIT(NL80211_IFTYPE_MESH_POINT) |
459 #endif
460 BIT(NL80211_IFTYPE_AP) |
461 BIT(NL80211_IFTYPE_P2P_GO) },
462 /* must be last, see hwsim_if_comb */
463 { .max = 1, .types = BIT(NL80211_IFTYPE_P2P_DEVICE) }
464 };
465
466 static const struct ieee80211_iface_combination hwsim_if_comb[] = {
467 {
468 .limits = hwsim_if_limits,
469 /* remove the last entry which is P2P_DEVICE */
470 .n_limits = ARRAY_SIZE(hwsim_if_limits) - 1,
471 .max_interfaces = 2048,
472 .num_different_channels = 1,
473 .radar_detect_widths = BIT(NL80211_CHAN_WIDTH_20_NOHT) |
474 BIT(NL80211_CHAN_WIDTH_20) |
475 BIT(NL80211_CHAN_WIDTH_40) |
476 BIT(NL80211_CHAN_WIDTH_80) |
477 BIT(NL80211_CHAN_WIDTH_160),
478 },
479 };
480
481 static const struct ieee80211_iface_combination hwsim_if_comb_p2p_dev[] = {
482 {
483 .limits = hwsim_if_limits,
484 .n_limits = ARRAY_SIZE(hwsim_if_limits),
485 .max_interfaces = 2048,
486 .num_different_channels = 1,
487 .radar_detect_widths = BIT(NL80211_CHAN_WIDTH_20_NOHT) |
488 BIT(NL80211_CHAN_WIDTH_20) |
489 BIT(NL80211_CHAN_WIDTH_40) |
490 BIT(NL80211_CHAN_WIDTH_80) |
491 BIT(NL80211_CHAN_WIDTH_160),
492 },
493 };
494
495 static spinlock_t hwsim_radio_lock;
496 static LIST_HEAD(hwsim_radios);
497 static struct workqueue_struct *hwsim_wq;
498 static struct rhashtable hwsim_radios_rht;
499 static int hwsim_radio_idx;
500 static int hwsim_radios_generation = 1;
501
502 static struct platform_driver mac80211_hwsim_driver = {
503 .driver = {
504 .name = "mac80211_hwsim",
505 },
506 };
507
508 struct mac80211_hwsim_data {
509 struct list_head list;
510 struct rhash_head rht;
511 struct ieee80211_hw *hw;
512 struct device *dev;
513 struct ieee80211_supported_band bands[NUM_NL80211_BANDS];
514 struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)];
515 struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)];
516 struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
517 struct ieee80211_iface_combination if_combination;
518
519 struct mac_address addresses[2];
520 int channels, idx;
521 bool use_chanctx;
522 bool destroy_on_close;
523 u32 portid;
524 char alpha2[2];
525 const struct ieee80211_regdomain *regd;
526
527 struct ieee80211_channel *tmp_chan;
528 struct ieee80211_channel *roc_chan;
529 u32 roc_duration;
530 struct delayed_work roc_start;
531 struct delayed_work roc_done;
532 struct delayed_work hw_scan;
533 struct cfg80211_scan_request *hw_scan_request;
534 struct ieee80211_vif *hw_scan_vif;
535 int scan_chan_idx;
536 u8 scan_addr[ETH_ALEN];
537 struct {
538 struct ieee80211_channel *channel;
539 unsigned long next_start, start, end;
540 } survey_data[ARRAY_SIZE(hwsim_channels_2ghz) +
541 ARRAY_SIZE(hwsim_channels_5ghz)];
542
543 struct ieee80211_channel *channel;
544 u64 beacon_int /* beacon interval in us */;
545 unsigned int rx_filter;
546 bool started, idle, scanning;
547 struct mutex mutex;
548 struct tasklet_hrtimer beacon_timer;
549 enum ps_mode {
550 PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
551 } ps;
552 bool ps_poll_pending;
553 struct dentry *debugfs;
554
555 uintptr_t pending_cookie;
556 struct sk_buff_head pending; /* packets pending */
557 /*
558 * Only radios in the same group can communicate together (the
559 * channel has to match too). Each bit represents a group. A
560 * radio can be in more than one group.
561 */
562 u64 group;
563
564 /* group shared by radios created in the same netns */
565 int netgroup;
566 /* wmediumd portid responsible for netgroup of this radio */
567 u32 wmediumd;
568
569 /* difference between this hw's clock and the real clock, in usecs */
570 s64 tsf_offset;
571 s64 bcn_delta;
572 /* absolute beacon transmission time. Used to cover up "tx" delay. */
573 u64 abs_bcn_ts;
574
575 /* Stats */
576 u64 tx_pkts;
577 u64 rx_pkts;
578 u64 tx_bytes;
579 u64 rx_bytes;
580 u64 tx_dropped;
581 u64 tx_failed;
582 };
583
584 static const struct rhashtable_params hwsim_rht_params = {
585 .nelem_hint = 2,
586 .automatic_shrinking = true,
587 .key_len = ETH_ALEN,
588 .key_offset = offsetof(struct mac80211_hwsim_data, addresses[1]),
589 .head_offset = offsetof(struct mac80211_hwsim_data, rht),
590 };
591
592 struct hwsim_radiotap_hdr {
593 struct ieee80211_radiotap_header hdr;
594 __le64 rt_tsft;
595 u8 rt_flags;
596 u8 rt_rate;
597 __le16 rt_channel;
598 __le16 rt_chbitmask;
599 } __packed;
600
601 struct hwsim_radiotap_ack_hdr {
602 struct ieee80211_radiotap_header hdr;
603 u8 rt_flags;
604 u8 pad;
605 __le16 rt_channel;
606 __le16 rt_chbitmask;
607 } __packed;
608
609 /* MAC80211_HWSIM netlink family */
610 static struct genl_family hwsim_genl_family;
611
612 enum hwsim_multicast_groups {
613 HWSIM_MCGRP_CONFIG,
614 };
615
616 static const struct genl_multicast_group hwsim_mcgrps[] = {
617 [HWSIM_MCGRP_CONFIG] = { .name = "config", },
618 };
619
620 /* MAC80211_HWSIM netlink policy */
621
622 static const struct nla_policy hwsim_genl_policy[HWSIM_ATTR_MAX + 1] = {
623 [HWSIM_ATTR_ADDR_RECEIVER] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
624 [HWSIM_ATTR_ADDR_TRANSMITTER] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
625 [HWSIM_ATTR_FRAME] = { .type = NLA_BINARY,
626 .len = IEEE80211_MAX_DATA_LEN },
627 [HWSIM_ATTR_FLAGS] = { .type = NLA_U32 },
628 [HWSIM_ATTR_RX_RATE] = { .type = NLA_U32 },
629 [HWSIM_ATTR_SIGNAL] = { .type = NLA_U32 },
630 [HWSIM_ATTR_TX_INFO] = { .type = NLA_UNSPEC,
631 .len = IEEE80211_TX_MAX_RATES *
632 sizeof(struct hwsim_tx_rate)},
633 [HWSIM_ATTR_COOKIE] = { .type = NLA_U64 },
634 [HWSIM_ATTR_CHANNELS] = { .type = NLA_U32 },
635 [HWSIM_ATTR_RADIO_ID] = { .type = NLA_U32 },
636 [HWSIM_ATTR_REG_HINT_ALPHA2] = { .type = NLA_STRING, .len = 2 },
637 [HWSIM_ATTR_REG_CUSTOM_REG] = { .type = NLA_U32 },
638 [HWSIM_ATTR_REG_STRICT_REG] = { .type = NLA_FLAG },
639 [HWSIM_ATTR_SUPPORT_P2P_DEVICE] = { .type = NLA_FLAG },
640 [HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE] = { .type = NLA_FLAG },
641 [HWSIM_ATTR_RADIO_NAME] = { .type = NLA_STRING },
642 [HWSIM_ATTR_NO_VIF] = { .type = NLA_FLAG },
643 [HWSIM_ATTR_FREQ] = { .type = NLA_U32 },
644 [HWSIM_ATTR_PERM_ADDR] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
645 };
646
647 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
648 struct sk_buff *skb,
649 struct ieee80211_channel *chan);
650
651 /* sysfs attributes */
hwsim_send_ps_poll(void * dat,u8 * mac,struct ieee80211_vif * vif)652 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
653 {
654 struct mac80211_hwsim_data *data = dat;
655 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
656 struct sk_buff *skb;
657 struct ieee80211_pspoll *pspoll;
658
659 if (!vp->assoc)
660 return;
661
662 wiphy_dbg(data->hw->wiphy,
663 "%s: send PS-Poll to %pM for aid %d\n",
664 __func__, vp->bssid, vp->aid);
665
666 skb = dev_alloc_skb(sizeof(*pspoll));
667 if (!skb)
668 return;
669 pspoll = skb_put(skb, sizeof(*pspoll));
670 pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
671 IEEE80211_STYPE_PSPOLL |
672 IEEE80211_FCTL_PM);
673 pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
674 memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
675 memcpy(pspoll->ta, mac, ETH_ALEN);
676
677 rcu_read_lock();
678 mac80211_hwsim_tx_frame(data->hw, skb,
679 rcu_dereference(vif->chanctx_conf)->def.chan);
680 rcu_read_unlock();
681 }
682
hwsim_send_nullfunc(struct mac80211_hwsim_data * data,u8 * mac,struct ieee80211_vif * vif,int ps)683 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
684 struct ieee80211_vif *vif, int ps)
685 {
686 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
687 struct sk_buff *skb;
688 struct ieee80211_hdr *hdr;
689
690 if (!vp->assoc)
691 return;
692
693 wiphy_dbg(data->hw->wiphy,
694 "%s: send data::nullfunc to %pM ps=%d\n",
695 __func__, vp->bssid, ps);
696
697 skb = dev_alloc_skb(sizeof(*hdr));
698 if (!skb)
699 return;
700 hdr = skb_put(skb, sizeof(*hdr) - ETH_ALEN);
701 hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
702 IEEE80211_STYPE_NULLFUNC |
703 IEEE80211_FCTL_TODS |
704 (ps ? IEEE80211_FCTL_PM : 0));
705 hdr->duration_id = cpu_to_le16(0);
706 memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
707 memcpy(hdr->addr2, mac, ETH_ALEN);
708 memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
709
710 rcu_read_lock();
711 mac80211_hwsim_tx_frame(data->hw, skb,
712 rcu_dereference(vif->chanctx_conf)->def.chan);
713 rcu_read_unlock();
714 }
715
716
hwsim_send_nullfunc_ps(void * dat,u8 * mac,struct ieee80211_vif * vif)717 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
718 struct ieee80211_vif *vif)
719 {
720 struct mac80211_hwsim_data *data = dat;
721 hwsim_send_nullfunc(data, mac, vif, 1);
722 }
723
hwsim_send_nullfunc_no_ps(void * dat,u8 * mac,struct ieee80211_vif * vif)724 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
725 struct ieee80211_vif *vif)
726 {
727 struct mac80211_hwsim_data *data = dat;
728 hwsim_send_nullfunc(data, mac, vif, 0);
729 }
730
hwsim_fops_ps_read(void * dat,u64 * val)731 static int hwsim_fops_ps_read(void *dat, u64 *val)
732 {
733 struct mac80211_hwsim_data *data = dat;
734 *val = data->ps;
735 return 0;
736 }
737
hwsim_fops_ps_write(void * dat,u64 val)738 static int hwsim_fops_ps_write(void *dat, u64 val)
739 {
740 struct mac80211_hwsim_data *data = dat;
741 enum ps_mode old_ps;
742
743 if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
744 val != PS_MANUAL_POLL)
745 return -EINVAL;
746
747 if (val == PS_MANUAL_POLL) {
748 if (data->ps != PS_ENABLED)
749 return -EINVAL;
750 local_bh_disable();
751 ieee80211_iterate_active_interfaces_atomic(
752 data->hw, IEEE80211_IFACE_ITER_NORMAL,
753 hwsim_send_ps_poll, data);
754 local_bh_enable();
755 return 0;
756 }
757 old_ps = data->ps;
758 data->ps = val;
759
760 local_bh_disable();
761 if (old_ps == PS_DISABLED && val != PS_DISABLED) {
762 ieee80211_iterate_active_interfaces_atomic(
763 data->hw, IEEE80211_IFACE_ITER_NORMAL,
764 hwsim_send_nullfunc_ps, data);
765 } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
766 ieee80211_iterate_active_interfaces_atomic(
767 data->hw, IEEE80211_IFACE_ITER_NORMAL,
768 hwsim_send_nullfunc_no_ps, data);
769 }
770 local_bh_enable();
771
772 return 0;
773 }
774
775 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
776 "%llu\n");
777
hwsim_write_simulate_radar(void * dat,u64 val)778 static int hwsim_write_simulate_radar(void *dat, u64 val)
779 {
780 struct mac80211_hwsim_data *data = dat;
781
782 ieee80211_radar_detected(data->hw);
783
784 return 0;
785 }
786
787 DEFINE_SIMPLE_ATTRIBUTE(hwsim_simulate_radar, NULL,
788 hwsim_write_simulate_radar, "%llu\n");
789
hwsim_fops_group_read(void * dat,u64 * val)790 static int hwsim_fops_group_read(void *dat, u64 *val)
791 {
792 struct mac80211_hwsim_data *data = dat;
793 *val = data->group;
794 return 0;
795 }
796
hwsim_fops_group_write(void * dat,u64 val)797 static int hwsim_fops_group_write(void *dat, u64 val)
798 {
799 struct mac80211_hwsim_data *data = dat;
800 data->group = val;
801 return 0;
802 }
803
804 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
805 hwsim_fops_group_read, hwsim_fops_group_write,
806 "%llx\n");
807
hwsim_mon_xmit(struct sk_buff * skb,struct net_device * dev)808 static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
809 struct net_device *dev)
810 {
811 /* TODO: allow packet injection */
812 dev_kfree_skb(skb);
813 return NETDEV_TX_OK;
814 }
815
mac80211_hwsim_get_tsf_raw(void)816 static inline u64 mac80211_hwsim_get_tsf_raw(void)
817 {
818 return ktime_to_us(ktime_get_real());
819 }
820
__mac80211_hwsim_get_tsf(struct mac80211_hwsim_data * data)821 static __le64 __mac80211_hwsim_get_tsf(struct mac80211_hwsim_data *data)
822 {
823 u64 now = mac80211_hwsim_get_tsf_raw();
824 return cpu_to_le64(now + data->tsf_offset);
825 }
826
mac80211_hwsim_get_tsf(struct ieee80211_hw * hw,struct ieee80211_vif * vif)827 static u64 mac80211_hwsim_get_tsf(struct ieee80211_hw *hw,
828 struct ieee80211_vif *vif)
829 {
830 struct mac80211_hwsim_data *data = hw->priv;
831 return le64_to_cpu(__mac80211_hwsim_get_tsf(data));
832 }
833
mac80211_hwsim_set_tsf(struct ieee80211_hw * hw,struct ieee80211_vif * vif,u64 tsf)834 static void mac80211_hwsim_set_tsf(struct ieee80211_hw *hw,
835 struct ieee80211_vif *vif, u64 tsf)
836 {
837 struct mac80211_hwsim_data *data = hw->priv;
838 u64 now = mac80211_hwsim_get_tsf(hw, vif);
839 u32 bcn_int = data->beacon_int;
840 u64 delta = abs(tsf - now);
841
842 /* adjust after beaconing with new timestamp at old TBTT */
843 if (tsf > now) {
844 data->tsf_offset += delta;
845 data->bcn_delta = do_div(delta, bcn_int);
846 } else {
847 data->tsf_offset -= delta;
848 data->bcn_delta = -(s64)do_div(delta, bcn_int);
849 }
850 }
851
mac80211_hwsim_monitor_rx(struct ieee80211_hw * hw,struct sk_buff * tx_skb,struct ieee80211_channel * chan)852 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
853 struct sk_buff *tx_skb,
854 struct ieee80211_channel *chan)
855 {
856 struct mac80211_hwsim_data *data = hw->priv;
857 struct sk_buff *skb;
858 struct hwsim_radiotap_hdr *hdr;
859 u16 flags;
860 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
861 struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
862
863 if (WARN_ON(!txrate))
864 return;
865
866 if (!netif_running(hwsim_mon))
867 return;
868
869 skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
870 if (skb == NULL)
871 return;
872
873 hdr = skb_push(skb, sizeof(*hdr));
874 hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
875 hdr->hdr.it_pad = 0;
876 hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
877 hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
878 (1 << IEEE80211_RADIOTAP_RATE) |
879 (1 << IEEE80211_RADIOTAP_TSFT) |
880 (1 << IEEE80211_RADIOTAP_CHANNEL));
881 hdr->rt_tsft = __mac80211_hwsim_get_tsf(data);
882 hdr->rt_flags = 0;
883 hdr->rt_rate = txrate->bitrate / 5;
884 hdr->rt_channel = cpu_to_le16(chan->center_freq);
885 flags = IEEE80211_CHAN_2GHZ;
886 if (txrate->flags & IEEE80211_RATE_ERP_G)
887 flags |= IEEE80211_CHAN_OFDM;
888 else
889 flags |= IEEE80211_CHAN_CCK;
890 hdr->rt_chbitmask = cpu_to_le16(flags);
891
892 skb->dev = hwsim_mon;
893 skb_reset_mac_header(skb);
894 skb->ip_summed = CHECKSUM_UNNECESSARY;
895 skb->pkt_type = PACKET_OTHERHOST;
896 skb->protocol = htons(ETH_P_802_2);
897 memset(skb->cb, 0, sizeof(skb->cb));
898 netif_rx(skb);
899 }
900
901
mac80211_hwsim_monitor_ack(struct ieee80211_channel * chan,const u8 * addr)902 static void mac80211_hwsim_monitor_ack(struct ieee80211_channel *chan,
903 const u8 *addr)
904 {
905 struct sk_buff *skb;
906 struct hwsim_radiotap_ack_hdr *hdr;
907 u16 flags;
908 struct ieee80211_hdr *hdr11;
909
910 if (!netif_running(hwsim_mon))
911 return;
912
913 skb = dev_alloc_skb(100);
914 if (skb == NULL)
915 return;
916
917 hdr = skb_put(skb, sizeof(*hdr));
918 hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
919 hdr->hdr.it_pad = 0;
920 hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
921 hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
922 (1 << IEEE80211_RADIOTAP_CHANNEL));
923 hdr->rt_flags = 0;
924 hdr->pad = 0;
925 hdr->rt_channel = cpu_to_le16(chan->center_freq);
926 flags = IEEE80211_CHAN_2GHZ;
927 hdr->rt_chbitmask = cpu_to_le16(flags);
928
929 hdr11 = skb_put(skb, 10);
930 hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
931 IEEE80211_STYPE_ACK);
932 hdr11->duration_id = cpu_to_le16(0);
933 memcpy(hdr11->addr1, addr, ETH_ALEN);
934
935 skb->dev = hwsim_mon;
936 skb_reset_mac_header(skb);
937 skb->ip_summed = CHECKSUM_UNNECESSARY;
938 skb->pkt_type = PACKET_OTHERHOST;
939 skb->protocol = htons(ETH_P_802_2);
940 memset(skb->cb, 0, sizeof(skb->cb));
941 netif_rx(skb);
942 }
943
944 struct mac80211_hwsim_addr_match_data {
945 u8 addr[ETH_ALEN];
946 bool ret;
947 };
948
mac80211_hwsim_addr_iter(void * data,u8 * mac,struct ieee80211_vif * vif)949 static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
950 struct ieee80211_vif *vif)
951 {
952 struct mac80211_hwsim_addr_match_data *md = data;
953
954 if (memcmp(mac, md->addr, ETH_ALEN) == 0)
955 md->ret = true;
956 }
957
mac80211_hwsim_addr_match(struct mac80211_hwsim_data * data,const u8 * addr)958 static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
959 const u8 *addr)
960 {
961 struct mac80211_hwsim_addr_match_data md = {
962 .ret = false,
963 };
964
965 if (data->scanning && memcmp(addr, data->scan_addr, ETH_ALEN) == 0)
966 return true;
967
968 memcpy(md.addr, addr, ETH_ALEN);
969
970 ieee80211_iterate_active_interfaces_atomic(data->hw,
971 IEEE80211_IFACE_ITER_NORMAL,
972 mac80211_hwsim_addr_iter,
973 &md);
974
975 return md.ret;
976 }
977
hwsim_ps_rx_ok(struct mac80211_hwsim_data * data,struct sk_buff * skb)978 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
979 struct sk_buff *skb)
980 {
981 switch (data->ps) {
982 case PS_DISABLED:
983 return true;
984 case PS_ENABLED:
985 return false;
986 case PS_AUTO_POLL:
987 /* TODO: accept (some) Beacons by default and other frames only
988 * if pending PS-Poll has been sent */
989 return true;
990 case PS_MANUAL_POLL:
991 /* Allow unicast frames to own address if there is a pending
992 * PS-Poll */
993 if (data->ps_poll_pending &&
994 mac80211_hwsim_addr_match(data, skb->data + 4)) {
995 data->ps_poll_pending = false;
996 return true;
997 }
998 return false;
999 }
1000
1001 return true;
1002 }
1003
hwsim_unicast_netgroup(struct mac80211_hwsim_data * data,struct sk_buff * skb,int portid)1004 static int hwsim_unicast_netgroup(struct mac80211_hwsim_data *data,
1005 struct sk_buff *skb, int portid)
1006 {
1007 struct net *net;
1008 bool found = false;
1009 int res = -ENOENT;
1010
1011 rcu_read_lock();
1012 for_each_net_rcu(net) {
1013 if (data->netgroup == hwsim_net_get_netgroup(net)) {
1014 res = genlmsg_unicast(net, skb, portid);
1015 found = true;
1016 break;
1017 }
1018 }
1019 rcu_read_unlock();
1020
1021 if (!found)
1022 nlmsg_free(skb);
1023
1024 return res;
1025 }
1026
trans_tx_rate_flags_ieee2hwsim(struct ieee80211_tx_rate * rate)1027 static inline u16 trans_tx_rate_flags_ieee2hwsim(struct ieee80211_tx_rate *rate)
1028 {
1029 u16 result = 0;
1030
1031 if (rate->flags & IEEE80211_TX_RC_USE_RTS_CTS)
1032 result |= MAC80211_HWSIM_TX_RC_USE_RTS_CTS;
1033 if (rate->flags & IEEE80211_TX_RC_USE_CTS_PROTECT)
1034 result |= MAC80211_HWSIM_TX_RC_USE_CTS_PROTECT;
1035 if (rate->flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE)
1036 result |= MAC80211_HWSIM_TX_RC_USE_SHORT_PREAMBLE;
1037 if (rate->flags & IEEE80211_TX_RC_MCS)
1038 result |= MAC80211_HWSIM_TX_RC_MCS;
1039 if (rate->flags & IEEE80211_TX_RC_GREEN_FIELD)
1040 result |= MAC80211_HWSIM_TX_RC_GREEN_FIELD;
1041 if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
1042 result |= MAC80211_HWSIM_TX_RC_40_MHZ_WIDTH;
1043 if (rate->flags & IEEE80211_TX_RC_DUP_DATA)
1044 result |= MAC80211_HWSIM_TX_RC_DUP_DATA;
1045 if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
1046 result |= MAC80211_HWSIM_TX_RC_SHORT_GI;
1047 if (rate->flags & IEEE80211_TX_RC_VHT_MCS)
1048 result |= MAC80211_HWSIM_TX_RC_VHT_MCS;
1049 if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
1050 result |= MAC80211_HWSIM_TX_RC_80_MHZ_WIDTH;
1051 if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
1052 result |= MAC80211_HWSIM_TX_RC_160_MHZ_WIDTH;
1053
1054 return result;
1055 }
1056
mac80211_hwsim_tx_frame_nl(struct ieee80211_hw * hw,struct sk_buff * my_skb,int dst_portid)1057 static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
1058 struct sk_buff *my_skb,
1059 int dst_portid)
1060 {
1061 struct sk_buff *skb;
1062 struct mac80211_hwsim_data *data = hw->priv;
1063 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) my_skb->data;
1064 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(my_skb);
1065 void *msg_head;
1066 unsigned int hwsim_flags = 0;
1067 int i;
1068 struct hwsim_tx_rate tx_attempts[IEEE80211_TX_MAX_RATES];
1069 struct hwsim_tx_rate_flag tx_attempts_flags[IEEE80211_TX_MAX_RATES];
1070 uintptr_t cookie;
1071
1072 if (data->ps != PS_DISABLED)
1073 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1074 /* If the queue contains MAX_QUEUE skb's drop some */
1075 if (skb_queue_len(&data->pending) >= MAX_QUEUE) {
1076 /* Droping until WARN_QUEUE level */
1077 while (skb_queue_len(&data->pending) >= WARN_QUEUE) {
1078 ieee80211_free_txskb(hw, skb_dequeue(&data->pending));
1079 data->tx_dropped++;
1080 }
1081 }
1082
1083 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_ATOMIC);
1084 if (skb == NULL)
1085 goto nla_put_failure;
1086
1087 msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
1088 HWSIM_CMD_FRAME);
1089 if (msg_head == NULL) {
1090 pr_debug("mac80211_hwsim: problem with msg_head\n");
1091 goto nla_put_failure;
1092 }
1093
1094 if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
1095 ETH_ALEN, data->addresses[1].addr))
1096 goto nla_put_failure;
1097
1098 /* We get the skb->data */
1099 if (nla_put(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data))
1100 goto nla_put_failure;
1101
1102 /* We get the flags for this transmission, and we translate them to
1103 wmediumd flags */
1104
1105 if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
1106 hwsim_flags |= HWSIM_TX_CTL_REQ_TX_STATUS;
1107
1108 if (info->flags & IEEE80211_TX_CTL_NO_ACK)
1109 hwsim_flags |= HWSIM_TX_CTL_NO_ACK;
1110
1111 if (nla_put_u32(skb, HWSIM_ATTR_FLAGS, hwsim_flags))
1112 goto nla_put_failure;
1113
1114 if (nla_put_u32(skb, HWSIM_ATTR_FREQ, data->channel->center_freq))
1115 goto nla_put_failure;
1116
1117 /* We get the tx control (rate and retries) info*/
1118
1119 for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
1120 tx_attempts[i].idx = info->status.rates[i].idx;
1121 tx_attempts_flags[i].idx = info->status.rates[i].idx;
1122 tx_attempts[i].count = info->status.rates[i].count;
1123 tx_attempts_flags[i].flags =
1124 trans_tx_rate_flags_ieee2hwsim(
1125 &info->status.rates[i]);
1126 }
1127
1128 if (nla_put(skb, HWSIM_ATTR_TX_INFO,
1129 sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
1130 tx_attempts))
1131 goto nla_put_failure;
1132
1133 if (nla_put(skb, HWSIM_ATTR_TX_INFO_FLAGS,
1134 sizeof(struct hwsim_tx_rate_flag) * IEEE80211_TX_MAX_RATES,
1135 tx_attempts_flags))
1136 goto nla_put_failure;
1137
1138 /* We create a cookie to identify this skb */
1139 data->pending_cookie++;
1140 cookie = data->pending_cookie;
1141 info->rate_driver_data[0] = (void *)cookie;
1142 if (nla_put_u64_64bit(skb, HWSIM_ATTR_COOKIE, cookie, HWSIM_ATTR_PAD))
1143 goto nla_put_failure;
1144
1145 genlmsg_end(skb, msg_head);
1146 if (hwsim_unicast_netgroup(data, skb, dst_portid))
1147 goto err_free_txskb;
1148
1149 /* Enqueue the packet */
1150 skb_queue_tail(&data->pending, my_skb);
1151 data->tx_pkts++;
1152 data->tx_bytes += my_skb->len;
1153 return;
1154
1155 nla_put_failure:
1156 nlmsg_free(skb);
1157 err_free_txskb:
1158 pr_debug("mac80211_hwsim: error occurred in %s\n", __func__);
1159 ieee80211_free_txskb(hw, my_skb);
1160 data->tx_failed++;
1161 }
1162
hwsim_chans_compat(struct ieee80211_channel * c1,struct ieee80211_channel * c2)1163 static bool hwsim_chans_compat(struct ieee80211_channel *c1,
1164 struct ieee80211_channel *c2)
1165 {
1166 if (!c1 || !c2)
1167 return false;
1168
1169 return c1->center_freq == c2->center_freq;
1170 }
1171
1172 struct tx_iter_data {
1173 struct ieee80211_channel *channel;
1174 bool receive;
1175 };
1176
mac80211_hwsim_tx_iter(void * _data,u8 * addr,struct ieee80211_vif * vif)1177 static void mac80211_hwsim_tx_iter(void *_data, u8 *addr,
1178 struct ieee80211_vif *vif)
1179 {
1180 struct tx_iter_data *data = _data;
1181
1182 if (!vif->chanctx_conf)
1183 return;
1184
1185 if (!hwsim_chans_compat(data->channel,
1186 rcu_dereference(vif->chanctx_conf)->def.chan))
1187 return;
1188
1189 data->receive = true;
1190 }
1191
mac80211_hwsim_add_vendor_rtap(struct sk_buff * skb)1192 static void mac80211_hwsim_add_vendor_rtap(struct sk_buff *skb)
1193 {
1194 /*
1195 * To enable this code, #define the HWSIM_RADIOTAP_OUI,
1196 * e.g. like this:
1197 * #define HWSIM_RADIOTAP_OUI "\x02\x00\x00"
1198 * (but you should use a valid OUI, not that)
1199 *
1200 * If anyone wants to 'donate' a radiotap OUI/subns code
1201 * please send a patch removing this #ifdef and changing
1202 * the values accordingly.
1203 */
1204 #ifdef HWSIM_RADIOTAP_OUI
1205 struct ieee80211_vendor_radiotap *rtap;
1206
1207 /*
1208 * Note that this code requires the headroom in the SKB
1209 * that was allocated earlier.
1210 */
1211 rtap = skb_push(skb, sizeof(*rtap) + 8 + 4);
1212 rtap->oui[0] = HWSIM_RADIOTAP_OUI[0];
1213 rtap->oui[1] = HWSIM_RADIOTAP_OUI[1];
1214 rtap->oui[2] = HWSIM_RADIOTAP_OUI[2];
1215 rtap->subns = 127;
1216
1217 /*
1218 * Radiotap vendor namespaces can (and should) also be
1219 * split into fields by using the standard radiotap
1220 * presence bitmap mechanism. Use just BIT(0) here for
1221 * the presence bitmap.
1222 */
1223 rtap->present = BIT(0);
1224 /* We have 8 bytes of (dummy) data */
1225 rtap->len = 8;
1226 /* For testing, also require it to be aligned */
1227 rtap->align = 8;
1228 /* And also test that padding works, 4 bytes */
1229 rtap->pad = 4;
1230 /* push the data */
1231 memcpy(rtap->data, "ABCDEFGH", 8);
1232 /* make sure to clear padding, mac80211 doesn't */
1233 memset(rtap->data + 8, 0, 4);
1234
1235 IEEE80211_SKB_RXCB(skb)->flag |= RX_FLAG_RADIOTAP_VENDOR_DATA;
1236 #endif
1237 }
1238
mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw * hw,struct sk_buff * skb,struct ieee80211_channel * chan)1239 static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
1240 struct sk_buff *skb,
1241 struct ieee80211_channel *chan)
1242 {
1243 struct mac80211_hwsim_data *data = hw->priv, *data2;
1244 bool ack = false;
1245 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1246 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1247 struct ieee80211_rx_status rx_status;
1248 u64 now;
1249
1250 memset(&rx_status, 0, sizeof(rx_status));
1251 rx_status.flag |= RX_FLAG_MACTIME_START;
1252 rx_status.freq = chan->center_freq;
1253 rx_status.band = chan->band;
1254 if (info->control.rates[0].flags & IEEE80211_TX_RC_VHT_MCS) {
1255 rx_status.rate_idx =
1256 ieee80211_rate_get_vht_mcs(&info->control.rates[0]);
1257 rx_status.nss =
1258 ieee80211_rate_get_vht_nss(&info->control.rates[0]);
1259 rx_status.encoding = RX_ENC_VHT;
1260 } else {
1261 rx_status.rate_idx = info->control.rates[0].idx;
1262 if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
1263 rx_status.encoding = RX_ENC_HT;
1264 }
1265 if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
1266 rx_status.bw = RATE_INFO_BW_40;
1267 else if (info->control.rates[0].flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
1268 rx_status.bw = RATE_INFO_BW_80;
1269 else if (info->control.rates[0].flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
1270 rx_status.bw = RATE_INFO_BW_160;
1271 else
1272 rx_status.bw = RATE_INFO_BW_20;
1273 if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
1274 rx_status.enc_flags |= RX_ENC_FLAG_SHORT_GI;
1275 /* TODO: simulate real signal strength (and optional packet loss) */
1276 rx_status.signal = -50;
1277 if (info->control.vif)
1278 rx_status.signal += info->control.vif->bss_conf.txpower;
1279
1280 if (data->ps != PS_DISABLED)
1281 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1282
1283 /* release the skb's source info */
1284 skb_orphan(skb);
1285 skb_dst_drop(skb);
1286 skb->mark = 0;
1287 secpath_reset(skb);
1288 nf_reset(skb);
1289
1290 /*
1291 * Get absolute mactime here so all HWs RX at the "same time", and
1292 * absolute TX time for beacon mactime so the timestamp matches.
1293 * Giving beacons a different mactime than non-beacons looks messy, but
1294 * it helps the Toffset be exact and a ~10us mactime discrepancy
1295 * probably doesn't really matter.
1296 */
1297 if (ieee80211_is_beacon(hdr->frame_control) ||
1298 ieee80211_is_probe_resp(hdr->frame_control))
1299 now = data->abs_bcn_ts;
1300 else
1301 now = mac80211_hwsim_get_tsf_raw();
1302
1303 /* Copy skb to all enabled radios that are on the current frequency */
1304 spin_lock(&hwsim_radio_lock);
1305 list_for_each_entry(data2, &hwsim_radios, list) {
1306 struct sk_buff *nskb;
1307 struct tx_iter_data tx_iter_data = {
1308 .receive = false,
1309 .channel = chan,
1310 };
1311
1312 if (data == data2)
1313 continue;
1314
1315 if (!data2->started || (data2->idle && !data2->tmp_chan) ||
1316 !hwsim_ps_rx_ok(data2, skb))
1317 continue;
1318
1319 if (!(data->group & data2->group))
1320 continue;
1321
1322 if (data->netgroup != data2->netgroup)
1323 continue;
1324
1325 if (!hwsim_chans_compat(chan, data2->tmp_chan) &&
1326 !hwsim_chans_compat(chan, data2->channel)) {
1327 ieee80211_iterate_active_interfaces_atomic(
1328 data2->hw, IEEE80211_IFACE_ITER_NORMAL,
1329 mac80211_hwsim_tx_iter, &tx_iter_data);
1330 if (!tx_iter_data.receive)
1331 continue;
1332 }
1333
1334 /*
1335 * reserve some space for our vendor and the normal
1336 * radiotap header, since we're copying anyway
1337 */
1338 if (skb->len < PAGE_SIZE && paged_rx) {
1339 struct page *page = alloc_page(GFP_ATOMIC);
1340
1341 if (!page)
1342 continue;
1343
1344 nskb = dev_alloc_skb(128);
1345 if (!nskb) {
1346 __free_page(page);
1347 continue;
1348 }
1349
1350 memcpy(page_address(page), skb->data, skb->len);
1351 skb_add_rx_frag(nskb, 0, page, 0, skb->len, skb->len);
1352 } else {
1353 nskb = skb_copy(skb, GFP_ATOMIC);
1354 if (!nskb)
1355 continue;
1356 }
1357
1358 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
1359 ack = true;
1360
1361 rx_status.mactime = now + data2->tsf_offset;
1362
1363 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
1364
1365 mac80211_hwsim_add_vendor_rtap(nskb);
1366
1367 data2->rx_pkts++;
1368 data2->rx_bytes += nskb->len;
1369 ieee80211_rx_irqsafe(data2->hw, nskb);
1370 }
1371 spin_unlock(&hwsim_radio_lock);
1372
1373 return ack;
1374 }
1375
mac80211_hwsim_tx(struct ieee80211_hw * hw,struct ieee80211_tx_control * control,struct sk_buff * skb)1376 static void mac80211_hwsim_tx(struct ieee80211_hw *hw,
1377 struct ieee80211_tx_control *control,
1378 struct sk_buff *skb)
1379 {
1380 struct mac80211_hwsim_data *data = hw->priv;
1381 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1382 struct ieee80211_hdr *hdr = (void *)skb->data;
1383 struct ieee80211_chanctx_conf *chanctx_conf;
1384 struct ieee80211_channel *channel;
1385 bool ack;
1386 u32 _portid;
1387
1388 if (WARN_ON(skb->len < 10)) {
1389 /* Should not happen; just a sanity check for addr1 use */
1390 ieee80211_free_txskb(hw, skb);
1391 return;
1392 }
1393
1394 if (!data->use_chanctx) {
1395 channel = data->channel;
1396 } else if (txi->hw_queue == 4) {
1397 channel = data->tmp_chan;
1398 } else {
1399 chanctx_conf = rcu_dereference(txi->control.vif->chanctx_conf);
1400 if (chanctx_conf)
1401 channel = chanctx_conf->def.chan;
1402 else
1403 channel = NULL;
1404 }
1405
1406 if (WARN(!channel, "TX w/o channel - queue = %d\n", txi->hw_queue)) {
1407 ieee80211_free_txskb(hw, skb);
1408 return;
1409 }
1410
1411 if (data->idle && !data->tmp_chan) {
1412 wiphy_dbg(hw->wiphy, "Trying to TX when idle - reject\n");
1413 ieee80211_free_txskb(hw, skb);
1414 return;
1415 }
1416
1417 if (txi->control.vif)
1418 hwsim_check_magic(txi->control.vif);
1419 if (control->sta)
1420 hwsim_check_sta_magic(control->sta);
1421
1422 if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE))
1423 ieee80211_get_tx_rates(txi->control.vif, control->sta, skb,
1424 txi->control.rates,
1425 ARRAY_SIZE(txi->control.rates));
1426
1427 if (skb->len >= 24 + 8 &&
1428 ieee80211_is_probe_resp(hdr->frame_control)) {
1429 /* fake header transmission time */
1430 struct ieee80211_mgmt *mgmt;
1431 struct ieee80211_rate *txrate;
1432 u64 ts;
1433
1434 mgmt = (struct ieee80211_mgmt *)skb->data;
1435 txrate = ieee80211_get_tx_rate(hw, txi);
1436 ts = mac80211_hwsim_get_tsf_raw();
1437 mgmt->u.probe_resp.timestamp =
1438 cpu_to_le64(ts + data->tsf_offset +
1439 24 * 8 * 10 / txrate->bitrate);
1440 }
1441
1442 mac80211_hwsim_monitor_rx(hw, skb, channel);
1443
1444 /* wmediumd mode check */
1445 _portid = READ_ONCE(data->wmediumd);
1446
1447 if (_portid)
1448 return mac80211_hwsim_tx_frame_nl(hw, skb, _portid);
1449
1450 /* NO wmediumd detected, perfect medium simulation */
1451 data->tx_pkts++;
1452 data->tx_bytes += skb->len;
1453 ack = mac80211_hwsim_tx_frame_no_nl(hw, skb, channel);
1454
1455 if (ack && skb->len >= 16)
1456 mac80211_hwsim_monitor_ack(channel, hdr->addr2);
1457
1458 ieee80211_tx_info_clear_status(txi);
1459
1460 /* frame was transmitted at most favorable rate at first attempt */
1461 txi->control.rates[0].count = 1;
1462 txi->control.rates[1].idx = -1;
1463
1464 if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
1465 txi->flags |= IEEE80211_TX_STAT_ACK;
1466 ieee80211_tx_status_irqsafe(hw, skb);
1467 }
1468
1469
mac80211_hwsim_start(struct ieee80211_hw * hw)1470 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
1471 {
1472 struct mac80211_hwsim_data *data = hw->priv;
1473 wiphy_dbg(hw->wiphy, "%s\n", __func__);
1474 data->started = true;
1475 return 0;
1476 }
1477
1478
mac80211_hwsim_stop(struct ieee80211_hw * hw)1479 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
1480 {
1481 struct mac80211_hwsim_data *data = hw->priv;
1482 data->started = false;
1483 tasklet_hrtimer_cancel(&data->beacon_timer);
1484 wiphy_dbg(hw->wiphy, "%s\n", __func__);
1485 }
1486
1487
mac80211_hwsim_add_interface(struct ieee80211_hw * hw,struct ieee80211_vif * vif)1488 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
1489 struct ieee80211_vif *vif)
1490 {
1491 wiphy_dbg(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1492 __func__, ieee80211_vif_type_p2p(vif),
1493 vif->addr);
1494 hwsim_set_magic(vif);
1495
1496 vif->cab_queue = 0;
1497 vif->hw_queue[IEEE80211_AC_VO] = 0;
1498 vif->hw_queue[IEEE80211_AC_VI] = 1;
1499 vif->hw_queue[IEEE80211_AC_BE] = 2;
1500 vif->hw_queue[IEEE80211_AC_BK] = 3;
1501
1502 return 0;
1503 }
1504
1505
mac80211_hwsim_change_interface(struct ieee80211_hw * hw,struct ieee80211_vif * vif,enum nl80211_iftype newtype,bool newp2p)1506 static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
1507 struct ieee80211_vif *vif,
1508 enum nl80211_iftype newtype,
1509 bool newp2p)
1510 {
1511 newtype = ieee80211_iftype_p2p(newtype, newp2p);
1512 wiphy_dbg(hw->wiphy,
1513 "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
1514 __func__, ieee80211_vif_type_p2p(vif),
1515 newtype, vif->addr);
1516 hwsim_check_magic(vif);
1517
1518 /*
1519 * interface may change from non-AP to AP in
1520 * which case this needs to be set up again
1521 */
1522 vif->cab_queue = 0;
1523
1524 return 0;
1525 }
1526
mac80211_hwsim_remove_interface(struct ieee80211_hw * hw,struct ieee80211_vif * vif)1527 static void mac80211_hwsim_remove_interface(
1528 struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1529 {
1530 wiphy_dbg(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1531 __func__, ieee80211_vif_type_p2p(vif),
1532 vif->addr);
1533 hwsim_check_magic(vif);
1534 hwsim_clear_magic(vif);
1535 }
1536
mac80211_hwsim_tx_frame(struct ieee80211_hw * hw,struct sk_buff * skb,struct ieee80211_channel * chan)1537 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
1538 struct sk_buff *skb,
1539 struct ieee80211_channel *chan)
1540 {
1541 struct mac80211_hwsim_data *data = hw->priv;
1542 u32 _pid = READ_ONCE(data->wmediumd);
1543
1544 if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE)) {
1545 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1546 ieee80211_get_tx_rates(txi->control.vif, NULL, skb,
1547 txi->control.rates,
1548 ARRAY_SIZE(txi->control.rates));
1549 }
1550
1551 mac80211_hwsim_monitor_rx(hw, skb, chan);
1552
1553 if (_pid)
1554 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
1555
1556 mac80211_hwsim_tx_frame_no_nl(hw, skb, chan);
1557 dev_kfree_skb(skb);
1558 }
1559
mac80211_hwsim_beacon_tx(void * arg,u8 * mac,struct ieee80211_vif * vif)1560 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
1561 struct ieee80211_vif *vif)
1562 {
1563 struct mac80211_hwsim_data *data = arg;
1564 struct ieee80211_hw *hw = data->hw;
1565 struct ieee80211_tx_info *info;
1566 struct ieee80211_rate *txrate;
1567 struct ieee80211_mgmt *mgmt;
1568 struct sk_buff *skb;
1569
1570 hwsim_check_magic(vif);
1571
1572 if (vif->type != NL80211_IFTYPE_AP &&
1573 vif->type != NL80211_IFTYPE_MESH_POINT &&
1574 vif->type != NL80211_IFTYPE_ADHOC)
1575 return;
1576
1577 skb = ieee80211_beacon_get(hw, vif);
1578 if (skb == NULL)
1579 return;
1580 info = IEEE80211_SKB_CB(skb);
1581 if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE))
1582 ieee80211_get_tx_rates(vif, NULL, skb,
1583 info->control.rates,
1584 ARRAY_SIZE(info->control.rates));
1585
1586 txrate = ieee80211_get_tx_rate(hw, info);
1587
1588 mgmt = (struct ieee80211_mgmt *) skb->data;
1589 /* fake header transmission time */
1590 data->abs_bcn_ts = mac80211_hwsim_get_tsf_raw();
1591 mgmt->u.beacon.timestamp = cpu_to_le64(data->abs_bcn_ts +
1592 data->tsf_offset +
1593 24 * 8 * 10 / txrate->bitrate);
1594
1595 mac80211_hwsim_tx_frame(hw, skb,
1596 rcu_dereference(vif->chanctx_conf)->def.chan);
1597
1598 if (vif->csa_active && ieee80211_csa_is_complete(vif))
1599 ieee80211_csa_finish(vif);
1600 }
1601
1602 static enum hrtimer_restart
mac80211_hwsim_beacon(struct hrtimer * timer)1603 mac80211_hwsim_beacon(struct hrtimer *timer)
1604 {
1605 struct mac80211_hwsim_data *data =
1606 container_of(timer, struct mac80211_hwsim_data,
1607 beacon_timer.timer);
1608 struct ieee80211_hw *hw = data->hw;
1609 u64 bcn_int = data->beacon_int;
1610 ktime_t next_bcn;
1611
1612 if (!data->started)
1613 goto out;
1614
1615 ieee80211_iterate_active_interfaces_atomic(
1616 hw, IEEE80211_IFACE_ITER_NORMAL,
1617 mac80211_hwsim_beacon_tx, data);
1618
1619 /* beacon at new TBTT + beacon interval */
1620 if (data->bcn_delta) {
1621 bcn_int -= data->bcn_delta;
1622 data->bcn_delta = 0;
1623 }
1624
1625 next_bcn = ktime_add(hrtimer_get_expires(timer),
1626 ns_to_ktime(bcn_int * 1000));
1627 tasklet_hrtimer_start(&data->beacon_timer, next_bcn, HRTIMER_MODE_ABS);
1628 out:
1629 return HRTIMER_NORESTART;
1630 }
1631
1632 static const char * const hwsim_chanwidths[] = {
1633 [NL80211_CHAN_WIDTH_20_NOHT] = "noht",
1634 [NL80211_CHAN_WIDTH_20] = "ht20",
1635 [NL80211_CHAN_WIDTH_40] = "ht40",
1636 [NL80211_CHAN_WIDTH_80] = "vht80",
1637 [NL80211_CHAN_WIDTH_80P80] = "vht80p80",
1638 [NL80211_CHAN_WIDTH_160] = "vht160",
1639 };
1640
mac80211_hwsim_config(struct ieee80211_hw * hw,u32 changed)1641 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
1642 {
1643 struct mac80211_hwsim_data *data = hw->priv;
1644 struct ieee80211_conf *conf = &hw->conf;
1645 static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
1646 [IEEE80211_SMPS_AUTOMATIC] = "auto",
1647 [IEEE80211_SMPS_OFF] = "off",
1648 [IEEE80211_SMPS_STATIC] = "static",
1649 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
1650 };
1651 int idx;
1652
1653 if (conf->chandef.chan)
1654 wiphy_dbg(hw->wiphy,
1655 "%s (freq=%d(%d - %d)/%s idle=%d ps=%d smps=%s)\n",
1656 __func__,
1657 conf->chandef.chan->center_freq,
1658 conf->chandef.center_freq1,
1659 conf->chandef.center_freq2,
1660 hwsim_chanwidths[conf->chandef.width],
1661 !!(conf->flags & IEEE80211_CONF_IDLE),
1662 !!(conf->flags & IEEE80211_CONF_PS),
1663 smps_modes[conf->smps_mode]);
1664 else
1665 wiphy_dbg(hw->wiphy,
1666 "%s (freq=0 idle=%d ps=%d smps=%s)\n",
1667 __func__,
1668 !!(conf->flags & IEEE80211_CONF_IDLE),
1669 !!(conf->flags & IEEE80211_CONF_PS),
1670 smps_modes[conf->smps_mode]);
1671
1672 data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
1673
1674 WARN_ON(conf->chandef.chan && data->use_chanctx);
1675
1676 mutex_lock(&data->mutex);
1677 if (data->scanning && conf->chandef.chan) {
1678 for (idx = 0; idx < ARRAY_SIZE(data->survey_data); idx++) {
1679 if (data->survey_data[idx].channel == data->channel) {
1680 data->survey_data[idx].start =
1681 data->survey_data[idx].next_start;
1682 data->survey_data[idx].end = jiffies;
1683 break;
1684 }
1685 }
1686
1687 data->channel = conf->chandef.chan;
1688
1689 for (idx = 0; idx < ARRAY_SIZE(data->survey_data); idx++) {
1690 if (data->survey_data[idx].channel &&
1691 data->survey_data[idx].channel != data->channel)
1692 continue;
1693 data->survey_data[idx].channel = data->channel;
1694 data->survey_data[idx].next_start = jiffies;
1695 break;
1696 }
1697 } else {
1698 data->channel = conf->chandef.chan;
1699 }
1700 mutex_unlock(&data->mutex);
1701
1702 if (!data->started || !data->beacon_int)
1703 tasklet_hrtimer_cancel(&data->beacon_timer);
1704 else if (!hrtimer_is_queued(&data->beacon_timer.timer)) {
1705 u64 tsf = mac80211_hwsim_get_tsf(hw, NULL);
1706 u32 bcn_int = data->beacon_int;
1707 u64 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1708
1709 tasklet_hrtimer_start(&data->beacon_timer,
1710 ns_to_ktime(until_tbtt * 1000),
1711 HRTIMER_MODE_REL);
1712 }
1713
1714 return 0;
1715 }
1716
1717
mac80211_hwsim_configure_filter(struct ieee80211_hw * hw,unsigned int changed_flags,unsigned int * total_flags,u64 multicast)1718 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
1719 unsigned int changed_flags,
1720 unsigned int *total_flags,u64 multicast)
1721 {
1722 struct mac80211_hwsim_data *data = hw->priv;
1723
1724 wiphy_dbg(hw->wiphy, "%s\n", __func__);
1725
1726 data->rx_filter = 0;
1727 if (*total_flags & FIF_ALLMULTI)
1728 data->rx_filter |= FIF_ALLMULTI;
1729
1730 *total_flags = data->rx_filter;
1731 }
1732
mac80211_hwsim_bcn_en_iter(void * data,u8 * mac,struct ieee80211_vif * vif)1733 static void mac80211_hwsim_bcn_en_iter(void *data, u8 *mac,
1734 struct ieee80211_vif *vif)
1735 {
1736 unsigned int *count = data;
1737 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1738
1739 if (vp->bcn_en)
1740 (*count)++;
1741 }
1742
mac80211_hwsim_bss_info_changed(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_bss_conf * info,u32 changed)1743 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
1744 struct ieee80211_vif *vif,
1745 struct ieee80211_bss_conf *info,
1746 u32 changed)
1747 {
1748 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1749 struct mac80211_hwsim_data *data = hw->priv;
1750
1751 hwsim_check_magic(vif);
1752
1753 wiphy_dbg(hw->wiphy, "%s(changed=0x%x vif->addr=%pM)\n",
1754 __func__, changed, vif->addr);
1755
1756 if (changed & BSS_CHANGED_BSSID) {
1757 wiphy_dbg(hw->wiphy, "%s: BSSID changed: %pM\n",
1758 __func__, info->bssid);
1759 memcpy(vp->bssid, info->bssid, ETH_ALEN);
1760 }
1761
1762 if (changed & BSS_CHANGED_ASSOC) {
1763 wiphy_dbg(hw->wiphy, " ASSOC: assoc=%d aid=%d\n",
1764 info->assoc, info->aid);
1765 vp->assoc = info->assoc;
1766 vp->aid = info->aid;
1767 }
1768
1769 if (changed & BSS_CHANGED_BEACON_ENABLED) {
1770 wiphy_dbg(hw->wiphy, " BCN EN: %d (BI=%u)\n",
1771 info->enable_beacon, info->beacon_int);
1772 vp->bcn_en = info->enable_beacon;
1773 if (data->started &&
1774 !hrtimer_is_queued(&data->beacon_timer.timer) &&
1775 info->enable_beacon) {
1776 u64 tsf, until_tbtt;
1777 u32 bcn_int;
1778 data->beacon_int = info->beacon_int * 1024;
1779 tsf = mac80211_hwsim_get_tsf(hw, vif);
1780 bcn_int = data->beacon_int;
1781 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1782 tasklet_hrtimer_start(&data->beacon_timer,
1783 ns_to_ktime(until_tbtt * 1000),
1784 HRTIMER_MODE_REL);
1785 } else if (!info->enable_beacon) {
1786 unsigned int count = 0;
1787 ieee80211_iterate_active_interfaces_atomic(
1788 data->hw, IEEE80211_IFACE_ITER_NORMAL,
1789 mac80211_hwsim_bcn_en_iter, &count);
1790 wiphy_dbg(hw->wiphy, " beaconing vifs remaining: %u",
1791 count);
1792 if (count == 0) {
1793 tasklet_hrtimer_cancel(&data->beacon_timer);
1794 data->beacon_int = 0;
1795 }
1796 }
1797 }
1798
1799 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1800 wiphy_dbg(hw->wiphy, " ERP_CTS_PROT: %d\n",
1801 info->use_cts_prot);
1802 }
1803
1804 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1805 wiphy_dbg(hw->wiphy, " ERP_PREAMBLE: %d\n",
1806 info->use_short_preamble);
1807 }
1808
1809 if (changed & BSS_CHANGED_ERP_SLOT) {
1810 wiphy_dbg(hw->wiphy, " ERP_SLOT: %d\n", info->use_short_slot);
1811 }
1812
1813 if (changed & BSS_CHANGED_HT) {
1814 wiphy_dbg(hw->wiphy, " HT: op_mode=0x%x\n",
1815 info->ht_operation_mode);
1816 }
1817
1818 if (changed & BSS_CHANGED_BASIC_RATES) {
1819 wiphy_dbg(hw->wiphy, " BASIC_RATES: 0x%llx\n",
1820 (unsigned long long) info->basic_rates);
1821 }
1822
1823 if (changed & BSS_CHANGED_TXPOWER)
1824 wiphy_dbg(hw->wiphy, " TX Power: %d dBm\n", info->txpower);
1825 }
1826
mac80211_hwsim_sta_add(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta)1827 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
1828 struct ieee80211_vif *vif,
1829 struct ieee80211_sta *sta)
1830 {
1831 hwsim_check_magic(vif);
1832 hwsim_set_sta_magic(sta);
1833
1834 return 0;
1835 }
1836
mac80211_hwsim_sta_remove(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta)1837 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
1838 struct ieee80211_vif *vif,
1839 struct ieee80211_sta *sta)
1840 {
1841 hwsim_check_magic(vif);
1842 hwsim_clear_sta_magic(sta);
1843
1844 return 0;
1845 }
1846
mac80211_hwsim_sta_notify(struct ieee80211_hw * hw,struct ieee80211_vif * vif,enum sta_notify_cmd cmd,struct ieee80211_sta * sta)1847 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
1848 struct ieee80211_vif *vif,
1849 enum sta_notify_cmd cmd,
1850 struct ieee80211_sta *sta)
1851 {
1852 hwsim_check_magic(vif);
1853
1854 switch (cmd) {
1855 case STA_NOTIFY_SLEEP:
1856 case STA_NOTIFY_AWAKE:
1857 /* TODO: make good use of these flags */
1858 break;
1859 default:
1860 WARN(1, "Invalid sta notify: %d\n", cmd);
1861 break;
1862 }
1863 }
1864
mac80211_hwsim_set_tim(struct ieee80211_hw * hw,struct ieee80211_sta * sta,bool set)1865 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
1866 struct ieee80211_sta *sta,
1867 bool set)
1868 {
1869 hwsim_check_sta_magic(sta);
1870 return 0;
1871 }
1872
mac80211_hwsim_conf_tx(struct ieee80211_hw * hw,struct ieee80211_vif * vif,u16 queue,const struct ieee80211_tx_queue_params * params)1873 static int mac80211_hwsim_conf_tx(
1874 struct ieee80211_hw *hw,
1875 struct ieee80211_vif *vif, u16 queue,
1876 const struct ieee80211_tx_queue_params *params)
1877 {
1878 wiphy_dbg(hw->wiphy,
1879 "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
1880 __func__, queue,
1881 params->txop, params->cw_min,
1882 params->cw_max, params->aifs);
1883 return 0;
1884 }
1885
mac80211_hwsim_get_survey(struct ieee80211_hw * hw,int idx,struct survey_info * survey)1886 static int mac80211_hwsim_get_survey(struct ieee80211_hw *hw, int idx,
1887 struct survey_info *survey)
1888 {
1889 struct mac80211_hwsim_data *hwsim = hw->priv;
1890
1891 if (idx < 0 || idx >= ARRAY_SIZE(hwsim->survey_data))
1892 return -ENOENT;
1893
1894 mutex_lock(&hwsim->mutex);
1895 survey->channel = hwsim->survey_data[idx].channel;
1896 if (!survey->channel) {
1897 mutex_unlock(&hwsim->mutex);
1898 return -ENOENT;
1899 }
1900
1901 /*
1902 * Magically conjured dummy values --- this is only ok for simulated hardware.
1903 *
1904 * A real driver which cannot determine real values noise MUST NOT
1905 * report any, especially not a magically conjured ones :-)
1906 */
1907 survey->filled = SURVEY_INFO_NOISE_DBM |
1908 SURVEY_INFO_TIME |
1909 SURVEY_INFO_TIME_BUSY;
1910 survey->noise = -92;
1911 survey->time =
1912 jiffies_to_msecs(hwsim->survey_data[idx].end -
1913 hwsim->survey_data[idx].start);
1914 /* report 12.5% of channel time is used */
1915 survey->time_busy = survey->time/8;
1916 mutex_unlock(&hwsim->mutex);
1917
1918 return 0;
1919 }
1920
1921 #ifdef CONFIG_NL80211_TESTMODE
1922 /*
1923 * This section contains example code for using netlink
1924 * attributes with the testmode command in nl80211.
1925 */
1926
1927 /* These enums need to be kept in sync with userspace */
1928 enum hwsim_testmode_attr {
1929 __HWSIM_TM_ATTR_INVALID = 0,
1930 HWSIM_TM_ATTR_CMD = 1,
1931 HWSIM_TM_ATTR_PS = 2,
1932
1933 /* keep last */
1934 __HWSIM_TM_ATTR_AFTER_LAST,
1935 HWSIM_TM_ATTR_MAX = __HWSIM_TM_ATTR_AFTER_LAST - 1
1936 };
1937
1938 enum hwsim_testmode_cmd {
1939 HWSIM_TM_CMD_SET_PS = 0,
1940 HWSIM_TM_CMD_GET_PS = 1,
1941 HWSIM_TM_CMD_STOP_QUEUES = 2,
1942 HWSIM_TM_CMD_WAKE_QUEUES = 3,
1943 };
1944
1945 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
1946 [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
1947 [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
1948 };
1949
mac80211_hwsim_testmode_cmd(struct ieee80211_hw * hw,struct ieee80211_vif * vif,void * data,int len)1950 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
1951 struct ieee80211_vif *vif,
1952 void *data, int len)
1953 {
1954 struct mac80211_hwsim_data *hwsim = hw->priv;
1955 struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
1956 struct sk_buff *skb;
1957 int err, ps;
1958
1959 err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
1960 hwsim_testmode_policy, NULL);
1961 if (err)
1962 return err;
1963
1964 if (!tb[HWSIM_TM_ATTR_CMD])
1965 return -EINVAL;
1966
1967 switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
1968 case HWSIM_TM_CMD_SET_PS:
1969 if (!tb[HWSIM_TM_ATTR_PS])
1970 return -EINVAL;
1971 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
1972 return hwsim_fops_ps_write(hwsim, ps);
1973 case HWSIM_TM_CMD_GET_PS:
1974 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
1975 nla_total_size(sizeof(u32)));
1976 if (!skb)
1977 return -ENOMEM;
1978 if (nla_put_u32(skb, HWSIM_TM_ATTR_PS, hwsim->ps))
1979 goto nla_put_failure;
1980 return cfg80211_testmode_reply(skb);
1981 case HWSIM_TM_CMD_STOP_QUEUES:
1982 ieee80211_stop_queues(hw);
1983 return 0;
1984 case HWSIM_TM_CMD_WAKE_QUEUES:
1985 ieee80211_wake_queues(hw);
1986 return 0;
1987 default:
1988 return -EOPNOTSUPP;
1989 }
1990
1991 nla_put_failure:
1992 kfree_skb(skb);
1993 return -ENOBUFS;
1994 }
1995 #endif
1996
mac80211_hwsim_ampdu_action(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_ampdu_params * params)1997 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
1998 struct ieee80211_vif *vif,
1999 struct ieee80211_ampdu_params *params)
2000 {
2001 struct ieee80211_sta *sta = params->sta;
2002 enum ieee80211_ampdu_mlme_action action = params->action;
2003 u16 tid = params->tid;
2004
2005 switch (action) {
2006 case IEEE80211_AMPDU_TX_START:
2007 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
2008 break;
2009 case IEEE80211_AMPDU_TX_STOP_CONT:
2010 case IEEE80211_AMPDU_TX_STOP_FLUSH:
2011 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
2012 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
2013 break;
2014 case IEEE80211_AMPDU_TX_OPERATIONAL:
2015 break;
2016 case IEEE80211_AMPDU_RX_START:
2017 case IEEE80211_AMPDU_RX_STOP:
2018 break;
2019 default:
2020 return -EOPNOTSUPP;
2021 }
2022
2023 return 0;
2024 }
2025
mac80211_hwsim_flush(struct ieee80211_hw * hw,struct ieee80211_vif * vif,u32 queues,bool drop)2026 static void mac80211_hwsim_flush(struct ieee80211_hw *hw,
2027 struct ieee80211_vif *vif,
2028 u32 queues, bool drop)
2029 {
2030 /* Not implemented, queues only on kernel side */
2031 }
2032
hw_scan_work(struct work_struct * work)2033 static void hw_scan_work(struct work_struct *work)
2034 {
2035 struct mac80211_hwsim_data *hwsim =
2036 container_of(work, struct mac80211_hwsim_data, hw_scan.work);
2037 struct cfg80211_scan_request *req = hwsim->hw_scan_request;
2038 int dwell, i;
2039
2040 mutex_lock(&hwsim->mutex);
2041 if (hwsim->scan_chan_idx >= req->n_channels) {
2042 struct cfg80211_scan_info info = {
2043 .aborted = false,
2044 };
2045
2046 wiphy_dbg(hwsim->hw->wiphy, "hw scan complete\n");
2047 ieee80211_scan_completed(hwsim->hw, &info);
2048 hwsim->hw_scan_request = NULL;
2049 hwsim->hw_scan_vif = NULL;
2050 hwsim->tmp_chan = NULL;
2051 mutex_unlock(&hwsim->mutex);
2052 return;
2053 }
2054
2055 wiphy_dbg(hwsim->hw->wiphy, "hw scan %d MHz\n",
2056 req->channels[hwsim->scan_chan_idx]->center_freq);
2057
2058 hwsim->tmp_chan = req->channels[hwsim->scan_chan_idx];
2059 if (hwsim->tmp_chan->flags & (IEEE80211_CHAN_NO_IR |
2060 IEEE80211_CHAN_RADAR) ||
2061 !req->n_ssids) {
2062 dwell = 120;
2063 } else {
2064 dwell = 30;
2065 /* send probes */
2066 for (i = 0; i < req->n_ssids; i++) {
2067 struct sk_buff *probe;
2068 struct ieee80211_mgmt *mgmt;
2069
2070 probe = ieee80211_probereq_get(hwsim->hw,
2071 hwsim->scan_addr,
2072 req->ssids[i].ssid,
2073 req->ssids[i].ssid_len,
2074 req->ie_len);
2075 if (!probe)
2076 continue;
2077
2078 mgmt = (struct ieee80211_mgmt *) probe->data;
2079 memcpy(mgmt->da, req->bssid, ETH_ALEN);
2080 memcpy(mgmt->bssid, req->bssid, ETH_ALEN);
2081
2082 if (req->ie_len)
2083 skb_put_data(probe, req->ie, req->ie_len);
2084
2085 local_bh_disable();
2086 mac80211_hwsim_tx_frame(hwsim->hw, probe,
2087 hwsim->tmp_chan);
2088 local_bh_enable();
2089 }
2090 }
2091 ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan,
2092 msecs_to_jiffies(dwell));
2093 hwsim->survey_data[hwsim->scan_chan_idx].channel = hwsim->tmp_chan;
2094 hwsim->survey_data[hwsim->scan_chan_idx].start = jiffies;
2095 hwsim->survey_data[hwsim->scan_chan_idx].end =
2096 jiffies + msecs_to_jiffies(dwell);
2097 hwsim->scan_chan_idx++;
2098 mutex_unlock(&hwsim->mutex);
2099 }
2100
mac80211_hwsim_hw_scan(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_scan_request * hw_req)2101 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
2102 struct ieee80211_vif *vif,
2103 struct ieee80211_scan_request *hw_req)
2104 {
2105 struct mac80211_hwsim_data *hwsim = hw->priv;
2106 struct cfg80211_scan_request *req = &hw_req->req;
2107
2108 mutex_lock(&hwsim->mutex);
2109 if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
2110 mutex_unlock(&hwsim->mutex);
2111 return -EBUSY;
2112 }
2113 hwsim->hw_scan_request = req;
2114 hwsim->hw_scan_vif = vif;
2115 hwsim->scan_chan_idx = 0;
2116 if (req->flags & NL80211_SCAN_FLAG_RANDOM_ADDR)
2117 get_random_mask_addr(hwsim->scan_addr,
2118 hw_req->req.mac_addr,
2119 hw_req->req.mac_addr_mask);
2120 else
2121 memcpy(hwsim->scan_addr, vif->addr, ETH_ALEN);
2122 memset(hwsim->survey_data, 0, sizeof(hwsim->survey_data));
2123 mutex_unlock(&hwsim->mutex);
2124
2125 wiphy_dbg(hw->wiphy, "hwsim hw_scan request\n");
2126
2127 ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan, 0);
2128
2129 return 0;
2130 }
2131
mac80211_hwsim_cancel_hw_scan(struct ieee80211_hw * hw,struct ieee80211_vif * vif)2132 static void mac80211_hwsim_cancel_hw_scan(struct ieee80211_hw *hw,
2133 struct ieee80211_vif *vif)
2134 {
2135 struct mac80211_hwsim_data *hwsim = hw->priv;
2136 struct cfg80211_scan_info info = {
2137 .aborted = true,
2138 };
2139
2140 wiphy_dbg(hw->wiphy, "hwsim cancel_hw_scan\n");
2141
2142 cancel_delayed_work_sync(&hwsim->hw_scan);
2143
2144 mutex_lock(&hwsim->mutex);
2145 ieee80211_scan_completed(hwsim->hw, &info);
2146 hwsim->tmp_chan = NULL;
2147 hwsim->hw_scan_request = NULL;
2148 hwsim->hw_scan_vif = NULL;
2149 mutex_unlock(&hwsim->mutex);
2150 }
2151
mac80211_hwsim_sw_scan(struct ieee80211_hw * hw,struct ieee80211_vif * vif,const u8 * mac_addr)2152 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw,
2153 struct ieee80211_vif *vif,
2154 const u8 *mac_addr)
2155 {
2156 struct mac80211_hwsim_data *hwsim = hw->priv;
2157
2158 mutex_lock(&hwsim->mutex);
2159
2160 if (hwsim->scanning) {
2161 pr_debug("two hwsim sw_scans detected!\n");
2162 goto out;
2163 }
2164
2165 pr_debug("hwsim sw_scan request, prepping stuff\n");
2166
2167 memcpy(hwsim->scan_addr, mac_addr, ETH_ALEN);
2168 hwsim->scanning = true;
2169 memset(hwsim->survey_data, 0, sizeof(hwsim->survey_data));
2170
2171 out:
2172 mutex_unlock(&hwsim->mutex);
2173 }
2174
mac80211_hwsim_sw_scan_complete(struct ieee80211_hw * hw,struct ieee80211_vif * vif)2175 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw,
2176 struct ieee80211_vif *vif)
2177 {
2178 struct mac80211_hwsim_data *hwsim = hw->priv;
2179
2180 mutex_lock(&hwsim->mutex);
2181
2182 pr_debug("hwsim sw_scan_complete\n");
2183 hwsim->scanning = false;
2184 eth_zero_addr(hwsim->scan_addr);
2185
2186 mutex_unlock(&hwsim->mutex);
2187 }
2188
hw_roc_start(struct work_struct * work)2189 static void hw_roc_start(struct work_struct *work)
2190 {
2191 struct mac80211_hwsim_data *hwsim =
2192 container_of(work, struct mac80211_hwsim_data, roc_start.work);
2193
2194 mutex_lock(&hwsim->mutex);
2195
2196 wiphy_dbg(hwsim->hw->wiphy, "hwsim ROC begins\n");
2197 hwsim->tmp_chan = hwsim->roc_chan;
2198 ieee80211_ready_on_channel(hwsim->hw);
2199
2200 ieee80211_queue_delayed_work(hwsim->hw, &hwsim->roc_done,
2201 msecs_to_jiffies(hwsim->roc_duration));
2202
2203 mutex_unlock(&hwsim->mutex);
2204 }
2205
hw_roc_done(struct work_struct * work)2206 static void hw_roc_done(struct work_struct *work)
2207 {
2208 struct mac80211_hwsim_data *hwsim =
2209 container_of(work, struct mac80211_hwsim_data, roc_done.work);
2210
2211 mutex_lock(&hwsim->mutex);
2212 ieee80211_remain_on_channel_expired(hwsim->hw);
2213 hwsim->tmp_chan = NULL;
2214 mutex_unlock(&hwsim->mutex);
2215
2216 wiphy_dbg(hwsim->hw->wiphy, "hwsim ROC expired\n");
2217 }
2218
mac80211_hwsim_roc(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_channel * chan,int duration,enum ieee80211_roc_type type)2219 static int mac80211_hwsim_roc(struct ieee80211_hw *hw,
2220 struct ieee80211_vif *vif,
2221 struct ieee80211_channel *chan,
2222 int duration,
2223 enum ieee80211_roc_type type)
2224 {
2225 struct mac80211_hwsim_data *hwsim = hw->priv;
2226
2227 mutex_lock(&hwsim->mutex);
2228 if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
2229 mutex_unlock(&hwsim->mutex);
2230 return -EBUSY;
2231 }
2232
2233 hwsim->roc_chan = chan;
2234 hwsim->roc_duration = duration;
2235 mutex_unlock(&hwsim->mutex);
2236
2237 wiphy_dbg(hw->wiphy, "hwsim ROC (%d MHz, %d ms)\n",
2238 chan->center_freq, duration);
2239 ieee80211_queue_delayed_work(hw, &hwsim->roc_start, HZ/50);
2240
2241 return 0;
2242 }
2243
mac80211_hwsim_croc(struct ieee80211_hw * hw)2244 static int mac80211_hwsim_croc(struct ieee80211_hw *hw)
2245 {
2246 struct mac80211_hwsim_data *hwsim = hw->priv;
2247
2248 cancel_delayed_work_sync(&hwsim->roc_start);
2249 cancel_delayed_work_sync(&hwsim->roc_done);
2250
2251 mutex_lock(&hwsim->mutex);
2252 hwsim->tmp_chan = NULL;
2253 mutex_unlock(&hwsim->mutex);
2254
2255 wiphy_dbg(hw->wiphy, "hwsim ROC canceled\n");
2256
2257 return 0;
2258 }
2259
mac80211_hwsim_add_chanctx(struct ieee80211_hw * hw,struct ieee80211_chanctx_conf * ctx)2260 static int mac80211_hwsim_add_chanctx(struct ieee80211_hw *hw,
2261 struct ieee80211_chanctx_conf *ctx)
2262 {
2263 hwsim_set_chanctx_magic(ctx);
2264 wiphy_dbg(hw->wiphy,
2265 "add channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2266 ctx->def.chan->center_freq, ctx->def.width,
2267 ctx->def.center_freq1, ctx->def.center_freq2);
2268 return 0;
2269 }
2270
mac80211_hwsim_remove_chanctx(struct ieee80211_hw * hw,struct ieee80211_chanctx_conf * ctx)2271 static void mac80211_hwsim_remove_chanctx(struct ieee80211_hw *hw,
2272 struct ieee80211_chanctx_conf *ctx)
2273 {
2274 wiphy_dbg(hw->wiphy,
2275 "remove channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2276 ctx->def.chan->center_freq, ctx->def.width,
2277 ctx->def.center_freq1, ctx->def.center_freq2);
2278 hwsim_check_chanctx_magic(ctx);
2279 hwsim_clear_chanctx_magic(ctx);
2280 }
2281
mac80211_hwsim_change_chanctx(struct ieee80211_hw * hw,struct ieee80211_chanctx_conf * ctx,u32 changed)2282 static void mac80211_hwsim_change_chanctx(struct ieee80211_hw *hw,
2283 struct ieee80211_chanctx_conf *ctx,
2284 u32 changed)
2285 {
2286 hwsim_check_chanctx_magic(ctx);
2287 wiphy_dbg(hw->wiphy,
2288 "change channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2289 ctx->def.chan->center_freq, ctx->def.width,
2290 ctx->def.center_freq1, ctx->def.center_freq2);
2291 }
2292
mac80211_hwsim_assign_vif_chanctx(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_chanctx_conf * ctx)2293 static int mac80211_hwsim_assign_vif_chanctx(struct ieee80211_hw *hw,
2294 struct ieee80211_vif *vif,
2295 struct ieee80211_chanctx_conf *ctx)
2296 {
2297 hwsim_check_magic(vif);
2298 hwsim_check_chanctx_magic(ctx);
2299
2300 return 0;
2301 }
2302
mac80211_hwsim_unassign_vif_chanctx(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_chanctx_conf * ctx)2303 static void mac80211_hwsim_unassign_vif_chanctx(struct ieee80211_hw *hw,
2304 struct ieee80211_vif *vif,
2305 struct ieee80211_chanctx_conf *ctx)
2306 {
2307 hwsim_check_magic(vif);
2308 hwsim_check_chanctx_magic(ctx);
2309 }
2310
2311 static const char mac80211_hwsim_gstrings_stats[][ETH_GSTRING_LEN] = {
2312 "tx_pkts_nic",
2313 "tx_bytes_nic",
2314 "rx_pkts_nic",
2315 "rx_bytes_nic",
2316 "d_tx_dropped",
2317 "d_tx_failed",
2318 "d_ps_mode",
2319 "d_group",
2320 };
2321
2322 #define MAC80211_HWSIM_SSTATS_LEN ARRAY_SIZE(mac80211_hwsim_gstrings_stats)
2323
mac80211_hwsim_get_et_strings(struct ieee80211_hw * hw,struct ieee80211_vif * vif,u32 sset,u8 * data)2324 static void mac80211_hwsim_get_et_strings(struct ieee80211_hw *hw,
2325 struct ieee80211_vif *vif,
2326 u32 sset, u8 *data)
2327 {
2328 if (sset == ETH_SS_STATS)
2329 memcpy(data, *mac80211_hwsim_gstrings_stats,
2330 sizeof(mac80211_hwsim_gstrings_stats));
2331 }
2332
mac80211_hwsim_get_et_sset_count(struct ieee80211_hw * hw,struct ieee80211_vif * vif,int sset)2333 static int mac80211_hwsim_get_et_sset_count(struct ieee80211_hw *hw,
2334 struct ieee80211_vif *vif, int sset)
2335 {
2336 if (sset == ETH_SS_STATS)
2337 return MAC80211_HWSIM_SSTATS_LEN;
2338 return 0;
2339 }
2340
mac80211_hwsim_get_et_stats(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ethtool_stats * stats,u64 * data)2341 static void mac80211_hwsim_get_et_stats(struct ieee80211_hw *hw,
2342 struct ieee80211_vif *vif,
2343 struct ethtool_stats *stats, u64 *data)
2344 {
2345 struct mac80211_hwsim_data *ar = hw->priv;
2346 int i = 0;
2347
2348 data[i++] = ar->tx_pkts;
2349 data[i++] = ar->tx_bytes;
2350 data[i++] = ar->rx_pkts;
2351 data[i++] = ar->rx_bytes;
2352 data[i++] = ar->tx_dropped;
2353 data[i++] = ar->tx_failed;
2354 data[i++] = ar->ps;
2355 data[i++] = ar->group;
2356
2357 WARN_ON(i != MAC80211_HWSIM_SSTATS_LEN);
2358 }
2359
2360 #define HWSIM_COMMON_OPS \
2361 .tx = mac80211_hwsim_tx, \
2362 .start = mac80211_hwsim_start, \
2363 .stop = mac80211_hwsim_stop, \
2364 .add_interface = mac80211_hwsim_add_interface, \
2365 .change_interface = mac80211_hwsim_change_interface, \
2366 .remove_interface = mac80211_hwsim_remove_interface, \
2367 .config = mac80211_hwsim_config, \
2368 .configure_filter = mac80211_hwsim_configure_filter, \
2369 .bss_info_changed = mac80211_hwsim_bss_info_changed, \
2370 .sta_add = mac80211_hwsim_sta_add, \
2371 .sta_remove = mac80211_hwsim_sta_remove, \
2372 .sta_notify = mac80211_hwsim_sta_notify, \
2373 .set_tim = mac80211_hwsim_set_tim, \
2374 .conf_tx = mac80211_hwsim_conf_tx, \
2375 .get_survey = mac80211_hwsim_get_survey, \
2376 CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd) \
2377 .ampdu_action = mac80211_hwsim_ampdu_action, \
2378 .flush = mac80211_hwsim_flush, \
2379 .get_tsf = mac80211_hwsim_get_tsf, \
2380 .set_tsf = mac80211_hwsim_set_tsf, \
2381 .get_et_sset_count = mac80211_hwsim_get_et_sset_count, \
2382 .get_et_stats = mac80211_hwsim_get_et_stats, \
2383 .get_et_strings = mac80211_hwsim_get_et_strings,
2384
2385 static const struct ieee80211_ops mac80211_hwsim_ops = {
2386 HWSIM_COMMON_OPS
2387 .sw_scan_start = mac80211_hwsim_sw_scan,
2388 .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
2389 };
2390
2391 static const struct ieee80211_ops mac80211_hwsim_mchan_ops = {
2392 HWSIM_COMMON_OPS
2393 .hw_scan = mac80211_hwsim_hw_scan,
2394 .cancel_hw_scan = mac80211_hwsim_cancel_hw_scan,
2395 .sw_scan_start = NULL,
2396 .sw_scan_complete = NULL,
2397 .remain_on_channel = mac80211_hwsim_roc,
2398 .cancel_remain_on_channel = mac80211_hwsim_croc,
2399 .add_chanctx = mac80211_hwsim_add_chanctx,
2400 .remove_chanctx = mac80211_hwsim_remove_chanctx,
2401 .change_chanctx = mac80211_hwsim_change_chanctx,
2402 .assign_vif_chanctx = mac80211_hwsim_assign_vif_chanctx,
2403 .unassign_vif_chanctx = mac80211_hwsim_unassign_vif_chanctx,
2404 };
2405
2406 struct hwsim_new_radio_params {
2407 unsigned int channels;
2408 const char *reg_alpha2;
2409 const struct ieee80211_regdomain *regd;
2410 bool reg_strict;
2411 bool p2p_device;
2412 bool use_chanctx;
2413 bool destroy_on_close;
2414 const char *hwname;
2415 bool no_vif;
2416 const u8 *perm_addr;
2417 };
2418
hwsim_mcast_config_msg(struct sk_buff * mcast_skb,struct genl_info * info)2419 static void hwsim_mcast_config_msg(struct sk_buff *mcast_skb,
2420 struct genl_info *info)
2421 {
2422 if (info)
2423 genl_notify(&hwsim_genl_family, mcast_skb, info,
2424 HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2425 else
2426 genlmsg_multicast(&hwsim_genl_family, mcast_skb, 0,
2427 HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2428 }
2429
append_radio_msg(struct sk_buff * skb,int id,struct hwsim_new_radio_params * param)2430 static int append_radio_msg(struct sk_buff *skb, int id,
2431 struct hwsim_new_radio_params *param)
2432 {
2433 int ret;
2434
2435 ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
2436 if (ret < 0)
2437 return ret;
2438
2439 if (param->channels) {
2440 ret = nla_put_u32(skb, HWSIM_ATTR_CHANNELS, param->channels);
2441 if (ret < 0)
2442 return ret;
2443 }
2444
2445 if (param->reg_alpha2) {
2446 ret = nla_put(skb, HWSIM_ATTR_REG_HINT_ALPHA2, 2,
2447 param->reg_alpha2);
2448 if (ret < 0)
2449 return ret;
2450 }
2451
2452 if (param->regd) {
2453 int i;
2454
2455 for (i = 0; i < ARRAY_SIZE(hwsim_world_regdom_custom); i++) {
2456 if (hwsim_world_regdom_custom[i] != param->regd)
2457 continue;
2458
2459 ret = nla_put_u32(skb, HWSIM_ATTR_REG_CUSTOM_REG, i);
2460 if (ret < 0)
2461 return ret;
2462 break;
2463 }
2464 }
2465
2466 if (param->reg_strict) {
2467 ret = nla_put_flag(skb, HWSIM_ATTR_REG_STRICT_REG);
2468 if (ret < 0)
2469 return ret;
2470 }
2471
2472 if (param->p2p_device) {
2473 ret = nla_put_flag(skb, HWSIM_ATTR_SUPPORT_P2P_DEVICE);
2474 if (ret < 0)
2475 return ret;
2476 }
2477
2478 if (param->use_chanctx) {
2479 ret = nla_put_flag(skb, HWSIM_ATTR_USE_CHANCTX);
2480 if (ret < 0)
2481 return ret;
2482 }
2483
2484 if (param->hwname) {
2485 ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME,
2486 strlen(param->hwname), param->hwname);
2487 if (ret < 0)
2488 return ret;
2489 }
2490
2491 return 0;
2492 }
2493
hwsim_mcast_new_radio(int id,struct genl_info * info,struct hwsim_new_radio_params * param)2494 static void hwsim_mcast_new_radio(int id, struct genl_info *info,
2495 struct hwsim_new_radio_params *param)
2496 {
2497 struct sk_buff *mcast_skb;
2498 void *data;
2499
2500 mcast_skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2501 if (!mcast_skb)
2502 return;
2503
2504 data = genlmsg_put(mcast_skb, 0, 0, &hwsim_genl_family, 0,
2505 HWSIM_CMD_NEW_RADIO);
2506 if (!data)
2507 goto out_err;
2508
2509 if (append_radio_msg(mcast_skb, id, param) < 0)
2510 goto out_err;
2511
2512 genlmsg_end(mcast_skb, data);
2513
2514 hwsim_mcast_config_msg(mcast_skb, info);
2515 return;
2516
2517 out_err:
2518 nlmsg_free(mcast_skb);
2519 }
2520
2521 static const struct ieee80211_sband_iftype_data he_capa_2ghz = {
2522 /* TODO: should we support other types, e.g., P2P?*/
2523 .types_mask = BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_AP),
2524 .he_cap = {
2525 .has_he = true,
2526 .he_cap_elem = {
2527 .mac_cap_info[0] =
2528 IEEE80211_HE_MAC_CAP0_HTC_HE,
2529 .mac_cap_info[1] =
2530 IEEE80211_HE_MAC_CAP1_TF_MAC_PAD_DUR_16US |
2531 IEEE80211_HE_MAC_CAP1_MULTI_TID_AGG_QOS_8,
2532 .mac_cap_info[2] =
2533 IEEE80211_HE_MAC_CAP2_BSR |
2534 IEEE80211_HE_MAC_CAP2_MU_CASCADING |
2535 IEEE80211_HE_MAC_CAP2_ACK_EN,
2536 .mac_cap_info[3] =
2537 IEEE80211_HE_MAC_CAP3_GRP_ADDR_MULTI_STA_BA_DL_MU |
2538 IEEE80211_HE_MAC_CAP3_OMI_CONTROL |
2539 IEEE80211_HE_MAC_CAP3_MAX_A_AMPDU_LEN_EXP_VHT_2,
2540 .mac_cap_info[4] = IEEE80211_HE_MAC_CAP4_AMDSU_IN_AMPDU,
2541 .phy_cap_info[0] =
2542 IEEE80211_HE_PHY_CAP0_DUAL_BAND,
2543 .phy_cap_info[1] =
2544 IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK |
2545 IEEE80211_HE_PHY_CAP1_DEVICE_CLASS_A |
2546 IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD |
2547 IEEE80211_HE_PHY_CAP1_MIDAMBLE_RX_MAX_NSTS,
2548 .phy_cap_info[2] =
2549 IEEE80211_HE_PHY_CAP2_NDP_4x_LTF_AND_3_2US |
2550 IEEE80211_HE_PHY_CAP2_STBC_TX_UNDER_80MHZ |
2551 IEEE80211_HE_PHY_CAP2_STBC_RX_UNDER_80MHZ |
2552 IEEE80211_HE_PHY_CAP2_UL_MU_FULL_MU_MIMO |
2553 IEEE80211_HE_PHY_CAP2_UL_MU_PARTIAL_MU_MIMO,
2554
2555 /* Leave all the other PHY capability bytes unset, as
2556 * DCM, beam forming, RU and PPE threshold information
2557 * are not supported
2558 */
2559 },
2560 .he_mcs_nss_supp = {
2561 .rx_mcs_80 = cpu_to_le16(0xfffa),
2562 .tx_mcs_80 = cpu_to_le16(0xfffa),
2563 .rx_mcs_160 = cpu_to_le16(0xffff),
2564 .tx_mcs_160 = cpu_to_le16(0xffff),
2565 .rx_mcs_80p80 = cpu_to_le16(0xffff),
2566 .tx_mcs_80p80 = cpu_to_le16(0xffff),
2567 },
2568 },
2569 };
2570
2571 static const struct ieee80211_sband_iftype_data he_capa_5ghz = {
2572 /* TODO: should we support other types, e.g., P2P?*/
2573 .types_mask = BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_AP),
2574 .he_cap = {
2575 .has_he = true,
2576 .he_cap_elem = {
2577 .mac_cap_info[0] =
2578 IEEE80211_HE_MAC_CAP0_HTC_HE,
2579 .mac_cap_info[1] =
2580 IEEE80211_HE_MAC_CAP1_TF_MAC_PAD_DUR_16US |
2581 IEEE80211_HE_MAC_CAP1_MULTI_TID_AGG_QOS_8,
2582 .mac_cap_info[2] =
2583 IEEE80211_HE_MAC_CAP2_BSR |
2584 IEEE80211_HE_MAC_CAP2_MU_CASCADING |
2585 IEEE80211_HE_MAC_CAP2_ACK_EN,
2586 .mac_cap_info[3] =
2587 IEEE80211_HE_MAC_CAP3_GRP_ADDR_MULTI_STA_BA_DL_MU |
2588 IEEE80211_HE_MAC_CAP3_OMI_CONTROL |
2589 IEEE80211_HE_MAC_CAP3_MAX_A_AMPDU_LEN_EXP_VHT_2,
2590 .mac_cap_info[4] = IEEE80211_HE_MAC_CAP4_AMDSU_IN_AMPDU,
2591 .phy_cap_info[0] =
2592 IEEE80211_HE_PHY_CAP0_DUAL_BAND |
2593 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G |
2594 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G |
2595 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G,
2596 .phy_cap_info[1] =
2597 IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK |
2598 IEEE80211_HE_PHY_CAP1_DEVICE_CLASS_A |
2599 IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD |
2600 IEEE80211_HE_PHY_CAP1_MIDAMBLE_RX_MAX_NSTS,
2601 .phy_cap_info[2] =
2602 IEEE80211_HE_PHY_CAP2_NDP_4x_LTF_AND_3_2US |
2603 IEEE80211_HE_PHY_CAP2_STBC_TX_UNDER_80MHZ |
2604 IEEE80211_HE_PHY_CAP2_STBC_RX_UNDER_80MHZ |
2605 IEEE80211_HE_PHY_CAP2_UL_MU_FULL_MU_MIMO |
2606 IEEE80211_HE_PHY_CAP2_UL_MU_PARTIAL_MU_MIMO,
2607
2608 /* Leave all the other PHY capability bytes unset, as
2609 * DCM, beam forming, RU and PPE threshold information
2610 * are not supported
2611 */
2612 },
2613 .he_mcs_nss_supp = {
2614 .rx_mcs_80 = cpu_to_le16(0xfffa),
2615 .tx_mcs_80 = cpu_to_le16(0xfffa),
2616 .rx_mcs_160 = cpu_to_le16(0xfffa),
2617 .tx_mcs_160 = cpu_to_le16(0xfffa),
2618 .rx_mcs_80p80 = cpu_to_le16(0xfffa),
2619 .tx_mcs_80p80 = cpu_to_le16(0xfffa),
2620 },
2621 },
2622 };
2623
mac80211_hswim_he_capab(struct ieee80211_supported_band * sband)2624 static void mac80211_hswim_he_capab(struct ieee80211_supported_band *sband)
2625 {
2626 if (sband->band == NL80211_BAND_2GHZ)
2627 sband->iftype_data =
2628 (struct ieee80211_sband_iftype_data *)&he_capa_2ghz;
2629 else if (sband->band == NL80211_BAND_5GHZ)
2630 sband->iftype_data =
2631 (struct ieee80211_sband_iftype_data *)&he_capa_5ghz;
2632 else
2633 return;
2634
2635 sband->n_iftype_data = 1;
2636 }
2637
mac80211_hwsim_new_radio(struct genl_info * info,struct hwsim_new_radio_params * param)2638 static int mac80211_hwsim_new_radio(struct genl_info *info,
2639 struct hwsim_new_radio_params *param)
2640 {
2641 int err;
2642 u8 addr[ETH_ALEN];
2643 struct mac80211_hwsim_data *data;
2644 struct ieee80211_hw *hw;
2645 enum nl80211_band band;
2646 const struct ieee80211_ops *ops = &mac80211_hwsim_ops;
2647 struct net *net;
2648 int idx;
2649
2650 if (WARN_ON(param->channels > 1 && !param->use_chanctx))
2651 return -EINVAL;
2652
2653 spin_lock_bh(&hwsim_radio_lock);
2654 idx = hwsim_radio_idx++;
2655 spin_unlock_bh(&hwsim_radio_lock);
2656
2657 if (param->use_chanctx)
2658 ops = &mac80211_hwsim_mchan_ops;
2659 hw = ieee80211_alloc_hw_nm(sizeof(*data), ops, param->hwname);
2660 if (!hw) {
2661 pr_debug("mac80211_hwsim: ieee80211_alloc_hw failed\n");
2662 err = -ENOMEM;
2663 goto failed;
2664 }
2665
2666 /* ieee80211_alloc_hw_nm may have used a default name */
2667 param->hwname = wiphy_name(hw->wiphy);
2668
2669 if (info)
2670 net = genl_info_net(info);
2671 else
2672 net = &init_net;
2673 wiphy_net_set(hw->wiphy, net);
2674
2675 data = hw->priv;
2676 data->hw = hw;
2677
2678 data->dev = device_create(hwsim_class, NULL, 0, hw, "hwsim%d", idx);
2679 if (IS_ERR(data->dev)) {
2680 printk(KERN_DEBUG
2681 "mac80211_hwsim: device_create failed (%ld)\n",
2682 PTR_ERR(data->dev));
2683 err = -ENOMEM;
2684 goto failed_drvdata;
2685 }
2686 data->dev->driver = &mac80211_hwsim_driver.driver;
2687 err = device_bind_driver(data->dev);
2688 if (err != 0) {
2689 pr_debug("mac80211_hwsim: device_bind_driver failed (%d)\n",
2690 err);
2691 goto failed_bind;
2692 }
2693
2694 skb_queue_head_init(&data->pending);
2695
2696 SET_IEEE80211_DEV(hw, data->dev);
2697 if (!param->perm_addr) {
2698 eth_zero_addr(addr);
2699 addr[0] = 0x02;
2700 addr[3] = idx >> 8;
2701 addr[4] = idx;
2702 memcpy(data->addresses[0].addr, addr, ETH_ALEN);
2703 /* Why need here second address ? */
2704 memcpy(data->addresses[1].addr, addr, ETH_ALEN);
2705 data->addresses[1].addr[0] |= 0x40;
2706 hw->wiphy->n_addresses = 2;
2707 hw->wiphy->addresses = data->addresses;
2708 /* possible address clash is checked at hash table insertion */
2709 } else {
2710 memcpy(data->addresses[0].addr, param->perm_addr, ETH_ALEN);
2711 /* compatibility with automatically generated mac addr */
2712 memcpy(data->addresses[1].addr, param->perm_addr, ETH_ALEN);
2713 hw->wiphy->n_addresses = 2;
2714 hw->wiphy->addresses = data->addresses;
2715 }
2716
2717 data->channels = param->channels;
2718 data->use_chanctx = param->use_chanctx;
2719 data->idx = idx;
2720 data->destroy_on_close = param->destroy_on_close;
2721 if (info)
2722 data->portid = info->snd_portid;
2723
2724 if (data->use_chanctx) {
2725 hw->wiphy->max_scan_ssids = 255;
2726 hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
2727 hw->wiphy->max_remain_on_channel_duration = 1000;
2728 hw->wiphy->iface_combinations = &data->if_combination;
2729 if (param->p2p_device)
2730 data->if_combination = hwsim_if_comb_p2p_dev[0];
2731 else
2732 data->if_combination = hwsim_if_comb[0];
2733 hw->wiphy->n_iface_combinations = 1;
2734 /* For channels > 1 DFS is not allowed */
2735 data->if_combination.radar_detect_widths = 0;
2736 data->if_combination.num_different_channels = data->channels;
2737 } else if (param->p2p_device) {
2738 hw->wiphy->iface_combinations = hwsim_if_comb_p2p_dev;
2739 hw->wiphy->n_iface_combinations =
2740 ARRAY_SIZE(hwsim_if_comb_p2p_dev);
2741 } else {
2742 hw->wiphy->iface_combinations = hwsim_if_comb;
2743 hw->wiphy->n_iface_combinations = ARRAY_SIZE(hwsim_if_comb);
2744 }
2745
2746 INIT_DELAYED_WORK(&data->roc_start, hw_roc_start);
2747 INIT_DELAYED_WORK(&data->roc_done, hw_roc_done);
2748 INIT_DELAYED_WORK(&data->hw_scan, hw_scan_work);
2749
2750 hw->queues = 5;
2751 hw->offchannel_tx_hw_queue = 4;
2752 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
2753 BIT(NL80211_IFTYPE_AP) |
2754 BIT(NL80211_IFTYPE_P2P_CLIENT) |
2755 BIT(NL80211_IFTYPE_P2P_GO) |
2756 BIT(NL80211_IFTYPE_ADHOC) |
2757 BIT(NL80211_IFTYPE_MESH_POINT);
2758
2759 if (param->p2p_device)
2760 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_P2P_DEVICE);
2761
2762 ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
2763 ieee80211_hw_set(hw, CHANCTX_STA_CSA);
2764 ieee80211_hw_set(hw, SUPPORTS_HT_CCK_RATES);
2765 ieee80211_hw_set(hw, QUEUE_CONTROL);
2766 ieee80211_hw_set(hw, WANT_MONITOR_VIF);
2767 ieee80211_hw_set(hw, AMPDU_AGGREGATION);
2768 ieee80211_hw_set(hw, MFP_CAPABLE);
2769 ieee80211_hw_set(hw, SIGNAL_DBM);
2770 ieee80211_hw_set(hw, SUPPORTS_PS);
2771 ieee80211_hw_set(hw, TDLS_WIDER_BW);
2772 if (rctbl)
2773 ieee80211_hw_set(hw, SUPPORTS_RC_TABLE);
2774
2775 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS |
2776 WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL |
2777 WIPHY_FLAG_AP_UAPSD |
2778 WIPHY_FLAG_HAS_CHANNEL_SWITCH;
2779 hw->wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR |
2780 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
2781 NL80211_FEATURE_STATIC_SMPS |
2782 NL80211_FEATURE_DYNAMIC_SMPS |
2783 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
2784 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_VHT_IBSS);
2785
2786 /* ask mac80211 to reserve space for magic */
2787 hw->vif_data_size = sizeof(struct hwsim_vif_priv);
2788 hw->sta_data_size = sizeof(struct hwsim_sta_priv);
2789 hw->chanctx_data_size = sizeof(struct hwsim_chanctx_priv);
2790
2791 memcpy(data->channels_2ghz, hwsim_channels_2ghz,
2792 sizeof(hwsim_channels_2ghz));
2793 memcpy(data->channels_5ghz, hwsim_channels_5ghz,
2794 sizeof(hwsim_channels_5ghz));
2795 memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
2796
2797 for (band = NL80211_BAND_2GHZ; band < NUM_NL80211_BANDS; band++) {
2798 struct ieee80211_supported_band *sband = &data->bands[band];
2799
2800 sband->band = band;
2801
2802 switch (band) {
2803 case NL80211_BAND_2GHZ:
2804 sband->channels = data->channels_2ghz;
2805 sband->n_channels = ARRAY_SIZE(hwsim_channels_2ghz);
2806 sband->bitrates = data->rates;
2807 sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
2808 break;
2809 case NL80211_BAND_5GHZ:
2810 sband->channels = data->channels_5ghz;
2811 sband->n_channels = ARRAY_SIZE(hwsim_channels_5ghz);
2812 sband->bitrates = data->rates + 4;
2813 sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
2814
2815 sband->vht_cap.vht_supported = true;
2816 sband->vht_cap.cap =
2817 IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 |
2818 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ |
2819 IEEE80211_VHT_CAP_RXLDPC |
2820 IEEE80211_VHT_CAP_SHORT_GI_80 |
2821 IEEE80211_VHT_CAP_SHORT_GI_160 |
2822 IEEE80211_VHT_CAP_TXSTBC |
2823 IEEE80211_VHT_CAP_RXSTBC_4 |
2824 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
2825 sband->vht_cap.vht_mcs.rx_mcs_map =
2826 cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_9 << 0 |
2827 IEEE80211_VHT_MCS_SUPPORT_0_9 << 2 |
2828 IEEE80211_VHT_MCS_SUPPORT_0_9 << 4 |
2829 IEEE80211_VHT_MCS_SUPPORT_0_9 << 6 |
2830 IEEE80211_VHT_MCS_SUPPORT_0_9 << 8 |
2831 IEEE80211_VHT_MCS_SUPPORT_0_9 << 10 |
2832 IEEE80211_VHT_MCS_SUPPORT_0_9 << 12 |
2833 IEEE80211_VHT_MCS_SUPPORT_0_9 << 14);
2834 sband->vht_cap.vht_mcs.tx_mcs_map =
2835 sband->vht_cap.vht_mcs.rx_mcs_map;
2836 break;
2837 default:
2838 continue;
2839 }
2840
2841 sband->ht_cap.ht_supported = true;
2842 sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
2843 IEEE80211_HT_CAP_GRN_FLD |
2844 IEEE80211_HT_CAP_SGI_20 |
2845 IEEE80211_HT_CAP_SGI_40 |
2846 IEEE80211_HT_CAP_DSSSCCK40;
2847 sband->ht_cap.ampdu_factor = 0x3;
2848 sband->ht_cap.ampdu_density = 0x6;
2849 memset(&sband->ht_cap.mcs, 0,
2850 sizeof(sband->ht_cap.mcs));
2851 sband->ht_cap.mcs.rx_mask[0] = 0xff;
2852 sband->ht_cap.mcs.rx_mask[1] = 0xff;
2853 sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2854
2855 mac80211_hswim_he_capab(sband);
2856
2857 hw->wiphy->bands[band] = sband;
2858 }
2859
2860 /* By default all radios belong to the first group */
2861 data->group = 1;
2862 mutex_init(&data->mutex);
2863
2864 data->netgroup = hwsim_net_get_netgroup(net);
2865 data->wmediumd = hwsim_net_get_wmediumd(net);
2866
2867 /* Enable frame retransmissions for lossy channels */
2868 hw->max_rates = 4;
2869 hw->max_rate_tries = 11;
2870
2871 hw->wiphy->vendor_commands = mac80211_hwsim_vendor_commands;
2872 hw->wiphy->n_vendor_commands =
2873 ARRAY_SIZE(mac80211_hwsim_vendor_commands);
2874 hw->wiphy->vendor_events = mac80211_hwsim_vendor_events;
2875 hw->wiphy->n_vendor_events = ARRAY_SIZE(mac80211_hwsim_vendor_events);
2876
2877 if (param->reg_strict)
2878 hw->wiphy->regulatory_flags |= REGULATORY_STRICT_REG;
2879 if (param->regd) {
2880 data->regd = param->regd;
2881 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG;
2882 wiphy_apply_custom_regulatory(hw->wiphy, param->regd);
2883 /* give the regulatory workqueue a chance to run */
2884 schedule_timeout_interruptible(1);
2885 }
2886
2887 if (param->no_vif)
2888 ieee80211_hw_set(hw, NO_AUTO_VIF);
2889
2890 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST);
2891
2892 err = ieee80211_register_hw(hw);
2893 if (err < 0) {
2894 pr_debug("mac80211_hwsim: ieee80211_register_hw failed (%d)\n",
2895 err);
2896 goto failed_hw;
2897 }
2898
2899 wiphy_dbg(hw->wiphy, "hwaddr %pM registered\n", hw->wiphy->perm_addr);
2900
2901 if (param->reg_alpha2) {
2902 data->alpha2[0] = param->reg_alpha2[0];
2903 data->alpha2[1] = param->reg_alpha2[1];
2904 regulatory_hint(hw->wiphy, param->reg_alpha2);
2905 }
2906
2907 data->debugfs = debugfs_create_dir("hwsim", hw->wiphy->debugfsdir);
2908 debugfs_create_file("ps", 0666, data->debugfs, data, &hwsim_fops_ps);
2909 debugfs_create_file("group", 0666, data->debugfs, data,
2910 &hwsim_fops_group);
2911 if (!data->use_chanctx)
2912 debugfs_create_file("dfs_simulate_radar", 0222,
2913 data->debugfs,
2914 data, &hwsim_simulate_radar);
2915
2916 tasklet_hrtimer_init(&data->beacon_timer,
2917 mac80211_hwsim_beacon,
2918 CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
2919
2920 spin_lock_bh(&hwsim_radio_lock);
2921 err = rhashtable_insert_fast(&hwsim_radios_rht, &data->rht,
2922 hwsim_rht_params);
2923 if (err < 0) {
2924 if (info) {
2925 GENL_SET_ERR_MSG(info, "perm addr already present");
2926 NL_SET_BAD_ATTR(info->extack,
2927 info->attrs[HWSIM_ATTR_PERM_ADDR]);
2928 }
2929 spin_unlock_bh(&hwsim_radio_lock);
2930 goto failed_final_insert;
2931 }
2932
2933 list_add_tail(&data->list, &hwsim_radios);
2934 hwsim_radios_generation++;
2935 spin_unlock_bh(&hwsim_radio_lock);
2936
2937 hwsim_mcast_new_radio(idx, info, param);
2938
2939 return idx;
2940
2941 failed_final_insert:
2942 debugfs_remove_recursive(data->debugfs);
2943 ieee80211_unregister_hw(data->hw);
2944 failed_hw:
2945 device_release_driver(data->dev);
2946 failed_bind:
2947 device_unregister(data->dev);
2948 failed_drvdata:
2949 ieee80211_free_hw(hw);
2950 failed:
2951 return err;
2952 }
2953
hwsim_mcast_del_radio(int id,const char * hwname,struct genl_info * info)2954 static void hwsim_mcast_del_radio(int id, const char *hwname,
2955 struct genl_info *info)
2956 {
2957 struct sk_buff *skb;
2958 void *data;
2959 int ret;
2960
2961 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2962 if (!skb)
2963 return;
2964
2965 data = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
2966 HWSIM_CMD_DEL_RADIO);
2967 if (!data)
2968 goto error;
2969
2970 ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
2971 if (ret < 0)
2972 goto error;
2973
2974 ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME, strlen(hwname),
2975 hwname);
2976 if (ret < 0)
2977 goto error;
2978
2979 genlmsg_end(skb, data);
2980
2981 hwsim_mcast_config_msg(skb, info);
2982
2983 return;
2984
2985 error:
2986 nlmsg_free(skb);
2987 }
2988
mac80211_hwsim_del_radio(struct mac80211_hwsim_data * data,const char * hwname,struct genl_info * info)2989 static void mac80211_hwsim_del_radio(struct mac80211_hwsim_data *data,
2990 const char *hwname,
2991 struct genl_info *info)
2992 {
2993 hwsim_mcast_del_radio(data->idx, hwname, info);
2994 debugfs_remove_recursive(data->debugfs);
2995 ieee80211_unregister_hw(data->hw);
2996 device_release_driver(data->dev);
2997 device_unregister(data->dev);
2998 ieee80211_free_hw(data->hw);
2999 }
3000
mac80211_hwsim_get_radio(struct sk_buff * skb,struct mac80211_hwsim_data * data,u32 portid,u32 seq,struct netlink_callback * cb,int flags)3001 static int mac80211_hwsim_get_radio(struct sk_buff *skb,
3002 struct mac80211_hwsim_data *data,
3003 u32 portid, u32 seq,
3004 struct netlink_callback *cb, int flags)
3005 {
3006 void *hdr;
3007 struct hwsim_new_radio_params param = { };
3008 int res = -EMSGSIZE;
3009
3010 hdr = genlmsg_put(skb, portid, seq, &hwsim_genl_family, flags,
3011 HWSIM_CMD_GET_RADIO);
3012 if (!hdr)
3013 return -EMSGSIZE;
3014
3015 if (cb)
3016 genl_dump_check_consistent(cb, hdr);
3017
3018 if (data->alpha2[0] && data->alpha2[1])
3019 param.reg_alpha2 = data->alpha2;
3020
3021 param.reg_strict = !!(data->hw->wiphy->regulatory_flags &
3022 REGULATORY_STRICT_REG);
3023 param.p2p_device = !!(data->hw->wiphy->interface_modes &
3024 BIT(NL80211_IFTYPE_P2P_DEVICE));
3025 param.use_chanctx = data->use_chanctx;
3026 param.regd = data->regd;
3027 param.channels = data->channels;
3028 param.hwname = wiphy_name(data->hw->wiphy);
3029
3030 res = append_radio_msg(skb, data->idx, ¶m);
3031 if (res < 0)
3032 goto out_err;
3033
3034 genlmsg_end(skb, hdr);
3035 return 0;
3036
3037 out_err:
3038 genlmsg_cancel(skb, hdr);
3039 return res;
3040 }
3041
mac80211_hwsim_free(void)3042 static void mac80211_hwsim_free(void)
3043 {
3044 struct mac80211_hwsim_data *data;
3045
3046 spin_lock_bh(&hwsim_radio_lock);
3047 while ((data = list_first_entry_or_null(&hwsim_radios,
3048 struct mac80211_hwsim_data,
3049 list))) {
3050 list_del(&data->list);
3051 spin_unlock_bh(&hwsim_radio_lock);
3052 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
3053 NULL);
3054 spin_lock_bh(&hwsim_radio_lock);
3055 }
3056 spin_unlock_bh(&hwsim_radio_lock);
3057 class_destroy(hwsim_class);
3058 }
3059
3060 static const struct net_device_ops hwsim_netdev_ops = {
3061 .ndo_start_xmit = hwsim_mon_xmit,
3062 .ndo_set_mac_address = eth_mac_addr,
3063 .ndo_validate_addr = eth_validate_addr,
3064 };
3065
hwsim_mon_setup(struct net_device * dev)3066 static void hwsim_mon_setup(struct net_device *dev)
3067 {
3068 dev->netdev_ops = &hwsim_netdev_ops;
3069 dev->needs_free_netdev = true;
3070 ether_setup(dev);
3071 dev->priv_flags |= IFF_NO_QUEUE;
3072 dev->type = ARPHRD_IEEE80211_RADIOTAP;
3073 eth_zero_addr(dev->dev_addr);
3074 dev->dev_addr[0] = 0x12;
3075 }
3076
get_hwsim_data_ref_from_addr(const u8 * addr)3077 static struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(const u8 *addr)
3078 {
3079 return rhashtable_lookup_fast(&hwsim_radios_rht,
3080 addr,
3081 hwsim_rht_params);
3082 }
3083
hwsim_register_wmediumd(struct net * net,u32 portid)3084 static void hwsim_register_wmediumd(struct net *net, u32 portid)
3085 {
3086 struct mac80211_hwsim_data *data;
3087
3088 hwsim_net_set_wmediumd(net, portid);
3089
3090 spin_lock_bh(&hwsim_radio_lock);
3091 list_for_each_entry(data, &hwsim_radios, list) {
3092 if (data->netgroup == hwsim_net_get_netgroup(net))
3093 data->wmediumd = portid;
3094 }
3095 spin_unlock_bh(&hwsim_radio_lock);
3096 }
3097
hwsim_tx_info_frame_received_nl(struct sk_buff * skb_2,struct genl_info * info)3098 static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
3099 struct genl_info *info)
3100 {
3101
3102 struct ieee80211_hdr *hdr;
3103 struct mac80211_hwsim_data *data2;
3104 struct ieee80211_tx_info *txi;
3105 struct hwsim_tx_rate *tx_attempts;
3106 u64 ret_skb_cookie;
3107 struct sk_buff *skb, *tmp;
3108 const u8 *src;
3109 unsigned int hwsim_flags;
3110 int i;
3111 bool found = false;
3112
3113 if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
3114 !info->attrs[HWSIM_ATTR_FLAGS] ||
3115 !info->attrs[HWSIM_ATTR_COOKIE] ||
3116 !info->attrs[HWSIM_ATTR_SIGNAL] ||
3117 !info->attrs[HWSIM_ATTR_TX_INFO])
3118 goto out;
3119
3120 src = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
3121 hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
3122 ret_skb_cookie = nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
3123
3124 data2 = get_hwsim_data_ref_from_addr(src);
3125 if (!data2)
3126 goto out;
3127
3128 if (hwsim_net_get_netgroup(genl_info_net(info)) != data2->netgroup)
3129 goto out;
3130
3131 if (info->snd_portid != data2->wmediumd)
3132 goto out;
3133
3134 /* look for the skb matching the cookie passed back from user */
3135 skb_queue_walk_safe(&data2->pending, skb, tmp) {
3136 u64 skb_cookie;
3137
3138 txi = IEEE80211_SKB_CB(skb);
3139 skb_cookie = (u64)(uintptr_t)txi->rate_driver_data[0];
3140
3141 if (skb_cookie == ret_skb_cookie) {
3142 skb_unlink(skb, &data2->pending);
3143 found = true;
3144 break;
3145 }
3146 }
3147
3148 /* not found */
3149 if (!found)
3150 goto out;
3151
3152 /* Tx info received because the frame was broadcasted on user space,
3153 so we get all the necessary info: tx attempts and skb control buff */
3154
3155 tx_attempts = (struct hwsim_tx_rate *)nla_data(
3156 info->attrs[HWSIM_ATTR_TX_INFO]);
3157
3158 /* now send back TX status */
3159 txi = IEEE80211_SKB_CB(skb);
3160
3161 ieee80211_tx_info_clear_status(txi);
3162
3163 for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
3164 txi->status.rates[i].idx = tx_attempts[i].idx;
3165 txi->status.rates[i].count = tx_attempts[i].count;
3166 }
3167
3168 txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
3169
3170 if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
3171 (hwsim_flags & HWSIM_TX_STAT_ACK)) {
3172 if (skb->len >= 16) {
3173 hdr = (struct ieee80211_hdr *) skb->data;
3174 mac80211_hwsim_monitor_ack(data2->channel,
3175 hdr->addr2);
3176 }
3177 txi->flags |= IEEE80211_TX_STAT_ACK;
3178 }
3179 ieee80211_tx_status_irqsafe(data2->hw, skb);
3180 return 0;
3181 out:
3182 return -EINVAL;
3183
3184 }
3185
hwsim_cloned_frame_received_nl(struct sk_buff * skb_2,struct genl_info * info)3186 static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
3187 struct genl_info *info)
3188 {
3189 struct mac80211_hwsim_data *data2;
3190 struct ieee80211_rx_status rx_status;
3191 const u8 *dst;
3192 int frame_data_len;
3193 void *frame_data;
3194 struct sk_buff *skb = NULL;
3195
3196 if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
3197 !info->attrs[HWSIM_ATTR_FRAME] ||
3198 !info->attrs[HWSIM_ATTR_RX_RATE] ||
3199 !info->attrs[HWSIM_ATTR_SIGNAL])
3200 goto out;
3201
3202 dst = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
3203 frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
3204 frame_data = (void *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
3205
3206 /* Allocate new skb here */
3207 skb = alloc_skb(frame_data_len, GFP_KERNEL);
3208 if (skb == NULL)
3209 goto err;
3210
3211 if (frame_data_len > IEEE80211_MAX_DATA_LEN)
3212 goto err;
3213
3214 /* Copy the data */
3215 skb_put_data(skb, frame_data, frame_data_len);
3216
3217 data2 = get_hwsim_data_ref_from_addr(dst);
3218 if (!data2)
3219 goto out;
3220
3221 if (hwsim_net_get_netgroup(genl_info_net(info)) != data2->netgroup)
3222 goto out;
3223
3224 if (info->snd_portid != data2->wmediumd)
3225 goto out;
3226
3227 /* check if radio is configured properly */
3228
3229 if (data2->idle || !data2->started)
3230 goto out;
3231
3232 /* A frame is received from user space */
3233 memset(&rx_status, 0, sizeof(rx_status));
3234 if (info->attrs[HWSIM_ATTR_FREQ]) {
3235 /* throw away off-channel packets, but allow both the temporary
3236 * ("hw" scan/remain-on-channel) and regular channel, since the
3237 * internal datapath also allows this
3238 */
3239 mutex_lock(&data2->mutex);
3240 rx_status.freq = nla_get_u32(info->attrs[HWSIM_ATTR_FREQ]);
3241
3242 if (rx_status.freq != data2->channel->center_freq &&
3243 (!data2->tmp_chan ||
3244 rx_status.freq != data2->tmp_chan->center_freq)) {
3245 mutex_unlock(&data2->mutex);
3246 goto out;
3247 }
3248 mutex_unlock(&data2->mutex);
3249 } else {
3250 rx_status.freq = data2->channel->center_freq;
3251 }
3252
3253 rx_status.band = data2->channel->band;
3254 rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
3255 rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
3256
3257 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
3258 data2->rx_pkts++;
3259 data2->rx_bytes += skb->len;
3260 ieee80211_rx_irqsafe(data2->hw, skb);
3261
3262 return 0;
3263 err:
3264 pr_debug("mac80211_hwsim: error occurred in %s\n", __func__);
3265 out:
3266 dev_kfree_skb(skb);
3267 return -EINVAL;
3268 }
3269
hwsim_register_received_nl(struct sk_buff * skb_2,struct genl_info * info)3270 static int hwsim_register_received_nl(struct sk_buff *skb_2,
3271 struct genl_info *info)
3272 {
3273 struct net *net = genl_info_net(info);
3274 struct mac80211_hwsim_data *data;
3275 int chans = 1;
3276
3277 spin_lock_bh(&hwsim_radio_lock);
3278 list_for_each_entry(data, &hwsim_radios, list)
3279 chans = max(chans, data->channels);
3280 spin_unlock_bh(&hwsim_radio_lock);
3281
3282 /* In the future we should revise the userspace API and allow it
3283 * to set a flag that it does support multi-channel, then we can
3284 * let this pass conditionally on the flag.
3285 * For current userspace, prohibit it since it won't work right.
3286 */
3287 if (chans > 1)
3288 return -EOPNOTSUPP;
3289
3290 if (hwsim_net_get_wmediumd(net))
3291 return -EBUSY;
3292
3293 hwsim_register_wmediumd(net, info->snd_portid);
3294
3295 pr_debug("mac80211_hwsim: received a REGISTER, "
3296 "switching to wmediumd mode with pid %d\n", info->snd_portid);
3297
3298 return 0;
3299 }
3300
hwsim_new_radio_nl(struct sk_buff * msg,struct genl_info * info)3301 static int hwsim_new_radio_nl(struct sk_buff *msg, struct genl_info *info)
3302 {
3303 struct hwsim_new_radio_params param = { 0 };
3304 const char *hwname = NULL;
3305 int ret;
3306
3307 param.reg_strict = info->attrs[HWSIM_ATTR_REG_STRICT_REG];
3308 param.p2p_device = info->attrs[HWSIM_ATTR_SUPPORT_P2P_DEVICE];
3309 param.channels = channels;
3310 param.destroy_on_close =
3311 info->attrs[HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE];
3312
3313 if (info->attrs[HWSIM_ATTR_CHANNELS])
3314 param.channels = nla_get_u32(info->attrs[HWSIM_ATTR_CHANNELS]);
3315
3316 if (param.channels < 1) {
3317 GENL_SET_ERR_MSG(info, "must have at least one channel");
3318 return -EINVAL;
3319 }
3320
3321 if (param.channels > CFG80211_MAX_NUM_DIFFERENT_CHANNELS) {
3322 GENL_SET_ERR_MSG(info, "too many channels specified");
3323 return -EINVAL;
3324 }
3325
3326 if (info->attrs[HWSIM_ATTR_NO_VIF])
3327 param.no_vif = true;
3328
3329 if (info->attrs[HWSIM_ATTR_RADIO_NAME]) {
3330 hwname = kasprintf(GFP_KERNEL, "%.*s",
3331 nla_len(info->attrs[HWSIM_ATTR_RADIO_NAME]),
3332 (char *)nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]));
3333 if (!hwname)
3334 return -ENOMEM;
3335 param.hwname = hwname;
3336 }
3337
3338 if (info->attrs[HWSIM_ATTR_USE_CHANCTX])
3339 param.use_chanctx = true;
3340 else
3341 param.use_chanctx = (param.channels > 1);
3342
3343 if (info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2])
3344 param.reg_alpha2 =
3345 nla_data(info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2]);
3346
3347 if (info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]) {
3348 u32 idx = nla_get_u32(info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]);
3349
3350 if (idx >= ARRAY_SIZE(hwsim_world_regdom_custom)) {
3351 kfree(hwname);
3352 return -EINVAL;
3353 }
3354
3355 idx = array_index_nospec(idx,
3356 ARRAY_SIZE(hwsim_world_regdom_custom));
3357 param.regd = hwsim_world_regdom_custom[idx];
3358 }
3359
3360 if (info->attrs[HWSIM_ATTR_PERM_ADDR]) {
3361 if (!is_valid_ether_addr(
3362 nla_data(info->attrs[HWSIM_ATTR_PERM_ADDR]))) {
3363 GENL_SET_ERR_MSG(info,"MAC is no valid source addr");
3364 NL_SET_BAD_ATTR(info->extack,
3365 info->attrs[HWSIM_ATTR_PERM_ADDR]);
3366 kfree(hwname);
3367 return -EINVAL;
3368 }
3369
3370
3371 param.perm_addr = nla_data(info->attrs[HWSIM_ATTR_PERM_ADDR]);
3372 }
3373
3374 ret = mac80211_hwsim_new_radio(info, ¶m);
3375 kfree(hwname);
3376 return ret;
3377 }
3378
hwsim_del_radio_nl(struct sk_buff * msg,struct genl_info * info)3379 static int hwsim_del_radio_nl(struct sk_buff *msg, struct genl_info *info)
3380 {
3381 struct mac80211_hwsim_data *data;
3382 s64 idx = -1;
3383 const char *hwname = NULL;
3384
3385 if (info->attrs[HWSIM_ATTR_RADIO_ID]) {
3386 idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
3387 } else if (info->attrs[HWSIM_ATTR_RADIO_NAME]) {
3388 hwname = kasprintf(GFP_KERNEL, "%.*s",
3389 nla_len(info->attrs[HWSIM_ATTR_RADIO_NAME]),
3390 (char *)nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]));
3391 if (!hwname)
3392 return -ENOMEM;
3393 } else
3394 return -EINVAL;
3395
3396 spin_lock_bh(&hwsim_radio_lock);
3397 list_for_each_entry(data, &hwsim_radios, list) {
3398 if (idx >= 0) {
3399 if (data->idx != idx)
3400 continue;
3401 } else {
3402 if (!hwname ||
3403 strcmp(hwname, wiphy_name(data->hw->wiphy)))
3404 continue;
3405 }
3406
3407 if (!net_eq(wiphy_net(data->hw->wiphy), genl_info_net(info)))
3408 continue;
3409
3410 list_del(&data->list);
3411 rhashtable_remove_fast(&hwsim_radios_rht, &data->rht,
3412 hwsim_rht_params);
3413 hwsim_radios_generation++;
3414 spin_unlock_bh(&hwsim_radio_lock);
3415 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
3416 info);
3417 kfree(hwname);
3418 return 0;
3419 }
3420 spin_unlock_bh(&hwsim_radio_lock);
3421
3422 kfree(hwname);
3423 return -ENODEV;
3424 }
3425
hwsim_get_radio_nl(struct sk_buff * msg,struct genl_info * info)3426 static int hwsim_get_radio_nl(struct sk_buff *msg, struct genl_info *info)
3427 {
3428 struct mac80211_hwsim_data *data;
3429 struct sk_buff *skb;
3430 int idx, res = -ENODEV;
3431
3432 if (!info->attrs[HWSIM_ATTR_RADIO_ID])
3433 return -EINVAL;
3434 idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
3435
3436 spin_lock_bh(&hwsim_radio_lock);
3437 list_for_each_entry(data, &hwsim_radios, list) {
3438 if (data->idx != idx)
3439 continue;
3440
3441 if (!net_eq(wiphy_net(data->hw->wiphy), genl_info_net(info)))
3442 continue;
3443
3444 skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
3445 if (!skb) {
3446 res = -ENOMEM;
3447 goto out_err;
3448 }
3449
3450 res = mac80211_hwsim_get_radio(skb, data, info->snd_portid,
3451 info->snd_seq, NULL, 0);
3452 if (res < 0) {
3453 nlmsg_free(skb);
3454 goto out_err;
3455 }
3456
3457 genlmsg_reply(skb, info);
3458 break;
3459 }
3460
3461 out_err:
3462 spin_unlock_bh(&hwsim_radio_lock);
3463
3464 return res;
3465 }
3466
hwsim_dump_radio_nl(struct sk_buff * skb,struct netlink_callback * cb)3467 static int hwsim_dump_radio_nl(struct sk_buff *skb,
3468 struct netlink_callback *cb)
3469 {
3470 int last_idx = cb->args[0] - 1;
3471 struct mac80211_hwsim_data *data = NULL;
3472 int res = 0;
3473 void *hdr;
3474
3475 spin_lock_bh(&hwsim_radio_lock);
3476 cb->seq = hwsim_radios_generation;
3477
3478 if (last_idx >= hwsim_radio_idx-1)
3479 goto done;
3480
3481 list_for_each_entry(data, &hwsim_radios, list) {
3482 if (data->idx <= last_idx)
3483 continue;
3484
3485 if (!net_eq(wiphy_net(data->hw->wiphy), sock_net(skb->sk)))
3486 continue;
3487
3488 res = mac80211_hwsim_get_radio(skb, data,
3489 NETLINK_CB(cb->skb).portid,
3490 cb->nlh->nlmsg_seq, cb,
3491 NLM_F_MULTI);
3492 if (res < 0)
3493 break;
3494
3495 last_idx = data->idx;
3496 }
3497
3498 cb->args[0] = last_idx + 1;
3499
3500 /* list changed, but no new element sent, set interrupted flag */
3501 if (skb->len == 0 && cb->prev_seq && cb->seq != cb->prev_seq) {
3502 hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid,
3503 cb->nlh->nlmsg_seq, &hwsim_genl_family,
3504 NLM_F_MULTI, HWSIM_CMD_GET_RADIO);
3505 if (!hdr)
3506 res = -EMSGSIZE;
3507 genl_dump_check_consistent(cb, hdr);
3508 genlmsg_end(skb, hdr);
3509 }
3510
3511 done:
3512 spin_unlock_bh(&hwsim_radio_lock);
3513 return res ?: skb->len;
3514 }
3515
3516 /* Generic Netlink operations array */
3517 static const struct genl_ops hwsim_ops[] = {
3518 {
3519 .cmd = HWSIM_CMD_REGISTER,
3520 .policy = hwsim_genl_policy,
3521 .doit = hwsim_register_received_nl,
3522 .flags = GENL_UNS_ADMIN_PERM,
3523 },
3524 {
3525 .cmd = HWSIM_CMD_FRAME,
3526 .policy = hwsim_genl_policy,
3527 .doit = hwsim_cloned_frame_received_nl,
3528 },
3529 {
3530 .cmd = HWSIM_CMD_TX_INFO_FRAME,
3531 .policy = hwsim_genl_policy,
3532 .doit = hwsim_tx_info_frame_received_nl,
3533 },
3534 {
3535 .cmd = HWSIM_CMD_NEW_RADIO,
3536 .policy = hwsim_genl_policy,
3537 .doit = hwsim_new_radio_nl,
3538 .flags = GENL_UNS_ADMIN_PERM,
3539 },
3540 {
3541 .cmd = HWSIM_CMD_DEL_RADIO,
3542 .policy = hwsim_genl_policy,
3543 .doit = hwsim_del_radio_nl,
3544 .flags = GENL_UNS_ADMIN_PERM,
3545 },
3546 {
3547 .cmd = HWSIM_CMD_GET_RADIO,
3548 .policy = hwsim_genl_policy,
3549 .doit = hwsim_get_radio_nl,
3550 .dumpit = hwsim_dump_radio_nl,
3551 },
3552 };
3553
3554 static struct genl_family hwsim_genl_family __ro_after_init = {
3555 .name = "MAC80211_HWSIM",
3556 .version = 1,
3557 .maxattr = HWSIM_ATTR_MAX,
3558 .netnsok = true,
3559 .module = THIS_MODULE,
3560 .ops = hwsim_ops,
3561 .n_ops = ARRAY_SIZE(hwsim_ops),
3562 .mcgrps = hwsim_mcgrps,
3563 .n_mcgrps = ARRAY_SIZE(hwsim_mcgrps),
3564 };
3565
remove_user_radios(u32 portid)3566 static void remove_user_radios(u32 portid)
3567 {
3568 struct mac80211_hwsim_data *entry, *tmp;
3569 LIST_HEAD(list);
3570
3571 spin_lock_bh(&hwsim_radio_lock);
3572 list_for_each_entry_safe(entry, tmp, &hwsim_radios, list) {
3573 if (entry->destroy_on_close && entry->portid == portid) {
3574 list_move(&entry->list, &list);
3575 rhashtable_remove_fast(&hwsim_radios_rht, &entry->rht,
3576 hwsim_rht_params);
3577 hwsim_radios_generation++;
3578 }
3579 }
3580 spin_unlock_bh(&hwsim_radio_lock);
3581
3582 list_for_each_entry_safe(entry, tmp, &list, list) {
3583 list_del(&entry->list);
3584 mac80211_hwsim_del_radio(entry, wiphy_name(entry->hw->wiphy),
3585 NULL);
3586 }
3587 }
3588
mac80211_hwsim_netlink_notify(struct notifier_block * nb,unsigned long state,void * _notify)3589 static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
3590 unsigned long state,
3591 void *_notify)
3592 {
3593 struct netlink_notify *notify = _notify;
3594
3595 if (state != NETLINK_URELEASE)
3596 return NOTIFY_DONE;
3597
3598 remove_user_radios(notify->portid);
3599
3600 if (notify->portid == hwsim_net_get_wmediumd(notify->net)) {
3601 printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
3602 " socket, switching to perfect channel medium\n");
3603 hwsim_register_wmediumd(notify->net, 0);
3604 }
3605 return NOTIFY_DONE;
3606
3607 }
3608
3609 static struct notifier_block hwsim_netlink_notifier = {
3610 .notifier_call = mac80211_hwsim_netlink_notify,
3611 };
3612
hwsim_init_netlink(void)3613 static int __init hwsim_init_netlink(void)
3614 {
3615 int rc;
3616
3617 printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
3618
3619 rc = genl_register_family(&hwsim_genl_family);
3620 if (rc)
3621 goto failure;
3622
3623 rc = netlink_register_notifier(&hwsim_netlink_notifier);
3624 if (rc) {
3625 genl_unregister_family(&hwsim_genl_family);
3626 goto failure;
3627 }
3628
3629 return 0;
3630
3631 failure:
3632 pr_debug("mac80211_hwsim: error occurred in %s\n", __func__);
3633 return -EINVAL;
3634 }
3635
hwsim_init_net(struct net * net)3636 static __net_init int hwsim_init_net(struct net *net)
3637 {
3638 return hwsim_net_set_netgroup(net);
3639 }
3640
hwsim_exit_net(struct net * net)3641 static void __net_exit hwsim_exit_net(struct net *net)
3642 {
3643 struct mac80211_hwsim_data *data, *tmp;
3644 LIST_HEAD(list);
3645
3646 spin_lock_bh(&hwsim_radio_lock);
3647 list_for_each_entry_safe(data, tmp, &hwsim_radios, list) {
3648 if (!net_eq(wiphy_net(data->hw->wiphy), net))
3649 continue;
3650
3651 /* Radios created in init_net are returned to init_net. */
3652 if (data->netgroup == hwsim_net_get_netgroup(&init_net))
3653 continue;
3654
3655 list_move(&data->list, &list);
3656 rhashtable_remove_fast(&hwsim_radios_rht, &data->rht,
3657 hwsim_rht_params);
3658 hwsim_radios_generation++;
3659 }
3660 spin_unlock_bh(&hwsim_radio_lock);
3661
3662 list_for_each_entry_safe(data, tmp, &list, list) {
3663 list_del(&data->list);
3664 mac80211_hwsim_del_radio(data,
3665 wiphy_name(data->hw->wiphy),
3666 NULL);
3667 }
3668
3669 ida_simple_remove(&hwsim_netgroup_ida, hwsim_net_get_netgroup(net));
3670 }
3671
3672 static struct pernet_operations hwsim_net_ops = {
3673 .init = hwsim_init_net,
3674 .exit = hwsim_exit_net,
3675 .id = &hwsim_net_id,
3676 .size = sizeof(struct hwsim_net),
3677 };
3678
hwsim_exit_netlink(void)3679 static void hwsim_exit_netlink(void)
3680 {
3681 /* unregister the notifier */
3682 netlink_unregister_notifier(&hwsim_netlink_notifier);
3683 /* unregister the family */
3684 genl_unregister_family(&hwsim_genl_family);
3685 }
3686
init_mac80211_hwsim(void)3687 static int __init init_mac80211_hwsim(void)
3688 {
3689 int i, err;
3690
3691 if (radios < 0 || radios > 100)
3692 return -EINVAL;
3693
3694 if (channels < 1)
3695 return -EINVAL;
3696
3697 spin_lock_init(&hwsim_radio_lock);
3698
3699 hwsim_wq = alloc_workqueue("hwsim_wq", 0, 0);
3700 if (!hwsim_wq)
3701 return -ENOMEM;
3702
3703 err = rhashtable_init(&hwsim_radios_rht, &hwsim_rht_params);
3704 if (err)
3705 goto out_free_wq;
3706
3707 err = register_pernet_device(&hwsim_net_ops);
3708 if (err)
3709 goto out_free_rht;
3710
3711 err = platform_driver_register(&mac80211_hwsim_driver);
3712 if (err)
3713 goto out_unregister_pernet;
3714
3715 hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
3716 if (IS_ERR(hwsim_class)) {
3717 err = PTR_ERR(hwsim_class);
3718 goto out_unregister_driver;
3719 }
3720
3721 err = hwsim_init_netlink();
3722 if (err < 0)
3723 goto out_unregister_driver;
3724
3725 for (i = 0; i < radios; i++) {
3726 struct hwsim_new_radio_params param = { 0 };
3727
3728 param.channels = channels;
3729
3730 switch (regtest) {
3731 case HWSIM_REGTEST_DIFF_COUNTRY:
3732 if (i < ARRAY_SIZE(hwsim_alpha2s))
3733 param.reg_alpha2 = hwsim_alpha2s[i];
3734 break;
3735 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
3736 if (!i)
3737 param.reg_alpha2 = hwsim_alpha2s[0];
3738 break;
3739 case HWSIM_REGTEST_STRICT_ALL:
3740 param.reg_strict = true;
3741 case HWSIM_REGTEST_DRIVER_REG_ALL:
3742 param.reg_alpha2 = hwsim_alpha2s[0];
3743 break;
3744 case HWSIM_REGTEST_WORLD_ROAM:
3745 if (i == 0)
3746 param.regd = &hwsim_world_regdom_custom_01;
3747 break;
3748 case HWSIM_REGTEST_CUSTOM_WORLD:
3749 param.regd = &hwsim_world_regdom_custom_01;
3750 break;
3751 case HWSIM_REGTEST_CUSTOM_WORLD_2:
3752 if (i == 0)
3753 param.regd = &hwsim_world_regdom_custom_01;
3754 else if (i == 1)
3755 param.regd = &hwsim_world_regdom_custom_02;
3756 break;
3757 case HWSIM_REGTEST_STRICT_FOLLOW:
3758 if (i == 0) {
3759 param.reg_strict = true;
3760 param.reg_alpha2 = hwsim_alpha2s[0];
3761 }
3762 break;
3763 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
3764 if (i == 0) {
3765 param.reg_strict = true;
3766 param.reg_alpha2 = hwsim_alpha2s[0];
3767 } else if (i == 1) {
3768 param.reg_alpha2 = hwsim_alpha2s[1];
3769 }
3770 break;
3771 case HWSIM_REGTEST_ALL:
3772 switch (i) {
3773 case 0:
3774 param.regd = &hwsim_world_regdom_custom_01;
3775 break;
3776 case 1:
3777 param.regd = &hwsim_world_regdom_custom_02;
3778 break;
3779 case 2:
3780 param.reg_alpha2 = hwsim_alpha2s[0];
3781 break;
3782 case 3:
3783 param.reg_alpha2 = hwsim_alpha2s[1];
3784 break;
3785 case 4:
3786 param.reg_strict = true;
3787 param.reg_alpha2 = hwsim_alpha2s[2];
3788 break;
3789 }
3790 break;
3791 default:
3792 break;
3793 }
3794
3795 param.p2p_device = support_p2p_device;
3796 param.use_chanctx = channels > 1;
3797
3798 err = mac80211_hwsim_new_radio(NULL, ¶m);
3799 if (err < 0)
3800 goto out_free_radios;
3801 }
3802
3803 hwsim_mon = alloc_netdev(0, "hwsim%d", NET_NAME_UNKNOWN,
3804 hwsim_mon_setup);
3805 if (hwsim_mon == NULL) {
3806 err = -ENOMEM;
3807 goto out_free_radios;
3808 }
3809
3810 rtnl_lock();
3811 err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
3812 if (err < 0) {
3813 rtnl_unlock();
3814 goto out_free_radios;
3815 }
3816
3817 err = register_netdevice(hwsim_mon);
3818 if (err < 0) {
3819 rtnl_unlock();
3820 goto out_free_mon;
3821 }
3822 rtnl_unlock();
3823
3824 return 0;
3825
3826 out_free_mon:
3827 free_netdev(hwsim_mon);
3828 out_free_radios:
3829 mac80211_hwsim_free();
3830 out_unregister_driver:
3831 platform_driver_unregister(&mac80211_hwsim_driver);
3832 out_unregister_pernet:
3833 unregister_pernet_device(&hwsim_net_ops);
3834 out_free_rht:
3835 rhashtable_destroy(&hwsim_radios_rht);
3836 out_free_wq:
3837 destroy_workqueue(hwsim_wq);
3838 return err;
3839 }
3840 module_init(init_mac80211_hwsim);
3841
exit_mac80211_hwsim(void)3842 static void __exit exit_mac80211_hwsim(void)
3843 {
3844 pr_debug("mac80211_hwsim: unregister radios\n");
3845
3846 hwsim_exit_netlink();
3847
3848 mac80211_hwsim_free();
3849 flush_workqueue(hwsim_wq);
3850
3851 rhashtable_destroy(&hwsim_radios_rht);
3852 unregister_netdev(hwsim_mon);
3853 platform_driver_unregister(&mac80211_hwsim_driver);
3854 unregister_pernet_device(&hwsim_net_ops);
3855 destroy_workqueue(hwsim_wq);
3856 }
3857 module_exit(exit_mac80211_hwsim);
3858
