1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * mac80211_hwsim - software simulator of 802.11 radio(s) for mac80211
4 * Copyright (c) 2008, Jouni Malinen <j@w1.fi>
5 * Copyright (c) 2011, Javier Lopez <jlopex@gmail.com>
6 * Copyright (c) 2016 - 2017 Intel Deutschland GmbH
7 * Copyright (C) 2018 - 2022 Intel Corporation
8 */
9
10 /*
11 * TODO:
12 * - Add TSF sync and fix IBSS beacon transmission by adding
13 * competition for "air time" at TBTT
14 * - RX filtering based on filter configuration (data->rx_filter)
15 */
16
17 #include <linux/list.h>
18 #include <linux/slab.h>
19 #include <linux/spinlock.h>
20 #include <net/dst.h>
21 #include <net/xfrm.h>
22 #include <net/mac80211.h>
23 #include <net/ieee80211_radiotap.h>
24 #include <linux/if_arp.h>
25 #include <linux/rtnetlink.h>
26 #include <linux/etherdevice.h>
27 #include <linux/platform_device.h>
28 #include <linux/debugfs.h>
29 #include <linux/module.h>
30 #include <linux/ktime.h>
31 #include <net/genetlink.h>
32 #include <net/net_namespace.h>
33 #include <net/netns/generic.h>
34 #include <linux/rhashtable.h>
35 #include <linux/nospec.h>
36 #include <linux/virtio.h>
37 #include <linux/virtio_ids.h>
38 #include <linux/virtio_config.h>
39 #include "mac80211_hwsim.h"
40
41 #define WARN_QUEUE 100
42 #define MAX_QUEUE 200
43
44 MODULE_AUTHOR("Jouni Malinen");
45 MODULE_DESCRIPTION("Software simulator of 802.11 radio(s) for mac80211");
46 MODULE_LICENSE("GPL");
47
48 static int radios = 2;
49 module_param(radios, int, 0444);
50 MODULE_PARM_DESC(radios, "Number of simulated radios");
51
52 static int channels = 1;
53 module_param(channels, int, 0444);
54 MODULE_PARM_DESC(channels, "Number of concurrent channels");
55
56 static bool paged_rx = false;
57 module_param(paged_rx, bool, 0644);
58 MODULE_PARM_DESC(paged_rx, "Use paged SKBs for RX instead of linear ones");
59
60 static bool rctbl = false;
61 module_param(rctbl, bool, 0444);
62 MODULE_PARM_DESC(rctbl, "Handle rate control table");
63
64 static bool support_p2p_device = true;
65 module_param(support_p2p_device, bool, 0444);
66 MODULE_PARM_DESC(support_p2p_device, "Support P2P-Device interface type");
67
68 /**
69 * enum hwsim_regtest - the type of regulatory tests we offer
70 *
71 * These are the different values you can use for the regtest
72 * module parameter. This is useful to help test world roaming
73 * and the driver regulatory_hint() call and combinations of these.
74 * If you want to do specific alpha2 regulatory domain tests simply
75 * use the userspace regulatory request as that will be respected as
76 * well without the need of this module parameter. This is designed
77 * only for testing the driver regulatory request, world roaming
78 * and all possible combinations.
79 *
80 * @HWSIM_REGTEST_DISABLED: No regulatory tests are performed,
81 * this is the default value.
82 * @HWSIM_REGTEST_DRIVER_REG_FOLLOW: Used for testing the driver regulatory
83 * hint, only one driver regulatory hint will be sent as such the
84 * secondary radios are expected to follow.
85 * @HWSIM_REGTEST_DRIVER_REG_ALL: Used for testing the driver regulatory
86 * request with all radios reporting the same regulatory domain.
87 * @HWSIM_REGTEST_DIFF_COUNTRY: Used for testing the drivers calling
88 * different regulatory domains requests. Expected behaviour is for
89 * an intersection to occur but each device will still use their
90 * respective regulatory requested domains. Subsequent radios will
91 * use the resulting intersection.
92 * @HWSIM_REGTEST_WORLD_ROAM: Used for testing the world roaming. We accomplish
93 * this by using a custom beacon-capable regulatory domain for the first
94 * radio. All other device world roam.
95 * @HWSIM_REGTEST_CUSTOM_WORLD: Used for testing the custom world regulatory
96 * domain requests. All radios will adhere to this custom world regulatory
97 * domain.
98 * @HWSIM_REGTEST_CUSTOM_WORLD_2: Used for testing 2 custom world regulatory
99 * domain requests. The first radio will adhere to the first custom world
100 * regulatory domain, the second one to the second custom world regulatory
101 * domain. All other devices will world roam.
102 * @HWSIM_REGTEST_STRICT_FOLLOW: Used for testing strict regulatory domain
103 * settings, only the first radio will send a regulatory domain request
104 * and use strict settings. The rest of the radios are expected to follow.
105 * @HWSIM_REGTEST_STRICT_ALL: Used for testing strict regulatory domain
106 * settings. All radios will adhere to this.
107 * @HWSIM_REGTEST_STRICT_AND_DRIVER_REG: Used for testing strict regulatory
108 * domain settings, combined with secondary driver regulatory domain
109 * settings. The first radio will get a strict regulatory domain setting
110 * using the first driver regulatory request and the second radio will use
111 * non-strict settings using the second driver regulatory request. All
112 * other devices should follow the intersection created between the
113 * first two.
114 * @HWSIM_REGTEST_ALL: Used for testing every possible mix. You will need
115 * at least 6 radios for a complete test. We will test in this order:
116 * 1 - driver custom world regulatory domain
117 * 2 - second custom world regulatory domain
118 * 3 - first driver regulatory domain request
119 * 4 - second driver regulatory domain request
120 * 5 - strict regulatory domain settings using the third driver regulatory
121 * domain request
122 * 6 and on - should follow the intersection of the 3rd, 4rth and 5th radio
123 * regulatory requests.
124 */
125 enum hwsim_regtest {
126 HWSIM_REGTEST_DISABLED = 0,
127 HWSIM_REGTEST_DRIVER_REG_FOLLOW = 1,
128 HWSIM_REGTEST_DRIVER_REG_ALL = 2,
129 HWSIM_REGTEST_DIFF_COUNTRY = 3,
130 HWSIM_REGTEST_WORLD_ROAM = 4,
131 HWSIM_REGTEST_CUSTOM_WORLD = 5,
132 HWSIM_REGTEST_CUSTOM_WORLD_2 = 6,
133 HWSIM_REGTEST_STRICT_FOLLOW = 7,
134 HWSIM_REGTEST_STRICT_ALL = 8,
135 HWSIM_REGTEST_STRICT_AND_DRIVER_REG = 9,
136 HWSIM_REGTEST_ALL = 10,
137 };
138
139 /* Set to one of the HWSIM_REGTEST_* values above */
140 static int regtest = HWSIM_REGTEST_DISABLED;
141 module_param(regtest, int, 0444);
142 MODULE_PARM_DESC(regtest, "The type of regulatory test we want to run");
143
144 static const char *hwsim_alpha2s[] = {
145 "FI",
146 "AL",
147 "US",
148 "DE",
149 "JP",
150 "AL",
151 };
152
153 static const struct ieee80211_regdomain hwsim_world_regdom_custom_01 = {
154 .n_reg_rules = 5,
155 .alpha2 = "99",
156 .reg_rules = {
157 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
158 REG_RULE(2484-10, 2484+10, 40, 0, 20, 0),
159 REG_RULE(5150-10, 5240+10, 40, 0, 30, 0),
160 REG_RULE(5745-10, 5825+10, 40, 0, 30, 0),
161 REG_RULE(5855-10, 5925+10, 40, 0, 33, 0),
162 }
163 };
164
165 static const struct ieee80211_regdomain hwsim_world_regdom_custom_02 = {
166 .n_reg_rules = 3,
167 .alpha2 = "99",
168 .reg_rules = {
169 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
170 REG_RULE(5725-10, 5850+10, 40, 0, 30,
171 NL80211_RRF_NO_IR),
172 REG_RULE(5855-10, 5925+10, 40, 0, 33, 0),
173 }
174 };
175
176 static const struct ieee80211_regdomain hwsim_world_regdom_custom_03 = {
177 .n_reg_rules = 6,
178 .alpha2 = "99",
179 .reg_rules = {
180 REG_RULE(2412 - 10, 2462 + 10, 40, 0, 20, 0),
181 REG_RULE(2484 - 10, 2484 + 10, 40, 0, 20, 0),
182 REG_RULE(5150 - 10, 5240 + 10, 40, 0, 30, 0),
183 REG_RULE(5745 - 10, 5825 + 10, 40, 0, 30, 0),
184 REG_RULE(5855 - 10, 5925 + 10, 40, 0, 33, 0),
185 REG_RULE(5955 - 10, 7125 + 10, 320, 0, 33, 0),
186 }
187 };
188
189 static const struct ieee80211_regdomain *hwsim_world_regdom_custom[] = {
190 &hwsim_world_regdom_custom_01,
191 &hwsim_world_regdom_custom_02,
192 &hwsim_world_regdom_custom_03,
193 };
194
195 struct hwsim_vif_priv {
196 u32 magic;
197 u8 bssid[ETH_ALEN];
198 bool assoc;
199 bool bcn_en;
200 u16 aid;
201 };
202
203 #define HWSIM_VIF_MAGIC 0x69537748
204
hwsim_check_magic(struct ieee80211_vif * vif)205 static inline void hwsim_check_magic(struct ieee80211_vif *vif)
206 {
207 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
208 WARN(vp->magic != HWSIM_VIF_MAGIC,
209 "Invalid VIF (%p) magic %#x, %pM, %d/%d\n",
210 vif, vp->magic, vif->addr, vif->type, vif->p2p);
211 }
212
hwsim_set_magic(struct ieee80211_vif * vif)213 static inline void hwsim_set_magic(struct ieee80211_vif *vif)
214 {
215 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
216 vp->magic = HWSIM_VIF_MAGIC;
217 }
218
hwsim_clear_magic(struct ieee80211_vif * vif)219 static inline void hwsim_clear_magic(struct ieee80211_vif *vif)
220 {
221 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
222 vp->magic = 0;
223 }
224
225 struct hwsim_sta_priv {
226 u32 magic;
227 };
228
229 #define HWSIM_STA_MAGIC 0x6d537749
230
hwsim_check_sta_magic(struct ieee80211_sta * sta)231 static inline void hwsim_check_sta_magic(struct ieee80211_sta *sta)
232 {
233 struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
234 WARN_ON(sp->magic != HWSIM_STA_MAGIC);
235 }
236
hwsim_set_sta_magic(struct ieee80211_sta * sta)237 static inline void hwsim_set_sta_magic(struct ieee80211_sta *sta)
238 {
239 struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
240 sp->magic = HWSIM_STA_MAGIC;
241 }
242
hwsim_clear_sta_magic(struct ieee80211_sta * sta)243 static inline void hwsim_clear_sta_magic(struct ieee80211_sta *sta)
244 {
245 struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
246 sp->magic = 0;
247 }
248
249 struct hwsim_chanctx_priv {
250 u32 magic;
251 };
252
253 #define HWSIM_CHANCTX_MAGIC 0x6d53774a
254
hwsim_check_chanctx_magic(struct ieee80211_chanctx_conf * c)255 static inline void hwsim_check_chanctx_magic(struct ieee80211_chanctx_conf *c)
256 {
257 struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
258 WARN_ON(cp->magic != HWSIM_CHANCTX_MAGIC);
259 }
260
hwsim_set_chanctx_magic(struct ieee80211_chanctx_conf * c)261 static inline void hwsim_set_chanctx_magic(struct ieee80211_chanctx_conf *c)
262 {
263 struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
264 cp->magic = HWSIM_CHANCTX_MAGIC;
265 }
266
hwsim_clear_chanctx_magic(struct ieee80211_chanctx_conf * c)267 static inline void hwsim_clear_chanctx_magic(struct ieee80211_chanctx_conf *c)
268 {
269 struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
270 cp->magic = 0;
271 }
272
273 static unsigned int hwsim_net_id;
274
275 static DEFINE_IDA(hwsim_netgroup_ida);
276
277 struct hwsim_net {
278 int netgroup;
279 u32 wmediumd;
280 };
281
hwsim_net_get_netgroup(struct net * net)282 static inline int hwsim_net_get_netgroup(struct net *net)
283 {
284 struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
285
286 return hwsim_net->netgroup;
287 }
288
hwsim_net_set_netgroup(struct net * net)289 static inline int hwsim_net_set_netgroup(struct net *net)
290 {
291 struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
292
293 hwsim_net->netgroup = ida_simple_get(&hwsim_netgroup_ida,
294 0, 0, GFP_KERNEL);
295 return hwsim_net->netgroup >= 0 ? 0 : -ENOMEM;
296 }
297
hwsim_net_get_wmediumd(struct net * net)298 static inline u32 hwsim_net_get_wmediumd(struct net *net)
299 {
300 struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
301
302 return hwsim_net->wmediumd;
303 }
304
hwsim_net_set_wmediumd(struct net * net,u32 portid)305 static inline void hwsim_net_set_wmediumd(struct net *net, u32 portid)
306 {
307 struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
308
309 hwsim_net->wmediumd = portid;
310 }
311
312 static struct class *hwsim_class;
313
314 static struct net_device *hwsim_mon; /* global monitor netdev */
315
316 #define CHAN2G(_freq) { \
317 .band = NL80211_BAND_2GHZ, \
318 .center_freq = (_freq), \
319 .hw_value = (_freq), \
320 }
321
322 #define CHAN5G(_freq) { \
323 .band = NL80211_BAND_5GHZ, \
324 .center_freq = (_freq), \
325 .hw_value = (_freq), \
326 }
327
328 #define CHAN6G(_freq) { \
329 .band = NL80211_BAND_6GHZ, \
330 .center_freq = (_freq), \
331 .hw_value = (_freq), \
332 }
333
334 static const struct ieee80211_channel hwsim_channels_2ghz[] = {
335 CHAN2G(2412), /* Channel 1 */
336 CHAN2G(2417), /* Channel 2 */
337 CHAN2G(2422), /* Channel 3 */
338 CHAN2G(2427), /* Channel 4 */
339 CHAN2G(2432), /* Channel 5 */
340 CHAN2G(2437), /* Channel 6 */
341 CHAN2G(2442), /* Channel 7 */
342 CHAN2G(2447), /* Channel 8 */
343 CHAN2G(2452), /* Channel 9 */
344 CHAN2G(2457), /* Channel 10 */
345 CHAN2G(2462), /* Channel 11 */
346 CHAN2G(2467), /* Channel 12 */
347 CHAN2G(2472), /* Channel 13 */
348 CHAN2G(2484), /* Channel 14 */
349 };
350
351 static const struct ieee80211_channel hwsim_channels_5ghz[] = {
352 CHAN5G(5180), /* Channel 36 */
353 CHAN5G(5200), /* Channel 40 */
354 CHAN5G(5220), /* Channel 44 */
355 CHAN5G(5240), /* Channel 48 */
356
357 CHAN5G(5260), /* Channel 52 */
358 CHAN5G(5280), /* Channel 56 */
359 CHAN5G(5300), /* Channel 60 */
360 CHAN5G(5320), /* Channel 64 */
361
362 CHAN5G(5500), /* Channel 100 */
363 CHAN5G(5520), /* Channel 104 */
364 CHAN5G(5540), /* Channel 108 */
365 CHAN5G(5560), /* Channel 112 */
366 CHAN5G(5580), /* Channel 116 */
367 CHAN5G(5600), /* Channel 120 */
368 CHAN5G(5620), /* Channel 124 */
369 CHAN5G(5640), /* Channel 128 */
370 CHAN5G(5660), /* Channel 132 */
371 CHAN5G(5680), /* Channel 136 */
372 CHAN5G(5700), /* Channel 140 */
373
374 CHAN5G(5745), /* Channel 149 */
375 CHAN5G(5765), /* Channel 153 */
376 CHAN5G(5785), /* Channel 157 */
377 CHAN5G(5805), /* Channel 161 */
378 CHAN5G(5825), /* Channel 165 */
379 CHAN5G(5845), /* Channel 169 */
380
381 CHAN5G(5855), /* Channel 171 */
382 CHAN5G(5860), /* Channel 172 */
383 CHAN5G(5865), /* Channel 173 */
384 CHAN5G(5870), /* Channel 174 */
385
386 CHAN5G(5875), /* Channel 175 */
387 CHAN5G(5880), /* Channel 176 */
388 CHAN5G(5885), /* Channel 177 */
389 CHAN5G(5890), /* Channel 178 */
390 CHAN5G(5895), /* Channel 179 */
391 CHAN5G(5900), /* Channel 180 */
392 CHAN5G(5905), /* Channel 181 */
393
394 CHAN5G(5910), /* Channel 182 */
395 CHAN5G(5915), /* Channel 183 */
396 CHAN5G(5920), /* Channel 184 */
397 CHAN5G(5925), /* Channel 185 */
398 };
399
400 static const struct ieee80211_channel hwsim_channels_6ghz[] = {
401 CHAN6G(5955), /* Channel 1 */
402 CHAN6G(5975), /* Channel 5 */
403 CHAN6G(5995), /* Channel 9 */
404 CHAN6G(6015), /* Channel 13 */
405 CHAN6G(6035), /* Channel 17 */
406 CHAN6G(6055), /* Channel 21 */
407 CHAN6G(6075), /* Channel 25 */
408 CHAN6G(6095), /* Channel 29 */
409 CHAN6G(6115), /* Channel 33 */
410 CHAN6G(6135), /* Channel 37 */
411 CHAN6G(6155), /* Channel 41 */
412 CHAN6G(6175), /* Channel 45 */
413 CHAN6G(6195), /* Channel 49 */
414 CHAN6G(6215), /* Channel 53 */
415 CHAN6G(6235), /* Channel 57 */
416 CHAN6G(6255), /* Channel 61 */
417 CHAN6G(6275), /* Channel 65 */
418 CHAN6G(6295), /* Channel 69 */
419 CHAN6G(6315), /* Channel 73 */
420 CHAN6G(6335), /* Channel 77 */
421 CHAN6G(6355), /* Channel 81 */
422 CHAN6G(6375), /* Channel 85 */
423 CHAN6G(6395), /* Channel 89 */
424 CHAN6G(6415), /* Channel 93 */
425 CHAN6G(6435), /* Channel 97 */
426 CHAN6G(6455), /* Channel 181 */
427 CHAN6G(6475), /* Channel 105 */
428 CHAN6G(6495), /* Channel 109 */
429 CHAN6G(6515), /* Channel 113 */
430 CHAN6G(6535), /* Channel 117 */
431 CHAN6G(6555), /* Channel 121 */
432 CHAN6G(6575), /* Channel 125 */
433 CHAN6G(6595), /* Channel 129 */
434 CHAN6G(6615), /* Channel 133 */
435 CHAN6G(6635), /* Channel 137 */
436 CHAN6G(6655), /* Channel 141 */
437 CHAN6G(6675), /* Channel 145 */
438 CHAN6G(6695), /* Channel 149 */
439 CHAN6G(6715), /* Channel 153 */
440 CHAN6G(6735), /* Channel 157 */
441 CHAN6G(6755), /* Channel 161 */
442 CHAN6G(6775), /* Channel 165 */
443 CHAN6G(6795), /* Channel 169 */
444 CHAN6G(6815), /* Channel 173 */
445 CHAN6G(6835), /* Channel 177 */
446 CHAN6G(6855), /* Channel 181 */
447 CHAN6G(6875), /* Channel 185 */
448 CHAN6G(6895), /* Channel 189 */
449 CHAN6G(6915), /* Channel 193 */
450 CHAN6G(6935), /* Channel 197 */
451 CHAN6G(6955), /* Channel 201 */
452 CHAN6G(6975), /* Channel 205 */
453 CHAN6G(6995), /* Channel 209 */
454 CHAN6G(7015), /* Channel 213 */
455 CHAN6G(7035), /* Channel 217 */
456 CHAN6G(7055), /* Channel 221 */
457 CHAN6G(7075), /* Channel 225 */
458 CHAN6G(7095), /* Channel 229 */
459 CHAN6G(7115), /* Channel 233 */
460 };
461
462 #define NUM_S1G_CHANS_US 51
463 static struct ieee80211_channel hwsim_channels_s1g[NUM_S1G_CHANS_US];
464
465 static const struct ieee80211_sta_s1g_cap hwsim_s1g_cap = {
466 .s1g = true,
467 .cap = { S1G_CAP0_SGI_1MHZ | S1G_CAP0_SGI_2MHZ,
468 0,
469 0,
470 S1G_CAP3_MAX_MPDU_LEN,
471 0,
472 S1G_CAP5_AMPDU,
473 0,
474 S1G_CAP7_DUP_1MHZ,
475 S1G_CAP8_TWT_RESPOND | S1G_CAP8_TWT_REQUEST,
476 0},
477 .nss_mcs = { 0xfc | 1, /* MCS 7 for 1 SS */
478 /* RX Highest Supported Long GI Data Rate 0:7 */
479 0,
480 /* RX Highest Supported Long GI Data Rate 0:7 */
481 /* TX S1G MCS Map 0:6 */
482 0xfa,
483 /* TX S1G MCS Map :7 */
484 /* TX Highest Supported Long GI Data Rate 0:6 */
485 0x80,
486 /* TX Highest Supported Long GI Data Rate 7:8 */
487 /* Rx Single spatial stream and S1G-MCS Map for 1MHz */
488 /* Tx Single spatial stream and S1G-MCS Map for 1MHz */
489 0 },
490 };
491
hwsim_init_s1g_channels(struct ieee80211_channel * chans)492 static void hwsim_init_s1g_channels(struct ieee80211_channel *chans)
493 {
494 int ch, freq;
495
496 for (ch = 0; ch < NUM_S1G_CHANS_US; ch++) {
497 freq = 902000 + (ch + 1) * 500;
498 chans[ch].band = NL80211_BAND_S1GHZ;
499 chans[ch].center_freq = KHZ_TO_MHZ(freq);
500 chans[ch].freq_offset = freq % 1000;
501 chans[ch].hw_value = ch + 1;
502 }
503 }
504
505 static const struct ieee80211_rate hwsim_rates[] = {
506 { .bitrate = 10 },
507 { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
508 { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
509 { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
510 { .bitrate = 60 },
511 { .bitrate = 90 },
512 { .bitrate = 120 },
513 { .bitrate = 180 },
514 { .bitrate = 240 },
515 { .bitrate = 360 },
516 { .bitrate = 480 },
517 { .bitrate = 540 }
518 };
519
520 #define DEFAULT_RX_RSSI -50
521
522 static const u32 hwsim_ciphers[] = {
523 WLAN_CIPHER_SUITE_WEP40,
524 WLAN_CIPHER_SUITE_WEP104,
525 WLAN_CIPHER_SUITE_TKIP,
526 WLAN_CIPHER_SUITE_CCMP,
527 WLAN_CIPHER_SUITE_CCMP_256,
528 WLAN_CIPHER_SUITE_GCMP,
529 WLAN_CIPHER_SUITE_GCMP_256,
530 WLAN_CIPHER_SUITE_AES_CMAC,
531 WLAN_CIPHER_SUITE_BIP_CMAC_256,
532 WLAN_CIPHER_SUITE_BIP_GMAC_128,
533 WLAN_CIPHER_SUITE_BIP_GMAC_256,
534 };
535
536 #define OUI_QCA 0x001374
537 #define QCA_NL80211_SUBCMD_TEST 1
538 enum qca_nl80211_vendor_subcmds {
539 QCA_WLAN_VENDOR_ATTR_TEST = 8,
540 QCA_WLAN_VENDOR_ATTR_MAX = QCA_WLAN_VENDOR_ATTR_TEST
541 };
542
543 static const struct nla_policy
544 hwsim_vendor_test_policy[QCA_WLAN_VENDOR_ATTR_MAX + 1] = {
545 [QCA_WLAN_VENDOR_ATTR_MAX] = { .type = NLA_U32 },
546 };
547
mac80211_hwsim_vendor_cmd_test(struct wiphy * wiphy,struct wireless_dev * wdev,const void * data,int data_len)548 static int mac80211_hwsim_vendor_cmd_test(struct wiphy *wiphy,
549 struct wireless_dev *wdev,
550 const void *data, int data_len)
551 {
552 struct sk_buff *skb;
553 struct nlattr *tb[QCA_WLAN_VENDOR_ATTR_MAX + 1];
554 int err;
555 u32 val;
556
557 err = nla_parse_deprecated(tb, QCA_WLAN_VENDOR_ATTR_MAX, data,
558 data_len, hwsim_vendor_test_policy, NULL);
559 if (err)
560 return err;
561 if (!tb[QCA_WLAN_VENDOR_ATTR_TEST])
562 return -EINVAL;
563 val = nla_get_u32(tb[QCA_WLAN_VENDOR_ATTR_TEST]);
564 wiphy_dbg(wiphy, "%s: test=%u\n", __func__, val);
565
566 /* Send a vendor event as a test. Note that this would not normally be
567 * done within a command handler, but rather, based on some other
568 * trigger. For simplicity, this command is used to trigger the event
569 * here.
570 *
571 * event_idx = 0 (index in mac80211_hwsim_vendor_commands)
572 */
573 skb = cfg80211_vendor_event_alloc(wiphy, wdev, 100, 0, GFP_KERNEL);
574 if (skb) {
575 /* skb_put() or nla_put() will fill up data within
576 * NL80211_ATTR_VENDOR_DATA.
577 */
578
579 /* Add vendor data */
580 nla_put_u32(skb, QCA_WLAN_VENDOR_ATTR_TEST, val + 1);
581
582 /* Send the event - this will call nla_nest_end() */
583 cfg80211_vendor_event(skb, GFP_KERNEL);
584 }
585
586 /* Send a response to the command */
587 skb = cfg80211_vendor_cmd_alloc_reply_skb(wiphy, 10);
588 if (!skb)
589 return -ENOMEM;
590
591 /* skb_put() or nla_put() will fill up data within
592 * NL80211_ATTR_VENDOR_DATA
593 */
594 nla_put_u32(skb, QCA_WLAN_VENDOR_ATTR_TEST, val + 2);
595
596 return cfg80211_vendor_cmd_reply(skb);
597 }
598
599 static struct wiphy_vendor_command mac80211_hwsim_vendor_commands[] = {
600 {
601 .info = { .vendor_id = OUI_QCA,
602 .subcmd = QCA_NL80211_SUBCMD_TEST },
603 .flags = WIPHY_VENDOR_CMD_NEED_NETDEV,
604 .doit = mac80211_hwsim_vendor_cmd_test,
605 .policy = hwsim_vendor_test_policy,
606 .maxattr = QCA_WLAN_VENDOR_ATTR_MAX,
607 }
608 };
609
610 /* Advertise support vendor specific events */
611 static const struct nl80211_vendor_cmd_info mac80211_hwsim_vendor_events[] = {
612 { .vendor_id = OUI_QCA, .subcmd = 1 },
613 };
614
615 static DEFINE_SPINLOCK(hwsim_radio_lock);
616 static LIST_HEAD(hwsim_radios);
617 static struct rhashtable hwsim_radios_rht;
618 static int hwsim_radio_idx;
619 static int hwsim_radios_generation = 1;
620
621 static struct platform_driver mac80211_hwsim_driver = {
622 .driver = {
623 .name = "mac80211_hwsim",
624 },
625 };
626
627 struct mac80211_hwsim_data {
628 struct list_head list;
629 struct rhash_head rht;
630 struct ieee80211_hw *hw;
631 struct device *dev;
632 struct ieee80211_supported_band bands[NUM_NL80211_BANDS];
633 struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)];
634 struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)];
635 struct ieee80211_channel channels_6ghz[ARRAY_SIZE(hwsim_channels_6ghz)];
636 struct ieee80211_channel channels_s1g[ARRAY_SIZE(hwsim_channels_s1g)];
637 struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
638 struct ieee80211_iface_combination if_combination;
639 struct ieee80211_iface_limit if_limits[3];
640 int n_if_limits;
641
642 u32 ciphers[ARRAY_SIZE(hwsim_ciphers)];
643
644 struct mac_address addresses[2];
645 struct ieee80211_chanctx_conf *chanctx;
646 int channels, idx;
647 bool use_chanctx;
648 bool destroy_on_close;
649 u32 portid;
650 char alpha2[2];
651 const struct ieee80211_regdomain *regd;
652
653 struct ieee80211_channel *tmp_chan;
654 struct ieee80211_channel *roc_chan;
655 u32 roc_duration;
656 struct delayed_work roc_start;
657 struct delayed_work roc_done;
658 struct delayed_work hw_scan;
659 struct cfg80211_scan_request *hw_scan_request;
660 struct ieee80211_vif *hw_scan_vif;
661 int scan_chan_idx;
662 u8 scan_addr[ETH_ALEN];
663 struct {
664 struct ieee80211_channel *channel;
665 unsigned long next_start, start, end;
666 } survey_data[ARRAY_SIZE(hwsim_channels_2ghz) +
667 ARRAY_SIZE(hwsim_channels_5ghz) +
668 ARRAY_SIZE(hwsim_channels_6ghz)];
669
670 struct ieee80211_channel *channel;
671 enum nl80211_chan_width bw;
672 u64 beacon_int /* beacon interval in us */;
673 unsigned int rx_filter;
674 bool started, idle, scanning;
675 struct mutex mutex;
676 struct hrtimer beacon_timer;
677 enum ps_mode {
678 PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
679 } ps;
680 bool ps_poll_pending;
681 struct dentry *debugfs;
682
683 atomic_t pending_cookie;
684 struct sk_buff_head pending; /* packets pending */
685 /*
686 * Only radios in the same group can communicate together (the
687 * channel has to match too). Each bit represents a group. A
688 * radio can be in more than one group.
689 */
690 u64 group;
691
692 /* group shared by radios created in the same netns */
693 int netgroup;
694 /* wmediumd portid responsible for netgroup of this radio */
695 u32 wmediumd;
696
697 /* difference between this hw's clock and the real clock, in usecs */
698 s64 tsf_offset;
699 s64 bcn_delta;
700 /* absolute beacon transmission time. Used to cover up "tx" delay. */
701 u64 abs_bcn_ts;
702
703 /* Stats */
704 u64 tx_pkts;
705 u64 rx_pkts;
706 u64 tx_bytes;
707 u64 rx_bytes;
708 u64 tx_dropped;
709 u64 tx_failed;
710
711 /* RSSI in rx status of the receiver */
712 int rx_rssi;
713 };
714
715 static const struct rhashtable_params hwsim_rht_params = {
716 .nelem_hint = 2,
717 .automatic_shrinking = true,
718 .key_len = ETH_ALEN,
719 .key_offset = offsetof(struct mac80211_hwsim_data, addresses[1]),
720 .head_offset = offsetof(struct mac80211_hwsim_data, rht),
721 };
722
723 struct hwsim_radiotap_hdr {
724 struct ieee80211_radiotap_header hdr;
725 __le64 rt_tsft;
726 u8 rt_flags;
727 u8 rt_rate;
728 __le16 rt_channel;
729 __le16 rt_chbitmask;
730 } __packed;
731
732 struct hwsim_radiotap_ack_hdr {
733 struct ieee80211_radiotap_header hdr;
734 u8 rt_flags;
735 u8 pad;
736 __le16 rt_channel;
737 __le16 rt_chbitmask;
738 } __packed;
739
740 /* MAC80211_HWSIM netlink family */
741 static struct genl_family hwsim_genl_family;
742
743 enum hwsim_multicast_groups {
744 HWSIM_MCGRP_CONFIG,
745 };
746
747 static const struct genl_multicast_group hwsim_mcgrps[] = {
748 [HWSIM_MCGRP_CONFIG] = { .name = "config", },
749 };
750
751 /* MAC80211_HWSIM netlink policy */
752
753 static const struct nla_policy hwsim_genl_policy[HWSIM_ATTR_MAX + 1] = {
754 [HWSIM_ATTR_ADDR_RECEIVER] = NLA_POLICY_ETH_ADDR_COMPAT,
755 [HWSIM_ATTR_ADDR_TRANSMITTER] = NLA_POLICY_ETH_ADDR_COMPAT,
756 [HWSIM_ATTR_FRAME] = { .type = NLA_BINARY,
757 .len = IEEE80211_MAX_DATA_LEN },
758 [HWSIM_ATTR_FLAGS] = { .type = NLA_U32 },
759 [HWSIM_ATTR_RX_RATE] = { .type = NLA_U32 },
760 [HWSIM_ATTR_SIGNAL] = { .type = NLA_U32 },
761 [HWSIM_ATTR_TX_INFO] = { .type = NLA_BINARY,
762 .len = IEEE80211_TX_MAX_RATES *
763 sizeof(struct hwsim_tx_rate)},
764 [HWSIM_ATTR_COOKIE] = { .type = NLA_U64 },
765 [HWSIM_ATTR_CHANNELS] = { .type = NLA_U32 },
766 [HWSIM_ATTR_RADIO_ID] = { .type = NLA_U32 },
767 [HWSIM_ATTR_REG_HINT_ALPHA2] = { .type = NLA_STRING, .len = 2 },
768 [HWSIM_ATTR_REG_CUSTOM_REG] = { .type = NLA_U32 },
769 [HWSIM_ATTR_REG_STRICT_REG] = { .type = NLA_FLAG },
770 [HWSIM_ATTR_SUPPORT_P2P_DEVICE] = { .type = NLA_FLAG },
771 [HWSIM_ATTR_USE_CHANCTX] = { .type = NLA_FLAG },
772 [HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE] = { .type = NLA_FLAG },
773 [HWSIM_ATTR_RADIO_NAME] = { .type = NLA_STRING },
774 [HWSIM_ATTR_NO_VIF] = { .type = NLA_FLAG },
775 [HWSIM_ATTR_FREQ] = { .type = NLA_U32 },
776 [HWSIM_ATTR_TX_INFO_FLAGS] = { .type = NLA_BINARY },
777 [HWSIM_ATTR_PERM_ADDR] = NLA_POLICY_ETH_ADDR_COMPAT,
778 [HWSIM_ATTR_IFTYPE_SUPPORT] = { .type = NLA_U32 },
779 [HWSIM_ATTR_CIPHER_SUPPORT] = { .type = NLA_BINARY },
780 };
781
782 #if IS_REACHABLE(CONFIG_VIRTIO)
783
784 /* MAC80211_HWSIM virtio queues */
785 static struct virtqueue *hwsim_vqs[HWSIM_NUM_VQS];
786 static bool hwsim_virtio_enabled;
787 static DEFINE_SPINLOCK(hwsim_virtio_lock);
788
789 static void hwsim_virtio_rx_work(struct work_struct *work);
790 static DECLARE_WORK(hwsim_virtio_rx, hwsim_virtio_rx_work);
791
hwsim_tx_virtio(struct mac80211_hwsim_data * data,struct sk_buff * skb)792 static int hwsim_tx_virtio(struct mac80211_hwsim_data *data,
793 struct sk_buff *skb)
794 {
795 struct scatterlist sg[1];
796 unsigned long flags;
797 int err;
798
799 spin_lock_irqsave(&hwsim_virtio_lock, flags);
800 if (!hwsim_virtio_enabled) {
801 err = -ENODEV;
802 goto out_free;
803 }
804
805 sg_init_one(sg, skb->head, skb_end_offset(skb));
806 err = virtqueue_add_outbuf(hwsim_vqs[HWSIM_VQ_TX], sg, 1, skb,
807 GFP_ATOMIC);
808 if (err)
809 goto out_free;
810 virtqueue_kick(hwsim_vqs[HWSIM_VQ_TX]);
811 spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
812 return 0;
813
814 out_free:
815 spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
816 nlmsg_free(skb);
817 return err;
818 }
819 #else
820 /* cause a linker error if this ends up being needed */
821 extern int hwsim_tx_virtio(struct mac80211_hwsim_data *data,
822 struct sk_buff *skb);
823 #define hwsim_virtio_enabled false
824 #endif
825
hwsim_get_chanwidth(enum nl80211_chan_width bw)826 static int hwsim_get_chanwidth(enum nl80211_chan_width bw)
827 {
828 switch (bw) {
829 case NL80211_CHAN_WIDTH_20_NOHT:
830 case NL80211_CHAN_WIDTH_20:
831 return 20;
832 case NL80211_CHAN_WIDTH_40:
833 return 40;
834 case NL80211_CHAN_WIDTH_80:
835 return 80;
836 case NL80211_CHAN_WIDTH_80P80:
837 case NL80211_CHAN_WIDTH_160:
838 return 160;
839 case NL80211_CHAN_WIDTH_320:
840 return 320;
841 case NL80211_CHAN_WIDTH_5:
842 return 5;
843 case NL80211_CHAN_WIDTH_10:
844 return 10;
845 case NL80211_CHAN_WIDTH_1:
846 return 1;
847 case NL80211_CHAN_WIDTH_2:
848 return 2;
849 case NL80211_CHAN_WIDTH_4:
850 return 4;
851 case NL80211_CHAN_WIDTH_8:
852 return 8;
853 case NL80211_CHAN_WIDTH_16:
854 return 16;
855 }
856
857 return INT_MAX;
858 }
859
860 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
861 struct sk_buff *skb,
862 struct ieee80211_channel *chan);
863
864 /* sysfs attributes */
hwsim_send_ps_poll(void * dat,u8 * mac,struct ieee80211_vif * vif)865 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
866 {
867 struct mac80211_hwsim_data *data = dat;
868 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
869 struct sk_buff *skb;
870 struct ieee80211_pspoll *pspoll;
871
872 if (!vp->assoc)
873 return;
874
875 wiphy_dbg(data->hw->wiphy,
876 "%s: send PS-Poll to %pM for aid %d\n",
877 __func__, vp->bssid, vp->aid);
878
879 skb = dev_alloc_skb(sizeof(*pspoll));
880 if (!skb)
881 return;
882 pspoll = skb_put(skb, sizeof(*pspoll));
883 pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
884 IEEE80211_STYPE_PSPOLL |
885 IEEE80211_FCTL_PM);
886 pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
887 memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
888 memcpy(pspoll->ta, mac, ETH_ALEN);
889
890 rcu_read_lock();
891 mac80211_hwsim_tx_frame(data->hw, skb,
892 rcu_dereference(vif->bss_conf.chanctx_conf)->def.chan);
893 rcu_read_unlock();
894 }
895
hwsim_send_nullfunc(struct mac80211_hwsim_data * data,u8 * mac,struct ieee80211_vif * vif,int ps)896 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
897 struct ieee80211_vif *vif, int ps)
898 {
899 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
900 struct sk_buff *skb;
901 struct ieee80211_hdr *hdr;
902
903 if (!vp->assoc)
904 return;
905
906 wiphy_dbg(data->hw->wiphy,
907 "%s: send data::nullfunc to %pM ps=%d\n",
908 __func__, vp->bssid, ps);
909
910 skb = dev_alloc_skb(sizeof(*hdr));
911 if (!skb)
912 return;
913 hdr = skb_put(skb, sizeof(*hdr) - ETH_ALEN);
914 hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
915 IEEE80211_STYPE_NULLFUNC |
916 IEEE80211_FCTL_TODS |
917 (ps ? IEEE80211_FCTL_PM : 0));
918 hdr->duration_id = cpu_to_le16(0);
919 memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
920 memcpy(hdr->addr2, mac, ETH_ALEN);
921 memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
922
923 rcu_read_lock();
924 mac80211_hwsim_tx_frame(data->hw, skb,
925 rcu_dereference(vif->bss_conf.chanctx_conf)->def.chan);
926 rcu_read_unlock();
927 }
928
929
hwsim_send_nullfunc_ps(void * dat,u8 * mac,struct ieee80211_vif * vif)930 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
931 struct ieee80211_vif *vif)
932 {
933 struct mac80211_hwsim_data *data = dat;
934 hwsim_send_nullfunc(data, mac, vif, 1);
935 }
936
hwsim_send_nullfunc_no_ps(void * dat,u8 * mac,struct ieee80211_vif * vif)937 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
938 struct ieee80211_vif *vif)
939 {
940 struct mac80211_hwsim_data *data = dat;
941 hwsim_send_nullfunc(data, mac, vif, 0);
942 }
943
hwsim_fops_ps_read(void * dat,u64 * val)944 static int hwsim_fops_ps_read(void *dat, u64 *val)
945 {
946 struct mac80211_hwsim_data *data = dat;
947 *val = data->ps;
948 return 0;
949 }
950
hwsim_fops_ps_write(void * dat,u64 val)951 static int hwsim_fops_ps_write(void *dat, u64 val)
952 {
953 struct mac80211_hwsim_data *data = dat;
954 enum ps_mode old_ps;
955
956 if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
957 val != PS_MANUAL_POLL)
958 return -EINVAL;
959
960 if (val == PS_MANUAL_POLL) {
961 if (data->ps != PS_ENABLED)
962 return -EINVAL;
963 local_bh_disable();
964 ieee80211_iterate_active_interfaces_atomic(
965 data->hw, IEEE80211_IFACE_ITER_NORMAL,
966 hwsim_send_ps_poll, data);
967 local_bh_enable();
968 return 0;
969 }
970 old_ps = data->ps;
971 data->ps = val;
972
973 local_bh_disable();
974 if (old_ps == PS_DISABLED && val != PS_DISABLED) {
975 ieee80211_iterate_active_interfaces_atomic(
976 data->hw, IEEE80211_IFACE_ITER_NORMAL,
977 hwsim_send_nullfunc_ps, data);
978 } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
979 ieee80211_iterate_active_interfaces_atomic(
980 data->hw, IEEE80211_IFACE_ITER_NORMAL,
981 hwsim_send_nullfunc_no_ps, data);
982 }
983 local_bh_enable();
984
985 return 0;
986 }
987
988 DEFINE_DEBUGFS_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
989 "%llu\n");
990
hwsim_write_simulate_radar(void * dat,u64 val)991 static int hwsim_write_simulate_radar(void *dat, u64 val)
992 {
993 struct mac80211_hwsim_data *data = dat;
994
995 ieee80211_radar_detected(data->hw);
996
997 return 0;
998 }
999
1000 DEFINE_DEBUGFS_ATTRIBUTE(hwsim_simulate_radar, NULL,
1001 hwsim_write_simulate_radar, "%llu\n");
1002
hwsim_fops_group_read(void * dat,u64 * val)1003 static int hwsim_fops_group_read(void *dat, u64 *val)
1004 {
1005 struct mac80211_hwsim_data *data = dat;
1006 *val = data->group;
1007 return 0;
1008 }
1009
hwsim_fops_group_write(void * dat,u64 val)1010 static int hwsim_fops_group_write(void *dat, u64 val)
1011 {
1012 struct mac80211_hwsim_data *data = dat;
1013 data->group = val;
1014 return 0;
1015 }
1016
1017 DEFINE_DEBUGFS_ATTRIBUTE(hwsim_fops_group,
1018 hwsim_fops_group_read, hwsim_fops_group_write,
1019 "%llx\n");
1020
hwsim_fops_rx_rssi_read(void * dat,u64 * val)1021 static int hwsim_fops_rx_rssi_read(void *dat, u64 *val)
1022 {
1023 struct mac80211_hwsim_data *data = dat;
1024 *val = data->rx_rssi;
1025 return 0;
1026 }
1027
hwsim_fops_rx_rssi_write(void * dat,u64 val)1028 static int hwsim_fops_rx_rssi_write(void *dat, u64 val)
1029 {
1030 struct mac80211_hwsim_data *data = dat;
1031 int rssi = (int)val;
1032
1033 if (rssi >= 0 || rssi < -100)
1034 return -EINVAL;
1035
1036 data->rx_rssi = rssi;
1037 return 0;
1038 }
1039
1040 DEFINE_DEBUGFS_ATTRIBUTE(hwsim_fops_rx_rssi,
1041 hwsim_fops_rx_rssi_read, hwsim_fops_rx_rssi_write,
1042 "%lld\n");
1043
hwsim_mon_xmit(struct sk_buff * skb,struct net_device * dev)1044 static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
1045 struct net_device *dev)
1046 {
1047 /* TODO: allow packet injection */
1048 dev_kfree_skb(skb);
1049 return NETDEV_TX_OK;
1050 }
1051
mac80211_hwsim_get_tsf_raw(void)1052 static inline u64 mac80211_hwsim_get_tsf_raw(void)
1053 {
1054 return ktime_to_us(ktime_get_real());
1055 }
1056
__mac80211_hwsim_get_tsf(struct mac80211_hwsim_data * data)1057 static __le64 __mac80211_hwsim_get_tsf(struct mac80211_hwsim_data *data)
1058 {
1059 u64 now = mac80211_hwsim_get_tsf_raw();
1060 return cpu_to_le64(now + data->tsf_offset);
1061 }
1062
mac80211_hwsim_get_tsf(struct ieee80211_hw * hw,struct ieee80211_vif * vif)1063 static u64 mac80211_hwsim_get_tsf(struct ieee80211_hw *hw,
1064 struct ieee80211_vif *vif)
1065 {
1066 struct mac80211_hwsim_data *data = hw->priv;
1067 return le64_to_cpu(__mac80211_hwsim_get_tsf(data));
1068 }
1069
mac80211_hwsim_set_tsf(struct ieee80211_hw * hw,struct ieee80211_vif * vif,u64 tsf)1070 static void mac80211_hwsim_set_tsf(struct ieee80211_hw *hw,
1071 struct ieee80211_vif *vif, u64 tsf)
1072 {
1073 struct mac80211_hwsim_data *data = hw->priv;
1074 u64 now = mac80211_hwsim_get_tsf(hw, vif);
1075 u32 bcn_int = data->beacon_int;
1076 u64 delta = abs(tsf - now);
1077
1078 /* adjust after beaconing with new timestamp at old TBTT */
1079 if (tsf > now) {
1080 data->tsf_offset += delta;
1081 data->bcn_delta = do_div(delta, bcn_int);
1082 } else {
1083 data->tsf_offset -= delta;
1084 data->bcn_delta = -(s64)do_div(delta, bcn_int);
1085 }
1086 }
1087
mac80211_hwsim_monitor_rx(struct ieee80211_hw * hw,struct sk_buff * tx_skb,struct ieee80211_channel * chan)1088 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
1089 struct sk_buff *tx_skb,
1090 struct ieee80211_channel *chan)
1091 {
1092 struct mac80211_hwsim_data *data = hw->priv;
1093 struct sk_buff *skb;
1094 struct hwsim_radiotap_hdr *hdr;
1095 u16 flags, bitrate;
1096 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
1097 struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
1098
1099 if (!txrate)
1100 bitrate = 0;
1101 else
1102 bitrate = txrate->bitrate;
1103
1104 if (!netif_running(hwsim_mon))
1105 return;
1106
1107 skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
1108 if (skb == NULL)
1109 return;
1110
1111 hdr = skb_push(skb, sizeof(*hdr));
1112 hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
1113 hdr->hdr.it_pad = 0;
1114 hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
1115 hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
1116 (1 << IEEE80211_RADIOTAP_RATE) |
1117 (1 << IEEE80211_RADIOTAP_TSFT) |
1118 (1 << IEEE80211_RADIOTAP_CHANNEL));
1119 hdr->rt_tsft = __mac80211_hwsim_get_tsf(data);
1120 hdr->rt_flags = 0;
1121 hdr->rt_rate = bitrate / 5;
1122 hdr->rt_channel = cpu_to_le16(chan->center_freq);
1123 flags = IEEE80211_CHAN_2GHZ;
1124 if (txrate && txrate->flags & IEEE80211_RATE_ERP_G)
1125 flags |= IEEE80211_CHAN_OFDM;
1126 else
1127 flags |= IEEE80211_CHAN_CCK;
1128 hdr->rt_chbitmask = cpu_to_le16(flags);
1129
1130 skb->dev = hwsim_mon;
1131 skb_reset_mac_header(skb);
1132 skb->ip_summed = CHECKSUM_UNNECESSARY;
1133 skb->pkt_type = PACKET_OTHERHOST;
1134 skb->protocol = htons(ETH_P_802_2);
1135 memset(skb->cb, 0, sizeof(skb->cb));
1136 netif_rx(skb);
1137 }
1138
1139
mac80211_hwsim_monitor_ack(struct ieee80211_channel * chan,const u8 * addr)1140 static void mac80211_hwsim_monitor_ack(struct ieee80211_channel *chan,
1141 const u8 *addr)
1142 {
1143 struct sk_buff *skb;
1144 struct hwsim_radiotap_ack_hdr *hdr;
1145 u16 flags;
1146 struct ieee80211_hdr *hdr11;
1147
1148 if (!netif_running(hwsim_mon))
1149 return;
1150
1151 skb = dev_alloc_skb(100);
1152 if (skb == NULL)
1153 return;
1154
1155 hdr = skb_put(skb, sizeof(*hdr));
1156 hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
1157 hdr->hdr.it_pad = 0;
1158 hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
1159 hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
1160 (1 << IEEE80211_RADIOTAP_CHANNEL));
1161 hdr->rt_flags = 0;
1162 hdr->pad = 0;
1163 hdr->rt_channel = cpu_to_le16(chan->center_freq);
1164 flags = IEEE80211_CHAN_2GHZ;
1165 hdr->rt_chbitmask = cpu_to_le16(flags);
1166
1167 hdr11 = skb_put(skb, 10);
1168 hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
1169 IEEE80211_STYPE_ACK);
1170 hdr11->duration_id = cpu_to_le16(0);
1171 memcpy(hdr11->addr1, addr, ETH_ALEN);
1172
1173 skb->dev = hwsim_mon;
1174 skb_reset_mac_header(skb);
1175 skb->ip_summed = CHECKSUM_UNNECESSARY;
1176 skb->pkt_type = PACKET_OTHERHOST;
1177 skb->protocol = htons(ETH_P_802_2);
1178 memset(skb->cb, 0, sizeof(skb->cb));
1179 netif_rx(skb);
1180 }
1181
1182 struct mac80211_hwsim_addr_match_data {
1183 u8 addr[ETH_ALEN];
1184 bool ret;
1185 };
1186
mac80211_hwsim_addr_iter(void * data,u8 * mac,struct ieee80211_vif * vif)1187 static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
1188 struct ieee80211_vif *vif)
1189 {
1190 struct mac80211_hwsim_addr_match_data *md = data;
1191
1192 if (memcmp(mac, md->addr, ETH_ALEN) == 0)
1193 md->ret = true;
1194 }
1195
mac80211_hwsim_addr_match(struct mac80211_hwsim_data * data,const u8 * addr)1196 static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
1197 const u8 *addr)
1198 {
1199 struct mac80211_hwsim_addr_match_data md = {
1200 .ret = false,
1201 };
1202
1203 if (data->scanning && memcmp(addr, data->scan_addr, ETH_ALEN) == 0)
1204 return true;
1205
1206 memcpy(md.addr, addr, ETH_ALEN);
1207
1208 ieee80211_iterate_active_interfaces_atomic(data->hw,
1209 IEEE80211_IFACE_ITER_NORMAL,
1210 mac80211_hwsim_addr_iter,
1211 &md);
1212
1213 return md.ret;
1214 }
1215
hwsim_ps_rx_ok(struct mac80211_hwsim_data * data,struct sk_buff * skb)1216 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
1217 struct sk_buff *skb)
1218 {
1219 switch (data->ps) {
1220 case PS_DISABLED:
1221 return true;
1222 case PS_ENABLED:
1223 return false;
1224 case PS_AUTO_POLL:
1225 /* TODO: accept (some) Beacons by default and other frames only
1226 * if pending PS-Poll has been sent */
1227 return true;
1228 case PS_MANUAL_POLL:
1229 /* Allow unicast frames to own address if there is a pending
1230 * PS-Poll */
1231 if (data->ps_poll_pending &&
1232 mac80211_hwsim_addr_match(data, skb->data + 4)) {
1233 data->ps_poll_pending = false;
1234 return true;
1235 }
1236 return false;
1237 }
1238
1239 return true;
1240 }
1241
hwsim_unicast_netgroup(struct mac80211_hwsim_data * data,struct sk_buff * skb,int portid)1242 static int hwsim_unicast_netgroup(struct mac80211_hwsim_data *data,
1243 struct sk_buff *skb, int portid)
1244 {
1245 struct net *net;
1246 bool found = false;
1247 int res = -ENOENT;
1248
1249 rcu_read_lock();
1250 for_each_net_rcu(net) {
1251 if (data->netgroup == hwsim_net_get_netgroup(net)) {
1252 res = genlmsg_unicast(net, skb, portid);
1253 found = true;
1254 break;
1255 }
1256 }
1257 rcu_read_unlock();
1258
1259 if (!found)
1260 nlmsg_free(skb);
1261
1262 return res;
1263 }
1264
mac80211_hwsim_config_mac_nl(struct ieee80211_hw * hw,const u8 * addr,bool add)1265 static void mac80211_hwsim_config_mac_nl(struct ieee80211_hw *hw,
1266 const u8 *addr, bool add)
1267 {
1268 struct mac80211_hwsim_data *data = hw->priv;
1269 u32 _portid = READ_ONCE(data->wmediumd);
1270 struct sk_buff *skb;
1271 void *msg_head;
1272
1273 if (!_portid && !hwsim_virtio_enabled)
1274 return;
1275
1276 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_ATOMIC);
1277 if (!skb)
1278 return;
1279
1280 msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
1281 add ? HWSIM_CMD_ADD_MAC_ADDR :
1282 HWSIM_CMD_DEL_MAC_ADDR);
1283 if (!msg_head) {
1284 pr_debug("mac80211_hwsim: problem with msg_head\n");
1285 goto nla_put_failure;
1286 }
1287
1288 if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
1289 ETH_ALEN, data->addresses[1].addr))
1290 goto nla_put_failure;
1291
1292 if (nla_put(skb, HWSIM_ATTR_ADDR_RECEIVER, ETH_ALEN, addr))
1293 goto nla_put_failure;
1294
1295 genlmsg_end(skb, msg_head);
1296
1297 if (hwsim_virtio_enabled)
1298 hwsim_tx_virtio(data, skb);
1299 else
1300 hwsim_unicast_netgroup(data, skb, _portid);
1301 return;
1302 nla_put_failure:
1303 nlmsg_free(skb);
1304 }
1305
trans_tx_rate_flags_ieee2hwsim(struct ieee80211_tx_rate * rate)1306 static inline u16 trans_tx_rate_flags_ieee2hwsim(struct ieee80211_tx_rate *rate)
1307 {
1308 u16 result = 0;
1309
1310 if (rate->flags & IEEE80211_TX_RC_USE_RTS_CTS)
1311 result |= MAC80211_HWSIM_TX_RC_USE_RTS_CTS;
1312 if (rate->flags & IEEE80211_TX_RC_USE_CTS_PROTECT)
1313 result |= MAC80211_HWSIM_TX_RC_USE_CTS_PROTECT;
1314 if (rate->flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE)
1315 result |= MAC80211_HWSIM_TX_RC_USE_SHORT_PREAMBLE;
1316 if (rate->flags & IEEE80211_TX_RC_MCS)
1317 result |= MAC80211_HWSIM_TX_RC_MCS;
1318 if (rate->flags & IEEE80211_TX_RC_GREEN_FIELD)
1319 result |= MAC80211_HWSIM_TX_RC_GREEN_FIELD;
1320 if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
1321 result |= MAC80211_HWSIM_TX_RC_40_MHZ_WIDTH;
1322 if (rate->flags & IEEE80211_TX_RC_DUP_DATA)
1323 result |= MAC80211_HWSIM_TX_RC_DUP_DATA;
1324 if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
1325 result |= MAC80211_HWSIM_TX_RC_SHORT_GI;
1326 if (rate->flags & IEEE80211_TX_RC_VHT_MCS)
1327 result |= MAC80211_HWSIM_TX_RC_VHT_MCS;
1328 if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
1329 result |= MAC80211_HWSIM_TX_RC_80_MHZ_WIDTH;
1330 if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
1331 result |= MAC80211_HWSIM_TX_RC_160_MHZ_WIDTH;
1332
1333 return result;
1334 }
1335
mac80211_hwsim_tx_frame_nl(struct ieee80211_hw * hw,struct sk_buff * my_skb,int dst_portid,struct ieee80211_channel * channel)1336 static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
1337 struct sk_buff *my_skb,
1338 int dst_portid,
1339 struct ieee80211_channel *channel)
1340 {
1341 struct sk_buff *skb;
1342 struct mac80211_hwsim_data *data = hw->priv;
1343 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) my_skb->data;
1344 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(my_skb);
1345 void *msg_head;
1346 unsigned int hwsim_flags = 0;
1347 int i;
1348 struct hwsim_tx_rate tx_attempts[IEEE80211_TX_MAX_RATES];
1349 struct hwsim_tx_rate_flag tx_attempts_flags[IEEE80211_TX_MAX_RATES];
1350 uintptr_t cookie;
1351
1352 if (data->ps != PS_DISABLED)
1353 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1354 /* If the queue contains MAX_QUEUE skb's drop some */
1355 if (skb_queue_len(&data->pending) >= MAX_QUEUE) {
1356 /* Dropping until WARN_QUEUE level */
1357 while (skb_queue_len(&data->pending) >= WARN_QUEUE) {
1358 ieee80211_free_txskb(hw, skb_dequeue(&data->pending));
1359 data->tx_dropped++;
1360 }
1361 }
1362
1363 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_ATOMIC);
1364 if (skb == NULL)
1365 goto nla_put_failure;
1366
1367 msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
1368 HWSIM_CMD_FRAME);
1369 if (msg_head == NULL) {
1370 pr_debug("mac80211_hwsim: problem with msg_head\n");
1371 goto nla_put_failure;
1372 }
1373
1374 if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
1375 ETH_ALEN, data->addresses[1].addr))
1376 goto nla_put_failure;
1377
1378 /* We get the skb->data */
1379 if (nla_put(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data))
1380 goto nla_put_failure;
1381
1382 /* We get the flags for this transmission, and we translate them to
1383 wmediumd flags */
1384
1385 if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
1386 hwsim_flags |= HWSIM_TX_CTL_REQ_TX_STATUS;
1387
1388 if (info->flags & IEEE80211_TX_CTL_NO_ACK)
1389 hwsim_flags |= HWSIM_TX_CTL_NO_ACK;
1390
1391 if (nla_put_u32(skb, HWSIM_ATTR_FLAGS, hwsim_flags))
1392 goto nla_put_failure;
1393
1394 if (nla_put_u32(skb, HWSIM_ATTR_FREQ, channel->center_freq))
1395 goto nla_put_failure;
1396
1397 /* We get the tx control (rate and retries) info*/
1398
1399 for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
1400 tx_attempts[i].idx = info->status.rates[i].idx;
1401 tx_attempts_flags[i].idx = info->status.rates[i].idx;
1402 tx_attempts[i].count = info->status.rates[i].count;
1403 tx_attempts_flags[i].flags =
1404 trans_tx_rate_flags_ieee2hwsim(
1405 &info->status.rates[i]);
1406 }
1407
1408 if (nla_put(skb, HWSIM_ATTR_TX_INFO,
1409 sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
1410 tx_attempts))
1411 goto nla_put_failure;
1412
1413 if (nla_put(skb, HWSIM_ATTR_TX_INFO_FLAGS,
1414 sizeof(struct hwsim_tx_rate_flag) * IEEE80211_TX_MAX_RATES,
1415 tx_attempts_flags))
1416 goto nla_put_failure;
1417
1418 /* We create a cookie to identify this skb */
1419 cookie = atomic_inc_return(&data->pending_cookie);
1420 info->rate_driver_data[0] = (void *)cookie;
1421 if (nla_put_u64_64bit(skb, HWSIM_ATTR_COOKIE, cookie, HWSIM_ATTR_PAD))
1422 goto nla_put_failure;
1423
1424 genlmsg_end(skb, msg_head);
1425
1426 if (hwsim_virtio_enabled) {
1427 if (hwsim_tx_virtio(data, skb))
1428 goto err_free_txskb;
1429 } else {
1430 if (hwsim_unicast_netgroup(data, skb, dst_portid))
1431 goto err_free_txskb;
1432 }
1433
1434 /* Enqueue the packet */
1435 skb_queue_tail(&data->pending, my_skb);
1436 data->tx_pkts++;
1437 data->tx_bytes += my_skb->len;
1438 return;
1439
1440 nla_put_failure:
1441 nlmsg_free(skb);
1442 err_free_txskb:
1443 pr_debug("mac80211_hwsim: error occurred in %s\n", __func__);
1444 ieee80211_free_txskb(hw, my_skb);
1445 data->tx_failed++;
1446 }
1447
hwsim_chans_compat(struct ieee80211_channel * c1,struct ieee80211_channel * c2)1448 static bool hwsim_chans_compat(struct ieee80211_channel *c1,
1449 struct ieee80211_channel *c2)
1450 {
1451 if (!c1 || !c2)
1452 return false;
1453
1454 return c1->center_freq == c2->center_freq;
1455 }
1456
1457 struct tx_iter_data {
1458 struct ieee80211_channel *channel;
1459 bool receive;
1460 };
1461
mac80211_hwsim_tx_iter(void * _data,u8 * addr,struct ieee80211_vif * vif)1462 static void mac80211_hwsim_tx_iter(void *_data, u8 *addr,
1463 struct ieee80211_vif *vif)
1464 {
1465 struct tx_iter_data *data = _data;
1466
1467 if (!vif->bss_conf.chanctx_conf)
1468 return;
1469
1470 if (!hwsim_chans_compat(data->channel,
1471 rcu_dereference(vif->bss_conf.chanctx_conf)->def.chan))
1472 return;
1473
1474 data->receive = true;
1475 }
1476
mac80211_hwsim_add_vendor_rtap(struct sk_buff * skb)1477 static void mac80211_hwsim_add_vendor_rtap(struct sk_buff *skb)
1478 {
1479 /*
1480 * To enable this code, #define the HWSIM_RADIOTAP_OUI,
1481 * e.g. like this:
1482 * #define HWSIM_RADIOTAP_OUI "\x02\x00\x00"
1483 * (but you should use a valid OUI, not that)
1484 *
1485 * If anyone wants to 'donate' a radiotap OUI/subns code
1486 * please send a patch removing this #ifdef and changing
1487 * the values accordingly.
1488 */
1489 #ifdef HWSIM_RADIOTAP_OUI
1490 struct ieee80211_vendor_radiotap *rtap;
1491
1492 /*
1493 * Note that this code requires the headroom in the SKB
1494 * that was allocated earlier.
1495 */
1496 rtap = skb_push(skb, sizeof(*rtap) + 8 + 4);
1497 rtap->oui[0] = HWSIM_RADIOTAP_OUI[0];
1498 rtap->oui[1] = HWSIM_RADIOTAP_OUI[1];
1499 rtap->oui[2] = HWSIM_RADIOTAP_OUI[2];
1500 rtap->subns = 127;
1501
1502 /*
1503 * Radiotap vendor namespaces can (and should) also be
1504 * split into fields by using the standard radiotap
1505 * presence bitmap mechanism. Use just BIT(0) here for
1506 * the presence bitmap.
1507 */
1508 rtap->present = BIT(0);
1509 /* We have 8 bytes of (dummy) data */
1510 rtap->len = 8;
1511 /* For testing, also require it to be aligned */
1512 rtap->align = 8;
1513 /* And also test that padding works, 4 bytes */
1514 rtap->pad = 4;
1515 /* push the data */
1516 memcpy(rtap->data, "ABCDEFGH", 8);
1517 /* make sure to clear padding, mac80211 doesn't */
1518 memset(rtap->data + 8, 0, 4);
1519
1520 IEEE80211_SKB_RXCB(skb)->flag |= RX_FLAG_RADIOTAP_VENDOR_DATA;
1521 #endif
1522 }
1523
mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw * hw,struct sk_buff * skb,struct ieee80211_channel * chan)1524 static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
1525 struct sk_buff *skb,
1526 struct ieee80211_channel *chan)
1527 {
1528 struct mac80211_hwsim_data *data = hw->priv, *data2;
1529 bool ack = false;
1530 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1531 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1532 struct ieee80211_rx_status rx_status;
1533 u64 now;
1534
1535 memset(&rx_status, 0, sizeof(rx_status));
1536 rx_status.flag |= RX_FLAG_MACTIME_START;
1537 rx_status.freq = chan->center_freq;
1538 rx_status.freq_offset = chan->freq_offset ? 1 : 0;
1539 rx_status.band = chan->band;
1540 if (info->control.rates[0].flags & IEEE80211_TX_RC_VHT_MCS) {
1541 rx_status.rate_idx =
1542 ieee80211_rate_get_vht_mcs(&info->control.rates[0]);
1543 rx_status.nss =
1544 ieee80211_rate_get_vht_nss(&info->control.rates[0]);
1545 rx_status.encoding = RX_ENC_VHT;
1546 } else {
1547 rx_status.rate_idx = info->control.rates[0].idx;
1548 if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
1549 rx_status.encoding = RX_ENC_HT;
1550 }
1551 if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
1552 rx_status.bw = RATE_INFO_BW_40;
1553 else if (info->control.rates[0].flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
1554 rx_status.bw = RATE_INFO_BW_80;
1555 else if (info->control.rates[0].flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
1556 rx_status.bw = RATE_INFO_BW_160;
1557 else
1558 rx_status.bw = RATE_INFO_BW_20;
1559 if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
1560 rx_status.enc_flags |= RX_ENC_FLAG_SHORT_GI;
1561 /* TODO: simulate optional packet loss */
1562 rx_status.signal = data->rx_rssi;
1563 if (info->control.vif)
1564 rx_status.signal += info->control.vif->bss_conf.txpower;
1565
1566 if (data->ps != PS_DISABLED)
1567 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1568
1569 /* release the skb's source info */
1570 skb_orphan(skb);
1571 skb_dst_drop(skb);
1572 skb->mark = 0;
1573 skb_ext_reset(skb);
1574 nf_reset_ct(skb);
1575
1576 /*
1577 * Get absolute mactime here so all HWs RX at the "same time", and
1578 * absolute TX time for beacon mactime so the timestamp matches.
1579 * Giving beacons a different mactime than non-beacons looks messy, but
1580 * it helps the Toffset be exact and a ~10us mactime discrepancy
1581 * probably doesn't really matter.
1582 */
1583 if (ieee80211_is_beacon(hdr->frame_control) ||
1584 ieee80211_is_probe_resp(hdr->frame_control)) {
1585 rx_status.boottime_ns = ktime_get_boottime_ns();
1586 now = data->abs_bcn_ts;
1587 } else {
1588 now = mac80211_hwsim_get_tsf_raw();
1589 }
1590
1591 /* Copy skb to all enabled radios that are on the current frequency */
1592 spin_lock(&hwsim_radio_lock);
1593 list_for_each_entry(data2, &hwsim_radios, list) {
1594 struct sk_buff *nskb;
1595 struct tx_iter_data tx_iter_data = {
1596 .receive = false,
1597 .channel = chan,
1598 };
1599
1600 if (data == data2)
1601 continue;
1602
1603 if (!data2->started || (data2->idle && !data2->tmp_chan) ||
1604 !hwsim_ps_rx_ok(data2, skb))
1605 continue;
1606
1607 if (!(data->group & data2->group))
1608 continue;
1609
1610 if (data->netgroup != data2->netgroup)
1611 continue;
1612
1613 if (!hwsim_chans_compat(chan, data2->tmp_chan) &&
1614 !hwsim_chans_compat(chan, data2->channel)) {
1615 ieee80211_iterate_active_interfaces_atomic(
1616 data2->hw, IEEE80211_IFACE_ITER_NORMAL,
1617 mac80211_hwsim_tx_iter, &tx_iter_data);
1618 if (!tx_iter_data.receive)
1619 continue;
1620 }
1621
1622 /*
1623 * reserve some space for our vendor and the normal
1624 * radiotap header, since we're copying anyway
1625 */
1626 if (skb->len < PAGE_SIZE && paged_rx) {
1627 struct page *page = alloc_page(GFP_ATOMIC);
1628
1629 if (!page)
1630 continue;
1631
1632 nskb = dev_alloc_skb(128);
1633 if (!nskb) {
1634 __free_page(page);
1635 continue;
1636 }
1637
1638 memcpy(page_address(page), skb->data, skb->len);
1639 skb_add_rx_frag(nskb, 0, page, 0, skb->len, skb->len);
1640 } else {
1641 nskb = skb_copy(skb, GFP_ATOMIC);
1642 if (!nskb)
1643 continue;
1644 }
1645
1646 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
1647 ack = true;
1648
1649 rx_status.mactime = now + data2->tsf_offset;
1650
1651 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
1652
1653 mac80211_hwsim_add_vendor_rtap(nskb);
1654
1655 data2->rx_pkts++;
1656 data2->rx_bytes += nskb->len;
1657 ieee80211_rx_irqsafe(data2->hw, nskb);
1658 }
1659 spin_unlock(&hwsim_radio_lock);
1660
1661 return ack;
1662 }
1663
mac80211_hwsim_tx(struct ieee80211_hw * hw,struct ieee80211_tx_control * control,struct sk_buff * skb)1664 static void mac80211_hwsim_tx(struct ieee80211_hw *hw,
1665 struct ieee80211_tx_control *control,
1666 struct sk_buff *skb)
1667 {
1668 struct mac80211_hwsim_data *data = hw->priv;
1669 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1670 struct ieee80211_hdr *hdr = (void *)skb->data;
1671 struct ieee80211_chanctx_conf *chanctx_conf;
1672 struct ieee80211_channel *channel;
1673 bool ack;
1674 enum nl80211_chan_width confbw = NL80211_CHAN_WIDTH_20_NOHT;
1675 u32 _portid, i;
1676
1677 if (WARN_ON(skb->len < 10)) {
1678 /* Should not happen; just a sanity check for addr1 use */
1679 ieee80211_free_txskb(hw, skb);
1680 return;
1681 }
1682
1683 if (!data->use_chanctx) {
1684 channel = data->channel;
1685 confbw = data->bw;
1686 } else if (txi->hw_queue == 4) {
1687 channel = data->tmp_chan;
1688 } else {
1689 struct ieee80211_bss_conf *bss_conf;
1690
1691 bss_conf = &txi->control.vif->bss_conf;
1692
1693 chanctx_conf = rcu_dereference(bss_conf->chanctx_conf);
1694 if (chanctx_conf) {
1695 channel = chanctx_conf->def.chan;
1696 confbw = chanctx_conf->def.width;
1697 } else {
1698 channel = NULL;
1699 }
1700 }
1701
1702 if (WARN(!channel, "TX w/o channel - queue = %d\n", txi->hw_queue)) {
1703 ieee80211_free_txskb(hw, skb);
1704 return;
1705 }
1706
1707 if (data->idle && !data->tmp_chan) {
1708 wiphy_dbg(hw->wiphy, "Trying to TX when idle - reject\n");
1709 ieee80211_free_txskb(hw, skb);
1710 return;
1711 }
1712
1713 if (txi->control.vif)
1714 hwsim_check_magic(txi->control.vif);
1715 if (control->sta)
1716 hwsim_check_sta_magic(control->sta);
1717
1718 if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE))
1719 ieee80211_get_tx_rates(txi->control.vif, control->sta, skb,
1720 txi->control.rates,
1721 ARRAY_SIZE(txi->control.rates));
1722
1723 for (i = 0; i < ARRAY_SIZE(txi->control.rates); i++) {
1724 u16 rflags = txi->control.rates[i].flags;
1725 /* initialize to data->bw for 5/10 MHz handling */
1726 enum nl80211_chan_width bw = data->bw;
1727
1728 if (txi->control.rates[i].idx == -1)
1729 break;
1730
1731 if (rflags & IEEE80211_TX_RC_40_MHZ_WIDTH)
1732 bw = NL80211_CHAN_WIDTH_40;
1733 else if (rflags & IEEE80211_TX_RC_80_MHZ_WIDTH)
1734 bw = NL80211_CHAN_WIDTH_80;
1735 else if (rflags & IEEE80211_TX_RC_160_MHZ_WIDTH)
1736 bw = NL80211_CHAN_WIDTH_160;
1737
1738 if (WARN_ON(hwsim_get_chanwidth(bw) > hwsim_get_chanwidth(confbw)))
1739 return;
1740 }
1741
1742 if (skb->len >= 24 + 8 &&
1743 ieee80211_is_probe_resp(hdr->frame_control)) {
1744 /* fake header transmission time */
1745 struct ieee80211_mgmt *mgmt;
1746 struct ieee80211_rate *txrate;
1747 /* TODO: get MCS */
1748 int bitrate = 100;
1749 u64 ts;
1750
1751 mgmt = (struct ieee80211_mgmt *)skb->data;
1752 txrate = ieee80211_get_tx_rate(hw, txi);
1753 if (txrate)
1754 bitrate = txrate->bitrate;
1755 ts = mac80211_hwsim_get_tsf_raw();
1756 mgmt->u.probe_resp.timestamp =
1757 cpu_to_le64(ts + data->tsf_offset +
1758 24 * 8 * 10 / bitrate);
1759 }
1760
1761 mac80211_hwsim_monitor_rx(hw, skb, channel);
1762
1763 /* wmediumd mode check */
1764 _portid = READ_ONCE(data->wmediumd);
1765
1766 if (_portid || hwsim_virtio_enabled)
1767 return mac80211_hwsim_tx_frame_nl(hw, skb, _portid, channel);
1768
1769 /* NO wmediumd detected, perfect medium simulation */
1770 data->tx_pkts++;
1771 data->tx_bytes += skb->len;
1772 ack = mac80211_hwsim_tx_frame_no_nl(hw, skb, channel);
1773
1774 if (ack && skb->len >= 16)
1775 mac80211_hwsim_monitor_ack(channel, hdr->addr2);
1776
1777 ieee80211_tx_info_clear_status(txi);
1778
1779 /* frame was transmitted at most favorable rate at first attempt */
1780 txi->control.rates[0].count = 1;
1781 txi->control.rates[1].idx = -1;
1782
1783 if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
1784 txi->flags |= IEEE80211_TX_STAT_ACK;
1785 ieee80211_tx_status_irqsafe(hw, skb);
1786 }
1787
1788
mac80211_hwsim_start(struct ieee80211_hw * hw)1789 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
1790 {
1791 struct mac80211_hwsim_data *data = hw->priv;
1792 wiphy_dbg(hw->wiphy, "%s\n", __func__);
1793 data->started = true;
1794 return 0;
1795 }
1796
1797
mac80211_hwsim_stop(struct ieee80211_hw * hw)1798 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
1799 {
1800 struct mac80211_hwsim_data *data = hw->priv;
1801
1802 data->started = false;
1803 hrtimer_cancel(&data->beacon_timer);
1804
1805 while (!skb_queue_empty(&data->pending))
1806 ieee80211_free_txskb(hw, skb_dequeue(&data->pending));
1807
1808 wiphy_dbg(hw->wiphy, "%s\n", __func__);
1809 }
1810
1811
mac80211_hwsim_add_interface(struct ieee80211_hw * hw,struct ieee80211_vif * vif)1812 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
1813 struct ieee80211_vif *vif)
1814 {
1815 wiphy_dbg(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1816 __func__, ieee80211_vif_type_p2p(vif),
1817 vif->addr);
1818 hwsim_set_magic(vif);
1819
1820 if (vif->type != NL80211_IFTYPE_MONITOR)
1821 mac80211_hwsim_config_mac_nl(hw, vif->addr, true);
1822
1823 vif->cab_queue = 0;
1824 vif->hw_queue[IEEE80211_AC_VO] = 0;
1825 vif->hw_queue[IEEE80211_AC_VI] = 1;
1826 vif->hw_queue[IEEE80211_AC_BE] = 2;
1827 vif->hw_queue[IEEE80211_AC_BK] = 3;
1828
1829 return 0;
1830 }
1831
1832
mac80211_hwsim_change_interface(struct ieee80211_hw * hw,struct ieee80211_vif * vif,enum nl80211_iftype newtype,bool newp2p)1833 static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
1834 struct ieee80211_vif *vif,
1835 enum nl80211_iftype newtype,
1836 bool newp2p)
1837 {
1838 newtype = ieee80211_iftype_p2p(newtype, newp2p);
1839 wiphy_dbg(hw->wiphy,
1840 "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
1841 __func__, ieee80211_vif_type_p2p(vif),
1842 newtype, vif->addr);
1843 hwsim_check_magic(vif);
1844
1845 /*
1846 * interface may change from non-AP to AP in
1847 * which case this needs to be set up again
1848 */
1849 vif->cab_queue = 0;
1850
1851 return 0;
1852 }
1853
mac80211_hwsim_remove_interface(struct ieee80211_hw * hw,struct ieee80211_vif * vif)1854 static void mac80211_hwsim_remove_interface(
1855 struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1856 {
1857 wiphy_dbg(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1858 __func__, ieee80211_vif_type_p2p(vif),
1859 vif->addr);
1860 hwsim_check_magic(vif);
1861 hwsim_clear_magic(vif);
1862 if (vif->type != NL80211_IFTYPE_MONITOR)
1863 mac80211_hwsim_config_mac_nl(hw, vif->addr, false);
1864 }
1865
mac80211_hwsim_tx_frame(struct ieee80211_hw * hw,struct sk_buff * skb,struct ieee80211_channel * chan)1866 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
1867 struct sk_buff *skb,
1868 struct ieee80211_channel *chan)
1869 {
1870 struct mac80211_hwsim_data *data = hw->priv;
1871 u32 _pid = READ_ONCE(data->wmediumd);
1872
1873 if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE)) {
1874 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1875 ieee80211_get_tx_rates(txi->control.vif, NULL, skb,
1876 txi->control.rates,
1877 ARRAY_SIZE(txi->control.rates));
1878 }
1879
1880 mac80211_hwsim_monitor_rx(hw, skb, chan);
1881
1882 if (_pid || hwsim_virtio_enabled)
1883 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid, chan);
1884
1885 data->tx_pkts++;
1886 data->tx_bytes += skb->len;
1887 mac80211_hwsim_tx_frame_no_nl(hw, skb, chan);
1888 dev_kfree_skb(skb);
1889 }
1890
mac80211_hwsim_beacon_tx(void * arg,u8 * mac,struct ieee80211_vif * vif)1891 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
1892 struct ieee80211_vif *vif)
1893 {
1894 struct mac80211_hwsim_data *data = arg;
1895 struct ieee80211_hw *hw = data->hw;
1896 struct ieee80211_tx_info *info;
1897 struct ieee80211_rate *txrate;
1898 struct ieee80211_mgmt *mgmt;
1899 struct sk_buff *skb;
1900 /* TODO: get MCS */
1901 int bitrate = 100;
1902
1903 hwsim_check_magic(vif);
1904
1905 if (vif->type != NL80211_IFTYPE_AP &&
1906 vif->type != NL80211_IFTYPE_MESH_POINT &&
1907 vif->type != NL80211_IFTYPE_ADHOC &&
1908 vif->type != NL80211_IFTYPE_OCB)
1909 return;
1910
1911 skb = ieee80211_beacon_get(hw, vif);
1912 if (skb == NULL)
1913 return;
1914 info = IEEE80211_SKB_CB(skb);
1915 if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE))
1916 ieee80211_get_tx_rates(vif, NULL, skb,
1917 info->control.rates,
1918 ARRAY_SIZE(info->control.rates));
1919
1920 txrate = ieee80211_get_tx_rate(hw, info);
1921 if (txrate)
1922 bitrate = txrate->bitrate;
1923
1924 mgmt = (struct ieee80211_mgmt *) skb->data;
1925 /* fake header transmission time */
1926 data->abs_bcn_ts = mac80211_hwsim_get_tsf_raw();
1927 if (ieee80211_is_s1g_beacon(mgmt->frame_control)) {
1928 struct ieee80211_ext *ext = (void *) mgmt;
1929
1930 ext->u.s1g_beacon.timestamp = cpu_to_le32(data->abs_bcn_ts +
1931 data->tsf_offset +
1932 10 * 8 * 10 /
1933 bitrate);
1934 } else {
1935 mgmt->u.beacon.timestamp = cpu_to_le64(data->abs_bcn_ts +
1936 data->tsf_offset +
1937 24 * 8 * 10 /
1938 bitrate);
1939 }
1940
1941 mac80211_hwsim_tx_frame(hw, skb,
1942 rcu_dereference(vif->bss_conf.chanctx_conf)->def.chan);
1943
1944 while ((skb = ieee80211_get_buffered_bc(hw, vif)) != NULL) {
1945 mac80211_hwsim_tx_frame(hw, skb,
1946 rcu_dereference(vif->bss_conf.chanctx_conf)->def.chan);
1947 }
1948
1949 if (vif->bss_conf.csa_active && ieee80211_beacon_cntdwn_is_complete(vif))
1950 ieee80211_csa_finish(vif);
1951 }
1952
1953 static enum hrtimer_restart
mac80211_hwsim_beacon(struct hrtimer * timer)1954 mac80211_hwsim_beacon(struct hrtimer *timer)
1955 {
1956 struct mac80211_hwsim_data *data =
1957 container_of(timer, struct mac80211_hwsim_data, beacon_timer);
1958 struct ieee80211_hw *hw = data->hw;
1959 u64 bcn_int = data->beacon_int;
1960
1961 if (!data->started)
1962 return HRTIMER_NORESTART;
1963
1964 ieee80211_iterate_active_interfaces_atomic(
1965 hw, IEEE80211_IFACE_ITER_NORMAL,
1966 mac80211_hwsim_beacon_tx, data);
1967
1968 /* beacon at new TBTT + beacon interval */
1969 if (data->bcn_delta) {
1970 bcn_int -= data->bcn_delta;
1971 data->bcn_delta = 0;
1972 }
1973 hrtimer_forward_now(&data->beacon_timer,
1974 ns_to_ktime(bcn_int * NSEC_PER_USEC));
1975 return HRTIMER_RESTART;
1976 }
1977
1978 static const char * const hwsim_chanwidths[] = {
1979 [NL80211_CHAN_WIDTH_5] = "ht5",
1980 [NL80211_CHAN_WIDTH_10] = "ht10",
1981 [NL80211_CHAN_WIDTH_20_NOHT] = "noht",
1982 [NL80211_CHAN_WIDTH_20] = "ht20",
1983 [NL80211_CHAN_WIDTH_40] = "ht40",
1984 [NL80211_CHAN_WIDTH_80] = "vht80",
1985 [NL80211_CHAN_WIDTH_80P80] = "vht80p80",
1986 [NL80211_CHAN_WIDTH_160] = "vht160",
1987 [NL80211_CHAN_WIDTH_1] = "1MHz",
1988 [NL80211_CHAN_WIDTH_2] = "2MHz",
1989 [NL80211_CHAN_WIDTH_4] = "4MHz",
1990 [NL80211_CHAN_WIDTH_8] = "8MHz",
1991 [NL80211_CHAN_WIDTH_16] = "16MHz",
1992 };
1993
mac80211_hwsim_config(struct ieee80211_hw * hw,u32 changed)1994 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
1995 {
1996 struct mac80211_hwsim_data *data = hw->priv;
1997 struct ieee80211_conf *conf = &hw->conf;
1998 static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
1999 [IEEE80211_SMPS_AUTOMATIC] = "auto",
2000 [IEEE80211_SMPS_OFF] = "off",
2001 [IEEE80211_SMPS_STATIC] = "static",
2002 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
2003 };
2004 int idx;
2005
2006 if (conf->chandef.chan)
2007 wiphy_dbg(hw->wiphy,
2008 "%s (freq=%d(%d - %d)/%s idle=%d ps=%d smps=%s)\n",
2009 __func__,
2010 conf->chandef.chan->center_freq,
2011 conf->chandef.center_freq1,
2012 conf->chandef.center_freq2,
2013 hwsim_chanwidths[conf->chandef.width],
2014 !!(conf->flags & IEEE80211_CONF_IDLE),
2015 !!(conf->flags & IEEE80211_CONF_PS),
2016 smps_modes[conf->smps_mode]);
2017 else
2018 wiphy_dbg(hw->wiphy,
2019 "%s (freq=0 idle=%d ps=%d smps=%s)\n",
2020 __func__,
2021 !!(conf->flags & IEEE80211_CONF_IDLE),
2022 !!(conf->flags & IEEE80211_CONF_PS),
2023 smps_modes[conf->smps_mode]);
2024
2025 data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
2026
2027 WARN_ON(conf->chandef.chan && data->use_chanctx);
2028
2029 mutex_lock(&data->mutex);
2030 if (data->scanning && conf->chandef.chan) {
2031 for (idx = 0; idx < ARRAY_SIZE(data->survey_data); idx++) {
2032 if (data->survey_data[idx].channel == data->channel) {
2033 data->survey_data[idx].start =
2034 data->survey_data[idx].next_start;
2035 data->survey_data[idx].end = jiffies;
2036 break;
2037 }
2038 }
2039
2040 data->channel = conf->chandef.chan;
2041 data->bw = conf->chandef.width;
2042
2043 for (idx = 0; idx < ARRAY_SIZE(data->survey_data); idx++) {
2044 if (data->survey_data[idx].channel &&
2045 data->survey_data[idx].channel != data->channel)
2046 continue;
2047 data->survey_data[idx].channel = data->channel;
2048 data->survey_data[idx].next_start = jiffies;
2049 break;
2050 }
2051 } else {
2052 data->channel = conf->chandef.chan;
2053 data->bw = conf->chandef.width;
2054 }
2055 mutex_unlock(&data->mutex);
2056
2057 if (!data->started || !data->beacon_int)
2058 hrtimer_cancel(&data->beacon_timer);
2059 else if (!hrtimer_is_queued(&data->beacon_timer)) {
2060 u64 tsf = mac80211_hwsim_get_tsf(hw, NULL);
2061 u32 bcn_int = data->beacon_int;
2062 u64 until_tbtt = bcn_int - do_div(tsf, bcn_int);
2063
2064 hrtimer_start(&data->beacon_timer,
2065 ns_to_ktime(until_tbtt * NSEC_PER_USEC),
2066 HRTIMER_MODE_REL_SOFT);
2067 }
2068
2069 return 0;
2070 }
2071
2072
mac80211_hwsim_configure_filter(struct ieee80211_hw * hw,unsigned int changed_flags,unsigned int * total_flags,u64 multicast)2073 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
2074 unsigned int changed_flags,
2075 unsigned int *total_flags,u64 multicast)
2076 {
2077 struct mac80211_hwsim_data *data = hw->priv;
2078
2079 wiphy_dbg(hw->wiphy, "%s\n", __func__);
2080
2081 data->rx_filter = 0;
2082 if (*total_flags & FIF_ALLMULTI)
2083 data->rx_filter |= FIF_ALLMULTI;
2084 if (*total_flags & FIF_MCAST_ACTION)
2085 data->rx_filter |= FIF_MCAST_ACTION;
2086
2087 *total_flags = data->rx_filter;
2088 }
2089
mac80211_hwsim_bcn_en_iter(void * data,u8 * mac,struct ieee80211_vif * vif)2090 static void mac80211_hwsim_bcn_en_iter(void *data, u8 *mac,
2091 struct ieee80211_vif *vif)
2092 {
2093 unsigned int *count = data;
2094 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
2095
2096 if (vp->bcn_en)
2097 (*count)++;
2098 }
2099
mac80211_hwsim_bss_info_changed(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_bss_conf * info,u32 changed)2100 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
2101 struct ieee80211_vif *vif,
2102 struct ieee80211_bss_conf *info,
2103 u32 changed)
2104 {
2105 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
2106 struct mac80211_hwsim_data *data = hw->priv;
2107
2108 hwsim_check_magic(vif);
2109
2110 wiphy_dbg(hw->wiphy, "%s(changed=0x%x vif->addr=%pM)\n",
2111 __func__, changed, vif->addr);
2112
2113 if (changed & BSS_CHANGED_BSSID) {
2114 wiphy_dbg(hw->wiphy, "%s: BSSID changed: %pM\n",
2115 __func__, info->bssid);
2116 memcpy(vp->bssid, info->bssid, ETH_ALEN);
2117 }
2118
2119 if (changed & BSS_CHANGED_ASSOC) {
2120 wiphy_dbg(hw->wiphy, " ASSOC: assoc=%d aid=%d\n",
2121 info->assoc, info->aid);
2122 vp->assoc = info->assoc;
2123 vp->aid = info->aid;
2124 }
2125
2126 if (changed & BSS_CHANGED_BEACON_ENABLED) {
2127 wiphy_dbg(hw->wiphy, " BCN EN: %d (BI=%u)\n",
2128 info->enable_beacon, info->beacon_int);
2129 vp->bcn_en = info->enable_beacon;
2130 if (data->started &&
2131 !hrtimer_is_queued(&data->beacon_timer) &&
2132 info->enable_beacon) {
2133 u64 tsf, until_tbtt;
2134 u32 bcn_int;
2135 data->beacon_int = info->beacon_int * 1024;
2136 tsf = mac80211_hwsim_get_tsf(hw, vif);
2137 bcn_int = data->beacon_int;
2138 until_tbtt = bcn_int - do_div(tsf, bcn_int);
2139
2140 hrtimer_start(&data->beacon_timer,
2141 ns_to_ktime(until_tbtt * NSEC_PER_USEC),
2142 HRTIMER_MODE_REL_SOFT);
2143 } else if (!info->enable_beacon) {
2144 unsigned int count = 0;
2145 ieee80211_iterate_active_interfaces_atomic(
2146 data->hw, IEEE80211_IFACE_ITER_NORMAL,
2147 mac80211_hwsim_bcn_en_iter, &count);
2148 wiphy_dbg(hw->wiphy, " beaconing vifs remaining: %u",
2149 count);
2150 if (count == 0) {
2151 hrtimer_cancel(&data->beacon_timer);
2152 data->beacon_int = 0;
2153 }
2154 }
2155 }
2156
2157 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
2158 wiphy_dbg(hw->wiphy, " ERP_CTS_PROT: %d\n",
2159 info->use_cts_prot);
2160 }
2161
2162 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
2163 wiphy_dbg(hw->wiphy, " ERP_PREAMBLE: %d\n",
2164 info->use_short_preamble);
2165 }
2166
2167 if (changed & BSS_CHANGED_ERP_SLOT) {
2168 wiphy_dbg(hw->wiphy, " ERP_SLOT: %d\n", info->use_short_slot);
2169 }
2170
2171 if (changed & BSS_CHANGED_HT) {
2172 wiphy_dbg(hw->wiphy, " HT: op_mode=0x%x\n",
2173 info->ht_operation_mode);
2174 }
2175
2176 if (changed & BSS_CHANGED_BASIC_RATES) {
2177 wiphy_dbg(hw->wiphy, " BASIC_RATES: 0x%llx\n",
2178 (unsigned long long) info->basic_rates);
2179 }
2180
2181 if (changed & BSS_CHANGED_TXPOWER)
2182 wiphy_dbg(hw->wiphy, " TX Power: %d dBm\n", info->txpower);
2183 }
2184
2185 static void
mac80211_hwsim_sta_rc_update(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta,u32 changed)2186 mac80211_hwsim_sta_rc_update(struct ieee80211_hw *hw,
2187 struct ieee80211_vif *vif,
2188 struct ieee80211_sta *sta,
2189 u32 changed)
2190 {
2191 struct mac80211_hwsim_data *data = hw->priv;
2192 u32 bw = U32_MAX;
2193 enum nl80211_chan_width confbw = NL80211_CHAN_WIDTH_20_NOHT;
2194
2195 switch (sta->deflink.bandwidth) {
2196 #define C(_bw) case IEEE80211_STA_RX_BW_##_bw: bw = _bw; break
2197 C(20);
2198 C(40);
2199 C(80);
2200 C(160);
2201 C(320);
2202 #undef C
2203 }
2204
2205 if (!data->use_chanctx) {
2206 confbw = data->bw;
2207 } else {
2208 struct ieee80211_chanctx_conf *chanctx_conf;
2209
2210 rcu_read_lock();
2211 chanctx_conf = rcu_dereference(vif->bss_conf.chanctx_conf);
2212
2213 if (!WARN_ON(!chanctx_conf))
2214 confbw = chanctx_conf->def.width;
2215 rcu_read_unlock();
2216 }
2217
2218 WARN(bw > hwsim_get_chanwidth(confbw),
2219 "intf %pM: bad STA %pM bandwidth %d MHz (%d) > channel config %d MHz (%d)\n",
2220 vif->addr, sta->addr, bw, sta->deflink.bandwidth,
2221 hwsim_get_chanwidth(data->bw), data->bw);
2222 }
2223
mac80211_hwsim_sta_add(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta)2224 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
2225 struct ieee80211_vif *vif,
2226 struct ieee80211_sta *sta)
2227 {
2228 hwsim_check_magic(vif);
2229 hwsim_set_sta_magic(sta);
2230 mac80211_hwsim_sta_rc_update(hw, vif, sta, 0);
2231
2232 return 0;
2233 }
2234
mac80211_hwsim_sta_remove(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta)2235 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
2236 struct ieee80211_vif *vif,
2237 struct ieee80211_sta *sta)
2238 {
2239 hwsim_check_magic(vif);
2240 hwsim_clear_sta_magic(sta);
2241
2242 return 0;
2243 }
2244
mac80211_hwsim_sta_notify(struct ieee80211_hw * hw,struct ieee80211_vif * vif,enum sta_notify_cmd cmd,struct ieee80211_sta * sta)2245 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
2246 struct ieee80211_vif *vif,
2247 enum sta_notify_cmd cmd,
2248 struct ieee80211_sta *sta)
2249 {
2250 hwsim_check_magic(vif);
2251
2252 switch (cmd) {
2253 case STA_NOTIFY_SLEEP:
2254 case STA_NOTIFY_AWAKE:
2255 /* TODO: make good use of these flags */
2256 break;
2257 default:
2258 WARN(1, "Invalid sta notify: %d\n", cmd);
2259 break;
2260 }
2261 }
2262
mac80211_hwsim_set_tim(struct ieee80211_hw * hw,struct ieee80211_sta * sta,bool set)2263 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
2264 struct ieee80211_sta *sta,
2265 bool set)
2266 {
2267 hwsim_check_sta_magic(sta);
2268 return 0;
2269 }
2270
mac80211_hwsim_conf_tx(struct ieee80211_hw * hw,struct ieee80211_vif * vif,u16 queue,const struct ieee80211_tx_queue_params * params)2271 static int mac80211_hwsim_conf_tx(
2272 struct ieee80211_hw *hw,
2273 struct ieee80211_vif *vif, u16 queue,
2274 const struct ieee80211_tx_queue_params *params)
2275 {
2276 wiphy_dbg(hw->wiphy,
2277 "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
2278 __func__, queue,
2279 params->txop, params->cw_min,
2280 params->cw_max, params->aifs);
2281 return 0;
2282 }
2283
mac80211_hwsim_get_survey(struct ieee80211_hw * hw,int idx,struct survey_info * survey)2284 static int mac80211_hwsim_get_survey(struct ieee80211_hw *hw, int idx,
2285 struct survey_info *survey)
2286 {
2287 struct mac80211_hwsim_data *hwsim = hw->priv;
2288
2289 if (idx < 0 || idx >= ARRAY_SIZE(hwsim->survey_data))
2290 return -ENOENT;
2291
2292 mutex_lock(&hwsim->mutex);
2293 survey->channel = hwsim->survey_data[idx].channel;
2294 if (!survey->channel) {
2295 mutex_unlock(&hwsim->mutex);
2296 return -ENOENT;
2297 }
2298
2299 /*
2300 * Magically conjured dummy values --- this is only ok for simulated hardware.
2301 *
2302 * A real driver which cannot determine real values noise MUST NOT
2303 * report any, especially not a magically conjured ones :-)
2304 */
2305 survey->filled = SURVEY_INFO_NOISE_DBM |
2306 SURVEY_INFO_TIME |
2307 SURVEY_INFO_TIME_BUSY;
2308 survey->noise = -92;
2309 survey->time =
2310 jiffies_to_msecs(hwsim->survey_data[idx].end -
2311 hwsim->survey_data[idx].start);
2312 /* report 12.5% of channel time is used */
2313 survey->time_busy = survey->time/8;
2314 mutex_unlock(&hwsim->mutex);
2315
2316 return 0;
2317 }
2318
2319 #ifdef CONFIG_NL80211_TESTMODE
2320 /*
2321 * This section contains example code for using netlink
2322 * attributes with the testmode command in nl80211.
2323 */
2324
2325 /* These enums need to be kept in sync with userspace */
2326 enum hwsim_testmode_attr {
2327 __HWSIM_TM_ATTR_INVALID = 0,
2328 HWSIM_TM_ATTR_CMD = 1,
2329 HWSIM_TM_ATTR_PS = 2,
2330
2331 /* keep last */
2332 __HWSIM_TM_ATTR_AFTER_LAST,
2333 HWSIM_TM_ATTR_MAX = __HWSIM_TM_ATTR_AFTER_LAST - 1
2334 };
2335
2336 enum hwsim_testmode_cmd {
2337 HWSIM_TM_CMD_SET_PS = 0,
2338 HWSIM_TM_CMD_GET_PS = 1,
2339 HWSIM_TM_CMD_STOP_QUEUES = 2,
2340 HWSIM_TM_CMD_WAKE_QUEUES = 3,
2341 };
2342
2343 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
2344 [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
2345 [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
2346 };
2347
mac80211_hwsim_testmode_cmd(struct ieee80211_hw * hw,struct ieee80211_vif * vif,void * data,int len)2348 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
2349 struct ieee80211_vif *vif,
2350 void *data, int len)
2351 {
2352 struct mac80211_hwsim_data *hwsim = hw->priv;
2353 struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
2354 struct sk_buff *skb;
2355 int err, ps;
2356
2357 err = nla_parse_deprecated(tb, HWSIM_TM_ATTR_MAX, data, len,
2358 hwsim_testmode_policy, NULL);
2359 if (err)
2360 return err;
2361
2362 if (!tb[HWSIM_TM_ATTR_CMD])
2363 return -EINVAL;
2364
2365 switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
2366 case HWSIM_TM_CMD_SET_PS:
2367 if (!tb[HWSIM_TM_ATTR_PS])
2368 return -EINVAL;
2369 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
2370 return hwsim_fops_ps_write(hwsim, ps);
2371 case HWSIM_TM_CMD_GET_PS:
2372 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
2373 nla_total_size(sizeof(u32)));
2374 if (!skb)
2375 return -ENOMEM;
2376 if (nla_put_u32(skb, HWSIM_TM_ATTR_PS, hwsim->ps))
2377 goto nla_put_failure;
2378 return cfg80211_testmode_reply(skb);
2379 case HWSIM_TM_CMD_STOP_QUEUES:
2380 ieee80211_stop_queues(hw);
2381 return 0;
2382 case HWSIM_TM_CMD_WAKE_QUEUES:
2383 ieee80211_wake_queues(hw);
2384 return 0;
2385 default:
2386 return -EOPNOTSUPP;
2387 }
2388
2389 nla_put_failure:
2390 kfree_skb(skb);
2391 return -ENOBUFS;
2392 }
2393 #endif
2394
mac80211_hwsim_ampdu_action(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_ampdu_params * params)2395 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
2396 struct ieee80211_vif *vif,
2397 struct ieee80211_ampdu_params *params)
2398 {
2399 struct ieee80211_sta *sta = params->sta;
2400 enum ieee80211_ampdu_mlme_action action = params->action;
2401 u16 tid = params->tid;
2402
2403 switch (action) {
2404 case IEEE80211_AMPDU_TX_START:
2405 return IEEE80211_AMPDU_TX_START_IMMEDIATE;
2406 case IEEE80211_AMPDU_TX_STOP_CONT:
2407 case IEEE80211_AMPDU_TX_STOP_FLUSH:
2408 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
2409 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
2410 break;
2411 case IEEE80211_AMPDU_TX_OPERATIONAL:
2412 break;
2413 case IEEE80211_AMPDU_RX_START:
2414 case IEEE80211_AMPDU_RX_STOP:
2415 break;
2416 default:
2417 return -EOPNOTSUPP;
2418 }
2419
2420 return 0;
2421 }
2422
mac80211_hwsim_flush(struct ieee80211_hw * hw,struct ieee80211_vif * vif,u32 queues,bool drop)2423 static void mac80211_hwsim_flush(struct ieee80211_hw *hw,
2424 struct ieee80211_vif *vif,
2425 u32 queues, bool drop)
2426 {
2427 /* Not implemented, queues only on kernel side */
2428 }
2429
hw_scan_work(struct work_struct * work)2430 static void hw_scan_work(struct work_struct *work)
2431 {
2432 struct mac80211_hwsim_data *hwsim =
2433 container_of(work, struct mac80211_hwsim_data, hw_scan.work);
2434 struct cfg80211_scan_request *req = hwsim->hw_scan_request;
2435 int dwell, i;
2436
2437 mutex_lock(&hwsim->mutex);
2438 if (hwsim->scan_chan_idx >= req->n_channels) {
2439 struct cfg80211_scan_info info = {
2440 .aborted = false,
2441 };
2442
2443 wiphy_dbg(hwsim->hw->wiphy, "hw scan complete\n");
2444 ieee80211_scan_completed(hwsim->hw, &info);
2445 hwsim->hw_scan_request = NULL;
2446 hwsim->hw_scan_vif = NULL;
2447 hwsim->tmp_chan = NULL;
2448 mutex_unlock(&hwsim->mutex);
2449 mac80211_hwsim_config_mac_nl(hwsim->hw, hwsim->scan_addr,
2450 false);
2451 return;
2452 }
2453
2454 wiphy_dbg(hwsim->hw->wiphy, "hw scan %d MHz\n",
2455 req->channels[hwsim->scan_chan_idx]->center_freq);
2456
2457 hwsim->tmp_chan = req->channels[hwsim->scan_chan_idx];
2458 if (hwsim->tmp_chan->flags & (IEEE80211_CHAN_NO_IR |
2459 IEEE80211_CHAN_RADAR) ||
2460 !req->n_ssids) {
2461 dwell = 120;
2462 } else {
2463 dwell = 30;
2464 /* send probes */
2465 for (i = 0; i < req->n_ssids; i++) {
2466 struct sk_buff *probe;
2467 struct ieee80211_mgmt *mgmt;
2468
2469 probe = ieee80211_probereq_get(hwsim->hw,
2470 hwsim->scan_addr,
2471 req->ssids[i].ssid,
2472 req->ssids[i].ssid_len,
2473 req->ie_len);
2474 if (!probe)
2475 continue;
2476
2477 mgmt = (struct ieee80211_mgmt *) probe->data;
2478 memcpy(mgmt->da, req->bssid, ETH_ALEN);
2479 memcpy(mgmt->bssid, req->bssid, ETH_ALEN);
2480
2481 if (req->ie_len)
2482 skb_put_data(probe, req->ie, req->ie_len);
2483
2484 rcu_read_lock();
2485 if (!ieee80211_tx_prepare_skb(hwsim->hw,
2486 hwsim->hw_scan_vif,
2487 probe,
2488 hwsim->tmp_chan->band,
2489 NULL)) {
2490 rcu_read_unlock();
2491 kfree_skb(probe);
2492 continue;
2493 }
2494
2495 local_bh_disable();
2496 mac80211_hwsim_tx_frame(hwsim->hw, probe,
2497 hwsim->tmp_chan);
2498 rcu_read_unlock();
2499 local_bh_enable();
2500 }
2501 }
2502 ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan,
2503 msecs_to_jiffies(dwell));
2504 hwsim->survey_data[hwsim->scan_chan_idx].channel = hwsim->tmp_chan;
2505 hwsim->survey_data[hwsim->scan_chan_idx].start = jiffies;
2506 hwsim->survey_data[hwsim->scan_chan_idx].end =
2507 jiffies + msecs_to_jiffies(dwell);
2508 hwsim->scan_chan_idx++;
2509 mutex_unlock(&hwsim->mutex);
2510 }
2511
mac80211_hwsim_hw_scan(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_scan_request * hw_req)2512 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
2513 struct ieee80211_vif *vif,
2514 struct ieee80211_scan_request *hw_req)
2515 {
2516 struct mac80211_hwsim_data *hwsim = hw->priv;
2517 struct cfg80211_scan_request *req = &hw_req->req;
2518
2519 mutex_lock(&hwsim->mutex);
2520 if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
2521 mutex_unlock(&hwsim->mutex);
2522 return -EBUSY;
2523 }
2524 hwsim->hw_scan_request = req;
2525 hwsim->hw_scan_vif = vif;
2526 hwsim->scan_chan_idx = 0;
2527 if (req->flags & NL80211_SCAN_FLAG_RANDOM_ADDR)
2528 get_random_mask_addr(hwsim->scan_addr,
2529 hw_req->req.mac_addr,
2530 hw_req->req.mac_addr_mask);
2531 else
2532 memcpy(hwsim->scan_addr, vif->addr, ETH_ALEN);
2533 memset(hwsim->survey_data, 0, sizeof(hwsim->survey_data));
2534 mutex_unlock(&hwsim->mutex);
2535
2536 mac80211_hwsim_config_mac_nl(hw, hwsim->scan_addr, true);
2537 wiphy_dbg(hw->wiphy, "hwsim hw_scan request\n");
2538
2539 ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan, 0);
2540
2541 return 0;
2542 }
2543
mac80211_hwsim_cancel_hw_scan(struct ieee80211_hw * hw,struct ieee80211_vif * vif)2544 static void mac80211_hwsim_cancel_hw_scan(struct ieee80211_hw *hw,
2545 struct ieee80211_vif *vif)
2546 {
2547 struct mac80211_hwsim_data *hwsim = hw->priv;
2548 struct cfg80211_scan_info info = {
2549 .aborted = true,
2550 };
2551
2552 wiphy_dbg(hw->wiphy, "hwsim cancel_hw_scan\n");
2553
2554 cancel_delayed_work_sync(&hwsim->hw_scan);
2555
2556 mutex_lock(&hwsim->mutex);
2557 ieee80211_scan_completed(hwsim->hw, &info);
2558 hwsim->tmp_chan = NULL;
2559 hwsim->hw_scan_request = NULL;
2560 hwsim->hw_scan_vif = NULL;
2561 mutex_unlock(&hwsim->mutex);
2562 }
2563
mac80211_hwsim_sw_scan(struct ieee80211_hw * hw,struct ieee80211_vif * vif,const u8 * mac_addr)2564 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw,
2565 struct ieee80211_vif *vif,
2566 const u8 *mac_addr)
2567 {
2568 struct mac80211_hwsim_data *hwsim = hw->priv;
2569
2570 mutex_lock(&hwsim->mutex);
2571
2572 if (hwsim->scanning) {
2573 pr_debug("two hwsim sw_scans detected!\n");
2574 goto out;
2575 }
2576
2577 pr_debug("hwsim sw_scan request, prepping stuff\n");
2578
2579 memcpy(hwsim->scan_addr, mac_addr, ETH_ALEN);
2580 mac80211_hwsim_config_mac_nl(hw, hwsim->scan_addr, true);
2581 hwsim->scanning = true;
2582 memset(hwsim->survey_data, 0, sizeof(hwsim->survey_data));
2583
2584 out:
2585 mutex_unlock(&hwsim->mutex);
2586 }
2587
mac80211_hwsim_sw_scan_complete(struct ieee80211_hw * hw,struct ieee80211_vif * vif)2588 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw,
2589 struct ieee80211_vif *vif)
2590 {
2591 struct mac80211_hwsim_data *hwsim = hw->priv;
2592
2593 mutex_lock(&hwsim->mutex);
2594
2595 pr_debug("hwsim sw_scan_complete\n");
2596 hwsim->scanning = false;
2597 mac80211_hwsim_config_mac_nl(hw, hwsim->scan_addr, false);
2598 eth_zero_addr(hwsim->scan_addr);
2599
2600 mutex_unlock(&hwsim->mutex);
2601 }
2602
hw_roc_start(struct work_struct * work)2603 static void hw_roc_start(struct work_struct *work)
2604 {
2605 struct mac80211_hwsim_data *hwsim =
2606 container_of(work, struct mac80211_hwsim_data, roc_start.work);
2607
2608 mutex_lock(&hwsim->mutex);
2609
2610 wiphy_dbg(hwsim->hw->wiphy, "hwsim ROC begins\n");
2611 hwsim->tmp_chan = hwsim->roc_chan;
2612 ieee80211_ready_on_channel(hwsim->hw);
2613
2614 ieee80211_queue_delayed_work(hwsim->hw, &hwsim->roc_done,
2615 msecs_to_jiffies(hwsim->roc_duration));
2616
2617 mutex_unlock(&hwsim->mutex);
2618 }
2619
hw_roc_done(struct work_struct * work)2620 static void hw_roc_done(struct work_struct *work)
2621 {
2622 struct mac80211_hwsim_data *hwsim =
2623 container_of(work, struct mac80211_hwsim_data, roc_done.work);
2624
2625 mutex_lock(&hwsim->mutex);
2626 ieee80211_remain_on_channel_expired(hwsim->hw);
2627 hwsim->tmp_chan = NULL;
2628 mutex_unlock(&hwsim->mutex);
2629
2630 wiphy_dbg(hwsim->hw->wiphy, "hwsim ROC expired\n");
2631 }
2632
mac80211_hwsim_roc(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_channel * chan,int duration,enum ieee80211_roc_type type)2633 static int mac80211_hwsim_roc(struct ieee80211_hw *hw,
2634 struct ieee80211_vif *vif,
2635 struct ieee80211_channel *chan,
2636 int duration,
2637 enum ieee80211_roc_type type)
2638 {
2639 struct mac80211_hwsim_data *hwsim = hw->priv;
2640
2641 mutex_lock(&hwsim->mutex);
2642 if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
2643 mutex_unlock(&hwsim->mutex);
2644 return -EBUSY;
2645 }
2646
2647 hwsim->roc_chan = chan;
2648 hwsim->roc_duration = duration;
2649 mutex_unlock(&hwsim->mutex);
2650
2651 wiphy_dbg(hw->wiphy, "hwsim ROC (%d MHz, %d ms)\n",
2652 chan->center_freq, duration);
2653 ieee80211_queue_delayed_work(hw, &hwsim->roc_start, HZ/50);
2654
2655 return 0;
2656 }
2657
mac80211_hwsim_croc(struct ieee80211_hw * hw,struct ieee80211_vif * vif)2658 static int mac80211_hwsim_croc(struct ieee80211_hw *hw,
2659 struct ieee80211_vif *vif)
2660 {
2661 struct mac80211_hwsim_data *hwsim = hw->priv;
2662
2663 cancel_delayed_work_sync(&hwsim->roc_start);
2664 cancel_delayed_work_sync(&hwsim->roc_done);
2665
2666 mutex_lock(&hwsim->mutex);
2667 hwsim->tmp_chan = NULL;
2668 mutex_unlock(&hwsim->mutex);
2669
2670 wiphy_dbg(hw->wiphy, "hwsim ROC canceled\n");
2671
2672 return 0;
2673 }
2674
mac80211_hwsim_add_chanctx(struct ieee80211_hw * hw,struct ieee80211_chanctx_conf * ctx)2675 static int mac80211_hwsim_add_chanctx(struct ieee80211_hw *hw,
2676 struct ieee80211_chanctx_conf *ctx)
2677 {
2678 struct mac80211_hwsim_data *hwsim = hw->priv;
2679
2680 mutex_lock(&hwsim->mutex);
2681 hwsim->chanctx = ctx;
2682 mutex_unlock(&hwsim->mutex);
2683 hwsim_set_chanctx_magic(ctx);
2684 wiphy_dbg(hw->wiphy,
2685 "add channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2686 ctx->def.chan->center_freq, ctx->def.width,
2687 ctx->def.center_freq1, ctx->def.center_freq2);
2688 return 0;
2689 }
2690
mac80211_hwsim_remove_chanctx(struct ieee80211_hw * hw,struct ieee80211_chanctx_conf * ctx)2691 static void mac80211_hwsim_remove_chanctx(struct ieee80211_hw *hw,
2692 struct ieee80211_chanctx_conf *ctx)
2693 {
2694 struct mac80211_hwsim_data *hwsim = hw->priv;
2695
2696 mutex_lock(&hwsim->mutex);
2697 hwsim->chanctx = NULL;
2698 mutex_unlock(&hwsim->mutex);
2699 wiphy_dbg(hw->wiphy,
2700 "remove channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2701 ctx->def.chan->center_freq, ctx->def.width,
2702 ctx->def.center_freq1, ctx->def.center_freq2);
2703 hwsim_check_chanctx_magic(ctx);
2704 hwsim_clear_chanctx_magic(ctx);
2705 }
2706
mac80211_hwsim_change_chanctx(struct ieee80211_hw * hw,struct ieee80211_chanctx_conf * ctx,u32 changed)2707 static void mac80211_hwsim_change_chanctx(struct ieee80211_hw *hw,
2708 struct ieee80211_chanctx_conf *ctx,
2709 u32 changed)
2710 {
2711 struct mac80211_hwsim_data *hwsim = hw->priv;
2712
2713 mutex_lock(&hwsim->mutex);
2714 hwsim->chanctx = ctx;
2715 mutex_unlock(&hwsim->mutex);
2716 hwsim_check_chanctx_magic(ctx);
2717 wiphy_dbg(hw->wiphy,
2718 "change channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2719 ctx->def.chan->center_freq, ctx->def.width,
2720 ctx->def.center_freq1, ctx->def.center_freq2);
2721 }
2722
mac80211_hwsim_assign_vif_chanctx(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_chanctx_conf * ctx)2723 static int mac80211_hwsim_assign_vif_chanctx(struct ieee80211_hw *hw,
2724 struct ieee80211_vif *vif,
2725 struct ieee80211_chanctx_conf *ctx)
2726 {
2727 hwsim_check_magic(vif);
2728 hwsim_check_chanctx_magic(ctx);
2729
2730 return 0;
2731 }
2732
mac80211_hwsim_unassign_vif_chanctx(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_chanctx_conf * ctx)2733 static void mac80211_hwsim_unassign_vif_chanctx(struct ieee80211_hw *hw,
2734 struct ieee80211_vif *vif,
2735 struct ieee80211_chanctx_conf *ctx)
2736 {
2737 hwsim_check_magic(vif);
2738 hwsim_check_chanctx_magic(ctx);
2739 }
2740
2741 static const char mac80211_hwsim_gstrings_stats[][ETH_GSTRING_LEN] = {
2742 "tx_pkts_nic",
2743 "tx_bytes_nic",
2744 "rx_pkts_nic",
2745 "rx_bytes_nic",
2746 "d_tx_dropped",
2747 "d_tx_failed",
2748 "d_ps_mode",
2749 "d_group",
2750 };
2751
2752 #define MAC80211_HWSIM_SSTATS_LEN ARRAY_SIZE(mac80211_hwsim_gstrings_stats)
2753
mac80211_hwsim_get_et_strings(struct ieee80211_hw * hw,struct ieee80211_vif * vif,u32 sset,u8 * data)2754 static void mac80211_hwsim_get_et_strings(struct ieee80211_hw *hw,
2755 struct ieee80211_vif *vif,
2756 u32 sset, u8 *data)
2757 {
2758 if (sset == ETH_SS_STATS)
2759 memcpy(data, *mac80211_hwsim_gstrings_stats,
2760 sizeof(mac80211_hwsim_gstrings_stats));
2761 }
2762
mac80211_hwsim_get_et_sset_count(struct ieee80211_hw * hw,struct ieee80211_vif * vif,int sset)2763 static int mac80211_hwsim_get_et_sset_count(struct ieee80211_hw *hw,
2764 struct ieee80211_vif *vif, int sset)
2765 {
2766 if (sset == ETH_SS_STATS)
2767 return MAC80211_HWSIM_SSTATS_LEN;
2768 return 0;
2769 }
2770
mac80211_hwsim_get_et_stats(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ethtool_stats * stats,u64 * data)2771 static void mac80211_hwsim_get_et_stats(struct ieee80211_hw *hw,
2772 struct ieee80211_vif *vif,
2773 struct ethtool_stats *stats, u64 *data)
2774 {
2775 struct mac80211_hwsim_data *ar = hw->priv;
2776 int i = 0;
2777
2778 data[i++] = ar->tx_pkts;
2779 data[i++] = ar->tx_bytes;
2780 data[i++] = ar->rx_pkts;
2781 data[i++] = ar->rx_bytes;
2782 data[i++] = ar->tx_dropped;
2783 data[i++] = ar->tx_failed;
2784 data[i++] = ar->ps;
2785 data[i++] = ar->group;
2786
2787 WARN_ON(i != MAC80211_HWSIM_SSTATS_LEN);
2788 }
2789
mac80211_hwsim_tx_last_beacon(struct ieee80211_hw * hw)2790 static int mac80211_hwsim_tx_last_beacon(struct ieee80211_hw *hw)
2791 {
2792 return 1;
2793 }
2794
2795 #define HWSIM_COMMON_OPS \
2796 .tx = mac80211_hwsim_tx, \
2797 .start = mac80211_hwsim_start, \
2798 .stop = mac80211_hwsim_stop, \
2799 .add_interface = mac80211_hwsim_add_interface, \
2800 .change_interface = mac80211_hwsim_change_interface, \
2801 .remove_interface = mac80211_hwsim_remove_interface, \
2802 .config = mac80211_hwsim_config, \
2803 .configure_filter = mac80211_hwsim_configure_filter, \
2804 .bss_info_changed = mac80211_hwsim_bss_info_changed, \
2805 .tx_last_beacon = mac80211_hwsim_tx_last_beacon, \
2806 .sta_add = mac80211_hwsim_sta_add, \
2807 .sta_remove = mac80211_hwsim_sta_remove, \
2808 .sta_notify = mac80211_hwsim_sta_notify, \
2809 .sta_rc_update = mac80211_hwsim_sta_rc_update, \
2810 .set_tim = mac80211_hwsim_set_tim, \
2811 .conf_tx = mac80211_hwsim_conf_tx, \
2812 .get_survey = mac80211_hwsim_get_survey, \
2813 CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd) \
2814 .ampdu_action = mac80211_hwsim_ampdu_action, \
2815 .flush = mac80211_hwsim_flush, \
2816 .get_tsf = mac80211_hwsim_get_tsf, \
2817 .set_tsf = mac80211_hwsim_set_tsf, \
2818 .get_et_sset_count = mac80211_hwsim_get_et_sset_count, \
2819 .get_et_stats = mac80211_hwsim_get_et_stats, \
2820 .get_et_strings = mac80211_hwsim_get_et_strings,
2821
2822 static const struct ieee80211_ops mac80211_hwsim_ops = {
2823 HWSIM_COMMON_OPS
2824 .sw_scan_start = mac80211_hwsim_sw_scan,
2825 .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
2826 };
2827
2828 static const struct ieee80211_ops mac80211_hwsim_mchan_ops = {
2829 HWSIM_COMMON_OPS
2830 .hw_scan = mac80211_hwsim_hw_scan,
2831 .cancel_hw_scan = mac80211_hwsim_cancel_hw_scan,
2832 .sw_scan_start = NULL,
2833 .sw_scan_complete = NULL,
2834 .remain_on_channel = mac80211_hwsim_roc,
2835 .cancel_remain_on_channel = mac80211_hwsim_croc,
2836 .add_chanctx = mac80211_hwsim_add_chanctx,
2837 .remove_chanctx = mac80211_hwsim_remove_chanctx,
2838 .change_chanctx = mac80211_hwsim_change_chanctx,
2839 .assign_vif_chanctx = mac80211_hwsim_assign_vif_chanctx,
2840 .unassign_vif_chanctx = mac80211_hwsim_unassign_vif_chanctx,
2841 };
2842
2843 struct hwsim_new_radio_params {
2844 unsigned int channels;
2845 const char *reg_alpha2;
2846 const struct ieee80211_regdomain *regd;
2847 bool reg_strict;
2848 bool p2p_device;
2849 bool use_chanctx;
2850 bool destroy_on_close;
2851 const char *hwname;
2852 bool no_vif;
2853 const u8 *perm_addr;
2854 u32 iftypes;
2855 u32 *ciphers;
2856 u8 n_ciphers;
2857 };
2858
hwsim_mcast_config_msg(struct sk_buff * mcast_skb,struct genl_info * info)2859 static void hwsim_mcast_config_msg(struct sk_buff *mcast_skb,
2860 struct genl_info *info)
2861 {
2862 if (info)
2863 genl_notify(&hwsim_genl_family, mcast_skb, info,
2864 HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2865 else
2866 genlmsg_multicast(&hwsim_genl_family, mcast_skb, 0,
2867 HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2868 }
2869
append_radio_msg(struct sk_buff * skb,int id,struct hwsim_new_radio_params * param)2870 static int append_radio_msg(struct sk_buff *skb, int id,
2871 struct hwsim_new_radio_params *param)
2872 {
2873 int ret;
2874
2875 ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
2876 if (ret < 0)
2877 return ret;
2878
2879 if (param->channels) {
2880 ret = nla_put_u32(skb, HWSIM_ATTR_CHANNELS, param->channels);
2881 if (ret < 0)
2882 return ret;
2883 }
2884
2885 if (param->reg_alpha2) {
2886 ret = nla_put(skb, HWSIM_ATTR_REG_HINT_ALPHA2, 2,
2887 param->reg_alpha2);
2888 if (ret < 0)
2889 return ret;
2890 }
2891
2892 if (param->regd) {
2893 int i;
2894
2895 for (i = 0; i < ARRAY_SIZE(hwsim_world_regdom_custom); i++) {
2896 if (hwsim_world_regdom_custom[i] != param->regd)
2897 continue;
2898
2899 ret = nla_put_u32(skb, HWSIM_ATTR_REG_CUSTOM_REG, i);
2900 if (ret < 0)
2901 return ret;
2902 break;
2903 }
2904 }
2905
2906 if (param->reg_strict) {
2907 ret = nla_put_flag(skb, HWSIM_ATTR_REG_STRICT_REG);
2908 if (ret < 0)
2909 return ret;
2910 }
2911
2912 if (param->p2p_device) {
2913 ret = nla_put_flag(skb, HWSIM_ATTR_SUPPORT_P2P_DEVICE);
2914 if (ret < 0)
2915 return ret;
2916 }
2917
2918 if (param->use_chanctx) {
2919 ret = nla_put_flag(skb, HWSIM_ATTR_USE_CHANCTX);
2920 if (ret < 0)
2921 return ret;
2922 }
2923
2924 if (param->hwname) {
2925 ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME,
2926 strlen(param->hwname), param->hwname);
2927 if (ret < 0)
2928 return ret;
2929 }
2930
2931 return 0;
2932 }
2933
hwsim_mcast_new_radio(int id,struct genl_info * info,struct hwsim_new_radio_params * param)2934 static void hwsim_mcast_new_radio(int id, struct genl_info *info,
2935 struct hwsim_new_radio_params *param)
2936 {
2937 struct sk_buff *mcast_skb;
2938 void *data;
2939
2940 mcast_skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2941 if (!mcast_skb)
2942 return;
2943
2944 data = genlmsg_put(mcast_skb, 0, 0, &hwsim_genl_family, 0,
2945 HWSIM_CMD_NEW_RADIO);
2946 if (!data)
2947 goto out_err;
2948
2949 if (append_radio_msg(mcast_skb, id, param) < 0)
2950 goto out_err;
2951
2952 genlmsg_end(mcast_skb, data);
2953
2954 hwsim_mcast_config_msg(mcast_skb, info);
2955 return;
2956
2957 out_err:
2958 nlmsg_free(mcast_skb);
2959 }
2960
2961 static const struct ieee80211_sband_iftype_data sband_capa_2ghz[] = {
2962 {
2963 .types_mask = BIT(NL80211_IFTYPE_STATION) |
2964 BIT(NL80211_IFTYPE_AP),
2965 .he_cap = {
2966 .has_he = true,
2967 .he_cap_elem = {
2968 .mac_cap_info[0] =
2969 IEEE80211_HE_MAC_CAP0_HTC_HE,
2970 .mac_cap_info[1] =
2971 IEEE80211_HE_MAC_CAP1_TF_MAC_PAD_DUR_16US |
2972 IEEE80211_HE_MAC_CAP1_MULTI_TID_AGG_RX_QOS_8,
2973 .mac_cap_info[2] =
2974 IEEE80211_HE_MAC_CAP2_BSR |
2975 IEEE80211_HE_MAC_CAP2_MU_CASCADING |
2976 IEEE80211_HE_MAC_CAP2_ACK_EN,
2977 .mac_cap_info[3] =
2978 IEEE80211_HE_MAC_CAP3_OMI_CONTROL |
2979 IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_EXT_3,
2980 .mac_cap_info[4] = IEEE80211_HE_MAC_CAP4_AMSDU_IN_AMPDU,
2981 .phy_cap_info[1] =
2982 IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK |
2983 IEEE80211_HE_PHY_CAP1_DEVICE_CLASS_A |
2984 IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD |
2985 IEEE80211_HE_PHY_CAP1_MIDAMBLE_RX_TX_MAX_NSTS,
2986 .phy_cap_info[2] =
2987 IEEE80211_HE_PHY_CAP2_NDP_4x_LTF_AND_3_2US |
2988 IEEE80211_HE_PHY_CAP2_STBC_TX_UNDER_80MHZ |
2989 IEEE80211_HE_PHY_CAP2_STBC_RX_UNDER_80MHZ |
2990 IEEE80211_HE_PHY_CAP2_UL_MU_FULL_MU_MIMO |
2991 IEEE80211_HE_PHY_CAP2_UL_MU_PARTIAL_MU_MIMO,
2992
2993 /* Leave all the other PHY capability bytes
2994 * unset, as DCM, beam forming, RU and PPE
2995 * threshold information are not supported
2996 */
2997 },
2998 .he_mcs_nss_supp = {
2999 .rx_mcs_80 = cpu_to_le16(0xfffa),
3000 .tx_mcs_80 = cpu_to_le16(0xfffa),
3001 .rx_mcs_160 = cpu_to_le16(0xffff),
3002 .tx_mcs_160 = cpu_to_le16(0xffff),
3003 .rx_mcs_80p80 = cpu_to_le16(0xffff),
3004 .tx_mcs_80p80 = cpu_to_le16(0xffff),
3005 },
3006 },
3007 .eht_cap = {
3008 .has_eht = true,
3009 .eht_cap_elem = {
3010 .mac_cap_info[0] =
3011 IEEE80211_EHT_MAC_CAP0_NSEP_PRIO_ACCESS |
3012 IEEE80211_EHT_MAC_CAP0_OM_CONTROL |
3013 IEEE80211_EHT_MAC_CAP0_TRIG_TXOP_SHARING_MODE1,
3014 .phy_cap_info[0] =
3015 IEEE80211_EHT_PHY_CAP0_242_TONE_RU_GT20MHZ |
3016 IEEE80211_EHT_PHY_CAP0_NDP_4_EHT_LFT_32_GI |
3017 IEEE80211_EHT_PHY_CAP0_PARTIAL_BW_UL_MU_MIMO |
3018 IEEE80211_EHT_PHY_CAP0_SU_BEAMFORMER |
3019 IEEE80211_EHT_PHY_CAP0_SU_BEAMFORMEE,
3020 .phy_cap_info[3] =
3021 IEEE80211_EHT_PHY_CAP3_NG_16_SU_FEEDBACK |
3022 IEEE80211_EHT_PHY_CAP3_NG_16_MU_FEEDBACK |
3023 IEEE80211_EHT_PHY_CAP3_CODEBOOK_4_2_SU_FDBK |
3024 IEEE80211_EHT_PHY_CAP3_CODEBOOK_7_5_MU_FDBK |
3025 IEEE80211_EHT_PHY_CAP3_TRIG_SU_BF_FDBK |
3026 IEEE80211_EHT_PHY_CAP3_TRIG_MU_BF_PART_BW_FDBK |
3027 IEEE80211_EHT_PHY_CAP3_TRIG_CQI_FDBK,
3028 .phy_cap_info[4] =
3029 IEEE80211_EHT_PHY_CAP4_PART_BW_DL_MU_MIMO |
3030 IEEE80211_EHT_PHY_CAP4_PSR_SR_SUPP |
3031 IEEE80211_EHT_PHY_CAP4_POWER_BOOST_FACT_SUPP |
3032 IEEE80211_EHT_PHY_CAP4_EHT_MU_PPDU_4_EHT_LTF_08_GI |
3033 IEEE80211_EHT_PHY_CAP4_MAX_NC_MASK,
3034 .phy_cap_info[5] =
3035 IEEE80211_EHT_PHY_CAP5_NON_TRIG_CQI_FEEDBACK |
3036 IEEE80211_EHT_PHY_CAP5_TX_LESS_242_TONE_RU_SUPP |
3037 IEEE80211_EHT_PHY_CAP5_RX_LESS_242_TONE_RU_SUPP |
3038 IEEE80211_EHT_PHY_CAP5_PPE_THRESHOLD_PRESENT |
3039 IEEE80211_EHT_PHY_CAP5_COMMON_NOMINAL_PKT_PAD_MASK |
3040 IEEE80211_EHT_PHY_CAP5_MAX_NUM_SUPP_EHT_LTF_MASK,
3041 .phy_cap_info[6] =
3042 IEEE80211_EHT_PHY_CAP6_MAX_NUM_SUPP_EHT_LTF_MASK |
3043 IEEE80211_EHT_PHY_CAP6_MCS15_SUPP_MASK,
3044 .phy_cap_info[7] =
3045 IEEE80211_EHT_PHY_CAP7_20MHZ_STA_RX_NDP_WIDER_BW,
3046 },
3047
3048 /* For all MCS and bandwidth, set 8 NSS for both Tx and
3049 * Rx
3050 */
3051 .eht_mcs_nss_supp = {
3052 /*
3053 * Since B0, B1, B2 and B3 are not set in
3054 * the supported channel width set field in the
3055 * HE PHY capabilities information field the
3056 * device is a 20MHz only device on 2.4GHz band.
3057 */
3058 .only_20mhz = {
3059 .rx_tx_mcs7_max_nss = 0x88,
3060 .rx_tx_mcs9_max_nss = 0x88,
3061 .rx_tx_mcs11_max_nss = 0x88,
3062 .rx_tx_mcs13_max_nss = 0x88,
3063 },
3064 },
3065 /* PPE threshold information is not supported */
3066 },
3067 },
3068 #ifdef CONFIG_MAC80211_MESH
3069 {
3070 .types_mask = BIT(NL80211_IFTYPE_MESH_POINT),
3071 .he_cap = {
3072 .has_he = true,
3073 .he_cap_elem = {
3074 .mac_cap_info[0] =
3075 IEEE80211_HE_MAC_CAP0_HTC_HE,
3076 .mac_cap_info[1] =
3077 IEEE80211_HE_MAC_CAP1_MULTI_TID_AGG_RX_QOS_8,
3078 .mac_cap_info[2] =
3079 IEEE80211_HE_MAC_CAP2_ACK_EN,
3080 .mac_cap_info[3] =
3081 IEEE80211_HE_MAC_CAP3_OMI_CONTROL |
3082 IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_EXT_3,
3083 .mac_cap_info[4] = IEEE80211_HE_MAC_CAP4_AMSDU_IN_AMPDU,
3084 .phy_cap_info[1] =
3085 IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK |
3086 IEEE80211_HE_PHY_CAP1_DEVICE_CLASS_A |
3087 IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD |
3088 IEEE80211_HE_PHY_CAP1_MIDAMBLE_RX_TX_MAX_NSTS,
3089 .phy_cap_info[2] = 0,
3090
3091 /* Leave all the other PHY capability bytes
3092 * unset, as DCM, beam forming, RU and PPE
3093 * threshold information are not supported
3094 */
3095 },
3096 .he_mcs_nss_supp = {
3097 .rx_mcs_80 = cpu_to_le16(0xfffa),
3098 .tx_mcs_80 = cpu_to_le16(0xfffa),
3099 .rx_mcs_160 = cpu_to_le16(0xffff),
3100 .tx_mcs_160 = cpu_to_le16(0xffff),
3101 .rx_mcs_80p80 = cpu_to_le16(0xffff),
3102 .tx_mcs_80p80 = cpu_to_le16(0xffff),
3103 },
3104 },
3105 },
3106 #endif
3107 };
3108
3109 static const struct ieee80211_sband_iftype_data sband_capa_5ghz[] = {
3110 {
3111 /* TODO: should we support other types, e.g., P2P?*/
3112 .types_mask = BIT(NL80211_IFTYPE_STATION) |
3113 BIT(NL80211_IFTYPE_AP),
3114 .he_cap = {
3115 .has_he = true,
3116 .he_cap_elem = {
3117 .mac_cap_info[0] =
3118 IEEE80211_HE_MAC_CAP0_HTC_HE,
3119 .mac_cap_info[1] =
3120 IEEE80211_HE_MAC_CAP1_TF_MAC_PAD_DUR_16US |
3121 IEEE80211_HE_MAC_CAP1_MULTI_TID_AGG_RX_QOS_8,
3122 .mac_cap_info[2] =
3123 IEEE80211_HE_MAC_CAP2_BSR |
3124 IEEE80211_HE_MAC_CAP2_MU_CASCADING |
3125 IEEE80211_HE_MAC_CAP2_ACK_EN,
3126 .mac_cap_info[3] =
3127 IEEE80211_HE_MAC_CAP3_OMI_CONTROL |
3128 IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_EXT_3,
3129 .mac_cap_info[4] = IEEE80211_HE_MAC_CAP4_AMSDU_IN_AMPDU,
3130 .phy_cap_info[0] =
3131 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G |
3132 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G |
3133 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G,
3134 .phy_cap_info[1] =
3135 IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK |
3136 IEEE80211_HE_PHY_CAP1_DEVICE_CLASS_A |
3137 IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD |
3138 IEEE80211_HE_PHY_CAP1_MIDAMBLE_RX_TX_MAX_NSTS,
3139 .phy_cap_info[2] =
3140 IEEE80211_HE_PHY_CAP2_NDP_4x_LTF_AND_3_2US |
3141 IEEE80211_HE_PHY_CAP2_STBC_TX_UNDER_80MHZ |
3142 IEEE80211_HE_PHY_CAP2_STBC_RX_UNDER_80MHZ |
3143 IEEE80211_HE_PHY_CAP2_UL_MU_FULL_MU_MIMO |
3144 IEEE80211_HE_PHY_CAP2_UL_MU_PARTIAL_MU_MIMO,
3145
3146 /* Leave all the other PHY capability bytes
3147 * unset, as DCM, beam forming, RU and PPE
3148 * threshold information are not supported
3149 */
3150 },
3151 .he_mcs_nss_supp = {
3152 .rx_mcs_80 = cpu_to_le16(0xfffa),
3153 .tx_mcs_80 = cpu_to_le16(0xfffa),
3154 .rx_mcs_160 = cpu_to_le16(0xfffa),
3155 .tx_mcs_160 = cpu_to_le16(0xfffa),
3156 .rx_mcs_80p80 = cpu_to_le16(0xfffa),
3157 .tx_mcs_80p80 = cpu_to_le16(0xfffa),
3158 },
3159 },
3160 .eht_cap = {
3161 .has_eht = true,
3162 .eht_cap_elem = {
3163 .mac_cap_info[0] =
3164 IEEE80211_EHT_MAC_CAP0_NSEP_PRIO_ACCESS |
3165 IEEE80211_EHT_MAC_CAP0_OM_CONTROL |
3166 IEEE80211_EHT_MAC_CAP0_TRIG_TXOP_SHARING_MODE1,
3167 .phy_cap_info[0] =
3168 IEEE80211_EHT_PHY_CAP0_242_TONE_RU_GT20MHZ |
3169 IEEE80211_EHT_PHY_CAP0_NDP_4_EHT_LFT_32_GI |
3170 IEEE80211_EHT_PHY_CAP0_PARTIAL_BW_UL_MU_MIMO |
3171 IEEE80211_EHT_PHY_CAP0_SU_BEAMFORMER |
3172 IEEE80211_EHT_PHY_CAP0_SU_BEAMFORMEE |
3173 IEEE80211_EHT_PHY_CAP0_BEAMFORMEE_SS_80MHZ_MASK,
3174 .phy_cap_info[1] =
3175 IEEE80211_EHT_PHY_CAP1_BEAMFORMEE_SS_80MHZ_MASK |
3176 IEEE80211_EHT_PHY_CAP1_BEAMFORMEE_SS_160MHZ_MASK,
3177 .phy_cap_info[2] =
3178 IEEE80211_EHT_PHY_CAP2_SOUNDING_DIM_80MHZ_MASK |
3179 IEEE80211_EHT_PHY_CAP2_SOUNDING_DIM_160MHZ_MASK,
3180 .phy_cap_info[3] =
3181 IEEE80211_EHT_PHY_CAP3_NG_16_SU_FEEDBACK |
3182 IEEE80211_EHT_PHY_CAP3_NG_16_MU_FEEDBACK |
3183 IEEE80211_EHT_PHY_CAP3_CODEBOOK_4_2_SU_FDBK |
3184 IEEE80211_EHT_PHY_CAP3_CODEBOOK_7_5_MU_FDBK |
3185 IEEE80211_EHT_PHY_CAP3_TRIG_SU_BF_FDBK |
3186 IEEE80211_EHT_PHY_CAP3_TRIG_MU_BF_PART_BW_FDBK |
3187 IEEE80211_EHT_PHY_CAP3_TRIG_CQI_FDBK,
3188 .phy_cap_info[4] =
3189 IEEE80211_EHT_PHY_CAP4_PART_BW_DL_MU_MIMO |
3190 IEEE80211_EHT_PHY_CAP4_PSR_SR_SUPP |
3191 IEEE80211_EHT_PHY_CAP4_POWER_BOOST_FACT_SUPP |
3192 IEEE80211_EHT_PHY_CAP4_EHT_MU_PPDU_4_EHT_LTF_08_GI |
3193 IEEE80211_EHT_PHY_CAP4_MAX_NC_MASK,
3194 .phy_cap_info[5] =
3195 IEEE80211_EHT_PHY_CAP5_NON_TRIG_CQI_FEEDBACK |
3196 IEEE80211_EHT_PHY_CAP5_TX_LESS_242_TONE_RU_SUPP |
3197 IEEE80211_EHT_PHY_CAP5_RX_LESS_242_TONE_RU_SUPP |
3198 IEEE80211_EHT_PHY_CAP5_PPE_THRESHOLD_PRESENT |
3199 IEEE80211_EHT_PHY_CAP5_COMMON_NOMINAL_PKT_PAD_MASK |
3200 IEEE80211_EHT_PHY_CAP5_MAX_NUM_SUPP_EHT_LTF_MASK,
3201 .phy_cap_info[6] =
3202 IEEE80211_EHT_PHY_CAP6_MAX_NUM_SUPP_EHT_LTF_MASK |
3203 IEEE80211_EHT_PHY_CAP6_MCS15_SUPP_MASK,
3204 .phy_cap_info[7] =
3205 IEEE80211_EHT_PHY_CAP7_20MHZ_STA_RX_NDP_WIDER_BW |
3206 IEEE80211_EHT_PHY_CAP7_NON_OFDMA_UL_MU_MIMO_80MHZ |
3207 IEEE80211_EHT_PHY_CAP7_NON_OFDMA_UL_MU_MIMO_160MHZ |
3208 IEEE80211_EHT_PHY_CAP7_MU_BEAMFORMER_80MHZ |
3209 IEEE80211_EHT_PHY_CAP7_MU_BEAMFORMER_160MHZ,
3210 },
3211
3212 /* For all MCS and bandwidth, set 8 NSS for both Tx and
3213 * Rx
3214 */
3215 .eht_mcs_nss_supp = {
3216 /*
3217 * As B1 and B2 are set in the supported
3218 * channel width set field in the HE PHY
3219 * capabilities information field include all
3220 * the following MCS/NSS.
3221 */
3222 .bw._80 = {
3223 .rx_tx_mcs9_max_nss = 0x88,
3224 .rx_tx_mcs11_max_nss = 0x88,
3225 .rx_tx_mcs13_max_nss = 0x88,
3226 },
3227 .bw._160 = {
3228 .rx_tx_mcs9_max_nss = 0x88,
3229 .rx_tx_mcs11_max_nss = 0x88,
3230 .rx_tx_mcs13_max_nss = 0x88,
3231 },
3232 },
3233 /* PPE threshold information is not supported */
3234 },
3235 },
3236 #ifdef CONFIG_MAC80211_MESH
3237 {
3238 /* TODO: should we support other types, e.g., IBSS?*/
3239 .types_mask = BIT(NL80211_IFTYPE_MESH_POINT),
3240 .he_cap = {
3241 .has_he = true,
3242 .he_cap_elem = {
3243 .mac_cap_info[0] =
3244 IEEE80211_HE_MAC_CAP0_HTC_HE,
3245 .mac_cap_info[1] =
3246 IEEE80211_HE_MAC_CAP1_MULTI_TID_AGG_RX_QOS_8,
3247 .mac_cap_info[2] =
3248 IEEE80211_HE_MAC_CAP2_ACK_EN,
3249 .mac_cap_info[3] =
3250 IEEE80211_HE_MAC_CAP3_OMI_CONTROL |
3251 IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_EXT_3,
3252 .mac_cap_info[4] = IEEE80211_HE_MAC_CAP4_AMSDU_IN_AMPDU,
3253 .phy_cap_info[0] =
3254 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G |
3255 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G |
3256 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G,
3257 .phy_cap_info[1] =
3258 IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK |
3259 IEEE80211_HE_PHY_CAP1_DEVICE_CLASS_A |
3260 IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD |
3261 IEEE80211_HE_PHY_CAP1_MIDAMBLE_RX_TX_MAX_NSTS,
3262 .phy_cap_info[2] = 0,
3263
3264 /* Leave all the other PHY capability bytes
3265 * unset, as DCM, beam forming, RU and PPE
3266 * threshold information are not supported
3267 */
3268 },
3269 .he_mcs_nss_supp = {
3270 .rx_mcs_80 = cpu_to_le16(0xfffa),
3271 .tx_mcs_80 = cpu_to_le16(0xfffa),
3272 .rx_mcs_160 = cpu_to_le16(0xfffa),
3273 .tx_mcs_160 = cpu_to_le16(0xfffa),
3274 .rx_mcs_80p80 = cpu_to_le16(0xfffa),
3275 .tx_mcs_80p80 = cpu_to_le16(0xfffa),
3276 },
3277 },
3278 },
3279 #endif
3280 };
3281
3282 static const struct ieee80211_sband_iftype_data sband_capa_6ghz[] = {
3283 {
3284 /* TODO: should we support other types, e.g., P2P?*/
3285 .types_mask = BIT(NL80211_IFTYPE_STATION) |
3286 BIT(NL80211_IFTYPE_AP),
3287 .he_6ghz_capa = {
3288 .capa = cpu_to_le16(IEEE80211_HE_6GHZ_CAP_MIN_MPDU_START |
3289 IEEE80211_HE_6GHZ_CAP_MAX_AMPDU_LEN_EXP |
3290 IEEE80211_HE_6GHZ_CAP_MAX_MPDU_LEN |
3291 IEEE80211_HE_6GHZ_CAP_SM_PS |
3292 IEEE80211_HE_6GHZ_CAP_RD_RESPONDER |
3293 IEEE80211_HE_6GHZ_CAP_TX_ANTPAT_CONS |
3294 IEEE80211_HE_6GHZ_CAP_RX_ANTPAT_CONS),
3295 },
3296 .he_cap = {
3297 .has_he = true,
3298 .he_cap_elem = {
3299 .mac_cap_info[0] =
3300 IEEE80211_HE_MAC_CAP0_HTC_HE,
3301 .mac_cap_info[1] =
3302 IEEE80211_HE_MAC_CAP1_TF_MAC_PAD_DUR_16US |
3303 IEEE80211_HE_MAC_CAP1_MULTI_TID_AGG_RX_QOS_8,
3304 .mac_cap_info[2] =
3305 IEEE80211_HE_MAC_CAP2_BSR |
3306 IEEE80211_HE_MAC_CAP2_MU_CASCADING |
3307 IEEE80211_HE_MAC_CAP2_ACK_EN,
3308 .mac_cap_info[3] =
3309 IEEE80211_HE_MAC_CAP3_OMI_CONTROL |
3310 IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_EXT_3,
3311 .mac_cap_info[4] = IEEE80211_HE_MAC_CAP4_AMSDU_IN_AMPDU,
3312 .phy_cap_info[0] =
3313 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G |
3314 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G |
3315 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G,
3316 .phy_cap_info[1] =
3317 IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK |
3318 IEEE80211_HE_PHY_CAP1_DEVICE_CLASS_A |
3319 IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD |
3320 IEEE80211_HE_PHY_CAP1_MIDAMBLE_RX_TX_MAX_NSTS,
3321 .phy_cap_info[2] =
3322 IEEE80211_HE_PHY_CAP2_NDP_4x_LTF_AND_3_2US |
3323 IEEE80211_HE_PHY_CAP2_STBC_TX_UNDER_80MHZ |
3324 IEEE80211_HE_PHY_CAP2_STBC_RX_UNDER_80MHZ |
3325 IEEE80211_HE_PHY_CAP2_UL_MU_FULL_MU_MIMO |
3326 IEEE80211_HE_PHY_CAP2_UL_MU_PARTIAL_MU_MIMO,
3327
3328 /* Leave all the other PHY capability bytes
3329 * unset, as DCM, beam forming, RU and PPE
3330 * threshold information are not supported
3331 */
3332 },
3333 .he_mcs_nss_supp = {
3334 .rx_mcs_80 = cpu_to_le16(0xfffa),
3335 .tx_mcs_80 = cpu_to_le16(0xfffa),
3336 .rx_mcs_160 = cpu_to_le16(0xfffa),
3337 .tx_mcs_160 = cpu_to_le16(0xfffa),
3338 .rx_mcs_80p80 = cpu_to_le16(0xfffa),
3339 .tx_mcs_80p80 = cpu_to_le16(0xfffa),
3340 },
3341 },
3342 .eht_cap = {
3343 .has_eht = true,
3344 .eht_cap_elem = {
3345 .mac_cap_info[0] =
3346 IEEE80211_EHT_MAC_CAP0_NSEP_PRIO_ACCESS |
3347 IEEE80211_EHT_MAC_CAP0_OM_CONTROL |
3348 IEEE80211_EHT_MAC_CAP0_TRIG_TXOP_SHARING_MODE1,
3349 .phy_cap_info[0] =
3350 IEEE80211_EHT_PHY_CAP0_320MHZ_IN_6GHZ |
3351 IEEE80211_EHT_PHY_CAP0_242_TONE_RU_GT20MHZ |
3352 IEEE80211_EHT_PHY_CAP0_NDP_4_EHT_LFT_32_GI |
3353 IEEE80211_EHT_PHY_CAP0_PARTIAL_BW_UL_MU_MIMO |
3354 IEEE80211_EHT_PHY_CAP0_SU_BEAMFORMER |
3355 IEEE80211_EHT_PHY_CAP0_SU_BEAMFORMEE |
3356 IEEE80211_EHT_PHY_CAP0_BEAMFORMEE_SS_80MHZ_MASK,
3357 .phy_cap_info[1] =
3358 IEEE80211_EHT_PHY_CAP1_BEAMFORMEE_SS_80MHZ_MASK |
3359 IEEE80211_EHT_PHY_CAP1_BEAMFORMEE_SS_160MHZ_MASK |
3360 IEEE80211_EHT_PHY_CAP1_BEAMFORMEE_SS_320MHZ_MASK,
3361 .phy_cap_info[2] =
3362 IEEE80211_EHT_PHY_CAP2_SOUNDING_DIM_80MHZ_MASK |
3363 IEEE80211_EHT_PHY_CAP2_SOUNDING_DIM_160MHZ_MASK |
3364 IEEE80211_EHT_PHY_CAP2_SOUNDING_DIM_320MHZ_MASK,
3365 .phy_cap_info[3] =
3366 IEEE80211_EHT_PHY_CAP3_NG_16_SU_FEEDBACK |
3367 IEEE80211_EHT_PHY_CAP3_NG_16_MU_FEEDBACK |
3368 IEEE80211_EHT_PHY_CAP3_CODEBOOK_4_2_SU_FDBK |
3369 IEEE80211_EHT_PHY_CAP3_CODEBOOK_7_5_MU_FDBK |
3370 IEEE80211_EHT_PHY_CAP3_TRIG_SU_BF_FDBK |
3371 IEEE80211_EHT_PHY_CAP3_TRIG_MU_BF_PART_BW_FDBK |
3372 IEEE80211_EHT_PHY_CAP3_TRIG_CQI_FDBK,
3373 .phy_cap_info[4] =
3374 IEEE80211_EHT_PHY_CAP4_PART_BW_DL_MU_MIMO |
3375 IEEE80211_EHT_PHY_CAP4_PSR_SR_SUPP |
3376 IEEE80211_EHT_PHY_CAP4_POWER_BOOST_FACT_SUPP |
3377 IEEE80211_EHT_PHY_CAP4_EHT_MU_PPDU_4_EHT_LTF_08_GI |
3378 IEEE80211_EHT_PHY_CAP4_MAX_NC_MASK,
3379 .phy_cap_info[5] =
3380 IEEE80211_EHT_PHY_CAP5_NON_TRIG_CQI_FEEDBACK |
3381 IEEE80211_EHT_PHY_CAP5_TX_LESS_242_TONE_RU_SUPP |
3382 IEEE80211_EHT_PHY_CAP5_RX_LESS_242_TONE_RU_SUPP |
3383 IEEE80211_EHT_PHY_CAP5_PPE_THRESHOLD_PRESENT |
3384 IEEE80211_EHT_PHY_CAP5_COMMON_NOMINAL_PKT_PAD_MASK |
3385 IEEE80211_EHT_PHY_CAP5_MAX_NUM_SUPP_EHT_LTF_MASK,
3386 .phy_cap_info[6] =
3387 IEEE80211_EHT_PHY_CAP6_MAX_NUM_SUPP_EHT_LTF_MASK |
3388 IEEE80211_EHT_PHY_CAP6_MCS15_SUPP_MASK |
3389 IEEE80211_EHT_PHY_CAP6_EHT_DUP_6GHZ_SUPP,
3390 .phy_cap_info[7] =
3391 IEEE80211_EHT_PHY_CAP7_20MHZ_STA_RX_NDP_WIDER_BW |
3392 IEEE80211_EHT_PHY_CAP7_NON_OFDMA_UL_MU_MIMO_80MHZ |
3393 IEEE80211_EHT_PHY_CAP7_NON_OFDMA_UL_MU_MIMO_160MHZ |
3394 IEEE80211_EHT_PHY_CAP7_NON_OFDMA_UL_MU_MIMO_320MHZ |
3395 IEEE80211_EHT_PHY_CAP7_MU_BEAMFORMER_80MHZ |
3396 IEEE80211_EHT_PHY_CAP7_MU_BEAMFORMER_160MHZ |
3397 IEEE80211_EHT_PHY_CAP7_MU_BEAMFORMER_320MHZ,
3398 },
3399
3400 /* For all MCS and bandwidth, set 8 NSS for both Tx and
3401 * Rx
3402 */
3403 .eht_mcs_nss_supp = {
3404 /*
3405 * As B1 and B2 are set in the supported
3406 * channel width set field in the HE PHY
3407 * capabilities information field and 320MHz in
3408 * 6GHz is supported include all the following
3409 * MCS/NSS.
3410 */
3411 .bw._80 = {
3412 .rx_tx_mcs9_max_nss = 0x88,
3413 .rx_tx_mcs11_max_nss = 0x88,
3414 .rx_tx_mcs13_max_nss = 0x88,
3415 },
3416 .bw._160 = {
3417 .rx_tx_mcs9_max_nss = 0x88,
3418 .rx_tx_mcs11_max_nss = 0x88,
3419 .rx_tx_mcs13_max_nss = 0x88,
3420 },
3421 .bw._320 = {
3422 .rx_tx_mcs9_max_nss = 0x88,
3423 .rx_tx_mcs11_max_nss = 0x88,
3424 .rx_tx_mcs13_max_nss = 0x88,
3425 },
3426 },
3427 /* PPE threshold information is not supported */
3428 },
3429 },
3430 #ifdef CONFIG_MAC80211_MESH
3431 {
3432 /* TODO: should we support other types, e.g., IBSS?*/
3433 .types_mask = BIT(NL80211_IFTYPE_MESH_POINT),
3434 .he_6ghz_capa = {
3435 .capa = cpu_to_le16(IEEE80211_HE_6GHZ_CAP_MIN_MPDU_START |
3436 IEEE80211_HE_6GHZ_CAP_MAX_AMPDU_LEN_EXP |
3437 IEEE80211_HE_6GHZ_CAP_MAX_MPDU_LEN |
3438 IEEE80211_HE_6GHZ_CAP_SM_PS |
3439 IEEE80211_HE_6GHZ_CAP_RD_RESPONDER |
3440 IEEE80211_HE_6GHZ_CAP_TX_ANTPAT_CONS |
3441 IEEE80211_HE_6GHZ_CAP_RX_ANTPAT_CONS),
3442 },
3443 .he_cap = {
3444 .has_he = true,
3445 .he_cap_elem = {
3446 .mac_cap_info[0] =
3447 IEEE80211_HE_MAC_CAP0_HTC_HE,
3448 .mac_cap_info[1] =
3449 IEEE80211_HE_MAC_CAP1_MULTI_TID_AGG_RX_QOS_8,
3450 .mac_cap_info[2] =
3451 IEEE80211_HE_MAC_CAP2_ACK_EN,
3452 .mac_cap_info[3] =
3453 IEEE80211_HE_MAC_CAP3_OMI_CONTROL |
3454 IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_EXT_3,
3455 .mac_cap_info[4] = IEEE80211_HE_MAC_CAP4_AMSDU_IN_AMPDU,
3456 .phy_cap_info[0] =
3457 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G |
3458 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G |
3459 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G,
3460 .phy_cap_info[1] =
3461 IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK |
3462 IEEE80211_HE_PHY_CAP1_DEVICE_CLASS_A |
3463 IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD |
3464 IEEE80211_HE_PHY_CAP1_MIDAMBLE_RX_TX_MAX_NSTS,
3465 .phy_cap_info[2] = 0,
3466
3467 /* Leave all the other PHY capability bytes
3468 * unset, as DCM, beam forming, RU and PPE
3469 * threshold information are not supported
3470 */
3471 },
3472 .he_mcs_nss_supp = {
3473 .rx_mcs_80 = cpu_to_le16(0xfffa),
3474 .tx_mcs_80 = cpu_to_le16(0xfffa),
3475 .rx_mcs_160 = cpu_to_le16(0xfffa),
3476 .tx_mcs_160 = cpu_to_le16(0xfffa),
3477 .rx_mcs_80p80 = cpu_to_le16(0xfffa),
3478 .tx_mcs_80p80 = cpu_to_le16(0xfffa),
3479 },
3480 },
3481 },
3482 #endif
3483 };
3484
mac80211_hwsim_sband_capab(struct ieee80211_supported_band * sband)3485 static void mac80211_hwsim_sband_capab(struct ieee80211_supported_band *sband)
3486 {
3487 u16 n_iftype_data;
3488
3489 if (sband->band == NL80211_BAND_2GHZ) {
3490 n_iftype_data = ARRAY_SIZE(sband_capa_2ghz);
3491 sband->iftype_data =
3492 (struct ieee80211_sband_iftype_data *)sband_capa_2ghz;
3493 } else if (sband->band == NL80211_BAND_5GHZ) {
3494 n_iftype_data = ARRAY_SIZE(sband_capa_5ghz);
3495 sband->iftype_data =
3496 (struct ieee80211_sband_iftype_data *)sband_capa_5ghz;
3497 } else if (sband->band == NL80211_BAND_6GHZ) {
3498 n_iftype_data = ARRAY_SIZE(sband_capa_6ghz);
3499 sband->iftype_data =
3500 (struct ieee80211_sband_iftype_data *)sband_capa_6ghz;
3501 } else {
3502 return;
3503 }
3504
3505 sband->n_iftype_data = n_iftype_data;
3506 }
3507
3508 #ifdef CONFIG_MAC80211_MESH
3509 #define HWSIM_MESH_BIT BIT(NL80211_IFTYPE_MESH_POINT)
3510 #else
3511 #define HWSIM_MESH_BIT 0
3512 #endif
3513
3514 #define HWSIM_DEFAULT_IF_LIMIT \
3515 (BIT(NL80211_IFTYPE_STATION) | \
3516 BIT(NL80211_IFTYPE_P2P_CLIENT) | \
3517 BIT(NL80211_IFTYPE_AP) | \
3518 BIT(NL80211_IFTYPE_P2P_GO) | \
3519 HWSIM_MESH_BIT)
3520
3521 #define HWSIM_IFTYPE_SUPPORT_MASK \
3522 (BIT(NL80211_IFTYPE_STATION) | \
3523 BIT(NL80211_IFTYPE_AP) | \
3524 BIT(NL80211_IFTYPE_P2P_CLIENT) | \
3525 BIT(NL80211_IFTYPE_P2P_GO) | \
3526 BIT(NL80211_IFTYPE_ADHOC) | \
3527 BIT(NL80211_IFTYPE_MESH_POINT) | \
3528 BIT(NL80211_IFTYPE_OCB))
3529
mac80211_hwsim_new_radio(struct genl_info * info,struct hwsim_new_radio_params * param)3530 static int mac80211_hwsim_new_radio(struct genl_info *info,
3531 struct hwsim_new_radio_params *param)
3532 {
3533 int err;
3534 u8 addr[ETH_ALEN];
3535 struct mac80211_hwsim_data *data;
3536 struct ieee80211_hw *hw;
3537 enum nl80211_band band;
3538 const struct ieee80211_ops *ops = &mac80211_hwsim_ops;
3539 struct net *net;
3540 int idx, i;
3541 int n_limits = 0;
3542
3543 if (WARN_ON(param->channels > 1 && !param->use_chanctx))
3544 return -EINVAL;
3545
3546 spin_lock_bh(&hwsim_radio_lock);
3547 idx = hwsim_radio_idx++;
3548 spin_unlock_bh(&hwsim_radio_lock);
3549
3550 if (param->use_chanctx)
3551 ops = &mac80211_hwsim_mchan_ops;
3552 hw = ieee80211_alloc_hw_nm(sizeof(*data), ops, param->hwname);
3553 if (!hw) {
3554 pr_debug("mac80211_hwsim: ieee80211_alloc_hw failed\n");
3555 err = -ENOMEM;
3556 goto failed;
3557 }
3558
3559 /* ieee80211_alloc_hw_nm may have used a default name */
3560 param->hwname = wiphy_name(hw->wiphy);
3561
3562 if (info)
3563 net = genl_info_net(info);
3564 else
3565 net = &init_net;
3566 wiphy_net_set(hw->wiphy, net);
3567
3568 data = hw->priv;
3569 data->hw = hw;
3570
3571 data->dev = device_create(hwsim_class, NULL, 0, hw, "hwsim%d", idx);
3572 if (IS_ERR(data->dev)) {
3573 printk(KERN_DEBUG
3574 "mac80211_hwsim: device_create failed (%ld)\n",
3575 PTR_ERR(data->dev));
3576 err = -ENOMEM;
3577 goto failed_drvdata;
3578 }
3579 data->dev->driver = &mac80211_hwsim_driver.driver;
3580 err = device_bind_driver(data->dev);
3581 if (err != 0) {
3582 pr_debug("mac80211_hwsim: device_bind_driver failed (%d)\n",
3583 err);
3584 goto failed_bind;
3585 }
3586
3587 skb_queue_head_init(&data->pending);
3588
3589 SET_IEEE80211_DEV(hw, data->dev);
3590 if (!param->perm_addr) {
3591 eth_zero_addr(addr);
3592 addr[0] = 0x02;
3593 addr[3] = idx >> 8;
3594 addr[4] = idx;
3595 memcpy(data->addresses[0].addr, addr, ETH_ALEN);
3596 /* Why need here second address ? */
3597 memcpy(data->addresses[1].addr, addr, ETH_ALEN);
3598 data->addresses[1].addr[0] |= 0x40;
3599 hw->wiphy->n_addresses = 2;
3600 hw->wiphy->addresses = data->addresses;
3601 /* possible address clash is checked at hash table insertion */
3602 } else {
3603 memcpy(data->addresses[0].addr, param->perm_addr, ETH_ALEN);
3604 /* compatibility with automatically generated mac addr */
3605 memcpy(data->addresses[1].addr, param->perm_addr, ETH_ALEN);
3606 hw->wiphy->n_addresses = 2;
3607 hw->wiphy->addresses = data->addresses;
3608 }
3609
3610 data->channels = param->channels;
3611 data->use_chanctx = param->use_chanctx;
3612 data->idx = idx;
3613 data->destroy_on_close = param->destroy_on_close;
3614 if (info)
3615 data->portid = info->snd_portid;
3616
3617 /* setup interface limits, only on interface types we support */
3618 if (param->iftypes & BIT(NL80211_IFTYPE_ADHOC)) {
3619 data->if_limits[n_limits].max = 1;
3620 data->if_limits[n_limits].types = BIT(NL80211_IFTYPE_ADHOC);
3621 n_limits++;
3622 }
3623
3624 if (param->iftypes & HWSIM_DEFAULT_IF_LIMIT) {
3625 data->if_limits[n_limits].max = 2048;
3626 /*
3627 * For this case, we may only support a subset of
3628 * HWSIM_DEFAULT_IF_LIMIT, therefore we only want to add the
3629 * bits that both param->iftype & HWSIM_DEFAULT_IF_LIMIT have.
3630 */
3631 data->if_limits[n_limits].types =
3632 HWSIM_DEFAULT_IF_LIMIT & param->iftypes;
3633 n_limits++;
3634 }
3635
3636 if (param->iftypes & BIT(NL80211_IFTYPE_P2P_DEVICE)) {
3637 data->if_limits[n_limits].max = 1;
3638 data->if_limits[n_limits].types =
3639 BIT(NL80211_IFTYPE_P2P_DEVICE);
3640 n_limits++;
3641 }
3642
3643 if (data->use_chanctx) {
3644 hw->wiphy->max_scan_ssids = 255;
3645 hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
3646 hw->wiphy->max_remain_on_channel_duration = 1000;
3647 data->if_combination.radar_detect_widths = 0;
3648 data->if_combination.num_different_channels = data->channels;
3649 data->chanctx = NULL;
3650 } else {
3651 data->if_combination.num_different_channels = 1;
3652 data->if_combination.radar_detect_widths =
3653 BIT(NL80211_CHAN_WIDTH_5) |
3654 BIT(NL80211_CHAN_WIDTH_10) |
3655 BIT(NL80211_CHAN_WIDTH_20_NOHT) |
3656 BIT(NL80211_CHAN_WIDTH_20) |
3657 BIT(NL80211_CHAN_WIDTH_40) |
3658 BIT(NL80211_CHAN_WIDTH_80) |
3659 BIT(NL80211_CHAN_WIDTH_160);
3660 }
3661
3662 if (!n_limits) {
3663 err = -EINVAL;
3664 goto failed_hw;
3665 }
3666
3667 data->if_combination.max_interfaces = 0;
3668 for (i = 0; i < n_limits; i++)
3669 data->if_combination.max_interfaces +=
3670 data->if_limits[i].max;
3671
3672 data->if_combination.n_limits = n_limits;
3673 data->if_combination.limits = data->if_limits;
3674
3675 /*
3676 * If we actually were asked to support combinations,
3677 * advertise them - if there's only a single thing like
3678 * only IBSS then don't advertise it as combinations.
3679 */
3680 if (data->if_combination.max_interfaces > 1) {
3681 hw->wiphy->iface_combinations = &data->if_combination;
3682 hw->wiphy->n_iface_combinations = 1;
3683 }
3684
3685 if (param->ciphers) {
3686 memcpy(data->ciphers, param->ciphers,
3687 param->n_ciphers * sizeof(u32));
3688 hw->wiphy->cipher_suites = data->ciphers;
3689 hw->wiphy->n_cipher_suites = param->n_ciphers;
3690 }
3691
3692 data->rx_rssi = DEFAULT_RX_RSSI;
3693
3694 INIT_DELAYED_WORK(&data->roc_start, hw_roc_start);
3695 INIT_DELAYED_WORK(&data->roc_done, hw_roc_done);
3696 INIT_DELAYED_WORK(&data->hw_scan, hw_scan_work);
3697
3698 hw->queues = 5;
3699 hw->offchannel_tx_hw_queue = 4;
3700
3701 ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
3702 ieee80211_hw_set(hw, CHANCTX_STA_CSA);
3703 ieee80211_hw_set(hw, SUPPORTS_HT_CCK_RATES);
3704 ieee80211_hw_set(hw, QUEUE_CONTROL);
3705 ieee80211_hw_set(hw, WANT_MONITOR_VIF);
3706 ieee80211_hw_set(hw, AMPDU_AGGREGATION);
3707 ieee80211_hw_set(hw, MFP_CAPABLE);
3708 ieee80211_hw_set(hw, SIGNAL_DBM);
3709 ieee80211_hw_set(hw, SUPPORTS_PS);
3710 ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS);
3711 ieee80211_hw_set(hw, HOST_BROADCAST_PS_BUFFERING);
3712 ieee80211_hw_set(hw, PS_NULLFUNC_STACK);
3713 ieee80211_hw_set(hw, TDLS_WIDER_BW);
3714 if (rctbl)
3715 ieee80211_hw_set(hw, SUPPORTS_RC_TABLE);
3716 ieee80211_hw_set(hw, SUPPORTS_MULTI_BSSID);
3717
3718 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
3719 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS |
3720 WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL |
3721 WIPHY_FLAG_AP_UAPSD |
3722 WIPHY_FLAG_SUPPORTS_5_10_MHZ |
3723 WIPHY_FLAG_HAS_CHANNEL_SWITCH;
3724 hw->wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR |
3725 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
3726 NL80211_FEATURE_STATIC_SMPS |
3727 NL80211_FEATURE_DYNAMIC_SMPS |
3728 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
3729 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_VHT_IBSS);
3730 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_BEACON_PROTECTION);
3731 wiphy_ext_feature_set(hw->wiphy,
3732 NL80211_EXT_FEATURE_MULTICAST_REGISTRATIONS);
3733 wiphy_ext_feature_set(hw->wiphy,
3734 NL80211_EXT_FEATURE_BEACON_RATE_LEGACY);
3735
3736 hw->wiphy->interface_modes = param->iftypes;
3737
3738 /* ask mac80211 to reserve space for magic */
3739 hw->vif_data_size = sizeof(struct hwsim_vif_priv);
3740 hw->sta_data_size = sizeof(struct hwsim_sta_priv);
3741 hw->chanctx_data_size = sizeof(struct hwsim_chanctx_priv);
3742
3743 memcpy(data->channels_2ghz, hwsim_channels_2ghz,
3744 sizeof(hwsim_channels_2ghz));
3745 memcpy(data->channels_5ghz, hwsim_channels_5ghz,
3746 sizeof(hwsim_channels_5ghz));
3747 memcpy(data->channels_6ghz, hwsim_channels_6ghz,
3748 sizeof(hwsim_channels_6ghz));
3749 memcpy(data->channels_s1g, hwsim_channels_s1g,
3750 sizeof(hwsim_channels_s1g));
3751 memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
3752
3753 for (band = NL80211_BAND_2GHZ; band < NUM_NL80211_BANDS; band++) {
3754 struct ieee80211_supported_band *sband = &data->bands[band];
3755
3756 sband->band = band;
3757
3758 switch (band) {
3759 case NL80211_BAND_2GHZ:
3760 sband->channels = data->channels_2ghz;
3761 sband->n_channels = ARRAY_SIZE(hwsim_channels_2ghz);
3762 sband->bitrates = data->rates;
3763 sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
3764 break;
3765 case NL80211_BAND_5GHZ:
3766 sband->channels = data->channels_5ghz;
3767 sband->n_channels = ARRAY_SIZE(hwsim_channels_5ghz);
3768 sband->bitrates = data->rates + 4;
3769 sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
3770
3771 sband->vht_cap.vht_supported = true;
3772 sband->vht_cap.cap =
3773 IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 |
3774 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ |
3775 IEEE80211_VHT_CAP_RXLDPC |
3776 IEEE80211_VHT_CAP_SHORT_GI_80 |
3777 IEEE80211_VHT_CAP_SHORT_GI_160 |
3778 IEEE80211_VHT_CAP_TXSTBC |
3779 IEEE80211_VHT_CAP_RXSTBC_4 |
3780 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
3781 sband->vht_cap.vht_mcs.rx_mcs_map =
3782 cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_9 << 0 |
3783 IEEE80211_VHT_MCS_SUPPORT_0_9 << 2 |
3784 IEEE80211_VHT_MCS_SUPPORT_0_9 << 4 |
3785 IEEE80211_VHT_MCS_SUPPORT_0_9 << 6 |
3786 IEEE80211_VHT_MCS_SUPPORT_0_9 << 8 |
3787 IEEE80211_VHT_MCS_SUPPORT_0_9 << 10 |
3788 IEEE80211_VHT_MCS_SUPPORT_0_9 << 12 |
3789 IEEE80211_VHT_MCS_SUPPORT_0_9 << 14);
3790 sband->vht_cap.vht_mcs.tx_mcs_map =
3791 sband->vht_cap.vht_mcs.rx_mcs_map;
3792 break;
3793 case NL80211_BAND_6GHZ:
3794 sband->channels = data->channels_6ghz;
3795 sband->n_channels = ARRAY_SIZE(hwsim_channels_6ghz);
3796 sband->bitrates = data->rates + 4;
3797 sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
3798 break;
3799 case NL80211_BAND_S1GHZ:
3800 memcpy(&sband->s1g_cap, &hwsim_s1g_cap,
3801 sizeof(sband->s1g_cap));
3802 sband->channels = data->channels_s1g;
3803 sband->n_channels = ARRAY_SIZE(hwsim_channels_s1g);
3804 break;
3805 default:
3806 continue;
3807 }
3808
3809 if (band != NL80211_BAND_6GHZ){
3810 sband->ht_cap.ht_supported = true;
3811 sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
3812 IEEE80211_HT_CAP_GRN_FLD |
3813 IEEE80211_HT_CAP_SGI_20 |
3814 IEEE80211_HT_CAP_SGI_40 |
3815 IEEE80211_HT_CAP_DSSSCCK40;
3816 sband->ht_cap.ampdu_factor = 0x3;
3817 sband->ht_cap.ampdu_density = 0x6;
3818 memset(&sband->ht_cap.mcs, 0,
3819 sizeof(sband->ht_cap.mcs));
3820 sband->ht_cap.mcs.rx_mask[0] = 0xff;
3821 sband->ht_cap.mcs.rx_mask[1] = 0xff;
3822 sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
3823 }
3824
3825 mac80211_hwsim_sband_capab(sband);
3826
3827 hw->wiphy->bands[band] = sband;
3828 }
3829
3830 /* By default all radios belong to the first group */
3831 data->group = 1;
3832 mutex_init(&data->mutex);
3833
3834 data->netgroup = hwsim_net_get_netgroup(net);
3835 data->wmediumd = hwsim_net_get_wmediumd(net);
3836
3837 /* Enable frame retransmissions for lossy channels */
3838 hw->max_rates = 4;
3839 hw->max_rate_tries = 11;
3840
3841 hw->wiphy->vendor_commands = mac80211_hwsim_vendor_commands;
3842 hw->wiphy->n_vendor_commands =
3843 ARRAY_SIZE(mac80211_hwsim_vendor_commands);
3844 hw->wiphy->vendor_events = mac80211_hwsim_vendor_events;
3845 hw->wiphy->n_vendor_events = ARRAY_SIZE(mac80211_hwsim_vendor_events);
3846
3847 if (param->reg_strict)
3848 hw->wiphy->regulatory_flags |= REGULATORY_STRICT_REG;
3849 if (param->regd) {
3850 data->regd = param->regd;
3851 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG;
3852 wiphy_apply_custom_regulatory(hw->wiphy, param->regd);
3853 /* give the regulatory workqueue a chance to run */
3854 schedule_timeout_interruptible(1);
3855 }
3856
3857 if (param->no_vif)
3858 ieee80211_hw_set(hw, NO_AUTO_VIF);
3859
3860 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST);
3861
3862 hrtimer_init(&data->beacon_timer, CLOCK_MONOTONIC,
3863 HRTIMER_MODE_ABS_SOFT);
3864 data->beacon_timer.function = mac80211_hwsim_beacon;
3865
3866 err = ieee80211_register_hw(hw);
3867 if (err < 0) {
3868 pr_debug("mac80211_hwsim: ieee80211_register_hw failed (%d)\n",
3869 err);
3870 goto failed_hw;
3871 }
3872
3873 wiphy_dbg(hw->wiphy, "hwaddr %pM registered\n", hw->wiphy->perm_addr);
3874
3875 if (param->reg_alpha2) {
3876 data->alpha2[0] = param->reg_alpha2[0];
3877 data->alpha2[1] = param->reg_alpha2[1];
3878 regulatory_hint(hw->wiphy, param->reg_alpha2);
3879 }
3880
3881 data->debugfs = debugfs_create_dir("hwsim", hw->wiphy->debugfsdir);
3882 debugfs_create_file("ps", 0666, data->debugfs, data, &hwsim_fops_ps);
3883 debugfs_create_file("group", 0666, data->debugfs, data,
3884 &hwsim_fops_group);
3885 debugfs_create_file("rx_rssi", 0666, data->debugfs, data,
3886 &hwsim_fops_rx_rssi);
3887 if (!data->use_chanctx)
3888 debugfs_create_file("dfs_simulate_radar", 0222,
3889 data->debugfs,
3890 data, &hwsim_simulate_radar);
3891
3892 spin_lock_bh(&hwsim_radio_lock);
3893 err = rhashtable_insert_fast(&hwsim_radios_rht, &data->rht,
3894 hwsim_rht_params);
3895 if (err < 0) {
3896 if (info) {
3897 GENL_SET_ERR_MSG(info, "perm addr already present");
3898 NL_SET_BAD_ATTR(info->extack,
3899 info->attrs[HWSIM_ATTR_PERM_ADDR]);
3900 }
3901 spin_unlock_bh(&hwsim_radio_lock);
3902 goto failed_final_insert;
3903 }
3904
3905 list_add_tail(&data->list, &hwsim_radios);
3906 hwsim_radios_generation++;
3907 spin_unlock_bh(&hwsim_radio_lock);
3908
3909 hwsim_mcast_new_radio(idx, info, param);
3910
3911 return idx;
3912
3913 failed_final_insert:
3914 debugfs_remove_recursive(data->debugfs);
3915 ieee80211_unregister_hw(data->hw);
3916 failed_hw:
3917 device_release_driver(data->dev);
3918 failed_bind:
3919 device_unregister(data->dev);
3920 failed_drvdata:
3921 ieee80211_free_hw(hw);
3922 failed:
3923 return err;
3924 }
3925
hwsim_mcast_del_radio(int id,const char * hwname,struct genl_info * info)3926 static void hwsim_mcast_del_radio(int id, const char *hwname,
3927 struct genl_info *info)
3928 {
3929 struct sk_buff *skb;
3930 void *data;
3931 int ret;
3932
3933 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
3934 if (!skb)
3935 return;
3936
3937 data = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
3938 HWSIM_CMD_DEL_RADIO);
3939 if (!data)
3940 goto error;
3941
3942 ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
3943 if (ret < 0)
3944 goto error;
3945
3946 ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME, strlen(hwname),
3947 hwname);
3948 if (ret < 0)
3949 goto error;
3950
3951 genlmsg_end(skb, data);
3952
3953 hwsim_mcast_config_msg(skb, info);
3954
3955 return;
3956
3957 error:
3958 nlmsg_free(skb);
3959 }
3960
mac80211_hwsim_del_radio(struct mac80211_hwsim_data * data,const char * hwname,struct genl_info * info)3961 static void mac80211_hwsim_del_radio(struct mac80211_hwsim_data *data,
3962 const char *hwname,
3963 struct genl_info *info)
3964 {
3965 hwsim_mcast_del_radio(data->idx, hwname, info);
3966 debugfs_remove_recursive(data->debugfs);
3967 ieee80211_unregister_hw(data->hw);
3968 device_release_driver(data->dev);
3969 device_unregister(data->dev);
3970 ieee80211_free_hw(data->hw);
3971 }
3972
mac80211_hwsim_get_radio(struct sk_buff * skb,struct mac80211_hwsim_data * data,u32 portid,u32 seq,struct netlink_callback * cb,int flags)3973 static int mac80211_hwsim_get_radio(struct sk_buff *skb,
3974 struct mac80211_hwsim_data *data,
3975 u32 portid, u32 seq,
3976 struct netlink_callback *cb, int flags)
3977 {
3978 void *hdr;
3979 struct hwsim_new_radio_params param = { };
3980 int res = -EMSGSIZE;
3981
3982 hdr = genlmsg_put(skb, portid, seq, &hwsim_genl_family, flags,
3983 HWSIM_CMD_GET_RADIO);
3984 if (!hdr)
3985 return -EMSGSIZE;
3986
3987 if (cb)
3988 genl_dump_check_consistent(cb, hdr);
3989
3990 if (data->alpha2[0] && data->alpha2[1])
3991 param.reg_alpha2 = data->alpha2;
3992
3993 param.reg_strict = !!(data->hw->wiphy->regulatory_flags &
3994 REGULATORY_STRICT_REG);
3995 param.p2p_device = !!(data->hw->wiphy->interface_modes &
3996 BIT(NL80211_IFTYPE_P2P_DEVICE));
3997 param.use_chanctx = data->use_chanctx;
3998 param.regd = data->regd;
3999 param.channels = data->channels;
4000 param.hwname = wiphy_name(data->hw->wiphy);
4001
4002 res = append_radio_msg(skb, data->idx, ¶m);
4003 if (res < 0)
4004 goto out_err;
4005
4006 genlmsg_end(skb, hdr);
4007 return 0;
4008
4009 out_err:
4010 genlmsg_cancel(skb, hdr);
4011 return res;
4012 }
4013
mac80211_hwsim_free(void)4014 static void mac80211_hwsim_free(void)
4015 {
4016 struct mac80211_hwsim_data *data;
4017
4018 spin_lock_bh(&hwsim_radio_lock);
4019 while ((data = list_first_entry_or_null(&hwsim_radios,
4020 struct mac80211_hwsim_data,
4021 list))) {
4022 list_del(&data->list);
4023 spin_unlock_bh(&hwsim_radio_lock);
4024 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
4025 NULL);
4026 spin_lock_bh(&hwsim_radio_lock);
4027 }
4028 spin_unlock_bh(&hwsim_radio_lock);
4029 class_destroy(hwsim_class);
4030 }
4031
4032 static const struct net_device_ops hwsim_netdev_ops = {
4033 .ndo_start_xmit = hwsim_mon_xmit,
4034 .ndo_set_mac_address = eth_mac_addr,
4035 .ndo_validate_addr = eth_validate_addr,
4036 };
4037
hwsim_mon_setup(struct net_device * dev)4038 static void hwsim_mon_setup(struct net_device *dev)
4039 {
4040 u8 addr[ETH_ALEN];
4041
4042 dev->netdev_ops = &hwsim_netdev_ops;
4043 dev->needs_free_netdev = true;
4044 ether_setup(dev);
4045 dev->priv_flags |= IFF_NO_QUEUE;
4046 dev->type = ARPHRD_IEEE80211_RADIOTAP;
4047 eth_zero_addr(addr);
4048 addr[0] = 0x12;
4049 eth_hw_addr_set(dev, addr);
4050 }
4051
get_hwsim_data_ref_from_addr(const u8 * addr)4052 static struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(const u8 *addr)
4053 {
4054 return rhashtable_lookup_fast(&hwsim_radios_rht,
4055 addr,
4056 hwsim_rht_params);
4057 }
4058
hwsim_register_wmediumd(struct net * net,u32 portid)4059 static void hwsim_register_wmediumd(struct net *net, u32 portid)
4060 {
4061 struct mac80211_hwsim_data *data;
4062
4063 hwsim_net_set_wmediumd(net, portid);
4064
4065 spin_lock_bh(&hwsim_radio_lock);
4066 list_for_each_entry(data, &hwsim_radios, list) {
4067 if (data->netgroup == hwsim_net_get_netgroup(net))
4068 data->wmediumd = portid;
4069 }
4070 spin_unlock_bh(&hwsim_radio_lock);
4071 }
4072
hwsim_tx_info_frame_received_nl(struct sk_buff * skb_2,struct genl_info * info)4073 static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
4074 struct genl_info *info)
4075 {
4076
4077 struct ieee80211_hdr *hdr;
4078 struct mac80211_hwsim_data *data2;
4079 struct ieee80211_tx_info *txi;
4080 struct hwsim_tx_rate *tx_attempts;
4081 u64 ret_skb_cookie;
4082 struct sk_buff *skb, *tmp;
4083 const u8 *src;
4084 unsigned int hwsim_flags;
4085 int i;
4086 unsigned long flags;
4087 bool found = false;
4088
4089 if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
4090 !info->attrs[HWSIM_ATTR_FLAGS] ||
4091 !info->attrs[HWSIM_ATTR_COOKIE] ||
4092 !info->attrs[HWSIM_ATTR_SIGNAL] ||
4093 !info->attrs[HWSIM_ATTR_TX_INFO])
4094 goto out;
4095
4096 src = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
4097 hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
4098 ret_skb_cookie = nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
4099
4100 data2 = get_hwsim_data_ref_from_addr(src);
4101 if (!data2)
4102 goto out;
4103
4104 if (!hwsim_virtio_enabled) {
4105 if (hwsim_net_get_netgroup(genl_info_net(info)) !=
4106 data2->netgroup)
4107 goto out;
4108
4109 if (info->snd_portid != data2->wmediumd)
4110 goto out;
4111 }
4112
4113 /* look for the skb matching the cookie passed back from user */
4114 spin_lock_irqsave(&data2->pending.lock, flags);
4115 skb_queue_walk_safe(&data2->pending, skb, tmp) {
4116 uintptr_t skb_cookie;
4117
4118 txi = IEEE80211_SKB_CB(skb);
4119 skb_cookie = (uintptr_t)txi->rate_driver_data[0];
4120
4121 if (skb_cookie == ret_skb_cookie) {
4122 __skb_unlink(skb, &data2->pending);
4123 found = true;
4124 break;
4125 }
4126 }
4127 spin_unlock_irqrestore(&data2->pending.lock, flags);
4128
4129 /* not found */
4130 if (!found)
4131 goto out;
4132
4133 /* Tx info received because the frame was broadcasted on user space,
4134 so we get all the necessary info: tx attempts and skb control buff */
4135
4136 tx_attempts = (struct hwsim_tx_rate *)nla_data(
4137 info->attrs[HWSIM_ATTR_TX_INFO]);
4138
4139 /* now send back TX status */
4140 txi = IEEE80211_SKB_CB(skb);
4141
4142 ieee80211_tx_info_clear_status(txi);
4143
4144 for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
4145 txi->status.rates[i].idx = tx_attempts[i].idx;
4146 txi->status.rates[i].count = tx_attempts[i].count;
4147 }
4148
4149 txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
4150
4151 if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
4152 (hwsim_flags & HWSIM_TX_STAT_ACK)) {
4153 if (skb->len >= 16) {
4154 hdr = (struct ieee80211_hdr *) skb->data;
4155 mac80211_hwsim_monitor_ack(data2->channel,
4156 hdr->addr2);
4157 }
4158 txi->flags |= IEEE80211_TX_STAT_ACK;
4159 }
4160
4161 if (hwsim_flags & HWSIM_TX_CTL_NO_ACK)
4162 txi->flags |= IEEE80211_TX_STAT_NOACK_TRANSMITTED;
4163
4164 ieee80211_tx_status_irqsafe(data2->hw, skb);
4165 return 0;
4166 out:
4167 return -EINVAL;
4168
4169 }
4170
hwsim_cloned_frame_received_nl(struct sk_buff * skb_2,struct genl_info * info)4171 static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
4172 struct genl_info *info)
4173 {
4174 struct mac80211_hwsim_data *data2;
4175 struct ieee80211_rx_status rx_status;
4176 struct ieee80211_hdr *hdr;
4177 const u8 *dst;
4178 int frame_data_len;
4179 void *frame_data;
4180 struct sk_buff *skb = NULL;
4181 struct ieee80211_channel *channel = NULL;
4182
4183 if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
4184 !info->attrs[HWSIM_ATTR_FRAME] ||
4185 !info->attrs[HWSIM_ATTR_RX_RATE] ||
4186 !info->attrs[HWSIM_ATTR_SIGNAL])
4187 goto out;
4188
4189 dst = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
4190 frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
4191 frame_data = (void *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
4192
4193 /* Allocate new skb here */
4194 skb = alloc_skb(frame_data_len, GFP_KERNEL);
4195 if (skb == NULL)
4196 goto err;
4197
4198 if (frame_data_len > IEEE80211_MAX_DATA_LEN)
4199 goto err;
4200
4201 /* Copy the data */
4202 skb_put_data(skb, frame_data, frame_data_len);
4203
4204 data2 = get_hwsim_data_ref_from_addr(dst);
4205 if (!data2)
4206 goto out;
4207
4208 if (data2->use_chanctx) {
4209 if (data2->tmp_chan)
4210 channel = data2->tmp_chan;
4211 else if (data2->chanctx)
4212 channel = data2->chanctx->def.chan;
4213 } else {
4214 channel = data2->channel;
4215 }
4216 if (!channel)
4217 goto out;
4218
4219 if (!hwsim_virtio_enabled) {
4220 if (hwsim_net_get_netgroup(genl_info_net(info)) !=
4221 data2->netgroup)
4222 goto out;
4223
4224 if (info->snd_portid != data2->wmediumd)
4225 goto out;
4226 }
4227
4228 /* check if radio is configured properly */
4229
4230 if ((data2->idle && !data2->tmp_chan) || !data2->started)
4231 goto out;
4232
4233 /* A frame is received from user space */
4234 memset(&rx_status, 0, sizeof(rx_status));
4235 if (info->attrs[HWSIM_ATTR_FREQ]) {
4236 /* throw away off-channel packets, but allow both the temporary
4237 * ("hw" scan/remain-on-channel) and regular channel, since the
4238 * internal datapath also allows this
4239 */
4240 mutex_lock(&data2->mutex);
4241 rx_status.freq = nla_get_u32(info->attrs[HWSIM_ATTR_FREQ]);
4242
4243 if (rx_status.freq != channel->center_freq) {
4244 mutex_unlock(&data2->mutex);
4245 goto out;
4246 }
4247 mutex_unlock(&data2->mutex);
4248 } else {
4249 rx_status.freq = channel->center_freq;
4250 }
4251
4252 rx_status.band = channel->band;
4253 rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
4254 rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
4255
4256 hdr = (void *)skb->data;
4257
4258 if (ieee80211_is_beacon(hdr->frame_control) ||
4259 ieee80211_is_probe_resp(hdr->frame_control))
4260 rx_status.boottime_ns = ktime_get_boottime_ns();
4261
4262 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
4263 data2->rx_pkts++;
4264 data2->rx_bytes += skb->len;
4265 ieee80211_rx_irqsafe(data2->hw, skb);
4266
4267 return 0;
4268 err:
4269 pr_debug("mac80211_hwsim: error occurred in %s\n", __func__);
4270 out:
4271 dev_kfree_skb(skb);
4272 return -EINVAL;
4273 }
4274
hwsim_register_received_nl(struct sk_buff * skb_2,struct genl_info * info)4275 static int hwsim_register_received_nl(struct sk_buff *skb_2,
4276 struct genl_info *info)
4277 {
4278 struct net *net = genl_info_net(info);
4279 struct mac80211_hwsim_data *data;
4280 int chans = 1;
4281
4282 spin_lock_bh(&hwsim_radio_lock);
4283 list_for_each_entry(data, &hwsim_radios, list)
4284 chans = max(chans, data->channels);
4285 spin_unlock_bh(&hwsim_radio_lock);
4286
4287 /* In the future we should revise the userspace API and allow it
4288 * to set a flag that it does support multi-channel, then we can
4289 * let this pass conditionally on the flag.
4290 * For current userspace, prohibit it since it won't work right.
4291 */
4292 if (chans > 1)
4293 return -EOPNOTSUPP;
4294
4295 if (hwsim_net_get_wmediumd(net))
4296 return -EBUSY;
4297
4298 hwsim_register_wmediumd(net, info->snd_portid);
4299
4300 pr_debug("mac80211_hwsim: received a REGISTER, "
4301 "switching to wmediumd mode with pid %d\n", info->snd_portid);
4302
4303 return 0;
4304 }
4305
4306 /* ensures ciphers only include ciphers listed in 'hwsim_ciphers' array */
hwsim_known_ciphers(const u32 * ciphers,int n_ciphers)4307 static bool hwsim_known_ciphers(const u32 *ciphers, int n_ciphers)
4308 {
4309 int i;
4310
4311 for (i = 0; i < n_ciphers; i++) {
4312 int j;
4313 int found = 0;
4314
4315 for (j = 0; j < ARRAY_SIZE(hwsim_ciphers); j++) {
4316 if (ciphers[i] == hwsim_ciphers[j]) {
4317 found = 1;
4318 break;
4319 }
4320 }
4321
4322 if (!found)
4323 return false;
4324 }
4325
4326 return true;
4327 }
4328
hwsim_new_radio_nl(struct sk_buff * msg,struct genl_info * info)4329 static int hwsim_new_radio_nl(struct sk_buff *msg, struct genl_info *info)
4330 {
4331 struct hwsim_new_radio_params param = { 0 };
4332 const char *hwname = NULL;
4333 int ret;
4334
4335 param.reg_strict = info->attrs[HWSIM_ATTR_REG_STRICT_REG];
4336 param.p2p_device = info->attrs[HWSIM_ATTR_SUPPORT_P2P_DEVICE];
4337 param.channels = channels;
4338 param.destroy_on_close =
4339 info->attrs[HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE];
4340
4341 if (info->attrs[HWSIM_ATTR_CHANNELS])
4342 param.channels = nla_get_u32(info->attrs[HWSIM_ATTR_CHANNELS]);
4343
4344 if (param.channels < 1) {
4345 GENL_SET_ERR_MSG(info, "must have at least one channel");
4346 return -EINVAL;
4347 }
4348
4349 if (info->attrs[HWSIM_ATTR_NO_VIF])
4350 param.no_vif = true;
4351
4352 if (info->attrs[HWSIM_ATTR_USE_CHANCTX])
4353 param.use_chanctx = true;
4354 else
4355 param.use_chanctx = (param.channels > 1);
4356
4357 if (info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2])
4358 param.reg_alpha2 =
4359 nla_data(info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2]);
4360
4361 if (info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]) {
4362 u32 idx = nla_get_u32(info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]);
4363
4364 if (idx >= ARRAY_SIZE(hwsim_world_regdom_custom))
4365 return -EINVAL;
4366
4367 idx = array_index_nospec(idx,
4368 ARRAY_SIZE(hwsim_world_regdom_custom));
4369 param.regd = hwsim_world_regdom_custom[idx];
4370 }
4371
4372 if (info->attrs[HWSIM_ATTR_PERM_ADDR]) {
4373 if (!is_valid_ether_addr(
4374 nla_data(info->attrs[HWSIM_ATTR_PERM_ADDR]))) {
4375 GENL_SET_ERR_MSG(info,"MAC is no valid source addr");
4376 NL_SET_BAD_ATTR(info->extack,
4377 info->attrs[HWSIM_ATTR_PERM_ADDR]);
4378 return -EINVAL;
4379 }
4380
4381 param.perm_addr = nla_data(info->attrs[HWSIM_ATTR_PERM_ADDR]);
4382 }
4383
4384 if (info->attrs[HWSIM_ATTR_IFTYPE_SUPPORT]) {
4385 param.iftypes =
4386 nla_get_u32(info->attrs[HWSIM_ATTR_IFTYPE_SUPPORT]);
4387
4388 if (param.iftypes & ~HWSIM_IFTYPE_SUPPORT_MASK) {
4389 NL_SET_ERR_MSG_ATTR(info->extack,
4390 info->attrs[HWSIM_ATTR_IFTYPE_SUPPORT],
4391 "cannot support more iftypes than kernel");
4392 return -EINVAL;
4393 }
4394 } else {
4395 param.iftypes = HWSIM_IFTYPE_SUPPORT_MASK;
4396 }
4397
4398 /* ensure both flag and iftype support is honored */
4399 if (param.p2p_device ||
4400 param.iftypes & BIT(NL80211_IFTYPE_P2P_DEVICE)) {
4401 param.iftypes |= BIT(NL80211_IFTYPE_P2P_DEVICE);
4402 param.p2p_device = true;
4403 }
4404
4405 if (info->attrs[HWSIM_ATTR_CIPHER_SUPPORT]) {
4406 u32 len = nla_len(info->attrs[HWSIM_ATTR_CIPHER_SUPPORT]);
4407
4408 param.ciphers =
4409 nla_data(info->attrs[HWSIM_ATTR_CIPHER_SUPPORT]);
4410
4411 if (len % sizeof(u32)) {
4412 NL_SET_ERR_MSG_ATTR(info->extack,
4413 info->attrs[HWSIM_ATTR_CIPHER_SUPPORT],
4414 "bad cipher list length");
4415 return -EINVAL;
4416 }
4417
4418 param.n_ciphers = len / sizeof(u32);
4419
4420 if (param.n_ciphers > ARRAY_SIZE(hwsim_ciphers)) {
4421 NL_SET_ERR_MSG_ATTR(info->extack,
4422 info->attrs[HWSIM_ATTR_CIPHER_SUPPORT],
4423 "too many ciphers specified");
4424 return -EINVAL;
4425 }
4426
4427 if (!hwsim_known_ciphers(param.ciphers, param.n_ciphers)) {
4428 NL_SET_ERR_MSG_ATTR(info->extack,
4429 info->attrs[HWSIM_ATTR_CIPHER_SUPPORT],
4430 "unsupported ciphers specified");
4431 return -EINVAL;
4432 }
4433 }
4434
4435 if (info->attrs[HWSIM_ATTR_RADIO_NAME]) {
4436 hwname = kstrndup((char *)nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]),
4437 nla_len(info->attrs[HWSIM_ATTR_RADIO_NAME]),
4438 GFP_KERNEL);
4439 if (!hwname)
4440 return -ENOMEM;
4441 param.hwname = hwname;
4442 }
4443
4444 ret = mac80211_hwsim_new_radio(info, ¶m);
4445 kfree(hwname);
4446 return ret;
4447 }
4448
hwsim_del_radio_nl(struct sk_buff * msg,struct genl_info * info)4449 static int hwsim_del_radio_nl(struct sk_buff *msg, struct genl_info *info)
4450 {
4451 struct mac80211_hwsim_data *data;
4452 s64 idx = -1;
4453 const char *hwname = NULL;
4454
4455 if (info->attrs[HWSIM_ATTR_RADIO_ID]) {
4456 idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
4457 } else if (info->attrs[HWSIM_ATTR_RADIO_NAME]) {
4458 hwname = kstrndup((char *)nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]),
4459 nla_len(info->attrs[HWSIM_ATTR_RADIO_NAME]),
4460 GFP_KERNEL);
4461 if (!hwname)
4462 return -ENOMEM;
4463 } else
4464 return -EINVAL;
4465
4466 spin_lock_bh(&hwsim_radio_lock);
4467 list_for_each_entry(data, &hwsim_radios, list) {
4468 if (idx >= 0) {
4469 if (data->idx != idx)
4470 continue;
4471 } else {
4472 if (!hwname ||
4473 strcmp(hwname, wiphy_name(data->hw->wiphy)))
4474 continue;
4475 }
4476
4477 if (!net_eq(wiphy_net(data->hw->wiphy), genl_info_net(info)))
4478 continue;
4479
4480 list_del(&data->list);
4481 rhashtable_remove_fast(&hwsim_radios_rht, &data->rht,
4482 hwsim_rht_params);
4483 hwsim_radios_generation++;
4484 spin_unlock_bh(&hwsim_radio_lock);
4485 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
4486 info);
4487 kfree(hwname);
4488 return 0;
4489 }
4490 spin_unlock_bh(&hwsim_radio_lock);
4491
4492 kfree(hwname);
4493 return -ENODEV;
4494 }
4495
hwsim_get_radio_nl(struct sk_buff * msg,struct genl_info * info)4496 static int hwsim_get_radio_nl(struct sk_buff *msg, struct genl_info *info)
4497 {
4498 struct mac80211_hwsim_data *data;
4499 struct sk_buff *skb;
4500 int idx, res = -ENODEV;
4501
4502 if (!info->attrs[HWSIM_ATTR_RADIO_ID])
4503 return -EINVAL;
4504 idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
4505
4506 spin_lock_bh(&hwsim_radio_lock);
4507 list_for_each_entry(data, &hwsim_radios, list) {
4508 if (data->idx != idx)
4509 continue;
4510
4511 if (!net_eq(wiphy_net(data->hw->wiphy), genl_info_net(info)))
4512 continue;
4513
4514 skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
4515 if (!skb) {
4516 res = -ENOMEM;
4517 goto out_err;
4518 }
4519
4520 res = mac80211_hwsim_get_radio(skb, data, info->snd_portid,
4521 info->snd_seq, NULL, 0);
4522 if (res < 0) {
4523 nlmsg_free(skb);
4524 goto out_err;
4525 }
4526
4527 res = genlmsg_reply(skb, info);
4528 break;
4529 }
4530
4531 out_err:
4532 spin_unlock_bh(&hwsim_radio_lock);
4533
4534 return res;
4535 }
4536
hwsim_dump_radio_nl(struct sk_buff * skb,struct netlink_callback * cb)4537 static int hwsim_dump_radio_nl(struct sk_buff *skb,
4538 struct netlink_callback *cb)
4539 {
4540 int last_idx = cb->args[0] - 1;
4541 struct mac80211_hwsim_data *data = NULL;
4542 int res = 0;
4543 void *hdr;
4544
4545 spin_lock_bh(&hwsim_radio_lock);
4546 cb->seq = hwsim_radios_generation;
4547
4548 if (last_idx >= hwsim_radio_idx-1)
4549 goto done;
4550
4551 list_for_each_entry(data, &hwsim_radios, list) {
4552 if (data->idx <= last_idx)
4553 continue;
4554
4555 if (!net_eq(wiphy_net(data->hw->wiphy), sock_net(skb->sk)))
4556 continue;
4557
4558 res = mac80211_hwsim_get_radio(skb, data,
4559 NETLINK_CB(cb->skb).portid,
4560 cb->nlh->nlmsg_seq, cb,
4561 NLM_F_MULTI);
4562 if (res < 0)
4563 break;
4564
4565 last_idx = data->idx;
4566 }
4567
4568 cb->args[0] = last_idx + 1;
4569
4570 /* list changed, but no new element sent, set interrupted flag */
4571 if (skb->len == 0 && cb->prev_seq && cb->seq != cb->prev_seq) {
4572 hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid,
4573 cb->nlh->nlmsg_seq, &hwsim_genl_family,
4574 NLM_F_MULTI, HWSIM_CMD_GET_RADIO);
4575 if (hdr) {
4576 genl_dump_check_consistent(cb, hdr);
4577 genlmsg_end(skb, hdr);
4578 } else {
4579 res = -EMSGSIZE;
4580 }
4581 }
4582
4583 done:
4584 spin_unlock_bh(&hwsim_radio_lock);
4585 return res ?: skb->len;
4586 }
4587
4588 /* Generic Netlink operations array */
4589 static const struct genl_small_ops hwsim_ops[] = {
4590 {
4591 .cmd = HWSIM_CMD_REGISTER,
4592 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
4593 .doit = hwsim_register_received_nl,
4594 .flags = GENL_UNS_ADMIN_PERM,
4595 },
4596 {
4597 .cmd = HWSIM_CMD_FRAME,
4598 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
4599 .doit = hwsim_cloned_frame_received_nl,
4600 },
4601 {
4602 .cmd = HWSIM_CMD_TX_INFO_FRAME,
4603 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
4604 .doit = hwsim_tx_info_frame_received_nl,
4605 },
4606 {
4607 .cmd = HWSIM_CMD_NEW_RADIO,
4608 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
4609 .doit = hwsim_new_radio_nl,
4610 .flags = GENL_UNS_ADMIN_PERM,
4611 },
4612 {
4613 .cmd = HWSIM_CMD_DEL_RADIO,
4614 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
4615 .doit = hwsim_del_radio_nl,
4616 .flags = GENL_UNS_ADMIN_PERM,
4617 },
4618 {
4619 .cmd = HWSIM_CMD_GET_RADIO,
4620 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
4621 .doit = hwsim_get_radio_nl,
4622 .dumpit = hwsim_dump_radio_nl,
4623 },
4624 };
4625
4626 static struct genl_family hwsim_genl_family __ro_after_init = {
4627 .name = "MAC80211_HWSIM",
4628 .version = 1,
4629 .maxattr = HWSIM_ATTR_MAX,
4630 .policy = hwsim_genl_policy,
4631 .netnsok = true,
4632 .module = THIS_MODULE,
4633 .small_ops = hwsim_ops,
4634 .n_small_ops = ARRAY_SIZE(hwsim_ops),
4635 .mcgrps = hwsim_mcgrps,
4636 .n_mcgrps = ARRAY_SIZE(hwsim_mcgrps),
4637 };
4638
remove_user_radios(u32 portid)4639 static void remove_user_radios(u32 portid)
4640 {
4641 struct mac80211_hwsim_data *entry, *tmp;
4642 LIST_HEAD(list);
4643
4644 spin_lock_bh(&hwsim_radio_lock);
4645 list_for_each_entry_safe(entry, tmp, &hwsim_radios, list) {
4646 if (entry->destroy_on_close && entry->portid == portid) {
4647 list_move(&entry->list, &list);
4648 rhashtable_remove_fast(&hwsim_radios_rht, &entry->rht,
4649 hwsim_rht_params);
4650 hwsim_radios_generation++;
4651 }
4652 }
4653 spin_unlock_bh(&hwsim_radio_lock);
4654
4655 list_for_each_entry_safe(entry, tmp, &list, list) {
4656 list_del(&entry->list);
4657 mac80211_hwsim_del_radio(entry, wiphy_name(entry->hw->wiphy),
4658 NULL);
4659 }
4660 }
4661
mac80211_hwsim_netlink_notify(struct notifier_block * nb,unsigned long state,void * _notify)4662 static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
4663 unsigned long state,
4664 void *_notify)
4665 {
4666 struct netlink_notify *notify = _notify;
4667
4668 if (state != NETLINK_URELEASE)
4669 return NOTIFY_DONE;
4670
4671 remove_user_radios(notify->portid);
4672
4673 if (notify->portid == hwsim_net_get_wmediumd(notify->net)) {
4674 printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
4675 " socket, switching to perfect channel medium\n");
4676 hwsim_register_wmediumd(notify->net, 0);
4677 }
4678 return NOTIFY_DONE;
4679
4680 }
4681
4682 static struct notifier_block hwsim_netlink_notifier = {
4683 .notifier_call = mac80211_hwsim_netlink_notify,
4684 };
4685
hwsim_init_netlink(void)4686 static int __init hwsim_init_netlink(void)
4687 {
4688 int rc;
4689
4690 printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
4691
4692 rc = genl_register_family(&hwsim_genl_family);
4693 if (rc)
4694 goto failure;
4695
4696 rc = netlink_register_notifier(&hwsim_netlink_notifier);
4697 if (rc) {
4698 genl_unregister_family(&hwsim_genl_family);
4699 goto failure;
4700 }
4701
4702 return 0;
4703
4704 failure:
4705 pr_debug("mac80211_hwsim: error occurred in %s\n", __func__);
4706 return -EINVAL;
4707 }
4708
hwsim_init_net(struct net * net)4709 static __net_init int hwsim_init_net(struct net *net)
4710 {
4711 return hwsim_net_set_netgroup(net);
4712 }
4713
hwsim_exit_net(struct net * net)4714 static void __net_exit hwsim_exit_net(struct net *net)
4715 {
4716 struct mac80211_hwsim_data *data, *tmp;
4717 LIST_HEAD(list);
4718
4719 spin_lock_bh(&hwsim_radio_lock);
4720 list_for_each_entry_safe(data, tmp, &hwsim_radios, list) {
4721 if (!net_eq(wiphy_net(data->hw->wiphy), net))
4722 continue;
4723
4724 /* Radios created in init_net are returned to init_net. */
4725 if (data->netgroup == hwsim_net_get_netgroup(&init_net))
4726 continue;
4727
4728 list_move(&data->list, &list);
4729 rhashtable_remove_fast(&hwsim_radios_rht, &data->rht,
4730 hwsim_rht_params);
4731 hwsim_radios_generation++;
4732 }
4733 spin_unlock_bh(&hwsim_radio_lock);
4734
4735 list_for_each_entry_safe(data, tmp, &list, list) {
4736 list_del(&data->list);
4737 mac80211_hwsim_del_radio(data,
4738 wiphy_name(data->hw->wiphy),
4739 NULL);
4740 }
4741
4742 ida_simple_remove(&hwsim_netgroup_ida, hwsim_net_get_netgroup(net));
4743 }
4744
4745 static struct pernet_operations hwsim_net_ops = {
4746 .init = hwsim_init_net,
4747 .exit = hwsim_exit_net,
4748 .id = &hwsim_net_id,
4749 .size = sizeof(struct hwsim_net),
4750 };
4751
hwsim_exit_netlink(void)4752 static void hwsim_exit_netlink(void)
4753 {
4754 /* unregister the notifier */
4755 netlink_unregister_notifier(&hwsim_netlink_notifier);
4756 /* unregister the family */
4757 genl_unregister_family(&hwsim_genl_family);
4758 }
4759
4760 #if IS_REACHABLE(CONFIG_VIRTIO)
hwsim_virtio_tx_done(struct virtqueue * vq)4761 static void hwsim_virtio_tx_done(struct virtqueue *vq)
4762 {
4763 unsigned int len;
4764 struct sk_buff *skb;
4765 unsigned long flags;
4766
4767 spin_lock_irqsave(&hwsim_virtio_lock, flags);
4768 while ((skb = virtqueue_get_buf(vq, &len)))
4769 nlmsg_free(skb);
4770 spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
4771 }
4772
hwsim_virtio_handle_cmd(struct sk_buff * skb)4773 static int hwsim_virtio_handle_cmd(struct sk_buff *skb)
4774 {
4775 struct nlmsghdr *nlh;
4776 struct genlmsghdr *gnlh;
4777 struct nlattr *tb[HWSIM_ATTR_MAX + 1];
4778 struct genl_info info = {};
4779 int err;
4780
4781 nlh = nlmsg_hdr(skb);
4782 gnlh = nlmsg_data(nlh);
4783 err = genlmsg_parse(nlh, &hwsim_genl_family, tb, HWSIM_ATTR_MAX,
4784 hwsim_genl_policy, NULL);
4785 if (err) {
4786 pr_err_ratelimited("hwsim: genlmsg_parse returned %d\n", err);
4787 return err;
4788 }
4789
4790 info.attrs = tb;
4791
4792 switch (gnlh->cmd) {
4793 case HWSIM_CMD_FRAME:
4794 hwsim_cloned_frame_received_nl(skb, &info);
4795 break;
4796 case HWSIM_CMD_TX_INFO_FRAME:
4797 hwsim_tx_info_frame_received_nl(skb, &info);
4798 break;
4799 default:
4800 pr_err_ratelimited("hwsim: invalid cmd: %d\n", gnlh->cmd);
4801 return -EPROTO;
4802 }
4803 return 0;
4804 }
4805
hwsim_virtio_rx_work(struct work_struct * work)4806 static void hwsim_virtio_rx_work(struct work_struct *work)
4807 {
4808 struct virtqueue *vq;
4809 unsigned int len;
4810 struct sk_buff *skb;
4811 struct scatterlist sg[1];
4812 int err;
4813 unsigned long flags;
4814
4815 spin_lock_irqsave(&hwsim_virtio_lock, flags);
4816 if (!hwsim_virtio_enabled)
4817 goto out_unlock;
4818
4819 skb = virtqueue_get_buf(hwsim_vqs[HWSIM_VQ_RX], &len);
4820 if (!skb)
4821 goto out_unlock;
4822 spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
4823
4824 skb->data = skb->head;
4825 skb_set_tail_pointer(skb, len);
4826 hwsim_virtio_handle_cmd(skb);
4827
4828 spin_lock_irqsave(&hwsim_virtio_lock, flags);
4829 if (!hwsim_virtio_enabled) {
4830 nlmsg_free(skb);
4831 goto out_unlock;
4832 }
4833 vq = hwsim_vqs[HWSIM_VQ_RX];
4834 sg_init_one(sg, skb->head, skb_end_offset(skb));
4835 err = virtqueue_add_inbuf(vq, sg, 1, skb, GFP_ATOMIC);
4836 if (WARN(err, "virtqueue_add_inbuf returned %d\n", err))
4837 nlmsg_free(skb);
4838 else
4839 virtqueue_kick(vq);
4840 schedule_work(&hwsim_virtio_rx);
4841
4842 out_unlock:
4843 spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
4844 }
4845
hwsim_virtio_rx_done(struct virtqueue * vq)4846 static void hwsim_virtio_rx_done(struct virtqueue *vq)
4847 {
4848 schedule_work(&hwsim_virtio_rx);
4849 }
4850
init_vqs(struct virtio_device * vdev)4851 static int init_vqs(struct virtio_device *vdev)
4852 {
4853 vq_callback_t *callbacks[HWSIM_NUM_VQS] = {
4854 [HWSIM_VQ_TX] = hwsim_virtio_tx_done,
4855 [HWSIM_VQ_RX] = hwsim_virtio_rx_done,
4856 };
4857 const char *names[HWSIM_NUM_VQS] = {
4858 [HWSIM_VQ_TX] = "tx",
4859 [HWSIM_VQ_RX] = "rx",
4860 };
4861
4862 return virtio_find_vqs(vdev, HWSIM_NUM_VQS,
4863 hwsim_vqs, callbacks, names, NULL);
4864 }
4865
fill_vq(struct virtqueue * vq)4866 static int fill_vq(struct virtqueue *vq)
4867 {
4868 int i, err;
4869 struct sk_buff *skb;
4870 struct scatterlist sg[1];
4871
4872 for (i = 0; i < virtqueue_get_vring_size(vq); i++) {
4873 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
4874 if (!skb)
4875 return -ENOMEM;
4876
4877 sg_init_one(sg, skb->head, skb_end_offset(skb));
4878 err = virtqueue_add_inbuf(vq, sg, 1, skb, GFP_KERNEL);
4879 if (err) {
4880 nlmsg_free(skb);
4881 return err;
4882 }
4883 }
4884 virtqueue_kick(vq);
4885 return 0;
4886 }
4887
remove_vqs(struct virtio_device * vdev)4888 static void remove_vqs(struct virtio_device *vdev)
4889 {
4890 int i;
4891
4892 virtio_reset_device(vdev);
4893
4894 for (i = 0; i < ARRAY_SIZE(hwsim_vqs); i++) {
4895 struct virtqueue *vq = hwsim_vqs[i];
4896 struct sk_buff *skb;
4897
4898 while ((skb = virtqueue_detach_unused_buf(vq)))
4899 nlmsg_free(skb);
4900 }
4901
4902 vdev->config->del_vqs(vdev);
4903 }
4904
hwsim_virtio_probe(struct virtio_device * vdev)4905 static int hwsim_virtio_probe(struct virtio_device *vdev)
4906 {
4907 int err;
4908 unsigned long flags;
4909
4910 spin_lock_irqsave(&hwsim_virtio_lock, flags);
4911 if (hwsim_virtio_enabled) {
4912 spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
4913 return -EEXIST;
4914 }
4915 spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
4916
4917 err = init_vqs(vdev);
4918 if (err)
4919 return err;
4920
4921 virtio_device_ready(vdev);
4922
4923 err = fill_vq(hwsim_vqs[HWSIM_VQ_RX]);
4924 if (err)
4925 goto out_remove;
4926
4927 spin_lock_irqsave(&hwsim_virtio_lock, flags);
4928 hwsim_virtio_enabled = true;
4929 spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
4930
4931 schedule_work(&hwsim_virtio_rx);
4932 return 0;
4933
4934 out_remove:
4935 remove_vqs(vdev);
4936 return err;
4937 }
4938
hwsim_virtio_remove(struct virtio_device * vdev)4939 static void hwsim_virtio_remove(struct virtio_device *vdev)
4940 {
4941 hwsim_virtio_enabled = false;
4942
4943 cancel_work_sync(&hwsim_virtio_rx);
4944
4945 remove_vqs(vdev);
4946 }
4947
4948 /* MAC80211_HWSIM virtio device id table */
4949 static const struct virtio_device_id id_table[] = {
4950 { VIRTIO_ID_MAC80211_HWSIM, VIRTIO_DEV_ANY_ID },
4951 { 0 }
4952 };
4953 MODULE_DEVICE_TABLE(virtio, id_table);
4954
4955 static struct virtio_driver virtio_hwsim = {
4956 .driver.name = KBUILD_MODNAME,
4957 .driver.owner = THIS_MODULE,
4958 .id_table = id_table,
4959 .probe = hwsim_virtio_probe,
4960 .remove = hwsim_virtio_remove,
4961 };
4962
hwsim_register_virtio_driver(void)4963 static int hwsim_register_virtio_driver(void)
4964 {
4965 return register_virtio_driver(&virtio_hwsim);
4966 }
4967
hwsim_unregister_virtio_driver(void)4968 static void hwsim_unregister_virtio_driver(void)
4969 {
4970 unregister_virtio_driver(&virtio_hwsim);
4971 }
4972 #else
hwsim_register_virtio_driver(void)4973 static inline int hwsim_register_virtio_driver(void)
4974 {
4975 return 0;
4976 }
4977
hwsim_unregister_virtio_driver(void)4978 static inline void hwsim_unregister_virtio_driver(void)
4979 {
4980 }
4981 #endif
4982
init_mac80211_hwsim(void)4983 static int __init init_mac80211_hwsim(void)
4984 {
4985 int i, err;
4986
4987 if (radios < 0 || radios > 100)
4988 return -EINVAL;
4989
4990 if (channels < 1)
4991 return -EINVAL;
4992
4993 err = rhashtable_init(&hwsim_radios_rht, &hwsim_rht_params);
4994 if (err)
4995 return err;
4996
4997 err = register_pernet_device(&hwsim_net_ops);
4998 if (err)
4999 goto out_free_rht;
5000
5001 err = platform_driver_register(&mac80211_hwsim_driver);
5002 if (err)
5003 goto out_unregister_pernet;
5004
5005 err = hwsim_init_netlink();
5006 if (err)
5007 goto out_unregister_driver;
5008
5009 err = hwsim_register_virtio_driver();
5010 if (err)
5011 goto out_exit_netlink;
5012
5013 hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
5014 if (IS_ERR(hwsim_class)) {
5015 err = PTR_ERR(hwsim_class);
5016 goto out_exit_virtio;
5017 }
5018
5019 hwsim_init_s1g_channels(hwsim_channels_s1g);
5020
5021 for (i = 0; i < radios; i++) {
5022 struct hwsim_new_radio_params param = { 0 };
5023
5024 param.channels = channels;
5025
5026 switch (regtest) {
5027 case HWSIM_REGTEST_DIFF_COUNTRY:
5028 if (i < ARRAY_SIZE(hwsim_alpha2s))
5029 param.reg_alpha2 = hwsim_alpha2s[i];
5030 break;
5031 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
5032 if (!i)
5033 param.reg_alpha2 = hwsim_alpha2s[0];
5034 break;
5035 case HWSIM_REGTEST_STRICT_ALL:
5036 param.reg_strict = true;
5037 fallthrough;
5038 case HWSIM_REGTEST_DRIVER_REG_ALL:
5039 param.reg_alpha2 = hwsim_alpha2s[0];
5040 break;
5041 case HWSIM_REGTEST_WORLD_ROAM:
5042 if (i == 0)
5043 param.regd = &hwsim_world_regdom_custom_01;
5044 break;
5045 case HWSIM_REGTEST_CUSTOM_WORLD:
5046 param.regd = &hwsim_world_regdom_custom_01;
5047 break;
5048 case HWSIM_REGTEST_CUSTOM_WORLD_2:
5049 if (i == 0)
5050 param.regd = &hwsim_world_regdom_custom_01;
5051 else if (i == 1)
5052 param.regd = &hwsim_world_regdom_custom_02;
5053 break;
5054 case HWSIM_REGTEST_STRICT_FOLLOW:
5055 if (i == 0) {
5056 param.reg_strict = true;
5057 param.reg_alpha2 = hwsim_alpha2s[0];
5058 }
5059 break;
5060 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
5061 if (i == 0) {
5062 param.reg_strict = true;
5063 param.reg_alpha2 = hwsim_alpha2s[0];
5064 } else if (i == 1) {
5065 param.reg_alpha2 = hwsim_alpha2s[1];
5066 }
5067 break;
5068 case HWSIM_REGTEST_ALL:
5069 switch (i) {
5070 case 0:
5071 param.regd = &hwsim_world_regdom_custom_01;
5072 break;
5073 case 1:
5074 param.regd = &hwsim_world_regdom_custom_02;
5075 break;
5076 case 2:
5077 param.reg_alpha2 = hwsim_alpha2s[0];
5078 break;
5079 case 3:
5080 param.reg_alpha2 = hwsim_alpha2s[1];
5081 break;
5082 case 4:
5083 param.reg_strict = true;
5084 param.reg_alpha2 = hwsim_alpha2s[2];
5085 break;
5086 }
5087 break;
5088 default:
5089 break;
5090 }
5091
5092 param.p2p_device = support_p2p_device;
5093 param.use_chanctx = channels > 1;
5094 param.iftypes = HWSIM_IFTYPE_SUPPORT_MASK;
5095 if (param.p2p_device)
5096 param.iftypes |= BIT(NL80211_IFTYPE_P2P_DEVICE);
5097
5098 err = mac80211_hwsim_new_radio(NULL, ¶m);
5099 if (err < 0)
5100 goto out_free_radios;
5101 }
5102
5103 hwsim_mon = alloc_netdev(0, "hwsim%d", NET_NAME_UNKNOWN,
5104 hwsim_mon_setup);
5105 if (hwsim_mon == NULL) {
5106 err = -ENOMEM;
5107 goto out_free_radios;
5108 }
5109
5110 rtnl_lock();
5111 err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
5112 if (err < 0) {
5113 rtnl_unlock();
5114 goto out_free_mon;
5115 }
5116
5117 err = register_netdevice(hwsim_mon);
5118 if (err < 0) {
5119 rtnl_unlock();
5120 goto out_free_mon;
5121 }
5122 rtnl_unlock();
5123
5124 return 0;
5125
5126 out_free_mon:
5127 free_netdev(hwsim_mon);
5128 out_free_radios:
5129 mac80211_hwsim_free();
5130 out_exit_virtio:
5131 hwsim_unregister_virtio_driver();
5132 out_exit_netlink:
5133 hwsim_exit_netlink();
5134 out_unregister_driver:
5135 platform_driver_unregister(&mac80211_hwsim_driver);
5136 out_unregister_pernet:
5137 unregister_pernet_device(&hwsim_net_ops);
5138 out_free_rht:
5139 rhashtable_destroy(&hwsim_radios_rht);
5140 return err;
5141 }
5142 module_init(init_mac80211_hwsim);
5143
exit_mac80211_hwsim(void)5144 static void __exit exit_mac80211_hwsim(void)
5145 {
5146 pr_debug("mac80211_hwsim: unregister radios\n");
5147
5148 hwsim_unregister_virtio_driver();
5149 hwsim_exit_netlink();
5150
5151 mac80211_hwsim_free();
5152
5153 rhashtable_destroy(&hwsim_radios_rht);
5154 unregister_netdev(hwsim_mon);
5155 platform_driver_unregister(&mac80211_hwsim_driver);
5156 unregister_pernet_device(&hwsim_net_ops);
5157 }
5158 module_exit(exit_mac80211_hwsim);
5159