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 - 2020 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[] = {
177 &hwsim_world_regdom_custom_01,
178 &hwsim_world_regdom_custom_02,
179 };
180
181 struct hwsim_vif_priv {
182 u32 magic;
183 u8 bssid[ETH_ALEN];
184 bool assoc;
185 bool bcn_en;
186 u16 aid;
187 };
188
189 #define HWSIM_VIF_MAGIC 0x69537748
190
hwsim_check_magic(struct ieee80211_vif * vif)191 static inline void hwsim_check_magic(struct ieee80211_vif *vif)
192 {
193 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
194 WARN(vp->magic != HWSIM_VIF_MAGIC,
195 "Invalid VIF (%p) magic %#x, %pM, %d/%d\n",
196 vif, vp->magic, vif->addr, vif->type, vif->p2p);
197 }
198
hwsim_set_magic(struct ieee80211_vif * vif)199 static inline void hwsim_set_magic(struct ieee80211_vif *vif)
200 {
201 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
202 vp->magic = HWSIM_VIF_MAGIC;
203 }
204
hwsim_clear_magic(struct ieee80211_vif * vif)205 static inline void hwsim_clear_magic(struct ieee80211_vif *vif)
206 {
207 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
208 vp->magic = 0;
209 }
210
211 struct hwsim_sta_priv {
212 u32 magic;
213 };
214
215 #define HWSIM_STA_MAGIC 0x6d537749
216
hwsim_check_sta_magic(struct ieee80211_sta * sta)217 static inline void hwsim_check_sta_magic(struct ieee80211_sta *sta)
218 {
219 struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
220 WARN_ON(sp->magic != HWSIM_STA_MAGIC);
221 }
222
hwsim_set_sta_magic(struct ieee80211_sta * sta)223 static inline void hwsim_set_sta_magic(struct ieee80211_sta *sta)
224 {
225 struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
226 sp->magic = HWSIM_STA_MAGIC;
227 }
228
hwsim_clear_sta_magic(struct ieee80211_sta * sta)229 static inline void hwsim_clear_sta_magic(struct ieee80211_sta *sta)
230 {
231 struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
232 sp->magic = 0;
233 }
234
235 struct hwsim_chanctx_priv {
236 u32 magic;
237 };
238
239 #define HWSIM_CHANCTX_MAGIC 0x6d53774a
240
hwsim_check_chanctx_magic(struct ieee80211_chanctx_conf * c)241 static inline void hwsim_check_chanctx_magic(struct ieee80211_chanctx_conf *c)
242 {
243 struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
244 WARN_ON(cp->magic != HWSIM_CHANCTX_MAGIC);
245 }
246
hwsim_set_chanctx_magic(struct ieee80211_chanctx_conf * c)247 static inline void hwsim_set_chanctx_magic(struct ieee80211_chanctx_conf *c)
248 {
249 struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
250 cp->magic = HWSIM_CHANCTX_MAGIC;
251 }
252
hwsim_clear_chanctx_magic(struct ieee80211_chanctx_conf * c)253 static inline void hwsim_clear_chanctx_magic(struct ieee80211_chanctx_conf *c)
254 {
255 struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
256 cp->magic = 0;
257 }
258
259 static unsigned int hwsim_net_id;
260
261 static DEFINE_IDA(hwsim_netgroup_ida);
262
263 struct hwsim_net {
264 int netgroup;
265 u32 wmediumd;
266 };
267
hwsim_net_get_netgroup(struct net * net)268 static inline int hwsim_net_get_netgroup(struct net *net)
269 {
270 struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
271
272 return hwsim_net->netgroup;
273 }
274
hwsim_net_set_netgroup(struct net * net)275 static inline int hwsim_net_set_netgroup(struct net *net)
276 {
277 struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
278
279 hwsim_net->netgroup = ida_simple_get(&hwsim_netgroup_ida,
280 0, 0, GFP_KERNEL);
281 return hwsim_net->netgroup >= 0 ? 0 : -ENOMEM;
282 }
283
hwsim_net_get_wmediumd(struct net * net)284 static inline u32 hwsim_net_get_wmediumd(struct net *net)
285 {
286 struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
287
288 return hwsim_net->wmediumd;
289 }
290
hwsim_net_set_wmediumd(struct net * net,u32 portid)291 static inline void hwsim_net_set_wmediumd(struct net *net, u32 portid)
292 {
293 struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
294
295 hwsim_net->wmediumd = portid;
296 }
297
298 static struct class *hwsim_class;
299
300 static struct net_device *hwsim_mon; /* global monitor netdev */
301
302 #define CHAN2G(_freq) { \
303 .band = NL80211_BAND_2GHZ, \
304 .center_freq = (_freq), \
305 .hw_value = (_freq), \
306 }
307
308 #define CHAN5G(_freq) { \
309 .band = NL80211_BAND_5GHZ, \
310 .center_freq = (_freq), \
311 .hw_value = (_freq), \
312 }
313
314 #define CHAN6G(_freq) { \
315 .band = NL80211_BAND_6GHZ, \
316 .center_freq = (_freq), \
317 .hw_value = (_freq), \
318 }
319
320 static const struct ieee80211_channel hwsim_channels_2ghz[] = {
321 CHAN2G(2412), /* Channel 1 */
322 CHAN2G(2417), /* Channel 2 */
323 CHAN2G(2422), /* Channel 3 */
324 CHAN2G(2427), /* Channel 4 */
325 CHAN2G(2432), /* Channel 5 */
326 CHAN2G(2437), /* Channel 6 */
327 CHAN2G(2442), /* Channel 7 */
328 CHAN2G(2447), /* Channel 8 */
329 CHAN2G(2452), /* Channel 9 */
330 CHAN2G(2457), /* Channel 10 */
331 CHAN2G(2462), /* Channel 11 */
332 CHAN2G(2467), /* Channel 12 */
333 CHAN2G(2472), /* Channel 13 */
334 CHAN2G(2484), /* Channel 14 */
335 };
336
337 static const struct ieee80211_channel hwsim_channels_5ghz[] = {
338 CHAN5G(5180), /* Channel 36 */
339 CHAN5G(5200), /* Channel 40 */
340 CHAN5G(5220), /* Channel 44 */
341 CHAN5G(5240), /* Channel 48 */
342
343 CHAN5G(5260), /* Channel 52 */
344 CHAN5G(5280), /* Channel 56 */
345 CHAN5G(5300), /* Channel 60 */
346 CHAN5G(5320), /* Channel 64 */
347
348 CHAN5G(5500), /* Channel 100 */
349 CHAN5G(5520), /* Channel 104 */
350 CHAN5G(5540), /* Channel 108 */
351 CHAN5G(5560), /* Channel 112 */
352 CHAN5G(5580), /* Channel 116 */
353 CHAN5G(5600), /* Channel 120 */
354 CHAN5G(5620), /* Channel 124 */
355 CHAN5G(5640), /* Channel 128 */
356 CHAN5G(5660), /* Channel 132 */
357 CHAN5G(5680), /* Channel 136 */
358 CHAN5G(5700), /* Channel 140 */
359
360 CHAN5G(5745), /* Channel 149 */
361 CHAN5G(5765), /* Channel 153 */
362 CHAN5G(5785), /* Channel 157 */
363 CHAN5G(5805), /* Channel 161 */
364 CHAN5G(5825), /* Channel 165 */
365 CHAN5G(5845), /* Channel 169 */
366
367 CHAN5G(5855), /* Channel 171 */
368 CHAN5G(5860), /* Channel 172 */
369 CHAN5G(5865), /* Channel 173 */
370 CHAN5G(5870), /* Channel 174 */
371
372 CHAN5G(5875), /* Channel 175 */
373 CHAN5G(5880), /* Channel 176 */
374 CHAN5G(5885), /* Channel 177 */
375 CHAN5G(5890), /* Channel 178 */
376 CHAN5G(5895), /* Channel 179 */
377 CHAN5G(5900), /* Channel 180 */
378 CHAN5G(5905), /* Channel 181 */
379
380 CHAN5G(5910), /* Channel 182 */
381 CHAN5G(5915), /* Channel 183 */
382 CHAN5G(5920), /* Channel 184 */
383 CHAN5G(5925), /* Channel 185 */
384 };
385
386 static const struct ieee80211_channel hwsim_channels_6ghz[] = {
387 CHAN6G(5955), /* Channel 1 */
388 CHAN6G(5975), /* Channel 5 */
389 CHAN6G(5995), /* Channel 9 */
390 CHAN6G(6015), /* Channel 13 */
391 CHAN6G(6035), /* Channel 17 */
392 CHAN6G(6055), /* Channel 21 */
393 CHAN6G(6075), /* Channel 25 */
394 CHAN6G(6095), /* Channel 29 */
395 CHAN6G(6115), /* Channel 33 */
396 CHAN6G(6135), /* Channel 37 */
397 CHAN6G(6155), /* Channel 41 */
398 CHAN6G(6175), /* Channel 45 */
399 CHAN6G(6195), /* Channel 49 */
400 CHAN6G(6215), /* Channel 53 */
401 CHAN6G(6235), /* Channel 57 */
402 CHAN6G(6255), /* Channel 61 */
403 CHAN6G(6275), /* Channel 65 */
404 CHAN6G(6295), /* Channel 69 */
405 CHAN6G(6315), /* Channel 73 */
406 CHAN6G(6335), /* Channel 77 */
407 CHAN6G(6355), /* Channel 81 */
408 CHAN6G(6375), /* Channel 85 */
409 CHAN6G(6395), /* Channel 89 */
410 CHAN6G(6415), /* Channel 93 */
411 CHAN6G(6435), /* Channel 97 */
412 CHAN6G(6455), /* Channel 181 */
413 CHAN6G(6475), /* Channel 105 */
414 CHAN6G(6495), /* Channel 109 */
415 CHAN6G(6515), /* Channel 113 */
416 CHAN6G(6535), /* Channel 117 */
417 CHAN6G(6555), /* Channel 121 */
418 CHAN6G(6575), /* Channel 125 */
419 CHAN6G(6595), /* Channel 129 */
420 CHAN6G(6615), /* Channel 133 */
421 CHAN6G(6635), /* Channel 137 */
422 CHAN6G(6655), /* Channel 141 */
423 CHAN6G(6675), /* Channel 145 */
424 CHAN6G(6695), /* Channel 149 */
425 CHAN6G(6715), /* Channel 153 */
426 CHAN6G(6735), /* Channel 157 */
427 CHAN6G(6755), /* Channel 161 */
428 CHAN6G(6775), /* Channel 165 */
429 CHAN6G(6795), /* Channel 169 */
430 CHAN6G(6815), /* Channel 173 */
431 CHAN6G(6835), /* Channel 177 */
432 CHAN6G(6855), /* Channel 181 */
433 CHAN6G(6875), /* Channel 185 */
434 CHAN6G(6895), /* Channel 189 */
435 CHAN6G(6915), /* Channel 193 */
436 CHAN6G(6935), /* Channel 197 */
437 CHAN6G(6955), /* Channel 201 */
438 CHAN6G(6975), /* Channel 205 */
439 CHAN6G(6995), /* Channel 209 */
440 CHAN6G(7015), /* Channel 213 */
441 CHAN6G(7035), /* Channel 217 */
442 CHAN6G(7055), /* Channel 221 */
443 CHAN6G(7075), /* Channel 225 */
444 CHAN6G(7095), /* Channel 229 */
445 CHAN6G(7115), /* Channel 233 */
446 };
447
448 #define NUM_S1G_CHANS_US 51
449 static struct ieee80211_channel hwsim_channels_s1g[NUM_S1G_CHANS_US];
450
451 static const struct ieee80211_sta_s1g_cap hwsim_s1g_cap = {
452 .s1g = true,
453 .cap = { S1G_CAP0_SGI_1MHZ | S1G_CAP0_SGI_2MHZ,
454 0,
455 0,
456 S1G_CAP3_MAX_MPDU_LEN,
457 0,
458 S1G_CAP5_AMPDU,
459 0,
460 S1G_CAP7_DUP_1MHZ,
461 S1G_CAP8_TWT_RESPOND | S1G_CAP8_TWT_REQUEST,
462 0},
463 .nss_mcs = { 0xfc | 1, /* MCS 7 for 1 SS */
464 /* RX Highest Supported Long GI Data Rate 0:7 */
465 0,
466 /* RX Highest Supported Long GI Data Rate 0:7 */
467 /* TX S1G MCS Map 0:6 */
468 0xfa,
469 /* TX S1G MCS Map :7 */
470 /* TX Highest Supported Long GI Data Rate 0:6 */
471 0x80,
472 /* TX Highest Supported Long GI Data Rate 7:8 */
473 /* Rx Single spatial stream and S1G-MCS Map for 1MHz */
474 /* Tx Single spatial stream and S1G-MCS Map for 1MHz */
475 0 },
476 };
477
hwsim_init_s1g_channels(struct ieee80211_channel * channels)478 static void hwsim_init_s1g_channels(struct ieee80211_channel *channels)
479 {
480 int ch, freq;
481
482 for (ch = 0; ch < NUM_S1G_CHANS_US; ch++) {
483 freq = 902000 + (ch + 1) * 500;
484 channels[ch].band = NL80211_BAND_S1GHZ;
485 channels[ch].center_freq = KHZ_TO_MHZ(freq);
486 channels[ch].freq_offset = freq % 1000;
487 channels[ch].hw_value = ch + 1;
488 }
489 }
490
491 static const struct ieee80211_rate hwsim_rates[] = {
492 { .bitrate = 10 },
493 { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
494 { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
495 { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
496 { .bitrate = 60 },
497 { .bitrate = 90 },
498 { .bitrate = 120 },
499 { .bitrate = 180 },
500 { .bitrate = 240 },
501 { .bitrate = 360 },
502 { .bitrate = 480 },
503 { .bitrate = 540 }
504 };
505
506 static const u32 hwsim_ciphers[] = {
507 WLAN_CIPHER_SUITE_WEP40,
508 WLAN_CIPHER_SUITE_WEP104,
509 WLAN_CIPHER_SUITE_TKIP,
510 WLAN_CIPHER_SUITE_CCMP,
511 WLAN_CIPHER_SUITE_CCMP_256,
512 WLAN_CIPHER_SUITE_GCMP,
513 WLAN_CIPHER_SUITE_GCMP_256,
514 WLAN_CIPHER_SUITE_AES_CMAC,
515 WLAN_CIPHER_SUITE_BIP_CMAC_256,
516 WLAN_CIPHER_SUITE_BIP_GMAC_128,
517 WLAN_CIPHER_SUITE_BIP_GMAC_256,
518 };
519
520 #define OUI_QCA 0x001374
521 #define QCA_NL80211_SUBCMD_TEST 1
522 enum qca_nl80211_vendor_subcmds {
523 QCA_WLAN_VENDOR_ATTR_TEST = 8,
524 QCA_WLAN_VENDOR_ATTR_MAX = QCA_WLAN_VENDOR_ATTR_TEST
525 };
526
527 static const struct nla_policy
528 hwsim_vendor_test_policy[QCA_WLAN_VENDOR_ATTR_MAX + 1] = {
529 [QCA_WLAN_VENDOR_ATTR_MAX] = { .type = NLA_U32 },
530 };
531
mac80211_hwsim_vendor_cmd_test(struct wiphy * wiphy,struct wireless_dev * wdev,const void * data,int data_len)532 static int mac80211_hwsim_vendor_cmd_test(struct wiphy *wiphy,
533 struct wireless_dev *wdev,
534 const void *data, int data_len)
535 {
536 struct sk_buff *skb;
537 struct nlattr *tb[QCA_WLAN_VENDOR_ATTR_MAX + 1];
538 int err;
539 u32 val;
540
541 err = nla_parse_deprecated(tb, QCA_WLAN_VENDOR_ATTR_MAX, data,
542 data_len, hwsim_vendor_test_policy, NULL);
543 if (err)
544 return err;
545 if (!tb[QCA_WLAN_VENDOR_ATTR_TEST])
546 return -EINVAL;
547 val = nla_get_u32(tb[QCA_WLAN_VENDOR_ATTR_TEST]);
548 wiphy_dbg(wiphy, "%s: test=%u\n", __func__, val);
549
550 /* Send a vendor event as a test. Note that this would not normally be
551 * done within a command handler, but rather, based on some other
552 * trigger. For simplicity, this command is used to trigger the event
553 * here.
554 *
555 * event_idx = 0 (index in mac80211_hwsim_vendor_commands)
556 */
557 skb = cfg80211_vendor_event_alloc(wiphy, wdev, 100, 0, GFP_KERNEL);
558 if (skb) {
559 /* skb_put() or nla_put() will fill up data within
560 * NL80211_ATTR_VENDOR_DATA.
561 */
562
563 /* Add vendor data */
564 nla_put_u32(skb, QCA_WLAN_VENDOR_ATTR_TEST, val + 1);
565
566 /* Send the event - this will call nla_nest_end() */
567 cfg80211_vendor_event(skb, GFP_KERNEL);
568 }
569
570 /* Send a response to the command */
571 skb = cfg80211_vendor_cmd_alloc_reply_skb(wiphy, 10);
572 if (!skb)
573 return -ENOMEM;
574
575 /* skb_put() or nla_put() will fill up data within
576 * NL80211_ATTR_VENDOR_DATA
577 */
578 nla_put_u32(skb, QCA_WLAN_VENDOR_ATTR_TEST, val + 2);
579
580 return cfg80211_vendor_cmd_reply(skb);
581 }
582
583 static struct wiphy_vendor_command mac80211_hwsim_vendor_commands[] = {
584 {
585 .info = { .vendor_id = OUI_QCA,
586 .subcmd = QCA_NL80211_SUBCMD_TEST },
587 .flags = WIPHY_VENDOR_CMD_NEED_NETDEV,
588 .doit = mac80211_hwsim_vendor_cmd_test,
589 .policy = hwsim_vendor_test_policy,
590 .maxattr = QCA_WLAN_VENDOR_ATTR_MAX,
591 }
592 };
593
594 /* Advertise support vendor specific events */
595 static const struct nl80211_vendor_cmd_info mac80211_hwsim_vendor_events[] = {
596 { .vendor_id = OUI_QCA, .subcmd = 1 },
597 };
598
599 static DEFINE_SPINLOCK(hwsim_radio_lock);
600 static LIST_HEAD(hwsim_radios);
601 static struct rhashtable hwsim_radios_rht;
602 static int hwsim_radio_idx;
603 static int hwsim_radios_generation = 1;
604
605 static struct platform_driver mac80211_hwsim_driver = {
606 .driver = {
607 .name = "mac80211_hwsim",
608 },
609 };
610
611 struct mac80211_hwsim_data {
612 struct list_head list;
613 struct rhash_head rht;
614 struct ieee80211_hw *hw;
615 struct device *dev;
616 struct ieee80211_supported_band bands[NUM_NL80211_BANDS];
617 struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)];
618 struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)];
619 struct ieee80211_channel channels_6ghz[ARRAY_SIZE(hwsim_channels_6ghz)];
620 struct ieee80211_channel channels_s1g[ARRAY_SIZE(hwsim_channels_s1g)];
621 struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
622 struct ieee80211_iface_combination if_combination;
623 struct ieee80211_iface_limit if_limits[3];
624 int n_if_limits;
625
626 u32 ciphers[ARRAY_SIZE(hwsim_ciphers)];
627
628 struct mac_address addresses[2];
629 struct ieee80211_chanctx_conf *chanctx;
630 int channels, idx;
631 bool use_chanctx;
632 bool destroy_on_close;
633 u32 portid;
634 char alpha2[2];
635 const struct ieee80211_regdomain *regd;
636
637 struct ieee80211_channel *tmp_chan;
638 struct ieee80211_channel *roc_chan;
639 u32 roc_duration;
640 struct delayed_work roc_start;
641 struct delayed_work roc_done;
642 struct delayed_work hw_scan;
643 struct cfg80211_scan_request *hw_scan_request;
644 struct ieee80211_vif *hw_scan_vif;
645 int scan_chan_idx;
646 u8 scan_addr[ETH_ALEN];
647 struct {
648 struct ieee80211_channel *channel;
649 unsigned long next_start, start, end;
650 } survey_data[ARRAY_SIZE(hwsim_channels_2ghz) +
651 ARRAY_SIZE(hwsim_channels_5ghz) +
652 ARRAY_SIZE(hwsim_channels_6ghz)];
653
654 struct ieee80211_channel *channel;
655 u64 beacon_int /* beacon interval in us */;
656 unsigned int rx_filter;
657 bool started, idle, scanning;
658 struct mutex mutex;
659 struct hrtimer beacon_timer;
660 enum ps_mode {
661 PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
662 } ps;
663 bool ps_poll_pending;
664 struct dentry *debugfs;
665
666 uintptr_t pending_cookie;
667 struct sk_buff_head pending; /* packets pending */
668 /*
669 * Only radios in the same group can communicate together (the
670 * channel has to match too). Each bit represents a group. A
671 * radio can be in more than one group.
672 */
673 u64 group;
674
675 /* group shared by radios created in the same netns */
676 int netgroup;
677 /* wmediumd portid responsible for netgroup of this radio */
678 u32 wmediumd;
679
680 /* difference between this hw's clock and the real clock, in usecs */
681 s64 tsf_offset;
682 s64 bcn_delta;
683 /* absolute beacon transmission time. Used to cover up "tx" delay. */
684 u64 abs_bcn_ts;
685
686 /* Stats */
687 u64 tx_pkts;
688 u64 rx_pkts;
689 u64 tx_bytes;
690 u64 rx_bytes;
691 u64 tx_dropped;
692 u64 tx_failed;
693 };
694
695 static const struct rhashtable_params hwsim_rht_params = {
696 .nelem_hint = 2,
697 .automatic_shrinking = true,
698 .key_len = ETH_ALEN,
699 .key_offset = offsetof(struct mac80211_hwsim_data, addresses[1]),
700 .head_offset = offsetof(struct mac80211_hwsim_data, rht),
701 };
702
703 struct hwsim_radiotap_hdr {
704 struct ieee80211_radiotap_header hdr;
705 __le64 rt_tsft;
706 u8 rt_flags;
707 u8 rt_rate;
708 __le16 rt_channel;
709 __le16 rt_chbitmask;
710 } __packed;
711
712 struct hwsim_radiotap_ack_hdr {
713 struct ieee80211_radiotap_header hdr;
714 u8 rt_flags;
715 u8 pad;
716 __le16 rt_channel;
717 __le16 rt_chbitmask;
718 } __packed;
719
720 /* MAC80211_HWSIM netlink family */
721 static struct genl_family hwsim_genl_family;
722
723 enum hwsim_multicast_groups {
724 HWSIM_MCGRP_CONFIG,
725 };
726
727 static const struct genl_multicast_group hwsim_mcgrps[] = {
728 [HWSIM_MCGRP_CONFIG] = { .name = "config", },
729 };
730
731 /* MAC80211_HWSIM netlink policy */
732
733 static const struct nla_policy hwsim_genl_policy[HWSIM_ATTR_MAX + 1] = {
734 [HWSIM_ATTR_ADDR_RECEIVER] = NLA_POLICY_ETH_ADDR_COMPAT,
735 [HWSIM_ATTR_ADDR_TRANSMITTER] = NLA_POLICY_ETH_ADDR_COMPAT,
736 [HWSIM_ATTR_FRAME] = { .type = NLA_BINARY,
737 .len = IEEE80211_MAX_DATA_LEN },
738 [HWSIM_ATTR_FLAGS] = { .type = NLA_U32 },
739 [HWSIM_ATTR_RX_RATE] = { .type = NLA_U32 },
740 [HWSIM_ATTR_SIGNAL] = { .type = NLA_U32 },
741 [HWSIM_ATTR_TX_INFO] = { .type = NLA_BINARY,
742 .len = IEEE80211_TX_MAX_RATES *
743 sizeof(struct hwsim_tx_rate)},
744 [HWSIM_ATTR_COOKIE] = { .type = NLA_U64 },
745 [HWSIM_ATTR_CHANNELS] = { .type = NLA_U32 },
746 [HWSIM_ATTR_RADIO_ID] = { .type = NLA_U32 },
747 [HWSIM_ATTR_REG_HINT_ALPHA2] = { .type = NLA_STRING, .len = 2 },
748 [HWSIM_ATTR_REG_CUSTOM_REG] = { .type = NLA_U32 },
749 [HWSIM_ATTR_REG_STRICT_REG] = { .type = NLA_FLAG },
750 [HWSIM_ATTR_SUPPORT_P2P_DEVICE] = { .type = NLA_FLAG },
751 [HWSIM_ATTR_USE_CHANCTX] = { .type = NLA_FLAG },
752 [HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE] = { .type = NLA_FLAG },
753 [HWSIM_ATTR_RADIO_NAME] = { .type = NLA_STRING },
754 [HWSIM_ATTR_NO_VIF] = { .type = NLA_FLAG },
755 [HWSIM_ATTR_FREQ] = { .type = NLA_U32 },
756 [HWSIM_ATTR_TX_INFO_FLAGS] = { .type = NLA_BINARY },
757 [HWSIM_ATTR_PERM_ADDR] = NLA_POLICY_ETH_ADDR_COMPAT,
758 [HWSIM_ATTR_IFTYPE_SUPPORT] = { .type = NLA_U32 },
759 [HWSIM_ATTR_CIPHER_SUPPORT] = { .type = NLA_BINARY },
760 };
761
762 #if IS_REACHABLE(CONFIG_VIRTIO)
763
764 /* MAC80211_HWSIM virtio queues */
765 static struct virtqueue *hwsim_vqs[HWSIM_NUM_VQS];
766 static bool hwsim_virtio_enabled;
767 static DEFINE_SPINLOCK(hwsim_virtio_lock);
768
769 static void hwsim_virtio_rx_work(struct work_struct *work);
770 static DECLARE_WORK(hwsim_virtio_rx, hwsim_virtio_rx_work);
771
hwsim_tx_virtio(struct mac80211_hwsim_data * data,struct sk_buff * skb)772 static int hwsim_tx_virtio(struct mac80211_hwsim_data *data,
773 struct sk_buff *skb)
774 {
775 struct scatterlist sg[1];
776 unsigned long flags;
777 int err;
778
779 spin_lock_irqsave(&hwsim_virtio_lock, flags);
780 if (!hwsim_virtio_enabled) {
781 err = -ENODEV;
782 goto out_free;
783 }
784
785 sg_init_one(sg, skb->head, skb_end_offset(skb));
786 err = virtqueue_add_outbuf(hwsim_vqs[HWSIM_VQ_TX], sg, 1, skb,
787 GFP_ATOMIC);
788 if (err)
789 goto out_free;
790 virtqueue_kick(hwsim_vqs[HWSIM_VQ_TX]);
791 spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
792 return 0;
793
794 out_free:
795 spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
796 nlmsg_free(skb);
797 return err;
798 }
799 #else
800 /* cause a linker error if this ends up being needed */
801 extern int hwsim_tx_virtio(struct mac80211_hwsim_data *data,
802 struct sk_buff *skb);
803 #define hwsim_virtio_enabled false
804 #endif
805
806 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
807 struct sk_buff *skb,
808 struct ieee80211_channel *chan);
809
810 /* sysfs attributes */
hwsim_send_ps_poll(void * dat,u8 * mac,struct ieee80211_vif * vif)811 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
812 {
813 struct mac80211_hwsim_data *data = dat;
814 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
815 struct sk_buff *skb;
816 struct ieee80211_pspoll *pspoll;
817
818 if (!vp->assoc)
819 return;
820
821 wiphy_dbg(data->hw->wiphy,
822 "%s: send PS-Poll to %pM for aid %d\n",
823 __func__, vp->bssid, vp->aid);
824
825 skb = dev_alloc_skb(sizeof(*pspoll));
826 if (!skb)
827 return;
828 pspoll = skb_put(skb, sizeof(*pspoll));
829 pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
830 IEEE80211_STYPE_PSPOLL |
831 IEEE80211_FCTL_PM);
832 pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
833 memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
834 memcpy(pspoll->ta, mac, ETH_ALEN);
835
836 rcu_read_lock();
837 mac80211_hwsim_tx_frame(data->hw, skb,
838 rcu_dereference(vif->chanctx_conf)->def.chan);
839 rcu_read_unlock();
840 }
841
hwsim_send_nullfunc(struct mac80211_hwsim_data * data,u8 * mac,struct ieee80211_vif * vif,int ps)842 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
843 struct ieee80211_vif *vif, int ps)
844 {
845 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
846 struct sk_buff *skb;
847 struct ieee80211_hdr *hdr;
848
849 if (!vp->assoc)
850 return;
851
852 wiphy_dbg(data->hw->wiphy,
853 "%s: send data::nullfunc to %pM ps=%d\n",
854 __func__, vp->bssid, ps);
855
856 skb = dev_alloc_skb(sizeof(*hdr));
857 if (!skb)
858 return;
859 hdr = skb_put(skb, sizeof(*hdr) - ETH_ALEN);
860 hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
861 IEEE80211_STYPE_NULLFUNC |
862 IEEE80211_FCTL_TODS |
863 (ps ? IEEE80211_FCTL_PM : 0));
864 hdr->duration_id = cpu_to_le16(0);
865 memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
866 memcpy(hdr->addr2, mac, ETH_ALEN);
867 memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
868
869 rcu_read_lock();
870 mac80211_hwsim_tx_frame(data->hw, skb,
871 rcu_dereference(vif->chanctx_conf)->def.chan);
872 rcu_read_unlock();
873 }
874
875
hwsim_send_nullfunc_ps(void * dat,u8 * mac,struct ieee80211_vif * vif)876 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
877 struct ieee80211_vif *vif)
878 {
879 struct mac80211_hwsim_data *data = dat;
880 hwsim_send_nullfunc(data, mac, vif, 1);
881 }
882
hwsim_send_nullfunc_no_ps(void * dat,u8 * mac,struct ieee80211_vif * vif)883 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
884 struct ieee80211_vif *vif)
885 {
886 struct mac80211_hwsim_data *data = dat;
887 hwsim_send_nullfunc(data, mac, vif, 0);
888 }
889
hwsim_fops_ps_read(void * dat,u64 * val)890 static int hwsim_fops_ps_read(void *dat, u64 *val)
891 {
892 struct mac80211_hwsim_data *data = dat;
893 *val = data->ps;
894 return 0;
895 }
896
hwsim_fops_ps_write(void * dat,u64 val)897 static int hwsim_fops_ps_write(void *dat, u64 val)
898 {
899 struct mac80211_hwsim_data *data = dat;
900 enum ps_mode old_ps;
901
902 if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
903 val != PS_MANUAL_POLL)
904 return -EINVAL;
905
906 if (val == PS_MANUAL_POLL) {
907 if (data->ps != PS_ENABLED)
908 return -EINVAL;
909 local_bh_disable();
910 ieee80211_iterate_active_interfaces_atomic(
911 data->hw, IEEE80211_IFACE_ITER_NORMAL,
912 hwsim_send_ps_poll, data);
913 local_bh_enable();
914 return 0;
915 }
916 old_ps = data->ps;
917 data->ps = val;
918
919 local_bh_disable();
920 if (old_ps == PS_DISABLED && val != PS_DISABLED) {
921 ieee80211_iterate_active_interfaces_atomic(
922 data->hw, IEEE80211_IFACE_ITER_NORMAL,
923 hwsim_send_nullfunc_ps, data);
924 } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
925 ieee80211_iterate_active_interfaces_atomic(
926 data->hw, IEEE80211_IFACE_ITER_NORMAL,
927 hwsim_send_nullfunc_no_ps, data);
928 }
929 local_bh_enable();
930
931 return 0;
932 }
933
934 DEFINE_DEBUGFS_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
935 "%llu\n");
936
hwsim_write_simulate_radar(void * dat,u64 val)937 static int hwsim_write_simulate_radar(void *dat, u64 val)
938 {
939 struct mac80211_hwsim_data *data = dat;
940
941 ieee80211_radar_detected(data->hw);
942
943 return 0;
944 }
945
946 DEFINE_DEBUGFS_ATTRIBUTE(hwsim_simulate_radar, NULL,
947 hwsim_write_simulate_radar, "%llu\n");
948
hwsim_fops_group_read(void * dat,u64 * val)949 static int hwsim_fops_group_read(void *dat, u64 *val)
950 {
951 struct mac80211_hwsim_data *data = dat;
952 *val = data->group;
953 return 0;
954 }
955
hwsim_fops_group_write(void * dat,u64 val)956 static int hwsim_fops_group_write(void *dat, u64 val)
957 {
958 struct mac80211_hwsim_data *data = dat;
959 data->group = val;
960 return 0;
961 }
962
963 DEFINE_DEBUGFS_ATTRIBUTE(hwsim_fops_group,
964 hwsim_fops_group_read, hwsim_fops_group_write,
965 "%llx\n");
966
hwsim_mon_xmit(struct sk_buff * skb,struct net_device * dev)967 static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
968 struct net_device *dev)
969 {
970 /* TODO: allow packet injection */
971 dev_kfree_skb(skb);
972 return NETDEV_TX_OK;
973 }
974
mac80211_hwsim_get_tsf_raw(void)975 static inline u64 mac80211_hwsim_get_tsf_raw(void)
976 {
977 return ktime_to_us(ktime_get_real());
978 }
979
__mac80211_hwsim_get_tsf(struct mac80211_hwsim_data * data)980 static __le64 __mac80211_hwsim_get_tsf(struct mac80211_hwsim_data *data)
981 {
982 u64 now = mac80211_hwsim_get_tsf_raw();
983 return cpu_to_le64(now + data->tsf_offset);
984 }
985
mac80211_hwsim_get_tsf(struct ieee80211_hw * hw,struct ieee80211_vif * vif)986 static u64 mac80211_hwsim_get_tsf(struct ieee80211_hw *hw,
987 struct ieee80211_vif *vif)
988 {
989 struct mac80211_hwsim_data *data = hw->priv;
990 return le64_to_cpu(__mac80211_hwsim_get_tsf(data));
991 }
992
mac80211_hwsim_set_tsf(struct ieee80211_hw * hw,struct ieee80211_vif * vif,u64 tsf)993 static void mac80211_hwsim_set_tsf(struct ieee80211_hw *hw,
994 struct ieee80211_vif *vif, u64 tsf)
995 {
996 struct mac80211_hwsim_data *data = hw->priv;
997 u64 now = mac80211_hwsim_get_tsf(hw, vif);
998 u32 bcn_int = data->beacon_int;
999 u64 delta = abs(tsf - now);
1000
1001 /* adjust after beaconing with new timestamp at old TBTT */
1002 if (tsf > now) {
1003 data->tsf_offset += delta;
1004 data->bcn_delta = do_div(delta, bcn_int);
1005 } else {
1006 data->tsf_offset -= delta;
1007 data->bcn_delta = -(s64)do_div(delta, bcn_int);
1008 }
1009 }
1010
mac80211_hwsim_monitor_rx(struct ieee80211_hw * hw,struct sk_buff * tx_skb,struct ieee80211_channel * chan)1011 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
1012 struct sk_buff *tx_skb,
1013 struct ieee80211_channel *chan)
1014 {
1015 struct mac80211_hwsim_data *data = hw->priv;
1016 struct sk_buff *skb;
1017 struct hwsim_radiotap_hdr *hdr;
1018 u16 flags, bitrate;
1019 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
1020 struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
1021
1022 if (!txrate)
1023 bitrate = 0;
1024 else
1025 bitrate = txrate->bitrate;
1026
1027 if (!netif_running(hwsim_mon))
1028 return;
1029
1030 skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
1031 if (skb == NULL)
1032 return;
1033
1034 hdr = skb_push(skb, sizeof(*hdr));
1035 hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
1036 hdr->hdr.it_pad = 0;
1037 hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
1038 hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
1039 (1 << IEEE80211_RADIOTAP_RATE) |
1040 (1 << IEEE80211_RADIOTAP_TSFT) |
1041 (1 << IEEE80211_RADIOTAP_CHANNEL));
1042 hdr->rt_tsft = __mac80211_hwsim_get_tsf(data);
1043 hdr->rt_flags = 0;
1044 hdr->rt_rate = bitrate / 5;
1045 hdr->rt_channel = cpu_to_le16(chan->center_freq);
1046 flags = IEEE80211_CHAN_2GHZ;
1047 if (txrate && txrate->flags & IEEE80211_RATE_ERP_G)
1048 flags |= IEEE80211_CHAN_OFDM;
1049 else
1050 flags |= IEEE80211_CHAN_CCK;
1051 hdr->rt_chbitmask = cpu_to_le16(flags);
1052
1053 skb->dev = hwsim_mon;
1054 skb_reset_mac_header(skb);
1055 skb->ip_summed = CHECKSUM_UNNECESSARY;
1056 skb->pkt_type = PACKET_OTHERHOST;
1057 skb->protocol = htons(ETH_P_802_2);
1058 memset(skb->cb, 0, sizeof(skb->cb));
1059 netif_rx(skb);
1060 }
1061
1062
mac80211_hwsim_monitor_ack(struct ieee80211_channel * chan,const u8 * addr)1063 static void mac80211_hwsim_monitor_ack(struct ieee80211_channel *chan,
1064 const u8 *addr)
1065 {
1066 struct sk_buff *skb;
1067 struct hwsim_radiotap_ack_hdr *hdr;
1068 u16 flags;
1069 struct ieee80211_hdr *hdr11;
1070
1071 if (!netif_running(hwsim_mon))
1072 return;
1073
1074 skb = dev_alloc_skb(100);
1075 if (skb == NULL)
1076 return;
1077
1078 hdr = skb_put(skb, sizeof(*hdr));
1079 hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
1080 hdr->hdr.it_pad = 0;
1081 hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
1082 hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
1083 (1 << IEEE80211_RADIOTAP_CHANNEL));
1084 hdr->rt_flags = 0;
1085 hdr->pad = 0;
1086 hdr->rt_channel = cpu_to_le16(chan->center_freq);
1087 flags = IEEE80211_CHAN_2GHZ;
1088 hdr->rt_chbitmask = cpu_to_le16(flags);
1089
1090 hdr11 = skb_put(skb, 10);
1091 hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
1092 IEEE80211_STYPE_ACK);
1093 hdr11->duration_id = cpu_to_le16(0);
1094 memcpy(hdr11->addr1, addr, ETH_ALEN);
1095
1096 skb->dev = hwsim_mon;
1097 skb_reset_mac_header(skb);
1098 skb->ip_summed = CHECKSUM_UNNECESSARY;
1099 skb->pkt_type = PACKET_OTHERHOST;
1100 skb->protocol = htons(ETH_P_802_2);
1101 memset(skb->cb, 0, sizeof(skb->cb));
1102 netif_rx(skb);
1103 }
1104
1105 struct mac80211_hwsim_addr_match_data {
1106 u8 addr[ETH_ALEN];
1107 bool ret;
1108 };
1109
mac80211_hwsim_addr_iter(void * data,u8 * mac,struct ieee80211_vif * vif)1110 static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
1111 struct ieee80211_vif *vif)
1112 {
1113 struct mac80211_hwsim_addr_match_data *md = data;
1114
1115 if (memcmp(mac, md->addr, ETH_ALEN) == 0)
1116 md->ret = true;
1117 }
1118
mac80211_hwsim_addr_match(struct mac80211_hwsim_data * data,const u8 * addr)1119 static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
1120 const u8 *addr)
1121 {
1122 struct mac80211_hwsim_addr_match_data md = {
1123 .ret = false,
1124 };
1125
1126 if (data->scanning && memcmp(addr, data->scan_addr, ETH_ALEN) == 0)
1127 return true;
1128
1129 memcpy(md.addr, addr, ETH_ALEN);
1130
1131 ieee80211_iterate_active_interfaces_atomic(data->hw,
1132 IEEE80211_IFACE_ITER_NORMAL,
1133 mac80211_hwsim_addr_iter,
1134 &md);
1135
1136 return md.ret;
1137 }
1138
hwsim_ps_rx_ok(struct mac80211_hwsim_data * data,struct sk_buff * skb)1139 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
1140 struct sk_buff *skb)
1141 {
1142 switch (data->ps) {
1143 case PS_DISABLED:
1144 return true;
1145 case PS_ENABLED:
1146 return false;
1147 case PS_AUTO_POLL:
1148 /* TODO: accept (some) Beacons by default and other frames only
1149 * if pending PS-Poll has been sent */
1150 return true;
1151 case PS_MANUAL_POLL:
1152 /* Allow unicast frames to own address if there is a pending
1153 * PS-Poll */
1154 if (data->ps_poll_pending &&
1155 mac80211_hwsim_addr_match(data, skb->data + 4)) {
1156 data->ps_poll_pending = false;
1157 return true;
1158 }
1159 return false;
1160 }
1161
1162 return true;
1163 }
1164
hwsim_unicast_netgroup(struct mac80211_hwsim_data * data,struct sk_buff * skb,int portid)1165 static int hwsim_unicast_netgroup(struct mac80211_hwsim_data *data,
1166 struct sk_buff *skb, int portid)
1167 {
1168 struct net *net;
1169 bool found = false;
1170 int res = -ENOENT;
1171
1172 rcu_read_lock();
1173 for_each_net_rcu(net) {
1174 if (data->netgroup == hwsim_net_get_netgroup(net)) {
1175 res = genlmsg_unicast(net, skb, portid);
1176 found = true;
1177 break;
1178 }
1179 }
1180 rcu_read_unlock();
1181
1182 if (!found)
1183 nlmsg_free(skb);
1184
1185 return res;
1186 }
1187
mac80211_hwsim_config_mac_nl(struct ieee80211_hw * hw,const u8 * addr,bool add)1188 static void mac80211_hwsim_config_mac_nl(struct ieee80211_hw *hw,
1189 const u8 *addr, bool add)
1190 {
1191 struct mac80211_hwsim_data *data = hw->priv;
1192 u32 _portid = READ_ONCE(data->wmediumd);
1193 struct sk_buff *skb;
1194 void *msg_head;
1195
1196 if (!_portid && !hwsim_virtio_enabled)
1197 return;
1198
1199 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_ATOMIC);
1200 if (!skb)
1201 return;
1202
1203 msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
1204 add ? HWSIM_CMD_ADD_MAC_ADDR :
1205 HWSIM_CMD_DEL_MAC_ADDR);
1206 if (!msg_head) {
1207 pr_debug("mac80211_hwsim: problem with msg_head\n");
1208 goto nla_put_failure;
1209 }
1210
1211 if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
1212 ETH_ALEN, data->addresses[1].addr))
1213 goto nla_put_failure;
1214
1215 if (nla_put(skb, HWSIM_ATTR_ADDR_RECEIVER, ETH_ALEN, addr))
1216 goto nla_put_failure;
1217
1218 genlmsg_end(skb, msg_head);
1219
1220 if (hwsim_virtio_enabled)
1221 hwsim_tx_virtio(data, skb);
1222 else
1223 hwsim_unicast_netgroup(data, skb, _portid);
1224 return;
1225 nla_put_failure:
1226 nlmsg_free(skb);
1227 }
1228
trans_tx_rate_flags_ieee2hwsim(struct ieee80211_tx_rate * rate)1229 static inline u16 trans_tx_rate_flags_ieee2hwsim(struct ieee80211_tx_rate *rate)
1230 {
1231 u16 result = 0;
1232
1233 if (rate->flags & IEEE80211_TX_RC_USE_RTS_CTS)
1234 result |= MAC80211_HWSIM_TX_RC_USE_RTS_CTS;
1235 if (rate->flags & IEEE80211_TX_RC_USE_CTS_PROTECT)
1236 result |= MAC80211_HWSIM_TX_RC_USE_CTS_PROTECT;
1237 if (rate->flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE)
1238 result |= MAC80211_HWSIM_TX_RC_USE_SHORT_PREAMBLE;
1239 if (rate->flags & IEEE80211_TX_RC_MCS)
1240 result |= MAC80211_HWSIM_TX_RC_MCS;
1241 if (rate->flags & IEEE80211_TX_RC_GREEN_FIELD)
1242 result |= MAC80211_HWSIM_TX_RC_GREEN_FIELD;
1243 if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
1244 result |= MAC80211_HWSIM_TX_RC_40_MHZ_WIDTH;
1245 if (rate->flags & IEEE80211_TX_RC_DUP_DATA)
1246 result |= MAC80211_HWSIM_TX_RC_DUP_DATA;
1247 if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
1248 result |= MAC80211_HWSIM_TX_RC_SHORT_GI;
1249 if (rate->flags & IEEE80211_TX_RC_VHT_MCS)
1250 result |= MAC80211_HWSIM_TX_RC_VHT_MCS;
1251 if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
1252 result |= MAC80211_HWSIM_TX_RC_80_MHZ_WIDTH;
1253 if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
1254 result |= MAC80211_HWSIM_TX_RC_160_MHZ_WIDTH;
1255
1256 return result;
1257 }
1258
mac80211_hwsim_tx_frame_nl(struct ieee80211_hw * hw,struct sk_buff * my_skb,int dst_portid,struct ieee80211_channel * channel)1259 static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
1260 struct sk_buff *my_skb,
1261 int dst_portid,
1262 struct ieee80211_channel *channel)
1263 {
1264 struct sk_buff *skb;
1265 struct mac80211_hwsim_data *data = hw->priv;
1266 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) my_skb->data;
1267 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(my_skb);
1268 void *msg_head;
1269 unsigned int hwsim_flags = 0;
1270 int i;
1271 struct hwsim_tx_rate tx_attempts[IEEE80211_TX_MAX_RATES];
1272 struct hwsim_tx_rate_flag tx_attempts_flags[IEEE80211_TX_MAX_RATES];
1273 uintptr_t cookie;
1274
1275 if (data->ps != PS_DISABLED)
1276 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1277 /* If the queue contains MAX_QUEUE skb's drop some */
1278 if (skb_queue_len(&data->pending) >= MAX_QUEUE) {
1279 /* Droping until WARN_QUEUE level */
1280 while (skb_queue_len(&data->pending) >= WARN_QUEUE) {
1281 ieee80211_free_txskb(hw, skb_dequeue(&data->pending));
1282 data->tx_dropped++;
1283 }
1284 }
1285
1286 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_ATOMIC);
1287 if (skb == NULL)
1288 goto nla_put_failure;
1289
1290 msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
1291 HWSIM_CMD_FRAME);
1292 if (msg_head == NULL) {
1293 pr_debug("mac80211_hwsim: problem with msg_head\n");
1294 goto nla_put_failure;
1295 }
1296
1297 if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
1298 ETH_ALEN, data->addresses[1].addr))
1299 goto nla_put_failure;
1300
1301 /* We get the skb->data */
1302 if (nla_put(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data))
1303 goto nla_put_failure;
1304
1305 /* We get the flags for this transmission, and we translate them to
1306 wmediumd flags */
1307
1308 if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
1309 hwsim_flags |= HWSIM_TX_CTL_REQ_TX_STATUS;
1310
1311 if (info->flags & IEEE80211_TX_CTL_NO_ACK)
1312 hwsim_flags |= HWSIM_TX_CTL_NO_ACK;
1313
1314 if (nla_put_u32(skb, HWSIM_ATTR_FLAGS, hwsim_flags))
1315 goto nla_put_failure;
1316
1317 if (nla_put_u32(skb, HWSIM_ATTR_FREQ, channel->center_freq))
1318 goto nla_put_failure;
1319
1320 /* We get the tx control (rate and retries) info*/
1321
1322 for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
1323 tx_attempts[i].idx = info->status.rates[i].idx;
1324 tx_attempts_flags[i].idx = info->status.rates[i].idx;
1325 tx_attempts[i].count = info->status.rates[i].count;
1326 tx_attempts_flags[i].flags =
1327 trans_tx_rate_flags_ieee2hwsim(
1328 &info->status.rates[i]);
1329 }
1330
1331 if (nla_put(skb, HWSIM_ATTR_TX_INFO,
1332 sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
1333 tx_attempts))
1334 goto nla_put_failure;
1335
1336 if (nla_put(skb, HWSIM_ATTR_TX_INFO_FLAGS,
1337 sizeof(struct hwsim_tx_rate_flag) * IEEE80211_TX_MAX_RATES,
1338 tx_attempts_flags))
1339 goto nla_put_failure;
1340
1341 /* We create a cookie to identify this skb */
1342 data->pending_cookie++;
1343 cookie = data->pending_cookie;
1344 info->rate_driver_data[0] = (void *)cookie;
1345 if (nla_put_u64_64bit(skb, HWSIM_ATTR_COOKIE, cookie, HWSIM_ATTR_PAD))
1346 goto nla_put_failure;
1347
1348 genlmsg_end(skb, msg_head);
1349
1350 if (hwsim_virtio_enabled) {
1351 if (hwsim_tx_virtio(data, skb))
1352 goto err_free_txskb;
1353 } else {
1354 if (hwsim_unicast_netgroup(data, skb, dst_portid))
1355 goto err_free_txskb;
1356 }
1357
1358 /* Enqueue the packet */
1359 skb_queue_tail(&data->pending, my_skb);
1360 data->tx_pkts++;
1361 data->tx_bytes += my_skb->len;
1362 return;
1363
1364 nla_put_failure:
1365 nlmsg_free(skb);
1366 err_free_txskb:
1367 pr_debug("mac80211_hwsim: error occurred in %s\n", __func__);
1368 ieee80211_free_txskb(hw, my_skb);
1369 data->tx_failed++;
1370 }
1371
hwsim_chans_compat(struct ieee80211_channel * c1,struct ieee80211_channel * c2)1372 static bool hwsim_chans_compat(struct ieee80211_channel *c1,
1373 struct ieee80211_channel *c2)
1374 {
1375 if (!c1 || !c2)
1376 return false;
1377
1378 return c1->center_freq == c2->center_freq;
1379 }
1380
1381 struct tx_iter_data {
1382 struct ieee80211_channel *channel;
1383 bool receive;
1384 };
1385
mac80211_hwsim_tx_iter(void * _data,u8 * addr,struct ieee80211_vif * vif)1386 static void mac80211_hwsim_tx_iter(void *_data, u8 *addr,
1387 struct ieee80211_vif *vif)
1388 {
1389 struct tx_iter_data *data = _data;
1390
1391 if (!vif->chanctx_conf)
1392 return;
1393
1394 if (!hwsim_chans_compat(data->channel,
1395 rcu_dereference(vif->chanctx_conf)->def.chan))
1396 return;
1397
1398 data->receive = true;
1399 }
1400
mac80211_hwsim_add_vendor_rtap(struct sk_buff * skb)1401 static void mac80211_hwsim_add_vendor_rtap(struct sk_buff *skb)
1402 {
1403 /*
1404 * To enable this code, #define the HWSIM_RADIOTAP_OUI,
1405 * e.g. like this:
1406 * #define HWSIM_RADIOTAP_OUI "\x02\x00\x00"
1407 * (but you should use a valid OUI, not that)
1408 *
1409 * If anyone wants to 'donate' a radiotap OUI/subns code
1410 * please send a patch removing this #ifdef and changing
1411 * the values accordingly.
1412 */
1413 #ifdef HWSIM_RADIOTAP_OUI
1414 struct ieee80211_vendor_radiotap *rtap;
1415
1416 /*
1417 * Note that this code requires the headroom in the SKB
1418 * that was allocated earlier.
1419 */
1420 rtap = skb_push(skb, sizeof(*rtap) + 8 + 4);
1421 rtap->oui[0] = HWSIM_RADIOTAP_OUI[0];
1422 rtap->oui[1] = HWSIM_RADIOTAP_OUI[1];
1423 rtap->oui[2] = HWSIM_RADIOTAP_OUI[2];
1424 rtap->subns = 127;
1425
1426 /*
1427 * Radiotap vendor namespaces can (and should) also be
1428 * split into fields by using the standard radiotap
1429 * presence bitmap mechanism. Use just BIT(0) here for
1430 * the presence bitmap.
1431 */
1432 rtap->present = BIT(0);
1433 /* We have 8 bytes of (dummy) data */
1434 rtap->len = 8;
1435 /* For testing, also require it to be aligned */
1436 rtap->align = 8;
1437 /* And also test that padding works, 4 bytes */
1438 rtap->pad = 4;
1439 /* push the data */
1440 memcpy(rtap->data, "ABCDEFGH", 8);
1441 /* make sure to clear padding, mac80211 doesn't */
1442 memset(rtap->data + 8, 0, 4);
1443
1444 IEEE80211_SKB_RXCB(skb)->flag |= RX_FLAG_RADIOTAP_VENDOR_DATA;
1445 #endif
1446 }
1447
mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw * hw,struct sk_buff * skb,struct ieee80211_channel * chan)1448 static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
1449 struct sk_buff *skb,
1450 struct ieee80211_channel *chan)
1451 {
1452 struct mac80211_hwsim_data *data = hw->priv, *data2;
1453 bool ack = false;
1454 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1455 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1456 struct ieee80211_rx_status rx_status;
1457 u64 now;
1458
1459 memset(&rx_status, 0, sizeof(rx_status));
1460 rx_status.flag |= RX_FLAG_MACTIME_START;
1461 rx_status.freq = chan->center_freq;
1462 rx_status.freq_offset = chan->freq_offset ? 1 : 0;
1463 rx_status.band = chan->band;
1464 if (info->control.rates[0].flags & IEEE80211_TX_RC_VHT_MCS) {
1465 rx_status.rate_idx =
1466 ieee80211_rate_get_vht_mcs(&info->control.rates[0]);
1467 rx_status.nss =
1468 ieee80211_rate_get_vht_nss(&info->control.rates[0]);
1469 rx_status.encoding = RX_ENC_VHT;
1470 } else {
1471 rx_status.rate_idx = info->control.rates[0].idx;
1472 if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
1473 rx_status.encoding = RX_ENC_HT;
1474 }
1475 if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
1476 rx_status.bw = RATE_INFO_BW_40;
1477 else if (info->control.rates[0].flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
1478 rx_status.bw = RATE_INFO_BW_80;
1479 else if (info->control.rates[0].flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
1480 rx_status.bw = RATE_INFO_BW_160;
1481 else
1482 rx_status.bw = RATE_INFO_BW_20;
1483 if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
1484 rx_status.enc_flags |= RX_ENC_FLAG_SHORT_GI;
1485 /* TODO: simulate real signal strength (and optional packet loss) */
1486 rx_status.signal = -50;
1487 if (info->control.vif)
1488 rx_status.signal += info->control.vif->bss_conf.txpower;
1489
1490 if (data->ps != PS_DISABLED)
1491 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1492
1493 /* release the skb's source info */
1494 skb_orphan(skb);
1495 skb_dst_drop(skb);
1496 skb->mark = 0;
1497 skb_ext_reset(skb);
1498 nf_reset_ct(skb);
1499
1500 /*
1501 * Get absolute mactime here so all HWs RX at the "same time", and
1502 * absolute TX time for beacon mactime so the timestamp matches.
1503 * Giving beacons a different mactime than non-beacons looks messy, but
1504 * it helps the Toffset be exact and a ~10us mactime discrepancy
1505 * probably doesn't really matter.
1506 */
1507 if (ieee80211_is_beacon(hdr->frame_control) ||
1508 ieee80211_is_probe_resp(hdr->frame_control)) {
1509 rx_status.boottime_ns = ktime_get_boottime_ns();
1510 now = data->abs_bcn_ts;
1511 } else {
1512 now = mac80211_hwsim_get_tsf_raw();
1513 }
1514
1515 /* Copy skb to all enabled radios that are on the current frequency */
1516 spin_lock(&hwsim_radio_lock);
1517 list_for_each_entry(data2, &hwsim_radios, list) {
1518 struct sk_buff *nskb;
1519 struct tx_iter_data tx_iter_data = {
1520 .receive = false,
1521 .channel = chan,
1522 };
1523
1524 if (data == data2)
1525 continue;
1526
1527 if (!data2->started || (data2->idle && !data2->tmp_chan) ||
1528 !hwsim_ps_rx_ok(data2, skb))
1529 continue;
1530
1531 if (!(data->group & data2->group))
1532 continue;
1533
1534 if (data->netgroup != data2->netgroup)
1535 continue;
1536
1537 if (!hwsim_chans_compat(chan, data2->tmp_chan) &&
1538 !hwsim_chans_compat(chan, data2->channel)) {
1539 ieee80211_iterate_active_interfaces_atomic(
1540 data2->hw, IEEE80211_IFACE_ITER_NORMAL,
1541 mac80211_hwsim_tx_iter, &tx_iter_data);
1542 if (!tx_iter_data.receive)
1543 continue;
1544 }
1545
1546 /*
1547 * reserve some space for our vendor and the normal
1548 * radiotap header, since we're copying anyway
1549 */
1550 if (skb->len < PAGE_SIZE && paged_rx) {
1551 struct page *page = alloc_page(GFP_ATOMIC);
1552
1553 if (!page)
1554 continue;
1555
1556 nskb = dev_alloc_skb(128);
1557 if (!nskb) {
1558 __free_page(page);
1559 continue;
1560 }
1561
1562 memcpy(page_address(page), skb->data, skb->len);
1563 skb_add_rx_frag(nskb, 0, page, 0, skb->len, skb->len);
1564 } else {
1565 nskb = skb_copy(skb, GFP_ATOMIC);
1566 if (!nskb)
1567 continue;
1568 }
1569
1570 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
1571 ack = true;
1572
1573 rx_status.mactime = now + data2->tsf_offset;
1574
1575 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
1576
1577 mac80211_hwsim_add_vendor_rtap(nskb);
1578
1579 data2->rx_pkts++;
1580 data2->rx_bytes += nskb->len;
1581 ieee80211_rx_irqsafe(data2->hw, nskb);
1582 }
1583 spin_unlock(&hwsim_radio_lock);
1584
1585 return ack;
1586 }
1587
mac80211_hwsim_tx(struct ieee80211_hw * hw,struct ieee80211_tx_control * control,struct sk_buff * skb)1588 static void mac80211_hwsim_tx(struct ieee80211_hw *hw,
1589 struct ieee80211_tx_control *control,
1590 struct sk_buff *skb)
1591 {
1592 struct mac80211_hwsim_data *data = hw->priv;
1593 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1594 struct ieee80211_hdr *hdr = (void *)skb->data;
1595 struct ieee80211_chanctx_conf *chanctx_conf;
1596 struct ieee80211_channel *channel;
1597 bool ack;
1598 u32 _portid;
1599
1600 if (WARN_ON(skb->len < 10)) {
1601 /* Should not happen; just a sanity check for addr1 use */
1602 ieee80211_free_txskb(hw, skb);
1603 return;
1604 }
1605
1606 if (!data->use_chanctx) {
1607 channel = data->channel;
1608 } else if (txi->hw_queue == 4) {
1609 channel = data->tmp_chan;
1610 } else {
1611 chanctx_conf = rcu_dereference(txi->control.vif->chanctx_conf);
1612 if (chanctx_conf)
1613 channel = chanctx_conf->def.chan;
1614 else
1615 channel = NULL;
1616 }
1617
1618 if (WARN(!channel, "TX w/o channel - queue = %d\n", txi->hw_queue)) {
1619 ieee80211_free_txskb(hw, skb);
1620 return;
1621 }
1622
1623 if (data->idle && !data->tmp_chan) {
1624 wiphy_dbg(hw->wiphy, "Trying to TX when idle - reject\n");
1625 ieee80211_free_txskb(hw, skb);
1626 return;
1627 }
1628
1629 if (txi->control.vif)
1630 hwsim_check_magic(txi->control.vif);
1631 if (control->sta)
1632 hwsim_check_sta_magic(control->sta);
1633
1634 if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE))
1635 ieee80211_get_tx_rates(txi->control.vif, control->sta, skb,
1636 txi->control.rates,
1637 ARRAY_SIZE(txi->control.rates));
1638
1639 if (skb->len >= 24 + 8 &&
1640 ieee80211_is_probe_resp(hdr->frame_control)) {
1641 /* fake header transmission time */
1642 struct ieee80211_mgmt *mgmt;
1643 struct ieee80211_rate *txrate;
1644 /* TODO: get MCS */
1645 int bitrate = 100;
1646 u64 ts;
1647
1648 mgmt = (struct ieee80211_mgmt *)skb->data;
1649 txrate = ieee80211_get_tx_rate(hw, txi);
1650 if (txrate)
1651 bitrate = txrate->bitrate;
1652 ts = mac80211_hwsim_get_tsf_raw();
1653 mgmt->u.probe_resp.timestamp =
1654 cpu_to_le64(ts + data->tsf_offset +
1655 24 * 8 * 10 / bitrate);
1656 }
1657
1658 mac80211_hwsim_monitor_rx(hw, skb, channel);
1659
1660 /* wmediumd mode check */
1661 _portid = READ_ONCE(data->wmediumd);
1662
1663 if (_portid || hwsim_virtio_enabled)
1664 return mac80211_hwsim_tx_frame_nl(hw, skb, _portid, channel);
1665
1666 /* NO wmediumd detected, perfect medium simulation */
1667 data->tx_pkts++;
1668 data->tx_bytes += skb->len;
1669 ack = mac80211_hwsim_tx_frame_no_nl(hw, skb, channel);
1670
1671 if (ack && skb->len >= 16)
1672 mac80211_hwsim_monitor_ack(channel, hdr->addr2);
1673
1674 ieee80211_tx_info_clear_status(txi);
1675
1676 /* frame was transmitted at most favorable rate at first attempt */
1677 txi->control.rates[0].count = 1;
1678 txi->control.rates[1].idx = -1;
1679
1680 if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
1681 txi->flags |= IEEE80211_TX_STAT_ACK;
1682 ieee80211_tx_status_irqsafe(hw, skb);
1683 }
1684
1685
mac80211_hwsim_start(struct ieee80211_hw * hw)1686 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
1687 {
1688 struct mac80211_hwsim_data *data = hw->priv;
1689 wiphy_dbg(hw->wiphy, "%s\n", __func__);
1690 data->started = true;
1691 return 0;
1692 }
1693
1694
mac80211_hwsim_stop(struct ieee80211_hw * hw)1695 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
1696 {
1697 struct mac80211_hwsim_data *data = hw->priv;
1698
1699 data->started = false;
1700 hrtimer_cancel(&data->beacon_timer);
1701
1702 while (!skb_queue_empty(&data->pending))
1703 ieee80211_free_txskb(hw, skb_dequeue(&data->pending));
1704
1705 wiphy_dbg(hw->wiphy, "%s\n", __func__);
1706 }
1707
1708
mac80211_hwsim_add_interface(struct ieee80211_hw * hw,struct ieee80211_vif * vif)1709 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
1710 struct ieee80211_vif *vif)
1711 {
1712 wiphy_dbg(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1713 __func__, ieee80211_vif_type_p2p(vif),
1714 vif->addr);
1715 hwsim_set_magic(vif);
1716
1717 if (vif->type != NL80211_IFTYPE_MONITOR)
1718 mac80211_hwsim_config_mac_nl(hw, vif->addr, true);
1719
1720 vif->cab_queue = 0;
1721 vif->hw_queue[IEEE80211_AC_VO] = 0;
1722 vif->hw_queue[IEEE80211_AC_VI] = 1;
1723 vif->hw_queue[IEEE80211_AC_BE] = 2;
1724 vif->hw_queue[IEEE80211_AC_BK] = 3;
1725
1726 return 0;
1727 }
1728
1729
mac80211_hwsim_change_interface(struct ieee80211_hw * hw,struct ieee80211_vif * vif,enum nl80211_iftype newtype,bool newp2p)1730 static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
1731 struct ieee80211_vif *vif,
1732 enum nl80211_iftype newtype,
1733 bool newp2p)
1734 {
1735 newtype = ieee80211_iftype_p2p(newtype, newp2p);
1736 wiphy_dbg(hw->wiphy,
1737 "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
1738 __func__, ieee80211_vif_type_p2p(vif),
1739 newtype, vif->addr);
1740 hwsim_check_magic(vif);
1741
1742 /*
1743 * interface may change from non-AP to AP in
1744 * which case this needs to be set up again
1745 */
1746 vif->cab_queue = 0;
1747
1748 return 0;
1749 }
1750
mac80211_hwsim_remove_interface(struct ieee80211_hw * hw,struct ieee80211_vif * vif)1751 static void mac80211_hwsim_remove_interface(
1752 struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1753 {
1754 wiphy_dbg(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1755 __func__, ieee80211_vif_type_p2p(vif),
1756 vif->addr);
1757 hwsim_check_magic(vif);
1758 hwsim_clear_magic(vif);
1759 if (vif->type != NL80211_IFTYPE_MONITOR)
1760 mac80211_hwsim_config_mac_nl(hw, vif->addr, false);
1761 }
1762
mac80211_hwsim_tx_frame(struct ieee80211_hw * hw,struct sk_buff * skb,struct ieee80211_channel * chan)1763 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
1764 struct sk_buff *skb,
1765 struct ieee80211_channel *chan)
1766 {
1767 struct mac80211_hwsim_data *data = hw->priv;
1768 u32 _pid = READ_ONCE(data->wmediumd);
1769
1770 if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE)) {
1771 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1772 ieee80211_get_tx_rates(txi->control.vif, NULL, skb,
1773 txi->control.rates,
1774 ARRAY_SIZE(txi->control.rates));
1775 }
1776
1777 mac80211_hwsim_monitor_rx(hw, skb, chan);
1778
1779 if (_pid || hwsim_virtio_enabled)
1780 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid, chan);
1781
1782 data->tx_pkts++;
1783 data->tx_bytes += skb->len;
1784 mac80211_hwsim_tx_frame_no_nl(hw, skb, chan);
1785 dev_kfree_skb(skb);
1786 }
1787
mac80211_hwsim_beacon_tx(void * arg,u8 * mac,struct ieee80211_vif * vif)1788 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
1789 struct ieee80211_vif *vif)
1790 {
1791 struct mac80211_hwsim_data *data = arg;
1792 struct ieee80211_hw *hw = data->hw;
1793 struct ieee80211_tx_info *info;
1794 struct ieee80211_rate *txrate;
1795 struct ieee80211_mgmt *mgmt;
1796 struct sk_buff *skb;
1797 /* TODO: get MCS */
1798 int bitrate = 100;
1799
1800 hwsim_check_magic(vif);
1801
1802 if (vif->type != NL80211_IFTYPE_AP &&
1803 vif->type != NL80211_IFTYPE_MESH_POINT &&
1804 vif->type != NL80211_IFTYPE_ADHOC &&
1805 vif->type != NL80211_IFTYPE_OCB)
1806 return;
1807
1808 skb = ieee80211_beacon_get(hw, vif);
1809 if (skb == NULL)
1810 return;
1811 info = IEEE80211_SKB_CB(skb);
1812 if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE))
1813 ieee80211_get_tx_rates(vif, NULL, skb,
1814 info->control.rates,
1815 ARRAY_SIZE(info->control.rates));
1816
1817 txrate = ieee80211_get_tx_rate(hw, info);
1818 if (txrate)
1819 bitrate = txrate->bitrate;
1820
1821 mgmt = (struct ieee80211_mgmt *) skb->data;
1822 /* fake header transmission time */
1823 data->abs_bcn_ts = mac80211_hwsim_get_tsf_raw();
1824 if (ieee80211_is_s1g_beacon(mgmt->frame_control)) {
1825 struct ieee80211_ext *ext = (void *) mgmt;
1826
1827 ext->u.s1g_beacon.timestamp = cpu_to_le32(data->abs_bcn_ts +
1828 data->tsf_offset +
1829 10 * 8 * 10 /
1830 bitrate);
1831 } else {
1832 mgmt->u.beacon.timestamp = cpu_to_le64(data->abs_bcn_ts +
1833 data->tsf_offset +
1834 24 * 8 * 10 /
1835 bitrate);
1836 }
1837
1838 mac80211_hwsim_tx_frame(hw, skb,
1839 rcu_dereference(vif->chanctx_conf)->def.chan);
1840
1841 while ((skb = ieee80211_get_buffered_bc(hw, vif)) != NULL) {
1842 mac80211_hwsim_tx_frame(hw, skb,
1843 rcu_dereference(vif->chanctx_conf)->def.chan);
1844 }
1845
1846 if (vif->csa_active && ieee80211_beacon_cntdwn_is_complete(vif))
1847 ieee80211_csa_finish(vif);
1848 }
1849
1850 static enum hrtimer_restart
mac80211_hwsim_beacon(struct hrtimer * timer)1851 mac80211_hwsim_beacon(struct hrtimer *timer)
1852 {
1853 struct mac80211_hwsim_data *data =
1854 container_of(timer, struct mac80211_hwsim_data, beacon_timer);
1855 struct ieee80211_hw *hw = data->hw;
1856 u64 bcn_int = data->beacon_int;
1857
1858 if (!data->started)
1859 return HRTIMER_NORESTART;
1860
1861 ieee80211_iterate_active_interfaces_atomic(
1862 hw, IEEE80211_IFACE_ITER_NORMAL,
1863 mac80211_hwsim_beacon_tx, data);
1864
1865 /* beacon at new TBTT + beacon interval */
1866 if (data->bcn_delta) {
1867 bcn_int -= data->bcn_delta;
1868 data->bcn_delta = 0;
1869 }
1870 hrtimer_forward_now(&data->beacon_timer,
1871 ns_to_ktime(bcn_int * NSEC_PER_USEC));
1872 return HRTIMER_RESTART;
1873 }
1874
1875 static const char * const hwsim_chanwidths[] = {
1876 [NL80211_CHAN_WIDTH_5] = "ht5",
1877 [NL80211_CHAN_WIDTH_10] = "ht10",
1878 [NL80211_CHAN_WIDTH_20_NOHT] = "noht",
1879 [NL80211_CHAN_WIDTH_20] = "ht20",
1880 [NL80211_CHAN_WIDTH_40] = "ht40",
1881 [NL80211_CHAN_WIDTH_80] = "vht80",
1882 [NL80211_CHAN_WIDTH_80P80] = "vht80p80",
1883 [NL80211_CHAN_WIDTH_160] = "vht160",
1884 [NL80211_CHAN_WIDTH_1] = "1MHz",
1885 [NL80211_CHAN_WIDTH_2] = "2MHz",
1886 [NL80211_CHAN_WIDTH_4] = "4MHz",
1887 [NL80211_CHAN_WIDTH_8] = "8MHz",
1888 [NL80211_CHAN_WIDTH_16] = "16MHz",
1889 };
1890
mac80211_hwsim_config(struct ieee80211_hw * hw,u32 changed)1891 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
1892 {
1893 struct mac80211_hwsim_data *data = hw->priv;
1894 struct ieee80211_conf *conf = &hw->conf;
1895 static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
1896 [IEEE80211_SMPS_AUTOMATIC] = "auto",
1897 [IEEE80211_SMPS_OFF] = "off",
1898 [IEEE80211_SMPS_STATIC] = "static",
1899 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
1900 };
1901 int idx;
1902
1903 if (conf->chandef.chan)
1904 wiphy_dbg(hw->wiphy,
1905 "%s (freq=%d(%d - %d)/%s idle=%d ps=%d smps=%s)\n",
1906 __func__,
1907 conf->chandef.chan->center_freq,
1908 conf->chandef.center_freq1,
1909 conf->chandef.center_freq2,
1910 hwsim_chanwidths[conf->chandef.width],
1911 !!(conf->flags & IEEE80211_CONF_IDLE),
1912 !!(conf->flags & IEEE80211_CONF_PS),
1913 smps_modes[conf->smps_mode]);
1914 else
1915 wiphy_dbg(hw->wiphy,
1916 "%s (freq=0 idle=%d ps=%d smps=%s)\n",
1917 __func__,
1918 !!(conf->flags & IEEE80211_CONF_IDLE),
1919 !!(conf->flags & IEEE80211_CONF_PS),
1920 smps_modes[conf->smps_mode]);
1921
1922 data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
1923
1924 WARN_ON(conf->chandef.chan && data->use_chanctx);
1925
1926 mutex_lock(&data->mutex);
1927 if (data->scanning && conf->chandef.chan) {
1928 for (idx = 0; idx < ARRAY_SIZE(data->survey_data); idx++) {
1929 if (data->survey_data[idx].channel == data->channel) {
1930 data->survey_data[idx].start =
1931 data->survey_data[idx].next_start;
1932 data->survey_data[idx].end = jiffies;
1933 break;
1934 }
1935 }
1936
1937 data->channel = conf->chandef.chan;
1938
1939 for (idx = 0; idx < ARRAY_SIZE(data->survey_data); idx++) {
1940 if (data->survey_data[idx].channel &&
1941 data->survey_data[idx].channel != data->channel)
1942 continue;
1943 data->survey_data[idx].channel = data->channel;
1944 data->survey_data[idx].next_start = jiffies;
1945 break;
1946 }
1947 } else {
1948 data->channel = conf->chandef.chan;
1949 }
1950 mutex_unlock(&data->mutex);
1951
1952 if (!data->started || !data->beacon_int)
1953 hrtimer_cancel(&data->beacon_timer);
1954 else if (!hrtimer_is_queued(&data->beacon_timer)) {
1955 u64 tsf = mac80211_hwsim_get_tsf(hw, NULL);
1956 u32 bcn_int = data->beacon_int;
1957 u64 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1958
1959 hrtimer_start(&data->beacon_timer,
1960 ns_to_ktime(until_tbtt * NSEC_PER_USEC),
1961 HRTIMER_MODE_REL_SOFT);
1962 }
1963
1964 return 0;
1965 }
1966
1967
mac80211_hwsim_configure_filter(struct ieee80211_hw * hw,unsigned int changed_flags,unsigned int * total_flags,u64 multicast)1968 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
1969 unsigned int changed_flags,
1970 unsigned int *total_flags,u64 multicast)
1971 {
1972 struct mac80211_hwsim_data *data = hw->priv;
1973
1974 wiphy_dbg(hw->wiphy, "%s\n", __func__);
1975
1976 data->rx_filter = 0;
1977 if (*total_flags & FIF_ALLMULTI)
1978 data->rx_filter |= FIF_ALLMULTI;
1979 if (*total_flags & FIF_MCAST_ACTION)
1980 data->rx_filter |= FIF_MCAST_ACTION;
1981
1982 *total_flags = data->rx_filter;
1983 }
1984
mac80211_hwsim_bcn_en_iter(void * data,u8 * mac,struct ieee80211_vif * vif)1985 static void mac80211_hwsim_bcn_en_iter(void *data, u8 *mac,
1986 struct ieee80211_vif *vif)
1987 {
1988 unsigned int *count = data;
1989 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1990
1991 if (vp->bcn_en)
1992 (*count)++;
1993 }
1994
mac80211_hwsim_bss_info_changed(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_bss_conf * info,u32 changed)1995 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
1996 struct ieee80211_vif *vif,
1997 struct ieee80211_bss_conf *info,
1998 u32 changed)
1999 {
2000 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
2001 struct mac80211_hwsim_data *data = hw->priv;
2002
2003 hwsim_check_magic(vif);
2004
2005 wiphy_dbg(hw->wiphy, "%s(changed=0x%x vif->addr=%pM)\n",
2006 __func__, changed, vif->addr);
2007
2008 if (changed & BSS_CHANGED_BSSID) {
2009 wiphy_dbg(hw->wiphy, "%s: BSSID changed: %pM\n",
2010 __func__, info->bssid);
2011 memcpy(vp->bssid, info->bssid, ETH_ALEN);
2012 }
2013
2014 if (changed & BSS_CHANGED_ASSOC) {
2015 wiphy_dbg(hw->wiphy, " ASSOC: assoc=%d aid=%d\n",
2016 info->assoc, info->aid);
2017 vp->assoc = info->assoc;
2018 vp->aid = info->aid;
2019 }
2020
2021 if (changed & BSS_CHANGED_BEACON_ENABLED) {
2022 wiphy_dbg(hw->wiphy, " BCN EN: %d (BI=%u)\n",
2023 info->enable_beacon, info->beacon_int);
2024 vp->bcn_en = info->enable_beacon;
2025 if (data->started &&
2026 !hrtimer_is_queued(&data->beacon_timer) &&
2027 info->enable_beacon) {
2028 u64 tsf, until_tbtt;
2029 u32 bcn_int;
2030 data->beacon_int = info->beacon_int * 1024;
2031 tsf = mac80211_hwsim_get_tsf(hw, vif);
2032 bcn_int = data->beacon_int;
2033 until_tbtt = bcn_int - do_div(tsf, bcn_int);
2034
2035 hrtimer_start(&data->beacon_timer,
2036 ns_to_ktime(until_tbtt * NSEC_PER_USEC),
2037 HRTIMER_MODE_REL_SOFT);
2038 } else if (!info->enable_beacon) {
2039 unsigned int count = 0;
2040 ieee80211_iterate_active_interfaces_atomic(
2041 data->hw, IEEE80211_IFACE_ITER_NORMAL,
2042 mac80211_hwsim_bcn_en_iter, &count);
2043 wiphy_dbg(hw->wiphy, " beaconing vifs remaining: %u",
2044 count);
2045 if (count == 0) {
2046 hrtimer_cancel(&data->beacon_timer);
2047 data->beacon_int = 0;
2048 }
2049 }
2050 }
2051
2052 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
2053 wiphy_dbg(hw->wiphy, " ERP_CTS_PROT: %d\n",
2054 info->use_cts_prot);
2055 }
2056
2057 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
2058 wiphy_dbg(hw->wiphy, " ERP_PREAMBLE: %d\n",
2059 info->use_short_preamble);
2060 }
2061
2062 if (changed & BSS_CHANGED_ERP_SLOT) {
2063 wiphy_dbg(hw->wiphy, " ERP_SLOT: %d\n", info->use_short_slot);
2064 }
2065
2066 if (changed & BSS_CHANGED_HT) {
2067 wiphy_dbg(hw->wiphy, " HT: op_mode=0x%x\n",
2068 info->ht_operation_mode);
2069 }
2070
2071 if (changed & BSS_CHANGED_BASIC_RATES) {
2072 wiphy_dbg(hw->wiphy, " BASIC_RATES: 0x%llx\n",
2073 (unsigned long long) info->basic_rates);
2074 }
2075
2076 if (changed & BSS_CHANGED_TXPOWER)
2077 wiphy_dbg(hw->wiphy, " TX Power: %d dBm\n", info->txpower);
2078 }
2079
mac80211_hwsim_sta_add(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta)2080 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
2081 struct ieee80211_vif *vif,
2082 struct ieee80211_sta *sta)
2083 {
2084 hwsim_check_magic(vif);
2085 hwsim_set_sta_magic(sta);
2086
2087 return 0;
2088 }
2089
mac80211_hwsim_sta_remove(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta)2090 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
2091 struct ieee80211_vif *vif,
2092 struct ieee80211_sta *sta)
2093 {
2094 hwsim_check_magic(vif);
2095 hwsim_clear_sta_magic(sta);
2096
2097 return 0;
2098 }
2099
mac80211_hwsim_sta_notify(struct ieee80211_hw * hw,struct ieee80211_vif * vif,enum sta_notify_cmd cmd,struct ieee80211_sta * sta)2100 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
2101 struct ieee80211_vif *vif,
2102 enum sta_notify_cmd cmd,
2103 struct ieee80211_sta *sta)
2104 {
2105 hwsim_check_magic(vif);
2106
2107 switch (cmd) {
2108 case STA_NOTIFY_SLEEP:
2109 case STA_NOTIFY_AWAKE:
2110 /* TODO: make good use of these flags */
2111 break;
2112 default:
2113 WARN(1, "Invalid sta notify: %d\n", cmd);
2114 break;
2115 }
2116 }
2117
mac80211_hwsim_set_tim(struct ieee80211_hw * hw,struct ieee80211_sta * sta,bool set)2118 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
2119 struct ieee80211_sta *sta,
2120 bool set)
2121 {
2122 hwsim_check_sta_magic(sta);
2123 return 0;
2124 }
2125
mac80211_hwsim_conf_tx(struct ieee80211_hw * hw,struct ieee80211_vif * vif,u16 queue,const struct ieee80211_tx_queue_params * params)2126 static int mac80211_hwsim_conf_tx(
2127 struct ieee80211_hw *hw,
2128 struct ieee80211_vif *vif, u16 queue,
2129 const struct ieee80211_tx_queue_params *params)
2130 {
2131 wiphy_dbg(hw->wiphy,
2132 "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
2133 __func__, queue,
2134 params->txop, params->cw_min,
2135 params->cw_max, params->aifs);
2136 return 0;
2137 }
2138
mac80211_hwsim_get_survey(struct ieee80211_hw * hw,int idx,struct survey_info * survey)2139 static int mac80211_hwsim_get_survey(struct ieee80211_hw *hw, int idx,
2140 struct survey_info *survey)
2141 {
2142 struct mac80211_hwsim_data *hwsim = hw->priv;
2143
2144 if (idx < 0 || idx >= ARRAY_SIZE(hwsim->survey_data))
2145 return -ENOENT;
2146
2147 mutex_lock(&hwsim->mutex);
2148 survey->channel = hwsim->survey_data[idx].channel;
2149 if (!survey->channel) {
2150 mutex_unlock(&hwsim->mutex);
2151 return -ENOENT;
2152 }
2153
2154 /*
2155 * Magically conjured dummy values --- this is only ok for simulated hardware.
2156 *
2157 * A real driver which cannot determine real values noise MUST NOT
2158 * report any, especially not a magically conjured ones :-)
2159 */
2160 survey->filled = SURVEY_INFO_NOISE_DBM |
2161 SURVEY_INFO_TIME |
2162 SURVEY_INFO_TIME_BUSY;
2163 survey->noise = -92;
2164 survey->time =
2165 jiffies_to_msecs(hwsim->survey_data[idx].end -
2166 hwsim->survey_data[idx].start);
2167 /* report 12.5% of channel time is used */
2168 survey->time_busy = survey->time/8;
2169 mutex_unlock(&hwsim->mutex);
2170
2171 return 0;
2172 }
2173
2174 #ifdef CONFIG_NL80211_TESTMODE
2175 /*
2176 * This section contains example code for using netlink
2177 * attributes with the testmode command in nl80211.
2178 */
2179
2180 /* These enums need to be kept in sync with userspace */
2181 enum hwsim_testmode_attr {
2182 __HWSIM_TM_ATTR_INVALID = 0,
2183 HWSIM_TM_ATTR_CMD = 1,
2184 HWSIM_TM_ATTR_PS = 2,
2185
2186 /* keep last */
2187 __HWSIM_TM_ATTR_AFTER_LAST,
2188 HWSIM_TM_ATTR_MAX = __HWSIM_TM_ATTR_AFTER_LAST - 1
2189 };
2190
2191 enum hwsim_testmode_cmd {
2192 HWSIM_TM_CMD_SET_PS = 0,
2193 HWSIM_TM_CMD_GET_PS = 1,
2194 HWSIM_TM_CMD_STOP_QUEUES = 2,
2195 HWSIM_TM_CMD_WAKE_QUEUES = 3,
2196 };
2197
2198 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
2199 [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
2200 [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
2201 };
2202
mac80211_hwsim_testmode_cmd(struct ieee80211_hw * hw,struct ieee80211_vif * vif,void * data,int len)2203 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
2204 struct ieee80211_vif *vif,
2205 void *data, int len)
2206 {
2207 struct mac80211_hwsim_data *hwsim = hw->priv;
2208 struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
2209 struct sk_buff *skb;
2210 int err, ps;
2211
2212 err = nla_parse_deprecated(tb, HWSIM_TM_ATTR_MAX, data, len,
2213 hwsim_testmode_policy, NULL);
2214 if (err)
2215 return err;
2216
2217 if (!tb[HWSIM_TM_ATTR_CMD])
2218 return -EINVAL;
2219
2220 switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
2221 case HWSIM_TM_CMD_SET_PS:
2222 if (!tb[HWSIM_TM_ATTR_PS])
2223 return -EINVAL;
2224 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
2225 return hwsim_fops_ps_write(hwsim, ps);
2226 case HWSIM_TM_CMD_GET_PS:
2227 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
2228 nla_total_size(sizeof(u32)));
2229 if (!skb)
2230 return -ENOMEM;
2231 if (nla_put_u32(skb, HWSIM_TM_ATTR_PS, hwsim->ps))
2232 goto nla_put_failure;
2233 return cfg80211_testmode_reply(skb);
2234 case HWSIM_TM_CMD_STOP_QUEUES:
2235 ieee80211_stop_queues(hw);
2236 return 0;
2237 case HWSIM_TM_CMD_WAKE_QUEUES:
2238 ieee80211_wake_queues(hw);
2239 return 0;
2240 default:
2241 return -EOPNOTSUPP;
2242 }
2243
2244 nla_put_failure:
2245 kfree_skb(skb);
2246 return -ENOBUFS;
2247 }
2248 #endif
2249
mac80211_hwsim_ampdu_action(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_ampdu_params * params)2250 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
2251 struct ieee80211_vif *vif,
2252 struct ieee80211_ampdu_params *params)
2253 {
2254 struct ieee80211_sta *sta = params->sta;
2255 enum ieee80211_ampdu_mlme_action action = params->action;
2256 u16 tid = params->tid;
2257
2258 switch (action) {
2259 case IEEE80211_AMPDU_TX_START:
2260 return IEEE80211_AMPDU_TX_START_IMMEDIATE;
2261 case IEEE80211_AMPDU_TX_STOP_CONT:
2262 case IEEE80211_AMPDU_TX_STOP_FLUSH:
2263 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
2264 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
2265 break;
2266 case IEEE80211_AMPDU_TX_OPERATIONAL:
2267 break;
2268 case IEEE80211_AMPDU_RX_START:
2269 case IEEE80211_AMPDU_RX_STOP:
2270 break;
2271 default:
2272 return -EOPNOTSUPP;
2273 }
2274
2275 return 0;
2276 }
2277
mac80211_hwsim_flush(struct ieee80211_hw * hw,struct ieee80211_vif * vif,u32 queues,bool drop)2278 static void mac80211_hwsim_flush(struct ieee80211_hw *hw,
2279 struct ieee80211_vif *vif,
2280 u32 queues, bool drop)
2281 {
2282 /* Not implemented, queues only on kernel side */
2283 }
2284
hw_scan_work(struct work_struct * work)2285 static void hw_scan_work(struct work_struct *work)
2286 {
2287 struct mac80211_hwsim_data *hwsim =
2288 container_of(work, struct mac80211_hwsim_data, hw_scan.work);
2289 struct cfg80211_scan_request *req = hwsim->hw_scan_request;
2290 int dwell, i;
2291
2292 mutex_lock(&hwsim->mutex);
2293 if (hwsim->scan_chan_idx >= req->n_channels) {
2294 struct cfg80211_scan_info info = {
2295 .aborted = false,
2296 };
2297
2298 wiphy_dbg(hwsim->hw->wiphy, "hw scan complete\n");
2299 ieee80211_scan_completed(hwsim->hw, &info);
2300 hwsim->hw_scan_request = NULL;
2301 hwsim->hw_scan_vif = NULL;
2302 hwsim->tmp_chan = NULL;
2303 mutex_unlock(&hwsim->mutex);
2304 mac80211_hwsim_config_mac_nl(hwsim->hw, hwsim->scan_addr,
2305 false);
2306 return;
2307 }
2308
2309 wiphy_dbg(hwsim->hw->wiphy, "hw scan %d MHz\n",
2310 req->channels[hwsim->scan_chan_idx]->center_freq);
2311
2312 hwsim->tmp_chan = req->channels[hwsim->scan_chan_idx];
2313 if (hwsim->tmp_chan->flags & (IEEE80211_CHAN_NO_IR |
2314 IEEE80211_CHAN_RADAR) ||
2315 !req->n_ssids) {
2316 dwell = 120;
2317 } else {
2318 dwell = 30;
2319 /* send probes */
2320 for (i = 0; i < req->n_ssids; i++) {
2321 struct sk_buff *probe;
2322 struct ieee80211_mgmt *mgmt;
2323
2324 probe = ieee80211_probereq_get(hwsim->hw,
2325 hwsim->scan_addr,
2326 req->ssids[i].ssid,
2327 req->ssids[i].ssid_len,
2328 req->ie_len);
2329 if (!probe)
2330 continue;
2331
2332 mgmt = (struct ieee80211_mgmt *) probe->data;
2333 memcpy(mgmt->da, req->bssid, ETH_ALEN);
2334 memcpy(mgmt->bssid, req->bssid, ETH_ALEN);
2335
2336 if (req->ie_len)
2337 skb_put_data(probe, req->ie, req->ie_len);
2338
2339 local_bh_disable();
2340 mac80211_hwsim_tx_frame(hwsim->hw, probe,
2341 hwsim->tmp_chan);
2342 local_bh_enable();
2343 }
2344 }
2345 ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan,
2346 msecs_to_jiffies(dwell));
2347 hwsim->survey_data[hwsim->scan_chan_idx].channel = hwsim->tmp_chan;
2348 hwsim->survey_data[hwsim->scan_chan_idx].start = jiffies;
2349 hwsim->survey_data[hwsim->scan_chan_idx].end =
2350 jiffies + msecs_to_jiffies(dwell);
2351 hwsim->scan_chan_idx++;
2352 mutex_unlock(&hwsim->mutex);
2353 }
2354
mac80211_hwsim_hw_scan(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_scan_request * hw_req)2355 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
2356 struct ieee80211_vif *vif,
2357 struct ieee80211_scan_request *hw_req)
2358 {
2359 struct mac80211_hwsim_data *hwsim = hw->priv;
2360 struct cfg80211_scan_request *req = &hw_req->req;
2361
2362 mutex_lock(&hwsim->mutex);
2363 if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
2364 mutex_unlock(&hwsim->mutex);
2365 return -EBUSY;
2366 }
2367 hwsim->hw_scan_request = req;
2368 hwsim->hw_scan_vif = vif;
2369 hwsim->scan_chan_idx = 0;
2370 if (req->flags & NL80211_SCAN_FLAG_RANDOM_ADDR)
2371 get_random_mask_addr(hwsim->scan_addr,
2372 hw_req->req.mac_addr,
2373 hw_req->req.mac_addr_mask);
2374 else
2375 memcpy(hwsim->scan_addr, vif->addr, ETH_ALEN);
2376 memset(hwsim->survey_data, 0, sizeof(hwsim->survey_data));
2377 mutex_unlock(&hwsim->mutex);
2378
2379 mac80211_hwsim_config_mac_nl(hw, hwsim->scan_addr, true);
2380 wiphy_dbg(hw->wiphy, "hwsim hw_scan request\n");
2381
2382 ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan, 0);
2383
2384 return 0;
2385 }
2386
mac80211_hwsim_cancel_hw_scan(struct ieee80211_hw * hw,struct ieee80211_vif * vif)2387 static void mac80211_hwsim_cancel_hw_scan(struct ieee80211_hw *hw,
2388 struct ieee80211_vif *vif)
2389 {
2390 struct mac80211_hwsim_data *hwsim = hw->priv;
2391 struct cfg80211_scan_info info = {
2392 .aborted = true,
2393 };
2394
2395 wiphy_dbg(hw->wiphy, "hwsim cancel_hw_scan\n");
2396
2397 cancel_delayed_work_sync(&hwsim->hw_scan);
2398
2399 mutex_lock(&hwsim->mutex);
2400 ieee80211_scan_completed(hwsim->hw, &info);
2401 hwsim->tmp_chan = NULL;
2402 hwsim->hw_scan_request = NULL;
2403 hwsim->hw_scan_vif = NULL;
2404 mutex_unlock(&hwsim->mutex);
2405 }
2406
mac80211_hwsim_sw_scan(struct ieee80211_hw * hw,struct ieee80211_vif * vif,const u8 * mac_addr)2407 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw,
2408 struct ieee80211_vif *vif,
2409 const u8 *mac_addr)
2410 {
2411 struct mac80211_hwsim_data *hwsim = hw->priv;
2412
2413 mutex_lock(&hwsim->mutex);
2414
2415 if (hwsim->scanning) {
2416 pr_debug("two hwsim sw_scans detected!\n");
2417 goto out;
2418 }
2419
2420 pr_debug("hwsim sw_scan request, prepping stuff\n");
2421
2422 memcpy(hwsim->scan_addr, mac_addr, ETH_ALEN);
2423 mac80211_hwsim_config_mac_nl(hw, hwsim->scan_addr, true);
2424 hwsim->scanning = true;
2425 memset(hwsim->survey_data, 0, sizeof(hwsim->survey_data));
2426
2427 out:
2428 mutex_unlock(&hwsim->mutex);
2429 }
2430
mac80211_hwsim_sw_scan_complete(struct ieee80211_hw * hw,struct ieee80211_vif * vif)2431 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw,
2432 struct ieee80211_vif *vif)
2433 {
2434 struct mac80211_hwsim_data *hwsim = hw->priv;
2435
2436 mutex_lock(&hwsim->mutex);
2437
2438 pr_debug("hwsim sw_scan_complete\n");
2439 hwsim->scanning = false;
2440 mac80211_hwsim_config_mac_nl(hw, hwsim->scan_addr, false);
2441 eth_zero_addr(hwsim->scan_addr);
2442
2443 mutex_unlock(&hwsim->mutex);
2444 }
2445
hw_roc_start(struct work_struct * work)2446 static void hw_roc_start(struct work_struct *work)
2447 {
2448 struct mac80211_hwsim_data *hwsim =
2449 container_of(work, struct mac80211_hwsim_data, roc_start.work);
2450
2451 mutex_lock(&hwsim->mutex);
2452
2453 wiphy_dbg(hwsim->hw->wiphy, "hwsim ROC begins\n");
2454 hwsim->tmp_chan = hwsim->roc_chan;
2455 ieee80211_ready_on_channel(hwsim->hw);
2456
2457 ieee80211_queue_delayed_work(hwsim->hw, &hwsim->roc_done,
2458 msecs_to_jiffies(hwsim->roc_duration));
2459
2460 mutex_unlock(&hwsim->mutex);
2461 }
2462
hw_roc_done(struct work_struct * work)2463 static void hw_roc_done(struct work_struct *work)
2464 {
2465 struct mac80211_hwsim_data *hwsim =
2466 container_of(work, struct mac80211_hwsim_data, roc_done.work);
2467
2468 mutex_lock(&hwsim->mutex);
2469 ieee80211_remain_on_channel_expired(hwsim->hw);
2470 hwsim->tmp_chan = NULL;
2471 mutex_unlock(&hwsim->mutex);
2472
2473 wiphy_dbg(hwsim->hw->wiphy, "hwsim ROC expired\n");
2474 }
2475
mac80211_hwsim_roc(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_channel * chan,int duration,enum ieee80211_roc_type type)2476 static int mac80211_hwsim_roc(struct ieee80211_hw *hw,
2477 struct ieee80211_vif *vif,
2478 struct ieee80211_channel *chan,
2479 int duration,
2480 enum ieee80211_roc_type type)
2481 {
2482 struct mac80211_hwsim_data *hwsim = hw->priv;
2483
2484 mutex_lock(&hwsim->mutex);
2485 if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
2486 mutex_unlock(&hwsim->mutex);
2487 return -EBUSY;
2488 }
2489
2490 hwsim->roc_chan = chan;
2491 hwsim->roc_duration = duration;
2492 mutex_unlock(&hwsim->mutex);
2493
2494 wiphy_dbg(hw->wiphy, "hwsim ROC (%d MHz, %d ms)\n",
2495 chan->center_freq, duration);
2496 ieee80211_queue_delayed_work(hw, &hwsim->roc_start, HZ/50);
2497
2498 return 0;
2499 }
2500
mac80211_hwsim_croc(struct ieee80211_hw * hw,struct ieee80211_vif * vif)2501 static int mac80211_hwsim_croc(struct ieee80211_hw *hw,
2502 struct ieee80211_vif *vif)
2503 {
2504 struct mac80211_hwsim_data *hwsim = hw->priv;
2505
2506 cancel_delayed_work_sync(&hwsim->roc_start);
2507 cancel_delayed_work_sync(&hwsim->roc_done);
2508
2509 mutex_lock(&hwsim->mutex);
2510 hwsim->tmp_chan = NULL;
2511 mutex_unlock(&hwsim->mutex);
2512
2513 wiphy_dbg(hw->wiphy, "hwsim ROC canceled\n");
2514
2515 return 0;
2516 }
2517
mac80211_hwsim_add_chanctx(struct ieee80211_hw * hw,struct ieee80211_chanctx_conf * ctx)2518 static int mac80211_hwsim_add_chanctx(struct ieee80211_hw *hw,
2519 struct ieee80211_chanctx_conf *ctx)
2520 {
2521 struct mac80211_hwsim_data *hwsim = hw->priv;
2522
2523 mutex_lock(&hwsim->mutex);
2524 hwsim->chanctx = ctx;
2525 mutex_unlock(&hwsim->mutex);
2526 hwsim_set_chanctx_magic(ctx);
2527 wiphy_dbg(hw->wiphy,
2528 "add channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2529 ctx->def.chan->center_freq, ctx->def.width,
2530 ctx->def.center_freq1, ctx->def.center_freq2);
2531 return 0;
2532 }
2533
mac80211_hwsim_remove_chanctx(struct ieee80211_hw * hw,struct ieee80211_chanctx_conf * ctx)2534 static void mac80211_hwsim_remove_chanctx(struct ieee80211_hw *hw,
2535 struct ieee80211_chanctx_conf *ctx)
2536 {
2537 struct mac80211_hwsim_data *hwsim = hw->priv;
2538
2539 mutex_lock(&hwsim->mutex);
2540 hwsim->chanctx = NULL;
2541 mutex_unlock(&hwsim->mutex);
2542 wiphy_dbg(hw->wiphy,
2543 "remove channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2544 ctx->def.chan->center_freq, ctx->def.width,
2545 ctx->def.center_freq1, ctx->def.center_freq2);
2546 hwsim_check_chanctx_magic(ctx);
2547 hwsim_clear_chanctx_magic(ctx);
2548 }
2549
mac80211_hwsim_change_chanctx(struct ieee80211_hw * hw,struct ieee80211_chanctx_conf * ctx,u32 changed)2550 static void mac80211_hwsim_change_chanctx(struct ieee80211_hw *hw,
2551 struct ieee80211_chanctx_conf *ctx,
2552 u32 changed)
2553 {
2554 struct mac80211_hwsim_data *hwsim = hw->priv;
2555
2556 mutex_lock(&hwsim->mutex);
2557 hwsim->chanctx = ctx;
2558 mutex_unlock(&hwsim->mutex);
2559 hwsim_check_chanctx_magic(ctx);
2560 wiphy_dbg(hw->wiphy,
2561 "change channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2562 ctx->def.chan->center_freq, ctx->def.width,
2563 ctx->def.center_freq1, ctx->def.center_freq2);
2564 }
2565
mac80211_hwsim_assign_vif_chanctx(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_chanctx_conf * ctx)2566 static int mac80211_hwsim_assign_vif_chanctx(struct ieee80211_hw *hw,
2567 struct ieee80211_vif *vif,
2568 struct ieee80211_chanctx_conf *ctx)
2569 {
2570 hwsim_check_magic(vif);
2571 hwsim_check_chanctx_magic(ctx);
2572
2573 return 0;
2574 }
2575
mac80211_hwsim_unassign_vif_chanctx(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_chanctx_conf * ctx)2576 static void mac80211_hwsim_unassign_vif_chanctx(struct ieee80211_hw *hw,
2577 struct ieee80211_vif *vif,
2578 struct ieee80211_chanctx_conf *ctx)
2579 {
2580 hwsim_check_magic(vif);
2581 hwsim_check_chanctx_magic(ctx);
2582 }
2583
2584 static const char mac80211_hwsim_gstrings_stats[][ETH_GSTRING_LEN] = {
2585 "tx_pkts_nic",
2586 "tx_bytes_nic",
2587 "rx_pkts_nic",
2588 "rx_bytes_nic",
2589 "d_tx_dropped",
2590 "d_tx_failed",
2591 "d_ps_mode",
2592 "d_group",
2593 };
2594
2595 #define MAC80211_HWSIM_SSTATS_LEN ARRAY_SIZE(mac80211_hwsim_gstrings_stats)
2596
mac80211_hwsim_get_et_strings(struct ieee80211_hw * hw,struct ieee80211_vif * vif,u32 sset,u8 * data)2597 static void mac80211_hwsim_get_et_strings(struct ieee80211_hw *hw,
2598 struct ieee80211_vif *vif,
2599 u32 sset, u8 *data)
2600 {
2601 if (sset == ETH_SS_STATS)
2602 memcpy(data, *mac80211_hwsim_gstrings_stats,
2603 sizeof(mac80211_hwsim_gstrings_stats));
2604 }
2605
mac80211_hwsim_get_et_sset_count(struct ieee80211_hw * hw,struct ieee80211_vif * vif,int sset)2606 static int mac80211_hwsim_get_et_sset_count(struct ieee80211_hw *hw,
2607 struct ieee80211_vif *vif, int sset)
2608 {
2609 if (sset == ETH_SS_STATS)
2610 return MAC80211_HWSIM_SSTATS_LEN;
2611 return 0;
2612 }
2613
mac80211_hwsim_get_et_stats(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ethtool_stats * stats,u64 * data)2614 static void mac80211_hwsim_get_et_stats(struct ieee80211_hw *hw,
2615 struct ieee80211_vif *vif,
2616 struct ethtool_stats *stats, u64 *data)
2617 {
2618 struct mac80211_hwsim_data *ar = hw->priv;
2619 int i = 0;
2620
2621 data[i++] = ar->tx_pkts;
2622 data[i++] = ar->tx_bytes;
2623 data[i++] = ar->rx_pkts;
2624 data[i++] = ar->rx_bytes;
2625 data[i++] = ar->tx_dropped;
2626 data[i++] = ar->tx_failed;
2627 data[i++] = ar->ps;
2628 data[i++] = ar->group;
2629
2630 WARN_ON(i != MAC80211_HWSIM_SSTATS_LEN);
2631 }
2632
mac80211_hwsim_tx_last_beacon(struct ieee80211_hw * hw)2633 static int mac80211_hwsim_tx_last_beacon(struct ieee80211_hw *hw)
2634 {
2635 return 1;
2636 }
2637
2638 #define HWSIM_COMMON_OPS \
2639 .tx = mac80211_hwsim_tx, \
2640 .start = mac80211_hwsim_start, \
2641 .stop = mac80211_hwsim_stop, \
2642 .add_interface = mac80211_hwsim_add_interface, \
2643 .change_interface = mac80211_hwsim_change_interface, \
2644 .remove_interface = mac80211_hwsim_remove_interface, \
2645 .config = mac80211_hwsim_config, \
2646 .configure_filter = mac80211_hwsim_configure_filter, \
2647 .bss_info_changed = mac80211_hwsim_bss_info_changed, \
2648 .tx_last_beacon = mac80211_hwsim_tx_last_beacon, \
2649 .sta_add = mac80211_hwsim_sta_add, \
2650 .sta_remove = mac80211_hwsim_sta_remove, \
2651 .sta_notify = mac80211_hwsim_sta_notify, \
2652 .set_tim = mac80211_hwsim_set_tim, \
2653 .conf_tx = mac80211_hwsim_conf_tx, \
2654 .get_survey = mac80211_hwsim_get_survey, \
2655 CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd) \
2656 .ampdu_action = mac80211_hwsim_ampdu_action, \
2657 .flush = mac80211_hwsim_flush, \
2658 .get_tsf = mac80211_hwsim_get_tsf, \
2659 .set_tsf = mac80211_hwsim_set_tsf, \
2660 .get_et_sset_count = mac80211_hwsim_get_et_sset_count, \
2661 .get_et_stats = mac80211_hwsim_get_et_stats, \
2662 .get_et_strings = mac80211_hwsim_get_et_strings,
2663
2664 static const struct ieee80211_ops mac80211_hwsim_ops = {
2665 HWSIM_COMMON_OPS
2666 .sw_scan_start = mac80211_hwsim_sw_scan,
2667 .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
2668 };
2669
2670 static const struct ieee80211_ops mac80211_hwsim_mchan_ops = {
2671 HWSIM_COMMON_OPS
2672 .hw_scan = mac80211_hwsim_hw_scan,
2673 .cancel_hw_scan = mac80211_hwsim_cancel_hw_scan,
2674 .sw_scan_start = NULL,
2675 .sw_scan_complete = NULL,
2676 .remain_on_channel = mac80211_hwsim_roc,
2677 .cancel_remain_on_channel = mac80211_hwsim_croc,
2678 .add_chanctx = mac80211_hwsim_add_chanctx,
2679 .remove_chanctx = mac80211_hwsim_remove_chanctx,
2680 .change_chanctx = mac80211_hwsim_change_chanctx,
2681 .assign_vif_chanctx = mac80211_hwsim_assign_vif_chanctx,
2682 .unassign_vif_chanctx = mac80211_hwsim_unassign_vif_chanctx,
2683 };
2684
2685 struct hwsim_new_radio_params {
2686 unsigned int channels;
2687 const char *reg_alpha2;
2688 const struct ieee80211_regdomain *regd;
2689 bool reg_strict;
2690 bool p2p_device;
2691 bool use_chanctx;
2692 bool destroy_on_close;
2693 const char *hwname;
2694 bool no_vif;
2695 const u8 *perm_addr;
2696 u32 iftypes;
2697 u32 *ciphers;
2698 u8 n_ciphers;
2699 };
2700
hwsim_mcast_config_msg(struct sk_buff * mcast_skb,struct genl_info * info)2701 static void hwsim_mcast_config_msg(struct sk_buff *mcast_skb,
2702 struct genl_info *info)
2703 {
2704 if (info)
2705 genl_notify(&hwsim_genl_family, mcast_skb, info,
2706 HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2707 else
2708 genlmsg_multicast(&hwsim_genl_family, mcast_skb, 0,
2709 HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2710 }
2711
append_radio_msg(struct sk_buff * skb,int id,struct hwsim_new_radio_params * param)2712 static int append_radio_msg(struct sk_buff *skb, int id,
2713 struct hwsim_new_radio_params *param)
2714 {
2715 int ret;
2716
2717 ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
2718 if (ret < 0)
2719 return ret;
2720
2721 if (param->channels) {
2722 ret = nla_put_u32(skb, HWSIM_ATTR_CHANNELS, param->channels);
2723 if (ret < 0)
2724 return ret;
2725 }
2726
2727 if (param->reg_alpha2) {
2728 ret = nla_put(skb, HWSIM_ATTR_REG_HINT_ALPHA2, 2,
2729 param->reg_alpha2);
2730 if (ret < 0)
2731 return ret;
2732 }
2733
2734 if (param->regd) {
2735 int i;
2736
2737 for (i = 0; i < ARRAY_SIZE(hwsim_world_regdom_custom); i++) {
2738 if (hwsim_world_regdom_custom[i] != param->regd)
2739 continue;
2740
2741 ret = nla_put_u32(skb, HWSIM_ATTR_REG_CUSTOM_REG, i);
2742 if (ret < 0)
2743 return ret;
2744 break;
2745 }
2746 }
2747
2748 if (param->reg_strict) {
2749 ret = nla_put_flag(skb, HWSIM_ATTR_REG_STRICT_REG);
2750 if (ret < 0)
2751 return ret;
2752 }
2753
2754 if (param->p2p_device) {
2755 ret = nla_put_flag(skb, HWSIM_ATTR_SUPPORT_P2P_DEVICE);
2756 if (ret < 0)
2757 return ret;
2758 }
2759
2760 if (param->use_chanctx) {
2761 ret = nla_put_flag(skb, HWSIM_ATTR_USE_CHANCTX);
2762 if (ret < 0)
2763 return ret;
2764 }
2765
2766 if (param->hwname) {
2767 ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME,
2768 strlen(param->hwname), param->hwname);
2769 if (ret < 0)
2770 return ret;
2771 }
2772
2773 return 0;
2774 }
2775
hwsim_mcast_new_radio(int id,struct genl_info * info,struct hwsim_new_radio_params * param)2776 static void hwsim_mcast_new_radio(int id, struct genl_info *info,
2777 struct hwsim_new_radio_params *param)
2778 {
2779 struct sk_buff *mcast_skb;
2780 void *data;
2781
2782 mcast_skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2783 if (!mcast_skb)
2784 return;
2785
2786 data = genlmsg_put(mcast_skb, 0, 0, &hwsim_genl_family, 0,
2787 HWSIM_CMD_NEW_RADIO);
2788 if (!data)
2789 goto out_err;
2790
2791 if (append_radio_msg(mcast_skb, id, param) < 0)
2792 goto out_err;
2793
2794 genlmsg_end(mcast_skb, data);
2795
2796 hwsim_mcast_config_msg(mcast_skb, info);
2797 return;
2798
2799 out_err:
2800 nlmsg_free(mcast_skb);
2801 }
2802
2803 static const struct ieee80211_sband_iftype_data he_capa_2ghz[] = {
2804 {
2805 /* TODO: should we support other types, e.g., P2P?*/
2806 .types_mask = BIT(NL80211_IFTYPE_STATION) |
2807 BIT(NL80211_IFTYPE_AP),
2808 .he_cap = {
2809 .has_he = true,
2810 .he_cap_elem = {
2811 .mac_cap_info[0] =
2812 IEEE80211_HE_MAC_CAP0_HTC_HE,
2813 .mac_cap_info[1] =
2814 IEEE80211_HE_MAC_CAP1_TF_MAC_PAD_DUR_16US |
2815 IEEE80211_HE_MAC_CAP1_MULTI_TID_AGG_RX_QOS_8,
2816 .mac_cap_info[2] =
2817 IEEE80211_HE_MAC_CAP2_BSR |
2818 IEEE80211_HE_MAC_CAP2_MU_CASCADING |
2819 IEEE80211_HE_MAC_CAP2_ACK_EN,
2820 .mac_cap_info[3] =
2821 IEEE80211_HE_MAC_CAP3_OMI_CONTROL |
2822 IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_EXT_3,
2823 .mac_cap_info[4] = IEEE80211_HE_MAC_CAP4_AMSDU_IN_AMPDU,
2824 .phy_cap_info[1] =
2825 IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK |
2826 IEEE80211_HE_PHY_CAP1_DEVICE_CLASS_A |
2827 IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD |
2828 IEEE80211_HE_PHY_CAP1_MIDAMBLE_RX_TX_MAX_NSTS,
2829 .phy_cap_info[2] =
2830 IEEE80211_HE_PHY_CAP2_NDP_4x_LTF_AND_3_2US |
2831 IEEE80211_HE_PHY_CAP2_STBC_TX_UNDER_80MHZ |
2832 IEEE80211_HE_PHY_CAP2_STBC_RX_UNDER_80MHZ |
2833 IEEE80211_HE_PHY_CAP2_UL_MU_FULL_MU_MIMO |
2834 IEEE80211_HE_PHY_CAP2_UL_MU_PARTIAL_MU_MIMO,
2835
2836 /* Leave all the other PHY capability bytes
2837 * unset, as DCM, beam forming, RU and PPE
2838 * threshold information are not supported
2839 */
2840 },
2841 .he_mcs_nss_supp = {
2842 .rx_mcs_80 = cpu_to_le16(0xfffa),
2843 .tx_mcs_80 = cpu_to_le16(0xfffa),
2844 .rx_mcs_160 = cpu_to_le16(0xffff),
2845 .tx_mcs_160 = cpu_to_le16(0xffff),
2846 .rx_mcs_80p80 = cpu_to_le16(0xffff),
2847 .tx_mcs_80p80 = cpu_to_le16(0xffff),
2848 },
2849 },
2850 },
2851 #ifdef CONFIG_MAC80211_MESH
2852 {
2853 /* TODO: should we support other types, e.g., IBSS?*/
2854 .types_mask = BIT(NL80211_IFTYPE_MESH_POINT),
2855 .he_cap = {
2856 .has_he = true,
2857 .he_cap_elem = {
2858 .mac_cap_info[0] =
2859 IEEE80211_HE_MAC_CAP0_HTC_HE,
2860 .mac_cap_info[1] =
2861 IEEE80211_HE_MAC_CAP1_MULTI_TID_AGG_RX_QOS_8,
2862 .mac_cap_info[2] =
2863 IEEE80211_HE_MAC_CAP2_ACK_EN,
2864 .mac_cap_info[3] =
2865 IEEE80211_HE_MAC_CAP3_OMI_CONTROL |
2866 IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_EXT_3,
2867 .mac_cap_info[4] = IEEE80211_HE_MAC_CAP4_AMSDU_IN_AMPDU,
2868 .phy_cap_info[1] =
2869 IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK |
2870 IEEE80211_HE_PHY_CAP1_DEVICE_CLASS_A |
2871 IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD |
2872 IEEE80211_HE_PHY_CAP1_MIDAMBLE_RX_TX_MAX_NSTS,
2873 .phy_cap_info[2] = 0,
2874
2875 /* Leave all the other PHY capability bytes
2876 * unset, as DCM, beam forming, RU and PPE
2877 * threshold information are not supported
2878 */
2879 },
2880 .he_mcs_nss_supp = {
2881 .rx_mcs_80 = cpu_to_le16(0xfffa),
2882 .tx_mcs_80 = cpu_to_le16(0xfffa),
2883 .rx_mcs_160 = cpu_to_le16(0xffff),
2884 .tx_mcs_160 = cpu_to_le16(0xffff),
2885 .rx_mcs_80p80 = cpu_to_le16(0xffff),
2886 .tx_mcs_80p80 = cpu_to_le16(0xffff),
2887 },
2888 },
2889 },
2890 #endif
2891 };
2892
2893 static const struct ieee80211_sband_iftype_data he_capa_5ghz[] = {
2894 {
2895 /* TODO: should we support other types, e.g., P2P?*/
2896 .types_mask = BIT(NL80211_IFTYPE_STATION) |
2897 BIT(NL80211_IFTYPE_AP),
2898 .he_cap = {
2899 .has_he = true,
2900 .he_cap_elem = {
2901 .mac_cap_info[0] =
2902 IEEE80211_HE_MAC_CAP0_HTC_HE,
2903 .mac_cap_info[1] =
2904 IEEE80211_HE_MAC_CAP1_TF_MAC_PAD_DUR_16US |
2905 IEEE80211_HE_MAC_CAP1_MULTI_TID_AGG_RX_QOS_8,
2906 .mac_cap_info[2] =
2907 IEEE80211_HE_MAC_CAP2_BSR |
2908 IEEE80211_HE_MAC_CAP2_MU_CASCADING |
2909 IEEE80211_HE_MAC_CAP2_ACK_EN,
2910 .mac_cap_info[3] =
2911 IEEE80211_HE_MAC_CAP3_OMI_CONTROL |
2912 IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_EXT_3,
2913 .mac_cap_info[4] = IEEE80211_HE_MAC_CAP4_AMSDU_IN_AMPDU,
2914 .phy_cap_info[0] =
2915 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G |
2916 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G |
2917 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G,
2918 .phy_cap_info[1] =
2919 IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK |
2920 IEEE80211_HE_PHY_CAP1_DEVICE_CLASS_A |
2921 IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD |
2922 IEEE80211_HE_PHY_CAP1_MIDAMBLE_RX_TX_MAX_NSTS,
2923 .phy_cap_info[2] =
2924 IEEE80211_HE_PHY_CAP2_NDP_4x_LTF_AND_3_2US |
2925 IEEE80211_HE_PHY_CAP2_STBC_TX_UNDER_80MHZ |
2926 IEEE80211_HE_PHY_CAP2_STBC_RX_UNDER_80MHZ |
2927 IEEE80211_HE_PHY_CAP2_UL_MU_FULL_MU_MIMO |
2928 IEEE80211_HE_PHY_CAP2_UL_MU_PARTIAL_MU_MIMO,
2929
2930 /* Leave all the other PHY capability bytes
2931 * unset, as DCM, beam forming, RU and PPE
2932 * threshold information are not supported
2933 */
2934 },
2935 .he_mcs_nss_supp = {
2936 .rx_mcs_80 = cpu_to_le16(0xfffa),
2937 .tx_mcs_80 = cpu_to_le16(0xfffa),
2938 .rx_mcs_160 = cpu_to_le16(0xfffa),
2939 .tx_mcs_160 = cpu_to_le16(0xfffa),
2940 .rx_mcs_80p80 = cpu_to_le16(0xfffa),
2941 .tx_mcs_80p80 = cpu_to_le16(0xfffa),
2942 },
2943 },
2944 },
2945 #ifdef CONFIG_MAC80211_MESH
2946 {
2947 /* TODO: should we support other types, e.g., IBSS?*/
2948 .types_mask = BIT(NL80211_IFTYPE_MESH_POINT),
2949 .he_cap = {
2950 .has_he = true,
2951 .he_cap_elem = {
2952 .mac_cap_info[0] =
2953 IEEE80211_HE_MAC_CAP0_HTC_HE,
2954 .mac_cap_info[1] =
2955 IEEE80211_HE_MAC_CAP1_MULTI_TID_AGG_RX_QOS_8,
2956 .mac_cap_info[2] =
2957 IEEE80211_HE_MAC_CAP2_ACK_EN,
2958 .mac_cap_info[3] =
2959 IEEE80211_HE_MAC_CAP3_OMI_CONTROL |
2960 IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_EXT_3,
2961 .mac_cap_info[4] = IEEE80211_HE_MAC_CAP4_AMSDU_IN_AMPDU,
2962 .phy_cap_info[0] =
2963 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G |
2964 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G |
2965 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G,
2966 .phy_cap_info[1] =
2967 IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK |
2968 IEEE80211_HE_PHY_CAP1_DEVICE_CLASS_A |
2969 IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD |
2970 IEEE80211_HE_PHY_CAP1_MIDAMBLE_RX_TX_MAX_NSTS,
2971 .phy_cap_info[2] = 0,
2972
2973 /* Leave all the other PHY capability bytes
2974 * unset, as DCM, beam forming, RU and PPE
2975 * threshold information are not supported
2976 */
2977 },
2978 .he_mcs_nss_supp = {
2979 .rx_mcs_80 = cpu_to_le16(0xfffa),
2980 .tx_mcs_80 = cpu_to_le16(0xfffa),
2981 .rx_mcs_160 = cpu_to_le16(0xfffa),
2982 .tx_mcs_160 = cpu_to_le16(0xfffa),
2983 .rx_mcs_80p80 = cpu_to_le16(0xfffa),
2984 .tx_mcs_80p80 = cpu_to_le16(0xfffa),
2985 },
2986 },
2987 },
2988 #endif
2989 };
2990
mac80211_hwsim_he_capab(struct ieee80211_supported_band * sband)2991 static void mac80211_hwsim_he_capab(struct ieee80211_supported_band *sband)
2992 {
2993 u16 n_iftype_data;
2994
2995 if (sband->band == NL80211_BAND_2GHZ) {
2996 n_iftype_data = ARRAY_SIZE(he_capa_2ghz);
2997 sband->iftype_data =
2998 (struct ieee80211_sband_iftype_data *)he_capa_2ghz;
2999 } else if (sband->band == NL80211_BAND_5GHZ) {
3000 n_iftype_data = ARRAY_SIZE(he_capa_5ghz);
3001 sband->iftype_data =
3002 (struct ieee80211_sband_iftype_data *)he_capa_5ghz;
3003 } else {
3004 return;
3005 }
3006
3007 sband->n_iftype_data = n_iftype_data;
3008 }
3009
3010 #ifdef CONFIG_MAC80211_MESH
3011 #define HWSIM_MESH_BIT BIT(NL80211_IFTYPE_MESH_POINT)
3012 #else
3013 #define HWSIM_MESH_BIT 0
3014 #endif
3015
3016 #define HWSIM_DEFAULT_IF_LIMIT \
3017 (BIT(NL80211_IFTYPE_STATION) | \
3018 BIT(NL80211_IFTYPE_P2P_CLIENT) | \
3019 BIT(NL80211_IFTYPE_AP) | \
3020 BIT(NL80211_IFTYPE_P2P_GO) | \
3021 HWSIM_MESH_BIT)
3022
3023 #define HWSIM_IFTYPE_SUPPORT_MASK \
3024 (BIT(NL80211_IFTYPE_STATION) | \
3025 BIT(NL80211_IFTYPE_AP) | \
3026 BIT(NL80211_IFTYPE_P2P_CLIENT) | \
3027 BIT(NL80211_IFTYPE_P2P_GO) | \
3028 BIT(NL80211_IFTYPE_ADHOC) | \
3029 BIT(NL80211_IFTYPE_MESH_POINT) | \
3030 BIT(NL80211_IFTYPE_OCB))
3031
mac80211_hwsim_new_radio(struct genl_info * info,struct hwsim_new_radio_params * param)3032 static int mac80211_hwsim_new_radio(struct genl_info *info,
3033 struct hwsim_new_radio_params *param)
3034 {
3035 int err;
3036 u8 addr[ETH_ALEN];
3037 struct mac80211_hwsim_data *data;
3038 struct ieee80211_hw *hw;
3039 enum nl80211_band band;
3040 const struct ieee80211_ops *ops = &mac80211_hwsim_ops;
3041 struct net *net;
3042 int idx, i;
3043 int n_limits = 0;
3044
3045 if (WARN_ON(param->channels > 1 && !param->use_chanctx))
3046 return -EINVAL;
3047
3048 spin_lock_bh(&hwsim_radio_lock);
3049 idx = hwsim_radio_idx++;
3050 spin_unlock_bh(&hwsim_radio_lock);
3051
3052 if (param->use_chanctx)
3053 ops = &mac80211_hwsim_mchan_ops;
3054 hw = ieee80211_alloc_hw_nm(sizeof(*data), ops, param->hwname);
3055 if (!hw) {
3056 pr_debug("mac80211_hwsim: ieee80211_alloc_hw failed\n");
3057 err = -ENOMEM;
3058 goto failed;
3059 }
3060
3061 /* ieee80211_alloc_hw_nm may have used a default name */
3062 param->hwname = wiphy_name(hw->wiphy);
3063
3064 if (info)
3065 net = genl_info_net(info);
3066 else
3067 net = &init_net;
3068 wiphy_net_set(hw->wiphy, net);
3069
3070 data = hw->priv;
3071 data->hw = hw;
3072
3073 data->dev = device_create(hwsim_class, NULL, 0, hw, "hwsim%d", idx);
3074 if (IS_ERR(data->dev)) {
3075 printk(KERN_DEBUG
3076 "mac80211_hwsim: device_create failed (%ld)\n",
3077 PTR_ERR(data->dev));
3078 err = -ENOMEM;
3079 goto failed_drvdata;
3080 }
3081 data->dev->driver = &mac80211_hwsim_driver.driver;
3082 err = device_bind_driver(data->dev);
3083 if (err != 0) {
3084 pr_debug("mac80211_hwsim: device_bind_driver failed (%d)\n",
3085 err);
3086 goto failed_bind;
3087 }
3088
3089 skb_queue_head_init(&data->pending);
3090
3091 SET_IEEE80211_DEV(hw, data->dev);
3092 if (!param->perm_addr) {
3093 eth_zero_addr(addr);
3094 addr[0] = 0x02;
3095 addr[3] = idx >> 8;
3096 addr[4] = idx;
3097 memcpy(data->addresses[0].addr, addr, ETH_ALEN);
3098 /* Why need here second address ? */
3099 memcpy(data->addresses[1].addr, addr, ETH_ALEN);
3100 data->addresses[1].addr[0] |= 0x40;
3101 hw->wiphy->n_addresses = 2;
3102 hw->wiphy->addresses = data->addresses;
3103 /* possible address clash is checked at hash table insertion */
3104 } else {
3105 memcpy(data->addresses[0].addr, param->perm_addr, ETH_ALEN);
3106 /* compatibility with automatically generated mac addr */
3107 memcpy(data->addresses[1].addr, param->perm_addr, ETH_ALEN);
3108 hw->wiphy->n_addresses = 2;
3109 hw->wiphy->addresses = data->addresses;
3110 }
3111
3112 data->channels = param->channels;
3113 data->use_chanctx = param->use_chanctx;
3114 data->idx = idx;
3115 data->destroy_on_close = param->destroy_on_close;
3116 if (info)
3117 data->portid = info->snd_portid;
3118
3119 /* setup interface limits, only on interface types we support */
3120 if (param->iftypes & BIT(NL80211_IFTYPE_ADHOC)) {
3121 data->if_limits[n_limits].max = 1;
3122 data->if_limits[n_limits].types = BIT(NL80211_IFTYPE_ADHOC);
3123 n_limits++;
3124 }
3125
3126 if (param->iftypes & HWSIM_DEFAULT_IF_LIMIT) {
3127 data->if_limits[n_limits].max = 2048;
3128 /*
3129 * For this case, we may only support a subset of
3130 * HWSIM_DEFAULT_IF_LIMIT, therefore we only want to add the
3131 * bits that both param->iftype & HWSIM_DEFAULT_IF_LIMIT have.
3132 */
3133 data->if_limits[n_limits].types =
3134 HWSIM_DEFAULT_IF_LIMIT & param->iftypes;
3135 n_limits++;
3136 }
3137
3138 if (param->iftypes & BIT(NL80211_IFTYPE_P2P_DEVICE)) {
3139 data->if_limits[n_limits].max = 1;
3140 data->if_limits[n_limits].types =
3141 BIT(NL80211_IFTYPE_P2P_DEVICE);
3142 n_limits++;
3143 }
3144
3145 if (data->use_chanctx) {
3146 hw->wiphy->max_scan_ssids = 255;
3147 hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
3148 hw->wiphy->max_remain_on_channel_duration = 1000;
3149 data->if_combination.radar_detect_widths = 0;
3150 data->if_combination.num_different_channels = data->channels;
3151 data->chanctx = NULL;
3152 } else {
3153 data->if_combination.num_different_channels = 1;
3154 data->if_combination.radar_detect_widths =
3155 BIT(NL80211_CHAN_WIDTH_5) |
3156 BIT(NL80211_CHAN_WIDTH_10) |
3157 BIT(NL80211_CHAN_WIDTH_20_NOHT) |
3158 BIT(NL80211_CHAN_WIDTH_20) |
3159 BIT(NL80211_CHAN_WIDTH_40) |
3160 BIT(NL80211_CHAN_WIDTH_80) |
3161 BIT(NL80211_CHAN_WIDTH_160);
3162 }
3163
3164 if (!n_limits) {
3165 err = -EINVAL;
3166 goto failed_hw;
3167 }
3168
3169 data->if_combination.max_interfaces = 0;
3170 for (i = 0; i < n_limits; i++)
3171 data->if_combination.max_interfaces +=
3172 data->if_limits[i].max;
3173
3174 data->if_combination.n_limits = n_limits;
3175 data->if_combination.limits = data->if_limits;
3176
3177 /*
3178 * If we actually were asked to support combinations,
3179 * advertise them - if there's only a single thing like
3180 * only IBSS then don't advertise it as combinations.
3181 */
3182 if (data->if_combination.max_interfaces > 1) {
3183 hw->wiphy->iface_combinations = &data->if_combination;
3184 hw->wiphy->n_iface_combinations = 1;
3185 }
3186
3187 if (param->ciphers) {
3188 memcpy(data->ciphers, param->ciphers,
3189 param->n_ciphers * sizeof(u32));
3190 hw->wiphy->cipher_suites = data->ciphers;
3191 hw->wiphy->n_cipher_suites = param->n_ciphers;
3192 }
3193
3194 INIT_DELAYED_WORK(&data->roc_start, hw_roc_start);
3195 INIT_DELAYED_WORK(&data->roc_done, hw_roc_done);
3196 INIT_DELAYED_WORK(&data->hw_scan, hw_scan_work);
3197
3198 hw->queues = 5;
3199 hw->offchannel_tx_hw_queue = 4;
3200
3201 ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
3202 ieee80211_hw_set(hw, CHANCTX_STA_CSA);
3203 ieee80211_hw_set(hw, SUPPORTS_HT_CCK_RATES);
3204 ieee80211_hw_set(hw, QUEUE_CONTROL);
3205 ieee80211_hw_set(hw, WANT_MONITOR_VIF);
3206 ieee80211_hw_set(hw, AMPDU_AGGREGATION);
3207 ieee80211_hw_set(hw, MFP_CAPABLE);
3208 ieee80211_hw_set(hw, SIGNAL_DBM);
3209 ieee80211_hw_set(hw, SUPPORTS_PS);
3210 ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS);
3211 ieee80211_hw_set(hw, HOST_BROADCAST_PS_BUFFERING);
3212 ieee80211_hw_set(hw, PS_NULLFUNC_STACK);
3213 ieee80211_hw_set(hw, TDLS_WIDER_BW);
3214 if (rctbl)
3215 ieee80211_hw_set(hw, SUPPORTS_RC_TABLE);
3216 ieee80211_hw_set(hw, SUPPORTS_MULTI_BSSID);
3217
3218 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
3219 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS |
3220 WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL |
3221 WIPHY_FLAG_AP_UAPSD |
3222 WIPHY_FLAG_SUPPORTS_5_10_MHZ |
3223 WIPHY_FLAG_HAS_CHANNEL_SWITCH;
3224 hw->wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR |
3225 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
3226 NL80211_FEATURE_STATIC_SMPS |
3227 NL80211_FEATURE_DYNAMIC_SMPS |
3228 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
3229 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_VHT_IBSS);
3230 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_BEACON_PROTECTION);
3231 wiphy_ext_feature_set(hw->wiphy,
3232 NL80211_EXT_FEATURE_MULTICAST_REGISTRATIONS);
3233 wiphy_ext_feature_set(hw->wiphy,
3234 NL80211_EXT_FEATURE_BEACON_RATE_LEGACY);
3235
3236 hw->wiphy->interface_modes = param->iftypes;
3237
3238 /* ask mac80211 to reserve space for magic */
3239 hw->vif_data_size = sizeof(struct hwsim_vif_priv);
3240 hw->sta_data_size = sizeof(struct hwsim_sta_priv);
3241 hw->chanctx_data_size = sizeof(struct hwsim_chanctx_priv);
3242
3243 memcpy(data->channels_2ghz, hwsim_channels_2ghz,
3244 sizeof(hwsim_channels_2ghz));
3245 memcpy(data->channels_5ghz, hwsim_channels_5ghz,
3246 sizeof(hwsim_channels_5ghz));
3247 memcpy(data->channels_6ghz, hwsim_channels_6ghz,
3248 sizeof(hwsim_channels_6ghz));
3249 memcpy(data->channels_s1g, hwsim_channels_s1g,
3250 sizeof(hwsim_channels_s1g));
3251 memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
3252
3253 for (band = NL80211_BAND_2GHZ; band < NUM_NL80211_BANDS; band++) {
3254 struct ieee80211_supported_band *sband = &data->bands[band];
3255
3256 sband->band = band;
3257
3258 switch (band) {
3259 case NL80211_BAND_2GHZ:
3260 sband->channels = data->channels_2ghz;
3261 sband->n_channels = ARRAY_SIZE(hwsim_channels_2ghz);
3262 sband->bitrates = data->rates;
3263 sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
3264 break;
3265 case NL80211_BAND_5GHZ:
3266 sband->channels = data->channels_5ghz;
3267 sband->n_channels = ARRAY_SIZE(hwsim_channels_5ghz);
3268 sband->bitrates = data->rates + 4;
3269 sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
3270
3271 sband->vht_cap.vht_supported = true;
3272 sband->vht_cap.cap =
3273 IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 |
3274 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ |
3275 IEEE80211_VHT_CAP_RXLDPC |
3276 IEEE80211_VHT_CAP_SHORT_GI_80 |
3277 IEEE80211_VHT_CAP_SHORT_GI_160 |
3278 IEEE80211_VHT_CAP_TXSTBC |
3279 IEEE80211_VHT_CAP_RXSTBC_4 |
3280 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
3281 sband->vht_cap.vht_mcs.rx_mcs_map =
3282 cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_9 << 0 |
3283 IEEE80211_VHT_MCS_SUPPORT_0_9 << 2 |
3284 IEEE80211_VHT_MCS_SUPPORT_0_9 << 4 |
3285 IEEE80211_VHT_MCS_SUPPORT_0_9 << 6 |
3286 IEEE80211_VHT_MCS_SUPPORT_0_9 << 8 |
3287 IEEE80211_VHT_MCS_SUPPORT_0_9 << 10 |
3288 IEEE80211_VHT_MCS_SUPPORT_0_9 << 12 |
3289 IEEE80211_VHT_MCS_SUPPORT_0_9 << 14);
3290 sband->vht_cap.vht_mcs.tx_mcs_map =
3291 sband->vht_cap.vht_mcs.rx_mcs_map;
3292 break;
3293 case NL80211_BAND_S1GHZ:
3294 memcpy(&sband->s1g_cap, &hwsim_s1g_cap,
3295 sizeof(sband->s1g_cap));
3296 sband->channels = data->channels_s1g;
3297 sband->n_channels = ARRAY_SIZE(hwsim_channels_s1g);
3298 break;
3299 default:
3300 continue;
3301 }
3302
3303 sband->ht_cap.ht_supported = true;
3304 sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
3305 IEEE80211_HT_CAP_GRN_FLD |
3306 IEEE80211_HT_CAP_SGI_20 |
3307 IEEE80211_HT_CAP_SGI_40 |
3308 IEEE80211_HT_CAP_DSSSCCK40;
3309 sband->ht_cap.ampdu_factor = 0x3;
3310 sband->ht_cap.ampdu_density = 0x6;
3311 memset(&sband->ht_cap.mcs, 0,
3312 sizeof(sband->ht_cap.mcs));
3313 sband->ht_cap.mcs.rx_mask[0] = 0xff;
3314 sband->ht_cap.mcs.rx_mask[1] = 0xff;
3315 sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
3316
3317 mac80211_hwsim_he_capab(sband);
3318
3319 hw->wiphy->bands[band] = sband;
3320 }
3321
3322 /* By default all radios belong to the first group */
3323 data->group = 1;
3324 mutex_init(&data->mutex);
3325
3326 data->netgroup = hwsim_net_get_netgroup(net);
3327 data->wmediumd = hwsim_net_get_wmediumd(net);
3328
3329 /* Enable frame retransmissions for lossy channels */
3330 hw->max_rates = 4;
3331 hw->max_rate_tries = 11;
3332
3333 hw->wiphy->vendor_commands = mac80211_hwsim_vendor_commands;
3334 hw->wiphy->n_vendor_commands =
3335 ARRAY_SIZE(mac80211_hwsim_vendor_commands);
3336 hw->wiphy->vendor_events = mac80211_hwsim_vendor_events;
3337 hw->wiphy->n_vendor_events = ARRAY_SIZE(mac80211_hwsim_vendor_events);
3338
3339 if (param->reg_strict)
3340 hw->wiphy->regulatory_flags |= REGULATORY_STRICT_REG;
3341 if (param->regd) {
3342 data->regd = param->regd;
3343 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG;
3344 wiphy_apply_custom_regulatory(hw->wiphy, param->regd);
3345 /* give the regulatory workqueue a chance to run */
3346 schedule_timeout_interruptible(1);
3347 }
3348
3349 if (param->no_vif)
3350 ieee80211_hw_set(hw, NO_AUTO_VIF);
3351
3352 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST);
3353
3354 hrtimer_init(&data->beacon_timer, CLOCK_MONOTONIC,
3355 HRTIMER_MODE_ABS_SOFT);
3356 data->beacon_timer.function = mac80211_hwsim_beacon;
3357
3358 err = ieee80211_register_hw(hw);
3359 if (err < 0) {
3360 pr_debug("mac80211_hwsim: ieee80211_register_hw failed (%d)\n",
3361 err);
3362 goto failed_hw;
3363 }
3364
3365 wiphy_dbg(hw->wiphy, "hwaddr %pM registered\n", hw->wiphy->perm_addr);
3366
3367 if (param->reg_alpha2) {
3368 data->alpha2[0] = param->reg_alpha2[0];
3369 data->alpha2[1] = param->reg_alpha2[1];
3370 regulatory_hint(hw->wiphy, param->reg_alpha2);
3371 }
3372
3373 data->debugfs = debugfs_create_dir("hwsim", hw->wiphy->debugfsdir);
3374 debugfs_create_file("ps", 0666, data->debugfs, data, &hwsim_fops_ps);
3375 debugfs_create_file("group", 0666, data->debugfs, data,
3376 &hwsim_fops_group);
3377 if (!data->use_chanctx)
3378 debugfs_create_file("dfs_simulate_radar", 0222,
3379 data->debugfs,
3380 data, &hwsim_simulate_radar);
3381
3382 spin_lock_bh(&hwsim_radio_lock);
3383 err = rhashtable_insert_fast(&hwsim_radios_rht, &data->rht,
3384 hwsim_rht_params);
3385 if (err < 0) {
3386 if (info) {
3387 GENL_SET_ERR_MSG(info, "perm addr already present");
3388 NL_SET_BAD_ATTR(info->extack,
3389 info->attrs[HWSIM_ATTR_PERM_ADDR]);
3390 }
3391 spin_unlock_bh(&hwsim_radio_lock);
3392 goto failed_final_insert;
3393 }
3394
3395 list_add_tail(&data->list, &hwsim_radios);
3396 hwsim_radios_generation++;
3397 spin_unlock_bh(&hwsim_radio_lock);
3398
3399 hwsim_mcast_new_radio(idx, info, param);
3400
3401 return idx;
3402
3403 failed_final_insert:
3404 debugfs_remove_recursive(data->debugfs);
3405 ieee80211_unregister_hw(data->hw);
3406 failed_hw:
3407 device_release_driver(data->dev);
3408 failed_bind:
3409 device_unregister(data->dev);
3410 failed_drvdata:
3411 ieee80211_free_hw(hw);
3412 failed:
3413 return err;
3414 }
3415
hwsim_mcast_del_radio(int id,const char * hwname,struct genl_info * info)3416 static void hwsim_mcast_del_radio(int id, const char *hwname,
3417 struct genl_info *info)
3418 {
3419 struct sk_buff *skb;
3420 void *data;
3421 int ret;
3422
3423 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
3424 if (!skb)
3425 return;
3426
3427 data = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
3428 HWSIM_CMD_DEL_RADIO);
3429 if (!data)
3430 goto error;
3431
3432 ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
3433 if (ret < 0)
3434 goto error;
3435
3436 ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME, strlen(hwname),
3437 hwname);
3438 if (ret < 0)
3439 goto error;
3440
3441 genlmsg_end(skb, data);
3442
3443 hwsim_mcast_config_msg(skb, info);
3444
3445 return;
3446
3447 error:
3448 nlmsg_free(skb);
3449 }
3450
mac80211_hwsim_del_radio(struct mac80211_hwsim_data * data,const char * hwname,struct genl_info * info)3451 static void mac80211_hwsim_del_radio(struct mac80211_hwsim_data *data,
3452 const char *hwname,
3453 struct genl_info *info)
3454 {
3455 hwsim_mcast_del_radio(data->idx, hwname, info);
3456 debugfs_remove_recursive(data->debugfs);
3457 ieee80211_unregister_hw(data->hw);
3458 device_release_driver(data->dev);
3459 device_unregister(data->dev);
3460 ieee80211_free_hw(data->hw);
3461 }
3462
mac80211_hwsim_get_radio(struct sk_buff * skb,struct mac80211_hwsim_data * data,u32 portid,u32 seq,struct netlink_callback * cb,int flags)3463 static int mac80211_hwsim_get_radio(struct sk_buff *skb,
3464 struct mac80211_hwsim_data *data,
3465 u32 portid, u32 seq,
3466 struct netlink_callback *cb, int flags)
3467 {
3468 void *hdr;
3469 struct hwsim_new_radio_params param = { };
3470 int res = -EMSGSIZE;
3471
3472 hdr = genlmsg_put(skb, portid, seq, &hwsim_genl_family, flags,
3473 HWSIM_CMD_GET_RADIO);
3474 if (!hdr)
3475 return -EMSGSIZE;
3476
3477 if (cb)
3478 genl_dump_check_consistent(cb, hdr);
3479
3480 if (data->alpha2[0] && data->alpha2[1])
3481 param.reg_alpha2 = data->alpha2;
3482
3483 param.reg_strict = !!(data->hw->wiphy->regulatory_flags &
3484 REGULATORY_STRICT_REG);
3485 param.p2p_device = !!(data->hw->wiphy->interface_modes &
3486 BIT(NL80211_IFTYPE_P2P_DEVICE));
3487 param.use_chanctx = data->use_chanctx;
3488 param.regd = data->regd;
3489 param.channels = data->channels;
3490 param.hwname = wiphy_name(data->hw->wiphy);
3491
3492 res = append_radio_msg(skb, data->idx, ¶m);
3493 if (res < 0)
3494 goto out_err;
3495
3496 genlmsg_end(skb, hdr);
3497 return 0;
3498
3499 out_err:
3500 genlmsg_cancel(skb, hdr);
3501 return res;
3502 }
3503
mac80211_hwsim_free(void)3504 static void mac80211_hwsim_free(void)
3505 {
3506 struct mac80211_hwsim_data *data;
3507
3508 spin_lock_bh(&hwsim_radio_lock);
3509 while ((data = list_first_entry_or_null(&hwsim_radios,
3510 struct mac80211_hwsim_data,
3511 list))) {
3512 list_del(&data->list);
3513 spin_unlock_bh(&hwsim_radio_lock);
3514 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
3515 NULL);
3516 spin_lock_bh(&hwsim_radio_lock);
3517 }
3518 spin_unlock_bh(&hwsim_radio_lock);
3519 class_destroy(hwsim_class);
3520 }
3521
3522 static const struct net_device_ops hwsim_netdev_ops = {
3523 .ndo_start_xmit = hwsim_mon_xmit,
3524 .ndo_set_mac_address = eth_mac_addr,
3525 .ndo_validate_addr = eth_validate_addr,
3526 };
3527
hwsim_mon_setup(struct net_device * dev)3528 static void hwsim_mon_setup(struct net_device *dev)
3529 {
3530 dev->netdev_ops = &hwsim_netdev_ops;
3531 dev->needs_free_netdev = true;
3532 ether_setup(dev);
3533 dev->priv_flags |= IFF_NO_QUEUE;
3534 dev->type = ARPHRD_IEEE80211_RADIOTAP;
3535 eth_zero_addr(dev->dev_addr);
3536 dev->dev_addr[0] = 0x12;
3537 }
3538
get_hwsim_data_ref_from_addr(const u8 * addr)3539 static struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(const u8 *addr)
3540 {
3541 return rhashtable_lookup_fast(&hwsim_radios_rht,
3542 addr,
3543 hwsim_rht_params);
3544 }
3545
hwsim_register_wmediumd(struct net * net,u32 portid)3546 static void hwsim_register_wmediumd(struct net *net, u32 portid)
3547 {
3548 struct mac80211_hwsim_data *data;
3549
3550 hwsim_net_set_wmediumd(net, portid);
3551
3552 spin_lock_bh(&hwsim_radio_lock);
3553 list_for_each_entry(data, &hwsim_radios, list) {
3554 if (data->netgroup == hwsim_net_get_netgroup(net))
3555 data->wmediumd = portid;
3556 }
3557 spin_unlock_bh(&hwsim_radio_lock);
3558 }
3559
hwsim_tx_info_frame_received_nl(struct sk_buff * skb_2,struct genl_info * info)3560 static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
3561 struct genl_info *info)
3562 {
3563
3564 struct ieee80211_hdr *hdr;
3565 struct mac80211_hwsim_data *data2;
3566 struct ieee80211_tx_info *txi;
3567 struct hwsim_tx_rate *tx_attempts;
3568 u64 ret_skb_cookie;
3569 struct sk_buff *skb, *tmp;
3570 const u8 *src;
3571 unsigned int hwsim_flags;
3572 int i;
3573 bool found = false;
3574
3575 if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
3576 !info->attrs[HWSIM_ATTR_FLAGS] ||
3577 !info->attrs[HWSIM_ATTR_COOKIE] ||
3578 !info->attrs[HWSIM_ATTR_SIGNAL] ||
3579 !info->attrs[HWSIM_ATTR_TX_INFO])
3580 goto out;
3581
3582 src = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
3583 hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
3584 ret_skb_cookie = nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
3585
3586 data2 = get_hwsim_data_ref_from_addr(src);
3587 if (!data2)
3588 goto out;
3589
3590 if (!hwsim_virtio_enabled) {
3591 if (hwsim_net_get_netgroup(genl_info_net(info)) !=
3592 data2->netgroup)
3593 goto out;
3594
3595 if (info->snd_portid != data2->wmediumd)
3596 goto out;
3597 }
3598
3599 /* look for the skb matching the cookie passed back from user */
3600 skb_queue_walk_safe(&data2->pending, skb, tmp) {
3601 u64 skb_cookie;
3602
3603 txi = IEEE80211_SKB_CB(skb);
3604 skb_cookie = (u64)(uintptr_t)txi->rate_driver_data[0];
3605
3606 if (skb_cookie == ret_skb_cookie) {
3607 skb_unlink(skb, &data2->pending);
3608 found = true;
3609 break;
3610 }
3611 }
3612
3613 /* not found */
3614 if (!found)
3615 goto out;
3616
3617 /* Tx info received because the frame was broadcasted on user space,
3618 so we get all the necessary info: tx attempts and skb control buff */
3619
3620 tx_attempts = (struct hwsim_tx_rate *)nla_data(
3621 info->attrs[HWSIM_ATTR_TX_INFO]);
3622
3623 /* now send back TX status */
3624 txi = IEEE80211_SKB_CB(skb);
3625
3626 ieee80211_tx_info_clear_status(txi);
3627
3628 for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
3629 txi->status.rates[i].idx = tx_attempts[i].idx;
3630 txi->status.rates[i].count = tx_attempts[i].count;
3631 }
3632
3633 txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
3634
3635 if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
3636 (hwsim_flags & HWSIM_TX_STAT_ACK)) {
3637 if (skb->len >= 16) {
3638 hdr = (struct ieee80211_hdr *) skb->data;
3639 mac80211_hwsim_monitor_ack(data2->channel,
3640 hdr->addr2);
3641 }
3642 txi->flags |= IEEE80211_TX_STAT_ACK;
3643 }
3644 ieee80211_tx_status_irqsafe(data2->hw, skb);
3645 return 0;
3646 out:
3647 return -EINVAL;
3648
3649 }
3650
hwsim_cloned_frame_received_nl(struct sk_buff * skb_2,struct genl_info * info)3651 static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
3652 struct genl_info *info)
3653 {
3654 struct mac80211_hwsim_data *data2;
3655 struct ieee80211_rx_status rx_status;
3656 struct ieee80211_hdr *hdr;
3657 const u8 *dst;
3658 int frame_data_len;
3659 void *frame_data;
3660 struct sk_buff *skb = NULL;
3661 struct ieee80211_channel *channel = NULL;
3662
3663 if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
3664 !info->attrs[HWSIM_ATTR_FRAME] ||
3665 !info->attrs[HWSIM_ATTR_RX_RATE] ||
3666 !info->attrs[HWSIM_ATTR_SIGNAL])
3667 goto out;
3668
3669 dst = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
3670 frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
3671 frame_data = (void *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
3672
3673 /* Allocate new skb here */
3674 skb = alloc_skb(frame_data_len, GFP_KERNEL);
3675 if (skb == NULL)
3676 goto err;
3677
3678 if (frame_data_len > IEEE80211_MAX_DATA_LEN)
3679 goto err;
3680
3681 /* Copy the data */
3682 skb_put_data(skb, frame_data, frame_data_len);
3683
3684 data2 = get_hwsim_data_ref_from_addr(dst);
3685 if (!data2)
3686 goto out;
3687
3688 if (data2->use_chanctx) {
3689 if (data2->tmp_chan)
3690 channel = data2->tmp_chan;
3691 else if (data2->chanctx)
3692 channel = data2->chanctx->def.chan;
3693 } else {
3694 channel = data2->channel;
3695 }
3696 if (!channel)
3697 goto out;
3698
3699 if (!hwsim_virtio_enabled) {
3700 if (hwsim_net_get_netgroup(genl_info_net(info)) !=
3701 data2->netgroup)
3702 goto out;
3703
3704 if (info->snd_portid != data2->wmediumd)
3705 goto out;
3706 }
3707
3708 /* check if radio is configured properly */
3709
3710 if ((data2->idle && !data2->tmp_chan) || !data2->started)
3711 goto out;
3712
3713 /* A frame is received from user space */
3714 memset(&rx_status, 0, sizeof(rx_status));
3715 if (info->attrs[HWSIM_ATTR_FREQ]) {
3716 /* throw away off-channel packets, but allow both the temporary
3717 * ("hw" scan/remain-on-channel) and regular channel, since the
3718 * internal datapath also allows this
3719 */
3720 mutex_lock(&data2->mutex);
3721 rx_status.freq = nla_get_u32(info->attrs[HWSIM_ATTR_FREQ]);
3722
3723 if (rx_status.freq != channel->center_freq) {
3724 mutex_unlock(&data2->mutex);
3725 goto out;
3726 }
3727 mutex_unlock(&data2->mutex);
3728 } else {
3729 rx_status.freq = channel->center_freq;
3730 }
3731
3732 rx_status.band = channel->band;
3733 rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
3734 rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
3735
3736 hdr = (void *)skb->data;
3737
3738 if (ieee80211_is_beacon(hdr->frame_control) ||
3739 ieee80211_is_probe_resp(hdr->frame_control))
3740 rx_status.boottime_ns = ktime_get_boottime_ns();
3741
3742 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
3743 data2->rx_pkts++;
3744 data2->rx_bytes += skb->len;
3745 ieee80211_rx_irqsafe(data2->hw, skb);
3746
3747 return 0;
3748 err:
3749 pr_debug("mac80211_hwsim: error occurred in %s\n", __func__);
3750 out:
3751 dev_kfree_skb(skb);
3752 return -EINVAL;
3753 }
3754
hwsim_register_received_nl(struct sk_buff * skb_2,struct genl_info * info)3755 static int hwsim_register_received_nl(struct sk_buff *skb_2,
3756 struct genl_info *info)
3757 {
3758 struct net *net = genl_info_net(info);
3759 struct mac80211_hwsim_data *data;
3760 int chans = 1;
3761
3762 spin_lock_bh(&hwsim_radio_lock);
3763 list_for_each_entry(data, &hwsim_radios, list)
3764 chans = max(chans, data->channels);
3765 spin_unlock_bh(&hwsim_radio_lock);
3766
3767 /* In the future we should revise the userspace API and allow it
3768 * to set a flag that it does support multi-channel, then we can
3769 * let this pass conditionally on the flag.
3770 * For current userspace, prohibit it since it won't work right.
3771 */
3772 if (chans > 1)
3773 return -EOPNOTSUPP;
3774
3775 if (hwsim_net_get_wmediumd(net))
3776 return -EBUSY;
3777
3778 hwsim_register_wmediumd(net, info->snd_portid);
3779
3780 pr_debug("mac80211_hwsim: received a REGISTER, "
3781 "switching to wmediumd mode with pid %d\n", info->snd_portid);
3782
3783 return 0;
3784 }
3785
3786 /* ensures ciphers only include ciphers listed in 'hwsim_ciphers' array */
hwsim_known_ciphers(const u32 * ciphers,int n_ciphers)3787 static bool hwsim_known_ciphers(const u32 *ciphers, int n_ciphers)
3788 {
3789 int i;
3790
3791 for (i = 0; i < n_ciphers; i++) {
3792 int j;
3793 int found = 0;
3794
3795 for (j = 0; j < ARRAY_SIZE(hwsim_ciphers); j++) {
3796 if (ciphers[i] == hwsim_ciphers[j]) {
3797 found = 1;
3798 break;
3799 }
3800 }
3801
3802 if (!found)
3803 return false;
3804 }
3805
3806 return true;
3807 }
3808
hwsim_new_radio_nl(struct sk_buff * msg,struct genl_info * info)3809 static int hwsim_new_radio_nl(struct sk_buff *msg, struct genl_info *info)
3810 {
3811 struct hwsim_new_radio_params param = { 0 };
3812 const char *hwname = NULL;
3813 int ret;
3814
3815 param.reg_strict = info->attrs[HWSIM_ATTR_REG_STRICT_REG];
3816 param.p2p_device = info->attrs[HWSIM_ATTR_SUPPORT_P2P_DEVICE];
3817 param.channels = channels;
3818 param.destroy_on_close =
3819 info->attrs[HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE];
3820
3821 if (info->attrs[HWSIM_ATTR_CHANNELS])
3822 param.channels = nla_get_u32(info->attrs[HWSIM_ATTR_CHANNELS]);
3823
3824 if (param.channels < 1) {
3825 GENL_SET_ERR_MSG(info, "must have at least one channel");
3826 return -EINVAL;
3827 }
3828
3829 if (info->attrs[HWSIM_ATTR_NO_VIF])
3830 param.no_vif = true;
3831
3832 if (info->attrs[HWSIM_ATTR_USE_CHANCTX])
3833 param.use_chanctx = true;
3834 else
3835 param.use_chanctx = (param.channels > 1);
3836
3837 if (info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2])
3838 param.reg_alpha2 =
3839 nla_data(info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2]);
3840
3841 if (info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]) {
3842 u32 idx = nla_get_u32(info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]);
3843
3844 if (idx >= ARRAY_SIZE(hwsim_world_regdom_custom))
3845 return -EINVAL;
3846
3847 idx = array_index_nospec(idx,
3848 ARRAY_SIZE(hwsim_world_regdom_custom));
3849 param.regd = hwsim_world_regdom_custom[idx];
3850 }
3851
3852 if (info->attrs[HWSIM_ATTR_PERM_ADDR]) {
3853 if (!is_valid_ether_addr(
3854 nla_data(info->attrs[HWSIM_ATTR_PERM_ADDR]))) {
3855 GENL_SET_ERR_MSG(info,"MAC is no valid source addr");
3856 NL_SET_BAD_ATTR(info->extack,
3857 info->attrs[HWSIM_ATTR_PERM_ADDR]);
3858 return -EINVAL;
3859 }
3860
3861 param.perm_addr = nla_data(info->attrs[HWSIM_ATTR_PERM_ADDR]);
3862 }
3863
3864 if (info->attrs[HWSIM_ATTR_IFTYPE_SUPPORT]) {
3865 param.iftypes =
3866 nla_get_u32(info->attrs[HWSIM_ATTR_IFTYPE_SUPPORT]);
3867
3868 if (param.iftypes & ~HWSIM_IFTYPE_SUPPORT_MASK) {
3869 NL_SET_ERR_MSG_ATTR(info->extack,
3870 info->attrs[HWSIM_ATTR_IFTYPE_SUPPORT],
3871 "cannot support more iftypes than kernel");
3872 return -EINVAL;
3873 }
3874 } else {
3875 param.iftypes = HWSIM_IFTYPE_SUPPORT_MASK;
3876 }
3877
3878 /* ensure both flag and iftype support is honored */
3879 if (param.p2p_device ||
3880 param.iftypes & BIT(NL80211_IFTYPE_P2P_DEVICE)) {
3881 param.iftypes |= BIT(NL80211_IFTYPE_P2P_DEVICE);
3882 param.p2p_device = true;
3883 }
3884
3885 if (info->attrs[HWSIM_ATTR_CIPHER_SUPPORT]) {
3886 u32 len = nla_len(info->attrs[HWSIM_ATTR_CIPHER_SUPPORT]);
3887
3888 param.ciphers =
3889 nla_data(info->attrs[HWSIM_ATTR_CIPHER_SUPPORT]);
3890
3891 if (len % sizeof(u32)) {
3892 NL_SET_ERR_MSG_ATTR(info->extack,
3893 info->attrs[HWSIM_ATTR_CIPHER_SUPPORT],
3894 "bad cipher list length");
3895 return -EINVAL;
3896 }
3897
3898 param.n_ciphers = len / sizeof(u32);
3899
3900 if (param.n_ciphers > ARRAY_SIZE(hwsim_ciphers)) {
3901 NL_SET_ERR_MSG_ATTR(info->extack,
3902 info->attrs[HWSIM_ATTR_CIPHER_SUPPORT],
3903 "too many ciphers specified");
3904 return -EINVAL;
3905 }
3906
3907 if (!hwsim_known_ciphers(param.ciphers, param.n_ciphers)) {
3908 NL_SET_ERR_MSG_ATTR(info->extack,
3909 info->attrs[HWSIM_ATTR_CIPHER_SUPPORT],
3910 "unsupported ciphers specified");
3911 return -EINVAL;
3912 }
3913 }
3914
3915 if (info->attrs[HWSIM_ATTR_RADIO_NAME]) {
3916 hwname = kstrndup((char *)nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]),
3917 nla_len(info->attrs[HWSIM_ATTR_RADIO_NAME]),
3918 GFP_KERNEL);
3919 if (!hwname)
3920 return -ENOMEM;
3921 param.hwname = hwname;
3922 }
3923
3924 ret = mac80211_hwsim_new_radio(info, ¶m);
3925 kfree(hwname);
3926 return ret;
3927 }
3928
hwsim_del_radio_nl(struct sk_buff * msg,struct genl_info * info)3929 static int hwsim_del_radio_nl(struct sk_buff *msg, struct genl_info *info)
3930 {
3931 struct mac80211_hwsim_data *data;
3932 s64 idx = -1;
3933 const char *hwname = NULL;
3934
3935 if (info->attrs[HWSIM_ATTR_RADIO_ID]) {
3936 idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
3937 } else if (info->attrs[HWSIM_ATTR_RADIO_NAME]) {
3938 hwname = kstrndup((char *)nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]),
3939 nla_len(info->attrs[HWSIM_ATTR_RADIO_NAME]),
3940 GFP_KERNEL);
3941 if (!hwname)
3942 return -ENOMEM;
3943 } else
3944 return -EINVAL;
3945
3946 spin_lock_bh(&hwsim_radio_lock);
3947 list_for_each_entry(data, &hwsim_radios, list) {
3948 if (idx >= 0) {
3949 if (data->idx != idx)
3950 continue;
3951 } else {
3952 if (!hwname ||
3953 strcmp(hwname, wiphy_name(data->hw->wiphy)))
3954 continue;
3955 }
3956
3957 if (!net_eq(wiphy_net(data->hw->wiphy), genl_info_net(info)))
3958 continue;
3959
3960 list_del(&data->list);
3961 rhashtable_remove_fast(&hwsim_radios_rht, &data->rht,
3962 hwsim_rht_params);
3963 hwsim_radios_generation++;
3964 spin_unlock_bh(&hwsim_radio_lock);
3965 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
3966 info);
3967 kfree(hwname);
3968 return 0;
3969 }
3970 spin_unlock_bh(&hwsim_radio_lock);
3971
3972 kfree(hwname);
3973 return -ENODEV;
3974 }
3975
hwsim_get_radio_nl(struct sk_buff * msg,struct genl_info * info)3976 static int hwsim_get_radio_nl(struct sk_buff *msg, struct genl_info *info)
3977 {
3978 struct mac80211_hwsim_data *data;
3979 struct sk_buff *skb;
3980 int idx, res = -ENODEV;
3981
3982 if (!info->attrs[HWSIM_ATTR_RADIO_ID])
3983 return -EINVAL;
3984 idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
3985
3986 spin_lock_bh(&hwsim_radio_lock);
3987 list_for_each_entry(data, &hwsim_radios, list) {
3988 if (data->idx != idx)
3989 continue;
3990
3991 if (!net_eq(wiphy_net(data->hw->wiphy), genl_info_net(info)))
3992 continue;
3993
3994 skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
3995 if (!skb) {
3996 res = -ENOMEM;
3997 goto out_err;
3998 }
3999
4000 res = mac80211_hwsim_get_radio(skb, data, info->snd_portid,
4001 info->snd_seq, NULL, 0);
4002 if (res < 0) {
4003 nlmsg_free(skb);
4004 goto out_err;
4005 }
4006
4007 res = genlmsg_reply(skb, info);
4008 break;
4009 }
4010
4011 out_err:
4012 spin_unlock_bh(&hwsim_radio_lock);
4013
4014 return res;
4015 }
4016
hwsim_dump_radio_nl(struct sk_buff * skb,struct netlink_callback * cb)4017 static int hwsim_dump_radio_nl(struct sk_buff *skb,
4018 struct netlink_callback *cb)
4019 {
4020 int last_idx = cb->args[0] - 1;
4021 struct mac80211_hwsim_data *data = NULL;
4022 int res = 0;
4023 void *hdr;
4024
4025 spin_lock_bh(&hwsim_radio_lock);
4026 cb->seq = hwsim_radios_generation;
4027
4028 if (last_idx >= hwsim_radio_idx-1)
4029 goto done;
4030
4031 list_for_each_entry(data, &hwsim_radios, list) {
4032 if (data->idx <= last_idx)
4033 continue;
4034
4035 if (!net_eq(wiphy_net(data->hw->wiphy), sock_net(skb->sk)))
4036 continue;
4037
4038 res = mac80211_hwsim_get_radio(skb, data,
4039 NETLINK_CB(cb->skb).portid,
4040 cb->nlh->nlmsg_seq, cb,
4041 NLM_F_MULTI);
4042 if (res < 0)
4043 break;
4044
4045 last_idx = data->idx;
4046 }
4047
4048 cb->args[0] = last_idx + 1;
4049
4050 /* list changed, but no new element sent, set interrupted flag */
4051 if (skb->len == 0 && cb->prev_seq && cb->seq != cb->prev_seq) {
4052 hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid,
4053 cb->nlh->nlmsg_seq, &hwsim_genl_family,
4054 NLM_F_MULTI, HWSIM_CMD_GET_RADIO);
4055 if (hdr) {
4056 genl_dump_check_consistent(cb, hdr);
4057 genlmsg_end(skb, hdr);
4058 } else {
4059 res = -EMSGSIZE;
4060 }
4061 }
4062
4063 done:
4064 spin_unlock_bh(&hwsim_radio_lock);
4065 return res ?: skb->len;
4066 }
4067
4068 /* Generic Netlink operations array */
4069 static const struct genl_small_ops hwsim_ops[] = {
4070 {
4071 .cmd = HWSIM_CMD_REGISTER,
4072 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
4073 .doit = hwsim_register_received_nl,
4074 .flags = GENL_UNS_ADMIN_PERM,
4075 },
4076 {
4077 .cmd = HWSIM_CMD_FRAME,
4078 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
4079 .doit = hwsim_cloned_frame_received_nl,
4080 },
4081 {
4082 .cmd = HWSIM_CMD_TX_INFO_FRAME,
4083 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
4084 .doit = hwsim_tx_info_frame_received_nl,
4085 },
4086 {
4087 .cmd = HWSIM_CMD_NEW_RADIO,
4088 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
4089 .doit = hwsim_new_radio_nl,
4090 .flags = GENL_UNS_ADMIN_PERM,
4091 },
4092 {
4093 .cmd = HWSIM_CMD_DEL_RADIO,
4094 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
4095 .doit = hwsim_del_radio_nl,
4096 .flags = GENL_UNS_ADMIN_PERM,
4097 },
4098 {
4099 .cmd = HWSIM_CMD_GET_RADIO,
4100 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
4101 .doit = hwsim_get_radio_nl,
4102 .dumpit = hwsim_dump_radio_nl,
4103 },
4104 };
4105
4106 static struct genl_family hwsim_genl_family __ro_after_init = {
4107 .name = "MAC80211_HWSIM",
4108 .version = 1,
4109 .maxattr = HWSIM_ATTR_MAX,
4110 .policy = hwsim_genl_policy,
4111 .netnsok = true,
4112 .module = THIS_MODULE,
4113 .small_ops = hwsim_ops,
4114 .n_small_ops = ARRAY_SIZE(hwsim_ops),
4115 .mcgrps = hwsim_mcgrps,
4116 .n_mcgrps = ARRAY_SIZE(hwsim_mcgrps),
4117 };
4118
remove_user_radios(u32 portid)4119 static void remove_user_radios(u32 portid)
4120 {
4121 struct mac80211_hwsim_data *entry, *tmp;
4122 LIST_HEAD(list);
4123
4124 spin_lock_bh(&hwsim_radio_lock);
4125 list_for_each_entry_safe(entry, tmp, &hwsim_radios, list) {
4126 if (entry->destroy_on_close && entry->portid == portid) {
4127 list_move(&entry->list, &list);
4128 rhashtable_remove_fast(&hwsim_radios_rht, &entry->rht,
4129 hwsim_rht_params);
4130 hwsim_radios_generation++;
4131 }
4132 }
4133 spin_unlock_bh(&hwsim_radio_lock);
4134
4135 list_for_each_entry_safe(entry, tmp, &list, list) {
4136 list_del(&entry->list);
4137 mac80211_hwsim_del_radio(entry, wiphy_name(entry->hw->wiphy),
4138 NULL);
4139 }
4140 }
4141
mac80211_hwsim_netlink_notify(struct notifier_block * nb,unsigned long state,void * _notify)4142 static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
4143 unsigned long state,
4144 void *_notify)
4145 {
4146 struct netlink_notify *notify = _notify;
4147
4148 if (state != NETLINK_URELEASE)
4149 return NOTIFY_DONE;
4150
4151 remove_user_radios(notify->portid);
4152
4153 if (notify->portid == hwsim_net_get_wmediumd(notify->net)) {
4154 printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
4155 " socket, switching to perfect channel medium\n");
4156 hwsim_register_wmediumd(notify->net, 0);
4157 }
4158 return NOTIFY_DONE;
4159
4160 }
4161
4162 static struct notifier_block hwsim_netlink_notifier = {
4163 .notifier_call = mac80211_hwsim_netlink_notify,
4164 };
4165
hwsim_init_netlink(void)4166 static int __init hwsim_init_netlink(void)
4167 {
4168 int rc;
4169
4170 printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
4171
4172 rc = genl_register_family(&hwsim_genl_family);
4173 if (rc)
4174 goto failure;
4175
4176 rc = netlink_register_notifier(&hwsim_netlink_notifier);
4177 if (rc) {
4178 genl_unregister_family(&hwsim_genl_family);
4179 goto failure;
4180 }
4181
4182 return 0;
4183
4184 failure:
4185 pr_debug("mac80211_hwsim: error occurred in %s\n", __func__);
4186 return -EINVAL;
4187 }
4188
hwsim_init_net(struct net * net)4189 static __net_init int hwsim_init_net(struct net *net)
4190 {
4191 return hwsim_net_set_netgroup(net);
4192 }
4193
hwsim_exit_net(struct net * net)4194 static void __net_exit hwsim_exit_net(struct net *net)
4195 {
4196 struct mac80211_hwsim_data *data, *tmp;
4197 LIST_HEAD(list);
4198
4199 spin_lock_bh(&hwsim_radio_lock);
4200 list_for_each_entry_safe(data, tmp, &hwsim_radios, list) {
4201 if (!net_eq(wiphy_net(data->hw->wiphy), net))
4202 continue;
4203
4204 /* Radios created in init_net are returned to init_net. */
4205 if (data->netgroup == hwsim_net_get_netgroup(&init_net))
4206 continue;
4207
4208 list_move(&data->list, &list);
4209 rhashtable_remove_fast(&hwsim_radios_rht, &data->rht,
4210 hwsim_rht_params);
4211 hwsim_radios_generation++;
4212 }
4213 spin_unlock_bh(&hwsim_radio_lock);
4214
4215 list_for_each_entry_safe(data, tmp, &list, list) {
4216 list_del(&data->list);
4217 mac80211_hwsim_del_radio(data,
4218 wiphy_name(data->hw->wiphy),
4219 NULL);
4220 }
4221
4222 ida_simple_remove(&hwsim_netgroup_ida, hwsim_net_get_netgroup(net));
4223 }
4224
4225 static struct pernet_operations hwsim_net_ops = {
4226 .init = hwsim_init_net,
4227 .exit = hwsim_exit_net,
4228 .id = &hwsim_net_id,
4229 .size = sizeof(struct hwsim_net),
4230 };
4231
hwsim_exit_netlink(void)4232 static void hwsim_exit_netlink(void)
4233 {
4234 /* unregister the notifier */
4235 netlink_unregister_notifier(&hwsim_netlink_notifier);
4236 /* unregister the family */
4237 genl_unregister_family(&hwsim_genl_family);
4238 }
4239
4240 #if IS_REACHABLE(CONFIG_VIRTIO)
hwsim_virtio_tx_done(struct virtqueue * vq)4241 static void hwsim_virtio_tx_done(struct virtqueue *vq)
4242 {
4243 unsigned int len;
4244 struct sk_buff *skb;
4245 unsigned long flags;
4246
4247 spin_lock_irqsave(&hwsim_virtio_lock, flags);
4248 while ((skb = virtqueue_get_buf(vq, &len)))
4249 nlmsg_free(skb);
4250 spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
4251 }
4252
hwsim_virtio_handle_cmd(struct sk_buff * skb)4253 static int hwsim_virtio_handle_cmd(struct sk_buff *skb)
4254 {
4255 struct nlmsghdr *nlh;
4256 struct genlmsghdr *gnlh;
4257 struct nlattr *tb[HWSIM_ATTR_MAX + 1];
4258 struct genl_info info = {};
4259 int err;
4260
4261 nlh = nlmsg_hdr(skb);
4262 gnlh = nlmsg_data(nlh);
4263 err = genlmsg_parse(nlh, &hwsim_genl_family, tb, HWSIM_ATTR_MAX,
4264 hwsim_genl_policy, NULL);
4265 if (err) {
4266 pr_err_ratelimited("hwsim: genlmsg_parse returned %d\n", err);
4267 return err;
4268 }
4269
4270 info.attrs = tb;
4271
4272 switch (gnlh->cmd) {
4273 case HWSIM_CMD_FRAME:
4274 hwsim_cloned_frame_received_nl(skb, &info);
4275 break;
4276 case HWSIM_CMD_TX_INFO_FRAME:
4277 hwsim_tx_info_frame_received_nl(skb, &info);
4278 break;
4279 default:
4280 pr_err_ratelimited("hwsim: invalid cmd: %d\n", gnlh->cmd);
4281 return -EPROTO;
4282 }
4283 return 0;
4284 }
4285
hwsim_virtio_rx_work(struct work_struct * work)4286 static void hwsim_virtio_rx_work(struct work_struct *work)
4287 {
4288 struct virtqueue *vq;
4289 unsigned int len;
4290 struct sk_buff *skb;
4291 struct scatterlist sg[1];
4292 int err;
4293 unsigned long flags;
4294
4295 spin_lock_irqsave(&hwsim_virtio_lock, flags);
4296 if (!hwsim_virtio_enabled)
4297 goto out_unlock;
4298
4299 skb = virtqueue_get_buf(hwsim_vqs[HWSIM_VQ_RX], &len);
4300 if (!skb)
4301 goto out_unlock;
4302 spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
4303
4304 skb->data = skb->head;
4305 skb_set_tail_pointer(skb, len);
4306 hwsim_virtio_handle_cmd(skb);
4307
4308 spin_lock_irqsave(&hwsim_virtio_lock, flags);
4309 if (!hwsim_virtio_enabled) {
4310 nlmsg_free(skb);
4311 goto out_unlock;
4312 }
4313 vq = hwsim_vqs[HWSIM_VQ_RX];
4314 sg_init_one(sg, skb->head, skb_end_offset(skb));
4315 err = virtqueue_add_inbuf(vq, sg, 1, skb, GFP_ATOMIC);
4316 if (WARN(err, "virtqueue_add_inbuf returned %d\n", err))
4317 nlmsg_free(skb);
4318 else
4319 virtqueue_kick(vq);
4320 schedule_work(&hwsim_virtio_rx);
4321
4322 out_unlock:
4323 spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
4324 }
4325
hwsim_virtio_rx_done(struct virtqueue * vq)4326 static void hwsim_virtio_rx_done(struct virtqueue *vq)
4327 {
4328 schedule_work(&hwsim_virtio_rx);
4329 }
4330
init_vqs(struct virtio_device * vdev)4331 static int init_vqs(struct virtio_device *vdev)
4332 {
4333 vq_callback_t *callbacks[HWSIM_NUM_VQS] = {
4334 [HWSIM_VQ_TX] = hwsim_virtio_tx_done,
4335 [HWSIM_VQ_RX] = hwsim_virtio_rx_done,
4336 };
4337 const char *names[HWSIM_NUM_VQS] = {
4338 [HWSIM_VQ_TX] = "tx",
4339 [HWSIM_VQ_RX] = "rx",
4340 };
4341
4342 return virtio_find_vqs(vdev, HWSIM_NUM_VQS,
4343 hwsim_vqs, callbacks, names, NULL);
4344 }
4345
fill_vq(struct virtqueue * vq)4346 static int fill_vq(struct virtqueue *vq)
4347 {
4348 int i, err;
4349 struct sk_buff *skb;
4350 struct scatterlist sg[1];
4351
4352 for (i = 0; i < virtqueue_get_vring_size(vq); i++) {
4353 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
4354 if (!skb)
4355 return -ENOMEM;
4356
4357 sg_init_one(sg, skb->head, skb_end_offset(skb));
4358 err = virtqueue_add_inbuf(vq, sg, 1, skb, GFP_KERNEL);
4359 if (err) {
4360 nlmsg_free(skb);
4361 return err;
4362 }
4363 }
4364 virtqueue_kick(vq);
4365 return 0;
4366 }
4367
remove_vqs(struct virtio_device * vdev)4368 static void remove_vqs(struct virtio_device *vdev)
4369 {
4370 int i;
4371
4372 vdev->config->reset(vdev);
4373
4374 for (i = 0; i < ARRAY_SIZE(hwsim_vqs); i++) {
4375 struct virtqueue *vq = hwsim_vqs[i];
4376 struct sk_buff *skb;
4377
4378 while ((skb = virtqueue_detach_unused_buf(vq)))
4379 nlmsg_free(skb);
4380 }
4381
4382 vdev->config->del_vqs(vdev);
4383 }
4384
hwsim_virtio_probe(struct virtio_device * vdev)4385 static int hwsim_virtio_probe(struct virtio_device *vdev)
4386 {
4387 int err;
4388 unsigned long flags;
4389
4390 spin_lock_irqsave(&hwsim_virtio_lock, flags);
4391 if (hwsim_virtio_enabled) {
4392 spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
4393 return -EEXIST;
4394 }
4395 spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
4396
4397 err = init_vqs(vdev);
4398 if (err)
4399 return err;
4400
4401 err = fill_vq(hwsim_vqs[HWSIM_VQ_RX]);
4402 if (err)
4403 goto out_remove;
4404
4405 spin_lock_irqsave(&hwsim_virtio_lock, flags);
4406 hwsim_virtio_enabled = true;
4407 spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
4408
4409 schedule_work(&hwsim_virtio_rx);
4410 return 0;
4411
4412 out_remove:
4413 remove_vqs(vdev);
4414 return err;
4415 }
4416
hwsim_virtio_remove(struct virtio_device * vdev)4417 static void hwsim_virtio_remove(struct virtio_device *vdev)
4418 {
4419 hwsim_virtio_enabled = false;
4420
4421 cancel_work_sync(&hwsim_virtio_rx);
4422
4423 remove_vqs(vdev);
4424 }
4425
4426 /* MAC80211_HWSIM virtio device id table */
4427 static const struct virtio_device_id id_table[] = {
4428 { VIRTIO_ID_MAC80211_HWSIM, VIRTIO_DEV_ANY_ID },
4429 { 0 }
4430 };
4431 MODULE_DEVICE_TABLE(virtio, id_table);
4432
4433 static struct virtio_driver virtio_hwsim = {
4434 .driver.name = KBUILD_MODNAME,
4435 .driver.owner = THIS_MODULE,
4436 .id_table = id_table,
4437 .probe = hwsim_virtio_probe,
4438 .remove = hwsim_virtio_remove,
4439 };
4440
hwsim_register_virtio_driver(void)4441 static int hwsim_register_virtio_driver(void)
4442 {
4443 return register_virtio_driver(&virtio_hwsim);
4444 }
4445
hwsim_unregister_virtio_driver(void)4446 static void hwsim_unregister_virtio_driver(void)
4447 {
4448 unregister_virtio_driver(&virtio_hwsim);
4449 }
4450 #else
hwsim_register_virtio_driver(void)4451 static inline int hwsim_register_virtio_driver(void)
4452 {
4453 return 0;
4454 }
4455
hwsim_unregister_virtio_driver(void)4456 static inline void hwsim_unregister_virtio_driver(void)
4457 {
4458 }
4459 #endif
4460
init_mac80211_hwsim(void)4461 static int __init init_mac80211_hwsim(void)
4462 {
4463 int i, err;
4464
4465 if (radios < 0 || radios > 100)
4466 return -EINVAL;
4467
4468 if (channels < 1)
4469 return -EINVAL;
4470
4471 err = rhashtable_init(&hwsim_radios_rht, &hwsim_rht_params);
4472 if (err)
4473 return err;
4474
4475 err = register_pernet_device(&hwsim_net_ops);
4476 if (err)
4477 goto out_free_rht;
4478
4479 err = platform_driver_register(&mac80211_hwsim_driver);
4480 if (err)
4481 goto out_unregister_pernet;
4482
4483 err = hwsim_init_netlink();
4484 if (err)
4485 goto out_unregister_driver;
4486
4487 err = hwsim_register_virtio_driver();
4488 if (err)
4489 goto out_exit_netlink;
4490
4491 hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
4492 if (IS_ERR(hwsim_class)) {
4493 err = PTR_ERR(hwsim_class);
4494 goto out_exit_virtio;
4495 }
4496
4497 hwsim_init_s1g_channels(hwsim_channels_s1g);
4498
4499 for (i = 0; i < radios; i++) {
4500 struct hwsim_new_radio_params param = { 0 };
4501
4502 param.channels = channels;
4503
4504 switch (regtest) {
4505 case HWSIM_REGTEST_DIFF_COUNTRY:
4506 if (i < ARRAY_SIZE(hwsim_alpha2s))
4507 param.reg_alpha2 = hwsim_alpha2s[i];
4508 break;
4509 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
4510 if (!i)
4511 param.reg_alpha2 = hwsim_alpha2s[0];
4512 break;
4513 case HWSIM_REGTEST_STRICT_ALL:
4514 param.reg_strict = true;
4515 fallthrough;
4516 case HWSIM_REGTEST_DRIVER_REG_ALL:
4517 param.reg_alpha2 = hwsim_alpha2s[0];
4518 break;
4519 case HWSIM_REGTEST_WORLD_ROAM:
4520 if (i == 0)
4521 param.regd = &hwsim_world_regdom_custom_01;
4522 break;
4523 case HWSIM_REGTEST_CUSTOM_WORLD:
4524 param.regd = &hwsim_world_regdom_custom_01;
4525 break;
4526 case HWSIM_REGTEST_CUSTOM_WORLD_2:
4527 if (i == 0)
4528 param.regd = &hwsim_world_regdom_custom_01;
4529 else if (i == 1)
4530 param.regd = &hwsim_world_regdom_custom_02;
4531 break;
4532 case HWSIM_REGTEST_STRICT_FOLLOW:
4533 if (i == 0) {
4534 param.reg_strict = true;
4535 param.reg_alpha2 = hwsim_alpha2s[0];
4536 }
4537 break;
4538 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
4539 if (i == 0) {
4540 param.reg_strict = true;
4541 param.reg_alpha2 = hwsim_alpha2s[0];
4542 } else if (i == 1) {
4543 param.reg_alpha2 = hwsim_alpha2s[1];
4544 }
4545 break;
4546 case HWSIM_REGTEST_ALL:
4547 switch (i) {
4548 case 0:
4549 param.regd = &hwsim_world_regdom_custom_01;
4550 break;
4551 case 1:
4552 param.regd = &hwsim_world_regdom_custom_02;
4553 break;
4554 case 2:
4555 param.reg_alpha2 = hwsim_alpha2s[0];
4556 break;
4557 case 3:
4558 param.reg_alpha2 = hwsim_alpha2s[1];
4559 break;
4560 case 4:
4561 param.reg_strict = true;
4562 param.reg_alpha2 = hwsim_alpha2s[2];
4563 break;
4564 }
4565 break;
4566 default:
4567 break;
4568 }
4569
4570 param.p2p_device = support_p2p_device;
4571 param.use_chanctx = channels > 1;
4572 param.iftypes = HWSIM_IFTYPE_SUPPORT_MASK;
4573 if (param.p2p_device)
4574 param.iftypes |= BIT(NL80211_IFTYPE_P2P_DEVICE);
4575
4576 err = mac80211_hwsim_new_radio(NULL, ¶m);
4577 if (err < 0)
4578 goto out_free_radios;
4579 }
4580
4581 hwsim_mon = alloc_netdev(0, "hwsim%d", NET_NAME_UNKNOWN,
4582 hwsim_mon_setup);
4583 if (hwsim_mon == NULL) {
4584 err = -ENOMEM;
4585 goto out_free_radios;
4586 }
4587
4588 rtnl_lock();
4589 err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
4590 if (err < 0) {
4591 rtnl_unlock();
4592 goto out_free_mon;
4593 }
4594
4595 err = register_netdevice(hwsim_mon);
4596 if (err < 0) {
4597 rtnl_unlock();
4598 goto out_free_mon;
4599 }
4600 rtnl_unlock();
4601
4602 return 0;
4603
4604 out_free_mon:
4605 free_netdev(hwsim_mon);
4606 out_free_radios:
4607 mac80211_hwsim_free();
4608 out_exit_virtio:
4609 hwsim_unregister_virtio_driver();
4610 out_exit_netlink:
4611 hwsim_exit_netlink();
4612 out_unregister_driver:
4613 platform_driver_unregister(&mac80211_hwsim_driver);
4614 out_unregister_pernet:
4615 unregister_pernet_device(&hwsim_net_ops);
4616 out_free_rht:
4617 rhashtable_destroy(&hwsim_radios_rht);
4618 return err;
4619 }
4620 module_init(init_mac80211_hwsim);
4621
exit_mac80211_hwsim(void)4622 static void __exit exit_mac80211_hwsim(void)
4623 {
4624 pr_debug("mac80211_hwsim: unregister radios\n");
4625
4626 hwsim_unregister_virtio_driver();
4627 hwsim_exit_netlink();
4628
4629 mac80211_hwsim_free();
4630
4631 rhashtable_destroy(&hwsim_radios_rht);
4632 unregister_netdev(hwsim_mon);
4633 platform_driver_unregister(&mac80211_hwsim_driver);
4634 unregister_pernet_device(&hwsim_net_ops);
4635 }
4636 module_exit(exit_mac80211_hwsim);
4637
