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Merge tag 'block-5.11-2021-01-10' of git://git.kernel.dk/linux-block
[linux/fpc-iii.git] / drivers / net / wireless / mac80211_hwsim.c
blob3b3fc7c9c91dc1b0f391d5fac0f74f8c691fd8a7
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
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
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
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
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
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
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
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
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
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
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
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
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
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 static const struct ieee80211_channel hwsim_channels_2ghz[] = {
315 CHAN2G(2412), /* Channel 1 */
316 CHAN2G(2417), /* Channel 2 */
317 CHAN2G(2422), /* Channel 3 */
318 CHAN2G(2427), /* Channel 4 */
319 CHAN2G(2432), /* Channel 5 */
320 CHAN2G(2437), /* Channel 6 */
321 CHAN2G(2442), /* Channel 7 */
322 CHAN2G(2447), /* Channel 8 */
323 CHAN2G(2452), /* Channel 9 */
324 CHAN2G(2457), /* Channel 10 */
325 CHAN2G(2462), /* Channel 11 */
326 CHAN2G(2467), /* Channel 12 */
327 CHAN2G(2472), /* Channel 13 */
328 CHAN2G(2484), /* Channel 14 */
329 };
330
331 static const struct ieee80211_channel hwsim_channels_5ghz[] = {
332 CHAN5G(5180), /* Channel 36 */
333 CHAN5G(5200), /* Channel 40 */
334 CHAN5G(5220), /* Channel 44 */
335 CHAN5G(5240), /* Channel 48 */
336
337 CHAN5G(5260), /* Channel 52 */
338 CHAN5G(5280), /* Channel 56 */
339 CHAN5G(5300), /* Channel 60 */
340 CHAN5G(5320), /* Channel 64 */
341
342 CHAN5G(5500), /* Channel 100 */
343 CHAN5G(5520), /* Channel 104 */
344 CHAN5G(5540), /* Channel 108 */
345 CHAN5G(5560), /* Channel 112 */
346 CHAN5G(5580), /* Channel 116 */
347 CHAN5G(5600), /* Channel 120 */
348 CHAN5G(5620), /* Channel 124 */
349 CHAN5G(5640), /* Channel 128 */
350 CHAN5G(5660), /* Channel 132 */
351 CHAN5G(5680), /* Channel 136 */
352 CHAN5G(5700), /* Channel 140 */
353
354 CHAN5G(5745), /* Channel 149 */
355 CHAN5G(5765), /* Channel 153 */
356 CHAN5G(5785), /* Channel 157 */
357 CHAN5G(5805), /* Channel 161 */
358 CHAN5G(5825), /* Channel 165 */
359 CHAN5G(5845), /* Channel 169 */
360
361 CHAN5G(5855), /* Channel 171 */
362 CHAN5G(5860), /* Channel 172 */
363 CHAN5G(5865), /* Channel 173 */
364 CHAN5G(5870), /* Channel 174 */
365
366 CHAN5G(5875), /* Channel 175 */
367 CHAN5G(5880), /* Channel 176 */
368 CHAN5G(5885), /* Channel 177 */
369 CHAN5G(5890), /* Channel 178 */
370 CHAN5G(5895), /* Channel 179 */
371 CHAN5G(5900), /* Channel 180 */
372 CHAN5G(5905), /* Channel 181 */
373
374 CHAN5G(5910), /* Channel 182 */
375 CHAN5G(5915), /* Channel 183 */
376 CHAN5G(5920), /* Channel 184 */
377 CHAN5G(5925), /* Channel 185 */
378 };
379
380 #define NUM_S1G_CHANS_US 51
381 static struct ieee80211_channel hwsim_channels_s1g[NUM_S1G_CHANS_US];
382
383 static const struct ieee80211_sta_s1g_cap hwsim_s1g_cap = {
384 .s1g = true,
385 .cap = { S1G_CAP0_SGI_1MHZ | S1G_CAP0_SGI_2MHZ,
386 0,
387 0,
388 S1G_CAP3_MAX_MPDU_LEN,
389 0,
390 S1G_CAP5_AMPDU,
391 0,
392 S1G_CAP7_DUP_1MHZ,
393 S1G_CAP8_TWT_RESPOND | S1G_CAP8_TWT_REQUEST,
394 0},
395 .nss_mcs = { 0xfc | 1, /* MCS 7 for 1 SS */
396 /* RX Highest Supported Long GI Data Rate 0:7 */
397 0,
398 /* RX Highest Supported Long GI Data Rate 0:7 */
399 /* TX S1G MCS Map 0:6 */
400 0xfa,
401 /* TX S1G MCS Map :7 */
402 /* TX Highest Supported Long GI Data Rate 0:6 */
403 0x80,
404 /* TX Highest Supported Long GI Data Rate 7:8 */
405 /* Rx Single spatial stream and S1G-MCS Map for 1MHz */
406 /* Tx Single spatial stream and S1G-MCS Map for 1MHz */
407 0 },
408 };
409
410 static void hwsim_init_s1g_channels(struct ieee80211_channel *channels)
411 {
412 int ch, freq;
413
414 for (ch = 0; ch < NUM_S1G_CHANS_US; ch++) {
415 freq = 902000 + (ch + 1) * 500;
416 channels[ch].band = NL80211_BAND_S1GHZ;
417 channels[ch].center_freq = KHZ_TO_MHZ(freq);
418 channels[ch].freq_offset = freq % 1000;
419 channels[ch].hw_value = ch + 1;
420 }
421 }
422
423 static const struct ieee80211_rate hwsim_rates[] = {
424 { .bitrate = 10 },
425 { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
426 { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
427 { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
428 { .bitrate = 60 },
429 { .bitrate = 90 },
430 { .bitrate = 120 },
431 { .bitrate = 180 },
432 { .bitrate = 240 },
433 { .bitrate = 360 },
434 { .bitrate = 480 },
435 { .bitrate = 540 }
436 };
437
438 static const u32 hwsim_ciphers[] = {
439 WLAN_CIPHER_SUITE_WEP40,
440 WLAN_CIPHER_SUITE_WEP104,
441 WLAN_CIPHER_SUITE_TKIP,
442 WLAN_CIPHER_SUITE_CCMP,
443 WLAN_CIPHER_SUITE_CCMP_256,
444 WLAN_CIPHER_SUITE_GCMP,
445 WLAN_CIPHER_SUITE_GCMP_256,
446 WLAN_CIPHER_SUITE_AES_CMAC,
447 WLAN_CIPHER_SUITE_BIP_CMAC_256,
448 WLAN_CIPHER_SUITE_BIP_GMAC_128,
449 WLAN_CIPHER_SUITE_BIP_GMAC_256,
450 };
451
452 #define OUI_QCA 0x001374
453 #define QCA_NL80211_SUBCMD_TEST 1
454 enum qca_nl80211_vendor_subcmds {
455 QCA_WLAN_VENDOR_ATTR_TEST = 8,
456 QCA_WLAN_VENDOR_ATTR_MAX = QCA_WLAN_VENDOR_ATTR_TEST
457 };
458
459 static const struct nla_policy
460 hwsim_vendor_test_policy[QCA_WLAN_VENDOR_ATTR_MAX + 1] = {
461 [QCA_WLAN_VENDOR_ATTR_MAX] = { .type = NLA_U32 },
462 };
463
464 static int mac80211_hwsim_vendor_cmd_test(struct wiphy *wiphy,
465 struct wireless_dev *wdev,
466 const void *data, int data_len)
467 {
468 struct sk_buff *skb;
469 struct nlattr *tb[QCA_WLAN_VENDOR_ATTR_MAX + 1];
470 int err;
471 u32 val;
472
473 err = nla_parse_deprecated(tb, QCA_WLAN_VENDOR_ATTR_MAX, data,
474 data_len, hwsim_vendor_test_policy, NULL);
475 if (err)
476 return err;
477 if (!tb[QCA_WLAN_VENDOR_ATTR_TEST])
478 return -EINVAL;
479 val = nla_get_u32(tb[QCA_WLAN_VENDOR_ATTR_TEST]);
480 wiphy_dbg(wiphy, "%s: test=%u\n", __func__, val);
481
482 /* Send a vendor event as a test. Note that this would not normally be
483 * done within a command handler, but rather, based on some other
484 * trigger. For simplicity, this command is used to trigger the event
485 * here.
486 *
487 * event_idx = 0 (index in mac80211_hwsim_vendor_commands)
488 */
489 skb = cfg80211_vendor_event_alloc(wiphy, wdev, 100, 0, GFP_KERNEL);
490 if (skb) {
491 /* skb_put() or nla_put() will fill up data within
492 * NL80211_ATTR_VENDOR_DATA.
493 */
494
495 /* Add vendor data */
496 nla_put_u32(skb, QCA_WLAN_VENDOR_ATTR_TEST, val + 1);
497
498 /* Send the event - this will call nla_nest_end() */
499 cfg80211_vendor_event(skb, GFP_KERNEL);
500 }
501
502 /* Send a response to the command */
503 skb = cfg80211_vendor_cmd_alloc_reply_skb(wiphy, 10);
504 if (!skb)
505 return -ENOMEM;
506
507 /* skb_put() or nla_put() will fill up data within
508 * NL80211_ATTR_VENDOR_DATA
509 */
510 nla_put_u32(skb, QCA_WLAN_VENDOR_ATTR_TEST, val + 2);
511
512 return cfg80211_vendor_cmd_reply(skb);
513 }
514
515 static struct wiphy_vendor_command mac80211_hwsim_vendor_commands[] = {
516 {
517 .info = { .vendor_id = OUI_QCA,
518 .subcmd = QCA_NL80211_SUBCMD_TEST },
519 .flags = WIPHY_VENDOR_CMD_NEED_NETDEV,
520 .doit = mac80211_hwsim_vendor_cmd_test,
521 .policy = hwsim_vendor_test_policy,
522 .maxattr = QCA_WLAN_VENDOR_ATTR_MAX,
523 }
524 };
525
526 /* Advertise support vendor specific events */
527 static const struct nl80211_vendor_cmd_info mac80211_hwsim_vendor_events[] = {
528 { .vendor_id = OUI_QCA, .subcmd = 1 },
529 };
530
531 static spinlock_t hwsim_radio_lock;
532 static LIST_HEAD(hwsim_radios);
533 static struct rhashtable hwsim_radios_rht;
534 static int hwsim_radio_idx;
535 static int hwsim_radios_generation = 1;
536
537 static struct platform_driver mac80211_hwsim_driver = {
538 .driver = {
539 .name = "mac80211_hwsim",
540 },
541 };
542
543 struct mac80211_hwsim_data {
544 struct list_head list;
545 struct rhash_head rht;
546 struct ieee80211_hw *hw;
547 struct device *dev;
548 struct ieee80211_supported_band bands[NUM_NL80211_BANDS];
549 struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)];
550 struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)];
551 struct ieee80211_channel channels_s1g[ARRAY_SIZE(hwsim_channels_s1g)];
552 struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
553 struct ieee80211_iface_combination if_combination;
554 struct ieee80211_iface_limit if_limits[3];
555 int n_if_limits;
556
557 u32 ciphers[ARRAY_SIZE(hwsim_ciphers)];
558
559 struct mac_address addresses[2];
560 int channels, idx;
561 bool use_chanctx;
562 bool destroy_on_close;
563 u32 portid;
564 char alpha2[2];
565 const struct ieee80211_regdomain *regd;
566
567 struct ieee80211_channel *tmp_chan;
568 struct ieee80211_channel *roc_chan;
569 u32 roc_duration;
570 struct delayed_work roc_start;
571 struct delayed_work roc_done;
572 struct delayed_work hw_scan;
573 struct cfg80211_scan_request *hw_scan_request;
574 struct ieee80211_vif *hw_scan_vif;
575 int scan_chan_idx;
576 u8 scan_addr[ETH_ALEN];
577 struct {
578 struct ieee80211_channel *channel;
579 unsigned long next_start, start, end;
580 } survey_data[ARRAY_SIZE(hwsim_channels_2ghz) +
581 ARRAY_SIZE(hwsim_channels_5ghz)];
582
583 struct ieee80211_channel *channel;
584 u64 beacon_int /* beacon interval in us */;
585 unsigned int rx_filter;
586 bool started, idle, scanning;
587 struct mutex mutex;
588 struct hrtimer beacon_timer;
589 enum ps_mode {
590 PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
591 } ps;
592 bool ps_poll_pending;
593 struct dentry *debugfs;
594
595 uintptr_t pending_cookie;
596 struct sk_buff_head pending; /* packets pending */
597 /*
598 * Only radios in the same group can communicate together (the
599 * channel has to match too). Each bit represents a group. A
600 * radio can be in more than one group.
601 */
602 u64 group;
603
604 /* group shared by radios created in the same netns */
605 int netgroup;
606 /* wmediumd portid responsible for netgroup of this radio */
607 u32 wmediumd;
608
609 /* difference between this hw's clock and the real clock, in usecs */
610 s64 tsf_offset;
611 s64 bcn_delta;
612 /* absolute beacon transmission time. Used to cover up "tx" delay. */
613 u64 abs_bcn_ts;
614
615 /* Stats */
616 u64 tx_pkts;
617 u64 rx_pkts;
618 u64 tx_bytes;
619 u64 rx_bytes;
620 u64 tx_dropped;
621 u64 tx_failed;
622 };
623
624 static const struct rhashtable_params hwsim_rht_params = {
625 .nelem_hint = 2,
626 .automatic_shrinking = true,
627 .key_len = ETH_ALEN,
628 .key_offset = offsetof(struct mac80211_hwsim_data, addresses[1]),
629 .head_offset = offsetof(struct mac80211_hwsim_data, rht),
630 };
631
632 struct hwsim_radiotap_hdr {
633 struct ieee80211_radiotap_header hdr;
634 __le64 rt_tsft;
635 u8 rt_flags;
636 u8 rt_rate;
637 __le16 rt_channel;
638 __le16 rt_chbitmask;
639 } __packed;
640
641 struct hwsim_radiotap_ack_hdr {
642 struct ieee80211_radiotap_header hdr;
643 u8 rt_flags;
644 u8 pad;
645 __le16 rt_channel;
646 __le16 rt_chbitmask;
647 } __packed;
648
649 /* MAC80211_HWSIM netlink family */
650 static struct genl_family hwsim_genl_family;
651
652 enum hwsim_multicast_groups {
653 HWSIM_MCGRP_CONFIG,
654 };
655
656 static const struct genl_multicast_group hwsim_mcgrps[] = {
657 [HWSIM_MCGRP_CONFIG] = { .name = "config", },
658 };
659
660 /* MAC80211_HWSIM netlink policy */
661
662 static const struct nla_policy hwsim_genl_policy[HWSIM_ATTR_MAX + 1] = {
663 [HWSIM_ATTR_ADDR_RECEIVER] = NLA_POLICY_ETH_ADDR_COMPAT,
664 [HWSIM_ATTR_ADDR_TRANSMITTER] = NLA_POLICY_ETH_ADDR_COMPAT,
665 [HWSIM_ATTR_FRAME] = { .type = NLA_BINARY,
666 .len = IEEE80211_MAX_DATA_LEN },
667 [HWSIM_ATTR_FLAGS] = { .type = NLA_U32 },
668 [HWSIM_ATTR_RX_RATE] = { .type = NLA_U32 },
669 [HWSIM_ATTR_SIGNAL] = { .type = NLA_U32 },
670 [HWSIM_ATTR_TX_INFO] = { .type = NLA_BINARY,
671 .len = IEEE80211_TX_MAX_RATES *
672 sizeof(struct hwsim_tx_rate)},
673 [HWSIM_ATTR_COOKIE] = { .type = NLA_U64 },
674 [HWSIM_ATTR_CHANNELS] = { .type = NLA_U32 },
675 [HWSIM_ATTR_RADIO_ID] = { .type = NLA_U32 },
676 [HWSIM_ATTR_REG_HINT_ALPHA2] = { .type = NLA_STRING, .len = 2 },
677 [HWSIM_ATTR_REG_CUSTOM_REG] = { .type = NLA_U32 },
678 [HWSIM_ATTR_REG_STRICT_REG] = { .type = NLA_FLAG },
679 [HWSIM_ATTR_SUPPORT_P2P_DEVICE] = { .type = NLA_FLAG },
680 [HWSIM_ATTR_USE_CHANCTX] = { .type = NLA_FLAG },
681 [HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE] = { .type = NLA_FLAG },
682 [HWSIM_ATTR_RADIO_NAME] = { .type = NLA_STRING },
683 [HWSIM_ATTR_NO_VIF] = { .type = NLA_FLAG },
684 [HWSIM_ATTR_FREQ] = { .type = NLA_U32 },
685 [HWSIM_ATTR_TX_INFO_FLAGS] = { .type = NLA_BINARY },
686 [HWSIM_ATTR_PERM_ADDR] = NLA_POLICY_ETH_ADDR_COMPAT,
687 [HWSIM_ATTR_IFTYPE_SUPPORT] = { .type = NLA_U32 },
688 [HWSIM_ATTR_CIPHER_SUPPORT] = { .type = NLA_BINARY },
689 };
690
691 #if IS_REACHABLE(CONFIG_VIRTIO)
692
693 /* MAC80211_HWSIM virtio queues */
694 static struct virtqueue *hwsim_vqs[HWSIM_NUM_VQS];
695 static bool hwsim_virtio_enabled;
696 static spinlock_t hwsim_virtio_lock;
697
698 static void hwsim_virtio_rx_work(struct work_struct *work);
699 static DECLARE_WORK(hwsim_virtio_rx, hwsim_virtio_rx_work);
700
701 static int hwsim_tx_virtio(struct mac80211_hwsim_data *data,
702 struct sk_buff *skb)
703 {
704 struct scatterlist sg[1];
705 unsigned long flags;
706 int err;
707
708 spin_lock_irqsave(&hwsim_virtio_lock, flags);
709 if (!hwsim_virtio_enabled) {
710 err = -ENODEV;
711 goto out_free;
712 }
713
714 sg_init_one(sg, skb->head, skb_end_offset(skb));
715 err = virtqueue_add_outbuf(hwsim_vqs[HWSIM_VQ_TX], sg, 1, skb,
716 GFP_ATOMIC);
717 if (err)
718 goto out_free;
719 virtqueue_kick(hwsim_vqs[HWSIM_VQ_TX]);
720 spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
721 return 0;
722
723 out_free:
724 spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
725 nlmsg_free(skb);
726 return err;
727 }
728 #else
729 /* cause a linker error if this ends up being needed */
730 extern int hwsim_tx_virtio(struct mac80211_hwsim_data *data,
731 struct sk_buff *skb);
732 #define hwsim_virtio_enabled false
733 #endif
734
735 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
736 struct sk_buff *skb,
737 struct ieee80211_channel *chan);
738
739 /* sysfs attributes */
740 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
741 {
742 struct mac80211_hwsim_data *data = dat;
743 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
744 struct sk_buff *skb;
745 struct ieee80211_pspoll *pspoll;
746
747 if (!vp->assoc)
748 return;
749
750 wiphy_dbg(data->hw->wiphy,
751 "%s: send PS-Poll to %pM for aid %d\n",
752 __func__, vp->bssid, vp->aid);
753
754 skb = dev_alloc_skb(sizeof(*pspoll));
755 if (!skb)
756 return;
757 pspoll = skb_put(skb, sizeof(*pspoll));
758 pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
759 IEEE80211_STYPE_PSPOLL |
760 IEEE80211_FCTL_PM);
761 pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
762 memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
763 memcpy(pspoll->ta, mac, ETH_ALEN);
764
765 rcu_read_lock();
766 mac80211_hwsim_tx_frame(data->hw, skb,
767 rcu_dereference(vif->chanctx_conf)->def.chan);
768 rcu_read_unlock();
769 }
770
771 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
772 struct ieee80211_vif *vif, int ps)
773 {
774 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
775 struct sk_buff *skb;
776 struct ieee80211_hdr *hdr;
777
778 if (!vp->assoc)
779 return;
780
781 wiphy_dbg(data->hw->wiphy,
782 "%s: send data::nullfunc to %pM ps=%d\n",
783 __func__, vp->bssid, ps);
784
785 skb = dev_alloc_skb(sizeof(*hdr));
786 if (!skb)
787 return;
788 hdr = skb_put(skb, sizeof(*hdr) - ETH_ALEN);
789 hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
790 IEEE80211_STYPE_NULLFUNC |
791 IEEE80211_FCTL_TODS |
792 (ps ? IEEE80211_FCTL_PM : 0));
793 hdr->duration_id = cpu_to_le16(0);
794 memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
795 memcpy(hdr->addr2, mac, ETH_ALEN);
796 memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
797
798 rcu_read_lock();
799 mac80211_hwsim_tx_frame(data->hw, skb,
800 rcu_dereference(vif->chanctx_conf)->def.chan);
801 rcu_read_unlock();
802 }
803
804
805 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
806 struct ieee80211_vif *vif)
807 {
808 struct mac80211_hwsim_data *data = dat;
809 hwsim_send_nullfunc(data, mac, vif, 1);
810 }
811
812 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
813 struct ieee80211_vif *vif)
814 {
815 struct mac80211_hwsim_data *data = dat;
816 hwsim_send_nullfunc(data, mac, vif, 0);
817 }
818
819 static int hwsim_fops_ps_read(void *dat, u64 *val)
820 {
821 struct mac80211_hwsim_data *data = dat;
822 *val = data->ps;
823 return 0;
824 }
825
826 static int hwsim_fops_ps_write(void *dat, u64 val)
827 {
828 struct mac80211_hwsim_data *data = dat;
829 enum ps_mode old_ps;
830
831 if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
832 val != PS_MANUAL_POLL)
833 return -EINVAL;
834
835 if (val == PS_MANUAL_POLL) {
836 if (data->ps != PS_ENABLED)
837 return -EINVAL;
838 local_bh_disable();
839 ieee80211_iterate_active_interfaces_atomic(
840 data->hw, IEEE80211_IFACE_ITER_NORMAL,
841 hwsim_send_ps_poll, data);
842 local_bh_enable();
843 return 0;
844 }
845 old_ps = data->ps;
846 data->ps = val;
847
848 local_bh_disable();
849 if (old_ps == PS_DISABLED && val != PS_DISABLED) {
850 ieee80211_iterate_active_interfaces_atomic(
851 data->hw, IEEE80211_IFACE_ITER_NORMAL,
852 hwsim_send_nullfunc_ps, data);
853 } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
854 ieee80211_iterate_active_interfaces_atomic(
855 data->hw, IEEE80211_IFACE_ITER_NORMAL,
856 hwsim_send_nullfunc_no_ps, data);
857 }
858 local_bh_enable();
859
860 return 0;
861 }
862
863 DEFINE_DEBUGFS_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
864 "%llu\n");
865
866 static int hwsim_write_simulate_radar(void *dat, u64 val)
867 {
868 struct mac80211_hwsim_data *data = dat;
869
870 ieee80211_radar_detected(data->hw);
871
872 return 0;
873 }
874
875 DEFINE_DEBUGFS_ATTRIBUTE(hwsim_simulate_radar, NULL,
876 hwsim_write_simulate_radar, "%llu\n");
877
878 static int hwsim_fops_group_read(void *dat, u64 *val)
879 {
880 struct mac80211_hwsim_data *data = dat;
881 *val = data->group;
882 return 0;
883 }
884
885 static int hwsim_fops_group_write(void *dat, u64 val)
886 {
887 struct mac80211_hwsim_data *data = dat;
888 data->group = val;
889 return 0;
890 }
891
892 DEFINE_DEBUGFS_ATTRIBUTE(hwsim_fops_group,
893 hwsim_fops_group_read, hwsim_fops_group_write,
894 "%llx\n");
895
896 static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
897 struct net_device *dev)
898 {
899 /* TODO: allow packet injection */
900 dev_kfree_skb(skb);
901 return NETDEV_TX_OK;
902 }
903
904 static inline u64 mac80211_hwsim_get_tsf_raw(void)
905 {
906 return ktime_to_us(ktime_get_real());
907 }
908
909 static __le64 __mac80211_hwsim_get_tsf(struct mac80211_hwsim_data *data)
910 {
911 u64 now = mac80211_hwsim_get_tsf_raw();
912 return cpu_to_le64(now + data->tsf_offset);
913 }
914
915 static u64 mac80211_hwsim_get_tsf(struct ieee80211_hw *hw,
916 struct ieee80211_vif *vif)
917 {
918 struct mac80211_hwsim_data *data = hw->priv;
919 return le64_to_cpu(__mac80211_hwsim_get_tsf(data));
920 }
921
922 static void mac80211_hwsim_set_tsf(struct ieee80211_hw *hw,
923 struct ieee80211_vif *vif, u64 tsf)
924 {
925 struct mac80211_hwsim_data *data = hw->priv;
926 u64 now = mac80211_hwsim_get_tsf(hw, vif);
927 u32 bcn_int = data->beacon_int;
928 u64 delta = abs(tsf - now);
929
930 /* adjust after beaconing with new timestamp at old TBTT */
931 if (tsf > now) {
932 data->tsf_offset += delta;
933 data->bcn_delta = do_div(delta, bcn_int);
934 } else {
935 data->tsf_offset -= delta;
936 data->bcn_delta = -(s64)do_div(delta, bcn_int);
937 }
938 }
939
940 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
941 struct sk_buff *tx_skb,
942 struct ieee80211_channel *chan)
943 {
944 struct mac80211_hwsim_data *data = hw->priv;
945 struct sk_buff *skb;
946 struct hwsim_radiotap_hdr *hdr;
947 u16 flags, bitrate;
948 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
949 struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
950
951 if (!txrate)
952 bitrate = 0;
953 else
954 bitrate = txrate->bitrate;
955
956 if (!netif_running(hwsim_mon))
957 return;
958
959 skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
960 if (skb == NULL)
961 return;
962
963 hdr = skb_push(skb, sizeof(*hdr));
964 hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
965 hdr->hdr.it_pad = 0;
966 hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
967 hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
968 (1 << IEEE80211_RADIOTAP_RATE) |
969 (1 << IEEE80211_RADIOTAP_TSFT) |
970 (1 << IEEE80211_RADIOTAP_CHANNEL));
971 hdr->rt_tsft = __mac80211_hwsim_get_tsf(data);
972 hdr->rt_flags = 0;
973 hdr->rt_rate = bitrate / 5;
974 hdr->rt_channel = cpu_to_le16(chan->center_freq);
975 flags = IEEE80211_CHAN_2GHZ;
976 if (txrate && txrate->flags & IEEE80211_RATE_ERP_G)
977 flags |= IEEE80211_CHAN_OFDM;
978 else
979 flags |= IEEE80211_CHAN_CCK;
980 hdr->rt_chbitmask = cpu_to_le16(flags);
981
982 skb->dev = hwsim_mon;
983 skb_reset_mac_header(skb);
984 skb->ip_summed = CHECKSUM_UNNECESSARY;
985 skb->pkt_type = PACKET_OTHERHOST;
986 skb->protocol = htons(ETH_P_802_2);
987 memset(skb->cb, 0, sizeof(skb->cb));
988 netif_rx(skb);
989 }
990
991
992 static void mac80211_hwsim_monitor_ack(struct ieee80211_channel *chan,
993 const u8 *addr)
994 {
995 struct sk_buff *skb;
996 struct hwsim_radiotap_ack_hdr *hdr;
997 u16 flags;
998 struct ieee80211_hdr *hdr11;
999
1000 if (!netif_running(hwsim_mon))
1001 return;
1002
1003 skb = dev_alloc_skb(100);
1004 if (skb == NULL)
1005 return;
1006
1007 hdr = skb_put(skb, sizeof(*hdr));
1008 hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
1009 hdr->hdr.it_pad = 0;
1010 hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
1011 hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
1012 (1 << IEEE80211_RADIOTAP_CHANNEL));
1013 hdr->rt_flags = 0;
1014 hdr->pad = 0;
1015 hdr->rt_channel = cpu_to_le16(chan->center_freq);
1016 flags = IEEE80211_CHAN_2GHZ;
1017 hdr->rt_chbitmask = cpu_to_le16(flags);
1018
1019 hdr11 = skb_put(skb, 10);
1020 hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
1021 IEEE80211_STYPE_ACK);
1022 hdr11->duration_id = cpu_to_le16(0);
1023 memcpy(hdr11->addr1, addr, ETH_ALEN);
1024
1025 skb->dev = hwsim_mon;
1026 skb_reset_mac_header(skb);
1027 skb->ip_summed = CHECKSUM_UNNECESSARY;
1028 skb->pkt_type = PACKET_OTHERHOST;
1029 skb->protocol = htons(ETH_P_802_2);
1030 memset(skb->cb, 0, sizeof(skb->cb));
1031 netif_rx(skb);
1032 }
1033
1034 struct mac80211_hwsim_addr_match_data {
1035 u8 addr[ETH_ALEN];
1036 bool ret;
1037 };
1038
1039 static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
1040 struct ieee80211_vif *vif)
1041 {
1042 struct mac80211_hwsim_addr_match_data *md = data;
1043
1044 if (memcmp(mac, md->addr, ETH_ALEN) == 0)
1045 md->ret = true;
1046 }
1047
1048 static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
1049 const u8 *addr)
1050 {
1051 struct mac80211_hwsim_addr_match_data md = {
1052 .ret = false,
1053 };
1054
1055 if (data->scanning && memcmp(addr, data->scan_addr, ETH_ALEN) == 0)
1056 return true;
1057
1058 memcpy(md.addr, addr, ETH_ALEN);
1059
1060 ieee80211_iterate_active_interfaces_atomic(data->hw,
1061 IEEE80211_IFACE_ITER_NORMAL,
1062 mac80211_hwsim_addr_iter,
1063 &md);
1064
1065 return md.ret;
1066 }
1067
1068 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
1069 struct sk_buff *skb)
1070 {
1071 switch (data->ps) {
1072 case PS_DISABLED:
1073 return true;
1074 case PS_ENABLED:
1075 return false;
1076 case PS_AUTO_POLL:
1077 /* TODO: accept (some) Beacons by default and other frames only
1078 * if pending PS-Poll has been sent */
1079 return true;
1080 case PS_MANUAL_POLL:
1081 /* Allow unicast frames to own address if there is a pending
1082 * PS-Poll */
1083 if (data->ps_poll_pending &&
1084 mac80211_hwsim_addr_match(data, skb->data + 4)) {
1085 data->ps_poll_pending = false;
1086 return true;
1087 }
1088 return false;
1089 }
1090
1091 return true;
1092 }
1093
1094 static int hwsim_unicast_netgroup(struct mac80211_hwsim_data *data,
1095 struct sk_buff *skb, int portid)
1096 {
1097 struct net *net;
1098 bool found = false;
1099 int res = -ENOENT;
1100
1101 rcu_read_lock();
1102 for_each_net_rcu(net) {
1103 if (data->netgroup == hwsim_net_get_netgroup(net)) {
1104 res = genlmsg_unicast(net, skb, portid);
1105 found = true;
1106 break;
1107 }
1108 }
1109 rcu_read_unlock();
1110
1111 if (!found)
1112 nlmsg_free(skb);
1113
1114 return res;
1115 }
1116
1117 static void mac80211_hwsim_config_mac_nl(struct ieee80211_hw *hw,
1118 const u8 *addr, bool add)
1119 {
1120 struct mac80211_hwsim_data *data = hw->priv;
1121 u32 _portid = READ_ONCE(data->wmediumd);
1122 struct sk_buff *skb;
1123 void *msg_head;
1124
1125 if (!_portid && !hwsim_virtio_enabled)
1126 return;
1127
1128 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_ATOMIC);
1129 if (!skb)
1130 return;
1131
1132 msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
1133 add ? HWSIM_CMD_ADD_MAC_ADDR :
1134 HWSIM_CMD_DEL_MAC_ADDR);
1135 if (!msg_head) {
1136 pr_debug("mac80211_hwsim: problem with msg_head\n");
1137 goto nla_put_failure;
1138 }
1139
1140 if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
1141 ETH_ALEN, data->addresses[1].addr))
1142 goto nla_put_failure;
1143
1144 if (nla_put(skb, HWSIM_ATTR_ADDR_RECEIVER, ETH_ALEN, addr))
1145 goto nla_put_failure;
1146
1147 genlmsg_end(skb, msg_head);
1148
1149 if (hwsim_virtio_enabled)
1150 hwsim_tx_virtio(data, skb);
1151 else
1152 hwsim_unicast_netgroup(data, skb, _portid);
1153 return;
1154 nla_put_failure:
1155 nlmsg_free(skb);
1156 }
1157
1158 static inline u16 trans_tx_rate_flags_ieee2hwsim(struct ieee80211_tx_rate *rate)
1159 {
1160 u16 result = 0;
1161
1162 if (rate->flags & IEEE80211_TX_RC_USE_RTS_CTS)
1163 result |= MAC80211_HWSIM_TX_RC_USE_RTS_CTS;
1164 if (rate->flags & IEEE80211_TX_RC_USE_CTS_PROTECT)
1165 result |= MAC80211_HWSIM_TX_RC_USE_CTS_PROTECT;
1166 if (rate->flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE)
1167 result |= MAC80211_HWSIM_TX_RC_USE_SHORT_PREAMBLE;
1168 if (rate->flags & IEEE80211_TX_RC_MCS)
1169 result |= MAC80211_HWSIM_TX_RC_MCS;
1170 if (rate->flags & IEEE80211_TX_RC_GREEN_FIELD)
1171 result |= MAC80211_HWSIM_TX_RC_GREEN_FIELD;
1172 if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
1173 result |= MAC80211_HWSIM_TX_RC_40_MHZ_WIDTH;
1174 if (rate->flags & IEEE80211_TX_RC_DUP_DATA)
1175 result |= MAC80211_HWSIM_TX_RC_DUP_DATA;
1176 if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
1177 result |= MAC80211_HWSIM_TX_RC_SHORT_GI;
1178 if (rate->flags & IEEE80211_TX_RC_VHT_MCS)
1179 result |= MAC80211_HWSIM_TX_RC_VHT_MCS;
1180 if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
1181 result |= MAC80211_HWSIM_TX_RC_80_MHZ_WIDTH;
1182 if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
1183 result |= MAC80211_HWSIM_TX_RC_160_MHZ_WIDTH;
1184
1185 return result;
1186 }
1187
1188 static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
1189 struct sk_buff *my_skb,
1190 int dst_portid)
1191 {
1192 struct sk_buff *skb;
1193 struct mac80211_hwsim_data *data = hw->priv;
1194 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) my_skb->data;
1195 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(my_skb);
1196 void *msg_head;
1197 unsigned int hwsim_flags = 0;
1198 int i;
1199 struct hwsim_tx_rate tx_attempts[IEEE80211_TX_MAX_RATES];
1200 struct hwsim_tx_rate_flag tx_attempts_flags[IEEE80211_TX_MAX_RATES];
1201 uintptr_t cookie;
1202
1203 if (data->ps != PS_DISABLED)
1204 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1205 /* If the queue contains MAX_QUEUE skb's drop some */
1206 if (skb_queue_len(&data->pending) >= MAX_QUEUE) {
1207 /* Droping until WARN_QUEUE level */
1208 while (skb_queue_len(&data->pending) >= WARN_QUEUE) {
1209 ieee80211_free_txskb(hw, skb_dequeue(&data->pending));
1210 data->tx_dropped++;
1211 }
1212 }
1213
1214 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_ATOMIC);
1215 if (skb == NULL)
1216 goto nla_put_failure;
1217
1218 msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
1219 HWSIM_CMD_FRAME);
1220 if (msg_head == NULL) {
1221 pr_debug("mac80211_hwsim: problem with msg_head\n");
1222 goto nla_put_failure;
1223 }
1224
1225 if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
1226 ETH_ALEN, data->addresses[1].addr))
1227 goto nla_put_failure;
1228
1229 /* We get the skb->data */
1230 if (nla_put(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data))
1231 goto nla_put_failure;
1232
1233 /* We get the flags for this transmission, and we translate them to
1234 wmediumd flags */
1235
1236 if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
1237 hwsim_flags |= HWSIM_TX_CTL_REQ_TX_STATUS;
1238
1239 if (info->flags & IEEE80211_TX_CTL_NO_ACK)
1240 hwsim_flags |= HWSIM_TX_CTL_NO_ACK;
1241
1242 if (nla_put_u32(skb, HWSIM_ATTR_FLAGS, hwsim_flags))
1243 goto nla_put_failure;
1244
1245 if (nla_put_u32(skb, HWSIM_ATTR_FREQ, data->channel->center_freq))
1246 goto nla_put_failure;
1247
1248 /* We get the tx control (rate and retries) info*/
1249
1250 for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
1251 tx_attempts[i].idx = info->status.rates[i].idx;
1252 tx_attempts_flags[i].idx = info->status.rates[i].idx;
1253 tx_attempts[i].count = info->status.rates[i].count;
1254 tx_attempts_flags[i].flags =
1255 trans_tx_rate_flags_ieee2hwsim(
1256 &info->status.rates[i]);
1257 }
1258
1259 if (nla_put(skb, HWSIM_ATTR_TX_INFO,
1260 sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
1261 tx_attempts))
1262 goto nla_put_failure;
1263
1264 if (nla_put(skb, HWSIM_ATTR_TX_INFO_FLAGS,
1265 sizeof(struct hwsim_tx_rate_flag) * IEEE80211_TX_MAX_RATES,
1266 tx_attempts_flags))
1267 goto nla_put_failure;
1268
1269 /* We create a cookie to identify this skb */
1270 data->pending_cookie++;
1271 cookie = data->pending_cookie;
1272 info->rate_driver_data[0] = (void *)cookie;
1273 if (nla_put_u64_64bit(skb, HWSIM_ATTR_COOKIE, cookie, HWSIM_ATTR_PAD))
1274 goto nla_put_failure;
1275
1276 genlmsg_end(skb, msg_head);
1277
1278 if (hwsim_virtio_enabled) {
1279 if (hwsim_tx_virtio(data, skb))
1280 goto err_free_txskb;
1281 } else {
1282 if (hwsim_unicast_netgroup(data, skb, dst_portid))
1283 goto err_free_txskb;
1284 }
1285
1286 /* Enqueue the packet */
1287 skb_queue_tail(&data->pending, my_skb);
1288 data->tx_pkts++;
1289 data->tx_bytes += my_skb->len;
1290 return;
1291
1292 nla_put_failure:
1293 nlmsg_free(skb);
1294 err_free_txskb:
1295 pr_debug("mac80211_hwsim: error occurred in %s\n", __func__);
1296 ieee80211_free_txskb(hw, my_skb);
1297 data->tx_failed++;
1298 }
1299
1300 static bool hwsim_chans_compat(struct ieee80211_channel *c1,
1301 struct ieee80211_channel *c2)
1302 {
1303 if (!c1 || !c2)
1304 return false;
1305
1306 return c1->center_freq == c2->center_freq;
1307 }
1308
1309 struct tx_iter_data {
1310 struct ieee80211_channel *channel;
1311 bool receive;
1312 };
1313
1314 static void mac80211_hwsim_tx_iter(void *_data, u8 *addr,
1315 struct ieee80211_vif *vif)
1316 {
1317 struct tx_iter_data *data = _data;
1318
1319 if (!vif->chanctx_conf)
1320 return;
1321
1322 if (!hwsim_chans_compat(data->channel,
1323 rcu_dereference(vif->chanctx_conf)->def.chan))
1324 return;
1325
1326 data->receive = true;
1327 }
1328
1329 static void mac80211_hwsim_add_vendor_rtap(struct sk_buff *skb)
1330 {
1331 /*
1332 * To enable this code, #define the HWSIM_RADIOTAP_OUI,
1333 * e.g. like this:
1334 * #define HWSIM_RADIOTAP_OUI "\x02\x00\x00"
1335 * (but you should use a valid OUI, not that)
1336 *
1337 * If anyone wants to 'donate' a radiotap OUI/subns code
1338 * please send a patch removing this #ifdef and changing
1339 * the values accordingly.
1340 */
1341 #ifdef HWSIM_RADIOTAP_OUI
1342 struct ieee80211_vendor_radiotap *rtap;
1343
1344 /*
1345 * Note that this code requires the headroom in the SKB
1346 * that was allocated earlier.
1347 */
1348 rtap = skb_push(skb, sizeof(*rtap) + 8 + 4);
1349 rtap->oui[0] = HWSIM_RADIOTAP_OUI[0];
1350 rtap->oui[1] = HWSIM_RADIOTAP_OUI[1];
1351 rtap->oui[2] = HWSIM_RADIOTAP_OUI[2];
1352 rtap->subns = 127;
1353
1354 /*
1355 * Radiotap vendor namespaces can (and should) also be
1356 * split into fields by using the standard radiotap
1357 * presence bitmap mechanism. Use just BIT(0) here for
1358 * the presence bitmap.
1359 */
1360 rtap->present = BIT(0);
1361 /* We have 8 bytes of (dummy) data */
1362 rtap->len = 8;
1363 /* For testing, also require it to be aligned */
1364 rtap->align = 8;
1365 /* And also test that padding works, 4 bytes */
1366 rtap->pad = 4;
1367 /* push the data */
1368 memcpy(rtap->data, "ABCDEFGH", 8);
1369 /* make sure to clear padding, mac80211 doesn't */
1370 memset(rtap->data + 8, 0, 4);
1371
1372 IEEE80211_SKB_RXCB(skb)->flag |= RX_FLAG_RADIOTAP_VENDOR_DATA;
1373 #endif
1374 }
1375
1376 static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
1377 struct sk_buff *skb,
1378 struct ieee80211_channel *chan)
1379 {
1380 struct mac80211_hwsim_data *data = hw->priv, *data2;
1381 bool ack = false;
1382 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1383 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1384 struct ieee80211_rx_status rx_status;
1385 u64 now;
1386
1387 memset(&rx_status, 0, sizeof(rx_status));
1388 rx_status.flag |= RX_FLAG_MACTIME_START;
1389 rx_status.freq = chan->center_freq;
1390 rx_status.freq_offset = chan->freq_offset ? 1 : 0;
1391 rx_status.band = chan->band;
1392 if (info->control.rates[0].flags & IEEE80211_TX_RC_VHT_MCS) {
1393 rx_status.rate_idx =
1394 ieee80211_rate_get_vht_mcs(&info->control.rates[0]);
1395 rx_status.nss =
1396 ieee80211_rate_get_vht_nss(&info->control.rates[0]);
1397 rx_status.encoding = RX_ENC_VHT;
1398 } else {
1399 rx_status.rate_idx = info->control.rates[0].idx;
1400 if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
1401 rx_status.encoding = RX_ENC_HT;
1402 }
1403 if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
1404 rx_status.bw = RATE_INFO_BW_40;
1405 else if (info->control.rates[0].flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
1406 rx_status.bw = RATE_INFO_BW_80;
1407 else if (info->control.rates[0].flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
1408 rx_status.bw = RATE_INFO_BW_160;
1409 else
1410 rx_status.bw = RATE_INFO_BW_20;
1411 if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
1412 rx_status.enc_flags |= RX_ENC_FLAG_SHORT_GI;
1413 /* TODO: simulate real signal strength (and optional packet loss) */
1414 rx_status.signal = -50;
1415 if (info->control.vif)
1416 rx_status.signal += info->control.vif->bss_conf.txpower;
1417
1418 if (data->ps != PS_DISABLED)
1419 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1420
1421 /* release the skb's source info */
1422 skb_orphan(skb);
1423 skb_dst_drop(skb);
1424 skb->mark = 0;
1425 skb_ext_reset(skb);
1426 nf_reset_ct(skb);
1427
1428 /*
1429 * Get absolute mactime here so all HWs RX at the "same time", and
1430 * absolute TX time for beacon mactime so the timestamp matches.
1431 * Giving beacons a different mactime than non-beacons looks messy, but
1432 * it helps the Toffset be exact and a ~10us mactime discrepancy
1433 * probably doesn't really matter.
1434 */
1435 if (ieee80211_is_beacon(hdr->frame_control) ||
1436 ieee80211_is_probe_resp(hdr->frame_control)) {
1437 rx_status.boottime_ns = ktime_get_boottime_ns();
1438 now = data->abs_bcn_ts;
1439 } else {
1440 now = mac80211_hwsim_get_tsf_raw();
1441 }
1442
1443 /* Copy skb to all enabled radios that are on the current frequency */
1444 spin_lock(&hwsim_radio_lock);
1445 list_for_each_entry(data2, &hwsim_radios, list) {
1446 struct sk_buff *nskb;
1447 struct tx_iter_data tx_iter_data = {
1448 .receive = false,
1449 .channel = chan,
1450 };
1451
1452 if (data == data2)
1453 continue;
1454
1455 if (!data2->started || (data2->idle && !data2->tmp_chan) ||
1456 !hwsim_ps_rx_ok(data2, skb))
1457 continue;
1458
1459 if (!(data->group & data2->group))
1460 continue;
1461
1462 if (data->netgroup != data2->netgroup)
1463 continue;
1464
1465 if (!hwsim_chans_compat(chan, data2->tmp_chan) &&
1466 !hwsim_chans_compat(chan, data2->channel)) {
1467 ieee80211_iterate_active_interfaces_atomic(
1468 data2->hw, IEEE80211_IFACE_ITER_NORMAL,
1469 mac80211_hwsim_tx_iter, &tx_iter_data);
1470 if (!tx_iter_data.receive)
1471 continue;
1472 }
1473
1474 /*
1475 * reserve some space for our vendor and the normal
1476 * radiotap header, since we're copying anyway
1477 */
1478 if (skb->len < PAGE_SIZE && paged_rx) {
1479 struct page *page = alloc_page(GFP_ATOMIC);
1480
1481 if (!page)
1482 continue;
1483
1484 nskb = dev_alloc_skb(128);
1485 if (!nskb) {
1486 __free_page(page);
1487 continue;
1488 }
1489
1490 memcpy(page_address(page), skb->data, skb->len);
1491 skb_add_rx_frag(nskb, 0, page, 0, skb->len, skb->len);
1492 } else {
1493 nskb = skb_copy(skb, GFP_ATOMIC);
1494 if (!nskb)
1495 continue;
1496 }
1497
1498 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
1499 ack = true;
1500
1501 rx_status.mactime = now + data2->tsf_offset;
1502
1503 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
1504
1505 mac80211_hwsim_add_vendor_rtap(nskb);
1506
1507 data2->rx_pkts++;
1508 data2->rx_bytes += nskb->len;
1509 ieee80211_rx_irqsafe(data2->hw, nskb);
1510 }
1511 spin_unlock(&hwsim_radio_lock);
1512
1513 return ack;
1514 }
1515
1516 static void mac80211_hwsim_tx(struct ieee80211_hw *hw,
1517 struct ieee80211_tx_control *control,
1518 struct sk_buff *skb)
1519 {
1520 struct mac80211_hwsim_data *data = hw->priv;
1521 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1522 struct ieee80211_hdr *hdr = (void *)skb->data;
1523 struct ieee80211_chanctx_conf *chanctx_conf;
1524 struct ieee80211_channel *channel;
1525 bool ack;
1526 u32 _portid;
1527
1528 if (WARN_ON(skb->len < 10)) {
1529 /* Should not happen; just a sanity check for addr1 use */
1530 ieee80211_free_txskb(hw, skb);
1531 return;
1532 }
1533
1534 if (!data->use_chanctx) {
1535 channel = data->channel;
1536 } else if (txi->hw_queue == 4) {
1537 channel = data->tmp_chan;
1538 } else {
1539 chanctx_conf = rcu_dereference(txi->control.vif->chanctx_conf);
1540 if (chanctx_conf)
1541 channel = chanctx_conf->def.chan;
1542 else
1543 channel = NULL;
1544 }
1545
1546 if (WARN(!channel, "TX w/o channel - queue = %d\n", txi->hw_queue)) {
1547 ieee80211_free_txskb(hw, skb);
1548 return;
1549 }
1550
1551 if (data->idle && !data->tmp_chan) {
1552 wiphy_dbg(hw->wiphy, "Trying to TX when idle - reject\n");
1553 ieee80211_free_txskb(hw, skb);
1554 return;
1555 }
1556
1557 if (txi->control.vif)
1558 hwsim_check_magic(txi->control.vif);
1559 if (control->sta)
1560 hwsim_check_sta_magic(control->sta);
1561
1562 if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE))
1563 ieee80211_get_tx_rates(txi->control.vif, control->sta, skb,
1564 txi->control.rates,
1565 ARRAY_SIZE(txi->control.rates));
1566
1567 if (skb->len >= 24 + 8 &&
1568 ieee80211_is_probe_resp(hdr->frame_control)) {
1569 /* fake header transmission time */
1570 struct ieee80211_mgmt *mgmt;
1571 struct ieee80211_rate *txrate;
1572 /* TODO: get MCS */
1573 int bitrate = 100;
1574 u64 ts;
1575
1576 mgmt = (struct ieee80211_mgmt *)skb->data;
1577 txrate = ieee80211_get_tx_rate(hw, txi);
1578 if (txrate)
1579 bitrate = txrate->bitrate;
1580 ts = mac80211_hwsim_get_tsf_raw();
1581 mgmt->u.probe_resp.timestamp =
1582 cpu_to_le64(ts + data->tsf_offset +
1583 24 * 8 * 10 / bitrate);
1584 }
1585
1586 mac80211_hwsim_monitor_rx(hw, skb, channel);
1587
1588 /* wmediumd mode check */
1589 _portid = READ_ONCE(data->wmediumd);
1590
1591 if (_portid || hwsim_virtio_enabled)
1592 return mac80211_hwsim_tx_frame_nl(hw, skb, _portid);
1593
1594 /* NO wmediumd detected, perfect medium simulation */
1595 data->tx_pkts++;
1596 data->tx_bytes += skb->len;
1597 ack = mac80211_hwsim_tx_frame_no_nl(hw, skb, channel);
1598
1599 if (ack && skb->len >= 16)
1600 mac80211_hwsim_monitor_ack(channel, hdr->addr2);
1601
1602 ieee80211_tx_info_clear_status(txi);
1603
1604 /* frame was transmitted at most favorable rate at first attempt */
1605 txi->control.rates[0].count = 1;
1606 txi->control.rates[1].idx = -1;
1607
1608 if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
1609 txi->flags |= IEEE80211_TX_STAT_ACK;
1610 ieee80211_tx_status_irqsafe(hw, skb);
1611 }
1612
1613
1614 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
1615 {
1616 struct mac80211_hwsim_data *data = hw->priv;
1617 wiphy_dbg(hw->wiphy, "%s\n", __func__);
1618 data->started = true;
1619 return 0;
1620 }
1621
1622
1623 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
1624 {
1625 struct mac80211_hwsim_data *data = hw->priv;
1626 data->started = false;
1627 hrtimer_cancel(&data->beacon_timer);
1628 wiphy_dbg(hw->wiphy, "%s\n", __func__);
1629 }
1630
1631
1632 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
1633 struct ieee80211_vif *vif)
1634 {
1635 wiphy_dbg(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1636 __func__, ieee80211_vif_type_p2p(vif),
1637 vif->addr);
1638 hwsim_set_magic(vif);
1639
1640 if (vif->type != NL80211_IFTYPE_MONITOR)
1641 mac80211_hwsim_config_mac_nl(hw, vif->addr, true);
1642
1643 vif->cab_queue = 0;
1644 vif->hw_queue[IEEE80211_AC_VO] = 0;
1645 vif->hw_queue[IEEE80211_AC_VI] = 1;
1646 vif->hw_queue[IEEE80211_AC_BE] = 2;
1647 vif->hw_queue[IEEE80211_AC_BK] = 3;
1648
1649 return 0;
1650 }
1651
1652
1653 static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
1654 struct ieee80211_vif *vif,
1655 enum nl80211_iftype newtype,
1656 bool newp2p)
1657 {
1658 newtype = ieee80211_iftype_p2p(newtype, newp2p);
1659 wiphy_dbg(hw->wiphy,
1660 "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
1661 __func__, ieee80211_vif_type_p2p(vif),
1662 newtype, vif->addr);
1663 hwsim_check_magic(vif);
1664
1665 /*
1666 * interface may change from non-AP to AP in
1667 * which case this needs to be set up again
1668 */
1669 vif->cab_queue = 0;
1670
1671 return 0;
1672 }
1673
1674 static void mac80211_hwsim_remove_interface(
1675 struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1676 {
1677 wiphy_dbg(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1678 __func__, ieee80211_vif_type_p2p(vif),
1679 vif->addr);
1680 hwsim_check_magic(vif);
1681 hwsim_clear_magic(vif);
1682 if (vif->type != NL80211_IFTYPE_MONITOR)
1683 mac80211_hwsim_config_mac_nl(hw, vif->addr, false);
1684 }
1685
1686 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
1687 struct sk_buff *skb,
1688 struct ieee80211_channel *chan)
1689 {
1690 struct mac80211_hwsim_data *data = hw->priv;
1691 u32 _pid = READ_ONCE(data->wmediumd);
1692
1693 if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE)) {
1694 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1695 ieee80211_get_tx_rates(txi->control.vif, NULL, skb,
1696 txi->control.rates,
1697 ARRAY_SIZE(txi->control.rates));
1698 }
1699
1700 mac80211_hwsim_monitor_rx(hw, skb, chan);
1701
1702 if (_pid || hwsim_virtio_enabled)
1703 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
1704
1705 mac80211_hwsim_tx_frame_no_nl(hw, skb, chan);
1706 dev_kfree_skb(skb);
1707 }
1708
1709 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
1710 struct ieee80211_vif *vif)
1711 {
1712 struct mac80211_hwsim_data *data = arg;
1713 struct ieee80211_hw *hw = data->hw;
1714 struct ieee80211_tx_info *info;
1715 struct ieee80211_rate *txrate;
1716 struct ieee80211_mgmt *mgmt;
1717 struct sk_buff *skb;
1718 /* TODO: get MCS */
1719 int bitrate = 100;
1720
1721 hwsim_check_magic(vif);
1722
1723 if (vif->type != NL80211_IFTYPE_AP &&
1724 vif->type != NL80211_IFTYPE_MESH_POINT &&
1725 vif->type != NL80211_IFTYPE_ADHOC &&
1726 vif->type != NL80211_IFTYPE_OCB)
1727 return;
1728
1729 skb = ieee80211_beacon_get(hw, vif);
1730 if (skb == NULL)
1731 return;
1732 info = IEEE80211_SKB_CB(skb);
1733 if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE))
1734 ieee80211_get_tx_rates(vif, NULL, skb,
1735 info->control.rates,
1736 ARRAY_SIZE(info->control.rates));
1737
1738 txrate = ieee80211_get_tx_rate(hw, info);
1739 if (txrate)
1740 bitrate = txrate->bitrate;
1741
1742 mgmt = (struct ieee80211_mgmt *) skb->data;
1743 /* fake header transmission time */
1744 data->abs_bcn_ts = mac80211_hwsim_get_tsf_raw();
1745 if (ieee80211_is_s1g_beacon(mgmt->frame_control)) {
1746 struct ieee80211_ext *ext = (void *) mgmt;
1747
1748 ext->u.s1g_beacon.timestamp = cpu_to_le32(data->abs_bcn_ts +
1749 data->tsf_offset +
1750 10 * 8 * 10 /
1751 bitrate);
1752 } else {
1753 mgmt->u.beacon.timestamp = cpu_to_le64(data->abs_bcn_ts +
1754 data->tsf_offset +
1755 24 * 8 * 10 /
1756 bitrate);
1757 }
1758
1759 mac80211_hwsim_tx_frame(hw, skb,
1760 rcu_dereference(vif->chanctx_conf)->def.chan);
1761
1762 while ((skb = ieee80211_get_buffered_bc(hw, vif)) != NULL) {
1763 mac80211_hwsim_tx_frame(hw, skb,
1764 rcu_dereference(vif->chanctx_conf)->def.chan);
1765 }
1766
1767 if (vif->csa_active && ieee80211_beacon_cntdwn_is_complete(vif))
1768 ieee80211_csa_finish(vif);
1769 }
1770
1771 static enum hrtimer_restart
1772 mac80211_hwsim_beacon(struct hrtimer *timer)
1773 {
1774 struct mac80211_hwsim_data *data =
1775 container_of(timer, struct mac80211_hwsim_data, beacon_timer);
1776 struct ieee80211_hw *hw = data->hw;
1777 u64 bcn_int = data->beacon_int;
1778
1779 if (!data->started)
1780 return HRTIMER_NORESTART;
1781
1782 ieee80211_iterate_active_interfaces_atomic(
1783 hw, IEEE80211_IFACE_ITER_NORMAL,
1784 mac80211_hwsim_beacon_tx, data);
1785
1786 /* beacon at new TBTT + beacon interval */
1787 if (data->bcn_delta) {
1788 bcn_int -= data->bcn_delta;
1789 data->bcn_delta = 0;
1790 }
1791 hrtimer_forward(&data->beacon_timer, hrtimer_get_expires(timer),
1792 ns_to_ktime(bcn_int * NSEC_PER_USEC));
1793 return HRTIMER_RESTART;
1794 }
1795
1796 static const char * const hwsim_chanwidths[] = {
1797 [NL80211_CHAN_WIDTH_5] = "ht5",
1798 [NL80211_CHAN_WIDTH_10] = "ht10",
1799 [NL80211_CHAN_WIDTH_20_NOHT] = "noht",
1800 [NL80211_CHAN_WIDTH_20] = "ht20",
1801 [NL80211_CHAN_WIDTH_40] = "ht40",
1802 [NL80211_CHAN_WIDTH_80] = "vht80",
1803 [NL80211_CHAN_WIDTH_80P80] = "vht80p80",
1804 [NL80211_CHAN_WIDTH_160] = "vht160",
1805 [NL80211_CHAN_WIDTH_1] = "1MHz",
1806 [NL80211_CHAN_WIDTH_2] = "2MHz",
1807 [NL80211_CHAN_WIDTH_4] = "4MHz",
1808 [NL80211_CHAN_WIDTH_8] = "8MHz",
1809 [NL80211_CHAN_WIDTH_16] = "16MHz",
1810 };
1811
1812 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
1813 {
1814 struct mac80211_hwsim_data *data = hw->priv;
1815 struct ieee80211_conf *conf = &hw->conf;
1816 static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
1817 [IEEE80211_SMPS_AUTOMATIC] = "auto",
1818 [IEEE80211_SMPS_OFF] = "off",
1819 [IEEE80211_SMPS_STATIC] = "static",
1820 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
1821 };
1822 int idx;
1823
1824 if (conf->chandef.chan)
1825 wiphy_dbg(hw->wiphy,
1826 "%s (freq=%d(%d - %d)/%s idle=%d ps=%d smps=%s)\n",
1827 __func__,
1828 conf->chandef.chan->center_freq,
1829 conf->chandef.center_freq1,
1830 conf->chandef.center_freq2,
1831 hwsim_chanwidths[conf->chandef.width],
1832 !!(conf->flags & IEEE80211_CONF_IDLE),
1833 !!(conf->flags & IEEE80211_CONF_PS),
1834 smps_modes[conf->smps_mode]);
1835 else
1836 wiphy_dbg(hw->wiphy,
1837 "%s (freq=0 idle=%d ps=%d smps=%s)\n",
1838 __func__,
1839 !!(conf->flags & IEEE80211_CONF_IDLE),
1840 !!(conf->flags & IEEE80211_CONF_PS),
1841 smps_modes[conf->smps_mode]);
1842
1843 data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
1844
1845 WARN_ON(conf->chandef.chan && data->use_chanctx);
1846
1847 mutex_lock(&data->mutex);
1848 if (data->scanning && conf->chandef.chan) {
1849 for (idx = 0; idx < ARRAY_SIZE(data->survey_data); idx++) {
1850 if (data->survey_data[idx].channel == data->channel) {
1851 data->survey_data[idx].start =
1852 data->survey_data[idx].next_start;
1853 data->survey_data[idx].end = jiffies;
1854 break;
1855 }
1856 }
1857
1858 data->channel = conf->chandef.chan;
1859
1860 for (idx = 0; idx < ARRAY_SIZE(data->survey_data); idx++) {
1861 if (data->survey_data[idx].channel &&
1862 data->survey_data[idx].channel != data->channel)
1863 continue;
1864 data->survey_data[idx].channel = data->channel;
1865 data->survey_data[idx].next_start = jiffies;
1866 break;
1867 }
1868 } else {
1869 data->channel = conf->chandef.chan;
1870 }
1871 mutex_unlock(&data->mutex);
1872
1873 if (!data->started || !data->beacon_int)
1874 hrtimer_cancel(&data->beacon_timer);
1875 else if (!hrtimer_is_queued(&data->beacon_timer)) {
1876 u64 tsf = mac80211_hwsim_get_tsf(hw, NULL);
1877 u32 bcn_int = data->beacon_int;
1878 u64 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1879
1880 hrtimer_start(&data->beacon_timer,
1881 ns_to_ktime(until_tbtt * NSEC_PER_USEC),
1882 HRTIMER_MODE_REL_SOFT);
1883 }
1884
1885 return 0;
1886 }
1887
1888
1889 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
1890 unsigned int changed_flags,
1891 unsigned int *total_flags,u64 multicast)
1892 {
1893 struct mac80211_hwsim_data *data = hw->priv;
1894
1895 wiphy_dbg(hw->wiphy, "%s\n", __func__);
1896
1897 data->rx_filter = 0;
1898 if (*total_flags & FIF_ALLMULTI)
1899 data->rx_filter |= FIF_ALLMULTI;
1900 if (*total_flags & FIF_MCAST_ACTION)
1901 data->rx_filter |= FIF_MCAST_ACTION;
1902
1903 *total_flags = data->rx_filter;
1904 }
1905
1906 static void mac80211_hwsim_bcn_en_iter(void *data, u8 *mac,
1907 struct ieee80211_vif *vif)
1908 {
1909 unsigned int *count = data;
1910 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1911
1912 if (vp->bcn_en)
1913 (*count)++;
1914 }
1915
1916 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
1917 struct ieee80211_vif *vif,
1918 struct ieee80211_bss_conf *info,
1919 u32 changed)
1920 {
1921 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1922 struct mac80211_hwsim_data *data = hw->priv;
1923
1924 hwsim_check_magic(vif);
1925
1926 wiphy_dbg(hw->wiphy, "%s(changed=0x%x vif->addr=%pM)\n",
1927 __func__, changed, vif->addr);
1928
1929 if (changed & BSS_CHANGED_BSSID) {
1930 wiphy_dbg(hw->wiphy, "%s: BSSID changed: %pM\n",
1931 __func__, info->bssid);
1932 memcpy(vp->bssid, info->bssid, ETH_ALEN);
1933 }
1934
1935 if (changed & BSS_CHANGED_ASSOC) {
1936 wiphy_dbg(hw->wiphy, " ASSOC: assoc=%d aid=%d\n",
1937 info->assoc, info->aid);
1938 vp->assoc = info->assoc;
1939 vp->aid = info->aid;
1940 }
1941
1942 if (changed & BSS_CHANGED_BEACON_ENABLED) {
1943 wiphy_dbg(hw->wiphy, " BCN EN: %d (BI=%u)\n",
1944 info->enable_beacon, info->beacon_int);
1945 vp->bcn_en = info->enable_beacon;
1946 if (data->started &&
1947 !hrtimer_is_queued(&data->beacon_timer) &&
1948 info->enable_beacon) {
1949 u64 tsf, until_tbtt;
1950 u32 bcn_int;
1951 data->beacon_int = info->beacon_int * 1024;
1952 tsf = mac80211_hwsim_get_tsf(hw, vif);
1953 bcn_int = data->beacon_int;
1954 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1955
1956 hrtimer_start(&data->beacon_timer,
1957 ns_to_ktime(until_tbtt * NSEC_PER_USEC),
1958 HRTIMER_MODE_REL_SOFT);
1959 } else if (!info->enable_beacon) {
1960 unsigned int count = 0;
1961 ieee80211_iterate_active_interfaces_atomic(
1962 data->hw, IEEE80211_IFACE_ITER_NORMAL,
1963 mac80211_hwsim_bcn_en_iter, &count);
1964 wiphy_dbg(hw->wiphy, " beaconing vifs remaining: %u",
1965 count);
1966 if (count == 0) {
1967 hrtimer_cancel(&data->beacon_timer);
1968 data->beacon_int = 0;
1969 }
1970 }
1971 }
1972
1973 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1974 wiphy_dbg(hw->wiphy, " ERP_CTS_PROT: %d\n",
1975 info->use_cts_prot);
1976 }
1977
1978 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1979 wiphy_dbg(hw->wiphy, " ERP_PREAMBLE: %d\n",
1980 info->use_short_preamble);
1981 }
1982
1983 if (changed & BSS_CHANGED_ERP_SLOT) {
1984 wiphy_dbg(hw->wiphy, " ERP_SLOT: %d\n", info->use_short_slot);
1985 }
1986
1987 if (changed & BSS_CHANGED_HT) {
1988 wiphy_dbg(hw->wiphy, " HT: op_mode=0x%x\n",
1989 info->ht_operation_mode);
1990 }
1991
1992 if (changed & BSS_CHANGED_BASIC_RATES) {
1993 wiphy_dbg(hw->wiphy, " BASIC_RATES: 0x%llx\n",
1994 (unsigned long long) info->basic_rates);
1995 }
1996
1997 if (changed & BSS_CHANGED_TXPOWER)
1998 wiphy_dbg(hw->wiphy, " TX Power: %d dBm\n", info->txpower);
1999 }
2000
2001 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
2002 struct ieee80211_vif *vif,
2003 struct ieee80211_sta *sta)
2004 {
2005 hwsim_check_magic(vif);
2006 hwsim_set_sta_magic(sta);
2007
2008 return 0;
2009 }
2010
2011 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
2012 struct ieee80211_vif *vif,
2013 struct ieee80211_sta *sta)
2014 {
2015 hwsim_check_magic(vif);
2016 hwsim_clear_sta_magic(sta);
2017
2018 return 0;
2019 }
2020
2021 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
2022 struct ieee80211_vif *vif,
2023 enum sta_notify_cmd cmd,
2024 struct ieee80211_sta *sta)
2025 {
2026 hwsim_check_magic(vif);
2027
2028 switch (cmd) {
2029 case STA_NOTIFY_SLEEP:
2030 case STA_NOTIFY_AWAKE:
2031 /* TODO: make good use of these flags */
2032 break;
2033 default:
2034 WARN(1, "Invalid sta notify: %d\n", cmd);
2035 break;
2036 }
2037 }
2038
2039 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
2040 struct ieee80211_sta *sta,
2041 bool set)
2042 {
2043 hwsim_check_sta_magic(sta);
2044 return 0;
2045 }
2046
2047 static int mac80211_hwsim_conf_tx(
2048 struct ieee80211_hw *hw,
2049 struct ieee80211_vif *vif, u16 queue,
2050 const struct ieee80211_tx_queue_params *params)
2051 {
2052 wiphy_dbg(hw->wiphy,
2053 "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
2054 __func__, queue,
2055 params->txop, params->cw_min,
2056 params->cw_max, params->aifs);
2057 return 0;
2058 }
2059
2060 static int mac80211_hwsim_get_survey(struct ieee80211_hw *hw, int idx,
2061 struct survey_info *survey)
2062 {
2063 struct mac80211_hwsim_data *hwsim = hw->priv;
2064
2065 if (idx < 0 || idx >= ARRAY_SIZE(hwsim->survey_data))
2066 return -ENOENT;
2067
2068 mutex_lock(&hwsim->mutex);
2069 survey->channel = hwsim->survey_data[idx].channel;
2070 if (!survey->channel) {
2071 mutex_unlock(&hwsim->mutex);
2072 return -ENOENT;
2073 }
2074
2075 /*
2076 * Magically conjured dummy values --- this is only ok for simulated hardware.
2077 *
2078 * A real driver which cannot determine real values noise MUST NOT
2079 * report any, especially not a magically conjured ones :-)
2080 */
2081 survey->filled = SURVEY_INFO_NOISE_DBM |
2082 SURVEY_INFO_TIME |
2083 SURVEY_INFO_TIME_BUSY;
2084 survey->noise = -92;
2085 survey->time =
2086 jiffies_to_msecs(hwsim->survey_data[idx].end -
2087 hwsim->survey_data[idx].start);
2088 /* report 12.5% of channel time is used */
2089 survey->time_busy = survey->time/8;
2090 mutex_unlock(&hwsim->mutex);
2091
2092 return 0;
2093 }
2094
2095 #ifdef CONFIG_NL80211_TESTMODE
2096 /*
2097 * This section contains example code for using netlink
2098 * attributes with the testmode command in nl80211.
2099 */
2100
2101 /* These enums need to be kept in sync with userspace */
2102 enum hwsim_testmode_attr {
2103 __HWSIM_TM_ATTR_INVALID = 0,
2104 HWSIM_TM_ATTR_CMD = 1,
2105 HWSIM_TM_ATTR_PS = 2,
2106
2107 /* keep last */
2108 __HWSIM_TM_ATTR_AFTER_LAST,
2109 HWSIM_TM_ATTR_MAX = __HWSIM_TM_ATTR_AFTER_LAST - 1
2110 };
2111
2112 enum hwsim_testmode_cmd {
2113 HWSIM_TM_CMD_SET_PS = 0,
2114 HWSIM_TM_CMD_GET_PS = 1,
2115 HWSIM_TM_CMD_STOP_QUEUES = 2,
2116 HWSIM_TM_CMD_WAKE_QUEUES = 3,
2117 };
2118
2119 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
2120 [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
2121 [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
2122 };
2123
2124 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
2125 struct ieee80211_vif *vif,
2126 void *data, int len)
2127 {
2128 struct mac80211_hwsim_data *hwsim = hw->priv;
2129 struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
2130 struct sk_buff *skb;
2131 int err, ps;
2132
2133 err = nla_parse_deprecated(tb, HWSIM_TM_ATTR_MAX, data, len,
2134 hwsim_testmode_policy, NULL);
2135 if (err)
2136 return err;
2137
2138 if (!tb[HWSIM_TM_ATTR_CMD])
2139 return -EINVAL;
2140
2141 switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
2142 case HWSIM_TM_CMD_SET_PS:
2143 if (!tb[HWSIM_TM_ATTR_PS])
2144 return -EINVAL;
2145 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
2146 return hwsim_fops_ps_write(hwsim, ps);
2147 case HWSIM_TM_CMD_GET_PS:
2148 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
2149 nla_total_size(sizeof(u32)));
2150 if (!skb)
2151 return -ENOMEM;
2152 if (nla_put_u32(skb, HWSIM_TM_ATTR_PS, hwsim->ps))
2153 goto nla_put_failure;
2154 return cfg80211_testmode_reply(skb);
2155 case HWSIM_TM_CMD_STOP_QUEUES:
2156 ieee80211_stop_queues(hw);
2157 return 0;
2158 case HWSIM_TM_CMD_WAKE_QUEUES:
2159 ieee80211_wake_queues(hw);
2160 return 0;
2161 default:
2162 return -EOPNOTSUPP;
2163 }
2164
2165 nla_put_failure:
2166 kfree_skb(skb);
2167 return -ENOBUFS;
2168 }
2169 #endif
2170
2171 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
2172 struct ieee80211_vif *vif,
2173 struct ieee80211_ampdu_params *params)
2174 {
2175 struct ieee80211_sta *sta = params->sta;
2176 enum ieee80211_ampdu_mlme_action action = params->action;
2177 u16 tid = params->tid;
2178
2179 switch (action) {
2180 case IEEE80211_AMPDU_TX_START:
2181 return IEEE80211_AMPDU_TX_START_IMMEDIATE;
2182 case IEEE80211_AMPDU_TX_STOP_CONT:
2183 case IEEE80211_AMPDU_TX_STOP_FLUSH:
2184 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
2185 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
2186 break;
2187 case IEEE80211_AMPDU_TX_OPERATIONAL:
2188 break;
2189 case IEEE80211_AMPDU_RX_START:
2190 case IEEE80211_AMPDU_RX_STOP:
2191 break;
2192 default:
2193 return -EOPNOTSUPP;
2194 }
2195
2196 return 0;
2197 }
2198
2199 static void mac80211_hwsim_flush(struct ieee80211_hw *hw,
2200 struct ieee80211_vif *vif,
2201 u32 queues, bool drop)
2202 {
2203 /* Not implemented, queues only on kernel side */
2204 }
2205
2206 static void hw_scan_work(struct work_struct *work)
2207 {
2208 struct mac80211_hwsim_data *hwsim =
2209 container_of(work, struct mac80211_hwsim_data, hw_scan.work);
2210 struct cfg80211_scan_request *req = hwsim->hw_scan_request;
2211 int dwell, i;
2212
2213 mutex_lock(&hwsim->mutex);
2214 if (hwsim->scan_chan_idx >= req->n_channels) {
2215 struct cfg80211_scan_info info = {
2216 .aborted = false,
2217 };
2218
2219 wiphy_dbg(hwsim->hw->wiphy, "hw scan complete\n");
2220 ieee80211_scan_completed(hwsim->hw, &info);
2221 hwsim->hw_scan_request = NULL;
2222 hwsim->hw_scan_vif = NULL;
2223 hwsim->tmp_chan = NULL;
2224 mutex_unlock(&hwsim->mutex);
2225 mac80211_hwsim_config_mac_nl(hwsim->hw, hwsim->scan_addr,
2226 false);
2227 return;
2228 }
2229
2230 wiphy_dbg(hwsim->hw->wiphy, "hw scan %d MHz\n",
2231 req->channels[hwsim->scan_chan_idx]->center_freq);
2232
2233 hwsim->tmp_chan = req->channels[hwsim->scan_chan_idx];
2234 if (hwsim->tmp_chan->flags & (IEEE80211_CHAN_NO_IR |
2235 IEEE80211_CHAN_RADAR) ||
2236 !req->n_ssids) {
2237 dwell = 120;
2238 } else {
2239 dwell = 30;
2240 /* send probes */
2241 for (i = 0; i < req->n_ssids; i++) {
2242 struct sk_buff *probe;
2243 struct ieee80211_mgmt *mgmt;
2244
2245 probe = ieee80211_probereq_get(hwsim->hw,
2246 hwsim->scan_addr,
2247 req->ssids[i].ssid,
2248 req->ssids[i].ssid_len,
2249 req->ie_len);
2250 if (!probe)
2251 continue;
2252
2253 mgmt = (struct ieee80211_mgmt *) probe->data;
2254 memcpy(mgmt->da, req->bssid, ETH_ALEN);
2255 memcpy(mgmt->bssid, req->bssid, ETH_ALEN);
2256
2257 if (req->ie_len)
2258 skb_put_data(probe, req->ie, req->ie_len);
2259
2260 local_bh_disable();
2261 mac80211_hwsim_tx_frame(hwsim->hw, probe,
2262 hwsim->tmp_chan);
2263 local_bh_enable();
2264 }
2265 }
2266 ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan,
2267 msecs_to_jiffies(dwell));
2268 hwsim->survey_data[hwsim->scan_chan_idx].channel = hwsim->tmp_chan;
2269 hwsim->survey_data[hwsim->scan_chan_idx].start = jiffies;
2270 hwsim->survey_data[hwsim->scan_chan_idx].end =
2271 jiffies + msecs_to_jiffies(dwell);
2272 hwsim->scan_chan_idx++;
2273 mutex_unlock(&hwsim->mutex);
2274 }
2275
2276 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
2277 struct ieee80211_vif *vif,
2278 struct ieee80211_scan_request *hw_req)
2279 {
2280 struct mac80211_hwsim_data *hwsim = hw->priv;
2281 struct cfg80211_scan_request *req = &hw_req->req;
2282
2283 mutex_lock(&hwsim->mutex);
2284 if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
2285 mutex_unlock(&hwsim->mutex);
2286 return -EBUSY;
2287 }
2288 hwsim->hw_scan_request = req;
2289 hwsim->hw_scan_vif = vif;
2290 hwsim->scan_chan_idx = 0;
2291 if (req->flags & NL80211_SCAN_FLAG_RANDOM_ADDR)
2292 get_random_mask_addr(hwsim->scan_addr,
2293 hw_req->req.mac_addr,
2294 hw_req->req.mac_addr_mask);
2295 else
2296 memcpy(hwsim->scan_addr, vif->addr, ETH_ALEN);
2297 memset(hwsim->survey_data, 0, sizeof(hwsim->survey_data));
2298 mutex_unlock(&hwsim->mutex);
2299
2300 mac80211_hwsim_config_mac_nl(hw, hwsim->scan_addr, true);
2301 wiphy_dbg(hw->wiphy, "hwsim hw_scan request\n");
2302
2303 ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan, 0);
2304
2305 return 0;
2306 }
2307
2308 static void mac80211_hwsim_cancel_hw_scan(struct ieee80211_hw *hw,
2309 struct ieee80211_vif *vif)
2310 {
2311 struct mac80211_hwsim_data *hwsim = hw->priv;
2312 struct cfg80211_scan_info info = {
2313 .aborted = true,
2314 };
2315
2316 wiphy_dbg(hw->wiphy, "hwsim cancel_hw_scan\n");
2317
2318 cancel_delayed_work_sync(&hwsim->hw_scan);
2319
2320 mutex_lock(&hwsim->mutex);
2321 ieee80211_scan_completed(hwsim->hw, &info);
2322 hwsim->tmp_chan = NULL;
2323 hwsim->hw_scan_request = NULL;
2324 hwsim->hw_scan_vif = NULL;
2325 mutex_unlock(&hwsim->mutex);
2326 }
2327
2328 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw,
2329 struct ieee80211_vif *vif,
2330 const u8 *mac_addr)
2331 {
2332 struct mac80211_hwsim_data *hwsim = hw->priv;
2333
2334 mutex_lock(&hwsim->mutex);
2335
2336 if (hwsim->scanning) {
2337 pr_debug("two hwsim sw_scans detected!\n");
2338 goto out;
2339 }
2340
2341 pr_debug("hwsim sw_scan request, prepping stuff\n");
2342
2343 memcpy(hwsim->scan_addr, mac_addr, ETH_ALEN);
2344 mac80211_hwsim_config_mac_nl(hw, hwsim->scan_addr, true);
2345 hwsim->scanning = true;
2346 memset(hwsim->survey_data, 0, sizeof(hwsim->survey_data));
2347
2348 out:
2349 mutex_unlock(&hwsim->mutex);
2350 }
2351
2352 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw,
2353 struct ieee80211_vif *vif)
2354 {
2355 struct mac80211_hwsim_data *hwsim = hw->priv;
2356
2357 mutex_lock(&hwsim->mutex);
2358
2359 pr_debug("hwsim sw_scan_complete\n");
2360 hwsim->scanning = false;
2361 mac80211_hwsim_config_mac_nl(hw, hwsim->scan_addr, false);
2362 eth_zero_addr(hwsim->scan_addr);
2363
2364 mutex_unlock(&hwsim->mutex);
2365 }
2366
2367 static void hw_roc_start(struct work_struct *work)
2368 {
2369 struct mac80211_hwsim_data *hwsim =
2370 container_of(work, struct mac80211_hwsim_data, roc_start.work);
2371
2372 mutex_lock(&hwsim->mutex);
2373
2374 wiphy_dbg(hwsim->hw->wiphy, "hwsim ROC begins\n");
2375 hwsim->tmp_chan = hwsim->roc_chan;
2376 ieee80211_ready_on_channel(hwsim->hw);
2377
2378 ieee80211_queue_delayed_work(hwsim->hw, &hwsim->roc_done,
2379 msecs_to_jiffies(hwsim->roc_duration));
2380
2381 mutex_unlock(&hwsim->mutex);
2382 }
2383
2384 static void hw_roc_done(struct work_struct *work)
2385 {
2386 struct mac80211_hwsim_data *hwsim =
2387 container_of(work, struct mac80211_hwsim_data, roc_done.work);
2388
2389 mutex_lock(&hwsim->mutex);
2390 ieee80211_remain_on_channel_expired(hwsim->hw);
2391 hwsim->tmp_chan = NULL;
2392 mutex_unlock(&hwsim->mutex);
2393
2394 wiphy_dbg(hwsim->hw->wiphy, "hwsim ROC expired\n");
2395 }
2396
2397 static int mac80211_hwsim_roc(struct ieee80211_hw *hw,
2398 struct ieee80211_vif *vif,
2399 struct ieee80211_channel *chan,
2400 int duration,
2401 enum ieee80211_roc_type type)
2402 {
2403 struct mac80211_hwsim_data *hwsim = hw->priv;
2404
2405 mutex_lock(&hwsim->mutex);
2406 if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
2407 mutex_unlock(&hwsim->mutex);
2408 return -EBUSY;
2409 }
2410
2411 hwsim->roc_chan = chan;
2412 hwsim->roc_duration = duration;
2413 mutex_unlock(&hwsim->mutex);
2414
2415 wiphy_dbg(hw->wiphy, "hwsim ROC (%d MHz, %d ms)\n",
2416 chan->center_freq, duration);
2417 ieee80211_queue_delayed_work(hw, &hwsim->roc_start, HZ/50);
2418
2419 return 0;
2420 }
2421
2422 static int mac80211_hwsim_croc(struct ieee80211_hw *hw,
2423 struct ieee80211_vif *vif)
2424 {
2425 struct mac80211_hwsim_data *hwsim = hw->priv;
2426
2427 cancel_delayed_work_sync(&hwsim->roc_start);
2428 cancel_delayed_work_sync(&hwsim->roc_done);
2429
2430 mutex_lock(&hwsim->mutex);
2431 hwsim->tmp_chan = NULL;
2432 mutex_unlock(&hwsim->mutex);
2433
2434 wiphy_dbg(hw->wiphy, "hwsim ROC canceled\n");
2435
2436 return 0;
2437 }
2438
2439 static int mac80211_hwsim_add_chanctx(struct ieee80211_hw *hw,
2440 struct ieee80211_chanctx_conf *ctx)
2441 {
2442 hwsim_set_chanctx_magic(ctx);
2443 wiphy_dbg(hw->wiphy,
2444 "add channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2445 ctx->def.chan->center_freq, ctx->def.width,
2446 ctx->def.center_freq1, ctx->def.center_freq2);
2447 return 0;
2448 }
2449
2450 static void mac80211_hwsim_remove_chanctx(struct ieee80211_hw *hw,
2451 struct ieee80211_chanctx_conf *ctx)
2452 {
2453 wiphy_dbg(hw->wiphy,
2454 "remove channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2455 ctx->def.chan->center_freq, ctx->def.width,
2456 ctx->def.center_freq1, ctx->def.center_freq2);
2457 hwsim_check_chanctx_magic(ctx);
2458 hwsim_clear_chanctx_magic(ctx);
2459 }
2460
2461 static void mac80211_hwsim_change_chanctx(struct ieee80211_hw *hw,
2462 struct ieee80211_chanctx_conf *ctx,
2463 u32 changed)
2464 {
2465 hwsim_check_chanctx_magic(ctx);
2466 wiphy_dbg(hw->wiphy,
2467 "change channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2468 ctx->def.chan->center_freq, ctx->def.width,
2469 ctx->def.center_freq1, ctx->def.center_freq2);
2470 }
2471
2472 static int mac80211_hwsim_assign_vif_chanctx(struct ieee80211_hw *hw,
2473 struct ieee80211_vif *vif,
2474 struct ieee80211_chanctx_conf *ctx)
2475 {
2476 hwsim_check_magic(vif);
2477 hwsim_check_chanctx_magic(ctx);
2478
2479 return 0;
2480 }
2481
2482 static void mac80211_hwsim_unassign_vif_chanctx(struct ieee80211_hw *hw,
2483 struct ieee80211_vif *vif,
2484 struct ieee80211_chanctx_conf *ctx)
2485 {
2486 hwsim_check_magic(vif);
2487 hwsim_check_chanctx_magic(ctx);
2488 }
2489
2490 static const char mac80211_hwsim_gstrings_stats[][ETH_GSTRING_LEN] = {
2491 "tx_pkts_nic",
2492 "tx_bytes_nic",
2493 "rx_pkts_nic",
2494 "rx_bytes_nic",
2495 "d_tx_dropped",
2496 "d_tx_failed",
2497 "d_ps_mode",
2498 "d_group",
2499 };
2500
2501 #define MAC80211_HWSIM_SSTATS_LEN ARRAY_SIZE(mac80211_hwsim_gstrings_stats)
2502
2503 static void mac80211_hwsim_get_et_strings(struct ieee80211_hw *hw,
2504 struct ieee80211_vif *vif,
2505 u32 sset, u8 *data)
2506 {
2507 if (sset == ETH_SS_STATS)
2508 memcpy(data, *mac80211_hwsim_gstrings_stats,
2509 sizeof(mac80211_hwsim_gstrings_stats));
2510 }
2511
2512 static int mac80211_hwsim_get_et_sset_count(struct ieee80211_hw *hw,
2513 struct ieee80211_vif *vif, int sset)
2514 {
2515 if (sset == ETH_SS_STATS)
2516 return MAC80211_HWSIM_SSTATS_LEN;
2517 return 0;
2518 }
2519
2520 static void mac80211_hwsim_get_et_stats(struct ieee80211_hw *hw,
2521 struct ieee80211_vif *vif,
2522 struct ethtool_stats *stats, u64 *data)
2523 {
2524 struct mac80211_hwsim_data *ar = hw->priv;
2525 int i = 0;
2526
2527 data[i++] = ar->tx_pkts;
2528 data[i++] = ar->tx_bytes;
2529 data[i++] = ar->rx_pkts;
2530 data[i++] = ar->rx_bytes;
2531 data[i++] = ar->tx_dropped;
2532 data[i++] = ar->tx_failed;
2533 data[i++] = ar->ps;
2534 data[i++] = ar->group;
2535
2536 WARN_ON(i != MAC80211_HWSIM_SSTATS_LEN);
2537 }
2538
2539 static int mac80211_hwsim_tx_last_beacon(struct ieee80211_hw *hw)
2540 {
2541 return 1;
2542 }
2543
2544 #define HWSIM_COMMON_OPS \
2545 .tx = mac80211_hwsim_tx, \
2546 .start = mac80211_hwsim_start, \
2547 .stop = mac80211_hwsim_stop, \
2548 .add_interface = mac80211_hwsim_add_interface, \
2549 .change_interface = mac80211_hwsim_change_interface, \
2550 .remove_interface = mac80211_hwsim_remove_interface, \
2551 .config = mac80211_hwsim_config, \
2552 .configure_filter = mac80211_hwsim_configure_filter, \
2553 .bss_info_changed = mac80211_hwsim_bss_info_changed, \
2554 .tx_last_beacon = mac80211_hwsim_tx_last_beacon, \
2555 .sta_add = mac80211_hwsim_sta_add, \
2556 .sta_remove = mac80211_hwsim_sta_remove, \
2557 .sta_notify = mac80211_hwsim_sta_notify, \
2558 .set_tim = mac80211_hwsim_set_tim, \
2559 .conf_tx = mac80211_hwsim_conf_tx, \
2560 .get_survey = mac80211_hwsim_get_survey, \
2561 CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd) \
2562 .ampdu_action = mac80211_hwsim_ampdu_action, \
2563 .flush = mac80211_hwsim_flush, \
2564 .get_tsf = mac80211_hwsim_get_tsf, \
2565 .set_tsf = mac80211_hwsim_set_tsf, \
2566 .get_et_sset_count = mac80211_hwsim_get_et_sset_count, \
2567 .get_et_stats = mac80211_hwsim_get_et_stats, \
2568 .get_et_strings = mac80211_hwsim_get_et_strings,
2569
2570 static const struct ieee80211_ops mac80211_hwsim_ops = {
2571 HWSIM_COMMON_OPS
2572 .sw_scan_start = mac80211_hwsim_sw_scan,
2573 .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
2574 };
2575
2576 static const struct ieee80211_ops mac80211_hwsim_mchan_ops = {
2577 HWSIM_COMMON_OPS
2578 .hw_scan = mac80211_hwsim_hw_scan,
2579 .cancel_hw_scan = mac80211_hwsim_cancel_hw_scan,
2580 .sw_scan_start = NULL,
2581 .sw_scan_complete = NULL,
2582 .remain_on_channel = mac80211_hwsim_roc,
2583 .cancel_remain_on_channel = mac80211_hwsim_croc,
2584 .add_chanctx = mac80211_hwsim_add_chanctx,
2585 .remove_chanctx = mac80211_hwsim_remove_chanctx,
2586 .change_chanctx = mac80211_hwsim_change_chanctx,
2587 .assign_vif_chanctx = mac80211_hwsim_assign_vif_chanctx,
2588 .unassign_vif_chanctx = mac80211_hwsim_unassign_vif_chanctx,
2589 };
2590
2591 struct hwsim_new_radio_params {
2592 unsigned int channels;
2593 const char *reg_alpha2;
2594 const struct ieee80211_regdomain *regd;
2595 bool reg_strict;
2596 bool p2p_device;
2597 bool use_chanctx;
2598 bool destroy_on_close;
2599 const char *hwname;
2600 bool no_vif;
2601 const u8 *perm_addr;
2602 u32 iftypes;
2603 u32 *ciphers;
2604 u8 n_ciphers;
2605 };
2606
2607 static void hwsim_mcast_config_msg(struct sk_buff *mcast_skb,
2608 struct genl_info *info)
2609 {
2610 if (info)
2611 genl_notify(&hwsim_genl_family, mcast_skb, info,
2612 HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2613 else
2614 genlmsg_multicast(&hwsim_genl_family, mcast_skb, 0,
2615 HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2616 }
2617
2618 static int append_radio_msg(struct sk_buff *skb, int id,
2619 struct hwsim_new_radio_params *param)
2620 {
2621 int ret;
2622
2623 ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
2624 if (ret < 0)
2625 return ret;
2626
2627 if (param->channels) {
2628 ret = nla_put_u32(skb, HWSIM_ATTR_CHANNELS, param->channels);
2629 if (ret < 0)
2630 return ret;
2631 }
2632
2633 if (param->reg_alpha2) {
2634 ret = nla_put(skb, HWSIM_ATTR_REG_HINT_ALPHA2, 2,
2635 param->reg_alpha2);
2636 if (ret < 0)
2637 return ret;
2638 }
2639
2640 if (param->regd) {
2641 int i;
2642
2643 for (i = 0; i < ARRAY_SIZE(hwsim_world_regdom_custom); i++) {
2644 if (hwsim_world_regdom_custom[i] != param->regd)
2645 continue;
2646
2647 ret = nla_put_u32(skb, HWSIM_ATTR_REG_CUSTOM_REG, i);
2648 if (ret < 0)
2649 return ret;
2650 break;
2651 }
2652 }
2653
2654 if (param->reg_strict) {
2655 ret = nla_put_flag(skb, HWSIM_ATTR_REG_STRICT_REG);
2656 if (ret < 0)
2657 return ret;
2658 }
2659
2660 if (param->p2p_device) {
2661 ret = nla_put_flag(skb, HWSIM_ATTR_SUPPORT_P2P_DEVICE);
2662 if (ret < 0)
2663 return ret;
2664 }
2665
2666 if (param->use_chanctx) {
2667 ret = nla_put_flag(skb, HWSIM_ATTR_USE_CHANCTX);
2668 if (ret < 0)
2669 return ret;
2670 }
2671
2672 if (param->hwname) {
2673 ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME,
2674 strlen(param->hwname), param->hwname);
2675 if (ret < 0)
2676 return ret;
2677 }
2678
2679 return 0;
2680 }
2681
2682 static void hwsim_mcast_new_radio(int id, struct genl_info *info,
2683 struct hwsim_new_radio_params *param)
2684 {
2685 struct sk_buff *mcast_skb;
2686 void *data;
2687
2688 mcast_skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2689 if (!mcast_skb)
2690 return;
2691
2692 data = genlmsg_put(mcast_skb, 0, 0, &hwsim_genl_family, 0,
2693 HWSIM_CMD_NEW_RADIO);
2694 if (!data)
2695 goto out_err;
2696
2697 if (append_radio_msg(mcast_skb, id, param) < 0)
2698 goto out_err;
2699
2700 genlmsg_end(mcast_skb, data);
2701
2702 hwsim_mcast_config_msg(mcast_skb, info);
2703 return;
2704
2705 out_err:
2706 nlmsg_free(mcast_skb);
2707 }
2708
2709 static const struct ieee80211_sband_iftype_data he_capa_2ghz[] = {
2710 {
2711 /* TODO: should we support other types, e.g., P2P?*/
2712 .types_mask = BIT(NL80211_IFTYPE_STATION) |
2713 BIT(NL80211_IFTYPE_AP),
2714 .he_cap = {
2715 .has_he = true,
2716 .he_cap_elem = {
2717 .mac_cap_info[0] =
2718 IEEE80211_HE_MAC_CAP0_HTC_HE,
2719 .mac_cap_info[1] =
2720 IEEE80211_HE_MAC_CAP1_TF_MAC_PAD_DUR_16US |
2721 IEEE80211_HE_MAC_CAP1_MULTI_TID_AGG_RX_QOS_8,
2722 .mac_cap_info[2] =
2723 IEEE80211_HE_MAC_CAP2_BSR |
2724 IEEE80211_HE_MAC_CAP2_MU_CASCADING |
2725 IEEE80211_HE_MAC_CAP2_ACK_EN,
2726 .mac_cap_info[3] =
2727 IEEE80211_HE_MAC_CAP3_OMI_CONTROL |
2728 IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_VHT_2,
2729 .mac_cap_info[4] = IEEE80211_HE_MAC_CAP4_AMDSU_IN_AMPDU,
2730 .phy_cap_info[1] =
2731 IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK |
2732 IEEE80211_HE_PHY_CAP1_DEVICE_CLASS_A |
2733 IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD |
2734 IEEE80211_HE_PHY_CAP1_MIDAMBLE_RX_TX_MAX_NSTS,
2735 .phy_cap_info[2] =
2736 IEEE80211_HE_PHY_CAP2_NDP_4x_LTF_AND_3_2US |
2737 IEEE80211_HE_PHY_CAP2_STBC_TX_UNDER_80MHZ |
2738 IEEE80211_HE_PHY_CAP2_STBC_RX_UNDER_80MHZ |
2739 IEEE80211_HE_PHY_CAP2_UL_MU_FULL_MU_MIMO |
2740 IEEE80211_HE_PHY_CAP2_UL_MU_PARTIAL_MU_MIMO,
2741
2742 /* Leave all the other PHY capability bytes
2743 * unset, as DCM, beam forming, RU and PPE
2744 * threshold information are not supported
2745 */
2746 },
2747 .he_mcs_nss_supp = {
2748 .rx_mcs_80 = cpu_to_le16(0xfffa),
2749 .tx_mcs_80 = cpu_to_le16(0xfffa),
2750 .rx_mcs_160 = cpu_to_le16(0xffff),
2751 .tx_mcs_160 = cpu_to_le16(0xffff),
2752 .rx_mcs_80p80 = cpu_to_le16(0xffff),
2753 .tx_mcs_80p80 = cpu_to_le16(0xffff),
2754 },
2755 },
2756 },
2757 #ifdef CONFIG_MAC80211_MESH
2758 {
2759 /* TODO: should we support other types, e.g., IBSS?*/
2760 .types_mask = BIT(NL80211_IFTYPE_MESH_POINT),
2761 .he_cap = {
2762 .has_he = true,
2763 .he_cap_elem = {
2764 .mac_cap_info[0] =
2765 IEEE80211_HE_MAC_CAP0_HTC_HE,
2766 .mac_cap_info[1] =
2767 IEEE80211_HE_MAC_CAP1_MULTI_TID_AGG_RX_QOS_8,
2768 .mac_cap_info[2] =
2769 IEEE80211_HE_MAC_CAP2_ACK_EN,
2770 .mac_cap_info[3] =
2771 IEEE80211_HE_MAC_CAP3_OMI_CONTROL |
2772 IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_VHT_2,
2773 .mac_cap_info[4] = IEEE80211_HE_MAC_CAP4_AMDSU_IN_AMPDU,
2774 .phy_cap_info[1] =
2775 IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK |
2776 IEEE80211_HE_PHY_CAP1_DEVICE_CLASS_A |
2777 IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD |
2778 IEEE80211_HE_PHY_CAP1_MIDAMBLE_RX_TX_MAX_NSTS,
2779 .phy_cap_info[2] = 0,
2780
2781 /* Leave all the other PHY capability bytes
2782 * unset, as DCM, beam forming, RU and PPE
2783 * threshold information are not supported
2784 */
2785 },
2786 .he_mcs_nss_supp = {
2787 .rx_mcs_80 = cpu_to_le16(0xfffa),
2788 .tx_mcs_80 = cpu_to_le16(0xfffa),
2789 .rx_mcs_160 = cpu_to_le16(0xffff),
2790 .tx_mcs_160 = cpu_to_le16(0xffff),
2791 .rx_mcs_80p80 = cpu_to_le16(0xffff),
2792 .tx_mcs_80p80 = cpu_to_le16(0xffff),
2793 },
2794 },
2795 },
2796 #endif
2797 };
2798
2799 static const struct ieee80211_sband_iftype_data he_capa_5ghz[] = {
2800 {
2801 /* TODO: should we support other types, e.g., P2P?*/
2802 .types_mask = BIT(NL80211_IFTYPE_STATION) |
2803 BIT(NL80211_IFTYPE_AP),
2804 .he_cap = {
2805 .has_he = true,
2806 .he_cap_elem = {
2807 .mac_cap_info[0] =
2808 IEEE80211_HE_MAC_CAP0_HTC_HE,
2809 .mac_cap_info[1] =
2810 IEEE80211_HE_MAC_CAP1_TF_MAC_PAD_DUR_16US |
2811 IEEE80211_HE_MAC_CAP1_MULTI_TID_AGG_RX_QOS_8,
2812 .mac_cap_info[2] =
2813 IEEE80211_HE_MAC_CAP2_BSR |
2814 IEEE80211_HE_MAC_CAP2_MU_CASCADING |
2815 IEEE80211_HE_MAC_CAP2_ACK_EN,
2816 .mac_cap_info[3] =
2817 IEEE80211_HE_MAC_CAP3_OMI_CONTROL |
2818 IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_VHT_2,
2819 .mac_cap_info[4] = IEEE80211_HE_MAC_CAP4_AMDSU_IN_AMPDU,
2820 .phy_cap_info[0] =
2821 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G |
2822 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G |
2823 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G,
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(0xfffa),
2845 .tx_mcs_160 = cpu_to_le16(0xfffa),
2846 .rx_mcs_80p80 = cpu_to_le16(0xfffa),
2847 .tx_mcs_80p80 = cpu_to_le16(0xfffa),
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_VHT_2,
2867 .mac_cap_info[4] = IEEE80211_HE_MAC_CAP4_AMDSU_IN_AMPDU,
2868 .phy_cap_info[0] =
2869 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G |
2870 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G |
2871 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G,
2872 .phy_cap_info[1] =
2873 IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK |
2874 IEEE80211_HE_PHY_CAP1_DEVICE_CLASS_A |
2875 IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD |
2876 IEEE80211_HE_PHY_CAP1_MIDAMBLE_RX_TX_MAX_NSTS,
2877 .phy_cap_info[2] = 0,
2878
2879 /* Leave all the other PHY capability bytes
2880 * unset, as DCM, beam forming, RU and PPE
2881 * threshold information are not supported
2882 */
2883 },
2884 .he_mcs_nss_supp = {
2885 .rx_mcs_80 = cpu_to_le16(0xfffa),
2886 .tx_mcs_80 = cpu_to_le16(0xfffa),
2887 .rx_mcs_160 = cpu_to_le16(0xfffa),
2888 .tx_mcs_160 = cpu_to_le16(0xfffa),
2889 .rx_mcs_80p80 = cpu_to_le16(0xfffa),
2890 .tx_mcs_80p80 = cpu_to_le16(0xfffa),
2891 },
2892 },
2893 },
2894 #endif
2895 };
2896
2897 static void mac80211_hwsim_he_capab(struct ieee80211_supported_band *sband)
2898 {
2899 u16 n_iftype_data;
2900
2901 if (sband->band == NL80211_BAND_2GHZ) {
2902 n_iftype_data = ARRAY_SIZE(he_capa_2ghz);
2903 sband->iftype_data =
2904 (struct ieee80211_sband_iftype_data *)he_capa_2ghz;
2905 } else if (sband->band == NL80211_BAND_5GHZ) {
2906 n_iftype_data = ARRAY_SIZE(he_capa_5ghz);
2907 sband->iftype_data =
2908 (struct ieee80211_sband_iftype_data *)he_capa_5ghz;
2909 } else {
2910 return;
2911 }
2912
2913 sband->n_iftype_data = n_iftype_data;
2914 }
2915
2916 #ifdef CONFIG_MAC80211_MESH
2917 #define HWSIM_MESH_BIT BIT(NL80211_IFTYPE_MESH_POINT)
2918 #else
2919 #define HWSIM_MESH_BIT 0
2920 #endif
2921
2922 #define HWSIM_DEFAULT_IF_LIMIT \
2923 (BIT(NL80211_IFTYPE_STATION) | \
2924 BIT(NL80211_IFTYPE_P2P_CLIENT) | \
2925 BIT(NL80211_IFTYPE_AP) | \
2926 BIT(NL80211_IFTYPE_P2P_GO) | \
2927 HWSIM_MESH_BIT)
2928
2929 #define HWSIM_IFTYPE_SUPPORT_MASK \
2930 (BIT(NL80211_IFTYPE_STATION) | \
2931 BIT(NL80211_IFTYPE_AP) | \
2932 BIT(NL80211_IFTYPE_P2P_CLIENT) | \
2933 BIT(NL80211_IFTYPE_P2P_GO) | \
2934 BIT(NL80211_IFTYPE_ADHOC) | \
2935 BIT(NL80211_IFTYPE_MESH_POINT) | \
2936 BIT(NL80211_IFTYPE_OCB))
2937
2938 static int mac80211_hwsim_new_radio(struct genl_info *info,
2939 struct hwsim_new_radio_params *param)
2940 {
2941 int err;
2942 u8 addr[ETH_ALEN];
2943 struct mac80211_hwsim_data *data;
2944 struct ieee80211_hw *hw;
2945 enum nl80211_band band;
2946 const struct ieee80211_ops *ops = &mac80211_hwsim_ops;
2947 struct net *net;
2948 int idx, i;
2949 int n_limits = 0;
2950
2951 if (WARN_ON(param->channels > 1 && !param->use_chanctx))
2952 return -EINVAL;
2953
2954 spin_lock_bh(&hwsim_radio_lock);
2955 idx = hwsim_radio_idx++;
2956 spin_unlock_bh(&hwsim_radio_lock);
2957
2958 if (param->use_chanctx)
2959 ops = &mac80211_hwsim_mchan_ops;
2960 hw = ieee80211_alloc_hw_nm(sizeof(*data), ops, param->hwname);
2961 if (!hw) {
2962 pr_debug("mac80211_hwsim: ieee80211_alloc_hw failed\n");
2963 err = -ENOMEM;
2964 goto failed;
2965 }
2966
2967 /* ieee80211_alloc_hw_nm may have used a default name */
2968 param->hwname = wiphy_name(hw->wiphy);
2969
2970 if (info)
2971 net = genl_info_net(info);
2972 else
2973 net = &init_net;
2974 wiphy_net_set(hw->wiphy, net);
2975
2976 data = hw->priv;
2977 data->hw = hw;
2978
2979 data->dev = device_create(hwsim_class, NULL, 0, hw, "hwsim%d", idx);
2980 if (IS_ERR(data->dev)) {
2981 printk(KERN_DEBUG
2982 "mac80211_hwsim: device_create failed (%ld)\n",
2983 PTR_ERR(data->dev));
2984 err = -ENOMEM;
2985 goto failed_drvdata;
2986 }
2987 data->dev->driver = &mac80211_hwsim_driver.driver;
2988 err = device_bind_driver(data->dev);
2989 if (err != 0) {
2990 pr_debug("mac80211_hwsim: device_bind_driver failed (%d)\n",
2991 err);
2992 goto failed_bind;
2993 }
2994
2995 skb_queue_head_init(&data->pending);
2996
2997 SET_IEEE80211_DEV(hw, data->dev);
2998 if (!param->perm_addr) {
2999 eth_zero_addr(addr);
3000 addr[0] = 0x02;
3001 addr[3] = idx >> 8;
3002 addr[4] = idx;
3003 memcpy(data->addresses[0].addr, addr, ETH_ALEN);
3004 /* Why need here second address ? */
3005 memcpy(data->addresses[1].addr, addr, ETH_ALEN);
3006 data->addresses[1].addr[0] |= 0x40;
3007 hw->wiphy->n_addresses = 2;
3008 hw->wiphy->addresses = data->addresses;
3009 /* possible address clash is checked at hash table insertion */
3010 } else {
3011 memcpy(data->addresses[0].addr, param->perm_addr, ETH_ALEN);
3012 /* compatibility with automatically generated mac addr */
3013 memcpy(data->addresses[1].addr, param->perm_addr, ETH_ALEN);
3014 hw->wiphy->n_addresses = 2;
3015 hw->wiphy->addresses = data->addresses;
3016 }
3017
3018 data->channels = param->channels;
3019 data->use_chanctx = param->use_chanctx;
3020 data->idx = idx;
3021 data->destroy_on_close = param->destroy_on_close;
3022 if (info)
3023 data->portid = info->snd_portid;
3024
3025 /* setup interface limits, only on interface types we support */
3026 if (param->iftypes & BIT(NL80211_IFTYPE_ADHOC)) {
3027 data->if_limits[n_limits].max = 1;
3028 data->if_limits[n_limits].types = BIT(NL80211_IFTYPE_ADHOC);
3029 n_limits++;
3030 }
3031
3032 if (param->iftypes & HWSIM_DEFAULT_IF_LIMIT) {
3033 data->if_limits[n_limits].max = 2048;
3034 /*
3035 * For this case, we may only support a subset of
3036 * HWSIM_DEFAULT_IF_LIMIT, therefore we only want to add the
3037 * bits that both param->iftype & HWSIM_DEFAULT_IF_LIMIT have.
3038 */
3039 data->if_limits[n_limits].types =
3040 HWSIM_DEFAULT_IF_LIMIT & param->iftypes;
3041 n_limits++;
3042 }
3043
3044 if (param->iftypes & BIT(NL80211_IFTYPE_P2P_DEVICE)) {
3045 data->if_limits[n_limits].max = 1;
3046 data->if_limits[n_limits].types =
3047 BIT(NL80211_IFTYPE_P2P_DEVICE);
3048 n_limits++;
3049 }
3050
3051 if (data->use_chanctx) {
3052 hw->wiphy->max_scan_ssids = 255;
3053 hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
3054 hw->wiphy->max_remain_on_channel_duration = 1000;
3055 data->if_combination.radar_detect_widths = 0;
3056 data->if_combination.num_different_channels = data->channels;
3057 } else {
3058 data->if_combination.num_different_channels = 1;
3059 data->if_combination.radar_detect_widths =
3060 BIT(NL80211_CHAN_WIDTH_5) |
3061 BIT(NL80211_CHAN_WIDTH_10) |
3062 BIT(NL80211_CHAN_WIDTH_20_NOHT) |
3063 BIT(NL80211_CHAN_WIDTH_20) |
3064 BIT(NL80211_CHAN_WIDTH_40) |
3065 BIT(NL80211_CHAN_WIDTH_80) |
3066 BIT(NL80211_CHAN_WIDTH_160);
3067 }
3068
3069 if (!n_limits) {
3070 err = -EINVAL;
3071 goto failed_hw;
3072 }
3073
3074 data->if_combination.max_interfaces = 0;
3075 for (i = 0; i < n_limits; i++)
3076 data->if_combination.max_interfaces +=
3077 data->if_limits[i].max;
3078
3079 data->if_combination.n_limits = n_limits;
3080 data->if_combination.limits = data->if_limits;
3081
3082 /*
3083 * If we actually were asked to support combinations,
3084 * advertise them - if there's only a single thing like
3085 * only IBSS then don't advertise it as combinations.
3086 */
3087 if (data->if_combination.max_interfaces > 1) {
3088 hw->wiphy->iface_combinations = &data->if_combination;
3089 hw->wiphy->n_iface_combinations = 1;
3090 }
3091
3092 if (param->ciphers) {
3093 memcpy(data->ciphers, param->ciphers,
3094 param->n_ciphers * sizeof(u32));
3095 hw->wiphy->cipher_suites = data->ciphers;
3096 hw->wiphy->n_cipher_suites = param->n_ciphers;
3097 }
3098
3099 INIT_DELAYED_WORK(&data->roc_start, hw_roc_start);
3100 INIT_DELAYED_WORK(&data->roc_done, hw_roc_done);
3101 INIT_DELAYED_WORK(&data->hw_scan, hw_scan_work);
3102
3103 hw->queues = 5;
3104 hw->offchannel_tx_hw_queue = 4;
3105
3106 ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
3107 ieee80211_hw_set(hw, CHANCTX_STA_CSA);
3108 ieee80211_hw_set(hw, SUPPORTS_HT_CCK_RATES);
3109 ieee80211_hw_set(hw, QUEUE_CONTROL);
3110 ieee80211_hw_set(hw, WANT_MONITOR_VIF);
3111 ieee80211_hw_set(hw, AMPDU_AGGREGATION);
3112 ieee80211_hw_set(hw, MFP_CAPABLE);
3113 ieee80211_hw_set(hw, SIGNAL_DBM);
3114 ieee80211_hw_set(hw, SUPPORTS_PS);
3115 ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS);
3116 ieee80211_hw_set(hw, HOST_BROADCAST_PS_BUFFERING);
3117 ieee80211_hw_set(hw, PS_NULLFUNC_STACK);
3118 ieee80211_hw_set(hw, TDLS_WIDER_BW);
3119 if (rctbl)
3120 ieee80211_hw_set(hw, SUPPORTS_RC_TABLE);
3121 ieee80211_hw_set(hw, SUPPORTS_MULTI_BSSID);
3122
3123 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
3124 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS |
3125 WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL |
3126 WIPHY_FLAG_AP_UAPSD |
3127 WIPHY_FLAG_SUPPORTS_5_10_MHZ |
3128 WIPHY_FLAG_HAS_CHANNEL_SWITCH;
3129 hw->wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR |
3130 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
3131 NL80211_FEATURE_STATIC_SMPS |
3132 NL80211_FEATURE_DYNAMIC_SMPS |
3133 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
3134 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_VHT_IBSS);
3135 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_BEACON_PROTECTION);
3136 wiphy_ext_feature_set(hw->wiphy,
3137 NL80211_EXT_FEATURE_MULTICAST_REGISTRATIONS);
3138 wiphy_ext_feature_set(hw->wiphy,
3139 NL80211_EXT_FEATURE_BEACON_RATE_LEGACY);
3140
3141 hw->wiphy->interface_modes = param->iftypes;
3142
3143 /* ask mac80211 to reserve space for magic */
3144 hw->vif_data_size = sizeof(struct hwsim_vif_priv);
3145 hw->sta_data_size = sizeof(struct hwsim_sta_priv);
3146 hw->chanctx_data_size = sizeof(struct hwsim_chanctx_priv);
3147
3148 memcpy(data->channels_2ghz, hwsim_channels_2ghz,
3149 sizeof(hwsim_channels_2ghz));
3150 memcpy(data->channels_5ghz, hwsim_channels_5ghz,
3151 sizeof(hwsim_channels_5ghz));
3152 memcpy(data->channels_s1g, hwsim_channels_s1g,
3153 sizeof(hwsim_channels_s1g));
3154 memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
3155
3156 for (band = NL80211_BAND_2GHZ; band < NUM_NL80211_BANDS; band++) {
3157 struct ieee80211_supported_band *sband = &data->bands[band];
3158
3159 sband->band = band;
3160
3161 switch (band) {
3162 case NL80211_BAND_2GHZ:
3163 sband->channels = data->channels_2ghz;
3164 sband->n_channels = ARRAY_SIZE(hwsim_channels_2ghz);
3165 sband->bitrates = data->rates;
3166 sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
3167 break;
3168 case NL80211_BAND_5GHZ:
3169 sband->channels = data->channels_5ghz;
3170 sband->n_channels = ARRAY_SIZE(hwsim_channels_5ghz);
3171 sband->bitrates = data->rates + 4;
3172 sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
3173
3174 sband->vht_cap.vht_supported = true;
3175 sband->vht_cap.cap =
3176 IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 |
3177 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ |
3178 IEEE80211_VHT_CAP_RXLDPC |
3179 IEEE80211_VHT_CAP_SHORT_GI_80 |
3180 IEEE80211_VHT_CAP_SHORT_GI_160 |
3181 IEEE80211_VHT_CAP_TXSTBC |
3182 IEEE80211_VHT_CAP_RXSTBC_4 |
3183 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
3184 sband->vht_cap.vht_mcs.rx_mcs_map =
3185 cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_9 << 0 |
3186 IEEE80211_VHT_MCS_SUPPORT_0_9 << 2 |
3187 IEEE80211_VHT_MCS_SUPPORT_0_9 << 4 |
3188 IEEE80211_VHT_MCS_SUPPORT_0_9 << 6 |
3189 IEEE80211_VHT_MCS_SUPPORT_0_9 << 8 |
3190 IEEE80211_VHT_MCS_SUPPORT_0_9 << 10 |
3191 IEEE80211_VHT_MCS_SUPPORT_0_9 << 12 |
3192 IEEE80211_VHT_MCS_SUPPORT_0_9 << 14);
3193 sband->vht_cap.vht_mcs.tx_mcs_map =
3194 sband->vht_cap.vht_mcs.rx_mcs_map;
3195 break;
3196 case NL80211_BAND_S1GHZ:
3197 memcpy(&sband->s1g_cap, &hwsim_s1g_cap,
3198 sizeof(sband->s1g_cap));
3199 sband->channels = data->channels_s1g;
3200 sband->n_channels = ARRAY_SIZE(hwsim_channels_s1g);
3201 break;
3202 default:
3203 continue;
3204 }
3205
3206 sband->ht_cap.ht_supported = true;
3207 sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
3208 IEEE80211_HT_CAP_GRN_FLD |
3209 IEEE80211_HT_CAP_SGI_20 |
3210 IEEE80211_HT_CAP_SGI_40 |
3211 IEEE80211_HT_CAP_DSSSCCK40;
3212 sband->ht_cap.ampdu_factor = 0x3;
3213 sband->ht_cap.ampdu_density = 0x6;
3214 memset(&sband->ht_cap.mcs, 0,
3215 sizeof(sband->ht_cap.mcs));
3216 sband->ht_cap.mcs.rx_mask[0] = 0xff;
3217 sband->ht_cap.mcs.rx_mask[1] = 0xff;
3218 sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
3219
3220 mac80211_hwsim_he_capab(sband);
3221
3222 hw->wiphy->bands[band] = sband;
3223 }
3224
3225 /* By default all radios belong to the first group */
3226 data->group = 1;
3227 mutex_init(&data->mutex);
3228
3229 data->netgroup = hwsim_net_get_netgroup(net);
3230 data->wmediumd = hwsim_net_get_wmediumd(net);
3231
3232 /* Enable frame retransmissions for lossy channels */
3233 hw->max_rates = 4;
3234 hw->max_rate_tries = 11;
3235
3236 hw->wiphy->vendor_commands = mac80211_hwsim_vendor_commands;
3237 hw->wiphy->n_vendor_commands =
3238 ARRAY_SIZE(mac80211_hwsim_vendor_commands);
3239 hw->wiphy->vendor_events = mac80211_hwsim_vendor_events;
3240 hw->wiphy->n_vendor_events = ARRAY_SIZE(mac80211_hwsim_vendor_events);
3241
3242 if (param->reg_strict)
3243 hw->wiphy->regulatory_flags |= REGULATORY_STRICT_REG;
3244 if (param->regd) {
3245 data->regd = param->regd;
3246 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG;
3247 wiphy_apply_custom_regulatory(hw->wiphy, param->regd);
3248 /* give the regulatory workqueue a chance to run */
3249 schedule_timeout_interruptible(1);
3250 }
3251
3252 if (param->no_vif)
3253 ieee80211_hw_set(hw, NO_AUTO_VIF);
3254
3255 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST);
3256
3257 hrtimer_init(&data->beacon_timer, CLOCK_MONOTONIC,
3258 HRTIMER_MODE_ABS_SOFT);
3259 data->beacon_timer.function = mac80211_hwsim_beacon;
3260
3261 err = ieee80211_register_hw(hw);
3262 if (err < 0) {
3263 pr_debug("mac80211_hwsim: ieee80211_register_hw failed (%d)\n",
3264 err);
3265 goto failed_hw;
3266 }
3267
3268 wiphy_dbg(hw->wiphy, "hwaddr %pM registered\n", hw->wiphy->perm_addr);
3269
3270 if (param->reg_alpha2) {
3271 data->alpha2[0] = param->reg_alpha2[0];
3272 data->alpha2[1] = param->reg_alpha2[1];
3273 regulatory_hint(hw->wiphy, param->reg_alpha2);
3274 }
3275
3276 data->debugfs = debugfs_create_dir("hwsim", hw->wiphy->debugfsdir);
3277 debugfs_create_file("ps", 0666, data->debugfs, data, &hwsim_fops_ps);
3278 debugfs_create_file("group", 0666, data->debugfs, data,
3279 &hwsim_fops_group);
3280 if (!data->use_chanctx)
3281 debugfs_create_file("dfs_simulate_radar", 0222,
3282 data->debugfs,
3283 data, &hwsim_simulate_radar);
3284
3285 spin_lock_bh(&hwsim_radio_lock);
3286 err = rhashtable_insert_fast(&hwsim_radios_rht, &data->rht,
3287 hwsim_rht_params);
3288 if (err < 0) {
3289 if (info) {
3290 GENL_SET_ERR_MSG(info, "perm addr already present");
3291 NL_SET_BAD_ATTR(info->extack,
3292 info->attrs[HWSIM_ATTR_PERM_ADDR]);
3293 }
3294 spin_unlock_bh(&hwsim_radio_lock);
3295 goto failed_final_insert;
3296 }
3297
3298 list_add_tail(&data->list, &hwsim_radios);
3299 hwsim_radios_generation++;
3300 spin_unlock_bh(&hwsim_radio_lock);
3301
3302 hwsim_mcast_new_radio(idx, info, param);
3303
3304 return idx;
3305
3306 failed_final_insert:
3307 debugfs_remove_recursive(data->debugfs);
3308 ieee80211_unregister_hw(data->hw);
3309 failed_hw:
3310 device_release_driver(data->dev);
3311 failed_bind:
3312 device_unregister(data->dev);
3313 failed_drvdata:
3314 ieee80211_free_hw(hw);
3315 failed:
3316 return err;
3317 }
3318
3319 static void hwsim_mcast_del_radio(int id, const char *hwname,
3320 struct genl_info *info)
3321 {
3322 struct sk_buff *skb;
3323 void *data;
3324 int ret;
3325
3326 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
3327 if (!skb)
3328 return;
3329
3330 data = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
3331 HWSIM_CMD_DEL_RADIO);
3332 if (!data)
3333 goto error;
3334
3335 ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
3336 if (ret < 0)
3337 goto error;
3338
3339 ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME, strlen(hwname),
3340 hwname);
3341 if (ret < 0)
3342 goto error;
3343
3344 genlmsg_end(skb, data);
3345
3346 hwsim_mcast_config_msg(skb, info);
3347
3348 return;
3349
3350 error:
3351 nlmsg_free(skb);
3352 }
3353
3354 static void mac80211_hwsim_del_radio(struct mac80211_hwsim_data *data,
3355 const char *hwname,
3356 struct genl_info *info)
3357 {
3358 hwsim_mcast_del_radio(data->idx, hwname, info);
3359 debugfs_remove_recursive(data->debugfs);
3360 ieee80211_unregister_hw(data->hw);
3361 device_release_driver(data->dev);
3362 device_unregister(data->dev);
3363 ieee80211_free_hw(data->hw);
3364 }
3365
3366 static int mac80211_hwsim_get_radio(struct sk_buff *skb,
3367 struct mac80211_hwsim_data *data,
3368 u32 portid, u32 seq,
3369 struct netlink_callback *cb, int flags)
3370 {
3371 void *hdr;
3372 struct hwsim_new_radio_params param = { };
3373 int res = -EMSGSIZE;
3374
3375 hdr = genlmsg_put(skb, portid, seq, &hwsim_genl_family, flags,
3376 HWSIM_CMD_GET_RADIO);
3377 if (!hdr)
3378 return -EMSGSIZE;
3379
3380 if (cb)
3381 genl_dump_check_consistent(cb, hdr);
3382
3383 if (data->alpha2[0] && data->alpha2[1])
3384 param.reg_alpha2 = data->alpha2;
3385
3386 param.reg_strict = !!(data->hw->wiphy->regulatory_flags &
3387 REGULATORY_STRICT_REG);
3388 param.p2p_device = !!(data->hw->wiphy->interface_modes &
3389 BIT(NL80211_IFTYPE_P2P_DEVICE));
3390 param.use_chanctx = data->use_chanctx;
3391 param.regd = data->regd;
3392 param.channels = data->channels;
3393 param.hwname = wiphy_name(data->hw->wiphy);
3394
3395 res = append_radio_msg(skb, data->idx, &param);
3396 if (res < 0)
3397 goto out_err;
3398
3399 genlmsg_end(skb, hdr);
3400 return 0;
3401
3402 out_err:
3403 genlmsg_cancel(skb, hdr);
3404 return res;
3405 }
3406
3407 static void mac80211_hwsim_free(void)
3408 {
3409 struct mac80211_hwsim_data *data;
3410
3411 spin_lock_bh(&hwsim_radio_lock);
3412 while ((data = list_first_entry_or_null(&hwsim_radios,
3413 struct mac80211_hwsim_data,
3414 list))) {
3415 list_del(&data->list);
3416 spin_unlock_bh(&hwsim_radio_lock);
3417 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
3418 NULL);
3419 spin_lock_bh(&hwsim_radio_lock);
3420 }
3421 spin_unlock_bh(&hwsim_radio_lock);
3422 class_destroy(hwsim_class);
3423 }
3424
3425 static const struct net_device_ops hwsim_netdev_ops = {
3426 .ndo_start_xmit = hwsim_mon_xmit,
3427 .ndo_set_mac_address = eth_mac_addr,
3428 .ndo_validate_addr = eth_validate_addr,
3429 };
3430
3431 static void hwsim_mon_setup(struct net_device *dev)
3432 {
3433 dev->netdev_ops = &hwsim_netdev_ops;
3434 dev->needs_free_netdev = true;
3435 ether_setup(dev);
3436 dev->priv_flags |= IFF_NO_QUEUE;
3437 dev->type = ARPHRD_IEEE80211_RADIOTAP;
3438 eth_zero_addr(dev->dev_addr);
3439 dev->dev_addr[0] = 0x12;
3440 }
3441
3442 static struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(const u8 *addr)
3443 {
3444 return rhashtable_lookup_fast(&hwsim_radios_rht,
3445 addr,
3446 hwsim_rht_params);
3447 }
3448
3449 static void hwsim_register_wmediumd(struct net *net, u32 portid)
3450 {
3451 struct mac80211_hwsim_data *data;
3452
3453 hwsim_net_set_wmediumd(net, portid);
3454
3455 spin_lock_bh(&hwsim_radio_lock);
3456 list_for_each_entry(data, &hwsim_radios, list) {
3457 if (data->netgroup == hwsim_net_get_netgroup(net))
3458 data->wmediumd = portid;
3459 }
3460 spin_unlock_bh(&hwsim_radio_lock);
3461 }
3462
3463 static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
3464 struct genl_info *info)
3465 {
3466
3467 struct ieee80211_hdr *hdr;
3468 struct mac80211_hwsim_data *data2;
3469 struct ieee80211_tx_info *txi;
3470 struct hwsim_tx_rate *tx_attempts;
3471 u64 ret_skb_cookie;
3472 struct sk_buff *skb, *tmp;
3473 const u8 *src;
3474 unsigned int hwsim_flags;
3475 int i;
3476 bool found = false;
3477
3478 if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
3479 !info->attrs[HWSIM_ATTR_FLAGS] ||
3480 !info->attrs[HWSIM_ATTR_COOKIE] ||
3481 !info->attrs[HWSIM_ATTR_SIGNAL] ||
3482 !info->attrs[HWSIM_ATTR_TX_INFO])
3483 goto out;
3484
3485 src = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
3486 hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
3487 ret_skb_cookie = nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
3488
3489 data2 = get_hwsim_data_ref_from_addr(src);
3490 if (!data2)
3491 goto out;
3492
3493 if (!hwsim_virtio_enabled) {
3494 if (hwsim_net_get_netgroup(genl_info_net(info)) !=
3495 data2->netgroup)
3496 goto out;
3497
3498 if (info->snd_portid != data2->wmediumd)
3499 goto out;
3500 }
3501
3502 /* look for the skb matching the cookie passed back from user */
3503 skb_queue_walk_safe(&data2->pending, skb, tmp) {
3504 u64 skb_cookie;
3505
3506 txi = IEEE80211_SKB_CB(skb);
3507 skb_cookie = (u64)(uintptr_t)txi->rate_driver_data[0];
3508
3509 if (skb_cookie == ret_skb_cookie) {
3510 skb_unlink(skb, &data2->pending);
3511 found = true;
3512 break;
3513 }
3514 }
3515
3516 /* not found */
3517 if (!found)
3518 goto out;
3519
3520 /* Tx info received because the frame was broadcasted on user space,
3521 so we get all the necessary info: tx attempts and skb control buff */
3522
3523 tx_attempts = (struct hwsim_tx_rate *)nla_data(
3524 info->attrs[HWSIM_ATTR_TX_INFO]);
3525
3526 /* now send back TX status */
3527 txi = IEEE80211_SKB_CB(skb);
3528
3529 ieee80211_tx_info_clear_status(txi);
3530
3531 for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
3532 txi->status.rates[i].idx = tx_attempts[i].idx;
3533 txi->status.rates[i].count = tx_attempts[i].count;
3534 }
3535
3536 txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
3537
3538 if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
3539 (hwsim_flags & HWSIM_TX_STAT_ACK)) {
3540 if (skb->len >= 16) {
3541 hdr = (struct ieee80211_hdr *) skb->data;
3542 mac80211_hwsim_monitor_ack(data2->channel,
3543 hdr->addr2);
3544 }
3545 txi->flags |= IEEE80211_TX_STAT_ACK;
3546 }
3547 ieee80211_tx_status_irqsafe(data2->hw, skb);
3548 return 0;
3549 out:
3550 return -EINVAL;
3551
3552 }
3553
3554 static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
3555 struct genl_info *info)
3556 {
3557 struct mac80211_hwsim_data *data2;
3558 struct ieee80211_rx_status rx_status;
3559 struct ieee80211_hdr *hdr;
3560 const u8 *dst;
3561 int frame_data_len;
3562 void *frame_data;
3563 struct sk_buff *skb = NULL;
3564
3565 if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
3566 !info->attrs[HWSIM_ATTR_FRAME] ||
3567 !info->attrs[HWSIM_ATTR_RX_RATE] ||
3568 !info->attrs[HWSIM_ATTR_SIGNAL])
3569 goto out;
3570
3571 dst = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
3572 frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
3573 frame_data = (void *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
3574
3575 /* Allocate new skb here */
3576 skb = alloc_skb(frame_data_len, GFP_KERNEL);
3577 if (skb == NULL)
3578 goto err;
3579
3580 if (frame_data_len > IEEE80211_MAX_DATA_LEN)
3581 goto err;
3582
3583 /* Copy the data */
3584 skb_put_data(skb, frame_data, frame_data_len);
3585
3586 data2 = get_hwsim_data_ref_from_addr(dst);
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 /* check if radio is configured properly */
3600
3601 if (data2->idle || !data2->started)
3602 goto out;
3603
3604 /* A frame is received from user space */
3605 memset(&rx_status, 0, sizeof(rx_status));
3606 if (info->attrs[HWSIM_ATTR_FREQ]) {
3607 /* throw away off-channel packets, but allow both the temporary
3608 * ("hw" scan/remain-on-channel) and regular channel, since the
3609 * internal datapath also allows this
3610 */
3611 mutex_lock(&data2->mutex);
3612 rx_status.freq = nla_get_u32(info->attrs[HWSIM_ATTR_FREQ]);
3613
3614 if (rx_status.freq != data2->channel->center_freq &&
3615 (!data2->tmp_chan ||
3616 rx_status.freq != data2->tmp_chan->center_freq)) {
3617 mutex_unlock(&data2->mutex);
3618 goto out;
3619 }
3620 mutex_unlock(&data2->mutex);
3621 } else {
3622 rx_status.freq = data2->channel->center_freq;
3623 }
3624
3625 rx_status.band = data2->channel->band;
3626 rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
3627 rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
3628
3629 hdr = (void *)skb->data;
3630
3631 if (ieee80211_is_beacon(hdr->frame_control) ||
3632 ieee80211_is_probe_resp(hdr->frame_control))
3633 rx_status.boottime_ns = ktime_get_boottime_ns();
3634
3635 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
3636 data2->rx_pkts++;
3637 data2->rx_bytes += skb->len;
3638 ieee80211_rx_irqsafe(data2->hw, skb);
3639
3640 return 0;
3641 err:
3642 pr_debug("mac80211_hwsim: error occurred in %s\n", __func__);
3643 out:
3644 dev_kfree_skb(skb);
3645 return -EINVAL;
3646 }
3647
3648 static int hwsim_register_received_nl(struct sk_buff *skb_2,
3649 struct genl_info *info)
3650 {
3651 struct net *net = genl_info_net(info);
3652 struct mac80211_hwsim_data *data;
3653 int chans = 1;
3654
3655 spin_lock_bh(&hwsim_radio_lock);
3656 list_for_each_entry(data, &hwsim_radios, list)
3657 chans = max(chans, data->channels);
3658 spin_unlock_bh(&hwsim_radio_lock);
3659
3660 /* In the future we should revise the userspace API and allow it
3661 * to set a flag that it does support multi-channel, then we can
3662 * let this pass conditionally on the flag.
3663 * For current userspace, prohibit it since it won't work right.
3664 */
3665 if (chans > 1)
3666 return -EOPNOTSUPP;
3667
3668 if (hwsim_net_get_wmediumd(net))
3669 return -EBUSY;
3670
3671 hwsim_register_wmediumd(net, info->snd_portid);
3672
3673 pr_debug("mac80211_hwsim: received a REGISTER, "
3674 "switching to wmediumd mode with pid %d\n", info->snd_portid);
3675
3676 return 0;
3677 }
3678
3679 /* ensures ciphers only include ciphers listed in 'hwsim_ciphers' array */
3680 static bool hwsim_known_ciphers(const u32 *ciphers, int n_ciphers)
3681 {
3682 int i;
3683
3684 for (i = 0; i < n_ciphers; i++) {
3685 int j;
3686 int found = 0;
3687
3688 for (j = 0; j < ARRAY_SIZE(hwsim_ciphers); j++) {
3689 if (ciphers[i] == hwsim_ciphers[j]) {
3690 found = 1;
3691 break;
3692 }
3693 }
3694
3695 if (!found)
3696 return false;
3697 }
3698
3699 return true;
3700 }
3701
3702 static int hwsim_new_radio_nl(struct sk_buff *msg, struct genl_info *info)
3703 {
3704 struct hwsim_new_radio_params param = { 0 };
3705 const char *hwname = NULL;
3706 int ret;
3707
3708 param.reg_strict = info->attrs[HWSIM_ATTR_REG_STRICT_REG];
3709 param.p2p_device = info->attrs[HWSIM_ATTR_SUPPORT_P2P_DEVICE];
3710 param.channels = channels;
3711 param.destroy_on_close =
3712 info->attrs[HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE];
3713
3714 if (info->attrs[HWSIM_ATTR_CHANNELS])
3715 param.channels = nla_get_u32(info->attrs[HWSIM_ATTR_CHANNELS]);
3716
3717 if (param.channels < 1) {
3718 GENL_SET_ERR_MSG(info, "must have at least one channel");
3719 return -EINVAL;
3720 }
3721
3722 if (param.channels > CFG80211_MAX_NUM_DIFFERENT_CHANNELS) {
3723 GENL_SET_ERR_MSG(info, "too many channels specified");
3724 return -EINVAL;
3725 }
3726
3727 if (info->attrs[HWSIM_ATTR_NO_VIF])
3728 param.no_vif = true;
3729
3730 if (info->attrs[HWSIM_ATTR_USE_CHANCTX])
3731 param.use_chanctx = true;
3732 else
3733 param.use_chanctx = (param.channels > 1);
3734
3735 if (info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2])
3736 param.reg_alpha2 =
3737 nla_data(info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2]);
3738
3739 if (info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]) {
3740 u32 idx = nla_get_u32(info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]);
3741
3742 if (idx >= ARRAY_SIZE(hwsim_world_regdom_custom))
3743 return -EINVAL;
3744
3745 idx = array_index_nospec(idx,
3746 ARRAY_SIZE(hwsim_world_regdom_custom));
3747 param.regd = hwsim_world_regdom_custom[idx];
3748 }
3749
3750 if (info->attrs[HWSIM_ATTR_PERM_ADDR]) {
3751 if (!is_valid_ether_addr(
3752 nla_data(info->attrs[HWSIM_ATTR_PERM_ADDR]))) {
3753 GENL_SET_ERR_MSG(info,"MAC is no valid source addr");
3754 NL_SET_BAD_ATTR(info->extack,
3755 info->attrs[HWSIM_ATTR_PERM_ADDR]);
3756 return -EINVAL;
3757 }
3758
3759 param.perm_addr = nla_data(info->attrs[HWSIM_ATTR_PERM_ADDR]);
3760 }
3761
3762 if (info->attrs[HWSIM_ATTR_IFTYPE_SUPPORT]) {
3763 param.iftypes =
3764 nla_get_u32(info->attrs[HWSIM_ATTR_IFTYPE_SUPPORT]);
3765
3766 if (param.iftypes & ~HWSIM_IFTYPE_SUPPORT_MASK) {
3767 NL_SET_ERR_MSG_ATTR(info->extack,
3768 info->attrs[HWSIM_ATTR_IFTYPE_SUPPORT],
3769 "cannot support more iftypes than kernel");
3770 return -EINVAL;
3771 }
3772 } else {
3773 param.iftypes = HWSIM_IFTYPE_SUPPORT_MASK;
3774 }
3775
3776 /* ensure both flag and iftype support is honored */
3777 if (param.p2p_device ||
3778 param.iftypes & BIT(NL80211_IFTYPE_P2P_DEVICE)) {
3779 param.iftypes |= BIT(NL80211_IFTYPE_P2P_DEVICE);
3780 param.p2p_device = true;
3781 }
3782
3783 if (info->attrs[HWSIM_ATTR_CIPHER_SUPPORT]) {
3784 u32 len = nla_len(info->attrs[HWSIM_ATTR_CIPHER_SUPPORT]);
3785
3786 param.ciphers =
3787 nla_data(info->attrs[HWSIM_ATTR_CIPHER_SUPPORT]);
3788
3789 if (len % sizeof(u32)) {
3790 NL_SET_ERR_MSG_ATTR(info->extack,
3791 info->attrs[HWSIM_ATTR_CIPHER_SUPPORT],
3792 "bad cipher list length");
3793 return -EINVAL;
3794 }
3795
3796 param.n_ciphers = len / sizeof(u32);
3797
3798 if (param.n_ciphers > ARRAY_SIZE(hwsim_ciphers)) {
3799 NL_SET_ERR_MSG_ATTR(info->extack,
3800 info->attrs[HWSIM_ATTR_CIPHER_SUPPORT],
3801 "too many ciphers specified");
3802 return -EINVAL;
3803 }
3804
3805 if (!hwsim_known_ciphers(param.ciphers, param.n_ciphers)) {
3806 NL_SET_ERR_MSG_ATTR(info->extack,
3807 info->attrs[HWSIM_ATTR_CIPHER_SUPPORT],
3808 "unsupported ciphers specified");
3809 return -EINVAL;
3810 }
3811 }
3812
3813 if (info->attrs[HWSIM_ATTR_RADIO_NAME]) {
3814 hwname = kstrndup((char *)nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]),
3815 nla_len(info->attrs[HWSIM_ATTR_RADIO_NAME]),
3816 GFP_KERNEL);
3817 if (!hwname)
3818 return -ENOMEM;
3819 param.hwname = hwname;
3820 }
3821
3822 ret = mac80211_hwsim_new_radio(info, &param);
3823 kfree(hwname);
3824 return ret;
3825 }
3826
3827 static int hwsim_del_radio_nl(struct sk_buff *msg, struct genl_info *info)
3828 {
3829 struct mac80211_hwsim_data *data;
3830 s64 idx = -1;
3831 const char *hwname = NULL;
3832
3833 if (info->attrs[HWSIM_ATTR_RADIO_ID]) {
3834 idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
3835 } else if (info->attrs[HWSIM_ATTR_RADIO_NAME]) {
3836 hwname = kstrndup((char *)nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]),
3837 nla_len(info->attrs[HWSIM_ATTR_RADIO_NAME]),
3838 GFP_KERNEL);
3839 if (!hwname)
3840 return -ENOMEM;
3841 } else
3842 return -EINVAL;
3843
3844 spin_lock_bh(&hwsim_radio_lock);
3845 list_for_each_entry(data, &hwsim_radios, list) {
3846 if (idx >= 0) {
3847 if (data->idx != idx)
3848 continue;
3849 } else {
3850 if (!hwname ||
3851 strcmp(hwname, wiphy_name(data->hw->wiphy)))
3852 continue;
3853 }
3854
3855 if (!net_eq(wiphy_net(data->hw->wiphy), genl_info_net(info)))
3856 continue;
3857
3858 list_del(&data->list);
3859 rhashtable_remove_fast(&hwsim_radios_rht, &data->rht,
3860 hwsim_rht_params);
3861 hwsim_radios_generation++;
3862 spin_unlock_bh(&hwsim_radio_lock);
3863 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
3864 info);
3865 kfree(hwname);
3866 return 0;
3867 }
3868 spin_unlock_bh(&hwsim_radio_lock);
3869
3870 kfree(hwname);
3871 return -ENODEV;
3872 }
3873
3874 static int hwsim_get_radio_nl(struct sk_buff *msg, struct genl_info *info)
3875 {
3876 struct mac80211_hwsim_data *data;
3877 struct sk_buff *skb;
3878 int idx, res = -ENODEV;
3879
3880 if (!info->attrs[HWSIM_ATTR_RADIO_ID])
3881 return -EINVAL;
3882 idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
3883
3884 spin_lock_bh(&hwsim_radio_lock);
3885 list_for_each_entry(data, &hwsim_radios, list) {
3886 if (data->idx != idx)
3887 continue;
3888
3889 if (!net_eq(wiphy_net(data->hw->wiphy), genl_info_net(info)))
3890 continue;
3891
3892 skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
3893 if (!skb) {
3894 res = -ENOMEM;
3895 goto out_err;
3896 }
3897
3898 res = mac80211_hwsim_get_radio(skb, data, info->snd_portid,
3899 info->snd_seq, NULL, 0);
3900 if (res < 0) {
3901 nlmsg_free(skb);
3902 goto out_err;
3903 }
3904
3905 res = genlmsg_reply(skb, info);
3906 break;
3907 }
3908
3909 out_err:
3910 spin_unlock_bh(&hwsim_radio_lock);
3911
3912 return res;
3913 }
3914
3915 static int hwsim_dump_radio_nl(struct sk_buff *skb,
3916 struct netlink_callback *cb)
3917 {
3918 int last_idx = cb->args[0] - 1;
3919 struct mac80211_hwsim_data *data = NULL;
3920 int res = 0;
3921 void *hdr;
3922
3923 spin_lock_bh(&hwsim_radio_lock);
3924 cb->seq = hwsim_radios_generation;
3925
3926 if (last_idx >= hwsim_radio_idx-1)
3927 goto done;
3928
3929 list_for_each_entry(data, &hwsim_radios, list) {
3930 if (data->idx <= last_idx)
3931 continue;
3932
3933 if (!net_eq(wiphy_net(data->hw->wiphy), sock_net(skb->sk)))
3934 continue;
3935
3936 res = mac80211_hwsim_get_radio(skb, data,
3937 NETLINK_CB(cb->skb).portid,
3938 cb->nlh->nlmsg_seq, cb,
3939 NLM_F_MULTI);
3940 if (res < 0)
3941 break;
3942
3943 last_idx = data->idx;
3944 }
3945
3946 cb->args[0] = last_idx + 1;
3947
3948 /* list changed, but no new element sent, set interrupted flag */
3949 if (skb->len == 0 && cb->prev_seq && cb->seq != cb->prev_seq) {
3950 hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid,
3951 cb->nlh->nlmsg_seq, &hwsim_genl_family,
3952 NLM_F_MULTI, HWSIM_CMD_GET_RADIO);
3953 if (hdr) {
3954 genl_dump_check_consistent(cb, hdr);
3955 genlmsg_end(skb, hdr);
3956 } else {
3957 res = -EMSGSIZE;
3958 }
3959 }
3960
3961 done:
3962 spin_unlock_bh(&hwsim_radio_lock);
3963 return res ?: skb->len;
3964 }
3965
3966 /* Generic Netlink operations array */
3967 static const struct genl_small_ops hwsim_ops[] = {
3968 {
3969 .cmd = HWSIM_CMD_REGISTER,
3970 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
3971 .doit = hwsim_register_received_nl,
3972 .flags = GENL_UNS_ADMIN_PERM,
3973 },
3974 {
3975 .cmd = HWSIM_CMD_FRAME,
3976 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
3977 .doit = hwsim_cloned_frame_received_nl,
3978 },
3979 {
3980 .cmd = HWSIM_CMD_TX_INFO_FRAME,
3981 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
3982 .doit = hwsim_tx_info_frame_received_nl,
3983 },
3984 {
3985 .cmd = HWSIM_CMD_NEW_RADIO,
3986 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
3987 .doit = hwsim_new_radio_nl,
3988 .flags = GENL_UNS_ADMIN_PERM,
3989 },
3990 {
3991 .cmd = HWSIM_CMD_DEL_RADIO,
3992 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
3993 .doit = hwsim_del_radio_nl,
3994 .flags = GENL_UNS_ADMIN_PERM,
3995 },
3996 {
3997 .cmd = HWSIM_CMD_GET_RADIO,
3998 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
3999 .doit = hwsim_get_radio_nl,
4000 .dumpit = hwsim_dump_radio_nl,
4001 },
4002 };
4003
4004 static struct genl_family hwsim_genl_family __ro_after_init = {
4005 .name = "MAC80211_HWSIM",
4006 .version = 1,
4007 .maxattr = HWSIM_ATTR_MAX,
4008 .policy = hwsim_genl_policy,
4009 .netnsok = true,
4010 .module = THIS_MODULE,
4011 .small_ops = hwsim_ops,
4012 .n_small_ops = ARRAY_SIZE(hwsim_ops),
4013 .mcgrps = hwsim_mcgrps,
4014 .n_mcgrps = ARRAY_SIZE(hwsim_mcgrps),
4015 };
4016
4017 static void remove_user_radios(u32 portid)
4018 {
4019 struct mac80211_hwsim_data *entry, *tmp;
4020 LIST_HEAD(list);
4021
4022 spin_lock_bh(&hwsim_radio_lock);
4023 list_for_each_entry_safe(entry, tmp, &hwsim_radios, list) {
4024 if (entry->destroy_on_close && entry->portid == portid) {
4025 list_move(&entry->list, &list);
4026 rhashtable_remove_fast(&hwsim_radios_rht, &entry->rht,
4027 hwsim_rht_params);
4028 hwsim_radios_generation++;
4029 }
4030 }
4031 spin_unlock_bh(&hwsim_radio_lock);
4032
4033 list_for_each_entry_safe(entry, tmp, &list, list) {
4034 list_del(&entry->list);
4035 mac80211_hwsim_del_radio(entry, wiphy_name(entry->hw->wiphy),
4036 NULL);
4037 }
4038 }
4039
4040 static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
4041 unsigned long state,
4042 void *_notify)
4043 {
4044 struct netlink_notify *notify = _notify;
4045
4046 if (state != NETLINK_URELEASE)
4047 return NOTIFY_DONE;
4048
4049 remove_user_radios(notify->portid);
4050
4051 if (notify->portid == hwsim_net_get_wmediumd(notify->net)) {
4052 printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
4053 " socket, switching to perfect channel medium\n");
4054 hwsim_register_wmediumd(notify->net, 0);
4055 }
4056 return NOTIFY_DONE;
4057
4058 }
4059
4060 static struct notifier_block hwsim_netlink_notifier = {
4061 .notifier_call = mac80211_hwsim_netlink_notify,
4062 };
4063
4064 static int __init hwsim_init_netlink(void)
4065 {
4066 int rc;
4067
4068 printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
4069
4070 rc = genl_register_family(&hwsim_genl_family);
4071 if (rc)
4072 goto failure;
4073
4074 rc = netlink_register_notifier(&hwsim_netlink_notifier);
4075 if (rc) {
4076 genl_unregister_family(&hwsim_genl_family);
4077 goto failure;
4078 }
4079
4080 return 0;
4081
4082 failure:
4083 pr_debug("mac80211_hwsim: error occurred in %s\n", __func__);
4084 return -EINVAL;
4085 }
4086
4087 static __net_init int hwsim_init_net(struct net *net)
4088 {
4089 return hwsim_net_set_netgroup(net);
4090 }
4091
4092 static void __net_exit hwsim_exit_net(struct net *net)
4093 {
4094 struct mac80211_hwsim_data *data, *tmp;
4095 LIST_HEAD(list);
4096
4097 spin_lock_bh(&hwsim_radio_lock);
4098 list_for_each_entry_safe(data, tmp, &hwsim_radios, list) {
4099 if (!net_eq(wiphy_net(data->hw->wiphy), net))
4100 continue;
4101
4102 /* Radios created in init_net are returned to init_net. */
4103 if (data->netgroup == hwsim_net_get_netgroup(&init_net))
4104 continue;
4105
4106 list_move(&data->list, &list);
4107 rhashtable_remove_fast(&hwsim_radios_rht, &data->rht,
4108 hwsim_rht_params);
4109 hwsim_radios_generation++;
4110 }
4111 spin_unlock_bh(&hwsim_radio_lock);
4112
4113 list_for_each_entry_safe(data, tmp, &list, list) {
4114 list_del(&data->list);
4115 mac80211_hwsim_del_radio(data,
4116 wiphy_name(data->hw->wiphy),
4117 NULL);
4118 }
4119
4120 ida_simple_remove(&hwsim_netgroup_ida, hwsim_net_get_netgroup(net));
4121 }
4122
4123 static struct pernet_operations hwsim_net_ops = {
4124 .init = hwsim_init_net,
4125 .exit = hwsim_exit_net,
4126 .id = &hwsim_net_id,
4127 .size = sizeof(struct hwsim_net),
4128 };
4129
4130 static void hwsim_exit_netlink(void)
4131 {
4132 /* unregister the notifier */
4133 netlink_unregister_notifier(&hwsim_netlink_notifier);
4134 /* unregister the family */
4135 genl_unregister_family(&hwsim_genl_family);
4136 }
4137
4138 #if IS_REACHABLE(CONFIG_VIRTIO)
4139 static void hwsim_virtio_tx_done(struct virtqueue *vq)
4140 {
4141 unsigned int len;
4142 struct sk_buff *skb;
4143 unsigned long flags;
4144
4145 spin_lock_irqsave(&hwsim_virtio_lock, flags);
4146 while ((skb = virtqueue_get_buf(vq, &len)))
4147 nlmsg_free(skb);
4148 spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
4149 }
4150
4151 static int hwsim_virtio_handle_cmd(struct sk_buff *skb)
4152 {
4153 struct nlmsghdr *nlh;
4154 struct genlmsghdr *gnlh;
4155 struct nlattr *tb[HWSIM_ATTR_MAX + 1];
4156 struct genl_info info = {};
4157 int err;
4158
4159 nlh = nlmsg_hdr(skb);
4160 gnlh = nlmsg_data(nlh);
4161 err = genlmsg_parse(nlh, &hwsim_genl_family, tb, HWSIM_ATTR_MAX,
4162 hwsim_genl_policy, NULL);
4163 if (err) {
4164 pr_err_ratelimited("hwsim: genlmsg_parse returned %d\n", err);
4165 return err;
4166 }
4167
4168 info.attrs = tb;
4169
4170 switch (gnlh->cmd) {
4171 case HWSIM_CMD_FRAME:
4172 hwsim_cloned_frame_received_nl(skb, &info);
4173 break;
4174 case HWSIM_CMD_TX_INFO_FRAME:
4175 hwsim_tx_info_frame_received_nl(skb, &info);
4176 break;
4177 default:
4178 pr_err_ratelimited("hwsim: invalid cmd: %d\n", gnlh->cmd);
4179 return -EPROTO;
4180 }
4181 return 0;
4182 }
4183
4184 static void hwsim_virtio_rx_work(struct work_struct *work)
4185 {
4186 struct virtqueue *vq;
4187 unsigned int len;
4188 struct sk_buff *skb;
4189 struct scatterlist sg[1];
4190 int err;
4191 unsigned long flags;
4192
4193 spin_lock_irqsave(&hwsim_virtio_lock, flags);
4194 if (!hwsim_virtio_enabled)
4195 goto out_unlock;
4196
4197 skb = virtqueue_get_buf(hwsim_vqs[HWSIM_VQ_RX], &len);
4198 if (!skb)
4199 goto out_unlock;
4200 spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
4201
4202 skb->data = skb->head;
4203 skb_set_tail_pointer(skb, len);
4204 hwsim_virtio_handle_cmd(skb);
4205
4206 spin_lock_irqsave(&hwsim_virtio_lock, flags);
4207 if (!hwsim_virtio_enabled) {
4208 nlmsg_free(skb);
4209 goto out_unlock;
4210 }
4211 vq = hwsim_vqs[HWSIM_VQ_RX];
4212 sg_init_one(sg, skb->head, skb_end_offset(skb));
4213 err = virtqueue_add_inbuf(vq, sg, 1, skb, GFP_ATOMIC);
4214 if (WARN(err, "virtqueue_add_inbuf returned %d\n", err))
4215 nlmsg_free(skb);
4216 else
4217 virtqueue_kick(vq);
4218 schedule_work(&hwsim_virtio_rx);
4219
4220 out_unlock:
4221 spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
4222 }
4223
4224 static void hwsim_virtio_rx_done(struct virtqueue *vq)
4225 {
4226 schedule_work(&hwsim_virtio_rx);
4227 }
4228
4229 static int init_vqs(struct virtio_device *vdev)
4230 {
4231 vq_callback_t *callbacks[HWSIM_NUM_VQS] = {
4232 [HWSIM_VQ_TX] = hwsim_virtio_tx_done,
4233 [HWSIM_VQ_RX] = hwsim_virtio_rx_done,
4234 };
4235 const char *names[HWSIM_NUM_VQS] = {
4236 [HWSIM_VQ_TX] = "tx",
4237 [HWSIM_VQ_RX] = "rx",
4238 };
4239
4240 return virtio_find_vqs(vdev, HWSIM_NUM_VQS,
4241 hwsim_vqs, callbacks, names, NULL);
4242 }
4243
4244 static int fill_vq(struct virtqueue *vq)
4245 {
4246 int i, err;
4247 struct sk_buff *skb;
4248 struct scatterlist sg[1];
4249
4250 for (i = 0; i < virtqueue_get_vring_size(vq); i++) {
4251 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
4252 if (!skb)
4253 return -ENOMEM;
4254
4255 sg_init_one(sg, skb->head, skb_end_offset(skb));
4256 err = virtqueue_add_inbuf(vq, sg, 1, skb, GFP_KERNEL);
4257 if (err) {
4258 nlmsg_free(skb);
4259 return err;
4260 }
4261 }
4262 virtqueue_kick(vq);
4263 return 0;
4264 }
4265
4266 static void remove_vqs(struct virtio_device *vdev)
4267 {
4268 int i;
4269
4270 vdev->config->reset(vdev);
4271
4272 for (i = 0; i < ARRAY_SIZE(hwsim_vqs); i++) {
4273 struct virtqueue *vq = hwsim_vqs[i];
4274 struct sk_buff *skb;
4275
4276 while ((skb = virtqueue_detach_unused_buf(vq)))
4277 nlmsg_free(skb);
4278 }
4279
4280 vdev->config->del_vqs(vdev);
4281 }
4282
4283 static int hwsim_virtio_probe(struct virtio_device *vdev)
4284 {
4285 int err;
4286 unsigned long flags;
4287
4288 spin_lock_irqsave(&hwsim_virtio_lock, flags);
4289 if (hwsim_virtio_enabled) {
4290 spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
4291 return -EEXIST;
4292 }
4293 spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
4294
4295 err = init_vqs(vdev);
4296 if (err)
4297 return err;
4298
4299 err = fill_vq(hwsim_vqs[HWSIM_VQ_RX]);
4300 if (err)
4301 goto out_remove;
4302
4303 spin_lock_irqsave(&hwsim_virtio_lock, flags);
4304 hwsim_virtio_enabled = true;
4305 spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
4306
4307 schedule_work(&hwsim_virtio_rx);
4308 return 0;
4309
4310 out_remove:
4311 remove_vqs(vdev);
4312 return err;
4313 }
4314
4315 static void hwsim_virtio_remove(struct virtio_device *vdev)
4316 {
4317 hwsim_virtio_enabled = false;
4318
4319 cancel_work_sync(&hwsim_virtio_rx);
4320
4321 remove_vqs(vdev);
4322 }
4323
4324 /* MAC80211_HWSIM virtio device id table */
4325 static const struct virtio_device_id id_table[] = {
4326 { VIRTIO_ID_MAC80211_HWSIM, VIRTIO_DEV_ANY_ID },
4327 { 0 }
4328 };
4329 MODULE_DEVICE_TABLE(virtio, id_table);
4330
4331 static struct virtio_driver virtio_hwsim = {
4332 .driver.name = KBUILD_MODNAME,
4333 .driver.owner = THIS_MODULE,
4334 .id_table = id_table,
4335 .probe = hwsim_virtio_probe,
4336 .remove = hwsim_virtio_remove,
4337 };
4338
4339 static int hwsim_register_virtio_driver(void)
4340 {
4341 spin_lock_init(&hwsim_virtio_lock);
4342
4343 return register_virtio_driver(&virtio_hwsim);
4344 }
4345
4346 static void hwsim_unregister_virtio_driver(void)
4347 {
4348 unregister_virtio_driver(&virtio_hwsim);
4349 }
4350 #else
4351 static inline int hwsim_register_virtio_driver(void)
4352 {
4353 return 0;
4354 }
4355
4356 static inline void hwsim_unregister_virtio_driver(void)
4357 {
4358 }
4359 #endif
4360
4361 static int __init init_mac80211_hwsim(void)
4362 {
4363 int i, err;
4364
4365 if (radios < 0 || radios > 100)
4366 return -EINVAL;
4367
4368 if (channels < 1)
4369 return -EINVAL;
4370
4371 spin_lock_init(&hwsim_radio_lock);
4372
4373 err = rhashtable_init(&hwsim_radios_rht, &hwsim_rht_params);
4374 if (err)
4375 return err;
4376
4377 err = register_pernet_device(&hwsim_net_ops);
4378 if (err)
4379 goto out_free_rht;
4380
4381 err = platform_driver_register(&mac80211_hwsim_driver);
4382 if (err)
4383 goto out_unregister_pernet;
4384
4385 err = hwsim_init_netlink();
4386 if (err)
4387 goto out_unregister_driver;
4388
4389 err = hwsim_register_virtio_driver();
4390 if (err)
4391 goto out_exit_netlink;
4392
4393 hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
4394 if (IS_ERR(hwsim_class)) {
4395 err = PTR_ERR(hwsim_class);
4396 goto out_exit_virtio;
4397 }
4398
4399 hwsim_init_s1g_channels(hwsim_channels_s1g);
4400
4401 for (i = 0; i < radios; i++) {
4402 struct hwsim_new_radio_params param = { 0 };
4403
4404 param.channels = channels;
4405
4406 switch (regtest) {
4407 case HWSIM_REGTEST_DIFF_COUNTRY:
4408 if (i < ARRAY_SIZE(hwsim_alpha2s))
4409 param.reg_alpha2 = hwsim_alpha2s[i];
4410 break;
4411 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
4412 if (!i)
4413 param.reg_alpha2 = hwsim_alpha2s[0];
4414 break;
4415 case HWSIM_REGTEST_STRICT_ALL:
4416 param.reg_strict = true;
4417 fallthrough;
4418 case HWSIM_REGTEST_DRIVER_REG_ALL:
4419 param.reg_alpha2 = hwsim_alpha2s[0];
4420 break;
4421 case HWSIM_REGTEST_WORLD_ROAM:
4422 if (i == 0)
4423 param.regd = &hwsim_world_regdom_custom_01;
4424 break;
4425 case HWSIM_REGTEST_CUSTOM_WORLD:
4426 param.regd = &hwsim_world_regdom_custom_01;
4427 break;
4428 case HWSIM_REGTEST_CUSTOM_WORLD_2:
4429 if (i == 0)
4430 param.regd = &hwsim_world_regdom_custom_01;
4431 else if (i == 1)
4432 param.regd = &hwsim_world_regdom_custom_02;
4433 break;
4434 case HWSIM_REGTEST_STRICT_FOLLOW:
4435 if (i == 0) {
4436 param.reg_strict = true;
4437 param.reg_alpha2 = hwsim_alpha2s[0];
4438 }
4439 break;
4440 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
4441 if (i == 0) {
4442 param.reg_strict = true;
4443 param.reg_alpha2 = hwsim_alpha2s[0];
4444 } else if (i == 1) {
4445 param.reg_alpha2 = hwsim_alpha2s[1];
4446 }
4447 break;
4448 case HWSIM_REGTEST_ALL:
4449 switch (i) {
4450 case 0:
4451 param.regd = &hwsim_world_regdom_custom_01;
4452 break;
4453 case 1:
4454 param.regd = &hwsim_world_regdom_custom_02;
4455 break;
4456 case 2:
4457 param.reg_alpha2 = hwsim_alpha2s[0];
4458 break;
4459 case 3:
4460 param.reg_alpha2 = hwsim_alpha2s[1];
4461 break;
4462 case 4:
4463 param.reg_strict = true;
4464 param.reg_alpha2 = hwsim_alpha2s[2];
4465 break;
4466 }
4467 break;
4468 default:
4469 break;
4470 }
4471
4472 param.p2p_device = support_p2p_device;
4473 param.use_chanctx = channels > 1;
4474 param.iftypes = HWSIM_IFTYPE_SUPPORT_MASK;
4475 if (param.p2p_device)
4476 param.iftypes |= BIT(NL80211_IFTYPE_P2P_DEVICE);
4477
4478 err = mac80211_hwsim_new_radio(NULL, &param);
4479 if (err < 0)
4480 goto out_free_radios;
4481 }
4482
4483 hwsim_mon = alloc_netdev(0, "hwsim%d", NET_NAME_UNKNOWN,
4484 hwsim_mon_setup);
4485 if (hwsim_mon == NULL) {
4486 err = -ENOMEM;
4487 goto out_free_radios;
4488 }
4489
4490 rtnl_lock();
4491 err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
4492 if (err < 0) {
4493 rtnl_unlock();
4494 goto out_free_mon;
4495 }
4496
4497 err = register_netdevice(hwsim_mon);
4498 if (err < 0) {
4499 rtnl_unlock();
4500 goto out_free_mon;
4501 }
4502 rtnl_unlock();
4503
4504 return 0;
4505
4506 out_free_mon:
4507 free_netdev(hwsim_mon);
4508 out_free_radios:
4509 mac80211_hwsim_free();
4510 out_exit_virtio:
4511 hwsim_unregister_virtio_driver();
4512 out_exit_netlink:
4513 hwsim_exit_netlink();
4514 out_unregister_driver:
4515 platform_driver_unregister(&mac80211_hwsim_driver);
4516 out_unregister_pernet:
4517 unregister_pernet_device(&hwsim_net_ops);
4518 out_free_rht:
4519 rhashtable_destroy(&hwsim_radios_rht);
4520 return err;
4521 }
4522 module_init(init_mac80211_hwsim);
4523
4524 static void __exit exit_mac80211_hwsim(void)
4525 {
4526 pr_debug("mac80211_hwsim: unregister radios\n");
4527
4528 hwsim_unregister_virtio_driver();
4529 hwsim_exit_netlink();
4530
4531 mac80211_hwsim_free();
4532
4533 rhashtable_destroy(&hwsim_radios_rht);
4534 unregister_netdev(hwsim_mon);
4535 platform_driver_unregister(&mac80211_hwsim_driver);
4536 unregister_pernet_device(&hwsim_net_ops);
4537 }
4538 module_exit(exit_mac80211_hwsim);
Linux with added FPC-III support