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Merge branch 'nvme-5.7' of git://git.infradead.org/nvme into block-5.7
[thirdparty/linux.git] / drivers / net / wireless / mac80211_hwsim.c
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 static const struct ieee80211_rate hwsim_rates[] = {
381 { .bitrate = 10 },
382 { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
383 { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
384 { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
385 { .bitrate = 60 },
386 { .bitrate = 90 },
387 { .bitrate = 120 },
388 { .bitrate = 180 },
389 { .bitrate = 240 },
390 { .bitrate = 360 },
391 { .bitrate = 480 },
392 { .bitrate = 540 }
393 };
394
395 static const u32 hwsim_ciphers[] = {
396 WLAN_CIPHER_SUITE_WEP40,
397 WLAN_CIPHER_SUITE_WEP104,
398 WLAN_CIPHER_SUITE_TKIP,
399 WLAN_CIPHER_SUITE_CCMP,
400 WLAN_CIPHER_SUITE_CCMP_256,
401 WLAN_CIPHER_SUITE_GCMP,
402 WLAN_CIPHER_SUITE_GCMP_256,
403 WLAN_CIPHER_SUITE_AES_CMAC,
404 WLAN_CIPHER_SUITE_BIP_CMAC_256,
405 WLAN_CIPHER_SUITE_BIP_GMAC_128,
406 WLAN_CIPHER_SUITE_BIP_GMAC_256,
407 };
408
409 #define OUI_QCA 0x001374
410 #define QCA_NL80211_SUBCMD_TEST 1
411 enum qca_nl80211_vendor_subcmds {
412 QCA_WLAN_VENDOR_ATTR_TEST = 8,
413 QCA_WLAN_VENDOR_ATTR_MAX = QCA_WLAN_VENDOR_ATTR_TEST
414 };
415
416 static const struct nla_policy
417 hwsim_vendor_test_policy[QCA_WLAN_VENDOR_ATTR_MAX + 1] = {
418 [QCA_WLAN_VENDOR_ATTR_MAX] = { .type = NLA_U32 },
419 };
420
421 static int mac80211_hwsim_vendor_cmd_test(struct wiphy *wiphy,
422 struct wireless_dev *wdev,
423 const void *data, int data_len)
424 {
425 struct sk_buff *skb;
426 struct nlattr *tb[QCA_WLAN_VENDOR_ATTR_MAX + 1];
427 int err;
428 u32 val;
429
430 err = nla_parse_deprecated(tb, QCA_WLAN_VENDOR_ATTR_MAX, data,
431 data_len, hwsim_vendor_test_policy, NULL);
432 if (err)
433 return err;
434 if (!tb[QCA_WLAN_VENDOR_ATTR_TEST])
435 return -EINVAL;
436 val = nla_get_u32(tb[QCA_WLAN_VENDOR_ATTR_TEST]);
437 wiphy_dbg(wiphy, "%s: test=%u\n", __func__, val);
438
439 /* Send a vendor event as a test. Note that this would not normally be
440 * done within a command handler, but rather, based on some other
441 * trigger. For simplicity, this command is used to trigger the event
442 * here.
443 *
444 * event_idx = 0 (index in mac80211_hwsim_vendor_commands)
445 */
446 skb = cfg80211_vendor_event_alloc(wiphy, wdev, 100, 0, GFP_KERNEL);
447 if (skb) {
448 /* skb_put() or nla_put() will fill up data within
449 * NL80211_ATTR_VENDOR_DATA.
450 */
451
452 /* Add vendor data */
453 nla_put_u32(skb, QCA_WLAN_VENDOR_ATTR_TEST, val + 1);
454
455 /* Send the event - this will call nla_nest_end() */
456 cfg80211_vendor_event(skb, GFP_KERNEL);
457 }
458
459 /* Send a response to the command */
460 skb = cfg80211_vendor_cmd_alloc_reply_skb(wiphy, 10);
461 if (!skb)
462 return -ENOMEM;
463
464 /* skb_put() or nla_put() will fill up data within
465 * NL80211_ATTR_VENDOR_DATA
466 */
467 nla_put_u32(skb, QCA_WLAN_VENDOR_ATTR_TEST, val + 2);
468
469 return cfg80211_vendor_cmd_reply(skb);
470 }
471
472 static struct wiphy_vendor_command mac80211_hwsim_vendor_commands[] = {
473 {
474 .info = { .vendor_id = OUI_QCA,
475 .subcmd = QCA_NL80211_SUBCMD_TEST },
476 .flags = WIPHY_VENDOR_CMD_NEED_NETDEV,
477 .doit = mac80211_hwsim_vendor_cmd_test,
478 .policy = hwsim_vendor_test_policy,
479 .maxattr = QCA_WLAN_VENDOR_ATTR_MAX,
480 }
481 };
482
483 /* Advertise support vendor specific events */
484 static const struct nl80211_vendor_cmd_info mac80211_hwsim_vendor_events[] = {
485 { .vendor_id = OUI_QCA, .subcmd = 1 },
486 };
487
488 static spinlock_t hwsim_radio_lock;
489 static LIST_HEAD(hwsim_radios);
490 static struct rhashtable hwsim_radios_rht;
491 static int hwsim_radio_idx;
492 static int hwsim_radios_generation = 1;
493
494 static struct platform_driver mac80211_hwsim_driver = {
495 .driver = {
496 .name = "mac80211_hwsim",
497 },
498 };
499
500 struct mac80211_hwsim_data {
501 struct list_head list;
502 struct rhash_head rht;
503 struct ieee80211_hw *hw;
504 struct device *dev;
505 struct ieee80211_supported_band bands[NUM_NL80211_BANDS];
506 struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)];
507 struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)];
508 struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
509 struct ieee80211_iface_combination if_combination;
510 struct ieee80211_iface_limit if_limits[3];
511 int n_if_limits;
512
513 u32 ciphers[ARRAY_SIZE(hwsim_ciphers)];
514
515 struct mac_address addresses[2];
516 int channels, idx;
517 bool use_chanctx;
518 bool destroy_on_close;
519 u32 portid;
520 char alpha2[2];
521 const struct ieee80211_regdomain *regd;
522
523 struct ieee80211_channel *tmp_chan;
524 struct ieee80211_channel *roc_chan;
525 u32 roc_duration;
526 struct delayed_work roc_start;
527 struct delayed_work roc_done;
528 struct delayed_work hw_scan;
529 struct cfg80211_scan_request *hw_scan_request;
530 struct ieee80211_vif *hw_scan_vif;
531 int scan_chan_idx;
532 u8 scan_addr[ETH_ALEN];
533 struct {
534 struct ieee80211_channel *channel;
535 unsigned long next_start, start, end;
536 } survey_data[ARRAY_SIZE(hwsim_channels_2ghz) +
537 ARRAY_SIZE(hwsim_channels_5ghz)];
538
539 struct ieee80211_channel *channel;
540 u64 beacon_int /* beacon interval in us */;
541 unsigned int rx_filter;
542 bool started, idle, scanning;
543 struct mutex mutex;
544 struct hrtimer beacon_timer;
545 enum ps_mode {
546 PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
547 } ps;
548 bool ps_poll_pending;
549 struct dentry *debugfs;
550
551 uintptr_t pending_cookie;
552 struct sk_buff_head pending; /* packets pending */
553 /*
554 * Only radios in the same group can communicate together (the
555 * channel has to match too). Each bit represents a group. A
556 * radio can be in more than one group.
557 */
558 u64 group;
559
560 /* group shared by radios created in the same netns */
561 int netgroup;
562 /* wmediumd portid responsible for netgroup of this radio */
563 u32 wmediumd;
564
565 /* difference between this hw's clock and the real clock, in usecs */
566 s64 tsf_offset;
567 s64 bcn_delta;
568 /* absolute beacon transmission time. Used to cover up "tx" delay. */
569 u64 abs_bcn_ts;
570
571 /* Stats */
572 u64 tx_pkts;
573 u64 rx_pkts;
574 u64 tx_bytes;
575 u64 rx_bytes;
576 u64 tx_dropped;
577 u64 tx_failed;
578 };
579
580 static const struct rhashtable_params hwsim_rht_params = {
581 .nelem_hint = 2,
582 .automatic_shrinking = true,
583 .key_len = ETH_ALEN,
584 .key_offset = offsetof(struct mac80211_hwsim_data, addresses[1]),
585 .head_offset = offsetof(struct mac80211_hwsim_data, rht),
586 };
587
588 struct hwsim_radiotap_hdr {
589 struct ieee80211_radiotap_header hdr;
590 __le64 rt_tsft;
591 u8 rt_flags;
592 u8 rt_rate;
593 __le16 rt_channel;
594 __le16 rt_chbitmask;
595 } __packed;
596
597 struct hwsim_radiotap_ack_hdr {
598 struct ieee80211_radiotap_header hdr;
599 u8 rt_flags;
600 u8 pad;
601 __le16 rt_channel;
602 __le16 rt_chbitmask;
603 } __packed;
604
605 /* MAC80211_HWSIM netlink family */
606 static struct genl_family hwsim_genl_family;
607
608 enum hwsim_multicast_groups {
609 HWSIM_MCGRP_CONFIG,
610 };
611
612 static const struct genl_multicast_group hwsim_mcgrps[] = {
613 [HWSIM_MCGRP_CONFIG] = { .name = "config", },
614 };
615
616 /* MAC80211_HWSIM netlink policy */
617
618 static const struct nla_policy hwsim_genl_policy[HWSIM_ATTR_MAX + 1] = {
619 [HWSIM_ATTR_ADDR_RECEIVER] = NLA_POLICY_ETH_ADDR_COMPAT,
620 [HWSIM_ATTR_ADDR_TRANSMITTER] = NLA_POLICY_ETH_ADDR_COMPAT,
621 [HWSIM_ATTR_FRAME] = { .type = NLA_BINARY,
622 .len = IEEE80211_MAX_DATA_LEN },
623 [HWSIM_ATTR_FLAGS] = { .type = NLA_U32 },
624 [HWSIM_ATTR_RX_RATE] = { .type = NLA_U32 },
625 [HWSIM_ATTR_SIGNAL] = { .type = NLA_U32 },
626 [HWSIM_ATTR_TX_INFO] = { .type = NLA_BINARY,
627 .len = IEEE80211_TX_MAX_RATES *
628 sizeof(struct hwsim_tx_rate)},
629 [HWSIM_ATTR_COOKIE] = { .type = NLA_U64 },
630 [HWSIM_ATTR_CHANNELS] = { .type = NLA_U32 },
631 [HWSIM_ATTR_RADIO_ID] = { .type = NLA_U32 },
632 [HWSIM_ATTR_REG_HINT_ALPHA2] = { .type = NLA_STRING, .len = 2 },
633 [HWSIM_ATTR_REG_CUSTOM_REG] = { .type = NLA_U32 },
634 [HWSIM_ATTR_REG_STRICT_REG] = { .type = NLA_FLAG },
635 [HWSIM_ATTR_SUPPORT_P2P_DEVICE] = { .type = NLA_FLAG },
636 [HWSIM_ATTR_USE_CHANCTX] = { .type = NLA_FLAG },
637 [HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE] = { .type = NLA_FLAG },
638 [HWSIM_ATTR_RADIO_NAME] = { .type = NLA_STRING },
639 [HWSIM_ATTR_NO_VIF] = { .type = NLA_FLAG },
640 [HWSIM_ATTR_FREQ] = { .type = NLA_U32 },
641 [HWSIM_ATTR_TX_INFO_FLAGS] = { .type = NLA_BINARY },
642 [HWSIM_ATTR_PERM_ADDR] = NLA_POLICY_ETH_ADDR_COMPAT,
643 [HWSIM_ATTR_IFTYPE_SUPPORT] = { .type = NLA_U32 },
644 [HWSIM_ATTR_CIPHER_SUPPORT] = { .type = NLA_BINARY },
645 };
646
647 #if IS_REACHABLE(CONFIG_VIRTIO)
648
649 /* MAC80211_HWSIM virtio queues */
650 static struct virtqueue *hwsim_vqs[HWSIM_NUM_VQS];
651 static bool hwsim_virtio_enabled;
652 static spinlock_t hwsim_virtio_lock;
653
654 static void hwsim_virtio_rx_work(struct work_struct *work);
655 static DECLARE_WORK(hwsim_virtio_rx, hwsim_virtio_rx_work);
656
657 static int hwsim_tx_virtio(struct mac80211_hwsim_data *data,
658 struct sk_buff *skb)
659 {
660 struct scatterlist sg[1];
661 unsigned long flags;
662 int err;
663
664 spin_lock_irqsave(&hwsim_virtio_lock, flags);
665 if (!hwsim_virtio_enabled) {
666 err = -ENODEV;
667 goto out_free;
668 }
669
670 sg_init_one(sg, skb->head, skb_end_offset(skb));
671 err = virtqueue_add_outbuf(hwsim_vqs[HWSIM_VQ_TX], sg, 1, skb,
672 GFP_ATOMIC);
673 if (err)
674 goto out_free;
675 virtqueue_kick(hwsim_vqs[HWSIM_VQ_TX]);
676 spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
677 return 0;
678
679 out_free:
680 spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
681 nlmsg_free(skb);
682 return err;
683 }
684 #else
685 /* cause a linker error if this ends up being needed */
686 extern int hwsim_tx_virtio(struct mac80211_hwsim_data *data,
687 struct sk_buff *skb);
688 #define hwsim_virtio_enabled false
689 #endif
690
691 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
692 struct sk_buff *skb,
693 struct ieee80211_channel *chan);
694
695 /* sysfs attributes */
696 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
697 {
698 struct mac80211_hwsim_data *data = dat;
699 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
700 struct sk_buff *skb;
701 struct ieee80211_pspoll *pspoll;
702
703 if (!vp->assoc)
704 return;
705
706 wiphy_dbg(data->hw->wiphy,
707 "%s: send PS-Poll to %pM for aid %d\n",
708 __func__, vp->bssid, vp->aid);
709
710 skb = dev_alloc_skb(sizeof(*pspoll));
711 if (!skb)
712 return;
713 pspoll = skb_put(skb, sizeof(*pspoll));
714 pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
715 IEEE80211_STYPE_PSPOLL |
716 IEEE80211_FCTL_PM);
717 pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
718 memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
719 memcpy(pspoll->ta, mac, ETH_ALEN);
720
721 rcu_read_lock();
722 mac80211_hwsim_tx_frame(data->hw, skb,
723 rcu_dereference(vif->chanctx_conf)->def.chan);
724 rcu_read_unlock();
725 }
726
727 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
728 struct ieee80211_vif *vif, int ps)
729 {
730 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
731 struct sk_buff *skb;
732 struct ieee80211_hdr *hdr;
733
734 if (!vp->assoc)
735 return;
736
737 wiphy_dbg(data->hw->wiphy,
738 "%s: send data::nullfunc to %pM ps=%d\n",
739 __func__, vp->bssid, ps);
740
741 skb = dev_alloc_skb(sizeof(*hdr));
742 if (!skb)
743 return;
744 hdr = skb_put(skb, sizeof(*hdr) - ETH_ALEN);
745 hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
746 IEEE80211_STYPE_NULLFUNC |
747 IEEE80211_FCTL_TODS |
748 (ps ? IEEE80211_FCTL_PM : 0));
749 hdr->duration_id = cpu_to_le16(0);
750 memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
751 memcpy(hdr->addr2, mac, ETH_ALEN);
752 memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
753
754 rcu_read_lock();
755 mac80211_hwsim_tx_frame(data->hw, skb,
756 rcu_dereference(vif->chanctx_conf)->def.chan);
757 rcu_read_unlock();
758 }
759
760
761 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
762 struct ieee80211_vif *vif)
763 {
764 struct mac80211_hwsim_data *data = dat;
765 hwsim_send_nullfunc(data, mac, vif, 1);
766 }
767
768 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
769 struct ieee80211_vif *vif)
770 {
771 struct mac80211_hwsim_data *data = dat;
772 hwsim_send_nullfunc(data, mac, vif, 0);
773 }
774
775 static int hwsim_fops_ps_read(void *dat, u64 *val)
776 {
777 struct mac80211_hwsim_data *data = dat;
778 *val = data->ps;
779 return 0;
780 }
781
782 static int hwsim_fops_ps_write(void *dat, u64 val)
783 {
784 struct mac80211_hwsim_data *data = dat;
785 enum ps_mode old_ps;
786
787 if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
788 val != PS_MANUAL_POLL)
789 return -EINVAL;
790
791 if (val == PS_MANUAL_POLL) {
792 if (data->ps != PS_ENABLED)
793 return -EINVAL;
794 local_bh_disable();
795 ieee80211_iterate_active_interfaces_atomic(
796 data->hw, IEEE80211_IFACE_ITER_NORMAL,
797 hwsim_send_ps_poll, data);
798 local_bh_enable();
799 return 0;
800 }
801 old_ps = data->ps;
802 data->ps = val;
803
804 local_bh_disable();
805 if (old_ps == PS_DISABLED && val != PS_DISABLED) {
806 ieee80211_iterate_active_interfaces_atomic(
807 data->hw, IEEE80211_IFACE_ITER_NORMAL,
808 hwsim_send_nullfunc_ps, data);
809 } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
810 ieee80211_iterate_active_interfaces_atomic(
811 data->hw, IEEE80211_IFACE_ITER_NORMAL,
812 hwsim_send_nullfunc_no_ps, data);
813 }
814 local_bh_enable();
815
816 return 0;
817 }
818
819 DEFINE_DEBUGFS_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
820 "%llu\n");
821
822 static int hwsim_write_simulate_radar(void *dat, u64 val)
823 {
824 struct mac80211_hwsim_data *data = dat;
825
826 ieee80211_radar_detected(data->hw);
827
828 return 0;
829 }
830
831 DEFINE_DEBUGFS_ATTRIBUTE(hwsim_simulate_radar, NULL,
832 hwsim_write_simulate_radar, "%llu\n");
833
834 static int hwsim_fops_group_read(void *dat, u64 *val)
835 {
836 struct mac80211_hwsim_data *data = dat;
837 *val = data->group;
838 return 0;
839 }
840
841 static int hwsim_fops_group_write(void *dat, u64 val)
842 {
843 struct mac80211_hwsim_data *data = dat;
844 data->group = val;
845 return 0;
846 }
847
848 DEFINE_DEBUGFS_ATTRIBUTE(hwsim_fops_group,
849 hwsim_fops_group_read, hwsim_fops_group_write,
850 "%llx\n");
851
852 static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
853 struct net_device *dev)
854 {
855 /* TODO: allow packet injection */
856 dev_kfree_skb(skb);
857 return NETDEV_TX_OK;
858 }
859
860 static inline u64 mac80211_hwsim_get_tsf_raw(void)
861 {
862 return ktime_to_us(ktime_get_real());
863 }
864
865 static __le64 __mac80211_hwsim_get_tsf(struct mac80211_hwsim_data *data)
866 {
867 u64 now = mac80211_hwsim_get_tsf_raw();
868 return cpu_to_le64(now + data->tsf_offset);
869 }
870
871 static u64 mac80211_hwsim_get_tsf(struct ieee80211_hw *hw,
872 struct ieee80211_vif *vif)
873 {
874 struct mac80211_hwsim_data *data = hw->priv;
875 return le64_to_cpu(__mac80211_hwsim_get_tsf(data));
876 }
877
878 static void mac80211_hwsim_set_tsf(struct ieee80211_hw *hw,
879 struct ieee80211_vif *vif, u64 tsf)
880 {
881 struct mac80211_hwsim_data *data = hw->priv;
882 u64 now = mac80211_hwsim_get_tsf(hw, vif);
883 u32 bcn_int = data->beacon_int;
884 u64 delta = abs(tsf - now);
885
886 /* adjust after beaconing with new timestamp at old TBTT */
887 if (tsf > now) {
888 data->tsf_offset += delta;
889 data->bcn_delta = do_div(delta, bcn_int);
890 } else {
891 data->tsf_offset -= delta;
892 data->bcn_delta = -(s64)do_div(delta, bcn_int);
893 }
894 }
895
896 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
897 struct sk_buff *tx_skb,
898 struct ieee80211_channel *chan)
899 {
900 struct mac80211_hwsim_data *data = hw->priv;
901 struct sk_buff *skb;
902 struct hwsim_radiotap_hdr *hdr;
903 u16 flags;
904 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
905 struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
906
907 if (WARN_ON(!txrate))
908 return;
909
910 if (!netif_running(hwsim_mon))
911 return;
912
913 skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
914 if (skb == NULL)
915 return;
916
917 hdr = skb_push(skb, sizeof(*hdr));
918 hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
919 hdr->hdr.it_pad = 0;
920 hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
921 hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
922 (1 << IEEE80211_RADIOTAP_RATE) |
923 (1 << IEEE80211_RADIOTAP_TSFT) |
924 (1 << IEEE80211_RADIOTAP_CHANNEL));
925 hdr->rt_tsft = __mac80211_hwsim_get_tsf(data);
926 hdr->rt_flags = 0;
927 hdr->rt_rate = txrate->bitrate / 5;
928 hdr->rt_channel = cpu_to_le16(chan->center_freq);
929 flags = IEEE80211_CHAN_2GHZ;
930 if (txrate->flags & IEEE80211_RATE_ERP_G)
931 flags |= IEEE80211_CHAN_OFDM;
932 else
933 flags |= IEEE80211_CHAN_CCK;
934 hdr->rt_chbitmask = cpu_to_le16(flags);
935
936 skb->dev = hwsim_mon;
937 skb_reset_mac_header(skb);
938 skb->ip_summed = CHECKSUM_UNNECESSARY;
939 skb->pkt_type = PACKET_OTHERHOST;
940 skb->protocol = htons(ETH_P_802_2);
941 memset(skb->cb, 0, sizeof(skb->cb));
942 netif_rx(skb);
943 }
944
945
946 static void mac80211_hwsim_monitor_ack(struct ieee80211_channel *chan,
947 const u8 *addr)
948 {
949 struct sk_buff *skb;
950 struct hwsim_radiotap_ack_hdr *hdr;
951 u16 flags;
952 struct ieee80211_hdr *hdr11;
953
954 if (!netif_running(hwsim_mon))
955 return;
956
957 skb = dev_alloc_skb(100);
958 if (skb == NULL)
959 return;
960
961 hdr = skb_put(skb, sizeof(*hdr));
962 hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
963 hdr->hdr.it_pad = 0;
964 hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
965 hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
966 (1 << IEEE80211_RADIOTAP_CHANNEL));
967 hdr->rt_flags = 0;
968 hdr->pad = 0;
969 hdr->rt_channel = cpu_to_le16(chan->center_freq);
970 flags = IEEE80211_CHAN_2GHZ;
971 hdr->rt_chbitmask = cpu_to_le16(flags);
972
973 hdr11 = skb_put(skb, 10);
974 hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
975 IEEE80211_STYPE_ACK);
976 hdr11->duration_id = cpu_to_le16(0);
977 memcpy(hdr11->addr1, addr, ETH_ALEN);
978
979 skb->dev = hwsim_mon;
980 skb_reset_mac_header(skb);
981 skb->ip_summed = CHECKSUM_UNNECESSARY;
982 skb->pkt_type = PACKET_OTHERHOST;
983 skb->protocol = htons(ETH_P_802_2);
984 memset(skb->cb, 0, sizeof(skb->cb));
985 netif_rx(skb);
986 }
987
988 struct mac80211_hwsim_addr_match_data {
989 u8 addr[ETH_ALEN];
990 bool ret;
991 };
992
993 static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
994 struct ieee80211_vif *vif)
995 {
996 struct mac80211_hwsim_addr_match_data *md = data;
997
998 if (memcmp(mac, md->addr, ETH_ALEN) == 0)
999 md->ret = true;
1000 }
1001
1002 static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
1003 const u8 *addr)
1004 {
1005 struct mac80211_hwsim_addr_match_data md = {
1006 .ret = false,
1007 };
1008
1009 if (data->scanning && memcmp(addr, data->scan_addr, ETH_ALEN) == 0)
1010 return true;
1011
1012 memcpy(md.addr, addr, ETH_ALEN);
1013
1014 ieee80211_iterate_active_interfaces_atomic(data->hw,
1015 IEEE80211_IFACE_ITER_NORMAL,
1016 mac80211_hwsim_addr_iter,
1017 &md);
1018
1019 return md.ret;
1020 }
1021
1022 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
1023 struct sk_buff *skb)
1024 {
1025 switch (data->ps) {
1026 case PS_DISABLED:
1027 return true;
1028 case PS_ENABLED:
1029 return false;
1030 case PS_AUTO_POLL:
1031 /* TODO: accept (some) Beacons by default and other frames only
1032 * if pending PS-Poll has been sent */
1033 return true;
1034 case PS_MANUAL_POLL:
1035 /* Allow unicast frames to own address if there is a pending
1036 * PS-Poll */
1037 if (data->ps_poll_pending &&
1038 mac80211_hwsim_addr_match(data, skb->data + 4)) {
1039 data->ps_poll_pending = false;
1040 return true;
1041 }
1042 return false;
1043 }
1044
1045 return true;
1046 }
1047
1048 static int hwsim_unicast_netgroup(struct mac80211_hwsim_data *data,
1049 struct sk_buff *skb, int portid)
1050 {
1051 struct net *net;
1052 bool found = false;
1053 int res = -ENOENT;
1054
1055 rcu_read_lock();
1056 for_each_net_rcu(net) {
1057 if (data->netgroup == hwsim_net_get_netgroup(net)) {
1058 res = genlmsg_unicast(net, skb, portid);
1059 found = true;
1060 break;
1061 }
1062 }
1063 rcu_read_unlock();
1064
1065 if (!found)
1066 nlmsg_free(skb);
1067
1068 return res;
1069 }
1070
1071 static inline u16 trans_tx_rate_flags_ieee2hwsim(struct ieee80211_tx_rate *rate)
1072 {
1073 u16 result = 0;
1074
1075 if (rate->flags & IEEE80211_TX_RC_USE_RTS_CTS)
1076 result |= MAC80211_HWSIM_TX_RC_USE_RTS_CTS;
1077 if (rate->flags & IEEE80211_TX_RC_USE_CTS_PROTECT)
1078 result |= MAC80211_HWSIM_TX_RC_USE_CTS_PROTECT;
1079 if (rate->flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE)
1080 result |= MAC80211_HWSIM_TX_RC_USE_SHORT_PREAMBLE;
1081 if (rate->flags & IEEE80211_TX_RC_MCS)
1082 result |= MAC80211_HWSIM_TX_RC_MCS;
1083 if (rate->flags & IEEE80211_TX_RC_GREEN_FIELD)
1084 result |= MAC80211_HWSIM_TX_RC_GREEN_FIELD;
1085 if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
1086 result |= MAC80211_HWSIM_TX_RC_40_MHZ_WIDTH;
1087 if (rate->flags & IEEE80211_TX_RC_DUP_DATA)
1088 result |= MAC80211_HWSIM_TX_RC_DUP_DATA;
1089 if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
1090 result |= MAC80211_HWSIM_TX_RC_SHORT_GI;
1091 if (rate->flags & IEEE80211_TX_RC_VHT_MCS)
1092 result |= MAC80211_HWSIM_TX_RC_VHT_MCS;
1093 if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
1094 result |= MAC80211_HWSIM_TX_RC_80_MHZ_WIDTH;
1095 if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
1096 result |= MAC80211_HWSIM_TX_RC_160_MHZ_WIDTH;
1097
1098 return result;
1099 }
1100
1101 static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
1102 struct sk_buff *my_skb,
1103 int dst_portid)
1104 {
1105 struct sk_buff *skb;
1106 struct mac80211_hwsim_data *data = hw->priv;
1107 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) my_skb->data;
1108 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(my_skb);
1109 void *msg_head;
1110 unsigned int hwsim_flags = 0;
1111 int i;
1112 struct hwsim_tx_rate tx_attempts[IEEE80211_TX_MAX_RATES];
1113 struct hwsim_tx_rate_flag tx_attempts_flags[IEEE80211_TX_MAX_RATES];
1114 uintptr_t cookie;
1115
1116 if (data->ps != PS_DISABLED)
1117 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1118 /* If the queue contains MAX_QUEUE skb's drop some */
1119 if (skb_queue_len(&data->pending) >= MAX_QUEUE) {
1120 /* Droping until WARN_QUEUE level */
1121 while (skb_queue_len(&data->pending) >= WARN_QUEUE) {
1122 ieee80211_free_txskb(hw, skb_dequeue(&data->pending));
1123 data->tx_dropped++;
1124 }
1125 }
1126
1127 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_ATOMIC);
1128 if (skb == NULL)
1129 goto nla_put_failure;
1130
1131 msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
1132 HWSIM_CMD_FRAME);
1133 if (msg_head == NULL) {
1134 pr_debug("mac80211_hwsim: problem with msg_head\n");
1135 goto nla_put_failure;
1136 }
1137
1138 if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
1139 ETH_ALEN, data->addresses[1].addr))
1140 goto nla_put_failure;
1141
1142 /* We get the skb->data */
1143 if (nla_put(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data))
1144 goto nla_put_failure;
1145
1146 /* We get the flags for this transmission, and we translate them to
1147 wmediumd flags */
1148
1149 if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
1150 hwsim_flags |= HWSIM_TX_CTL_REQ_TX_STATUS;
1151
1152 if (info->flags & IEEE80211_TX_CTL_NO_ACK)
1153 hwsim_flags |= HWSIM_TX_CTL_NO_ACK;
1154
1155 if (nla_put_u32(skb, HWSIM_ATTR_FLAGS, hwsim_flags))
1156 goto nla_put_failure;
1157
1158 if (nla_put_u32(skb, HWSIM_ATTR_FREQ, data->channel->center_freq))
1159 goto nla_put_failure;
1160
1161 /* We get the tx control (rate and retries) info*/
1162
1163 for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
1164 tx_attempts[i].idx = info->status.rates[i].idx;
1165 tx_attempts_flags[i].idx = info->status.rates[i].idx;
1166 tx_attempts[i].count = info->status.rates[i].count;
1167 tx_attempts_flags[i].flags =
1168 trans_tx_rate_flags_ieee2hwsim(
1169 &info->status.rates[i]);
1170 }
1171
1172 if (nla_put(skb, HWSIM_ATTR_TX_INFO,
1173 sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
1174 tx_attempts))
1175 goto nla_put_failure;
1176
1177 if (nla_put(skb, HWSIM_ATTR_TX_INFO_FLAGS,
1178 sizeof(struct hwsim_tx_rate_flag) * IEEE80211_TX_MAX_RATES,
1179 tx_attempts_flags))
1180 goto nla_put_failure;
1181
1182 /* We create a cookie to identify this skb */
1183 data->pending_cookie++;
1184 cookie = data->pending_cookie;
1185 info->rate_driver_data[0] = (void *)cookie;
1186 if (nla_put_u64_64bit(skb, HWSIM_ATTR_COOKIE, cookie, HWSIM_ATTR_PAD))
1187 goto nla_put_failure;
1188
1189 genlmsg_end(skb, msg_head);
1190
1191 if (hwsim_virtio_enabled) {
1192 if (hwsim_tx_virtio(data, skb))
1193 goto err_free_txskb;
1194 } else {
1195 if (hwsim_unicast_netgroup(data, skb, dst_portid))
1196 goto err_free_txskb;
1197 }
1198
1199 /* Enqueue the packet */
1200 skb_queue_tail(&data->pending, my_skb);
1201 data->tx_pkts++;
1202 data->tx_bytes += my_skb->len;
1203 return;
1204
1205 nla_put_failure:
1206 nlmsg_free(skb);
1207 err_free_txskb:
1208 pr_debug("mac80211_hwsim: error occurred in %s\n", __func__);
1209 ieee80211_free_txskb(hw, my_skb);
1210 data->tx_failed++;
1211 }
1212
1213 static bool hwsim_chans_compat(struct ieee80211_channel *c1,
1214 struct ieee80211_channel *c2)
1215 {
1216 if (!c1 || !c2)
1217 return false;
1218
1219 return c1->center_freq == c2->center_freq;
1220 }
1221
1222 struct tx_iter_data {
1223 struct ieee80211_channel *channel;
1224 bool receive;
1225 };
1226
1227 static void mac80211_hwsim_tx_iter(void *_data, u8 *addr,
1228 struct ieee80211_vif *vif)
1229 {
1230 struct tx_iter_data *data = _data;
1231
1232 if (!vif->chanctx_conf)
1233 return;
1234
1235 if (!hwsim_chans_compat(data->channel,
1236 rcu_dereference(vif->chanctx_conf)->def.chan))
1237 return;
1238
1239 data->receive = true;
1240 }
1241
1242 static void mac80211_hwsim_add_vendor_rtap(struct sk_buff *skb)
1243 {
1244 /*
1245 * To enable this code, #define the HWSIM_RADIOTAP_OUI,
1246 * e.g. like this:
1247 * #define HWSIM_RADIOTAP_OUI "\x02\x00\x00"
1248 * (but you should use a valid OUI, not that)
1249 *
1250 * If anyone wants to 'donate' a radiotap OUI/subns code
1251 * please send a patch removing this #ifdef and changing
1252 * the values accordingly.
1253 */
1254 #ifdef HWSIM_RADIOTAP_OUI
1255 struct ieee80211_vendor_radiotap *rtap;
1256
1257 /*
1258 * Note that this code requires the headroom in the SKB
1259 * that was allocated earlier.
1260 */
1261 rtap = skb_push(skb, sizeof(*rtap) + 8 + 4);
1262 rtap->oui[0] = HWSIM_RADIOTAP_OUI[0];
1263 rtap->oui[1] = HWSIM_RADIOTAP_OUI[1];
1264 rtap->oui[2] = HWSIM_RADIOTAP_OUI[2];
1265 rtap->subns = 127;
1266
1267 /*
1268 * Radiotap vendor namespaces can (and should) also be
1269 * split into fields by using the standard radiotap
1270 * presence bitmap mechanism. Use just BIT(0) here for
1271 * the presence bitmap.
1272 */
1273 rtap->present = BIT(0);
1274 /* We have 8 bytes of (dummy) data */
1275 rtap->len = 8;
1276 /* For testing, also require it to be aligned */
1277 rtap->align = 8;
1278 /* And also test that padding works, 4 bytes */
1279 rtap->pad = 4;
1280 /* push the data */
1281 memcpy(rtap->data, "ABCDEFGH", 8);
1282 /* make sure to clear padding, mac80211 doesn't */
1283 memset(rtap->data + 8, 0, 4);
1284
1285 IEEE80211_SKB_RXCB(skb)->flag |= RX_FLAG_RADIOTAP_VENDOR_DATA;
1286 #endif
1287 }
1288
1289 static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
1290 struct sk_buff *skb,
1291 struct ieee80211_channel *chan)
1292 {
1293 struct mac80211_hwsim_data *data = hw->priv, *data2;
1294 bool ack = false;
1295 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1296 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1297 struct ieee80211_rx_status rx_status;
1298 u64 now;
1299
1300 memset(&rx_status, 0, sizeof(rx_status));
1301 rx_status.flag |= RX_FLAG_MACTIME_START;
1302 rx_status.freq = chan->center_freq;
1303 rx_status.band = chan->band;
1304 if (info->control.rates[0].flags & IEEE80211_TX_RC_VHT_MCS) {
1305 rx_status.rate_idx =
1306 ieee80211_rate_get_vht_mcs(&info->control.rates[0]);
1307 rx_status.nss =
1308 ieee80211_rate_get_vht_nss(&info->control.rates[0]);
1309 rx_status.encoding = RX_ENC_VHT;
1310 } else {
1311 rx_status.rate_idx = info->control.rates[0].idx;
1312 if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
1313 rx_status.encoding = RX_ENC_HT;
1314 }
1315 if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
1316 rx_status.bw = RATE_INFO_BW_40;
1317 else if (info->control.rates[0].flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
1318 rx_status.bw = RATE_INFO_BW_80;
1319 else if (info->control.rates[0].flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
1320 rx_status.bw = RATE_INFO_BW_160;
1321 else
1322 rx_status.bw = RATE_INFO_BW_20;
1323 if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
1324 rx_status.enc_flags |= RX_ENC_FLAG_SHORT_GI;
1325 /* TODO: simulate real signal strength (and optional packet loss) */
1326 rx_status.signal = -50;
1327 if (info->control.vif)
1328 rx_status.signal += info->control.vif->bss_conf.txpower;
1329
1330 if (data->ps != PS_DISABLED)
1331 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1332
1333 /* release the skb's source info */
1334 skb_orphan(skb);
1335 skb_dst_drop(skb);
1336 skb->mark = 0;
1337 skb_ext_reset(skb);
1338 nf_reset_ct(skb);
1339
1340 /*
1341 * Get absolute mactime here so all HWs RX at the "same time", and
1342 * absolute TX time for beacon mactime so the timestamp matches.
1343 * Giving beacons a different mactime than non-beacons looks messy, but
1344 * it helps the Toffset be exact and a ~10us mactime discrepancy
1345 * probably doesn't really matter.
1346 */
1347 if (ieee80211_is_beacon(hdr->frame_control) ||
1348 ieee80211_is_probe_resp(hdr->frame_control)) {
1349 rx_status.boottime_ns = ktime_get_boottime_ns();
1350 now = data->abs_bcn_ts;
1351 } else {
1352 now = mac80211_hwsim_get_tsf_raw();
1353 }
1354
1355 /* Copy skb to all enabled radios that are on the current frequency */
1356 spin_lock(&hwsim_radio_lock);
1357 list_for_each_entry(data2, &hwsim_radios, list) {
1358 struct sk_buff *nskb;
1359 struct tx_iter_data tx_iter_data = {
1360 .receive = false,
1361 .channel = chan,
1362 };
1363
1364 if (data == data2)
1365 continue;
1366
1367 if (!data2->started || (data2->idle && !data2->tmp_chan) ||
1368 !hwsim_ps_rx_ok(data2, skb))
1369 continue;
1370
1371 if (!(data->group & data2->group))
1372 continue;
1373
1374 if (data->netgroup != data2->netgroup)
1375 continue;
1376
1377 if (!hwsim_chans_compat(chan, data2->tmp_chan) &&
1378 !hwsim_chans_compat(chan, data2->channel)) {
1379 ieee80211_iterate_active_interfaces_atomic(
1380 data2->hw, IEEE80211_IFACE_ITER_NORMAL,
1381 mac80211_hwsim_tx_iter, &tx_iter_data);
1382 if (!tx_iter_data.receive)
1383 continue;
1384 }
1385
1386 /*
1387 * reserve some space for our vendor and the normal
1388 * radiotap header, since we're copying anyway
1389 */
1390 if (skb->len < PAGE_SIZE && paged_rx) {
1391 struct page *page = alloc_page(GFP_ATOMIC);
1392
1393 if (!page)
1394 continue;
1395
1396 nskb = dev_alloc_skb(128);
1397 if (!nskb) {
1398 __free_page(page);
1399 continue;
1400 }
1401
1402 memcpy(page_address(page), skb->data, skb->len);
1403 skb_add_rx_frag(nskb, 0, page, 0, skb->len, skb->len);
1404 } else {
1405 nskb = skb_copy(skb, GFP_ATOMIC);
1406 if (!nskb)
1407 continue;
1408 }
1409
1410 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
1411 ack = true;
1412
1413 rx_status.mactime = now + data2->tsf_offset;
1414
1415 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
1416
1417 mac80211_hwsim_add_vendor_rtap(nskb);
1418
1419 data2->rx_pkts++;
1420 data2->rx_bytes += nskb->len;
1421 ieee80211_rx_irqsafe(data2->hw, nskb);
1422 }
1423 spin_unlock(&hwsim_radio_lock);
1424
1425 return ack;
1426 }
1427
1428 static void mac80211_hwsim_tx(struct ieee80211_hw *hw,
1429 struct ieee80211_tx_control *control,
1430 struct sk_buff *skb)
1431 {
1432 struct mac80211_hwsim_data *data = hw->priv;
1433 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1434 struct ieee80211_hdr *hdr = (void *)skb->data;
1435 struct ieee80211_chanctx_conf *chanctx_conf;
1436 struct ieee80211_channel *channel;
1437 bool ack;
1438 u32 _portid;
1439
1440 if (WARN_ON(skb->len < 10)) {
1441 /* Should not happen; just a sanity check for addr1 use */
1442 ieee80211_free_txskb(hw, skb);
1443 return;
1444 }
1445
1446 if (!data->use_chanctx) {
1447 channel = data->channel;
1448 } else if (txi->hw_queue == 4) {
1449 channel = data->tmp_chan;
1450 } else {
1451 chanctx_conf = rcu_dereference(txi->control.vif->chanctx_conf);
1452 if (chanctx_conf)
1453 channel = chanctx_conf->def.chan;
1454 else
1455 channel = NULL;
1456 }
1457
1458 if (WARN(!channel, "TX w/o channel - queue = %d\n", txi->hw_queue)) {
1459 ieee80211_free_txskb(hw, skb);
1460 return;
1461 }
1462
1463 if (data->idle && !data->tmp_chan) {
1464 wiphy_dbg(hw->wiphy, "Trying to TX when idle - reject\n");
1465 ieee80211_free_txskb(hw, skb);
1466 return;
1467 }
1468
1469 if (txi->control.vif)
1470 hwsim_check_magic(txi->control.vif);
1471 if (control->sta)
1472 hwsim_check_sta_magic(control->sta);
1473
1474 if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE))
1475 ieee80211_get_tx_rates(txi->control.vif, control->sta, skb,
1476 txi->control.rates,
1477 ARRAY_SIZE(txi->control.rates));
1478
1479 if (skb->len >= 24 + 8 &&
1480 ieee80211_is_probe_resp(hdr->frame_control)) {
1481 /* fake header transmission time */
1482 struct ieee80211_mgmt *mgmt;
1483 struct ieee80211_rate *txrate;
1484 u64 ts;
1485
1486 mgmt = (struct ieee80211_mgmt *)skb->data;
1487 txrate = ieee80211_get_tx_rate(hw, txi);
1488 ts = mac80211_hwsim_get_tsf_raw();
1489 mgmt->u.probe_resp.timestamp =
1490 cpu_to_le64(ts + data->tsf_offset +
1491 24 * 8 * 10 / txrate->bitrate);
1492 }
1493
1494 mac80211_hwsim_monitor_rx(hw, skb, channel);
1495
1496 /* wmediumd mode check */
1497 _portid = READ_ONCE(data->wmediumd);
1498
1499 if (_portid || hwsim_virtio_enabled)
1500 return mac80211_hwsim_tx_frame_nl(hw, skb, _portid);
1501
1502 /* NO wmediumd detected, perfect medium simulation */
1503 data->tx_pkts++;
1504 data->tx_bytes += skb->len;
1505 ack = mac80211_hwsim_tx_frame_no_nl(hw, skb, channel);
1506
1507 if (ack && skb->len >= 16)
1508 mac80211_hwsim_monitor_ack(channel, hdr->addr2);
1509
1510 ieee80211_tx_info_clear_status(txi);
1511
1512 /* frame was transmitted at most favorable rate at first attempt */
1513 txi->control.rates[0].count = 1;
1514 txi->control.rates[1].idx = -1;
1515
1516 if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
1517 txi->flags |= IEEE80211_TX_STAT_ACK;
1518 ieee80211_tx_status_irqsafe(hw, skb);
1519 }
1520
1521
1522 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
1523 {
1524 struct mac80211_hwsim_data *data = hw->priv;
1525 wiphy_dbg(hw->wiphy, "%s\n", __func__);
1526 data->started = true;
1527 return 0;
1528 }
1529
1530
1531 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
1532 {
1533 struct mac80211_hwsim_data *data = hw->priv;
1534 data->started = false;
1535 hrtimer_cancel(&data->beacon_timer);
1536 wiphy_dbg(hw->wiphy, "%s\n", __func__);
1537 }
1538
1539
1540 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
1541 struct ieee80211_vif *vif)
1542 {
1543 wiphy_dbg(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1544 __func__, ieee80211_vif_type_p2p(vif),
1545 vif->addr);
1546 hwsim_set_magic(vif);
1547
1548 vif->cab_queue = 0;
1549 vif->hw_queue[IEEE80211_AC_VO] = 0;
1550 vif->hw_queue[IEEE80211_AC_VI] = 1;
1551 vif->hw_queue[IEEE80211_AC_BE] = 2;
1552 vif->hw_queue[IEEE80211_AC_BK] = 3;
1553
1554 return 0;
1555 }
1556
1557
1558 static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
1559 struct ieee80211_vif *vif,
1560 enum nl80211_iftype newtype,
1561 bool newp2p)
1562 {
1563 newtype = ieee80211_iftype_p2p(newtype, newp2p);
1564 wiphy_dbg(hw->wiphy,
1565 "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
1566 __func__, ieee80211_vif_type_p2p(vif),
1567 newtype, vif->addr);
1568 hwsim_check_magic(vif);
1569
1570 /*
1571 * interface may change from non-AP to AP in
1572 * which case this needs to be set up again
1573 */
1574 vif->cab_queue = 0;
1575
1576 return 0;
1577 }
1578
1579 static void mac80211_hwsim_remove_interface(
1580 struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1581 {
1582 wiphy_dbg(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1583 __func__, ieee80211_vif_type_p2p(vif),
1584 vif->addr);
1585 hwsim_check_magic(vif);
1586 hwsim_clear_magic(vif);
1587 }
1588
1589 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
1590 struct sk_buff *skb,
1591 struct ieee80211_channel *chan)
1592 {
1593 struct mac80211_hwsim_data *data = hw->priv;
1594 u32 _pid = READ_ONCE(data->wmediumd);
1595
1596 if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE)) {
1597 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1598 ieee80211_get_tx_rates(txi->control.vif, NULL, skb,
1599 txi->control.rates,
1600 ARRAY_SIZE(txi->control.rates));
1601 }
1602
1603 mac80211_hwsim_monitor_rx(hw, skb, chan);
1604
1605 if (_pid || hwsim_virtio_enabled)
1606 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
1607
1608 mac80211_hwsim_tx_frame_no_nl(hw, skb, chan);
1609 dev_kfree_skb(skb);
1610 }
1611
1612 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
1613 struct ieee80211_vif *vif)
1614 {
1615 struct mac80211_hwsim_data *data = arg;
1616 struct ieee80211_hw *hw = data->hw;
1617 struct ieee80211_tx_info *info;
1618 struct ieee80211_rate *txrate;
1619 struct ieee80211_mgmt *mgmt;
1620 struct sk_buff *skb;
1621
1622 hwsim_check_magic(vif);
1623
1624 if (vif->type != NL80211_IFTYPE_AP &&
1625 vif->type != NL80211_IFTYPE_MESH_POINT &&
1626 vif->type != NL80211_IFTYPE_ADHOC &&
1627 vif->type != NL80211_IFTYPE_OCB)
1628 return;
1629
1630 skb = ieee80211_beacon_get(hw, vif);
1631 if (skb == NULL)
1632 return;
1633 info = IEEE80211_SKB_CB(skb);
1634 if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE))
1635 ieee80211_get_tx_rates(vif, NULL, skb,
1636 info->control.rates,
1637 ARRAY_SIZE(info->control.rates));
1638
1639 txrate = ieee80211_get_tx_rate(hw, info);
1640
1641 mgmt = (struct ieee80211_mgmt *) skb->data;
1642 /* fake header transmission time */
1643 data->abs_bcn_ts = mac80211_hwsim_get_tsf_raw();
1644 mgmt->u.beacon.timestamp = cpu_to_le64(data->abs_bcn_ts +
1645 data->tsf_offset +
1646 24 * 8 * 10 / txrate->bitrate);
1647
1648 mac80211_hwsim_tx_frame(hw, skb,
1649 rcu_dereference(vif->chanctx_conf)->def.chan);
1650
1651 while ((skb = ieee80211_get_buffered_bc(hw, vif)) != NULL) {
1652 mac80211_hwsim_tx_frame(hw, skb,
1653 rcu_dereference(vif->chanctx_conf)->def.chan);
1654 }
1655
1656 if (vif->csa_active && ieee80211_csa_is_complete(vif))
1657 ieee80211_csa_finish(vif);
1658 }
1659
1660 static enum hrtimer_restart
1661 mac80211_hwsim_beacon(struct hrtimer *timer)
1662 {
1663 struct mac80211_hwsim_data *data =
1664 container_of(timer, struct mac80211_hwsim_data, beacon_timer);
1665 struct ieee80211_hw *hw = data->hw;
1666 u64 bcn_int = data->beacon_int;
1667
1668 if (!data->started)
1669 return HRTIMER_NORESTART;
1670
1671 ieee80211_iterate_active_interfaces_atomic(
1672 hw, IEEE80211_IFACE_ITER_NORMAL,
1673 mac80211_hwsim_beacon_tx, data);
1674
1675 /* beacon at new TBTT + beacon interval */
1676 if (data->bcn_delta) {
1677 bcn_int -= data->bcn_delta;
1678 data->bcn_delta = 0;
1679 }
1680 hrtimer_forward(&data->beacon_timer, hrtimer_get_expires(timer),
1681 ns_to_ktime(bcn_int * NSEC_PER_USEC));
1682 return HRTIMER_RESTART;
1683 }
1684
1685 static const char * const hwsim_chanwidths[] = {
1686 [NL80211_CHAN_WIDTH_5] = "ht5",
1687 [NL80211_CHAN_WIDTH_10] = "ht10",
1688 [NL80211_CHAN_WIDTH_20_NOHT] = "noht",
1689 [NL80211_CHAN_WIDTH_20] = "ht20",
1690 [NL80211_CHAN_WIDTH_40] = "ht40",
1691 [NL80211_CHAN_WIDTH_80] = "vht80",
1692 [NL80211_CHAN_WIDTH_80P80] = "vht80p80",
1693 [NL80211_CHAN_WIDTH_160] = "vht160",
1694 };
1695
1696 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
1697 {
1698 struct mac80211_hwsim_data *data = hw->priv;
1699 struct ieee80211_conf *conf = &hw->conf;
1700 static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
1701 [IEEE80211_SMPS_AUTOMATIC] = "auto",
1702 [IEEE80211_SMPS_OFF] = "off",
1703 [IEEE80211_SMPS_STATIC] = "static",
1704 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
1705 };
1706 int idx;
1707
1708 if (conf->chandef.chan)
1709 wiphy_dbg(hw->wiphy,
1710 "%s (freq=%d(%d - %d)/%s idle=%d ps=%d smps=%s)\n",
1711 __func__,
1712 conf->chandef.chan->center_freq,
1713 conf->chandef.center_freq1,
1714 conf->chandef.center_freq2,
1715 hwsim_chanwidths[conf->chandef.width],
1716 !!(conf->flags & IEEE80211_CONF_IDLE),
1717 !!(conf->flags & IEEE80211_CONF_PS),
1718 smps_modes[conf->smps_mode]);
1719 else
1720 wiphy_dbg(hw->wiphy,
1721 "%s (freq=0 idle=%d ps=%d smps=%s)\n",
1722 __func__,
1723 !!(conf->flags & IEEE80211_CONF_IDLE),
1724 !!(conf->flags & IEEE80211_CONF_PS),
1725 smps_modes[conf->smps_mode]);
1726
1727 data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
1728
1729 WARN_ON(conf->chandef.chan && data->use_chanctx);
1730
1731 mutex_lock(&data->mutex);
1732 if (data->scanning && conf->chandef.chan) {
1733 for (idx = 0; idx < ARRAY_SIZE(data->survey_data); idx++) {
1734 if (data->survey_data[idx].channel == data->channel) {
1735 data->survey_data[idx].start =
1736 data->survey_data[idx].next_start;
1737 data->survey_data[idx].end = jiffies;
1738 break;
1739 }
1740 }
1741
1742 data->channel = conf->chandef.chan;
1743
1744 for (idx = 0; idx < ARRAY_SIZE(data->survey_data); idx++) {
1745 if (data->survey_data[idx].channel &&
1746 data->survey_data[idx].channel != data->channel)
1747 continue;
1748 data->survey_data[idx].channel = data->channel;
1749 data->survey_data[idx].next_start = jiffies;
1750 break;
1751 }
1752 } else {
1753 data->channel = conf->chandef.chan;
1754 }
1755 mutex_unlock(&data->mutex);
1756
1757 if (!data->started || !data->beacon_int)
1758 hrtimer_cancel(&data->beacon_timer);
1759 else if (!hrtimer_is_queued(&data->beacon_timer)) {
1760 u64 tsf = mac80211_hwsim_get_tsf(hw, NULL);
1761 u32 bcn_int = data->beacon_int;
1762 u64 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1763
1764 hrtimer_start(&data->beacon_timer,
1765 ns_to_ktime(until_tbtt * NSEC_PER_USEC),
1766 HRTIMER_MODE_REL_SOFT);
1767 }
1768
1769 return 0;
1770 }
1771
1772
1773 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
1774 unsigned int changed_flags,
1775 unsigned int *total_flags,u64 multicast)
1776 {
1777 struct mac80211_hwsim_data *data = hw->priv;
1778
1779 wiphy_dbg(hw->wiphy, "%s\n", __func__);
1780
1781 data->rx_filter = 0;
1782 if (*total_flags & FIF_ALLMULTI)
1783 data->rx_filter |= FIF_ALLMULTI;
1784
1785 *total_flags = data->rx_filter;
1786 }
1787
1788 static void mac80211_hwsim_bcn_en_iter(void *data, u8 *mac,
1789 struct ieee80211_vif *vif)
1790 {
1791 unsigned int *count = data;
1792 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1793
1794 if (vp->bcn_en)
1795 (*count)++;
1796 }
1797
1798 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
1799 struct ieee80211_vif *vif,
1800 struct ieee80211_bss_conf *info,
1801 u32 changed)
1802 {
1803 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1804 struct mac80211_hwsim_data *data = hw->priv;
1805
1806 hwsim_check_magic(vif);
1807
1808 wiphy_dbg(hw->wiphy, "%s(changed=0x%x vif->addr=%pM)\n",
1809 __func__, changed, vif->addr);
1810
1811 if (changed & BSS_CHANGED_BSSID) {
1812 wiphy_dbg(hw->wiphy, "%s: BSSID changed: %pM\n",
1813 __func__, info->bssid);
1814 memcpy(vp->bssid, info->bssid, ETH_ALEN);
1815 }
1816
1817 if (changed & BSS_CHANGED_ASSOC) {
1818 wiphy_dbg(hw->wiphy, " ASSOC: assoc=%d aid=%d\n",
1819 info->assoc, info->aid);
1820 vp->assoc = info->assoc;
1821 vp->aid = info->aid;
1822 }
1823
1824 if (changed & BSS_CHANGED_BEACON_ENABLED) {
1825 wiphy_dbg(hw->wiphy, " BCN EN: %d (BI=%u)\n",
1826 info->enable_beacon, info->beacon_int);
1827 vp->bcn_en = info->enable_beacon;
1828 if (data->started &&
1829 !hrtimer_is_queued(&data->beacon_timer) &&
1830 info->enable_beacon) {
1831 u64 tsf, until_tbtt;
1832 u32 bcn_int;
1833 data->beacon_int = info->beacon_int * 1024;
1834 tsf = mac80211_hwsim_get_tsf(hw, vif);
1835 bcn_int = data->beacon_int;
1836 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1837
1838 hrtimer_start(&data->beacon_timer,
1839 ns_to_ktime(until_tbtt * NSEC_PER_USEC),
1840 HRTIMER_MODE_REL_SOFT);
1841 } else if (!info->enable_beacon) {
1842 unsigned int count = 0;
1843 ieee80211_iterate_active_interfaces_atomic(
1844 data->hw, IEEE80211_IFACE_ITER_NORMAL,
1845 mac80211_hwsim_bcn_en_iter, &count);
1846 wiphy_dbg(hw->wiphy, " beaconing vifs remaining: %u",
1847 count);
1848 if (count == 0) {
1849 hrtimer_cancel(&data->beacon_timer);
1850 data->beacon_int = 0;
1851 }
1852 }
1853 }
1854
1855 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1856 wiphy_dbg(hw->wiphy, " ERP_CTS_PROT: %d\n",
1857 info->use_cts_prot);
1858 }
1859
1860 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1861 wiphy_dbg(hw->wiphy, " ERP_PREAMBLE: %d\n",
1862 info->use_short_preamble);
1863 }
1864
1865 if (changed & BSS_CHANGED_ERP_SLOT) {
1866 wiphy_dbg(hw->wiphy, " ERP_SLOT: %d\n", info->use_short_slot);
1867 }
1868
1869 if (changed & BSS_CHANGED_HT) {
1870 wiphy_dbg(hw->wiphy, " HT: op_mode=0x%x\n",
1871 info->ht_operation_mode);
1872 }
1873
1874 if (changed & BSS_CHANGED_BASIC_RATES) {
1875 wiphy_dbg(hw->wiphy, " BASIC_RATES: 0x%llx\n",
1876 (unsigned long long) info->basic_rates);
1877 }
1878
1879 if (changed & BSS_CHANGED_TXPOWER)
1880 wiphy_dbg(hw->wiphy, " TX Power: %d dBm\n", info->txpower);
1881 }
1882
1883 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
1884 struct ieee80211_vif *vif,
1885 struct ieee80211_sta *sta)
1886 {
1887 hwsim_check_magic(vif);
1888 hwsim_set_sta_magic(sta);
1889
1890 return 0;
1891 }
1892
1893 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
1894 struct ieee80211_vif *vif,
1895 struct ieee80211_sta *sta)
1896 {
1897 hwsim_check_magic(vif);
1898 hwsim_clear_sta_magic(sta);
1899
1900 return 0;
1901 }
1902
1903 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
1904 struct ieee80211_vif *vif,
1905 enum sta_notify_cmd cmd,
1906 struct ieee80211_sta *sta)
1907 {
1908 hwsim_check_magic(vif);
1909
1910 switch (cmd) {
1911 case STA_NOTIFY_SLEEP:
1912 case STA_NOTIFY_AWAKE:
1913 /* TODO: make good use of these flags */
1914 break;
1915 default:
1916 WARN(1, "Invalid sta notify: %d\n", cmd);
1917 break;
1918 }
1919 }
1920
1921 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
1922 struct ieee80211_sta *sta,
1923 bool set)
1924 {
1925 hwsim_check_sta_magic(sta);
1926 return 0;
1927 }
1928
1929 static int mac80211_hwsim_conf_tx(
1930 struct ieee80211_hw *hw,
1931 struct ieee80211_vif *vif, u16 queue,
1932 const struct ieee80211_tx_queue_params *params)
1933 {
1934 wiphy_dbg(hw->wiphy,
1935 "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
1936 __func__, queue,
1937 params->txop, params->cw_min,
1938 params->cw_max, params->aifs);
1939 return 0;
1940 }
1941
1942 static int mac80211_hwsim_get_survey(struct ieee80211_hw *hw, int idx,
1943 struct survey_info *survey)
1944 {
1945 struct mac80211_hwsim_data *hwsim = hw->priv;
1946
1947 if (idx < 0 || idx >= ARRAY_SIZE(hwsim->survey_data))
1948 return -ENOENT;
1949
1950 mutex_lock(&hwsim->mutex);
1951 survey->channel = hwsim->survey_data[idx].channel;
1952 if (!survey->channel) {
1953 mutex_unlock(&hwsim->mutex);
1954 return -ENOENT;
1955 }
1956
1957 /*
1958 * Magically conjured dummy values --- this is only ok for simulated hardware.
1959 *
1960 * A real driver which cannot determine real values noise MUST NOT
1961 * report any, especially not a magically conjured ones :-)
1962 */
1963 survey->filled = SURVEY_INFO_NOISE_DBM |
1964 SURVEY_INFO_TIME |
1965 SURVEY_INFO_TIME_BUSY;
1966 survey->noise = -92;
1967 survey->time =
1968 jiffies_to_msecs(hwsim->survey_data[idx].end -
1969 hwsim->survey_data[idx].start);
1970 /* report 12.5% of channel time is used */
1971 survey->time_busy = survey->time/8;
1972 mutex_unlock(&hwsim->mutex);
1973
1974 return 0;
1975 }
1976
1977 #ifdef CONFIG_NL80211_TESTMODE
1978 /*
1979 * This section contains example code for using netlink
1980 * attributes with the testmode command in nl80211.
1981 */
1982
1983 /* These enums need to be kept in sync with userspace */
1984 enum hwsim_testmode_attr {
1985 __HWSIM_TM_ATTR_INVALID = 0,
1986 HWSIM_TM_ATTR_CMD = 1,
1987 HWSIM_TM_ATTR_PS = 2,
1988
1989 /* keep last */
1990 __HWSIM_TM_ATTR_AFTER_LAST,
1991 HWSIM_TM_ATTR_MAX = __HWSIM_TM_ATTR_AFTER_LAST - 1
1992 };
1993
1994 enum hwsim_testmode_cmd {
1995 HWSIM_TM_CMD_SET_PS = 0,
1996 HWSIM_TM_CMD_GET_PS = 1,
1997 HWSIM_TM_CMD_STOP_QUEUES = 2,
1998 HWSIM_TM_CMD_WAKE_QUEUES = 3,
1999 };
2000
2001 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
2002 [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
2003 [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
2004 };
2005
2006 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
2007 struct ieee80211_vif *vif,
2008 void *data, int len)
2009 {
2010 struct mac80211_hwsim_data *hwsim = hw->priv;
2011 struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
2012 struct sk_buff *skb;
2013 int err, ps;
2014
2015 err = nla_parse_deprecated(tb, HWSIM_TM_ATTR_MAX, data, len,
2016 hwsim_testmode_policy, NULL);
2017 if (err)
2018 return err;
2019
2020 if (!tb[HWSIM_TM_ATTR_CMD])
2021 return -EINVAL;
2022
2023 switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
2024 case HWSIM_TM_CMD_SET_PS:
2025 if (!tb[HWSIM_TM_ATTR_PS])
2026 return -EINVAL;
2027 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
2028 return hwsim_fops_ps_write(hwsim, ps);
2029 case HWSIM_TM_CMD_GET_PS:
2030 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
2031 nla_total_size(sizeof(u32)));
2032 if (!skb)
2033 return -ENOMEM;
2034 if (nla_put_u32(skb, HWSIM_TM_ATTR_PS, hwsim->ps))
2035 goto nla_put_failure;
2036 return cfg80211_testmode_reply(skb);
2037 case HWSIM_TM_CMD_STOP_QUEUES:
2038 ieee80211_stop_queues(hw);
2039 return 0;
2040 case HWSIM_TM_CMD_WAKE_QUEUES:
2041 ieee80211_wake_queues(hw);
2042 return 0;
2043 default:
2044 return -EOPNOTSUPP;
2045 }
2046
2047 nla_put_failure:
2048 kfree_skb(skb);
2049 return -ENOBUFS;
2050 }
2051 #endif
2052
2053 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
2054 struct ieee80211_vif *vif,
2055 struct ieee80211_ampdu_params *params)
2056 {
2057 struct ieee80211_sta *sta = params->sta;
2058 enum ieee80211_ampdu_mlme_action action = params->action;
2059 u16 tid = params->tid;
2060
2061 switch (action) {
2062 case IEEE80211_AMPDU_TX_START:
2063 return IEEE80211_AMPDU_TX_START_IMMEDIATE;
2064 case IEEE80211_AMPDU_TX_STOP_CONT:
2065 case IEEE80211_AMPDU_TX_STOP_FLUSH:
2066 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
2067 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
2068 break;
2069 case IEEE80211_AMPDU_TX_OPERATIONAL:
2070 break;
2071 case IEEE80211_AMPDU_RX_START:
2072 case IEEE80211_AMPDU_RX_STOP:
2073 break;
2074 default:
2075 return -EOPNOTSUPP;
2076 }
2077
2078 return 0;
2079 }
2080
2081 static void mac80211_hwsim_flush(struct ieee80211_hw *hw,
2082 struct ieee80211_vif *vif,
2083 u32 queues, bool drop)
2084 {
2085 /* Not implemented, queues only on kernel side */
2086 }
2087
2088 static void hw_scan_work(struct work_struct *work)
2089 {
2090 struct mac80211_hwsim_data *hwsim =
2091 container_of(work, struct mac80211_hwsim_data, hw_scan.work);
2092 struct cfg80211_scan_request *req = hwsim->hw_scan_request;
2093 int dwell, i;
2094
2095 mutex_lock(&hwsim->mutex);
2096 if (hwsim->scan_chan_idx >= req->n_channels) {
2097 struct cfg80211_scan_info info = {
2098 .aborted = false,
2099 };
2100
2101 wiphy_dbg(hwsim->hw->wiphy, "hw scan complete\n");
2102 ieee80211_scan_completed(hwsim->hw, &info);
2103 hwsim->hw_scan_request = NULL;
2104 hwsim->hw_scan_vif = NULL;
2105 hwsim->tmp_chan = NULL;
2106 mutex_unlock(&hwsim->mutex);
2107 return;
2108 }
2109
2110 wiphy_dbg(hwsim->hw->wiphy, "hw scan %d MHz\n",
2111 req->channels[hwsim->scan_chan_idx]->center_freq);
2112
2113 hwsim->tmp_chan = req->channels[hwsim->scan_chan_idx];
2114 if (hwsim->tmp_chan->flags & (IEEE80211_CHAN_NO_IR |
2115 IEEE80211_CHAN_RADAR) ||
2116 !req->n_ssids) {
2117 dwell = 120;
2118 } else {
2119 dwell = 30;
2120 /* send probes */
2121 for (i = 0; i < req->n_ssids; i++) {
2122 struct sk_buff *probe;
2123 struct ieee80211_mgmt *mgmt;
2124
2125 probe = ieee80211_probereq_get(hwsim->hw,
2126 hwsim->scan_addr,
2127 req->ssids[i].ssid,
2128 req->ssids[i].ssid_len,
2129 req->ie_len);
2130 if (!probe)
2131 continue;
2132
2133 mgmt = (struct ieee80211_mgmt *) probe->data;
2134 memcpy(mgmt->da, req->bssid, ETH_ALEN);
2135 memcpy(mgmt->bssid, req->bssid, ETH_ALEN);
2136
2137 if (req->ie_len)
2138 skb_put_data(probe, req->ie, req->ie_len);
2139
2140 local_bh_disable();
2141 mac80211_hwsim_tx_frame(hwsim->hw, probe,
2142 hwsim->tmp_chan);
2143 local_bh_enable();
2144 }
2145 }
2146 ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan,
2147 msecs_to_jiffies(dwell));
2148 hwsim->survey_data[hwsim->scan_chan_idx].channel = hwsim->tmp_chan;
2149 hwsim->survey_data[hwsim->scan_chan_idx].start = jiffies;
2150 hwsim->survey_data[hwsim->scan_chan_idx].end =
2151 jiffies + msecs_to_jiffies(dwell);
2152 hwsim->scan_chan_idx++;
2153 mutex_unlock(&hwsim->mutex);
2154 }
2155
2156 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
2157 struct ieee80211_vif *vif,
2158 struct ieee80211_scan_request *hw_req)
2159 {
2160 struct mac80211_hwsim_data *hwsim = hw->priv;
2161 struct cfg80211_scan_request *req = &hw_req->req;
2162
2163 mutex_lock(&hwsim->mutex);
2164 if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
2165 mutex_unlock(&hwsim->mutex);
2166 return -EBUSY;
2167 }
2168 hwsim->hw_scan_request = req;
2169 hwsim->hw_scan_vif = vif;
2170 hwsim->scan_chan_idx = 0;
2171 if (req->flags & NL80211_SCAN_FLAG_RANDOM_ADDR)
2172 get_random_mask_addr(hwsim->scan_addr,
2173 hw_req->req.mac_addr,
2174 hw_req->req.mac_addr_mask);
2175 else
2176 memcpy(hwsim->scan_addr, vif->addr, ETH_ALEN);
2177 memset(hwsim->survey_data, 0, sizeof(hwsim->survey_data));
2178 mutex_unlock(&hwsim->mutex);
2179
2180 wiphy_dbg(hw->wiphy, "hwsim hw_scan request\n");
2181
2182 ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan, 0);
2183
2184 return 0;
2185 }
2186
2187 static void mac80211_hwsim_cancel_hw_scan(struct ieee80211_hw *hw,
2188 struct ieee80211_vif *vif)
2189 {
2190 struct mac80211_hwsim_data *hwsim = hw->priv;
2191 struct cfg80211_scan_info info = {
2192 .aborted = true,
2193 };
2194
2195 wiphy_dbg(hw->wiphy, "hwsim cancel_hw_scan\n");
2196
2197 cancel_delayed_work_sync(&hwsim->hw_scan);
2198
2199 mutex_lock(&hwsim->mutex);
2200 ieee80211_scan_completed(hwsim->hw, &info);
2201 hwsim->tmp_chan = NULL;
2202 hwsim->hw_scan_request = NULL;
2203 hwsim->hw_scan_vif = NULL;
2204 mutex_unlock(&hwsim->mutex);
2205 }
2206
2207 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw,
2208 struct ieee80211_vif *vif,
2209 const u8 *mac_addr)
2210 {
2211 struct mac80211_hwsim_data *hwsim = hw->priv;
2212
2213 mutex_lock(&hwsim->mutex);
2214
2215 if (hwsim->scanning) {
2216 pr_debug("two hwsim sw_scans detected!\n");
2217 goto out;
2218 }
2219
2220 pr_debug("hwsim sw_scan request, prepping stuff\n");
2221
2222 memcpy(hwsim->scan_addr, mac_addr, ETH_ALEN);
2223 hwsim->scanning = true;
2224 memset(hwsim->survey_data, 0, sizeof(hwsim->survey_data));
2225
2226 out:
2227 mutex_unlock(&hwsim->mutex);
2228 }
2229
2230 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw,
2231 struct ieee80211_vif *vif)
2232 {
2233 struct mac80211_hwsim_data *hwsim = hw->priv;
2234
2235 mutex_lock(&hwsim->mutex);
2236
2237 pr_debug("hwsim sw_scan_complete\n");
2238 hwsim->scanning = false;
2239 eth_zero_addr(hwsim->scan_addr);
2240
2241 mutex_unlock(&hwsim->mutex);
2242 }
2243
2244 static void hw_roc_start(struct work_struct *work)
2245 {
2246 struct mac80211_hwsim_data *hwsim =
2247 container_of(work, struct mac80211_hwsim_data, roc_start.work);
2248
2249 mutex_lock(&hwsim->mutex);
2250
2251 wiphy_dbg(hwsim->hw->wiphy, "hwsim ROC begins\n");
2252 hwsim->tmp_chan = hwsim->roc_chan;
2253 ieee80211_ready_on_channel(hwsim->hw);
2254
2255 ieee80211_queue_delayed_work(hwsim->hw, &hwsim->roc_done,
2256 msecs_to_jiffies(hwsim->roc_duration));
2257
2258 mutex_unlock(&hwsim->mutex);
2259 }
2260
2261 static void hw_roc_done(struct work_struct *work)
2262 {
2263 struct mac80211_hwsim_data *hwsim =
2264 container_of(work, struct mac80211_hwsim_data, roc_done.work);
2265
2266 mutex_lock(&hwsim->mutex);
2267 ieee80211_remain_on_channel_expired(hwsim->hw);
2268 hwsim->tmp_chan = NULL;
2269 mutex_unlock(&hwsim->mutex);
2270
2271 wiphy_dbg(hwsim->hw->wiphy, "hwsim ROC expired\n");
2272 }
2273
2274 static int mac80211_hwsim_roc(struct ieee80211_hw *hw,
2275 struct ieee80211_vif *vif,
2276 struct ieee80211_channel *chan,
2277 int duration,
2278 enum ieee80211_roc_type type)
2279 {
2280 struct mac80211_hwsim_data *hwsim = hw->priv;
2281
2282 mutex_lock(&hwsim->mutex);
2283 if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
2284 mutex_unlock(&hwsim->mutex);
2285 return -EBUSY;
2286 }
2287
2288 hwsim->roc_chan = chan;
2289 hwsim->roc_duration = duration;
2290 mutex_unlock(&hwsim->mutex);
2291
2292 wiphy_dbg(hw->wiphy, "hwsim ROC (%d MHz, %d ms)\n",
2293 chan->center_freq, duration);
2294 ieee80211_queue_delayed_work(hw, &hwsim->roc_start, HZ/50);
2295
2296 return 0;
2297 }
2298
2299 static int mac80211_hwsim_croc(struct ieee80211_hw *hw,
2300 struct ieee80211_vif *vif)
2301 {
2302 struct mac80211_hwsim_data *hwsim = hw->priv;
2303
2304 cancel_delayed_work_sync(&hwsim->roc_start);
2305 cancel_delayed_work_sync(&hwsim->roc_done);
2306
2307 mutex_lock(&hwsim->mutex);
2308 hwsim->tmp_chan = NULL;
2309 mutex_unlock(&hwsim->mutex);
2310
2311 wiphy_dbg(hw->wiphy, "hwsim ROC canceled\n");
2312
2313 return 0;
2314 }
2315
2316 static int mac80211_hwsim_add_chanctx(struct ieee80211_hw *hw,
2317 struct ieee80211_chanctx_conf *ctx)
2318 {
2319 hwsim_set_chanctx_magic(ctx);
2320 wiphy_dbg(hw->wiphy,
2321 "add channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2322 ctx->def.chan->center_freq, ctx->def.width,
2323 ctx->def.center_freq1, ctx->def.center_freq2);
2324 return 0;
2325 }
2326
2327 static void mac80211_hwsim_remove_chanctx(struct ieee80211_hw *hw,
2328 struct ieee80211_chanctx_conf *ctx)
2329 {
2330 wiphy_dbg(hw->wiphy,
2331 "remove channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2332 ctx->def.chan->center_freq, ctx->def.width,
2333 ctx->def.center_freq1, ctx->def.center_freq2);
2334 hwsim_check_chanctx_magic(ctx);
2335 hwsim_clear_chanctx_magic(ctx);
2336 }
2337
2338 static void mac80211_hwsim_change_chanctx(struct ieee80211_hw *hw,
2339 struct ieee80211_chanctx_conf *ctx,
2340 u32 changed)
2341 {
2342 hwsim_check_chanctx_magic(ctx);
2343 wiphy_dbg(hw->wiphy,
2344 "change channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2345 ctx->def.chan->center_freq, ctx->def.width,
2346 ctx->def.center_freq1, ctx->def.center_freq2);
2347 }
2348
2349 static int mac80211_hwsim_assign_vif_chanctx(struct ieee80211_hw *hw,
2350 struct ieee80211_vif *vif,
2351 struct ieee80211_chanctx_conf *ctx)
2352 {
2353 hwsim_check_magic(vif);
2354 hwsim_check_chanctx_magic(ctx);
2355
2356 return 0;
2357 }
2358
2359 static void mac80211_hwsim_unassign_vif_chanctx(struct ieee80211_hw *hw,
2360 struct ieee80211_vif *vif,
2361 struct ieee80211_chanctx_conf *ctx)
2362 {
2363 hwsim_check_magic(vif);
2364 hwsim_check_chanctx_magic(ctx);
2365 }
2366
2367 static const char mac80211_hwsim_gstrings_stats[][ETH_GSTRING_LEN] = {
2368 "tx_pkts_nic",
2369 "tx_bytes_nic",
2370 "rx_pkts_nic",
2371 "rx_bytes_nic",
2372 "d_tx_dropped",
2373 "d_tx_failed",
2374 "d_ps_mode",
2375 "d_group",
2376 };
2377
2378 #define MAC80211_HWSIM_SSTATS_LEN ARRAY_SIZE(mac80211_hwsim_gstrings_stats)
2379
2380 static void mac80211_hwsim_get_et_strings(struct ieee80211_hw *hw,
2381 struct ieee80211_vif *vif,
2382 u32 sset, u8 *data)
2383 {
2384 if (sset == ETH_SS_STATS)
2385 memcpy(data, *mac80211_hwsim_gstrings_stats,
2386 sizeof(mac80211_hwsim_gstrings_stats));
2387 }
2388
2389 static int mac80211_hwsim_get_et_sset_count(struct ieee80211_hw *hw,
2390 struct ieee80211_vif *vif, int sset)
2391 {
2392 if (sset == ETH_SS_STATS)
2393 return MAC80211_HWSIM_SSTATS_LEN;
2394 return 0;
2395 }
2396
2397 static void mac80211_hwsim_get_et_stats(struct ieee80211_hw *hw,
2398 struct ieee80211_vif *vif,
2399 struct ethtool_stats *stats, u64 *data)
2400 {
2401 struct mac80211_hwsim_data *ar = hw->priv;
2402 int i = 0;
2403
2404 data[i++] = ar->tx_pkts;
2405 data[i++] = ar->tx_bytes;
2406 data[i++] = ar->rx_pkts;
2407 data[i++] = ar->rx_bytes;
2408 data[i++] = ar->tx_dropped;
2409 data[i++] = ar->tx_failed;
2410 data[i++] = ar->ps;
2411 data[i++] = ar->group;
2412
2413 WARN_ON(i != MAC80211_HWSIM_SSTATS_LEN);
2414 }
2415
2416 #define HWSIM_COMMON_OPS \
2417 .tx = mac80211_hwsim_tx, \
2418 .start = mac80211_hwsim_start, \
2419 .stop = mac80211_hwsim_stop, \
2420 .add_interface = mac80211_hwsim_add_interface, \
2421 .change_interface = mac80211_hwsim_change_interface, \
2422 .remove_interface = mac80211_hwsim_remove_interface, \
2423 .config = mac80211_hwsim_config, \
2424 .configure_filter = mac80211_hwsim_configure_filter, \
2425 .bss_info_changed = mac80211_hwsim_bss_info_changed, \
2426 .sta_add = mac80211_hwsim_sta_add, \
2427 .sta_remove = mac80211_hwsim_sta_remove, \
2428 .sta_notify = mac80211_hwsim_sta_notify, \
2429 .set_tim = mac80211_hwsim_set_tim, \
2430 .conf_tx = mac80211_hwsim_conf_tx, \
2431 .get_survey = mac80211_hwsim_get_survey, \
2432 CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd) \
2433 .ampdu_action = mac80211_hwsim_ampdu_action, \
2434 .flush = mac80211_hwsim_flush, \
2435 .get_tsf = mac80211_hwsim_get_tsf, \
2436 .set_tsf = mac80211_hwsim_set_tsf, \
2437 .get_et_sset_count = mac80211_hwsim_get_et_sset_count, \
2438 .get_et_stats = mac80211_hwsim_get_et_stats, \
2439 .get_et_strings = mac80211_hwsim_get_et_strings,
2440
2441 static const struct ieee80211_ops mac80211_hwsim_ops = {
2442 HWSIM_COMMON_OPS
2443 .sw_scan_start = mac80211_hwsim_sw_scan,
2444 .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
2445 };
2446
2447 static const struct ieee80211_ops mac80211_hwsim_mchan_ops = {
2448 HWSIM_COMMON_OPS
2449 .hw_scan = mac80211_hwsim_hw_scan,
2450 .cancel_hw_scan = mac80211_hwsim_cancel_hw_scan,
2451 .sw_scan_start = NULL,
2452 .sw_scan_complete = NULL,
2453 .remain_on_channel = mac80211_hwsim_roc,
2454 .cancel_remain_on_channel = mac80211_hwsim_croc,
2455 .add_chanctx = mac80211_hwsim_add_chanctx,
2456 .remove_chanctx = mac80211_hwsim_remove_chanctx,
2457 .change_chanctx = mac80211_hwsim_change_chanctx,
2458 .assign_vif_chanctx = mac80211_hwsim_assign_vif_chanctx,
2459 .unassign_vif_chanctx = mac80211_hwsim_unassign_vif_chanctx,
2460 };
2461
2462 struct hwsim_new_radio_params {
2463 unsigned int channels;
2464 const char *reg_alpha2;
2465 const struct ieee80211_regdomain *regd;
2466 bool reg_strict;
2467 bool p2p_device;
2468 bool use_chanctx;
2469 bool destroy_on_close;
2470 const char *hwname;
2471 bool no_vif;
2472 const u8 *perm_addr;
2473 u32 iftypes;
2474 u32 *ciphers;
2475 u8 n_ciphers;
2476 };
2477
2478 static void hwsim_mcast_config_msg(struct sk_buff *mcast_skb,
2479 struct genl_info *info)
2480 {
2481 if (info)
2482 genl_notify(&hwsim_genl_family, mcast_skb, info,
2483 HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2484 else
2485 genlmsg_multicast(&hwsim_genl_family, mcast_skb, 0,
2486 HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2487 }
2488
2489 static int append_radio_msg(struct sk_buff *skb, int id,
2490 struct hwsim_new_radio_params *param)
2491 {
2492 int ret;
2493
2494 ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
2495 if (ret < 0)
2496 return ret;
2497
2498 if (param->channels) {
2499 ret = nla_put_u32(skb, HWSIM_ATTR_CHANNELS, param->channels);
2500 if (ret < 0)
2501 return ret;
2502 }
2503
2504 if (param->reg_alpha2) {
2505 ret = nla_put(skb, HWSIM_ATTR_REG_HINT_ALPHA2, 2,
2506 param->reg_alpha2);
2507 if (ret < 0)
2508 return ret;
2509 }
2510
2511 if (param->regd) {
2512 int i;
2513
2514 for (i = 0; i < ARRAY_SIZE(hwsim_world_regdom_custom); i++) {
2515 if (hwsim_world_regdom_custom[i] != param->regd)
2516 continue;
2517
2518 ret = nla_put_u32(skb, HWSIM_ATTR_REG_CUSTOM_REG, i);
2519 if (ret < 0)
2520 return ret;
2521 break;
2522 }
2523 }
2524
2525 if (param->reg_strict) {
2526 ret = nla_put_flag(skb, HWSIM_ATTR_REG_STRICT_REG);
2527 if (ret < 0)
2528 return ret;
2529 }
2530
2531 if (param->p2p_device) {
2532 ret = nla_put_flag(skb, HWSIM_ATTR_SUPPORT_P2P_DEVICE);
2533 if (ret < 0)
2534 return ret;
2535 }
2536
2537 if (param->use_chanctx) {
2538 ret = nla_put_flag(skb, HWSIM_ATTR_USE_CHANCTX);
2539 if (ret < 0)
2540 return ret;
2541 }
2542
2543 if (param->hwname) {
2544 ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME,
2545 strlen(param->hwname), param->hwname);
2546 if (ret < 0)
2547 return ret;
2548 }
2549
2550 return 0;
2551 }
2552
2553 static void hwsim_mcast_new_radio(int id, struct genl_info *info,
2554 struct hwsim_new_radio_params *param)
2555 {
2556 struct sk_buff *mcast_skb;
2557 void *data;
2558
2559 mcast_skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2560 if (!mcast_skb)
2561 return;
2562
2563 data = genlmsg_put(mcast_skb, 0, 0, &hwsim_genl_family, 0,
2564 HWSIM_CMD_NEW_RADIO);
2565 if (!data)
2566 goto out_err;
2567
2568 if (append_radio_msg(mcast_skb, id, param) < 0)
2569 goto out_err;
2570
2571 genlmsg_end(mcast_skb, data);
2572
2573 hwsim_mcast_config_msg(mcast_skb, info);
2574 return;
2575
2576 out_err:
2577 nlmsg_free(mcast_skb);
2578 }
2579
2580 static const struct ieee80211_sband_iftype_data he_capa_2ghz[] = {
2581 {
2582 /* TODO: should we support other types, e.g., P2P?*/
2583 .types_mask = BIT(NL80211_IFTYPE_STATION) |
2584 BIT(NL80211_IFTYPE_AP),
2585 .he_cap = {
2586 .has_he = true,
2587 .he_cap_elem = {
2588 .mac_cap_info[0] =
2589 IEEE80211_HE_MAC_CAP0_HTC_HE,
2590 .mac_cap_info[1] =
2591 IEEE80211_HE_MAC_CAP1_TF_MAC_PAD_DUR_16US |
2592 IEEE80211_HE_MAC_CAP1_MULTI_TID_AGG_RX_QOS_8,
2593 .mac_cap_info[2] =
2594 IEEE80211_HE_MAC_CAP2_BSR |
2595 IEEE80211_HE_MAC_CAP2_MU_CASCADING |
2596 IEEE80211_HE_MAC_CAP2_ACK_EN,
2597 .mac_cap_info[3] =
2598 IEEE80211_HE_MAC_CAP3_OMI_CONTROL |
2599 IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_VHT_2,
2600 .mac_cap_info[4] = IEEE80211_HE_MAC_CAP4_AMDSU_IN_AMPDU,
2601 .phy_cap_info[1] =
2602 IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK |
2603 IEEE80211_HE_PHY_CAP1_DEVICE_CLASS_A |
2604 IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD |
2605 IEEE80211_HE_PHY_CAP1_MIDAMBLE_RX_TX_MAX_NSTS,
2606 .phy_cap_info[2] =
2607 IEEE80211_HE_PHY_CAP2_NDP_4x_LTF_AND_3_2US |
2608 IEEE80211_HE_PHY_CAP2_STBC_TX_UNDER_80MHZ |
2609 IEEE80211_HE_PHY_CAP2_STBC_RX_UNDER_80MHZ |
2610 IEEE80211_HE_PHY_CAP2_UL_MU_FULL_MU_MIMO |
2611 IEEE80211_HE_PHY_CAP2_UL_MU_PARTIAL_MU_MIMO,
2612
2613 /* Leave all the other PHY capability bytes
2614 * unset, as DCM, beam forming, RU and PPE
2615 * threshold information are not supported
2616 */
2617 },
2618 .he_mcs_nss_supp = {
2619 .rx_mcs_80 = cpu_to_le16(0xfffa),
2620 .tx_mcs_80 = cpu_to_le16(0xfffa),
2621 .rx_mcs_160 = cpu_to_le16(0xffff),
2622 .tx_mcs_160 = cpu_to_le16(0xffff),
2623 .rx_mcs_80p80 = cpu_to_le16(0xffff),
2624 .tx_mcs_80p80 = cpu_to_le16(0xffff),
2625 },
2626 },
2627 },
2628 #ifdef CONFIG_MAC80211_MESH
2629 {
2630 /* TODO: should we support other types, e.g., IBSS?*/
2631 .types_mask = BIT(NL80211_IFTYPE_MESH_POINT),
2632 .he_cap = {
2633 .has_he = true,
2634 .he_cap_elem = {
2635 .mac_cap_info[0] =
2636 IEEE80211_HE_MAC_CAP0_HTC_HE,
2637 .mac_cap_info[1] =
2638 IEEE80211_HE_MAC_CAP1_MULTI_TID_AGG_RX_QOS_8,
2639 .mac_cap_info[2] =
2640 IEEE80211_HE_MAC_CAP2_ACK_EN,
2641 .mac_cap_info[3] =
2642 IEEE80211_HE_MAC_CAP3_OMI_CONTROL |
2643 IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_VHT_2,
2644 .mac_cap_info[4] = IEEE80211_HE_MAC_CAP4_AMDSU_IN_AMPDU,
2645 .phy_cap_info[1] =
2646 IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK |
2647 IEEE80211_HE_PHY_CAP1_DEVICE_CLASS_A |
2648 IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD |
2649 IEEE80211_HE_PHY_CAP1_MIDAMBLE_RX_TX_MAX_NSTS,
2650 .phy_cap_info[2] = 0,
2651
2652 /* Leave all the other PHY capability bytes
2653 * unset, as DCM, beam forming, RU and PPE
2654 * threshold information are not supported
2655 */
2656 },
2657 .he_mcs_nss_supp = {
2658 .rx_mcs_80 = cpu_to_le16(0xfffa),
2659 .tx_mcs_80 = cpu_to_le16(0xfffa),
2660 .rx_mcs_160 = cpu_to_le16(0xffff),
2661 .tx_mcs_160 = cpu_to_le16(0xffff),
2662 .rx_mcs_80p80 = cpu_to_le16(0xffff),
2663 .tx_mcs_80p80 = cpu_to_le16(0xffff),
2664 },
2665 },
2666 },
2667 #endif
2668 };
2669
2670 static const struct ieee80211_sband_iftype_data he_capa_5ghz[] = {
2671 {
2672 /* TODO: should we support other types, e.g., P2P?*/
2673 .types_mask = BIT(NL80211_IFTYPE_STATION) |
2674 BIT(NL80211_IFTYPE_AP),
2675 .he_cap = {
2676 .has_he = true,
2677 .he_cap_elem = {
2678 .mac_cap_info[0] =
2679 IEEE80211_HE_MAC_CAP0_HTC_HE,
2680 .mac_cap_info[1] =
2681 IEEE80211_HE_MAC_CAP1_TF_MAC_PAD_DUR_16US |
2682 IEEE80211_HE_MAC_CAP1_MULTI_TID_AGG_RX_QOS_8,
2683 .mac_cap_info[2] =
2684 IEEE80211_HE_MAC_CAP2_BSR |
2685 IEEE80211_HE_MAC_CAP2_MU_CASCADING |
2686 IEEE80211_HE_MAC_CAP2_ACK_EN,
2687 .mac_cap_info[3] =
2688 IEEE80211_HE_MAC_CAP3_OMI_CONTROL |
2689 IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_VHT_2,
2690 .mac_cap_info[4] = IEEE80211_HE_MAC_CAP4_AMDSU_IN_AMPDU,
2691 .phy_cap_info[0] =
2692 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G |
2693 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G |
2694 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G,
2695 .phy_cap_info[1] =
2696 IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK |
2697 IEEE80211_HE_PHY_CAP1_DEVICE_CLASS_A |
2698 IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD |
2699 IEEE80211_HE_PHY_CAP1_MIDAMBLE_RX_TX_MAX_NSTS,
2700 .phy_cap_info[2] =
2701 IEEE80211_HE_PHY_CAP2_NDP_4x_LTF_AND_3_2US |
2702 IEEE80211_HE_PHY_CAP2_STBC_TX_UNDER_80MHZ |
2703 IEEE80211_HE_PHY_CAP2_STBC_RX_UNDER_80MHZ |
2704 IEEE80211_HE_PHY_CAP2_UL_MU_FULL_MU_MIMO |
2705 IEEE80211_HE_PHY_CAP2_UL_MU_PARTIAL_MU_MIMO,
2706
2707 /* Leave all the other PHY capability bytes
2708 * unset, as DCM, beam forming, RU and PPE
2709 * threshold information are not supported
2710 */
2711 },
2712 .he_mcs_nss_supp = {
2713 .rx_mcs_80 = cpu_to_le16(0xfffa),
2714 .tx_mcs_80 = cpu_to_le16(0xfffa),
2715 .rx_mcs_160 = cpu_to_le16(0xfffa),
2716 .tx_mcs_160 = cpu_to_le16(0xfffa),
2717 .rx_mcs_80p80 = cpu_to_le16(0xfffa),
2718 .tx_mcs_80p80 = cpu_to_le16(0xfffa),
2719 },
2720 },
2721 },
2722 #ifdef CONFIG_MAC80211_MESH
2723 {
2724 /* TODO: should we support other types, e.g., IBSS?*/
2725 .types_mask = BIT(NL80211_IFTYPE_MESH_POINT),
2726 .he_cap = {
2727 .has_he = true,
2728 .he_cap_elem = {
2729 .mac_cap_info[0] =
2730 IEEE80211_HE_MAC_CAP0_HTC_HE,
2731 .mac_cap_info[1] =
2732 IEEE80211_HE_MAC_CAP1_MULTI_TID_AGG_RX_QOS_8,
2733 .mac_cap_info[2] =
2734 IEEE80211_HE_MAC_CAP2_ACK_EN,
2735 .mac_cap_info[3] =
2736 IEEE80211_HE_MAC_CAP3_OMI_CONTROL |
2737 IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_VHT_2,
2738 .mac_cap_info[4] = IEEE80211_HE_MAC_CAP4_AMDSU_IN_AMPDU,
2739 .phy_cap_info[0] =
2740 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G |
2741 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G |
2742 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G,
2743 .phy_cap_info[1] =
2744 IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK |
2745 IEEE80211_HE_PHY_CAP1_DEVICE_CLASS_A |
2746 IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD |
2747 IEEE80211_HE_PHY_CAP1_MIDAMBLE_RX_TX_MAX_NSTS,
2748 .phy_cap_info[2] = 0,
2749
2750 /* Leave all the other PHY capability bytes
2751 * unset, as DCM, beam forming, RU and PPE
2752 * threshold information are not supported
2753 */
2754 },
2755 .he_mcs_nss_supp = {
2756 .rx_mcs_80 = cpu_to_le16(0xfffa),
2757 .tx_mcs_80 = cpu_to_le16(0xfffa),
2758 .rx_mcs_160 = cpu_to_le16(0xfffa),
2759 .tx_mcs_160 = cpu_to_le16(0xfffa),
2760 .rx_mcs_80p80 = cpu_to_le16(0xfffa),
2761 .tx_mcs_80p80 = cpu_to_le16(0xfffa),
2762 },
2763 },
2764 },
2765 #endif
2766 };
2767
2768 static void mac80211_hwsim_he_capab(struct ieee80211_supported_band *sband)
2769 {
2770 u16 n_iftype_data;
2771
2772 if (sband->band == NL80211_BAND_2GHZ) {
2773 n_iftype_data = ARRAY_SIZE(he_capa_2ghz);
2774 sband->iftype_data =
2775 (struct ieee80211_sband_iftype_data *)he_capa_2ghz;
2776 } else if (sband->band == NL80211_BAND_5GHZ) {
2777 n_iftype_data = ARRAY_SIZE(he_capa_5ghz);
2778 sband->iftype_data =
2779 (struct ieee80211_sband_iftype_data *)he_capa_5ghz;
2780 } else {
2781 return;
2782 }
2783
2784 sband->n_iftype_data = n_iftype_data;
2785 }
2786
2787 #ifdef CONFIG_MAC80211_MESH
2788 #define HWSIM_MESH_BIT BIT(NL80211_IFTYPE_MESH_POINT)
2789 #else
2790 #define HWSIM_MESH_BIT 0
2791 #endif
2792
2793 #define HWSIM_DEFAULT_IF_LIMIT \
2794 (BIT(NL80211_IFTYPE_STATION) | \
2795 BIT(NL80211_IFTYPE_P2P_CLIENT) | \
2796 BIT(NL80211_IFTYPE_AP) | \
2797 BIT(NL80211_IFTYPE_P2P_GO) | \
2798 HWSIM_MESH_BIT)
2799
2800 #define HWSIM_IFTYPE_SUPPORT_MASK \
2801 (BIT(NL80211_IFTYPE_STATION) | \
2802 BIT(NL80211_IFTYPE_AP) | \
2803 BIT(NL80211_IFTYPE_P2P_CLIENT) | \
2804 BIT(NL80211_IFTYPE_P2P_GO) | \
2805 BIT(NL80211_IFTYPE_ADHOC) | \
2806 BIT(NL80211_IFTYPE_MESH_POINT) | \
2807 BIT(NL80211_IFTYPE_OCB))
2808
2809 static int mac80211_hwsim_new_radio(struct genl_info *info,
2810 struct hwsim_new_radio_params *param)
2811 {
2812 int err;
2813 u8 addr[ETH_ALEN];
2814 struct mac80211_hwsim_data *data;
2815 struct ieee80211_hw *hw;
2816 enum nl80211_band band;
2817 const struct ieee80211_ops *ops = &mac80211_hwsim_ops;
2818 struct net *net;
2819 int idx, i;
2820 int n_limits = 0;
2821
2822 if (WARN_ON(param->channels > 1 && !param->use_chanctx))
2823 return -EINVAL;
2824
2825 spin_lock_bh(&hwsim_radio_lock);
2826 idx = hwsim_radio_idx++;
2827 spin_unlock_bh(&hwsim_radio_lock);
2828
2829 if (param->use_chanctx)
2830 ops = &mac80211_hwsim_mchan_ops;
2831 hw = ieee80211_alloc_hw_nm(sizeof(*data), ops, param->hwname);
2832 if (!hw) {
2833 pr_debug("mac80211_hwsim: ieee80211_alloc_hw failed\n");
2834 err = -ENOMEM;
2835 goto failed;
2836 }
2837
2838 /* ieee80211_alloc_hw_nm may have used a default name */
2839 param->hwname = wiphy_name(hw->wiphy);
2840
2841 if (info)
2842 net = genl_info_net(info);
2843 else
2844 net = &init_net;
2845 wiphy_net_set(hw->wiphy, net);
2846
2847 data = hw->priv;
2848 data->hw = hw;
2849
2850 data->dev = device_create(hwsim_class, NULL, 0, hw, "hwsim%d", idx);
2851 if (IS_ERR(data->dev)) {
2852 printk(KERN_DEBUG
2853 "mac80211_hwsim: device_create failed (%ld)\n",
2854 PTR_ERR(data->dev));
2855 err = -ENOMEM;
2856 goto failed_drvdata;
2857 }
2858 data->dev->driver = &mac80211_hwsim_driver.driver;
2859 err = device_bind_driver(data->dev);
2860 if (err != 0) {
2861 pr_debug("mac80211_hwsim: device_bind_driver failed (%d)\n",
2862 err);
2863 goto failed_bind;
2864 }
2865
2866 skb_queue_head_init(&data->pending);
2867
2868 SET_IEEE80211_DEV(hw, data->dev);
2869 if (!param->perm_addr) {
2870 eth_zero_addr(addr);
2871 addr[0] = 0x02;
2872 addr[3] = idx >> 8;
2873 addr[4] = idx;
2874 memcpy(data->addresses[0].addr, addr, ETH_ALEN);
2875 /* Why need here second address ? */
2876 memcpy(data->addresses[1].addr, addr, ETH_ALEN);
2877 data->addresses[1].addr[0] |= 0x40;
2878 hw->wiphy->n_addresses = 2;
2879 hw->wiphy->addresses = data->addresses;
2880 /* possible address clash is checked at hash table insertion */
2881 } else {
2882 memcpy(data->addresses[0].addr, param->perm_addr, ETH_ALEN);
2883 /* compatibility with automatically generated mac addr */
2884 memcpy(data->addresses[1].addr, param->perm_addr, ETH_ALEN);
2885 hw->wiphy->n_addresses = 2;
2886 hw->wiphy->addresses = data->addresses;
2887 }
2888
2889 data->channels = param->channels;
2890 data->use_chanctx = param->use_chanctx;
2891 data->idx = idx;
2892 data->destroy_on_close = param->destroy_on_close;
2893 if (info)
2894 data->portid = info->snd_portid;
2895
2896 /* setup interface limits, only on interface types we support */
2897 if (param->iftypes & BIT(NL80211_IFTYPE_ADHOC)) {
2898 data->if_limits[n_limits].max = 1;
2899 data->if_limits[n_limits].types = BIT(NL80211_IFTYPE_ADHOC);
2900 n_limits++;
2901 }
2902
2903 if (param->iftypes & HWSIM_DEFAULT_IF_LIMIT) {
2904 data->if_limits[n_limits].max = 2048;
2905 /*
2906 * For this case, we may only support a subset of
2907 * HWSIM_DEFAULT_IF_LIMIT, therefore we only want to add the
2908 * bits that both param->iftype & HWSIM_DEFAULT_IF_LIMIT have.
2909 */
2910 data->if_limits[n_limits].types =
2911 HWSIM_DEFAULT_IF_LIMIT & param->iftypes;
2912 n_limits++;
2913 }
2914
2915 if (param->iftypes & BIT(NL80211_IFTYPE_P2P_DEVICE)) {
2916 data->if_limits[n_limits].max = 1;
2917 data->if_limits[n_limits].types =
2918 BIT(NL80211_IFTYPE_P2P_DEVICE);
2919 n_limits++;
2920 }
2921
2922 if (data->use_chanctx) {
2923 hw->wiphy->max_scan_ssids = 255;
2924 hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
2925 hw->wiphy->max_remain_on_channel_duration = 1000;
2926 data->if_combination.radar_detect_widths = 0;
2927 data->if_combination.num_different_channels = data->channels;
2928 } else {
2929 data->if_combination.num_different_channels = 1;
2930 data->if_combination.radar_detect_widths =
2931 BIT(NL80211_CHAN_WIDTH_5) |
2932 BIT(NL80211_CHAN_WIDTH_10) |
2933 BIT(NL80211_CHAN_WIDTH_20_NOHT) |
2934 BIT(NL80211_CHAN_WIDTH_20) |
2935 BIT(NL80211_CHAN_WIDTH_40) |
2936 BIT(NL80211_CHAN_WIDTH_80) |
2937 BIT(NL80211_CHAN_WIDTH_160);
2938 }
2939
2940 if (!n_limits) {
2941 err = -EINVAL;
2942 goto failed_hw;
2943 }
2944
2945 data->if_combination.max_interfaces = 0;
2946 for (i = 0; i < n_limits; i++)
2947 data->if_combination.max_interfaces +=
2948 data->if_limits[i].max;
2949
2950 data->if_combination.n_limits = n_limits;
2951 data->if_combination.limits = data->if_limits;
2952
2953 /*
2954 * If we actually were asked to support combinations,
2955 * advertise them - if there's only a single thing like
2956 * only IBSS then don't advertise it as combinations.
2957 */
2958 if (data->if_combination.max_interfaces > 1) {
2959 hw->wiphy->iface_combinations = &data->if_combination;
2960 hw->wiphy->n_iface_combinations = 1;
2961 }
2962
2963 if (param->ciphers) {
2964 memcpy(data->ciphers, param->ciphers,
2965 param->n_ciphers * sizeof(u32));
2966 hw->wiphy->cipher_suites = data->ciphers;
2967 hw->wiphy->n_cipher_suites = param->n_ciphers;
2968 }
2969
2970 INIT_DELAYED_WORK(&data->roc_start, hw_roc_start);
2971 INIT_DELAYED_WORK(&data->roc_done, hw_roc_done);
2972 INIT_DELAYED_WORK(&data->hw_scan, hw_scan_work);
2973
2974 hw->queues = 5;
2975 hw->offchannel_tx_hw_queue = 4;
2976
2977 ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
2978 ieee80211_hw_set(hw, CHANCTX_STA_CSA);
2979 ieee80211_hw_set(hw, SUPPORTS_HT_CCK_RATES);
2980 ieee80211_hw_set(hw, QUEUE_CONTROL);
2981 ieee80211_hw_set(hw, WANT_MONITOR_VIF);
2982 ieee80211_hw_set(hw, AMPDU_AGGREGATION);
2983 ieee80211_hw_set(hw, MFP_CAPABLE);
2984 ieee80211_hw_set(hw, SIGNAL_DBM);
2985 ieee80211_hw_set(hw, SUPPORTS_PS);
2986 ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS);
2987 ieee80211_hw_set(hw, HOST_BROADCAST_PS_BUFFERING);
2988 ieee80211_hw_set(hw, PS_NULLFUNC_STACK);
2989 ieee80211_hw_set(hw, TDLS_WIDER_BW);
2990 if (rctbl)
2991 ieee80211_hw_set(hw, SUPPORTS_RC_TABLE);
2992 ieee80211_hw_set(hw, SUPPORTS_MULTI_BSSID);
2993
2994 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
2995 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS |
2996 WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL |
2997 WIPHY_FLAG_AP_UAPSD |
2998 WIPHY_FLAG_HAS_CHANNEL_SWITCH;
2999 hw->wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR |
3000 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
3001 NL80211_FEATURE_STATIC_SMPS |
3002 NL80211_FEATURE_DYNAMIC_SMPS |
3003 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
3004 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_VHT_IBSS);
3005 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_BEACON_PROTECTION);
3006
3007 hw->wiphy->interface_modes = param->iftypes;
3008
3009 /* ask mac80211 to reserve space for magic */
3010 hw->vif_data_size = sizeof(struct hwsim_vif_priv);
3011 hw->sta_data_size = sizeof(struct hwsim_sta_priv);
3012 hw->chanctx_data_size = sizeof(struct hwsim_chanctx_priv);
3013
3014 memcpy(data->channels_2ghz, hwsim_channels_2ghz,
3015 sizeof(hwsim_channels_2ghz));
3016 memcpy(data->channels_5ghz, hwsim_channels_5ghz,
3017 sizeof(hwsim_channels_5ghz));
3018 memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
3019
3020 for (band = NL80211_BAND_2GHZ; band < NUM_NL80211_BANDS; band++) {
3021 struct ieee80211_supported_band *sband = &data->bands[band];
3022
3023 sband->band = band;
3024
3025 switch (band) {
3026 case NL80211_BAND_2GHZ:
3027 sband->channels = data->channels_2ghz;
3028 sband->n_channels = ARRAY_SIZE(hwsim_channels_2ghz);
3029 sband->bitrates = data->rates;
3030 sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
3031 break;
3032 case NL80211_BAND_5GHZ:
3033 sband->channels = data->channels_5ghz;
3034 sband->n_channels = ARRAY_SIZE(hwsim_channels_5ghz);
3035 sband->bitrates = data->rates + 4;
3036 sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
3037
3038 sband->vht_cap.vht_supported = true;
3039 sband->vht_cap.cap =
3040 IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 |
3041 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ |
3042 IEEE80211_VHT_CAP_RXLDPC |
3043 IEEE80211_VHT_CAP_SHORT_GI_80 |
3044 IEEE80211_VHT_CAP_SHORT_GI_160 |
3045 IEEE80211_VHT_CAP_TXSTBC |
3046 IEEE80211_VHT_CAP_RXSTBC_4 |
3047 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
3048 sband->vht_cap.vht_mcs.rx_mcs_map =
3049 cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_9 << 0 |
3050 IEEE80211_VHT_MCS_SUPPORT_0_9 << 2 |
3051 IEEE80211_VHT_MCS_SUPPORT_0_9 << 4 |
3052 IEEE80211_VHT_MCS_SUPPORT_0_9 << 6 |
3053 IEEE80211_VHT_MCS_SUPPORT_0_9 << 8 |
3054 IEEE80211_VHT_MCS_SUPPORT_0_9 << 10 |
3055 IEEE80211_VHT_MCS_SUPPORT_0_9 << 12 |
3056 IEEE80211_VHT_MCS_SUPPORT_0_9 << 14);
3057 sband->vht_cap.vht_mcs.tx_mcs_map =
3058 sband->vht_cap.vht_mcs.rx_mcs_map;
3059 break;
3060 default:
3061 continue;
3062 }
3063
3064 sband->ht_cap.ht_supported = true;
3065 sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
3066 IEEE80211_HT_CAP_GRN_FLD |
3067 IEEE80211_HT_CAP_SGI_20 |
3068 IEEE80211_HT_CAP_SGI_40 |
3069 IEEE80211_HT_CAP_DSSSCCK40;
3070 sband->ht_cap.ampdu_factor = 0x3;
3071 sband->ht_cap.ampdu_density = 0x6;
3072 memset(&sband->ht_cap.mcs, 0,
3073 sizeof(sband->ht_cap.mcs));
3074 sband->ht_cap.mcs.rx_mask[0] = 0xff;
3075 sband->ht_cap.mcs.rx_mask[1] = 0xff;
3076 sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
3077
3078 mac80211_hwsim_he_capab(sband);
3079
3080 hw->wiphy->bands[band] = sband;
3081 }
3082
3083 /* By default all radios belong to the first group */
3084 data->group = 1;
3085 mutex_init(&data->mutex);
3086
3087 data->netgroup = hwsim_net_get_netgroup(net);
3088 data->wmediumd = hwsim_net_get_wmediumd(net);
3089
3090 /* Enable frame retransmissions for lossy channels */
3091 hw->max_rates = 4;
3092 hw->max_rate_tries = 11;
3093
3094 hw->wiphy->vendor_commands = mac80211_hwsim_vendor_commands;
3095 hw->wiphy->n_vendor_commands =
3096 ARRAY_SIZE(mac80211_hwsim_vendor_commands);
3097 hw->wiphy->vendor_events = mac80211_hwsim_vendor_events;
3098 hw->wiphy->n_vendor_events = ARRAY_SIZE(mac80211_hwsim_vendor_events);
3099
3100 if (param->reg_strict)
3101 hw->wiphy->regulatory_flags |= REGULATORY_STRICT_REG;
3102 if (param->regd) {
3103 data->regd = param->regd;
3104 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG;
3105 wiphy_apply_custom_regulatory(hw->wiphy, param->regd);
3106 /* give the regulatory workqueue a chance to run */
3107 schedule_timeout_interruptible(1);
3108 }
3109
3110 if (param->no_vif)
3111 ieee80211_hw_set(hw, NO_AUTO_VIF);
3112
3113 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST);
3114
3115 hrtimer_init(&data->beacon_timer, CLOCK_MONOTONIC,
3116 HRTIMER_MODE_ABS_SOFT);
3117 data->beacon_timer.function = mac80211_hwsim_beacon;
3118
3119 err = ieee80211_register_hw(hw);
3120 if (err < 0) {
3121 pr_debug("mac80211_hwsim: ieee80211_register_hw failed (%d)\n",
3122 err);
3123 goto failed_hw;
3124 }
3125
3126 wiphy_dbg(hw->wiphy, "hwaddr %pM registered\n", hw->wiphy->perm_addr);
3127
3128 if (param->reg_alpha2) {
3129 data->alpha2[0] = param->reg_alpha2[0];
3130 data->alpha2[1] = param->reg_alpha2[1];
3131 regulatory_hint(hw->wiphy, param->reg_alpha2);
3132 }
3133
3134 data->debugfs = debugfs_create_dir("hwsim", hw->wiphy->debugfsdir);
3135 debugfs_create_file("ps", 0666, data->debugfs, data, &hwsim_fops_ps);
3136 debugfs_create_file("group", 0666, data->debugfs, data,
3137 &hwsim_fops_group);
3138 if (!data->use_chanctx)
3139 debugfs_create_file("dfs_simulate_radar", 0222,
3140 data->debugfs,
3141 data, &hwsim_simulate_radar);
3142
3143 spin_lock_bh(&hwsim_radio_lock);
3144 err = rhashtable_insert_fast(&hwsim_radios_rht, &data->rht,
3145 hwsim_rht_params);
3146 if (err < 0) {
3147 if (info) {
3148 GENL_SET_ERR_MSG(info, "perm addr already present");
3149 NL_SET_BAD_ATTR(info->extack,
3150 info->attrs[HWSIM_ATTR_PERM_ADDR]);
3151 }
3152 spin_unlock_bh(&hwsim_radio_lock);
3153 goto failed_final_insert;
3154 }
3155
3156 list_add_tail(&data->list, &hwsim_radios);
3157 hwsim_radios_generation++;
3158 spin_unlock_bh(&hwsim_radio_lock);
3159
3160 hwsim_mcast_new_radio(idx, info, param);
3161
3162 return idx;
3163
3164 failed_final_insert:
3165 debugfs_remove_recursive(data->debugfs);
3166 ieee80211_unregister_hw(data->hw);
3167 failed_hw:
3168 device_release_driver(data->dev);
3169 failed_bind:
3170 device_unregister(data->dev);
3171 failed_drvdata:
3172 ieee80211_free_hw(hw);
3173 failed:
3174 return err;
3175 }
3176
3177 static void hwsim_mcast_del_radio(int id, const char *hwname,
3178 struct genl_info *info)
3179 {
3180 struct sk_buff *skb;
3181 void *data;
3182 int ret;
3183
3184 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
3185 if (!skb)
3186 return;
3187
3188 data = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
3189 HWSIM_CMD_DEL_RADIO);
3190 if (!data)
3191 goto error;
3192
3193 ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
3194 if (ret < 0)
3195 goto error;
3196
3197 ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME, strlen(hwname),
3198 hwname);
3199 if (ret < 0)
3200 goto error;
3201
3202 genlmsg_end(skb, data);
3203
3204 hwsim_mcast_config_msg(skb, info);
3205
3206 return;
3207
3208 error:
3209 nlmsg_free(skb);
3210 }
3211
3212 static void mac80211_hwsim_del_radio(struct mac80211_hwsim_data *data,
3213 const char *hwname,
3214 struct genl_info *info)
3215 {
3216 hwsim_mcast_del_radio(data->idx, hwname, info);
3217 debugfs_remove_recursive(data->debugfs);
3218 ieee80211_unregister_hw(data->hw);
3219 device_release_driver(data->dev);
3220 device_unregister(data->dev);
3221 ieee80211_free_hw(data->hw);
3222 }
3223
3224 static int mac80211_hwsim_get_radio(struct sk_buff *skb,
3225 struct mac80211_hwsim_data *data,
3226 u32 portid, u32 seq,
3227 struct netlink_callback *cb, int flags)
3228 {
3229 void *hdr;
3230 struct hwsim_new_radio_params param = { };
3231 int res = -EMSGSIZE;
3232
3233 hdr = genlmsg_put(skb, portid, seq, &hwsim_genl_family, flags,
3234 HWSIM_CMD_GET_RADIO);
3235 if (!hdr)
3236 return -EMSGSIZE;
3237
3238 if (cb)
3239 genl_dump_check_consistent(cb, hdr);
3240
3241 if (data->alpha2[0] && data->alpha2[1])
3242 param.reg_alpha2 = data->alpha2;
3243
3244 param.reg_strict = !!(data->hw->wiphy->regulatory_flags &
3245 REGULATORY_STRICT_REG);
3246 param.p2p_device = !!(data->hw->wiphy->interface_modes &
3247 BIT(NL80211_IFTYPE_P2P_DEVICE));
3248 param.use_chanctx = data->use_chanctx;
3249 param.regd = data->regd;
3250 param.channels = data->channels;
3251 param.hwname = wiphy_name(data->hw->wiphy);
3252
3253 res = append_radio_msg(skb, data->idx, &param);
3254 if (res < 0)
3255 goto out_err;
3256
3257 genlmsg_end(skb, hdr);
3258 return 0;
3259
3260 out_err:
3261 genlmsg_cancel(skb, hdr);
3262 return res;
3263 }
3264
3265 static void mac80211_hwsim_free(void)
3266 {
3267 struct mac80211_hwsim_data *data;
3268
3269 spin_lock_bh(&hwsim_radio_lock);
3270 while ((data = list_first_entry_or_null(&hwsim_radios,
3271 struct mac80211_hwsim_data,
3272 list))) {
3273 list_del(&data->list);
3274 spin_unlock_bh(&hwsim_radio_lock);
3275 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
3276 NULL);
3277 spin_lock_bh(&hwsim_radio_lock);
3278 }
3279 spin_unlock_bh(&hwsim_radio_lock);
3280 class_destroy(hwsim_class);
3281 }
3282
3283 static const struct net_device_ops hwsim_netdev_ops = {
3284 .ndo_start_xmit = hwsim_mon_xmit,
3285 .ndo_set_mac_address = eth_mac_addr,
3286 .ndo_validate_addr = eth_validate_addr,
3287 };
3288
3289 static void hwsim_mon_setup(struct net_device *dev)
3290 {
3291 dev->netdev_ops = &hwsim_netdev_ops;
3292 dev->needs_free_netdev = true;
3293 ether_setup(dev);
3294 dev->priv_flags |= IFF_NO_QUEUE;
3295 dev->type = ARPHRD_IEEE80211_RADIOTAP;
3296 eth_zero_addr(dev->dev_addr);
3297 dev->dev_addr[0] = 0x12;
3298 }
3299
3300 static struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(const u8 *addr)
3301 {
3302 return rhashtable_lookup_fast(&hwsim_radios_rht,
3303 addr,
3304 hwsim_rht_params);
3305 }
3306
3307 static void hwsim_register_wmediumd(struct net *net, u32 portid)
3308 {
3309 struct mac80211_hwsim_data *data;
3310
3311 hwsim_net_set_wmediumd(net, portid);
3312
3313 spin_lock_bh(&hwsim_radio_lock);
3314 list_for_each_entry(data, &hwsim_radios, list) {
3315 if (data->netgroup == hwsim_net_get_netgroup(net))
3316 data->wmediumd = portid;
3317 }
3318 spin_unlock_bh(&hwsim_radio_lock);
3319 }
3320
3321 static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
3322 struct genl_info *info)
3323 {
3324
3325 struct ieee80211_hdr *hdr;
3326 struct mac80211_hwsim_data *data2;
3327 struct ieee80211_tx_info *txi;
3328 struct hwsim_tx_rate *tx_attempts;
3329 u64 ret_skb_cookie;
3330 struct sk_buff *skb, *tmp;
3331 const u8 *src;
3332 unsigned int hwsim_flags;
3333 int i;
3334 bool found = false;
3335
3336 if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
3337 !info->attrs[HWSIM_ATTR_FLAGS] ||
3338 !info->attrs[HWSIM_ATTR_COOKIE] ||
3339 !info->attrs[HWSIM_ATTR_SIGNAL] ||
3340 !info->attrs[HWSIM_ATTR_TX_INFO])
3341 goto out;
3342
3343 src = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
3344 hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
3345 ret_skb_cookie = nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
3346
3347 data2 = get_hwsim_data_ref_from_addr(src);
3348 if (!data2)
3349 goto out;
3350
3351 if (!hwsim_virtio_enabled) {
3352 if (hwsim_net_get_netgroup(genl_info_net(info)) !=
3353 data2->netgroup)
3354 goto out;
3355
3356 if (info->snd_portid != data2->wmediumd)
3357 goto out;
3358 }
3359
3360 /* look for the skb matching the cookie passed back from user */
3361 skb_queue_walk_safe(&data2->pending, skb, tmp) {
3362 u64 skb_cookie;
3363
3364 txi = IEEE80211_SKB_CB(skb);
3365 skb_cookie = (u64)(uintptr_t)txi->rate_driver_data[0];
3366
3367 if (skb_cookie == ret_skb_cookie) {
3368 skb_unlink(skb, &data2->pending);
3369 found = true;
3370 break;
3371 }
3372 }
3373
3374 /* not found */
3375 if (!found)
3376 goto out;
3377
3378 /* Tx info received because the frame was broadcasted on user space,
3379 so we get all the necessary info: tx attempts and skb control buff */
3380
3381 tx_attempts = (struct hwsim_tx_rate *)nla_data(
3382 info->attrs[HWSIM_ATTR_TX_INFO]);
3383
3384 /* now send back TX status */
3385 txi = IEEE80211_SKB_CB(skb);
3386
3387 ieee80211_tx_info_clear_status(txi);
3388
3389 for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
3390 txi->status.rates[i].idx = tx_attempts[i].idx;
3391 txi->status.rates[i].count = tx_attempts[i].count;
3392 }
3393
3394 txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
3395
3396 if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
3397 (hwsim_flags & HWSIM_TX_STAT_ACK)) {
3398 if (skb->len >= 16) {
3399 hdr = (struct ieee80211_hdr *) skb->data;
3400 mac80211_hwsim_monitor_ack(data2->channel,
3401 hdr->addr2);
3402 }
3403 txi->flags |= IEEE80211_TX_STAT_ACK;
3404 }
3405 ieee80211_tx_status_irqsafe(data2->hw, skb);
3406 return 0;
3407 out:
3408 return -EINVAL;
3409
3410 }
3411
3412 static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
3413 struct genl_info *info)
3414 {
3415 struct mac80211_hwsim_data *data2;
3416 struct ieee80211_rx_status rx_status;
3417 struct ieee80211_hdr *hdr;
3418 const u8 *dst;
3419 int frame_data_len;
3420 void *frame_data;
3421 struct sk_buff *skb = NULL;
3422
3423 if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
3424 !info->attrs[HWSIM_ATTR_FRAME] ||
3425 !info->attrs[HWSIM_ATTR_RX_RATE] ||
3426 !info->attrs[HWSIM_ATTR_SIGNAL])
3427 goto out;
3428
3429 dst = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
3430 frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
3431 frame_data = (void *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
3432
3433 /* Allocate new skb here */
3434 skb = alloc_skb(frame_data_len, GFP_KERNEL);
3435 if (skb == NULL)
3436 goto err;
3437
3438 if (frame_data_len > IEEE80211_MAX_DATA_LEN)
3439 goto err;
3440
3441 /* Copy the data */
3442 skb_put_data(skb, frame_data, frame_data_len);
3443
3444 data2 = get_hwsim_data_ref_from_addr(dst);
3445 if (!data2)
3446 goto out;
3447
3448 if (!hwsim_virtio_enabled) {
3449 if (hwsim_net_get_netgroup(genl_info_net(info)) !=
3450 data2->netgroup)
3451 goto out;
3452
3453 if (info->snd_portid != data2->wmediumd)
3454 goto out;
3455 }
3456
3457 /* check if radio is configured properly */
3458
3459 if (data2->idle || !data2->started)
3460 goto out;
3461
3462 /* A frame is received from user space */
3463 memset(&rx_status, 0, sizeof(rx_status));
3464 if (info->attrs[HWSIM_ATTR_FREQ]) {
3465 /* throw away off-channel packets, but allow both the temporary
3466 * ("hw" scan/remain-on-channel) and regular channel, since the
3467 * internal datapath also allows this
3468 */
3469 mutex_lock(&data2->mutex);
3470 rx_status.freq = nla_get_u32(info->attrs[HWSIM_ATTR_FREQ]);
3471
3472 if (rx_status.freq != data2->channel->center_freq &&
3473 (!data2->tmp_chan ||
3474 rx_status.freq != data2->tmp_chan->center_freq)) {
3475 mutex_unlock(&data2->mutex);
3476 goto out;
3477 }
3478 mutex_unlock(&data2->mutex);
3479 } else {
3480 rx_status.freq = data2->channel->center_freq;
3481 }
3482
3483 rx_status.band = data2->channel->band;
3484 rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
3485 rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
3486
3487 hdr = (void *)skb->data;
3488
3489 if (ieee80211_is_beacon(hdr->frame_control) ||
3490 ieee80211_is_probe_resp(hdr->frame_control))
3491 rx_status.boottime_ns = ktime_get_boottime_ns();
3492
3493 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
3494 data2->rx_pkts++;
3495 data2->rx_bytes += skb->len;
3496 ieee80211_rx_irqsafe(data2->hw, skb);
3497
3498 return 0;
3499 err:
3500 pr_debug("mac80211_hwsim: error occurred in %s\n", __func__);
3501 out:
3502 dev_kfree_skb(skb);
3503 return -EINVAL;
3504 }
3505
3506 static int hwsim_register_received_nl(struct sk_buff *skb_2,
3507 struct genl_info *info)
3508 {
3509 struct net *net = genl_info_net(info);
3510 struct mac80211_hwsim_data *data;
3511 int chans = 1;
3512
3513 spin_lock_bh(&hwsim_radio_lock);
3514 list_for_each_entry(data, &hwsim_radios, list)
3515 chans = max(chans, data->channels);
3516 spin_unlock_bh(&hwsim_radio_lock);
3517
3518 /* In the future we should revise the userspace API and allow it
3519 * to set a flag that it does support multi-channel, then we can
3520 * let this pass conditionally on the flag.
3521 * For current userspace, prohibit it since it won't work right.
3522 */
3523 if (chans > 1)
3524 return -EOPNOTSUPP;
3525
3526 if (hwsim_net_get_wmediumd(net))
3527 return -EBUSY;
3528
3529 hwsim_register_wmediumd(net, info->snd_portid);
3530
3531 pr_debug("mac80211_hwsim: received a REGISTER, "
3532 "switching to wmediumd mode with pid %d\n", info->snd_portid);
3533
3534 return 0;
3535 }
3536
3537 /* ensures ciphers only include ciphers listed in 'hwsim_ciphers' array */
3538 static bool hwsim_known_ciphers(const u32 *ciphers, int n_ciphers)
3539 {
3540 int i;
3541
3542 for (i = 0; i < n_ciphers; i++) {
3543 int j;
3544 int found = 0;
3545
3546 for (j = 0; j < ARRAY_SIZE(hwsim_ciphers); j++) {
3547 if (ciphers[i] == hwsim_ciphers[j]) {
3548 found = 1;
3549 break;
3550 }
3551 }
3552
3553 if (!found)
3554 return false;
3555 }
3556
3557 return true;
3558 }
3559
3560 static int hwsim_new_radio_nl(struct sk_buff *msg, struct genl_info *info)
3561 {
3562 struct hwsim_new_radio_params param = { 0 };
3563 const char *hwname = NULL;
3564 int ret;
3565
3566 param.reg_strict = info->attrs[HWSIM_ATTR_REG_STRICT_REG];
3567 param.p2p_device = info->attrs[HWSIM_ATTR_SUPPORT_P2P_DEVICE];
3568 param.channels = channels;
3569 param.destroy_on_close =
3570 info->attrs[HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE];
3571
3572 if (info->attrs[HWSIM_ATTR_CHANNELS])
3573 param.channels = nla_get_u32(info->attrs[HWSIM_ATTR_CHANNELS]);
3574
3575 if (param.channels < 1) {
3576 GENL_SET_ERR_MSG(info, "must have at least one channel");
3577 return -EINVAL;
3578 }
3579
3580 if (param.channels > CFG80211_MAX_NUM_DIFFERENT_CHANNELS) {
3581 GENL_SET_ERR_MSG(info, "too many channels specified");
3582 return -EINVAL;
3583 }
3584
3585 if (info->attrs[HWSIM_ATTR_NO_VIF])
3586 param.no_vif = true;
3587
3588 if (info->attrs[HWSIM_ATTR_USE_CHANCTX])
3589 param.use_chanctx = true;
3590 else
3591 param.use_chanctx = (param.channels > 1);
3592
3593 if (info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2])
3594 param.reg_alpha2 =
3595 nla_data(info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2]);
3596
3597 if (info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]) {
3598 u32 idx = nla_get_u32(info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]);
3599
3600 if (idx >= ARRAY_SIZE(hwsim_world_regdom_custom))
3601 return -EINVAL;
3602
3603 idx = array_index_nospec(idx,
3604 ARRAY_SIZE(hwsim_world_regdom_custom));
3605 param.regd = hwsim_world_regdom_custom[idx];
3606 }
3607
3608 if (info->attrs[HWSIM_ATTR_PERM_ADDR]) {
3609 if (!is_valid_ether_addr(
3610 nla_data(info->attrs[HWSIM_ATTR_PERM_ADDR]))) {
3611 GENL_SET_ERR_MSG(info,"MAC is no valid source addr");
3612 NL_SET_BAD_ATTR(info->extack,
3613 info->attrs[HWSIM_ATTR_PERM_ADDR]);
3614 return -EINVAL;
3615 }
3616
3617 param.perm_addr = nla_data(info->attrs[HWSIM_ATTR_PERM_ADDR]);
3618 }
3619
3620 if (info->attrs[HWSIM_ATTR_IFTYPE_SUPPORT]) {
3621 param.iftypes =
3622 nla_get_u32(info->attrs[HWSIM_ATTR_IFTYPE_SUPPORT]);
3623
3624 if (param.iftypes & ~HWSIM_IFTYPE_SUPPORT_MASK) {
3625 NL_SET_ERR_MSG_ATTR(info->extack,
3626 info->attrs[HWSIM_ATTR_IFTYPE_SUPPORT],
3627 "cannot support more iftypes than kernel");
3628 return -EINVAL;
3629 }
3630 } else {
3631 param.iftypes = HWSIM_IFTYPE_SUPPORT_MASK;
3632 }
3633
3634 /* ensure both flag and iftype support is honored */
3635 if (param.p2p_device ||
3636 param.iftypes & BIT(NL80211_IFTYPE_P2P_DEVICE)) {
3637 param.iftypes |= BIT(NL80211_IFTYPE_P2P_DEVICE);
3638 param.p2p_device = true;
3639 }
3640
3641 if (info->attrs[HWSIM_ATTR_CIPHER_SUPPORT]) {
3642 u32 len = nla_len(info->attrs[HWSIM_ATTR_CIPHER_SUPPORT]);
3643
3644 param.ciphers =
3645 nla_data(info->attrs[HWSIM_ATTR_CIPHER_SUPPORT]);
3646
3647 if (len % sizeof(u32)) {
3648 NL_SET_ERR_MSG_ATTR(info->extack,
3649 info->attrs[HWSIM_ATTR_CIPHER_SUPPORT],
3650 "bad cipher list length");
3651 return -EINVAL;
3652 }
3653
3654 param.n_ciphers = len / sizeof(u32);
3655
3656 if (param.n_ciphers > ARRAY_SIZE(hwsim_ciphers)) {
3657 NL_SET_ERR_MSG_ATTR(info->extack,
3658 info->attrs[HWSIM_ATTR_CIPHER_SUPPORT],
3659 "too many ciphers specified");
3660 return -EINVAL;
3661 }
3662
3663 if (!hwsim_known_ciphers(param.ciphers, param.n_ciphers)) {
3664 NL_SET_ERR_MSG_ATTR(info->extack,
3665 info->attrs[HWSIM_ATTR_CIPHER_SUPPORT],
3666 "unsupported ciphers specified");
3667 return -EINVAL;
3668 }
3669 }
3670
3671 if (info->attrs[HWSIM_ATTR_RADIO_NAME]) {
3672 hwname = kstrndup((char *)nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]),
3673 nla_len(info->attrs[HWSIM_ATTR_RADIO_NAME]),
3674 GFP_KERNEL);
3675 if (!hwname)
3676 return -ENOMEM;
3677 param.hwname = hwname;
3678 }
3679
3680 ret = mac80211_hwsim_new_radio(info, &param);
3681 kfree(hwname);
3682 return ret;
3683 }
3684
3685 static int hwsim_del_radio_nl(struct sk_buff *msg, struct genl_info *info)
3686 {
3687 struct mac80211_hwsim_data *data;
3688 s64 idx = -1;
3689 const char *hwname = NULL;
3690
3691 if (info->attrs[HWSIM_ATTR_RADIO_ID]) {
3692 idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
3693 } else if (info->attrs[HWSIM_ATTR_RADIO_NAME]) {
3694 hwname = kstrndup((char *)nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]),
3695 nla_len(info->attrs[HWSIM_ATTR_RADIO_NAME]),
3696 GFP_KERNEL);
3697 if (!hwname)
3698 return -ENOMEM;
3699 } else
3700 return -EINVAL;
3701
3702 spin_lock_bh(&hwsim_radio_lock);
3703 list_for_each_entry(data, &hwsim_radios, list) {
3704 if (idx >= 0) {
3705 if (data->idx != idx)
3706 continue;
3707 } else {
3708 if (!hwname ||
3709 strcmp(hwname, wiphy_name(data->hw->wiphy)))
3710 continue;
3711 }
3712
3713 if (!net_eq(wiphy_net(data->hw->wiphy), genl_info_net(info)))
3714 continue;
3715
3716 list_del(&data->list);
3717 rhashtable_remove_fast(&hwsim_radios_rht, &data->rht,
3718 hwsim_rht_params);
3719 hwsim_radios_generation++;
3720 spin_unlock_bh(&hwsim_radio_lock);
3721 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
3722 info);
3723 kfree(hwname);
3724 return 0;
3725 }
3726 spin_unlock_bh(&hwsim_radio_lock);
3727
3728 kfree(hwname);
3729 return -ENODEV;
3730 }
3731
3732 static int hwsim_get_radio_nl(struct sk_buff *msg, struct genl_info *info)
3733 {
3734 struct mac80211_hwsim_data *data;
3735 struct sk_buff *skb;
3736 int idx, res = -ENODEV;
3737
3738 if (!info->attrs[HWSIM_ATTR_RADIO_ID])
3739 return -EINVAL;
3740 idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
3741
3742 spin_lock_bh(&hwsim_radio_lock);
3743 list_for_each_entry(data, &hwsim_radios, list) {
3744 if (data->idx != idx)
3745 continue;
3746
3747 if (!net_eq(wiphy_net(data->hw->wiphy), genl_info_net(info)))
3748 continue;
3749
3750 skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
3751 if (!skb) {
3752 res = -ENOMEM;
3753 goto out_err;
3754 }
3755
3756 res = mac80211_hwsim_get_radio(skb, data, info->snd_portid,
3757 info->snd_seq, NULL, 0);
3758 if (res < 0) {
3759 nlmsg_free(skb);
3760 goto out_err;
3761 }
3762
3763 res = genlmsg_reply(skb, info);
3764 break;
3765 }
3766
3767 out_err:
3768 spin_unlock_bh(&hwsim_radio_lock);
3769
3770 return res;
3771 }
3772
3773 static int hwsim_dump_radio_nl(struct sk_buff *skb,
3774 struct netlink_callback *cb)
3775 {
3776 int last_idx = cb->args[0] - 1;
3777 struct mac80211_hwsim_data *data = NULL;
3778 int res = 0;
3779 void *hdr;
3780
3781 spin_lock_bh(&hwsim_radio_lock);
3782 cb->seq = hwsim_radios_generation;
3783
3784 if (last_idx >= hwsim_radio_idx-1)
3785 goto done;
3786
3787 list_for_each_entry(data, &hwsim_radios, list) {
3788 if (data->idx <= last_idx)
3789 continue;
3790
3791 if (!net_eq(wiphy_net(data->hw->wiphy), sock_net(skb->sk)))
3792 continue;
3793
3794 res = mac80211_hwsim_get_radio(skb, data,
3795 NETLINK_CB(cb->skb).portid,
3796 cb->nlh->nlmsg_seq, cb,
3797 NLM_F_MULTI);
3798 if (res < 0)
3799 break;
3800
3801 last_idx = data->idx;
3802 }
3803
3804 cb->args[0] = last_idx + 1;
3805
3806 /* list changed, but no new element sent, set interrupted flag */
3807 if (skb->len == 0 && cb->prev_seq && cb->seq != cb->prev_seq) {
3808 hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid,
3809 cb->nlh->nlmsg_seq, &hwsim_genl_family,
3810 NLM_F_MULTI, HWSIM_CMD_GET_RADIO);
3811 if (hdr) {
3812 genl_dump_check_consistent(cb, hdr);
3813 genlmsg_end(skb, hdr);
3814 } else {
3815 res = -EMSGSIZE;
3816 }
3817 }
3818
3819 done:
3820 spin_unlock_bh(&hwsim_radio_lock);
3821 return res ?: skb->len;
3822 }
3823
3824 /* Generic Netlink operations array */
3825 static const struct genl_ops hwsim_ops[] = {
3826 {
3827 .cmd = HWSIM_CMD_REGISTER,
3828 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
3829 .doit = hwsim_register_received_nl,
3830 .flags = GENL_UNS_ADMIN_PERM,
3831 },
3832 {
3833 .cmd = HWSIM_CMD_FRAME,
3834 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
3835 .doit = hwsim_cloned_frame_received_nl,
3836 },
3837 {
3838 .cmd = HWSIM_CMD_TX_INFO_FRAME,
3839 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
3840 .doit = hwsim_tx_info_frame_received_nl,
3841 },
3842 {
3843 .cmd = HWSIM_CMD_NEW_RADIO,
3844 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
3845 .doit = hwsim_new_radio_nl,
3846 .flags = GENL_UNS_ADMIN_PERM,
3847 },
3848 {
3849 .cmd = HWSIM_CMD_DEL_RADIO,
3850 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
3851 .doit = hwsim_del_radio_nl,
3852 .flags = GENL_UNS_ADMIN_PERM,
3853 },
3854 {
3855 .cmd = HWSIM_CMD_GET_RADIO,
3856 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
3857 .doit = hwsim_get_radio_nl,
3858 .dumpit = hwsim_dump_radio_nl,
3859 },
3860 };
3861
3862 static struct genl_family hwsim_genl_family __ro_after_init = {
3863 .name = "MAC80211_HWSIM",
3864 .version = 1,
3865 .maxattr = HWSIM_ATTR_MAX,
3866 .policy = hwsim_genl_policy,
3867 .netnsok = true,
3868 .module = THIS_MODULE,
3869 .ops = hwsim_ops,
3870 .n_ops = ARRAY_SIZE(hwsim_ops),
3871 .mcgrps = hwsim_mcgrps,
3872 .n_mcgrps = ARRAY_SIZE(hwsim_mcgrps),
3873 };
3874
3875 static void remove_user_radios(u32 portid)
3876 {
3877 struct mac80211_hwsim_data *entry, *tmp;
3878 LIST_HEAD(list);
3879
3880 spin_lock_bh(&hwsim_radio_lock);
3881 list_for_each_entry_safe(entry, tmp, &hwsim_radios, list) {
3882 if (entry->destroy_on_close && entry->portid == portid) {
3883 list_move(&entry->list, &list);
3884 rhashtable_remove_fast(&hwsim_radios_rht, &entry->rht,
3885 hwsim_rht_params);
3886 hwsim_radios_generation++;
3887 }
3888 }
3889 spin_unlock_bh(&hwsim_radio_lock);
3890
3891 list_for_each_entry_safe(entry, tmp, &list, list) {
3892 list_del(&entry->list);
3893 mac80211_hwsim_del_radio(entry, wiphy_name(entry->hw->wiphy),
3894 NULL);
3895 }
3896 }
3897
3898 static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
3899 unsigned long state,
3900 void *_notify)
3901 {
3902 struct netlink_notify *notify = _notify;
3903
3904 if (state != NETLINK_URELEASE)
3905 return NOTIFY_DONE;
3906
3907 remove_user_radios(notify->portid);
3908
3909 if (notify->portid == hwsim_net_get_wmediumd(notify->net)) {
3910 printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
3911 " socket, switching to perfect channel medium\n");
3912 hwsim_register_wmediumd(notify->net, 0);
3913 }
3914 return NOTIFY_DONE;
3915
3916 }
3917
3918 static struct notifier_block hwsim_netlink_notifier = {
3919 .notifier_call = mac80211_hwsim_netlink_notify,
3920 };
3921
3922 static int __init hwsim_init_netlink(void)
3923 {
3924 int rc;
3925
3926 printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
3927
3928 rc = genl_register_family(&hwsim_genl_family);
3929 if (rc)
3930 goto failure;
3931
3932 rc = netlink_register_notifier(&hwsim_netlink_notifier);
3933 if (rc) {
3934 genl_unregister_family(&hwsim_genl_family);
3935 goto failure;
3936 }
3937
3938 return 0;
3939
3940 failure:
3941 pr_debug("mac80211_hwsim: error occurred in %s\n", __func__);
3942 return -EINVAL;
3943 }
3944
3945 static __net_init int hwsim_init_net(struct net *net)
3946 {
3947 return hwsim_net_set_netgroup(net);
3948 }
3949
3950 static void __net_exit hwsim_exit_net(struct net *net)
3951 {
3952 struct mac80211_hwsim_data *data, *tmp;
3953 LIST_HEAD(list);
3954
3955 spin_lock_bh(&hwsim_radio_lock);
3956 list_for_each_entry_safe(data, tmp, &hwsim_radios, list) {
3957 if (!net_eq(wiphy_net(data->hw->wiphy), net))
3958 continue;
3959
3960 /* Radios created in init_net are returned to init_net. */
3961 if (data->netgroup == hwsim_net_get_netgroup(&init_net))
3962 continue;
3963
3964 list_move(&data->list, &list);
3965 rhashtable_remove_fast(&hwsim_radios_rht, &data->rht,
3966 hwsim_rht_params);
3967 hwsim_radios_generation++;
3968 }
3969 spin_unlock_bh(&hwsim_radio_lock);
3970
3971 list_for_each_entry_safe(data, tmp, &list, list) {
3972 list_del(&data->list);
3973 mac80211_hwsim_del_radio(data,
3974 wiphy_name(data->hw->wiphy),
3975 NULL);
3976 }
3977
3978 ida_simple_remove(&hwsim_netgroup_ida, hwsim_net_get_netgroup(net));
3979 }
3980
3981 static struct pernet_operations hwsim_net_ops = {
3982 .init = hwsim_init_net,
3983 .exit = hwsim_exit_net,
3984 .id = &hwsim_net_id,
3985 .size = sizeof(struct hwsim_net),
3986 };
3987
3988 static void hwsim_exit_netlink(void)
3989 {
3990 /* unregister the notifier */
3991 netlink_unregister_notifier(&hwsim_netlink_notifier);
3992 /* unregister the family */
3993 genl_unregister_family(&hwsim_genl_family);
3994 }
3995
3996 #if IS_REACHABLE(CONFIG_VIRTIO)
3997 static void hwsim_virtio_tx_done(struct virtqueue *vq)
3998 {
3999 unsigned int len;
4000 struct sk_buff *skb;
4001 unsigned long flags;
4002
4003 spin_lock_irqsave(&hwsim_virtio_lock, flags);
4004 while ((skb = virtqueue_get_buf(vq, &len)))
4005 nlmsg_free(skb);
4006 spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
4007 }
4008
4009 static int hwsim_virtio_handle_cmd(struct sk_buff *skb)
4010 {
4011 struct nlmsghdr *nlh;
4012 struct genlmsghdr *gnlh;
4013 struct nlattr *tb[HWSIM_ATTR_MAX + 1];
4014 struct genl_info info = {};
4015 int err;
4016
4017 nlh = nlmsg_hdr(skb);
4018 gnlh = nlmsg_data(nlh);
4019 err = genlmsg_parse(nlh, &hwsim_genl_family, tb, HWSIM_ATTR_MAX,
4020 hwsim_genl_policy, NULL);
4021 if (err) {
4022 pr_err_ratelimited("hwsim: genlmsg_parse returned %d\n", err);
4023 return err;
4024 }
4025
4026 info.attrs = tb;
4027
4028 switch (gnlh->cmd) {
4029 case HWSIM_CMD_FRAME:
4030 hwsim_cloned_frame_received_nl(skb, &info);
4031 break;
4032 case HWSIM_CMD_TX_INFO_FRAME:
4033 hwsim_tx_info_frame_received_nl(skb, &info);
4034 break;
4035 default:
4036 pr_err_ratelimited("hwsim: invalid cmd: %d\n", gnlh->cmd);
4037 return -EPROTO;
4038 }
4039 return 0;
4040 }
4041
4042 static void hwsim_virtio_rx_work(struct work_struct *work)
4043 {
4044 struct virtqueue *vq;
4045 unsigned int len;
4046 struct sk_buff *skb;
4047 struct scatterlist sg[1];
4048 int err;
4049 unsigned long flags;
4050
4051 spin_lock_irqsave(&hwsim_virtio_lock, flags);
4052 if (!hwsim_virtio_enabled)
4053 goto out_unlock;
4054
4055 skb = virtqueue_get_buf(hwsim_vqs[HWSIM_VQ_RX], &len);
4056 if (!skb)
4057 goto out_unlock;
4058 spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
4059
4060 skb->data = skb->head;
4061 skb_set_tail_pointer(skb, len);
4062 hwsim_virtio_handle_cmd(skb);
4063
4064 spin_lock_irqsave(&hwsim_virtio_lock, flags);
4065 if (!hwsim_virtio_enabled) {
4066 nlmsg_free(skb);
4067 goto out_unlock;
4068 }
4069 vq = hwsim_vqs[HWSIM_VQ_RX];
4070 sg_init_one(sg, skb->head, skb_end_offset(skb));
4071 err = virtqueue_add_inbuf(vq, sg, 1, skb, GFP_KERNEL);
4072 if (WARN(err, "virtqueue_add_inbuf returned %d\n", err))
4073 nlmsg_free(skb);
4074 else
4075 virtqueue_kick(vq);
4076 schedule_work(&hwsim_virtio_rx);
4077
4078 out_unlock:
4079 spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
4080 }
4081
4082 static void hwsim_virtio_rx_done(struct virtqueue *vq)
4083 {
4084 schedule_work(&hwsim_virtio_rx);
4085 }
4086
4087 static int init_vqs(struct virtio_device *vdev)
4088 {
4089 vq_callback_t *callbacks[HWSIM_NUM_VQS] = {
4090 [HWSIM_VQ_TX] = hwsim_virtio_tx_done,
4091 [HWSIM_VQ_RX] = hwsim_virtio_rx_done,
4092 };
4093 const char *names[HWSIM_NUM_VQS] = {
4094 [HWSIM_VQ_TX] = "tx",
4095 [HWSIM_VQ_RX] = "rx",
4096 };
4097
4098 return virtio_find_vqs(vdev, HWSIM_NUM_VQS,
4099 hwsim_vqs, callbacks, names, NULL);
4100 }
4101
4102 static int fill_vq(struct virtqueue *vq)
4103 {
4104 int i, err;
4105 struct sk_buff *skb;
4106 struct scatterlist sg[1];
4107
4108 for (i = 0; i < virtqueue_get_vring_size(vq); i++) {
4109 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
4110 if (!skb)
4111 return -ENOMEM;
4112
4113 sg_init_one(sg, skb->head, skb_end_offset(skb));
4114 err = virtqueue_add_inbuf(vq, sg, 1, skb, GFP_KERNEL);
4115 if (err) {
4116 nlmsg_free(skb);
4117 return err;
4118 }
4119 }
4120 virtqueue_kick(vq);
4121 return 0;
4122 }
4123
4124 static void remove_vqs(struct virtio_device *vdev)
4125 {
4126 int i;
4127
4128 vdev->config->reset(vdev);
4129
4130 for (i = 0; i < ARRAY_SIZE(hwsim_vqs); i++) {
4131 struct virtqueue *vq = hwsim_vqs[i];
4132 struct sk_buff *skb;
4133
4134 while ((skb = virtqueue_detach_unused_buf(vq)))
4135 nlmsg_free(skb);
4136 }
4137
4138 vdev->config->del_vqs(vdev);
4139 }
4140
4141 static int hwsim_virtio_probe(struct virtio_device *vdev)
4142 {
4143 int err;
4144 unsigned long flags;
4145
4146 spin_lock_irqsave(&hwsim_virtio_lock, flags);
4147 if (hwsim_virtio_enabled) {
4148 spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
4149 return -EEXIST;
4150 }
4151 spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
4152
4153 err = init_vqs(vdev);
4154 if (err)
4155 return err;
4156
4157 err = fill_vq(hwsim_vqs[HWSIM_VQ_RX]);
4158 if (err)
4159 goto out_remove;
4160
4161 spin_lock_irqsave(&hwsim_virtio_lock, flags);
4162 hwsim_virtio_enabled = true;
4163 spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
4164
4165 schedule_work(&hwsim_virtio_rx);
4166 return 0;
4167
4168 out_remove:
4169 remove_vqs(vdev);
4170 return err;
4171 }
4172
4173 static void hwsim_virtio_remove(struct virtio_device *vdev)
4174 {
4175 hwsim_virtio_enabled = false;
4176
4177 cancel_work_sync(&hwsim_virtio_rx);
4178
4179 remove_vqs(vdev);
4180 }
4181
4182 /* MAC80211_HWSIM virtio device id table */
4183 static const struct virtio_device_id id_table[] = {
4184 { VIRTIO_ID_MAC80211_HWSIM, VIRTIO_DEV_ANY_ID },
4185 { 0 }
4186 };
4187 MODULE_DEVICE_TABLE(virtio, id_table);
4188
4189 static struct virtio_driver virtio_hwsim = {
4190 .driver.name = KBUILD_MODNAME,
4191 .driver.owner = THIS_MODULE,
4192 .id_table = id_table,
4193 .probe = hwsim_virtio_probe,
4194 .remove = hwsim_virtio_remove,
4195 };
4196
4197 static int hwsim_register_virtio_driver(void)
4198 {
4199 spin_lock_init(&hwsim_virtio_lock);
4200
4201 return register_virtio_driver(&virtio_hwsim);
4202 }
4203
4204 static void hwsim_unregister_virtio_driver(void)
4205 {
4206 unregister_virtio_driver(&virtio_hwsim);
4207 }
4208 #else
4209 static inline int hwsim_register_virtio_driver(void)
4210 {
4211 return 0;
4212 }
4213
4214 static inline void hwsim_unregister_virtio_driver(void)
4215 {
4216 }
4217 #endif
4218
4219 static int __init init_mac80211_hwsim(void)
4220 {
4221 int i, err;
4222
4223 if (radios < 0 || radios > 100)
4224 return -EINVAL;
4225
4226 if (channels < 1)
4227 return -EINVAL;
4228
4229 spin_lock_init(&hwsim_radio_lock);
4230
4231 err = rhashtable_init(&hwsim_radios_rht, &hwsim_rht_params);
4232 if (err)
4233 return err;
4234
4235 err = register_pernet_device(&hwsim_net_ops);
4236 if (err)
4237 goto out_free_rht;
4238
4239 err = platform_driver_register(&mac80211_hwsim_driver);
4240 if (err)
4241 goto out_unregister_pernet;
4242
4243 err = hwsim_init_netlink();
4244 if (err)
4245 goto out_unregister_driver;
4246
4247 err = hwsim_register_virtio_driver();
4248 if (err)
4249 goto out_exit_netlink;
4250
4251 hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
4252 if (IS_ERR(hwsim_class)) {
4253 err = PTR_ERR(hwsim_class);
4254 goto out_exit_virtio;
4255 }
4256
4257 for (i = 0; i < radios; i++) {
4258 struct hwsim_new_radio_params param = { 0 };
4259
4260 param.channels = channels;
4261
4262 switch (regtest) {
4263 case HWSIM_REGTEST_DIFF_COUNTRY:
4264 if (i < ARRAY_SIZE(hwsim_alpha2s))
4265 param.reg_alpha2 = hwsim_alpha2s[i];
4266 break;
4267 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
4268 if (!i)
4269 param.reg_alpha2 = hwsim_alpha2s[0];
4270 break;
4271 case HWSIM_REGTEST_STRICT_ALL:
4272 param.reg_strict = true;
4273 /* fall through */
4274 case HWSIM_REGTEST_DRIVER_REG_ALL:
4275 param.reg_alpha2 = hwsim_alpha2s[0];
4276 break;
4277 case HWSIM_REGTEST_WORLD_ROAM:
4278 if (i == 0)
4279 param.regd = &hwsim_world_regdom_custom_01;
4280 break;
4281 case HWSIM_REGTEST_CUSTOM_WORLD:
4282 param.regd = &hwsim_world_regdom_custom_01;
4283 break;
4284 case HWSIM_REGTEST_CUSTOM_WORLD_2:
4285 if (i == 0)
4286 param.regd = &hwsim_world_regdom_custom_01;
4287 else if (i == 1)
4288 param.regd = &hwsim_world_regdom_custom_02;
4289 break;
4290 case HWSIM_REGTEST_STRICT_FOLLOW:
4291 if (i == 0) {
4292 param.reg_strict = true;
4293 param.reg_alpha2 = hwsim_alpha2s[0];
4294 }
4295 break;
4296 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
4297 if (i == 0) {
4298 param.reg_strict = true;
4299 param.reg_alpha2 = hwsim_alpha2s[0];
4300 } else if (i == 1) {
4301 param.reg_alpha2 = hwsim_alpha2s[1];
4302 }
4303 break;
4304 case HWSIM_REGTEST_ALL:
4305 switch (i) {
4306 case 0:
4307 param.regd = &hwsim_world_regdom_custom_01;
4308 break;
4309 case 1:
4310 param.regd = &hwsim_world_regdom_custom_02;
4311 break;
4312 case 2:
4313 param.reg_alpha2 = hwsim_alpha2s[0];
4314 break;
4315 case 3:
4316 param.reg_alpha2 = hwsim_alpha2s[1];
4317 break;
4318 case 4:
4319 param.reg_strict = true;
4320 param.reg_alpha2 = hwsim_alpha2s[2];
4321 break;
4322 }
4323 break;
4324 default:
4325 break;
4326 }
4327
4328 param.p2p_device = support_p2p_device;
4329 param.use_chanctx = channels > 1;
4330 param.iftypes = HWSIM_IFTYPE_SUPPORT_MASK;
4331 if (param.p2p_device)
4332 param.iftypes |= BIT(NL80211_IFTYPE_P2P_DEVICE);
4333
4334 err = mac80211_hwsim_new_radio(NULL, &param);
4335 if (err < 0)
4336 goto out_free_radios;
4337 }
4338
4339 hwsim_mon = alloc_netdev(0, "hwsim%d", NET_NAME_UNKNOWN,
4340 hwsim_mon_setup);
4341 if (hwsim_mon == NULL) {
4342 err = -ENOMEM;
4343 goto out_free_radios;
4344 }
4345
4346 rtnl_lock();
4347 err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
4348 if (err < 0) {
4349 rtnl_unlock();
4350 goto out_free_mon;
4351 }
4352
4353 err = register_netdevice(hwsim_mon);
4354 if (err < 0) {
4355 rtnl_unlock();
4356 goto out_free_mon;
4357 }
4358 rtnl_unlock();
4359
4360 return 0;
4361
4362 out_free_mon:
4363 free_netdev(hwsim_mon);
4364 out_free_radios:
4365 mac80211_hwsim_free();
4366 out_exit_virtio:
4367 hwsim_unregister_virtio_driver();
4368 out_exit_netlink:
4369 hwsim_exit_netlink();
4370 out_unregister_driver:
4371 platform_driver_unregister(&mac80211_hwsim_driver);
4372 out_unregister_pernet:
4373 unregister_pernet_device(&hwsim_net_ops);
4374 out_free_rht:
4375 rhashtable_destroy(&hwsim_radios_rht);
4376 return err;
4377 }
4378 module_init(init_mac80211_hwsim);
4379
4380 static void __exit exit_mac80211_hwsim(void)
4381 {
4382 pr_debug("mac80211_hwsim: unregister radios\n");
4383
4384 hwsim_unregister_virtio_driver();
4385 hwsim_exit_netlink();
4386
4387 mac80211_hwsim_free();
4388
4389 rhashtable_destroy(&hwsim_radios_rht);
4390 unregister_netdev(hwsim_mon);
4391 platform_driver_unregister(&mac80211_hwsim_driver);
4392 unregister_pernet_device(&hwsim_net_ops);
4393 }
4394 module_exit(exit_mac80211_hwsim);
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